Libav
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 "libavutil/buffer.h"
30 
31 #include "vp56.h"
32 #include "vp8dsp.h"
33 #include "h264pred.h"
34 #include "thread.h"
35 #if HAVE_PTHREADS
36 #include <pthread.h>
37 #elif HAVE_W32THREADS
38 #include "compat/w32pthreads.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.
123 
124 #define EDGE_EMU_LINESIZE 32
127 } VP8ThreadData;
128 
129 typedef struct VP8Frame {
132 } VP8Frame;
133 
134 #define MAX_THREADS 8
135 typedef struct VP8Context {
142 
143  uint16_t mb_width; /* number of horizontal MB */
144  uint16_t mb_height; /* number of vertical MB */
145  int linesize;
147 
154 
155  int8_t sign_bias[4];
156  int ref_count[3];
157 
163  struct {
167  int8_t base_quant[4];
168  int8_t filter_level[4];
169  } segmentation;
170 
171  struct {
175  } filter;
176 
178 
181 
187  struct {
188  // [0] - DC qmul [1] - AC qmul
189  int16_t luma_qmul[2];
190  int16_t luma_dc_qmul[2];
191  int16_t chroma_qmul[2];
192  } qmat[4];
193 
194  struct {
195  uint8_t enabled;
196 
207 
215  int8_t ref[4];
216  } lf_delta;
217 
218  uint8_t (*top_border)[16+8+8];
220 
222 
229  struct {
238  uint8_t mvc[2][19];
239  } prob[2];
240 
246 
252 
264 
265  int num_jobs;
272 } VP8Context;
273 
275 
276 int ff_vp8_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
277  AVPacket *avpkt);
278 
280 
281 #endif /* AVCODEC_VP8_H */