1 /*
2 * muxing functions for use within FFmpeg
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 "avformat.h"
23 #include "internal.h"
24 #include "libavcodec/internal.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/dict.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/timestamp.h"
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/internal.h"
32 #include "libavutil/mathematics.h"
33
34 /**
35 * @file
36 * muxing functions for use within libavformat
37 */
38
39 /* fraction handling */
40
41 /**
42 * f = val + (num / den) + 0.5.
43 *
44 * 'num' is normalized so that it is such as 0 <= num < den.
45 *
46 * @param f fractional number
47 * @param val integer value
48 * @param num must be >= 0
49 * @param den must be >= 1
50 */
frac_init(FFFrac * f,int64_t val,int64_t num,int64_t den)51 static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
52 {
53 num += (den >> 1);
54 if (num >= den) {
55 val += num / den;
56 num = num % den;
57 }
58 f->val = val;
59 f->num = num;
60 f->den = den;
61 }
62
63 /**
64 * Fractional addition to f: f = f + (incr / f->den).
65 *
66 * @param f fractional number
67 * @param incr increment, can be positive or negative
68 */
frac_add(FFFrac * f,int64_t incr)69 static void frac_add(FFFrac *f, int64_t incr)
70 {
71 int64_t num, den;
72
73 num = f->num + incr;
74 den = f->den;
75 if (num < 0) {
76 f->val += num / den;
77 num = num % den;
78 if (num < 0) {
79 num += den;
80 f->val--;
81 }
82 } else if (num >= den) {
83 f->val += num / den;
84 num = num % den;
85 }
86 f->num = num;
87 }
88
ff_choose_timebase(AVFormatContext * s,AVStream * st,int min_precision)89 AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
90 {
91 AVRational q;
92 int j;
93
94 q = st->time_base;
95
96 for (j=2; j<14; j+= 1+(j>2))
97 while (q.den / q.num < min_precision && q.num % j == 0)
98 q.num /= j;
99 while (q.den / q.num < min_precision && q.den < (1<<24))
100 q.den <<= 1;
101
102 return q;
103 }
104
ff_choose_chroma_location(AVFormatContext * s,AVStream * st)105 enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
106 {
107 AVCodecParameters *par = st->codecpar;
108 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(par->format);
109
110 if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED)
111 return par->chroma_location;
112
113 if (pix_desc) {
114 if (pix_desc->log2_chroma_h == 0) {
115 return AVCHROMA_LOC_TOPLEFT;
116 } else if (pix_desc->log2_chroma_w == 1 && pix_desc->log2_chroma_h == 1) {
117 if (par->field_order == AV_FIELD_UNKNOWN || par->field_order == AV_FIELD_PROGRESSIVE) {
118 switch (par->codec_id) {
119 case AV_CODEC_ID_MJPEG:
120 case AV_CODEC_ID_MPEG1VIDEO: return AVCHROMA_LOC_CENTER;
121 }
122 }
123 if (par->field_order == AV_FIELD_UNKNOWN || par->field_order != AV_FIELD_PROGRESSIVE) {
124 switch (par->codec_id) {
125 case AV_CODEC_ID_MPEG2VIDEO: return AVCHROMA_LOC_LEFT;
126 }
127 }
128 }
129 }
130
131 return AVCHROMA_LOC_UNSPECIFIED;
132
133 }
134
avformat_alloc_output_context2(AVFormatContext ** avctx,ff_const59 AVOutputFormat * oformat,const char * format,const char * filename)135 int avformat_alloc_output_context2(AVFormatContext **avctx, ff_const59 AVOutputFormat *oformat,
136 const char *format, const char *filename)
137 {
138 AVFormatContext *s = avformat_alloc_context();
139 int ret = 0;
140
141 *avctx = NULL;
142 if (!s)
143 goto nomem;
144
145 if (!oformat) {
146 if (format) {
147 oformat = av_guess_format(format, NULL, NULL);
148 if (!oformat) {
149 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
150 ret = AVERROR(EINVAL);
151 goto error;
152 }
153 } else {
154 oformat = av_guess_format(NULL, filename, NULL);
155 if (!oformat) {
156 ret = AVERROR(EINVAL);
157 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
158 filename);
159 goto error;
160 }
161 }
162 }
163
164 s->oformat = oformat;
165 if (s->oformat->priv_data_size > 0) {
166 s->priv_data = av_mallocz(s->oformat->priv_data_size);
167 if (!s->priv_data)
168 goto nomem;
169 if (s->oformat->priv_class) {
170 *(const AVClass**)s->priv_data= s->oformat->priv_class;
171 av_opt_set_defaults(s->priv_data);
172 }
173 } else
174 s->priv_data = NULL;
175
176 if (filename) {
177 #if FF_API_FORMAT_FILENAME
178 FF_DISABLE_DEPRECATION_WARNINGS
179 av_strlcpy(s->filename, filename, sizeof(s->filename));
180 FF_ENABLE_DEPRECATION_WARNINGS
181 #endif
182 if (!(s->url = av_strdup(filename)))
183 goto nomem;
184
185 }
186 *avctx = s;
187 return 0;
188 nomem:
189 av_log(s, AV_LOG_ERROR, "Out of memory\n");
190 ret = AVERROR(ENOMEM);
191 error:
192 avformat_free_context(s);
193 return ret;
194 }
195
validate_codec_tag(AVFormatContext * s,AVStream * st)196 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
197 {
198 const AVCodecTag *avctag;
199 int n;
200 enum AVCodecID id = AV_CODEC_ID_NONE;
201 int64_t tag = -1;
202
203 /**
204 * Check that tag + id is in the table
205 * If neither is in the table -> OK
206 * If tag is in the table with another id -> FAIL
207 * If id is in the table with another tag -> FAIL unless strict < normal
208 */
209 for (n = 0; s->oformat->codec_tag[n]; n++) {
210 avctag = s->oformat->codec_tag[n];
211 while (avctag->id != AV_CODEC_ID_NONE) {
