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 int ff_packet_list_put(AVPacketList **packet_buffer,
448 AVPacketList **plast_pktl,
449 AVPacket *pkt, int flags)
451 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
455 return AVERROR(ENOMEM);
457 if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
458 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
463 // TODO: Adapt callers in this file so the line below can use
464 // av_packet_move_ref() to effectively move the reference
470 (*plast_pktl)->next = pktl;
472 *packet_buffer = pktl;
474 /* Add the packet in the buffered packet list. */
479 int avformat_queue_attached_pictures(AVFormatContext *s)
482 for (i = 0; i < s->nb_streams; i++)
483 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
484 s->streams[i]->discard < AVDISCARD_ALL) {
485 if (s->streams[i]->attached_pic.size <= 0) {
486 av_log(s, AV_LOG_WARNING,
487 "Attached picture on stream %d has invalid size, "
492 ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
493 &s->internal->raw_packet_buffer_end,
494 &s->streams[i]->attached_pic,
495 FF_PACKETLIST_FLAG_REF_PACKET);
502 static int update_stream_avctx(AVFormatContext *s)
505 for (i = 0; i < s->nb_streams; i++) {
506 AVStream *st = s->streams[i];
508 if (!st->internal->need_context_update)
511 /* close parser, because it depends on the codec */
512 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
513 av_parser_close(st->parser);
517 /* update internal codec context, for the parser */
518 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
522 #if FF_API_LAVF_AVCTX
523 FF_DISABLE_DEPRECATION_WARNINGS
524 /* update deprecated public codec context */
525 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
528 FF_ENABLE_DEPRECATION_WARNINGS
531 st->internal->need_context_update = 0;
537 int avformat_open_input(AVFormatContext **ps, const char *filename,
538 AVInputFormat *fmt, AVDictionary **options)
540 AVFormatContext *s = *ps;
542 AVDictionary *tmp = NULL;
543 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
545 if (!s && !(s = avformat_alloc_context()))
546 return AVERROR(ENOMEM);
548 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
549 return AVERROR(EINVAL);
555 av_dict_copy(&tmp, *options, 0);
557 if (s->pb) // must be before any goto fail
558 s->flags |= AVFMT_FLAG_CUSTOM_IO;
560 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
563 if (!(s->url = av_strdup(filename ? filename : ""))) {
564 ret = AVERROR(ENOMEM);
568 #if FF_API_FORMAT_FILENAME
569 FF_DISABLE_DEPRECATION_WARNINGS
570 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
571 FF_ENABLE_DEPRECATION_WARNINGS
573 if ((ret = init_input(s, filename, &tmp)) < 0)
575 s->probe_score = ret;
577 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
578 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
579 if (!s->protocol_whitelist) {
580 ret = AVERROR(ENOMEM);
585 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
586 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
587 if (!s->protocol_blacklist) {
588 ret = AVERROR(ENOMEM);
593 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
594 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
595 ret = AVERROR(EINVAL);
599 avio_skip(s->pb, s->skip_initial_bytes);
601 /* Check filename in case an image number is expected. */
602 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
603 if (!av_filename_number_test(filename)) {
604 ret = AVERROR(EINVAL);
609 s->duration = s->start_time = AV_NOPTS_VALUE;
611 /* Allocate private data. */
612 if (s->iformat->priv_data_size > 0) {
613 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
614 ret = AVERROR(ENOMEM);
617 if (s->iformat->priv_class) {
618 *(const AVClass **) s->priv_data = s->iformat->priv_class;
619 av_opt_set_defaults(s->priv_data);
620 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
625 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
627 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
630 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
631 if ((ret = s->iformat->read_header(s)) < 0)
635 s->metadata = s->internal->id3v2_meta;
636 s->internal->id3v2_meta = NULL;
637 } else if (s->internal->id3v2_meta) {
638 int level = AV_LOG_WARNING;
639 if (s->error_recognition & AV_EF_COMPLIANT)
640 level = AV_LOG_ERROR;
641 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
642 av_dict_free(&s->internal->id3v2_meta);
643 if (s->error_recognition & AV_EF_EXPLODE)
644 return AVERROR_INVALIDDATA;
647 if (id3v2_extra_meta) {
648 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
649 !strcmp(s->iformat->name, "tta")) {
650 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
652 if ((ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0)
654 if ((ret = ff_id3v2_parse_priv(s, &id3v2_extra_meta)) < 0)
657 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
659 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
661 if ((ret = avformat_queue_attached_pictures(s)) < 0)
664 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
665 s->internal->data_offset = avio_tell(s->pb);
667 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
669 update_stream_avctx(s);
671 for (i = 0; i < s->nb_streams; i++)
672 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
675 av_dict_free(options);
682 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
684 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
686 avformat_free_context(s);
691 /*******************************************************/
693 static void force_codec_ids(AVFormatContext *s, AVStream *st)
695 switch (st->codecpar->codec_type) {
696 case AVMEDIA_TYPE_VIDEO:
697 if (s->video_codec_id)
698 st->codecpar->codec_id = s->video_codec_id;
700 case AVMEDIA_TYPE_AUDIO:
701 if (s->audio_codec_id)
702 st->codecpar->codec_id = s->audio_codec_id;
704 case AVMEDIA_TYPE_SUBTITLE:
705 if (s->subtitle_codec_id)
706 st->codecpar->codec_id = s->subtitle_codec_id;
708 case AVMEDIA_TYPE_DATA:
709 if (s->data_codec_id)
710 st->codecpar->codec_id = s->data_codec_id;
715 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
717 if (st->request_probe>0) {
718 AVProbeData *pd = &st->probe_data;
720 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
724 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
726 av_log(s, AV_LOG_WARNING,
727 "Failed to reallocate probe buffer for stream %d\n",
732 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
733 pd->buf_size += pkt->size;
734 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
737 st->probe_packets = 0;
739 av_log(s, AV_LOG_WARNING,
740 "nothing to probe for stream %d\n", st->index);
744 end= s->internal->raw_packet_buffer_remaining_size <= 0
745 || st->probe_packets<= 0;
747 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
748 int score = set_codec_from_probe_data(s, st, pd);
749 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
753 st->request_probe = -1;
754 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
755 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
757 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
759 force_codec_ids(s, st);
765 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
767 int64_t ref = pkt->dts;
768 int i, pts_wrap_behavior;
769 int64_t pts_wrap_reference;
770 AVProgram *first_program;
772 if (ref == AV_NOPTS_VALUE)
774 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
776 ref &= (1LL << st->pts_wrap_bits)-1;
778 // reference time stamp should be 60 s before first time stamp
779 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
780 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
781 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
782 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
783 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
785 first_program = av_find_program_from_stream(s, NULL, stream_index);
787 if (!first_program) {
788 int default_stream_index = av_find_default_stream_index(s);
789 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
790 for (i = 0; i < s->nb_streams; i++) {
791 if (av_find_program_from_stream(s, NULL, i))
793 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
794 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
798 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
799 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
803 AVProgram *program = first_program;
805 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
806 pts_wrap_reference = program->pts_wrap_reference;
807 pts_wrap_behavior = program->pts_wrap_behavior;
810 program = av_find_program_from_stream(s, program, stream_index);
813 // update every program with differing pts_wrap_reference
814 program = first_program;
816 if (program->pts_wrap_reference != pts_wrap_reference) {
817 for (i = 0; i<program->nb_stream_indexes; i++) {
818 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
819 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
822 program->pts_wrap_reference = pts_wrap_reference;
823 program->pts_wrap_behavior = pts_wrap_behavior;
825 program = av_find_program_from_stream(s, program, stream_index);
831 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
837 AVPacketList *pktl = s->internal->raw_packet_buffer;
841 st = s->streams[pkt->stream_index];
842 if (s->internal->raw_packet_buffer_remaining_size <= 0)
843 if ((err = probe_codec(s, st, NULL)) < 0)
845 if (st->request_probe <= 0) {
846 s->internal->raw_packet_buffer = pktl->next;
847 s->internal->raw_packet_buffer_remaining_size += pkt->size;
856 ret = s->iformat->read_packet(s, pkt);
858 /* Some demuxers return FFERROR_REDO when they consume
859 data and discard it (ignored streams, junk, extradata).
860 We must re-call the demuxer to get the real packet. */
861 if (ret == FFERROR_REDO)
863 if (!pktl || ret == AVERROR(EAGAIN))
865 for (i = 0; i < s->nb_streams; i++) {
867 if (st->probe_packets || st->request_probe > 0)
868 if ((err = probe_codec(s, st, NULL)) < 0)
870 av_assert0(st->request_probe <= 0);
875 err = av_packet_make_refcounted(pkt);
879 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
880 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
881 av_log(s, AV_LOG_WARNING,
882 "Dropped corrupted packet (stream = %d)\n",
884 av_packet_unref(pkt);
888 if (pkt->stream_index >= (unsigned)s->nb_streams) {
889 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
893 st = s->streams[pkt->stream_index];
895 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
896 // correct first time stamps to negative values
897 if (!is_relative(st->first_dts))
898 st->first_dts = wrap_timestamp(st, st->first_dts);
899 if (!is_relative(st->start_time))
900 st->start_time = wrap_timestamp(st, st->start_time);
901 if (!is_relative(st->cur_dts))
902 st->cur_dts = wrap_timestamp(st, st->cur_dts);
905 pkt->dts = wrap_timestamp(st, pkt->dts);
906 pkt->pts = wrap_timestamp(st, pkt->pts);
908 force_codec_ids(s, st);
910 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
911 if (s->use_wallclock_as_timestamps)
912 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
914 if (!pktl && st->request_probe <= 0)
917 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
918 &s->internal->raw_packet_buffer_end,
922 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
924 if ((err = probe_codec(s, st, pkt)) < 0)
930 /**********************************************************/
932 static int determinable_frame_size(AVCodecContext *avctx)
934 switch(avctx->codec_id) {
935 case AV_CODEC_ID_MP1:
936 case AV_CODEC_ID_MP2:
937 case AV_CODEC_ID_MP3:
938 case AV_CODEC_ID_CODEC2:
946 * Return the frame duration in seconds. Return 0 if not available.
948 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
949 AVCodecParserContext *pc, AVPacket *pkt)
951 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
952 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
953 int frame_size, sample_rate;
955 #if FF_API_LAVF_AVCTX
956 FF_DISABLE_DEPRECATION_WARNINGS
957 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
958 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
959 FF_ENABLE_DEPRECATION_WARNINGS
964 switch (st->codecpar->codec_type) {
965 case AVMEDIA_TYPE_VIDEO:
966 if (st->r_frame_rate.num && !pc && s->iformat) {
967 *pnum = st->r_frame_rate.den;
968 *pden = st->r_frame_rate.num;
969 } else if (st->time_base.num * 1000LL > st->time_base.den) {
970 *pnum = st->time_base.num;
971 *pden = st->time_base.den;
972 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
973 av_assert0(st->internal->avctx->ticks_per_frame);
974 av_reduce(pnum, pden,
976 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
979 if (pc && pc->repeat_pict) {
980 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
981 av_reduce(pnum, pden,
982 (*pnum) * (1LL + pc->repeat_pict),
986 /* If this codec can be interlaced or progressive then we need
987 * a parser to compute duration of a packet. Thus if we have
988 * no parser in such case leave duration undefined. */
989 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
993 case AVMEDIA_TYPE_AUDIO:
994 if (st->internal->avctx_inited) {
995 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
996 sample_rate = st->internal->avctx->sample_rate;
998 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
999 sample_rate = st->codecpar->sample_rate;
1001 if (frame_size <= 0 || sample_rate <= 0)
1004 *pden = sample_rate;
1011 static int is_intra_only(enum AVCodecID id)
1013 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1016 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1021 static int has_decode_delay_been_guessed(AVStream *st)
1023 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1024 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1026 #if CONFIG_H264_DECODER
1027 if (st->internal->avctx->has_b_frames &&
1028 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1031 if (st->internal->avctx->has_b_frames<3)
1032 return st->nb_decoded_frames >= 7;
1033 else if (st->internal->avctx->has_b_frames<4)
1034 return st->nb_decoded_frames >= 18;
1036 return st->nb_decoded_frames >= 20;
1039 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1043 if (pktl == s->internal->packet_buffer_end)
1044 return s->internal->parse_queue;
1048 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1049 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1050 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1053 int delay = st->internal->avctx->has_b_frames;
1056 if (dts == AV_NOPTS_VALUE) {
1057 int64_t best_score = INT64_MAX;
1058 for (i = 0; i<delay; i++) {
1059 if (st->pts_reorder_error_count[i]) {
1060 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1061 if (score < best_score) {
1063 dts = pts_buffer[i];
1068 for (i = 0; i<delay; i++) {
1069 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1070 int64_t diff = FFABS(pts_buffer[i] - dts)
1071 + (uint64_t)st->pts_reorder_error[i];
1072 diff = FFMAX(diff, st->pts_reorder_error[i]);
1073 st->pts_reorder_error[i] = diff;
1074 st->pts_reorder_error_count[i]++;
1075 if (st->pts_reorder_error_count[i] > 250) {
1076 st->pts_reorder_error[i] >>= 1;
1077 st->pts_reorder_error_count[i] >>= 1;
1084 if (dts == AV_NOPTS_VALUE)
1085 dts = pts_buffer[0];
1091 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1092 * of the packets in a window.
