2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/thread.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
63 * various utility functions for use within FFmpeg
66 unsigned avformat_version(void)
68 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
69 return LIBAVFORMAT_VERSION_INT;
72 const char *avformat_configuration(void)
74 return FFMPEG_CONFIGURATION;
77 const char *avformat_license(void)
79 #define LICENSE_PREFIX "libavformat license: "
80 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
83 int ff_lock_avformat(void)
85 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
88 int ff_unlock_avformat(void)
90 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
93 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
95 static int is_relative(int64_t ts) {
96 return ts > (RELATIVE_TS_BASE - (1LL<<48));
100 * Wrap a given time stamp, if there is an indication for an overflow
103 * @param timestamp the time stamp to wrap
104 * @return resulting time stamp
106 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
108 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
109 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
110 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
111 timestamp < st->pts_wrap_reference)
112 return timestamp + (1ULL << st->pts_wrap_bits);
113 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
114 timestamp >= st->pts_wrap_reference)
115 return timestamp - (1ULL << st->pts_wrap_bits);
120 #if FF_API_FORMAT_GET_SET
121 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
122 #if FF_API_LAVF_FFSERVER
123 FF_DISABLE_DEPRECATION_WARNINGS
124 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
125 FF_ENABLE_DEPRECATION_WARNINGS
127 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
128 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
129 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
130 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
131 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
132 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
133 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
134 #if FF_API_OLD_OPEN_CALLBACKS
135 FF_DISABLE_DEPRECATION_WARNINGS
136 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
137 FF_ENABLE_DEPRECATION_WARNINGS
141 int64_t av_stream_get_end_pts(const AVStream *st)
143 if (st->internal->priv_pts) {
144 return st->internal->priv_pts->val;
146 return AV_NOPTS_VALUE;
149 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
154 void av_format_inject_global_side_data(AVFormatContext *s)
157 s->internal->inject_global_side_data = 1;
158 for (i = 0; i < s->nb_streams; i++) {
159 AVStream *st = s->streams[i];
160 st->inject_global_side_data = 1;
164 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
166 av_assert0(!dst->codec_whitelist &&
167 !dst->format_whitelist &&
168 !dst->protocol_whitelist &&
169 !dst->protocol_blacklist);
170 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
171 dst->format_whitelist = av_strdup(src->format_whitelist);
172 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
173 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
174 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 || (src-> format_whitelist && !dst-> format_whitelist)
176 || (src->protocol_whitelist && !dst->protocol_whitelist)
177 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
178 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
179 return AVERROR(ENOMEM);
184 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
186 #if FF_API_LAVF_AVCTX
187 FF_DISABLE_DEPRECATION_WARNINGS
188 if (st->codec->codec)
189 return st->codec->codec;
190 FF_ENABLE_DEPRECATION_WARNINGS
193 switch (st->codecpar->codec_type) {
194 case AVMEDIA_TYPE_VIDEO:
195 if (s->video_codec) return s->video_codec;
197 case AVMEDIA_TYPE_AUDIO:
198 if (s->audio_codec) return s->audio_codec;
200 case AVMEDIA_TYPE_SUBTITLE:
201 if (s->subtitle_codec) return s->subtitle_codec;
205 return avcodec_find_decoder(codec_id);
208 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
210 const AVCodec *codec;
212 #if CONFIG_H264_DECODER
213 /* Other parts of the code assume this decoder to be used for h264,
214 * so force it if possible. */
215 if (codec_id == AV_CODEC_ID_H264)
216 return avcodec_find_decoder_by_name("h264");
219 codec = find_decoder(s, st, codec_id);
223 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
224 const AVCodec *probe_codec = NULL;
225 while (probe_codec = av_codec_next(probe_codec)) {
226 if (probe_codec->id == codec_id &&
227 av_codec_is_decoder(probe_codec) &&
228 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
237 #if FF_API_FORMAT_GET_SET
238 int av_format_get_probe_score(const AVFormatContext *s)
240 return s->probe_score;
244 /* an arbitrarily chosen "sane" max packet size -- 50M */
245 #define SANE_CHUNK_SIZE (50000000)
247 int ffio_limit(AVIOContext *s, int size)
249 if (s->maxsize>= 0) {
250 int64_t remaining= s->maxsize - avio_tell(s);
251 if (remaining < size) {
252 int64_t newsize = avio_size(s);
253 if (!s->maxsize || s->maxsize<newsize)
254 s->maxsize = newsize - !newsize;
255 remaining= s->maxsize - avio_tell(s);
256 remaining= FFMAX(remaining, 0);
259 if (s->maxsize>= 0 && remaining+1 < size) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
267 /* Read the data in sane-sized chunks and append to pkt.
268 * Return the number of bytes read or an error. */
269 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
271 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
272 int orig_size = pkt->size;
276 int prev_size = pkt->size;
279 /* When the caller requests a lot of data, limit it to the amount
280 * left in file or SANE_CHUNK_SIZE when it is not known. */
282 if (read_size > SANE_CHUNK_SIZE/10) {
283 read_size = ffio_limit(s, read_size);
284 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
286 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
289 ret = av_grow_packet(pkt, read_size);
293 ret = avio_read(s, pkt->data + prev_size, read_size);
294 if (ret != read_size) {
295 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
302 pkt->flags |= AV_PKT_FLAG_CORRUPT;
306 av_packet_unref(pkt);
307 return pkt->size > orig_size ? pkt->size - orig_size : ret;
310 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
315 pkt->pos = avio_tell(s);
317 return append_packet_chunked(s, pkt, size);
320 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 return append_packet_chunked(s, pkt, size);
327 int av_filename_number_test(const char *filename)
331 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
334 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
337 static const struct {
340 enum AVMediaType type;
342 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
343 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
344 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
345 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
346 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
347 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
348 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
349 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
350 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
351 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
352 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
353 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
354 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
355 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
356 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
360 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
364 av_log(s, AV_LOG_DEBUG,
365 "Probe with size=%d, packets=%d detected %s with score=%d\n",
366 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
368 for (i = 0; fmt_id_type[i].name; i++) {
369 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
370 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
371 st->codecpar->sample_rate)
373 if (st->request_probe > score &&
374 st->codecpar->codec_id != fmt_id_type[i].id)
376 st->codecpar->codec_id = fmt_id_type[i].id;
377 st->codecpar->codec_type = fmt_id_type[i].type;
378 st->internal->need_context_update = 1;
379 #if FF_API_LAVF_AVCTX
380 FF_DISABLE_DEPRECATION_WARNINGS
381 st->codec->codec_type = st->codecpar->codec_type;
382 st->codec->codec_id = st->codecpar->codec_id;
383 FF_ENABLE_DEPRECATION_WARNINGS
392 /************************************************************/
393 /* input media file */
395 int av_demuxer_open(AVFormatContext *ic) {
398 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
399 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
400 return AVERROR(EINVAL);
403 if (ic->iformat->read_header) {
404 err = ic->iformat->read_header(ic);
409 if (ic->pb && !ic->internal->data_offset)
410 ic->internal->data_offset = avio_tell(ic->pb);
415 /* Open input file and probe the format if necessary. */
416 static int init_input(AVFormatContext *s, const char *filename,
417 AVDictionary **options)
420 AVProbeData pd = { filename, NULL, 0 };
421 int score = AVPROBE_SCORE_RETRY;
424 s->flags |= AVFMT_FLAG_CUSTOM_IO;
426 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
427 s, 0, s->format_probesize);
428 else if (s->iformat->flags & AVFMT_NOFILE)
429 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
430 "will be ignored with AVFMT_NOFILE format.\n");
434 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
435 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
438 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
443 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
444 s, 0, s->format_probesize);
447 static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
448 AVPacketList **plast_pktl, int ref)
450 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
454 return AVERROR(ENOMEM);
457 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
466 (*plast_pktl)->next = pktl;
468 *packet_buffer = pktl;
470 /* Add the packet in the buffered packet list. */
475 int avformat_queue_attached_pictures(AVFormatContext *s)
478 for (i = 0; i < s->nb_streams; i++)
479 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
480 s->streams[i]->discard < AVDISCARD_ALL) {
481 if (s->streams[i]->attached_pic.size <= 0) {
482 av_log(s, AV_LOG_WARNING,
483 "Attached picture on stream %d has invalid size, "
488 ret = add_to_pktbuf(&s->internal->raw_packet_buffer,
489 &s->streams[i]->attached_pic,
490 &s->internal->raw_packet_buffer_end, 1);
497 static int update_stream_avctx(AVFormatContext *s)
500 for (i = 0; i < s->nb_streams; i++) {
501 AVStream *st = s->streams[i];
503 if (!st->internal->need_context_update)
506 /* close parser, because it depends on the codec */
507 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
508 av_parser_close(st->parser);
512 /* update internal codec context, for the parser */
513 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
517 #if FF_API_LAVF_AVCTX
518 FF_DISABLE_DEPRECATION_WARNINGS
519 /* update deprecated public codec context */
520 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
523 FF_ENABLE_DEPRECATION_WARNINGS
526 st->internal->need_context_update = 0;
532 int avformat_open_input(AVFormatContext **ps, const char *filename,
533 AVInputFormat *fmt, AVDictionary **options)
535 AVFormatContext *s = *ps;
537 AVDictionary *tmp = NULL;
538 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
540 if (!s && !(s = avformat_alloc_context()))
541 return AVERROR(ENOMEM);
543 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
544 return AVERROR(EINVAL);
550 av_dict_copy(&tmp, *options, 0);
552 if (s->pb) // must be before any goto fail
553 s->flags |= AVFMT_FLAG_CUSTOM_IO;
555 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
558 if (!(s->url = av_strdup(filename ? filename : ""))) {
559 ret = AVERROR(ENOMEM);
563 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
564 if ((ret = init_input(s, filename, &tmp)) < 0)
566 s->probe_score = ret;
568 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
569 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
570 if (!s->protocol_whitelist) {
571 ret = AVERROR(ENOMEM);
576 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
577 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
578 if (!s->protocol_blacklist) {
579 ret = AVERROR(ENOMEM);
584 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
585 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
586 ret = AVERROR(EINVAL);
590 avio_skip(s->pb, s->skip_initial_bytes);
592 /* Check filename in case an image number is expected. */
593 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
594 if (!av_filename_number_test(filename)) {
595 ret = AVERROR(EINVAL);
600 s->duration = s->start_time = AV_NOPTS_VALUE;
602 /* Allocate private data. */
603 if (s->iformat->priv_data_size > 0) {
604 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
605 ret = AVERROR(ENOMEM);
608 if (s->iformat->priv_class) {
609 *(const AVClass **) s->priv_data = s->iformat->priv_class;
610 av_opt_set_defaults(s->priv_data);
611 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
616 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
618 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
621 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
622 if ((ret = s->iformat->read_header(s)) < 0)
626 s->metadata = s->internal->id3v2_meta;
627 s->internal->id3v2_meta = NULL;
628 } else if (s->internal->id3v2_meta) {
629 int level = AV_LOG_WARNING;
630 if (s->error_recognition & AV_EF_COMPLIANT)
631 level = AV_LOG_ERROR;
632 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
633 av_dict_free(&s->internal->id3v2_meta);
634 if (s->error_recognition & AV_EF_EXPLODE)
635 return AVERROR_INVALIDDATA;
638 if (id3v2_extra_meta) {
639 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
640 !strcmp(s->iformat->name, "tta")) {
641 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
643 if ((ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0)
645 if ((ret = ff_id3v2_parse_priv(s, &id3v2_extra_meta)) < 0)
648 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
650 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
652 if ((ret = avformat_queue_attached_pictures(s)) < 0)
655 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
656 s->internal->data_offset = avio_tell(s->pb);
658 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
660 update_stream_avctx(s);
662 for (i = 0; i < s->nb_streams; i++)
663 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
666 av_dict_free(options);
673 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
675 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
677 avformat_free_context(s);
682 /*******************************************************/
684 static void force_codec_ids(AVFormatContext *s, AVStream *st)
686 switch (st->codecpar->codec_type) {
687 case AVMEDIA_TYPE_VIDEO:
688 if (s->video_codec_id)
689 st->codecpar->codec_id = s->video_codec_id;
691 case AVMEDIA_TYPE_AUDIO:
692 if (s->audio_codec_id)
693 st->codecpar->codec_id = s->audio_codec_id;
695 case AVMEDIA_TYPE_SUBTITLE:
696 if (s->subtitle_codec_id)
697 st->codecpar->codec_id = s->subtitle_codec_id;
699 case AVMEDIA_TYPE_DATA:
700 if (s->data_codec_id)
701 st->codecpar->codec_id = s->data_codec_id;
706 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
708 if (st->request_probe>0) {
709 AVProbeData *pd = &st->probe_data;
711 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
715 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
717 av_log(s, AV_LOG_WARNING,
718 "Failed to reallocate probe buffer for stream %d\n",
723 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
724 pd->buf_size += pkt->size;
725 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
728 st->probe_packets = 0;
730 av_log(s, AV_LOG_WARNING,
731 "nothing to probe for stream %d\n", st->index);
735 end= s->internal->raw_packet_buffer_remaining_size <= 0
736 || st->probe_packets<= 0;
738 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
739 int score = set_codec_from_probe_data(s, st, pd);
740 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
744 st->request_probe = -1;
745 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
746 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
748 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
750 force_codec_ids(s, st);
756 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
758 int64_t ref = pkt->dts;
759 int i, pts_wrap_behavior;
760 int64_t pts_wrap_reference;
761 AVProgram *first_program;
763 if (ref == AV_NOPTS_VALUE)
765 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
767 ref &= (1LL << st->pts_wrap_bits)-1;
769 // reference time stamp should be 60 s before first time stamp
770 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
771 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
772 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
773 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
774 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
776 first_program = av_find_program_from_stream(s, NULL, stream_index);
778 if (!first_program) {
779 int default_stream_index = av_find_default_stream_index(s);
780 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
781 for (i = 0; i < s->nb_streams; i++) {
782 if (av_find_program_from_stream(s, NULL, i))
784 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
785 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
789 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
790 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
794 AVProgram *program = first_program;
796 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
797 pts_wrap_reference = program->pts_wrap_reference;
798 pts_wrap_behavior = program->pts_wrap_behavior;
801 program = av_find_program_from_stream(s, program, stream_index);
804 // update every program with differing pts_wrap_reference
805 program = first_program;
807 if (program->pts_wrap_reference != pts_wrap_reference) {
808 for (i = 0; i<program->nb_stream_indexes; i++) {
809 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
810 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
813 program->pts_wrap_reference = pts_wrap_reference;
814 program->pts_wrap_behavior = pts_wrap_behavior;
816 program = av_find_program_from_stream(s, program, stream_index);
822 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
828 AVPacketList *pktl = s->internal->raw_packet_buffer;
832 st = s->streams[pkt->stream_index];
833 if (s->internal->raw_packet_buffer_remaining_size <= 0)
834 if ((err = probe_codec(s, st, NULL)) < 0)
836 if (st->request_probe <= 0) {
837 s->internal->raw_packet_buffer = pktl->next;
838 s->internal->raw_packet_buffer_remaining_size += pkt->size;
847 ret = s->iformat->read_packet(s, pkt);
849 /* Some demuxers return FFERROR_REDO when they consume
850 data and discard it (ignored streams, junk, extradata).
