FFmpeg
vp9dec.h
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1 /*
2  * VP9 compatible video decoder
3  *
4  * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
5  * Copyright (C) 2013 Clément Bœsch <u pkh me>
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #ifndef AVCODEC_VP9DEC_H
25 #define AVCODEC_VP9DEC_H
26 
27 #include <stddef.h>
28 #include <stdint.h>
29 #include <stdatomic.h>
30 
31 #include "libavutil/buffer.h"
32 #include "libavutil/thread.h"
33 #include "libavutil/internal.h"
34 
35 #include "vp9.h"
36 #include "vp9dsp.h"
37 #include "vp9shared.h"
38 
39 enum MVJoint {
44 };
45 
46 typedef struct ProbContext {
47  uint8_t y_mode[4][9];
48  uint8_t uv_mode[10][9];
49  uint8_t filter[4][2];
55  uint8_t tx32p[2][3];
56  uint8_t tx16p[2][2];
60  struct {
66  uint8_t fp[3];
69  } mv_comp[2];
70  uint8_t partition[4][4][3];
71 } ProbContext;
72 
73 typedef struct VP9Filter {
74  uint8_t level[8 * 8];
75  uint8_t /* bit=col */ mask[2 /* 0=y, 1=uv */][2 /* 0=col, 1=row */]
76  [8 /* rows */][4 /* 0=16, 1=8, 2=4, 3=inner4 */];
77 } VP9Filter;
78 
79 typedef struct VP9Block {
80  uint8_t seg_id, intra, comp, ref[2], mode[4], uvmode, skip;
82  VP56mv mv[4 /* b_idx */][2 /* ref */];
83  enum BlockSize bs;
84  enum TxfmMode tx, uvtx;
85  enum BlockLevel bl;
86  enum BlockPartition bp;
87 } VP9Block;
88 
89 typedef struct VP9TileData VP9TileData;
90 
91 typedef struct VP9Context {
94 
99  int pass, active_tile_cols;
100 
101 #if HAVE_THREADS
102  pthread_mutex_t progress_mutex;
103  pthread_cond_t progress_cond;
104  atomic_int *entries;
105 #endif
106 
107  uint8_t ss_h, ss_v;
108  uint8_t last_bpp, bpp_index, bytesperpixel;
110  // sb_cols/rows, rows/cols and last_fmt are used for allocating all internal
111  // arrays, and are thus per-thread. w/h and gf_fmt are synced between threads
112  // and are therefore per-stream. pix_fmt represents the value in the header
113  // of the currently processed frame.
114  int w, h;
115  enum AVPixelFormat pix_fmt, last_fmt, gf_fmt;
116  unsigned sb_cols, sb_rows, rows, cols;
117  ThreadFrame next_refs[8];
118 
119  struct {
120  uint8_t lim_lut[64];
121  uint8_t mblim_lut[64];
122  } filter_lut;
123  struct {
125  uint8_t coef[4][2][2][6][6][3];
126  } prob_ctx[4];
127  struct {
128  ProbContext p;
129  uint8_t coef[4][2][2][6][6][11];
130  } prob;
131 
132  // contextual (above) cache
135  // FIXME maybe merge some of the below in a flags field?
137  uint8_t *above_uv_nnz_ctx[2];
145  VP56mv (*above_mv_ctx)[2];
146 
147  // whole-frame cache
148  uint8_t *intra_pred_data[3];
150 
151  // block reconstruction intermediates
153  uint16_t mvscale[3][2];
154  uint8_t mvstep[3][2];
155 } VP9Context;
156 
157 struct VP9TileData {
158  //VP9Context should be const, but because of the threading API(generates
159  //a lot of warnings) it's not.