1094 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1095 AVPacketList *pkt_buffer)
1097 AVStream *st = s->streams[stream_index];
1098 int delay = st->internal->avctx->has_b_frames;
1101 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1103 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1104 pts_buffer[i] = AV_NOPTS_VALUE;
1106 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1107 if (pkt_buffer->pkt.stream_index != stream_index)
1110 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1111 pts_buffer[0] = pkt_buffer->pkt.pts;
1112 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1113 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1115 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1120 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1121 int64_t dts, int64_t pts, AVPacket *pkt)
1123 AVStream *st = s->streams[stream_index];
1124 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1125 AVPacketList *pktl_it;
1129 if (st->first_dts != AV_NOPTS_VALUE ||
1130 dts == AV_NOPTS_VALUE ||
1131 st->cur_dts == AV_NOPTS_VALUE ||
1135 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1137 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1139 if (is_relative(pts))
1142 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1143 if (pktl_it->pkt.stream_index != stream_index)
1145 if (is_relative(pktl_it->pkt.pts))
1146 pktl_it->pkt.pts += shift;
1148 if (is_relative(pktl_it->pkt.dts))
1149 pktl_it->pkt.dts += shift;
1151 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1152 st->start_time = pktl_it->pkt.pts;
1153 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1154 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1158 if (has_decode_delay_been_guessed(st)) {
1159 update_dts_from_pts(s, stream_index, pktl);
1162 if (st->start_time == AV_NOPTS_VALUE) {
1163 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1164 st->start_time = pts;
1166 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1167 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1171 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1172 int stream_index, int duration)
1174 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1175 int64_t cur_dts = RELATIVE_TS_BASE;
1177 if (st->first_dts != AV_NOPTS_VALUE) {
1178 if (st->update_initial_durations_done)
1180 st->update_initial_durations_done = 1;
1181 cur_dts = st->first_dts;
1182 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1183 if (pktl->pkt.stream_index == stream_index) {
1184 if (pktl->pkt.pts != pktl->pkt.dts ||
1185 pktl->pkt.dts != AV_NOPTS_VALUE ||
1188 cur_dts -= duration;
1191 if (pktl && pktl->pkt.dts != st->first_dts) {
1192 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1193 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1197 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1200 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1201 st->first_dts = cur_dts;
1202 } else if (st->cur_dts != RELATIVE_TS_BASE)
1205 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1206 if (pktl->pkt.stream_index != stream_index)
1208 if ((pktl->pkt.pts == pktl->pkt.dts ||
1209 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1210 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1211 pktl->pkt.dts == st->first_dts ||
1212 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1213 !pktl->pkt.duration) {
1214 pktl->pkt.dts = cur_dts;
1215 if (!st->internal->avctx->has_b_frames)
1216 pktl->pkt.pts = cur_dts;
1217 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1218 pktl->pkt.duration = duration;
1221 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1224 st->cur_dts = cur_dts;
1227 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1228 AVCodecParserContext *pc, AVPacket *pkt,
1229 int64_t next_dts, int64_t next_pts)
1231 int num, den, presentation_delayed, delay, i;
1233 AVRational duration;
1234 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1235 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1237 if (s->flags & AVFMT_FLAG_NOFILLIN)
1240 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1241 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1242 if (st->last_dts_for_order_check <= pkt->dts) {
1245 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1246 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1248 st->last_dts_for_order_check);
1249 st->dts_misordered++;
1251 if (st->dts_ordered + st->dts_misordered > 250) {
1252 st->dts_ordered >>= 1;
1253 st->dts_misordered >>= 1;
1257 st->last_dts_for_order_check = pkt->dts;
1258 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1259 pkt->dts = AV_NOPTS_VALUE;
1262 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1263 pkt->dts = AV_NOPTS_VALUE;
1265 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1266 && !st->internal->avctx->has_b_frames)
1267 //FIXME Set low_delay = 0 when has_b_frames = 1
1268 st->internal->avctx->has_b_frames = 1;
1270 /* do we have a video B-frame ? */
1271 delay = st->internal->avctx->has_b_frames;
1272 presentation_delayed = 0;
1274 /* XXX: need has_b_frame, but cannot get it if the codec is
1275 * not initialized */
1277 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1278 presentation_delayed = 1;
1280 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1281 st->pts_wrap_bits < 63 &&
1282 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1283 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1284 pkt->dts -= 1LL << st->pts_wrap_bits;
1286 pkt->pts += 1LL << st->pts_wrap_bits;
1289 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1290 * We take the conservative approach and discard both.
1291 * Note: If this is misbehaving for an H.264 file, then possibly
1292 * presentation_delayed is not set correctly. */
1293 if (delay == 1 && pkt->dts == pkt->pts &&
1294 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1295 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1296 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1297 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1298 pkt->dts = AV_NOPTS_VALUE;
1301 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1302 if (pkt->duration == 0) {
1303 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1305 duration = (AVRational) {num, den};
1306 pkt->duration = av_rescale_rnd(1,
1307 num * (int64_t) st->time_base.den,
1308 den * (int64_t) st->time_base.num,
1313 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1314 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1316 /* Correct timestamps with byte offset if demuxers only have timestamps
1317 * on packet boundaries */
1318 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1319 /* this will estimate bitrate based on this frame's duration and size */
1320 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1321 if (pkt->pts != AV_NOPTS_VALUE)
1323 if (pkt->dts != AV_NOPTS_VALUE)
1327 /* This may be redundant, but it should not hurt. */
1328 if (pkt->dts != AV_NOPTS_VALUE &&
1329 pkt->pts != AV_NOPTS_VALUE &&
1330 pkt->pts > pkt->dts)
1331 presentation_delayed = 1;
1333 if (s->debug & FF_FDEBUG_TS)
1334 av_log(s, AV_LOG_TRACE,
1335 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1336 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1337 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1339 /* Interpolate PTS and DTS if they are not present. We skip H264
1340 * currently because delay and has_b_frames are not reliably set. */
1341 if ((delay == 0 || (delay == 1 && pc)) &&
1343 if (presentation_delayed) {
1344 /* DTS = decompression timestamp */
1345 /* PTS = presentation timestamp */
1346 if (pkt->dts == AV_NOPTS_VALUE)
1347 pkt->dts = st->last_IP_pts;
1348 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1349 if (pkt->dts == AV_NOPTS_VALUE)
1350 pkt->dts = st->cur_dts;
1352 /* This is tricky: the dts must be incremented by the duration
1353 * of the frame we are displaying, i.e. the last I- or P-frame. */
1354 if (st->last_IP_duration == 0)
1355 st->last_IP_duration = pkt->duration;
1356 if (pkt->dts != AV_NOPTS_VALUE)
1357 st->cur_dts = pkt->dts + st->last_IP_duration;
1358 if (pkt->dts != AV_NOPTS_VALUE &&
1359 pkt->pts == AV_NOPTS_VALUE &&
1360 st->last_IP_duration > 0 &&
1361 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1362 next_dts != next_pts &&
1363 next_pts != AV_NOPTS_VALUE)
1364 pkt->pts = next_dts;
1366 st->last_IP_duration = pkt->duration;
1367 st->last_IP_pts = pkt->pts;
1368 /* Cannot compute PTS if not present (we can compute it only
1369 * by knowing the future. */
1370 } else if (pkt->pts != AV_NOPTS_VALUE ||
1371 pkt->dts != AV_NOPTS_VALUE ||
1374 /* presentation is not delayed : PTS and DTS are the same */
1375 if (pkt->pts == AV_NOPTS_VALUE)
1376 pkt->pts = pkt->dts;
1377 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1379 if (pkt->pts == AV_NOPTS_VALUE)
1380 pkt->pts = st->cur_dts;
1381 pkt->dts = pkt->pts;
1382 if (pkt->pts != AV_NOPTS_VALUE)
1383 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1387 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1388 st->pts_buffer[0] = pkt->pts;
1389 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1390 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1392 if(has_decode_delay_been_guessed(st))
1393 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1395 // We skipped it above so we try here.
1397 // This should happen on the first packet
1398 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1399 if (pkt->dts > st->cur_dts)
1400 st->cur_dts = pkt->dts;
1402 if (s->debug & FF_FDEBUG_TS)
1403 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1404 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1407 if (is_intra_only(st->codecpar->codec_id))
1408 pkt->flags |= AV_PKT_FLAG_KEY;
1409 #if FF_API_CONVERGENCE_DURATION
1410 FF_DISABLE_DEPRECATION_WARNINGS
1412 pkt->convergence_duration = pc->convergence_duration;
1413 FF_ENABLE_DEPRECATION_WARNINGS
1417 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1419 AVPacketList *tmp = *pkt_buf;
1422 AVPacketList *pktl = tmp;
1424 av_packet_unref(&pktl->pkt);
1428 *pkt_buf_end = NULL;
1432 * Parse a packet, add all split parts to parse_queue.
1434 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1436 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1438 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1439 AVStream *st = s->streams[stream_index];
1440 uint8_t *data = pkt ? pkt->data : NULL;
1441 int size = pkt ? pkt->size : 0;
1442 int ret = 0, got_output = 0;
1445 av_init_packet(&flush_pkt);
1448 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1449 // preserve 0-size sync packets
1450 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1453 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1455 int64_t next_pts = pkt->pts;
1456 int64_t next_dts = pkt->dts;
1458 av_init_packet(&out_pkt);
1459 len = av_parser_parse2(st->parser, st->internal->avctx,
1460 &out_pkt.data, &out_pkt.size, data, size,
1461 pkt->pts, pkt->dts, pkt->pos);
1463 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1465 /* increment read pointer */
1469 got_output = !!out_pkt.size;
1474 if (pkt->side_data) {
1475 out_pkt.side_data = pkt->side_data;
1476 out_pkt.side_data_elems = pkt->side_data_elems;
1477 pkt->side_data = NULL;
1478 pkt->side_data_elems = 0;
1481 /* set the duration */
1482 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1483 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1484 if (st->internal->avctx->sample_rate > 0) {
1486 av_rescale_q_rnd(st->parser->duration,
1487 (AVRational) { 1, st->internal->avctx->sample_rate },
1493 out_pkt.stream_index = st->index;
1494 out_pkt.pts = st->parser->pts;
1495 out_pkt.dts = st->parser->dts;
1496 out_pkt.pos = st->parser->pos;
1497 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1499 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1500 out_pkt.pos = st->parser->frame_offset;
1502 if (st->parser->key_frame == 1 ||
1503 (st->parser->key_frame == -1 &&
1504 st->parser->pict_type == AV_PICTURE_TYPE_I))
1505 out_pkt.flags |= AV_PKT_FLAG_KEY;
1507 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1508 out_pkt.flags |= AV_PKT_FLAG_KEY;
1510 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1512 ret = ff_packet_list_put(&s->internal->parse_queue,
1513 &s->internal->parse_queue_end,
1514 &out_pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1515 av_packet_unref(&out_pkt);
1520 /* end of the stream => close and free the parser */
1521 if (pkt == &flush_pkt) {
1522 av_parser_close(st->parser);
1527 av_packet_unref(pkt);
1531 int ff_packet_list_get(AVPacketList **pkt_buffer,
1532 AVPacketList **pkt_buffer_end,
1536 av_assert0(*pkt_buffer);
1539 *pkt_buffer = pktl->next;
1541 *pkt_buffer_end = NULL;
1546 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1548 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1551 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1553 int ret = 0, i, got_packet = 0;
1554 AVDictionary *metadata = NULL;
1556 av_init_packet(pkt);
1558 while (!got_packet && !s->internal->parse_queue) {
1562 /* read next packet */
1563 ret = ff_read_packet(s, &cur_pkt);
1565 if (ret == AVERROR(EAGAIN))
1567 /* flush the parsers */
1568 for (i = 0; i < s->nb_streams; i++) {
1570 if (st->parser && st->need_parsing)
1571 parse_packet(s, NULL, st->index);
1573 /* all remaining packets are now in parse_queue =>
1574 * really terminate parsing */
1578 st = s->streams[cur_pkt.stream_index];
1580 /* update context if required */
1581 if (st->internal->need_context_update) {
1582 if (avcodec_is_open(st->internal->avctx)) {
1583 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1584 avcodec_close(st->internal->avctx);
1585 st->info->found_decoder = 0;
1588 /* close parser, because it depends on the codec */
1589 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1590 av_parser_close(st->parser);
1594 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1598 #if FF_API_LAVF_AVCTX
1599 FF_DISABLE_DEPRECATION_WARNINGS
1600 /* update deprecated public codec context */
1601 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1604 FF_ENABLE_DEPRECATION_WARNINGS
1607 st->internal->need_context_update = 0;
1610 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1611 cur_pkt.dts != AV_NOPTS_VALUE &&
1612 cur_pkt.pts < cur_pkt.dts) {
1613 av_log(s, AV_LOG_WARNING,
1614 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1615 cur_pkt.stream_index,
1616 av_ts2str(cur_pkt.pts),
1617 av_ts2str(cur_pkt.dts),
1620 if (s->debug & FF_FDEBUG_TS)
1621 av_log(s, AV_LOG_DEBUG,
1622 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1623 cur_pkt.stream_index,
1624 av_ts2str(cur_pkt.pts),
1625 av_ts2str(cur_pkt.dts),
1626 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1628 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1629 st->parser = av_parser_init(st->codecpar->codec_id);
1631 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1632 "%s, packets or times may be invalid.\n",
1633 avcodec_get_name(st->codecpar->codec_id));
1634 /* no parser available: just output the raw packets */
1635 st->need_parsing = AVSTREAM_PARSE_NONE;
1636 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1637 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1638 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1639 st->parser->flags |= PARSER_FLAG_ONCE;
1640 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1641 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1644 if (!st->need_parsing || !st->parser) {
1645 /* no parsing needed: we just output the packet as is */
1647 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1648 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1649 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1650 ff_reduce_index(s, st->index);
1651 av_add_index_entry(st, pkt->pos, pkt->dts,
1652 0, 0, AVINDEX_KEYFRAME);
1655 } else if (st->discard < AVDISCARD_ALL) {
1656 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1658 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1659 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1660 st->codecpar->channels = st->internal->avctx->channels;
1661 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1662 st->codecpar->codec_id = st->internal->avctx->codec_id;
1665 av_packet_unref(&cur_pkt);
1667 if (pkt->flags & AV_PKT_FLAG_KEY)
1668 st->skip_to_keyframe = 0;
1669 if (st->skip_to_keyframe) {
1670 av_packet_unref(&cur_pkt);
1678 if (!got_packet && s->internal->parse_queue)
1679 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1682 AVStream *st = s->streams[pkt->stream_index];
1683 int discard_padding = 0;
1684 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1685 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1686 int64_t sample = ts_to_samples(st, pts);
1687 int duration = ts_to_samples(st, pkt->duration);
1688 int64_t end_sample = sample + duration;
1689 if (duration > 0 && end_sample >= st->first_discard_sample &&
1690 sample < st->last_discard_sample)
1691 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1693 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1694 st->skip_samples = st->start_skip_samples;
1695 if (st->skip_samples || discard_padding) {
1696 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1698 AV_WL32(p, st->skip_samples);
1699 AV_WL32(p + 4, discard_padding);
1700 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1702 st->skip_samples = 0;
1705 if (st->inject_global_side_data) {
1706 for (i = 0; i < st->nb_side_data; i++) {
1707 AVPacketSideData *src_sd = &st->side_data[i];
1710 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1713 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1715 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1719 memcpy(dst_data, src_sd->data, src_sd->size);
1721 st->inject_global_side_data = 0;
1725 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1727 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1728 av_dict_copy(&s->metadata, metadata, 0);
1729 av_dict_free(&metadata);
1730 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1733 #if FF_API_LAVF_AVCTX
1734 update_stream_avctx(s);
1737 if (s->debug & FF_FDEBUG_TS)
1738 av_log(s, AV_LOG_DEBUG,
1739 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1740 "size=%d, duration=%"PRId64", flags=%d\n",
1742 av_ts2str(pkt->pts),
1743 av_ts2str(pkt->dts),
1744 pkt->size, pkt->duration, pkt->flags);
1749 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1751 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1757 ret = s->internal->packet_buffer
1758 ? ff_packet_list_get(&s->internal->packet_buffer,
1759 &s->internal->packet_buffer_end, pkt)
1760 : read_frame_internal(s, pkt);
1767 AVPacketList *pktl = s->internal->packet_buffer;
1770 AVPacket *next_pkt = &pktl->pkt;
1772 if (next_pkt->dts != AV_NOPTS_VALUE) {
1773 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1774 // last dts seen for this stream. if any of packets following
1775 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1776 int64_t last_dts = next_pkt->dts;
1777 av_assert2(wrap_bits <= 64);
1778 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1779 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1780 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1781 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1783 next_pkt->pts = pktl->pkt.dts;
1785 if (last_dts != AV_NOPTS_VALUE) {
1786 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1787 last_dts = pktl->pkt.dts;
1792 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1793 // Fixing the last reference frame had none pts issue (For MXF etc).
