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 Libav.
6  *
7  * Libav 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  * Libav 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 Libav; 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 "cavsdsp.h"
26 #include "dsputil.h"
27 #include "get_bits.h"
28 #include "videodsp.h"
29 
30 #define SLICE_MAX_START_CODE 0x000001af
31 #define EXT_START_CODE 0x000001b5
32 #define USER_START_CODE 0x000001b2
33 #define CAVS_START_CODE 0x000001b0
34 #define PIC_I_START_CODE 0x000001b3
35 #define PIC_PB_START_CODE 0x000001b6
36 
37 #define A_AVAIL 1
38 #define B_AVAIL 2
39 #define C_AVAIL 4
40 #define D_AVAIL 8
41 #define NOT_AVAIL -1
42 #define REF_INTRA -2
43 #define REF_DIR -3
44 
45 #define ESCAPE_CODE 59
46 
47 #define FWD0 0x01
48 #define FWD1 0x02
49 #define BWD0 0x04
50 #define BWD1 0x08
51 #define SYM0 0x10
52 #define SYM1 0x20
53 #define SPLITH 0x40
54 #define SPLITV 0x80
55 
56 #define MV_BWD_OFFS 12
57 #define MV_STRIDE 4
58 
59 enum cavs_mb {
60  I_8X8 = 0,
71  B_8X8 = 29
72 };
73 
79 };
80 
90 };
91 
100 };
101 
109 };
110 
116 };
117 
139 };
140 
141 DECLARE_ALIGNED(8, typedef, struct) {
142  int16_t x;
143  int16_t y;
144  int16_t dist;
145  int16_t ref;
146 } cavs_vector;
147 
148 struct dec_2dvlc {
149  int8_t rltab[59][3];
150  int8_t level_add[27];
151  int8_t golomb_order;
153  int8_t max_run;
154 };
155 
156 typedef struct AVSFrame {
158  int poc;
159 } AVSFrame;
160 
161 typedef struct AVSContext {
169  int dist[2];
174  int width, height;
181  int ref_flag;
182  int mbx, mby, mbidx;
183  int flags;
184  int stc;
185  uint8_t *cy, *cu, *cv;
186  int left_qp;
188 
201  cavs_vector mv[2*4*3];
204 
209  int pred_mode_Y[3*3];
212  int luma_scan[4];
213  int qp;
214  int qp_fixed;
215  int cbp;
217 
224 
225  void (*intra_pred_l[8])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
226  void (*intra_pred_c[7])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
228 
229  /* scaling factors for MV prediction */
231  int direct_den[2];
232  int scale_den[2];
233 
235 
238 } AVSContext;
239 
240 extern const uint8_t ff_cavs_partition_flags[30];
241 extern const cavs_vector ff_cavs_intra_mv;
242 extern const cavs_vector ff_cavs_dir_mv;
243 
244 static inline void set_mvs(cavs_vector *mv, enum cavs_block size) {
245  switch(size) {
246  case BLK_16X16:
247  mv[MV_STRIDE ] = mv[0];
248  mv[MV_STRIDE+1] = mv[0];
249  case BLK_16X8:
250  mv[1] = mv[0];
251  break;
252  case BLK_8X16:
253  mv[MV_STRIDE] = mv[0];
254  break;
255  }
256 }
257 
258 void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type);
260  int block);
262 void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv);
263 void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type);
264 void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC,
265  enum cavs_mv_pred mode, enum cavs_block size, int ref);
266 void ff_cavs_init_mb(AVSContext *h);
270 int ff_cavs_init(AVCodecContext *avctx);
271 int ff_cavs_end (AVCodecContext *avctx);
272 
273 #endif /* AVCODEC_CAVS_H */
cavs_mv_loc
Definition: cavs.h:118
void(* intra_pred_c[7])(uint8_t *d, uint8_t *top, uint8_t *left, int stride)
Definition: cavs.h:226
uint8_t * top_border_v
Definition: cavs.h:220
int pic_structure
Definition: cavs.h:177
uint8_t * top_border_u
Definition: cavs.h:220
uint8_t topleft_border_y
Definition: cavs.h:223
cavs_intra_luma
Definition: cavs.h:81
Definition: cavs.h:71
int got_keyframe
Definition: cavs.h:236
AVCodecContext * avctx
Definition: cavs.h:162
int inc_limit
Definition: cavs.h:152
int size
This structure describes decoded (raw) audio or video data.
Definition: avcodec.h:989
uint8_t * edge_emu_buffer
Definition: cavs.h:234
int direct_den[2]
for scaling in direct B block
Definition: cavs.h:231
int cbp
Definition: cavs.h:215
const cavs_vector ff_cavs_intra_mv
mark block as using intra prediction
Definition: cavsdata.c:62
Definition: cavs.h:60
int16_t x
Definition: cavs.h:142
int mbidx
macroblock coordinates
Definition: cavs.h:182
cavs_vector * col_mv
Definition: cavs.h:203
int poc
Definition: cavs.h:158
Scantable.
