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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;
49  unsigned a;
50  e = 0;
51  while (get_rac(c, state + 1 + FFMIN(e, 9))) { // 1..10
52  e++;
53  if (e > 31)
54  return AVERROR_INVALIDDATA;
55  }
56 
57  a = 1;
58  for (i = e - 1; i >= 0; i--)
59  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
60 
61  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
62  return (a ^ e) - e;
63  }
64 }
65 
66 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
67 {
68  return get_symbol_inline(c, state, is_signed);
69 }
70 
71 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
72  int bits)
73 {
74  int k, i, v, ret;
75 
76  i = state->count;
77  k = 0;
78  while (i < state->error_sum) { // FIXME: optimize
79  k++;
80  i += i;
81  }
82 
83  v = get_sr_golomb(gb, k, 12, bits);
84  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
85  v, state->bias, state->error_sum, state->drift, state->count, k);
86 
87  v ^= ((2 * state->drift + state->count) >> 31);
88 
89  ret = fold(v + state->bias, bits);
90 
91  update_vlc_state(state, v);
92 
93  return ret;
94 }
95 
96 #define TYPE int16_t
97 #define RENAME(name) name
98 #include "ffv1dec_template.c"
99 #undef TYPE
100 #undef RENAME
101 
102 #define TYPE int32_t
103 #define RENAME(name) name ## 32
104 #include "ffv1dec_template.c"
105 
107  int w, int h, int stride, int plane_index,
108  int pixel_stride)
109 {
110  int x, y;
111  int16_t *sample[2];
112  sample[0] = s->sample_buffer + 3;
113  sample[1] = s->sample_buffer + w + 6 + 3;
114 
115  s->run_index = 0;
116 
117  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
118 
119  for (y = 0; y < h; y++) {
120  int16_t *temp = sample[0]; // FIXME: try a normal buffer
121 
122  sample[0] = sample[1];
123  sample[1] = temp;
124 
125  sample[1][-1] = sample[0][0];
126  sample[0][w] = sample[0][w - 1];
127 
128 // { START_TIMER
129  if (s->avctx->bits_per_raw_sample <= 8) {
130  decode_line(s, w, sample, plane_index, 8);
131  for (x = 0; x < w; x++)
132  src[x*pixel_stride + stride * y] = sample[1][x];
133  } else {
134  decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
135  if (s->packed_at_lsb) {
136  for (x = 0; x < w; x++) {
137  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
138  }
139  } else {
140  for (x = 0; x < w; x++) {
141  ((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);
142  }
143  }
144  }
145 // STOP_TIMER("decode-line") }
146  }
147 }
148 
150 {
151  RangeCoder *c = &fs->c;
153  unsigned ps, i, context_count;
154  memset(state, 128, sizeof(state));
155 
156  av_assert0(f->version > 2);
157 
158  fs->slice_x = get_symbol(c, state, 0) * f->width ;
159  fs->slice_y = get_symbol(c, state, 0) * f->height;
160  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
161  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
162 
163  fs->slice_x /= f->num_h_slices;
164  fs->slice_y /= f->num_v_slices;
165  fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
166  fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
167  if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
168  return -1;
169  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
170  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
171  return -1;
172 
173  for (i = 0; i < f->plane_count; i++) {
174  PlaneContext * const p = &fs->plane[i];
175  int idx = get_symbol(c, state, 0);
176  if (idx >= (unsigned)f->quant_table_count) {
177  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
178  return -1;
179  }
180  p->quant_table_index = idx;
181  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
182  context_count = f->context_count[idx];
183 
184  if (p->context_count < context_count) {
185  av_freep(&p->state);
186  av_freep(&p->vlc_state);
187  }
189  }
190 
191  ps = get_symbol(c, state, 0);
192  if (ps == 1) {
193  f->cur->interlaced_frame = 1;
194  f->cur->top_field_first = 1;
195  } else if (ps == 2) {
196  f->cur->interlaced_frame = 1;
197  f->cur->top_field_first = 0;
198  } else if (ps == 3) {
199  f->cur->interlaced_frame = 0;
200  }
201  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
202  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
203 
204  if (av_image_check_sar(f->width, f->height,
205  f->cur->sample_aspect_ratio) < 0) {
206  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
209  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
210  }
211 
212  if (fs->version > 3) {
213  fs->slice_reset_contexts = get_rac(c, state);
214  fs->slice_coding_mode = get_symbol(c, state, 0);
215  if (fs->slice_coding_mode != 1) {
216  fs->slice_rct_by_coef = get_symbol(c, state, 0);
217  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
218  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
219  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
220  return AVERROR_INVALIDDATA;
221  }
222  }
223  }
224 
225  return 0;
226 }
227 
228 static int decode_slice(AVCodecContext *c, void *arg)
229 {
230  FFV1Context *fs = *(void **)arg;
231  FFV1Context *f = fs->avctx->priv_data;
