FFmpeg  4.4
cbs_av1_syntax_template.c
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3  *
4  * FFmpeg is free software; you can redistribute it and/or
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8  *
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12  * Lesser General Public License for more details.
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17  */
18 
20  AV1RawOBUHeader *current)
21 {
23  int err;
24 
25  HEADER("OBU header");
26 
27  fc(1, obu_forbidden_bit, 0, 0);
28 
29  fc(4, obu_type, 0, AV1_OBU_PADDING);
30  flag(obu_extension_flag);
31  flag(obu_has_size_field);
32 
33  fc(1, obu_reserved_1bit, 0, 0);
34 
35  if (current->obu_extension_flag) {
36  fb(3, temporal_id);
37  fb(2, spatial_id);
38  fc(3, extension_header_reserved_3bits, 0, 0);
39  } else {
40  infer(temporal_id, 0);
41  infer(spatial_id, 0);
42  }
43 
44  priv->temporal_id = current->temporal_id;
45  priv->spatial_id = current->spatial_id;
46 
47  return 0;
48 }
49 
50 static int FUNC(trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw, int nb_bits)
51 {
52  int err;
53 
54  av_assert0(nb_bits > 0);
55 
56  fixed(1, trailing_one_bit, 1);
57  --nb_bits;
58 
59  while (nb_bits > 0) {
60  fixed(1, trailing_zero_bit, 0);
61  --nb_bits;
62  }
63 
64  return 0;
65 }
66 
68 {
69  int err;
70 
71  while (byte_alignment(rw) != 0)
72  fixed(1, zero_bit, 0);
73 
74  return 0;
75 }
76 
78  AV1RawColorConfig *current, int seq_profile)
79 {
81  int err;
82 
83  flag(high_bitdepth);
84 
85  if (seq_profile == FF_PROFILE_AV1_PROFESSIONAL &&
86  current->high_bitdepth) {
87  flag(twelve_bit);
88  priv->bit_depth = current->twelve_bit ? 12 : 10;
89  } else {
90  priv->bit_depth = current->high_bitdepth ? 10 : 8;
91  }
92 
93  if (seq_profile == FF_PROFILE_AV1_HIGH)
94  infer(mono_chrome, 0);
95  else
96  flag(mono_chrome);
97  priv->num_planes = current->mono_chrome ? 1 : 3;
98 
99  flag(color_description_present_flag);
100  if (current->color_description_present_flag) {
101  fb(8, color_primaries);
103  fb(8, matrix_coefficients);
104  } else {
107  infer(matrix_coefficients, AVCOL_SPC_UNSPECIFIED);
108  }
109 
110  if (current->mono_chrome) {
111  flag(color_range);
112 
113  infer(subsampling_x, 1);
114  infer(subsampling_y, 1);
115  infer(chroma_sample_position, AV1_CSP_UNKNOWN);
116  infer(separate_uv_delta_q, 0);
117 
118  } else if (current->color_primaries == AVCOL_PRI_BT709 &&
119  current->transfer_characteristics == AVCOL_TRC_IEC61966_2_1 &&
120  current->matrix_coefficients == AVCOL_SPC_RGB) {
121  infer(color_range, 1);
122  infer(subsampling_x, 0);
123  infer(subsampling_y, 0);
124  flag(separate_uv_delta_q);
125 
126  } else {
127  flag(color_range);
128 
129  if (seq_profile == FF_PROFILE_AV1_MAIN) {
130  infer(subsampling_x, 1);
131  infer(subsampling_y, 1);
132  } else if (seq_profile == FF_PROFILE_AV1_HIGH) {
133  infer(subsampling_x, 0);
134  infer(subsampling_y, 0);
135  } else {
136  if (priv->bit_depth == 12) {
137  fb(1, subsampling_x);
138  if (current->subsampling_x)
139  fb(1, subsampling_y);
140  else
141  infer(subsampling_y, 0);
142  } else {
143  infer(subsampling_x, 1);
144  infer(subsampling_y, 0);
145  }
146  }
147  if (current->subsampling_x && current->subsampling_y) {
148  fc(2, chroma_sample_position, AV1_CSP_UNKNOWN,
150  }
151 
152  flag(separate_uv_delta_q);
153  }
154 
155  return 0;
156 }
157 
159  AV1RawTimingInfo *current)
160 {
161  int err;
162 
163  fc(32, num_units_in_display_tick, 1, MAX_UINT_BITS(32));
164  fc(32, time_scale, 1, MAX_UINT_BITS(32));
165 
166  flag(equal_picture_interval);
167  if (current->equal_picture_interval)
168  uvlc(num_ticks_per_picture_minus_1, 0, MAX_UINT_BITS(32) - 1);
169 
170  return 0;
171 }
172 
174  AV1RawDecoderModelInfo *current)
175 {
176  int err;
177 
178  fb(5, buffer_delay_length_minus_1);
179  fb(32, num_units_in_decoding_tick);
180  fb(5, buffer_removal_time_length_minus_1);
181  fb(5, frame_presentation_time_length_minus_1);
182 
183  return 0;
184 }
185 
187  AV1RawSequenceHeader *current)
188 {
189  int i, err;
190 
191  HEADER("Sequence Header");
192 
193  fc(3, seq_profile, FF_PROFILE_AV1_MAIN,
195  flag(still_picture);
196  flag(reduced_still_picture_header);
197 
198  if (current->reduced_still_picture_header) {
199  infer(timing_info_present_flag, 0);
200  infer(decoder_model_info_present_flag, 0);
201  infer(initial_display_delay_present_flag, 0);
202  infer(operating_points_cnt_minus_1, 0);
203  infer(operating_point_idc[0], 0);
204 
205  fb(5, seq_level_idx[0]);
206 
207  infer(seq_tier[0], 0);
208  infer(decoder_model_present_for_this_op[0], 0);
209  infer(initial_display_delay_present_for_this_op[0], 0);
210 
211  } else {
212  flag(timing_info_present_flag);
213  if (current->timing_info_present_flag) {
214  CHECK(FUNC(timing_info)(ctx, rw, &current->timing_info));
215 
216  flag(decoder_model_info_present_flag);
217  if (current->decoder_model_info_present_flag) {
219  (ctx, rw, &current->decoder_model_info));
220  }
221  } else {
222  infer(decoder_model_info_present_flag, 0);
223  }
224 
225  flag(initial_display_delay_present_flag);
226 
227  fb(5, operating_points_cnt_minus_1);
228  for (i = 0; i <= current->operating_points_cnt_minus_1; i++) {
229  fbs(12, operating_point_idc[i], 1, i);
230  fbs(5, seq_level_idx[i], 1, i);
231 
232  if (current->seq_level_idx[i] > 7)
233  flags(seq_tier[i], 1, i);
234  else
235  infer(seq_tier[i], 0);
236 
237  if (current->decoder_model_info_present_flag) {
238  flags(decoder_model_present_for_this_op[i], 1, i);
239  if (current->decoder_model_present_for_this_op[i]) {
240  int n = current->decoder_model_info.buffer_delay_length_minus_1 + 1;
241  fbs(n, decoder_buffer_delay[i], 1, i);
242  fbs(n, encoder_buffer_delay[i], 1, i);
243  flags(low_delay_mode_flag[i], 1, i);
244  }
245  } else {
246  infer(decoder_model_present_for_this_op[i], 0);
247  }
248 
249  if (current->initial_display_delay_present_flag) {
250  flags(initial_display_delay_present_for_this_op[i], 1, i);
251  if (current->initial_display_delay_present_for_this_op[i])
252  fbs(4, initial_display_delay_minus_1[i], 1, i);
253  }
254  }
255  }
256 
257  fb(4, frame_width_bits_minus_1);
258  fb(4, frame_height_bits_minus_1);
259 
260  fb(current->frame_width_bits_minus_1 + 1, max_frame_width_minus_1);
261  fb(current->frame_height_bits_minus_1 + 1, max_frame_height_minus_1);
262 
263  if (current->reduced_still_picture_header)
264  infer(frame_id_numbers_present_flag, 0);
265  else
266  flag(frame_id_numbers_present_flag);
267  if (current->frame_id_numbers_present_flag) {
268  fb(4, delta_frame_id_length_minus_2);
269  fb(3, additional_frame_id_length_minus_1);
270  }
271 
272  flag(use_128x128_superblock);
273  flag(enable_filter_intra);
274  flag(enable_intra_edge_filter);
275 
276  if (current->reduced_still_picture_header) {
277  infer(enable_interintra_compound, 0);
278  infer(enable_masked_compound, 0);
279  infer(enable_warped_motion, 0);
280  infer(enable_dual_filter, 0);
281  infer(enable_order_hint, 0);
282  infer(enable_jnt_comp, 0);
283  infer(enable_ref_frame_mvs, 0);
284 
285  infer(seq_force_screen_content_tools,
287  infer(seq_force_integer_mv,
289  } else {
290  flag(enable_interintra_compound);
291  flag(enable_masked_compound);
292  flag(enable_warped_motion);
293  flag(enable_dual_filter);
294 
295  flag(enable_order_hint);
296  if (current->enable_order_hint) {
297  flag(enable_jnt_comp);
298  flag(enable_ref_frame_mvs);
299  } else {
300  infer(enable_jnt_comp, 0);
301  infer(enable_ref_frame_mvs, 0);
302  }
303 
304  flag(seq_choose_screen_content_tools);
305  if (current->seq_choose_screen_content_tools)
306  infer(seq_force_screen_content_tools,
308  else
309  fb(1, seq_force_screen_content_tools);
310  if (current->seq_force_screen_content_tools > 0) {
311  flag(seq_choose_integer_mv);
312  if (current->seq_choose_integer_mv)
313  infer(seq_force_integer_mv,
315  else
316  fb(1, seq_force_integer_mv);
317  } else {
318  infer(seq_force_integer_mv, AV1_SELECT_INTEGER_MV);
319  }
320 
321  if (current->enable_order_hint)
322  fb(3, order_hint_bits_minus_1);
323  }
324 
325  flag(enable_superres);
326  flag(enable_cdef);
327  flag(enable_restoration);
328 
329  CHECK(FUNC(color_config)(ctx, rw, &current->color_config,
330  current->seq_profile));
331 
332  flag(film_grain_params_present);
333 
334  return 0;
335 }
336 
338 {
340 
341  HEADER("Temporal Delimiter");
342 
343  priv->seen_frame_header = 0;
344 
345  return 0;
346 }
347 
349  AV1RawFrameHeader *current)
350 {
352  const AV1RawSequenceHeader *seq = priv->sequence_header;
