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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 "libavutil/timer.h"
34 #include "avcodec.h"
35 #include "internal.h"
36 #include "get_bits.h"
37 #include "rangecoder.h"
38 #include "golomb.h"
39 #include "mathops.h"
40 #include "ffv1.h"
41 
43  int is_signed)
44 {
45  if (get_rac(c, state + 0))
46  return 0;
47  else {
48  int i, e, a;
49  e = 0;
50  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
51  e++;
52  if (e > 31)
53  return AVERROR_INVALIDDATA;
54  }
55 
56  a = 1;
57  for (i = e - 1; i >= 0; i--)
58  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
59 
60  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
61  return (a ^ e) - e;
62  }
63 }
64 
65 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
66 {
67  return get_symbol_inline(c, state, is_signed);
68 }
69 
70 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
71  int bits)
72 {
73  int k, i, v, ret;
74 
75  i = state->count;
76  k = 0;
77  while (i < state->error_sum) { // FIXME: optimize
78  k++;
79  i += i;
80  }
81 
82  v = get_sr_golomb(gb, k, 12, bits);
83  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
84  v, state->bias, state->error_sum, state->drift, state->count, k);
85 
86  v ^= ((2 * state->drift + state->count) >> 31);
87 
88  ret = fold(v + state->bias, bits);
89 
90  update_vlc_state(state, v);
91 
92  return ret;
93 }
94 
95 #define TYPE int16_t
96 #define RENAME(name) name
97 #include "ffv1dec_template.c"
98 #undef TYPE
99 #undef RENAME
100 
101 #define TYPE int32_t
102 #define RENAME(name) name ## 32
103 #include "ffv1dec_template.c"
104 
106  int w, int h, int stride, int plane_index,
107  int pixel_stride)
108 {
109  int x, y;
110  int16_t *sample[2];
111  sample[0] = s->sample_buffer + 3;
112  sample[1] = s->sample_buffer + w + 6 + 3;
113 
114  s->run_index = 0;
115 
116  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
117 
118  for (y = 0; y < h; y++) {
119  int16_t *temp = sample[0]; // FIXME: try a normal buffer
120 
121  sample[0] = sample[1];
122  sample[1] = temp;
123 
124  sample[1][-1] = sample[0][0];
125  sample[0][w] = sample[0][w - 1];
126 
127 // { START_TIMER
128  if (s->avctx->bits_per_raw_sample <= 8) {
129  decode_line(s, w, sample, plane_index, 8);
130  for (x = 0; x < w; x++)
131  src[x*pixel_stride + stride * y] = sample[1][x];
132  } else {
133  decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
134  if (s->packed_at_lsb) {
135  for (x = 0; x < w; x++) {
136  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
137  }
138  } else {
139  for (x = 0; x < w; x++) {
140  ((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);
141  }
142  }
143  }
144 // STOP_TIMER("decode-line") }
145  }
146 }
147 
149 {
150  RangeCoder *c = &fs->c;
152  unsigned ps, i, context_count;
153  memset(state, 128, sizeof(state));
154 
155  av_assert0(f->version > 2);
156 
157  fs->slice_x = get_symbol(c, state, 0) * f->width ;
158  fs->slice_y = get_symbol(c, state, 0) * f->height;
159  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
160  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
161 
162  fs->slice_x /= f->num_h_slices;
163  fs->slice_y /= f->num_v_slices;
164  fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
165  fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
166  if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
167  return -1;
168  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
169  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
170  return -1;
171 
172  for (i = 0; i < f->plane_count; i++) {
173  PlaneContext * const p = &fs->plane[i];
174  int idx = get_symbol(c, state, 0);
175  if (idx >= (unsigned)f->quant_table_count) {
176  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
177  return -1;
178  }
179  p->quant_table_index = idx;
180  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
181  context_count = f->context_count[idx];
182 
183  if (p->context_count < context_count) {
184  av_freep(&p->state);
185  av_freep(&p->vlc_state);
186  }
188  }
189 
190  ps = get_symbol(c, state, 0);
191  if (ps == 1) {
192  f->cur->interlaced_frame = 1;
193  f->cur->top_field_first = 1;
194  } else if (ps == 2) {
195  f->cur->interlaced_frame = 1;
196  f->cur->top_field_first = 0;
197  } else if (ps == 3) {
198  f->cur->interlaced_frame = 0;
199  }
200  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
201  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
202 
203  if (av_image_check_sar(f->width, f->height,
204  f->cur->sample_aspect_ratio) < 0) {
205  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
208  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
209  }
210 
211  if (fs->version > 3) {
212  fs->slice_reset_contexts = get_rac(c, state);
213  fs->slice_coding_mode = get_symbol(c, state, 0);
214  if (fs->slice_coding_mode != 1) {
215  fs->slice_rct_by_coef = get_symbol(c, state, 0);
216  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
