FFmpeg
ffv1dec.c
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1 /*
2  * FFV1 decoder
3  *
4  * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * FF Video Codec 1 (a lossless codec) decoder
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/pixdesc.h"
33 #include "avcodec.h"
34 #include "codec_internal.h"
35 #include "get_bits.h"
36 #include "rangecoder.h"
37 #include "golomb.h"
38 #include "mathops.h"
39 #include "ffv1.h"
40 #include "thread.h"
41 #include "threadframe.h"
42 
43 static inline av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state,
44  int is_signed)
45 {
46  if (get_rac(c, state + 0))
47  return 0;
48  else {
49  int i, e;
50  unsigned a;
51  e = 0;
52  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
53  e++;
54  if (e > 31)
55  return AVERROR_INVALIDDATA;
56  }
57 
58  a = 1;
59  for (i = e - 1; i >= 0; i--)
60  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
61 
62  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
63  return (a ^ e) - e;
64  }
65 }
66 
67 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
68 {
69  return get_symbol_inline(c, state, is_signed);
70 }
71 
72 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
73  int bits)
74 {
75  int k, i, v, ret;
76 
77  i = state->count;
78  k = 0;
79  while (i < state->error_sum) { // FIXME: optimize
80  k++;
81  i += i;
82  }
83 
84  v = get_sr_golomb(gb, k, 12, bits);
85  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
86  v, state->bias, state->error_sum, state->drift, state->count, k);
87 
88  v ^= ((2 * state->drift + state->count) >> 31);
89 
90  ret = fold(v + state->bias, bits);
91 
93 
94  return ret;
95 }
96 
98 {
99  if (s->ac != AC_GOLOMB_RICE) {
100  RangeCoder *const c = &s->c;
101  if (c->overread > MAX_OVERREAD)
102  return AVERROR_INVALIDDATA;
103  } else {
104  if (get_bits_left(&s->gb) < 1)
105  return AVERROR_INVALIDDATA;
106  }
107  return 0;
108 }
109 
110 #define TYPE int16_t
111 #define RENAME(name) name
112 #include "ffv1dec_template.c"
113 #undef TYPE
114 #undef RENAME
115 
116 #define TYPE int32_t
117 #define RENAME(name) name ## 32
118 #include "ffv1dec_template.c"
119 
120 static int decode_plane(FFV1Context *s, uint8_t *src,
121  int w, int h, int stride, int plane_index,
122  int pixel_stride)
123 {
124  int x, y;
125  int16_t *sample[2];
126  sample[0] = s->sample_buffer + 3;
127  sample[1] = s->sample_buffer + w + 6 + 3;
128 
129  s->run_index = 0;
130 
131  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
132 
133  for (y = 0; y < h; y++) {
134  int16_t *temp = sample[0]; // FIXME: try a normal buffer
135 
136  sample[0] = sample[1];
137  sample[1] = temp;
138 
139  sample[1][-1] = sample[0][0];
140  sample[0][w] = sample[0][w - 1];
141 
142  if (s->avctx->bits_per_raw_sample <= 8) {
143  int ret = decode_line(s, w, sample, plane_index, 8);
144  if (ret < 0)
145  return ret;
146  for (x = 0; x < w; x++)
147  src[x*pixel_stride + stride * y] = sample[1][x];
148  } else {
149  int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
150  if (ret < 0)
151  return ret;
152  if (s->packed_at_lsb) {
153  for (x = 0; x < w; x++) {
154  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
155  }
156  } else {
157  for (x = 0; x < w; x++) {
158  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16);
159  }
160  }
161  }
162  }
163  return 0;
164 }
165 
167 {
168  RangeCoder *c = &fs->c;
169  uint8_t state[CONTEXT_SIZE];
170  unsigned ps, i, context_count;
171  int sx, sy, sw, sh;
172 
173  memset(state, 128, sizeof(state));
174  sx = get_symbol(c, state, 0);
175  sy = get_symbol(c, state, 0);
176  sw = get_symbol(c, state, 0) + 1U;
177  sh = get_symbol(c, state, 0) + 1U;
178 
179  av_assert0(f->version > 2);
180 
181 
182  if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0)
183  return AVERROR_INVALIDDATA;
184  if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh)
185  return AVERROR_INVALIDDATA;
186 
187  fs->slice_x = sx * (int64_t)f->width / f->num_h_slices;
188  fs->slice_y = sy * (int64_t)f->height / f->num_v_slices;
189  fs->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - fs->slice_x;
190  fs->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - fs->slice_y;
191 
192  av_assert0((unsigned)fs->slice_width <= f->width &&
193  (unsigned)fs->slice_height <= f->height);
194  av_assert0 ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width <= f->width
195  && (unsigned)fs->slice_y + (uint64_t)fs->slice_height <= f->height);
196 
197  if (fs->ac == AC_GOLOMB_RICE && fs->slice_width >= (1<<23))
198  return AVERROR_INVALIDDATA;
199 
200  for (i = 0; i < f->plane_count; i++) {
201  PlaneContext * const p = &fs->plane[i];
202  int idx = get_symbol(c, state, 0);
203  if (idx >= (unsigned)f->quant_table_count) {
204  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
205  return -1;
206  }
207  p->quant_table_index = idx;
208  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
209  context_count = f->context_count[idx];
210 
211  if (p->context_count < context_count) {
212  av_freep(&p->state);
213  av_freep(&p->vlc_state);
214  }
216  }
217 
218  ps = get_symbol(c, state, 0);
219  if (ps == 1) {
220  f->cur->interlaced_frame = 1;
221  f->cur->top_field_first = 1;
222  } else if (ps == 2) {
223  f->cur->interlaced_frame = 1;
224  f->cur->top_field_first = 0;
225  } else if (ps == 3) {
226  f->cur->interlaced_frame = 0;
227  }
228  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
229  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
230 
231  if (av_image_check_sar(f->width, f->height,
232  f->cur->sample_aspect_ratio) < 0) {
233  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
234  f->cur->sample_aspect_ratio.num,
235  f->cur->sample_aspect_ratio.den);
236  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
237  }
238 
239  if (fs->version > 3) {
240  fs->slice_reset_contexts = get_rac(c, state);
