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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 
97 {
98  if (s->ac != AC_GOLOMB_RICE) {
99  RangeCoder *const c = &s->c;
100  if (c->overread > MAX_OVERREAD)
101  return AVERROR_INVALIDDATA;
102  } else {
103  if (get_bits_left(&s->gb) < 1)
104  return AVERROR_INVALIDDATA;
105  }
106  return 0;
107 }
108 
109 #define TYPE int16_t
110 #define RENAME(name) name
111 #include "ffv1dec_template.c"
112 #undef TYPE
113 #undef RENAME
114 
115 #define TYPE int32_t
116 #define RENAME(name) name ## 32
117 #include "ffv1dec_template.c"
118 
120  int w, int h, int stride, int plane_index,
121  int pixel_stride)
122 {
123  int x, y;
124  int16_t *sample[2];
125  sample[0] = s->sample_buffer + 3;
126  sample[1] = s->sample_buffer + w + 6 + 3;
127 
128  s->run_index = 0;
129 
130  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
131 
132  for (y = 0; y < h; y++) {
133  int16_t *temp = sample[0]; // FIXME: try a normal buffer
134 
135  sample[0] = sample[1];
136  sample[1] = temp;
137 
138  sample[1][-1] = sample[0][0];
139  sample[0][w] = sample[0][w - 1];
140 
141 // { START_TIMER
142  if (s->avctx->bits_per_raw_sample <= 8) {
143  int ret = decode_line(s, w, sample, plane_index, 8);
144  if (ret < 0)
145  return ret;
146  for (x = 0; x < w; x++)
147  src[x*pixel_stride + stride * y] = sample[1][x];
148  } else {
149  int ret = decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
150  if (ret < 0)
151  return ret;
152  if (s->packed_at_lsb) {
153  for (x = 0; x < w; x++) {
154  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x];
155  }
156  } else {
157  for (x = 0; x < w; x++) {
158  ((uint16_t*)(src + stride*y))[x*pixel_stride] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample) | ((uint16_t **)sample)[1][x] >> (2 * s->avctx->bits_per_raw_sample - 16);
159  }
160  }
161  }
162 // STOP_TIMER("decode-line") }
163  }
164  return 0;
165 }
166 
168 {
169  RangeCoder *c = &fs->c;
171  unsigned ps, i, context_count;
172  memset(state, 128, sizeof(state));
173 
174  av_assert0(f->version > 2);
175 
176  fs->slice_x = get_symbol(c, state, 0) * f->width ;
177  fs->slice_y = get_symbol(c, state, 0) * f->height;
178  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
179  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
180 
181  fs->slice_x /= f->num_h_slices;
182  fs->slice_y /= f->num_v_slices;
183  fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
184  fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
185  if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
186  return -1;
187  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
188  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
189  return -1;
190 
191  for (i = 0; i < f->plane_count; i++) {
192  PlaneContext * const p = &fs->plane[i];
193  int idx = get_symbol(c, state, 0);
194  if (idx >= (unsigned)f->quant_table_count) {
195  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
196  return -1;
197  }
198  p->quant_table_index = idx;
199  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
200  context_count = f->context_count[idx];
201 
202  if (p->context_count < context_count) {
203  av_freep(&p->state);
204  av_freep(&p->vlc_state);
205  }
207  }
208 
209  ps = get_symbol(c, state, 0);
210  if (ps == 1) {
211  f->cur->interlaced_frame = 1;
212  f->cur->top_field_first = 1;
213  } else if (ps == 2) {
214  f->cur->interlaced_frame = 1;
215  f->cur->top_field_first = 0;
216  } else if (ps == 3) {
217  f->cur->interlaced_frame = 0;
218  }
219  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
220  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
221 
222  if (av_image_check_sar(f->width, f->height,
223  f->cur->sample_aspect_ratio) < 0) {
224  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
227  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
228  }
229 
230  if (fs->version > 3) {
231  fs->slice_reset_contexts = get_rac(c, state);
232  fs->slice_coding_mode = get_symbol(c, state, 0);
233  if (fs->slice_coding_mode != 1) {
234  fs->slice_rct_by_coef = get_symbol(c, state, 0);
235  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
236  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
237  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
238  return AVERROR_INVALIDDATA;
239  }
240  }
241  }
242 
243  return 0;
244 }
245 
246 static int decode_slice(AVCodecContext *c, void *arg)
247 {
248  FFV1Context *fs = *(void **)arg;
249  FFV1Context *f = fs->avctx->priv_data;
250  int width, height, x, y, ret;