353  static const uint8_t ref_frame_list[AV1_NUM_REF_FRAMES - 2] = {
356  };
357  int8_t ref_frame_idx[AV1_REFS_PER_FRAME], used_frame[AV1_NUM_REF_FRAMES];
358  int8_t shifted_order_hints[AV1_NUM_REF_FRAMES];
359  int cur_frame_hint, latest_order_hint, earliest_order_hint, ref;
360  int i, j;
361 
362  for (i = 0; i < AV1_REFS_PER_FRAME; i++)
363  ref_frame_idx[i] = -1;
364  ref_frame_idx[AV1_REF_FRAME_LAST - AV1_REF_FRAME_LAST] = current->last_frame_idx;
365  ref_frame_idx[AV1_REF_FRAME_GOLDEN - AV1_REF_FRAME_LAST] = current->golden_frame_idx;
366 
367  for (i = 0; i < AV1_NUM_REF_FRAMES; i++)
368  used_frame[i] = 0;
369  used_frame[current->last_frame_idx] = 1;
370  used_frame[current->golden_frame_idx] = 1;
371 
372  cur_frame_hint = 1 << (seq->order_hint_bits_minus_1);
373  for (i = 0; i < AV1_NUM_REF_FRAMES; i++)
374  shifted_order_hints[i] = cur_frame_hint +
376  priv->order_hint);
377 
378  latest_order_hint = shifted_order_hints[current->last_frame_idx];
379  earliest_order_hint = shifted_order_hints[current->golden_frame_idx];
380 
381  ref = -1;
382  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
383  int hint = shifted_order_hints[i];
384  if (!used_frame[i] && hint >= cur_frame_hint &&
385  (ref < 0 || hint >= latest_order_hint)) {
386  ref = i;
387  latest_order_hint = hint;
388  }
389  }
390  if (ref >= 0) {
391  ref_frame_idx[AV1_REF_FRAME_ALTREF - AV1_REF_FRAME_LAST] = ref;
392  used_frame[ref] = 1;
393  }
394 
395  ref = -1;
396  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
397  int hint = shifted_order_hints[i];
398  if (!used_frame[i] && hint >= cur_frame_hint &&
399  (ref < 0 || hint < earliest_order_hint)) {
400  ref = i;
401  earliest_order_hint = hint;
402  }
403  }
404  if (ref >= 0) {
405  ref_frame_idx[AV1_REF_FRAME_BWDREF - AV1_REF_FRAME_LAST] = ref;
406  used_frame[ref] = 1;
407  }
408 
409  ref = -1;
410  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
411  int hint = shifted_order_hints[i];
412  if (!used_frame[i] && hint >= cur_frame_hint &&
413  (ref < 0 || hint < earliest_order_hint)) {
414  ref = i;
415  earliest_order_hint = hint;
416  }
417  }
418  if (ref >= 0) {
419  ref_frame_idx[AV1_REF_FRAME_ALTREF2 - AV1_REF_FRAME_LAST] = ref;
420  used_frame[ref] = 1;
421  }
422 
423  for (i = 0; i < AV1_REFS_PER_FRAME - 2; i++) {
424  int ref_frame = ref_frame_list[i];
425  if (ref_frame_idx[ref_frame - AV1_REF_FRAME_LAST] < 0 ) {
426  ref = -1;
427  for (j = 0; j < AV1_NUM_REF_FRAMES; j++) {
428  int hint = shifted_order_hints[j];
429  if (!used_frame[j] && hint < cur_frame_hint &&
430  (ref < 0 || hint >= latest_order_hint)) {
431  ref = j;
432  latest_order_hint = hint;
433  }
434  }
435  if (ref >= 0) {
436  ref_frame_idx[ref_frame - AV1_REF_FRAME_LAST] = ref;
437  used_frame[ref] = 1;
438  }
439  }
440  }
441 
442  ref = -1;
443  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
444  int hint = shifted_order_hints[i];
445  if (ref < 0 || hint < earliest_order_hint) {
446  ref = i;
447  earliest_order_hint = hint;
448  }
449  }
450  for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
451  if (ref_frame_idx[i] < 0)
452  ref_frame_idx[i] = ref;
453  infer(ref_frame_idx[i], ref_frame_idx[i]);
454  }
455 
456  return 0;
457 }
458 
460  AV1RawFrameHeader *current)
461 {
463  const AV1RawSequenceHeader *seq = priv->sequence_header;
464  int denom, err;
465 
466  if (seq->enable_superres)
467  flag(use_superres);
468  else
469  infer(use_superres, 0);
470 
471  if (current->use_superres) {
472  fb(3, coded_denom);
473  denom = current->coded_denom + AV1_SUPERRES_DENOM_MIN;
474  } else {
475  denom = AV1_SUPERRES_NUM;
476  }
477 
478  priv->upscaled_width = priv->frame_width;
479  priv->frame_width = (priv->upscaled_width * AV1_SUPERRES_NUM +
480  denom / 2) / denom;
481 
482  return 0;
483 }
484 
486  AV1RawFrameHeader *current)
487 {
489  const AV1RawSequenceHeader *seq = priv->sequence_header;
490  int err;
491 
492  if (current->frame_size_override_flag) {
493  fb(seq->frame_width_bits_minus_1 + 1, frame_width_minus_1);
494  fb(seq->frame_height_bits_minus_1 + 1, frame_height_minus_1);
495  } else {
496  infer(frame_width_minus_1, seq->max_frame_width_minus_1);
497  infer(frame_height_minus_1, seq->max_frame_height_minus_1);
498  }
499 
500  priv->frame_width = current->frame_width_minus_1 + 1;
501  priv->frame_height = current->frame_height_minus_1 + 1;
502 
503  CHECK(FUNC(superres_params)(ctx, rw, current));
504 
505  return 0;
506 }
507 
509  AV1RawFrameHeader *current)
510 {
512  int err;
513 
514  flag(render_and_frame_size_different);
515 
516  if (current->render_and_frame_size_different) {
517  fb(16, render_width_minus_1);
518  fb(16, render_height_minus_1);
519  } else {
520  infer(render_width_minus_1, current->frame_width_minus_1);
521  infer(render_height_minus_1, current->frame_height_minus_1);
522  }
523 
524  priv->render_width = current->render_width_minus_1 + 1;
525  priv->render_height = current->render_height_minus_1 + 1;
526 
527  return 0;
528 }
529 
531  AV1RawFrameHeader *current)
532 {
534  int i, err;
535 
536  for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
537  flags(found_ref[i], 1, i);
538  if (current->found_ref[i]) {
540  &priv->ref[current->ref_frame_idx[i]];
541 
542  if (!ref->valid) {
543  av_log(ctx->log_ctx, AV_LOG_ERROR,
544  "Missing reference frame needed for frame size "
545  "(ref = %d, ref_frame_idx = %d).\n",
546  i, current->ref_frame_idx[i]);
547  return AVERROR_INVALIDDATA;
548  }
549 
550  infer(frame_width_minus_1, ref->upscaled_width - 1);
551  infer(frame_height_minus_1, ref->frame_height - 1);
552  infer(render_width_minus_1, ref->render_width - 1);
553  infer(render_height_minus_1, ref->render_height - 1);
554 
555  priv->upscaled_width = ref->upscaled_width;
556  priv->frame_width = priv->upscaled_width;
557  priv->frame_height = ref->frame_height;
558  priv->render_width = ref->render_width;
559  priv->render_height = ref->render_height;
560  break;
561  }
562  }
563 
564  if (i >= AV1_REFS_PER_FRAME) {
565  CHECK(FUNC(frame_size)(ctx, rw, current));
566  CHECK(FUNC(render_size)(ctx, rw, current));
567  } else {
568  CHECK(FUNC(superres_params)(ctx, rw, current));
569  }
570 
571  return 0;
572 }
573 
575  AV1RawFrameHeader *current)
576 {
577  int err;
578 
579  flag(is_filter_switchable);
580  if (current->is_filter_switchable)
583  else
585 
586  return 0;
587 }
588 
590  AV1RawFrameHeader *current)
591 {
593  const AV1RawSequenceHeader *seq = priv->sequence_header;
594  int mi_cols, mi_rows, sb_cols, sb_rows, sb_shift, sb_size;
595  int max_tile_width_sb, max_tile_height_sb, max_tile_area_sb;
596  int min_log2_tile_cols, max_log2_tile_cols, max_log2_tile_rows;
597  int min_log2_tiles, min_log2_tile_rows;
598  int i, err;
599 
600  mi_cols = 2 * ((priv->frame_width + 7) >> 3);
601  mi_rows = 2 * ((priv->frame_height + 7) >> 3);
602 
603  sb_cols = seq->use_128x128_superblock ? ((mi_cols + 31) >> 5)
604  : ((mi_cols + 15) >> 4);
605  sb_rows = seq->use_128x128_superblock ? ((mi_rows + 31) >> 5)
606  : ((mi_rows + 15) >> 4);
607 
608  sb_shift = seq->use_128x128_superblock ? 5 : 4;
609  sb_size = sb_shift + 2;
610 
611  max_tile_width_sb = AV1_MAX_TILE_WIDTH >> sb_size;
612  max_tile_area_sb = AV1_MAX_TILE_AREA >> (2 * sb_size);
613 
614  min_log2_tile_cols = cbs_av1_tile_log2(max_tile_width_sb, sb_cols);
615  max_log2_tile_cols = cbs_av1_tile_log2(1, FFMIN(sb_cols, AV1_MAX_TILE_COLS));
616  max_log2_tile_rows = cbs_av1_tile_log2(1, FFMIN(sb_rows, AV1_MAX_TILE_ROWS));
617  min_log2_tiles = FFMAX(min_log2_tile_cols,
618  cbs_av1_tile_log2(max_tile_area_sb, sb_rows * sb_cols));
619 
620  flag(uniform_tile_spacing_flag);
621 
622  if (current->uniform_tile_spacing_flag) {
623  int tile_width_sb, tile_height_sb;
624 
625  increment(tile_cols_log2, min_log2_tile_cols, max_log2_tile_cols);
626 
627  tile_width_sb = (sb_cols + (1 << current->tile_cols_log2) - 1) >>
628  current->tile_cols_log2;
629  current->tile_cols = (sb_cols + tile_width_sb - 1) / tile_width_sb;
630 
631  min_log2_tile_rows = FFMAX(min_log2_tiles - current->tile_cols_log2, 0);
632 
633  increment(tile_rows_log2, min_log2_tile_rows, max_log2_tile_rows);
634 
635  tile_height_sb = (sb_rows + (1 << current->tile_rows_log2) - 1) >>
636  current->tile_rows_log2;
637  current->tile_rows = (sb_rows + tile_height_sb - 1) / tile_height_sb;
638 
639  for (i = 0; i < current->tile_cols - 1; i++)
640  infer(width_in_sbs_minus_1[i], tile_width_sb - 1);
641  infer(width_in_sbs_minus_1[i],
642  sb_cols - (current->tile_cols - 1) * tile_width_sb - 1);
