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 "libavcodec/packet_internal.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/dict.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/timestamp.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/mathematics.h"
34
35 /**
36 * @file
37 * muxing functions for use within libavformat
38 */
39
40 /* fraction handling */
41
42 /**
43 * f = val + (num / den) + 0.5.
44 *
45 * 'num' is normalized so that it is such as 0 <= num < den.
46 *
47 * @param f fractional number
48 * @param val integer value
49 * @param num must be >= 0
50 * @param den must be >= 1
51 */
frac_init(FFFrac * f,int64_t val,int64_t num,int64_t den)52 static void frac_init(FFFrac *f, int64_t val, int64_t num, int64_t den)
53 {
54 num += (den >> 1);
55 if (num >= den) {
56 val += num / den;
57 num = num % den;
58 }
59 f->val = val;
60 f->num = num;
61 f->den = den;
62 }
63
64 /**
65 * Fractional addition to f: f = f + (incr / f->den).
66 *
67 * @param f fractional number
68 * @param incr increment, can be positive or negative
69 */
frac_add(FFFrac * f,int64_t incr)70 static void frac_add(FFFrac *f, int64_t incr)
71 {
72 int64_t num, den;
73
74 num = f->num + incr;
75 den = f->den;
76 if (num < 0) {
77 f->val += num / den;
78 num = num % den;
79 if (num < 0) {
80 num += den;
81 f->val--;
82 }
83 } else if (num >= den) {
84 f->val += num / den;
85 num = num % den;
86 }
87 f->num = num;
88 }
89
ff_choose_timebase(AVFormatContext * s,AVStream * st,int min_precision)90 AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
91 {
92 AVRational q;
93 int j;
94
95 q = st->time_base;
96
97 for (j=2; j<14; j+= 1+(j>2))
98 while (q.den / q.num < min_precision && q.num % j == 0)
99 q.num /= j;
100 while (q.den / q.num < min_precision && q.den < (1<<24))
101 q.den <<= 1;
102
103 return q;
104 }
105
ff_choose_chroma_location(AVFormatContext * s,AVStream * st)106 enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
107 {
108 AVCodecParameters *par = st->codecpar;
109 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(par->format);
110
111 if (par->chroma_location != AVCHROMA_LOC_UNSPECIFIED)
112 return par->chroma_location;
113
114 if (pix_desc) {
115 if (pix_desc->log2_chroma_h == 0) {
116 return AVCHROMA_LOC_TOPLEFT;
117 } else if (pix_desc->log2_chroma_w == 1 && pix_desc->log2_chroma_h == 1) {
118 if (par->field_order == AV_FIELD_UNKNOWN || par->field_order == AV_FIELD_PROGRESSIVE) {
119 switch (par->codec_id) {
120 case AV_CODEC_ID_MJPEG:
121 case AV_CODEC_ID_MPEG1VIDEO: return AVCHROMA_LOC_CENTER;
122 }
123 }
124 if (par->field_order == AV_FIELD_UNKNOWN || par->field_order != AV_FIELD_PROGRESSIVE) {
125 switch (par->codec_id) {
126 case AV_CODEC_ID_MPEG2VIDEO: return AVCHROMA_LOC_LEFT;
127 }
128 }
129 }
130 }
131
132 return AVCHROMA_LOC_UNSPECIFIED;
133
134 }
135
avformat_alloc_output_context2(AVFormatContext ** avctx,ff_const59 AVOutputFormat * oformat,const char * format,const char * filename)136 int avformat_alloc_output_context2(AVFormatContext **avctx, ff_const59 AVOutputFormat *oformat,
137 const char *format, const char *filename)
138 {
139 AVFormatContext *s = avformat_alloc_context();
140 int ret = 0;
141
142 *avctx = NULL;
143 if (!s)
144 goto nomem;
145
146 if (!oformat) {
147 if (format) {
148 oformat = av_guess_format(format, NULL, NULL);
149 if (!oformat) {
150 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
151 ret = AVERROR(EINVAL);
152 goto error;
153 }
154 } else {
155 oformat = av_guess_format(NULL, filename, NULL);
156 if (!oformat) {
157 ret = AVERROR(EINVAL);
158 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
159 filename);
160 goto error;
161 }
162 }
163 }
164
165 s->oformat = oformat;
166 if (s->oformat->priv_data_size > 0) {
167 s->priv_data = av_mallocz(s->oformat->priv_data_size);
168 if (!s->priv_data)
169 goto nomem;
170 if (s->oformat->priv_class) {
171 *(const AVClass**)s->priv_data= s->oformat->priv_class;
172 av_opt_set_defaults(s->priv_data);
173 }
174 } else
175 s->priv_data = NULL;
176
177 if (filename) {
178 #if FF_API_FORMAT_FILENAME
179 FF_DISABLE_DEPRECATION_WARNINGS
180 av_strlcpy(s->filename, filename, sizeof(s->filename));
181 FF_ENABLE_DEPRECATION_WARNINGS
182 #endif
183 if (!(s->url = av_strdup(filename)))
184 goto nomem;
185
186 }
187 *avctx = s;
188 return 0;
189 nomem:
190 av_log(s, AV_LOG_ERROR, "Out of memory\n");
191 ret = AVERROR(ENOMEM);
192 error:
193 avformat_free_context(s);
194 return ret;
195 }
196
validate_codec_tag(AVFormatContext * s,AVStream * st)197 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
198 {
199 const AVCodecTag *avctag;
200 int n;
201 enum AVCodecID id = AV_CODEC_ID_NONE;
202 int64_t tag = -1;
203
204 /**
205 * Check that tag + id is in the table
206 * If neither is in the table -> OK
207 * If tag is in the table with another id -> FAIL
208 * If id is in the table with another tag -> FAIL unless strict < normal
209 */
210 for (n = 0; s->oformat->codec_tag[n]; n++) {
211 avctag = s->oformat->codec_tag[n];