232  int width, height, x, y, ret;
233  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
234  AVFrame * const p = f->cur;
235  int i, si;
236 
237  for( si=0; fs != f->slice_context[si]; si ++)
238  ;
239 
240  if(f->fsrc && !p->key_frame)
242 
243  if(f->fsrc && !p->key_frame) {
244  FFV1Context *fssrc = f->fsrc->slice_context[si];
245  FFV1Context *fsdst = f->slice_context[si];
246  av_assert1(fsdst->plane_count == fssrc->plane_count);
247  av_assert1(fsdst == fs);
248 
249  if (!p->key_frame)
250  fsdst->slice_damaged |= fssrc->slice_damaged;
251 
252  for (i = 0; i < f->plane_count; i++) {
253  PlaneContext *psrc = &fssrc->plane[i];
254  PlaneContext *pdst = &fsdst->plane[i];
255 
256  av_free(pdst->state);
257  av_free(pdst->vlc_state);
258  memcpy(pdst, psrc, sizeof(*pdst));
259  pdst->state = NULL;
260  pdst->vlc_state = NULL;
261 
262  if (fssrc->ac) {
264  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
265  } else {
266  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
267  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
268  }
269  }
270  }
271 
272  fs->slice_rct_by_coef = 1;
273  fs->slice_rct_ry_coef = 1;
274 
275  if (f->version > 2) {
276  if (ff_ffv1_init_slice_state(f, fs) < 0)
277  return AVERROR(ENOMEM);
278  if (decode_slice_header(f, fs) < 0) {
279  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
280  fs->slice_damaged = 1;
281  return AVERROR_INVALIDDATA;
282  }
283  }
284  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
285  return ret;
286  if (f->cur->key_frame || fs->slice_reset_contexts)
288 
289  width = fs->slice_width;
290  height = fs->slice_height;
291  x = fs->slice_x;
292  y = fs->slice_y;
293 
294  if (fs->ac == AC_GOLOMB_RICE) {
295  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
296  get_rac(&fs->c, (uint8_t[]) { 129 });
297  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
298  init_get_bits(&fs->gb,
299  fs->c.bytestream_start + fs->ac_byte_count,
300  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
301  }
302 
303  av_assert1(width && height);
304  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
305  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
306  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
307  const int cx = x >> f->chroma_h_shift;
308  const int cy = y >> f->chroma_v_shift;
309  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
310 
311  if (f->chroma_planes) {
312  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
313  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
314  }
315  if (fs->transparency)
316  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);
317  } else if (f->colorspace == 0) {
318  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
319  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
320  } else if (f->use32bit) {
321  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
322  p->data[1] + ps * x + y * p->linesize[1],
323  p->data[2] + ps * x + y * p->linesize[2] };
324  decode_rgb_frame32(fs, planes, width, height, p->linesize);
325  } else {
326  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
327  p->data[1] + ps * x + y * p->linesize[1],
328  p->data[2] + ps * x + y * p->linesize[2] };
329  decode_rgb_frame(fs, planes, width, height, p->linesize);
330  }
331  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
332  int v;
333  get_rac(&fs->c, (uint8_t[]) { 129 });
334  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
335  if (v) {
336  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
337  fs->slice_damaged = 1;
338  }
339  }
340 
341  emms_c();
342 
343  ff_thread_report_progress(&f->picture, si, 0);
344 
345  return 0;
346 }
347 
348 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
349 {
350  int v;
351  int i = 0;
353 
354  memset(state, 128, sizeof(state));
355 
356  for (v = 0; i < 128; v++) {
357  unsigned len = get_symbol(c, state, 0) + 1;
358 
359  if (len > 128 - i || !len)
360  return AVERROR_INVALIDDATA;
361 
362  while (len--) {
363  quant_table[i] = scale * v;
364  i++;
365  }
366  }
367 
368  for (i = 1; i < 128; i++)
369  quant_table[256 - i] = -quant_table[i];
370  quant_table[128] = -quant_table[127];
371 
372  return 2 * v - 1;
373 }
374 
376  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
377 {
378  int i;
379  int context_count = 1;
380 
381  for (i = 0; i < 5; i++) {
382  int ret = read_quant_table(c, quant_table[i], context_count);
383  if (ret < 0)
384  return ret;
385  context_count *= ret;
386  if (context_count > 32768U) {
387  return AVERROR_INVALIDDATA;
388  }
389  }
390  return (context_count + 1) / 2;
391 }
392 
394 {
395  RangeCoder *const c = &f->c;
397  int i, j, k, ret;
398  uint8_t state2[32][CONTEXT_SIZE];
399  unsigned crc = 0;
400 
401  memset(state2, 128, sizeof(state2));
402  memset(state, 128, sizeof(state));
403 
405  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
406 
407  f->version = get_symbol(c, state, 0);
408  if (f->version < 2) {
409  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
410  return AVERROR_INVALIDDATA;
411  }