643  for (i = 0; i < current->tile_rows - 1; i++)
644  infer(height_in_sbs_minus_1[i], tile_height_sb - 1);
645  infer(height_in_sbs_minus_1[i],
646  sb_rows - (current->tile_rows - 1) * tile_height_sb - 1);
647 
648  } else {
649  int widest_tile_sb, start_sb, size_sb, max_width, max_height;
650 
651  widest_tile_sb = 0;
652 
653  start_sb = 0;
654  for (i = 0; start_sb < sb_cols && i < AV1_MAX_TILE_COLS; i++) {
655  max_width = FFMIN(sb_cols - start_sb, max_tile_width_sb);
656  ns(max_width, width_in_sbs_minus_1[i], 1, i);
657  size_sb = current->width_in_sbs_minus_1[i] + 1;
658  widest_tile_sb = FFMAX(size_sb, widest_tile_sb);
659  start_sb += size_sb;
660  }
661  current->tile_cols_log2 = cbs_av1_tile_log2(1, i);
662  current->tile_cols = i;
663 
664  if (min_log2_tiles > 0)
665  max_tile_area_sb = (sb_rows * sb_cols) >> (min_log2_tiles + 1);
666  else
667  max_tile_area_sb = sb_rows * sb_cols;
668  max_tile_height_sb = FFMAX(max_tile_area_sb / widest_tile_sb, 1);
669 
670  start_sb = 0;
671  for (i = 0; start_sb < sb_rows && i < AV1_MAX_TILE_ROWS; i++) {
672  max_height = FFMIN(sb_rows - start_sb, max_tile_height_sb);
673  ns(max_height, height_in_sbs_minus_1[i], 1, i);
674  size_sb = current->height_in_sbs_minus_1[i] + 1;
675  start_sb += size_sb;
676  }
677  current->tile_rows_log2 = cbs_av1_tile_log2(1, i);
678  current->tile_rows = i;
679  }
680 
681  if (current->tile_cols_log2 > 0 ||
682  current->tile_rows_log2 > 0) {
683  fb(current->tile_cols_log2 + current->tile_rows_log2,
684  context_update_tile_id);
685  fb(2, tile_size_bytes_minus1);
686  } else {
687  infer(context_update_tile_id, 0);
688  }
689 
690  priv->tile_cols = current->tile_cols;
691  priv->tile_rows = current->tile_rows;
692 
693  return 0;
694 }
695 
697  AV1RawFrameHeader *current)
698 {
700  const AV1RawSequenceHeader *seq = priv->sequence_header;
701  int err;
702 
703  fb(8, base_q_idx);
704 
705  delta_q(delta_q_y_dc);
706 
707  if (priv->num_planes > 1) {
709  flag(diff_uv_delta);
710  else
711  infer(diff_uv_delta, 0);
712 
713  delta_q(delta_q_u_dc);
714  delta_q(delta_q_u_ac);
715 
716  if (current->diff_uv_delta) {
717  delta_q(delta_q_v_dc);
718  delta_q(delta_q_v_ac);
719  } else {
720  infer(delta_q_v_dc, current->delta_q_u_dc);
721  infer(delta_q_v_ac, current->delta_q_u_ac);
722  }
723  } else {
724  infer(delta_q_u_dc, 0);
725  infer(delta_q_u_ac, 0);
726  infer(delta_q_v_dc, 0);
727  infer(delta_q_v_ac, 0);
728  }
729 
730  flag(using_qmatrix);
731  if (current->using_qmatrix) {
732  fb(4, qm_y);
733  fb(4, qm_u);
735  fb(4, qm_v);
736  else
737  infer(qm_v, current->qm_u);
738  }
739 
740  return 0;
741 }
742 
744  AV1RawFrameHeader *current)
745 {
747  static const uint8_t bits[AV1_SEG_LVL_MAX] = { 8, 6, 6, 6, 6, 3, 0, 0 };
748  static const uint8_t sign[AV1_SEG_LVL_MAX] = { 1, 1, 1, 1, 1, 0, 0, 0 };
749  static const uint8_t default_feature_enabled[AV1_SEG_LVL_MAX] = { 0 };
750  static const int16_t default_feature_value[AV1_SEG_LVL_MAX] = { 0 };
751  int i, j, err;
752 
753  flag(segmentation_enabled);
754 
755  if (current->segmentation_enabled) {
756  if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
757  infer(segmentation_update_map, 1);
758  infer(segmentation_temporal_update, 0);
759  infer(segmentation_update_data, 1);
760  } else {
761  flag(segmentation_update_map);
762  if (current->segmentation_update_map)
763  flag(segmentation_temporal_update);
764  else
765  infer(segmentation_temporal_update, 0);
766  flag(segmentation_update_data);
767  }
768 
769  for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
770  const uint8_t *ref_feature_enabled;
771  const int16_t *ref_feature_value;
772 
773  if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
774  ref_feature_enabled = default_feature_enabled;
775  ref_feature_value = default_feature_value;
776  } else {
777  ref_feature_enabled =
778  priv->ref[current->ref_frame_idx[current->primary_ref_frame]].feature_enabled[i];
779  ref_feature_value =
780  priv->ref[current->ref_frame_idx[current->primary_ref_frame]].feature_value[i];
781  }
782 
783  for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
784  if (current->segmentation_update_data) {
785  flags(feature_enabled[i][j], 2, i, j);
786 
787  if (current->feature_enabled[i][j] && bits[j] > 0) {
788  if (sign[j])
789  sus(1 + bits[j], feature_value[i][j], 2, i, j);
790  else
791  fbs(bits[j], feature_value[i][j], 2, i, j);
792  } else {
793  infer(feature_value[i][j], 0);
794  }
795  } else {
796  infer(feature_enabled[i][j], ref_feature_enabled[j]);
797  infer(feature_value[i][j], ref_feature_value[j]);
798  }
799  }
800  }
801  } else {
802  for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
803  for (j = 0; j < AV1_SEG_LVL_MAX; j++) {
804  infer(feature_enabled[i][j], 0);
805  infer(feature_value[i][j], 0);
806  }
807  }
808  }
809 
810  return 0;
811 }
812 
814  AV1RawFrameHeader *current)
815 {
816  int err;
817 
818  if (current->base_q_idx > 0)
819  flag(delta_q_present);
820  else
821  infer(delta_q_present, 0);
822 
823  if (current->delta_q_present)
824  fb(2, delta_q_res);
825 
826  return 0;
827 }
828 
830  AV1RawFrameHeader *current)
831 {
832  int err;
833 
834  if (current->delta_q_present) {
835  if (!current->allow_intrabc)
836  flag(delta_lf_present);
837  else
838  infer(delta_lf_present, 0);
839  if (current->delta_lf_present) {
840  fb(2, delta_lf_res);
841  flag(delta_lf_multi);
842  } else {
843  infer(delta_lf_res, 0);
844  infer(delta_lf_multi, 0);
845  }
846  } else {
847  infer(delta_lf_present, 0);
848  infer(delta_lf_res, 0);
849  infer(delta_lf_multi, 0);
850  }
851 
852  return 0;
853 }
854 
856  AV1RawFrameHeader *current)
857 {
859  static const int8_t default_loop_filter_ref_deltas[AV1_TOTAL_REFS_PER_FRAME] =
860  { 1, 0, 0, 0, -1, 0, -1, -1 };
861  static const int8_t default_loop_filter_mode_deltas[2] = { 0, 0 };
862  int i, err;
863 
864  if (priv->coded_lossless || current->allow_intrabc) {
865  infer(loop_filter_level[0], 0);
866  infer(loop_filter_level[1], 0);
867  infer(loop_filter_ref_deltas[AV1_REF_FRAME_INTRA], 1);
868  infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST], 0);
869  infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST2], 0);
870  infer(loop_filter_ref_deltas[AV1_REF_FRAME_LAST3], 0);
871  infer(loop_filter_ref_deltas[AV1_REF_FRAME_BWDREF], 0);
872  infer(loop_filter_ref_deltas[AV1_REF_FRAME_GOLDEN], -1);
873  infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF], -1);
874  infer(loop_filter_ref_deltas[AV1_REF_FRAME_ALTREF2], -1);
875  for (i = 0; i < 2; i++)
876  infer(loop_filter_mode_deltas[i], 0);
877  return 0;
878  }
879 
880  fb(6, loop_filter_level[0]);
881  fb(6, loop_filter_level[1]);
882 
883  if (priv->num_planes > 1) {
884  if (current->loop_filter_level[0] ||
885  current->loop_filter_level[1]) {
886  fb(6, loop_filter_level[2]);
887  fb(6, loop_filter_level[3]);
888  }
889  }
890 
891  fb(3, loop_filter_sharpness);
892 
893  flag(loop_filter_delta_enabled);
894  if (current->loop_filter_delta_enabled) {
895  const int8_t *ref_loop_filter_ref_deltas, *ref_loop_filter_mode_deltas;
896 
897  if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
898  ref_loop_filter_ref_deltas = default_loop_filter_ref_deltas;
899  ref_loop_filter_mode_deltas = default_loop_filter_mode_deltas;
900  } else {
901  ref_loop_filter_ref_deltas =
902  priv->ref[current->ref_frame_idx[current->primary_ref_frame]].loop_filter_ref_deltas;
903  ref_loop_filter_mode_deltas =
904  priv->ref[current->ref_frame_idx[current->primary_ref_frame]].loop_filter_mode_deltas;
905  }
906 
907  flag(loop_filter_delta_update);
908  for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++) {
909  if (current->loop_filter_delta_update)
910  flags(update_ref_delta[i], 1, i);
911  else
912  infer(update_ref_delta[i], 0);
913  if (current->update_ref_delta[i])
914  sus(1 + 6, loop_filter_ref_deltas[i], 1, i);
915  else
916  infer(loop_filter_ref_deltas[i], ref_loop_filter_ref_deltas[i]);
917  }
918  for (i = 0; i < 2; i++) {
919  if (current->loop_filter_delta_update)
920  flags(update_mode_delta[i], 1, i);
921  else
922  infer(update_mode_delta[i], 0);
923  if (current->update_mode_delta[i])
924  sus(1 + 6, loop_filter_mode_deltas[i], 1, i);
925  else
926  infer(loop_filter_mode_deltas[i], ref_loop_filter_mode_deltas[i]);
927  }
928  } else {
929  for (i = 0; i < AV1_TOTAL_REFS_PER_FRAME; i++)
930  infer(loop_filter_ref_deltas[i], default_loop_filter_ref_deltas[i]);
931  for (i = 0; i < 2; i++)
932  infer(loop_filter_mode_deltas[i], default_loop_filter_mode_deltas[i]);
