FFmpeg
h264dec.c
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 /**
23  * @file
24  * H.264 / AVC / MPEG-4 part10 codec.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #define UNCHECKED_BITSTREAM_READER 1
29 
30 #include "config_components.h"
31 
32 #include "libavutil/avassert.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/thread.h"
37 
38 #include "codec_internal.h"
39 #include "internal.h"
40 #include "error_resilience.h"
41 #include "avcodec.h"
42 #include "h264.h"
43 #include "h264dec.h"
44 #include "h2645_parse.h"
45 #include "h264data.h"
46 #include "h264_ps.h"
47 #include "golomb.h"
48 #include "hwconfig.h"
49 #include "mpegutils.h"
50 #include "profiles.h"
51 #include "rectangle.h"
52 #include "thread.h"
53 #include "threadframe.h"
54 
55 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
56 
58 {
59  H264Context *h = avctx->priv_data;
60  return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
61 }
62 
63 static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
64  int (*mv)[2][4][2],
65  int mb_x, int mb_y, int mb_intra, int mb_skipped)
66 {
67  H264Context *h = opaque;
68  H264SliceContext *sl = &h->slice_ctx[0];
69 
70  sl->mb_x = mb_x;
71  sl->mb_y = mb_y;
72  sl->mb_xy = mb_x + mb_y * h->mb_stride;
73  memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
74  av_assert1(ref >= 0);
75  /* FIXME: It is possible albeit uncommon that slice references
76  * differ between slices. We take the easy approach and ignore
77  * it for now. If this turns out to have any relevance in
78  * practice then correct remapping should be added. */
79  if (ref >= sl->ref_count[0])
80  ref = 0;
81  if (!sl->ref_list[0][ref].data[0]) {
82  av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
83  ref = 0;
84  }
85  if ((sl->ref_list[0][ref].reference&3) != 3) {
86  av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
87  return;
88  }
89  fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
90  2, 2, 2, ref, 1);
91  fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
92  fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
93  pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
94  sl->mb_mbaff =
95  sl->mb_field_decoding_flag = 0;
96  ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
97 }
98 
100  int y, int height)
101 {
102  AVCodecContext *avctx = h->avctx;
103  const AVFrame *src = h->cur_pic.f;
105  int vshift = desc->log2_chroma_h;
106  const int field_pic = h->picture_structure != PICT_FRAME;
107  if (field_pic) {
108  height <<= 1;
109  y <<= 1;
110  }
111 
112  height = FFMIN(height, avctx->height - y);
113 
114  if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
115  return;
116 
117  if (avctx->draw_horiz_band) {
119  int i;
120 
121  offset[0] = y * src->linesize[0];
122  offset[1] =
123  offset[2] = (y >> vshift) * src->linesize[1];
124  for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
125  offset[i] = 0;
126 
127  emms_c();
128 
129  avctx->draw_horiz_band(avctx, src, offset,
130  y, h->picture_structure, height);
131  }
132 }
133 
135 {
136  int i;
137 
138  av_freep(&h->intra4x4_pred_mode);
139  av_freep(&h->chroma_pred_mode_table);
140  av_freep(&h->cbp_table);
141  av_freep(&h->mvd_table[0]);
142  av_freep(&h->mvd_table[1]);
143  av_freep(&h->direct_table);
144  av_freep(&h->non_zero_count);
145  av_freep(&h->slice_table_base);
146  h->slice_table = NULL;
147  av_freep(&h->list_counts);
148 
149  av_freep(&h->mb2b_xy);
150  av_freep(&h->mb2br_xy);
151 
152  av_buffer_pool_uninit(&h->qscale_table_pool);
153  av_buffer_pool_uninit(&h->mb_type_pool);
154  av_buffer_pool_uninit(&h->motion_val_pool);
155  av_buffer_pool_uninit(&h->ref_index_pool);
156 
157 #if CONFIG_ERROR_RESILIENCE
158  av_freep(&h->er.mb_index2xy);
159  av_freep(&h->er.error_status_table);
160  av_freep(&h->er.er_temp_buffer);
161  av_freep(&h->dc_val_base);
162 #endif
163 
164  for (i = 0; i < h->nb_slice_ctx; i++) {
165  H264SliceContext *sl = &h->slice_ctx[i];
166 
169  av_freep(&sl->top_borders[0]);
170  av_freep(&sl->top_borders[1]);
171 
174  sl->top_borders_allocated[0] = 0;
175  sl->top_borders_allocated[1] = 0;
176  }
177 }
178 
180 {
181  ERContext *const er = &h->er;
182  const int big_mb_num = h->mb_stride * (h->mb_height + 1);
183  const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
184  const int st_size = big_mb_num + h->mb_stride;
185  int x, y;
186 
187  if (!FF_ALLOCZ_TYPED_ARRAY(h->intra4x4_pred_mode, row_mb_num * 8) ||
188  !FF_ALLOCZ_TYPED_ARRAY(h->non_zero_count, big_mb_num) ||
189  !FF_ALLOCZ_TYPED_ARRAY(h->slice_table_base, st_size) ||
190  !FF_ALLOCZ_TYPED_ARRAY(h->cbp_table, big_mb_num) ||
191  !FF_ALLOCZ_TYPED_ARRAY(h->chroma_pred_mode_table, big_mb_num) ||
192  !FF_ALLOCZ_TYPED_ARRAY(h->mvd_table[0], row_mb_num * 8) ||
193  !FF_ALLOCZ_TYPED_ARRAY(h->mvd_table[1], row_mb_num * 8) ||
194  !FF_ALLOCZ_TYPED_ARRAY(h->direct_table, big_mb_num * 4) ||
195  !FF_ALLOCZ_TYPED_ARRAY(h->list_counts, big_mb_num) ||
196  !FF_ALLOCZ_TYPED_ARRAY(h->mb2b_xy, big_mb_num) ||
197  !FF_ALLOCZ_TYPED_ARRAY(h->mb2br_xy, big_mb_num))
198  return AVERROR(ENOMEM);
199  h->slice_ctx[0].intra4x4_pred_mode = h->intra4x4_pred_mode;
200  h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
201  h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
202  memset(h->slice_table_base, -1,
203  st_size * sizeof(*h->slice_table_base));
204  h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
205  for (y = 0; y < h->mb_height; y++)
206  for (x = 0; x < h->mb_width; x++) {
207  const int mb_xy = x + y * h->mb_stride;