212 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codecpar->codec_tag)) {
213 id = avctag->id;
214 if (id == st->codecpar->codec_id)
215 return 1;
216 }
217 if (avctag->id == st->codecpar->codec_id)
218 tag = avctag->tag;
219 avctag++;
220 }
221 }
222 if (id != AV_CODEC_ID_NONE)
223 return 0;
224 if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
225 return 0;
226 return 1;
227 }
228
229
init_muxer(AVFormatContext * s,AVDictionary ** options)230 static int init_muxer(AVFormatContext *s, AVDictionary **options)
231 {
232 int ret = 0, i;
233 AVStream *st;
234 AVDictionary *tmp = NULL;
235 AVCodecParameters *par = NULL;
236 const AVOutputFormat *of = s->oformat;
237 const AVCodecDescriptor *desc;
238 AVDictionaryEntry *e;
239
240 if (options)
241 av_dict_copy(&tmp, *options, 0);
242
243 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
244 goto fail;
245 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
246 (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
247 goto fail;
248
249 #if FF_API_FORMAT_FILENAME
250 FF_DISABLE_DEPRECATION_WARNINGS
251 if (!s->url && !(s->url = av_strdup(s->filename))) {
252 FF_ENABLE_DEPRECATION_WARNINGS
253 #else
254 if (!s->url && !(s->url = av_strdup(""))) {
255 #endif
256 ret = AVERROR(ENOMEM);
257 goto fail;
258 }
259
260 #if FF_API_LAVF_AVCTX
261 FF_DISABLE_DEPRECATION_WARNINGS
262 if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) {
263 if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
264 av_log(s, AV_LOG_WARNING,
265 "The AVFormatContext is not in set to bitexact mode, only "
266 "the AVCodecContext. If this is not intended, set "
267 "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
268 }
269 }
270 FF_ENABLE_DEPRECATION_WARNINGS
271 #endif
272
273 // some sanity checks
274 if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
275 av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
276 ret = AVERROR(EINVAL);
277 goto fail;
278 }
279
280 for (i = 0; i < s->nb_streams; i++) {
281 st = s->streams[i];
282 par = st->codecpar;
283
284 #if FF_API_LAVF_AVCTX
285 FF_DISABLE_DEPRECATION_WARNINGS
286 if (st->codecpar->codec_type == AVMEDIA_TYPE_UNKNOWN &&
287 st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN) {
288 av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
289 "parameters to muxers is deprecated, use AVStream.codecpar "
290 "instead.\n");
291 ret = avcodec_parameters_from_context(st->codecpar, st->codec);
292 if (ret < 0)
293 goto fail;
294 }
295 FF_ENABLE_DEPRECATION_WARNINGS
296 #endif
297
298 if (!st->time_base.num) {
299 /* fall back on the default timebase values */
300 if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
301 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
302 else
303 avpriv_set_pts_info(st, 33, 1, 90000);
304 }
305
306 switch (par->codec_type) {
307 case AVMEDIA_TYPE_AUDIO:
308 if (par->sample_rate <= 0) {
309 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
310 ret = AVERROR(EINVAL);
311 goto fail;
312 }
313 if (!par->block_align)
314 par->block_align = par->channels *
315 av_get_bits_per_sample(par->codec_id) >> 3;
316 break;
317 case AVMEDIA_TYPE_VIDEO:
318 if ((par->width <= 0 || par->height <= 0) &&
319 !(of->flags & AVFMT_NODIMENSIONS)) {
320 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
321 ret = AVERROR(EINVAL);
322 goto fail;
323 }
324 if (av_cmp_q(st->sample_aspect_ratio, par->sample_aspect_ratio)
325 && fabs(av_q2d(st->sample_aspect_ratio) - av_q2d(par->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
326 ) {
327 if (st->sample_aspect_ratio.num != 0 &&
328 st->sample_aspect_ratio.den != 0 &&
329 par->sample_aspect_ratio.num != 0 &&
330 par->sample_aspect_ratio.den != 0) {
331 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
332 "(%d/%d) and encoder layer (%d/%d)\n",
333 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
334 par->sample_aspect_ratio.num,
335 par->sample_aspect_ratio.den);
336 ret = AVERROR(EINVAL);
337 goto fail;
338 }
339 }
340 break;
341 }
342
343 desc = avcodec_descriptor_get(par->codec_id);
344 if (desc && desc->props & AV_CODEC_PROP_REORDER)
345 st->internal->reorder = 1;
346
347 st->internal->is_intra_only = ff_is_intra_only(par->codec_id);
348
349 if (of->codec_tag) {
350 if ( par->codec_tag
351 && par->codec_id == AV_CODEC_ID_RAWVIDEO
352 && ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0
353 || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
354 && !validate_codec_tag(s, st)) {
355 // the current rawvideo encoding system ends up setting
356 // the wrong codec_tag for avi/mov, we override it here
357 par->codec_tag = 0;
358 }
359 if (par->codec_tag) {
360 if (!validate_codec_tag(s, st)) {
361 const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
362 av_log(s, AV_LOG_ERROR,
363 "Tag %s incompatible with output codec id '%d' (%s)\n",
364 av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
365 ret = AVERROR_INVALIDDATA;
366 goto fail;
367 }
368 } else
369 par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
370 }
371
372 if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT)
373 s->internal->nb_interleaved_streams++;
374 }
375
376 if (!s->priv_data && of->priv_data_size > 0) {
