FFmpeg
vp56.h
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1 /*
2  * Copyright (C) 2006 Aurelien Jacobs <aurel@gnuage.org>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * VP5 and VP6 compatible video decoder (common features)
24  */
25 
26 #ifndef AVCODEC_VP56_H
27 #define AVCODEC_VP56_H
28 
29 #include "libavutil/mem_internal.h"
30 
31 #include "avcodec.h"
32 #include "get_bits.h"
33 #include "hpeldsp.h"
34 #include "bytestream.h"
35 #include "h264chroma.h"
36 #include "videodsp.h"
37 #include "vp3dsp.h"
38 #include "vp56dsp.h"
39 
40 typedef struct vp56_context VP56Context;
41 
42 typedef enum {
48 } VP56Frame;
49 
50 typedef enum {
51  VP56_MB_INTER_NOVEC_PF = 0, /**< Inter MB, no vector, from previous frame */
52  VP56_MB_INTRA = 1, /**< Intra MB */
53  VP56_MB_INTER_DELTA_PF = 2, /**< Inter MB, above/left vector + delta, from previous frame */
54  VP56_MB_INTER_V1_PF = 3, /**< Inter MB, first vector, from previous frame */
55  VP56_MB_INTER_V2_PF = 4, /**< Inter MB, second vector, from previous frame */
56  VP56_MB_INTER_NOVEC_GF = 5, /**< Inter MB, no vector, from golden frame */
57  VP56_MB_INTER_DELTA_GF = 6, /**< Inter MB, above/left vector + delta, from golden frame */
58  VP56_MB_INTER_4V = 7, /**< Inter MB, 4 vectors, from previous frame */
59  VP56_MB_INTER_V1_GF = 8, /**< Inter MB, first vector, from golden frame */
60  VP56_MB_INTER_V2_GF = 9, /**< Inter MB, second vector, from golden frame */
61 } VP56mb;
62 
63 typedef struct VP56Tree {
64  int8_t val;
65  int8_t prob_idx;
66 } VP56Tree;
67 
68 typedef struct VP56mv {
69  DECLARE_ALIGNED(4, int16_t, x);
70  int16_t y;
71 } VP56mv;
72 
73 #define VP56_SIZE_CHANGE 1
74 
75 typedef void (*VP56ParseVectorAdjustment)(VP56Context *s,
76  VP56mv *vect);
77 typedef void (*VP56Filter)(VP56Context *s, uint8_t *dst, uint8_t *src,
78  int offset1, int offset2, ptrdiff_t stride,
79  VP56mv mv, int mask, int select, int luma);
80 typedef int (*VP56ParseCoeff)(VP56Context *s);
81 typedef void (*VP56DefaultModelsInit)(VP56Context *s);
82 typedef void (*VP56ParseVectorModels)(VP56Context *s);
83 typedef int (*VP56ParseCoeffModels)(VP56Context *s);
84 typedef int (*VP56ParseHeader)(VP56Context *s, const uint8_t *buf,
85  int buf_size);
86 
87 typedef struct VP56RangeCoder {
88  int high;
89  int bits; /* stored negated (i.e. negative "bits" is a positive number of
90  bits left) in order to eliminate a negate in cache refilling */
91  const uint8_t *buffer;
92  const uint8_t *end;
93  unsigned int code_word;
96 
97 typedef struct VP56RefDc {
98  uint8_t not_null_dc;
100  int16_t dc_coeff;
101 } VP56RefDc;
102 
103 typedef struct VP56Macroblock {
104  uint8_t type;
107 
108 typedef struct VP56Model {
109  uint8_t coeff_reorder[64]; /* used in vp6 only */
110  uint8_t coeff_index_to_pos[64]; /* used in vp6 only */
111  uint8_t coeff_index_to_idct_selector[64]; /* used in vp6 only */