241  fs->slice_coding_mode = get_symbol(c, state, 0);
242  if (fs->slice_coding_mode != 1) {
243  fs->slice_rct_by_coef = get_symbol(c, state, 0);
244  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
245  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
246  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
247  return AVERROR_INVALIDDATA;
248  }
249  }
250  }
251 
252  return 0;
253 }
254 
255 static int decode_slice(AVCodecContext *c, void *arg)
256 {
257  FFV1Context *fs = *(void **)arg;
258  FFV1Context *f = fs->avctx->priv_data;
259  int width, height, x, y, ret;
260  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
261  AVFrame * const p = f->cur;
262  int i, si;
263 
264  for( si=0; fs != f->slice_context[si]; si ++)
265  ;
266 
267  if(f->fsrc && !p->key_frame)
268  ff_thread_await_progress(&f->last_picture, si, 0);
269 
270  if(f->fsrc && !p->key_frame) {
271  FFV1Context *fssrc = f->fsrc->slice_context[si];
272  FFV1Context *fsdst = f->slice_context[si];
273  av_assert1(fsdst->plane_count == fssrc->plane_count);
274  av_assert1(fsdst == fs);
275 
276  if (!p->key_frame)
277  fsdst->slice_damaged |= fssrc->slice_damaged;
278 
279  for (i = 0; i < f->plane_count; i++) {
280  PlaneContext *psrc = &fssrc->plane[i];
281  PlaneContext *pdst = &fsdst->plane[i];
282 
283  av_free(pdst->state);
284  av_free(pdst->vlc_state);
285  memcpy(pdst, psrc, sizeof(*pdst));
286  pdst->state = NULL;
287  pdst->vlc_state = NULL;
288 
289  if (fssrc->ac) {
291  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
292  } else {
293  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
294  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
295  }
296  }
297  }
298 
299  fs->slice_rct_by_coef = 1;
300  fs->slice_rct_ry_coef = 1;
301 
302  if (f->version > 2) {
303  if (ff_ffv1_init_slice_state(f, fs) < 0)
304  return AVERROR(ENOMEM);
305  if (decode_slice_header(f, fs) < 0) {
306  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
307  fs->slice_damaged = 1;
308  return AVERROR_INVALIDDATA;
309  }
310  }
311  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
312  return ret;
313  if (f->cur->key_frame || fs->slice_reset_contexts) {
315  } else if (fs->slice_damaged) {
316  return AVERROR_INVALIDDATA;
317  }
318 
319  width = fs->slice_width;
320  height = fs->slice_height;
321  x = fs->slice_x;
322  y = fs->slice_y;
323 
324  if (fs->ac == AC_GOLOMB_RICE) {
325  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
326  get_rac(&fs->c, (uint8_t[]) { 129 });
327  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
328  init_get_bits(&fs->gb,
329  fs->c.bytestream_start + fs->ac_byte_count,
330  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
331  }
332 
333  av_assert1(width && height);
334  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
335  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
336  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
337  const int cx = x >> f->chroma_h_shift;
338  const int cy = y >> f->chroma_v_shift;
339  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
340 
341  if (f->chroma_planes) {
342  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
343  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
344  }
345  if (fs->transparency)
346  decode_plane(fs, p->data[3] + ps*x + y*p->linesize[3], width, height, p->linesize[3], (f->version >= 4 && !f->chroma_planes) ? 1 : 2, 1);
347  } else if (f->colorspace == 0) {
348  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
349  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
350  } else if (f->use32bit) {
351  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
352  p->data[1] + ps * x + y * p->linesize[1],
353  p->data[2] + ps * x + y * p->linesize[2],
354  p->data[3] + ps * x + y * p->linesize[3] };
355  decode_rgb_frame32(fs, planes, width, height, p->linesize);
356  } else {
357  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
358  p->data[1] + ps * x + y * p->linesize[1],
359  p->data[2] + ps * x + y * p->linesize[2],
360  p->data[3] + ps * x + y * p->linesize[3] };
362  }
363  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
364  int v;
365  get_rac(&fs->c, (uint8_t[]) { 129 });
366  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
367  if (v) {
368  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
369  fs->slice_damaged = 1;
370  }
371  }
372 
373  ff_thread_report_progress(&f->picture, si, 0);
374 
375  return 0;
376 }
377 
378 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
379 {
380  int v;
381  int i = 0;
382  uint8_t state[CONTEXT_SIZE];
383 
384  memset(state, 128, sizeof(state));
385 
386  for (v = 0; i < 128; v++) {
387  unsigned len = get_symbol(c, state, 0) + 1U;
388 
389  if (len > 128 - i || !len)
390  return AVERROR_INVALIDDATA;
391 
392  while (len--) {
393  quant_table[i] = scale * v;
394  i++;
395  }
396  }
397 
398  for (i = 1; i < 128; i++)
399  quant_table[256 - i] = -quant_table[i];
400  quant_table[128] = -quant_table[127];
401 
402  return 2 * v - 1;
403 }
404 
406  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
407 {
408  int i;
409  int context_count = 1;
410 
411  for (i = 0; i < 5; i++) {
413  if (ret < 0)
414  return ret;
415  context_count *= ret;
416  if (context_count > 32768U) {
417  return AVERROR_INVALIDDATA;
418  }
419  }
420  return (context_count + 1) / 2;
421 }
422 
424 {
425  RangeCoder *const c = &f->c;
426  uint8_t state[CONTEXT_SIZE];
427  int i, j, k, ret;
428  uint8_t state2[32][CONTEXT_SIZE];
429  unsigned crc = 0;
430 
431  memset(state2, 128, sizeof(state2));
432  memset(state, 128, sizeof(state));
433 
434  ff_init_range_decoder(c, f->avctx->extradata, f->avctx->extradata_size);
435  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
436 
437  f->version = get_symbol(c, state, 0);
438  if (f->version < 2) {
439  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