251  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step;
252  AVFrame * const p = f->cur;
253  int i, si;
254 
255  for( si=0; fs != f->slice_context[si]; si ++)
256  ;
257 
258  if(f->fsrc && !p->key_frame)
260 
261  if(f->fsrc && !p->key_frame) {
262  FFV1Context *fssrc = f->fsrc->slice_context[si];
263  FFV1Context *fsdst = f->slice_context[si];
264  av_assert1(fsdst->plane_count == fssrc->plane_count);
265  av_assert1(fsdst == fs);
266 
267  if (!p->key_frame)
268  fsdst->slice_damaged |= fssrc->slice_damaged;
269 
270  for (i = 0; i < f->plane_count; i++) {
271  PlaneContext *psrc = &fssrc->plane[i];
272  PlaneContext *pdst = &fsdst->plane[i];
273 
274  av_free(pdst->state);
275  av_free(pdst->vlc_state);
276  memcpy(pdst, psrc, sizeof(*pdst));
277  pdst->state = NULL;
278  pdst->vlc_state = NULL;
279 
280  if (fssrc->ac) {
282  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
283  } else {
284  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
285  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
286  }
287  }
288  }
289 
290  fs->slice_rct_by_coef = 1;
291  fs->slice_rct_ry_coef = 1;
292 
293  if (f->version > 2) {
294  if (ff_ffv1_init_slice_state(f, fs) < 0)
295  return AVERROR(ENOMEM);
296  if (decode_slice_header(f, fs) < 0) {
297  fs->slice_x = fs->slice_y = fs->slice_height = fs->slice_width = 0;
298  fs->slice_damaged = 1;
299  return AVERROR_INVALIDDATA;
300  }
301  }
302  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
303  return ret;
304  if (f->cur->key_frame || fs->slice_reset_contexts)
306 
307  width = fs->slice_width;
308  height = fs->slice_height;
309  x = fs->slice_x;
310  y = fs->slice_y;
311 
312  if (fs->ac == AC_GOLOMB_RICE) {
313  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
314  get_rac(&fs->c, (uint8_t[]) { 129 });
315  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
316  init_get_bits(&fs->gb,
317  fs->c.bytestream_start + fs->ac_byte_count,
318  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
319  }
320 
321  av_assert1(width && height);
322  if (f->colorspace == 0 && (f->chroma_planes || !fs->transparency)) {
323  const int chroma_width = AV_CEIL_RSHIFT(width, f->chroma_h_shift);
324  const int chroma_height = AV_CEIL_RSHIFT(height, f->chroma_v_shift);
325  const int cx = x >> f->chroma_h_shift;
326  const int cy = y >> f->chroma_v_shift;
327  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0, 1);
328 
329  if (f->chroma_planes) {
330  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1, 1);
331  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1, 1);
332  }
333  if (fs->transparency)
334  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);
335  } else if (f->colorspace == 0) {
336  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] , width, height, p->linesize[0], 0, 2);
337  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0] + 1, width, height, p->linesize[0], 1, 2);
338  } else if (f->use32bit) {
339  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
340  p->data[1] + ps * x + y * p->linesize[1],
341  p->data[2] + ps * x + y * p->linesize[2],
342  p->data[3] + ps * x + y * p->linesize[3] };
343  decode_rgb_frame32(fs, planes, width, height, p->linesize);
344  } else {
345  uint8_t *planes[4] = { p->data[0] + ps * x + y * p->linesize[0],
346  p->data[1] + ps * x + y * p->linesize[1],
347  p->data[2] + ps * x + y * p->linesize[2],
348  p->data[3] + ps * x + y * p->linesize[3] };
349  decode_rgb_frame(fs, planes, width, height, p->linesize);
350  }
351  if (fs->ac != AC_GOLOMB_RICE && f->version > 2) {
352  int v;
353  get_rac(&fs->c, (uint8_t[]) { 129 });
354  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
355  if (v) {
356  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
357  fs->slice_damaged = 1;
358  }
359  }
360 
361  emms_c();
362 
363  ff_thread_report_progress(&f->picture, si, 0);
364 
365  return 0;
366 }
367 
368 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
369 {
370  int v;
371  int i = 0;
373 
374  memset(state, 128, sizeof(state));
375 
376  for (v = 0; i < 128; v++) {
377  unsigned len = get_symbol(c, state, 0) + 1U;
378 
379  if (len > 128 - i || !len)
380  return AVERROR_INVALIDDATA;
381 
382  while (len--) {
383  quant_table[i] = scale * v;
384  i++;
385  }
386  }
387 
388  for (i = 1; i < 128; i++)
389  quant_table[256 - i] = -quant_table[i];
390  quant_table[128] = -quant_table[127];
391 
392  return 2 * v - 1;
393 }
394 
396  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
397 {
398  int i;