112  uint8_t vector_sig[2]; /* delta sign */
113  uint8_t vector_dct[2]; /* delta coding types */
114  uint8_t vector_pdi[2][2]; /* predefined delta init */
115  uint8_t vector_pdv[2][7]; /* predefined delta values */
116  uint8_t vector_fdv[2][8]; /* 8 bit delta value definition */
117  uint8_t coeff_dccv[2][11]; /* DC coeff value */
118  uint8_t coeff_ract[2][3][6][11]; /* Run/AC coding type and AC coeff value */
119  uint8_t coeff_acct[2][3][3][6][5];/* vp5 only AC coding type for coding group < 3 */
120  uint8_t coeff_dcct[2][36][5]; /* DC coeff coding type */
121  uint8_t coeff_runv[2][14]; /* run value (vp6 only) */
122  uint8_t mb_type[3][10][10]; /* model for decoding MB type */
123  uint8_t mb_types_stats[3][10][2];/* contextual, next MB type stats */
124 } VP56Model;
125 
126 struct vp56_context {
133  uint8_t idct_scantable[64];
136  uint8_t *edge_emu_buffer;
141 
142  /* frame info */
144  int plane_width[4];
145  int plane_height[4];
146  int mb_width; /* number of horizontal MB */
147  int mb_height; /* number of vertical MB */
148  int block_offset[6];
149 
151  uint16_t dequant_dc;
152  uint16_t dequant_ac;
153 
154  /* DC predictors management */
158  int16_t prev_dc[3][3]; /* [plan][ref_frame] */
159 
160  /* blocks / macroblock */
163  DECLARE_ALIGNED(16, int16_t, block_coeff)[6][64];
165 
166  /* motion vectors */
167  VP56mv mv[6]; /* vectors for each block in MB */
170 
171  /* filtering hints */
172  int filter_header; /* used in vp6 only */
179 
180  uint8_t coeff_ctx[4][64]; /* used in vp5 only */
181  uint8_t coeff_ctx_last[4]; /* used in vp5 only */
182 
184 
185  /* upside-down flipping hints */
186  int flip; /* are we flipping ? */
187  int frbi; /* first row block index in MB */
188  int srbi; /* second row block index in MB */
189  ptrdiff_t stride[4]; /* stride for each plan */
190 
191  const uint8_t *vp56_coord_div;
199 
200  /* for "slice" parallelism between YUV and A */
201  VP56Context *alpha_context;
202 
205 
206  /* huffman decoding */
211  VLC ract_vlc[2][3][6];
212  unsigned int nb_null[2][2]; /* number of consecutive NULL DC/AC */
213 
216 };
217 
218 
219 int ff_vp56_init(AVCodecContext *avctx, int flip, int has_alpha);
220 int ff_vp56_init_context(AVCodecContext *avctx, VP56Context *s,
221  int flip, int has_alpha);
222 int ff_vp56_free(AVCodecContext *avctx);
223 int ff_vp56_free_context(VP56Context *s);
224 void ff_vp56_init_dequant(VP56Context *s, int quantizer);
225 int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
226  AVPacket *avpkt);
227 
228 
229 /**
230  * vp56 specific range coder implementation
231  */
232 
233 extern const uint8_t ff_vp56_norm_shift[256];
234 int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size);
235 
236 /**
237  * vp5689 returns 1 if the end of the stream has been reached, 0 otherwise.
