FFmpeg
hevc_refs.c
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1 /*
2  * HEVC video decoder
3  *
4  * Copyright (C) 2012 - 2013 Guillaume Martres
5  * Copyright (C) 2012 - 2013 Gildas Cocherel
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include "libavutil/avassert.h"
25 
26 #include "decode.h"
27 #include "thread.h"
28 #include "hevc.h"
29 #include "hevcdec.h"
30 #include "threadframe.h"
31 
33 {
34  /* frame->frame can be NULL if context init failed */
35  if (!frame->frame || !frame->frame->buf[0])
36  return;
37 
38  frame->flags &= ~flags;
39  if (!frame->flags) {
40  ff_thread_release_ext_buffer(s->avctx, &frame->tf);
41  ff_thread_release_buffer(s->avctx, frame->frame_grain);
42  frame->needs_fg = 0;
43 
44  av_buffer_unref(&frame->tab_mvf_buf);
45  frame->tab_mvf = NULL;
46 
47  av_buffer_unref(&frame->rpl_buf);
48  av_buffer_unref(&frame->rpl_tab_buf);
49  frame->rpl_tab = NULL;
50  frame->refPicList = NULL;
51 
52  frame->collocated_ref = NULL;
53 
54  av_buffer_unref(&frame->hwaccel_priv_buf);
55  frame->hwaccel_picture_private = NULL;
56  }
57 }
58 
60  const HEVCFrame *ref, int x0, int y0)
61 {
62  int x_cb = x0 >> s->ps.sps->log2_ctb_size;
63  int y_cb = y0 >> s->ps.sps->log2_ctb_size;
64  int pic_width_cb = s->ps.sps->ctb_width;
65  int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[y_cb * pic_width_cb + x_cb];
66  return &ref->rpl_tab[ctb_addr_ts]->refPicList[0];
67 }
68 
70 {
71  int i;
72  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
73  ff_hevc_unref_frame(s, &s->DPB[i],
76 }
77 
79 {
80  int i;
81  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
82  ff_hevc_unref_frame(s, &s->DPB[i], ~0);
83 }
84 
86 {
87  int i, j, ret;
88  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
89  HEVCFrame *frame = &s->DPB[i];
90  if (frame->frame->buf[0])
91  continue;
92 
93  ret = ff_thread_get_ext_buffer(s->avctx, &frame->tf,
95  if (ret < 0)
96  return NULL;
97 
98  frame->rpl_buf = av_buffer_allocz(s->pkt.nb_nals * sizeof(RefPicListTab));
99  if (!frame->rpl_buf)
100  goto fail;
101 
102  frame->tab_mvf_buf = av_buffer_pool_get(s->tab_mvf_pool);
103  if (!frame->tab_mvf_buf)
104  goto fail;
105  frame->tab_mvf = (MvField *)frame->tab_mvf_buf->data;
106 
107  frame->rpl_tab_buf = av_buffer_pool_get(s->rpl_tab_pool);
108  if (!frame->rpl_tab_buf)
109  goto fail;
110  frame->rpl_tab = (RefPicListTab **)frame->rpl_tab_buf->data;
111  frame->ctb_count = s->ps.sps->ctb_width * s->ps.sps->ctb_height;
112  for (j = 0; j < frame->ctb_count; j++)
113  frame->rpl_tab[j] = (RefPicListTab *)frame->rpl_buf->data;
114 
115  if (s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD)
116  frame->frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
117  if ((s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD) ||
118  (s->sei.picture_timing.picture_struct == AV_PICTURE_STRUCTURE_BOTTOM_FIELD))
119  frame->frame->flags |= AV_FRAME_FLAG_INTERLACED;
120 
121  if (s->avctx->hwaccel) {
122  const AVHWAccel *hwaccel = s->avctx->hwaccel;
123  av_assert0(!frame->hwaccel_picture_private);
124  if (hwaccel->frame_priv_data_size) {
125  frame->hwaccel_priv_buf = ff_hwaccel_frame_priv_alloc(s->avctx, hwaccel);
126  if (!frame->hwaccel_priv_buf)
127  goto fail;