208  const int b_xy = 4 * x + 4 * y * h->b_stride;
209 
210  h->mb2b_xy[mb_xy] = b_xy;
211  h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
212  }
213 
214  if (CONFIG_ERROR_RESILIENCE) {
215  const int er_size = h->mb_height * h->mb_stride * (4*sizeof(int) + 1);
216  int mb_array_size = h->mb_height * h->mb_stride;
217  int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
218  int yc_size = y_size + 2 * big_mb_num;
219 
220  /* init ER */
221  er->avctx = h->avctx;
223  er->opaque = h;
224  er->quarter_sample = 1;
225 
226  er->mb_num = h->mb_num;
227  er->mb_width = h->mb_width;
228  er->mb_height = h->mb_height;
229  er->mb_stride = h->mb_stride;
230  er->b8_stride = h->mb_width * 2 + 1;
231 
232  // error resilience code looks cleaner with this
233  if (!FF_ALLOCZ_TYPED_ARRAY(er->mb_index2xy, h->mb_num + 1) ||
234  !FF_ALLOCZ_TYPED_ARRAY(er->error_status_table, mb_array_size) ||
235  !FF_ALLOCZ_TYPED_ARRAY(er->er_temp_buffer, er_size) ||
236  !FF_ALLOCZ_TYPED_ARRAY(h->dc_val_base, yc_size))
237  return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
238 
239  for (y = 0; y < h->mb_height; y++)
240  for (x = 0; x < h->mb_width; x++)
241  er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
242 
243  er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
244  h->mb_stride + h->mb_width;
245  er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2;
246  er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1;
247  er->dc_val[2] = er->dc_val[1] + big_mb_num;
248  for (int i = 0; i < yc_size; i++)
249  h->dc_val_base[i] = 1024;
250  }
251 
252  return 0;
253 }
254 
255 /**
256  * Init slice context
257  */
259 {
260  sl->ref_cache[0][scan8[5] + 1] =
261  sl->ref_cache[0][scan8[7] + 1] =
262  sl->ref_cache[0][scan8[13] + 1] =
263  sl->ref_cache[1][scan8[5] + 1] =
264  sl->ref_cache[1][scan8[7] + 1] =
265  sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
266 
267  sl->er = &h->er;
268 }
269 
270 static int h264_init_pic(H264Picture *pic)
271 {
272  pic->f = av_frame_alloc();
273  if (!pic->f)
274  return AVERROR(ENOMEM);
275 
276  pic->f_grain = av_frame_alloc();
277  if (!pic->f_grain)
278  return AVERROR(ENOMEM);
279 
280  return 0;
281 }
282 
284 {
285  int i, ret;
286 
287  h->avctx = avctx;
288  h->cur_chroma_format_idc = -1;
289 
290  h->width_from_caller = avctx->width;
291  h->height_from_caller = avctx->height;
292 
293  h->workaround_bugs = avctx->workaround_bugs;
294  h->flags = avctx->flags;
295  h->poc.prev_poc_msb = 1 << 16;
296  h->recovery_frame = -1;
297  h->frame_recovered = 0;
298  h->poc.prev_frame_num = -1;
299  h->sei.common.frame_packing.arrangement_cancel_flag = -1;
300  h->sei.common.unregistered.x264_build = -1;
301 
302  h->next_outputed_poc = INT_MIN;
303  for (i = 0; i < FF_ARRAY_ELEMS(h->last_pocs); i++)
304  h->last_pocs[i] = INT_MIN;
305 
306  ff_h264_sei_uninit(&h->sei);
307 
308  h->nb_slice_ctx = (avctx->active_thread_type & FF_THREAD_SLICE) ? avctx->thread_count : 1;
309  h->slice_ctx = av_calloc(h->nb_slice_ctx, sizeof(*h->slice_ctx));
310  if (!h->slice_ctx) {
311  h->nb_slice_ctx = 0;
312  return AVERROR(ENOMEM);
313  }
314 
315  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
316  if ((ret = h264_init_pic(&h->DPB[i])) < 0)
317  return ret;
318  }
319 
320  if ((ret = h264_init_pic(&h->cur_pic)) < 0)
321  return ret;
322 
323  if ((ret = h264_init_pic(&h->last_pic_for_ec)) < 0)
324  return ret;
325 
326  for (i = 0; i < h->nb_slice_ctx; i++)
327  h->slice_ctx[i].h264 = h;
328 
329  return 0;
330 }
331 
333 {
334  ff_h264_unref_picture(h, pic);
335  av_frame_free(&pic->f);
336  av_frame_free(&pic->f_grain);
337 }
338 
340 {
341  H264Context *h = avctx->priv_data;
342  int i;
343 
346 
347  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
348  h264_free_pic(h, &h->DPB[i]);
349  }
350  memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
351 
352  h->cur_pic_ptr = NULL;
353 
354  av_freep(&h->slice_ctx);
355  h->nb_slice_ctx = 0;
356 
357  ff_h264_sei_uninit(&h->sei);
358  ff_h264_ps_uninit(&h->ps);
359 
360  ff_h2645_packet_uninit(&h->pkt);
361 
362  h264_free_pic(h, &h->cur_pic);
363  h264_free_pic(h, &h->last_pic_for_ec);
364 
365  return 0;
366 }
367 
369 
371 {
372  H264Context *h = avctx->priv_data;
373  int ret;
374 
375  ret = h264_init_context(avctx, h);
376  if (ret < 0)
377  return ret;
378 
380  if (ret != 0) {
381  av_log(avctx, AV_LOG_ERROR, "pthread_once has failed.");
382  return AVERROR_UNKNOWN;
383  }
384 
385  avctx->ticks_per_frame = 2;
386 
387  if (!avctx->internal->is_copy) {
388  if (avctx->extradata_size > 0 && avctx->extradata) {
390  &h->ps, &h->is_avc, &h->nal_length_size,
391  avctx->err_recognition, avctx);
392  if (ret < 0) {
393  int explode = avctx->err_recognition & AV_EF_EXPLODE;
394  av_log(avctx, explode ? AV_LOG_ERROR: AV_LOG_WARNING,
395  "Error decoding the extradata\n");
396  if (explode) {
397  return ret;
398  }
399  ret = 0;
400  }
401  }
402  }
403 
404  if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
405  h->avctx->has_b_frames < h->ps.sps->num_reorder_frames) {
406  h->avctx->has_b_frames = h->ps.sps->num_reorder_frames;
407  }
408 
410 
411  if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
412  h->enable_er = 0;
413 
414  if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
415  av_log(avctx, AV_LOG_WARNING,
416  "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
417  "Use it at your own risk\n");
418  }
419 
420  return 0;
421 }
422 
423 /**
424  * instantaneous decoder refresh.
