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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 "libavutil/avassert.h"
31 #include "libavutil/display.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/stereo3d.h"
35 #include "libavutil/timer.h"
36 #include "internal.h"
37 #include "bytestream.h"
38 #include "cabac.h"
39 #include "cabac_functions.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 "h264chroma.h"
47 #include "h264_mvpred.h"
48 #include "h264_ps.h"
49 #include "golomb.h"
50 #include "mathops.h"
51 #include "me_cmp.h"
52 #include "mpegutils.h"
53 #include "profiles.h"
54 #include "rectangle.h"
55 #include "thread.h"
56 #include "vdpau_compat.h"
57 
58 static int h264_decode_end(AVCodecContext *avctx);
59 
60 const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
61 
63 {
64  H264Context *h = avctx->priv_data;
65  return h && h->ps.sps ? h->ps.sps->num_reorder_frames : 0;
66 }
67 
68 static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
69  int (*mv)[2][4][2],
70  int mb_x, int mb_y, int mb_intra, int mb_skipped)
71 {
72  H264Context *h = opaque;
73  H264SliceContext *sl = &h->slice_ctx[0];
74 
75  sl->mb_x = mb_x;
76  sl->mb_y = mb_y;
77  sl->mb_xy = mb_x + mb_y * h->mb_stride;
78  memset(sl->non_zero_count_cache, 0, sizeof(sl->non_zero_count_cache));
79  av_assert1(ref >= 0);
80  /* FIXME: It is possible albeit uncommon that slice references
81  * differ between slices. We take the easy approach and ignore
82  * it for now. If this turns out to have any relevance in
83  * practice then correct remapping should be added. */
84  if (ref >= sl->ref_count[0])
85  ref = 0;
86  if (!sl->ref_list[0][ref].data[0]) {
87  av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
88  ref = 0;
89  }
90  if ((sl->ref_list[0][ref].reference&3) != 3) {
91  av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
92  return;
93  }
94  fill_rectangle(&h->cur_pic.ref_index[0][4 * sl->mb_xy],
95  2, 2, 2, ref, 1);
96  fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
97  fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8,
98  pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
99  sl->mb_mbaff =
100  sl->mb_field_decoding_flag = 0;
101  ff_h264_hl_decode_mb(h, &h->slice_ctx[0]);
102 }
103 
105  int y, int height)
106 {
107  AVCodecContext *avctx = h->avctx;
108  const AVFrame *src = h->cur_pic.f;
110  int vshift = desc->log2_chroma_h;
111  const int field_pic = h->picture_structure != PICT_FRAME;
112  if (field_pic) {
113  height <<= 1;
114  y <<= 1;
115  }
116 
117  height = FFMIN(height, avctx->height - y);
118 
119  if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
120  return;
121 
122  if (avctx->draw_horiz_band) {
124  int i;
125 
126  offset[0] = y * src->linesize[0];
127  offset[1] =
128  offset[2] = (y >> vshift) * src->linesize[1];
129  for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
130  offset[i] = 0;
131 
132  emms_c();
133 
134  avctx->draw_horiz_band(avctx, src, offset,
135  y, h->picture_structure, height);
136  }
137 }
138 
140 {
141  int i;
142 
145  av_freep(&h->cbp_table);
146  av_freep(&h->mvd_table[0]);
147  av_freep(&h->mvd_table[1]);
148  av_freep(&h->direct_table);
151  h->slice_table = NULL;
152  av_freep(&h->list_counts);
153 
154  av_freep(&h->mb2b_xy);
155  av_freep(&h->mb2br_xy);
156 
161 
162  for (i = 0; i < h->nb_slice_ctx; i++) {
163  H264SliceContext *sl = &h->slice_ctx[i];
164 
165  av_freep(&sl->dc_val_base);
166  av_freep(&sl->er.mb_index2xy);
168  av_freep(&sl->er.er_temp_buffer);
169 
172  av_freep(&sl->top_borders[0]);
173  av_freep(&sl->top_borders[1]);
174 
177  sl->top_borders_allocated[0] = 0;
178  sl->top_borders_allocated[1] = 0;
179  }
180 }
181 
183 {
184  const int big_mb_num = h->mb_stride * (h->mb_height + 1);
185  const int row_mb_num = 2*h->mb_stride*FFMAX(h->nb_slice_ctx, 1);
186  int x, y;
187 
189  row_mb_num, 8 * sizeof(uint8_t), fail)
191 
193  big_mb_num * 48 * sizeof(uint8_t), fail)
195  (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
197  big_mb_num * sizeof(uint16_t), fail)
199  big_mb_num * sizeof(uint8_t), fail)
201  row_mb_num, 16 * sizeof(uint8_t), fail);
203  row_mb_num, 16 * sizeof(uint8_t), fail);
204  h->slice_ctx[0].mvd_table[0] = h->mvd_table[0];
205  h->slice_ctx[0].mvd_table[1] = h->mvd_table[1];
206 
208  4 * big_mb_num * sizeof(uint8_t), fail);
210  big_mb_num * sizeof(uint8_t), fail)
211 
212  memset(h->slice_table_base, -1,
213  (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
214  h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
215 
217  big_mb_num * sizeof(uint32_t), fail);
219  big_mb_num * sizeof(uint32_t), fail);
220  for (y = 0; y < h->mb_height; y++)
221  for (x = 0; x < h->mb_width; x++) {
222  const int mb_xy = x + y * h->mb_stride;
223  const int b_xy = 4 * x + 4 * y * h->b_stride;
224 
225  h->mb2b_xy[mb_xy] = b_xy;
226  h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
227  }
228 
229  return 0;
230 
231 fail:
233  return AVERROR(ENOMEM);
234 }
235 
236 /**
237  * Init context
238  * Allocate buffers which are not shared amongst multiple threads.
