Port the libvpx mozbuild generator to aom

This is a port of the libvpx scripts, themselves a port of Chromium's scripts to generate an external build description using hooks in the upstream configure and make scripts. The libaom library is a fork of libvpx so we can use a similar approach.

The upstream source is located in $(topsrc_dir)/third_party/aom but the build description and any patches are under the media directory with the other codecs, similar to how zlib works. Config files and headers generated by the upstream build system are also under $(topsrc_dir)/media/libaom/.

1 files changed, 123 insertions, 0 deletions

diff --git a/media/libaom/moz.build b/media/libaom/moz.build
new file mode 100644
index 000000000..2efe9eeb8
--- /dev/null
+++ b/media/libaom/moz.build
@@ -0,0 +1,123 @@
+# -*- 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', 'Audio/Video')
+
+include('sources.mozbuild')
+
+# Linux, Mac and Win share file lists for x86* but not configurations.
+if CONFIG['CPU_ARCH'] == 'x86_64':
+    EXPORTS.aom += files['X64_EXPORTS']
+    SOURCES += files['X64_SOURCES']
+    if CONFIG['OS_TARGET'] == 'WINNT':
+        ASFLAGS += [ '-I%s/media/libaom/config/win/x64/' % TOPSRCDIR ]
+        CFLAGS += [ '-I%s/media/libaom/config/win/x64/' % TOPSRCDIR ]
+    elif CONFIG['OS_TARGET'] == 'Darwin':
+        ASFLAGS += [ '-I%s/media/libaom/config/mac/x64/' % TOPSRCDIR ]
+        CFLAGS += [ '-I%s/media/libaom/config/mac/x64/' % TOPSRCDIR ]
+    else: # Android, Linux, BSDs, etc.
+        ASFLAGS += [ '-I%s/media/libaom/config/linux/x64/' % TOPSRCDIR ]
+        CFLAGS += [ '-I%s/media/libaom/config/linux/x64/' % TOPSRCDIR ]
+elif CONFIG['CPU_ARCH'] == 'x86':
+    EXPORTS.aom += files['IA32_EXPORTS']
+    SOURCES += files['IA32_SOURCES']
+    if CONFIG['OS_TARGET'] == 'WINNT':
+        ASFLAGS += [ '-I%s/media/libaom/config/win/ia32/' % TOPSRCDIR ]
+        CFLAGS += [ '-I%s/media/libaom/config/win/ia32/' % TOPSRCDIR ]
+    elif CONFIG['OS_TARGET'] == 'Darwin':
+        ASFLAGS += [ '-I%s/media/libaom/config/mac/ia32/' % TOPSRCDIR ]
+        CFLAGS += [ '-I%s/media/libaom/config/mac/ia32/' % TOPSRCDIR ]
+    else: # Android, Linux, BSDs, etc.
+        ASFLAGS += [ '-I%s/media/libaom/config/linux/ia32/' % TOPSRCDIR ]
+        CFLAGS += [ '-I%s/media/libaom/config/linux/ia32/' % TOPSRCDIR ]
+elif CONFIG['CPU_ARCH'] == 'arm':
+    EXPORTS.aom += files['ARM_EXPORTS']
+    ASFLAGS += [
+        '-I%s/media/libaom/config/linux/arm/' % TOPSRCDIR,
+        '-I%s/libaom' % OBJDIR,
+    ]
+    CFLAGS += [ '-I%s/media/libaom/config/linux/arm/' % TOPSRCDIR ]
+
+    arm_asm_files = files['ARM_SOURCES']
+
+    if CONFIG['VPX_AS_CONVERSION']:
+        SOURCES += sorted([
+            "!%s.S" % f if f.endswith('.asm') else f for f in arm_asm_files
+        ])
+    else:
+        SOURCES += sorted(arm_asm_files)
+
+    for f in SOURCES:
+        if f.endswith('neon.c'):
+            SOURCES[f].flags += CONFIG['VPX_ASFLAGS']
+
+    if CONFIG['OS_TARGET'] == 'Android':
+        # For cpu-features.h
+        LOCAL_INCLUDES += [
+            '%%%s/sources/android/cpufeatures' % CONFIG['ANDROID_NDK'],
+        ]
+    if CONFIG['CLANG_CXX']:
+        ASFLAGS += [
+            '-no-integrated-as',
+        ]
+else:
+    # Generic C-only configuration
+    EXPORTS.aom += files['GENERIC_EXPORTS']
+    SOURCES += files['GENERIC_SOURCES']
+    ASFLAGS += [ '-I%s/media/libaom/config/generic/' % TOPSRCDIR ]
+    CFLAGS += [ '-I%s/media/libaom/config/generic/' % TOPSRCDIR ]
+
+# We allow warnings for third-party code that can be updated from upstream.
+ALLOW_COMPILER_WARNINGS = True
+
+FINAL_LIBRARY = 'gkmedias'
+
+if CONFIG['OS_TARGET'] == 'Android':
+    # Older versions of the Android NDK don't pre-define anything to indicate
+    # the OS they're on, so do it for them.
+    DEFINES['__linux__'] = True
+
+    if not CONFIG['MOZ_WEBRTC']:
+        SOURCES += [
+            '%%%s/sources/android/cpufeatures/cpu-features.c' % CONFIG['ANDROID_NDK'],
+        ]
+
+if CONFIG['CLANG_CL'] or not CONFIG['_MSC_VER']:
+    for f in SOURCES:
+        if f.endswith('sse2.c'):
+            SOURCES[f].flags += CONFIG['SSE2_FLAGS']
+        elif f.endswith('ssse3.c'):
+            SOURCES[f].flags += ['-mssse3']
+        elif f.endswith('sse4.c'):
+            SOURCES[f].flags += ['-msse4.1']
+        elif f.endswith('avx.c'):
+            SOURCES[f].flags += ['-mavx']
+        elif f.endswith('avx2.c'):
+            SOURCES[f].flags += ['-mavx2']
+
+# Suppress warnings in third-party code.
+if CONFIG['GNU_CC'] or CONFIG['CLANG_CL']:
+    CFLAGS += [
+        '-Wno-sign-compare',
+        '-Wno-unused-function', # so many of these warnings; just ignore them
+    ]
+if CONFIG['CLANG_CXX'] or CONFIG['CLANG_CL']:
+    CFLAGS += [
+        '-Wno-unreachable-code',
+        '-Wno-unneeded-internal-declaration',
+    ]
+
+ASFLAGS += CONFIG['VPX_ASFLAGS']
+ASFLAGS += [
+    '-I.',
+    '-I%s/third_party/aom' % TOPSRCDIR,
+]
+
+CFLAGS += [
+    '-I%s/third_party/aom' % TOPSRCDIR,
+    '-I%s/media/libaom/config' % TOPSRCDIR, # aom_version.h
+]