212 while (avctag->id != AV_CODEC_ID_NONE) {
213 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codecpar->codec_tag)) {
214 id = avctag->id;
215 if (id == st->codecpar->codec_id)
216 return 1;
217 }
218 if (avctag->id == st->codecpar->codec_id)
219 tag = avctag->tag;
220 avctag++;
221 }
222 }
223 if (id != AV_CODEC_ID_NONE)
224 return 0;
225 if (tag >= 0 && (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
226 return 0;
227 return 1;
228 }
229
230
init_muxer(AVFormatContext * s,AVDictionary ** options)231 static int init_muxer(AVFormatContext *s, AVDictionary **options)
232 {
233 int ret = 0, i;
234 AVStream *st;
235 AVDictionary *tmp = NULL;
236 AVCodecParameters *par = NULL;
237 const AVOutputFormat *of = s->oformat;
238 const AVCodecDescriptor *desc;
239 AVDictionaryEntry *e;
240
241 if (options)
242 av_dict_copy(&tmp, *options, 0);
243
244 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
245 goto fail;
246 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
247 (ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
248 goto fail;
249
250 #if FF_API_FORMAT_FILENAME
251 FF_DISABLE_DEPRECATION_WARNINGS
252 if (!s->url && !(s->url = av_strdup(s->filename))) {
253 FF_ENABLE_DEPRECATION_WARNINGS
254 #else
255 if (!s->url && !(s->url = av_strdup(""))) {
256 #endif
257 ret = AVERROR(ENOMEM);
258 goto fail;
259 }
260
261 #if FF_API_LAVF_AVCTX
262 FF_DISABLE_DEPRECATION_WARNINGS
263 if (s->nb_streams && s->streams[0]->codec->flags & AV_CODEC_FLAG_BITEXACT) {
264 if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
265 av_log(s, AV_LOG_WARNING,
266 "The AVFormatContext is not in set to bitexact mode, only "
267 "the AVCodecContext. If this is not intended, set "
268 "AVFormatContext.flags |= AVFMT_FLAG_BITEXACT.\n");
269 }
270 }
271 FF_ENABLE_DEPRECATION_WARNINGS
272 #endif
273
274 // some sanity checks
275 if (s->nb_streams == 0 && !(of->flags & AVFMT_NOSTREAMS)) {
276 av_log(s, AV_LOG_ERROR, "No streams to mux were specified\n");
277 ret = AVERROR(EINVAL);
278 goto fail;
279 }
280
281 for (i = 0; i < s->nb_streams; i++) {
282 st = s->streams[i];
283 par = st->codecpar;
284
285 #if FF_API_LAVF_AVCTX
286 FF_DISABLE_DEPRECATION_WARNINGS
287 if (st->codecpar->codec_type == AVMEDIA_TYPE_UNKNOWN &&
288 st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN) {
289 av_log(s, AV_LOG_WARNING, "Using AVStream.codec to pass codec "
290 "parameters to muxers is deprecated, use AVStream.codecpar "
291 "instead.\n");
292 ret = avcodec_parameters_from_context(st->codecpar, st->codec);
293 if (ret < 0)
294 goto fail;
295 }
296 FF_ENABLE_DEPRECATION_WARNINGS
297 #endif
298
299 if (!st->time_base.num) {
300 /* fall back on the default timebase values */
301 if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)
302 avpriv_set_pts_info(st, 64, 1, par->sample_rate);
303 else
304 avpriv_set_pts_info(st, 33, 1, 90000);
305 }
306
307 switch (par->codec_type) {
308 case AVMEDIA_TYPE_AUDIO:
309 if (par->sample_rate <= 0) {
310 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
311 ret = AVERROR(EINVAL);
312 goto fail;
313 }
314 if (!par->block_align)
315 par->block_align = par->channels *
316 av_get_bits_per_sample(par->codec_id) >> 3;
317 break;
318 case AVMEDIA_TYPE_VIDEO:
319 if ((par->width <= 0 || par->height <= 0) &&
320 !(of->flags & AVFMT_NODIMENSIONS)) {
321 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
322 ret = AVERROR(EINVAL);
323 goto fail;
324 }
325 if (av_cmp_q(st->sample_aspect_ratio, par->sample_aspect_ratio)
326 && fabs(av_q2d(st->sample_aspect_ratio) - av_q2d(par->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
327 ) {
328 if (st->sample_aspect_ratio.num != 0 &&
329 st->sample_aspect_ratio.den != 0 &&
330 par->sample_aspect_ratio.num != 0 &&
331 par->sample_aspect_ratio.den != 0) {
332 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
333 "(%d/%d) and encoder layer (%d/%d)\n",
334 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
335 par->sample_aspect_ratio.num,
336 par->sample_aspect_ratio.den);
337 ret = AVERROR(EINVAL);
338 goto fail;
339 }
340 }
341 break;
342 }
343
344 desc = avcodec_descriptor_get(par->codec_id);
345 if (desc && desc->props & AV_CODEC_PROP_REORDER)
346 st->internal->reorder = 1;
347
348 st->internal->is_intra_only = ff_is_intra_only(par->codec_id);
349
350 if (of->codec_tag) {
351 if ( par->codec_tag
352 && par->codec_id == AV_CODEC_ID_RAWVIDEO
353 && ( av_codec_get_tag(of->codec_tag, par->codec_id) == 0
354 || av_codec_get_tag(of->codec_tag, par->codec_id) == MKTAG('r', 'a', 'w', ' '))
355 && !validate_codec_tag(s, st)) {
356 // the current rawvideo encoding system ends up setting
357 // the wrong codec_tag for avi/mov, we override it here
358 par->codec_tag = 0;
359 }
360 if (par->codec_tag) {
361 if (!validate_codec_tag(s, st)) {
362 const uint32_t otag = av_codec_get_tag(s->oformat->codec_tag, par->codec_id);
363 av_log(s, AV_LOG_ERROR,
364 "Tag %s incompatible with output codec id '%d' (%s)\n",