440  return AVERROR_INVALIDDATA;
441  }
442  if (f->version > 2) {
443  c->bytestream_end -= 4;
444  f->micro_version = get_symbol(c, state, 0);
445  if (f->micro_version < 0)
446  return AVERROR_INVALIDDATA;
447  }
448  f->ac = get_symbol(c, state, 0);
449 
450  if (f->ac == AC_RANGE_CUSTOM_TAB) {
451  for (i = 1; i < 256; i++)
452  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
453  }
454 
455  f->colorspace = get_symbol(c, state, 0); //YUV cs type
456  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
457  f->chroma_planes = get_rac(c, state);
458  f->chroma_h_shift = get_symbol(c, state, 0);
459  f->chroma_v_shift = get_symbol(c, state, 0);
460  f->transparency = get_rac(c, state);
461  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
462  f->num_h_slices = 1 + get_symbol(c, state, 0);
463  f->num_v_slices = 1 + get_symbol(c, state, 0);
464 
465  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
466  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
467  f->chroma_h_shift, f->chroma_v_shift);
468  return AVERROR_INVALIDDATA;
469  }
470 
471  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
472  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
473  ) {
474  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
475  return AVERROR_INVALIDDATA;
476  }
477 
478  f->quant_table_count = get_symbol(c, state, 0);
479  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
480  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
481  f->quant_table_count = 0;
482  return AVERROR_INVALIDDATA;
483  }
484 
485  for (i = 0; i < f->quant_table_count; i++) {
486  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
487  if (f->context_count[i] < 0) {
488  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
489  return AVERROR_INVALIDDATA;
490  }
491  }
493  return ret;
494 
495  for (i = 0; i < f->quant_table_count; i++)
496  if (get_rac(c, state)) {
497  for (j = 0; j < f->context_count[i]; j++)
498  for (k = 0; k < CONTEXT_SIZE; k++) {
499  int pred = j ? f->initial_states[i][j - 1][k] : 128;
500  f->initial_states[i][j][k] =
501  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
502  }
503  }
504 
505  if (f->version > 2) {
506  f->ec = get_symbol(c, state, 0);
507  if (f->micro_version > 2)
508  f->intra = get_symbol(c, state, 0);
509  }
510 
511  if (f->version > 2) {
512  unsigned v;
514  f->avctx->extradata, f->avctx->extradata_size);
515  if (v || f->avctx->extradata_size < 4) {
516  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
517  return AVERROR_INVALIDDATA;
518  }
519  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
520  }
521 
522  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
523  av_log(f->avctx, AV_LOG_DEBUG,
524  "global: ver:%d.%d, coder:%d, colorspace: %d bpr:%d chroma:%d(%d:%d), alpha:%d slices:%dx%d qtabs:%d ec:%d intra:%d CRC:0x%08X\n",
525  f->version, f->micro_version,
526  f->ac,
527  f->colorspace,
528  f->avctx->bits_per_raw_sample,
529  f->chroma_planes, f->chroma_h_shift, f->chroma_v_shift,
530  f->transparency,
531  f->num_h_slices, f->num_v_slices,
532  f->quant_table_count,
533  f->ec,
534  f->intra,
535  crc
536  );
537  return 0;
538 }
539 
541 {
542  uint8_t state[CONTEXT_SIZE];
543  int i, j, context_count = -1; //-1 to avoid warning
544  RangeCoder *const c = &f->slice_context[0]->c;
545 
546  memset(state, 128, sizeof(state));
547 
548  if (f->version < 2) {
550  unsigned v= get_symbol(c, state, 0);
551  if (v >= 2) {
552  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
553  return AVERROR_INVALIDDATA;
554  }
555  f->version = v;
556  f->ac = get_symbol(c, state, 0);
557 
558  if (f->ac == AC_RANGE_CUSTOM_TAB) {
559  for (i = 1; i < 256; i++) {
560  int st = get_symbol(c, state, 1) + c->one_state[i];
561  if (st < 1 || st > 255) {
562  av_log(f->avctx, AV_LOG_ERROR, "invalid state transition %d\n", st);
563  return AVERROR_INVALIDDATA;
564  }
565  f->state_transition[i] = st;
566  }
567  }
568 
569  colorspace = get_symbol(c, state, 0); //YUV cs type
570  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
575  if (colorspace == 0 && f->avctx->skip_alpha)
576  transparency = 0;
577 
578  if (f->plane_count) {
579  if (colorspace != f->colorspace ||
580  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
581  chroma_planes != f->chroma_planes ||
582  chroma_h_shift != f->chroma_h_shift ||
583  chroma_v_shift != f->chroma_v_shift ||
584  transparency != f->transparency) {
585  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
586  return AVERROR_INVALIDDATA;
587  }
588  }
589 
590  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
591  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
593  return AVERROR_INVALIDDATA;
594  }
595 
596  f->colorspace = colorspace;
597  f->avctx->bits_per_raw_sample = bits_per_raw_sample;
598  f->chroma_planes = chroma_planes;
599  f->chroma_h_shift = chroma_h_shift;
600  f->chroma_v_shift = chroma_v_shift;
601  f->transparency = transparency;
602 
603  f->plane_count = 2 + f->transparency;
604  }
605 
606  if (f->colorspace == 0) {
607  if (!f->transparency && !f->chroma_planes) {
608  if (f->avctx->bits_per_raw_sample <= 8)
609  f->avctx->pix_fmt = AV_PIX_FMT_GRAY8;
610  else if (f->avctx->bits_per_raw_sample == 9) {
611  f->packed_at_lsb = 1;
612  f->avctx->pix_fmt = AV_PIX_FMT_GRAY9;
613  } else if (f->avctx->bits_per_raw_sample == 10) {
614  f->packed_at_lsb = 1;
615  f->avctx->pix_fmt = AV_PIX_FMT_GRAY10;
616  } else if (f->avctx->bits_per_raw_sample == 12) {
617  f->packed_at_lsb = 1;
618  f->avctx->pix_fmt = AV_PIX_FMT_GRAY12;
619  } else if (f->avctx->bits_per_raw_sample == 16) {
620  f->packed_at_lsb = 1;
621  f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
622  } else if (f->avctx->bits_per_raw_sample < 16) {
623  f->avctx->pix_fmt = AV_PIX_FMT_GRAY16;
624  } else
625  return AVERROR(ENOSYS);
626  } else if (f->transparency && !f->chroma_planes) {