239  */
241 {
242  ERContext *er = &sl->er;
243  int mb_array_size = h->mb_height * h->mb_stride;
244  int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
245  int c_size = h->mb_stride * (h->mb_height + 1);
246  int yc_size = y_size + 2 * c_size;
247  int x, y, i;
248 
249  sl->ref_cache[0][scan8[5] + 1] =
250  sl->ref_cache[0][scan8[7] + 1] =
251  sl->ref_cache[0][scan8[13] + 1] =
252  sl->ref_cache[1][scan8[5] + 1] =
253  sl->ref_cache[1][scan8[7] + 1] =
254  sl->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
255 
256  if (sl != h->slice_ctx) {
257  memset(er, 0, sizeof(*er));
258  } else
259  if (CONFIG_ERROR_RESILIENCE) {
260 
261  /* init ER */
262  er->avctx = h->avctx;
264  er->opaque = h;
265  er->quarter_sample = 1;
266 
267  er->mb_num = h->mb_num;
268  er->mb_width = h->mb_width;
269  er->mb_height = h->mb_height;
270  er->mb_stride = h->mb_stride;
271  er->b8_stride = h->mb_width * 2 + 1;
272 
273  // error resilience code looks cleaner with this
275  (h->mb_num + 1) * sizeof(int), fail);
276 
277  for (y = 0; y < h->mb_height; y++)
278  for (x = 0; x < h->mb_width; x++)
279  er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
280 
281  er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
282  h->mb_stride + h->mb_width;
283 
285  mb_array_size * sizeof(uint8_t), fail);
286 
288  h->mb_height * h->mb_stride, fail);
289 
291  yc_size * sizeof(int16_t), fail);
292  er->dc_val[0] = sl->dc_val_base + h->mb_width * 2 + 2;
293  er->dc_val[1] = sl->dc_val_base + y_size + h->mb_stride + 1;
294  er->dc_val[2] = er->dc_val[1] + c_size;
295  for (i = 0; i < yc_size; i++)
296  sl->dc_val_base[i] = 1024;
297  }
298 
299  return 0;
300 
301 fail:
302  return AVERROR(ENOMEM); // ff_h264_free_tables will clean up for us
303 }
304 
306 {
307  int i;
308 
309  h->avctx = avctx;
310  h->backup_width = -1;
311  h->backup_height = -1;
313  h->cur_chroma_format_idc = -1;
314 
316  h->workaround_bugs = avctx->workaround_bugs;
317  h->flags = avctx->flags;
318  h->poc.prev_poc_msb = 1 << 16;
319  h->recovery_frame = -1;
320  h->frame_recovered = 0;
321  h->poc.prev_frame_num = -1;
323  h->sei.unregistered.x264_build = -1;
324 
325  h->next_outputed_poc = INT_MIN;
326  for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
327  h->last_pocs[i] = INT_MIN;
328 
329  ff_h264_sei_uninit(&h->sei);
330 
332 
333  h->nb_slice_ctx = (avctx->active_thread_type & FF_THREAD_SLICE) ? avctx->thread_count : 1;
334  h->slice_ctx = av_mallocz_array(h->nb_slice_ctx, sizeof(*h->slice_ctx));
335  if (!h->slice_ctx) {
336  h->nb_slice_ctx = 0;
337  return AVERROR(ENOMEM);
338  }
339 
340  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
341  h->DPB[i].f = av_frame_alloc();
342  if (!h->DPB[i].f)
343  return AVERROR(ENOMEM);
344  }
345 
346  h->cur_pic.f = av_frame_alloc();
347  if (!h->cur_pic.f)
348  return AVERROR(ENOMEM);
349 
351  if (!h->last_pic_for_ec.f)
352  return AVERROR(ENOMEM);
353 
354  for (i = 0; i < h->nb_slice_ctx; i++)
355  h->slice_ctx[i].h264 = h;
356 
357  return 0;
358 }
359 
361 {
362  H264Context *h = avctx->priv_data;
363  int i;
364 
367 
368  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++) {
369  ff_h264_unref_picture(h, &h->DPB[i]);
370  av_frame_free(&h->DPB[i].f);
371  }
372  memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
373 
374  h->cur_pic_ptr = NULL;
375 
376  av_freep(&h->slice_ctx);
377  h->nb_slice_ctx = 0;
378 
379  ff_h264_sei_uninit(&h->sei);
380  ff_h264_ps_uninit(&h->ps);
381 
383 
385  av_frame_free(&h->cur_pic.f);
388 
389  return 0;
390 }
391 
393 
395 {
396  H264Context *h = avctx->priv_data;
397  int ret;
398 
399  ret = h264_init_context(avctx, h);
400  if (ret < 0)
401  return ret;
402 
403  ret = ff_thread_once(&h264_vlc_init, ff_h264_decode_init_vlc);
404  if (ret != 0) {
405  av_log(avctx, AV_LOG_ERROR, "pthread_once has failed.");
406  return AVERROR_UNKNOWN;
407  }
408 
409  if (avctx->ticks_per_frame == 1) {
410  if(h->avctx->time_base.den < INT_MAX/2) {
411  h->avctx->time_base.den *= 2;
412  } else
413  h->avctx->time_base.num /= 2;
414  }
415  avctx->ticks_per_frame = 2;
416 
417  if (avctx->extradata_size > 0 && avctx->extradata) {
419  &h->ps, &h->is_avc, &h->nal_length_size,
420  avctx->err_recognition, avctx);
421  if (ret < 0) {
422  h264_decode_end(avctx);
423  return ret;
424  }
425  }
426 
427  if (h->ps.sps && h->ps.sps->bitstream_restriction_flag &&
430  }
431 
432  avctx->internal->allocate_progress = 1;
433 
435 
436  if (h->enable_er < 0 && (avctx->active_thread_type & FF_THREAD_SLICE))
437  h->enable_er = 0;
438 
439  if (h->enable_er && (avctx->active_thread_type & FF_THREAD_SLICE)) {
440  av_log(avctx, AV_LOG_WARNING,
441  "Error resilience with slice threads is enabled. It is unsafe and unsupported and may crash. "
442  "Use it at your own risk\n");
443  }
444 
445  return 0;
446 }
447 
448 #if HAVE_THREADS
449 static int decode_init_thread_copy(AVCodecContext *avctx)
450 {
451  H264Context *h = avctx->priv_data;
452  int ret;
453 
454  if (!avctx->internal->is_copy)
455  return 0;
456 
457  memset(h, 0, sizeof(*h));
458 
459  ret = h264_init_context(avctx, h);
460  if (ret < 0)
461  return ret;
462 
463  h->context_initialized = 0;
464 
465  return 0;
466 }
467 #endif
468 
469 /**
470  * Run setup operations that must be run after slice header decoding.
471  * This includes finding the next displayed frame.
472  *
473  * @param h h264 master context
474  * @param setup_finished enough NALs have been read that we can call
475  * ff_thread_finish_setup()
476  */
477 static void decode_postinit(H264Context *h, int setup_finished)
478 {
479  const SPS *sps = h->ps.sps;
481  H264Picture *cur = h->cur_pic_ptr;
482  int i, pics, out_of_order, out_idx;
483 
484  if (h->next_output_pic)
485  return;
486 
487  if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) {
488  /* FIXME: if we have two PAFF fields in one packet, we can't start
489  * the next thread here. If we have one field per packet, we can.
490  * The check in decode_nal_units() is not good enough to find this
491  * yet, so we assume the worst for now. */
492  // if (setup_finished)
493  // ff_thread_finish_setup(h->avctx);
494  if (cur->field_poc[0] == INT_MAX && cur->field_poc[1] == INT_MAX)
495  return;
496  if (h->avctx->hwaccel || h->missing_fields <=1)
497  return;
498  }
499 
500  cur->mmco_reset = h->mmco_reset;
501  h->mmco_reset = 0;
502 
503  // FIXME do something with unavailable reference frames
504 
505  /* Sort B-frames into display order */
506  if (sps->bitstream_restriction_flag ||
509  }
510 
511  for (i = 0; 1; i++) {
512  if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
513  if(i)
514  h->last_pocs[i-1] = cur->poc;
515  break;
516  } else if(i) {
517  h->last_pocs[i-1]= h->last_pocs[i];
518  }
519  }
520  out_of_order = MAX_DELAYED_PIC_COUNT - i;
521  if( cur->f->pict_type == AV_PICTURE_TYPE_B
523  out_of_order = FFMAX(out_of_order, 1);
524  if (out_of_order == MAX_DELAYED_PIC_COUNT) {
525  av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
526  for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
527  h->last_pocs[i] = INT_MIN;
528  h->last_pocs[0] = cur->poc;
529  cur->mmco_reset = 1;
530  } else if(h->avctx->has_b_frames < out_of_order && !sps->bitstream_restriction_flag){
531  int loglevel = h->avctx->frame_number > 1 ? AV_LOG_WARNING : AV_LOG_VERBOSE;
532  av_log(h->avctx, loglevel, "Increasing reorder buffer to %d\n", out_of_order);
533  h->avctx->has_b_frames = out_of_order;
534  }
535 
536  pics = 0;
537  while (h->delayed_pic[pics])
538  pics++;
539 
541 
542  h->delayed_pic[pics++] = cur;
543  if (cur->reference == 0)
544  cur->reference = DELAYED_PIC_REF;
545 
546  out = h->delayed_pic[0];
547  out_idx = 0;
548  for (i = 1; h->delayed_pic[i] &&
549  !h->delayed_pic[i]->f->key_frame &&
550  !h->delayed_pic[i]->mmco_reset;
551  i++)
552  if (h->delayed_pic[i]->poc < out->poc) {
553  out = h->delayed_pic[i];
554  out_idx = i;
555  }
556  if (h->avctx->has_b_frames == 0 &&
557  (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset))
558  h->next_outputed_poc = INT_MIN;
559  out_of_order = out->poc < h->next_outputed_poc;
560 
561  if (out_of_order || pics > h->avctx->has_b_frames) {
562  out->reference &= ~DELAYED_PIC_REF;
563  for (i = out_idx; h->delayed_pic[i]; i++)
564  h->delayed_pic[i] = h->delayed_pic[i + 1];
565  }
566  if (!out_of_order && pics > h->avctx->has_b_frames) {
567  h->next_output_pic = out;
568  if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f->key_frame || h->delayed_pic[0]->mmco_reset)) {
569  h->next_outputed_poc = INT_MIN;
570  } else
571  h->next_outputed_poc = out->poc;
572  } else {
573  av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
574  }
575 
576  if (h->next_output_pic) {
577  if (h->next_output_pic->recovered) {
578  // We have reached an recovery point and all frames after it in
579  // display order are "recovered".