851 We must re-call the demuxer to get the real packet. */
852 if (ret == FFERROR_REDO)
854 if (!pktl || ret == AVERROR(EAGAIN))
856 for (i = 0; i < s->nb_streams; i++) {
858 if (st->probe_packets || st->request_probe > 0)
859 if ((err = probe_codec(s, st, NULL)) < 0)
861 av_assert0(st->request_probe <= 0);
867 AVPacket tmp = { 0 };
868 ret = av_packet_ref(&tmp, pkt);
874 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
875 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
876 av_log(s, AV_LOG_WARNING,
877 "Dropped corrupted packet (stream = %d)\n",
879 av_packet_unref(pkt);
883 if (pkt->stream_index >= (unsigned)s->nb_streams) {
884 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
888 st = s->streams[pkt->stream_index];
890 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
891 // correct first time stamps to negative values
892 if (!is_relative(st->first_dts))
893 st->first_dts = wrap_timestamp(st, st->first_dts);
894 if (!is_relative(st->start_time))
895 st->start_time = wrap_timestamp(st, st->start_time);
896 if (!is_relative(st->cur_dts))
897 st->cur_dts = wrap_timestamp(st, st->cur_dts);
900 pkt->dts = wrap_timestamp(st, pkt->dts);
901 pkt->pts = wrap_timestamp(st, pkt->pts);
903 force_codec_ids(s, st);
905 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
906 if (s->use_wallclock_as_timestamps)
907 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
909 if (!pktl && st->request_probe <= 0)
912 err = add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
913 &s->internal->raw_packet_buffer_end, 0);
916 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
918 if ((err = probe_codec(s, st, pkt)) < 0)
924 /**********************************************************/
926 static int determinable_frame_size(AVCodecContext *avctx)
928 switch(avctx->codec_id) {
929 case AV_CODEC_ID_MP1:
930 case AV_CODEC_ID_MP2:
931 case AV_CODEC_ID_MP3:
939 * Return the frame duration in seconds. Return 0 if not available.
941 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
942 AVCodecParserContext *pc, AVPacket *pkt)
944 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
945 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
946 int frame_size, sample_rate;
948 #if FF_API_LAVF_AVCTX
949 FF_DISABLE_DEPRECATION_WARNINGS
950 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
951 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
952 FF_ENABLE_DEPRECATION_WARNINGS
957 switch (st->codecpar->codec_type) {
958 case AVMEDIA_TYPE_VIDEO:
959 if (st->r_frame_rate.num && !pc && s->iformat) {
960 *pnum = st->r_frame_rate.den;
961 *pden = st->r_frame_rate.num;
962 } else if (st->time_base.num * 1000LL > st->time_base.den) {
963 *pnum = st->time_base.num;
964 *pden = st->time_base.den;
965 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
966 av_assert0(st->internal->avctx->ticks_per_frame);
967 av_reduce(pnum, pden,
969 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
972 if (pc && pc->repeat_pict) {
973 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
974 av_reduce(pnum, pden,
975 (*pnum) * (1LL + pc->repeat_pict),
979 /* If this codec can be interlaced or progressive then we need
980 * a parser to compute duration of a packet. Thus if we have
981 * no parser in such case leave duration undefined. */
982 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
986 case AVMEDIA_TYPE_AUDIO:
987 if (st->internal->avctx_inited) {
988 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
989 sample_rate = st->internal->avctx->sample_rate;
991 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
992 sample_rate = st->codecpar->sample_rate;
994 if (frame_size <= 0 || sample_rate <= 0)
1004 static int is_intra_only(enum AVCodecID id)
1006 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1009 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1014 static int has_decode_delay_been_guessed(AVStream *st)
1016 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1017 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1019 #if CONFIG_H264_DECODER
1020 if (st->internal->avctx->has_b_frames &&
1021 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1024 if (st->internal->avctx->has_b_frames<3)
1025 return st->nb_decoded_frames >= 7;
1026 else if (st->internal->avctx->has_b_frames<4)
1027 return st->nb_decoded_frames >= 18;
1029 return st->nb_decoded_frames >= 20;
1032 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1036 if (pktl == s->internal->packet_buffer_end)
1037 return s->internal->parse_queue;
1041 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1042 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1043 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1046 int delay = st->internal->avctx->has_b_frames;
1049 if (dts == AV_NOPTS_VALUE) {
1050 int64_t best_score = INT64_MAX;
1051 for (i = 0; i<delay; i++) {
1052 if (st->pts_reorder_error_count[i]) {
1053 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1054 if (score < best_score) {
1056 dts = pts_buffer[i];
1061 for (i = 0; i<delay; i++) {
1062 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1063 int64_t diff = FFABS(pts_buffer[i] - dts)
1064 + (uint64_t)st->pts_reorder_error[i];
1065 diff = FFMAX(diff, st->pts_reorder_error[i]);
1066 st->pts_reorder_error[i] = diff;
1067 st->pts_reorder_error_count[i]++;
1068 if (st->pts_reorder_error_count[i] > 250) {
1069 st->pts_reorder_error[i] >>= 1;
1070 st->pts_reorder_error_count[i] >>= 1;
1077 if (dts == AV_NOPTS_VALUE)
1078 dts = pts_buffer[0];
1084 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1085 * of the packets in a window.
1087 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1088 AVPacketList *pkt_buffer)
1090 AVStream *st = s->streams[stream_index];
1091 int delay = st->internal->avctx->has_b_frames;
1094 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1096 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1097 pts_buffer[i] = AV_NOPTS_VALUE;
1099 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1100 if (pkt_buffer->pkt.stream_index != stream_index)
1103 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1104 pts_buffer[0] = pkt_buffer->pkt.pts;
1105 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1106 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1108 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1113 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1114 int64_t dts, int64_t pts, AVPacket *pkt)
1116 AVStream *st = s->streams[stream_index];
1117 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1118 AVPacketList *pktl_it;
1122 if (st->first_dts != AV_NOPTS_VALUE ||
1123 dts == AV_NOPTS_VALUE ||
1124 st->cur_dts == AV_NOPTS_VALUE ||
1128 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1130 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1132 if (is_relative(pts))
1135 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1136 if (pktl_it->pkt.stream_index != stream_index)
1138 if (is_relative(pktl_it->pkt.pts))
1139 pktl_it->pkt.pts += shift;
1141 if (is_relative(pktl_it->pkt.dts))
1142 pktl_it->pkt.dts += shift;
1144 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1145 st->start_time = pktl_it->pkt.pts;
1146 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1147 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1151 if (has_decode_delay_been_guessed(st)) {
1152 update_dts_from_pts(s, stream_index, pktl);
1155 if (st->start_time == AV_NOPTS_VALUE) {
1156 st->start_time = pts;
1157 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1158 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1162 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1163 int stream_index, int duration)
1165 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1166 int64_t cur_dts = RELATIVE_TS_BASE;
1168 if (st->first_dts != AV_NOPTS_VALUE) {
1169 if (st->update_initial_durations_done)
1171 st->update_initial_durations_done = 1;
1172 cur_dts = st->first_dts;
1173 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1174 if (pktl->pkt.stream_index == stream_index) {
1175 if (pktl->pkt.pts != pktl->pkt.dts ||
1176 pktl->pkt.dts != AV_NOPTS_VALUE ||
1179 cur_dts -= duration;
1182 if (pktl && pktl->pkt.dts != st->first_dts) {
1183 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1184 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1188 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1191 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1192 st->first_dts = cur_dts;
1193 } else if (st->cur_dts != RELATIVE_TS_BASE)
1196 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1197 if (pktl->pkt.stream_index != stream_index)
1199 if ((pktl->pkt.pts == pktl->pkt.dts ||
1200 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1201 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1202 pktl->pkt.dts == st->first_dts ||
1203 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1204 !pktl->pkt.duration) {
1205 pktl->pkt.dts = cur_dts;
1206 if (!st->internal->avctx->has_b_frames)
1207 pktl->pkt.pts = cur_dts;
1208 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1209 pktl->pkt.duration = duration;
1212 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1215 st->cur_dts = cur_dts;
1218 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1219 AVCodecParserContext *pc, AVPacket *pkt,
1220 int64_t next_dts, int64_t next_pts)
1222 int num, den, presentation_delayed, delay, i;
1224 AVRational duration;
1225 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1226 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1228 if (s->flags & AVFMT_FLAG_NOFILLIN)
1231 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1232 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1233 if (st->last_dts_for_order_check <= pkt->dts) {
1236 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1237 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1239 st->last_dts_for_order_check);
1240 st->dts_misordered++;
1242 if (st->dts_ordered + st->dts_misordered > 250) {
1243 st->dts_ordered >>= 1;
1244 st->dts_misordered >>= 1;
1248 st->last_dts_for_order_check = pkt->dts;
1249 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1250 pkt->dts = AV_NOPTS_VALUE;
1253 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1254 pkt->dts = AV_NOPTS_VALUE;
1256 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1257 && !st->internal->avctx->has_b_frames)
1258 //FIXME Set low_delay = 0 when has_b_frames = 1
1259 st->internal->avctx->has_b_frames = 1;
1261 /* do we have a video B-frame ? */
1262 delay = st->internal->avctx->has_b_frames;
1263 presentation_delayed = 0;
1265 /* XXX: need has_b_frame, but cannot get it if the codec is
1266 * not initialized */
1268 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1269 presentation_delayed = 1;
1271 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1272 st->pts_wrap_bits < 63 &&
1273 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1274 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1275 pkt->dts -= 1LL << st->pts_wrap_bits;
1277 pkt->pts += 1LL << st->pts_wrap_bits;
1280 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1281 * We take the conservative approach and discard both.
1282 * Note: If this is misbehaving for an H.264 file, then possibly
1283 * presentation_delayed is not set correctly. */
1284 if (delay == 1 && pkt->dts == pkt->pts &&
1285 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1286 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1287 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1288 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1289 pkt->dts = AV_NOPTS_VALUE;
1292 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1293 if (pkt->duration == 0) {
1294 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1296 duration = (AVRational) {num, den};
1297 pkt->duration = av_rescale_rnd(1,
1298 num * (int64_t) st->time_base.den,
1299 den * (int64_t) st->time_base.num,
1304 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1305 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1307 /* Correct timestamps with byte offset if demuxers only have timestamps
1308 * on packet boundaries */
1309 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1310 /* this will estimate bitrate based on this frame's duration and size */
1311 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1312 if (pkt->pts != AV_NOPTS_VALUE)
1314 if (pkt->dts != AV_NOPTS_VALUE)
1318 /* This may be redundant, but it should not hurt. */
1319 if (pkt->dts != AV_NOPTS_VALUE &&
1320 pkt->pts != AV_NOPTS_VALUE &&
1321 pkt->pts > pkt->dts)
1322 presentation_delayed = 1;
1324 if (s->debug & FF_FDEBUG_TS)
1325 av_log(s, AV_LOG_TRACE,
1326 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1327 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1328 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1330 /* Interpolate PTS and DTS if they are not present. We skip H264
1331 * currently because delay and has_b_frames are not reliably set. */
1332 if ((delay == 0 || (delay == 1 && pc)) &&
1334 if (presentation_delayed) {
1335 /* DTS = decompression timestamp */
1336 /* PTS = presentation timestamp */
1337 if (pkt->dts == AV_NOPTS_VALUE)
1338 pkt->dts = st->last_IP_pts;
1339 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1340 if (pkt->dts == AV_NOPTS_VALUE)
1341 pkt->dts = st->cur_dts;
1343 /* This is tricky: the dts must be incremented by the duration
1344 * of the frame we are displaying, i.e. the last I- or P-frame. */
1345 if (st->last_IP_duration == 0)
1346 st->last_IP_duration = pkt->duration;
1347 if (pkt->dts != AV_NOPTS_VALUE)
1348 st->cur_dts = pkt->dts + st->last_IP_duration;
1349 if (pkt->dts != AV_NOPTS_VALUE &&
1350 pkt->pts == AV_NOPTS_VALUE &&
1351 st->last_IP_duration > 0 &&
1352 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1353 next_dts != next_pts &&
1354 next_pts != AV_NOPTS_VALUE)
1355 pkt->pts = next_dts;
1357 st->last_IP_duration = pkt->duration;
1358 st->last_IP_pts = pkt->pts;
1359 /* Cannot compute PTS if not present (we can compute it only
1360 * by knowing the future. */
1361 } else if (pkt->pts != AV_NOPTS_VALUE ||
1362 pkt->dts != AV_NOPTS_VALUE ||
1365 /* presentation is not delayed : PTS and DTS are the same */
1366 if (pkt->pts == AV_NOPTS_VALUE)
1367 pkt->pts = pkt->dts;
1368 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1370 if (pkt->pts == AV_NOPTS_VALUE)
1371 pkt->pts = st->cur_dts;
1372 pkt->dts = pkt->pts;
1373 if (pkt->pts != AV_NOPTS_VALUE)
1374 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1378 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1379 st->pts_buffer[0] = pkt->pts;
1380 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1381 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1383 if(has_decode_delay_been_guessed(st))
1384 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1386 // We skipped it above so we try here.
1388 // This should happen on the first packet
1389 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1390 if (pkt->dts > st->cur_dts)
1391 st->cur_dts = pkt->dts;
1393 if (s->debug & FF_FDEBUG_TS)
1394 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1395 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1398 if (is_intra_only(st->codecpar->codec_id))
1399 pkt->flags |= AV_PKT_FLAG_KEY;
1400 #if FF_API_CONVERGENCE_DURATION
1401 FF_DISABLE_DEPRECATION_WARNINGS
1403 pkt->convergence_duration = pc->convergence_duration;
1404 FF_ENABLE_DEPRECATION_WARNINGS
1408 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1411 AVPacketList *pktl = *pkt_buf;
1412 *pkt_buf = pktl->next;
1413 av_packet_unref(&pktl->pkt);
1416 *pkt_buf_end = NULL;
1420 * Parse a packet, add all split parts to parse_queue.