425  */
426 static void idr(H264Context *h)
427 {
428  int i;
430  h->poc.prev_frame_num =
431  h->poc.prev_frame_num_offset = 0;
432  h->poc.prev_poc_msb = 1<<16;
433  h->poc.prev_poc_lsb = -1;
434  for (i = 0; i < FF_ARRAY_ELEMS(h->last_pocs); i++)
435  h->last_pocs[i] = INT_MIN;
436 }
437 
438 /* forget old pics after a seek */
440 {
441  int i, j;
442 
443  h->next_outputed_poc = INT_MIN;
444  h->prev_interlaced_frame = 1;
445  idr(h);
446 
447  h->poc.prev_frame_num = -1;
448  if (h->cur_pic_ptr) {
449  h->cur_pic_ptr->reference = 0;
450  for (j=i=0; h->delayed_pic[i]; i++)
451  if (h->delayed_pic[i] != h->cur_pic_ptr)
452  h->delayed_pic[j++] = h->delayed_pic[i];
453  h->delayed_pic[j] = NULL;
454  }
455  ff_h264_unref_picture(h, &h->last_pic_for_ec);
456 
457  h->first_field = 0;
458  h->recovery_frame = -1;
459  h->frame_recovered = 0;
460  h->current_slice = 0;
461  h->mmco_reset = 1;
462 }
463 
465 {
466  H264Context *h = avctx->priv_data;
467  int i;
468 
469  memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
470 
472  ff_h264_sei_uninit(&h->sei);
473 
474  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++)
475  ff_h264_unref_picture(h, &h->DPB[i]);
476  h->cur_pic_ptr = NULL;
477  ff_h264_unref_picture(h, &h->cur_pic);
478 
479  h->mb_y = 0;
480 
482  h->context_initialized = 0;
483 }
484 
486 {
487  int nals_needed = 0;
488  int slice_type = 0;
489  int picture_intra_only = 1;
490  int first_slice = 0;
491  int i, ret;
492 
493  for (i = 0; i < h->pkt.nb_nals; i++) {
494  H2645NAL *nal = &h->pkt.nals[i];
495  GetBitContext gb;
496 
497  /* packets can sometimes contain multiple PPS/SPS,
498  * e.g. two PAFF field pictures in one packet, or a demuxer
499  * which splits NALs strangely if so, when frame threading we
500  * can't start the next thread until we've read all of them */
501  switch (nal->type) {
502  case H264_NAL_SPS:
503  case H264_NAL_PPS:
504  nals_needed = i;
505  break;
506  case H264_NAL_DPA:
507  case H264_NAL_IDR_SLICE:
508  case H264_NAL_SLICE:
509  ret = init_get_bits8(&gb, nal->data + 1, nal->size - 1);
510  if (ret < 0) {
511  av_log(h->avctx, AV_LOG_ERROR, "Invalid zero-sized VCL NAL unit\n");
512  if (h->avctx->err_recognition & AV_EF_EXPLODE)
513  return ret;
514 
515  break;
516  }
517  if (!get_ue_golomb_long(&gb) || // first_mb_in_slice
518  !first_slice ||
519  first_slice != nal->type)
520  nals_needed = i;
521  slice_type = get_ue_golomb_31(&gb);
522  if (slice_type > 9)
523  slice_type = 0;
524  if (slice_type > 4)
525  slice_type -= 5;
526 
527  slice_type = ff_h264_golomb_to_pict_type[slice_type];
528  picture_intra_only &= (slice_type & 3) == AV_PICTURE_TYPE_I;
529  if (!first_slice)
530  first_slice = nal->type;
531  }
532  }
533 
534  h->picture_intra_only = picture_intra_only;
535 
536  return nals_needed;
537 }
538 
539 static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
540 {
541  av_log(logctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
542  av_log(logctx, AV_LOG_DEBUG, " green_metadata_type: %d\n", gm->green_metadata_type);
543 
544  if (gm->green_metadata_type == 0) {
545  av_log(logctx, AV_LOG_DEBUG, " green_metadata_period_type: %d\n", gm->period_type);
546 
547  if (gm->period_type == 2)
548  av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_seconds: %d\n", gm->num_seconds);
549  else if (gm->period_type == 3)
550  av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_pictures: %d\n", gm->num_pictures);
551 
552  av_log(logctx, AV_LOG_DEBUG, " SEI GREEN Complexity Metrics: %f %f %f %f\n",
553  (float)gm->percent_non_zero_macroblocks/255,
554  (float)gm->percent_intra_coded_macroblocks/255,
555  (float)gm->percent_six_tap_filtering/255,
557 
558  } else if (gm->green_metadata_type == 1) {
559  av_log(logctx, AV_LOG_DEBUG, " xsd_metric_type: %d\n", gm->xsd_metric_type);
560 
561  if (gm->xsd_metric_type == 0)
562  av_log(logctx, AV_LOG_DEBUG, " xsd_metric_value: %f\n",
563  (float)gm->xsd_metric_value/100);
564  }
565 }
566 
567 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
568 {
569  AVCodecContext *const avctx = h->avctx;
570  int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
571  int idr_cleared=0;
572  int i, ret = 0;
573 
574  h->has_slice = 0;
575  h->nal_unit_type= 0;
576 
577  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
578  h->current_slice = 0;
579  if (!h->first_field) {
580  h->cur_pic_ptr = NULL;
581  ff_h264_sei_uninit(&h->sei);
582  }
583  }
584 
585  if (h->nal_length_size == 4) {
586  if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
587  h->is_avc = 0;
588  }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
589  h->is_avc = 1;
590  }
591 
592  ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc, h->nal_length_size,
593  avctx->codec_id, 0, 0);
594  if (ret < 0) {
595  av_log(avctx, AV_LOG_ERROR,
596  "Error splitting the input into NAL units.\n");
597  return ret;
598  }
599 
600  if (avctx->active_thread_type & FF_THREAD_FRAME)
601  nals_needed = get_last_needed_nal(h);
602  if (nals_needed < 0)
603  return nals_needed;
604 
605  for (i = 0; i < h->pkt.nb_nals; i++) {
606  H2645NAL *nal = &h->pkt.nals[i];
607  int max_slice_ctx, err;
608 
609  if (avctx->skip_frame >= AVDISCARD_NONREF &&
610  nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
611  continue;
612 
613  // FIXME these should stop being context-global variables
614  h->nal_ref_idc = nal->ref_idc;
615  h->nal_unit_type = nal->type;
616 
617  err = 0;
618  switch (nal->type) {
619  case H264_NAL_IDR_SLICE:
620  if ((nal->data[1] & 0xFC) == 0x98) {
621  av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
622  h->next_outputed_poc = INT_MIN;
623  ret = -1;
624  goto end;
625  }
626  if(!idr_cleared) {
627  idr(h); // FIXME ensure we don't lose some frames if there is reordering
628  }
629  idr_cleared = 1;
630  h->has_recovery_point = 1;
631  case H264_NAL_SLICE:
632  h->has_slice = 1;
633 
634  if ((err = ff_h264_queue_decode_slice(h, nal))) {
635  H264SliceContext *sl = h->slice_ctx + h->nb_slice_ctx_queued;
636  sl->ref_count[0] = sl->ref_count[1] = 0;
637  break;
638  }
639 
640  if (h->current_slice == 1) {
641  if (avctx->active_thread_type & FF_THREAD_FRAME &&
642  i >= nals_needed && !h->setup_finished && h->cur_pic_ptr) {
643  ff_thread_finish_setup(avctx);
644  h->setup_finished = 1;
645  }
646 
647  if (h->avctx->hwaccel &&
648  (ret = h->avctx->hwaccel->start_frame(h->avctx, buf, buf_size)) < 0)
649  goto end;
650  }
651 
652  max_slice_ctx = avctx->hwaccel ? 1 : h->nb_slice_ctx;
653  if (h->nb_slice_ctx_queued == max_slice_ctx) {
654  if (h->avctx->hwaccel) {
655  ret = avctx->hwaccel->decode_slice(avctx, nal->raw_data, nal->raw_size);
656  h->nb_slice_ctx_queued = 0;
657  } else
659  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
660  goto end;
661  }
662  break;
663  case H264_NAL_DPA:
664  case H264_NAL_DPB:
665  case H264_NAL_DPC:
666  avpriv_request_sample(avctx, "data partitioning");
667  break;
668  case H264_NAL_SEI:
669  if (h->setup_finished) {
670  avpriv_request_sample(avctx, "Late SEI");
671  break;
672  }
673  ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
674  h->has_recovery_point = h->has_recovery_point || h->sei.recovery_point.recovery_frame_cnt != -1;
675  if (avctx->debug & FF_DEBUG_GREEN_MD)
676  debug_green_metadata(&h->sei.green_metadata, h->avctx);
677  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
678  goto end;
679  break;
680  case H264_NAL_SPS: {
681  GetBitContext tmp_gb = nal->gb;
682  if (avctx->hwaccel && avctx->hwaccel->decode_params) {
683  ret = avctx->hwaccel->decode_params(avctx,
684  nal->type,
685  nal->raw_data,
686  nal->raw_size);
687  if (ret < 0)
688  goto end;
689  }
690  if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
691  break;
692  av_log(h->avctx, AV_LOG_DEBUG,
693  "SPS decoding failure, trying again with the complete NAL\n");
694  init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
695  if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
696  break;
697  ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
698  break;
699  }
700  case H264_NAL_PPS:
701  if (avctx->hwaccel && avctx->hwaccel->decode_params) {
702  ret = avctx->hwaccel->decode_params(avctx,
703  nal->type,
704  nal->raw_data,
705  nal->raw_size);
706  if (ret < 0)
707  goto end;
708  }
709  ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
710  nal->size_bits);
711  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
712  goto end;
713  break;
714  case H264_NAL_AUD:
716  case H264_NAL_END_STREAM:
718  case H264_NAL_SPS_EXT:
720  break;
721  default:
722  av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
723  nal->type, nal->size_bits);
724  }
725 
726  if (err < 0) {
727  av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
728  }
729  }
730 
732  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
733  goto end;
734 
735  // set decode_error_flags to allow users to detect concealed decoding errors
736  if ((ret < 0 || h->er.error_occurred) && h->cur_pic_ptr) {
737  h->cur_pic_ptr->f->decode_error_flags |= FF_DECODE_ERROR_DECODE_SLICES;
738  }
739 
740  ret = 0;
741 end:
742 
743 #if CONFIG_ERROR_RESILIENCE
744  /*
745  * FIXME: Error handling code does not seem to support interlaced
746  * when slices span multiple rows
747  * The ff_er_add_slice calls don't work right for bottom
748  * fields; they cause massive erroneous error concealing
749  * Error marking covers both fields (top and bottom).
