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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 (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 = ffv1_init_slice_state(f, fs)) < 0)
413  return ret;
414  if (f->cur->key_frame || fs->slice_reset_contexts)
415  ffv1_clear_slice_state(f, fs);
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 
517  memset(state2, 128, sizeof(state2));
518  memset(state, 128, sizeof(state));
519 
521  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
522 
523  f->version = get_symbol(c, state, 0);
524  if (f->version < 2) {
525  av_log(f->avctx, AV_LOG_ERROR, "Invalid version in global header\n");
526  return AVERROR_INVALIDDATA;
527  }
528  if (f->version > 2) {
529  c->bytestream_end -= 4;
530  f->micro_version = get_symbol(c, state, 0);
531  if (f->micro_version < 0)
532  return AVERROR_INVALIDDATA;
533  }
534  f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
535  if (f->ac > 1) {
536  for (i = 1; i < 256; i++)
537  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
538  }
539 
540  f->colorspace = get_symbol(c, state, 0); //YUV cs type
541  f->avctx->bits_per_raw_sample = get_symbol(c, state, 0);
542  f->chroma_planes = get_rac(c, state);
543  f->chroma_h_shift = get_symbol(c, state, 0);
544  f->chroma_v_shift = get_symbol(c, state, 0);
545  f->transparency = get_rac(c, state);
546  f->plane_count = 1 + (f->chroma_planes || f->version<4) + f->transparency;
547  f->num_h_slices = 1 + get_symbol(c, state, 0);
548  f->num_v_slices = 1 + get_symbol(c, state, 0);
549 
550  if (f->chroma_h_shift > 4U || f->chroma_v_shift > 4U) {
551  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
553  return AVERROR_INVALIDDATA;
554  }
555 
556  if (f->num_h_slices > (unsigned)f->width || !f->num_h_slices ||
557  f->num_v_slices > (unsigned)f->height || !f->num_v_slices
558  ) {
559  av_log(f->avctx, AV_LOG_ERROR, "slice count invalid\n");
560  return AVERROR_INVALIDDATA;
561  }
562 
563  f->quant_table_count = get_symbol(c, state, 0);
564  if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES)
565  return AVERROR_INVALIDDATA;
566 
567  for (i = 0; i < f->quant_table_count; i++) {
568  f->context_count[i] = read_quant_tables(c, f->quant_tables[i]);
569  if (f->context_count[i] < 0) {
570  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
571  return AVERROR_INVALIDDATA;
572  }
573  }
574  if ((ret = ffv1_allocate_initial_states(f)) < 0)
575  return ret;
576 
577  for (i = 0; i < f->quant_table_count; i++)
578  if (get_rac(c, state)) {
579  for (j = 0; j < f->context_count[i]; j++)
580  for (k = 0; k < CONTEXT_SIZE; k++) {
581  int pred = j ? f->initial_states[i][j - 1][k] : 128;
582  f->initial_states[i][j][k] =
583  (pred + get_symbol(c, state2[k], 1)) & 0xFF;
584  }
585  }
586 
587  if (f->version > 2) {
588  f->ec = get_symbol(c, state, 0);
589  if (f->micro_version > 2)
590  f->intra = get_symbol(c, state, 0);
591  }
592 
593  if (f->version > 2) {
594  unsigned v;
597  if (v) {
598  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!\n", v);
599  return AVERROR_INVALIDDATA;
600  }
601  }
602 
603  if (f->avctx->debug & FF_DEBUG_PICT_INFO)
605  "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\n",
606  f->version, f->micro_version,
607  f->ac,
608  f->colorspace,
611  f->transparency,
612  f->num_h_slices, f->num_v_slices,
614  f->ec,
615  f->intra
616  );
617  return 0;
618 }
619 
620 static int read_header(FFV1Context *f)
621 {
623  int i, j, context_count = -1; //-1 to avoid warning
624  RangeCoder *const c = &f->slice_context[0]->c;
625 
626  memset(state, 128, sizeof(state));
627 
628  if (f->version < 2) {
630  unsigned v= get_symbol(c, state, 0);
631  if (v >= 2) {
632  av_log(f->avctx, AV_LOG_ERROR, "invalid version %d in ver01 header\n", v);