412  if (f->version > 2) {
413  c->bytestream_end -= 4;
414  f->micro_version = get_symbol(c, state, 0);
415  if (f->micro_version < 0)
416  return AVERROR_INVALIDDATA;
417  }
418  f->ac = get_symbol(c, state, 0);
419 
420  if (f->ac == AC_RANGE_CUSTOM_TAB) {
421  for (i = 1; i < 256; i++)
422  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
423  }
424 
425  f->colorspace = get_symbol(c, state, 0); //YUV cs type
426  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
427  f->chroma_planes = get_rac(c, state);
428  f->chroma_h_shift = get_symbol(c, state, 0);
429  f->chroma_v_shift = get_symbol(c, state, 0);
430  f->transparency = get_rac(c, state);
431  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
432  f->num_h_slices = 1 + get_symbol(c, state, 0);
433  f->num_v_slices = 1 + get_symbol(c, state, 0);
434 
435  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
436  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
438  return AVERROR_INVALIDDATA;
439  }
440 
441  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
442  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
443  ) {
444  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
445  return AVERROR_INVALIDDATA;
446  }
447 
448  f->quant_table_count = get_symbol(c, state, 0);
449  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
450  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
451  f->quant_table_count = 0;
452  return AVERROR_INVALIDDATA;
453  }
454 
455  for (i = 0; i < f->quant_table_count; i++) {
456  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
457  if (f->context_count[i] < 0) {
458  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
459  return AVERROR_INVALIDDATA;
460  }
461  }
462  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
463  return ret;
464 
465  for (i = 0; i < f->quant_table_count; i++)
466  if (get_rac(c, state)) {
467  for (j = 0; j < f->context_count[i]; j++)
468  for (k = 0; k < CONTEXT_SIZE; k++) {
469  int pred = j ? f->initial_states[i][j - 1][k] : 128;
470  f->initial_states[i][j][k] =
471  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
472  }
473  }
474 
475  if (f->version > 2) {
476  f->ec = get_symbol(c, state, 0);
477  if (f->micro_version > 2)
478  f->intra = get_symbol(c, state, 0);
479  }
480 
481  if (f->version > 2) {
482  unsigned v;
485  if (v || f->avctx->extradata_size < 4) {
486  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
487  return AVERROR_INVALIDDATA;
488  }
489  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
490  }
491 
492  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
494  "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",
495  f->version, f->micro_version,
496  f->ac,
497  f->colorspace,
500  f->transparency,
501  f->num_h_slices, f->num_v_slices,
503  f->ec,
504  f->intra,
505  crc
506  );
507  return 0;
508 }
509 
510 static int read_header(FFV1Context *f)
511 {
513  int i, j, context_count = -1; //-1 to avoid warning
514  RangeCoder *const c = &f->slice_context[0]->c;
515 
516  memset(state, 128, sizeof(state));
517 
518  if (f->version < 2) {
520  unsigned v= get_symbol(c, state, 0);
521  if (v >= 2) {
522  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
523  return AVERROR_INVALIDDATA;
524  }
525  f->version = v;
526  f->ac = get_symbol(c, state, 0);
527 
528  if (f->ac == AC_RANGE_CUSTOM_TAB) {
529  for (i = 1; i < 256; i++)
530  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
531  }
532 
533  colorspace = get_symbol(c, state, 0); //YUV cs type
534  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
535  chroma_planes = get_rac(c, state);
536  chroma_h_shift = get_symbol(c, state, 0);
537  chroma_v_shift = get_symbol(c, state, 0);
538  transparency = get_rac(c, state);
539  if (colorspace == 0 && f->avctx->skip_alpha)
540  transparency = 0;
541 
542  if (f->plane_count) {
543  if (colorspace != f->colorspace ||
544  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
545  chroma_planes != f->chroma_planes ||
546  chroma_h_shift != f->chroma_h_shift ||
547  chroma_v_shift != f->chroma_v_shift ||
548  transparency != f->transparency) {
549  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
550  return AVERROR_INVALIDDATA;
551  }
552  }
553 
554  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
555  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
556  chroma_h_shift, chroma_v_shift);
557  return AVERROR_INVALIDDATA;
558  }
559 
560  f->colorspace = colorspace;
566 
567  f->plane_count = 2 + f->transparency;
568  }
569 
570  if (f->colorspace == 0) {
571  if (!f->transparency && !f->chroma_planes) {
572  if (f->avctx->bits_per_raw_sample <= 8)
574  else if (f->avctx->bits_per_raw_sample == 10) {
575  f->packed_at_lsb = 1;
577  } else if (f->avctx->bits_per_raw_sample == 12) {
578  f->packed_at_lsb = 1;
580  } else if (f->avctx->bits_per_raw_sample == 16) {
581  f->packed_at_lsb = 1;
583  } else if (f->avctx->bits_per_raw_sample < 16) {
585  } else
586  return AVERROR(ENOSYS);
587  } else if (f->transparency && !f->chroma_planes) {
