FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/packet.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 341 449 75.9%
Functions: 33 36 91.7%
Branches: 147 241 61.0%
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/intreadwrite.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 1349833 void av_init_packet(AVPacket *pkt)
37 {
38 1349833 pkt->pts = AV_NOPTS_VALUE;
39 1349833 pkt->dts = AV_NOPTS_VALUE;
40 1349833 pkt->pos = -1;
41 1349833 pkt->duration = 0;
42 1349833 pkt->flags = 0;
43 1349833 pkt->stream_index = 0;
44 1349833 pkt->buf = NULL;
45 1349833 pkt->side_data = NULL;
46 1349833 pkt->side_data_elems = 0;
47 1349833 pkt->opaque = NULL;
48 1349833 pkt->opaque_ref = NULL;
49 1349833 pkt->time_base = av_make_q(0, 1);
50 1349833 }
51 #endif
52
53 12225379 static void get_packet_defaults(AVPacket *pkt)
54 {
55 12225379 memset(pkt, 0, sizeof(*pkt));
56
57 12225379 pkt->pts = AV_NOPTS_VALUE;
58 12225379 pkt->dts = AV_NOPTS_VALUE;
59 12225379 pkt->pos = -1;
60 12225379 pkt->time_base = av_make_q(0, 1);
61 12225379 }
62
63 280256 AVPacket *av_packet_alloc(void)
64 {
65 280256 AVPacket *pkt = av_malloc(sizeof(AVPacket));
66
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 280256 if (!pkt)
67 ✗ return pkt;
68
69 280256 get_packet_defaults(pkt);
70
71 280256 return pkt;
72 }
73
74 355448 void av_packet_free(AVPacket **pkt)
75 {
76
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 355448 if (!pkt || !*pkt)
77 75192 return;
78
79 280256 av_packet_unref(*pkt);
80 280256 av_freep(pkt);
81 }
82
83 881088 static int packet_alloc(AVBufferRef **buf, int size)
84 {
85 int ret;
86
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 881088 if (size < 0 || size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
87 1 return AVERROR(EINVAL);
88
89 881087 ret = av_buffer_realloc(buf, size + AV_INPUT_BUFFER_PADDING_SIZE);
90
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 881087 if (ret < 0)
91 ✗ return ret;
92
93 881087 memset((*buf)->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
94
95 881087 return 0;
96 }
97
98 759656 int av_new_packet(AVPacket *pkt, int size)
99 {
100 759656 AVBufferRef *buf = NULL;
101 759656 int ret = packet_alloc(&buf, size);
102
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 759656 if (ret < 0)
103 1 return ret;
104
105 759655 get_packet_defaults(pkt);
106 759655 pkt->buf = buf;
107 759655 pkt->data = buf->data;
108 759655 pkt->size = size;
109
110 759655 return 0;
111 }
112
113 593968 void av_shrink_packet(AVPacket *pkt, int size)
114 {
115
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 593968 if (pkt->size <= size)
116 588677 return;
117 5291 pkt->size = size;
118 5291 memset(pkt->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
119 }
120
121 278402 int av_grow_packet(AVPacket *pkt, int grow_by)
122 {
123 int new_size;
124
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 278402 av_assert0((unsigned)pkt->size <= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
125 278402 if ((unsigned)grow_by >
126
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 278402 INT_MAX - (pkt->size + AV_INPUT_BUFFER_PADDING_SIZE))
127 1 return AVERROR(ENOMEM);
128
129 278401 new_size = pkt->size + grow_by + AV_INPUT_BUFFER_PADDING_SIZE;
130
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 278401 if (pkt->buf) {
131 size_t data_offset;
132 13772 uint8_t *old_data = pkt->data;
133
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 13772 if (pkt->data == NULL) {
134 ✗ data_offset = 0;
135 ✗ pkt->data = pkt->buf->data;
136 } else {
137 13772 data_offset = pkt->data - pkt->buf->data;
138
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 13772 if (data_offset > INT_MAX - new_size)
139 ✗ return AVERROR(ENOMEM);
140 }
141
142
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 16757 if (new_size + data_offset > pkt->buf->size ||
143 2985 !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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 10787 if (new_size + data_offset < INT_MAX - new_size/16)
149 10787 new_size += new_size/16;
150
