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 const 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 ff_const59 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") || !strcmp(s->iformat->name, "wav")) {
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;
840 st = s->streams[pktl->pkt.stream_index];
841 if (s->internal->raw_packet_buffer_remaining_size <= 0)
842 if ((err = probe_codec(s, st, NULL)) < 0)
844 if (st->request_probe <= 0) {
845 ff_packet_list_get(&s->internal->raw_packet_buffer,
846 &s->internal->raw_packet_buffer_end, pkt);
847 s->internal->raw_packet_buffer_remaining_size += pkt->size;
855 ret = s->iformat->read_packet(s, pkt);
857 av_packet_unref(pkt);
859 /* Some demuxers return FFERROR_REDO when they consume
860 data and discard it (ignored streams, junk, extradata).
861 We must re-call the demuxer to get the real packet. */
862 if (ret == FFERROR_REDO)
864 if (!pktl || ret == AVERROR(EAGAIN))
866 for (i = 0; i < s->nb_streams; i++) {
868 if (st->probe_packets || st->request_probe > 0)
869 if ((err = probe_codec(s, st, NULL)) < 0)
871 av_assert0(st->request_probe <= 0);
876 err = av_packet_make_refcounted(pkt);
878 av_packet_unref(pkt);
882 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
883 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
884 av_log(s, AV_LOG_WARNING,
885 "Dropped corrupted packet (stream = %d)\n",
887 av_packet_unref(pkt);
891 av_assert0(pkt->stream_index < (unsigned)s->nb_streams &&
892 "Invalid stream index.\n");
894 st = s->streams[pkt->stream_index];
896 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
897 // correct first time stamps to negative values
898 if (!is_relative(st->first_dts))
899 st->first_dts = wrap_timestamp(st, st->first_dts);
900 if (!is_relative(st->start_time))
901 st->start_time = wrap_timestamp(st, st->start_time);
902 if (!is_relative(st->cur_dts))
903 st->cur_dts = wrap_timestamp(st, st->cur_dts);
906 pkt->dts = wrap_timestamp(st, pkt->dts);
907 pkt->pts = wrap_timestamp(st, pkt->pts);
909 force_codec_ids(s, st);
911 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
912 if (s->use_wallclock_as_timestamps)
913 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
915 if (!pktl && st->request_probe <= 0)
918 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
919 &s->internal->raw_packet_buffer_end,
922 av_packet_unref(pkt);
925 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
927 if ((err = probe_codec(s, st, pkt)) < 0)
933 /**********************************************************/
935 static int determinable_frame_size(AVCodecContext *avctx)
937 switch(avctx->codec_id) {
938 case AV_CODEC_ID_MP1:
939 case AV_CODEC_ID_MP2:
940 case AV_CODEC_ID_MP3:
941 case AV_CODEC_ID_CODEC2:
949 * Return the frame duration in seconds. Return 0 if not available.
951 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
952 AVCodecParserContext *pc, AVPacket *pkt)
954 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
955 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
956 int frame_size, sample_rate;
958 #if FF_API_LAVF_AVCTX
959 FF_DISABLE_DEPRECATION_WARNINGS
960 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
961 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
962 FF_ENABLE_DEPRECATION_WARNINGS
967 switch (st->codecpar->codec_type) {
968 case AVMEDIA_TYPE_VIDEO:
969 if (st->r_frame_rate.num && !pc && s->iformat) {
970 *pnum = st->r_frame_rate.den;
971 *pden = st->r_frame_rate.num;
972 } else if (st->time_base.num * 1000LL > st->time_base.den) {
973 *pnum = st->time_base.num;
974 *pden = st->time_base.den;
975 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
976 av_assert0(st->internal->avctx->ticks_per_frame);
977 av_reduce(pnum, pden,
979 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
982 if (pc && pc->repeat_pict) {
983 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
984 av_reduce(pnum, pden,
985 (*pnum) * (1LL + pc->repeat_pict),
989 /* If this codec can be interlaced or progressive then we need
990 * a parser to compute duration of a packet. Thus if we have
991 * no parser in such case leave duration undefined. */
992 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
996 case AVMEDIA_TYPE_AUDIO:
997 if (st->internal->avctx_inited) {
998 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
999 sample_rate = st->internal->avctx->sample_rate;
1001 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
1002 sample_rate = st->codecpar->sample_rate;
1004 if (frame_size <= 0 || sample_rate <= 0)
1007 *pden = sample_rate;
1014 static int is_intra_only(enum AVCodecID id)
1016 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1019 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1024 static int has_decode_delay_been_guessed(AVStream *st)
1026 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1027 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1029 #if CONFIG_H264_DECODER
1030 if (st->internal->avctx->has_b_frames &&
1031 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1034 if (st->internal->avctx->has_b_frames<3)
1035 return st->nb_decoded_frames >= 7;
1036 else if (st->internal->avctx->has_b_frames<4)
1037 return st->nb_decoded_frames >= 18;
1039 return st->nb_decoded_frames >= 20;
1042 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1046 if (pktl == s->internal->packet_buffer_end)
1047 return s->internal->parse_queue;
1051 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1052 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1053 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1056 int delay = st->internal->avctx->has_b_frames;
1059 if (dts == AV_NOPTS_VALUE) {
1060 int64_t best_score = INT64_MAX;
1061 for (i = 0; i<delay; i++) {
1062 if (st->pts_reorder_error_count[i]) {
1063 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1064 if (score < best_score) {
1066 dts = pts_buffer[i];
1071 for (i = 0; i<delay; i++) {
1072 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1073 int64_t diff = FFABS(pts_buffer[i] - dts)
1074 + (uint64_t)st->pts_reorder_error[i];
1075 diff = FFMAX(diff, st->pts_reorder_error[i]);
1076 st->pts_reorder_error[i] = diff;
1077 st->pts_reorder_error_count[i]++;
1078 if (st->pts_reorder_error_count[i] > 250) {
1079 st->pts_reorder_error[i] >>= 1;
1080 st->pts_reorder_error_count[i] >>= 1;
1087 if (dts == AV_NOPTS_VALUE)
1088 dts = pts_buffer[0];
1094 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1095 * of the packets in a window.
1097 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1098 AVPacketList *pkt_buffer)
1100 AVStream *st = s->streams[stream_index];
1101 int delay = st->internal->avctx->has_b_frames;
1104 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1106 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1107 pts_buffer[i] = AV_NOPTS_VALUE;
1109 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1110 if (pkt_buffer->pkt.stream_index != stream_index)
1113 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1114 pts_buffer[0] = pkt_buffer->pkt.pts;
1115 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1116 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1118 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1123 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1124 int64_t dts, int64_t pts, AVPacket *pkt)
1126 AVStream *st = s->streams[stream_index];
1127 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1128 AVPacketList *pktl_it;
1132 if (st->first_dts != AV_NOPTS_VALUE ||
1133 dts == AV_NOPTS_VALUE ||
1134 st->cur_dts == AV_NOPTS_VALUE ||
1135 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1139 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1141 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1143 if (is_relative(pts))
1146 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1147 if (pktl_it->pkt.stream_index != stream_index)
1149 if (is_relative(pktl_it->pkt.pts))
1150 pktl_it->pkt.pts += shift;
1152 if (is_relative(pktl_it->pkt.dts))
1153 pktl_it->pkt.dts += shift;
1155 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1156 st->start_time = pktl_it->pkt.pts;
1157 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1158 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1162 if (has_decode_delay_been_guessed(st)) {
1163 update_dts_from_pts(s, stream_index, pktl);
1166 if (st->start_time == AV_NOPTS_VALUE) {
1167 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1168 st->start_time = pts;
1170 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1171 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1175 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1176 int stream_index, int duration)
1178 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1179 int64_t cur_dts = RELATIVE_TS_BASE;
1181 if (st->first_dts != AV_NOPTS_VALUE) {
1182 if (st->update_initial_durations_done)
1184 st->update_initial_durations_done = 1;
1185 cur_dts = st->first_dts;
1186 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1187 if (pktl->pkt.stream_index == stream_index) {
1188 if (pktl->pkt.pts != pktl->pkt.dts ||
1189 pktl->pkt.dts != AV_NOPTS_VALUE ||
1192 cur_dts -= duration;
1195 if (pktl && pktl->pkt.dts != st->first_dts) {
1196 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1197 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1201 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1204 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1205 st->first_dts = cur_dts;
1206 } else if (st->cur_dts != RELATIVE_TS_BASE)
1209 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1210 if (pktl->pkt.stream_index != stream_index)
1212 if ((pktl->pkt.pts == pktl->pkt.dts ||
1213 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1214 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1215 pktl->pkt.dts == st->first_dts ||
1216 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1217 !pktl->pkt.duration) {
1218 pktl->pkt.dts = cur_dts;
1219 if (!st->internal->avctx->has_b_frames)
1220 pktl->pkt.pts = cur_dts;
1221 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1222 pktl->pkt.duration = duration;
1225 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1228 st->cur_dts = cur_dts;
1231 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1232 AVCodecParserContext *pc, AVPacket *pkt,
1233 int64_t next_dts, int64_t next_pts)
1235 int num, den, presentation_delayed, delay, i;
1237 AVRational duration;
1238 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1239 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1241 if (s->flags & AVFMT_FLAG_NOFILLIN)
1244 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1245 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1246 if (st->last_dts_for_order_check <= pkt->dts) {
1249 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1250 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1252 st->last_dts_for_order_check);
1253 st->dts_misordered++;
1255 if (st->dts_ordered + st->dts_misordered > 250) {
1256 st->dts_ordered >>= 1;
1257 st->dts_misordered >>= 1;
1261 st->last_dts_for_order_check = pkt->dts;
1262 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1263 pkt->dts = AV_NOPTS_VALUE;
1266 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1267 pkt->dts = AV_NOPTS_VALUE;
1269 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1270 && !st->internal->avctx->has_b_frames)
1271 //FIXME Set low_delay = 0 when has_b_frames = 1
1272 st->internal->avctx->has_b_frames = 1;
1274 /* do we have a video B-frame ? */
1275 delay = st->internal->avctx->has_b_frames;
1276 presentation_delayed = 0;
1278 /* XXX: need has_b_frame, but cannot get it if the codec is
1279 * not initialized */
1281 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1282 presentation_delayed = 1;
1284 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1285 st->pts_wrap_bits < 63 &&
1286 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1287 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1288 pkt->dts -= 1LL << st->pts_wrap_bits;
1290 pkt->pts += 1LL << st->pts_wrap_bits;
1293 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1294 * We take the conservative approach and discard both.
