FFmpeg
avpacket.c
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1 /*
2  * AVPacket functions for libavcodec
3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
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 #include <string.h>
23 
24 #include "libavutil/avassert.h"
25 #include "libavutil/common.h"
26 #include "libavutil/internal.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/mem.h"
29 
30 #include "bytestream.h"
31 #include "internal.h"
32 #include "packet.h"
33 #include "packet_internal.h"
34 
35 #if FF_API_INIT_PACKET
37 {
40  pkt->pos = -1;
41  pkt->duration = 0;
42  pkt->flags = 0;
43  pkt->stream_index = 0;
44  pkt->buf = NULL;
45  pkt->side_data = NULL;
46  pkt->side_data_elems = 0;
47 }
48 #endif
49 
51 {
52  memset(pkt, 0, sizeof(*pkt));
53 
56  pkt->pos = -1;
57 }
58 
60 {
61  AVPacket *pkt = av_malloc(sizeof(AVPacket));
62  if (!pkt)
63  return pkt;
64 
66 
67  return pkt;
68 }
69 
71 {
72  if (!pkt || !*pkt)
73  return;
74 
76  av_freep(pkt);
77 }
78 
79 static int packet_alloc(AVBufferRef **buf, int size)
80 {
81  int ret;
82  if (size < 0 || size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
83  return AVERROR(EINVAL);
84 
86  if (ret < 0)
87  return ret;
88 
89  memset((*buf)->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
90 
91  return 0;
92 }
93 
95 {
96  AVBufferRef *buf = NULL;
97  int ret = packet_alloc(&buf, size);
98  if (ret < 0)
99  return ret;
100 
102  pkt->buf = buf;
103  pkt->data = buf->data;
104  pkt->size = size;
105 
106  return 0;
107 }
108 
110 {
111  if (pkt->size <= size)
112  return;
113  pkt->size = size;
114  memset(pkt->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
115 }
116 
117 int av_grow_packet(AVPacket *pkt, int grow_by)
118 {
119  int new_size;
120  av_assert0((unsigned)pkt->size <= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
121  if ((unsigned)grow_by >
122  INT_MAX - (pkt->size + AV_INPUT_BUFFER_PADDING_SIZE))
123  return AVERROR(ENOMEM);
124 
125  new_size = pkt->size + grow_by + AV_INPUT_BUFFER_PADDING_SIZE;
126  if (pkt->buf) {
127  size_t data_offset;
128  uint8_t *old_data = pkt->data;
129  if (pkt->data == NULL) {
130  data_offset = 0;
131  pkt->data = pkt->buf->data;
132  } else {
133  data_offset = pkt->data - pkt->buf->data;
134  if (data_offset > INT_MAX - new_size)
135  return AVERROR(ENOMEM);
136  }
137 
138  if (new_size + data_offset > pkt->buf->size ||
140  int ret = av_buffer_realloc(&pkt->buf, new_size + data_offset);
141  if (ret < 0) {
142  pkt->data = old_data;
143  return ret;
144  }
145  pkt->data = pkt->buf->data + data_offset;
146  }
147  } else {
148  pkt->buf = av_buffer_alloc(new_size);
149  if (!pkt->buf)
150  return AVERROR(ENOMEM);
151  if (pkt->size > 0)
152  memcpy(pkt->buf->data, pkt->data, pkt->size);
153  pkt->data = pkt->buf->data;
154  }
155  pkt->size += grow_by;
156  memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
157 
158  return 0;
159 }
160 
162 {
163  if (size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
164  return AVERROR(EINVAL);
165 
168  if (!pkt->buf)
169  return AVERROR(ENOMEM);
170 
171  pkt->data = data;
172  pkt->size = size;
173 
174  return 0;
175 }
176 
178 {
179  int i;
180  for (i = 0; i < pkt->side_data_elems; i++)
183  pkt->side_data_elems = 0;
184 }
185 
187  uint8_t *data, size_t size)
188 {
190  int i, elems = pkt->side_data_elems;
191 
192  for (i = 0; i < elems; i++) {
193  AVPacketSideData *sd = &pkt->side_data[i];
194 