217  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
218  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
219  return AVERROR_INVALIDDATA;
220  }
221  }
222  }
223 
224  return 0;
225 }
226 
227 static int decode_slice(AVCodecContext *c, void *arg)
228 {
229  FFV1Context *fs = *(void **)arg;
230  FFV1Context *f = fs->avctx->priv_data;
231  int width, height, x, y, ret;
232  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
233  AVFrame * const p = f->cur;
234  int i, si;
235 
236  for( si=0; fs != f->slice_context[si]; si ++)
237  ;
238 
239  if(f->fsrc && !p->key_frame)
241 
242  if(f->fsrc && !p->key_frame) {
243  FFV1Context *fssrc = f->fsrc->slice_context[si];
244  FFV1Context *fsdst = f->slice_context[si];
245  av_assert1(fsdst->plane_count == fssrc->plane_count);
246  av_assert1(fsdst == fs);
247 
248  if (!p->key_frame)
249  fsdst->slice_damaged |= fssrc->slice_damaged;
250 
251  for (i = 0; i < f->plane_count; i++) {
252  PlaneContext *psrc = &fssrc->plane[i];
253  PlaneContext *pdst = &fsdst->plane[i];
254 
255  av_free(pdst->state);
256  av_free(pdst->vlc_state);
257  memcpy(pdst, psrc, sizeof(*pdst));
258  pdst->state = NULL;
259  pdst->vlc_state = NULL;
260 
261  if (fssrc->ac) {
263  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
264  } else {
265  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
266  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
267  }
268  }
269  }
270 
271  fs->slice_rct_by_coef = 1;
272  fs->slice_rct_ry_coef = 1;
273 
274  if (f->version > 2) {
275  if (ff_ffv1_init_slice_state(f, fs) < 0)
276  return AVERROR(ENOMEM);
277  if (decode_slice_header(f, fs) < 0) {
278  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
279  fs->slice_damaged = 1;
280  return AVERROR_INVALIDDATA;
281  }
282  }
283  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
284  return ret;
285  if (f->cur->key_frame || fs->slice_reset_contexts)
287 
288  width = fs->slice_width;
289  height = fs->slice_height;
290  x = fs->slice_x;
291  y = fs->slice_y;
292 
293  if (fs->ac == AC_GOLOMB_RICE) {
294  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
295  get_rac(&fs->c, (uint8_t[]) { 129 });
296  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
297  init_get_bits(&fs->gb,
298  fs->c.bytestream_start + fs->ac_byte_count,
299  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
300  }
301 
302  av_assert1(width && height);
303  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
304  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
305  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
306  const int cx = x >> f->chroma_h_shift;
307  const int cy = y >> f->chroma_v_shift;
308  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
309 
310  if (f->chroma_planes) {
311  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
312  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
313  }
314  if (fs->transparency)
315  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);
316  } else if (f->colorspace == 0) {
317  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
318  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
319  } else if (f->use32bit) {
320  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
321  p->data[1] + ps * x + y * p->linesize[1],
322  p->data[2] + ps * x + y * p->linesize[2] };
323  decode_rgb_frame32(fs, planes, width, height, p->linesize);
324  } else {
325  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
326  p->data[1] + ps * x + y * p->linesize[1],
327  p->data[2] + ps * x + y * p->linesize[2] };
328  decode_rgb_frame(fs, planes, width, height, p->linesize);
329  }
330  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
331  int v;
332  get_rac(&fs->c, (uint8_t[]) { 129 });
333  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
334  if (v) {
335  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
336  fs->slice_damaged = 1;
337  }
338  }
339 
340  emms_c();
341 
342  ff_thread_report_progress(&f->picture, si, 0);
343 
344  return 0;
345 }
346 
347 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
348 {
349  int v;
350  int i = 0;
352 
353  memset(state, 128, sizeof(state));
354 
355  for (v = 0; i < 128; v++) {
356  unsigned len = get_symbol(c, state, 0) + 1;
357 
358  if (len > 128 - i || !len)
359  return AVERROR_INVALIDDATA;
360 
361  while (len--) {
362  quant_table[i] = scale * v;
363  i++;
364  }
365  }
366 
367  for (i = 1; i < 128; i++)
368  quant_table[256 - i] = -quant_table[i];
369  quant_table[128] = -quant_table[127];
370 
371  return 2 * v - 1;
372 }
373 
375  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
376 {
377  int i;
378  int context_count = 1;
379 
380  for (i = 0; i < 5; i++) {
381  int ret = read_quant_table(c, quant_table[i], context_count);
382  if (ret < 0)
383  return ret;
384  context_count *= ret;
385  if (context_count > 32768U) {
386  return AVERROR_INVALIDDATA;
387  }
388  }
389  return (context_count + 1) / 2;
390 }
391 
393 {
394  RangeCoder *const c = &f->c;
396  int i, j, k, ret;