1295 * Note: If this is misbehaving for an H.264 file, then possibly
1296 * presentation_delayed is not set correctly. */
1297 if (delay == 1 && pkt->dts == pkt->pts &&
1298 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1299 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1300 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1301 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1302 pkt->dts = AV_NOPTS_VALUE;
1305 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1306 if (pkt->duration <= 0) {
1307 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1309 duration = (AVRational) {num, den};
1310 pkt->duration = av_rescale_rnd(1,
1311 num * (int64_t) st->time_base.den,
1312 den * (int64_t) st->time_base.num,
1317 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1318 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1320 /* Correct timestamps with byte offset if demuxers only have timestamps
1321 * on packet boundaries */
1322 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1323 /* this will estimate bitrate based on this frame's duration and size */
1324 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1325 if (pkt->pts != AV_NOPTS_VALUE)
1327 if (pkt->dts != AV_NOPTS_VALUE)
1331 /* This may be redundant, but it should not hurt. */
1332 if (pkt->dts != AV_NOPTS_VALUE &&
1333 pkt->pts != AV_NOPTS_VALUE &&
1334 pkt->pts > pkt->dts)
1335 presentation_delayed = 1;
1337 if (s->debug & FF_FDEBUG_TS)
1338 av_log(s, AV_LOG_DEBUG,
1339 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1340 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1341 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1343 /* Interpolate PTS and DTS if they are not present. We skip H264
1344 * currently because delay and has_b_frames are not reliably set. */
1345 if ((delay == 0 || (delay == 1 && pc)) &&
1347 if (presentation_delayed) {
1348 /* DTS = decompression timestamp */
1349 /* PTS = presentation timestamp */
1350 if (pkt->dts == AV_NOPTS_VALUE)
1351 pkt->dts = st->last_IP_pts;
1352 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1353 if (pkt->dts == AV_NOPTS_VALUE)
1354 pkt->dts = st->cur_dts;
1356 /* This is tricky: the dts must be incremented by the duration
1357 * of the frame we are displaying, i.e. the last I- or P-frame. */
1358 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1359 st->last_IP_duration = pkt->duration;
1360 if (pkt->dts != AV_NOPTS_VALUE)
1361 st->cur_dts = pkt->dts + st->last_IP_duration;
1362 if (pkt->dts != AV_NOPTS_VALUE &&
1363 pkt->pts == AV_NOPTS_VALUE &&
1364 st->last_IP_duration > 0 &&
1365 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1366 next_dts != next_pts &&
1367 next_pts != AV_NOPTS_VALUE)
1368 pkt->pts = next_dts;
1370 if ((uint64_t)pkt->duration <= INT32_MAX)
1371 st->last_IP_duration = pkt->duration;
1372 st->last_IP_pts = pkt->pts;
1373 /* Cannot compute PTS if not present (we can compute it only
1374 * by knowing the future. */
1375 } else if (pkt->pts != AV_NOPTS_VALUE ||
1376 pkt->dts != AV_NOPTS_VALUE ||
1377 pkt->duration > 0 ) {
1379 /* presentation is not delayed : PTS and DTS are the same */
1380 if (pkt->pts == AV_NOPTS_VALUE)
1381 pkt->pts = pkt->dts;
1382 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1384 if (pkt->pts == AV_NOPTS_VALUE)
1385 pkt->pts = st->cur_dts;
1386 pkt->dts = pkt->pts;
1387 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1388 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1392 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1393 st->pts_buffer[0] = pkt->pts;
1394 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1395 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1397 if(has_decode_delay_been_guessed(st))
1398 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1400 // We skipped it above so we try here.
1402 // This should happen on the first packet
1403 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1404 if (pkt->dts > st->cur_dts)
1405 st->cur_dts = pkt->dts;
1407 if (s->debug & FF_FDEBUG_TS)
1408 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1409 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1412 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1413 pkt->flags |= AV_PKT_FLAG_KEY;
1414 #if FF_API_CONVERGENCE_DURATION
1415 FF_DISABLE_DEPRECATION_WARNINGS
1417 pkt->convergence_duration = pc->convergence_duration;
1418 FF_ENABLE_DEPRECATION_WARNINGS
1422 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1424 AVPacketList *tmp = *pkt_buf;
1427 AVPacketList *pktl = tmp;
1429 av_packet_unref(&pktl->pkt);
1433 *pkt_buf_end = NULL;
1437 * Parse a packet, add all split parts to parse_queue.
1439 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1441 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1443 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1444 AVStream *st = s->streams[stream_index];
1445 uint8_t *data = pkt ? pkt->data : NULL;
1446 int size = pkt ? pkt->size : 0;
1447 int ret = 0, got_output = 0;
1450 av_init_packet(&flush_pkt);
1453 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1454 // preserve 0-size sync packets
1455 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1458 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1460 int64_t next_pts = pkt->pts;
1461 int64_t next_dts = pkt->dts;
1463 av_init_packet(&out_pkt);
1464 len = av_parser_parse2(st->parser, st->internal->avctx,
1465 &out_pkt.data, &out_pkt.size, data, size,
1466 pkt->pts, pkt->dts, pkt->pos);
1468 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1470 /* increment read pointer */
1474 got_output = !!out_pkt.size;
1479 if (pkt->buf && out_pkt.data == pkt->data) {
1480 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1481 * to data in it and not in the parser's internal buffer. */
1482 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1483 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1484 out_pkt.buf = av_buffer_ref(pkt->buf);
1486 ret = AVERROR(ENOMEM);
1490 ret = av_packet_make_refcounted(&out_pkt);
1495 if (pkt->side_data) {
1496 out_pkt.side_data = pkt->side_data;
1497 out_pkt.side_data_elems = pkt->side_data_elems;
1498 pkt->side_data = NULL;
1499 pkt->side_data_elems = 0;
1502 /* set the duration */
1503 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1504 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1505 if (st->internal->avctx->sample_rate > 0) {
1507 av_rescale_q_rnd(st->parser->duration,
1508 (AVRational) { 1, st->internal->avctx->sample_rate },
1514 out_pkt.stream_index = st->index;
1515 out_pkt.pts = st->parser->pts;
1516 out_pkt.dts = st->parser->dts;
1517 out_pkt.pos = st->parser->pos;
1518 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1520 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1521 out_pkt.pos = st->parser->frame_offset;
1523 if (st->parser->key_frame == 1 ||
1524 (st->parser->key_frame == -1 &&
1525 st->parser->pict_type == AV_PICTURE_TYPE_I))
1526 out_pkt.flags |= AV_PKT_FLAG_KEY;
1528 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1529 out_pkt.flags |= AV_PKT_FLAG_KEY;
1531 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1533 ret = ff_packet_list_put(&s->internal->parse_queue,
1534 &s->internal->parse_queue_end,
1537 av_packet_unref(&out_pkt);
1542 /* end of the stream => close and free the parser */
1543 if (pkt == &flush_pkt) {
1544 av_parser_close(st->parser);
1549 av_packet_unref(pkt);
1553 int ff_packet_list_get(AVPacketList **pkt_buffer,
1554 AVPacketList **pkt_buffer_end,
1558 av_assert0(*pkt_buffer);
1561 *pkt_buffer = pktl->next;
1563 *pkt_buffer_end = NULL;
1568 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1570 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1573 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1575 int ret = 0, i, got_packet = 0;
1576 AVDictionary *metadata = NULL;
1578 av_init_packet(pkt);
1580 while (!got_packet && !s->internal->parse_queue) {
1584 /* read next packet */
1585 ret = ff_read_packet(s, &cur_pkt);
1587 if (ret == AVERROR(EAGAIN))
1589 /* flush the parsers */
1590 for (i = 0; i < s->nb_streams; i++) {
1592 if (st->parser && st->need_parsing)
1593 parse_packet(s, NULL, st->index);
1595 /* all remaining packets are now in parse_queue =>
1596 * really terminate parsing */
1600 st = s->streams[cur_pkt.stream_index];
1602 /* update context if required */
1603 if (st->internal->need_context_update) {
1604 if (avcodec_is_open(st->internal->avctx)) {
1605 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1606 avcodec_close(st->internal->avctx);
1607 st->info->found_decoder = 0;
1610 /* close parser, because it depends on the codec */
1611 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1612 av_parser_close(st->parser);
1616 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1618 av_packet_unref(&cur_pkt);
1622 #if FF_API_LAVF_AVCTX
1623 FF_DISABLE_DEPRECATION_WARNINGS
1624 /* update deprecated public codec context */
1625 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1627 av_packet_unref(&cur_pkt);
1630 FF_ENABLE_DEPRECATION_WARNINGS
1633 st->internal->need_context_update = 0;
1636 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1637 cur_pkt.dts != AV_NOPTS_VALUE &&
1638 cur_pkt.pts < cur_pkt.dts) {
1639 av_log(s, AV_LOG_WARNING,
1640 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1641 cur_pkt.stream_index,
1642 av_ts2str(cur_pkt.pts),
1643 av_ts2str(cur_pkt.dts),
1646 if (s->debug & FF_FDEBUG_TS)
1647 av_log(s, AV_LOG_DEBUG,
1648 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1649 cur_pkt.stream_index,
1650 av_ts2str(cur_pkt.pts),
1651 av_ts2str(cur_pkt.dts),
1652 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1654 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1655 st->parser = av_parser_init(st->codecpar->codec_id);
1657 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1658 "%s, packets or times may be invalid.\n",
1659 avcodec_get_name(st->codecpar->codec_id));
1660 /* no parser available: just output the raw packets */
1661 st->need_parsing = AVSTREAM_PARSE_NONE;
1662 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1663 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1664 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1665 st->parser->flags |= PARSER_FLAG_ONCE;
1666 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1667 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1670 if (!st->need_parsing || !st->parser) {
1671 /* no parsing needed: we just output the packet as is */
1673 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1674 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1675 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1676 ff_reduce_index(s, st->index);
1677 av_add_index_entry(st, pkt->pos, pkt->dts,
1678 0, 0, AVINDEX_KEYFRAME);
1681 } else if (st->discard < AVDISCARD_ALL) {
1682 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1684 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1685 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1686 st->codecpar->channels = st->internal->avctx->channels;
1687 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1688 st->codecpar->codec_id = st->internal->avctx->codec_id;
1691 av_packet_unref(&cur_pkt);
1693 if (pkt->flags & AV_PKT_FLAG_KEY)
1694 st->skip_to_keyframe = 0;
1695 if (st->skip_to_keyframe) {
1696 av_packet_unref(&cur_pkt);
1704 if (!got_packet && s->internal->parse_queue)
1705 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1708 AVStream *st = s->streams[pkt->stream_index];
1709 int discard_padding = 0;
1710 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1711 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1712 int64_t sample = ts_to_samples(st, pts);
1713 int duration = ts_to_samples(st, pkt->duration);
1714 int64_t end_sample = sample + duration;
1715 if (duration > 0 && end_sample >= st->first_discard_sample &&
1716 sample < st->last_discard_sample)
1717 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1719 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1720 st->skip_samples = st->start_skip_samples;
1721 if (st->skip_samples || discard_padding) {
1722 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1724 AV_WL32(p, st->skip_samples);
1725 AV_WL32(p + 4, discard_padding);
1726 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1728 st->skip_samples = 0;
1731 if (st->inject_global_side_data) {
1732 for (i = 0; i < st->nb_side_data; i++) {
1733 AVPacketSideData *src_sd = &st->side_data[i];
1736 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1739 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1741 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1745 memcpy(dst_data, src_sd->data, src_sd->size);
1747 st->inject_global_side_data = 0;
1751 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1753 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1754 av_dict_copy(&s->metadata, metadata, 0);
1755 av_dict_free(&metadata);
1756 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1759 #if FF_API_LAVF_AVCTX
1760 update_stream_avctx(s);
1763 if (s->debug & FF_FDEBUG_TS)
1764 av_log(s, AV_LOG_DEBUG,
1765 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1766 "size=%d, duration=%"PRId64", flags=%d\n",
1768 av_ts2str(pkt->pts),
1769 av_ts2str(pkt->dts),
1770 pkt->size, pkt->duration, pkt->flags);
1772 /* A demuxer might have returned EOF because of an IO error, let's
1773 * propagate this back to the user. */
1774 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1780 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1782 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1788 ret = s->internal->packet_buffer
1789 ? ff_packet_list_get(&s->internal->packet_buffer,
1790 &s->internal->packet_buffer_end, pkt)
1791 : read_frame_internal(s, pkt);
1798 AVPacketList *pktl = s->internal->packet_buffer;
1801 AVPacket *next_pkt = &pktl->pkt;
1803 if (next_pkt->dts != AV_NOPTS_VALUE) {
1804 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1805 // last dts seen for this stream. if any of packets following
1806 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1807 int64_t last_dts = next_pkt->dts;
1808 av_assert2(wrap_bits <= 64);
1809 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1810 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1811 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1812 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1814 next_pkt->pts = pktl->pkt.dts;
1816 if (last_dts != AV_NOPTS_VALUE) {
1817 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1818 last_dts = pktl->pkt.dts;
1823 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1824 // Fixing the last reference frame had none pts issue (For MXF etc).