365 av_fourcc2str(par->codec_tag), par->codec_id, av_fourcc2str(otag));
366 ret = AVERROR_INVALIDDATA;
367 goto fail;
368 }
369 } else
370 par->codec_tag = av_codec_get_tag(of->codec_tag, par->codec_id);
371 }
372
373 if (par->codec_type != AVMEDIA_TYPE_ATTACHMENT)
374 s->internal->nb_interleaved_streams++;
375 }
376
377 if (!s->priv_data && of->priv_data_size > 0) {
378 s->priv_data = av_mallocz(of->priv_data_size);
379 if (!s->priv_data) {
380 ret = AVERROR(ENOMEM);
381 goto fail;
382 }
383 if (of->priv_class) {
384 *(const AVClass **)s->priv_data = of->priv_class;
385 av_opt_set_defaults(s->priv_data);
386 if ((ret = av_opt_set_dict2(s->priv_data, &tmp, AV_OPT_SEARCH_CHILDREN)) < 0)
387 goto fail;
388 }
389 }
390
391 /* set muxer identification string */
392 if (!(s->flags & AVFMT_FLAG_BITEXACT)) {
393 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
394 } else {
395 av_dict_set(&s->metadata, "encoder", NULL, 0);
396 }
397
398 for (e = NULL; e = av_dict_get(s->metadata, "encoder-", e, AV_DICT_IGNORE_SUFFIX); ) {
399 av_dict_set(&s->metadata, e->key, NULL, 0);
400 }
401
402 if (options) {
403 av_dict_free(options);
404 *options = tmp;
405 }
406
407 if (s->oformat->init) {
408 if ((ret = s->oformat->init(s)) < 0) {
409 if (s->oformat->deinit)
410 s->oformat->deinit(s);
411 return ret;
412 }
413 return ret == 0;
414 }
415
416 return 0;
417
418 fail:
419 av_dict_free(&tmp);
420 return ret;
421 }
422
423 static int init_pts(AVFormatContext *s)
424 {
425 int i;
426 AVStream *st;
427
428 /* init PTS generation */
429 for (i = 0; i < s->nb_streams; i++) {
430 int64_t den = AV_NOPTS_VALUE;
431 st = s->streams[i];
432
433 switch (st->codecpar->codec_type) {
434 case AVMEDIA_TYPE_AUDIO:
435 den = (int64_t)st->time_base.num * st->codecpar->sample_rate;
436 break;
437 case AVMEDIA_TYPE_VIDEO:
438 den = (int64_t)st->time_base.num * st->time_base.den;
439 break;
440 default:
441 break;
442 }
443
444 if (!st->internal->priv_pts)
445 st->internal->priv_pts = av_mallocz(sizeof(*st->internal->priv_pts));
446 if (!st->internal->priv_pts)
447 return AVERROR(ENOMEM);
448
449 if (den != AV_NOPTS_VALUE) {
450 if (den <= 0)
451 return AVERROR_INVALIDDATA;
452
453 frac_init(st->internal->priv_pts, 0, 0, den);
454 }
455 }
456
457 if (s->avoid_negative_ts < 0) {
458 av_assert2(s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO);
459 if (s->oformat->flags & (AVFMT_TS_NEGATIVE | AVFMT_NOTIMESTAMPS)) {
460 s->avoid_negative_ts = 0;
461 } else
462 s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_NON_NEGATIVE;
463 }
464
465 return 0;
466 }
467
468 static void flush_if_needed(AVFormatContext *s)
469 {
470 if (s->pb && s->pb->error >= 0) {
471 if (s->flush_packets == 1 || s->flags & AVFMT_FLAG_FLUSH_PACKETS)
472 avio_flush(s->pb);
473 else if (s->flush_packets && !(s->oformat->flags & AVFMT_NOFILE))
474 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);
475 }
476 }
477
478 static void deinit_muxer(AVFormatContext *s)
479 {
480 if (s->oformat && s->oformat->deinit && s->internal->initialized)
481 s->oformat->deinit(s);
482 s->internal->initialized =
483 s->internal->streams_initialized = 0;
484 }
485
486 int avformat_init_output(AVFormatContext *s, AVDictionary **options)
487 {
488 int ret = 0;
489
490 if ((ret = init_muxer(s, options)) < 0)
491 return ret;
492
493 s->internal->initialized = 1;
494 s->internal->streams_initialized = ret;
495
496 if (s->oformat->init && ret) {
497 if ((ret = init_pts(s)) < 0)
498 return ret;
499
500 return AVSTREAM_INIT_IN_INIT_OUTPUT;
501 }
502
503 return AVSTREAM_INIT_IN_WRITE_HEADER;
504 }
505
506 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
507 {
508 int ret = 0;
509 int already_initialized = s->internal->initialized;
510 int streams_already_initialized = s->internal->streams_initialized;
511
512 if (!already_initialized)
513 if ((ret = avformat_init_output(s, options)) < 0)
514 return ret;
515
516 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
517 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
518 if (s->oformat->write_header) {
519 ret = s->oformat->write_header(s);
520 if (ret >= 0 && s->pb && s->pb->error < 0)
521 ret = s->pb->error;
522 if (ret < 0)
523 goto fail;
524 flush_if_needed(s);
525 }
526 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
527 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_UNKNOWN);
528
529 if (!s->internal->streams_initialized) {
530 if ((ret = init_pts(s)) < 0)
531 goto fail;
532 }
533
534 return streams_already_initialized;
535
536 fail:
537 deinit_muxer(s);
538 return ret;
539 }
540
541 #define AV_PKT_FLAG_UNCODED_FRAME 0x2000
542
543
544 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
545 FF_DISABLE_DEPRECATION_WARNINGS
546 //FIXME merge with compute_pkt_fields
547 static int compute_muxer_pkt_fields(AVFormatContext *s, AVStream *st, AVPacket *pkt)
548 {
549 int delay = FFMAX(st->codecpar->video_delay, st->internal->avctx->max_b_frames > 0);
550 int i;
551 int frame_size;
552
553 if (!s->internal->missing_ts_warning &&