627  if (f->avctx->bits_per_raw_sample <= 8)
628  f->avctx->pix_fmt = AV_PIX_FMT_YA8;
629  else
630  return AVERROR(ENOSYS);
631  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
632  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
633  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
634  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
635  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
636  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
637  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
638  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
639  }
640  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
641  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
642  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
643  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
644  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
645  }
646  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
647  f->packed_at_lsb = 1;
648  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
649  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
650  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
651  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
652  }
653  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
654  f->packed_at_lsb = 1;
655  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
656  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
657  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
658  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
659  }
660  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
661  f->packed_at_lsb = 1;
662  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
663  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
664  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P10; break;
665  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
666  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
667  }
668  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
669  f->packed_at_lsb = 1;
670  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
671  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
672  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
673  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
674  }
675  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
676  f->packed_at_lsb = 1;
677  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
678  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
679  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P12; break;
680  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
681  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
682  }
683  } else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency) {
684  f->packed_at_lsb = 1;
685  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
686  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P14; break;
687  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P14; break;
688  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P14; break;
689  }
690  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
691  f->packed_at_lsb = 1;
692  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
693  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
694  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
695  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
696  }
697  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
698  f->packed_at_lsb = 1;
699  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
700  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
701  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
702  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
703  }
704  }
705  } else if (f->colorspace == 1) {
706  if (f->chroma_h_shift || f->chroma_v_shift) {
707  av_log(f->avctx, AV_LOG_ERROR,
708  "chroma subsampling not supported in this colorspace\n");
709  return AVERROR(ENOSYS);
710  }
711  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
712  f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
713  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
714  f->avctx->pix_fmt = AV_PIX_FMT_RGB32;
715  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
716  f->avctx->pix_fmt = AV_PIX_FMT_GBRP9;
717  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
718  f->avctx->pix_fmt = AV_PIX_FMT_GBRP10;
719  else if (f->avctx->bits_per_raw_sample == 10 && f->transparency)
720  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
721  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
722  f->avctx->pix_fmt = AV_PIX_FMT_GBRP12;
723  else if (f->avctx->bits_per_raw_sample == 12 && f->transparency)
724  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
725  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
726  f->avctx->pix_fmt = AV_PIX_FMT_GBRP14;
727  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
728  f->avctx->pix_fmt = AV_PIX_FMT_GBRP16;
729  f->use32bit = 1;
730  }
731  else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) {
732  f->avctx->pix_fmt = AV_PIX_FMT_GBRAP16;
733  f->use32bit = 1;
734  }
735  } else {
736  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
737  return AVERROR(ENOSYS);
738  }
739  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
740  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
741  return AVERROR(ENOSYS);
742  }
743 
744  ff_dlog(f->avctx, "%d %d %d\n",
745  f->chroma_h_shift, f->chroma_v_shift, f->avctx->pix_fmt);
746  if (f->version < 2) {
747  context_count = read_quant_tables(c, f->quant_table);
748  if (context_count < 0) {
749  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
750  return AVERROR_INVALIDDATA;
751  }
752  f->slice_count = f->max_slice_count;
753  } else if (f->version < 3) {
754  f->slice_count = get_symbol(c, state, 0);
755  } else {
756  const uint8_t *p = c->bytestream_end;