1794 // We only do this when
1796 // 2. we are not able to resolve a pts value for current packet.
1797 // 3. the packets for this stream at the end of the files had valid dts.
1798 next_pkt->pts = last_dts + next_pkt->duration;
1800 pktl = s->internal->packet_buffer;
1803 /* read packet from packet buffer, if there is data */
1804 st = s->streams[next_pkt->stream_index];
1805 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1806 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1807 ret = ff_packet_list_get(&s->internal->packet_buffer,
1808 &s->internal->packet_buffer_end, pkt);
1813 ret = read_frame_internal(s, pkt);
1815 if (pktl && ret != AVERROR(EAGAIN)) {
1822 ret = ff_packet_list_put(&s->internal->packet_buffer,
1823 &s->internal->packet_buffer_end,
1824 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1825 av_packet_unref(pkt);
1832 st = s->streams[pkt->stream_index];
1833 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1834 ff_reduce_index(s, st->index);
1835 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1838 if (is_relative(pkt->dts))
1839 pkt->dts -= RELATIVE_TS_BASE;
1840 if (is_relative(pkt->pts))
1841 pkt->pts -= RELATIVE_TS_BASE;
1846 /* XXX: suppress the packet queue */
1847 static void flush_packet_queue(AVFormatContext *s)
1851 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1852 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1853 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1855 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1858 /*******************************************************/
1861 int av_find_default_stream_index(AVFormatContext *s)
1865 int best_stream = 0;
1866 int best_score = INT_MIN;
1868 if (s->nb_streams <= 0)
1870 for (i = 0; i < s->nb_streams; i++) {
1873 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1874 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1876 if (st->codecpar->width && st->codecpar->height)
1880 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1881 if (st->codecpar->sample_rate)
1884 if (st->codec_info_nb_frames)
1887 if (st->discard != AVDISCARD_ALL)
1890 if (score > best_score) {
1898 /** Flush the frame reader. */
1899 void ff_read_frame_flush(AVFormatContext *s)
1904 flush_packet_queue(s);
1906 /* Reset read state for each stream. */
1907 for (i = 0; i < s->nb_streams; i++) {
1911 av_parser_close(st->parser);
1914 st->last_IP_pts = AV_NOPTS_VALUE;
1915 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1916 if (st->first_dts == AV_NOPTS_VALUE)
1917 st->cur_dts = RELATIVE_TS_BASE;
1919 /* We set the current DTS to an unspecified origin. */
1920 st->cur_dts = AV_NOPTS_VALUE;
1922 st->probe_packets = MAX_PROBE_PACKETS;
1924 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1925 st->pts_buffer[j] = AV_NOPTS_VALUE;
1927 if (s->internal->inject_global_side_data)
1928 st->inject_global_side_data = 1;
1930 st->skip_samples = 0;
1934 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1938 for (i = 0; i < s->nb_streams; i++) {
1939 AVStream *st = s->streams[i];
1942 av_rescale(timestamp,
1943 st->time_base.den * (int64_t) ref_st->time_base.num,
1944 st->time_base.num * (int64_t) ref_st->time_base.den);
1948 void ff_reduce_index(AVFormatContext *s, int stream_index)
1950 AVStream *st = s->streams[stream_index];
1951 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1953 if ((unsigned) st->nb_index_entries >= max_entries) {
1955 for (i = 0; 2 * i < st->nb_index_entries; i++)
1956 st->index_entries[i] = st->index_entries[2 * i];
1957 st->nb_index_entries = i;
1961 int ff_add_index_entry(AVIndexEntry **index_entries,
1962 int *nb_index_entries,
1963 unsigned int *index_entries_allocated_size,
1964 int64_t pos, int64_t timestamp,
1965 int size, int distance, int flags)
1967 AVIndexEntry *entries, *ie;
1970 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1973 if (timestamp == AV_NOPTS_VALUE)
1974 return AVERROR(EINVAL);
1976 if (size < 0 || size > 0x3FFFFFFF)
1977 return AVERROR(EINVAL);
1979 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1980 timestamp -= RELATIVE_TS_BASE;
1982 entries = av_fast_realloc(*index_entries,
1983 index_entries_allocated_size,
1984 (*nb_index_entries + 1) *
1985 sizeof(AVIndexEntry));
1989 *index_entries = entries;
1991 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1992 timestamp, AVSEEK_FLAG_ANY);
1995 index = (*nb_index_entries)++;
1996 ie = &entries[index];
1997 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1999 ie = &entries[index];
2000 if (ie->timestamp != timestamp) {
2001 if (ie->timestamp <= timestamp)
2003 memmove(entries + index + 1, entries + index,
2004 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2005 (*nb_index_entries)++;
2006 } else if (ie->pos == pos && distance < ie->min_distance)
2007 // do not reduce the distance
2008 distance = ie->min_distance;
2012 ie->timestamp = timestamp;
2013 ie->min_distance = distance;
2020 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2021 int size, int distance, int flags)
2023 timestamp = wrap_timestamp(st, timestamp);
2024 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2025 &st->index_entries_allocated_size, pos,
2026 timestamp, size, distance, flags);
2029 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2030 int64_t wanted_timestamp, int flags)
2038 // Optimize appending index entries at the end.
2039 if (b && entries[b - 1].timestamp < wanted_timestamp)
2045 // Search for the next non-discarded packet.
2046 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2048 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2054 timestamp = entries[m].timestamp;
2055 if (timestamp >= wanted_timestamp)
2057 if (timestamp <= wanted_timestamp)
2060 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2062 if (!(flags & AVSEEK_FLAG_ANY))
2063 while (m >= 0 && m < nb_entries &&
2064 !(entries[m].flags & AVINDEX_KEYFRAME))
2065 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2067 if (m == nb_entries)
2072 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2075 int64_t pos_delta = 0;
2077 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2078 const char *proto = avio_find_protocol_name(s->url);
2081 av_log(s, AV_LOG_INFO,
2082 "Protocol name not provided, cannot determine if input is local or "
2083 "a network protocol, buffers and access patterns cannot be configured "
2084 "optimally without knowing the protocol\n");
2087 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2090 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2091 AVStream *st1 = s->streams[ist1];
2092 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2093 AVStream *st2 = s->streams[ist2];
2099 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2100 AVIndexEntry *e1 = &st1->index_entries[i1];
2101 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2103 skip = FFMAX(skip, e1->size);
2104 for (; i2 < st2->nb_index_entries; i2++) {
2105 AVIndexEntry *e2 = &st2->index_entries[i2];
2106 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2107 if (e2_pts - e1_pts < time_tolerance)
2109 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2117 /* XXX This could be adjusted depending on protocol*/
2118 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2119 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2120 ffio_set_buf_size(s->pb, pos_delta);
2121 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2124 if (skip < (1<<23)) {
2125 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2129 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2131 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2132 wanted_timestamp, flags);
2135 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2136 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2138 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2139 if (stream_index >= 0)
2140 ts = wrap_timestamp(s->streams[stream_index], ts);
2144 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2145 int64_t target_ts, int flags)
2147 AVInputFormat *avif = s->iformat;
2148 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2149 int64_t ts_min, ts_max, ts;
2154 if (stream_index < 0)
2157 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2160 ts_min = AV_NOPTS_VALUE;
2161 pos_limit = -1; // GCC falsely says it may be uninitialized.
2163 st = s->streams[stream_index];
2164 if (st->index_entries) {
2167 /* FIXME: Whole function must be checked for non-keyframe entries in
2168 * index case, especially read_timestamp(). */
2169 index = av_index_search_timestamp(st, target_ts,
2170 flags | AVSEEK_FLAG_BACKWARD);
2171 index = FFMAX(index, 0);
2172 e = &st->index_entries[index];
2174 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2176 ts_min = e->timestamp;
2177 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2178 pos_min, av_ts2str(ts_min));
2180 av_assert1(index == 0);
2183 index = av_index_search_timestamp(st, target_ts,
2184 flags & ~AVSEEK_FLAG_BACKWARD);
2185 av_assert0(index < st->nb_index_entries);
2187 e = &st->index_entries[index];
2188 av_assert1(e->timestamp >= target_ts);
2190 ts_max = e->timestamp;
2191 pos_limit = pos_max - e->min_distance;
2192 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2193 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2197 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2198 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2203 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2206 ff_read_frame_flush(s);
2207 ff_update_cur_dts(s, st, ts);
2212 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2213 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2215 int64_t step = 1024;
2216 int64_t limit, ts_max;
2217 int64_t filesize = avio_size(s->pb);
2218 int64_t pos_max = filesize - 1;
2221 pos_max = FFMAX(0, (pos_max) - step);
2222 ts_max = ff_read_timestamp(s, stream_index,
2223 &pos_max, limit, read_timestamp);
2225 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2226 if (ts_max == AV_NOPTS_VALUE)
2230 int64_t tmp_pos = pos_max + 1;
2231 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2232 &tmp_pos, INT64_MAX, read_timestamp);
2233 if (tmp_ts == AV_NOPTS_VALUE)
2235 av_assert0(tmp_pos > pos_max);
2238 if (tmp_pos >= filesize)
2250 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2251 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2252 int64_t ts_min, int64_t ts_max,
2253 int flags, int64_t *ts_ret,
2254 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2255 int64_t *, int64_t))
2262 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2264 if (ts_min == AV_NOPTS_VALUE) {
2265 pos_min = s->internal->data_offset;
2266 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2267 if (ts_min == AV_NOPTS_VALUE)
2271 if (ts_min >= target_ts) {
2276 if (ts_max == AV_NOPTS_VALUE) {
2277 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2279 pos_limit = pos_max;
2282 if (ts_max <= target_ts) {
2287 av_assert0(ts_min < ts_max);
2290 while (pos_min < pos_limit) {
2291 av_log(s, AV_LOG_TRACE,
2292 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2293 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2294 av_assert0(pos_limit <= pos_max);
2296 if (no_change == 0) {
2297 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2298 // interpolate position (better than dichotomy)
2299 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2301 pos_min - approximate_keyframe_distance;
2302 } else if (no_change == 1) {
2303 // bisection if interpolation did not change min / max pos last time
2304 pos = (pos_min + pos_limit) >> 1;
2306 /* linear search if bisection failed, can only happen if there
2307 * are very few or no keyframes between min/max */
2312 else if (pos > pos_limit)
2316 // May pass pos_limit instead of -1.