554 !(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
555 (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC) || (st->disposition & AV_DISPOSITION_TIMED_THUMBNAILS)) &&
556 (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE)) {
557 av_log(s, AV_LOG_WARNING,
558 "Timestamps are unset in a packet for stream %d. "
559 "This is deprecated and will stop working in the future. "
560 "Fix your code to set the timestamps properly\n", st->index);
561 s->internal->missing_ts_warning = 1;
562 }
563
564 if (s->debug & FF_FDEBUG_TS)
565 av_log(s, AV_LOG_DEBUG, "compute_muxer_pkt_fields: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
566 av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
567
568 if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
569 pkt->pts = pkt->dts;
570
571 //XXX/FIXME this is a temporary hack until all encoders output pts
572 if ((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay) {
573 static int warned;
574 if (!warned) {
575 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
576 warned = 1;
577 }
578 pkt->dts =
579 // pkt->pts= st->cur_dts;
580 pkt->pts = st->internal->priv_pts->val;
581 }
582
583 //calculate dts from pts
584 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
585 st->internal->pts_buffer[0] = pkt->pts;
586 for (i = 1; i < delay + 1 && st->internal->pts_buffer[i] == AV_NOPTS_VALUE; i++)
587 st->internal->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
588 for (i = 0; i<delay && st->internal->pts_buffer[i] > st->internal->pts_buffer[i + 1]; i++)
589 FFSWAP(int64_t, st->internal->pts_buffer[i], st->internal->pts_buffer[i + 1]);
590
591 pkt->dts = st->internal->pts_buffer[0];
592 }
593
594 if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
595 ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
596 st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE &&
597 st->codecpar->codec_type != AVMEDIA_TYPE_DATA &&
598 st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
599 av_log(s, AV_LOG_ERROR,
600 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
601 st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
602 return AVERROR(EINVAL);
603 }
604 if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
605 av_log(s, AV_LOG_ERROR,
606 "pts (%s) < dts (%s) in stream %d\n",
607 av_ts2str(pkt->pts), av_ts2str(pkt->dts),
608 st->index);
609 return AVERROR(EINVAL);
610 }
611
612 if (s->debug & FF_FDEBUG_TS)
613 av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n",
614 av_ts2str(pkt->pts), av_ts2str(pkt->dts));
615
616 st->cur_dts = pkt->dts;
617 st->internal->priv_pts->val = pkt->dts;
618
619 /* update pts */
620 switch (st->codecpar->codec_type) {
621 case AVMEDIA_TYPE_AUDIO:
622 frame_size = (pkt->flags & AV_PKT_FLAG_UNCODED_FRAME) ?
623 (*(AVFrame **)pkt->data)->nb_samples :
624 av_get_audio_frame_duration(st->codec, pkt->size);
625
626 /* HACK/FIXME, we skip the initial 0 size packets as they are most
627 * likely equal to the encoder delay, but it would be better if we
628 * had the real timestamps from the encoder */
629 if (frame_size >= 0 && (pkt->size || st->internal->priv_pts->num != st->internal->priv_pts->den >> 1 || st->internal->priv_pts->val)) {
630 frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * frame_size);
631 }
632 break;
633 case AVMEDIA_TYPE_VIDEO:
634 frac_add(st->internal->priv_pts, (int64_t)st->time_base.den * st->time_base.num);
635 break;
636 }
637 return 0;
638 }
639 FF_ENABLE_DEPRECATION_WARNINGS
640 #endif
641
642 static void guess_pkt_duration(AVFormatContext *s, AVStream *st, AVPacket *pkt)
643 {
644 if (pkt->duration < 0 && st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) {
645 av_log(s, AV_LOG_WARNING, "Packet with invalid duration %"PRId64" in stream %d\n",
646 pkt->duration, pkt->stream_index);
647 pkt->duration = 0;
648 }
649
650 if (pkt->duration)
651 return;
652
653 switch (st->codecpar->codec_type) {
654 case AVMEDIA_TYPE_VIDEO:
655 if (st->avg_frame_rate.num > 0 && st->avg_frame_rate.den > 0) {
656 pkt->duration = av_rescale_q(1, av_inv_q(st->avg_frame_rate),
657 st->time_base);
658 } else if (st->time_base.num * 1000LL > st->time_base.den)
659 pkt->duration = 1;
660 break;
661 case AVMEDIA_TYPE_AUDIO: {
662 int frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
663 if (frame_size && st->codecpar->sample_rate) {
664 pkt->duration = av_rescale_q(frame_size,
665 (AVRational){1, st->codecpar->sample_rate},
666 st->time_base);
667 }
668 break;
669 }
670 }
671 }
672
673 /**
674 * Shift timestamps and call muxer; the original pts/dts are not kept.
675 *
676 * FIXME: this function should NEVER get undefined pts/dts beside when the
677 * AVFMT_NOTIMESTAMPS is set.
678 * Those additional safety checks should be dropped once the correct checks
679 * are set in the callers.
680 */
681 static int write_packet(AVFormatContext *s, AVPacket *pkt)
682 {
683 int ret;
684
685 // If the timestamp offsetting below is adjusted, adjust
686 // ff_interleaved_peek similarly.