933  }
934 
935  return 0;
936 }
937 
939  AV1RawFrameHeader *current)
940 {
942  const AV1RawSequenceHeader *seq = priv->sequence_header;
943  int i, err;
944 
945  if (priv->coded_lossless || current->allow_intrabc ||
946  !seq->enable_cdef) {
947  infer(cdef_damping_minus_3, 0);
948  infer(cdef_bits, 0);
949  infer(cdef_y_pri_strength[0], 0);
950  infer(cdef_y_sec_strength[0], 0);
951  infer(cdef_uv_pri_strength[0], 0);
952  infer(cdef_uv_sec_strength[0], 0);
953 
954  return 0;
955  }
956 
957  fb(2, cdef_damping_minus_3);
958  fb(2, cdef_bits);
959 
960  for (i = 0; i < (1 << current->cdef_bits); i++) {
961  fbs(4, cdef_y_pri_strength[i], 1, i);
962  fbs(2, cdef_y_sec_strength[i], 1, i);
963 
964  if (priv->num_planes > 1) {
965  fbs(4, cdef_uv_pri_strength[i], 1, i);
966  fbs(2, cdef_uv_sec_strength[i], 1, i);
967  }
968  }
969 
970  return 0;
971 }
972 
974  AV1RawFrameHeader *current)
975 {
977  const AV1RawSequenceHeader *seq = priv->sequence_header;
978  int uses_lr, uses_chroma_lr;
979  int i, err;
980 
981  if (priv->all_lossless || current->allow_intrabc ||
982  !seq->enable_restoration) {
983  return 0;
984  }
985 
986  uses_lr = uses_chroma_lr = 0;
987  for (i = 0; i < priv->num_planes; i++) {
988  fbs(2, lr_type[i], 1, i);
989 
990  if (current->lr_type[i] != AV1_RESTORE_NONE) {
991  uses_lr = 1;
992  if (i > 0)
993  uses_chroma_lr = 1;
994  }
995  }
996 
997  if (uses_lr) {
998  if (seq->use_128x128_superblock)
999  increment(lr_unit_shift, 1, 2);
1000  else
1001  increment(lr_unit_shift, 0, 2);
1002 
1003  if(seq->color_config.subsampling_x &&
1004  seq->color_config.subsampling_y && uses_chroma_lr) {
1005  fb(1, lr_uv_shift);
1006  } else {
1007  infer(lr_uv_shift, 0);
1008  }
1009  }
1010 
1011  return 0;
1012 }
1013 
1015  AV1RawFrameHeader *current)
1016 {
1018  int err;
1019 
1020  if (priv->coded_lossless)
1021  infer(tx_mode, 0);
1022  else
1023  increment(tx_mode, 1, 2);
1024 
1025  return 0;
1026 }
1027 
1029  AV1RawFrameHeader *current)
1030 {
1031  int err;
1032 
1033  if (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1034  current->frame_type == AV1_FRAME_KEY)
1035  infer(reference_select, 0);
1036  else
1037  flag(reference_select);
1038 
1039  return 0;
1040 }
1041 
1043  AV1RawFrameHeader *current)
1044 {
1046  const AV1RawSequenceHeader *seq = priv->sequence_header;
1047  int skip_mode_allowed;
1048  int err;
1049 
1050  if (current->frame_type == AV1_FRAME_KEY ||
1051  current->frame_type == AV1_FRAME_INTRA_ONLY ||
1052  !current->reference_select || !seq->enable_order_hint) {
1053  skip_mode_allowed = 0;
1054  } else {
1055  int forward_idx, backward_idx;
1056  int forward_hint, backward_hint;
1057  int ref_hint, dist, i;
1058 
1059  forward_idx = -1;
1060  backward_idx = -1;
1061  for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1062  ref_hint = priv->ref[current->ref_frame_idx[i]].order_hint;
1063  dist = cbs_av1_get_relative_dist(seq, ref_hint,
1064  priv->order_hint);
1065  if (dist < 0) {
1066  if (forward_idx < 0 ||
1067  cbs_av1_get_relative_dist(seq, ref_hint,
1068  forward_hint) > 0) {
1069  forward_idx = i;
1070  forward_hint = ref_hint;
1071  }
1072  } else if (dist > 0) {
1073  if (backward_idx < 0 ||
1074  cbs_av1_get_relative_dist(seq, ref_hint,
1075  backward_hint) < 0) {
1076  backward_idx = i;
1077  backward_hint = ref_hint;
1078  }
1079  }
1080  }
1081 
1082  if (forward_idx < 0) {
1083  skip_mode_allowed = 0;
1084  } else if (backward_idx >= 0) {
1085  skip_mode_allowed = 1;
1086  // Frames for skip mode are forward_idx and backward_idx.
1087  } else {
1088  int second_forward_idx;
1089  int second_forward_hint;
1090 
1091  second_forward_idx = -1;
1092  for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1093  ref_hint = priv->ref[current->ref_frame_idx[i]].order_hint;
1094  if (cbs_av1_get_relative_dist(seq, ref_hint,
1095  forward_hint) < 0) {
1096  if (second_forward_idx < 0 ||
1097  cbs_av1_get_relative_dist(seq, ref_hint,
1098  second_forward_hint) > 0) {
1099  second_forward_idx = i;
1100  second_forward_hint = ref_hint;
1101  }
1102  }
1103  }
1104 
1105  if (second_forward_idx < 0) {
1106  skip_mode_allowed = 0;
1107  } else {
1108  skip_mode_allowed = 1;
1109  // Frames for skip mode are forward_idx and second_forward_idx.
1110  }
1111  }
1112  }
1113 
1114  if (skip_mode_allowed)
1115  flag(skip_mode_present);
1116  else
1117  infer(skip_mode_present, 0);
1118 
1119  return 0;
1120 }
1121 
1123  AV1RawFrameHeader *current,
1124  int type, int ref, int idx)
1125 {
1126  uint32_t abs_bits, prec_bits, num_syms;
1127  int err;
1128 
1129  if (idx < 2) {
1131  abs_bits = AV1_GM_ABS_TRANS_ONLY_BITS - !current->allow_high_precision_mv;
1132  prec_bits = AV1_GM_TRANS_ONLY_PREC_BITS - !current->allow_high_precision_mv;
1133  } else {
1134  abs_bits = AV1_GM_ABS_TRANS_BITS;
1135  prec_bits = AV1_GM_TRANS_PREC_BITS;
1136  }
1137  } else {
1138  abs_bits = AV1_GM_ABS_ALPHA_BITS;
1139  prec_bits = AV1_GM_ALPHA_PREC_BITS;
1140  }
1141 
1142  num_syms = 2 * (1 << abs_bits) + 1;
1143  subexp(gm_params[ref][idx], num_syms, 2, ref, idx);
1144 
1145  // Actual gm_params value is not reconstructed here.
1146  (void)prec_bits;
1147 
1148  return 0;
1149 }
1150 
1152  AV1RawFrameHeader *current)
1153 {
1154  int ref, type;
1155  int err;
1156 
1157  if (current->frame_type == AV1_FRAME_KEY ||
1158  current->frame_type == AV1_FRAME_INTRA_ONLY)
1159  return 0;
1160 
1162  flags(is_global[ref], 1, ref);
1163  if (current->is_global[ref]) {
1164  flags(is_rot_zoom[ref], 1, ref);
1165  if (current->is_rot_zoom[ref]) {
1167  } else {
1168  flags(is_translation[ref], 1, ref);
1169  type = current->is_translation[ref] ? AV1_WARP_MODEL_TRANSLATION
1171  }
1172  } else {
1174  }
1175 
1176  if (type >= AV1_WARP_MODEL_ROTZOOM) {
1177  CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 2));
1178  CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 3));
1179  if (type == AV1_WARP_MODEL_AFFINE) {
1180  CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 4));
1181  CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 5));
1182  } else {
1183  // gm_params[ref][4] = -gm_params[ref][3]
1184  // gm_params[ref][5] = gm_params[ref][2]
1185  }
1186  }
1188  CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 0));
1189  CHECK(FUNC(global_motion_param)(ctx, rw, current, type, ref, 1));
1190  }
1191  }
1192 
1193  return 0;
1194 }
1195 
1197  AV1RawFilmGrainParams *current,
1199 {
1201  const AV1RawSequenceHeader *seq = priv->sequence_header;
1202  int num_pos_luma, num_pos_chroma;
1203  int i, err;
1204 
1205  if (!seq->film_grain_params_present ||
1206  (!frame_header->show_frame && !frame_header->showable_frame))
1207  return 0;
1208 
1209  flag(apply_grain);
1210 
1211  if (!current->apply_grain)
1212  return 0;
1213 
1214  fb(16, grain_seed);
1215 
1216  if (frame_header->frame_type == AV1_FRAME_INTER)
1217  flag(update_grain);
1218  else
1219  infer(update_grain, 1);
1220 
1221  if (!current->update_grain) {
1222  fb(3, film_grain_params_ref_idx);
1223  return 0;
1224  }
1225 
1226  fc(4, num_y_points, 0, 14);
1227  for (i = 0; i < current->num_y_points; i++) {
1228  fcs(8, point_y_value[i],
1229  i ? current->point_y_value[i - 1] + 1 : 0,
1230  MAX_UINT_BITS(8) - (current->num_y_points - i - 1),
1231  1, i);
1232  fbs(8, point_y_scaling[i], 1, i);
1233  }
1234 
1235  if (seq->color_config.mono_chrome)
1236  infer(chroma_scaling_from_luma, 0);
1237  else
1238  flag(chroma_scaling_from_luma);
1239 
1240  if (seq->color_config.mono_chrome ||
1241  current->chroma_scaling_from_luma ||
1242  (seq->color_config.subsampling_x == 1 &&
1243  seq->color_config.subsampling_y == 1 &&
1244  current->num_y_points == 0)) {
1245  infer(num_cb_points, 0);
1246  infer(num_cr_points, 0);
1247  } else {
1248  fc(4, num_cb_points, 0, 10);
1249  for (i = 0; i < current->num_cb_points; i++) {
1250  fcs(8, point_cb_value[i],
1251  i ? current->point_cb_value[i - 1] + 1 : 0,
1252  MAX_UINT_BITS(8) - (current->num_cb_points - i - 1),
1253  1, i);
1254  fbs(8, point_cb_scaling[i], 1, i);
1255  }
1256  fc(4, num_cr_points, 0, 10);
1257  for (i = 0; i < current->num_cr_points; i++) {
1258  fcs(8, point_cr_value[i],
1259  i ? current->point_cr_value[i - 1] + 1 : 0,
1260  MAX_UINT_BITS(8) - (current->num_cr_points - i - 1),
1261  1, i);
1262  fbs(8, point_cr_scaling[i], 1, i);
1263  }
1264  }
1265 
1266  fb(2, grain_scaling_minus_8);
1267  fb(2, ar_coeff_lag);
1268  num_pos_luma = 2 * current->ar_coeff_lag * (current->ar_coeff_lag + 1);
1269  if (current->num_y_points) {