399  int context_count = 1;
400 
401  for (i = 0; i < 5; i++) {
402  int ret = read_quant_table(c, quant_table[i], context_count);
403  if (ret < 0)
404  return ret;
405  context_count *= ret;
406  if (context_count > 32768U) {
407  return AVERROR_INVALIDDATA;
408  }
409  }
410  return (context_count + 1) / 2;
411 }
412 
414 {
415  RangeCoder *const c = &f->c;
417  int i, j, k, ret;
418  uint8_t state2[32][CONTEXT_SIZE];
419  unsigned crc = 0;
420 
421  memset(state2, 128, sizeof(state2));
422  memset(state, 128, sizeof(state));
423 
425  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
426 
427  f->version = get_symbol(c, state, 0);
428  if (f->version < 2) {
429  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
430  return AVERROR_INVALIDDATA;
431  }
432  if (f->version > 2) {
433  c->bytestream_end -= 4;
434  f->micro_version = get_symbol(c, state, 0);
435  if (f->micro_version < 0)
436  return AVERROR_INVALIDDATA;
437  }
438  f->ac = get_symbol(c, state, 0);
439 
440  if (f->ac == AC_RANGE_CUSTOM_TAB) {
441  for (i = 1; i < 256; i++)
442  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
443  }
444 
445  f->colorspace = get_symbol(c, state, 0); //YUV cs type
446  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
447  f->chroma_planes = get_rac(c, state);
448  f->chroma_h_shift = get_symbol(c, state, 0);
449  f->chroma_v_shift = get_symbol(c, state, 0);
450  f->transparency = get_rac(c, state);
451  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
452  f->num_h_slices = 1 + get_symbol(c, state, 0);
453  f->num_v_slices = 1 + get_symbol(c, state, 0);
454 
455  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
456  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
458  return AVERROR_INVALIDDATA;
459  }
460 
461  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
462  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
463  ) {
464  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
465  return AVERROR_INVALIDDATA;
466  }
467 
468  f->quant_table_count = get_symbol(c, state, 0);
469  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) {
470  av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count);
471  f->quant_table_count = 0;
472  return AVERROR_INVALIDDATA;
473  }
474 
475  for (i = 0; i < f->quant_table_count; i++) {
476  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
477  if (f->context_count[i] < 0) {
478  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
479  return AVERROR_INVALIDDATA;
480  }
481  }
482  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
483  return ret;
484 
485  for (i = 0; i < f->quant_table_count; i++)
486  if (get_rac(c, state)) {
487  for (j = 0; j < f->context_count[i]; j++)
488  for (k = 0; k < CONTEXT_SIZE; k++) {
489  int pred = j ? f->initial_states[i][j - 1][k] : 128;
490  f->initial_states[i][j][k] =
491  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
492  }
493  }
494 
495  if (f->version > 2) {
496  f->ec = get_symbol(c, state, 0);
497  if (f->micro_version > 2)
498  f->intra = get_symbol(c, state, 0);
499  }
500 
501  if (f->version > 2) {
502  unsigned v;
505  if (v || f->avctx->extradata_size < 4) {
506  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
507  return AVERROR_INVALIDDATA;
508  }
509  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
510  }
511 
512  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
514  "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",
515  f->version, f->micro_version,
516  f->ac,
517  f->colorspace,
520  f->transparency,
521  f->num_h_slices, f->num_v_slices,
523  f->ec,
524  f->intra,
525  crc
526  );
527  return 0;
528 }
529 
530 static int read_header(FFV1Context *f)
531 {
533  int i, j, context_count = -1; //-1 to avoid warning
534  RangeCoder *const c = &f->slice_context[0]->c;
535 
536  memset(state, 128, sizeof(state));
537 
538  if (f->version < 2) {
540  unsigned v= get_symbol(c, state, 0);
541  if (v >= 2) {
542  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
543  return AVERROR_INVALIDDATA;
544  }
545  f->version = v;
546  f->ac = get_symbol(c, state, 0);
547 
548  if (f->ac == AC_RANGE_CUSTOM_TAB) {
549  for (i = 1; i < 256; i++)
550  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
551  }
552 
553  colorspace = get_symbol(c, state, 0); //YUV cs type
554  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
555  chroma_planes = get_rac(c, state);
556  chroma_h_shift = get_symbol(c, state, 0);
557  chroma_v_shift = get_symbol(c, state, 0);
558  transparency = get_rac(c, state);