750  * This causes a mismatched s->error_count
751  * and a bad error table. Further, the error count goes to
752  * INT_MAX when called for bottom field, because mb_y is
753  * past end by one (callers fault) and resync_mb_y != 0
754  * causes problems for the first MB line, too.
755  */
756  if (!FIELD_PICTURE(h) && h->current_slice && h->enable_er) {
757 
758  H264SliceContext *sl = h->slice_ctx;
759  int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
760 
761  ff_h264_set_erpic(&h->er.cur_pic, h->cur_pic_ptr);
762 
763  if (use_last_pic) {
764  ff_h264_set_erpic(&h->er.last_pic, &h->last_pic_for_ec);
765  sl->ref_list[0][0].parent = &h->last_pic_for_ec;
766  memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
767  memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
768  sl->ref_list[0][0].reference = h->last_pic_for_ec.reference;
769  } else if (sl->ref_count[0]) {
770  ff_h264_set_erpic(&h->er.last_pic, sl->ref_list[0][0].parent);
771  } else
772  ff_h264_set_erpic(&h->er.last_pic, NULL);
773 
774  if (sl->ref_count[1])
775  ff_h264_set_erpic(&h->er.next_pic, sl->ref_list[1][0].parent);
776 
777  ff_er_frame_end(&h->er);
778  if (use_last_pic)
779  memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
780  }
781 #endif /* CONFIG_ERROR_RESILIENCE */
782  /* clean up */
783  if (h->cur_pic_ptr && !h->droppable && h->has_slice) {
784  ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
785  h->picture_structure == PICT_BOTTOM_FIELD);
786  }
787 
788  return (ret < 0) ? ret : buf_size;
789 }
790 
791 /**
792  * Return the number of bytes consumed for building the current frame.
793  */
794 static int get_consumed_bytes(int pos, int buf_size)
795 {
796  if (pos == 0)
797  pos = 1; // avoid infinite loops (I doubt that is needed but...)
798  if (pos + 10 > buf_size)
799  pos = buf_size; // oops ;)
800 
801  return pos;
802 }
803 
805 {
806  AVVideoEncParams *par;
807  unsigned int nb_mb = p->mb_height * p->mb_width;
808  unsigned int x, y;
809 
811  if (!par)
812  return AVERROR(ENOMEM);
813 
814  par->qp = p->pps->init_qp;
815 
816  par->delta_qp[1][0] = p->pps->chroma_qp_index_offset[0];
817  par->delta_qp[1][1] = p->pps->chroma_qp_index_offset[0];
818  par->delta_qp[2][0] = p->pps->chroma_qp_index_offset[1];
819  par->delta_qp[2][1] = p->pps->chroma_qp_index_offset[1];
820 
821  for (y = 0; y < p->mb_height; y++)
822  for (x = 0; x < p->mb_width; x++) {
823  const unsigned int block_idx = y * p->mb_width + x;
824  const unsigned int mb_xy = y * p->mb_stride + x;
826 
827  b->src_x = x * 16;
828  b->src_y = y * 16;
829  b->w = 16;
830  b->h = 16;
831 
832  b->delta_qp = p->qscale_table[mb_xy] - par->qp;
833  }
834 
835  return 0;
836 }
837 
838 static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
839 {
840  int ret;
841 
842  ret = av_frame_ref(dst, srcp->needs_fg ? srcp->f_grain : srcp->f);
843  if (ret < 0)
844  return ret;
845 
846  if (srcp->needs_fg && (ret = av_frame_copy_props(dst, srcp->f)) < 0)
847  return ret;
848 
849  av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(&h->sei.common.frame_packing), 0);
850 
851  if (srcp->sei_recovery_frame_cnt == 0)
852  dst->key_frame = 1;
853 
854  if (h->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS) {
855  ret = h264_export_enc_params(dst, srcp);
856  if (ret < 0)
857  goto fail;
858  }
859 
860  if (!(h->avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN))
862 
863  return 0;
864 fail:
865  av_frame_unref(dst);
866  return ret;
867 }
868 
869 static int is_avcc_extradata(const uint8_t *buf, int buf_size)
870 {
871  int cnt= buf[5]&0x1f;
872  const uint8_t *p= buf+6;
873  if (!cnt)
874  return 0;
875  while(cnt--){
876  int nalsize= AV_RB16(p) + 2;
877  if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
878  return 0;
879  p += nalsize;
880  }
881  cnt = *(p++);
882  if(!cnt)
883  return 0;
884  while(cnt--){
885  int nalsize= AV_RB16(p) + 2;
886  if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
887  return 0;
888  p += nalsize;
889  }
890  return 1;
891 }
892 
893 static int finalize_frame(H264Context *h, AVFrame *dst, H264Picture *out, int *got_frame)
894 {
895  int ret;
896 
897  if (((h->avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
898  (h->avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
899  out->recovered)) {
900 
901  if (!h->avctx->hwaccel &&
902  (out->field_poc[0] == INT_MAX ||
903  out->field_poc[1] == INT_MAX)
904  ) {
905  int p;
906  AVFrame *f = out->f;
907  int field = out->field_poc[0] == INT_MAX;
908  uint8_t *dst_data[4];
909  int linesizes[4];
910  const uint8_t *src_data[4];
911 
912  av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
913 
914  for (p = 0; p<4; p++) {
915  dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
916  src_data[p] = f->data[p] + field *f->linesize[p];
917  linesizes[p] = 2*f->linesize[p];
918  }
919 
920  av_image_copy(dst_data, linesizes, src_data, linesizes,
921  f->format, f->width, f->height>>1);
922  }
923 
924  ret = output_frame(h, dst, out);
925  if (ret < 0)
926  return ret;
927 
928  *got_frame = 1;
929 
930  if (CONFIG_MPEGVIDEODEC) {
931  ff_print_debug_info2(h->avctx, dst, NULL,
932  out->mb_type,
933  out->qscale_table,
934  out->motion_val,
935  out->mb_width, out->mb_height, out->mb_stride, 1);
936  }
937  }
938 
939  return 0;
940 }
941 
943  int *got_frame, int buf_index)
944 {
945  int ret, i, out_idx;
946  H264Picture *out = h->delayed_pic[0];
947 
948  h->cur_pic_ptr = NULL;
949  h->first_field = 0;
950 
951  out_idx = 0;
952  for (i = 1;
953  h->delayed_pic[i] &&
954  !h->delayed_pic[i]->f->key_frame &&
955  !h->delayed_pic[i]->mmco_reset;
956  i++)
957  if (h->delayed_pic[i]->poc < out->poc) {
958  out = h->delayed_pic[i];
959  out_idx = i;
960  }
961 
962  for (i = out_idx; h->delayed_pic[i]; i++)
963  h->delayed_pic[i] = h->delayed_pic[i + 1];
964 
965  if (out) {
966  out->reference &= ~DELAYED_PIC_REF;
967  ret = finalize_frame(h, dst_frame, out, got_frame);
968  if (ret < 0)
969  return ret;
970  }
971 
972  return buf_index;
973 }
974 
975 static int h264_decode_frame(AVCodecContext *avctx, AVFrame *pict,
976  int *got_frame, AVPacket *avpkt)
977 {
978  const uint8_t *buf = avpkt->data;
979  int buf_size = avpkt->size;
980  H264Context *h = avctx->priv_data;
981  int buf_index;
982  int ret;
983 
984  h->flags = avctx->flags;
985  h->setup_finished = 0;
986  h->nb_slice_ctx_queued = 0;
987 
988  ff_h264_unref_picture(h, &h->last_pic_for_ec);
