Libav
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 Libav.
8  *
9  * Libav 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  * Libav 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 Libav; 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 #include "libavutil/pixdesc.h"
26 
27 #include "internal.h"
28 #include "thread.h"
29 #include "hevc.h"
30 
32 {
33  /* frame->frame can be NULL if context init failed */
34  if (!frame->frame || !frame->frame->buf[0])
35  return;
36 
37  frame->flags &= ~flags;
38  if (!frame->flags) {
39  ff_thread_release_buffer(s->avctx, &frame->tf);
40 
42  frame->tab_mvf = NULL;
43 
44  av_buffer_unref(&frame->rpl_buf);
46  frame->rpl_tab = NULL;
47  frame->refPicList = NULL;
48 
49  frame->collocated_ref = NULL;
50 
53  }
54 }
55 
57 {
58  int x_cb = x0 >> s->ps.sps->log2_ctb_size;
59  int y_cb = y0 >> s->ps.sps->log2_ctb_size;
60  int pic_width_cb = (s->ps.sps->width + (1 << s->ps.sps->log2_ctb_size) - 1) >>
61  s->ps.sps->log2_ctb_size;
62  int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[y_cb * pic_width_cb + x_cb];
63  return (RefPicList *)ref->rpl_tab[ctb_addr_ts];
64 }
65 
67 {
68  int i;
69  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
70  ff_hevc_unref_frame(s, &s->DPB[i],
73 }
74 
76 {
77  int i;
78  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
79  ff_hevc_unref_frame(s, &s->DPB[i], ~0);
80 }
81 
83 {
84  int i, j, ret;
85  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
86  HEVCFrame *frame = &s->DPB[i];
87  if (frame->frame->buf[0])
88  continue;
89 
90  ret = ff_thread_get_buffer(s->avctx, &frame->tf,
92  if (ret < 0)
93  return NULL;
94 
95  frame->rpl_buf = av_buffer_allocz(s->pkt.nb_nals * sizeof(RefPicListTab));
96  if (!frame->rpl_buf)
97  goto fail;
98 
100  if (!frame->tab_mvf_buf)
101  goto fail;
102  frame->tab_mvf = (MvField *)frame->tab_mvf_buf->data;
103 
105  if (!frame->rpl_tab_buf)
106  goto fail;
107  frame->rpl_tab = (RefPicListTab **)frame->rpl_tab_buf->data;
108  frame->ctb_count = s->ps.sps->ctb_width * s->ps.sps->ctb_height;
109  for (j = 0; j < frame->ctb_count; j++)
110  frame->rpl_tab[j] = (RefPicListTab *)frame->rpl_buf->data;
111 
112  if (s->avctx->hwaccel) {
113  const AVHWAccel *hwaccel = s->avctx->hwaccel;
115  if (hwaccel->frame_priv_data_size) {
117  if (!frame->hwaccel_priv_buf)
118  goto fail;
120  }
121  }
122 
123  return frame;
124 
125 fail:
126  ff_hevc_unref_frame(s, frame, ~0);
127  return NULL;
128  }
129  av_log(s->avctx, AV_LOG_ERROR, "Error allocating frame, DPB full.\n");
130  return NULL;
131 }
132 
133 int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc)
134 {
135  HEVCFrame *ref;
136  int i;
137 
138  /* check that this POC doesn't already exist */
139  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
140  HEVCFrame *frame = &s->DPB[i];
141 
142  if (frame->frame->buf[0] && frame->sequence == s->seq_decode &&
143  frame->poc == poc) {
144  av_log(s->avctx, AV_LOG_ERROR, "Duplicate POC in a sequence: %d.\n",
145  poc);
146  return AVERROR_INVALIDDATA;
147  }
148  }
149 
150  ref = alloc_frame(s);
151  if (!ref)
152  return AVERROR(ENOMEM);
153 
154  *frame = ref->frame;