151 10787 ret = av_buffer_realloc(&pkt->buf, new_size + data_offset);
152
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 10787 if (ret < 0) {
153 ✗ pkt->data = old_data;
154 ✗ return ret;
155 }
156 10787 pkt->data = pkt->buf->data + data_offset;
157 }
158 } else {
159 264629 pkt->buf = av_buffer_alloc(new_size);
160
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 264629 if (!pkt->buf)
161 ✗ return AVERROR(ENOMEM);
162
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 264629 if (pkt->size > 0)
163 ✗ memcpy(pkt->buf->data, pkt->data, pkt->size);
164 264629 pkt->data = pkt->buf->data;
165 }
166 278401 pkt->size += grow_by;
167 278401 memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
168
169 278401 return 0;
170 }
171
172 3 int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size)
173 {
174
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 3 if (size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
175 1 return AVERROR(EINVAL);
176
177 2 pkt->buf = av_buffer_create(data, size + AV_INPUT_BUFFER_PADDING_SIZE,
178 av_buffer_default_free, NULL, 0);
179
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 2 if (!pkt->buf)
180 ✗ return AVERROR(ENOMEM);
181
182 2 pkt->data = data;
183 2 pkt->size = size;
184
185 2 return 0;
186 }
187
188 7662243 void av_packet_free_side_data(AVPacket *pkt)
189 {
190 int i;
191
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 7717547 for (i = 0; i < pkt->side_data_elems; i++)
192 55304 av_freep(&pkt->side_data[i].data);
193 7662243 av_freep(&pkt->side_data);
194 7662243 pkt->side_data_elems = 0;
195 7662243 }
196
197 55306 int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
198 uint8_t *data, size_t size)
199 {
200 AVPacketSideData *tmp;
201 55306 int i, elems = pkt->side_data_elems;
202
203
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 55520 for (i = 0; i < elems; i++) {
204 216 AVPacketSideData *sd = &pkt->side_data[i];
205
206
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 216 if (sd->type == type) {
207 2 av_free(sd->data);
208 2 sd->data = data;
209 2 sd->size = size;
210 2 return 0;
211 }
212 }
213
214
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 55304 if ((unsigned)elems + 1 > AV_PKT_DATA_NB)
215 ✗ return AVERROR(ERANGE);
216
217 55304 tmp = av_realloc(pkt->side_data, (elems + 1) * sizeof(*tmp));
218
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 55304 if (!tmp)
219 ✗ return AVERROR(ENOMEM);
220
221 55304 pkt->side_data = tmp;
222 55304 pkt->side_data[elems].data = data;
223 55304 pkt->side_data[elems].size = size;
224 55304 pkt->side_data[elems].type = type;
225 55304 pkt->side_data_elems++;
226
227 55304 return 0;
228 }
229
230
231 53871 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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 53871 if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
238 ✗ return NULL;
239 53871 data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
240
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 53871 if (!data)
241 ✗ return NULL;
242
243 53871 ret = av_packet_add_side_data(pkt, type, data, size);
244
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 53871 if (ret < 0) {
245 ✗ av_freep(&data);
246 ✗ return NULL;
247 }
248
249 53871 return data;
250 }
251
252 1166071 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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 1183640 for (i = 0; i < pkt->side_data_elems; i++) {
258
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 29978 if (pkt->side_data[i].type == type) {
259
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 12409 if (size)
260 1076 *size = pkt->side_data[i].size;
261 12409 return pkt->side_data[i].data;
262 }
263 }
264
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 1153662 if (size)
265 996391 *size = 0;
266 1153662 return NULL;
267 }
268
269 1605 const char *av_packet_side_data_name(enum AVPacketSideDataType type)
270 {
271
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 1605 switch(type) {
272 ✗ case AV_PKT_DATA_PALETTE: return "Palette";
273 5 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 ✗ case AV_PKT_DATA_REPLAYGAIN: return "Replay Gain";