757  for (f->slice_count = 0;
758  f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start;
759  f->slice_count++) {
760  int trailer = 3 + 5*!!f->ec;
761  int size = AV_RB24(p-trailer);
762  if (size + trailer > p - c->bytestream_start)
763  break;
764  p -= size + trailer;
765  }
766  }
767  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
768  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
769  return AVERROR_INVALIDDATA;
770  }
771 
772  for (j = 0; j < f->slice_count; j++) {
773  FFV1Context *fs = f->slice_context[j];
774  fs->ac = f->ac;
775  fs->packed_at_lsb = f->packed_at_lsb;
776 
777  fs->slice_damaged = 0;
778 
779  if (f->version == 2) {
780  int sx = get_symbol(c, state, 0);
781  int sy = get_symbol(c, state, 0);
782  int sw = get_symbol(c, state, 0) + 1U;
783  int sh = get_symbol(c, state, 0) + 1U;
784 
785  if (sx < 0 || sy < 0 || sw <= 0 || sh <= 0)
786  return AVERROR_INVALIDDATA;
787  if (sx > f->num_h_slices - sw || sy > f->num_v_slices - sh)
788  return AVERROR_INVALIDDATA;
789 
790  fs->slice_x = sx * (int64_t)f->width / f->num_h_slices;
791  fs->slice_y = sy * (int64_t)f->height / f->num_v_slices;
792  fs->slice_width = (sx + sw) * (int64_t)f->width / f->num_h_slices - fs->slice_x;
793  fs->slice_height = (sy + sh) * (int64_t)f->height / f->num_v_slices - fs->slice_y;
794 
795  av_assert0((unsigned)fs->slice_width <= f->width &&
796  (unsigned)fs->slice_height <= f->height);
797  av_assert0 ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width <= f->width
798  && (unsigned)fs->slice_y + (uint64_t)fs->slice_height <= f->height);
799  }
800 
801  for (i = 0; i < f->plane_count; i++) {
802  PlaneContext *const p = &fs->plane[i];
803 
804  if (f->version == 2) {
805  int idx = get_symbol(c, state, 0);
806  if (idx >= (unsigned)f->quant_table_count) {
807  av_log(f->avctx, AV_LOG_ERROR,
808  "quant_table_index out of range\n");
809  return AVERROR_INVALIDDATA;
810  }
811  p->quant_table_index = idx;
812  memcpy(p->quant_table, f->quant_tables[idx],
813  sizeof(p->quant_table));
814  context_count = f->context_count[idx];
815  } else {
816  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
817  }
818 
819  if (f->version <= 2) {
821  if (p->context_count < context_count) {
822  av_freep(&p->state);
823  av_freep(&p->vlc_state);
824  }
826  }
827  }
828  }
829  return 0;
830 }
831 
833 {
835  int ret;
836 
837  if ((ret = ff_ffv1_common_init(avctx)) < 0)
838  return ret;
839 
840  f->picture.f = av_frame_alloc();
841  f->last_picture.f = av_frame_alloc();
842  if (!f->picture.f || !f->last_picture.f)
843  return AVERROR(ENOMEM);
844 
845  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
846  return ret;
847 
848  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
849  return ret;
850 
851  return 0;
852 }
853 
855  int *got_frame, AVPacket *avpkt)
856 {
857  uint8_t *buf = avpkt->data;
858  int buf_size = avpkt->size;
860  RangeCoder *const c = &f->slice_context[0]->c;
861  int i, ret;
862  uint8_t keystate = 128;
863  uint8_t *buf_p;
864  AVFrame *p;
865 
866  if (f->last_picture.f)
867  ff_thread_release_ext_buffer(avctx, &f->last_picture);
868  FFSWAP(ThreadFrame, f->picture, f->last_picture);
869 
870  f->cur = p = f->picture.f;
871 
872  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
873  /* we have interlaced material flagged in container */
874  p->interlaced_frame = 1;
876  p->top_field_first = 1;
877  }
878 
879  f->avctx = avctx;
880  ff_init_range_decoder(c, buf, buf_size);
881  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
882 
883  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
884  if (get_rac(c, &keystate)) {
885  p->key_frame = 1;
886  f->key_frame_ok = 0;
887  if ((ret = read_header(f)) < 0)
888  return ret;
889  f->key_frame_ok = 1;
890  } else {
891  if (!f->key_frame_ok) {
893  "Cannot decode non-keyframe without valid keyframe\n");
894  return AVERROR_INVALIDDATA;
895  }
896  p->key_frame = 0;
897  }
898 
899  if (f->ac != AC_GOLOMB_RICE) {
900  if (buf_size < avctx->width * avctx->height / (128*8))
901  return AVERROR_INVALIDDATA;
902  } else {
903  int w = avctx->width;
904  int s = 1 + w / (1<<23);
905 
906  w /= s;
907 
908  for (i = 0; w > (1<<ff_log2_run[i]); i++)
909  w -= ff_log2_run[i];
910  if (buf_size < (avctx->height + i + 6) / 8 * s)
911  return AVERROR_INVALIDDATA;
912  }
913 
915  if (ret < 0)
916  return ret;
917 
919  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
920  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
921 
923 
924  buf_p = buf + buf_size;
925  for (i = f->slice_count - 1; i >= 0; i--) {
926  FFV1Context *fs = f->slice_context[i];
927  int trailer = 3 + 5*!!f->ec;
928  int v;
929 
930  if (i || f->version > 2) {
931  if (trailer > buf_p - buf) v = INT_MAX;
932  else v = AV_RB24(buf_p-trailer) + trailer;
933  } else v = buf_p - c->bytestream_start;
934  if (buf_p - c->bytestream_start < v) {
935  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
936  ff_thread_report_progress(&f->picture, INT_MAX, 0);
937  return AVERROR_INVALIDDATA;
938  }
939  buf_p -= v;
940 
941  if (f->ec) {
942  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
943  if (crc) {
944  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
945  av_log(f->avctx, AV_LOG_ERROR, "slice CRC mismatch %X!", crc);
946  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
947  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
948  } else if (ts != AV_NOPTS_VALUE) {
949  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
950  } else {
951  av_log(f->avctx, AV_LOG_ERROR, "\n");
952  }
953  fs->slice_damaged = 1;
954  }
955  if (avctx->debug & FF_DEBUG_PICT_INFO) {
956  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
957  }
958  }
959 
960  if (i) {
961  ff_init_range_decoder(&fs->c, buf_p, v);
962  } else
963  fs->c.bytestream_end = buf_p + v;
964 
965  fs->avctx = avctx;
966  }
