257 lines
7.6 KiB
C
257 lines
7.6 KiB
C
/*
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* VP9 compatible video decoder
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*
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* Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
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* Copyright (C) 2013 Clément Bœsch <u pkh me>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_VP9DEC_H
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#define AVCODEC_VP9DEC_H
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#include <stddef.h>
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#include <stdint.h>
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#include <stdatomic.h>
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#include "libavutil/buffer.h"
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#include "libavutil/thread.h"
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#include "libavutil/internal.h"
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#include "vp9.h"
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#include "vp9dsp.h"
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#include "vp9shared.h"
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#define REF_INVALID_SCALE 0xFFFF
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enum MVJoint {
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MV_JOINT_ZERO,
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MV_JOINT_H,
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MV_JOINT_V,
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MV_JOINT_HV,
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};
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typedef struct ProbContext {
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uint8_t y_mode[4][9];
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uint8_t uv_mode[10][9];
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uint8_t filter[4][2];
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uint8_t mv_mode[7][3];
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uint8_t intra[4];
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uint8_t comp[5];
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uint8_t single_ref[5][2];
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uint8_t comp_ref[5];
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uint8_t tx32p[2][3];
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uint8_t tx16p[2][2];
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uint8_t tx8p[2];
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uint8_t skip[3];
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uint8_t mv_joint[3];
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struct {
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uint8_t sign;
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uint8_t classes[10];
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uint8_t class0;
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uint8_t bits[10];
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uint8_t class0_fp[2][3];
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uint8_t fp[3];
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uint8_t class0_hp;
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uint8_t hp;
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} mv_comp[2];
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uint8_t partition[4][4][3];
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} ProbContext;
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typedef struct VP9Filter {
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uint8_t level[8 * 8];
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uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */]
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[8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */];
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} VP9Filter;
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typedef struct VP9Block {
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uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip;
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enum FilterMode filter;
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VP56mv mv[4 /* b_idx */][2 /* ref */];
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enum BlockSize bs;
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enum TxfmMode tx, uvtx;
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enum BlockLevel bl;
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enum BlockPartition bp;
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} VP9Block;
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typedef struct VP9TileData VP9TileData;
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typedef struct VP9Context {
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VP9SharedContext s;
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VP9TileData *td;
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VP9DSPContext dsp;
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VideoDSPContext vdsp;
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GetBitContext gb;
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VP56RangeCoder c;
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int pass, active_tile_cols;
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#if HAVE_THREADS
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pthread_mutex_t progress_mutex;
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pthread_cond_t progress_cond;
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atomic_int *entries;
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#endif
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uint8_t ss_h, ss_v;
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uint8_t last_bpp, bpp_index, bytesperpixel;
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uint8_t last_keyframe;
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// sb_cols/rows, rows/cols and last_fmt are used for allocating all internal
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// arrays, and are thus per-thread. w/h and gf_fmt are synced between threads
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// and are therefore per-stream. pix_fmt represents the value in the header
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// of the currently processed frame.
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int w, h;
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enum AVPixelFormat pix_fmt, last_fmt, gf_fmt;
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unsigned sb_cols, sb_rows, rows, cols;
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ThreadFrame next_refs[8];
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struct {
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uint8_t lim_lut[64];
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uint8_t mblim_lut[64];
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} filter_lut;
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struct {
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ProbContext p;
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uint8_t coef[4][2][2][6][6][3];
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} prob_ctx[4];
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struct {
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ProbContext p;
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uint8_t coef[4][2][2][6][6][11];
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} prob;
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// contextual (above) cache
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uint8_t *above_partition_ctx;
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uint8_t *above_mode_ctx;
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// FIXME maybe merge some of the below in a flags field?
