Libav
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 "h264chroma.h"
28 #include "get_bits.h"
29 #include "videodsp.h"
30 
31 #define SLICE_MAX_START_CODE 0x000001af
32 #define EXT_START_CODE 0x000001b5
33 #define USER_START_CODE 0x000001b2
34 #define CAVS_START_CODE 0x000001b0
35 #define PIC_I_START_CODE 0x000001b3
36 #define PIC_PB_START_CODE 0x000001b6
37 
38 #define A_AVAIL 1
39 #define B_AVAIL 2
40 #define C_AVAIL 4
41 #define D_AVAIL 8
42 #define NOT_AVAIL -1
43 #define REF_INTRA -2
44 #define REF_DIR -3
45 
46 #define ESCAPE_CODE 59
47 
48 #define FWD0 0x01
49 #define FWD1 0x02
50 #define BWD0 0x04
51 #define BWD1 0x08
52 #define SYM0 0x10
53 #define SYM1 0x20
54 #define SPLITH 0x40
55 #define SPLITV 0x80
56 
57 #define MV_BWD_OFFS 12
58 #define MV_STRIDE 4
59 
60 enum cavs_mb {
61  I_8X8 = 0,
72  B_8X8 = 29
73 };
74 
80 };
81 
91 };
92 
101 };
102 
110 };
111 
117 };
118 
140 };
141 
142 DECLARE_ALIGNED(8, typedef, struct) {
143  int16_t x;
144  int16_t y;
145  int16_t dist;
146  int16_t ref;
147 } cavs_vector;
148 
149 struct dec_2dvlc {
150  int8_t rltab[59][3];
151  int8_t level_add[27];
152  int8_t golomb_order;
154  int8_t max_run;
155 };
156 
157 typedef struct AVSFrame {
159  int poc;
160 } AVSFrame;
161 
162 typedef struct AVSContext {
171  int dist[2];
176  int width, height;
183  int ref_flag;
184  int mbx, mby, mbidx;
185  int flags;
186  int stc;
187  uint8_t *cy, *cu, *cv;
188  int left_qp;
190 
203  cavs_vector mv[2*4*3];
206 
211  int pred_mode_Y[3*3];
213  ptrdiff_t l_stride, c_stride;
214  int luma_scan[4];
215  int qp;
216  int qp_fixed;
217  int cbp;
219 
226 
227  void (*intra_pred_l[8])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
228  void (*intra_pred_c[7])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
230 
231  /* scaling factors for MV prediction */
233  int direct_den[2];
234  int scale_den[2];
235 
237 
239  int16_t *block;
240 } AVSContext;
241 
242 extern const uint8_t ff_cavs_partition_flags[30];
243 extern const cavs_vector ff_cavs_intra_mv;
244 extern const cavs_vector ff_cavs_dir_mv;
245 
246 static inline void set_mvs(cavs_vector *mv, enum cavs_block size) {
247  switch(size) {
248  case BLK_16X16:
249  mv[MV_STRIDE ] = mv[0];
250  mv[MV_STRIDE+1] = mv[0];
251  case BLK_16X8:
252  mv[1] = mv[0];
253  break;
254  case BLK_8X16:
255  mv[MV_STRIDE] = mv[0];
256  break;
257  }
258 }
259 
260 void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type);
262  int block);
264 void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv);
265 void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type);
266 void ff_cavs_mv(AVSContext *h, enum cavs_mv_loc nP, enum cavs_mv_loc nC,
267  enum cavs_mv_pred mode, enum cavs_block size, int ref);
268 void ff_cavs_init_mb(AVSContext *h);
272 int ff_cavs_init(AVCodecContext *avctx);
273 int ff_cavs_end (AVCodecContext *avctx);
274 
275 #endif /* AVCODEC_CAVS_H */
cavs_mv_loc
Definition: cavs.h:119
void(* intra_pred_c[7])(uint8_t *d, uint8_t *top, uint8_t *left, int stride)
Definition: cavs.h:228
uint8_t * top_border_v
Definition: cavs.h:222
int pic_structure
Definition: cavs.h:179
uint8_t * top_border_u
Definition: cavs.h:222
uint8_t topleft_border_y
Definition: cavs.h:225
cavs_intra_luma
Definition: cavs.h:82
Definition: cavs.h:72
int got_keyframe
Definition: cavs.h:238
AVCodecContext * avctx
Definition: cavs.h:163
int inc_limit
Definition: cavs.h:153
int size
This structure describes decoded (raw) audio or video data.
Definition: frame.h:107
uint8_t * edge_emu_buffer
Definition: cavs.h:236
int direct_den[2]
for scaling in direct B block
Definition: cavs.h:233
int cbp
Definition: cavs.h:217
const cavs_vector ff_cavs_intra_mv
mark block as using intra prediction
Definition: cavsdata.c:62
Definition: cavs.h:61
int16_t x
Definition: cavs.h:143
int mbidx
macroblock coordinates
Definition: cavs.h:184
cavs_vector * col_mv
Definition: cavs.h:205
int poc
Definition: cavs.h:159
Scantable.
Definition: dsputil.h:111
Definition: cavs.h:68
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:58
void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv)
Definition: cavs.c:351
Definition: cavs.h:65
int qp
Definition: cavs.h:215
int loop_filter_disable
Definition: cavs.h:181
int stride
Definition: mace.c:144
int left_qp
Definition: cavs.h:188
void ff_cavs_init_mb(AVSContext *h)
initialise predictors for motion vectors and intra prediction
Definition: cavs.c:619
int ff_cavs_init(AVCodecContext *avctx)
Definition: cavs.c:757
uint8_t intern_border_y[26]
Definition: cavs.h:224
void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left, int block)
Definition: cavs.c:178
cavs_mb
Definition: cavs.h:60
#define MV_BWD_OFFS
Definition: cavs.h:57
int mbx
Definition: cavs.h:184
ScanTable scantable
Definition: cavs.h:218
uint8_t
int ref_flag
Definition: cavs.h:183
uint8_t * top_qp
Definition: cavs.h:189
int8_t rltab[59][3]
Definition: cavs.h:150
uint8_t * top_border_y
intra prediction is done with un-deblocked samples they are saved here before deblocking the MB ...