238  */
240 {
241  if (c->end <= c->buffer && c->bits >= 0)
242  c->end_reached ++;
243  return c->end_reached > 10;
244 }
245 
247 {
248  int shift = ff_vp56_norm_shift[c->high];
249  int bits = c->bits;
250  unsigned int code_word = c->code_word;
251 
252  c->high <<= shift;
253  code_word <<= shift;
254  bits += shift;
255  if(bits >= 0 && c->buffer < c->end) {
256  code_word |= bytestream_get_be16(&c->buffer) << bits;
257  bits -= 16;
258  }
259  c->bits = bits;
260  return code_word;
261 }
262 
263 #if ARCH_ARM
264 #include "arm/vp56_arith.h"
265 #elif ARCH_X86
266 #include "x86/vp56_arith.h"
267 #endif
268 
269 #ifndef vp56_rac_get_prob
270 #define vp56_rac_get_prob vp56_rac_get_prob
272 {
273  unsigned int code_word = vp56_rac_renorm(c);
274  unsigned int low = 1 + (((c->high - 1) * prob) >> 8);
275  unsigned int low_shift = low << 16;
276  int bit = code_word >= low_shift;
277 
278  c->high = bit ? c->high - low : low;
279  c->code_word = bit ? code_word - low_shift : code_word;
280 
281  return bit;
282 }
283 #endif
284 
285 #ifndef vp56_rac_get_prob_branchy
286 // branchy variant, to be used where there's a branch based on the bit decoded
288 {
289  unsigned long code_word = vp56_rac_renorm(c);
290  unsigned low = 1 + (((c->high - 1) * prob) >> 8);
291  unsigned low_shift = low << 16;
292 
293  if (code_word >= low_shift) {
294  c->high -= low;
295  c->code_word = code_word - low_shift;
296  return 1;
297  }
298 
299  c->high = low;
300  c->code_word = code_word;
301  return 0;
302 }
303 #endif
304 
306 {
307  unsigned int code_word = vp56_rac_renorm(c);
308  /* equiprobable */
309  int low = (c->high + 1) >> 1;
310  unsigned int low_shift = low << 16;
311  int bit = code_word >= low_shift;
312  if (bit) {
313  c->high -= low;
314  code_word -= low_shift;
315  } else {
316  c->high = low;
317  }
318 
319  c->code_word = code_word;
320  return bit;
321 }
322 
323 // rounding is different than vp56_rac_get, is vp56_rac_get wrong?
325 {
326  return vp56_rac_get_prob(c, 128);
327 }
328 
330 {
331  int value = 0;
332 
333  while (bits--) {
334  value = (value << 1) | vp56_rac_get(c);
335  }
336 
337  return value;
338 }
339 
341 {
342  int value = 0;
343 
344  while (bits--) {
345  value = (value << 1) | vp8_rac_get(c);
346  }
347 
348  return value;
349 }
350 
351 // fixme: add 1 bit to all the calls to this?
353 {
354  int v;
355 
356  if (!vp8_rac_get(c))
357  return 0;
358 
359  v = vp8_rac_get_uint(c, bits);
360 
361  if (vp8_rac_get(c))
362  v = -v;
363 
364  return v;
365 }
366 
367 // P(7)
369 {
370  int v = vp56_rac_gets(c, 7) << 1;
371  return v + !v;
372 }
373 
375 {
376  int v = vp8_rac_get_uint(c, 7) << 1;
377  return v + !v;
378 }
379 
380 static av_always_inline
382  const VP56Tree *tree,
383  const uint8_t *probs)
384 {
385  while (tree->val > 0) {
386  if (vp56_rac_get_prob_branchy(c, probs[tree->prob_idx]))
387  tree += tree->val;
388  else
389  tree++;
390  }
391  return -tree->val;
392 }
393 
394 // how probabilities are associated with decisions is different I think
395 // well, the new scheme fits in the old but this way has one fewer branches per decision
396 static av_always_inline int vp8_rac_get_tree(VP56RangeCoder *c, const int8_t (*tree)[2],
397  const uint8_t *probs)
398 {
399  int i = 0;
400 
401  do {
402  i = tree[i][vp56_rac_get_prob(c, probs[i])];
403  } while (i > 0);
404 
405  return -i;
406 }
407 
408 // DCTextra
410 {
411  int v = 0;
412 
413  do {
414  v = (v<<1) + vp56_rac_get_prob(c, *prob++);
415  } while (*prob);
416 
417  return v;
418 }
419 
420 #endif /* AVCODEC_VP56_H */
VP56_FRAME_GOLDEN2
@ VP56_FRAME_GOLDEN2
Definition: vp56.h:47
vp56_context::h264chroma
H264ChromaContext h264chroma
Definition: vp56.h:128
vp56_rac_get
static av_always_inline int vp56_rac_get(VP56RangeCoder *c)
Definition: vp56.h:305
stride
int stride
Definition: mace.c:144
vp56_context::block_coeff
int16_t block_coeff[6][64]
Definition: vp56.h:163
ff_vp56_init_context
int ff_vp56_init_context(AVCodecContext *avctx, VP56Context *s, int flip, int has_alpha)
Definition: vp56.c:782
vp56_context::dequant_ac
uint16_t dequant_ac
Definition: vp56.h:152
vp8_rac_get_coeff
static av_always_inline int vp8_rac_get_coeff(VP56RangeCoder *c, const uint8_t *prob)
Definition: vp56.h:409
vp56_context
Definition: vp56.h:126
vp56_context::hdsp
HpelDSPContext hdsp
Definition: vp56.h:129
VP56mv::x
int16_t x
Definition: vp56.h:69
VP3DSPContext
Definition: vp3dsp.h:25
VP56_MB_INTER_DELTA_GF
@ VP56_MB_INTER_DELTA_GF
Inter MB, above/left vector + delta, from golden frame.
