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-rw-r--r--media/libtheora/AUTHORS54
-rw-r--r--media/libtheora/CHANGES255
-rw-r--r--media/libtheora/COPYING28
-rw-r--r--media/libtheora/LICENSE18
-rw-r--r--media/libtheora/Makefile.in24
-rw-r--r--media/libtheora/README156
-rw-r--r--media/libtheora/README_MOZILLA5
-rw-r--r--media/libtheora/bug468275-r18219.patch22
-rw-r--r--media/libtheora/bug625773-r17780.patch23
-rw-r--r--media/libtheora/bug703135.patch43
-rw-r--r--media/libtheora/bug752139-r18031.patch53
-rw-r--r--media/libtheora/bug752668-r18268.patch28
-rw-r--r--media/libtheora/bug920992.patch103
-rw-r--r--media/libtheora/include/theora/codec.h591
-rw-r--r--media/libtheora/include/theora/theora.h784
-rw-r--r--media/libtheora/include/theora/theoradec.h326
-rw-r--r--media/libtheora/include/theora/theoraenc.h540
-rw-r--r--media/libtheora/lib/apiwrapper.c166
-rw-r--r--media/libtheora/lib/apiwrapper.h54
-rw-r--r--media/libtheora/lib/arm/arm2gnu.pl281
-rw-r--r--media/libtheora/lib/arm/armbits.h32
-rw-r--r--media/libtheora/lib/arm/armbits.s236
-rw-r--r--media/libtheora/lib/arm/armcpu.c116
-rw-r--r--media/libtheora/lib/arm/armcpu.h29
-rw-r--r--media/libtheora/lib/arm/armfrag.s662
-rw-r--r--media/libtheora/lib/arm/armidct.s1914
-rw-r--r--media/libtheora/lib/arm/armint.h126
-rw-r--r--media/libtheora/lib/arm/armloop.s682
-rw-r--r--media/libtheora/lib/arm/armopts.s39
-rw-r--r--media/libtheora/lib/arm/armstate.c219
-rw-r--r--media/libtheora/lib/bitpack.c114
-rw-r--r--media/libtheora/lib/bitpack.h76
-rw-r--r--media/libtheora/lib/config.h98
-rw-r--r--media/libtheora/lib/dct.h31
-rw-r--r--media/libtheora/lib/decapiwrapper.c193
-rw-r--r--media/libtheora/lib/decinfo.c250
-rw-r--r--media/libtheora/lib/decint.h186
-rw-r--r--media/libtheora/lib/decode.c2963
-rw-r--r--media/libtheora/lib/dequant.c182
-rw-r--r--media/libtheora/lib/dequant.h27
-rw-r--r--media/libtheora/lib/fragment.c82
-rw-r--r--media/libtheora/lib/huffdec.c521
-rw-r--r--media/libtheora/lib/huffdec.h32
-rw-r--r--media/libtheora/lib/huffman.h70
-rw-r--r--media/libtheora/lib/idct.c329
-rw-r--r--media/libtheora/lib/info.c131
-rw-r--r--media/libtheora/lib/internal.c212
-rw-r--r--media/libtheora/lib/internal.h116
-rw-r--r--media/libtheora/lib/mathops.h143
-rw-r--r--media/libtheora/lib/ocintrin.h128
-rw-r--r--media/libtheora/lib/quant.c127
-rw-r--r--media/libtheora/lib/quant.h33
-rw-r--r--media/libtheora/lib/state.c1260
-rw-r--r--media/libtheora/lib/state.h552
-rw-r--r--media/libtheora/lib/x86/mmxfrag.c368
-rw-r--r--media/libtheora/lib/x86/mmxidct.c562
-rw-r--r--media/libtheora/lib/x86/mmxloop.h318
-rw-r--r--media/libtheora/lib/x86/mmxstate.c226
-rw-r--r--media/libtheora/lib/x86/sse2idct.c460
-rw-r--r--media/libtheora/lib/x86/sse2trans.h242
-rw-r--r--media/libtheora/lib/x86/x86cpu.c182
-rw-r--r--media/libtheora/lib/x86/x86cpu.h36
-rw-r--r--media/libtheora/lib/x86/x86int.h122
-rw-r--r--media/libtheora/lib/x86/x86state.c95
-rw-r--r--media/libtheora/lib/x86_vc/mmxfrag.c416
-rw-r--r--media/libtheora/lib/x86_vc/mmxidct.c597
-rw-r--r--media/libtheora/lib/x86_vc/mmxloop.h219
-rw-r--r--media/libtheora/lib/x86_vc/mmxstate.c176
-rw-r--r--media/libtheora/lib/x86_vc/x86cpu.c192
-rw-r--r--media/libtheora/lib/x86_vc/x86cpu.h36
-rw-r--r--media/libtheora/lib/x86_vc/x86int.h49
-rw-r--r--media/libtheora/lib/x86_vc/x86state.c61
-rw-r--r--media/libtheora/moz.build117
-rw-r--r--media/libtheora/update.sh86
74 files changed, 20025 insertions, 0 deletions
diff --git a/media/libtheora/AUTHORS b/media/libtheora/AUTHORS
new file mode 100644
index 000000000..077d4e588
--- /dev/null
+++ b/media/libtheora/AUTHORS
@@ -0,0 +1,54 @@
+Monty <monty@xiph.org>
+ - Original VP3 port
+
+Ralph Giles
+Timothy B. Terriberry
+Monty
+ - Ongoing development
+
+Dan B. Miller
+ - Pre alpha3 development
+
+Rudolf Marek
+Wim Tayman
+Dan Lenski
+Nils Pipenbrinck
+Monty
+ - MMX optimized functions
+
+David Schleef
+ - C64x port
+
+Aaron Colwell
+Thomas Vander Stichele
+Jan Gerber
+Conrad Parker
+Cristian Adam
+Sebastian Pippin
+Simon Hosie
+ - Bug fixes, enhancements, build systems.
+
+Mauricio Piacentini
+ - Original win32 projects and example ports
+ - VP3->Theora transcoder
+
+Silvia Pfeiffer
+ - Figures for the spec
+
+Michael Smith
+Andre Pang
+calc
+Chris Cheney
+Brendan Cully
+Edward Hervey
+Adam Moss
+Colin Ward
+Jeremy C. Reed
+Arc Riley
+Rodolphe Ortalo
+ - Bug fixes
+
+Robin Watts
+ - ARM code optimisations
+
+and other Xiph.org contributors
diff --git a/media/libtheora/CHANGES b/media/libtheora/CHANGES
new file mode 100644
index 000000000..fb09793a3
--- /dev/null
+++ b/media/libtheora/CHANGES
@@ -0,0 +1,255 @@
+libteora 1.2.0alpha1 (2010 September 23)
+
+- New 'ptalarbvorm' encoder with better rate/distortion optimization
+- New th_encode_ctl option for copying configuration from an existing
+ setup header, useful for splicing streams.
+- Returns TH_DUPFRAME in more cases.
+- Add ARM optimizations
+- Add TI C64x+ DSP optimizations
+- Other performance improvements
+- Rename speedlevel 2 to 3 and provide a new speedlevel 2
+- Various minor bug fixes
+
+libtheora 1.1.2 (unreleased snapshot)
+
+ - Fix Huffman table decoding with OC_HUFF_SLUSH is set to 0
+ - Fix a frame size bug in player_example
+ - Add support for passing a buffer the size of the picture
+ region, rather than a full padded frame to th_encode_ycbcr_in()
+ as was possible with the legacy pre-1.0 API.
+ - 4:4:4 support in player_example using software yuv->rgb
+ - Better rgb->yuv conversion in png2theora
+ - Clean up warnings and local variables
+ - Build and documentation fixes
+
+libtheora 1.1.1 (2009 October 1)
+
+ - Fix problems with MSVC inline assembly
+ - Add the missing encoder_disabled.c to the distribution
+ - build updates: autogen.sh should work better after switching systems
+ and the MSVC project now defaults to the dynamic runtime library
+ - Namespace some variables to avoid conflicts on wince.
+
+libtheora 1.1.0 (2009 September 24)
+
+ - Fix various small issues with the example and telemetry code
+ - Fix handing a zero-byte packet as the first frame
+ - Documentation cleanup
+ - Two minor build fixes
+
+libtheora 1.1beta3 (2009 August 22)
+
+ - Rate control fixes to smooth quality
+ - MSVC build now exports all of the 1.0 api
+ - Assorted small bug fixes
+
+libtheora 1.1beta2 (2009 August 12)
+
+ - Fix a rate control problem with difficult input
+ - Build fixes for OpenBSD and Apple Xcode
+ - Examples now all use the 1.0 api
+ - TH_ENCCTL_SET_SPLEVEL works again
+ - Various bug fixes and source tree rearrangement
+
+libtheora 1.1beta1 (2009 August 5)
+
+ - Support for two-pass encoding
+ - Performance optimization of both encoder and decoder
+ - Encoder supports dynamic adjustment of quality and
+ bitrate targets
+ - Encoder is generally more configurable, and all
+ rate control modes perform better
+ - Encoder now accepts 4:2:2 and 4:4:4 chroma sampling
+ - Decoder telemetry output shows quantization choice
+ and a breakdown of bitrate usage in the frame
+ - MSVC assembly optimizations up to date and functional
+
+libtheora 1.1alpha2 (2009 May 26)
+
+ - Reduce lambda for small quantizers.
+ - New encoder fDCT does better on smooth gradients
+ - Use SATD for mode decisions (1-2% bitrate reduction)
+ - Assembly rewrite for new features and general speed up
+ - Share code between the encoder and decoder for performance
+ - Fix 4:2:2 decoding and telemetry
+ - MSVC project files updated, but assembly is disabled.
+ - New configure option --disable-spec to work around toolchain
+ detection failures.
+ - Limit symbol exports on MacOS X.
+ - Port remaining unit tests from the 1.0 release.
+
+libtheora 1.1alpha1 (2009 March 27)
+
+ - Encoder rewrite with much improved vbr quality/bitrate and
+ better tracking of the target rate in cbr mode.
+ - MSVC project files do not work in this release.
+
+libtheora 1.0 (2008 November 3)
+
+ - Merge x86 assembly for forward DCT from Thusnelda branch.
+ - Update 32 bit MMX with loop filter fix.
+ - Check for an uninitialized state before dereferencing in propagating
+ decode calls.
+ - Remove all TH_DEBUG statements.
+ - Rename the bitpacker source files copied from libogg to avoid
+ confusing simple build systems using both libraries.
+ - Declare bitfield entries to be explicitly signed for Solaris cc.
+ - Set quantization parameters to default values when an empty buffer is
+ passed with TH_ENCCTL_SET_QUANT_PARAMS.
+ - Split encoder and decoder tests depending on configure settings.
+ - Return lstylex.sty to the distribution.
+ - Disable inline assembly on gcc versions prior to 3.1.
+ - Remove extern references for OC_*_QUANT_MIN.
+ - Make various data tables static const so they can be read-only.
+ - Remove ENCCTL codes from the old encoder API.
+ - Implement TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE ctl.
+ - Fix segfault when exactly one of the width or height is not a multiple
+ of 16, but the other is.
+ - Compute the correct vertical offset for chroma.
+ - cpuid assembly fix for MSVC.
+ - Add VS2008 project files.
+ - Build updates for 64-bit platforms, Mingw32, VS and XCode.
+ - Do not clobber the cropping rectangle.
+ - Declare ourselves 1.0final to pkg-config to sort after beta releases.
+ - Fix the scons build to include asm in libtheoradec/enc.
+
+libtheora 1.0beta3 (2008 April 16)
+
+ - Build new libtheoradec and libtheoraenc libraries
+ supporting the new API from theora-exp. This API should
+ not be considered stable yet.
+ - Change granule_frame() to return an index as documented.
+ This is a change of behaviour from 1.0beta1.
+ - Document that granule_time() returns the end of the
+ presentation interval.
+ - Use a custom copy of the libogg bitpacker in the decoder
+ to avoid function call overhead.
+ - MMX code improved and ported to MSVC.
+ - Fix a problem with the MMX code on SELinux.
+ - Fix a problem with decoder quantizer initialization.
+ - Fix a page queue problem with png2theora.
+ - Improved robustness.
+ - Updated VS2005 project files.
+ - Dropped build support for Microsoft VS2003.
+ - Dropped build support for the unreleased libogg2.
+ - Added the specification to the autotools build.
+ - Specification corrections.
+
+libtheora 1.0beta2 (2007 October 12)
+
+ - Fix a crash bug on char-is-unsigned architectures (PowerPC)
+ - Fix a buffer sizing issue that caused rare encoder crashes
+ - Fix a buffer alignment issue
+ - Build fixes for MingW32, MSVC
+ - Improved format documentation.
+
+libtheora 1.0beta1 (2007 September 22)
+
+ - Granulepos scheme modified to match other codecs. This bumps
+ the bitstream revision to 3.2.1. Bitstreams marked 3.2.0 are
+ handled correctly by this decoder. Older decoders will show
+ a one frame sync error in the less noticeable direction.
+
+libtheora 1.0alpha8 (2007 September 18)
+
+ - Switch to new spec compliant decoder from theora-exp branch.
+ Written by Dr. Timothy Terriberry.
+ - Add support to the encoder for using quantization settings
+ provided by the application.
+ - more assembly optimizations
+
+libtheora 1.0alpha7 (2006 June 20)
+
+ - Enable mmx assembly by default
+ - Avoid some relocations that caused problems on SELinux
+ - Other build fixes
+ - time testing mode (-f) for the dump_video example
+
+libtheora 1.0alpha6 (2006 May 30)
+
+ * Merge theora-mmx simd acceleration (x86_32 and x86_64)
+ * Major RTP payload specification update
+ * Minor format specification updates
+ * Fix some spurious calls to free() instead of _ogg_free()
+ * Fix invalid array indexing in PixelLineSearch()
+ * Improve robustness against invalid input
+ * General warning cleanup
+ * The offset_y member now means what every application thought it meant
+ (offset from the top). This will mean some old files (those with a
+ non-centered image created with a buggy encoder) will display differently.
+
+libtheora 1.0alpha5 (2005 August 20)
+
+ * Fixed bitrate management bugs that caused popping and encode
+ errors
+ * Fixed a crash problem with the theora_state internals not
+ being intialized properly.
+ * new utility function:
+ - theora_granule_shift()
+ * dump_video example now makes YUV4MPEG files by default, so
+ the results can be fed back to encoder_example and similar
+ tools. The old behavior is restored through the '-r' switch.
+ * ./configure now prints a summary
+ * simple unit test of the comment api under 'make check'
+ * misc code cleanup, warning and leak fixes
+
+libtheora 1.0alpha4 (2004 December 15)
+
+ * first draft of the Theora I Format Specification
+ * API documentation generated from theora.h with Doxygen
+ * fix a double-update bug in the motion analysis
+ * apply the loop filter before filling motion vector border
+ in the reference frame
+ * new utility functions:
+ - theora_packet_isheader(),
+ - theora_packet_iskeyframe()
+ - theora_granule_frame()
+ * optional support for building without floating point
+ * optional support for building without encode support
+ * various build and packaging fixes
+ * pkg-config support
+ * SymbianOS build support
+
+libtheora 1.0alpha3 (2004 March 20)
+
+ UPDATE: on 2004 July 1 the Theora I bitstream format was frozen. Files
+ produced by the libtheora 1.0alpha3 reference encoder will always be
+ decodable by the Theora I spec.
+
+ * Bitstream info header FORMAT CHANGES:
+ - move the granulepos shift field to maintain byte alignment longer.
+ - reserve 5 additional bits for subsampling and interlace flags.
+ * Bitstream setup header FORMAT CHANGES:
+ - support for a range of interpolated quant matricies.
+ - include the in-loop block filter coeff.
+ * Bitsteam data packet FORMAT CHANGES:
+ - Reserve a bit for per-block Q index selection.
+ - Flip the coded image orientation for compatibility with VP3.
+ This allows lossless transcoding of VP3 content, but files
+ encoded with earlier theora releases would play upside down.
+ * example VP3 lossless transcoder
+ * optional support for libogg2
+ * timing improvements in the example player
+ * packaging and build system updates and fixes
+
+libtheora 1.0alpha2 (2003 June 9)
+
+ * bitstream FORMAT CHANGES:
+ - store the quant tables in a third setup header for
+ future encoder flexibility
+ - store the huffman tables in the third setup header
+ - add a field for marking the colorspace to the info header
+ - add crop parameters for non-multiple-of-16 frame sizes
+ - add a second vorbiscomment-style metadata header
+ * API changes to handle multiple headers with a single
+ theora_decode_header() call, like libvorbis
+ * code cleanup and minor fixes
+ * new dump_video code example/utility
+ * experimental win32 code examples
+
+libtheora 1.0alpha1 (2002 September 25)
+
+ * First release of the theora reference implementation
+ * Port of the newly opened VP3 code to the Ogg container
+ * Rewrite of the code for portability and to use the libogg bitpacker
+
diff --git a/media/libtheora/COPYING b/media/libtheora/COPYING
new file mode 100644
index 000000000..c8ccce4ff
--- /dev/null
+++ b/media/libtheora/COPYING
@@ -0,0 +1,28 @@
+Copyright (C) 2002-2009 Xiph.org Foundation
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/media/libtheora/LICENSE b/media/libtheora/LICENSE
new file mode 100644
index 000000000..5e5ec0846
--- /dev/null
+++ b/media/libtheora/LICENSE
@@ -0,0 +1,18 @@
+Please see the file COPYING for the copyright license for this software.
+
+In addition to and irrespective of the copyright license associated
+with this software, On2 Technologies, Inc. makes the following statement
+regarding technology used in this software:
+
+ On2 represents and warrants that it shall not assert any rights
+ relating to infringement of On2's registered patents, nor initiate
+ any litigation asserting such rights, against any person who, or
+ entity which utilizes the On2 VP3 Codec Software, including any
+ use, distribution, and sale of said Software; which make changes,
+ modifications, and improvements in said Software; and to use,
+ distribute, and sell said changes as well as applications for other
+ fields of use.
+
+This reference implementation is originally derived from the On2 VP3
+Codec Software, and the Theora video format is essentially compatible
+with the VP3 video format, consisting of a backward-compatible superset.
diff --git a/media/libtheora/Makefile.in b/media/libtheora/Makefile.in
new file mode 100644
index 000000000..d3d611e56
--- /dev/null
+++ b/media/libtheora/Makefile.in
@@ -0,0 +1,24 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+ifdef GNU_AS
+ifeq ($(CPU_ARCH),arm)
+
+armfrag-gnu.s: armopts-gnu.S
+armidct-gnu.s: armopts-gnu.S
+armloop-gnu.s: armopts-gnu.S
+
+# armopts needs a specific rule, because arm2gnu.pl will always add the .S
+# suffix when translating the files that include it.
+armopts-gnu.S: lib/arm/armopts.s
+ $(PERL) $(srcdir)/lib/arm/arm2gnu.pl < $< > $@
+# For all others, we can use an implicit rule
+%-gnu.s: lib/arm/%.s
+ $(PERL) $(srcdir)/lib/arm/arm2gnu.pl < $< > $@
+
+endif
+endif
+
+include $(topsrcdir)/config/rules.mk
diff --git a/media/libtheora/README b/media/libtheora/README
new file mode 100644
index 000000000..7663f9ff8
--- /dev/null
+++ b/media/libtheora/README
@@ -0,0 +1,156 @@
+-------------------------------------------------------------------------
+ The Xiph.org Foundation's libtheora 1.2
+-------------------------------------------------------------------------
+
+*** What is Theora?
+
+Theora is Xiph.Org's first publicly released video codec, intended
+for use within the Foundation's Ogg multimedia streaming system.
+Theora is derived directly from On2's VP3 codec, adds new features
+while allow it a longer useful lifetime as an competitive codec.
+
+The 1.0 release decoder supported all the new features, but the
+encoder is nearly identical to the VP3 code.
+
+The 1.1 release featured a completely rewritten encoder, offering
+better performance and compression, and making more complete use
+of the format's feature set.
+
+The 1.2 release features significant additional improvements in
+compression and performance. Files produced by newer encoders can
+be decoded by earlier releases.
+
+*** Where is Theora?
+
+Theora's main site is www.theora.org. Theora and related libraries
+can be gotten from www.theora.org or the main Xiph.Org site at
+www.xiph.org. Development source is kept in an open subversion
+repository, see http://theora.org/svn/ for instructions.
+
+-------------------------------------------------------------------------
+Getting started with the code
+-------------------------------------------------------------------------
+
+*** What do I need to build the source?
+
+Requirements summary:
+
+ For libtheora:
+
+ libogg 1.1 or newer.
+
+ For example encoder:
+
+ as above,
+
+ libvorbis and libvorbisenc 1.0.1 or newer.
+ (libvorbis 1.3.1 or newer for 5.1 audio)
+
+ For creating a source distribution package:
+
+ as above,
+
+ Doxygen to build the API documentation,
+ pdflatex and fig2dev to build the format specification
+ (transfig package in Ubuntu).
+
+ For the player only:
+
+ as above,
+
+ SDL (Simple Direct media Layer) libraries and headers,
+ OSS audio driver and development headers.
+
+The provided build system is the GNU automake/autoconf system, and
+the main library, libtheora, should already build smoothly on any
+system. Failure of libtheora to build on a GNU-enabled system is
+considered a bug; please report problems to theora-dev@xiph.org.
+
+Windows build support is included in the win32 directory.
+
+Project files for Apple XCode are included in the macosx directory.
+
+There is also a more limited scons build.
+
+*** How do I use the sample encoder?
+
+The sample encoder takes raw video in YUV4MPEG2 format, as used by
+lavtools, mjpeg-tools and other packages. The encoder expects audio,
+if any, in a separate wave WAV file. Try 'encoder_example -h' for a
+complete list of options.
+
+An easy way to get raw video and audio files is to use MPlayer as an
+export utility. The options " -ao pcm -vo yuv4mpeg " will export a
+wav file named audiodump.wav and a YUV video file in the correct
+format for encoder_example as stream.yuv. Be careful when exporting
+video alone; MPlayer may drop frames to 'keep up' with the audio
+timer. The example encoder can't properly synchronize input audio and
+video file that aren't in sync to begin with.
+
+The encoder will also take video or audio on stdin if '-' is specified
+as the input file name.
+
+There is also a 'png2theora' example which accepts a set of image
+files in that format.
+
+*** How do I use the sample player?
+
+The sample player takes an Ogg file on standard in; the file may be
+audio alone, video alone or video with audio.
+
+*** What other tools are available?
+
+The programs in the examples directory are intended as tutorial source
+for developers using the library. As such they sacrifice features and
+robustness in the interests of comprehension and should not be
+considered serious applications.
+
+If you're wanting to just use theora, consider the programs linked
+from http://www.theora.org/. There is playback support in a number
+of common free players, and plugins for major media frameworks.
+Jan Gerber's ffmpeg2theora is an excellent encoding front end.
+
+-------------------------------------------------------------------------
+Troubleshooting the build process
+-------------------------------------------------------------------------
+
+*** Compile error, such as:
+
+encoder_internal.h:664: parse error before `ogg_uint16_t'
+
+This means you have version of libogg prior to 1.1. A *complete* new Ogg
+install, libs and headers is needed.
+
+Also be sure that there aren't multiple copies of Ogg installed in
+/usr and /usr/local; an older one might be first on the search path
+for libs and headers.
+
+*** Link error, such as:
+
+undefined reference to `oggpackB_stream'
+
+See above; you need libogg 1.1 or later.
+
+*** Link error, such as:
+
+undefined reference to `vorbis_granule_time'
+
+You need libvorbis and libvorbisenc from the 1.0.1 release or later.
+
+*** Link error, such as:
+
+/usr/lib/libSDL.a(SDL_esdaudio.lo): In function `ESD_OpenAudio':
+SDL_esdaudio.lo(.text+0x25d): undefined reference to `esd_play_stream'
+
+Be sure to use an SDL that's built to work with OSS. If you use an
+SDL that is also built with ESD and/or ALSA support, it will try to
+suck in all those extra libraries at link time too. That will only
+work if the extra libraries are also installed.
+
+*** Link warning, such as:
+
+libtool: link: warning: library `/usr/lib/libogg.la' was moved.
+libtool: link: warning: library `/usr/lib/libogg.la' was moved.
+
+Re-run theora/autogen.sh after an Ogg or Vorbis rebuild/reinstall
+
diff --git a/media/libtheora/README_MOZILLA b/media/libtheora/README_MOZILLA
new file mode 100644
index 000000000..d48dbfa6f
--- /dev/null
+++ b/media/libtheora/README_MOZILLA
@@ -0,0 +1,5 @@
+The source from this directory was copied from the theora subversion trunk
+using the update.sh script. The changes made were those applied by update.sh,
+the addition/update of Makefile.in files for the Mozilla build system.
+
+The subversion revision used was r17578.
diff --git a/media/libtheora/bug468275-r18219.patch b/media/libtheora/bug468275-r18219.patch
new file mode 100644
index 000000000..7b64b4195
--- /dev/null
+++ b/media/libtheora/bug468275-r18219.patch
@@ -0,0 +1,22 @@
+diff --git a/media/libtheora/lib/state.c b/media/libtheora/lib/state.c
+--- a/media/libtheora/lib/state.c
++++ b/media/libtheora/lib/state.c
+@@ -583,17 +583,17 @@ static int oc_state_ref_bufs_init(oc_the
+ ref_frame_sz<yplane_sz||ref_frame_data_sz/_nrefs!=ref_frame_sz){
+ return TH_EIMPL;
+ }
+ ref_frame_data=oc_aligned_malloc(ref_frame_data_sz,16);
+ frag_buf_offs=_state->frag_buf_offs=
+ _ogg_malloc(_state->nfrags*sizeof(*frag_buf_offs));
+ if(ref_frame_data==NULL||frag_buf_offs==NULL){
+ _ogg_free(frag_buf_offs);
+- _ogg_free(ref_frame_data);
++ oc_aligned_free(ref_frame_data);
+ return TH_EFAULT;
+ }
+ /*Set up the width, height and stride for the image buffers.*/
+ _state->ref_frame_bufs[0][0].width=info->frame_width;
+ _state->ref_frame_bufs[0][0].height=info->frame_height;
+ _state->ref_frame_bufs[0][0].stride=yhstride;
+ _state->ref_frame_bufs[0][1].width=_state->ref_frame_bufs[0][2].width=
+ info->frame_width>>hdec;
diff --git a/media/libtheora/bug625773-r17780.patch b/media/libtheora/bug625773-r17780.patch
new file mode 100644
index 000000000..af112560b
--- /dev/null
+++ b/media/libtheora/bug625773-r17780.patch
@@ -0,0 +1,23 @@
+diff --git a/media/libtheora/lib/decode.c b/media/libtheora/lib/decode.c
+--- a/media/libtheora/lib/decode.c
++++ b/media/libtheora/lib/decode.c
+@@ -2072,18 +2072,17 @@ static void oc_dec_init_dummy_frame(th_d
+ sizeof(_dec->pp_frame_buf[0])*3);
+ info=&_dec->state.info;
+ yhstride=abs(_dec->state.ref_ystride[0]);
+ yheight=info->frame_height+2*OC_UMV_PADDING;
+ chstride=abs(_dec->state.ref_ystride[1]);
+ cheight=yheight>>!(info->pixel_fmt&2);
+ yplane_sz=yhstride*(size_t)yheight+16;
+ cplane_sz=chstride*(size_t)cheight;
+- yoffset=_dec->state.ref_ystride[0]*(yheight-1)-
+- (OC_UMV_PADDING+OC_UMV_PADDING*(ptrdiff_t)yhstride);
++ yoffset=yhstride*(ptrdiff_t)(yheight-OC_UMV_PADDING-1)+OC_UMV_PADDING;
+ memset(_dec->state.ref_frame_data[0]-yoffset,0x80,yplane_sz+2*cplane_sz);
+ }
+
+ int th_decode_packetin(th_dec_ctx *_dec,const ogg_packet *_op,
+ ogg_int64_t *_granpos){
+ int ret;
+ if(_dec==NULL||_op==NULL)return TH_EFAULT;
+ /*A completely empty packet indicates a dropped frame and is treated exactly
diff --git a/media/libtheora/bug703135.patch b/media/libtheora/bug703135.patch
new file mode 100644
index 000000000..99ba2b5ce
--- /dev/null
+++ b/media/libtheora/bug703135.patch
@@ -0,0 +1,43 @@
+diff --git a/media/libtheora/lib/huffdec.c b/media/libtheora/lib/huffdec.c
+--- a/media/libtheora/lib/huffdec.c
++++ b/media/libtheora/lib/huffdec.c
+@@ -320,16 +320,19 @@ static size_t oc_huff_node_size(int _nbi
+ /*Produces a collapsed-tree representation of the given token list.
+ _tree: The storage for the collapsed Huffman tree.
+ This may be NULL to compute the required storage size instead of
+ constructing the tree.
+ _tokens: A list of internal tokens, in the order they are found in the
+ codebook, and the lengths of their corresponding codewords.
+ _ntokens: The number of tokens corresponding to this tree node.
+ Return: The number of words required to store the tree.*/
++#if defined(_MSC_VER) && _MSC_VER >= 1700
++#pragma optimize( "", off )
++#endif
+ static size_t oc_huff_tree_collapse(ogg_int16_t *_tree,
+ unsigned char _tokens[][2],int _ntokens){
+ ogg_int16_t node[34];
+ unsigned char depth[34];
+ unsigned char last[34];
+ size_t ntree;
+ int ti;
+ int l;
+@@ -367,16 +370,19 @@ static size_t oc_huff_tree_collapse(ogg_
+ /*Pop back up a level of recursion.*/
+ else if(l-->0)nbits=depth[l+1]-depth[l];
+ }
+ while(l>=0);
+ }
+ while(l>=0);
+ return ntree;
+ }
++#if defined(_MSC_VER) && _MSC_VER >= 1700
++#pragma optimize( "", on )
++#endif
+
+ /*Unpacks a set of Huffman trees, and reduces them to a collapsed
+ representation.
+ _opb: The buffer to unpack the trees from.
+ _nodes: The table to fill with the Huffman trees.
+ Return: 0 on success, or a negative value on error.
+ The caller is responsible for cleaning up any partially initialized
+ _nodes on failure.*/
diff --git a/media/libtheora/bug752139-r18031.patch b/media/libtheora/bug752139-r18031.patch
new file mode 100644
index 000000000..62ea87632
--- /dev/null
+++ b/media/libtheora/bug752139-r18031.patch
@@ -0,0 +1,53 @@
+diff --git a/media/libtheora/lib/arm/arm2gnu.pl b/media/libtheora/lib/arm/arm2gnu.pl
+--- a/media/libtheora/lib/arm/arm2gnu.pl
++++ b/media/libtheora/lib/arm/arm2gnu.pl
+@@ -1,11 +1,14 @@
+ #!/usr/bin/perl
+
+ my $bigend; # little/big endian
++my $nxstack;
++
++$nxstack = 0;
+
+ eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
+ if $running_under_some_shell;
+
+ while ($ARGV[0] =~ /^-/) {
+ $_ = shift;
+ last if /^--/;
+ if (/^-n/) {
+@@ -77,16 +80,19 @@ while (<>) {
+ if ( /\bMEND\b/ ) {
+ s/\bMEND\b/.endm/;
+ $n=0;
+ }
+
+ # ".rdata" doesn't work in 'as' version 2.13.2, as it is ".rodata" there.
+ #
+ if ( /\bAREA\b/ ) {
++ if ( /CODE/ ) {
++ $nxstack = 1;
++ }
+ s/^(.+)CODE(.+)READONLY(.*)/ .text/;
+ s/^(.+)DATA(.+)READONLY(.*)/ .section .rdata\n .align 2/;
+ s/^(.+)\|\|\.data\|\|(.+)/ .data\n .align 2/;
+ s/^(.+)\|\|\.bss\|\|(.+)/ .bss/;
+ }
+
+ s/\|\|\.constdata\$(\d+)\|\|/.L_CONST$1/; # ||.constdata$3||
+ s/\|\|\.bss\$(\d+)\|\|/.L_BSS$1/; # ||.bss$2||
+@@ -263,9 +269,13 @@ while (<>) {
+ } continue {
+ printf ("%s", $_) if $printit;
+ if ($addPadding != 0)
+ {
+ printf (" mov r0,r0\n");
+ $addPadding = 0;
+ }
+ }
+-
++#If we had a code section, mark that this object doesn't need an executable
++# stack.
++if ($nxstack) {
++ printf (" .section\t.note.GNU-stack,\"\",\%\%progbits\n");
++}
diff --git a/media/libtheora/bug752668-r18268.patch b/media/libtheora/bug752668-r18268.patch
new file mode 100644
index 000000000..6931e07fa
--- /dev/null
+++ b/media/libtheora/bug752668-r18268.patch
@@ -0,0 +1,28 @@
+diff -r 1092c1a3ac50 media/libtheora/lib/decode.c
+--- a/media/libtheora/lib/decode.c Tue May 08 08:53:50 2012 +0200
++++ b/media/libtheora/lib/decode.c Tue May 08 01:00:59 2012 -0700
+@@ -395,20 +395,20 @@ static int oc_dec_init(oc_dec_ctx *_dec,
+ _dec->state.dequant_table_data[qi][pli][qti];
+ }
+ oc_dequant_tables_init(_dec->state.dequant_tables,_dec->pp_dc_scale,
+ &_setup->qinfo);
+ for(qi=0;qi<64;qi++){
+ int qsum;
+ qsum=0;
+ for(qti=0;qti<2;qti++)for(pli=0;pli<3;pli++){
+- qsum+=_dec->state.dequant_tables[qti][pli][qi][12]+
+- _dec->state.dequant_tables[qti][pli][qi][17]+
+- _dec->state.dequant_tables[qti][pli][qi][18]+
+- _dec->state.dequant_tables[qti][pli][qi][24]<<(pli==0);
++ qsum+=_dec->state.dequant_tables[qi][pli][qti][12]+
++ _dec->state.dequant_tables[qi][pli][qti][17]+
++ _dec->state.dequant_tables[qi][pli][qti][18]+
++ _dec->state.dequant_tables[qi][pli][qti][24]<<(pli==0);
+ }
+ _dec->pp_sharp_mod[qi]=-(qsum>>11);
+ }
+ memcpy(_dec->state.loop_filter_limits,_setup->qinfo.loop_filter_limits,
+ sizeof(_dec->state.loop_filter_limits));
+ oc_dec_accel_init(_dec);
+ _dec->pp_level=OC_PP_LEVEL_DISABLED;
+ _dec->dc_qis=NULL;
diff --git a/media/libtheora/bug920992.patch b/media/libtheora/bug920992.patch
new file mode 100644
index 000000000..eada85a49
--- /dev/null
+++ b/media/libtheora/bug920992.patch
@@ -0,0 +1,103 @@
+diff --git a/media/libtheora/lib/arm/armbits.s b/media/libtheora/lib/arm/armbits.s
+--- a/media/libtheora/lib/arm/armbits.s
++++ b/media/libtheora/lib/arm/armbits.s
+@@ -12,16 +12,22 @@
+ ;
+ ; function:
+ ; last mod: $Id: armbits.s 17481 2010-10-03 22:49:42Z tterribe $
+ ;
+ ;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
++ ; Explicitly specifying alignment here because some versions of
++ ; gas don't align code correctly. See
++ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
++ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
++ ALIGN
++
+ EXPORT oc_pack_read_arm
+ EXPORT oc_pack_read1_arm
+ EXPORT oc_huff_token_decode_arm
+
+ oc_pack_read1_arm PROC
+ ; r0 = oc_pack_buf *_b
+ ADD r12,r0,#8
+ LDMIA r12,{r2,r3} ; r2 = window
+diff --git a/media/libtheora/lib/arm/armfrag.s b/media/libtheora/lib/arm/armfrag.s
+--- a/media/libtheora/lib/arm/armfrag.s
++++ b/media/libtheora/lib/arm/armfrag.s
+@@ -11,16 +11,22 @@
+ ;********************************************************************
+ ; Original implementation:
+ ; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+ ; last mod: $Id: armfrag.s 17481 2010-10-03 22:49:42Z tterribe $
+ ;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
++ ; Explicitly specifying alignment here because some versions of
++ ; gas don't align code correctly. See
++ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
++ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
++ ALIGN
++
+ GET armopts.s
+
+ ; Vanilla ARM v4 versions
+ EXPORT oc_frag_copy_list_arm
+ EXPORT oc_frag_recon_intra_arm
+ EXPORT oc_frag_recon_inter_arm
+ EXPORT oc_frag_recon_inter2_arm
+
+diff --git a/media/libtheora/lib/arm/armidct.s b/media/libtheora/lib/arm/armidct.s
+--- a/media/libtheora/lib/arm/armidct.s
++++ b/media/libtheora/lib/arm/armidct.s
+@@ -11,16 +11,22 @@
+ ;********************************************************************
+ ; Original implementation:
+ ; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+ ; last mod: $Id: armidct.s 17481 2010-10-03 22:49:42Z tterribe $
+ ;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
++ ; Explicitly specifying alignment here because some versions of
++ ; gas don't align code correctly. See
++ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
++ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
++ ALIGN
++
+ GET armopts.s
+
+ EXPORT oc_idct8x8_1_arm
+ EXPORT oc_idct8x8_arm
+
+ oc_idct8x8_1_arm PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_uint16_t _dc
+diff --git a/media/libtheora/lib/arm/armloop.s b/media/libtheora/lib/arm/armloop.s
+--- a/media/libtheora/lib/arm/armloop.s
++++ b/media/libtheora/lib/arm/armloop.s
+@@ -11,16 +11,22 @@
+ ;********************************************************************
+ ; Original implementation:
+ ; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+ ; last mod: $Id: armloop.s 17481 2010-10-03 22:49:42Z tterribe $
+ ;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
++ ; Explicitly specifying alignment here because some versions of
++ ; gas don't align code correctly. See
++ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
++ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
++ ALIGN
++
+ GET armopts.s
+
+ EXPORT oc_loop_filter_frag_rows_arm
+
+ ; Which bit this is depends on the order of packing within a bitfield.
+ ; Hopefully that doesn't change among any of the relevant compilers.
+ OC_FRAG_CODED_FLAG * 1
diff --git a/media/libtheora/include/theora/codec.h b/media/libtheora/include/theora/codec.h
new file mode 100644
index 000000000..5c2669630
--- /dev/null
+++ b/media/libtheora/include/theora/codec.h
@@ -0,0 +1,591 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: theora.h,v 1.8 2004/03/15 22:17:32 derf Exp $
+
+ ********************************************************************/
+
+/**\mainpage
+ *
+ * \section intro Introduction
+ *
+ * This is the documentation for <tt>libtheora</tt> C API.
+ * The current reference
+ * implementation for <a href="http://www.theora.org/">Theora</a>, a free,
+ * patent-unencumbered video codec.
+ * Theora is derived from On2's VP3 codec with additional features and
+ * integration with Ogg multimedia formats by
+ * <a href="http://www.xiph.org/">the Xiph.Org Foundation</a>.
+ * Complete documentation of the format itself is available in
+ * <a href="http://www.theora.org/doc/Theora.pdf">the Theora
+ * specification</a>.
+ *
+ * \subsection Organization
+ *
+ * The functions documented here are actually subdivided into three
+ * separate libraries:
+ * - <tt>libtheoraenc</tt> contains the encoder interface,
+ * described in \ref encfuncs.
+ * - <tt>libtheoradec</tt> contains the decoder interface and
+ * routines shared with the encoder.
+ * You must also link to this if you link to <tt>libtheoraenc</tt>.
+ * The routines in this library are described in \ref decfuncs and
+ * \ref basefuncs.
+ * - <tt>libtheora</tt> contains the \ref oldfuncs.
+ *
+ * New code should link to <tt>libtheoradec</tt> and, if using encoder
+ * features, <tt>libtheoraenc</tt>. Together these two export both
+ * the standard and the legacy API, so this is all that is needed by
+ * any code. The older <tt>libtheora</tt> library is provided just for
+ * compatibility with older build configurations.
+ *
+ * In general the recommended 1.x API symbols can be distinguished
+ * by their <tt>th_</tt> or <tt>TH_</tt> namespace prefix.
+ * The older, legacy API uses <tt>theora_</tt> or <tt>OC_</tt>
+ * prefixes instead.
+ */
+
+/**\file
+ * The shared <tt>libtheoradec</tt> and <tt>libtheoraenc</tt> C API.
+ * You don't need to include this directly.*/
+
+#if !defined(_O_THEORA_CODEC_H_)
+# define _O_THEORA_CODEC_H_ (1)
+# include <ogg/ogg.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+
+/**\name Return codes*/
+/*@{*/
+/**An invalid pointer was provided.*/
+#define TH_EFAULT (-1)
+/**An invalid argument was provided.*/
+#define TH_EINVAL (-10)
+/**The contents of the header were incomplete, invalid, or unexpected.*/
+#define TH_EBADHEADER (-20)
+/**The header does not belong to a Theora stream.*/
+#define TH_ENOTFORMAT (-21)
+/**The bitstream version is too high.*/
+#define TH_EVERSION (-22)
+/**The specified function is not implemented.*/
+#define TH_EIMPL (-23)
+/**There were errors in the video data packet.*/
+#define TH_EBADPACKET (-24)
+/**The decoded packet represented a dropped frame.
+ The player can continue to display the current frame, as the contents of the
+ decoded frame buffer have not changed.*/
+#define TH_DUPFRAME (1)
+/*@}*/
+
+/**The currently defined color space tags.
+ * See <a href="http://www.theora.org/doc/Theora.pdf">the Theora
+ * specification</a>, Chapter 4, for exact details on the meaning
+ * of each of these color spaces.*/
+typedef enum{
+ /**The color space was not specified at the encoder.
+ It may be conveyed by an external means.*/
+ TH_CS_UNSPECIFIED,
+ /**A color space designed for NTSC content.*/
+ TH_CS_ITU_REC_470M,
+ /**A color space designed for PAL/SECAM content.*/
+ TH_CS_ITU_REC_470BG,
+ /**The total number of currently defined color spaces.*/
+ TH_CS_NSPACES
+}th_colorspace;
+
+/**The currently defined pixel format tags.
+ * See <a href="http://www.theora.org/doc/Theora.pdf">the Theora
+ * specification</a>, Section 4.4, for details on the precise sample
+ * locations.*/
+typedef enum{
+ /**Chroma decimation by 2 in both the X and Y directions (4:2:0).
+ The Cb and Cr chroma planes are half the width and half the
+ height of the luma plane.*/
+ TH_PF_420,
+ /**Currently reserved.*/
+ TH_PF_RSVD,
+ /**Chroma decimation by 2 in the X direction (4:2:2).
+ The Cb and Cr chroma planes are half the width of the luma plane, but full
+ height.*/
+ TH_PF_422,
+ /**No chroma decimation (4:4:4).
+ The Cb and Cr chroma planes are full width and full height.*/
+ TH_PF_444,
+ /**The total number of currently defined pixel formats.*/
+ TH_PF_NFORMATS
+}th_pixel_fmt;
+
+
+
+/**A buffer for a single color plane in an uncompressed image.
+ * This contains the image data in a left-to-right, top-down format.
+ * Each row of pixels is stored contiguously in memory, but successive
+ * rows need not be.
+ * Use \a stride to compute the offset of the next row.
+ * The encoder accepts both positive \a stride values (top-down in memory)
+ * and negative (bottom-up in memory).
+ * The decoder currently always generates images with positive strides.*/
+typedef struct{
+ /**The width of this plane.*/
+ int width;
+ /**The height of this plane.*/
+ int height;
+ /**The offset in bytes between successive rows.*/
+ int stride;
+ /**A pointer to the beginning of the first row.*/
+ unsigned char *data;
+}th_img_plane;
+
+/**A complete image buffer for an uncompressed frame.
+ * The chroma planes may be decimated by a factor of two in either
+ * direction, as indicated by th_info#pixel_fmt.
+ * The width and height of the Y' plane must be multiples of 16.
+ * They may need to be cropped for display, using the rectangle
+ * specified by th_info#pic_x, th_info#pic_y, th_info#pic_width,
+ * and th_info#pic_height.
+ * All samples are 8 bits.
+ * \note The term YUV often used to describe a colorspace is ambiguous.
+ * The exact parameters of the RGB to YUV conversion process aside, in
+ * many contexts the U and V channels actually have opposite meanings.
+ * To avoid this confusion, we are explicit: the name of the color
+ * channels are Y'CbCr, and they appear in that order, always.
+ * The prime symbol denotes that the Y channel is non-linear.
+ * Cb and Cr stand for "Chroma blue" and "Chroma red", respectively.*/
+typedef th_img_plane th_ycbcr_buffer[3];
+
+/**Theora bitstream information.
+ * This contains the basic playback parameters for a stream, and corresponds to
+ * the initial 'info' header packet.
+ * To initialize an encoder, the application fills in this structure and
+ * passes it to th_encode_alloc().
+ * A default encoding mode is chosen based on the values of the #quality and
+ * #target_bitrate fields.
+ * On decode, it is filled in by th_decode_headerin(), and then passed to
+ * th_decode_alloc().
+ *
+ * Encoded Theora frames must be a multiple of 16 in size;
+ * this is what the #frame_width and #frame_height members represent.
+ * To handle arbitrary picture sizes, a crop rectangle is specified in the
+ * #pic_x, #pic_y, #pic_width and #pic_height members.
+ *
+ * All frame buffers contain pointers to the full, padded frame.
+ * However, the current encoder <em>will not</em> reference pixels outside of
+ * the cropped picture region, and the application does not need to fill them
+ * in.
+ * The decoder <em>will</em> allocate storage for a full frame, but the
+ * application <em>should not</em> rely on the padding containing sensible
+ * data.
+ *
+ * It is also generally recommended that the offsets and sizes should still be
+ * multiples of 2 to avoid chroma sampling shifts when chroma is sub-sampled.
+ * See <a href="http://www.theora.org/doc/Theora.pdf">the Theora
+ * specification</a>, Section 4.4, for more details.
+ *
+ * Frame rate, in frames per second, is stored as a rational fraction, as is
+ * the pixel aspect ratio.
+ * Note that this refers to the aspect ratio of the individual pixels, not of
+ * the overall frame itself.
+ * The frame aspect ratio can be computed from pixel aspect ratio using the
+ * image dimensions.*/
+typedef struct{
+ /**\name Theora version
+ * Bitstream version information.*/
+ /*@{*/
+ unsigned char version_major;
+ unsigned char version_minor;
+ unsigned char version_subminor;
+ /*@}*/
+ /**The encoded frame width.
+ * This must be a multiple of 16, and less than 1048576.*/
+ ogg_uint32_t frame_width;
+ /**The encoded frame height.
+ * This must be a multiple of 16, and less than 1048576.*/
+ ogg_uint32_t frame_height;
+ /**The displayed picture width.
+ * This must be no larger than width.*/
+ ogg_uint32_t pic_width;
+ /**The displayed picture height.
+ * This must be no larger than height.*/
+ ogg_uint32_t pic_height;
+ /**The X offset of the displayed picture.
+ * This must be no larger than #frame_width-#pic_width or 255, whichever is
+ * smaller.*/
+ ogg_uint32_t pic_x;
+ /**The Y offset of the displayed picture.
+ * This must be no larger than #frame_height-#pic_height, and
+ * #frame_height-#pic_height-#pic_y must be no larger than 255.
+ * This slightly funny restriction is due to the fact that the offset is
+ * specified from the top of the image for consistency with the standard
+ * graphics left-handed coordinate system used throughout this API, while
+ * it is stored in the encoded stream as an offset from the bottom.*/
+ ogg_uint32_t pic_y;
+ /**\name Frame rate
+ * The frame rate, as a fraction.
+ * If either is 0, the frame rate is undefined.*/
+ /*@{*/
+ ogg_uint32_t fps_numerator;
+ ogg_uint32_t fps_denominator;
+ /*@}*/
+ /**\name Aspect ratio
+ * The aspect ratio of the pixels.
+ * If either value is zero, the aspect ratio is undefined.
+ * If not specified by any external means, 1:1 should be assumed.
+ * The aspect ratio of the full picture can be computed as
+ * \code
+ * aspect_numerator*pic_width/(aspect_denominator*pic_height).
+ * \endcode */
+ /*@{*/
+ ogg_uint32_t aspect_numerator;
+ ogg_uint32_t aspect_denominator;
+ /*@}*/
+ /**The color space.*/
+ th_colorspace colorspace;
+ /**The pixel format.*/
+ th_pixel_fmt pixel_fmt;
+ /**The target bit-rate in bits per second.
+ If initializing an encoder with this struct, set this field to a non-zero
+ value to activate CBR encoding by default.*/
+ int target_bitrate;
+ /**The target quality level.
+ Valid values range from 0 to 63, inclusive, with higher values giving
+ higher quality.
+ If initializing an encoder with this struct, and #target_bitrate is set
+ to zero, VBR encoding at this quality will be activated by default.*/
+ /*Currently this is set so that a qi of 0 corresponds to distortions of 24
+ times the JND, and each increase by 16 halves that value.
+ This gives us fine discrimination at low qualities, yet effective rate
+ control at high qualities.
+ The qi value 63 is special, however.
+ For this, the highest quality, we use one half of a JND for our threshold.
+ Due to the lower bounds placed on allowable quantizers in Theora, we will
+ not actually be able to achieve quality this good, but this should
+ provide as close to visually lossless quality as Theora is capable of.
+ We could lift the quantizer restrictions without breaking VP3.1
+ compatibility, but this would result in quantized coefficients that are
+ too large for the current bitstream to be able to store.
+ We'd have to redesign the token syntax to store these large coefficients,
+ which would make transcoding complex.*/
+ int quality;
+ /**The amount to shift to extract the last keyframe number from the granule
+ * position.
+ * This can be at most 31.
+ * th_info_init() will set this to a default value (currently <tt>6</tt>,
+ * which is good for streaming applications), but you can set it to 0 to
+ * make every frame a keyframe.
+ * The maximum distance between key frames is
+ * <tt>1<<#keyframe_granule_shift</tt>.
+ * The keyframe frequency can be more finely controlled with
+ * #TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE, which can also be adjusted
+ * during encoding (for example, to force the next frame to be a keyframe),
+ * but it cannot be set larger than the amount permitted by this field after
+ * the headers have been output.*/
+ int keyframe_granule_shift;
+}th_info;
+
+/**The comment information.
+ *
+ * This structure holds the in-stream metadata corresponding to
+ * the 'comment' header packet.
+ * The comment header is meant to be used much like someone jotting a quick
+ * note on the label of a video.
+ * It should be a short, to the point text note that can be more than a couple
+ * words, but not more than a short paragraph.
+ *
+ * The metadata is stored as a series of (tag, value) pairs, in
+ * length-encoded string vectors.
+ * The first occurrence of the '=' character delimits the tag and value.
+ * A particular tag may occur more than once, and order is significant.
+ * The character set encoding for the strings is always UTF-8, but the tag
+ * names are limited to ASCII, and treated as case-insensitive.
+ * See <a href="http://www.theora.org/doc/Theora.pdf">the Theora
+ * specification</a>, Section 6.3.3 for details.
+ *
+ * In filling in this structure, th_decode_headerin() will null-terminate
+ * the user_comment strings for safety.
+ * However, the bitstream format itself treats them as 8-bit clean vectors,
+ * possibly containing null characters, and so the length array should be
+ * treated as their authoritative length.
+ */
+typedef struct th_comment{
+ /**The array of comment string vectors.*/
+ char **user_comments;
+ /**An array of the corresponding length of each vector, in bytes.*/
+ int *comment_lengths;
+ /**The total number of comment strings.*/
+ int comments;
+ /**The null-terminated vendor string.
+ This identifies the software used to encode the stream.*/
+ char *vendor;
+}th_comment;
+
+
+
+/**A single base matrix.*/
+typedef unsigned char th_quant_base[64];
+
+/**A set of \a qi ranges.*/
+typedef struct{
+ /**The number of ranges in the set.*/
+ int nranges;
+ /**The size of each of the #nranges ranges.
+ These must sum to 63.*/
+ const int *sizes;
+ /**#nranges <tt>+1</tt> base matrices.
+ Matrices \a i and <tt>i+1</tt> form the endpoints of range \a i.*/
+ const th_quant_base *base_matrices;
+}th_quant_ranges;
+
+/**A complete set of quantization parameters.
+ The quantizer for each coefficient is calculated as:
+ \code
+ Q=MAX(MIN(qmin[qti][ci!=0],scale[ci!=0][qi]*base[qti][pli][qi][ci]/100),
+ 1024).
+ \endcode
+
+ \a qti is the quantization type index: 0 for intra, 1 for inter.
+ <tt>ci!=0</tt> is 0 for the DC coefficient and 1 for AC coefficients.
+ \a qi is the quality index, ranging between 0 (low quality) and 63 (high
+ quality).
+ \a pli is the color plane index: 0 for Y', 1 for Cb, 2 for Cr.
+ \a ci is the DCT coefficient index.
+ Coefficient indices correspond to the normal 2D DCT block
+ ordering--row-major with low frequencies first--\em not zig-zag order.
+
+ Minimum quantizers are constant, and are given by:
+ \code
+ qmin[2][2]={{4,2},{8,4}}.
+ \endcode
+
+ Parameters that can be stored in the bitstream are as follows:
+ - The two scale matrices ac_scale and dc_scale.
+ \code
+ scale[2][64]={dc_scale,ac_scale}.
+ \endcode
+ - The base matrices for each \a qi, \a qti and \a pli (up to 384 in all).
+ In order to avoid storing a full 384 base matrices, only a sparse set of
+ matrices are stored, and the rest are linearly interpolated.
+ This is done as follows.
+ For each \a qti and \a pli, a series of \a n \a qi ranges is defined.
+ The size of each \a qi range can vary arbitrarily, but they must sum to
+ 63.
+ Then, <tt>n+1</tt> matrices are specified, one for each endpoint of the
+ ranges.
+ For interpolation purposes, each range's endpoints are the first \a qi
+ value it contains and one past the last \a qi value it contains.
+ Fractional values are rounded to the nearest integer, with ties rounded
+ away from zero.
+
+ Base matrices are stored by reference, so if the same matrices are used
+ multiple times, they will only appear once in the bitstream.
+ The bitstream is also capable of omitting an entire set of ranges and
+ its associated matrices if they are the same as either the previous
+ set (indexed in row-major order) or if the inter set is the same as the
+ intra set.
+
+ - Loop filter limit values.
+ The same limits are used for the loop filter in all color planes, despite
+ potentially differing levels of quantization in each.
+
+ For the current encoder, <tt>scale[ci!=0][qi]</tt> must be no greater
+ than <tt>scale[ci!=0][qi-1]</tt> and <tt>base[qti][pli][qi][ci]</tt> must
+ be no greater than <tt>base[qti][pli][qi-1][ci]</tt>.
+ These two conditions ensure that the actual quantizer for a given \a qti,
+ \a pli, and \a ci does not increase as \a qi increases.
+ This is not required by the decoder.*/
+typedef struct{
+ /**The DC scaling factors.*/
+ ogg_uint16_t dc_scale[64];
+ /**The AC scaling factors.*/
+ ogg_uint16_t ac_scale[64];
+ /**The loop filter limit values.*/
+ unsigned char loop_filter_limits[64];
+ /**The \a qi ranges for each \a ci and \a pli.*/
+ th_quant_ranges qi_ranges[2][3];
+}th_quant_info;
+
+
+
+/**The number of Huffman tables used by Theora.*/
+#define TH_NHUFFMAN_TABLES (80)
+/**The number of DCT token values in each table.*/
+#define TH_NDCT_TOKENS (32)
+
+/**A Huffman code for a Theora DCT token.
+ * Each set of Huffman codes in a given table must form a complete, prefix-free
+ * code.
+ * There is no requirement that all the tokens in a table have a valid code,
+ * but the current encoder is not optimized to take advantage of this.
+ * If each of the five grouops of 16 tables does not contain at least one table
+ * with a code for every token, then the encoder may fail to encode certain
+ * frames.
+ * The complete table in the first group of 16 does not have to be in the same
+ * place as the complete table in the other groups, but the complete tables in
+ * the remaining four groups must all be in the same place.*/
+typedef struct{
+ /**The bit pattern for the code, with the LSbit of the pattern aligned in
+ * the LSbit of the word.*/
+ ogg_uint32_t pattern;
+ /**The number of bits in the code.
+ * This must be between 0 and 32, inclusive.*/
+ int nbits;
+}th_huff_code;
+
+
+
+/**\defgroup basefuncs Functions Shared by Encode and Decode*/
+/*@{*/
+/**\name Basic shared functions*/
+/*@{*/
+/**Retrieves a human-readable string to identify the library vendor and
+ * version.
+ * \return the version string.*/
+extern const char *th_version_string(void);
+/**Retrieves the library version number.
+ * This is the highest bitstream version that the encoder library will produce,
+ * or that the decoder library can decode.
+ * This number is composed of a 16-bit major version, 8-bit minor version
+ * and 8 bit sub-version, composed as follows:
+ * \code
+ * (VERSION_MAJOR<<16)+(VERSION_MINOR<<8)+(VERSION_SUBMINOR)
+ * \endcode
+ * \return the version number.*/
+extern ogg_uint32_t th_version_number(void);
+/**Converts a granule position to an absolute frame index, starting at
+ * <tt>0</tt>.
+ * The granule position is interpreted in the context of a given
+ * #th_enc_ctx or #th_dec_ctx handle (either will suffice).
+ * \param _encdec A previously allocated #th_enc_ctx or #th_dec_ctx
+ * handle.
+ * \param _granpos The granule position to convert.
+ * \returns The absolute frame index corresponding to \a _granpos.
+ * \retval -1 The given granule position was invalid (i.e. negative).*/
+extern ogg_int64_t th_granule_frame(void *_encdec,ogg_int64_t _granpos);
+/**Converts a granule position to an absolute time in seconds.
+ * The granule position is interpreted in the context of a given
+ * #th_enc_ctx or #th_dec_ctx handle (either will suffice).
+ * \param _encdec A previously allocated #th_enc_ctx or #th_dec_ctx
+ * handle.
+ * \param _granpos The granule position to convert.
+ * \return The absolute time in seconds corresponding to \a _granpos.
+ * This is the "end time" for the frame, or the latest time it should
+ * be displayed.
+ * It is not the presentation time.
+ * \retval -1 The given granule position was invalid (i.e. negative).*/
+extern double th_granule_time(void *_encdec,ogg_int64_t _granpos);
+/**Determines whether a Theora packet is a header or not.
+ * This function does no verification beyond checking the packet type bit, so
+ * it should not be used for bitstream identification; use
+ * th_decode_headerin() for that.
+ * As per the Theora specification, an empty (0-byte) packet is treated as a
+ * data packet (a delta frame with no coded blocks).
+ * \param _op An <tt>ogg_packet</tt> containing encoded Theora data.
+ * \retval 1 The packet is a header packet
+ * \retval 0 The packet is a video data packet.*/
+extern int th_packet_isheader(ogg_packet *_op);
+/**Determines whether a theora packet is a key frame or not.
+ * This function does no verification beyond checking the packet type and
+ * key frame bits, so it should not be used for bitstream identification; use
+ * th_decode_headerin() for that.
+ * As per the Theora specification, an empty (0-byte) packet is treated as a
+ * delta frame (with no coded blocks).
+ * \param _op An <tt>ogg_packet</tt> containing encoded Theora data.
+ * \retval 1 The packet contains a key frame.
+ * \retval 0 The packet contains a delta frame.
+ * \retval -1 The packet is not a video data packet.*/
+extern int th_packet_iskeyframe(ogg_packet *_op);
+/*@}*/
+
+
+/**\name Functions for manipulating header data*/
+/*@{*/
+/**Initializes a th_info structure.
+ * This should be called on a freshly allocated #th_info structure before
+ * attempting to use it.
+ * \param _info The #th_info struct to initialize.*/
+extern void th_info_init(th_info *_info);
+/**Clears a #th_info structure.
+ * This should be called on a #th_info structure after it is no longer
+ * needed.
+ * \param _info The #th_info struct to clear.*/
+extern void th_info_clear(th_info *_info);
+
+/**Initialize a #th_comment structure.
+ * This should be called on a freshly allocated #th_comment structure
+ * before attempting to use it.
+ * \param _tc The #th_comment struct to initialize.*/
+extern void th_comment_init(th_comment *_tc);
+/**Add a comment to an initialized #th_comment structure.
+ * \note Neither th_comment_add() nor th_comment_add_tag() support
+ * comments containing null values, although the bitstream format does
+ * support them.
+ * To add such comments you will need to manipulate the #th_comment
+ * structure directly.
+ * \param _tc The #th_comment struct to add the comment to.
+ * \param _comment Must be a null-terminated UTF-8 string containing the
+ * comment in "TAG=the value" form.*/
+extern void th_comment_add(th_comment *_tc, char *_comment);
+/**Add a comment to an initialized #th_comment structure.
+ * \note Neither th_comment_add() nor th_comment_add_tag() support
+ * comments containing null values, although the bitstream format does
+ * support them.
+ * To add such comments you will need to manipulate the #th_comment
+ * structure directly.
+ * \param _tc The #th_comment struct to add the comment to.
+ * \param _tag A null-terminated string containing the tag associated with
+ * the comment.
+ * \param _val The corresponding value as a null-terminated string.*/
+extern void th_comment_add_tag(th_comment *_tc,char *_tag,char *_val);
+/**Look up a comment value by its tag.
+ * \param _tc An initialized #th_comment structure.
+ * \param _tag The tag to look up.
+ * \param _count The instance of the tag.
+ * The same tag can appear multiple times, each with a distinct
+ * value, so an index is required to retrieve them all.
+ * The order in which these values appear is significant and
+ * should be preserved.
+ * Use th_comment_query_count() to get the legal range for
+ * the \a _count parameter.
+ * \return A pointer to the queried tag's value.
+ * This points directly to data in the #th_comment structure.
+ * It should not be modified or freed by the application, and
+ * modifications to the structure may invalidate the pointer.
+ * \retval NULL If no matching tag is found.*/
+extern char *th_comment_query(th_comment *_tc,char *_tag,int _count);
+/**Look up the number of instances of a tag.
+ * Call this first when querying for a specific tag and then iterate over the
+ * number of instances with separate calls to th_comment_query() to
+ * retrieve all the values for that tag in order.
+ * \param _tc An initialized #th_comment structure.
+ * \param _tag The tag to look up.
+ * \return The number on instances of this particular tag.*/
+extern int th_comment_query_count(th_comment *_tc,char *_tag);
+/**Clears a #th_comment structure.
+ * This should be called on a #th_comment structure after it is no longer
+ * needed.
+ * It will free all memory used by the structure members.
+ * \param _tc The #th_comment struct to clear.*/
+extern void th_comment_clear(th_comment *_tc);
+/*@}*/
+/*@}*/
+
+
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/media/libtheora/include/theora/theora.h b/media/libtheora/include/theora/theora.h
new file mode 100644
index 000000000..575a889b7
--- /dev/null
+++ b/media/libtheora/include/theora/theora.h
@@ -0,0 +1,784 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: theora.h,v 1.17 2003/12/06 18:06:19 arc Exp $
+
+ ********************************************************************/
+
+#ifndef _O_THEORA_H_
+#define _O_THEORA_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#include <stddef.h> /* for size_t */
+
+#include <ogg/ogg.h>
+
+/** \file
+ * The libtheora pre-1.0 legacy C API.
+ *
+ * \ingroup oldfuncs
+ *
+ * \section intro Introduction
+ *
+ * This is the documentation for the libtheora legacy C API, declared in
+ * the theora.h header, which describes the old interface used before
+ * the 1.0 release. This API was widely deployed for several years and
+ * remains supported, but for new code we recommend the cleaner API
+ * declared in theoradec.h and theoraenc.h.
+ *
+ * libtheora is the reference implementation for
+ * <a href="http://www.theora.org/">Theora</a>, a free video codec.
+ * Theora is derived from On2's VP3 codec with improved integration with
+ * Ogg multimedia formats by <a href="http://www.xiph.org/">Xiph.Org</a>.
+ *
+ * \section overview Overview
+ *
+ * This library will both decode and encode theora packets to/from raw YUV
+ * frames. In either case, the packets will most likely either come from or
+ * need to be embedded in an Ogg stream. Use
+ * <a href="http://xiph.org/ogg/">libogg</a> or
+ * <a href="http://www.annodex.net/software/liboggz/index.html">liboggz</a>
+ * to extract/package these packets.
+ *
+ * \section decoding Decoding Process
+ *
+ * Decoding can be separated into the following steps:
+ * -# initialise theora_info and theora_comment structures using
+ * theora_info_init() and theora_comment_init():
+ \verbatim
+ theora_info info;
+ theora_comment comment;
+
+ theora_info_init(&info);
+ theora_comment_init(&comment);
+ \endverbatim
+ * -# retrieve header packets from Ogg stream (there should be 3) and decode
+ * into theora_info and theora_comment structures using
+ * theora_decode_header(). See \ref identification for more information on
+ * identifying which packets are theora packets.
+ \verbatim
+ int i;
+ for (i = 0; i < 3; i++)
+ {
+ (get a theora packet "op" from the Ogg stream)
+ theora_decode_header(&info, &comment, op);
+ }
+ \endverbatim
+ * -# initialise the decoder based on the information retrieved into the
+ * theora_info struct by theora_decode_header(). You will need a
+ * theora_state struct.
+ \verbatim
+ theora_state state;
+
+ theora_decode_init(&state, &info);
+ \endverbatim
+ * -# pass in packets and retrieve decoded frames! See the yuv_buffer
+ * documentation for information on how to retrieve raw YUV data.
+ \verbatim
+ yuf_buffer buffer;
+ while (last packet was not e_o_s) {
+ (get a theora packet "op" from the Ogg stream)
+ theora_decode_packetin(&state, op);
+ theora_decode_YUVout(&state, &buffer);
+ }
+ \endverbatim
+ *
+ *
+ * \subsection identification Identifying Theora Packets
+ *
+ * All streams inside an Ogg file have a unique serial_no attached to the
+ * stream. Typically, you will want to
+ * - retrieve the serial_no for each b_o_s (beginning of stream) page
+ * encountered within the Ogg file;
+ * - test the first (only) packet on that page to determine if it is a theora
+ * packet;
+ * - once you have found a theora b_o_s page then use the retrieved serial_no
+ * to identify future packets belonging to the same theora stream.
+ *
+ * Note that you \e cannot use theora_packet_isheader() to determine if a
+ * packet is a theora packet or not, as this function does not perform any
+ * checking beyond whether a header bit is present. Instead, use the
+ * theora_decode_header() function and check the return value; or examine the
+ * header bytes at the beginning of the Ogg page.
+ */
+
+
+/** \defgroup oldfuncs Legacy pre-1.0 C API */
+/* @{ */
+
+/**
+ * A YUV buffer for passing uncompressed frames to and from the codec.
+ * This holds a Y'CbCr frame in planar format. The CbCr planes can be
+ * subsampled and have their own separate dimensions and row stride
+ * offsets. Note that the strides may be negative in some
+ * configurations. For theora the width and height of the largest plane
+ * must be a multiple of 16. The actual meaningful picture size and
+ * offset are stored in the theora_info structure; frames returned by
+ * the decoder may need to be cropped for display.
+ *
+ * All samples are 8 bits. Within each plane samples are ordered by
+ * row from the top of the frame to the bottom. Within each row samples
+ * are ordered from left to right.
+ *
+ * During decode, the yuv_buffer struct is allocated by the user, but all
+ * fields (including luma and chroma pointers) are filled by the library.
+ * These pointers address library-internal memory and their contents should
+ * not be modified.
+ *
+ * Conversely, during encode the user allocates the struct and fills out all
+ * fields. The user also manages the data addressed by the luma and chroma
+ * pointers. See the encoder_example.c and dump_video.c example files in
+ * theora/examples/ for more information.
+ */
+typedef struct {
+ int y_width; /**< Width of the Y' luminance plane */
+ int y_height; /**< Height of the luminance plane */
+ int y_stride; /**< Offset in bytes between successive rows */
+
+ int uv_width; /**< Width of the Cb and Cr chroma planes */
+ int uv_height; /**< Height of the chroma planes */
+ int uv_stride; /**< Offset between successive chroma rows */
+ unsigned char *y; /**< Pointer to start of luminance data */
+ unsigned char *u; /**< Pointer to start of Cb data */
+ unsigned char *v; /**< Pointer to start of Cr data */
+
+} yuv_buffer;
+
+/**
+ * A Colorspace.
+ */
+typedef enum {
+ OC_CS_UNSPECIFIED, /**< The colorspace is unknown or unspecified */
+ OC_CS_ITU_REC_470M, /**< This is the best option for 'NTSC' content */
+ OC_CS_ITU_REC_470BG, /**< This is the best option for 'PAL' content */
+ OC_CS_NSPACES /**< This marks the end of the defined colorspaces */
+} theora_colorspace;
+
+/**
+ * A Chroma subsampling
+ *
+ * These enumerate the available chroma subsampling options supported
+ * by the theora format. See Section 4.4 of the specification for
+ * exact definitions.
+ */
+typedef enum {
+ OC_PF_420, /**< Chroma subsampling by 2 in each direction (4:2:0) */
+ OC_PF_RSVD, /**< Reserved value */
+ OC_PF_422, /**< Horizonatal chroma subsampling by 2 (4:2:2) */
+ OC_PF_444 /**< No chroma subsampling at all (4:4:4) */
+} theora_pixelformat;
+
+/**
+ * Theora bitstream info.
+ * Contains the basic playback parameters for a stream,
+ * corresponding to the initial 'info' header packet.
+ *
+ * Encoded theora frames must be a multiple of 16 in width and height.
+ * To handle other frame sizes, a crop rectangle is specified in
+ * frame_height and frame_width, offset_x and * offset_y. The offset
+ * and size should still be a multiple of 2 to avoid chroma sampling
+ * shifts. Offset values in this structure are measured from the
+ * upper left of the image.
+ *
+ * Frame rate, in frames per second, is stored as a rational
+ * fraction. Aspect ratio is also stored as a rational fraction, and
+ * refers to the aspect ratio of the frame pixels, not of the
+ * overall frame itself.
+ *
+ * See <a href="http://svn.xiph.org/trunk/theora/examples/encoder_example.c">
+ * examples/encoder_example.c</a> for usage examples of the
+ * other paramters and good default settings for the encoder parameters.
+ */
+typedef struct {
+ ogg_uint32_t width; /**< encoded frame width */
+ ogg_uint32_t height; /**< encoded frame height */
+ ogg_uint32_t frame_width; /**< display frame width */
+ ogg_uint32_t frame_height; /**< display frame height */
+ ogg_uint32_t offset_x; /**< horizontal offset of the displayed frame */
+ ogg_uint32_t offset_y; /**< vertical offset of the displayed frame */
+ ogg_uint32_t fps_numerator; /**< frame rate numerator **/
+ ogg_uint32_t fps_denominator; /**< frame rate denominator **/
+ ogg_uint32_t aspect_numerator; /**< pixel aspect ratio numerator */
+ ogg_uint32_t aspect_denominator; /**< pixel aspect ratio denominator */
+ theora_colorspace colorspace; /**< colorspace */
+ int target_bitrate; /**< nominal bitrate in bits per second */
+ int quality; /**< Nominal quality setting, 0-63 */
+ int quick_p; /**< Quick encode/decode */
+
+ /* decode only */
+ unsigned char version_major;
+ unsigned char version_minor;
+ unsigned char version_subminor;
+
+ void *codec_setup;
+
+ /* encode only */
+ int dropframes_p;
+ int keyframe_auto_p;
+ ogg_uint32_t keyframe_frequency;
+ ogg_uint32_t keyframe_frequency_force; /* also used for decode init to
+ get granpos shift correct */
+ ogg_uint32_t keyframe_data_target_bitrate;
+ ogg_int32_t keyframe_auto_threshold;
+ ogg_uint32_t keyframe_mindistance;
+ ogg_int32_t noise_sensitivity;
+ ogg_int32_t sharpness;
+
+ theora_pixelformat pixelformat; /**< chroma subsampling mode to expect */
+
+} theora_info;
+
+/** Codec internal state and context.
+ */
+typedef struct{
+ theora_info *i;
+ ogg_int64_t granulepos;
+
+ void *internal_encode;
+ void *internal_decode;
+
+} theora_state;
+
+/**
+ * Comment header metadata.
+ *
+ * This structure holds the in-stream metadata corresponding to
+ * the 'comment' header packet.
+ *
+ * Meta data is stored as a series of (tag, value) pairs, in
+ * length-encoded string vectors. The first occurence of the
+ * '=' character delimits the tag and value. A particular tag
+ * may occur more than once. The character set encoding for
+ * the strings is always UTF-8, but the tag names are limited
+ * to case-insensitive ASCII. See the spec for details.
+ *
+ * In filling in this structure, theora_decode_header() will
+ * null-terminate the user_comment strings for safety. However,
+ * the bitstream format itself treats them as 8-bit clean,
+ * and so the length array should be treated as authoritative
+ * for their length.
+ */
+typedef struct theora_comment{
+ char **user_comments; /**< An array of comment string vectors */
+ int *comment_lengths; /**< An array of corresponding string vector lengths in bytes */
+ int comments; /**< The total number of comment string vectors */
+ char *vendor; /**< The vendor string identifying the encoder, null terminated */
+
+} theora_comment;
+
+
+/**\name theora_control() codes */
+/* \anchor decctlcodes_old
+ * These are the available request codes for theora_control()
+ * when called with a decoder instance.
+ * By convention decoder control codes are odd, to distinguish
+ * them from \ref encctlcodes_old "encoder control codes" which
+ * are even.
+ *
+ * Note that since the 1.0 release, both the legacy and the final
+ * implementation accept all the same control codes, but only the
+ * final API declares the newer codes.
+ *
+ * Keep any experimental or vendor-specific values above \c 0x8000.*/
+
+/*@{*/
+
+/**Get the maximum post-processing level.
+ * The decoder supports a post-processing filter that can improve
+ * the appearance of the decoded images. This returns the highest
+ * level setting for this post-processor, corresponding to maximum
+ * improvement and computational expense.
+ */
+#define TH_DECCTL_GET_PPLEVEL_MAX (1)
+
+/**Set the post-processing level.
+ * Sets the level of post-processing to use when decoding the
+ * compressed stream. This must be a value between zero (off)
+ * and the maximum returned by TH_DECCTL_GET_PPLEVEL_MAX.
+ */
+#define TH_DECCTL_SET_PPLEVEL (3)
+
+/**Sets the maximum distance between key frames.
+ * This can be changed during an encode, but will be bounded by
+ * <tt>1<<th_info#keyframe_granule_shift</tt>.
+ * If it is set before encoding begins, th_info#keyframe_granule_shift will
+ * be enlarged appropriately.
+ *
+ * \param[in] buf <tt>ogg_uint32_t</tt>: The maximum distance between key
+ * frames.
+ * \param[out] buf <tt>ogg_uint32_t</tt>: The actual maximum distance set.
+ * \retval OC_FAULT \a theora_state or \a buf is <tt>NULL</tt>.
+ * \retval OC_EINVAL \a buf_sz is not <tt>sizeof(ogg_uint32_t)</tt>.
+ * \retval OC_IMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE (4)
+
+/**Set the granule position.
+ * Call this after a seek, to update the internal granulepos
+ * in the decoder, to insure that subsequent frames are marked
+ * properly. If you track timestamps yourself and do not use
+ * the granule postion returned by the decoder, then you do
+ * not need to use this control.
+ */
+#define TH_DECCTL_SET_GRANPOS (5)
+
+/**\anchor encctlcodes_old */
+
+/**Sets the quantization parameters to use.
+ * The parameters are copied, not stored by reference, so they can be freed
+ * after this call.
+ * <tt>NULL</tt> may be specified to revert to the default parameters.
+ *
+ * \param[in] buf #th_quant_info
+ * \retval OC_FAULT \a theora_state is <tt>NULL</tt>.
+ * \retval OC_EINVAL Encoding has already begun, the quantization parameters
+ * are not acceptable to this version of the encoder,
+ * \a buf is <tt>NULL</tt> and \a buf_sz is not zero,
+ * or \a buf is non-<tt>NULL</tt> and \a buf_sz is
+ * not <tt>sizeof(#th_quant_info)</tt>.
+ * \retval OC_IMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_QUANT_PARAMS (2)
+
+/**Disables any encoder features that would prevent lossless transcoding back
+ * to VP3.
+ * This primarily means disabling block-level QI values and not using 4MV mode
+ * when any of the luma blocks in a macro block are not coded.
+ * It also includes using the VP3 quantization tables and Huffman codes; if you
+ * set them explicitly after calling this function, the resulting stream will
+ * not be VP3-compatible.
+ * If you enable VP3-compatibility when encoding 4:2:2 or 4:4:4 source
+ * material, or when using a picture region smaller than the full frame (e.g.
+ * a non-multiple-of-16 width or height), then non-VP3 bitstream features will
+ * still be disabled, but the stream will still not be VP3-compatible, as VP3
+ * was not capable of encoding such formats.
+ * If you call this after encoding has already begun, then the quantization
+ * tables and codebooks cannot be changed, but the frame-level features will
+ * be enabled or disabled as requested.
+ *
+ * \param[in] buf <tt>int</tt>: a non-zero value to enable VP3 compatibility,
+ * or 0 to disable it (the default).
+ * \param[out] buf <tt>int</tt>: 1 if all bitstream features required for
+ * VP3-compatibility could be set, and 0 otherwise.
+ * The latter will be returned if the pixel format is not
+ * 4:2:0, the picture region is smaller than the full frame,
+ * or if encoding has begun, preventing the quantization
+ * tables and codebooks from being set.
+ * \retval OC_FAULT \a theora_state or \a buf is <tt>NULL</tt>.
+ * \retval OC_EINVAL \a buf_sz is not <tt>sizeof(int)</tt>.
+ * \retval OC_IMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_VP3_COMPATIBLE (10)
+
+/**Gets the maximum speed level.
+ * Higher speed levels favor quicker encoding over better quality per bit.
+ * Depending on the encoding mode, and the internal algorithms used, quality
+ * may actually improve, but in this case bitrate will also likely increase.
+ * In any case, overall rate/distortion performance will probably decrease.
+ * The maximum value, and the meaning of each value, may change depending on
+ * the current encoding mode (VBR vs. CQI, etc.).
+ *
+ * \param[out] buf int: The maximum encoding speed level.
+ * \retval OC_FAULT \a theora_state or \a buf is <tt>NULL</tt>.
+ * \retval OC_EINVAL \a buf_sz is not <tt>sizeof(int)</tt>.
+ * \retval OC_IMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_GET_SPLEVEL_MAX (12)
+
+/**Sets the speed level.
+ * By default a speed value of 1 is used.
+ *
+ * \param[in] buf int: The new encoding speed level.
+ * 0 is slowest, larger values use less CPU.
+ * \retval OC_FAULT \a theora_state or \a buf is <tt>NULL</tt>.
+ * \retval OC_EINVAL \a buf_sz is not <tt>sizeof(int)</tt>, or the
+ * encoding speed level is out of bounds.
+ * The maximum encoding speed level may be
+ * implementation- and encoding mode-specific, and can be
+ * obtained via #TH_ENCCTL_GET_SPLEVEL_MAX.
+ * \retval OC_IMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_SET_SPLEVEL (14)
+
+/*@}*/
+
+#define OC_FAULT -1 /**< General failure */
+#define OC_EINVAL -10 /**< Library encountered invalid internal data */
+#define OC_DISABLED -11 /**< Requested action is disabled */
+#define OC_BADHEADER -20 /**< Header packet was corrupt/invalid */
+#define OC_NOTFORMAT -21 /**< Packet is not a theora packet */
+#define OC_VERSION -22 /**< Bitstream version is not handled */
+#define OC_IMPL -23 /**< Feature or action not implemented */
+#define OC_BADPACKET -24 /**< Packet is corrupt */
+#define OC_NEWPACKET -25 /**< Packet is an (ignorable) unhandled extension */
+#define OC_DUPFRAME 1 /**< Packet is a dropped frame */
+
+/**
+ * Retrieve a human-readable string to identify the encoder vendor and version.
+ * \returns A version string.
+ */
+extern const char *theora_version_string(void);
+
+/**
+ * Retrieve a 32-bit version number.
+ * This number is composed of a 16-bit major version, 8-bit minor version
+ * and 8 bit sub-version, composed as follows:
+<pre>
+ (VERSION_MAJOR<<16) + (VERSION_MINOR<<8) + (VERSION_SUB)
+</pre>
+* \returns The version number.
+*/
+extern ogg_uint32_t theora_version_number(void);
+
+/**
+ * Initialize the theora encoder.
+ * \param th The theora_state handle to initialize for encoding.
+ * \param ti A theora_info struct filled with the desired encoding parameters.
+ * \retval 0 Success
+ */
+extern int theora_encode_init(theora_state *th, theora_info *ti);
+
+/**
+ * Submit a YUV buffer to the theora encoder.
+ * \param t A theora_state handle previously initialized for encoding.
+ * \param yuv A buffer of YUV data to encode. Note that both the yuv_buffer
+ * struct and the luma/chroma buffers within should be allocated by
+ * the user.
+ * \retval OC_EINVAL Encoder is not ready, or is finished.
+ * \retval -1 The size of the given frame differs from those previously input
+ * \retval 0 Success
+ */
+extern int theora_encode_YUVin(theora_state *t, yuv_buffer *yuv);
+
+/**
+ * Request the next packet of encoded video.
+ * The encoded data is placed in a user-provided ogg_packet structure.
+ * \param t A theora_state handle previously initialized for encoding.
+ * \param last_p whether this is the last packet the encoder should produce.
+ * \param op An ogg_packet structure to fill. libtheora will set all
+ * elements of this structure, including a pointer to encoded
+ * data. The memory for the encoded data is owned by libtheora.
+ * \retval 0 No internal storage exists OR no packet is ready
+ * \retval -1 The encoding process has completed
+ * \retval 1 Success
+ */
+extern int theora_encode_packetout( theora_state *t, int last_p,
+ ogg_packet *op);
+
+/**
+ * Request a packet containing the initial header.
+ * A pointer to the header data is placed in a user-provided ogg_packet
+ * structure.
+ * \param t A theora_state handle previously initialized for encoding.
+ * \param op An ogg_packet structure to fill. libtheora will set all
+ * elements of this structure, including a pointer to the header
+ * data. The memory for the header data is owned by libtheora.
+ * \retval 0 Success
+ */
+extern int theora_encode_header(theora_state *t, ogg_packet *op);
+
+/**
+ * Request a comment header packet from provided metadata.
+ * A pointer to the comment data is placed in a user-provided ogg_packet
+ * structure.
+ * \param tc A theora_comment structure filled with the desired metadata
+ * \param op An ogg_packet structure to fill. libtheora will set all
+ * elements of this structure, including a pointer to the encoded
+ * comment data. The memory for the comment data is owned by
+ * libtheora.
+ * \retval 0 Success
+ */
+extern int theora_encode_comment(theora_comment *tc, ogg_packet *op);
+
+/**
+ * Request a packet containing the codebook tables for the stream.
+ * A pointer to the codebook data is placed in a user-provided ogg_packet
+ * structure.
+ * \param t A theora_state handle previously initialized for encoding.
+ * \param op An ogg_packet structure to fill. libtheora will set all
+ * elements of this structure, including a pointer to the codebook
+ * data. The memory for the header data is owned by libtheora.
+ * \retval 0 Success
+ */
+extern int theora_encode_tables(theora_state *t, ogg_packet *op);
+
+/**
+ * Decode an Ogg packet, with the expectation that the packet contains
+ * an initial header, comment data or codebook tables.
+ *
+ * \param ci A theora_info structure to fill. This must have been previously
+ * initialized with theora_info_init(). If \a op contains an initial
+ * header, theora_decode_header() will fill \a ci with the
+ * parsed header values. If \a op contains codebook tables,
+ * theora_decode_header() will parse these and attach an internal
+ * representation to \a ci->codec_setup.
+ * \param cc A theora_comment structure to fill. If \a op contains comment
+ * data, theora_decode_header() will fill \a cc with the parsed
+ * comments.
+ * \param op An ogg_packet structure which you expect contains an initial
+ * header, comment data or codebook tables.
+ *
+ * \retval OC_BADHEADER \a op is NULL; OR the first byte of \a op->packet
+ * has the signature of an initial packet, but op is
+ * not a b_o_s packet; OR this packet has the signature
+ * of an initial header packet, but an initial header
+ * packet has already been seen; OR this packet has the
+ * signature of a comment packet, but the initial header
+ * has not yet been seen; OR this packet has the signature
+ * of a comment packet, but contains invalid data; OR
+ * this packet has the signature of codebook tables,
+ * but the initial header or comments have not yet
+ * been seen; OR this packet has the signature of codebook
+ * tables, but contains invalid data;
+ * OR the stream being decoded has a compatible version
+ * but this packet does not have the signature of a
+ * theora initial header, comments, or codebook packet
+ * \retval OC_VERSION The packet data of \a op is an initial header with
+ * a version which is incompatible with this version of
+ * libtheora.
+ * \retval OC_NEWPACKET the stream being decoded has an incompatible (future)
+ * version and contains an unknown signature.
+ * \retval 0 Success
+ *
+ * \note The normal usage is that theora_decode_header() be called on the
+ * first three packets of a theora logical bitstream in succession.
+ */
+extern int theora_decode_header(theora_info *ci, theora_comment *cc,
+ ogg_packet *op);
+
+/**
+ * Initialize a theora_state handle for decoding.
+ * \param th The theora_state handle to initialize.
+ * \param c A theora_info struct filled with the desired decoding parameters.
+ * This is of course usually obtained from a previous call to
+ * theora_decode_header().
+ * \retval 0 Success
+ */
+extern int theora_decode_init(theora_state *th, theora_info *c);
+
+/**
+ * Input a packet containing encoded data into the theora decoder.
+ * \param th A theora_state handle previously initialized for decoding.
+ * \param op An ogg_packet containing encoded theora data.
+ * \retval 0 Success
+ * \retval OC_BADPACKET \a op does not contain encoded video data
+ */
+extern int theora_decode_packetin(theora_state *th,ogg_packet *op);
+
+/**
+ * Output the next available frame of decoded YUV data.
+ * \param th A theora_state handle previously initialized for decoding.
+ * \param yuv A yuv_buffer in which libtheora should place the decoded data.
+ * Note that the buffer struct itself is allocated by the user, but
+ * that the luma and chroma pointers will be filled in by the
+ * library. Also note that these luma and chroma regions should be
+ * considered read-only by the user.
+ * \retval 0 Success
+ */
+extern int theora_decode_YUVout(theora_state *th,yuv_buffer *yuv);
+
+/**
+ * Report whether a theora packet is a header or not
+ * This function does no verification beyond checking the header
+ * flag bit so it should not be used for bitstream identification;
+ * use theora_decode_header() for that.
+ *
+ * \param op An ogg_packet containing encoded theora data.
+ * \retval 1 The packet is a header packet
+ * \retval 0 The packet is not a header packet (and so contains frame data)
+ *
+ * Thus function was added in the 1.0alpha4 release.
+ */
+extern int theora_packet_isheader(ogg_packet *op);
+
+/**
+ * Report whether a theora packet is a keyframe or not
+ *
+ * \param op An ogg_packet containing encoded theora data.
+ * \retval 1 The packet contains a keyframe image
+ * \retval 0 The packet is contains an interframe delta
+ * \retval -1 The packet is not an image data packet at all
+ *
+ * Thus function was added in the 1.0alpha4 release.
+ */
+extern int theora_packet_iskeyframe(ogg_packet *op);
+
+/**
+ * Report the granulepos shift radix
+ *
+ * When embedded in Ogg, Theora uses a two-part granulepos,
+ * splitting the 64-bit field into two pieces. The more-significant
+ * section represents the frame count at the last keyframe,
+ * and the less-significant section represents the count of
+ * frames since the last keyframe. In this way the overall
+ * field is still non-decreasing with time, but usefully encodes
+ * a pointer to the last keyframe, which is necessary for
+ * correctly restarting decode after a seek.
+ *
+ * This function reports the number of bits used to represent
+ * the distance to the last keyframe, and thus how the granulepos
+ * field must be shifted or masked to obtain the two parts.
+ *
+ * Since libtheora returns compressed data in an ogg_packet
+ * structure, this may be generally useful even if the Theora
+ * packets are not being used in an Ogg container.
+ *
+ * \param ti A previously initialized theora_info struct
+ * \returns The bit shift dividing the two granulepos fields
+ *
+ * This function was added in the 1.0alpha5 release.
+ */
+int theora_granule_shift(theora_info *ti);
+
+/**
+ * Convert a granulepos to an absolute frame index, starting at 0.
+ * The granulepos is interpreted in the context of a given theora_state handle.
+ *
+ * Note that while the granulepos encodes the frame count (i.e. starting
+ * from 1) this call returns the frame index, starting from zero. Thus
+ * One can calculate the presentation time by multiplying the index by
+ * the rate.
+ *
+ * \param th A previously initialized theora_state handle (encode or decode)
+ * \param granulepos The granulepos to convert.
+ * \returns The frame index corresponding to \a granulepos.
+ * \retval -1 The given granulepos is undefined (i.e. negative)
+ *
+ * Thus function was added in the 1.0alpha4 release.
+ */
+extern ogg_int64_t theora_granule_frame(theora_state *th,ogg_int64_t granulepos);
+
+/**
+ * Convert a granulepos to absolute time in seconds. The granulepos is
+ * interpreted in the context of a given theora_state handle, and gives
+ * the end time of a frame's presentation as used in Ogg mux ordering.
+ *
+ * \param th A previously initialized theora_state handle (encode or decode)
+ * \param granulepos The granulepos to convert.
+ * \returns The absolute time in seconds corresponding to \a granulepos.
+ * This is the "end time" for the frame, or the latest time it should
+ * be displayed.
+ * It is not the presentation time.
+ * \retval -1. The given granulepos is undefined (i.e. negative), or
+ * \retval -1. The function has been disabled because floating
+ * point support is not available.
+ */
+extern double theora_granule_time(theora_state *th,ogg_int64_t granulepos);
+
+/**
+ * Initialize a theora_info structure. All values within the given theora_info
+ * structure are initialized, and space is allocated within libtheora for
+ * internal codec setup data.
+ * \param c A theora_info struct to initialize.
+ */
+extern void theora_info_init(theora_info *c);
+
+/**
+ * Clear a theora_info structure. All values within the given theora_info
+ * structure are cleared, and associated internal codec setup data is freed.
+ * \param c A theora_info struct to initialize.
+ */
+extern void theora_info_clear(theora_info *c);
+
+/**
+ * Free all internal data associated with a theora_state handle.
+ * \param t A theora_state handle.
+ */
+extern void theora_clear(theora_state *t);
+
+/**
+ * Initialize an allocated theora_comment structure
+ * \param tc An allocated theora_comment structure
+ **/
+extern void theora_comment_init(theora_comment *tc);
+
+/**
+ * Add a comment to an initialized theora_comment structure
+ * \param tc A previously initialized theora comment structure
+ * \param comment A null-terminated string encoding the comment in the form
+ * "TAG=the value"
+ *
+ * Neither theora_comment_add() nor theora_comment_add_tag() support
+ * comments containing null values, although the bitstream format
+ * supports this. To add such comments you will need to manipulate
+ * the theora_comment structure directly.
+ **/
+
+extern void theora_comment_add(theora_comment *tc, char *comment);
+
+/**
+ * Add a comment to an initialized theora_comment structure.
+ * \param tc A previously initialized theora comment structure
+ * \param tag A null-terminated string containing the tag
+ * associated with the comment.
+ * \param value The corresponding value as a null-terminated string
+ *
+ * Neither theora_comment_add() nor theora_comment_add_tag() support
+ * comments containing null values, although the bitstream format
+ * supports this. To add such comments you will need to manipulate
+ * the theora_comment structure directly.
+ **/
+extern void theora_comment_add_tag(theora_comment *tc,
+ char *tag, char *value);
+
+/**
+ * Look up a comment value by tag.
+ * \param tc Tn initialized theora_comment structure
+ * \param tag The tag to look up
+ * \param count The instance of the tag. The same tag can appear multiple
+ * times, each with a distinct and ordered value, so an index
+ * is required to retrieve them all.
+ * \returns A pointer to the queried tag's value
+ * \retval NULL No matching tag is found
+ *
+ * \note Use theora_comment_query_count() to get the legal range for the
+ * count parameter.
+ **/
+
+extern char *theora_comment_query(theora_comment *tc, char *tag, int count);
+
+/** Look up the number of instances of a tag.
+ * \param tc An initialized theora_comment structure
+ * \param tag The tag to look up
+ * \returns The number on instances of a particular tag.
+ *
+ * Call this first when querying for a specific tag and then interate
+ * over the number of instances with separate calls to
+ * theora_comment_query() to retrieve all instances in order.
+ **/
+extern int theora_comment_query_count(theora_comment *tc, char *tag);
+
+/**
+ * Clear an allocated theora_comment struct so that it can be freed.
+ * \param tc An allocated theora_comment structure.
+ **/
+extern void theora_comment_clear(theora_comment *tc);
+
+/**Encoder control function.
+ * This is used to provide advanced control the encoding process.
+ * \param th A #theora_state handle.
+ * \param req The control code to process.
+ * See \ref encctlcodes_old "the list of available
+ * control codes" for details.
+ * \param buf The parameters for this control code.
+ * \param buf_sz The size of the parameter buffer.*/
+extern int theora_control(theora_state *th,int req,void *buf,size_t buf_sz);
+
+/* @} */ /* end oldfuncs doxygen group */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _O_THEORA_H_ */
diff --git a/media/libtheora/include/theora/theoradec.h b/media/libtheora/include/theora/theoradec.h
new file mode 100644
index 000000000..6177af321
--- /dev/null
+++ b/media/libtheora/include/theora/theoradec.h
@@ -0,0 +1,326 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: theora.h,v 1.8 2004/03/15 22:17:32 derf Exp $
+
+ ********************************************************************/
+
+/**\file
+ * The <tt>libtheoradec</tt> C decoding API.*/
+
+#if !defined(_O_THEORA_THEORADEC_H_)
+# define _O_THEORA_THEORADEC_H_ (1)
+# include <stddef.h>
+# include <ogg/ogg.h>
+# include "codec.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+
+/**\name th_decode_ctl() codes
+ * \anchor decctlcodes
+ * These are the available request codes for th_decode_ctl().
+ * By convention, these are odd, to distinguish them from the
+ * \ref encctlcodes "encoder control codes".
+ * Keep any experimental or vendor-specific values above \c 0x8000.*/
+/*@{*/
+/**Gets the maximum post-processing level.
+ * The decoder supports a post-processing filter that can improve
+ * the appearance of the decoded images. This returns the highest
+ * level setting for this post-processor, corresponding to maximum
+ * improvement and computational expense.
+ *
+ * \param[out] _buf int: The maximum post-processing level.
+ * \retval TH_EFAULT \a _dec_ctx or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_DECCTL_GET_PPLEVEL_MAX (1)
+/**Sets the post-processing level.
+ * By default, post-processing is disabled.
+ *
+ * Sets the level of post-processing to use when decoding the
+ * compressed stream. This must be a value between zero (off)
+ * and the maximum returned by TH_DECCTL_GET_PPLEVEL_MAX.
+ *
+ * \param[in] _buf int: The new post-processing level.
+ * 0 to disable; larger values use more CPU.
+ * \retval TH_EFAULT \a _dec_ctx or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>, or the
+ * post-processing level is out of bounds.
+ * The maximum post-processing level may be
+ * implementation-specific, and can be obtained via
+ * #TH_DECCTL_GET_PPLEVEL_MAX.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_DECCTL_SET_PPLEVEL (3)
+/**Sets the granule position.
+ * Call this after a seek, before decoding the first frame, to ensure that the
+ * proper granule position is returned for all subsequent frames.
+ * If you track timestamps yourself and do not use the granule position
+ * returned by the decoder, then you need not call this function.
+ *
+ * \param[in] _buf <tt>ogg_int64_t</tt>: The granule position of the next
+ * frame.
+ * \retval TH_EFAULT \a _dec_ctx or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(ogg_int64_t)</tt>, or the
+ * granule position is negative.*/
+#define TH_DECCTL_SET_GRANPOS (5)
+/**Sets the striped decode callback function.
+ * If set, this function will be called as each piece of a frame is fully
+ * decoded in th_decode_packetin().
+ * You can pass in a #th_stripe_callback with
+ * th_stripe_callback#stripe_decoded set to <tt>NULL</tt> to disable the
+ * callbacks at any point.
+ * Enabling striped decode does not prevent you from calling
+ * th_decode_ycbcr_out() after the frame is fully decoded.
+ *
+ * \param[in] _buf #th_stripe_callback: The callback parameters.
+ * \retval TH_EFAULT \a _dec_ctx or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not
+ * <tt>sizeof(th_stripe_callback)</tt>.*/
+#define TH_DECCTL_SET_STRIPE_CB (7)
+
+/**Enables telemetry and sets the macroblock display mode */
+#define TH_DECCTL_SET_TELEMETRY_MBMODE (9)
+/**Enables telemetry and sets the motion vector display mode */
+#define TH_DECCTL_SET_TELEMETRY_MV (11)
+/**Enables telemetry and sets the adaptive quantization display mode */
+#define TH_DECCTL_SET_TELEMETRY_QI (13)
+/**Enables telemetry and sets the bitstream breakdown visualization mode */
+#define TH_DECCTL_SET_TELEMETRY_BITS (15)
+/*@}*/
+
+
+
+/**A callback function for striped decode.
+ * This is a function pointer to an application-provided function that will be
+ * called each time a section of the image is fully decoded in
+ * th_decode_packetin().
+ * This allows the application to process the section immediately, while it is
+ * still in cache.
+ * Note that the frame is decoded bottom to top, so \a _yfrag0 will steadily
+ * decrease with each call until it reaches 0, at which point the full frame
+ * is decoded.
+ * The number of fragment rows made available in each call depends on the pixel
+ * format and the number of post-processing filters enabled, and may not even
+ * be constant for the entire frame.
+ * If a non-<tt>NULL</tt> \a _granpos pointer is passed to
+ * th_decode_packetin(), the granule position for the frame will be stored
+ * in it before the first callback is made.
+ * If an entire frame is dropped (a 0-byte packet), then no callbacks will be
+ * made at all for that frame.
+ * \param _ctx An application-provided context pointer.
+ * \param _buf The image buffer for the decoded frame.
+ * \param _yfrag0 The Y coordinate of the first row of 8x8 fragments
+ * decoded.
+ * Multiply this by 8 to obtain the pixel row number in the
+ * luma plane.
+ * If the chroma planes are subsampled in the Y direction,
+ * this will always be divisible by two.
+ * \param _yfrag_end The Y coordinate of the first row of 8x8 fragments past
+ * the newly decoded section.
+ * If the chroma planes are subsampled in the Y direction,
+ * this will always be divisible by two.
+ * I.e., this section contains fragment rows
+ * <tt>\a _yfrag0 ...\a _yfrag_end -1</tt>.*/
+typedef void (*th_stripe_decoded_func)(void *_ctx,th_ycbcr_buffer _buf,
+ int _yfrag0,int _yfrag_end);
+
+/**The striped decode callback data to pass to #TH_DECCTL_SET_STRIPE_CB.*/
+typedef struct{
+ /**An application-provided context pointer.
+ * This will be passed back verbatim to the application.*/
+ void *ctx;
+ /**The callback function pointer.*/
+ th_stripe_decoded_func stripe_decoded;
+}th_stripe_callback;
+
+
+
+/**\name Decoder state
+ The following data structures are opaque, and their contents are not
+ publicly defined by this API.
+ Referring to their internals directly is unsupported, and may break without
+ warning.*/
+/*@{*/
+/**The decoder context.*/
+typedef struct th_dec_ctx th_dec_ctx;
+/**Setup information.
+ This contains auxiliary information (Huffman tables and quantization
+ parameters) decoded from the setup header by th_decode_headerin() to be
+ passed to th_decode_alloc().
+ It can be re-used to initialize any number of decoders, and can be freed
+ via th_setup_free() at any time.*/
+typedef struct th_setup_info th_setup_info;
+/*@}*/
+
+
+
+/**\defgroup decfuncs Functions for Decoding*/
+/*@{*/
+/**\name Functions for decoding
+ * You must link to <tt>libtheoradec</tt> if you use any of the
+ * functions in this section.
+ *
+ * The functions are listed in the order they are used in a typical decode.
+ * The basic steps are:
+ * - Parse the header packets by repeatedly calling th_decode_headerin().
+ * - Allocate a #th_dec_ctx handle with th_decode_alloc().
+ * - Call th_setup_free() to free any memory used for codec setup
+ * information.
+ * - Perform any additional decoder configuration with th_decode_ctl().
+ * - For each video data packet:
+ * - Submit the packet to the decoder via th_decode_packetin().
+ * - Retrieve the uncompressed video data via th_decode_ycbcr_out().
+ * - Call th_decode_free() to release all decoder memory.*/
+/*@{*/
+/**Decodes the header packets of a Theora stream.
+ * This should be called on the initial packets of the stream, in succession,
+ * until it returns <tt>0</tt>, indicating that all headers have been
+ * processed, or an error is encountered.
+ * At least three header packets are required, and additional optional header
+ * packets may follow.
+ * This can be used on the first packet of any logical stream to determine if
+ * that stream is a Theora stream.
+ * \param _info A #th_info structure to fill in.
+ * This must have been previously initialized with
+ * th_info_init().
+ * The application may immediately begin using the contents of
+ * this structure after the first header is decoded, though it
+ * must continue to be passed in on all subsequent calls.
+ * \param _tc A #th_comment structure to fill in.
+ * The application may immediately begin using the contents of
+ * this structure after the second header is decoded, though it
+ * must continue to be passed in on all subsequent calls.
+ * \param _setup Returns a pointer to additional, private setup information
+ * needed by the decoder.
+ * The contents of this pointer must be initialized to
+ * <tt>NULL</tt> on the first call, and the returned value must
+ * continue to be passed in on all subsequent calls.
+ * \param _op An <tt>ogg_packet</tt> structure which contains one of the
+ * initial packets of an Ogg logical stream.
+ * \return A positive value indicates that a Theora header was successfully
+ * processed.
+ * \retval 0 The first video data packet was encountered after all
+ * required header packets were parsed.
+ * The packet just passed in on this call should be saved
+ * and fed to th_decode_packetin() to begin decoding
+ * video data.
+ * \retval TH_EFAULT One of \a _info, \a _tc, or \a _setup was
+ * <tt>NULL</tt>.
+ * \retval TH_EBADHEADER \a _op was <tt>NULL</tt>, the packet was not the next
+ * header packet in the expected sequence, or the format
+ * of the header data was invalid.
+ * \retval TH_EVERSION The packet data was a Theora info header, but for a
+ * bitstream version not decodable with this version of
+ * <tt>libtheoradec</tt>.
+ * \retval TH_ENOTFORMAT The packet was not a Theora header.
+ */
+extern int th_decode_headerin(th_info *_info,th_comment *_tc,
+ th_setup_info **_setup,ogg_packet *_op);
+/**Allocates a decoder instance.
+ *
+ * <b>Security Warning:</b> The Theora format supports very large frame sizes,
+ * potentially even larger than the address space of a 32-bit machine, and
+ * creating a decoder context allocates the space for several frames of data.
+ * If the allocation fails here, your program will crash, possibly at some
+ * future point because the OS kernel returned a valid memory range and will
+ * only fail when it tries to map the pages in it the first time they are
+ * used.
+ * Even if it succeeds, you may experience a denial of service if the frame
+ * size is large enough to cause excessive paging.
+ * If you are integrating libtheora in a larger application where such things
+ * are undesirable, it is highly recommended that you check the frame size in
+ * \a _info before calling this function and refuse to decode streams where it
+ * is larger than some reasonable maximum.
+ * libtheora will not check this for you, because there may be machines that
+ * can handle such streams and applications that wish to.
+ * \param _info A #th_info struct filled via th_decode_headerin().
+ * \param _setup A #th_setup_info handle returned via
+ * th_decode_headerin().
+ * \return The initialized #th_dec_ctx handle.
+ * \retval NULL If the decoding parameters were invalid.*/
+extern th_dec_ctx *th_decode_alloc(const th_info *_info,
+ const th_setup_info *_setup);
+/**Releases all storage used for the decoder setup information.
+ * This should be called after you no longer want to create any decoders for
+ * a stream whose headers you have parsed with th_decode_headerin().
+ * \param _setup The setup information to free.
+ * This can safely be <tt>NULL</tt>.*/
+extern void th_setup_free(th_setup_info *_setup);
+/**Decoder control function.
+ * This is used to provide advanced control of the decoding process.
+ * \param _dec A #th_dec_ctx handle.
+ * \param _req The control code to process.
+ * See \ref decctlcodes "the list of available control codes"
+ * for details.
+ * \param _buf The parameters for this control code.
+ * \param _buf_sz The size of the parameter buffer.*/
+extern int th_decode_ctl(th_dec_ctx *_dec,int _req,void *_buf,
+ size_t _buf_sz);
+/**Submits a packet containing encoded video data to the decoder.
+ * \param _dec A #th_dec_ctx handle.
+ * \param _op An <tt>ogg_packet</tt> containing encoded video data.
+ * \param _granpos Returns the granule position of the decoded packet.
+ * If non-<tt>NULL</tt>, the granule position for this specific
+ * packet is stored in this location.
+ * This is computed incrementally from previously decoded
+ * packets.
+ * After a seek, the correct granule position must be set via
+ * #TH_DECCTL_SET_GRANPOS for this to work properly.
+ * \retval 0 Success.
+ * A new decoded frame can be retrieved by calling
+ * th_decode_ycbcr_out().
+ * \retval TH_DUPFRAME The packet represented a dropped frame (either a
+ * 0-byte frame or an INTER frame with no coded blocks).
+ * The player can skip the call to th_decode_ycbcr_out(),
+ * as the contents of the decoded frame buffer have not
+ * changed.
+ * \retval TH_EFAULT \a _dec or \a _op was <tt>NULL</tt>.
+ * \retval TH_EBADPACKET \a _op does not contain encoded video data.
+ * \retval TH_EIMPL The video data uses bitstream features which this
+ * library does not support.*/
+extern int th_decode_packetin(th_dec_ctx *_dec,const ogg_packet *_op,
+ ogg_int64_t *_granpos);
+/**Outputs the next available frame of decoded Y'CbCr data.
+ * If a striped decode callback has been set with #TH_DECCTL_SET_STRIPE_CB,
+ * then the application does not need to call this function.
+ * \param _dec A #th_dec_ctx handle.
+ * \param _ycbcr A video buffer structure to fill in.
+ * <tt>libtheoradec</tt> will fill in all the members of this
+ * structure, including the pointers to the uncompressed video
+ * data.
+ * The memory for this video data is owned by
+ * <tt>libtheoradec</tt>.
+ * It may be freed or overwritten without notification when
+ * subsequent frames are decoded.
+ * \retval 0 Success
+ * \retval TH_EFAULT \a _dec or \a _ycbcr was <tt>NULL</tt>.
+ */
+extern int th_decode_ycbcr_out(th_dec_ctx *_dec,
+ th_ycbcr_buffer _ycbcr);
+/**Frees an allocated decoder instance.
+ * \param _dec A #th_dec_ctx handle.*/
+extern void th_decode_free(th_dec_ctx *_dec);
+/*@}*/
+/*@}*/
+
+
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/media/libtheora/include/theora/theoraenc.h b/media/libtheora/include/theora/theoraenc.h
new file mode 100644
index 000000000..721ea89b9
--- /dev/null
+++ b/media/libtheora/include/theora/theoraenc.h
@@ -0,0 +1,540 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: theora.h,v 1.8 2004/03/15 22:17:32 derf Exp $
+
+ ********************************************************************/
+
+/**\file
+ * The <tt>libtheoraenc</tt> C encoding API.*/
+
+#if !defined(_O_THEORA_THEORAENC_H_)
+# define _O_THEORA_THEORAENC_H_ (1)
+# include <stddef.h>
+# include <ogg/ogg.h>
+# include "codec.h"
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+
+/**\name th_encode_ctl() codes
+ * \anchor encctlcodes
+ * These are the available request codes for th_encode_ctl().
+ * By convention, these are even, to distinguish them from the
+ * \ref decctlcodes "decoder control codes".
+ * Keep any experimental or vendor-specific values above \c 0x8000.*/
+/*@{*/
+/**Sets the Huffman tables to use.
+ * The tables are copied, not stored by reference, so they can be freed after
+ * this call.
+ * <tt>NULL</tt> may be specified to revert to the default tables.
+ *
+ * \param[in] _buf <tt>#th_huff_code[#TH_NHUFFMAN_TABLES][#TH_NDCT_TOKENS]</tt>
+ * \retval TH_EFAULT \a _enc is <tt>NULL</tt>.
+ * \retval TH_EINVAL Encoding has already begun or one or more of the given
+ * tables is not full or prefix-free, \a _buf is
+ * <tt>NULL</tt> and \a _buf_sz is not zero, or \a _buf is
+ * non-<tt>NULL</tt> and \a _buf_sz is not
+ * <tt>sizeof(#th_huff_code)*#TH_NHUFFMAN_TABLES*#TH_NDCT_TOKENS</tt>.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_HUFFMAN_CODES (0)
+/**Sets the quantization parameters to use.
+ * The parameters are copied, not stored by reference, so they can be freed
+ * after this call.
+ * <tt>NULL</tt> may be specified to revert to the default parameters.
+ *
+ * \param[in] _buf #th_quant_info
+ * \retval TH_EFAULT \a _enc is <tt>NULL</tt>.
+ * \retval TH_EINVAL Encoding has already begun, \a _buf is
+ * <tt>NULL</tt> and \a _buf_sz is not zero,
+ * or \a _buf is non-<tt>NULL</tt> and
+ * \a _buf_sz is not <tt>sizeof(#th_quant_info)</tt>.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_QUANT_PARAMS (2)
+/**Sets the maximum distance between key frames.
+ * This can be changed during an encode, but will be bounded by
+ * <tt>1<<th_info#keyframe_granule_shift</tt>.
+ * If it is set before encoding begins, th_info#keyframe_granule_shift will
+ * be enlarged appropriately.
+ *
+ * \param[in] _buf <tt>ogg_uint32_t</tt>: The maximum distance between key
+ * frames.
+ * \param[out] _buf <tt>ogg_uint32_t</tt>: The actual maximum distance set.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(ogg_uint32_t)</tt>.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_KEYFRAME_FREQUENCY_FORCE (4)
+/**Disables any encoder features that would prevent lossless transcoding back
+ * to VP3.
+ * This primarily means disabling block-adaptive quantization and always coding
+ * all four luma blocks in a macro block when 4MV is used.
+ * It also includes using the VP3 quantization tables and Huffman codes; if you
+ * set them explicitly after calling this function, the resulting stream will
+ * not be VP3-compatible.
+ * If you enable VP3-compatibility when encoding 4:2:2 or 4:4:4 source
+ * material, or when using a picture region smaller than the full frame (e.g.
+ * a non-multiple-of-16 width or height), then non-VP3 bitstream features will
+ * still be disabled, but the stream will still not be VP3-compatible, as VP3
+ * was not capable of encoding such formats.
+ * If you call this after encoding has already begun, then the quantization
+ * tables and codebooks cannot be changed, but the frame-level features will
+ * be enabled or disabled as requested.
+ *
+ * \param[in] _buf <tt>int</tt>: a non-zero value to enable VP3 compatibility,
+ * or 0 to disable it (the default).
+ * \param[out] _buf <tt>int</tt>: 1 if all bitstream features required for
+ * VP3-compatibility could be set, and 0 otherwise.
+ * The latter will be returned if the pixel format is not
+ * 4:2:0, the picture region is smaller than the full frame,
+ * or if encoding has begun, preventing the quantization
+ * tables and codebooks from being set.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_VP3_COMPATIBLE (10)
+/**Gets the maximum speed level.
+ * Higher speed levels favor quicker encoding over better quality per bit.
+ * Depending on the encoding mode, and the internal algorithms used, quality
+ * may actually improve, but in this case bitrate will also likely increase.
+ * In any case, overall rate/distortion performance will probably decrease.
+ * The maximum value, and the meaning of each value, may change depending on
+ * the current encoding mode (VBR vs. constant quality, etc.).
+ *
+ * \param[out] _buf <tt>int</tt>: The maximum encoding speed level.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>.
+ * \retval TH_EIMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_GET_SPLEVEL_MAX (12)
+/**Sets the speed level.
+ * The current speed level may be retrieved using #TH_ENCCTL_GET_SPLEVEL.
+ *
+ * \param[in] _buf <tt>int</tt>: The new encoding speed level.
+ * 0 is slowest, larger values use less CPU.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>, or the
+ * encoding speed level is out of bounds.
+ * The maximum encoding speed level may be
+ * implementation- and encoding mode-specific, and can be
+ * obtained via #TH_ENCCTL_GET_SPLEVEL_MAX.
+ * \retval TH_EIMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_SET_SPLEVEL (14)
+/**Gets the current speed level.
+ * The default speed level may vary according to encoder implementation, but if
+ * this control code is not supported (it returns #TH_EIMPL), the default may
+ * be assumed to be the slowest available speed (0).
+ * The maximum encoding speed level may be implementation- and encoding
+ * mode-specific, and can be obtained via #TH_ENCCTL_GET_SPLEVEL_MAX.
+ *
+ * \param[out] _buf <tt>int</tt>: The current encoding speed level.
+ * 0 is slowest, larger values use less CPU.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>.
+ * \retval TH_EIMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_GET_SPLEVEL (16)
+/**Sets the number of duplicates of the next frame to produce.
+ * Although libtheora can encode duplicate frames very cheaply, it costs some
+ * amount of CPU to detect them, and a run of duplicates cannot span a
+ * keyframe boundary.
+ * This control code tells the encoder to produce the specified number of extra
+ * duplicates of the next frame.
+ * This allows the encoder to make smarter keyframe placement decisions and
+ * rate control decisions, and reduces CPU usage as well, when compared to
+ * just submitting the same frame for encoding multiple times.
+ * This setting only applies to the next frame submitted for encoding.
+ * You MUST call th_encode_packetout() repeatedly until it returns 0, or the
+ * extra duplicate frames will be lost.
+ *
+ * \param[in] _buf <tt>int</tt>: The number of duplicates to produce.
+ * If this is negative or zero, no duplicates will be produced.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>, or the
+ * number of duplicates is greater than or equal to the
+ * maximum keyframe interval.
+ * In the latter case, NO duplicate frames will be produced.
+ * You must ensure that the maximum keyframe interval is set
+ * larger than the maximum number of duplicates you will
+ * ever wish to insert prior to encoding.
+ * \retval TH_EIMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_SET_DUP_COUNT (18)
+/**Modifies the default bitrate management behavior.
+ * Use to allow or disallow frame dropping, and to enable or disable capping
+ * bit reservoir overflows and underflows.
+ * See \ref encctlcodes "the list of available flags".
+ * The flags are set by default to
+ * <tt>#TH_RATECTL_DROP_FRAMES|#TH_RATECTL_CAP_OVERFLOW</tt>.
+ *
+ * \param[in] _buf <tt>int</tt>: Any combination of
+ * \ref ratectlflags "the available flags":
+ * - #TH_RATECTL_DROP_FRAMES: Enable frame dropping.
+ * - #TH_RATECTL_CAP_OVERFLOW: Don't bank excess bits for later
+ * use.
+ * - #TH_RATECTL_CAP_UNDERFLOW: Don't try to make up shortfalls
+ * later.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt> or rate control
+ * is not enabled.
+ * \retval TH_EIMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_SET_RATE_FLAGS (20)
+/**Sets the size of the bitrate management bit reservoir as a function
+ * of number of frames.
+ * The reservoir size affects how quickly bitrate management reacts to
+ * instantaneous changes in the video complexity.
+ * Larger reservoirs react more slowly, and provide better overall quality, but
+ * require more buffering by a client, adding more latency to live streams.
+ * By default, libtheora sets the reservoir to the maximum distance between
+ * keyframes, subject to a minimum and maximum limit.