559  if (colorspace == 0 && f->avctx->skip_alpha)
560  transparency = 0;
561 
562  if (f->plane_count) {
563  if (colorspace != f->colorspace ||
564  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
565  chroma_planes != f->chroma_planes ||
566  chroma_h_shift != f->chroma_h_shift ||
567  chroma_v_shift != f->chroma_v_shift ||
568  transparency != f->transparency) {
569  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
570  return AVERROR_INVALIDDATA;
571  }
572  }
573 
574  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
575  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
576  chroma_h_shift, chroma_v_shift);
577  return AVERROR_INVALIDDATA;
578  }
579 
580  f->colorspace = colorspace;
586 
587  f->plane_count = 2 + f->transparency;
588  }
589 
590  if (f->colorspace == 0) {
591  if (!f->transparency && !f->chroma_planes) {
592  if (f->avctx->bits_per_raw_sample <= 8)
594  else if (f->avctx->bits_per_raw_sample == 10) {
595  f->packed_at_lsb = 1;
597  } else if (f->avctx->bits_per_raw_sample == 12) {
598  f->packed_at_lsb = 1;
600  } else if (f->avctx->bits_per_raw_sample == 16) {
601  f->packed_at_lsb = 1;
603  } else if (f->avctx->bits_per_raw_sample < 16) {
605  } else
606  return AVERROR(ENOSYS);
607  } else if (f->transparency && !f->chroma_planes) {
608  if (f->avctx->bits_per_raw_sample <= 8)
610  else
611  return AVERROR(ENOSYS);
612  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
613  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
614  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
615  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
616  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
617  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
618  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
619  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
620  }
621  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
622  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
623  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
624  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
625  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
626  }
627  } else if (f->avctx->bits_per_raw_sample == 9 && !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_YUV444P9; break;
631  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
632  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
633  }
634  } else if (f->avctx->bits_per_raw_sample == 9 && 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_YUVA444P9; break;
638  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
639  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
640  }
641  } else if (f->avctx->bits_per_raw_sample == 10 && !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_YUV444P10; break;
645  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
646  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
647  }
648  } else if (f->avctx->bits_per_raw_sample == 10 && 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_YUVA444P10; break;
652  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
653  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
654  }
655  } else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency) {
656  f->packed_at_lsb = 1;
657  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
658  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P12; break;
659  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P12; break;
660  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P12; break;
661  }
662  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
663  f->packed_at_lsb = 1;
664  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
665  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
666  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
667  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
668  }
669  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
670  f->packed_at_lsb = 1;
671  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
672  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
673  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
674  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
675  }
676  }
677  } else if (f->colorspace == 1) {
678  if (f->chroma_h_shift || f->chroma_v_shift) {
680  "chroma subsampling not supported in this colorspace\n");
681  return AVERROR(ENOSYS);
682  }
683  if ( f->avctx->bits_per_raw_sample <= 8 && !f->transparency)
685  else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency)