687 if (s->output_ts_offset) {
688 AVStream *st = s->streams[pkt->stream_index];
689 int64_t offset = av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
690
691 if (pkt->dts != AV_NOPTS_VALUE)
692 pkt->dts += offset;
693 if (pkt->pts != AV_NOPTS_VALUE)
694 pkt->pts += offset;
695 }
696
697 if (s->avoid_negative_ts > 0) {
698 AVStream *st = s->streams[pkt->stream_index];
699 int64_t offset = st->internal->mux_ts_offset;
700 int64_t ts = s->internal->avoid_negative_ts_use_pts ? pkt->pts : pkt->dts;
701
702 if (s->internal->offset == AV_NOPTS_VALUE && ts != AV_NOPTS_VALUE &&
703 (ts < 0 || s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)) {
704 s->internal->offset = -ts;
705 s->internal->offset_timebase = st->time_base;
706 }
707
708 if (s->internal->offset != AV_NOPTS_VALUE && !offset) {
709 offset = st->internal->mux_ts_offset =
710 av_rescale_q_rnd(s->internal->offset,
711 s->internal->offset_timebase,
712 st->time_base,
713 AV_ROUND_UP);
714 }
715
716 if (pkt->dts != AV_NOPTS_VALUE)
717 pkt->dts += offset;
718 if (pkt->pts != AV_NOPTS_VALUE)
719 pkt->pts += offset;
720
721 if (s->internal->avoid_negative_ts_use_pts) {
722 if (pkt->pts != AV_NOPTS_VALUE && pkt->pts < 0) {
723 av_log(s, AV_LOG_WARNING, "failed to avoid negative "
724 "pts %s in stream %d.\n"
725 "Try -avoid_negative_ts 1 as a possible workaround.\n",
726 av_ts2str(pkt->pts),
727 pkt->stream_index
728 );
729 }
730 } else {
731 av_assert2(pkt->dts == AV_NOPTS_VALUE || pkt->dts >= 0 || s->max_interleave_delta > 0);
732 if (pkt->dts != AV_NOPTS_VALUE && pkt->dts < 0) {
733 av_log(s, AV_LOG_WARNING,
734 "Packets poorly interleaved, failed to avoid negative "
735 "timestamp %s in stream %d.\n"
736 "Try -max_interleave_delta 0 as a possible workaround.\n",
737 av_ts2str(pkt->dts),
738 pkt->stream_index
739 );
740 }
741 }
742 }
743
744 if ((pkt->flags & AV_PKT_FLAG_UNCODED_FRAME)) {
745 AVFrame **frame = (AVFrame **)pkt->data;
746 av_assert0(pkt->size == sizeof(*frame));
747 ret = s->oformat->write_uncoded_frame(s, pkt->stream_index, frame, 0);
748 } else {
749 ret = s->oformat->write_packet(s, pkt);
750 }
751
752 if (s->pb && ret >= 0) {
753 flush_if_needed(s);
754 if (s->pb->error < 0)
755 ret = s->pb->error;
756 }
757
758 if (ret >= 0)
759 s->streams[pkt->stream_index]->nb_frames++;
760
761 return ret;
762 }
763
764 static int check_packet(AVFormatContext *s, AVPacket *pkt)
765 {
766 if (pkt->stream_index < 0 || pkt->stream_index >= s->nb_streams) {
767 av_log(s, AV_LOG_ERROR, "Invalid packet stream index: %d\n",
768 pkt->stream_index);
769 return AVERROR(EINVAL);
770 }
771
772 if (s->streams[pkt->stream_index]->codecpar->codec_type == AVMEDIA_TYPE_ATTACHMENT) {
773 av_log(s, AV_LOG_ERROR, "Received a packet for an attachment stream.\n");
774 return AVERROR(EINVAL);
775 }
776
777 return 0;
778 }
779
780 static int prepare_input_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
781 {
782 #if !FF_API_COMPUTE_PKT_FIELDS2 || !FF_API_LAVF_AVCTX
783 /* sanitize the timestamps */
784 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
785
786 /* when there is no reordering (so dts is equal to pts), but
787 * only one of them is set, set the other as well */
788 if (!st->internal->reorder) {
789 if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE)
790 pkt->pts = pkt->dts;
791 if (pkt->dts == AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
792 pkt->dts = pkt->pts;
793 }
794
795 /* check that the timestamps are set */
796 if (pkt->pts == AV_NOPTS_VALUE || pkt->dts == AV_NOPTS_VALUE) {
797 av_log(s, AV_LOG_ERROR,
798 "Timestamps are unset in a packet for stream %d\n", st->index);
799 return AVERROR(EINVAL);
800 }
801
802 /* check that the dts are increasing (or at least non-decreasing,
803 * if the format allows it */
804 if (st->cur_dts != AV_NOPTS_VALUE &&
805 ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) ||
806 st->cur_dts > pkt->dts)) {
807 av_log(s, AV_LOG_ERROR,
808 "Application provided invalid, non monotonically increasing "
809 "dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
810 st->index, st->cur_dts, pkt->dts);
811 return AVERROR(EINVAL);
812 }
813
814 if (pkt->pts < pkt->dts) {
815 av_log(s, AV_LOG_ERROR, "pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
816 pkt->pts, pkt->dts, st->index);
817 return AVERROR(EINVAL);
818 }
819 }
820 #endif
821 /* update flags */
822 if (st->internal->is_intra_only)
823 pkt->flags |= AV_PKT_FLAG_KEY;
824
825 return 0;
826 }
827
828 #define CHUNK_START 0x1000
829
830 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
831 int (*compare)(AVFormatContext *, const AVPacket *, const AVPacket *))
832 {
833 int ret;
834 PacketList **next_point, *this_pktl;
835 AVStream *st = s->streams[pkt->stream_index];
836 int chunked = s->max_chunk_size || s->max_chunk_duration;
837
838 this_pktl = av_malloc(sizeof(PacketList));
839 if (!this_pktl) {
840 av_packet_unref(pkt);
841 return AVERROR(ENOMEM);
842 }
843 if ((ret = av_packet_make_refcounted(pkt)) < 0) {
844 av_free(this_pktl);
845 av_packet_unref(pkt);
846 return ret;
847 }
848
849 av_packet_move_ref(&this_pktl->pkt, pkt);
850 pkt = &this_pktl->pkt;
851
852 if (st->internal->last_in_packet_buffer) {
853 next_point = &(st->internal->last_in_packet_buffer->next);
854 } else {
855 next_point = &s->internal->packet_buffer;
856 }
857
858 if (chunked) {
859 uint64_t max= av_rescale_q_rnd(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base, AV_ROUND_UP);
860 st->internal->interleaver_chunk_size += pkt->size;
861 st->internal->interleaver_chunk_duration += pkt->duration;
862 if ( (s->max_chunk_size && st->internal->interleaver_chunk_size > s->max_chunk_size)
863 || (max && st->internal->interleaver_chunk_duration > max)) {
864 st->internal->interleaver_chunk_size = 0;
865 pkt->flags |= CHUNK_START;
866 if (max && st->internal->interleaver_chunk_duration > max) {
867 int64_t syncoffset = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
868 int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
869
870 st->internal->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
871 } else