588  if (f->avctx->bits_per_raw_sample <= 8)
590  else
591  return AVERROR(ENOSYS);
592  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
593  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
594  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
595  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
596  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
597  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
598  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
599  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
600  }
601  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
602  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
603  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
604  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
605  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
606  }
607  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
608  f->packed_at_lsb = 1;
609  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
610  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
611  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
612  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
613  }
614  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
615  f->packed_at_lsb = 1;
616  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
617  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
618  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
619  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
620  }
621  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
622  f->packed_at_lsb = 1;
623  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
624  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
625  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
626  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
627  }
628  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
629  f->packed_at_lsb = 1;
630  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
631  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
632  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
633  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
634  }
635  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
636  f->packed_at_lsb = 1;
637  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
638  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
639  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
640  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
641  }
642  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
643  f->packed_at_lsb = 1;
644  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
645  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
646  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
647  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
648  }
649  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
650  f->packed_at_lsb = 1;
651  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
652  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
653  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
654  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
655  }
656  }
657  } else if (f->colorspace == 1) {
658  if (f->chroma_h_shift || f->chroma_v_shift) {
660  "chroma subsampling not supported in this colorspace\n");
661  return AVERROR(ENOSYS);
662  }
663  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
665  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
667  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
669  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
671  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
673  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
675  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
677  f->use32bit = 1;
678  }
679  } else {
680  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
681  return AVERROR(ENOSYS);
682  }
683  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
684  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
685  return AVERROR(ENOSYS);
686  }
687 
688  ff_dlog(f->avctx, "%d %d %d\n",
690  if (f->version < 2) {
691  context_count = read_quant_tables(c, f->quant_table);
692  if (context_count < 0) {
693  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
694  return AVERROR_INVALIDDATA;
695  }
697  } else if (f->version < 3) {
698  f->slice_count = get_symbol(c, state, 0);
699  } else {
700  const uint8_t *p = c->bytestream_end;
701  for (f->slice_count = 0;
702  f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
703  f->slice_count++) {
704  int trailer = 3 + 5*!!f->ec;
705  int size = AV_RB24(p-trailer);
706  if (size + trailer > p - c->bytestream_start)
707  break;
708  p -= size + trailer;
709  }
710  }
711  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
712  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
713  return AVERROR_INVALIDDATA;
714  }
715 
716  for (j = 0; j < f->slice_count; j++) {
717  FFV1Context *fs = f->slice_context[j];
718  fs->ac = f->ac;
719  fs->packed_at_lsb = f->packed_at_lsb;
720 
