FFmpeg
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 Fiona 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 <stdatomic.h>
30 
31 #include "libavutil/buffer.h"
32 #include "libavutil/mem_internal.h"
33 #include "libavutil/thread.h"
34 
35 #include "h264pred.h"
36 #include "thread.h"
37 #include "vp56.h"
38 #include "vp8dsp.h"
39 
40 #define VP8_MAX_QUANT 127
41 
42 enum dct_token {
55 
57 };
58 
59 // used to signal 4x4 intra pred in luma MBs
60 #define MODE_I4x4 4
61 
66 };
67 
69  VP8_SPLITMVMODE_16x8 = 0, ///< 2 16x8 blocks (vertical)
70  VP8_SPLITMVMODE_8x16, ///< 2 8x16 blocks (horizontal)
71  VP8_SPLITMVMODE_8x8, ///< 2x2 blocks of 8x8px each
72  VP8_SPLITMVMODE_4x4, ///< 4x4 blocks of 4x4px each
73  VP8_SPLITMVMODE_NONE, ///< (only used in prediction) no split MVs
74 };
75 
76 typedef struct VP8FilterStrength {
77  uint8_t filter_level;
78  uint8_t inner_limit;
79  uint8_t inner_filter;
81 
82 typedef struct VP8Macroblock {
83  uint8_t skip;
84  // TODO: make it possible to check for at least (i4x4 or split_mv)
85  // in one op. are others needed?
86  uint8_t mode;
87  uint8_t ref_frame;
88  uint8_t partitioning;
90  uint8_t segment;
91  uint8_t intra4x4_pred_mode_mb[16];
94  VP56mv bmv[16];
96 
97 typedef struct VP8intmv {
98  int x;
99  int y;
100 } VP8intmv;
101 
102 typedef struct VP8mvbounds {
105 } VP8mvbounds;
106 
107 typedef struct VP8ThreadData {
108  DECLARE_ALIGNED(16, int16_t, block)[6][4][16];
109  DECLARE_ALIGNED(16, int16_t, block_dc)[16];
110  /**
111  * This is the index plus one of the last non-zero coeff
112  * for each of the blocks in the current macroblock.
113  * So, 0 -> no coeffs
114  * 1 -> dc-only (special transform)
115  * 2+-> full transform
116  */
118  /**
119  * For coeff decode, we need to know whether the above block had non-zero
120  * coefficients. This means for each macroblock, we need data for 4 luma
121  * blocks, 2 u blocks, 2 v blocks, and the luma dc block, for a total of 9
122  * per macroblock. We keep the last row in top_nnz.
123  */
124  DECLARE_ALIGNED(8, uint8_t, left_nnz)[9];
126 #if HAVE_THREADS
129 #endif
130  atomic_int thread_mb_pos; // (mb_y << 16) | (mb_x & 0xFFFF)
131  atomic_int wait_mb_pos; // What the current thread is waiting on.
132 
133 #define EDGE_EMU_LINESIZE 32
137 } VP8ThreadData;
138 
139 typedef struct VP8Frame {
142 
145 } VP8Frame;
146 
147 #define MAX_THREADS 8
148 typedef struct VP8Context {
153 
158 
159  uint16_t mb_width; /* number of horizontal MB */
160  uint16_t mb_height; /* number of vertical MB */
161  ptrdiff_t linesize;
162  ptrdiff_t uvlinesize;
163 
164  uint8_t keyframe;
165  uint8_t deblock_filter;
166  uint8_t mbskip_enabled;
167  uint8_t profile;
169 
170  int8_t sign_bias[4]; ///< one state [0, 1] per ref frame type
171  int ref_count[3];
172 
173  /**
174  * Base parameters for segmentation, i.e. per-macroblock parameters.
175  * These must be kept unchanged even if segmentation is not used for
176  * a frame, since the values persist between interframes.
177  */
178  struct {
179  uint8_t enabled;
180  uint8_t absolute_vals;
181  uint8_t update_map;
183  int8_t base_quant[4];
184  int8_t filter_level[4]; ///< base loop filter level
185  } segmentation;
186 
187  struct {
188  uint8_t simple;
189  uint8_t level;
190  uint8_t sharpness;
191  } filter;
192 
194 
197 
198  /**
199  * Macroblocks can have one of 4 different quants in a frame when
200  * segmentation is enabled.