1825 // We only do this when
1827 // 2. we are not able to resolve a pts value for current packet.
1828 // 3. the packets for this stream at the end of the files had valid dts.
1829 next_pkt->pts = last_dts + next_pkt->duration;
1831 pktl = s->internal->packet_buffer;
1834 /* read packet from packet buffer, if there is data */
1835 st = s->streams[next_pkt->stream_index];
1836 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1837 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1838 ret = ff_packet_list_get(&s->internal->packet_buffer,
1839 &s->internal->packet_buffer_end, pkt);
1844 ret = read_frame_internal(s, pkt);
1846 if (pktl && ret != AVERROR(EAGAIN)) {
1853 ret = ff_packet_list_put(&s->internal->packet_buffer,
1854 &s->internal->packet_buffer_end,
1855 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1856 av_packet_unref(pkt);
1863 st = s->streams[pkt->stream_index];
1864 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1865 ff_reduce_index(s, st->index);
1866 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1869 if (is_relative(pkt->dts))
1870 pkt->dts -= RELATIVE_TS_BASE;
1871 if (is_relative(pkt->pts))
1872 pkt->pts -= RELATIVE_TS_BASE;
1877 /* XXX: suppress the packet queue */
1878 static void flush_packet_queue(AVFormatContext *s)
1882 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1883 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1884 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1886 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1889 /*******************************************************/
1892 int av_find_default_stream_index(AVFormatContext *s)
1896 int best_stream = 0;
1897 int best_score = INT_MIN;
1899 if (s->nb_streams <= 0)
1901 for (i = 0; i < s->nb_streams; i++) {
1904 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1905 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1907 if (st->codecpar->width && st->codecpar->height)
1911 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1912 if (st->codecpar->sample_rate)
1915 if (st->codec_info_nb_frames)
1918 if (st->discard != AVDISCARD_ALL)
1921 if (score > best_score) {
1929 /** Flush the frame reader. */
1930 void ff_read_frame_flush(AVFormatContext *s)
1935 flush_packet_queue(s);
1937 /* Reset read state for each stream. */
1938 for (i = 0; i < s->nb_streams; i++) {
1942 av_parser_close(st->parser);
1945 st->last_IP_pts = AV_NOPTS_VALUE;
1946 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1947 if (st->first_dts == AV_NOPTS_VALUE)
1948 st->cur_dts = RELATIVE_TS_BASE;
1950 /* We set the current DTS to an unspecified origin. */
1951 st->cur_dts = AV_NOPTS_VALUE;
1953 st->probe_packets = MAX_PROBE_PACKETS;
1955 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1956 st->pts_buffer[j] = AV_NOPTS_VALUE;
1958 if (s->internal->inject_global_side_data)
1959 st->inject_global_side_data = 1;
1961 st->skip_samples = 0;
1965 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1969 for (i = 0; i < s->nb_streams; i++) {
1970 AVStream *st = s->streams[i];
1973 av_rescale(timestamp,
1974 st->time_base.den * (int64_t) ref_st->time_base.num,
1975 st->time_base.num * (int64_t) ref_st->time_base.den);
1979 void ff_reduce_index(AVFormatContext *s, int stream_index)
1981 AVStream *st = s->streams[stream_index];
1982 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1984 if ((unsigned) st->nb_index_entries >= max_entries) {
1986 for (i = 0; 2 * i < st->nb_index_entries; i++)
1987 st->index_entries[i] = st->index_entries[2 * i];
1988 st->nb_index_entries = i;
1992 int ff_add_index_entry(AVIndexEntry **index_entries,
1993 int *nb_index_entries,
1994 unsigned int *index_entries_allocated_size,
1995 int64_t pos, int64_t timestamp,
1996 int size, int distance, int flags)
1998 AVIndexEntry *entries, *ie;
2001 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
2004 if (timestamp == AV_NOPTS_VALUE)
2005 return AVERROR(EINVAL);
2007 if (size < 0 || size > 0x3FFFFFFF)
2008 return AVERROR(EINVAL);
2010 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2011 timestamp -= RELATIVE_TS_BASE;
2013 entries = av_fast_realloc(*index_entries,
2014 index_entries_allocated_size,
2015 (*nb_index_entries + 1) *
2016 sizeof(AVIndexEntry));
2020 *index_entries = entries;
2022 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2023 timestamp, AVSEEK_FLAG_ANY);
2026 index = (*nb_index_entries)++;
2027 ie = &entries[index];
2028 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2030 ie = &entries[index];
2031 if (ie->timestamp != timestamp) {
2032 if (ie->timestamp <= timestamp)
2034 memmove(entries + index + 1, entries + index,
2035 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2036 (*nb_index_entries)++;
2037 } else if (ie->pos == pos && distance < ie->min_distance)
2038 // do not reduce the distance
2039 distance = ie->min_distance;
2043 ie->timestamp = timestamp;
2044 ie->min_distance = distance;
2051 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2052 int size, int distance, int flags)
2054 timestamp = wrap_timestamp(st, timestamp);
2055 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2056 &st->index_entries_allocated_size, pos,
2057 timestamp, size, distance, flags);
2060 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2061 int64_t wanted_timestamp, int flags)
2069 // Optimize appending index entries at the end.
2070 if (b && entries[b - 1].timestamp < wanted_timestamp)
2076 // Search for the next non-discarded packet.
2077 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2079 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2085 timestamp = entries[m].timestamp;
2086 if (timestamp >= wanted_timestamp)
2088 if (timestamp <= wanted_timestamp)
2091 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2093 if (!(flags & AVSEEK_FLAG_ANY))
2094 while (m >= 0 && m < nb_entries &&
2095 !(entries[m].flags & AVINDEX_KEYFRAME))
2096 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2098 if (m == nb_entries)
2103 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2106 int64_t pos_delta = 0;
2108 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2109 const char *proto = avio_find_protocol_name(s->url);
2112 av_log(s, AV_LOG_INFO,
2113 "Protocol name not provided, cannot determine if input is local or "
2114 "a network protocol, buffers and access patterns cannot be configured "
2115 "optimally without knowing the protocol\n");
2118 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2121 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2122 AVStream *st1 = s->streams[ist1];
2123 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2124 AVStream *st2 = s->streams[ist2];
2130 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2131 AVIndexEntry *e1 = &st1->index_entries[i1];
2132 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2134 skip = FFMAX(skip, e1->size);
2135 for (; i2 < st2->nb_index_entries; i2++) {
2136 AVIndexEntry *e2 = &st2->index_entries[i2];
2137 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2138 if (e2_pts - e1_pts < time_tolerance)
2140 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2148 /* XXX This could be adjusted depending on protocol*/
2149 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2150 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2152 /* realloc the buffer and the original data will be retained */
2153 if (ffio_realloc_buf(s->pb, pos_delta)) {
2154 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2158 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2161 if (skip < (1<<23)) {
2162 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2166 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2168 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2169 wanted_timestamp, flags);
2172 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2173 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2175 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2176 if (stream_index >= 0)
2177 ts = wrap_timestamp(s->streams[stream_index], ts);
2181 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2182 int64_t target_ts, int flags)
2184 const AVInputFormat *avif = s->iformat;
2185 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2186 int64_t ts_min, ts_max, ts;
2191 if (stream_index < 0)
2194 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2197 ts_min = AV_NOPTS_VALUE;
2198 pos_limit = -1; // GCC falsely says it may be uninitialized.
2200 st = s->streams[stream_index];
2201 if (st->index_entries) {
2204 /* FIXME: Whole function must be checked for non-keyframe entries in
2205 * index case, especially read_timestamp(). */
2206 index = av_index_search_timestamp(st, target_ts,
2207 flags | AVSEEK_FLAG_BACKWARD);
2208 index = FFMAX(index, 0);
2209 e = &st->index_entries[index];
2211 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2213 ts_min = e->timestamp;
2214 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2215 pos_min, av_ts2str(ts_min));
2217 av_assert1(index == 0);
2220 index = av_index_search_timestamp(st, target_ts,
2221 flags & ~AVSEEK_FLAG_BACKWARD);
2222 av_assert0(index < st->nb_index_entries);
2224 e = &st->index_entries[index];
2225 av_assert1(e->timestamp >= target_ts);
2227 ts_max = e->timestamp;
2228 pos_limit = pos_max - e->min_distance;
2229 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2230 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2234 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2235 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2240 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2243 ff_read_frame_flush(s);
2244 ff_update_cur_dts(s, st, ts);
2249 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2250 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2252 int64_t step = 1024;
2253 int64_t limit, ts_max;
2254 int64_t filesize = avio_size(s->pb);
2255 int64_t pos_max = filesize - 1;
2258 pos_max = FFMAX(0, (pos_max) - step);
2259 ts_max = ff_read_timestamp(s, stream_index,
2260 &pos_max, limit, read_timestamp);
2262 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2263 if (ts_max == AV_NOPTS_VALUE)
2267 int64_t tmp_pos = pos_max + 1;
2268 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2269 &tmp_pos, INT64_MAX, read_timestamp);
2270 if (tmp_ts == AV_NOPTS_VALUE)
2272 av_assert0(tmp_pos > pos_max);
2275 if (tmp_pos >= filesize)
2287 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2288 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2289 int64_t ts_min, int64_t ts_max,
2290 int flags, int64_t *ts_ret,
2291 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2292 int64_t *, int64_t))
2299 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2301 if (ts_min == AV_NOPTS_VALUE) {
2302 pos_min = s->internal->data_offset;
2303 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2304 if (ts_min == AV_NOPTS_VALUE)
2308 if (ts_min >= target_ts) {
2313 if (ts_max == AV_NOPTS_VALUE) {
2314 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2316 pos_limit = pos_max;
2319 if (ts_max <= target_ts) {
2324 av_assert0(ts_min < ts_max);
2327 while (pos_min < pos_limit) {
2328 av_log(s, AV_LOG_TRACE,
2329 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2330 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2331 av_assert0(pos_limit <= pos_max);
2333 if (no_change == 0) {
2334 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2335 // interpolate position (better than dichotomy)
2336 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2338 pos_min - approximate_keyframe_distance;
2339 } else if (no_change == 1) {
2340 // bisection if interpolation did not change min / max pos last time
2341 pos = (pos_min + pos_limit) >> 1;
2343 /* linear search if bisection failed, can only happen if there
2344 * are very few or no keyframes between min/max */
2349 else if (pos > pos_limit)
2353 // May pass pos_limit instead of -1.