721  fs->slice_damaged = 0;
722 
723  if (f->version == 2) {
724  fs->slice_x = get_symbol(c, state, 0) * f->width ;
725  fs->slice_y = get_symbol(c, state, 0) * f->height;
726  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
727  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
728 
729  fs->slice_x /= f->num_h_slices;
730  fs->slice_y /= f->num_v_slices;
731  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
732  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
733  if ((unsigned)fs->slice_width > f->width ||
734  (unsigned)fs->slice_height > f->height)
735  return AVERROR_INVALIDDATA;
736  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
737  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
738  return AVERROR_INVALIDDATA;
739  }
740 
741  for (i = 0; i < f->plane_count; i++) {
742  PlaneContext *const p = &fs->plane[i];
743 
744  if (f->version == 2) {
745  int idx = get_symbol(c, state, 0);
746  if (idx > (unsigned)f->quant_table_count) {
748  "quant_table_index out of range\n");
749  return AVERROR_INVALIDDATA;
750  }
751  p->quant_table_index = idx;
752  memcpy(p->quant_table, f->quant_tables[idx],
753  sizeof(p->quant_table));
754  context_count = f->context_count[idx];
755  } else {
756  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
757  }
758 
759  if (f->version <= 2) {
760  av_assert0(context_count >= 0);
761  if (p->context_count < context_count) {
762  av_freep(&p->state);
763  av_freep(&p->vlc_state);
764  }
766  }
767  }
768  }
769  return 0;
770 }
771 
773 {
774  FFV1Context *f = avctx->priv_data;
775  int ret;
776 
777  if ((ret = ff_ffv1_common_init(avctx)) < 0)
778  return ret;
779 
780  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
781  return ret;
782 
783  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
784  return ret;
785 
786  avctx->internal->allocate_progress = 1;
787 
788  return 0;
789 }
790 
791 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
792 {
793  uint8_t *buf = avpkt->data;
794  int buf_size = avpkt->size;
795  FFV1Context *f = avctx->priv_data;
796  RangeCoder *const c = &f->slice_context[0]->c;
797  int i, ret;
798  uint8_t keystate = 128;
799  uint8_t *buf_p;
800  AVFrame *p;
801 
802  if (f->last_picture.f)
805 
806  f->cur = p = f->picture.f;
807 
808  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
809  /* we have interlaced material flagged in container */
810  p->interlaced_frame = 1;
811  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
812  p->top_field_first = 1;
813  }
814 
815  f->avctx = avctx;
816  ff_init_range_decoder(c, buf, buf_size);
817  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
818 
819  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
820  if (get_rac(c, &keystate)) {
821  p->key_frame = 1;
822  f->key_frame_ok = 0;
823  if ((ret = read_header(f)) < 0)
824  return ret;
825  f->key_frame_ok = 1;
826  } else {
827  if (!f->key_frame_ok) {
828  av_log(avctx, AV_LOG_ERROR,
829  "Cannot decode non-keyframe without valid keyframe\n");
830  return AVERROR_INVALIDDATA;
831  }
832  p->key_frame = 0;
833  }
834 
835  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
836  return ret;
837 
838  if (avctx->debug & FF_DEBUG_PICT_INFO)
839  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
840  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
841 
842  ff_thread_finish_setup(avctx);
843 
844  buf_p = buf + buf_size;
845  for (i = f->slice_count - 1; i >= 0; i--) {
846  FFV1Context *fs = f->slice_context[i];
847  int trailer = 3 + 5*!!f->ec;
848  int v;
849 
850  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
851  else v = buf_p - c->bytestream_start;
852  if (buf_p - c->bytestream_start < v) {
853  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
854  ff_thread_report_progress(&f->picture, INT_MAX, 0);
855  return AVERROR_INVALIDDATA;
856  }
857  buf_p -= v;
858 
859  if (f->ec) {
860  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
861  if (crc) {
862  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
863  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
864  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
865  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
866  } else if (ts != AV_NOPTS_VALUE) {
867  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
868  } else {
869  av_log(f->avctx, AV_LOG_ERROR, "\n");
870  }
871  fs->slice_damaged = 1;
872  }
873  if (avctx->debug & FF_DEBUG_PICT_INFO) {
874  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
875  }
876  }
877 
878  if (i) {
879  ff_init_range_decoder(&fs->c, buf_p, v);
880  } else
881  fs->c.bytestream_end = buf_p + v;
882 
883  fs->avctx = avctx;
884  fs->cur = p;
885  }
886 
887  avctx->execute(avctx,
888  decode_slice,
889  &f->slice_context[0],
890  NULL,
891  f->slice_count,
892  sizeof(void*));
893 
894  for (i = f->slice_count - 1; i >= 0; i--) {
895  FFV1Context *fs = f->slice_context[i];
896  int j;
897  if (fs->slice_damaged && f->last_picture.f->data[0]) {
899  const uint8_t *src[4];
900  uint8_t *dst[4];