581  }
583  }
584 
585  if (setup_finished && !h->avctx->hwaccel) {
587 
589  h->setup_finished = 1;
590  }
591 }
592 
593 /**
594  * instantaneous decoder refresh.
595  */
596 static void idr(H264Context *h)
597 {
598  int i;
600  h->poc.prev_frame_num =
601  h->poc.prev_frame_num_offset = 0;
602  h->poc.prev_poc_msb = 1<<16;
603  h->poc.prev_poc_lsb = 0;
604  for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
605  h->last_pocs[i] = INT_MIN;
606 }
607 
608 /* forget old pics after a seek */
610 {
611  int i, j;
612 
613  h->next_outputed_poc = INT_MIN;
614  h->prev_interlaced_frame = 1;
615  idr(h);
616 
617  h->poc.prev_frame_num = -1;
618  if (h->cur_pic_ptr) {
619  h->cur_pic_ptr->reference = 0;
620  for (j=i=0; h->delayed_pic[i]; i++)
621  if (h->delayed_pic[i] != h->cur_pic_ptr)
622  h->delayed_pic[j++] = h->delayed_pic[i];
623  h->delayed_pic[j] = NULL;
624  }
626 
627  h->first_field = 0;
628  ff_h264_sei_uninit(&h->sei);
629  h->recovery_frame = -1;
630  h->frame_recovered = 0;
631  h->current_slice = 0;
632  h->mmco_reset = 1;
633 }
634 
635 /* forget old pics after a seek */
636 static void flush_dpb(AVCodecContext *avctx)
637 {
638  H264Context *h = avctx->priv_data;
639  int i;
640 
641  memset(h->delayed_pic, 0, sizeof(h->delayed_pic));
642 
644 
645  for (i = 0; i < H264_MAX_PICTURE_COUNT; i++)
646  ff_h264_unref_picture(h, &h->DPB[i]);
647  h->cur_pic_ptr = NULL;
649 
650  h->mb_y = 0;
651 
653  h->context_initialized = 0;
654 }
655 
656 #if FF_API_CAP_VDPAU
657 static const uint8_t start_code[] = { 0x00, 0x00, 0x01 };
658 #endif
659 
661 {
662  int nals_needed = 0;
663  int first_slice = 0;
664  int i;
665  int ret;
666 
667  for (i = 0; i < h->pkt.nb_nals; i++) {
668  H2645NAL *nal = &h->pkt.nals[i];
669  GetBitContext gb;
670 
671  /* packets can sometimes contain multiple PPS/SPS,
672  * e.g. two PAFF field pictures in one packet, or a demuxer
673  * which splits NALs strangely if so, when frame threading we
674  * can't start the next thread until we've read all of them */
675  switch (nal->type) {
676  case H264_NAL_SPS:
677  case H264_NAL_PPS:
678  nals_needed = i;
679  break;
680  case H264_NAL_DPA:
681  case H264_NAL_IDR_SLICE:
682  case H264_NAL_SLICE:
683  ret = init_get_bits8(&gb, nal->data + 1, (nal->size - 1));
684  if (ret < 0)
685  return ret;
686  if (!get_ue_golomb_long(&gb) || // first_mb_in_slice
687  !first_slice ||
688  first_slice != nal->type)
689  nals_needed = i;
690  if (!first_slice)
691  first_slice = nal->type;
692  }
693  }
694 
695  return nals_needed;
696 }
697 
698 static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
699 {
700  av_log(logctx, AV_LOG_DEBUG, "Green Metadata Info SEI message\n");
701  av_log(logctx, AV_LOG_DEBUG, " green_metadata_type: %d\n", gm->green_metadata_type);
702 
703  if (gm->green_metadata_type == 0) {
704  av_log(logctx, AV_LOG_DEBUG, " green_metadata_period_type: %d\n", gm->period_type);
705 
706  if (gm->period_type == 2)
707  av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_seconds: %d\n", gm->num_seconds);
708  else if (gm->period_type == 3)
709  av_log(logctx, AV_LOG_DEBUG, " green_metadata_num_pictures: %d\n", gm->num_pictures);
710 
711  av_log(logctx, AV_LOG_DEBUG, " SEI GREEN Complexity Metrics: %f %f %f %f\n",
712  (float)gm->percent_non_zero_macroblocks/255,
713  (float)gm->percent_intra_coded_macroblocks/255,
714  (float)gm->percent_six_tap_filtering/255,
716 
717  } else if (gm->green_metadata_type == 1) {
718  av_log(logctx, AV_LOG_DEBUG, " xsd_metric_type: %d\n", gm->xsd_metric_type);
719 
720  if (gm->xsd_metric_type == 0)
721  av_log(logctx, AV_LOG_DEBUG, " xsd_metric_value: %f\n",
722  (float)gm->xsd_metric_value/100);
723  }
724 }
725 
726 static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
727 {
728  AVCodecContext *const avctx = h->avctx;
729  unsigned context_count = 0;
730  int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
731  int idr_cleared=0;
732  int i, ret = 0;
733 
734  h->nal_unit_type= 0;
735 
736  h->max_contexts = h->nb_slice_ctx;
737  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)) {
738  h->current_slice = 0;
739  if (!h->first_field)
740  h->cur_pic_ptr = NULL;
741  ff_h264_sei_uninit(&h->sei);
742  }
743 
744  if (h->nal_length_size == 4) {
745  if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
746  h->is_avc = 0;
747  }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
748  h->is_avc = 1;
749  }
750 
751  ret = ff_h2645_packet_split(&h->pkt, buf, buf_size, avctx, h->is_avc,
752  h->nal_length_size, avctx->codec_id, avctx->flags2 & AV_CODEC_FLAG2_FAST);
753  if (ret < 0) {
754  av_log(avctx, AV_LOG_ERROR,
755  "Error splitting the input into NAL units.\n");
756  return ret;
757  }
758 
759  if (avctx->active_thread_type & FF_THREAD_FRAME)
760  nals_needed = get_last_needed_nal(h);
761  if (nals_needed < 0)
762  return nals_needed;
763 
764  for (i = 0; i < h->pkt.nb_nals; i++) {
765  H2645NAL *nal = &h->pkt.nals[i];
766  H264SliceContext *sl = &h->slice_ctx[context_count];
767  int err;
768 
769  if (avctx->skip_frame >= AVDISCARD_NONREF &&
770  nal->ref_idc == 0 && nal->type != H264_NAL_SEI)
771  continue;
772 
773 again:
774  // FIXME these should stop being context-global variables
775  h->nal_ref_idc = nal->ref_idc;
776  h->nal_unit_type = nal->type;
777 
778  err = 0;
779  switch (nal->type) {
780  case H264_NAL_IDR_SLICE:
781  if ((nal->data[1] & 0xFC) == 0x98) {
782  av_log(h->avctx, AV_LOG_ERROR, "Invalid inter IDR frame\n");
783  h->next_outputed_poc = INT_MIN;
784  ret = -1;