377 s->priv_data = av_mallocz(of->priv_data_size);
378 if (!s->priv_data) {
379 ret = AVERROR(ENOMEM);
380 goto fail;
381 }
382 if (of->priv_class) {
383 *(const AVClass **)s->priv_data = of->priv_class;
384 av_opt_set_defaults(s->priv_data);
385 if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
386 goto fail;
387 }
388 }
389
390 /* set muxer identification string */
391 if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
392 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
393 } else {
394 av_dict_set(&s->metadata, "encoder", NULL, 0);
395 }
396
397 for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
398 av_dict_set(&s->metadata, e->key, NULL, 0);
399 }
400
401 if (options) {
402 av_dict_free(options);
403 *options = tmp;
404 }
405
406 if (s->oformat->init) {
407 if ((ret = s->oformat->init(s)) < 0) {
408 if (s->oformat->deinit)
409 s->oformat->deinit(s);
410 return ret;
411 }
412 return ret == 0;
413 }
414
415 return 0;
416
417 fail:
418 av_dict_free(&tmp);
419 return ret;
420 }
421
422 static int init_pts(AVFormatContext *s)
423 {
424 int i;
425 AVStream *st;
426
427 /* init PTS generation */
428 for (i = 0; i < s->nb_streams; i++) {
429 int64_t den = AV_NOPTS_VALUE;
430 st = s->streams[i];
431
432 switch (st->codecpar->codec_type) {
433 case AVMEDIA_TYPE_AUDIO:
434 den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
435 break;
436 case AVMEDIA_TYPE_VIDEO:
437 den = (int64_t)st->time_base.num * st->time_base.den;
438 break;
439 default:
440 break;
441 }
442
443 if (!st->internal->priv_pts)
444 st->internal->priv_pts = av_mallocz(sizeof(*st->internal->priv_pts));
445 if (!st->internal->priv_pts)
446 return AVERROR(ENOMEM);
447
448 if (den != AV_NOPTS_VALUE) {
449 if (den <= 0)
450 return AVERROR_INVALIDDATA;
451
452 frac_init(st->internal->priv_pts, 0, 0, den);
453 }
454 }
455
456 if (s->avoid_negative_ts < 0) {
457 av_assert2(s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO);
458 if (s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS)) {
459 s->avoid_negative_ts = 0;
460 } else
461 s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE;
462 }
463
464 return 0;
465 }
466
467 static void flush_if_needed(AVFormatContext *s)
468 {
469 if (s->pb && s->pb->error >= 0) {
470 if (s->flush_packets == 1 || s->flags & AVFMT_FLAG_FLUSH_PACKETS)
471 avio_flush(s->pb);
472 else if (s->flush_packets && !(s->oformat->flags & AVFMT_NOFILE))
473 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
474 }
475 }
476
477 static void deinit_muxer(AVFormatContext *s)
478 {
479 if (s->oformat && s->oformat->deinit && s->internal->initialized)
480 s->oformat->deinit(s);
481 s->internal->initialized =
482 s->internal->streams_initialized = 0;
483 }
484
485 int avformat_init_output(AVFormatContext *s, AVDictionary **options)
486 {
487 int ret = 0;
488
489 if ((ret = init_muxer(s, options)) < 0)
490 return ret;
491
492 s->internal->initialized = 1;
493 s->internal->streams_initialized = ret;
494
495 if (s->oformat->init && ret) {
496 if ((ret = init_pts(s)) < 0)
497 return ret;
498
499 return AVSTREAM_INIT_IN_INIT_OUTPUT;
500 }
501
502 return AVSTREAM_INIT_IN_WRITE_HEADER;
503 }
504
505 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
506 {
507 int ret = 0;
508 int already_initialized = s->internal->initialized;
509 int streams_already_initialized = s->internal->streams_initialized;
510
511 if (!already_initialized)
512 if ((ret = avformat_init_output(s, options)) < 0)
513 return ret;
514
515 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
516 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
517 if (s->oformat->write_header) {
518 ret = s->oformat->write_header(s);
519 if (ret >= 0 && s->pb && s->pb->error < 0)
520 ret = s->pb->error;
521 if (ret < 0)
522 goto fail;
523 flush_if_needed(s);
524 }
525 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
526 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_UNKNOWN);
527
528 if (!s->internal->streams_initialized) {
529 if ((ret = init_pts(s)) < 0)
530 goto fail;
531 }
532
533 return streams_already_initialized;
534
535 fail:
536 deinit_muxer(s);
537 return ret;
538 }
539
540 #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
541
542
543 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
544 FF_DISABLE_DEPRECATION_WARNINGS
545 //FIXME merge with compute_pkt_fields
546 static int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
547 {
548 int delay = FFMAX(st->codecpar->video_delay, st->internal->avctx->max_b_frames > 0);
549 int num, den, i;
550 int frame_size;
551
552 if (!s->internal->missing_ts_warning &&
553 !(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
554 (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC) || (st->disposition & AV_DISPOSITION_TIMED_THUMBNAILS)) &&
555 (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
556 av_log(s, AV_LOG_WARNING,
557 "Timestamps are unset in a packet for stream %d. "
558 "This is deprecated and will stop working in the future. "
559 "Fix your code to set the timestamps properly\n", st->index);
560 s->internal->missing_ts_warning = 1;
561 }
562
563 if (s->debug & FF_FDEBUG_TS)
564 av_log(s, AV_LOG_DEBUG, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