901  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
902  for (j = 0; j < desc->nb_components; j++) {
903  int pixshift = desc->comp[j].depth > 8;
904  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
905  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
906  dst[j] = p->data[j] + p->linesize[j] *
907  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
908  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
909  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
910 
911  }
912  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
914  dst[1] = p->data[1];
915  src[1] = f->last_picture.f->data[1];
916  }
917  av_image_copy(dst, p->linesize, src,
918  f->last_picture.f->linesize,
919  avctx->pix_fmt,
920  fs->slice_width,
921  fs->slice_height);
922  }
923  }
924  ff_thread_report_progress(&f->picture, INT_MAX, 0);
925 
926  f->picture_number++;
927 
928  if (f->last_picture.f)
930  f->cur = NULL;
931  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
932  return ret;
933 
934  *got_frame = 1;
935 
936  return buf_size;
937 }
938 
939 #if HAVE_THREADS
941 {
942  FFV1Context *f = avctx->priv_data;
943  int i, ret;
944 
945  f->picture.f = NULL;
946  f->last_picture.f = NULL;
947  f->sample_buffer = NULL;
948  f->max_slice_count = 0;
949  f->slice_count = 0;
950 
951  for (i = 0; i < f->quant_table_count; i++) {
952  av_assert0(f->version > 1);
954  f->context_count[i] * sizeof(*f->initial_states[i]));
955  }
956 
957  f->picture.f = av_frame_alloc();
959 
960  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
961  return ret;
962 
963  return 0;
964 }
965 #endif
966 
967 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
968 {
969  fsdst->version = fsrc->version;
970  fsdst->micro_version = fsrc->micro_version;
971  fsdst->chroma_planes = fsrc->chroma_planes;
972  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
973  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
974  fsdst->transparency = fsrc->transparency;
975  fsdst->plane_count = fsrc->plane_count;
976  fsdst->ac = fsrc->ac;
977  fsdst->colorspace = fsrc->colorspace;
978 
979  fsdst->ec = fsrc->ec;
980  fsdst->intra = fsrc->intra;
981  fsdst->slice_damaged = fssrc->slice_damaged;
982  fsdst->key_frame_ok = fsrc->key_frame_ok;
983 
985  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
986  fsdst->slice_count = fsrc->slice_count;
987  if (fsrc->version<3){
988  fsdst->slice_x = fssrc->slice_x;
989  fsdst->slice_y = fssrc->slice_y;
990  fsdst->slice_width = fssrc->slice_width;
991  fsdst->slice_height = fssrc->slice_height;
992  }
993 }
994 
995 #if HAVE_THREADS
996 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
997 {
998  FFV1Context *fsrc = src->priv_data;
999  FFV1Context *fdst = dst->priv_data;
1000  int i, ret;
1001 
1002  if (dst == src)
1003  return 0;
1004 
1005  {
1009  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1010  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1011 
1012  memcpy(fdst, fsrc, sizeof(*fdst));
1013  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1014  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1015  fdst->picture = picture;
1016  fdst->last_picture = last_picture;
1017  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1018  FFV1Context *fssrc = fsrc->slice_context[i];
1019  FFV1Context *fsdst = fdst->slice_context[i];
1020  copy_fields(fsdst, fssrc, fsrc);
1021  }
1022  av_assert0(!fdst->plane[0].state);
1023  av_assert0(!fdst->sample_buffer);
1024  }
1025 
1026  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1027 
1028 
1029  ff_thread_release_buffer(dst, &fdst->picture);
1030  if (fsrc->picture.f->data[0]) {
1031  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1032  return ret;
1033  }
1034 
1035  fdst->fsrc = fsrc;
1036 
1037  return 0;
1038 }
1039 #endif
1040 
1042  .name = "ffv1",
1043  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1044  .type = AVMEDIA_TYPE_VIDEO,
1045  .id = AV_CODEC_ID_FFV1,
1046  .priv_data_size = sizeof(FFV1Context),
1047  .init = decode_init,
1048  .close = ff_ffv1_close,
1049  .decode = decode_frame,
1051  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1052  .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1054  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP
1055 };
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
#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:400
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:394
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2337
This structure describes decoded (raw) audio or video data.
Definition: frame.h:194
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:396
8 bits gray, 8 bits alpha
Definition: pixfmt.h:154
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:397
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:228
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:1671
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:379
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:348
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:1973