989 
990  /* end of stream, output what is still in the buffers */
991  if (buf_size == 0)
992  return send_next_delayed_frame(h, pict, got_frame, 0);
993 
995  size_t side_size;
996  uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
997  ff_h264_decode_extradata(side, side_size,
998  &h->ps, &h->is_avc, &h->nal_length_size,
999  avctx->err_recognition, avctx);
1000  }
1001  if (h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC) {
1002  if (is_avcc_extradata(buf, buf_size))
1003  return ff_h264_decode_extradata(buf, buf_size,
1004  &h->ps, &h->is_avc, &h->nal_length_size,
1005  avctx->err_recognition, avctx);
1006  }
1007 
1008  buf_index = decode_nal_units(h, buf, buf_size);
1009  if (buf_index < 0)
1010  return AVERROR_INVALIDDATA;
1011 
1012  if (!h->cur_pic_ptr && h->nal_unit_type == H264_NAL_END_SEQUENCE) {
1013  av_assert0(buf_index <= buf_size);
1014  return send_next_delayed_frame(h, pict, got_frame, buf_index);
1015  }
1016 
1017  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && (!h->cur_pic_ptr || !h->has_slice)) {
1018  if (avctx->skip_frame >= AVDISCARD_NONREF ||
1019  buf_size >= 4 && !memcmp("Q264", buf, 4))
1020  return buf_size;
1021  av_log(avctx, AV_LOG_ERROR, "no frame!\n");
1022  return AVERROR_INVALIDDATA;
1023  }
1024 
1025  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||
1026  (h->mb_y >= h->mb_height && h->mb_height)) {
1027  if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
1028  return ret;
1029 
1030  /* Wait for second field. */
1031  if (h->next_output_pic) {
1032  ret = finalize_frame(h, pict, h->next_output_pic, got_frame);
1033  if (ret < 0)
1034  return ret;
1035  }
1036  }
1037 
1038  av_assert0(pict->buf[0] || !*got_frame);
1039 
1040  ff_h264_unref_picture(h, &h->last_pic_for_ec);
1041 
1042  return get_consumed_bytes(buf_index, buf_size);
1043 }
1044 
1045 #define OFFSET(x) offsetof(H264Context, x)
1046 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1047 #define VDX VD | AV_OPT_FLAG_EXPORT
1048 static const AVOption h264_options[] = {
1049  { "is_avc", "is avc", OFFSET(is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VDX },
1050  { "nal_length_size", "nal_length_size", OFFSET(nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, VDX },
1051  { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
1052  { "x264_build", "Assume this x264 version if no x264 version found in any SEI", OFFSET(x264_build), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VD },
1053  { NULL },
1054 };
1055 
1056 static const AVClass h264_class = {
1057  .class_name = "H264 Decoder",
1058  .item_name = av_default_item_name,
1059  .option = h264_options,
1060  .version = LIBAVUTIL_VERSION_INT,
1061 };
1062 
1064  .p.name = "h264",
1065  CODEC_LONG_NAME("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1066  .p.type = AVMEDIA_TYPE_VIDEO,
1067  .p.id = AV_CODEC_ID_H264,
1068  .priv_data_size = sizeof(H264Context),
1070  .close = h264_decode_end,
1072  .p.capabilities = AV_CODEC_CAP_DR1 |
1075  .hw_configs = (const AVCodecHWConfigInternal *const []) {
1076 #if CONFIG_H264_DXVA2_HWACCEL
1077  HWACCEL_DXVA2(h264),
1078 #endif
1079 #if CONFIG_H264_D3D11VA_HWACCEL
1080  HWACCEL_D3D11VA(h264),
1081 #endif
1082 #if CONFIG_H264_D3D11VA2_HWACCEL
1083  HWACCEL_D3D11VA2(h264),
1084 #endif
1085 #if CONFIG_H264_NVDEC_HWACCEL
1086  HWACCEL_NVDEC(h264),
1087 #endif
1088 #if CONFIG_H264_VAAPI_HWACCEL
1089  HWACCEL_VAAPI(h264),
1090 #endif
1091 #if CONFIG_H264_VDPAU_HWACCEL
1092  HWACCEL_VDPAU(h264),
1093 #endif
1094 #if CONFIG_H264_VIDEOTOOLBOX_HWACCEL
1095  HWACCEL_VIDEOTOOLBOX(h264),
1096 #endif
1097  NULL
1098  },
1099  .caps_internal = FF_CODEC_CAP_EXPORTS_CROPPING |
1101  .flush = h264_decode_flush,
1104  .p.profiles = NULL_IF_CONFIG_SMALL(ff_h264_profiles),
1105  .p.priv_class = &h264_class,
1106 };
FF_ALLOCZ_TYPED_ARRAY
#define FF_ALLOCZ_TYPED_ARRAY(p, nelem)
Definition: internal.h:97
PICT_FRAME
#define PICT_FRAME
Definition: mpegutils.h:38
AVVideoEncParams::qp
int32_t qp
Base quantisation parameter for the frame.
Definition: video_enc_params.h:103
hwconfig.h
AVCodecContext::hwaccel
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1405
H264SliceContext::mb_xy
int mb_xy
Definition: h264dec.h:224
ff_h264_unref_picture
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:36
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
H264SliceContext::ref_cache
int8_t ref_cache[2][5 *8]
Definition: h264dec.h:292
ff_h264_free_tables
void ff_h264_free_tables(H264Context *h)
Definition: h264dec.c:134
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: defs.h:51
ff_h264_sei_uninit
void ff_h264_sei_uninit(H264SEIContext *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:48
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#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:42
h2645_parse.h
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
AVCodecContext::workaround_bugs
int workaround_bugs
Work around bugs in encoders which sometimes cannot be detected automatically.
Definition: avcodec.h:1311
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const uint16_t ff_h264_mb_sizes[4]
Definition: h264dec.c:55
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AVFrame * f
Definition: h264dec.h:108
ff_h264_ps_uninit
void ff_h264_ps_uninit(H264ParamSets *ps)
Uninit H264 param sets structure.
Definition: h264_ps.c:264
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instantaneous decoder refresh.
Definition: h264dec.c:426
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FILE * out
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const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2888
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static av_cold int h264_decode_init(AVCodecContext *avctx)
Definition: h264dec.c:370
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#define SLICE_FLAG_ALLOW_FIELD
allow draw_horiz_band() with field slices (MPEG-2 field pics)
Definition: avcodec.h:890
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1382
mv
static const int8_t mv[256][2]
Definition: 4xm.c:80
ff_h264_set_erpic
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:196
AV_FRAME_DATA_FILM_GRAIN_PARAMS
@ AV_FRAME_DATA_FILM_GRAIN_PARAMS
Film grain parameters for a frame, described by AVFilmGrainParams.
Definition: frame.h:184
H264Picture::pps
const PPS * pps
Definition: h264dec.h:153
H2645NAL::ref_idc
int ref_idc
H.264 only, nal_ref_idc.