201  * If segmentation is disabled, only the first segment's values are used.
202  */
203  struct {
204  // [0] - DC qmul [1] - AC qmul
205  int16_t luma_qmul[2];
206  int16_t luma_dc_qmul[2]; ///< luma dc-only block quant
207  int16_t chroma_qmul[2];
208  } qmat[4];
209 
210  // Raw quantisation values, which may be needed by hwaccel decode.
211  struct {
212  int yac_qi;
218  } quant;
219 
220  struct {
221  uint8_t enabled; ///< whether each mb can have a different strength based on mode/ref
222  uint8_t update;
223 
224  /**
225  * filter strength adjustment for the following macroblock modes:
226  * [0-3] - i16x16 (always zero)
227  * [4] - i4x4
228  * [5] - zero mv
229  * [6] - inter modes except for zero or split mv
230  * [7] - split mv
231  * i16x16 modes never have any adjustment
232  */
233  int8_t mode[VP8_MVMODE_SPLIT + 1];
234 
235  /**
236  * filter strength adjustment for macroblocks that reference:
237  * [0] - intra / VP56_FRAME_CURRENT
238  * [1] - VP56_FRAME_PREVIOUS
239  * [2] - VP56_FRAME_GOLDEN
240  * [3] - altref / VP56_FRAME_GOLDEN2
241  */
242  int8_t ref[4];
243  } lf_delta;
244 
245  uint8_t (*top_border)[16 + 8 + 8];
246  uint8_t (*top_nnz)[9];
247 
248  VP56RangeCoder c; ///< header context, includes mb modes and motion vectors
249 
250  /* This contains the entropy coder state at the end of the header
251  * block, in the form specified by the standard. For use by
252  * hwaccels, so that a hardware decoder has the information to
253  * start decoding at the macroblock layer.
254  */
255  struct {
256  const uint8_t *input;
257  uint32_t range;
258  uint32_t value;
261 
263 
264  /**
265  * These are all of the updatable probabilities for binary decisions.
266  * They are only implicitly reset on keyframes, making it quite likely
267  * for an interframe to desync if a prior frame's header was corrupt
268  * or missing outright!
269  */
270  struct {
271  uint8_t segmentid[3];
272  uint8_t mbskip;
273  uint8_t intra;
274  uint8_t last;
275  uint8_t golden;
276  uint8_t pred16x16[4];
277  uint8_t pred8x8c[3];
278  uint8_t token[4][16][3][NUM_DCT_TOKENS - 1];
279  uint8_t mvc[2][19];
280  uint8_t scan[16];
281  } prob[2];
282 
285  int update_last; ///< update VP56_FRAME_PREVIOUS with the current one
286  int update_golden; ///< VP56_FRAME_NONE if not updated, or which frame to copy if so
288 
289  /**
290  * If this flag is not set, all the probability updates
291  * are discarded after this frame is decoded.
292  */
294 
295  /**
296  * All coefficients are contained in separate arith coding contexts.
297  * There can be 1, 2, 4, or 8 of these after the header context.
298  */
307 
308  uint8_t colorspace; ///< 0 is the only value allowed (meaning bt601)
309  uint8_t fullrange; ///< whether we can skip clamping in dsp functions
310 
311  int num_jobs;
312  /**
313  * This describes the macroblock memory layout.
314  * 0 -> Only width+height*2+1 macroblocks allocated (frame/single thread).
315  * 1 -> Macroblocks for entire frame allocated (sliced thread).