967 
969  decode_slice,
970  &f->slice_context[0],
971  NULL,
972  f->slice_count,
973  sizeof(void*));
974 
975  for (i = f->slice_count - 1; i >= 0; i--) {
976  FFV1Context *fs = f->slice_context[i];
977  int j;
978  if (fs->slice_damaged && f->last_picture.f->data[0]) {
980  const uint8_t *src[4];
981  uint8_t *dst[4];
982  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
983  for (j = 0; j < desc->nb_components; j++) {
984  int pixshift = desc->comp[j].depth > 8;
985  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
986  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
987  dst[j] = p->data[j] + p->linesize[j] *
988  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
989  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
990  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
991 
992  }
993  if (desc->flags & AV_PIX_FMT_FLAG_PAL) {
994  dst[1] = p->data[1];
995  src[1] = f->last_picture.f->data[1];
996  }
997  av_image_copy(dst, p->linesize, src,
998  f->last_picture.f->linesize,
999  avctx->pix_fmt,
1000  fs->slice_width,
1001  fs->slice_height);
1002  }
1003  }
1004  ff_thread_report_progress(&f->picture, INT_MAX, 0);
1005 
1006  if (f->last_picture.f)
1007  ff_thread_release_ext_buffer(avctx, &f->last_picture);
1008  if ((ret = av_frame_ref(rframe, f->picture.f)) < 0)
1009  return ret;
1010 
1011  *got_frame = 1;
1012 
1013  return buf_size;
1014 }
1015 
1016 static void copy_fields(FFV1Context *fsdst, const FFV1Context *fssrc,
1017  const FFV1Context *fsrc)
1018 {
1019  fsdst->version = fsrc->version;
1020  fsdst->micro_version = fsrc->micro_version;
1021  fsdst->chroma_planes = fsrc->chroma_planes;
1024  fsdst->transparency = fsrc->transparency;
1025  fsdst->plane_count = fsrc->plane_count;
1026  fsdst->ac = fsrc->ac;
1027  fsdst->colorspace = fsrc->colorspace;
1028 
1029  fsdst->ec = fsrc->ec;
1030  fsdst->intra = fsrc->intra;
1031  fsdst->slice_damaged = fssrc->slice_damaged;
1032  fsdst->key_frame_ok = fsrc->key_frame_ok;
1033 
1034  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1035  fsdst->slice_count = fsrc->slice_count;
1036  if (fsrc->version<3){
1037  fsdst->slice_x = fssrc->slice_x;
1038  fsdst->slice_y = fssrc->slice_y;
1039  fsdst->slice_width = fssrc->slice_width;
1040  fsdst->slice_height = fssrc->slice_height;
1041  }
1042 }
1043 
1044 #if HAVE_THREADS
1045 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1046 {
1047  FFV1Context *fsrc = src->priv_data;
1048  FFV1Context *fdst = dst->priv_data;
1049  int i, ret;
1050 
1051  if (dst == src)
1052  return 0;
1053 
1054  {
1056  uint8_t (*initial_states[MAX_QUANT_TABLES])[32];
1058  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1059  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1060 
1061  memcpy(fdst, fsrc, sizeof(*fdst));
1062  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1063  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1064  fdst->picture = picture;
1065  fdst->last_picture = last_picture;
1066  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1067  FFV1Context *fssrc = fsrc->slice_context[i];
1068  FFV1Context *fsdst = fdst->slice_context[i];
1069  copy_fields(fsdst, fssrc, fsrc);
1070  }
1071  av_assert0(!fdst->plane[0].state);
1072  av_assert0(!fdst->sample_buffer);
1073  }
1074 
1076 
1077 
1079  if (fsrc->picture.f->data[0]) {
1080  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1081  return ret;
1082  }
1083 
1084  fdst->fsrc = fsrc;
1085 
1086  return 0;
1087 }
1088 #endif
1089 
1091 {
1092  FFV1Context *const s = avctx->priv_data;
1093 
1094  if (s->picture.f) {
1095  ff_thread_release_ext_buffer(avctx, &s->picture);
1096  av_frame_free(&s->picture.f);
1097  }
1098 
1099  if (s->last_picture.f) {
1100  ff_thread_release_ext_buffer(avctx, &s->last_picture);
1101  av_frame_free(&s->last_picture.f);
1102  }
1103  return ff_ffv1_close(avctx);
1104 }
1105 
1107  .p.name = "ffv1",
1108  CODEC_LONG_NAME("FFmpeg video codec #1"),
1109  .p.type = AVMEDIA_TYPE_VIDEO,
1110  .p.id = AV_CODEC_ID_FFV1,
1111  .priv_data_size = sizeof(FFV1Context),
1112  .init = decode_init,
1113  .close = ffv1_decode_close,
1116  .p.capabilities = AV_CODEC_CAP_DR1 |
1118  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
1120 };
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:502
read_extra_header
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:423
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:481
FFV1Context::chroma_v_shift
int chroma_v_shift
Definition: ffv1.h:85
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
FFV1Context::key_frame_ok
int key_frame_ok
Definition: ffv1.h:114
AV_FIELD_PROGRESSIVE
@ AV_FIELD_PROGRESSIVE
Definition: codec_par.h:40
update_vlc_state
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:157
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:42
get_bits_left
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:839
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
decode_slice
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:255
opt.h
AV_PIX_FMT_YA8
@ AV_PIX_FMT_YA8
8 bits gray, 8 bits alpha
Definition: pixfmt.h:133
ff_thread_release_ext_buffer
void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
Unref a ThreadFrame.
Definition: pthread_frame.c:1178
is_input_end
static int is_input_end(FFV1Context *s)
Definition: ffv1dec.c:97
FFV1Context::context_count
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:101
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2858
MAX_OVERREAD
#define MAX_OVERREAD
Definition: lagarithrac.h:50
FFV1Context::ec
int ec
Definition: ffv1.h:111
FFV1Context::gb
GetBitContext gb
Definition: ffv1.h:77
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:116
AV_PIX_FMT_YUVA422P9
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:494
get_sr_golomb
static int get_sr_golomb(GetBitContext *gb, int k, int limit, int esc_len)
read signed golomb rice code (ffv1).