277 8 case AV_PKT_DATA_DISPLAYMATRIX: return "Display Matrix";
278 9 case AV_PKT_DATA_STEREO3D: return "Stereo 3D";
279 4 case AV_PKT_DATA_AUDIO_SERVICE_TYPE: return "Audio Service Type";
280 ✗ case AV_PKT_DATA_QUALITY_STATS: return "Quality stats";
281 ✗ case AV_PKT_DATA_FALLBACK_TRACK: return "Fallback track";
282 13 case AV_PKT_DATA_CPB_PROPERTIES: return "CPB properties";
283 20 case AV_PKT_DATA_SKIP_SAMPLES: return "Skip Samples";
284 ✗ case AV_PKT_DATA_JP_DUALMONO: return "JP Dual Mono";
285 162 case AV_PKT_DATA_STRINGS_METADATA: return "Strings Metadata";
286 ✗ case AV_PKT_DATA_SUBTITLE_POSITION: return "Subtitle Position";
287 ✗ case AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL: return "Matroska BlockAdditional";
288 8 case AV_PKT_DATA_WEBVTT_IDENTIFIER: return "WebVTT ID";
289 16 case AV_PKT_DATA_WEBVTT_SETTINGS: return "WebVTT Settings";
290 ✗ case AV_PKT_DATA_METADATA_UPDATE: return "Metadata Update";
291 1338 case AV_PKT_DATA_MPEGTS_STREAM_ID: return "MPEGTS Stream ID";
292 6 case AV_PKT_DATA_MASTERING_DISPLAY_METADATA: return "Mastering display metadata";
293 5 case AV_PKT_DATA_CONTENT_LIGHT_LEVEL: return "Content light level metadata";
294 4 case AV_PKT_DATA_SPHERICAL: return "Spherical Mapping";
295 ✗ case AV_PKT_DATA_A53_CC: return "A53 Closed Captions";
296 ✗ 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 ✗ case AV_PKT_DATA_ICC_PROFILE: return "ICC Profile";
301 2 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 2 case AV_PKT_DATA_DYNAMIC_HDR10_PLUS: return "HDR10+ Dynamic Metadata (SMPTE 2094-40)";
304 2 case AV_PKT_DATA_AMBIENT_VIEWING_ENVIRONMENT:return "Ambient viewing environment";
305 ✗ case AV_PKT_DATA_IAMF_MIX_GAIN_PARAM: return "IAMF Mix Gain Parameter Data";
306 ✗ case AV_PKT_DATA_IAMF_DEMIXING_INFO_PARAM: return "IAMF Demixing Info Parameter Data";
307 ✗ case AV_PKT_DATA_IAMF_RECON_GAIN_INFO_PARAM: return "IAMF Recon Gain Info Parameter Data";
308 1 case AV_PKT_DATA_FRAME_CROPPING: return "Frame Cropping";
309 ✗ case AV_PKT_DATA_LCEVC: return "LCEVC NAL data";
310 }
311 ✗ return NULL;
312 }
313
314 612 uint8_t *av_packet_pack_dictionary(AVDictionary *dict, size_t *size)
315 {
316 612 uint8_t *data = NULL;
317 612 *size = 0;
318
319
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 612 if (!dict)
320 ✗ return NULL;
321
322
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 1224 for (int pass = 0; pass < 2; pass++) {
323 1224 const AVDictionaryEntry *t = NULL;
324 1224 size_t total_length = 0;
325
326
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 6202 while ((t = av_dict_iterate(dict, t))) {
327
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 14934 for (int i = 0; i < 2; i++) {
328
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 9956 const char *str = i ? t->value : t->key;
329 9956 const size_t len = strlen(str) + 1;
330
331
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 9956 if (pass)
332 4978 memcpy(data + total_length, str, len);
333
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 4978 else if (len > SIZE_MAX - total_length)
334 ✗ return NULL;
335 9956 total_length += len;
336 }
337 }
338
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 1224 if (pass)
339 612 break;
340 612 data = av_malloc(total_length);
341
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 612 if (!data)
342 ✗ return NULL;
343 612 *size = total_length;
344 }
345
346 612 return data;
347 }
348
349 408879 int av_packet_unpack_dictionary(const uint8_t *data, size_t size,
350 AVDictionary **dict)
351 {
352 const uint8_t *end;
353 int ret;
354
355
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 408879 if (!dict || !data || !size)
356 408319 return 0;
357 560 end = data + size;
358
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 560 if (size && end[-1])
359 ✗ return AVERROR_INVALIDDATA;
360
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 2959 while (data < end) {
361 2399 const uint8_t *key = data;
362 2399 const uint8_t *val = data + strlen(key) + 1;
363
364
