FFmpeg  2.1.1
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/pixdesc.h"
25 
26 #include "hevc.h"
27 #include "internal.h"
28 #include "thread.h"
29 
31 {
32  /* frame->frame can be NULL if context init failed */
33  if (!frame->frame || !frame->frame->buf[0])
34  return;
35 
36  frame->flags &= ~flags;
37  if (!frame->flags) {
38  ff_thread_release_buffer(s->avctx, &frame->tf);
39 
41  frame->tab_mvf = NULL;
42 
43  av_buffer_unref(&frame->rpl_buf);
45  frame->rpl_tab = NULL;
46  frame->refPicList = NULL;
47 
48  frame->collocated_ref = NULL;
49  }
50 }
51 
53 {
54  if (x0 < 0 || y0 < 0) {
55  return s->ref->refPicList;
56  } else {
57  int x_cb = x0 >> s->sps->log2_ctb_size;
58  int y_cb = y0 >> s->sps->log2_ctb_size;
59  int pic_width_cb = (s->sps->width + (1<<s->sps->log2_ctb_size)-1 ) >> s->sps->log2_ctb_size;
60  int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[y_cb * pic_width_cb + x_cb];
61  return (RefPicList*) ref->rpl_tab[ctb_addr_ts];
62  }
63 }
64 
66 {
67  int i;
68  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
69  ff_hevc_unref_frame(s, &s->DPB[i],
71 }
72 
74 {
75  int i;
76  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
77  ff_hevc_unref_frame(s, &s->DPB[i], ~0);
78 }
79 
81 {
82  int i, j, ret;
83  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
84  HEVCFrame *frame = &s->DPB[i];
85  if (frame->frame->buf[0])
86  continue;
87 
89  if (ret < 0)
90  return NULL;
91 
92  frame->rpl_buf = av_buffer_allocz(s->nb_nals * sizeof(RefPicListTab));
93  if (!frame->rpl_buf)
94  goto fail;
95 
97  if (!frame->tab_mvf_buf)
98  goto fail;
99  frame->tab_mvf = (MvField*)frame->tab_mvf_buf->data;
100 
102  if (!frame->rpl_tab_buf)
103  goto fail;
104  frame->rpl_tab = (RefPicListTab**)frame->rpl_tab_buf->data;
105  frame->ctb_count = s->sps->ctb_width * s->sps->ctb_height;
106  for (j = 0; j < frame->ctb_count; j++)
107  frame->rpl_tab[j] = (RefPicListTab*)frame->rpl_buf->data;
108 
109  return frame;
110 fail:
111  ff_hevc_unref_frame(s, frame, ~0);
112  return NULL;
113  }
114  av_log(s->avctx, AV_LOG_ERROR, "Error allocating frame, DPB full.\n");
115  return NULL;
116 }
117 
119 {
120  HEVCFrame *ref;
121  int i;
122 
123  /* check that this POC doesn't already exist */
124  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
125  HEVCFrame *frame = &s->DPB[i];
126 
127  if (frame->frame->buf[0] && frame->sequence == s->seq_decode &&
128  frame->poc == poc) {
129  av_log(s->avctx, AV_LOG_ERROR, "Duplicate POC in a sequence: %d.\n",
130  poc);
131  return AVERROR_INVALIDDATA;
132  }
133  }
134 
135  ref = alloc_frame(s);
136  if (!ref)
137  return AVERROR(ENOMEM);
138 
139  *frame = ref->frame;
140  s->ref = ref;
141  ref->poc = poc;
142 
144  ref->sequence = s->seq_decode;
145  ref->window = s->sps->output_window;
146 
147  return 0;
148 }
149 
151 {
152  do {
153  int nb_output = 0;
154  int min_poc = INT_MAX;
155  int i, j, min_idx, ret;
156 
157  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