Definition: vp56.h:57
vp56_context::modelp
VP56Model * modelp
Definition: vp56.h:203
mem_internal.h
vp56_context::max_vector_length
int max_vector_length
Definition: vp56.h:176
vpX_rac_is_end
static av_always_inline int vpX_rac_is_end(VP56RangeCoder *c)
vp5689 returns 1 if the end of the stream has been reached, 0 otherwise.
Definition: vp56.h:239
VP56ParseHeader
int(* VP56ParseHeader)(VP56Context *s, const uint8_t *buf, int buf_size)
Definition: vp56.h:84
ff_vp56_decode_frame
int ff_vp56_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: vp56.c:568
VP56RangeCoder::buffer
const uint8_t * buffer
Definition: vp56.h:91
VP56Model::mb_types_stats
uint8_t mb_types_stats[3][10][2]
Definition: vp56.h:123
VP56Model::coeff_acct
uint8_t coeff_acct[2][3][3][6][5]
Definition: vp56.h:119
VP56_MB_INTER_V2_GF
@ VP56_MB_INTER_V2_GF
Inter MB, second vector, from golden frame.
Definition: vp56.h:60
vp56_context::vector_candidate_pos
int vector_candidate_pos
Definition: vp56.h:169
vp56_context::stride
ptrdiff_t stride[4]
Definition: vp56.h:189
mv
static const int8_t mv[256][2]
Definition: 4xm.c:79
vp56_context::golden_frame
int golden_frame
Definition: vp56.h:143
VP56Filter
void(* VP56Filter)(VP56Context *s, uint8_t *dst, uint8_t *src, int offset1, int offset2, ptrdiff_t stride, VP56mv mv, int mask, int select, int luma)
Definition: vp56.h:77
av_unused
#define av_unused
Definition: attributes.h:131
vp3dsp.h
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:310
vp56_context::vector_candidate
VP56mv vector_candidate[2]
Definition: vp56.h:168
VP56RefDc::not_null_dc
uint8_t not_null_dc
Definition: vp56.h:98
VP56RefDc::ref_frame
VP56Frame ref_frame
Definition: vp56.h:99
vp56_context::dequant_dc
uint16_t dequant_dc
Definition: vp56.h:151
data
const char data[16]
Definition: mxf.c:143
vp56_context::gb
GetBitContext gb
Definition: vp56.h:208
vp56_context::edge_emu_buffer_alloc
uint8_t * edge_emu_buffer_alloc
Definition: vp56.h:135
vp56_context::edge_emu_buffer
uint8_t * edge_emu_buffer
Definition: vp56.h:136
VP56Model::coeff_index_to_pos
uint8_t coeff_index_to_pos[64]
Definition: vp56.h:110
vp56_context::parse_coeff
VP56ParseCoeff parse_coeff
Definition: vp56.h:194
VP56Model::coeff_ract
uint8_t coeff_ract[2][3][6][11]
Definition: vp56.h:118
vp56_rac_gets_nn
static av_unused int vp56_rac_gets_nn(VP56RangeCoder *c, int bits)
Definition: vp56.h:368
vp8_rac_get_nn
static av_unused int vp8_rac_get_nn(VP56RangeCoder *c)
Definition: vp56.h:374
vp56_context::vp3dsp
VP3DSPContext vp3dsp
Definition: vp56.h:131
vp56_context::prev_dc
int16_t prev_dc[3][3]
Definition: vp56.h:158
VP56_MB_INTRA
@ VP56_MB_INTRA
Intra MB.