2354 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2359 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2360 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2361 pos_min, pos, pos_max,
2362 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2363 pos_limit, start_pos, no_change);
2364 if (ts == AV_NOPTS_VALUE) {
2365 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2368 if (target_ts <= ts) {
2369 pos_limit = start_pos - 1;
2373 if (target_ts >= ts) {
2379 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2380 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2383 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2385 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2386 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2387 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2393 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2394 int64_t pos, int flags)
2396 int64_t pos_min, pos_max;
2398 pos_min = s->internal->data_offset;
2399 pos_max = avio_size(s->pb) - 1;
2403 else if (pos > pos_max)
2406 avio_seek(s->pb, pos, SEEK_SET);
2408 s->io_repositioned = 1;
2413 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2414 int64_t timestamp, int flags)
2421 st = s->streams[stream_index];
2423 index = av_index_search_timestamp(st, timestamp, flags);
2425 if (index < 0 && st->nb_index_entries &&
2426 timestamp < st->index_entries[0].timestamp)
2429 if (index < 0 || index == st->nb_index_entries - 1) {
2433 if (st->nb_index_entries) {
2434 av_assert0(st->index_entries);
2435 ie = &st->index_entries[st->nb_index_entries - 1];
2436 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2438 ff_update_cur_dts(s, st, ie->timestamp);
2440 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2446 read_status = av_read_frame(s, &pkt);
2447 } while (read_status == AVERROR(EAGAIN));
2448 if (read_status < 0)
2450 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2451 if (pkt.flags & AV_PKT_FLAG_KEY) {
2452 av_packet_unref(&pkt);
2455 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2456 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);
2457 av_packet_unref(&pkt);
2461 av_packet_unref(&pkt);
2463 index = av_index_search_timestamp(st, timestamp, flags);
2468 ff_read_frame_flush(s);
2469 if (s->iformat->read_seek)
2470 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2472 ie = &st->index_entries[index];
2473 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2475 ff_update_cur_dts(s, st, ie->timestamp);
2480 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2481 int64_t timestamp, int flags)
2486 if (flags & AVSEEK_FLAG_BYTE) {
2487 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2489 ff_read_frame_flush(s);
2490 return seek_frame_byte(s, stream_index, timestamp, flags);
2493 if (stream_index < 0) {
2494 stream_index = av_find_default_stream_index(s);
2495 if (stream_index < 0)
2498 st = s->streams[stream_index];
2499 /* timestamp for default must be expressed in AV_TIME_BASE units */
2500 timestamp = av_rescale(timestamp, st->time_base.den,
2501 AV_TIME_BASE * (int64_t) st->time_base.num);
2504 /* first, we try the format specific seek */
2505 if (s->iformat->read_seek) {
2506 ff_read_frame_flush(s);
2507 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2513 if (s->iformat->read_timestamp &&
2514 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2515 ff_read_frame_flush(s);
2516 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2517 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2518 ff_read_frame_flush(s);
2519 return seek_frame_generic(s, stream_index, timestamp, flags);
2524 int av_seek_frame(AVFormatContext *s, int stream_index,
2525 int64_t timestamp, int flags)
2529 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2530 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2531 if ((flags & AVSEEK_FLAG_BACKWARD))
2535 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2536 flags & ~AVSEEK_FLAG_BACKWARD);
2539 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2542 ret = avformat_queue_attached_pictures(s);
2547 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2548 int64_t ts, int64_t max_ts, int flags)
2550 if (min_ts > ts || max_ts < ts)
2552 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2553 return AVERROR(EINVAL);
2556 flags |= AVSEEK_FLAG_ANY;
2557 flags &= ~AVSEEK_FLAG_BACKWARD;
2559 if (s->iformat->read_seek2) {
2561 ff_read_frame_flush(s);
2563 if (stream_index == -1 && s->nb_streams == 1) {
2564 AVRational time_base = s->streams[0]->time_base;
2565 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2566 min_ts = av_rescale_rnd(min_ts, time_base.den,
2567 time_base.num * (int64_t)AV_TIME_BASE,
2568 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2569 max_ts = av_rescale_rnd(max_ts, time_base.den,
2570 time_base.num * (int64_t)AV_TIME_BASE,
2571 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2575 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2579 ret = avformat_queue_attached_pictures(s);
2583 if (s->iformat->read_timestamp) {
2584 // try to seek via read_timestamp()
2587 // Fall back on old API if new is not implemented but old is.
2588 // Note the old API has somewhat different semantics.
2589 if (s->iformat->read_seek || 1) {
2590 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2591 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2592 if (ret<0 && ts != min_ts && max_ts != ts) {
2593 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2595 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2600 // try some generic seek like seek_frame_generic() but with new ts semantics
2601 return -1; //unreachable
2604 int avformat_flush(AVFormatContext *s)
2606 ff_read_frame_flush(s);
2610 /*******************************************************/
2613 * Return TRUE if the stream has accurate duration in any stream.
2615 * @return TRUE if the stream has accurate duration for at least one component.
2617 static int has_duration(AVFormatContext *ic)
2622 for (i = 0; i < ic->nb_streams; i++) {
2623 st = ic->streams[i];
2624 if (st->duration != AV_NOPTS_VALUE)
2627 if (ic->duration != AV_NOPTS_VALUE)
2633 * Estimate the stream timings from the one of each components.
2635 * Also computes the global bitrate if possible.
2637 static void update_stream_timings(AVFormatContext *ic)
2639 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2640 int64_t duration, duration1, duration_text, filesize;
2644 start_time = INT64_MAX;
2645 start_time_text = INT64_MAX;
2646 end_time = INT64_MIN;
2647 end_time_text = INT64_MIN;
2648 duration = INT64_MIN;
2649 duration_text = INT64_MIN;
2651 for (i = 0; i < ic->nb_streams; i++) {
2652 AVStream *st = ic->streams[i];
2653 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2654 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2655 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2656 start_time1 = av_rescale_q(st->start_time, st->time_base,
2659 start_time_text = FFMIN(start_time_text, start_time1);
2661 start_time = FFMIN(start_time, start_time1);
2662 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2664 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2665 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2666 end_time1 += start_time1;
2668 end_time_text = FFMAX(end_time_text, end_time1);
2670 end_time = FFMAX(end_time, end_time1);
2672 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2673 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2674 p->start_time = start_time1;
2675 if (p->end_time < end_time1)
2676 p->end_time = end_time1;
2679 if (st->duration != AV_NOPTS_VALUE) {
2680 duration1 = av_rescale_q(st->duration, st->time_base,
2683 duration_text = FFMAX(duration_text, duration1);
2685 duration = FFMAX(duration, duration1);
2688 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2689 start_time = start_time_text;
2690 else if (start_time > start_time_text)
2691 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2693 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2694 end_time = end_time_text;
2695 else if (end_time < end_time_text)
2696 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2698 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2699 duration = duration_text;
2700 else if (duration < duration_text)
2701 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2703 if (start_time != INT64_MAX) {
2704 ic->start_time = start_time;
2705 if (end_time != INT64_MIN) {
2706 if (ic->nb_programs > 1) {
2707 for (i = 0; i < ic->nb_programs; i++) {
2708 p = ic->programs[i];
2709 if (p->start_time != AV_NOPTS_VALUE &&
2710 p->end_time > p->start_time &&
2711 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2712 duration = FFMAX(duration, p->end_time - p->start_time);
2714 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2715 duration = FFMAX(duration, end_time - start_time);
2719 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2720 ic->duration = duration;
2722 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2723 /* compute the bitrate */
2724 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2725 (double) ic->duration;
2726 if (bitrate >= 0 && bitrate <= INT64_MAX)
2727 ic->bit_rate = bitrate;
2731 static void fill_all_stream_timings(AVFormatContext *ic)
2736 update_stream_timings(ic);
2737 for (i = 0; i < ic->nb_streams; i++) {
2738 st = ic->streams[i];
2739 if (st->start_time == AV_NOPTS_VALUE) {
2740 if (ic->start_time != AV_NOPTS_VALUE)
2741 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2743 if (ic->duration != AV_NOPTS_VALUE)
2744 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2750 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2752 int64_t filesize, duration;
2753 int i, show_warning = 0;
2756 /* if bit_rate is already set, we believe it */
2757 if (ic->bit_rate <= 0) {
2758 int64_t bit_rate = 0;
2759 for (i = 0; i < ic->nb_streams; i++) {
2760 st = ic->streams[i];
2761 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2762 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2763 if (st->codecpar->bit_rate > 0) {
2764 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2768 bit_rate += st->codecpar->bit_rate;
2769 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2770 // If we have a videostream with packets but without a bitrate
2771 // then consider the sum not known
2776 ic->bit_rate = bit_rate;
2779 /* if duration is already set, we believe it */
2780 if (ic->duration == AV_NOPTS_VALUE &&
2781 ic->bit_rate != 0) {
2782 filesize = ic->pb ? avio_size(ic->pb) : 0;
2783 if (filesize > ic->internal->data_offset) {
2784 filesize -= ic->internal->data_offset;
2785 for (i = 0; i < ic->nb_streams; i++) {
2786 st = ic->streams[i];
2787 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2788 && st->duration == AV_NOPTS_VALUE) {
2789 duration = av_rescale(8 * filesize, st->time_base.den,
2791 (int64_t) st->time_base.num);
2792 st->duration = duration;
2799 av_log(ic, AV_LOG_WARNING,
2800 "Estimating duration from bitrate, this may be inaccurate\n");
2803 #define DURATION_MAX_READ_SIZE 250000LL
2804 #define DURATION_MAX_RETRY 6
2806 /* only usable for MPEG-PS streams */
2807 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2809 AVPacket pkt1, *pkt = &pkt1;
2811 int num, den, read_size, i, ret;
2812 int found_duration = 0;
2814 int64_t filesize, offset, duration;
2817 /* flush packet queue */
2818 flush_packet_queue(ic);
2820 for (i = 0; i < ic->nb_streams; i++) {
2821 st = ic->streams[i];
2822 if (st->start_time == AV_NOPTS_VALUE &&
2823 st->first_dts == AV_NOPTS_VALUE &&
2824 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2825 av_log(ic, AV_LOG_WARNING,
2826 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2829 av_parser_close(st->parser);
2834 if (ic->skip_estimate_duration_from_pts) {
2835 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2836 goto skip_duration_calc;
2839 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2840 /* estimate the end time (duration) */
2841 /* XXX: may need to support wrapping */
2842 filesize = ic->pb ? avio_size(ic->pb) : 0;
2844 is_end = found_duration;
2845 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2849 avio_seek(ic->pb, offset, SEEK_SET);
2852 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2856 ret = ff_read_packet(ic, pkt);
2857 } while (ret == AVERROR(EAGAIN));
2860 read_size += pkt->size;
2861 st = ic->streams[pkt->stream_index];
2862 if (pkt->pts != AV_NOPTS_VALUE &&
2863 (st->start_time != AV_NOPTS_VALUE ||
2864 st->first_dts != AV_NOPTS_VALUE)) {
2865 if (pkt->duration == 0) {
2866 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2868 pkt->duration = av_rescale_rnd(1,
2869 num * (int64_t) st->time_base.den,
2870 den * (int64_t) st->time_base.num,
2874 duration = pkt->pts + pkt->duration;
2876 if (st->start_time != AV_NOPTS_VALUE)
2877 duration -= st->start_time;
2879 duration -= st->first_dts;
2881 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2882 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2883 st->duration = duration;
2884 st->info->last_duration = duration;
2887 av_packet_unref(pkt);
2890 /* check if all audio/video streams have valid duration */
2893 for (i = 0; i < ic->nb_streams; i++) {
2894 st = ic->streams[i];
2895 switch (st->codecpar->codec_type) {
2896 case AVMEDIA_TYPE_VIDEO:
2897 case AVMEDIA_TYPE_AUDIO:
2898 if (st->duration == AV_NOPTS_VALUE)
2905 ++retry <= DURATION_MAX_RETRY);