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 2399 if (val >= end || !*key)
365 ✗ return AVERROR_INVALIDDATA;
366
367 2399 ret = av_dict_set(dict, key, val, 0);
368
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 2399 if (ret < 0)
369 ✗ return ret;
370 2399 data = val + strlen(val) + 1;
371 }
372
373 560 return 0;
374 }
375
376 ✗ int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
377 size_t size)
378 {
379 int i;
380
381 ✗ for (i = 0; i < pkt->side_data_elems; i++) {
382 ✗ if (pkt->side_data[i].type == type) {
383 ✗ if (size > pkt->side_data[i].size)
384 ✗ return AVERROR(ENOMEM);
385 ✗ pkt->side_data[i].size = size;
386 ✗ return 0;
387 }
388 }
389 ✗ return AVERROR(ENOENT);
390 }
391
392 799292 int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
393 {
394 int i, ret;
395
396 799292 dst->pts = src->pts;
397 799292 dst->dts = src->dts;
398 799292 dst->pos = src->pos;
399 799292 dst->duration = src->duration;
400 799292 dst->flags = src->flags;
401 799292 dst->stream_index = src->stream_index;
402 799292 dst->opaque = src->opaque;
403 799292 dst->time_base = src->time_base;
404 799292 dst->opaque_ref = NULL;
405 799292 dst->side_data = NULL;
406 799292 dst->side_data_elems = 0;
407
408 799292 ret = av_buffer_replace(&dst->opaque_ref, src->opaque_ref);
409
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 799292 if (ret < 0)
410 ✗ return ret;
411
412
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 811748 for (i = 0; i < src->side_data_elems; i++) {
413 12456 enum AVPacketSideDataType type = src->side_data[i].type;
414 12456 size_t size = src->side_data[i].size;
415 12456 uint8_t *src_data = src->side_data[i].data;
416 12456 uint8_t *dst_data = av_packet_new_side_data(dst, type, size);
417
418
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 12456 if (!dst_data) {
419 ✗ av_buffer_unref(&dst->opaque_ref);
420 ✗ av_packet_free_side_data(dst);
421 ✗ return AVERROR(ENOMEM);
422 }
423 12456 memcpy(dst_data, src_data, size);
424 }
425
426 799292 return 0;
427 }
428
429 7662243 void av_packet_unref(AVPacket *pkt)
430 {
431 7662243 av_packet_free_side_data(pkt);
432 7662243 av_buffer_unref(&pkt->opaque_ref);
433 7662243 av_buffer_unref(&pkt->buf);
434 7662243 get_packet_defaults(pkt);
435 7662243 }
436
437 396789 int av_packet_ref(AVPacket *dst, const AVPacket *src)
438 {
439 int ret;
440
441 396789 dst->buf = NULL;
442
443 396789 ret = av_packet_copy_props(dst, src);
444
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 396789 if (ret < 0)
445 ✗ goto fail;
446
447
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 396789 if (!src->buf) {
448 1030 ret = packet_alloc(&dst->buf, src->size);
449
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 1030 if (ret < 0)
450 ✗ goto fail;
451 av_assert1(!src->size || src->data);
452
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 1030 if (src->size)
453 1030 memcpy(dst->buf->data, src->data, src->size);
454
455 1030 dst->data = dst->buf->data;
456 } else {
457 395759 dst->buf = av_buffer_ref(src->buf);
458
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 395759 if (!dst->buf) {
459 ✗ ret = AVERROR(ENOMEM);
460 ✗ goto fail;
461 }
462 395759 dst->data = src->data;
463 }
464
465 396789 dst->size = src->size;
466
467 396789 return 0;
468 ✗ fail:
469 ✗ av_packet_unref(dst);
470 ✗ return ret;
471 }
472
473 6 AVPacket *av_packet_clone(const AVPacket *src)
474 {
475 6 AVPacket *ret = av_packet_alloc();
476
477
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 6 if (!ret)
478 ✗ return ret;
479
480
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 6 if (av_packet_ref(ret, src))
481 ✗ av_packet_free(&ret);
482
483 6 return ret;
484 }
485
486 3523169 void av_packet_move_ref(AVPacket *dst, AVPacket *src)
487 {
488 3523169 *dst = *src;
489 3523169 get_packet_defaults(src);
490 3523169 }
491
492 2047276 int av_packet_make_refcounted(AVPacket *pkt)
493 {
494 int ret;
495
496
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 2047276 if (pkt->buf)
497 1926874 return 0;
498
499 120402 ret = packet_alloc(&pkt->buf, pkt->size);
500
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 120402 if (ret < 0)