397  uint8_t state2[32][CONTEXT_SIZE];
398  unsigned crc = 0;
399 
400  memset(state2, 128, sizeof(state2));
401  memset(state, 128, sizeof(state));
402 
404  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
405 
406  f->version = get_symbol(c, state, 0);
407  if (f->version < 2) {
408  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
409  return AVERROR_INVALIDDATA;
410  }
411  if (f->version > 2) {
412  c->bytestream_end -= 4;
413  f->micro_version = get_symbol(c, state, 0);
414  if (f->micro_version < 0)
415  return AVERROR_INVALIDDATA;
416  }
417  f->ac = get_symbol(c, state, 0);
418 
419  if (f->ac == AC_RANGE_CUSTOM_TAB) {
420  for (i = 1; i < 256; i++)
421  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
422  }
423 
424  f->colorspace = get_symbol(c, state, 0); //YUV cs type
425  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
426  f->chroma_planes = get_rac(c, state);
427  f->chroma_h_shift = get_symbol(c, state, 0);
428  f->chroma_v_shift = get_symbol(c, state, 0);
429  f->transparency = get_rac(c, state);
430  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
431  f->num_h_slices = 1 + get_symbol(c, state, 0);
432  f->num_v_slices = 1 + get_symbol(c, state, 0);
433 
434  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
435  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
437  return AVERROR_INVALIDDATA;
438  }
439 
440  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
441  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
442  ) {
443  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
444  return AVERROR_INVALIDDATA;
445  }
446 
447  f->quant_table_count = get_symbol(c, state, 0);
448  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
449  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
450  f->quant_table_count = 0;
451  return AVERROR_INVALIDDATA;
452  }
453 
454  for (i = 0; i < f->quant_table_count; i++) {
455  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
456  if (f->context_count[i] < 0) {
457  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
458  return AVERROR_INVALIDDATA;
459  }
460  }
461  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
462  return ret;
463 
464  for (i = 0; i < f->quant_table_count; i++)
465  if (get_rac(c, state)) {
466  for (j = 0; j < f->context_count[i]; j++)
467  for (k = 0; k < CONTEXT_SIZE; k++) {
468  int pred = j ? f->initial_states[i][j - 1][k] : 128;
469  f->initial_states[i][j][k] =
470  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
471  }
472  }
473 
474  if (f->version > 2) {
475  f->ec = get_symbol(c, state, 0);
476  if (f->micro_version > 2)
477  f->intra = get_symbol(c, state, 0);
478  }
479 
480  if (f->version > 2) {
481  unsigned v;
484  if (v || f->avctx->extradata_size < 4) {
485  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
486  return AVERROR_INVALIDDATA;
487  }
488  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
489  }
490 
491  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
493  "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",
494  f->version, f->micro_version,
495  f->ac,
496  f->colorspace,
499  f->transparency,
500  f->num_h_slices, f->num_v_slices,
502  f->ec,
503  f->intra,
504  crc
505  );
506  return 0;
507 }
508 
509 static int read_header(FFV1Context *f)
510 {
512  int i, j, context_count = -1; //-1 to avoid warning
513  RangeCoder *const c = &f->slice_context[0]->c;
514 
515  memset(state, 128, sizeof(state));
516 
517  if (f->version < 2) {
519  unsigned v= get_symbol(c, state, 0);
520  if (v >= 2) {
521  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
522  return AVERROR_INVALIDDATA;
523  }
524  f->version = v;
525  f->ac = get_symbol(c, state, 0);
526 
527  if (f->ac == AC_RANGE_CUSTOM_TAB) {
528  for (i = 1; i < 256; i++)
529  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
530  }
531 
532  colorspace = get_symbol(c, state, 0); //YUV cs type
533  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
534  chroma_planes = get_rac(c, state);
535  chroma_h_shift = get_symbol(c, state, 0);
536  chroma_v_shift = get_symbol(c, state, 0);
537  transparency = get_rac(c, state);
538  if (colorspace == 0 && f->avctx->skip_alpha)
539  transparency = 0;
540 
541  if (f->plane_count) {
542  if (colorspace != f->colorspace ||
543  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
544  chroma_planes != f->chroma_planes ||
545  chroma_h_shift != f->chroma_h_shift ||
546  chroma_v_shift != f->chroma_v_shift ||
547  transparency != f->transparency) {
548  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
549  return AVERROR_INVALIDDATA;
550  }
551  }
552 
553  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
554  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
555  chroma_h_shift, chroma_v_shift);
556  return AVERROR_INVALIDDATA;
557  }
558 
559  f->colorspace = colorspace;
565 
566  f->plane_count = 2 + f->transparency;
567  }
568 
569  if (f->colorspace == 0) {
570  if (!f->transparency && !f->chroma_planes) {