Definition: h2645_parse.h:57
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:99
ff_h264_slice_context_init
void ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init slice context.
Definition: h264dec.c:258
ERContext::mb_index2xy
int * mb_index2xy
Definition: error_resilience.h:59
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:330
HWACCEL_DXVA2
#define HWACCEL_DXVA2(codec)
Definition: hwconfig.h:67
ff_h264_update_thread_context
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:308
AVPacket::data
uint8_t * data
Definition: packet.h:374
AVOption
AVOption.
Definition: opt.h:251
HWACCEL_D3D11VA2
#define HWACCEL_D3D11VA2(codec)
Definition: hwconfig.h:69
ff_h2645_packet_uninit
void ff_h2645_packet_uninit(H2645Packet *pkt)
Free all the allocated memory in the packet.
Definition: h2645_parse.c:528
b
#define b
Definition: input.c:41
H264SliceContext::ref_count
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264dec.h:260
H264SEIGreenMetaData::xsd_metric_value
uint16_t xsd_metric_value
Definition: h264_sei.h:116
H264SEIGreenMetaData::period_type
uint8_t period_type
Definition: h264_sei.h:108
PPS::chroma_qp_index_offset
int chroma_qp_index_offset[2]
Definition: h264_ps.h:116
H264Picture::qscale_table
int8_t * qscale_table
Definition: h264dec.h:114
FFCodec
Definition: codec_internal.h:127
ERContext
Definition: error_resilience.h:53
PICT_BOTTOM_FIELD
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:37
ff_h264_update_thread_context_for_user
int ff_h264_update_thread_context_for_user(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:458
decode_nal_units
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
Definition: h264dec.c:567
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
h264_export_enc_params
static int h264_export_enc_params(AVFrame *f, H264Picture *p)
Definition: h264dec.c:804
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
mpegutils.h
AVFrame::buf
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:539
H264SliceContext::mb_x
int mb_x
Definition: h264dec.h:223
H2645NAL::size_bits
int size_bits
Size, in bits, of just the data, excluding the stop bit and any trailing padding.
Definition: h2645_parse.h:42
ff_h264_decode_picture_parameter_set
int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avctx, H264ParamSets *ps, int bit_length)
Decode PPS.
Definition: h264_ps.c:695
FF_DECODE_ERROR_DECODE_SLICES
#define FF_DECODE_ERROR_DECODE_SLICES
Definition: frame.h:652
H264SliceContext
Definition: h264dec.h:170
golomb.h
exp golomb vlc stuff
AVCodecInternal::is_copy
int is_copy
When using frame-threaded decoding, this field is set for the first worker thread (e....
Definition: internal.h:57
H264SliceContext::mv_cache
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264dec.h:291
AV_CODEC_FLAG_OUTPUT_CORRUPT
#define AV_CODEC_FLAG_OUTPUT_CORRUPT
Output even those frames that might be corrupted.
Definition: avcodec.h:224
debug_green_metadata
static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
Definition: h264dec.c:539
FFCodec::p
AVCodec p
The public AVCodec.
Definition: codec_internal.h:131
H264SEIGreenMetaData::percent_non_zero_macroblocks
uint8_t percent_non_zero_macroblocks
Definition: h264_sei.h:111
H264_NAL_END_SEQUENCE
@ H264_NAL_END_SEQUENCE
Definition: h264.h:44
AVVideoEncParams::delta_qp
int32_t delta_qp[4][2]
Quantisation parameter offset from the base (per-frame) qp for a given plane (first index) and AC/DC ...
Definition: video_enc_params.h:109
H264_NAL_FILLER_DATA
@ H264_NAL_FILLER_DATA
Definition: h264.h:46
AVCodecContext::skip_frame
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:1713
fail
#define fail()
Definition: checkasm.h:134
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1502
ff_h264_sei_decode
int ff_h264_sei_decode(H264SEIContext *h, GetBitContext *gb, const H264ParamSets *ps, void *logctx)
Definition: h264_sei.c:231
H264_NAL_DPA
@ H264_NAL_DPA
Definition: h264.h:36
GetBitContext
Definition: get_bits.h:107
AV_VIDEO_ENC_PARAMS_H264
@ AV_VIDEO_ENC_PARAMS_H264
H.264 stores:
Definition: video_enc_params.h:57
AVFrame::key_frame
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:422
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:506
HWACCEL_VDPAU
#define HWACCEL_VDPAU(codec)
Definition: hwconfig.h:75
H264Picture::mb_stride
int mb_stride
Definition: h264dec.h:156
scan8
static const uint8_t scan8[16 *3+3]
Definition: h264_parse.h:40
ff_h264_flush_change
void ff_h264_flush_change(H264Context *h)
Definition: h264dec.c:439
finalize_frame
static int finalize_frame(H264Context *h, AVFrame *dst, H264Picture *out, int *got_frame)
Definition: h264dec.c:893
H264Picture::f_grain
AVFrame * f_grain
Definition: h264dec.h:111
ff_h264_golomb_to_pict_type
const uint8_t ff_h264_golomb_to_pict_type[5]
Definition: h264data.c:37
H264Ref::data
uint8_t * data[3]
Definition: h264dec.h:160
pack16to32
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264_parse.h:127
AVVideoEncParams
Video encoding parameters for a given frame.
Definition: video_enc_params.h:73
ERContext::mb_num
int mb_num
Definition: error_resilience.h:60
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:87
ERContext::avctx
AVCodecContext * avctx
Definition: error_resilience.h:54
ff_h264_hl_decode_mb
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:799
avassert.h
ff_thread_once
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:184
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
h264_decode_frame
static int h264_decode_frame(AVCodecContext *avctx, AVFrame *pict, int *got_frame, AVPacket *avpkt)
Definition: h264dec.c:975
H264_NAL_DPB
@ H264_NAL_DPB
Definition: h264.h:37
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
h264_free_pic
static void h264_free_pic(H264Context *h, H264Picture *pic)
Definition: h264dec.c:332
av_cold
#define av_cold
Definition: attributes.h:90
init_get_bits8
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:524
ff_thread_report_progress
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
Definition: pthread_frame.c:544
H2645NAL::size
int size
Definition: h2645_parse.h:36
get_last_needed_nal
static int get_last_needed_nal(H264Context *h)
Definition: h264dec.c:485
AVCodecContext::extradata_size
int extradata_size
Definition: avcodec.h:528
ff_h264_queue_decode_slice
int ff_h264_queue_decode_slice(H264Context *h, const H2645NAL *nal)
Submit a slice for decoding.
Definition: h264_slice.c:2019
H264_NAL_AUXILIARY_SLICE
@ H264_NAL_AUXILIARY_SLICE
Definition: h264.h:53
FF_CODEC_DECODE_CB
#define FF_CODEC_DECODE_CB(func)
Definition: codec_internal.h:306
h264_init_pic
static int h264_init_pic(H264Picture *pic)
Definition: h264dec.c:270
h264_decode_end
static av_cold int h264_decode_end(AVCodecContext *avctx)
Definition: h264dec.c:339
get_consumed_bytes
static int get_consumed_bytes(int pos, int buf_size)
Return the number of bytes consumed for building the current frame.