1422 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1424 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1426 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1427 AVStream *st = s->streams[stream_index];
1428 uint8_t *data = pkt ? pkt->data : NULL;
1429 int size = pkt ? pkt->size : 0;
1430 int ret = 0, got_output = 0;
1433 av_init_packet(&flush_pkt);
1436 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1437 // preserve 0-size sync packets
1438 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1441 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1443 int64_t next_pts = pkt->pts;
1444 int64_t next_dts = pkt->dts;
1446 av_init_packet(&out_pkt);
1447 len = av_parser_parse2(st->parser, st->internal->avctx,
1448 &out_pkt.data, &out_pkt.size, data, size,
1449 pkt->pts, pkt->dts, pkt->pos);
1451 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1453 /* increment read pointer */
1457 got_output = !!out_pkt.size;
1462 if (pkt->side_data) {
1463 out_pkt.side_data = pkt->side_data;
1464 out_pkt.side_data_elems = pkt->side_data_elems;
1465 pkt->side_data = NULL;
1466 pkt->side_data_elems = 0;
1469 /* set the duration */
1470 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1471 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1472 if (st->internal->avctx->sample_rate > 0) {
1474 av_rescale_q_rnd(st->parser->duration,
1475 (AVRational) { 1, st->internal->avctx->sample_rate },
1481 out_pkt.stream_index = st->index;
1482 out_pkt.pts = st->parser->pts;
1483 out_pkt.dts = st->parser->dts;
1484 out_pkt.pos = st->parser->pos;
1485 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1487 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1488 out_pkt.pos = st->parser->frame_offset;
1490 if (st->parser->key_frame == 1 ||
1491 (st->parser->key_frame == -1 &&
1492 st->parser->pict_type == AV_PICTURE_TYPE_I))
1493 out_pkt.flags |= AV_PKT_FLAG_KEY;
1495 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1496 out_pkt.flags |= AV_PKT_FLAG_KEY;
1498 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1500 ret = add_to_pktbuf(&s->internal->parse_queue, &out_pkt,
1501 &s->internal->parse_queue_end, 1);
1502 av_packet_unref(&out_pkt);
1507 /* end of the stream => close and free the parser */
1508 if (pkt == &flush_pkt) {
1509 av_parser_close(st->parser);
1514 av_packet_unref(pkt);
1518 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1519 AVPacketList **pkt_buffer_end,
1523 av_assert0(*pkt_buffer);
1526 *pkt_buffer = pktl->next;
1528 *pkt_buffer_end = NULL;
1533 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1535 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1538 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1540 int ret = 0, i, got_packet = 0;
1541 AVDictionary *metadata = NULL;
1543 av_init_packet(pkt);
1545 while (!got_packet && !s->internal->parse_queue) {
1549 /* read next packet */
1550 ret = ff_read_packet(s, &cur_pkt);
1552 if (ret == AVERROR(EAGAIN))
1554 /* flush the parsers */
1555 for (i = 0; i < s->nb_streams; i++) {
1557 if (st->parser && st->need_parsing)
1558 parse_packet(s, NULL, st->index);
1560 /* all remaining packets are now in parse_queue =>
1561 * really terminate parsing */
1565 st = s->streams[cur_pkt.stream_index];
1567 /* update context if required */
1568 if (st->internal->need_context_update) {
1569 if (avcodec_is_open(st->internal->avctx)) {
1570 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1571 avcodec_close(st->internal->avctx);
1572 st->info->found_decoder = 0;
1575 /* close parser, because it depends on the codec */
1576 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1577 av_parser_close(st->parser);
1581 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1585 #if FF_API_LAVF_AVCTX
1586 FF_DISABLE_DEPRECATION_WARNINGS
1587 /* update deprecated public codec context */
1588 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1591 FF_ENABLE_DEPRECATION_WARNINGS
1594 st->internal->need_context_update = 0;
1597 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1598 cur_pkt.dts != AV_NOPTS_VALUE &&
1599 cur_pkt.pts < cur_pkt.dts) {
1600 av_log(s, AV_LOG_WARNING,
1601 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1602 cur_pkt.stream_index,
1603 av_ts2str(cur_pkt.pts),
1604 av_ts2str(cur_pkt.dts),
1607 if (s->debug & FF_FDEBUG_TS)
1608 av_log(s, AV_LOG_DEBUG,
1609 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1610 cur_pkt.stream_index,
1611 av_ts2str(cur_pkt.pts),
1612 av_ts2str(cur_pkt.dts),
1613 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1615 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1616 st->parser = av_parser_init(st->codecpar->codec_id);
1618 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1619 "%s, packets or times may be invalid.\n",
1620 avcodec_get_name(st->codecpar->codec_id));
1621 /* no parser available: just output the raw packets */
1622 st->need_parsing = AVSTREAM_PARSE_NONE;
1623 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1624 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1625 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1626 st->parser->flags |= PARSER_FLAG_ONCE;
1627 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1628 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1631 if (!st->need_parsing || !st->parser) {
1632 /* no parsing needed: we just output the packet as is */
1634 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1635 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1636 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1637 ff_reduce_index(s, st->index);
1638 av_add_index_entry(st, pkt->pos, pkt->dts,
1639 0, 0, AVINDEX_KEYFRAME);
1642 } else if (st->discard < AVDISCARD_ALL) {
1643 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1645 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1646 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1647 st->codecpar->channels = st->internal->avctx->channels;
1648 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1649 st->codecpar->codec_id = st->internal->avctx->codec_id;
1652 av_packet_unref(&cur_pkt);
1654 if (pkt->flags & AV_PKT_FLAG_KEY)
1655 st->skip_to_keyframe = 0;
1656 if (st->skip_to_keyframe) {
1657 av_packet_unref(&cur_pkt);
1665 if (!got_packet && s->internal->parse_queue)
1666 ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1669 AVStream *st = s->streams[pkt->stream_index];
1670 int discard_padding = 0;
1671 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1672 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1673 int64_t sample = ts_to_samples(st, pts);
1674 int duration = ts_to_samples(st, pkt->duration);
1675 int64_t end_sample = sample + duration;
1676 if (duration > 0 && end_sample >= st->first_discard_sample &&
1677 sample < st->last_discard_sample)
1678 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1680 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1681 st->skip_samples = st->start_skip_samples;
1682 if (st->skip_samples || discard_padding) {
1683 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1685 AV_WL32(p, st->skip_samples);
1686 AV_WL32(p + 4, discard_padding);
1687 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1689 st->skip_samples = 0;
1692 if (st->inject_global_side_data) {
1693 for (i = 0; i < st->nb_side_data; i++) {
1694 AVPacketSideData *src_sd = &st->side_data[i];
1697 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1700 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1702 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1706 memcpy(dst_data, src_sd->data, src_sd->size);
1708 st->inject_global_side_data = 0;
1712 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1714 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1715 av_dict_copy(&s->metadata, metadata, 0);
1716 av_dict_free(&metadata);
1717 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1720 #if FF_API_LAVF_AVCTX
1721 update_stream_avctx(s);
1724 if (s->debug & FF_FDEBUG_TS)
1725 av_log(s, AV_LOG_DEBUG,
1726 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1727 "size=%d, duration=%"PRId64", flags=%d\n",
1729 av_ts2str(pkt->pts),
1730 av_ts2str(pkt->dts),
1731 pkt->size, pkt->duration, pkt->flags);
1736 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1738 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1744 ret = s->internal->packet_buffer
1745 ? read_from_packet_buffer(&s->internal->packet_buffer,
1746 &s->internal->packet_buffer_end, pkt)
1747 : read_frame_internal(s, pkt);
1754 AVPacketList *pktl = s->internal->packet_buffer;
1757 AVPacket *next_pkt = &pktl->pkt;
1759 if (next_pkt->dts != AV_NOPTS_VALUE) {
1760 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1761 // last dts seen for this stream. if any of packets following
1762 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1763 int64_t last_dts = next_pkt->dts;
1764 av_assert2(wrap_bits <= 64);
1765 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1766 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1767 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1768 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1770 next_pkt->pts = pktl->pkt.dts;
1772 if (last_dts != AV_NOPTS_VALUE) {
1773 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1774 last_dts = pktl->pkt.dts;
1779 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1780 // Fixing the last reference frame had none pts issue (For MXF etc).
1781 // We only do this when
1783 // 2. we are not able to resolve a pts value for current packet.
1784 // 3. the packets for this stream at the end of the files had valid dts.
1785 next_pkt->pts = last_dts + next_pkt->duration;
1787 pktl = s->internal->packet_buffer;
1790 /* read packet from packet buffer, if there is data */
1791 st = s->streams[next_pkt->stream_index];
1792 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1793 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1794 ret = read_from_packet_buffer(&s->internal->packet_buffer,
1795 &s->internal->packet_buffer_end, pkt);
1800 ret = read_frame_internal(s, pkt);
1802 if (pktl && ret != AVERROR(EAGAIN)) {
1809 ret = add_to_pktbuf(&s->internal->packet_buffer, pkt,
1810 &s->internal->packet_buffer_end, 1);
1811 av_packet_unref(pkt);
1818 st = s->streams[pkt->stream_index];
1819 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1820 ff_reduce_index(s, st->index);
1821 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1824 if (is_relative(pkt->dts))
1825 pkt->dts -= RELATIVE_TS_BASE;
1826 if (is_relative(pkt->pts))
1827 pkt->pts -= RELATIVE_TS_BASE;
1832 /* XXX: suppress the packet queue */
1833 static void flush_packet_queue(AVFormatContext *s)
1837 free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
1838 free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1839 free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1841 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1844 /*******************************************************/
1847 int av_find_default_stream_index(AVFormatContext *s)
1851 int best_stream = 0;
1852 int best_score = INT_MIN;
1854 if (s->nb_streams <= 0)
1856 for (i = 0; i < s->nb_streams; i++) {
1859 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1860 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1862 if (st->codecpar->width && st->codecpar->height)
1866 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1867 if (st->codecpar->sample_rate)
1870 if (st->codec_info_nb_frames)
1873 if (st->discard != AVDISCARD_ALL)
1876 if (score > best_score) {
1884 /** Flush the frame reader. */
1885 void ff_read_frame_flush(AVFormatContext *s)
1890 flush_packet_queue(s);
1892 /* Reset read state for each stream. */
1893 for (i = 0; i < s->nb_streams; i++) {
1897 av_parser_close(st->parser);
1900 st->last_IP_pts = AV_NOPTS_VALUE;
1901 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1902 if (st->first_dts == AV_NOPTS_VALUE)
1903 st->cur_dts = RELATIVE_TS_BASE;
1905 /* We set the current DTS to an unspecified origin. */
1906 st->cur_dts = AV_NOPTS_VALUE;
1908 st->probe_packets = MAX_PROBE_PACKETS;
1910 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1911 st->pts_buffer[j] = AV_NOPTS_VALUE;
1913 if (s->internal->inject_global_side_data)
1914 st->inject_global_side_data = 1;
1916 st->skip_samples = 0;
1920 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1924 for (i = 0; i < s->nb_streams; i++) {
1925 AVStream *st = s->streams[i];
1928 av_rescale(timestamp,
1929 st->time_base.den * (int64_t) ref_st->time_base.num,
1930 st->time_base.num * (int64_t) ref_st->time_base.den);
1934 void ff_reduce_index(AVFormatContext *s, int stream_index)
1936 AVStream *st = s->streams[stream_index];
1937 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1939 if ((unsigned) st->nb_index_entries >= max_entries) {
1941 for (i = 0; 2 * i < st->nb_index_entries; i++)
1942 st->index_entries[i] = st->index_entries[2 * i];
1943 st->nb_index_entries = i;
1947 int ff_add_index_entry(AVIndexEntry **index_entries,
1948 int *nb_index_entries,
1949 unsigned int *index_entries_allocated_size,
1950 int64_t pos, int64_t timestamp,
1951 int size, int distance, int flags)
1953 AVIndexEntry *entries, *ie;
1956 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1959 if (timestamp == AV_NOPTS_VALUE)
1960 return AVERROR(EINVAL);
1962 if (size < 0 || size > 0x3FFFFFFF)
1963 return AVERROR(EINVAL);
1965 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1966 timestamp -= RELATIVE_TS_BASE;
1968 entries = av_fast_realloc(*index_entries,
1969 index_entries_allocated_size,
1970 (*nb_index_entries + 1) *
1971 sizeof(AVIndexEntry));
1975 *index_entries = entries;
1977 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1978 timestamp, AVSEEK_FLAG_ANY);
1981 index = (*nb_index_entries)++;
1982 ie = &entries[index];
1983 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1985 ie = &entries[index];
1986 if (ie->timestamp != timestamp) {
1987 if (ie->timestamp <= timestamp)
1989 memmove(entries + index + 1, entries + index,
1990 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1991 (*nb_index_entries)++;
1992 } else if (ie->pos == pos && distance < ie->min_distance)
1993 // do not reduce the distance
1994 distance = ie->min_distance;
1998 ie->timestamp = timestamp;
1999 ie->min_distance = distance;
2006 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2007 int size, int distance, int flags)
2009 timestamp = wrap_timestamp(st, timestamp);
2010 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2011 &st->index_entries_allocated_size, pos,
2012 timestamp, size, distance, flags);
2015 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2016 int64_t wanted_timestamp, int flags)
2024 // Optimize appending index entries at the end.
2025 if (b && entries[b - 1].timestamp < wanted_timestamp)
2031 // Search for the next non-discarded packet.
2032 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2034 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2040 timestamp = entries[m].timestamp;
2041 if (timestamp >= wanted_timestamp)
2043 if (timestamp <= wanted_timestamp)
2046 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2048 if (!(flags & AVSEEK_FLAG_ANY))
2049 while (m >= 0 && m < nb_entries &&
2050 !(entries[m].flags & AVINDEX_KEYFRAME))
2051 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2053 if (m == nb_entries)
2058 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2061 int64_t pos_delta = 0;
2063 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2064 const char *proto = avio_find_protocol_name(s->url);
2067 av_log(s, AV_LOG_INFO,
2068 "Protocol name not provided, cannot determine if input is local or "
2069 "a network protocol, buffers and access patterns cannot be configured "
2070 "optimally without knowing the protocol\n");
2073 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2076 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2077 AVStream *st1 = s->streams[ist1];
2078 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2079 AVStream *st2 = s->streams[ist2];
2085 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2086 AVIndexEntry *e1 = &st1->index_entries[i1];
2087 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2089 skip = FFMAX(skip, e1->size);
2090 for (; i2 < st2->nb_index_entries; i2++) {
2091 AVIndexEntry *e2 = &st2->index_entries[i2];
2092 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2093 if (e2_pts - e1_pts < time_tolerance)
2095 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2103 /* XXX This could be adjusted depending on protocol*/
2104 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2105 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2106 ffio_set_buf_size(s->pb, pos_delta);
2107 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2110 if (skip < (1<<23)) {
2111 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2115 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2117 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2118 wanted_timestamp, flags);
2121 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2122 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2124 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2125 if (stream_index >= 0)
2126 ts = wrap_timestamp(s->streams[stream_index], ts);
2130 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2131 int64_t target_ts, int flags)
2133 AVInputFormat *avif = s->iformat;
2134 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2135 int64_t ts_min, ts_max, ts;
2140 if (stream_index < 0)
2143 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2146 ts_min = AV_NOPTS_VALUE;
2147 pos_limit = -1; // GCC falsely says it may be uninitialized.
