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ffv1dec.c
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1 /*
2  * FFV1 decoder
3  *
4  * Copyright (c) 2003-2013 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * FF Video Codec 1 (a lossless codec) decoder
26  */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/timer.h"
34 #include "avcodec.h"
35 #include "internal.h"
36 #include "get_bits.h"
37 #include "rangecoder.h"
38 #include "golomb.h"
39 #include "mathops.h"
40 #include "ffv1.h"
41 
43  int is_signed)
44 {
45  if (get_rac(c, state + 0))
46  return 0;
47  else {
48  int i, e, a;
49  e = 0;
50  while (get_rac(c, state + 1 + FFMIN(e, 9))) // 1..10
51  e++;
52 
53  a = 1;
54  for (i = e - 1; i >= 0; i--)
55  a += a + get_rac(c, state + 22 + FFMIN(i, 9)); // 22..31
56 
57  e = -(is_signed && get_rac(c, state + 11 + FFMIN(e, 10))); // 11..21
58  return (a ^ e) - e;
59  }
60 }
61 
62 static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
63 {
64  return get_symbol_inline(c, state, is_signed);
65 }
66 
67 static inline int get_vlc_symbol(GetBitContext *gb, VlcState *const state,
68  int bits)
69 {
70  int k, i, v, ret;
71 
72  i = state->count;
73  k = 0;
74  while (i < state->error_sum) { // FIXME: optimize
75  k++;
76  i += i;
77  }
78 
79  v = get_sr_golomb(gb, k, 12, bits);
80  ff_dlog(NULL, "v:%d bias:%d error:%d drift:%d count:%d k:%d",
81  v, state->bias, state->error_sum, state->drift, state->count, k);
82 
83 #if 0 // JPEG LS
84  if (k == 0 && 2 * state->drift <= -state->count)
85  v ^= (-1);
86 #else
87  v ^= ((2 * state->drift + state->count) >> 31);
88 #endif
89 
90  ret = fold(v + state->bias, bits);
91 
92  update_vlc_state(state, v);
93 
94  return ret;
95 }
96 
98  int16_t *sample[2],
99  int plane_index, int bits)
100 {
101  PlaneContext *const p = &s->plane[plane_index];
102  RangeCoder *const c = &s->c;
103  int x;
104  int run_count = 0;
105  int run_mode = 0;
106  int run_index = s->run_index;
107 
108  if (s->slice_coding_mode == 1) {
109  int i;
110  for (x = 0; x < w; x++) {
111  int v = 0;
112  for (i=0; i<bits; i++) {
113  uint8_t state = 128;
114  v += v + get_rac(c, &state);
115  }
116  sample[1][x] = v;
117  }
118  return;
119  }
120 
121  for (x = 0; x < w; x++) {
122  int diff, context, sign;
123 
124  context = get_context(p, sample[1] + x, sample[0] + x, sample[1] + x);
125  if (context < 0) {
126  context = -context;
127  sign = 1;
128  } else
129  sign = 0;
130 
131  av_assert2(context < p->context_count);
132 
133  if (s->ac) {
134  diff = get_symbol_inline(c, p->state[context], 1);
135  } else {
136  if (context == 0 && run_mode == 0)
137  run_mode = 1;
138 
139  if (run_mode) {
140  if (run_count == 0 && run_mode == 1) {
141  if (get_bits1(&s->gb)) {
142  run_count = 1 << ff_log2_run[run_index];
143  if (x + run_count <= w)
144  run_index++;
145  } else {
146  if (ff_log2_run[run_index])
147  run_count = get_bits(&s->gb, ff_log2_run[run_index]);
148  else
149  run_count = 0;
150  if (run_index)
151  run_index--;
152  run_mode = 2;
153  }
154  }
155  run_count--;
156  if (run_count < 0) {
157  run_mode = 0;
158  run_count = 0;
159  diff = get_vlc_symbol(&s->gb, &p->vlc_state[context],
160  bits);
161  if (diff >= 0)
162  diff++;
163  } else
164  diff = 0;
165  } else
166  diff = get_vlc_symbol(&s->gb, &p->vlc_state[context], bits);
167 
168  ff_dlog(s->avctx, "count:%d index:%d, mode:%d, x:%d pos:%d\n",
169  run_count, run_index, run_mode, x, get_bits_count(&s->gb));
170  }
171 
172  if (sign)
173  diff = -diff;
174 
175  sample[1][x] = av_mod_uintp2(predict(sample[1] + x, sample[0] + x) + diff, bits);
176  }
177  s->run_index = run_index;
178 }
179 
181  int w, int h, int stride, int plane_index)
182 {
183  int x, y;
184  int16_t *sample[2];
185  sample[0] = s->sample_buffer + 3;
186  sample[1] = s->sample_buffer + w + 6 + 3;
187 
188  s->run_index = 0;
189 
190  memset(s->sample_buffer, 0, 2 * (w + 6) * sizeof(*s->sample_buffer));
191 
192  for (y = 0; y < h; y++) {
193  int16_t *temp = sample[0]; // FIXME: try a normal buffer
194 
195  sample[0] = sample[1];
196  sample[1] = temp;
197 
198  sample[1][-1] = sample[0][0];
199  sample[0][w] = sample[0][w - 1];
200 
201 // { START_TIMER
202  if (s->avctx->bits_per_raw_sample <= 8) {
203  decode_line(s, w, sample, plane_index, 8);
204  for (x = 0; x < w; x++)
205  src[x + stride * y] = sample[1][x];
206  } else {
207  decode_line(s, w, sample, plane_index, s->avctx->bits_per_raw_sample);
208  if (s->packed_at_lsb) {
209  for (x = 0; x < w; x++) {
210  ((uint16_t*)(src + stride*y))[x] = sample[1][x];
211  }
212  } else {
213  for (x = 0; x < w; x++) {
214  ((uint16_t*)(src + stride*y))[x] = sample[1][x] << (16 - s->avctx->bits_per_raw_sample);
215  }
216  }
217  }
218 // STOP_TIMER("decode-line") }
219  }
220 }
221 
222 static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
223 {
224  int x, y, p;
225  int16_t *sample[4][2];
226  int lbd = s->avctx->bits_per_raw_sample <= 8;
227  int bits = s->avctx->bits_per_raw_sample > 0 ? s->avctx->bits_per_raw_sample : 8;
228  int offset = 1 << bits;
229 
230  for (x = 0; x < 4; x++) {
231  sample[x][0] = s->sample_buffer + x * 2 * (w + 6) + 3;
232  sample[x][1] = s->sample_buffer + (x * 2 + 1) * (w + 6) + 3;
233  }
234 
235  s->run_index = 0;
