FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/packet.c
Date: 2026-08-20 07:07:51
Exec Total Coverage
Lines: 327 417 78.4%
Functions: 35 37 94.6%
Branches: 141 222 63.5%
Line Branch Exec Source
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/avutil.h"
26 #include "libavutil/container_fifo.h"
27 #include "libavutil/mathematics.h"
28 #include "libavutil/mem.h"
29 #include "libavutil/rational.h"
30
31 #include "defs.h"
32 #include "packet.h"
33 #include "packet_internal.h"
34
35 #if FF_API_INIT_PACKET
36 1410911 void av_init_packet(AVPacket *pkt)
37 {
38 1410911 pkt->pts = AV_NOPTS_VALUE;
39 1410911 pkt->dts = AV_NOPTS_VALUE;
40 1410911 pkt->pos = -1;
41 1410911 pkt->duration = 0;
42 1410911 pkt->flags = 0;
43 1410911 pkt->stream_index = 0;
44 1410911 pkt->buf = NULL;
45 1410911 pkt->side_data = NULL;
46 1410911 pkt->side_data_elems = 0;
47 1410911 pkt->opaque = NULL;
48 1410911 pkt->opaque_ref = NULL;
49 1410911 pkt->time_base = av_make_q(0, 1);
50 1410911 }
51 #endif
52
53 14042768 static void get_packet_defaults(AVPacket *pkt)
54 {
55 14042768 memset(pkt, 0, sizeof(*pkt));
56
57 14042768 pkt->pts = AV_NOPTS_VALUE;
58 14042768 pkt->dts = AV_NOPTS_VALUE;
59 14042768 pkt->pos = -1;
60 14042768 pkt->time_base = av_make_q(0, 1);
61 14042768 }
62
63 317529 AVPacket *av_packet_alloc(void)
64 {
65 317529 AVPacket *pkt = av_malloc(sizeof(AVPacket));
66
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 317529 if (!pkt)
67 ✗ return pkt;
68
69 317529 get_packet_defaults(pkt);
70
71 317529 return pkt;
72 }
73
74 398244 void av_packet_free(AVPacket **pkt)
75 {
76
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 398244 if (!pkt || !*pkt)
77 80715 return;
78
79 317529 av_packet_unref(*pkt);
80 317529 av_freep(pkt);
81 }
82
83 957385 static int packet_alloc(AVBufferRef **buf, int size)
84 {
85 int ret;
86
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 957385 if (size < 0 || size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
87 1 return AVERROR(EINVAL);
88
89 957384 ret = av_buffer_realloc(buf, size + AV_INPUT_BUFFER_PADDING_SIZE);
90
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 957384 if (ret < 0)
91 ✗ return ret;
92
93 957384 memset((*buf)->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
94
95 957384 return 0;
96 }
97
98 786991 int av_new_packet(AVPacket *pkt, int size)
99 {
100 786991 AVBufferRef *buf = NULL;
101 786991 int ret = packet_alloc(&buf, size);
102
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 786991 if (ret < 0)
103 1 return ret;
104
105 786990 get_packet_defaults(pkt);
106 786990 pkt->buf = buf;
107 786990 pkt->data = buf->data;
108 786990 pkt->size = size;
109
110 786990 return 0;
111 }
112
113 614888 void av_shrink_packet(AVPacket *pkt, int size)
114 {
115
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 614888 if (pkt->size <= size)
116 609364 return;
117 5524 pkt->size = size;
118 5524 memset(pkt->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
119 }
120
121 289238 int av_grow_packet(AVPacket *pkt, int grow_by)
122 {
123 int new_size;
124
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 289238 av_assert0((unsigned)pkt->size <= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
125 289238 if ((unsigned)grow_by >
126
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 289238 INT_MAX - (pkt->size + AV_INPUT_BUFFER_PADDING_SIZE))
127 1 return AVERROR(ENOMEM);
128
129 289237 new_size = pkt->size + grow_by + AV_INPUT_BUFFER_PADDING_SIZE;
130
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 289237 if (pkt->buf) {
131 size_t data_offset;
132 9327 uint8_t *old_data = pkt->data;
133
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 9327 if (pkt->data == NULL) {
134 ✗ data_offset = 0;
135 ✗ pkt->data = pkt->buf->data;
136 } else {
137 9327 data_offset = pkt->data - pkt->buf->data;
138
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 9327 if (data_offset > INT_MAX - new_size)
139 ✗ return AVERROR(ENOMEM);
140 }
141
142