571  if (f->avctx->bits_per_raw_sample <= 8)
573  else if (f->avctx->bits_per_raw_sample == 10) {
574  f->packed_at_lsb = 1;
576  } else if (f->avctx->bits_per_raw_sample == 12) {
577  f->packed_at_lsb = 1;
579  } else if (f->avctx->bits_per_raw_sample == 16) {
580  f->packed_at_lsb = 1;
582  } else if (f->avctx->bits_per_raw_sample < 16) {
584  } else
585  return AVERROR(ENOSYS);
586  } else if (f->transparency && !f->chroma_planes) {
587  if (f->avctx->bits_per_raw_sample <= 8)
589  else
590  return AVERROR(ENOSYS);
591  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
592  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
593  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
594  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
595  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
596  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
597  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
598  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
599  }
600  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
601  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
602  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
603  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
604  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
605  }
606  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
607  f->packed_at_lsb = 1;
608  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
609  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
610  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
611  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
612  }
613  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
614  f->packed_at_lsb = 1;
615  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
616  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
617  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
618  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
619  }
620  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
621  f->packed_at_lsb = 1;
622  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
623  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
624  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
625  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
626  }
627  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
628  f->packed_at_lsb = 1;
629  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
630  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
631  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
632  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
633  }
634  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
635  f->packed_at_lsb = 1;
636  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
637  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
638  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
639  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
640  }
641  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
642  f->packed_at_lsb = 1;
643  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
644  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
645  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
646  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
647  }
648  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
649  f->packed_at_lsb = 1;
650  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
651  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
652  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
653  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
654  }
655  }
656  } else if (f->colorspace == 1) {
657  if (f->chroma_h_shift || f->chroma_v_shift) {
659  "chroma subsampling not supported in this colorspace\n");
660  return AVERROR(ENOSYS);
661  }
662  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
664  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
666  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
668  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
670  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
672  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
674  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
676  f->use32bit = 1;
677  }
678  } else {
679  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
680  return AVERROR(ENOSYS);
681  }
682  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
683  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
684  return AVERROR(ENOSYS);
685  }
686 
687  ff_dlog(f->avctx, "%d %d %d\n",
689  if (f->version < 2) {
690  context_count = read_quant_tables(c, f->quant_table);
691  if (context_count < 0) {
692  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
693  return AVERROR_INVALIDDATA;
694  }
696  } else if (f->version < 3) {
697  f->slice_count = get_symbol(c, state, 0);
698  } else {
699  const uint8_t *p = c->bytestream_end;
700  for (f->slice_count = 0;
701  f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
702  f->slice_count++) {