128  frame->hwaccel_picture_private = frame->hwaccel_priv_buf->data;
129  }
130  }
131 
132  return frame;
133 fail:
135  return NULL;
136  }
137  av_log(s->avctx, AV_LOG_ERROR, "Error allocating frame, DPB full.\n");
138  return NULL;
139 }
140 
142 {
143  HEVCFrame *ref;
144  int i;
145 
146  /* check that this POC doesn't already exist */
147  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
148  HEVCFrame *frame = &s->DPB[i];
149 
150  if (frame->frame->buf[0] && frame->sequence == s->seq_decode &&
151  frame->poc == poc) {
152  av_log(s->avctx, AV_LOG_ERROR, "Duplicate POC in a sequence: %d.\n",
153  poc);
154  return AVERROR_INVALIDDATA;
155  }
156  }
157 
158  ref = alloc_frame(s);
159  if (!ref)
160  return AVERROR(ENOMEM);
161 
162  *frame = ref->frame;
163  s->ref = ref;
164 
165  if (s->sh.pic_output_flag)
167  else
169 
170  ref->poc = poc;
171  ref->sequence = s->seq_decode;
172  ref->frame->crop_left = s->ps.sps->output_window.left_offset;
173  ref->frame->crop_right = s->ps.sps->output_window.right_offset;
174  ref->frame->crop_top = s->ps.sps->output_window.top_offset;
175  ref->frame->crop_bottom = s->ps.sps->output_window.bottom_offset;
176 
177  return 0;
178 }
179 
181 {
182  for (int i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
183  HEVCFrame *frame = &s->DPB[i];
184  if (frame->sequence == HEVC_SEQUENCE_COUNTER_INVALID) {
186  }
187  }
188 }
189 
191 {
192  if (IS_IRAP(s) && s->no_rasl_output_flag == 1) {
194  for (int i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
195  HEVCFrame *frame = &s->DPB[i];
196  if ((frame->flags & mask) == HEVC_FRAME_FLAG_OUTPUT &&
197  frame->sequence != s->seq_decode) {
198  if (s->sh.no_output_of_prior_pics_flag == 1)
200  else
201  frame->flags |= HEVC_FRAME_FLAG_BUMPING;
202  }
203  }
204  }
205  do {
206  int nb_output = 0;
207  int min_poc = INT_MAX;
208  int i, min_idx, ret;
209 
210  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
211  HEVCFrame *frame = &s->DPB[i];
212  if ((frame->flags & HEVC_FRAME_FLAG_OUTPUT) &&
213  frame->sequence == s->seq_output) {
214  nb_output++;
215  if (frame->poc < min_poc || nb_output == 1) {
216  min_poc = frame->poc;
217  min_idx = i;
218  }
219  }
220  }
221 
222  /* wait for more frames before output */
223  if (!flush && s->seq_output == s->seq_decode && s->ps.sps &&
224  nb_output <= s->ps.sps->temporal_layer[s->ps.sps->max_sub_layers - 1].num_reorder_pics)
225  return 0;
226 
227  if (nb_output) {
228  HEVCFrame *frame = &s->DPB[min_idx];
229 
230  ret = av_frame_ref(out, frame->needs_fg ? frame->frame_grain : frame->frame);
231  if (frame->flags & HEVC_FRAME_FLAG_BUMPING)
233  else
235  if (ret < 0)
236  return ret;
237 
238  if (frame->needs_fg && (ret = av_frame_copy_props(out, frame->frame)) < 0)
239  return ret;
240 
241  if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN))
243 
244  av_log(s->avctx, AV_LOG_DEBUG,
245  "Output frame with POC %d.\n", frame->poc);
246  return 1;
247  }
248 
249  if (s->seq_output != s->seq_decode)
250  s->seq_output = (s->seq_output + 1) & HEVC_SEQUENCE_COUNTER_MASK;
251  else
252  break;
253  } while (1);
254 
255  return 0;
256 }
257 
259 {
260  int dpb = 0;
261  int min_poc = INT_MAX;
262  int i;
263 
264  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