2317 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2322 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2323 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2324 pos_min, pos, pos_max,
2325 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2326 pos_limit, start_pos, no_change);
2327 if (ts == AV_NOPTS_VALUE) {
2328 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2331 if (target_ts <= ts) {
2332 pos_limit = start_pos - 1;
2336 if (target_ts >= ts) {
2342 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2343 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2346 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2348 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2349 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2350 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2356 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2357 int64_t pos, int flags)
2359 int64_t pos_min, pos_max;
2361 pos_min = s->internal->data_offset;
2362 pos_max = avio_size(s->pb) - 1;
2366 else if (pos > pos_max)
2369 avio_seek(s->pb, pos, SEEK_SET);
2371 s->io_repositioned = 1;
2376 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2377 int64_t timestamp, int flags)
2384 st = s->streams[stream_index];
2386 index = av_index_search_timestamp(st, timestamp, flags);
2388 if (index < 0 && st->nb_index_entries &&
2389 timestamp < st->index_entries[0].timestamp)
2392 if (index < 0 || index == st->nb_index_entries - 1) {
2396 if (st->nb_index_entries) {
2397 av_assert0(st->index_entries);
2398 ie = &st->index_entries[st->nb_index_entries - 1];
2399 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2401 ff_update_cur_dts(s, st, ie->timestamp);
2403 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2409 read_status = av_read_frame(s, &pkt);
2410 } while (read_status == AVERROR(EAGAIN));
2411 if (read_status < 0)
2413 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2414 if (pkt.flags & AV_PKT_FLAG_KEY) {
2415 av_packet_unref(&pkt);
2418 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2419 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);
2420 av_packet_unref(&pkt);
2424 av_packet_unref(&pkt);
2426 index = av_index_search_timestamp(st, timestamp, flags);
2431 ff_read_frame_flush(s);
2432 if (s->iformat->read_seek)
2433 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2435 ie = &st->index_entries[index];
2436 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2438 ff_update_cur_dts(s, st, ie->timestamp);
2443 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2444 int64_t timestamp, int flags)
2449 if (flags & AVSEEK_FLAG_BYTE) {
2450 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2452 ff_read_frame_flush(s);
2453 return seek_frame_byte(s, stream_index, timestamp, flags);
2456 if (stream_index < 0) {
2457 stream_index = av_find_default_stream_index(s);
2458 if (stream_index < 0)
2461 st = s->streams[stream_index];
2462 /* timestamp for default must be expressed in AV_TIME_BASE units */
2463 timestamp = av_rescale(timestamp, st->time_base.den,
2464 AV_TIME_BASE * (int64_t) st->time_base.num);
2467 /* first, we try the format specific seek */
2468 if (s->iformat->read_seek) {
2469 ff_read_frame_flush(s);
2470 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2476 if (s->iformat->read_timestamp &&
2477 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2478 ff_read_frame_flush(s);
2479 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2480 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2481 ff_read_frame_flush(s);
2482 return seek_frame_generic(s, stream_index, timestamp, flags);
2487 int av_seek_frame(AVFormatContext *s, int stream_index,
2488 int64_t timestamp, int flags)
2492 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2493 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2494 if ((flags & AVSEEK_FLAG_BACKWARD))
2498 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2499 flags & ~AVSEEK_FLAG_BACKWARD);
2502 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2505 ret = avformat_queue_attached_pictures(s);
2510 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2511 int64_t ts, int64_t max_ts, int flags)
2513 if (min_ts > ts || max_ts < ts)
2515 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2516 return AVERROR(EINVAL);
2519 flags |= AVSEEK_FLAG_ANY;
2520 flags &= ~AVSEEK_FLAG_BACKWARD;
2522 if (s->iformat->read_seek2) {
2524 ff_read_frame_flush(s);
2526 if (stream_index == -1 && s->nb_streams == 1) {
2527 AVRational time_base = s->streams[0]->time_base;
2528 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2529 min_ts = av_rescale_rnd(min_ts, time_base.den,
2530 time_base.num * (int64_t)AV_TIME_BASE,
2531 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2532 max_ts = av_rescale_rnd(max_ts, time_base.den,
2533 time_base.num * (int64_t)AV_TIME_BASE,
2534 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2538 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2542 ret = avformat_queue_attached_pictures(s);
2546 if (s->iformat->read_timestamp) {
2547 // try to seek via read_timestamp()
2550 // Fall back on old API if new is not implemented but old is.
2551 // Note the old API has somewhat different semantics.
2552 if (s->iformat->read_seek || 1) {
2553 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2554 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2555 if (ret<0 && ts != min_ts && max_ts != ts) {
2556 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2558 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2563 // try some generic seek like seek_frame_generic() but with new ts semantics
2564 return -1; //unreachable
2567 int avformat_flush(AVFormatContext *s)
2569 ff_read_frame_flush(s);
2573 /*******************************************************/
2576 * Return TRUE if the stream has accurate duration in any stream.
2578 * @return TRUE if the stream has accurate duration for at least one component.
2580 static int has_duration(AVFormatContext *ic)
2585 for (i = 0; i < ic->nb_streams; i++) {
2586 st = ic->streams[i];
2587 if (st->duration != AV_NOPTS_VALUE)
2590 if (ic->duration != AV_NOPTS_VALUE)
2596 * Estimate the stream timings from the one of each components.
2598 * Also computes the global bitrate if possible.
2600 static void update_stream_timings(AVFormatContext *ic)
2602 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2603 int64_t duration, duration1, filesize;
2608 start_time = INT64_MAX;
2609 start_time_text = INT64_MAX;
2610 end_time = INT64_MIN;
2611 end_time_text = INT64_MIN;
2612 duration = INT64_MIN;
2613 for (i = 0; i < ic->nb_streams; i++) {
2614 st = ic->streams[i];
2615 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2616 start_time1 = av_rescale_q(st->start_time, st->time_base,
2618 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2619 if (start_time1 < start_time_text)
2620 start_time_text = start_time1;
2622 start_time = FFMIN(start_time, start_time1);
2623 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2625 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2626 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2627 end_time1 += start_time1;
2628 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2629 end_time_text = FFMAX(end_time_text, end_time1);
2631 end_time = FFMAX(end_time, end_time1);
2633 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2634 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2635 p->start_time = start_time1;
2636 if (p->end_time < end_time1)
2637 p->end_time = end_time1;
2640 if (st->duration != AV_NOPTS_VALUE) {
2641 duration1 = av_rescale_q(st->duration, st->time_base,
2643 duration = FFMAX(duration, duration1);
2646 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2647 start_time = start_time_text;
2648 else if (start_time > start_time_text)
2649 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2651 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - end_time < AV_TIME_BASE)) {
2652 end_time = end_time_text;
2653 } else if (end_time < end_time_text) {
2654 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2657 if (start_time != INT64_MAX) {
2658 ic->start_time = start_time;
2659 if (end_time != INT64_MIN) {
2660 if (ic->nb_programs > 1) {
2661 for (i = 0; i < ic->nb_programs; i++) {
2662 p = ic->programs[i];
2663 if (p->start_time != AV_NOPTS_VALUE &&
2664 p->end_time > p->start_time &&
2665 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2666 duration = FFMAX(duration, p->end_time - p->start_time);
2668 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2669 duration = FFMAX(duration, end_time - start_time);
2673 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2674 ic->duration = duration;
2676 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2677 /* compute the bitrate */
2678 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2679 (double) ic->duration;
2680 if (bitrate >= 0 && bitrate <= INT64_MAX)
2681 ic->bit_rate = bitrate;
2685 static void fill_all_stream_timings(AVFormatContext *ic)
2690 update_stream_timings(ic);
2691 for (i = 0; i < ic->nb_streams; i++) {
2692 st = ic->streams[i];
2693 if (st->start_time == AV_NOPTS_VALUE) {
2694 if (ic->start_time != AV_NOPTS_VALUE)
2695 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2697 if (ic->duration != AV_NOPTS_VALUE)
2698 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2704 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2706 int64_t filesize, duration;
2707 int i, show_warning = 0;
2710 /* if bit_rate is already set, we believe it */
2711 if (ic->bit_rate <= 0) {
2712 int64_t bit_rate = 0;
2713 for (i = 0; i < ic->nb_streams; i++) {
2714 st = ic->streams[i];
2715 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2716 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2717 if (st->codecpar->bit_rate > 0) {
2718 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2722 bit_rate += st->codecpar->bit_rate;
2723 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2724 // If we have a videostream with packets but without a bitrate
2725 // then consider the sum not known
2730 ic->bit_rate = bit_rate;
2733 /* if duration is already set, we believe it */
2734 if (ic->duration == AV_NOPTS_VALUE &&
2735 ic->bit_rate != 0) {
2736 filesize = ic->pb ? avio_size(ic->pb) : 0;
2737 if (filesize > ic->internal->data_offset) {
2738 filesize -= ic->internal->data_offset;
2739 for (i = 0; i < ic->nb_streams; i++) {
2740 st = ic->streams[i];
2741 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2742 && st->duration == AV_NOPTS_VALUE) {
2743 duration = av_rescale(8 * filesize, st->time_base.den,
2745 (int64_t) st->time_base.num);
2746 st->duration = duration;
2753 av_log(ic, AV_LOG_WARNING,
2754 "Estimating duration from bitrate, this may be inaccurate\n");
2757 #define DURATION_MAX_READ_SIZE 250000LL
2758 #define DURATION_MAX_RETRY 6
2760 /* only usable for MPEG-PS streams */
2761 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2763 AVPacket pkt1, *pkt = &pkt1;
2765 int num, den, read_size, i, ret;
2766 int found_duration = 0;
2768 int64_t filesize, offset, duration;
2771 /* flush packet queue */
2772 flush_packet_queue(ic);
2774 for (i = 0; i < ic->nb_streams; i++) {
2775 st = ic->streams[i];
2776 if (st->start_time == AV_NOPTS_VALUE &&
2777 st->first_dts == AV_NOPTS_VALUE &&
2778 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2779 av_log(ic, AV_LOG_WARNING,
2780 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2783 av_parser_close(st->parser);
2788 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2789 /* estimate the end time (duration) */
2790 /* XXX: may need to support wrapping */
2791 filesize = ic->pb ? avio_size(ic->pb) : 0;
2793 is_end = found_duration;
2794 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2798 avio_seek(ic->pb, offset, SEEK_SET);
2801 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2805 ret = ff_read_packet(ic, pkt);
2806 } while (ret == AVERROR(EAGAIN));
2809 read_size += pkt->size;
2810 st = ic->streams[pkt->stream_index];
2811 if (pkt->pts != AV_NOPTS_VALUE &&
2812 (st->start_time != AV_NOPTS_VALUE ||
2813 st->first_dts != AV_NOPTS_VALUE)) {
2814 if (pkt->duration == 0) {
2815 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2817 pkt->duration = av_rescale_rnd(1,
2818 num * (int64_t) st->time_base.den,
2819 den * (int64_t) st->time_base.num,
2823 duration = pkt->pts + pkt->duration;
2825 if (st->start_time != AV_NOPTS_VALUE)
2826 duration -= st->start_time;
2828 duration -= st->first_dts;
2830 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2831 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2832 st->duration = duration;
2833 st->info->last_duration = duration;
2836 av_packet_unref(pkt);
2839 /* check if all audio/video streams have valid duration */
2842 for (i = 0; i < ic->nb_streams; i++) {
2843 st = ic->streams[i];
2844 switch (st->codecpar->codec_type) {
2845 case AVMEDIA_TYPE_VIDEO:
2846 case AVMEDIA_TYPE_AUDIO:
2847 if (st->duration == AV_NOPTS_VALUE)
2854 ++retry <= DURATION_MAX_RETRY);
2856 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2858 /* warn about audio/video streams which duration could not be estimated */
2859 for (i = 0; i < ic->nb_streams; i++) {
2860 st = ic->streams[i];
2861 if (st->duration == AV_NOPTS_VALUE) {
2862 switch (st->codecpar->codec_type) {
2863 case AVMEDIA_TYPE_VIDEO:
2864 case AVMEDIA_TYPE_AUDIO:
2865 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2866 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2868 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2872 fill_all_stream_timings(ic);
2874 avio_seek(ic->pb, old_offset, SEEK_SET);
2875 for (i = 0; i < ic->nb_streams; i++) {
2878 st = ic->streams[i];
2879 st->cur_dts = st->first_dts;
2880 st->last_IP_pts = AV_NOPTS_VALUE;
2881 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2882 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2883 st->pts_buffer[j] = AV_NOPTS_VALUE;
2887 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2891 /* get the file size, if possible */
2892 if (ic->iformat->flags & AVFMT_NOFILE) {
2895 file_size = avio_size(ic->pb);
2896 file_size = FFMAX(0, file_size);
2899 if ((!strcmp(ic->iformat->name, "mpeg") ||
2900 !strcmp(ic->iformat->name, "mpegts")) &&
2901 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2902 /* get accurate estimate from the PTSes */
2903 estimate_timings_from_pts(ic, old_offset);
2904 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2905 } else if (has_duration(ic)) {
2906 /* at least one component has timings - we use them for all
2908 fill_all_stream_timings(ic);
2909 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2911 /* less precise: use bitrate info */
2912 estimate_timings_from_bit_rate(ic);
2913 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2915 update_stream_timings(ic);
2919 AVStream av_unused *st;
2920 for (i = 0; i < ic->nb_streams; i++) {
2921 st = ic->streams[i];
2922 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2923 (double) st->start_time * av_q2d(st->time_base),
2924 (double) st->duration * av_q2d(st->time_base));
2926 av_log(ic, AV_LOG_TRACE,
2927 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2928 (double) ic->start_time / AV_TIME_BASE,
2929 (double) ic->duration / AV_TIME_BASE,
2930 (int64_t)ic->bit_rate / 1000);
2934 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2936 AVCodecContext *avctx = st->internal->avctx;
2938 #define FAIL(errmsg) do { \
2940 *errmsg_ptr = errmsg; \
2944 if ( avctx->codec_id == AV_CODEC_ID_NONE
2945 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2946 FAIL("unknown codec");
2947 switch (avctx->codec_type) {
2948 case AVMEDIA_TYPE_AUDIO:
2949 if (!avctx->frame_size && determinable_frame_size(avctx))
2950 FAIL("unspecified frame size");
2951 if (st->info->found_decoder >= 0 &&
2952 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2953 FAIL("unspecified sample format");
2954 if (!avctx->sample_rate)
2955 FAIL("unspecified sample rate");
2956 if (!avctx->channels)
2957 FAIL("unspecified number of channels");
2958 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2959 FAIL("no decodable DTS frames");
2961 case AVMEDIA_TYPE_VIDEO:
2963 FAIL("unspecified size");
2964 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2965 FAIL("unspecified pixel format");
2966 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2967 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2968 FAIL("no frame in rv30/40 and no sar");
2970 case AVMEDIA_TYPE_SUBTITLE:
2971 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2972 FAIL("unspecified size");
2974 case AVMEDIA_TYPE_DATA:
2975 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2981 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2982 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2983 AVDictionary **options)
2985 AVCodecContext *avctx = st->internal->avctx;
2986 const AVCodec *codec;
2987 int got_picture = 1, ret = 0;
2988 AVFrame *frame = av_frame_alloc();
2989 AVSubtitle subtitle;
2990 AVPacket pkt = *avpkt;
2991 int do_skip_frame = 0;
2992 enum AVDiscard skip_frame;
2995 return AVERROR(ENOMEM);
2997 if (!avcodec_is_open(avctx) &&
2998 st->info->found_decoder <= 0 &&
2999 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3000 AVDictionary *thread_opt = NULL;
3002 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3005 st->info->found_decoder = -st->codecpar->codec_id;
3010 /* Force thread count to 1 since the H.264 decoder will not extract
3011 * SPS and PPS to extradata during multi-threaded decoding. */
3012 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3013 if (s->codec_whitelist)
3014 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3015 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3017 av_dict_free(&thread_opt);
3019 st->info->found_decoder = -avctx->codec_id;
3022 st->info->found_decoder = 1;
3023 } else if (!st->info->found_decoder)
3024 st->info->found_decoder = 1;
3026 if (st->info->found_decoder < 0) {
3031 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3033 skip_frame = avctx->skip_frame;
3034 avctx->skip_frame = AVDISCARD_ALL;
3037 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3039 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3040 (!st->codec_info_nb_frames &&
3041 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3043 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3044 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3045 ret = avcodec_send_packet(avctx, &pkt);
3046 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3050 ret = avcodec_receive_frame(avctx, frame);
3053 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3055 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3056 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3057 &got_picture, &pkt);
3063 st->nb_decoded_frames++;
3068 if (!pkt.data && !got_picture)
3072 if (do_skip_frame) {
3073 avctx->skip_frame = skip_frame;
3076 av_frame_free(&frame);
3080 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3082 while (tags->id != AV_CODEC_ID_NONE) {
3090 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3093 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3094 if (tag == tags[i].tag)
3096 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3097 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3099 return AV_CODEC_ID_NONE;
3102 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3104 if (bps <= 0 || bps > 64)
3105 return AV_CODEC_ID_NONE;
3110 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3112 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3114 return AV_CODEC_ID_NONE;
3119 if (sflags & (1 << (bps - 1))) {
3122 return AV_CODEC_ID_PCM_S8;
3124 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3126 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3128 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3130 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3132 return AV_CODEC_ID_NONE;
3137 return AV_CODEC_ID_PCM_U8;
3139 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3141 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3143 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3145 return AV_CODEC_ID_NONE;
3151 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3154 if (!av_codec_get_tag2(tags, id, &tag))
3159 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3163 for (i = 0; tags && tags[i]; i++) {
3164 const AVCodecTag *codec_tags = tags[i];
3165 while (codec_tags->id != AV_CODEC_ID_NONE) {
3166 if (codec_tags->id == id) {
3167 *tag = codec_tags->tag;
3176 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3179 for (i = 0; tags && tags[i]; i++) {
3180 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3181 if (id != AV_CODEC_ID_NONE)
3184 return AV_CODEC_ID_NONE;
3187 static void compute_chapters_end(AVFormatContext *s)
3190 int64_t max_time = 0;
3192 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3193 max_time = s->duration +
3194 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3196 for (i = 0; i < s->nb_chapters; i++)
3197 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3198 AVChapter *ch = s->chapters[i];
3199 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3203 for (j = 0; j < s->nb_chapters; j++) {
3204 AVChapter *ch1 = s->chapters[j];
3205 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3207 if (j != i && next_start > ch->start && next_start < end)
3210 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3214 static int get_std_framerate(int i)
3217 return (i + 1) * 1001;
3221 return (i + 31) * 1001 * 12;
3225 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3229 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3232 /* Is the time base unreliable?