Definition: vp56.h:52
bit
#define bit(string, value)
Definition: cbs_mpeg2.c:58
VP56ParseCoeffModels
int(* VP56ParseCoeffModels)(VP56Context *s)
Definition: vp56.h:83
vp56_rac_get_prob_branchy
static av_always_inline int vp56_rac_get_prob_branchy(VP56RangeCoder *c, int prob)
Definition: vp56.h:287
VP56RefDc
Definition: vp56.h:97
VP56ParseVectorAdjustment
void(* VP56ParseVectorAdjustment)(VP56Context *s, VP56mv *vect)
Definition: vp56.h:75
vp8_rac_get
static av_always_inline int vp8_rac_get(VP56RangeCoder *c)
Definition: vp56.h:324
vp56_context::vp56dsp
VP56DSPContext vp56dsp
Definition: vp56.h:132
GetBitContext
Definition: get_bits.h:62
VP56_MB_INTER_NOVEC_PF
@ VP56_MB_INTER_NOVEC_PF
Inter MB, no vector, from previous frame.
Definition: vp56.h:51
vp56_context::frames
AVFrame * frames[4]
Definition: vp56.h:134
vp8_rac_get_sint
static av_unused int vp8_rac_get_sint(VP56RangeCoder *c, int bits)
Definition: vp56.h:352
vp56_context::use_huffman
int use_huffman
Definition: vp56.h:207
VP56Macroblock::type
uint8_t type
Definition: vp56.h:104
VP56_MB_INTER_V1_PF
@ VP56_MB_INTER_V1_PF
Inter MB, first vector, from previous frame.
Definition: vp56.h:54
VP56RefDc::dc_coeff
int16_t dc_coeff
Definition: vp56.h:100
VP56ParseCoeff
int(* VP56ParseCoeff)(VP56Context *s)
Definition: vp56.h:80
vp56_context::dccv_vlc
VLC dccv_vlc[2]
Definition: vp56.h:209
VP56Model::mb_type
uint8_t mb_type[3][10][10]
Definition: vp56.h:122
VP56RangeCoder::high
int high
Definition: vp56.h:88
mask
static const uint16_t mask[17]
Definition: lzw.c:38
vp56_context::frbi
int frbi
Definition: vp56.h:187
s
#define s(width, name)
Definition: cbs_vp9.c:257
vp56_context::ccp
VP56RangeCoder * ccp
Definition: vp56.h:139
VP56_MB_INTER_4V
@ VP56_MB_INTER_4V
Inter MB, 4 vectors, from previous frame.
Definition: vp56.h:58
vp56_context::mb_width
int mb_width
Definition: vp56.h:146
bits
uint8_t bits
Definition: vp3data.h:141
vp56_context::nb_null
unsigned int nb_null[2][2]
Definition: vp56.h:212
vp56_rac_gets
static int vp56_rac_gets(VP56RangeCoder *c, int bits)
Definition: vp56.h:329
get_bits.h
VP56mv::y
int16_t y
Definition: vp56.h:70
VP56mv
Definition: vp56.h:68
VP56Model::coeff_dccv
uint8_t coeff_dccv[2][11]
Definition: vp56.h:117
VP56Model::coeff_dcct
uint8_t coeff_dcct[2][36][5]
Definition: vp56.h:120
VP56Model::vector_sig
uint8_t vector_sig[2]
Definition: vp56.h:112
VP56Model::coeff_runv
uint8_t coeff_runv[2][14]
Definition: vp56.h:121
ff_vp56_init
int ff_vp56_init(AVCodecContext *avctx, int flip, int has_alpha)
Definition: vp56.c:776
VP56DefaultModelsInit
void(* VP56DefaultModelsInit)(VP56Context *s)
Definition: vp56.h:81
vp8_rac_get_uint
static int vp8_rac_get_uint(VP56RangeCoder *c, int bits)
Definition: vp56.h:340
VP56_MB_INTER_DELTA_PF
@ VP56_MB_INTER_DELTA_PF
Inter MB, above/left vector + delta, from previous frame.
Definition: vp56.h:53
vp56_context::quantizer
int quantizer
Definition: vp56.h:150
vp56_context::plane_height
int plane_height[4]
Definition: vp56.h:145
vp8_rac_get_tree
static av_always_inline int vp8_rac_get_tree(VP56RangeCoder *c, const int8_t(*tree)[2], const uint8_t *probs)
Definition: vp56.h:396
VP56_MB_INTER_NOVEC_GF
@ VP56_MB_INTER_NOVEC_GF
Inter MB, no vector, from golden frame.