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 11101 if (new_size + data_offset > pkt->buf->size ||
143 1774 !av_buffer_is_writable(pkt->buf)) {
144 int ret;
145
146 // allocate slightly more than requested to avoid excessive
147 // reallocations
148
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 7553 if (new_size + data_offset < INT_MAX - new_size/16)
149 7553 new_size += new_size/16;
150
151 7553 ret = av_buffer_realloc(&pkt->buf, new_size + data_offset);
152
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 7553 if (ret < 0) {
153 ✗ pkt->data = old_data;
154 ✗ return ret;
155 }
156 7553 pkt->data = pkt->buf->data + data_offset;
157 }
158 } else {
159 279910 pkt->buf = av_buffer_alloc(new_size);
160
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 279910 if (!pkt->buf)
161 ✗ return AVERROR(ENOMEM);
162
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 279910 if (pkt->size > 0)
163 ✗ memcpy(pkt->buf->data, pkt->data, pkt->size);
164 279910 pkt->data = pkt->buf->data;
165 }
166 289237 pkt->size += grow_by;
167 289237 memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
168
169 289237 return 0;
170 }
171
172 29 int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size)
173 {
174
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 29 if (size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
175 1 return AVERROR(EINVAL);
176
177 28 pkt->buf = av_buffer_create(data, size + AV_INPUT_BUFFER_PADDING_SIZE,
178 av_buffer_default_free, NULL, 0);
179
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 28 if (!pkt->buf)
180 ✗ return AVERROR(ENOMEM);
181
182 28 pkt->data = data;
183 28 pkt->size = size;
184
185 28 return 0;
186 }
187
188 8868903 void av_packet_free_side_data(AVPacket *pkt)
189 {
190 int i;
191
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 8948491 for (i = 0; i < pkt->side_data_elems; i++)
192 79588 av_freep(&pkt->side_data[i].data);
193 8868903 av_freep(&pkt->side_data);
194 8868903 pkt->side_data_elems = 0;
195 8868903 }
196
197 79599 int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
198 uint8_t *data, size_t size)
199 {
200 AVPacketSideData *tmp;
201 79599 int i, elems = pkt->side_data_elems;
202
203
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 79844 for (i = 0; i < elems; i++) {
204 254 AVPacketSideData *sd = &pkt->side_data[i];
205
206
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 254 if (sd->type == type) {
207 9 av_free(sd->data);
208 9 sd->data = data;
209 9 sd->size = size;
210 9 return 0;
211 }
212 }
213
214
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 79590 if ((unsigned)elems + 1 > AV_PKT_DATA_NB)
215 ✗ return AVERROR(ERANGE);
216
217 79590 tmp = av_realloc(pkt->side_data, (elems + 1) * sizeof(*tmp));
218
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 79590 if (!tmp)
219 ✗ return AVERROR(ENOMEM);
220
221 79590 pkt->side_data = tmp;
222 79590 pkt->side_data[elems].data = data;
223 79590 pkt->side_data[elems].size = size;
224 79590 pkt->side_data[elems].type = type;
225 79590 pkt->side_data_elems++;
226
227 79590 return 0;
228 }
229
230
231 78070 uint8_t *av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
232 size_t size)
233 {
234 int ret;
235 uint8_t *data;
236
237
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 78070 if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
238 ✗ return NULL;
239 78070 data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
240
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 78070 if (!data)
241 ✗ return NULL;
242
243 78070 ret = av_packet_add_side_data(pkt, type, data, size);
244
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 78070 if (ret < 0) {
245 ✗ av_freep(&data);
246 ✗ return NULL;
247 }
248
249 78070 return data;
250 }
251
252 864459 uint8_t *av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type,
253 size_t *size)
254 {
255 int i;
256
257
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 895238 for (i = 0; i < pkt->side_data_elems; i++) {
258