2149 st = s->streams[stream_index];
2150 if (st->index_entries) {
2153 /* FIXME: Whole function must be checked for non-keyframe entries in
2154 * index case, especially read_timestamp(). */
2155 index = av_index_search_timestamp(st, target_ts,
2156 flags | AVSEEK_FLAG_BACKWARD);
2157 index = FFMAX(index, 0);
2158 e = &st->index_entries[index];
2160 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2162 ts_min = e->timestamp;
2163 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2164 pos_min, av_ts2str(ts_min));
2166 av_assert1(index == 0);
2169 index = av_index_search_timestamp(st, target_ts,
2170 flags & ~AVSEEK_FLAG_BACKWARD);
2171 av_assert0(index < st->nb_index_entries);
2173 e = &st->index_entries[index];
2174 av_assert1(e->timestamp >= target_ts);
2176 ts_max = e->timestamp;
2177 pos_limit = pos_max - e->min_distance;
2178 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2179 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2183 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2184 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2189 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2192 ff_read_frame_flush(s);
2193 ff_update_cur_dts(s, st, ts);
2198 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2199 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2201 int64_t step = 1024;
2202 int64_t limit, ts_max;
2203 int64_t filesize = avio_size(s->pb);
2204 int64_t pos_max = filesize - 1;
2207 pos_max = FFMAX(0, (pos_max) - step);
2208 ts_max = ff_read_timestamp(s, stream_index,
2209 &pos_max, limit, read_timestamp);
2211 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2212 if (ts_max == AV_NOPTS_VALUE)
2216 int64_t tmp_pos = pos_max + 1;
2217 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2218 &tmp_pos, INT64_MAX, read_timestamp);
2219 if (tmp_ts == AV_NOPTS_VALUE)
2221 av_assert0(tmp_pos > pos_max);
2224 if (tmp_pos >= filesize)
2236 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2237 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2238 int64_t ts_min, int64_t ts_max,
2239 int flags, int64_t *ts_ret,
2240 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2241 int64_t *, int64_t))
2248 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2250 if (ts_min == AV_NOPTS_VALUE) {
2251 pos_min = s->internal->data_offset;
2252 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2253 if (ts_min == AV_NOPTS_VALUE)
2257 if (ts_min >= target_ts) {
2262 if (ts_max == AV_NOPTS_VALUE) {
2263 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2265 pos_limit = pos_max;
2268 if (ts_max <= target_ts) {
2273 av_assert0(ts_min < ts_max);
2276 while (pos_min < pos_limit) {
2277 av_log(s, AV_LOG_TRACE,
2278 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2279 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2280 av_assert0(pos_limit <= pos_max);
2282 if (no_change == 0) {
2283 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2284 // interpolate position (better than dichotomy)
2285 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2287 pos_min - approximate_keyframe_distance;
2288 } else if (no_change == 1) {
2289 // bisection if interpolation did not change min / max pos last time
2290 pos = (pos_min + pos_limit) >> 1;
2292 /* linear search if bisection failed, can only happen if there
2293 * are very few or no keyframes between min/max */
2298 else if (pos > pos_limit)
2302 // May pass pos_limit instead of -1.
2303 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2308 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2309 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2310 pos_min, pos, pos_max,
2311 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2312 pos_limit, start_pos, no_change);
2313 if (ts == AV_NOPTS_VALUE) {
2314 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2317 if (target_ts <= ts) {
2318 pos_limit = start_pos - 1;
2322 if (target_ts >= ts) {
2328 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2329 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2332 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2334 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2335 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2336 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2342 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2343 int64_t pos, int flags)
2345 int64_t pos_min, pos_max;
2347 pos_min = s->internal->data_offset;
2348 pos_max = avio_size(s->pb) - 1;
2352 else if (pos > pos_max)
2355 avio_seek(s->pb, pos, SEEK_SET);
2357 s->io_repositioned = 1;
2362 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2363 int64_t timestamp, int flags)
2370 st = s->streams[stream_index];
2372 index = av_index_search_timestamp(st, timestamp, flags);
2374 if (index < 0 && st->nb_index_entries &&
2375 timestamp < st->index_entries[0].timestamp)
2378 if (index < 0 || index == st->nb_index_entries - 1) {
2382 if (st->nb_index_entries) {
2383 av_assert0(st->index_entries);
2384 ie = &st->index_entries[st->nb_index_entries - 1];
2385 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2387 ff_update_cur_dts(s, st, ie->timestamp);
2389 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2395 read_status = av_read_frame(s, &pkt);
2396 } while (read_status == AVERROR(EAGAIN));
2397 if (read_status < 0)
2399 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2400 if (pkt.flags & AV_PKT_FLAG_KEY) {
2401 av_packet_unref(&pkt);
2404 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2405 av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
2406 av_packet_unref(&pkt);
2410 av_packet_unref(&pkt);
2412 index = av_index_search_timestamp(st, timestamp, flags);
2417 ff_read_frame_flush(s);
2418 if (s->iformat->read_seek)
2419 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2421 ie = &st->index_entries[index];
2422 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2424 ff_update_cur_dts(s, st, ie->timestamp);
2429 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2430 int64_t timestamp, int flags)
2435 if (flags & AVSEEK_FLAG_BYTE) {
2436 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2438 ff_read_frame_flush(s);
2439 return seek_frame_byte(s, stream_index, timestamp, flags);
2442 if (stream_index < 0) {
2443 stream_index = av_find_default_stream_index(s);
2444 if (stream_index < 0)
2447 st = s->streams[stream_index];
2448 /* timestamp for default must be expressed in AV_TIME_BASE units */
2449 timestamp = av_rescale(timestamp, st->time_base.den,
2450 AV_TIME_BASE * (int64_t) st->time_base.num);
2453 /* first, we try the format specific seek */
2454 if (s->iformat->read_seek) {
2455 ff_read_frame_flush(s);
2456 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2462 if (s->iformat->read_timestamp &&
2463 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2464 ff_read_frame_flush(s);
2465 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2466 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2467 ff_read_frame_flush(s);
2468 return seek_frame_generic(s, stream_index, timestamp, flags);
2473 int av_seek_frame(AVFormatContext *s, int stream_index,
2474 int64_t timestamp, int flags)
2478 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2479 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2480 if ((flags & AVSEEK_FLAG_BACKWARD))
2484 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2485 flags & ~AVSEEK_FLAG_BACKWARD);
2488 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2491 ret = avformat_queue_attached_pictures(s);
2496 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2497 int64_t ts, int64_t max_ts, int flags)
2499 if (min_ts > ts || max_ts < ts)
2501 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2502 return AVERROR(EINVAL);
2505 flags |= AVSEEK_FLAG_ANY;
2506 flags &= ~AVSEEK_FLAG_BACKWARD;
2508 if (s->iformat->read_seek2) {
2510 ff_read_frame_flush(s);
2512 if (stream_index == -1 && s->nb_streams == 1) {
2513 AVRational time_base = s->streams[0]->time_base;
2514 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2515 min_ts = av_rescale_rnd(min_ts, time_base.den,
2516 time_base.num * (int64_t)AV_TIME_BASE,
2517 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2518 max_ts = av_rescale_rnd(max_ts, time_base.den,
2519 time_base.num * (int64_t)AV_TIME_BASE,
2520 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2524 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2528 ret = avformat_queue_attached_pictures(s);
2532 if (s->iformat->read_timestamp) {
2533 // try to seek via read_timestamp()
2536 // Fall back on old API if new is not implemented but old is.
2537 // Note the old API has somewhat different semantics.
2538 if (s->iformat->read_seek || 1) {
2539 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2540 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2541 if (ret<0 && ts != min_ts && max_ts != ts) {
2542 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2544 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2549 // try some generic seek like seek_frame_generic() but with new ts semantics
2550 return -1; //unreachable
2553 int avformat_flush(AVFormatContext *s)
2555 ff_read_frame_flush(s);
2559 /*******************************************************/
2562 * Return TRUE if the stream has accurate duration in any stream.
2564 * @return TRUE if the stream has accurate duration for at least one component.
2566 static int has_duration(AVFormatContext *ic)
2571 for (i = 0; i < ic->nb_streams; i++) {
2572 st = ic->streams[i];
2573 if (st->duration != AV_NOPTS_VALUE)
2576 if (ic->duration != AV_NOPTS_VALUE)
2582 * Estimate the stream timings from the one of each components.
2584 * Also computes the global bitrate if possible.
2586 static void update_stream_timings(AVFormatContext *ic)
2588 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2589 int64_t duration, duration1, filesize;
2594 start_time = INT64_MAX;
2595 start_time_text = INT64_MAX;
2596 end_time = INT64_MIN;
2597 end_time_text = INT64_MIN;
2598 duration = INT64_MIN;
2599 for (i = 0; i < ic->nb_streams; i++) {
2600 st = ic->streams[i];
2601 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2602 start_time1 = av_rescale_q(st->start_time, st->time_base,
2604 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2605 if (start_time1 < start_time_text)
2606 start_time_text = start_time1;
2608 start_time = FFMIN(start_time, start_time1);
2609 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2611 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2612 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2613 end_time1 += start_time1;
2614 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2615 end_time_text = FFMAX(end_time_text, end_time1);
2617 end_time = FFMAX(end_time, end_time1);
2619 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2620 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2621 p->start_time = start_time1;
2622 if (p->end_time < end_time1)
2623 p->end_time = end_time1;
2626 if (st->duration != AV_NOPTS_VALUE) {
2627 duration1 = av_rescale_q(st->duration, st->time_base,
2629 duration = FFMAX(duration, duration1);
2632 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2633 start_time = start_time_text;
2634 else if (start_time > start_time_text)
2635 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2637 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - end_time < AV_TIME_BASE)) {
2638 end_time = end_time_text;
2639 } else if (end_time < end_time_text) {
2640 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2643 if (start_time != INT64_MAX) {
2644 ic->start_time = start_time;
2645 if (end_time != INT64_MIN) {
2646 if (ic->nb_programs > 1) {
2647 for (i = 0; i < ic->nb_programs; i++) {
2648 p = ic->programs[i];
2649 if (p->start_time != AV_NOPTS_VALUE &&
2650 p->end_time > p->start_time &&
2651 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2652 duration = FFMAX(duration, p->end_time - p->start_time);
2654 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2655 duration = FFMAX(duration, end_time - start_time);
2659 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2660 ic->duration = duration;
2662 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2663 /* compute the bitrate */
2664 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2665 (double) ic->duration;
2666 if (bitrate >= 0 && bitrate <= INT64_MAX)
2667 ic->bit_rate = bitrate;
2671 static void fill_all_stream_timings(AVFormatContext *ic)
2676 update_stream_timings(ic);
2677 for (i = 0; i < ic->nb_streams; i++) {
2678 st = ic->streams[i];
2679 if (st->start_time == AV_NOPTS_VALUE) {
2680 if (ic->start_time != AV_NOPTS_VALUE)
2681 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2683 if (ic->duration != AV_NOPTS_VALUE)
2684 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2690 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2692 int64_t filesize, duration;
2693 int i, show_warning = 0;
2696 /* if bit_rate is already set, we believe it */
2697 if (ic->bit_rate <= 0) {
2698 int64_t bit_rate = 0;
2699 for (i = 0; i < ic->nb_streams; i++) {
2700 st = ic->streams[i];
2701 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2702 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2703 if (st->codecpar->bit_rate > 0) {
2704 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2708 bit_rate += st->codecpar->bit_rate;
2709 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2710 // If we have a videostream with packets but without a bitrate
2711 // then consider the sum not known
2716 ic->bit_rate = bit_rate;
2719 /* if duration is already set, we believe it */
2720 if (ic->duration == AV_NOPTS_VALUE &&
2721 ic->bit_rate != 0) {
2722 filesize = ic->pb ? avio_size(ic->pb) : 0;
2723 if (filesize > ic->internal->data_offset) {
2724 filesize -= ic->internal->data_offset;
2725 for (i = 0; i < ic->nb_streams; i++) {
2726 st = ic->streams[i];
2727 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2728 && st->duration == AV_NOPTS_VALUE) {
2729 duration = av_rescale(8 * filesize, st->time_base.den,
2731 (int64_t) st->time_base.num);
2732 st->duration = duration;
2739 av_log(ic, AV_LOG_WARNING,
2740 "Estimating duration from bitrate, this may be inaccurate\n");
2743 #define DURATION_MAX_READ_SIZE 250000LL
2744 #define DURATION_MAX_RETRY 6
2746 /* only usable for MPEG-PS streams */
2747 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2749 AVPacket pkt1, *pkt = &pkt1;
2751 int num, den, read_size, i, ret;
2752 int found_duration = 0;
2754 int64_t filesize, offset, duration;
2757 /* flush packet queue */
2758 flush_packet_queue(ic);
2760 for (i = 0; i < ic->nb_streams; i++) {
2761 st = ic->streams[i];
2762 if (st->start_time == AV_NOPTS_VALUE &&
2763 st->first_dts == AV_NOPTS_VALUE &&
2764 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2765 av_log(ic, AV_LOG_WARNING,
2766 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2769 av_parser_close(st->parser);
2774 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2775 /* estimate the end time (duration) */
2776 /* XXX: may need to support wrapping */
2777 filesize = ic->pb ? avio_size(ic->pb) : 0;
2779 is_end = found_duration;
2780 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2784 avio_seek(ic->pb, offset, SEEK_SET);
2787 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2791 ret = ff_read_packet(ic, pkt);
2792 } while (ret == AVERROR(EAGAIN));
2795 read_size += pkt->size;
2796 st = ic->streams[pkt->stream_index];
2797 if (pkt->pts != AV_NOPTS_VALUE &&
2798 (st->start_time != AV_NOPTS_VALUE ||
2799 st->first_dts != AV_NOPTS_VALUE)) {
2800 if (pkt->duration == 0) {
2801 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2803 pkt->duration = av_rescale_rnd(1,
2804 num * (int64_t) st->time_base.den,
2805 den * (int64_t) st->time_base.num,
2809 duration = pkt->pts + pkt->duration;
2811 if (st->start_time != AV_NOPTS_VALUE)
2812 duration -= st->start_time;
2814 duration -= st->first_dts;
2816 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2817 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2818 st->duration = duration;
2819 st->info->last_duration = duration;
2822 av_packet_unref(pkt);
2825 /* check if all audio/video streams have valid duration */
2828 for (i = 0; i < ic->nb_streams; i++) {
2829 st = ic->streams[i];
2830 switch (st->codecpar->codec_type) {
2831 case AVMEDIA_TYPE_VIDEO:
2832 case AVMEDIA_TYPE_AUDIO:
2833 if (st->duration == AV_NOPTS_VALUE)
2840 ++retry <= DURATION_MAX_RETRY);
2842 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2844 /* warn about audio/video streams which duration could not be estimated */
2845 for (i = 0; i < ic->nb_streams; i++) {
2846 st = ic->streams[i];
2847 if (st->duration == AV_NOPTS_VALUE) {
2848 switch (st->codecpar->codec_type) {
2849 case AVMEDIA_TYPE_VIDEO:
2850 case AVMEDIA_TYPE_AUDIO:
2851 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2852 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2854 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2858 fill_all_stream_timings(ic);
2860 avio_seek(ic->pb, old_offset, SEEK_SET);
2861 for (i = 0; i < ic->nb_streams; i++) {
2864 st = ic->streams[i];
2865 st->cur_dts = st->first_dts;
2866 st->last_IP_pts = AV_NOPTS_VALUE;
2867 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2868 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2869 st->pts_buffer[j] = AV_NOPTS_VALUE;
2873 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2877 /* get the file size, if possible */
2878 if (ic->iformat->flags & AVFMT_NOFILE) {
2881 file_size = avio_size(ic->pb);
2882 file_size = FFMAX(0, file_size);
2885 if ((!strcmp(ic->iformat->name, "mpeg") ||
2886 !strcmp(ic->iformat->name, "mpegts")) &&
2887 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2888 /* get accurate estimate from the PTSes */
2889 estimate_timings_from_pts(ic, old_offset);
2890 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2891 } else if (has_duration(ic)) {
2892 /* at least one component has timings - we use them for all
2894 fill_all_stream_timings(ic);
2895 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2897 /* less precise: use bitrate info */
2898 estimate_timings_from_bit_rate(ic);