Definition: golomb.h:529
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
ff_ffv1_common_init
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:36
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:501
w
uint8_t w
Definition: llviddspenc.c:38
FFV1Context::last_picture
ThreadFrame last_picture
Definition: ffv1.h:90
AVPacket::data
uint8_t * data
Definition: packet.h:374
AV_PIX_FMT_YUVA420P10
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:496
AVCodecContext::field_order
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:1004
FFV1Context::slice_x
int slice_x
Definition: ffv1.h:130
AVFrame::top_field_first
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:482
last_picture
enum AVPictureType last_picture
Definition: movenc.c:69
rangecoder.h
AVComponentDescriptor::step
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:40
AV_PIX_FMT_YUV420P10
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:459
PlaneContext::state
uint8_t(* state)[CONTEXT_SIZE]
Definition: ffv1.h:66
FFCodec
Definition: codec_internal.h:119
FFV1Context::num_h_slices
int num_h_slices
Definition: ffv1.h:127
AV_PIX_FMT_YUV440P
@ AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
FFV1Context::slice_context
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:123
read_quant_table
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:378
AC_RANGE_CUSTOM_TAB
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:52
AV_PIX_FMT_YUVA422P10
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:497
init_get_bits
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:649
thread.h
ff_thread_await_progress
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before ff_thread_await_progress() has been called on them. reget_buffer() and buffer age optimizations no longer work. *The contents of buffers must not be written to after ff_thread_report_progress() has been called on them. This includes draw_edges(). Porting codecs to frame threading
ThreadFrame::f
AVFrame * f
Definition: threadframe.h:28
FFV1Context::chroma_h_shift
int chroma_h_shift
Definition: ffv1.h:85
FF_DEBUG_PICT_INFO
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:1328
AV_PIX_FMT_GRAY9
#define AV_PIX_FMT_GRAY9
Definition: pixfmt.h:439
decode_line
static av_always_inline int RENAME() decode_line(FFV1Context *s, int w, TYPE *sample[2], int plane_index, int bits)
Definition: ffv1dec_template.c:25
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
crc.h
golomb.h
exp golomb vlc stuff
AV_PIX_FMT_YUVA420P9
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:493
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:123
AV_PIX_FMT_GBRP14
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:477
AV_PIX_FMT_GBRP10
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:475
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:503
ffv1_decode_close
static av_cold int ffv1_decode_close(AVCodecContext *avctx)
Definition: ffv1dec.c:1090
GetBitContext
Definition: get_bits.h:61
AV_PIX_FMT_YUV422P9
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:457
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:417
av_noinline
#define av_noinline
Definition: attributes.h:72
CONTEXT_SIZE
#define CONTEXT_SIZE
Definition: ffv1.h:45
scale
static av_always_inline float scale(float x, float s)
Definition: vf_v360.c:1389
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:443
get_symbol_inline
static av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:43
FFV1Context::chroma_planes
int chroma_planes
Definition: ffv1.h:84
PlaneContext::context_count
int context_count
Definition: ffv1.h:65
AVRational::num
int num
Numerator.
Definition: rational.h:59
ff_ffv1_clear_slice_state
void ff_ffv1_clear_slice_state(const FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:163
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:104
AV_PIX_FMT_YUV444P10
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:462
avassert.h
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_cold
#define av_cold
Definition: attributes.h:90
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:471
ff_thread_report_progress
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
Definition: pthread_frame.c:624
FFV1Context::bits_per_raw_sample
int bits_per_raw_sample
Definition: ffv1.h:117
AV_PIX_FMT_GBRAP10
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:479
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:500
width
#define width
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:298
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_PIX_FMT_GBRAP12
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:480
FFV1Context::slice_count
int slice_count
Definition: ffv1.h:124
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:472
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
AV_GET_BUFFER_FLAG_REF
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:376
decode_frame
static int decode_frame(AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:854
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
FFV1Context::plane
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:98
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:363
FFV1Context::max_slice_count
int max_slice_count
Definition: ffv1.h:125
FFV1Context::slice_damaged
int slice_damaged
Definition: ffv1.h:113
bits
uint8_t bits
Definition: vp3data.h:128
FFV1Context::intra
int intra
Definition: ffv1.h:112
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
FFV1Context::fsrc
struct FFV1Context * fsrc
Definition: ffv1.h:91
AV_PIX_FMT_YUV420P9
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:456
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
read_quant_tables
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:405
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:470
get_bits.h
fold
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:146
FFV1Context::ac
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:96
get_vlc_symbol
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:72
state
static struct @344 state
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
FFV1Context::plane_count
int plane_count
Definition: ffv1.h:95
planes
static const struct @345 planes[]
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:264
ff_thread_ref_frame
int ff_thread_ref_frame(ThreadFrame *dst, const ThreadFrame *src)
Definition: utils.c:885
arg
const char * arg
Definition: jacosubdec.c:67
AV_PIX_FMT_GRAY10
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:440
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:113
threadframe.h
FFV1Context::slice_height
int slice_height
Definition: ffv1.h:129
quant_table
static const int16_t quant_table[64]
Definition: intrax8.c:522
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:478
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:540
get_symbol
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:67
NULL
#define NULL
Definition: coverity.c:32
PlaneContext::vlc_state
VlcState * vlc_state
Definition: ffv1.h:67
AC_GOLOMB_RICE
#define AC_GOLOMB_RICE
Definition: ffv1.h:50
fs
#define fs(width, name, subs,...)
Definition: cbs_vp9.c:258
FFV1Context::num_v_slices
int num_v_slices
Definition: ffv1.h:126
FFV1Context::colorspace
int colorspace
Definition: ffv1.h:105
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
ff_ffv1_decoder
const FFCodec ff_ffv1_decoder
Definition: ffv1dec.c:1106
AV_PIX_FMT_YUV440P10
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:461
mathops.h
PlaneContext
Definition: ffv1.h:62
UPDATE_THREAD_CONTEXT
#define UPDATE_THREAD_CONTEXT(func)
Definition: codec_internal.h:273
AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:460
AV_PIX_FMT_GRAY8
@ AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:74
AV_PIX_FMT_GBRP9
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:474
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
VlcState
Definition: ffv1.h:55
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:28
FFV1Context::slice_width
int slice_width
Definition: ffv1.h:128
ff_init_range_decoder
av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size)
Definition: rangecoder.c:53
AV_CODEC_ID_FFV1
@ AV_CODEC_ID_FFV1
Definition: codec_id.h:85
f
f
Definition: af_crystalizer.c:122
AVFrame::pict_type
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:422
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:375
av_frame_ref
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:353
codec_internal.h
AV_PIX_FMT_YUV422P12
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:464
ff_ffv1_close
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:191
AVCodecContext::pkt_timebase
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:1749
sample
#define sample
Definition: flacdsp_template.c:44
FFV1Context::picture
ThreadFrame picture
Definition: ffv1.h:90
size
int size
Definition: twinvq_data.h:10344
ff_build_rac_states
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:68
FF_CODEC_CAP_ALLOCATE_PROGRESS
#define FF_CODEC_CAP_ALLOCATE_PROGRESS
Definition: codec_internal.h:69
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
AV_PIX_FMT_YUV444P12
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:466
FFV1Context::sample_buffer
int16_t * sample_buffer
Definition: ffv1.h:106
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:373
height
#define height
AV_PIX_FMT_RGB32
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:432
a
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:41
AV_PIX_FMT_YUVA444P
@ AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:167
av_crc_get_table
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:374
AV_FIELD_TT
@ AV_FIELD_TT
Top coded_first, top displayed first.