785  goto end;
786  }
787  if(!idr_cleared) {
788  if (h->current_slice && (avctx->active_thread_type & FF_THREAD_SLICE)) {
789  av_log(h, AV_LOG_ERROR, "invalid mixed IDR / non IDR frames cannot be decoded in slice multithreading mode\n");
790  ret = AVERROR_INVALIDDATA;
791  goto end;
792  }
793  idr(h); // FIXME ensure we don't lose some frames if there is reordering
794  }
795  idr_cleared = 1;
796  h->has_recovery_point = 1;
797  case H264_NAL_SLICE:
798  sl->gb = nal->gb;
799 
800  if ((err = ff_h264_decode_slice_header(h, sl, nal)))
801  break;
802 
803  if (sl->redundant_pic_count > 0)
804  break;
805 
806  if (h->current_slice == 1) {
807  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS))
808  decode_postinit(h, i >= nals_needed);
809 
810  if (h->avctx->hwaccel &&
811  (ret = h->avctx->hwaccel->start_frame(h->avctx, buf, buf_size)) < 0)
812  goto end;
813 #if FF_API_CAP_VDPAU
814  if (CONFIG_H264_VDPAU_DECODER &&
817 #endif
818  }
819 
820  if (avctx->hwaccel) {
821  ret = avctx->hwaccel->decode_slice(avctx,
822  nal->raw_data,
823  nal->raw_size);
824  if (ret < 0)
825  goto end;
826 #if FF_API_CAP_VDPAU
827  } else if (CONFIG_H264_VDPAU_DECODER &&
830  start_code,
831  sizeof(start_code));
833  nal->raw_data,
834  nal->raw_size);
835 #endif
836  } else
837  context_count++;
838  break;
839  case H264_NAL_DPA:
840  case H264_NAL_DPB:
841  case H264_NAL_DPC:
842  avpriv_request_sample(avctx, "data partitioning");
843  break;
844  case H264_NAL_SEI:
845  ret = ff_h264_sei_decode(&h->sei, &nal->gb, &h->ps, avctx);
847  if (avctx->debug & FF_DEBUG_GREEN_MD)
849 #if FF_API_AFD
853 #endif /* FF_API_AFD */
854  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
855  goto end;
856  break;
857  case H264_NAL_SPS: {
858  GetBitContext tmp_gb = nal->gb;
859  if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
860  break;
862  "SPS decoding failure, trying again with the complete NAL\n");
863  init_get_bits8(&tmp_gb, nal->raw_data + 1, nal->raw_size - 1);
864  if (ff_h264_decode_seq_parameter_set(&tmp_gb, avctx, &h->ps, 0) >= 0)
865  break;
866  ff_h264_decode_seq_parameter_set(&nal->gb, avctx, &h->ps, 1);
867  break;
868  }
869  case H264_NAL_PPS:
870  ret = ff_h264_decode_picture_parameter_set(&nal->gb, avctx, &h->ps,
871  nal->size_bits);
872  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
873  goto end;
874  break;
875  case H264_NAL_AUD:
877  case H264_NAL_END_STREAM:
879  case H264_NAL_SPS_EXT:
881  break;
882  default:
883  av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
884  nal->type, nal->size_bits);
885  }
886 
887  if (context_count == h->max_contexts) {
888  ret = ff_h264_execute_decode_slices(h, context_count);
889  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
890  goto end;
891  context_count = 0;
892  }
893 
894  if (err < 0 || err == SLICE_SKIPED) {
895  if (err < 0)
896  av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
897  sl->ref_count[0] = sl->ref_count[1] = sl->list_count = 0;
898  } else if (err == SLICE_SINGLETHREAD) {
899  if (context_count > 0) {
900  ret = ff_h264_execute_decode_slices(h, context_count);
901  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
902  goto end;
903  context_count = 0;
904  }
905  /* Slice could not be decoded in parallel mode, restart. */
906  sl = &h->slice_ctx[0];
907  goto again;
908  }
909  }
910  if (context_count) {
911  ret = ff_h264_execute_decode_slices(h, context_count);
912  if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
913  goto end;
914  }
915 
916  ret = 0;
917 end:
918 
919 #if CONFIG_ERROR_RESILIENCE
920  /*
921  * FIXME: Error handling code does not seem to support interlaced
922  * when slices span multiple rows
923  * The ff_er_add_slice calls don't work right for bottom
924  * fields; they cause massive erroneous error concealing
925  * Error marking covers both fields (top and bottom).
926  * This causes a mismatched s->error_count
927  * and a bad error table. Further, the error count goes to
928  * INT_MAX when called for bottom field, because mb_y is
929  * past end by one (callers fault) and resync_mb_y != 0
930  * causes problems for the first MB line, too.
931  */
932  if (!FIELD_PICTURE(h) && h->current_slice &&
933  h->ps.sps == (const SPS*)h->ps.sps_list[h->ps.pps->sps_id]->data &&
934  h->enable_er) {
935 
936  H264SliceContext *sl = h->slice_ctx;
937  int use_last_pic = h->last_pic_for_ec.f->buf[0] && !sl->ref_count[0];
938 
940 
941  if (use_last_pic) {
943  sl->ref_list[0][0].parent = &h->last_pic_for_ec;
944  memcpy(sl->ref_list[0][0].data, h->last_pic_for_ec.f->data, sizeof(sl->ref_list[0][0].data));
945  memcpy(sl->ref_list[0][0].linesize, h->last_pic_for_ec.f->linesize, sizeof(sl->ref_list[0][0].linesize));
947  } else if (sl->ref_count[0]) {
948  ff_h264_set_erpic(&sl->er.last_pic, sl->ref_list[0][0].parent);
949  } else
951 
952  if (sl->ref_count[1])
953  ff_h264_set_erpic(&sl->er.next_pic, sl->ref_list[1][0].parent);
954 
955  sl->er.ref_count = sl->ref_count[0];
956 
957  ff_er_frame_end(&sl->er);
958  if (use_last_pic)
959  memset(&sl->ref_list[0][0], 0, sizeof(sl->ref_list[0][0]));
960  }
961 #endif /* CONFIG_ERROR_RESILIENCE */
962  /* clean up */
963  if (h->cur_pic_ptr && !h->droppable) {
966  }
967 
968  return (ret < 0) ? ret : buf_size;
969 }
970 
971 /**
972  * Return the number of bytes consumed for building the current frame.
973  */
974 static int get_consumed_bytes(int pos, int buf_size)
975 {
976  if (pos == 0)
977  pos = 1; // avoid infinite loops (I doubt that is needed but...)