+ * This call may be used to increase or decrease the reservoir, increasing or
+ * decreasing the allowed temporary variance in bitrate.
+ * An implementation may impose some limits on the size of a reservoir it can
+ * handle, in which case the actual reservoir size may not be exactly what was
+ * requested.
+ * The actual value set will be returned.
+ *
+ * \param[in] _buf <tt>int</tt>: Requested size of the reservoir measured in
+ * frames.
+ * \param[out] _buf <tt>int</tt>: The actual size of the reservoir set.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(int)</tt>, or rate control
+ * is not enabled. The buffer has an implementation
+ * defined minimum and maximum size and the value in _buf
+ * will be adjusted to match the actual value set.
+ * \retval TH_EIMPL Not supported by this implementation in the current
+ * encoding mode.*/
+#define TH_ENCCTL_SET_RATE_BUFFER (22)
+/**Enable pass 1 of two-pass encoding mode and retrieve the first pass metrics.
+ * Pass 1 mode must be enabled before the first frame is encoded, and a target
+ * bitrate must have already been specified to the encoder.
+ * Although this does not have to be the exact rate that will be used in the
+ * second pass, closer values may produce better results.
+ * The first call returns the size of the two-pass header data, along with some
+ * placeholder content, and sets the encoder into pass 1 mode implicitly.
+ * This call sets the encoder to pass 1 mode implicitly.
+ * Then, a subsequent call must be made after each call to
+ * th_encode_ycbcr_in() to retrieve the metrics for that frame.
+ * An additional, final call must be made to retrieve the summary data,
+ * containing such information as the total number of frames, etc.
+ * This must be stored in place of the placeholder data that was returned
+ * in the first call, before the frame metrics data.
+ * All of this data must be presented back to the encoder during pass 2 using
+ * #TH_ENCCTL_2PASS_IN.
+ *
+ * \param[out] <tt>char *</tt>_buf: Returns a pointer to internal storage
+ * containing the two pass metrics data.
+ * This storage is only valid until the next call, or until the
+ * encoder context is freed, and must be copied by the
+ * application.
+ * \retval >=0 The number of bytes of metric data available in the
+ * returned buffer.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL \a _buf_sz is not <tt>sizeof(char *)</tt>, no target
+ * bitrate has been set, or the first call was made after
+ * the first frame was submitted for encoding.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_2PASS_OUT (24)
+/**Submits two-pass encoding metric data collected the first encoding pass to
+ * the second pass.
+ * The first call must be made before the first frame is encoded, and a target
+ * bitrate must have already been specified to the encoder.
+ * It sets the encoder to pass 2 mode implicitly; this cannot be disabled.
+ * The encoder may require reading data from some or all of the frames in
+ * advance, depending on, e.g., the reservoir size used in the second pass.
+ * You must call this function repeatedly before each frame to provide data
+ * until either a) it fails to consume all of the data presented or b) all of
+ * the pass 1 data has been consumed.
+ * In the first case, you must save the remaining data to be presented after
+ * the next frame.
+ * You can call this function with a NULL argument to get an upper bound on
+ * the number of bytes that will be required before the next frame.
+ *
+ * When pass 2 is first enabled, the default bit reservoir is set to the entire
+ * file; this gives maximum flexibility but can lead to very high peak rates.
+ * You can subsequently set it to another value with #TH_ENCCTL_SET_RATE_BUFFER
+ * (e.g., to set it to the keyframe interval for non-live streaming), however,
+ * you may then need to provide more data before the next frame.
+ *
+ * \param[in] _buf <tt>char[]</tt>: A buffer containing the data returned by
+ * #TH_ENCCTL_2PASS_OUT in pass 1.
+ * You may pass <tt>NULL</tt> for \a _buf to return an upper
+ * bound on the number of additional bytes needed before the
+ * next frame.
+ * The summary data returned at the end of pass 1 must be at
+ * the head of the buffer on the first call with a
+ * non-<tt>NULL</tt> \a _buf, and the placeholder data
+ * returned at the start of pass 1 should be omitted.
+ * After each call you should advance this buffer by the number
+ * of bytes consumed.
+ * \retval >0 The number of bytes of metric data required/consumed.
+ * \retval 0 No more data is required before the next frame.
+ * \retval TH_EFAULT \a _enc is <tt>NULL</tt>.
+ * \retval TH_EINVAL No target bitrate has been set, or the first call was
+ * made after the first frame was submitted for
+ * encoding.
+ * \retval TH_ENOTFORMAT The data did not appear to be pass 1 from a compatible
+ * implementation of this library.
+ * \retval TH_EBADHEADER The data was invalid; this may be returned when
+ * attempting to read an aborted pass 1 file that still
+ * has the placeholder data in place of the summary
+ * data.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_2PASS_IN (26)
+/**Sets the current encoding quality.
+ * This is only valid so long as no bitrate has been specified, either through
+ * the #th_info struct used to initialize the encoder or through
+ * #TH_ENCCTL_SET_BITRATE (this restriction may be relaxed in a future
+ * version).
+ * If it is set before the headers are emitted, the target quality encoded in
+ * them will be updated.
+ *
+ * \param[in] _buf <tt>int</tt>: The new target quality, in the range 0...63,
+ * inclusive.
+ * \retval 0 Success.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL A target bitrate has already been specified, or the
+ * quality index was not in the range 0...63.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_QUALITY (28)
+/**Sets the current encoding bitrate.
+ * Once a bitrate is set, the encoder must use a rate-controlled mode for all
+ * future frames (this restriction may be relaxed in a future version).
+ * If it is set before the headers are emitted, the target bitrate encoded in
+ * them will be updated.
+ * Due to the buffer delay, the exact bitrate of each section of the encode is
+ * not guaranteed.
+ * The encoder may have already used more bits than allowed for the frames it
+ * has encoded, expecting to make them up in future frames, or it may have
+ * used fewer, holding the excess in reserve.
+ * The exact transition between the two bitrates is not well-defined by this
+ * API, but may be affected by flags set with #TH_ENCCTL_SET_RATE_FLAGS.
+ * After a number of frames equal to the buffer delay, one may expect further
+ * output to average at the target bitrate.
+ *
+ * \param[in] _buf <tt>long</tt>: The new target bitrate, in bits per second.
+ * \retval 0 Success.
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL The target bitrate was not positive.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_BITRATE (30)
+/**Sets the configuration to be compatible with that from the given setup
+ * header.
+ * This sets the Huffman codebooks and quantization parameters to match those
+ * found in the given setup header.
+ * This guarantees that packets encoded by this encoder will be decodable using
+ * a decoder configured with the passed-in setup header.
+ * It does <em>not</em> guarantee that th_encode_flushheader() will produce a
+ * bit-identical setup header, only that they will be compatible.
+ * If you need a bit-identical setup header, then use the one you passed into
+ * this command, and not the one returned by th_encode_flushheader().
+ *
+ * This also does <em>not</em> enable or disable VP3 compatibility; that is not
+ * signaled in the setup header (or anywhere else in the encoded stream), and
+ * is controlled independently by the #TH_ENCCTL_SET_VP3_COMPATIBLE function.
+ * If you wish to enable VP3 compatibility mode <em>and</em> want the codebooks
+ * and quantization parameters to match the given setup header, you should
+ * enable VP3 compatibility before invoking this command, otherwise the
+ * codebooks and quantization parameters will be reset to the VP3 defaults.
+ *
+ * The current encoder does not support Huffman codebooks which do not contain
+ * codewords for all 32 tokens.
+ * Such codebooks are legal, according to the specification, but cannot be
+ * configured with this function.
+ *
+ * \param[in] _buf <tt>unsigned char[]</tt>: The encoded setup header to copy
+ * the configuration from.
+ * This should be the original,
+ * undecoded setup header packet,
+ * and <em>not</em> a #th_setup_info
+ * structure filled in by
+ * th_decode_headerin().
+ * \retval TH_EFAULT \a _enc or \a _buf is <tt>NULL</tt>.
+ * \retval TH_EINVAL Encoding has already begun, so the codebooks and
+ * quantization parameters cannot be changed, or the
+ * data in the setup header was not supported by this
+ * encoder.
+ * \retval TH_EBADHEADER \a _buf did not contain a valid setup header packet.
+ * \retval TH_ENOTFORMAT \a _buf did not contain a Theora header at all.
+ * \retval TH_EIMPL Not supported by this implementation.*/
+#define TH_ENCCTL_SET_COMPAT_CONFIG (32)
+
+/*@}*/
+
+
+/**\name TH_ENCCTL_SET_RATE_FLAGS flags
+ * \anchor ratectlflags
+ * These are the flags available for use with #TH_ENCCTL_SET_RATE_FLAGS.*/
+/*@{*/
+/**Drop frames to keep within bitrate buffer constraints.
+ * This can have a severe impact on quality, but is the only way to ensure that
+ * bitrate targets are met at low rates during sudden bursts of activity.*/
+#define TH_RATECTL_DROP_FRAMES (0x1)
+/**Ignore bitrate buffer overflows.
+ * If the encoder uses so few bits that the reservoir of available bits
+ * overflows, ignore the excess.
+ * The encoder will not try to use these extra bits in future frames.
+ * At high rates this may cause the result to be undersized, but allows a
+ * client to play the stream using a finite buffer; it should normally be
+ * enabled.*/
+#define TH_RATECTL_CAP_OVERFLOW (0x2)
+/**Ignore bitrate buffer underflows.
+ * If the encoder uses so many bits that the reservoir of available bits
+ * underflows, ignore the deficit.
+ * The encoder will not try to make up these extra bits in future frames.
+ * At low rates this may cause the result to be oversized; it should normally
+ * be disabled.*/
+#define TH_RATECTL_CAP_UNDERFLOW (0x4)
+/*@}*/
+
+
+
+/**The quantization parameters used by VP3.*/
+extern const th_quant_info TH_VP31_QUANT_INFO;
+
+/**The Huffman tables used by VP3.*/
+extern const th_huff_code
+ TH_VP31_HUFF_CODES[TH_NHUFFMAN_TABLES][TH_NDCT_TOKENS];
+
+
+
+/**\name Encoder state
+ The following data structure is opaque, and its contents are not publicly
+ defined by this API.
+ Referring to its internals directly is unsupported, and may break without
+ warning.*/
+/*@{*/
+/**The encoder context.*/
+typedef struct th_enc_ctx th_enc_ctx;
+/*@}*/
+
+
+
+/**\defgroup encfuncs Functions for Encoding*/
+/*@{*/
+/**\name Functions for encoding
+ * You must link to <tt>libtheoraenc</tt> and <tt>libtheoradec</tt>
+ * if you use any of the functions in this section.
+ *
+ * The functions are listed in the order they are used in a typical encode.
+ * The basic steps are:
+ * - Fill in a #th_info structure with details on the format of the video you
+ * wish to encode.
+ * - Allocate a #th_enc_ctx handle with th_encode_alloc().
+ * - Perform any additional encoder configuration required with
+ * th_encode_ctl().
+ * - Repeatedly call th_encode_flushheader() to retrieve all the header
+ * packets.
+ * - For each uncompressed frame:
+ * - Submit the uncompressed frame via th_encode_ycbcr_in()
+ * - Repeatedly call th_encode_packetout() to retrieve any video data packets
+ * that are ready.
+ * - Call th_encode_free() to release all encoder memory.*/
+/*@{*/
+/**Allocates an encoder instance.
+ * \param _info A #th_info struct filled with the desired encoding parameters.
+ * \return The initialized #th_enc_ctx handle.
+ * \retval NULL If the encoding parameters were invalid.*/
+extern th_enc_ctx *th_encode_alloc(const th_info *_info);
+/**Encoder control function.
+ * This is used to provide advanced control the encoding process.
+ * \param _enc A #th_enc_ctx handle.
+ * \param _req The control code to process.
+ * See \ref encctlcodes "the list of available control codes"
+ * for details.
+ * \param _buf The parameters for this control code.
+ * \param _buf_sz The size of the parameter buffer.*/
+extern int th_encode_ctl(th_enc_ctx *_enc,int _req,void *_buf,size_t _buf_sz);
+/**Outputs the next header packet.
+ * This should be called repeatedly after encoder initialization until it
+ * returns 0 in order to get all of the header packets, in order, before
+ * encoding actual video data.
+ * \param _enc A #th_enc_ctx handle.
+ * \param _comments The metadata to place in the comment header, when it is
+ * encoded.
+ * \param _op An <tt>ogg_packet</tt> structure to fill.
+ * All of the elements of this structure will be set,
+ * including a pointer to the header data.
+ * The memory for the header data is owned by
+ * <tt>libtheoraenc</tt>, and may be invalidated when the
+ * next encoder function is called.
+ * \return A positive value indicates that a header packet was successfully
+ * produced.
+ * \retval 0 No packet was produced, and no more header packets remain.
+ * \retval TH_EFAULT \a _enc, \a _comments, or \a _op was <tt>NULL</tt>.*/
+extern int th_encode_flushheader(th_enc_ctx *_enc,
+ th_comment *_comments,ogg_packet *_op);
+/**Submits an uncompressed frame to the encoder.
+ * \param _enc A #th_enc_ctx handle.
+ * \param _ycbcr A buffer of Y'CbCr data to encode.
+ * If the width and height of the buffer matches the frame size
+ * the encoder was initialized with, the encoder will only
+ * reference the portion inside the picture region.
+ * Any data outside this region will be ignored, and need not map
+ * to a valid address.
+ * Alternatively, you can pass a buffer equal to the size of the
+ * picture region, if this is less than the full frame size.
+ * When using subsampled chroma planes, odd picture sizes or odd
+ * picture offsets may require an unexpected chroma plane size,
+ * and their use is generally discouraged, as they will not be
+ * well-supported by players and other media frameworks.
+ * See Section 4.4 of
+ * <a href="http://www.theora.org/doc/Theora.pdf">the Theora
+ * specification</a> for details if you wish to use them anyway.
+ * \retval 0 Success.
+ * \retval TH_EFAULT \a _enc or \a _ycbcr is <tt>NULL</tt>.
+ * \retval TH_EINVAL The buffer size matches neither the frame size nor the
+ * picture size the encoder was initialized with, or
+ * encoding has already completed.*/
+extern int th_encode_ycbcr_in(th_enc_ctx *_enc,th_ycbcr_buffer _ycbcr);
+/**Retrieves encoded video data packets.
+ * This should be called repeatedly after each frame is submitted to flush any
+ * encoded packets, until it returns 0.
+ * The encoder will not buffer these packets as subsequent frames are
+ * compressed, so a failure to do so will result in lost video data.
+ * \note Currently the encoder operates in a one-frame-in, one-packet-out
+ * manner.
+ * However, this may be changed in the future.
+ * \param _enc A #th_enc_ctx handle.
+ * \param _last Set this flag to a non-zero value if no more uncompressed
+ * frames will be submitted.
+ * This ensures that a proper EOS flag is set on the last packet.
+ * \param _op An <tt>ogg_packet</tt> structure to fill.
+ * All of the elements of this structure will be set, including a
+ * pointer to the video data.
+ * The memory for the video data is owned by
+ * <tt>libtheoraenc</tt>, and may be invalidated when the next
+ * encoder function is called.
+ * \return A positive value indicates that a video data packet was successfully
+ * produced.
+ * \retval 0 No packet was produced, and no more encoded video data
+ * remains.
+ * \retval TH_EFAULT \a _enc or \a _op was <tt>NULL</tt>.*/
+extern int th_encode_packetout(th_enc_ctx *_enc,int _last,ogg_packet *_op);
+/**Frees an allocated encoder instance.
+ * \param _enc A #th_enc_ctx handle.*/
+extern void th_encode_free(th_enc_ctx *_enc);
+/*@}*/
+/*@}*/
+
+
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif
diff --git a/media/libtheora/lib/apiwrapper.c b/media/libtheora/lib/apiwrapper.c
new file mode 100644
index 000000000..dc959b8d1
--- /dev/null
+++ b/media/libtheora/lib/apiwrapper.c
@@ -0,0 +1,166 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: apiwrapper.c 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include "apiwrapper.h"
+
+
+
+const char *theora_version_string(void){
+ return th_version_string();
+}
+
+ogg_uint32_t theora_version_number(void){
+ return th_version_number();
+}
+
+void theora_info_init(theora_info *_ci){
+ memset(_ci,0,sizeof(*_ci));
+}
+
+void theora_info_clear(theora_info *_ci){
+ th_api_wrapper *api;
+ api=(th_api_wrapper *)_ci->codec_setup;
+ memset(_ci,0,sizeof(*_ci));
+ if(api!=NULL){
+ if(api->clear!=NULL)(*api->clear)(api);
+ _ogg_free(api);
+ }
+}
+
+void theora_clear(theora_state *_th){
+ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/
+ if(_th->internal_decode!=NULL){
+ (*((oc_state_dispatch_vtable *)_th->internal_decode)->clear)(_th);
+ }
+ if(_th->internal_encode!=NULL){
+ (*((oc_state_dispatch_vtable *)_th->internal_encode)->clear)(_th);
+ }
+ if(_th->i!=NULL)theora_info_clear(_th->i);
+ memset(_th,0,sizeof(*_th));
+}
+
+int theora_control(theora_state *_th,int _req,void *_buf,size_t _buf_sz){
+ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/
+ if(_th->internal_decode!=NULL){
+ return (*((oc_state_dispatch_vtable *)_th->internal_decode)->control)(_th,
+ _req,_buf,_buf_sz);
+ }
+ else if(_th->internal_encode!=NULL){
+ return (*((oc_state_dispatch_vtable *)_th->internal_encode)->control)(_th,
+ _req,_buf,_buf_sz);
+ }
+ else return TH_EINVAL;
+}
+
+ogg_int64_t theora_granule_frame(theora_state *_th,ogg_int64_t _gp){
+ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/
+ if(_th->internal_decode!=NULL){
+ return (*((oc_state_dispatch_vtable *)_th->internal_decode)->granule_frame)(
+ _th,_gp);
+ }
+ else if(_th->internal_encode!=NULL){
+ return (*((oc_state_dispatch_vtable *)_th->internal_encode)->granule_frame)(
+ _th,_gp);
+ }
+ else return -1;
+}
+
+double theora_granule_time(theora_state *_th, ogg_int64_t _gp){
+ /*Provide compatibility with mixed encoder and decoder shared lib versions.*/
+ if(_th->internal_decode!=NULL){
+ return (*((oc_state_dispatch_vtable *)_th->internal_decode)->granule_time)(
+ _th,_gp);
+ }
+ else if(_th->internal_encode!=NULL){
+ return (*((oc_state_dispatch_vtable *)_th->internal_encode)->granule_time)(
+ _th,_gp);
+ }
+ else return -1;
+}
+
+void oc_theora_info2th_info(th_info *_info,const theora_info *_ci){
+ _info->version_major=_ci->version_major;
+ _info->version_minor=_ci->version_minor;
+ _info->version_subminor=_ci->version_subminor;
+ _info->frame_width=_ci->width;
+ _info->frame_height=_ci->height;
+ _info->pic_width=_ci->frame_width;
+ _info->pic_height=_ci->frame_height;
+ _info->pic_x=_ci->offset_x;
+ _info->pic_y=_ci->offset_y;
+ _info->fps_numerator=_ci->fps_numerator;
+ _info->fps_denominator=_ci->fps_denominator;
+ _info->aspect_numerator=_ci->aspect_numerator;
+ _info->aspect_denominator=_ci->aspect_denominator;
+ switch(_ci->colorspace){
+ case OC_CS_ITU_REC_470M:_info->colorspace=TH_CS_ITU_REC_470M;break;
+ case OC_CS_ITU_REC_470BG:_info->colorspace=TH_CS_ITU_REC_470BG;break;
+ default:_info->colorspace=TH_CS_UNSPECIFIED;break;
+ }
+ switch(_ci->pixelformat){
+ case OC_PF_420:_info->pixel_fmt=TH_PF_420;break;
+ case OC_PF_422:_info->pixel_fmt=TH_PF_422;break;
+ case OC_PF_444:_info->pixel_fmt=TH_PF_444;break;
+ default:_info->pixel_fmt=TH_PF_RSVD;
+ }
+ _info->target_bitrate=_ci->target_bitrate;
+ _info->quality=_ci->quality;
+ _info->keyframe_granule_shift=_ci->keyframe_frequency_force>0?
+ OC_MINI(31,oc_ilog(_ci->keyframe_frequency_force-1)):0;
+}
+
+int theora_packet_isheader(ogg_packet *_op){
+ return th_packet_isheader(_op);
+}
+
+int theora_packet_iskeyframe(ogg_packet *_op){
+ return th_packet_iskeyframe(_op);
+}
+
+int theora_granule_shift(theora_info *_ci){
+ /*This breaks when keyframe_frequency_force is not positive or is larger than
+ 2**31 (if your int is more than 32 bits), but that's what the original
+ function does.*/
+ return oc_ilog(_ci->keyframe_frequency_force-1);
+}
+
+void theora_comment_init(theora_comment *_tc){
+ th_comment_init((th_comment *)_tc);
+}
+
+char *theora_comment_query(theora_comment *_tc,char *_tag,int _count){
+ return th_comment_query((th_comment *)_tc,_tag,_count);
+}
+
+int theora_comment_query_count(theora_comment *_tc,char *_tag){
+ return th_comment_query_count((th_comment *)_tc,_tag);
+}
+
+void theora_comment_clear(theora_comment *_tc){
+ th_comment_clear((th_comment *)_tc);
+}
+
+void theora_comment_add(theora_comment *_tc,char *_comment){
+ th_comment_add((th_comment *)_tc,_comment);
+}
+
+void theora_comment_add_tag(theora_comment *_tc, char *_tag, char *_value){
+ th_comment_add_tag((th_comment *)_tc,_tag,_value);
+}
diff --git a/media/libtheora/lib/apiwrapper.h b/media/libtheora/lib/apiwrapper.h
new file mode 100644
index 000000000..ff45e0a4d
--- /dev/null
+++ b/media/libtheora/lib/apiwrapper.h
@@ -0,0 +1,54 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: apiwrapper.h 13596 2007-08-23 20:05:38Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_apiwrapper_H)
+# define _apiwrapper_H (1)
+# include <ogg/ogg.h>
+# include <theora/theora.h>
+# include "theora/theoradec.h"
+# include "theora/theoraenc.h"
+# include "state.h"
+
+typedef struct th_api_wrapper th_api_wrapper;
+typedef struct th_api_info th_api_info;
+
+/*Provide an entry point for the codec setup to clear itself in case we ever
+ want to break pieces off into a common base library shared by encoder and
+ decoder.
+ In addition, this makes several other pieces of the API wrapper cleaner.*/
+typedef void (*oc_setup_clear_func)(void *_ts);
+
+/*Generally only one of these pointers will be non-NULL in any given instance.
+ Technically we do not even really need this struct, since we should be able
+ to figure out which one from "context", but doing it this way makes sure we
+ don't flub it up.*/
+struct th_api_wrapper{
+ oc_setup_clear_func clear;
+ th_setup_info *setup;
+ th_dec_ctx *decode;
+ th_enc_ctx *encode;
+};
+
+struct th_api_info{
+ th_api_wrapper api;
+ theora_info info;
+};
+
+
+void oc_theora_info2th_info(th_info *_info,const theora_info *_ci);
+
+#endif
diff --git a/media/libtheora/lib/arm/arm2gnu.pl b/media/libtheora/lib/arm/arm2gnu.pl
new file mode 100644
index 000000000..5831bd81e
--- /dev/null
+++ b/media/libtheora/lib/arm/arm2gnu.pl
@@ -0,0 +1,281 @@
+#!/usr/bin/perl
+
+my $bigend; # little/big endian
+my $nxstack;
+
+$nxstack = 0;
+
+eval 'exec /usr/local/bin/perl -S $0 ${1+"$@"}'
+ if $running_under_some_shell;
+
+while ($ARGV[0] =~ /^-/) {
+ $_ = shift;
+ last if /^--/;
+ if (/^-n/) {
+ $nflag++;
+ next;
+ }
+ die "I don't recognize this switch: $_\\n";
+}
+$printit++ unless $nflag;
+
+$\ = "\n"; # automatically add newline on print
+$n=0;
+
+$thumb = 0; # ARM mode by default, not Thumb.
+
+LINE:
+while (<>) {
+
+ # For ADRLs we need to add a new line after the substituted one.
+ $addPadding = 0;
+
+ # First, we do not dare to touch *anything* inside double quotes, do we?
+ # Second, if you want a dollar character in the string,
+ # insert two of them -- that's how ARM C and assembler treat strings.
+ s/^([A-Za-z_]\w*)[ \t]+DCB[ \t]*\"/$1: .ascii \"/ && do { s/\$\$/\$/g; next };
+ s/\bDCB\b[ \t]*\"/.ascii \"/ && do { s/\$\$/\$/g; next };
+ s/^(\S+)\s+RN\s+(\S+)/$1 .req r$2/ && do { s/\$\$/\$/g; next };
+ # If there's nothing on a line but a comment, don't try to apply any further
+ # substitutions (this is a cheap hack to avoid mucking up the license header)
+ s/^([ \t]*);/$1@/ && do { s/\$\$/\$/g; next };
+ # If substituted -- leave immediately !
+
+ s/@/,:/;
+ s/;/@/;
+ while ( /@.*'/ ) {
+ s/(@.*)'/$1/g;
+ }
+ s/\{FALSE\}/0/g;
+ s/\{TRUE\}/1/g;
+ s/\{(\w\w\w\w+)\}/$1/g;
+ s/\bINCLUDE[ \t]*([^ \t\n]+)/.include \"$1\"/;
+ s/\bGET[ \t]*([^ \t\n]+)/.include \"${ my $x=$1; $x =~ s|\.s|-gnu.S|; \$x }\"/;
+ s/\bIMPORT\b/.extern/;
+ s/\bEXPORT\b/.global/;
+ s/^(\s+)\[/$1IF/;
+ s/^(\s+)\|/$1ELSE/;
+ s/^(\s+)\]/$1ENDIF/;
+ s/IF *:DEF:/ .ifdef/;
+ s/IF *:LNOT: *:DEF:/ .ifndef/;
+ s/ELSE/ .else/;
+ s/ENDIF/ .endif/;
+
+ if( /\bIF\b/ ) {
+ s/\bIF\b/ .if/;
+ s/=/==/;
+ }
+ if ( $n == 2) {
+ s/\$/\\/g;
+ }
+ if ($n == 1) {
+ s/\$//g;
+ s/label//g;
+ $n = 2;
+ }
+ if ( /MACRO/ ) {
+ s/MACRO *\n/.macro/;
+ $n=1;
+ }
+ if ( /\bMEND\b/ ) {
+ s/\bMEND\b/.endm/;
+ $n=0;
+ }
+
+ # ".rdata" doesn't work in 'as' version 2.13.2, as it is ".rodata" there.
+ #
+ if ( /\bAREA\b/ ) {
+ if ( /CODE/ ) {
+ $nxstack = 1;
+ }
+ s/^(.+)CODE(.+)READONLY(.*)/ .text/;
+ s/^(.+)DATA(.+)READONLY(.*)/ .section .rdata\n .align 2/;
+ s/^(.+)\|\|\.data\|\|(.+)/ .data\n .align 2/;
+ s/^(.+)\|\|\.bss\|\|(.+)/ .bss/;
+ }
+
+ s/\|\|\.constdata\$(\d+)\|\|/.L_CONST$1/; # ||.constdata$3||
+ s/\|\|\.bss\$(\d+)\|\|/.L_BSS$1/; # ||.bss$2||
+ s/\|\|\.data\$(\d+)\|\|/.L_DATA$1/; # ||.data$2||
+ s/\|\|([a-zA-Z0-9_]+)\@([a-zA-Z0-9_]+)\|\|/@ $&/;
+ s/^(\s+)\%(\s)/ .space $1/;
+
+ s/\|(.+)\.(\d+)\|/\.$1_$2/; # |L80.123| -> .L80_123
+ s/\bCODE32\b/.code 32/ && do {$thumb = 0};
+ s/\bCODE16\b/.code 16/ && do {$thumb = 1};
+ if (/\bPROC\b/)
+ {
+ print " .thumb_func" if ($thumb);
+ s/\bPROC\b/@ $&/;
+ }
+ s/^(\s*)(S|Q|SH|U|UQ|UH)ASX\b/$1$2ADDSUBX/;
+ s/^(\s*)(S|Q|SH|U|UQ|UH)SAX\b/$1$2SUBADDX/;
+ s/\bENDP\b/@ $&/;
+ s/\bSUBT\b/@ $&/;
+ s/\bDATA\b/@ $&/; # DATA directive is deprecated -- Asm guide, p.7-25
+ s/\bKEEP\b/@ $&/;
+ s/\bEXPORTAS\b/@ $&/;
+ s/\|\|(.)+\bEQU\b/@ $&/;
+ s/\|\|([\w\$]+)\|\|/$1/;
+ s/\bENTRY\b/@ $&/;
+ s/\bASSERT\b/@ $&/;
+ s/\bGBLL\b/@ $&/;
+ s/\bGBLA\b/@ $&/;
+ s/^\W+OPT\b/@ $&/;
+ s/:OR:/|/g;
+ s/:SHL:/<</g;
+ s/:SHR:/>>/g;
+ s/:AND:/&/g;
+ s/:LAND:/&&/g;
+ s/CPSR/cpsr/;
+ s/SPSR/spsr/;
+ s/ALIGN$/.balign 4/;
+ s/ALIGN\s+([0-9x]+)$/.balign $1/;
+ s/psr_cxsf/psr_all/;
+ s/LTORG/.ltorg/;
+ s/^([A-Za-z_]\w*)[ \t]+EQU/ .set $1,/;
+ s/^([A-Za-z_]\w*)[ \t]+SETL/ .set $1,/;
+ s/^([A-Za-z_]\w*)[ \t]+SETA/ .set $1,/;
+ s/^([A-Za-z_]\w*)[ \t]+\*/ .set $1,/;
+
+ # {PC} + 0xdeadfeed --> . + 0xdeadfeed
+ s/\{PC\} \+/ \. +/;
+
+ # Single hex constant on the line !
+ #
+ # >>> NOTE <<<
+ # Double-precision floats in gcc are always mixed-endian, which means
+ # bytes in two words are little-endian, but words are big-endian.
+ # So, 0x0000deadfeed0000 would be stored as 0x0000dead at low address
+ # and 0xfeed0000 at high address.
+ #
+ s/\bDCFD\b[ \t]+0x([a-fA-F0-9]{8})([a-fA-F0-9]{8})/.long 0x$1, 0x$2/;
+ # Only decimal constants on the line, no hex !
+ s/\bDCFD\b[ \t]+([0-9\.\-]+)/.double $1/;
+
+ # Single hex constant on the line !
+# s/\bDCFS\b[ \t]+0x([a-f0-9]{8})([a-f0-9]{8})/.long 0x$1, 0x$2/;
+ # Only decimal constants on the line, no hex !
+# s/\bDCFS\b[ \t]+([0-9\.\-]+)/.double $1/;
+ s/\bDCFS[ \t]+0x/.word 0x/;
+ s/\bDCFS\b/.float/;
+
+ s/^([A-Za-z_]\w*)[ \t]+DCD/$1 .word/;
+ s/\bDCD\b/.word/;
+ s/^([A-Za-z_]\w*)[ \t]+DCW/$1 .short/;
+ s/\bDCW\b/.short/;
+ s/^([A-Za-z_]\w*)[ \t]+DCB/$1 .byte/;
+ s/\bDCB\b/.byte/;
+ s/^([A-Za-z_]\w*)[ \t]+\%/.comm $1,/;
+ s/^[A-Za-z_\.]\w+/$&:/;
+ s/^(\d+)/$1:/;
+ s/\%(\d+)/$1b_or_f/;
+ s/\%[Bb](\d+)/$1b/;
+ s/\%[Ff](\d+)/$1f/;
+ s/\%[Ff][Tt](\d+)/$1f/;
+ s/&([\dA-Fa-f]+)/0x$1/;
+ if ( /\b2_[01]+\b/ ) {
+ s/\b2_([01]+)\b/conv$1&&&&/g;
+ while ( /[01][01][01][01]&&&&/ ) {
+ s/0000&&&&/&&&&0/g;
+ s/0001&&&&/&&&&1/g;
+ s/0010&&&&/&&&&2/g;
+ s/0011&&&&/&&&&3/g;
+ s/0100&&&&/&&&&4/g;
+ s/0101&&&&/&&&&5/g;
+ s/0110&&&&/&&&&6/g;
+ s/0111&&&&/&&&&7/g;
+ s/1000&&&&/&&&&8/g;
+ s/1001&&&&/&&&&9/g;
+ s/1010&&&&/&&&&A/g;
+ s/1011&&&&/&&&&B/g;
+ s/1100&&&&/&&&&C/g;
+ s/1101&&&&/&&&&D/g;
+ s/1110&&&&/&&&&E/g;
+ s/1111&&&&/&&&&F/g;
+ }
+ s/000&&&&/&&&&0/g;
+ s/001&&&&/&&&&1/g;
+ s/010&&&&/&&&&2/g;
+ s/011&&&&/&&&&3/g;
+ s/100&&&&/&&&&4/g;
+ s/101&&&&/&&&&5/g;
+ s/110&&&&/&&&&6/g;
+ s/111&&&&/&&&&7/g;
+ s/00&&&&/&&&&0/g;
+ s/01&&&&/&&&&1/g;
+ s/10&&&&/&&&&2/g;
+ s/11&&&&/&&&&3/g;
+ s/0&&&&/&&&&0/g;
+ s/1&&&&/&&&&1/g;
+ s/conv&&&&/0x/g;
+ }
+
+ if ( /commandline/)
+ {
+ if( /-bigend/)
+ {
+ $bigend=1;
+ }
+ }
+
+ if ( /\bDCDU\b/ )
+ {
+ my $cmd=$_;
+ my $value;
+ my $w1;
+ my $w2;
+ my $w3;
+ my $w4;
+
+ s/\s+DCDU\b/@ $&/;
+
+ $cmd =~ /\bDCDU\b\s+0x(\d+)/;
+ $value = $1;
+ $value =~ /(\w\w)(\w\w)(\w\w)(\w\w)/;
+ $w1 = $1;
+ $w2 = $2;
+ $w3 = $3;
+ $w4 = $4;
+
+ if( $bigend ne "")
+ {
+ # big endian
+
+ print " .byte 0x".$w1;
+ print " .byte 0x".$w2;
+ print " .byte 0x".$w3;
+ print " .byte 0x".$w4;
+ }
+ else
+ {
+ # little endian
+
+ print " .byte 0x".$w4;
+ print " .byte 0x".$w3;
+ print " .byte 0x".$w2;
+ print " .byte 0x".$w1;
+ }
+
+ }
+
+
+ if ( /\badrl\b/i )
+ {
+ s/\badrl\s+(\w+)\s*,\s*(\w+)/ldr $1,=$2/i;
+ $addPadding = 1;
+ }
+ s/\bEND\b/@ END/;
+} continue {
+ printf ("%s", $_) if $printit;
+ if ($addPadding != 0)
+ {
+ printf (" mov r0,r0\n");
+ $addPadding = 0;
+ }
+}
+#If we had a code section, mark that this object doesn't need an executable
+# stack.
+if ($nxstack) {
+ printf (" .section\t.note.GNU-stack,\"\",\%\%progbits\n");
+}
diff --git a/media/libtheora/lib/arm/armbits.h b/media/libtheora/lib/arm/armbits.h
new file mode 100644
index 000000000..1540d7eb5
--- /dev/null
+++ b/media/libtheora/lib/arm/armbits.h
@@ -0,0 +1,32 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86int.h 17344 2010-07-21 01:42:18Z tterribe $
+
+ ********************************************************************/
+#if !defined(_arm_armbits_H)
+# define _arm_armbits_H (1)
+# include "../bitpack.h"
+# include "armcpu.h"
+
+# if defined(OC_ARM_ASM)
+# define oc_pack_read oc_pack_read_arm
+# define oc_pack_read1 oc_pack_read1_arm
+# define oc_huff_token_decode oc_huff_token_decode_arm
+# endif
+
+long oc_pack_read_arm(oc_pack_buf *_b,int _bits);
+int oc_pack_read1_arm(oc_pack_buf *_b);
+int oc_huff_token_decode_arm(oc_pack_buf *_b,const ogg_int16_t *_tree);
+
+#endif
diff --git a/media/libtheora/lib/arm/armbits.s b/media/libtheora/lib/arm/armbits.s
new file mode 100644
index 000000000..0fdb6fdd3
--- /dev/null
+++ b/media/libtheora/lib/arm/armbits.s
@@ -0,0 +1,236 @@
+;********************************************************************
+;* *
+;* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+;* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+;* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+;* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+;* *
+;* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+;* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+;* *
+;********************************************************************
+;
+; function:
+; last mod: $Id: armbits.s 17481 2010-10-03 22:49:42Z tterribe $
+;
+;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
+ ; Explicitly specifying alignment here because some versions of
+ ; gas don't align code correctly. See
+ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
+ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
+ ALIGN
+
+ EXPORT oc_pack_read_arm
+ EXPORT oc_pack_read1_arm
+ EXPORT oc_huff_token_decode_arm
+
+oc_pack_read1_arm PROC
+ ; r0 = oc_pack_buf *_b
+ ADD r12,r0,#8
+ LDMIA r12,{r2,r3} ; r2 = window
+ ; Stall... ; r3 = available
+ ; Stall...
+ SUBS r3,r3,#1 ; r3 = available-1, available<1 => LT
+ BLT oc_pack_read1_refill
+ MOV r0,r2,LSR #31 ; r0 = window>>31
+ MOV r2,r2,LSL #1 ; r2 = window<<=1
+ STMIA r12,{r2,r3} ; window = r2
+ ; available = r3
+ MOV PC,r14
+ ENDP
+
+oc_pack_read_arm PROC
+ ; r0 = oc_pack_buf *_b
+ ; r1 = int _bits
+ ADD r12,r0,#8
+ LDMIA r12,{r2,r3} ; r2 = window
+ ; Stall... ; r3 = available
+ ; Stall...
+ SUBS r3,r3,r1 ; r3 = available-_bits, available<_bits => LT
+ BLT oc_pack_read_refill
+ RSB r0,r1,#32 ; r0 = 32-_bits
+ MOV r0,r2,LSR r0 ; r0 = window>>32-_bits
+ MOV r2,r2,LSL r1 ; r2 = window<<=_bits
+ STMIA r12,{r2,r3} ; window = r2
+ ; available = r3
+ MOV PC,r14
+
+; We need to refill window.
+oc_pack_read1_refill
+ MOV r1,#1
+oc_pack_read_refill
+ STMFD r13!,{r10,r11,r14}
+ LDMIA r0,{r10,r11} ; r10 = stop
+ ; r11 = ptr
+ RSB r0,r1,#32 ; r0 = 32-_bits
+ RSB r3,r3,r0 ; r3 = 32-available
+; We can use unsigned compares for both the pointers and for available
+; (allowing us to chain condition codes) because available will never be
+; larger than 32 (or we wouldn't be here), and thus 32-available will never be
+; negative.
+ CMP r10,r11 ; ptr<stop => HI
+ CMPHI r3,#7 ; available<=24 => HI
+ LDRHIB r14,[r11],#1 ; r14 = *ptr++
+ SUBHI r3,#8 ; available += 8
+ ; (HI) Stall...
+ ORRHI r2,r14,LSL r3 ; r2 = window|=r14<<32-available
+ CMPHI r10,r11 ; ptr<stop => HI
+ CMPHI r3,#7 ; available<=24 => HI
+ LDRHIB r14,[r11],#1 ; r14 = *ptr++
+ SUBHI r3,#8 ; available += 8
+ ; (HI) Stall...
+ ORRHI r2,r14,LSL r3 ; r2 = window|=r14<<32-available
+ CMPHI r10,r11 ; ptr<stop => HI
+ CMPHI r3,#7 ; available<=24 => HI
+ LDRHIB r14,[r11],#1 ; r14 = *ptr++
+ SUBHI r3,#8 ; available += 8
+ ; (HI) Stall...
+ ORRHI r2,r14,LSL r3 ; r2 = window|=r14<<32-available
+ CMPHI r10,r11 ; ptr<stop => HI
+ CMPHI r3,#7 ; available<=24 => HI
+ LDRHIB r14,[r11],#1 ; r14 = *ptr++
+ SUBHI r3,#8 ; available += 8
+ ; (HI) Stall...
+ ORRHI r2,r14,LSL r3 ; r2 = window|=r14<<32-available
+ SUBS r3,r0,r3 ; r3 = available-=_bits, available<bits => GT
+ BLT oc_pack_read_refill_last
+ MOV r0,r2,LSR r0 ; r0 = window>>32-_bits
+ MOV r2,r2,LSL r1 ; r2 = window<<=_bits
+ STR r11,[r12,#-4] ; ptr = r11
+ STMIA r12,{r2,r3} ; window = r2
+ ; available = r3
+ LDMFD r13!,{r10,r11,PC}
+
+; Either we wanted to read more than 24 bits and didn't have enough room to
+; stuff the last byte into the window, or we hit the end of the packet.
+oc_pack_read_refill_last
+ CMP r11,r10 ; ptr<stop => LO
+; If we didn't hit the end of the packet, then pull enough of the next byte to
+; to fill up the window.
+ LDRLOB r14,[r11] ; (LO) r14 = *ptr
+; Otherwise, set the EOF flag and pretend we have lots of available bits.
+ MOVHS r14,#1 ; (HS) r14 = 1
+ ADDLO r10,r3,r1 ; (LO) r10 = available
+ STRHS r14,[r12,#8] ; (HS) eof = 1
+ ANDLO r10,r10,#7 ; (LO) r10 = available&7
+ MOVHS r3,#1<<30 ; (HS) available = OC_LOTS_OF_BITS
+ ORRLO r2,r14,LSL r10 ; (LO) r2 = window|=*ptr>>(available&7)
+ MOV r0,r2,LSR r0 ; r0 = window>>32-_bits
+ MOV r2,r2,LSL r1 ; r2 = window<<=_bits
+ STR r11,[r12,#-4] ; ptr = r11
+ STMIA r12,{r2,r3} ; window = r2
+ ; available = r3
+ LDMFD r13!,{r10,r11,PC}
+ ENDP
+
+
+
+oc_huff_token_decode_arm PROC
+ ; r0 = oc_pack_buf *_b
+ ; r1 = const ogg_int16_t *_tree
+ STMFD r13!,{r4,r5,r10,r14}
+ LDRSH r10,[r1] ; r10 = n=_tree[0]
+ LDMIA r0,{r2-r5} ; r2 = stop
+ ; Stall... ; r3 = ptr
+ ; Stall... ; r4 = window
+ ; r5 = available
+ CMP r10,r5 ; n>available => GT
+ BGT oc_huff_token_decode_refill0
+ RSB r14,r10,#32 ; r14 = 32-n
+ MOV r14,r4,LSR r14 ; r14 = bits=window>>32-n
+ ADD r14,r1,r14,LSL #1 ; r14 = _tree+bits
+ LDRSH r12,[r14,#2] ; r12 = node=_tree[1+bits]
+ ; Stall...
+ ; Stall...
+ RSBS r14,r12,#0 ; r14 = -node, node>0 => MI
+ BMI oc_huff_token_decode_continue
+ MOV r10,r14,LSR #8 ; r10 = n=node>>8
+ MOV r4,r4,LSL r10 ; r4 = window<<=n
+ SUB r5,r10 ; r5 = available-=n
+ STMIB r0,{r3-r5} ; ptr = r3
+ ; window = r4
+ ; available = r5
+ AND r0,r14,#255 ; r0 = node&255
+ LDMFD r13!,{r4,r5,r10,pc}
+
+; The first tree node wasn't enough to reach a leaf, read another
+oc_huff_token_decode_continue
+ ADD r12,r1,r12,LSL #1 ; r12 = _tree+node
+ MOV r4,r4,LSL r10 ; r4 = window<<=n
+ SUB r5,r5,r10 ; r5 = available-=n
+ LDRSH r10,[r12],#2 ; r10 = n=_tree[node]
+ ; Stall... ; r12 = _tree+node+1
+ ; Stall...
+ CMP r10,r5 ; n>available => GT
+ BGT oc_huff_token_decode_refill
+ RSB r14,r10,#32 ; r14 = 32-n
+ MOV r14,r4,LSR r14 ; r14 = bits=window>>32-n
+ ADD r12,r12,r14 ;
+ LDRSH r12,[r12,r14] ; r12 = node=_tree[node+1+bits]
+ ; Stall...
+ ; Stall...
+ RSBS r14,r12,#0 ; r14 = -node, node>0 => MI
+ BMI oc_huff_token_decode_continue
+ MOV r10,r14,LSR #8 ; r10 = n=node>>8
+ MOV r4,r4,LSL r10 ; r4 = window<<=n
+ SUB r5,r10 ; r5 = available-=n
+ STMIB r0,{r3-r5} ; ptr = r3
+ ; window = r4
+ ; available = r5
+ AND r0,r14,#255 ; r0 = node&255
+ LDMFD r13!,{r4,r5,r10,pc}
+
+oc_huff_token_decode_refill0
+ ADD r12,r1,#2 ; r12 = _tree+1
+oc_huff_token_decode_refill
+; We can't possibly need more than 15 bits, so available must be <= 15.
+; Therefore we can load at least two bytes without checking it.
+ CMP r2,r3 ; ptr<stop => HI
+ LDRHIB r14,[r3],#1 ; r14 = *ptr++
+ RSBHI r5,r5,#24 ; (HI) available = 32-(available+=8)
+ RSBLS r5,r5,#32 ; (LS) r5 = 32-available
+ ORRHI r4,r14,LSL r5 ; r4 = window|=r14<<32-available
+ CMPHI r2,r3 ; ptr<stop => HI
+ LDRHIB r14,[r3],#1 ; r14 = *ptr++
+ SUBHI r5,#8 ; available += 8
+ ; (HI) Stall...
+ ORRHI r4,r14,LSL r5 ; r4 = window|=r14<<32-available
+; We can use unsigned compares for both the pointers and for available
+; (allowing us to chain condition codes) because available will never be
+; larger than 32 (or we wouldn't be here), and thus 32-available will never be
+; negative.
+ CMPHI r2,r3 ; ptr<stop => HI
+ CMPHI r5,#7 ; available<=24 => HI
+ LDRHIB r14,[r3],#1 ; r14 = *ptr++
+ SUBHI r5,#8 ; available += 8
+ ; (HI) Stall...
+ ORRHI r4,r14,LSL r5 ; r4 = window|=r14<<32-available
+ CMP r2,r3 ; ptr<stop => HI
+ MOVLS r5,#-1<<30 ; (LS) available = OC_LOTS_OF_BITS+32
+ CMPHI r5,#7 ; (HI) available<=24 => HI
+ LDRHIB r14,[r3],#1 ; (HI) r14 = *ptr++
+ SUBHI r5,#8 ; (HI) available += 8
+ ; (HI) Stall...
+ ORRHI r4,r14,LSL r5 ; (HI) r4 = window|=r14<<32-available
+ RSB r14,r10,#32 ; r14 = 32-n
+ MOV r14,r4,LSR r14 ; r14 = bits=window>>32-n
+ ADD r12,r12,r14 ;
+ LDRSH r12,[r12,r14] ; r12 = node=_tree[node+1+bits]
+ RSB r5,r5,#32 ; r5 = available
+ ; Stall...
+ RSBS r14,r12,#0 ; r14 = -node, node>0 => MI
+ BMI oc_huff_token_decode_continue
+ MOV r10,r14,LSR #8 ; r10 = n=node>>8
+ MOV r4,r4,LSL r10 ; r4 = window<<=n
+ SUB r5,r10 ; r5 = available-=n
+ STMIB r0,{r3-r5} ; ptr = r3
+ ; window = r4
+ ; available = r5
+ AND r0,r14,#255 ; r0 = node&255
+ LDMFD r13!,{r4,r5,r10,pc}
+ ENDP
+
+ END
diff --git a/media/libtheora/lib/arm/armcpu.c b/media/libtheora/lib/arm/armcpu.c
new file mode 100644
index 000000000..8b0f9a857
--- /dev/null
+++ b/media/libtheora/lib/arm/armcpu.c
@@ -0,0 +1,116 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ CPU capability detection for ARM processors.
+
+ function:
+ last mod: $Id: cpu.c 17344 2010-07-21 01:42:18Z tterribe $
+
+ ********************************************************************/
+
+#include "armcpu.h"
+
+#if !defined(OC_ARM_ASM)|| \
+ !defined(OC_ARM_ASM_EDSP)&&!defined(OC_ARM_ASM_ARMV6)&& \
+ !defined(OC_ARM_ASM_NEON)
+ogg_uint32_t oc_cpu_flags_get(void){
+ return 0;
+}
+
+#elif defined(_MSC_VER)
+/*For GetExceptionCode() and EXCEPTION_ILLEGAL_INSTRUCTION.*/
+# define WIN32_LEAN_AND_MEAN
+# define WIN32_EXTRA_LEAN
+# include <windows.h>
+
+ogg_uint32_t oc_cpu_flags_get(void){
+ ogg_uint32_t flags;
+ flags=0;
+ /*MSVC has no inline __asm support for ARM, but it does let you __emit
+ instructions via their assembled hex code.
+ All of these instructions should be essentially nops.*/
+# if defined(OC_ARM_ASM_EDSP)
+ __try{
+ /*PLD [r13]*/
+ __emit(0xF5DDF000);
+ flags|=OC_CPU_ARM_EDSP;
+ }
+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
+ /*Ignore exception.*/
+ }
+# if defined(OC_ARM_ASM_MEDIA)
+ __try{
+ /*SHADD8 r3,r3,r3*/
+ __emit(0xE6333F93);
+ flags|=OC_CPU_ARM_MEDIA;
+ }
+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
+ /*Ignore exception.*/
+ }
+# if defined(OC_ARM_ASM_NEON)
+ __try{
+ /*VORR q0,q0,q0*/
+ __emit(0xF2200150);
+ flags|=OC_CPU_ARM_NEON;
+ }
+ __except(GetExceptionCode()==EXCEPTION_ILLEGAL_INSTRUCTION){
+ /*Ignore exception.*/
+ }
+# endif
+# endif
+# endif
+ return flags;
+}
+
+#elif defined(__linux__)
+# include <stdio.h>
+# include <stdlib.h>
+# include <string.h>
+
+ogg_uint32_t oc_cpu_flags_get(void){
+ ogg_uint32_t flags;
+ FILE *fin;
+ flags=0;
+ /*Reading /proc/self/auxv would be easier, but that doesn't work reliably on
+ Android.
+ This also means that detection will fail in Scratchbox.*/
+ fin=fopen("/proc/cpuinfo","r");
+ if(fin!=NULL){
+ /*512 should be enough for anybody (it's even enough for all the flags that
+ x86 has accumulated... so far).*/
+ char buf[512];
+ while(fgets(buf,511,fin)!=NULL){
+ if(memcmp(buf,"Features",8)==0){
+ char *p;
+ p=strstr(buf," edsp");
+ if(p!=NULL&&(p[5]==' '||p[5]=='\n'))flags|=OC_CPU_ARM_EDSP;
+ p=strstr(buf," neon");
+ if(p!=NULL&&(p[5]==' '||p[5]=='\n'))flags|=OC_CPU_ARM_NEON;
+ }
+ if(memcmp(buf,"CPU architecture:",17)==0){
+ int version;
+ version=atoi(buf+17);
+ if(version>=6)flags|=OC_CPU_ARM_MEDIA;
+ }
+ }
+ fclose(fin);
+ }
+ return flags;
+}
+
+#else
+/*The feature registers which can tell us what the processor supports are
+ accessible in priveleged modes only, so we can't have a general user-space
+ detection method like on x86.*/
+# error "Configured to use ARM asm but no CPU detection method available for " \
+ "your platform. Reconfigure with --disable-asm (or send patches)."
+#endif
diff --git a/media/libtheora/lib/arm/armcpu.h b/media/libtheora/lib/arm/armcpu.h
new file mode 100644
index 000000000..18dd95821
--- /dev/null
+++ b/media/libtheora/lib/arm/armcpu.h
@@ -0,0 +1,29 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+ function:
+ last mod: $Id: cpu.h 17344 2010-07-21 01:42:18Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_arm_armcpu_H)
+# define _arm_armcpu_H (1)
+#include "../internal.h"
+
+/*"Parallel instructions" from ARM v6 and above.*/
+#define OC_CPU_ARM_MEDIA (1<<24)
+/*Flags chosen to match arch/arm/include/asm/hwcap.h in the Linux kernel.*/
+#define OC_CPU_ARM_EDSP (1<<7)
+#define OC_CPU_ARM_NEON (1<<12)
+
+ogg_uint32_t oc_cpu_flags_get(void);
+
+#endif
diff --git a/media/libtheora/lib/arm/armfrag.s b/media/libtheora/lib/arm/armfrag.s
new file mode 100644
index 000000000..e20579eee
--- /dev/null
+++ b/media/libtheora/lib/arm/armfrag.s
@@ -0,0 +1,662 @@
+;********************************************************************
+;* *
+;* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+;* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+;* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+;* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+;* *
+;* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+;* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+;* *
+;********************************************************************
+; Original implementation:
+; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+; last mod: $Id: armfrag.s 17481 2010-10-03 22:49:42Z tterribe $
+;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
+ ; Explicitly specifying alignment here because some versions of
+ ; gas don't align code correctly. See
+ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
+ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
+ ALIGN
+
+ GET armopts.s
+
+; Vanilla ARM v4 versions
+ EXPORT oc_frag_copy_list_arm
+ EXPORT oc_frag_recon_intra_arm
+ EXPORT oc_frag_recon_inter_arm
+ EXPORT oc_frag_recon_inter2_arm
+
+oc_frag_copy_list_arm PROC
+ ; r0 = _dst_frame
+ ; r1 = _src_frame
+ ; r2 = _ystride
+ ; r3 = _fragis
+ ; <> = _nfragis
+ ; <> = _frag_buf_offs
+ LDR r12,[r13] ; r12 = _nfragis
+ STMFD r13!,{r4-r6,r11,r14}
+ SUBS r12, r12, #1
+ LDR r4,[r3],#4 ; r4 = _fragis[fragii]
+ LDRGE r14,[r13,#4*6] ; r14 = _frag_buf_offs
+ BLT ofcl_arm_end
+ SUB r2, r2, #4
+ofcl_arm_lp
+ LDR r11,[r14,r4,LSL #2] ; r11 = _frag_buf_offs[_fragis[fragii]]
+ SUBS r12, r12, #1
+ ; Stall (on XScale)
+ ADD r4, r1, r11 ; r4 = _src_frame+frag_buf_off
+ LDR r6, [r4], #4
+ ADD r11,r0, r11 ; r11 = _dst_frame+frag_buf_off
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4], r2
+ STR r6, [r11],#4
+ LDR r6, [r4], #4
+ STR r5, [r11],r2
+ LDR r5, [r4]
+ LDRGE r4,[r3],#4 ; r4 = _fragis[fragii]
+ STR r6, [r11],#4
+ STR r5, [r11]
+ BGE ofcl_arm_lp
+ofcl_arm_end
+ LDMFD r13!,{r4-r6,r11,PC}
+oc_frag_recon_intra_arm
+ ; r0 = unsigned char *_dst
+ ; r1 = int _ystride
+ ; r2 = const ogg_int16_t _residue[64]
+ STMFD r13!,{r4,r5,r14}
+ MOV r14,#8
+ MOV r5, #255
+ SUB r1, r1, #7
+ofrintra_lp_arm
+ LDRSH r3, [r2], #2
+ LDRSH r4, [r2], #2
+ LDRSH r12,[r2], #2
+ ADDS r3, r3, #128
+ CMPGT r5, r3
+ EORLT r3, r5, r3, ASR #32
+ STRB r3, [r0], #1
+ ADDS r4, r4, #128
+ CMPGT r5, r4
+ EORLT r4, r5, r4, ASR #32
+ LDRSH r3, [r2], #2
+ STRB r4, [r0], #1
+ ADDS r12,r12,#128
+ CMPGT r5, r12
+ EORLT r12,r5, r12,ASR #32
+ LDRSH r4, [r2], #2
+ STRB r12,[r0], #1
+ ADDS r3, r3, #128
+ CMPGT r5, r3
+ EORLT r3, r5, r3, ASR #32
+ LDRSH r12,[r2], #2
+ STRB r3, [r0], #1
+ ADDS r4, r4, #128
+ CMPGT r5, r4
+ EORLT r4, r5, r4, ASR #32
+ LDRSH r3, [r2], #2
+ STRB r4, [r0], #1
+ ADDS r12,r12,#128
+ CMPGT r5, r12
+ EORLT r12,r5, r12,ASR #32
+ LDRSH r4, [r2], #2
+ STRB r12,[r0], #1
+ ADDS r3, r3, #128
+ CMPGT r5, r3
+ EORLT r3, r5, r3, ASR #32
+ STRB r3, [r0], #1
+ ADDS r4, r4, #128
+ CMPGT r5, r4
+ EORLT r4, r5, r4, ASR #32
+ STRB r4, [r0], r1
+ SUBS r14,r14,#1
+ BGT ofrintra_lp_arm
+ LDMFD r13!,{r4,r5,PC}
+ ENDP
+
+oc_frag_recon_inter_arm PROC
+ ; r0 = unsigned char *dst
+ ; r1 = const unsigned char *src
+ ; r2 = int ystride
+ ; r3 = const ogg_int16_t residue[64]
+ STMFD r13!,{r5,r9-r11,r14}
+ MOV r9, #8
+ MOV r5, #255
+ SUB r2, r2, #7
+ofrinter_lp_arm
+ LDRSH r12,[r3], #2
+ LDRB r14,[r1], #1
+ LDRSH r11,[r3], #2
+ LDRB r10,[r1], #1
+ ADDS r12,r12,r14
+ CMPGT r5, r12
+ EORLT r12,r5, r12,ASR #32
+ STRB r12,[r0], #1
+ ADDS r11,r11,r10
+ CMPGT r5, r11
+ LDRSH r12,[r3], #2
+ LDRB r14,[r1], #1
+ EORLT r11,r5, r11,ASR #32
+ STRB r11,[r0], #1
+ ADDS r12,r12,r14
+ CMPGT r5, r12
+ LDRSH r11,[r3], #2
+ LDRB r10,[r1], #1
+ EORLT r12,r5, r12,ASR #32
+ STRB r12,[r0], #1
+ ADDS r11,r11,r10
+ CMPGT r5, r11
+ LDRSH r12,[r3], #2
+ LDRB r14,[r1], #1
+ EORLT r11,r5, r11,ASR #32
+ STRB r11,[r0], #1
+ ADDS r12,r12,r14
+ CMPGT r5, r12
+ LDRSH r11,[r3], #2
+ LDRB r10,[r1], #1
+ EORLT r12,r5, r12,ASR #32
+ STRB r12,[r0], #1
+ ADDS r11,r11,r10
+ CMPGT r5, r11
+ LDRSH r12,[r3], #2
+ LDRB r14,[r1], #1
+ EORLT r11,r5, r11,ASR #32
+ STRB r11,[r0], #1
+ ADDS r12,r12,r14
+ CMPGT r5, r12
+ LDRSH r11,[r3], #2
+ LDRB r10,[r1], r2
+ EORLT r12,r5, r12,ASR #32
+ STRB r12,[r0], #1
+ ADDS r11,r11,r10
+ CMPGT r5, r11
+ EORLT r11,r5, r11,ASR #32
+ STRB r11,[r0], r2
+ SUBS r9, r9, #1
+ BGT ofrinter_lp_arm
+ LDMFD r13!,{r5,r9-r11,PC}
+ ENDP
+
+oc_frag_recon_inter2_arm PROC
+ ; r0 = unsigned char *dst
+ ; r1 = const unsigned char *src1
+ ; r2 = const unsigned char *src2
+ ; r3 = int ystride
+ LDR r12,[r13]
+ ; r12= const ogg_int16_t residue[64]
+ STMFD r13!,{r4-r8,r14}
+ MOV r14,#8
+ MOV r8, #255
+ SUB r3, r3, #7
+ofrinter2_lp_arm
+ LDRB r5, [r1], #1
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ LDRB r7, [r1], #1
+ ADD r5, r5, r6
+ ADDS r5, r4, r5, LSR #1
+ CMPGT r8, r5
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ EORLT r5, r8, r5, ASR #32
+ STRB r5, [r0], #1
+ ADD r7, r7, r6
+ ADDS r7, r4, r7, LSR #1
+ CMPGT r8, r7
+ LDRB r5, [r1], #1
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ EORLT r7, r8, r7, ASR #32
+ STRB r7, [r0], #1
+ ADD r5, r5, r6
+ ADDS r5, r4, r5, LSR #1
+ CMPGT r8, r5
+ LDRB r7, [r1], #1
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ EORLT r5, r8, r5, ASR #32
+ STRB r5, [r0], #1
+ ADD r7, r7, r6
+ ADDS r7, r4, r7, LSR #1
+ CMPGT r8, r7
+ LDRB r5, [r1], #1
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ EORLT r7, r8, r7, ASR #32
+ STRB r7, [r0], #1
+ ADD r5, r5, r6
+ ADDS r5, r4, r5, LSR #1
+ CMPGT r8, r5
+ LDRB r7, [r1], #1
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ EORLT r5, r8, r5, ASR #32
+ STRB r5, [r0], #1
+ ADD r7, r7, r6
+ ADDS r7, r4, r7, LSR #1
+ CMPGT r8, r7
+ LDRB r5, [r1], #1
+ LDRB r6, [r2], #1
+ LDRSH r4, [r12],#2
+ EORLT r7, r8, r7, ASR #32
+ STRB r7, [r0], #1
+ ADD r5, r5, r6
+ ADDS r5, r4, r5, LSR #1
+ CMPGT r8, r5
+ LDRB r7, [r1], r3
+ LDRB r6, [r2], r3
+ LDRSH r4, [r12],#2
+ EORLT r5, r8, r5, ASR #32
+ STRB r5, [r0], #1
+ ADD r7, r7, r6
+ ADDS r7, r4, r7, LSR #1
+ CMPGT r8, r7
+ EORLT r7, r8, r7, ASR #32
+ STRB r7, [r0], r3
+ SUBS r14,r14,#1
+ BGT ofrinter2_lp_arm
+ LDMFD r13!,{r4-r8,PC}
+ ENDP
+
+ [ OC_ARM_ASM_EDSP
+ EXPORT oc_frag_copy_list_edsp
+
+oc_frag_copy_list_edsp PROC
+ ; r0 = _dst_frame
+ ; r1 = _src_frame
+ ; r2 = _ystride
+ ; r3 = _fragis
+ ; <> = _nfragis
+ ; <> = _frag_buf_offs
+ LDR r12,[r13] ; r12 = _nfragis
+ STMFD r13!,{r4-r11,r14}
+ SUBS r12, r12, #1
+ LDRGE r5, [r3],#4 ; r5 = _fragis[fragii]
+ LDRGE r14,[r13,#4*10] ; r14 = _frag_buf_offs
+ BLT ofcl_edsp_end
+ofcl_edsp_lp
+ MOV r4, r1
+ LDR r5, [r14,r5, LSL #2] ; r5 = _frag_buf_offs[_fragis[fragii]]
+ SUBS r12, r12, #1
+ ; Stall (on XScale)
+ LDRD r6, [r4, r5]! ; r4 = _src_frame+frag_buf_off
+ LDRD r8, [r4, r2]!
+ ; Stall
+ STRD r6, [r5, r0]! ; r5 = _dst_frame+frag_buf_off
+ STRD r8, [r5, r2]!
+ ; Stall
+ LDRD r6, [r4, r2]! ; On Xscale at least, doing 3 consecutive
+ LDRD r8, [r4, r2]! ; loads causes a stall, but that's no worse
+ LDRD r10,[r4, r2]! ; than us only doing 2, and having to do
+ ; another pair of LDRD/STRD later on.
+ ; Stall
+ STRD r6, [r5, r2]!
+ STRD r8, [r5, r2]!
+ STRD r10,[r5, r2]!
+ LDRD r6, [r4, r2]!
+ LDRD r8, [r4, r2]!
+ LDRD r10,[r4, r2]!
+ STRD r6, [r5, r2]!
+ STRD r8, [r5, r2]!
+ STRD r10,[r5, r2]!
+ LDRGE r5, [r3],#4 ; r5 = _fragis[fragii]
+ BGE ofcl_edsp_lp
+ofcl_edsp_end
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+ ]
+
+ [ OC_ARM_ASM_MEDIA
+ EXPORT oc_frag_recon_intra_v6
+ EXPORT oc_frag_recon_inter_v6
+ EXPORT oc_frag_recon_inter2_v6
+
+oc_frag_recon_intra_v6 PROC
+ ; r0 = unsigned char *_dst
+ ; r1 = int _ystride
+ ; r2 = const ogg_int16_t _residue[64]
+ STMFD r13!,{r4-r6,r14}
+ MOV r14,#8
+ MOV r12,r2
+ LDR r6, =0x00800080
+ofrintra_v6_lp
+ LDRD r2, [r12],#8 ; r2 = 11110000 r3 = 33332222
+ LDRD r4, [r12],#8 ; r4 = 55554444 r5 = 77776666
+ SUBS r14,r14,#1
+ QADD16 r2, r2, r6
+ QADD16 r3, r3, r6
+ QADD16 r4, r4, r6
+ QADD16 r5, r5, r6
+ USAT16 r2, #8, r2 ; r2 = __11__00
+ USAT16 r3, #8, r3 ; r3 = __33__22
+ USAT16 r4, #8, r4 ; r4 = __55__44
+ USAT16 r5, #8, r5 ; r5 = __77__66
+ ORR r2, r2, r2, LSR #8 ; r2 = __111100
+ ORR r3, r3, r3, LSR #8 ; r3 = __333322
+ ORR r4, r4, r4, LSR #8 ; r4 = __555544
+ ORR r5, r5, r5, LSR #8 ; r5 = __777766
+ PKHBT r2, r2, r3, LSL #16 ; r2 = 33221100
+ PKHBT r3, r4, r5, LSL #16 ; r3 = 77665544
+ STRD r2, [r0], r1
+ BGT ofrintra_v6_lp
+ LDMFD r13!,{r4-r6,PC}
+ ENDP
+
+oc_frag_recon_inter_v6 PROC
+ ; r0 = unsigned char *_dst
+ ; r1 = const unsigned char *_src
+ ; r2 = int _ystride
+ ; r3 = const ogg_int16_t _residue[64]
+ STMFD r13!,{r4-r7,r14}
+ MOV r14,#8
+ofrinter_v6_lp
+ LDRD r6, [r3], #8 ; r6 = 11110000 r7 = 33332222
+ SUBS r14,r14,#1
+ [ OC_ARM_CAN_UNALIGN_LDRD
+ LDRD r4, [r1], r2 ; Unaligned ; r4 = 33221100 r5 = 77665544
+ |
+ LDR r5, [r1, #4]
+ LDR r4, [r1], r2
+ ]
+ PKHBT r12,r6, r7, LSL #16 ; r12= 22220000
+ PKHTB r7, r7, r6, ASR #16 ; r7 = 33331111
+ UXTB16 r6,r4 ; r6 = __22__00
+ UXTB16 r4,r4, ROR #8 ; r4 = __33__11
+ QADD16 r12,r12,r6 ; r12= xx22xx00
+ QADD16 r4, r7, r4 ; r4 = xx33xx11
+ LDRD r6, [r3], #8 ; r6 = 55554444 r7 = 77776666
+ USAT16 r4, #8, r4 ; r4 = __33__11
+ USAT16 r12,#8,r12 ; r12= __22__00
+ ORR r4, r12,r4, LSL #8 ; r4 = 33221100
+ PKHBT r12,r6, r7, LSL #16 ; r12= 66664444
+ PKHTB r7, r7, r6, ASR #16 ; r7 = 77775555
+ UXTB16 r6,r5 ; r6 = __66__44
+ UXTB16 r5,r5, ROR #8 ; r5 = __77__55
+ QADD16 r12,r12,r6 ; r12= xx66xx44
+ QADD16 r5, r7, r5 ; r5 = xx77xx55
+ USAT16 r12,#8, r12 ; r12= __66__44
+ USAT16 r5, #8, r5 ; r4 = __77__55
+ ORR r5, r12,r5, LSL #8 ; r5 = 33221100
+ STRD r4, [r0], r2
+ BGT ofrinter_v6_lp
+ LDMFD r13!,{r4-r7,PC}
+ ENDP
+
+oc_frag_recon_inter2_v6 PROC
+ ; r0 = unsigned char *_dst
+ ; r1 = const unsigned char *_src1
+ ; r2 = const unsigned char *_src2
+ ; r3 = int _ystride
+ LDR r12,[r13]
+ ; r12= const ogg_int16_t _residue[64]
+ STMFD r13!,{r4-r9,r14}
+ MOV r14,#8
+ofrinter2_v6_lp
+ LDRD r6, [r12,#8] ; r6 = 55554444 r7 = 77776666
+ SUBS r14,r14,#1
+ LDR r4, [r1, #4] ; Unaligned ; r4 = src1[1] = 77665544
+ LDR r5, [r2, #4] ; Unaligned ; r5 = src2[1] = 77665544
+ PKHBT r8, r6, r7, LSL #16 ; r8 = 66664444
+ PKHTB r9, r7, r6, ASR #16 ; r9 = 77775555
+ UHADD8 r4, r4, r5 ; r4 = (src1[7,6,5,4] + src2[7,6,5,4])>>1
+ UXTB16 r5, r4 ; r5 = __66__44
+ UXTB16 r4, r4, ROR #8 ; r4 = __77__55
+ QADD16 r8, r8, r5 ; r8 = xx66xx44
+ QADD16 r9, r9, r4 ; r9 = xx77xx55
+ LDRD r6,[r12],#16 ; r6 = 33332222 r7 = 11110000
+ USAT16 r8, #8, r8 ; r8 = __66__44
+ LDR r4, [r1], r3 ; Unaligned ; r4 = src1[0] = 33221100
+ USAT16 r9, #8, r9 ; r9 = __77__55
+ LDR r5, [r2], r3 ; Unaligned ; r5 = src2[0] = 33221100
+ ORR r9, r8, r9, LSL #8 ; r9 = 77665544
+ PKHBT r8, r6, r7, LSL #16 ; r8 = 22220000
+ UHADD8 r4, r4, r5 ; r4 = (src1[3,2,1,0] + src2[3,2,1,0])>>1
+ PKHTB r7, r7, r6, ASR #16 ; r7 = 33331111
+ UXTB16 r5, r4 ; r5 = __22__00
+ UXTB16 r4, r4, ROR #8 ; r4 = __33__11
+ QADD16 r8, r8, r5 ; r8 = xx22xx00
+ QADD16 r7, r7, r4 ; r7 = xx33xx11
+ USAT16 r8, #8, r8 ; r8 = __22__00
+ USAT16 r7, #8, r7 ; r7 = __33__11
+ ORR r8, r8, r7, LSL #8 ; r8 = 33221100
+ STRD r8, [r0], r3
+ BGT ofrinter2_v6_lp
+ LDMFD r13!,{r4-r9,PC}
+ ENDP
+ ]
+
+ [ OC_ARM_ASM_NEON
+ EXPORT oc_frag_copy_list_neon
+ EXPORT oc_frag_recon_intra_neon
+ EXPORT oc_frag_recon_inter_neon
+ EXPORT oc_frag_recon_inter2_neon
+
+oc_frag_copy_list_neon PROC
+ ; r0 = _dst_frame
+ ; r1 = _src_frame
+ ; r2 = _ystride
+ ; r3 = _fragis
+ ; <> = _nfragis
+ ; <> = _frag_buf_offs
+ LDR r12,[r13] ; r12 = _nfragis
+ STMFD r13!,{r4-r7,r14}
+ CMP r12, #1
+ LDRGE r6, [r3] ; r6 = _fragis[fragii]
+ LDRGE r14,[r13,#4*6] ; r14 = _frag_buf_offs
+ BLT ofcl_neon_end
+ ; Stall (2 on Xscale)
+ LDR r6, [r14,r6, LSL #2] ; r6 = _frag_buf_offs[_fragis[fragii]]
+ ; Stall (on XScale)
+ MOV r7, r6 ; Guarantee PLD points somewhere valid.
+ofcl_neon_lp
+ ADD r4, r1, r6
+ VLD1.64 {D0}, [r4@64], r2
+ ADD r5, r0, r6
+ VLD1.64 {D1}, [r4@64], r2
+ SUBS r12, r12, #1
+ VLD1.64 {D2}, [r4@64], r2
+ LDRGT r6, [r3,#4]! ; r6 = _fragis[fragii]
+ VLD1.64 {D3}, [r4@64], r2
+ LDRGT r6, [r14,r6, LSL #2] ; r6 = _frag_buf_offs[_fragis[fragii]]
+ VLD1.64 {D4}, [r4@64], r2
+ ADDGT r7, r1, r6
+ VLD1.64 {D5}, [r4@64], r2
+ PLD [r7]
+ VLD1.64 {D6}, [r4@64], r2
+ PLD [r7, r2]
+ VLD1.64 {D7}, [r4@64]
+ PLD [r7, r2, LSL #1]
+ VST1.64 {D0}, [r5@64], r2
+ ADDGT r7, r7, r2, LSL #2
+ VST1.64 {D1}, [r5@64], r2
+ PLD [r7, -r2]
+ VST1.64 {D2}, [r5@64], r2
+ PLD [r7]
+ VST1.64 {D3}, [r5@64], r2
+ PLD [r7, r2]
+ VST1.64 {D4}, [r5@64], r2
+ PLD [r7, r2, LSL #1]
+ VST1.64 {D5}, [r5@64], r2
+ ADDGT r7, r7, r2, LSL #2
+ VST1.64 {D6}, [r5@64], r2
+ PLD [r7, -r2]
+ VST1.64 {D7}, [r5@64]
+ BGT ofcl_neon_lp
+ofcl_neon_end
+ LDMFD r13!,{r4-r7,PC}
+ ENDP
+
+oc_frag_recon_intra_neon PROC
+ ; r0 = unsigned char *_dst
+ ; r1 = int _ystride
+ ; r2 = const ogg_int16_t _residue[64]
+ MOV r3, #128
+ VDUP.S16 Q0, r3
+ VLDMIA r2, {D16-D31} ; D16= 3333222211110000 etc ; 9(8) cycles
+ VQADD.S16 Q8, Q8, Q0
+ VQADD.S16 Q9, Q9, Q0
+ VQADD.S16 Q10,Q10,Q0
+ VQADD.S16 Q11,Q11,Q0
+ VQADD.S16 Q12,Q12,Q0
+ VQADD.S16 Q13,Q13,Q0
+ VQADD.S16 Q14,Q14,Q0
+ VQADD.S16 Q15,Q15,Q0
+ VQMOVUN.S16 D16,Q8 ; D16= 7766554433221100 ; 1 cycle
+ VQMOVUN.S16 D17,Q9 ; D17= FFEEDDCCBBAA9988 ; 1 cycle
+ VQMOVUN.S16 D18,Q10 ; D18= NNMMLLKKJJIIHHGG ; 1 cycle
+ VST1.64 {D16},[r0@64], r1
+ VQMOVUN.S16 D19,Q11 ; D19= VVUUTTSSRRQQPPOO ; 1 cycle
+ VST1.64 {D17},[r0@64], r1
+ VQMOVUN.S16 D20,Q12 ; D20= ddccbbaaZZYYXXWW ; 1 cycle
+ VST1.64 {D18},[r0@64], r1
+ VQMOVUN.S16 D21,Q13 ; D21= llkkjjiihhggffee ; 1 cycle
+ VST1.64 {D19},[r0@64], r1
+ VQMOVUN.S16 D22,Q14 ; D22= ttssrrqqppoonnmm ; 1 cycle
+ VST1.64 {D20},[r0@64], r1
+ VQMOVUN.S16 D23,Q15 ; D23= !!@@zzyyxxwwvvuu ; 1 cycle
+ VST1.64 {D21},[r0@64], r1
+ VST1.64 {D22},[r0@64], r1
+ VST1.64 {D23},[r0@64], r1
+ MOV PC,R14
+ ENDP
+
+oc_frag_recon_inter_neon PROC
+ ; r0 = unsigned char *_dst
+ ; r1 = const unsigned char *_src
+ ; r2 = int _ystride
+ ; r3 = const ogg_int16_t _residue[64]
+ VLDMIA r3, {D16-D31} ; D16= 3333222211110000 etc ; 9(8) cycles
+ VLD1.64 {D0}, [r1], r2
+ VLD1.64 {D2}, [r1], r2
+ VMOVL.U8 Q0, D0 ; Q0 = __77__66__55__44__33__22__11__00
+ VLD1.64 {D4}, [r1], r2
+ VMOVL.U8 Q1, D2 ; etc
+ VLD1.64 {D6}, [r1], r2
+ VMOVL.U8 Q2, D4
+ VMOVL.U8 Q3, D6
+ VQADD.S16 Q8, Q8, Q0
+ VLD1.64 {D0}, [r1], r2
+ VQADD.S16 Q9, Q9, Q1
+ VLD1.64 {D2}, [r1], r2
+ VQADD.S16 Q10,Q10,Q2
+ VLD1.64 {D4}, [r1], r2
+ VQADD.S16 Q11,Q11,Q3
+ VLD1.64 {D6}, [r1], r2
+ VMOVL.U8 Q0, D0
+ VMOVL.U8 Q1, D2
+ VMOVL.U8 Q2, D4
+ VMOVL.U8 Q3, D6
+ VQADD.S16 Q12,Q12,Q0
+ VQADD.S16 Q13,Q13,Q1
+ VQADD.S16 Q14,Q14,Q2
+ VQADD.S16 Q15,Q15,Q3
+ VQMOVUN.S16 D16,Q8
+ VQMOVUN.S16 D17,Q9
+ VQMOVUN.S16 D18,Q10
+ VST1.64 {D16},[r0@64], r2
+ VQMOVUN.S16 D19,Q11
+ VST1.64 {D17},[r0@64], r2
+ VQMOVUN.S16 D20,Q12
+ VST1.64 {D18},[r0@64], r2
+ VQMOVUN.S16 D21,Q13
+ VST1.64 {D19},[r0@64], r2
+ VQMOVUN.S16 D22,Q14
+ VST1.64 {D20},[r0@64], r2
+ VQMOVUN.S16 D23,Q15
+ VST1.64 {D21},[r0@64], r2
+ VST1.64 {D22},[r0@64], r2
+ VST1.64 {D23},[r0@64], r2
+ MOV PC,R14
+ ENDP
+
+oc_frag_recon_inter2_neon PROC
+ ; r0 = unsigned char *_dst
+ ; r1 = const unsigned char *_src1
+ ; r2 = const unsigned char *_src2
+ ; r3 = int _ystride
+ LDR r12,[r13]
+ ; r12= const ogg_int16_t _residue[64]
+ VLDMIA r12,{D16-D31}
+ VLD1.64 {D0}, [r1], r3
+ VLD1.64 {D4}, [r2], r3
+ VLD1.64 {D1}, [r1], r3
+ VLD1.64 {D5}, [r2], r3
+ VHADD.U8 Q2, Q0, Q2 ; Q2 = FFEEDDCCBBAA99887766554433221100
+ VLD1.64 {D2}, [r1], r3
+ VLD1.64 {D6}, [r2], r3
+ VMOVL.U8 Q0, D4 ; Q0 = __77__66__55__44__33__22__11__00
+ VLD1.64 {D3}, [r1], r3
+ VMOVL.U8 Q2, D5 ; etc
+ VLD1.64 {D7}, [r2], r3
+ VHADD.U8 Q3, Q1, Q3
+ VQADD.S16 Q8, Q8, Q0
+ VQADD.S16 Q9, Q9, Q2
+ VLD1.64 {D0}, [r1], r3
+ VMOVL.U8 Q1, D6
+ VLD1.64 {D4}, [r2], r3
+ VMOVL.U8 Q3, D7
+ VLD1.64 {D1}, [r1], r3
+ VQADD.S16 Q10,Q10,Q1
+ VLD1.64 {D5}, [r2], r3
+ VQADD.S16 Q11,Q11,Q3
+ VLD1.64 {D2}, [r1], r3
+ VHADD.U8 Q2, Q0, Q2
+ VLD1.64 {D6}, [r2], r3
+ VLD1.64 {D3}, [r1], r3
+ VMOVL.U8 Q0, D4
+ VLD1.64 {D7}, [r2], r3
+ VMOVL.U8 Q2, D5
+ VHADD.U8 Q3, Q1, Q3
+ VQADD.S16 Q12,Q12,Q0
+ VQADD.S16 Q13,Q13,Q2
+ VMOVL.U8 Q1, D6
+ VMOVL.U8 Q3, D7
+ VQADD.S16 Q14,Q14,Q1
+ VQADD.S16 Q15,Q15,Q3
+ VQMOVUN.S16 D16,Q8
+ VQMOVUN.S16 D17,Q9
+ VQMOVUN.S16 D18,Q10
+ VST1.64 {D16},[r0@64], r3
+ VQMOVUN.S16 D19,Q11
+ VST1.64 {D17},[r0@64], r3
+ VQMOVUN.S16 D20,Q12
+ VST1.64 {D18},[r0@64], r3
+ VQMOVUN.S16 D21,Q13
+ VST1.64 {D19},[r0@64], r3
+ VQMOVUN.S16 D22,Q14
+ VST1.64 {D20},[r0@64], r3
+ VQMOVUN.S16 D23,Q15
+ VST1.64 {D21},[r0@64], r3
+ VST1.64 {D22},[r0@64], r3
+ VST1.64 {D23},[r0@64], r3
+ MOV PC,R14
+ ENDP
+ ]
+
+ END
diff --git a/media/libtheora/lib/arm/armidct.s b/media/libtheora/lib/arm/armidct.s
new file mode 100644
index 000000000..babd846ec
--- /dev/null
+++ b/media/libtheora/lib/arm/armidct.s
@@ -0,0 +1,1914 @@
+;********************************************************************
+;* *
+;* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+;* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+;* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+;* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+;* *
+;* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+;* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+;* *
+;********************************************************************
+; Original implementation:
+; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+; last mod: $Id: armidct.s 17481 2010-10-03 22:49:42Z tterribe $
+;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
+ ; Explicitly specifying alignment here because some versions of
+ ; gas don't align code correctly. See
+ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
+ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
+ ALIGN
+
+ GET armopts.s
+
+ EXPORT oc_idct8x8_1_arm
+ EXPORT oc_idct8x8_arm
+
+oc_idct8x8_1_arm PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_uint16_t _dc
+ ORR r1, r1, r1, LSL #16
+ MOV r2, r1
+ MOV r3, r1
+ MOV r12,r1
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ STMIA r0!,{r1,r2,r3,r12}
+ MOV PC, r14
+ ENDP
+
+oc_idct8x8_arm PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_int16_t *_x
+ ; r2 = int _last_zzi
+ CMP r2, #3
+ BLE oc_idct8x8_3_arm
+ CMP r2, #6
+ BLE oc_idct8x8_6_arm
+ CMP r2, #10
+ BLE oc_idct8x8_10_arm
+oc_idct8x8_slow_arm
+ STMFD r13!,{r4-r11,r14}
+ SUB r13,r13,#64*2
+; Row transforms
+ STR r0, [r13,#-4]!
+ ADD r0, r13, #4 ; Write to temp storage.
+ BL idct8core_arm
+ BL idct8core_arm
+ BL idct8core_arm
+ BL idct8core_arm
+ BL idct8core_arm
+ BL idct8core_arm
+ BL idct8core_arm
+ BL idct8core_arm
+ LDR r0, [r13], #4 ; Write to the final destination.
+ ; Clear input data for next block (decoder only).
+ SUB r2, r1, #8*16
+ CMP r0, r2
+ MOV r1, r13 ; And read from temp storage.
+ BEQ oc_idct8x8_slow_arm_cols
+ MOV r4, #0
+ MOV r5, #0
+ MOV r6, #0
+ MOV r7, #0
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+ STMIA r2!,{r4,r5,r6,r7}
+oc_idct8x8_slow_arm_cols
+; Column transforms
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ BL idct8core_down_arm
+ ADD r13,r13,#64*2
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+
+oc_idct8x8_10_arm PROC
+ STMFD r13!,{r4-r11,r14}
+ SUB r13,r13,#64*2
+; Row transforms
+ MOV r2, r0
+ MOV r0, r13 ; Write to temp storage.
+ BL idct4core_arm
+ BL idct3core_arm
+ BL idct2core_arm
+ BL idct1core_arm
+ ; Clear input data for next block (decoder only).
+ SUB r0, r1, #4*16
+ CMP r0, r2
+ MOV r1, r13 ; Read from temp storage.
+ BEQ oc_idct8x8_10_arm_cols
+ MOV r4, #0
+ STR r4, [r0]
+ STR r4, [r0,#4]
+ STR r4, [r0,#16]
+ STR r4, [r0,#20]
+ STR r4, [r0,#32]
+ STR r4, [r0,#48]
+ MOV r0, r2 ; Write to the final destination
+oc_idct8x8_10_arm_cols
+; Column transforms
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ BL idct4core_down_arm
+ ADD r13,r13,#64*2
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+
+oc_idct8x8_6_arm PROC
+ STMFD r13!,{r4-r7,r9-r11,r14}
+ SUB r13,r13,#64*2
+; Row transforms
+ MOV r2, r0
+ MOV r0, r13 ; Write to temp storage.
+ BL idct3core_arm
+ BL idct2core_arm
+ BL idct1core_arm
+ ; Clear input data for next block (decoder only).
+ SUB r0, r1, #3*16
+ CMP r0, r2
+ MOV r1, r13 ; Read from temp storage.
+ BEQ oc_idct8x8_6_arm_cols
+ MOV r4, #0
+ STR r4, [r0]
+ STR r4, [r0,#4]
+ STR r4, [r0,#16]
+ STR r4, [r0,#32]
+ MOV r0, r2 ; Write to the final destination
+oc_idct8x8_6_arm_cols
+; Column transforms
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ BL idct3core_down_arm
+ ADD r13,r13,#64*2
+ LDMFD r13!,{r4-r7,r9-r11,PC}
+ ENDP
+
+oc_idct8x8_3_arm PROC
+ STMFD r13!,{r4-r7,r9-r11,r14}
+ SUB r13,r13,#64*2
+; Row transforms
+ MOV r2, r0
+ MOV r0, r13 ; Write to temp storage.
+ BL idct2core_arm
+ BL idct1core_arm
+ ; Clear input data for next block (decoder only).
+ SUB r0, r1, #2*16
+ CMP r0, r2
+ MOV r1, r13 ; Read from temp storage.
+ MOVNE r4, #0
+ STRNE r4, [r0]
+ STRNE r4, [r0,#16]
+ MOVNE r0, r2 ; Write to the final destination
+; Column transforms
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ BL idct2core_down_arm
+ ADD r13,r13,#64*2
+ LDMFD r13!,{r4-r7,r9-r11,PC}
+ ENDP
+
+idct1core_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r3, [r1], #16
+ MOV r12,#0x05
+ ORR r12,r12,#0xB500
+ MUL r3, r12, r3
+ ; Stall ?
+ MOV r3, r3, ASR #16
+ STRH r3, [r0], #2
+ STRH r3, [r0, #14]
+ STRH r3, [r0, #30]
+ STRH r3, [r0, #46]
+ STRH r3, [r0, #62]
+ STRH r3, [r0, #78]
+ STRH r3, [r0, #94]
+ STRH r3, [r0, #110]
+ MOV PC,R14
+ ENDP
+
+idct2core_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r9, [r1], #16 ; r9 = x[0]
+ LDR r12,OC_C4S4
+ LDRSH r11,[r1, #-14] ; r11= x[1]
+ LDR r3, OC_C7S1
+ MUL r9, r12,r9 ; r9 = t[0]<<16 = OC_C4S4*x[0]
+ LDR r10,OC_C1S7
+ MUL r3, r11,r3 ; r3 = t[4]<<16 = OC_C7S1*x[1]
+ MOV r9, r9, ASR #16 ; r9 = t[0]
+ MUL r11,r10,r11 ; r11= t[7]<<16 = OC_C1S7*x[1]
+ MOV r3, r3, ASR #16 ; r3 = t[4]
+ MUL r10,r12,r3 ; r10= t[5]<<16 = OC_C4S4*t[4]
+ MOV r11,r11,ASR #16 ; r11= t[7]
+ MUL r12,r11,r12 ; r12= t[6]<<16 = OC_C4S4*t[7]
+ MOV r10,r10,ASR #16 ; r10= t[5]
+ ADD r12,r9,r12,ASR #16 ; r12= t[0]+t[6]
+ ADD r12,r12,r10 ; r12= t[0]+t2[6] = t[0]+t[6]+t[5]
+ SUB r10,r12,r10,LSL #1 ; r10= t[0]+t2[5] = t[0]+t[6]-t[5]
+ ADD r3, r3, r9 ; r3 = t[0]+t[4]
+ ADD r11,r11,r9 ; r11= t[0]+t[7]
+ STRH r11,[r0], #2 ; y[0] = t[0]+t[7]
+ STRH r12,[r0, #14] ; y[1] = t[0]+t[6]
+ STRH r10,[r0, #30] ; y[2] = t[0]+t[5]
+ STRH r3, [r0, #46] ; y[3] = t[0]+t[4]
+ RSB r3, r3, r9, LSL #1 ; r3 = t[0]*2-(t[0]+t[4])=t[0]-t[4]
+ RSB r10,r10,r9, LSL #1 ; r10= t[0]*2-(t[0]+t[5])=t[0]-t[5]
+ RSB r12,r12,r9, LSL #1 ; r12= t[0]*2-(t[0]+t[6])=t[0]-t[6]
+ RSB r11,r11,r9, LSL #1 ; r1 = t[0]*2-(t[0]+t[7])=t[0]-t[7]
+ STRH r3, [r0, #62] ; y[4] = t[0]-t[4]
+ STRH r10,[r0, #78] ; y[5] = t[0]-t[5]
+ STRH r12,[r0, #94] ; y[6] = t[0]-t[6]
+ STRH r11,[r0, #110] ; y[7] = t[0]-t[7]
+ MOV PC,r14
+ ENDP
+
+idct2core_down_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r9, [r1], #16 ; r9 = x[0]
+ LDR r12,OC_C4S4
+ LDRSH r11,[r1, #-14] ; r11= x[1]
+ LDR r3, OC_C7S1
+ MUL r9, r12,r9 ; r9 = t[0]<<16 = OC_C4S4*x[0]
+ LDR r10,OC_C1S7
+ MUL r3, r11,r3 ; r3 = t[4]<<16 = OC_C7S1*x[1]
+ MOV r9, r9, ASR #16 ; r9 = t[0]
+ MUL r11,r10,r11 ; r11= t[7]<<16 = OC_C1S7*x[1]
+ ADD r9, r9, #8 ; r9 = t[0]+8
+ MOV r3, r3, ASR #16 ; r3 = t[4]
+ MUL r10,r12,r3 ; r10= t[5]<<16 = OC_C4S4*t[4]
+ MOV r11,r11,ASR #16 ; r11= t[7]
+ MUL r12,r11,r12 ; r12= t[6]<<16 = OC_C4S4*t[7]
+ MOV r10,r10,ASR #16 ; r10= t[5]
+ ADD r12,r9,r12,ASR #16 ; r12= t[0]+t[6]+8
+ ADD r12,r12,r10 ; r12= t[0]+t2[6] = t[0]+t[6]+t[5]+8
+ SUB r10,r12,r10,LSL #1 ; r10= t[0]+t2[5] = t[0]+t[6]-t[5]+8
+ ADD r3, r3, r9 ; r3 = t[0]+t[4]+8
+ ADD r11,r11,r9 ; r11= t[0]+t[7]+8
+ ; TODO: This is wrong.
+ ; The C code truncates to 16 bits by storing to RAM and doing the
+ ; shifts later; we've got an extra 4 bits here.
+ MOV r4, r11,ASR #4
+ MOV r5, r12,ASR #4
+ MOV r6, r10,ASR #4
+ MOV r7, r3, ASR #4
+ RSB r3, r3, r9, LSL #1 ;r3 =t[0]*2+8-(t[0]+t[4])=t[0]-t[4]+8
+ RSB r10,r10,r9, LSL #1 ;r10=t[0]*2+8-(t[0]+t[5])=t[0]-t[5]+8
+ RSB r12,r12,r9, LSL #1 ;r12=t[0]*2+8-(t[0]+t[6])=t[0]-t[6]+8
+ RSB r11,r11,r9, LSL #1 ;r11=t[0]*2+8-(t[0]+t[7])=t[0]-t[7]+8
+ MOV r3, r3, ASR #4
+ MOV r10,r10,ASR #4
+ MOV r12,r12,ASR #4
+ MOV r11,r11,ASR #4
+ STRH r4, [r0], #2 ; y[0] = t[0]+t[7]
+ STRH r5, [r0, #14] ; y[1] = t[0]+t[6]
+ STRH r6, [r0, #30] ; y[2] = t[0]+t[5]
+ STRH r7, [r0, #46] ; y[3] = t[0]+t[4]
+ STRH r3, [r0, #62] ; y[4] = t[0]-t[4]
+ STRH r10,[r0, #78] ; y[5] = t[0]-t[5]
+ STRH r12,[r0, #94] ; y[6] = t[0]-t[6]
+ STRH r11,[r0, #110] ; y[7] = t[0]-t[7]
+ MOV PC,r14
+ ENDP
+
+idct3core_arm PROC
+ LDRSH r9, [r1], #16 ; r9 = x[0]
+ LDR r12,OC_C4S4 ; r12= OC_C4S4
+ LDRSH r3, [r1, #-12] ; r3 = x[2]
+ LDR r10,OC_C6S2 ; r10= OC_C6S2
+ MUL r9, r12,r9 ; r9 = t[0]<<16 = OC_C4S4*x[0]
+ LDR r4, OC_C2S6 ; r4 = OC_C2S6
+ MUL r10,r3, r10 ; r10= t[2]<<16 = OC_C6S2*x[2]
+ LDRSH r11,[r1, #-14] ; r11= x[1]
+ MUL r3, r4, r3 ; r3 = t[3]<<16 = OC_C2S6*x[2]
+ LDR r4, OC_C7S1 ; r4 = OC_C7S1
+ LDR r5, OC_C1S7 ; r5 = OC_C1S7
+ MOV r9, r9, ASR #16 ; r9 = t[0]
+ MUL r4, r11,r4 ; r4 = t[4]<<16 = OC_C7S1*x[1]
+ ADD r3, r9, r3, ASR #16 ; r3 = t[0]+t[3]
+ MUL r11,r5, r11 ; r11= t[7]<<16 = OC_C1S7*x[1]
+ MOV r4, r4, ASR #16 ; r4 = t[4]
+ MUL r5, r12,r4 ; r5 = t[5]<<16 = OC_C4S4*t[4]
+ MOV r11,r11,ASR #16 ; r11= t[7]
+ MUL r12,r11,r12 ; r12= t[6]<<16 = OC_C4S4*t[7]
+ ADD r10,r9, r10,ASR #16 ; r10= t[1] = t[0]+t[2]
+ RSB r6, r10,r9, LSL #1 ; r6 = t[2] = t[0]-t[2]
+ ; r3 = t2[0] = t[0]+t[3]
+ RSB r9, r3, r9, LSL #1 ; r9 = t2[3] = t[0]-t[3]
+ MOV r12,r12,ASR #16 ; r12= t[6]
+ ADD r5, r12,r5, ASR #16 ; r5 = t2[6] = t[6]+t[5]
+ RSB r12,r5, r12,LSL #1 ; r12= t2[5] = t[6]-t[5]
+ ADD r11,r3, r11 ; r11= t2[0]+t[7]
+ ADD r5, r10,r5 ; r5 = t[1]+t2[6]
+ ADD r12,r6, r12 ; r12= t[2]+t2[5]
+ ADD r4, r9, r4 ; r4 = t2[3]+t[4]
+ STRH r11,[r0], #2 ; y[0] = t[0]+t[7]
+ STRH r5, [r0, #14] ; y[1] = t[1]+t2[6]
+ STRH r12,[r0, #30] ; y[2] = t[2]+t2[5]
+ STRH r4, [r0, #46] ; y[3] = t2[3]+t[4]
+ RSB r11,r11,r3, LSL #1 ; r11= t2[0] - t[7]
+ RSB r5, r5, r10,LSL #1 ; r5 = t[1] - t2[6]
+ RSB r12,r12,r6, LSL #1 ; r6 = t[2] - t2[5]
+ RSB r4, r4, r9, LSL #1 ; r4 = t2[3] - t[4]
+ STRH r4, [r0, #62] ; y[4] = t2[3]-t[4]
+ STRH r12,[r0, #78] ; y[5] = t[2]-t2[5]
+ STRH r5, [r0, #94] ; y[6] = t[1]-t2[6]
+ STRH r11,[r0, #110] ; y[7] = t2[0]-t[7]
+ MOV PC,R14
+ ENDP
+
+idct3core_down_arm PROC
+ LDRSH r9, [r1], #16 ; r9 = x[0]
+ LDR r12,OC_C4S4 ; r12= OC_C4S4
+ LDRSH r3, [r1, #-12] ; r3 = x[2]
+ LDR r10,OC_C6S2 ; r10= OC_C6S2
+ MUL r9, r12,r9 ; r9 = t[0]<<16 = OC_C4S4*x[0]
+ LDR r4, OC_C2S6 ; r4 = OC_C2S6
+ MUL r10,r3, r10 ; r10= t[2]<<16 = OC_C6S2*x[2]
+ LDRSH r11,[r1, #-14] ; r11= x[1]
+ MUL r3, r4, r3 ; r3 = t[3]<<16 = OC_C2S6*x[2]
+ LDR r4, OC_C7S1 ; r4 = OC_C7S1
+ LDR r5, OC_C1S7 ; r5 = OC_C1S7
+ MOV r9, r9, ASR #16 ; r9 = t[0]
+ MUL r4, r11,r4 ; r4 = t[4]<<16 = OC_C7S1*x[1]
+ ADD r9, r9, #8 ; r9 = t[0]+8
+ MUL r11,r5, r11 ; r11= t[7]<<16 = OC_C1S7*x[1]
+ ADD r3, r9, r3, ASR #16 ; r3 = t[0]+t[3]+8
+ MOV r4, r4, ASR #16 ; r4 = t[4]
+ MUL r5, r12,r4 ; r5 = t[5]<<16 = OC_C4S4*t[4]
+ MOV r11,r11,ASR #16 ; r11= t[7]
+ MUL r12,r11,r12 ; r12= t[6]<<16 = OC_C4S4*t[7]
+ ADD r10,r9, r10,ASR #16 ; r10= t[1]+8 = t[0]+t[2]+8
+ RSB r6, r10,r9, LSL #1 ; r6 = t[2]+8 = t[0]-t[2]+8
+ ; r3 = t2[0]+8 = t[0]+t[3]+8
+ RSB r9, r3, r9, LSL #1 ; r9 = t2[3]+8 = t[0]-t[3]+8
+ MOV r12,r12,ASR #16 ; r12= t[6]
+ ADD r5, r12,r5, ASR #16 ; r5 = t2[6] = t[6]+t[5]
+ RSB r12,r5, r12,LSL #1 ; r12= t2[5] = t[6]-t[5]
+ ADD r11,r3, r11 ; r11= t2[0]+t[7] +8
+ ADD r5, r10,r5 ; r5 = t[1] +t2[6]+8
+ ADD r12,r6, r12 ; r12= t[2] +t2[5]+8
+ ADD r4, r9, r4 ; r4 = t2[3]+t[4] +8
+ RSB r3, r11,r3, LSL #1 ; r11= t2[0] - t[7] + 8
+ RSB r10,r5, r10,LSL #1 ; r5 = t[1] - t2[6] + 8
+ RSB r6, r12,r6, LSL #1 ; r6 = t[2] - t2[5] + 8
+ RSB r9, r4, r9, LSL #1 ; r4 = t2[3] - t[4] + 8
+ ; TODO: This is wrong.
+ ; The C code truncates to 16 bits by storing to RAM and doing the
+ ; shifts later; we've got an extra 4 bits here.
+ MOV r11,r11,ASR #4
+ MOV r5, r5, ASR #4
+ MOV r12,r12,ASR #4
+ MOV r4, r4, ASR #4
+ MOV r9, r9, ASR #4
+ MOV r6, r6, ASR #4
+ MOV r10,r10,ASR #4
+ MOV r3, r3, ASR #4
+ STRH r11,[r0], #2 ; y[0] = t[0]+t[7]
+ STRH r5, [r0, #14] ; y[1] = t[1]+t2[6]
+ STRH r12,[r0, #30] ; y[2] = t[2]+t2[5]
+ STRH r4, [r0, #46] ; y[3] = t2[3]+t[4]
+ STRH r9, [r0, #62] ; y[4] = t2[3]-t[4]
+ STRH r6, [r0, #78] ; y[5] = t[2]-t2[5]
+ STRH r10,[r0, #94] ; y[6] = t[1]-t2[6]
+ STRH r3, [r0, #110] ; y[7] = t2[0]-t[7]
+ MOV PC,R14
+ ENDP
+
+idct4core_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r9, [r1], #16 ; r9 = x[0]
+ LDR r10,OC_C4S4 ; r10= OC_C4S4
+ LDRSH r12,[r1, #-12] ; r12= x[2]
+ LDR r4, OC_C6S2 ; r4 = OC_C6S2
+ MUL r9, r10,r9 ; r9 = t[0]<<16 = OC_C4S4*x[0]
+ LDR r5, OC_C2S6 ; r5 = OC_C2S6
+ MUL r4, r12,r4 ; r4 = t[2]<<16 = OC_C6S2*x[2]
+ LDRSH r3, [r1, #-14] ; r3 = x[1]
+ MUL r5, r12,r5 ; r5 = t[3]<<16 = OC_C2S6*x[2]
+ LDR r6, OC_C7S1 ; r6 = OC_C7S1
+ LDR r12,OC_C1S7 ; r12= OC_C1S7
+ LDRSH r11,[r1, #-10] ; r11= x[3]
+ MUL r6, r3, r6 ; r6 = t[4]<<16 = OC_C7S1*x[1]
+ LDR r7, OC_C5S3 ; r7 = OC_C5S3
+ MUL r3, r12,r3 ; r3 = t[7]<<16 = OC_C1S7*x[1]
+ LDR r8, OC_C3S5 ; r8 = OC_C3S5
+ MUL r7, r11,r7 ; r7 = -t[5]<<16 = OC_C5S3*x[3]
+ MOV r9, r9, ASR #16 ; r9 = t[0]
+ MUL r11,r8, r11 ; r11= t[6]<<16 = OC_C3S5*x[3]
+ MOV r6, r6, ASR #16 ; r6 = t[4]
+; TODO: This is wrong; t[4]-t[5] and t[7]-t[6] need to be truncated to 16-bit
+; before multiplying, not after (this is not equivalent)
+ SUB r7, r6, r7, ASR #16 ; r7 = t2[4]=t[4]+t[5] (as r7=-t[5])
+ RSB r6, r7, r6, LSL #1 ; r6 = t[4]-t[5]
+ MUL r6, r10,r6 ; r6 = t2[5]<<16 =OC_C4S4*(t[4]-t[5])
+ MOV r3, r3, ASR #16 ; r3 = t[7]
+ ADD r11,r3, r11,ASR #16 ; r11= t2[7]=t[7]+t[6]
+ RSB r3, r11,r3, LSL #1 ; r3 = t[7]-t[6]
+ MUL r3, r10,r3 ; r3 = t2[6]<<16 =OC_C4S4*(t[7]-t[6])
+ ADD r4, r9, r4, ASR #16 ; r4 = t[1] = t[0] + t[2]
+ RSB r10,r4, r9, LSL #1 ; r10= t[2] = t[0] - t[2]
+ ADD r5, r9, r5, ASR #16 ; r5 = t[0] = t[0] + t[3]
+ RSB r9, r5, r9, LSL #1 ; r9 = t[3] = t[0] - t[3]
+ MOV r3, r3, ASR #16 ; r3 = t2[6]
+ ADD r6, r3, r6, ASR #16 ; r6 = t3[6] = t2[6]+t2[5]
+ RSB r3, r6, r3, LSL #1 ; r3 = t3[5] = t2[6]-t2[5]
+ ADD r11,r5, r11 ; r11= t[0]+t2[7]
+ ADD r6, r4, r6 ; r6 = t[1]+t3[6]
+ ADD r3, r10,r3 ; r3 = t[2]+t3[5]
+ ADD r7, r9, r7 ; r7 = t[3]+t2[4]
+ STRH r11,[r0], #2 ; y[0] = t[0]+t[7]
+ STRH r6, [r0, #14] ; y[1] = t[1]+t2[6]
+ STRH r3, [r0, #30] ; y[2] = t[2]+t2[5]
+ STRH r7, [r0, #46] ; y[3] = t2[3]+t[4]
+ RSB r11,r11,r5, LSL #1 ; r11= t[0]-t2[7]
+ RSB r6, r6, r4, LSL #1 ; r6 = t[1]-t3[6]
+ RSB r3, r3, r10,LSL #1 ; r3 = t[2]-t3[5]
+ RSB r7, r7, r9, LSL #1 ; r7 = t[3]-t2[4]
+ STRH r7, [r0, #62] ; y[4] = t2[3]-t[4]
+ STRH r3, [r0, #78] ; y[5] = t[2]-t2[5]
+ STRH r6, [r0, #94] ; y[6] = t[1]-t2[6]
+ STRH r11, [r0, #110] ; y[7] = t2[0]-t[7]
+ MOV PC,r14
+ ENDP
+
+idct4core_down_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r9, [r1], #16 ; r9 = x[0]
+ LDR r10,OC_C4S4 ; r10= OC_C4S4
+ LDRSH r12,[r1, #-12] ; r12= x[2]
+ LDR r4, OC_C6S2 ; r4 = OC_C6S2
+ MUL r9, r10,r9 ; r9 = t[0]<<16 = OC_C4S4*x[0]
+ LDR r5, OC_C2S6 ; r5 = OC_C2S6
+ MUL r4, r12,r4 ; r4 = t[2]<<16 = OC_C6S2*x[2]
+ LDRSH r3, [r1, #-14] ; r3 = x[1]
+ MUL r5, r12,r5 ; r5 = t[3]<<16 = OC_C2S6*x[2]
+ LDR r6, OC_C7S1 ; r6 = OC_C7S1
+ LDR r12,OC_C1S7 ; r12= OC_C1S7
+ LDRSH r11,[r1, #-10] ; r11= x[3]
+ MUL r6, r3, r6 ; r6 = t[4]<<16 = OC_C7S1*x[1]
+ LDR r7, OC_C5S3 ; r7 = OC_C5S3
+ MUL r3, r12,r3 ; r3 = t[7]<<16 = OC_C1S7*x[1]
+ LDR r8, OC_C3S5 ; r8 = OC_C3S5
+ MUL r7, r11,r7 ; r7 = -t[5]<<16 = OC_C5S3*x[3]
+ MOV r9, r9, ASR #16 ; r9 = t[0]
+ MUL r11,r8, r11 ; r11= t[6]<<16 = OC_C3S5*x[3]
+ MOV r6, r6, ASR #16 ; r6 = t[4]
+; TODO: This is wrong; t[4]-t[5] and t[7]-t[6] need to be truncated to 16-bit
+; before multiplying, not after (this is not equivalent)
+ SUB r7, r6, r7, ASR #16 ; r7 = t2[4]=t[4]+t[5] (as r7=-t[5])
+ RSB r6, r7, r6, LSL #1 ; r6 = t[4]-t[5]
+ MUL r6, r10,r6 ; r6 = t2[5]<<16 =OC_C4S4*(t[4]-t[5])
+ MOV r3, r3, ASR #16 ; r3 = t[7]
+ ADD r11,r3, r11,ASR #16 ; r11= t2[7]=t[7]+t[6]
+ RSB r3, r11,r3, LSL #1 ; r3 = t[7]-t[6]
+ ADD r9, r9, #8 ; r9 = t[0]+8
+ MUL r3, r10,r3 ; r3 = t2[6]<<16 =OC_C4S4*(t[7]-t[6])
+ ADD r4, r9, r4, ASR #16 ; r4 = t[1] = t[0] + t[2] + 8
+ RSB r10,r4, r9, LSL #1 ; r10= t[2] = t[0] - t[2] + 8
+ ADD r5, r9, r5, ASR #16 ; r5 = t[0] = t[0] + t[3] + 8
+ RSB r9, r5, r9, LSL #1 ; r9 = t[3] = t[0] - t[3] + 8
+ MOV r3, r3, ASR #16 ; r3 = t2[6]
+ ADD r6, r3, r6, ASR #16 ; r6 = t3[6] = t2[6]+t2[5]
+ RSB r3, r6, r3, LSL #1 ; r3 = t3[5] = t2[6]-t2[5]
+ ADD r5, r5, r11 ; r5 = t[0]+t2[7]+8
+ ADD r4, r4, r6 ; r4 = t[1]+t3[6]+8
+ ADD r10,r10,r3 ; r10= t[2]+t3[5]+8
+ ADD r9, r9, r7 ; r9 = t[3]+t2[4]+8
+ SUB r11,r5, r11,LSL #1 ; r11= t[0]-t2[7]+8
+ SUB r6, r4, r6, LSL #1 ; r6 = t[1]-t3[6]+8
+ SUB r3, r10,r3, LSL #1 ; r3 = t[2]-t3[5]+8
+ SUB r7, r9, r7, LSL #1 ; r7 = t[3]-t2[4]+8
+ ; TODO: This is wrong.
+ ; The C code truncates to 16 bits by storing to RAM and doing the
+ ; shifts later; we've got an extra 4 bits here.
+ MOV r11,r11,ASR #4
+ MOV r6, r6, ASR #4
+ MOV r3, r3, ASR #4
+ MOV r7, r7, ASR #4
+ MOV r9, r9, ASR #4
+ MOV r10,r10,ASR #4
+ MOV r4, r4, ASR #4
+ MOV r5, r5, ASR #4
+ STRH r5,[r0], #2 ; y[0] = t[0]+t[7]
+ STRH r4, [r0, #14] ; y[1] = t[1]+t2[6]
+ STRH r10,[r0, #30] ; y[2] = t[2]+t2[5]
+ STRH r9, [r0, #46] ; y[3] = t2[3]+t[4]
+ STRH r7, [r0, #62] ; y[4] = t2[3]-t[4]
+ STRH r3, [r0, #78] ; y[5] = t[2]-t2[5]
+ STRH r6, [r0, #94] ; y[6] = t[1]-t2[6]
+ STRH r11,[r0, #110] ; y[7] = t2[0]-t[7]
+ MOV PC,r14
+ ENDP
+
+idct8core_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r2, [r1],#16 ; r2 = x[0]
+ STMFD r13!,{r1,r14}
+ LDRSH r6, [r1, #-8] ; r6 = x[4]
+ LDR r12,OC_C4S4 ; r12= C4S4
+ LDRSH r4, [r1, #-12] ; r4 = x[2]
+ ADD r2, r2, r6 ; r2 = x[0] + x[4]
+ SUB r6, r2, r6, LSL #1 ; r6 = x[0] - x[4]
+ ; For spec compliance, these sums must be truncated to 16-bit precision
+ ; _before_ the multiply (not after).
+ ; Sadly, ARMv4 provides no simple way to do that.
+ MOV r2, r2, LSL #16
+ MOV r6, r6, LSL #16
+ MOV r2, r2, ASR #16
+ MOV r6, r6, ASR #16
+ MUL r2, r12,r2 ; r2 = t[0]<<16 = C4S4*(x[0]+x[4])
+ LDRSH r8, [r1, #-4] ; r8 = x[6]
+ LDR r7, OC_C6S2 ; r7 = OC_C6S2
+ MUL r6, r12,r6 ; r6 = t[1]<<16 = C4S4*(x[0]-x[4])
+ LDR r14,OC_C2S6 ; r14= OC_C2S6
+ MUL r3, r4, r7 ; r3 = OC_C6S2*x[2]
+ LDR r5, OC_C7S1 ; r5 = OC_C7S1
+ MUL r4, r14,r4 ; r4 = OC_C2S6*x[2]
+ MOV r3, r3, ASR #16 ; r3 = OC_C6S2*x[2]>>16
+ MUL r14,r8, r14 ; r14= OC_C2S6*x[6]
+ MOV r4, r4, ASR #16 ; r4 = OC_C2S6*x[2]>>16
+ MUL r8, r7, r8 ; r8 = OC_C6S2*x[6]
+ LDR r7, OC_C1S7 ; r7 = OC_C1S7
+ SUB r3, r3, r14,ASR #16 ; r3=t[2]=C6S2*x[2]>>16-C2S6*x[6]>>16
+ LDRSH r14,[r1, #-14] ; r14= x[1]
+ ADD r4, r4, r8, ASR #16 ; r4=t[3]=C2S6*x[2]>>16+C6S2*x[6]>>16
+ LDRSH r8, [r1, #-2] ; r8 = x[7]
+ MUL r9, r5, r14 ; r9 = OC_C7S1*x[1]
+ LDRSH r10,[r1, #-6] ; r10= x[5]
+ MUL r14,r7, r14 ; r14= OC_C1S7*x[1]
+ MOV r9, r9, ASR #16 ; r9 = OC_C7S1*x[1]>>16
+ MUL r7, r8, r7 ; r7 = OC_C1S7*x[7]
+ MOV r14,r14,ASR #16 ; r14= OC_C1S7*x[1]>>16
+ MUL r8, r5, r8 ; r8 = OC_C7S1*x[7]
+ LDRSH r1, [r1, #-10] ; r1 = x[3]
+ LDR r5, OC_C3S5 ; r5 = OC_C3S5
+ LDR r11,OC_C5S3 ; r11= OC_C5S3
+ ADD r8, r14,r8, ASR #16 ; r8=t[7]=C1S7*x[1]>>16+C7S1*x[7]>>16
+ MUL r14,r5, r10 ; r14= OC_C3S5*x[5]
+ SUB r9, r9, r7, ASR #16 ; r9=t[4]=C7S1*x[1]>>16-C1S7*x[7]>>16
+ MUL r10,r11,r10 ; r10= OC_C5S3*x[5]
+ MOV r14,r14,ASR #16 ; r14= OC_C3S5*x[5]>>16
+ MUL r11,r1, r11 ; r11= OC_C5S3*x[3]
+ MOV r10,r10,ASR #16 ; r10= OC_C5S3*x[5]>>16
+ MUL r1, r5, r1 ; r1 = OC_C3S5*x[3]
+ SUB r14,r14,r11,ASR #16 ;r14=t[5]=C3S5*x[5]>>16-C5S3*x[3]>>16
+ ADD r10,r10,r1, ASR #16 ;r10=t[6]=C5S3*x[5]>>16+C3S5*x[3]>>16
+ ; r2=t[0]<<16 r3=t[2] r4=t[3] r6=t[1]<<16 r8=t[7] r9=t[4]
+ ; r10=t[6] r12=C4S4 r14=t[5]
+; TODO: This is wrong; t[4]-t[5] and t[7]-t[6] need to be truncated to 16-bit
+; before multiplying, not after (this is not equivalent)
+ ; Stage 2
+ ; 4-5 butterfly
+ ADD r9, r9, r14 ; r9 = t2[4] = t[4]+t[5]
+ SUB r14,r9, r14, LSL #1 ; r14= t[4]-t[5]
+ MUL r14,r12,r14 ; r14= t2[5]<<16 = C4S4*(t[4]-t[5])
+ ; 7-6 butterfly
+ ADD r8, r8, r10 ; r8 = t2[7] = t[7]+t[6]
+ SUB r10,r8, r10, LSL #1 ; r10= t[7]-t[6]
+ MUL r10,r12,r10 ; r10= t2[6]<<16 = C4S4*(t[7]+t[6])
+ ; r2=t[0]<<16 r3=t[2] r4=t[3] r6=t[1]<<16 r8=t2[7] r9=t2[4]
+ ; r10=t2[6]<<16 r12=C4S4 r14=t2[5]<<16
+ ; Stage 3
+ ; 0-3 butterfly
+ ADD r2, r4, r2, ASR #16 ; r2 = t2[0] = t[0] + t[3]
+ SUB r4, r2, r4, LSL #1 ; r4 = t2[3] = t[0] - t[3]
+ ; 1-2 butterfly
+ ADD r6, r3, r6, ASR #16 ; r6 = t2[1] = t[1] + t[2]
+ SUB r3, r6, r3, LSL #1 ; r3 = t2[2] = t[1] - t[2]
+ ; 6-5 butterfly
+ MOV r14,r14,ASR #16 ; r14= t2[5]
+ ADD r10,r14,r10,ASR #16 ; r10= t3[6] = t[6] + t[5]
+ SUB r14,r10,r14,LSL #1 ; r14= t3[5] = t[6] - t[5]
+ ; r2=t2[0] r3=t2[2] r4=t2[3] r6=t2[1] r8=t2[7] r9=t2[4]
+ ; r10=t3[6] r14=t3[5]
+ ; Stage 4
+ ADD r2, r2, r8 ; r2 = t[0] + t[7]
+ ADD r6, r6, r10 ; r6 = t[1] + t[6]
+ ADD r3, r3, r14 ; r3 = t[2] + t[5]
+ ADD r4, r4, r9 ; r4 = t[3] + t[4]
+ SUB r8, r2, r8, LSL #1 ; r8 = t[0] - t[7]
+ SUB r10,r6, r10,LSL #1 ; r10= t[1] - t[6]
+ SUB r14,r3, r14,LSL #1 ; r14= t[2] - t[5]
+ SUB r9, r4, r9, LSL #1 ; r9 = t[3] - t[4]
+ STRH r2, [r0], #2 ; y[0] = t[0]+t[7]
+ STRH r6, [r0, #14] ; y[1] = t[1]+t[6]
+ STRH r3, [r0, #30] ; y[2] = t[2]+t[5]
+ STRH r4, [r0, #46] ; y[3] = t[3]+t[4]
+ STRH r9, [r0, #62] ; y[4] = t[3]-t[4]
+ STRH r14,[r0, #78] ; y[5] = t[2]-t[5]
+ STRH r10,[r0, #94] ; y[6] = t[1]-t[6]
+ STRH r8, [r0, #110] ; y[7] = t[0]-t[7]
+ LDMFD r13!,{r1,PC}
+ ENDP
+
+idct8core_down_arm PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r2, [r1],#16 ; r2 = x[0]
+ STMFD r13!,{r1,r14}
+ LDRSH r6, [r1, #-8] ; r6 = x[4]
+ LDR r12,OC_C4S4 ; r12= C4S4
+ LDRSH r4, [r1, #-12] ; r4 = x[2]
+ ADD r2, r2, r6 ; r2 = x[0] + x[4]
+ SUB r6, r2, r6, LSL #1 ; r6 = x[0] - x[4]
+ ; For spec compliance, these sums must be truncated to 16-bit precision
+ ; _before_ the multiply (not after).