Definition: h264dec.c:794
ff_h264_decode_extradata
int ff_h264_decode_extradata(const uint8_t *data, int size, H264ParamSets *ps, int *is_avc, int *nal_length_size, int err_recognition, void *logctx)
Definition: h264_parse.c:464
H264_NAL_DPC
@ H264_NAL_DPC
Definition: h264.h:38
FIELD_PICTURE
#define FIELD_PICTURE(h)
Definition: h264dec.h:68
AVCodecContext::ticks_per_frame
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:557
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
avpriv_h264_has_num_reorder_frames
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
Definition: h264dec.c:57
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
h264data.h
ff_h264_remove_all_refs
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:564
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
H264Ref::parent
H264Picture * parent
Definition: h264dec.h:167
ERContext::dc_val
int16_t * dc_val[3]
Definition: error_resilience.h:69
H2645NAL::data
const uint8_t * data
Definition: h2645_parse.h:35
field
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this field
Definition: writing_filters.txt:78
ff_h264_decoder
const FFCodec ff_h264_decoder
Definition: h264dec.c:1063
AVHWAccel::decode_params
int(* decode_params)(AVCodecContext *avctx, int type, const uint8_t *buf, uint32_t buf_size)
Callback for parameter data (SPS/PPS/VPS etc).
Definition: avcodec.h:2152
H264Picture::sei_recovery_frame_cnt
int sei_recovery_frame_cnt
Definition: h264dec.h:149
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:79
H2645NAL::type
int type
NAL unit type.
Definition: h2645_parse.h:52
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
AVCodecContext::codec_id
enum AVCodecID codec_id
Definition: avcodec.h:436
ff_h264_draw_horiz_band
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264dec.c:99
if
if(ret)
Definition: filter_design.txt:179
H264_NAL_AUD
@ H264_NAL_AUD
Definition: h264.h:43
AV_CODEC_CAP_FRAME_THREADS
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: codec.h:107
threadframe.h
H264SEIGreenMetaData::percent_alpha_point_deblocking_instance
uint8_t percent_alpha_point_deblocking_instance
Definition: h264_sei.h:114
H2645NAL::raw_size
int raw_size
Definition: h2645_parse.h:44
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AV_ONCE_INIT
#define AV_ONCE_INIT
Definition: thread.h:182
h264_class
static const AVClass h264_class
Definition: h264dec.c:1056
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
h264_er_decode_mb
static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
Definition: h264dec.c:63
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:594
H264SliceContext::edge_emu_buffer
uint8_t * edge_emu_buffer
Definition: h264dec.h:276
AVCodecContext::slice_flags
int slice_flags
slice flags
Definition: avcodec.h:888
h264_init_context
static int h264_init_context(AVCodecContext *avctx, H264Context *h)
Definition: h264dec.c:283
H264Ref::linesize
int linesize[3]
Definition: h264dec.h:161
H264_NAL_SPS_EXT
@ H264_NAL_SPS_EXT
Definition: h264.h:47
AVCodecContext::internal
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:461
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
AV_PICTURE_TYPE_I
@ AV_PICTURE_TYPE_I
Intra.
Definition: avutil.h:274
profiles.h
av_buffer_pool_uninit
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:322
ff_h264_profiles
const AVProfile ff_h264_profiles[]
Definition: profiles.c:58
PPS::init_qp
int init_qp
pic_init_qp_minus26 + 26
Definition: h264_ps.h:114
H264Picture::mb_height
int mb_height
Definition: h264dec.h:155
H264SEIGreenMetaData
Definition: h264_sei.h:106
UPDATE_THREAD_CONTEXT
#define UPDATE_THREAD_CONTEXT(func)
Definition: codec_internal.h:281
H264SliceContext::top_borders_allocated
int top_borders_allocated[2]
Definition: h264dec.h:280
AVOnce
#define AVOnce
Definition: thread.h:181
H264SEIGreenMetaData::percent_intra_coded_macroblocks
uint8_t percent_intra_coded_macroblocks
Definition: h264_sei.h:112
h264_ps.h
h264_vlc_init
static AVOnce h264_vlc_init
Definition: h264dec.c:368
DELAYED_PIC_REF
#define DELAYED_PIC_REF
Value of Picture.reference when Picture is not a reference picture, but is held for delayed output.
Definition: diracdec.c:67
av_video_enc_params_create_side_data
AVVideoEncParams * av_video_enc_params_create_side_data(AVFrame *frame, enum AVVideoEncParamsType type, unsigned int nb_blocks)
Allocates memory for AVEncodeInfoFrame plus an array of.
Definition: video_enc_params.c:58
ERContext::opaque
void * opaque
Definition: error_resilience.h:89
f
f
Definition: af_crystalizer.c:122
H264SEIGreenMetaData::percent_six_tap_filtering
uint8_t percent_six_tap_filtering
Definition: h264_sei.h:113
AVCodecContext::flags2
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:513
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
AVPacket::size
int size
Definition: packet.h:375
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:115
av_frame_ref
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:344
H264_NAL_SEI
@ H264_NAL_SEI
Definition: h264.h:40
h264_options
static const AVOption h264_options[]
Definition: h264dec.c:1048
codec_internal.h
H264SEIGreenMetaData::num_seconds
uint16_t num_seconds
Definition: h264_sei.h:109
rectangle.h
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
FF_CODEC_CAP_EXPORTS_CROPPING
#define FF_CODEC_CAP_EXPORTS_CROPPING
The decoder sets the cropping fields in the output frames manually.
Definition: codec_internal.h:60
AV_NUM_DATA_POINTERS
#define AV_NUM_DATA_POINTERS
Definition: frame.h:331
ERContext::b8_stride
ptrdiff_t b8_stride
Definition: error_resilience.h:63
FF_CODEC_CAP_ALLOCATE_PROGRESS
#define FF_CODEC_CAP_ALLOCATE_PROGRESS
Definition: codec_internal.h:69
H2645NAL::gb
GetBitContext gb
Definition: h2645_parse.h:47
AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:96
H2645NAL
Definition: h2645_parse.h:34
H264SliceContext::top_borders
uint8_t(*[2] top_borders)[(16 *3) *2]
Definition: h264dec.h:277
H264SEIGreenMetaData::green_metadata_type
uint8_t green_metadata_type
Definition: h264_sei.h:107
ERContext::mb_stride
ptrdiff_t mb_stride
Definition: error_resilience.h:62
FF_THREAD_SLICE
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:1514
AVCodecHWConfigInternal
Definition: hwconfig.h:29
H264SliceContext::mb_y
int mb_y
Definition: h264dec.h:223
av_frame_remove_side_data
void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
Remove and free all side data instances of the given type.
Definition: frame.c:782
ff_h2645_packet_split
int ff_h2645_packet_split(H2645Packet *pkt, const uint8_t *buf, int length, void *logctx, int is_nalff, int nal_length_size, enum AVCodecID codec_id, int small_padding, int use_ref)
Split an input packet into NAL units.
Definition: h2645_parse.c:396
height
#define height
ERContext::decode_mb
void(* decode_mb)(void *opaque, int ref, int mv_dir, int mv_type, int(*mv)[2][4][2], int mb_x, int mb_y, int mb_intra, int mb_skipped)
Definition: error_resilience.h:86
VD
#define VD
Definition: av1dec.c:1234
output_frame
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
Definition: h264dec.c:838
AV_CODEC_CAP_SLICE_THREADS
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: codec.h:111
HWACCEL_D3D11VA
#define HWACCEL_D3D11VA(codec)
Definition: hwconfig.h:79
offset
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf offset
Definition: writing_filters.txt:86
HWACCEL_NVDEC
#define HWACCEL_NVDEC(codec)
Definition: hwconfig.h:71
FF_THREAD_FRAME
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:1513
H264SliceContext::mb_mbaff
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264dec.h:235
h264dec.h
ff_h264_decode_seq_parameter_set
int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, H264ParamSets *ps, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:280
H264Picture::needs_fg
int needs_fg
whether picture needs film grain synthesis (see f_grain)
Definition: h264dec.h:150
is_avcc_extradata
static int is_avcc_extradata(const uint8_t *buf, int buf_size)
Definition: h264dec.c:869
H264Context
H264Context.