195  if (sd->type == type) {
196  av_free(sd->data);
197  sd->data = data;
198  sd->size = size;
199  return 0;
200  }
201  }
202 
203  if ((unsigned)elems + 1 > AV_PKT_DATA_NB)
204  return AVERROR(ERANGE);
205 
206  tmp = av_realloc(pkt->side_data, (elems + 1) * sizeof(*tmp));
207  if (!tmp)
208  return AVERROR(ENOMEM);
209 
210  pkt->side_data = tmp;
211  pkt->side_data[elems].data = data;
212  pkt->side_data[elems].size = size;
213  pkt->side_data[elems].type = type;
214  pkt->side_data_elems++;
215 
216  return 0;
217 }
218 
219 
221  size_t size)
222 {
223  int ret;
224  uint8_t *data;
225 
226  if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
227  return NULL;
229  if (!data)
230  return NULL;
231 
233  if (ret < 0) {
234  av_freep(&data);
235  return NULL;
236  }
237 
238  return data;
239 }
240 
242  size_t *size)
243 {
244  int i;
245 
246  for (i = 0; i < pkt->side_data_elems; i++) {
247  if (pkt->side_data[i].type == type) {
248  if (size)
249  *size = pkt->side_data[i].size;
250  return pkt->side_data[i].data;
251  }
252  }
253  if (size)
254  *size = 0;
255  return NULL;
256 }
257 
259 {
260  switch(type) {
261  case AV_PKT_DATA_PALETTE: return "Palette";
262  case AV_PKT_DATA_NEW_EXTRADATA: return "New Extradata";
263  case AV_PKT_DATA_PARAM_CHANGE: return "Param Change";
264  case AV_PKT_DATA_H263_MB_INFO: return "H263 MB Info";
265  case AV_PKT_DATA_REPLAYGAIN: return "Replay Gain";
266  case AV_PKT_DATA_DISPLAYMATRIX: return "Display Matrix";
267  case AV_PKT_DATA_STEREO3D: return "Stereo 3D";
268  case AV_PKT_DATA_AUDIO_SERVICE_TYPE: return "Audio Service Type";
269  case AV_PKT_DATA_QUALITY_STATS: return "Quality stats";
270  case AV_PKT_DATA_FALLBACK_TRACK: return "Fallback track";
271  case AV_PKT_DATA_CPB_PROPERTIES: return "CPB properties";
272  case AV_PKT_DATA_SKIP_SAMPLES: return "Skip Samples";
273  case AV_PKT_DATA_JP_DUALMONO: return "JP Dual Mono";
274  case AV_PKT_DATA_STRINGS_METADATA: return "Strings Metadata";
275  case AV_PKT_DATA_SUBTITLE_POSITION: return "Subtitle Position";
276  case AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL: return "Matroska BlockAdditional";
277  case AV_PKT_DATA_WEBVTT_IDENTIFIER: return "WebVTT ID";
278  case AV_PKT_DATA_WEBVTT_SETTINGS: return "WebVTT Settings";
279  case AV_PKT_DATA_METADATA_UPDATE: return "Metadata Update";
280  case AV_PKT_DATA_MPEGTS_STREAM_ID: return "MPEGTS Stream ID";
281  case AV_PKT_DATA_MASTERING_DISPLAY_METADATA: return "Mastering display metadata";
282  case AV_PKT_DATA_CONTENT_LIGHT_LEVEL: return "Content light level metadata";
283  case AV_PKT_DATA_SPHERICAL: return "Spherical Mapping";
284  case AV_PKT_DATA_A53_CC: return "A53 Closed Captions";
285  case AV_PKT_DATA_ENCRYPTION_INIT_INFO: return "Encryption initialization data";
286  case AV_PKT_DATA_ENCRYPTION_INFO: return "Encryption info";
287  case AV_PKT_DATA_AFD: return "Active Format Description data";
288  case AV_PKT_DATA_PRFT: return "Producer Reference Time";
289  case AV_PKT_DATA_ICC_PROFILE: return "ICC Profile";
290  case AV_PKT_DATA_DOVI_CONF: return "DOVI configuration record";
291  case AV_PKT_DATA_S12M_TIMECODE: return "SMPTE ST 12-1:2014 timecode";
292  case AV_PKT_DATA_DYNAMIC_HDR10_PLUS: return "HDR10+ Dynamic Metadata (SMPTE 2094-40)";
293  }
294  return NULL;
295 }
296 
298 {
299  uint8_t *data = NULL;
300  *size = 0;
301 
302  if (!dict)
303  return NULL;
304 
305  for (int pass = 0; pass < 2; pass++) {
306  const AVDictionaryEntry *t = NULL;