3233 * This is a heuristic to balance between quick acceptance of the values in
3234 * the headers vs. some extra checks.
3235 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3236 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3237 * And there are "variable" fps files this needs to detect as well. */
3238 static int tb_unreliable(AVCodecContext *c)
3240 if (c->time_base.den >= 101LL * c->time_base.num ||
3241 c->time_base.den < 5LL * c->time_base.num ||
3242 // c->codec_tag == AV_RL32("DIVX") ||
3243 // c->codec_tag == AV_RL32("XVID") ||
3244 c->codec_tag == AV_RL32("mp4v") ||
3245 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3246 c->codec_id == AV_CODEC_ID_GIF ||
3247 c->codec_id == AV_CODEC_ID_HEVC ||
3248 c->codec_id == AV_CODEC_ID_H264)
3253 int ff_alloc_extradata(AVCodecParameters *par, int size)
3255 av_freep(&par->extradata);
3256 par->extradata_size = 0;
3258 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3259 return AVERROR(EINVAL);
3261 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3262 if (!par->extradata)
3263 return AVERROR(ENOMEM);
3265 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3266 par->extradata_size = size;
3271 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3273 int ret = ff_alloc_extradata(par, size);
3276 ret = avio_read(pb, par->extradata, size);
3278 av_freep(&par->extradata);
3279 par->extradata_size = 0;
3280 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3281 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3287 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3290 int64_t last = st->info->last_dts;
3292 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3293 && ts - (uint64_t)last < INT64_MAX) {
3294 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3295 int64_t duration = ts - last;
3297 if (!st->info->duration_error)
3298 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3299 if (!st->info->duration_error)
3300 return AVERROR(ENOMEM);
3302 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3303 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3304 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3305 if (st->info->duration_error[0][1][i] < 1e10) {
3306 int framerate = get_std_framerate(i);
3307 double sdts = dts*framerate/(1001*12);
3308 for (j= 0; j<2; j++) {
3309 int64_t ticks = llrint(sdts+j*0.5);
3310 double error= sdts - ticks + j*0.5;
3311 st->info->duration_error[j][0][i] += error;
3312 st->info->duration_error[j][1][i] += error*error;
3316 st->info->duration_count++;
3317 st->info->rfps_duration_sum += duration;
3319 if (st->info->duration_count % 10 == 0) {
3320 int n = st->info->duration_count;
3321 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3322 if (st->info->duration_error[0][1][i] < 1e10) {
3323 double a0 = st->info->duration_error[0][0][i] / n;
3324 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3325 double a1 = st->info->duration_error[1][0][i] / n;
3326 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3327 if (error0 > 0.04 && error1 > 0.04) {
3328 st->info->duration_error[0][1][i] = 2e10;
3329 st->info->duration_error[1][1][i] = 2e10;
3335 // ignore the first 4 values, they might have some random jitter
3336 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3337 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3339 if (ts != AV_NOPTS_VALUE)
3340 st->info->last_dts = ts;
3345 void ff_rfps_calculate(AVFormatContext *ic)
3349 for (i = 0; i < ic->nb_streams; i++) {
3350 AVStream *st = ic->streams[i];
3352 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3354 // the check for tb_unreliable() is not completely correct, since this is not about handling
3355 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3356 // ipmovie.c produces.
3357 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)
3358 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);
3359 if (st->info->duration_count>1 && !st->r_frame_rate.num
3360 && tb_unreliable(st->internal->avctx)) {
3362 double best_error= 0.01;
3363 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3365 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3368 if (st->info->codec_info_duration &&
3369 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3371 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3374 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3377 for (k= 0; k<2; k++) {
3378 int n = st->info->duration_count;
3379 double a= st->info->duration_error[k][0][j] / n;
3380 double error= st->info->duration_error[k][1][j]/n - a*a;
3382 if (error < best_error && best_error> 0.000000001) {
3384 num = get_std_framerate(j);
3387 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3390 // do not increase frame rate by more than 1 % in order to match a standard rate.
3391 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3392 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3394 if ( !st->avg_frame_rate.num
3395 && st->r_frame_rate.num && st->info->rfps_duration_sum
3396 && st->info->codec_info_duration <= 0
3397 && st->info->duration_count > 2
3398 && 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
3400 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3401 st->avg_frame_rate = st->r_frame_rate;
3404 av_freep(&st->info->duration_error);
3405 st->info->last_dts = AV_NOPTS_VALUE;
3406 st->info->duration_count = 0;
3407 st->info->rfps_duration_sum = 0;
3411 static int extract_extradata_check(AVStream *st)
3413 const AVBitStreamFilter *f;
3415 f = av_bsf_get_by_name("extract_extradata");
3420 const enum AVCodecID *ids;
3421 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3422 if (*ids == st->codecpar->codec_id)
3429 static int extract_extradata_init(AVStream *st)
3431 AVStreamInternal *i = st->internal;
3432 const AVBitStreamFilter *f;
3435 f = av_bsf_get_by_name("extract_extradata");
3439 /* check that the codec id is supported */
3440 ret = extract_extradata_check(st);
3444 i->extract_extradata.pkt = av_packet_alloc();
3445 if (!i->extract_extradata.pkt)
3446 return AVERROR(ENOMEM);
3448 ret = av_bsf_alloc(f, &i->extract_extradata.bsf);
3452 ret = avcodec_parameters_copy(i->extract_extradata.bsf->par_in,
3457 i->extract_extradata.bsf->time_base_in = st->time_base;
3459 /* if init fails here, we assume extracting extradata is just not
3460 * supported for this codec, so we return success */
3461 ret = av_bsf_init(i->extract_extradata.bsf);
3463 av_bsf_free(&i->extract_extradata.bsf);
3468 i->extract_extradata.inited = 1;
3472 av_bsf_free(&i->extract_extradata.bsf);
3473 av_packet_free(&i->extract_extradata.pkt);
3477 static int extract_extradata(AVStream *st, AVPacket *pkt)
3479 AVStreamInternal *i = st->internal;
3483 if (!i->extract_extradata.inited) {
3484 ret = extract_extradata_init(st);
3489 if (i->extract_extradata.inited && !i->extract_extradata.bsf)
3492 pkt_ref = i->extract_extradata.pkt;
3493 ret = av_packet_ref(pkt_ref, pkt);
3497 ret = av_bsf_send_packet(i->extract_extradata.bsf, pkt_ref);
3499 av_packet_unref(pkt_ref);
3503 while (ret >= 0 && !i->avctx->extradata) {
3507 ret = av_bsf_receive_packet(i->extract_extradata.bsf, pkt_ref);
3509 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3514 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3518 i->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3519 if (!i->avctx->extradata) {
3520 av_packet_unref(pkt_ref);
3521 return AVERROR(ENOMEM);
3523 memcpy(i->avctx->extradata, extradata, extradata_size);
3524 i->avctx->extradata_size = extradata_size;
3526 av_packet_unref(pkt_ref);
3532 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3534 int i, count = 0, ret = 0, j;
3537 AVCodecContext *avctx;
3538 AVPacket pkt1, *pkt;
3539 int64_t old_offset = avio_tell(ic->pb);
3540 // new streams might appear, no options for those
3541 int orig_nb_streams = ic->nb_streams;
3543 int64_t max_analyze_duration = ic->max_analyze_duration;
3544 int64_t max_stream_analyze_duration;
3545 int64_t max_subtitle_analyze_duration;
3546 int64_t probesize = ic->probesize;
3547 int eof_reached = 0;
3548 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3550 flush_codecs = probesize > 0;
3552 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3554 max_stream_analyze_duration = max_analyze_duration;
3555 max_subtitle_analyze_duration = max_analyze_duration;
3556 if (!max_analyze_duration) {
3557 max_stream_analyze_duration =
3558 max_analyze_duration = 5*AV_TIME_BASE;
3559 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3560 if (!strcmp(ic->iformat->name, "flv"))
3561 max_stream_analyze_duration = 90*AV_TIME_BASE;
3562 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3563 max_stream_analyze_duration = 7*AV_TIME_BASE;
3567 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3568 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3570 for (i = 0; i < ic->nb_streams; i++) {
3571 const AVCodec *codec;
3572 AVDictionary *thread_opt = NULL;
3573 st = ic->streams[i];
3574 avctx = st->internal->avctx;
3576 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3577 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3578 /* if (!st->time_base.num)
3580 if (!avctx->time_base.num)
3581 avctx->time_base = st->time_base;
3584 /* check if the caller has overridden the codec id */
3585 #if FF_API_LAVF_AVCTX
3586 FF_DISABLE_DEPRECATION_WARNINGS
3587 if (st->codec->codec_id != st->internal->orig_codec_id) {
3588 st->codecpar->codec_id = st->codec->codec_id;
3589 st->codecpar->codec_type = st->codec->codec_type;
3590 st->internal->orig_codec_id = st->codec->codec_id;
3592 FF_ENABLE_DEPRECATION_WARNINGS
3594 // only for the split stuff
3595 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3596 st->parser = av_parser_init(st->codecpar->codec_id);
3598 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3599 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3600 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3601 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3603 } else if (st->need_parsing) {
3604 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3605 "%s, packets or times may be invalid.\n",
3606 avcodec_get_name(st->codecpar->codec_id));
3610 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3611 st->internal->orig_codec_id = st->codecpar->codec_id;
3613 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3615 goto find_stream_info_err;
3616 if (st->request_probe <= 0)
3617 st->internal->avctx_inited = 1;
3619 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3621 /* Force thread count to 1 since the H.264 decoder will not extract
3622 * SPS and PPS to extradata during multi-threaded decoding. */
3623 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3625 if (ic->codec_whitelist)
3626 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3628 /* Ensure that subtitle_header is properly set. */
3629 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3630 && codec && !avctx->codec) {
3631 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3632 av_log(ic, AV_LOG_WARNING,
3633 "Failed to open codec in %s\n",__FUNCTION__);
3636 // Try to just open decoders, in case this is enough to get parameters.
3637 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3638 if (codec && !avctx->codec)
3639 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3640 av_log(ic, AV_LOG_WARNING,
3641 "Failed to open codec in %s\n",__FUNCTION__);
3644 av_dict_free(&thread_opt);
3647 for (i = 0; i < ic->nb_streams; i++) {
3648 #if FF_API_R_FRAME_RATE
3649 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3651 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3652 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3657 int analyzed_all_streams;
3658 if (ff_check_interrupt(&ic->interrupt_callback)) {
3660 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3664 /* check if one codec still needs to be handled */
3665 for (i = 0; i < ic->nb_streams; i++) {
3666 int fps_analyze_framecount = 20;
3669 st = ic->streams[i];
3670 if (!has_codec_parameters(st, NULL))
3672 /* If the timebase is coarse (like the usual millisecond precision
3673 * of mkv), we need to analyze more frames to reliably arrive at
3674 * the correct fps. */
3675 if (av_q2d(st->time_base) > 0.0005)
3676 fps_analyze_framecount *= 2;
3677 if (!tb_unreliable(st->internal->avctx))
3678 fps_analyze_framecount = 0;
3679 if (ic->fps_probe_size >= 0)
3680 fps_analyze_framecount = ic->fps_probe_size;
3681 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3682 fps_analyze_framecount = 0;
3683 /* variable fps and no guess at the real fps */
3684 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3685 st->info->codec_info_duration_fields/2 :
3686 st->info->duration_count;
3687 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3688 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3689 if (count < fps_analyze_framecount)
3692 // Look at the first 3 frames if there is evidence of frame delay
3693 // but the decoder delay is not set.