155  s->ref = ref;
156 
157  if (s->sh.pic_output_flag)
159  else
161 
162  ref->poc = poc;
163  ref->sequence = s->seq_decode;
164  ref->window = s->ps.sps->output_window;
165 
166  return 0;
167 }
168 
170 {
171  do {
172  int nb_output = 0;
173  int min_poc = INT_MAX;
174  int i, min_idx, ret;
175 
176  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
177  HEVCFrame *frame = &s->DPB[i];
178  if ((frame->flags & HEVC_FRAME_FLAG_OUTPUT) &&
179  frame->sequence == s->seq_output) {
180  nb_output++;
181  if (frame->poc < min_poc) {
182  min_poc = frame->poc;
183  min_idx = i;
184  }
185  }
186  }
187 
188  /* wait for more frames before output */
189  if (!flush && s->seq_output == s->seq_decode && s->ps.sps &&
190  nb_output <= s->ps.sps->temporal_layer[s->ps.sps->max_sub_layers - 1].num_reorder_pics)
191  return 0;
192 
193  if (nb_output) {
194  HEVCFrame *frame = &s->DPB[min_idx];
196  int pixel_shift;
197 
198  if (!desc)
199  return AVERROR_BUG;
200 
201  pixel_shift = desc->comp[0].depth > 8;
202 
203  ret = av_frame_ref(out, frame->frame);
205  if (ret < 0)
206  return ret;
207 
208  for (i = 0; i < 3; i++) {
209  int hshift = (i > 0) ? desc->log2_chroma_w : 0;
210  int vshift = (i > 0) ? desc->log2_chroma_h : 0;
211  int off = ((frame->window.left_offset >> hshift) << pixel_shift) +
212  (frame->window.top_offset >> vshift) * out->linesize[i];
213  out->data[i] += off;
214  }
216  "Output frame with POC %d.\n", frame->poc);
217  return 1;
218  }
219 
220  if (s->seq_output != s->seq_decode)
221  s->seq_output = (s->seq_output + 1) & 0xff;
222  else
223  break;
224  } while (1);
225 
226  return 0;
227 }
228 
230 {
231  HEVCFrame *frame = s->ref;
232  int ctb_count = frame->ctb_count;
233  int ctb_addr_ts = s->ps.pps->ctb_addr_rs_to_ts[s->sh.slice_segment_addr];
234  int i;
235 
236  if (s->slice_idx >= frame->rpl_buf->size / sizeof(RefPicListTab))
237  return AVERROR_INVALIDDATA;
238 
239  for (i = ctb_addr_ts; i < ctb_count; i++)
240  frame->rpl_tab[i] = (RefPicListTab *)frame->rpl_buf->data + s->slice_idx;
241 
242  frame->refPicList = (RefPicList *)frame->rpl_tab[ctb_addr_ts];
243 
244  return 0;
245 }
246 
248 {
249  SliceHeader *sh = &s->sh;
250 
251  uint8_t nb_list = sh->slice_type == B_SLICE ? 2 : 1;
252  uint8_t list_idx;
253  int i, j, ret;
254 
255  ret = init_slice_rpl(s);
256  if (ret < 0)
257  return ret;
258 
259  if (!(s->rps[ST_CURR_BEF].nb_refs + s->rps[ST_CURR_AFT].nb_refs +
260  s->rps[LT_CURR].nb_refs)) {
261  av_log(s->avctx, AV_LOG_ERROR, "Zero refs in the frame RPS.\n");
262  return AVERROR_INVALIDDATA;
263  }
264 
265  for (list_idx = 0; list_idx < nb_list; list_idx++) {
266  RefPicList rpl_tmp = { { 0 } };
267  RefPicList *rpl = &s->ref->refPicList[list_idx];
268 
269  /* The order of the elements is
270  * ST_CURR_BEF - ST_CURR_AFT - LT_CURR for the L0 and
271  * ST_CURR_AFT - ST_CURR_BEF - LT_CURR for the L1 */
272  int cand_lists[3] = { list_idx ? ST_CURR_AFT : ST_CURR_BEF,
273  list_idx ? ST_CURR_BEF : ST_CURR_AFT,
274  LT_CURR };
275 
276  /* concatenate the candidate lists for the current frame */
277  while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) {