265  HEVCFrame *frame = &s->DPB[i];
266  if ((frame->flags) &&
267  frame->sequence == s->seq_output &&
268  frame->poc != s->poc) {
269  dpb++;
270  }
271  }
272 
273  if (s->ps.sps && dpb >= s->ps.sps->temporal_layer[s->ps.sps->max_sub_layers - 1].max_dec_pic_buffering) {
274  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
275  HEVCFrame *frame = &s->DPB[i];
276  if ((frame->flags) &&
277  frame->sequence == s->seq_output &&
278  frame->poc != s->poc) {
279  if (frame->flags == HEVC_FRAME_FLAG_OUTPUT && frame->poc < min_poc) {
280  min_poc = frame->poc;
281  }
282  }
283  }
284 
285  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
286  HEVCFrame *frame = &s->DPB[i];
287  if (frame->flags & HEVC_FRAME_FLAG_OUTPUT &&
288  frame->sequence == s->seq_output &&
289  frame->poc <= min_poc) {
290  frame->flags |= HEVC_FRAME_FLAG_BUMPING;
291  }
292  }
293 
294  dpb--;
295  }
296 }
297 
299 {
300  HEVCFrame *frame = s->ref;
301  int ctb_count = frame->ctb_count;
302  int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[s->sh.slice_segment_addr];
303  int i;
304 
305  if (s->slice_idx >= frame->rpl_buf->size / sizeof(RefPicListTab))
306  return AVERROR_INVALIDDATA;
307 
308  for (i = ctb_addr_ts; i < ctb_count; i++)
309  frame->rpl_tab[i] = (RefPicListTab *)frame->rpl_buf->data + s->slice_idx;
310 
311  frame->refPicList = (RefPicList *)frame->rpl_tab[ctb_addr_ts];
312 
313  return 0;
314 }
315 
317 {
318  SliceHeader *sh = &s->sh;
319 
320  uint8_t nb_list = sh->slice_type == HEVC_SLICE_B ? 2 : 1;
321  uint8_t list_idx;
322  int i, j, ret;
323 
324  ret = init_slice_rpl(s);
325  if (ret < 0)
326  return ret;
327 
328  if (!(s->rps[ST_CURR_BEF].nb_refs + s->rps[ST_CURR_AFT].nb_refs +
329  s->rps[LT_CURR].nb_refs) && !s->ps.pps->pps_curr_pic_ref_enabled_flag) {
330  av_log(s->avctx, AV_LOG_ERROR, "Zero refs in the frame RPS.\n");
331  return AVERROR_INVALIDDATA;
332  }
333 
334  for (list_idx = 0; list_idx < nb_list; list_idx++) {
335  RefPicList rpl_tmp = { { 0 } };
336  RefPicList *rpl = &s->ref->refPicList[list_idx];
337 
338  /* The order of the elements is
339  * ST_CURR_BEF - ST_CURR_AFT - LT_CURR for the L0 and
340  * ST_CURR_AFT - ST_CURR_BEF - LT_CURR for the L1 */
341  int cand_lists[3] = { list_idx ? ST_CURR_AFT : ST_CURR_BEF,
342  list_idx ? ST_CURR_BEF : ST_CURR_AFT,
343  LT_CURR };
344 
345  /* concatenate the candidate lists for the current frame */
346  while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) {
347  for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) {
348  RefPicList *rps = &s->rps[cand_lists[i]];
349  for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < HEVC_MAX_REFS; j++) {
350  rpl_tmp.list[rpl_tmp.nb_refs] = rps->list[j];
351  rpl_tmp.ref[rpl_tmp.nb_refs] = rps->ref[j];
352  rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = i == 2;
353  rpl_tmp.nb_refs++;
354  }
355  }
356  // Construct RefPicList0, RefPicList1 (8-8, 8-10)
357  if (s->ps.pps->pps_curr_pic_ref_enabled_flag) {
358  rpl_tmp.list[rpl_tmp.nb_refs] = s->ref->poc;
359  rpl_tmp.ref[rpl_tmp.nb_refs] = s->ref;
360  rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = 1;
361  rpl_tmp.nb_refs++;
362  }
363  }
364 
365  /* reorder the references if necessary */