+ ; Sadly, ARMv4 provides no simple way to do that.
+ MOV r2, r2, LSL #16
+ MOV r6, r6, LSL #16
+ MOV r2, r2, ASR #16
+ MOV r6, r6, ASR #16
+ MUL r2, r12,r2 ; r2 = t[0]<<16 = C4S4*(x[0]+x[4])
+ LDRSH r8, [r1, #-4] ; r8 = x[6]
+ LDR r7, OC_C6S2 ; r7 = OC_C6S2
+ MUL r6, r12,r6 ; r6 = t[1]<<16 = C4S4*(x[0]-x[4])
+ LDR r14,OC_C2S6 ; r14= OC_C2S6
+ MUL r3, r4, r7 ; r3 = OC_C6S2*x[2]
+ LDR r5, OC_C7S1 ; r5 = OC_C7S1
+ MUL r4, r14,r4 ; r4 = OC_C2S6*x[2]
+ MOV r3, r3, ASR #16 ; r3 = OC_C6S2*x[2]>>16
+ MUL r14,r8, r14 ; r14= OC_C2S6*x[6]
+ MOV r4, r4, ASR #16 ; r4 = OC_C2S6*x[2]>>16
+ MUL r8, r7, r8 ; r8 = OC_C6S2*x[6]
+ LDR r7, OC_C1S7 ; r7 = OC_C1S7
+ SUB r3, r3, r14,ASR #16 ; r3=t[2]=C6S2*x[2]>>16-C2S6*x[6]>>16
+ LDRSH r14,[r1, #-14] ; r14= x[1]
+ ADD r4, r4, r8, ASR #16 ; r4=t[3]=C2S6*x[2]>>16+C6S2*x[6]>>16
+ LDRSH r8, [r1, #-2] ; r8 = x[7]
+ MUL r9, r5, r14 ; r9 = OC_C7S1*x[1]
+ LDRSH r10,[r1, #-6] ; r10= x[5]
+ MUL r14,r7, r14 ; r14= OC_C1S7*x[1]
+ MOV r9, r9, ASR #16 ; r9 = OC_C7S1*x[1]>>16
+ MUL r7, r8, r7 ; r7 = OC_C1S7*x[7]
+ MOV r14,r14,ASR #16 ; r14= OC_C1S7*x[1]>>16
+ MUL r8, r5, r8 ; r8 = OC_C7S1*x[7]
+ LDRSH r1, [r1, #-10] ; r1 = x[3]
+ LDR r5, OC_C3S5 ; r5 = OC_C3S5
+ LDR r11,OC_C5S3 ; r11= OC_C5S3
+ ADD r8, r14,r8, ASR #16 ; r8=t[7]=C1S7*x[1]>>16+C7S1*x[7]>>16
+ MUL r14,r5, r10 ; r14= OC_C3S5*x[5]
+ SUB r9, r9, r7, ASR #16 ; r9=t[4]=C7S1*x[1]>>16-C1S7*x[7]>>16
+ MUL r10,r11,r10 ; r10= OC_C5S3*x[5]
+ MOV r14,r14,ASR #16 ; r14= OC_C3S5*x[5]>>16
+ MUL r11,r1, r11 ; r11= OC_C5S3*x[3]
+ MOV r10,r10,ASR #16 ; r10= OC_C5S3*x[5]>>16
+ MUL r1, r5, r1 ; r1 = OC_C3S5*x[3]
+ SUB r14,r14,r11,ASR #16 ;r14=t[5]=C3S5*x[5]>>16-C5S3*x[3]>>16
+ ADD r10,r10,r1, ASR #16 ;r10=t[6]=C5S3*x[5]>>16+C3S5*x[3]>>16
+ ; r2=t[0]<<16 r3=t[2] r4=t[3] r6=t[1]<<16 r8=t[7] r9=t[4]
+ ; r10=t[6] r12=C4S4 r14=t[5]
+ ; Stage 2
+; TODO: This is wrong; t[4]-t[5] and t[7]-t[6] need to be truncated to 16-bit
+; before multiplying, not after (this is not equivalent)
+ ; 4-5 butterfly
+ ADD r9, r9, r14 ; r9 = t2[4] = t[4]+t[5]
+ SUB r14,r9, r14, LSL #1 ; r14= t[4]-t[5]
+ MUL r14,r12,r14 ; r14= t2[5]<<16 = C4S4*(t[4]-t[5])
+ ; 7-6 butterfly
+ ADD r8, r8, r10 ; r8 = t2[7] = t[7]+t[6]
+ SUB r10,r8, r10, LSL #1 ; r10= t[7]-t[6]
+ MUL r10,r12,r10 ; r10= t2[6]<<16 = C4S4*(t[7]+t[6])
+ ; r2=t[0]<<16 r3=t[2] r4=t[3] r6=t[1]<<16 r8=t2[7] r9=t2[4]
+ ; r10=t2[6]<<16 r12=C4S4 r14=t2[5]<<16
+ ; Stage 3
+ ADD r2, r2, #8<<16 ; r2 = t[0]+8<<16
+ ADD r6, r6, #8<<16 ; r6 = t[1]+8<<16
+ ; 0-3 butterfly
+ ADD r2, r4, r2, ASR #16 ; r2 = t2[0] = t[0] + t[3] + 8
+ SUB r4, r2, r4, LSL #1 ; r4 = t2[3] = t[0] - t[3] + 8
+ ; 1-2 butterfly
+ ADD r6, r3, r6, ASR #16 ; r6 = t2[1] = t[1] + t[2] + 8
+ SUB r3, r6, r3, LSL #1 ; r3 = t2[2] = t[1] - t[2] + 8
+ ; 6-5 butterfly
+ MOV r14,r14,ASR #16 ; r14= t2[5]
+ ADD r10,r14,r10,ASR #16 ; r10= t3[6] = t[6] + t[5]
+ SUB r14,r10,r14,LSL #1 ; r14= t3[5] = t[6] - t[5]
+ ; r2=t2[0] r3=t2[2] r4=t2[3] r6=t2[1] r8=t2[7] r9=t2[4]
+ ; r10=t3[6] r14=t3[5]
+ ; Stage 4
+ ADD r2, r2, r8 ; r2 = t[0] + t[7] + 8
+ ADD r6, r6, r10 ; r6 = t[1] + t[6] + 8
+ ADD r3, r3, r14 ; r3 = t[2] + t[5] + 8
+ ADD r4, r4, r9 ; r4 = t[3] + t[4] + 8
+ SUB r8, r2, r8, LSL #1 ; r8 = t[0] - t[7] + 8
+ SUB r10,r6, r10,LSL #1 ; r10= t[1] - t[6] + 8
+ SUB r14,r3, r14,LSL #1 ; r14= t[2] - t[5] + 8
+ SUB r9, r4, r9, LSL #1 ; r9 = t[3] - t[4] + 8
+ ; TODO: This is wrong.
+ ; The C code truncates to 16 bits by storing to RAM and doing the
+ ; shifts later; we've got an extra 4 bits here.
+ MOV r2, r2, ASR #4
+ MOV r6, r6, ASR #4
+ MOV r3, r3, ASR #4
+ MOV r4, r4, ASR #4
+ MOV r8, r8, ASR #4
+ MOV r10,r10,ASR #4
+ MOV r14,r14,ASR #4
+ MOV r9, r9, ASR #4
+ STRH r2, [r0], #2 ; y[0] = t[0]+t[7]
+ STRH r6, [r0, #14] ; y[1] = t[1]+t[6]
+ STRH r3, [r0, #30] ; y[2] = t[2]+t[5]
+ STRH r4, [r0, #46] ; y[3] = t[3]+t[4]
+ STRH r9, [r0, #62] ; y[4] = t[3]-t[4]
+ STRH r14,[r0, #78] ; y[5] = t[2]-t[5]
+ STRH r10,[r0, #94] ; y[6] = t[1]-t[6]
+ STRH r8, [r0, #110] ; y[7] = t[0]-t[7]
+ LDMFD r13!,{r1,PC}
+ ENDP
+
+ [ OC_ARM_ASM_MEDIA
+ EXPORT oc_idct8x8_1_v6
+ EXPORT oc_idct8x8_v6
+
+oc_idct8x8_1_v6 PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_uint16_t _dc
+ ORR r2, r1, r1, LSL #16
+ ORR r3, r1, r1, LSL #16
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ STRD r2, [r0], #8
+ MOV PC, r14
+ ENDP
+
+oc_idct8x8_v6 PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_int16_t *_x
+ ; r2 = int _last_zzi
+ CMP r2, #3
+ BLE oc_idct8x8_3_v6
+ ;CMP r2, #6
+ ;BLE oc_idct8x8_6_v6
+ CMP r2, #10
+ BLE oc_idct8x8_10_v6
+oc_idct8x8_slow_v6
+ STMFD r13!,{r4-r11,r14}
+ SUB r13,r13,#64*2
+; Row transforms
+ STR r0, [r13,#-4]!
+ ADD r0, r13, #4 ; Write to temp storage.
+ BL idct8_8core_v6
+ BL idct8_8core_v6
+ BL idct8_8core_v6
+ BL idct8_8core_v6
+ LDR r0, [r13], #4 ; Write to the final destination.
+ ; Clear input data for next block (decoder only).
+ SUB r2, r1, #8*16
+ CMP r0, r2
+ MOV r1, r13 ; And read from temp storage.
+ BEQ oc_idct8x8_slow_v6_cols
+ MOV r4, #0
+ MOV r5, #0
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+ STRD r4, [r2], #8
+oc_idct8x8_slow_v6_cols
+; Column transforms
+ BL idct8_8core_down_v6
+ BL idct8_8core_down_v6
+ BL idct8_8core_down_v6
+ BL idct8_8core_down_v6
+ ADD r13,r13,#64*2
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+
+oc_idct8x8_10_v6 PROC
+ STMFD r13!,{r4-r11,r14}
+ SUB r13,r13,#64*2+4
+; Row transforms
+ MOV r2, r13
+ STR r0, [r13,#-4]!
+ AND r0, r2, #4 ; Align the stack.
+ ADD r0, r0, r2 ; Write to temp storage.
+ BL idct4_3core_v6
+ BL idct2_1core_v6
+ LDR r0, [r13], #4 ; Write to the final destination.
+ ; Clear input data for next block (decoder only).
+ SUB r2, r1, #4*16
+ CMP r0, r2
+ AND r1, r13,#4 ; Align the stack.
+ BEQ oc_idct8x8_10_v6_cols
+ MOV r4, #0
+ MOV r5, #0
+ STRD r4, [r2]
+ STRD r4, [r2,#16]
+ STR r4, [r2,#32]
+ STR r4, [r2,#48]
+oc_idct8x8_10_v6_cols
+; Column transforms
+ ADD r1, r1, r13 ; And read from temp storage.
+ BL idct4_4core_down_v6
+ BL idct4_4core_down_v6
+ BL idct4_4core_down_v6
+ BL idct4_4core_down_v6
+ ADD r13,r13,#64*2+4
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+
+oc_idct8x8_3_v6 PROC
+ STMFD r13!,{r4-r8,r14}
+ SUB r13,r13,#64*2
+; Row transforms
+ MOV r8, r0
+ MOV r0, r13 ; Write to temp storage.
+ BL idct2_1core_v6
+ ; Clear input data for next block (decoder only).
+ SUB r0, r1, #2*16
+ CMP r0, r8
+ MOV r1, r13 ; Read from temp storage.
+ MOVNE r4, #0
+ STRNE r4, [r0]
+ STRNE r4, [r0,#16]
+ MOVNE r0, r8 ; Write to the final destination.
+; Column transforms
+ BL idct2_2core_down_v6
+ BL idct2_2core_down_v6
+ BL idct2_2core_down_v6
+ BL idct2_2core_down_v6
+ ADD r13,r13,#64*2
+ LDMFD r13!,{r4-r8,PC}
+ ENDP
+
+idct2_1core_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+; Stage 1:
+ LDR r2, [r1], #16 ; r2 = <x[0,1]|x[0,0]>
+ LDR r3, OC_C4S4
+ LDRSH r6, [r1], #16 ; r6 = x[1,0]
+ SMULWB r12,r3, r2 ; r12= t[0,0]=OC_C4S4*x[0,0]>>16
+ LDRD r4, OC_C7S1 ; r4 = OC_C7S1; r5 = OC_C1S7
+ SMULWB r6, r3, r6 ; r6 = t[1,0]=OC_C4S4*x[1,0]>>16
+ SMULWT r4, r4, r2 ; r4 = t[0,4]=OC_C7S1*x[0,1]>>16
+ SMULWT r7, r5, r2 ; r7 = t[0,7]=OC_C1S7*x[0,1]>>16
+; Stage 2:
+ SMULWB r5, r3, r4 ; r5 = t[0,5]=OC_C4S4*t[0,4]>>16
+ PKHBT r12,r12,r6, LSL #16 ; r12= <t[1,0]|t[0,0]>
+ SMULWB r6, r3, r7 ; r6 = t[0,6]=OC_C4S4*t[0,7]>>16
+ PKHBT r7, r7, r3 ; r7 = <0|t[0,7]>
+; Stage 3:
+ PKHBT r5, r6, r5, LSL #16 ; r5 = <t[0,5]|t[0,6]>
+ PKHBT r4, r4, r3 ; r4 = <0|t[0,4]>
+ SASX r5, r5, r5 ; r5 = <t[0,6]+t[0,5]|t[0,6]-t[0,5]>
+; Stage 4:
+ PKHTB r6, r3, r5, ASR #16 ; r6 = <0|t[0,6]>
+ PKHBT r5, r5, r3 ; r5 = <0|t[0,5]>
+ SADD16 r3, r12,r7 ; r3 = t[0]+t[7]
+ STR r3, [r0], #4 ; y[0<<3] = t[0]+t[7]
+ SADD16 r3, r12,r6 ; r3 = t[0]+t[6]
+ STR r3, [r0, #12] ; y[1<<3] = t[0]+t[6]
+ SADD16 r3, r12,r5 ; r3 = t[0]+t[5]
+ STR r3, [r0, #28] ; y[2<<3] = t[0]+t[5]
+ SADD16 r3, r12,r4 ; r3 = t[0]+t[4]
+ STR r3, [r0, #44] ; y[3<<3] = t[0]+t[4]
+ SSUB16 r4, r12,r4 ; r4 = t[0]-t[4]
+ STR r4, [r0, #60] ; y[4<<3] = t[0]-t[4]
+ SSUB16 r5, r12,r5 ; r5 = t[0]-t[5]
+ STR r5, [r0, #76] ; y[5<<3] = t[0]-t[5]
+ SSUB16 r6, r12,r6 ; r6 = t[0]-t[6]
+ STR r6, [r0, #92] ; y[6<<3] = t[0]-t[6]
+ SSUB16 r7, r12,r7 ; r7 = t[0]-t[7]
+ STR r7, [r0, #108] ; y[7<<3] = t[0]-t[7]
+ MOV PC,r14
+ ENDP
+ ]
+
+ ALIGN 8
+OC_C7S1
+ DCD 12785 ; 31F1
+OC_C1S7
+ DCD 64277 ; FB15
+OC_C6S2
+ DCD 25080 ; 61F8
+OC_C2S6
+ DCD 60547 ; EC83
+OC_C5S3
+ DCD 36410 ; 8E3A
+OC_C3S5
+ DCD 54491 ; D4DB
+OC_C4S4
+ DCD 46341 ; B505
+
+ [ OC_ARM_ASM_MEDIA
+idct2_2core_down_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+; Stage 1:
+ LDR r2, [r1], #16 ; r2 = <x[0,1]|x[0,0]>
+ LDR r3, OC_C4S4
+ MOV r7 ,#8 ; r7 = 8
+ LDR r6, [r1], #16 ; r6 = <x[1,1]|x[1,0]>
+ SMLAWB r12,r3, r2, r7 ; r12= (t[0,0]=OC_C4S4*x[0,0]>>16)+8
+ LDRD r4, OC_C7S1 ; r4 = OC_C7S1; r5 = OC_C1S7
+ SMLAWB r7, r3, r6, r7 ; r7 = (t[1,0]=OC_C4S4*x[1,0]>>16)+8
+ SMULWT r5, r5, r2 ; r2 = t[0,7]=OC_C1S7*x[0,1]>>16
+ PKHBT r12,r12,r7, LSL #16 ; r12= <t[1,0]+8|t[0,0]+8>
+ SMULWT r4, r4, r2 ; r4 = t[0,4]=OC_C7S1*x[0,1]>>16
+; Here we cheat: row 1 had just a DC, so x[0,1]==x[1,1] by definition.
+ PKHBT r7, r5, r5, LSL #16 ; r7 = <t[0,7]|t[0,7]>
+; Stage 2:
+ SMULWB r6, r3, r7 ; r6 = t[0,6]=OC_C4S4*t[0,7]>>16
+ PKHBT r4, r4, r4, LSL #16 ; r4 = <t[0,4]|t[0,4]>
+ SMULWT r2, r3, r7 ; r2 = t[1,6]=OC_C4S4*t[1,7]>>16
+ SMULWB r5, r3, r4 ; r5 = t[0,5]=OC_C4S4*t[0,4]>>16
+ PKHBT r6, r6, r2, LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWT r2, r3, r4 ; r2 = t[1,5]=OC_C4S4*t[1,4]>>16
+ PKHBT r2, r5, r2, LSL #16 ; r2 = <t[1,5]|t[0,5]>
+; Stage 3:
+ SSUB16 r5, r6, r2 ; r5 = <t[1,6]-t[1,5]|t[0,6]-t[0,5]>
+ SADD16 r6, r6, r2 ; r6 = <t[1,6]+t[1,5]|t[0,6]+t[0,5]>
+; Stage 4:
+ SADD16 r2, r12,r7 ; r2 = t[0]+t[7]+8
+ MOV r3, r2, ASR #4
+ MOV r2, r2, LSL #16
+ PKHTB r3, r3, r2, ASR #20 ; r3 = t[0]+t[7]+8>>4
+ STR r3, [r0], #4 ; y[0<<3] = t[0]+t[7]+8>>4
+ SADD16 r2, r12,r6 ; r2 = t[0]+t[6]+8
+ MOV r3, r2, ASR #4
+ MOV r2, r2, LSL #16
+ PKHTB r3, r3, r2, ASR #20 ; r3 = t[0]+t[6]+8>>4
+ STR r3, [r0, #12] ; y[1<<3] = t[0]+t[6]+8>>4
+ SADD16 r2, r12,r5 ; r2 = t[0]+t[5]+8
+ MOV r3, r2, ASR #4
+ MOV r2, r2, LSL #16
+ PKHTB r3, r3, r2, ASR #20 ; r3 = t[0]+t[5]+8>>4
+ STR r3, [r0, #28] ; y[2<<3] = t[0]+t[5]+8>>4
+ SADD16 r2, r12,r4 ; r2 = t[0]+t[4]+8
+ MOV r3, r2, ASR #4
+ MOV r2, r2, LSL #16
+ PKHTB r3, r3, r2, ASR #20 ; r3 = t[0]+t[4]+8>>4
+ STR r3, [r0, #44] ; y[3<<3] = t[0]+t[4]+8>>4
+ SSUB16 r4, r12,r4 ; r4 = t[0]-t[4]+8
+ MOV r3, r4, ASR #4
+ MOV r4, r4, LSL #16
+ PKHTB r3, r3, r4, ASR #20 ; r3 = t[0]-t[4]+8>>4
+ STR r3, [r0, #60] ; y[4<<3] = t[0]-t[4]+8>>4
+ SSUB16 r5, r12,r5 ; r5 = t[0]-t[5]+8
+ MOV r3, r5, ASR #4
+ MOV r5, r5, LSL #16
+ PKHTB r3, r3, r5, ASR #20 ; r3 = t[0]-t[5]+8>>4
+ STR r3, [r0, #76] ; y[5<<3] = t[0]-t[5]+8>>4
+ SSUB16 r6, r12,r6 ; r6 = t[0]-t[6]+8
+ MOV r3, r6, ASR #4
+ MOV r6, r6, LSL #16
+ PKHTB r3, r3, r6, ASR #20 ; r3 = t[0]-t[6]+8>>4
+ STR r3, [r0, #92] ; y[6<<3] = t[0]-t[6]+8>>4
+ SSUB16 r7, r12,r7 ; r7 = t[0]-t[7]+8
+ MOV r3, r7, ASR #4
+ MOV r7, r7, LSL #16
+ PKHTB r3, r3, r7, ASR #20 ; r3 = t[0]-t[7]+8>>4
+ STR r3, [r0, #108] ; y[7<<3] = t[0]-t[7]+8>>4
+ MOV PC,r14
+ ENDP
+
+; In theory this should save ~75 cycles over oc_idct8x8_10, more than enough to
+; pay for increased branch mis-prediction to get here, but in practice it
+; doesn't seem to slow anything down to take it out, and it's less code this
+; way.
+ [ 0
+oc_idct8x8_6_v6 PROC
+ STMFD r13!,{r4-r8,r10,r11,r14}
+ SUB r13,r13,#64*2+4
+; Row transforms
+ MOV r8, r0
+ AND r0, r13,#4 ; Align the stack.
+ ADD r0, r0, r13 ; Write to temp storage.
+ BL idct3_2core_v6
+ BL idct1core_v6
+ ; Clear input data for next block (decoder only).
+ SUB r0, r1, #3*16
+ CMP r0, r8
+ AND r1, r13,#4 ; Align the stack.
+ BEQ oc_idct8x8_6_v6_cols
+ MOV r4, #0
+ MOV r5, #0
+ STRD r4, [r0]
+ STR r4, [r0,#16]
+ STR r4, [r0,#32]
+ MOV r0, r8 ; Write to the final destination.
+oc_idct8x8_6_v6_cols
+; Column transforms
+ ADD r1, r1, r13 ; And read from temp storage.
+ BL idct3_3core_down_v6
+ BL idct3_3core_down_v6
+ BL idct3_3core_down_v6
+ BL idct3_3core_down_v6
+ ADD r13,r13,#64*2+4
+ LDMFD r13!,{r4-r8,r10,r11,PC}
+ ENDP
+
+idct1core_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+ LDRSH r3, [r1], #16
+ MOV r12,#0x05
+ ORR r12,r12,#0xB500
+ MUL r3, r12, r3
+ ; Stall ?
+ MOV r3, r3, ASR #16
+ ; Don't need to actually store the odd lines; they won't be read.
+ STRH r3, [r0], #2
+ STRH r3, [r0, #30]
+ STRH r3, [r0, #62]
+ STRH r3, [r0, #94]
+ MOV PC,R14
+ ENDP
+
+idct3_2core_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+; Stage 1:
+ LDRD r4, [r1], #16 ; r4 = <x[0,1]|x[0,0]>; r5 = <*|x[0,2]>
+ LDRD r10,OC_C6S2_3_v6 ; r10= OC_C6S2; r11= OC_C2S6
+ ; Stall
+ SMULWB r3, r11,r5 ; r3 = t[0,3]=OC_C2S6*x[0,2]>>16
+ LDR r11,OC_C4S4
+ SMULWB r2, r10,r5 ; r2 = t[0,2]=OC_C6S2*x[0,2]>>16
+ LDR r5, [r1], #16 ; r5 = <x[1,1]|x[1,0]>
+ SMULWB r12,r11,r4 ; r12= (t[0,0]=OC_C4S4*x[0,0]>>16)
+ LDRD r6, OC_C7S1_3_v6 ; r6 = OC_C7S1; r7 = OC_C1S7
+ SMULWB r10,r11,r5 ; r10= (t[1,0]=OC_C4S4*x[1,0]>>16)
+ PKHBT r12,r12,r10,LSL #16 ; r12= <t[1,0]|t[0,0]>
+ SMULWT r10,r7, r5 ; r10= t[1,7]=OC_C1S7*x[1,1]>>16
+ PKHBT r2, r2, r11 ; r2 = <0|t[0,2]>
+ SMULWT r7, r7, r4 ; r7 = t[0,7]=OC_C1S7*x[0,1]>>16
+ PKHBT r3, r3, r11 ; r3 = <0|t[0,3]>
+ SMULWT r5, r6, r5 ; r10= t[1,4]=OC_C7S1*x[1,1]>>16
+ PKHBT r7, r7, r10,LSL #16 ; r7 = <t[1,7]|t[0,7]>
+ SMULWT r4, r6, r4 ; r4 = t[0,4]=OC_C7S1*x[0,1]>>16
+; Stage 2:
+ SMULWB r6, r11,r7 ; r6 = t[0,6]=OC_C4S4*t[0,7]>>16
+ PKHBT r4, r4, r5, LSL #16 ; r4 = <t[1,4]|t[0,4]>
+ SMULWT r10,r11,r7 ; r10= t[1,6]=OC_C4S4*t[1,7]>>16
+ SMULWB r5, r11,r4 ; r5 = t[0,5]=OC_C4S4*t[0,4]>>16
+ PKHBT r6, r6, r10,LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWT r10,r11,r4 ; r10= t[1,5]=OC_C4S4*t[1,4]>>16
+; Stage 3:
+ B idct4_3core_stage3_v6
+ ENDP
+
+; Another copy so the LDRD offsets are less than +/- 255.
+ ALIGN 8
+OC_C7S1_3_v6
+ DCD 12785 ; 31F1
+OC_C1S7_3_v6
+ DCD 64277 ; FB15
+OC_C6S2_3_v6
+ DCD 25080 ; 61F8
+OC_C2S6_3_v6
+ DCD 60547 ; EC83
+
+idct3_3core_down_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+; Stage 1:
+ LDRD r10,[r1], #16 ; r10= <x[0,1]|x[0,0]>; r11= <??|x[0,2]>
+ LDRD r6, OC_C6S2_3_v6 ; r6 = OC_C6S2; r7 = OC_C2S6
+ LDR r4, [r1], #16 ; r4 = <x[1,1]|x[1,0]>
+ SMULWB r3, r7, r11 ; r3 = t[0,3]=OC_C2S6*x[0,2]>>16
+ MOV r7,#8
+ SMULWB r2, r6, r11 ; r2 = t[0,2]=OC_C6S2*x[0,2]>>16
+ LDR r11,OC_C4S4
+ SMLAWB r12,r11,r10,r7 ; r12= t[0,0]+8=(OC_C4S4*x[0,0]>>16)+8
+; Here we cheat: row 2 had just a DC, so x[0,2]==x[1,2] by definition.
+ PKHBT r3, r3, r3, LSL #16 ; r3 = <t[0,3]|t[0,3]>
+ SMLAWB r5, r11,r4, r7 ; r5 = t[1,0]+8=(OC_C4S4*x[1,0]>>16)+8
+ PKHBT r2, r2, r2, LSL #16 ; r2 = <t[0,2]|t[0,2]>
+ LDRD r6, OC_C7S1_3_v6 ; r6 = OC_C7S1; r7 = OC_C1S7
+ PKHBT r12,r12,r5, LSL #16 ; r12= <t[1,0]+8|t[0,0]+8>
+ SMULWT r5, r7, r4 ; r5 = t[1,7]=OC_C1S7*x[1,1]>>16
+ SMULWT r7, r7, r10 ; r7 = t[0,7]=OC_C1S7*x[0,1]>>16
+ SMULWT r10,r6, r10 ; r10= t[0,4]=OC_C7S1*x[0,1]>>16
+ PKHBT r7, r7, r5, LSL #16 ; r7 = <t[1,7]|t[0,7]>
+ SMULWT r4, r6, r4 ; r4 = t[1,4]=OC_C7S1*x[1,1]>>16
+; Stage 2:
+ SMULWB r6, r11,r7 ; r6 = t[0,6]=OC_C4S4*t[0,7]>>16
+ PKHBT r4, r10,r4, LSL #16 ; r4 = <t[1,4]|t[0,4]>
+ SMULWT r10,r11,r7 ; r10= t[1,6]=OC_C4S4*t[1,7]>>16
+ SMULWB r5, r11,r4 ; r5 = t[0,5]=OC_C4S4*t[0,4]>>16
+ PKHBT r6, r6, r10,LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWT r10,r11,r4 ; r10= t[1,5]=OC_C4S4*t[1,4]>>16
+; Stage 3:
+ B idct4_4core_down_stage3_v6
+ ENDP
+ ]
+
+idct4_3core_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+; Stage 1:
+ LDRD r10,[r1], #16 ; r10= <x[0,1]|x[0,0]>; r11= <x[0,3]|x[0,2]>
+ LDRD r2, OC_C5S3_4_v6 ; r2 = OC_C5S3; r3 = OC_C3S5
+ LDRD r4, [r1], #16 ; r4 = <x[1,1]|x[1,0]>; r5 = <??|x[1,2]>
+ SMULWT r9, r3, r11 ; r9 = t[0,6]=OC_C3S5*x[0,3]>>16
+ SMULWT r8, r2, r11 ; r8 = -t[0,5]=OC_C5S3*x[0,3]>>16
+ PKHBT r9, r9, r2 ; r9 = <0|t[0,6]>
+ LDRD r6, OC_C6S2_4_v6 ; r6 = OC_C6S2; r7 = OC_C2S6
+ PKHBT r8, r8, r2 ; r9 = <0|-t[0,5]>
+ SMULWB r3, r7, r11 ; r3 = t[0,3]=OC_C2S6*x[0,2]>>16
+ SMULWB r2, r6, r11 ; r2 = t[0,2]=OC_C6S2*x[0,2]>>16
+ LDR r11,OC_C4S4
+ SMULWB r12,r7, r5 ; r12= t[1,3]=OC_C2S6*x[1,2]>>16
+ SMULWB r5, r6, r5 ; r5 = t[1,2]=OC_C6S2*x[1,2]>>16
+ PKHBT r3, r3, r12,LSL #16 ; r3 = <t[1,3]|t[0,3]>
+ SMULWB r12,r11,r10 ; r12= t[0,0]=OC_C4S4*x[0,0]>>16
+ PKHBT r2, r2, r5, LSL #16 ; r2 = <t[1,2]|t[0,2]>
+ SMULWB r5, r11,r4 ; r5 = t[1,0]=OC_C4S4*x[1,0]>>16
+ LDRD r6, OC_C7S1_4_v6 ; r6 = OC_C7S1; r7 = OC_C1S7
+ PKHBT r12,r12,r5, LSL #16 ; r12= <t[1,0]|t[0,0]>
+ SMULWT r5, r7, r4 ; r5 = t[1,7]=OC_C1S7*x[1,1]>>16
+ SMULWT r7, r7, r10 ; r7 = t[0,7]=OC_C1S7*x[0,1]>>16
+ SMULWT r10,r6, r10 ; r10= t[0,4]=OC_C7S1*x[0,1]>>16
+ PKHBT r7, r7, r5, LSL #16 ; r7 = <t[1,7]|t[0,7]>
+ SMULWT r4, r6, r4 ; r4 = t[1,4]=OC_C7S1*x[1,1]>>16
+; Stage 2:
+ SSUB16 r6, r7, r9 ; r6 = t[7]-t[6]
+ PKHBT r4, r10,r4, LSL #16 ; r4 = <t[1,4]|t[0,4]>
+ SADD16 r7, r7, r9 ; r7 = t[7]=t[7]+t[6]
+ SMULWT r9, r11,r6 ; r9 = t[1,6]=OC_C4S4*r6T>>16
+ SADD16 r5, r4, r8 ; r5 = t[4]-t[5]
+ SMULWB r6, r11,r6 ; r6 = t[0,6]=OC_C4S4*r6B>>16
+ SSUB16 r4, r4, r8 ; r4 = t[4]=t[4]+t[5]
+ SMULWT r10,r11,r5 ; r10= t[1,5]=OC_C4S4*r5T>>16
+ PKHBT r6, r6, r9, LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWB r5, r11,r5 ; r5 = t[0,5]=OC_C4S4*r5B>>16
+; Stage 3:
+idct4_3core_stage3_v6
+ SADD16 r11,r12,r2 ; r11= t[1]=t[0]+t[2]
+ PKHBT r10,r5, r10,LSL #16 ; r10= <t[1,5]|t[0,5]>
+ SSUB16 r2, r12,r2 ; r2 = t[2]=t[0]-t[2]
+idct4_3core_stage3_5_v6
+ SSUB16 r5, r6, r10 ; r5 = t[5]'=t[6]-t[5]
+ SADD16 r6, r6, r10 ; r6 = t[6]=t[6]+t[5]
+ SADD16 r10,r12,r3 ; r10= t[0]'=t[0]+t[3]
+ SSUB16 r3, r12,r3 ; r3 = t[3]=t[0]-t[3]
+; Stage 4:
+ SADD16 r12,r10,r7 ; r12= t[0]+t[7]
+ STR r12,[r0], #4 ; y[0<<3] = t[0]+t[7]
+ SADD16 r12,r11,r6 ; r12= t[1]+t[6]
+ STR r12,[r0, #12] ; y[1<<3] = t[1]+t[6]
+ SADD16 r12,r2, r5 ; r12= t[2]+t[5]
+ STR r12,[r0, #28] ; y[2<<3] = t[2]+t[5]
+ SADD16 r12,r3, r4 ; r12= t[3]+t[4]
+ STR r12,[r0, #44] ; y[3<<3] = t[3]+t[4]
+ SSUB16 r4, r3, r4 ; r4 = t[3]-t[4]
+ STR r4, [r0, #60] ; y[4<<3] = t[3]-t[4]
+ SSUB16 r5, r2, r5 ; r5 = t[2]-t[5]
+ STR r5, [r0, #76] ; y[5<<3] = t[2]-t[5]
+ SSUB16 r6, r11,r6 ; r6 = t[1]-t[6]
+ STR r6, [r0, #92] ; y[6<<3] = t[1]-t[6]
+ SSUB16 r7, r10,r7 ; r7 = t[0]-t[7]
+ STR r7, [r0, #108] ; y[7<<3] = t[0]-t[7]
+ MOV PC,r14
+ ENDP
+
+; Another copy so the LDRD offsets are less than +/- 255.
+ ALIGN 8
+OC_C7S1_4_v6
+ DCD 12785 ; 31F1
+OC_C1S7_4_v6
+ DCD 64277 ; FB15
+OC_C6S2_4_v6
+ DCD 25080 ; 61F8
+OC_C2S6_4_v6
+ DCD 60547 ; EC83
+OC_C5S3_4_v6
+ DCD 36410 ; 8E3A
+OC_C3S5_4_v6
+ DCD 54491 ; D4DB
+
+idct4_4core_down_v6 PROC
+ ; r0 = ogg_int16_t *_y (destination)
+ ; r1 = const ogg_int16_t *_x (source)
+; Stage 1:
+ LDRD r10,[r1], #16 ; r10= <x[0,1]|x[0,0]>; r11= <x[0,3]|x[0,2]>
+ LDRD r2, OC_C5S3_4_v6 ; r2 = OC_C5S3; r3 = OC_C3S5
+ LDRD r4, [r1], #16 ; r4 = <x[1,1]|x[1,0]>; r5 = <x[1,3]|x[1,2]>
+ SMULWT r9, r3, r11 ; r9 = t[0,6]=OC_C3S5*x[0,3]>>16
+ LDRD r6, OC_C6S2_4_v6 ; r6 = OC_C6S2; r7 = OC_C2S6
+ SMULWT r8, r2, r11 ; r8 = -t[0,5]=OC_C5S3*x[0,3]>>16
+; Here we cheat: row 3 had just a DC, so x[0,3]==x[1,3] by definition.
+ PKHBT r9, r9, r9, LSL #16 ; r9 = <t[0,6]|t[0,6]>
+ SMULWB r3, r7, r11 ; r3 = t[0,3]=OC_C2S6*x[0,2]>>16
+ PKHBT r8, r8, r8, LSL #16 ; r8 = <-t[0,5]|-t[0,5]>
+ SMULWB r2, r6, r11 ; r2 = t[0,2]=OC_C6S2*x[0,2]>>16
+ LDR r11,OC_C4S4
+ SMULWB r12,r7, r5 ; r12= t[1,3]=OC_C2S6*x[1,2]>>16
+ MOV r7,#8
+ SMULWB r5, r6, r5 ; r5 = t[1,2]=OC_C6S2*x[1,2]>>16
+ PKHBT r3, r3, r12,LSL #16 ; r3 = <t[1,3]|t[0,3]>
+ SMLAWB r12,r11,r10,r7 ; r12= t[0,0]+8=(OC_C4S4*x[0,0]>>16)+8
+ PKHBT r2, r2, r5, LSL #16 ; r2 = <t[1,2]|t[0,2]>
+ SMLAWB r5, r11,r4 ,r7 ; r5 = t[1,0]+8=(OC_C4S4*x[1,0]>>16)+8
+ LDRD r6, OC_C7S1_4_v6 ; r6 = OC_C7S1; r7 = OC_C1S7
+ PKHBT r12,r12,r5, LSL #16 ; r12= <t[1,0]+8|t[0,0]+8>
+ SMULWT r5, r7, r4 ; r5 = t[1,7]=OC_C1S7*x[1,1]>>16
+ SMULWT r7, r7, r10 ; r7 = t[0,7]=OC_C1S7*x[0,1]>>16
+ SMULWT r10,r6, r10 ; r10= t[0,4]=OC_C7S1*x[0,1]>>16
+ PKHBT r7, r7, r5, LSL #16 ; r7 = <t[1,7]|t[0,7]>
+ SMULWT r4, r6, r4 ; r4 = t[1,4]=OC_C7S1*x[1,1]>>16
+; Stage 2:
+ SSUB16 r6, r7, r9 ; r6 = t[7]-t[6]
+ PKHBT r4, r10,r4, LSL #16 ; r4 = <t[1,4]|t[0,4]>
+ SADD16 r7, r7, r9 ; r7 = t[7]=t[7]+t[6]
+ SMULWT r9, r11,r6 ; r9 = t[1,6]=OC_C4S4*r6T>>16
+ SADD16 r5, r4, r8 ; r5 = t[4]-t[5]
+ SMULWB r6, r11,r6 ; r6 = t[0,6]=OC_C4S4*r6B>>16
+ SSUB16 r4, r4, r8 ; r4 = t[4]=t[4]+t[5]
+ SMULWT r10,r11,r5 ; r10= t[1,5]=OC_C4S4*r5T>>16
+ PKHBT r6, r6, r9, LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWB r5, r11,r5 ; r5 = t[0,5]=OC_C4S4*r5B>>16
+; Stage 3:
+idct4_4core_down_stage3_v6
+ SADD16 r11,r12,r2 ; r11= t[1]+8=t[0]+t[2]+8
+ PKHBT r10,r5, r10,LSL #16 ; r10= <t[1,5]|t[0,5]>
+ SSUB16 r2, r12,r2 ; r2 = t[2]+8=t[0]-t[2]+8
+ B idct8_8core_down_stage3_5_v6
+ ENDP
+
+idct8_8core_v6 PROC
+ STMFD r13!,{r0,r14}
+; Stage 1:
+ ;5-6 rotation by 3pi/16
+ LDRD r10,OC_C5S3_4_v6 ; r10= OC_C5S3, r11= OC_C3S5
+ LDR r4, [r1,#8] ; r4 = <x[0,5]|x[0,4]>
+ LDR r7, [r1,#24] ; r7 = <x[1,5]|x[1,4]>
+ SMULWT r5, r11,r4 ; r5 = OC_C3S5*x[0,5]>>16
+ LDR r0, [r1,#4] ; r0 = <x[0,3]|x[0,2]>
+ SMULWT r3, r11,r7 ; r3 = OC_C3S5*x[1,5]>>16
+ LDR r12,[r1,#20] ; r12= <x[1,3]|x[1,2]>
+ SMULWT r6, r11,r0 ; r6 = OC_C3S5*x[0,3]>>16
+ SMULWT r11,r11,r12 ; r11= OC_C3S5*x[1,3]>>16
+ SMLAWT r6, r10,r4, r6 ; r6 = t[0,6]=r6+(OC_C5S3*x[0,5]>>16)
+ PKHBT r5, r5, r3, LSL #16 ; r5 = <r3|r5>
+ SMLAWT r11,r10,r7, r11 ; r11= t[1,6]=r11+(OC_C5S3*x[1,5]>>16)
+ PKHBT r4, r4, r7, LSL #16 ; r4 = <x[1,4]|x[0,4]>
+ SMULWT r3, r10,r0 ; r3 = OC_C5S3*x[0,3]>>16
+ PKHBT r6, r6, r11,LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWT r8, r10,r12 ; r8 = OC_C5S3*x[1,3]>>16
+ ;2-3 rotation by 6pi/16
+ LDRD r10,OC_C6S2_4_v6 ; r10= OC_C6S2, r11= OC_C2S6
+ PKHBT r3, r3, r8, LSL #16 ; r3 = <r8|r3>
+ LDR r8, [r1,#12] ; r8 = <x[0,7]|x[0,6]>
+ SMULWB r2, r10,r0 ; r2 = OC_C6S2*x[0,2]>>16
+ SSUB16 r5, r5, r3 ; r5 = <t[1,5]|t[0,5]>
+ SMULWB r9, r10,r12 ; r9 = OC_C6S2*x[1,2]>>16
+ LDR r7, [r1,#28] ; r7 = <x[1,7]|x[1,6]>
+ SMULWB r3, r10,r8 ; r3 = OC_C6S2*x[0,6]>>16
+ SMULWB r10,r10,r7 ; r10= OC_C6S2*x[1,6]>>16
+ PKHBT r2, r2, r9, LSL #16 ; r2 = <r2|r9>
+ SMLAWB r3, r11,r0, r3 ; r3 = t[0,3]=r3+(OC_C2S6*x[0,2]>>16)
+ SMLAWB r10,r11,r12,r10 ; r10= t[1,3]=r10+(OC_C2S6*x[1,2]>>16)
+ SMULWB r9, r11,r8 ; r9 = OC_C2S6*x[0,6]>>16
+ PKHBT r3, r3, r10,LSL #16 ; r3 = <t[1,6]|t[0,6]>
+ SMULWB r12,r11,r7 ; r12= OC_C2S6*x[1,6]>>16
+ ;4-7 rotation by 7pi/16
+ LDRD r10,OC_C7S1_8_v6 ; r10= OC_C7S1, r11= OC_C1S7
+ PKHBT r9, r9, r12,LSL #16 ; r9 = <r9|r12>
+ LDR r0, [r1],#16 ; r0 = <x[0,1]|x[0,0]>
+ PKHTB r7, r7, r8, ASR #16 ; r7 = <x[1,7]|x[0,7]>
+ SSUB16 r2, r2, r9 ; r2 = <t[1,2]|t[0,2]>
+ SMULWB r9, r10,r7 ; r9 = OC_C7S1*x[0,7]>>16
+ LDR r14,[r1],#16 ; r14= <x[1,1]|x[1,0]>
+ SMULWT r12,r10,r7 ; r12= OC_C7S1*x[1,7]>>16
+ SMULWT r8, r10,r0 ; r8 = OC_C7S1*x[0,1]>>16
+ SMULWT r10,r10,r14 ; r10= OC_C7S1*x[1,1]>>16
+ SMLAWT r9, r11,r0, r9 ; r9 = t[0,7]=r9+(OC_C1S7*x[0,1]>>16)
+ PKHBT r8, r8, r10,LSL #16 ; r8 = <r12|r8>
+ SMLAWT r12,r11,r14,r12 ; r12= t[1,7]=r12+(OC_C1S7*x[1,1]>>16)
+ PKHBT r0, r0, r14,LSL #16 ; r0 = <x[1,0]|x[0,0]>
+ SMULWB r10,r11,r7 ; r10= OC_C1S7*x[0,6]>>16
+ PKHBT r9, r9, r12,LSL #16 ; r9 = <t[1,7]|t[0,7]>
+ SMULWT r12,r11,r7 ; r12= OC_C1S7*x[1,6]>>16
+ ;0-1 butterfly
+ LDR r11,OC_C4S4
+ PKHBT r10,r10,r12,LSL #16 ; r10= <r12|r10>
+ SADD16 r7, r0, r4 ; r7 = x[0]+x[4]
+ SSUB16 r10,r8, r10 ; r10= <t[1,4]|t[0,4]>
+ SSUB16 r4, r0, r4 ; r4 = x[0]-x[4]
+ SMULWB r8, r11,r7 ; r8 = t[0,0]=OC_C4S4*r7B>>16
+ SMULWT r12,r11,r7 ; r12= t[1,0]=OC_C4S4*r7T>>16
+ SMULWB r7, r11,r4 ; r7 = t[0,1]=OC_C4S4*r4B>>16
+ PKHBT r12,r8, r12,LSL #16 ; r12= <t[1,0]|t[0,0]>
+ SMULWT r8, r11,r4 ; r8 = t[1,1]=OC_C4S4*r4T>>16
+; Stage 2:
+ SADD16 r4, r10,r5 ; r4 = t[4]'=t[4]+t[5]
+ PKHBT r8, r7, r8, LSL #16 ; r8 = <t[1,0]|t[0,0]>
+ SSUB16 r5, r10,r5 ; r5 = t[4]-t[5]
+ SMULWB r10,r11,r5 ; r10= t[0,5]=OC_C4S4*r5B>>16
+ SADD16 r7, r9, r6 ; r7 = t[7]'=t[7]+t[6]
+ SMULWT r5, r11,r5 ; r5 = t[1,5]=OC_C4S4*r5T>>16
+ SSUB16 r6, r9, r6 ; r6 = t[7]-t[6]
+ SMULWB r9, r11,r6 ; r9 = t[0,6]=OC_C4S4*r6B>>16
+ PKHBT r10,r10,r5, LSL #16 ; r10= <t[1,5]|t[0,5]>
+ SMULWT r6, r11,r6 ; r6 = t[1,6]=OC_C4S4*r6T>>16
+; Stage 3:
+ SADD16 r11,r8, r2 ; r11= t[1]'=t[1]+t[2]
+ PKHBT r6, r9, r6, LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SSUB16 r2, r8, r2 ; r2 = t[2]=t[1]-t[2]
+ LDMFD r13!,{r0,r14}
+ B idct4_3core_stage3_5_v6
+ ENDP
+
+; Another copy so the LDRD offsets are less than +/- 255.
+ ALIGN 8
+OC_C7S1_8_v6
+ DCD 12785 ; 31F1
+OC_C1S7_8_v6
+ DCD 64277 ; FB15
+OC_C6S2_8_v6
+ DCD 25080 ; 61F8
+OC_C2S6_8_v6
+ DCD 60547 ; EC83
+OC_C5S3_8_v6
+ DCD 36410 ; 8E3A
+OC_C3S5_8_v6
+ DCD 54491 ; D4DB
+
+idct8_8core_down_v6 PROC
+ STMFD r13!,{r0,r14}
+; Stage 1:
+ ;5-6 rotation by 3pi/16
+ LDRD r10,OC_C5S3_8_v6 ; r10= OC_C5S3, r11= OC_C3S5
+ LDR r4, [r1,#8] ; r4 = <x[0,5]|x[0,4]>
+ LDR r7, [r1,#24] ; r7 = <x[1,5]|x[1,4]>
+ SMULWT r5, r11,r4 ; r5 = OC_C3S5*x[0,5]>>16
+ LDR r0, [r1,#4] ; r0 = <x[0,3]|x[0,2]>
+ SMULWT r3, r11,r7 ; r3 = OC_C3S5*x[1,5]>>16
+ LDR r12,[r1,#20] ; r12= <x[1,3]|x[1,2]>
+ SMULWT r6, r11,r0 ; r6 = OC_C3S5*x[0,3]>>16
+ SMULWT r11,r11,r12 ; r11= OC_C3S5*x[1,3]>>16
+ SMLAWT r6, r10,r4, r6 ; r6 = t[0,6]=r6+(OC_C5S3*x[0,5]>>16)
+ PKHBT r5, r5, r3, LSL #16 ; r5 = <r3|r5>
+ SMLAWT r11,r10,r7, r11 ; r11= t[1,6]=r11+(OC_C5S3*x[1,5]>>16)
+ PKHBT r4, r4, r7, LSL #16 ; r4 = <x[1,4]|x[0,4]>
+ SMULWT r3, r10,r0 ; r3 = OC_C5S3*x[0,3]>>16
+ PKHBT r6, r6, r11,LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SMULWT r8, r10,r12 ; r8 = OC_C5S3*x[1,3]>>16
+ ;2-3 rotation by 6pi/16
+ LDRD r10,OC_C6S2_8_v6 ; r10= OC_C6S2, r11= OC_C2S6
+ PKHBT r3, r3, r8, LSL #16 ; r3 = <r8|r3>
+ LDR r8, [r1,#12] ; r8 = <x[0,7]|x[0,6]>
+ SMULWB r2, r10,r0 ; r2 = OC_C6S2*x[0,2]>>16
+ SSUB16 r5, r5, r3 ; r5 = <t[1,5]|t[0,5]>
+ SMULWB r9, r10,r12 ; r9 = OC_C6S2*x[1,2]>>16
+ LDR r7, [r1,#28] ; r7 = <x[1,7]|x[1,6]>
+ SMULWB r3, r10,r8 ; r3 = OC_C6S2*x[0,6]>>16
+ SMULWB r10,r10,r7 ; r10= OC_C6S2*x[1,6]>>16
+ PKHBT r2, r2, r9, LSL #16 ; r2 = <r2|r9>
+ SMLAWB r3, r11,r0, r3 ; r3 = t[0,3]=r3+(OC_C2S6*x[0,2]>>16)
+ SMLAWB r10,r11,r12,r10 ; r10= t[1,3]=r10+(OC_C2S6*x[1,2]>>16)
+ SMULWB r9, r11,r8 ; r9 = OC_C2S6*x[0,6]>>16
+ PKHBT r3, r3, r10,LSL #16 ; r3 = <t[1,6]|t[0,6]>
+ SMULWB r12,r11,r7 ; r12= OC_C2S6*x[1,6]>>16
+ ;4-7 rotation by 7pi/16
+ LDRD r10,OC_C7S1_8_v6 ; r10= OC_C7S1, r11= OC_C1S7
+ PKHBT r9, r9, r12,LSL #16 ; r9 = <r9|r12>
+ LDR r0, [r1],#16 ; r0 = <x[0,1]|x[0,0]>
+ PKHTB r7, r7, r8, ASR #16 ; r7 = <x[1,7]|x[0,7]>
+ SSUB16 r2, r2, r9 ; r2 = <t[1,2]|t[0,2]>
+ SMULWB r9, r10,r7 ; r9 = OC_C7S1*x[0,7]>>16
+ LDR r14,[r1],#16 ; r14= <x[1,1]|x[1,0]>
+ SMULWT r12,r10,r7 ; r12= OC_C7S1*x[1,7]>>16
+ SMULWT r8, r10,r0 ; r8 = OC_C7S1*x[0,1]>>16
+ SMULWT r10,r10,r14 ; r10= OC_C7S1*x[1,1]>>16
+ SMLAWT r9, r11,r0, r9 ; r9 = t[0,7]=r9+(OC_C1S7*x[0,1]>>16)
+ PKHBT r8, r8, r10,LSL #16 ; r8 = <r12|r8>
+ SMLAWT r12,r11,r14,r12 ; r12= t[1,7]=r12+(OC_C1S7*x[1,1]>>16)
+ PKHBT r0, r0, r14,LSL #16 ; r0 = <x[1,0]|x[0,0]>
+ SMULWB r10,r11,r7 ; r10= OC_C1S7*x[0,6]>>16
+ PKHBT r9, r9, r12,LSL #16 ; r9 = <t[1,7]|t[0,7]>
+ SMULWT r12,r11,r7 ; r12= OC_C1S7*x[1,6]>>16
+ ;0-1 butterfly
+ LDR r11,OC_C4S4
+ MOV r14,#8
+ PKHBT r10,r10,r12,LSL #16 ; r10= <r12|r10>
+ SADD16 r7, r0, r4 ; r7 = x[0]+x[4]
+ SSUB16 r10,r8, r10 ; r10= <t[1,4]|t[0,4]>
+ SMLAWB r8, r11,r7, r14 ; r8 = t[0,0]+8=(OC_C4S4*r7B>>16)+8
+ SSUB16 r4, r0, r4 ; r4 = x[0]-x[4]
+ SMLAWT r12,r11,r7, r14 ; r12= t[1,0]+8=(OC_C4S4*r7T>>16)+8
+ SMLAWB r7, r11,r4, r14 ; r7 = t[0,1]+8=(OC_C4S4*r4B>>16)+8
+ PKHBT r12,r8, r12,LSL #16 ; r12= <t[1,0]+8|t[0,0]+8>
+ SMLAWT r8, r11,r4, r14 ; r8 = t[1,1]+8=(OC_C4S4*r4T>>16)+8
+; Stage 2:
+ SADD16 r4, r10,r5 ; r4 = t[4]'=t[4]+t[5]
+ PKHBT r8, r7, r8, LSL #16 ; r8 = <t[1,0]+8|t[0,0]+8>
+ SSUB16 r5, r10,r5 ; r5 = t[4]-t[5]
+ SMULWB r10,r11,r5 ; r10= t[0,5]=OC_C4S4*r5B>>16
+ SADD16 r7, r9, r6 ; r7 = t[7]'=t[7]+t[6]
+ SMULWT r5, r11,r5 ; r5 = t[1,5]=OC_C4S4*r5T>>16
+ SSUB16 r6, r9, r6 ; r6 = t[7]-t[6]
+ SMULWB r9, r11,r6 ; r9 = t[0,6]=OC_C4S4*r6B>>16
+ PKHBT r10,r10,r5, LSL #16 ; r10= <t[1,5]|t[0,5]>
+ SMULWT r6, r11,r6 ; r6 = t[1,6]=OC_C4S4*r6T>>16
+; Stage 3:
+ SADD16 r11,r8, r2 ; r11= t[1]'+8=t[1]+t[2]+8
+ PKHBT r6, r9, r6, LSL #16 ; r6 = <t[1,6]|t[0,6]>
+ SSUB16 r2, r8, r2 ; r2 = t[2]+8=t[1]-t[2]+8
+ LDMFD r13!,{r0,r14}
+idct8_8core_down_stage3_5_v6
+ SSUB16 r5, r6, r10 ; r5 = t[5]'=t[6]-t[5]
+ SADD16 r6, r6, r10 ; r6 = t[6]=t[6]+t[5]
+ SADD16 r10,r12,r3 ; r10= t[0]'+8=t[0]+t[3]+8
+ SSUB16 r3, r12,r3 ; r3 = t[3]+8=t[0]-t[3]+8
+; Stage 4:
+ SADD16 r12,r10,r7 ; r12= t[0]+t[7]+8
+ SSUB16 r7, r10,r7 ; r7 = t[0]-t[7]+8
+ MOV r10,r12,ASR #4
+ MOV r12,r12,LSL #16
+ PKHTB r10,r10,r12,ASR #20 ; r10= t[0]+t[7]+8>>4
+ STR r10,[r0], #4 ; y[0<<3] = t[0]+t[7]+8>>4
+ SADD16 r12,r11,r6 ; r12= t[1]+t[6]+8
+ SSUB16 r6, r11,r6 ; r6 = t[1]-t[6]+8
+ MOV r10,r12,ASR #4
+ MOV r12,r12,LSL #16
+ PKHTB r10,r10,r12,ASR #20 ; r10= t[1]+t[6]+8>>4
+ STR r10,[r0, #12] ; y[1<<3] = t[1]+t[6]+8>>4
+ SADD16 r12,r2, r5 ; r12= t[2]+t[5]+8
+ SSUB16 r5, r2, r5 ; r5 = t[2]-t[5]+8
+ MOV r10,r12,ASR #4
+ MOV r12,r12,LSL #16
+ PKHTB r10,r10,r12,ASR #20 ; r10= t[2]+t[5]+8>>4
+ STR r10,[r0, #28] ; y[2<<3] = t[2]+t[5]+8>>4
+ SADD16 r12,r3, r4 ; r12= t[3]+t[4]+8
+ SSUB16 r4, r3, r4 ; r4 = t[3]-t[4]+8
+ MOV r10,r12,ASR #4
+ MOV r12,r12,LSL #16
+ PKHTB r10,r10,r12,ASR #20 ; r10= t[3]+t[4]+8>>4
+ STR r10,[r0, #44] ; y[3<<3] = t[3]+t[4]+8>>4
+ MOV r10,r4, ASR #4
+ MOV r4, r4, LSL #16
+ PKHTB r10,r10,r4, ASR #20 ; r10= t[3]-t[4]+8>>4
+ STR r10,[r0, #60] ; y[4<<3] = t[3]-t[4]+8>>4
+ MOV r10,r5, ASR #4
+ MOV r5, r5, LSL #16
+ PKHTB r10,r10,r5, ASR #20 ; r10= t[2]-t[5]+8>>4
+ STR r10,[r0, #76] ; y[5<<3] = t[2]-t[5]+8>>4
+ MOV r10,r6, ASR #4
+ MOV r6, r6, LSL #16
+ PKHTB r10,r10,r6, ASR #20 ; r10= t[1]-t[6]+8>>4
+ STR r10,[r0, #92] ; y[6<<3] = t[1]-t[6]+8>>4
+ MOV r10,r7, ASR #4
+ MOV r7, r7, LSL #16
+ PKHTB r10,r10,r7, ASR #20 ; r10= t[0]-t[7]+8>>4
+ STR r10,[r0, #108] ; y[7<<3] = t[0]-t[7]+8>>4
+ MOV PC,r14
+ ENDP
+ ]
+
+ [ OC_ARM_ASM_NEON
+ EXPORT oc_idct8x8_1_neon
+ EXPORT oc_idct8x8_neon
+
+ ALIGN 16
+OC_IDCT_CONSTS_NEON
+ DCW 8
+ DCW 64277 ; FB15 (C1S7)
+ DCW 60547 ; EC83 (C2S6)
+ DCW 54491 ; D4DB (C3S5)
+ DCW 46341 ; B505 (C4S4)
+ DCW 36410 ; 471D (C5S3)
+ DCW 25080 ; 30FC (C6S2)
+ DCW 12785 ; 31F1 (C7S1)
+
+oc_idct8x8_1_neon PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_uint16_t _dc
+ VDUP.S16 Q0, r1
+ VMOV Q1, Q0
+ VST1.64 {D0, D1, D2, D3}, [r0@128]!
+ VST1.64 {D0, D1, D2, D3}, [r0@128]!
+ VST1.64 {D0, D1, D2, D3}, [r0@128]!
+ VST1.64 {D0, D1, D2, D3}, [r0@128]
+ MOV PC, r14
+ ENDP
+
+oc_idct8x8_neon PROC
+ ; r0 = ogg_int16_t *_y
+ ; r1 = ogg_int16_t *_x
+ ; r2 = int _last_zzi
+ CMP r2, #10
+ BLE oc_idct8x8_10_neon
+oc_idct8x8_slow_neon
+ VPUSH {D8-D15}
+ MOV r2, r1
+ ADR r3, OC_IDCT_CONSTS_NEON
+ ; Row transforms (input is pre-transposed)
+ VLD1.64 {D16,D17,D18,D19}, [r2@128]!
+ VLD1.64 {D20,D21,D22,D23}, [r2@128]!
+ VLD1.64 {D24,D25,D26,D27}, [r2@128]!
+ VSUB.S16 Q1, Q8, Q12 ; Q8 = x[0]-x[4]
+ VLD1.64 {D28,D29,D30,D31}, [r2@128]
+ VADD.S16 Q8, Q8, Q12 ; Q1 = x[0]+x[4]
+ VLD1.64 {D0,D1}, [r3@128]
+ MOV r12, r14
+ BL oc_idct8x8_stage123_neon
+; Stage 4
+ VSUB.S16 Q15,Q8, Q7 ; Q15 = y[7]=t[0]'-t[7]'
+ VADD.S16 Q8, Q8, Q7 ; Q8 = y[0]=t[0]'+t[7]'
+ VSUB.S16 Q14,Q9, Q3 ; Q14 = y[6]=t[1]'-t[6]''
+ VADD.S16 Q9, Q9, Q3 ; Q9 = y[1]=t[1]'+t[6]''
+ VSUB.S16 Q13,Q10,Q5 ; Q13 = y[5]=t[2]'-t[5]''
+ VADD.S16 Q10,Q10,Q5 ; Q10 = y[2]=t[2]'+t[5]''
+ VTRN.16 Q14,Q15
+ VSUB.S16 Q12,Q11,Q4 ; Q12 = y[4]=t[3]'-t[4]'
+ VADD.S16 Q11,Q11,Q4 ; Q11 = y[3]=t[3]'+t[4]'
+ ; 8x8 Transpose
+ VTRN.16 Q8, Q9
+ VTRN.16 Q10,Q11
+ VTRN.16 Q12,Q13
+ VTRN.32 Q8, Q10
+ VTRN.32 Q9, Q11
+ VTRN.32 Q12,Q14
+ VTRN.32 Q13,Q15
+ VSWP D17,D24
+ VSUB.S16 Q1, Q8, Q12 ; Q8 = x[0]-x[4]
+ VSWP D19,D26
+ VADD.S16 Q8, Q8, Q12 ; Q1 = x[0]+x[4]
+ VSWP D21,D28
+ VSWP D23,D30
+ ; Column transforms
+ BL oc_idct8x8_stage123_neon
+ CMP r0,r1
+ ; We have to put the return address back in the LR, or the branch
+ ; predictor will not recognize the function return and mis-predict the
+ ; entire call stack.
+ MOV r14, r12
+; Stage 4
+ VSUB.S16 Q15,Q8, Q7 ; Q15 = y[7]=t[0]'-t[7]'
+ VADD.S16 Q8, Q8, Q7 ; Q8 = y[0]=t[0]'+t[7]'
+ VSUB.S16 Q14,Q9, Q3 ; Q14 = y[6]=t[1]'-t[6]''
+ VADD.S16 Q9, Q9, Q3 ; Q9 = y[1]=t[1]'+t[6]''
+ VSUB.S16 Q13,Q10,Q5 ; Q13 = y[5]=t[2]'-t[5]''
+ VADD.S16 Q10,Q10,Q5 ; Q10 = y[2]=t[2]'+t[5]''
+ VSUB.S16 Q12,Q11,Q4 ; Q12 = y[4]=t[3]'-t[4]'
+ VADD.S16 Q11,Q11,Q4 ; Q11 = y[3]=t[3]'+t[4]'
+ BEQ oc_idct8x8_slow_neon_noclear
+ VMOV.I8 Q2,#0
+ VPOP {D8-D15}
+ VMOV.I8 Q3,#0
+ VRSHR.S16 Q8, Q8, #4 ; Q8 = y[0]+8>>4
+ VST1.64 {D4, D5, D6, D7}, [r1@128]!
+ VRSHR.S16 Q9, Q9, #4 ; Q9 = y[1]+8>>4
+ VRSHR.S16 Q10,Q10,#4 ; Q10 = y[2]+8>>4
+ VST1.64 {D4, D5, D6, D7}, [r1@128]!
+ VRSHR.S16 Q11,Q11,#4 ; Q11 = y[3]+8>>4
+ VRSHR.S16 Q12,Q12,#4 ; Q12 = y[4]+8>>4
+ VST1.64 {D4, D5, D6, D7}, [r1@128]!
+ VRSHR.S16 Q13,Q13,#4 ; Q13 = y[5]+8>>4
+ VRSHR.S16 Q14,Q14,#4 ; Q14 = y[6]+8>>4
+ VST1.64 {D4, D5, D6, D7}, [r1@128]
+ VRSHR.S16 Q15,Q15,#4 ; Q15 = y[7]+8>>4
+ VSTMIA r0, {D16-D31}
+ MOV PC, r14
+
+oc_idct8x8_slow_neon_noclear
+ VPOP {D8-D15}
+ VRSHR.S16 Q8, Q8, #4 ; Q8 = y[0]+8>>4
+ VRSHR.S16 Q9, Q9, #4 ; Q9 = y[1]+8>>4
+ VRSHR.S16 Q10,Q10,#4 ; Q10 = y[2]+8>>4
+ VRSHR.S16 Q11,Q11,#4 ; Q11 = y[3]+8>>4
+ VRSHR.S16 Q12,Q12,#4 ; Q12 = y[4]+8>>4
+ VRSHR.S16 Q13,Q13,#4 ; Q13 = y[5]+8>>4
+ VRSHR.S16 Q14,Q14,#4 ; Q14 = y[6]+8>>4
+ VRSHR.S16 Q15,Q15,#4 ; Q15 = y[7]+8>>4
+ VSTMIA r0, {D16-D31}
+ MOV PC, r14
+ ENDP
+
+oc_idct8x8_stage123_neon PROC
+; Stages 1 & 2
+ VMULL.S16 Q4, D18,D1[3]
+ VMULL.S16 Q5, D19,D1[3]
+ VMULL.S16 Q7, D30,D1[3]
+ VMULL.S16 Q6, D31,D1[3]
+ VMULL.S16 Q2, D30,D0[1]
+ VMULL.S16 Q3, D31,D0[1]
+ VSHRN.S32 D8, Q4, #16
+ VSHRN.S32 D9, Q5, #16 ; Q4 = (OC_C7S1*x[1]>>16)
+ VSHRN.S32 D14,Q7, #16
+ VSHRN.S32 D15,Q6, #16 ; Q7 = (OC_C7S1*x[7]>>16)
+ VSHRN.S32 D4, Q2, #16
+ VSHRN.S32 D5, Q3, #16 ; Q2 = (OC_C1S7*x[7]>>16)-x[7]
+ VSUB.S16 Q4, Q4, Q15
+ VADD.S16 Q7, Q7, Q9
+ VSUB.S16 Q4, Q4, Q2 ; Q4 = t[4]
+ VMULL.S16 Q2, D18,D0[1]
+ VMULL.S16 Q9, D19,D0[1]
+ VMULL.S16 Q5, D26,D0[3]
+ VMULL.S16 Q3, D27,D0[3]
+ VMULL.S16 Q6, D22,D0[3]
+ VMULL.S16 Q12,D23,D0[3]
+ VSHRN.S32 D4, Q2, #16
+ VSHRN.S32 D5, Q9, #16 ; Q2 = (OC_C1S7*x[1]>>16)-x[1]
+ VSHRN.S32 D10,Q5, #16
+ VSHRN.S32 D11,Q3, #16 ; Q5 = (OC_C3S5*x[5]>>16)-x[5]
+ VSHRN.S32 D12,Q6, #16
+ VSHRN.S32 D13,Q12,#16 ; Q6 = (OC_C3S5*x[3]>>16)-x[3]
+ VADD.S16 Q7, Q7, Q2 ; Q7 = t[7]
+ VSUB.S16 Q5, Q5, Q11
+ VADD.S16 Q6, Q6, Q11
+ VADD.S16 Q5, Q5, Q13
+ VADD.S16 Q6, Q6, Q13
+ VMULL.S16 Q9, D22,D1[1]
+ VMULL.S16 Q11,D23,D1[1]
+ VMULL.S16 Q15,D26,D1[1]
+ VMULL.S16 Q13,D27,D1[1]
+ VMULL.S16 Q2, D20,D1[2]
+ VMULL.S16 Q12,D21,D1[2]
+ VSHRN.S32 D18,Q9, #16
+ VSHRN.S32 D19,Q11,#16 ; Q9 = (OC_C5S3*x[3]>>16)-x[3]
+ VSHRN.S32 D30,Q15,#16
+ VSHRN.S32 D31,Q13,#16 ; Q15= (OC_C5S3*x[5]>>16)-x[5]
+ VSHRN.S32 D4, Q2, #16
+ VSHRN.S32 D5, Q12,#16 ; Q2 = (OC_C6S2*x[2]>>16)
+ VSUB.S16 Q5, Q5, Q9 ; Q5 = t[5]
+ VADD.S16 Q6, Q6, Q15 ; Q6 = t[6]
+ VSUB.S16 Q2, Q2, Q14
+ VMULL.S16 Q3, D28,D1[2]
+ VMULL.S16 Q11,D29,D1[2]
+ VMULL.S16 Q12,D28,D0[2]
+ VMULL.S16 Q9, D29,D0[2]
+ VMULL.S16 Q13,D20,D0[2]
+ VMULL.S16 Q15,D21,D0[2]
+ VSHRN.S32 D6, Q3, #16
+ VSHRN.S32 D7, Q11,#16 ; Q3 = (OC_C6S2*x[6]>>16)
+ VSHRN.S32 D24,Q12,#16
+ VSHRN.S32 D25,Q9, #16 ; Q12= (OC_C2S6*x[6]>>16)-x[6]
+ VSHRN.S32 D26,Q13,#16
+ VSHRN.S32 D27,Q15,#16 ; Q13= (OC_C2S6*x[2]>>16)-x[2]
+ VSUB.S16 Q9, Q4, Q5 ; Q9 = t[4]-t[5]
+ VSUB.S16 Q11,Q7, Q6 ; Q11= t[7]-t[6]
+ VADD.S16 Q3, Q3, Q10
+ VADD.S16 Q4, Q4, Q5 ; Q4 = t[4]'=t[4]+t[5]
+ VADD.S16 Q7, Q7, Q6 ; Q7 = t[7]'=t[7]+t[6]
+ VSUB.S16 Q2, Q2, Q12 ; Q2 = t[2]
+ VADD.S16 Q3, Q3, Q13 ; Q3 = t[3]
+ VMULL.S16 Q12,D16,D1[0]
+ VMULL.S16 Q13,D17,D1[0]
+ VMULL.S16 Q14,D2, D1[0]
+ VMULL.S16 Q15,D3, D1[0]
+ VMULL.S16 Q5, D18,D1[0]
+ VMULL.S16 Q6, D22,D1[0]
+ VSHRN.S32 D24,Q12,#16
+ VSHRN.S32 D25,Q13,#16
+ VSHRN.S32 D28,Q14,#16
+ VSHRN.S32 D29,Q15,#16
+ VMULL.S16 Q13,D19,D1[0]
+ VMULL.S16 Q15,D23,D1[0]
+ VADD.S16 Q8, Q8, Q12 ; Q8 = t[0]
+ VADD.S16 Q1, Q1, Q14 ; Q1 = t[1]
+ VSHRN.S32 D10,Q5, #16
+ VSHRN.S32 D12,Q6, #16
+ VSHRN.S32 D11,Q13,#16
+ VSHRN.S32 D13,Q15,#16
+ VADD.S16 Q5, Q5, Q9 ; Q5 = t[5]'=OC_C4S4*(t[4]-t[5])>>16
+ VADD.S16 Q6, Q6, Q11 ; Q6 = t[6]'=OC_C4S4*(t[7]-t[6])>>16
+; Stage 3
+ VSUB.S16 Q11,Q8, Q3 ; Q11 = t[3]''=t[0]-t[3]
+ VADD.S16 Q8, Q8, Q3 ; Q8 = t[0]''=t[0]+t[3]
+ VADD.S16 Q9, Q1, Q2 ; Q9 = t[1]''=t[1]+t[2]
+ VADD.S16 Q3, Q6, Q5 ; Q3 = t[6]''=t[6]'+t[5]'
+ VSUB.S16 Q10,Q1, Q2 ; Q10 = t[2]''=t[1]-t[2]
+ VSUB.S16 Q5, Q6, Q5 ; Q5 = t[5]''=t[6]'-t[5]'
+ MOV PC, r14
+ ENDP
+
+oc_idct8x8_10_neon PROC
+ ADR r3, OC_IDCT_CONSTS_NEON
+ VLD1.64 {D0,D1}, [r3@128]
+ MOV r2, r1
+ ; Row transforms (input is pre-transposed)
+; Stage 1
+ VLD1.64 {D16,D17,D18,D19},[r2@128]!
+ MOV r12, #16
+ VMULL.S16 Q15,D16,D1[0] ; Q15= OC_C4S4*x[0]-(x[0]<<16)
+ VLD1.64 {D17}, [r2@64], r12
+ VMULL.S16 Q2, D18,D0[1] ; Q2 = OC_C1S7*x[1]-(x[1]<<16)
+ VLD1.64 {D19}, [r2@64]
+ VMULL.S16 Q14,D17,D0[2] ; Q14= OC_C2S6*x[2]-(x[2]<<16)
+ VMULL.S16 Q3, D19,D0[3] ; Q3 = OC_C3S5*x[3]-(x[3]<<16)
+ VMULL.S16 Q13,D19,D1[1] ; Q13= OC_C5S3*x[3]-(x[3]<<16)
+ VMULL.S16 Q12,D18,D1[3] ; Q12= OC_C7S1*x[1]
+ VMULL.S16 Q1, D17,D1[2] ; Q1 = OC_C6S2*x[2]
+ VSHRN.S32 D30,Q15,#16 ; D30= t[0]-x[0]
+ VSHRN.S32 D4, Q2, #16 ; D4 = t[7]-x[1]
+ VSHRN.S32 D31,Q14,#16 ; D31= t[3]-x[2]
+ VSHRN.S32 D6, Q3, #16 ; D6 = t[6]-x[3]
+ VSHRN.S32 D7, Q13,#16 ; D7 = -t[5]-x[3]
+ VSHRN.S32 D5, Q12,#16 ; D5 = t[4]
+ VSHRN.S32 D2, Q1, #16 ; D2 = t[2]
+ VADD.S16 D4, D4, D18 ; D4 = t[7]
+ VADD.S16 D6, D6, D19 ; D6 = t[6]
+ VADD.S16 D7, D7, D19 ; D7 = -t[5]
+ VADD.S16 Q15,Q15,Q8 ; D30= t[0]
+ ; D31= t[3]
+; Stages 2 & 3
+ VSUB.S16 Q12,Q2, Q3 ; D24= t[7]-t[6]
+ ; D25= t[4]'=t[4]+t[5]
+ VADD.S16 Q13,Q2, Q3 ; D26= t[7]'=t[7]+t[6]
+ ; D27= t[4]-t[5]
+ VMULL.S16 Q11,D24,D1[0] ; Q11= OC_C4S4*(t[7]-t[6])
+ ; -(t[7]-t[6]<<16)
+ VMULL.S16 Q14,D27,D1[0] ; Q14= OC_C4S4*(t[4]-t[5])
+ ; -(t[4]-t[5]<<16)
+ VADD.S16 D16,D30,D31 ; D16= t[0]'=t[0]+t[3]
+ VSUB.S16 D17,D30,D2 ; D17= t[2]'=t[0]-t[2]
+ VADD.S16 D18,D30,D2 ; D18= t[1]'=t[0]+t[2]
+ VSHRN.S32 D22,Q11,#16 ; D22= (OC_C4S4*(t[7]-t[6])>>16)
+ ; -(t[7]-t[6])
+ VSHRN.S32 D23,Q14,#16 ; D23= (OC_C4S4*(t[4]-t[5])>>16)
+ ; -(t[4]-t[5])
+ VSUB.S16 D19,D30,D31 ; D19= t[3]'=t[0]-t[3]
+ VADD.S16 D22,D22,D24 ; D22= t[6]'=OC_C4S4*(t[7]-t[6])>>16
+ VADD.S16 D23,D23,D27 ; D23= t[5]'=OC_C4S4*(t[4]-t[5])>>16
+ VSUB.S16 D27,D22,D23 ; D27= t[5]''=t[6]'-t[5]'
+ VADD.S16 D24,D22,D23 ; D24= t[6]''=t[6]'+t[5]'
+; Stage 4
+ VSUB.S16 Q11,Q8, Q13 ; D22= y[7]=t[0]'-t[7]'
+ ; D23= y[5]=t[2]'-t[5]''
+ VSUB.S16 Q10,Q9, Q12 ; D20= y[6]=t[1]'-t[6]'
+ ; D21= y[4]=t[3]'-t[4]''
+ VADD.S16 Q8, Q8, Q13 ; D16= y[0]=t[0]'+t[7]'
+ ; D17= y[2]=t[2]'+t[5]''
+ VADD.S16 Q9, Q9, Q12 ; D18= y[1]=t[1]'-t[6]'
+ ; D19= y[3]=t[3]'-t[4]''
+ ; 8x4 transpose
+ VTRN.16 Q10,Q11 ; Q10= c5c4a5a4 c7c6a7a6
+ ; Q11= d5d4b5b4 d7d6b7b6
+ VTRN.16 Q8, Q9 ; Q8 = c3c2a3a2 c1c0a1a0
+ ; Q9 = d3d2b3b2 d1d0b1b0
+ VSWP D20,D21 ; Q10= c7c6a7a6 c5c4a5a4
+ VSWP D22,D23 ; Q11= d7d6b7b6 d5d4b5b4
+ VUZP.32 Q9, Q11 ; Q9 = b7b6b5b4 b3b2b1b0
+ ; Q11= d7d6d5d4 d3d2d1d0
+ VMULL.S16 Q15,D18,D0[1]
+ VMULL.S16 Q13,D22,D1[1]
+ VUZP.32 Q8, Q10 ; Q8 = a7a6a5a4 a3a2a1a0
+ ; Q10= c7c6c5c4 c3c2c1c0
+ ; Column transforms
+; Stages 1, 2, & 3
+ VMULL.S16 Q14,D19,D0[1] ; Q14:Q15= OC_C1S7*x[1]-(x[1]<<16)
+ VMULL.S16 Q12,D23,D1[1] ; Q12:Q13= OC_C5S3*x[3]-(x[3]<<16)
+ VMULL.S16 Q3, D22,D0[3]
+ VMULL.S16 Q2, D23,D0[3] ; Q2:Q3 = OC_C3S5*x[3]-(x[3]<<16)
+ VSHRN.S32 D30,Q15,#16
+ VSHRN.S32 D31,Q14,#16 ; Q15= (OC_C1S7*x[1]>>16)-x[1]
+ VSHRN.S32 D26,Q13,#16
+ VSHRN.S32 D27,Q12,#16 ; Q13= (OC_C5S3*x[3]>>16)-x[3]
+ VSHRN.S32 D28,Q3, #16
+ VSHRN.S32 D29,Q2, #16 ; Q14= (OC_C3S5*x[3]>>16)-x[3]
+ VADD.S16 Q15,Q15,Q9 ; Q15= t[7]
+ VADD.S16 Q13,Q13,Q11 ; Q13= -t[5]
+ VADD.S16 Q14,Q14,Q11 ; Q14= t[6]
+ VMULL.S16 Q12,D18,D1[3]
+ VMULL.S16 Q2, D19,D1[3] ; Q2:Q12= OC_C7S1*x[1]
+ VMULL.S16 Q1, D16,D1[0]
+ VMULL.S16 Q11,D17,D1[0] ; Q11:Q1 = OC_C4S4*x[0]-(x[0]<<16)
+ VMULL.S16 Q3, D20,D0[2]
+ VMULL.S16 Q9, D21,D0[2] ; Q9:Q3 = OC_C2S6*x[2]-(x[2]<<16)
+ VSHRN.S32 D24,Q12,#16
+ VSHRN.S32 D25,Q2, #16 ; Q12= t[4]
+ VMULL.S16 Q2, D20,D1[2]
+ VSHRN.S32 D2, Q1, #16
+ VSHRN.S32 D3, Q11,#16 ; Q1 = (OC_C4S4*x[0]>>16)-x[0]
+ VMULL.S16 Q11,D21,D1[2] ; Q2:Q11= OC_C6S2*x[2]
+ VSHRN.S32 D6, Q3, #16
+ VSHRN.S32 D7, Q9, #16 ; Q3 = (OC_C2S6*x[2]>>16)-x[2]
+ VSUB.S16 Q9, Q15,Q14 ; Q9 = t[7]-t[6]
+ VADD.S16 Q15,Q15,Q14 ; Q15= t[7]'=t[7]+t[6]
+ VSHRN.S32 D4, Q2, #16
+ VSHRN.S32 D5, Q11,#16 ; Q2 = t[2]
+ VADD.S16 Q1, Q1, Q8 ; Q1 = t[0]
+ VADD.S16 Q8, Q12,Q13 ; Q8 = t[4]-t[5]
+ VADD.S16 Q3, Q3, Q10 ; Q3 = t[3]
+ VMULL.S16 Q10,D16,D1[0]
+ VMULL.S16 Q11,D17,D1[0] ; Q11:Q10= OC_C4S4*(t[4]-t[5])
+ ; -(t[4]-t[5]<<16)
+ VSUB.S16 Q12,Q12,Q13 ; Q12= t[4]'=t[4]+t[5]
+ VMULL.S16 Q14,D18,D1[0]
+ VMULL.S16 Q13,D19,D1[0] ; Q13:Q14= OC_C4S4*(t[6]-t[7])
+ ; -(t[6]-t[7]<<16)
+ VSHRN.S32 D20,Q10,#16
+ VSHRN.S32 D21,Q11,#16 ; Q10= (OC_C4S4*(t[4]-t[5])>>16)
+ ; -(t[4]-t[5])
+ VADD.S16 Q11,Q1, Q3 ; Q11= t[0]'=t[0]+t[3]
+ VSUB.S16 Q3, Q1, Q3 ; Q3 = t[3]'=t[0]-t[3]
+ VSHRN.S32 D28,Q14,#16
+ VSHRN.S32 D29,Q13,#16 ; Q14= (OC_C4S4*(t[7]-t[6])>>16)
+ ; -(t[7]-t[6])
+ VADD.S16 Q10,Q10,Q8 ; Q10=t[5]'
+ VADD.S16 Q14,Q14,Q9 ; Q14=t[6]'
+ VSUB.S16 Q13,Q14,Q10 ; Q13=t[5]''=t[6]'-t[5]'
+ VADD.S16 Q14,Q14,Q10 ; Q14=t[6]''=t[6]'+t[5]'
+ VADD.S16 Q10,Q1, Q2 ; Q10= t[1]'=t[0]+t[2]
+ VSUB.S16 Q2, Q1, Q2 ; Q2 = t[2]'=t[0]-t[2]
+; Stage 4
+ CMP r0, r1
+ VADD.S16 Q8, Q11,Q15 ; Q8 = y[0]=t[0]'+t[7]'
+ VADD.S16 Q9, Q10,Q14 ; Q9 = y[1]=t[1]'+t[6]''
+ VSUB.S16 Q15,Q11,Q15 ; Q15 = y[7]=t[0]'-t[7]'
+ VSUB.S16 Q14,Q10,Q14 ; Q14 = y[6]=t[1]'-t[6]''
+ VADD.S16 Q10,Q2, Q13 ; Q10 = y[2]=t[2]'+t[5]''
+ VADD.S16 Q11,Q3, Q12 ; Q11 = y[3]=t[3]'+t[4]'
+ VSUB.S16 Q12,Q3, Q12 ; Q12 = y[4]=t[3]'-t[4]'
+ VSUB.S16 Q13,Q2, Q13 ; Q13 = y[5]=t[2]'-t[5]''
+ BEQ oc_idct8x8_10_neon_noclear
+ VMOV.I8 D2, #0
+ VRSHR.S16 Q8, Q8, #4 ; Q8 = y[0]+8>>4
+ VST1.64 {D2}, [r1@64], r12
+ VRSHR.S16 Q9, Q9, #4 ; Q9 = y[1]+8>>4
+ VRSHR.S16 Q10,Q10,#4 ; Q10 = y[2]+8>>4
+ VST1.64 {D2}, [r1@64], r12
+ VRSHR.S16 Q11,Q11,#4 ; Q11 = y[3]+8>>4
+ VRSHR.S16 Q12,Q12,#4 ; Q12 = y[4]+8>>4
+ VST1.64 {D2}, [r1@64], r12
+ VRSHR.S16 Q13,Q13,#4 ; Q13 = y[5]+8>>4
+ VRSHR.S16 Q14,Q14,#4 ; Q14 = y[6]+8>>4
+ VST1.64 {D2}, [r1@64]
+ VRSHR.S16 Q15,Q15,#4 ; Q15 = y[7]+8>>4
+ VSTMIA r0, {D16-D31}
+ MOV PC, r14
+
+oc_idct8x8_10_neon_noclear
+ VRSHR.S16 Q8, Q8, #4 ; Q8 = y[0]+8>>4
+ VRSHR.S16 Q9, Q9, #4 ; Q9 = y[1]+8>>4
+ VRSHR.S16 Q10,Q10,#4 ; Q10 = y[2]+8>>4
+ VRSHR.S16 Q11,Q11,#4 ; Q11 = y[3]+8>>4
+ VRSHR.S16 Q12,Q12,#4 ; Q12 = y[4]+8>>4
+ VRSHR.S16 Q13,Q13,#4 ; Q13 = y[5]+8>>4
+ VRSHR.S16 Q14,Q14,#4 ; Q14 = y[6]+8>>4
+ VRSHR.S16 Q15,Q15,#4 ; Q15 = y[7]+8>>4
+ VSTMIA r0, {D16-D31}
+ MOV PC, r14
+ ENDP
+ ]
+
+ END
diff --git a/media/libtheora/lib/arm/armint.h b/media/libtheora/lib/arm/armint.h
new file mode 100644
index 000000000..cc62d2438
--- /dev/null
+++ b/media/libtheora/lib/arm/armint.h
@@ -0,0 +1,126 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86int.h 17344 2010-07-21 01:42:18Z tterribe $
+
+ ********************************************************************/
+#if !defined(_arm_armint_H)
+# define _arm_armint_H (1)
+# include "../internal.h"
+
+# if defined(OC_ARM_ASM)
+
+# if defined(__ARMEB__)
+# error "Big-endian configurations are not supported by the ARM asm. " \
+ "Reconfigure with --disable-asm or undefine OC_ARM_ASM."
+# endif
+
+# define oc_state_accel_init oc_state_accel_init_arm
+/*This function is implemented entirely in asm, so it's helpful to pull out all
+ of the things that depend on structure offsets.
+ We reuse the function pointer with the wrong prototype, though.*/
+# define oc_state_loop_filter_frag_rows(_state,_bv,_refi,_pli, \
+ _fragy0,_fragy_end) \
+ ((oc_loop_filter_frag_rows_arm_func) \
+ (_state)->opt_vtable.state_loop_filter_frag_rows)( \
+ (_state)->ref_frame_data[(_refi)],(_state)->ref_ystride[(_pli)], \
+ (_bv), \
+ (_state)->frags, \
+ (_state)->fplanes[(_pli)].froffset \
+ +(_fragy0)*(ptrdiff_t)(_state)->fplanes[(_pli)].nhfrags, \
+ (_state)->fplanes[(_pli)].froffset \
+ +(_fragy_end)*(ptrdiff_t)(_state)->fplanes[(_pli)].nhfrags, \
+ (_state)->fplanes[(_pli)].froffset, \
+ (_state)->fplanes[(_pli)].froffset+(_state)->fplanes[(_pli)].nfrags, \
+ (_state)->frag_buf_offs, \
+ (_state)->fplanes[(_pli)].nhfrags)
+/*For everything else the default vtable macros are fine.*/
+# define OC_STATE_USE_VTABLE (1)
+# endif
+
+# include "../state.h"
+# include "armcpu.h"
+
+# if defined(OC_ARM_ASM)
+typedef void (*oc_loop_filter_frag_rows_arm_func)(
+ unsigned char *_ref_frame_data,int _ystride,signed char _bv[256],
+ const oc_fragment *_frags,ptrdiff_t _fragi0,ptrdiff_t _fragi0_end,
+ ptrdiff_t _fragi_top,ptrdiff_t _fragi_bot,
+ const ptrdiff_t *_frag_buf_offs,int _nhfrags);
+
+void oc_state_accel_init_arm(oc_theora_state *_state);
+void oc_frag_copy_list_arm(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+void oc_frag_recon_intra_arm(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue);
+void oc_frag_recon_inter_arm(unsigned char *_dst,const unsigned char *_src,
+ int _ystride,const ogg_int16_t *_residue);
+void oc_frag_recon_inter2_arm(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue);
+void oc_idct8x8_1_arm(ogg_int16_t _y[64],ogg_uint16_t _dc);
+void oc_idct8x8_arm(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_state_frag_recon_arm(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+void oc_loop_filter_frag_rows_arm(unsigned char *_ref_frame_data,
+ int _ystride,signed char *_bv,const oc_fragment *_frags,ptrdiff_t _fragi0,
+ ptrdiff_t _fragi0_end,ptrdiff_t _fragi_top,ptrdiff_t _fragi_bot,
+ const ptrdiff_t *_frag_buf_offs,int _nhfrags);
+
+# if defined(OC_ARM_ASM_EDSP)
+void oc_frag_copy_list_edsp(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+
+# if defined(OC_ARM_ASM_MEDIA)
+void oc_frag_recon_intra_v6(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue);
+void oc_frag_recon_inter_v6(unsigned char *_dst,const unsigned char *_src,
+ int _ystride,const ogg_int16_t *_residue);
+void oc_frag_recon_inter2_v6(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue);
+void oc_idct8x8_1_v6(ogg_int16_t _y[64],ogg_uint16_t _dc);
+void oc_idct8x8_v6(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_state_frag_recon_v6(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+void oc_loop_filter_init_v6(signed char *_bv,int _flimit);
+void oc_loop_filter_frag_rows_v6(unsigned char *_ref_frame_data,
+ int _ystride,signed char *_bv,const oc_fragment *_frags,ptrdiff_t _fragi0,
+ ptrdiff_t _fragi0_end,ptrdiff_t _fragi_top,ptrdiff_t _fragi_bot,
+ const ptrdiff_t *_frag_buf_offs,int _nhfrags);
+
+# if defined(OC_ARM_ASM_NEON)
+void oc_frag_copy_list_neon(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+void oc_frag_recon_intra_neon(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue);
+void oc_frag_recon_inter_neon(unsigned char *_dst,const unsigned char *_src,
+ int _ystride,const ogg_int16_t *_residue);
+void oc_frag_recon_inter2_neon(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue);
+void oc_idct8x8_1_neon(ogg_int16_t _y[64],ogg_uint16_t _dc);
+void oc_idct8x8_neon(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_state_frag_recon_neon(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+void oc_loop_filter_init_neon(signed char *_bv,int _flimit);
+void oc_loop_filter_frag_rows_neon(unsigned char *_ref_frame_data,
+ int _ystride,signed char *_bv,const oc_fragment *_frags,ptrdiff_t _fragi0,
+ ptrdiff_t _fragi0_end,ptrdiff_t _fragi_top,ptrdiff_t _fragi_bot,
+ const ptrdiff_t *_frag_buf_offs,int _nhfrags);
+# endif
+# endif
+# endif
+# endif
+
+#endif
diff --git a/media/libtheora/lib/arm/armloop.s b/media/libtheora/lib/arm/armloop.s
new file mode 100644
index 000000000..0a1d4705e
--- /dev/null
+++ b/media/libtheora/lib/arm/armloop.s
@@ -0,0 +1,682 @@
+;********************************************************************
+;* *
+;* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+;* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+;* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+;* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+;* *
+;* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+;* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+;* *
+;********************************************************************
+; Original implementation:
+; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+; last mod: $Id: armloop.s 17481 2010-10-03 22:49:42Z tterribe $
+;********************************************************************
+
+ AREA |.text|, CODE, READONLY
+
+ ; Explicitly specifying alignment here because some versions of
+ ; gas don't align code correctly. See
+ ; http://lists.gnu.org/archive/html/bug-binutils/2011-06/msg00199.html
+ ; https://bugzilla.mozilla.org/show_bug.cgi?id=920992
+ ALIGN
+
+ GET armopts.s
+
+ EXPORT oc_loop_filter_frag_rows_arm
+
+; Which bit this is depends on the order of packing within a bitfield.
+; Hopefully that doesn't change among any of the relevant compilers.
+OC_FRAG_CODED_FLAG * 1
+
+ ; Vanilla ARM v4 version
+loop_filter_h_arm PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int *_bv
+ ; preserves r0-r3
+ STMFD r13!,{r3-r6,r14}
+ MOV r14,#8
+ MOV r6, #255
+lfh_arm_lp
+ LDRB r3, [r0, #-2] ; r3 = _pix[0]
+ LDRB r12,[r0, #1] ; r12= _pix[3]
+ LDRB r4, [r0, #-1] ; r4 = _pix[1]
+ LDRB r5, [r0] ; r5 = _pix[2]
+ SUB r3, r3, r12 ; r3 = _pix[0]-_pix[3]+4
+ ADD r3, r3, #4
+ SUB r12,r5, r4 ; r12= _pix[2]-_pix[1]
+ ADD r12,r12,r12,LSL #1 ; r12= 3*(_pix[2]-_pix[1])
+ ADD r12,r12,r3 ; r12= _pix[0]-_pix[3]+3*(_pix[2]-_pix[1])+4
+ MOV r12,r12,ASR #3
+ LDRSB r12,[r2, r12]
+ ; Stall (2 on Xscale)
+ ADDS r4, r4, r12
+ CMPGT r6, r4
+ EORLT r4, r6, r4, ASR #32
+ SUBS r5, r5, r12
+ CMPGT r6, r5
+ EORLT r5, r6, r5, ASR #32
+ STRB r4, [r0, #-1]
+ STRB r5, [r0], r1
+ SUBS r14,r14,#1
+ BGT lfh_arm_lp
+ SUB r0, r0, r1, LSL #3
+ LDMFD r13!,{r3-r6,PC}
+ ENDP
+
+loop_filter_v_arm PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int *_bv
+ ; preserves r0-r3
+ STMFD r13!,{r3-r6,r14}
+ MOV r14,#8
+ MOV r6, #255
+lfv_arm_lp
+ LDRB r3, [r0, -r1, LSL #1] ; r3 = _pix[0]
+ LDRB r12,[r0, r1] ; r12= _pix[3]
+ LDRB r4, [r0, -r1] ; r4 = _pix[1]
+ LDRB r5, [r0] ; r5 = _pix[2]
+ SUB r3, r3, r12 ; r3 = _pix[0]-_pix[3]+4
+ ADD r3, r3, #4
+ SUB r12,r5, r4 ; r12= _pix[2]-_pix[1]
+ ADD r12,r12,r12,LSL #1 ; r12= 3*(_pix[2]-_pix[1])
+ ADD r12,r12,r3 ; r12= _pix[0]-_pix[3]+3*(_pix[2]-_pix[1])+4
+ MOV r12,r12,ASR #3
+ LDRSB r12,[r2, r12]
+ ; Stall (2 on Xscale)
+ ADDS r4, r4, r12
+ CMPGT r6, r4
+ EORLT r4, r6, r4, ASR #32
+ SUBS r5, r5, r12
+ CMPGT r6, r5
+ EORLT r5, r6, r5, ASR #32
+ STRB r4, [r0, -r1]
+ STRB r5, [r0], #1
+ SUBS r14,r14,#1
+ BGT lfv_arm_lp
+ SUB r0, r0, #8
+ LDMFD r13!,{r3-r6,PC}
+ ENDP
+
+oc_loop_filter_frag_rows_arm PROC
+ ; r0 = _ref_frame_data
+ ; r1 = _ystride
+ ; r2 = _bv
+ ; r3 = _frags
+ ; r4 = _fragi0
+ ; r5 = _fragi0_end
+ ; r6 = _fragi_top
+ ; r7 = _fragi_bot
+ ; r8 = _frag_buf_offs
+ ; r9 = _nhfrags
+ MOV r12,r13
+ STMFD r13!,{r0,r4-r11,r14}
+ LDMFD r12,{r4-r9}
+ ADD r2, r2, #127 ; _bv += 127
+ CMP r4, r5 ; if(_fragi0>=_fragi0_end)
+ BGE oslffri_arm_end ; bail
+ SUBS r9, r9, #1 ; r9 = _nhfrags-1 if (r9<=0)
+ BLE oslffri_arm_end ; bail
+ ADD r3, r3, r4, LSL #2 ; r3 = &_frags[fragi]
+ ADD r8, r8, r4, LSL #2 ; r8 = &_frag_buf_offs[fragi]
+ SUB r7, r7, r9 ; _fragi_bot -= _nhfrags;
+oslffri_arm_lp1
+ MOV r10,r4 ; r10= fragi = _fragi0
+ ADD r11,r4, r9 ; r11= fragi_end-1=fragi+_nhfrags-1
+oslffri_arm_lp2
+ LDR r14,[r3], #4 ; r14= _frags[fragi] _frags++
+ LDR r0, [r13] ; r0 = _ref_frame_data
+ LDR r12,[r8], #4 ; r12= _frag_buf_offs[fragi] _frag_buf_offs++
+ TST r14,#OC_FRAG_CODED_FLAG
+ BEQ oslffri_arm_uncoded
+ CMP r10,r4 ; if (fragi>_fragi0)
+ ADD r0, r0, r12 ; r0 = _ref_frame_data + _frag_buf_offs[fragi]
+ BLGT loop_filter_h_arm
+ CMP r4, r6 ; if (_fragi0>_fragi_top)
+ BLGT loop_filter_v_arm
+ CMP r10,r11 ; if(fragi+1<fragi_end)===(fragi<fragi_end-1)
+ LDRLT r12,[r3] ; r12 = _frags[fragi+1]
+ ADD r0, r0, #8
+ ADD r10,r10,#1 ; r10 = fragi+1;
+ ANDLT r12,r12,#OC_FRAG_CODED_FLAG
+ CMPLT r12,#OC_FRAG_CODED_FLAG ; && _frags[fragi+1].coded==0
+ BLLT loop_filter_h_arm
+ CMP r10,r7 ; if (fragi<_fragi_bot)
+ LDRLT r12,[r3, r9, LSL #2] ; r12 = _frags[fragi+1+_nhfrags-1]
+ SUB r0, r0, #8
+ ADD r0, r0, r1, LSL #3
+ ANDLT r12,r12,#OC_FRAG_CODED_FLAG
+ CMPLT r12,#OC_FRAG_CODED_FLAG
+ BLLT loop_filter_v_arm
+ CMP r10,r11 ; while(fragi<=fragi_end-1)
+ BLE oslffri_arm_lp2
+ MOV r4, r10 ; r4 = fragi0 += _nhfrags
+ CMP r4, r5
+ BLT oslffri_arm_lp1
+oslffri_arm_end
+ LDMFD r13!,{r0,r4-r11,PC}
+oslffri_arm_uncoded
+ ADD r10,r10,#1
+ CMP r10,r11
+ BLE oslffri_arm_lp2
+ MOV r4, r10 ; r4 = _fragi0 += _nhfrags
+ CMP r4, r5
+ BLT oslffri_arm_lp1
+ LDMFD r13!,{r0,r4-r11,PC}
+ ENDP
+
+ [ OC_ARM_ASM_MEDIA
+ EXPORT oc_loop_filter_init_v6
+ EXPORT oc_loop_filter_frag_rows_v6
+
+oc_loop_filter_init_v6 PROC
+ ; r0 = _bv
+ ; r1 = _flimit (=L from the spec)
+ MVN r1, r1, LSL #1 ; r1 = <0xFFFFFF|255-2*L>
+ AND r1, r1, #255 ; r1 = ll=r1&0xFF
+ ORR r1, r1, r1, LSL #8 ; r1 = <ll|ll>
+ PKHBT r1, r1, r1, LSL #16 ; r1 = <ll|ll|ll|ll>
+ STR r1, [r0]
+ MOV PC,r14
+ ENDP
+
+; We could use the same strategy as the v filter below, but that would require
+; 40 instructions to load the data and transpose it into columns and another
+; 32 to write out the results at the end, plus the 52 instructions to do the
+; filtering itself.
+; This is slightly less, and less code, even assuming we could have shared the
+; 52 instructions in the middle with the other function.
+; It executes slightly fewer instructions than the ARMv6 approach David Conrad
+; proposed for FFmpeg, but not by much:
+; http://lists.mplayerhq.hu/pipermail/ffmpeg-devel/2010-February/083141.html
+; His is a lot less code, though, because it only does two rows at once instead
+; of four.
+loop_filter_h_v6 PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int _ll
+ ; preserves r0-r3
+ STMFD r13!,{r4-r11,r14}
+ LDR r12,=0x10003
+ BL loop_filter_h_core_v6
+ ADD r0, r0, r1, LSL #2
+ BL loop_filter_h_core_v6
+ SUB r0, r0, r1, LSL #2
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+
+loop_filter_h_core_v6 PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int _ll
+ ; r12= 0x10003
+ ; Preserves r0-r3, r12; Clobbers r4-r11.
+ LDR r4,[r0, #-2]! ; r4 = <p3|p2|p1|p0>
+ ; Single issue
+ LDR r5,[r0, r1]! ; r5 = <q3|q2|q1|q0>
+ UXTB16 r6, r4, ROR #16 ; r6 = <p0|p2>
+ UXTB16 r4, r4, ROR #8 ; r4 = <p3|p1>
+ UXTB16 r7, r5, ROR #16 ; r7 = <q0|q2>
+ UXTB16 r5, r5, ROR #8 ; r5 = <q3|q1>
+ PKHBT r8, r4, r5, LSL #16 ; r8 = <__|q1|__|p1>
+ PKHBT r9, r6, r7, LSL #16 ; r9 = <__|q2|__|p2>
+ SSUB16 r6, r4, r6 ; r6 = <p3-p0|p1-p2>
+ SMLAD r6, r6, r12,r12 ; r6 = <????|(p3-p0)+3*(p1-p2)+3>
+ SSUB16 r7, r5, r7 ; r7 = <q3-q0|q1-q2>
+ SMLAD r7, r7, r12,r12 ; r7 = <????|(q0-q3)+3*(q2-q1)+4>
+ LDR r4,[r0, r1]! ; r4 = <r3|r2|r1|r0>
+ MOV r6, r6, ASR #3 ; r6 = <??????|(p3-p0)+3*(p1-p2)+3>>3>
+ LDR r5,[r0, r1]! ; r5 = <s3|s2|s1|s0>
+ PKHBT r11,r6, r7, LSL #13 ; r11= <??|-R_q|??|-R_p>
+ UXTB16 r6, r4, ROR #16 ; r6 = <r0|r2>
+ UXTB16 r11,r11 ; r11= <__|-R_q|__|-R_p>
+ UXTB16 r4, r4, ROR #8 ; r4 = <r3|r1>
+ UXTB16 r7, r5, ROR #16 ; r7 = <s0|s2>
+ PKHBT r10,r6, r7, LSL #16 ; r10= <__|s2|__|r2>
+ SSUB16 r6, r4, r6 ; r6 = <r3-r0|r1-r2>
+ UXTB16 r5, r5, ROR #8 ; r5 = <s3|s1>
+ SMLAD r6, r6, r12,r12 ; r6 = <????|(r3-r0)+3*(r2-r1)+3>
+ SSUB16 r7, r5, r7 ; r7 = <r3-r0|r1-r2>
+ SMLAD r7, r7, r12,r12 ; r7 = <????|(s0-s3)+3*(s2-s1)+4>
+ ORR r9, r9, r10, LSL #8 ; r9 = <s2|q2|r2|p2>
+ MOV r6, r6, ASR #3 ; r6 = <??????|(r0-r3)+3*(r2-r1)+4>>3>
+ PKHBT r10,r4, r5, LSL #16 ; r10= <__|s1|__|r1>
+ PKHBT r6, r6, r7, LSL #13 ; r6 = <??|-R_s|??|-R_r>
+ ORR r8, r8, r10, LSL #8 ; r8 = <s1|q1|r1|p1>
+ UXTB16 r6, r6 ; r6 = <__|-R_s|__|-R_r>
+ MOV r10,#0
+ ORR r6, r11,r6, LSL #8 ; r6 = <-R_s|-R_q|-R_r|-R_p>
+ ; Single issue
+ ; There's no min, max or abs instruction.
+ ; SSUB8 and SEL will work for abs, and we can do all the rest with
+ ; unsigned saturated adds, which means the GE flags are still all
+ ; set when we're done computing lflim(abs(R_i),L).
+ ; This allows us to both add and subtract, and split the results by
+ ; the original sign of R_i.
+ SSUB8 r7, r10,r6
+ ; Single issue
+ SEL r7, r7, r6 ; r7 = abs(R_i)
+ ; Single issue
+ UQADD8 r4, r7, r2 ; r4 = 255-max(2*L-abs(R_i),0)
+ ; Single issue
+ UQADD8 r7, r7, r4
+ ; Single issue
+ UQSUB8 r7, r7, r4 ; r7 = min(abs(R_i),max(2*L-abs(R_i),0))
+ ; Single issue
+ UQSUB8 r4, r8, r7
+ UQADD8 r5, r9, r7
+ UQADD8 r8, r8, r7
+ UQSUB8 r9, r9, r7
+ SEL r8, r8, r4 ; r8 = p1+lflim(R_i,L)
+ SEL r9, r9, r5 ; r9 = p2-lflim(R_i,L)
+ MOV r5, r9, LSR #24 ; r5 = s2
+ STRB r5, [r0,#2]!
+ MOV r4, r8, LSR #24 ; r4 = s1
+ STRB r4, [r0,#-1]
+ MOV r5, r9, LSR #8 ; r5 = r2
+ STRB r5, [r0,-r1]!
+ MOV r4, r8, LSR #8 ; r4 = r1
+ STRB r4, [r0,#-1]
+ MOV r5, r9, LSR #16 ; r5 = q2
+ STRB r5, [r0,-r1]!
+ MOV r4, r8, LSR #16 ; r4 = q1
+ STRB r4, [r0,#-1]
+ ; Single issue
+ STRB r9, [r0,-r1]!
+ ; Single issue
+ STRB r8, [r0,#-1]
+ MOV PC,r14
+ ENDP
+
+; This uses the same strategy as the MMXEXT version for x86, except that UHADD8
+; computes (a+b>>1) instead of (a+b+1>>1) like PAVGB.
+; This works just as well, with the following procedure for computing the
+; filter value, f:
+; u = ~UHADD8(p1,~p2);
+; v = UHADD8(~p1,p2);
+; m = v-u;
+; a = m^UHADD8(m^p0,m^~p3);
+; f = UHADD8(UHADD8(a,u1),v1);
+; where f = 127+R, with R in [-127,128] defined as in the spec.
+; This is exactly the same amount of arithmetic as the version that uses PAVGB
+; as the basic operator.
+; It executes about 2/3 the number of instructions of David Conrad's approach,
+; but requires more code, because it does all eight columns at once, instead
+; of four at a time.
+loop_filter_v_v6 PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int _ll
+ ; preserves r0-r11
+ STMFD r13!,{r4-r11,r14}
+ LDRD r6, [r0, -r1]! ; r7, r6 = <p5|p1>
+ LDRD r4, [r0, -r1] ; r5, r4 = <p4|p0>
+ LDRD r8, [r0, r1]! ; r9, r8 = <p6|p2>
+ MVN r14,r6 ; r14= ~p1
+ LDRD r10,[r0, r1] ; r11,r10= <p7|p3>
+ ; Filter the first four columns.
+ MVN r12,r8 ; r12= ~p2
+ UHADD8 r14,r14,r8 ; r14= v1=~p1+p2>>1
+ UHADD8 r12,r12,r6 ; r12= p1+~p2>>1
+ MVN r10, r10 ; r10=~p3
+ MVN r12,r12 ; r12= u1=~p1+p2+1>>1
+ SSUB8 r14,r14,r12 ; r14= m1=v1-u1
+ ; Single issue
+ EOR r4, r4, r14 ; r4 = m1^p0
+ EOR r10,r10,r14 ; r10= m1^~p3
+ UHADD8 r4, r4, r10 ; r4 = (m1^p0)+(m1^~p3)>>1
+ ; Single issue
+ EOR r4, r4, r14 ; r4 = a1=m1^((m1^p0)+(m1^~p3)>>1)
+ SADD8 r14,r14,r12 ; r14= v1=m1+u1
+ UHADD8 r4, r4, r12 ; r4 = a1+u1>>1
+ MVN r12,r9 ; r12= ~p6
+ UHADD8 r4, r4, r14 ; r4 = f1=(a1+u1>>1)+v1>>1
+ ; Filter the second four columns.
+ MVN r14,r7 ; r14= ~p5
+ UHADD8 r12,r12,r7 ; r12= p5+~p6>>1
+ UHADD8 r14,r14,r9 ; r14= v2=~p5+p6>>1
+ MVN r12,r12 ; r12= u2=~p5+p6+1>>1
+ MVN r11,r11 ; r11=~p7
+ SSUB8 r10,r14,r12 ; r10= m2=v2-u2
+ ; Single issue
+ EOR r5, r5, r10 ; r5 = m2^p4
+ EOR r11,r11,r10 ; r11= m2^~p7
+ UHADD8 r5, r5, r11 ; r5 = (m2^p4)+(m2^~p7)>>1
+ ; Single issue
+ EOR r5, r5, r10 ; r5 = a2=m2^((m2^p4)+(m2^~p7)>>1)
+ ; Single issue
+ UHADD8 r5, r5, r12 ; r5 = a2+u2>>1
+ LDR r12,=0x7F7F7F7F ; r12 = {127}x4
+ UHADD8 r5, r5, r14 ; r5 = f2=(a2+u2>>1)+v2>>1
+ ; Now split f[i] by sign.
+ ; There's no min or max instruction.
+ ; We could use SSUB8 and SEL, but this is just as many instructions and
+ ; dual issues more (for v7 without NEON).
+ UQSUB8 r10,r4, r12 ; r10= R_i>0?R_i:0
+ UQSUB8 r4, r12,r4 ; r4 = R_i<0?-R_i:0
+ UQADD8 r11,r10,r2 ; r11= 255-max(2*L-abs(R_i<0),0)
+ UQADD8 r14,r4, r2 ; r14= 255-max(2*L-abs(R_i>0),0)
+ UQADD8 r10,r10,r11
+ UQADD8 r4, r4, r14
+ UQSUB8 r10,r10,r11 ; r10= min(abs(R_i<0),max(2*L-abs(R_i<0),0))
+ UQSUB8 r4, r4, r14 ; r4 = min(abs(R_i>0),max(2*L-abs(R_i>0),0))
+ UQSUB8 r11,r5, r12 ; r11= R_i>0?R_i:0
+ UQADD8 r6, r6, r10
+ UQSUB8 r8, r8, r10
+ UQSUB8 r5, r12,r5 ; r5 = R_i<0?-R_i:0
+ UQSUB8 r6, r6, r4 ; r6 = p1+lflim(R_i,L)
+ UQADD8 r8, r8, r4 ; r8 = p2-lflim(R_i,L)
+ UQADD8 r10,r11,r2 ; r10= 255-max(2*L-abs(R_i<0),0)
+ UQADD8 r14,r5, r2 ; r14= 255-max(2*L-abs(R_i>0),0)
+ UQADD8 r11,r11,r10
+ UQADD8 r5, r5, r14
+ UQSUB8 r11,r11,r10 ; r11= min(abs(R_i<0),max(2*L-abs(R_i<0),0))
+ UQSUB8 r5, r5, r14 ; r5 = min(abs(R_i>0),max(2*L-abs(R_i>0),0))
+ UQADD8 r7, r7, r11
+ UQSUB8 r9, r9, r11
+ UQSUB8 r7, r7, r5 ; r7 = p5+lflim(R_i,L)
+ STRD r6, [r0, -r1] ; [p5:p1] = [r7: r6]
+ UQADD8 r9, r9, r5 ; r9 = p6-lflim(R_i,L)
+ STRD r8, [r0] ; [p6:p2] = [r9: r8]
+ LDMFD r13!,{r4-r11,PC}
+ ENDP
+
+oc_loop_filter_frag_rows_v6 PROC
+ ; r0 = _ref_frame_data
+ ; r1 = _ystride
+ ; r2 = _bv
+ ; r3 = _frags
+ ; r4 = _fragi0
+ ; r5 = _fragi0_end
+ ; r6 = _fragi_top
+ ; r7 = _fragi_bot
+ ; r8 = _frag_buf_offs
+ ; r9 = _nhfrags
+ MOV r12,r13
+ STMFD r13!,{r0,r4-r11,r14}
+ LDMFD r12,{r4-r9}
+ LDR r2, [r2] ; ll = *(int *)_bv
+ CMP r4, r5 ; if(_fragi0>=_fragi0_end)
+ BGE oslffri_v6_end ; bail
+ SUBS r9, r9, #1 ; r9 = _nhfrags-1 if (r9<=0)
+ BLE oslffri_v6_end ; bail
+ ADD r3, r3, r4, LSL #2 ; r3 = &_frags[fragi]
+ ADD r8, r8, r4, LSL #2 ; r8 = &_frag_buf_offs[fragi]
+ SUB r7, r7, r9 ; _fragi_bot -= _nhfrags;
+oslffri_v6_lp1
+ MOV r10,r4 ; r10= fragi = _fragi0
+ ADD r11,r4, r9 ; r11= fragi_end-1=fragi+_nhfrags-1
+oslffri_v6_lp2
+ LDR r14,[r3], #4 ; r14= _frags[fragi] _frags++
+ LDR r0, [r13] ; r0 = _ref_frame_data
+ LDR r12,[r8], #4 ; r12= _frag_buf_offs[fragi] _frag_buf_offs++
+ TST r14,#OC_FRAG_CODED_FLAG
+ BEQ oslffri_v6_uncoded
+ CMP r10,r4 ; if (fragi>_fragi0)
+ ADD r0, r0, r12 ; r0 = _ref_frame_data + _frag_buf_offs[fragi]
+ BLGT loop_filter_h_v6
+ CMP r4, r6 ; if (fragi0>_fragi_top)
+ BLGT loop_filter_v_v6
+ CMP r10,r11 ; if(fragi+1<fragi_end)===(fragi<fragi_end-1)
+ LDRLT r12,[r3] ; r12 = _frags[fragi+1]
+ ADD r0, r0, #8
+ ADD r10,r10,#1 ; r10 = fragi+1;
+ ANDLT r12,r12,#OC_FRAG_CODED_FLAG
+ CMPLT r12,#OC_FRAG_CODED_FLAG ; && _frags[fragi+1].coded==0
+ BLLT loop_filter_h_v6
+ CMP r10,r7 ; if (fragi<_fragi_bot)
+ LDRLT r12,[r3, r9, LSL #2] ; r12 = _frags[fragi+1+_nhfrags-1]
+ SUB r0, r0, #8
+ ADD r0, r0, r1, LSL #3
+ ANDLT r12,r12,#OC_FRAG_CODED_FLAG
+ CMPLT r12,#OC_FRAG_CODED_FLAG
+ BLLT loop_filter_v_v6
+ CMP r10,r11 ; while(fragi<=fragi_end-1)
+ BLE oslffri_v6_lp2
+ MOV r4, r10 ; r4 = fragi0 += nhfrags
+ CMP r4, r5
+ BLT oslffri_v6_lp1
+oslffri_v6_end
+ LDMFD r13!,{r0,r4-r11,PC}
+oslffri_v6_uncoded
+ ADD r10,r10,#1
+ CMP r10,r11
+ BLE oslffri_v6_lp2
+ MOV r4, r10 ; r4 = fragi0 += nhfrags
+ CMP r4, r5
+ BLT oslffri_v6_lp1
+ LDMFD r13!,{r0,r4-r11,PC}
+ ENDP
+ ]
+
+ [ OC_ARM_ASM_NEON
+ EXPORT oc_loop_filter_init_neon
+ EXPORT oc_loop_filter_frag_rows_neon
+
+oc_loop_filter_init_neon PROC
+ ; r0 = _bv
+ ; r1 = _flimit (=L from the spec)
+ MOV r1, r1, LSL #1 ; r1 = 2*L
+ VDUP.S16 Q15, r1 ; Q15= 2L in U16s
+ VST1.64 {D30,D31}, [r0@128]
+ MOV PC,r14
+ ENDP
+
+loop_filter_h_neon PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int *_bv
+ ; preserves r0-r3
+ ; We assume Q15= 2*L in U16s
+ ; My best guesses at cycle counts (and latency)--vvv
+ SUB r12,r0, #2
+ ; Doing a 2-element structure load saves doing two VTRN's below, at the
+ ; cost of using two more slower single-lane loads vs. the faster
+ ; all-lane loads.