158  HEVCFrame *frame = &s->DPB[i];
159  if ((frame->flags & HEVC_FRAME_FLAG_OUTPUT) &&
160  frame->sequence == s->seq_output) {
161  nb_output++;
162  if (frame->poc < min_poc) {
163  min_poc = frame->poc;
164  min_idx = i;
165  }
166  }
167  }
168 
169  /* wait for more frames before output */
170  if (!flush && s->seq_output == s->seq_decode && s->sps &&
171  nb_output <= s->sps->temporal_layer[s->sps->max_sub_layers - 1].num_reorder_pics)
172  return 0;
173 
174  if (nb_output) {
175  HEVCFrame *frame = &s->DPB[min_idx];
176  AVFrame *dst = out;
177  AVFrame *src = frame->frame;
178  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(src->format);
179  int pixel_shift = !!(desc->comp[0].depth_minus1 > 7);
180 
181  ret = av_frame_ref(out, src);
183  if (ret < 0)
184  return ret;
185 
186  for (j = 0; j < 3; j++) {
187  int hshift = (j > 0) ? desc->log2_chroma_w : 0;
188  int vshift = (j > 0) ? desc->log2_chroma_h : 0;
189  int off = ((frame->window.left_offset >> hshift) << pixel_shift) +
190  (frame->window.top_offset >> vshift) * dst->linesize[j];
191  dst->data[j] += off;
192  }
193  av_log(s->avctx, AV_LOG_DEBUG, "Output frame with POC %d.\n", frame->poc);
194  return 1;
195  }
196 
197  if (s->seq_output != s->seq_decode)
198  s->seq_output = (s->seq_output + 1) & 0xff;
199  else
200  break;
201  } while (1);
202 
203  return 0;
204 }
205 
207 {
208  HEVCFrame *frame = s->ref;
209  int ctb_count = frame->ctb_count;
210  int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[s->sh.slice_segment_addr];
211  int i;
212 
213  if (s->slice_idx >= frame->rpl_buf->size / sizeof(RefPicListTab))
214  return AVERROR_INVALIDDATA;
215 
216  for (i = ctb_addr_ts; i < ctb_count; i++)
217  frame->rpl_tab[i] = (RefPicListTab*)frame->rpl_buf->data + s->slice_idx;
218 
219  frame->refPicList = (RefPicList*)frame->rpl_tab[ctb_addr_ts];
220 
221  return 0;
222 }
223 
225 {
226  SliceHeader *sh = &s->sh;
227 
228  uint8_t nb_list = sh->slice_type == B_SLICE ? 2 : 1;
229  uint8_t list_idx;
230  int i, j, ret;
231 
232  ret = init_slice_rpl(s);
233  if (ret < 0)
234  return ret;
235 
236  if (!(s->rps[ST_CURR_BEF].nb_refs + s->rps[ST_CURR_AFT].nb_refs +
237  s->rps[LT_CURR].nb_refs)) {
238  av_log(s->avctx, AV_LOG_ERROR, "Zero refs in the frame RPS.\n");
239  return AVERROR_INVALIDDATA;
240  }
241 
242  for (list_idx = 0; list_idx < nb_list; list_idx++) {
243  RefPicList rpl_tmp = { { 0 } };
244  RefPicList *rpl = &s->ref->refPicList[list_idx];
245 
246  /* The order of the elements is
247  * ST_CURR_BEF - ST_CURR_AFT - LT_CURR for the L0 and
248  * ST_CURR_AFT - ST_CURR_BEF - LT_CURR for the L1
249  */
250  int cand_lists[3] = { list_idx ? ST_CURR_AFT : ST_CURR_BEF,
251  list_idx ? ST_CURR_BEF : ST_CURR_AFT,
252  LT_CURR };
253 
254  /* concatenate the candidate lists for the current frame */
255  while (rpl_tmp.nb_refs < sh->nb_refs[list_idx]) {
256  for (i = 0; i < FF_ARRAY_ELEMS(cand_lists); i++) {
257  RefPicList *rps = &s->rps[cand_lists[i]];