1270  num_pos_chroma = num_pos_luma + 1;
1271  for (i = 0; i < num_pos_luma; i++)
1272  fbs(8, ar_coeffs_y_plus_128[i], 1, i);
1273  } else {
1274  num_pos_chroma = num_pos_luma;
1275  }
1276  if (current->chroma_scaling_from_luma || current->num_cb_points) {
1277  for (i = 0; i < num_pos_chroma; i++)
1278  fbs(8, ar_coeffs_cb_plus_128[i], 1, i);
1279  }
1280  if (current->chroma_scaling_from_luma || current->num_cr_points) {
1281  for (i = 0; i < num_pos_chroma; i++)
1282  fbs(8, ar_coeffs_cr_plus_128[i], 1, i);
1283  }
1284  fb(2, ar_coeff_shift_minus_6);
1285  fb(2, grain_scale_shift);
1286  if (current->num_cb_points) {
1287  fb(8, cb_mult);
1288  fb(8, cb_luma_mult);
1289  fb(9, cb_offset);
1290  }
1291  if (current->num_cr_points) {
1292  fb(8, cr_mult);
1293  fb(8, cr_luma_mult);
1294  fb(9, cr_offset);
1295  }
1296 
1297  flag(overlap_flag);
1298  flag(clip_to_restricted_range);
1299 
1300  return 0;
1301 }
1302 
1304  AV1RawFrameHeader *current)
1305 {
1307  const AV1RawSequenceHeader *seq;
1308  int id_len, diff_len, all_frames, frame_is_intra, order_hint_bits;
1309  int i, err;
1310 
1311  if (!priv->sequence_header) {
1312  av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1313  "unable to decode frame header.\n");
1314  return AVERROR_INVALIDDATA;
1315  }
1316  seq = priv->sequence_header;
1317 
1318  id_len = seq->additional_frame_id_length_minus_1 +
1320  all_frames = (1 << AV1_NUM_REF_FRAMES) - 1;
1321 
1322  if (seq->reduced_still_picture_header) {
1323  infer(show_existing_frame, 0);
1325  infer(show_frame, 1);
1326  infer(showable_frame, 0);
1327  frame_is_intra = 1;
1328 
1329  } else {
1330  flag(show_existing_frame);
1331 
1332  if (current->show_existing_frame) {
1334 
1335  fb(3, frame_to_show_map_idx);
1336  ref = &priv->ref[current->frame_to_show_map_idx];
1337 
1338  if (!ref->valid) {
1339  av_log(ctx->log_ctx, AV_LOG_ERROR, "Missing reference frame needed for "
1340  "show_existing_frame (frame_to_show_map_idx = %d).\n",
1341  current->frame_to_show_map_idx);
1342  return AVERROR_INVALIDDATA;
1343  }
1344 
1348  frame_presentation_time);
1349  }
1350 
1352  fb(id_len, display_frame_id);
1353 
1354  infer(frame_type, ref->frame_type);
1355  if (current->frame_type == AV1_FRAME_KEY) {
1356  infer(refresh_frame_flags, all_frames);
1357 
1358  // Section 7.21
1359  infer(current_frame_id, ref->frame_id);
1360  priv->upscaled_width = ref->upscaled_width;
1361  priv->frame_width = ref->frame_width;
1362  priv->frame_height = ref->frame_height;
1363  priv->render_width = ref->render_width;
1364  priv->render_height = ref->render_height;
1365  priv->bit_depth = ref->bit_depth;
1366  priv->order_hint = ref->order_hint;
1367  } else
1368  infer(refresh_frame_flags, 0);
1369 
1370  infer(frame_width_minus_1, ref->upscaled_width - 1);
1371  infer(frame_height_minus_1, ref->frame_height - 1);
1372  infer(render_width_minus_1, ref->render_width - 1);
1373  infer(render_height_minus_1, ref->render_height - 1);
1374 
1375  // Section 7.20
1376  goto update_refs;
1377  }
1378 
1379  fb(2, frame_type);
1380  frame_is_intra = (current->frame_type == AV1_FRAME_INTRA_ONLY ||
1381  current->frame_type == AV1_FRAME_KEY);
1382 
1383  flag(show_frame);
1384  if (current->show_frame &&
1388  frame_presentation_time);
1389  }
1390  if (current->show_frame)
1391  infer(showable_frame, current->frame_type != AV1_FRAME_KEY);
1392  else
1393  flag(showable_frame);
1394 
1395  if (current->frame_type == AV1_FRAME_SWITCH ||
1396  (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1397  infer(error_resilient_mode, 1);
1398  else
1399  flag(error_resilient_mode);
1400  }
1401 
1402  if (current->frame_type == AV1_FRAME_KEY && current->show_frame) {
1403  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1404  priv->ref[i].valid = 0;
1405  priv->ref[i].order_hint = 0;
1406  }
1407  }
1408 
1409  flag(disable_cdf_update);
1410 
1411  if (seq->seq_force_screen_content_tools ==
1413  flag(allow_screen_content_tools);
1414  } else {
1415  infer(allow_screen_content_tools,
1417  }
1418  if (current->allow_screen_content_tools) {
1420  flag(force_integer_mv);
1421  else
1422  infer(force_integer_mv, seq->seq_force_integer_mv);
1423  } else {
1424  infer(force_integer_mv, 0);
1425  }
1426 
1427  if (seq->frame_id_numbers_present_flag) {
1428  fb(id_len, current_frame_id);
1429 
1430  diff_len = seq->delta_frame_id_length_minus_2 + 2;
1431  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1432  if (current->current_frame_id > (1 << diff_len)) {
1433  if (priv->ref[i].frame_id > current->current_frame_id ||
1434  priv->ref[i].frame_id < (current->current_frame_id -
1435  (1 << diff_len)))
1436  priv->ref[i].valid = 0;
1437  } else {
1438  if (priv->ref[i].frame_id > current->current_frame_id &&
1439  priv->ref[i].frame_id < ((1 << id_len) +
1440  current->current_frame_id -
1441  (1 << diff_len)))
1442  priv->ref[i].valid = 0;
1443  }
1444  }
1445  } else {
1446  infer(current_frame_id, 0);
1447  }
1448 
1449  if (current->frame_type == AV1_FRAME_SWITCH)
1450  infer(frame_size_override_flag, 1);
1451  else if(seq->reduced_still_picture_header)
1452  infer(frame_size_override_flag, 0);
1453  else
1454  flag(frame_size_override_flag);
1455 
1456  order_hint_bits =
1457  seq->enable_order_hint ? seq->order_hint_bits_minus_1 + 1 : 0;
1458  if (order_hint_bits > 0)
1459  fb(order_hint_bits, order_hint);
1460  else
1461  infer(order_hint, 0);
1462  priv->order_hint = current->order_hint;
1463 
1464  if (frame_is_intra || current->error_resilient_mode)
1465  infer(primary_ref_frame, AV1_PRIMARY_REF_NONE);
1466  else
1467  fb(3, primary_ref_frame);
1468 
1470  flag(buffer_removal_time_present_flag);
1471  if (current->buffer_removal_time_present_flag) {
1472  for (i = 0; i <= seq->operating_points_cnt_minus_1; i++) {
1474  int op_pt_idc = seq->operating_point_idc[i];
1475  int in_temporal_layer = (op_pt_idc >> priv->temporal_id ) & 1;
1476  int in_spatial_layer = (op_pt_idc >> (priv->spatial_id + 8)) & 1;
1477  if (seq->operating_point_idc[i] == 0 ||
1478  (in_temporal_layer && in_spatial_layer)) {
1480  buffer_removal_time[i], 1, i);
1481  }
1482  }
1483  }
1484  }
1485  }
1486 
1487  if (current->frame_type == AV1_FRAME_SWITCH ||
1488  (current->frame_type == AV1_FRAME_KEY && current->show_frame))
1489  infer(refresh_frame_flags, all_frames);
1490  else
1491  fb(8, refresh_frame_flags);
1492 
1493  if (!frame_is_intra || current->refresh_frame_flags != all_frames) {
1494  if (seq->enable_order_hint) {
1495  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1496  if (current->error_resilient_mode)
1497  fbs(order_hint_bits, ref_order_hint[i], 1, i);
1498  else
1499  infer(ref_order_hint[i], priv->ref[i].order_hint);
1500  if (current->ref_order_hint[i] != priv->ref[i].order_hint)
1501  priv->ref[i].valid = 0;
1502  }
1503  }
1504  }
1505 
1506  if (current->frame_type == AV1_FRAME_KEY ||
1507  current->frame_type == AV1_FRAME_INTRA_ONLY) {
1508  CHECK(FUNC(frame_size)(ctx, rw, current));
1509  CHECK(FUNC(render_size)(ctx, rw, current));
1510 
1511  if (current->allow_screen_content_tools &&
1512  priv->upscaled_width == priv->frame_width)
1513  flag(allow_intrabc);
1514  else
1515  infer(allow_intrabc, 0);
1516 
1517  } else {
1518  if (!seq->enable_order_hint) {
1519  infer(frame_refs_short_signaling, 0);
1520  } else {
1521  flag(frame_refs_short_signaling);
1522  if (current->frame_refs_short_signaling) {
1523  fb(3, last_frame_idx);
1524  fb(3, golden_frame_idx);
1525  CHECK(FUNC(set_frame_refs)(ctx, rw, current));
1526  }
1527  }
1528 
1529  for (i = 0; i < AV1_REFS_PER_FRAME; i++) {
1530  if (!current->frame_refs_short_signaling)
1531  fbs(3, ref_frame_idx[i], 1, i);
1532  if (seq->frame_id_numbers_present_flag) {
1534  delta_frame_id_minus1[i], 1, i);
1535  }
1536  }
1537 
1538  if (current->frame_size_override_flag &&
1539  !current->error_resilient_mode) {
1540  CHECK(FUNC(frame_size_with_refs)(ctx, rw, current));
1541  } else {
1542  CHECK(FUNC(frame_size)(ctx, rw, current));
1543  CHECK(FUNC(render_size)(ctx, rw, current));
1544  }
1545 
1546  if (current->force_integer_mv)
1547  infer(allow_high_precision_mv, 0);
1548  else
1549  flag(allow_high_precision_mv);
1550 
1551  CHECK(FUNC(interpolation_filter)(ctx, rw, current));
1552 
1553  flag(is_motion_mode_switchable);
1554 
1555  if (current->error_resilient_mode ||
1556  !seq->enable_ref_frame_mvs)
1557  infer(use_ref_frame_mvs, 0);
1558  else
1559  flag(use_ref_frame_mvs);
1560 
1561  infer(allow_intrabc, 0);
1562  }
1563 
1564  if (!frame_is_intra) {
1565  // Derive reference frame sign biases.
