FFmpeg  4.4.4
cavs.h
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1 /*
2  * Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
3  * Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #ifndef AVCODEC_CAVS_H
23 #define AVCODEC_CAVS_H
24 
25 #include "libavutil/mem_internal.h"
26 
27 #include "cavsdsp.h"
28 #include "blockdsp.h"
29 #include "h264chroma.h"
30 #include "idctdsp.h"
31 #include "get_bits.h"
32 #include "videodsp.h"
33 
34 #define SLICE_MAX_START_CODE 0x000001af
35 #define EXT_START_CODE 0x000001b5
36 #define USER_START_CODE 0x000001b2
37 #define CAVS_START_CODE 0x000001b0
38 #define PIC_I_START_CODE 0x000001b3
39 #define PIC_PB_START_CODE 0x000001b6
40 
41 #define A_AVAIL 1
42 #define B_AVAIL 2
43 #define C_AVAIL 4
44 #define D_AVAIL 8
45 #define NOT_AVAIL -1
46 #define REF_INTRA -2
47 #define REF_DIR -3
48 
49 #define ESCAPE_CODE 59
50 
51 #define FWD0 0x01
52 #define FWD1 0x02
53 #define BWD0 0x04
54 #define BWD1 0x08
55 #define SYM0 0x10
56 #define SYM1 0x20
57 #define SPLITH 0x40
58 #define SPLITV 0x80
59 
60 #define MV_BWD_OFFS 12
61 #define MV_STRIDE 4
62 
63 enum cavs_mb {
64  I_8X8 = 0,
75  B_8X8 = 29
76 };
77 
82  B_SUB_SYM
83 };
84 
94 };
95 
104 };
105 
113 };
114 
119  BLK_8X8
120 };
121 
142  MV_BWD_X3
143 };
144 
145 DECLARE_ALIGNED(8, typedef, struct) {
146  int16_t x;
147  int16_t y;
148  int16_t dist;
149  int16_t ref;
150 } cavs_vector;
151 
152 struct dec_2dvlc {
153  int8_t rltab[59][3];
154  int8_t level_add[27];
155  int8_t golomb_order;
157  int8_t max_run;
158 };
159 
160 typedef struct AVSFrame {
162  int poc;
163 } AVSFrame;
164 
165 typedef struct AVSContext {
173  AVSFrame cur; ///< currently decoded frame
174  AVSFrame DPB[2]; ///< reference frames
175  int dist[2]; ///< temporal distances from current frame to ref frames
180  int width, height;
181  int stream_revision; ///<0 for samples from 2006, 1 for rm52j encoder
184  int skip_mode_flag; ///< select between skip_count or one skip_flag per MB
187  int ref_flag;
188  int mbx, mby, mbidx; ///< macroblock coordinates
189  int flags; ///< availability flags of neighbouring macroblocks
190  int stc; ///< last start code
191  uint8_t *cy, *cu, *cv; ///< current MB sample pointers
192  int left_qp;
194 
195  /** mv motion vector cache
196  0: D3 B2 B3 C2
197  4: A1 X0 X1 -
198  8: A3 X2 X3 -
199 
200  X are the vectors in the current macroblock (5,6,9,10)
201  A is the macroblock to the left (4,8)
202  B is the macroblock to the top (1,2)
203  C is the macroblock to the top-right (3)
204  D is the macroblock to the top-left (0)
205 
206  the same is repeated for backward motion vectors */
207  cavs_vector mv[2*4*3];
210 
211  /** luma pred mode cache
212  0: -- B2 B3
213  3: A1 X0 X1
214  6: A3 X2 X3 */
215  int pred_mode_Y[3*3];
217  ptrdiff_t l_stride, c_stride;
218  int luma_scan[4];
219  int qp;
220  int qp_fixed;
222  int cbp;
224 
225  /** intra prediction is done with un-deblocked samples