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 45110 if (pkt->side_data[i].type == type) {
259
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 14331 if (size)
260 1244 *size = pkt->side_data[i].size;
261 14331 return pkt->side_data[i].data;
262 }
263 }
264
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 850128 if (size)
265 666345 *size = 0;
266 850128 return NULL;
267 }
268
269 4946 const char *av_packet_side_data_name(enum AVPacketSideDataType type)
270 {
271
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 4946 switch(type) {
272 ✗ case AV_PKT_DATA_PALETTE: return "Palette";
273 12 case AV_PKT_DATA_NEW_EXTRADATA: return "New Extradata";
274 ✗ case AV_PKT_DATA_PARAM_CHANGE: return "Param Change";
275 ✗ case AV_PKT_DATA_H263_MB_INFO: return "H263 MB Info";
276 1 case AV_PKT_DATA_REPLAYGAIN: return "Replay Gain";
277 63 case AV_PKT_DATA_DISPLAYMATRIX: return "Display Matrix";
278 480 case AV_PKT_DATA_STEREO3D: return "Stereo 3D";
279 16 case AV_PKT_DATA_AUDIO_SERVICE_TYPE: return "Audio Service Type";
280 1463 case AV_PKT_DATA_QUALITY_STATS: return "Quality stats";
281 ✗ case AV_PKT_DATA_FALLBACK_TRACK: return "Fallback track";
282 403 case AV_PKT_DATA_CPB_PROPERTIES: return "CPB properties";
283 185 case AV_PKT_DATA_SKIP_SAMPLES: return "Skip Samples";
284 ✗ case AV_PKT_DATA_JP_DUALMONO: return "JP Dual Mono";
285 165 case AV_PKT_DATA_STRINGS_METADATA: return "Strings Metadata";
286 ✗ case AV_PKT_DATA_SUBTITLE_POSITION: return "Subtitle Position";
287 7 case AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL: return "Matroska BlockAdditional";
288 12 case AV_PKT_DATA_WEBVTT_IDENTIFIER: return "WebVTT ID";
289 24 case AV_PKT_DATA_WEBVTT_SETTINGS: return "WebVTT Settings";
290 ✗ case AV_PKT_DATA_METADATA_UPDATE: return "Metadata Update";
291 1836 case AV_PKT_DATA_MPEGTS_STREAM_ID: return "MPEGTS Stream ID";
292 49 case AV_PKT_DATA_MASTERING_DISPLAY_METADATA: return "Mastering display metadata";
293 45 case AV_PKT_DATA_CONTENT_LIGHT_LEVEL: return "Content light level metadata";
294 22 case AV_PKT_DATA_SPHERICAL: return "Spherical Mapping";
295 ✗ case AV_PKT_DATA_A53_CC: return "A53 Closed Captions";
296 4 case AV_PKT_DATA_ENCRYPTION_INIT_INFO: return "Encryption initialization data";
297 ✗ case AV_PKT_DATA_ENCRYPTION_INFO: return "Encryption info";
298 ✗ case AV_PKT_DATA_AFD: return "Active Format Description data";
299 ✗ case AV_PKT_DATA_PRFT: return "Producer Reference Time";
300 8 case AV_PKT_DATA_ICC_PROFILE: return "ICC Profile";
301 57 case AV_PKT_DATA_DOVI_CONF: return "DOVI configuration record";
302 ✗ case AV_PKT_DATA_S12M_TIMECODE: return "SMPTE ST 12-1:2014 timecode";
303 4 case AV_PKT_DATA_DYNAMIC_HDR10_PLUS: return "HDR10+ Dynamic Metadata (SMPTE 2094-40)";
304 ✗ case AV_PKT_DATA_DYNAMIC_HDR_SMPTE_2094_APP5:return "HDR Dynamic Metadata (SMPTE 2094-50)";
305 8 case AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT:return "Ambient viewing environment";
306 ✗ case AV_PKT_DATA_IAMF_MIX_GAIN_PARAM: return "IAMF Mix Gain Parameter Data";
307 ✗ case AV_PKT_DATA_IAMF_DEMIXING_INFO_PARAM: return "IAMF Demixing Info Parameter Data";
308 ✗ case AV_PKT_DATA_IAMF_RECON_GAIN_INFO_PARAM: return "IAMF Recon Gain Info Parameter Data";
309 25 case AV_PKT_DATA_FRAME_CROPPING: return "Frame Cropping";
310 ✗ case AV_PKT_DATA_LCEVC: return "LCEVC NAL data";
311 2 case AV_PKT_DATA_3D_REFERENCE_DISPLAYS: return "3D Reference Displays Info";
312 ✗ case AV_PKT_DATA_RTCP_SR: return "RTCP Sender Report";
313 23 case AV_PKT_DATA_EXIF: return "EXIF metadata";
314 32 case AV_PKT_DATA_HEVC_CONF: return "HEVC enhancement-layer decoder configuration";
315 }
316 ✗ return NULL;
317 }
318
319 658 uint8_t *av_packet_pack_dictionary(const AVDictionary *dict, size_t *size)
320 {
321 658 uint8_t *data = NULL;
322 658 *size = 0;
323
324
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 658 if (!dict)
325 ✗ return NULL;
326
327
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 1316 for (int pass = 0; pass < 2; pass++) {
328 1316 const AVDictionaryEntry *t = NULL;