+ ; It's less code this way, though, and benches a hair faster, but it
+ ; leaves D2 and D4 swapped.
+ VLD2.16 {D0[],D2[]}, [r12], r1 ; D0 = ____________1100 2,1
+ ; D2 = ____________3322
+ VLD2.16 {D4[],D6[]}, [r12], r1 ; D4 = ____________5544 2,1
+ ; D6 = ____________7766
+ VLD2.16 {D0[1],D2[1]},[r12], r1 ; D0 = ________99881100 3,1
+ ; D2 = ________BBAA3322
+ VLD2.16 {D4[1],D6[1]},[r12], r1 ; D4 = ________DDCC5544 3,1
+ ; D6 = ________FFEE7766
+ VLD2.16 {D0[2],D2[2]},[r12], r1 ; D0 = ____GGHH99881100 3,1
+ ; D2 = ____JJIIBBAA3322
+ VLD2.16 {D4[2],D6[2]},[r12], r1 ; D4 = ____KKLLDDCC5544 3,1
+ ; D6 = ____NNMMFFEE7766
+ VLD2.16 {D0[3],D2[3]},[r12], r1 ; D0 = PPOOGGHH99881100 3,1
+ ; D2 = RRQQJJIIBBAA3322
+ VLD2.16 {D4[3],D6[3]},[r12], r1 ; D4 = TTSSKKLLDDCC5544 3,1
+ ; D6 = VVUUNNMMFFEE7766
+ VTRN.8 D0, D4 ; D0 = SSOOKKGGCC884400 D4 = TTPPLLHHDD995511 1,1
+ VTRN.8 D2, D6 ; D2 = UUQQMMIIEEAA6622 D6 = VVRRNNJJFFBB7733 1,1
+ VSUBL.U8 Q0, D0, D6 ; Q0 = 00 - 33 in S16s 1,3
+ VSUBL.U8 Q8, D2, D4 ; Q8 = 22 - 11 in S16s 1,3
+ ADD r12,r0, #8
+ VADD.S16 Q0, Q0, Q8 ; 1,3
+ PLD [r12]
+ VADD.S16 Q0, Q0, Q8 ; 1,3
+ PLD [r12,r1]
+ VADD.S16 Q0, Q0, Q8 ; Q0 = [0-3]+3*[2-1] 1,3
+ PLD [r12,r1, LSL #1]
+ VRSHR.S16 Q0, Q0, #3 ; Q0 = f = ([0-3]+3*[2-1]+4)>>3 1,4
+ ADD r12,r12,r1, LSL #2
+ ; We want to do
+ ; f = CLAMP(MIN(-2L-f,0), f, MAX(2L-f,0))
+ ; = ((f >= 0) ? MIN( f ,MAX(2L- f ,0)) : MAX( f , MIN(-2L- f ,0)))
+ ; = ((f >= 0) ? MIN(|f|,MAX(2L-|f|,0)) : MAX(-|f|, MIN(-2L+|f|,0)))
+ ; = ((f >= 0) ? MIN(|f|,MAX(2L-|f|,0)) :-MIN( |f|,-MIN(-2L+|f|,0)))
+ ; = ((f >= 0) ? MIN(|f|,MAX(2L-|f|,0)) :-MIN( |f|, MAX( 2L-|f|,0)))
+ ; So we've reduced the left and right hand terms to be the same, except
+ ; for a negation.
+ ; Stall x3
+ VABS.S16 Q9, Q0 ; Q9 = |f| in U16s 1,4
+ PLD [r12,-r1]
+ VSHR.S16 Q0, Q0, #15 ; Q0 = -1 or 0 according to sign 1,3
+ PLD [r12]
+ VQSUB.U16 Q10,Q15,Q9 ; Q10= MAX(2L-|f|,0) in U16s 1,4
+ PLD [r12,r1]
+ VMOVL.U8 Q1, D2 ; Q2 = __UU__QQ__MM__II__EE__AA__66__22 2,3
+ PLD [r12,r1,LSL #1]
+ VMIN.U16 Q9, Q10,Q9 ; Q9 = MIN(|f|,MAX(2L-|f|)) 1,4
+ ADD r12,r12,r1, LSL #2
+ ; Now we need to correct for the sign of f.
+ ; For negative elements of Q0, we want to subtract the appropriate
+ ; element of Q9. For positive elements we want to add them. No NEON
+ ; instruction exists to do this, so we need to negate the negative
+ ; elements, and we can then just add them. a-b = a-(1+!b) = a-1+!b
+ VADD.S16 Q9, Q9, Q0 ; 1,3
+ PLD [r12,-r1]
+ VEOR.S16 Q9, Q9, Q0 ; Q9 = real value of f 1,3
+ ; Bah. No VRSBW.U8
+ ; Stall (just 1 as Q9 not needed to second pipeline stage. I think.)
+ VADDW.U8 Q2, Q9, D4 ; Q1 = xxTTxxPPxxLLxxHHxxDDxx99xx55xx11 1,3
+ VSUB.S16 Q1, Q1, Q9 ; Q2 = xxUUxxQQxxMMxxIIxxEExxAAxx66xx22 1,3
+ VQMOVUN.S16 D4, Q2 ; D4 = TTPPLLHHDD995511 1,1
+ VQMOVUN.S16 D2, Q1 ; D2 = UUQQMMIIEEAA6622 1,1
+ SUB r12,r0, #1
+ VTRN.8 D4, D2 ; D4 = QQPPIIHHAA992211 D2 = MMLLEEDD6655 1,1
+ VST1.16 {D4[0]}, [r12], r1
+ VST1.16 {D2[0]}, [r12], r1
+ VST1.16 {D4[1]}, [r12], r1
+ VST1.16 {D2[1]}, [r12], r1
+ VST1.16 {D4[2]}, [r12], r1
+ VST1.16 {D2[2]}, [r12], r1
+ VST1.16 {D4[3]}, [r12], r1
+ VST1.16 {D2[3]}, [r12], r1
+ MOV PC,r14
+ ENDP
+
+loop_filter_v_neon PROC
+ ; r0 = unsigned char *_pix
+ ; r1 = int _ystride
+ ; r2 = int *_bv
+ ; preserves r0-r3
+ ; We assume Q15= 2*L in U16s
+ ; My best guesses at cycle counts (and latency)--vvv
+ SUB r12,r0, r1, LSL #1
+ VLD1.64 {D0}, [r12@64], r1 ; D0 = SSOOKKGGCC884400 2,1
+ VLD1.64 {D2}, [r12@64], r1 ; D2 = TTPPLLHHDD995511 2,1
+ VLD1.64 {D4}, [r12@64], r1 ; D4 = UUQQMMIIEEAA6622 2,1
+ VLD1.64 {D6}, [r12@64] ; D6 = VVRRNNJJFFBB7733 2,1
+ VSUBL.U8 Q8, D4, D2 ; Q8 = 22 - 11 in S16s 1,3
+ VSUBL.U8 Q0, D0, D6 ; Q0 = 00 - 33 in S16s 1,3
+ ADD r12, #8
+ VADD.S16 Q0, Q0, Q8 ; 1,3
+ PLD [r12]
+ VADD.S16 Q0, Q0, Q8 ; 1,3
+ PLD [r12,r1]
+ VADD.S16 Q0, Q0, Q8 ; Q0 = [0-3]+3*[2-1] 1,3
+ SUB r12, r0, r1
+ VRSHR.S16 Q0, Q0, #3 ; Q0 = f = ([0-3]+3*[2-1]+4)>>3 1,4
+ ; We want to do
+ ; f = CLAMP(MIN(-2L-f,0), f, MAX(2L-f,0))
+ ; = ((f >= 0) ? MIN( f ,MAX(2L- f ,0)) : MAX( f , MIN(-2L- f ,0)))
+ ; = ((f >= 0) ? MIN(|f|,MAX(2L-|f|,0)) : MAX(-|f|, MIN(-2L+|f|,0)))
+ ; = ((f >= 0) ? MIN(|f|,MAX(2L-|f|,0)) :-MIN( |f|,-MIN(-2L+|f|,0)))
+ ; = ((f >= 0) ? MIN(|f|,MAX(2L-|f|,0)) :-MIN( |f|, MAX( 2L-|f|,0)))
+ ; So we've reduced the left and right hand terms to be the same, except
+ ; for a negation.
+ ; Stall x3
+ VABS.S16 Q9, Q0 ; Q9 = |f| in U16s 1,4
+ VSHR.S16 Q0, Q0, #15 ; Q0 = -1 or 0 according to sign 1,3
+ ; Stall x2
+ VQSUB.U16 Q10,Q15,Q9 ; Q10= MAX(2L-|f|,0) in U16s 1,4
+ VMOVL.U8 Q2, D4 ; Q2 = __UU__QQ__MM__II__EE__AA__66__22 2,3
+ ; Stall x2
+ VMIN.U16 Q9, Q10,Q9 ; Q9 = MIN(|f|,MAX(2L-|f|)) 1,4
+ ; Now we need to correct for the sign of f.
+ ; For negative elements of Q0, we want to subtract the appropriate
+ ; element of Q9. For positive elements we want to add them. No NEON
+ ; instruction exists to do this, so we need to negate the negative
+ ; elements, and we can then just add them. a-b = a-(1+!b) = a-1+!b
+ ; Stall x3
+ VADD.S16 Q9, Q9, Q0 ; 1,3
+ ; Stall x2
+ VEOR.S16 Q9, Q9, Q0 ; Q9 = real value of f 1,3
+ ; Bah. No VRSBW.U8
+ ; Stall (just 1 as Q9 not needed to second pipeline stage. I think.)
+ VADDW.U8 Q1, Q9, D2 ; Q1 = xxTTxxPPxxLLxxHHxxDDxx99xx55xx11 1,3
+ VSUB.S16 Q2, Q2, Q9 ; Q2 = xxUUxxQQxxMMxxIIxxEExxAAxx66xx22 1,3
+ VQMOVUN.S16 D2, Q1 ; D2 = TTPPLLHHDD995511 1,1
+ VQMOVUN.S16 D4, Q2 ; D4 = UUQQMMIIEEAA6622 1,1
+ VST1.64 {D2}, [r12@64], r1
+ VST1.64 {D4}, [r12@64], r1
+ MOV PC,r14
+ ENDP
+
+oc_loop_filter_frag_rows_neon PROC
+ ; r0 = _ref_frame_data
+ ; r1 = _ystride
+ ; r2 = _bv
+ ; r3 = _frags
+ ; r4 = _fragi0
+ ; r5 = _fragi0_end
+ ; r6 = _fragi_top
+ ; r7 = _fragi_bot
+ ; r8 = _frag_buf_offs
+ ; r9 = _nhfrags
+ MOV r12,r13
+ STMFD r13!,{r0,r4-r11,r14}
+ LDMFD r12,{r4-r9}
+ CMP r4, r5 ; if(_fragi0>=_fragi0_end)
+ BGE oslffri_neon_end; bail
+ SUBS r9, r9, #1 ; r9 = _nhfrags-1 if (r9<=0)
+ BLE oslffri_neon_end ; bail
+ VLD1.64 {D30,D31}, [r2@128] ; Q15= 2L in U16s
+ ADD r3, r3, r4, LSL #2 ; r3 = &_frags[fragi]
+ ADD r8, r8, r4, LSL #2 ; r8 = &_frag_buf_offs[fragi]
+ SUB r7, r7, r9 ; _fragi_bot -= _nhfrags;
+oslffri_neon_lp1
+ MOV r10,r4 ; r10= fragi = _fragi0
+ ADD r11,r4, r9 ; r11= fragi_end-1=fragi+_nhfrags-1
+oslffri_neon_lp2
+ LDR r14,[r3], #4 ; r14= _frags[fragi] _frags++
+ LDR r0, [r13] ; r0 = _ref_frame_data
+ LDR r12,[r8], #4 ; r12= _frag_buf_offs[fragi] _frag_buf_offs++
+ TST r14,#OC_FRAG_CODED_FLAG
+ BEQ oslffri_neon_uncoded
+ CMP r10,r4 ; if (fragi>_fragi0)
+ ADD r0, r0, r12 ; r0 = _ref_frame_data + _frag_buf_offs[fragi]
+ BLGT loop_filter_h_neon
+ CMP r4, r6 ; if (_fragi0>_fragi_top)
+ BLGT loop_filter_v_neon
+ CMP r10,r11 ; if(fragi+1<fragi_end)===(fragi<fragi_end-1)
+ LDRLT r12,[r3] ; r12 = _frags[fragi+1]
+ ADD r0, r0, #8
+ ADD r10,r10,#1 ; r10 = fragi+1;
+ ANDLT r12,r12,#OC_FRAG_CODED_FLAG
+ CMPLT r12,#OC_FRAG_CODED_FLAG ; && _frags[fragi+1].coded==0
+ BLLT loop_filter_h_neon
+ CMP r10,r7 ; if (fragi<_fragi_bot)
+ LDRLT r12,[r3, r9, LSL #2] ; r12 = _frags[fragi+1+_nhfrags-1]
+ SUB r0, r0, #8
+ ADD r0, r0, r1, LSL #3
+ ANDLT r12,r12,#OC_FRAG_CODED_FLAG
+ CMPLT r12,#OC_FRAG_CODED_FLAG
+ BLLT loop_filter_v_neon
+ CMP r10,r11 ; while(fragi<=fragi_end-1)
+ BLE oslffri_neon_lp2
+ MOV r4, r10 ; r4 = _fragi0 += _nhfrags
+ CMP r4, r5
+ BLT oslffri_neon_lp1
+oslffri_neon_end
+ LDMFD r13!,{r0,r4-r11,PC}
+oslffri_neon_uncoded
+ ADD r10,r10,#1
+ CMP r10,r11
+ BLE oslffri_neon_lp2
+ MOV r4, r10 ; r4 = _fragi0 += _nhfrags
+ CMP r4, r5
+ BLT oslffri_neon_lp1
+ LDMFD r13!,{r0,r4-r11,PC}
+ ENDP
+ ]
+
+ END
diff --git a/media/libtheora/lib/arm/armopts.s b/media/libtheora/lib/arm/armopts.s
new file mode 100644
index 000000000..e4da429e4
--- /dev/null
+++ b/media/libtheora/lib/arm/armopts.s
@@ -0,0 +1,39 @@
+;********************************************************************
+;* *
+;* THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+;* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+;* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+;* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+;* *
+;* THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+;* by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+;* *
+;********************************************************************
+; Original implementation:
+; Copyright (C) 2009 Robin Watts for Pinknoise Productions Ltd
+; last mod: $Id: armopts.s.in 17430 2010-09-22 21:54:09Z tterribe $
+;********************************************************************
+
+; Set the following to 1 if we have EDSP instructions
+; (LDRD/STRD, etc., ARMv5E and later).
+OC_ARM_ASM_EDSP * 1
+
+; Set the following to 1 if we have ARMv6 media instructions.
+OC_ARM_ASM_MEDIA * 1
+
+; Set the following to 1 if we have NEON (some ARMv7)
+OC_ARM_ASM_NEON * 1
+
+; Set the following to 1 if LDR/STR can work on unaligned addresses
+; This is assumed to be true for ARMv6 and later code
+OC_ARM_CAN_UNALIGN * 0
+
+; Large unaligned loads and stores are often configured to cause an exception.
+; They cause an 8 cycle stall when they cross a 128-bit (load) or 64-bit (store)
+; boundary, so it's usually a bad idea to use them anyway if they can be
+; avoided.
+
+; Set the following to 1 if LDRD/STRD can work on unaligned addresses
+OC_ARM_CAN_UNALIGN_LDRD * 0
+
+ END
diff --git a/media/libtheora/lib/arm/armstate.c b/media/libtheora/lib/arm/armstate.c
new file mode 100644
index 000000000..a56060838
--- /dev/null
+++ b/media/libtheora/lib/arm/armstate.c
@@ -0,0 +1,219 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2010 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86state.c 17344 2010-07-21 01:42:18Z tterribe $
+
+ ********************************************************************/
+#include "armint.h"
+
+#if defined(OC_ARM_ASM)
+
+# if defined(OC_ARM_ASM_NEON)
+/*This table has been modified from OC_FZIG_ZAG by baking an 8x8 transpose into
+ the destination.*/
+static const unsigned char OC_FZIG_ZAG_NEON[128]={
+ 0, 8, 1, 2, 9,16,24,17,
+ 10, 3, 4,11,18,25,32,40,
+ 33,26,19,12, 5, 6,13,20,
+ 27,34,41,48,56,49,42,35,
+ 28,21,14, 7,15,22,29,36,
+ 43,50,57,58,51,44,37,30,
+ 23,31,38,45,52,59,60,53,
+ 46,39,47,54,61,62,55,63,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64
+};
+# endif
+
+void oc_state_accel_init_arm(oc_theora_state *_state){
+ oc_state_accel_init_c(_state);
+ _state->cpu_flags=oc_cpu_flags_get();
+# if defined(OC_STATE_USE_VTABLE)
+ _state->opt_vtable.frag_copy_list=oc_frag_copy_list_arm;
+ _state->opt_vtable.frag_recon_intra=oc_frag_recon_intra_arm;
+ _state->opt_vtable.frag_recon_inter=oc_frag_recon_inter_arm;
+ _state->opt_vtable.frag_recon_inter2=oc_frag_recon_inter2_arm;
+ _state->opt_vtable.idct8x8=oc_idct8x8_arm;
+ _state->opt_vtable.state_frag_recon=oc_state_frag_recon_arm;
+ /*Note: We _must_ set this function pointer, because the macro in armint.h
+ calls it with different arguments, so the C version will segfault.*/
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ (oc_state_loop_filter_frag_rows_func)oc_loop_filter_frag_rows_arm;
+# endif
+# if defined(OC_ARM_ASM_EDSP)
+ if(_state->cpu_flags&OC_CPU_ARM_EDSP){
+# if defined(OC_STATE_USE_VTABLE)
+ _state->opt_vtable.frag_copy_list=oc_frag_copy_list_edsp;
+# endif
+ }
+# if defined(OC_ARM_ASM_MEDIA)
+ if(_state->cpu_flags&OC_CPU_ARM_MEDIA){
+# if defined(OC_STATE_USE_VTABLE)
+ _state->opt_vtable.frag_recon_intra=oc_frag_recon_intra_v6;
+ _state->opt_vtable.frag_recon_inter=oc_frag_recon_inter_v6;
+ _state->opt_vtable.frag_recon_inter2=oc_frag_recon_inter2_v6;
+ _state->opt_vtable.idct8x8=oc_idct8x8_v6;
+ _state->opt_vtable.state_frag_recon=oc_state_frag_recon_v6;
+ _state->opt_vtable.loop_filter_init=oc_loop_filter_init_v6;
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ (oc_state_loop_filter_frag_rows_func)oc_loop_filter_frag_rows_v6;
+# endif
+ }
+# if defined(OC_ARM_ASM_NEON)
+ if(_state->cpu_flags&OC_CPU_ARM_NEON){
+# if defined(OC_STATE_USE_VTABLE)
+ _state->opt_vtable.frag_copy_list=oc_frag_copy_list_neon;
+ _state->opt_vtable.frag_recon_intra=oc_frag_recon_intra_neon;
+ _state->opt_vtable.frag_recon_inter=oc_frag_recon_inter_neon;
+ _state->opt_vtable.frag_recon_inter2=oc_frag_recon_inter2_neon;
+ _state->opt_vtable.state_frag_recon=oc_state_frag_recon_neon;
+ _state->opt_vtable.loop_filter_init=oc_loop_filter_init_neon;
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ (oc_state_loop_filter_frag_rows_func)oc_loop_filter_frag_rows_neon;
+ _state->opt_vtable.idct8x8=oc_idct8x8_neon;
+# endif
+ _state->opt_data.dct_fzig_zag=OC_FZIG_ZAG_NEON;
+ }
+# endif
+# endif
+# endif
+}
+
+void oc_state_frag_recon_arm(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){
+ unsigned char *dst;
+ ptrdiff_t frag_buf_off;
+ int ystride;
+ int refi;
+ /*Apply the inverse transform.*/
+ /*Special case only having a DC component.*/
+ if(_last_zzi<2){
+ ogg_uint16_t p;
+ /*We round this dequant product (and not any of the others) because there's
+ no iDCT rounding.*/
+ p=(ogg_uint16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5);
+ oc_idct8x8_1_arm(_dct_coeffs+64,p);
+ }
+ else{
+ /*First, dequantize the DC coefficient.*/
+ _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant);
+ oc_idct8x8_arm(_dct_coeffs+64,_dct_coeffs,_last_zzi);
+ }
+ /*Fill in the target buffer.*/
+ frag_buf_off=_state->frag_buf_offs[_fragi];
+ refi=_state->frags[_fragi].refi;
+ ystride=_state->ref_ystride[_pli];
+ dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off;
+ if(refi==OC_FRAME_SELF)oc_frag_recon_intra_arm(dst,ystride,_dct_coeffs+64);
+ else{
+ const unsigned char *ref;
+ int mvoffsets[2];
+ ref=_state->ref_frame_data[refi]+frag_buf_off;
+ if(oc_state_get_mv_offsets(_state,mvoffsets,_pli,
+ _state->frag_mvs[_fragi])>1){
+ oc_frag_recon_inter2_arm(dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride,
+ _dct_coeffs+64);
+ }
+ else oc_frag_recon_inter_arm(dst,ref+mvoffsets[0],ystride,_dct_coeffs+64);
+ }
+}
+
+# if defined(OC_ARM_ASM_MEDIA)
+void oc_state_frag_recon_v6(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){
+ unsigned char *dst;
+ ptrdiff_t frag_buf_off;
+ int ystride;
+ int refi;
+ /*Apply the inverse transform.*/
+ /*Special case only having a DC component.*/
+ if(_last_zzi<2){
+ ogg_uint16_t p;
+ /*We round this dequant product (and not any of the others) because there's
+ no iDCT rounding.*/
+ p=(ogg_uint16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5);
+ oc_idct8x8_1_v6(_dct_coeffs+64,p);
+ }
+ else{
+ /*First, dequantize the DC coefficient.*/
+ _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant);
+ oc_idct8x8_v6(_dct_coeffs+64,_dct_coeffs,_last_zzi);
+ }
+ /*Fill in the target buffer.*/
+ frag_buf_off=_state->frag_buf_offs[_fragi];
+ refi=_state->frags[_fragi].refi;
+ ystride=_state->ref_ystride[_pli];
+ dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off;
+ if(refi==OC_FRAME_SELF)oc_frag_recon_intra_v6(dst,ystride,_dct_coeffs+64);
+ else{
+ const unsigned char *ref;
+ int mvoffsets[2];
+ ref=_state->ref_frame_data[refi]+frag_buf_off;
+ if(oc_state_get_mv_offsets(_state,mvoffsets,_pli,
+ _state->frag_mvs[_fragi])>1){
+ oc_frag_recon_inter2_v6(dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride,
+ _dct_coeffs+64);
+ }
+ else oc_frag_recon_inter_v6(dst,ref+mvoffsets[0],ystride,_dct_coeffs+64);
+ }
+}
+
+# if defined(OC_ARM_ASM_NEON)
+void oc_state_frag_recon_neon(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){
+ unsigned char *dst;
+ ptrdiff_t frag_buf_off;
+ int ystride;
+ int refi;
+ /*Apply the inverse transform.*/
+ /*Special case only having a DC component.*/
+ if(_last_zzi<2){
+ ogg_uint16_t p;
+ /*We round this dequant product (and not any of the others) because there's
+ no iDCT rounding.*/
+ p=(ogg_uint16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5);
+ oc_idct8x8_1_neon(_dct_coeffs+64,p);
+ }
+ else{
+ /*First, dequantize the DC coefficient.*/
+ _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant);
+ oc_idct8x8_neon(_dct_coeffs+64,_dct_coeffs,_last_zzi);
+ }
+ /*Fill in the target buffer.*/
+ frag_buf_off=_state->frag_buf_offs[_fragi];
+ refi=_state->frags[_fragi].refi;
+ ystride=_state->ref_ystride[_pli];
+ dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off;
+ if(refi==OC_FRAME_SELF)oc_frag_recon_intra_neon(dst,ystride,_dct_coeffs+64);
+ else{
+ const unsigned char *ref;
+ int mvoffsets[2];
+ ref=_state->ref_frame_data[refi]+frag_buf_off;
+ if(oc_state_get_mv_offsets(_state,mvoffsets,_pli,
+ _state->frag_mvs[_fragi])>1){
+ oc_frag_recon_inter2_neon(dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride,
+ _dct_coeffs+64);
+ }
+ else oc_frag_recon_inter_neon(dst,ref+mvoffsets[0],ystride,_dct_coeffs+64);
+ }
+}
+# endif
+# endif
+
+#endif
diff --git a/media/libtheora/lib/bitpack.c b/media/libtheora/lib/bitpack.c
new file mode 100644
index 000000000..8bfce4c3d
--- /dev/null
+++ b/media/libtheora/lib/bitpack.c
@@ -0,0 +1,114 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE OggTheora SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function: packing variable sized words into an octet stream
+ last mod: $Id: bitpack.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+#include <string.h>
+#include <stdlib.h>
+#include "bitpack.h"
+
+/*We're 'MSb' endian; if we write a word but read individual bits,
+ then we'll read the MSb first.*/
+
+void oc_pack_readinit(oc_pack_buf *_b,unsigned char *_buf,long _bytes){
+ memset(_b,0,sizeof(*_b));
+ _b->ptr=_buf;
+ _b->stop=_buf+_bytes;
+}
+
+static oc_pb_window oc_pack_refill(oc_pack_buf *_b,int _bits){
+ const unsigned char *ptr;
+ const unsigned char *stop;
+ oc_pb_window window;
+ int available;
+ unsigned shift;
+ stop=_b->stop;
+ ptr=_b->ptr;
+ window=_b->window;
+ available=_b->bits;
+ shift=OC_PB_WINDOW_SIZE-available;
+ while(7<shift&&ptr<stop){
+ shift-=8;
+ window|=(oc_pb_window)*ptr++<<shift;
+ }
+ _b->ptr=ptr;
+ available=OC_PB_WINDOW_SIZE-shift;
+ if(_bits>available){
+ if(ptr>=stop){
+ _b->eof=1;
+ available=OC_LOTS_OF_BITS;
+ }
+ else window|=*ptr>>(available&7);
+ }
+ _b->bits=available;
+ return window;
+}
+
+int oc_pack_look1(oc_pack_buf *_b){
+ oc_pb_window window;
+ int available;
+ window=_b->window;
+ available=_b->bits;
+ if(available<1)_b->window=window=oc_pack_refill(_b,1);
+ return window>>OC_PB_WINDOW_SIZE-1;
+}
+
+void oc_pack_adv1(oc_pack_buf *_b){
+ _b->window<<=1;
+ _b->bits--;
+}
+
+/*Here we assume that 0<=_bits&&_bits<=32.*/
+long oc_pack_read_c(oc_pack_buf *_b,int _bits){
+ oc_pb_window window;
+ int available;
+ long result;
+ window=_b->window;
+ available=_b->bits;
+ if(_bits==0)return 0;
+ if(available<_bits){
+ window=oc_pack_refill(_b,_bits);
+ available=_b->bits;
+ }
+ result=window>>OC_PB_WINDOW_SIZE-_bits;
+ available-=_bits;
+ window<<=1;
+ window<<=_bits-1;
+ _b->window=window;
+ _b->bits=available;
+ return result;
+}
+
+int oc_pack_read1_c(oc_pack_buf *_b){
+ oc_pb_window window;
+ int available;
+ int result;
+ window=_b->window;
+ available=_b->bits;
+ if(available<1){
+ window=oc_pack_refill(_b,1);
+ available=_b->bits;
+ }
+ result=window>>OC_PB_WINDOW_SIZE-1;
+ available--;
+ window<<=1;
+ _b->window=window;
+ _b->bits=available;
+ return result;
+}
+
+long oc_pack_bytes_left(oc_pack_buf *_b){
+ if(_b->eof)return -1;
+ return _b->stop-_b->ptr+(_b->bits>>3);
+}
diff --git a/media/libtheora/lib/bitpack.h b/media/libtheora/lib/bitpack.h
new file mode 100644
index 000000000..237b58405
--- /dev/null
+++ b/media/libtheora/lib/bitpack.h
@@ -0,0 +1,76 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE OggTheora SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function: packing variable sized words into an octet stream
+ last mod: $Id: bitwise.c 7675 2004-09-01 00:34:39Z xiphmont $
+
+ ********************************************************************/
+#if !defined(_bitpack_H)
+# define _bitpack_H (1)
+# include <stddef.h>
+# include <limits.h>
+# include "internal.h"
+
+
+
+typedef size_t oc_pb_window;
+typedef struct oc_pack_buf oc_pack_buf;
+
+
+
+/*Custom bitpacker implementations.*/
+# if defined(OC_ARM_ASM)
+# include "arm/armbits.h"
+# endif
+
+# if !defined(oc_pack_read)
+# define oc_pack_read oc_pack_read_c
+# endif
+# if !defined(oc_pack_read1)
+# define oc_pack_read1 oc_pack_read1_c
+# endif
+# if !defined(oc_huff_token_decode)
+# define oc_huff_token_decode oc_huff_token_decode_c
+# endif
+
+# define OC_PB_WINDOW_SIZE ((int)sizeof(oc_pb_window)*CHAR_BIT)
+/*This is meant to be a large, positive constant that can still be efficiently
+ loaded as an immediate (on platforms like ARM, for example).
+ Even relatively modest values like 100 would work fine.*/
+# define OC_LOTS_OF_BITS (0x40000000)
+
+
+
+struct oc_pack_buf{
+ const unsigned char *stop;
+ const unsigned char *ptr;
+ oc_pb_window window;
+ int bits;
+ int eof;
+};
+
+void oc_pack_readinit(oc_pack_buf *_b,unsigned char *_buf,long _bytes);
+int oc_pack_look1(oc_pack_buf *_b);
+void oc_pack_adv1(oc_pack_buf *_b);
+/*Here we assume 0<=_bits&&_bits<=32.*/
+long oc_pack_read_c(oc_pack_buf *_b,int _bits);
+int oc_pack_read1_c(oc_pack_buf *_b);
+/* returns -1 for read beyond EOF, or the number of whole bytes available */
+long oc_pack_bytes_left(oc_pack_buf *_b);
+
+/*These two functions are implemented locally in huffdec.c*/
+/*Read in bits without advancing the bitptr.
+ Here we assume 0<=_bits&&_bits<=32.*/
+/*static int oc_pack_look(oc_pack_buf *_b,int _bits);*/
+/*static void oc_pack_adv(oc_pack_buf *_b,int _bits);*/
+
+#endif
diff --git a/media/libtheora/lib/config.h b/media/libtheora/lib/config.h
new file mode 100644
index 000000000..49772ac7f
--- /dev/null
+++ b/media/libtheora/lib/config.h
@@ -0,0 +1,98 @@
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* libcairo is available for visual debugging output */
+/* #undef HAVE_CAIRO */
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#define HAVE_DLFCN_H 1
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#define HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the <machine/soundcard.h> header file. */
+/* #undef HAVE_MACHINE_SOUNDCARD_H */
+
+/* Define to 1 if you have the <memory.h> header file. */
+#define HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the <soundcard.h> header file. */
+/* #undef HAVE_SOUNDCARD_H */
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#define HAVE_STDINT_H 1
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#define HAVE_STDLIB_H 1
+
+/* Define to 1 if you have the <strings.h> header file. */
+#define HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the <string.h> header file. */
+#define HAVE_STRING_H 1
+
+/* Define to 1 if you have the <sys/soundcard.h> header file. */
+#define HAVE_SYS_SOUNDCARD_H 1
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#define HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#define HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#define HAVE_UNISTD_H 1
+
+/* Define to 1 if your C compiler doesn't accept -c and -o together. */
+/* #undef NO_MINUS_C_MINUS_O */
+
+/* make use of arm asm optimization */
+
+
+/* Define if assembler supports EDSP instructions */
+
+
+/* Define if assembler supports ARMv6 media instructions */
+
+
+/* Define if compiler supports NEON instructions */
+
+
+/* make use of c64x+ asm optimization */
+/* #undef OC_C64X_ASM */
+
+/* make use of x86_64 asm optimization */
+/* #undef OC_X86_64_ASM */
+
+/* make use of x86 asm optimization */
+/* #undef OC_X86_ASM */
+
+/* Name of package */
+#define PACKAGE "libtheora"
+
+/* Define to the address where bug reports for this package should be sent. */
+#define PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define PACKAGE_NAME "libtheora"
+
+/* Define to the full name and version of this package. */
+#define PACKAGE_STRING "libtheora 1.2.0alpha1+svn"
+
+/* Define to the one symbol short name of this package. */
+#define PACKAGE_TARNAME "libtheora"
+
+/* Define to the version of this package. */
+#define PACKAGE_VERSION "1.2.0alpha1+svn"
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Define to exclude encode support from the build */
+/* #undef THEORA_DISABLE_ENCODE */
+
+/* Define to exclude floating point code from the build */
+/* #undef THEORA_DISABLE_FLOAT */
+
+/* Version number of package */
+#define VERSION "1.2.0alpha1+svn"
diff --git a/media/libtheora/lib/dct.h b/media/libtheora/lib/dct.h
new file mode 100644
index 000000000..24ba6f111
--- /dev/null
+++ b/media/libtheora/lib/dct.h
@@ -0,0 +1,31 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: dct.h 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+/*Definitions shared by the forward and inverse DCT transforms.*/
+#if !defined(_dct_H)
+# define _dct_H (1)
+
+/*cos(n*pi/16) (resp. sin(m*pi/16)) scaled by 65536.*/
+#define OC_C1S7 ((ogg_int32_t)64277)
+#define OC_C2S6 ((ogg_int32_t)60547)
+#define OC_C3S5 ((ogg_int32_t)54491)
+#define OC_C4S4 ((ogg_int32_t)46341)
+#define OC_C5S3 ((ogg_int32_t)36410)
+#define OC_C6S2 ((ogg_int32_t)25080)
+#define OC_C7S1 ((ogg_int32_t)12785)
+
+#endif
diff --git a/media/libtheora/lib/decapiwrapper.c b/media/libtheora/lib/decapiwrapper.c
new file mode 100644
index 000000000..12ea475d1
--- /dev/null
+++ b/media/libtheora/lib/decapiwrapper.c
@@ -0,0 +1,193 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: decapiwrapper.c 13596 2007-08-23 20:05:38Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include "apiwrapper.h"
+#include "decint.h"
+#include "theora/theoradec.h"
+
+static void th_dec_api_clear(th_api_wrapper *_api){
+ if(_api->setup)th_setup_free(_api->setup);
+ if(_api->decode)th_decode_free(_api->decode);
+ memset(_api,0,sizeof(*_api));
+}
+
+static void theora_decode_clear(theora_state *_td){
+ if(_td->i!=NULL)theora_info_clear(_td->i);
+ memset(_td,0,sizeof(*_td));
+}
+
+static int theora_decode_control(theora_state *_td,int _req,
+ void *_buf,size_t _buf_sz){
+ return th_decode_ctl(((th_api_wrapper *)_td->i->codec_setup)->decode,
+ _req,_buf,_buf_sz);
+}
+
+static ogg_int64_t theora_decode_granule_frame(theora_state *_td,
+ ogg_int64_t _gp){
+ return th_granule_frame(((th_api_wrapper *)_td->i->codec_setup)->decode,_gp);
+}
+
+static double theora_decode_granule_time(theora_state *_td,ogg_int64_t _gp){
+ return th_granule_time(((th_api_wrapper *)_td->i->codec_setup)->decode,_gp);
+}
+
+static const oc_state_dispatch_vtable OC_DEC_DISPATCH_VTBL={
+ (oc_state_clear_func)theora_decode_clear,
+ (oc_state_control_func)theora_decode_control,
+ (oc_state_granule_frame_func)theora_decode_granule_frame,
+ (oc_state_granule_time_func)theora_decode_granule_time,
+};
+
+static void th_info2theora_info(theora_info *_ci,const th_info *_info){
+ _ci->version_major=_info->version_major;
+ _ci->version_minor=_info->version_minor;
+ _ci->version_subminor=_info->version_subminor;
+ _ci->width=_info->frame_width;
+ _ci->height=_info->frame_height;
+ _ci->frame_width=_info->pic_width;
+ _ci->frame_height=_info->pic_height;
+ _ci->offset_x=_info->pic_x;
+ _ci->offset_y=_info->pic_y;
+ _ci->fps_numerator=_info->fps_numerator;
+ _ci->fps_denominator=_info->fps_denominator;
+ _ci->aspect_numerator=_info->aspect_numerator;
+ _ci->aspect_denominator=_info->aspect_denominator;
+ switch(_info->colorspace){
+ case TH_CS_ITU_REC_470M:_ci->colorspace=OC_CS_ITU_REC_470M;break;
+ case TH_CS_ITU_REC_470BG:_ci->colorspace=OC_CS_ITU_REC_470BG;break;
+ default:_ci->colorspace=OC_CS_UNSPECIFIED;break;
+ }
+ switch(_info->pixel_fmt){
+ case TH_PF_420:_ci->pixelformat=OC_PF_420;break;
+ case TH_PF_422:_ci->pixelformat=OC_PF_422;break;
+ case TH_PF_444:_ci->pixelformat=OC_PF_444;break;
+ default:_ci->pixelformat=OC_PF_RSVD;
+ }
+ _ci->target_bitrate=_info->target_bitrate;
+ _ci->quality=_info->quality;
+ _ci->keyframe_frequency_force=1<<_info->keyframe_granule_shift;
+}
+
+int theora_decode_init(theora_state *_td,theora_info *_ci){
+ th_api_info *apiinfo;
+ th_api_wrapper *api;
+ th_info info;
+ api=(th_api_wrapper *)_ci->codec_setup;
+ /*Allocate our own combined API wrapper/theora_info struct.
+ We put them both in one malloc'd block so that when the API wrapper is
+ freed, the info struct goes with it.
+ This avoids having to figure out whether or not we need to free the info
+ struct in either theora_info_clear() or theora_clear().*/
+ apiinfo=(th_api_info *)_ogg_calloc(1,sizeof(*apiinfo));
+ if(apiinfo==NULL)return OC_FAULT;
+ /*Make our own copy of the info struct, since its lifetime should be
+ independent of the one we were passed in.*/
+ *&apiinfo->info=*_ci;
+ /*Convert the info struct now instead of saving the the one we decoded with
+ theora_decode_header(), since the user might have modified values (i.e.,
+ color space, aspect ratio, etc. can be specified from a higher level).
+ The user also might be doing something "clever" with the header packets if
+ they are not using an Ogg encapsulation.*/
+ oc_theora_info2th_info(&info,_ci);
+ /*Don't bother to copy the setup info; th_decode_alloc() makes its own copy
+ of the stuff it needs.*/
+ apiinfo->api.decode=th_decode_alloc(&info,api->setup);
+ if(apiinfo->api.decode==NULL){
+ _ogg_free(apiinfo);
+ return OC_EINVAL;
+ }
+ apiinfo->api.clear=(oc_setup_clear_func)th_dec_api_clear;
+ _td->internal_encode=NULL;
+ /*Provide entry points for ABI compatibility with old decoder shared libs.*/
+ _td->internal_decode=(void *)&OC_DEC_DISPATCH_VTBL;
+ _td->granulepos=0;
+ _td->i=&apiinfo->info;
+ _td->i->codec_setup=&apiinfo->api;
+ return 0;
+}
+
+int theora_decode_header(theora_info *_ci,theora_comment *_cc,ogg_packet *_op){
+ th_api_wrapper *api;
+ th_info info;
+ int ret;
+ api=(th_api_wrapper *)_ci->codec_setup;
+ /*Allocate an API wrapper struct on demand, since it will not also include a
+ theora_info struct like the ones that are used in a theora_state struct.*/
+ if(api==NULL){
+ _ci->codec_setup=_ogg_calloc(1,sizeof(*api));
+ if(_ci->codec_setup==NULL)return OC_FAULT;
+ api=(th_api_wrapper *)_ci->codec_setup;
+ api->clear=(oc_setup_clear_func)th_dec_api_clear;
+ }
+ /*Convert from the theora_info struct instead of saving our own th_info
+ struct between calls.
+ The user might be doing something "clever" with the header packets if they
+ are not using an Ogg encapsulation, and we don't want to break this.*/
+ oc_theora_info2th_info(&info,_ci);
+ /*We rely on the fact that theora_comment and th_comment structures are
+ actually identical.
+ Take care not to change this fact unless you change the code here as
+ well!*/
+ ret=th_decode_headerin(&info,(th_comment *)_cc,&api->setup,_op);
+ /*We also rely on the fact that the error return code values are the same,
+ and that the implementations of these two functions return the same set of
+ them.
+ Note that theora_decode_header() really can return OC_NOTFORMAT, even
+ though it is not currently documented to do so.*/
+ if(ret<0)return ret;
+ th_info2theora_info(_ci,&info);
+ return 0;
+}
+
+int theora_decode_packetin(theora_state *_td,ogg_packet *_op){
+ th_api_wrapper *api;
+ ogg_int64_t gp;
+ int ret;
+ if(!_td||!_td->i||!_td->i->codec_setup)return OC_FAULT;
+ api=(th_api_wrapper *)_td->i->codec_setup;
+ ret=th_decode_packetin(api->decode,_op,&gp);
+ if(ret<0)return OC_BADPACKET;
+ _td->granulepos=gp;
+ return 0;
+}
+
+int theora_decode_YUVout(theora_state *_td,yuv_buffer *_yuv){
+ th_api_wrapper *api;
+ th_dec_ctx *decode;
+ th_ycbcr_buffer buf;
+ int ret;
+ if(!_td||!_td->i||!_td->i->codec_setup)return OC_FAULT;
+ api=(th_api_wrapper *)_td->i->codec_setup;
+ decode=(th_dec_ctx *)api->decode;
+ if(!decode)return OC_FAULT;
+ ret=th_decode_ycbcr_out(decode,buf);
+ if(ret>=0){
+ _yuv->y_width=buf[0].width;
+ _yuv->y_height=buf[0].height;
+ _yuv->y_stride=buf[0].stride;
+ _yuv->uv_width=buf[1].width;
+ _yuv->uv_height=buf[1].height;
+ _yuv->uv_stride=buf[1].stride;
+ _yuv->y=buf[0].data;
+ _yuv->u=buf[1].data;
+ _yuv->v=buf[2].data;
+ }
+ return ret;
+}
diff --git a/media/libtheora/lib/decinfo.c b/media/libtheora/lib/decinfo.c
new file mode 100644
index 000000000..603b1f93e
--- /dev/null
+++ b/media/libtheora/lib/decinfo.c
@@ -0,0 +1,250 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: decinfo.c 17276 2010-06-05 05:57:05Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include "decint.h"
+
+
+
+/*Unpacks a series of octets from a given byte array into the pack buffer.
+ No checking is done to ensure the buffer contains enough data.
+ _opb: The pack buffer to read the octets from.
+ _buf: The byte array to store the unpacked bytes in.
+ _len: The number of octets to unpack.*/
+static void oc_unpack_octets(oc_pack_buf *_opb,char *_buf,size_t _len){
+ while(_len-->0){
+ long val;
+ val=oc_pack_read(_opb,8);
+ *_buf++=(char)val;
+ }
+}
+
+/*Unpacks a 32-bit integer encoded by octets in little-endian form.*/
+static long oc_unpack_length(oc_pack_buf *_opb){
+ long ret[4];
+ int i;
+ for(i=0;i<4;i++)ret[i]=oc_pack_read(_opb,8);
+ return ret[0]|ret[1]<<8|ret[2]<<16|ret[3]<<24;
+}
+
+static int oc_info_unpack(oc_pack_buf *_opb,th_info *_info){
+ long val;
+ /*Check the codec bitstream version.*/
+ val=oc_pack_read(_opb,8);
+ _info->version_major=(unsigned char)val;
+ val=oc_pack_read(_opb,8);
+ _info->version_minor=(unsigned char)val;
+ val=oc_pack_read(_opb,8);
+ _info->version_subminor=(unsigned char)val;
+ /*verify we can parse this bitstream version.
+ We accept earlier minors and all subminors, by spec*/
+ if(_info->version_major>TH_VERSION_MAJOR||
+ _info->version_major==TH_VERSION_MAJOR&&
+ _info->version_minor>TH_VERSION_MINOR){
+ return TH_EVERSION;
+ }
+ /*Read the encoded frame description.*/
+ val=oc_pack_read(_opb,16);
+ _info->frame_width=(ogg_uint32_t)val<<4;
+ val=oc_pack_read(_opb,16);
+ _info->frame_height=(ogg_uint32_t)val<<4;
+ val=oc_pack_read(_opb,24);
+ _info->pic_width=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,24);
+ _info->pic_height=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,8);
+ _info->pic_x=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,8);
+ _info->pic_y=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,32);
+ _info->fps_numerator=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,32);
+ _info->fps_denominator=(ogg_uint32_t)val;
+ if(_info->frame_width==0||_info->frame_height==0||
+ _info->pic_width+_info->pic_x>_info->frame_width||
+ _info->pic_height+_info->pic_y>_info->frame_height||
+ _info->fps_numerator==0||_info->fps_denominator==0){
+ return TH_EBADHEADER;
+ }
+ /*Note: The sense of pic_y is inverted in what we pass back to the
+ application compared to how it is stored in the bitstream.
+ This is because the bitstream uses a right-handed coordinate system, while
+ applications expect a left-handed one.*/
+ _info->pic_y=_info->frame_height-_info->pic_height-_info->pic_y;
+ val=oc_pack_read(_opb,24);
+ _info->aspect_numerator=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,24);
+ _info->aspect_denominator=(ogg_uint32_t)val;
+ val=oc_pack_read(_opb,8);
+ _info->colorspace=(th_colorspace)val;
+ val=oc_pack_read(_opb,24);
+ _info->target_bitrate=(int)val;
+ val=oc_pack_read(_opb,6);
+ _info->quality=(int)val;
+ val=oc_pack_read(_opb,5);
+ _info->keyframe_granule_shift=(int)val;
+ val=oc_pack_read(_opb,2);
+ _info->pixel_fmt=(th_pixel_fmt)val;
+ if(_info->pixel_fmt==TH_PF_RSVD)return TH_EBADHEADER;
+ val=oc_pack_read(_opb,3);
+ if(val!=0||oc_pack_bytes_left(_opb)<0)return TH_EBADHEADER;
+ return 0;
+}
+
+static int oc_comment_unpack(oc_pack_buf *_opb,th_comment *_tc){
+ long len;
+ int i;
+ /*Read the vendor string.*/
+ len=oc_unpack_length(_opb);
+ if(len<0||len>oc_pack_bytes_left(_opb))return TH_EBADHEADER;
+ _tc->vendor=_ogg_malloc((size_t)len+1);
+ if(_tc->vendor==NULL)return TH_EFAULT;
+ oc_unpack_octets(_opb,_tc->vendor,len);
+ _tc->vendor[len]='\0';
+ /*Read the user comments.*/
+ _tc->comments=(int)oc_unpack_length(_opb);
+ len=_tc->comments;
+ if(len<0||len>(LONG_MAX>>2)||len<<2>oc_pack_bytes_left(_opb)){
+ _tc->comments=0;
+ return TH_EBADHEADER;
+ }
+ _tc->comment_lengths=(int *)_ogg_malloc(
+ _tc->comments*sizeof(_tc->comment_lengths[0]));
+ _tc->user_comments=(char **)_ogg_malloc(
+ _tc->comments*sizeof(_tc->user_comments[0]));
+ if(_tc->comment_lengths==NULL||_tc->user_comments==NULL){
+ _tc->comments=0;
+ return TH_EFAULT;
+ }
+ for(i=0;i<_tc->comments;i++){
+ len=oc_unpack_length(_opb);
+ if(len<0||len>oc_pack_bytes_left(_opb)){
+ _tc->comments=i;
+ return TH_EBADHEADER;
+ }
+ _tc->comment_lengths[i]=len;
+ _tc->user_comments[i]=_ogg_malloc((size_t)len+1);
+ if(_tc->user_comments[i]==NULL){
+ _tc->comments=i;
+ return TH_EFAULT;
+ }
+ oc_unpack_octets(_opb,_tc->user_comments[i],len);
+ _tc->user_comments[i][len]='\0';
+ }
+ return oc_pack_bytes_left(_opb)<0?TH_EBADHEADER:0;
+}
+
+static int oc_setup_unpack(oc_pack_buf *_opb,th_setup_info *_setup){
+ int ret;
+ /*Read the quantizer tables.*/
+ ret=oc_quant_params_unpack(_opb,&_setup->qinfo);
+ if(ret<0)return ret;
+ /*Read the Huffman trees.*/
+ return oc_huff_trees_unpack(_opb,_setup->huff_tables);
+}
+
+static void oc_setup_clear(th_setup_info *_setup){
+ oc_quant_params_clear(&_setup->qinfo);
+ oc_huff_trees_clear(_setup->huff_tables);
+}
+
+static int oc_dec_headerin(oc_pack_buf *_opb,th_info *_info,
+ th_comment *_tc,th_setup_info **_setup,ogg_packet *_op){
+ char buffer[6];
+ long val;
+ int packtype;
+ int ret;
+ val=oc_pack_read(_opb,8);
+ packtype=(int)val;
+ /*If we're at a data packet and we have received all three headers, we're
+ done.*/
+ if(!(packtype&0x80)&&_info->frame_width>0&&_tc->vendor!=NULL&&*_setup!=NULL){
+ return 0;
+ }
+ /*Check the codec string.*/
+ oc_unpack_octets(_opb,buffer,6);
+ if(memcmp(buffer,"theora",6)!=0)return TH_ENOTFORMAT;
+ switch(packtype){
+ /*Codec info header.*/
+ case 0x80:{
+ /*This should be the first packet, and we should not already be
+ initialized.*/
+ if(!_op->b_o_s||_info->frame_width>0)return TH_EBADHEADER;
+ ret=oc_info_unpack(_opb,_info);
+ if(ret<0)th_info_clear(_info);
+ else ret=3;
+ }break;
+ /*Comment header.*/
+ case 0x81:{
+ if(_tc==NULL)return TH_EFAULT;
+ /*We shoud have already decoded the info header, and should not yet have
+ decoded the comment header.*/
+ if(_info->frame_width==0||_tc->vendor!=NULL)return TH_EBADHEADER;
+ ret=oc_comment_unpack(_opb,_tc);
+ if(ret<0)th_comment_clear(_tc);
+ else ret=2;
+ }break;
+ /*Codec setup header.*/
+ case 0x82:{
+ oc_setup_info *setup;
+ if(_tc==NULL||_setup==NULL)return TH_EFAULT;
+ /*We should have already decoded the info header and the comment header,
+ and should not yet have decoded the setup header.*/
+ if(_info->frame_width==0||_tc->vendor==NULL||*_setup!=NULL){
+ return TH_EBADHEADER;
+ }
+ setup=(oc_setup_info *)_ogg_calloc(1,sizeof(*setup));
+ if(setup==NULL)return TH_EFAULT;
+ ret=oc_setup_unpack(_opb,setup);
+ if(ret<0){
+ oc_setup_clear(setup);
+ _ogg_free(setup);
+ }
+ else{
+ *_setup=setup;
+ ret=1;
+ }
+ }break;
+ default:{
+ /*We don't know what this header is.*/
+ return TH_EBADHEADER;
+ }break;
+ }
+ return ret;
+}
+
+
+/*Decodes one header packet.
+ This should be called repeatedly with the packets at the beginning of the
+ stream until it returns 0.*/
+int th_decode_headerin(th_info *_info,th_comment *_tc,
+ th_setup_info **_setup,ogg_packet *_op){
+ oc_pack_buf opb;
+ if(_op==NULL)return TH_EBADHEADER;
+ if(_info==NULL)return TH_EFAULT;
+ oc_pack_readinit(&opb,_op->packet,_op->bytes);
+ return oc_dec_headerin(&opb,_info,_tc,_setup,_op);
+}
+
+void th_setup_free(th_setup_info *_setup){
+ if(_setup!=NULL){
+ oc_setup_clear(_setup);
+ _ogg_free(_setup);
+ }
+}
diff --git a/media/libtheora/lib/decint.h b/media/libtheora/lib/decint.h
new file mode 100644
index 000000000..bd6522273
--- /dev/null
+++ b/media/libtheora/lib/decint.h
@@ -0,0 +1,186 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: decint.h 17457 2010-09-24 02:05:49Z tterribe $
+
+ ********************************************************************/
+
+#include <limits.h>
+#if !defined(_decint_H)
+# define _decint_H (1)
+# include "theora/theoradec.h"
+# include "state.h"
+# include "bitpack.h"
+# include "huffdec.h"
+# include "dequant.h"
+
+typedef struct th_setup_info oc_setup_info;
+typedef struct oc_dec_opt_vtable oc_dec_opt_vtable;
+typedef struct oc_dec_pipeline_state oc_dec_pipeline_state;
+typedef struct th_dec_ctx oc_dec_ctx;
+
+
+
+/*Decoder-specific accelerated functions.*/
+# if defined(OC_C64X_ASM)
+# include "c64x/c64xdec.h"
+# endif
+
+# if !defined(oc_dec_accel_init)
+# define oc_dec_accel_init oc_dec_accel_init_c
+# endif
+# if defined(OC_DEC_USE_VTABLE)
+# if !defined(oc_dec_dc_unpredict_mcu_plane)
+# define oc_dec_dc_unpredict_mcu_plane(_dec,_pipe,_pli) \
+ ((*(_dec)->opt_vtable.dc_unpredict_mcu_plane)(_dec,_pipe,_pli))
+# endif
+# else
+# if !defined(oc_dec_dc_unpredict_mcu_plane)
+# define oc_dec_dc_unpredict_mcu_plane oc_dec_dc_unpredict_mcu_plane_c
+# endif
+# endif
+
+
+
+/*Constants for the packet-in state machine specific to the decoder.*/
+
+/*Next packet to read: Data packet.*/
+#define OC_PACKET_DATA (0)
+
+
+
+struct th_setup_info{
+ /*The Huffman codes.*/
+ ogg_int16_t *huff_tables[TH_NHUFFMAN_TABLES];
+ /*The quantization parameters.*/
+ th_quant_info qinfo;
+};
+
+
+
+/*Decoder specific functions with accelerated variants.*/
+struct oc_dec_opt_vtable{
+ void (*dc_unpredict_mcu_plane)(oc_dec_ctx *_dec,
+ oc_dec_pipeline_state *_pipe,int _pli);
+};
+
+
+
+struct oc_dec_pipeline_state{
+ /*Decoded DCT coefficients.
+ These are placed here instead of on the stack so that they can persist
+ between blocks, which makes clearing them back to zero much faster when
+ only a few non-zero coefficients were decoded.
+ It requires at least 65 elements because the zig-zag index array uses the
+ 65th element as a dumping ground for out-of-range indices to protect us
+ from buffer overflow.
+ We make it fully twice as large so that the second half can serve as the
+ reconstruction buffer, which saves passing another parameter to all the
+ acceleration functios.
+ It also solves problems with 16-byte alignment for NEON on ARM.
+ gcc (as of 4.2.1) only seems to be able to give stack variables 8-byte
+ alignment, and silently produces incorrect results if you ask for 16.
+ Finally, keeping it off the stack means there's less likely to be a data
+ hazard beween the NEON co-processor and the regular ARM core, which avoids
+ unnecessary stalls.*/
+ OC_ALIGN16(ogg_int16_t dct_coeffs[128]);
+ OC_ALIGN16(signed char bounding_values[256]);
+ ptrdiff_t ti[3][64];
+ ptrdiff_t ebi[3][64];
+ ptrdiff_t eob_runs[3][64];
+ const ptrdiff_t *coded_fragis[3];
+ const ptrdiff_t *uncoded_fragis[3];
+ ptrdiff_t ncoded_fragis[3];
+ ptrdiff_t nuncoded_fragis[3];
+ const ogg_uint16_t *dequant[3][3][2];
+ int fragy0[3];
+ int fragy_end[3];
+ int pred_last[3][4];
+ int mcu_nvfrags;
+ int loop_filter;
+ int pp_level;
+};
+
+
+struct th_dec_ctx{
+ /*Shared encoder/decoder state.*/
+ oc_theora_state state;
+ /*Whether or not packets are ready to be emitted.
+ This takes on negative values while there are remaining header packets to
+ be emitted, reaches 0 when the codec is ready for input, and goes to 1
+ when a frame has been processed and a data packet is ready.*/
+ int packet_state;
+ /*Buffer in which to assemble packets.*/
+ oc_pack_buf opb;
+ /*Huffman decode trees.*/
+ ogg_int16_t *huff_tables[TH_NHUFFMAN_TABLES];
+ /*The index of the first token in each plane for each coefficient.*/
+ ptrdiff_t ti0[3][64];
+ /*The number of outstanding EOB runs at the start of each coefficient in each
+ plane.*/
+ ptrdiff_t eob_runs[3][64];
+ /*The DCT token lists.*/
+ unsigned char *dct_tokens;
+ /*The extra bits associated with DCT tokens.*/
+ unsigned char *extra_bits;
+ /*The number of dct tokens unpacked so far.*/
+ int dct_tokens_count;
+ /*The out-of-loop post-processing level.*/
+ int pp_level;
+ /*The DC scale used for out-of-loop deblocking.*/
+ int pp_dc_scale[64];
+ /*The sharpen modifier used for out-of-loop deringing.*/
+ int pp_sharp_mod[64];
+ /*The DC quantization index of each block.*/
+ unsigned char *dc_qis;
+ /*The variance of each block.*/
+ int *variances;
+ /*The storage for the post-processed frame buffer.*/
+ unsigned char *pp_frame_data;
+ /*Whether or not the post-processsed frame buffer has space for chroma.*/
+ int pp_frame_state;
+ /*The buffer used for the post-processed frame.
+ Note that this is _not_ guaranteed to have the same strides and offsets as
+ the reference frame buffers.*/
+ th_ycbcr_buffer pp_frame_buf;
+ /*The striped decode callback function.*/
+ th_stripe_callback stripe_cb;
+ oc_dec_pipeline_state pipe;
+# if defined(OC_DEC_USE_VTABLE)
+ /*Table for decoder acceleration functions.*/
+ oc_dec_opt_vtable opt_vtable;
+# endif
+# if defined(HAVE_CAIRO)
+ /*Output metrics for debugging.*/
+ int telemetry;
+ int telemetry_mbmode;
+ int telemetry_mv;
+ int telemetry_qi;
+ int telemetry_bits;
+ int telemetry_frame_bytes;
+ int telemetry_coding_bytes;
+ int telemetry_mode_bytes;
+ int telemetry_mv_bytes;
+ int telemetry_qi_bytes;
+ int telemetry_dc_bytes;
+ unsigned char *telemetry_frame_data;
+# endif
+};
+
+/*Default pure-C implementations of decoder-specific accelerated functions.*/
+void oc_dec_accel_init_c(oc_dec_ctx *_dec);
+
+void oc_dec_dc_unpredict_mcu_plane_c(oc_dec_ctx *_dec,
+ oc_dec_pipeline_state *_pipe,int _pli);
+
+#endif
diff --git a/media/libtheora/lib/decode.c b/media/libtheora/lib/decode.c
new file mode 100644
index 000000000..563782b7a
--- /dev/null
+++ b/media/libtheora/lib/decode.c
@@ -0,0 +1,2963 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: decode.c 17576 2010-10-29 01:07:51Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <ogg/ogg.h>
+#include "decint.h"
+#if defined(OC_DUMP_IMAGES)
+# include <stdio.h>
+# include "png.h"
+#endif
+#if defined(HAVE_CAIRO)
+# include <cairo.h>
+#endif
+
+
+/*No post-processing.*/
+#define OC_PP_LEVEL_DISABLED (0)
+/*Keep track of DC qi for each block only.*/
+#define OC_PP_LEVEL_TRACKDCQI (1)
+/*Deblock the luma plane.*/
+#define OC_PP_LEVEL_DEBLOCKY (2)
+/*Dering the luma plane.*/
+#define OC_PP_LEVEL_DERINGY (3)
+/*Stronger luma plane deringing.*/
+#define OC_PP_LEVEL_SDERINGY (4)
+/*Deblock the chroma planes.*/
+#define OC_PP_LEVEL_DEBLOCKC (5)
+/*Dering the chroma planes.*/
+#define OC_PP_LEVEL_DERINGC (6)
+/*Stronger chroma plane deringing.*/
+#define OC_PP_LEVEL_SDERINGC (7)
+/*Maximum valid post-processing level.*/
+#define OC_PP_LEVEL_MAX (7)
+
+
+
+/*The mode alphabets for the various mode coding schemes.
+ Scheme 0 uses a custom alphabet, which is not stored in this table.*/
+static const unsigned char OC_MODE_ALPHABETS[7][OC_NMODES]={
+ /*Last MV dominates */
+ {
+ OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV_LAST2,OC_MODE_INTER_MV,
+ OC_MODE_INTER_NOMV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
+ OC_MODE_INTER_MV_FOUR
+ },
+ {
+ OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV_LAST2,OC_MODE_INTER_NOMV,
+ OC_MODE_INTER_MV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
+ OC_MODE_INTER_MV_FOUR
+ },
+ {
+ OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV,OC_MODE_INTER_MV_LAST2,
+ OC_MODE_INTER_NOMV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
+ OC_MODE_INTER_MV_FOUR
+ },
+ {
+ OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV,OC_MODE_INTER_NOMV,
+ OC_MODE_INTER_MV_LAST2,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,
+ OC_MODE_GOLDEN_MV,OC_MODE_INTER_MV_FOUR
+ },
+ /*No MV dominates.*/
+ {
+ OC_MODE_INTER_NOMV,OC_MODE_INTER_MV_LAST,OC_MODE_INTER_MV_LAST2,
+ OC_MODE_INTER_MV,OC_MODE_INTRA,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
+ OC_MODE_INTER_MV_FOUR
+ },
+ {
+ OC_MODE_INTER_NOMV,OC_MODE_GOLDEN_NOMV,OC_MODE_INTER_MV_LAST,
+ OC_MODE_INTER_MV_LAST2,OC_MODE_INTER_MV,OC_MODE_INTRA,OC_MODE_GOLDEN_MV,
+ OC_MODE_INTER_MV_FOUR
+ },
+ /*Default ordering.*/
+ {
+ OC_MODE_INTER_NOMV,OC_MODE_INTRA,OC_MODE_INTER_MV,OC_MODE_INTER_MV_LAST,
+ OC_MODE_INTER_MV_LAST2,OC_MODE_GOLDEN_NOMV,OC_MODE_GOLDEN_MV,
+ OC_MODE_INTER_MV_FOUR
+ }
+};
+
+
+/*The original DCT tokens are extended and reordered during the construction of
+ the Huffman tables.
+ The extension means more bits can be read with fewer calls to the bitpacker
+ during the Huffman decoding process (at the cost of larger Huffman tables),
+ and fewer tokens require additional extra bits (reducing the average storage
+ per decoded token).
+ The revised ordering reveals essential information in the token value
+ itself; specifically, whether or not there are additional extra bits to read
+ and the parameter to which those extra bits are applied.
+ The token is used to fetch a code word from the OC_DCT_CODE_WORD table below.
+ The extra bits are added into code word at the bit position inferred from the
+ token value, giving the final code word from which all required parameters
+ are derived.
+ The number of EOBs and the leading zero run length can be extracted directly.
+ The coefficient magnitude is optionally negated before extraction, according
+ to a 'flip' bit.*/
+
+/*The number of additional extra bits that are decoded with each of the
+ internal DCT tokens.*/
+static const unsigned char OC_INTERNAL_DCT_TOKEN_EXTRA_BITS[15]={
+ 12,4,3,3,4,4,5,5,8,8,8,8,3,3,6
+};
+
+/*Whether or not an internal token needs any additional extra bits.*/
+#define OC_DCT_TOKEN_NEEDS_MORE(token) \
+ (token<(int)(sizeof(OC_INTERNAL_DCT_TOKEN_EXTRA_BITS)/ \
+ sizeof(*OC_INTERNAL_DCT_TOKEN_EXTRA_BITS)))
+
+/*This token (OC_DCT_REPEAT_RUN3_TOKEN) requires more than 8 extra bits.*/
+#define OC_DCT_TOKEN_FAT_EOB (0)
+
+/*The number of EOBs to use for an end-of-frame token.
+ Note: We want to set eobs to PTRDIFF_MAX here, but that requires C99, which
+ is not yet available everywhere; this should be equivalent.*/
+#define OC_DCT_EOB_FINISH (~(size_t)0>>1)
+
+/*The location of the (6) run length bits in the code word.
+ These are placed at index 0 and given 8 bits (even though 6 would suffice)
+ because it may be faster to extract the lower byte on some platforms.*/
+#define OC_DCT_CW_RLEN_SHIFT (0)
+/*The location of the (12) EOB bits in the code word.*/
+#define OC_DCT_CW_EOB_SHIFT (8)
+/*The location of the (1) flip bit in the code word.
+ This must be right under the magnitude bits.*/
+#define OC_DCT_CW_FLIP_BIT (20)
+/*The location of the (11) token magnitude bits in the code word.
+ These must be last, and rely on a sign-extending right shift.*/
+#define OC_DCT_CW_MAG_SHIFT (21)
+
+/*Pack the given fields into a code word.*/
+#define OC_DCT_CW_PACK(_eobs,_rlen,_mag,_flip) \
+ ((_eobs)<<OC_DCT_CW_EOB_SHIFT| \
+ (_rlen)<<OC_DCT_CW_RLEN_SHIFT| \
+ (_flip)<<OC_DCT_CW_FLIP_BIT| \
+ (_mag)-(_flip)<<OC_DCT_CW_MAG_SHIFT)
+
+/*A special code word value that signals the end of the frame (a long EOB run
+ of zero).*/
+#define OC_DCT_CW_FINISH (0)
+
+/*The position at which to insert the extra bits in the code word.
+ We use this formulation because Intel has no useful cmov.
+ A real architecture would probably do better with two of those.
+ This translates to 11 instructions(!), and is _still_ faster than either a
+ table lookup (just barely) or the naive double-ternary implementation (which
+ gcc translates to a jump and a cmov).
+ This assumes OC_DCT_CW_RLEN_SHIFT is zero, but could easily be reworked if
+ you want to make one of the other shifts zero.*/
+#define OC_DCT_TOKEN_EB_POS(_token) \
+ ((OC_DCT_CW_EOB_SHIFT-OC_DCT_CW_MAG_SHIFT&-((_token)<2)) \
+ +(OC_DCT_CW_MAG_SHIFT&-((_token)<12)))
+
+/*The code words for each internal token.
+ See the notes at OC_DCT_TOKEN_MAP for the reasons why things are out of
+ order.*/
+static const ogg_int32_t OC_DCT_CODE_WORD[92]={
+ /*These tokens require additional extra bits for the EOB count.*/
+ /*OC_DCT_REPEAT_RUN3_TOKEN (12 extra bits)*/
+ OC_DCT_CW_FINISH,
+ /*OC_DCT_REPEAT_RUN2_TOKEN (4 extra bits)*/
+ OC_DCT_CW_PACK(16, 0, 0,0),
+ /*These tokens require additional extra bits for the magnitude.*/
+ /*OC_DCT_VAL_CAT5 (4 extra bits-1 already read)*/
+ OC_DCT_CW_PACK( 0, 0, 13,0),
+ OC_DCT_CW_PACK( 0, 0, 13,1),
+ /*OC_DCT_VAL_CAT6 (5 extra bits-1 already read)*/
+ OC_DCT_CW_PACK( 0, 0, 21,0),
+ OC_DCT_CW_PACK( 0, 0, 21,1),
+ /*OC_DCT_VAL_CAT7 (6 extra bits-1 already read)*/
+ OC_DCT_CW_PACK( 0, 0, 37,0),
+ OC_DCT_CW_PACK( 0, 0, 37,1),
+ /*OC_DCT_VAL_CAT8 (10 extra bits-2 already read)*/
+ OC_DCT_CW_PACK( 0, 0, 69,0),
+ OC_DCT_CW_PACK( 0, 0,325,0),
+ OC_DCT_CW_PACK( 0, 0, 69,1),
+ OC_DCT_CW_PACK( 0, 0,325,1),
+ /*These tokens require additional extra bits for the run length.*/
+ /*OC_DCT_RUN_CAT1C (4 extra bits-1 already read)*/
+ OC_DCT_CW_PACK( 0,10, +1,0),
+ OC_DCT_CW_PACK( 0,10, -1,0),
+ /*OC_DCT_ZRL_TOKEN (6 extra bits)
+ Flip is set to distinguish this from OC_DCT_CW_FINISH.*/
+ OC_DCT_CW_PACK( 0, 0, 0,1),
+ /*The remaining tokens require no additional extra bits.*/
+ /*OC_DCT_EOB1_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 1, 0, 0,0),
+ /*OC_DCT_EOB2_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 2, 0, 0,0),
+ /*OC_DCT_EOB3_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 3, 0, 0,0),
+ /*OC_DCT_RUN_CAT1A (1 extra bit-1 already read)x5*/
+ OC_DCT_CW_PACK( 0, 1, +1,0),
+ OC_DCT_CW_PACK( 0, 1, -1,0),
+ OC_DCT_CW_PACK( 0, 2, +1,0),
+ OC_DCT_CW_PACK( 0, 2, -1,0),
+ OC_DCT_CW_PACK( 0, 3, +1,0),
+ OC_DCT_CW_PACK( 0, 3, -1,0),
+ OC_DCT_CW_PACK( 0, 4, +1,0),
+ OC_DCT_CW_PACK( 0, 4, -1,0),
+ OC_DCT_CW_PACK( 0, 5, +1,0),
+ OC_DCT_CW_PACK( 0, 5, -1,0),
+ /*OC_DCT_RUN_CAT2A (2 extra bits-2 already read)*/
+ OC_DCT_CW_PACK( 0, 1, +2,0),
+ OC_DCT_CW_PACK( 0, 1, +3,0),
+ OC_DCT_CW_PACK( 0, 1, -2,0),
+ OC_DCT_CW_PACK( 0, 1, -3,0),
+ /*OC_DCT_RUN_CAT1B (3 extra bits-3 already read)*/
+ OC_DCT_CW_PACK( 0, 6, +1,0),
+ OC_DCT_CW_PACK( 0, 7, +1,0),
+ OC_DCT_CW_PACK( 0, 8, +1,0),
+ OC_DCT_CW_PACK( 0, 9, +1,0),
+ OC_DCT_CW_PACK( 0, 6, -1,0),
+ OC_DCT_CW_PACK( 0, 7, -1,0),
+ OC_DCT_CW_PACK( 0, 8, -1,0),
+ OC_DCT_CW_PACK( 0, 9, -1,0),
+ /*OC_DCT_RUN_CAT2B (3 extra bits-3 already read)*/
+ OC_DCT_CW_PACK( 0, 2, +2,0),
+ OC_DCT_CW_PACK( 0, 3, +2,0),
+ OC_DCT_CW_PACK( 0, 2, +3,0),
+ OC_DCT_CW_PACK( 0, 3, +3,0),
+ OC_DCT_CW_PACK( 0, 2, -2,0),
+ OC_DCT_CW_PACK( 0, 3, -2,0),
+ OC_DCT_CW_PACK( 0, 2, -3,0),
+ OC_DCT_CW_PACK( 0, 3, -3,0),
+ /*OC_DCT_SHORT_ZRL_TOKEN (3 extra bits-3 already read)
+ Flip is set on the first one to distinguish it from OC_DCT_CW_FINISH.*/
+ OC_DCT_CW_PACK( 0, 0, 0,1),
+ OC_DCT_CW_PACK( 0, 1, 0,0),
+ OC_DCT_CW_PACK( 0, 2, 0,0),
+ OC_DCT_CW_PACK( 0, 3, 0,0),
+ OC_DCT_CW_PACK( 0, 4, 0,0),
+ OC_DCT_CW_PACK( 0, 5, 0,0),
+ OC_DCT_CW_PACK( 0, 6, 0,0),
+ OC_DCT_CW_PACK( 0, 7, 0,0),
+ /*OC_ONE_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 0, 0, +1,0),
+ /*OC_MINUS_ONE_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 0, 0, -1,0),
+ /*OC_TWO_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 0, 0, +2,0),
+ /*OC_MINUS_TWO_TOKEN (0 extra bits)*/
+ OC_DCT_CW_PACK( 0, 0, -2,0),
+ /*OC_DCT_VAL_CAT2 (1 extra bit-1 already read)x4*/
+ OC_DCT_CW_PACK( 0, 0, +3,0),
+ OC_DCT_CW_PACK( 0, 0, -3,0),
+ OC_DCT_CW_PACK( 0, 0, +4,0),
+ OC_DCT_CW_PACK( 0, 0, -4,0),
+ OC_DCT_CW_PACK( 0, 0, +5,0),
+ OC_DCT_CW_PACK( 0, 0, -5,0),
+ OC_DCT_CW_PACK( 0, 0, +6,0),
+ OC_DCT_CW_PACK( 0, 0, -6,0),
+ /*OC_DCT_VAL_CAT3 (2 extra bits-2 already read)*/
+ OC_DCT_CW_PACK( 0, 0, +7,0),
+ OC_DCT_CW_PACK( 0, 0, +8,0),
+ OC_DCT_CW_PACK( 0, 0, -7,0),
+ OC_DCT_CW_PACK( 0, 0, -8,0),
+ /*OC_DCT_VAL_CAT4 (3 extra bits-3 already read)*/
+ OC_DCT_CW_PACK( 0, 0, +9,0),
+ OC_DCT_CW_PACK( 0, 0,+10,0),
+ OC_DCT_CW_PACK( 0, 0,+11,0),
+ OC_DCT_CW_PACK( 0, 0,+12,0),
+ OC_DCT_CW_PACK( 0, 0, -9,0),
+ OC_DCT_CW_PACK( 0, 0,-10,0),
+ OC_DCT_CW_PACK( 0, 0,-11,0),
+ OC_DCT_CW_PACK( 0, 0,-12,0),
+ /*OC_DCT_REPEAT_RUN1_TOKEN (3 extra bits-3 already read)*/
+ OC_DCT_CW_PACK( 8, 0, 0,0),
+ OC_DCT_CW_PACK( 9, 0, 0,0),
+ OC_DCT_CW_PACK(10, 0, 0,0),
+ OC_DCT_CW_PACK(11, 0, 0,0),
+ OC_DCT_CW_PACK(12, 0, 0,0),
+ OC_DCT_CW_PACK(13, 0, 0,0),
+ OC_DCT_CW_PACK(14, 0, 0,0),
+ OC_DCT_CW_PACK(15, 0, 0,0),
+ /*OC_DCT_REPEAT_RUN0_TOKEN (2 extra bits-2 already read)*/
+ OC_DCT_CW_PACK( 4, 0, 0,0),
+ OC_DCT_CW_PACK( 5, 0, 0,0),
+ OC_DCT_CW_PACK( 6, 0, 0,0),
+ OC_DCT_CW_PACK( 7, 0, 0,0),
+};
+
+
+
+static int oc_sb_run_unpack(oc_pack_buf *_opb){
+ /*Coding scheme:
+ Codeword Run Length
+ 0 1
+ 10x 2-3
+ 110x 4-5
+ 1110xx 6-9
+ 11110xxx 10-17
+ 111110xxxx 18-33
+ 111111xxxxxxxxxxxx 34-4129*/
+ static const ogg_int16_t OC_SB_RUN_TREE[22]={
+ 4,
+ -(1<<8|1),-(1<<8|1),-(1<<8|1),-(1<<8|1),
+ -(1<<8|1),-(1<<8|1),-(1<<8|1),-(1<<8|1),
+ -(3<<8|2),-(3<<8|2),-(3<<8|3),-(3<<8|3),
+ -(4<<8|4),-(4<<8|5),-(4<<8|2<<4|6-6),17,
+ 2,
+ -(2<<8|2<<4|10-6),-(2<<8|2<<4|14-6),-(2<<8|4<<4|18-6),-(2<<8|12<<4|34-6)
+ };
+ int ret;
+ ret=oc_huff_token_decode(_opb,OC_SB_RUN_TREE);
+ if(ret>=0x10){
+ int offs;
+ offs=ret&0x1F;
+ ret=6+offs+(int)oc_pack_read(_opb,ret-offs>>4);
+ }
+ return ret;
+}
+
+static int oc_block_run_unpack(oc_pack_buf *_opb){
+ /*Coding scheme:
+ Codeword Run Length
+ 0x 1-2
+ 10x 3-4
+ 110x 5-6
+ 1110xx 7-10
+ 11110xx 11-14
+ 11111xxxx 15-30*/
+ static const ogg_int16_t OC_BLOCK_RUN_TREE[61]={
+ 5,
+ -(2<<8|1),-(2<<8|1),-(2<<8|1),-(2<<8|1),
+ -(2<<8|1),-(2<<8|1),-(2<<8|1),-(2<<8|1),
+ -(2<<8|2),-(2<<8|2),-(2<<8|2),-(2<<8|2),
+ -(2<<8|2),-(2<<8|2),-(2<<8|2),-(2<<8|2),
+ -(3<<8|3),-(3<<8|3),-(3<<8|3),-(3<<8|3),
+ -(3<<8|4),-(3<<8|4),-(3<<8|4),-(3<<8|4),
+ -(4<<8|5),-(4<<8|5),-(4<<8|6),-(4<<8|6),
+ 33, 36, 39, 44,
+ 1,-(1<<8|7),-(1<<8|8),
+ 1,-(1<<8|9),-(1<<8|10),
+ 2,-(2<<8|11),-(2<<8|12),-(2<<8|13),-(2<<8|14),
+ 4,
+ -(4<<8|15),-(4<<8|16),-(4<<8|17),-(4<<8|18),
+ -(4<<8|19),-(4<<8|20),-(4<<8|21),-(4<<8|22),
+ -(4<<8|23),-(4<<8|24),-(4<<8|25),-(4<<8|26),
+ -(4<<8|27),-(4<<8|28),-(4<<8|29),-(4<<8|30)
+ };
+ return oc_huff_token_decode(_opb,OC_BLOCK_RUN_TREE);
+}
+
+
+
+void oc_dec_accel_init_c(oc_dec_ctx *_dec){
+# if defined(OC_DEC_USE_VTABLE)
+ _dec->opt_vtable.dc_unpredict_mcu_plane=
+ oc_dec_dc_unpredict_mcu_plane_c;
+# endif
+}
+
+static int oc_dec_init(oc_dec_ctx *_dec,const th_info *_info,
+ const th_setup_info *_setup){
+ int qti;
+ int pli;
+ int qi;
+ int ret;
+ ret=oc_state_init(&_dec->state,_info,3);
+ if(ret<0)return ret;
+ ret=oc_huff_trees_copy(_dec->huff_tables,
+ (const ogg_int16_t *const *)_setup->huff_tables);
+ if(ret<0){
+ oc_state_clear(&_dec->state);
+ return ret;
+ }
+ /*For each fragment, allocate one byte for every DCT coefficient token, plus
+ one byte for extra-bits for each token, plus one more byte for the long
+ EOB run, just in case it's the very last token and has a run length of
+ one.*/
+ _dec->dct_tokens=(unsigned char *)_ogg_malloc((64+64+1)*
+ _dec->state.nfrags*sizeof(_dec->dct_tokens[0]));
+ if(_dec->dct_tokens==NULL){
+ oc_huff_trees_clear(_dec->huff_tables);
+ oc_state_clear(&_dec->state);
+ return TH_EFAULT;
+ }
+ for(qi=0;qi<64;qi++)for(pli=0;pli<3;pli++)for(qti=0;qti<2;qti++){
+ _dec->state.dequant_tables[qi][pli][qti]=
+ _dec->state.dequant_table_data[qi][pli][qti];
+ }
+ oc_dequant_tables_init(_dec->state.dequant_tables,_dec->pp_dc_scale,
+ &_setup->qinfo);
+ for(qi=0;qi<64;qi++){
+ int qsum;
+ qsum=0;
+ for(qti=0;qti<2;qti++)for(pli=0;pli<3;pli++){
+ qsum+=_dec->state.dequant_tables[qi][pli][qti][12]+
+ _dec->state.dequant_tables[qi][pli][qti][17]+
+ _dec->state.dequant_tables[qi][pli][qti][18]+
+ _dec->state.dequant_tables[qi][pli][qti][24]<<(pli==0);
+ }
+ _dec->pp_sharp_mod[qi]=-(qsum>>11);
+ }
+ memcpy(_dec->state.loop_filter_limits,_setup->qinfo.loop_filter_limits,
+ sizeof(_dec->state.loop_filter_limits));
+ oc_dec_accel_init(_dec);
+ _dec->pp_level=OC_PP_LEVEL_DISABLED;
+ _dec->dc_qis=NULL;
+ _dec->variances=NULL;
+ _dec->pp_frame_data=NULL;
+ _dec->stripe_cb.ctx=NULL;
+ _dec->stripe_cb.stripe_decoded=NULL;
+#if defined(HAVE_CAIRO)
+ _dec->telemetry=0;
+ _dec->telemetry_bits=0;
+ _dec->telemetry_qi=0;
+ _dec->telemetry_mbmode=0;
+ _dec->telemetry_mv=0;
+ _dec->telemetry_frame_data=NULL;
+#endif
+ return 0;
+}
+
+static void oc_dec_clear(oc_dec_ctx *_dec){
+#if defined(HAVE_CAIRO)
+ _ogg_free(_dec->telemetry_frame_data);
+#endif
+ _ogg_free(_dec->pp_frame_data);
+ _ogg_free(_dec->variances);
+ _ogg_free(_dec->dc_qis);
+ _ogg_free(_dec->dct_tokens);
+ oc_huff_trees_clear(_dec->huff_tables);
+ oc_state_clear(&_dec->state);
+}
+
+
+static int oc_dec_frame_header_unpack(oc_dec_ctx *_dec){
+ long val;
+ /*Check to make sure this is a data packet.*/
+ val=oc_pack_read1(&_dec->opb);
+ if(val!=0)return TH_EBADPACKET;
+ /*Read in the frame type (I or P).*/
+ val=oc_pack_read1(&_dec->opb);
+ _dec->state.frame_type=(int)val;
+ /*Read in the qi list.*/
+ val=oc_pack_read(&_dec->opb,6);
+ _dec->state.qis[0]=(unsigned char)val;
+ val=oc_pack_read1(&_dec->opb);
+ if(!val)_dec->state.nqis=1;
+ else{
+ val=oc_pack_read(&_dec->opb,6);
+ _dec->state.qis[1]=(unsigned char)val;
+ val=oc_pack_read1(&_dec->opb);
+ if(!val)_dec->state.nqis=2;
+ else{
+ val=oc_pack_read(&_dec->opb,6);
+ _dec->state.qis[2]=(unsigned char)val;
+ _dec->state.nqis=3;
+ }
+ }
+ if(_dec->state.frame_type==OC_INTRA_FRAME){
+ /*Keyframes have 3 unused configuration bits, holdovers from VP3 days.
+ Most of the other unused bits in the VP3 headers were eliminated.
+ I don't know why these remain.*/
+ /*I wanted to eliminate wasted bits, but not all config wiggle room
+ --Monty.*/
+ val=oc_pack_read(&_dec->opb,3);
+ if(val!=0)return TH_EIMPL;
+ }
+ return 0;
+}
+
+/*Mark all fragments as coded and in OC_MODE_INTRA.
+ This also builds up the coded fragment list (in coded order), and clears the
+ uncoded fragment list.
+ It does not update the coded macro block list nor the super block flags, as
+ those are not used when decoding INTRA frames.*/
+static void oc_dec_mark_all_intra(oc_dec_ctx *_dec){
+ const oc_sb_map *sb_maps;
+ const oc_sb_flags *sb_flags;
+ oc_fragment *frags;
+ ptrdiff_t *coded_fragis;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t prev_ncoded_fragis;
+ unsigned nsbs;
+ unsigned sbi;
+ int pli;
+ coded_fragis=_dec->state.coded_fragis;
+ prev_ncoded_fragis=ncoded_fragis=0;
+ sb_maps=(const oc_sb_map *)_dec->state.sb_maps;
+ sb_flags=_dec->state.sb_flags;
+ frags=_dec->state.frags;
+ sbi=nsbs=0;
+ for(pli=0;pli<3;pli++){
+ nsbs+=_dec->state.fplanes[pli].nsbs;
+ for(;sbi<nsbs;sbi++){
+ int quadi;
+ for(quadi=0;quadi<4;quadi++)if(sb_flags[sbi].quad_valid&1<<quadi){
+ int bi;
+ for(bi=0;bi<4;bi++){
+ ptrdiff_t fragi;
+ fragi=sb_maps[sbi][quadi][bi];
+ if(fragi>=0){
+ frags[fragi].coded=1;
+ frags[fragi].refi=OC_FRAME_SELF;
+ frags[fragi].mb_mode=OC_MODE_INTRA;
+ coded_fragis[ncoded_fragis++]=fragi;
+ }
+ }
+ }
+ }
+ _dec->state.ncoded_fragis[pli]=ncoded_fragis-prev_ncoded_fragis;
+ prev_ncoded_fragis=ncoded_fragis;
+ }
+ _dec->state.ntotal_coded_fragis=ncoded_fragis;
+}
+
+/*Decodes the bit flags indicating whether each super block is partially coded
+ or not.
+ Return: The number of partially coded super blocks.*/
+static unsigned oc_dec_partial_sb_flags_unpack(oc_dec_ctx *_dec){
+ oc_sb_flags *sb_flags;
+ unsigned nsbs;
+ unsigned sbi;
+ unsigned npartial;
+ unsigned run_count;
+ long val;
+ int flag;
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ sb_flags=_dec->state.sb_flags;
+ nsbs=_dec->state.nsbs;
+ sbi=npartial=0;
+ while(sbi<nsbs){
+ int full_run;
+ run_count=oc_sb_run_unpack(&_dec->opb);
+ full_run=run_count>=4129;
+ do{
+ sb_flags[sbi].coded_partially=flag;
+ sb_flags[sbi].coded_fully=0;
+ npartial+=flag;
+ sbi++;
+ }
+ while(--run_count>0&&sbi<nsbs);
+ if(full_run&&sbi<nsbs){
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ }
+ else flag=!flag;
+ }
+ /*TODO: run_count should be 0 here.
+ If it's not, we should issue a warning of some kind.*/
+ return npartial;
+}
+
+/*Decodes the bit flags for whether or not each non-partially-coded super
+ block is fully coded or not.
+ This function should only be called if there is at least one
+ non-partially-coded super block.
+ Return: The number of partially coded super blocks.*/
+static void oc_dec_coded_sb_flags_unpack(oc_dec_ctx *_dec){
+ oc_sb_flags *sb_flags;
+ unsigned nsbs;
+ unsigned sbi;
+ unsigned run_count;
+ long val;
+ int flag;
+ sb_flags=_dec->state.sb_flags;
+ nsbs=_dec->state.nsbs;
+ /*Skip partially coded super blocks.*/
+ for(sbi=0;sb_flags[sbi].coded_partially;sbi++);
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ do{
+ int full_run;
+ run_count=oc_sb_run_unpack(&_dec->opb);
+ full_run=run_count>=4129;
+ for(;sbi<nsbs;sbi++){
+ if(sb_flags[sbi].coded_partially)continue;
+ if(run_count--<=0)break;
+ sb_flags[sbi].coded_fully=flag;
+ }
+ if(full_run&&sbi<nsbs){
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ }
+ else flag=!flag;
+ }
+ while(sbi<nsbs);
+ /*TODO: run_count should be 0 here.
+ If it's not, we should issue a warning of some kind.*/
+}
+
+static void oc_dec_coded_flags_unpack(oc_dec_ctx *_dec){
+ const oc_sb_map *sb_maps;
+ const oc_sb_flags *sb_flags;
+ signed char *mb_modes;
+ oc_fragment *frags;
+ unsigned nsbs;
+ unsigned sbi;
+ unsigned npartial;
+ long val;
+ int pli;
+ int flag;
+ int run_count;
+ ptrdiff_t *coded_fragis;
+ ptrdiff_t *uncoded_fragis;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t nuncoded_fragis;
+ ptrdiff_t prev_ncoded_fragis;
+ npartial=oc_dec_partial_sb_flags_unpack(_dec);
+ if(npartial<_dec->state.nsbs)oc_dec_coded_sb_flags_unpack(_dec);
+ if(npartial>0){
+ val=oc_pack_read1(&_dec->opb);
+ flag=!(int)val;
+ }
+ else flag=0;
+ sb_maps=(const oc_sb_map *)_dec->state.sb_maps;
+ sb_flags=_dec->state.sb_flags;
+ mb_modes=_dec->state.mb_modes;
+ frags=_dec->state.frags;
+ sbi=nsbs=run_count=0;
+ coded_fragis=_dec->state.coded_fragis;
+ uncoded_fragis=coded_fragis+_dec->state.nfrags;
+ prev_ncoded_fragis=ncoded_fragis=nuncoded_fragis=0;
+ for(pli=0;pli<3;pli++){
+ nsbs+=_dec->state.fplanes[pli].nsbs;
+ for(;sbi<nsbs;sbi++){
+ int quadi;
+ for(quadi=0;quadi<4;quadi++)if(sb_flags[sbi].quad_valid&1<<quadi){
+ int quad_coded;
+ int bi;
+ quad_coded=0;
+ for(bi=0;bi<4;bi++){
+ ptrdiff_t fragi;
+ fragi=sb_maps[sbi][quadi][bi];
+ if(fragi>=0){
+ int coded;
+ if(sb_flags[sbi].coded_fully)coded=1;
+ else if(!sb_flags[sbi].coded_partially)coded=0;
+ else{
+ if(run_count<=0){
+ run_count=oc_block_run_unpack(&_dec->opb);
+ flag=!flag;
+ }
+ run_count--;
+ coded=flag;
+ }
+ if(coded)coded_fragis[ncoded_fragis++]=fragi;
+ else *(uncoded_fragis-++nuncoded_fragis)=fragi;
+ quad_coded|=coded;
+ frags[fragi].coded=coded;
+ frags[fragi].refi=OC_FRAME_NONE;
+ }
+ }
+ /*Remember if there's a coded luma block in this macro block.*/
+ if(!pli)mb_modes[sbi<<2|quadi]=quad_coded;
+ }
+ }
+ _dec->state.ncoded_fragis[pli]=ncoded_fragis-prev_ncoded_fragis;
+ prev_ncoded_fragis=ncoded_fragis;
+ }
+ _dec->state.ntotal_coded_fragis=ncoded_fragis;
+ /*TODO: run_count should be 0 here.
+ If it's not, we should issue a warning of some kind.*/
+}
+
+
+/*Coding scheme:
+ Codeword Mode Index
+ 0 0
+ 10 1
+ 110 2
+ 1110 3
+ 11110 4
+ 111110 5
+ 1111110 6
+ 1111111 7*/
+static const ogg_int16_t OC_VLC_MODE_TREE[26]={
+ 4,
+ -(1<<8|0),-(1<<8|0),-(1<<8|0),-(1<<8|0),
+ -(1<<8|0),-(1<<8|0),-(1<<8|0),-(1<<8|0),
+ -(2<<8|1),-(2<<8|1),-(2<<8|1),-(2<<8|1),
+ -(3<<8|2),-(3<<8|2),-(4<<8|3),17,
+ 3,
+ -(1<<8|4),-(1<<8|4),-(1<<8|4),-(1<<8|4),
+ -(2<<8|5),-(2<<8|5),-(3<<8|6),-(3<<8|7)
+};
+
+static const ogg_int16_t OC_CLC_MODE_TREE[9]={
+ 3,
+ -(3<<8|0),-(3<<8|1),-(3<<8|2),-(3<<8|3),
+ -(3<<8|4),-(3<<8|5),-(3<<8|6),-(3<<8|7)
+};
+
+/*Unpacks the list of macro block modes for INTER frames.*/
+static void oc_dec_mb_modes_unpack(oc_dec_ctx *_dec){
+ signed char *mb_modes;
+ const unsigned char *alphabet;
+ unsigned char scheme0_alphabet[8];
+ const ogg_int16_t *mode_tree;
+ size_t nmbs;
+ size_t mbi;
+ long val;
+ int mode_scheme;
+ val=oc_pack_read(&_dec->opb,3);
+ mode_scheme=(int)val;
+ if(mode_scheme==0){
+ int mi;
+ /*Just in case, initialize the modes to something.
+ If the bitstream doesn't contain each index exactly once, it's likely
+ corrupt and the rest of the packet is garbage anyway, but this way we
+ won't crash, and we'll decode SOMETHING.*/
+ /*LOOP VECTORIZES*/
+ for(mi=0;mi<OC_NMODES;mi++)scheme0_alphabet[mi]=OC_MODE_INTER_NOMV;
+ for(mi=0;mi<OC_NMODES;mi++){
+ val=oc_pack_read(&_dec->opb,3);
+ scheme0_alphabet[val]=OC_MODE_ALPHABETS[6][mi];
+ }
+ alphabet=scheme0_alphabet;
+ }
+ else alphabet=OC_MODE_ALPHABETS[mode_scheme-1];
+ mode_tree=mode_scheme==7?OC_CLC_MODE_TREE:OC_VLC_MODE_TREE;
+ mb_modes=_dec->state.mb_modes;
+ nmbs=_dec->state.nmbs;
+ for(mbi=0;mbi<nmbs;mbi++){
+ if(mb_modes[mbi]>0){
+ /*We have a coded luma block; decode a mode.*/
+ mb_modes[mbi]=alphabet[oc_huff_token_decode(&_dec->opb,mode_tree)];
+ }
+ /*For other valid macro blocks, INTER_NOMV is forced, but we rely on the
+ fact that OC_MODE_INTER_NOMV is already 0.*/
+ }
+}
+
+
+
+static const ogg_int16_t OC_VLC_MV_COMP_TREE[101]={
+ 5,
+ -(3<<8|32+0),-(3<<8|32+0),-(3<<8|32+0),-(3<<8|32+0),
+ -(3<<8|32+1),-(3<<8|32+1),-(3<<8|32+1),-(3<<8|32+1),
+ -(3<<8|32-1),-(3<<8|32-1),-(3<<8|32-1),-(3<<8|32-1),
+ -(4<<8|32+2),-(4<<8|32+2),-(4<<8|32-2),-(4<<8|32-2),
+ -(4<<8|32+3),-(4<<8|32+3),-(4<<8|32-3),-(4<<8|32-3),
+ 33, 36, 39, 42,
+ 45, 50, 55, 60,
+ 65, 74, 83, 92,
+ 1,-(1<<8|32+4),-(1<<8|32-4),
+ 1,-(1<<8|32+5),-(1<<8|32-5),
+ 1,-(1<<8|32+6),-(1<<8|32-6),
+ 1,-(1<<8|32+7),-(1<<8|32-7),
+ 2,-(2<<8|32+8),-(2<<8|32-8),-(2<<8|32+9),-(2<<8|32-9),
+ 2,-(2<<8|32+10),-(2<<8|32-10),-(2<<8|32+11),-(2<<8|32-11),
+ 2,-(2<<8|32+12),-(2<<8|32-12),-(2<<8|32+13),-(2<<8|32-13),
+ 2,-(2<<8|32+14),-(2<<8|32-14),-(2<<8|32+15),-(2<<8|32-15),
+ 3,
+ -(3<<8|32+16),-(3<<8|32-16),-(3<<8|32+17),-(3<<8|32-17),
+ -(3<<8|32+18),-(3<<8|32-18),-(3<<8|32+19),-(3<<8|32-19),
+ 3,
+ -(3<<8|32+20),-(3<<8|32-20),-(3<<8|32+21),-(3<<8|32-21),
+ -(3<<8|32+22),-(3<<8|32-22),-(3<<8|32+23),-(3<<8|32-23),
+ 3,
+ -(3<<8|32+24),-(3<<8|32-24),-(3<<8|32+25),-(3<<8|32-25),
+ -(3<<8|32+26),-(3<<8|32-26),-(3<<8|32+27),-(3<<8|32-27),
+ 3,
+ -(3<<8|32+28),-(3<<8|32-28),-(3<<8|32+29),-(3<<8|32-29),
+ -(3<<8|32+30),-(3<<8|32-30),-(3<<8|32+31),-(3<<8|32-31)
+};
+
+static const ogg_int16_t OC_CLC_MV_COMP_TREE[65]={
+ 6,
+ -(6<<8|32 +0),-(6<<8|32 -0),-(6<<8|32 +1),-(6<<8|32 -1),
+ -(6<<8|32 +2),-(6<<8|32 -2),-(6<<8|32 +3),-(6<<8|32 -3),
+ -(6<<8|32 +4),-(6<<8|32 -4),-(6<<8|32 +5),-(6<<8|32 -5),
+ -(6<<8|32 +6),-(6<<8|32 -6),-(6<<8|32 +7),-(6<<8|32 -7),
+ -(6<<8|32 +8),-(6<<8|32 -8),-(6<<8|32 +9),-(6<<8|32 -9),
+ -(6<<8|32+10),-(6<<8|32-10),-(6<<8|32+11),-(6<<8|32-11),
+ -(6<<8|32+12),-(6<<8|32-12),-(6<<8|32+13),-(6<<8|32-13),
+ -(6<<8|32+14),-(6<<8|32-14),-(6<<8|32+15),-(6<<8|32-15),
+ -(6<<8|32+16),-(6<<8|32-16),-(6<<8|32+17),-(6<<8|32-17),
+ -(6<<8|32+18),-(6<<8|32-18),-(6<<8|32+19),-(6<<8|32-19),
+ -(6<<8|32+20),-(6<<8|32-20),-(6<<8|32+21),-(6<<8|32-21),
+ -(6<<8|32+22),-(6<<8|32-22),-(6<<8|32+23),-(6<<8|32-23),
+ -(6<<8|32+24),-(6<<8|32-24),-(6<<8|32+25),-(6<<8|32-25),
+ -(6<<8|32+26),-(6<<8|32-26),-(6<<8|32+27),-(6<<8|32-27),
+ -(6<<8|32+28),-(6<<8|32-28),-(6<<8|32+29),-(6<<8|32-29),
+ -(6<<8|32+30),-(6<<8|32-30),-(6<<8|32+31),-(6<<8|32-31)
+};
+
+
+static oc_mv oc_mv_unpack(oc_pack_buf *_opb,const ogg_int16_t *_tree){
+ int dx;
+ int dy;
+ dx=oc_huff_token_decode(_opb,_tree)-32;
+ dy=oc_huff_token_decode(_opb,_tree)-32;
+ return OC_MV(dx,dy);
+}
+
+/*Unpacks the list of motion vectors for INTER frames, and propagtes the macro
+ block modes and motion vectors to the individual fragments.*/
+static void oc_dec_mv_unpack_and_frag_modes_fill(oc_dec_ctx *_dec){
+ const oc_mb_map *mb_maps;
+ const signed char *mb_modes;
+ oc_set_chroma_mvs_func set_chroma_mvs;
+ const ogg_int16_t *mv_comp_tree;
+ oc_fragment *frags;
+ oc_mv *frag_mvs;
+ const unsigned char *map_idxs;
+ int map_nidxs;
+ oc_mv last_mv;
+ oc_mv prior_mv;
+ oc_mv cbmvs[4];
+ size_t nmbs;
+ size_t mbi;
+ long val;
+ set_chroma_mvs=OC_SET_CHROMA_MVS_TABLE[_dec->state.info.pixel_fmt];
+ val=oc_pack_read1(&_dec->opb);
+ mv_comp_tree=val?OC_CLC_MV_COMP_TREE:OC_VLC_MV_COMP_TREE;
+ map_idxs=OC_MB_MAP_IDXS[_dec->state.info.pixel_fmt];
+ map_nidxs=OC_MB_MAP_NIDXS[_dec->state.info.pixel_fmt];
+ prior_mv=last_mv=0;
+ frags=_dec->state.frags;
+ frag_mvs=_dec->state.frag_mvs;
+ mb_maps=(const oc_mb_map *)_dec->state.mb_maps;
+ mb_modes=_dec->state.mb_modes;
+ nmbs=_dec->state.nmbs;
+ for(mbi=0;mbi<nmbs;mbi++){
+ int mb_mode;
+ mb_mode=mb_modes[mbi];
+ if(mb_mode!=OC_MODE_INVALID){
+ oc_mv mbmv;
+ ptrdiff_t fragi;
+ int mapi;
+ int mapii;
+ int refi;
+ if(mb_mode==OC_MODE_INTER_MV_FOUR){
+ oc_mv lbmvs[4];
+ int bi;
+ prior_mv=last_mv;
+ for(bi=0;bi<4;bi++){
+ fragi=mb_maps[mbi][0][bi];
+ if(frags[fragi].coded){
+ frags[fragi].refi=OC_FRAME_PREV;
+ frags[fragi].mb_mode=OC_MODE_INTER_MV_FOUR;
+ lbmvs[bi]=last_mv=oc_mv_unpack(&_dec->opb,mv_comp_tree);
+ frag_mvs[fragi]=lbmvs[bi];
+ }
+ else lbmvs[bi]=0;
+ }
+ (*set_chroma_mvs)(cbmvs,lbmvs);
+ for(mapii=4;mapii<map_nidxs;mapii++){
+ mapi=map_idxs[mapii];
+ bi=mapi&3;
+ fragi=mb_maps[mbi][mapi>>2][bi];
+ if(frags[fragi].coded){
+ frags[fragi].refi=OC_FRAME_PREV;
+ frags[fragi].mb_mode=OC_MODE_INTER_MV_FOUR;
+ frag_mvs[fragi]=cbmvs[bi];
+ }
+ }
+ }
+ else{
+ switch(mb_mode){
+ case OC_MODE_INTER_MV:{
+ prior_mv=last_mv;
+ last_mv=mbmv=oc_mv_unpack(&_dec->opb,mv_comp_tree);
+ }break;
+ case OC_MODE_INTER_MV_LAST:mbmv=last_mv;break;
+ case OC_MODE_INTER_MV_LAST2:{
+ mbmv=prior_mv;
+ prior_mv=last_mv;
+ last_mv=mbmv;
+ }break;
+ case OC_MODE_GOLDEN_MV:{
+ mbmv=oc_mv_unpack(&_dec->opb,mv_comp_tree);
+ }break;
+ default:mbmv=0;break;
+ }
+ /*Fill in the MVs for the fragments.*/
+ refi=OC_FRAME_FOR_MODE(mb_mode);
+ mapii=0;
+ do{
+ mapi=map_idxs[mapii];
+ fragi=mb_maps[mbi][mapi>>2][mapi&3];
+ if(frags[fragi].coded){
+ frags[fragi].refi=refi;
+ frags[fragi].mb_mode=mb_mode;
+ frag_mvs[fragi]=mbmv;
+ }
+ }
+ while(++mapii<map_nidxs);
+ }
+ }
+ }
+}
+
+static void oc_dec_block_qis_unpack(oc_dec_ctx *_dec){
+ oc_fragment *frags;
+ const ptrdiff_t *coded_fragis;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t fragii;
+ ptrdiff_t fragi;
+ ncoded_fragis=_dec->state.ntotal_coded_fragis;
+ if(ncoded_fragis<=0)return;
+ frags=_dec->state.frags;
+ coded_fragis=_dec->state.coded_fragis;
+ if(_dec->state.nqis==1){
+ /*If this frame has only a single qi value, then just use it for all coded
+ fragments.*/
+ for(fragii=0;fragii<ncoded_fragis;fragii++){
+ frags[coded_fragis[fragii]].qii=0;
+ }
+ }
+ else{
+ long val;
+ int flag;
+ int nqi1;
+ int run_count;
+ /*Otherwise, we decode a qi index for each fragment, using two passes of
+ the same binary RLE scheme used for super-block coded bits.
+ The first pass marks each fragment as having a qii of 0 or greater than
+ 0, and the second pass (if necessary), distinguishes between a qii of
+ 1 and 2.
+ At first we just store the qii in the fragment.
+ After all the qii's are decoded, we make a final pass to replace them
+ with the corresponding qi's for this frame.*/
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ nqi1=0;
+ fragii=0;
+ while(fragii<ncoded_fragis){
+ int full_run;
+ run_count=oc_sb_run_unpack(&_dec->opb);
+ full_run=run_count>=4129;
+ do{
+ frags[coded_fragis[fragii++]].qii=flag;
+ nqi1+=flag;
+ }
+ while(--run_count>0&&fragii<ncoded_fragis);
+ if(full_run&&fragii<ncoded_fragis){
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ }
+ else flag=!flag;
+ }
+ /*TODO: run_count should be 0 here.
+ If it's not, we should issue a warning of some kind.*/
+ /*If we have 3 different qi's for this frame, and there was at least one
+ fragment with a non-zero qi, make the second pass.*/
+ if(_dec->state.nqis==3&&nqi1>0){
+ /*Skip qii==0 fragments.*/
+ for(fragii=0;frags[coded_fragis[fragii]].qii==0;fragii++);
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ do{
+ int full_run;
+ run_count=oc_sb_run_unpack(&_dec->opb);
+ full_run=run_count>=4129;
+ for(;fragii<ncoded_fragis;fragii++){
+ fragi=coded_fragis[fragii];
+ if(frags[fragi].qii==0)continue;
+ if(run_count--<=0)break;
+ frags[fragi].qii+=flag;
+ }
+ if(full_run&&fragii<ncoded_fragis){
+ val=oc_pack_read1(&_dec->opb);
+ flag=(int)val;
+ }
+ else flag=!flag;
+ }
+ while(fragii<ncoded_fragis);
+ /*TODO: run_count should be 0 here.
+ If it's not, we should issue a warning of some kind.*/
+ }
+ }
+}
+
+
+
+/*Unpacks the DC coefficient tokens.
+ Unlike when unpacking the AC coefficient tokens, we actually need to decode
+ the DC coefficient values now so that we can do DC prediction.
+ _huff_idx: The index of the Huffman table to use for each color plane.
+ _ntoks_left: The number of tokens left to be decoded in each color plane for
+ each coefficient.
+ This is updated as EOB tokens and zero run tokens are decoded.
+ Return: The length of any outstanding EOB run.*/
+static ptrdiff_t oc_dec_dc_coeff_unpack(oc_dec_ctx *_dec,int _huff_idxs[2],
+ ptrdiff_t _ntoks_left[3][64]){
+ unsigned char *dct_tokens;
+ oc_fragment *frags;
+ const ptrdiff_t *coded_fragis;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t fragii;
+ ptrdiff_t eobs;
+ ptrdiff_t ti;
+ int pli;
+ dct_tokens=_dec->dct_tokens;
+ frags=_dec->state.frags;
+ coded_fragis=_dec->state.coded_fragis;
+ ncoded_fragis=fragii=eobs=ti=0;
+ for(pli=0;pli<3;pli++){
+ ptrdiff_t run_counts[64];
+ ptrdiff_t eob_count;
+ ptrdiff_t eobi;
+ int rli;
+ ncoded_fragis+=_dec->state.ncoded_fragis[pli];
+ memset(run_counts,0,sizeof(run_counts));
+ _dec->eob_runs[pli][0]=eobs;
+ _dec->ti0[pli][0]=ti;
+ /*Continue any previous EOB run, if there was one.*/
+ eobi=eobs;
+ if(ncoded_fragis-fragii<eobi)eobi=ncoded_fragis-fragii;
+ eob_count=eobi;
+ eobs-=eobi;
+ while(eobi-->0)frags[coded_fragis[fragii++]].dc=0;
+ while(fragii<ncoded_fragis){
+ int token;
+ int cw;
+ int eb;
+ int skip;
+ token=oc_huff_token_decode(&_dec->opb,
+ _dec->huff_tables[_huff_idxs[pli+1>>1]]);
+ dct_tokens[ti++]=(unsigned char)token;
+ if(OC_DCT_TOKEN_NEEDS_MORE(token)){
+ eb=(int)oc_pack_read(&_dec->opb,
+ OC_INTERNAL_DCT_TOKEN_EXTRA_BITS[token]);
+ dct_tokens[ti++]=(unsigned char)eb;
+ if(token==OC_DCT_TOKEN_FAT_EOB)dct_tokens[ti++]=(unsigned char)(eb>>8);
+ eb<<=OC_DCT_TOKEN_EB_POS(token);
+ }
+ else eb=0;
+ cw=OC_DCT_CODE_WORD[token]+eb;
+ eobs=cw>>OC_DCT_CW_EOB_SHIFT&0xFFF;
+ if(cw==OC_DCT_CW_FINISH)eobs=OC_DCT_EOB_FINISH;
+ if(eobs){
+ eobi=OC_MINI(eobs,ncoded_fragis-fragii);
+ eob_count+=eobi;
+ eobs-=eobi;
+ while(eobi-->0)frags[coded_fragis[fragii++]].dc=0;
+ }
+ else{
+ int coeff;
+ skip=(unsigned char)(cw>>OC_DCT_CW_RLEN_SHIFT);
+ cw^=-(cw&1<<OC_DCT_CW_FLIP_BIT);
+ coeff=cw>>OC_DCT_CW_MAG_SHIFT;
+ if(skip)coeff=0;
+ run_counts[skip]++;
+ frags[coded_fragis[fragii++]].dc=coeff;
+ }
+ }
+ /*Add the total EOB count to the longest run length.*/
+ run_counts[63]+=eob_count;
+ /*And convert the run_counts array to a moment table.*/
+ for(rli=63;rli-->0;)run_counts[rli]+=run_counts[rli+1];
+ /*Finally, subtract off the number of coefficients that have been
+ accounted for by runs started in this coefficient.*/
+ for(rli=64;rli-->0;)_ntoks_left[pli][rli]-=run_counts[rli];
+ }
+ _dec->dct_tokens_count=ti;
+ return eobs;
+}
+
+/*Unpacks the AC coefficient tokens.
+ This can completely discard coefficient values while unpacking, and so is
+ somewhat simpler than unpacking the DC coefficient tokens.
+ _huff_idx: The index of the Huffman table to use for each color plane.
+ _ntoks_left: The number of tokens left to be decoded in each color plane for
+ each coefficient.
+ This is updated as EOB tokens and zero run tokens are decoded.
+ _eobs: The length of any outstanding EOB run from previous
+ coefficients.
+ Return: The length of any outstanding EOB run.*/
+static int oc_dec_ac_coeff_unpack(oc_dec_ctx *_dec,int _zzi,int _huff_idxs[2],
+ ptrdiff_t _ntoks_left[3][64],ptrdiff_t _eobs){
+ unsigned char *dct_tokens;
+ ptrdiff_t ti;
+ int pli;
+ dct_tokens=_dec->dct_tokens;
+ ti=_dec->dct_tokens_count;
+ for(pli=0;pli<3;pli++){
+ ptrdiff_t run_counts[64];
+ ptrdiff_t eob_count;
+ size_t ntoks_left;
+ size_t ntoks;
+ int rli;
+ _dec->eob_runs[pli][_zzi]=_eobs;
+ _dec->ti0[pli][_zzi]=ti;
+ ntoks_left=_ntoks_left[pli][_zzi];
+ memset(run_counts,0,sizeof(run_counts));
+ eob_count=0;
+ ntoks=0;
+ while(ntoks+_eobs<ntoks_left){
+ int token;
+ int cw;
+ int eb;
+ int skip;
+ ntoks+=_eobs;
+ eob_count+=_eobs;
+ token=oc_huff_token_decode(&_dec->opb,
+ _dec->huff_tables[_huff_idxs[pli+1>>1]]);
+ dct_tokens[ti++]=(unsigned char)token;
+ if(OC_DCT_TOKEN_NEEDS_MORE(token)){
+ eb=(int)oc_pack_read(&_dec->opb,
+ OC_INTERNAL_DCT_TOKEN_EXTRA_BITS[token]);
+ dct_tokens[ti++]=(unsigned char)eb;
+ if(token==OC_DCT_TOKEN_FAT_EOB)dct_tokens[ti++]=(unsigned char)(eb>>8);
+ eb<<=OC_DCT_TOKEN_EB_POS(token);
+ }
+ else eb=0;
+ cw=OC_DCT_CODE_WORD[token]+eb;
+ skip=(unsigned char)(cw>>OC_DCT_CW_RLEN_SHIFT);
+ _eobs=cw>>OC_DCT_CW_EOB_SHIFT&0xFFF;
+ if(cw==OC_DCT_CW_FINISH)_eobs=OC_DCT_EOB_FINISH;
+ if(_eobs==0){
+ run_counts[skip]++;
+ ntoks++;
+ }
+ }
+ /*Add the portion of the last EOB run actually used by this coefficient.*/
+ eob_count+=ntoks_left-ntoks;
+ /*And remove it from the remaining EOB count.*/
+ _eobs-=ntoks_left-ntoks;
+ /*Add the total EOB count to the longest run length.*/
+ run_counts[63]+=eob_count;
+ /*And convert the run_counts array to a moment table.*/
+ for(rli=63;rli-->0;)run_counts[rli]+=run_counts[rli+1];
+ /*Finally, subtract off the number of coefficients that have been
+ accounted for by runs started in this coefficient.*/
+ for(rli=64-_zzi;rli-->0;)_ntoks_left[pli][_zzi+rli]-=run_counts[rli];
+ }
+ _dec->dct_tokens_count=ti;
+ return _eobs;
+}
+
+/*Tokens describing the DCT coefficients that belong to each fragment are
+ stored in the bitstream grouped by coefficient, not by fragment.
+
+ This means that we either decode all the tokens in order, building up a
+ separate coefficient list for each fragment as we go, and then go back and
+ do the iDCT on each fragment, or we have to create separate lists of tokens
+ for each coefficient, so that we can pull the next token required off the
+ head of the appropriate list when decoding a specific fragment.
+
+ The former was VP3's choice, and it meant 2*w*h extra storage for all the
+ decoded coefficient values.
+
+ We take the second option, which lets us store just one to three bytes per
+ token (generally far fewer than the number of coefficients, due to EOB
+ tokens and zero runs), and which requires us to only maintain a counter for
+ each of the 64 coefficients, instead of a counter for every fragment to
+ determine where the next token goes.
+
+ We actually use 3 counters per coefficient, one for each color plane, so we
+ can decode all color planes simultaneously.