633  return AVERROR_INVALIDDATA;
634  }
635  f->version = v;
636  f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
637  if (f->ac > 1) {
638  for (i = 1; i < 256; i++)
639  f->state_transition[i] = get_symbol(c, state, 1) + c->one_state[i];
640  }
641 
642  colorspace = get_symbol(c, state, 0); //YUV cs type
643  bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
644  chroma_planes = get_rac(c, state);
645  chroma_h_shift = get_symbol(c, state, 0);
646  chroma_v_shift = get_symbol(c, state, 0);
647  transparency = get_rac(c, state);
648  if (colorspace == 0 && f->avctx->skip_alpha)
649  transparency = 0;
650 
651  if (f->plane_count) {
652  if (colorspace != f->colorspace ||
653  bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
654  chroma_planes != f->chroma_planes ||
655  chroma_h_shift != f->chroma_h_shift ||
656  chroma_v_shift != f->chroma_v_shift ||
657  transparency != f->transparency) {
658  av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
659  return AVERROR_INVALIDDATA;
660  }
661  }
662 
663  if (chroma_h_shift > 4U || chroma_v_shift > 4U) {
664  av_log(f->avctx, AV_LOG_ERROR, "chroma shift parameters %d %d are invalid\n",
665  chroma_h_shift, chroma_v_shift);
666  return AVERROR_INVALIDDATA;
667  }
668 
669  f->colorspace = colorspace;
675 
676  f->plane_count = 2 + f->transparency;
677  }
678 
679  if (f->colorspace == 0) {
680  if (!f->transparency && !f->chroma_planes) {
681  if (f->avctx->bits_per_raw_sample <= 8)
683  else
685  } else if (f->avctx->bits_per_raw_sample<=8 && !f->transparency) {
686  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
687  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P; break;
688  case 0x01: f->avctx->pix_fmt = AV_PIX_FMT_YUV440P; break;
689  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P; break;
690  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P; break;
691  case 0x20: f->avctx->pix_fmt = AV_PIX_FMT_YUV411P; break;
692  case 0x22: f->avctx->pix_fmt = AV_PIX_FMT_YUV410P; break;
693  }
694  } else if (f->avctx->bits_per_raw_sample <= 8 && f->transparency) {
695  switch(16*f->chroma_h_shift + f->chroma_v_shift) {
696  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P; break;
697  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P; break;
698  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P; break;
699  }
700  } else if (f->avctx->bits_per_raw_sample == 9 && !f->transparency) {
701  f->packed_at_lsb = 1;
702  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
703  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P9; break;
704  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P9; break;
705  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P9; break;
706  }
707  } else if (f->avctx->bits_per_raw_sample == 9 && f->transparency) {
708  f->packed_at_lsb = 1;
709  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
710  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; break;
711  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; break;
712  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; break;
713  }
714  } else if (f->avctx->bits_per_raw_sample == 10 && !f->transparency) {
715  f->packed_at_lsb = 1;
716  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
717  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P10; break;
718  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P10; break;
719  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P10; break;
720  }
721  } else if (f->avctx->bits_per_raw_sample == 10 && f->transparency) {
722  f->packed_at_lsb = 1;
723  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
724  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; break;