236 
237  memset(s->sample_buffer, 0, 8 * (w + 6) * sizeof(*s->sample_buffer));
238 
239  for (y = 0; y < h; y++) {
240  for (p = 0; p < 3 + s->transparency; p++) {
241  int16_t *temp = sample[p][0]; // FIXME: try a normal buffer
242 
243  sample[p][0] = sample[p][1];
244  sample[p][1] = temp;
245 
246  sample[p][1][-1]= sample[p][0][0 ];
247  sample[p][0][ w]= sample[p][0][w-1];
248  if (lbd && s->slice_coding_mode == 0)
249  decode_line(s, w, sample[p], (p + 1)/2, 9);
250  else
251  decode_line(s, w, sample[p], (p + 1)/2, bits + (s->slice_coding_mode != 1));
252  }
253  for (x = 0; x < w; x++) {
254  int g = sample[0][1][x];
255  int b = sample[1][1][x];
256  int r = sample[2][1][x];
257  int a = sample[3][1][x];
258 
259  if (s->slice_coding_mode != 1) {
260  b -= offset;
261  r -= offset;
262  g -= (b * s->slice_rct_by_coef + r * s->slice_rct_ry_coef) >> 2;
263  b += g;
264  r += g;
265  }
266 
267  if (lbd)
268  *((uint32_t*)(src[0] + x*4 + stride[0]*y)) = b + (g<<8) + (r<<16) + (a<<24);
269  else {
270  *((uint16_t*)(src[0] + x*2 + stride[0]*y)) = b;
271  *((uint16_t*)(src[1] + x*2 + stride[1]*y)) = g;
272  *((uint16_t*)(src[2] + x*2 + stride[2]*y)) = r;
273  }
274  }
275  }
276 }
277 
279 {
280  RangeCoder *c = &fs->c;
282  unsigned ps, i, context_count;
283  memset(state, 128, sizeof(state));
284 
285  av_assert0(f->version > 2);
286 
287  fs->slice_x = get_symbol(c, state, 0) * f->width ;
288  fs->slice_y = get_symbol(c, state, 0) * f->height;
289  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
290  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
291 
292  fs->slice_x /= f->num_h_slices;
293  fs->slice_y /= f->num_v_slices;
294  fs->slice_width = fs->slice_width /f->num_h_slices - fs->slice_x;
295  fs->slice_height = fs->slice_height/f->num_v_slices - fs->slice_y;
296  if ((unsigned)fs->slice_width > f->width || (unsigned)fs->slice_height > f->height)
297  return -1;
298  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
299  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
300  return -1;
301 
302  for (i = 0; i < f->plane_count; i++) {
303  PlaneContext * const p = &fs->plane[i];
304  int idx = get_symbol(c, state, 0);
305  if (idx > (unsigned)f->quant_table_count) {
306  av_log(f->avctx, AV_LOG_ERROR, "quant_table_index out of range\n");
307  return -1;
308  }
309  p->quant_table_index = idx;
310  memcpy(p->quant_table, f->quant_tables[idx], sizeof(p->quant_table));
311  context_count = f->context_count[idx];
312 
313  if (p->context_count < context_count) {
314  av_freep(&p->state);
315  av_freep(&p->vlc_state);
316  }
318  }
319 
320  ps = get_symbol(c, state, 0);
321  if (ps == 1) {
322  f->cur->interlaced_frame = 1;
323  f->cur->top_field_first = 1;
324  } else if (ps == 2) {
325  f->cur->interlaced_frame = 1;
326  f->cur->top_field_first = 0;
327  } else if (ps == 3) {
328  f->cur->interlaced_frame = 0;
329  }
330  f->cur->sample_aspect_ratio.num = get_symbol(c, state, 0);
331  f->cur->sample_aspect_ratio.den = get_symbol(c, state, 0);
332 
333  if (av_image_check_sar(f->width, f->height,
334  f->cur->sample_aspect_ratio) < 0) {
335  av_log(f->avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
338  f->cur->sample_aspect_ratio = (AVRational){ 0, 1 };
339  }
340 
341  if (fs->version > 3) {
342  fs->slice_reset_contexts = get_rac(c, state);
343  fs->slice_coding_mode = get_symbol(c, state, 0);
344  if (fs->slice_coding_mode != 1) {
345  fs->slice_rct_by_coef = get_symbol(c, state, 0);
346  fs->slice_rct_ry_coef = get_symbol(c, state, 0);
347  if ((uint64_t)fs->slice_rct_by_coef + (uint64_t)fs->slice_rct_ry_coef > 4) {
348  av_log(f->avctx, AV_LOG_ERROR, "slice_rct_y_coef out of range\n");
349  return AVERROR_INVALIDDATA;
350  }
351  }
352  }
353 
354  return 0;
355 }
356 
357 static int decode_slice(AVCodecContext *c, void *arg)
358 {
359  FFV1Context *fs = *(void **)arg;
360  FFV1Context *f = fs->avctx->priv_data;
361  int width, height, x, y, ret;
362  const int ps = av_pix_fmt_desc_get(c->pix_fmt)->comp[0].step_minus1 + 1;
363  AVFrame * const p = f->cur;
364  int i, si;
365 
366  for( si=0; fs != f->slice_context[si]; si ++)
367  ;
368 
369  if(f->fsrc && !p->key_frame)
371 
372  if(f->fsrc && !p->key_frame) {
373  FFV1Context *fssrc = f->fsrc->slice_context[si];
374  FFV1Context *fsdst = f->slice_context[si];
375  av_assert1(fsdst->plane_count == fssrc->plane_count);
376  av_assert1(fsdst == fs);
377 
378  if (!p->key_frame)
379  fsdst->slice_damaged |= fssrc->slice_damaged;
380 
381  for (i = 0; i < f->plane_count; i++) {
382  PlaneContext *psrc = &fssrc->plane[i];
383  PlaneContext *pdst = &fsdst->plane[i];
384 
385  av_free(pdst->state);
386  av_free(pdst->vlc_state);
387  memcpy(pdst, psrc, sizeof(*pdst));
388  pdst->state = NULL;
389  pdst->vlc_state = NULL;
390 
391  if (fssrc->ac) {
393  memcpy(pdst->state, psrc->state, CONTEXT_SIZE * psrc->context_count);
394  } else {
395  pdst->vlc_state = av_malloc_array(sizeof(*pdst->vlc_state), psrc->context_count);
396  memcpy(pdst->vlc_state, psrc->vlc_state, sizeof(*pdst->vlc_state) * psrc->context_count);
397  }
398  }
399  }
400 
401  fs->slice_rct_by_coef = 1;
402  fs->slice_rct_ry_coef = 1;
403 
404  if (f->version > 2) {
405  if (ff_ffv1_init_slice_state(f, fs) < 0)