2907 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2909 /* warn about audio/video streams which duration could not be estimated */
2910 for (i = 0; i < ic->nb_streams; i++) {
2911 st = ic->streams[i];
2912 if (st->duration == AV_NOPTS_VALUE) {
2913 switch (st->codecpar->codec_type) {
2914 case AVMEDIA_TYPE_VIDEO:
2915 case AVMEDIA_TYPE_AUDIO:
2916 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2917 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2919 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2924 fill_all_stream_timings(ic);
2926 avio_seek(ic->pb, old_offset, SEEK_SET);
2927 for (i = 0; i < ic->nb_streams; i++) {
2930 st = ic->streams[i];
2931 st->cur_dts = st->first_dts;
2932 st->last_IP_pts = AV_NOPTS_VALUE;
2933 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2934 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2935 st->pts_buffer[j] = AV_NOPTS_VALUE;
2939 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2943 /* get the file size, if possible */
2944 if (ic->iformat->flags & AVFMT_NOFILE) {
2947 file_size = avio_size(ic->pb);
2948 file_size = FFMAX(0, file_size);
2951 if ((!strcmp(ic->iformat->name, "mpeg") ||
2952 !strcmp(ic->iformat->name, "mpegts")) &&
2953 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2954 /* get accurate estimate from the PTSes */
2955 estimate_timings_from_pts(ic, old_offset);
2956 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2957 } else if (has_duration(ic)) {
2958 /* at least one component has timings - we use them for all
2960 fill_all_stream_timings(ic);
2961 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2963 /* less precise: use bitrate info */
2964 estimate_timings_from_bit_rate(ic);
2965 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2967 update_stream_timings(ic);
2971 AVStream av_unused *st;
2972 for (i = 0; i < ic->nb_streams; i++) {
2973 st = ic->streams[i];
2974 if (st->time_base.den)
2975 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2976 (double) st->start_time * av_q2d(st->time_base),
2977 (double) st->duration * av_q2d(st->time_base));
2979 av_log(ic, AV_LOG_TRACE,
2980 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2981 (double) ic->start_time / AV_TIME_BASE,
2982 (double) ic->duration / AV_TIME_BASE,
2983 (int64_t)ic->bit_rate / 1000);
2987 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2989 AVCodecContext *avctx = st->internal->avctx;
2991 #define FAIL(errmsg) do { \
2993 *errmsg_ptr = errmsg; \
2997 if ( avctx->codec_id == AV_CODEC_ID_NONE
2998 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2999 FAIL("unknown codec");
3000 switch (avctx->codec_type) {
3001 case AVMEDIA_TYPE_AUDIO:
3002 if (!avctx->frame_size && determinable_frame_size(avctx))
3003 FAIL("unspecified frame size");
3004 if (st->info->found_decoder >= 0 &&
3005 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
3006 FAIL("unspecified sample format");
3007 if (!avctx->sample_rate)
3008 FAIL("unspecified sample rate");
3009 if (!avctx->channels)
3010 FAIL("unspecified number of channels");
3011 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3012 FAIL("no decodable DTS frames");
3014 case AVMEDIA_TYPE_VIDEO:
3016 FAIL("unspecified size");
3017 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3018 FAIL("unspecified pixel format");
3019 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3020 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3021 FAIL("no frame in rv30/40 and no sar");
3023 case AVMEDIA_TYPE_SUBTITLE:
3024 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3025 FAIL("unspecified size");
3027 case AVMEDIA_TYPE_DATA:
3028 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3034 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3035 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3036 AVDictionary **options)
3038 AVCodecContext *avctx = st->internal->avctx;
3039 const AVCodec *codec;
3040 int got_picture = 1, ret = 0;
3041 AVFrame *frame = av_frame_alloc();
3042 AVSubtitle subtitle;
3043 AVPacket pkt = *avpkt;
3044 int do_skip_frame = 0;
3045 enum AVDiscard skip_frame;
3048 return AVERROR(ENOMEM);
3050 if (!avcodec_is_open(avctx) &&
3051 st->info->found_decoder <= 0 &&
3052 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3053 AVDictionary *thread_opt = NULL;
3055 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3058 st->info->found_decoder = -st->codecpar->codec_id;
3063 /* Force thread count to 1 since the H.264 decoder will not extract
3064 * SPS and PPS to extradata during multi-threaded decoding. */
3065 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3066 if (s->codec_whitelist)
3067 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3068 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3070 av_dict_free(&thread_opt);
3072 st->info->found_decoder = -avctx->codec_id;
3075 st->info->found_decoder = 1;
3076 } else if (!st->info->found_decoder)
3077 st->info->found_decoder = 1;
3079 if (st->info->found_decoder < 0) {
3084 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3086 skip_frame = avctx->skip_frame;
3087 avctx->skip_frame = AVDISCARD_ALL;
3090 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3092 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3093 (!st->codec_info_nb_frames &&
3094 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3096 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3097 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3098 ret = avcodec_send_packet(avctx, &pkt);
3099 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3103 ret = avcodec_receive_frame(avctx, frame);
3106 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3108 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3109 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3110 &got_picture, &pkt);
3116 st->nb_decoded_frames++;
3121 if (!pkt.data && !got_picture)
3125 if (do_skip_frame) {
3126 avctx->skip_frame = skip_frame;
3129 av_frame_free(&frame);
3133 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3135 while (tags->id != AV_CODEC_ID_NONE) {
3143 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3146 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3147 if (tag == tags[i].tag)
3149 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3150 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3152 return AV_CODEC_ID_NONE;
3155 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3157 if (bps <= 0 || bps > 64)
3158 return AV_CODEC_ID_NONE;
3163 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3165 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3167 return AV_CODEC_ID_NONE;
3172 if (sflags & (1 << (bps - 1))) {
3175 return AV_CODEC_ID_PCM_S8;
3177 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3179 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3181 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3183 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3185 return AV_CODEC_ID_NONE;
3190 return AV_CODEC_ID_PCM_U8;
3192 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3194 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3196 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3198 return AV_CODEC_ID_NONE;
3204 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3207 if (!av_codec_get_tag2(tags, id, &tag))
3212 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3216 for (i = 0; tags && tags[i]; i++) {
3217 const AVCodecTag *codec_tags = tags[i];
3218 while (codec_tags->id != AV_CODEC_ID_NONE) {
3219 if (codec_tags->id == id) {
3220 *tag = codec_tags->tag;
3229 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3232 for (i = 0; tags && tags[i]; i++) {
3233 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3234 if (id != AV_CODEC_ID_NONE)
3237 return AV_CODEC_ID_NONE;
3240 static void compute_chapters_end(AVFormatContext *s)
3243 int64_t max_time = 0;
3245 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3246 max_time = s->duration +
3247 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3249 for (i = 0; i < s->nb_chapters; i++)
3250 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3251 AVChapter *ch = s->chapters[i];
3252 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3256 for (j = 0; j < s->nb_chapters; j++) {
3257 AVChapter *ch1 = s->chapters[j];
3258 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3260 if (j != i && next_start > ch->start && next_start < end)
3263 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3267 static int get_std_framerate(int i)
3270 return (i + 1) * 1001;
3274 return (i + 31) * 1001 * 12;
3278 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3282 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3285 /* Is the time base unreliable?
3286 * This is a heuristic to balance between quick acceptance of the values in
3287 * the headers vs. some extra checks.
3288 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3289 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3290 * And there are "variable" fps files this needs to detect as well. */
3291 static int tb_unreliable(AVCodecContext *c)
3293 if (c->time_base.den >= 101LL * c->time_base.num ||
3294 c->time_base.den < 5LL * c->time_base.num ||
3295 // c->codec_tag == AV_RL32("DIVX") ||
3296 // c->codec_tag == AV_RL32("XVID") ||
3297 c->codec_tag == AV_RL32("mp4v") ||
3298 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3299 c->codec_id == AV_CODEC_ID_GIF ||
3300 c->codec_id == AV_CODEC_ID_HEVC ||
3301 c->codec_id == AV_CODEC_ID_H264)
3306 int ff_alloc_extradata(AVCodecParameters *par, int size)
3308 av_freep(&par->extradata);
3309 par->extradata_size = 0;
3311 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3312 return AVERROR(EINVAL);
3314 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3315 if (!par->extradata)
3316 return AVERROR(ENOMEM);
3318 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3319 par->extradata_size = size;
3324 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3326 int ret = ff_alloc_extradata(par, size);
3329 ret = avio_read(pb, par->extradata, size);
3331 av_freep(&par->extradata);
3332 par->extradata_size = 0;
3333 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3334 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3340 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3343 int64_t last = st->info->last_dts;
3345 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3346 && ts - (uint64_t)last < INT64_MAX) {
3347 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3348 int64_t duration = ts - last;
3350 if (!st->info->duration_error)
3351 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3352 if (!st->info->duration_error)
3353 return AVERROR(ENOMEM);
3355 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3356 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3357 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3358 if (st->info->duration_error[0][1][i] < 1e10) {
3359 int framerate = get_std_framerate(i);
3360 double sdts = dts*framerate/(1001*12);
3361 for (j= 0; j<2; j++) {
3362 int64_t ticks = llrint(sdts+j*0.5);
3363 double error= sdts - ticks + j*0.5;
3364 st->info->duration_error[j][0][i] += error;
3365 st->info->duration_error[j][1][i] += error*error;
3369 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3370 st->info->duration_count++;
3371 st->info->rfps_duration_sum += duration;
3374 if (st->info->duration_count % 10 == 0) {
3375 int n = st->info->duration_count;
3376 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3377 if (st->info->duration_error[0][1][i] < 1e10) {
3378 double a0 = st->info->duration_error[0][0][i] / n;
3379 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3380 double a1 = st->info->duration_error[1][0][i] / n;
3381 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3382 if (error0 > 0.04 && error1 > 0.04) {
3383 st->info->duration_error[0][1][i] = 2e10;
3384 st->info->duration_error[1][1][i] = 2e10;
3390 // ignore the first 4 values, they might have some random jitter
3391 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3392 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3394 if (ts != AV_NOPTS_VALUE)
3395 st->info->last_dts = ts;
3400 void ff_rfps_calculate(AVFormatContext *ic)
3404 for (i = 0; i < ic->nb_streams; i++) {
3405 AVStream *st = ic->streams[i];
3407 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3409 // the check for tb_unreliable() is not completely correct, since this is not about handling
3410 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3411 // ipmovie.c produces.
3412 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)
3413 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);
3414 if (st->info->duration_count>1 && !st->r_frame_rate.num
3415 && tb_unreliable(st->internal->avctx)) {
3417 double best_error= 0.01;
3418 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3420 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3423 if (st->info->codec_info_duration &&
3424 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3426 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3429 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3432 for (k= 0; k<2; k++) {
3433 int n = st->info->duration_count;
3434 double a= st->info->duration_error[k][0][j] / n;
3435 double error= st->info->duration_error[k][1][j]/n - a*a;
3437 if (error < best_error && best_error> 0.000000001) {
3439 num = get_std_framerate(j);
3442 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3445 // do not increase frame rate by more than 1 % in order to match a standard rate.
