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 Libav.
10  *
11  * Libav 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  * Libav 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 Libav; 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 #endif
38 
39 #define VP8_MAX_QUANT 127
40 
41 enum dct_token {
54 
56 };
57 
58 // used to signal 4x4 intra pred in luma MBs
59 #define MODE_I4x4 4
60 
65 };
66 
73 };
74 
75 typedef struct VP8FilterStrength {
80 
81 typedef struct VP8Macroblock {
83  // todo: make it possible to check for at least (i4x4 or split_mv)
84  // in one op. are others needed?
93  VP56mv bmv[16];
95 
96 typedef struct VP8ThreadData {
97  DECLARE_ALIGNED(16, DCTELEM, block)[6][4][16];
115 #if HAVE_THREADS
116  pthread_mutex_t lock;
117  pthread_cond_t cond;
118 #endif
119  int thread_mb_pos; // (mb_y << 16) | (mb_x & 0xFFFF)
120  int wait_mb_pos; // What the current thread is waiting on.
123 } VP8ThreadData;
124 
125 #define MAX_THREADS 8
126 typedef struct VP8Context {
133 
134  uint16_t mb_width; /* number of horizontal MB */
135  uint16_t mb_height; /* number of vertical MB */
136  int linesize;
138 
145 
146  int8_t sign_bias[4];
147  int ref_count[3];
148 
154  struct {
158  int8_t base_quant[4];
159  int8_t filter_level[4];
160  } segmentation;
161 
162  struct {
166  } filter;
167 
169 
172 
178  struct {
179  // [0] - DC qmul [1] - AC qmul
180  int16_t luma_qmul[2];
181  int16_t luma_dc_qmul[2];
182  int16_t chroma_qmul[2];
183  } qmat[4];
184 
185  struct {
186  uint8_t enabled;
187 
198 
206  int8_t ref[4];
207  } lf_delta;
208 
209  uint8_t (*top_border)[16+8+8];
211 
213 
220  struct {
229  uint8_t mvc[2][19];
230  } prob[2];
231 
237 
243 
255 
265  int num_jobs;
272 } VP8Context;
273 
274 #endif /* AVCODEC_VP8_H */