978  if (pos + 10 > buf_size)
979  pos = buf_size; // oops ;)
980 
981  return pos;
982 }
983 
985 {
986  AVFrame *src = srcp->f;
988  int i;
989  int ret = av_frame_ref(dst, src);
990  if (ret < 0)
991  return ret;
992 
993  av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(&h->sei.frame_packing), 0);
994 
995  h->backup_width = h->avctx->width;
996  h->backup_height = h->avctx->height;
997  h->backup_pix_fmt = h->avctx->pix_fmt;
998 
999  h->avctx->width = dst->width;
1000  h->avctx->height = dst->height;
1001  h->avctx->pix_fmt = dst->format;
1002 
1003  if (srcp->sei_recovery_frame_cnt == 0)
1004  dst->key_frame = 1;
1005  if (!srcp->crop)
1006  return 0;
1007 
1008  for (i = 0; i < desc->nb_components; i++) {
1009  int hshift = (i > 0) ? desc->log2_chroma_w : 0;
1010  int vshift = (i > 0) ? desc->log2_chroma_h : 0;
1011  int off = ((srcp->crop_left >> hshift) << h->pixel_shift) +
1012  (srcp->crop_top >> vshift) * dst->linesize[i];
1013  dst->data[i] += off;
1014  }
1015  return 0;
1016 }
1017 
1018 static int is_extra(const uint8_t *buf, int buf_size)
1019 {
1020  int cnt= buf[5]&0x1f;
1021  const uint8_t *p= buf+6;
1022  while(cnt--){
1023  int nalsize= AV_RB16(p) + 2;
1024  if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 7)
1025  return 0;
1026  p += nalsize;
1027  }
1028  cnt = *(p++);
1029  if(!cnt)
1030  return 0;
1031  while(cnt--){
1032  int nalsize= AV_RB16(p) + 2;
1033  if(nalsize > buf_size - (p-buf) || (p[2] & 0x9F) != 8)
1034  return 0;
1035  p += nalsize;
1036  }
1037  return 1;
1038 }
1039 
1040 static int h264_decode_frame(AVCodecContext *avctx, void *data,
1041  int *got_frame, AVPacket *avpkt)
1042 {
1043  const uint8_t *buf = avpkt->data;
1044  int buf_size = avpkt->size;
1045  H264Context *h = avctx->priv_data;
1046  AVFrame *pict = data;
1047  int buf_index = 0;
1048  H264Picture *out;
1049  int i, out_idx;
1050  int ret;
1051 
1052  h->flags = avctx->flags;
1053  h->setup_finished = 0;
1054 
1055  if (h->backup_width != -1) {
1056  avctx->width = h->backup_width;
1057  h->backup_width = -1;
1058  }
1059  if (h->backup_height != -1) {
1060  avctx->height = h->backup_height;
1061  h->backup_height = -1;
1062  }
1063  if (h->backup_pix_fmt != AV_PIX_FMT_NONE) {
1064  avctx->pix_fmt = h->backup_pix_fmt;
1066  }
1067 
1069 
1070  /* end of stream, output what is still in the buffers */
1071  if (buf_size == 0) {
1072  out:
1073 
1074  h->cur_pic_ptr = NULL;
1075  h->first_field = 0;
1076 
1077  // FIXME factorize this with the output code below
1078  out = h->delayed_pic[0];
1079  out_idx = 0;
1080  for (i = 1;
1081  h->delayed_pic[i] &&
1082  !h->delayed_pic[i]->f->key_frame &&
1083  !h->delayed_pic[i]->mmco_reset;
1084  i++)
1085  if (h->delayed_pic[i]->poc < out->poc) {
1086  out = h->delayed_pic[i];
1087  out_idx = i;
1088  }
1089 
1090  for (i = out_idx; h->delayed_pic[i]; i++)
1091  h->delayed_pic[i] = h->delayed_pic[i + 1];
1092 
1093  if (out) {
1094  out->reference &= ~DELAYED_PIC_REF;
1095  ret = output_frame(h, pict, out);
1096  if (ret < 0)
1097  return ret;
1098  *got_frame = 1;
1099  }
1100 
1101  return buf_index;
1102  }
1104  int side_size;
1105  uint8_t *side = av_packet_get_side_data(avpkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
1106  if (is_extra(side, side_size))
1107  ff_h264_decode_extradata(side, side_size,
1108  &h->ps, &h->is_avc, &h->nal_length_size,
1109  avctx->err_recognition, avctx);
1110  }
1111  if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){
1112  if (is_extra(buf, buf_size))
1113  return ff_h264_decode_extradata(buf, buf_size,
1114  &h->ps, &h->is_avc, &h->nal_length_size,
1115  avctx->err_recognition, avctx);
1116  }
1117 
1118  buf_index = decode_nal_units(h, buf, buf_size);
1119  if (buf_index < 0)
1120  return AVERROR_INVALIDDATA;
1121 
1122  if (!h->cur_pic_ptr && h->nal_unit_type == H264_NAL_END_SEQUENCE) {
1123  av_assert0(buf_index <= buf_size);
1124  goto out;
1125  }
1126 
1127  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) {
1128  if (avctx->skip_frame >= AVDISCARD_NONREF ||
1129  buf_size >= 4 && !memcmp("Q264", buf, 4))
1130  return buf_size;
1131  av_log(avctx, AV_LOG_ERROR, "no frame!\n");
1132  return AVERROR_INVALIDDATA;
1133  }
1134 
1135  if (!(avctx->flags2 & AV_CODEC_FLAG2_CHUNKS) ||
1136  (h->mb_y >= h->mb_height && h->mb_height)) {
1137  if (avctx->flags2 & AV_CODEC_FLAG2_CHUNKS)
1138  decode_postinit(h, 1);
1139 
1140  if ((ret = ff_h264_field_end(h, &h->slice_ctx[0], 0)) < 0)
1141  return ret;
1142 
1143  /* Wait for second field. */
1144  *got_frame = 0;
1145  if (h->next_output_pic && ((avctx->flags & AV_CODEC_FLAG_OUTPUT_CORRUPT) ||
1146  (avctx->flags2 & AV_CODEC_FLAG2_SHOW_ALL) ||
1147  h->next_output_pic->recovered)) {
1148  if (!h->next_output_pic->recovered)
1150 
1151  if (!h->avctx->hwaccel &&
1152  (h->next_output_pic->field_poc[0] == INT_MAX ||
1153  h->next_output_pic->field_poc[1] == INT_MAX)
1154  ) {
1155  int p;
1156  AVFrame *f = h->next_output_pic->f;
1157  int field = h->next_output_pic->field_poc[0] == INT_MAX;
1158  uint8_t *dst_data[4];
1159  int linesizes[4];
1160  const uint8_t *src_data[4];
1161 
1162  av_log(h->avctx, AV_LOG_DEBUG, "Duplicating field %d to fill missing\n", field);
1163 
1164  for (p = 0; p<4; p++) {
1165  dst_data[p] = f->data[p] + (field^1)*f->linesize[p];
1166  src_data[p] = f->data[p] + field *f->linesize[p];
1167  linesizes[p] = 2*f->linesize[p];
1168  }
1169 
1170  av_image_copy(dst_data, linesizes, src_data, linesizes,
1171  f->format, f->width, f->height>>1);
1172  }
1173 
1174  ret = output_frame(h, pict, h->next_output_pic);
1175  if (ret < 0)
1176  return ret;
1177  *got_frame = 1;
1178  if (CONFIG_MPEGVIDEO) {
1179  ff_print_debug_info2(h->avctx, pict, NULL,
1183  NULL,
1184  h->mb_width, h->mb_height, h->mb_stride, 1);
1185  }
1186  }
1187  }
1188 
1189  av_assert0(pict->buf[0] || !*got_frame);
1190 
1192 
1193  return get_consumed_bytes(buf_index, buf_size);
1194 }
1195 
1196 #define OFFSET(x) offsetof(H264Context, x)
1197 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1198 static const AVOption h264_options[] = {
1199  {"is_avc", "is avc", offsetof(H264Context, is_avc), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, 0},
1200  {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0},
1201  { "enable_er", "Enable error resilience on damaged frames (unsafe)", OFFSET(enable_er), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, VD },
1202  { NULL },
1203 };
1204 
1205 static const AVClass h264_class = {
1206  .class_name = "H264 Decoder",
1207  .item_name = av_default_item_name,
1208  .option = h264_options,
1209  .version = LIBAVUTIL_VERSION_INT,
1210 };
1211 
1213  .name = "h264",
1214  .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
1215  .type = AVMEDIA_TYPE_VIDEO,
1216  .id = AV_CODEC_ID_H264,
1217  .priv_data_size = sizeof(H264Context),
1219  .close = h264_decode_end,
1221  .capabilities = /*AV_CODEC_CAP_DRAW_HORIZ_BAND |*/ AV_CODEC_CAP_DR1 |
1224  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
1225  .flush = flush_dpb,
1226  .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
1227  .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_h264_update_thread_context),
1229  .priv_class = &h264_class,
1230 };
1231 
1232 #if CONFIG_H264_VDPAU_DECODER && FF_API_VDPAU
1233 static const AVClass h264_vdpau_class = {
1234  .class_name = "H264 VDPAU Decoder",
1235  .item_name = av_default_item_name,
1236  .option = h264_options,
1237  .version = LIBAVUTIL_VERSION_INT,
1238 };
1239 
1240 AVCodec ff_h264_vdpau_decoder = {
1241  .name = "h264_vdpau",
1242  .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
1243  .type = AVMEDIA_TYPE_VIDEO,
1244  .id = AV_CODEC_ID_H264,
1245  .priv_data_size = sizeof(H264Context),
1247  .close = h264_decode_end,
1250  .flush = flush_dpb,
1251  .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264,
1252  AV_PIX_FMT_NONE},
1254  .priv_class = &h264_vdpau_class,
1255 };
1256 #endif
int ff_h264_decode_picture_parameter_set(GetBitContext *gb, AVCodecContext *avctx, H264ParamSets *ps, int bit_length)
Decode PPS.
