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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /media/ffvpx/libavcodec/vp8.h | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'media/ffvpx/libavcodec/vp8.h')
-rw-r--r-- | media/ffvpx/libavcodec/vp8.h | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/vp8.h b/media/ffvpx/libavcodec/vp8.h new file mode 100644 index 000000000..374e1388e --- /dev/null +++ b/media/ffvpx/libavcodec/vp8.h @@ -0,0 +1,311 @@ +/* + * VP8 compatible video decoder + * + * Copyright (C) 2010 David Conrad + * Copyright (C) 2010 Ronald S. Bultje + * Copyright (C) 2010 Fiona Glaser + * Copyright (C) 2012 Daniel Kang + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_VP8_H +#define AVCODEC_VP8_H + +#include "libavutil/buffer.h" +#include "libavutil/thread.h" + +#include "h264pred.h" +#include "thread.h" +#include "vp56.h" +#include "vp8dsp.h" + +#define VP8_MAX_QUANT 127 + +enum dct_token { + DCT_0, + DCT_1, + DCT_2, + DCT_3, + DCT_4, + DCT_CAT1, + DCT_CAT2, + DCT_CAT3, + DCT_CAT4, + DCT_CAT5, + DCT_CAT6, + DCT_EOB, + + NUM_DCT_TOKENS +}; + +// used to signal 4x4 intra pred in luma MBs +#define MODE_I4x4 4 + +enum inter_mvmode { + VP8_MVMODE_ZERO = MODE_I4x4 + 1, + VP8_MVMODE_MV, + VP8_MVMODE_SPLIT +}; + +enum inter_splitmvmode { + VP8_SPLITMVMODE_16x8 = 0, ///< 2 16x8 blocks (vertical) + VP8_SPLITMVMODE_8x16, ///< 2 8x16 blocks (horizontal) + VP8_SPLITMVMODE_8x8, ///< 2x2 blocks of 8x8px each + VP8_SPLITMVMODE_4x4, ///< 4x4 blocks of 4x4px each + VP8_SPLITMVMODE_NONE, ///< (only used in prediction) no split MVs +}; + +typedef struct VP8FilterStrength { + uint8_t filter_level; + uint8_t inner_limit; + uint8_t inner_filter; +} VP8FilterStrength; + +typedef struct VP8Macroblock { + uint8_t skip; + // TODO: make it possible to check for at least (i4x4 or split_mv) + // in one op. are others needed? + uint8_t mode; + uint8_t ref_frame; + uint8_t partitioning; + uint8_t chroma_pred_mode; + uint8_t segment; + uint8_t intra4x4_pred_mode_mb[16]; + DECLARE_ALIGNED(4, uint8_t, intra4x4_pred_mode_top)[4]; + VP56mv mv; + VP56mv bmv[16]; +} VP8Macroblock; + +typedef struct VP8ThreadData { + DECLARE_ALIGNED(16, int16_t, block)[6][4][16]; + DECLARE_ALIGNED(16, int16_t, block_dc)[16]; + /** + * This is the index plus one of the last non-zero coeff + * for each of the blocks in the current macroblock. + * So, 0 -> no coeffs + * 1 -> dc-only (special transform) + * 2+-> full transform + */ + DECLARE_ALIGNED(16, uint8_t, non_zero_count_cache)[6][4]; + /** + * For coeff decode, we need to know whether the above block had non-zero + * coefficients. This means for each macroblock, we need data for 4 luma + * blocks, 2 u blocks, 2 v blocks, and the luma dc block, for a total of 9 + * per macroblock. We keep the last row in top_nnz. + */ + DECLARE_ALIGNED(8, uint8_t, left_nnz)[9]; + int thread_nr; +#if HAVE_THREADS + pthread_mutex_t lock; + pthread_cond_t cond; +#endif + int thread_mb_pos; // (mb_y << 16) | (mb_x & 0xFFFF) + int wait_mb_pos; // What the current thread is waiting on. + +#define EDGE_EMU_LINESIZE 32 + DECLARE_ALIGNED(16, uint8_t, edge_emu_buffer)[21 * EDGE_EMU_LINESIZE]; + VP8FilterStrength *filter_strength; +} VP8ThreadData; + +typedef struct VP8Frame { + ThreadFrame tf; + AVBufferRef *seg_map; +} VP8Frame; + +typedef struct VP8intmv { + int x; + int y; +} VP8intmv; + +#define MAX_THREADS 8 +typedef struct VP8Context { + VP8ThreadData *thread_data; + AVCodecContext *avctx; + VP8Frame *framep[4]; + VP8Frame *next_framep[4]; + VP8Frame *curframe; + VP8Frame *prev_frame; + + uint16_t mb_width; /* number of horizontal MB */ + uint16_t mb_height; /* number of vertical MB */ + int linesize; + int uvlinesize; + + uint8_t keyframe; + uint8_t deblock_filter; + uint8_t mbskip_enabled; + uint8_t profile; + VP8intmv mv_min; + VP8intmv mv_max; + + int8_t sign_bias[4]; ///< one state [0, 1] per ref frame type + int ref_count[3]; + + /** + * Base parameters for segmentation, i.e. per-macroblock parameters. + * These must be kept