366  if (sh->rpl_modification_flag[list_idx]) {
367  for (i = 0; i < sh->nb_refs[list_idx]; i++) {
368  int idx = sh->list_entry_lx[list_idx][i];
369 
370  if (idx >= rpl_tmp.nb_refs) {
371  av_log(s->avctx, AV_LOG_ERROR, "Invalid reference index.\n");
372  return AVERROR_INVALIDDATA;
373  }
374 
375  rpl->list[i] = rpl_tmp.list[idx];
376  rpl->ref[i] = rpl_tmp.ref[idx];
377  rpl->isLongTerm[i] = rpl_tmp.isLongTerm[idx];
378  rpl->nb_refs++;
379  }
380  } else {
381  memcpy(rpl, &rpl_tmp, sizeof(*rpl));
382  rpl->nb_refs = FFMIN(rpl->nb_refs, sh->nb_refs[list_idx]);
383  }
384 
385  // 8-9
386  if (s->ps.pps->pps_curr_pic_ref_enabled_flag &&
387  !sh->rpl_modification_flag[list_idx] &&
388  rpl_tmp.nb_refs > sh->nb_refs[L0]) {
389  rpl->list[sh->nb_refs[L0] - 1] = s->ref->poc;
390  rpl->ref[sh->nb_refs[L0] - 1] = s->ref;
391  }
392 
393  if (sh->collocated_list == list_idx &&
394  sh->collocated_ref_idx < rpl->nb_refs)
395  s->ref->collocated_ref = rpl->ref[sh->collocated_ref_idx];
396  }
397 
398  return 0;
399 }
400 
401 static HEVCFrame *find_ref_idx(HEVCContext *s, int poc, uint8_t use_msb)
402 {
403  int mask = use_msb ? ~0 : (1 << s->ps.sps->log2_max_poc_lsb) - 1;
404  int i;
405 
406  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
407  HEVCFrame *ref = &s->DPB[i];
408  if (ref->frame->buf[0] && ref->sequence == s->seq_decode) {
409  if ((ref->poc & mask) == poc && (use_msb || ref->poc != s->poc))
410  return ref;
411  }
412  }
413 
414  if (s->nal_unit_type != HEVC_NAL_CRA_NUT && !IS_BLA(s))
415  av_log(s->avctx, AV_LOG_ERROR,
416  "Could not find ref with POC %d\n", poc);
417  return NULL;
418 }
419 
420 static void mark_ref(HEVCFrame *frame, int flag)
421 {
423  frame->flags |= flag;
424 }
425 
427 {
428  HEVCFrame *frame;
429  int i, y;
430 
431  frame = alloc_frame(s);
432  if (!frame)
433  return NULL;
434 
435  if (!s->avctx->hwaccel) {
436  if (!s->ps.sps->pixel_shift) {
437  for (i = 0; frame->frame->data[i]; i++)
438  memset(frame->frame->data[i], 1 << (s->ps.sps->bit_depth - 1),
439  frame->frame->linesize[i] * AV_CEIL_RSHIFT(s->ps.sps->height, s->ps.sps->vshift[i]));
440  } else {
441  for (i = 0; frame->frame->data[i]; i++)
442  for (y = 0; y < (s->ps.sps->height >> s->ps.sps->vshift[i]); y++) {
443  uint8_t *dst = frame->frame->data[i] + y * frame->frame->linesize[i];
444  AV_WN16(dst, 1 << (s->ps.sps->bit_depth - 1));
445  av_memcpy_backptr(dst + 2, 2, 2*(s->ps.sps->width >> s->ps.sps->hshift[i]) - 2);
446  }
447  }
448  }
449 
450  frame->poc = poc;
452  frame->flags = 0;
453 
454  if (s->threads_type == FF_THREAD_FRAME)
455  ff_thread_report_progress(&frame->tf, INT_MAX, 0);
456 
457  return frame;
458 }
459 
460 /* add a reference with the given poc to the list and mark it as used in DPB */
462  int poc, int ref_flag, uint8_t use_msb)
463 {
464  HEVCFrame *ref = find_ref_idx(s, poc, use_msb);
465 
466  if (ref == s->ref || list->nb_refs >= HEVC_MAX_REFS)
467  return AVERROR_INVALIDDATA;
468 
469  if (!ref) {
470  ref = generate_missing_ref(s, poc);
471  if (!ref)
472  return AVERROR(ENOMEM);
473  }
474 
475  list->list[list->nb_refs] = ref->poc;
476  list->ref[list->nb_refs] = ref;
477  list->nb_refs++;
478 
479  mark_ref(ref, ref_flag);
480  return 0;