565 av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
566
567 if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
568 av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
569 pkt->duration, pkt->stream_index);
570 pkt->duration = 0;
571 }
572
573 /* duration field */
574 if (pkt->duration == 0) {
575 ff_compute_frame_duration(s, &num, &den, st, NULL, pkt);
576 if (den && num) {
577 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
578 }
579 }
580
581 if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
582 pkt->pts = pkt->dts;
583
584 //XXX/FIXME this is a temporary hack until all encoders output pts
585 if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
586 static int warned;
587 if (!warned) {
588 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
589 warned = 1;
590 }
591 pkt->dts =
592 // pkt->pts= st->cur_dts;
593 pkt->pts = st->internal->priv_pts->val;
594 }
595
596 //calculate dts from pts
597 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
598 st->pts_buffer[0] = pkt->pts;
599 for (i = 1; i < delay + 1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
600 st->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
601 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
602 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
603
604 pkt->dts = st->pts_buffer[0];
605 }
606
607 if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
608 ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
609 st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE &&
610 st->codecpar->codec_type != AVMEDIA_TYPE_DATA &&
611 st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
612 av_log(s, AV_LOG_ERROR,
613 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
614 st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
615 return AVERROR(EINVAL);
616 }
617 if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
618 av_log(s, AV_LOG_ERROR,
619 "pts (%s) < dts (%s) in stream %d\n",
620 av_ts2str(pkt->pts), av_ts2str(pkt->dts),
621 st->index);
622 return AVERROR(EINVAL);
623 }
624
625 if (s->debug & FF_FDEBUG_TS)
626 av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n",
627 av_ts2str(pkt->pts), av_ts2str(pkt->dts));
628
629 st->cur_dts = pkt->dts;
630 st->internal->priv_pts->val = pkt->dts;
631
632 /* update pts */
633 switch (st->codecpar->codec_type) {
634 case AVMEDIA_TYPE_AUDIO:
635 frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ?
636 (*(AVFrame **)pkt->data)->nb_samples :
637 av_get_audio_frame_duration(st->codec, pkt->size);
638
639 /* HACK/FIXME, we skip the initial 0 size packets as they are most
640 * likely equal to the encoder delay, but it would be better if we
641 * had the real timestamps from the encoder */
642 if (frame_size >= 0 && (pkt->size || st->internal->priv_pts->num != st->internal->priv_pts->den >> 1 || st->internal->priv_pts->val)) {
643 frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * frame_size);
644 }
645 break;
646 case AVMEDIA_TYPE_VIDEO:
647 frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * st->time_base.num);
648 break;
649 }
650 return 0;
651 }
652 FF_ENABLE_DEPRECATION_WARNINGS
653 #endif
654
655 /**
656 * Shift timestamps and call muxer; the original pts/dts are not kept.
657 *
658 * FIXME: this function should NEVER get undefined pts/dts beside when the
659 * AVFMT_NOTIMESTAMPS is set.
660 * Those additional safety checks should be dropped once the correct checks
661 * are set in the callers.
662 */
663 static int write_packet(AVFormatContext *s, AVPacket *pkt)
664 {
665 int ret;
666
667 // If the timestamp offsetting below is adjusted, adjust
668 // ff_interleaved_peek similarly.
669 if (s->output_ts_offset) {
670 AVStream *st = s->streams[pkt->stream_index];
671 int64_t offset = av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
672
673 if (pkt->dts != AV_NOPTS_VALUE)
674 pkt->dts += offset;
675 if (pkt->pts != AV_NOPTS_VALUE)
676 pkt->pts += offset;
677 }
678
679 if (s->avoid_negative_ts > 0) {
680 AVStream *st = s->streams[pkt->stream_index];
681 int64_t offset = st->mux_ts_offset;
682 int64_t ts = s->internal->avoid_negative_ts_use_pts ? pkt->pts : pkt->dts;
683
684 if (s->internal->offset == AV_NOPTS_VALUE && ts != AV_NOPTS_VALUE &&
685 (ts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
686 s->internal->offset = -ts;
687 s->internal->offset_timebase = st->time_base;
688 }
689
690 if (s->internal->offset != AV_NOPTS_VALUE && !offset) {
691 offset = st->mux_ts_offset =
692 av_rescale_q_rnd(s->internal->offset,
693 s->internal->offset_timebase,
694 st->time_base,
695 AV_ROUND_UP);
696 }
697
698 if (pkt->dts != AV_NOPTS_VALUE)
699 pkt->dts += offset;
700 if (pkt->pts != AV_NOPTS_VALUE)
701 pkt->pts += offset;
702
703 if (s->internal->avoid_negative_ts_use_pts) {
704 if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < 0) {
705 av_log(s, AV_LOG_WARNING, "failed to avoid negative "
706 "pts %s in stream %d.\n"
707 "Try -avoid_negative_ts 1 as a possible workaround.\n",
708 av_ts2str(pkt->pts),
709 pkt->stream_index
710 );
711 }
712 } else {
713 av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0 || s->max_interleave_delta > 0);