687  else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency)
689  else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency)
691  else if (f->avctx->bits_per_raw_sample == 10 && f->transparency)
693  else if (f->avctx->bits_per_raw_sample == 12 && !f->transparency)
695  else if (f->avctx->bits_per_raw_sample == 12 && f->transparency)
697  else if (f->avctx->bits_per_raw_sample == 14 && !f->transparency)
699  else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency) {
701  f->use32bit = 1;
702  }
703  else if (f->avctx->bits_per_raw_sample == 16 && f->transparency) {
705  f->use32bit = 1;
706  }
707  } else {
708  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
709  return AVERROR(ENOSYS);
710  }
711  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
712  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
713  return AVERROR(ENOSYS);
714  }
715 
716  ff_dlog(f->avctx, "%d %d %d\n",
718  if (f->version < 2) {
719  context_count = read_quant_tables(c, f->quant_table);
720  if (context_count < 0) {
721  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
722  return AVERROR_INVALIDDATA;
723  }
725  } else if (f->version < 3) {
726  f->slice_count = get_symbol(c, state, 0);
727  } else {
728  const uint8_t *p = c->bytestream_end;
729  for (f->slice_count = 0;
730  f->slice_count < MAX_SLICES && 3 + 5*!!f->ec < p - c->bytestream_start;
731  f->slice_count++) {
732  int trailer = 3 + 5*!!f->ec;
733  int size = AV_RB24(p-trailer);
734  if (size + trailer > p - c->bytestream_start)
735  break;
736  p -= size + trailer;
737  }
738  }
739  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0 || f->slice_count > f->max_slice_count) {
740  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid (max=%d)\n", f->slice_count, f->max_slice_count);
741  return AVERROR_INVALIDDATA;
742  }
743 
744  for (j = 0; j < f->slice_count; j++) {
745  FFV1Context *fs = f->slice_context[j];
746  fs->ac = f->ac;
747  fs->packed_at_lsb = f->packed_at_lsb;
748 
749  fs->slice_damaged = 0;
750 
751  if (f->version == 2) {
752  fs->slice_x = get_symbol(c, state, 0) * f->width ;
753  fs->slice_y = get_symbol(c, state, 0) * f->height;
754  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
755  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
756 
757  fs->slice_x /= f->num_h_slices;
758  fs->slice_y /= f->num_v_slices;
759  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
760  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
761  if ((unsigned)fs->slice_width > f->width ||
762  (unsigned)fs->slice_height > f->height)
763  return AVERROR_INVALIDDATA;
764  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
765  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
766  return AVERROR_INVALIDDATA;
767  }
768 
769  for (i = 0; i < f->plane_count; i++) {
770  PlaneContext *const p = &fs->plane[i];
771 
772  if (f->version == 2) {
773  int idx = get_symbol(c, state, 0);
774  if (idx > (unsigned)f->quant_table_count) {
776  "quant_table_index out of range\n");
777  return AVERROR_INVALIDDATA;
778  }
779  p->quant_table_index = idx;
780  memcpy(p->quant_table, f->quant_tables[idx],
781  sizeof(p->quant_table));
782  context_count = f->context_count[idx];
783  } else {
784  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
785  }
786 
787  if (f->version <= 2) {
788  av_assert0(context_count >= 0);
789  if (p->context_count < context_count) {
790  av_freep(&p->state);
791  av_freep(&p->vlc_state);
792  }
794  }
795  }
796  }
797  return 0;
798 }
799 
801 {
802  FFV1Context *f = avctx->priv_data;
803  int ret;
804 
805  if ((ret = ff_ffv1_common_init(avctx)) < 0)
806  return ret;
807 
808  if (avctx->extradata_size > 0 && (ret = read_extra_header(f)) < 0)
809  return ret;
810 
811  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
812  return ret;
813 
814  avctx->internal->allocate_progress = 1;
815 
816  return 0;
817 }
818 
819 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
820 {
821  uint8_t *buf = avpkt->data;
822  int buf_size = avpkt->size;
823  FFV1Context *f = avctx->priv_data;
824  RangeCoder *const c = &f->slice_context[0]->c;
825  int i, ret;
826  uint8_t keystate = 128;
827  uint8_t *buf_p;
828  AVFrame *p;
829 
830  if (f->last_picture.f)
833 
834  f->cur = p = f->picture.f;
835 
836  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
837  /* we have interlaced material flagged in container */
838  p->interlaced_frame = 1;
839  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
840  p->top_field_first = 1;
841  }
842 
843  f->avctx = avctx;