Definition: dsputil.h:181
Definition: cavs.h:67
void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv)
Definition: cavs.c:351
Definition: cavs.h:64
int qp
Definition: cavs.h:213
int loop_filter_disable
Definition: cavs.h:179
int stride
Definition: mace.c:144
int left_qp
Definition: cavs.h:186
struct AVSFrame AVSFrame
void ff_cavs_init_mb(AVSContext *h)
initialise predictors for motion vectors and intra prediction
Definition: cavs.c:586
int ff_cavs_init(AVCodecContext *avctx)
Definition: cavs.c:719
uint8_t intern_border_y[26]
Definition: cavs.h:222
void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left, int block)
Definition: cavs.c:177
cavs_mb
Definition: cavs.h:59
#define MV_BWD_OFFS
Definition: cavs.h:56
int mbx
Definition: cavs.h:182
struct AVSContext AVSContext
ScanTable scantable
Definition: cavs.h:216
uint8_t
int ref_flag
Definition: cavs.h:181
uint8_t * top_qp
Definition: cavs.h:187
int8_t rltab[59][3]
Definition: cavs.h:149
uint8_t * top_border_y
intra prediction is done with un-deblocked samples they are saved here before deblocking the MB ...
Definition: cavs.h:220
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:201
int width
Definition: cavs.h:174
cavs_intra_chroma
Definition: cavs.h:92
cavs_vector * top_mv[2]
Definition: cavs.h:202
int8_t golomb_order
Definition: cavs.h:151
bitstream reader API header.
int dist[2]
temporal distances from current frame to ref frames
Definition: cavs.h:169
int mby
Definition: cavs.h:182
GetBitContext gb
Definition: cavs.h:166
uint8_t * cy
Definition: cavs.h:185
DCTELEM * block
Definition: cavs.h:237
int ff_cavs_next_mb(AVSContext *h)
save predictors for later macroblocks and increase macroblock address
Definition: cavs.c:626
void ff_cavs_load_intra_pred_chroma(AVSContext *h)
Definition: cavs.c:228
uint8_t topleft_border_u
Definition: cavs.h:223
uint8_t * cu
Definition: cavs.h:185
Definition: cavs.h:65
int scale_den[2]
for scaling neighbouring MVs
Definition: cavs.h:232
int ff_cavs_end(AVCodecContext *avctx)
Definition: cavs.c:762
int progressive
Definition: cavs.h:176
AVSFrame cur
currently decoded frame
Definition: cavs.h:167
Definition: cavs.h:76
CAVSDSPContext cdsp
Definition: cavs.h:165
uint8_t left_border_y[26]
Definition: cavs.h:221
int c_stride
Definition: cavs.h:211
Definition: cavs.h:63
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:533
int skip_mode_flag
select between skip_count or one skip_flag per MB
Definition: cavs.h:178
uint8_t * cv
current MB sample pointers
Definition: cavs.h:185
void ff_cavs_init_top_lines(AVSContext *h)
some predictions require data from the top-neighbouring macroblock.
Definition: cavs.c:703
int stream_revision
0 for samples from 2006, 1 for rm52j encoder
Definition: cavs.h:175
int l_stride
Definition: cavs.h:211
Definition: cavs.h:114
static DCTELEM block[64]
Definition: dct-test.c:169
cavs_sub_mb
Definition: cavs.h:74
int16_t dist
Definition: cavs.h:144
uint8_t left_border_u[10]
Definition: cavs.h:221
const uint8_t ff_cavs_partition_flags[30]
Definition: cavsdata.c:24
void ff_cavs_init_pic(AVSContext *h)
Definition: cavs.c:670
void(* intra_pred_l[8])(uint8_t *d, uint8_t *top, uint8_t *left, int stride)
Definition: cavs.h:225
const cavs_vector ff_cavs_dir_mv
mark block as "no prediction from this direction" e.g.
Definition: cavsdata.c:59
Definition: cavs.h:78
DSPContext dsp
Definition: cavs.h:163
uint8_t left_border_v[10]
Definition: cavs.h:221
int level
Definition: cavs.h:171
static const int8_t mv[256][2]
Definition: 4xm.c:73
Definition: cavs.h:113
int8_t max_run
Definition: cavs.h:153
void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type)
Definition: cavs.c:463
main external API structure.
Definition: avcodec.h:1339
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
int sym_factor
for scaling in symmetrical B block
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:209
cavs_block
Definition: cavs.h:111
Definition: cavs.h:77
int * top_pred_Y
Definition: cavs.h:210
int16_t ref
Definition: cavs.h:145
int8_t level_add[27]
Definition: cavs.h:150
int height
Definition: cavs.h:174
void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type)
in-loop deblocking filter for a single macroblock
Definition: cavs.c:105
int alpha_offset
Definition: cavs.h:180
Definition: cavs.h:62
short DCTELEM
Definition: dsputil.h:39
int profile
Definition: cavs.h:171
int stc
last start code
Definition: cavs.h:184
uint8_t topleft_border_v
Definition: cavs.h:223
int qp_fixed
Definition: cavs.h:214
Definition: cavs.h:156
cavs_mv_pred
Definition: cavs.h:102
int flags
availability flags of neighbouring macroblocks
Definition: cavs.h:183
Definition: cavs.h:61
int luma_scan[4]
Definition: cavs.h:212
int mb_height
Definition: cavs.h:173
Core video DSP helper functions.
DSP utils.
int beta_offset
Definition: cavs.h:180
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:80
#define MV_STRIDE
Definition: cavs.h:57
Definition: cavs.h:115
static void set_mvs(cavs_vector *mv, enum cavs_block size)
Definition: cavs.h:244
Definition: cavs.h:66
int aspect_ratio
Definition: cavs.h:172
int16_t y
Definition: cavs.h:143
VideoDSPContext vdsp
Definition: cavs.h:164
int mb_width
Definition: cavs.h:173
AVFrame * f
Definition: cavs.h:157
int low_delay
Definition: cavs.h:170
uint8_t * col_type_base
Definition: cavs.h:227
DSPContext.
Definition: dsputil.h:194