3694 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3696 if (!st->internal->avctx->extradata &&
3697 (!st->internal->extract_extradata.inited ||
3698 st->internal->extract_extradata.bsf) &&
3699 extract_extradata_check(st))
3701 if (st->first_dts == AV_NOPTS_VALUE &&
3702 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3703 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3704 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3705 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3708 analyzed_all_streams = 0;
3709 if (!missing_streams || !*missing_streams)
3710 if (i == ic->nb_streams) {
3711 analyzed_all_streams = 1;
3712 /* NOTE: If the format has no header, then we need to read some
3713 * packets to get most of the streams, so we cannot stop here. */
3714 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3715 /* If we found the info for all the codecs, we can stop. */
3717 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3722 /* We did not get all the codec info, but we read too much data. */
3723 if (read_size >= probesize) {
3725 av_log(ic, AV_LOG_DEBUG,
3726 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3727 for (i = 0; i < ic->nb_streams; i++)
3728 if (!ic->streams[i]->r_frame_rate.num &&
3729 ic->streams[i]->info->duration_count <= 1 &&
3730 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3731 strcmp(ic->iformat->name, "image2"))
3732 av_log(ic, AV_LOG_WARNING,
3733 "Stream #%d: not enough frames to estimate rate; "
3734 "consider increasing probesize\n", i);
3738 /* NOTE: A new stream can be added there if no header in file
3739 * (AVFMTCTX_NOHEADER). */
3740 ret = read_frame_internal(ic, &pkt1);
3741 if (ret == AVERROR(EAGAIN))
3752 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3753 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3754 &ic->internal->packet_buffer_end,
3757 goto find_stream_info_err;
3760 st = ic->streams[pkt->stream_index];
3761 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3762 read_size += pkt->size;
3764 avctx = st->internal->avctx;
3765 if (!st->internal->avctx_inited) {
3766 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3768 goto find_stream_info_err;
3769 st->internal->avctx_inited = 1;
3772 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3773 /* check for non-increasing dts */
3774 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3775 st->info->fps_last_dts >= pkt->dts) {
3776 av_log(ic, AV_LOG_DEBUG,
3777 "Non-increasing DTS in stream %d: packet %d with DTS "
3778 "%"PRId64", packet %d with DTS %"PRId64"\n",
3779 st->index, st->info->fps_last_dts_idx,
3780 st->info->fps_last_dts, st->codec_info_nb_frames,
3782 st->info->fps_first_dts =
3783 st->info->fps_last_dts = AV_NOPTS_VALUE;
3785 /* Check for a discontinuity in dts. If the difference in dts
3786 * is more than 1000 times the average packet duration in the
3787 * sequence, we treat it as a discontinuity. */
3788 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3789 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3790 (pkt->dts - st->info->fps_last_dts) / 1000 >
3791 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3792 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3793 av_log(ic, AV_LOG_WARNING,
3794 "DTS discontinuity in stream %d: packet %d with DTS "
3795 "%"PRId64", packet %d with DTS %"PRId64"\n",
3796 st->index, st->info->fps_last_dts_idx,
3797 st->info->fps_last_dts, st->codec_info_nb_frames,
3799 st->info->fps_first_dts =
3800 st->info->fps_last_dts = AV_NOPTS_VALUE;
3803 /* update stored dts values */
3804 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3805 st->info->fps_first_dts = pkt->dts;
3806 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3808 st->info->fps_last_dts = pkt->dts;
3809 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3811 if (st->codec_info_nb_frames>1) {
3815 if (st->time_base.den > 0)
3816 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3817 if (st->avg_frame_rate.num > 0)
3818 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3821 && st->codec_info_nb_frames>30
3822 && st->info->fps_first_dts != AV_NOPTS_VALUE
3823 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3824 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3826 if (analyzed_all_streams) limit = max_analyze_duration;
3827 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3828 else limit = max_stream_analyze_duration;
3831 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3833 t, pkt->stream_index);
3834 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3835 av_packet_unref(pkt);
3838 if (pkt->duration) {
3839 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3840 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3842 st->info->codec_info_duration += pkt->duration;
3843 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3846 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3847 #if FF_API_R_FRAME_RATE
3848 ff_rfps_add_frame(ic, st, pkt->dts);
3850 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3851 st->info->frame_delay_evidence = 1;
3853 if (!st->internal->avctx->extradata) {
3854 ret = extract_extradata(st, pkt);
3856 goto find_stream_info_err;
3859 /* If still no information, we try to open the codec and to
3860 * decompress the frame. We try to avoid that in most cases as
3861 * it takes longer and uses more memory. For MPEG-4, we need to
3862 * decompress for QuickTime.
3864 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3865 * least one frame of codec data, this makes sure the codec initializes
3866 * the channel configuration and does not only trust the values from
3868 try_decode_frame(ic, st, pkt,
3869 (options && i < orig_nb_streams) ? &options[i] : NULL);
3871 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3872 av_packet_unref(pkt);
3874 st->codec_info_nb_frames++;
3880 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3881 st = ic->streams[stream_index];
3882 avctx = st->internal->avctx;
3883 if (!has_codec_parameters(st, NULL)) {
3884 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3885 if (codec && !avctx->codec) {
3886 AVDictionary *opts = NULL;
3887 if (ic->codec_whitelist)
3888 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3889 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3890 av_log(ic, AV_LOG_WARNING,
3891 "Failed to open codec in %s\n",__FUNCTION__);
3892 av_dict_free(&opts);
3896 // EOF already reached while reading the stream above.
3897 // So continue with reoordering DTS with whatever delay we have.
3898 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3899 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3905 AVPacket empty_pkt = { 0 };
3907 av_init_packet(&empty_pkt);
3909 for (i = 0; i < ic->nb_streams; i++) {
3911 st = ic->streams[i];
3913 /* flush the decoders */
3914 if (st->info->found_decoder == 1) {
3916 err = try_decode_frame(ic, st, &empty_pkt,
3917 (options && i < orig_nb_streams)
3918 ? &options[i] : NULL);
3919 } while (err > 0 && !has_codec_parameters(st, NULL));
3922 av_log(ic, AV_LOG_INFO,
3923 "decoding for stream %d failed\n", st->index);
3929 ff_rfps_calculate(ic);
3931 for (i = 0; i < ic->nb_streams; i++) {
3932 st = ic->streams[i];
3933 avctx = st->internal->avctx;
3934 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3935 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3936 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3937 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3938 avctx->codec_tag= tag;
3941 /* estimate average framerate if not set by demuxer */
3942 if (st->info->codec_info_duration_fields &&
3943 !st->avg_frame_rate.num &&
3944 st->info->codec_info_duration) {
3946 double best_error = 0.01;
3947 AVRational codec_frame_rate = avctx->framerate;
3949 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3950 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3951 st->info->codec_info_duration < 0)
3953 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3954 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3955 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3957 /* Round guessed framerate to a "standard" framerate if it's
3958 * within 1% of the original estimate. */
3959 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3960 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3961 double error = fabs(av_q2d(st->avg_frame_rate) /
3962 av_q2d(std_fps) - 1);
3964 if (error < best_error) {
3966 best_fps = std_fps.num;
3969 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
3970 error = fabs(av_q2d(codec_frame_rate) /
3971 av_q2d(std_fps) - 1);
3972 if (error < best_error) {
3974 best_fps = std_fps.num;
3979 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3980 best_fps, 12 * 1001, INT_MAX);
3983 if (!st->r_frame_rate.num) {
3984 if ( avctx->time_base.den * (int64_t) st->time_base.num
3985 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
3986 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
3987 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
3989 st->r_frame_rate.num = st->time_base.den;
3990 st->r_frame_rate.den = st->time_base.num;
3993 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3994 AVRational hw_ratio = { avctx->height, avctx->width };
3995 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3998 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3999 if (!avctx->bits_per_coded_sample)
4000 avctx->bits_per_coded_sample =
4001 av_get_bits_per_sample(avctx->codec_id);
4002 // set stream disposition based on audio service type
4003 switch (avctx->audio_service_type) {
4004 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4005 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4007 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4008 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4010 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4011 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4013 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4014 st->disposition = AV_DISPOSITION_COMMENT;
4016 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4017 st->disposition = AV_DISPOSITION_KARAOKE;
4024 estimate_timings(ic, old_offset);
4026 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4028 if (ret >= 0 && ic->nb_streams)
4029 /* We could not have all the codec parameters before EOF. */
4031 for (i = 0; i < ic->nb_streams; i++) {
4033 st = ic->streams[i];
4035 /* if no packet was ever seen, update context now for has_codec_parameters */
4036 if (!st->internal->avctx_inited) {
4037 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4038 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4039 st->codecpar->format = st->internal->avctx->sample_fmt;
4040 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4042 goto find_stream_info_err;
4044 if (!has_codec_parameters(st, &errmsg)) {
4046 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4047 av_log(ic, AV_LOG_WARNING,
4048 "Could not find codec parameters for stream %d (%s): %s\n"
4049 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4056 compute_chapters_end(ic);
4058 /* update the stream parameters from the internal codec contexts */
4059 for (i = 0; i < ic->nb_streams; i++) {
4060 st = ic->streams[i];
4062 if (st->internal->avctx_inited) {
4063 int orig_w = st->codecpar->width;
4064 int orig_h = st->codecpar->height;
4065 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4067 goto find_stream_info_err;
4069 // The decoder might reduce the video size by the lowres factor.
4070 if (st->internal->avctx->lowres && orig_w) {
4071 st->codecpar->width = orig_w;
4072 st->codecpar->height = orig_h;
4077 #if FF_API_LAVF_AVCTX
4078 FF_DISABLE_DEPRECATION_WARNINGS
4079 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4081 goto find_stream_info_err;
4084 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4085 // by the lowres factor.