406  return AVERROR(ENOMEM);
407  if (decode_slice_header(f, fs) < 0) {
408  fs->slice_damaged = 1;
409  return AVERROR_INVALIDDATA;
410  }
411  }
412  if ((ret = ff_ffv1_init_slice_state(f, fs)) < 0)
413  return ret;
414  if (f->cur->key_frame || fs->slice_reset_contexts)
416 
417  width = fs->slice_width;
418  height = fs->slice_height;
419  x = fs->slice_x;
420  y = fs->slice_y;
421 
422  if (!fs->ac) {
423  if (f->version == 3 && f->micro_version > 1 || f->version > 3)
424  get_rac(&fs->c, (uint8_t[]) { 129 });
425  fs->ac_byte_count = f->version > 2 || (!x && !y) ? fs->c.bytestream - fs->c.bytestream_start - 1 : 0;
426  init_get_bits(&fs->gb,
427  fs->c.bytestream_start + fs->ac_byte_count,
428  (fs->c.bytestream_end - fs->c.bytestream_start - fs->ac_byte_count) * 8);
429  }
430 
431  av_assert1(width && height);
432  if (f->colorspace == 0) {
433  const int chroma_width = FF_CEIL_RSHIFT(width, f->chroma_h_shift);
434  const int chroma_height = FF_CEIL_RSHIFT(height, f->chroma_v_shift);
435  const int cx = x >> f->chroma_h_shift;
436  const int cy = y >> f->chroma_v_shift;
437  decode_plane(fs, p->data[0] + ps*x + y*p->linesize[0], width, height, p->linesize[0], 0);
438 
439  if (f->chroma_planes) {
440  decode_plane(fs, p->data[1] + ps*cx+cy*p->linesize[1], chroma_width, chroma_height, p->linesize[1], 1);
441  decode_plane(fs, p->data[2] + ps*cx+cy*p->linesize[2], chroma_width, chroma_height, p->linesize[2], 1);
442  }
443  if (fs->transparency)
444  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);
445  } else {
446  uint8_t *planes[3] = { p->data[0] + ps * x + y * p->linesize[0],
447  p->data[1] + ps * x + y * p->linesize[1],
448  p->data[2] + ps * x + y * p->linesize[2] };
449  decode_rgb_frame(fs, planes, width, height, p->linesize);
450  }
451  if (fs->ac && f->version > 2) {
452  int v;
453  get_rac(&fs->c, (uint8_t[]) { 129 });
454  v = fs->c.bytestream_end - fs->c.bytestream - 2 - 5*f->ec;
455  if (v) {
456  av_log(f->avctx, AV_LOG_ERROR, "bytestream end mismatching by %d\n", v);
457  fs->slice_damaged = 1;
458  }
459  }
460 
461  emms_c();
462 
463  ff_thread_report_progress(&f->picture, si, 0);
464 
465  return 0;
466 }
467 
468 static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
469 {
470  int v;
471  int i = 0;
473 
474  memset(state, 128, sizeof(state));
475 
476  for (v = 0; i < 128; v++) {
477  unsigned len = get_symbol(c, state, 0) + 1;
478 
479  if (len > 128 - i || !len)
480  return AVERROR_INVALIDDATA;
481 
482  while (len--) {
483  quant_table[i] = scale * v;
484  i++;
485  }
486  }
487 
488  for (i = 1; i < 128; i++)
489  quant_table[256 - i] = -quant_table[i];
490  quant_table[128] = -quant_table[127];
491 
492  return 2 * v - 1;
493 }
494 
496  int16_t quant_table[MAX_CONTEXT_INPUTS][256])
497 {
498  int i;
499  int context_count = 1;
500 
501  for (i = 0; i < 5; i++) {
502  context_count *= read_quant_table(c, quant_table[i], context_count);
503  if (context_count > 32768U) {
504  return AVERROR_INVALIDDATA;
505  }
506  }
507  return (context_count + 1) / 2;
508 }
509 
511 {
512  RangeCoder *const c = &f->c;
514  int i, j, k, ret;
515  uint8_t state2[32][CONTEXT_SIZE];
516  unsigned crc = 0;
517 
518  memset(state2, 128, sizeof(state2));
519  memset(state, 128, sizeof(state));
520 
522  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
523 
524  f->version = get_symbol(c, state, 0);
525  if (f->version < 2) {
526  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
527  return AVERROR_INVALIDDATA;
528  }
529  if (f->version > 2) {
530  c->bytestream_end -= 4;
531  f->micro_version = get_symbol(c, state, 0);
532  if (f->micro_version < 0)
533  return AVERROR_INVALIDDATA;
534  }
535  f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
536  if (f->ac > 1) {
537  for (i = 1; i < 256; i++)
538  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
539  }
540 
541  f->colorspace = get_symbol(c, state, 0); //YUV cs type
542  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
543  f->chroma_planes = get_rac(c, state);
544  f->chroma_h_shift = get_symbol(c, state, 0);
545  f->chroma_v_shift = get_symbol(c, state, 0);
546  f->transparency = get_rac(c, state);
547  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
548  f->num_h_slices = 1 + get_symbol(c, state, 0);
549  f->num_v_slices = 1 + get_symbol(c, state, 0);
550 
551  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
552  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
554  return AVERROR_INVALIDDATA;
555  }
556 
557  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
558  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
559  ) {
560  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
561  return AVERROR_INVALIDDATA;
562  }
563 
564  f->quant_table_count = get_symbol(c, state, 0);
565  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
566  return AVERROR_INVALIDDATA;
567 
568  for (i = 0; i < f->quant_table_count; i++) {
569  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
570  if (f->context_count[i] < 0) {
571  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
572  return AVERROR_INVALIDDATA;
573  }
574  }
575  if ((ret = ff_ffv1_allocate_initial_states(f)) < 0)
576  return ret;
577 
578  for (i = 0; i < f->quant_table_count; i++)
579  if (get_rac(c, state)) {