3446 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3447 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3449 if ( !st->avg_frame_rate.num
3450 && st->r_frame_rate.num && st->info->rfps_duration_sum
3451 && st->info->codec_info_duration <= 0
3452 && st->info->duration_count > 2
3453 && 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
3455 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3456 st->avg_frame_rate = st->r_frame_rate;
3459 av_freep(&st->info->duration_error);
3460 st->info->last_dts = AV_NOPTS_VALUE;
3461 st->info->duration_count = 0;
3462 st->info->rfps_duration_sum = 0;
3466 static int extract_extradata_check(AVStream *st)
3468 const AVBitStreamFilter *f;
3470 f = av_bsf_get_by_name("extract_extradata");
3475 const enum AVCodecID *ids;
3476 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3477 if (*ids == st->codecpar->codec_id)
3484 static int extract_extradata_init(AVStream *st)
3486 AVStreamInternal *sti = st->internal;
3487 const AVBitStreamFilter *f;
3490 f = av_bsf_get_by_name("extract_extradata");
3494 /* check that the codec id is supported */
3495 ret = extract_extradata_check(st);
3499 sti->extract_extradata.pkt = av_packet_alloc();
3500 if (!sti->extract_extradata.pkt)
3501 return AVERROR(ENOMEM);
3503 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3507 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3512 sti->extract_extradata.bsf->time_base_in = st->time_base;
3514 ret = av_bsf_init(sti->extract_extradata.bsf);
3519 sti->extract_extradata.inited = 1;
3523 av_bsf_free(&sti->extract_extradata.bsf);
3524 av_packet_free(&sti->extract_extradata.pkt);
3528 static int extract_extradata(AVStream *st, AVPacket *pkt)
3530 AVStreamInternal *sti = st->internal;
3534 if (!sti->extract_extradata.inited) {
3535 ret = extract_extradata_init(st);
3540 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3543 pkt_ref = sti->extract_extradata.pkt;
3544 ret = av_packet_ref(pkt_ref, pkt);
3548 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3550 av_packet_unref(pkt_ref);
3554 while (ret >= 0 && !sti->avctx->extradata) {
3558 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3560 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3565 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3569 av_assert0(!sti->avctx->extradata);
3570 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3571 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3572 if (!sti->avctx->extradata) {
3573 av_packet_unref(pkt_ref);
3574 return AVERROR(ENOMEM);
3576 memcpy(sti->avctx->extradata, extradata, extradata_size);
3577 sti->avctx->extradata_size = extradata_size;
3579 av_packet_unref(pkt_ref);
3585 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3587 int i, count = 0, ret = 0, j;
3590 AVCodecContext *avctx;
3591 AVPacket pkt1, *pkt;
3592 int64_t old_offset = avio_tell(ic->pb);
3593 // new streams might appear, no options for those
3594 int orig_nb_streams = ic->nb_streams;
3596 int64_t max_analyze_duration = ic->max_analyze_duration;
3597 int64_t max_stream_analyze_duration;
3598 int64_t max_subtitle_analyze_duration;
3599 int64_t probesize = ic->probesize;
3600 int eof_reached = 0;
3601 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3603 flush_codecs = probesize > 0;
3605 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3607 max_stream_analyze_duration = max_analyze_duration;
3608 max_subtitle_analyze_duration = max_analyze_duration;
3609 if (!max_analyze_duration) {
3610 max_stream_analyze_duration =
3611 max_analyze_duration = 5*AV_TIME_BASE;
3612 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3613 if (!strcmp(ic->iformat->name, "flv"))
3614 max_stream_analyze_duration = 90*AV_TIME_BASE;
3615 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3616 max_stream_analyze_duration = 7*AV_TIME_BASE;
3620 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3621 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3623 for (i = 0; i < ic->nb_streams; i++) {
3624 const AVCodec *codec;
3625 AVDictionary *thread_opt = NULL;
3626 st = ic->streams[i];
3627 avctx = st->internal->avctx;
3629 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3630 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3631 /* if (!st->time_base.num)
3633 if (!avctx->time_base.num)
3634 avctx->time_base = st->time_base;
3637 /* check if the caller has overridden the codec id */
3638 #if FF_API_LAVF_AVCTX
3639 FF_DISABLE_DEPRECATION_WARNINGS
3640 if (st->codec->codec_id != st->internal->orig_codec_id) {
3641 st->codecpar->codec_id = st->codec->codec_id;
3642 st->codecpar->codec_type = st->codec->codec_type;
3643 st->internal->orig_codec_id = st->codec->codec_id;
3645 FF_ENABLE_DEPRECATION_WARNINGS
3647 // only for the split stuff
3648 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3649 st->parser = av_parser_init(st->codecpar->codec_id);
3651 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3652 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3653 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3654 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3656 } else if (st->need_parsing) {
3657 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3658 "%s, packets or times may be invalid.\n",
3659 avcodec_get_name(st->codecpar->codec_id));
3663 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3664 st->internal->orig_codec_id = st->codecpar->codec_id;
3666 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3668 goto find_stream_info_err;
3669 if (st->request_probe <= 0)
3670 st->internal->avctx_inited = 1;
3672 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3674 /* Force thread count to 1 since the H.264 decoder will not extract
3675 * SPS and PPS to extradata during multi-threaded decoding. */
3676 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3678 if (ic->codec_whitelist)
3679 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3681 /* Ensure that subtitle_header is properly set. */
3682 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3683 && codec && !avctx->codec) {
3684 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3685 av_log(ic, AV_LOG_WARNING,
3686 "Failed to open codec in %s\n",__FUNCTION__);
3689 // Try to just open decoders, in case this is enough to get parameters.
3690 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3691 if (codec && !avctx->codec)
3692 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3693 av_log(ic, AV_LOG_WARNING,
3694 "Failed to open codec in %s\n",__FUNCTION__);
3697 av_dict_free(&thread_opt);
3700 for (i = 0; i < ic->nb_streams; i++) {
3701 #if FF_API_R_FRAME_RATE
3702 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3704 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3705 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3710 int analyzed_all_streams;
3711 if (ff_check_interrupt(&ic->interrupt_callback)) {
3713 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3717 /* check if one codec still needs to be handled */
3718 for (i = 0; i < ic->nb_streams; i++) {
3719 int fps_analyze_framecount = 20;
3722 st = ic->streams[i];
3723 if (!has_codec_parameters(st, NULL))
3725 /* If the timebase is coarse (like the usual millisecond precision
3726 * of mkv), we need to analyze more frames to reliably arrive at
3727 * the correct fps. */
3728 if (av_q2d(st->time_base) > 0.0005)
3729 fps_analyze_framecount *= 2;
3730 if (!tb_unreliable(st->internal->avctx))
3731 fps_analyze_framecount = 0;
3732 if (ic->fps_probe_size >= 0)
3733 fps_analyze_framecount = ic->fps_probe_size;
3734 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3735 fps_analyze_framecount = 0;
3736 /* variable fps and no guess at the real fps */
3737 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3738 st->info->codec_info_duration_fields/2 :
3739 st->info->duration_count;
3740 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3741 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3742 if (count < fps_analyze_framecount)
3745 // Look at the first 3 frames if there is evidence of frame delay
3746 // but the decoder delay is not set.
3747 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3749 if (!st->internal->avctx->extradata &&
3750 (!st->internal->extract_extradata.inited ||
3751 st->internal->extract_extradata.bsf) &&
3752 extract_extradata_check(st))
3754 if (st->first_dts == AV_NOPTS_VALUE &&
3755 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3756 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3757 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3758 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3761 analyzed_all_streams = 0;
3762 if (!missing_streams || !*missing_streams)
3763 if (i == ic->nb_streams) {
3764 analyzed_all_streams = 1;
3765 /* NOTE: If the format has no header, then we need to read some
3766 * packets to get most of the streams, so we cannot stop here. */
3767 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3768 /* If we found the info for all the codecs, we can stop. */
3770 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3775 /* We did not get all the codec info, but we read too much data. */
3776 if (read_size >= probesize) {
3778 av_log(ic, AV_LOG_DEBUG,
3779 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3780 for (i = 0; i < ic->nb_streams; i++)
3781 if (!ic->streams[i]->r_frame_rate.num &&
3782 ic->streams[i]->info->duration_count <= 1 &&
3783 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3784 strcmp(ic->iformat->name, "image2"))
3785 av_log(ic, AV_LOG_WARNING,
3786 "Stream #%d: not enough frames to estimate rate; "
3787 "consider increasing probesize\n", i);
3791 /* NOTE: A new stream can be added there if no header in file
3792 * (AVFMTCTX_NOHEADER). */
3793 ret = read_frame_internal(ic, &pkt1);
3794 if (ret == AVERROR(EAGAIN))
3805 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3806 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3807 &ic->internal->packet_buffer_end,
3810 goto find_stream_info_err;
3813 st = ic->streams[pkt->stream_index];
3814 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3815 read_size += pkt->size;
3817 avctx = st->internal->avctx;
3818 if (!st->internal->avctx_inited) {
3819 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3821 goto find_stream_info_err;
3822 st->internal->avctx_inited = 1;
3825 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3826 /* check for non-increasing dts */
3827 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3828 st->info->fps_last_dts >= pkt->dts) {
3829 av_log(ic, AV_LOG_DEBUG,
3830 "Non-increasing DTS in stream %d: packet %d with DTS "
3831 "%"PRId64", packet %d with DTS %"PRId64"\n",
3832 st->index, st->info->fps_last_dts_idx,
3833 st->info->fps_last_dts, st->codec_info_nb_frames,
3835 st->info->fps_first_dts =
3836 st->info->fps_last_dts = AV_NOPTS_VALUE;
3838 /* Check for a discontinuity in dts. If the difference in dts
3839 * is more than 1000 times the average packet duration in the
3840 * sequence, we treat it as a discontinuity. */
3841 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3842 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3843 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3844 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3845 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3846 av_log(ic, AV_LOG_WARNING,
3847 "DTS discontinuity in stream %d: packet %d with DTS "
3848 "%"PRId64", packet %d with DTS %"PRId64"\n",
3849 st->index, st->info->fps_last_dts_idx,
3850 st->info->fps_last_dts, st->codec_info_nb_frames,
3852 st->info->fps_first_dts =
3853 st->info->fps_last_dts = AV_NOPTS_VALUE;
3856 /* update stored dts values */
3857 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3858 st->info->fps_first_dts = pkt->dts;
3859 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3861 st->info->fps_last_dts = pkt->dts;
3862 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3864 if (st->codec_info_nb_frames>1) {
3868 if (st->time_base.den > 0)
3869 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3870 if (st->avg_frame_rate.num > 0)
3871 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3874 && st->codec_info_nb_frames>30
3875 && st->info->fps_first_dts != AV_NOPTS_VALUE
3876 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3877 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3879 if (analyzed_all_streams) limit = max_analyze_duration;
3880 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3881 else limit = max_stream_analyze_duration;
3884 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3886 t, pkt->stream_index);
3887 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3888 av_packet_unref(pkt);
3891 if (pkt->duration) {
3892 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3893 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3895 st->info->codec_info_duration += pkt->duration;
3896 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3899 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3900 #if FF_API_R_FRAME_RATE
3901 ff_rfps_add_frame(ic, st, pkt->dts);
3903 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3904 st->info->frame_delay_evidence = 1;
3906 if (!st->internal->avctx->extradata) {
3907 ret = extract_extradata(st, pkt);
3909 goto find_stream_info_err;
3912 /* If still no information, we try to open the codec and to
3913 * decompress the frame. We try to avoid that in most cases as
3914 * it takes longer and uses more memory. For MPEG-4, we need to
3915 * decompress for QuickTime.