714 if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < 0) {
715 av_log(s, AV_LOG_WARNING,
716 "Packets poorly interleaved, failed to avoid negative "
717 "timestamp %s in stream %d.\n"
718 "Try -max_interleave_delta 0 as a possible workaround.\n",
719 av_ts2str(pkt->dts),
720 pkt->stream_index
721 );
722 }
723 }
724 }
725
726 if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
727 AVFrame **frame = (AVFrame **)pkt->data;
728 av_assert0(pkt->size == sizeof(*frame));
729 ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, frame, 0);
730 } else {
731 ret = s->oformat->write_packet(s, pkt);
732 }
733
734 if (s->pb && ret >= 0) {
735 flush_if_needed(s);
736 if (s->pb->error < 0)
737 ret = s->pb->error;
738 }
739
740 if (ret >= 0)
741 s->streams[pkt->stream_index]->nb_frames++;
742
743 return ret;
744 }
745
746 static int check_packet(AVFormatContext *s, AVPacket *pkt)
747 {
748 if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
749 av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
750 pkt->stream_index);
751 return AVERROR(EINVAL);
752 }
753
754 if (s->streams[pkt->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
755 av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
756 return AVERROR(EINVAL);
757 }
758
759 return 0;
760 }
761
762 static int prepare_input_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
763 {
764 #if !FF_API_COMPUTE_PKT_FIELDS2 || !FF_API_LAVF_AVCTX
765 /* sanitize the timestamps */
766 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
767
768 /* when there is no reordering (so dts is equal to pts), but
769 * only one of them is set, set the other as well */
770 if (!st->internal->reorder) {
771 if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
772 pkt->pts = pkt->dts;
773 if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
774 pkt->dts = pkt->pts;
775 }
776
777 /* check that the timestamps are set */
778 if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
779 av_log(s, AV_LOG_ERROR,
780 "Timestamps are unset in a packet for stream %d\n", st->index);
781 return AVERROR(EINVAL);
782 }
783
784 /* check that the dts are increasing (or at least non-decreasing,
785 * if the format allows it */
786 if (st->cur_dts != AV_NOPTS_VALUE &&
787 ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) ||
788 st->cur_dts > pkt->dts)) {
789 av_log(s, AV_LOG_ERROR,
790 "Application provided invalid, non monotonically increasing "
791 "dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
792 st->index, st->cur_dts, pkt->dts);
793 return AVERROR(EINVAL);
794 }
795
796 if (pkt->pts < pkt->dts) {
797 av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
798 pkt->pts, pkt->dts, st->index);
799 return AVERROR(EINVAL);
800 }
801 }
802 #endif
803 /* update flags */
804 if (st->internal->is_intra_only)
805 pkt->flags |= AV_PKT_FLAG_KEY;
806
807 return 0;
808 }
809
810 #define CHUNK_START 0x1000
811
812 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
813 int (*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
814 {
815 int ret;
816 AVPacketList **next_point, *this_pktl;
817 AVStream *st = s->streams[pkt->stream_index];
818 int chunked = s->max_chunk_size || s->max_chunk_duration;
819
820 this_pktl = av_malloc(sizeof(AVPacketList));
821 if (!this_pktl) {
822 av_packet_unref(pkt);
823 return AVERROR(ENOMEM);
824 }
825 if ((ret = av_packet_make_refcounted(pkt)) < 0) {
826 av_free(this_pktl);
827 av_packet_unref(pkt);
828 return ret;
829 }
830
831 av_packet_move_ref(&this_pktl->pkt, pkt);
832 pkt = &this_pktl->pkt;
833
834 if (st->last_in_packet_buffer) {
835 next_point = &(st->last_in_packet_buffer->next);
836 } else {
837 next_point = &s->internal->packet_buffer;
838 }
839
840 if (chunked) {
841 uint64_t max= av_rescale_q_rnd(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base, AV_ROUND_UP);
842 st->interleaver_chunk_size += pkt->size;
843 st->interleaver_chunk_duration += pkt->duration;
844 if ( (s->max_chunk_size && st->interleaver_chunk_size > s->max_chunk_size)
845 || (max && st->interleaver_chunk_duration > max)) {
846 st->interleaver_chunk_size = 0;
847 pkt->flags |= CHUNK_START;
848 if (max && st->interleaver_chunk_duration > max) {
849 int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
850 int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
851
852 st->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
853 } else
854 st->interleaver_chunk_duration = 0;
855 }
856 }
857 if (*next_point) {
858 if (chunked && !(pkt->flags & CHUNK_START))
859 goto next_non_null;
860
861 if (compare(s, &s->internal->packet_buffer_end->pkt, pkt)) {
862 while ( *next_point
863 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
864 || !compare(s, &(*next_point)->pkt, pkt)))
865 next_point = &(*next_point)->next;
866 if (*next_point)
867 goto next_non_null;
868 } else {
869 next_point = &(s->internal->packet_buffer_end->next);
870 }
871 }
872 av_assert1(!*next_point);
873
874 s->internal->packet_buffer_end = this_pktl;
875 next_non_null:
876
877 this_pktl->next = *next_point;
878
879 st->last_in_packet_buffer = *next_point = this_pktl;
880
881 return 0;
882 }
883
884 static int interleave_compare_dts(AVFormatContext *s, const AVPacket *next,