258  for (j = 0; j < rps->nb_refs && rpl_tmp.nb_refs < MAX_REFS; j++) {
259  rpl_tmp.list[rpl_tmp.nb_refs] = rps->list[j];
260  rpl_tmp.ref[rpl_tmp.nb_refs] = rps->ref[j];
261  rpl_tmp.isLongTerm[rpl_tmp.nb_refs] = (i == 2);
262  rpl_tmp.nb_refs++;
263  }
264  }
265  }
266 
267  /* reorder the references if necessary */
268  if (sh->rpl_modification_flag[list_idx]) {
269  for (i = 0; i < sh->nb_refs[list_idx]; i++) {
270  int idx = sh->list_entry_lx[list_idx][i];
271 
272  if (idx >= rpl_tmp.nb_refs) {
273  av_log(s->avctx, AV_LOG_ERROR, "Invalid reference index.\n");
274  return AVERROR_INVALIDDATA;
275  }
276 
277  rpl->list[i] = rpl_tmp.list[idx];
278  rpl->ref[i] = rpl_tmp.ref[idx];
279  rpl->isLongTerm[i] = rpl_tmp.isLongTerm[idx];
280  rpl->nb_refs++;
281  }
282  } else {
283  memcpy(rpl, &rpl_tmp, sizeof(*rpl));
284  rpl->nb_refs = FFMIN(rpl->nb_refs, sh->nb_refs[list_idx]);
285  }
286 
287  if (sh->collocated_list == list_idx &&
288  sh->collocated_ref_idx < rpl->nb_refs)
289  s->ref->collocated_ref = rpl->ref[sh->collocated_ref_idx];
290  }
291 
292  return 0;
293 }
294 
296 {
297  int i;
298  int LtMask = (1 << s->sps->log2_max_poc_lsb) - 1;
299 
300  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
301  HEVCFrame *ref = &s->DPB[i];
302  if (ref->frame->buf[0] && (ref->sequence == s->seq_decode)) {
303  if ((ref->poc & LtMask) == poc)
304  return ref;
305  }
306  }
307 
308  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
309  HEVCFrame *ref = &s->DPB[i];
310  if (ref->frame->buf[0] && (ref->sequence == s->seq_decode)) {
311  if (ref->poc == poc || (ref->poc & LtMask) == poc)
312  return ref;
313  }
314  }
315 
317  "Could not find ref with POC %d\n", poc);
318  return NULL;
319 }
320 
321 static void mark_ref(HEVCFrame *frame, int flag)
322 {
324  frame->flags |= flag;
325 }
326 
328 {
329  HEVCFrame *frame;
330  int i, x, y;
331 
332 
333  frame = alloc_frame(s);
334  if (!frame)
335  return NULL;
336 
337  if (!s->sps->pixel_shift) {
338  for (i = 0; frame->frame->buf[i]; i++)
339  memset(frame->frame->buf[i]->data, 1 << (s->sps->bit_depth - 1),
340  frame->frame->buf[i]->size);
341  } else {
342  for (i = 0; frame->frame->data[i]; i++)
343  for (y = 0; y < (s->sps->height >> s->sps->vshift[i]); y++)
344  for (x = 0; x < (s->sps->width >> s->sps->hshift[i]); x++) {
345  AV_WN16(frame->frame->data[i] + y * frame->frame->linesize[i] + 2 * x,
346  1 << (s->sps->bit_depth - 1));
347  }
348  }
349 
350  frame->poc = poc;
351  frame->sequence = s->seq_decode;
352  frame->flags = 0;
353 
354  if (s->threads_type == FF_THREAD_FRAME)
355  ff_thread_report_progress(&frame->tf, INT_MAX, 0);
356 
357  return frame;
358 }
359 
360 /* add a reference with the given poc to the list and mark it as used in DPB */
362  int poc, int ref_flag)
363 {
364  HEVCFrame *ref = find_ref_idx(s, poc);
365 
366  if (ref == s->ref)
367  return AVERROR_INVALIDDATA;
368 
369  if (!ref) {
370  ref = generate_missing_ref(s, poc);
371  if (!ref)