329 1316 size_t total_length = 0;
330
331
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 6526 while ((t = av_dict_iterate(dict, t))) {
332
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 15630 for (int i = 0; i < 2; i++) {
333
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 10420 const char *str = i ? t->value : t->key;
334 10420 const size_t len = strlen(str) + 1;
335
336
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 10420 if (pass)
337 5210 memcpy(data + total_length, str, len);
338
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 5210 else if (len > SIZE_MAX - total_length)
339 ✗ return NULL;
340 10420 total_length += len;
341 }
342 }
343
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 1316 if (pass)
344 658 break;
345 658 data = av_malloc(total_length);
346
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 658 if (!data)
347 ✗ return NULL;
348 658 *size = total_length;
349 }
350
351 658 return data;
352 }
353
354 10456 int av_packet_unpack_dictionary(const uint8_t *data, size_t size,
355 AVDictionary **dict)
356 {
357 const uint8_t *end;
358 int ret;
359
360
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 10456 if (!dict || !data || !size)
361 9840 return 0;
362 616 end = data + size;
363
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 616 if (end[-1])
364 ✗ return AVERROR_INVALIDDATA;
365
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 3193 while (data < end) {
366 2577 const uint8_t *key = data;
367 2577 const uint8_t *val = data + strlen(key) + 1;
368
369
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 2577 if (val >= end || !*key)
370 ✗ return AVERROR_INVALIDDATA;
371
372 2577 ret = av_dict_set(dict, key, val, 0);
373
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 2577 if (ret < 0)
374 ✗ return ret;
375 2577 data = val + strlen(val) + 1;
376 }
377
378 616 return 0;
379 }
380
381 ✗ int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
382 size_t size)
383 {
384 int i;
385
386 ✗ for (i = 0; i < pkt->side_data_elems; i++) {
387 ✗ if (pkt->side_data[i].type == type) {
388 ✗ if (size > pkt->side_data[i].size)
389 ✗ return AVERROR(ENOMEM);
390 ✗ pkt->side_data[i].size = size;
391 ✗ return 0;
392 }
393 }
394 ✗ return AVERROR(ENOENT);
395 }
396
397 883409 int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
398 {
399 int i, ret;
400
401 883409 dst->pts = src->pts;
402 883409 dst->dts = src->dts;
403 883409 dst->pos = src->pos;
404 883409 dst->duration = src->duration;
405 883409 dst->flags = src->flags;
406 883409 dst->stream_index = src->stream_index;
407 883409 dst->opaque = src->opaque;
408 883409 dst->time_base = src->time_base;
409 883409 dst->opaque_ref = NULL;
410 883409 dst->side_data = NULL;
411 883409 dst->side_data_elems = 0;
412
413 883409 ret = av_buffer_replace(&dst->opaque_ref, src->opaque_ref);
414
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 883409 if (ret < 0)
415 ✗ return ret;
416
417
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 906288 for (i = 0; i < src->side_data_elems; i++) {
418 22879 enum AVPacketSideDataType type = src->side_data[i].type;
419 22879 size_t size = src->side_data[i].size;
420 22879 uint8_t *src_data = src->side_data[i].data;
421 22879 uint8_t *dst_data = av_packet_new_side_data(dst, type, size);
422
423
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 22879 if (!dst_data) {
424 ✗ av_buffer_unref(&dst->opaque_ref);
425 ✗ av_packet_free_side_data(dst);
426 ✗ return AVERROR(ENOMEM);
427 }
428 22879 memcpy(dst_data, src_data, size);
429 }
430
431 883409 return 0;
432 }
433
434 8868903 void av_packet_unref(AVPacket *pkt)
435 {
436 8868903 av_packet_free_side_data(pkt);
437 8868903 av_buffer_unref(&pkt->opaque_ref);
438 8868903 av_buffer_unref(&pkt->buf);
439 8868903 get_packet_defaults(pkt);
440 8868903 }
441
442 438331 int av_packet_ref(AVPacket *dst, const AVPacket *src)
443 {
444 int ret;
445
446 438331 dst->buf = NULL;
447
448 438331 ret = av_packet_copy_props(dst, src);