316  */
318 
319  int (*decode_mb_row_no_filter)(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr);
320  void (*filter_mb_row)(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr);
321 
322  int vp7;
323 
324  /**
325  * Fade bit present in bitstream (VP7)
326  */
328 
329  /**
330  * Interframe DC prediction (VP7)
331  * [0] VP56_FRAME_PREVIOUS
332  * [1] VP56_FRAME_GOLDEN
333  */
334  uint16_t inter_dc_pred[2][2];
335 
336  /**
337  * Macroblock features (VP7)
338  */
339  uint8_t feature_enabled[4];
341  uint8_t feature_index_prob[4][3];
342  uint8_t feature_value[4][4];
343 } VP8Context;
344 
346 
347 int ff_vp8_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
348  AVPacket *avpkt);
349 
351 
352 #endif /* AVCODEC_VP8_H */
VP8Context::num_jobs
int num_jobs
Definition: vp8.h:311
VP8ThreadData::thread_mb_pos
atomic_int thread_mb_pos
Definition: vp8.h:130
VP8Macroblock::intra4x4_pred_mode_mb
uint8_t intra4x4_pred_mode_mb[16]
Definition: vp8.h:91
pthread_mutex_t
_fmutex pthread_mutex_t
Definition: os2threads.h:53
VP8Context::prev_frame
VP8Frame * prev_frame
Definition: vp8.h:157
VP8Context::coeff_partition_size
int coeff_partition_size[8]
Definition: vp8.h:301
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
VP8Context::intra4x4_pred_mode_top
uint8_t * intra4x4_pred_mode_top
Definition: vp8.h:195
VP8Macroblock::partitioning
uint8_t partitioning
Definition: vp8.h:88
VP8Context::macroblocks_base
VP8Macroblock * macroblocks_base
Definition: vp8.h:283
mem_internal.h
VP8Context::top_border
uint8_t(* top_border)[16+8+8]
Definition: vp8.h:245
thread.h
DCT_2
@ DCT_2
Definition: vp8.h:45
VP8FilterStrength::inner_filter
uint8_t inner_filter
Definition: vp8.h:79
DCT_4
@ DCT_4
Definition: vp8.h:47
VP8Context::thread_data
VP8ThreadData * thread_data
Definition: vp8.h:149
VP8Frame::seg_map
AVBufferRef * seg_map
Definition: vp8.h:141
VP8Context::segmentid
uint8_t segmentid[3]
Definition: vp8.h:271
VP8Context::top_nnz
uint8_t(* top_nnz)[9]
Definition: vp8.h:246
VP8Context::num_coeff_partitions
int num_coeff_partitions
All coefficients are contained in separate arith coding contexts.
Definition: vp8.h:299
inter_mvmode
inter_mvmode
Definition: vp8.h:62
VP8Context::put_pixels_tab
vp8_mc_func put_pixels_tab[3][3][3]
Definition: vp8.h:305
data
const char data[16]
Definition: mxf.c:142
atomic_int
intptr_t atomic_int
Definition: stdatomic.h:55
VP8intmv::y
int y
Definition: vp8.h:99
VP8Context::uvdc_delta
int uvdc_delta
Definition: vp8.h:216
VP8mvbounds
Definition: vp8.h:102
VP8_SPLITMVMODE_4x4
@ VP8_SPLITMVMODE_4x4
4x4 blocks of 4x4px each
Definition: vp8.h:72
VP8Context::value
uint32_t value
Definition: vp8.h:258
thread.h
VP8intmv
Definition: vp8.h:97
VP8FilterStrength::inner_limit
uint8_t inner_limit
Definition: vp8.h:78
VP8Context::vdsp
VideoDSPContext vdsp
Definition: vp8.h:302
VP8Context::enabled
uint8_t enabled
whether each mb can have a different strength based on mode/ref
Definition: vp8.h:179
VP8Context::framep
VP8Frame * framep[4]
Definition: vp8.h:154
VP8Context::mb_height
uint16_t mb_height
Definition: vp8.h:160
VP8_SPLITMVMODE_8x8
@ VP8_SPLITMVMODE_8x8
2x2 blocks of 8x8px each
Definition: vp8.h:71
VP8Context::hpc
H264PredContext hpc
Definition: vp8.h:304
VP8ThreadData::non_zero_count_cache
uint8_t non_zero_count_cache[6][4]
This is the index plus one of the last non-zero coeff for each of the blocks in the current macrobloc...
Definition: vp8.h:117
VP8Context::simple
uint8_t simple
Definition: vp8.h:188
VP8Context::feature_enabled
uint8_t feature_enabled[4]
Macroblock features (VP7)
Definition: vp8.h:339
VP8Context::luma_qmul
int16_t luma_qmul[2]
Definition: vp8.h:205
VP8Macroblock::bmv
VP56mv bmv[16]
Definition: vp8.h:94
ff_vp8_decode_free
int ff_vp8_decode_free(AVCodecContext *avctx)
Definition: vp8.c:2824
VP8Context::actually_webp
int actually_webp
Definition: vp8.h:152
DCT_CAT4
@ DCT_CAT4
Definition: vp8.h:51
VP8_SPLITMVMODE_16x8
@ VP8_SPLITMVMODE_16x8
2 16x8 blocks (vertical)
Definition: vp8.h:69
VP8Context::deblock_filter
uint8_t deblock_filter
Definition: vp8.h:165
VP8Macroblock::skip
uint8_t skip
Definition: vp8.h:83
VP8Context::ref
int8_t ref[4]
filter strength adjustment for macroblocks that reference: [0] - intra / VP56_FRAME_CURRENT [1] - VP5...