Definition: h264_ps.c:713
struct H264Context * h264
Definition: h264dec.h:182
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)
Split an input packet into NAL units.
Definition: h2645_parse.c:250
int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl, const H2645NAL *nal)
Decode a slice header.
Definition: h264_slice.c:1763
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1685
int(* start_frame)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Called at the beginning of each frame or field picture.
Definition: avcodec.h:3783
int workaround_bugs
Definition: h264dec.h:378
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int sei_recovery_frame_cnt
Definition: h264dec.h:163
#define AV_NUM_DATA_POINTERS
Definition: frame.h:185
#define SLICE_FLAG_ALLOW_FIELD
allow draw_horiz_band() with field slices (MPEG-2 field pics)
Definition: avcodec.h:2221
enum AVPixelFormat backup_pix_fmt
Definition: h264dec.h:371
H264POCContext poc
Definition: h264dec.h:462
int mb_num
Definition: h264dec.h:441
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2266
MPEG-2/4 4:2:0, H.264 default for 4:2:0.
Definition: pixfmt.h:481
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
#define FF_ALLOCZ_ARRAY_OR_GOTO(ctx, p, nelem, elsize, label)
Definition: internal.h:157
int recovery_frame_cnt
recovery_frame_cnt
Definition: h264_sei.h:109
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
Definition: h264dec.h:303
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static void flush(AVCodecContext *avctx)
int size
Definition: h2645_parse.h:35
int edge_emu_buffer_allocated
Definition: h264dec.h:291
uint16_t num_pictures
Definition: h264_sei.h:137
static void debug_green_metadata(const H264SEIGreenMetaData *gm, void *logctx)
Definition: h264dec.c:698
int first_field
Definition: h264dec.h:413
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int init_thread_copy(AVCodecContext *avctx)
Definition: tta.c:392
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVBufferRef * sps_list[MAX_SPS_COUNT]
Definition: h264_ps.h:137
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:367
const char * desc
Definition: nvenc.c:101
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
uint16_t * cbp_table
Definition: h264dec.h:418
int frame_packing_arrangement_cancel_flag
is previous arrangement canceled, -1 if never received
Definition: h264_sei.h:120
void ff_er_frame_end(ERContext *s)
Sequence parameter set.
Definition: h264_ps.h:43
int mb_y
Definition: h264dec.h:438
int bitstream_restriction_flag
Definition: h264_ps.h:83
int num
Numerator.
Definition: rational.h:59
int bipred_scratchpad_allocated
Definition: h264dec.h:290
int size
Definition: avcodec.h:1602
#define DELAYED_PIC_REF
Value of Picture.reference when Picture is not a reference picture, but is held for delayed output...
Definition: diracdec.c:65
AVBufferPool * mb_type_pool
Definition: h264dec.h:561
static void idr(H264Context *h)
instantaneous decoder refresh.
Definition: h264dec.c:596
int crop
Definition: h264dec.h:165
#define SLICE_SINGLETHREAD
Definition: h264dec.h:849
int16_t(*[2] motion_val)[2]
Definition: h264dec.h:136
int flags
Definition: h264dec.h:377
void ff_h264_flush_change(H264Context *h)
Definition: h264dec.c:609
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1904
int mb_height
Definition: h264dec.h:439
H264Picture * delayed_pic[MAX_DELAYED_PIC_COUNT+2]
Definition: h264dec.h:467
int is_avc
Used to parse AVC variant of H.264.
Definition: h264dec.h:452
AVBufferPool * ref_index_pool
Definition: h264dec.h:563
void ff_h264_sei_uninit(H264SEIContext *h)
Reset SEI values at the beginning of the frame.
Definition: h264_sei.c:41
ERPicture last_pic
H264Context.
Definition: h264dec.h:341
AVFrame * f
Definition: h264dec.h:129
#define AV_CODEC_FLAG2_CHUNKS
Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries...
Definition: avcodec.h:920
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:87
AVCodec.
Definition: avcodec.h:3600
int picture_structure
Definition: h264dec.h:412
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
static void flush_dpb(AVCodecContext *avctx)
Definition: h264dec.c:636
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
Definition: h264dec.h:271
int size_bits
Size, in bits, of just the data, excluding the stop bit and any trailing padding. ...
Definition: h2645_parse.h:42
H264SEIGreenMetaData green_metadata
Definition: h264_sei.h:155
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1813
int ff_h264_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
Definition: h264_slice.c:301
uint8_t * chroma_pred_mode_table
Definition: h264dec.h:421
int setup_finished
Definition: h264dec.h:550
void ff_h264_remove_all_refs(H264Context *h)
Definition: h264_refs.c:563
av_cold int ff_h264_decode_init(AVCodecContext *avctx)
Definition: h264dec.c:394
enum AVDiscard skip_frame
Skip decoding for selected frames.
Definition: avcodec.h:3301
H264SEIContext sei
Definition: h264dec.h:558
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
Definition: h264dec.c:62
const char * ff_h264_sei_stereo_mode(const H264SEIFramePacking *h)
Get stereo_mode string from the h264 frame_packing_arrangement.
Definition: h264_sei.c:454
BYTE int const BYTE * srcp
Definition: avisynth_c.h:813
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2996
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:72
#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: avcodec.h:984
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
static int get_consumed_bytes(int pos, int buf_size)
Return the number of bytes consumed for building the current frame.
Definition: h264dec.c:974
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
const PPS * pps
Definition: h264_ps.h:143
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
uint8_t
#define av_cold
Definition: attributes.h:82
uint8_t green_metadata_type
Definition: h264_sei.h:134
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:145
AVOptions.
void ff_h264_set_erpic(ERPicture *dst, H264Picture *src)
Definition: h264_picture.c:130
void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
Definition: h264_mb.c:799
int poc
frame POC
Definition: h264dec.h:148
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
Multithreading support functions.
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:383
static int get_last_needed_nal(H264Context *h)
Definition: h264dec.c:660
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1791
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
#define SLICE_SKIPED
Definition: h264dec.h:850
uint8_t(*[2] top_borders)[(16 *3)*2]
Definition: h264dec.h:289
void ff_h2645_packet_uninit(H2645Packet *pkt)
Free all the allocated memory in the packet.
Definition: h2645_parse.c:371
static void decode_postinit(H264Context *h, int setup_finished)
Run setup operations that must be run after slice header decoding.
Definition: h264dec.c:477
ERPicture cur_pic
int frame_recovered
Initial frame has been completely recovered.
Definition: h264dec.h:540
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:422
#define PICT_BOTTOM_FIELD
Definition: mpegutils.h:38
#define height
uint8_t * data
Definition: avcodec.h:1601
#define AV_CODEC_CAP_HWACCEL_VDPAU
Codec can export data for HW decoding (VDPAU).
Definition: avcodec.h:995
static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
Definition: h264dec.c:726
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
AVDictionary * metadata
metadata.
Definition: frame.h:474
static int h264_init_context(AVCodecContext *avctx, H264Context *h)
Definition: h264dec.c:305
void ff_thread_finish_setup(AVCodecContext *avctx)
If the codec defines update_thread_context(), call this when they are ready for the next thread to st...