725  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; break;
726  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; break;
727  }
728  } else if (f->avctx->bits_per_raw_sample == 16 && !f->transparency){
729  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
730  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUV444P16; break;
731  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUV422P16; break;
732  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUV420P16; break;
733  }
734  } else if (f->avctx->bits_per_raw_sample == 16 && f->transparency){
735  switch(16 * f->chroma_h_shift + f->chroma_v_shift) {
736  case 0x00: f->avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; break;
737  case 0x10: f->avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; break;
738  case 0x11: f->avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; break;
739  }
740  }
741  } else if (f->colorspace == 1) {
742  if (f->chroma_h_shift || f->chroma_v_shift) {
744  "chroma subsampling not supported in this colorspace\n");
745  return AVERROR(ENOSYS);
746  }
747  if ( f->avctx->bits_per_raw_sample == 9)
749  else if (f->avctx->bits_per_raw_sample == 10)
751  else if (f->avctx->bits_per_raw_sample == 12)
753  else if (f->avctx->bits_per_raw_sample == 14)
755  else
757  else f->avctx->pix_fmt = AV_PIX_FMT_0RGB32;
758  } else {
759  av_log(f->avctx, AV_LOG_ERROR, "colorspace not supported\n");
760  return AVERROR(ENOSYS);
761  }
762  if (f->avctx->pix_fmt == AV_PIX_FMT_NONE) {
763  av_log(f->avctx, AV_LOG_ERROR, "format not supported\n");
764  return AVERROR(ENOSYS);
765  }
766 
767  ff_dlog(f->avctx, "%d %d %d\n",
769  if (f->version < 2) {
770  context_count = read_quant_tables(c, f->quant_table);
771  if (context_count < 0) {
772  av_log(f->avctx, AV_LOG_ERROR, "read_quant_table error\n");
773  return AVERROR_INVALIDDATA;
774  }
775  } else if (f->version < 3) {
776  f->slice_count = get_symbol(c, state, 0);
777  } else {
778  const uint8_t *p = c->bytestream_end;
779  for (f->slice_count = 0;
780  f->slice_count < MAX_SLICES && 3 < p - c->bytestream_start;
781  f->slice_count++) {
782  int trailer = 3 + 5*!!f->ec;
783  int size = AV_RB24(p-trailer);
784  if (size + trailer > p - c->bytestream_start)
785  break;
786  p -= size + trailer;
787  }
788  }
789  if (f->slice_count > (unsigned)MAX_SLICES || f->slice_count <= 0) {
790  av_log(f->avctx, AV_LOG_ERROR, "slice count %d is invalid\n", f->slice_count);
791  return AVERROR_INVALIDDATA;
792  }
793 
794  for (j = 0; j < f->slice_count; j++) {
795  FFV1Context *fs = f->slice_context[j];
796  fs->ac = f->ac;
797  fs->packed_at_lsb = f->packed_at_lsb;
798 
799  fs->slice_damaged = 0;
800 
801  if (f->version == 2) {
802  fs->slice_x = get_symbol(c, state, 0) * f->width ;
803  fs->slice_y = get_symbol(c, state, 0) * f->height;
804  fs->slice_width = (get_symbol(c, state, 0) + 1) * f->width + fs->slice_x;
805  fs->slice_height = (get_symbol(c, state, 0) + 1) * f->height + fs->slice_y;
806 
807  fs->slice_x /= f->num_h_slices;
808  fs->slice_y /= f->num_v_slices;
809  fs->slice_width = fs->slice_width / f->num_h_slices - fs->slice_x;
810  fs->slice_height = fs->slice_height / f->num_v_slices - fs->slice_y;
811  if ((unsigned)fs->slice_width > f->width ||
812  (unsigned)fs->slice_height > f->height)
813  return AVERROR_INVALIDDATA;
814  if ( (unsigned)fs->slice_x + (uint64_t)fs->slice_width > f->width
815  || (unsigned)fs->slice_y + (uint64_t)fs->slice_height > f->height)
816  return AVERROR_INVALIDDATA;
817  }
818 
819  for (i = 0; i < f->plane_count; i++) {
820  PlaneContext *const p = &fs->plane[i];
821 
822  if (f->version == 2) {
823  int idx = get_symbol(c, state, 0);
824  if (idx > (unsigned)f->quant_table_count) {