872 st->internal->interleaver_chunk_duration = 0;
873 }
874 }
875 if (*next_point) {
876 if (chunked && !(pkt->flags & CHUNK_START))
877 goto next_non_null;
878
879 if (compare(s, &s->internal->packet_buffer_end->pkt, pkt)) {
880 while ( *next_point
881 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
882 || !compare(s, &(*next_point)->pkt, pkt)))
883 next_point = &(*next_point)->next;
884 if (*next_point)
885 goto next_non_null;
886 } else {
887 next_point = &(s->internal->packet_buffer_end->next);
888 }
889 }
890 av_assert1(!*next_point);
891
892 s->internal->packet_buffer_end = this_pktl;
893 next_non_null:
894
895 this_pktl->next = *next_point;
896
897 st->internal->last_in_packet_buffer = *next_point = this_pktl;
898
899 return 0;
900 }
901
902 static int interleave_compare_dts(AVFormatContext *s, const AVPacket *next,
903 const AVPacket *pkt)
904 {
905 AVStream *st = s->streams[pkt->stream_index];
906 AVStream *st2 = s->streams[next->stream_index];
907 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
908 st->time_base);
909 if (s->audio_preload) {
910 int preload = st ->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
911 int preload2 = st2->codecpar->codec_type == AVMEDIA_TYPE_AUDIO;
912 if (preload != preload2) {
913 int64_t ts, ts2;
914 preload *= s->audio_preload;
915 preload2 *= s->audio_preload;
916 ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - preload;
917 ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - preload2;
918 if (ts == ts2) {
919 ts = ((uint64_t)pkt ->dts*st ->time_base.num*AV_TIME_BASE - (uint64_t)preload *st ->time_base.den)*st2->time_base.den
920 - ((uint64_t)next->dts*st2->time_base.num*AV_TIME_BASE - (uint64_t)preload2*st2->time_base.den)*st ->time_base.den;
921 ts2 = 0;
922 }
923 comp = (ts2 > ts) - (ts2 < ts);
924 }
925 }
926
927 if (comp == 0)
928 return pkt->stream_index < next->stream_index;
929 return comp > 0;
930 }
931
932 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
933 AVPacket *pkt, int flush)
934 {
935 PacketList *pktl;
936 int stream_count = 0;
937 int noninterleaved_count = 0;
938 int i, ret;
939 int eof = flush;
940
941 if (pkt) {
942 if ((ret = ff_interleave_add_packet(s, pkt, interleave_compare_dts)) < 0)
943 return ret;
944 }
945
946 for (i = 0; i < s->nb_streams; i++) {
947 if (s->streams[i]->internal->last_in_packet_buffer) {
948 ++stream_count;
949 } else if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_ATTACHMENT &&
950 s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP8 &&
951 s->streams[i]->codecpar->codec_id != AV_CODEC_ID_VP9) {
952 ++noninterleaved_count;
953 }
954 }
955
956 if (s->internal->nb_interleaved_streams == stream_count)
957 flush = 1;
958
959 if (s->max_interleave_delta > 0 &&
960 s->internal->packet_buffer &&
961 !flush &&
962 s->internal->nb_interleaved_streams == stream_count+noninterleaved_count
963 ) {
964 AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
965 int64_t delta_dts = INT64_MIN;
966 int64_t top_dts = av_rescale_q(top_pkt->dts,
967 s->streams[top_pkt->stream_index]->time_base,
968 AV_TIME_BASE_Q);
969
970 for (i = 0; i < s->nb_streams; i++) {
971 int64_t last_dts;
972 const PacketList *last = s->streams[i]->internal->last_in_packet_buffer;
973
974 if (!last)
975 continue;
976
977 last_dts = av_rescale_q(last->pkt.dts,
978 s->streams[i]->time_base,
979 AV_TIME_BASE_Q);
980 delta_dts = FFMAX(delta_dts, last_dts - top_dts);
981 }
982
983 if (delta_dts > s->max_interleave_delta) {
984 av_log(s, AV_LOG_DEBUG,
985 "Delay between the first packet and last packet in the "
986 "muxing queue is %"PRId64" > %"PRId64": forcing output\n",
987 delta_dts, s->max_interleave_delta);
988 flush = 1;
989 }
990 }
991
992 if (s->internal->packet_buffer &&
993 eof &&
994 (s->flags & AVFMT_FLAG_SHORTEST) &&
995 s->internal->shortest_end == AV_NOPTS_VALUE) {
996 AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
997
998 s->internal->shortest_end = av_rescale_q(top_pkt->dts,
999 s->streams[top_pkt->stream_index]->time_base,
1000 AV_TIME_BASE_Q);
1001 }
1002
1003 if (s->internal->shortest_end != AV_NOPTS_VALUE) {
1004 while (s->internal->packet_buffer) {
1005 AVPacket *top_pkt = &s->internal->packet_buffer->pkt;
1006 AVStream *st;
1007 int64_t top_dts = av_rescale_q(top_pkt->dts,
1008 s->streams[top_pkt->stream_index]->time_base,
1009 AV_TIME_BASE_Q);
1010
1011 if (s->internal->shortest_end + 1 >= top_dts)
1012 break;
1013
1014 pktl = s->internal->packet_buffer;
1015 st = s->streams[pktl->pkt.stream_index];
1016
1017 s->internal->packet_buffer = pktl->next;
1018 if (!s->internal->packet_buffer)
1019 s->internal->packet_buffer_end = NULL;
1020
1021 if (st->internal->last_in_packet_buffer == pktl)
1022 st->internal->last_in_packet_buffer = NULL;
1023
1024 av_packet_unref(&pktl->pkt);
1025 av_freep(&pktl);
1026 flush = 0;
1027 }
1028 }
1029
1030 if (stream_count && flush) {
1031 AVStream *st;
1032 pktl = s->internal->packet_buffer;
1033 *out = pktl->pkt;
1034 st = s->streams[out->stream_index];
1035
1036 s->internal->packet_buffer = pktl->next;
1037 if (!s->internal->packet_buffer)
1038 s->internal->packet_buffer_end = NULL;
1039
1040 if (st->internal->last_in_packet_buffer == pktl)
1041 st->internal->last_in_packet_buffer = NULL;
1042 av_freep(&pktl);
1043
1044 return 1;
1045 } else {
1046 return 0;
1047 }
1048 }
1049
1050 int ff_get_muxer_ts_offset(AVFormatContext *s, int stream_index, int64_t *offset)
1051 {
1052 AVStream *st;
1053
1054 if (stream_index < 0 || stream_index >= s->nb_streams)
1055 return AVERROR(EINVAL);
1056
1057 st = s->streams[stream_index];
1058 *offset = st->internal->mux_ts_offset;
1059
1060 if (s->output_ts_offset)
1061 *offset += av_rescale_q(s->output_ts_offset, AV_TIME_BASE_Q, st->time_base);
1062
1063 return 0;
1064 }
1065
1066 const AVPacket *ff_interleaved_peek(AVFormatContext *s, int stream)
1067 {
1068 PacketList *pktl = s->internal->packet_buffer;
1069 while (pktl) {
1070 if (pktl->pkt.stream_index == stream) {
1071 return &pktl->pkt;
1072 }
1073 pktl = pktl->next;
1074 }
1075 return NULL;
1076 }
1077
1078 /**
1079 * Interleave an AVPacket correctly so it can be muxed.