703  int trailer = 3 + 5*!!f->ec;
704  int size = AV_RB24(p-trailer);
705  if (size + trailer > p - c->bytestream_start)
706  break;
707  p -= size + trailer;
708  }
709  }
710  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
711  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
712  return AVERROR_INVALIDDATA;
713  }
714 
715  for (j = 0; j < f->slice_count; j++) {
716  FFV1Context *fs = f->slice_context[j];
717  fs->ac = f->ac;
718  fs->packed_at_lsb = f->packed_at_lsb;
719 
720  fs->slice_damaged = 0;
721 
722  if (f->version == 2) {
723  fs->slice_x = get_symbol(c, state, 0) * f->width ;
724  fs->slice_y = get_symbol(c, state, 0) * f->height;
725  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
726  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
727 
728  fs->slice_x /= f->num_h_slices;
729  fs->slice_y /= f->num_v_slices;
730  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
731  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
732  if ((unsigned)fs->slice_width > f->width ||
733  (unsigned)fs->slice_height > f->height)
734  return AVERROR_INVALIDDATA;
735  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
736  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
737  return AVERROR_INVALIDDATA;
738  }
739 
740  for (i = 0; i < f->plane_count; i++) {
741  PlaneContext *const p = &fs->plane[i];
742 
743  if (f->version == 2) {
744  int idx = get_symbol(c, state, 0);
745  if (idx > (unsigned)f->quant_table_count) {
747  "quant_table_index out of range\n");
748  return AVERROR_INVALIDDATA;
749  }
750  p->quant_table_index = idx;
751  memcpy(p->quant_table, f->quant_tables[idx],
752  sizeof(p->quant_table));
753  context_count = f->context_count[idx];
754  } else {
755  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
756  }
757 
758  if (f->version <= 2) {
759  av_assert0(context_count >= 0);
760  if (p->context_count < context_count) {
761  av_freep(&p->state);
762  av_freep(&p->vlc_state);
763  }
765  }
766  }
767  }
768  return 0;
769 }
770 
772 {
773  FFV1Context *f = avctx->priv_data;
774  int ret;
775 
776  if ((ret = ff_ffv1_common_init(avctx)) < 0)
777  return ret;
778 
779  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
780  return ret;
781 
782  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
783  return ret;
784 
785  avctx->internal->allocate_progress = 1;
786 
787  return 0;
788 }
789 
790 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
791 {
792  uint8_t *buf = avpkt->data;
793  int buf_size = avpkt->size;
794  FFV1Context *f = avctx->priv_data;
795  RangeCoder *const c = &f->slice_context[0]->c;
796  int i, ret;
797  uint8_t keystate = 128;
798  uint8_t *buf_p;
799  AVFrame *p;
800 
801  if (f->last_picture.f)
804 
805  f->cur = p = f->picture.f;
806 
807  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
808  /* we have interlaced material flagged in container */
809  p->interlaced_frame = 1;
810  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
811  p->top_field_first = 1;
812  }
813 
814  f->avctx = avctx;
815  ff_init_range_decoder(c, buf, buf_size);
816  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
817 
818  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
819  if (get_rac(c, &keystate)) {
820  p->key_frame = 1;
821  f->key_frame_ok = 0;
822  if ((ret = read_header(f)) < 0)
823  return ret;
824  f->key_frame_ok = 1;
825  } else {
826  if (!f->key_frame_ok) {
827  av_log(avctx, AV_LOG_ERROR,
828  "Cannot decode non-keyframe without valid keyframe\n");
829  return AVERROR_INVALIDDATA;
830  }
831  p->key_frame = 0;
832  }
833 
834  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
835  return ret;
836 
837  if (avctx->debug & FF_DEBUG_PICT_INFO)
838  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
839  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
840 
841  ff_thread_finish_setup(avctx);
842 
843  buf_p = buf + buf_size;
844  for (i = f->slice_count - 1; i >= 0; i--) {
845  FFV1Context *fs = f->slice_context[i];
846  int trailer = 3 + 5*!!f->ec;
847  int v;
848 
849  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
850  else v = buf_p - c->bytestream_start;
851  if (buf_p - c->bytestream_start < v) {
852  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
853  ff_thread_report_progress(&f->picture, INT_MAX, 0);
854  return AVERROR_INVALIDDATA;
855  }
856  buf_p -= v;
857 
858  if (f->ec) {
859  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
860  if (crc) {
861  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
862  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
863  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
864  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
865  } else if (ts != AV_NOPTS_VALUE) {
866  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
867  } else {
868  av_log(f->avctx, AV_LOG_ERROR, "\n");
869  }
870  fs->slice_damaged = 1;
871  }
872  if (avctx->debug & FF_DEBUG_PICT_INFO) {
873  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08X\n", i, AV_RB32(buf_p + v - 4));