278  for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) {
279  RefPicList *rps = &s->rps[cand_lists[i]];
280  for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < MAX_REFS; j++) {
281  rpl_tmp.list[rpl_tmp.nb_refs] = rps->list[j];
282  rpl_tmp.ref[rpl_tmp.nb_refs] = rps->ref[j];
283  rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = i == 2;
284  rpl_tmp.nb_refs++;
285  }
286  }
287  }
288 
289  /* reorder the references if necessary */
290  if (sh->rpl_modification_flag[list_idx]) {
291  for (i = 0; i < sh->nb_refs[list_idx]; i++) {
292  int idx = sh->list_entry_lx[list_idx][i];
293 
294  if (idx >= rpl_tmp.nb_refs) {
295  av_log(s->avctx, AV_LOG_ERROR, "Invalid reference index.\n");
296  return AVERROR_INVALIDDATA;
297  }
298 
299  rpl->list[i] = rpl_tmp.list[idx];
300  rpl->ref[i] = rpl_tmp.ref[idx];
301  rpl->isLongTerm[i] = rpl_tmp.isLongTerm[idx];
302  rpl->nb_refs++;
303  }
304  } else {
305  memcpy(rpl, &rpl_tmp, sizeof(*rpl));
306  rpl->nb_refs = FFMIN(rpl->nb_refs, sh->nb_refs[list_idx]);
307  }
308 
309  if (sh->collocated_list == list_idx &&
310  sh->collocated_ref_idx < rpl->nb_refs)
311  s->ref->collocated_ref = rpl->ref[sh->collocated_ref_idx];
312  }
313 
314  return 0;
315 }
316 
317 static HEVCFrame *find_ref_idx(HEVCContext *s, int poc)
318 {
319  int i;
320  int LtMask = (1 << s->ps.sps->log2_max_poc_lsb) - 1;
321 
322  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
323  HEVCFrame *ref = &s->DPB[i];
324  if (ref->frame->buf[0] && (ref->sequence == s->seq_decode)) {
325  if ((ref->poc & LtMask) == poc)
326  return ref;
327  }
328  }
329 
330  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
331  HEVCFrame *ref = &s->DPB[i];
332  if (ref->frame->buf[0] && ref->sequence == s->seq_decode) {
333  if (ref->poc == poc || (ref->poc & LtMask) == poc)
334  return ref;
335  }
336  }
337 
339  "Could not find ref with POC %d\n", poc);
340  return NULL;
341 }
342 
343 static void mark_ref(HEVCFrame *frame, int flag)
344 {
346  frame->flags |= flag;
347 }
348 
350 {
351  HEVCFrame *frame;
352  int i, x, y;
353 
354  frame = alloc_frame(s);
355  if (!frame)
356  return NULL;
357 
358  if (!s->avctx->hwaccel) {
359  if (!s->ps.sps->pixel_shift) {
360  for (i = 0; frame->frame->buf[i]; i++)
361  memset(frame->frame->buf[i]->data, 1 << (s->ps.sps->bit_depth - 1),
362  frame->frame->buf[i]->size);
363  } else {
364  for (i = 0; frame->frame->data[i]; i++)
365  for (y = 0; y < (s->ps.sps->height >> s->ps.sps->vshift[i]); y++)
366  for (x = 0; x < (s->ps.sps->width >> s->ps.sps->hshift[i]); x++) {
367  AV_WN16(frame->frame->data[i] + y * frame->frame->linesize[i] + 2 * x,
368  1 << (s->ps.sps->bit_depth - 1));
369  }
370  }
371  }
372 
373  frame->poc = poc;
374  frame->sequence = s->seq_decode;
375  frame->flags = 0;
376 
377  ff_thread_report_progress(&frame->tf, INT_MAX, 0);
378 
379  return frame;
380 }
381 
382 /* add a reference with the given poc to the list and mark it as used in DPB */
384  int poc, int ref_flag)
385 {
386  HEVCFrame *ref = find_ref_idx(s, poc);
387 
388  if (ref == s->ref)
389  return AVERROR_INVALIDDATA;
390 
391  if (!ref) {
392  ref = generate_missing_ref(s, poc);
393  if (!ref)