1080 * @param out the interleaved packet will be output here
1081 * @param in the input packet; will always be blank on return if not NULL
1082 * @param flush 1 if no further packets are available as input and all
1083 * remaining packets should be output
1084 * @return 1 if a packet was output, 0 if no packet could be output,
1085 * < 0 if an error occurred
1086 */
1087 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush)
1088 {
1089 if (s->oformat->interleave_packet) {
1090 return s->oformat->interleave_packet(s, out, in, flush);
1091 } else
1092 return ff_interleave_packet_per_dts(s, out, in, flush);
1093 }
1094
1095 static int check_bitstream(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1096 {
1097 int ret;
1098
1099 if (!(s->flags & AVFMT_FLAG_AUTO_BSF))
1100 return 1;
1101
1102 if (s->oformat->check_bitstream) {
1103 if (!st->internal->bitstream_checked) {
1104 if ((ret = s->oformat->check_bitstream(s, pkt)) < 0)
1105 return ret;
1106 else if (ret == 1)
1107 st->internal->bitstream_checked = 1;
1108 }
1109 }
1110
1111 return 1;
1112 }
1113
1114 static int interleaved_write_packet(AVFormatContext *s, AVPacket *pkt, int flush)
1115 {
1116 for (;; ) {
1117 AVPacket opkt;
1118 int ret = interleave_packet(s, &opkt, pkt, flush);
1119 if (ret <= 0)
1120 return ret;
1121
1122 pkt = NULL;
1123
1124 ret = write_packet(s, &opkt);
1125
1126 av_packet_unref(&opkt);
1127
1128 if (ret < 0)
1129 return ret;
1130 }
1131 }
1132
1133 static int write_packet_common(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1134 {
1135 int ret;
1136
1137 if (s->debug & FF_FDEBUG_TS)
1138 av_log(s, AV_LOG_DEBUG, "%s size:%d dts:%s pts:%s\n", __FUNCTION__,
1139 pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
1140
1141 guess_pkt_duration(s, st, pkt);
1142
1143 #if FF_API_COMPUTE_PKT_FIELDS2 && FF_API_LAVF_AVCTX
1144 if ((ret = compute_muxer_pkt_fields(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1145 return ret;
1146 #endif
1147
1148 if (interleaved) {
1149 if (pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
1150 return AVERROR(EINVAL);
1151 return interleaved_write_packet(s, pkt, 0);
1152 } else {
1153 return write_packet(s, pkt);
1154 }
1155 }
1156
1157 static int write_packets_from_bsfs(AVFormatContext *s, AVStream *st, AVPacket *pkt, int interleaved)
1158 {
1159 AVBSFContext *bsfc = st->internal->bsfc;
1160 int ret;
1161
1162 if ((ret = av_bsf_send_packet(bsfc, pkt)) < 0) {
1163 av_log(s, AV_LOG_ERROR,
1164 "Failed to send packet to filter %s for stream %d\n",
1165 bsfc->filter->name, st->index);
1166 return ret;
1167 }
1168
1169 do {
1170 ret = av_bsf_receive_packet(bsfc, pkt);
1171 if (ret < 0) {
1172 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
1173 return 0;
1174 av_log(s, AV_LOG_ERROR, "Error applying bitstream filters to an output "
1175 "packet for stream #%d: %s\n", st->index, av_err2str(ret));
1176 if (!(s->error_recognition & AV_EF_EXPLODE) && ret != AVERROR(ENOMEM))
1177 continue;
1178 return ret;
1179 }
1180 av_packet_rescale_ts(pkt, bsfc->time_base_out, st->time_base);
1181 ret = write_packet_common(s, st, pkt, interleaved);
1182 if (ret >= 0 && !interleaved) // a successful write_packet_common already unrefed pkt for interleaved
1183 av_packet_unref(pkt);
1184 } while (ret >= 0);
1185
1186 return ret;
1187 }
1188
1189 static int write_packets_common(AVFormatContext *s, AVPacket *pkt, int interleaved)
1190 {
1191 AVStream *st;
1192 int ret = check_packet(s, pkt);
1193 if (ret < 0)
1194 return ret;
1195 st = s->streams[pkt->stream_index];
1196
1197 ret = prepare_input_packet(s, st, pkt);
1198 if (ret < 0)
1199 return ret;
1200
1201 ret = check_bitstream(s, st, pkt);
1202 if (ret < 0)
1203 return ret;
1204
1205 if (st->internal->bsfc) {
1206 return write_packets_from_bsfs(s, st, pkt, interleaved);
1207 } else {
1208 return write_packet_common(s, st, pkt, interleaved);
1209 }
1210 }
1211
1212 int av_write_frame(AVFormatContext *s, AVPacket *in)
1213 {
1214 AVPacket *pkt = s->internal->pkt;
1215 int ret;
1216
1217 if (!in) {
1218 if (s->oformat->flags & AVFMT_ALLOW_FLUSH) {
1219 ret = s->oformat->write_packet(s, NULL);
1220 flush_if_needed(s);
1221 if (ret >= 0 && s->pb && s->pb->error < 0)
1222 ret = s->pb->error;
1223 return ret;
1224 }
1225 return 1;
1226 }
1227
1228 if (in->flags & AV_PKT_FLAG_UNCODED_FRAME) {
1229 pkt = in;
1230 } else {
1231 /* We don't own in, so we have to make sure not to modify it.
1232 * The following avoids copying in's data unnecessarily.