580  for (j = 0; j < f->context_count[i]; j++)
581  for (k = 0; k < CONTEXT_SIZE; k++) {
582  int pred = j ? f->initial_states[i][j - 1][k] : 128;
583  f->initial_states[i][j][k] =
584  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
585  }
586  }
587 
588  if (f->version > 2) {
589  f->ec = get_symbol(c, state, 0);
590  if (f->micro_version > 2)
591  f->intra = get_symbol(c, state, 0);
592  }
593 
594  if (f->version > 2) {
595  unsigned v;
598  if (v || f->avctx->extradata_size < 4) {
599  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
600  return AVERROR_INVALIDDATA;
601  }
602  crc = AV_RB32(f->avctx->extradata + f->avctx->extradata_size - 4);
603  }
604 
605  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
607  "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",
608  f->version, f->micro_version,
609  f->ac,
610  f->colorspace,
613  f->transparency,
614  f->num_h_slices, f->num_v_slices,
616  f->ec,
617  f->intra,
618  crc
619  );
620  return 0;
621 }
622 
623 static int read_header(FFV1Context *f)
624 {
626  int i, j, context_count = -1; //-1 to avoid warning
627  RangeCoder *const c = &f->slice_context[0]->c;
628 
629  memset(state, 128, sizeof(state));
630 
631  if (f->version < 2) {
633  unsigned v= get_symbol(c, state, 0);
634  if (v >= 2) {
635  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
636  return AVERROR_INVALIDDATA;
637  }
638  f->version = v;
639  f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
640  if (f->ac > 1) {
641  for (i = 1; i < 256; i++)
642  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
643  }
644 
645  colorspace = get_symbol(c, state, 0); //YUV cs type
646  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
647  chroma_planes = get_rac(c, state);
648  chroma_h_shift = get_symbol(c, state, 0);
649  chroma_v_shift = get_symbol(c, state, 0);
650  transparency = get_rac(c, state);
651  if (colorspace == 0 && f->avctx->skip_alpha)
652  transparency = 0;
653 
654  if (f->plane_count) {
655  if (colorspace != f->colorspace ||
656  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
657  chroma_planes != f->chroma_planes ||
658  chroma_h_shift != f->chroma_h_shift ||
659  chroma_v_shift != f->chroma_v_shift ||
660  transparency != f->transparency) {
661  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
662  return AVERROR_INVALIDDATA;
663  }
664  }
665 
666  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
667  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
668  chroma_h_shift, chroma_v_shift);
669  return AVERROR_INVALIDDATA;
670  }
671 
672  f->colorspace = colorspace;
678 
679  f->plane_count = 2 + f->transparency;
680  }
681 
682  if (f->colorspace == 0) {
683  if (!f->transparency && !f->chroma_planes) {
684  if (f->avctx->bits_per_raw_sample <= 8)
686  else
688  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
689  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
690  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
691  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
692  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
693  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
694  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
695  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
696  }
697  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
698  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
699  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
700  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
701  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
702  }
703  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
704  f->packed_at_lsb = 1;
705  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
706  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
707  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
708  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
709  }
710  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
711  f->packed_at_lsb = 1;
712  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
713  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
714  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
715  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
716  }
717  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
718  f->packed_at_lsb = 1;
719  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
720  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
721  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
722  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
723  }
724  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
725  f->packed_at_lsb = 1;
726  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
727  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
728  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
729  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
730  }
731  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
732  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
733  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
734  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
735  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
736  }
737  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