1566  }
1567 
1568  if (seq->reduced_still_picture_header || current->disable_cdf_update)
1569  infer(disable_frame_end_update_cdf, 1);
1570  else
1571  flag(disable_frame_end_update_cdf);
1572 
1573  if (current->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
1574  // Init non-coeff CDFs.
1575  // Setup past independence.
1576  } else {
1577  // Load CDF tables from previous frame.
1578  // Load params from previous frame.
1579  }
1580 
1581  if (current->use_ref_frame_mvs) {
1582  // Perform motion field estimation process.
1583  }
1584 
1585  CHECK(FUNC(tile_info)(ctx, rw, current));
1586 
1587  CHECK(FUNC(quantization_params)(ctx, rw, current));
1588 
1589  CHECK(FUNC(segmentation_params)(ctx, rw, current));
1590 
1591  CHECK(FUNC(delta_q_params)(ctx, rw, current));
1592 
1593  CHECK(FUNC(delta_lf_params)(ctx, rw, current));
1594 
1595  // Init coeff CDFs / load previous segments.
1596 
1597  priv->coded_lossless = 1;
1598  for (i = 0; i < AV1_MAX_SEGMENTS; i++) {
1599  int qindex;
1600  if (current->feature_enabled[i][AV1_SEG_LVL_ALT_Q]) {
1601  qindex = (current->base_q_idx +
1602  current->feature_value[i][AV1_SEG_LVL_ALT_Q]);
1603  } else {
1604  qindex = current->base_q_idx;
1605  }
1606  qindex = av_clip_uintp2(qindex, 8);
1607 
1608  if (qindex || current->delta_q_y_dc ||
1609  current->delta_q_u_ac || current->delta_q_u_dc ||
1610  current->delta_q_v_ac || current->delta_q_v_dc) {
1611  priv->coded_lossless = 0;
1612  }
1613  }
1614  priv->all_lossless = priv->coded_lossless &&
1615  priv->frame_width == priv->upscaled_width;
1616 
1617  CHECK(FUNC(loop_filter_params)(ctx, rw, current));
1618 
1619  CHECK(FUNC(cdef_params)(ctx, rw, current));
1620 
1621  CHECK(FUNC(lr_params)(ctx, rw, current));
1622 
1623  CHECK(FUNC(read_tx_mode)(ctx, rw, current));
1624 
1625  CHECK(FUNC(frame_reference_mode)(ctx, rw, current));
1626 
1627  CHECK(FUNC(skip_mode_params)(ctx, rw, current));
1628 
1629  if (frame_is_intra || current->error_resilient_mode ||
1630  !seq->enable_warped_motion)
1631  infer(allow_warped_motion, 0);
1632  else
1633  flag(allow_warped_motion);
1634 
1635  flag(reduced_tx_set);
1636 
1637  CHECK(FUNC(global_motion_params)(ctx, rw, current));
1638 
1639  CHECK(FUNC(film_grain_params)(ctx, rw, &current->film_grain, current));
1640 
1641  av_log(ctx->log_ctx, AV_LOG_DEBUG, "Frame %d: size %dx%d "
1642  "upscaled %d render %dx%d subsample %dx%d "
1643  "bitdepth %d tiles %dx%d.\n", priv->order_hint,
1644  priv->frame_width, priv->frame_height, priv->upscaled_width,
1645  priv->render_width, priv->render_height,
1646  seq->color_config.subsampling_x + 1,
1647  seq->color_config.subsampling_y + 1, priv->bit_depth,
1648  priv->tile_rows, priv->tile_cols);
1649 
1650 update_refs:
1651  for (i = 0; i < AV1_NUM_REF_FRAMES; i++) {
1652  if (current->refresh_frame_flags & (1 << i)) {
1653  priv->ref[i] = (AV1ReferenceFrameState) {
1654  .valid = 1,
1655  .frame_id = current->current_frame_id,
1656  .upscaled_width = priv->upscaled_width,
1657  .frame_width = priv->frame_width,
1658  .frame_height = priv->frame_height,
1659  .render_width = priv->render_width,
1660  .render_height = priv->render_height,
1661  .frame_type = current->frame_type,
1662  .subsampling_x = seq->color_config.subsampling_x,
1663  .subsampling_y = seq->color_config.subsampling_y,
1664  .bit_depth = priv->bit_depth,
1665  .order_hint = priv->order_hint,
1666  };
1667  memcpy(priv->ref[i].loop_filter_ref_deltas, current->loop_filter_ref_deltas,
1668  sizeof(current->loop_filter_ref_deltas));
1669  memcpy(priv->ref[i].loop_filter_mode_deltas, current->loop_filter_mode_deltas,
1670  sizeof(current->loop_filter_mode_deltas));
1671  memcpy(priv->ref[i].feature_enabled, current->feature_enabled,
1672  sizeof(current->feature_enabled));
1673  memcpy(priv->ref[i].feature_value, current->feature_value,
1674  sizeof(current->feature_value));
1675  }
1676  }
1677 
1678  return 0;
1679 }
1680 
1682  AV1RawFrameHeader *current, int redundant,
1683  AVBufferRef *rw_buffer_ref)
1684 {
1686  int start_pos, fh_bits, fh_bytes, err;
1687  uint8_t *fh_start;
1688 
1689  if (priv->seen_frame_header) {
1690  if (!redundant) {
1691  av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid repeated "
1692  "frame header OBU.\n");
1693  return AVERROR_INVALIDDATA;
1694  } else {
1695  GetBitContext fh;
1696  size_t i, b;
1697  uint32_t val;
1698 
1699  HEADER("Redundant Frame Header");
1700 
1701  av_assert0(priv->frame_header_ref && priv->frame_header);
1702 
1703  init_get_bits(&fh, priv->frame_header,
1704  priv->frame_header_size);
1705  for (i = 0; i < priv->frame_header_size; i += 8) {
1706  b = FFMIN(priv->frame_header_size - i, 8);
1707  val = get_bits(&fh, b);
1708  xf(b, frame_header_copy[i],
1709  val, val, val, 1, i / 8);
1710  }
1711  }
1712  } else {
1713  if (redundant)
1714  HEADER("Redundant Frame Header (used as Frame Header)");
1715  else
1716  HEADER("Frame Header");
1717 
1718 #ifdef READ
1719  start_pos = get_bits_count(rw);
1720 #else
1721  start_pos = put_bits_count(rw);
1722 #endif
1723 
1724  CHECK(FUNC(uncompressed_header)(ctx, rw, current));
1725 
1726  priv->tile_num = 0;
1727 
1728  if (current->show_existing_frame) {
1729  priv->seen_frame_header = 0;
1730  } else {
1731  priv->seen_frame_header = 1;
1732 
1734 
1735 #ifdef READ
1736  fh_bits = get_bits_count(rw) - start_pos;
1737  fh_start = (uint8_t*)rw->buffer + start_pos / 8;
1738 #else
1739  // Need to flush the bitwriter so that we can copy its output,
1740  // but use a copy so we don't affect the caller's structure.
1741  {
1742  PutBitContext tmp = *rw;
1743  flush_put_bits(&tmp);
1744  }
1745 
1746  fh_bits = put_bits_count(rw) - start_pos;
1747  fh_start = rw->buf + start_pos / 8;
1748 #endif
1749  fh_bytes = (fh_bits + 7) / 8;
1750 
1751  priv->frame_header_size = fh_bits;
1752 
1753  if (rw_buffer_ref) {
1754  priv->frame_header_ref = av_buffer_ref(rw_buffer_ref);
1755  if (!priv->frame_header_ref)
1756  return AVERROR(ENOMEM);
1757  priv->frame_header = fh_start;
1758  } else {
1759  priv->frame_header_ref =
1761  if (!priv->frame_header_ref)
1762  return AVERROR(ENOMEM);
1763  priv->frame_header = priv->frame_header_ref->data;
1764  memcpy(priv->frame_header, fh_start, fh_bytes);
1765  }
1766  }
1767  }
1768 
1769  return 0;
1770 }
1771 
1773  AV1RawTileGroup *current)
1774 {
1776  int num_tiles, tile_bits;
1777  int err;
1778 
1779  HEADER("Tile Group");
1780 
1781  num_tiles = priv->tile_cols * priv->tile_rows;
1782  if (num_tiles > 1)
1783  flag(tile_start_and_end_present_flag);
1784  else
1785  infer(tile_start_and_end_present_flag, 0);
1786 
1787  if (num_tiles == 1 || !current->tile_start_and_end_present_flag) {
1788  infer(tg_start, 0);
1789  infer(tg_end, num_tiles - 1);
1790  } else {
1791  tile_bits = cbs_av1_tile_log2(1, priv->tile_cols) +
1792  cbs_av1_tile_log2(1, priv->tile_rows);
1793  fc(tile_bits, tg_start, priv->tile_num, num_tiles - 1);
1794  fc(tile_bits, tg_end, current->tg_start, num_tiles - 1);
1795  }
1796 
1797  priv->tile_num = current->tg_end + 1;
1798 
1799  CHECK(FUNC(byte_alignment)(ctx, rw));
1800 
1801  // Reset header for next frame.
1802  if (current->tg_end == num_tiles - 1)
1803  priv->seen_frame_header = 0;
1804 
1805  // Tile data follows.
1806 
1807  return 0;
1808 }
1809 
1811  AV1RawFrame *current,
1812  AVBufferRef *rw_buffer_ref)
1813 {
1814  int err;
1815 
1816  CHECK(FUNC(frame_header_obu)(ctx, rw, &current->header,
1817  0, rw_buffer_ref));
1818 
1819  CHECK(FUNC(byte_alignment)(ctx, rw));
1820 
1821  CHECK(FUNC(tile_group_obu)(ctx, rw, &current->tile_group));
1822 
1823  return 0;
1824 }
1825 
1827  AV1RawTileList *current)
1828 {
1829  int err;
1830 
1831  fb(8, output_frame_width_in_tiles_minus_1);
1832  fb(8, output_frame_height_in_tiles_minus_1);
1833 
1834  fb(16, tile_count_minus_1);
1835 
1836  // Tile data follows.