307  size_t total_length = 0;
308 
309  while ((t = av_dict_get(dict, "", t, AV_DICT_IGNORE_SUFFIX))) {
310  for (int i = 0; i < 2; i++) {
311  const char *str = i ? t->value : t->key;
312  const size_t len = strlen(str) + 1;
313 
314  if (pass)
315  memcpy(data + total_length, str, len);
316  else if (len > SIZE_MAX - total_length)
317  return NULL;
318  total_length += len;
319  }
320  }
321  if (pass)
322  break;
323  data = av_malloc(total_length);
324  if (!data)
325  return NULL;
326  *size = total_length;
327  }
328 
329  return data;
330 }
331 
332 int av_packet_unpack_dictionary(const uint8_t *data, size_t size,
333  AVDictionary **dict)
334 {
335  const uint8_t *end;
336  int ret;
337 
338  if (!dict || !data || !size)
339  return 0;
340  end = data + size;
341  if (size && end[-1])
342  return AVERROR_INVALIDDATA;
343  while (data < end) {
344  const uint8_t *key = data;
345  const uint8_t *val = data + strlen(key) + 1;
346 
347  if (val >= end || !*key)
348  return AVERROR_INVALIDDATA;
349 
350  ret = av_dict_set(dict, key, val, 0);
351  if (ret < 0)
352  return ret;
353  data = val + strlen(val) + 1;
354  }
355 
356  return 0;
357 }
358 
360  size_t size)
361 {
362  int i;
363 
364  for (i = 0; i < pkt->side_data_elems; i++) {
365  if (pkt->side_data[i].type == type) {
366  if (size > pkt->side_data[i].size)
367  return AVERROR(ENOMEM);
368  pkt->side_data[i].size = size;
369  return 0;
370  }
371  }
372  return AVERROR(ENOENT);
373 }
374 
376 {
377  int i;
378 
379  dst->pts = src->pts;
380  dst->dts = src->dts;
381  dst->pos = src->pos;
382  dst->duration = src->duration;
383  dst->flags = src->flags;
384  dst->stream_index = src->stream_index;
385 
386  dst->side_data = NULL;
387  dst->side_data_elems = 0;
388  for (i = 0; i < src->side_data_elems; i++) {
389  enum AVPacketSideDataType type = src->side_data[i].type;
390  size_t size = src->side_data[i].size;
391  uint8_t *src_data = src->side_data[i].data;
392  uint8_t *dst_data = av_packet_new_side_data(dst, type, size);
393 
394  if (!dst_data) {
396  return AVERROR(ENOMEM);
397  }
398  memcpy(dst_data, src_data, size);
399  }
400 
401  return 0;
402 }
403 
405 {
409 }
410 
412 {
413  int ret;
414 
415  dst->buf = NULL;
416 
417  ret = av_packet_copy_props(dst, src);
418  if (ret < 0)
419  goto fail;
420 
421  if (!src->buf) {
422  ret = packet_alloc(&dst->buf, src->size);
423  if (ret < 0)
424  goto fail;
425  av_assert1(!src->size || src->data);
426  if (src->size)
427  memcpy(dst->buf->data, src->data, src->size);
428 
429  dst->data = dst->buf->data;
430  } else {
431  dst->buf = av_buffer_ref(src->buf);
432  if (!dst->buf) {
433  ret = AVERROR(ENOMEM);
434  goto fail;
435  }
436  dst->data = src->data;
437  }
438 
439  dst->size = src->size;
440 
441  return 0;
442 fail:
443  av_packet_unref(dst);
444  return ret;
445 }
446 
448 {
450 
451  if (!ret)
452  return ret;
453 
454  if (av_packet_ref(ret, src))
456 
457  return ret;
458 }
459 
461 {
462  *dst = *src;
464 }
465 
467 {
468  int ret;
469 
470  if (pkt->buf)
471  return 0;
472 
473  ret = packet_alloc(&pkt->buf, pkt->size);
474  if (ret < 0)
475  return ret;
476  av_assert1(!pkt->size || pkt->data);
477  if (pkt->size)
478  memcpy(pkt->buf->data, pkt->data, pkt->size);
479 
480  pkt->data = pkt->buf->data;
481 
482  return 0;
483 }
484 
486 {
487  AVBufferRef *buf = NULL;
488  int ret;
489 
490  if (pkt->buf && av_buffer_is_writable(pkt->buf))
491  return 0;
492 
493  ret = packet_alloc(&buf, pkt->size);