885 const AVPacket *pkt)
886 {
887 AVStream *st = s->streams[pkt->stream_index];
888 AVStream *st2 = s->streams[next->stream_index];
889 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
890 st->time_base);
891 if (s->audio_preload) {
892 int preload = st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
893 int preload2 = st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
894 if (preload != preload2) {
895 int64_t ts, ts2;
896 preload *= s->audio_preload;
897 preload2 *= s->audio_preload;
898 ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - preload;
899 ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - preload2;
900 if (ts == ts2) {
901 ts = ((uint64_t)pkt ->dts*st ->time_base.num*AV_TIME_BASE - (uint64_t)preload *st ->time_base.den)*st2->time_base.den
902 - ((uint64_t)next->dts*st2->time_base.num*AV_TIME_BASE - (uint64_t)preload2*st2->time_base.den)*st ->time_base.den;
903 ts2 = 0;
904 }
905 comp = (ts2 > ts) - (ts2 < ts);
906 }
907 }
908
909 if (comp == 0)
910 return pkt->stream_index < next->stream_index;
911 return comp > 0;
912 }
913
914 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
915 AVPacket *pkt, int flush)
916 {
917 AVPacketList *pktl;
918 int stream_count = 0;
919 int noninterleaved_count = 0;
920 int i, ret;
921 int eof = flush;
922
923 if (pkt) {
924 if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
925 return ret;
926 }
927
928 for (i = 0; i < s->nb_streams; i++) {
929 if (s->streams[i]->last_in_packet_buffer) {
930 ++stream_count;
931 } else if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
932 s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP8 &&
933 s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP9) {
934 ++noninterleaved_count;
935 }
936 }
937
938 if (s->internal->nb_interleaved_streams == stream_count)
939 flush = 1;
940
941 if (s->max_interleave_delta > 0 &&
942 s->internal->packet_buffer &&
943 !flush &&
944 s->internal->nb_interleaved_streams == stream_count+noninterleaved_count
945 ) {
946 AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
947 int64_t delta_dts = INT64_MIN;
948 int64_t top_dts = av_rescale_q(top_pkt->dts,
949 s->streams[top_pkt->stream_index]->time_base,
950 AV_TIME_BASE_Q);
951
952 for (i = 0; i < s->nb_streams; i++) {
953 int64_t last_dts;
954 const AVPacketList *last = s->streams[i]->last_in_packet_buffer;
955
956 if (!last)
957 continue;
958
959 last_dts = av_rescale_q(last->pkt.dts,
960 s->streams[i]->time_base,
961 AV_TIME_BASE_Q);
962 delta_dts = FFMAX(delta_dts, last_dts - top_dts);
963 }
964
965 if (delta_dts > s->max_interleave_delta) {
966 av_log(s, AV_LOG_DEBUG,
967 "Delay between the first packet and last packet in the "
968 "muxing queue is %"PRId64" > %"PRId64": forcing output\n",
969 delta_dts, s->max_interleave_delta);
970 flush = 1;
971 }
972 }
973
974 if (s->internal->packet_buffer &&
975 eof &&
976 (s->flags & AVFMT_FLAG_SHORTEST) &&
977 s->internal->shortest_end == AV_NOPTS_VALUE) {
978 AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
979
980 s->internal->shortest_end = av_rescale_q(top_pkt->dts,
981 s->streams[top_pkt->stream_index]->time_base,
982 AV_TIME_BASE_Q);
983 }
984
985 if (s->internal->shortest_end != AV_NOPTS_VALUE) {
986 while (s->internal->packet_buffer) {
987 AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
988 AVStream *st;
989 int64_t top_dts = av_rescale_q(top_pkt->dts,
990 s->streams[top_pkt->stream_index]->time_base,
991 AV_TIME_BASE_Q);
992
993 if (s->internal->shortest_end + 1 >= top_dts)
994 break;
995
996 pktl = s->internal->packet_buffer;
997 st = s->streams[pktl->pkt.stream_index];
998
999 s->internal->packet_buffer = pktl->next;
1000 if (!s->internal->packet_buffer)
1001 s->internal->packet_buffer_end = NULL;
1002
1003 if (st->last_in_packet_buffer == pktl)
1004 st->last_in_packet_buffer = NULL;
1005
1006 av_packet_unref(&pktl->pkt);
1007 av_freep(&pktl);
1008 flush = 0;
1009 }
1010 }
1011
1012 if (stream_count && flush) {
1013 AVStream *st;
1014 pktl = s->internal->packet_buffer;
1015 *out = pktl->pkt;
1016 st = s->streams[out->stream_index];
1017
1018 s->internal->packet_buffer = pktl->next;
1019 if (!s->internal->packet_buffer)
1020 s->internal->packet_buffer_end = NULL;
1021
1022 if (st->last_in_packet_buffer == pktl)
1023 st->last_in_packet_buffer = NULL;
1024 av_freep(&pktl);
1025
1026 return 1;
1027 } else {
1028 return 0;
1029 }
1030 }
1031
1032 int ff_interleaved_peek(AVFormatContext *s, int stream,
1033 AVPacket *pkt, int add_offset)
1034 {
1035 AVPacketList *pktl = s->internal->packet_buffer;
1036 while (pktl) {
1037 if (pktl->pkt.stream_index == stream) {
1038 *pkt = pktl->pkt;
1039 if (add_offset) {
1040 AVStream *st = s->streams[pkt->stream_index];
1041 int64_t offset = st->mux_ts_offset;
1042
1043 if (s->output_ts_offset)
1044 offset += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
1045
1046 if (pkt->dts != AV_NOPTS_VALUE)
1047 pkt->dts += offset;
1048 if (pkt->pts != AV_NOPTS_VALUE)
1049 pkt->pts += offset;
1050 }
1051 return 0;
1052 }
1053 pktl = pktl->next;
1054 }
1055 return AVERROR(ENOENT);
1056 }
1057
1058 /**
1059 * Interleave an AVPacket correctly so it can be muxed.