826  "quant_table_index out of range\n");
827  return AVERROR_INVALIDDATA;
828  }
829  p->quant_table_index = idx;
830  memcpy(p->quant_table, f->quant_tables[idx],
831  sizeof(p->quant_table));
832  context_count = f->context_count[idx];
833  } else {
834  memcpy(p->quant_table, f->quant_table, sizeof(p->quant_table));
835  }
836 
837  if (f->version <= 2) {
838  av_assert0(context_count >= 0);
839  if (p->context_count < context_count) {
840  av_freep(&p->state);
841  av_freep(&p->vlc_state);
842  }
844  }
845  }
846  }
847  return 0;
848 }
849 
851 {
852  FFV1Context *f = avctx->priv_data;
853  int ret;
854 
855  if ((ret = ffv1_common_init(avctx)) < 0)
856  return ret;
857 
858  if (avctx->extradata && (ret = read_extra_header(f)) < 0)
859  return ret;
860 
861  if ((ret = ffv1_init_slice_contexts(f)) < 0)
862  return ret;
863 
864  avctx->internal->allocate_progress = 1;
865 
866  return 0;
867 }
868 
869 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
870 {
871  uint8_t *buf = avpkt->data;
872  int buf_size = avpkt->size;
873  FFV1Context *f = avctx->priv_data;
874  RangeCoder *const c = &f->slice_context[0]->c;
875  int i, ret;
876  uint8_t keystate = 128;
877  uint8_t *buf_p;
878  AVFrame *p;
879 
880  if (f->last_picture.f)
883 
884  f->cur = p = f->picture.f;
885 
886  if (f->version < 3 && avctx->field_order > AV_FIELD_PROGRESSIVE) {
887  /* we have interlaced material flagged in container */
888  p->interlaced_frame = 1;
889  if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
890  p->top_field_first = 1;
891  }
892 
893  f->avctx = avctx;
894  ff_init_range_decoder(c, buf, buf_size);
895  ff_build_rac_states(c, 0.05 * (1LL << 32), 256 - 8);
896 
897  p->pict_type = AV_PICTURE_TYPE_I; //FIXME I vs. P
898  if (get_rac(c, &keystate)) {
899  p->key_frame = 1;
900  f->key_frame_ok = 0;
901  if ((ret = read_header(f)) < 0)
902  return ret;
903  f->key_frame_ok = 1;
904  } else {
905  if (!f->key_frame_ok) {
906  av_log(avctx, AV_LOG_ERROR,
907  "Cannot decode non-keyframe without valid keyframe\n");
908  return AVERROR_INVALIDDATA;
909  }
910  p->key_frame = 0;
911  }
912 
913  if ((ret = ff_thread_get_buffer(avctx, &f->picture, AV_GET_BUFFER_FLAG_REF)) < 0)
914  return ret;
915 
916  if (avctx->debug & FF_DEBUG_PICT_INFO)
917  av_log(avctx, AV_LOG_DEBUG, "ver:%d keyframe:%d coder:%d ec:%d slices:%d bps:%d\n",
918  f->version, p->key_frame, f->ac, f->ec, f->slice_count, f->avctx->bits_per_raw_sample);
919 
920  ff_thread_finish_setup(avctx);
921 
922  buf_p = buf + buf_size;
923  for (i = f->slice_count - 1; i >= 0; i--) {
924  FFV1Context *fs = f->slice_context[i];
925  int trailer = 3 + 5*!!f->ec;
926  int v;
927 
928  if (i || f->version > 2) v = AV_RB24(buf_p-trailer) + trailer;
929  else v = buf_p - c->bytestream_start;
930  if (buf_p - c->bytestream_start < v) {
931  av_log(avctx, AV_LOG_ERROR, "Slice pointer chain broken\n");
932  return AVERROR_INVALIDDATA;
933  }
934  buf_p -= v;
935 
936  if (f->ec) {
937  unsigned crc = av_crc(av_crc_get_table(AV_CRC_32_IEEE), 0, buf_p, v);
938  if (crc) {
939  int64_t ts = avpkt->pts != AV_NOPTS_VALUE ? avpkt->pts : avpkt->dts;
940  av_log(f->avctx, AV_LOG_ERROR, "CRC mismatch %X!", crc);
941  if (ts != AV_NOPTS_VALUE && avctx->pkt_timebase.num) {
942  av_log(f->avctx, AV_LOG_ERROR, "at %f seconds\n", ts*av_q2d(avctx->pkt_timebase));
943  } else if (ts != AV_NOPTS_VALUE) {
944  av_log(f->avctx, AV_LOG_ERROR, "at %"PRId64"\n", ts);
945  } else {
946  av_log(f->avctx, AV_LOG_ERROR, "\n");
947  }
948  fs->slice_damaged = 1;
949  }
950  }
951 
952  if (i) {
953  ff_init_range_decoder(&fs->c, buf_p, v);
954  } else
955  fs->c.bytestream_end = buf_p + v;
956 
957  fs->avctx = avctx;
958  fs->cur = p;
959  }
960 
961  avctx->execute(avctx,