Definition: codec_par.h:41
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:117
AV_PIX_FMT_YUVA444P10
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:498
PlaneContext::quant_table_index
int quant_table_index
Definition: ffv1.h:64
FFV1Context::initial_states
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:103
AVFrame::interlaced_frame
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:477
decode_plane
static int decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:120
copy_fields
static void copy_fields(FFV1Context *fsdst, const FFV1Context *fssrc, const FFV1Context *fsrc)
Definition: ffv1dec.c:1016
ff_ffv1_init_slice_state
av_cold int ff_ffv1_init_slice_state(const FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:56
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:367
av_flatten
#define av_flatten
Definition: attributes.h:96
AV_PIX_FMT_GBRP12
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:476
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:31
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
FFV1Context::slice_y
int slice_y
Definition: ffv1.h:131
ffv1.h
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:211
update_thread_context
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call have update_thread_context() run it in the next thread. Add AV_CODEC_CAP_FRAME_THREADS to the codec capabilities. There will be very little speed gain at this point but it should work. If there are inter-frame dependencies
len
int len
Definition: vorbis_enc_data.h:426
get_rac
static int get_rac(RangeCoder *c, uint8_t *const state)
Definition: rangecoder.h:127
AV_CRC_32_IEEE
@ AV_CRC_32_IEEE
Definition: crc.h:52
AVCodecContext::height
int height
Definition: avcodec.h:571
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:608
ff_thread_get_ext_buffer
int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around ff_get_buffer() for frame-multithreaded codecs.
Definition: pthread_frame.c:1080
AV_PIX_FMT_YUV444P9
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:458
MAX_CONTEXT_INPUTS
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:48
FFV1Context::packed_at_lsb
int packed_at_lsb
Definition: ffv1.h:118
avcodec.h
stride
#define stride
Definition: h264pred_template.c:537
FFV1Context::avctx
AVCodecContext * avctx
Definition: ffv1.h:75
ret
ret
Definition: filter_design.txt:187
pred
static const float pred[4]
Definition: siprdata.h:259
FFSWAP
#define FFSWAP(type, a, b)
Definition: macros.h:52
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:436
AV_PIX_FMT_YUVA444P9
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:495
ff_thread_finish_setup
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call ff_thread_finish_setup() afterwards. If some code can 't be moved
AV_PIX_FMT_YUV420P12
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:463
U
#define U(x)
Definition: vpx_arith.h:37
AV_PIX_FMT_YUV422P14
#define AV_PIX_FMT_YUV422P14
Definition: pixfmt.h:468
ff_ffv1_allocate_initial_states
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:148
decode_rgb_frame
static int RENAME() decode_rgb_frame(FFV1Context *s, uint8_t *src[4], int w, int h, int stride[4])
Definition: ffv1dec_template.c:130
AVCodecContext
main external API structure.
Definition: avcodec.h:398
MAX_SLICES
#define MAX_SLICES
Definition: dxva2_hevc.c:31
ThreadFrame
Definition: threadframe.h:27
AVCodecContext::execute
int(* execute)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg), void *arg2, int *ret, int count, int size)
The codec may call this to execute several independent things.
Definition: avcodec.h:1517
av_image_copy
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
Definition: imgutils.c:422
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:832
av_crc
uint32_t av_crc(const AVCRC *ctx, uint32_t crc, const uint8_t *buffer, size_t length)
Calculate the CRC of a block.
Definition: crc.c:392
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:105
temp
else temp
Definition: vf_mcdeint.c:248
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1327
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_PIX_FMT_YUV422P
@ AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
MAX_QUANT_TABLES
#define MAX_QUANT_TABLES
Definition: ffv1.h:47
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FFV1Context
Definition: ffv1.h:73
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
FFV1Context::transparency
int transparency
Definition: ffv1.h:86
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:425
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AV_FIELD_TB
@ AV_FIELD_TB
Top coded first, bottom displayed first.
Definition: codec_par.h:43
AV_PIX_FMT_YUV411P
@ AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:73
ffv1dec_template.c
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:571
ff_ffv1_init_slice_contexts
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:106
ff_log2_run
const uint8_t ff_log2_run[41]
Definition: mathtables.c:116
imgutils.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370
AV_PIX_FMT_YUV410P
@ AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:72
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
FFV1Context::micro_version
int micro_version
Definition: ffv1.h:82
AV_PIX_FMT_YUV440P12
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:465
h
h
Definition: vp9dsp_template.c:2038
RangeCoder
Definition: mss3.c:62
AV_PIX_FMT_YUV444P14
#define AV_PIX_FMT_YUV444P14
Definition: pixfmt.h:469
av_image_check_sar
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:323
AV_PIX_FMT_GRAY12
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:441
PlaneContext::quant_table
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:63
AV_RB24
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:97
decode_slice_header
static int decode_slice_header(const FFV1Context *f, FFV1Context *fs)
Definition: ffv1dec.c:166
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:120
FFV1Context::version
int version
Definition: ffv1.h:81
AV_PIX_FMT_YUVA422P
@ AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:166
AV_PIX_FMT_YUV420P14
#define AV_PIX_FMT_YUV420P14
Definition: pixfmt.h:467