163  int row, row7, col, col7;
164  uint8_t *dst[3];
165  ptrdiff_t y_stride, uv_stride;
167  unsigned tile_col_start;
168 
169  struct {
170  unsigned y_mode[4][10];
171  unsigned uv_mode[10][10];
172  unsigned filter[4][3];
173  unsigned mv_mode[7][4];
174  unsigned intra[4][2];
175  unsigned comp[5][2];
176  unsigned single_ref[5][2][2];
177  unsigned comp_ref[5][2];
178  unsigned tx32p[2][4];
179  unsigned tx16p[2][3];
180  unsigned tx8p[2][2];
181  unsigned skip[3][2];
182  unsigned mv_joint[4];
183  struct {
184  unsigned sign[2];
185  unsigned classes[11];
186  unsigned class0[2];
187  unsigned bits[10][2];
188  unsigned class0_fp[2][4];
189  unsigned fp[4];
190  unsigned class0_hp[2];
191  unsigned hp[2];
192  } mv_comp[2];
193  unsigned partition[4][4][4];
194  unsigned coef[4][2][2][6][6][3];
195  unsigned eob[4][2][2][6][6][2];
196  } counts;
197 
198  // whole-frame cache
199  DECLARE_ALIGNED(32, uint8_t, edge_emu_buffer)[135 * 144 * 2];
200 
201  // contextual (left) cache
202  DECLARE_ALIGNED(16, uint8_t, left_y_nnz_ctx)[16];
203  DECLARE_ALIGNED(16, uint8_t, left_mode_ctx)[16];
204  DECLARE_ALIGNED(16, VP56mv, left_mv_ctx)[16][2];
205  DECLARE_ALIGNED(16, uint8_t, left_uv_nnz_ctx)[2][16];
206  DECLARE_ALIGNED(8, uint8_t, left_partition_ctx)[8];
207  DECLARE_ALIGNED(8, uint8_t, left_skip_ctx)[8];
208  DECLARE_ALIGNED(8, uint8_t, left_txfm_ctx)[8];
209  DECLARE_ALIGNED(8, uint8_t, left_segpred_ctx)[8];
210  DECLARE_ALIGNED(8, uint8_t, left_intra_ctx)[8];
211  DECLARE_ALIGNED(8, uint8_t, left_comp_ctx)[8];
212  DECLARE_ALIGNED(8, uint8_t, left_ref_ctx)[8];
213  DECLARE_ALIGNED(8, uint8_t, left_filter_ctx)[8];
214  // block reconstruction intermediates
215  DECLARE_ALIGNED(32, uint8_t, tmp_y)[64 * 64 * 2];
216  DECLARE_ALIGNED(32, uint8_t, tmp_uv)[2][64 * 64 * 2];
217  struct { int x, y; } min_mv, max_mv;
218  int16_t *block_base, *block, *uvblock_base[2], *uvblock[2];
219  uint8_t *eob_base, *uveob_base[2], *eob, *uveob[2];
220 };
221 
222 void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb);
223 
225 
226 void ff_vp9_decode_block(VP9TileData *td, int row, int col,
227  VP9Filter *lflvl, ptrdiff_t yoff, ptrdiff_t uvoff,
228  enum BlockLevel bl, enum BlockPartition bp);
229 
230 void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl,
231  int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff);
232 
234  ptrdiff_t y_off, ptrdiff_t uv_off);
236  ptrdiff_t y_off, ptrdiff_t uv_off);
239 
240 #endif /* AVCODEC_VP9DEC_H */
static enum AVPixelFormat pix_fmt
uint8_t * above_skip_ctx
Definition: vp9dec.h:138
VP9Context * s
Definition: vp9dec.h:160
VideoDSPContext vdsp
Definition: vp9dec.h:96
ProbContext p
Definition: vp9dec.h:124
uint8_t last_keyframe
Definition: vp9dec.h:109
uint8_t ss_v
Definition: vp9dec.h:107
uint8_t tx32p[2][3]
Definition: vp9dec.h:55
VP9Filter * lflvl
Definition: vp9dec.h:149
intptr_t atomic_int
Definition: stdatomic.h:55
uint8_t comp_ref[5]
Definition: vp9dec.h:54
void ff_vp9_intra_recon_8bpp(VP9TileData *td, ptrdiff_t y_off, ptrdiff_t uv_off)
Definition: vp9recon.c:288
The exact code depends on how similar the blocks are and how related they are to the block
uint8_t
void ff_vp9_adapt_probs(VP9Context *s)
Definition: vp9prob.c:46
void ff_vp9_inter_recon_8bpp(VP9TileData *td)
Definition: vp9recon.c:636
void ff_vp9_intra_recon_16bpp(VP9TileData *td, ptrdiff_t y_off, ptrdiff_t uv_off)
Definition: vp9recon.c:293
VP9Block * b_base
Definition: vp9dec.h:166
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:112
VP56RangeCoder * c_b
Definition: vp9dec.h:161
uint8_t skip[3]
Definition: vp9dec.h:58
VP9DSPContext dsp
Definition: vp9dec.h:95
int row7
Definition: vp9dec.h:163
uint8_t * above_txfm_ctx
Definition: vp9dec.h:139
uint8_t uv_mode[10][9]
Definition: vp9dec.h:48
#define prob(name, subs,...)