1060 * @param out the interleaved packet will be output here
1061 * @param in the input packet; will always be blank on return if not NULL
1062 * @param flush 1 if no further packets are available as input and all
1063 * remaining packets should be output
1064 * @return 1 if a packet was output, 0 if no packet could be output,
1065 * < 0 if an error occurred
1066 */
1067 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
1068 {
1069 if (s->oformat->interleave_packet) {
1070 return s->oformat->interleave_packet(s, out, in, flush);
1071 } else
1072 return ff_interleave_packet_per_dts(s, out, in, flush);
1073 }
1074
1075 static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1076 {
1077 int ret;
1078
1079 if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
1080 return 1;
1081
1082 if (s->oformat->check_bitstream) {
1083 if (!st->internal->bitstream_checked) {
1084 if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
1085 return ret;
1086 else if (ret == 1)
1087 st->internal->bitstream_checked = 1;
1088 }
1089 }
1090
1091 return 1;
1092 }
1093
1094 static int interleaved_write_packet(AVFormatContext *s, AVPacket *pkt, int flush)
1095 {
1096 for (;; ) {
1097 AVPacket opkt;
1098 int ret = interleave_packet(s, &opkt, pkt, flush);
1099 if (ret <= 0)
1100 return ret;
1101
1102 pkt = NULL;
1103
1104 ret = write_packet(s, &opkt);
1105
1106 av_packet_unref(&opkt);
1107
1108 if (ret < 0)
1109 return ret;
1110 }
1111 }
1112
1113 static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1114 {
1115 int ret;
1116
1117 if (s->debug & FF_FDEBUG_TS)
1118 av_log(s, AV_LOG_DEBUG, "%s size:%d dts:%s pts:%s\n", __FUNCTION__,
1119 pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
1120
1121 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
1122 if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1123 return ret;
1124 #endif
1125
1126 if (interleaved) {
1127 if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1128 return AVERROR(EINVAL);
1129 return interleaved_write_packet(s, pkt, 0);
1130 } else {
1131 return write_packet(s, pkt);
1132 }
1133 }
1134
1135 static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1136 {
1137 AVBSFContext *bsfc = st->internal->bsfc;
1138 int ret;
1139
1140 if ((ret = av_bsf_send_packet(bsfc, pkt)) < 0) {
1141 av_log(s, AV_LOG_ERROR,
1142 "Failed to send packet to filter %s for stream %d\n",
1143 bsfc->filter->name, st->index);
1144 return ret;
1145 }
1146
1147 do {
1148 ret = av_bsf_receive_packet(bsfc, pkt);
1149 if (ret < 0) {
1150 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
1151 return 0;
1152 av_log(s, AV_LOG_ERROR, "Error applying bitstream filters to an output "
1153 "packet for stream #%d: %s\n", st->index, av_err2str(ret));
1154 if (!(s->error_recognition & AV_EF_EXPLODE) && ret != AVERROR(ENOMEM))
1155 continue;
1156 return ret;
1157 }
1158 av_packet_rescale_ts(pkt, bsfc->time_base_out, st->time_base);
1159 ret = write_packet_common(s, st, pkt, interleaved);
1160 if (ret >= 0 && !interleaved) // a successful write_packet_common already unrefed pkt for interleaved
1161 av_packet_unref(pkt);
1162 } while (ret >= 0);
1163
1164 return ret;
1165 }
1166
1167 static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
1168 {
1169 AVStream *st;
1170 int ret = check_packet(s, pkt);
1171 if (ret < 0)
1172 return ret;
1173 st = s->streams[pkt->stream_index];
1174
1175 ret = prepare_input_packet(s, st, pkt);
1176 if (ret < 0)
1177 return ret;
1178
1179 ret = check_bitstream(s, st, pkt);
1180 if (ret < 0)
1181 return ret;
1182
1183 if (st->internal->bsfc) {
1184 return write_packets_from_bsfs(s, st, pkt, interleaved);
1185 } else {
1186 return write_packet_common(s, st, pkt, interleaved);
1187 }
1188 }
1189
1190 int av_write_frame(AVFormatContext *s, AVPacket *in)
1191 {
1192 AVPacket local_pkt, *pkt = &local_pkt;
1193 int ret;
1194
1195 if (!in) {
1196 if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
1197 ret = s->oformat->write_packet(s, NULL);
1198 flush_if_needed(s);
1199 if (ret >= 0 && s->pb && s->pb->error < 0)
1200 ret = s->pb->error;
1201 return ret;
1202 }
1203 return 1;
1204 }
1205
1206 if (in->flags & AV_PKT_FLAG_UNCODED_FRAME) {
1207 pkt = in;
1208 } else {
1209 /* We don't own in, so we have to make sure not to modify it.
1210 * The following avoids copying in's data unnecessarily.