481 }
482 
484 {
485  const ShortTermRPS *short_rps = s->sh.short_term_rps;
486  const LongTermRPS *long_rps = &s->sh.long_term_rps;
487  RefPicList *rps = s->rps;
488  int i, ret = 0;
489 
490  if (!short_rps) {
491  rps[0].nb_refs = rps[1].nb_refs = 0;
492  return 0;
493  }
494 
496 
497  /* clear the reference flags on all frames except the current one */
498  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
499  HEVCFrame *frame = &s->DPB[i];
500 
501  if (frame == s->ref)
502  continue;
503 
504  mark_ref(frame, 0);
505  }
506 
507  for (i = 0; i < NB_RPS_TYPE; i++)
508  rps[i].nb_refs = 0;
509 
510  /* add the short refs */
511  for (i = 0; i < short_rps->num_delta_pocs; i++) {
512  int poc = s->poc + short_rps->delta_poc[i];
513  int list;
514 
515  if (!short_rps->used[i])
516  list = ST_FOLL;
517  else if (i < short_rps->num_negative_pics)
518  list = ST_CURR_BEF;
519  else
520  list = ST_CURR_AFT;
521 
523  if (ret < 0)
524  goto fail;
525  }
526 
527  /* add the long refs */
528  for (i = 0; i < long_rps->nb_refs; i++) {
529  int poc = long_rps->poc[i];
530  int list = long_rps->used[i] ? LT_CURR : LT_FOLL;
531 
533  if (ret < 0)
534  goto fail;
535  }
536 
537 fail:
538  /* release any frames that are now unused */
539  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
540  ff_hevc_unref_frame(s, &s->DPB[i], 0);
541 
542  return ret;
543 }
544 
546 {
547  int ret = 0;
548  int i;
549  const ShortTermRPS *rps = s->sh.short_term_rps;
550  const LongTermRPS *long_rps = &s->sh.long_term_rps;
551 
552  if (rps) {
553  for (i = 0; i < rps->num_negative_pics; i++)
554  ret += !!rps->used[i];
555  for (; i < rps->num_delta_pocs; i++)
556  ret += !!rps->used[i];
557  }
558 
559  if (long_rps) {
560  for (i = 0; i < long_rps->nb_refs; i++)
561  ret += !!long_rps->used[i];
562  }
563 
564  if (s->ps.pps->pps_curr_pic_ref_enabled_flag)
565  ret++;
566 
567  return ret;
568 }
ShortTermRPS::used
uint8_t used[32]
Definition: hevc_ps.h:84
LT_FOLL
@ LT_FOLL
Definition: hevcdec.h:85
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
ff_hevc_get_ref_list
const RefPicList * ff_hevc_get_ref_list(const HEVCContext *s, const HEVCFrame *ref, int x0, int y0)
Definition: hevc_refs.c:59
ff_thread_release_ext_buffer
void ff_thread_release_ext_buffer(AVCodecContext *avctx, ThreadFrame *f)
Unref a ThreadFrame.
Definition: pthread_frame.c:1045
out
FILE * out
Definition: movenc.c:54
find_ref_idx
static HEVCFrame * find_ref_idx(HEVCContext *s, int poc, uint8_t use_msb)
Definition: hevc_refs.c:401
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
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:330
RefPicList
Definition: hevcdec.h:241
thread.h
add_candidate_ref
static int add_candidate_ref(HEVCContext *s, RefPicList *list, int poc, int ref_flag, uint8_t use_msb)
Definition: hevc_refs.c:461
AV_FRAME_FLAG_TOP_FIELD_FIRST
#define AV_FRAME_FLAG_TOP_FIELD_FIRST
A flag to mark frames where the top field is displayed first if the content is interlaced.
Definition: frame.h:631
AVHWAccel
Definition: avcodec.h:2111
HEVC_FRAME_FLAG_LONG_REF
#define HEVC_FRAME_FLAG_LONG_REF
Definition: hevcdec.h:401
ff_hevc_clear_refs
void ff_hevc_clear_refs(HEVCContext *s)
Mark all frames in DPB as unused for reference.