394  return AVERROR(ENOMEM);
395  }
396 
397  list->list[list->nb_refs] = ref->poc;
398  list->ref[list->nb_refs] = ref;
399  list->nb_refs++;
400 
401  mark_ref(ref, ref_flag);
402  return 0;
403 }
404 
406 {
407  const ShortTermRPS *short_rps = s->sh.short_term_rps;
408  const LongTermRPS *long_rps = &s->sh.long_term_rps;
409  RefPicList *rps = s->rps;
410  int i, ret = 0;
411 
412  if (!short_rps) {
413  rps[0].nb_refs = rps[1].nb_refs = 0;
414  return 0;
415  }
416 
417  /* clear the reference flags on all frames except the current one */
418  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
419  HEVCFrame *frame = &s->DPB[i];
420 
421  if (frame == s->ref)
422  continue;
423 
424  mark_ref(frame, 0);
425  }
426 
427  for (i = 0; i < NB_RPS_TYPE; i++)
428  rps[i].nb_refs = 0;
429 
430  /* add the short refs */
431  for (i = 0; i < short_rps->num_delta_pocs; i++) {
432  int poc = s->poc + short_rps->delta_poc[i];
433  int list;
434 
435  if (!short_rps->used[i])
436  list = ST_FOLL;
437  else if (i < short_rps->num_negative_pics)
438  list = ST_CURR_BEF;
439  else
440  list = ST_CURR_AFT;
441 
442  ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_SHORT_REF);
443  if (ret < 0)
444  goto fail;
445  }
446 
447  /* add the long refs */
448  for (i = 0; i < long_rps->nb_refs; i++) {
449  int poc = long_rps->poc[i];
450  int list = long_rps->used[i] ? LT_CURR : LT_FOLL;
451 
452  ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_LONG_REF);
453  if (ret < 0)
454  goto fail;
455  }
456 
457 fail:
458  /* release any frames that are now unused */
459  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
460  ff_hevc_unref_frame(s, &s->DPB[i], 0);
461 
462  return ret;
463 }
464 
465 int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb)
466 {
467  int max_poc_lsb = 1 << s->ps.sps->log2_max_poc_lsb;
468  int prev_poc_lsb = s->pocTid0 % max_poc_lsb;
469  int prev_poc_msb = s->pocTid0 - prev_poc_lsb;
470  int poc_msb;
471 
472  if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2)
473  poc_msb = prev_poc_msb + max_poc_lsb;
474  else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2)
475  poc_msb = prev_poc_msb - max_poc_lsb;
476  else
477  poc_msb = prev_poc_msb;
478 
479  // For BLA picture types, POCmsb is set to 0.
480  if (s->nal_unit_type == NAL_BLA_W_LP ||
483  poc_msb = 0;
484 
485  return poc_msb + poc_lsb;
486 }
487 
489 {
490  int ret = 0;
491  int i;
492  const ShortTermRPS *rps = s->sh.short_term_rps;
493  LongTermRPS *long_rps = &s->sh.long_term_rps;
494 
495  if (rps) {
496  for (i = 0; i < rps->num_negative_pics; i++)
497  ret += !!rps->used[i];
498  for (; i < rps->num_delta_pocs; i++)
499  ret += !!rps->used[i];
500  }
501 
502  if (long_rps) {
503  for (i = 0; i < long_rps->nb_refs; i++)
504  ret += !!long_rps->used[i];
505  }
506  return ret;
507 }
const HEVCPPS * pps
Definition: hevc.h:538
AVFrame * frame
Definition: hevc.h:678
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
Definition: hevc.h:127
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:106
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1768
This structure describes decoded (raw) audio or video data.