962  decode_slice,
963  &f->slice_context[0],
964  NULL,
965  f->slice_count,
966  sizeof(void*));
967 
968  for (i = f->slice_count - 1; i >= 0; i--) {
969  FFV1Context *fs = f->slice_context[i];
970  int j;
971  if (fs->slice_damaged && f->last_picture.f->data[0]) {
972  const uint8_t *src[4];
973  uint8_t *dst[4];
974  ff_thread_await_progress(&f->last_picture, INT_MAX, 0);
975  for (j = 0; j < 4; j++) {
976  int sh = (j == 1 || j == 2) ? f->chroma_h_shift : 0;
977  int sv = (j == 1 || j == 2) ? f->chroma_v_shift : 0;
978  dst[j] = p->data[j] + p->linesize[j] *
979  (fs->slice_y >> sv) + (fs->slice_x >> sh);
980  src[j] = f->last_picture.f->data[j] + f->last_picture.f->linesize[j] *
981  (fs->slice_y >> sv) + (fs->slice_x >> sh);
982  }
983  av_image_copy(dst, p->linesize, src,
984  f->last_picture.f->linesize,
985  avctx->pix_fmt,
986  fs->slice_width,
987  fs->slice_height);
988  }
989  }
990  ff_thread_report_progress(&f->picture, INT_MAX, 0);
991 
992  f->picture_number++;
993 
994  if (f->last_picture.f)
996  f->cur = NULL;
997  if ((ret = av_frame_ref(data, f->picture.f)) < 0)
998  return ret;
999 
1000  *got_frame = 1;
1001 
1002  return buf_size;
1003 }
1004 
1006 {
1007  FFV1Context *f = avctx->priv_data;
1008  int i, ret;
1009 
1010  f->picture.f = NULL;
1011  f->last_picture.f = NULL;
1012  f->sample_buffer = NULL;
1013  f->slice_count = 0;
1014 
1015  for (i = 0; i < f->quant_table_count; i++) {
1016  av_assert0(f->version > 1);
1017  f->initial_states[i] = av_memdup(f->initial_states[i],
1018  f->context_count[i] * sizeof(*f->initial_states[i]));
1019  }
1020 
1021  f->picture.f = av_frame_alloc();
1022  f->last_picture.f = av_frame_alloc();
1023 
1024  if ((ret = ffv1_init_slice_contexts(f)) < 0)
1025  return ret;
1026 
1027  return 0;
1028 }
1029 
1030 static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
1031 {
1032  fsdst->version = fsrc->version;
1033  fsdst->micro_version = fsrc->micro_version;
1034  fsdst->chroma_planes = fsrc->chroma_planes;
1035  fsdst->chroma_h_shift = fsrc->chroma_h_shift;
1036  fsdst->chroma_v_shift = fsrc->chroma_v_shift;
1037  fsdst->transparency = fsrc->transparency;
1038  fsdst->plane_count = fsrc->plane_count;
1039  fsdst->ac = fsrc->ac;
1040  fsdst->colorspace = fsrc->colorspace;
1041 
1042  fsdst->ec = fsrc->ec;
1043  fsdst->intra = fsrc->intra;
1044  fsdst->slice_damaged = fssrc->slice_damaged;
1045  fsdst->key_frame_ok = fsrc->key_frame_ok;
1046 
1048  fsdst->packed_at_lsb = fsrc->packed_at_lsb;
1049  fsdst->slice_count = fsrc->slice_count;
1050  if (fsrc->version<3){
1051  fsdst->slice_x = fssrc->slice_x;
1052  fsdst->slice_y = fssrc->slice_y;
1053  fsdst->slice_width = fssrc->slice_width;
1054  fsdst->slice_height = fssrc->slice_height;
1055  }
1056 }
1057 
1059 {
1060  FFV1Context *fsrc = src->priv_data;
1061  FFV1Context *fdst = dst->priv_data;
1062  int i, ret;
1063 
1064  if (dst == src)
1065  return 0;
1066 
1067  {
1071  memcpy(initial_states, fdst->initial_states, sizeof(fdst->initial_states));
1072  memcpy(slice_context, fdst->slice_context , sizeof(fdst->slice_context));
1073 
1074  memcpy(fdst, fsrc, sizeof(*fdst));
1075  memcpy(fdst->initial_states, initial_states, sizeof(fdst->initial_states));
1076  memcpy(fdst->slice_context, slice_context , sizeof(fdst->slice_context));
1077  fdst->picture = picture;
1078  fdst->last_picture = last_picture;
1079  for (i = 0; i<fdst->num_h_slices * fdst->num_v_slices; i++) {
1080  FFV1Context *fssrc = fsrc->slice_context[i];
1081  FFV1Context *fsdst = fdst->slice_context[i];
1082  copy_fields(fsdst, fssrc, fsrc);
1083  }
1084  av_assert0(!fdst->plane[0].state);
1085  av_assert0(!fdst->sample_buffer);
1086  }
1087 
1088  av_assert1(fdst->slice_count == fsrc->slice_count);
1089 