+ This lets color conversion, etc., be done as soon as a full MCU (one or
+ two super block rows) is decoded, while the image data is still in cache.*/
+
+static void oc_dec_residual_tokens_unpack(oc_dec_ctx *_dec){
+ static const unsigned char OC_HUFF_LIST_MAX[5]={1,6,15,28,64};
+ ptrdiff_t ntoks_left[3][64];
+ int huff_idxs[2];
+ ptrdiff_t eobs;
+ long val;
+ int pli;
+ int zzi;
+ int hgi;
+ for(pli=0;pli<3;pli++)for(zzi=0;zzi<64;zzi++){
+ ntoks_left[pli][zzi]=_dec->state.ncoded_fragis[pli];
+ }
+ val=oc_pack_read(&_dec->opb,4);
+ huff_idxs[0]=(int)val;
+ val=oc_pack_read(&_dec->opb,4);
+ huff_idxs[1]=(int)val;
+ _dec->eob_runs[0][0]=0;
+ eobs=oc_dec_dc_coeff_unpack(_dec,huff_idxs,ntoks_left);
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_dc_bytes=oc_pack_bytes_left(&_dec->opb);
+#endif
+ val=oc_pack_read(&_dec->opb,4);
+ huff_idxs[0]=(int)val;
+ val=oc_pack_read(&_dec->opb,4);
+ huff_idxs[1]=(int)val;
+ zzi=1;
+ for(hgi=1;hgi<5;hgi++){
+ huff_idxs[0]+=16;
+ huff_idxs[1]+=16;
+ for(;zzi<OC_HUFF_LIST_MAX[hgi];zzi++){
+ eobs=oc_dec_ac_coeff_unpack(_dec,zzi,huff_idxs,ntoks_left,eobs);
+ }
+ }
+ /*TODO: eobs should be exactly zero, or 4096 or greater.
+ The second case occurs when an EOB run of size zero is encountered, which
+ gets treated as an infinite EOB run (where infinity is PTRDIFF_MAX).
+ If neither of these conditions holds, then a warning should be issued.*/
+}
+
+
+static int oc_dec_postprocess_init(oc_dec_ctx *_dec){
+ /*pp_level 0: disabled; free any memory used and return*/
+ if(_dec->pp_level<=OC_PP_LEVEL_DISABLED){
+ if(_dec->dc_qis!=NULL){
+ _ogg_free(_dec->dc_qis);
+ _dec->dc_qis=NULL;
+ _ogg_free(_dec->variances);
+ _dec->variances=NULL;
+ _ogg_free(_dec->pp_frame_data);
+ _dec->pp_frame_data=NULL;
+ }
+ return 1;
+ }
+ if(_dec->dc_qis==NULL){
+ /*If we haven't been tracking DC quantization indices, there's no point in
+ starting now.*/
+ if(_dec->state.frame_type!=OC_INTRA_FRAME)return 1;
+ _dec->dc_qis=(unsigned char *)_ogg_malloc(
+ _dec->state.nfrags*sizeof(_dec->dc_qis[0]));
+ if(_dec->dc_qis==NULL)return 1;
+ memset(_dec->dc_qis,_dec->state.qis[0],_dec->state.nfrags);
+ }
+ else{
+ unsigned char *dc_qis;
+ const ptrdiff_t *coded_fragis;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t fragii;
+ unsigned char qi0;
+ /*Update the DC quantization index of each coded block.*/
+ dc_qis=_dec->dc_qis;
+ coded_fragis=_dec->state.coded_fragis;
+ ncoded_fragis=_dec->state.ncoded_fragis[0]+
+ _dec->state.ncoded_fragis[1]+_dec->state.ncoded_fragis[2];
+ qi0=(unsigned char)_dec->state.qis[0];
+ for(fragii=0;fragii<ncoded_fragis;fragii++){
+ dc_qis[coded_fragis[fragii]]=qi0;
+ }
+ }
+ /*pp_level 1: Stop after updating DC quantization indices.*/
+ if(_dec->pp_level<=OC_PP_LEVEL_TRACKDCQI){
+ if(_dec->variances!=NULL){
+ _ogg_free(_dec->variances);
+ _dec->variances=NULL;
+ _ogg_free(_dec->pp_frame_data);
+ _dec->pp_frame_data=NULL;
+ }
+ return 1;
+ }
+ if(_dec->variances==NULL){
+ size_t frame_sz;
+ size_t c_sz;
+ int c_w;
+ int c_h;
+ frame_sz=_dec->state.info.frame_width*(size_t)_dec->state.info.frame_height;
+ c_w=_dec->state.info.frame_width>>!(_dec->state.info.pixel_fmt&1);
+ c_h=_dec->state.info.frame_height>>!(_dec->state.info.pixel_fmt&2);
+ c_sz=c_w*(size_t)c_h;
+ /*Allocate space for the chroma planes, even if we're not going to use
+ them; this simplifies allocation state management, though it may waste
+ memory on the few systems that don't overcommit pages.*/
+ frame_sz+=c_sz<<1;
+ _dec->pp_frame_data=(unsigned char *)_ogg_malloc(
+ frame_sz*sizeof(_dec->pp_frame_data[0]));
+ _dec->variances=(int *)_ogg_malloc(
+ _dec->state.nfrags*sizeof(_dec->variances[0]));
+ if(_dec->variances==NULL||_dec->pp_frame_data==NULL){
+ _ogg_free(_dec->pp_frame_data);
+ _dec->pp_frame_data=NULL;
+ _ogg_free(_dec->variances);
+ _dec->variances=NULL;
+ return 1;
+ }
+ /*Force an update of the PP buffer pointers.*/
+ _dec->pp_frame_state=0;
+ }
+ /*Update the PP buffer pointers if necessary.*/
+ if(_dec->pp_frame_state!=1+(_dec->pp_level>=OC_PP_LEVEL_DEBLOCKC)){
+ if(_dec->pp_level<OC_PP_LEVEL_DEBLOCKC){
+ /*If chroma processing is disabled, just use the PP luma plane.*/
+ _dec->pp_frame_buf[0].width=_dec->state.info.frame_width;
+ _dec->pp_frame_buf[0].height=_dec->state.info.frame_height;
+ _dec->pp_frame_buf[0].stride=-_dec->pp_frame_buf[0].width;
+ _dec->pp_frame_buf[0].data=_dec->pp_frame_data+
+ (1-_dec->pp_frame_buf[0].height)*(ptrdiff_t)_dec->pp_frame_buf[0].stride;
+ }
+ else{
+ size_t y_sz;
+ size_t c_sz;
+ int c_w;
+ int c_h;
+ /*Otherwise, set up pointers to all three PP planes.*/
+ y_sz=_dec->state.info.frame_width*(size_t)_dec->state.info.frame_height;
+ c_w=_dec->state.info.frame_width>>!(_dec->state.info.pixel_fmt&1);
+ c_h=_dec->state.info.frame_height>>!(_dec->state.info.pixel_fmt&2);
+ c_sz=c_w*(size_t)c_h;
+ _dec->pp_frame_buf[0].width=_dec->state.info.frame_width;
+ _dec->pp_frame_buf[0].height=_dec->state.info.frame_height;
+ _dec->pp_frame_buf[0].stride=_dec->pp_frame_buf[0].width;
+ _dec->pp_frame_buf[0].data=_dec->pp_frame_data;
+ _dec->pp_frame_buf[1].width=c_w;
+ _dec->pp_frame_buf[1].height=c_h;
+ _dec->pp_frame_buf[1].stride=_dec->pp_frame_buf[1].width;
+ _dec->pp_frame_buf[1].data=_dec->pp_frame_buf[0].data+y_sz;
+ _dec->pp_frame_buf[2].width=c_w;
+ _dec->pp_frame_buf[2].height=c_h;
+ _dec->pp_frame_buf[2].stride=_dec->pp_frame_buf[2].width;
+ _dec->pp_frame_buf[2].data=_dec->pp_frame_buf[1].data+c_sz;
+ oc_ycbcr_buffer_flip(_dec->pp_frame_buf,_dec->pp_frame_buf);
+ }
+ _dec->pp_frame_state=1+(_dec->pp_level>=OC_PP_LEVEL_DEBLOCKC);
+ }
+ /*If we're not processing chroma, copy the reference frame's chroma planes.*/
+ if(_dec->pp_level<OC_PP_LEVEL_DEBLOCKC){
+ memcpy(_dec->pp_frame_buf+1,
+ _dec->state.ref_frame_bufs[_dec->state.ref_frame_idx[OC_FRAME_SELF]]+1,
+ sizeof(_dec->pp_frame_buf[1])*2);
+ }
+ return 0;
+}
+
+
+/*Initialize the main decoding pipeline.*/
+static void oc_dec_pipeline_init(oc_dec_ctx *_dec,
+ oc_dec_pipeline_state *_pipe){
+ const ptrdiff_t *coded_fragis;
+ const ptrdiff_t *uncoded_fragis;
+ int flimit;
+ int pli;
+ int qii;
+ int qti;
+ int zzi;
+ /*If chroma is sub-sampled in the vertical direction, we have to decode two
+ super block rows of Y' for each super block row of Cb and Cr.*/
+ _pipe->mcu_nvfrags=4<<!(_dec->state.info.pixel_fmt&2);
+ /*Initialize the token and extra bits indices for each plane and
+ coefficient.*/
+ memcpy(_pipe->ti,_dec->ti0,sizeof(_pipe->ti));
+ /*Also copy over the initial the EOB run counts.*/
+ memcpy(_pipe->eob_runs,_dec->eob_runs,sizeof(_pipe->eob_runs));
+ /*Set up per-plane pointers to the coded and uncoded fragments lists.*/
+ coded_fragis=_dec->state.coded_fragis;
+ uncoded_fragis=coded_fragis+_dec->state.nfrags;
+ for(pli=0;pli<3;pli++){
+ ptrdiff_t ncoded_fragis;
+ _pipe->coded_fragis[pli]=coded_fragis;
+ _pipe->uncoded_fragis[pli]=uncoded_fragis;
+ ncoded_fragis=_dec->state.ncoded_fragis[pli];
+ coded_fragis+=ncoded_fragis;
+ uncoded_fragis+=ncoded_fragis-_dec->state.fplanes[pli].nfrags;
+ }
+ /*Set up condensed quantizer tables.*/
+ for(pli=0;pli<3;pli++){
+ for(qii=0;qii<_dec->state.nqis;qii++){
+ for(qti=0;qti<2;qti++){
+ _pipe->dequant[pli][qii][qti]=
+ _dec->state.dequant_tables[_dec->state.qis[qii]][pli][qti];
+ }
+ }
+ }
+ /*Set the previous DC predictor to 0 for all color planes and frame types.*/
+ memset(_pipe->pred_last,0,sizeof(_pipe->pred_last));
+ /*Initialize the bounding value array for the loop filter.*/
+ flimit=_dec->state.loop_filter_limits[_dec->state.qis[0]];
+ _pipe->loop_filter=flimit!=0;
+ if(flimit!=0)oc_loop_filter_init(&_dec->state,_pipe->bounding_values,flimit);
+ /*Initialize any buffers needed for post-processing.
+ We also save the current post-processing level, to guard against the user
+ changing it from a callback.*/
+ if(!oc_dec_postprocess_init(_dec))_pipe->pp_level=_dec->pp_level;
+ /*If we don't have enough information to post-process, disable it, regardless
+ of the user-requested level.*/
+ else{
+ _pipe->pp_level=OC_PP_LEVEL_DISABLED;
+ memcpy(_dec->pp_frame_buf,
+ _dec->state.ref_frame_bufs[_dec->state.ref_frame_idx[OC_FRAME_SELF]],
+ sizeof(_dec->pp_frame_buf[0])*3);
+ }
+ /*Clear down the DCT coefficient buffer for the first block.*/
+ for(zzi=0;zzi<64;zzi++)_pipe->dct_coeffs[zzi]=0;
+}
+
+/*Undo the DC prediction in a single plane of an MCU (one or two super block
+ rows).
+ As a side effect, the number of coded and uncoded fragments in this plane of
+ the MCU is also computed.*/
+void oc_dec_dc_unpredict_mcu_plane_c(oc_dec_ctx *_dec,
+ oc_dec_pipeline_state *_pipe,int _pli){
+ const oc_fragment_plane *fplane;
+ oc_fragment *frags;
+ int *pred_last;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t fragi;
+ int fragx;
+ int fragy;
+ int fragy0;
+ int fragy_end;
+ int nhfrags;
+ /*Compute the first and last fragment row of the current MCU for this
+ plane.*/
+ fplane=_dec->state.fplanes+_pli;
+ fragy0=_pipe->fragy0[_pli];
+ fragy_end=_pipe->fragy_end[_pli];
+ nhfrags=fplane->nhfrags;
+ pred_last=_pipe->pred_last[_pli];
+ frags=_dec->state.frags;
+ ncoded_fragis=0;
+ fragi=fplane->froffset+fragy0*(ptrdiff_t)nhfrags;
+ for(fragy=fragy0;fragy<fragy_end;fragy++){
+ if(fragy==0){
+ /*For the first row, all of the cases reduce to just using the previous
+ predictor for the same reference frame.*/
+ for(fragx=0;fragx<nhfrags;fragx++,fragi++){
+ if(frags[fragi].coded){
+ int refi;
+ refi=frags[fragi].refi;
+ pred_last[refi]=frags[fragi].dc+=pred_last[refi];
+ ncoded_fragis++;
+ }
+ }
+ }
+ else{
+ oc_fragment *u_frags;
+ int l_ref;
+ int ul_ref;
+ int u_ref;
+ u_frags=frags-nhfrags;
+ l_ref=-1;
+ ul_ref=-1;
+ u_ref=u_frags[fragi].refi;
+ for(fragx=0;fragx<nhfrags;fragx++,fragi++){
+ int ur_ref;
+ if(fragx+1>=nhfrags)ur_ref=-1;
+ else ur_ref=u_frags[fragi+1].refi;
+ if(frags[fragi].coded){
+ int pred;
+ int refi;
+ refi=frags[fragi].refi;
+ /*We break out a separate case based on which of our neighbors use
+ the same reference frames.
+ This is somewhat faster than trying to make a generic case which
+ handles all of them, since it reduces lots of poorly predicted
+ jumps to one switch statement, and also lets a number of the
+ multiplications be optimized out by strength reduction.*/
+ switch((l_ref==refi)|(ul_ref==refi)<<1|
+ (u_ref==refi)<<2|(ur_ref==refi)<<3){
+ default:pred=pred_last[refi];break;
+ case 1:
+ case 3:pred=frags[fragi-1].dc;break;
+ case 2:pred=u_frags[fragi-1].dc;break;
+ case 4:
+ case 6:
+ case 12:pred=u_frags[fragi].dc;break;
+ case 5:pred=(frags[fragi-1].dc+u_frags[fragi].dc)/2;break;
+ case 8:pred=u_frags[fragi+1].dc;break;
+ case 9:
+ case 11:
+ case 13:{
+ /*The TI compiler mis-compiles this line.*/
+ pred=(75*frags[fragi-1].dc+53*u_frags[fragi+1].dc)/128;
+ }break;
+ case 10:pred=(u_frags[fragi-1].dc+u_frags[fragi+1].dc)/2;break;
+ case 14:{
+ pred=(3*(u_frags[fragi-1].dc+u_frags[fragi+1].dc)
+ +10*u_frags[fragi].dc)/16;
+ }break;
+ case 7:
+ case 15:{
+ int p0;
+ int p1;
+ int p2;
+ p0=frags[fragi-1].dc;
+ p1=u_frags[fragi-1].dc;
+ p2=u_frags[fragi].dc;
+ pred=(29*(p0+p2)-26*p1)/32;
+ if(abs(pred-p2)>128)pred=p2;
+ else if(abs(pred-p0)>128)pred=p0;
+ else if(abs(pred-p1)>128)pred=p1;
+ }break;
+ }
+ pred_last[refi]=frags[fragi].dc+=pred;
+ ncoded_fragis++;
+ l_ref=refi;
+ }
+ else l_ref=-1;
+ ul_ref=u_ref;
+ u_ref=ur_ref;
+ }
+ }
+ }
+ _pipe->ncoded_fragis[_pli]=ncoded_fragis;
+ /*Also save the number of uncoded fragments so we know how many to copy.*/
+ _pipe->nuncoded_fragis[_pli]=
+ (fragy_end-fragy0)*(ptrdiff_t)nhfrags-ncoded_fragis;
+}
+
+/*Reconstructs all coded fragments in a single MCU (one or two super block
+ rows).
+ This requires that each coded fragment have a proper macro block mode and
+ motion vector (if not in INTRA mode), and have its DC value decoded, with
+ the DC prediction process reversed, and the number of coded and uncoded
+ fragments in this plane of the MCU be counted.
+ The token lists for each color plane and coefficient should also be filled
+ in, along with initial token offsets, extra bits offsets, and EOB run
+ counts.*/
+static void oc_dec_frags_recon_mcu_plane(oc_dec_ctx *_dec,
+ oc_dec_pipeline_state *_pipe,int _pli){
+ unsigned char *dct_tokens;
+ const unsigned char *dct_fzig_zag;
+ ogg_uint16_t dc_quant[2];
+ const oc_fragment *frags;
+ const ptrdiff_t *coded_fragis;
+ ptrdiff_t ncoded_fragis;
+ ptrdiff_t fragii;
+ ptrdiff_t *ti;
+ ptrdiff_t *eob_runs;
+ int qti;
+ dct_tokens=_dec->dct_tokens;
+ dct_fzig_zag=_dec->state.opt_data.dct_fzig_zag;
+ frags=_dec->state.frags;
+ coded_fragis=_pipe->coded_fragis[_pli];
+ ncoded_fragis=_pipe->ncoded_fragis[_pli];
+ ti=_pipe->ti[_pli];
+ eob_runs=_pipe->eob_runs[_pli];
+ for(qti=0;qti<2;qti++)dc_quant[qti]=_pipe->dequant[_pli][0][qti][0];
+ for(fragii=0;fragii<ncoded_fragis;fragii++){
+ const ogg_uint16_t *ac_quant;
+ ptrdiff_t fragi;
+ int last_zzi;
+ int zzi;
+ fragi=coded_fragis[fragii];
+ qti=frags[fragi].mb_mode!=OC_MODE_INTRA;
+ ac_quant=_pipe->dequant[_pli][frags[fragi].qii][qti];
+ /*Decode the AC coefficients.*/
+ for(zzi=0;zzi<64;){
+ int token;
+ last_zzi=zzi;
+ if(eob_runs[zzi]){
+ eob_runs[zzi]--;
+ break;
+ }
+ else{
+ ptrdiff_t eob;
+ int cw;
+ int rlen;
+ int coeff;
+ int lti;
+ lti=ti[zzi];
+ token=dct_tokens[lti++];
+ cw=OC_DCT_CODE_WORD[token];
+ /*These parts could be done branchless, but the branches are fairly
+ predictable and the C code translates into more than a few
+ instructions, so it's worth it to avoid them.*/
+ if(OC_DCT_TOKEN_NEEDS_MORE(token)){
+ cw+=dct_tokens[lti++]<<OC_DCT_TOKEN_EB_POS(token);
+ }
+ eob=cw>>OC_DCT_CW_EOB_SHIFT&0xFFF;
+ if(token==OC_DCT_TOKEN_FAT_EOB){
+ eob+=dct_tokens[lti++]<<8;
+ if(eob==0)eob=OC_DCT_EOB_FINISH;
+ }
+ rlen=(unsigned char)(cw>>OC_DCT_CW_RLEN_SHIFT);
+ cw^=-(cw&1<<OC_DCT_CW_FLIP_BIT);
+ coeff=cw>>OC_DCT_CW_MAG_SHIFT;
+ eob_runs[zzi]=eob;
+ ti[zzi]=lti;
+ zzi+=rlen;
+ _pipe->dct_coeffs[dct_fzig_zag[zzi]]=
+ (ogg_int16_t)(coeff*(int)ac_quant[zzi]);
+ zzi+=!eob;
+ }
+ }
+ /*TODO: zzi should be exactly 64 here.
+ If it's not, we should report some kind of warning.*/
+ zzi=OC_MINI(zzi,64);
+ _pipe->dct_coeffs[0]=(ogg_int16_t)frags[fragi].dc;
+ /*last_zzi is always initialized.
+ If your compiler thinks otherwise, it is dumb.*/
+ oc_state_frag_recon(&_dec->state,fragi,_pli,
+ _pipe->dct_coeffs,last_zzi,dc_quant[qti]);
+ }
+ _pipe->coded_fragis[_pli]+=ncoded_fragis;
+ /*Right now the reconstructed MCU has only the coded blocks in it.*/
+ /*TODO: We make the decision here to always copy the uncoded blocks into it
+ from the reference frame.
+ We could also copy the coded blocks back over the reference frame, if we
+ wait for an additional MCU to be decoded, which might be faster if only a
+ small number of blocks are coded.
+ However, this introduces more latency, creating a larger cache footprint.
+ It's unknown which decision is better, but this one results in simpler
+ code, and the hard case (high bitrate, high resolution) is handled
+ correctly.*/
+ /*Copy the uncoded blocks from the previous reference frame.*/
+ if(_pipe->nuncoded_fragis[_pli]>0){
+ _pipe->uncoded_fragis[_pli]-=_pipe->nuncoded_fragis[_pli];
+ oc_frag_copy_list(&_dec->state,
+ _dec->state.ref_frame_data[OC_FRAME_SELF],
+ _dec->state.ref_frame_data[OC_FRAME_PREV],
+ _dec->state.ref_ystride[_pli],_pipe->uncoded_fragis[_pli],
+ _pipe->nuncoded_fragis[_pli],_dec->state.frag_buf_offs);
+ }
+}
+
+/*Filter a horizontal block edge.*/
+static void oc_filter_hedge(unsigned char *_dst,int _dst_ystride,
+ const unsigned char *_src,int _src_ystride,int _qstep,int _flimit,
+ int *_variance0,int *_variance1){
+ unsigned char *rdst;
+ const unsigned char *rsrc;
+ unsigned char *cdst;
+ const unsigned char *csrc;
+ int r[10];
+ int sum0;
+ int sum1;
+ int bx;
+ int by;
+ rdst=_dst;
+ rsrc=_src;
+ for(bx=0;bx<8;bx++){
+ cdst=rdst;
+ csrc=rsrc;
+ for(by=0;by<10;by++){
+ r[by]=*csrc;
+ csrc+=_src_ystride;
+ }
+ sum0=sum1=0;
+ for(by=0;by<4;by++){
+ sum0+=abs(r[by+1]-r[by]);
+ sum1+=abs(r[by+5]-r[by+6]);
+ }
+ *_variance0+=OC_MINI(255,sum0);
+ *_variance1+=OC_MINI(255,sum1);
+ if(sum0<_flimit&&sum1<_flimit&&r[5]-r[4]<_qstep&&r[4]-r[5]<_qstep){
+ *cdst=(unsigned char)(r[0]*3+r[1]*2+r[2]+r[3]+r[4]+4>>3);
+ cdst+=_dst_ystride;
+ *cdst=(unsigned char)(r[0]*2+r[1]+r[2]*2+r[3]+r[4]+r[5]+4>>3);
+ cdst+=_dst_ystride;
+ for(by=0;by<4;by++){
+ *cdst=(unsigned char)(r[by]+r[by+1]+r[by+2]+r[by+3]*2+
+ r[by+4]+r[by+5]+r[by+6]+4>>3);
+ cdst+=_dst_ystride;
+ }
+ *cdst=(unsigned char)(r[4]+r[5]+r[6]+r[7]*2+r[8]+r[9]*2+4>>3);
+ cdst+=_dst_ystride;
+ *cdst=(unsigned char)(r[5]+r[6]+r[7]+r[8]*2+r[9]*3+4>>3);
+ }
+ else{
+ for(by=1;by<=8;by++){
+ *cdst=(unsigned char)r[by];
+ cdst+=_dst_ystride;
+ }
+ }
+ rdst++;
+ rsrc++;
+ }
+}
+
+/*Filter a vertical block edge.*/
+static void oc_filter_vedge(unsigned char *_dst,int _dst_ystride,
+ int _qstep,int _flimit,int *_variances){
+ unsigned char *rdst;
+ const unsigned char *rsrc;
+ unsigned char *cdst;
+ int r[10];
+ int sum0;
+ int sum1;
+ int bx;
+ int by;
+ cdst=_dst;
+ for(by=0;by<8;by++){
+ rsrc=cdst-1;
+ rdst=cdst;
+ for(bx=0;bx<10;bx++)r[bx]=*rsrc++;
+ sum0=sum1=0;
+ for(bx=0;bx<4;bx++){
+ sum0+=abs(r[bx+1]-r[bx]);
+ sum1+=abs(r[bx+5]-r[bx+6]);
+ }
+ _variances[0]+=OC_MINI(255,sum0);
+ _variances[1]+=OC_MINI(255,sum1);
+ if(sum0<_flimit&&sum1<_flimit&&r[5]-r[4]<_qstep&&r[4]-r[5]<_qstep){
+ *rdst++=(unsigned char)(r[0]*3+r[1]*2+r[2]+r[3]+r[4]+4>>3);
+ *rdst++=(unsigned char)(r[0]*2+r[1]+r[2]*2+r[3]+r[4]+r[5]+4>>3);
+ for(bx=0;bx<4;bx++){
+ *rdst++=(unsigned char)(r[bx]+r[bx+1]+r[bx+2]+r[bx+3]*2+
+ r[bx+4]+r[bx+5]+r[bx+6]+4>>3);
+ }
+ *rdst++=(unsigned char)(r[4]+r[5]+r[6]+r[7]*2+r[8]+r[9]*2+4>>3);
+ *rdst=(unsigned char)(r[5]+r[6]+r[7]+r[8]*2+r[9]*3+4>>3);
+ }
+ cdst+=_dst_ystride;
+ }
+}
+
+static void oc_dec_deblock_frag_rows(oc_dec_ctx *_dec,
+ th_img_plane *_dst,th_img_plane *_src,int _pli,int _fragy0,
+ int _fragy_end){
+ oc_fragment_plane *fplane;
+ int *variance;
+ unsigned char *dc_qi;
+ unsigned char *dst;
+ const unsigned char *src;
+ ptrdiff_t froffset;
+ int dst_ystride;
+ int src_ystride;
+ int nhfrags;
+ int width;
+ int notstart;
+ int notdone;
+ int flimit;
+ int qstep;
+ int y_end;
+ int y;
+ int x;
+ _dst+=_pli;
+ _src+=_pli;
+ fplane=_dec->state.fplanes+_pli;
+ nhfrags=fplane->nhfrags;
+ froffset=fplane->froffset+_fragy0*(ptrdiff_t)nhfrags;
+ variance=_dec->variances+froffset;
+ dc_qi=_dec->dc_qis+froffset;
+ notstart=_fragy0>0;
+ notdone=_fragy_end<fplane->nvfrags;
+ /*We want to clear an extra row of variances, except at the end.*/
+ memset(variance+(nhfrags&-notstart),0,
+ (_fragy_end+notdone-_fragy0-notstart)*(nhfrags*sizeof(variance[0])));
+ /*Except for the first time, we want to point to the middle of the row.*/
+ y=(_fragy0<<3)+(notstart<<2);
+ dst_ystride=_dst->stride;
+ src_ystride=_src->stride;
+ dst=_dst->data+y*(ptrdiff_t)dst_ystride;
+ src=_src->data+y*(ptrdiff_t)src_ystride;
+ width=_dst->width;
+ for(;y<4;y++){
+ memcpy(dst,src,width*sizeof(dst[0]));
+ dst+=dst_ystride;
+ src+=src_ystride;
+ }
+ /*We also want to skip the last row in the frame for this loop.*/
+ y_end=_fragy_end-!notdone<<3;
+ for(;y<y_end;y+=8){
+ qstep=_dec->pp_dc_scale[*dc_qi];
+ flimit=(qstep*3)>>2;
+ oc_filter_hedge(dst,dst_ystride,src-src_ystride,src_ystride,
+ qstep,flimit,variance,variance+nhfrags);
+ variance++;
+ dc_qi++;
+ for(x=8;x<width;x+=8){
+ qstep=_dec->pp_dc_scale[*dc_qi];
+ flimit=(qstep*3)>>2;
+ oc_filter_hedge(dst+x,dst_ystride,src+x-src_ystride,src_ystride,
+ qstep,flimit,variance,variance+nhfrags);
+ oc_filter_vedge(dst+x-(dst_ystride<<2)-4,dst_ystride,
+ qstep,flimit,variance-1);
+ variance++;
+ dc_qi++;
+ }
+ dst+=dst_ystride<<3;
+ src+=src_ystride<<3;
+ }
+ /*And finally, handle the last row in the frame, if it's in the range.*/
+ if(!notdone){
+ int height;
+ height=_dst->height;
+ for(;y<height;y++){
+ memcpy(dst,src,width*sizeof(dst[0]));
+ dst+=dst_ystride;
+ src+=src_ystride;
+ }
+ /*Filter the last row of vertical block edges.*/
+ dc_qi++;
+ for(x=8;x<width;x+=8){
+ qstep=_dec->pp_dc_scale[*dc_qi++];
+ flimit=(qstep*3)>>2;
+ oc_filter_vedge(dst+x-(dst_ystride<<3)-4,dst_ystride,
+ qstep,flimit,variance++);
+ }
+ }
+}
+
+static void oc_dering_block(unsigned char *_idata,int _ystride,int _b,
+ int _dc_scale,int _sharp_mod,int _strong){
+ static const unsigned char OC_MOD_MAX[2]={24,32};
+ static const unsigned char OC_MOD_SHIFT[2]={1,0};
+ const unsigned char *psrc;
+ const unsigned char *src;
+ const unsigned char *nsrc;
+ unsigned char *dst;
+ int vmod[72];
+ int hmod[72];
+ int mod_hi;
+ int by;
+ int bx;
+ mod_hi=OC_MINI(3*_dc_scale,OC_MOD_MAX[_strong]);
+ dst=_idata;
+ src=dst;
+ psrc=src-(_ystride&-!(_b&4));
+ for(by=0;by<9;by++){
+ for(bx=0;bx<8;bx++){
+ int mod;
+ mod=32+_dc_scale-(abs(src[bx]-psrc[bx])<<OC_MOD_SHIFT[_strong]);
+ vmod[(by<<3)+bx]=mod<-64?_sharp_mod:OC_CLAMPI(0,mod,mod_hi);
+ }
+ psrc=src;
+ src+=_ystride&-(!(_b&8)|by<7);
+ }
+ nsrc=dst;
+ psrc=dst-!(_b&1);
+ for(bx=0;bx<9;bx++){
+ src=nsrc;
+ for(by=0;by<8;by++){
+ int mod;
+ mod=32+_dc_scale-(abs(*src-*psrc)<<OC_MOD_SHIFT[_strong]);
+ hmod[(bx<<3)+by]=mod<-64?_sharp_mod:OC_CLAMPI(0,mod,mod_hi);
+ psrc+=_ystride;
+ src+=_ystride;
+ }
+ psrc=nsrc;
+ nsrc+=!(_b&2)|bx<7;
+ }
+ src=dst;
+ psrc=src-(_ystride&-!(_b&4));
+ nsrc=src+_ystride;
+ for(by=0;by<8;by++){
+ int a;
+ int b;
+ int w;
+ a=128;
+ b=64;
+ w=hmod[by];
+ a-=w;
+ b+=w**(src-!(_b&1));
+ w=vmod[by<<3];
+ a-=w;
+ b+=w*psrc[0];
+ w=vmod[by+1<<3];
+ a-=w;
+ b+=w*nsrc[0];
+ w=hmod[(1<<3)+by];
+ a-=w;
+ b+=w*src[1];
+ dst[0]=OC_CLAMP255(a*src[0]+b>>7);
+ for(bx=1;bx<7;bx++){
+ a=128;
+ b=64;
+ w=hmod[(bx<<3)+by];
+ a-=w;
+ b+=w*src[bx-1];
+ w=vmod[(by<<3)+bx];
+ a-=w;
+ b+=w*psrc[bx];
+ w=vmod[(by+1<<3)+bx];
+ a-=w;
+ b+=w*nsrc[bx];
+ w=hmod[(bx+1<<3)+by];
+ a-=w;
+ b+=w*src[bx+1];
+ dst[bx]=OC_CLAMP255(a*src[bx]+b>>7);
+ }
+ a=128;
+ b=64;
+ w=hmod[(7<<3)+by];
+ a-=w;
+ b+=w*src[6];
+ w=vmod[(by<<3)+7];
+ a-=w;
+ b+=w*psrc[7];
+ w=vmod[(by+1<<3)+7];
+ a-=w;
+ b+=w*nsrc[7];
+ w=hmod[(8<<3)+by];
+ a-=w;
+ b+=w*src[7+!(_b&2)];
+ dst[7]=OC_CLAMP255(a*src[7]+b>>7);
+ dst+=_ystride;
+ psrc=src;
+ src=nsrc;
+ nsrc+=_ystride&-(!(_b&8)|by<6);
+ }
+}
+
+#define OC_DERING_THRESH1 (384)
+#define OC_DERING_THRESH2 (4*OC_DERING_THRESH1)
+#define OC_DERING_THRESH3 (5*OC_DERING_THRESH1)
+#define OC_DERING_THRESH4 (10*OC_DERING_THRESH1)
+
+static void oc_dec_dering_frag_rows(oc_dec_ctx *_dec,th_img_plane *_img,
+ int _pli,int _fragy0,int _fragy_end){
+ th_img_plane *iplane;
+ oc_fragment_plane *fplane;
+ oc_fragment *frag;
+ int *variance;
+ unsigned char *idata;
+ ptrdiff_t froffset;
+ int ystride;
+ int nhfrags;
+ int sthresh;
+ int strong;
+ int y_end;
+ int width;
+ int height;
+ int y;
+ int x;
+ iplane=_img+_pli;
+ fplane=_dec->state.fplanes+_pli;
+ nhfrags=fplane->nhfrags;
+ froffset=fplane->froffset+_fragy0*(ptrdiff_t)nhfrags;
+ variance=_dec->variances+froffset;
+ frag=_dec->state.frags+froffset;
+ strong=_dec->pp_level>=(_pli?OC_PP_LEVEL_SDERINGC:OC_PP_LEVEL_SDERINGY);
+ sthresh=_pli?OC_DERING_THRESH4:OC_DERING_THRESH3;
+ y=_fragy0<<3;
+ ystride=iplane->stride;
+ idata=iplane->data+y*(ptrdiff_t)ystride;
+ y_end=_fragy_end<<3;
+ width=iplane->width;
+ height=iplane->height;
+ for(;y<y_end;y+=8){
+ for(x=0;x<width;x+=8){
+ int b;
+ int qi;
+ int var;
+ qi=_dec->state.qis[frag->qii];
+ var=*variance;
+ b=(x<=0)|(x+8>=width)<<1|(y<=0)<<2|(y+8>=height)<<3;
+ if(strong&&var>sthresh){
+ oc_dering_block(idata+x,ystride,b,
+ _dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
+ if(_pli||!(b&1)&&*(variance-1)>OC_DERING_THRESH4||
+ !(b&2)&&variance[1]>OC_DERING_THRESH4||
+ !(b&4)&&*(variance-nhfrags)>OC_DERING_THRESH4||
+ !(b&8)&&variance[nhfrags]>OC_DERING_THRESH4){
+ oc_dering_block(idata+x,ystride,b,
+ _dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
+ oc_dering_block(idata+x,ystride,b,
+ _dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
+ }
+ }
+ else if(var>OC_DERING_THRESH2){
+ oc_dering_block(idata+x,ystride,b,
+ _dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],1);
+ }
+ else if(var>OC_DERING_THRESH1){
+ oc_dering_block(idata+x,ystride,b,
+ _dec->pp_dc_scale[qi],_dec->pp_sharp_mod[qi],0);
+ }
+ frag++;
+ variance++;
+ }
+ idata+=ystride<<3;
+ }
+}
+
+
+
+th_dec_ctx *th_decode_alloc(const th_info *_info,const th_setup_info *_setup){
+ oc_dec_ctx *dec;
+ if(_info==NULL||_setup==NULL)return NULL;
+ dec=oc_aligned_malloc(sizeof(*dec),16);
+ if(dec==NULL||oc_dec_init(dec,_info,_setup)<0){
+ oc_aligned_free(dec);
+ return NULL;
+ }
+ dec->state.curframe_num=0;
+ return dec;
+}
+
+void th_decode_free(th_dec_ctx *_dec){
+ if(_dec!=NULL){
+ oc_dec_clear(_dec);
+ oc_aligned_free(_dec);
+ }
+}
+
+int th_decode_ctl(th_dec_ctx *_dec,int _req,void *_buf,
+ size_t _buf_sz){
+ switch(_req){
+ case TH_DECCTL_GET_PPLEVEL_MAX:{
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(int))return TH_EINVAL;
+ (*(int *)_buf)=OC_PP_LEVEL_MAX;
+ return 0;
+ }break;
+ case TH_DECCTL_SET_PPLEVEL:{
+ int pp_level;
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(int))return TH_EINVAL;
+ pp_level=*(int *)_buf;
+ if(pp_level<0||pp_level>OC_PP_LEVEL_MAX)return TH_EINVAL;
+ _dec->pp_level=pp_level;
+ return 0;
+ }break;
+ case TH_DECCTL_SET_GRANPOS:{
+ ogg_int64_t granpos;
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(ogg_int64_t))return TH_EINVAL;
+ granpos=*(ogg_int64_t *)_buf;
+ if(granpos<0)return TH_EINVAL;
+ _dec->state.granpos=granpos;
+ _dec->state.keyframe_num=(granpos>>_dec->state.info.keyframe_granule_shift)
+ -_dec->state.granpos_bias;
+ _dec->state.curframe_num=_dec->state.keyframe_num
+ +(granpos&(1<<_dec->state.info.keyframe_granule_shift)-1);
+ return 0;
+ }break;
+ case TH_DECCTL_SET_STRIPE_CB:{
+ th_stripe_callback *cb;
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(th_stripe_callback))return TH_EINVAL;
+ cb=(th_stripe_callback *)_buf;
+ _dec->stripe_cb.ctx=cb->ctx;
+ _dec->stripe_cb.stripe_decoded=cb->stripe_decoded;
+ return 0;
+ }break;
+#ifdef HAVE_CAIRO
+ case TH_DECCTL_SET_TELEMETRY_MBMODE:{
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(int))return TH_EINVAL;
+ _dec->telemetry=1;
+ _dec->telemetry_mbmode=*(int *)_buf;
+ return 0;
+ }break;
+ case TH_DECCTL_SET_TELEMETRY_MV:{
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(int))return TH_EINVAL;
+ _dec->telemetry=1;
+ _dec->telemetry_mv=*(int *)_buf;
+ return 0;
+ }break;
+ case TH_DECCTL_SET_TELEMETRY_QI:{
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(int))return TH_EINVAL;
+ _dec->telemetry=1;
+ _dec->telemetry_qi=*(int *)_buf;
+ return 0;
+ }break;
+ case TH_DECCTL_SET_TELEMETRY_BITS:{
+ if(_dec==NULL||_buf==NULL)return TH_EFAULT;
+ if(_buf_sz!=sizeof(int))return TH_EINVAL;
+ _dec->telemetry=1;
+ _dec->telemetry_bits=*(int *)_buf;
+ return 0;
+ }break;
+#endif
+ default:return TH_EIMPL;
+ }
+}
+
+/*We're decoding an INTER frame, but have no initialized reference
+ buffers (i.e., decoding did not start on a key frame).
+ We initialize them to a solid gray here.*/
+static void oc_dec_init_dummy_frame(th_dec_ctx *_dec){
+ th_info *info;
+ size_t yplane_sz;
+ size_t cplane_sz;
+ ptrdiff_t yoffset;
+ int yhstride;
+ int yheight;
+ int chstride;
+ int cheight;
+ _dec->state.ref_frame_idx[OC_FRAME_GOLD]=0;
+ _dec->state.ref_frame_idx[OC_FRAME_PREV]=0;
+ _dec->state.ref_frame_idx[OC_FRAME_SELF]=0;
+ _dec->state.ref_frame_data[OC_FRAME_GOLD]=
+ _dec->state.ref_frame_data[OC_FRAME_PREV]=
+ _dec->state.ref_frame_data[OC_FRAME_SELF]=
+ _dec->state.ref_frame_bufs[0][0].data;
+ memcpy(_dec->pp_frame_buf,_dec->state.ref_frame_bufs[0],
+ sizeof(_dec->pp_frame_buf[0])*3);
+ info=&_dec->state.info;
+ yhstride=abs(_dec->state.ref_ystride[0]);
+ yheight=info->frame_height+2*OC_UMV_PADDING;
+ chstride=abs(_dec->state.ref_ystride[1]);
+ cheight=yheight>>!(info->pixel_fmt&2);
+ yplane_sz=yhstride*(size_t)yheight+16;
+ cplane_sz=chstride*(size_t)cheight;
+ yoffset=yhstride*(ptrdiff_t)(yheight-OC_UMV_PADDING-1)+OC_UMV_PADDING;
+ memset(_dec->state.ref_frame_data[0]-yoffset,0x80,yplane_sz+2*cplane_sz);
+}
+
+int th_decode_packetin(th_dec_ctx *_dec,const ogg_packet *_op,
+ ogg_int64_t *_granpos){
+ int ret;
+ if(_dec==NULL||_op==NULL)return TH_EFAULT;
+ /*A completely empty packet indicates a dropped frame and is treated exactly
+ like an inter frame with no coded blocks.*/
+ if(_op->bytes==0){
+ _dec->state.frame_type=OC_INTER_FRAME;
+ _dec->state.ntotal_coded_fragis=0;
+ }
+ else{
+ oc_pack_readinit(&_dec->opb,_op->packet,_op->bytes);
+ ret=oc_dec_frame_header_unpack(_dec);
+ if(ret<0)return ret;
+ if(_dec->state.frame_type==OC_INTRA_FRAME)oc_dec_mark_all_intra(_dec);
+ else oc_dec_coded_flags_unpack(_dec);
+ }
+ /*If there have been no reference frames, and we need one, initialize one.*/
+ if(_dec->state.frame_type!=OC_INTRA_FRAME&&
+ (_dec->state.ref_frame_idx[OC_FRAME_GOLD]<0||
+ _dec->state.ref_frame_idx[OC_FRAME_PREV]<0)){
+ oc_dec_init_dummy_frame(_dec);
+ }
+ /*If this was an inter frame with no coded blocks...*/
+ if(_dec->state.ntotal_coded_fragis<=0){
+ /*Just update the granule position and return.*/
+ _dec->state.granpos=(_dec->state.keyframe_num+_dec->state.granpos_bias<<
+ _dec->state.info.keyframe_granule_shift)
+ +(_dec->state.curframe_num-_dec->state.keyframe_num);
+ _dec->state.curframe_num++;
+ if(_granpos!=NULL)*_granpos=_dec->state.granpos;
+ return TH_DUPFRAME;
+ }
+ else{
+ th_ycbcr_buffer stripe_buf;
+ int stripe_fragy;
+ int refi;
+ int pli;
+ int notstart;
+ int notdone;
+ /*Select a free buffer to use for the reconstructed version of this frame.*/
+ for(refi=0;refi==_dec->state.ref_frame_idx[OC_FRAME_GOLD]||
+ refi==_dec->state.ref_frame_idx[OC_FRAME_PREV];refi++);
+ _dec->state.ref_frame_idx[OC_FRAME_SELF]=refi;
+ _dec->state.ref_frame_data[OC_FRAME_SELF]=
+ _dec->state.ref_frame_bufs[refi][0].data;
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_frame_bytes=_op->bytes;
+#endif
+ if(_dec->state.frame_type==OC_INTRA_FRAME){
+ _dec->state.keyframe_num=_dec->state.curframe_num;
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_coding_bytes=
+ _dec->telemetry_mode_bytes=
+ _dec->telemetry_mv_bytes=oc_pack_bytes_left(&_dec->opb);
+#endif
+ }
+ else{
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_coding_bytes=oc_pack_bytes_left(&_dec->opb);
+#endif
+ oc_dec_mb_modes_unpack(_dec);
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_mode_bytes=oc_pack_bytes_left(&_dec->opb);
+#endif
+ oc_dec_mv_unpack_and_frag_modes_fill(_dec);
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_mv_bytes=oc_pack_bytes_left(&_dec->opb);
+#endif
+ }
+ oc_dec_block_qis_unpack(_dec);
+#if defined(HAVE_CAIRO)
+ _dec->telemetry_qi_bytes=oc_pack_bytes_left(&_dec->opb);
+#endif
+ oc_dec_residual_tokens_unpack(_dec);
+ /*Update granule position.
+ This must be done before the striped decode callbacks so that the
+ application knows what to do with the frame data.*/
+ _dec->state.granpos=(_dec->state.keyframe_num+_dec->state.granpos_bias<<
+ _dec->state.info.keyframe_granule_shift)
+ +(_dec->state.curframe_num-_dec->state.keyframe_num);
+ _dec->state.curframe_num++;
+ if(_granpos!=NULL)*_granpos=_dec->state.granpos;
+ /*All of the rest of the operations -- DC prediction reversal,
+ reconstructing coded fragments, copying uncoded fragments, loop
+ filtering, extending borders, and out-of-loop post-processing -- should
+ be pipelined.
+ I.e., DC prediction reversal, reconstruction, and uncoded fragment
+ copying are done for one or two super block rows, then loop filtering is
+ run as far as it can, then bordering copying, then post-processing.
+ For 4:2:0 video a Minimum Codable Unit or MCU contains two luma super
+ block rows, and one chroma.
+ Otherwise, an MCU consists of one super block row from each plane.
+ Inside each MCU, we perform all of the steps on one color plane before
+ moving on to the next.
+ After reconstruction, the additional filtering stages introduce a delay
+ since they need some pixels from the next fragment row.
+ Thus the actual number of decoded rows available is slightly smaller for
+ the first MCU, and slightly larger for the last.
+
+ This entire process allows us to operate on the data while it is still in
+ cache, resulting in big performance improvements.
+ An application callback allows further application processing (blitting
+ to video memory, color conversion, etc.) to also use the data while it's
+ in cache.*/
+ oc_dec_pipeline_init(_dec,&_dec->pipe);
+ oc_ycbcr_buffer_flip(stripe_buf,_dec->pp_frame_buf);
+ notstart=0;
+ notdone=1;
+ for(stripe_fragy=0;notdone;stripe_fragy+=_dec->pipe.mcu_nvfrags){
+ int avail_fragy0;
+ int avail_fragy_end;
+ avail_fragy0=avail_fragy_end=_dec->state.fplanes[0].nvfrags;
+ notdone=stripe_fragy+_dec->pipe.mcu_nvfrags<avail_fragy_end;
+ for(pli=0;pli<3;pli++){
+ oc_fragment_plane *fplane;
+ int frag_shift;
+ int pp_offset;
+ int sdelay;
+ int edelay;
+ fplane=_dec->state.fplanes+pli;
+ /*Compute the first and last fragment row of the current MCU for this
+ plane.*/
+ frag_shift=pli!=0&&!(_dec->state.info.pixel_fmt&2);
+ _dec->pipe.fragy0[pli]=stripe_fragy>>frag_shift;
+ _dec->pipe.fragy_end[pli]=OC_MINI(fplane->nvfrags,
+ _dec->pipe.fragy0[pli]+(_dec->pipe.mcu_nvfrags>>frag_shift));
+ oc_dec_dc_unpredict_mcu_plane(_dec,&_dec->pipe,pli);
+ oc_dec_frags_recon_mcu_plane(_dec,&_dec->pipe,pli);
+ sdelay=edelay=0;
+ if(_dec->pipe.loop_filter){
+ sdelay+=notstart;
+ edelay+=notdone;
+ oc_state_loop_filter_frag_rows(&_dec->state,
+ _dec->pipe.bounding_values,OC_FRAME_SELF,pli,
+ _dec->pipe.fragy0[pli]-sdelay,_dec->pipe.fragy_end[pli]-edelay);
+ }
+ /*To fill the borders, we have an additional two pixel delay, since a
+ fragment in the next row could filter its top edge, using two pixels
+ from a fragment in this row.
+ But there's no reason to delay a full fragment between the two.*/
+ oc_state_borders_fill_rows(&_dec->state,refi,pli,
+ (_dec->pipe.fragy0[pli]-sdelay<<3)-(sdelay<<1),
+ (_dec->pipe.fragy_end[pli]-edelay<<3)-(edelay<<1));
+ /*Out-of-loop post-processing.*/
+ pp_offset=3*(pli!=0);
+ if(_dec->pipe.pp_level>=OC_PP_LEVEL_DEBLOCKY+pp_offset){
+ /*Perform de-blocking in one plane.*/
+ sdelay+=notstart;
+ edelay+=notdone;
+ oc_dec_deblock_frag_rows(_dec,_dec->pp_frame_buf,
+ _dec->state.ref_frame_bufs[refi],pli,
+ _dec->pipe.fragy0[pli]-sdelay,_dec->pipe.fragy_end[pli]-edelay);
+ if(_dec->pipe.pp_level>=OC_PP_LEVEL_DERINGY+pp_offset){
+ /*Perform de-ringing in one plane.*/
+ sdelay+=notstart;
+ edelay+=notdone;
+ oc_dec_dering_frag_rows(_dec,_dec->pp_frame_buf,pli,
+ _dec->pipe.fragy0[pli]-sdelay,_dec->pipe.fragy_end[pli]-edelay);
+ }
+ }
+ /*If no post-processing is done, we still need to delay a row for the
+ loop filter, thanks to the strange filtering order VP3 chose.*/
+ else if(_dec->pipe.loop_filter){
+ sdelay+=notstart;
+ edelay+=notdone;
+ }
+ /*Compute the intersection of the available rows in all planes.
+ If chroma is sub-sampled, the effect of each of its delays is
+ doubled, but luma might have more post-processing filters enabled
+ than chroma, so we don't know up front which one is the limiting
+ factor.*/
+ avail_fragy0=OC_MINI(avail_fragy0,
+ _dec->pipe.fragy0[pli]-sdelay<<frag_shift);
+ avail_fragy_end=OC_MINI(avail_fragy_end,
+ _dec->pipe.fragy_end[pli]-edelay<<frag_shift);
+ }
+ if(_dec->stripe_cb.stripe_decoded!=NULL){
+ /*The callback might want to use the FPU, so let's make sure they can.
+ We violate all kinds of ABI restrictions by not doing this until
+ now, but none of them actually matter since we don't use floating
+ point ourselves.*/
+ oc_restore_fpu(&_dec->state);
+ /*Make the callback, ensuring we flip the sense of the "start" and
+ "end" of the available region upside down.*/
+ (*_dec->stripe_cb.stripe_decoded)(_dec->stripe_cb.ctx,stripe_buf,
+ _dec->state.fplanes[0].nvfrags-avail_fragy_end,
+ _dec->state.fplanes[0].nvfrags-avail_fragy0);
+ }
+ notstart=1;
+ }
+ /*Finish filling in the reference frame borders.*/
+ for(pli=0;pli<3;pli++)oc_state_borders_fill_caps(&_dec->state,refi,pli);
+ /*Update the reference frame indices.*/
+ if(_dec->state.frame_type==OC_INTRA_FRAME){
+ /*The new frame becomes both the previous and gold reference frames.*/
+ _dec->state.ref_frame_idx[OC_FRAME_GOLD]=
+ _dec->state.ref_frame_idx[OC_FRAME_PREV]=
+ _dec->state.ref_frame_idx[OC_FRAME_SELF];
+ _dec->state.ref_frame_data[OC_FRAME_GOLD]=
+ _dec->state.ref_frame_data[OC_FRAME_PREV]=
+ _dec->state.ref_frame_data[OC_FRAME_SELF];
+ }
+ else{
+ /*Otherwise, just replace the previous reference frame.*/
+ _dec->state.ref_frame_idx[OC_FRAME_PREV]=
+ _dec->state.ref_frame_idx[OC_FRAME_SELF];
+ _dec->state.ref_frame_data[OC_FRAME_PREV]=
+ _dec->state.ref_frame_data[OC_FRAME_SELF];
+ }
+ /*Restore the FPU before dump_frame, since that _does_ use the FPU (for PNG
+ gamma values, if nothing else).*/
+ oc_restore_fpu(&_dec->state);
+#if defined(OC_DUMP_IMAGES)
+ /*We only dump images if there were some coded blocks.*/
+ oc_state_dump_frame(&_dec->state,OC_FRAME_SELF,"dec");
+#endif
+ return 0;
+ }
+}
+
+int th_decode_ycbcr_out(th_dec_ctx *_dec,th_ycbcr_buffer _ycbcr){
+ if(_dec==NULL||_ycbcr==NULL)return TH_EFAULT;
+ oc_ycbcr_buffer_flip(_ycbcr,_dec->pp_frame_buf);
+#if defined(HAVE_CAIRO)
+ /*If telemetry ioctls are active, we need to draw to the output buffer.
+ Stuff the plane into cairo.*/
+ if(_dec->telemetry){
+ cairo_surface_t *cs;
+ unsigned char *data;
+ unsigned char *y_row;
+ unsigned char *u_row;
+ unsigned char *v_row;
+ unsigned char *rgb_row;
+ int cstride;
+ int w;
+ int h;
+ int x;
+ int y;
+ int hdec;
+ int vdec;
+ w=_ycbcr[0].width;
+ h=_ycbcr[0].height;
+ hdec=!(_dec->state.info.pixel_fmt&1);
+ vdec=!(_dec->state.info.pixel_fmt&2);
+ /*Lazy data buffer init.
+ We could try to re-use the post-processing buffer, which would save
+ memory, but complicate the allocation logic there.
+ I don't think anyone cares about memory usage when using telemetry; it is
+ not meant for embedded devices.*/
+ if(_dec->telemetry_frame_data==NULL){
+ _dec->telemetry_frame_data=_ogg_malloc(
+ (w*h+2*(w>>hdec)*(h>>vdec))*sizeof(*_dec->telemetry_frame_data));
+ if(_dec->telemetry_frame_data==NULL)return 0;
+ }
+ cs=cairo_image_surface_create(CAIRO_FORMAT_RGB24,w,h);
+ /*Sadly, no YUV support in Cairo (yet); convert into the RGB buffer.*/
+ data=cairo_image_surface_get_data(cs);
+ if(data==NULL){
+ cairo_surface_destroy(cs);
+ return 0;
+ }
+ cstride=cairo_image_surface_get_stride(cs);
+ y_row=_ycbcr[0].data;
+ u_row=_ycbcr[1].data;
+ v_row=_ycbcr[2].data;
+ rgb_row=data;
+ for(y=0;y<h;y++){
+ for(x=0;x<w;x++){
+ int r;
+ int g;
+ int b;
+ r=(1904000*y_row[x]+2609823*v_row[x>>hdec]-363703744)/1635200;
+ g=(3827562*y_row[x]-1287801*u_row[x>>hdec]
+ -2672387*v_row[x>>hdec]+447306710)/3287200;
+ b=(952000*y_row[x]+1649289*u_row[x>>hdec]-225932192)/817600;
+ rgb_row[4*x+0]=OC_CLAMP255(b);
+ rgb_row[4*x+1]=OC_CLAMP255(g);
+ rgb_row[4*x+2]=OC_CLAMP255(r);
+ }
+ y_row+=_ycbcr[0].stride;
+ u_row+=_ycbcr[1].stride&-((y&1)|!vdec);
+ v_row+=_ycbcr[2].stride&-((y&1)|!vdec);
+ rgb_row+=cstride;
+ }
+ /*Draw coded identifier for each macroblock (stored in Hilbert order).*/
+ {
+ cairo_t *c;
+ const oc_fragment *frags;
+ oc_mv *frag_mvs;
+ const signed char *mb_modes;
+ oc_mb_map *mb_maps;
+ size_t nmbs;
+ size_t mbi;
+ int row2;
+ int col2;
+ int qim[3]={0,0,0};
+ if(_dec->state.nqis==2){
+ int bqi;
+ bqi=_dec->state.qis[0];
+ if(_dec->state.qis[1]>bqi)qim[1]=1;
+ if(_dec->state.qis[1]<bqi)qim[1]=-1;
+ }
+ if(_dec->state.nqis==3){
+ int bqi;
+ int cqi;
+ int dqi;
+ bqi=_dec->state.qis[0];
+ cqi=_dec->state.qis[1];
+ dqi=_dec->state.qis[2];
+ if(cqi>bqi&&dqi>bqi){
+ if(dqi>cqi){
+ qim[1]=1;
+ qim[2]=2;
+ }
+ else{
+ qim[1]=2;
+ qim[2]=1;
+ }
+ }
+ else if(cqi<bqi&&dqi<bqi){
+ if(dqi<cqi){
+ qim[1]=-1;
+ qim[2]=-2;
+ }
+ else{
+ qim[1]=-2;
+ qim[2]=-1;
+ }
+ }
+ else{
+ if(cqi<bqi)qim[1]=-1;
+ else qim[1]=1;
+ if(dqi<bqi)qim[2]=-1;
+ else qim[2]=1;
+ }
+ }
+ c=cairo_create(cs);
+ frags=_dec->state.frags;
+ frag_mvs=_dec->state.frag_mvs;
+ mb_modes=_dec->state.mb_modes;
+ mb_maps=_dec->state.mb_maps;
+ nmbs=_dec->state.nmbs;
+ row2=0;
+ col2=0;
+ for(mbi=0;mbi<nmbs;mbi++){
+ float x;
+ float y;
+ int bi;
+ y=h-(row2+((col2+1>>1)&1))*16-16;
+ x=(col2>>1)*16;
+ cairo_set_line_width(c,1.);
+ /*Keyframe (all intra) red box.*/
+ if(_dec->state.frame_type==OC_INTRA_FRAME){
+ if(_dec->telemetry_mbmode&0x02){
+ cairo_set_source_rgba(c,1.,0,0,.5);
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,1.,0,0,.25);
+ cairo_fill(c);
+ }
+ }
+ else{
+ ptrdiff_t fragi;
+ int frag_mvx;
+ int frag_mvy;
+ for(bi=0;bi<4;bi++){
+ fragi=mb_maps[mbi][0][bi];
+ if(fragi>=0&&frags[fragi].coded){
+ frag_mvx=OC_MV_X(frag_mvs[fragi]);
+ frag_mvy=OC_MV_Y(frag_mvs[fragi]);
+ break;
+ }
+ }
+ if(bi<4){
+ switch(mb_modes[mbi]){
+ case OC_MODE_INTRA:{
+ if(_dec->telemetry_mbmode&0x02){
+ cairo_set_source_rgba(c,1.,0,0,.5);
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,1.,0,0,.25);
+ cairo_fill(c);
+ }
+ }break;
+ case OC_MODE_INTER_NOMV:{
+ if(_dec->telemetry_mbmode&0x01){
+ cairo_set_source_rgba(c,0,0,1.,.5);
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,0,0,1.,.25);
+ cairo_fill(c);
+ }
+ }break;
+ case OC_MODE_INTER_MV:{
+ if(_dec->telemetry_mbmode&0x04){
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_set_source_rgba(c,0,1.,0,.5);
+ cairo_stroke(c);
+ }
+ if(_dec->telemetry_mv&0x04){
+ cairo_move_to(c,x+8+frag_mvx,y+8-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+8+frag_mvx*.66,y+8-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+8+frag_mvx*.33,y+8-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+8,y+8);
+ cairo_stroke(c);
+ }
+ }break;
+ case OC_MODE_INTER_MV_LAST:{
+ if(_dec->telemetry_mbmode&0x08){
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_set_source_rgba(c,0,1.,0,.5);
+ cairo_move_to(c,x+13.5,y+2.5);
+ cairo_line_to(c,x+2.5,y+8);
+ cairo_line_to(c,x+13.5,y+13.5);
+ cairo_stroke(c);
+ }
+ if(_dec->telemetry_mv&0x08){
+ cairo_move_to(c,x+8+frag_mvx,y+8-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+8+frag_mvx*.66,y+8-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+8+frag_mvx*.33,y+8-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+8,y+8);
+ cairo_stroke(c);
+ }
+ }break;
+ case OC_MODE_INTER_MV_LAST2:{
+ if(_dec->telemetry_mbmode&0x10){
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_set_source_rgba(c,0,1.,0,.5);
+ cairo_move_to(c,x+8,y+2.5);
+ cairo_line_to(c,x+2.5,y+8);
+ cairo_line_to(c,x+8,y+13.5);
+ cairo_move_to(c,x+13.5,y+2.5);
+ cairo_line_to(c,x+8,y+8);
+ cairo_line_to(c,x+13.5,y+13.5);
+ cairo_stroke(c);
+ }
+ if(_dec->telemetry_mv&0x10){
+ cairo_move_to(c,x+8+frag_mvx,y+8-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+8+frag_mvx*.66,y+8-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+8+frag_mvx*.33,y+8-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+8,y+8);
+ cairo_stroke(c);
+ }
+ }break;
+ case OC_MODE_GOLDEN_NOMV:{
+ if(_dec->telemetry_mbmode&0x20){
+ cairo_set_source_rgba(c,1.,1.,0,.5);
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,1.,1.,0,.25);
+ cairo_fill(c);
+ }
+ }break;
+ case OC_MODE_GOLDEN_MV:{
+ if(_dec->telemetry_mbmode&0x40){
+ cairo_rectangle(c,x+2.5,y+2.5,11,11);
+ cairo_set_source_rgba(c,1.,1.,0,.5);
+ cairo_stroke(c);
+ }
+ if(_dec->telemetry_mv&0x40){
+ cairo_move_to(c,x+8+frag_mvx,y+8-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+8+frag_mvx*.66,y+8-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+8+frag_mvx*.33,y+8-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+8,y+8);
+ cairo_stroke(c);
+ }
+ }break;
+ case OC_MODE_INTER_MV_FOUR:{
+ if(_dec->telemetry_mbmode&0x80){
+ cairo_rectangle(c,x+2.5,y+2.5,4,4);
+ cairo_rectangle(c,x+9.5,y+2.5,4,4);
+ cairo_rectangle(c,x+2.5,y+9.5,4,4);
+ cairo_rectangle(c,x+9.5,y+9.5,4,4);
+ cairo_set_source_rgba(c,0,1.,0,.5);
+ cairo_stroke(c);
+ }
+ /*4mv is odd, coded in raster order.*/
+ fragi=mb_maps[mbi][0][0];
+ if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
+ frag_mvx=OC_MV_X(frag_mvs[fragi]);
+ frag_mvx=OC_MV_Y(frag_mvs[fragi]);
+ cairo_move_to(c,x+4+frag_mvx,y+12-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+4+frag_mvx*.66,y+12-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+4+frag_mvx*.33,y+12-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+4,y+12);
+ cairo_stroke(c);
+ }
+ fragi=mb_maps[mbi][0][1];
+ if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
+ frag_mvx=OC_MV_X(frag_mvs[fragi]);
+ frag_mvx=OC_MV_Y(frag_mvs[fragi]);
+ cairo_move_to(c,x+12+frag_mvx,y+12-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+12+frag_mvx*.66,y+12-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+12+frag_mvx*.33,y+12-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+12,y+12);
+ cairo_stroke(c);
+ }
+ fragi=mb_maps[mbi][0][2];
+ if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
+ frag_mvx=OC_MV_X(frag_mvs[fragi]);
+ frag_mvx=OC_MV_Y(frag_mvs[fragi]);
+ cairo_move_to(c,x+4+frag_mvx,y+4-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+4+frag_mvx*.66,y+4-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+4+frag_mvx*.33,y+4-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+4,y+4);
+ cairo_stroke(c);
+ }
+ fragi=mb_maps[mbi][0][3];
+ if(frags[fragi].coded&&_dec->telemetry_mv&0x80){
+ frag_mvx=OC_MV_X(frag_mvs[fragi]);
+ frag_mvx=OC_MV_Y(frag_mvs[fragi]);
+ cairo_move_to(c,x+12+frag_mvx,y+4-frag_mvy);
+ cairo_set_source_rgba(c,1.,1.,1.,.9);
+ cairo_set_line_width(c,3.);
+ cairo_line_to(c,x+12+frag_mvx*.66,y+4-frag_mvy*.66);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,2.);
+ cairo_line_to(c,x+12+frag_mvx*.33,y+4-frag_mvy*.33);
+ cairo_stroke_preserve(c);
+ cairo_set_line_width(c,1.);
+ cairo_line_to(c,x+12,y+4);
+ cairo_stroke(c);
+ }
+ }break;
+ }
+ }
+ }
+ /*qii illustration.*/
+ if(_dec->telemetry_qi&0x2){
+ cairo_set_line_cap(c,CAIRO_LINE_CAP_SQUARE);
+ for(bi=0;bi<4;bi++){
+ ptrdiff_t fragi;
+ int qiv;
+ int xp;
+ int yp;
+ xp=x+(bi&1)*8;
+ yp=y+8-(bi&2)*4;
+ fragi=mb_maps[mbi][0][bi];
+ if(fragi>=0&&frags[fragi].coded){
+ qiv=qim[frags[fragi].qii];
+ cairo_set_line_width(c,3.);
+ cairo_set_source_rgba(c,0.,0.,0.,.5);
+ switch(qiv){
+ /*Double plus:*/
+ case 2:{
+ if((bi&1)^((bi&2)>>1)){
+ cairo_move_to(c,xp+2.5,yp+1.5);
+ cairo_line_to(c,xp+2.5,yp+3.5);
+ cairo_move_to(c,xp+1.5,yp+2.5);
+ cairo_line_to(c,xp+3.5,yp+2.5);
+ cairo_move_to(c,xp+5.5,yp+4.5);
+ cairo_line_to(c,xp+5.5,yp+6.5);
+ cairo_move_to(c,xp+4.5,yp+5.5);
+ cairo_line_to(c,xp+6.5,yp+5.5);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,0.,1.,1.,1.);
+ }
+ else{
+ cairo_move_to(c,xp+5.5,yp+1.5);
+ cairo_line_to(c,xp+5.5,yp+3.5);
+ cairo_move_to(c,xp+4.5,yp+2.5);
+ cairo_line_to(c,xp+6.5,yp+2.5);
+ cairo_move_to(c,xp+2.5,yp+4.5);
+ cairo_line_to(c,xp+2.5,yp+6.5);
+ cairo_move_to(c,xp+1.5,yp+5.5);
+ cairo_line_to(c,xp+3.5,yp+5.5);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,0.,1.,1.,1.);
+ }
+ }break;
+ /*Double minus:*/
+ case -2:{
+ cairo_move_to(c,xp+2.5,yp+2.5);
+ cairo_line_to(c,xp+5.5,yp+2.5);
+ cairo_move_to(c,xp+2.5,yp+5.5);
+ cairo_line_to(c,xp+5.5,yp+5.5);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,1.,1.,1.,1.);
+ }break;
+ /*Plus:*/
+ case 1:{
+ if(bi&2==0)yp-=2;
+ if(bi&1==0)xp-=2;
+ cairo_move_to(c,xp+4.5,yp+2.5);
+ cairo_line_to(c,xp+4.5,yp+6.5);
+ cairo_move_to(c,xp+2.5,yp+4.5);
+ cairo_line_to(c,xp+6.5,yp+4.5);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,.1,1.,.3,1.);
+ break;
+ }
+ /*Fall through.*/
+ /*Minus:*/
+ case -1:{
+ cairo_move_to(c,xp+2.5,yp+4.5);
+ cairo_line_to(c,xp+6.5,yp+4.5);
+ cairo_stroke_preserve(c);
+ cairo_set_source_rgba(c,1.,.3,.1,1.);
+ }break;
+ default:continue;
+ }
+ cairo_set_line_width(c,1.);
+ cairo_stroke(c);
+ }
+ }
+ }
+ col2++;
+ if((col2>>1)>=_dec->state.nhmbs){
+ col2=0;
+ row2+=2;
+ }
+ }
+ /*Bit usage indicator[s]:*/
+ if(_dec->telemetry_bits){
+ int widths[6];
+ int fpsn;
+ int fpsd;
+ int mult;
+ int fullw;
+ int padw;
+ int i;
+ fpsn=_dec->state.info.fps_numerator;
+ fpsd=_dec->state.info.fps_denominator;
+ mult=(_dec->telemetry_bits>=0xFF?1:_dec->telemetry_bits);
+ fullw=250.f*h*fpsd*mult/fpsn;
+ padw=w-24;
+ /*Header and coded block bits.*/
+ if(_dec->telemetry_frame_bytes<0||
+ _dec->telemetry_frame_bytes==OC_LOTS_OF_BITS){
+ _dec->telemetry_frame_bytes=0;
+ }
+ if(_dec->telemetry_coding_bytes<0||
+ _dec->telemetry_coding_bytes>_dec->telemetry_frame_bytes){
+ _dec->telemetry_coding_bytes=0;
+ }
+ if(_dec->telemetry_mode_bytes<0||
+ _dec->telemetry_mode_bytes>_dec->telemetry_frame_bytes){
+ _dec->telemetry_mode_bytes=0;
+ }
+ if(_dec->telemetry_mv_bytes<0||
+ _dec->telemetry_mv_bytes>_dec->telemetry_frame_bytes){
+ _dec->telemetry_mv_bytes=0;
+ }
+ if(_dec->telemetry_qi_bytes<0||
+ _dec->telemetry_qi_bytes>_dec->telemetry_frame_bytes){
+ _dec->telemetry_qi_bytes=0;
+ }
+ if(_dec->telemetry_dc_bytes<0||
+ _dec->telemetry_dc_bytes>_dec->telemetry_frame_bytes){
+ _dec->telemetry_dc_bytes=0;
+ }
+ widths[0]=padw*(_dec->telemetry_frame_bytes-_dec->telemetry_coding_bytes)/fullw;
+ widths[1]=padw*(_dec->telemetry_coding_bytes-_dec->telemetry_mode_bytes)/fullw;
+ widths[2]=padw*(_dec->telemetry_mode_bytes-_dec->telemetry_mv_bytes)/fullw;
+ widths[3]=padw*(_dec->telemetry_mv_bytes-_dec->telemetry_qi_bytes)/fullw;
+ widths[4]=padw*(_dec->telemetry_qi_bytes-_dec->telemetry_dc_bytes)/fullw;
+ widths[5]=padw*(_dec->telemetry_dc_bytes)/fullw;
+ for(i=0;i<6;i++)if(widths[i]>w)widths[i]=w;
+ cairo_set_source_rgba(c,.0,.0,.0,.6);
+ cairo_rectangle(c,10,h-33,widths[0]+1,5);
+ cairo_rectangle(c,10,h-29,widths[1]+1,5);
+ cairo_rectangle(c,10,h-25,widths[2]+1,5);
+ cairo_rectangle(c,10,h-21,widths[3]+1,5);
+ cairo_rectangle(c,10,h-17,widths[4]+1,5);
+ cairo_rectangle(c,10,h-13,widths[5]+1,5);
+ cairo_fill(c);
+ cairo_set_source_rgb(c,1,0,0);
+ cairo_rectangle(c,10.5,h-32.5,widths[0],4);
+ cairo_fill(c);
+ cairo_set_source_rgb(c,0,1,0);
+ cairo_rectangle(c,10.5,h-28.5,widths[1],4);
+ cairo_fill(c);
+ cairo_set_source_rgb(c,0,0,1);
+ cairo_rectangle(c,10.5,h-24.5,widths[2],4);
+ cairo_fill(c);
+ cairo_set_source_rgb(c,.6,.4,.0);
+ cairo_rectangle(c,10.5,h-20.5,widths[3],4);
+ cairo_fill(c);
+ cairo_set_source_rgb(c,.3,.3,.3);
+ cairo_rectangle(c,10.5,h-16.5,widths[4],4);
+ cairo_fill(c);
+ cairo_set_source_rgb(c,.5,.5,.8);
+ cairo_rectangle(c,10.5,h-12.5,widths[5],4);
+ cairo_fill(c);
+ }
+ /*Master qi indicator[s]:*/
+ if(_dec->telemetry_qi&0x1){
+ cairo_text_extents_t extents;
+ char buffer[10];
+ int p;
+ int y;
+ p=0;
+ y=h-7.5;
+ if(_dec->state.qis[0]>=10)buffer[p++]=48+_dec->state.qis[0]/10;
+ buffer[p++]=48+_dec->state.qis[0]%10;
+ if(_dec->state.nqis>=2){
+ buffer[p++]=' ';
+ if(_dec->state.qis[1]>=10)buffer[p++]=48+_dec->state.qis[1]/10;
+ buffer[p++]=48+_dec->state.qis[1]%10;
+ }
+ if(_dec->state.nqis==3){
+ buffer[p++]=' ';
+ if(_dec->state.qis[2]>=10)buffer[p++]=48+_dec->state.qis[2]/10;
+ buffer[p++]=48+_dec->state.qis[2]%10;
+ }
+ buffer[p++]='\0';
+ cairo_select_font_face(c,"sans",
+ CAIRO_FONT_SLANT_NORMAL,CAIRO_FONT_WEIGHT_BOLD);
+ cairo_set_font_size(c,18);
+ cairo_text_extents(c,buffer,&extents);
+ cairo_set_source_rgb(c,1,1,1);
+ cairo_move_to(c,w-extents.x_advance-10,y);
+ cairo_show_text(c,buffer);
+ cairo_set_source_rgb(c,0,0,0);
+ cairo_move_to(c,w-extents.x_advance-10,y);
+ cairo_text_path(c,buffer);
+ cairo_set_line_width(c,.8);
+ cairo_set_line_join(c,CAIRO_LINE_JOIN_ROUND);
+ cairo_stroke(c);
+ }
+ cairo_destroy(c);
+ }
+ /*Out of the Cairo plane into the telemetry YUV buffer.*/
+ _ycbcr[0].data=_dec->telemetry_frame_data;
+ _ycbcr[0].stride=_ycbcr[0].width;
+ _ycbcr[1].data=_ycbcr[0].data+h*_ycbcr[0].stride;
+ _ycbcr[1].stride=_ycbcr[1].width;
+ _ycbcr[2].data=_ycbcr[1].data+(h>>vdec)*_ycbcr[1].stride;
+ _ycbcr[2].stride=_ycbcr[2].width;
+ y_row=_ycbcr[0].data;
+ u_row=_ycbcr[1].data;
+ v_row=_ycbcr[2].data;
+ rgb_row=data;
+ /*This is one of the few places it's worth handling chroma on a
+ case-by-case basis.*/
+ switch(_dec->state.info.pixel_fmt){
+ case TH_PF_420:{
+ for(y=0;y<h;y+=2){
+ unsigned char *y_row2;
+ unsigned char *rgb_row2;
+ y_row2=y_row+_ycbcr[0].stride;
+ rgb_row2=rgb_row+cstride;
+ for(x=0;x<w;x+=2){
+ int y;
+ int u;
+ int v;
+ y=(65481*rgb_row[4*x+2]+128553*rgb_row[4*x+1]
+ +24966*rgb_row[4*x+0]+4207500)/255000;
+ y_row[x]=OC_CLAMP255(y);
+ y=(65481*rgb_row[4*x+6]+128553*rgb_row[4*x+5]
+ +24966*rgb_row[4*x+4]+4207500)/255000;
+ y_row[x+1]=OC_CLAMP255(y);
+ y=(65481*rgb_row2[4*x+2]+128553*rgb_row2[4*x+1]
+ +24966*rgb_row2[4*x+0]+4207500)/255000;
+ y_row2[x]=OC_CLAMP255(y);
+ y=(65481*rgb_row2[4*x+6]+128553*rgb_row2[4*x+5]
+ +24966*rgb_row2[4*x+4]+4207500)/255000;
+ y_row2[x+1]=OC_CLAMP255(y);
+ u=(-8372*(rgb_row[4*x+2]+rgb_row[4*x+6]
+ +rgb_row2[4*x+2]+rgb_row2[4*x+6])
+ -16436*(rgb_row[4*x+1]+rgb_row[4*x+5]
+ +rgb_row2[4*x+1]+rgb_row2[4*x+5])
+ +24808*(rgb_row[4*x+0]+rgb_row[4*x+4]
+ +rgb_row2[4*x+0]+rgb_row2[4*x+4])+29032005)/225930;
+ v=(39256*(rgb_row[4*x+2]+rgb_row[4*x+6]
+ +rgb_row2[4*x+2]+rgb_row2[4*x+6])
+ -32872*(rgb_row[4*x+1]+rgb_row[4*x+5]
+ +rgb_row2[4*x+1]+rgb_row2[4*x+5])
+ -6384*(rgb_row[4*x+0]+rgb_row[4*x+4]
+ +rgb_row2[4*x+0]+rgb_row2[4*x+4])+45940035)/357510;
+ u_row[x>>1]=OC_CLAMP255(u);
+ v_row[x>>1]=OC_CLAMP255(v);
+ }
+ y_row+=_ycbcr[0].stride<<1;
+ u_row+=_ycbcr[1].stride;
+ v_row+=_ycbcr[2].stride;
+ rgb_row+=cstride<<1;
+ }
+ }break;
+ case TH_PF_422:{
+ for(y=0;y<h;y++){
+ for(x=0;x<w;x+=2){
+ int y;
+ int u;
+ int v;
+ y=(65481*rgb_row[4*x+2]+128553*rgb_row[4*x+1]
+ +24966*rgb_row[4*x+0]+4207500)/255000;
+ y_row[x]=OC_CLAMP255(y);
+ y=(65481*rgb_row[4*x+6]+128553*rgb_row[4*x+5]
+ +24966*rgb_row[4*x+4]+4207500)/255000;
+ y_row[x+1]=OC_CLAMP255(y);
+ u=(-16744*(rgb_row[4*x+2]+rgb_row[4*x+6])
+ -32872*(rgb_row[4*x+1]+rgb_row[4*x+5])
+ +49616*(rgb_row[4*x+0]+rgb_row[4*x+4])+29032005)/225930;
+ v=(78512*(rgb_row[4*x+2]+rgb_row[4*x+6])
+ -65744*(rgb_row[4*x+1]+rgb_row[4*x+5])
+ -12768*(rgb_row[4*x+0]+rgb_row[4*x+4])+45940035)/357510;
+ u_row[x>>1]=OC_CLAMP255(u);
+ v_row[x>>1]=OC_CLAMP255(v);
+ }
+ y_row+=_ycbcr[0].stride;
+ u_row+=_ycbcr[1].stride;
+ v_row+=_ycbcr[2].stride;
+ rgb_row+=cstride;
+ }
+ }break;
+ /*case TH_PF_444:*/
+ default:{
+ for(y=0;y<h;y++){
+ for(x=0;x<w;x++){
+ int y;
+ int u;
+ int v;
+ y=(65481*rgb_row[4*x+2]+128553*rgb_row[4*x+1]
+ +24966*rgb_row[4*x+0]+4207500)/255000;
+ u=(-33488*rgb_row[4*x+2]-65744*rgb_row[4*x+1]
+ +99232*rgb_row[4*x+0]+29032005)/225930;
+ v=(157024*rgb_row[4*x+2]-131488*rgb_row[4*x+1]
+ -25536*rgb_row[4*x+0]+45940035)/357510;
+ y_row[x]=OC_CLAMP255(y);
+ u_row[x]=OC_CLAMP255(u);
+ v_row[x]=OC_CLAMP255(v);
+ }
+ y_row+=_ycbcr[0].stride;
+ u_row+=_ycbcr[1].stride;
+ v_row+=_ycbcr[2].stride;
+ rgb_row+=cstride;
+ }
+ }break;
+ }
+ /*Finished.
+ Destroy the surface.*/
+ cairo_surface_destroy(cs);
+ }
+#endif
+ return 0;
+}
diff --git a/media/libtheora/lib/dequant.c b/media/libtheora/lib/dequant.c
new file mode 100644
index 000000000..e554872d4
--- /dev/null
+++ b/media/libtheora/lib/dequant.c
@@ -0,0 +1,182 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: dequant.c 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <ogg/ogg.h>
+#include "dequant.h"
+#include "decint.h"
+
+int oc_quant_params_unpack(oc_pack_buf *_opb,th_quant_info *_qinfo){
+ th_quant_base *base_mats;
+ long val;
+ int nbase_mats;
+ int sizes[64];
+ int indices[64];
+ int nbits;
+ int bmi;
+ int ci;
+ int qti;
+ int pli;
+ int qri;
+ int qi;
+ int i;
+ val=oc_pack_read(_opb,3);
+ nbits=(int)val;
+ for(qi=0;qi<64;qi++){
+ val=oc_pack_read(_opb,nbits);
+ _qinfo->loop_filter_limits[qi]=(unsigned char)val;
+ }
+ val=oc_pack_read(_opb,4);
+ nbits=(int)val+1;
+ for(qi=0;qi<64;qi++){
+ val=oc_pack_read(_opb,nbits);
+ _qinfo->ac_scale[qi]=(ogg_uint16_t)val;
+ }
+ val=oc_pack_read(_opb,4);
+ nbits=(int)val+1;
+ for(qi=0;qi<64;qi++){
+ val=oc_pack_read(_opb,nbits);
+ _qinfo->dc_scale[qi]=(ogg_uint16_t)val;
+ }
+ val=oc_pack_read(_opb,9);
+ nbase_mats=(int)val+1;
+ base_mats=_ogg_malloc(nbase_mats*sizeof(base_mats[0]));
+ if(base_mats==NULL)return TH_EFAULT;
+ for(bmi=0;bmi<nbase_mats;bmi++){
+ for(ci=0;ci<64;ci++){
+ val=oc_pack_read(_opb,8);
+ base_mats[bmi][ci]=(unsigned char)val;
+ }
+ }
+ nbits=oc_ilog(nbase_mats-1);
+ for(i=0;i<6;i++){
+ th_quant_ranges *qranges;
+ th_quant_base *qrbms;
+ int *qrsizes;
+ qti=i/3;
+ pli=i%3;
+ qranges=_qinfo->qi_ranges[qti]+pli;
+ if(i>0){
+ val=oc_pack_read1(_opb);
+ if(!val){
+ int qtj;
+ int plj;
+ if(qti>0){
+ val=oc_pack_read1(_opb);
+ if(val){
+ qtj=qti-1;
+ plj=pli;
+ }
+ else{
+ qtj=(i-1)/3;
+ plj=(i-1)%3;
+ }
+ }
+ else{
+ qtj=(i-1)/3;
+ plj=(i-1)%3;
+ }
+ *qranges=*(_qinfo->qi_ranges[qtj]+plj);
+ continue;
+ }
+ }
+ val=oc_pack_read(_opb,nbits);
+ indices[0]=(int)val;
+ for(qi=qri=0;qi<63;){
+ val=oc_pack_read(_opb,oc_ilog(62-qi));
+ sizes[qri]=(int)val+1;
+ qi+=(int)val+1;
+ val=oc_pack_read(_opb,nbits);
+ indices[++qri]=(int)val;
+ }
+ /*Note: The caller is responsible for cleaning up any partially
+ constructed qinfo.*/
+ if(qi>63){
+ _ogg_free(base_mats);
+ return TH_EBADHEADER;
+ }
+ qranges->nranges=qri;
+ qranges->sizes=qrsizes=(int *)_ogg_malloc(qri*sizeof(qrsizes[0]));
+ if(qranges->sizes==NULL){
+ /*Note: The caller is responsible for cleaning up any partially
+ constructed qinfo.*/
+ _ogg_free(base_mats);
+ return TH_EFAULT;
+ }
+ memcpy(qrsizes,sizes,qri*sizeof(qrsizes[0]));
+ qrbms=(th_quant_base *)_ogg_malloc((qri+1)*sizeof(qrbms[0]));
+ if(qrbms==NULL){
+ /*Note: The caller is responsible for cleaning up any partially
+ constructed qinfo.*/
+ _ogg_free(base_mats);
+ return TH_EFAULT;
+ }
+ qranges->base_matrices=(const th_quant_base *)qrbms;
+ do{
+ bmi=indices[qri];
+ /*Note: The caller is responsible for cleaning up any partially
+ constructed qinfo.*/
+ if(bmi>=nbase_mats){
+ _ogg_free(base_mats);
+ return TH_EBADHEADER;
+ }
+ memcpy(qrbms[qri],base_mats[bmi],sizeof(qrbms[qri]));
+ }
+ while(qri-->0);
+ }
+ _ogg_free(base_mats);
+ return 0;
+}
+
+void oc_quant_params_clear(th_quant_info *_qinfo){
+ int i;
+ for(i=6;i-->0;){
+ int qti;
+ int pli;
+ qti=i/3;
+ pli=i%3;
+ /*Clear any duplicate pointer references.*/
+ if(i>0){
+ int qtj;
+ int plj;
+ qtj=(i-1)/3;
+ plj=(i-1)%3;
+ if(_qinfo->qi_ranges[qti][pli].sizes==
+ _qinfo->qi_ranges[qtj][plj].sizes){
+ _qinfo->qi_ranges[qti][pli].sizes=NULL;
+ }
+ if(_qinfo->qi_ranges[qti][pli].base_matrices==
+ _qinfo->qi_ranges[qtj][plj].base_matrices){
+ _qinfo->qi_ranges[qti][pli].base_matrices=NULL;
+ }
+ }
+ if(qti>0){
+ if(_qinfo->qi_ranges[1][pli].sizes==
+ _qinfo->qi_ranges[0][pli].sizes){
+ _qinfo->qi_ranges[1][pli].sizes=NULL;
+ }
+ if(_qinfo->qi_ranges[1][pli].base_matrices==
+ _qinfo->qi_ranges[0][pli].base_matrices){
+ _qinfo->qi_ranges[1][pli].base_matrices=NULL;
+ }
+ }
+ /*Now free all the non-duplicate storage.*/
+ _ogg_free((void *)_qinfo->qi_ranges[qti][pli].sizes);
+ _ogg_free((void *)_qinfo->qi_ranges[qti][pli].base_matrices);
+ }
+}
diff --git a/media/libtheora/lib/dequant.h b/media/libtheora/lib/dequant.h
new file mode 100644
index 000000000..ef25838e3
--- /dev/null
+++ b/media/libtheora/lib/dequant.h
@@ -0,0 +1,27 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: dequant.h 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+#if !defined(_dequant_H)
+# define _dequant_H (1)
+# include "quant.h"
+# include "bitpack.h"
+
+int oc_quant_params_unpack(oc_pack_buf *_opb,
+ th_quant_info *_qinfo);
+void oc_quant_params_clear(th_quant_info *_qinfo);
+
+#endif
diff --git a/media/libtheora/lib/fragment.c b/media/libtheora/lib/fragment.c
new file mode 100644
index 000000000..4ba6af1b7
--- /dev/null
+++ b/media/libtheora/lib/fragment.c
@@ -0,0 +1,82 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: fragment.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+#include <string.h>
+#include "internal.h"
+
+void oc_frag_copy_c(unsigned char *_dst,const unsigned char *_src,int _ystride){
+ int i;
+ for(i=8;i-->0;){
+ memcpy(_dst,_src,8*sizeof(*_dst));
+ _dst+=_ystride;
+ _src+=_ystride;
+ }
+}
+
+/*Copies the fragments specified by the lists of fragment indices from one
+ frame to another.
+ _dst_frame: The reference frame to copy to.
+ _src_frame: The reference frame to copy from.
+ _ystride: The row stride of the reference frames.
+ _fragis: A pointer to a list of fragment indices.
+ _nfragis: The number of fragment indices to copy.
+ _frag_buf_offs: The offsets of fragments in the reference frames.*/
+void oc_frag_copy_list_c(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){
+ ptrdiff_t fragii;
+ for(fragii=0;fragii<_nfragis;fragii++){
+ ptrdiff_t frag_buf_off;
+ frag_buf_off=_frag_buf_offs[_fragis[fragii]];
+ oc_frag_copy_c(_dst_frame+frag_buf_off,
+ _src_frame+frag_buf_off,_ystride);
+ }
+}
+
+void oc_frag_recon_intra_c(unsigned char *_dst,int _ystride,
+ const ogg_int16_t _residue[64]){
+ int i;
+ for(i=0;i<8;i++){
+ int j;
+ for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+128);
+ _dst+=_ystride;
+ }
+}
+
+void oc_frag_recon_inter_c(unsigned char *_dst,
+ const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]){
+ int i;
+ for(i=0;i<8;i++){
+ int j;
+ for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+_src[j]);
+ _dst+=_ystride;
+ _src+=_ystride;
+ }
+}
+
+void oc_frag_recon_inter2_c(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]){
+ int i;
+ for(i=0;i<8;i++){
+ int j;
+ for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+(_src1[j]+_src2[j]>>1));
+ _dst+=_ystride;
+ _src1+=_ystride;
+ _src2+=_ystride;
+ }
+}
+
+void oc_restore_fpu_c(void){}
diff --git a/media/libtheora/lib/huffdec.c b/media/libtheora/lib/huffdec.c
new file mode 100644
index 000000000..fe013c611
--- /dev/null
+++ b/media/libtheora/lib/huffdec.c
@@ -0,0 +1,521 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: huffdec.c 17577 2010-10-29 04:00:07Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <ogg/ogg.h>
+#include "huffdec.h"
+#include "decint.h"
+
+
+
+/*Instead of storing every branching in the tree, subtrees can be collapsed
+ into one node, with a table of size 1<<nbits pointing directly to its
+ descedents nbits levels down.
+ This allows more than one bit to be read at a time, and avoids following all
+ the intermediate branches with next to no increased code complexity once
+ the collapsed tree has been built.
+ We do _not_ require that a subtree be complete to be collapsed, but instead
+ store duplicate pointers in the table, and record the actual depth of the
+ node below its parent.
+ This tells us the number of bits to advance the stream after reaching it.
+
+ This turns out to be equivalent to the method described in \cite{Hash95},
+ without the requirement that codewords be sorted by length.
+ If the codewords were sorted by length (so-called ``canonical-codes''), they
+ could be decoded much faster via either Lindell and Moffat's approach or
+ Hashemian's Condensed Huffman Code approach, the latter of which has an
+ extremely small memory footprint.
+ We can't use Choueka et al.'s finite state machine approach, which is
+ extremely fast, because we can't allow multiple symbols to be output at a
+ time; the codebook can and does change between symbols.
+ It also has very large memory requirements, which impairs cache coherency.
+
+ We store the tree packed in an array of 16-bit integers (words).
+ Each node consists of a single word, followed consecutively by two or more
+ indices of its children.
+ Let n be the value of this first word.
+ This is the number of bits that need to be read to traverse the node, and
+ must be positive.
+ 1<<n entries follow in the array, each an index to a child node.
+ If the child is positive, then it is the index of another internal node in
+ the table.
+ If the child is negative or zero, then it is a leaf node.
+ These are stored directly in the child pointer to save space, since they only
+ require a single word.
+ If a leaf node would have been encountered before reading n bits, then it is
+ duplicated the necessary number of times in this table.
+ Leaf nodes pack both a token value and their actual depth in the tree.
+ The token in the leaf node is (-leaf&255).
+ The number of bits that need to be consumed to reach the leaf, starting from
+ the current node, is (-leaf>>8).
+
+ @ARTICLE{Hash95,
+ author="Reza Hashemian",
+ title="Memory Efficient and High-Speed Search {Huffman} Coding",
+ journal="{IEEE} Transactions on Communications",
+ volume=43,
+ number=10,
+ pages="2576--2581",
+ month=Oct,
+ year=1995
+ }*/
+
+
+
+/*The map from external spec-defined tokens to internal tokens.
+ This is constructed so that any extra bits read with the original token value
+ can be masked off the least significant bits of its internal token index.
+ In addition, all of the tokens which require additional extra bits are placed
+ at the start of the list, and grouped by type.
+ OC_DCT_REPEAT_RUN3_TOKEN is placed first, as it is an extra-special case, so
+ giving it index 0 may simplify comparisons on some architectures.
+ These requirements require some substantial reordering.*/
+static const unsigned char OC_DCT_TOKEN_MAP[TH_NDCT_TOKENS]={
+ /*OC_DCT_EOB1_TOKEN (0 extra bits)*/
+ 15,
+ /*OC_DCT_EOB2_TOKEN (0 extra bits)*/
+ 16,
+ /*OC_DCT_EOB3_TOKEN (0 extra bits)*/
+ 17,
+ /*OC_DCT_REPEAT_RUN0_TOKEN (2 extra bits)*/
+ 88,
+ /*OC_DCT_REPEAT_RUN1_TOKEN (3 extra bits)*/
+ 80,
+ /*OC_DCT_REPEAT_RUN2_TOKEN (4 extra bits)*/
+ 1,
+ /*OC_DCT_REPEAT_RUN3_TOKEN (12 extra bits)*/
+ 0,
+ /*OC_DCT_SHORT_ZRL_TOKEN (3 extra bits)*/
+ 48,
+ /*OC_DCT_ZRL_TOKEN (6 extra bits)*/
+ 14,
+ /*OC_ONE_TOKEN (0 extra bits)*/
+ 56,
+ /*OC_MINUS_ONE_TOKEN (0 extra bits)*/
+ 57,
+ /*OC_TWO_TOKEN (0 extra bits)*/
+ 58,
+ /*OC_MINUS_TWO_TOKEN (0 extra bits)*/
+ 59,
+ /*OC_DCT_VAL_CAT2 (1 extra bit)*/
+ 60,
+ 62,
+ 64,
+ 66,
+ /*OC_DCT_VAL_CAT3 (2 extra bits)*/
+ 68,
+ /*OC_DCT_VAL_CAT4 (3 extra bits)*/
+ 72,
+ /*OC_DCT_VAL_CAT5 (4 extra bits)*/
+ 2,
+ /*OC_DCT_VAL_CAT6 (5 extra bits)*/
+ 4,
+ /*OC_DCT_VAL_CAT7 (6 extra bits)*/
+ 6,
+ /*OC_DCT_VAL_CAT8 (10 extra bits)*/
+ 8,
+ /*OC_DCT_RUN_CAT1A (1 extra bit)*/
+ 18,
+ 20,
+ 22,
+ 24,
+ 26,
+ /*OC_DCT_RUN_CAT1B (3 extra bits)*/
+ 32,
+ /*OC_DCT_RUN_CAT1C (4 extra bits)*/
+ 12,
+ /*OC_DCT_RUN_CAT2A (2 extra bits)*/
+ 28,
+ /*OC_DCT_RUN_CAT2B (3 extra bits)*/
+ 40
+};
+
+/*The log base 2 of number of internal tokens associated with each of the spec
+ tokens (i.e., how many of the extra bits are folded into the token value).
+ Increasing the maximum value beyond 3 will enlarge the amount of stack
+ required for tree construction.*/
+static const unsigned char OC_DCT_TOKEN_MAP_LOG_NENTRIES[TH_NDCT_TOKENS]={
+ 0,0,0,2,3,0,0,3,0,0,0,0,0,1,1,1,1,2,3,1,1,1,2,1,1,1,1,1,3,1,2,3
+};
+
+
+/*The size a lookup table is allowed to grow to relative to the number of
+ unique nodes it contains.
+ E.g., if OC_HUFF_SLUSH is 4, then at most 75% of the space in the tree is
+ wasted (1/4 of the space must be used).
+ Larger numbers can decode tokens with fewer read operations, while smaller
+ numbers may save more space.
+ With a sample file:
+ 32233473 read calls are required when no tree collapsing is done (100.0%).
+ 19269269 read calls are required when OC_HUFF_SLUSH is 1 (59.8%).
+ 11144969 read calls are required when OC_HUFF_SLUSH is 2 (34.6%).
+ 10538563 read calls are required when OC_HUFF_SLUSH is 4 (32.7%).
+ 10192578 read calls are required when OC_HUFF_SLUSH is 8 (31.6%).
+ Since a value of 2 gets us the vast majority of the speed-up with only a
+ small amount of wasted memory, this is what we use.
+ This value must be less than 128, or you could create a tree with more than
+ 32767 entries, which would overflow the 16-bit words used to index it.*/
+#define OC_HUFF_SLUSH (2)
+/*The root of the tree is on the fast path, and a larger value here is more
+ beneficial than elsewhere in the tree.
+ 7 appears to give the best performance, trading off between increased use of
+ the single-read fast path and cache footprint for the tables, though
+ obviously this will depend on your cache size.
+ Using 7 here, the VP3 tables are about twice as large compared to using 2.*/
+#define OC_ROOT_HUFF_SLUSH (7)
+
+
+
+/*Unpacks a Huffman codebook.
+ _opb: The buffer to unpack from.
+ _tokens: Stores a list of internal tokens, in the order they were found in
+ the codebook, and the lengths of their corresponding codewords.
+ This is enough to completely define the codebook, while minimizing
+ stack usage and avoiding temporary allocations (for platforms
+ where free() is a no-op).
+ Return: The number of internal tokens in the codebook, or a negative value
+ on error.*/
+int oc_huff_tree_unpack(oc_pack_buf *_opb,unsigned char _tokens[256][2]){
+ ogg_uint32_t code;
+ int len;
+ int ntokens;
+ int nleaves;
+ code=0;
+ len=ntokens=nleaves=0;
+ for(;;){
+ long bits;
+ bits=oc_pack_read1(_opb);
+ /*Only process nodes so long as there's more bits in the buffer.*/
+ if(oc_pack_bytes_left(_opb)<0)return TH_EBADHEADER;
+ /*Read an internal node:*/
+ if(!bits){
+ len++;
+ /*Don't allow codewords longer than 32 bits.*/
+ if(len>32)return TH_EBADHEADER;
+ }
+ /*Read a leaf node:*/
+ else{
+ ogg_uint32_t code_bit;
+ int neb;
+ int nentries;
+ int token;
+ /*Don't allow more than 32 spec-tokens per codebook.*/
+ if(++nleaves>32)return TH_EBADHEADER;
+ bits=oc_pack_read(_opb,OC_NDCT_TOKEN_BITS);
+ neb=OC_DCT_TOKEN_MAP_LOG_NENTRIES[bits];
+ token=OC_DCT_TOKEN_MAP[bits];
+ nentries=1<<neb;
+ while(nentries-->0){
+ _tokens[ntokens][0]=(unsigned char)token++;
+ _tokens[ntokens][1]=(unsigned char)(len+neb);
+ ntokens++;
+ }
+ code_bit=0x80000000U>>len-1;
+ while(len>0&&(code&code_bit)){
+ code^=code_bit;
+ code_bit<<=1;
+ len--;
+ }
+ if(len<=0)break;
+ code|=code_bit;
+ }
+ }
+ return ntokens;
+}
+
+/*Count how many tokens would be required to fill a subtree at depth _depth.
+ _tokens: A list of internal tokens, in the order they are found in the
+ codebook, and the lengths of their corresponding codewords.
+ _depth: The depth of the desired node in the corresponding tree structure.
+ Return: The number of tokens that belong to that subtree.*/
+static int oc_huff_subtree_tokens(unsigned char _tokens[][2],int _depth){
+ ogg_uint32_t code;
+ int ti;
+ code=0;
+ ti=0;
+ do{
+ if(_tokens[ti][1]-_depth<32)code+=0x80000000U>>_tokens[ti++][1]-_depth;
+ else{
+ /*Because of the expanded internal tokens, we can have codewords as long
+ as 35 bits.
+ A single recursion here is enough to advance past them.*/
+ code++;
+ ti+=oc_huff_subtree_tokens(_tokens+ti,_depth+31);
+ }
+ }
+ while(code<0x80000000U);
+ return ti;
+}
+
+/*Compute the number of bits to use for a collapsed tree node at the given
+ depth.
+ _tokens: A list of internal tokens, in the order they are found in the
+ codebook, and the lengths of their corresponding codewords.
+ _ntokens: The number of tokens corresponding to this tree node.
+ _depth: The depth of this tree node.
+ Return: The number of bits to use for a collapsed tree node rooted here.
+ This is always at least one, even if this was a leaf node.*/
+static int oc_huff_tree_collapse_depth(unsigned char _tokens[][2],
+ int _ntokens,int _depth){
+ int got_leaves;
+ int loccupancy;
+ int occupancy;
+ int slush;
+ int nbits;
+ int best_nbits;
+ slush=_depth>0?OC_HUFF_SLUSH:OC_ROOT_HUFF_SLUSH;
+ /*It's legal to have a tree with just a single node, which requires no bits
+ to decode and always returns the same token.
+ However, no encoder actually does this (yet).
+ To avoid a special case in oc_huff_token_decode(), we force the number of
+ lookahead bits to be at least one.
+ This will produce a tree that looks ahead one bit and then advances the
+ stream zero bits.*/
+ nbits=1;
+ occupancy=2;
+ got_leaves=1;
+ do{
+ int ti;
+ if(got_leaves)best_nbits=nbits;
+ nbits++;
+ got_leaves=0;
+ loccupancy=occupancy;
+ for(occupancy=ti=0;ti<_ntokens;occupancy++){
+ if(_tokens[ti][1]<_depth+nbits)ti++;
+ else if(_tokens[ti][1]==_depth+nbits){
+ got_leaves=1;
+ ti++;
+ }
+ else ti+=oc_huff_subtree_tokens(_tokens+ti,_depth+nbits);
+ }
+ }
+ while(occupancy>loccupancy&&occupancy*slush>=1<<nbits);
+ return best_nbits;
+}
+
+/*Determines the size in words of a Huffman tree node that represents a
+ subtree of depth _nbits.
+ _nbits: The depth of the subtree.
+ This must be greater than zero.
+ Return: The number of words required to store the node.*/
+static size_t oc_huff_node_size(int _nbits){
+ return 1+(1<<_nbits);
+}
+
+/*Produces a collapsed-tree representation of the given token list.
+ _tree: The storage for the collapsed Huffman tree.
+ This may be NULL to compute the required storage size instead of
+ constructing the tree.
+ _tokens: A list of internal tokens, in the order they are found in the
+ codebook, and the lengths of their corresponding codewords.
+ _ntokens: The number of tokens corresponding to this tree node.
+ Return: The number of words required to store the tree.*/
+#if defined(_MSC_VER) && _MSC_VER >= 1700
+#pragma optimize( "", off )
+#endif
+static size_t oc_huff_tree_collapse(ogg_int16_t *_tree,
+ unsigned char _tokens[][2],int _ntokens){
+ ogg_int16_t node[34];
+ unsigned char depth[34];
+ unsigned char last[34];
+ size_t ntree;
+ int ti;
+ int l;
+ depth[0]=0;
+ last[0]=(unsigned char)(_ntokens-1);
+ ntree=0;
+ ti=0;
+ l=0;
+ do{
+ int nbits;
+ nbits=oc_huff_tree_collapse_depth(_tokens+ti,last[l]+1-ti,depth[l]);
+ node[l]=(ogg_int16_t)ntree;
+ ntree+=oc_huff_node_size(nbits);
+ if(_tree!=NULL)_tree[node[l]++]=(ogg_int16_t)nbits;
+ do{
+ while(ti<=last[l]&&_tokens[ti][1]<=depth[l]+nbits){
+ if(_tree!=NULL){
+ ogg_int16_t leaf;
+ int nentries;
+ nentries=1<<depth[l]+nbits-_tokens[ti][1];
+ leaf=(ogg_int16_t)-(_tokens[ti][1]-depth[l]<<8|_tokens[ti][0]);
+ while(nentries-->0)_tree[node[l]++]=leaf;
+ }
+ ti++;
+ }
+ if(ti<=last[l]){
+ /*We need to recurse*/
+ depth[l+1]=(unsigned char)(depth[l]+nbits);
+ if(_tree!=NULL)_tree[node[l]++]=(ogg_int16_t)ntree;
+ l++;
+ last[l]=
+ (unsigned char)(ti+oc_huff_subtree_tokens(_tokens+ti,depth[l])-1);
+ break;
+ }
+ /*Pop back up a level of recursion.*/
+ else if(l-->0)nbits=depth[l+1]-depth[l];
+ }
+ while(l>=0);
+ }
+ while(l>=0);
+ return ntree;
+}
+#if defined(_MSC_VER) && _MSC_VER >= 1700
+#pragma optimize( "", on )
+#endif
+
+/*Unpacks a set of Huffman trees, and reduces them to a collapsed
+ representation.
+ _opb: The buffer to unpack the trees from.
+ _nodes: The table to fill with the Huffman trees.
+ Return: 0 on success, or a negative value on error.
+ The caller is responsible for cleaning up any partially initialized
+ _nodes on failure.*/
+int oc_huff_trees_unpack(oc_pack_buf *_opb,
+ ogg_int16_t *_nodes[TH_NHUFFMAN_TABLES]){
+ int i;
+ for(i=0;i<TH_NHUFFMAN_TABLES;i++){
+ unsigned char tokens[256][2];
+ int ntokens;
+ ogg_int16_t *tree;
+ size_t size;
+ /*Unpack the full tree into a temporary buffer.*/
+ ntokens=oc_huff_tree_unpack(_opb,tokens);
+ if(ntokens<0)return ntokens;
+ /*Figure out how big the collapsed tree will be and allocate space for it.*/
+ size=oc_huff_tree_collapse(NULL,tokens,ntokens);
+ /*This should never happen; if it does it means you set OC_HUFF_SLUSH or
+ OC_ROOT_HUFF_SLUSH too large.*/
+ if(size>32767)return TH_EIMPL;
+ tree=(ogg_int16_t *)_ogg_malloc(size*sizeof(*tree));
+ if(tree==NULL)return TH_EFAULT;
+ /*Construct the collapsed the tree.*/
+ oc_huff_tree_collapse(tree,tokens,ntokens);
+ _nodes[i]=tree;
+ }
+ return 0;
+}
+
+/*Determines the size in words of a Huffman subtree.
+ _tree: The complete Huffman tree.
+ _node: The index of the root of the desired subtree.
+ Return: The number of words required to store the tree.*/
+static size_t oc_huff_tree_size(const ogg_int16_t *_tree,int _node){
+ size_t size;
+ int nchildren;
+ int n;
+ int i;
+ n=_tree[_node];
+ size=oc_huff_node_size(n);
+ nchildren=1<<n;
+ i=0;
+ do{
+ int child;
+ child=_tree[_node+i+1];
+ if(child<=0)i+=1<<n-(-child>>8);
+ else{
+ size+=oc_huff_tree_size(_tree,child);
+ i++;
+ }
+ }
+ while(i<nchildren);
+ return size;
+}
+
+/*Makes a copy of the given set of Huffman trees.
+ _dst: The array to store the copy in.
+ _src: The array of trees to copy.*/
+int oc_huff_trees_copy(ogg_int16_t *_dst[TH_NHUFFMAN_TABLES],
+ const ogg_int16_t *const _src[TH_NHUFFMAN_TABLES]){
+ int total;
+ int i;
+ total=0;
+ for(i=0;i<TH_NHUFFMAN_TABLES;i++){
+ size_t size;
+ size=oc_huff_tree_size(_src[i],0);
+ total+=size;
+ _dst[i]=(ogg_int16_t *)_ogg_malloc(size*sizeof(*_dst[i]));
+ if(_dst[i]==NULL){
+ while(i-->0)_ogg_free(_dst[i]);
+ return TH_EFAULT;
+ }
+ memcpy(_dst[i],_src[i],size*sizeof(*_dst[i]));
+ }
+ return 0;
+}
+
+/*Frees the memory used by a set of Huffman trees.
+ _nodes: The array of trees to free.*/
+void oc_huff_trees_clear(ogg_int16_t *_nodes[TH_NHUFFMAN_TABLES]){
+ int i;
+ for(i=0;i<TH_NHUFFMAN_TABLES;i++)_ogg_free(_nodes[i]);
+}
+
+
+/*Unpacks a single token using the given Huffman tree.
+ _opb: The buffer to unpack the token from.
+ _node: The tree to unpack the token with.
+ Return: The token value.*/
+int oc_huff_token_decode_c(oc_pack_buf *_opb,const ogg_int16_t *_tree){
+ const unsigned char *ptr;
+ const unsigned char *stop;
+ oc_pb_window window;
+ int available;
+ long bits;
+ int node;
+ int n;
+ ptr=_opb->ptr;
+ window=_opb->window;
+ stop=_opb->stop;
+ available=_opb->bits;
+ node=0;
+ for(;;){
+ n=_tree[node];
+ if(n>available){
+ unsigned shift;
+ shift=OC_PB_WINDOW_SIZE-available;
+ do{
+ /*We don't bother setting eof because we won't check for it after we've
+ started decoding DCT tokens.*/
+ if(ptr>=stop){
+ shift=(unsigned)-OC_LOTS_OF_BITS;
+ break;
+ }
+ shift-=8;
+ window|=(oc_pb_window)*ptr++<<shift;
+ }
+ while(shift>=8);
+ /*Note: We never request more than 24 bits, so there's no need to fill in
+ the last partial byte here.*/
+ available=OC_PB_WINDOW_SIZE-shift;
+ }
+ bits=window>>OC_PB_WINDOW_SIZE-n;
+ node=_tree[node+1+bits];
+ if(node<=0)break;
+ window<<=n;
+ available-=n;
+ }
+ node=-node;
+ n=node>>8;
+ window<<=n;
+ available-=n;
+ _opb->ptr=ptr;
+ _opb->window=window;
+ _opb->bits=available;
+ return node&255;
+}
diff --git a/media/libtheora/lib/huffdec.h b/media/libtheora/lib/huffdec.h
new file mode 100644
index 000000000..2fd112a90
--- /dev/null
+++ b/media/libtheora/lib/huffdec.h
@@ -0,0 +1,32 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: huffdec.h 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_huffdec_H)
+# define _huffdec_H (1)
+# include "huffman.h"
+# include "bitpack.h"
+
+
+
+int oc_huff_trees_unpack(oc_pack_buf *_opb,
+ ogg_int16_t *_nodes[TH_NHUFFMAN_TABLES]);
+int oc_huff_trees_copy(ogg_int16_t *_dst[TH_NHUFFMAN_TABLES],
+ const ogg_int16_t *const _src[TH_NHUFFMAN_TABLES]);
+void oc_huff_trees_clear(ogg_int16_t *_nodes[TH_NHUFFMAN_TABLES]);
+int oc_huff_token_decode_c(oc_pack_buf *_opb,const ogg_int16_t *_node);
+
+#endif
diff --git a/media/libtheora/lib/huffman.h b/media/libtheora/lib/huffman.h
new file mode 100644
index 000000000..36cf7572e
--- /dev/null
+++ b/media/libtheora/lib/huffman.h
@@ -0,0 +1,70 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: huffman.h 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+#if !defined(_huffman_H)
+# define _hufffman_H (1)
+# include "theora/codec.h"
+# include "ocintrin.h"
+
+/*The range of valid quantized DCT coefficient values.
+ VP3 used 511 in the encoder, but the bitstream is capable of 580.*/
+#define OC_DCT_VAL_RANGE (580)
+
+#define OC_NDCT_TOKEN_BITS (5)
+
+#define OC_DCT_EOB1_TOKEN (0)
+#define OC_DCT_EOB2_TOKEN (1)
+#define OC_DCT_EOB3_TOKEN (2)
+#define OC_DCT_REPEAT_RUN0_TOKEN (3)
+#define OC_DCT_REPEAT_RUN1_TOKEN (4)
+#define OC_DCT_REPEAT_RUN2_TOKEN (5)
+#define OC_DCT_REPEAT_RUN3_TOKEN (6)
+
+#define OC_DCT_SHORT_ZRL_TOKEN (7)
+#define OC_DCT_ZRL_TOKEN (8)
+
+#define OC_ONE_TOKEN (9)
+#define OC_MINUS_ONE_TOKEN (10)
+#define OC_TWO_TOKEN (11)
+#define OC_MINUS_TWO_TOKEN (12)
+
+#define OC_DCT_VAL_CAT2 (13)
+#define OC_DCT_VAL_CAT3 (17)
+#define OC_DCT_VAL_CAT4 (18)
+#define OC_DCT_VAL_CAT5 (19)
+#define OC_DCT_VAL_CAT6 (20)
+#define OC_DCT_VAL_CAT7 (21)
+#define OC_DCT_VAL_CAT8 (22)
+
+#define OC_DCT_RUN_CAT1A (23)
+#define OC_DCT_RUN_CAT1B (28)
+#define OC_DCT_RUN_CAT1C (29)
+#define OC_DCT_RUN_CAT2A (30)
+#define OC_DCT_RUN_CAT2B (31)
+
+#define OC_NDCT_EOB_TOKEN_MAX (7)
+#define OC_NDCT_ZRL_TOKEN_MAX (9)
+#define OC_NDCT_VAL_MAX (23)
+#define OC_NDCT_VAL_CAT1_MAX (13)
+#define OC_NDCT_VAL_CAT2_MAX (17)
+#define OC_NDCT_VAL_CAT2_SIZE (OC_NDCT_VAL_CAT2_MAX-OC_DCT_VAL_CAT2)
+#define OC_NDCT_RUN_MAX (32)
+#define OC_NDCT_RUN_CAT1A_MAX (28)
+
+extern const unsigned char OC_DCT_TOKEN_EXTRA_BITS[TH_NDCT_TOKENS];
+
+#endif
diff --git a/media/libtheora/lib/idct.c b/media/libtheora/lib/idct.c
new file mode 100644
index 000000000..c56eb94c5
--- /dev/null
+++ b/media/libtheora/lib/idct.c
@@ -0,0 +1,329 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: idct.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#include <string.h>
+#include "internal.h"
+#include "dct.h"
+
+/*Performs an inverse 8 point Type-II DCT transform.
+ The output is scaled by a factor of 2 relative to the orthonormal version of
+ the transform.
+ _y: The buffer to store the result in.
+ Data will be placed in every 8th entry (e.g., in a column of an 8x8
+ block).
+ _x: The input coefficients.
+ The first 8 entries are used (e.g., from a row of an 8x8 block).*/
+static void idct8(ogg_int16_t *_y,const ogg_int16_t _x[8]){
+ ogg_int32_t t[8];
+ ogg_int32_t r;
+ /*Stage 1:*/
+ /*0-1 butterfly.*/
+ t[0]=OC_C4S4*(ogg_int16_t)(_x[0]+_x[4])>>16;
+ t[1]=OC_C4S4*(ogg_int16_t)(_x[0]-_x[4])>>16;
+ /*2-3 rotation by 6pi/16.*/
+ t[2]=(OC_C6S2*_x[2]>>16)-(OC_C2S6*_x[6]>>16);
+ t[3]=(OC_C2S6*_x[2]>>16)+(OC_C6S2*_x[6]>>16);
+ /*4-7 rotation by 7pi/16.*/
+ t[4]=(OC_C7S1*_x[1]>>16)-(OC_C1S7*_x[7]>>16);
+ /*5-6 rotation by 3pi/16.*/
+ t[5]=(OC_C3S5*_x[5]>>16)-(OC_C5S3*_x[3]>>16);
+ t[6]=(OC_C5S3*_x[5]>>16)+(OC_C3S5*_x[3]>>16);
+ t[7]=(OC_C1S7*_x[1]>>16)+(OC_C7S1*_x[7]>>16);
+ /*Stage 2:*/
+ /*4-5 butterfly.*/
+ r=t[4]+t[5];
+ t[5]=OC_C4S4*(ogg_int16_t)(t[4]-t[5])>>16;
+ t[4]=r;
+ /*7-6 butterfly.*/
+ r=t[7]+t[6];
+ t[6]=OC_C4S4*(ogg_int16_t)(t[7]-t[6])>>16;
+ t[7]=r;
+ /*Stage 3:*/
+ /*0-3 butterfly.*/
+ r=t[0]+t[3];
+ t[3]=t[0]-t[3];
+ t[0]=r;
+ /*1-2 butterfly.*/
+ r=t[1]+t[2];
+ t[2]=t[1]-t[2];
+ t[1]=r;
+ /*6-5 butterfly.*/
+ r=t[6]+t[5];
+ t[5]=t[6]-t[5];
+ t[6]=r;
+ /*Stage 4:*/
+ /*0-7 butterfly.*/
+ _y[0<<3]=(ogg_int16_t)(t[0]+t[7]);
+ /*1-6 butterfly.*/
+ _y[1<<3]=(ogg_int16_t)(t[1]+t[6]);
+ /*2-5 butterfly.*/
+ _y[2<<3]=(ogg_int16_t)(t[2]+t[5]);
+ /*3-4 butterfly.*/
+ _y[3<<3]=(ogg_int16_t)(t[3]+t[4]);
+ _y[4<<3]=(ogg_int16_t)(t[3]-t[4]);
+ _y[5<<3]=(ogg_int16_t)(t[2]-t[5]);
+ _y[6<<3]=(ogg_int16_t)(t[1]-t[6]);
+ _y[7<<3]=(ogg_int16_t)(t[0]-t[7]);
+}
+
+/*Performs an inverse 8 point Type-II DCT transform.