4086 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4087 st->codec->lowres = st->internal->avctx->lowres;
4088 st->codec->width = st->internal->avctx->width;
4089 st->codec->height = st->internal->avctx->height;
4093 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4094 st->codec->time_base = st->internal->avctx->time_base;
4095 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4097 st->codec->framerate = st->avg_frame_rate;
4099 if (st->internal->avctx->subtitle_header) {
4100 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4101 if (!st->codec->subtitle_header)
4102 goto find_stream_info_err;
4103 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4104 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4105 st->codec->subtitle_header_size);
4108 // Fields unavailable in AVCodecParameters
4109 st->codec->coded_width = st->internal->avctx->coded_width;
4110 st->codec->coded_height = st->internal->avctx->coded_height;
4111 st->codec->properties = st->internal->avctx->properties;
4112 FF_ENABLE_DEPRECATION_WARNINGS
4115 st->internal->avctx_inited = 0;
4118 find_stream_info_err:
4119 for (i = 0; i < ic->nb_streams; i++) {
4120 st = ic->streams[i];
4122 av_freep(&st->info->duration_error);
4123 avcodec_close(ic->streams[i]->internal->avctx);
4124 av_freep(&ic->streams[i]->info);
4125 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4126 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4129 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4130 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4134 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4138 for (i = 0; i < ic->nb_programs; i++) {
4139 if (ic->programs[i] == last) {
4143 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4144 if (ic->programs[i]->stream_index[j] == s)
4145 return ic->programs[i];
4151 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4152 int wanted_stream_nb, int related_stream,
4153 AVCodec **decoder_ret, int flags)
4155 int i, nb_streams = ic->nb_streams;
4156 int ret = AVERROR_STREAM_NOT_FOUND;
4157 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4158 int count, multiframe, disposition;
4159 int64_t best_bitrate = -1;
4161 unsigned *program = NULL;
4162 const AVCodec *decoder = NULL, *best_decoder = NULL;
4164 if (related_stream >= 0 && wanted_stream_nb < 0) {
4165 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4167 program = p->stream_index;
4168 nb_streams = p->nb_stream_indexes;
4171 for (i = 0; i < nb_streams; i++) {
4172 int real_stream_index = program ? program[i] : i;
4173 AVStream *st = ic->streams[real_stream_index];
4174 AVCodecParameters *par = st->codecpar;
4175 if (par->codec_type != type)
4177 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4179 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4182 decoder = find_decoder(ic, st, par->codec_id);
4185 ret = AVERROR_DECODER_NOT_FOUND;
4189 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED));
4190 count = st->codec_info_nb_frames;
4191 bitrate = par->bit_rate;
4192 multiframe = FFMIN(5, count);
4193 if ((best_disposition > disposition) ||
4194 (best_disposition == disposition && best_multiframe > multiframe) ||
4195 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4196 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4198 best_disposition = disposition;
4200 best_bitrate = bitrate;
4201 best_multiframe = multiframe;
4202 ret = real_stream_index;
4203 best_decoder = decoder;
4204 if (program && i == nb_streams - 1 && ret < 0) {
4206 nb_streams = ic->nb_streams;
4207 /* no related stream found, try again with everything */
4212 *decoder_ret = (AVCodec*)best_decoder;
4216 /*******************************************************/
4218 int av_read_play(AVFormatContext *s)
4220 if (s->iformat->read_play)
4221 return s->iformat->read_play(s);
4223 return avio_pause(s->pb, 0);
4224 return AVERROR(ENOSYS);
4227 int av_read_pause(AVFormatContext *s)
4229 if (s->iformat->read_pause)
4230 return s->iformat->read_pause(s);
4232 return avio_pause(s->pb, 1);
4233 return AVERROR(ENOSYS);
4236 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4241 dst->time_base = src->time_base;
4242 dst->nb_frames = src->nb_frames;
4243 dst->disposition = src->disposition;
4244 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4245 dst->avg_frame_rate = src->avg_frame_rate;
4246 dst->r_frame_rate = src->r_frame_rate;
4248 av_dict_free(&dst->metadata);
4249 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4253 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4257 /* Free existing side data*/
4258 for (i = 0; i < dst->nb_side_data; i++)
4259 av_free(dst->side_data[i].data);
4260 av_freep(&dst->side_data);
4261 dst->nb_side_data = 0;
4263 /* Copy side data if present */
4264 if (src->nb_side_data) {
4265 dst->side_data = av_mallocz_array(src->nb_side_data,
4266 sizeof(AVPacketSideData));
4267 if (!dst->side_data)
4268 return AVERROR(ENOMEM);
4269 dst->nb_side_data = src->nb_side_data;
4271 for (i = 0; i < src->nb_side_data; i++) {
4272 uint8_t *data = av_memdup(src->side_data[i].data,
4273 src->side_data[i].size);
4275 return AVERROR(ENOMEM);
4276 dst->side_data[i].type = src->side_data[i].type;
4277 dst->side_data[i].size = src->side_data[i].size;
4278 dst->side_data[i].data = data;
4282 #if FF_API_LAVF_FFSERVER
4283 FF_DISABLE_DEPRECATION_WARNINGS
4284 av_freep(&dst->recommended_encoder_configuration);
4285 if (src->recommended_encoder_configuration) {
4286 const char *conf_str = src->recommended_encoder_configuration;
4287 dst->recommended_encoder_configuration = av_strdup(conf_str);
4288 if (!dst->recommended_encoder_configuration)
4289 return AVERROR(ENOMEM);
4291 FF_ENABLE_DEPRECATION_WARNINGS
4297 static void free_stream(AVStream **pst)
4299 AVStream *st = *pst;
4305 for (i = 0; i < st->nb_side_data; i++)
4306 av_freep(&st->side_data[i].data);
4307 av_freep(&st->side_data);
4310 av_parser_close(st->parser);
4312 if (st->attached_pic.data)
4313 av_packet_unref(&st->attached_pic);
4316 avcodec_free_context(&st->internal->avctx);
4317 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4318 av_bsf_free(&st->internal->bsfcs[i]);
4319 av_freep(&st->internal->bsfcs);
4321 av_freep(&st->internal->priv_pts);
4322 av_bsf_free(&st->internal->extract_extradata.bsf);
4323 av_packet_free(&st->internal->extract_extradata.pkt);
4325 av_freep(&st->internal);
4327 av_dict_free(&st->metadata);
4328 avcodec_parameters_free(&st->codecpar);
4329 av_freep(&st->probe_data.buf);
4330 av_freep(&st->index_entries);
4331 #if FF_API_LAVF_AVCTX
4332 FF_DISABLE_DEPRECATION_WARNINGS
4333 avcodec_free_context(&st->codec);
4334 FF_ENABLE_DEPRECATION_WARNINGS
4336 av_freep(&st->priv_data);
4338 av_freep(&st->info->duration_error);
4339 av_freep(&st->info);
4340 #if FF_API_LAVF_FFSERVER
4341 FF_DISABLE_DEPRECATION_WARNINGS
4342 av_freep(&st->recommended_encoder_configuration);
4343 FF_ENABLE_DEPRECATION_WARNINGS
4349 void ff_free_stream(AVFormatContext *s, AVStream *st)
4351 av_assert0(s->nb_streams>0);
4352 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4354 free_stream(&s->streams[ --s->nb_streams ]);
4357 void avformat_free_context(AVFormatContext *s)
4365 if (s->iformat && s->iformat->priv_class && s->priv_data)
4366 av_opt_free(s->priv_data);
4367 if (s->oformat && s->oformat->priv_class && s->priv_data)
4368 av_opt_free(s->priv_data);
4370 for (i = s->nb_streams - 1; i >= 0; i--)
4371 ff_free_stream(s, s->streams[i]);
4374 for (i = s->nb_programs - 1; i >= 0; i--) {
4375 av_dict_free(&s->programs[i]->metadata);
4376 av_freep(&s->programs[i]->stream_index);
4377 av_freep(&s->programs[i]);
4379 av_freep(&s->programs);
4380 av_freep(&s->priv_data);
4381 while (s->nb_chapters--) {
4382 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4383 av_freep(&s->chapters[s->nb_chapters]);
4385 av_freep(&s->chapters);
4386 av_dict_free(&s->metadata);
4387 av_dict_free(&s->internal->id3v2_meta);
4388 av_freep(&s->streams);
4389 flush_packet_queue(s);
4390 av_freep(&s->internal);
4395 void avformat_close_input(AVFormatContext **ps)
4406 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4407 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4410 flush_packet_queue(s);
4413 if (s->iformat->read_close)
4414 s->iformat->read_close(s);
4416 avformat_free_context(s);
4423 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4429 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4430 if (s->max_streams < INT_MAX/sizeof(*streams))
4431 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);
4434 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4437 s->streams = streams;
4439 st = av_mallocz(sizeof(AVStream));
4442 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4446 st->info->last_dts = AV_NOPTS_VALUE;
4448 #if FF_API_LAVF_AVCTX
4449 FF_DISABLE_DEPRECATION_WARNINGS
4450 st->codec = avcodec_alloc_context3(c);
4456 FF_ENABLE_DEPRECATION_WARNINGS
4459 st->internal = av_mallocz(sizeof(*st->internal));
4463 st->codecpar = avcodec_parameters_alloc();
4467 st->internal->avctx = avcodec_alloc_context3(NULL);
4468 if (!st->internal->avctx)
4472 #if FF_API_LAVF_AVCTX
4473 FF_DISABLE_DEPRECATION_WARNINGS
4474 /* no default bitrate if decoding */
4475 st->codec->bit_rate = 0;
4476 FF_ENABLE_DEPRECATION_WARNINGS
4479 /* default pts setting is MPEG-like */
4480 avpriv_set_pts_info(st, 33, 1, 90000);
4481 /* we set the current DTS to 0 so that formats without any timestamps
4482 * but durations get some timestamps, formats with some unknown
4483 * timestamps have their first few packets buffered and the
4484 * timestamps corrected before they are returned to the user */
4485 st->cur_dts = RELATIVE_TS_BASE;
4487 st->cur_dts = AV_NOPTS_VALUE;
4490 st->index = s->nb_streams;
4491 st->start_time = AV_NOPTS_VALUE;
4492 st->duration = AV_NOPTS_VALUE;
4493 st->first_dts = AV_NOPTS_VALUE;
4494 st->probe_packets = MAX_PROBE_PACKETS;
4495 st->pts_wrap_reference = AV_NOPTS_VALUE;
4496 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4498 st->last_IP_pts = AV_NOPTS_VALUE;
4499 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4500 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4501 st->pts_buffer[i] = AV_NOPTS_VALUE;
4503 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4505 #if FF_API_R_FRAME_RATE
4506 st->info->last_dts = AV_NOPTS_VALUE;
4508 st->info->fps_first_dts = AV_NOPTS_VALUE;
4509 st->info->fps_last_dts = AV_NOPTS_VALUE;
4511 st->inject_global_side_data = s->internal->inject_global_side_data;
4513 st->internal->need_context_update = 1;
4515 s->streams[s->nb_streams++] = st;
4522 AVProgram *av_new_program(AVFormatContext *ac, int id)
4524 AVProgram *program = NULL;
4527 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4529 for (i = 0; i < ac->nb_programs; i++)
4530 if (ac->programs[i]->id == id)
4531 program = ac->programs[i];
4534 program = av_mallocz(sizeof(AVProgram));
4537 dynarray_add(&ac->programs, &ac->nb_programs, program);
4538 program->discard = AVDISCARD_NONE;
4541 program->pts_wrap_reference = AV_NOPTS_VALUE;
4542 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4544 program->start_time =
4545 program->end_time = AV_NOPTS_VALUE;
4550 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4551 int64_t start, int64_t end, const char *title)
4553 AVChapter *chapter = NULL;
4556 if (end != AV_NOPTS_VALUE && start > end) {
4557 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4561 for (i = 0; i < s->nb_chapters; i++)
4562 if (s->chapters[i]->id == id)
4563 chapter = s->chapters[i];
4566 chapter = av_mallocz(sizeof(AVChapter));
4569 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4571 av_dict_set(&chapter->metadata, "title", title, 0);
4573 chapter->time_base = time_base;
4574 chapter->start = start;
4580 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4583 AVProgram *program = NULL;
4586 if (idx >= ac->nb_streams) {
4587 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4591 for (i = 0; i < ac->nb_programs; i++) {
4592 if (ac->programs[i]->id != progid)
4594 program = ac->programs[i];
4595 for (j = 0; j < program->nb_stream_indexes; j++)
4596 if (program->stream_index[j] == idx)
4599 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4602 program->stream_index = tmp;
4603 program->stream_index[program->nb_stream_indexes++] = idx;
4608 uint64_t ff_ntp_time(void)
4610 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4613 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4616 char *q, buf1[20], c;
4617 int nd, len, percentd_found;
4629 while (av_isdigit(*p))
4630 nd = nd * 10 + *p++ - '0';
4632 } while (av_isdigit(c));
4638 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4643 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4645 if ((q - buf + len) > buf_size - 1)
4647 memcpy(q, buf1, len);
4655 if ((q - buf) < buf_size - 1)
4659 if (!percentd_found)
4668 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4670 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4673 void av_url_split(char *proto, int proto_size,
4674 char *authorization, int authorization_size,
4675 char *hostname, int hostname_size,
4676 int *port_ptr, char *path, int path_size, const char *url)
4678 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4684 if (authorization_size > 0)
4685 authorization[0] = 0;
4686 if (hostname_size > 0)
4691 /* parse protocol */
4692 if ((p = strchr(url, ':'))) {
4693 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4700 /* no protocol means plain filename */
4701 av_strlcpy(path, url, path_size);
4705 /* separate path from hostname */
4706 ls = strchr(p, '/');
4707 ls2 = strchr(p, '?');
4711 ls = FFMIN(ls, ls2);
4713 av_strlcpy(path, ls, path_size);
4715 ls = &p[strlen(p)]; // XXX
4717 /* the rest is hostname, use that to parse auth/port */
4719 /* authorization (user[:pass]@hostname) */
4721 while ((at = strchr(p, '@')) && at < ls) {
4722 av_strlcpy(authorization, at2,
4723 FFMIN(authorization_size, at + 1 - at2));
4724 p = at + 1; /* skip '@' */
4727 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4729 av_strlcpy(hostname, p + 1,
4730 FFMIN(hostname_size, brk - p));
4731 if (brk[1] == ':' && port_ptr)
4732 *port_ptr = atoi(brk + 2);
4733 } else if ((col = strchr(p, ':')) && col < ls) {
4734 av_strlcpy(hostname, p,
4735 FFMIN(col + 1 - p, hostname_size));
4737 *port_ptr = atoi(col + 1);
4739 av_strlcpy(hostname, p,
4740 FFMIN(ls + 1 - p, hostname_size));
4744 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4747 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4750 'C', 'D', 'E', 'F' };
4751 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4754 'c', 'd', 'e', 'f' };
4755 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4757 for (i = 0; i < s; i++) {
4758 buff[i * 2] = hex_table[src[i] >> 4];
4759 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4765 int ff_hex_to_data(uint8_t *data, const char *p)
4772 p += strspn(p, SPACE_CHARS);
4775 c = av_toupper((unsigned char) *p++);
4776 if (c >= '0' && c <= '9')
4778 else if (c >= 'A' && c <= 'F')
4793 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4794 unsigned int pts_num, unsigned int pts_den)
4797 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4798 if (new_tb.num != pts_num)
4799 av_log(NULL, AV_LOG_DEBUG,
4800 "st:%d removing common factor %d from timebase\n",
4801 s->index, pts_num / new_tb.num);
4803 av_log(NULL, AV_LOG_WARNING,
4804 "st:%d has too large timebase, reducing\n", s->index);
4806 if (new_tb.num <= 0 || new_tb.den <= 0) {
4807 av_log(NULL, AV_LOG_ERROR,
4808 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4809 new_tb.num, new_tb.den,
4813 s->time_base = new_tb;
4814 #if FF_API_LAVF_AVCTX
4815 FF_DISABLE_DEPRECATION_WARNINGS
4816 s->codec->pkt_timebase = new_tb;
4817 FF_ENABLE_DEPRECATION_WARNINGS
4819 s->internal->avctx->pkt_timebase = new_tb;
4820 s->pts_wrap_bits = pts_wrap_bits;
4823 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4826 const char *ptr = str;
4828 /* Parse key=value pairs. */
4831 char *dest = NULL, *dest_end;
4832 int key_len, dest_len = 0;
4834 /* Skip whitespace and potential commas. */
4835 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4842 if (!(ptr = strchr(key, '=')))
4845 key_len = ptr - key;
4847 callback_get_buf(context, key, key_len, &dest, &dest_len);
4848 dest_end = dest + dest_len - 1;
4852 while (*ptr && *ptr != '\"') {
4856 if (dest && dest < dest_end)
4860 if (dest && dest < dest_end)
4868 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4869 if (dest && dest < dest_end)
4877 int ff_find_stream_index(AVFormatContext *s, int id)
4880 for (i = 0; i < s->nb_streams; i++)
4881 if (s->streams[i]->id == id)
4886 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4890 unsigned int codec_tag;
4891 if (ofmt->query_codec)
4892 return ofmt->query_codec(codec_id, std_compliance);
4893 else if (ofmt->codec_tag)
4894 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4895 else if (codec_id == ofmt->video_codec ||
4896 codec_id == ofmt->audio_codec ||
4897 codec_id == ofmt->subtitle_codec ||
4898 codec_id == ofmt->data_codec)
4901 return AVERROR_PATCHWELCOME;
4904 int avformat_network_init(void)
4908 if ((ret = ff_network_init()) < 0)
4910 if ((ret = ff_tls_init()) < 0)
4916 int avformat_network_deinit(void)
4925 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4926 uint64_t channel_layout, int32_t sample_rate,
4927 int32_t width, int32_t height)
4933 return AVERROR(EINVAL);
4936 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4938 if (channel_layout) {
4940 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4944 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4946 if (width || height) {
4948 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4950 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4952 return AVERROR(ENOMEM);
4953 bytestream_put_le32(&data, flags);
4955 bytestream_put_le32(&data, channels);
4957 bytestream_put_le64(&data, channel_layout);
4959 bytestream_put_le32(&data, sample_rate);
4960 if (width || height) {