226  they are saved here before deblocking the MB */
231 
232  void (*intra_pred_l[8])(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride);
233  void (*intra_pred_c[7])(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride);
235 
236  /* scaling factors for MV prediction */
237  int sym_factor; ///< for scaling in symmetrical B block
238  int direct_den[2]; ///< for scaling in direct B block
239  int scale_den[2]; ///< for scaling neighbouring MVs
240 
242 
244  int16_t *block;
245 } AVSContext;
246 
247 extern const uint8_t ff_cavs_chroma_qp[64];
248 extern const uint8_t ff_cavs_partition_flags[30];
249 extern const cavs_vector ff_cavs_intra_mv;
250 extern const cavs_vector ff_cavs_dir_mv;
251 
252 static inline void set_mvs(cavs_vector *mv, enum cavs_block size) {
253  switch(size) {
254  case BLK_16X16:
255  mv[MV_STRIDE ] = mv[0];
256  mv[MV_STRIDE+1] = mv[0];
257  case BLK_16X8:
258  mv[1] = mv[0];
259  break;
260  case BLK_8X16:
261  mv[MV_STRIDE] = mv[0];
262  break;
263  }
264 }
265 
266 void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type);
268  int block);
270 void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv);
271 void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type);
272 void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC,
273  enum cavs_mv_pred mode, enum cavs_block size, int ref);
278 int ff_cavs_init(AVCodecContext *avctx);
279 int ff_cavs_end (AVCodecContext *avctx);
280 
281 #endif /* AVCODEC_CAVS_H */
uint8_t
#define MV_BWD_OFFS
Definition: cavs.h:60
int ff_cavs_init_pic(AVSContext *h)
Definition: cavs.c:725
cavs_sub_mb
Definition: cavs.h:78
@ B_SUB_SYM
Definition: cavs.h:82
@ B_SUB_DIRECT
Definition: cavs.h:79
@ B_SUB_FWD
Definition: cavs.h:80
@ B_SUB_BWD
Definition: cavs.h:81
const cavs_vector ff_cavs_dir_mv
mark block as "no prediction from this direction" e.g.
Definition: cavsdata.c:66
cavs_mv_pred
Definition: cavs.h:106
@ MV_PRED_MEDIAN
Definition: cavs.h:107
@ MV_PRED_TOP
Definition: cavs.h:109
@ MV_PRED_BSKIP
Definition: cavs.h:112
@ MV_PRED_PSKIP
Definition: cavs.h:111
@ MV_PRED_LEFT
Definition: cavs.h:108
@ MV_PRED_TOPRIGHT
Definition: cavs.h:110
const uint8_t ff_cavs_chroma_qp[64]
Definition: cavsdata.c:57
int ff_cavs_next_mb(AVSContext *h)
save predictors for later macroblocks and increase macroblock address
Definition: cavs.c:680
void ff_cavs_load_intra_pred_chroma(AVSContext *h)
Definition: cavs.c:238
cavs_mb
Definition: cavs.h:63
@ B_FWD_16X16
Definition: cavs.h:72
@ P_SKIP
Definition: cavs.h:65
@ P_8X16
Definition: cavs.h:68
@ I_8X8
Definition: cavs.h:64
@ B_8X8
Definition: cavs.h:75
@ P_16X8
Definition: cavs.h:67
@ B_DIRECT
Definition: cavs.h:71
@ B_SKIP
Definition: cavs.h:70
@ B_BWD_16X16
Definition: cavs.h:73
@ P_8X8
Definition: cavs.h:69
@ P_16X16
Definition: cavs.h:66
@ B_SYM_16X16
Definition: cavs.h:74
cavs_intra_luma
Definition: cavs.h:85
@ INTRA_L_DC_128
Definition: cavs.h:93
@ INTRA_L_LP_TOP
Definition: cavs.h:92
@ INTRA_L_LP_LEFT