738  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
739  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
740  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
741  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
742  }
743  }
744  } else if (f->colorspace == 1) {
745  if (f->chroma_h_shift || f->chroma_v_shift) {
747  "chroma subsampling not supported in this colorspace\n");
748  return AVERROR(ENOSYS);
749  }
750  if ( f->avctx->bits_per_raw_sample == 9)
752  else if (f->avctx->bits_per_raw_sample == 10)
754  else if (f->avctx->bits_per_raw_sample == 12)
756  else if (f->avctx->bits_per_raw_sample == 14)
758  else
760  else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
761  } else {
762  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
763  return AVERROR(ENOSYS);
764  }
765  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
766  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
767  return AVERROR(ENOSYS);
768  }
769 
770  ff_dlog(f->avctx, "%d %d %d\n",
772  if (f->version < 2) {
773  context_count = read_quant_tables(c, f->quant_table);
774  if (context_count < 0) {
775  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
776  return AVERROR_INVALIDDATA;
777  }
778  } else if (f->version < 3) {
779  f->slice_count = get_symbol(c, state, 0);
780  } else {
781  const uint8_t *p = c->bytestream_end;
782  for (f->slice_count = 0;
783  f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
784  f->slice_count++) {
785  int trailer = 3 + 5*!!f->ec;
786  int size = AV_RB24(p-trailer);
787  if (size + trailer > p - c->bytestream_start)
788  break;
789  p -= size + trailer;
790  }
791  }
792  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
793  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);
794  return AVERROR_INVALIDDATA;
795  }
796 
797  for (j = 0; j < f->slice_count; j++) {
798  FFV1Context *fs = f->slice_context[j];
799  fs->ac = f->ac;
800  fs->packed_at_lsb = f->packed_at_lsb;
801 
802  fs->slice_damaged = 0;
803 
804  if (f->version == 2) {
805  fs->slice_x = get_symbol(c, state, 0) * f->width ;
806  fs->slice_y = get_symbol(c, state, 0) * f->height;
807  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
808  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
809 
810  fs->slice_x /= f->num_h_slices;
811  fs->slice_y /= f->num_v_slices;
812  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
813  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
814  if ((unsigned)fs->slice_width > f->width ||
815  (unsigned)fs->slice_height > f->height)
816  return AVERROR_INVALIDDATA;
817  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
818  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
819  return AVERROR_INVALIDDATA;
820  }
821 
822  for (i = 0; i < f->plane_count; i++) {
823  PlaneContext *const p = &fs->plane[i];
824 
825  if (f->version == 2) {
826  int idx = get_symbol(c, state, 0);
827  if (idx > (unsigned)f->quant_table_count) {
829  "quant_table_index out of range\n");
830  return AVERROR_INVALIDDATA;
831  }
832  p->quant_table_index = idx;
833  memcpy(p->quant_table, f->quant_tables[idx],
834  sizeof(p->quant_table));
835  context_count = f->context_count[idx];
836  } else {
837  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
838  }
839 
840  if (f->version <= 2) {
841  av_assert0(context_count >= 0);
842  if (p->context_count < context_count) {
843  av_freep(&p->state);
844  av_freep(&p->vlc_state);
845  }
847  }
848  }
849  }
850  return 0;
851 }
852 
854 {
855  FFV1Context *f = avctx->priv_data;
856  int ret;
857 
858  if ((ret = ff_ffv1_common_init(avctx)) < 0)
859  return ret;
860 
861  if (avctx->extradata && (ret = read_extra_header(f)) < 0)
862  return ret;
863 
864  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
865  return ret;
866 
867  avctx->internal->allocate_progress = 1;
868 
869  return 0;
870 }
871 
872 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
873 {
874  uint8_t *buf = avpkt->data;
875  int buf_size = avpkt->size;
876  FFV1Context *f = avctx->priv_data;
877  RangeCoder *const c = &f->slice_context[0]->c;
878  int i, ret;
879  uint8_t keystate = 128;
880  uint8_t *buf_p;
881  AVFrame *p;
882 
883  if (f->last_picture.f)
886 
887  f->cur = p = f->picture.f;
888 
889  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
890  /* we have interlaced material flagged in container */
891  p->interlaced_frame = 1;
892  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
893  p->top_field_first = 1;
894  }
895 
896  f->avctx = avctx;
897  ff_init_range_decoder(c, buf, buf_size);
898  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
899 
900  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
901  if (get_rac(c, &keystate)) {
902  p->key_frame = 1;
903  f->key_frame_ok = 0;
904  if ((ret = read_header(f)) < 0)
905  return ret;
906  f->key_frame_ok = 1;
907  } else {
908  if (!f->key_frame_ok) {
909  av_log(avctx, AV_LOG_ERROR,
910  "Cannot decode non-keyframe without valid keyframe\n");
911  return AVERROR_INVALIDDATA;
912  }
913  p->key_frame = 0;
914  }
915 
916  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
917  return ret;
918 
919  if (avctx->debug & FF_DEBUG_PICT_INFO)
920  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