2899 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2901 update_stream_timings(ic);
2905 AVStream av_unused *st;
2906 for (i = 0; i < ic->nb_streams; i++) {
2907 st = ic->streams[i];
2908 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2909 (double) st->start_time * av_q2d(st->time_base),
2910 (double) st->duration * av_q2d(st->time_base));
2912 av_log(ic, AV_LOG_TRACE,
2913 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2914 (double) ic->start_time / AV_TIME_BASE,
2915 (double) ic->duration / AV_TIME_BASE,
2916 (int64_t)ic->bit_rate / 1000);
2920 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2922 AVCodecContext *avctx = st->internal->avctx;
2924 #define FAIL(errmsg) do { \
2926 *errmsg_ptr = errmsg; \
2930 if ( avctx->codec_id == AV_CODEC_ID_NONE
2931 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2932 FAIL("unknown codec");
2933 switch (avctx->codec_type) {
2934 case AVMEDIA_TYPE_AUDIO:
2935 if (!avctx->frame_size && determinable_frame_size(avctx))
2936 FAIL("unspecified frame size");
2937 if (st->info->found_decoder >= 0 &&
2938 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2939 FAIL("unspecified sample format");
2940 if (!avctx->sample_rate)
2941 FAIL("unspecified sample rate");
2942 if (!avctx->channels)
2943 FAIL("unspecified number of channels");
2944 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2945 FAIL("no decodable DTS frames");
2947 case AVMEDIA_TYPE_VIDEO:
2949 FAIL("unspecified size");
2950 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2951 FAIL("unspecified pixel format");
2952 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2953 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2954 FAIL("no frame in rv30/40 and no sar");
2956 case AVMEDIA_TYPE_SUBTITLE:
2957 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2958 FAIL("unspecified size");
2960 case AVMEDIA_TYPE_DATA:
2961 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2967 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2968 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2969 AVDictionary **options)
2971 AVCodecContext *avctx = st->internal->avctx;
2972 const AVCodec *codec;
2973 int got_picture = 1, ret = 0;
2974 AVFrame *frame = av_frame_alloc();
2975 AVSubtitle subtitle;
2976 AVPacket pkt = *avpkt;
2977 int do_skip_frame = 0;
2978 enum AVDiscard skip_frame;
2981 return AVERROR(ENOMEM);
2983 if (!avcodec_is_open(avctx) &&
2984 st->info->found_decoder <= 0 &&
2985 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
2986 AVDictionary *thread_opt = NULL;
2988 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
2991 st->info->found_decoder = -st->codecpar->codec_id;
2996 /* Force thread count to 1 since the H.264 decoder will not extract
2997 * SPS and PPS to extradata during multi-threaded decoding. */
2998 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2999 if (s->codec_whitelist)
3000 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3001 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3003 av_dict_free(&thread_opt);
3005 st->info->found_decoder = -avctx->codec_id;
3008 st->info->found_decoder = 1;
3009 } else if (!st->info->found_decoder)
3010 st->info->found_decoder = 1;
3012 if (st->info->found_decoder < 0) {
3017 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3019 skip_frame = avctx->skip_frame;
3020 avctx->skip_frame = AVDISCARD_ALL;
3023 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3025 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3026 (!st->codec_info_nb_frames &&
3027 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3029 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3030 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3031 ret = avcodec_send_packet(avctx, &pkt);
3032 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3036 ret = avcodec_receive_frame(avctx, frame);
3039 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3041 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3042 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3043 &got_picture, &pkt);
3049 st->nb_decoded_frames++;
3054 if (!pkt.data && !got_picture)
3058 if (do_skip_frame) {
3059 avctx->skip_frame = skip_frame;
3062 av_frame_free(&frame);
3066 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3068 while (tags->id != AV_CODEC_ID_NONE) {
3076 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3079 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3080 if (tag == tags[i].tag)
3082 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3083 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3085 return AV_CODEC_ID_NONE;
3088 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3090 if (bps <= 0 || bps > 64)
3091 return AV_CODEC_ID_NONE;
3096 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3098 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3100 return AV_CODEC_ID_NONE;
3105 if (sflags & (1 << (bps - 1))) {
3108 return AV_CODEC_ID_PCM_S8;
3110 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3112 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3114 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3116 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3118 return AV_CODEC_ID_NONE;
3123 return AV_CODEC_ID_PCM_U8;
3125 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3127 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3129 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3131 return AV_CODEC_ID_NONE;
3137 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3140 if (!av_codec_get_tag2(tags, id, &tag))
3145 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3149 for (i = 0; tags && tags[i]; i++) {
3150 const AVCodecTag *codec_tags = tags[i];
3151 while (codec_tags->id != AV_CODEC_ID_NONE) {
3152 if (codec_tags->id == id) {
3153 *tag = codec_tags->tag;
3162 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3165 for (i = 0; tags && tags[i]; i++) {
3166 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3167 if (id != AV_CODEC_ID_NONE)
3170 return AV_CODEC_ID_NONE;
3173 static void compute_chapters_end(AVFormatContext *s)
3176 int64_t max_time = 0;
3178 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3179 max_time = s->duration +
3180 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3182 for (i = 0; i < s->nb_chapters; i++)
3183 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3184 AVChapter *ch = s->chapters[i];
3185 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3189 for (j = 0; j < s->nb_chapters; j++) {
3190 AVChapter *ch1 = s->chapters[j];
3191 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3193 if (j != i && next_start > ch->start && next_start < end)
3196 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3200 static int get_std_framerate(int i)
3203 return (i + 1) * 1001;
3207 return (i + 31) * 1001 * 12;
3211 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3215 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3218 /* Is the time base unreliable?
3219 * This is a heuristic to balance between quick acceptance of the values in
3220 * the headers vs. some extra checks.
3221 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3222 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3223 * And there are "variable" fps files this needs to detect as well. */
3224 static int tb_unreliable(AVCodecContext *c)
3226 if (c->time_base.den >= 101LL * c->time_base.num ||
3227 c->time_base.den < 5LL * c->time_base.num ||
3228 // c->codec_tag == AV_RL32("DIVX") ||
3229 // c->codec_tag == AV_RL32("XVID") ||
3230 c->codec_tag == AV_RL32("mp4v") ||
3231 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3232 c->codec_id == AV_CODEC_ID_GIF ||
3233 c->codec_id == AV_CODEC_ID_HEVC ||
3234 c->codec_id == AV_CODEC_ID_H264)
3239 int ff_alloc_extradata(AVCodecParameters *par, int size)
3243 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
3244 par->extradata = NULL;
3245 par->extradata_size = 0;
3246 return AVERROR(EINVAL);
3248 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3249 if (par->extradata) {
3250 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3251 par->extradata_size = size;
3254 par->extradata_size = 0;
3255 ret = AVERROR(ENOMEM);
3260 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3262 int ret = ff_alloc_extradata(par, size);
3265 ret = avio_read(pb, par->extradata, size);
3267 av_freep(&par->extradata);
3268 par->extradata_size = 0;
3269 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3270 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3276 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3279 int64_t last = st->info->last_dts;
3281 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3282 && ts - (uint64_t)last < INT64_MAX) {
3283 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3284 int64_t duration = ts - last;
3286 if (!st->info->duration_error)
3287 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3288 if (!st->info->duration_error)
3289 return AVERROR(ENOMEM);
3291 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3292 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3293 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3294 if (st->info->duration_error[0][1][i] < 1e10) {
3295 int framerate = get_std_framerate(i);
3296 double sdts = dts*framerate/(1001*12);
3297 for (j= 0; j<2; j++) {
3298 int64_t ticks = llrint(sdts+j*0.5);
3299 double error= sdts - ticks + j*0.5;
3300 st->info->duration_error[j][0][i] += error;
3301 st->info->duration_error[j][1][i] += error*error;
3305 st->info->duration_count++;
3306 st->info->rfps_duration_sum += duration;
3308 if (st->info->duration_count % 10 == 0) {
3309 int n = st->info->duration_count;
3310 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3311 if (st->info->duration_error[0][1][i] < 1e10) {
3312 double a0 = st->info->duration_error[0][0][i] / n;
3313 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3314 double a1 = st->info->duration_error[1][0][i] / n;
3315 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3316 if (error0 > 0.04 && error1 > 0.04) {
3317 st->info->duration_error[0][1][i] = 2e10;
3318 st->info->duration_error[1][1][i] = 2e10;
3324 // ignore the first 4 values, they might have some random jitter
3325 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3326 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3328 if (ts != AV_NOPTS_VALUE)
3329 st->info->last_dts = ts;
3334 void ff_rfps_calculate(AVFormatContext *ic)
3338 for (i = 0; i < ic->nb_streams; i++) {
3339 AVStream *st = ic->streams[i];
3341 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3343 // the check for tb_unreliable() is not completely correct, since this is not about handling
3344 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3345 // ipmovie.c produces.
3346 if (tb_unreliable(st->internal->avctx) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
3347 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
3348 if (st->info->duration_count>1 && !st->r_frame_rate.num
3349 && tb_unreliable(st->internal->avctx)) {
3351 double best_error= 0.01;
3352 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3354 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3357 if (st->info->codec_info_duration &&
3358 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3360 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3363 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3366 for (k= 0; k<2; k++) {
3367 int n = st->info->duration_count;
3368 double a= st->info->duration_error[k][0][j] / n;
3369 double error= st->info->duration_error[k][1][j]/n - a*a;
3371 if (error < best_error && best_error> 0.000000001) {
3373 num = get_std_framerate(j);
3376 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3379 // do not increase frame rate by more than 1 % in order to match a standard rate.
3380 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3381 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3383 if ( !st->avg_frame_rate.num
3384 && st->r_frame_rate.num && st->info->rfps_duration_sum
3385 && st->info->codec_info_duration <= 0
3386 && st->info->duration_count > 2
3387 && fabs(1.0 / (av_q2d(st->r_frame_rate) * av_q2d(st->time_base)) - st->info->rfps_duration_sum / (double)st->info->duration_count) <= 1.0
3389 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3390 st->avg_frame_rate = st->r_frame_rate;
3393 av_freep(&st->info->duration_error);
3394 st->info->last_dts = AV_NOPTS_VALUE;
3395 st->info->duration_count = 0;
3396 st->info->rfps_duration_sum = 0;
3400 static int extract_extradata_check(AVStream *st)
3402 const AVBitStreamFilter *f;
3404 f = av_bsf_get_by_name("extract_extradata");
3409 const enum AVCodecID *ids;
3410 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3411 if (*ids == st->codecpar->codec_id)
3418 static int extract_extradata_init(AVStream *st)
3420 AVStreamInternal *i = st->internal;
3421 const AVBitStreamFilter *f;
3424 f = av_bsf_get_by_name("extract_extradata");
3428 /* check that the codec id is supported */
3429 ret = extract_extradata_check(st);
3433 i->extract_extradata.pkt = av_packet_alloc();
3434 if (!i->extract_extradata.pkt)
3435 return AVERROR(ENOMEM);
3437 ret = av_bsf_alloc(f, &i->extract_extradata.bsf);
3441 ret = avcodec_parameters_copy(i->extract_extradata.bsf->par_in,
3446 i->extract_extradata.bsf->time_base_in = st->time_base;
3448 /* if init fails here, we assume extracting extradata is just not
3449 * supported for this codec, so we return success */
3450 ret = av_bsf_init(i->extract_extradata.bsf);
3452 av_bsf_free(&i->extract_extradata.bsf);
3457 i->extract_extradata.inited = 1;
3461 av_bsf_free(&i->extract_extradata.bsf);
3462 av_packet_free(&i->extract_extradata.pkt);
3466 static int extract_extradata(AVStream *st, AVPacket *pkt)
3468 AVStreamInternal *i = st->internal;
3472 if (!i->extract_extradata.inited) {
3473 ret = extract_extradata_init(st);
3478 if (i->extract_extradata.inited && !i->extract_extradata.bsf)
3481 pkt_ref = i->extract_extradata.pkt;
3482 ret = av_packet_ref(pkt_ref, pkt);
3486 ret = av_bsf_send_packet(i->extract_extradata.bsf, pkt_ref);
3488 av_packet_unref(pkt_ref);
3492 while (ret >= 0 && !i->avctx->extradata) {
3496 ret = av_bsf_receive_packet(i->extract_extradata.bsf, pkt_ref);
3498 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3503 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3507 i->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3508 if (!i->avctx->extradata) {
3509 av_packet_unref(pkt_ref);
3510 return AVERROR(ENOMEM);
3512 memcpy(i->avctx->extradata, extradata, extradata_size);
3513 i->avctx->extradata_size = extradata_size;
3515 av_packet_unref(pkt_ref);
3521 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3523 int i, count = 0, ret = 0, j;
3526 AVCodecContext *avctx;
3527 AVPacket pkt1, *pkt;
3528 int64_t old_offset = avio_tell(ic->pb);
3529 // new streams might appear, no options for those
3530 int orig_nb_streams = ic->nb_streams;
3532 int64_t max_analyze_duration = ic->max_analyze_duration;
3533 int64_t max_stream_analyze_duration;
3534 int64_t max_subtitle_analyze_duration;
3535 int64_t probesize = ic->probesize;
3536 int eof_reached = 0;
3537 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3539 flush_codecs = probesize > 0;
3541 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3543 max_stream_analyze_duration = max_analyze_duration;
3544 max_subtitle_analyze_duration = max_analyze_duration;
3545 if (!max_analyze_duration) {
3546 max_stream_analyze_duration =
3547 max_analyze_duration = 5*AV_TIME_BASE;
3548 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3549 if (!strcmp(ic->iformat->name, "flv"))
3550 max_stream_analyze_duration = 90*AV_TIME_BASE;
3551 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3552 max_stream_analyze_duration = 7*AV_TIME_BASE;
3556 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3557 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3559 for (i = 0; i < ic->nb_streams; i++) {
3560 const AVCodec *codec;
3561 AVDictionary *thread_opt = NULL;
3562 st = ic->streams[i];
3563 avctx = st->internal->avctx;
3565 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3566 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3567 /* if (!st->time_base.num)
3569 if (!avctx->time_base.num)
3570 avctx->time_base = st->time_base;
3573 /* check if the caller has overridden the codec id */
3574 #if FF_API_LAVF_AVCTX
3575 FF_DISABLE_DEPRECATION_WARNINGS
3576 if (st->codec->codec_id != st->internal->orig_codec_id) {
3577 st->codecpar->codec_id = st->codec->codec_id;
3578 st->codecpar->codec_type = st->codec->codec_type;
3579 st->internal->orig_codec_id = st->codec->codec_id;
3581 FF_ENABLE_DEPRECATION_WARNINGS
3583 // only for the split stuff
3584 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3585 st->parser = av_parser_init(st->codecpar->codec_id);
3587 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3588 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3589 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3590 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3592 } else if (st->need_parsing) {
3593 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3594 "%s, packets or times may be invalid.\n",
3595 avcodec_get_name(st->codecpar->codec_id));
3599 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3600 st->internal->orig_codec_id = st->codecpar->codec_id;
3602 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3604 goto find_stream_info_err;
3605 if (st->request_probe <= 0)
3606 st->internal->avctx_inited = 1;
3608 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3610 /* Force thread count to 1 since the H.264 decoder will not extract
3611 * SPS and PPS to extradata during multi-threaded decoding. */
3612 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3614 if (ic->codec_whitelist)
3615 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3617 /* Ensure that subtitle_header is properly set. */
3618 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3619 && codec && !avctx->codec) {
3620 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3621 av_log(ic, AV_LOG_WARNING,
3622 "Failed to open codec in %s\n",__FUNCTION__);
3625 // Try to just open decoders, in case this is enough to get parameters.