494  if (ret < 0)
495  return ret;
496  av_assert1(!pkt->size || pkt->data);
497  if (pkt->size)
498  memcpy(buf->data, pkt->data, pkt->size);
499 
501  pkt->buf = buf;
502  pkt->data = buf->data;
503 
504  return 0;
505 }
506 
508 {
509  if (pkt->pts != AV_NOPTS_VALUE)
510  pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb);
511  if (pkt->dts != AV_NOPTS_VALUE)
512  pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb);
513  if (pkt->duration > 0)
514  pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb);
515 }
516 
517 int avpriv_packet_list_put(PacketList **packet_buffer,
518  PacketList **plast_pktl,
519  AVPacket *pkt,
520  int (*copy)(AVPacket *dst, const AVPacket *src),
521  int flags)
522 {
523  PacketList *pktl = av_malloc(sizeof(PacketList));
524  int ret;
525 
526  if (!pktl)
527  return AVERROR(ENOMEM);
528 
529  if (copy) {
530  get_packet_defaults(&pktl->pkt);
531  ret = copy(&pktl->pkt, pkt);
532  if (ret < 0) {
533  av_free(pktl);
534  return ret;
535  }
536  } else {
538  if (ret < 0) {
539  av_free(pktl);
540  return ret;
541  }
542  av_packet_move_ref(&pktl->pkt, pkt);
543  }
544 
545  pktl->next = NULL;
546 
547  if (*packet_buffer)
548  (*plast_pktl)->next = pktl;
549  else
550  *packet_buffer = pktl;
551 
552  /* Add the packet in the buffered packet list. */
553  *plast_pktl = pktl;
554  return 0;
555 }
556 
558  PacketList **pkt_buffer_end,
559  AVPacket *pkt)
560 {
561  PacketList *pktl;
562  if (!*pkt_buffer)
563  return AVERROR(EAGAIN);
564  pktl = *pkt_buffer;
565  *pkt = pktl->pkt;
566  *pkt_buffer = pktl->next;
567  if (!pktl->next)
568  *pkt_buffer_end = NULL;
569  av_freep(&pktl);
570  return 0;
571 }
572 
573 void avpriv_packet_list_free(PacketList **pkt_buf, PacketList **pkt_buf_end)
574 {
575  PacketList *tmp = *pkt_buf;
576 
577  while (tmp) {
578  PacketList *pktl = tmp;
579  tmp = pktl->next;
580  av_packet_unref(&pktl->pkt);
581  av_freep(&pktl);
582  }
583  *pkt_buf = NULL;
584  *pkt_buf_end = NULL;
585 }
586 
587 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
588 {
589  uint8_t *side_data;
590  size_t side_data_size;
591  int i;
592 
593  side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS, &side_data_size);
594  if (!side_data) {
595  side_data_size = 4+4+8*error_count;
597  side_data_size);
598  }
599 
600  if (!side_data || side_data_size < 4+4+8*error_count)
601  return AVERROR(ENOMEM);
602 
603  AV_WL32(side_data , quality );
604  side_data[4] = pict_type;
605  side_data[5] = error_count;
606  for (i = 0; i<error_count; i++)
607  AV_WL64(side_data+8 + 8*i , error[i]);
608 
609  return 0;
610 }
611 
612 int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
613 {
615  uint8_t *side_data;
616  size_t side_data_size;
617 
618  side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
619  if (!side_data) {
620  side_data_size = sizeof(AVProducerReferenceTime);
621  side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT, side_data_size);
622  }
623 
624  if (!side_data || side_data_size < sizeof(AVProducerReferenceTime))
625  return AVERROR(ENOMEM);
626 
627  prft = (AVProducerReferenceTime *)side_data;
628  prft->wallclock = timestamp;
629  prft->flags = 0;
630 
631  return 0;
632 }
error
static void error(const char *err)
Definition: target_bsf_fuzzer.c:31
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:404
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
AV_PKT_DATA_NB
@ AV_PKT_DATA_NB
The number of side data types.