unchanged even if segmentation is not used for + * a frame, since the values persist between interframes. + */ + struct { + uint8_t enabled; + uint8_t absolute_vals; + uint8_t update_map; + int8_t base_quant[4]; + int8_t filter_level[4]; ///< base loop filter level + } segmentation; + + struct { + uint8_t simple; + uint8_t level; + uint8_t sharpness; + } filter; + + VP8Macroblock *macroblocks; + + uint8_t *intra4x4_pred_mode_top; + uint8_t intra4x4_pred_mode_left[4]; + + /** + * Macroblocks can have one of 4 different quants in a frame when + * segmentation is enabled. + * If segmentation is disabled, only the first segment's values are used. + */ + struct { + // [0] - DC qmul [1] - AC qmul + int16_t luma_qmul[2]; + int16_t luma_dc_qmul[2]; ///< luma dc-only block quant + int16_t chroma_qmul[2]; + } qmat[4]; + + struct { + uint8_t enabled; ///< whether each mb can have a different strength based on mode/ref + + /** + * filter strength adjustment for the following macroblock modes: + * [0-3] - i16x16 (always zero) + * [4] - i4x4 + * [5] - zero mv + * [6] - inter modes except for zero or split mv + * [7] - split mv + * i16x16 modes never have any adjustment + */ + int8_t mode[VP8_MVMODE_SPLIT + 1]; + + /** + * filter strength adjustment for macroblocks that reference: + * [0] - intra / VP56_FRAME_CURRENT + * [1] - VP56_FRAME_PREVIOUS + * [2] - VP56_FRAME_GOLDEN + * [3] - altref / VP56_FRAME_GOLDEN2 + */ + int8_t ref[4]; + } lf_delta; + + uint8_t (*top_border)[16 + 8 + 8]; + uint8_t (*top_nnz)[9]; + + VP56RangeCoder c; ///< header context, includes mb modes and motion vectors + + /** + * These are all of the updatable probabilities for binary decisions. + * They are only implicitly reset on keyframes, making it quite likely + * for an interframe to desync if a prior frame's header was corrupt + * or missing outright! + */ + struct { + uint8_t segmentid[3]; + uint8_t mbskip; + uint8_t intra; + uint8_t last; + uint8_t golden; + uint8_t pred16x16[4]; + uint8_t pred8x8c[3]; + uint8_t token[4][16][3][NUM_DCT_TOKENS - 1]; + uint8_t mvc[2][19]; + uint8_t scan[16]; + } prob[2]; + + VP8Macroblock *macroblocks_base; + int invisible; + int update_last; ///< update VP56_FRAME_PREVIOUS with the current one + int update_golden; ///< VP56_FRAME_NONE if not updated, or which frame to copy if so + int update_altref; + + /** + * If this flag is not set, all the probability updates + * are discarded after this frame is decoded. + */ + int update_probabilities; + + /** + * All coefficients are contained in separate arith coding contexts. + * There can be 1, 2, 4, or 8 of these after the header context. + */ + int num_coeff_partitions; + VP56RangeCoder coeff_partition[8]; + VideoDSPContext vdsp; + VP8DSPContext vp8dsp; + H264PredContext hpc; + vp8_mc_func put_pixels_tab[3][3][3]; + VP8Frame frames[5]; + + uint8_t colorspace; ///< 0 is the only value allowed (meaning bt601) + uint8_t fullrange; ///< whether we can skip clamping in dsp functions + + int num_jobs; + /** + * This describes the macroblock memory layout. + * 0 -> Only width+height*2+1 macroblocks allocated (frame/single thread). + * 1 -> Macroblocks for entire frame allocated (sliced thread). + */ + int mb_layout; + + void (*decode_mb_row_no_filter)(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr); + void (*filter_mb_row)(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr); + + int vp7; + + /** + * Fade bit present in bitstream (VP7) + */ + int fade_present; + + /** + * Interframe DC prediction (VP7) + * [0] VP56_FRAME_PREVIOUS + * [1] VP56_FRAME_GOLDEN + */ + uint16_t inter_dc_pred[2][2]; + + /** + * Macroblock features (VP7) + */ + uint8_t feature_enabled[4]; + uint8_t feature_present_prob[4]; + uint8_t feature_index_prob[4][3]; + uint8_t feature_value[4][4]; +} VP8Context; + +int ff_vp8_decode_init(AVCodecContext *avctx); + +int ff_vp8_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, + AVPacket *avpkt); + +int ff_vp8_decode_free(AVCodecContext *avctx); + +#endif /* AVCODEC_VP8_H */ |