449
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 438331 if (ret < 0)
450 ✗ goto fail;
451
452
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 438331 if (!src->buf) {
453 1030 ret = packet_alloc(&dst->buf, src->size);
454
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 1030 if (ret < 0)
455 ✗ goto fail;
456 av_assert1(!src->size || src->data);
457
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 1030 if (src->size)
458 1030 memcpy(dst->buf->data, src->data, src->size);
459
460 1030 dst->data = dst->buf->data;
461 } else {
462 437301 dst->buf = av_buffer_ref(src->buf);
463
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 437301 if (!dst->buf) {
464 ✗ ret = AVERROR(ENOMEM);
465 ✗ goto fail;
466 }
467 437301 dst->data = src->data;
468 }
469
470 438331 dst->size = src->size;
471
472 438331 return 0;
473 ✗ fail:
474 ✗ av_packet_unref(dst);
475 ✗ return ret;
476 }
477
478 6 AVPacket *av_packet_clone(const AVPacket *src)
479 {
480 6 AVPacket *ret = av_packet_alloc();
481
482
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 6 if (!ret)
483 ✗ return ret;
484
485
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 6 if (av_packet_ref(ret, src))
486 ✗ av_packet_free(&ret);
487
488 6 return ret;
489 }
490
491 4069346 void av_packet_move_ref(AVPacket *dst, AVPacket *src)
492 {
493 4069346 *dst = *src;
494 4069346 get_packet_defaults(src);
495 4069346 }
496
497 2249824 int av_packet_make_refcounted(AVPacket *pkt)
498 {
499 int ret;
500
501
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 2249824 if (pkt->buf)
502 2080460 return 0;
503
504 169364 ret = packet_alloc(&pkt->buf, pkt->size);
505
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 169364 if (ret < 0)
506 ✗ return ret;
507 av_assert1(!pkt->size || pkt->data);
508
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 169364 if (pkt->size)
509 167804 memcpy(pkt->buf->data, pkt->data, pkt->size);
510
511 169364 pkt->data = pkt->buf->data;
512
513 169364 return 0;
514 }
515
516 142 int av_packet_make_writable(AVPacket *pkt)
517 {
518 142 AVBufferRef *buf = NULL;
519 int ret;
520
521
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 142 if (pkt->buf && av_buffer_is_writable(pkt->buf))
522 142 return 0;
523
524 ✗ ret = packet_alloc(&buf, pkt->size);
525 ✗ if (ret < 0)
526 ✗ return ret;
527 av_assert1(!pkt->size || pkt->data);
528 ✗ if (pkt->size)
529 ✗ memcpy(buf->data, pkt->data, pkt->size);
530
531 ✗ av_buffer_unref(&pkt->buf);
532 ✗ pkt->buf = buf;
533 ✗ pkt->data = buf->data;
534
535 ✗ return 0;
536 }
537
538 568293 void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
539 {
540
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 568293 if (pkt->pts != AV_NOPTS_VALUE)
541 552724 pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb);
542
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 568293 if (pkt->dts != AV_NOPTS_VALUE)
543 568277 pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb);
544
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 568293 if (pkt->duration > 0)
545 549161 pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb);
546 568293 }
547
548 ✗ int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
549 {
550 AVProducerReferenceTime *prft;
551 uint8_t *side_data;
552 size_t side_data_size;
553
554 ✗ side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
555 ✗ if (!side_data) {
556 ✗ side_data_size = sizeof(AVProducerReferenceTime);
557 ✗ side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT, side_data_size);
558 }
559
560 ✗ if (!side_data || side_data_size < sizeof(AVProducerReferenceTime))
561 ✗ return AVERROR(ENOMEM);
562
563 ✗ prft = (AVProducerReferenceTime *)side_data;
564 ✗ prft->wallclock = timestamp;
565 ✗ prft->flags = 0;
566
567 ✗ return 0;
568 }
569
570 1202385 const AVPacketSideData *av_packet_side_data_get(const AVPacketSideData *sd, int nb_sd,
571 enum AVPacketSideDataType type)
572 {
573
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 1273146 for (int i = 0; i < nb_sd; i++)