+ The output is scaled by a factor of 2 relative to the orthonormal version of
+ the transform.
+ _y: The buffer to store the result in.
+ Data will be placed in every 8th entry (e.g., in a column of an 8x8
+ block).
+ _x: The input coefficients.
+ Only the first 4 entries are used.
+ The other 4 are assumed to be 0.*/
+static void idct8_4(ogg_int16_t *_y,const ogg_int16_t _x[8]){
+ ogg_int32_t t[8];
+ ogg_int32_t r;
+ /*Stage 1:*/
+ t[0]=OC_C4S4*_x[0]>>16;
+ t[2]=OC_C6S2*_x[2]>>16;
+ t[3]=OC_C2S6*_x[2]>>16;
+ t[4]=OC_C7S1*_x[1]>>16;
+ t[5]=-(OC_C5S3*_x[3]>>16);
+ t[6]=OC_C3S5*_x[3]>>16;
+ t[7]=OC_C1S7*_x[1]>>16;
+ /*Stage 2:*/
+ r=t[4]+t[5];
+ t[5]=OC_C4S4*(ogg_int16_t)(t[4]-t[5])>>16;
+ t[4]=r;
+ r=t[7]+t[6];
+ t[6]=OC_C4S4*(ogg_int16_t)(t[7]-t[6])>>16;
+ t[7]=r;
+ /*Stage 3:*/
+ t[1]=t[0]+t[2];
+ t[2]=t[0]-t[2];
+ r=t[0]+t[3];
+ t[3]=t[0]-t[3];
+ t[0]=r;
+ r=t[6]+t[5];
+ t[5]=t[6]-t[5];
+ t[6]=r;
+ /*Stage 4:*/
+ _y[0<<3]=(ogg_int16_t)(t[0]+t[7]);
+ _y[1<<3]=(ogg_int16_t)(t[1]+t[6]);
+ _y[2<<3]=(ogg_int16_t)(t[2]+t[5]);
+ _y[3<<3]=(ogg_int16_t)(t[3]+t[4]);
+ _y[4<<3]=(ogg_int16_t)(t[3]-t[4]);
+ _y[5<<3]=(ogg_int16_t)(t[2]-t[5]);
+ _y[6<<3]=(ogg_int16_t)(t[1]-t[6]);
+ _y[7<<3]=(ogg_int16_t)(t[0]-t[7]);
+}
+
+/*Performs an inverse 8 point Type-II DCT transform.
+ The output is scaled by a factor of 2 relative to the orthonormal version of
+ the transform.
+ _y: The buffer to store the result in.
+ Data will be placed in every 8th entry (e.g., in a column of an 8x8
+ block).
+ _x: The input coefficients.
+ Only the first 3 entries are used.
+ The other 5 are assumed to be 0.*/
+static void idct8_3(ogg_int16_t *_y,const ogg_int16_t _x[8]){
+ ogg_int32_t t[8];
+ ogg_int32_t r;
+ /*Stage 1:*/
+ t[0]=OC_C4S4*_x[0]>>16;
+ t[2]=OC_C6S2*_x[2]>>16;
+ t[3]=OC_C2S6*_x[2]>>16;
+ t[4]=OC_C7S1*_x[1]>>16;
+ t[7]=OC_C1S7*_x[1]>>16;
+ /*Stage 2:*/
+ t[5]=OC_C4S4*t[4]>>16;
+ t[6]=OC_C4S4*t[7]>>16;
+ /*Stage 3:*/
+ t[1]=t[0]+t[2];
+ t[2]=t[0]-t[2];
+ r=t[0]+t[3];
+ t[3]=t[0]-t[3];
+ t[0]=r;
+ r=t[6]+t[5];
+ t[5]=t[6]-t[5];
+ t[6]=r;
+ /*Stage 4:*/
+ _y[0<<3]=(ogg_int16_t)(t[0]+t[7]);
+ _y[1<<3]=(ogg_int16_t)(t[1]+t[6]);
+ _y[2<<3]=(ogg_int16_t)(t[2]+t[5]);
+ _y[3<<3]=(ogg_int16_t)(t[3]+t[4]);
+ _y[4<<3]=(ogg_int16_t)(t[3]-t[4]);
+ _y[5<<3]=(ogg_int16_t)(t[2]-t[5]);
+ _y[6<<3]=(ogg_int16_t)(t[1]-t[6]);
+ _y[7<<3]=(ogg_int16_t)(t[0]-t[7]);
+}
+
+/*Performs an inverse 8 point Type-II DCT transform.
+ The output is scaled by a factor of 2 relative to the orthonormal version of
+ the transform.
+ _y: The buffer to store the result in.
+ Data will be placed in every 8th entry (e.g., in a column of an 8x8
+ block).
+ _x: The input coefficients.
+ Only the first 2 entries are used.
+ The other 6 are assumed to be 0.*/
+static void idct8_2(ogg_int16_t *_y,const ogg_int16_t _x[8]){
+ ogg_int32_t t[8];
+ ogg_int32_t r;
+ /*Stage 1:*/
+ t[0]=OC_C4S4*_x[0]>>16;
+ t[4]=OC_C7S1*_x[1]>>16;
+ t[7]=OC_C1S7*_x[1]>>16;
+ /*Stage 2:*/
+ t[5]=OC_C4S4*t[4]>>16;
+ t[6]=OC_C4S4*t[7]>>16;
+ /*Stage 3:*/
+ r=t[6]+t[5];
+ t[5]=t[6]-t[5];
+ t[6]=r;
+ /*Stage 4:*/
+ _y[0<<3]=(ogg_int16_t)(t[0]+t[7]);
+ _y[1<<3]=(ogg_int16_t)(t[0]+t[6]);
+ _y[2<<3]=(ogg_int16_t)(t[0]+t[5]);
+ _y[3<<3]=(ogg_int16_t)(t[0]+t[4]);
+ _y[4<<3]=(ogg_int16_t)(t[0]-t[4]);
+ _y[5<<3]=(ogg_int16_t)(t[0]-t[5]);
+ _y[6<<3]=(ogg_int16_t)(t[0]-t[6]);
+ _y[7<<3]=(ogg_int16_t)(t[0]-t[7]);
+}
+
+/*Performs an inverse 8 point Type-II DCT transform.
+ The output is scaled by a factor of 2 relative to the orthonormal version of
+ the transform.
+ _y: The buffer to store the result in.
+ Data will be placed in every 8th entry (e.g., in a column of an 8x8
+ block).
+ _x: The input coefficients.
+ Only the first entry is used.
+ The other 7 are assumed to be 0.*/
+static void idct8_1(ogg_int16_t *_y,const ogg_int16_t _x[1]){
+ _y[0<<3]=_y[1<<3]=_y[2<<3]=_y[3<<3]=
+ _y[4<<3]=_y[5<<3]=_y[6<<3]=_y[7<<3]=(ogg_int16_t)(OC_C4S4*_x[0]>>16);
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.
+ All coefficients but the first 3 in zig-zag scan order are assumed to be 0:
+ x x 0 0 0 0 0 0
+ x 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ _y: The buffer to store the result in.
+ This may be the same as _x.
+ _x: The input coefficients.*/
+static void oc_idct8x8_3(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ ogg_int16_t w[64];
+ int i;
+ /*Transform rows of x into columns of w.*/
+ idct8_2(w,_x);
+ idct8_1(w+1,_x+8);
+ /*Transform rows of w into columns of y.*/
+ for(i=0;i<8;i++)idct8_2(_y+i,w+i*8);
+ /*Adjust for the scale factor.*/
+ for(i=0;i<64;i++)_y[i]=(ogg_int16_t)(_y[i]+8>>4);
+ /*Clear input data for next block (decoder only).*/
+ if(_x!=_y)_x[0]=_x[1]=_x[8]=0;
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.
+ All coefficients but the first 10 in zig-zag scan order are assumed to be 0:
+ x x x x 0 0 0 0
+ x x x 0 0 0 0 0
+ x x 0 0 0 0 0 0
+ x 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ 0 0 0 0 0 0 0 0
+ _y: The buffer to store the result in.
+ This may be the same as _x.
+ _x: The input coefficients.*/
+static void oc_idct8x8_10(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ ogg_int16_t w[64];
+ int i;
+ /*Transform rows of x into columns of w.*/
+ idct8_4(w,_x);
+ idct8_3(w+1,_x+8);
+ idct8_2(w+2,_x+16);
+ idct8_1(w+3,_x+24);
+ /*Transform rows of w into columns of y.*/
+ for(i=0;i<8;i++)idct8_4(_y+i,w+i*8);
+ /*Adjust for the scale factor.*/
+ for(i=0;i<64;i++)_y[i]=(ogg_int16_t)(_y[i]+8>>4);
+ /*Clear input data for next block (decoder only).*/
+ if(_x!=_y)_x[0]=_x[1]=_x[2]=_x[3]=_x[8]=_x[9]=_x[10]=_x[16]=_x[17]=_x[24]=0;
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.
+ _y: The buffer to store the result in.
+ This may be the same as _x.
+ _x: The input coefficients.*/
+static void oc_idct8x8_slow(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ ogg_int16_t w[64];
+ int i;
+ /*Transform rows of x into columns of w.*/
+ for(i=0;i<8;i++)idct8(w+i,_x+i*8);
+ /*Transform rows of w into columns of y.*/
+ for(i=0;i<8;i++)idct8(_y+i,w+i*8);
+ /*Adjust for the scale factor.*/
+ for(i=0;i<64;i++)_y[i]=(ogg_int16_t)(_y[i]+8>>4);
+ if(_x!=_y)for(i=0;i<64;i++)_x[i]=0;
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.*/
+void oc_idct8x8_c(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi){
+ /*_last_zzi is subtly different from an actual count of the number of
+ coefficients we decoded for this block.
+ It contains the value of zzi BEFORE the final token in the block was
+ decoded.
+ In most cases this is an EOB token (the continuation of an EOB run from a
+ previous block counts), and so this is the same as the coefficient count.
+ However, in the case that the last token was NOT an EOB token, but filled
+ the block up with exactly 64 coefficients, _last_zzi will be less than 64.
+ Provided the last token was not a pure zero run, the minimum value it can
+ be is 46, and so that doesn't affect any of the cases in this routine.
+ However, if the last token WAS a pure zero run of length 63, then _last_zzi
+ will be 1 while the number of coefficients decoded is 64.
+ Thus, we will trigger the following special case, where the real
+ coefficient count would not.
+ Note also that a zero run of length 64 will give _last_zzi a value of 0,
+ but we still process the DC coefficient, which might have a non-zero value
+ due to DC prediction.
+ Although convoluted, this is arguably the correct behavior: it allows us to
+ use a smaller transform when the block ends with a long zero run instead
+ of a normal EOB token.
+ It could be smarter... multiple separate zero runs at the end of a block
+ will fool it, but an encoder that generates these really deserves what it
+ gets.
+ Needless to say we inherited this approach from VP3.*/
+ /*Then perform the iDCT.*/
+ if(_last_zzi<=3)oc_idct8x8_3(_y,_x);
+ else if(_last_zzi<=10)oc_idct8x8_10(_y,_x);
+ else oc_idct8x8_slow(_y,_x);
+}
diff --git a/media/libtheora/lib/info.c b/media/libtheora/lib/info.c
new file mode 100644
index 000000000..6b9762978
--- /dev/null
+++ b/media/libtheora/lib/info.c
@@ -0,0 +1,131 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: info.c 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include "internal.h"
+
+
+
+/*This is more or less the same as strncasecmp, but that doesn't exist
+ everywhere, and this is a fairly trivial function, so we include it.
+ Note: We take advantage of the fact that we know _n is less than or equal to
+ the length of at least one of the strings.*/
+static int oc_tagcompare(const char *_s1,const char *_s2,int _n){
+ int c;
+ for(c=0;c<_n;c++){
+ if(toupper(_s1[c])!=toupper(_s2[c]))return !0;
+ }
+ return _s1[c]!='=';
+}
+
+
+
+void th_info_init(th_info *_info){
+ memset(_info,0,sizeof(*_info));
+ _info->version_major=TH_VERSION_MAJOR;
+ _info->version_minor=TH_VERSION_MINOR;
+ _info->version_subminor=TH_VERSION_SUB;
+ _info->keyframe_granule_shift=6;
+}
+
+void th_info_clear(th_info *_info){
+ memset(_info,0,sizeof(*_info));
+}
+
+
+
+void th_comment_init(th_comment *_tc){
+ memset(_tc,0,sizeof(*_tc));
+}
+
+void th_comment_add(th_comment *_tc,char *_comment){
+ char **user_comments;
+ int *comment_lengths;
+ int comment_len;
+ user_comments=_ogg_realloc(_tc->user_comments,
+ (_tc->comments+2)*sizeof(*_tc->user_comments));
+ if(user_comments==NULL)return;
+ _tc->user_comments=user_comments;
+ comment_lengths=_ogg_realloc(_tc->comment_lengths,
+ (_tc->comments+2)*sizeof(*_tc->comment_lengths));
+ if(comment_lengths==NULL)return;
+ _tc->comment_lengths=comment_lengths;
+ comment_len=strlen(_comment);
+ comment_lengths[_tc->comments]=comment_len;
+ user_comments[_tc->comments]=_ogg_malloc(comment_len+1);
+ if(user_comments[_tc->comments]==NULL)return;
+ memcpy(_tc->user_comments[_tc->comments],_comment,comment_len+1);
+ _tc->comments++;
+ _tc->user_comments[_tc->comments]=NULL;
+}
+
+void th_comment_add_tag(th_comment *_tc,char *_tag,char *_val){
+ char *comment;
+ int tag_len;
+ int val_len;
+ tag_len=strlen(_tag);
+ val_len=strlen(_val);
+ /*+2 for '=' and '\0'.*/
+ comment=_ogg_malloc(tag_len+val_len+2);
+ if(comment==NULL)return;
+ memcpy(comment,_tag,tag_len);
+ comment[tag_len]='=';
+ memcpy(comment+tag_len+1,_val,val_len+1);
+ th_comment_add(_tc,comment);
+ _ogg_free(comment);
+}
+
+char *th_comment_query(th_comment *_tc,char *_tag,int _count){
+ long i;
+ int found;
+ int tag_len;
+ tag_len=strlen(_tag);
+ found=0;
+ for(i=0;i<_tc->comments;i++){
+ if(!oc_tagcompare(_tc->user_comments[i],_tag,tag_len)){
+ /*We return a pointer to the data, not a copy.*/
+ if(_count==found++)return _tc->user_comments[i]+tag_len+1;
+ }
+ }
+ /*Didn't find anything.*/
+ return NULL;
+}
+
+int th_comment_query_count(th_comment *_tc,char *_tag){
+ long i;
+ int tag_len;
+ int count;
+ tag_len=strlen(_tag);
+ count=0;
+ for(i=0;i<_tc->comments;i++){
+ if(!oc_tagcompare(_tc->user_comments[i],_tag,tag_len))count++;
+ }
+ return count;
+}
+
+void th_comment_clear(th_comment *_tc){
+ if(_tc!=NULL){
+ long i;
+ for(i=0;i<_tc->comments;i++)_ogg_free(_tc->user_comments[i]);
+ _ogg_free(_tc->user_comments);
+ _ogg_free(_tc->comment_lengths);
+ _ogg_free(_tc->vendor);
+ memset(_tc,0,sizeof(*_tc));
+ }
+}
diff --git a/media/libtheora/lib/internal.c b/media/libtheora/lib/internal.c
new file mode 100644
index 000000000..1b2611da1
--- /dev/null
+++ b/media/libtheora/lib/internal.c
@@ -0,0 +1,212 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: internal.c 17506 2010-10-13 02:52:41Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <limits.h>
+#include <string.h>
+#include "internal.h"
+
+
+
+/*A map from the index in the zig zag scan to the coefficient number in a
+ block.
+ All zig zag indices beyond 63 are sent to coefficient 64, so that zero runs
+ past the end of a block in bogus streams get mapped to a known location.*/
+const unsigned char OC_FZIG_ZAG[128]={
+ 0, 1, 8,16, 9, 2, 3,10,
+ 17,24,32,25,18,11, 4, 5,
+ 12,19,26,33,40,48,41,34,
+ 27,20,13, 6, 7,14,21,28,
+ 35,42,49,56,57,50,43,36,
+ 29,22,15,23,30,37,44,51,
+ 58,59,52,45,38,31,39,46,
+ 53,60,61,54,47,55,62,63,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64
+};
+
+/*A map from the coefficient number in a block to its index in the zig zag
+ scan.*/
+const unsigned char OC_IZIG_ZAG[64]={
+ 0, 1, 5, 6,14,15,27,28,
+ 2, 4, 7,13,16,26,29,42,
+ 3, 8,12,17,25,30,41,43,
+ 9,11,18,24,31,40,44,53,
+ 10,19,23,32,39,45,52,54,
+ 20,22,33,38,46,51,55,60,
+ 21,34,37,47,50,56,59,61,
+ 35,36,48,49,57,58,62,63
+};
+
+/*A map from physical macro block ordering to bitstream macro block
+ ordering within a super block.*/
+const unsigned char OC_MB_MAP[2][2]={{0,3},{1,2}};
+
+/*A list of the indices in the oc_mb.map array that can be valid for each of
+ the various chroma decimation types.*/
+const unsigned char OC_MB_MAP_IDXS[TH_PF_NFORMATS][12]={
+ {0,1,2,3,4,8},
+ {0,1,2,3,4,5,8,9},
+ {0,1,2,3,4,6,8,10},
+ {0,1,2,3,4,5,6,7,8,9,10,11}
+};
+
+/*The number of indices in the oc_mb.map array that can be valid for each of
+ the various chroma decimation types.*/
+const unsigned char OC_MB_MAP_NIDXS[TH_PF_NFORMATS]={6,8,8,12};
+
+/*The number of extra bits that are coded with each of the DCT tokens.
+ Each DCT token has some fixed number of additional bits (possibly 0) stored
+ after the token itself, containing, for example, coefficient magnitude,
+ sign bits, etc.*/
+const unsigned char OC_DCT_TOKEN_EXTRA_BITS[TH_NDCT_TOKENS]={
+ 0,0,0,2,3,4,12,3,6,
+ 0,0,0,0,
+ 1,1,1,1,2,3,4,5,6,10,
+ 1,1,1,1,1,3,4,
+ 2,3
+};
+
+
+
+int oc_ilog(unsigned _v){
+ int ret;
+ for(ret=0;_v;ret++)_v>>=1;
+ return ret;
+}
+
+
+
+void *oc_aligned_malloc(size_t _sz,size_t _align){
+ unsigned char *p;
+ if(_align-1>UCHAR_MAX||(_align&_align-1)||_sz>~(size_t)0-_align)return NULL;
+ p=(unsigned char *)_ogg_malloc(_sz+_align);
+ if(p!=NULL){
+ int offs;
+ offs=((p-(unsigned char *)0)-1&_align-1);
+ p[offs]=offs;
+ p+=offs+1;
+ }
+ return p;
+}
+
+void oc_aligned_free(void *_ptr){
+ unsigned char *p;
+ p=(unsigned char *)_ptr;
+ if(p!=NULL){
+ int offs;
+ offs=*--p;
+ _ogg_free(p-offs);
+ }
+}
+
+
+void **oc_malloc_2d(size_t _height,size_t _width,size_t _sz){
+ size_t rowsz;
+ size_t colsz;
+ size_t datsz;
+ char *ret;
+ colsz=_height*sizeof(void *);
+ rowsz=_sz*_width;
+ datsz=rowsz*_height;
+ /*Alloc array and row pointers.*/
+ ret=(char *)_ogg_malloc(datsz+colsz);
+ if(ret==NULL)return NULL;
+ /*Initialize the array.*/
+ if(ret!=NULL){
+ size_t i;
+ void **p;
+ char *datptr;
+ p=(void **)ret;
+ i=_height;
+ for(datptr=ret+colsz;i-->0;p++,datptr+=rowsz)*p=(void *)datptr;
+ }
+ return (void **)ret;
+}
+
+void **oc_calloc_2d(size_t _height,size_t _width,size_t _sz){
+ size_t colsz;
+ size_t rowsz;
+ size_t datsz;
+ char *ret;
+ colsz=_height*sizeof(void *);
+ rowsz=_sz*_width;
+ datsz=rowsz*_height;
+ /*Alloc array and row pointers.*/
+ ret=(char *)_ogg_calloc(datsz+colsz,1);
+ if(ret==NULL)return NULL;
+ /*Initialize the array.*/
+ if(ret!=NULL){
+ size_t i;
+ void **p;
+ char *datptr;
+ p=(void **)ret;
+ i=_height;
+ for(datptr=ret+colsz;i-->0;p++,datptr+=rowsz)*p=(void *)datptr;
+ }
+ return (void **)ret;
+}
+
+void oc_free_2d(void *_ptr){
+ _ogg_free(_ptr);
+}
+
+/*Fills in a Y'CbCr buffer with a pointer to the image data in the first
+ buffer, but with the opposite vertical orientation.
+ _dst: The destination buffer.
+ This can be the same as _src.
+ _src: The source buffer.*/
+void oc_ycbcr_buffer_flip(th_ycbcr_buffer _dst,
+ const th_ycbcr_buffer _src){
+ int pli;
+ for(pli=0;pli<3;pli++){
+ _dst[pli].width=_src[pli].width;
+ _dst[pli].height=_src[pli].height;
+ _dst[pli].stride=-_src[pli].stride;
+ _dst[pli].data=_src[pli].data
+ +(1-_dst[pli].height)*(ptrdiff_t)_dst[pli].stride;
+ }
+}
+
+const char *th_version_string(void){
+ return OC_VENDOR_STRING;
+}
+
+ogg_uint32_t th_version_number(void){
+ return (TH_VERSION_MAJOR<<16)+(TH_VERSION_MINOR<<8)+TH_VERSION_SUB;
+}
+
+/*Determines the packet type.
+ Note that this correctly interprets a 0-byte packet as a video data packet.
+ Return: 1 for a header packet, 0 for a data packet.*/
+int th_packet_isheader(ogg_packet *_op){
+ return _op->bytes>0?_op->packet[0]>>7:0;
+}
+
+/*Determines the frame type of a video data packet.
+ Note that this correctly interprets a 0-byte packet as a delta frame.
+ Return: 1 for a key frame, 0 for a delta frame, and -1 for a header
+ packet.*/
+int th_packet_iskeyframe(ogg_packet *_op){
+ return _op->bytes<=0?0:_op->packet[0]&0x80?-1:!(_op->packet[0]&0x40);
+}
diff --git a/media/libtheora/lib/internal.h b/media/libtheora/lib/internal.h
new file mode 100644
index 000000000..24e1b5125
--- /dev/null
+++ b/media/libtheora/lib/internal.h
@@ -0,0 +1,116 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: internal.h 17578 2010-10-29 04:21:26Z tterribe $
+
+ ********************************************************************/
+#if !defined(_internal_H)
+# define _internal_H (1)
+# include <stdlib.h>
+# include <limits.h>
+# if defined(HAVE_CONFIG_H)
+# include "config.h"
+# endif
+# include "theora/codec.h"
+# include "theora/theora.h"
+# include "ocintrin.h"
+
+# if !defined(__GNUC_PREREQ)
+# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
+# define __GNUC_PREREQ(_maj,_min) \
+ ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
+# else
+# define __GNUC_PREREQ(_maj,_min) 0
+# endif
+# endif
+
+# if defined(_MSC_VER)
+/*Disable missing EMMS warnings.*/
+# pragma warning(disable:4799)
+/*Thank you Microsoft, I know the order of operations.*/
+# pragma warning(disable:4554)
+# endif
+/*You, too, gcc.*/
+# if __GNUC_PREREQ(4,2)
+# pragma GCC diagnostic ignored "-Wparentheses"
+# endif
+
+/*Some assembly constructs require aligned operands.
+ The following macros are _only_ intended for structure member declarations.
+ Although they will sometimes work on stack variables, gcc will often silently
+ ignore them.
+ A separate set of macros could be made for manual stack alignment, but we
+ don't actually require it anywhere.*/
+# if defined(OC_X86_ASM)||defined(OC_ARM_ASM)
+# if defined(__GNUC__)
+# define OC_ALIGN8(expr) expr __attribute__((aligned(8)))
+# define OC_ALIGN16(expr) expr __attribute__((aligned(16)))
+# elif defined(_MSC_VER)
+# define OC_ALIGN8(expr) __declspec (align(8)) expr
+# define OC_ALIGN16(expr) __declspec (align(16)) expr
+# else
+# error "Alignment macros required for this platform."
+# endif
+# endif
+# if !defined(OC_ALIGN8)
+# define OC_ALIGN8(expr) expr
+# endif
+# if !defined(OC_ALIGN16)
+# define OC_ALIGN16(expr) expr
+# endif
+
+
+
+/*This library's version.*/
+# define OC_VENDOR_STRING "Xiph.Org libtheora 1.2.0alpha 20100924 (Ptalarbvorm)"
+
+/*Theora bitstream version.*/
+# define TH_VERSION_MAJOR (3)
+# define TH_VERSION_MINOR (2)
+# define TH_VERSION_SUB (1)
+# define TH_VERSION_CHECK(_info,_maj,_min,_sub) \
+ ((_info)->version_major>(_maj)||(_info)->version_major==(_maj)&& \
+ ((_info)->version_minor>(_min)||(_info)->version_minor==(_min)&& \
+ (_info)->version_subminor>=(_sub)))
+
+
+
+/*A map from the index in the zig zag scan to the coefficient number in a
+ block.*/
+extern const unsigned char OC_FZIG_ZAG[128];
+/*A map from the coefficient number in a block to its index in the zig zag
+ scan.*/
+extern const unsigned char OC_IZIG_ZAG[64];
+/*A map from physical macro block ordering to bitstream macro block
+ ordering within a super block.*/
+extern const unsigned char OC_MB_MAP[2][2];
+/*A list of the indices in the oc_mb_map array that can be valid for each of
+ the various chroma decimation types.*/
+extern const unsigned char OC_MB_MAP_IDXS[TH_PF_NFORMATS][12];
+/*The number of indices in the oc_mb_map array that can be valid for each of
+ the various chroma decimation types.*/
+extern const unsigned char OC_MB_MAP_NIDXS[TH_PF_NFORMATS];
+
+
+
+int oc_ilog(unsigned _v);
+void *oc_aligned_malloc(size_t _sz,size_t _align);
+void oc_aligned_free(void *_ptr);
+void **oc_malloc_2d(size_t _height,size_t _width,size_t _sz);
+void **oc_calloc_2d(size_t _height,size_t _width,size_t _sz);
+void oc_free_2d(void *_ptr);
+
+void oc_ycbcr_buffer_flip(th_ycbcr_buffer _dst,
+ const th_ycbcr_buffer _src);
+
+#endif
diff --git a/media/libtheora/lib/mathops.h b/media/libtheora/lib/mathops.h
new file mode 100644
index 000000000..a1a4f9df0
--- /dev/null
+++ b/media/libtheora/lib/mathops.h
@@ -0,0 +1,143 @@
+#if !defined(_mathops_H)
+# define _mathops_H (1)
+# include <ogg/ogg.h>
+
+# if __GNUC_PREREQ(3,4)
+# include <limits.h>
+/*Note the casts to (int) below: this prevents OC_CLZ{32|64}_OFFS from
+ "upgrading" the type of an entire expression to an (unsigned) size_t.*/
+# if INT_MAX>=2147483647
+# define OC_CLZ32_OFFS ((int)sizeof(unsigned)*CHAR_BIT)
+# define OC_CLZ32(_x) (__builtin_clz(_x))
+# elif LONG_MAX>=2147483647L
+# define OC_CLZ32_OFFS ((int)sizeof(unsigned long)*CHAR_BIT)
+# define OC_CLZ32(_x) (__builtin_clzl(_x))
+# endif
+# if INT_MAX>=9223372036854775807LL
+# define OC_CLZ64_OFFS ((int)sizeof(unsigned)*CHAR_BIT)
+# define OC_CLZ64(_x) (__builtin_clz(_x))
+# elif LONG_MAX>=9223372036854775807LL
+# define OC_CLZ64_OFFS ((int)sizeof(unsigned long)*CHAR_BIT)
+# define OC_CLZ64(_x) (__builtin_clzl(_x))
+# elif LLONG_MAX>=9223372036854775807LL|| \
+ __LONG_LONG_MAX__>=9223372036854775807LL
+# define OC_CLZ64_OFFS ((int)sizeof(unsigned long long)*CHAR_BIT)
+# define OC_CLZ64(_x) (__builtin_clzll(_x))
+# endif
+# endif
+
+
+
+/**
+ * oc_ilog32 - Integer binary logarithm of a 32-bit value.
+ * @_v: A 32-bit value.
+ * Returns floor(log2(_v))+1, or 0 if _v==0.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ * The OC_ILOG_32() or OC_ILOGNZ_32() macros may be able to use a builtin
+ * function instead, which should be faster.
+ */
+int oc_ilog32(ogg_uint32_t _v);
+/**
+ * oc_ilog64 - Integer binary logarithm of a 64-bit value.
+ * @_v: A 64-bit value.
+ * Returns floor(log2(_v))+1, or 0 if _v==0.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ * The OC_ILOG_64() or OC_ILOGNZ_64() macros may be able to use a builtin
+ * function instead, which should be faster.
+ */
+int oc_ilog64(ogg_int64_t _v);
+
+
+# if defined(OC_CLZ32)
+/**
+ * OC_ILOGNZ_32 - Integer binary logarithm of a non-zero 32-bit value.
+ * @_v: A non-zero 32-bit value.
+ * Returns floor(log2(_v))+1.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ * If _v is zero, the return value is undefined; use OC_ILOG_32() instead.
+ */
+# define OC_ILOGNZ_32(_v) (OC_CLZ32_OFFS-OC_CLZ32(_v))
+/**
+ * OC_ILOG_32 - Integer binary logarithm of a 32-bit value.
+ * @_v: A 32-bit value.
+ * Returns floor(log2(_v))+1, or 0 if _v==0.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ */
+# define OC_ILOG_32(_v) (OC_ILOGNZ_32(_v)&-!!(_v))
+# else
+# define OC_ILOGNZ_32(_v) (oc_ilog32(_v))
+# define OC_ILOG_32(_v) (oc_ilog32(_v))
+# endif
+
+# if defined(CLZ64)
+/**
+ * OC_ILOGNZ_64 - Integer binary logarithm of a non-zero 64-bit value.
+ * @_v: A non-zero 64-bit value.
+ * Returns floor(log2(_v))+1.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ * If _v is zero, the return value is undefined; use OC_ILOG_64() instead.
+ */
+# define OC_ILOGNZ_64(_v) (CLZ64_OFFS-CLZ64(_v))
+/**
+ * OC_ILOG_64 - Integer binary logarithm of a 64-bit value.
+ * @_v: A 64-bit value.
+ * Returns floor(log2(_v))+1, or 0 if _v==0.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ */
+# define OC_ILOG_64(_v) (OC_ILOGNZ_64(_v)&-!!(_v))
+# else
+# define OC_ILOGNZ_64(_v) (oc_ilog64(_v))
+# define OC_ILOG_64(_v) (oc_ilog64(_v))
+# endif
+
+# define OC_STATIC_ILOG0(_v) (!!(_v))
+# define OC_STATIC_ILOG1(_v) (((_v)&0x2)?2:OC_STATIC_ILOG0(_v))
+# define OC_STATIC_ILOG2(_v) \
+ (((_v)&0xC)?2+OC_STATIC_ILOG1((_v)>>2):OC_STATIC_ILOG1(_v))
+# define OC_STATIC_ILOG3(_v) \
+ (((_v)&0xF0)?4+OC_STATIC_ILOG2((_v)>>4):OC_STATIC_ILOG2(_v))
+# define OC_STATIC_ILOG4(_v) \
+ (((_v)&0xFF00)?8+OC_STATIC_ILOG3((_v)>>8):OC_STATIC_ILOG3(_v))
+# define OC_STATIC_ILOG5(_v) \
+ (((_v)&0xFFFF0000)?16+OC_STATIC_ILOG4((_v)>>16):OC_STATIC_ILOG4(_v))
+# define OC_STATIC_ILOG6(_v) \
+ (((_v)&0xFFFFFFFF00000000ULL)?32+OC_STATIC_ILOG5((_v)>>32):OC_STATIC_ILOG5(_v))
+/**
+ * OC_STATIC_ILOG_32 - The integer logarithm of an (unsigned, 32-bit) constant.
+ * @_v: A non-negative 32-bit constant.
+ * Returns floor(log2(_v))+1, or 0 if _v==0.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ * This macro is suitable for evaluation at compile time, but it should not be
+ * used on values that can change at runtime, as it operates via exhaustive
+ * search.
+ */
+# define OC_STATIC_ILOG_32(_v) (OC_STATIC_ILOG5((ogg_uint32_t)(_v)))
+/**
+ * OC_STATIC_ILOG_64 - The integer logarithm of an (unsigned, 64-bit) constant.
+ * @_v: A non-negative 64-bit constant.
+ * Returns floor(log2(_v))+1, or 0 if _v==0.
+ * This is the number of bits that would be required to represent _v in two's
+ * complement notation with all of the leading zeros stripped.
+ * This macro is suitable for evaluation at compile time, but it should not be
+ * used on values that can change at runtime, as it operates via exhaustive
+ * search.
+ */
+# define OC_STATIC_ILOG_64(_v) (OC_STATIC_ILOG6((ogg_int64_t)(_v)))
+
+#define OC_Q57(_v) ((ogg_int64_t)(_v)<<57)
+#define OC_Q10(_v) ((_v)<<10)
+
+ogg_int64_t oc_bexp64(ogg_int64_t _z);
+ogg_int64_t oc_blog64(ogg_int64_t _w);
+
+ogg_uint32_t oc_bexp32_q10(int _z);
+int oc_blog32_q10(ogg_uint32_t _w);
+
+#endif
diff --git a/media/libtheora/lib/ocintrin.h b/media/libtheora/lib/ocintrin.h
new file mode 100644
index 000000000..d49ebb215
--- /dev/null
+++ b/media/libtheora/lib/ocintrin.h
@@ -0,0 +1,128 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: ocintrin.h 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+/*Some common macros for potential platform-specific optimization.*/
+#include <math.h>
+#if !defined(_ocintrin_H)
+# define _ocintrin_H (1)
+
+/*Some specific platforms may have optimized intrinsic or inline assembly
+ versions of these functions which can substantially improve performance.
+ We define macros for them to allow easy incorporation of these non-ANSI
+ features.*/
+
+/*Note that we do not provide a macro for abs(), because it is provided as a
+ library function, which we assume is translated into an intrinsic to avoid
+ the function call overhead and then implemented in the smartest way for the
+ target platform.
+ With modern gcc (4.x), this is true: it uses cmov instructions if the
+ architecture supports it and branchless bit-twiddling if it does not (the
+ speed difference between the two approaches is not measurable).
+ Interestingly, the bit-twiddling method was patented in 2000 (US 6,073,150)
+ by Sun Microsystems, despite prior art dating back to at least 1996:
+ http://web.archive.org/web/19961201174141/www.x86.org/ftp/articles/pentopt/PENTOPT.TXT
+ On gcc 3.x, however, our assumption is not true, as abs() is translated to a
+ conditional jump, which is horrible on deeply piplined architectures (e.g.,
+ all consumer architectures for the past decade or more).
+ Also be warned that -C*abs(x) where C is a constant is mis-optimized as
+ abs(C*x) on every gcc release before 4.2.3.
+ See bug http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34130 */
+
+/*Modern gcc (4.x) can compile the naive versions of min and max with cmov if
+ given an appropriate architecture, but the branchless bit-twiddling versions
+ are just as fast, and do not require any special target architecture.
+ Earlier gcc versions (3.x) compiled both code to the same assembly
+ instructions, because of the way they represented ((_b)>(_a)) internally.*/
+#define OC_MAXI(_a,_b) ((_a)-((_a)-(_b)&-((_b)>(_a))))
+#define OC_MINI(_a,_b) ((_a)+((_b)-(_a)&-((_b)<(_a))))
+/*Clamps an integer into the given range.
+ If _a>_c, then the lower bound _a is respected over the upper bound _c (this
+ behavior is required to meet our documented API behavior).
+ _a: The lower bound.
+ _b: The value to clamp.
+ _c: The upper boud.*/
+#define OC_CLAMPI(_a,_b,_c) (OC_MAXI(_a,OC_MINI(_b,_c)))
+#define OC_CLAMP255(_x) ((unsigned char)((((_x)<0)-1)&((_x)|-((_x)>255))))
+/*This has a chance of compiling branchless, and is just as fast as the
+ bit-twiddling method, which is slightly less portable, since it relies on a
+ sign-extended rightshift, which is not guaranteed by ANSI (but present on
+ every relevant platform).*/
+#define OC_SIGNI(_a) (((_a)>0)-((_a)<0))
+/*Slightly more portable than relying on a sign-extended right-shift (which is
+ not guaranteed by ANSI), and just as fast, since gcc (3.x and 4.x both)
+ compile it into the right-shift anyway.*/
+#define OC_SIGNMASK(_a) (-((_a)<0))
+/*Divides an integer by a power of two, truncating towards 0.
+ _dividend: The integer to divide.
+ _shift: The non-negative power of two to divide by.
+ _rmask: (1<<_shift)-1*/
+#define OC_DIV_POW2(_dividend,_shift,_rmask)\
+ ((_dividend)+(OC_SIGNMASK(_dividend)&(_rmask))>>(_shift))
+/*Divides _x by 65536, truncating towards 0.*/
+#define OC_DIV2_16(_x) OC_DIV_POW2(_x,16,0xFFFF)
+/*Divides _x by 2, truncating towards 0.*/
+#define OC_DIV2(_x) OC_DIV_POW2(_x,1,0x1)
+/*Divides _x by 8, truncating towards 0.*/
+#define OC_DIV8(_x) OC_DIV_POW2(_x,3,0x7)
+/*Divides _x by 16, truncating towards 0.*/
+#define OC_DIV16(_x) OC_DIV_POW2(_x,4,0xF)
+/*Right shifts _dividend by _shift, adding _rval, and subtracting one for
+ negative dividends first.
+ When _rval is (1<<_shift-1), this is equivalent to division with rounding
+ ties away from zero.*/
+#define OC_DIV_ROUND_POW2(_dividend,_shift,_rval)\
+ ((_dividend)+OC_SIGNMASK(_dividend)+(_rval)>>(_shift))
+/*Divides a _x by 2, rounding towards even numbers.*/
+#define OC_DIV2_RE(_x) ((_x)+((_x)>>1&1)>>1)
+/*Divides a _x by (1<<(_shift)), rounding towards even numbers.*/
+#define OC_DIV_POW2_RE(_x,_shift) \
+ ((_x)+((_x)>>(_shift)&1)+((1<<(_shift))-1>>1)>>(_shift))
+/*Swaps two integers _a and _b if _a>_b.*/
+#define OC_SORT2I(_a,_b) \
+ do{ \
+ int t__; \
+ t__=((_a)^(_b))&-((_b)<(_a)); \
+ (_a)^=t__; \
+ (_b)^=t__; \
+ } \
+ while(0)
+
+/*Accesses one of four (signed) bytes given an index.
+ This can be used to avoid small lookup tables.*/
+#define OC_BYTE_TABLE32(_a,_b,_c,_d,_i) \
+ ((signed char) \
+ (((_a)&0xFF|((_b)&0xFF)<<8|((_c)&0xFF)<<16|((_d)&0xFF)<<24)>>(_i)*8))
+/*Accesses one of eight (unsigned) nibbles given an index.
+ This can be used to avoid small lookup tables.*/
+#define OC_UNIBBLE_TABLE32(_a,_b,_c,_d,_e,_f,_g,_h,_i) \
+ ((((_a)&0xF|((_b)&0xF)<<4|((_c)&0xF)<<8|((_d)&0xF)<<12| \
+ ((_e)&0xF)<<16|((_f)&0xF)<<20|((_g)&0xF)<<24|((_h)&0xF)<<28)>>(_i)*4)&0xF)
+
+
+
+/*All of these macros should expect floats as arguments.*/
+#define OC_MAXF(_a,_b) ((_a)<(_b)?(_b):(_a))
+#define OC_MINF(_a,_b) ((_a)>(_b)?(_b):(_a))
+#define OC_CLAMPF(_a,_b,_c) (OC_MINF(_a,OC_MAXF(_b,_c)))
+#define OC_FABSF(_f) ((float)fabs(_f))
+#define OC_SQRTF(_f) ((float)sqrt(_f))
+#define OC_POWF(_b,_e) ((float)pow(_b,_e))
+#define OC_LOGF(_f) ((float)log(_f))
+#define OC_IFLOORF(_f) ((int)floor(_f))
+#define OC_ICEILF(_f) ((int)ceil(_f))
+
+#endif
diff --git a/media/libtheora/lib/quant.c b/media/libtheora/lib/quant.c
new file mode 100644
index 000000000..c3f3f4771
--- /dev/null
+++ b/media/libtheora/lib/quant.c
@@ -0,0 +1,127 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: quant.c 17307 2010-06-27 06:02:15Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include <ogg/ogg.h>
+#include "quant.h"
+#include "decint.h"
+
+/*The maximum output of the DCT with +/- 255 inputs is +/- 8157.
+ These minimum quantizers ensure the result after quantization (and after
+ prediction for DC) will be no more than +/- 510.
+ The tokenization system can handle values up to +/- 580, so there is no need
+ to do any coefficient clamping.
+ I would rather have allowed smaller quantizers and had to clamp, but these
+ minimums were required when constructing the original VP3 matrices and have
+ been formalized in the spec.*/
+static const unsigned OC_DC_QUANT_MIN[2]={4<<2,8<<2};
+static const unsigned OC_AC_QUANT_MIN[2]={2<<2,4<<2};
+
+/*Initializes the dequantization tables from a set of quantizer info.
+ Currently the dequantizer (and elsewhere enquantizer) tables are expected to
+ be initialized as pointing to the storage reserved for them in the
+ oc_theora_state (resp. oc_enc_ctx) structure.
+ If some tables are duplicates of others, the pointers will be adjusted to
+ point to a single copy of the tables, but the storage for them will not be
+ freed.
+ If you're concerned about the memory footprint, the obvious thing to do is
+ to move the storage out of its fixed place in the structures and allocate
+ it on demand.
+ However, a much, much better option is to only store the quantization
+ matrices being used for the current frame, and to recalculate these as the
+ qi values change between frames (this is what VP3 did).*/
+void oc_dequant_tables_init(ogg_uint16_t *_dequant[64][3][2],
+ int _pp_dc_scale[64],const th_quant_info *_qinfo){
+ /*Coding mode: intra or inter.*/
+ int qti;
+ /*Y', C_b, C_r*/
+ int pli;
+ for(qti=0;qti<2;qti++)for(pli=0;pli<3;pli++){
+ /*Quality index.*/
+ int qi;
+ /*Range iterator.*/
+ int qri;
+ for(qi=0,qri=0;qri<=_qinfo->qi_ranges[qti][pli].nranges;qri++){
+ th_quant_base base;
+ ogg_uint32_t q;
+ int qi_start;
+ int qi_end;
+ memcpy(base,_qinfo->qi_ranges[qti][pli].base_matrices[qri],
+ sizeof(base));
+ qi_start=qi;
+ if(qri==_qinfo->qi_ranges[qti][pli].nranges)qi_end=qi+1;
+ else qi_end=qi+_qinfo->qi_ranges[qti][pli].sizes[qri];
+ /*Iterate over quality indicies in this range.*/
+ for(;;){
+ ogg_uint32_t qfac;
+ int zzi;
+ int ci;
+ /*In the original VP3.2 code, the rounding offset and the size of the
+ dead zone around 0 were controlled by a "sharpness" parameter.
+ The size of our dead zone is now controlled by the per-coefficient
+ quality thresholds returned by our HVS module.
+ We round down from a more accurate value when the quality of the
+ reconstruction does not fall below our threshold and it saves bits.
+ Hence, all of that VP3.2 code is gone from here, and the remaining
+ floating point code has been implemented as equivalent integer code
+ with exact precision.*/
+ qfac=(ogg_uint32_t)_qinfo->dc_scale[qi]*base[0];
+ /*For postprocessing, not dequantization.*/
+ if(_pp_dc_scale!=NULL)_pp_dc_scale[qi]=(int)(qfac/160);
+ /*Scale DC the coefficient from the proper table.*/
+ q=(qfac/100)<<2;
+ q=OC_CLAMPI(OC_DC_QUANT_MIN[qti],q,OC_QUANT_MAX);
+ _dequant[qi][pli][qti][0]=(ogg_uint16_t)q;
+ /*Now scale AC coefficients from the proper table.*/
+ for(zzi=1;zzi<64;zzi++){
+ q=((ogg_uint32_t)_qinfo->ac_scale[qi]*base[OC_FZIG_ZAG[zzi]]/100)<<2;
+ q=OC_CLAMPI(OC_AC_QUANT_MIN[qti],q,OC_QUANT_MAX);
+ _dequant[qi][pli][qti][zzi]=(ogg_uint16_t)q;
+ }
+ /*If this is a duplicate of a previous matrix, use that instead.
+ This simple check helps us improve cache coherency later.*/
+ {
+ int dupe;
+ int qtj;
+ int plj;
+ dupe=0;
+ for(qtj=0;qtj<=qti;qtj++){
+ for(plj=0;plj<(qtj<qti?3:pli);plj++){
+ if(!memcmp(_dequant[qi][pli][qti],_dequant[qi][plj][qtj],
+ sizeof(oc_quant_table))){
+ dupe=1;
+ break;
+ }
+ }
+ if(dupe)break;
+ }
+ if(dupe)_dequant[qi][pli][qti]=_dequant[qi][plj][qtj];
+ }
+ if(++qi>=qi_end)break;
+ /*Interpolate the next base matrix.*/
+ for(ci=0;ci<64;ci++){
+ base[ci]=(unsigned char)(
+ (2*((qi_end-qi)*_qinfo->qi_ranges[qti][pli].base_matrices[qri][ci]+
+ (qi-qi_start)*_qinfo->qi_ranges[qti][pli].base_matrices[qri+1][ci])
+ +_qinfo->qi_ranges[qti][pli].sizes[qri])/
+ (2*_qinfo->qi_ranges[qti][pli].sizes[qri]));
+ }
+ }
+ }
+ }
+}
diff --git a/media/libtheora/lib/quant.h b/media/libtheora/lib/quant.h
new file mode 100644
index 000000000..49ce13a65
--- /dev/null
+++ b/media/libtheora/lib/quant.h
@@ -0,0 +1,33 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: quant.h 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+#if !defined(_quant_H)
+# define _quant_H (1)
+# include "theora/codec.h"
+# include "ocintrin.h"
+
+typedef ogg_uint16_t oc_quant_table[64];
+
+
+/*Maximum scaled quantizer value.*/
+#define OC_QUANT_MAX (1024<<2)
+
+
+void oc_dequant_tables_init(ogg_uint16_t *_dequant[64][3][2],
+ int _pp_dc_scale[64],const th_quant_info *_qinfo);
+
+#endif
diff --git a/media/libtheora/lib/state.c b/media/libtheora/lib/state.c
new file mode 100644
index 000000000..5e7b0ae65
--- /dev/null
+++ b/media/libtheora/lib/state.c
@@ -0,0 +1,1260 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: state.c 17576 2010-10-29 01:07:51Z tterribe $
+
+ ********************************************************************/
+
+#include <stdlib.h>
+#include <string.h>
+#include "state.h"
+#if defined(OC_DUMP_IMAGES)
+# include <stdio.h>
+# include "png.h"
+#endif
+
+/*The function used to fill in the chroma plane motion vectors for a macro
+ block when 4 different motion vectors are specified in the luma plane.
+ This version is for use with chroma decimated in the X and Y directions
+ (4:2:0).
+ _cbmvs: The chroma block-level motion vectors to fill in.
+ _lbmvs: The luma block-level motion vectors.*/
+static void oc_set_chroma_mvs00(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
+ int dx;
+ int dy;
+ dx=OC_MV_X(_lbmvs[0])+OC_MV_X(_lbmvs[1])
+ +OC_MV_X(_lbmvs[2])+OC_MV_X(_lbmvs[3]);
+ dy=OC_MV_Y(_lbmvs[0])+OC_MV_Y(_lbmvs[1])
+ +OC_MV_Y(_lbmvs[2])+OC_MV_Y(_lbmvs[3]);
+ _cbmvs[0]=OC_MV(OC_DIV_ROUND_POW2(dx,2,2),OC_DIV_ROUND_POW2(dy,2,2));
+}
+
+/*The function used to fill in the chroma plane motion vectors for a macro
+ block when 4 different motion vectors are specified in the luma plane.
+ This version is for use with chroma decimated in the Y direction.
+ _cbmvs: The chroma block-level motion vectors to fill in.
+ _lbmvs: The luma block-level motion vectors.*/
+static void oc_set_chroma_mvs01(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
+ int dx;
+ int dy;
+ dx=OC_MV_X(_lbmvs[0])+OC_MV_X(_lbmvs[2]);
+ dy=OC_MV_Y(_lbmvs[0])+OC_MV_Y(_lbmvs[2]);
+ _cbmvs[0]=OC_MV(OC_DIV_ROUND_POW2(dx,1,1),OC_DIV_ROUND_POW2(dy,1,1));
+ dx=OC_MV_X(_lbmvs[1])+OC_MV_X(_lbmvs[3]);
+ dy=OC_MV_Y(_lbmvs[1])+OC_MV_Y(_lbmvs[3]);
+ _cbmvs[1]=OC_MV(OC_DIV_ROUND_POW2(dx,1,1),OC_DIV_ROUND_POW2(dy,1,1));
+}
+
+/*The function used to fill in the chroma plane motion vectors for a macro
+ block when 4 different motion vectors are specified in the luma plane.
+ This version is for use with chroma decimated in the X direction (4:2:2).
+ _cbmvs: The chroma block-level motion vectors to fill in.
+ _lbmvs: The luma block-level motion vectors.*/
+static void oc_set_chroma_mvs10(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
+ int dx;
+ int dy;
+ dx=OC_MV_X(_lbmvs[0])+OC_MV_X(_lbmvs[1]);
+ dy=OC_MV_Y(_lbmvs[0])+OC_MV_Y(_lbmvs[1]);
+ _cbmvs[0]=OC_MV(OC_DIV_ROUND_POW2(dx,1,1),OC_DIV_ROUND_POW2(dy,1,1));
+ dx=OC_MV_X(_lbmvs[2])+OC_MV_X(_lbmvs[3]);
+ dy=OC_MV_Y(_lbmvs[2])+OC_MV_Y(_lbmvs[3]);
+ _cbmvs[2]=OC_MV(OC_DIV_ROUND_POW2(dx,1,1),OC_DIV_ROUND_POW2(dy,1,1));
+}
+
+/*The function used to fill in the chroma plane motion vectors for a macro
+ block when 4 different motion vectors are specified in the luma plane.
+ This version is for use with no chroma decimation (4:4:4).
+ _cbmvs: The chroma block-level motion vectors to fill in.
+ _lmbmv: The luma macro-block level motion vector to fill in for use in
+ prediction.
+ _lbmvs: The luma block-level motion vectors.*/
+static void oc_set_chroma_mvs11(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]){
+ _cbmvs[0]=_lbmvs[0];
+ _cbmvs[1]=_lbmvs[1];
+ _cbmvs[2]=_lbmvs[2];
+ _cbmvs[3]=_lbmvs[3];
+}
+
+/*A table of functions used to fill in the chroma plane motion vectors for a
+ macro block when 4 different motion vectors are specified in the luma
+ plane.*/
+const oc_set_chroma_mvs_func OC_SET_CHROMA_MVS_TABLE[TH_PF_NFORMATS]={
+ (oc_set_chroma_mvs_func)oc_set_chroma_mvs00,
+ (oc_set_chroma_mvs_func)oc_set_chroma_mvs01,
+ (oc_set_chroma_mvs_func)oc_set_chroma_mvs10,
+ (oc_set_chroma_mvs_func)oc_set_chroma_mvs11
+};
+
+
+
+/*Returns the fragment index of the top-left block in a macro block.
+ This can be used to test whether or not the whole macro block is valid.
+ _sb_map: The super block map.
+ _quadi: The quadrant number.
+ Return: The index of the fragment of the upper left block in the macro
+ block, or -1 if the block lies outside the coded frame.*/
+static ptrdiff_t oc_sb_quad_top_left_frag(oc_sb_map_quad _sb_map[4],int _quadi){
+ /*It so happens that under the Hilbert curve ordering described below, the
+ upper-left block in each macro block is at index 0, except in macro block
+ 3, where it is at index 2.*/
+ return _sb_map[_quadi][_quadi&_quadi<<1];
+}
+
+/*Fills in the mapping from block positions to fragment numbers for a single
+ color plane.
+ This function also fills in the "valid" flag of each quadrant in the super
+ block flags.
+ _sb_maps: The array of super block maps for the color plane.
+ _sb_flags: The array of super block flags for the color plane.
+ _frag0: The index of the first fragment in the plane.
+ _hfrags: The number of horizontal fragments in a coded frame.
+ _vfrags: The number of vertical fragments in a coded frame.*/
+static void oc_sb_create_plane_mapping(oc_sb_map _sb_maps[],
+ oc_sb_flags _sb_flags[],ptrdiff_t _frag0,int _hfrags,int _vfrags){
+ /*Contains the (macro_block,block) indices for a 4x4 grid of
+ fragments.
+ The pattern is a 4x4 Hilbert space-filling curve.
+ A Hilbert curve has the nice property that as the curve grows larger, its
+ fractal dimension approaches 2.
+ The intuition is that nearby blocks in the curve are also close spatially,
+ with the previous element always an immediate neighbor, so that runs of
+ blocks should be well correlated.*/
+ static const int SB_MAP[4][4][2]={
+ {{0,0},{0,1},{3,2},{3,3}},
+ {{0,3},{0,2},{3,1},{3,0}},
+ {{1,0},{1,3},{2,0},{2,3}},
+ {{1,1},{1,2},{2,1},{2,2}}
+ };
+ ptrdiff_t yfrag;
+ unsigned sbi;
+ int y;
+ sbi=0;
+ yfrag=_frag0;
+ for(y=0;;y+=4){
+ int imax;
+ int x;
+ /*Figure out how many columns of blocks in this super block lie within the
+ image.*/
+ imax=_vfrags-y;
+ if(imax>4)imax=4;
+ else if(imax<=0)break;
+ for(x=0;;x+=4,sbi++){
+ ptrdiff_t xfrag;
+ int jmax;
+ int quadi;
+ int i;
+ /*Figure out how many rows of blocks in this super block lie within the
+ image.*/
+ jmax=_hfrags-x;
+ if(jmax>4)jmax=4;
+ else if(jmax<=0)break;
+ /*By default, set all fragment indices to -1.*/
+ memset(_sb_maps[sbi],0xFF,sizeof(_sb_maps[sbi]));
+ /*Fill in the fragment map for this super block.*/
+ xfrag=yfrag+x;
+ for(i=0;i<imax;i++){
+ int j;
+ for(j=0;j<jmax;j++){
+ _sb_maps[sbi][SB_MAP[i][j][0]][SB_MAP[i][j][1]]=xfrag+j;
+ }
+ xfrag+=_hfrags;
+ }
+ /*Mark which quadrants of this super block lie within the image.*/
+ for(quadi=0;quadi<4;quadi++){
+ _sb_flags[sbi].quad_valid|=
+ (oc_sb_quad_top_left_frag(_sb_maps[sbi],quadi)>=0)<<quadi;
+ }
+ }
+ yfrag+=_hfrags<<2;
+ }
+}
+
+/*Fills in the Y plane fragment map for a macro block given the fragment
+ coordinates of its upper-left hand corner.
+ _mb_map: The macro block map to fill.
+ _fplane: The description of the Y plane.
+ _xfrag0: The X location of the upper-left hand fragment in the luma plane.
+ _yfrag0: The Y location of the upper-left hand fragment in the luma plane.*/
+static void oc_mb_fill_ymapping(oc_mb_map_plane _mb_map[3],
+ const oc_fragment_plane *_fplane,int _xfrag0,int _yfrag0){
+ int i;
+ int j;
+ for(i=0;i<2;i++)for(j=0;j<2;j++){
+ _mb_map[0][i<<1|j]=(_yfrag0+i)*(ptrdiff_t)_fplane->nhfrags+_xfrag0+j;
+ }
+}
+
+/*Fills in the chroma plane fragment maps for a macro block.
+ This version is for use with chroma decimated in the X and Y directions
+ (4:2:0).
+ _mb_map: The macro block map to fill.
+ _fplanes: The descriptions of the fragment planes.
+ _xfrag0: The X location of the upper-left hand fragment in the luma plane.
+ _yfrag0: The Y location of the upper-left hand fragment in the luma plane.*/
+static void oc_mb_fill_cmapping00(oc_mb_map_plane _mb_map[3],
+ const oc_fragment_plane _fplanes[3],int _xfrag0,int _yfrag0){
+ ptrdiff_t fragi;
+ _xfrag0>>=1;
+ _yfrag0>>=1;
+ fragi=_yfrag0*(ptrdiff_t)_fplanes[1].nhfrags+_xfrag0;
+ _mb_map[1][0]=fragi+_fplanes[1].froffset;
+ _mb_map[2][0]=fragi+_fplanes[2].froffset;
+}
+
+/*Fills in the chroma plane fragment maps for a macro block.
+ This version is for use with chroma decimated in the Y direction.
+ _mb_map: The macro block map to fill.
+ _fplanes: The descriptions of the fragment planes.
+ _xfrag0: The X location of the upper-left hand fragment in the luma plane.
+ _yfrag0: The Y location of the upper-left hand fragment in the luma plane.*/
+static void oc_mb_fill_cmapping01(oc_mb_map_plane _mb_map[3],
+ const oc_fragment_plane _fplanes[3],int _xfrag0,int _yfrag0){
+ ptrdiff_t fragi;
+ int j;
+ _yfrag0>>=1;
+ fragi=_yfrag0*(ptrdiff_t)_fplanes[1].nhfrags+_xfrag0;
+ for(j=0;j<2;j++){
+ _mb_map[1][j]=fragi+_fplanes[1].froffset;
+ _mb_map[2][j]=fragi+_fplanes[2].froffset;
+ fragi++;
+ }
+}
+
+/*Fills in the chroma plane fragment maps for a macro block.
+ This version is for use with chroma decimated in the X direction (4:2:2).
+ _mb_map: The macro block map to fill.
+ _fplanes: The descriptions of the fragment planes.
+ _xfrag0: The X location of the upper-left hand fragment in the luma plane.
+ _yfrag0: The Y location of the upper-left hand fragment in the luma plane.*/
+static void oc_mb_fill_cmapping10(oc_mb_map_plane _mb_map[3],
+ const oc_fragment_plane _fplanes[3],int _xfrag0,int _yfrag0){
+ ptrdiff_t fragi;
+ int i;
+ _xfrag0>>=1;
+ fragi=_yfrag0*(ptrdiff_t)_fplanes[1].nhfrags+_xfrag0;
+ for(i=0;i<2;i++){
+ _mb_map[1][i<<1]=fragi+_fplanes[1].froffset;
+ _mb_map[2][i<<1]=fragi+_fplanes[2].froffset;
+ fragi+=_fplanes[1].nhfrags;
+ }
+}
+
+/*Fills in the chroma plane fragment maps for a macro block.
+ This version is for use with no chroma decimation (4:4:4).
+ This uses the already filled-in luma plane values.
+ _mb_map: The macro block map to fill.
+ _fplanes: The descriptions of the fragment planes.*/
+static void oc_mb_fill_cmapping11(oc_mb_map_plane _mb_map[3],
+ const oc_fragment_plane _fplanes[3]){
+ int k;
+ for(k=0;k<4;k++){
+ _mb_map[1][k]=_mb_map[0][k]+_fplanes[1].froffset;
+ _mb_map[2][k]=_mb_map[0][k]+_fplanes[2].froffset;
+ }
+}
+
+/*The function type used to fill in the chroma plane fragment maps for a
+ macro block.
+ _mb_map: The macro block map to fill.
+ _fplanes: The descriptions of the fragment planes.
+ _xfrag0: The X location of the upper-left hand fragment in the luma plane.
+ _yfrag0: The Y location of the upper-left hand fragment in the luma plane.*/
+typedef void (*oc_mb_fill_cmapping_func)(oc_mb_map_plane _mb_map[3],
+ const oc_fragment_plane _fplanes[3],int _xfrag0,int _yfrag0);
+
+/*A table of functions used to fill in the chroma plane fragment maps for a
+ macro block for each type of chrominance decimation.*/
+static const oc_mb_fill_cmapping_func OC_MB_FILL_CMAPPING_TABLE[4]={
+ oc_mb_fill_cmapping00,
+ oc_mb_fill_cmapping01,
+ oc_mb_fill_cmapping10,
+ (oc_mb_fill_cmapping_func)oc_mb_fill_cmapping11
+};
+
+/*Fills in the mapping from macro blocks to their corresponding fragment
+ numbers in each plane.
+ _mb_maps: The list of macro block maps.
+ _mb_modes: The list of macro block modes; macro blocks completely outside
+ the coded region are marked invalid.
+ _fplanes: The descriptions of the fragment planes.
+ _pixel_fmt: The chroma decimation type.*/
+static void oc_mb_create_mapping(oc_mb_map _mb_maps[],
+ signed char _mb_modes[],const oc_fragment_plane _fplanes[3],int _pixel_fmt){
+ oc_mb_fill_cmapping_func mb_fill_cmapping;
+ unsigned sbi;
+ int y;
+ mb_fill_cmapping=OC_MB_FILL_CMAPPING_TABLE[_pixel_fmt];
+ /*Loop through the luma plane super blocks.*/
+ for(sbi=y=0;y<_fplanes[0].nvfrags;y+=4){
+ int x;
+ for(x=0;x<_fplanes[0].nhfrags;x+=4,sbi++){
+ int ymb;
+ /*Loop through the macro blocks in each super block in display order.*/
+ for(ymb=0;ymb<2;ymb++){
+ int xmb;
+ for(xmb=0;xmb<2;xmb++){
+ unsigned mbi;
+ int mbx;
+ int mby;
+ mbi=sbi<<2|OC_MB_MAP[ymb][xmb];
+ mbx=x|xmb<<1;
+ mby=y|ymb<<1;
+ /*Initialize fragment indices to -1.*/
+ memset(_mb_maps[mbi],0xFF,sizeof(_mb_maps[mbi]));
+ /*Make sure this macro block is within the encoded region.*/
+ if(mbx>=_fplanes[0].nhfrags||mby>=_fplanes[0].nvfrags){
+ _mb_modes[mbi]=OC_MODE_INVALID;
+ continue;
+ }
+ /*Fill in the fragment indices for the luma plane.*/
+ oc_mb_fill_ymapping(_mb_maps[mbi],_fplanes,mbx,mby);
+ /*Fill in the fragment indices for the chroma planes.*/
+ (*mb_fill_cmapping)(_mb_maps[mbi],_fplanes,mbx,mby);
+ }
+ }
+ }
+ }
+}
+
+/*Marks the fragments which fall all or partially outside the displayable
+ region of the frame.
+ _state: The Theora state containing the fragments to be marked.*/
+static void oc_state_border_init(oc_theora_state *_state){
+ oc_fragment *frag;
+ oc_fragment *yfrag_end;
+ oc_fragment *xfrag_end;
+ oc_fragment_plane *fplane;
+ int crop_x0;
+ int crop_y0;
+ int crop_xf;
+ int crop_yf;
+ int pli;
+ int y;
+ int x;
+ /*The method we use here is slow, but the code is dead simple and handles
+ all the special cases easily.
+ We only ever need to do it once.*/
+ /*Loop through the fragments, marking those completely outside the
+ displayable region and constructing a border mask for those that straddle
+ the border.*/
+ _state->nborders=0;
+ yfrag_end=frag=_state->frags;
+ for(pli=0;pli<3;pli++){
+ fplane=_state->fplanes+pli;
+ /*Set up the cropping rectangle for this plane.*/
+ crop_x0=_state->info.pic_x;
+ crop_xf=_state->info.pic_x+_state->info.pic_width;
+ crop_y0=_state->info.pic_y;
+ crop_yf=_state->info.pic_y+_state->info.pic_height;
+ if(pli>0){
+ if(!(_state->info.pixel_fmt&1)){
+ crop_x0=crop_x0>>1;
+ crop_xf=crop_xf+1>>1;
+ }
+ if(!(_state->info.pixel_fmt&2)){
+ crop_y0=crop_y0>>1;
+ crop_yf=crop_yf+1>>1;
+ }
+ }
+ y=0;
+ for(yfrag_end+=fplane->nfrags;frag<yfrag_end;y+=8){
+ x=0;
+ for(xfrag_end=frag+fplane->nhfrags;frag<xfrag_end;frag++,x+=8){
+ /*First check to see if this fragment is completely outside the
+ displayable region.*/
+ /*Note the special checks for an empty cropping rectangle.
+ This guarantees that if we count a fragment as straddling the
+ border below, at least one pixel in the fragment will be inside
+ the displayable region.*/
+ if(x+8<=crop_x0||crop_xf<=x||y+8<=crop_y0||crop_yf<=y||
+ crop_x0>=crop_xf||crop_y0>=crop_yf){
+ frag->invalid=1;
+ }
+ /*Otherwise, check to see if it straddles the border.*/
+ else if(x<crop_x0&&crop_x0<x+8||x<crop_xf&&crop_xf<x+8||
+ y<crop_y0&&crop_y0<y+8||y<crop_yf&&crop_yf<y+8){
+ ogg_int64_t mask;
+ int npixels;
+ int i;
+ mask=npixels=0;
+ for(i=0;i<8;i++){
+ int j;
+ for(j=0;j<8;j++){
+ if(x+j>=crop_x0&&x+j<crop_xf&&y+i>=crop_y0&&y+i<crop_yf){
+ mask|=(ogg_int64_t)1<<(i<<3|j);
+ npixels++;
+ }
+ }
+ }
+ /*Search the fragment array for border info with the same pattern.
+ In general, there will be at most 8 different patterns (per
+ plane).*/
+ for(i=0;;i++){
+ if(i>=_state->nborders){
+ _state->nborders++;
+ _state->borders[i].mask=mask;
+ _state->borders[i].npixels=npixels;
+ }
+ else if(_state->borders[i].mask!=mask)continue;
+ frag->borderi=i;
+ break;
+ }
+ }
+ else frag->borderi=-1;
+ }
+ }
+ }
+}
+
+static int oc_state_frarray_init(oc_theora_state *_state){
+ int yhfrags;
+ int yvfrags;
+ int chfrags;
+ int cvfrags;
+ ptrdiff_t yfrags;
+ ptrdiff_t cfrags;
+ ptrdiff_t nfrags;
+ unsigned yhsbs;
+ unsigned yvsbs;
+ unsigned chsbs;
+ unsigned cvsbs;
+ unsigned ysbs;
+ unsigned csbs;
+ unsigned nsbs;
+ size_t nmbs;
+ int hdec;
+ int vdec;
+ int pli;
+ /*Figure out the number of fragments in each plane.*/
+ /*These parameters have already been validated to be multiples of 16.*/
+ yhfrags=_state->info.frame_width>>3;
+ yvfrags=_state->info.frame_height>>3;
+ hdec=!(_state->info.pixel_fmt&1);
+ vdec=!(_state->info.pixel_fmt&2);
+ chfrags=yhfrags+hdec>>hdec;
+ cvfrags=yvfrags+vdec>>vdec;
+ yfrags=yhfrags*(ptrdiff_t)yvfrags;
+ cfrags=chfrags*(ptrdiff_t)cvfrags;
+ nfrags=yfrags+2*cfrags;
+ /*Figure out the number of super blocks in each plane.*/
+ yhsbs=yhfrags+3>>2;
+ yvsbs=yvfrags+3>>2;
+ chsbs=chfrags+3>>2;
+ cvsbs=cvfrags+3>>2;
+ ysbs=yhsbs*yvsbs;
+ csbs=chsbs*cvsbs;
+ nsbs=ysbs+2*csbs;
+ nmbs=(size_t)ysbs<<2;
+ /*Check for overflow.
+ We support the ridiculous upper limits of the specification (1048560 by
+ 1048560, or 3 TB frames) if the target architecture has 64-bit pointers,
+ but for those with 32-bit pointers (or smaller!) we have to check.
+ If the caller wants to prevent denial-of-service by imposing a more
+ reasonable upper limit on the size of attempted allocations, they must do
+ so themselves; we have no platform independent way to determine how much
+ system memory there is nor an application-independent way to decide what a
+ "reasonable" allocation is.*/
+ if(yfrags/yhfrags!=yvfrags||2*cfrags<cfrags||nfrags<yfrags||
+ ysbs/yhsbs!=yvsbs||2*csbs<csbs||nsbs<ysbs||nmbs>>2!=ysbs){
+ return TH_EIMPL;
+ }
+ /*Initialize the fragment array.*/
+ _state->fplanes[0].nhfrags=yhfrags;
+ _state->fplanes[0].nvfrags=yvfrags;
+ _state->fplanes[0].froffset=0;
+ _state->fplanes[0].nfrags=yfrags;
+ _state->fplanes[0].nhsbs=yhsbs;
+ _state->fplanes[0].nvsbs=yvsbs;
+ _state->fplanes[0].sboffset=0;
+ _state->fplanes[0].nsbs=ysbs;
+ _state->fplanes[1].nhfrags=_state->fplanes[2].nhfrags=chfrags;
+ _state->fplanes[1].nvfrags=_state->fplanes[2].nvfrags=cvfrags;
+ _state->fplanes[1].froffset=yfrags;
+ _state->fplanes[2].froffset=yfrags+cfrags;
+ _state->fplanes[1].nfrags=_state->fplanes[2].nfrags=cfrags;
+ _state->fplanes[1].nhsbs=_state->fplanes[2].nhsbs=chsbs;
+ _state->fplanes[1].nvsbs=_state->fplanes[2].nvsbs=cvsbs;
+ _state->fplanes[1].sboffset=ysbs;
+ _state->fplanes[2].sboffset=ysbs+csbs;
+ _state->fplanes[1].nsbs=_state->fplanes[2].nsbs=csbs;
+ _state->nfrags=nfrags;
+ _state->frags=_ogg_calloc(nfrags,sizeof(*_state->frags));
+ _state->frag_mvs=_ogg_malloc(nfrags*sizeof(*_state->frag_mvs));
+ _state->nsbs=nsbs;
+ _state->sb_maps=_ogg_malloc(nsbs*sizeof(*_state->sb_maps));
+ _state->sb_flags=_ogg_calloc(nsbs,sizeof(*_state->sb_flags));
+ _state->nhmbs=yhsbs<<1;
+ _state->nvmbs=yvsbs<<1;
+ _state->nmbs=nmbs;
+ _state->mb_maps=_ogg_calloc(nmbs,sizeof(*_state->mb_maps));
+ _state->mb_modes=_ogg_calloc(nmbs,sizeof(*_state->mb_modes));
+ _state->coded_fragis=_ogg_malloc(nfrags*sizeof(*_state->coded_fragis));
+ if(_state->frags==NULL||_state->frag_mvs==NULL||_state->sb_maps==NULL||
+ _state->sb_flags==NULL||_state->mb_maps==NULL||_state->mb_modes==NULL||
+ _state->coded_fragis==NULL){
+ return TH_EFAULT;
+ }
+ /*Create the mapping from super blocks to fragments.*/
+ for(pli=0;pli<3;pli++){
+ oc_fragment_plane *fplane;
+ fplane=_state->fplanes+pli;
+ oc_sb_create_plane_mapping(_state->sb_maps+fplane->sboffset,
+ _state->sb_flags+fplane->sboffset,fplane->froffset,
+ fplane->nhfrags,fplane->nvfrags);
+ }
+ /*Create the mapping from macro blocks to fragments.*/
+ oc_mb_create_mapping(_state->mb_maps,_state->mb_modes,
+ _state->fplanes,_state->info.pixel_fmt);
+ /*Initialize the invalid and borderi fields of each fragment.*/
+ oc_state_border_init(_state);
+ return 0;
+}
+
+static void oc_state_frarray_clear(oc_theora_state *_state){
+ _ogg_free(_state->coded_fragis);
+ _ogg_free(_state->mb_modes);
+ _ogg_free(_state->mb_maps);
+ _ogg_free(_state->sb_flags);
+ _ogg_free(_state->sb_maps);
+ _ogg_free(_state->frag_mvs);
+ _ogg_free(_state->frags);
+}
+
+
+/*Initializes the buffers used for reconstructed frames.
+ These buffers are padded with 16 extra pixels on each side, to allow
+ unrestricted motion vectors without special casing the boundary.
+ If chroma is decimated in either direction, the padding is reduced by a
+ factor of 2 on the appropriate sides.
+ _nrefs: The number of reference buffers to init; must be in the range 3...6.*/
+static int oc_state_ref_bufs_init(oc_theora_state *_state,int _nrefs){
+ th_info *info;
+ unsigned char *ref_frame_data;
+ size_t ref_frame_data_sz;
+ size_t ref_frame_sz;
+ size_t yplane_sz;
+ size_t cplane_sz;
+ int yhstride;
+ int yheight;
+ int chstride;
+ int cheight;
+ ptrdiff_t align;
+ ptrdiff_t yoffset;
+ ptrdiff_t coffset;
+ ptrdiff_t *frag_buf_offs;
+ ptrdiff_t fragi;
+ int hdec;
+ int vdec;
+ int rfi;
+ int pli;
+ if(_nrefs<3||_nrefs>6)return TH_EINVAL;
+ info=&_state->info;
+ /*Compute the image buffer parameters for each plane.*/
+ hdec=!(info->pixel_fmt&1);
+ vdec=!(info->pixel_fmt&2);
+ yhstride=info->frame_width+2*OC_UMV_PADDING;
+ yheight=info->frame_height+2*OC_UMV_PADDING;
+ /*Require 16-byte aligned rows in the chroma planes.*/
+ chstride=(yhstride>>hdec)+15&~15;
+ cheight=yheight>>vdec;
+ yplane_sz=yhstride*(size_t)yheight;
+ cplane_sz=chstride*(size_t)cheight;
+ yoffset=OC_UMV_PADDING+OC_UMV_PADDING*(ptrdiff_t)yhstride;
+ coffset=(OC_UMV_PADDING>>hdec)+(OC_UMV_PADDING>>vdec)*(ptrdiff_t)chstride;
+ /*Although we guarantee the rows of the chroma planes are a multiple of 16
+ bytes, the initial padding on the first row may only be 8 bytes.
+ Compute the offset needed to the actual image data to a multiple of 16.*/
+ align=-coffset&15;
+ ref_frame_sz=yplane_sz+2*cplane_sz+16;
+ ref_frame_data_sz=_nrefs*ref_frame_sz;
+ /*Check for overflow.
+ The same caveats apply as for oc_state_frarray_init().*/
+ if(yplane_sz/yhstride!=(size_t)yheight||2*cplane_sz+16<cplane_sz||
+ ref_frame_sz<yplane_sz||ref_frame_data_sz/_nrefs!=ref_frame_sz){
+ return TH_EIMPL;
+ }
+ ref_frame_data=oc_aligned_malloc(ref_frame_data_sz,16);
+ frag_buf_offs=_state->frag_buf_offs=
+ _ogg_malloc(_state->nfrags*sizeof(*frag_buf_offs));
+ if(ref_frame_data==NULL||frag_buf_offs==NULL){
+ _ogg_free(frag_buf_offs);
+ oc_aligned_free(ref_frame_data);
+ return TH_EFAULT;
+ }
+ /*Set up the width, height and stride for the image buffers.*/
+ _state->ref_frame_bufs[0][0].width=info->frame_width;
+ _state->ref_frame_bufs[0][0].height=info->frame_height;
+ _state->ref_frame_bufs[0][0].stride=yhstride;
+ _state->ref_frame_bufs[0][1].width=_state->ref_frame_bufs[0][2].width=
+ info->frame_width>>hdec;
+ _state->ref_frame_bufs[0][1].height=_state->ref_frame_bufs[0][2].height=
+ info->frame_height>>vdec;
+ _state->ref_frame_bufs[0][1].stride=_state->ref_frame_bufs[0][2].stride=
+ chstride;
+ for(rfi=1;rfi<_nrefs;rfi++){
+ memcpy(_state->ref_frame_bufs[rfi],_state->ref_frame_bufs[0],
+ sizeof(_state->ref_frame_bufs[0]));
+ }
+ _state->ref_frame_handle=ref_frame_data;
+ /*Set up the data pointers for the image buffers.*/
+ for(rfi=0;rfi<_nrefs;rfi++){
+ _state->ref_frame_bufs[rfi][0].data=ref_frame_data+yoffset;
+ ref_frame_data+=yplane_sz+align;
+ _state->ref_frame_bufs[rfi][1].data=ref_frame_data+coffset;
+ ref_frame_data+=cplane_sz;
+ _state->ref_frame_bufs[rfi][2].data=ref_frame_data+coffset;
+ ref_frame_data+=cplane_sz+(16-align);
+ /*Flip the buffer upside down.
+ This allows us to decode Theora's bottom-up frames in their natural
+ order, yet return a top-down buffer with a positive stride to the user.*/
+ oc_ycbcr_buffer_flip(_state->ref_frame_bufs[rfi],
+ _state->ref_frame_bufs[rfi]);
+ }
+ _state->ref_ystride[0]=-yhstride;
+ _state->ref_ystride[1]=_state->ref_ystride[2]=-chstride;
+ /*Initialize the fragment buffer offsets.*/
+ ref_frame_data=_state->ref_frame_bufs[0][0].data;
+ fragi=0;
+ for(pli=0;pli<3;pli++){
+ th_img_plane *iplane;
+ oc_fragment_plane *fplane;
+ unsigned char *vpix;
+ ptrdiff_t stride;
+ ptrdiff_t vfragi_end;
+ int nhfrags;
+ iplane=_state->ref_frame_bufs[0]+pli;
+ fplane=_state->fplanes+pli;
+ vpix=iplane->data;
+ vfragi_end=fplane->froffset+fplane->nfrags;
+ nhfrags=fplane->nhfrags;
+ stride=iplane->stride;
+ while(fragi<vfragi_end){
+ ptrdiff_t hfragi_end;
+ unsigned char *hpix;
+ hpix=vpix;
+ for(hfragi_end=fragi+nhfrags;fragi<hfragi_end;fragi++){
+ frag_buf_offs[fragi]=hpix-ref_frame_data;
+ hpix+=8;
+ }
+ vpix+=stride<<3;
+ }
+ }
+ /*Initialize the reference frame pointers and indices.*/
+ _state->ref_frame_idx[OC_FRAME_GOLD]=
+ _state->ref_frame_idx[OC_FRAME_PREV]=
+ _state->ref_frame_idx[OC_FRAME_GOLD_ORIG]=
+ _state->ref_frame_idx[OC_FRAME_PREV_ORIG]=
+ _state->ref_frame_idx[OC_FRAME_SELF]=
+ _state->ref_frame_idx[OC_FRAME_IO]=-1;
+ _state->ref_frame_data[OC_FRAME_GOLD]=
+ _state->ref_frame_data[OC_FRAME_PREV]=
+ _state->ref_frame_data[OC_FRAME_GOLD_ORIG]=
+ _state->ref_frame_data[OC_FRAME_PREV_ORIG]=
+ _state->ref_frame_data[OC_FRAME_SELF]=
+ _state->ref_frame_data[OC_FRAME_IO]=NULL;
+ return 0;
+}
+
+static void oc_state_ref_bufs_clear(oc_theora_state *_state){
+ _ogg_free(_state->frag_buf_offs);
+ oc_aligned_free(_state->ref_frame_handle);
+}
+
+
+void oc_state_accel_init_c(oc_theora_state *_state){
+ _state->cpu_flags=0;
+#if defined(OC_STATE_USE_VTABLE)
+ _state->opt_vtable.frag_copy=oc_frag_copy_c;
+ _state->opt_vtable.frag_copy_list=oc_frag_copy_list_c;
+ _state->opt_vtable.frag_recon_intra=oc_frag_recon_intra_c;
+ _state->opt_vtable.frag_recon_inter=oc_frag_recon_inter_c;
+ _state->opt_vtable.frag_recon_inter2=oc_frag_recon_inter2_c;
+ _state->opt_vtable.idct8x8=oc_idct8x8_c;
+ _state->opt_vtable.state_frag_recon=oc_state_frag_recon_c;
+ _state->opt_vtable.loop_filter_init=oc_loop_filter_init_c;
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ oc_state_loop_filter_frag_rows_c;
+ _state->opt_vtable.restore_fpu=oc_restore_fpu_c;
+#endif
+ _state->opt_data.dct_fzig_zag=OC_FZIG_ZAG;
+}
+
+
+int oc_state_init(oc_theora_state *_state,const th_info *_info,int _nrefs){
+ int ret;
+ /*First validate the parameters.*/
+ if(_info==NULL)return TH_EFAULT;
+ /*The width and height of the encoded frame must be multiples of 16.
+ They must also, when divided by 16, fit into a 16-bit unsigned integer.
+ The displayable frame offset coordinates must fit into an 8-bit unsigned
+ integer.
+ Note that the offset Y in the API is specified on the opposite side from
+ how it is specified in the bitstream, because the Y axis is flipped in
+ the bitstream.
+ The displayable frame must fit inside the encoded frame.
+ The color space must be one known by the encoder.*/
+ if((_info->frame_width&0xF)||(_info->frame_height&0xF)||
+ _info->frame_width<=0||_info->frame_width>=0x100000||
+ _info->frame_height<=0||_info->frame_height>=0x100000||
+ _info->pic_x+_info->pic_width>_info->frame_width||
+ _info->pic_y+_info->pic_height>_info->frame_height||
+ _info->pic_x>255||_info->frame_height-_info->pic_height-_info->pic_y>255||
+ /*Note: the following <0 comparisons may generate spurious warnings on
+ platforms where enums are unsigned.
+ We could cast them to unsigned and just use the following >= comparison,
+ but there are a number of compilers which will mis-optimize this.
+ It's better to live with the spurious warnings.*/
+ _info->colorspace<0||_info->colorspace>=TH_CS_NSPACES||
+ _info->pixel_fmt<0||_info->pixel_fmt>=TH_PF_NFORMATS){
+ return TH_EINVAL;
+ }
+ memset(_state,0,sizeof(*_state));
+ memcpy(&_state->info,_info,sizeof(*_info));
+ /*Invert the sense of pic_y to match Theora's right-handed coordinate
+ system.*/
+ _state->info.pic_y=_info->frame_height-_info->pic_height-_info->pic_y;
+ _state->frame_type=OC_UNKWN_FRAME;
+ oc_state_accel_init(_state);
+ ret=oc_state_frarray_init(_state);
+ if(ret>=0)ret=oc_state_ref_bufs_init(_state,_nrefs);
+ if(ret<0){
+ oc_state_frarray_clear(_state);
+ return ret;
+ }
+ /*If the keyframe_granule_shift is out of range, use the maximum allowable
+ value.*/
+ if(_info->keyframe_granule_shift<0||_info->keyframe_granule_shift>31){
+ _state->info.keyframe_granule_shift=31;
+ }
+ _state->keyframe_num=0;
+ _state->curframe_num=-1;
+ /*3.2.0 streams mark the frame index instead of the frame count.
+ This was changed with stream version 3.2.1 to conform to other Ogg
+ codecs.
+ We add an extra bias when computing granule positions for new streams.*/
+ _state->granpos_bias=TH_VERSION_CHECK(_info,3,2,1);
+ return 0;
+}
+
+void oc_state_clear(oc_theora_state *_state){
+ oc_state_ref_bufs_clear(_state);
+ oc_state_frarray_clear(_state);
+}
+
+
+/*Duplicates the pixels on the border of the image plane out into the
+ surrounding padding for use by unrestricted motion vectors.
+ This function only adds the left and right borders, and only for the fragment
+ rows specified.
+ _refi: The index of the reference buffer to pad.
+ _pli: The color plane.
+ _y0: The Y coordinate of the first row to pad.
+ _yend: The Y coordinate of the row to stop padding at.*/
+void oc_state_borders_fill_rows(oc_theora_state *_state,int _refi,int _pli,
+ int _y0,int _yend){
+ th_img_plane *iplane;
+ unsigned char *apix;
+ unsigned char *bpix;
+ unsigned char *epix;
+ int stride;
+ int hpadding;
+ hpadding=OC_UMV_PADDING>>(_pli!=0&&!(_state->info.pixel_fmt&1));
+ iplane=_state->ref_frame_bufs[_refi]+_pli;
+ stride=iplane->stride;
+ apix=iplane->data+_y0*(ptrdiff_t)stride;
+ bpix=apix+iplane->width-1;
+ epix=iplane->data+_yend*(ptrdiff_t)stride;
+ /*Note the use of != instead of <, which allows the stride to be negative.*/
+ while(apix!=epix){
+ memset(apix-hpadding,apix[0],hpadding);
+ memset(bpix+1,bpix[0],hpadding);
+ apix+=stride;
+ bpix+=stride;
+ }
+}
+
+/*Duplicates the pixels on the border of the image plane out into the
+ surrounding padding for use by unrestricted motion vectors.
+ This function only adds the top and bottom borders, and must be called after
+ the left and right borders are added.
+ _refi: The index of the reference buffer to pad.
+ _pli: The color plane.*/
+void oc_state_borders_fill_caps(oc_theora_state *_state,int _refi,int _pli){
+ th_img_plane *iplane;
+ unsigned char *apix;
+ unsigned char *bpix;
+ unsigned char *epix;
+ int stride;
+ int hpadding;
+ int vpadding;
+ int fullw;
+ hpadding=OC_UMV_PADDING>>(_pli!=0&&!(_state->info.pixel_fmt&1));
+ vpadding=OC_UMV_PADDING>>(_pli!=0&&!(_state->info.pixel_fmt&2));
+ iplane=_state->ref_frame_bufs[_refi]+_pli;
+ stride=iplane->stride;
+ fullw=iplane->width+(hpadding<<1);
+ apix=iplane->data-hpadding;
+ bpix=iplane->data+(iplane->height-1)*(ptrdiff_t)stride-hpadding;
+ epix=apix-stride*(ptrdiff_t)vpadding;
+ while(apix!=epix){
+ memcpy(apix-stride,apix,fullw);
+ memcpy(bpix+stride,bpix,fullw);
+ apix-=stride;
+ bpix+=stride;
+ }
+}
+
+/*Duplicates the pixels on the border of the given reference image out into
+ the surrounding padding for use by unrestricted motion vectors.
+ _state: The context containing the reference buffers.
+ _refi: The index of the reference buffer to pad.*/
+void oc_state_borders_fill(oc_theora_state *_state,int _refi){
+ int pli;
+ for(pli=0;pli<3;pli++){
+ oc_state_borders_fill_rows(_state,_refi,pli,0,
+ _state->ref_frame_bufs[_refi][pli].height);
+ oc_state_borders_fill_caps(_state,_refi,pli);
+ }
+}
+
+/*Determines the offsets in an image buffer to use for motion compensation.
+ _state: The Theora state the offsets are to be computed with.
+ _offsets: Returns the offset for the buffer(s).
+ _offsets[0] is always set.
+ _offsets[1] is set if the motion vector has non-zero fractional
+ components.
+ _pli: The color plane index.
+ _mv: The motion vector.
+ Return: The number of offsets returned: 1 or 2.*/
+int oc_state_get_mv_offsets(const oc_theora_state *_state,int _offsets[2],
+ int _pli,oc_mv _mv){
+ /*Here is a brief description of how Theora handles motion vectors:
+ Motion vector components are specified to half-pixel accuracy in
+ undecimated directions of each plane, and quarter-pixel accuracy in
+ decimated directions.
+ Integer parts are extracted by dividing (not shifting) by the
+ appropriate amount, with truncation towards zero.
+ These integer values are used to calculate the first offset.
+
+ If either of the fractional parts are non-zero, then a second offset is
+ computed.
+ No third or fourth offsets are computed, even if both components have
+ non-zero fractional parts.
+ The second offset is computed by dividing (not shifting) by the
+ appropriate amount, always truncating _away_ from zero.*/
+#if 0
+ /*This version of the code doesn't use any tables, but is slower.*/
+ int ystride;
+ int xprec;
+ int yprec;
+ int xfrac;
+ int yfrac;
+ int offs;
+ int dx;
+ int dy;
+ ystride=_state->ref_ystride[_pli];
+ /*These two variables decide whether we are in half- or quarter-pixel
+ precision in each component.*/
+ xprec=1+(_pli!=0&&!(_state->info.pixel_fmt&1));
+ yprec=1+(_pli!=0&&!(_state->info.pixel_fmt&2));
+ dx=OC_MV_X(_mv);
+ dy=OC_MV_Y(_mv);
+ /*These two variables are either 0 if all the fractional bits are zero or -1
+ if any of them are non-zero.*/
+ xfrac=OC_SIGNMASK(-(dx&(xprec|1)));
+ yfrac=OC_SIGNMASK(-(dy&(yprec|1)));
+ offs=(dx>>xprec)+(dy>>yprec)*ystride;
+ if(xfrac||yfrac){
+ int xmask;
+ int ymask;
+ xmask=OC_SIGNMASK(dx);
+ ymask=OC_SIGNMASK(dy);
+ yfrac&=ystride;
+ _offsets[0]=offs-(xfrac&xmask)+(yfrac&ymask);
+ _offsets[1]=offs-(xfrac&~xmask)+(yfrac&~ymask);
+ return 2;
+ }
+ else{
+ _offsets[0]=offs;
+ return 1;
+ }
+#else
+ /*Using tables simplifies the code, and there's enough arithmetic to hide the
+ latencies of the memory references.*/
+ static const signed char OC_MVMAP[2][64]={
+ {
+ -15,-15,-14,-14,-13,-13,-12,-12,-11,-11,-10,-10, -9, -9, -8,
+ -8, -7, -7, -6, -6, -5, -5, -4, -4, -3, -3, -2, -2, -1, -1, 0,
+ 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7,
+ 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15
+ },
+ {
+ -7, -7, -7, -7, -6, -6, -6, -6, -5, -5, -5, -5, -4, -4, -4,
+ -4, -3, -3, -3, -3, -2, -2, -2, -2, -1, -1, -1, -1, 0, 0, 0,
+ 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
+ 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7
+ }
+ };
+ static const signed char OC_MVMAP2[2][64]={
+ {
+ -1, 0,-1, 0,-1, 0,-1, 0,-1, 0,-1, 0,-1, 0,-1,
+ 0,-1, 0,-1, 0,-1, 0,-1, 0,-1, 0,-1, 0,-1, 0,-1,
+ 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
+ 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1
+ },
+ {
+ -1,-1,-1, 0,-1,-1,-1, 0,-1,-1,-1, 0,-1,-1,-1,
+ 0,-1,-1,-1, 0,-1,-1,-1, 0,-1,-1,-1, 0,-1,-1,-1,
+ 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1,
+ 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1
+ }
+ };
+ int ystride;
+ int qpx;
+ int qpy;
+ int mx;
+ int my;
+ int mx2;
+ int my2;
+ int offs;
+ int dx;
+ int dy;
+ ystride=_state->ref_ystride[_pli];
+ qpy=_pli!=0&&!(_state->info.pixel_fmt&2);
+ dx=OC_MV_X(_mv);
+ dy=OC_MV_Y(_mv);
+ my=OC_MVMAP[qpy][dy+31];
+ my2=OC_MVMAP2[qpy][dy+31];
+ qpx=_pli!=0&&!(_state->info.pixel_fmt&1);
+ mx=OC_MVMAP[qpx][dx+31];
+ mx2=OC_MVMAP2[qpx][dx+31];
+ offs=my*ystride+mx;
+ if(mx2||my2){
+ _offsets[1]=offs+my2*ystride+mx2;
+ _offsets[0]=offs;
+ return 2;
+ }
+ _offsets[0]=offs;
+ return 1;
+#endif
+}
+
+void oc_state_frag_recon_c(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){
+ unsigned char *dst;
+ ptrdiff_t frag_buf_off;
+ int ystride;
+ int refi;
+ /*Apply the inverse transform.*/
+ /*Special case only having a DC component.*/
+ if(_last_zzi<2){
+ ogg_int16_t p;
+ int ci;
+ /*We round this dequant product (and not any of the others) because there's
+ no iDCT rounding.*/
+ p=(ogg_int16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5);
+ /*LOOP VECTORIZES.*/
+ for(ci=0;ci<64;ci++)_dct_coeffs[64+ci]=p;
+ }
+ else{
+ /*First, dequantize the DC coefficient.*/
+ _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant);
+ oc_idct8x8(_state,_dct_coeffs+64,_dct_coeffs,_last_zzi);
+ }
+ /*Fill in the target buffer.*/
+ frag_buf_off=_state->frag_buf_offs[_fragi];
+ refi=_state->frags[_fragi].refi;
+ ystride=_state->ref_ystride[_pli];
+ dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off;
+ if(refi==OC_FRAME_SELF)oc_frag_recon_intra(_state,dst,ystride,_dct_coeffs+64);
+ else{
+ const unsigned char *ref;
+ int mvoffsets[2];
+ ref=_state->ref_frame_data[refi]+frag_buf_off;
+ if(oc_state_get_mv_offsets(_state,mvoffsets,_pli,
+ _state->frag_mvs[_fragi])>1){
+ oc_frag_recon_inter2(_state,
+ dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride,_dct_coeffs+64);
+ }
+ else{
+ oc_frag_recon_inter(_state,dst,ref+mvoffsets[0],ystride,_dct_coeffs+64);
+ }
+ }
+}
+
+static void loop_filter_h(unsigned char *_pix,int _ystride,signed char *_bv){
+ int y;
+ _pix-=2;
+ for(y=0;y<8;y++){
+ int f;
+ f=_pix[0]-_pix[3]+3*(_pix[2]-_pix[1]);
+ /*The _bv array is used to compute the function
+ f=OC_CLAMPI(OC_MINI(-_2flimit-f,0),f,OC_MAXI(_2flimit-f,0));
+ where _2flimit=_state->loop_filter_limits[_state->qis[0]]<<1;*/
+ f=*(_bv+(f+4>>3));
+ _pix[1]=OC_CLAMP255(_pix[1]+f);
+ _pix[2]=OC_CLAMP255(_pix[2]-f);
+ _pix+=_ystride;
+ }
+}
+
+static void loop_filter_v(unsigned char *_pix,int _ystride,signed char *_bv){
+ int x;
+ _pix-=_ystride*2;
+ for(x=0;x<8;x++){
+ int f;
+ f=_pix[x]-_pix[_ystride*3+x]+3*(_pix[_ystride*2+x]-_pix[_ystride+x]);
+ /*The _bv array is used to compute the function
+ f=OC_CLAMPI(OC_MINI(-_2flimit-f,0),f,OC_MAXI(_2flimit-f,0));
+ where _2flimit=_state->loop_filter_limits[_state->qis[0]]<<1;*/
+ f=*(_bv+(f+4>>3));
+ _pix[_ystride+x]=OC_CLAMP255(_pix[_ystride+x]+f);
+ _pix[_ystride*2+x]=OC_CLAMP255(_pix[_ystride*2+x]-f);
+ }
+}
+
+/*Initialize the bounding values array used by the loop filter.
+ _bv: Storage for the array.
+ _flimit: The filter limit as defined in Section 7.10 of the spec.*/
+void oc_loop_filter_init_c(signed char _bv[256],int _flimit){
+ int i;
+ memset(_bv,0,sizeof(_bv[0])*256);
+ for(i=0;i<_flimit;i++){
+ if(127-i-_flimit>=0)_bv[127-i-_flimit]=(signed char)(i-_flimit);
+ _bv[127-i]=(signed char)(-i);
+ _bv[127+i]=(signed char)(i);
+ if(127+i+_flimit<256)_bv[127+i+_flimit]=(signed char)(_flimit-i);
+ }
+}
+
+/*Apply the loop filter to a given set of fragment rows in the given plane.
+ The filter may be run on the bottom edge, affecting pixels in the next row of
+ fragments, so this row also needs to be available.
+ _bv: The bounding values array.
+ _refi: The index of the frame buffer to filter.
+ _pli: The color plane to filter.
+ _fragy0: The Y coordinate of the first fragment row to filter.
+ _fragy_end: The Y coordinate of the fragment row to stop filtering at.*/
+void oc_state_loop_filter_frag_rows_c(const oc_theora_state *_state,
+ signed char *_bv,int _refi,int _pli,int _fragy0,int _fragy_end){
+ const oc_fragment_plane *fplane;
+ const oc_fragment *frags;
+ const ptrdiff_t *frag_buf_offs;
+ unsigned char *ref_frame_data;
+ ptrdiff_t fragi_top;
+ ptrdiff_t fragi_bot;
+ ptrdiff_t fragi0;
+ ptrdiff_t fragi0_end;
+ int ystride;
+ int nhfrags;
+ _bv+=127;
+ fplane=_state->fplanes+_pli;
+ nhfrags=fplane->nhfrags;
+ fragi_top=fplane->froffset;
+ fragi_bot=fragi_top+fplane->nfrags;
+ fragi0=fragi_top+_fragy0*(ptrdiff_t)nhfrags;
+ fragi0_end=fragi_top+_fragy_end*(ptrdiff_t)nhfrags;
+ ystride=_state->ref_ystride[_pli];
+ frags=_state->frags;
+ frag_buf_offs=_state->frag_buf_offs;
+ ref_frame_data=_state->ref_frame_data[_refi];
+ /*The following loops are constructed somewhat non-intuitively on purpose.
+ The main idea is: if a block boundary has at least one coded fragment on
+ it, the filter is applied to it.
+ However, the order that the filters are applied in matters, and VP3 chose
+ the somewhat strange ordering used below.*/
+ while(fragi0<fragi0_end){
+ ptrdiff_t fragi;
+ ptrdiff_t fragi_end;
+ fragi=fragi0;
+ fragi_end=fragi+nhfrags;
+ while(fragi<fragi_end){
+ if(frags[fragi].coded){
+ unsigned char *ref;
+ ref=ref_frame_data+frag_buf_offs[fragi];
+ if(fragi>fragi0)loop_filter_h(ref,ystride,_bv);
+ if(fragi0>fragi_top)loop_filter_v(ref,ystride,_bv);
+ if(fragi+1<fragi_end&&!frags[fragi+1].coded){
+ loop_filter_h(ref+8,ystride,_bv);
+ }
+ if(fragi+nhfrags<fragi_bot&&!frags[fragi+nhfrags].coded){
+ loop_filter_v(ref+(ystride<<3),ystride,_bv);
+ }
+ }
+ fragi++;
+ }
+ fragi0+=nhfrags;
+ }
+}
+
+#if defined(OC_DUMP_IMAGES)
+int oc_state_dump_frame(const oc_theora_state *_state,int _frame,
+ const char *_suf){
+ /*Dump a PNG of the reconstructed image.*/
+ png_structp png;
+ png_infop info;
+ png_bytep *image;
+ FILE *fp;
+ char fname[16];
+ unsigned char *y_row;
+ unsigned char *u_row;
+ unsigned char *v_row;
+ unsigned char *y;
+ unsigned char *u;
+ unsigned char *v;
+ ogg_int64_t iframe;
+ ogg_int64_t pframe;
+ int y_stride;
+ int u_stride;
+ int v_stride;
+ int framei;
+ int width;
+ int height;
+ int imgi;
+ int imgj;
+ width=_state->info.frame_width;
+ height=_state->info.frame_height;
+ iframe=_state->granpos>>_state->info.keyframe_granule_shift;
+ pframe=_state->granpos-(iframe<<_state->info.keyframe_granule_shift);
+ sprintf(fname,"%08i%s.png",(int)(iframe+pframe),_suf);
+ fp=fopen(fname,"wb");
+ if(fp==NULL)return TH_EFAULT;
+ image=(png_bytep *)oc_malloc_2d(height,6*width,sizeof(**image));
+ if(image==NULL){
+ fclose(fp);
+ return TH_EFAULT;
+ }
+ png=png_create_write_struct(PNG_LIBPNG_VER_STRING,NULL,NULL,NULL);
+ if(png==NULL){
+ oc_free_2d(image);
+ fclose(fp);
+ return TH_EFAULT;
+ }
+ info=png_create_info_struct(png);
+ if(info==NULL){
+ png_destroy_write_struct(&png,NULL);
+ oc_free_2d(image);
+ fclose(fp);
+ return TH_EFAULT;
+ }
+ if(setjmp(png_jmpbuf(png))){
+ png_destroy_write_struct(&png,&info);
+ oc_free_2d(image);
+ fclose(fp);
+ return TH_EFAULT;
+ }
+ framei=_state->ref_frame_idx[_frame];
+ y_row=_state->ref_frame_bufs[framei][0].data;
+ u_row=_state->ref_frame_bufs[framei][1].data;
+ v_row=_state->ref_frame_bufs[framei][2].data;
+ y_stride=_state->ref_frame_bufs[framei][0].stride;
+ u_stride=_state->ref_frame_bufs[framei][1].stride;
+ v_stride=_state->ref_frame_bufs[framei][2].stride;
+ /*Chroma up-sampling is just done with a box filter.
+ This is very likely what will actually be used in practice on a real
+ display, and also removes one more layer to search in for the source of
+ artifacts.
+ As an added bonus, it's dead simple.*/
+ for(imgi=height;imgi-->0;){
+ int dc;
+ y=y_row;
+ u=u_row;
+ v=v_row;
+ for(imgj=0;imgj<6*width;){
+ float yval;
+ float uval;
+ float vval;
+ unsigned rval;
+ unsigned gval;
+ unsigned bval;
+ /*This is intentionally slow and very accurate.*/
+ yval=(*y-16)*(1.0F/219);
+ uval=(*u-128)*(2*(1-0.114F)/224);
+ vval=(*v-128)*(2*(1-0.299F)/224);
+ rval=OC_CLAMPI(0,(int)(65535*(yval+vval)+0.5F),65535);
+ gval=OC_CLAMPI(0,(int)(65535*(
+ yval-uval*(0.114F/0.587F)-vval*(0.299F/0.587F))+0.5F),65535);
+ bval=OC_CLAMPI(0,(int)(65535*(yval+uval)+0.5F),65535);
+ image[imgi][imgj++]=(unsigned char)(rval>>8);
+ image[imgi][imgj++]=(unsigned char)(rval&0xFF);
+ image[imgi][imgj++]=(unsigned char)(gval>>8);
+ image[imgi][imgj++]=(unsigned char)(gval&0xFF);
+ image[imgi][imgj++]=(unsigned char)(bval>>8);
+ image[imgi][imgj++]=(unsigned char)(bval&0xFF);
+ dc=(y-y_row&1)|(_state->info.pixel_fmt&1);
+ y++;
+ u+=dc;
+ v+=dc;
+ }
+ dc=-((height-1-imgi&1)|_state->info.pixel_fmt>>1);
+ y_row+=y_stride;
+ u_row+=dc&u_stride;
+ v_row+=dc&v_stride;
+ }
+ png_init_io(png,fp);
+ png_set_compression_level(png,Z_BEST_COMPRESSION);
+ png_set_IHDR(png,info,width,height,16,PNG_COLOR_TYPE_RGB,
+ PNG_INTERLACE_NONE,PNG_COMPRESSION_TYPE_DEFAULT,PNG_FILTER_TYPE_DEFAULT);
+ switch(_state->info.colorspace){
+ case TH_CS_ITU_REC_470M:{
+ png_set_gAMA(png,info,2.2);
+ png_set_cHRM_fixed(png,info,31006,31616,
+ 67000,32000,21000,71000,14000,8000);
+ }break;
+ case TH_CS_ITU_REC_470BG:{
+ png_set_gAMA(png,info,2.67);
+ png_set_cHRM_fixed(png,info,31271,32902,
+ 64000,33000,29000,60000,15000,6000);
+ }break;
+ default:break;
+ }
+ png_set_pHYs(png,info,_state->info.aspect_numerator,
+ _state->info.aspect_denominator,0);
+ png_set_rows(png,info,image);
+ png_write_png(png,info,PNG_TRANSFORM_IDENTITY,NULL);
+ png_write_end(png,info);
+ png_destroy_write_struct(&png,&info);
+ oc_free_2d(image);
+ fclose(fp);
+ return 0;
+}
+#endif
+
+
+
+ogg_int64_t th_granule_frame(void *_encdec,ogg_int64_t _granpos){
+ oc_theora_state *state;
+ state=(oc_theora_state *)_encdec;
+ if(_granpos>=0){
+ ogg_int64_t iframe;
+ ogg_int64_t pframe;
+ iframe=_granpos>>state->info.keyframe_granule_shift;
+ pframe=_granpos-(iframe<<state->info.keyframe_granule_shift);
+ /*3.2.0 streams store the frame index in the granule position.
+ 3.2.1 and later store the frame count.
+ We return the index, so adjust the value if we have a 3.2.1 or later
+ stream.*/
+ return iframe+pframe-TH_VERSION_CHECK(&state->info,3,2,1);
+ }
+ return -1;
+}
+
+double th_granule_time(void *_encdec,ogg_int64_t _granpos){
+ oc_theora_state *state;
+ state=(oc_theora_state *)_encdec;
+ if(_granpos>=0){
+ return (th_granule_frame(_encdec, _granpos)+1)*(
+ (double)state->info.fps_denominator/state->info.fps_numerator);
+ }
+ return -1;
+}
diff --git a/media/libtheora/lib/state.h b/media/libtheora/lib/state.h
new file mode 100644
index 000000000..f176a53ce
--- /dev/null
+++ b/media/libtheora/lib/state.h
@@ -0,0 +1,552 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: internal.h 17337 2010-07-19 16:08:54Z tterribe $
+
+ ********************************************************************/
+#if !defined(_state_H)
+# define _state_H (1)
+# include "internal.h"
+# include "huffman.h"
+# include "quant.h"
+
+
+
+/*A single quadrant of the map from a super block to fragment numbers.*/
+typedef ptrdiff_t oc_sb_map_quad[4];
+/*A map from a super block to fragment numbers.*/
+typedef oc_sb_map_quad oc_sb_map[4];
+/*A single plane of the map from a macro block to fragment numbers.*/
+typedef ptrdiff_t oc_mb_map_plane[4];
+/*A map from a macro block to fragment numbers.*/
+typedef oc_mb_map_plane oc_mb_map[3];
+/*A motion vector.*/
+typedef ogg_int16_t oc_mv;
+
+typedef struct oc_sb_flags oc_sb_flags;
+typedef struct oc_border_info oc_border_info;
+typedef struct oc_fragment oc_fragment;
+typedef struct oc_fragment_plane oc_fragment_plane;
+typedef struct oc_base_opt_vtable oc_base_opt_vtable;
+typedef struct oc_base_opt_data oc_base_opt_data;
+typedef struct oc_state_dispatch_vtable oc_state_dispatch_vtable;
+typedef struct oc_theora_state oc_theora_state;
+
+
+
+/*Shared accelerated functions.*/
+# if defined(OC_X86_ASM)
+# if defined(_MSC_VER)
+# include "x86_vc/x86int.h"
+# else
+# include "x86/x86int.h"
+# endif
+# endif
+# if defined(OC_ARM_ASM)
+# include "arm/armint.h"
+# endif
+# if defined(OC_C64X_ASM)
+# include "c64x/c64xint.h"
+# endif
+
+# if !defined(oc_state_accel_init)
+# define oc_state_accel_init oc_state_accel_init_c
+# endif
+# if defined(OC_STATE_USE_VTABLE)
+# if !defined(oc_frag_copy)
+# define oc_frag_copy(_state,_dst,_src,_ystride) \
+ ((*(_state)->opt_vtable.frag_copy)(_dst,_src,_ystride))
+# endif
+# if !defined(oc_frag_copy_list)
+# define oc_frag_copy_list(_state,_dst_frame,_src_frame,_ystride, \
+ _fragis,_nfragis,_frag_buf_offs) \
+ ((*(_state)->opt_vtable.frag_copy_list)(_dst_frame,_src_frame,_ystride, \
+ _fragis,_nfragis,_frag_buf_offs))
+# endif
+# if !defined(oc_frag_recon_intra)
+# define oc_frag_recon_intra(_state,_dst,_dst_ystride,_residue) \
+ ((*(_state)->opt_vtable.frag_recon_intra)(_dst,_dst_ystride,_residue))
+# endif
+# if !defined(oc_frag_recon_inter)
+# define oc_frag_recon_inter(_state,_dst,_src,_ystride,_residue) \
+ ((*(_state)->opt_vtable.frag_recon_inter)(_dst,_src,_ystride,_residue))
+# endif
+# if !defined(oc_frag_recon_inter2)
+# define oc_frag_recon_inter2(_state,_dst,_src1,_src2,_ystride,_residue) \
+ ((*(_state)->opt_vtable.frag_recon_inter2)(_dst, \
+ _src1,_src2,_ystride,_residue))
+# endif
+# if !defined(oc_idct8x8)
+# define oc_idct8x8(_state,_y,_x,_last_zzi) \
+ ((*(_state)->opt_vtable.idct8x8)(_y,_x,_last_zzi))
+# endif
+# if !defined(oc_state_frag_recon)
+# define oc_state_frag_recon(_state,_fragi, \
+ _pli,_dct_coeffs,_last_zzi,_dc_quant) \
+ ((*(_state)->opt_vtable.state_frag_recon)(_state,_fragi, \
+ _pli,_dct_coeffs,_last_zzi,_dc_quant))
+# endif
+# if !defined(oc_loop_filter_init)
+# define oc_loop_filter_init(_state,_bv,_flimit) \
+ ((*(_state)->opt_vtable.loop_filter_init)(_bv,_flimit))
+# endif
+# if !defined(oc_state_loop_filter_frag_rows)
+# define oc_state_loop_filter_frag_rows(_state, \
+ _bv,_refi,_pli,_fragy0,_fragy_end) \
+ ((*(_state)->opt_vtable.state_loop_filter_frag_rows)(_state, \
+ _bv,_refi,_pli,_fragy0,_fragy_end))
+# endif
+# if !defined(oc_restore_fpu)
+# define oc_restore_fpu(_state) \
+ ((*(_state)->opt_vtable.restore_fpu)())
+# endif
+# else
+# if !defined(oc_frag_copy)
+# define oc_frag_copy(_state,_dst,_src,_ystride) \
+ oc_frag_copy_c(_dst,_src,_ystride)
+# endif
+# if !defined(oc_frag_copy_list)
+# define oc_frag_copy_list(_state,_dst_frame,_src_frame,_ystride, \
+ _fragis,_nfragis,_frag_buf_offs) \
+ oc_frag_copy_list_c(_dst_frame,_src_frame,_ystride, \
+ _fragis,_nfragis,_frag_buf_offs)
+# endif
+# if !defined(oc_frag_recon_intra)
+# define oc_frag_recon_intra(_state,_dst,_dst_ystride,_residue) \
+ oc_frag_recon_intra_c(_dst,_dst_ystride,_residue)
+# endif
+# if !defined(oc_frag_recon_inter)
+# define oc_frag_recon_inter(_state,_dst,_src,_ystride,_residue) \
+ oc_frag_recon_inter_c(_dst,_src,_ystride,_residue)
+# endif
+# if !defined(oc_frag_recon_inter2)
+# define oc_frag_recon_inter2(_state,_dst,_src1,_src2,_ystride,_residue) \
+ oc_frag_recon_inter2_c(_dst,_src1,_src2,_ystride,_residue)
+# endif
+# if !defined(oc_idct8x8)
+# define oc_idct8x8(_state,_y,_x,_last_zzi) oc_idct8x8_c(_y,_x,_last_zzi)
+# endif
+# if !defined(oc_state_frag_recon)
+# define oc_state_frag_recon oc_state_frag_recon_c
+# endif
+# if !defined(oc_loop_filter_init)
+# define oc_loop_filter_init(_state,_bv,_flimit) \
+ oc_loop_filter_init_c(_bv,_flimit)
+# endif
+# if !defined(oc_state_loop_filter_frag_rows)
+# define oc_state_loop_filter_frag_rows oc_state_loop_filter_frag_rows_c
+# endif
+# if !defined(oc_restore_fpu)
+# define oc_restore_fpu(_state) do{}while(0)
+# endif
+# endif
+
+
+
+/*A keyframe.*/
+# define OC_INTRA_FRAME (0)
+/*A predicted frame.*/
+# define OC_INTER_FRAME (1)
+/*A frame of unknown type (frame type decision has not yet been made).*/
+# define OC_UNKWN_FRAME (-1)
+
+/*The amount of padding to add to the reconstructed frame buffers on all
+ sides.
+ This is used to allow unrestricted motion vectors without special casing.
+ This must be a multiple of 2.*/
+# define OC_UMV_PADDING (16)
+
+/*Frame classification indices.*/
+/*The previous golden frame.*/
+# define OC_FRAME_GOLD (0)
+/*The previous frame.*/
+# define OC_FRAME_PREV (1)
+/*The current frame.*/
+# define OC_FRAME_SELF (2)
+/*Used to mark uncoded fragments (for DC prediction).*/
+# define OC_FRAME_NONE (3)
+
+/*The input or output buffer.*/
+# define OC_FRAME_IO (3)
+/*Uncompressed prev golden frame.*/
+# define OC_FRAME_GOLD_ORIG (4)
+/*Uncompressed previous frame. */
+# define OC_FRAME_PREV_ORIG (5)
+
+/*Macroblock modes.*/
+/*Macro block is invalid: It is never coded.*/
+# define OC_MODE_INVALID (-1)
+/*Encoded difference from the same macro block in the previous frame.*/
+# define OC_MODE_INTER_NOMV (0)
+/*Encoded with no motion compensated prediction.*/
+# define OC_MODE_INTRA (1)
+/*Encoded difference from the previous frame offset by the given motion
+ vector.*/
+# define OC_MODE_INTER_MV (2)
+/*Encoded difference from the previous frame offset by the last coded motion
+ vector.*/
+# define OC_MODE_INTER_MV_LAST (3)
+/*Encoded difference from the previous frame offset by the second to last
+ coded motion vector.*/
+# define OC_MODE_INTER_MV_LAST2 (4)
+/*Encoded difference from the same macro block in the previous golden
+ frame.*/
+# define OC_MODE_GOLDEN_NOMV (5)
+/*Encoded difference from the previous golden frame offset by the given motion
+ vector.*/
+# define OC_MODE_GOLDEN_MV (6)
+/*Encoded difference from the previous frame offset by the individual motion
+ vectors given for each block.*/
+# define OC_MODE_INTER_MV_FOUR (7)
+/*The number of (coded) modes.*/
+# define OC_NMODES (8)
+
+/*Determines the reference frame used for a given MB mode.*/
+# define OC_FRAME_FOR_MODE(_x) \
+ OC_UNIBBLE_TABLE32(OC_FRAME_PREV,OC_FRAME_SELF,OC_FRAME_PREV,OC_FRAME_PREV, \
+ OC_FRAME_PREV,OC_FRAME_GOLD,OC_FRAME_GOLD,OC_FRAME_PREV,(_x))
+
+/*Constants for the packet state machine common between encoder and decoder.*/
+
+/*Next packet to emit/read: Codec info header.*/
+# define OC_PACKET_INFO_HDR (-3)
+/*Next packet to emit/read: Comment header.*/
+# define OC_PACKET_COMMENT_HDR (-2)
+/*Next packet to emit/read: Codec setup header.*/
+# define OC_PACKET_SETUP_HDR (-1)
+/*No more packets to emit/read.*/
+# define OC_PACKET_DONE (INT_MAX)
+
+
+
+#define OC_MV(_x,_y) ((oc_mv)((_x)&0xFF|(_y)<<8))
+#define OC_MV_X(_mv) ((signed char)(_mv))
+#define OC_MV_Y(_mv) ((_mv)>>8)
+#define OC_MV_ADD(_mv1,_mv2) \
+ OC_MV(OC_MV_X(_mv1)+OC_MV_X(_mv2), \
+ OC_MV_Y(_mv1)+OC_MV_Y(_mv2))
+#define OC_MV_SUB(_mv1,_mv2) \
+ OC_MV(OC_MV_X(_mv1)-OC_MV_X(_mv2), \
+ OC_MV_Y(_mv1)-OC_MV_Y(_mv2))
+
+
+
+/*Super blocks are 32x32 segments of pixels in a single color plane indexed
+ in image order.