Definition: frame.h:140
HEVCFrame * ref
Definition: hevc.h:788
Definition: hevc.h:635
int ctb_height
Definition: hevc.h:451
int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc)
Definition: hevc_refs.c:133
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:308
const char * desc
Definition: nvenc.c:101
void * hwaccel_picture_private
Definition: hevc.h:694
#define MAX_REFS
Definition: hevc.h:43
uint8_t nb_refs
Definition: hevc.h:274
MvField * tab_mvf
Definition: hevc.h:680
int vshift[3]
Definition: hevc.h:461
void ff_hevc_flush_dpb(HEVCContext *s)
Drop all frames currently in DPB.
Definition: hevc_refs.c:75
int flag
Definition: cpu.c:35
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
int ff_hevc_frame_rps(HEVCContext *s)
Construct the reference picture sets for the current frame.
Definition: hevc_refs.c:405
unsigned int left_offset
Definition: hevc.h:289
int isLongTerm[MAX_REFS]
Definition: hevc.h:280
#define FF_ARRAY_ELEMS(a)
HEVCParamSets ps
Definition: hevc.h:775
static HEVCFrame * find_ref_idx(HEVCContext *s, int poc)
Definition: hevc_refs.c:317
struct HEVCFrame * ref[MAX_REFS]
Definition: hevc.h:278
int list[MAX_REFS]
Definition: hevc.h:279
int width
Definition: hevc.h:448
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:91
uint16_t seq_decode
Sequence counters for decoded and output frames, so that old frames are output first after a POC rese...
Definition: hevc.h:830
int pixel_shift
Definition: hevc.h:397
HEVCWindow output_window
Definition: hevc.h:392
static HEVCFrame * alloc_frame(HEVCContext *s)
Definition: hevc_refs.c:82
AVBufferPool * rpl_tab_pool
candidate references for the current frame
Definition: hevc.h:778
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2696
int nb_refs
Definition: hevc.h:281
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
unsigned int slice_segment_addr
address (in raster order) of the first block in the current slice
Definition: hevc.h:545
void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags)
Definition: hevc_refs.c:31
unsigned int num_negative_pics
Definition: hevc.h:264
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:119
uint8_t
LongTermRPS long_term_rps
Definition: hevc.h:564
int poc[32]
Definition: hevc.h:272
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:199
AVCodecContext * avctx
Definition: hevc.h:761
int ff_hevc_slice_rpl(HEVCContext *s)
Construct the reference picture list(s) for the current slice.
Definition: hevc_refs.c:247
ThreadFrame tf
Definition: hevc.h:679
static int flags
Definition: log.c:50
uint8_t pic_output_flag
Definition: hevc.h:555
uint8_t used[32]
Definition: hevc.h:273
int ctb_count
Definition: hevc.h:683
#define HEVC_FRAME_FLAG_LONG_REF
Definition: hevc.h:675
int slice_idx
number of the slice being currently decoded
Definition: hevc.h:792
static void mark_ref(HEVCFrame *frame, int flag)
Definition: hevc_refs.c:343
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:124
Definition: hevc.h:126
unsigned int log2_max_poc_lsb
Definition: hevc.h:400
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:100
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
Wrapper around release_buffer() frame-for multithreaded codecs.
AVBufferRef * rpl_tab_buf
Definition: hevc.h:690
#define AVERROR(e)
Definition: error.h:43
uint8_t rpl_modification_flag[2]
Definition: hevc.h:567
RefPicList * refPicList
Definition: hevc.h:681
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:145
unsigned int log2_ctb_size
Definition: hevc.h:441
simple assert() macros that are a bit more flexible than ISO C assert().
const ShortTermRPS * short_term_rps
Definition: hevc.h:562
#define fail()
Definition: checkasm.h:80
uint16_t sequence
A sequence counter, so that old frames are output first after a POC reset.
Definition: hevc.h:700
uint8_t used[32]
Definition: hevc.h:268
int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb)
Compute POC of the current frame and return it.
