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FFmpeg/libavcodec/vp9dec.h
Hendrik Leppkes b4ecf2b582 vp9: move VP9SharedContext back to the top of VP9Context
VP9SharedContext needs to be the first member so its properties can be
safely accessed from hardware accelerators, without the need to share
the full VP9Context.

Fixes ticket .
2017-09-19 14:52:15 +02:00

241 lines
7.2 KiB
C

/*
* VP9 compatible video decoder
*
* Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
* Copyright (C) 2013 Clément Bœsch <u pkh me>
*
* 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_VP9DEC_H
#define AVCODEC_VP9DEC_H
#include <stddef.h>
#include <stdint.h>
#include <stdatomic.h>
#include "libavutil/buffer.h"
#include "libavutil/thread.h"
#include "libavutil/internal.h"
#include "vp9.h"
#include "vp9dsp.h"
#include "vp9shared.h"
enum MVJoint {
MV_JOINT_ZERO,
MV_JOINT_H,
MV_JOINT_V,
MV_JOINT_HV,
};
typedef struct ProbContext {
uint8_t y_mode[4][9];
uint8_t uv_mode[10][9];
uint8_t filter[4][2];
uint8_t mv_mode[7][3];
uint8_t intra[4];
uint8_t comp[5];
uint8_t single_ref[5][2];
uint8_t comp_ref[5];
uint8_t tx32p[2][3];
uint8_t tx16p[2][2];
uint8_t tx8p[2];
uint8_t skip[3];
uint8_t mv_joint[3];
struct {
uint8_t sign;
uint8_t classes[10];
uint8_t class0;
uint8_t bits[10];
uint8_t class0_fp[2][3];
uint8_t fp[3];
uint8_t class0_hp;
uint8_t hp;
} mv_comp[2];
uint8_t partition[4][4][3];
} ProbContext;
typedef struct VP9Filter {
uint8_t level[8 * 8];
uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */]
[8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */];
} VP9Filter;
typedef struct VP9Block {
uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip;
enum FilterMode filter;
VP56mv mv[4 /* b_idx */][2 /* ref */];
enum BlockSize bs;
enum TxfmMode tx, uvtx;
enum BlockLevel bl;
enum BlockPartition bp;
} VP9Block;
typedef struct VP9TileData VP9TileData;
typedef struct VP9Context {
VP9SharedContext s;
VP9TileData *td;
VP9DSPContext dsp;
VideoDSPContext vdsp;
GetBitContext gb;
VP56RangeCoder c;
int pass, active_tile_cols;
#if HAVE_THREADS
pthread_mutex_t progress_mutex;
pthread_cond_t progress_cond;
atomic_int *entries;
#endif
uint8_t ss_h, ss_v;
uint8_t last_bpp, bpp_index, bytesperpixel;
uint8_t last_keyframe;
// sb_cols/rows, rows/cols and last_fmt are used for allocating all internal
// arrays, and are thus per-thread. w/h and gf_fmt are synced between threads
// and are therefore per-stream. pix_fmt represents the value in the header
// of the currently processed frame.
int w, h;
enum AVPixelFormat pix_fmt, last_fmt, gf_fmt;
unsigned sb_cols, sb_rows, rows, cols;
ThreadFrame next_refs[8];
struct {
uint8_t lim_lut[64];
uint8_t mblim_lut[64];
} filter_lut;
struct {
ProbContext p;
uint8_t coef[4][2][2][6][6][3];
} prob_ctx[4];
struct {
ProbContext p;
uint8_t coef[4][2][2][6][6][11];
} prob;
// contextual (above) cache
uint8_t *above_partition_ctx;
uint8_t *above_mode_ctx;
// FIXME maybe merge some of the below in a flags field?
uint8_t *above_y_nnz_ctx;
uint8_t *above_uv_nnz_ctx[2];
uint8_t *above_skip_ctx; // 1bit
uint8_t *above_txfm_ctx; // 2bit
uint8_t *above_segpred_ctx; // 1bit
uint8_t *above_intra_ctx; // 1bit
uint8_t *above_comp_ctx; // 1bit
uint8_t *above_ref_ctx; // 2bit
uint8_t *above_filter_ctx;
VP56mv (*above_mv_ctx)[2];
// whole-frame cache
uint8_t *intra_pred_data[3];
VP9Filter *lflvl;
// block reconstruction intermediates
int block_alloc_using_2pass;
uint16_t mvscale[3][2];
uint8_t mvstep[3][2];
} VP9Context;
struct VP9TileData {
//VP9Context should be const, but because of the threading API(generates
//a lot of warnings) it's not.
VP9Context *s;
VP56RangeCoder *c_b;
VP56RangeCoder *c;
int row, row7, col, col7;
uint8_t *dst[3];
ptrdiff_t y_stride, uv_stride;
VP9Block *b_base, *b;
unsigned tile_col_start;
struct {
unsigned y_mode[4][10];
unsigned uv_mode[10][10];
unsigned filter[4][3];
unsigned mv_mode[7][4];
unsigned intra[4][2];
unsigned comp[5][2];
unsigned single_ref[5][2][2];
unsigned comp_ref[5][2];
unsigned tx32p[2][4];
unsigned tx16p[2][3];
unsigned tx8p[2][2];
unsigned skip[3][2];
unsigned mv_joint[4];
struct {
unsigned sign[2];
unsigned classes[11];
unsigned class0[2];
unsigned bits[10][2];
unsigned class0_fp[2][4];
unsigned fp[4];
unsigned class0_hp[2];
unsigned hp[2];
} mv_comp[2];
unsigned partition[4][4][4];
unsigned coef[4][2][2][6][6][3];
unsigned eob[4][2][2][6][6][2];
} counts;
// whole-frame cache
DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2];
// contextual (left) cache
DECLARE_ALIGNED(16, uint8_t, left_y_nnz_ctx)[16];
DECLARE_ALIGNED(16, uint8_t, left_mode_ctx)[16];
DECLARE_ALIGNED(16, VP56mv, left_mv_ctx)[16][2];
DECLARE_ALIGNED(16, uint8_t, left_uv_nnz_ctx)[2][16];
DECLARE_ALIGNED(8, uint8_t, left_partition_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_skip_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_txfm_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_segpred_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_intra_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_comp_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_ref_ctx)[8];
DECLARE_ALIGNED(8, uint8_t, left_filter_ctx)[8];
// block reconstruction intermediates
DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64 * 2];
DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][64 * 64 * 2];
struct { int x, y; } min_mv, max_mv;
int16_t *block_base, *block, *uvblock_base[2], *uvblock[2];
uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2];
};
void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb);
void ff_vp9_adapt_probs(VP9Context *s);
void ff_vp9_decode_block(VP9TileData *td, int row, int col,
VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff,
enum BlockLevel bl, enum BlockPartition bp);
void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff);
void ff_vp9_intra_recon_8bpp(VP9TileData *td,
ptrdiff_t y_off, ptrdiff_t uv_off);
void ff_vp9_intra_recon_16bpp(VP9TileData *td,
ptrdiff_t y_off, ptrdiff_t uv_off);
void ff_vp9_inter_recon_8bpp(VP9TileData *td);
void ff_vp9_inter_recon_16bpp(VP9TileData *td);
#endif /* AVCODEC_VP9DEC_H */