+ Internally, super blocks are broken up into four quadrants, each of which
+ contains a 2x2 pattern of blocks, each of which is an 8x8 block of pixels.
+ Quadrants, and the blocks within them, are indexed in a special order called
+ a "Hilbert curve" within the super block.
+
+ In order to differentiate between the Hilbert-curve indexing strategy and
+ the regular image order indexing strategy, blocks indexed in image order
+ are called "fragments".
+ Fragments are indexed in image order, left to right, then bottom to top,
+ from Y' plane to Cb plane to Cr plane.
+
+ The co-located fragments in all image planes corresponding to the location
+ of a single quadrant of a luma plane super block form a macro block.
+ Thus there is only a single set of macro blocks for all planes, each of which
+ contains between 6 and 12 fragments, depending on the pixel format.
+ Therefore macro block information is kept in a separate set of arrays from
+ super blocks to avoid unused space in the other planes.
+ The lists are indexed in super block order.
+ That is, the macro block corresponding to the macro block mbi in (luma plane)
+ super block sbi is at index (sbi<<2|mbi).
+ Thus the number of macro blocks in each dimension is always twice the number
+ of super blocks, even when only an odd number fall inside the coded frame.
+ These "extra" macro blocks are just an artifact of our internal data layout,
+ and not part of the coded stream; they are flagged with a negative MB mode.*/
+
+
+
+/*Super block information.*/
+struct oc_sb_flags{
+ unsigned char coded_fully:1;
+ unsigned char coded_partially:1;
+ unsigned char quad_valid:4;
+};
+
+
+
+/*Information about a fragment which intersects the border of the displayable
+ region.
+ This marks which pixels belong to the displayable region.*/
+struct oc_border_info{
+ /*A bit mask marking which pixels are in the displayable region.
+ Pixel (x,y) corresponds to bit (y<<3|x).*/
+ ogg_int64_t mask;
+ /*The number of pixels in the displayable region.
+ This is always positive, and always less than 64.*/
+ int npixels;
+};
+
+
+
+/*Fragment information.*/
+struct oc_fragment{
+ /*A flag indicating whether or not this fragment is coded.*/
+ unsigned coded:1;
+ /*A flag indicating that this entire fragment lies outside the displayable
+ region of the frame.
+ Note the contrast with an invalid macro block, which is outside the coded
+ frame, not just the displayable one.
+ There are no fragments outside the coded frame by construction.*/
+ unsigned invalid:1;
+ /*The index of the quality index used for this fragment's AC coefficients.*/
+ unsigned qii:4;
+ /*The index of the reference frame this fragment is predicted from.*/
+ unsigned refi:2;
+ /*The mode of the macroblock this fragment belongs to.*/
+ unsigned mb_mode:3;
+ /*The index of the associated border information for fragments which lie
+ partially outside the displayable region.
+ For fragments completely inside or outside this region, this is -1.
+ Note that the C standard requires an explicit signed keyword for bitfield
+ types, since some compilers may treat them as unsigned without it.*/
+ signed int borderi:5;
+ /*The prediction-corrected DC component.
+ Note that the C standard requires an explicit signed keyword for bitfield
+ types, since some compilers may treat them as unsigned without it.*/
+ signed int dc:16;
+};
+
+
+
+/*A description of each fragment plane.*/
+struct oc_fragment_plane{
+ /*The number of fragments in the horizontal direction.*/
+ int nhfrags;
+ /*The number of fragments in the vertical direction.*/
+ int nvfrags;
+ /*The offset of the first fragment in the plane.*/
+ ptrdiff_t froffset;
+ /*The total number of fragments in the plane.*/
+ ptrdiff_t nfrags;
+ /*The number of super blocks in the horizontal direction.*/
+ unsigned nhsbs;
+ /*The number of super blocks in the vertical direction.*/
+ unsigned nvsbs;
+ /*The offset of the first super block in the plane.*/
+ unsigned sboffset;
+ /*The total number of super blocks in the plane.*/
+ unsigned nsbs;
+};
+
+
+typedef void (*oc_state_loop_filter_frag_rows_func)(
+ const oc_theora_state *_state,signed char _bv[256],int _refi,int _pli,
+ int _fragy0,int _fragy_end);
+
+/*The shared (encoder and decoder) functions that have accelerated variants.*/
+struct oc_base_opt_vtable{
+ void (*frag_copy)(unsigned char *_dst,
+ const unsigned char *_src,int _ystride);
+ void (*frag_copy_list)(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+ void (*frag_recon_intra)(unsigned char *_dst,int _ystride,
+ const ogg_int16_t _residue[64]);
+ void (*frag_recon_inter)(unsigned char *_dst,
+ const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]);
+ void (*frag_recon_inter2)(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]);
+ void (*idct8x8)(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+ void (*state_frag_recon)(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+ void (*loop_filter_init)(signed char _bv[256],int _flimit);
+ oc_state_loop_filter_frag_rows_func state_loop_filter_frag_rows;
+ void (*restore_fpu)(void);
+};
+
+/*The shared (encoder and decoder) tables that vary according to which variants
+ of the above functions are used.*/
+struct oc_base_opt_data{
+ const unsigned char *dct_fzig_zag;
+};
+
+
+/*State information common to both the encoder and decoder.*/
+struct oc_theora_state{
+ /*The stream information.*/
+ th_info info;
+# if defined(OC_STATE_USE_VTABLE)
+ /*Table for shared accelerated functions.*/
+ oc_base_opt_vtable opt_vtable;
+# endif
+ /*Table for shared data used by accelerated functions.*/
+ oc_base_opt_data opt_data;
+ /*CPU flags to detect the presence of extended instruction sets.*/
+ ogg_uint32_t cpu_flags;
+ /*The fragment plane descriptions.*/
+ oc_fragment_plane fplanes[3];
+ /*The list of fragments, indexed in image order.*/
+ oc_fragment *frags;
+ /*The the offset into the reference frame buffer to the upper-left pixel of
+ each fragment.*/
+ ptrdiff_t *frag_buf_offs;
+ /*The motion vector for each fragment.*/
+ oc_mv *frag_mvs;
+ /*The total number of fragments in a single frame.*/
+ ptrdiff_t nfrags;
+ /*The list of super block maps, indexed in image order.*/
+ oc_sb_map *sb_maps;
+ /*The list of super block flags, indexed in image order.*/
+ oc_sb_flags *sb_flags;
+ /*The total number of super blocks in a single frame.*/
+ unsigned nsbs;
+ /*The fragments from each color plane that belong to each macro block.
+ Fragments are stored in image order (left to right then top to bottom).
+ When chroma components are decimated, the extra fragments have an index of
+ -1.*/
+ oc_mb_map *mb_maps;
+ /*The list of macro block modes.
+ A negative number indicates the macro block lies entirely outside the
+ coded frame.*/
+ signed char *mb_modes;
+ /*The number of macro blocks in the X direction.*/
+ unsigned nhmbs;
+ /*The number of macro blocks in the Y direction.*/
+ unsigned nvmbs;
+ /*The total number of macro blocks.*/
+ size_t nmbs;
+ /*The list of coded fragments, in coded order.
+ Uncoded fragments are stored in reverse order from the end of the list.*/
+ ptrdiff_t *coded_fragis;
+ /*The number of coded fragments in each plane.*/
+ ptrdiff_t ncoded_fragis[3];
+ /*The total number of coded fragments.*/
+ ptrdiff_t ntotal_coded_fragis;
+ /*The actual buffers used for the reference frames.*/
+ th_ycbcr_buffer ref_frame_bufs[6];
+ /*The index of the buffers being used for each OC_FRAME_* reference frame.*/
+ int ref_frame_idx[6];
+ /*The storage for the reference frame buffers.
+ This is just ref_frame_bufs[ref_frame_idx[i]][0].data, but is cached here
+ for faster look-up.*/
+ unsigned char *ref_frame_data[6];
+ /*The handle used to allocate the reference frame buffers.*/
+ unsigned char *ref_frame_handle;
+ /*The strides for each plane in the reference frames.*/
+ int ref_ystride[3];
+ /*The number of unique border patterns.*/
+ int nborders;
+ /*The unique border patterns for all border fragments.
+ The borderi field of fragments which straddle the border indexes this
+ list.*/
+ oc_border_info borders[16];
+ /*The frame number of the last keyframe.*/
+ ogg_int64_t keyframe_num;
+ /*The frame number of the current frame.*/
+ ogg_int64_t curframe_num;
+ /*The granpos of the current frame.*/
+ ogg_int64_t granpos;
+ /*The type of the current frame.*/
+ signed char frame_type;
+ /*The bias to add to the frame count when computing granule positions.*/
+ unsigned char granpos_bias;
+ /*The number of quality indices used in the current frame.*/
+ unsigned char nqis;
+ /*The quality indices of the current frame.*/
+ unsigned char qis[3];
+ /*The dequantization tables, stored in zig-zag order, and indexed by
+ qi, pli, qti, and zzi.*/
+ ogg_uint16_t *dequant_tables[64][3][2];
+ OC_ALIGN16(oc_quant_table dequant_table_data[64][3][2]);
+ /*Loop filter strength parameters.*/
+ unsigned char loop_filter_limits[64];
+};
+
+
+
+/*The function type used to fill in the chroma plane motion vectors for a
+ macro block when 4 different motion vectors are specified in the luma
+ plane.
+ _cbmvs: The chroma block-level motion vectors to fill in.
+ _lmbmv: The luma macro-block level motion vector to fill in for use in
+ prediction.
+ _lbmvs: The luma block-level motion vectors.*/
+typedef void (*oc_set_chroma_mvs_func)(oc_mv _cbmvs[4],const oc_mv _lbmvs[4]);
+
+
+
+/*A table of functions used to fill in the Cb,Cr plane motion vectors for a
+ macro block when 4 different motion vectors are specified in the luma
+ plane.*/
+extern const oc_set_chroma_mvs_func OC_SET_CHROMA_MVS_TABLE[TH_PF_NFORMATS];
+
+
+
+int oc_state_init(oc_theora_state *_state,const th_info *_info,int _nrefs);
+void oc_state_clear(oc_theora_state *_state);
+void oc_state_accel_init_c(oc_theora_state *_state);
+void oc_state_borders_fill_rows(oc_theora_state *_state,int _refi,int _pli,
+ int _y0,int _yend);
+void oc_state_borders_fill_caps(oc_theora_state *_state,int _refi,int _pli);
+void oc_state_borders_fill(oc_theora_state *_state,int _refi);
+void oc_state_fill_buffer_ptrs(oc_theora_state *_state,int _buf_idx,
+ th_ycbcr_buffer _img);
+int oc_state_mbi_for_pos(oc_theora_state *_state,int _mbx,int _mby);
+int oc_state_get_mv_offsets(const oc_theora_state *_state,int _offsets[2],
+ int _pli,oc_mv _mv);
+
+void oc_loop_filter_init_c(signed char _bv[256],int _flimit);
+void oc_state_loop_filter(oc_theora_state *_state,int _frame);
+# if defined(OC_DUMP_IMAGES)
+int oc_state_dump_frame(const oc_theora_state *_state,int _frame,
+ const char *_suf);
+# endif
+
+/*Default pure-C implementations of shared accelerated functions.*/
+void oc_frag_copy_c(unsigned char *_dst,
+ const unsigned char *_src,int _src_ystride);
+void oc_frag_copy_list_c(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+void oc_frag_recon_intra_c(unsigned char *_dst,int _dst_ystride,
+ const ogg_int16_t _residue[64]);
+void oc_frag_recon_inter_c(unsigned char *_dst,
+ const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]);
+void oc_frag_recon_inter2_c(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]);
+void oc_idct8x8_c(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_state_frag_recon_c(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+void oc_state_loop_filter_frag_rows_c(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end);
+void oc_restore_fpu_c(void);
+
+/*We need a way to call a few encoder functions without introducing a link-time
+ dependency into the decoder, while still allowing the old alpha API which
+ does not distinguish between encoder and decoder objects to be used.
+ We do this by placing a function table at the start of the encoder object
+ which can dispatch into the encoder library.
+ We do a similar thing for the decoder in case we ever decide to split off a
+ common base library.*/
+typedef void (*oc_state_clear_func)(theora_state *_th);
+typedef int (*oc_state_control_func)(theora_state *th,int _req,
+ void *_buf,size_t _buf_sz);
+typedef ogg_int64_t (*oc_state_granule_frame_func)(theora_state *_th,
+ ogg_int64_t _granulepos);
+typedef double (*oc_state_granule_time_func)(theora_state *_th,
+ ogg_int64_t _granulepos);
+
+
+struct oc_state_dispatch_vtable{
+ oc_state_clear_func clear;
+ oc_state_control_func control;
+ oc_state_granule_frame_func granule_frame;
+ oc_state_granule_time_func granule_time;
+};
+
+#endif
diff --git a/media/libtheora/lib/x86/mmxfrag.c b/media/libtheora/lib/x86/mmxfrag.c
new file mode 100644
index 000000000..b7df1c1ec
--- /dev/null
+++ b/media/libtheora/lib/x86/mmxfrag.c
@@ -0,0 +1,368 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxfrag.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+/*MMX acceleration of fragment reconstruction for motion compensation.
+ Originally written by Rudolf Marek.
+ Additional optimization by Nils Pipenbrinck.
+ Note: Loops are unrolled for best performance.
+ The iteration each instruction belongs to is marked in the comments as #i.*/
+#include <stddef.h>
+#include "x86int.h"
+
+#if defined(OC_X86_ASM)
+
+/*Copies an 8x8 block of pixels from _src to _dst, assuming _ystride bytes
+ between rows.*/
+# define OC_FRAG_COPY_MMX(_dst,_src,_ystride) \
+ do{ \
+ const unsigned char *src; \
+ unsigned char *dst; \
+ ptrdiff_t ystride3; \
+ src=(_src); \
+ dst=(_dst); \
+ __asm__ __volatile__( \
+ /*src+0*ystride*/ \
+ "movq (%[src]),%%mm0\n\t" \
+ /*src+1*ystride*/ \
+ "movq (%[src],%[ystride]),%%mm1\n\t" \
+ /*ystride3=ystride*3*/ \
+ "lea (%[ystride],%[ystride],2),%[ystride3]\n\t" \
+ /*src+2*ystride*/ \
+ "movq (%[src],%[ystride],2),%%mm2\n\t" \
+ /*src+3*ystride*/ \
+ "movq (%[src],%[ystride3]),%%mm3\n\t" \
+ /*dst+0*ystride*/ \
+ "movq %%mm0,(%[dst])\n\t" \
+ /*dst+1*ystride*/ \
+ "movq %%mm1,(%[dst],%[ystride])\n\t" \
+ /*Pointer to next 4.*/ \
+ "lea (%[src],%[ystride],4),%[src]\n\t" \
+ /*dst+2*ystride*/ \
+ "movq %%mm2,(%[dst],%[ystride],2)\n\t" \
+ /*dst+3*ystride*/ \
+ "movq %%mm3,(%[dst],%[ystride3])\n\t" \
+ /*Pointer to next 4.*/ \
+ "lea (%[dst],%[ystride],4),%[dst]\n\t" \
+ /*src+0*ystride*/ \
+ "movq (%[src]),%%mm0\n\t" \
+ /*src+1*ystride*/ \
+ "movq (%[src],%[ystride]),%%mm1\n\t" \
+ /*src+2*ystride*/ \
+ "movq (%[src],%[ystride],2),%%mm2\n\t" \
+ /*src+3*ystride*/ \
+ "movq (%[src],%[ystride3]),%%mm3\n\t" \
+ /*dst+0*ystride*/ \
+ "movq %%mm0,(%[dst])\n\t" \
+ /*dst+1*ystride*/ \
+ "movq %%mm1,(%[dst],%[ystride])\n\t" \
+ /*dst+2*ystride*/ \
+ "movq %%mm2,(%[dst],%[ystride],2)\n\t" \
+ /*dst+3*ystride*/ \
+ "movq %%mm3,(%[dst],%[ystride3])\n\t" \
+ :[dst]"+r"(dst),[src]"+r"(src),[ystride3]"=&r"(ystride3) \
+ :[ystride]"r"((ptrdiff_t)(_ystride)) \
+ :"memory" \
+ ); \
+ } \
+ while(0)
+
+/*Copies an 8x8 block of pixels from _src to _dst, assuming _ystride bytes
+ between rows.*/
+void oc_frag_copy_mmx(unsigned char *_dst,
+ const unsigned char *_src,int _ystride){
+ OC_FRAG_COPY_MMX(_dst,_src,_ystride);
+}
+
+/*Copies the fragments specified by the lists of fragment indices from one
+ frame to another.
+ _dst_frame: The reference frame to copy to.
+ _src_frame: The reference frame to copy from.
+ _ystride: The row stride of the reference frames.
+ _fragis: A pointer to a list of fragment indices.
+ _nfragis: The number of fragment indices to copy.
+ _frag_buf_offs: The offsets of fragments in the reference frames.*/
+void oc_frag_copy_list_mmx(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){
+ ptrdiff_t fragii;
+ for(fragii=0;fragii<_nfragis;fragii++){
+ ptrdiff_t frag_buf_off;
+ frag_buf_off=_frag_buf_offs[_fragis[fragii]];
+ OC_FRAG_COPY_MMX(_dst_frame+frag_buf_off,
+ _src_frame+frag_buf_off,_ystride);
+ }
+}
+
+
+void oc_frag_recon_intra_mmx(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue){
+ __asm__ __volatile__(
+ /*Set mm0 to 0xFFFFFFFFFFFFFFFF.*/
+ "pcmpeqw %%mm0,%%mm0\n\t"
+ /*#0 Load low residue.*/
+ "movq 0*8(%[residue]),%%mm1\n\t"
+ /*#0 Load high residue.*/
+ "movq 1*8(%[residue]),%%mm2\n\t"
+ /*Set mm0 to 0x8000800080008000.*/
+ "psllw $15,%%mm0\n\t"
+ /*#1 Load low residue.*/
+ "movq 2*8(%[residue]),%%mm3\n\t"
+ /*#1 Load high residue.*/
+ "movq 3*8(%[residue]),%%mm4\n\t"
+ /*Set mm0 to 0x0080008000800080.*/
+ "psrlw $8,%%mm0\n\t"
+ /*#2 Load low residue.*/
+ "movq 4*8(%[residue]),%%mm5\n\t"
+ /*#2 Load high residue.*/
+ "movq 5*8(%[residue]),%%mm6\n\t"
+ /*#0 Bias low residue.*/
+ "paddsw %%mm0,%%mm1\n\t"
+ /*#0 Bias high residue.*/
+ "paddsw %%mm0,%%mm2\n\t"
+ /*#0 Pack to byte.*/
+ "packuswb %%mm2,%%mm1\n\t"
+ /*#1 Bias low residue.*/
+ "paddsw %%mm0,%%mm3\n\t"
+ /*#1 Bias high residue.*/
+ "paddsw %%mm0,%%mm4\n\t"
+ /*#1 Pack to byte.*/
+ "packuswb %%mm4,%%mm3\n\t"
+ /*#2 Bias low residue.*/
+ "paddsw %%mm0,%%mm5\n\t"
+ /*#2 Bias high residue.*/
+ "paddsw %%mm0,%%mm6\n\t"
+ /*#2 Pack to byte.*/
+ "packuswb %%mm6,%%mm5\n\t"
+ /*#0 Write row.*/
+ "movq %%mm1,(%[dst])\n\t"
+ /*#1 Write row.*/
+ "movq %%mm3,(%[dst],%[ystride])\n\t"
+ /*#2 Write row.*/
+ "movq %%mm5,(%[dst],%[ystride],2)\n\t"
+ /*#3 Load low residue.*/
+ "movq 6*8(%[residue]),%%mm1\n\t"
+ /*#3 Load high residue.*/
+ "movq 7*8(%[residue]),%%mm2\n\t"
+ /*#4 Load high residue.*/
+ "movq 8*8(%[residue]),%%mm3\n\t"
+ /*#4 Load high residue.*/
+ "movq 9*8(%[residue]),%%mm4\n\t"
+ /*#5 Load high residue.*/
+ "movq 10*8(%[residue]),%%mm5\n\t"
+ /*#5 Load high residue.*/
+ "movq 11*8(%[residue]),%%mm6\n\t"
+ /*#3 Bias low residue.*/
+ "paddsw %%mm0,%%mm1\n\t"
+ /*#3 Bias high residue.*/
+ "paddsw %%mm0,%%mm2\n\t"
+ /*#3 Pack to byte.*/
+ "packuswb %%mm2,%%mm1\n\t"
+ /*#4 Bias low residue.*/
+ "paddsw %%mm0,%%mm3\n\t"
+ /*#4 Bias high residue.*/
+ "paddsw %%mm0,%%mm4\n\t"
+ /*#4 Pack to byte.*/
+ "packuswb %%mm4,%%mm3\n\t"
+ /*#5 Bias low residue.*/
+ "paddsw %%mm0,%%mm5\n\t"
+ /*#5 Bias high residue.*/
+ "paddsw %%mm0,%%mm6\n\t"
+ /*#5 Pack to byte.*/
+ "packuswb %%mm6,%%mm5\n\t"
+ /*#3 Write row.*/
+ "movq %%mm1,(%[dst],%[ystride3])\n\t"
+ /*#4 Write row.*/
+ "movq %%mm3,(%[dst4])\n\t"
+ /*#5 Write row.*/
+ "movq %%mm5,(%[dst4],%[ystride])\n\t"
+ /*#6 Load low residue.*/
+ "movq 12*8(%[residue]),%%mm1\n\t"
+ /*#6 Load high residue.*/
+ "movq 13*8(%[residue]),%%mm2\n\t"
+ /*#7 Load low residue.*/
+ "movq 14*8(%[residue]),%%mm3\n\t"
+ /*#7 Load high residue.*/
+ "movq 15*8(%[residue]),%%mm4\n\t"
+ /*#6 Bias low residue.*/
+ "paddsw %%mm0,%%mm1\n\t"
+ /*#6 Bias high residue.*/
+ "paddsw %%mm0,%%mm2\n\t"
+ /*#6 Pack to byte.*/
+ "packuswb %%mm2,%%mm1\n\t"
+ /*#7 Bias low residue.*/
+ "paddsw %%mm0,%%mm3\n\t"
+ /*#7 Bias high residue.*/
+ "paddsw %%mm0,%%mm4\n\t"
+ /*#7 Pack to byte.*/
+ "packuswb %%mm4,%%mm3\n\t"
+ /*#6 Write row.*/
+ "movq %%mm1,(%[dst4],%[ystride],2)\n\t"
+ /*#7 Write row.*/
+ "movq %%mm3,(%[dst4],%[ystride3])\n\t"
+ :
+ :[residue]"r"(_residue),
+ [dst]"r"(_dst),
+ [dst4]"r"(_dst+(_ystride<<2)),
+ [ystride]"r"((ptrdiff_t)_ystride),
+ [ystride3]"r"((ptrdiff_t)_ystride*3)
+ :"memory"
+ );
+}
+
+void oc_frag_recon_inter_mmx(unsigned char *_dst,const unsigned char *_src,
+ int _ystride,const ogg_int16_t *_residue){
+ int i;
+ /*Zero mm0.*/
+ __asm__ __volatile__("pxor %%mm0,%%mm0\n\t"::);
+ for(i=4;i-->0;){
+ __asm__ __volatile__(
+ /*#0 Load source.*/
+ "movq (%[src]),%%mm3\n\t"
+ /*#1 Load source.*/
+ "movq (%[src],%[ystride]),%%mm7\n\t"
+ /*#0 Get copy of src.*/
+ "movq %%mm3,%%mm4\n\t"
+ /*#0 Expand high source.*/
+ "punpckhbw %%mm0,%%mm4\n\t"
+ /*#0 Expand low source.*/
+ "punpcklbw %%mm0,%%mm3\n\t"
+ /*#0 Add residue high.*/
+ "paddsw 8(%[residue]),%%mm4\n\t"
+ /*#1 Get copy of src.*/
+ "movq %%mm7,%%mm2\n\t"
+ /*#0 Add residue low.*/
+ "paddsw (%[residue]), %%mm3\n\t"
+ /*#1 Expand high source.*/
+ "punpckhbw %%mm0,%%mm2\n\t"
+ /*#0 Pack final row pixels.*/
+ "packuswb %%mm4,%%mm3\n\t"
+ /*#1 Expand low source.*/
+ "punpcklbw %%mm0,%%mm7\n\t"
+ /*#1 Add residue low.*/
+ "paddsw 16(%[residue]),%%mm7\n\t"
+ /*#1 Add residue high.*/
+ "paddsw 24(%[residue]),%%mm2\n\t"
+ /*Advance residue.*/
+ "lea 32(%[residue]),%[residue]\n\t"
+ /*#1 Pack final row pixels.*/
+ "packuswb %%mm2,%%mm7\n\t"
+ /*Advance src.*/
+ "lea (%[src],%[ystride],2),%[src]\n\t"
+ /*#0 Write row.*/
+ "movq %%mm3,(%[dst])\n\t"
+ /*#1 Write row.*/
+ "movq %%mm7,(%[dst],%[ystride])\n\t"
+ /*Advance dst.*/
+ "lea (%[dst],%[ystride],2),%[dst]\n\t"
+ :[residue]"+r"(_residue),[dst]"+r"(_dst),[src]"+r"(_src)
+ :[ystride]"r"((ptrdiff_t)_ystride)
+ :"memory"
+ );
+ }
+}
+
+void oc_frag_recon_inter2_mmx(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue){
+ int i;
+ /*Zero mm7.*/
+ __asm__ __volatile__("pxor %%mm7,%%mm7\n\t"::);
+ for(i=4;i-->0;){
+ __asm__ __volatile__(
+ /*#0 Load src1.*/
+ "movq (%[src1]),%%mm0\n\t"
+ /*#0 Load src2.*/
+ "movq (%[src2]),%%mm2\n\t"
+ /*#0 Copy src1.*/
+ "movq %%mm0,%%mm1\n\t"
+ /*#0 Copy src2.*/
+ "movq %%mm2,%%mm3\n\t"
+ /*#1 Load src1.*/
+ "movq (%[src1],%[ystride]),%%mm4\n\t"
+ /*#0 Unpack lower src1.*/
+ "punpcklbw %%mm7,%%mm0\n\t"
+ /*#1 Load src2.*/
+ "movq (%[src2],%[ystride]),%%mm5\n\t"
+ /*#0 Unpack higher src1.*/
+ "punpckhbw %%mm7,%%mm1\n\t"
+ /*#0 Unpack lower src2.*/
+ "punpcklbw %%mm7,%%mm2\n\t"
+ /*#0 Unpack higher src2.*/
+ "punpckhbw %%mm7,%%mm3\n\t"
+ /*Advance src1 ptr.*/
+ "lea (%[src1],%[ystride],2),%[src1]\n\t"
+ /*Advance src2 ptr.*/
+ "lea (%[src2],%[ystride],2),%[src2]\n\t"
+ /*#0 Lower src1+src2.*/
+ "paddsw %%mm2,%%mm0\n\t"
+ /*#0 Higher src1+src2.*/
+ "paddsw %%mm3,%%mm1\n\t"
+ /*#1 Copy src1.*/
+ "movq %%mm4,%%mm2\n\t"
+ /*#0 Build lo average.*/
+ "psraw $1,%%mm0\n\t"
+ /*#1 Copy src2.*/
+ "movq %%mm5,%%mm3\n\t"
+ /*#1 Unpack lower src1.*/
+ "punpcklbw %%mm7,%%mm4\n\t"
+ /*#0 Build hi average.*/
+ "psraw $1,%%mm1\n\t"
+ /*#1 Unpack higher src1.*/
+ "punpckhbw %%mm7,%%mm2\n\t"
+ /*#0 low+=residue.*/
+ "paddsw (%[residue]),%%mm0\n\t"
+ /*#1 Unpack lower src2.*/
+ "punpcklbw %%mm7,%%mm5\n\t"
+ /*#0 high+=residue.*/
+ "paddsw 8(%[residue]),%%mm1\n\t"
+ /*#1 Unpack higher src2.*/
+ "punpckhbw %%mm7,%%mm3\n\t"
+ /*#1 Lower src1+src2.*/
+ "paddsw %%mm4,%%mm5\n\t"
+ /*#0 Pack and saturate.*/
+ "packuswb %%mm1,%%mm0\n\t"
+ /*#1 Higher src1+src2.*/
+ "paddsw %%mm2,%%mm3\n\t"
+ /*#0 Write row.*/
+ "movq %%mm0,(%[dst])\n\t"
+ /*#1 Build lo average.*/
+ "psraw $1,%%mm5\n\t"
+ /*#1 Build hi average.*/
+ "psraw $1,%%mm3\n\t"
+ /*#1 low+=residue.*/
+ "paddsw 16(%[residue]),%%mm5\n\t"
+ /*#1 high+=residue.*/
+ "paddsw 24(%[residue]),%%mm3\n\t"
+ /*#1 Pack and saturate.*/
+ "packuswb %%mm3,%%mm5\n\t"
+ /*#1 Write row ptr.*/
+ "movq %%mm5,(%[dst],%[ystride])\n\t"
+ /*Advance residue ptr.*/
+ "add $32,%[residue]\n\t"
+ /*Advance dest ptr.*/
+ "lea (%[dst],%[ystride],2),%[dst]\n\t"
+ :[dst]"+r"(_dst),[residue]"+r"(_residue),
+ [src1]"+%r"(_src1),[src2]"+r"(_src2)
+ :[ystride]"r"((ptrdiff_t)_ystride)
+ :"memory"
+ );
+ }
+}
+
+void oc_restore_fpu_mmx(void){
+ __asm__ __volatile__("emms\n\t");
+}
+#endif
diff --git a/media/libtheora/lib/x86/mmxidct.c b/media/libtheora/lib/x86/mmxidct.c
new file mode 100644
index 000000000..8d61bdfb1
--- /dev/null
+++ b/media/libtheora/lib/x86/mmxidct.c
@@ -0,0 +1,562 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxidct.c 17446 2010-09-23 20:06:20Z tterribe $
+
+ ********************************************************************/
+
+/*MMX acceleration of Theora's iDCT.
+ Originally written by Rudolf Marek, based on code from On2's VP3.*/
+#include "x86int.h"
+#include "../dct.h"
+
+#if defined(OC_X86_ASM)
+
+/*These are offsets into the table of constants below.*/
+/*7 rows of cosines, in order: pi/16 * (1 ... 7).*/
+#define OC_COSINE_OFFSET (0)
+/*A row of 8's.*/
+#define OC_EIGHT_OFFSET (56)
+
+
+
+/*38 cycles*/
+#define OC_IDCT_BEGIN(_y,_x) \
+ "#OC_IDCT_BEGIN\n\t" \
+ "movq "OC_I(3,_x)",%%mm2\n\t" \
+ "movq "OC_MEM_OFFS(0x30,c)",%%mm6\n\t" \
+ "movq %%mm2,%%mm4\n\t" \
+ "movq "OC_J(5,_x)",%%mm7\n\t" \
+ "pmulhw %%mm6,%%mm4\n\t" \
+ "movq "OC_MEM_OFFS(0x50,c)",%%mm1\n\t" \
+ "pmulhw %%mm7,%%mm6\n\t" \
+ "movq %%mm1,%%mm5\n\t" \
+ "pmulhw %%mm2,%%mm1\n\t" \
+ "movq "OC_I(1,_x)",%%mm3\n\t" \
+ "pmulhw %%mm7,%%mm5\n\t" \
+ "movq "OC_MEM_OFFS(0x10,c)",%%mm0\n\t" \
+ "paddw %%mm2,%%mm4\n\t" \
+ "paddw %%mm7,%%mm6\n\t" \
+ "paddw %%mm1,%%mm2\n\t" \
+ "movq "OC_J(7,_x)",%%mm1\n\t" \
+ "paddw %%mm5,%%mm7\n\t" \
+ "movq %%mm0,%%mm5\n\t" \
+ "pmulhw %%mm3,%%mm0\n\t" \
+ "paddw %%mm7,%%mm4\n\t" \
+ "pmulhw %%mm1,%%mm5\n\t" \
+ "movq "OC_MEM_OFFS(0x70,c)",%%mm7\n\t" \
+ "psubw %%mm2,%%mm6\n\t" \
+ "paddw %%mm3,%%mm0\n\t" \
+ "pmulhw %%mm7,%%mm3\n\t" \
+ "movq "OC_I(2,_x)",%%mm2\n\t" \
+ "pmulhw %%mm1,%%mm7\n\t" \
+ "paddw %%mm1,%%mm5\n\t" \
+ "movq %%mm2,%%mm1\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x20,c)",%%mm2\n\t" \
+ "psubw %%mm5,%%mm3\n\t" \
+ "movq "OC_J(6,_x)",%%mm5\n\t" \
+ "paddw %%mm7,%%mm0\n\t" \
+ "movq %%mm5,%%mm7\n\t" \
+ "psubw %%mm4,%%mm0\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x20,c)",%%mm5\n\t" \
+ "paddw %%mm1,%%mm2\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x60,c)",%%mm1\n\t" \
+ "paddw %%mm4,%%mm4\n\t" \
+ "paddw %%mm0,%%mm4\n\t" \
+ "psubw %%mm6,%%mm3\n\t" \
+ "paddw %%mm7,%%mm5\n\t" \
+ "paddw %%mm6,%%mm6\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x60,c)",%%mm7\n\t" \
+ "paddw %%mm3,%%mm6\n\t" \
+ "movq %%mm4,"OC_I(1,_y)"\n\t" \
+ "psubw %%mm5,%%mm1\n\t" \
+ "movq "OC_MEM_OFFS(0x40,c)",%%mm4\n\t" \
+ "movq %%mm3,%%mm5\n\t" \
+ "pmulhw %%mm4,%%mm3\n\t" \
+ "paddw %%mm2,%%mm7\n\t" \
+ "movq %%mm6,"OC_I(2,_y)"\n\t" \
+ "movq %%mm0,%%mm2\n\t" \
+ "movq "OC_I(0,_x)",%%mm6\n\t" \
+ "pmulhw %%mm4,%%mm0\n\t" \
+ "paddw %%mm3,%%mm5\n\t" \
+ "movq "OC_J(4,_x)",%%mm3\n\t" \
+ "psubw %%mm1,%%mm5\n\t" \
+ "paddw %%mm0,%%mm2\n\t" \
+ "psubw %%mm3,%%mm6\n\t" \
+ "movq %%mm6,%%mm0\n\t" \
+ "pmulhw %%mm4,%%mm6\n\t" \
+ "paddw %%mm3,%%mm3\n\t" \
+ "paddw %%mm1,%%mm1\n\t" \
+ "paddw %%mm0,%%mm3\n\t" \
+ "paddw %%mm5,%%mm1\n\t" \
+ "pmulhw %%mm3,%%mm4\n\t" \
+ "paddw %%mm0,%%mm6\n\t" \
+ "psubw %%mm2,%%mm6\n\t" \
+ "paddw %%mm2,%%mm2\n\t" \
+ "movq "OC_I(1,_y)",%%mm0\n\t" \
+ "paddw %%mm6,%%mm2\n\t" \
+ "paddw %%mm3,%%mm4\n\t" \
+ "psubw %%mm1,%%mm2\n\t" \
+ "#end OC_IDCT_BEGIN\n\t" \
+
+/*38+8=46 cycles.*/
+#define OC_ROW_IDCT(_y,_x) \
+ "#OC_ROW_IDCT\n" \
+ OC_IDCT_BEGIN(_y,_x) \
+ /*r3=D'*/ \
+ "movq "OC_I(2,_y)",%%mm3\n\t" \
+ /*r4=E'=E-G*/ \
+ "psubw %%mm7,%%mm4\n\t" \
+ /*r1=H'+H'*/ \
+ "paddw %%mm1,%%mm1\n\t" \
+ /*r7=G+G*/ \
+ "paddw %%mm7,%%mm7\n\t" \
+ /*r1=R1=A''+H'*/ \
+ "paddw %%mm2,%%mm1\n\t" \
+ /*r7=G'=E+G*/ \
+ "paddw %%mm4,%%mm7\n\t" \
+ /*r4=R4=E'-D'*/ \
+ "psubw %%mm3,%%mm4\n\t" \
+ "paddw %%mm3,%%mm3\n\t" \
+ /*r6=R6=F'-B''*/ \
+ "psubw %%mm5,%%mm6\n\t" \
+ "paddw %%mm5,%%mm5\n\t" \
+ /*r3=R3=E'+D'*/ \
+ "paddw %%mm4,%%mm3\n\t" \
+ /*r5=R5=F'+B''*/ \
+ "paddw %%mm6,%%mm5\n\t" \
+ /*r7=R7=G'-C'*/ \
+ "psubw %%mm0,%%mm7\n\t" \
+ "paddw %%mm0,%%mm0\n\t" \
+ /*Save R1.*/ \
+ "movq %%mm1,"OC_I(1,_y)"\n\t" \
+ /*r0=R0=G.+C.*/ \
+ "paddw %%mm7,%%mm0\n\t" \
+ "#end OC_ROW_IDCT\n\t" \
+
+/*The following macro does two 4x4 transposes in place.
+ At entry, we assume:
+ r0 = a3 a2 a1 a0
+ I(1) = b3 b2 b1 b0
+ r2 = c3 c2 c1 c0
+ r3 = d3 d2 d1 d0
+
+ r4 = e3 e2 e1 e0
+ r5 = f3 f2 f1 f0
+ r6 = g3 g2 g1 g0
+ r7 = h3 h2 h1 h0
+
+ At exit, we have:
+ I(0) = d0 c0 b0 a0
+ I(1) = d1 c1 b1 a1
+ I(2) = d2 c2 b2 a2
+ I(3) = d3 c3 b3 a3
+
+ J(4) = h0 g0 f0 e0
+ J(5) = h1 g1 f1 e1
+ J(6) = h2 g2 f2 e2
+ J(7) = h3 g3 f3 e3
+
+ I(0) I(1) I(2) I(3) is the transpose of r0 I(1) r2 r3.
+ J(4) J(5) J(6) J(7) is the transpose of r4 r5 r6 r7.
+
+ Since r1 is free at entry, we calculate the Js first.*/
+/*19 cycles.*/
+#define OC_TRANSPOSE(_y) \
+ "#OC_TRANSPOSE\n\t" \
+ "movq %%mm4,%%mm1\n\t" \
+ "punpcklwd %%mm5,%%mm4\n\t" \
+ "movq %%mm0,"OC_I(0,_y)"\n\t" \
+ "punpckhwd %%mm5,%%mm1\n\t" \
+ "movq %%mm6,%%mm0\n\t" \
+ "punpcklwd %%mm7,%%mm6\n\t" \
+ "movq %%mm4,%%mm5\n\t" \
+ "punpckldq %%mm6,%%mm4\n\t" \
+ "punpckhdq %%mm6,%%mm5\n\t" \
+ "movq %%mm1,%%mm6\n\t" \
+ "movq %%mm4,"OC_J(4,_y)"\n\t" \
+ "punpckhwd %%mm7,%%mm0\n\t" \
+ "movq %%mm5,"OC_J(5,_y)"\n\t" \
+ "punpckhdq %%mm0,%%mm6\n\t" \
+ "movq "OC_I(0,_y)",%%mm4\n\t" \
+ "punpckldq %%mm0,%%mm1\n\t" \
+ "movq "OC_I(1,_y)",%%mm5\n\t" \
+ "movq %%mm4,%%mm0\n\t" \
+ "movq %%mm6,"OC_J(7,_y)"\n\t" \
+ "punpcklwd %%mm5,%%mm0\n\t" \
+ "movq %%mm1,"OC_J(6,_y)"\n\t" \
+ "punpckhwd %%mm5,%%mm4\n\t" \
+ "movq %%mm2,%%mm5\n\t" \
+ "punpcklwd %%mm3,%%mm2\n\t" \
+ "movq %%mm0,%%mm1\n\t" \
+ "punpckldq %%mm2,%%mm0\n\t" \
+ "punpckhdq %%mm2,%%mm1\n\t" \
+ "movq %%mm4,%%mm2\n\t" \
+ "movq %%mm0,"OC_I(0,_y)"\n\t" \
+ "punpckhwd %%mm3,%%mm5\n\t" \
+ "movq %%mm1,"OC_I(1,_y)"\n\t" \
+ "punpckhdq %%mm5,%%mm4\n\t" \
+ "punpckldq %%mm5,%%mm2\n\t" \
+ "movq %%mm4,"OC_I(3,_y)"\n\t" \
+ "movq %%mm2,"OC_I(2,_y)"\n\t" \
+ "#end OC_TRANSPOSE\n\t" \
+
+/*38+19=57 cycles.*/
+#define OC_COLUMN_IDCT(_y) \
+ "#OC_COLUMN_IDCT\n" \
+ OC_IDCT_BEGIN(_y,_y) \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm2\n\t" \
+ /*r1=H'+H'*/ \
+ "paddw %%mm1,%%mm1\n\t" \
+ /*r1=R1=A''+H'*/ \
+ "paddw %%mm2,%%mm1\n\t" \
+ /*r2=NR2*/ \
+ "psraw $4,%%mm2\n\t" \
+ /*r4=E'=E-G*/ \
+ "psubw %%mm7,%%mm4\n\t" \
+ /*r1=NR1*/ \
+ "psraw $4,%%mm1\n\t" \
+ /*r3=D'*/ \
+ "movq "OC_I(2,_y)",%%mm3\n\t" \
+ /*r7=G+G*/ \
+ "paddw %%mm7,%%mm7\n\t" \
+ /*Store NR2 at I(2).*/ \
+ "movq %%mm2,"OC_I(2,_y)"\n\t" \
+ /*r7=G'=E+G*/ \
+ "paddw %%mm4,%%mm7\n\t" \
+ /*Store NR1 at I(1).*/ \
+ "movq %%mm1,"OC_I(1,_y)"\n\t" \
+ /*r4=R4=E'-D'*/ \
+ "psubw %%mm3,%%mm4\n\t" \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm4\n\t" \
+ /*r3=D'+D'*/ \
+ "paddw %%mm3,%%mm3\n\t" \
+ /*r3=R3=E'+D'*/ \
+ "paddw %%mm4,%%mm3\n\t" \
+ /*r4=NR4*/ \
+ "psraw $4,%%mm4\n\t" \
+ /*r6=R6=F'-B''*/ \
+ "psubw %%mm5,%%mm6\n\t" \
+ /*r3=NR3*/ \
+ "psraw $4,%%mm3\n\t" \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm6\n\t" \
+ /*r5=B''+B''*/ \
+ "paddw %%mm5,%%mm5\n\t" \
+ /*r5=R5=F'+B''*/ \
+ "paddw %%mm6,%%mm5\n\t" \
+ /*r6=NR6*/ \
+ "psraw $4,%%mm6\n\t" \
+ /*Store NR4 at J(4).*/ \
+ "movq %%mm4,"OC_J(4,_y)"\n\t" \
+ /*r5=NR5*/ \
+ "psraw $4,%%mm5\n\t" \
+ /*Store NR3 at I(3).*/ \
+ "movq %%mm3,"OC_I(3,_y)"\n\t" \
+ /*r7=R7=G'-C'*/ \
+ "psubw %%mm0,%%mm7\n\t" \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm7\n\t" \
+ /*r0=C'+C'*/ \
+ "paddw %%mm0,%%mm0\n\t" \
+ /*r0=R0=G'+C'*/ \
+ "paddw %%mm7,%%mm0\n\t" \
+ /*r7=NR7*/ \
+ "psraw $4,%%mm7\n\t" \
+ /*Store NR6 at J(6).*/ \
+ "movq %%mm6,"OC_J(6,_y)"\n\t" \
+ /*r0=NR0*/ \
+ "psraw $4,%%mm0\n\t" \
+ /*Store NR5 at J(5).*/ \
+ "movq %%mm5,"OC_J(5,_y)"\n\t" \
+ /*Store NR7 at J(7).*/ \
+ "movq %%mm7,"OC_J(7,_y)"\n\t" \
+ /*Store NR0 at I(0).*/ \
+ "movq %%mm0,"OC_I(0,_y)"\n\t" \
+ "#end OC_COLUMN_IDCT\n\t" \
+
+static void oc_idct8x8_slow_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ /*This routine accepts an 8x8 matrix, but in partially transposed form.
+ Every 4x4 block is transposed.*/
+ __asm__ __volatile__(
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16,_y)
+#define OC_J(_k,_y) OC_MEM_OFFS(((_k)-4)*16+8,_y)
+ OC_ROW_IDCT(y,x)
+ OC_TRANSPOSE(y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16+64,_y)
+#define OC_J(_k,_y) OC_MEM_OFFS(((_k)-4)*16+72,_y)
+ OC_ROW_IDCT(y,x)
+ OC_TRANSPOSE(y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16,_y)
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT(y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16+8,_y)
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT(y)
+#undef OC_I
+#undef OC_J
+ :[y]"=m"OC_ARRAY_OPERAND(ogg_int16_t,_y,64)
+ :[x]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,_x,64),
+ [c]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,OC_IDCT_CONSTS,128)
+ );
+ if(_x!=_y){
+ int i;
+ __asm__ __volatile__("pxor %%mm0,%%mm0\n\t"::);
+ for(i=0;i<4;i++){
+ __asm__ __volatile__(
+ "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x08,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x18,x)"\n\t"
+ :[x]"=m"OC_ARRAY_OPERAND(ogg_int16_t,_x+16*i,16)
+ );
+ }
+ }
+}
+
+/*25 cycles.*/
+#define OC_IDCT_BEGIN_10(_y,_x) \
+ "#OC_IDCT_BEGIN_10\n\t" \
+ "movq "OC_I(3,_x)",%%mm2\n\t" \
+ "nop\n\t" \
+ "movq "OC_MEM_OFFS(0x30,c)",%%mm6\n\t" \
+ "movq %%mm2,%%mm4\n\t" \
+ "movq "OC_MEM_OFFS(0x50,c)",%%mm1\n\t" \
+ "pmulhw %%mm6,%%mm4\n\t" \
+ "movq "OC_I(1,_x)",%%mm3\n\t" \
+ "pmulhw %%mm2,%%mm1\n\t" \
+ "movq "OC_MEM_OFFS(0x10,c)",%%mm0\n\t" \
+ "paddw %%mm2,%%mm4\n\t" \
+ "pxor %%mm6,%%mm6\n\t" \
+ "paddw %%mm1,%%mm2\n\t" \
+ "movq "OC_I(2,_x)",%%mm5\n\t" \
+ "pmulhw %%mm3,%%mm0\n\t" \
+ "movq %%mm5,%%mm1\n\t" \
+ "paddw %%mm3,%%mm0\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x70,c)",%%mm3\n\t" \
+ "psubw %%mm2,%%mm6\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x20,c)",%%mm5\n\t" \
+ "psubw %%mm4,%%mm0\n\t" \
+ "movq "OC_I(2,_x)",%%mm7\n\t" \
+ "paddw %%mm4,%%mm4\n\t" \
+ "paddw %%mm5,%%mm7\n\t" \
+ "paddw %%mm0,%%mm4\n\t" \
+ "pmulhw "OC_MEM_OFFS(0x60,c)",%%mm1\n\t" \
+ "psubw %%mm6,%%mm3\n\t" \
+ "movq %%mm4,"OC_I(1,_y)"\n\t" \
+ "paddw %%mm6,%%mm6\n\t" \
+ "movq "OC_MEM_OFFS(0x40,c)",%%mm4\n\t" \
+ "paddw %%mm3,%%mm6\n\t" \
+ "movq %%mm3,%%mm5\n\t" \
+ "pmulhw %%mm4,%%mm3\n\t" \
+ "movq %%mm6,"OC_I(2,_y)"\n\t" \
+ "movq %%mm0,%%mm2\n\t" \
+ "movq "OC_I(0,_x)",%%mm6\n\t" \
+ "pmulhw %%mm4,%%mm0\n\t" \
+ "paddw %%mm3,%%mm5\n\t" \
+ "paddw %%mm0,%%mm2\n\t" \
+ "psubw %%mm1,%%mm5\n\t" \
+ "pmulhw %%mm4,%%mm6\n\t" \
+ "paddw "OC_I(0,_x)",%%mm6\n\t" \
+ "paddw %%mm1,%%mm1\n\t" \
+ "movq %%mm6,%%mm4\n\t" \
+ "paddw %%mm5,%%mm1\n\t" \
+ "psubw %%mm2,%%mm6\n\t" \
+ "paddw %%mm2,%%mm2\n\t" \
+ "movq "OC_I(1,_y)",%%mm0\n\t" \
+ "paddw %%mm6,%%mm2\n\t" \
+ "psubw %%mm1,%%mm2\n\t" \
+ "nop\n\t" \
+ "#end OC_IDCT_BEGIN_10\n\t" \
+
+/*25+8=33 cycles.*/
+#define OC_ROW_IDCT_10(_y,_x) \
+ "#OC_ROW_IDCT_10\n\t" \
+ OC_IDCT_BEGIN_10(_y,_x) \
+ /*r3=D'*/ \
+ "movq "OC_I(2,_y)",%%mm3\n\t" \
+ /*r4=E'=E-G*/ \
+ "psubw %%mm7,%%mm4\n\t" \
+ /*r1=H'+H'*/ \
+ "paddw %%mm1,%%mm1\n\t" \
+ /*r7=G+G*/ \
+ "paddw %%mm7,%%mm7\n\t" \
+ /*r1=R1=A''+H'*/ \
+ "paddw %%mm2,%%mm1\n\t" \
+ /*r7=G'=E+G*/ \
+ "paddw %%mm4,%%mm7\n\t" \
+ /*r4=R4=E'-D'*/ \
+ "psubw %%mm3,%%mm4\n\t" \
+ "paddw %%mm3,%%mm3\n\t" \
+ /*r6=R6=F'-B''*/ \
+ "psubw %%mm5,%%mm6\n\t" \
+ "paddw %%mm5,%%mm5\n\t" \
+ /*r3=R3=E'+D'*/ \
+ "paddw %%mm4,%%mm3\n\t" \
+ /*r5=R5=F'+B''*/ \
+ "paddw %%mm6,%%mm5\n\t" \
+ /*r7=R7=G'-C'*/ \
+ "psubw %%mm0,%%mm7\n\t" \
+ "paddw %%mm0,%%mm0\n\t" \
+ /*Save R1.*/ \
+ "movq %%mm1,"OC_I(1,_y)"\n\t" \
+ /*r0=R0=G'+C'*/ \
+ "paddw %%mm7,%%mm0\n\t" \
+ "#end OC_ROW_IDCT_10\n\t" \
+
+/*25+19=44 cycles'*/
+#define OC_COLUMN_IDCT_10(_y) \
+ "#OC_COLUMN_IDCT_10\n\t" \
+ OC_IDCT_BEGIN_10(_y,_y) \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm2\n\t" \
+ /*r1=H'+H'*/ \
+ "paddw %%mm1,%%mm1\n\t" \
+ /*r1=R1=A''+H'*/ \
+ "paddw %%mm2,%%mm1\n\t" \
+ /*r2=NR2*/ \
+ "psraw $4,%%mm2\n\t" \
+ /*r4=E'=E-G*/ \
+ "psubw %%mm7,%%mm4\n\t" \
+ /*r1=NR1*/ \
+ "psraw $4,%%mm1\n\t" \
+ /*r3=D'*/ \
+ "movq "OC_I(2,_y)",%%mm3\n\t" \
+ /*r7=G+G*/ \
+ "paddw %%mm7,%%mm7\n\t" \
+ /*Store NR2 at I(2).*/ \
+ "movq %%mm2,"OC_I(2,_y)"\n\t" \
+ /*r7=G'=E+G*/ \
+ "paddw %%mm4,%%mm7\n\t" \
+ /*Store NR1 at I(1).*/ \
+ "movq %%mm1,"OC_I(1,_y)"\n\t" \
+ /*r4=R4=E'-D'*/ \
+ "psubw %%mm3,%%mm4\n\t" \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm4\n\t" \
+ /*r3=D'+D'*/ \
+ "paddw %%mm3,%%mm3\n\t" \
+ /*r3=R3=E'+D'*/ \
+ "paddw %%mm4,%%mm3\n\t" \
+ /*r4=NR4*/ \
+ "psraw $4,%%mm4\n\t" \
+ /*r6=R6=F'-B''*/ \
+ "psubw %%mm5,%%mm6\n\t" \
+ /*r3=NR3*/ \
+ "psraw $4,%%mm3\n\t" \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm6\n\t" \
+ /*r5=B''+B''*/ \
+ "paddw %%mm5,%%mm5\n\t" \
+ /*r5=R5=F'+B''*/ \
+ "paddw %%mm6,%%mm5\n\t" \
+ /*r6=NR6*/ \
+ "psraw $4,%%mm6\n\t" \
+ /*Store NR4 at J(4).*/ \
+ "movq %%mm4,"OC_J(4,_y)"\n\t" \
+ /*r5=NR5*/ \
+ "psraw $4,%%mm5\n\t" \
+ /*Store NR3 at I(3).*/ \
+ "movq %%mm3,"OC_I(3,_y)"\n\t" \
+ /*r7=R7=G'-C'*/ \
+ "psubw %%mm0,%%mm7\n\t" \
+ "paddw "OC_MEM_OFFS(0x00,c)",%%mm7\n\t" \
+ /*r0=C'+C'*/ \
+ "paddw %%mm0,%%mm0\n\t" \
+ /*r0=R0=G'+C'*/ \
+ "paddw %%mm7,%%mm0\n\t" \
+ /*r7=NR7*/ \
+ "psraw $4,%%mm7\n\t" \
+ /*Store NR6 at J(6).*/ \
+ "movq %%mm6,"OC_J(6,_y)"\n\t" \
+ /*r0=NR0*/ \
+ "psraw $4,%%mm0\n\t" \
+ /*Store NR5 at J(5).*/ \
+ "movq %%mm5,"OC_J(5,_y)"\n\t" \
+ /*Store NR7 at J(7).*/ \
+ "movq %%mm7,"OC_J(7,_y)"\n\t" \
+ /*Store NR0 at I(0).*/ \
+ "movq %%mm0,"OC_I(0,_y)"\n\t" \
+ "#end OC_COLUMN_IDCT_10\n\t" \
+
+static void oc_idct8x8_10_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ __asm__ __volatile__(
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16,_y)
+#define OC_J(_k,_y) OC_MEM_OFFS(((_k)-4)*16+8,_y)
+ /*Done with dequant, descramble, and partial transpose.
+ Now do the iDCT itself.*/
+ OC_ROW_IDCT_10(y,x)
+ OC_TRANSPOSE(y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16,_y)
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT_10(y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) OC_MEM_OFFS((_k)*16+8,_y)
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT_10(y)
+#undef OC_I
+#undef OC_J
+ :[y]"=m"OC_ARRAY_OPERAND(ogg_int16_t,_y,64)
+ :[x]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,_x,64),
+ [c]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,OC_IDCT_CONSTS,128)
+ );
+ if(_x!=_y){
+ __asm__ __volatile__(
+ "pxor %%mm0,%%mm0\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x20,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x30,x)"\n\t"
+ :[x]"+m"OC_ARRAY_OPERAND(ogg_int16_t,_x,28)
+ );
+ }
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.*/
+void oc_idct8x8_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi){
+ /*_last_zzi is subtly different from an actual count of the number of
+ coefficients we decoded for this block.
+ It contains the value of zzi BEFORE the final token in the block was
+ decoded.
+ In most cases this is an EOB token (the continuation of an EOB run from a
+ previous block counts), and so this is the same as the coefficient count.
+ However, in the case that the last token was NOT an EOB token, but filled
+ the block up with exactly 64 coefficients, _last_zzi will be less than 64.
+ Provided the last token was not a pure zero run, the minimum value it can
+ be is 46, and so that doesn't affect any of the cases in this routine.
+ However, if the last token WAS a pure zero run of length 63, then _last_zzi
+ will be 1 while the number of coefficients decoded is 64.
+ Thus, we will trigger the following special case, where the real
+ coefficient count would not.
+ Note also that a zero run of length 64 will give _last_zzi a value of 0,
+ but we still process the DC coefficient, which might have a non-zero value
+ due to DC prediction.
+ Although convoluted, this is arguably the correct behavior: it allows us to
+ use a smaller transform when the block ends with a long zero run instead
+ of a normal EOB token.
+ It could be smarter... multiple separate zero runs at the end of a block
+ will fool it, but an encoder that generates these really deserves what it
+ gets.
+ Needless to say we inherited this approach from VP3.*/
+ /*Then perform the iDCT.*/
+ if(_last_zzi<=10)oc_idct8x8_10_mmx(_y,_x);
+ else oc_idct8x8_slow_mmx(_y,_x);
+}
+
+#endif
diff --git a/media/libtheora/lib/x86/mmxloop.h b/media/libtheora/lib/x86/mmxloop.h
new file mode 100644
index 000000000..1f6090b56
--- /dev/null
+++ b/media/libtheora/lib/x86/mmxloop.h
@@ -0,0 +1,318 @@
+#if !defined(_x86_mmxloop_H)
+# define _x86_mmxloop_H (1)
+# include <stddef.h>
+# include "x86int.h"
+
+#if defined(OC_X86_ASM)
+
+/*On entry, mm0={a0,...,a7}, mm1={b0,...,b7}, mm2={c0,...,c7}, mm3={d0,...d7}.
+ On exit, mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)} and
+ mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}; mm0 and mm3 are clobbered.*/
+#define OC_LOOP_FILTER8_MMX \
+ "#OC_LOOP_FILTER8_MMX\n\t" \
+ /*mm7=0*/ \
+ "pxor %%mm7,%%mm7\n\t" \
+ /*mm6:mm0={a0,...,a7}*/ \
+ "movq %%mm0,%%mm6\n\t" \
+ "punpcklbw %%mm7,%%mm0\n\t" \
+ "punpckhbw %%mm7,%%mm6\n\t" \
+ /*mm3:mm5={d0,...,d7}*/ \
+ "movq %%mm3,%%mm5\n\t" \
+ "punpcklbw %%mm7,%%mm3\n\t" \
+ "punpckhbw %%mm7,%%mm5\n\t" \
+ /*mm6:mm0={a0-d0,...,a7-d7}*/ \
+ "psubw %%mm3,%%mm0\n\t" \
+ "psubw %%mm5,%%mm6\n\t" \
+ /*mm3:mm1={b0,...,b7}*/ \
+ "movq %%mm1,%%mm3\n\t" \
+ "punpcklbw %%mm7,%%mm1\n\t" \
+ "movq %%mm2,%%mm4\n\t" \
+ "punpckhbw %%mm7,%%mm3\n\t" \
+ /*mm5:mm4={c0,...,c7}*/ \
+ "movq %%mm2,%%mm5\n\t" \
+ "punpcklbw %%mm7,%%mm4\n\t" \
+ "punpckhbw %%mm7,%%mm5\n\t" \
+ /*mm7={3}x4 \
+ mm5:mm4={c0-b0,...,c7-b7}*/ \
+ "pcmpeqw %%mm7,%%mm7\n\t" \
+ "psubw %%mm1,%%mm4\n\t" \
+ "psrlw $14,%%mm7\n\t" \
+ "psubw %%mm3,%%mm5\n\t" \
+ /*Scale by 3.*/ \
+ "pmullw %%mm7,%%mm4\n\t" \
+ "pmullw %%mm7,%%mm5\n\t" \
+ /*mm7={4}x4 \
+ mm5:mm4=f={a0-d0+3*(c0-b0),...,a7-d7+3*(c7-b7)}*/ \
+ "psrlw $1,%%mm7\n\t" \
+ "paddw %%mm0,%%mm4\n\t" \
+ "psllw $2,%%mm7\n\t" \
+ "movq (%[ll]),%%mm0\n\t" \
+ "paddw %%mm6,%%mm5\n\t" \
+ /*R_i has the range [-127,128], so we compute -R_i instead. \
+ mm4=-R_i=-(f+4>>3)=0xFF^(f-4>>3)*/ \
+ "psubw %%mm7,%%mm4\n\t" \
+ "psubw %%mm7,%%mm5\n\t" \
+ "psraw $3,%%mm4\n\t" \
+ "psraw $3,%%mm5\n\t" \
+ "pcmpeqb %%mm7,%%mm7\n\t" \
+ "packsswb %%mm5,%%mm4\n\t" \
+ "pxor %%mm6,%%mm6\n\t" \
+ "pxor %%mm7,%%mm4\n\t" \
+ "packuswb %%mm3,%%mm1\n\t" \
+ /*Now compute lflim of -mm4 cf. Section 7.10 of the sepc.*/ \
+ /*There's no unsigned byte+signed byte with unsigned saturation op code, so \
+ we have to split things by sign (the other option is to work in 16 bits, \
+ but working in 8 bits gives much better parallelism). \
+ We compute abs(R_i), but save a mask of which terms were negative in mm6. \
+ Then we compute mm4=abs(lflim(R_i,L))=min(abs(R_i),max(2*L-abs(R_i),0)). \
+ Finally, we split mm4 into positive and negative pieces using the mask in \
+ mm6, and add and subtract them as appropriate.*/ \
+ /*mm4=abs(-R_i)*/ \
+ /*mm7=255-2*L*/ \
+ "pcmpgtb %%mm4,%%mm6\n\t" \
+ "psubb %%mm0,%%mm7\n\t" \
+ "pxor %%mm6,%%mm4\n\t" \
+ "psubb %%mm0,%%mm7\n\t" \
+ "psubb %%mm6,%%mm4\n\t" \
+ /*mm7=255-max(2*L-abs(R_i),0)*/ \
+ "paddusb %%mm4,%%mm7\n\t" \
+ /*mm4=min(abs(R_i),max(2*L-abs(R_i),0))*/ \
+ "paddusb %%mm7,%%mm4\n\t" \
+ "psubusb %%mm7,%%mm4\n\t" \
+ /*Now split mm4 by the original sign of -R_i.*/ \
+ "movq %%mm4,%%mm5\n\t" \
+ "pand %%mm6,%%mm4\n\t" \
+ "pandn %%mm5,%%mm6\n\t" \
+ /*mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)}*/ \
+ /*mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}*/ \
+ "paddusb %%mm4,%%mm1\n\t" \
+ "psubusb %%mm4,%%mm2\n\t" \
+ "psubusb %%mm6,%%mm1\n\t" \
+ "paddusb %%mm6,%%mm2\n\t" \
+
+/*On entry, mm0={a0,...,a7}, mm1={b0,...,b7}, mm2={c0,...,c7}, mm3={d0,...d7}.
+ On exit, mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)} and
+ mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}.
+ All other MMX registers are clobbered.*/
+#define OC_LOOP_FILTER8_MMXEXT \
+ "#OC_LOOP_FILTER8_MMXEXT\n\t" \
+ /*R_i=(a_i-3*b_i+3*c_i-d_i+4>>3) has the range [-127,128], so we compute \
+ -R_i=(-a_i+3*b_i-3*c_i+d_i+3>>3) instead.*/ \
+ /*This first part is based on the transformation \
+ f = -(3*(c-b)+a-d+4>>3) \
+ = -(3*(c+255-b)+(a+255-d)+4-1020>>3) \
+ = -(3*(c+~b)+(a+~d)-1016>>3) \
+ = 127-(3*(c+~b)+(a+~d)>>3) \
+ = 128+~(3*(c+~b)+(a+~d)>>3) (mod 256). \
+ Although pavgb(a,b) = (a+b+1>>1) (biased up), we rely heavily on the \
+ fact that ~pavgb(~a,~b) = (a+b>>1) (biased down). \
+ Using this, the last expression above can be computed in 8 bits of working \
+ precision via: \
+ u = ~pavgb(~b,c); \
+ v = pavgb(b,~c); \
+ This mask is 0 or 0xFF, and controls whether t is biased up or down: \
+ m = u-v; \
+ t = m^pavgb(m^~a,m^d); \
+ f = 128+pavgb(pavgb(t,u),v); \
+ This required some careful analysis to ensure that carries are propagated \
+ correctly in all cases, but has been checked exhaustively.*/ \
+ /*input (a, b, c, d, ., ., ., .)*/ \
+ /*ff=0xFF; \
+ u=b; \
+ v=c; \
+ ll=255-2*L;*/ \
+ "pcmpeqb %%mm7,%%mm7\n\t" \
+ "movq %%mm1,%%mm4\n\t" \
+ "movq %%mm2,%%mm5\n\t" \
+ "movq (%[ll]),%%mm6\n\t" \
+ /*allocated u, v, ll, ff: (a, b, c, d, u, v, ll, ff)*/ \
+ /*u^=ff; \
+ v^=ff;*/ \
+ "pxor %%mm7,%%mm4\n\t" \
+ "pxor %%mm7,%%mm5\n\t" \
+ /*allocated ll: (a, b, c, d, u, v, ll, ff)*/ \
+ /*u=pavgb(u,c); \
+ v=pavgb(v,b);*/ \
+ "pavgb %%mm2,%%mm4\n\t" \
+ "pavgb %%mm1,%%mm5\n\t" \
+ /*u^=ff; \
+ a^=ff;*/ \
+ "pxor %%mm7,%%mm4\n\t" \
+ "pxor %%mm7,%%mm0\n\t" \
+ /*m=u-v;*/ \
+ "psubb %%mm5,%%mm4\n\t" \
+ /*freed u, allocated m: (a, b, c, d, m, v, ll, ff)*/ \
+ /*a^=m; \
+ d^=m;*/ \
+ "pxor %%mm4,%%mm0\n\t" \
+ "pxor %%mm4,%%mm3\n\t" \
+ /*t=pavgb(a,d);*/ \
+ "pavgb %%mm3,%%mm0\n\t" \
+ "psllw $7,%%mm7\n\t" \
+ /*freed a, d, ff, allocated t, of: (t, b, c, ., m, v, ll, of)*/ \
+ /*t^=m; \
+ u=m+v;*/ \
+ "pxor %%mm4,%%mm0\n\t" \
+ "paddb %%mm5,%%mm4\n\t" \
+ /*freed t, m, allocated f, u: (f, b, c, ., u, v, ll, of)*/ \
+ /*f=pavgb(f,u); \
+ of=128;*/ \
+ "pavgb %%mm4,%%mm0\n\t" \
+ "packsswb %%mm7,%%mm7\n\t" \
+ /*freed u, ff, allocated ll: (f, b, c, ., ll, v, ll, of)*/ \
+ /*f=pavgb(f,v);*/ \
+ "pavgb %%mm5,%%mm0\n\t" \
+ "movq %%mm7,%%mm3\n\t" \
+ "movq %%mm6,%%mm4\n\t" \
+ /*freed v, allocated of: (f, b, c, of, ll, ., ll, of)*/ \
+ /*Now compute lflim of R_i=-(128+mm0) cf. Section 7.10 of the sepc.*/ \
+ /*There's no unsigned byte+signed byte with unsigned saturation op code, so \
+ we have to split things by sign (the other option is to work in 16 bits, \
+ but staying in 8 bits gives much better parallelism).*/ \
+ /*Instead of adding the offset of 128 in mm3, we use it to split mm0. \
+ This is the same number of instructions as computing a mask and splitting \
+ after the lflim computation, but has shorter dependency chains.*/ \
+ /*mm0=R_i<0?-R_i:0 (denoted abs(R_i<0))\
+ mm3=R_i>0?R_i:0* (denoted abs(R_i>0))*/ \
+ "psubusb %%mm0,%%mm3\n\t" \
+ "psubusb %%mm7,%%mm0\n\t" \
+ /*mm6=255-max(2*L-abs(R_i<0),0) \
+ mm4=255-max(2*L-abs(R_i>0),0)*/ \
+ "paddusb %%mm3,%%mm4\n\t" \
+ "paddusb %%mm0,%%mm6\n\t" \
+ /*mm0=min(abs(R_i<0),max(2*L-abs(R_i<0),0)) \
+ mm3=min(abs(R_i>0),max(2*L-abs(R_i>0),0))*/ \
+ "paddusb %%mm4,%%mm3\n\t" \
+ "paddusb %%mm6,%%mm0\n\t" \
+ "psubusb %%mm4,%%mm3\n\t" \
+ "psubusb %%mm6,%%mm0\n\t" \
+ /*mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)}*/ \
+ /*mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}*/ \
+ "paddusb %%mm3,%%mm1\n\t" \
+ "psubusb %%mm3,%%mm2\n\t" \
+ "psubusb %%mm0,%%mm1\n\t" \
+ "paddusb %%mm0,%%mm2\n\t" \
+
+#define OC_LOOP_FILTER_V(_filter,_pix,_ystride,_ll) \
+ do{ \
+ ptrdiff_t ystride3__; \
+ __asm__ __volatile__( \
+ /*mm0={a0,...,a7}*/ \
+ "movq (%[pix]),%%mm0\n\t" \
+ /*ystride3=_ystride*3*/ \
+ "lea (%[ystride],%[ystride],2),%[ystride3]\n\t" \
+ /*mm3={d0,...,d7}*/ \
+ "movq (%[pix],%[ystride3]),%%mm3\n\t" \
+ /*mm1={b0,...,b7}*/ \
+ "movq (%[pix],%[ystride]),%%mm1\n\t" \
+ /*mm2={c0,...,c7}*/ \
+ "movq (%[pix],%[ystride],2),%%mm2\n\t" \
+ _filter \
+ /*Write it back out.*/ \
+ "movq %%mm1,(%[pix],%[ystride])\n\t" \
+ "movq %%mm2,(%[pix],%[ystride],2)\n\t" \
+ :[ystride3]"=&r"(ystride3__) \
+ :[pix]"r"(_pix-_ystride*2),[ystride]"r"((ptrdiff_t)(_ystride)), \
+ [ll]"r"(_ll) \
+ :"memory" \
+ ); \
+ } \
+ while(0)
+
+#define OC_LOOP_FILTER_H(_filter,_pix,_ystride,_ll) \
+ do{ \
+ unsigned char *pix__; \
+ ptrdiff_t ystride3__; \
+ ptrdiff_t d__; \
+ pix__=(_pix)-2; \
+ __asm__ __volatile__( \
+ /*x x x x d0 c0 b0 a0*/ \
+ "movd (%[pix]),%%mm0\n\t" \
+ /*x x x x d1 c1 b1 a1*/ \
+ "movd (%[pix],%[ystride]),%%mm1\n\t" \
+ /*ystride3=_ystride*3*/ \
+ "lea (%[ystride],%[ystride],2),%[ystride3]\n\t" \
+ /*x x x x d2 c2 b2 a2*/ \
+ "movd (%[pix],%[ystride],2),%%mm2\n\t" \
+ /*x x x x d3 c3 b3 a3*/ \
+ "lea (%[pix],%[ystride],4),%[d]\n\t" \
+ "movd (%[pix],%[ystride3]),%%mm3\n\t" \
+ /*x x x x d4 c4 b4 a4*/ \
+ "movd (%[d]),%%mm4\n\t" \
+ /*x x x x d5 c5 b5 a5*/ \
+ "movd (%[d],%[ystride]),%%mm5\n\t" \
+ /*x x x x d6 c6 b6 a6*/ \
+ "movd (%[d],%[ystride],2),%%mm6\n\t" \
+ /*x x x x d7 c7 b7 a7*/ \
+ "movd (%[d],%[ystride3]),%%mm7\n\t" \
+ /*mm0=d1 d0 c1 c0 b1 b0 a1 a0*/ \
+ "punpcklbw %%mm1,%%mm0\n\t" \
+ /*mm2=d3 d2 c3 c2 b3 b2 a3 a2*/ \
+ "punpcklbw %%mm3,%%mm2\n\t" \
+ /*mm3=d1 d0 c1 c0 b1 b0 a1 a0*/ \
+ "movq %%mm0,%%mm3\n\t" \
+ /*mm0=b3 b2 b1 b0 a3 a2 a1 a0*/ \
+ "punpcklwd %%mm2,%%mm0\n\t" \
+ /*mm3=d3 d2 d1 d0 c3 c2 c1 c0*/ \
+ "punpckhwd %%mm2,%%mm3\n\t" \
+ /*mm1=b3 b2 b1 b0 a3 a2 a1 a0*/ \
+ "movq %%mm0,%%mm1\n\t" \
+ /*mm4=d5 d4 c5 c4 b5 b4 a5 a4*/ \
+ "punpcklbw %%mm5,%%mm4\n\t" \
+ /*mm6=d7 d6 c7 c6 b7 b6 a7 a6*/ \
+ "punpcklbw %%mm7,%%mm6\n\t" \
+ /*mm5=d5 d4 c5 c4 b5 b4 a5 a4*/ \
+ "movq %%mm4,%%mm5\n\t" \
+ /*mm4=b7 b6 b5 b4 a7 a6 a5 a4*/ \
+ "punpcklwd %%mm6,%%mm4\n\t" \
+ /*mm5=d7 d6 d5 d4 c7 c6 c5 c4*/ \
+ "punpckhwd %%mm6,%%mm5\n\t" \
+ /*mm2=d3 d2 d1 d0 c3 c2 c1 c0*/ \
+ "movq %%mm3,%%mm2\n\t" \
+ /*mm0=a7 a6 a5 a4 a3 a2 a1 a0*/ \
+ "punpckldq %%mm4,%%mm0\n\t" \
+ /*mm1=b7 b6 b5 b4 b3 b2 b1 b0*/ \
+ "punpckhdq %%mm4,%%mm1\n\t" \
+ /*mm2=c7 c6 c5 c4 c3 c2 c1 c0*/ \
+ "punpckldq %%mm5,%%mm2\n\t" \
+ /*mm3=d7 d6 d5 d4 d3 d2 d1 d0*/ \
+ "punpckhdq %%mm5,%%mm3\n\t" \
+ _filter \
+ /*mm2={b0+R_0'',...,b7+R_7''}*/ \
+ "movq %%mm1,%%mm0\n\t" \
+ /*mm1={b0+R_0'',c0-R_0'',...,b3+R_3'',c3-R_3''}*/ \
+ "punpcklbw %%mm2,%%mm1\n\t" \
+ /*mm2={b4+R_4'',c4-R_4'',...,b7+R_7'',c7-R_7''}*/ \
+ "punpckhbw %%mm2,%%mm0\n\t" \
+ /*[d]=c1 b1 c0 b0*/ \
+ "movd %%mm1,%[d]\n\t" \
+ "movw %w[d],1(%[pix])\n\t" \
+ "psrlq $32,%%mm1\n\t" \
+ "shr $16,%[d]\n\t" \
+ "movw %w[d],1(%[pix],%[ystride])\n\t" \
+ /*[d]=c3 b3 c2 b2*/ \
+ "movd %%mm1,%[d]\n\t" \
+ "movw %w[d],1(%[pix],%[ystride],2)\n\t" \
+ "shr $16,%[d]\n\t" \
+ "movw %w[d],1(%[pix],%[ystride3])\n\t" \
+ "lea (%[pix],%[ystride],4),%[pix]\n\t" \
+ /*[d]=c5 b5 c4 b4*/ \
+ "movd %%mm0,%[d]\n\t" \
+ "movw %w[d],1(%[pix])\n\t" \
+ "psrlq $32,%%mm0\n\t" \
+ "shr $16,%[d]\n\t" \
+ "movw %w[d],1(%[pix],%[ystride])\n\t" \
+ /*[d]=c7 b7 c6 b6*/ \
+ "movd %%mm0,%[d]\n\t" \
+ "movw %w[d],1(%[pix],%[ystride],2)\n\t" \
+ "shr $16,%[d]\n\t" \
+ "movw %w[d],1(%[pix],%[ystride3])\n\t" \
+ :[pix]"+r"(pix__),[ystride3]"=&r"(ystride3__),[d]"=&r"(d__) \
+ :[ystride]"r"((ptrdiff_t)(_ystride)),[ll]"r"(_ll) \
+ :"memory" \
+ ); \
+ } \
+ while(0)
+
+# endif
+#endif
diff --git a/media/libtheora/lib/x86/mmxstate.c b/media/libtheora/lib/x86/mmxstate.c
new file mode 100644
index 000000000..0b9586f94
--- /dev/null
+++ b/media/libtheora/lib/x86/mmxstate.c
@@ -0,0 +1,226 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxstate.c 17563 2010-10-25 17:40:54Z tterribe $
+
+ ********************************************************************/
+
+/*MMX acceleration of complete fragment reconstruction algorithm.
+ Originally written by Rudolf Marek.*/
+#include <string.h>
+#include "x86int.h"
+#include "mmxloop.h"
+
+#if defined(OC_X86_ASM)
+
+void oc_state_frag_recon_mmx(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){
+ unsigned char *dst;
+ ptrdiff_t frag_buf_off;
+ int ystride;
+ int refi;
+ /*Apply the inverse transform.*/
+ /*Special case only having a DC component.*/
+ if(_last_zzi<2){
+ /*Note that this value must be unsigned, to keep the __asm__ block from
+ sign-extending it when it puts it in a register.*/
+ ogg_uint16_t p;
+ int i;
+ /*We round this dequant product (and not any of the others) because there's
+ no iDCT rounding.*/
+ p=(ogg_int16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5);
+ /*Fill _dct_coeffs with p.*/
+ __asm__ __volatile__(
+ /*mm0=0000 0000 0000 AAAA*/
+ "movd %[p],%%mm0\n\t"
+ /*mm0=0000 0000 AAAA AAAA*/
+ "punpcklwd %%mm0,%%mm0\n\t"
+ /*mm0=AAAA AAAA AAAA AAAA*/
+ "punpckldq %%mm0,%%mm0\n\t"
+ :
+ :[p]"r"((unsigned)p)
+ );
+ for(i=0;i<4;i++){
+ __asm__ __volatile__(
+ "movq %%mm0,"OC_MEM_OFFS(0x00,y)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x08,y)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x10,y)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x18,y)"\n\t"
+ :[y]"=m"OC_ARRAY_OPERAND(ogg_int16_t,_dct_coeffs+64+16*i,16)
+ );
+ }
+ }
+ else{
+ /*Dequantize the DC coefficient.*/
+ _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant);
+ oc_idct8x8(_state,_dct_coeffs+64,_dct_coeffs,_last_zzi);
+ }
+ /*Fill in the target buffer.*/
+ frag_buf_off=_state->frag_buf_offs[_fragi];
+ refi=_state->frags[_fragi].refi;
+ ystride=_state->ref_ystride[_pli];
+ dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off;
+ if(refi==OC_FRAME_SELF)oc_frag_recon_intra_mmx(dst,ystride,_dct_coeffs+64);
+ else{
+ const unsigned char *ref;
+ int mvoffsets[2];
+ ref=_state->ref_frame_data[refi]+frag_buf_off;
+ if(oc_state_get_mv_offsets(_state,mvoffsets,_pli,
+ _state->frag_mvs[_fragi])>1){
+ oc_frag_recon_inter2_mmx(dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride,
+ _dct_coeffs+64);
+ }
+ else oc_frag_recon_inter_mmx(dst,ref+mvoffsets[0],ystride,_dct_coeffs+64);
+ }
+}
+
+/*We copy these entire function to inline the actual MMX routines so that we
+ use only a single indirect call.*/
+
+void oc_loop_filter_init_mmx(signed char _bv[256],int _flimit){
+ memset(_bv,_flimit,8);
+}
+
+/*Apply the loop filter to a given set of fragment rows in the given plane.
+ The filter may be run on the bottom edge, affecting pixels in the next row of
+ fragments, so this row also needs to be available.
+ _bv: The bounding values array.
+ _refi: The index of the frame buffer to filter.
+ _pli: The color plane to filter.
+ _fragy0: The Y coordinate of the first fragment row to filter.
+ _fragy_end: The Y coordinate of the fragment row to stop filtering at.*/
+void oc_state_loop_filter_frag_rows_mmx(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end){
+ OC_ALIGN8(unsigned char ll[8]);
+ const oc_fragment_plane *fplane;
+ const oc_fragment *frags;
+ const ptrdiff_t *frag_buf_offs;
+ unsigned char *ref_frame_data;
+ ptrdiff_t fragi_top;
+ ptrdiff_t fragi_bot;
+ ptrdiff_t fragi0;
+ ptrdiff_t fragi0_end;
+ int ystride;
+ int nhfrags;
+ memset(ll,_state->loop_filter_limits[_state->qis[0]],sizeof(ll));
+ fplane=_state->fplanes+_pli;
+ nhfrags=fplane->nhfrags;
+ fragi_top=fplane->froffset;
+ fragi_bot=fragi_top+fplane->nfrags;
+ fragi0=fragi_top+_fragy0*(ptrdiff_t)nhfrags;
+ fragi0_end=fragi0+(_fragy_end-_fragy0)*(ptrdiff_t)nhfrags;
+ ystride=_state->ref_ystride[_pli];
+ frags=_state->frags;
+ frag_buf_offs=_state->frag_buf_offs;
+ ref_frame_data=_state->ref_frame_data[_refi];
+ /*The following loops are constructed somewhat non-intuitively on purpose.
+ The main idea is: if a block boundary has at least one coded fragment on
+ it, the filter is applied to it.
+ However, the order that the filters are applied in matters, and VP3 chose
+ the somewhat strange ordering used below.*/
+ while(fragi0<fragi0_end){
+ ptrdiff_t fragi;
+ ptrdiff_t fragi_end;
+ fragi=fragi0;
+ fragi_end=fragi+nhfrags;
+ while(fragi<fragi_end){
+ if(frags[fragi].coded){
+ unsigned char *ref;
+ ref=ref_frame_data+frag_buf_offs[fragi];
+ if(fragi>fragi0){
+ OC_LOOP_FILTER_H(OC_LOOP_FILTER8_MMX,ref,ystride,ll);
+ }
+ if(fragi0>fragi_top){
+ OC_LOOP_FILTER_V(OC_LOOP_FILTER8_MMX,ref,ystride,ll);
+ }
+ if(fragi+1<fragi_end&&!frags[fragi+1].coded){
+ OC_LOOP_FILTER_H(OC_LOOP_FILTER8_MMX,ref+8,ystride,ll);
+ }
+ if(fragi+nhfrags<fragi_bot&&!frags[fragi+nhfrags].coded){
+ OC_LOOP_FILTER_V(OC_LOOP_FILTER8_MMX,ref+(ystride<<3),ystride,ll);
+ }
+ }
+ fragi++;
+ }
+ fragi0+=nhfrags;
+ }
+}
+
+void oc_loop_filter_init_mmxext(signed char _bv[256],int _flimit){
+ memset(_bv,~(_flimit<<1),8);
+}
+
+/*Apply the loop filter to a given set of fragment rows in the given plane.
+ The filter may be run on the bottom edge, affecting pixels in the next row of
+ fragments, so this row also needs to be available.
+ _bv: The bounding values array.
+ _refi: The index of the frame buffer to filter.
+ _pli: The color plane to filter.
+ _fragy0: The Y coordinate of the first fragment row to filter.
+ _fragy_end: The Y coordinate of the fragment row to stop filtering at.*/
+void oc_state_loop_filter_frag_rows_mmxext(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end){
+ const oc_fragment_plane *fplane;
+ const oc_fragment *frags;
+ const ptrdiff_t *frag_buf_offs;
+ unsigned char *ref_frame_data;
+ ptrdiff_t fragi_top;
+ ptrdiff_t fragi_bot;
+ ptrdiff_t fragi0;
+ ptrdiff_t fragi0_end;
+ int ystride;
+ int nhfrags;
+ fplane=_state->fplanes+_pli;
+ nhfrags=fplane->nhfrags;
+ fragi_top=fplane->froffset;
+ fragi_bot=fragi_top+fplane->nfrags;
+ fragi0=fragi_top+_fragy0*(ptrdiff_t)nhfrags;
+ fragi0_end=fragi_top+_fragy_end*(ptrdiff_t)nhfrags;
+ ystride=_state->ref_ystride[_pli];
+ frags=_state->frags;
+ frag_buf_offs=_state->frag_buf_offs;
+ ref_frame_data=_state->ref_frame_data[_refi];
+ /*The following loops are constructed somewhat non-intuitively on purpose.
+ The main idea is: if a block boundary has at least one coded fragment on
+ it, the filter is applied to it.
+ However, the order that the filters are applied in matters, and VP3 chose
+ the somewhat strange ordering used below.*/
+ while(fragi0<fragi0_end){
+ ptrdiff_t fragi;
+ ptrdiff_t fragi_end;
+ fragi=fragi0;
+ fragi_end=fragi+nhfrags;
+ while(fragi<fragi_end){
+ if(frags[fragi].coded){
+ unsigned char *ref;
+ ref=ref_frame_data+frag_buf_offs[fragi];
+ if(fragi>fragi0){
+ OC_LOOP_FILTER_H(OC_LOOP_FILTER8_MMXEXT,ref,ystride,_bv);
+ }
+ if(fragi0>fragi_top){
+ OC_LOOP_FILTER_V(OC_LOOP_FILTER8_MMXEXT,ref,ystride,_bv);
+ }
+ if(fragi+1<fragi_end&&!frags[fragi+1].coded){
+ OC_LOOP_FILTER_H(OC_LOOP_FILTER8_MMXEXT,ref+8,ystride,_bv);
+ }
+ if(fragi+nhfrags<fragi_bot&&!frags[fragi+nhfrags].coded){
+ OC_LOOP_FILTER_V(OC_LOOP_FILTER8_MMXEXT,ref+(ystride<<3),ystride,_bv);
+ }
+ }
+ fragi++;
+ }
+ fragi0+=nhfrags;
+ }
+}
+
+#endif
diff --git a/media/libtheora/lib/x86/sse2idct.c b/media/libtheora/lib/x86/sse2idct.c
new file mode 100644
index 000000000..5f8523fa5
--- /dev/null
+++ b/media/libtheora/lib/x86/sse2idct.c
@@ -0,0 +1,460 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxidct.c 16503 2009-08-22 18:14:02Z giles $
+
+ ********************************************************************/
+
+/*SSE2 acceleration of Theora's iDCT.*/
+#include "x86int.h"
+#include "sse2trans.h"
+#include "../dct.h"
+
+#if defined(OC_X86_ASM)
+
+/*A table of constants used by the MMX routines.*/
+const unsigned short __attribute__((aligned(16),used)) OC_IDCT_CONSTS[64]={
+ 8, 8, 8, 8, 8, 8, 8, 8,
+ OC_C1S7,OC_C1S7,OC_C1S7,OC_C1S7,OC_C1S7,OC_C1S7,OC_C1S7,OC_C1S7,
+ OC_C2S6,OC_C2S6,OC_C2S6,OC_C2S6,OC_C2S6,OC_C2S6,OC_C2S6,OC_C2S6,
+ OC_C3S5,OC_C3S5,OC_C3S5,OC_C3S5,OC_C3S5,OC_C3S5,OC_C3S5,OC_C3S5,
+ OC_C4S4,OC_C4S4,OC_C4S4,OC_C4S4,OC_C4S4,OC_C4S4,OC_C4S4,OC_C4S4,
+ OC_C5S3,OC_C5S3,OC_C5S3,OC_C5S3,OC_C5S3,OC_C5S3,OC_C5S3,OC_C5S3,
+ OC_C6S2,OC_C6S2,OC_C6S2,OC_C6S2,OC_C6S2,OC_C6S2,OC_C6S2,OC_C6S2,
+ OC_C7S1,OC_C7S1,OC_C7S1,OC_C7S1,OC_C7S1,OC_C7S1,OC_C7S1,OC_C7S1
+};
+
+
+/*Performs the first three stages of the iDCT.
+ xmm2, xmm6, xmm3, and xmm5 must contain the corresponding rows of the input
+ (accessed in that order).
+ The remaining rows must be in _x at their corresponding locations.
+ On output, xmm7 down to xmm4 contain rows 0 through 3, and xmm0 up to xmm3
+ contain rows 4 through 7.*/
+#define OC_IDCT_8x8_ABC(_x) \
+ "#OC_IDCT_8x8_ABC\n\t" \
+ /*Stage 1:*/ \
+ /*2-3 rotation by 6pi/16. \
+ xmm4=xmm7=C6, xmm0=xmm1=C2, xmm2=X2, xmm6=X6.*/ \
+ "movdqa "OC_MEM_OFFS(0x20,c)",%%xmm1\n\t" \
+ "movdqa "OC_MEM_OFFS(0x60,c)",%%xmm4\n\t" \
+ "movdqa %%xmm1,%%xmm0\n\t" \
+ "pmulhw %%xmm2,%%xmm1\n\t" \
+ "movdqa %%xmm4,%%xmm7\n\t" \
+ "pmulhw %%xmm6,%%xmm0\n\t" \
+ "pmulhw %%xmm2,%%xmm7\n\t" \
+ "pmulhw %%xmm6,%%xmm4\n\t" \
+ "paddw %%xmm6,%%xmm0\n\t" \
+ "movdqa "OC_MEM_OFFS(0x30,c)",%%xmm6\n\t" \
+ "paddw %%xmm1,%%xmm2\n\t" \
+ "psubw %%xmm0,%%xmm7\n\t" \
+ "movdqa %%xmm7,"OC_MEM_OFFS(0x00,buf)"\n\t" \
+ "paddw %%xmm4,%%xmm2\n\t" \
+ "movdqa "OC_MEM_OFFS(0x50,c)",%%xmm4\n\t" \
+ "movdqa %%xmm2,"OC_MEM_OFFS(0x10,buf)"\n\t" \
+ /*5-6 rotation by 3pi/16. \
+ xmm4=xmm2=C5, xmm1=xmm6=C3, xmm3=X3, xmm5=X5.*/ \
+ "movdqa %%xmm4,%%xmm2\n\t" \
+ "movdqa %%xmm6,%%xmm1\n\t" \
+ "pmulhw %%xmm3,%%xmm4\n\t" \
+ "pmulhw %%xmm5,%%xmm1\n\t" \
+ "pmulhw %%xmm3,%%xmm6\n\t" \
+ "pmulhw %%xmm5,%%xmm2\n\t" \
+ "paddw %%xmm3,%%xmm4\n\t" \
+ "paddw %%xmm5,%%xmm3\n\t" \
+ "paddw %%xmm6,%%xmm3\n\t" \
+ "movdqa "OC_MEM_OFFS(0x70,_x)",%%xmm6\n\t" \
+ "paddw %%xmm5,%%xmm1\n\t" \
+ "movdqa "OC_MEM_OFFS(0x10,_x)",%%xmm5\n\t" \
+ "paddw %%xmm3,%%xmm2\n\t" \
+ "movdqa "OC_MEM_OFFS(0x70,c)",%%xmm3\n\t" \
+ "psubw %%xmm4,%%xmm1\n\t" \
+ "movdqa "OC_MEM_OFFS(0x10,c)",%%xmm4\n\t" \
+ /*4-7 rotation by 7pi/16. \
+ xmm4=xmm7=C1, xmm3=xmm0=C7, xmm5=X1, xmm6=X7.*/ \
+ "movdqa %%xmm3,%%xmm0\n\t" \
+ "movdqa %%xmm4,%%xmm7\n\t" \
+ "pmulhw %%xmm5,%%xmm3\n\t" \
+ "pmulhw %%xmm5,%%xmm7\n\t" \
+ "pmulhw %%xmm6,%%xmm4\n\t" \
+ "pmulhw %%xmm6,%%xmm0\n\t" \
+ "paddw %%xmm6,%%xmm4\n\t" \
+ "movdqa "OC_MEM_OFFS(0x40,_x)",%%xmm6\n\t" \
+ "paddw %%xmm5,%%xmm7\n\t" \
+ "psubw %%xmm4,%%xmm3\n\t" \
+ "movdqa "OC_MEM_OFFS(0x40,c)",%%xmm4\n\t" \
+ "paddw %%xmm7,%%xmm0\n\t" \
+ "movdqa "OC_MEM_OFFS(0x00,_x)",%%xmm7\n\t" \
+ /*0-1 butterfly. \
+ xmm4=xmm5=C4, xmm7=X0, xmm6=X4.*/ \
+ "paddw %%xmm7,%%xmm6\n\t" \
+ "movdqa %%xmm4,%%xmm5\n\t" \
+ "pmulhw %%xmm6,%%xmm4\n\t" \
+ "paddw %%xmm7,%%xmm7\n\t" \
+ "psubw %%xmm6,%%xmm7\n\t" \
+ "paddw %%xmm6,%%xmm4\n\t" \
+ /*Stage 2:*/ \
+ /*4-5 butterfly: xmm3=t[4], xmm1=t[5] \
+ 7-6 butterfly: xmm2=t[6], xmm0=t[7]*/ \
+ "movdqa %%xmm3,%%xmm6\n\t" \
+ "paddw %%xmm1,%%xmm3\n\t" \
+ "psubw %%xmm1,%%xmm6\n\t" \
+ "movdqa %%xmm5,%%xmm1\n\t" \
+ "pmulhw %%xmm7,%%xmm5\n\t" \
+ "paddw %%xmm7,%%xmm5\n\t" \
+ "movdqa %%xmm0,%%xmm7\n\t" \
+ "paddw %%xmm2,%%xmm0\n\t" \
+ "psubw %%xmm2,%%xmm7\n\t" \
+ "movdqa %%xmm1,%%xmm2\n\t" \
+ "pmulhw %%xmm6,%%xmm1\n\t" \
+ "pmulhw %%xmm7,%%xmm2\n\t" \
+ "paddw %%xmm6,%%xmm1\n\t" \
+ "movdqa "OC_MEM_OFFS(0x00,buf)",%%xmm6\n\t" \
+ "paddw %%xmm7,%%xmm2\n\t" \
+ "movdqa "OC_MEM_OFFS(0x10,buf)",%%xmm7\n\t" \
+ /*Stage 3: \
+ 6-5 butterfly: xmm1=t[5], xmm2=t[6] -> xmm1=t[6]+t[5], xmm2=t[6]-t[5] \
+ 0-3 butterfly: xmm4=t[0], xmm7=t[3] -> xmm7=t[0]+t[3], xmm4=t[0]-t[3] \
+ 1-2 butterfly: xmm5=t[1], xmm6=t[2] -> xmm6=t[1]+t[2], xmm5=t[1]-t[2]*/ \
+ "paddw %%xmm2,%%xmm1\n\t" \
+ "paddw %%xmm5,%%xmm6\n\t" \
+ "paddw %%xmm4,%%xmm7\n\t" \
+ "paddw %%xmm2,%%xmm2\n\t" \
+ "paddw %%xmm4,%%xmm4\n\t" \
+ "paddw %%xmm5,%%xmm5\n\t" \
+ "psubw %%xmm1,%%xmm2\n\t" \
+ "psubw %%xmm7,%%xmm4\n\t" \
+ "psubw %%xmm6,%%xmm5\n\t" \
+
+/*Performs the last stage of the iDCT.
+ On input, xmm7 down to xmm4 contain rows 0 through 3, and xmm0 up to xmm3
+ contain rows 4 through 7.
+ On output, xmm0 through xmm7 contain the corresponding rows.*/
+#define OC_IDCT_8x8_D \
+ "#OC_IDCT_8x8_D\n\t" \
+ /*Stage 4: \
+ 0-7 butterfly: xmm7=t[0], xmm0=t[7] -> xmm0=t[0]+t[7], xmm7=t[0]-t[7] \
+ 1-6 butterfly: xmm6=t[1], xmm1=t[6] -> xmm1=t[1]+t[6], xmm6=t[1]-t[6] \
+ 2-5 butterfly: xmm5=t[2], xmm2=t[5] -> xmm2=t[2]+t[5], xmm5=t[2]-t[5] \
+ 3-4 butterfly: xmm4=t[3], xmm3=t[4] -> xmm3=t[3]+t[4], xmm4=t[3]-t[4]*/ \
+ "psubw %%xmm0,%%xmm7\n\t" \
+ "psubw %%xmm1,%%xmm6\n\t" \
+ "psubw %%xmm2,%%xmm5\n\t" \
+ "psubw %%xmm3,%%xmm4\n\t" \
+ "paddw %%xmm0,%%xmm0\n\t" \
+ "paddw %%xmm1,%%xmm1\n\t" \
+ "paddw %%xmm2,%%xmm2\n\t" \
+ "paddw %%xmm3,%%xmm3\n\t" \
+ "paddw %%xmm7,%%xmm0\n\t" \
+ "paddw %%xmm6,%%xmm1\n\t" \
+ "paddw %%xmm5,%%xmm2\n\t" \
+ "paddw %%xmm4,%%xmm3\n\t" \
+
+/*Performs the last stage of the iDCT.
+ On input, xmm7 down to xmm4 contain rows 0 through 3, and xmm0 up to xmm3
+ contain rows 4 through 7.
+ On output, xmm0 through xmm7 contain the corresponding rows.*/
+#define OC_IDCT_8x8_D_STORE \
+ "#OC_IDCT_8x8_D_STORE\n\t" \
+ /*Stage 4: \
+ 0-7 butterfly: xmm7=t[0], xmm0=t[7] -> xmm0=t[0]+t[7], xmm7=t[0]-t[7] \
+ 1-6 butterfly: xmm6=t[1], xmm1=t[6] -> xmm1=t[1]+t[6], xmm6=t[1]-t[6] \
+ 2-5 butterfly: xmm5=t[2], xmm2=t[5] -> xmm2=t[2]+t[5], xmm5=t[2]-t[5] \
+ 3-4 butterfly: xmm4=t[3], xmm3=t[4] -> xmm3=t[3]+t[4], xmm4=t[3]-t[4]*/ \
+ "psubw %%xmm3,%%xmm4\n\t" \
+ "movdqa %%xmm4,"OC_MEM_OFFS(0x40,y)"\n\t" \
+ "movdqa "OC_MEM_OFFS(0x00,c)",%%xmm4\n\t" \
+ "psubw %%xmm0,%%xmm7\n\t" \
+ "psubw %%xmm1,%%xmm6\n\t" \
+ "psubw %%xmm2,%%xmm5\n\t" \
+ "paddw %%xmm4,%%xmm7\n\t" \
+ "paddw %%xmm4,%%xmm6\n\t" \
+ "paddw %%xmm4,%%xmm5\n\t" \
+ "paddw "OC_MEM_OFFS(0x40,y)",%%xmm4\n\t" \
+ "paddw %%xmm0,%%xmm0\n\t" \
+ "paddw %%xmm1,%%xmm1\n\t" \
+ "paddw %%xmm2,%%xmm2\n\t" \
+ "paddw %%xmm3,%%xmm3\n\t" \
+ "paddw %%xmm7,%%xmm0\n\t" \
+ "paddw %%xmm6,%%xmm1\n\t" \
+ "psraw $4,%%xmm0\n\t" \
+ "paddw %%xmm5,%%xmm2\n\t" \
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x00,y)"\n\t" \
+ "psraw $4,%%xmm1\n\t" \
+ "paddw %%xmm4,%%xmm3\n\t" \
+ "movdqa %%xmm1,"OC_MEM_OFFS(0x10,y)"\n\t" \
+ "psraw $4,%%xmm2\n\t" \
+ "movdqa %%xmm2,"OC_MEM_OFFS(0x20,y)"\n\t" \
+ "psraw $4,%%xmm3\n\t" \
+ "movdqa %%xmm3,"OC_MEM_OFFS(0x30,y)"\n\t" \
+ "psraw $4,%%xmm4\n\t" \
+ "movdqa %%xmm4,"OC_MEM_OFFS(0x40,y)"\n\t" \
+ "psraw $4,%%xmm5\n\t" \
+ "movdqa %%xmm5,"OC_MEM_OFFS(0x50,y)"\n\t" \
+ "psraw $4,%%xmm6\n\t" \
+ "movdqa %%xmm6,"OC_MEM_OFFS(0x60,y)"\n\t" \
+ "psraw $4,%%xmm7\n\t" \
+ "movdqa %%xmm7,"OC_MEM_OFFS(0x70,y)"\n\t" \
+
+static void oc_idct8x8_slow_sse2(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ OC_ALIGN16(ogg_int16_t buf[16]);
+ /*This routine accepts an 8x8 matrix pre-transposed.*/
+ __asm__ __volatile__(
+ /*Load rows 2, 3, 5, and 6 for the first stage of the iDCT.*/
+ "movdqa "OC_MEM_OFFS(0x20,x)",%%xmm2\n\t"
+ "movdqa "OC_MEM_OFFS(0x60,x)",%%xmm6\n\t"
+ "movdqa "OC_MEM_OFFS(0x30,x)",%%xmm3\n\t"
+ "movdqa "OC_MEM_OFFS(0x50,x)",%%xmm5\n\t"
+ OC_IDCT_8x8_ABC(x)
+ OC_IDCT_8x8_D
+ OC_TRANSPOSE_8x8
+ /*Clear out rows 0, 1, 4, and 7 for the first stage of the iDCT.*/
+ "movdqa %%xmm7,"OC_MEM_OFFS(0x70,y)"\n\t"
+ "movdqa %%xmm4,"OC_MEM_OFFS(0x40,y)"\n\t"
+ "movdqa %%xmm1,"OC_MEM_OFFS(0x10,y)"\n\t"
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x00,y)"\n\t"
+ OC_IDCT_8x8_ABC(y)
+ OC_IDCT_8x8_D_STORE
+ :[buf]"=m"(OC_ARRAY_OPERAND(ogg_int16_t,buf,16)),
+ [y]"=m"(OC_ARRAY_OPERAND(ogg_int16_t,_y,64))
+ :[x]"m"(OC_CONST_ARRAY_OPERAND(ogg_int16_t,_x,64)),
+ [c]"m"(OC_CONST_ARRAY_OPERAND(ogg_int16_t,OC_IDCT_CONSTS,128))
+ );
+ if(_x!=_y){
+ int i;
+ __asm__ __volatile__("pxor %%xmm0,%%xmm0\n\t"::);
+ /*Clear input data for next block (decoder only).*/
+ for(i=0;i<2;i++){
+ __asm__ __volatile__(
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x00,x)"\n\t"
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x10,x)"\n\t"
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x20,x)"\n\t"
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x30,x)"\n\t"
+ :[x]"=m"(OC_ARRAY_OPERAND(ogg_int16_t,_x+i*32,32))
+ );
+ }
+ }
+}
+
+/*For the first step of the 10-coefficient version of the 8x8 iDCT, we only
+ need to work with four columns at a time.
+ Doing this in MMX is faster on processors with a 64-bit data path.*/
+#define OC_IDCT_8x8_10_MMX \
+ "#OC_IDCT_8x8_10_MMX\n\t" \
+ /*Stage 1:*/ \
+ /*2-3 rotation by 6pi/16. \
+ mm7=C6, mm6=C2, mm2=X2, X6=0.*/ \
+ "movq "OC_MEM_OFFS(0x60,c)",%%mm7\n\t" \
+ "movq "OC_MEM_OFFS(0x20,c)",%%mm6\n\t" \
+ "pmulhw %%mm2,%%mm6\n\t" \
+ "pmulhw %%mm2,%%mm7\n\t" \
+ "movq "OC_MEM_OFFS(0x50,c)",%%mm5\n\t" \
+ "paddw %%mm6,%%mm2\n\t" \
+ "movq %%mm2,"OC_MEM_OFFS(0x10,buf)"\n\t" \
+ "movq "OC_MEM_OFFS(0x30,c)",%%mm2\n\t" \
+ "movq %%mm7,"OC_MEM_OFFS(0x00,buf)"\n\t" \
+ /*5-6 rotation by 3pi/16. \
+ mm5=C5, mm2=C3, mm3=X3, X5=0.*/ \
+ "pmulhw %%mm3,%%mm5\n\t" \
+ "pmulhw %%mm3,%%mm2\n\t" \
+ "movq "OC_MEM_OFFS(0x10,c)",%%mm7\n\t" \
+ "paddw %%mm3,%%mm5\n\t" \
+ "paddw %%mm3,%%mm2\n\t" \
+ "movq "OC_MEM_OFFS(0x70,c)",%%mm3\n\t" \
+ /*4-7 rotation by 7pi/16. \
+ mm7=C1, mm3=C7, mm1=X1, X7=0.*/ \
+ "pmulhw %%mm1,%%mm3\n\t" \
+ "pmulhw %%mm1,%%mm7\n\t" \
+ "movq "OC_MEM_OFFS(0x40,c)",%%mm4\n\t" \
+ "movq %%mm3,%%mm6\n\t" \
+ "paddw %%mm1,%%mm7\n\t" \
+ /*0-1 butterfly. \
+ mm4=C4, mm0=X0, X4=0.*/ \
+ /*Stage 2:*/ \
+ /*4-5 butterfly: mm3=t[4], mm5=t[5] \
+ 7-6 butterfly: mm2=t[6], mm7=t[7]*/ \
+ "psubw %%mm5,%%mm3\n\t" \
+ "paddw %%mm5,%%mm6\n\t" \
+ "movq %%mm4,%%mm1\n\t" \
+ "pmulhw %%mm0,%%mm4\n\t" \
+ "paddw %%mm0,%%mm4\n\t" \
+ "movq %%mm7,%%mm0\n\t" \
+ "movq %%mm4,%%mm5\n\t" \
+ "paddw %%mm2,%%mm0\n\t" \
+ "psubw %%mm2,%%mm7\n\t" \
+ "movq %%mm1,%%mm2\n\t" \
+ "pmulhw %%mm6,%%mm1\n\t" \
+ "pmulhw %%mm7,%%mm2\n\t" \
+ "paddw %%mm6,%%mm1\n\t" \
+ "movq "OC_MEM_OFFS(0x00,buf)",%%mm6\n\t" \
+ "paddw %%mm7,%%mm2\n\t" \
+ "movq "OC_MEM_OFFS(0x10,buf)",%%mm7\n\t" \
+ /*Stage 3: \
+ 6-5 butterfly: mm1=t[5], mm2=t[6] -> mm1=t[6]+t[5], mm2=t[6]-t[5] \
+ 0-3 butterfly: mm4=t[0], mm7=t[3] -> mm7=t[0]+t[3], mm4=t[0]-t[3] \
+ 1-2 butterfly: mm5=t[1], mm6=t[2] -> mm6=t[1]+t[2], mm5=t[1]-t[2]*/ \
+ "paddw %%mm2,%%mm1\n\t" \
+ "paddw %%mm5,%%mm6\n\t" \
+ "paddw %%mm4,%%mm7\n\t" \
+ "paddw %%mm2,%%mm2\n\t" \
+ "paddw %%mm4,%%mm4\n\t" \
+ "paddw %%mm5,%%mm5\n\t" \
+ "psubw %%mm1,%%mm2\n\t" \
+ "psubw %%mm7,%%mm4\n\t" \
+ "psubw %%mm6,%%mm5\n\t" \
+ /*Stage 4: \
+ 0-7 butterfly: mm7=t[0], mm0=t[7] -> mm0=t[0]+t[7], mm7=t[0]-t[7] \
+ 1-6 butterfly: mm6=t[1], mm1=t[6] -> mm1=t[1]+t[6], mm6=t[1]-t[6] \
+ 2-5 butterfly: mm5=t[2], mm2=t[5] -> mm2=t[2]+t[5], mm5=t[2]-t[5] \
+ 3-4 butterfly: mm4=t[3], mm3=t[4] -> mm3=t[3]+t[4], mm4=t[3]-t[4]*/ \
+ "psubw %%mm0,%%mm7\n\t" \
+ "psubw %%mm1,%%mm6\n\t" \
+ "psubw %%mm2,%%mm5\n\t" \
+ "psubw %%mm3,%%mm4\n\t" \
+ "paddw %%mm0,%%mm0\n\t" \
+ "paddw %%mm1,%%mm1\n\t" \
+ "paddw %%mm2,%%mm2\n\t" \
+ "paddw %%mm3,%%mm3\n\t" \
+ "paddw %%mm7,%%mm0\n\t" \
+ "paddw %%mm6,%%mm1\n\t" \
+ "paddw %%mm5,%%mm2\n\t" \
+ "paddw %%mm4,%%mm3\n\t" \
+
+#define OC_IDCT_8x8_10_ABC \
+ "#OC_IDCT_8x8_10_ABC\n\t" \
+ /*Stage 1:*/ \
+ /*2-3 rotation by 6pi/16. \
+ xmm7=C6, xmm6=C2, xmm2=X2, X6=0.*/ \
+ "movdqa "OC_MEM_OFFS(0x60,c)",%%xmm7\n\t" \
+ "movdqa "OC_MEM_OFFS(0x20,c)",%%xmm6\n\t" \
+ "pmulhw %%xmm2,%%xmm6\n\t" \
+ "pmulhw %%xmm2,%%xmm7\n\t" \
+ "movdqa "OC_MEM_OFFS(0x50,c)",%%xmm5\n\t" \
+ "paddw %%xmm6,%%xmm2\n\t" \
+ "movdqa %%xmm2,"OC_MEM_OFFS(0x10,buf)"\n\t" \
+ "movdqa "OC_MEM_OFFS(0x30,c)",%%xmm2\n\t" \
+ "movdqa %%xmm7,"OC_MEM_OFFS(0x00,buf)"\n\t" \
+ /*5-6 rotation by 3pi/16. \
+ xmm5=C5, xmm2=C3, xmm3=X3, X5=0.*/ \
+ "pmulhw %%xmm3,%%xmm5\n\t" \
+ "pmulhw %%xmm3,%%xmm2\n\t" \
+ "movdqa "OC_MEM_OFFS(0x10,c)",%%xmm7\n\t" \
+ "paddw %%xmm3,%%xmm5\n\t" \
+ "paddw %%xmm3,%%xmm2\n\t" \
+ "movdqa "OC_MEM_OFFS(0x70,c)",%%xmm3\n\t" \
+ /*4-7 rotation by 7pi/16. \
+ xmm7=C1, xmm3=C7, xmm1=X1, X7=0.*/ \
+ "pmulhw %%xmm1,%%xmm3\n\t" \
+ "pmulhw %%xmm1,%%xmm7\n\t" \
+ "movdqa "OC_MEM_OFFS(0x40,c)",%%xmm4\n\t" \
+ "movdqa %%xmm3,%%xmm6\n\t" \
+ "paddw %%xmm1,%%xmm7\n\t" \
+ /*0-1 butterfly. \
+ xmm4=C4, xmm0=X0, X4=0.*/ \
+ /*Stage 2:*/ \
+ /*4-5 butterfly: xmm3=t[4], xmm5=t[5] \
+ 7-6 butterfly: xmm2=t[6], xmm7=t[7]*/ \
+ "psubw %%xmm5,%%xmm3\n\t" \
+ "paddw %%xmm5,%%xmm6\n\t" \
+ "movdqa %%xmm4,%%xmm1\n\t" \
+ "pmulhw %%xmm0,%%xmm4\n\t" \
+ "paddw %%xmm0,%%xmm4\n\t" \
+ "movdqa %%xmm7,%%xmm0\n\t" \
+ "movdqa %%xmm4,%%xmm5\n\t" \
+ "paddw %%xmm2,%%xmm0\n\t" \
+ "psubw %%xmm2,%%xmm7\n\t" \
+ "movdqa %%xmm1,%%xmm2\n\t" \
+ "pmulhw %%xmm6,%%xmm1\n\t" \
+ "pmulhw %%xmm7,%%xmm2\n\t" \
+ "paddw %%xmm6,%%xmm1\n\t" \
+ "movdqa "OC_MEM_OFFS(0x00,buf)",%%xmm6\n\t" \
+ "paddw %%xmm7,%%xmm2\n\t" \
+ "movdqa "OC_MEM_OFFS(0x10,buf)",%%xmm7\n\t" \
+ /*Stage 3: \
+ 6-5 butterfly: xmm1=t[5], xmm2=t[6] -> xmm1=t[6]+t[5], xmm2=t[6]-t[5] \
+ 0-3 butterfly: xmm4=t[0], xmm7=t[3] -> xmm7=t[0]+t[3], xmm4=t[0]-t[3] \
+ 1-2 butterfly: xmm5=t[1], xmm6=t[2] -> xmm6=t[1]+t[2], xmm5=t[1]-t[2]*/ \
+ "paddw %%xmm2,%%xmm1\n\t" \
+ "paddw %%xmm5,%%xmm6\n\t" \
+ "paddw %%xmm4,%%xmm7\n\t" \
+ "paddw %%xmm2,%%xmm2\n\t" \
+ "paddw %%xmm4,%%xmm4\n\t" \
+ "paddw %%xmm5,%%xmm5\n\t" \
+ "psubw %%xmm1,%%xmm2\n\t" \
+ "psubw %%xmm7,%%xmm4\n\t" \
+ "psubw %%xmm6,%%xmm5\n\t" \
+
+static void oc_idct8x8_10_sse2(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ OC_ALIGN16(ogg_int16_t buf[16]);
+ /*This routine accepts an 8x8 matrix pre-transposed.*/
+ __asm__ __volatile__(
+ "movq "OC_MEM_OFFS(0x20,x)",%%mm2\n\t"
+ "movq "OC_MEM_OFFS(0x30,x)",%%mm3\n\t"
+ "movq "OC_MEM_OFFS(0x10,x)",%%mm1\n\t"
+ "movq "OC_MEM_OFFS(0x00,x)",%%mm0\n\t"
+ OC_IDCT_8x8_10_MMX
+ OC_TRANSPOSE_8x4_MMX2SSE
+ OC_IDCT_8x8_10_ABC
+ OC_IDCT_8x8_D_STORE
+ :[buf]"=m"(OC_ARRAY_OPERAND(short,buf,16)),
+ [y]"=m"(OC_ARRAY_OPERAND(ogg_int16_t,_y,64))
+ :[x]"m"OC_CONST_ARRAY_OPERAND(ogg_int16_t,_x,64),
+ [c]"m"(OC_CONST_ARRAY_OPERAND(ogg_int16_t,OC_IDCT_CONSTS,128))
+ );
+ if(_x!=_y){
+ /*Clear input data for next block (decoder only).*/
+ __asm__ __volatile__(
+ "pxor %%mm0,%%mm0\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x00,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x10,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x20,x)"\n\t"
+ "movq %%mm0,"OC_MEM_OFFS(0x30,x)"\n\t"
+ :[x]"+m"(OC_ARRAY_OPERAND(ogg_int16_t,_x,28))
+ );
+ }
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.*/
+void oc_idct8x8_sse2(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi){
+ /*_last_zzi is subtly different from an actual count of the number of
+ coefficients we decoded for this block.
+ It contains the value of zzi BEFORE the final token in the block was
+ decoded.
+ In most cases this is an EOB token (the continuation of an EOB run from a
+ previous block counts), and so this is the same as the coefficient count.
+ However, in the case that the last token was NOT an EOB token, but filled
+ the block up with exactly 64 coefficients, _last_zzi will be less than 64.
+ Provided the last token was not a pure zero run, the minimum value it can
+ be is 46, and so that doesn't affect any of the cases in this routine.
+ However, if the last token WAS a pure zero run of length 63, then _last_zzi
+ will be 1 while the number of coefficients decoded is 64.
+ Thus, we will trigger the following special case, where the real
+ coefficient count would not.
+ Note also that a zero run of length 64 will give _last_zzi a value of 0,
+ but we still process the DC coefficient, which might have a non-zero value
+ due to DC prediction.
+ Although convoluted, this is arguably the correct behavior: it allows us to
+ use a smaller transform when the block ends with a long zero run instead
+ of a normal EOB token.
+ It could be smarter... multiple separate zero runs at the end of a block
+ will fool it, but an encoder that generates these really deserves what it
+ gets.
+ Needless to say we inherited this approach from VP3.*/
+ /*Then perform the iDCT.*/
+ if(_last_zzi<=10)oc_idct8x8_10_sse2(_y,_x);
+ else oc_idct8x8_slow_sse2(_y,_x);
+}
+
+#endif
diff --git a/media/libtheora/lib/x86/sse2trans.h b/media/libtheora/lib/x86/sse2trans.h
new file mode 100644
index 000000000..e76da5140
--- /dev/null
+++ b/media/libtheora/lib/x86/sse2trans.h
@@ -0,0 +1,242 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: sse2trans.h 15675 2009-02-06 09:43:27Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_x86_sse2trans_H)
+# define _x86_sse2trans_H (1)
+# include "x86int.h"
+
+# if defined(OC_X86_64_ASM)
+/*On x86-64 we can transpose in-place without spilling registers.