921  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
922 
923  ff_thread_finish_setup(avctx);
924 
925  buf_p = buf + buf_size;
926  for (i = f->slice_count - 1; i >= 0; i--) {
927  FFV1Context *fs = f->slice_context[i];
928  int trailer = 3 + 5*!!f->ec;
929  int v;
930 
931  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
932  else v = buf_p - c->bytestream_start;
933  if (buf_p - c->bytestream_start < v) {
934  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
935  return AVERROR_INVALIDDATA;
936  }
937  buf_p -= v;
938 
939  if (f->ec) {
940  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
941  if (crc) {
942  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
943  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
944  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
945  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
946  } else if (ts != AV_NOPTS_VALUE) {
947  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
948  } else {
949  av_log(f->avctx, AV_LOG_ERROR, "\n");
950  }
951  fs->slice_damaged = 1;
952  }
953  if (avctx->debug & FF_DEBUG_PICT_INFO) {
954  av_log(avctx, AV_LOG_DEBUG, "slice %d, CRC: 0x%08X\n", i, AV_RB32(buf_p + v - 4));
955  }
956  }
957 
958  if (i) {
959  ff_init_range_decoder(&fs->c, buf_p, v);
960  } else
961  fs->c.bytestream_end = buf_p + v;
962 
963  fs->avctx = avctx;
964  fs->cur = p;
965  }
966 
967  avctx->execute(avctx,
968  decode_slice,
969  &f->slice_context[0],
970  NULL,
971  f->slice_count,
972  sizeof(void*));
973 
974  for (i = f->slice_count - 1; i >= 0; i--) {
975  FFV1Context *fs = f->slice_context[i];
976  int j;
977  if (fs->slice_damaged && f->last_picture.f->data[0]) {
978  const uint8_t *src[4];
979  uint8_t *dst[4];
980  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
981  for (j = 0; j < 4; j++) {
982  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
983  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
984  dst[j] = p->data[j] + p->linesize[j] *
985  (fs->slice_y >> sv) + (fs->slice_x >> sh);
986  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
987  (fs->slice_y >> sv) + (fs->slice_x >> sh);
988  }
989  av_image_copy(dst, p->linesize, src,
990  f->last_picture.f->linesize,
991  avctx->pix_fmt,
992  fs->slice_width,
993  fs->slice_height);
994  }
995  }
996  ff_thread_report_progress(&f->picture, INT_MAX, 0);
997 
998  f->picture_number++;
999 
1000  if (f->last_picture.f)
1002  f->cur = NULL;
1003  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
1004  return ret;
1005 
1006  *got_frame = 1;
1007 
1008  return buf_size;
1009 }
1010 
1012 {
1013  FFV1Context *f = avctx->priv_data;
1014  int i, ret;
1015 
1016  f->picture.f = NULL;
1017  f->last_picture.f = NULL;
1018  f->sample_buffer = NULL;
1019  f->slice_count = 0;
1020 
1021  for (i = 0; i < f->quant_table_count; i++) {
1022  av_assert0(f->version > 1);
1023  f->initial_states[i] = av_memdup(f->initial_states[i],
1024  f->context_count[i] * sizeof(*f->initial_states[i]));
1025  }
1026 
1027  f->picture.f = av_frame_alloc();
1028  f->last_picture.f = av_frame_alloc();
1029 
1030  if ((ret = ff_ffv1_init_slice_contexts(f)) < 0)
1031  return ret;
1032 
1033  return 0;
1034 }
1035 
1036 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1037 {
1038  fsdst->version = fsrc->version;
1039  fsdst->micro_version = fsrc->micro_version;
1040  fsdst->chroma_planes = fsrc->chroma_planes;
1041  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1042  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1043  fsdst->transparency = fsrc->transparency;
1044  fsdst->plane_count = fsrc->plane_count;
1045  fsdst->ac = fsrc->ac;
1046  fsdst->colorspace = fsrc->colorspace;
1047 
1048  fsdst->ec = fsrc->ec;
1049  fsdst->intra = fsrc->intra;
1050  fsdst->slice_damaged = fssrc->slice_damaged;
1051  fsdst->key_frame_ok = fsrc->key_frame_ok;
1052 
1054  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1055  fsdst->slice_count = fsrc->slice_count;
1056  if (fsrc->version<3){
1057  fsdst->slice_x = fssrc->slice_x;
1058  fsdst->slice_y = fssrc->slice_y;
1059  fsdst->slice_width = fssrc->slice_width;
1060  fsdst->slice_height = fssrc->slice_height;
1061  }
1062 }
1063 
1065 {
1066  FFV1Context *fsrc = src->priv_data;
1067  FFV1Context *fdst = dst->priv_data;
1068  int i, ret;
1069 
1070  if (dst == src)
1071  return 0;
1072 
1073  {
1077  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1078  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1079 
1080  memcpy(fdst, fsrc, sizeof(*fdst));
1081  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1082  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1083  fdst->picture = picture;
1084  fdst->last_picture = last_picture;
1085  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1086  FFV1Context *fssrc = fsrc->slice_context[i];
1087  FFV1Context *fsdst = fdst->slice_context[i];
1088  copy_fields(fsdst, fssrc, fsrc);
1089  }
1090  av_assert0(!fdst->plane[0].state);
1091  av_assert0(!fdst->sample_buffer);
1092  }
1093 
1094  av_assert1(fdst->slice_count == fsrc->slice_count);
1095 
1096 
1097  ff_thread_release_buffer(dst, &fdst->picture);
1098  if (fsrc->picture.f->data[0]) {
1099  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1100  return ret;
1101  }
1102 
1103  fdst->fsrc = fsrc;
1104 