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uint8_t *above_y_nnz_ctx;
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uint8_t *above_uv_nnz_ctx[2];
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uint8_t *above_skip_ctx; // 1bit
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uint8_t *above_txfm_ctx; // 2bit
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uint8_t *above_segpred_ctx; // 1bit
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uint8_t *above_intra_ctx; // 1bit
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uint8_t *above_comp_ctx; // 1bit
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uint8_t *above_ref_ctx; // 2bit
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uint8_t *above_filter_ctx;
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VP56mv (*above_mv_ctx)[2];
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// whole-frame cache
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uint8_t *intra_pred_data[3];
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VP9Filter *lflvl;
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// block reconstruction intermediates
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int block_alloc_using_2pass;
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uint16_t mvscale[3][2];
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uint8_t mvstep[3][2];
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// frame specific buffer pools
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AVBufferPool *frame_extradata_pool;
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int frame_extradata_pool_size;
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} VP9Context;
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struct VP9TileData {
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//VP9Context should be const, but because of the threading API(generates
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//a lot of warnings) it's not.
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VP9Context *s;
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VP56RangeCoder *c_b;
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VP56RangeCoder *c;
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int row, row7, col, col7;
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uint8_t *dst[3];
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ptrdiff_t y_stride, uv_stride;
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VP9Block *b_base, *b;
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unsigned tile_col_start;
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struct {
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unsigned y_mode[4][10];
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unsigned uv_mode[10][10];
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unsigned filter[4][3];
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unsigned mv_mode[7][4];
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unsigned intra[4][2];
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unsigned comp[5][2];
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unsigned single_ref[5][2][2];
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unsigned comp_ref[5][2];
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unsigned tx32p[2][4];
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unsigned tx16p[2][3];
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unsigned tx8p[2][2];
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unsigned skip[3][2];
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unsigned mv_joint[4];
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struct {
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unsigned sign[2];
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unsigned classes[11];
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unsigned class0[2];
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unsigned bits[10][2];
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unsigned class0_fp[2][4];
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unsigned fp[4];
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unsigned class0_hp[2];
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unsigned hp[2];
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} mv_comp[2];
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unsigned partition[4][4][4];
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unsigned coef[4][2][2][6][6][3];
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unsigned eob[4][2][2][6][6][2];
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} counts;
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// whole-frame cache
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DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2];
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// contextual (left) cache
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DECLARE_ALIGNED(16, uint8_t, left_y_nnz_ctx)[16];
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DECLARE_ALIGNED(16, uint8_t, left_mode_ctx)[16];
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DECLARE_ALIGNED(16, VP56mv, left_mv_ctx)[16][2];
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DECLARE_ALIGNED(16, uint8_t, left_uv_nnz_ctx)[2][16];
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DECLARE_ALIGNED(8, uint8_t, left_partition_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_skip_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_txfm_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_segpred_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_intra_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_comp_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_ref_ctx)[8];
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DECLARE_ALIGNED(8, uint8_t, left_filter_ctx)[8];
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// block reconstruction intermediates
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DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64 * 2];
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DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][64 * 64 * 2];
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struct { int x, y; } min_mv, max_mv;
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int16_t *block_base, *block, *uvblock_base[2], *uvblock[2];
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uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2];
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// error message
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int error_info;
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struct {
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unsigned int row:13;
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unsigned int col:13;
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unsigned int block_size_idx_x:2;
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unsigned int block_size_idx_y:2;
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} *block_structure;
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unsigned int nb_block_structure;
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};
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void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb);
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void ff_vp9_adapt_probs(VP9Context *s);
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void ff_vp9_decode_block(VP9TileData *td, int row, int col,
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VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff,
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enum BlockLevel bl, enum BlockPartition bp);
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void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
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int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff);
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void ff_vp9_intra_recon_8bpp(VP9TileData *td,
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ptrdiff_t y_off, ptrdiff_t uv_off);
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void ff_vp9_intra_recon_16bpp(VP9TileData *td,
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ptrdiff_t y_off, ptrdiff_t uv_off);
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void ff_vp9_inter_recon_8bpp(VP9TileData *td);
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void ff_vp9_inter_recon_16bpp(VP9TileData *td);
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#endif /* AVCODEC_VP9DEC_H */
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