Definition: vp8.h:242
VP8Context::mbskip
uint8_t mbskip
Definition: vp8.h:272
VP8Context::c
VP56RangeCoder c
header context, includes mb modes and motion vectors
Definition: vp8.h:248
vp8dsp.h
VP8Context::update_golden
int update_golden
VP56_FRAME_NONE if not updated, or which frame to copy if so.
Definition: vp8.h:286
VP8Context::mbskip_enabled
uint8_t mbskip_enabled
Definition: vp8.h:166
VP8Context::uvlinesize
ptrdiff_t uvlinesize
Definition: vp8.h:162
VP8ThreadData::left_nnz
uint8_t left_nnz[9]
For coeff decode, we need to know whether the above block had non-zero coefficients.
Definition: vp8.h:124
VP8Context::y2ac_delta
int y2ac_delta
Definition: vp8.h:215
DCT_CAT3
@ DCT_CAT3
Definition: vp8.h:50
VP8Context::mv_bounds
VP8mvbounds mv_bounds
Definition: vp8.h:168
VP8Context::chroma_qmul
int16_t chroma_qmul[2]
Definition: vp8.h:207
VP8Frame::tf
ThreadFrame tf
Definition: vp8.h:140
VP8ThreadData::filter_strength
VP8FilterStrength * filter_strength
Definition: vp8.h:135
DCT_EOB
@ DCT_EOB
Definition: vp8.h:54
VP8Context::yac_qi
int yac_qi
Definition: vp8.h:212
inter_splitmvmode
inter_splitmvmode
Definition: vp8.h:68
VP8Context::vp8dsp
VP8DSPContext vp8dsp
Definition: vp8.h:303
VP8Context::sharpness
uint8_t sharpness
Definition: vp8.h:190
VP56mv
Definition: vp56.h:68
VP8Context::keyframe
uint8_t keyframe
Definition: vp8.h:164
VP8Context::token
uint8_t token[4][16][3][NUM_DCT_TOKENS - 1]
Definition: vp8.h:278
DCT_0
@ DCT_0
Definition: vp8.h:43
VP8_SPLITMVMODE_8x16
@ VP8_SPLITMVMODE_8x16
2 8x16 blocks (horizontal)
Definition: vp8.h:70
VP8Context::avctx
AVCodecContext * avctx
Definition: vp8.h:150
dct_token
dct_token
Definition: vp8.h:42
VP8Context::curframe
VP8Frame * curframe
Definition: vp8.h:156
VP8Context::pred16x16
uint8_t pred16x16[4]
Definition: vp8.h:276
vp56.h
ff_vp8_decode_init
int ff_vp8_decode_init(AVCodecContext *avctx)
Definition: vp8.c:2894
VP8Context::update_map
uint8_t update_map
Definition: vp8.h:181
DCT_CAT1
@ DCT_CAT1
Definition: vp8.h:48
VP8Context::last
uint8_t last
Definition: vp8.h:274
VP8Context::fade_present
int fade_present
Fade bit present in bitstream (VP7)
Definition: vp8.h:327
VP8Context::bit_count
int bit_count
Definition: vp8.h:259
VP8Context::filter_level
int8_t filter_level[4]
base loop filter level
Definition: vp8.h:184
VP8FilterStrength
Definition: vp8.h:76
VP8Context::update
uint8_t update
Definition: vp8.h:222
VP8Context::mvc
uint8_t mvc[2][19]
Definition: vp8.h:279
VP8Context::linesize
ptrdiff_t linesize
Definition: vp8.h:161
NUM_DCT_TOKENS
@ NUM_DCT_TOKENS
Definition: vp8.h:56
VP8Context::luma_dc_qmul
int16_t luma_dc_qmul[2]
luma dc-only block quant
Definition: vp8.h:206
VP8Frame::hwaccel_priv_buf
AVBufferRef * hwaccel_priv_buf
Definition: vp8.h:143
VP8Context::mb_width
uint16_t mb_width
Definition: vp8.h:159
VP8Context::macroblocks
VP8Macroblock * macroblocks
Definition: vp8.h:193
VP8Frame
Definition: vp8.h:139
VP8Context::frames
VP8Frame frames[5]
Definition: vp8.h:306
vp8_mc_func
void(* vp8_mc_func)(uint8_t *dst, ptrdiff_t dstStride, uint8_t *src, ptrdiff_t srcStride, int h, int x, int y)
Definition: vp8dsp.h:33
VP8Context::feature_index_prob
uint8_t feature_index_prob[4][3]
Definition: vp8.h:341
VP8Context::update_probabilities
int update_probabilities
If this flag is not set, all the probability updates are discarded after this frame is decoded.