1233 * Copying side data is unavoidable as a bitstream filter
1234 * may change it, e.g. free it on errors. */
1235 av_packet_unref(pkt);
1236 pkt->buf = NULL;
1237 pkt->data = in->data;
1238 pkt->size = in->size;
1239 ret = av_packet_copy_props(pkt, in);
1240 if (ret < 0)
1241 return ret;
1242 if (in->buf) {
1243 pkt->buf = av_buffer_ref(in->buf);
1244 if (!pkt->buf) {
1245 ret = AVERROR(ENOMEM);
1246 goto fail;
1247 }
1248 }
1249 }
1250
1251 ret = write_packets_common(s, pkt, 0/*non-interleaved*/);
1252
1253 fail:
1254 // Uncoded frames using the noninterleaved codepath are also freed here
1255 av_packet_unref(pkt);
1256 return ret;
1257 }
1258
1259 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt)
1260 {
1261 int ret;
1262
1263 if (pkt) {
1264 ret = write_packets_common(s, pkt, 1/*interleaved*/);
1265 if (ret < 0)
1266 av_packet_unref(pkt);
1267 return ret;
1268 } else {
1269 av_log(s, AV_LOG_TRACE, "av_interleaved_write_frame FLUSH\n");
1270 return interleaved_write_packet(s, NULL, 1/*flush*/);
1271 }
1272 }
1273
1274 int av_write_trailer(AVFormatContext *s)
1275 {
1276 int i, ret1, ret = 0;
1277 AVPacket *pkt = s->internal->pkt;
1278
1279 av_packet_unref(pkt);
1280 for (i = 0; i < s->nb_streams; i++) {
1281 if (s->streams[i]->internal->bsfc) {
1282 ret1 = write_packets_from_bsfs(s, s->streams[i], pkt, 1/*interleaved*/);
1283 if (ret1 < 0)
1284 av_packet_unref(pkt);
1285 if (ret >= 0)
1286 ret = ret1;
1287 }
1288 }
1289 ret1 = interleaved_write_packet(s, NULL, 1);
1290 if (ret >= 0)
1291 ret = ret1;
1292
1293 if (s->oformat->write_trailer) {
1294 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
1295 avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
1296 if (ret >= 0) {
1297 ret = s->oformat->write_trailer(s);
1298 } else {
1299 s->oformat->write_trailer(s);
1300 }
1301 }
1302
1303 deinit_muxer(s);
1304
1305 if (s->pb)
1306 avio_flush(s->pb);
1307 if (ret == 0)
1308 ret = s->pb ? s->pb->error : 0;
1309 for (i = 0; i < s->nb_streams; i++) {
1310 av_freep(&s->streams[i]->priv_data);
1311 av_freep(&s->streams[i]->index_entries);
1312 }
1313 if (s->oformat->priv_class)
1314 av_opt_free(s->priv_data);
1315 av_freep(&s->priv_data);
1316 return ret;
1317 }
1318
1319 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
1320 int64_t *dts, int64_t *wall)
1321 {
1322 if (!s->oformat || !s->oformat->get_output_timestamp)
1323 return AVERROR(ENOSYS);
1324 s->oformat->get_output_timestamp(s, stream, dts, wall);
1325 return 0;
1326 }
1327
1328 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
1329 AVFormatContext *src, int interleave)
1330 {
1331 AVPacket local_pkt;
1332 int ret;
1333
1334 local_pkt = *pkt;
1335 local_pkt.stream_index = dst_stream;
1336
1337 av_packet_rescale_ts(&local_pkt,
1338 src->streams[pkt->stream_index]->time_base,
1339 dst->streams[dst_stream]->time_base);
1340
1341 if (interleave) ret = av_interleaved_write_frame(dst, &local_pkt);
1342 else ret = av_write_frame(dst, &local_pkt);
1343 pkt->buf = local_pkt.buf;
1344 pkt->side_data = local_pkt.side_data;
1345 pkt->side_data_elems = local_pkt.side_data_elems;
1346 return ret;
1347 }
1348
1349 static void uncoded_frame_free(void *unused, uint8_t *data)
1350 {
1351 av_frame_free((AVFrame **)data);
1352 av_free(data);
1353 }
1354
1355 static int write_uncoded_frame_internal(AVFormatContext *s, int stream_index,
1356 AVFrame *frame, int interleaved)
1357 {
1358 AVPacket *pkt = s->internal->pkt;
1359
1360 av_assert0(s->oformat);
1361 if (!s->oformat->write_uncoded_frame) {
1362 av_frame_free(&frame);
1363 return AVERROR(ENOSYS);
1364 }
1365
1366 if (!frame) {
1367 pkt = NULL;
1368 } else {
1369 size_t bufsize = sizeof(frame) + AV_INPUT_BUFFER_PADDING_SIZE;
1370 AVFrame **framep = av_mallocz(bufsize);
1371
1372 if (!framep)
1373 goto fail;
1374 av_packet_unref(pkt);
1375 pkt->buf = av_buffer_create((void *)framep, bufsize,
1376 uncoded_frame_free, NULL, 0);
1377 if (!pkt->buf) {
1378 av_free(framep);
1379 fail:
1380 av_frame_free(&frame);
1381 return AVERROR(ENOMEM);
1382 }
1383 *framep = frame;
1384
1385 pkt->data = (void *)framep;
1386 pkt->size = sizeof(frame);
1387 pkt->pts =
1388 pkt->dts = frame->pts;
1389 pkt->duration = frame->pkt_duration;
1390 pkt->stream_index = stream_index;
1391 pkt->flags |= AV_PKT_FLAG_UNCODED_FRAME;
1392 }
1393
1394 return interleaved ? av_interleaved_write_frame(s, pkt) :
1395 av_write_frame(s, pkt);
1396 }
1397
1398 int av_write_uncoded_frame(AVFormatContext *s, int stream_index,
1399 AVFrame *frame)
1400 {
1401 return write_uncoded_frame_internal(s, stream_index, frame, 0);
1402 }
1403
1404 int av_interleaved_write_uncoded_frame(AVFormatContext *s, int stream_index,
1405 AVFrame *frame)
1406 {
1407 return write_uncoded_frame_internal(s, stream_index, frame, 1);
1408 }
1409
1410 int av_write_uncoded_frame_query(AVFormatContext *s, int stream_index)
1411 {
1412 av_assert0(s->oformat);
1413 if (!s->oformat->write_uncoded_frame)
1414 return AVERROR(ENOSYS);
1415 return s->oformat->write_uncoded_frame(s, stream_index, NULL,
1416 AV_WRITE_UNCODED_FRAME_QUERY);
1417 }
1418