874  }
875  }
876 
877  if (i) {
878  ff_init_range_decoder(&fs->c, buf_p, v);
879  } else
880  fs->c.bytestream_end = buf_p + v;
881 
882  fs->avctx = avctx;
883  fs->cur = p;
884  }
885 
886  avctx->execute(avctx,
887  decode_slice,
888  &f->slice_context[0],
889  NULL,
890  f->slice_count,
891  sizeof(void*));
892 
893  for (i = f->slice_count - 1; i >= 0; i--) {
894  FFV1Context *fs = f->slice_context[i];
895  int j;
896  if (fs->slice_damaged && f->last_picture.f->data[0]) {
898  const uint8_t *src[4];
899  uint8_t *dst[4];
900  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
901  for (j = 0; j < 4; j++) {
902  int pixshift = desc->comp[j].depth > 8;
903  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
904  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
905  dst[j] = p->data[j] + p->linesize[j] *
906  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
907  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
908  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
909  }
910  av_image_copy(dst, p->linesize, src,
911  f->last_picture.f->linesize,
912  avctx->pix_fmt,
913  fs->slice_width,
914  fs->slice_height);
915  }
916  }
917  ff_thread_report_progress(&f->picture, INT_MAX, 0);
918 
919  f->picture_number++;
920 
921  if (f->last_picture.f)
923  f->cur = NULL;
924  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
925  return ret;
926 
927  *got_frame = 1;
928 
929  return buf_size;
930 }
931 
932 #if HAVE_THREADS
934 {
935  FFV1Context *f = avctx->priv_data;
936  int i, ret;
937 
938  f->picture.f = NULL;
939  f->last_picture.f = NULL;
940  f->sample_buffer = NULL;
941  f->max_slice_count = 0;
942  f->slice_count = 0;
943 
944  for (i = 0; i < f->quant_table_count; i++) {
945  av_assert0(f->version > 1);
947  f->context_count[i] * sizeof(*f->initial_states[i]));
948  }
949 
950  f->picture.f = av_frame_alloc();
952 
953  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
954  return ret;
955 
956  return 0;
957 }
958 #endif
959 
960 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
961 {
962  fsdst->version = fsrc->version;
963  fsdst->micro_version = fsrc->micro_version;
964  fsdst->chroma_planes = fsrc->chroma_planes;
965  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
966  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
967  fsdst->transparency = fsrc->transparency;
968  fsdst->plane_count = fsrc->plane_count;
969  fsdst->ac = fsrc->ac;
970  fsdst->colorspace = fsrc->colorspace;
971 
972  fsdst->ec = fsrc->ec;
973  fsdst->intra = fsrc->intra;
974  fsdst->slice_damaged = fssrc->slice_damaged;
975  fsdst->key_frame_ok = fsrc->key_frame_ok;
976 
978  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
979  fsdst->slice_count = fsrc->slice_count;
980  if (fsrc->version<3){
981  fsdst->slice_x = fssrc->slice_x;
982  fsdst->slice_y = fssrc->slice_y;
983  fsdst->slice_width = fssrc->slice_width;
984  fsdst->slice_height = fssrc->slice_height;
985  }
986 }
987 
988 #if HAVE_THREADS
989 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
990 {
991  FFV1Context *fsrc = src->priv_data;
992  FFV1Context *fdst = dst->priv_data;
993  int i, ret;
994 
995  if (dst == src)
996  return 0;
997 
998  {
1002  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1003  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1004 
1005  memcpy(fdst, fsrc, sizeof(*fdst));
1006  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1007  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1008  fdst->picture = picture;
1009  fdst->last_picture = last_picture;
1010  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1011  FFV1Context *fssrc = fsrc->slice_context[i];
1012  FFV1Context *fsdst = fdst->slice_context[i];
1013  copy_fields(fsdst, fssrc, fsrc);
1014  }
1015  av_assert0(!fdst->plane[0].state);
1016  av_assert0(!fdst->sample_buffer);
1017  }
1018 
1019  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1020 
1021 
1022  ff_thread_release_buffer(dst, &fdst->picture);
1023  if (fsrc->picture.f->data[0]) {
1024  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1025  return ret;
1026  }
1027 
1028  fdst->fsrc = fsrc;
1029 
1030  return 0;
1031 }
1032 #endif
1033 
1035  .name = "ffv1",
1036  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1037  .type = AVMEDIA_TYPE_VIDEO,
1038  .id = AV_CODEC_ID_FFV1,
1039  .priv_data_size = sizeof(FFV1Context),
1040  .init = decode_init,
1041  .close = ff_ffv1_close,
1042  .decode = decode_frame,
1044  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1045  .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1047  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP
1048 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:151
#define NULL
Definition: coverity.c:32
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:388
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:382
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2333
This structure describes decoded (raw) audio or video data.