1105  return 0;
1106 }
1107 
1109  .name = "ffv1",
1110  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1111  .type = AVMEDIA_TYPE_VIDEO,
1112  .id = AV_CODEC_ID_FFV1,
1113  .priv_data_size = sizeof(FFV1Context),
1114  .init = decode_init,
1115  .close = ff_ffv1_close,
1116  .decode = decode_frame,
1118  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1119  .capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/ |
1121 };
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:141
#define NULL
Definition: coverity.c:32
const uint8_t ff_log2_run[41]
Definition: bitstream.c:39
float v
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:415
const char * s
Definition: avisynth_c.h:631
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AV_PIX_FMT_YUVA422P9
Definition: pixfmt.h:409
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2129
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_PIX_FMT_YUVA420P10
Definition: pixfmt.h:411
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:412
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:68
misc image utilities
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:260
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
AVFrame * f
Definition: thread.h:36
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:64
int quant_table_count
Definition: ffv1.h:117
else temp
Definition: vf_mcdeint.c:257
const char * g
Definition: vf_curves.c:108
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static int decode_slice(AVCodecContext *c, void *arg)
Definition: ffv1dec.c:357
int slice_height
Definition: ffv1.h:124
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
int16_t * sample_buffer
Definition: ffv1.h:106
int version
Definition: ffv1.h:82
int micro_version
Definition: ffv1.h:83
Range coder.
uint8_t * bytestream_end
Definition: rangecoder.h:44
int num
numerator
Definition: rational.h:44
int size
Definition: avcodec.h:1424
const char * b
Definition: vf_curves.c:109
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:396
static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
Definition: ffv1dec.c:468
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:1722
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:872
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3003
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.
static av_always_inline void predict(PredictorState *ps, float *coef, int output_enable)
Definition: aacdec.c:173
#define sample
int height
Definition: ffv1.h:84
AVCodec.
Definition: avcodec.h:3472
uint8_t one_state[256]
Definition: rangecoder.h:41
int slice_reset_contexts
Definition: ffv1.h:127
int slice_rct_by_coef
Definition: ffv1.h:129
int plane_count
Definition: ffv1.h:95
int slice_damaged
Definition: ffv1.h:110
ThreadFrame picture
Definition: ffv1.h:91
#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:103
static int read_quant_tables(RangeCoder *c, int16_t quant_table[MAX_CONTEXT_INPUTS][256])
Definition: ffv1dec.c:495
uint8_t bits
Definition: crc.c:295
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:100
uint8_t
#define av_cold
Definition: attributes.h:74
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:135
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
AVOptions.
int8_t bias
Definition: ffv1.h:59
RangeCoder c
Definition: ffv1.h:77
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:365
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:1617
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:408
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:395
int slice_y
Definition: ffv1.h:126
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:103
ThreadFrame last_picture
Definition: ffv1.h:91
av_cold int ff_ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:200
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:252
static double av_q2d(AVRational a)
Convert rational to double.
Definition: rational.h:80
int coder_type
coder type
Definition: avcodec.h:2657
uint8_t * data
Definition: avcodec.h:1423
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:212
uint8_t count
Definition: ffv1.h:60
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
Definition: utils.c:3762
#define ff_dlog(a,...)
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:393
static void decode_rgb_frame(FFV1Context *s, uint8_t *src[3], int w, int h, int stride[3])
Definition: ffv1dec.c:222
int interlaced_frame
The content of the picture is interlaced.
Definition: frame.h:367
VlcState * vlc_state
Definition: ffv1.h:68
ptrdiff_t size
Definition: opengl_enc.c:101
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:414
high precision timer, useful to profile code
#define av_log(a,...)
int bits_per_raw_sample
Definition: ffv1.h:113
int slice_width
Definition: ffv1.h:123
GetBitContext gb
Definition: ffv1.h:78
#define U(x)
Definition: vp56_arith.h:37
AVFrame * cur
Definition: ffv1.h:94
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:3318
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:281
static int init_thread_copy(AVCodecContext *avctx)
Definition: ffv1dec.c:1011
#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:278
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:100
#define AVERROR(e)
Definition: error.h:43
int skip_alpha
Skip processing alpha if supported by codec.