372  return AVERROR(ENOMEM);
373  }
374 
375  list->list[list->nb_refs] = ref->poc;
376  list->ref[list->nb_refs] = ref;
377  list->nb_refs++;
378 
379  mark_ref(ref, ref_flag);
380  return 0;
381 }
382 
384 {
385  const ShortTermRPS *short_rps = s->sh.short_term_rps;
386  const LongTermRPS *long_rps = &s->sh.long_term_rps;
387  RefPicList *rps = s->rps;
388  int i, ret;
389 
390  if (!short_rps) {
391  rps[0].nb_refs = rps[1].nb_refs = 0;
392  return 0;
393  }
394 
395  /* clear the reference flags on all frames except the current one */
396  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++) {
397  HEVCFrame *frame = &s->DPB[i];
398 
399  if (frame == s->ref)
400  continue;
401 
402  mark_ref(frame, 0);
403  }
404 
405  for (i = 0; i < NB_RPS_TYPE; i++)
406  rps[i].nb_refs = 0;
407 
408  /* add the short refs */
409  for (i = 0; i < short_rps->num_delta_pocs; i++) {
410  int poc = s->poc + short_rps->delta_poc[i];
411  int list;
412 
413  if (!short_rps->used[i])
414  list = ST_FOLL;
415  else if (i < short_rps->num_negative_pics)
416  list = ST_CURR_BEF;
417  else
418  list = ST_CURR_AFT;
419 
420  ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_SHORT_REF);
421  if (ret < 0)
422  return ret;
423  }
424 
425  /* add the long refs */
426  for (i = 0; i < long_rps->nb_refs; i++) {
427  int poc = long_rps->poc[i];
428  int list = long_rps->used[i] ? LT_CURR : LT_FOLL;
429 
430  ret = add_candidate_ref(s, &rps[list], poc, HEVC_FRAME_FLAG_LONG_REF);
431  if (ret < 0)
432  return ret;
433  }
434 
435  /* release any frames that are now unused */
436  for (i = 0; i < FF_ARRAY_ELEMS(s->DPB); i++)
437  ff_hevc_unref_frame(s, &s->DPB[i], 0);
438 
439  return 0;
440 }
441 
443 {
444  int max_poc_lsb = 1 << s->sps->log2_max_poc_lsb;
445  int prev_poc_lsb = s->pocTid0 % max_poc_lsb;
446  int prev_poc_msb = s->pocTid0 - prev_poc_lsb;
447  int poc_msb;
448 
449  if ((poc_lsb < prev_poc_lsb) && ((prev_poc_lsb - poc_lsb) >= max_poc_lsb / 2))
450  poc_msb = prev_poc_msb + max_poc_lsb;
451  else if ((poc_lsb > prev_poc_lsb) && ((poc_lsb - prev_poc_lsb) > (max_poc_lsb / 2)))
452  poc_msb = prev_poc_msb - max_poc_lsb;
453  else
454  poc_msb = prev_poc_msb;
455 
456  // For BLA picture types, POCmsb is set to 0.
457  if (s->nal_unit_type == NAL_BLA_W_LP ||
460  poc_msb = 0;
461 
462  return poc_msb + poc_lsb;
463 }
464 
466 {
467  int ret = 0;
468  int i;
469  const ShortTermRPS *rps = s->sh.short_term_rps;
470  LongTermRPS *long_rps = &s->sh.long_term_rps;
471 
472  if (rps) {
473  for (i = 0; i < rps->num_negative_pics; i++)
474  ret += !!rps->used[i];
475  for (; i < rps->num_delta_pocs; i++)
476  ret += !!rps->used[i];
477  }
478 
479  if (long_rps) {
480  for (i = 0; i < long_rps->nb_refs; i++)
481  ret += !!long_rps->used[i];
482  }
483  return ret;
484 }
AVFrame * frame
Definition: hevc.h:688
const char * s
Definition: avisynth_c.h:668
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:105
This structure describes decoded (raw) audio or video data.