Definition: packet.h:309
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
AV_PKT_DATA_MPEGTS_STREAM_ID
@ AV_PKT_DATA_MPEGTS_STREAM_ID
MPEGTS stream ID as uint8_t, this is required to pass the stream ID information from the demuxer to t...
Definition: packet.h:215
AV_PKT_DATA_PARAM_CHANGE
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: packet.h:72
ff_side_data_set_encoder_stats
int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
Definition: avpacket.c:587
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
av_grow_packet
int av_grow_packet(AVPacket *pkt, int grow_by)
Increase packet size, correctly zeroing padding.
Definition: avpacket.c:117
AV_PKT_DATA_ENCRYPTION_INFO
@ AV_PKT_DATA_ENCRYPTION_INFO
This side data contains encryption info for how to decrypt the packet.
Definition: packet.h:255
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
AVPacketSideData
Definition: packet.h:314
AVProducerReferenceTime::wallclock
int64_t wallclock
A UTC timestamp, in microseconds, since Unix epoch (e.g, av_gettime()).
Definition: defs.h:157
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:373
av_packet_shrink_side_data
int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type, size_t size)
Shrink the already allocated side data buffer.
Definition: avpacket.c:359
AV_PKT_DATA_PALETTE
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
Definition: packet.h:46
PacketList
Definition: packet_internal.h:26
data
const char data[16]
Definition: mxf.c:143
AV_PKT_DATA_ENCRYPTION_INIT_INFO
@ AV_PKT_DATA_ENCRYPTION_INIT_INFO
This side data is encryption initialization data.
Definition: packet.h:249
AV_DICT_IGNORE_SUFFIX
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key,...
Definition: dict.h:68
AV_PKT_DATA_AFD
@ AV_PKT_DATA_AFD
Active Format Description data consisting of a single byte as specified in ETSI TS 101 154 using AVAc...
Definition: packet.h:261
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:391
mathematics.h
AVDictionary
Definition: dict.c:30
AV_PKT_DATA_SPHERICAL
@ AV_PKT_DATA_SPHERICAL
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: packet.h:228
av_packet_free_side_data
void av_packet_free_side_data(AVPacket *pkt)
Convenience function to free all the side data stored.
Definition: avpacket.c:177
packet_alloc
static int packet_alloc(AVBufferRef **buf, int size)
Definition: avpacket.c:79
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:70
quality
trying all byte sequences megabyte in length and selecting the best looking sequence will yield cases to try But a word about quality
Definition: rate_distortion.txt:12
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
AVPacketSideData::size
size_t size
Definition: packet.h:316
av_packet_add_side_data
int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as a packet side data.
Definition: avpacket.c:186
fail
#define fail()
Definition: checkasm.h:136
av_shrink_packet
void av_shrink_packet(AVPacket *pkt, int size)
Reduce packet size, correctly zeroing padding.
Definition: avpacket.c:109
ff_side_data_set_prft
int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
Definition: avpacket.c:612
val
static double val(void *priv, double ch)
Definition: aeval.c:75
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
AV_PKT_DATA_DISPLAYMATRIX
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
AV_PKT_DATA_STRINGS_METADATA
@ AV_PKT_DATA_STRINGS_METADATA
A list of zero terminated key/value strings.
Definition: packet.h:172
AV_PKT_DATA_REPLAYGAIN
@ AV_PKT_DATA_REPLAYGAIN
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: packet.h:99
av_packet_side_data_name
const char * av_packet_side_data_name(enum AVPacketSideDataType type)
Definition: avpacket.c:258
av_init_packet
void av_init_packet(AVPacket *pkt)
Definition: avpacket.c:36
avassert.h
AV_PKT_DATA_WEBVTT_SETTINGS
@ AV_PKT_DATA_WEBVTT_SETTINGS
The optional settings (rendering instructions) that immediately follow the timestamp specifier of a W...