3626 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3627 if (codec && !avctx->codec)
3628 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3629 av_log(ic, AV_LOG_WARNING,
3630 "Failed to open codec in %s\n",__FUNCTION__);
3633 av_dict_free(&thread_opt);
3636 for (i = 0; i < ic->nb_streams; i++) {
3637 #if FF_API_R_FRAME_RATE
3638 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3640 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3641 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3646 int analyzed_all_streams;
3647 if (ff_check_interrupt(&ic->interrupt_callback)) {
3649 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3653 /* check if one codec still needs to be handled */
3654 for (i = 0; i < ic->nb_streams; i++) {
3655 int fps_analyze_framecount = 20;
3658 st = ic->streams[i];
3659 if (!has_codec_parameters(st, NULL))
3661 /* If the timebase is coarse (like the usual millisecond precision
3662 * of mkv), we need to analyze more frames to reliably arrive at
3663 * the correct fps. */
3664 if (av_q2d(st->time_base) > 0.0005)
3665 fps_analyze_framecount *= 2;
3666 if (!tb_unreliable(st->internal->avctx))
3667 fps_analyze_framecount = 0;
3668 if (ic->fps_probe_size >= 0)
3669 fps_analyze_framecount = ic->fps_probe_size;
3670 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3671 fps_analyze_framecount = 0;
3672 /* variable fps and no guess at the real fps */
3673 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3674 st->info->codec_info_duration_fields/2 :
3675 st->info->duration_count;
3676 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3677 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3678 if (count < fps_analyze_framecount)
3681 // Look at the first 3 frames if there is evidence of frame delay
3682 // but the decoder delay is not set.
3683 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3685 if (!st->internal->avctx->extradata &&
3686 (!st->internal->extract_extradata.inited ||
3687 st->internal->extract_extradata.bsf) &&
3688 extract_extradata_check(st))
3690 if (st->first_dts == AV_NOPTS_VALUE &&
3691 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3692 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3693 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3694 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3697 analyzed_all_streams = 0;
3698 if (!missing_streams || !*missing_streams)
3699 if (i == ic->nb_streams) {
3700 analyzed_all_streams = 1;
3701 /* NOTE: If the format has no header, then we need to read some
3702 * packets to get most of the streams, so we cannot stop here. */
3703 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3704 /* If we found the info for all the codecs, we can stop. */
3706 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3711 /* We did not get all the codec info, but we read too much data. */
3712 if (read_size >= probesize) {
3714 av_log(ic, AV_LOG_DEBUG,
3715 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3716 for (i = 0; i < ic->nb_streams; i++)
3717 if (!ic->streams[i]->r_frame_rate.num &&
3718 ic->streams[i]->info->duration_count <= 1 &&
3719 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3720 strcmp(ic->iformat->name, "image2"))
3721 av_log(ic, AV_LOG_WARNING,
3722 "Stream #%d: not enough frames to estimate rate; "
3723 "consider increasing probesize\n", i);
3727 /* NOTE: A new stream can be added there if no header in file
3728 * (AVFMTCTX_NOHEADER). */
3729 ret = read_frame_internal(ic, &pkt1);
3730 if (ret == AVERROR(EAGAIN))
3741 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3742 ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
3743 &ic->internal->packet_buffer_end, 0);
3745 goto find_stream_info_err;
3748 st = ic->streams[pkt->stream_index];
3749 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3750 read_size += pkt->size;
3752 avctx = st->internal->avctx;
3753 if (!st->internal->avctx_inited) {
3754 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3756 goto find_stream_info_err;
3757 st->internal->avctx_inited = 1;
3760 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3761 /* check for non-increasing dts */
3762 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3763 st->info->fps_last_dts >= pkt->dts) {
3764 av_log(ic, AV_LOG_DEBUG,
3765 "Non-increasing DTS in stream %d: packet %d with DTS "
3766 "%"PRId64", packet %d with DTS %"PRId64"\n",
3767 st->index, st->info->fps_last_dts_idx,
3768 st->info->fps_last_dts, st->codec_info_nb_frames,
3770 st->info->fps_first_dts =
3771 st->info->fps_last_dts = AV_NOPTS_VALUE;
3773 /* Check for a discontinuity in dts. If the difference in dts
3774 * is more than 1000 times the average packet duration in the
3775 * sequence, we treat it as a discontinuity. */
3776 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3777 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3778 (pkt->dts - st->info->fps_last_dts) / 1000 >
3779 (st->info->fps_last_dts - st->info->fps_first_dts) /
3780 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3781 av_log(ic, AV_LOG_WARNING,
3782 "DTS discontinuity in stream %d: packet %d with DTS "
3783 "%"PRId64", packet %d with DTS %"PRId64"\n",
3784 st->index, st->info->fps_last_dts_idx,
3785 st->info->fps_last_dts, st->codec_info_nb_frames,
3787 st->info->fps_first_dts =
3788 st->info->fps_last_dts = AV_NOPTS_VALUE;
3791 /* update stored dts values */
3792 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3793 st->info->fps_first_dts = pkt->dts;
3794 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3796 st->info->fps_last_dts = pkt->dts;
3797 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3799 if (st->codec_info_nb_frames>1) {
3803 if (st->time_base.den > 0)
3804 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3805 if (st->avg_frame_rate.num > 0)
3806 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3809 && st->codec_info_nb_frames>30
3810 && st->info->fps_first_dts != AV_NOPTS_VALUE
3811 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3812 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3814 if (analyzed_all_streams) limit = max_analyze_duration;
3815 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3816 else limit = max_stream_analyze_duration;
3819 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3821 t, pkt->stream_index);
3822 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3823 av_packet_unref(pkt);
3826 if (pkt->duration) {
3827 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3828 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3830 st->info->codec_info_duration += pkt->duration;
3831 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3834 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3835 #if FF_API_R_FRAME_RATE
3836 ff_rfps_add_frame(ic, st, pkt->dts);
3838 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3839 st->info->frame_delay_evidence = 1;
3841 if (!st->internal->avctx->extradata) {
3842 ret = extract_extradata(st, pkt);
3844 goto find_stream_info_err;
3847 /* If still no information, we try to open the codec and to
3848 * decompress the frame. We try to avoid that in most cases as
3849 * it takes longer and uses more memory. For MPEG-4, we need to
3850 * decompress for QuickTime.
3852 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3853 * least one frame of codec data, this makes sure the codec initializes
3854 * the channel configuration and does not only trust the values from
3856 try_decode_frame(ic, st, pkt,
3857 (options && i < orig_nb_streams) ? &options[i] : NULL);
3859 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3860 av_packet_unref(pkt);
3862 st->codec_info_nb_frames++;
3868 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3869 st = ic->streams[stream_index];
3870 avctx = st->internal->avctx;
3871 if (!has_codec_parameters(st, NULL)) {
3872 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3873 if (codec && !avctx->codec) {
3874 AVDictionary *opts = NULL;
3875 if (ic->codec_whitelist)
3876 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3877 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3878 av_log(ic, AV_LOG_WARNING,
3879 "Failed to open codec in %s\n",__FUNCTION__);
3880 av_dict_free(&opts);
3884 // EOF already reached while reading the stream above.
3885 // So continue with reoordering DTS with whatever delay we have.
3886 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3887 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3893 AVPacket empty_pkt = { 0 };
3895 av_init_packet(&empty_pkt);
3897 for (i = 0; i < ic->nb_streams; i++) {
3899 st = ic->streams[i];
3901 /* flush the decoders */
3902 if (st->info->found_decoder == 1) {
3904 err = try_decode_frame(ic, st, &empty_pkt,
3905 (options && i < orig_nb_streams)
3906 ? &options[i] : NULL);
3907 } while (err > 0 && !has_codec_parameters(st, NULL));
3910 av_log(ic, AV_LOG_INFO,
3911 "decoding for stream %d failed\n", st->index);
3917 ff_rfps_calculate(ic);
3919 for (i = 0; i < ic->nb_streams; i++) {
3920 st = ic->streams[i];
3921 avctx = st->internal->avctx;
3922 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3923 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3924 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3925 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3926 avctx->codec_tag= tag;
3929 /* estimate average framerate if not set by demuxer */
3930 if (st->info->codec_info_duration_fields &&
3931 !st->avg_frame_rate.num &&
3932 st->info->codec_info_duration) {
3934 double best_error = 0.01;
3935 AVRational codec_frame_rate = avctx->framerate;
3937 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3938 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3939 st->info->codec_info_duration < 0)
3941 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3942 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3943 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3945 /* Round guessed framerate to a "standard" framerate if it's
3946 * within 1% of the original estimate. */
3947 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3948 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3949 double error = fabs(av_q2d(st->avg_frame_rate) /
3950 av_q2d(std_fps) - 1);
3952 if (error < best_error) {
3954 best_fps = std_fps.num;
3957 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
3958 error = fabs(av_q2d(codec_frame_rate) /
3959 av_q2d(std_fps) - 1);
3960 if (error < best_error) {
3962 best_fps = std_fps.num;
3967 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3968 best_fps, 12 * 1001, INT_MAX);
3971 if (!st->r_frame_rate.num) {
3972 if ( avctx->time_base.den * (int64_t) st->time_base.num
3973 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
3974 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
3975 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
3977 st->r_frame_rate.num = st->time_base.den;
3978 st->r_frame_rate.den = st->time_base.num;
3981 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3982 AVRational hw_ratio = { avctx->height, avctx->width };
3983 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3986 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3987 if (!avctx->bits_per_coded_sample)
3988 avctx->bits_per_coded_sample =
3989 av_get_bits_per_sample(avctx->codec_id);
3990 // set stream disposition based on audio service type
3991 switch (avctx->audio_service_type) {
3992 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3993 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3995 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3996 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3998 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3999 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4001 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4002 st->disposition = AV_DISPOSITION_COMMENT;
4004 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4005 st->disposition = AV_DISPOSITION_KARAOKE;
4012 estimate_timings(ic, old_offset);
4014 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4016 if (ret >= 0 && ic->nb_streams)
4017 /* We could not have all the codec parameters before EOF. */
4019 for (i = 0; i < ic->nb_streams; i++) {
4021 st = ic->streams[i];
4023 /* if no packet was ever seen, update context now for has_codec_parameters */
4024 if (!st->internal->avctx_inited) {
4025 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4026 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4027 st->codecpar->format = st->internal->avctx->sample_fmt;
4028 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4030 goto find_stream_info_err;
4032 if (!has_codec_parameters(st, &errmsg)) {
4034 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4035 av_log(ic, AV_LOG_WARNING,
4036 "Could not find codec parameters for stream %d (%s): %s\n"
4037 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4044 compute_chapters_end(ic);
4046 /* update the stream parameters from the internal codec contexts */
4047 for (i = 0; i < ic->nb_streams; i++) {
4048 st = ic->streams[i];
4050 if (st->internal->avctx_inited) {
4051 int orig_w = st->codecpar->width;
4052 int orig_h = st->codecpar->height;
4053 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4055 goto find_stream_info_err;
4057 // The decoder might reduce the video size by the lowres factor.
4058 if (st->internal->avctx->lowres && orig_w) {
4059 st->codecpar->width = orig_w;
4060 st->codecpar->height = orig_h;
4065 #if FF_API_LAVF_AVCTX
4066 FF_DISABLE_DEPRECATION_WARNINGS
4067 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4069 goto find_stream_info_err;
4072 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4073 // by the lowres factor.