Definition: vp56.h:56
src
#define src
Definition: vp8dsp.c:255
VP56_MB_INTER_V2_PF
@ VP56_MB_INTER_V2_PF
Inter MB, second vector, from previous frame.
Definition: vp56.h:55
vp56_context::block_offset
int block_offset[6]
Definition: vp56.h:148
vp56_context::alpha_context
VP56Context * alpha_context
Definition: vp56.h:201
VP56Tree::prob_idx
int8_t prob_idx
Definition: vp56.h:65
vp56_context::c
VP56RangeCoder c
Definition: vp56.h:137
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
vp56_arith.h
vp56_context::default_models_init
VP56DefaultModelsInit default_models_init
Definition: vp56.h:195
VP56Macroblock
Definition: vp56.h:103
HpelDSPContext
Half-pel DSP context.
Definition: hpeldsp.h:45
VP56Tree
Definition: vp56.h:63
VP56DSPContext
Definition: vp56dsp.h:27
flip
static void flip(AVCodecContext *avctx, AVFrame *frame)
Definition: rawdec.c:131
vp56_context::filter_selection
int filter_selection
Definition: vp56.h:174
vp56_context::vdsp
VideoDSPContext vdsp
Definition: vp56.h:130
vp56_arith.h
h264chroma.h
vp56_context::above_blocks
VP56RefDc * above_blocks
Definition: vp56.h:155
vp56_context::filter_header
int filter_header
Definition: vp56.h:172
VP56Tree::val
int8_t val
Definition: vp56.h:64
VP56Macroblock::mv
VP56mv mv
Definition: vp56.h:105
vp56_context::sample_variance_threshold
int sample_variance_threshold
Definition: vp56.h:177
VP56_FRAME_NONE
@ VP56_FRAME_NONE
Definition: vp56.h:43
vp56_rac_get_tree
static av_always_inline int vp56_rac_get_tree(VP56RangeCoder *c, const VP56Tree *tree, const uint8_t *probs)
Definition: vp56.h:381
vp56_context::cc
VP56RangeCoder cc
Definition: vp56.h:138
VP56ParseVectorModels
void(* VP56ParseVectorModels)(VP56Context *s)
Definition: vp56.h:82
vp56_context::model
VP56Model model
Definition: vp56.h:204
ff_vp56_init_range_decoder
int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size)
Definition: vp56rac.c:40
vp56_context::discard_frame
int discard_frame
Definition: vp56.h:215
VP56Model::coeff_index_to_idct_selector
uint8_t coeff_index_to_idct_selector[64]
Definition: vp56.h:111
VP56RangeCoder::bits
int bits
Definition: vp56.h:89
vp56_context::filter_mode
int filter_mode
Definition: vp56.h:175
VP56_MB_INTER_V1_GF
@ VP56_MB_INTER_V1_GF
Inter MB, first vector, from golden frame.
Definition: vp56.h:59
VP56RangeCoder::code_word
unsigned int code_word
Definition: vp56.h:93
VP56Model::vector_pdi
uint8_t vector_pdi[2][2]
Definition: vp56.h:114
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
vp56_context::runv_vlc
VLC runv_vlc[2]
Definition: vp56.h:210
VP56RangeCoder::end_reached
int end_reached
Definition: vp56.h:94
vp56_context::avctx
AVCodecContext * avctx
Definition: vp56.h:127
vp56_context::ract_vlc
VLC ract_vlc[2][3][6]
Definition: vp56.h:211
vp56dsp.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
ff_vp56_init_dequant
void ff_vp56_init_dequant(VP56Context *s, int quantizer)
Definition: vp56.c:34
vp56_context::have_undamaged_frame
int have_undamaged_frame
Definition: vp56.h:214
VP56_FRAME_GOLDEN
@ VP56_FRAME_GOLDEN
Definition: vp56.h:46
vp56_context::parse_header
VP56ParseHeader parse_header
Definition: vp56.h:198
vp56_context::coeff_ctx
uint8_t coeff_ctx[4][64]
Definition: vp56.h:180
vp56_context::mv
VP56mv mv[6]
Definition: vp56.h:167
av_always_inline
#define av_always_inline
Definition: attributes.h:49
value
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default value
Definition: writing_filters.txt:86
VP56mb
VP56mb
Definition: vp56.h:50
vp56_context::has_alpha
int has_alpha
Definition: vp56.h:183
vp56_context::macroblocks
VP56Macroblock * macroblocks
Definition: vp56.h:162
avcodec.h
VP56Frame
VP56Frame
Definition: vp56.h:42
vp56_context::above_block_idx
int above_block_idx[6]
Definition: vp56.h:157
vp56_context::flip
int flip
Definition: vp56.h:186
vp56_context::plane_width
int plane_width[4]
Definition: vp56.h:144
prob
#define prob(name, subs,...)