3917 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3918 * least one frame of codec data, this makes sure the codec initializes
3919 * the channel configuration and does not only trust the values from
3921 try_decode_frame(ic, st, pkt,
3922 (options && i < orig_nb_streams) ? &options[i] : NULL);
3924 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3925 av_packet_unref(pkt);
3927 st->codec_info_nb_frames++;
3933 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3934 st = ic->streams[stream_index];
3935 avctx = st->internal->avctx;
3936 if (!has_codec_parameters(st, NULL)) {
3937 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3938 if (codec && !avctx->codec) {
3939 AVDictionary *opts = NULL;
3940 if (ic->codec_whitelist)
3941 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3942 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3943 av_log(ic, AV_LOG_WARNING,
3944 "Failed to open codec in %s\n",__FUNCTION__);
3945 av_dict_free(&opts);
3949 // EOF already reached while reading the stream above.
3950 // So continue with reoordering DTS with whatever delay we have.
3951 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3952 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3958 AVPacket empty_pkt = { 0 };
3960 av_init_packet(&empty_pkt);
3962 for (i = 0; i < ic->nb_streams; i++) {
3964 st = ic->streams[i];
3966 /* flush the decoders */
3967 if (st->info->found_decoder == 1) {
3969 err = try_decode_frame(ic, st, &empty_pkt,
3970 (options && i < orig_nb_streams)
3971 ? &options[i] : NULL);
3972 } while (err > 0 && !has_codec_parameters(st, NULL));
3975 av_log(ic, AV_LOG_INFO,
3976 "decoding for stream %d failed\n", st->index);
3982 ff_rfps_calculate(ic);
3984 for (i = 0; i < ic->nb_streams; i++) {
3985 st = ic->streams[i];
3986 avctx = st->internal->avctx;
3987 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3988 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3989 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3990 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3991 avctx->codec_tag= tag;
3994 /* estimate average framerate if not set by demuxer */
3995 if (st->info->codec_info_duration_fields &&
3996 !st->avg_frame_rate.num &&
3997 st->info->codec_info_duration) {
3999 double best_error = 0.01;
4000 AVRational codec_frame_rate = avctx->framerate;
4002 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4003 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4004 st->info->codec_info_duration < 0)
4006 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4007 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4008 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4010 /* Round guessed framerate to a "standard" framerate if it's
4011 * within 1% of the original estimate. */
4012 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4013 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4014 double error = fabs(av_q2d(st->avg_frame_rate) /
4015 av_q2d(std_fps) - 1);
4017 if (error < best_error) {
4019 best_fps = std_fps.num;
4022 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4023 error = fabs(av_q2d(codec_frame_rate) /
4024 av_q2d(std_fps) - 1);
4025 if (error < best_error) {
4027 best_fps = std_fps.num;
4032 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4033 best_fps, 12 * 1001, INT_MAX);
4036 if (!st->r_frame_rate.num) {
4037 if ( avctx->time_base.den * (int64_t) st->time_base.num
4038 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4039 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4040 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4042 st->r_frame_rate.num = st->time_base.den;
4043 st->r_frame_rate.den = st->time_base.num;
4046 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4047 AVRational hw_ratio = { avctx->height, avctx->width };
4048 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4051 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4052 if (!avctx->bits_per_coded_sample)
4053 avctx->bits_per_coded_sample =
4054 av_get_bits_per_sample(avctx->codec_id);
4055 // set stream disposition based on audio service type
4056 switch (avctx->audio_service_type) {
4057 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4058 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4060 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4061 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4063 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4064 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4066 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4067 st->disposition = AV_DISPOSITION_COMMENT;
4069 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4070 st->disposition = AV_DISPOSITION_KARAOKE;
4077 estimate_timings(ic, old_offset);
4079 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4081 if (ret >= 0 && ic->nb_streams)
4082 /* We could not have all the codec parameters before EOF. */
4084 for (i = 0; i < ic->nb_streams; i++) {
4086 st = ic->streams[i];
4088 /* if no packet was ever seen, update context now for has_codec_parameters */
4089 if (!st->internal->avctx_inited) {
4090 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4091 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4092 st->codecpar->format = st->internal->avctx->sample_fmt;
4093 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4095 goto find_stream_info_err;
4097 if (!has_codec_parameters(st, &errmsg)) {
4099 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4100 av_log(ic, AV_LOG_WARNING,
4101 "Could not find codec parameters for stream %d (%s): %s\n"
4102 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4109 compute_chapters_end(ic);
4111 /* update the stream parameters from the internal codec contexts */
4112 for (i = 0; i < ic->nb_streams; i++) {
4113 st = ic->streams[i];
4115 if (st->internal->avctx_inited) {
4116 int orig_w = st->codecpar->width;
4117 int orig_h = st->codecpar->height;
4118 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4120 goto find_stream_info_err;
4122 // The decoder might reduce the video size by the lowres factor.
4123 if (st->internal->avctx->lowres && orig_w) {
4124 st->codecpar->width = orig_w;
4125 st->codecpar->height = orig_h;
4130 #if FF_API_LAVF_AVCTX
4131 FF_DISABLE_DEPRECATION_WARNINGS
4132 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4134 goto find_stream_info_err;
4137 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4138 // by the lowres factor.
4139 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4140 st->codec->lowres = st->internal->avctx->lowres;
4141 st->codec->width = st->internal->avctx->width;
4142 st->codec->height = st->internal->avctx->height;
4146 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4147 st->codec->time_base = st->internal->avctx->time_base;
4148 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4150 st->codec->framerate = st->avg_frame_rate;
4152 if (st->internal->avctx->subtitle_header) {
4153 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4154 if (!st->codec->subtitle_header)
4155 goto find_stream_info_err;
4156 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4157 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4158 st->codec->subtitle_header_size);
4161 // Fields unavailable in AVCodecParameters
4162 st->codec->coded_width = st->internal->avctx->coded_width;
4163 st->codec->coded_height = st->internal->avctx->coded_height;
4164 st->codec->properties = st->internal->avctx->properties;
4165 FF_ENABLE_DEPRECATION_WARNINGS
4168 st->internal->avctx_inited = 0;
4171 find_stream_info_err:
4172 for (i = 0; i < ic->nb_streams; i++) {
4173 st = ic->streams[i];
4175 av_freep(&st->info->duration_error);
4176 avcodec_close(ic->streams[i]->internal->avctx);
4177 av_freep(&ic->streams[i]->info);
4178 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4179 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4182 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4183 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4187 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4191 for (i = 0; i < ic->nb_programs; i++) {
4192 if (ic->programs[i] == last) {
4196 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4197 if (ic->programs[i]->stream_index[j] == s)
4198 return ic->programs[i];
4204 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4205 int wanted_stream_nb, int related_stream,
4206 AVCodec **decoder_ret, int flags)
4208 int i, nb_streams = ic->nb_streams;
4209 int ret = AVERROR_STREAM_NOT_FOUND;
4210 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4211 int count, multiframe, disposition;
4212 int64_t best_bitrate = -1;
4214 unsigned *program = NULL;
4215 const AVCodec *decoder = NULL, *best_decoder = NULL;
4217 if (related_stream >= 0 && wanted_stream_nb < 0) {
4218 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4220 program = p->stream_index;
4221 nb_streams = p->nb_stream_indexes;
4224 for (i = 0; i < nb_streams; i++) {
4225 int real_stream_index = program ? program[i] : i;
4226 AVStream *st = ic->streams[real_stream_index];
4227 AVCodecParameters *par = st->codecpar;
4228 if (par->codec_type != type)
4230 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4232 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4235 decoder = find_decoder(ic, st, par->codec_id);
4238 ret = AVERROR_DECODER_NOT_FOUND;
4242 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4243 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4244 count = st->codec_info_nb_frames;
4245 bitrate = par->bit_rate;
4246 multiframe = FFMIN(5, count);
4247 if ((best_disposition > disposition) ||
4248 (best_disposition == disposition && best_multiframe > multiframe) ||
4249 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4250 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4252 best_disposition = disposition;
4254 best_bitrate = bitrate;
4255 best_multiframe = multiframe;
4256 ret = real_stream_index;
4257 best_decoder = decoder;
4258 if (program && i == nb_streams - 1 && ret < 0) {
4260 nb_streams = ic->nb_streams;
4261 /* no related stream found, try again with everything */
4266 *decoder_ret = (AVCodec*)best_decoder;
4270 /*******************************************************/
4272 int av_read_play(AVFormatContext *s)
4274 if (s->iformat->read_play)
4275 return s->iformat->read_play(s);
4277 return avio_pause(s->pb, 0);
4278 return AVERROR(ENOSYS);
4281 int av_read_pause(AVFormatContext *s)
4283 if (s->iformat->read_pause)
4284 return s->iformat->read_pause(s);
4286 return avio_pause(s->pb, 1);
4287 return AVERROR(ENOSYS);
4290 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4295 dst->time_base = src->time_base;
4296 dst->nb_frames = src->nb_frames;
4297 dst->disposition = src->disposition;
4298 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4299 dst->avg_frame_rate = src->avg_frame_rate;
4300 dst->r_frame_rate = src->r_frame_rate;
4302 av_dict_free(&dst->metadata);
4303 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4307 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4311 /* Free existing side data*/
4312 for (i = 0; i < dst->nb_side_data; i++)
4313 av_free(dst->side_data[i].data);
4314 av_freep(&dst->side_data);
4315 dst->nb_side_data = 0;
4317 /* Copy side data if present */
4318 if (src->nb_side_data) {
4319 dst->side_data = av_mallocz_array(src->nb_side_data,
4320 sizeof(AVPacketSideData));
4321 if (!dst->side_data)
4322 return AVERROR(ENOMEM);
4323 dst->nb_side_data = src->nb_side_data;
4325 for (i = 0; i < src->nb_side_data; i++) {
4326 uint8_t *data = av_memdup(src->side_data[i].data,
4327 src->side_data[i].size);
4329 return AVERROR(ENOMEM);
4330 dst->side_data[i].type = src->side_data[i].type;
4331 dst->side_data[i].size = src->side_data[i].size;
4332 dst->side_data[i].data = data;
4336 #if FF_API_LAVF_FFSERVER