4961 bytestream_put_le32(&data, width);
4962 bytestream_put_le32(&data, height);
4967 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4969 AVRational undef = {0, 1};
4970 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4971 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4972 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4974 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4975 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4976 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4977 stream_sample_aspect_ratio = undef;
4979 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4980 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4981 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4982 frame_sample_aspect_ratio = undef;
4984 if (stream_sample_aspect_ratio.num)
4985 return stream_sample_aspect_ratio;
4987 return frame_sample_aspect_ratio;
4990 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4992 AVRational fr = st->r_frame_rate;
4993 AVRational codec_fr = st->internal->avctx->framerate;
4994 AVRational avg_fr = st->avg_frame_rate;
4996 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4997 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5002 if (st->internal->avctx->ticks_per_frame > 1) {
5003 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5004 (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))
5011 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5014 if (*spec <= '9' && *spec >= '0') /* opt:index */
5015 return strtol(spec, NULL, 0) == st->index;
5016 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5017 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5018 enum AVMediaType type;
5022 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5023 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5024 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5025 case 'd': type = AVMEDIA_TYPE_DATA; break;
5026 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5027 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5028 default: av_assert0(0);
5030 #if FF_API_LAVF_AVCTX
5031 FF_DISABLE_DEPRECATION_WARNINGS
5032 if (type != st->codecpar->codec_type
5033 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5035 FF_ENABLE_DEPRECATION_WARNINGS
5037 if (type != st->codecpar->codec_type)
5040 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5042 if (*spec++ == ':') { /* possibly followed by :index */
5043 int i, index = strtol(spec, NULL, 0);
5044 for (i = 0; i < s->nb_streams; i++) {
5045 #if FF_API_LAVF_AVCTX
5046 FF_DISABLE_DEPRECATION_WARNINGS
5047 if ((s->streams[i]->codecpar->codec_type == type
5048 || s->streams[i]->codec->codec_type == type
5050 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5052 return i == st->index;
5053 FF_ENABLE_DEPRECATION_WARNINGS
5055 if ((s->streams[i]->codecpar->codec_type == type) &&
5056 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5058 return i == st->index;
5064 } else if (*spec == 'p' && *(spec + 1) == ':') {
5068 prog_id = strtol(spec, &endptr, 0);
5069 for (i = 0; i < s->nb_programs; i++) {
5070 if (s->programs[i]->id != prog_id)
5073 if (*endptr++ == ':') {
5074 int stream_idx = strtol(endptr, NULL, 0);
5075 return stream_idx >= 0 &&
5076 stream_idx < s->programs[i]->nb_stream_indexes &&
5077 st->index == s->programs[i]->stream_index[stream_idx];
5080 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5081 if (st->index == s->programs[i]->stream_index[j])
5085 } else if (*spec == '#' ||
5086 (*spec == 'i' && *(spec + 1) == ':')) {
5089 spec += 1 + (*spec == 'i');
5090 stream_id = strtol(spec, &endptr, 0);
5092 return stream_id == st->id;
5093 } else if (*spec == 'm' && *(spec + 1) == ':') {
5094 AVDictionaryEntry *tag;
5099 val = strchr(spec, ':');
5101 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5103 return AVERROR(ENOMEM);
5105 tag = av_dict_get(st->metadata, key, NULL, 0);
5107 if (!val || !strcmp(tag->value, val + 1))
5116 } else if (*spec == 'u') {
5117 AVCodecParameters *par = st->codecpar;
5118 #if FF_API_LAVF_AVCTX
5119 FF_DISABLE_DEPRECATION_WARNINGS
5120 AVCodecContext *codec = st->codec;
5121 FF_ENABLE_DEPRECATION_WARNINGS
5124 switch (par->codec_type) {
5125 case AVMEDIA_TYPE_AUDIO:
5126 val = par->sample_rate && par->channels;
5127 #if FF_API_LAVF_AVCTX
5128 val = val || (codec->sample_rate && codec->channels);
5130 if (par->format == AV_SAMPLE_FMT_NONE
5131 #if FF_API_LAVF_AVCTX
5132 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5137 case AVMEDIA_TYPE_VIDEO:
5138 val = par->width && par->height;
5139 #if FF_API_LAVF_AVCTX
5140 val = val || (codec->width && codec->height);
5142 if (par->format == AV_PIX_FMT_NONE
5143 #if FF_API_LAVF_AVCTX
5144 && codec->pix_fmt == AV_PIX_FMT_NONE
5149 case AVMEDIA_TYPE_UNKNOWN:
5156 #if FF_API_LAVF_AVCTX
5157 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
5159 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
5161 } else if (!*spec) /* empty specifier, matches everything */
5164 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5165 return AVERROR(EINVAL);
5168 int ff_generate_avci_extradata(AVStream *st)
5170 static const uint8_t avci100_1080p_extradata[] = {
5172 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5173 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5174 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5175 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5176 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5177 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5178 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5179 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5180 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5182 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5185 static const uint8_t avci100_1080i_extradata[] = {
5187 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5188 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5189 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5190 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5191 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5192 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5193 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5194 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5195 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5196 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5197 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5199 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5202 static const uint8_t avci50_1080p_extradata[] = {
5204 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5205 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5206 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5207 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5208 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5209 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5210 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5211 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5212 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5214 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5217 static const uint8_t avci50_1080i_extradata[] = {
5219 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5220 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5221 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5222 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5223 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5224 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5225 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5226 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5227 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5228 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5229 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5231 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5234 static const uint8_t avci100_720p_extradata[] = {
5236 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5237 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5238 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5239 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5240 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5241 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5242 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5243 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5244 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5245 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5247 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5250 static const uint8_t avci50_720p_extradata[] = {
5252 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5253 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5254 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5255 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5256 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5257 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5258 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5259 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5260 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5262 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5266 const uint8_t *data = NULL;
5269 if (st->codecpar->width == 1920) {
5270 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5271 data = avci100_1080p_extradata;
5272 size = sizeof(avci100_1080p_extradata);
5274 data = avci100_1080i_extradata;
5275 size = sizeof(avci100_1080i_extradata);
5277 } else if (st->codecpar->width == 1440) {
5278 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5279 data = avci50_1080p_extradata;
5280 size = sizeof(avci50_1080p_extradata);
5282 data = avci50_1080i_extradata;
5283 size = sizeof(avci50_1080i_extradata);
5285 } else if (st->codecpar->width == 1280) {
5286 data = avci100_720p_extradata;
5287 size = sizeof(avci100_720p_extradata);
5288 } else if (st->codecpar->width == 960) {
5289 data = avci50_720p_extradata;
5290 size = sizeof(avci50_720p_extradata);
5296 av_freep(&st->codecpar->extradata);
5297 if (ff_alloc_extradata(st->codecpar, size))
5298 return AVERROR(ENOMEM);
5299 memcpy(st->codecpar->extradata, data, size);
5304 uint8_t *av_stream_get_side_data(const AVStream *st,
5305 enum AVPacketSideDataType type, int *size)
5309 for (i = 0; i < st->nb_side_data; i++) {
5310 if (st->side_data[i].type == type) {
5312 *size = st->side_data[i].size;
5313 return st->side_data[i].data;
5319 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5320 uint8_t *data, size_t size)
5322 AVPacketSideData *sd, *tmp;
5325 for (i = 0; i < st->nb_side_data; i++) {
5326 sd = &st->side_data[i];
5328 if (sd->type == type) {
5329 av_freep(&sd->data);
5336 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5337 return AVERROR(ERANGE);
5339 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5341 return AVERROR(ENOMEM);
5344 st->side_data = tmp;
5347 sd = &st->side_data[st->nb_side_data - 1];
5355 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5359 uint8_t *data = av_malloc(size);
5364 ret = av_stream_add_side_data(st, type, data, size);
5373 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5376 const AVBitStreamFilter *bsf;
5378 AVCodecParameters *in_par;
5380 if (!(bsf = av_bsf_get_by_name(name))) {
5381 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5382 return AVERROR_BSF_NOT_FOUND;
5385 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5388 if (st->internal->nb_bsfcs) {
5389 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5390 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5392 in_par = st->codecpar;
5393 bsfc->time_base_in = st->time_base;
5396 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5401 if (args && bsfc->filter->priv_class) {
5402 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5403 const char * shorthand[2] = {NULL};
5406 shorthand[0] = opt->name;
5408 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5414 if ((ret = av_bsf_init(bsfc)) < 0) {
5419 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5424 av_log(NULL, AV_LOG_VERBOSE,
5425 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5426 name, args ? args : "");
5431 FF_DISABLE_DEPRECATION_WARNINGS
5432 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5433 AVBitStreamFilterContext *bsfc)
5437 AVPacket new_pkt = *pkt;
5438 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5439 &new_pkt.data, &new_pkt.size,
5440 pkt->data, pkt->size,
5441 pkt->flags & AV_PKT_FLAG_KEY);
5442 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5443 av_packet_unref(pkt);
5444 memset(pkt, 0, sizeof(*pkt));
5447 if(a == 0 && new_pkt.data != pkt->data) {
5448 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
5450 memcpy(t, new_pkt.data, new_pkt.size);
5451 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5456 a = AVERROR(ENOMEM);
5460 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5461 av_buffer_default_free, NULL, 0);
5463 pkt->side_data = NULL;
5464 pkt->side_data_elems = 0;
5465 av_packet_unref(pkt);
5467 av_freep(&new_pkt.data);
5468 a = AVERROR(ENOMEM);
5472 av_log(codec, AV_LOG_ERROR,
5473 "Failed to open bitstream filter %s for stream %d with codec %s",
5474 bsfc->filter->name, pkt->stream_index,
5475 codec->codec ? codec->codec->name : "copy");
5485 FF_ENABLE_DEPRECATION_WARNINGS
5488 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5491 return AVERROR(EINVAL);
5493 if (!(s->oformat->flags & AVFMT_NOFILE))
5494 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5498 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5501 s->io_close(s, *pb);
5505 int ff_is_http_proto(char *filename) {
5506 const char *proto = avio_find_protocol_name(filename);
5507 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5510 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5512 AVDictionaryEntry *entry;
5513 int64_t parsed_timestamp;
5515 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5516 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5517 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5520 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5527 int ff_standardize_creation_time(AVFormatContext *s)
5530 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5532 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5536 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5541 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5543 if (size != AVPALETTE_SIZE) {
5544 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5545 return AVERROR_INVALIDDATA;
5547 memcpy(palette, side_data, AVPALETTE_SIZE);
5551 if (ret == CONTAINS_PAL) {
5553 for (i = 0; i < AVPALETTE_COUNT; i++)
5554 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5561 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5566 ret = av_bprint_finalize(buf, &str);
5569 if (!av_bprint_is_complete(buf)) {
5571 return AVERROR(ENOMEM);
5574 par->extradata = str;
5575 /* Note: the string is NUL terminated (so extradata can be read as a
5576 * string), but the ending character is not accounted in the size (in
5577 * binary formats you are likely not supposed to mux that character). When
5578 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5580 par->extradata_size = buf->len;
5584 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5585 AVStream *ost, const AVStream *ist,
5586 enum AVTimebaseSource copy_tb)
5588 //TODO: use [io]st->internal->avctx
5589 const AVCodecContext *dec_ctx = ist->codec;
5590 AVCodecContext *enc_ctx = ost->codec;
5592 enc_ctx->time_base = ist->time_base;
5594 * Avi is a special case here because it supports variable fps but
5595 * having the fps and timebase differe significantly adds quite some
5598 if (!strcmp(ofmt->name, "avi")) {
5599 #if FF_API_R_FRAME_RATE
5600 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5601 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5602 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5603 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5604 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5605 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5606 enc_ctx->time_base.num = ist->r_frame_rate.den;
5607 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5608 enc_ctx->ticks_per_frame = 2;
5611 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5612 && av_q2d(ist->time_base) < 1.0/500
5613 || copy_tb == AVFMT_TBCF_DECODER) {
5614 enc_ctx->time_base = dec_ctx->time_base;
5615 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5616 enc_ctx->time_base.den *= 2;
5617 enc_ctx->ticks_per_frame = 2;
5619 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5620 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5621 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5622 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5623 && av_q2d(ist->time_base) < 1.0/500
5624 || copy_tb == AVFMT_TBCF_DECODER) {
5625 enc_ctx->time_base = dec_ctx->time_base;
5626 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5630 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5631 && dec_ctx->time_base.num < dec_ctx->time_base.den
5632 && dec_ctx->time_base.num > 0
5633 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5634 enc_ctx->time_base = dec_ctx->time_base;
5637 if (ost->avg_frame_rate.num)
5638 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5640 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5641 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5646 AVRational av_stream_get_codec_timebase(const AVStream *st)
5648 // See avformat_transfer_internal_stream_timing_info() TODO.
5649 #if FF_API_LAVF_AVCTX
5650 FF_DISABLE_DEPRECATION_WARNINGS
5651 return st->codec->time_base;
5652 FF_ENABLE_DEPRECATION_WARNINGS
5654 return st->internal->avctx->time_base;
5658 void ff_format_set_url(AVFormatContext *s, char *url)
5663 #if FF_API_FORMAT_FILENAME
5664 FF_DISABLE_DEPRECATION_WARNINGS
5665 av_strlcpy(s->filename, url, sizeof(s->filename));
5666 FF_ENABLE_DEPRECATION_WARNINGS