Definition: frame.h:96
HEVCFrame * ref
Definition: hevc.h:798
Definition: hevc.h:623
int ctb_height
Definition: hevc.h:441
RefPicList * ff_hevc_get_ref_list(HEVCContext *s, HEVCFrame *frame, int x0, int y0)
Definition: hevc_refs.c:52
uint8_t nb_refs
Definition: hevc.h:268
MvField * tab_mvf
Definition: hevc.h:690
#define MAX_REFS
Definition: hevc.h:40
int vshift[3]
Definition: hevc.h:451
int nb_nals
Definition: hevc.h:858
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:88
int isLongTerm[MAX_REFS]
Definition: hevc.h:274
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
static HEVCFrame * find_ref_idx(HEVCContext *s, int poc)
Definition: hevc_refs.c:295
struct HEVCFrame * ref[MAX_REFS]
Definition: hevc.h:272
int list[MAX_REFS]
Definition: hevc.h:273
int width
Definition: hevc.h:438
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:68
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:842
uint8_t threads_type
Definition: hevc.h:765
int ff_hevc_frame_nb_refs(HEVCContext *s)
Get the number of candidate references for the current frame.
Definition: hevc_refs.c:465
int pixel_shift
Definition: hevc.h:387
HEVCWindow output_window
Definition: hevc.h:382
static HEVCFrame * alloc_frame(HEVCContext *s)
Definition: hevc_refs.c:80
AVBufferPool * rpl_tab_pool
candidate references for the current frame
Definition: hevc.h:788
int nb_refs
Definition: hevc.h:275
unsigned int slice_segment_addr
address (in raster order) of the first block in the current slice
Definition: hevc.h:528
uint8_t
LongTermRPS long_term_rps
Definition: hevc.h:544
int poc[32]
Definition: hevc.h:266
int ff_hevc_compute_poc(HEVCContext *s, int poc_lsb)
Compute POC of the current frame and return it.
Definition: hevc_refs.c:442
Multithreading support functions.
Definition: hevc.h:122
AVCodecContext * avctx
Definition: hevc.h:758
int av_frame_ref(AVFrame *dst, AVFrame *src)
Setup a new reference to the data described by a given frame.
Definition: frame.c:247
struct HEVCSPS::@63 temporal_layer[MAX_SUB_LAYERS]
void ff_hevc_flush_dpb(HEVCContext *s)
Drop all frames currently in DPB.
Definition: hevc_refs.c:73
ThreadFrame tf
Definition: hevc.h:689
void ff_hevc_clear_refs(HEVCContext *s)
Mark all frames in DPB as unused for reference.
Definition: hevc_refs.c:65
#define HEVC_FRAME_FLAG_SHORT_REF
Definition: hevc.h:684
uint8_t used[32]
Definition: hevc.h:267
int ctb_count
Definition: hevc.h:693
static AVFrame * frame
Definition: demuxing.c:51
#define AV_WN16(p, v)
Definition: intreadwrite.h:364
int slice_idx
number of the slice being currently decoded
Definition: hevc.h:802
static void mark_ref(HEVCFrame *frame, int flag)
Definition: hevc_refs.c:321
const HEVCSPS * sps
Definition: hevc.h:781
void ff_hevc_unref_frame(HEVCContext *s, HEVCFrame *frame, int flags)
Definition: hevc_refs.c:30
uint16_t depth_minus1
number of bits in the component minus 1
Definition: pixdesc.h:45
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: avcodec.h:4147
unsigned int log2_max_poc_lsb
Definition: hevc.h:390
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:77
AVBufferRef * rpl_tab_buf
Definition: hevc.h:700
uint8_t rpl_modification_flag[2]
Definition: hevc.h:547
RefPicList * refPicList
Definition: hevc.h:691
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: avcodec.h:4168
int ff_hevc_slice_rpl(HEVCContext *s)
Construct the reference picture list(s) for the current slice.
Definition: hevc_refs.c:224
unsigned int log2_ctb_size
Definition: hevc.h:431
const ShortTermRPS * short_term_rps
Definition: hevc.h:543
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
Wrapper around release_buffer() frame-for multithreaded codecs.
Definition: pthread.c:1029
uint16_t sequence
A sequence counter, so that old frames are output first after a POC reset.
Definition: hevc.h:707
uint8_t used[32]
Definition: hevc.h:262
int off
Definition: dsputil_bfin.c:29
goto fail
Definition: avfilter.c:963
#define FF_ARRAY_ELEMS(a)
Definition: avcodec.h:929
AVBufferRef * tab_mvf_buf
Definition: hevc.h:699
uint8_t * data
The data buffer.