H264Picture * parent
Definition: h264dec.h:178
#define FRAME_RECOVERED_SEI
Sufficient number of frames have been decoded since a SEI recovery point, so all the following frames...
Definition: h264dec.h:538
H264SEIAFD afd
Definition: h264_sei.h:148
high precision timer, useful to profile code
int recovered
picture at IDR or recovery point + recovery count
Definition: h264dec.h:161
#define AVOnce
Definition: thread.h:158
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:2420
#define av_log(a,...)
int last_pocs[MAX_DELAYED_PIC_COUNT]
Definition: h264dec.h:468
uint16_t num_seconds
Definition: h264_sei.h:136
uint8_t percent_six_tap_filtering
Definition: h264_sei.h:140
H.264 common definitions.
void ff_h264_draw_horiz_band(const H264Context *h, H264SliceContext *sl, int y, int height)
Definition: h264dec.c:104
H.264 parameter set handling.
H264Picture DPB[H264_MAX_PICTURE_COUNT]
Definition: h264dec.h:349
int width
width and height of the video frame
Definition: frame.h:236
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1998
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
static const AVClass h264_class
Definition: h264dec.c:1205
int16_t * dc_val_base
Definition: h264dec.h:285
int context_initialized
Definition: h264dec.h:376
ERContext er
Definition: h264dec.h:184
int nal_unit_type
Definition: h264dec.h:447
av_default_item_name
int num_reorder_frames
Definition: h264_ps.h:84
int is_copy
Whether the parent AVCodecContext is a copy of the context which had init() called on it...
Definition: internal.h:111
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:158
int backup_height
Definition: h264dec.h:370
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
static const AVOption h264_options[]
Definition: h264dec.c:1198
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:3126
int backup_width
Backup frame properties: needed, because they can be different between returned frame and last decode...
Definition: h264dec.h:369
H2645Packet pkt
Definition: h264dec.h:357
int capabilities
Codec capabilities.
Definition: avcodec.h:3619
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define FIELD_PICTURE(h)
Definition: h264dec.h:74
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)
uint8_t(*[2] mvd_table)[2]
Definition: h264dec.h:422
static int h264_decode_end(AVCodecContext *avctx)
Definition: h264dec.c:360
int prev_interlaced_frame
Complement sei_pic_struct SEI_PIC_STRUCT_TOP_BOTTOM and SEI_PIC_STRUCT_BOTTOM_TOP indicate interlaced...
Definition: h264dec.h:514
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1771
ThreadFrame tf
Definition: h264dec.h:130
simple assert() macros that are a bit more flexible than ISO C assert().
const char * name
Name of the codec implementation.
Definition: avcodec.h:3607
H264SEIUnregistered unregistered
Definition: h264_sei.h:150
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
uint8_t * list_counts
Array of list_count per MB specifying the slice type.
Definition: h264dec.h:415
#define FFMAX(a, b)
Definition: common.h:94
static void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.h:226
#define fail()
Definition: checkasm.h:83
uint8_t active_format_description
Definition: h264_sei.h:89
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
Definition: avcodec.h:1022
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:302
int * mb_index2xy
int raw_size
Definition: h2645_parse.h:44
uint8_t percent_non_zero_macroblocks
Definition: h264_sei.h:138
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:215
int crop_left
Definition: h264dec.h:166
uint8_t * error_status_table
uint8_t * direct_table
Definition: h264dec.h:423
int nal_length_size
Number of bytes used for nal length (1, 2 or 4)
Definition: h264dec.h:453
useful rectangle filling function
uint8_t * data[3]
Definition: h264dec.h:171
int prev_poc_msb
poc_msb of the last reference pic for POC type 0
Definition: h264_parse.h:49
void ff_vdpau_h264_picture_start(H264Context *h)
uint8_t nb_components
The number of components each pixel has, (1-4)
Definition: pixdesc.h:83
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:1937
enum AVPictureType pict_type
Picture type of the frame.
Definition: frame.h:258
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:413
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2964
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:3118
uint32_t * mb2br_xy
Definition: h264dec.h:405
uint8_t * er_temp_buffer
#define FFMIN(a, b)
Definition: common.h:96
uint16_t * slice_table
slice_table_base + 2*mb_stride + 1
Definition: h264dec.h:408
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:68
int reference
Definition: h264dec.h:160
static int is_extra(const uint8_t *buf, int buf_size)
Definition: h264dec.c:1018
static const uint8_t start_code[]
Definition: h264dec.c:657
int width
picture width / height.
Definition: avcodec.h:1863
int redundant_pic_count
Definition: h264dec.h:248
int nb_slice_ctx
Definition: h264dec.h:355
uint32_t * mb_type
Definition: h264dec.h:139
#define AV_FRAME_FLAG_CORRUPT
The frame data may be corrupted, e.g.
Definition: frame.h:401
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
Definition: avcodec.h:3119
Context Adaptive Binary Arithmetic Coder inline functions.
H.264 / AVC / MPEG-4 part10 codec.
int mmco_reset
Definition: h264dec.h:477
H264SliceContext * slice_ctx
Definition: h264dec.h:354
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:2975
int reference
Definition: h264dec.h:174
int ticks_per_frame
For some codecs, the time base is closer to the field rate than the frame rate.
Definition: avcodec.h:1822
int top_borders_allocated[2]
Definition: h264dec.h:292
static void fill_rectangle(int x, int y, int w, int h)
Definition: ffplay.c:788
int ref_idc
H.264 only, nal_ref_idc.
Definition: h2645_parse.h:65
#define src
Definition: vp9dsp.c:530
int type
NAL unit type.
Definition: h2645_parse.h:52
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:3107
uint8_t * edge_emu_buffer
Definition: h264dec.h:288
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:85
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
Definition: avcodec.h:1026
static const int8_t mv[256][2]
Definition: 4xm.c:77
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:248
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: avcodec.h:1372
int mb_stride
Definition: h264dec.h:440
AVCodecContext * avctx
Definition: h264dec.h:343
#define AV_ONCE_INIT
Definition: thread.h:159
Libavcodec external API header.
#define MAX_DELAYED_PIC_COUNT
Definition: h264dec.h:56
enum AVCodecID codec_id
Definition: avcodec.h:1693
AVCodec ff_h264_decoder
Definition: h264dec.c:1212
ERPicture next_pic
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
int next_outputed_poc
Definition: h264dec.h:470
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
Definition: get_bits.h:437
#define AV_CODEC_FLAG2_FAST
Allow non spec compliant speedup tricks.
Definition: avcodec.h:901
int field_poc[2]
top/bottom POC
Definition: h264dec.h:147
int debug
debug
Definition: avcodec.h:2916
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
int max_contexts
Max number of threads / contexts.
Definition: h264dec.h:498
int recovery_frame
recovery_frame is the frame_num at which the next frame should be fully constructed.
Definition: h264dec.h:527
main external API structure.
Definition: avcodec.h:1676
uint8_t * data
The data buffer.
Definition: buffer.h:89
const uint8_t * data
Definition: h2645_parse.h:36
static AVOnce h264_vlc_init
Definition: h264dec.c:392
void * buf
Definition: avisynth_c.h:690
void ff_print_debug_info2(AVCodecContext *avctx, AVFrame *pict, uint8_t *mbskip_table, uint32_t *mbtype_table, int8_t *qscale_table, int16_t(*motion_val[2])[2], int *low_delay, int mb_width, int mb_height, int mb_stride, int quarter_sample)
Print debugging info for the given picture.
Definition: mpegvideo.c:1579
int8_t * qscale_table
Definition: h264dec.h:133
static const uint8_t scan8[16 *3+3]
Definition: h264dec.h:656
int extradata_size
Definition: avcodec.h:1792
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:70
H.264 HW decoding with VDPAU, data[0] contains a vdpau_render_state struct which contains the bitstre...