1090 
1091  ff_thread_release_buffer(dst, &fdst->picture);
1092  if (fsrc->picture.f->data[0]) {
1093  if ((ret = ff_thread_ref_frame(&fdst->picture, &fsrc->picture)) < 0)
1094  return ret;
1095  }
1096 
1097  fdst->fsrc = fsrc;
1098 
1099  return 0;
1100 }
1101 
1103  .name = "ffv1",
1104  .long_name = NULL_IF_CONFIG_SMALL("FFmpeg video codec #1"),
1105  .type = AVMEDIA_TYPE_VIDEO,
1106  .id = AV_CODEC_ID_FFV1,
1107  .priv_data_size = sizeof(FFV1Context),
1108  .init = decode_init,
1109  .close = ffv1_close,
1110  .decode = decode_frame,
1112  .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1113  .capabilities = CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/ |
1115 };
static av_always_inline int fold(int diff, int bits)
Definition: ffv1.h:140
int ffv1_allocate_initial_states(FFV1Context *f)
Definition: ffv1.c:157
#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:399
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:393
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2090
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:395
av_cold int ffv1_common_init(AVCodecContext *avctx)
Definition: ffv1.c:42
#define AV_PIX_FMT_YUVA422P10
Definition: pixfmt.h:396
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:116
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:123
#define MAX_CONTEXT_INPUTS
Definition: ffv1.h:54
int16_t * sample_buffer
Definition: ffv1.h:105
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:1163
const char * b
Definition: vf_curves.c:109
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:380
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:1444
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: ffv1dec.c:869
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:2727
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:1876
#define sample
int height
Definition: ffv1.h:84
AVCodec.
Definition: avcodec.h:3181
uint8_t one_state[256]
Definition: rangecoder.h:41
int slice_reset_contexts
Definition: ffv1.h:126
int slice_rct_by_coef
Definition: ffv1.h:128
int plane_count
Definition: ffv1.h:94
int slice_damaged
Definition: ffv1.h:109
ThreadFrame picture
Definition: ffv1.h:90
#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
if()
Definition: avfilter.c:975
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:363
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1355
#define AV_PIX_FMT_YUVA420P9
Definition: pixfmt.h:392
#define AV_PIX_FMT_GBRP9
Definition: pixfmt.h:379
int slice_y
Definition: ffv1.h:125
uint8_t(*[MAX_QUANT_TABLES] initial_states)[32]
Definition: ffv1.h:102
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:789
ThreadFrame last_picture
Definition: ffv1.h:90
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:2380
uint8_t * data
Definition: avcodec.h:1162
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:3683
bitstream reader API header.
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:377
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
av_cold int ffv1_init_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:67
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:398
high precision timer, useful to profile code
#define av_log(a,...)
int bits_per_raw_sample
Definition: ffv1.h:112
int slice_width
Definition: ffv1.h:122
GetBitContext gb
Definition: ffv1.h:78
#define U(x)
Definition: vp56_arith.h:37
AVFrame * cur
Definition: ffv1.h:93
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:3039
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:269
static int init_thread_copy(AVCodecContext *avctx)
Definition: ffv1dec.c:1005
#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:99
#define AVERROR(e)
Definition: error.h:43
int skip_alpha
Skip processing alpha if supported by codec.