Definition: cavs.h:91
@ INTRA_L_DOWN_LEFT
Definition: cavs.h:89
@ INTRA_L_LP
Definition: cavs.h:88
@ INTRA_L_DOWN_RIGHT
Definition: cavs.h:90
@ INTRA_L_HORIZ
Definition: cavs.h:87
@ INTRA_L_VERT
Definition: cavs.h:86
static void set_mvs(cavs_vector *mv, enum cavs_block size)
Definition: cavs.h:252
void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left, int block)
Definition: cavs.c:187
void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC, enum cavs_mv_pred mode, enum cavs_block size, int ref)
Definition: cavs.c:577
cavs_mv_loc
Definition: cavs.h:122
@ MV_BWD_D3
Definition: cavs.h:133
@ MV_FWD_C2
Definition: cavs.h:126
@ MV_BWD_X1
Definition: cavs.h:139
@ MV_FWD_X3
Definition: cavs.h:132
@ MV_BWD_A1
Definition: cavs.h:137
@ MV_FWD_A3
Definition: cavs.h:130
@ MV_FWD_X1
Definition: cavs.h:129
@ MV_BWD_B2
Definition: cavs.h:134
@ MV_BWD_X3
Definition: cavs.h:142
@ MV_BWD_B3
Definition: cavs.h:135
@ MV_BWD_A3
Definition: cavs.h:140
@ MV_FWD_X0
Definition: cavs.h:128
@ MV_FWD_D3
Definition: cavs.h:123
@ MV_BWD_X2
Definition: cavs.h:141
@ MV_FWD_B2
Definition: cavs.h:124
@ MV_FWD_B3
Definition: cavs.h:125
@ MV_FWD_X2
Definition: cavs.h:131
@ MV_FWD_A1
Definition: cavs.h:127
@ MV_BWD_X0
Definition: cavs.h:138
@ MV_BWD_C2
Definition: cavs.h:136
#define MV_STRIDE
Definition: cavs.h:61
void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type)
Definition: cavs.c:496
cavs_intra_chroma
Definition: cavs.h:96
@ INTRA_C_PLANE
Definition: cavs.h:100
@ INTRA_C_HORIZ
Definition: cavs.h:98
@ INTRA_C_VERT
Definition: cavs.h:99
@ INTRA_C_DC_128
Definition: cavs.h:103
@ INTRA_C_LP_LEFT
Definition: cavs.h:101
@ INTRA_C_LP
Definition: cavs.h:97
@ INTRA_C_LP_TOP
Definition: cavs.h:102
cavs_block
Definition: cavs.h:115
@ BLK_16X8
Definition: cavs.h:117
@ BLK_16X16
Definition: cavs.h:116
@ BLK_8X8
Definition: cavs.h:119
@ BLK_8X16
Definition: cavs.h:118
void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv)
Definition: cavs.c:365
const uint8_t ff_cavs_partition_flags[30]
Definition: cavsdata.c:24
int ff_cavs_init_top_lines(AVSContext *h)
some predictions require data from the top-neighbouring macroblock.
Definition: cavs.c:761
int ff_cavs_init(AVCodecContext *avctx)
Definition: cavs.c:796
int ff_cavs_end(AVCodecContext *avctx)
Definition: cavs.c:842
const cavs_vector ff_cavs_intra_mv
mark block as using intra prediction
Definition: cavsdata.c:69
void ff_cavs_init_mb(AVSContext *h)
initialise predictors for motion vectors and intra prediction
Definition: cavs.c:639
void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type)
in-loop deblocking filter for a single macroblock
Definition: cavs.c:111
mode
Use these values in ebur128_init (or'ed).
Definition: ebur128.h:83
bitstream reader API header.
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
Definition: mem.h:117
static const int8_t mv[256][2]
Definition: 4xm.c:78
int stride
Definition: mace.c:144
typedef void(RENAME(mix_any_func_type))
main external API structure.