Definition: pixfmt.h:104
int slice_flags
slice flags
Definition: avcodec.h:2219
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
Definition: h264dec.c:984
Describe the class of an AVClass context structure.
Definition: log.h:67
int prev_frame_num
frame_num of the last pic for POC type 1/2
Definition: h264_parse.h:53
uint8_t non_zero_count_cache[15 *8]
non zero coeff count cache.
Definition: h264dec.h:298
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:274
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
Definition: h264dec.h:672
int8_t * ref_index[2]
Definition: h264dec.h:145
av_cold void ff_h264_decode_init_vlc(void)
Definition: h264_cavlc.c:327
int pixel_shift
0 for 8-bit H.264, 1 for high-bit-depth H.264
Definition: h264dec.h:359
int mmco_reset
MMCO_RESET set this 1.
Definition: h264dec.h:150
H264Picture * cur_pic_ptr
Definition: h264dec.h:350
#define FMO
Definition: h264dec.h:62
int mb_mbaff
mb_aff_frame && mb_field_decoding_flag
Definition: h264dec.h:246
#define FF_DEBUG_GREEN_MD
Definition: avcodec.h:2943
int enable_er
Definition: h264dec.h:556
uint8_t percent_intra_coded_macroblocks
Definition: h264_sei.h:139
#define FF_COMPLIANCE_STRICT
Strictly conform to all the things in the spec no matter what consequences.
Definition: avcodec.h:2896
const SPS * sps
Definition: h264_ps.h:144
unsigned int sps_id
Definition: h264_ps.h:108
attribute_deprecated int dtg_active_format
DTG active format information (additional aspect ratio information only used in DVB MPEG-2 transport ...
Definition: avcodec.h:2182
int allocate_progress
Whether to allocate progress for frame threading.
Definition: internal.h:126
H264SEIRecoveryPoint recovery_point
Definition: h264_sei.h:151
AVCodecContext * avctx
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
int linesize[3]
Definition: h264dec.h:172
unsigned int list_count
Definition: h264dec.h:272
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
int prev_poc_lsb
poc_lsb of the last reference pic for POC type 0
Definition: h264_parse.h:50
uint8_t xsd_metric_type
Definition: h264_sei.h:142
int ff_h264_alloc_tables(H264Context *h)
Allocate tables.
Definition: h264dec.c:182
int has_recovery_point
Definition: h264dec.h:542
uint16_t xsd_metric_value
Definition: h264_sei.h:143
discard all non reference
Definition: avcodec.h:783
int ff_h264_field_end(H264Context *h, H264SliceContext *sl, int in_setup)
Definition: h264_picture.c:153
AVBufferPool * qscale_table_pool
Definition: h264dec.h:560
H264Picture * next_output_pic
Definition: h264dec.h:469
AVBufferPool * motion_val_pool
Definition: h264dec.h:562
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:80
common internal api header.
if(ret< 0)
Definition: vf_mcdeint.c:282
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
#define FF_ALLOC_OR_GOTO(ctx, p, size, label)
Definition: internal.h:130
uint16_t * slice_table_base
Definition: h264dec.h:460
int missing_fields
Definition: h264dec.h:544
#define OFFSET(x)
Definition: h264dec.c:1196
H264ParamSets ps
Definition: h264dec.h:458
int16_t * dc_val[3]
H264SEIFramePacking frame_packing
Definition: h264_sei.h:153
H.264 / AVC / MPEG-4 part10 motion vector prediction.
Bi-dir predicted.
Definition: avutil.h:270
int workaround_bugs
Work around bugs in encoders which sometimes cannot be detected automatically.
Definition: avcodec.h:2860
const AVProfile ff_h264_profiles[]
Definition: profiles.c:59
int cur_chroma_format_idc
Definition: h264dec.h:552
int8_t * intra4x4_pred_mode
Definition: h264dec.h:210
int den
Denominator.
Definition: rational.h:60
void ff_h264_ps_uninit(H264ParamSets *ps)
Uninit H264 param sets structure.
Definition: h264_ps.c:307
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
static int h264_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: h264dec.c:1040
GetBitContext gb
Definition: h2645_parse.h:47
#define VD
Definition: h264dec.c:1197
void ff_h264_free_tables(H264Context *h)
Definition: h264dec.c:139
void * priv_data
Definition: avcodec.h:1718
const uint8_t * raw_data
Definition: h2645_parse.h:45
#define PICT_FRAME
Definition: mpegutils.h:39
int ff_h264_execute_decode_slices(H264Context *h, unsigned context_count)
Call decode_slice() for each context.
Definition: h264_slice.c:2588
int8_t ref_cache[2][5 *8]
Definition: h264dec.h:304
#define AV_CODEC_FLAG_OUTPUT_CORRUPT
Output even those frames that might be corrupted.
Definition: avcodec.h:841
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:81
int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, H264ParamSets *ps, int ignore_truncation)
Decode SPS.
Definition: h264_ps.c:324
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1726
static int ff_thread_once(char *control, void(*routine)(void))
Definition: thread.h:161
H2645NAL * nals
Definition: h2645_parse.h:70
H264Picture cur_pic
Definition: h264dec.h:351
#define PART_NOT_AVAILABLE
Definition: h264dec.h:396
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:253
int mb_width
Definition: h264dec.h:439
int current_slice
current slice number, used to initialize slice_num of each thread/context
Definition: h264dec.h:490
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:1778
uint32_t * mb2b_xy
Definition: h264dec.h:404
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
Definition: h264dec.h:273
H264Picture last_pic_for_ec
Definition: h264dec.h:352
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2469
int height
Definition: frame.h:236
int crop_top
Definition: h264dec.h:167
#define AV_CODEC_FLAG2_SHOW_ALL
Show all frames before the first keyframe.
Definition: avcodec.h:929
FILE * out
Definition: movenc.c:54
uint8_t(*[2] mvd_table)[2]
Definition: h264dec.h:317
#define av_freep(p)
int ff_h264_sei_decode(H264SEIContext *h, GetBitContext *gb, const H264ParamSets *ps, void *logctx)
Definition: h264_sei.c:382
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
Definition: ffmpeg.c:2035
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:338
int prev_frame_num_offset
for POC type 2
Definition: h264_parse.h:52
void ff_vdpau_add_data_chunk(uint8_t *data, const uint8_t *buf, int buf_size)
int8_t * intra4x4_pred_mode
Definition: h264dec.h:390
int ff_h264_slice_context_init(H264Context *h, H264SliceContext *sl)
Init context Allocate buffers which are not shared amongst multiple threads.
Definition: h264dec.c:240
int(* decode_slice)(AVCodecContext *avctx, const uint8_t *buf, uint32_t buf_size)
Callback for each slice.
Definition: avcodec.h:3797
int mb_field_decoding_flag
Definition: h264dec.h:245
uint8_t(* non_zero_count)[48]
Definition: h264dec.h:393
exp golomb vlc stuff
uint8_t * bipred_scratchpad
Definition: h264dec.h:287
void ff_h264_unref_picture(H264Context *h, H264Picture *pic)
Definition: h264_picture.c:46
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
This structure stores compressed data.
Definition: avcodec.h:1578
int droppable
Definition: h264dec.h:373
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:959
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2894
int nal_ref_idc
Definition: h264dec.h:446
GetBitContext gb
Definition: h264dec.h:183
for(j=16;j >0;--j)
#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)
Definition: internal.h:139
int b_stride
Definition: h264dec.h:406
const uint16_t ff_h264_mb_sizes[4]
Definition: h264dec.c:60
Context Adaptive Binary Arithmetic Coder.
#define H264_MAX_PICTURE_COUNT
Definition: h264dec.h:52
uint8_t percent_alpha_point_deblocking_instance
Definition: h264_sei.h:141