1211 * Copying side data is unavoidable as a bitstream filter
1212 * may change it, e.g. free it on errors. */
1213 pkt->buf = NULL;
1214 pkt->data = in->data;
1215 pkt->size = in->size;
1216 ret = av_packet_copy_props(pkt, in);
1217 if (ret < 0)
1218 return ret;
1219 if (in->buf) {
1220 pkt->buf = av_buffer_ref(in->buf);
1221 if (!pkt->buf) {
1222 ret = AVERROR(ENOMEM);
1223 goto fail;
1224 }
1225 }
1226 }
1227
1228 ret = write_packets_common(s, pkt, 0/*non-interleaved*/);
1229
1230 fail:
1231 // Uncoded frames using the noninterleaved codepath are also freed here
1232 av_packet_unref(pkt);
1233 return ret;
1234 }
1235
1236 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
1237 {
1238 int ret;
1239
1240 if (pkt) {
1241 ret = write_packets_common(s, pkt, 1/*interleaved*/);
1242 if (ret < 0)
1243 av_packet_unref(pkt);
1244 return ret;
1245 } else {
1246 av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
1247 return interleaved_write_packet(s, NULL, 1/*flush*/);
1248 }
1249 }
1250
1251 int av_write_trailer(AVFormatContext *s)
1252 {
1253 int i, ret1, ret = 0;
1254 AVPacket pkt = {0};
1255 av_init_packet(&pkt);
1256
1257 for (i = 0; i < s->nb_streams; i++) {
1258 if (s->streams[i]->internal->bsfc) {
1259 ret1 = write_packets_from_bsfs(s, s->streams[i], &pkt, 1/*interleaved*/);
1260 if (ret1 < 0)
1261 av_packet_unref(&pkt);
1262 if (ret >= 0)
1263 ret = ret1;
1264 }
1265 }
1266 ret1 = interleaved_write_packet(s, NULL, 1);
1267 if (ret >= 0)
1268 ret = ret1;
1269
1270 if (s->oformat->write_trailer) {
1271 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1272 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
1273 if (ret >= 0) {
1274 ret = s->oformat->write_trailer(s);
1275 } else {
1276 s->oformat->write_trailer(s);
1277 }
1278 }
1279
1280 deinit_muxer(s);
1281
1282 if (s->pb)
1283 avio_flush(s->pb);
1284 if (ret == 0)
1285 ret = s->pb ? s->pb->error : 0;
1286 for (i = 0; i < s->nb_streams; i++) {
1287 av_freep(&s->streams[i]->priv_data);
1288 av_freep(&s->streams[i]->index_entries);
1289 }
1290 if (s->oformat->priv_class)
1291 av_opt_free(s->priv_data);
1292 av_freep(&s->priv_data);
1293 return ret;
1294 }
1295
1296 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
1297 int64_t *dts, int64_t *wall)
1298 {
1299 if (!s->oformat || !s->oformat->get_output_timestamp)
1300 return AVERROR(ENOSYS);
1301 s->oformat->get_output_timestamp(s, stream, dts, wall);
1302 return 0;
1303 }
1304
1305 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
1306 AVFormatContext *src, int interleave)
1307 {
1308 AVPacket local_pkt;
1309 int ret;
1310
1311 local_pkt = *pkt;
1312 local_pkt.stream_index = dst_stream;
1313
1314 av_packet_rescale_ts(&local_pkt,
1315 src->streams[pkt->stream_index]->time_base,
1316 dst->streams[dst_stream]->time_base);
1317
1318 if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt);
1319 else ret = av_write_frame(dst, &local_pkt);
1320 pkt->buf = local_pkt.buf;
1321 pkt->side_data = local_pkt.side_data;
1322 pkt->side_data_elems = local_pkt.side_data_elems;
1323 return ret;
1324 }
1325
1326 static void uncoded_frame_free(void *unused, uint8_t *data)
1327 {
1328 av_frame_free((AVFrame **)data);
1329 av_free(data);
1330 }
1331
1332 static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
1333 AVFrame *frame, int interleaved)
1334 {
1335 AVPacket pkt, *pktp;
1336
1337 av_assert0(s->oformat);
1338 if (!s->oformat->write_uncoded_frame) {
1339 av_frame_free(&frame);
1340 return AVERROR(ENOSYS);
1341 }
1342
1343 if (!frame) {
1344 pktp = NULL;
1345 } else {
1346 size_t bufsize = sizeof(frame) + AV_INPUT_BUFFER_PADDING_SIZE;
1347 AVFrame **framep = av_mallocz(bufsize);
1348
1349 if (!framep)
1350 goto fail;
1351 pktp = &pkt;
1352 av_init_packet(&pkt);
1353 pkt.buf = av_buffer_create((void *)framep, bufsize,
1354 uncoded_frame_free, NULL, 0);
1355 if (!pkt.buf) {
1356 av_free(framep);
1357 fail:
1358 av_frame_free(&frame);
1359 return AVERROR(ENOMEM);
1360 }
1361 *framep = frame;
1362
1363 pkt.data = (void *)framep;
1364 pkt.size = sizeof(frame);
1365 pkt.pts =
1366 pkt.dts = frame->pts;
1367 pkt.duration = frame->pkt_duration;
1368 pkt.stream_index = stream_index;
1369 pkt.flags |= AV_PKT_FLAG_UNCODED_FRAME;
1370 }
1371
1372 return interleaved ? av_interleaved_write_frame(s, pktp) :
1373 av_write_frame(s, pktp);
1374 }
1375
1376 int av_write_uncoded_frame(AVFormatContext *s, int stream_index,
1377 AVFrame *frame)
1378 {
1379 return write_uncoded_frame_internal(s, stream_index, frame, 0);
1380 }
1381
1382 int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index,
1383 AVFrame *frame)
1384 {
1385 return write_uncoded_frame_internal(s, stream_index, frame, 1);
1386 }
1387
1388 int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
1389 {
1390 av_assert0(s->oformat);
1391 if (!s->oformat->write_uncoded_frame)
1392 return AVERROR(ENOSYS);
1393 return s->oformat->write_uncoded_frame(s, stream_index, NULL,
1394 AV_WRITE_UNCODED_FRAME_QUERY);
1395 }
1396