Definition: frame.h:187
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:384
8 bits gray, 8 bits alpha
Definition: pixfmt.h:154
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:385
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int init_thread_copy(AVCodecContext *avctx)
Definition: tta.c:392
AVFrame * f
Definition: thread.h:36
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:69
int quant_table_count
Definition: ffv1.h:126
else temp
Definition: vf_mcdeint.c:259
const char * desc
Definition: nvenc.c:60
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:227
int slice_height
Definition: ffv1.h:134
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
int16_t * sample_buffer
Definition: ffv1.h:111
int version
Definition: ffv1.h:87
int micro_version
Definition: ffv1.h:88
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1648
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:367
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:347
static av_flatten int get_symbol_inline(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:42
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1950
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:355
static struct @257 state
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:790
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3123
FF Video Codec 1 (a lossless codec)
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
#define src
Definition: vp8dsp.c:254
#define sample
int height
Definition: ffv1.h:89
AVCodec.
Definition: avcodec.h:3671
uint8_t one_state[256]
Definition: rangecoder.h:41
int slice_reset_contexts
Definition: ffv1.h:137
enum AVPictureType last_picture
Definition: movenc.c:68
int slice_rct_by_coef
Definition: ffv1.h:139
#define AV_PIX_FMT_GRAY10
Definition: pixfmt.h:333
int plane_count
Definition: ffv1.h:100
int slice_damaged
Definition: ffv1.h:118
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:334
ThreadFrame picture
Definition: ffv1.h:96
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:374
uint8_t bits
Definition: crc.c:296
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
#define av_cold
Definition: attributes.h:82
static int get_rac(RangeCoder *c, uint8_t *const state)
Definition: rangecoder.h:115
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:150
AVOptions.
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:2964
int8_t bias
Definition: ffv1.h:64
RangeCoder c
Definition: ffv1.h:82
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:388
av_cold int ff_ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:42
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1837
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:381
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:87
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:366
int slice_y
Definition: ffv1.h:136
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:108
ThreadFrame last_picture
Definition: ffv1.h:96
Public header for CRC hash function implementation.
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:210
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:286
#define height
uint8_t * data
Definition: avcodec.h:1647
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
uint8_t count
Definition: ffv1.h:65
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
Definition: utils.c:3973
#define ff_dlog(a,...)
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:364
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:325
VlcState * vlc_state
Definition: ffv1.h:73
ptrdiff_t size
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:356
void ff_thread_finish_setup(AVCodecContext *avctx)
If the codec defines update_thread_context(), call this when they are ready for the next thread to st...
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:387
high precision timer, useful to profile code
#define av_log(a,...)
int bits_per_raw_sample
Definition: ffv1.h:122
int slice_width
Definition: ffv1.h:133
GetBitContext gb
Definition: ffv1.h:83
#define U(x)
Definition: vp56_arith.h:37
AVFrame * cur
Definition: ffv1.h:99
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:3433
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:188
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static int decode_slice_header(FFV1Context *f, FFV1Context *fs)
Definition: ffv1dec.c:148
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
Wrapper around release_buffer() frame-for multithreaded codecs.
int16_t quant_tables[MAX_QUANT_TABLES][MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:105
#define AVERROR(e)
Definition: error.h:43
int skip_alpha
Skip processing alpha if supported by codec.
