FFmpeg  1.2.12
vp8.h
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1 /*
2  * VP8 compatible video decoder
3  *
4  * Copyright (C) 2010 David Conrad
5  * Copyright (C) 2010 Ronald S. Bultje
6  * Copyright (C) 2010 Jason Garrett-Glaser
7  * Copyright (C) 2012 Daniel Kang
8  *
9  * This file is part of FFmpeg.
10  *
11  * FFmpeg is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2.1 of the License, or (at your option) any later version.
15  *
16  * FFmpeg is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with FFmpeg; if not, write to the Free Software
23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24  */
25 
26 #ifndef AVCODEC_VP8_H
27 #define AVCODEC_VP8_H
28 
29 #include "vp56.h"
30 #include "vp56data.h"
31 #include "vp8dsp.h"
32 #include "h264pred.h"
33 #if HAVE_PTHREADS
34 #include <pthread.h>
35 #elif HAVE_W32THREADS
36 #include "w32pthreads.h"
37 #elif HAVE_OS2THREADS
38 #include "os2threads.h"
39 #endif
40 
41 #define VP8_MAX_QUANT 127
42 
43 enum dct_token {
56 
58 };
59 
60 // used to signal 4x4 intra pred in luma MBs
61 #define MODE_I4x4 4
62 
67 };
68 
75 };
76 
77 typedef struct VP8FilterStrength {
82 
83 typedef struct VP8Macroblock {
85  // todo: make it possible to check for at least (i4x4 or split_mv)
86  // in one op. are others needed?
95  VP56mv bmv[16];
97 
98 typedef struct VP8ThreadData {
99  DECLARE_ALIGNED(16, int16_t, block)[6][4][16];
100  DECLARE_ALIGNED(16, int16_t, block_dc)[16];
117 #if HAVE_THREADS
118  pthread_mutex_t lock;
119  pthread_cond_t cond;
120 #endif
121  int thread_mb_pos; // (mb_y << 16) | (mb_x & 0xFFFF)
122  int wait_mb_pos; // What the current thread is waiting on.
125 } VP8ThreadData;
126 
127 #define MAX_THREADS 8
128 typedef struct VP8Context {
135 
136  uint16_t mb_width; /* number of horizontal MB */
137  uint16_t mb_height; /* number of vertical MB */
138  int linesize;
140 
147 
148  int8_t sign_bias[4];
149  int ref_count[3];
150 
156  struct {
160  int8_t base_quant[4];
161  int8_t filter_level[4];
162  } segmentation;
163 
164  struct {
168  } filter;
169 
171 
174 
180  struct {
181  // [0] - DC qmul [1] - AC qmul
182  int16_t luma_qmul[2];
183  int16_t luma_dc_qmul[2];
184  int16_t chroma_qmul[2];
185  } qmat[4];
186 
187  struct {
188  uint8_t enabled;
189 
200 
208  int8_t ref[4];
209  } lf_delta;
210 
211  uint8_t (*top_border)[16+8+8];
213 
215 
222  struct {
231  uint8_t mvc[2][19];
232  } prob[2];
233 
239 
245 
257 
267  int num_jobs;
274 } VP8Context;
275 
276 #endif /* AVCODEC_VP8_H */