Definition: vp8.h:293
VP8DSPContext
Definition: vp8dsp.h:37
VP8Context::intra4x4_pred_mode_left
uint8_t intra4x4_pred_mode_left[4]
Definition: vp8.h:196
VP8Context::pred8x8c
uint8_t pred8x8c[3]
Definition: vp8.h:277
VP8Context::range
uint32_t range
Definition: vp8.h:257
VP8ThreadData::thread_nr
int thread_nr
Definition: vp8.h:125
EDGE_EMU_LINESIZE
#define EDGE_EMU_LINESIZE
Definition: vp8.h:133
VP8Macroblock::mv
VP56mv mv
Definition: vp8.h:93
VP8Context::colorspace
uint8_t colorspace
0 is the only value allowed (meaning bt601)
Definition: vp8.h:308
VP8Macroblock::ref_frame
uint8_t ref_frame
Definition: vp8.h:87
VP8FilterStrength::filter_level
uint8_t filter_level
Definition: vp8.h:77
VP8Context::mb_layout
int mb_layout
This describes the macroblock memory layout.
Definition: vp8.h:317
VP8Context::update_last
int update_last
update VP56_FRAME_PREVIOUS with the current one
Definition: vp8.h:285
VP8Context::coeff_partition
VP56RangeCoder coeff_partition[8]
Definition: vp8.h:300
VP8Context::decode_mb_row_no_filter
int(* decode_mb_row_no_filter)(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
Definition: vp8.h:319
buffer.h
DCT_1
@ DCT_1
Definition: vp8.h:44
VP8ThreadData::mv_bounds
VP8mvbounds mv_bounds
Definition: vp8.h:136
VP8Context::prob
struct VP8Context::@174 prob[2]
These are all of the updatable probabilities for binary decisions.
VP8ThreadData
Definition: vp8.h:107
VP8Macroblock::chroma_pred_mode
uint8_t chroma_pred_mode
Definition: vp8.h:89
VP8Context::update_feature_data
uint8_t update_feature_data
Definition: vp8.h:182
VP8Context::invisible
int invisible
Definition: vp8.h:284
MODE_I4x4
#define MODE_I4x4
Definition: vp8.h:60
VP8Context::ref_count
int ref_count[3]
Definition: vp8.h:171
VP8ThreadData::edge_emu_buffer
uint8_t edge_emu_buffer[21 *EDGE_EMU_LINESIZE]
Definition: vp8.h:134
VP8Context::lf_delta
struct VP8Context::@172 lf_delta
DCT_CAT5
@ DCT_CAT5
Definition: vp8.h:52
VP8Context::absolute_vals
uint8_t absolute_vals
Definition: vp8.h:180
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:117
VP8Context::header_partition_size
int header_partition_size
Definition: vp8.h:262
VP8Context::golden
uint8_t golden
Definition: vp8.h:275
VP8Macroblock::segment
uint8_t segment
Definition: vp8.h:90
VP8ThreadData::wait_mb_pos
atomic_int wait_mb_pos
Definition: vp8.h:131
VP8Context::next_framep
VP8Frame * next_framep[4]
Definition: vp8.h:155
VP8Context::quant
struct VP8Context::@171 quant
VP8Context::fullrange
uint8_t fullrange
whether we can skip clamping in dsp functions
Definition: vp8.h:309
VP8Context::filter
struct VP8Context::@169 filter
VP8Context::feature_present_prob
uint8_t feature_present_prob[4]
Definition: vp8.h:340
VP8Context::y2dc_delta
int y2dc_delta
Definition: vp8.h:214
VP8mvbounds::mv_max
VP8intmv mv_max
Definition: vp8.h:104
pthread_cond_t
Definition: os2threads.h:58
VP8Macroblock
Definition: vp8.h:82
ff_vp8_decode_frame
int ff_vp8_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: vp8.c:2810
VP8Context::filter_mb_row
void(* filter_mb_row)(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
Definition: vp8.h:320
VP8_SPLITMVMODE_NONE
@ VP8_SPLITMVMODE_NONE
(only used in prediction) no split MVs
Definition: vp8.h:73
VP8Context::sign_bias
int8_t sign_bias[4]
one state [0, 1] per ref frame type
Definition: vp8.h:170
VP8Context::qmat
struct VP8Context::@170 qmat[4]
Macroblocks can have one of 4 different quants in a frame when segmentation is enabled.