Definition: cbs_vp9.c:373
vp56_context::idct_scantable
uint8_t idct_scantable[64]
Definition: vp56.h:133
VP56Model::vector_fdv
uint8_t vector_fdv[2][8]
Definition: vp56.h:116
VP56_FRAME_CURRENT
@ VP56_FRAME_CURRENT
Definition: vp56.h:44
VP56RangeCoder
Definition: vp56.h:87
AVCodecContext
main external API structure.
Definition: avcodec.h:383
vp56_context::idct_selector
int idct_selector[6]
Definition: vp56.h:164
VP56Model
Definition: vp56.h:108
VP56_FRAME_PREVIOUS
@ VP56_FRAME_PREVIOUS
Definition: vp56.h:45
VLC
Definition: vlc.h:26
vp56_context::deblock_filtering
int deblock_filtering
Definition: vp56.h:173
vp56_context::sub_version
int sub_version
Definition: vp56.h:140
VideoDSPContext
Definition: videodsp.h:41
shift
static int shift(int a, int b)
Definition: sonic.c:83
vp56_rac_get_prob
#define vp56_rac_get_prob
Definition: vp56.h:270
vp56_context::bounding_values_array
int bounding_values_array[256]
Definition: vp56.h:178
H264ChromaContext
Definition: h264chroma.h:27
ff_vp56_free_context
int ff_vp56_free_context(VP56Context *s)
Definition: vp56.c:841
AVPacket
This structure stores compressed data.
Definition: packet.h:350
videodsp.h
ff_vp56_norm_shift
const uint8_t ff_vp56_norm_shift[256]
vp56 specific range coder implementation
Definition: vp56rac.c:25
VP56Model::vector_dct
uint8_t vector_dct[2]
Definition: vp56.h:113
ff_vp56_free
int ff_vp56_free(AVCodecContext *avctx)
Definition: vp56.c:835
bytestream.h
vp56_context::parse_coeff_models
VP56ParseCoeffModels parse_coeff_models
Definition: vp56.h:197
hpeldsp.h
vp56_context::parse_vector_models
VP56ParseVectorModels parse_vector_models
Definition: vp56.h:196
VP56RangeCoder::end
const uint8_t * end
Definition: vp56.h:92
vp56_context::coeff_ctx_last
uint8_t coeff_ctx_last[4]
Definition: vp56.h:181
vp56_context::srbi
int srbi
Definition: vp56.h:188
vp56_context::vp56_coord_div
const uint8_t * vp56_coord_div
Definition: vp56.h:191
vp56_rac_renorm
static av_always_inline unsigned int vp56_rac_renorm(VP56RangeCoder *c)
Definition: vp56.h:246
int
int
Definition: ffmpeg_filter.c:153
vp56_context::left_block
VP56RefDc left_block[4]
Definition: vp56.h:156
vp56_context::filter
VP56Filter filter
Definition: vp56.h:193
vp56_context::mb_height
int mb_height
Definition: vp56.h:147
VP56Model::vector_pdv
uint8_t vector_pdv[2][7]
Definition: vp56.h:115
vp56_context::mb_type
VP56mb mb_type
Definition: vp56.h:161
VP56Model::coeff_reorder
uint8_t coeff_reorder[64]
Definition: vp56.h:109
vp56_context::parse_vector_adjustment
VP56ParseVectorAdjustment parse_vector_adjustment
Definition: vp56.h:192