1837 
1838  return 0;
1839 }
1840 
1842  AV1RawMetadataHDRCLL *current)
1843 {
1844  int err;
1845 
1846  fb(16, max_cll);
1847  fb(16, max_fall);
1848 
1849  return 0;
1850 }
1851 
1853  AV1RawMetadataHDRMDCV *current)
1854 {
1855  int err, i;
1856 
1857  for (i = 0; i < 3; i++) {
1858  fbs(16, primary_chromaticity_x[i], 1, i);
1859  fbs(16, primary_chromaticity_y[i], 1, i);
1860  }
1861 
1862  fb(16, white_point_chromaticity_x);
1863  fb(16, white_point_chromaticity_y);
1864 
1865  fc(32, luminance_max, 1, MAX_UINT_BITS(32));
1866  // luminance_min must be lower than luminance_max. Convert luminance_max from
1867  // 24.8 fixed point to 18.14 fixed point in order to compare them.
1868  fc(32, luminance_min, 0, FFMIN(((uint64_t)current->luminance_max << 6) - 1,
1869  MAX_UINT_BITS(32)));
1870 
1871  return 0;
1872 }
1873 
1875  AV1RawMetadataScalability *current)
1876 {
1878  const AV1RawSequenceHeader *seq;
1879  int err, i, j;
1880 
1881  if (!priv->sequence_header) {
1882  av_log(ctx->log_ctx, AV_LOG_ERROR, "No sequence header available: "
1883  "unable to parse scalability metadata.\n");
1884  return AVERROR_INVALIDDATA;
1885  }
1886  seq = priv->sequence_header;
1887 
1888  fb(2, spatial_layers_cnt_minus_1);
1889  flag(spatial_layer_dimensions_present_flag);
1890  flag(spatial_layer_description_present_flag);
1891  flag(temporal_group_description_present_flag);
1892  fc(3, scalability_structure_reserved_3bits, 0, 0);
1893  if (current->spatial_layer_dimensions_present_flag) {
1894  for (i = 0; i <= current->spatial_layers_cnt_minus_1; i++) {
1895  fcs(16, spatial_layer_max_width[i],
1896  0, seq->max_frame_width_minus_1 + 1, 1, i);
1897  fcs(16, spatial_layer_max_height[i],
1898  0, seq->max_frame_height_minus_1 + 1, 1, i);
1899  }
1900  }
1901  if (current->spatial_layer_description_present_flag) {
1902  for (i = 0; i <= current->spatial_layers_cnt_minus_1; i++)
1903  fbs(8, spatial_layer_ref_id[i], 1, i);
1904  }
1905  if (current->temporal_group_description_present_flag) {
1906  fb(8, temporal_group_size);
1907  for (i = 0; i < current->temporal_group_size; i++) {
1908  fbs(3, temporal_group_temporal_id[i], 1, i);
1909  flags(temporal_group_temporal_switching_up_point_flag[i], 1, i);
1910  flags(temporal_group_spatial_switching_up_point_flag[i], 1, i);
1911  fbs(3, temporal_group_ref_cnt[i], 1, i);
1912  for (j = 0; j < current->temporal_group_ref_cnt[i]; j++) {
1913  fbs(8, temporal_group_ref_pic_diff[i][j], 2, i, j);
1914  }
1915  }
1916  }
1917 
1918  return 0;
1919 }
1920 
1922  AV1RawMetadataScalability *current)
1923 {
1924  int err;
1925 
1926  fb(8, scalability_mode_idc);
1927 
1928  if (current->scalability_mode_idc == AV1_SCALABILITY_SS)
1929  CHECK(FUNC(scalability_structure)(ctx, rw, current));
1930 
1931  return 0;
1932 }
1933 
1935  AV1RawMetadataITUTT35 *current)
1936 {
1937  int err;
1938  size_t i;
1939 
1940  fb(8, itu_t_t35_country_code);
1941  if (current->itu_t_t35_country_code == 0xff)
1942  fb(8, itu_t_t35_country_code_extension_byte);
1943 
1944 #ifdef READ
1945  // The payload runs up to the start of the trailing bits, but there might
1946  // be arbitrarily many trailing zeroes so we need to read through twice.
1947  current->payload_size = cbs_av1_get_payload_bytes_left(rw);
1948 
1949  current->payload_ref = av_buffer_alloc(current->payload_size);
1950  if (!current->payload_ref)
1951  return AVERROR(ENOMEM);
1952  current->payload = current->payload_ref->data;
1953 #endif
1954 
1955  for (i = 0; i < current->payload_size; i++)
1956  xf(8, itu_t_t35_payload_bytes[i], current->payload[i],
1957  0x00, 0xff, 1, i);
1958 
1959  return 0;
1960 }
1961 
1963  AV1RawMetadataTimecode *current)
1964 {
1965  int err;
1966 
1967  fb(5, counting_type);
1968  flag(full_timestamp_flag);
1969  flag(discontinuity_flag);
1970  flag(cnt_dropped_flag);
1971  fb(9, n_frames);
1972 
1973  if (current->full_timestamp_flag) {
1974  fc(6, seconds_value, 0, 59);
1975  fc(6, minutes_value, 0, 59);
1976  fc(5, hours_value, 0, 23);
1977  } else {
1978  flag(seconds_flag);
1979  if (current->seconds_flag) {
1980  fc(6, seconds_value, 0, 59);
1981  flag(minutes_flag);
1982  if (current->minutes_flag) {
1983  fc(6, minutes_value, 0, 59);
1984  flag(hours_flag);
1985  if (current->hours_flag)
1986  fc(5, hours_value, 0, 23);
1987  }
1988  }
1989  }
1990 
1991  fb(5, time_offset_length);
1992  if (current->time_offset_length > 0)
1993  fb(current->time_offset_length, time_offset_value);
1994  else
1995  infer(time_offset_length, 0);
1996 
1997  return 0;
1998 }
1999 
2001  AV1RawMetadata *current)
2002 {
2003  int err;
2004 
2005  leb128(metadata_type);
2006 
2007  switch (current->metadata_type) {
2009  CHECK(FUNC(metadata_hdr_cll)(ctx, rw, &current->metadata.hdr_cll));
2010  break;
2012  CHECK(FUNC(metadata_hdr_mdcv)(ctx, rw, &current->metadata.hdr_mdcv));
2013  break;
2015  CHECK(FUNC(metadata_scalability)(ctx, rw, &current->metadata.scalability));
2016  break;
2018  CHECK(FUNC(metadata_itut_t35)(ctx, rw, &current->metadata.itut_t35));
2019  break;
2021  CHECK(FUNC(metadata_timecode)(ctx, rw, &current->metadata.timecode));
2022  break;
2023  default:
2024  // Unknown metadata type.
2025  return AVERROR_PATCHWELCOME;
2026  }
2027 
2028  return 0;
2029 }
2030 
2032  AV1RawPadding *current)
2033 {
2034  int i, err;
2035 
2036  HEADER("Padding");
2037 
2038 #ifdef READ
2039  // The payload runs up to the start of the trailing bits, but there might
2040  // be arbitrarily many trailing zeroes so we need to read through twice.
2041  current->payload_size = cbs_av1_get_payload_bytes_left(rw);
2042 
2043  current->payload_ref = av_buffer_alloc(current->payload_size);
2044  if (!current->payload_ref)
2045  return AVERROR(ENOMEM);
2046  current->payload = current->payload_ref->data;
2047 #endif
2048 
2049  for (i = 0; i < current->payload_size; i++)
2050  xf(8, obu_padding_byte[i], current->payload[i], 0x00, 0xff, 1, i);
2051 
2052  return 0;
2053 }
static double val(void *priv, double ch)
Definition: aeval.c:76
uint8_t
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
#define FF_PROFILE_AV1_HIGH
Definition: avcodec.h:1955
#define FF_PROFILE_AV1_MAIN
Definition: avcodec.h:1954
#define FF_PROFILE_AV1_PROFESSIONAL
Definition: avcodec.h:1956
#define FUNC(a)
#define fixed(width, name, value)
Definition: cbs_av1.c:566
#define fbs(width, name, subs,...)
Definition: cbs_av1.c:557
static size_t cbs_av1_get_payload_bytes_left(GetBitContext *gbc)
Definition: cbs_av1.c:521
#define flag(name)
Definition: cbs_av1.c:553
#define xf(width, name, var, range_min, range_max, subs,...)
Definition: cbs_av1.c:664
#define fb(width, name)
Definition: cbs_av1.c:549
#define fcs(width, name, range_min, range_max, subs,...)
Definition: cbs_av1.c:559
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define infer(name, value)
Definition: cbs_av1.c:709
#define ns(max_value, name, subs,...)
Definition: cbs_av1.c:682
static int cbs_av1_get_relative_dist(const AV1RawSequenceHeader *seq, unsigned int a, unsigned int b)
Definition: cbs_av1.c:509
#define subexp(name, max, subs,...)
Definition: cbs_av1.c:693
#define RWContext
Definition: cbs_av1.c:662
#define leb128(name)
Definition: cbs_av1.c:705
static int cbs_av1_tile_log2(int blksize, int target)
Definition: cbs_av1.c:502
#define sus(width, name, subs,...)