574
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 70928 if (sd[i].type == type)
575 167 return &sd[i];
576
577 1202218 return NULL;
578 }
579
580 1005 static AVPacketSideData *packet_side_data_add(AVPacketSideData **psd, int *pnb_sd,
581 enum AVPacketSideDataType type,
582 void *data, size_t size)
583 {
584 1005 AVPacketSideData *sd = *psd, *tmp;
585 1005 int nb_sd = *pnb_sd;
586
587
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 1146 for (int i = 0; i < nb_sd; i++) {
588
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 142 if (sd[i].type != type)
589 141 continue;
590
591 1 av_free(sd[i].data);
592 1 sd[i].data = data;
593 1 sd[i].size = size;
594 1 return &sd[i];
595 }
596
597
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 1004 if (nb_sd == INT_MAX)
598 ✗ return NULL;
599
600 1004 tmp = av_realloc_array(sd, nb_sd + 1, sizeof(*tmp));
601
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 1004 if (!tmp)
602 ✗ return NULL;
603
604 1004 *psd = sd = tmp;
605 1004 sd[nb_sd].type = type;
606 1004 sd[nb_sd].data = data;
607 1004 sd[nb_sd].size = size;
608 1004 *pnb_sd = nb_sd + 1;
609
610 1004 return &sd[nb_sd];
611 }
612
613 547 AVPacketSideData *av_packet_side_data_add(AVPacketSideData **psd, int *pnb_sd,
614 enum AVPacketSideDataType type,
615 void *data, size_t size, int flags)
616 {
617 547 return packet_side_data_add(psd, pnb_sd, type, data, size);
618 }
619
620 458 AVPacketSideData *av_packet_side_data_new(AVPacketSideData **psd, int *pnb_sd,
621 enum AVPacketSideDataType type,
622 size_t size, int flags)
623 {
624 458 AVPacketSideData *sd = NULL;
625 uint8_t *data;
626
627
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 458 if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
628 ✗ return NULL;
629
630 458 data = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
631
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 458 if (!data)
632 ✗ return NULL;
633 458 memset(data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
634
635 458 sd = packet_side_data_add(psd, pnb_sd, type, data, size);
636
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 458 if (!sd)
637 ✗ av_freep(&data);
638
639 458 return sd;
640 }
641
642 6 void av_packet_side_data_remove(AVPacketSideData *sd, int *pnb_sd,
643 enum AVPacketSideDataType type)
644 {
645 6 int nb_sd = *pnb_sd;
646
647
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 6 for (int i = nb_sd - 1; i >= 0; i--) {
648
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 6 if (sd[i].type != type)
649 ✗ continue;
650 6 av_free(sd[i].data);
651 6 sd[i] = sd[--nb_sd];
652 6 break;
653 }
654
655 6 *pnb_sd = nb_sd;
656 6 }
657
658 344709 void av_packet_side_data_free(AVPacketSideData **psd, int *pnb_sd)
659 {
660 344709 AVPacketSideData *sd = *psd;
661 344709 int nb_sd = *pnb_sd;
662
663
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 350717 for (int i = 0; i < nb_sd; i++)
664 6008 av_free(sd[i].data);
665
666 344709 av_freep(psd);
667 344709 *pnb_sd = 0;
668 344709 }
669
670 70287 static void *container_packet_alloc(void *opaque)
671 {
672 70287 return av_packet_alloc();
673 }
674
675 1043633 static void container_packet_reset(void *opaque, void *obj)
676 {
677 1043633 av_packet_unref(obj);
678 1043633 }
679
680 70287 static void container_packet_free(void *opaque, void *obj)
681 {
682 70287 AVPacket *pkt = obj;
683 70287 av_packet_free(&pkt);
684 70287 }
685
686 2059028 static int container_packet_transfer(void *opaque, void *dst, void *src, unsigned flags)
687 {
688
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 2059028 if (flags & AV_CONTAINER_FIFO_FLAG_REF)
689 ✗ return av_packet_ref(dst, src);
690
691 2059028 av_packet_move_ref(dst, src);
692 2059028 return 0;
693 }
694
695 15844 AVContainerFifo *av_container_fifo_alloc_avpacket(unsigned flags)
696 {
697 15844 return av_container_fifo_alloc(NULL, container_packet_alloc,
698 container_packet_reset, container_packet_free,
699 container_packet_transfer, 0);
700 }
701