Definition: hevc_refs.c:465
const HEVCSPS * sps
Definition: hevc.h:537
AVBufferRef * tab_mvf_buf
Definition: hevc.h:689
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:169
#define HEVC_FRAME_FLAG_SHORT_REF
Definition: hevc.h:674
#define FFMIN(a, b)
Definition: common.h:66
unsigned int top_offset
Definition: hevc.h:291
int hshift[3]
Definition: hevc.h:460
void ff_thread_report_progress(ThreadFrame *f, int n, int field)
Notify later decoding threads when part of their reference picture is ready.
int ctb_width
Definition: hevc.h:450
struct HEVCFrame * collocated_ref
Definition: hevc.h:685
int32_t delta_poc[32]
Definition: hevc.h:267
int height
Definition: hevc.h:449
uint16_t seq_output
Definition: hevc.h:831
static int add_candidate_ref(HEVCContext *s, RefPicList *list, int poc, int ref_flag)
Definition: hevc_refs.c:383
static int init_slice_rpl(HEVCContext *s)
Definition: hevc_refs.c:229
HEVCFrame DPB[32]
Definition: hevc.h:789
static HEVCFrame * generate_missing_ref(HEVCContext *s, int poc)
Definition: hevc_refs.c:349
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:191
RefPicListTab ** rpl_tab
Definition: hevc.h:682
NULL
Definition: eval.c:55
#define HEVC_FRAME_FLAG_OUTPUT
Definition: hevc.h:673
void ff_hevc_clear_refs(HEVCContext *s)
Mark all frames in DPB as unused for reference.
Definition: hevc_refs.c:66
int * ctb_addr_rs_to_ts
CtbAddrRSToTS.
Definition: hevc.h:523
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:158
int max_sub_layers
Definition: hevc.h:403
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:80
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
AVBufferRef * hwaccel_priv_buf
Definition: hevc.h:693
uint8_t * data
The data buffer.
Definition: buffer.h:89
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:82
#define AVERROR_BUG
Bug detected, please report the issue.
Definition: error.h:60
int poc
Definition: hevc.h:684
int poc
Definition: hevc.h:790
enum NALUnitType nal_unit_type
Definition: hevc.h:786
HEVCWindow window
Definition: hevc.h:687
int pocTid0
Definition: hevc.h:791
uint8_t flags
A combination of HEVC_FRAME_FLAG_*.
Definition: hevc.h:705
int size
Size of data in bytes.
Definition: buffer.h:93
RefPicList * ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *ref, int x0, int y0)
Definition: hevc_refs.c:56
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:146
common internal api header.
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
Definition: alsdec.c:1797
unsigned int nb_refs[2]
Definition: hevc.h:571
uint8_t collocated_list
Definition: hevc.h:579
AVBufferPool * tab_mvf_pool
Definition: hevc.h:777
int num_delta_pocs
Definition: hevc.h:265
RefPicList rps[5]
Definition: hevc.h:781
unsigned int collocated_ref_idx
Definition: hevc.h:581
int frame_priv_data_size
Size of per-frame hardware accelerator private data.
Definition: avcodec.h:3334
Definition: hevc.h:125
unsigned int list_entry_lx[2][32]
Definition: hevc.h:565
int ff_hevc_frame_nb_refs(HEVCContext *s)
Get the number of candidate references for the current frame.
Definition: hevc_refs.c:488
Definition: hevc.h:132
H2645Packet pkt
Definition: hevc.h:833
FILE * out
Definition: movenc.c:54
int num_reorder_pics
Definition: hevc.h:406
#define AV_WN16(p, v)
Definition: intreadwrite.h:345
struct HEVCSPS::@21 temporal_layer[MAX_SUB_LAYERS]
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:310
AVBufferRef * rpl_buf
Definition: hevc.h:691
int bit_depth
Definition: hevc.h:396
enum SliceType slice_type
Definition: hevc.h:549
int depth
Number of bits in the component.
Definition: pixdesc.h:57
SliceHeader sh
Definition: hevc.h:783
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1183
for(j=16;j >0;--j)