Definition: avcodec.h:3102
#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:400
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:3188
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:367
#define MAX_SLICES
Definition: dxva2_hevc.c:28
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
Libavcodec external API header.
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:95
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: ffv1dec.c:1058
int16_t quant_table[MAX_CONTEXT_INPUTS][256]
Definition: ffv1.h:98
int run_index
Definition: ffv1.h:103
Definition: ffv1.h:56
#define AV_PIX_FMT_YUV422P9
Definition: pixfmt.h:362
#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:101
static void copy_fields(FFV1Context *fsdst, FFV1Context *fssrc, FFV1Context *fsrc)
Definition: ffv1dec.c:1030
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:242
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:348
#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:66
float y
int num_h_slices
Definition: ffv1.h:121
ret
Definition: avfilter.c:974
#define MAX_QUANT_TABLES
Definition: ffv1.h:53
int colorspace
Definition: ffv1.h:104
#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 int get_context(PlaneContext *p, int16_t *src, int16_t *last, int16_t *last2)
Definition: ffv1.h:162
static void update_vlc_state(VlcState *const state, const int v)
Definition: ffv1.h:184
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:119
void ff_build_rac_states(RangeCoder *c, int factor, int max_p)
Definition: rangecoder.c:62
#define AV_PIX_FMT_YUVA444P10
Definition: pixfmt.h:397
int ac_byte_count
number of bytes used for AC coding
Definition: ffv1.h:96
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:113
#define AV_PIX_FMT_YUV444P9
Definition: pixfmt.h:363
#define AV_PIX_FMT_GBRP14
Definition: pixfmt.h:382
av_cold int ffv1_init_slice_contexts(FFV1Context *f)
Definition: ffv1.c:112
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:620
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:297
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:375
int context_count[MAX_QUANT_TABLES]
Definition: ffv1.h:100
AVS_Value src
Definition: avisynth_c.h:482
#define ff_dlog(ctx,...)
Definition: internal.h:54
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:85
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:268
int debug
debug
Definition: avcodec.h:2565
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:1241
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:341
int intra
Definition: ffv1.h:108
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:1356
void ffv1_clear_slice_state(FFV1Context *f, FFV1Context *fs)
Definition: ffv1.c:172
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:364
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:361
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:117
int key_frame_ok
Definition: ffv1.h:110
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:381
static uint32_t state
Definition: trasher.c:27
#define CONTEXT_SIZE
Definition: ffv1.h:51
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:365
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:2566
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:522
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
#define CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:870
common internal api header.
#define CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:866
static double c[64]
#define AV_PIX_FMT_YUVA444P9
Definition: pixfmt.h:394
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:127
uint8_t * bytestream_start
Definition: rangecoder.h:42
static av_cold int decode_init(AVCodecContext *avctx)
Definition: ffv1dec.c:850
void * priv_data
Definition: avcodec.h:1283
int chroma_h_shift
Definition: ffv1.h:86
PlaneContext plane[MAX_PLANES]
Definition: ffv1.h:97
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:2793
struct FFV1Context * fsrc
Definition: ffv1.h:91
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:1291
av_cold int ffv1_close(AVCodecContext *avctx)
Definition: ffv1.c:200
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:237
struct FFV1Context * slice_context[MAX_SLICES]
Definition: ffv1.h:118
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1161
#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:1982
#define av_always_inline
Definition: attributes.h:37
#define av_malloc_array(a, b)
#define FFSWAP(type, a, b)
Definition: common.h:69
int ec
Definition: ffv1.h:107
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:120
exp golomb vlc stuff
This structure stores compressed data.
Definition: avcodec.h:1139
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:969
AVCodecContext * avctx
Definition: ffv1.h:76
int slice_x
Definition: ffv1.h:124
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:376
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1155
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:241
AVCodec ff_ffv1_decoder
Definition: ffv1dec.c:1102
int width
Definition: ffv1.h:84
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:345
static int width
int slice_rct_ry_coef
Definition: ffv1.h:129