501 ✗ return ret;
502 av_assert1(!pkt->size || pkt->data);
503
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 120402 if (pkt->size)
504 118872 memcpy(pkt->buf->data, pkt->data, pkt->size);
505
506 120402 pkt->data = pkt->buf->data;
507
508 120402 return 0;
509 }
510
511 142 int av_packet_make_writable(AVPacket *pkt)
512 {
513 142 AVBufferRef *buf = NULL;
514 int ret;
515
516
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 142 if (pkt->buf && av_buffer_is_writable(pkt->buf))
517 142 return 0;
518
519 ✗ ret = packet_alloc(&buf, pkt->size);
520 ✗ if (ret < 0)
521 ✗ return ret;
522 av_assert1(!pkt->size || pkt->data);
523 ✗ if (pkt->size)
524 ✗ memcpy(buf->data, pkt->data, pkt->size);
525
526 ✗ av_buffer_unref(&pkt->buf);
527 ✗ pkt->buf = buf;
528 ✗ pkt->data = buf->data;
529
530 ✗ return 0;
531 }
532
533 467366 void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
534 {
535
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 467366 if (pkt->pts != AV_NOPTS_VALUE)
536 452185 pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb);
537
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 467366 if (pkt->dts != AV_NOPTS_VALUE)
538 467365 pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb);
539
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 467366 if (pkt->duration > 0)
540 448698 pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb);
541 467366 }
542
543 421626 int avpriv_packet_list_put(PacketList *packet_buffer,
544 AVPacket *pkt,
545 int (*copy)(AVPacket *dst, const AVPacket *src),
546 int flags)
547 {
548 421626 PacketListEntry *pktl = av_malloc(sizeof(*pktl));
549 int ret;
550
551
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 421626 if (!pktl)
552 ✗ return AVERROR(ENOMEM);
553
554
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 421626 if (copy) {
555 56 get_packet_defaults(&pktl->pkt);
556 56 ret = copy(&pktl->pkt, pkt);
557
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 56 if (ret < 0) {
558 ✗ av_free(pktl);
559 ✗ return ret;
560 }
561 } else {
562 421570 ret = av_packet_make_refcounted(pkt);
563
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 421570 if (ret < 0) {
564 ✗ av_free(pktl);
565 ✗ return ret;
566 }
567 421570 av_packet_move_ref(&pktl->pkt, pkt);
568 }
569
570 421626 pktl->next = NULL;
571
572
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 421626 if (packet_buffer->head)
573 255075 packet_buffer->tail->next = pktl;
574 else
575 166551 packet_buffer->head = pktl;
576
577 /* Add the packet in the buffered packet list. */
578 421626 packet_buffer->tail = pktl;
579 421626 return 0;
580 }
581
582 385757 int avpriv_packet_list_get(PacketList *pkt_buffer,
583 AVPacket *pkt)
584 {
585 385757 PacketListEntry *pktl = pkt_buffer->head;
586
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 385757 if (!pktl)
587 2 return AVERROR(EAGAIN);
588 385755 *pkt = pktl->pkt;
589 385755 pkt_buffer->head = pktl->next;
590
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 385755 if (!pkt_buffer->head)
591 162573 pkt_buffer->tail = NULL;
592 385755 av_freep(&pktl);
593 385755 return 0;
594 }
595
596 38701 void avpriv_packet_list_free(PacketList *pkt_buf)
597 {
598 38701 PacketListEntry *tmp = pkt_buf->head;
599
600
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 100666 while (tmp) {
601 61965 PacketListEntry *pktl = tmp;
602 61965 tmp = pktl->next;
603 61965 av_packet_unref(&pktl->pkt);
604 61965 av_freep(&pktl);
605 }
606 38701 pkt_buf->head = pkt_buf->tail = NULL;
607 38701 }
608
609 11330 int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
610 {
611 uint8_t *side_data;
612 size_t side_data_size;
613 int i;
614
615 11330 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS, &side_data_size);
616
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 11330 if (!side_data) {
617 11330 side_data_size = 4+4+8*error_count;
618 11330 side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
619 side_data_size);
620 }
621
622
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 11330 if (!side_data || side_data_size < 4+4+8*error_count)