Definition: avcodec.h:3381
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
const char * r
Definition: vf_curves.c:107
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
int context_count
Definition: ffv1.h:66
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:416
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:3479
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:383
int ff_ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:157
#define MAX_SLICES
Definition: dxva2_hevc.c:28
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
Libavcodec external API header.
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:920
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:288
static int get_vlc_symbol(GetBitContext *gb, VlcState *const state, int bits)
Definition: ffv1dec.c:67
uint8_t * bytestream
Definition: rangecoder.h:43
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index)
Definition: ffv1dec.c:180
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:67
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:214
int ac
1=range coder <-> 0=golomb rice
Definition: ffv1.h:96
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: ffv1dec.c:1064
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:99
int run_index
Definition: ffv1.h:104
Definition: ffv1.h:56
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:378
#define av_flatten
Definition: attributes.h:80
static av_noinline int get_symbol(RangeCoder *c, uint8_t *state, int is_signed)
Definition: ffv1dec.c:62
uint8_t state_transition[256]
Definition: ffv1.h:102
static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
Definition: ffv1dec.c:1036
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:242
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:364
#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:81
float y
int num_h_slices
Definition: ffv1.h:122
#define MAX_QUANT_TABLES
Definition: ffv1.h:53
int colorspace
Definition: ffv1.h:105
#define FF_CEIL_RSHIFT(a, b)
Definition: common.h:57
static float quant_table[96]
Definition: binkaudio.c:41
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
static struct @197 state
static int get_context(PlaneContext *p, int16_t *src, int16_t *last, int16_t *last2)
Definition: ffv1.h:163
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:185
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:356
int slice_count
Definition: ffv1.h:120
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:62
av_cold int ff_ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:112
av_cold int ff_ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:67
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:413
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:97
static av_always_inline void decode_line(FFV1Context *s, int w, int16_t *sample[2], int plane_index, int bits)
Definition: ffv1dec.c:97
int16_t drift
Definition: ffv1.h:57
int packed_at_lsb
Definition: ffv1.h:114
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:379
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:398
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:623
static const float pred[4]
Definition: siprdata.h:259
void * av_memdup(const void *p, size_t size)
Duplicate the buffer p.
Definition: mem.c:299
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:391
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:924
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:101
AVS_Value src
Definition: avisynth_c.h:482
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:199
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:280
int debug
debug
Definition: avcodec.h:2842
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:1502
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:357
int intra
Definition: ffv1.h:109
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:252
void * buf
Definition: avisynth_c.h:553
int extradata_size
Definition: avcodec.h:1618
static unsigned int get_bits1(GetBitContext *s)
Definition: get_bits.h:304
BYTE int const BYTE int int int height
Definition: avisynth_c.h:676
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:380
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:69
rational number numerator/denominator
Definition: rational.h:43
av_cold void ff_init_range_decoder(RangeCoder *c, const uint8_t *buf, int buf_size)
Definition: rangecoder.c:53
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:410
uint16_t step_minus1
Number of elements between 2 horizontally consecutive pixels minus 1.
Definition: pixdesc.h:40
int picture_number
Definition: ffv1.h:89
uint16_t error_sum
Definition: ffv1.h:58
#define AV_PIX_FMT_YUV420P9
Definition: pixfmt.h:377
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:115
int key_frame_ok
Definition: ffv1.h:111
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:397
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:381
int quant_table_index
Definition: ffv1.h:65
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:182
#define FF_DEBUG_PICT_INFO
Definition: avcodec.h:2843
const AVCRC * av_crc_get_table(AVCRCId crc_id)
Get an initialized standard CRC table.
Definition: crc.c:342
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:523
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:63
Y , 8bpp.
Definition: pixfmt.h:71
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:280
static double c[64]
void ff_ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:172
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:410
uint8_t(* state)[CONTEXT_SIZE]
Definition: ffv1.h:67
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:70
int den
denominator
Definition: rational.h:45
int slice_coding_mode
Definition: ffv1.h:128
uint8_t * bytestream_start
Definition: rangecoder.h:42
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:853
void * priv_data
Definition: avcodec.h:1544
int chroma_h_shift
Definition: ffv1.h:86
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:98
int transparency
Definition: ffv1.h:87
static av_always_inline int diff(const uint32_t a, const uint32_t b)
#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:3073
struct FFV1Context * fsrc
Definition: ffv1.h:92
int chroma_v_shift
Definition: ffv1.h:86
int top_field_first
If the content is interlaced, is top field displayed first.
Definition: frame.h:372
int len
int chroma_planes
Definition: ffv1.h:85
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1552
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:237
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:119
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1422
#define av_noinline
Definition: attributes.h:54
#define av_freep(p)
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:101
enum AVFieldOrder field_order
Field order.
Definition: avcodec.h:2259
#define av_always_inline
Definition: attributes.h:37
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
Definition: common.h:84
int ec
Definition: ffv1.h:108
enum AVColorSpace colorspace
Definition: dirac.c:102
static int get_sr_golomb(GetBitContext *gb, int k, int limit, int esc_len)
read signed golomb rice code (ffv1).
Definition: golomb.h:367
int num_v_slices
Definition: ffv1.h:121
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1400
static int read_extra_header(FFV1Context *f)
Definition: ffv1dec.c:510
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1216
AVCodecContext * avctx
Definition: ffv1.h:76
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:857
int slice_x
Definition: ffv1.h:125
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:392
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1416
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1108
int width
Definition: ffv1.h:84
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:361
static int width
int slice_rct_ry_coef
Definition: ffv1.h:130