844  ff_init_range_decoder(c, buf, buf_size);
845  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
846 
847  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
848  if (get_rac(c, &keystate)) {
849  p->key_frame = 1;
850  f->key_frame_ok = 0;
851  if ((ret = read_header(f)) < 0)
852  return ret;
853  f->key_frame_ok = 1;
854  } else {
855  if (!f->key_frame_ok) {
856  av_log(avctx, AV_LOG_ERROR,
857  "Cannot decode non-keyframe without valid keyframe\n");
858  return AVERROR_INVALIDDATA;
859  }
860  p->key_frame = 0;
861  }
862 
863  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
864  return ret;
865 
866  if (avctx->debug & FF_DEBUG_PICT_INFO)
867  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
868  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
869 
870  ff_thread_finish_setup(avctx);
871 
872  buf_p = buf + buf_size;
873  for (i = f->slice_count - 1; i >= 0; i--) {
874  FFV1Context *fs = f->slice_context[i];
875  int trailer = 3 + 5*!!f->ec;
876  int v;
877 
878  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
879  else v = buf_p - c->bytestream_start;
880  if (buf_p - c->bytestream_start < v) {
881  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
882  ff_thread_report_progress(&f->picture, INT_MAX, 0);
883  return AVERROR_INVALIDDATA;
884  }
885  buf_p -= v;
886 
887  if (f->ec) {
888  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
889  if (crc) {
890  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
891  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
892  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
893  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
894  } else if (ts != AV_NOPTS_VALUE) {
895  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
896  } else {
897  av_log(f->avctx, AV_LOG_ERROR, "\n");
898  }
899  fs->slice_damaged = 1;
900  }
901  if (avctx->debug & FF_DEBUG_PICT_INFO) {
902  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08"PRIX32"\n", i, AV_RB32(buf_p + v - 4));
903  }
904  }
905 
906  if (i) {
907  ff_init_range_decoder(&fs->c, buf_p, v);
908  } else
909  fs->c.bytestream_end = buf_p + v;
910 
911  fs->avctx = avctx;
912  fs->cur = p;
913  }
914 
915  avctx->execute(avctx,
916  decode_slice,
917  &f->slice_context[0],
918  NULL,
919  f->slice_count,
920  sizeof(void*));
921 
922  for (i = f->slice_count - 1; i >= 0; i--) {
923  FFV1Context *fs = f->slice_context[i];
924  int j;
925  if (fs->slice_damaged && f->last_picture.f->data[0]) {
927  const uint8_t *src[4];
928  uint8_t *dst[4];
929  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
930  for (j = 0; j < desc->nb_components; j++) {
931  int pixshift = desc->comp[j].depth > 8;
932  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
933  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
934  dst[j] = p->data[j] + p->linesize[j] *
935  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
936  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
937  (fs->slice_y >> sv) + ((fs->slice_x >> sh) << pixshift);
938 
939  }
940  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
942  dst[1] = p->data[1];
943  src[1] = f->last_picture.f->data[1];
944  }
945  av_image_copy(dst, p->linesize, src,
946  f->last_picture.f->linesize,
947  avctx->pix_fmt,
948  fs->slice_width,
949  fs->slice_height);
950  }
951  }
952  ff_thread_report_progress(&f->picture, INT_MAX, 0);
953 
954  f->picture_number++;
955 
956  if (f->last_picture.f)
958  f->cur = NULL;
959  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
960  return ret;
961 
962  *got_frame = 1;
963 
964  return buf_size;
965 }
966 
967 #if HAVE_THREADS
969 {
970  FFV1Context *f = avctx->priv_data;
971  int i, ret;
972 
973  f->picture.f = NULL;
974  f->last_picture.f = NULL;
975  f->sample_buffer = NULL;
976  f->max_slice_count = 0;
977  f->slice_count = 0;
978 
979  for (i = 0; i < f->quant_table_count; i++) {
980  av_assert0(f->version > 1);
982  f->context_count[i] * sizeof(*f->initial_states[i]));
983  }
984 
985  f->picture.f = av_frame_alloc();
987 
988  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
989  return ret;
990 
991  return 0;
992 }
993 #endif
994 
995 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
996 {
997  fsdst->version = fsrc->version;
998  fsdst->micro_version = fsrc->micro_version;
999  fsdst->chroma_planes = fsrc->chroma_planes;
1000  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1001  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1002  fsdst->transparency = fsrc->transparency;
1003  fsdst->plane_count = fsrc->plane_count;