Definition: h264dec.h:330
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AV_CODEC_FLAG2_SHOW_ALL
#define AV_CODEC_FLAG2_SHOW_ALL
Show all frames before the first keyframe.
Definition: avcodec.h:359
AVCodecContext::extradata
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:527
AVHWAccel::decode_slice
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:2165
av_packet_get_side_data
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, size_t *size)
Get side information from packet.
Definition: avpacket.c:251
ff_h264_execute_decode_slices
int ff_h264_execute_decode_slices(H264Context *h)
Call decode_slice() for each context.
Definition: h264_slice.c:2726
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
H264_NAL_SLICE
@ H264_NAL_SLICE
Definition: h264.h:35
ERContext::mb_width
int mb_width
Definition: error_resilience.h:61
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:478
AVVideoBlockParams
Data structure for storing block-level encoding information.
Definition: video_enc_params.h:120
ff_h264_decode_init_vlc
av_cold void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:325
AVCodec::name
const char * name
Name of the codec implementation.
Definition: codec.h:191
AVCodecContext::height
int height
Definition: avcodec.h:598
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:635
ff_h264_alloc_tables
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264dec.c:179
av_calloc
void * av_calloc(size_t nmemb, size_t size)
Definition: mem.c:262
HWACCEL_VIDEOTOOLBOX
#define HWACCEL_VIDEOTOOLBOX(codec)
Definition: hwconfig.h:77
avcodec.h
ret
ret
Definition: filter_design.txt:187
H2645NAL::raw_data
const uint8_t * raw_data
Definition: h2645_parse.h:45
ERContext::mb_height
int mb_height
Definition: error_resilience.h:61
AVClass::class_name
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:71
H264_NAL_SPS
@ H264_NAL_SPS
Definition: h264.h:41
FMO
#define FMO
Definition: h264dec.h:56
FF_DEBUG_GREEN_MD
#define FF_DEBUG_GREEN_MD
Definition: avcodec.h:1372
pos
unsigned int pos
Definition: spdifenc.c:413
ff_thread_finish_setup
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call ff_thread_finish_setup() afterwards. If some code can 't be moved
AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS
#define AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS
Decoding only.
Definition: avcodec.h:394
AV_CODEC_FLAG2_CHUNKS
#define AV_CODEC_FLAG2_CHUNKS
Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
Definition: avcodec.h:350
AVCodecContext::draw_horiz_band
void(* draw_horiz_band)(struct AVCodecContext *s, const AVFrame *src, int offset[AV_NUM_DATA_POINTERS], int y, int type, int height)
If non NULL, 'draw_horiz_band' is called by the libavcodec decoder to draw a horizontal band.
Definition: avcodec.h:660
OFFSET
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option keep it simple and lowercase description are in without and describe what they for example set the foo of the bar offset is the offset of the field in your see the OFFSET() macro
AVCodecContext
main external API structure.
Definition: avcodec.h:426
AVCodecContext::active_thread_type
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:1521
get_ue_golomb_31
static int get_ue_golomb_31(GetBitContext *gb)
read unsigned exp golomb code, constraint to a max of 31.
Definition: golomb.h:120
av_image_copy
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:422
H264SliceContext::bipred_scratchpad
uint8_t * bipred_scratchpad
Definition: h264dec.h:275
AV_PKT_DATA_NEW_EXTRADATA
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: packet.h:56
error_resilience.h
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
H264Picture::mb_width
int mb_width
Definition: h264dec.h:155
AVFrame::metadata
AVDictionary * metadata
metadata.
Definition: frame.h:639
fill_rectangle
static void fill_rectangle(int x, int y, int w, int h)
Definition: ffplay.c:814
H264Picture
Definition: h264dec.h:107
ERContext::error_status_table
uint8_t * error_status_table
Definition: error_resilience.h:67
ERContext::quarter_sample
int quarter_sample
Definition: error_resilience.h:83
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:112
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:76
PART_NOT_AVAILABLE
#define PART_NOT_AVAILABLE
Definition: h264pred.h:89
ff_h264_field_end
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
Definition: h264_picture.c:219
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1358
H264SliceContext::ref_list
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264dec.h:262
H264SliceContext::non_zero_count_cache
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264dec.h:286
ERContext::er_temp_buffer
uint8_t * er_temp_buffer
Definition: error_resilience.h:68
h264_decode_flush
static void h264_decode_flush(AVCodecContext *avctx)
Definition: h264dec.c:464
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
H264_NAL_END_STREAM
@ H264_NAL_END_STREAM
Definition: h264.h:45
get_ue_golomb_long
static unsigned get_ue_golomb_long(GetBitContext *gb)
Read an unsigned Exp-Golomb code in the range 0 to UINT32_MAX-1.
Definition: golomb.h:104
ff_h264_sei_stereo_mode
const char * ff_h264_sei_stereo_mode(const H2645SEIFramePacking *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:306
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:36
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
H264SliceContext::er
ERContext * er
Definition: h264dec.h:173
AVPacket
This structure stores compressed data.
Definition: packet.h:351
AVCodecContext::priv_data
void * priv_data
Definition: avcodec.h:453
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
ff_er_frame_end
void ff_er_frame_end(ERContext *s)
Definition: error_resilience.c:892
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:86
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
HWACCEL_VAAPI
#define HWACCEL_VAAPI(codec)
Definition: hwconfig.h:73
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:598
h264.h
imgutils.h
H264SliceContext::edge_emu_buffer_allocated
int edge_emu_buffer_allocated
Definition: h264dec.h:279
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
UPDATE_THREAD_CONTEXT_FOR_USER
#define UPDATE_THREAD_CONTEXT_FOR_USER(func)
Definition: codec_internal.h:283
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
av_video_enc_params_block
static av_always_inline AVVideoBlockParams * av_video_enc_params_block(AVVideoEncParams *par, unsigned int idx)
Definition: video_enc_params.h:143
h
h
Definition: vp9dsp_template.c:2038
H264_MAX_PICTURE_COUNT
#define H264_MAX_PICTURE_COUNT
Definition: h264dec.h:50
H264SEIGreenMetaData::num_pictures
uint16_t num_pictures
Definition: h264_sei.h:110
H264SliceContext::bipred_scratchpad_allocated
int bipred_scratchpad_allocated
Definition: h264dec.h:278
H264_NAL_IDR_SLICE
@ H264_NAL_IDR_SLICE
Definition: h264.h:39
AVDISCARD_NONREF
@ AVDISCARD_NONREF
discard all non reference
Definition: defs.h:72
int
int
Definition: ffmpeg_filter.c:156
H264_NAL_PPS
@ H264_NAL_PPS
Definition: h264.h:42
send_next_delayed_frame
static int send_next_delayed_frame(H264Context *h, AVFrame *dst_frame, int *got_frame, int buf_index)
Definition: h264dec.c:942
H264Ref::reference
int reference
Definition: h264dec.h:163
AV_CODEC_EXPORT_DATA_FILM_GRAIN
#define AV_CODEC_EXPORT_DATA_FILM_GRAIN
Decoding only.
Definition: avcodec.h:399
video_enc_params.h
ff_print_debug_info2
void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, const uint8_t *mbskip_table, const uint32_t *mbtype_table, const int8_t *qscale_table, int16_t(*const motion_val[2])[2], int mb_width, int mb_height, int mb_stride, int quarter_sample)
Print debugging info for the given picture.
Definition: mpegutils.c:157
AV_RB16
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_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:98
H264SliceContext::mb_field_decoding_flag
int mb_field_decoding_flag
Definition: h264dec.h:234
H264SEIGreenMetaData::xsd_metric_type
uint8_t xsd_metric_type
Definition: h264_sei.h:115