Definition: avcodec.h:3491
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:180
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int context_count
Definition: ffv1.h:71
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:389
const char * arg
Definition: jacosubdec.c:66
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3678
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:354
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:167
#define MAX_SLICES
Definition: dxva2_hevc.c:33
void * av_memdup(const void *p, size_t size)
Duplicate a buffer with av_malloc().
Definition: mem.c:269
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1057
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:385
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:70
uint8_t * bytestream
Definition: rangecoder.h:43
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:219
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:101
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:104
#define AC_RANGE_CUSTOM_TAB
Definition: ffv1.h:58
int run_index
Definition: ffv1.h:109
Definition: ffv1.h:61
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:349
#define av_flatten
Definition: attributes.h:88
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:65
uint8_t state_transition[256]
Definition: ffv1.h:107
static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
Definition: ffv1dec.c:960
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:261
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:370
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:335
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FFMIN(a, b)
Definition: common.h:96
int num_h_slices
Definition: ffv1.h:132
#define width
#define MAX_QUANT_TABLES
Definition: ffv1.h:53
int colorspace
Definition: ffv1.h:110
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:105
static float quant_table[96]
Definition: binkaudio.c:42
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:164
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:357
int slice_count
Definition: ffv1.h:129
int max_slice_count
Definition: ffv1.h:130
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:63
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:117
av_cold int ff_ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:67
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:386
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:102
int16_t drift
Definition: ffv1.h:62
int packed_at_lsb
Definition: ffv1.h:123
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:350
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:369
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:509
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:362
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1061
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:106
Libavcodec external API header.
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:87
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:218
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:189
int debug
debug
Definition: avcodec.h:2963
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
main external API structure.
Definition: avcodec.h:1722
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:326
int intra
Definition: ffv1.h:117
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:266
void * buf
Definition: avisynth_c.h:690
int extradata_size
Definition: avcodec.h:1838
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:351
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
int use32bit
Definition: ffv1.h:114
Rational number (pair of numerator and denominator).
Definition: rational.h:58
av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size)
Definition: rangecoder.c:53
#define AC_GOLOMB_RICE
Definition: ffv1.h:56
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:425
int picture_number
Definition: ffv1.h:94
uint16_t error_sum
Definition: ffv1.h:63
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:348
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:126
int key_frame_ok
Definition: ffv1.h:119
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:368
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:352
int quant_table_index
Definition: ffv1.h:70
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:358
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:201
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:343
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:105
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
Y , 8bpp.
Definition: pixfmt.h:70
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
static double c[64]
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:182
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:383
uint8_t(* state)[CONTEXT_SIZE]
Definition: ffv1.h:72
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
int den
Denominator.
Definition: rational.h:60
int slice_coding_mode
Definition: ffv1.h:138
uint8_t * bytestream_start
Definition: rangecoder.h:42
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:771
void * priv_data
Definition: avcodec.h:1764
int chroma_h_shift
Definition: ffv1.h:91
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:103
int transparency
Definition: ffv1.h:92
#define av_free(p)
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:3191
struct FFV1Context * fsrc
Definition: ffv1.h:97
int chroma_v_shift
Definition: ffv1.h:91
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:330
int len
int chroma_planes
Definition: ffv1.h:90
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1772
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:256
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:128
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1646
#define av_noinline
Definition: attributes.h:62
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2481
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: ffmpeg.c:2242
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
Definition: common.h:99
int ec
Definition: ffv1.h:116
int depth
Number of bits in the component.
Definition: pixdesc.h:58
static int get_sr_golomb(GetBitContext *gb, int k, int limit, int esc_len)
read signed golomb rice code (ffv1).
Definition: golomb.h:370
int num_v_slices
Definition: ffv1.h:131
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1624
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:392
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1389
AVCodecContext * avctx
Definition: ffv1.h:81
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:994
int slice_x
Definition: ffv1.h:135
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:363
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1640
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1034
int step
Number of elements between 2 horizontally consecutive pixels.
Definition: pixdesc.h:41
int width
Definition: ffv1.h:89
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:330
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140