Definition: cbs_av1.c:563
#define increment(name, min, max)
Definition: cbs_av1.c:688
#define fc(width, name, range_min, range_max)
Definition: cbs_av1.c:551
#define uvlc(name, range_min, range_max)
Definition: cbs_av1.c:677
#define delta_q(name)
Definition: cbs_av1.c:699
#define HEADER(name)
Definition: cbs_av1.c:533
static int FUNC() metadata_itut_t35(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadataITUTT35 *current)
static int FUNC() metadata_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadata *current)
static int FUNC() cdef_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() byte_alignment(CodedBitstreamContext *ctx, RWContext *rw)
static int FUNC() lr_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() uncompressed_header(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() metadata_scalability(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadataScalability *current)
static int FUNC() metadata_timecode(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadataTimecode *current)
static int FUNC() frame_header_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current, int redundant, AVBufferRef *rw_buffer_ref)
static int FUNC() tile_list_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawTileList *current)
static int FUNC() loop_filter_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() skip_mode_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() set_frame_refs(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() timing_info(CodedBitstreamContext *ctx, RWContext *rw, AV1RawTimingInfo *current)
static int FUNC() superres_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() padding_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawPadding *current)
static int FUNC() decoder_model_info(CodedBitstreamContext *ctx, RWContext *rw, AV1RawDecoderModelInfo *current)
static int FUNC() tile_group_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawTileGroup *current)
static int FUNC() frame_size_with_refs(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() global_motion_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() frame_reference_mode(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() obu_header(CodedBitstreamContext *ctx, RWContext *rw, AV1RawOBUHeader *current)
static int FUNC() segmentation_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() color_config(CodedBitstreamContext *ctx, RWContext *rw, AV1RawColorConfig *current, int seq_profile)
static int FUNC() tile_info(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() metadata_hdr_cll(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadataHDRCLL *current)
static int FUNC() temporal_delimiter_obu(CodedBitstreamContext *ctx, RWContext *rw)
static int FUNC() film_grain_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFilmGrainParams *current, AV1RawFrameHeader *frame_header)
static int FUNC() sequence_header_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawSequenceHeader *current)
static int FUNC() interpolation_filter(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() trailing_bits(CodedBitstreamContext *ctx, RWContext *rw, int nb_bits)
static int FUNC() metadata_hdr_mdcv(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadataHDRMDCV *current)
static int FUNC() read_tx_mode(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() quantization_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() delta_lf_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() scalability_structure(CodedBitstreamContext *ctx, RWContext *rw, AV1RawMetadataScalability *current)
static int FUNC() global_motion_param(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current, int type, int ref, int idx)
static int FUNC() frame_obu(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrame *current, AVBufferRef *rw_buffer_ref)
static int FUNC() delta_q_params(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() frame_size(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
static int FUNC() render_size(CodedBitstreamContext *ctx, RWContext *rw, AV1RawFrameHeader *current)
#define MAX_UINT_BITS(length)
Definition: cbs_internal.h:169
static int FUNC() frame_header(CodedBitstreamContext *ctx, RWContext *rw, JPEGRawFrameHeader *current)
#define FFMIN(a, b)
Definition: common.h:105
#define FFMAX(a, b)
Definition: common.h:103
#define av_clip_uintp2
Definition: common.h:146
static void show_frame(WriterContext *w, AVFrame *frame, AVStream *stream, AVFormatContext *fmt_ctx)
Definition: ffprobe.c:2216
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:219
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:379
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:659
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
Definition: avcodec.h:215
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
Definition: buffer.c:125
AVBufferRef * av_buffer_alloc(buffer_size_t size)
Allocate an AVBuffer of the given size using av_malloc().
Definition: buffer.c:67
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
cl_device_type type
int i
Definition: input.c:407
frame_type
@ AV1_RESTORE_NONE
Definition: av1.h:165
@ AV1_OBU_PADDING
Definition: av1.h:39
@ AV1_REF_FRAME_LAST2
Definition: av1.h:63
@ AV1_REF_FRAME_LAST
Definition: av1.h:62
@ AV1_REF_FRAME_ALTREF2
Definition: av1.h:67
@ AV1_REF_FRAME_INTRA
Definition: av1.h:61
@ AV1_REF_FRAME_ALTREF
Definition: av1.h:68
@ AV1_REF_FRAME_BWDREF
Definition: av1.h:66
@ AV1_REF_FRAME_GOLDEN
Definition: av1.h:65
@ AV1_REF_FRAME_LAST3
Definition: av1.h:64
@ AV1_FRAME_KEY
Definition: av1.h:53
@ AV1_FRAME_INTER
Definition: av1.h:54
@ AV1_FRAME_INTRA_ONLY
Definition: av1.h:55
@ AV1_FRAME_SWITCH
Definition: av1.h:56
@ AV1_SCALABILITY_SS
Definition: av1.h:146
@ AV1_METADATA_TYPE_SCALABILITY
Definition: av1.h:46
@ AV1_METADATA_TYPE_HDR_MDCV
Definition: av1.h:45
@ AV1_METADATA_TYPE_TIMECODE
Definition: av1.h:48
@ AV1_METADATA_TYPE_ITUT_T35
Definition: av1.h:47
@ AV1_METADATA_TYPE_HDR_CLL
Definition: av1.h:44
@ AV1_CSP_COLOCATED
Definition: av1.h:127
@ AV1_CSP_UNKNOWN
Definition: av1.h:125
@ AV1_WARP_MODEL_ROTZOOM
Definition: av1.h:115
@ AV1_SUPERRES_DENOM_MIN
Definition: av1.h:101
@ AV1_GM_TRANS_ONLY_PREC_BITS
Definition: av1.h:108
@ AV1_WARP_MODEL_IDENTITY
Definition: av1.h:113
@ AV1_SEG_LVL_MAX
Definition: av1.h:89
@ AV1_SELECT_SCREEN_CONTENT_TOOLS
Definition: av1.h:97
@ AV1_MAX_TILE_WIDTH
Definition: av1.h:78
@ AV1_PRIMARY_REF_NONE
Definition: av1.h:86
@ AV1_SUPERRES_NUM
Definition: av1.h:100
@ AV1_NUM_REF_FRAMES
Definition: av1.h:83
@ AV1_INTERPOLATION_FILTER_SWITCHABLE
Definition: av1.h:103
@ AV1_GM_ALPHA_PREC_BITS
Definition: av1.h:106
@ AV1_MAX_TILE_COLS
Definition: av1.h:81
@ AV1_MAX_SEGMENTS
Definition: av1.h:88
@ AV1_SELECT_INTEGER_MV
Definition: av1.h:98
@ AV1_GM_ABS_ALPHA_BITS
Definition: av1.h:105
@ AV1_REFS_PER_FRAME
Definition: av1.h:84
@ AV1_TOTAL_REFS_PER_FRAME
Definition: av1.h:85
@ AV1_WARP_MODEL_TRANSLATION
Definition: av1.h:114
@ AV1_MAX_TILE_ROWS
Definition: av1.h:80
@ AV1_SEG_LVL_ALT_Q
Definition: av1.h:91
@ AV1_GM_ABS_TRANS_BITS
Definition: av1.h:109
@ AV1_GM_ABS_TRANS_ONLY_BITS
Definition: av1.h:107
@ AV1_MAX_TILE_AREA
Definition: av1.h:79
@ AV1_WARP_MODEL_AFFINE
Definition: av1.h:116
@ AV1_GM_TRANS_PREC_BITS
Definition: av1.h:110
static const struct TransferCharacteristics transfer_characteristics[AVCOL_TRC_NB]
static const struct ColorPrimaries color_primaries[AVCOL_PRI_NB]
@ AVCOL_PRI_BT709
also ITU-R BT1361 / IEC 61966-2-4 / SMPTE RP177 Annex B
Definition: pixfmt.h:460
@ AVCOL_PRI_UNSPECIFIED
Definition: pixfmt.h:461
@ AVCOL_TRC_IEC61966_2_1
IEC 61966-2-1 (sRGB or sYCC)
Definition: pixfmt.h:497
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:486
@ AVCOL_SPC_RGB
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
Definition: pixfmt.h:513
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:515
static int put_bits_count(PutBitContext *s)
Definition: put_bits.h:76
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
Definition: put_bits.h:110
typedef void(RENAME(mix_any_func_type))
uint8_t subsampling_x
Definition: cbs_av1.h:52
uint8_t mono_chrome
Definition: cbs_av1.h:44
uint8_t subsampling_y
Definition: cbs_av1.h:53
uint8_t separate_uv_delta_q
Definition: cbs_av1.h:55
uint8_t frame_presentation_time_length_minus_1
Definition: cbs_av1.h:70
uint8_t buffer_removal_time_length_minus_1
Definition: cbs_av1.h:69
uint8_t use_128x128_superblock
Definition: cbs_av1.h:105
uint8_t enable_ref_frame_mvs
Definition: cbs_av1.h:115
uint8_t frame_id_numbers_present_flag
Definition: cbs_av1.h:101
uint8_t enable_restoration
Definition: cbs_av1.h:126
uint8_t decoder_model_info_present_flag
Definition: cbs_av1.h:79
uint8_t enable_cdef
Definition: cbs_av1.h:125
uint8_t reduced_still_picture_header
Definition: cbs_av1.h:76
uint16_t max_frame_height_minus_1
Definition: cbs_av1.h:99
uint8_t seq_force_integer_mv
Definition: cbs_av1.h:120
uint8_t film_grain_params_present
Definition: cbs_av1.h:130
AV1RawColorConfig color_config
Definition: cbs_av1.h:128
uint8_t additional_frame_id_length_minus_1
Definition: cbs_av1.h:103
uint8_t delta_frame_id_length_minus_2
Definition: cbs_av1.h:102
uint16_t operating_point_idc[AV1_MAX_OPERATING_POINTS]
Definition: cbs_av1.h:86
uint8_t enable_superres
Definition: cbs_av1.h:124
AV1RawDecoderModelInfo decoder_model_info
Definition: cbs_av1.h:84
uint8_t frame_height_bits_minus_1
Definition: cbs_av1.h:97
uint8_t decoder_model_present_for_this_op[AV1_MAX_OPERATING_POINTS]
Definition: cbs_av1.h:89
uint8_t enable_warped_motion
Definition: cbs_av1.h:110
uint8_t order_hint_bits_minus_1
Definition: cbs_av1.h:122
uint8_t frame_width_bits_minus_1
Definition: cbs_av1.h:96
AV1RawTimingInfo timing_info
Definition: cbs_av1.h:83
uint16_t max_frame_width_minus_1
Definition: cbs_av1.h:98
uint8_t enable_order_hint
Definition: cbs_av1.h:113
uint8_t seq_force_screen_content_tools
Definition: cbs_av1.h:118
uint8_t operating_points_cnt_minus_1
Definition: cbs_av1.h:81
uint8_t equal_picture_interval
Definition: cbs_av1.h:62
int8_t loop_filter_ref_deltas[AV1_TOTAL_REFS_PER_FRAME]
Definition: cbs_av1.h:421
uint8_t feature_enabled[AV1_MAX_SEGMENTS][AV1_SEG_LVL_MAX]
Definition: cbs_av1.h:423
int16_t feature_value[AV1_MAX_SEGMENTS][AV1_SEG_LVL_MAX]
Definition: cbs_av1.h:424
int8_t loop_filter_mode_deltas[2]
Definition: cbs_av1.h:422
A reference to a data buffer.
Definition: buffer.h:84
uint8_t * data
The data buffer.
Definition: buffer.h:92
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1474
void * priv_data
Format private data.
Definition: avformat.h:1260
uint8_t * frame_header
Definition: cbs_av1.h:435
AV1RawSequenceHeader * sequence_header
Definition: cbs_av1.h:430
AVBufferRef * frame_header_ref
Definition: cbs_av1.h:434
AV1ReferenceFrameState ref[AV1_NUM_REF_FRAMES]
Definition: cbs_av1.h:457
Context structure for coded bitstream operations.
Definition: cbs.h:170
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
AVFormatContext * ctx
Definition: movenc.c:48
const char * b
Definition: vf_curves.c:118
CHECK(-1) CHECK(-2) }} }} CHECK(1) CHECK(2) }} }} } if(diff0+diff1 > 0) temp -
color_range
uint8_t bits
Definition: vp3data.h:141
static void update_refs(VP8Context *s)
Definition: vp8.c:470