+ By clever choices of the order to apply the butterflies and the order of
+ their outputs, we can take the rows in order and output the columns in order
+ without any extra operations and using just one temporary register.*/
+# define OC_TRANSPOSE_8x8 \
+ "#OC_TRANSPOSE_8x8\n\t" \
+ "movdqa %%xmm4,%%xmm8\n\t" \
+ /*xmm4 = f3 e3 f2 e2 f1 e1 f0 e0*/ \
+ "punpcklwd %%xmm5,%%xmm4\n\t" \
+ /*xmm8 = f7 e7 f6 e6 f5 e5 f4 e4*/ \
+ "punpckhwd %%xmm5,%%xmm8\n\t" \
+ /*xmm5 is free.*/ \
+ "movdqa %%xmm0,%%xmm5\n\t" \
+ /*xmm0 = b3 a3 b2 a2 b1 a1 b0 a0*/ \
+ "punpcklwd %%xmm1,%%xmm0\n\t" \
+ /*xmm5 = b7 a7 b6 a6 b5 a5 b4 a4*/ \
+ "punpckhwd %%xmm1,%%xmm5\n\t" \
+ /*xmm1 is free.*/ \
+ "movdqa %%xmm6,%%xmm1\n\t" \
+ /*xmm6 = h3 g3 h2 g2 h1 g1 h0 g0*/ \
+ "punpcklwd %%xmm7,%%xmm6\n\t" \
+ /*xmm1 = h7 g7 h6 g6 h5 g5 h4 g4*/ \
+ "punpckhwd %%xmm7,%%xmm1\n\t" \
+ /*xmm7 is free.*/ \
+ "movdqa %%xmm2,%%xmm7\n\t" \
+ /*xmm2 = d7 c7 d6 c6 d5 c5 d4 c4*/ \
+ "punpckhwd %%xmm3,%%xmm2\n\t" \
+ /*xmm7 = d3 c3 d2 c2 d1 c1 d0 c0*/ \
+ "punpcklwd %%xmm3,%%xmm7\n\t" \
+ /*xmm3 is free.*/ \
+ "movdqa %%xmm0,%%xmm3\n\t" \
+ /*xmm0 = d1 c1 b1 a1 d0 c0 b0 a0*/ \
+ "punpckldq %%xmm7,%%xmm0\n\t" \
+ /*xmm3 = d3 c3 b3 a3 d2 c2 b2 a2*/ \
+ "punpckhdq %%xmm7,%%xmm3\n\t" \
+ /*xmm7 is free.*/ \
+ "movdqa %%xmm5,%%xmm7\n\t" \
+ /*xmm5 = d5 c5 b5 a5 d4 c4 b4 a4*/ \
+ "punpckldq %%xmm2,%%xmm5\n\t" \
+ /*xmm7 = d7 c7 b7 a7 d6 c6 b6 a6*/ \
+ "punpckhdq %%xmm2,%%xmm7\n\t" \
+ /*xmm2 is free.*/ \
+ "movdqa %%xmm4,%%xmm2\n\t" \
+ /*xmm4 = h3 g3 f3 e3 h2 g2 f2 e2*/ \
+ "punpckhdq %%xmm6,%%xmm4\n\t" \
+ /*xmm2 = h1 g1 f1 e1 h0 g0 f0 e0*/ \
+ "punpckldq %%xmm6,%%xmm2\n\t" \
+ /*xmm6 is free.*/ \
+ "movdqa %%xmm8,%%xmm6\n\t" \
+ /*xmm6 = h5 g5 f5 e5 h4 g4 f4 e4*/ \
+ "punpckldq %%xmm1,%%xmm6\n\t" \
+ /*xmm8 = h7 g7 f7 e7 h6 g6 f6 e6*/ \
+ "punpckhdq %%xmm1,%%xmm8\n\t" \
+ /*xmm1 is free.*/ \
+ "movdqa %%xmm0,%%xmm1\n\t" \
+ /*xmm0 = h0 g0 f0 e0 d0 c0 b0 a0*/ \
+ "punpcklqdq %%xmm2,%%xmm0\n\t" \
+ /*xmm1 = h1 g1 f1 e1 d1 c1 b1 a1*/ \
+ "punpckhqdq %%xmm2,%%xmm1\n\t" \
+ /*xmm2 is free.*/ \
+ "movdqa %%xmm3,%%xmm2\n\t" \
+ /*xmm3 = h3 g3 f3 e3 d3 c3 b3 a3*/ \
+ "punpckhqdq %%xmm4,%%xmm3\n\t" \
+ /*xmm2 = h2 g2 f2 e2 d2 c2 b2 a2*/ \
+ "punpcklqdq %%xmm4,%%xmm2\n\t" \
+ /*xmm4 is free.*/ \
+ "movdqa %%xmm5,%%xmm4\n\t" \
+ /*xmm5 = h5 g5 f5 e5 d5 c5 b5 a5*/ \
+ "punpckhqdq %%xmm6,%%xmm5\n\t" \
+ /*xmm4 = h4 g4 f4 e4 d4 c4 b4 a4*/ \
+ "punpcklqdq %%xmm6,%%xmm4\n\t" \
+ /*xmm6 is free.*/ \
+ "movdqa %%xmm7,%%xmm6\n\t" \
+ /*xmm7 = h7 g7 f7 e7 d7 c7 b7 a7*/ \
+ "punpckhqdq %%xmm8,%%xmm7\n\t" \
+ /*xmm6 = h6 g6 f6 e6 d6 c6 b6 a6*/ \
+ "punpcklqdq %%xmm8,%%xmm6\n\t" \
+ /*xmm8 is free.*/ \
+
+# else
+/*Otherwise, we need to spill some values to %[buf] temporarily.
+ Again, the butterflies are carefully arranged to get the columns to come out
+ in order, minimizing register spills and maximizing the delay between a load
+ and when the value loaded is actually used.*/
+# define OC_TRANSPOSE_8x8 \
+ "#OC_TRANSPOSE_8x8\n\t" \
+ /*buf[0] = a7 a6 a5 a4 a3 a2 a1 a0*/ \
+ "movdqa %%xmm0,"OC_MEM_OFFS(0x00,buf)"\n\t" \
+ /*xmm0 is free.*/ \
+ "movdqa %%xmm2,%%xmm0\n\t" \
+ /*xmm2 = d7 c7 d6 c6 d5 c5 d4 c4*/ \
+ "punpckhwd %%xmm3,%%xmm2\n\t" \
+ /*xmm0 = d3 c3 d2 c2 d1 c1 d0 c0*/ \
+ "punpcklwd %%xmm3,%%xmm0\n\t" \
+ /*xmm3 = a7 a6 a5 a4 a3 a2 a1 a0*/ \
+ "movdqa "OC_MEM_OFFS(0x00,buf)",%%xmm3\n\t" \
+ /*buf[1] = d7 c7 d6 c6 d5 c5 d4 c4*/ \
+ "movdqa %%xmm2,"OC_MEM_OFFS(0x10,buf)"\n\t" \
+ /*xmm2 is free.*/ \
+ "movdqa %%xmm6,%%xmm2\n\t" \
+ /*xmm6 = h3 g3 h2 g2 h1 g1 h0 g0*/ \
+ "punpcklwd %%xmm7,%%xmm6\n\t" \
+ /*xmm2 = h7 g7 h6 g6 h5 g5 h4 g4*/ \
+ "punpckhwd %%xmm7,%%xmm2\n\t" \
+ /*xmm7 is free.*/ \
+ "movdqa %%xmm4,%%xmm7\n\t" \
+ /*xmm4 = f3 e3 f2 e2 f1 e1 f0 e0*/ \
+ "punpcklwd %%xmm5,%%xmm4\n\t" \
+ /*xmm7 = f7 e7 f6 e6 f5 e5 f4 e4*/ \
+ "punpckhwd %%xmm5,%%xmm7\n\t" \
+ /*xmm5 is free.*/ \
+ "movdqa %%xmm3,%%xmm5\n\t" \
+ /*xmm3 = b3 a3 b2 a2 b1 a1 b0 a0*/ \
+ "punpcklwd %%xmm1,%%xmm3\n\t" \
+ /*xmm5 = b7 a7 b6 a6 b5 a5 b4 a4*/ \
+ "punpckhwd %%xmm1,%%xmm5\n\t" \
+ /*xmm1 is free.*/ \
+ "movdqa %%xmm7,%%xmm1\n\t" \
+ /*xmm7 = h5 g5 f5 e5 h4 g4 f4 e4*/ \
+ "punpckldq %%xmm2,%%xmm7\n\t" \
+ /*xmm1 = h7 g7 f7 e7 h6 g6 f6 e6*/ \
+ "punpckhdq %%xmm2,%%xmm1\n\t" \
+ /*xmm2 = d7 c7 d6 c6 d5 c5 d4 c4*/ \
+ "movdqa "OC_MEM_OFFS(0x10,buf)",%%xmm2\n\t" \
+ /*buf[0] = h7 g7 f7 e7 h6 g6 f6 e6*/ \
+ "movdqa %%xmm1,"OC_MEM_OFFS(0x00,buf)"\n\t" \
+ /*xmm1 is free.*/ \
+ "movdqa %%xmm3,%%xmm1\n\t" \
+ /*xmm3 = d3 c3 b3 a3 d2 c2 b2 a2*/ \
+ "punpckhdq %%xmm0,%%xmm3\n\t" \
+ /*xmm1 = d1 c1 b1 a1 d0 c0 b0 a0*/ \
+ "punpckldq %%xmm0,%%xmm1\n\t" \
+ /*xmm0 is free.*/ \
+ "movdqa %%xmm4,%%xmm0\n\t" \
+ /*xmm4 = h3 g3 f3 e3 h2 g2 f2 e2*/ \
+ "punpckhdq %%xmm6,%%xmm4\n\t" \
+ /*xmm0 = h1 g1 f1 e1 h0 g0 f0 e0*/ \
+ "punpckldq %%xmm6,%%xmm0\n\t" \
+ /*xmm6 is free.*/ \
+ "movdqa %%xmm5,%%xmm6\n\t" \
+ /*xmm5 = d5 c5 b5 a5 d4 c4 b4 a4*/ \
+ "punpckldq %%xmm2,%%xmm5\n\t" \
+ /*xmm6 = d7 c7 b7 a7 d6 c6 b6 a6*/ \
+ "punpckhdq %%xmm2,%%xmm6\n\t" \
+ /*xmm2 is free.*/ \
+ "movdqa %%xmm1,%%xmm2\n\t" \
+ /*xmm1 = h1 g1 f1 e1 d1 c1 b1 a1*/ \
+ "punpckhqdq %%xmm0,%%xmm1\n\t" \
+ /*xmm2 = h0 g0 f0 e0 d0 c0 b0 a0*/ \
+ "punpcklqdq %%xmm0,%%xmm2\n\t" \
+ /*xmm0 = h7 g7 f7 e7 h6 g6 f6 e6*/ \
+ "movdqa "OC_MEM_OFFS(0x00,buf)",%%xmm0\n\t" \
+ /*buf[1] = h0 g0 f0 e0 d0 c0 b0 a0*/ \
+ "movdqa %%xmm2,"OC_MEM_OFFS(0x10,buf)"\n\t" \
+ /*xmm2 is free.*/ \
+ "movdqa %%xmm3,%%xmm2\n\t" \
+ /*xmm3 = h3 g3 f3 e3 d3 c3 b3 a3*/ \
+ "punpckhqdq %%xmm4,%%xmm3\n\t" \
+ /*xmm2 = h2 g2 f2 e2 d2 c2 b2 a2*/ \
+ "punpcklqdq %%xmm4,%%xmm2\n\t" \
+ /*xmm4 is free.*/ \
+ "movdqa %%xmm5,%%xmm4\n\t" \
+ /*xmm5 = h5 g5 f5 e5 d5 c5 b5 a5*/ \
+ "punpckhqdq %%xmm7,%%xmm5\n\t" \
+ /*xmm4 = h4 g4 f4 e4 d4 c4 b4 a4*/ \
+ "punpcklqdq %%xmm7,%%xmm4\n\t" \
+ /*xmm7 is free.*/ \
+ "movdqa %%xmm6,%%xmm7\n\t" \
+ /*xmm6 = h6 g6 f6 e6 d6 c6 b6 a6*/ \
+ "punpcklqdq %%xmm0,%%xmm6\n\t" \
+ /*xmm7 = h7 g7 f7 e7 d7 c7 b7 a7*/ \
+ "punpckhqdq %%xmm0,%%xmm7\n\t" \
+ /*xmm0 = h0 g0 f0 e0 d0 c0 b0 a0*/ \
+ "movdqa "OC_MEM_OFFS(0x10,buf)",%%xmm0\n\t" \
+
+# endif
+
+/*Transpose 4 values in each of 8 MMX registers into 8 values in the first
+ four SSE registers.
+ No need to be clever here; we have plenty of room.*/
+# define OC_TRANSPOSE_8x4_MMX2SSE \
+ "#OC_TRANSPOSE_8x4_MMX2SSE\n\t" \
+ "movq2dq %%mm0,%%xmm0\n\t" \
+ "movq2dq %%mm1,%%xmm1\n\t" \
+ /*xmmA = b3 a3 b2 a2 b1 a1 b0 a0*/ \
+ "punpcklwd %%xmm1,%%xmm0\n\t" \
+ "movq2dq %%mm2,%%xmm3\n\t" \
+ "movq2dq %%mm3,%%xmm2\n\t" \
+ /*xmmC = d3 c3 d2 c2 d1 c1 d0 c0*/ \
+ "punpcklwd %%xmm2,%%xmm3\n\t" \
+ "movq2dq %%mm4,%%xmm4\n\t" \
+ "movq2dq %%mm5,%%xmm5\n\t" \
+ /*xmmE = f3 e3 f2 e2 f1 e1 f0 e0*/ \
+ "punpcklwd %%xmm5,%%xmm4\n\t" \
+ "movq2dq %%mm6,%%xmm7\n\t" \
+ "movq2dq %%mm7,%%xmm6\n\t" \
+ /*xmmG = h3 g3 h2 g2 h1 g1 h0 g0*/ \
+ "punpcklwd %%xmm6,%%xmm7\n\t" \
+ "movdqa %%xmm0,%%xmm2\n\t" \
+ /*xmm0 = d1 c1 b1 a1 d0 c0 b0 a0*/ \
+ "punpckldq %%xmm3,%%xmm0\n\t" \
+ /*xmm2 = d3 c3 b3 a3 d2 c2 b2 a2*/ \
+ "punpckhdq %%xmm3,%%xmm2\n\t" \
+ "movdqa %%xmm4,%%xmm5\n\t" \
+ /*xmm4 = h1 g1 f1 e1 h0 g0 f0 e0*/ \
+ "punpckldq %%xmm7,%%xmm4\n\t" \
+ /*xmm3 = h3 g3 f3 e3 h2 g2 f2 e2*/ \
+ "punpckhdq %%xmm7,%%xmm5\n\t" \
+ "movdqa %%xmm0,%%xmm1\n\t" \
+ /*xmm0 = h0 g0 f0 e0 d0 c0 b0 a0*/ \
+ "punpcklqdq %%xmm4,%%xmm0\n\t" \
+ /*xmm1 = h1 g1 f1 e1 d1 c1 b1 a1*/ \
+ "punpckhqdq %%xmm4,%%xmm1\n\t" \
+ "movdqa %%xmm2,%%xmm3\n\t" \
+ /*xmm2 = h2 g2 f2 e2 d2 c2 b2 a2*/ \
+ "punpcklqdq %%xmm5,%%xmm2\n\t" \
+ /*xmm3 = h3 g3 f3 e3 d3 c3 b3 a3*/ \
+ "punpckhqdq %%xmm5,%%xmm3\n\t" \
+
+#endif
diff --git a/media/libtheora/lib/x86/x86cpu.c b/media/libtheora/lib/x86/x86cpu.c
new file mode 100644
index 000000000..c3a20b319
--- /dev/null
+++ b/media/libtheora/lib/x86/x86cpu.c
@@ -0,0 +1,182 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ CPU capability detection for x86 processors.
+ Originally written by Rudolf Marek.
+
+ function:
+ last mod: $Id: x86cpu.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#include "x86cpu.h"
+
+#if !defined(OC_X86_ASM)
+ogg_uint32_t oc_cpu_flags_get(void){
+ return 0;
+}
+#else
+# if defined(__amd64__)||defined(__x86_64__)
+/*On x86-64, gcc seems to be able to figure out how to save %rbx for us when
+ compiling with -fPIC.*/
+# define cpuid(_op,_eax,_ebx,_ecx,_edx) \
+ __asm__ __volatile__( \
+ "cpuid\n\t" \
+ :[eax]"=a"(_eax),[ebx]"=b"(_ebx),[ecx]"=c"(_ecx),[edx]"=d"(_edx) \
+ :"a"(_op) \
+ :"cc" \
+ )
+# else
+/*On x86-32, not so much.*/
+# define cpuid(_op,_eax,_ebx,_ecx,_edx) \
+ __asm__ __volatile__( \
+ "xchgl %%ebx,%[ebx]\n\t" \
+ "cpuid\n\t" \
+ "xchgl %%ebx,%[ebx]\n\t" \
+ :[eax]"=a"(_eax),[ebx]"=r"(_ebx),[ecx]"=c"(_ecx),[edx]"=d"(_edx) \
+ :"a"(_op) \
+ :"cc" \
+ )
+# endif
+
+static ogg_uint32_t oc_parse_intel_flags(ogg_uint32_t _edx,ogg_uint32_t _ecx){
+ ogg_uint32_t flags;
+ /*If there isn't even MMX, give up.*/
+ if(!(_edx&0x00800000))return 0;
+ flags=OC_CPU_X86_MMX;
+ if(_edx&0x02000000)flags|=OC_CPU_X86_MMXEXT|OC_CPU_X86_SSE;
+ if(_edx&0x04000000)flags|=OC_CPU_X86_SSE2;
+ if(_ecx&0x00000001)flags|=OC_CPU_X86_PNI;
+ if(_ecx&0x00000100)flags|=OC_CPU_X86_SSSE3;
+ if(_ecx&0x00080000)flags|=OC_CPU_X86_SSE4_1;
+ if(_ecx&0x00100000)flags|=OC_CPU_X86_SSE4_2;
+ return flags;
+}
+
+static ogg_uint32_t oc_parse_amd_flags(ogg_uint32_t _edx,ogg_uint32_t _ecx){
+ ogg_uint32_t flags;
+ /*If there isn't even MMX, give up.*/
+ if(!(_edx&0x00800000))return 0;
+ flags=OC_CPU_X86_MMX;
+ if(_edx&0x00400000)flags|=OC_CPU_X86_MMXEXT;
+ if(_edx&0x80000000)flags|=OC_CPU_X86_3DNOW;
+ if(_edx&0x40000000)flags|=OC_CPU_X86_3DNOWEXT;
+ if(_ecx&0x00000040)flags|=OC_CPU_X86_SSE4A;
+ if(_ecx&0x00000800)flags|=OC_CPU_X86_SSE5;
+ return flags;
+}
+
+ogg_uint32_t oc_cpu_flags_get(void){
+ ogg_uint32_t flags;
+ ogg_uint32_t eax;
+ ogg_uint32_t ebx;
+ ogg_uint32_t ecx;
+ ogg_uint32_t edx;
+# if !defined(__amd64__)&&!defined(__x86_64__)
+ /*Not all x86-32 chips support cpuid, so we have to check.*/
+ __asm__ __volatile__(
+ "pushfl\n\t"
+ "pushfl\n\t"
+ "popl %[a]\n\t"
+ "movl %[a],%[b]\n\t"
+ "xorl $0x200000,%[a]\n\t"
+ "pushl %[a]\n\t"
+ "popfl\n\t"
+ "pushfl\n\t"
+ "popl %[a]\n\t"
+ "popfl\n\t"
+ :[a]"=r"(eax),[b]"=r"(ebx)
+ :
+ :"cc"
+ );
+ /*No cpuid.*/
+ if(eax==ebx)return 0;
+# endif
+ cpuid(0,eax,ebx,ecx,edx);
+ /* l e t n I e n i u n e G*/
+ if(ecx==0x6C65746E&&edx==0x49656E69&&ebx==0x756E6547||
+ /* 6 8 x M T e n i u n e G*/
+ ecx==0x3638784D&&edx==0x54656E69&&ebx==0x756E6547){
+ int family;
+ int model;
+ /*Intel, Transmeta (tested with Crusoe TM5800):*/
+ cpuid(1,eax,ebx,ecx,edx);
+ flags=oc_parse_intel_flags(edx,ecx);
+ family=(eax>>8)&0xF;
+ model=(eax>>4)&0xF;
+ /*The SSE unit on the Pentium M and Core Duo is much slower than the MMX
+ unit, so don't use it.*/
+ if(family==6&&(model==9||model==13||model==14)){
+ flags&=~(OC_CPU_X86_SSE2|OC_CPU_X86_PNI);
+ }
+ }
+ /* D M A c i t n e h t u A*/
+ else if(ecx==0x444D4163&&edx==0x69746E65&&ebx==0x68747541||
+ /* C S N y b e d o e G*/
+ ecx==0x43534e20&&edx==0x79622065&&ebx==0x646f6547){
+ /*AMD, Geode:*/
+ cpuid(0x80000000,eax,ebx,ecx,edx);
+ if(eax<0x80000001)flags=0;
+ else{
+ cpuid(0x80000001,eax,ebx,ecx,edx);
+ flags=oc_parse_amd_flags(edx,ecx);
+ }
+ /*Also check for SSE.*/
+ cpuid(1,eax,ebx,ecx,edx);
+ flags|=oc_parse_intel_flags(edx,ecx);
+ }
+ /*Technically some VIA chips can be configured in the BIOS to return any
+ string here the user wants.
+ There is a special detection method that can be used to identify such
+ processors, but in my opinion, if the user really wants to change it, they
+ deserve what they get.*/
+ /* s l u a H r u a t n e C*/
+ else if(ecx==0x736C7561&&edx==0x48727561&&ebx==0x746E6543){
+ /*VIA:*/
+ /*I only have documentation for the C7 (Esther) and Isaiah (forthcoming)
+ chips (thanks to the engineers from Centaur Technology who provided it).
+ These chips support Intel-like cpuid info.
+ The C3-2 (Nehemiah) cores appear to, as well.*/
+ cpuid(1,eax,ebx,ecx,edx);
+ flags=oc_parse_intel_flags(edx,ecx);
+ if(eax>=0x80000001){
+ /*The (non-Nehemiah) C3 processors support AMD-like cpuid info.
+ We need to check this even if the Intel test succeeds to pick up 3DNow!
+ support on these processors.
+ Unlike actual AMD processors, we cannot _rely_ on this info, since
+ some cores (e.g., the 693 stepping of the Nehemiah) claim to support
+ this function, yet return edx=0, despite the Intel test indicating
+ MMX support.
+ Therefore the features detected here are strictly added to those
+ detected by the Intel test.*/
+ /*TODO: How about earlier chips?*/
+ cpuid(0x80000001,eax,ebx,ecx,edx);
+ /*Note: As of the C7, this function returns Intel-style extended feature
+ flags, not AMD-style.
+ Currently, this only defines bits 11, 20, and 29 (0x20100800), which
+ do not conflict with any of the AMD flags we inspect.
+ For the remaining bits, Intel tells us, "Do not count on their value",
+ but VIA assures us that they will all be zero (at least on the C7 and
+ Isaiah chips).
+ In the (unlikely) event a future processor uses bits 18, 19, 30, or 31
+ (0xC0C00000) for something else, we will have to add code to detect
+ the model to decide when it is appropriate to inspect them.*/
+ flags|=oc_parse_amd_flags(edx,ecx);
+ }
+ }
+ else{
+ /*Implement me.*/
+ flags=0;
+ }
+ return flags;
+}
+#endif
diff --git a/media/libtheora/lib/x86/x86cpu.h b/media/libtheora/lib/x86/x86cpu.h
new file mode 100644
index 000000000..153a48d89
--- /dev/null
+++ b/media/libtheora/lib/x86/x86cpu.h
@@ -0,0 +1,36 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+ function:
+ last mod: $Id: x86cpu.h 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_x86_x86cpu_H)
+# define _x86_x86cpu_H (1)
+#include "../internal.h"
+
+#define OC_CPU_X86_MMX (1<<0)
+#define OC_CPU_X86_3DNOW (1<<1)
+#define OC_CPU_X86_3DNOWEXT (1<<2)
+#define OC_CPU_X86_MMXEXT (1<<3)
+#define OC_CPU_X86_SSE (1<<4)
+#define OC_CPU_X86_SSE2 (1<<5)
+#define OC_CPU_X86_PNI (1<<6)
+#define OC_CPU_X86_SSSE3 (1<<7)
+#define OC_CPU_X86_SSE4_1 (1<<8)
+#define OC_CPU_X86_SSE4_2 (1<<9)
+#define OC_CPU_X86_SSE4A (1<<10)
+#define OC_CPU_X86_SSE5 (1<<11)
+
+ogg_uint32_t oc_cpu_flags_get(void);
+
+#endif
diff --git a/media/libtheora/lib/x86/x86int.h b/media/libtheora/lib/x86/x86int.h
new file mode 100644
index 000000000..35bfb0a02
--- /dev/null
+++ b/media/libtheora/lib/x86/x86int.h
@@ -0,0 +1,122 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86int.h 17578 2010-10-29 04:21:26Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_x86_x86int_H)
+# define _x86_x86int_H (1)
+# include "../internal.h"
+
+# if defined(OC_X86_ASM)
+# define oc_state_accel_init oc_state_accel_init_x86
+# if defined(OC_X86_64_ASM)
+/*x86-64 guarantees SIMD support up through at least SSE2.
+ If the best routine we have available only needs SSE2 (which at the moment
+ covers all of them), then we can avoid runtime detection and the indirect
+ call.*/
+# define oc_frag_copy(_state,_dst,_src,_ystride) \
+ oc_frag_copy_mmx(_dst,_src,_ystride)
+# define oc_frag_copy_list(_state,_dst_frame,_src_frame,_ystride, \
+ _fragis,_nfragis,_frag_buf_offs) \
+ oc_frag_copy_list_mmx(_dst_frame,_src_frame,_ystride, \
+ _fragis,_nfragis,_frag_buf_offs)
+# define oc_frag_recon_intra(_state,_dst,_ystride,_residue) \
+ oc_frag_recon_intra_mmx(_dst,_ystride,_residue)
+# define oc_frag_recon_inter(_state,_dst,_src,_ystride,_residue) \
+ oc_frag_recon_inter_mmx(_dst,_src,_ystride,_residue)
+# define oc_frag_recon_inter2(_state,_dst,_src1,_src2,_ystride,_residue) \
+ oc_frag_recon_inter2_mmx(_dst,_src1,_src2,_ystride,_residue)
+# define oc_idct8x8(_state,_y,_x,_last_zzi) \
+ oc_idct8x8_sse2(_y,_x,_last_zzi)
+# define oc_state_frag_recon oc_state_frag_recon_mmx
+# define oc_loop_filter_init(_state,_bv,_flimit) \
+ oc_loop_filter_init_mmxext(_bv,_flimit)
+# define oc_state_loop_filter_frag_rows oc_state_loop_filter_frag_rows_mmxext
+# define oc_restore_fpu(_state) \
+ oc_restore_fpu_mmx()
+# else
+# define OC_STATE_USE_VTABLE (1)
+# endif
+# endif
+
+# include "../state.h"
+# include "x86cpu.h"
+
+/*Converts the expression in the argument to a string.*/
+#define OC_M2STR(_s) #_s
+
+/*Memory operands do not always include an offset.
+ To avoid warnings, we force an offset with %H (which adds 8).*/
+# if __GNUC_PREREQ(4,0)
+# define OC_MEM_OFFS(_offs,_name) \
+ OC_M2STR(_offs-8+%H[_name])
+# endif
+/*If your gcc version does't support %H, then you get to suffer the warnings.
+ Note that Apple's gas breaks on things like _offs+(%esp): it throws away the
+ whole offset, instead of substituting in 0 for the missing operand to +.*/
+# if !defined(OC_MEM_OFFS)
+# define OC_MEM_OFFS(_offs,_name) \
+ OC_M2STR(_offs+%[_name])
+# endif
+
+/*Declare an array operand with an exact size.
+ This tells gcc we're going to clobber this memory region, without having to
+ clobber all of "memory" and lets us access local buffers directly using the
+ stack pointer, without allocating a separate register to point to them.*/
+#define OC_ARRAY_OPERAND(_type,_ptr,_size) \
+ (*({ \
+ struct{_type array_value__[(_size)];} *array_addr__=(void *)(_ptr); \
+ array_addr__; \
+ }))
+
+/*Declare an array operand with an exact size.
+ This tells gcc we're going to clobber this memory region, without having to
+ clobber all of "memory" and lets us access local buffers directly using the
+ stack pointer, without allocating a separate register to point to them.*/
+#define OC_CONST_ARRAY_OPERAND(_type,_ptr,_size) \
+ (*({ \
+ const struct{_type array_value__[(_size)];} *array_addr__= \
+ (const void *)(_ptr); \
+ array_addr__; \
+ }))
+
+extern const unsigned short __attribute__((aligned(16))) OC_IDCT_CONSTS[64];
+
+void oc_state_accel_init_x86(oc_theora_state *_state);
+
+void oc_frag_copy_mmx(unsigned char *_dst,
+ const unsigned char *_src,int _ystride);
+void oc_frag_copy_list_mmx(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+void oc_frag_recon_intra_mmx(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue);
+void oc_frag_recon_inter_mmx(unsigned char *_dst,
+ const unsigned char *_src,int _ystride,const ogg_int16_t *_residue);
+void oc_frag_recon_inter2_mmx(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue);
+void oc_idct8x8_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_idct8x8_sse2(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_state_frag_recon_mmx(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+void oc_loop_filter_init_mmx(signed char _bv[256],int _flimit);
+void oc_loop_filter_init_mmxext(signed char _bv[256],int _flimit);
+void oc_state_loop_filter_frag_rows_mmx(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end);
+void oc_state_loop_filter_frag_rows_mmxext(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end);
+void oc_restore_fpu_mmx(void);
+
+#endif
diff --git a/media/libtheora/lib/x86/x86state.c b/media/libtheora/lib/x86/x86state.c
new file mode 100644
index 000000000..a3d37267f
--- /dev/null
+++ b/media/libtheora/lib/x86/x86state.c
@@ -0,0 +1,95 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86state.c 17421 2010-09-22 16:46:18Z giles $
+
+ ********************************************************************/
+
+#include "x86int.h"
+
+#if defined(OC_X86_ASM)
+
+/*This table has been modified from OC_FZIG_ZAG by baking a 4x4 transpose into
+ each quadrant of the destination.*/
+static const unsigned char OC_FZIG_ZAG_MMX[128]={
+ 0, 8, 1, 2, 9,16,24,17,
+ 10, 3,32,11,18,25, 4,12,
+ 5,26,19,40,33,34,41,48,
+ 27, 6,13,20,28,21,14, 7,
+ 56,49,42,35,43,50,57,36,
+ 15,22,29,30,23,44,37,58,
+ 51,59,38,45,52,31,60,53,
+ 46,39,47,54,61,62,55,63,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64
+};
+
+/*This table has been modified from OC_FZIG_ZAG by baking an 8x8 transpose into
+ the destination.*/
+static const unsigned char OC_FZIG_ZAG_SSE2[128]={
+ 0, 8, 1, 2, 9,16,24,17,
+ 10, 3, 4,11,18,25,32,40,
+ 33,26,19,12, 5, 6,13,20,
+ 27,34,41,48,56,49,42,35,
+ 28,21,14, 7,15,22,29,36,
+ 43,50,57,58,51,44,37,30,
+ 23,31,38,45,52,59,60,53,
+ 46,39,47,54,61,62,55,63,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64
+};
+
+void oc_state_accel_init_x86(oc_theora_state *_state){
+ oc_state_accel_init_c(_state);
+ _state->cpu_flags=oc_cpu_flags_get();
+# if defined(OC_STATE_USE_VTABLE)
+ if(_state->cpu_flags&OC_CPU_X86_MMX){
+ _state->opt_vtable.frag_copy=oc_frag_copy_mmx;
+ _state->opt_vtable.frag_copy_list=oc_frag_copy_list_mmx;
+ _state->opt_vtable.frag_recon_intra=oc_frag_recon_intra_mmx;
+ _state->opt_vtable.frag_recon_inter=oc_frag_recon_inter_mmx;
+ _state->opt_vtable.frag_recon_inter2=oc_frag_recon_inter2_mmx;
+ _state->opt_vtable.idct8x8=oc_idct8x8_mmx;
+ _state->opt_vtable.state_frag_recon=oc_state_frag_recon_mmx;
+ _state->opt_vtable.loop_filter_init=oc_loop_filter_init_mmx;
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ oc_state_loop_filter_frag_rows_mmx;
+ _state->opt_vtable.restore_fpu=oc_restore_fpu_mmx;
+ _state->opt_data.dct_fzig_zag=OC_FZIG_ZAG_MMX;
+ }
+ if(_state->cpu_flags&OC_CPU_X86_MMXEXT){
+ _state->opt_vtable.loop_filter_init=oc_loop_filter_init_mmxext;
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ oc_state_loop_filter_frag_rows_mmxext;
+ }
+ if(_state->cpu_flags&OC_CPU_X86_SSE2){
+ _state->opt_vtable.idct8x8=oc_idct8x8_sse2;
+# endif
+ _state->opt_data.dct_fzig_zag=OC_FZIG_ZAG_SSE2;
+# if defined(OC_STATE_USE_VTABLE)
+ }
+# endif
+}
+#endif
diff --git a/media/libtheora/lib/x86_vc/mmxfrag.c b/media/libtheora/lib/x86_vc/mmxfrag.c
new file mode 100644
index 000000000..c16b026ff
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/mmxfrag.c
@@ -0,0 +1,416 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxfrag.c 17446 2010-09-23 20:06:20Z tterribe $
+
+ ********************************************************************/
+
+/*MMX acceleration of fragment reconstruction for motion compensation.
+ Originally written by Rudolf Marek.
+ Additional optimization by Nils Pipenbrinck.
+ Note: Loops are unrolled for best performance.
+ The iteration each instruction belongs to is marked in the comments as #i.*/
+#include <stddef.h>
+#include "x86int.h"
+
+#if defined(OC_X86_ASM)
+
+/*Copies an 8x8 block of pixels from _src to _dst, assuming _ystride bytes
+ between rows.*/
+# define OC_FRAG_COPY_MMX(_dst,_src,_ystride) \
+ do{ \
+ const unsigned char *src; \
+ unsigned char *dst; \
+ src=(_src); \
+ dst=(_dst); \
+ __asm mov SRC,src \
+ __asm mov DST,dst \
+ __asm mov YSTRIDE,_ystride \
+ /*src+0*ystride*/ \
+ __asm movq mm0,[SRC] \
+ /*src+1*ystride*/ \
+ __asm movq mm1,[SRC+YSTRIDE] \
+ /*ystride3=ystride*3*/ \
+ __asm lea YSTRIDE3,[YSTRIDE+YSTRIDE*2] \
+ /*src+2*ystride*/ \
+ __asm movq mm2,[SRC+YSTRIDE*2] \
+ /*src+3*ystride*/ \
+ __asm movq mm3,[SRC+YSTRIDE3] \
+ /*dst+0*ystride*/ \
+ __asm movq [DST],mm0 \
+ /*dst+1*ystride*/ \
+ __asm movq [DST+YSTRIDE],mm1 \
+ /*Pointer to next 4.*/ \
+ __asm lea SRC,[SRC+YSTRIDE*4] \
+ /*dst+2*ystride*/ \
+ __asm movq [DST+YSTRIDE*2],mm2 \
+ /*dst+3*ystride*/ \
+ __asm movq [DST+YSTRIDE3],mm3 \
+ /*Pointer to next 4.*/ \
+ __asm lea DST,[DST+YSTRIDE*4] \
+ /*src+0*ystride*/ \
+ __asm movq mm0,[SRC] \
+ /*src+1*ystride*/ \
+ __asm movq mm1,[SRC+YSTRIDE] \
+ /*src+2*ystride*/ \
+ __asm movq mm2,[SRC+YSTRIDE*2] \
+ /*src+3*ystride*/ \
+ __asm movq mm3,[SRC+YSTRIDE3] \
+ /*dst+0*ystride*/ \
+ __asm movq [DST],mm0 \
+ /*dst+1*ystride*/ \
+ __asm movq [DST+YSTRIDE],mm1 \
+ /*dst+2*ystride*/ \
+ __asm movq [DST+YSTRIDE*2],mm2 \
+ /*dst+3*ystride*/ \
+ __asm movq [DST+YSTRIDE3],mm3 \
+ } \
+ while(0)
+
+/*Copies an 8x8 block of pixels from _src to _dst, assuming _ystride bytes
+ between rows.*/
+void oc_frag_copy_mmx(unsigned char *_dst,
+ const unsigned char *_src,int _ystride){
+#define SRC edx
+#define DST eax
+#define YSTRIDE ecx
+#define YSTRIDE3 esi
+ OC_FRAG_COPY_MMX(_dst,_src,_ystride);
+#undef SRC
+#undef DST
+#undef YSTRIDE
+#undef YSTRIDE3
+}
+
+/*Copies the fragments specified by the lists of fragment indices from one
+ frame to another.
+ _dst_frame: The reference frame to copy to.
+ _src_frame: The reference frame to copy from.
+ _ystride: The row stride of the reference frames.
+ _fragis: A pointer to a list of fragment indices.
+ _nfragis: The number of fragment indices to copy.
+ _frag_buf_offs: The offsets of fragments in the reference frames.*/
+void oc_frag_copy_list_mmx(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){
+ ptrdiff_t fragii;
+ for(fragii=0;fragii<_nfragis;fragii++){
+ ptrdiff_t frag_buf_off;
+ frag_buf_off=_frag_buf_offs[_fragis[fragii]];
+#define SRC edx
+#define DST eax
+#define YSTRIDE ecx
+#define YSTRIDE3 edi
+ OC_FRAG_COPY_MMX(_dst_frame+frag_buf_off,
+ _src_frame+frag_buf_off,_ystride);
+#undef SRC
+#undef DST
+#undef YSTRIDE
+#undef YSTRIDE3
+ }
+}
+
+void oc_frag_recon_intra_mmx(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue){
+ __asm{
+#define DST edx
+#define DST4 esi
+#define YSTRIDE eax
+#define YSTRIDE3 edi
+#define RESIDUE ecx
+ mov DST,_dst
+ mov YSTRIDE,_ystride
+ mov RESIDUE,_residue
+ lea DST4,[DST+YSTRIDE*4]
+ lea YSTRIDE3,[YSTRIDE+YSTRIDE*2]
+ /*Set mm0 to 0xFFFFFFFFFFFFFFFF.*/
+ pcmpeqw mm0,mm0
+ /*#0 Load low residue.*/
+ movq mm1,[0*8+RESIDUE]
+ /*#0 Load high residue.*/
+ movq mm2,[1*8+RESIDUE]
+ /*Set mm0 to 0x8000800080008000.*/
+ psllw mm0,15
+ /*#1 Load low residue.*/
+ movq mm3,[2*8+RESIDUE]
+ /*#1 Load high residue.*/
+ movq mm4,[3*8+RESIDUE]
+ /*Set mm0 to 0x0080008000800080.*/
+ psrlw mm0,8
+ /*#2 Load low residue.*/
+ movq mm5,[4*8+RESIDUE]
+ /*#2 Load high residue.*/
+ movq mm6,[5*8+RESIDUE]
+ /*#0 Bias low residue.*/
+ paddsw mm1,mm0
+ /*#0 Bias high residue.*/
+ paddsw mm2,mm0
+ /*#0 Pack to byte.*/
+ packuswb mm1,mm2
+ /*#1 Bias low residue.*/
+ paddsw mm3,mm0
+ /*#1 Bias high residue.*/
+ paddsw mm4,mm0
+ /*#1 Pack to byte.*/
+ packuswb mm3,mm4
+ /*#2 Bias low residue.*/
+ paddsw mm5,mm0
+ /*#2 Bias high residue.*/
+ paddsw mm6,mm0
+ /*#2 Pack to byte.*/
+ packuswb mm5,mm6
+ /*#0 Write row.*/
+ movq [DST],mm1
+ /*#1 Write row.*/
+ movq [DST+YSTRIDE],mm3
+ /*#2 Write row.*/
+ movq [DST+YSTRIDE*2],mm5
+ /*#3 Load low residue.*/
+ movq mm1,[6*8+RESIDUE]
+ /*#3 Load high residue.*/
+ movq mm2,[7*8+RESIDUE]
+ /*#4 Load high residue.*/
+ movq mm3,[8*8+RESIDUE]
+ /*#4 Load high residue.*/
+ movq mm4,[9*8+RESIDUE]
+ /*#5 Load high residue.*/
+ movq mm5,[10*8+RESIDUE]
+ /*#5 Load high residue.*/
+ movq mm6,[11*8+RESIDUE]
+ /*#3 Bias low residue.*/
+ paddsw mm1,mm0
+ /*#3 Bias high residue.*/
+ paddsw mm2,mm0
+ /*#3 Pack to byte.*/
+ packuswb mm1,mm2
+ /*#4 Bias low residue.*/
+ paddsw mm3,mm0
+ /*#4 Bias high residue.*/
+ paddsw mm4,mm0
+ /*#4 Pack to byte.*/
+ packuswb mm3,mm4
+ /*#5 Bias low residue.*/
+ paddsw mm5,mm0
+ /*#5 Bias high residue.*/
+ paddsw mm6,mm0
+ /*#5 Pack to byte.*/
+ packuswb mm5,mm6
+ /*#3 Write row.*/
+ movq [DST+YSTRIDE3],mm1
+ /*#4 Write row.*/
+ movq [DST4],mm3
+ /*#5 Write row.*/
+ movq [DST4+YSTRIDE],mm5
+ /*#6 Load low residue.*/
+ movq mm1,[12*8+RESIDUE]
+ /*#6 Load high residue.*/
+ movq mm2,[13*8+RESIDUE]
+ /*#7 Load low residue.*/
+ movq mm3,[14*8+RESIDUE]
+ /*#7 Load high residue.*/
+ movq mm4,[15*8+RESIDUE]
+ /*#6 Bias low residue.*/
+ paddsw mm1,mm0
+ /*#6 Bias high residue.*/
+ paddsw mm2,mm0
+ /*#6 Pack to byte.*/
+ packuswb mm1,mm2
+ /*#7 Bias low residue.*/
+ paddsw mm3,mm0
+ /*#7 Bias high residue.*/
+ paddsw mm4,mm0
+ /*#7 Pack to byte.*/
+ packuswb mm3,mm4
+ /*#6 Write row.*/
+ movq [DST4+YSTRIDE*2],mm1
+ /*#7 Write row.*/
+ movq [DST4+YSTRIDE3],mm3
+#undef DST
+#undef DST4
+#undef YSTRIDE
+#undef YSTRIDE3
+#undef RESIDUE
+ }
+}
+
+void oc_frag_recon_inter_mmx(unsigned char *_dst,const unsigned char *_src,
+ int _ystride,const ogg_int16_t *_residue){
+ int i;
+ /*Zero mm0.*/
+ __asm pxor mm0,mm0;
+ for(i=4;i-->0;){
+ __asm{
+#define DST edx
+#define SRC ecx
+#define YSTRIDE edi
+#define RESIDUE eax
+ mov DST,_dst
+ mov SRC,_src
+ mov YSTRIDE,_ystride
+ mov RESIDUE,_residue
+ /*#0 Load source.*/
+ movq mm3,[SRC]
+ /*#1 Load source.*/
+ movq mm7,[SRC+YSTRIDE]
+ /*#0 Get copy of src.*/
+ movq mm4,mm3
+ /*#0 Expand high source.*/
+ punpckhbw mm4,mm0
+ /*#0 Expand low source.*/
+ punpcklbw mm3,mm0
+ /*#0 Add residue high.*/
+ paddsw mm4,[8+RESIDUE]
+ /*#1 Get copy of src.*/
+ movq mm2,mm7
+ /*#0 Add residue low.*/
+ paddsw mm3,[RESIDUE]
+ /*#1 Expand high source.*/
+ punpckhbw mm2,mm0
+ /*#0 Pack final row pixels.*/
+ packuswb mm3,mm4
+ /*#1 Expand low source.*/
+ punpcklbw mm7,mm0
+ /*#1 Add residue low.*/
+ paddsw mm7,[16+RESIDUE]
+ /*#1 Add residue high.*/
+ paddsw mm2,[24+RESIDUE]
+ /*Advance residue.*/
+ lea RESIDUE,[32+RESIDUE]
+ /*#1 Pack final row pixels.*/
+ packuswb mm7,mm2
+ /*Advance src.*/
+ lea SRC,[SRC+YSTRIDE*2]
+ /*#0 Write row.*/
+ movq [DST],mm3
+ /*#1 Write row.*/
+ movq [DST+YSTRIDE],mm7
+ /*Advance dst.*/
+ lea DST,[DST+YSTRIDE*2]
+ mov _residue,RESIDUE
+ mov _dst,DST
+ mov _src,SRC
+#undef DST
+#undef SRC
+#undef YSTRIDE
+#undef RESIDUE
+ }
+ }
+}
+
+void oc_frag_recon_inter2_mmx(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue){
+ int i;
+ /*Zero mm7.*/
+ __asm pxor mm7,mm7;
+ for(i=4;i-->0;){
+ __asm{
+#define SRC1 ecx
+#define SRC2 edi
+#define YSTRIDE esi
+#define RESIDUE edx
+#define DST eax
+ mov YSTRIDE,_ystride
+ mov DST,_dst
+ mov RESIDUE,_residue
+ mov SRC1,_src1
+ mov SRC2,_src2
+ /*#0 Load src1.*/
+ movq mm0,[SRC1]
+ /*#0 Load src2.*/
+ movq mm2,[SRC2]
+ /*#0 Copy src1.*/
+ movq mm1,mm0
+ /*#0 Copy src2.*/
+ movq mm3,mm2
+ /*#1 Load src1.*/
+ movq mm4,[SRC1+YSTRIDE]
+ /*#0 Unpack lower src1.*/
+ punpcklbw mm0,mm7
+ /*#1 Load src2.*/
+ movq mm5,[SRC2+YSTRIDE]
+ /*#0 Unpack higher src1.*/
+ punpckhbw mm1,mm7
+ /*#0 Unpack lower src2.*/
+ punpcklbw mm2,mm7
+ /*#0 Unpack higher src2.*/
+ punpckhbw mm3,mm7
+ /*Advance src1 ptr.*/
+ lea SRC1,[SRC1+YSTRIDE*2]
+ /*Advance src2 ptr.*/
+ lea SRC2,[SRC2+YSTRIDE*2]
+ /*#0 Lower src1+src2.*/
+ paddsw mm0,mm2
+ /*#0 Higher src1+src2.*/
+ paddsw mm1,mm3
+ /*#1 Copy src1.*/
+ movq mm2,mm4
+ /*#0 Build lo average.*/
+ psraw mm0,1
+ /*#1 Copy src2.*/
+ movq mm3,mm5
+ /*#1 Unpack lower src1.*/
+ punpcklbw mm4,mm7
+ /*#0 Build hi average.*/
+ psraw mm1,1
+ /*#1 Unpack higher src1.*/
+ punpckhbw mm2,mm7
+ /*#0 low+=residue.*/
+ paddsw mm0,[RESIDUE]
+ /*#1 Unpack lower src2.*/
+ punpcklbw mm5,mm7
+ /*#0 high+=residue.*/
+ paddsw mm1,[8+RESIDUE]
+ /*#1 Unpack higher src2.*/
+ punpckhbw mm3,mm7
+ /*#1 Lower src1+src2.*/
+ paddsw mm5,mm4
+ /*#0 Pack and saturate.*/
+ packuswb mm0,mm1
+ /*#1 Higher src1+src2.*/
+ paddsw mm3,mm2
+ /*#0 Write row.*/
+ movq [DST],mm0
+ /*#1 Build lo average.*/
+ psraw mm5,1
+ /*#1 Build hi average.*/
+ psraw mm3,1
+ /*#1 low+=residue.*/
+ paddsw mm5,[16+RESIDUE]
+ /*#1 high+=residue.*/
+ paddsw mm3,[24+RESIDUE]
+ /*#1 Pack and saturate.*/
+ packuswb mm5,mm3
+ /*#1 Write row ptr.*/
+ movq [DST+YSTRIDE],mm5
+ /*Advance residue ptr.*/
+ add RESIDUE,32
+ /*Advance dest ptr.*/
+ lea DST,[DST+YSTRIDE*2]
+ mov _dst,DST
+ mov _residue,RESIDUE
+ mov _src1,SRC1
+ mov _src2,SRC2
+#undef SRC1
+#undef SRC2
+#undef YSTRIDE
+#undef RESIDUE
+#undef DST
+ }
+ }
+}
+
+void oc_restore_fpu_mmx(void){
+ __asm emms;
+}
+
+#endif
diff --git a/media/libtheora/lib/x86_vc/mmxidct.c b/media/libtheora/lib/x86_vc/mmxidct.c
new file mode 100644
index 000000000..53a9ac7f3
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/mmxidct.c
@@ -0,0 +1,597 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxidct.c 17446 2010-09-23 20:06:20Z tterribe $
+
+ ********************************************************************/
+
+/*MMX acceleration of Theora's iDCT.
+ Originally written by Rudolf Marek, based on code from On2's VP3.*/
+#include "x86int.h"
+#include "../dct.h"
+
+#if defined(OC_X86_ASM)
+
+/*These are offsets into the table of constants below.*/
+/*7 rows of cosines, in order: pi/16 * (1 ... 7).*/
+#define OC_COSINE_OFFSET (8)
+/*A row of 8's.*/
+#define OC_EIGHT_OFFSET (0)
+
+
+
+/*A table of constants used by the MMX routines.*/
+static const OC_ALIGN16(ogg_uint16_t) OC_IDCT_CONSTS[(1+7)*4]={
+ 8, 8, 8, 8,
+ (ogg_uint16_t)OC_C1S7,(ogg_uint16_t)OC_C1S7,
+ (ogg_uint16_t)OC_C1S7,(ogg_uint16_t)OC_C1S7,
+ (ogg_uint16_t)OC_C2S6,(ogg_uint16_t)OC_C2S6,
+ (ogg_uint16_t)OC_C2S6,(ogg_uint16_t)OC_C2S6,
+ (ogg_uint16_t)OC_C3S5,(ogg_uint16_t)OC_C3S5,
+ (ogg_uint16_t)OC_C3S5,(ogg_uint16_t)OC_C3S5,
+ (ogg_uint16_t)OC_C4S4,(ogg_uint16_t)OC_C4S4,
+ (ogg_uint16_t)OC_C4S4,(ogg_uint16_t)OC_C4S4,
+ (ogg_uint16_t)OC_C5S3,(ogg_uint16_t)OC_C5S3,
+ (ogg_uint16_t)OC_C5S3,(ogg_uint16_t)OC_C5S3,
+ (ogg_uint16_t)OC_C6S2,(ogg_uint16_t)OC_C6S2,
+ (ogg_uint16_t)OC_C6S2,(ogg_uint16_t)OC_C6S2,
+ (ogg_uint16_t)OC_C7S1,(ogg_uint16_t)OC_C7S1,
+ (ogg_uint16_t)OC_C7S1,(ogg_uint16_t)OC_C7S1
+};
+
+/*38 cycles*/
+#define OC_IDCT_BEGIN(_y,_x) __asm{ \
+ __asm movq mm2,OC_I(3,_x) \
+ __asm movq mm6,OC_C(3) \
+ __asm movq mm4,mm2 \
+ __asm movq mm7,OC_J(5,_x) \
+ __asm pmulhw mm4,mm6 \
+ __asm movq mm1,OC_C(5) \
+ __asm pmulhw mm6,mm7 \
+ __asm movq mm5,mm1 \
+ __asm pmulhw mm1,mm2 \
+ __asm movq mm3,OC_I(1,_x) \
+ __asm pmulhw mm5,mm7 \
+ __asm movq mm0,OC_C(1) \
+ __asm paddw mm4,mm2 \
+ __asm paddw mm6,mm7 \
+ __asm paddw mm2,mm1 \
+ __asm movq mm1,OC_J(7,_x) \
+ __asm paddw mm7,mm5 \
+ __asm movq mm5,mm0 \
+ __asm pmulhw mm0,mm3 \
+ __asm paddw mm4,mm7 \
+ __asm pmulhw mm5,mm1 \
+ __asm movq mm7,OC_C(7) \
+ __asm psubw mm6,mm2 \
+ __asm paddw mm0,mm3 \
+ __asm pmulhw mm3,mm7 \
+ __asm movq mm2,OC_I(2,_x) \
+ __asm pmulhw mm7,mm1 \
+ __asm paddw mm5,mm1 \
+ __asm movq mm1,mm2 \
+ __asm pmulhw mm2,OC_C(2) \
+ __asm psubw mm3,mm5 \
+ __asm movq mm5,OC_J(6,_x) \
+ __asm paddw mm0,mm7 \
+ __asm movq mm7,mm5 \
+ __asm psubw mm0,mm4 \
+ __asm pmulhw mm5,OC_C(2) \
+ __asm paddw mm2,mm1 \
+ __asm pmulhw mm1,OC_C(6) \
+ __asm paddw mm4,mm4 \
+ __asm paddw mm4,mm0 \
+ __asm psubw mm3,mm6 \
+ __asm paddw mm5,mm7 \
+ __asm paddw mm6,mm6 \
+ __asm pmulhw mm7,OC_C(6) \
+ __asm paddw mm6,mm3 \
+ __asm movq OC_I(1,_y),mm4 \
+ __asm psubw mm1,mm5 \
+ __asm movq mm4,OC_C(4) \
+ __asm movq mm5,mm3 \
+ __asm pmulhw mm3,mm4 \
+ __asm paddw mm7,mm2 \
+ __asm movq OC_I(2,_y),mm6 \
+ __asm movq mm2,mm0 \
+ __asm movq mm6,OC_I(0,_x) \
+ __asm pmulhw mm0,mm4 \
+ __asm paddw mm5,mm3 \
+ __asm movq mm3,OC_J(4,_x) \
+ __asm psubw mm5,mm1 \
+ __asm paddw mm2,mm0 \
+ __asm psubw mm6,mm3 \
+ __asm movq mm0,mm6 \
+ __asm pmulhw mm6,mm4 \
+ __asm paddw mm3,mm3 \
+ __asm paddw mm1,mm1 \
+ __asm paddw mm3,mm0 \
+ __asm paddw mm1,mm5 \
+ __asm pmulhw mm4,mm3 \
+ __asm paddw mm6,mm0 \
+ __asm psubw mm6,mm2 \
+ __asm paddw mm2,mm2 \
+ __asm movq mm0,OC_I(1,_y) \
+ __asm paddw mm2,mm6 \
+ __asm paddw mm4,mm3 \
+ __asm psubw mm2,mm1 \
+}
+
+/*38+8=46 cycles.*/
+#define OC_ROW_IDCT(_y,_x) __asm{ \
+ OC_IDCT_BEGIN(_y,_x) \
+ /*r3=D'*/ \
+ __asm movq mm3,OC_I(2,_y) \
+ /*r4=E'=E-G*/ \
+ __asm psubw mm4,mm7 \
+ /*r1=H'+H'*/ \
+ __asm paddw mm1,mm1 \
+ /*r7=G+G*/ \
+ __asm paddw mm7,mm7 \
+ /*r1=R1=A''+H'*/ \
+ __asm paddw mm1,mm2 \
+ /*r7=G'=E+G*/ \
+ __asm paddw mm7,mm4 \
+ /*r4=R4=E'-D'*/ \
+ __asm psubw mm4,mm3 \
+ __asm paddw mm3,mm3 \
+ /*r6=R6=F'-B''*/ \
+ __asm psubw mm6,mm5 \
+ __asm paddw mm5,mm5 \
+ /*r3=R3=E'+D'*/ \
+ __asm paddw mm3,mm4 \
+ /*r5=R5=F'+B''*/ \
+ __asm paddw mm5,mm6 \
+ /*r7=R7=G'-C'*/ \
+ __asm psubw mm7,mm0 \
+ __asm paddw mm0,mm0 \
+ /*Save R1.*/ \
+ __asm movq OC_I(1,_y),mm1 \
+ /*r0=R0=G.+C.*/ \
+ __asm paddw mm0,mm7 \
+}
+
+/*The following macro does two 4x4 transposes in place.
+ At entry, we assume:
+ r0 = a3 a2 a1 a0
+ I(1) = b3 b2 b1 b0
+ r2 = c3 c2 c1 c0
+ r3 = d3 d2 d1 d0
+
+ r4 = e3 e2 e1 e0
+ r5 = f3 f2 f1 f0
+ r6 = g3 g2 g1 g0
+ r7 = h3 h2 h1 h0
+
+ At exit, we have:
+ I(0) = d0 c0 b0 a0
+ I(1) = d1 c1 b1 a1
+ I(2) = d2 c2 b2 a2
+ I(3) = d3 c3 b3 a3
+
+ J(4) = h0 g0 f0 e0
+ J(5) = h1 g1 f1 e1
+ J(6) = h2 g2 f2 e2
+ J(7) = h3 g3 f3 e3
+
+ I(0) I(1) I(2) I(3) is the transpose of r0 I(1) r2 r3.
+ J(4) J(5) J(6) J(7) is the transpose of r4 r5 r6 r7.
+
+ Since r1 is free at entry, we calculate the Js first.*/
+/*19 cycles.*/
+#define OC_TRANSPOSE(_y) __asm{ \
+ __asm movq mm1,mm4 \
+ __asm punpcklwd mm4,mm5 \
+ __asm movq OC_I(0,_y),mm0 \
+ __asm punpckhwd mm1,mm5 \
+ __asm movq mm0,mm6 \
+ __asm punpcklwd mm6,mm7 \
+ __asm movq mm5,mm4 \
+ __asm punpckldq mm4,mm6 \
+ __asm punpckhdq mm5,mm6 \
+ __asm movq mm6,mm1 \
+ __asm movq OC_J(4,_y),mm4 \
+ __asm punpckhwd mm0,mm7 \
+ __asm movq OC_J(5,_y),mm5 \
+ __asm punpckhdq mm6,mm0 \
+ __asm movq mm4,OC_I(0,_y) \
+ __asm punpckldq mm1,mm0 \
+ __asm movq mm5,OC_I(1,_y) \
+ __asm movq mm0,mm4 \
+ __asm movq OC_J(7,_y),mm6 \
+ __asm punpcklwd mm0,mm5 \
+ __asm movq OC_J(6,_y),mm1 \
+ __asm punpckhwd mm4,mm5 \
+ __asm movq mm5,mm2 \
+ __asm punpcklwd mm2,mm3 \
+ __asm movq mm1,mm0 \
+ __asm punpckldq mm0,mm2 \
+ __asm punpckhdq mm1,mm2 \
+ __asm movq mm2,mm4 \
+ __asm movq OC_I(0,_y),mm0 \
+ __asm punpckhwd mm5,mm3 \
+ __asm movq OC_I(1,_y),mm1 \
+ __asm punpckhdq mm4,mm5 \
+ __asm punpckldq mm2,mm5 \
+ __asm movq OC_I(3,_y),mm4 \
+ __asm movq OC_I(2,_y),mm2 \
+}
+
+/*38+19=57 cycles.*/
+#define OC_COLUMN_IDCT(_y) __asm{ \
+ OC_IDCT_BEGIN(_y,_y) \
+ __asm paddw mm2,OC_8 \
+ /*r1=H'+H'*/ \
+ __asm paddw mm1,mm1 \
+ /*r1=R1=A''+H'*/ \
+ __asm paddw mm1,mm2 \
+ /*r2=NR2*/ \
+ __asm psraw mm2,4 \
+ /*r4=E'=E-G*/ \
+ __asm psubw mm4,mm7 \
+ /*r1=NR1*/ \
+ __asm psraw mm1,4 \
+ /*r3=D'*/ \
+ __asm movq mm3,OC_I(2,_y) \
+ /*r7=G+G*/ \
+ __asm paddw mm7,mm7 \
+ /*Store NR2 at I(2).*/ \
+ __asm movq OC_I(2,_y),mm2 \
+ /*r7=G'=E+G*/ \
+ __asm paddw mm7,mm4 \
+ /*Store NR1 at I(1).*/ \
+ __asm movq OC_I(1,_y),mm1 \
+ /*r4=R4=E'-D'*/ \
+ __asm psubw mm4,mm3 \
+ __asm paddw mm4,OC_8 \
+ /*r3=D'+D'*/ \
+ __asm paddw mm3,mm3 \
+ /*r3=R3=E'+D'*/ \
+ __asm paddw mm3,mm4 \
+ /*r4=NR4*/ \
+ __asm psraw mm4,4 \
+ /*r6=R6=F'-B''*/ \
+ __asm psubw mm6,mm5 \
+ /*r3=NR3*/ \
+ __asm psraw mm3,4 \
+ __asm paddw mm6,OC_8 \
+ /*r5=B''+B''*/ \
+ __asm paddw mm5,mm5 \
+ /*r5=R5=F'+B''*/ \
+ __asm paddw mm5,mm6 \
+ /*r6=NR6*/ \
+ __asm psraw mm6,4 \
+ /*Store NR4 at J(4).*/ \
+ __asm movq OC_J(4,_y),mm4 \
+ /*r5=NR5*/ \
+ __asm psraw mm5,4 \
+ /*Store NR3 at I(3).*/ \
+ __asm movq OC_I(3,_y),mm3 \
+ /*r7=R7=G'-C'*/ \
+ __asm psubw mm7,mm0 \
+ __asm paddw mm7,OC_8 \
+ /*r0=C'+C'*/ \
+ __asm paddw mm0,mm0 \
+ /*r0=R0=G'+C'*/ \
+ __asm paddw mm0,mm7 \
+ /*r7=NR7*/ \
+ __asm psraw mm7,4 \
+ /*Store NR6 at J(6).*/ \
+ __asm movq OC_J(6,_y),mm6 \
+ /*r0=NR0*/ \
+ __asm psraw mm0,4 \
+ /*Store NR5 at J(5).*/ \
+ __asm movq OC_J(5,_y),mm5 \
+ /*Store NR7 at J(7).*/ \
+ __asm movq OC_J(7,_y),mm7 \
+ /*Store NR0 at I(0).*/ \
+ __asm movq OC_I(0,_y),mm0 \
+}
+
+#define OC_MID(_m,_i) [CONSTS+_m+(_i)*8]
+#define OC_C(_i) OC_MID(OC_COSINE_OFFSET,_i-1)
+#define OC_8 OC_MID(OC_EIGHT_OFFSET,0)
+
+static void oc_idct8x8_slow(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ int i;
+ /*This routine accepts an 8x8 matrix, but in partially transposed form.
+ Every 4x4 block is transposed.*/
+ __asm{
+#define CONSTS eax
+#define Y edx
+#define X ecx
+ mov CONSTS,offset OC_IDCT_CONSTS
+ mov Y,_y
+ mov X,_x
+#define OC_I(_k,_y) [(_y)+(_k)*16]
+#define OC_J(_k,_y) [(_y)+((_k)-4)*16+8]
+ OC_ROW_IDCT(Y,X)
+ OC_TRANSPOSE(Y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) [(_y)+(_k)*16+64]
+#define OC_J(_k,_y) [(_y)+((_k)-4)*16+72]
+ OC_ROW_IDCT(Y,X)
+ OC_TRANSPOSE(Y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) [(_y)+(_k)*16]
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT(Y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) [(_y)+(_k)*16+8]
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT(Y)
+#undef OC_I
+#undef OC_J
+#undef CONSTS
+#undef Y
+#undef X
+ }
+ if(_x!=_y){
+ int i;
+ __asm pxor mm0,mm0;
+ for(i=0;i<4;i++){
+ ogg_int16_t *x;
+ x=_x+16*i;
+#define X ecx
+ __asm{
+ mov X,x
+ movq [X+0x00],mm0
+ movq [X+0x08],mm0
+ movq [X+0x10],mm0
+ movq [X+0x18],mm0
+ }
+#undef X
+ }
+ }
+}
+
+/*25 cycles.*/
+#define OC_IDCT_BEGIN_10(_y,_x) __asm{ \
+ __asm movq mm2,OC_I(3,_x) \
+ __asm nop \
+ __asm movq mm6,OC_C(3) \
+ __asm movq mm4,mm2 \
+ __asm movq mm1,OC_C(5) \
+ __asm pmulhw mm4,mm6 \
+ __asm movq mm3,OC_I(1,_x) \
+ __asm pmulhw mm1,mm2 \
+ __asm movq mm0,OC_C(1) \
+ __asm paddw mm4,mm2 \
+ __asm pxor mm6,mm6 \
+ __asm paddw mm2,mm1 \
+ __asm movq mm5,OC_I(2,_x) \
+ __asm pmulhw mm0,mm3 \
+ __asm movq mm1,mm5 \
+ __asm paddw mm0,mm3 \
+ __asm pmulhw mm3,OC_C(7) \
+ __asm psubw mm6,mm2 \
+ __asm pmulhw mm5,OC_C(2) \
+ __asm psubw mm0,mm4 \
+ __asm movq mm7,OC_I(2,_x) \
+ __asm paddw mm4,mm4 \
+ __asm paddw mm7,mm5 \
+ __asm paddw mm4,mm0 \
+ __asm pmulhw mm1,OC_C(6) \
+ __asm psubw mm3,mm6 \
+ __asm movq OC_I(1,_y),mm4 \
+ __asm paddw mm6,mm6 \
+ __asm movq mm4,OC_C(4) \
+ __asm paddw mm6,mm3 \
+ __asm movq mm5,mm3 \
+ __asm pmulhw mm3,mm4 \
+ __asm movq OC_I(2,_y),mm6 \
+ __asm movq mm2,mm0 \
+ __asm movq mm6,OC_I(0,_x) \
+ __asm pmulhw mm0,mm4 \
+ __asm paddw mm5,mm3 \
+ __asm paddw mm2,mm0 \
+ __asm psubw mm5,mm1 \
+ __asm pmulhw mm6,mm4 \
+ __asm paddw mm6,OC_I(0,_x) \
+ __asm paddw mm1,mm1 \
+ __asm movq mm4,mm6 \
+ __asm paddw mm1,mm5 \
+ __asm psubw mm6,mm2 \
+ __asm paddw mm2,mm2 \
+ __asm movq mm0,OC_I(1,_y) \
+ __asm paddw mm2,mm6 \
+ __asm psubw mm2,mm1 \
+ __asm nop \
+}
+
+/*25+8=33 cycles.*/
+#define OC_ROW_IDCT_10(_y,_x) __asm{ \
+ OC_IDCT_BEGIN_10(_y,_x) \
+ /*r3=D'*/ \
+ __asm movq mm3,OC_I(2,_y) \
+ /*r4=E'=E-G*/ \
+ __asm psubw mm4,mm7 \
+ /*r1=H'+H'*/ \
+ __asm paddw mm1,mm1 \
+ /*r7=G+G*/ \
+ __asm paddw mm7,mm7 \
+ /*r1=R1=A''+H'*/ \
+ __asm paddw mm1,mm2 \
+ /*r7=G'=E+G*/ \
+ __asm paddw mm7,mm4 \
+ /*r4=R4=E'-D'*/ \
+ __asm psubw mm4,mm3 \
+ __asm paddw mm3,mm3 \
+ /*r6=R6=F'-B''*/ \
+ __asm psubw mm6,mm5 \
+ __asm paddw mm5,mm5 \
+ /*r3=R3=E'+D'*/ \
+ __asm paddw mm3,mm4 \
+ /*r5=R5=F'+B''*/ \
+ __asm paddw mm5,mm6 \
+ /*r7=R7=G'-C'*/ \
+ __asm psubw mm7,mm0 \
+ __asm paddw mm0,mm0 \
+ /*Save R1.*/ \
+ __asm movq OC_I(1,_y),mm1 \
+ /*r0=R0=G'+C'*/ \
+ __asm paddw mm0,mm7 \
+}
+
+/*25+19=44 cycles'*/
+#define OC_COLUMN_IDCT_10(_y) __asm{ \
+ OC_IDCT_BEGIN_10(_y,_y) \
+ __asm paddw mm2,OC_8 \
+ /*r1=H'+H'*/ \
+ __asm paddw mm1,mm1 \
+ /*r1=R1=A''+H'*/ \
+ __asm paddw mm1,mm2 \
+ /*r2=NR2*/ \
+ __asm psraw mm2,4 \
+ /*r4=E'=E-G*/ \
+ __asm psubw mm4,mm7 \
+ /*r1=NR1*/ \
+ __asm psraw mm1,4 \
+ /*r3=D'*/ \
+ __asm movq mm3,OC_I(2,_y) \
+ /*r7=G+G*/ \
+ __asm paddw mm7,mm7 \
+ /*Store NR2 at I(2).*/ \
+ __asm movq OC_I(2,_y),mm2 \
+ /*r7=G'=E+G*/ \
+ __asm paddw mm7,mm4 \
+ /*Store NR1 at I(1).*/ \
+ __asm movq OC_I(1,_y),mm1 \
+ /*r4=R4=E'-D'*/ \
+ __asm psubw mm4,mm3 \
+ __asm paddw mm4,OC_8 \
+ /*r3=D'+D'*/ \
+ __asm paddw mm3,mm3 \
+ /*r3=R3=E'+D'*/ \
+ __asm paddw mm3,mm4 \
+ /*r4=NR4*/ \
+ __asm psraw mm4,4 \
+ /*r6=R6=F'-B''*/ \
+ __asm psubw mm6,mm5 \
+ /*r3=NR3*/ \
+ __asm psraw mm3,4 \
+ __asm paddw mm6,OC_8 \
+ /*r5=B''+B''*/ \
+ __asm paddw mm5,mm5 \
+ /*r5=R5=F'+B''*/ \
+ __asm paddw mm5,mm6 \
+ /*r6=NR6*/ \
+ __asm psraw mm6,4 \
+ /*Store NR4 at J(4).*/ \
+ __asm movq OC_J(4,_y),mm4 \
+ /*r5=NR5*/ \
+ __asm psraw mm5,4 \
+ /*Store NR3 at I(3).*/ \
+ __asm movq OC_I(3,_y),mm3 \
+ /*r7=R7=G'-C'*/ \
+ __asm psubw mm7,mm0 \
+ __asm paddw mm7,OC_8 \
+ /*r0=C'+C'*/ \
+ __asm paddw mm0,mm0 \
+ /*r0=R0=G'+C'*/ \
+ __asm paddw mm0,mm7 \
+ /*r7=NR7*/ \
+ __asm psraw mm7,4 \
+ /*Store NR6 at J(6).*/ \
+ __asm movq OC_J(6,_y),mm6 \
+ /*r0=NR0*/ \
+ __asm psraw mm0,4 \
+ /*Store NR5 at J(5).*/ \
+ __asm movq OC_J(5,_y),mm5 \
+ /*Store NR7 at J(7).*/ \
+ __asm movq OC_J(7,_y),mm7 \
+ /*Store NR0 at I(0).*/ \
+ __asm movq OC_I(0,_y),mm0 \
+}
+
+static void oc_idct8x8_10(ogg_int16_t _y[64],ogg_int16_t _x[64]){
+ __asm{
+#define CONSTS eax
+#define Y edx
+#define X ecx
+ mov CONSTS,offset OC_IDCT_CONSTS
+ mov Y,_y
+ mov X,_x
+#define OC_I(_k,_y) [(_y)+(_k)*16]
+#define OC_J(_k,_y) [(_y)+((_k)-4)*16+8]
+ /*Done with dequant, descramble, and partial transpose.
+ Now do the iDCT itself.*/
+ OC_ROW_IDCT_10(Y,X)
+ OC_TRANSPOSE(Y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) [(_y)+(_k)*16]
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT_10(Y)
+#undef OC_I
+#undef OC_J
+#define OC_I(_k,_y) [(_y)+(_k)*16+8]
+#define OC_J(_k,_y) OC_I(_k,_y)
+ OC_COLUMN_IDCT_10(Y)
+#undef OC_I
+#undef OC_J
+#undef CONSTS
+#undef Y
+#undef X
+ }
+ if(_x!=_y){
+#define X ecx
+ __asm{
+ pxor mm0,mm0;
+ mov X,_x
+ movq [X+0x00],mm0
+ movq [X+0x10],mm0
+ movq [X+0x20],mm0
+ movq [X+0x30],mm0
+ }
+#undef X
+ }
+}
+
+/*Performs an inverse 8x8 Type-II DCT transform.
+ The input is assumed to be scaled by a factor of 4 relative to orthonormal
+ version of the transform.*/
+void oc_idct8x8_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi){
+ /*_last_zzi is subtly different from an actual count of the number of
+ coefficients we decoded for this block.
+ It contains the value of zzi BEFORE the final token in the block was
+ decoded.
+ In most cases this is an EOB token (the continuation of an EOB run from a
+ previous block counts), and so this is the same as the coefficient count.
+ However, in the case that the last token was NOT an EOB token, but filled
+ the block up with exactly 64 coefficients, _last_zzi will be less than 64.
+ Provided the last token was not a pure zero run, the minimum value it can
+ be is 46, and so that doesn't affect any of the cases in this routine.
+ However, if the last token WAS a pure zero run of length 63, then _last_zzi
+ will be 1 while the number of coefficients decoded is 64.
+ Thus, we will trigger the following special case, where the real
+ coefficient count would not.
+ Note also that a zero run of length 64 will give _last_zzi a value of 0,
+ but we still process the DC coefficient, which might have a non-zero value
+ due to DC prediction.
+ Although convoluted, this is arguably the correct behavior: it allows us to
+ use a smaller transform when the block ends with a long zero run instead
+ of a normal EOB token.
+ It could be smarter... multiple separate zero runs at the end of a block
+ will fool it, but an encoder that generates these really deserves what it
+ gets.
+ Needless to say we inherited this approach from VP3.*/
+ /*Perform the iDCT.*/
+ if(_last_zzi<=10)oc_idct8x8_10(_y,_x);
+ else oc_idct8x8_slow(_y,_x);
+}
+
+#endif
diff --git a/media/libtheora/lib/x86_vc/mmxloop.h b/media/libtheora/lib/x86_vc/mmxloop.h
new file mode 100644
index 000000000..2561fca2a
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/mmxloop.h
@@ -0,0 +1,219 @@
+#if !defined(_x86_vc_mmxloop_H)
+# define _x86_vc_mmxloop_H (1)
+# include <stddef.h>
+# include "x86int.h"
+
+#if defined(OC_X86_ASM)
+
+/*On entry, mm0={a0,...,a7}, mm1={b0,...,b7}, mm2={c0,...,c7}, mm3={d0,...d7}.
+ On exit, mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)} and
+ mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}; mm0 and mm3 are clobbered.*/
+#define OC_LOOP_FILTER8_MMX __asm{ \
+ /*mm7=0*/ \
+ __asm pxor mm7,mm7 \
+ /*mm6:mm0={a0,...,a7}*/ \
+ __asm movq mm6,mm0 \
+ __asm punpcklbw mm0,mm7 \
+ __asm punpckhbw mm6,mm7 \
+ /*mm3:mm5={d0,...,d7}*/ \
+ __asm movq mm5,mm3 \
+ __asm punpcklbw mm3,mm7 \
+ __asm punpckhbw mm5,mm7 \
+ /*mm6:mm0={a0-d0,...,a7-d7}*/ \
+ __asm psubw mm0,mm3 \
+ __asm psubw mm6,mm5 \
+ /*mm3:mm1={b0,...,b7}*/ \
+ __asm movq mm3,mm1 \
+ __asm punpcklbw mm1,mm7 \
+ __asm movq mm4,mm2 \
+ __asm punpckhbw mm3,mm7 \
+ /*mm5:mm4={c0,...,c7}*/ \
+ __asm movq mm5,mm2 \
+ __asm punpcklbw mm4,mm7 \
+ __asm punpckhbw mm5,mm7 \
+ /*mm7={3}x4 \
+ mm5:mm4={c0-b0,...,c7-b7}*/ \
+ __asm pcmpeqw mm7,mm7 \
+ __asm psubw mm4,mm1 \
+ __asm psrlw mm7,14 \
+ __asm psubw mm5,mm3 \
+ /*Scale by 3.*/ \
+ __asm pmullw mm4,mm7 \
+ __asm pmullw mm5,mm7 \
+ /*mm7={4}x4 \
+ mm5:mm4=f={a0-d0+3*(c0-b0),...,a7-d7+3*(c7-b7)}*/ \
+ __asm psrlw mm7,1 \
+ __asm paddw mm4,mm0 \
+ __asm psllw mm7,2 \
+ __asm movq mm0,[LL] \
+ __asm paddw mm5,mm6 \
+ /*R_i has the range [-127,128], so we compute -R_i instead. \
+ mm4=-R_i=-(f+4>>3)=0xFF^(f-4>>3)*/ \
+ __asm psubw mm4,mm7 \
+ __asm psubw mm5,mm7 \
+ __asm psraw mm4,3 \
+ __asm psraw mm5,3 \
+ __asm pcmpeqb mm7,mm7 \
+ __asm packsswb mm4,mm5 \
+ __asm pxor mm6,mm6 \
+ __asm pxor mm4,mm7 \
+ __asm packuswb mm1,mm3 \
+ /*Now compute lflim of -mm4 cf. Section 7.10 of the sepc.*/ \
+ /*There's no unsigned byte+signed byte with unsigned saturation op code, so \
+ we have to split things by sign (the other option is to work in 16 bits, \
+ but working in 8 bits gives much better parallelism). \
+ We compute abs(R_i), but save a mask of which terms were negative in mm6. \
+ Then we compute mm4=abs(lflim(R_i,L))=min(abs(R_i),max(2*L-abs(R_i),0)). \
+ Finally, we split mm4 into positive and negative pieces using the mask in \
+ mm6, and add and subtract them as appropriate.*/ \
+ /*mm4=abs(-R_i)*/ \
+ /*mm7=255-2*L*/ \
+ __asm pcmpgtb mm6,mm4 \
+ __asm psubb mm7,mm0 \
+ __asm pxor mm4,mm6 \
+ __asm psubb mm7,mm0 \
+ __asm psubb mm4,mm6 \
+ /*mm7=255-max(2*L-abs(R_i),0)*/ \
+ __asm paddusb mm7,mm4 \
+ /*mm4=min(abs(R_i),max(2*L-abs(R_i),0))*/ \
+ __asm paddusb mm4,mm7 \
+ __asm psubusb mm4,mm7 \
+ /*Now split mm4 by the original sign of -R_i.*/ \
+ __asm movq mm5,mm4 \
+ __asm pand mm4,mm6 \
+ __asm pandn mm6,mm5 \
+ /*mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)}*/ \
+ /*mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}*/ \
+ __asm paddusb mm1,mm4 \
+ __asm psubusb mm2,mm4 \
+ __asm psubusb mm1,mm6 \
+ __asm paddusb mm2,mm6 \
+}
+
+#define OC_LOOP_FILTER_V_MMX(_pix,_ystride,_ll) \
+ do{ \
+ /*Used local variable pix__ in order to fix compilation errors like: \
+ "error C2425: 'SHL' : non-constant expression in 'second operand'".*/ \
+ unsigned char *pix__; \
+ unsigned char *ll__; \
+ ll__=(_ll); \
+ pix__=(_pix); \
+ __asm mov YSTRIDE,_ystride \
+ __asm mov LL,ll__ \
+ __asm mov PIX,pix__ \
+ __asm sub PIX,YSTRIDE \
+ __asm sub PIX,YSTRIDE \
+ /*mm0={a0,...,a7}*/ \
+ __asm movq mm0,[PIX] \
+ /*ystride3=_ystride*3*/ \
+ __asm lea YSTRIDE3,[YSTRIDE+YSTRIDE*2] \
+ /*mm3={d0,...,d7}*/ \
+ __asm movq mm3,[PIX+YSTRIDE3] \
+ /*mm1={b0,...,b7}*/ \
+ __asm movq mm1,[PIX+YSTRIDE] \
+ /*mm2={c0,...,c7}*/ \
+ __asm movq mm2,[PIX+YSTRIDE*2] \
+ OC_LOOP_FILTER8_MMX \
+ /*Write it back out.*/ \
+ __asm movq [PIX+YSTRIDE],mm1 \
+ __asm movq [PIX+YSTRIDE*2],mm2 \
+ } \
+ while(0)
+
+#define OC_LOOP_FILTER_H_MMX(_pix,_ystride,_ll) \
+ do{ \
+ /*Used local variable ll__ in order to fix compilation errors like: \
+ "error C2443: operand size conflict".*/ \
+ unsigned char *ll__; \
+ unsigned char *pix__; \
+ ll__=(_ll); \
+ pix__=(_pix)-2; \
+ __asm mov PIX,pix__ \
+ __asm mov YSTRIDE,_ystride \
+ __asm mov LL,ll__ \
+ /*x x x x d0 c0 b0 a0*/ \
+ __asm movd mm0,[PIX] \
+ /*x x x x d1 c1 b1 a1*/ \
+ __asm movd mm1,[PIX+YSTRIDE] \
+ /*ystride3=_ystride*3*/ \
+ __asm lea YSTRIDE3,[YSTRIDE+YSTRIDE*2] \
+ /*x x x x d2 c2 b2 a2*/ \
+ __asm movd mm2,[PIX+YSTRIDE*2] \
+ /*x x x x d3 c3 b3 a3*/ \
+ __asm lea D,[PIX+YSTRIDE*4] \
+ __asm movd mm3,[PIX+YSTRIDE3] \
+ /*x x x x d4 c4 b4 a4*/ \
+ __asm movd mm4,[D] \
+ /*x x x x d5 c5 b5 a5*/ \
+ __asm movd mm5,[D+YSTRIDE] \
+ /*x x x x d6 c6 b6 a6*/ \
+ __asm movd mm6,[D+YSTRIDE*2] \
+ /*x x x x d7 c7 b7 a7*/ \
+ __asm movd mm7,[D+YSTRIDE3] \
+ /*mm0=d1 d0 c1 c0 b1 b0 a1 a0*/ \
+ __asm punpcklbw mm0,mm1 \
+ /*mm2=d3 d2 c3 c2 b3 b2 a3 a2*/ \
+ __asm punpcklbw mm2,mm3 \
+ /*mm3=d1 d0 c1 c0 b1 b0 a1 a0*/ \
+ __asm movq mm3,mm0 \
+ /*mm0=b3 b2 b1 b0 a3 a2 a1 a0*/ \
+ __asm punpcklwd mm0,mm2 \
+ /*mm3=d3 d2 d1 d0 c3 c2 c1 c0*/ \
+ __asm punpckhwd mm3,mm2 \
+ /*mm1=b3 b2 b1 b0 a3 a2 a1 a0*/ \
+ __asm movq mm1,mm0 \
+ /*mm4=d5 d4 c5 c4 b5 b4 a5 a4*/ \
+ __asm punpcklbw mm4,mm5 \
+ /*mm6=d7 d6 c7 c6 b7 b6 a7 a6*/ \
+ __asm punpcklbw mm6,mm7 \
+ /*mm5=d5 d4 c5 c4 b5 b4 a5 a4*/ \
+ __asm movq mm5,mm4 \
+ /*mm4=b7 b6 b5 b4 a7 a6 a5 a4*/ \
+ __asm punpcklwd mm4,mm6 \
+ /*mm5=d7 d6 d5 d4 c7 c6 c5 c4*/ \
+ __asm punpckhwd mm5,mm6 \
+ /*mm2=d3 d2 d1 d0 c3 c2 c1 c0*/ \
+ __asm movq mm2,mm3 \
+ /*mm0=a7 a6 a5 a4 a3 a2 a1 a0*/ \
+ __asm punpckldq mm0,mm4 \
+ /*mm1=b7 b6 b5 b4 b3 b2 b1 b0*/ \
+ __asm punpckhdq mm1,mm4 \
+ /*mm2=c7 c6 c5 c4 c3 c2 c1 c0*/ \
+ __asm punpckldq mm2,mm5 \
+ /*mm3=d7 d6 d5 d4 d3 d2 d1 d0*/ \
+ __asm punpckhdq mm3,mm5 \
+ OC_LOOP_FILTER8_MMX \
+ /*mm2={b0+R_0'',...,b7+R_7''}*/ \
+ __asm movq mm0,mm1 \
+ /*mm1={b0+R_0'',c0-R_0'',...,b3+R_3'',c3-R_3''}*/ \
+ __asm punpcklbw mm1,mm2 \
+ /*mm2={b4+R_4'',c4-R_4'',...,b7+R_7'',c7-R_7''}*/ \
+ __asm punpckhbw mm0,mm2 \
+ /*[d]=c1 b1 c0 b0*/ \
+ __asm movd D,mm1 \
+ __asm mov [PIX+1],D_WORD \
+ __asm psrlq mm1,32 \
+ __asm shr D,16 \
+ __asm mov [PIX+YSTRIDE+1],D_WORD \
+ /*[d]=c3 b3 c2 b2*/ \
+ __asm movd D,mm1 \
+ __asm mov [PIX+YSTRIDE*2+1],D_WORD \
+ __asm shr D,16 \
+ __asm mov [PIX+YSTRIDE3+1],D_WORD \
+ __asm lea PIX,[PIX+YSTRIDE*4] \
+ /*[d]=c5 b5 c4 b4*/ \
+ __asm movd D,mm0 \
+ __asm mov [PIX+1],D_WORD \
+ __asm psrlq mm0,32 \
+ __asm shr D,16 \
+ __asm mov [PIX+YSTRIDE+1],D_WORD \
+ /*[d]=c7 b7 c6 b6*/ \
+ __asm movd D,mm0 \
+ __asm mov [PIX+YSTRIDE*2+1],D_WORD \
+ __asm shr D,16 \
+ __asm mov [PIX+YSTRIDE3+1],D_WORD \
+ } \
+ while(0)
+
+# endif
+#endif
diff --git a/media/libtheora/lib/x86_vc/mmxstate.c b/media/libtheora/lib/x86_vc/mmxstate.c
new file mode 100644
index 000000000..d3d468d5f
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/mmxstate.c
@@ -0,0 +1,176 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: mmxstate.c 17563 2010-10-25 17:40:54Z tterribe $
+
+ ********************************************************************/
+
+/*MMX acceleration of complete fragment reconstruction algorithm.
+ Originally written by Rudolf Marek.*/
+#include <string.h>
+#include "x86int.h"
+#include "mmxloop.h"
+
+#if defined(OC_X86_ASM)
+
+void oc_state_frag_recon_mmx(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant){
+ unsigned char *dst;
+ ptrdiff_t frag_buf_off;
+ int ystride;
+ int refi;
+ /*Apply the inverse transform.*/
+ /*Special case only having a DC component.*/
+ if(_last_zzi<2){
+ /*Note that this value must be unsigned, to keep the __asm__ block from
+ sign-extending it when it puts it in a register.*/
+ ogg_uint16_t p;
+ /*We round this dequant product (and not any of the others) because there's
+ no iDCT rounding.*/
+ p=(ogg_int16_t)(_dct_coeffs[0]*(ogg_int32_t)_dc_quant+15>>5);
+ /*Fill _dct_coeffs with p.*/
+ __asm{
+#define Y eax
+#define P ecx
+ mov Y,_dct_coeffs
+ movzx P,p
+ lea Y,[Y+128]
+ /*mm0=0000 0000 0000 AAAA*/
+ movd mm0,P
+ /*mm0=0000 0000 AAAA AAAA*/
+ punpcklwd mm0,mm0
+ /*mm0=AAAA AAAA AAAA AAAA*/
+ punpckldq mm0,mm0
+ movq [Y],mm0
+ movq [8+Y],mm0
+ movq [16+Y],mm0
+ movq [24+Y],mm0
+ movq [32+Y],mm0
+ movq [40+Y],mm0
+ movq [48+Y],mm0
+ movq [56+Y],mm0
+ movq [64+Y],mm0
+ movq [72+Y],mm0
+ movq [80+Y],mm0
+ movq [88+Y],mm0
+ movq [96+Y],mm0
+ movq [104+Y],mm0
+ movq [112+Y],mm0
+ movq [120+Y],mm0
+#undef Y
+#undef P
+ }
+ }
+ else{
+ /*Dequantize the DC coefficient.*/
+ _dct_coeffs[0]=(ogg_int16_t)(_dct_coeffs[0]*(int)_dc_quant);
+ oc_idct8x8_mmx(_dct_coeffs+64,_dct_coeffs,_last_zzi);
+ }
+ /*Fill in the target buffer.*/
+ frag_buf_off=_state->frag_buf_offs[_fragi];
+ refi=_state->frags[_fragi].refi;
+ ystride=_state->ref_ystride[_pli];
+ dst=_state->ref_frame_data[OC_FRAME_SELF]+frag_buf_off;
+ if(refi==OC_FRAME_SELF)oc_frag_recon_intra_mmx(dst,ystride,_dct_coeffs+64);
+ else{
+ const unsigned char *ref;
+ int mvoffsets[2];
+ ref=_state->ref_frame_data[refi]+frag_buf_off;
+ if(oc_state_get_mv_offsets(_state,mvoffsets,_pli,
+ _state->frag_mvs[_fragi])>1){
+ oc_frag_recon_inter2_mmx(dst,ref+mvoffsets[0],ref+mvoffsets[1],ystride,
+ _dct_coeffs+64);
+ }
+ else oc_frag_recon_inter_mmx(dst,ref+mvoffsets[0],ystride,_dct_coeffs+64);
+ }
+}
+
+/*We copy these entire function to inline the actual MMX routines so that we
+ use only a single indirect call.*/
+
+void oc_loop_filter_init_mmx(signed char _bv[256],int _flimit){
+ memset(_bv,~(_flimit<<1),8);
+}
+
+/*Apply the loop filter to a given set of fragment rows in the given plane.
+ The filter may be run on the bottom edge, affecting pixels in the next row of
+ fragments, so this row also needs to be available.
+ _bv: The bounding values array.
+ _refi: The index of the frame buffer to filter.
+ _pli: The color plane to filter.
+ _fragy0: The Y coordinate of the first fragment row to filter.
+ _fragy_end: The Y coordinate of the fragment row to stop filtering at.*/
+void oc_state_loop_filter_frag_rows_mmx(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end){
+ const oc_fragment_plane *fplane;
+ const oc_fragment *frags;
+ const ptrdiff_t *frag_buf_offs;
+ unsigned char *ref_frame_data;
+ ptrdiff_t fragi_top;
+ ptrdiff_t fragi_bot;
+ ptrdiff_t fragi0;
+ ptrdiff_t fragi0_end;
+ int ystride;
+ int nhfrags;
+ fplane=_state->fplanes+_pli;
+ nhfrags=fplane->nhfrags;
+ fragi_top=fplane->froffset;
+ fragi_bot=fragi_top+fplane->nfrags;
+ fragi0=fragi_top+_fragy0*(ptrdiff_t)nhfrags;
+ fragi0_end=fragi_top+_fragy_end*(ptrdiff_t)nhfrags;
+ ystride=_state->ref_ystride[_pli];
+ frags=_state->frags;
+ frag_buf_offs=_state->frag_buf_offs;
+ ref_frame_data=_state->ref_frame_data[_refi];
+ /*The following loops are constructed somewhat non-intuitively on purpose.
+ The main idea is: if a block boundary has at least one coded fragment on
+ it, the filter is applied to it.
+ However, the order that the filters are applied in matters, and VP3 chose
+ the somewhat strange ordering used below.*/
+ while(fragi0<fragi0_end){
+ ptrdiff_t fragi;
+ ptrdiff_t fragi_end;
+ fragi=fragi0;
+ fragi_end=fragi+nhfrags;
+ while(fragi<fragi_end){
+ if(frags[fragi].coded){
+ unsigned char *ref;
+ ref=ref_frame_data+frag_buf_offs[fragi];
+#define PIX eax
+#define YSTRIDE3 edi
+#define YSTRIDE ecx
+#define LL edx
+#define D esi
+#define D_WORD si
+ if(fragi>fragi0)OC_LOOP_FILTER_H_MMX(ref,ystride,_bv);
+ if(fragi0>fragi_top)OC_LOOP_FILTER_V_MMX(ref,ystride,_bv);
+ if(fragi+1<fragi_end&&!frags[fragi+1].coded){
+ OC_LOOP_FILTER_H_MMX(ref+8,ystride,_bv);
+ }
+ if(fragi+nhfrags<fragi_bot&&!frags[fragi+nhfrags].coded){
+ OC_LOOP_FILTER_V_MMX(ref+(ystride<<3),ystride,_bv);
+ }
+#undef PIX
+#undef YSTRIDE3
+#undef YSTRIDE
+#undef LL
+#undef D
+#undef D_WORD
+ }
+ fragi++;
+ }
+ fragi0+=nhfrags;
+ }
+}
+
+#endif
diff --git a/media/libtheora/lib/x86_vc/x86cpu.c b/media/libtheora/lib/x86_vc/x86cpu.c
new file mode 100644
index 000000000..41f4bcba9
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/x86cpu.c
@@ -0,0 +1,192 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ CPU capability detection for x86 processors.
+ Originally written by Rudolf Marek.
+
+ function:
+ last mod: $Id: x86cpu.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#include "x86cpu.h"
+
+#if !defined(OC_X86_ASM)
+ogg_uint32_t oc_cpu_flags_get(void){
+ return 0;
+}
+#else
+/*Why does MSVC need this complicated rigamarole?
+ At this point I honestly do not care.*/
+
+/*Visual C cpuid helper function.
+ For VS2005 we could as well use the _cpuid builtin, but that wouldn't work
+ for VS2003 users, so we do it in inline assembler.*/
+static void oc_cpuid_helper(ogg_uint32_t _cpu_info[4],ogg_uint32_t _op){
+ _asm{
+ mov eax,[_op]
+ mov esi,_cpu_info
+ cpuid
+ mov [esi+0],eax
+ mov [esi+4],ebx
+ mov [esi+8],ecx
+ mov [esi+12],edx
+ }
+}
+
+# define cpuid(_op,_eax,_ebx,_ecx,_edx) \
+ do{ \
+ ogg_uint32_t cpu_info[4]; \
+ oc_cpuid_helper(cpu_info,_op); \
+ (_eax)=cpu_info[0]; \
+ (_ebx)=cpu_info[1]; \
+ (_ecx)=cpu_info[2]; \
+ (_edx)=cpu_info[3]; \
+ }while(0)
+
+static void oc_detect_cpuid_helper(ogg_uint32_t *_eax,ogg_uint32_t *_ebx){
+ _asm{
+ pushfd
+ pushfd
+ pop eax
+ mov ebx,eax
+ xor eax,200000h
+ push eax
+ popfd
+ pushfd
+ pop eax
+ popfd
+ mov ecx,_eax
+ mov [ecx],eax
+ mov ecx,_ebx
+ mov [ecx],ebx
+ }
+}
+
+static ogg_uint32_t oc_parse_intel_flags(ogg_uint32_t _edx,ogg_uint32_t _ecx){
+ ogg_uint32_t flags;
+ /*If there isn't even MMX, give up.*/
+ if(!(_edx&0x00800000))return 0;
+ flags=OC_CPU_X86_MMX;
+ if(_edx&0x02000000)flags|=OC_CPU_X86_MMXEXT|OC_CPU_X86_SSE;
+ if(_edx&0x04000000)flags|=OC_CPU_X86_SSE2;
+ if(_ecx&0x00000001)flags|=OC_CPU_X86_PNI;
+ if(_ecx&0x00000100)flags|=OC_CPU_X86_SSSE3;
+ if(_ecx&0x00080000)flags|=OC_CPU_X86_SSE4_1;
+ if(_ecx&0x00100000)flags|=OC_CPU_X86_SSE4_2;
+ return flags;
+}
+
+static ogg_uint32_t oc_parse_amd_flags(ogg_uint32_t _edx,ogg_uint32_t _ecx){
+ ogg_uint32_t flags;
+ /*If there isn't even MMX, give up.*/
+ if(!(_edx&0x00800000))return 0;
+ flags=OC_CPU_X86_MMX;
+ if(_edx&0x00400000)flags|=OC_CPU_X86_MMXEXT;
+ if(_edx&0x80000000)flags|=OC_CPU_X86_3DNOW;
+ if(_edx&0x40000000)flags|=OC_CPU_X86_3DNOWEXT;
+ if(_ecx&0x00000040)flags|=OC_CPU_X86_SSE4A;
+ if(_ecx&0x00000800)flags|=OC_CPU_X86_SSE5;
+ return flags;
+}
+
+ogg_uint32_t oc_cpu_flags_get(void){
+ ogg_uint32_t flags;
+ ogg_uint32_t eax;
+ ogg_uint32_t ebx;
+ ogg_uint32_t ecx;
+ ogg_uint32_t edx;
+# if !defined(__amd64__)&&!defined(__x86_64__)
+ /*Not all x86-32 chips support cpuid, so we have to check.*/
+ oc_detect_cpuid_helper(&eax,&ebx);
+ /*No cpuid.*/
+ if(eax==ebx)return 0;
+# endif
+ cpuid(0,eax,ebx,ecx,edx);
+ /* l e t n I e n i u n e G*/
+ if(ecx==0x6C65746E&&edx==0x49656E69&&ebx==0x756E6547||
+ /* 6 8 x M T e n i u n e G*/
+ ecx==0x3638784D&&edx==0x54656E69&&ebx==0x756E6547){
+ int family;
+ int model;
+ /*Intel, Transmeta (tested with Crusoe TM5800):*/
+ cpuid(1,eax,ebx,ecx,edx);
+ flags=oc_parse_intel_flags(edx,ecx);
+ family=(eax>>8)&0xF;
+ model=(eax>>4)&0xF;
+ /*The SSE unit on the Pentium M and Core Duo is much slower than the MMX
+ unit, so don't use it.*/
+ if(family==6&&(model==9||model==13||model==14)){
+ flags&=~(OC_CPU_X86_SSE2|OC_CPU_X86_PNI);
+ }
+ }
+ /* D M A c i t n e h t u A*/
+ else if(ecx==0x444D4163&&edx==0x69746E65&&ebx==0x68747541||
+ /* C S N y b e d o e G*/
+ ecx==0x43534e20&&edx==0x79622065&&ebx==0x646f6547){
+ /*AMD, Geode:*/
+ cpuid(0x80000000,eax,ebx,ecx,edx);
+ if(eax<0x80000001)flags=0;
+ else{
+ cpuid(0x80000001,eax,ebx,ecx,edx);
+ flags=oc_parse_amd_flags(edx,ecx);
+ }
+ /*Also check for SSE.*/
+ cpuid(1,eax,ebx,ecx,edx);
+ flags|=oc_parse_intel_flags(edx,ecx);
+ }
+ /*Technically some VIA chips can be configured in the BIOS to return any
+ string here the user wants.
+ There is a special detection method that can be used to identify such
+ processors, but in my opinion, if the user really wants to change it, they
+ deserve what they get.*/
+ /* s l u a H r u a t n e C*/
+ else if(ecx==0x736C7561&&edx==0x48727561&&ebx==0x746E6543){
+ /*VIA:*/
+ /*I only have documentation for the C7 (Esther) and Isaiah (forthcoming)
+ chips (thanks to the engineers from Centaur Technology who provided it).
+ These chips support Intel-like cpuid info.
+ The C3-2 (Nehemiah) cores appear to, as well.*/
+ cpuid(1,eax,ebx,ecx,edx);
+ flags=oc_parse_intel_flags(edx,ecx);
+ if(eax>=0x80000001){
+ /*The (non-Nehemiah) C3 processors support AMD-like cpuid info.
+ We need to check this even if the Intel test succeeds to pick up 3DNow!
+ support on these processors.
+ Unlike actual AMD processors, we cannot _rely_ on this info, since
+ some cores (e.g., the 693 stepping of the Nehemiah) claim to support
+ this function, yet return edx=0, despite the Intel test indicating
+ MMX support.
+ Therefore the features detected here are strictly added to those
+ detected by the Intel test.*/
+ /*TODO: How about earlier chips?*/
+ cpuid(0x80000001,eax,ebx,ecx,edx);
+ /*Note: As of the C7, this function returns Intel-style extended feature
+ flags, not AMD-style.
+ Currently, this only defines bits 11, 20, and 29 (0x20100800), which
+ do not conflict with any of the AMD flags we inspect.
+ For the remaining bits, Intel tells us, "Do not count on their value",
+ but VIA assures us that they will all be zero (at least on the C7 and
+ Isaiah chips).
+ In the (unlikely) event a future processor uses bits 18, 19, 30, or 31
+ (0xC0C00000) for something else, we will have to add code to detect
+ the model to decide when it is appropriate to inspect them.*/
+ flags|=oc_parse_amd_flags(edx,ecx);
+ }
+ }
+ else{
+ /*Implement me.*/
+ flags=0;
+ }
+ return flags;
+}
+#endif
diff --git a/media/libtheora/lib/x86_vc/x86cpu.h b/media/libtheora/lib/x86_vc/x86cpu.h
new file mode 100644
index 000000000..327d93246
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/x86cpu.h
@@ -0,0 +1,36 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+ function:
+ last mod: $Id: x86cpu.h 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_x86_vc_x86cpu_H)
+# define _x86_vc_x86cpu_H (1)
+#include "../internal.h"
+
+#define OC_CPU_X86_MMX (1<<0)
+#define OC_CPU_X86_3DNOW (1<<1)
+#define OC_CPU_X86_3DNOWEXT (1<<2)
+#define OC_CPU_X86_MMXEXT (1<<3)
+#define OC_CPU_X86_SSE (1<<4)
+#define OC_CPU_X86_SSE2 (1<<5)
+#define OC_CPU_X86_PNI (1<<6)
+#define OC_CPU_X86_SSSE3 (1<<7)
+#define OC_CPU_X86_SSE4_1 (1<<8)
+#define OC_CPU_X86_SSE4_2 (1<<9)
+#define OC_CPU_X86_SSE4A (1<<10)
+#define OC_CPU_X86_SSE5 (1<<11)
+
+ogg_uint32_t oc_cpu_flags_get(void);
+
+#endif
diff --git a/media/libtheora/lib/x86_vc/x86int.h b/media/libtheora/lib/x86_vc/x86int.h
new file mode 100644
index 000000000..bc4c54a2f
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/x86int.h
@@ -0,0 +1,49 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86int.h 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#if !defined(_x86_vc_x86int_H)
+# define _x86_vc_x86int_H (1)
+# include "../internal.h"
+# if defined(OC_X86_ASM)
+# define oc_state_accel_init oc_state_accel_init_x86
+# define OC_STATE_USE_VTABLE (1)
+# endif
+# include "../state.h"
+# include "x86cpu.h"
+
+void oc_state_accel_init_x86(oc_theora_state *_state);
+
+void oc_frag_copy_mmx(unsigned char *_dst,
+ const unsigned char *_src,int _ystride);
+void oc_frag_copy_list_mmx(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs);
+void oc_frag_recon_intra_mmx(unsigned char *_dst,int _ystride,
+ const ogg_int16_t *_residue);
+void oc_frag_recon_inter_mmx(unsigned char *_dst,
+ const unsigned char *_src,int _ystride,const ogg_int16_t *_residue);
+void oc_frag_recon_inter2_mmx(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t *_residue);
+void oc_idct8x8_mmx(ogg_int16_t _y[64],ogg_int16_t _x[64],int _last_zzi);
+void oc_state_frag_recon_mmx(const oc_theora_state *_state,ptrdiff_t _fragi,
+ int _pli,ogg_int16_t _dct_coeffs[128],int _last_zzi,ogg_uint16_t _dc_quant);
+void oc_loop_filter_init_mmx(signed char _bv[256],int _flimit);
+void oc_state_loop_filter_frag_rows_mmx(const oc_theora_state *_state,
+ signed char _bv[256],int _refi,int _pli,int _fragy0,int _fragy_end);
+void oc_restore_fpu_mmx(void);
+
+#endif
diff --git a/media/libtheora/lib/x86_vc/x86state.c b/media/libtheora/lib/x86_vc/x86state.c
new file mode 100644
index 000000000..7aa73deae
--- /dev/null
+++ b/media/libtheora/lib/x86_vc/x86state.c
@@ -0,0 +1,61 @@
+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009 *
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function:
+ last mod: $Id: x86state.c 17410 2010-09-21 21:53:48Z tterribe $
+
+ ********************************************************************/
+
+#include "x86int.h"
+
+#if defined(OC_X86_ASM)
+
+/*This table has been modified from OC_FZIG_ZAG by baking a 4x4 transpose into
+ each quadrant of the destination.*/
+static const unsigned char OC_FZIG_ZAG_MMX[128]={
+ 0, 8, 1, 2, 9,16,24,17,
+ 10, 3,32,11,18,25, 4,12,
+ 5,26,19,40,33,34,41,48,
+ 27, 6,13,20,28,21,14, 7,
+ 56,49,42,35,43,50,57,36,
+ 15,22,29,30,23,44,37,58,
+ 51,59,38,45,52,31,60,53,
+ 46,39,47,54,61,62,55,63,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+ 64,64,64,64,64,64,64,64,
+};
+
+void oc_state_accel_init_x86(oc_theora_state *_state){
+ _state->cpu_flags=oc_cpu_flags_get();
+ if(_state->cpu_flags&OC_CPU_X86_MMX){
+ _state->opt_vtable.frag_copy=oc_frag_copy_mmx;
+ _state->opt_vtable.frag_copy_list=oc_frag_copy_list_mmx;
+ _state->opt_vtable.frag_recon_intra=oc_frag_recon_intra_mmx;
+ _state->opt_vtable.frag_recon_inter=oc_frag_recon_inter_mmx;
+ _state->opt_vtable.frag_recon_inter2=oc_frag_recon_inter2_mmx;
+ _state->opt_vtable.idct8x8=oc_idct8x8_mmx;
+ _state->opt_vtable.state_frag_recon=oc_state_frag_recon_mmx;
+ _state->opt_vtable.loop_filter_init=oc_loop_filter_init_mmx;
+ _state->opt_vtable.state_loop_filter_frag_rows=
+ oc_state_loop_filter_frag_rows_mmx;
+ _state->opt_vtable.restore_fpu=oc_restore_fpu_mmx;
+ _state->opt_data.dct_fzig_zag=OC_FZIG_ZAG_MMX;
+ }
+ else oc_state_accel_init_c(_state);
+}
+#endif
diff --git a/media/libtheora/moz.build b/media/libtheora/moz.build
new file mode 100644
index 000000000..c7f85eebf
--- /dev/null
+++ b/media/libtheora/moz.build
@@ -0,0 +1,117 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+with Files('*'):
+ BUG_COMPONENT = ('Core', 'Video/Audio')
+
+EXPORTS.theora += [
+ 'include/theora/codec.h',
+ 'include/theora/theoradec.h',
+ 'include/theora/theoraenc.h',
+]
+
+# We allow warnings for third-party code that can be updated from upstream.
+ALLOW_COMPILER_WARNINGS = True
+
+FINAL_LIBRARY = 'gkmedias'
+
+# The encoder is currently not included.
+DEFINES['THEORA_DISABLE_ENCODE'] = True
+
+# Suppress warnings in third-party code.
+if CONFIG['GNU_CC'] or CONFIG['CLANG_CL']:
+ CFLAGS += ['-Wno-type-limits']
+if CONFIG['CLANG_CXX'] or CONFIG['CLANG_CL']:
+ CFLAGS += ['-Wno-tautological-compare']
+if CONFIG['CLANG_CL']:
+ CFLAGS += [
+ '-Wno-pointer-sign',
+ '-Wno-shift-op-parentheses',
+ ]
+
+UNIFIED_SOURCES += [
+ 'lib/apiwrapper.c',
+ 'lib/bitpack.c',
+ 'lib/decapiwrapper.c',
+ 'lib/decinfo.c',
+ 'lib/decode.c',
+ 'lib/dequant.c',
+ 'lib/fragment.c',
+ 'lib/huffdec.c',
+ 'lib/idct.c',
+ 'lib/info.c',
+ 'lib/internal.c',
+ 'lib/quant.c',
+ 'lib/state.c',
+]
+
+LOCAL_INCLUDES += ['include']
+
+if '86' in CONFIG['OS_TEST']:
+ if CONFIG['OS_ARCH'] != 'SunOS':
+ if CONFIG['CLANG_CL']:
+ # clang-cl can't handle libtheora's inline asm.
+ pass
+ elif CONFIG['OS_ARCH'] != 'WINNT' or CONFIG['OS_TEST'] != 'x86_64':
+ DEFINES['OC_X86_ASM'] = True
+ if '64' in CONFIG['OS_TEST']:
+ DEFINES['OC_X86_64_ASM'] = True
+ if CONFIG['_MSC_VER']:
+ if CONFIG['CLANG_CL']:
+ # clang-cl can't handle libtheora's inline asm.
+ pass
+ elif '64' not in CONFIG['OS_TEST']:
+ SOURCES += [
+ 'lib/x86_vc/mmxfrag.c',
+ 'lib/x86_vc/mmxidct.c',
+ 'lib/x86_vc/mmxstate.c',
+ 'lib/x86_vc/x86cpu.c',
+ 'lib/x86_vc/x86state.c',
+ ]
+ else:
+ SOURCES += [
+ 'lib/x86/mmxfrag.c',
+ 'lib/x86/mmxidct.c',
+ 'lib/x86/mmxstate.c',
+ 'lib/x86/sse2idct.c',
+ 'lib/x86/x86cpu.c',
+ 'lib/x86/x86state.c',
+ ]
+
+if CONFIG['GNU_AS']:
+ if 'arm' in CONFIG['OS_TEST']:
+ SOURCES += [
+ 'lib/arm/armcpu.c',
+ 'lib/arm/armstate.c',
+ ]
+ for var in ('OC_ARM_ASM',
+ 'OC_ARM_ASM_EDSP',
+ 'OC_ARM_ASM_MEDIA',
+ 'OC_ARM_ASM_NEON'):
+ DEFINES[var] = True
+ # The Android NDK doesn't pre-define anything to indicate the OS it's
+ # on, so do it for them.
+ if CONFIG['OS_TARGET'] == 'Android':
+ DEFINES['__linux__'] = True
+
+ SOURCES += [ '!%s.s' % f for f in [
+ 'armbits-gnu',
+ 'armfrag-gnu',
+ 'armidct-gnu',
+ 'armloop-gnu',
+ ]]
+
+ # These flags are a lie; they're just used to enable the requisite
+ # opcodes; actual arch detection is done at runtime.
+ ASFLAGS += [
+ '-march=armv7-a',
+ ]
+ ASFLAGS += CONFIG['NEON_FLAGS']
+
+ if CONFIG['CLANG_CXX']:
+ ASFLAGS += [
+ '-no-integrated-as',
+ ]
diff --git a/media/libtheora/update.sh b/media/libtheora/update.sh
new file mode 100644
index 000000000..e1a95425a
--- /dev/null
+++ b/media/libtheora/update.sh
@@ -0,0 +1,86 @@
+# Usage: ./update.sh <theora_src_directory>
+#
+# Copies the needed files from a directory containing the original
+# libtheora source that we need for the Mozilla HTML5 media support.
+sed \
+ -e s/\#define\ OC_X86_ASM//g \
+ -e s/\#define\ OC_X86_64_ASM//g \
+ -e s/\#define\ OC_ARM_ASM_EDSP\ 1//g \
+ -e s/\#define\ OC_ARM_ASM_MEDIA\ 1//g \
+ -e s/\#define\ OC_ARM_ASM_NEON\ 1//g \
+ -e s/\#define\ OC_ARM_ASM//g \
+ -e s/\#define\ THEORA_DISABLE_ENCODE//g \
+ $1/config.h > lib/config.h
+sed \
+ -e s/@HAVE_ARM_ASM_EDSP@/1/g \
+ -e s/@HAVE_ARM_ASM_MEDIA@/1/g \
+ -e s/@HAVE_ARM_ASM_NEON@/1/g \
+ $1/lib/arm/armopts.s.in > lib/arm/armopts.s
+cp $1/LICENSE ./LICENSE
+cp $1/CHANGES ./CHANGES
+cp $1/COPYING ./COPYING
+cp $1/README ./README
+cp $1/AUTHORS ./AUTHORS
+cp $1/lib/apiwrapper.c ./lib/
+cp $1/lib/apiwrapper.h ./lib/
+cp $1/lib/bitpack.c ./lib/
+cp $1/lib/bitpack.h ./lib/
+cp $1/lib/dct.h ./lib/
+cp $1/lib/decapiwrapper.c ./lib/
+cp $1/lib/decinfo.c ./lib/
+cp $1/lib/decint.h ./lib/
+cp $1/lib/decode.c ./lib/
+cp $1/lib/dequant.c ./lib/
+cp $1/lib/dequant.h ./lib/
+cp $1/lib/fragment.c ./lib/
+cp $1/lib/huffdec.c ./lib/
+cp $1/lib/huffdec.h ./lib/
+cp $1/lib/huffman.h ./lib/
+cp $1/lib/idct.c ./lib/
+cp $1/lib/info.c ./lib/
+cp $1/lib/internal.c ./lib/
+cp $1/lib/internal.h ./lib/
+cp $1/lib/mathops.h ./lib/
+cp $1/lib/ocintrin.h ./lib/
+cp $1/lib/quant.c ./lib/
+cp $1/lib/quant.h ./lib/
+cp $1/lib/state.c ./lib/
+cp $1/lib/state.h ./lib/
+cp $1/lib/arm/arm2gnu.pl ./lib/arm/
+cp $1/lib/arm/armbits.h ./lib/arm/
+cp $1/lib/arm/armbits.s ./lib/arm/
+cp $1/lib/arm/armcpu.c ./lib/arm/
+cp $1/lib/arm/armcpu.h ./lib/arm/
+cp $1/lib/arm/armfrag.s ./lib/arm/
+cp $1/lib/arm/armidct.s ./lib/arm/
+cp $1/lib/arm/armint.h ./lib/arm/
+cp $1/lib/arm/armloop.s ./lib/arm/
+cp $1/lib/arm/armstate.c ./lib/arm/
+cp $1/lib/x86/mmxfrag.c ./lib/x86/
+cp $1/lib/x86/mmxidct.c ./lib/x86/
+cp $1/lib/x86/mmxloop.h ./lib/x86/
+cp $1/lib/x86/mmxstate.c ./lib/x86/
+cp $1/lib/x86/sse2idct.c ./lib/x86/
+cp $1/lib/x86/sse2trans.h ./lib/x86/
+cp $1/lib/x86/x86cpu.c ./lib/x86/
+cp $1/lib/x86/x86cpu.h ./lib/x86/
+cp $1/lib/x86/x86int.h ./lib/x86/
+cp $1/lib/x86/x86state.c ./lib/x86/
+cp $1/lib/x86_vc/mmxfrag.c ./lib/x86_vc/
+cp $1/lib/x86_vc/mmxidct.c ./lib/x86_vc/
+cp $1/lib/x86_vc/mmxloop.h ./lib/x86_vc/
+cp $1/lib/x86_vc/mmxstate.c ./lib/x86_vc/
+cp $1/lib/x86_vc/x86cpu.c ./lib/x86_vc/
+cp $1/lib/x86_vc/x86cpu.h ./lib/x86_vc/
+cp $1/lib/x86_vc/x86int.h ./lib/x86_vc/
+cp $1/lib/x86_vc/x86state.c ./lib/x86_vc/
+cp $1/include/theora/theora.h ./include/theora/theora.h
+cp $1/include/theora/theoradec.h ./include/theora/theoradec.h
+cp $1/include/theora/theoraenc.h ./include/theora/theoraenc.h
+cp $1/include/theora/codec.h ./include/theora/codec.h
+patch -p3 < ./bug625773-r17780.patch
+patch -p3 < ./bug468275-r18219.patch
+patch -p3 < ./bug752139-r18031.patch
+patch -p3 < ./bug752668-r18268.patch
+patch -p3 < ./bug703135.patch
+patch -p3 < ./bug920992.patch