Definition: cavs.h:222
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:203
int width
Definition: cavs.h:176
cavs_intra_chroma
Definition: cavs.h:93
cavs_vector * top_mv[2]
Definition: cavs.h:204
int8_t golomb_order
Definition: cavs.h:152
bitstream reader API header.
int dist[2]
temporal distances from current frame to ref frames
Definition: cavs.h:171
int mby
Definition: cavs.h:184
GetBitContext gb
Definition: cavs.h:168
uint8_t * cy
Definition: cavs.h:187
int ff_cavs_next_mb(AVSContext *h)
save predictors for later macroblocks and increase macroblock address
Definition: cavs.c:660
void ff_cavs_load_intra_pred_chroma(AVSContext *h)
Definition: cavs.c:229
uint8_t topleft_border_u
Definition: cavs.h:225
uint8_t * cu
Definition: cavs.h:187
Definition: cavs.h:66
int scale_den[2]
for scaling neighbouring MVs
Definition: cavs.h:234
int ff_cavs_end(AVCodecContext *avctx)
Definition: cavs.c:802
int progressive
Definition: cavs.h:178
AVSFrame cur
currently decoded frame
Definition: cavs.h:169
Definition: cavs.h:77
CAVSDSPContext cdsp
Definition: cavs.h:167
uint8_t left_border_y[26]
Definition: cavs.h:223
Definition: cavs.h:64
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:564
int skip_mode_flag
select between skip_count or one skip_flag per MB
Definition: cavs.h:180
uint8_t * cv
current MB sample pointers
Definition: cavs.h:187
void ff_cavs_init_top_lines(AVSContext *h)
some predictions require data from the top-neighbouring macroblock.
Definition: cavs.c:739
int stream_revision
0 for samples from 2006, 1 for rm52j encoder
Definition: cavs.h:177
Definition: cavs.h:115
cavs_sub_mb
Definition: cavs.h:75
int16_t dist
Definition: cavs.h:145
uint8_t left_border_u[10]
Definition: cavs.h:223
const uint8_t ff_cavs_partition_flags[30]
Definition: cavsdata.c:24
int16_t * block
Definition: cavs.h:239
void ff_cavs_init_pic(AVSContext *h)
Definition: cavs.c:705
void(* intra_pred_l[8])(uint8_t *d, uint8_t *top, uint8_t *left, int stride)
Definition: cavs.h:227
const cavs_vector ff_cavs_dir_mv
mark block as "no prediction from this direction" e.g.
Definition: cavsdata.c:59
Definition: cavs.h:79
DSPContext dsp
Definition: cavs.h:164
uint8_t left_border_v[10]
Definition: cavs.h:223
int level
Definition: cavs.h:173
static const int8_t mv[256][2]
Definition: 4xm.c:72
Definition: cavs.h:114
int8_t max_run
Definition: cavs.h:154
void ff_cavs_inter(AVSContext *h, enum cavs_mb mb_type)
Definition: cavs.c:482
main external API structure.
Definition: avcodec.h:1054
static void(WINAPI *cond_broadcast)(pthread_cond_t *cond)
int sym_factor
for scaling in symmetrical B block
Definition: cavs.h:232
int pred_mode_Y[3 *3]
luma pred mode cache 0: – B2 B3 3: A1 X0 X1 6: A3 X2 X3
Definition: cavs.h:211
cavs_block
Definition: cavs.h:112
Definition: cavs.h:78
int * top_pred_Y
Definition: cavs.h:212
int16_t ref
Definition: cavs.h:146
int8_t level_add[27]
Definition: cavs.h:151
int height
Definition: cavs.h:176
void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type)
in-loop deblocking filter for a single macroblock
Definition: cavs.c:106
int alpha_offset
Definition: cavs.h:182
Definition: cavs.h:63
int profile
Definition: cavs.h:173
ptrdiff_t c_stride
Definition: cavs.h:213
int stc
last start code
Definition: cavs.h:186
uint8_t topleft_border_v
Definition: cavs.h:225
int qp_fixed
Definition: cavs.h:216
Definition: cavs.h:157
cavs_mv_pred
Definition: cavs.h:103
int flags
availability flags of neighbouring macroblocks
Definition: cavs.h:185
ptrdiff_t l_stride
Definition: cavs.h:213
Definition: cavs.h:62
int luma_scan[4]
Definition: cavs.h:214
int mb_height
Definition: cavs.h:175
Core video DSP helper functions.
DSP utils.
int beta_offset
Definition: cavs.h:182
Decoded Picture Buffer (DPB).
Definition: vaapi_h264.c:80
#define MV_STRIDE
Definition: cavs.h:58
Definition: cavs.h:116
static void set_mvs(cavs_vector *mv, enum cavs_block size)
Definition: cavs.h:246
Definition: cavs.h:67
int aspect_ratio
Definition: cavs.h:174
int16_t y
Definition: cavs.h:144
VideoDSPContext vdsp
Definition: cavs.h:166
H264ChromaContext h264chroma
Definition: cavs.h:165
int mb_width
Definition: cavs.h:175
AVFrame * f
Definition: cavs.h:158
int low_delay
Definition: cavs.h:172
uint8_t * col_type_base
Definition: cavs.h:229
DSPContext.
Definition: dsputil.h:124
static int16_t block[64]
Definition: dct-test.c:170