Definition: hevc_refs.c:69
fail
#define fail()
Definition: checkasm.h:137
mark_ref
static void mark_ref(HEVCFrame *frame, int flag)
Definition: hevc_refs.c:420
ff_hevc_output_frame
int ff_hevc_output_frame(HEVCContext *s, AVFrame *out, int flush)
Find next frame in output order and put a reference to it in frame.
Definition: hevc_refs.c:190
RefPicList::nb_refs
int nb_refs
Definition: hevcdec.h:245
ff_hwaccel_frame_priv_alloc
AVBufferRef * ff_hwaccel_frame_priv_alloc(AVCodecContext *avctx, const AVHWAccel *hwaccel)
Allocate a hwaccel frame private data and create an AVBufferRef from it.
Definition: decode.c:1722
ShortTermRPS::num_delta_pocs
int num_delta_pocs
Definition: hevc_ps.h:79
avassert.h
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
HEVC_SEQUENCE_COUNTER_INVALID
#define HEVC_SEQUENCE_COUNTER_INVALID
Definition: hevcdec.h:405
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:609
HEVC_FRAME_FLAG_BUMPING
#define HEVC_FRAME_FLAG_BUMPING
Definition: hevcdec.h:402
mask
static const uint16_t mask[17]
Definition: lzw.c:38
av_memcpy_backptr
void av_memcpy_backptr(uint8_t *dst, int back, int cnt)
Overlapping memcpy() implementation.
Definition: mem.c:445
av_buffer_pool_get
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:384
s
#define s(width, name)
Definition: cbs_vp9.c:256
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:50
AV_GET_BUFFER_FLAG_REF
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:413
init_slice_rpl
static int init_slice_rpl(HEVCContext *s)
Definition: hevc_refs.c:298
ff_hevc_set_new_ref
int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc)
Definition: hevc_refs.c:141
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
decode.h
HEVC_FRAME_FLAG_SHORT_REF
#define HEVC_FRAME_FLAG_SHORT_REF
Definition: hevcdec.h:400
ff_hevc_slice_rpl
int ff_hevc_slice_rpl(HEVCContext *s)
Construct the reference picture list(s) for the current slice.
Definition: hevc_refs.c:316
RefPicList::ref
struct HEVCFrame * ref[HEVC_MAX_REFS]
Definition: hevcdec.h:242
SliceHeader::collocated_list
uint8_t collocated_list
Definition: hevcdec.h:291
generate_missing_ref
static HEVCFrame * generate_missing_ref(HEVCContext *s, int poc)
Definition: hevc_refs.c:426
AV_PICTURE_STRUCTURE_BOTTOM_FIELD
@ AV_PICTURE_STRUCTURE_BOTTOM_FIELD
coded as bottom field
Definition: avcodec.h:2888
threadframe.h
IS_BLA
#define IS_BLA(s)
Definition: hevcdec.h:76
HEVC_SLICE_B
@ HEVC_SLICE_B
Definition: hevc.h:96
NULL
#define NULL
Definition: coverity.c:32
HEVC_SEQUENCE_COUNTER_MASK
#define HEVC_SEQUENCE_COUNTER_MASK
Definition: hevcdec.h:404
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:736
av_buffer_unref
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
Definition: buffer.c:139
LongTermRPS::poc
int poc[32]
Definition: hevcdec.h:235
AV_PICTURE_STRUCTURE_TOP_FIELD
@ AV_PICTURE_STRUCTURE_TOP_FIELD
coded as top field
Definition: avcodec.h:2887
L0
#define L0
Definition: hevcdec.h:57
list
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 list
Definition: filter_design.txt:25
LongTermRPS::poc_msb_present
uint8_t poc_msb_present[32]
Definition: hevcdec.h:236
HEVC_NAL_CRA_NUT
@ HEVC_NAL_CRA_NUT
Definition: hevc.h:50
RefPicListTab
Definition: hevcdec.h:248
SliceHeader::nb_refs
unsigned int nb_refs[2]
Definition: hevcdec.h:283
ff_hevc_frame_rps
int ff_hevc_frame_rps(HEVCContext *s)
Construct the reference picture sets for the current frame.