Definition: packet.h:202
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_PKT_DATA_AUDIO_SERVICE_TYPE
@ AV_PKT_DATA_AUDIO_SERVICE_TYPE
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: packet.h:120
av_dict_get
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
av_new_packet
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:94
AV_PKT_DATA_STEREO3D
@ AV_PKT_DATA_STEREO3D
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: packet.h:114
AV_PKT_DATA_MASTERING_DISPLAY_METADATA
@ AV_PKT_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata (based on SMPTE-2086:2014).
Definition: packet.h:222
AVDictionaryEntry::key
char * key
Definition: dict.h:80
av_buffer_default_free
void av_buffer_default_free(void *opaque, uint8_t *data)
Default free callback, which calls av_free() on the buffer data.
Definition: buffer.c:62
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AV_PKT_DATA_ICC_PROFILE
@ AV_PKT_DATA_ICC_PROFILE
ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1.
Definition: packet.h:274
AVPacketSideData::data
uint8_t * data
Definition: packet.h:315
AV_PKT_DATA_DYNAMIC_HDR10_PLUS
@ AV_PKT_DATA_DYNAMIC_HDR10_PLUS
HDR10+ dynamic metadata associated with a video frame.
Definition: packet.h:299
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:141
key
const char * key
Definition: hwcontext_opencl.c:168
AV_PKT_DATA_PRFT
@ AV_PKT_DATA_PRFT
Producer Reference Time data corresponding to the AVProducerReferenceTime struct, usually exported by...
Definition: packet.h:268
pass
#define pass
Definition: fft_template.c:603
AVPacket::buf
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: packet.h:356
NULL
#define NULL
Definition: coverity.c:32
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:125
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVPacketSideData::type
enum AVPacketSideDataType type
Definition: packet.h:317
src
#define src
Definition: vp8dsp.c:255
PacketList::next
struct PacketList * next
Definition: packet_internal.h:27
AV_PKT_DATA_SUBTITLE_POSITION
@ AV_PKT_DATA_SUBTITLE_POSITION
Subtitle event position.
Definition: packet.h:183
AVProducerReferenceTime
This structure supplies correlation between a packet timestamp and a wall clock production time.
Definition: defs.h:153
av_packet_ref
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:411
av_packet_move_ref
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:460
AVProducerReferenceTime::flags
int flags
Definition: defs.h:158
av_buffer_create
AVBufferRef * av_buffer_create(uint8_t *data, size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:29
av_packet_from_data
int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size)
Initialize a reference-counted packet from av_malloc()ed data.
Definition: avpacket.c:161
AVPacket::size
int size
Definition: packet.h:374
copy
static void copy(const float *p1, float *p2, const int length)
Definition: vf_vaguedenoiser.c:194
get_packet_defaults
static void get_packet_defaults(AVPacket *pkt)
Definition: avpacket.c:50
size
int size
Definition: twinvq_data.h:10344
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AV_PKT_DATA_H263_MB_INFO
@ AV_PKT_DATA_H263_MB_INFO
An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of structures with info about macroblo...
Definition: packet.h:93
av_packet_unpack_dictionary
int av_packet_unpack_dictionary(const uint8_t *data, size_t size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:332
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:372
AV_WL64
#define AV_WL64(p, v)
Definition: intreadwrite.h:440
AVPacketSideDataType
AVPacketSideDataType
Definition: packet.h:40
av_packet_pack_dictionary
uint8_t * av_packet_pack_dictionary(AVDictionary *dict, size_t *size)
Pack a dictionary for use in side_data.
Definition: avpacket.c:297
AV_PKT_DATA_CONTENT_LIGHT_LEVEL
@ AV_PKT_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: packet.h:235
av_packet_make_refcounted
int av_packet_make_refcounted(AVPacket *pkt)
Ensure the data described by a given packet is reference counted.
Definition: avpacket.c:466
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:379
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:59
av_buffer_alloc
AVBufferRef * av_buffer_alloc(size_t size)
Allocate an AVBuffer of the given size using av_malloc().
Definition: buffer.c:67
av_packet_rescale_ts
void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
Convert valid timing fields (timestamps / durations) in a packet from one timebase to another.
Definition: avpacket.c:507
PacketList::pkt
AVPacket pkt
Definition: packet_internal.h:28
AVBufferRef::size
size_t size
Size of data in bytes.
Definition: buffer.h:94
AV_PKT_DATA_METADATA_UPDATE
@ AV_PKT_DATA_METADATA_UPDATE
A list of zero terminated key/value strings.