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:367
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:791
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3146
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:3721
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
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:345
int plane_count
Definition: ffv1.h:100
int slice_damaged
Definition: ffv1.h:118
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:346
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:375
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:2987
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:392
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:1860
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:393
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:378
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:1670
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:2060
#define ff_dlog(a,...)
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:376
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:341
VlcState * vlc_state
Definition: ffv1.h:73
ptrdiff_t size
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:368
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:399
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:3456
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:149
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:3514
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
#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:401
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:3728
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:366
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:1063
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:71
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:218
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
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:361
#define av_flatten
Definition: attributes.h:88
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:66
uint8_t state_transition[256]
Definition: ffv1.h:107
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
Definition: ffv1dec.c:967
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:277
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:382
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:347
#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:106
#define AV_PIX_FMT_FLAG_PSEUDOPAL
The pixel format is "pseudo-paletted".
Definition: pixdesc.h:158
static float quant_table[96]
Definition: binkaudio.c:43
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:67
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:398
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:362
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:381
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:510
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:374
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1067
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:225
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:2986
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:1745
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:338
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:282
void * buf
Definition: avisynth_c.h:690
int extradata_size
Definition: avcodec.h:1861
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:363
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:360
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:142
static struct @258 state
int key_frame_ok
Definition: ffv1.h:119
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:380
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:364
int quant_table_index
Definition: ffv1.h:70
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:370
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:208
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:395
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:772
void * priv_data
Definition: avcodec.h:1787
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:3214
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:346
int len
int chroma_planes
Definition: ffv1.h:90
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1795
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:272
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:1669
#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:2504
#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:372
int num_v_slices
Definition: ffv1.h:131
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1647
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:393
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1395
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:1000
int slice_x
Definition: ffv1.h:135
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:375
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1663
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1041
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:342
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140