Definition: hevc_refs.c:483
IS_IRAP
#define IS_IRAP(s)
Definition: hevcdec.h:78
LongTermRPS::used
uint8_t used[32]
Definition: hevcdec.h:237
ST_FOLL
@ ST_FOLL
Definition: hevcdec.h:83
hevcdec.h
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:361
for
for(k=2;k<=8;++k)
Definition: h264pred_template.c:425
SliceHeader::collocated_ref_idx
unsigned int collocated_ref_idx
Definition: hevcdec.h:293
HEVC_FRAME_FLAG_OUTPUT
#define HEVC_FRAME_FLAG_OUTPUT
Definition: hevcdec.h:399
MvField
Definition: hevcdec.h:353
ff_hevc_unref_frame
void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags)
Definition: hevc_refs.c:32
alloc_frame
static HEVCFrame * alloc_frame(HEVCContext *s)
Definition: hevc_refs.c:85
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:921
FF_THREAD_FRAME
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:1537
ff_thread_release_buffer
void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
Wrapper around release_buffer() frame-for multithreaded codecs.
Definition: pthread_frame.c:1034
ShortTermRPS::num_negative_pics
unsigned int num_negative_pics
Definition: hevc_ps.h:78
flag
#define flag(name)
Definition: cbs_av1.c:553
SliceHeader
Definition: hevcdec.h:252
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
HEVCFrame
Definition: hevcdec.h:407
unref_missing_refs
static void unref_missing_refs(HEVCContext *s)
Definition: hevc_refs.c:180
RefPicList::list
int list[HEVC_MAX_REFS]
Definition: hevcdec.h:243
ff_hevc_bump_frame
void ff_hevc_bump_frame(HEVCContext *s)
Definition: hevc_refs.c:258
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
SliceHeader::list_entry_lx
unsigned int list_entry_lx[2][32]
Definition: hevcdec.h:277
ff_thread_get_ext_buffer
int ff_thread_get_ext_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around ff_get_buffer() for frame-multithreaded codecs.
Definition: pthread_frame.c:1003
AV_FRAME_FLAG_INTERLACED
#define AV_FRAME_FLAG_INTERLACED
A flag to mark frames whose content is interlaced.
Definition: frame.h:626
hevc.h
av_buffer_allocz
AVBufferRef * av_buffer_allocz(size_t size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:93
ret
ret
Definition: filter_design.txt:187
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
ST_CURR_BEF
@ ST_CURR_BEF
Definition: hevcdec.h:81
ff_hevc_frame_nb_refs
int ff_hevc_frame_nb_refs(const HEVCContext *s)
Get the number of candidate references for the current frame.
Definition: hevc_refs.c:545
LongTermRPS
Definition: hevcdec.h:234
SliceHeader::slice_type
enum HEVCSliceType slice_type
Definition: hevcdec.h:260
ff_hevc_flush_dpb
void ff_hevc_flush_dpb(HEVCContext *s)
Drop all frames currently in DPB.
Definition: hevc_refs.c:78
LT_CURR
@ LT_CURR
Definition: hevcdec.h:84
NB_RPS_TYPE
@ NB_RPS_TYPE
Definition: hevcdec.h:86
HEVCContext
Definition: hevcdec.h:496
AVHWAccel::frame_priv_data_size
int frame_priv_data_size
Size of per-frame hardware accelerator private data.
Definition: avcodec.h:2220
SliceHeader::rpl_modification_flag
uint8_t rpl_modification_flag[2]
Definition: hevcdec.h:279
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:112
ShortTermRPS
Definition: hevc_ps.h:72
flush
void(* flush)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:367
ST_CURR_AFT
@ ST_CURR_AFT
Definition: hevcdec.h:82
LongTermRPS::nb_refs
uint8_t nb_refs
Definition: hevcdec.h:238
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:61
HEVC_MAX_REFS
@ HEVC_MAX_REFS
Definition: hevc.h:119
ShortTermRPS::delta_poc
int32_t delta_poc[32]
Definition: hevc_ps.h:83
RefPicList::isLongTerm
int isLongTerm[HEVC_MAX_REFS]
Definition: hevcdec.h:244
AV_CODEC_EXPORT_DATA_FILM_GRAIN
#define AV_CODEC_EXPORT_DATA_FILM_GRAIN
Decoding only.
Definition: avcodec.h:408
AV_WN16
#define AV_WN16(p, v)
Definition: intreadwrite.h:372