4074 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4075 st->codec->lowres = st->internal->avctx->lowres;
4076 st->codec->width = st->internal->avctx->width;
4077 st->codec->height = st->internal->avctx->height;
4081 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4082 st->codec->time_base = st->internal->avctx->time_base;
4083 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4085 st->codec->framerate = st->avg_frame_rate;
4087 if (st->internal->avctx->subtitle_header) {
4088 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4089 if (!st->codec->subtitle_header)
4090 goto find_stream_info_err;
4091 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4092 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4093 st->codec->subtitle_header_size);
4096 // Fields unavailable in AVCodecParameters
4097 st->codec->coded_width = st->internal->avctx->coded_width;
4098 st->codec->coded_height = st->internal->avctx->coded_height;
4099 st->codec->properties = st->internal->avctx->properties;
4100 FF_ENABLE_DEPRECATION_WARNINGS
4103 st->internal->avctx_inited = 0;
4106 find_stream_info_err:
4107 for (i = 0; i < ic->nb_streams; i++) {
4108 st = ic->streams[i];
4110 av_freep(&st->info->duration_error);
4111 avcodec_close(ic->streams[i]->internal->avctx);
4112 av_freep(&ic->streams[i]->info);
4113 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4114 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4117 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4118 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4122 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4126 for (i = 0; i < ic->nb_programs; i++) {
4127 if (ic->programs[i] == last) {
4131 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4132 if (ic->programs[i]->stream_index[j] == s)
4133 return ic->programs[i];
4139 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4140 int wanted_stream_nb, int related_stream,
4141 AVCodec **decoder_ret, int flags)
4143 int i, nb_streams = ic->nb_streams;
4144 int ret = AVERROR_STREAM_NOT_FOUND;
4145 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4146 int count, multiframe, disposition;
4147 int64_t best_bitrate = -1;
4149 unsigned *program = NULL;
4150 const AVCodec *decoder = NULL, *best_decoder = NULL;
4152 if (related_stream >= 0 && wanted_stream_nb < 0) {
4153 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4155 program = p->stream_index;
4156 nb_streams = p->nb_stream_indexes;
4159 for (i = 0; i < nb_streams; i++) {
4160 int real_stream_index = program ? program[i] : i;
4161 AVStream *st = ic->streams[real_stream_index];
4162 AVCodecParameters *par = st->codecpar;
4163 if (par->codec_type != type)
4165 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4167 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4170 decoder = find_decoder(ic, st, par->codec_id);
4173 ret = AVERROR_DECODER_NOT_FOUND;
4177 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED));
4178 count = st->codec_info_nb_frames;
4179 bitrate = par->bit_rate;
4180 multiframe = FFMIN(5, count);
4181 if ((best_disposition > disposition) ||
4182 (best_disposition == disposition && best_multiframe > multiframe) ||
4183 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4184 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4186 best_disposition = disposition;
4188 best_bitrate = bitrate;
4189 best_multiframe = multiframe;
4190 ret = real_stream_index;
4191 best_decoder = decoder;
4192 if (program && i == nb_streams - 1 && ret < 0) {
4194 nb_streams = ic->nb_streams;
4195 /* no related stream found, try again with everything */
4200 *decoder_ret = (AVCodec*)best_decoder;
4204 /*******************************************************/
4206 int av_read_play(AVFormatContext *s)
4208 if (s->iformat->read_play)
4209 return s->iformat->read_play(s);
4211 return avio_pause(s->pb, 0);
4212 return AVERROR(ENOSYS);
4215 int av_read_pause(AVFormatContext *s)
4217 if (s->iformat->read_pause)
4218 return s->iformat->read_pause(s);
4220 return avio_pause(s->pb, 1);
4221 return AVERROR(ENOSYS);
4224 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4229 dst->time_base = src->time_base;
4230 dst->nb_frames = src->nb_frames;
4231 dst->disposition = src->disposition;
4232 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4233 dst->avg_frame_rate = src->avg_frame_rate;
4234 dst->r_frame_rate = src->r_frame_rate;
4236 av_dict_free(&dst->metadata);
4237 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4241 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4245 /* Free existing side data*/
4246 for (i = 0; i < dst->nb_side_data; i++)
4247 av_free(dst->side_data[i].data);
4248 av_freep(&dst->side_data);
4249 dst->nb_side_data = 0;
4251 /* Copy side data if present */
4252 if (src->nb_side_data) {
4253 dst->side_data = av_mallocz_array(src->nb_side_data,
4254 sizeof(AVPacketSideData));
4255 if (!dst->side_data)
4256 return AVERROR(ENOMEM);
4257 dst->nb_side_data = src->nb_side_data;
4259 for (i = 0; i < src->nb_side_data; i++) {
4260 uint8_t *data = av_memdup(src->side_data[i].data,
4261 src->side_data[i].size);
4263 return AVERROR(ENOMEM);
4264 dst->side_data[i].type = src->side_data[i].type;
4265 dst->side_data[i].size = src->side_data[i].size;
4266 dst->side_data[i].data = data;
4270 #if FF_API_LAVF_FFSERVER
4271 FF_DISABLE_DEPRECATION_WARNINGS
4272 av_freep(&dst->recommended_encoder_configuration);
4273 if (src->recommended_encoder_configuration) {
4274 const char *conf_str = src->recommended_encoder_configuration;
4275 dst->recommended_encoder_configuration = av_strdup(conf_str);
4276 if (!dst->recommended_encoder_configuration)
4277 return AVERROR(ENOMEM);
4279 FF_ENABLE_DEPRECATION_WARNINGS
4285 static void free_stream(AVStream **pst)
4287 AVStream *st = *pst;
4293 for (i = 0; i < st->nb_side_data; i++)
4294 av_freep(&st->side_data[i].data);
4295 av_freep(&st->side_data);
4298 av_parser_close(st->parser);
4300 if (st->attached_pic.data)
4301 av_packet_unref(&st->attached_pic);
4304 avcodec_free_context(&st->internal->avctx);
4305 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4306 av_bsf_free(&st->internal->bsfcs[i]);
4307 av_freep(&st->internal->bsfcs);
4309 av_freep(&st->internal->priv_pts);
4310 av_bsf_free(&st->internal->extract_extradata.bsf);
4311 av_packet_free(&st->internal->extract_extradata.pkt);
4313 av_freep(&st->internal);
4315 av_dict_free(&st->metadata);
4316 avcodec_parameters_free(&st->codecpar);
4317 av_freep(&st->probe_data.buf);
4318 av_freep(&st->index_entries);
4319 #if FF_API_LAVF_AVCTX
4320 FF_DISABLE_DEPRECATION_WARNINGS
4321 avcodec_free_context(&st->codec);
4322 FF_ENABLE_DEPRECATION_WARNINGS
4324 av_freep(&st->priv_data);
4326 av_freep(&st->info->duration_error);
4327 av_freep(&st->info);
4328 #if FF_API_LAVF_FFSERVER
4329 FF_DISABLE_DEPRECATION_WARNINGS
4330 av_freep(&st->recommended_encoder_configuration);
4331 FF_ENABLE_DEPRECATION_WARNINGS
4337 void ff_free_stream(AVFormatContext *s, AVStream *st)
4339 av_assert0(s->nb_streams>0);
4340 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4342 free_stream(&s->streams[ --s->nb_streams ]);
4345 void avformat_free_context(AVFormatContext *s)
4353 if (s->iformat && s->iformat->priv_class && s->priv_data)
4354 av_opt_free(s->priv_data);
4355 if (s->oformat && s->oformat->priv_class && s->priv_data)
4356 av_opt_free(s->priv_data);
4358 for (i = s->nb_streams - 1; i >= 0; i--)
4359 ff_free_stream(s, s->streams[i]);
4362 for (i = s->nb_programs - 1; i >= 0; i--) {
4363 av_dict_free(&s->programs[i]->metadata);
4364 av_freep(&s->programs[i]->stream_index);
4365 av_freep(&s->programs[i]);
4367 av_freep(&s->programs);
4368 av_freep(&s->priv_data);
4369 while (s->nb_chapters--) {
4370 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4371 av_freep(&s->chapters[s->nb_chapters]);
4373 av_freep(&s->chapters);
4374 av_dict_free(&s->metadata);
4375 av_dict_free(&s->internal->id3v2_meta);
4376 av_freep(&s->streams);
4377 flush_packet_queue(s);
4378 av_freep(&s->internal);
4383 void avformat_close_input(AVFormatContext **ps)
4394 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4395 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4398 flush_packet_queue(s);
4401 if (s->iformat->read_close)
4402 s->iformat->read_close(s);
4404 avformat_free_context(s);
4411 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4417 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4418 if (s->max_streams < INT_MAX/sizeof(*streams))
4419 av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter (%d), see the documentation if you wish to increase it\n", s->max_streams);
4422 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4425 s->streams = streams;
4427 st = av_mallocz(sizeof(AVStream));
4430 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4434 st->info->last_dts = AV_NOPTS_VALUE;
4436 #if FF_API_LAVF_AVCTX
4437 FF_DISABLE_DEPRECATION_WARNINGS
4438 st->codec = avcodec_alloc_context3(c);
4444 FF_ENABLE_DEPRECATION_WARNINGS
4447 st->internal = av_mallocz(sizeof(*st->internal));
4451 st->codecpar = avcodec_parameters_alloc();
4455 st->internal->avctx = avcodec_alloc_context3(NULL);
4456 if (!st->internal->avctx)
4460 #if FF_API_LAVF_AVCTX
4461 FF_DISABLE_DEPRECATION_WARNINGS
4462 /* no default bitrate if decoding */
4463 st->codec->bit_rate = 0;
4464 FF_ENABLE_DEPRECATION_WARNINGS
4467 /* default pts setting is MPEG-like */
4468 avpriv_set_pts_info(st, 33, 1, 90000);
4469 /* we set the current DTS to 0 so that formats without any timestamps
4470 * but durations get some timestamps, formats with some unknown
4471 * timestamps have their first few packets buffered and the
4472 * timestamps corrected before they are returned to the user */
4473 st->cur_dts = RELATIVE_TS_BASE;
4475 st->cur_dts = AV_NOPTS_VALUE;
4478 st->index = s->nb_streams;
4479 st->start_time = AV_NOPTS_VALUE;
4480 st->duration = AV_NOPTS_VALUE;
4481 st->first_dts = AV_NOPTS_VALUE;
4482 st->probe_packets = MAX_PROBE_PACKETS;
4483 st->pts_wrap_reference = AV_NOPTS_VALUE;
4484 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4486 st->last_IP_pts = AV_NOPTS_VALUE;
4487 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4488 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4489 st->pts_buffer[i] = AV_NOPTS_VALUE;
4491 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4493 #if FF_API_R_FRAME_RATE
4494 st->info->last_dts = AV_NOPTS_VALUE;
4496 st->info->fps_first_dts = AV_NOPTS_VALUE;
4497 st->info->fps_last_dts = AV_NOPTS_VALUE;
4499 st->inject_global_side_data = s->internal->inject_global_side_data;
4501 st->internal->need_context_update = 1;
4503 s->streams[s->nb_streams++] = st;
4510 AVProgram *av_new_program(AVFormatContext *ac, int id)
4512 AVProgram *program = NULL;
4515 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4517 for (i = 0; i < ac->nb_programs; i++)
4518 if (ac->programs[i]->id == id)
4519 program = ac->programs[i];
4522 program = av_mallocz(sizeof(AVProgram));
4525 dynarray_add(&ac->programs, &ac->nb_programs, program);
4526 program->discard = AVDISCARD_NONE;
4529 program->pts_wrap_reference = AV_NOPTS_VALUE;
4530 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4532 program->start_time =
4533 program->end_time = AV_NOPTS_VALUE;
4538 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4539 int64_t start, int64_t end, const char *title)
4541 AVChapter *chapter = NULL;
4544 if (end != AV_NOPTS_VALUE && start > end) {
4545 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4549 for (i = 0; i < s->nb_chapters; i++)
4550 if (s->chapters[i]->id == id)
4551 chapter = s->chapters[i];
4554 chapter = av_mallocz(sizeof(AVChapter));
4557 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4559 av_dict_set(&chapter->metadata, "title", title, 0);
4561 chapter->time_base = time_base;
4562 chapter->start = start;
4568 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4571 AVProgram *program = NULL;
4574 if (idx >= ac->nb_streams) {
4575 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4579 for (i = 0; i < ac->nb_programs; i++) {
4580 if (ac->programs[i]->id != progid)
4582 program = ac->programs[i];
4583 for (j = 0; j < program->nb_stream_indexes; j++)
4584 if (program->stream_index[j] == idx)
4587 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4590 program->stream_index = tmp;
4591 program->stream_index[program->nb_stream_indexes++] = idx;
4596 uint64_t ff_ntp_time(void)
4598 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4601 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4604 char *q, buf1[20], c;
4605 int nd, len, percentd_found;
4617 while (av_isdigit(*p))
4618 nd = nd * 10 + *p++ - '0';
4620 } while (av_isdigit(c));
4626 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4631 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4633 if ((q - buf + len) > buf_size - 1)
4635 memcpy(q, buf1, len);
4643 if ((q - buf) < buf_size - 1)
4647 if (!percentd_found)
4656 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4658 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4661 void av_url_split(char *proto, int proto_size,
4662 char *authorization, int authorization_size,
4663 char *hostname, int hostname_size,
4664 int *port_ptr, char *path, int path_size, const char *url)
4666 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4672 if (authorization_size > 0)
4673 authorization[0] = 0;
4674 if (hostname_size > 0)
4679 /* parse protocol */
4680 if ((p = strchr(url, ':'))) {
4681 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4688 /* no protocol means plain filename */
4689 av_strlcpy(path, url, path_size);
4693 /* separate path from hostname */
4694 ls = strchr(p, '/');
4695 ls2 = strchr(p, '?');
4699 ls = FFMIN(ls, ls2);
4701 av_strlcpy(path, ls, path_size);
4703 ls = &p[strlen(p)]; // XXX
4705 /* the rest is hostname, use that to parse auth/port */
4707 /* authorization (user[:pass]@hostname) */
4709 while ((at = strchr(p, '@')) && at < ls) {
4710 av_strlcpy(authorization, at2,
4711 FFMIN(authorization_size, at + 1 - at2));
4712 p = at + 1; /* skip '@' */
4715 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4717 av_strlcpy(hostname, p + 1,
4718 FFMIN(hostname_size, brk - p));
4719 if (brk[1] == ':' && port_ptr)
4720 *port_ptr = atoi(brk + 2);
4721 } else if ((col = strchr(p, ':')) && col < ls) {
4722 av_strlcpy(hostname, p,
4723 FFMIN(col + 1 - p, hostname_size));
4725 *port_ptr = atoi(col + 1);
4727 av_strlcpy(hostname, p,
4728 FFMIN(ls + 1 - p, hostname_size));
4732 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4735 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4738 'C', 'D', 'E', 'F' };
4739 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4742 'c', 'd', 'e', 'f' };
4743 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4745 for (i = 0; i < s; i++) {
4746 buff[i * 2] = hex_table[src[i] >> 4];
4747 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4753 int ff_hex_to_data(uint8_t *data, const char *p)
4760 p += strspn(p, SPACE_CHARS);
4763 c = av_toupper((unsigned char) *p++);
4764 if (c >= '0' && c <= '9')
4766 else if (c >= 'A' && c <= 'F')
4781 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4782 unsigned int pts_num, unsigned int pts_den)
4785 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4786 if (new_tb.num != pts_num)
4787 av_log(NULL, AV_LOG_DEBUG,
4788 "st:%d removing common factor %d from timebase\n",
4789 s->index, pts_num / new_tb.num);
4791 av_log(NULL, AV_LOG_WARNING,
4792 "st:%d has too large timebase, reducing\n", s->index);
4794 if (new_tb.num <= 0 || new_tb.den <= 0) {
4795 av_log(NULL, AV_LOG_ERROR,
4796 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4797 new_tb.num, new_tb.den,
4801 s->time_base = new_tb;
4802 #if FF_API_LAVF_AVCTX
4803 FF_DISABLE_DEPRECATION_WARNINGS
4804 s->codec->pkt_timebase = new_tb;
4805 FF_ENABLE_DEPRECATION_WARNINGS
4807 s->internal->avctx->pkt_timebase = new_tb;
4808 s->pts_wrap_bits = pts_wrap_bits;
4811 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4814 const char *ptr = str;
4816 /* Parse key=value pairs. */
4819 char *dest = NULL, *dest_end;
4820 int key_len, dest_len = 0;
4822 /* Skip whitespace and potential commas. */
4823 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4830 if (!(ptr = strchr(key, '=')))
4833 key_len = ptr - key;
4835 callback_get_buf(context, key, key_len, &dest, &dest_len);
4836 dest_end = dest + dest_len - 1;
4840 while (*ptr && *ptr != '\"') {
4844 if (dest && dest < dest_end)
4848 if (dest && dest < dest_end)
4856 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4857 if (dest && dest < dest_end)
4865 int ff_find_stream_index(AVFormatContext *s, int id)
4868 for (i = 0; i < s->nb_streams; i++)
4869 if (s->streams[i]->id == id)
4874 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4878 unsigned int codec_tag;
4879 if (ofmt->query_codec)
4880 return ofmt->query_codec(codec_id, std_compliance);
4881 else if (ofmt->codec_tag)
4882 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4883 else if (codec_id == ofmt->video_codec ||
4884 codec_id == ofmt->audio_codec ||
4885 codec_id == ofmt->subtitle_codec ||
4886 codec_id == ofmt->data_codec)
4889 return AVERROR_PATCHWELCOME;
4892 int avformat_network_init(void)
4896 if ((ret = ff_network_init()) < 0)
4898 if ((ret = ff_tls_init()) < 0)
4904 int avformat_network_deinit(void)
4913 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4914 uint64_t channel_layout, int32_t sample_rate,
4915 int32_t width, int32_t height)
4921 return AVERROR(EINVAL);
4924 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4926 if (channel_layout) {
4928 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4932 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4934 if (width || height) {
4936 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4938 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4940 return AVERROR(ENOMEM);
4941 bytestream_put_le32(&data, flags);
4943 bytestream_put_le32(&data, channels);
4945 bytestream_put_le64(&data, channel_layout);