Definition: packet.h:209
av_realloc
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:134
AV_PKT_DATA_JP_DUALMONO
@ AV_PKT_DATA_JP_DUALMONO
An AV_PKT_DATA_JP_DUALMONO side data packet indicates that the packet may contain "dual mono" audio s...
Definition: packet.h:166
av_packet_copy_props
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:375
i
int i
Definition: input.c:406
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:366
packet.h
av_packet_get_side_data
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, size_t *size)
Get side information from packet.
Definition: avpacket.c:241
internal.h
common.h
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
AV_PKT_DATA_A53_CC
@ AV_PKT_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: packet.h:242
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:243
AV_PKT_DATA_CPB_PROPERTIES
@ AV_PKT_DATA_CPB_PROPERTIES
This side data corresponds to the AVCPBProperties struct.
Definition: packet.h:145
AV_PKT_DATA_SKIP_SAMPLES
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: packet.h:156
len
int len
Definition: vorbis_enc_data.h:426
av_buffer_is_writable
int av_buffer_is_writable(const AVBufferRef *buf)
Definition: buffer.c:133
ret
ret
Definition: filter_design.txt:187
AV_PKT_DATA_DOVI_CONF
@ AV_PKT_DATA_DOVI_CONF
DOVI configuration ref: dolby-vision-bitstreams-within-the-iso-base-media-file-format-v2....
Definition: packet.h:283
avpriv_packet_list_get
int avpriv_packet_list_get(PacketList **pkt_buffer, PacketList **pkt_buffer_end, AVPacket *pkt)
Remove the oldest AVPacket in the list and return it.
Definition: avpacket.c:557
AVPacket::side_data
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: packet.h:384
AV_PKT_DATA_S12M_TIMECODE
@ AV_PKT_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1:2014.
Definition: packet.h:291
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
av_packet_new_side_data
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, size_t size)
Allocate new information of a packet.
Definition: avpacket.c:220
AV_PKT_DATA_NEW_EXTRADATA
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: packet.h:55
av_packet_make_writable
int av_packet_make_writable(AVPacket *pkt)
Create a writable reference for the data described by a given packet, avoiding data copy if possible.
Definition: avpacket.c:485
AVPacket::stream_index
int stream_index
Definition: packet.h:375
av_buffer_ref
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
av_buffer_realloc
int av_buffer_realloc(AVBufferRef **pbuf, size_t size)
Reallocate a given buffer.
Definition: buffer.c:169
mem.h
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:82
packet_internal.h
AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL
@ AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL
Data found in BlockAdditional element of matroska container.
Definition: packet.h:191
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVDictionaryEntry
Definition: dict.h:79
AVPacket
This structure stores compressed data.
Definition: packet.h:350
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:393
AV_PKT_DATA_FALLBACK_TRACK
@ AV_PKT_DATA_FALLBACK_TRACK
This side data contains an integer value representing the stream index of a "fallback" track.
Definition: packet.h:140
bytestream.h
convert_header.str
string str
Definition: convert_header.py:20
AV_PKT_DATA_QUALITY_STATS
@ AV_PKT_DATA_QUALITY_STATS
This side data contains quality related information from the encoder.
Definition: packet.h:132
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AV_PKT_DATA_WEBVTT_IDENTIFIER
@ AV_PKT_DATA_WEBVTT_IDENTIFIER
The optional first identifier line of a WebVTT cue.
Definition: packet.h:196
AVDictionaryEntry::value
char * value
Definition: dict.h:81
avpriv_packet_list_put
int avpriv_packet_list_put(PacketList **packet_buffer, PacketList **plast_pktl, AVPacket *pkt, int(*copy)(AVPacket *dst, const AVPacket *src), int flags)
Append an AVPacket to the list.
Definition: avpacket.c:517
avpriv_packet_list_free
void avpriv_packet_list_free(PacketList **pkt_buf, PacketList **pkt_buf_end)
Wipe the list and unref all the packets in it.
Definition: avpacket.c:573
AVPacket::side_data_elems
int side_data_elems
Definition: packet.h:385
av_packet_clone
AVPacket * av_packet_clone(const AVPacket *src)
Create a new packet that references the same data as src.
Definition: avpacket.c:447