Definition: avcodec.h:536
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
IDCTDSPContext idsp
Definition: cavs.h:169
int luma_scan[4]
Definition: cavs.h:218
int loop_filter_disable
Definition: cavs.h:185
int left_qp
Definition: cavs.h:192
GetBitContext gb
Definition: cavs.h:172
void(* intra_pred_c[7])(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
Definition: cavs.h:233
uint8_t * col_type_base
Definition: cavs.h:234
int alpha_offset
Definition: cavs.h:186
int pic_structure
Definition: cavs.h:183
VideoDSPContext vdsp
Definition: cavs.h:170
int mby
Definition: cavs.h:188
int pic_qp_fixed
Definition: cavs.h:221
int scale_den[2]
for scaling neighbouring MVs
Definition: cavs.h:239
int mbidx
macroblock coordinates
Definition: cavs.h:188
int sym_factor
for scaling in symmetrical B block
Definition: cavs.h:237
ptrdiff_t c_stride
Definition: cavs.h:217
uint8_t * cu
Definition: cavs.h:191
int mb_height
Definition: cavs.h:179
int qp_fixed
Definition: cavs.h:220
uint8_t * cv
current MB sample pointers
Definition: cavs.h:191
int direct_den[2]
for scaling in direct B block
Definition: cavs.h:238
uint8_t * top_qp
Definition: cavs.h:193
AVSFrame cur
currently decoded frame
Definition: cavs.h:173
int qp
Definition: cavs.h:219
uint8_t topleft_border_y
Definition: cavs.h:230
ScanTable scantable
Definition: cavs.h:223
uint8_t left_border_y[26]
Definition: cavs.h:228
int level
Definition: cavs.h:177
AVCodecContext * avctx
Definition: cavs.h:166
int stream_revision
0 for samples from 2006, 1 for rm52j encoder
Definition: cavs.h:181
uint8_t * top_border_u
Definition: cavs.h:227
cavs_vector * top_mv[2]
Definition: cavs.h:208
CAVSDSPContext cdsp
Definition: cavs.h:171
int progressive
Definition: cavs.h:182
int ref_flag
Definition: cavs.h:187
int profile
Definition: cavs.h:177
int16_t * block
Definition: cavs.h:244
uint8_t * top_border_y
intra prediction is done with un-deblocked samples they are saved here before deblocking the MB
Definition: cavs.h:227
uint8_t intern_border_y[26]
Definition: cavs.h:229
int height
Definition: cavs.h:180
int got_keyframe
Definition: cavs.h:243
uint8_t * top_border_v
Definition: cavs.h:227
void(* intra_pred_l[8])(uint8_t *d, uint8_t *top, uint8_t *left, ptrdiff_t stride)
Definition: cavs.h:232
H264ChromaContext h264chroma
Definition: cavs.h:168
uint8_t * edge_emu_buffer
Definition: cavs.h:241
int aspect_ratio
Definition: cavs.h:178
BlockDSPContext bdsp
Definition: cavs.h:167
uint8_t left_border_u[10]
Definition: cavs.h:228
int * top_pred_Y
Definition: cavs.h:216
uint8_t * cy
Definition: cavs.h:191
int mbx
Definition: cavs.h:188
int low_delay
Definition: cavs.h:176
int stc
last start code
Definition: cavs.h:190
uint8_t left_border_v[10]
Definition: cavs.h:228
ptrdiff_t l_stride
Definition: cavs.h:217
int width
Definition: cavs.h:180
int flags
availability flags of neighbouring macroblocks
Definition: cavs.h:189
cavs_vector mv[2 *4 *3]
mv motion vector cache 0: D3 B2 B3 C2 4: A1 X0 X1 - 8: A3 X2 X3 -
Definition: cavs.h:207
uint8_t topleft_border_v
Definition: cavs.h:230
int beta_offset
Definition: cavs.h:186
int dist[2]
temporal distances from current frame to ref frames
Definition: cavs.h:175
uint8_t topleft_border_u
Definition: cavs.h:230
int pred_mode_Y[3 *3]
luma pred mode cache 0: – B2 B3 3: A1 X0 X1 6: A3 X2 X3
Definition: cavs.h:215
int cbp
Definition: cavs.h:222
int mb_width
Definition: cavs.h:179
cavs_vector * col_mv
Definition: cavs.h:209
int skip_mode_flag
select between skip_count or one skip_flag per MB
Definition: cavs.h:184
Definition: cavs.h:160
AVFrame * f
Definition: cavs.h:161
int poc
Definition: cavs.h:162
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:82
Scantable.
Definition: idctdsp.h:31
int16_t x
Definition: cavs.h:146
int16_t y
Definition: cavs.h:147
int16_t dist
Definition: cavs.h:148
int16_t ref
Definition: cavs.h:149
int8_t level_add[27]
Definition: cavs.h:154
int8_t golomb_order
Definition: cavs.h:155
int inc_limit
Definition: cavs.h:156
int8_t rltab[59][3]
Definition: cavs.h:153
int8_t max_run
Definition: cavs.h:157
static int16_t block[64]
Definition: dct.c:116
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
int size
Core video DSP helper functions.