DCT_CAT2
@ DCT_CAT2
Definition: vp8.h:49
VP8Context::profile
uint8_t profile
Definition: vp8.h:167
DCT_3
@ DCT_3
Definition: vp8.h:46
h264pred.h
VP56RangeCoder
Definition: vp56.h:87
AVCodecContext
main external API structure.
Definition: avcodec.h:501
VP8Macroblock::intra4x4_pred_mode_top
uint8_t intra4x4_pred_mode_top[4]
Definition: vp8.h:92
lock
static pthread_mutex_t lock
Definition: ffjni.c:37
ThreadFrame
Definition: thread.h:34
mode
mode
Definition: ebur128.h:83
VP8Macroblock::mode
uint8_t mode
Definition: vp8.h:86
VP8intmv::x
int x
Definition: vp8.h:98
VP8_MVMODE_SPLIT
@ VP8_MVMODE_SPLIT
Definition: vp8.h:65
VideoDSPContext
Definition: videodsp.h:41
H264PredContext
Context for storing H.264 prediction functions.
Definition: h264pred.h:92
VP8mvbounds::mv_min
VP8intmv mv_min
Definition: vp8.h:103
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:84
VP8Context::feature_value
uint8_t feature_value[4][4]
Definition: vp8.h:342
VP8Context::coder_state_at_header_end
struct VP8Context::@173 coder_state_at_header_end
VP8Context::pix_fmt
enum AVPixelFormat pix_fmt
Definition: vp8.h:151
VP8ThreadData::block
int16_t block[6][4][16]
Definition: vp8.h:108
VP8Context::intra
uint8_t intra
Definition: vp8.h:273
AVPacket
This structure stores compressed data.
Definition: packet.h:342
VP8Context::base_quant
int8_t base_quant[4]
Definition: vp8.h:183
VP8Context::ydc_delta
int ydc_delta
Definition: vp8.h:213
VP8Context::vp7
int vp7
Definition: vp8.h:322
DCT_CAT6
@ DCT_CAT6
Definition: vp8.h:53
VP8Context::input
const uint8_t * input
Definition: vp8.h:256
VP8Context
Definition: vp8.h:148
VP8Context::segmentation
struct VP8Context::@168 segmentation
Base parameters for segmentation, i.e.
VP8Context::uvac_delta
int uvac_delta
Definition: vp8.h:217
VP8_MVMODE_ZERO
@ VP8_MVMODE_ZERO
Definition: vp8.h:63
VP8Context::inter_dc_pred
uint16_t inter_dc_pred[2][2]
Interframe DC prediction (VP7) [0] VP56_FRAME_PREVIOUS [1] VP56_FRAME_GOLDEN.
Definition: vp8.h:334
VP8Context::scan
uint8_t scan[16]
Definition: vp8.h:280
VP8Context::level
uint8_t level
Definition: vp8.h:189
VP8Context::update_altref
int update_altref
Definition: vp8.h:287
VP8ThreadData::block_dc
int16_t block_dc[16]
Definition: vp8.h:109
int
int
Definition: ffmpeg_filter.c:156
VP8_MVMODE_MV
@ VP8_MVMODE_MV
Definition: vp8.h:64
cond
int(* cond)(enum AVPixelFormat pix_fmt)
Definition: pixdesc_query.c:28
VP8Frame::hwaccel_picture_private
void * hwaccel_picture_private
Definition: vp8.h:144