1004  fsdst->ac = fsrc->ac;
1005  fsdst->colorspace = fsrc->colorspace;
1006 
1007  fsdst->ec = fsrc->ec;
1008  fsdst->intra = fsrc->intra;
1009  fsdst->slice_damaged = fssrc->slice_damaged;
1010  fsdst->key_frame_ok = fsrc->key_frame_ok;
1011 
1013  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1014  fsdst->slice_count = fsrc->slice_count;
1015  if (fsrc->version<3){
1016  fsdst->slice_x = fssrc->slice_x;
1017  fsdst->slice_y = fssrc->slice_y;
1018  fsdst->slice_width = fssrc->slice_width;
1019  fsdst->slice_height = fssrc->slice_height;
1020  }
1021 }
1022 
1023 #if HAVE_THREADS
1024 static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1025 {
1026  FFV1Context *fsrc = src->priv_data;
1027  FFV1Context *fdst = dst->priv_data;
1028  int i, ret;
1029 
1030  if (dst == src)
1031  return 0;
1032 
1033  {
1037  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1038  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1039 
1040  memcpy(fdst, fsrc, sizeof(*fdst));
1041  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1042  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1043  fdst->picture = picture;
1044  fdst->last_picture = last_picture;
1045  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1046  FFV1Context *fssrc = fsrc->slice_context[i];
1047  FFV1Context *fsdst = fdst->slice_context[i];
1048  copy_fields(fsdst, fssrc, fsrc);
1049  }
1050  av_assert0(!fdst->plane[0].state);
1051  av_assert0(!fdst->sample_buffer);
1052  }
1053 
1054  av_assert1(fdst->max_slice_count == fsrc->max_slice_count);
1055 
1056 
1057  ff_thread_release_buffer(dst, &fdst->picture);
1058  if (fsrc->picture.f->data[0]) {
1059  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1060  return ret;
1061  }
1062 
1063  fdst->fsrc = fsrc;
1064 
1065  return 0;
1066 }
1067 #endif
1068 
1070  .name = "ffv1",
1071  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1072  .type = AVMEDIA_TYPE_VIDEO,
1073  .id = AV_CODEC_ID_FFV1,
1074  .priv_data_size = sizeof(FFV1Context),
1075  .init = decode_init,
1076  .close = ff_ffv1_close,
1077  .decode = decode_frame,
1079  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1080  .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1082  .caps_internal = FF_CODEC_CAP_INIT_CLEANUP
1083 };
#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:407
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:401
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2363
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:403
8 bits gray, 8 bits alpha
Definition: pixfmt.h:139
#define AV_PIX_FMT_GBRAP10
Definition: pixfmt.h:388
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:404
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:35
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:256
const char * desc
Definition: nvenc.c:63
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:246
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:1416
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:384
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:368
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:1712
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:372
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:819
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2726
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:3380
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:350
int plane_count
Definition: ffv1.h:100
int slice_damaged
Definition: ffv1.h:118
static int is_input_end(FFV1Context *s)
Definition: ffv1dec.c:96
#define AV_PIX_FMT_GRAY12
Definition: pixfmt.h:351
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:97
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:395
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:119
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:2584
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:400
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:1603
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:400
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:383
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:287
#define height
uint8_t * data
Definition: avcodec.h:1415
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:1781
#define ff_dlog(a,...)
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:381
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:348
VlcState * vlc_state
Definition: ffv1.h:73
ptrdiff_t size
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:373
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:406