4947 bytestream_put_le32(&data, sample_rate);
4948 if (width || height) {
4949 bytestream_put_le32(&data, width);
4950 bytestream_put_le32(&data, height);
4955 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4957 AVRational undef = {0, 1};
4958 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4959 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4960 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4962 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4963 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4964 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4965 stream_sample_aspect_ratio = undef;
4967 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4968 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4969 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4970 frame_sample_aspect_ratio = undef;
4972 if (stream_sample_aspect_ratio.num)
4973 return stream_sample_aspect_ratio;
4975 return frame_sample_aspect_ratio;
4978 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4980 AVRational fr = st->r_frame_rate;
4981 AVRational codec_fr = st->internal->avctx->framerate;
4982 AVRational avg_fr = st->avg_frame_rate;
4984 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4985 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4990 if (st->internal->avctx->ticks_per_frame > 1) {
4991 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4992 (fr.num == 0 || av_q2d(codec_fr) < av_q2d(fr)*0.7 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1))
4999 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5002 if (*spec <= '9' && *spec >= '0') /* opt:index */
5003 return strtol(spec, NULL, 0) == st->index;
5004 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5005 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5006 enum AVMediaType type;
5010 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5011 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5012 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5013 case 'd': type = AVMEDIA_TYPE_DATA; break;
5014 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5015 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5016 default: av_assert0(0);
5018 #if FF_API_LAVF_AVCTX
5019 FF_DISABLE_DEPRECATION_WARNINGS
5020 if (type != st->codecpar->codec_type
5021 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5023 FF_ENABLE_DEPRECATION_WARNINGS
5025 if (type != st->codecpar->codec_type)
5028 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5030 if (*spec++ == ':') { /* possibly followed by :index */
5031 int i, index = strtol(spec, NULL, 0);
5032 for (i = 0; i < s->nb_streams; i++) {
5033 #if FF_API_LAVF_AVCTX
5034 FF_DISABLE_DEPRECATION_WARNINGS
5035 if ((s->streams[i]->codecpar->codec_type == type
5036 || s->streams[i]->codec->codec_type == type
5038 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5040 return i == st->index;
5041 FF_ENABLE_DEPRECATION_WARNINGS
5043 if ((s->streams[i]->codecpar->codec_type == type) &&
5044 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5046 return i == st->index;
5052 } else if (*spec == 'p' && *(spec + 1) == ':') {
5056 prog_id = strtol(spec, &endptr, 0);
5057 for (i = 0; i < s->nb_programs; i++) {
5058 if (s->programs[i]->id != prog_id)
5061 if (*endptr++ == ':') {
5062 int stream_idx = strtol(endptr, NULL, 0);
5063 return stream_idx >= 0 &&
5064 stream_idx < s->programs[i]->nb_stream_indexes &&
5065 st->index == s->programs[i]->stream_index[stream_idx];
5068 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5069 if (st->index == s->programs[i]->stream_index[j])
5073 } else if (*spec == '#' ||
5074 (*spec == 'i' && *(spec + 1) == ':')) {
5077 spec += 1 + (*spec == 'i');
5078 stream_id = strtol(spec, &endptr, 0);
5080 return stream_id == st->id;
5081 } else if (*spec == 'm' && *(spec + 1) == ':') {
5082 AVDictionaryEntry *tag;
5087 val = strchr(spec, ':');
5089 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5091 return AVERROR(ENOMEM);
5093 tag = av_dict_get(st->metadata, key, NULL, 0);
5095 if (!val || !strcmp(tag->value, val + 1))
5104 } else if (*spec == 'u') {
5105 AVCodecParameters *par = st->codecpar;
5106 #if FF_API_LAVF_AVCTX
5107 FF_DISABLE_DEPRECATION_WARNINGS
5108 AVCodecContext *codec = st->codec;
5109 FF_ENABLE_DEPRECATION_WARNINGS
5112 switch (par->codec_type) {
5113 case AVMEDIA_TYPE_AUDIO:
5114 val = par->sample_rate && par->channels;
5115 #if FF_API_LAVF_AVCTX
5116 val = val || (codec->sample_rate && codec->channels);
5118 if (par->format == AV_SAMPLE_FMT_NONE
5119 #if FF_API_LAVF_AVCTX
5120 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5125 case AVMEDIA_TYPE_VIDEO:
5126 val = par->width && par->height;
5127 #if FF_API_LAVF_AVCTX
5128 val = val || (codec->width && codec->height);
5130 if (par->format == AV_PIX_FMT_NONE
5131 #if FF_API_LAVF_AVCTX
5132 && codec->pix_fmt == AV_PIX_FMT_NONE
5137 case AVMEDIA_TYPE_UNKNOWN:
5144 #if FF_API_LAVF_AVCTX
5145 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
5147 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
5149 } else if (!*spec) /* empty specifier, matches everything */
5152 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5153 return AVERROR(EINVAL);
5156 int ff_generate_avci_extradata(AVStream *st)
5158 static const uint8_t avci100_1080p_extradata[] = {
5160 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5161 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5162 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5163 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5164 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5165 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5166 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5167 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5168 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5170 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5173 static const uint8_t avci100_1080i_extradata[] = {
5175 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5176 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5177 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5178 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5179 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5180 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5181 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5182 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5183 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5184 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5185 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5187 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5190 static const uint8_t avci50_1080p_extradata[] = {
5192 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5193 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5194 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5195 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5196 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5197 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5198 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5199 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5200 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5202 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5205 static const uint8_t avci50_1080i_extradata[] = {
5207 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5208 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5209 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5210 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5211 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5212 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5213 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5214 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5215 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5216 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5217 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5219 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5222 static const uint8_t avci100_720p_extradata[] = {
5224 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5225 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5226 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5227 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5228 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5229 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5230 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5231 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5232 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5233 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5235 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5238 static const uint8_t avci50_720p_extradata[] = {
5240 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5241 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5242 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5243 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5244 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5245 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5246 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5247 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5248 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5250 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5254 const uint8_t *data = NULL;
5257 if (st->codecpar->width == 1920) {
5258 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5259 data = avci100_1080p_extradata;
5260 size = sizeof(avci100_1080p_extradata);
5262 data = avci100_1080i_extradata;
5263 size = sizeof(avci100_1080i_extradata);
5265 } else if (st->codecpar->width == 1440) {
5266 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5267 data = avci50_1080p_extradata;
5268 size = sizeof(avci50_1080p_extradata);
5270 data = avci50_1080i_extradata;
5271 size = sizeof(avci50_1080i_extradata);
5273 } else if (st->codecpar->width == 1280) {
5274 data = avci100_720p_extradata;
5275 size = sizeof(avci100_720p_extradata);
5276 } else if (st->codecpar->width == 960) {
5277 data = avci50_720p_extradata;
5278 size = sizeof(avci50_720p_extradata);
5284 av_freep(&st->codecpar->extradata);
5285 if (ff_alloc_extradata(st->codecpar, size))
5286 return AVERROR(ENOMEM);
5287 memcpy(st->codecpar->extradata, data, size);
5292 uint8_t *av_stream_get_side_data(const AVStream *st,
5293 enum AVPacketSideDataType type, int *size)
5297 for (i = 0; i < st->nb_side_data; i++) {
5298 if (st->side_data[i].type == type) {
5300 *size = st->side_data[i].size;
5301 return st->side_data[i].data;
5307 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5308 uint8_t *data, size_t size)
5310 AVPacketSideData *sd, *tmp;
5313 for (i = 0; i < st->nb_side_data; i++) {
5314 sd = &st->side_data[i];
5316 if (sd->type == type) {
5317 av_freep(&sd->data);
5324 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5325 return AVERROR(ERANGE);
5327 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5329 return AVERROR(ENOMEM);
5332 st->side_data = tmp;
5335 sd = &st->side_data[st->nb_side_data - 1];
5343 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5347 uint8_t *data = av_malloc(size);
5352 ret = av_stream_add_side_data(st, type, data, size);
5361 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5364 const AVBitStreamFilter *bsf;
5366 AVCodecParameters *in_par;
5368 if (!(bsf = av_bsf_get_by_name(name))) {
5369 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5370 return AVERROR_BSF_NOT_FOUND;
5373 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5376 if (st->internal->nb_bsfcs) {
5377 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5378 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5380 in_par = st->codecpar;
5381 bsfc->time_base_in = st->time_base;
5384 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5389 if (args && bsfc->filter->priv_class) {
5390 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5391 const char * shorthand[2] = {NULL};
5394 shorthand[0] = opt->name;
5396 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5402 if ((ret = av_bsf_init(bsfc)) < 0) {
5407 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5412 av_log(NULL, AV_LOG_VERBOSE,
5413 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5414 name, args ? args : "");
5419 FF_DISABLE_DEPRECATION_WARNINGS
5420 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5421 AVBitStreamFilterContext *bsfc)
5425 AVPacket new_pkt = *pkt;
5426 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5427 &new_pkt.data, &new_pkt.size,
5428 pkt->data, pkt->size,
5429 pkt->flags & AV_PKT_FLAG_KEY);
5430 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5431 av_packet_unref(pkt);
5432 memset(pkt, 0, sizeof(*pkt));
5435 if(a == 0 && new_pkt.data != pkt->data) {
5436 uint8_t *t = av_malloc(new_pkt.size + AV_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
5438 memcpy(t, new_pkt.data, new_pkt.size);
5439 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5444 a = AVERROR(ENOMEM);
5448 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5449 av_buffer_default_free, NULL, 0);
5451 pkt->side_data = NULL;
5452 pkt->side_data_elems = 0;
5453 av_packet_unref(pkt);
5455 av_freep(&new_pkt.data);
5456 a = AVERROR(ENOMEM);
5460 av_log(codec, AV_LOG_ERROR,
5461 "Failed to open bitstream filter %s for stream %d with codec %s",
5462 bsfc->filter->name, pkt->stream_index,
5463 codec->codec ? codec->codec->name : "copy");
5473 FF_ENABLE_DEPRECATION_WARNINGS
5476 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5479 return AVERROR(EINVAL);
5481 if (!(s->oformat->flags & AVFMT_NOFILE))
5482 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5486 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5489 s->io_close(s, *pb);
5493 int ff_is_http_proto(char *filename) {
5494 const char *proto = avio_find_protocol_name(filename);
5495 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5498 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5500 AVDictionaryEntry *entry;
5501 int64_t parsed_timestamp;
5503 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5504 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5505 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5508 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5515 int ff_standardize_creation_time(AVFormatContext *s)
5518 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5520 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5524 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5529 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5531 if (size != AVPALETTE_SIZE) {
5532 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5533 return AVERROR_INVALIDDATA;
5535 memcpy(palette, side_data, AVPALETTE_SIZE);
5539 if (ret == CONTAINS_PAL) {
5541 for (i = 0; i < AVPALETTE_COUNT; i++)
5542 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5549 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5554 ret = av_bprint_finalize(buf, &str);
5557 if (!av_bprint_is_complete(buf)) {
5559 return AVERROR(ENOMEM);
5562 par->extradata = str;
5563 /* Note: the string is NUL terminated (so extradata can be read as a
5564 * string), but the ending character is not accounted in the size (in
5565 * binary formats you are likely not supposed to mux that character). When
5566 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5568 par->extradata_size = buf->len;
5572 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5573 AVStream *ost, const AVStream *ist,
5574 enum AVTimebaseSource copy_tb)
5576 //TODO: use [io]st->internal->avctx
5577 const AVCodecContext *dec_ctx = ist->codec;
5578 AVCodecContext *enc_ctx = ost->codec;
5580 enc_ctx->time_base = ist->time_base;
5582 * Avi is a special case here because it supports variable fps but
5583 * having the fps and timebase differe significantly adds quite some
5586 if (!strcmp(ofmt->name, "avi")) {
5587 #if FF_API_R_FRAME_RATE
5588 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5589 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5590 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5591 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5592 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5593 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5594 enc_ctx->time_base.num = ist->r_frame_rate.den;
5595 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5596 enc_ctx->ticks_per_frame = 2;
5599 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5600 && av_q2d(ist->time_base) < 1.0/500
5601 || copy_tb == AVFMT_TBCF_DECODER) {
5602 enc_ctx->time_base = dec_ctx->time_base;
5603 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5604 enc_ctx->time_base.den *= 2;
5605 enc_ctx->ticks_per_frame = 2;
5607 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5608 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5609 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5610 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5611 && av_q2d(ist->time_base) < 1.0/500
5612 || copy_tb == AVFMT_TBCF_DECODER) {
5613 enc_ctx->time_base = dec_ctx->time_base;
5614 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5618 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5619 && dec_ctx->time_base.num < dec_ctx->time_base.den
5620 && dec_ctx->time_base.num > 0
5621 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5622 enc_ctx->time_base = dec_ctx->time_base;
5625 if (ost->avg_frame_rate.num)
5626 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5628 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5629 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5634 AVRational av_stream_get_codec_timebase(const AVStream *st)
5636 // See avformat_transfer_internal_stream_timing_info() TODO.
5637 #if FF_API_LAVF_AVCTX
5638 FF_DISABLE_DEPRECATION_WARNINGS
5639 return st->codec->time_base;
5640 FF_ENABLE_DEPRECATION_WARNINGS
5642 return st->internal->avctx->time_base;
5646 void ff_format_set_url(AVFormatContext *s, char *url)
5651 av_strlcpy(s->filename, url, sizeof(s->filename));