623 ✗ return AVERROR(ENOMEM);
624
625 11330 AV_WL32(side_data , quality );
626 11330 side_data[4] = pict_type;
627 11330 side_data[5] = error_count;
628
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 11330 for (i = 0; i<error_count; i++)
629 ✗ AV_WL64(side_data+8 + 8*i , error[i]);
630
631 11330 return 0;
632 }
633
634 ✗ int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
635 {
636 AVProducerReferenceTime *prft;
637 uint8_t *side_data;
638 size_t side_data_size;
639
640 ✗ side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
641 ✗ if (!side_data) {
642 ✗ side_data_size = sizeof(AVProducerReferenceTime);
643 ✗ side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT, side_data_size);
644 }
645
646 ✗ if (!side_data || side_data_size < sizeof(AVProducerReferenceTime))
647 ✗ return AVERROR(ENOMEM);
648
649 ✗ prft = (AVProducerReferenceTime *)side_data;
650 ✗ prft->wallclock = timestamp;
651 ✗ prft->flags = 0;
652
653 ✗ return 0;
654 }
655
656 8351 const AVPacketSideData *av_packet_side_data_get(const AVPacketSideData *sd, int nb_sd,
657 enum AVPacketSideDataType type)
658 {
659
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 9023 for (int i = 0; i < nb_sd; i++)
660
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 741 if (sd[i].type == type)
661 69 return &sd[i];
662
663 8282 return NULL;
664 }
665
666 816 static AVPacketSideData *packet_side_data_add(AVPacketSideData **psd, int *pnb_sd,
667 enum AVPacketSideDataType type,
668 void *data, size_t size)
669 {
670 816 AVPacketSideData *sd = *psd, *tmp;
671 816 int nb_sd = *pnb_sd;
672
673
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 873 for (int i = 0; i < nb_sd; i++) {
674
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 58 if (sd[i].type != type)
675 57 continue;
676
677 1 av_free(sd[i].data);
678 1 sd[i].data = data;
679 1 sd[i].size = size;
680 1 return &sd[i];
681 }
682
683
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 815 if (nb_sd == INT_MAX)
684 ✗ return NULL;
685
686 815 tmp = av_realloc_array(sd, nb_sd + 1, sizeof(*tmp));
687
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 815 if (!tmp)
688 ✗ return NULL;
689
690 815 *psd = sd = tmp;
691 815 sd[nb_sd].type = type;
692 815 sd[nb_sd].data = data;
693 815 sd[nb_sd].size = size;
694 815 *pnb_sd = nb_sd + 1;
695
696 815 return &sd[nb_sd];
697 }
698
699 479 AVPacketSideData *av_packet_side_data_add(AVPacketSideData **psd, int *pnb_sd,
700 enum AVPacketSideDataType type,
701 void *data, size_t size, int flags)
702 {
703 479 return packet_side_data_add(psd, pnb_sd, type, data, size);
704 }
705
706 337 AVPacketSideData *av_packet_side_data_new(AVPacketSideData **psd, int *pnb_sd,
707 enum AVPacketSideDataType type,
708 size_t size, int flags)
709 {
710 337 AVPacketSideData *sd = NULL;
711 uint8_t *data;
712
713
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 337 if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
714 ✗ return NULL;
715
716 337 data = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
717
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 337 if (!data)
718 ✗ return NULL;
719 337 memset(data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
720
721 337 sd = packet_side_data_add(psd, pnb_sd, type, data, size);
722
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 337 if (!sd)
723 ✗ av_freep(&data);
724
725 337 return sd;
726 }
727
728 ✗ void av_packet_side_data_remove(AVPacketSideData *sd, int *pnb_sd,
729 enum AVPacketSideDataType type)
730 {
731 ✗ int nb_sd = *pnb_sd;
732
733 ✗ for (int i = nb_sd - 1; i >= 0; i--) {
734 ✗ if (sd[i].type != type)
735 ✗ continue;
736 ✗ av_free(sd[i].data);
737 ✗ sd[i] = sd[--nb_sd];
738 ✗ break;
739 }
740
741 ✗ *pnb_sd = nb_sd;
742 ✗ }
743
744 293131 void av_packet_side_data_free(AVPacketSideData **psd, int *pnb_sd)
745 {
746 293131 AVPacketSideData *sd = *psd;
747 293131 int nb_sd = *pnb_sd;
748
749
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 297721 for (int i = 0; i < nb_sd; i++)
750 4590 av_free(sd[i].data);
751
752 293131 av_freep(psd);
753 293131 *pnb_sd = 0;
754 293131 }
755