Definition: cbs_vp9.c:374
void ff_vp9_loopfilter_sb(AVCodecContext *avctx, VP9Filter *lflvl, int row, int col, ptrdiff_t yoff, ptrdiff_t uvoff)
Definition: vp9lpf.c:178
uint8_t partition[4][4][3]
Definition: vp9dec.h:70
uint8_t hp
Definition: vp9dec.h:68
unsigned tile_col_start
Definition: vp9dec.h:167
#define td
Definition: regdef.h:70
uint8_t sign
Definition: vp9dec.h:61
static const uint16_t mask[17]
Definition: lzw.c:38
GetBitContext gb
Definition: vp9dec.h:97
uint8_t fp[3]
Definition: vp9dec.h:66
TxfmMode
Definition: vp9.h:27
uint8_t intra[4]
Definition: vp9dec.h:51
VP56RangeCoder * c
Definition: vp9dec.h:162
void ff_vp9_inter_recon_16bpp(VP9TileData *td)
Definition: vp9recon.c:641
uint8_t * above_filter_ctx
Definition: vp9dec.h:144
common internal API header
uint8_t comp[5]
Definition: vp9dec.h:52
#define b
Definition: input.c:41
VP9TileData * td
Definition: vp9dec.h:93
BlockSize
Definition: vp9shared.h:77
uint8_t tx16p[2][2]
Definition: vp9dec.h:56
uint8_t class0_hp
Definition: vp9dec.h:67
#define s(width, name)
Definition: cbs_vp9.c:257
VP9SharedContext s
Definition: vp9dec.h:92
uint8_t uvmode
Definition: vp9dec.h:80
uint8_t * above_partition_ctx
Definition: vp9dec.h:133
uint8_t mv_mode[7][3]
Definition: vp9dec.h:50
MVJoint
Definition: vp9dec.h:39
uint8_t * above_segpred_ctx
Definition: vp9dec.h:140
static const int8_t mv[256][2]
Definition: 4xm.c:77
FilterMode
Definition: vp9.h:64
BlockLevel
Definition: vp9shared.h:70
uint8_t filter[4][2]
Definition: vp9dec.h:49
uint8_t class0_fp[2][3]
Definition: vp9dec.h:65
int pass
Definition: vp9dec.h:99
main external API structure.
Definition: avcodec.h:1568
uint8_t * above_y_nnz_ctx
Definition: vp9dec.h:136
uint8_t tx8p[2]
Definition: vp9dec.h:57
uint8_t y_mode[4][9]
Definition: vp9dec.h:47
void ff_vp9_fill_mv(VP9TileData *td, VP56mv *mv, int mode, int sb)
Definition: vp9mvs.c:291
refcounted data buffer API
struct ProbContext::@193 mv_comp[2]
uint8_t last_bpp
Definition: vp9dec.h:108
uint8_t * above_intra_ctx
Definition: vp9dec.h:141
uint8_t * above_mode_ctx
Definition: vp9dec.h:134
uint8_t single_ref[5][2]
Definition: vp9dec.h:53
Definition: vp56.h:66
uint8_t bits[10]
Definition: vp9dec.h:64
uint8_t level
Definition: svq3.c:207
_fmutex pthread_mutex_t
Definition: os2threads.h:49
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
int w
Definition: vp9dec.h:114
unsigned sb_rows
Definition: vp9dec.h:116
uint8_t mv_joint[3]
Definition: vp9dec.h:59
uint8_t class0
Definition: vp9dec.h:63
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)
Definition: vp9block.c:1263
ptrdiff_t y_stride
Definition: vp9dec.h:165
uint8_t * above_ref_ctx
Definition: vp9dec.h:143
BlockPartition
Definition: vp9shared.h:34
uint8_t classes[10]
Definition: vp9dec.h:62
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
mode
Use these values in ebur128_init (or&#39;ed).
Definition: ebur128.h:83
uint8_t * above_comp_ctx
Definition: vp9dec.h:142
int block_alloc_using_2pass
Definition: vp9dec.h:152
VP56RangeCoder c
Definition: vp9dec.h:98