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:3027
static int get_bits_left(GetBitContext *gb)
Definition: get_bits.h:588
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:172
#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:167
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:3085
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static const struct @281 planes[]
#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:408
const char * arg
Definition: jacosubdec.c:66
uint16_t width
Definition: gdv.c:47
#define AV_PIX_FMT_GBRAP12
Definition: pixfmt.h:389
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3387
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:371
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:283
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1013
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:386
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:390
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:225
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:366
#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:995
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:284
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:387
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:352
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
static int decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index, int pixel_stride)
Definition: ffv1dec.c:119
#define FFMIN(a, b)
Definition: common.h:96
int num_h_slices
Definition: ffv1.h:132
uint8_t w
Definition: llviddspenc.c:38
#define MAX_QUANT_TABLES
Definition: ffv1.h:53
int colorspace
Definition: ffv1.h:110
#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:366
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:68
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:405
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:367
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:386
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:530
static const float pred[4]
Definition: siprdata.h:259
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:379
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1017
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:232
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:173
int debug
debug
Definition: avcodec.h:2583
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:1503
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:342
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:289
void * buf
Definition: avisynth_c.h:690
int extradata_size
Definition: avcodec.h:1604
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:368
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
#define MAX_OVERREAD
Definition: lagarithrac.h:51
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:365
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:151
int key_frame_ok
Definition: ffv1.h:119
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:385
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:369
int quant_table_index
Definition: ffv1.h:70
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:375
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:349
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:279
int overread
Definition: rangecoder.h:45
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:402
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:800
void * priv_data
Definition: avcodec.h:1530
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:2794
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:353
int len
int chroma_planes
Definition: ffv1.h:90
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1538
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:279
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:1414
#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:95
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2155
#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:1392
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:413
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1133
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:957
int slice_x
Definition: ffv1.h:135
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:380
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1408
static struct @280 state
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1069
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:346
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
int slice_rct_ry_coef
Definition: ffv1.h:140