Definition: buffer.h:89
float y
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
Definition: pthread.c:1021
#define HEVC_FRAME_FLAG_LONG_REF
Definition: hevc.h:685
ret
Definition: avfilter.c:961
Definition: hevc.h:127
int hshift[3]
Definition: hevc.h:450
#define FFMIN(a, b)
Definition: avcodec.h:925
int ctb_width
Definition: hevc.h:440
struct HEVCFrame * collocated_ref
Definition: hevc.h:695
HEVCPPS * pps
Definition: hevc.h:782
int32_t delta_poc[32]
Definition: hevc.h:261
int height
Definition: hevc.h:439
uint16_t seq_output
Definition: hevc.h:843
static int add_candidate_ref(HEVCContext *s, RefPicList *list, int poc, int ref_flag)
Definition: hevc_refs.c:361
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:329
static int init_slice_rpl(HEVCContext *s)
Definition: hevc_refs.c:206
static void flush(AVCodecContext *avctx)
Definition: aacdec.c:498
int ff_hevc_output_frame(HEVCContext *s, AVFrame *frame, int flush)
Find next frame in output order and put a reference to it in frame.
Definition: hevc_refs.c:150
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1938
HEVCFrame DPB[32]
Definition: hevc.h:799
static HEVCFrame * generate_missing_ref(HEVCContext *s, int poc)
Definition: hevc_refs.c:327
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:157
RefPicListTab ** rpl_tab
Definition: hevc.h:692
AVS_Value src
Definition: avisynth_c.h:523
int * ctb_addr_rs_to_ts
CtbAddrRSToTS.
Definition: hevc.h:516
int max_sub_layers
Definition: hevc.h:393
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:57
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2607
int num_negative_pics
Definition: hevc.h:259
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:366
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:81
int poc
Definition: hevc.h:694
int poc
Definition: hevc.h:800
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:124
int top_offset
Definition: hevc.h:285
enum NALUnitType nal_unit_type
Definition: hevc.h:796
HEVCWindow window
Definition: hevc.h:697
int ff_hevc_frame_rps(HEVCContext *s)
Construct the reference picture sets for the current frame.
Definition: hevc_refs.c:383
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.c:666
int pocTid0
Definition: hevc.h:801
uint8_t flags
A combination of HEVC_FRAME_FLAG_*.
Definition: hevc.h:712
int size
Size of data in bytes.
Definition: buffer.h:93
static int flags
Definition: cpu.c:45
common internal api header.
unsigned int nb_refs[2]
Definition: hevc.h:551
Definition: hevc.h:120
uint8_t collocated_list
Definition: hevc.h:559
AVBufferPool * tab_mvf_pool
Definition: hevc.h:787
#define HEVC_FRAME_FLAG_OUTPUT
Definition: hevc.h:683
int num_delta_pocs
Definition: hevc.h:260
RefPicList rps[5]
Definition: hevc.h:791
unsigned int collocated_ref_idx
Definition: hevc.h:561
#define AVERROR_INVALIDDATA
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));returnNULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt)>2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);returnNULL;}returnac;}in_planar=av_sample_fmt_is_planar(in_fmt);out_planar=av_sample_fmt_is_planar(out_fmt);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);ff_audio_convert_init_arm(ac);ff_audio_convert_init_x86(ac);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_dlog(ac->avr,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> out
int ff_hevc_set_new_ref(HEVCContext *s, AVFrame **frame, int poc)
Definition: hevc_refs.c:118
unsigned int list_entry_lx[2][32]
Definition: hevc.h:545
#define AVERROR(e)
int num_reorder_pics
Definition: hevc.h:396
AVBufferRef * rpl_buf
Definition: hevc.h:701
int bit_depth
Definition: hevc.h:386
enum SliceType slice_type
Definition: hevc.h:532
int left_offset
Definition: hevc.h:283
SliceHeader sh
Definition: hevc.h:793
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:910
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:107
for(j=16;j >0;--j)
Definition: hevc.h:121