4337 FF_DISABLE_DEPRECATION_WARNINGS
4338 av_freep(&dst->recommended_encoder_configuration);
4339 if (src->recommended_encoder_configuration) {
4340 const char *conf_str = src->recommended_encoder_configuration;
4341 dst->recommended_encoder_configuration = av_strdup(conf_str);
4342 if (!dst->recommended_encoder_configuration)
4343 return AVERROR(ENOMEM);
4345 FF_ENABLE_DEPRECATION_WARNINGS
4351 static void free_stream(AVStream **pst)
4353 AVStream *st = *pst;
4359 for (i = 0; i < st->nb_side_data; i++)
4360 av_freep(&st->side_data[i].data);
4361 av_freep(&st->side_data);
4364 av_parser_close(st->parser);
4366 if (st->attached_pic.data)
4367 av_packet_unref(&st->attached_pic);
4370 avcodec_free_context(&st->internal->avctx);
4371 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4372 av_bsf_free(&st->internal->bsfcs[i]);
4373 av_freep(&st->internal->bsfcs);
4375 av_freep(&st->internal->priv_pts);
4376 av_bsf_free(&st->internal->extract_extradata.bsf);
4377 av_packet_free(&st->internal->extract_extradata.pkt);
4379 av_freep(&st->internal);
4381 av_dict_free(&st->metadata);
4382 avcodec_parameters_free(&st->codecpar);
4383 av_freep(&st->probe_data.buf);
4384 av_freep(&st->index_entries);
4385 #if FF_API_LAVF_AVCTX
4386 FF_DISABLE_DEPRECATION_WARNINGS
4387 avcodec_free_context(&st->codec);
4388 FF_ENABLE_DEPRECATION_WARNINGS
4390 av_freep(&st->priv_data);
4392 av_freep(&st->info->duration_error);
4393 av_freep(&st->info);
4394 #if FF_API_LAVF_FFSERVER
4395 FF_DISABLE_DEPRECATION_WARNINGS
4396 av_freep(&st->recommended_encoder_configuration);
4397 FF_ENABLE_DEPRECATION_WARNINGS
4403 void ff_free_stream(AVFormatContext *s, AVStream *st)
4405 av_assert0(s->nb_streams>0);
4406 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4408 free_stream(&s->streams[ --s->nb_streams ]);
4411 void avformat_free_context(AVFormatContext *s)
4419 if (s->iformat && s->iformat->priv_class && s->priv_data)
4420 av_opt_free(s->priv_data);
4421 if (s->oformat && s->oformat->priv_class && s->priv_data)
4422 av_opt_free(s->priv_data);
4424 for (i = s->nb_streams - 1; i >= 0; i--)
4425 ff_free_stream(s, s->streams[i]);
4428 for (i = s->nb_programs - 1; i >= 0; i--) {
4429 av_dict_free(&s->programs[i]->metadata);
4430 av_freep(&s->programs[i]->stream_index);
4431 av_freep(&s->programs[i]);
4433 av_freep(&s->programs);
4434 av_freep(&s->priv_data);
4435 while (s->nb_chapters--) {
4436 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4437 av_freep(&s->chapters[s->nb_chapters]);
4439 av_freep(&s->chapters);
4440 av_dict_free(&s->metadata);
4441 av_dict_free(&s->internal->id3v2_meta);
4442 av_freep(&s->streams);
4443 flush_packet_queue(s);
4444 av_freep(&s->internal);
4449 void avformat_close_input(AVFormatContext **ps)
4460 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4461 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4464 flush_packet_queue(s);
4467 if (s->iformat->read_close)
4468 s->iformat->read_close(s);
4470 avformat_free_context(s);
4477 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4483 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4484 if (s->max_streams < INT_MAX/sizeof(*streams))
4485 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);
4488 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4491 s->streams = streams;
4493 st = av_mallocz(sizeof(AVStream));
4496 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4500 st->info->last_dts = AV_NOPTS_VALUE;
4502 #if FF_API_LAVF_AVCTX
4503 FF_DISABLE_DEPRECATION_WARNINGS
4504 st->codec = avcodec_alloc_context3(c);
4510 FF_ENABLE_DEPRECATION_WARNINGS
4513 st->internal = av_mallocz(sizeof(*st->internal));
4517 st->codecpar = avcodec_parameters_alloc();
4521 st->internal->avctx = avcodec_alloc_context3(NULL);
4522 if (!st->internal->avctx)
4526 #if FF_API_LAVF_AVCTX
4527 FF_DISABLE_DEPRECATION_WARNINGS
4528 /* no default bitrate if decoding */
4529 st->codec->bit_rate = 0;
4530 FF_ENABLE_DEPRECATION_WARNINGS
4533 /* default pts setting is MPEG-like */
4534 avpriv_set_pts_info(st, 33, 1, 90000);
4535 /* we set the current DTS to 0 so that formats without any timestamps
4536 * but durations get some timestamps, formats with some unknown
4537 * timestamps have their first few packets buffered and the
4538 * timestamps corrected before they are returned to the user */
4539 st->cur_dts = RELATIVE_TS_BASE;
4541 st->cur_dts = AV_NOPTS_VALUE;
4544 st->index = s->nb_streams;
4545 st->start_time = AV_NOPTS_VALUE;
4546 st->duration = AV_NOPTS_VALUE;
4547 st->first_dts = AV_NOPTS_VALUE;
4548 st->probe_packets = MAX_PROBE_PACKETS;
4549 st->pts_wrap_reference = AV_NOPTS_VALUE;
4550 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4552 st->last_IP_pts = AV_NOPTS_VALUE;
4553 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4554 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4555 st->pts_buffer[i] = AV_NOPTS_VALUE;
4557 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4559 #if FF_API_R_FRAME_RATE
4560 st->info->last_dts = AV_NOPTS_VALUE;
4562 st->info->fps_first_dts = AV_NOPTS_VALUE;
4563 st->info->fps_last_dts = AV_NOPTS_VALUE;
4565 st->inject_global_side_data = s->internal->inject_global_side_data;
4567 st->internal->need_context_update = 1;
4569 s->streams[s->nb_streams++] = st;
4576 AVProgram *av_new_program(AVFormatContext *ac, int id)
4578 AVProgram *program = NULL;
4581 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4583 for (i = 0; i < ac->nb_programs; i++)
4584 if (ac->programs[i]->id == id)
4585 program = ac->programs[i];
4588 program = av_mallocz(sizeof(AVProgram));
4591 dynarray_add(&ac->programs, &ac->nb_programs, program);
4592 program->discard = AVDISCARD_NONE;
4593 program->pmt_version = -1;
4596 program->pts_wrap_reference = AV_NOPTS_VALUE;
4597 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4599 program->start_time =
4600 program->end_time = AV_NOPTS_VALUE;
4605 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4606 int64_t start, int64_t end, const char *title)
4608 AVChapter *chapter = NULL;
4611 if (end != AV_NOPTS_VALUE && start > end) {
4612 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4616 for (i = 0; i < s->nb_chapters; i++)
4617 if (s->chapters[i]->id == id)
4618 chapter = s->chapters[i];
4621 chapter = av_mallocz(sizeof(AVChapter));
4624 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4626 av_dict_set(&chapter->metadata, "title", title, 0);
4628 chapter->time_base = time_base;
4629 chapter->start = start;
4635 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4638 AVProgram *program = NULL;
4641 if (idx >= ac->nb_streams) {
4642 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4646 for (i = 0; i < ac->nb_programs; i++) {
4647 if (ac->programs[i]->id != progid)
4649 program = ac->programs[i];
4650 for (j = 0; j < program->nb_stream_indexes; j++)
4651 if (program->stream_index[j] == idx)
4654 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4657 program->stream_index = tmp;
4658 program->stream_index[program->nb_stream_indexes++] = idx;
4663 uint64_t ff_ntp_time(void)
4665 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4668 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4670 uint64_t ntp_ts, frac_part, sec;
4673 //current ntp time in seconds and micro seconds
4674 sec = ntp_time_us / 1000000;
4675 usec = ntp_time_us % 1000000;
4677 //encoding in ntp timestamp format
4678 frac_part = usec * 0xFFFFFFFFULL;
4679 frac_part /= 1000000;
4681 if (sec > 0xFFFFFFFFULL)
4682 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4685 ntp_ts |= frac_part;
4690 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4693 char *q, buf1[20], c;
4694 int nd, len, percentd_found;
4706 while (av_isdigit(*p))
4707 nd = nd * 10 + *p++ - '0';
4709 } while (av_isdigit(c));
4715 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4720 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4722 if ((q - buf + len) > buf_size - 1)
4724 memcpy(q, buf1, len);
4732 if ((q - buf) < buf_size - 1)
4736 if (!percentd_found)
4745 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4747 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4750 void av_url_split(char *proto, int proto_size,
4751 char *authorization, int authorization_size,
4752 char *hostname, int hostname_size,
4753 int *port_ptr, char *path, int path_size, const char *url)
4755 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4761 if (authorization_size > 0)
4762 authorization[0] = 0;
4763 if (hostname_size > 0)
4768 /* parse protocol */
4769 if ((p = strchr(url, ':'))) {
4770 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4777 /* no protocol means plain filename */
4778 av_strlcpy(path, url, path_size);
4782 /* separate path from hostname */
4783 ls = strchr(p, '/');
4784 ls2 = strchr(p, '?');
4788 ls = FFMIN(ls, ls2);
4790 av_strlcpy(path, ls, path_size);
4792 ls = &p[strlen(p)]; // XXX
4794 /* the rest is hostname, use that to parse auth/port */
4796 /* authorization (user[:pass]@hostname) */
4798 while ((at = strchr(p, '@')) && at < ls) {
4799 av_strlcpy(authorization, at2,
4800 FFMIN(authorization_size, at + 1 - at2));
4801 p = at + 1; /* skip '@' */
4804 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4806 av_strlcpy(hostname, p + 1,
4807 FFMIN(hostname_size, brk - p));
4808 if (brk[1] == ':' && port_ptr)
4809 *port_ptr = atoi(brk + 2);
4810 } else if ((col = strchr(p, ':')) && col < ls) {
4811 av_strlcpy(hostname, p,
4812 FFMIN(col + 1 - p, hostname_size));
4814 *port_ptr = atoi(col + 1);
4816 av_strlcpy(hostname, p,
4817 FFMIN(ls + 1 - p, hostname_size));
4821 int ff_mkdir_p(const char *path)
4824 char *temp = av_strdup(path);
4828 if (!path || !temp) {
4832 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4834 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4838 for ( ; *pos != '\0'; ++pos) {
4839 if (*pos == '/' || *pos == '\\') {
4842 ret = mkdir(temp, 0755);
4847 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4848 ret = mkdir(temp, 0755);
4855 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4858 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4861 'C', 'D', 'E', 'F' };
4862 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4865 'c', 'd', 'e', 'f' };
4866 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4868 for (i = 0; i < s; i++) {
4869 buff[i * 2] = hex_table[src[i] >> 4];
4870 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4876 int ff_hex_to_data(uint8_t *data, const char *p)
4883 p += strspn(p, SPACE_CHARS);
4886 c = av_toupper((unsigned char) *p++);
4887 if (c >= '0' && c <= '9')
4889 else if (c >= 'A' && c <= 'F')
4904 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4905 unsigned int pts_num, unsigned int pts_den)
4908 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4909 if (new_tb.num != pts_num)
4910 av_log(NULL, AV_LOG_DEBUG,
4911 "st:%d removing common factor %d from timebase\n",
4912 s->index, pts_num / new_tb.num);
4914 av_log(NULL, AV_LOG_WARNING,
4915 "st:%d has too large timebase, reducing\n", s->index);
4917 if (new_tb.num <= 0 || new_tb.den <= 0) {
4918 av_log(NULL, AV_LOG_ERROR,
4919 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4920 new_tb.num, new_tb.den,
4924 s->time_base = new_tb;
4925 #if FF_API_LAVF_AVCTX
4926 FF_DISABLE_DEPRECATION_WARNINGS
4927 s->codec->pkt_timebase = new_tb;
4928 FF_ENABLE_DEPRECATION_WARNINGS
4930 s->internal->avctx->pkt_timebase = new_tb;
4931 s->pts_wrap_bits = pts_wrap_bits;
4934 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4937 const char *ptr = str;
4939 /* Parse key=value pairs. */
4942 char *dest = NULL, *dest_end;
4943 int key_len, dest_len = 0;
4945 /* Skip whitespace and potential commas. */
4946 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4953 if (!(ptr = strchr(key, '=')))
4956 key_len = ptr - key;
4958 callback_get_buf(context, key, key_len, &dest, &dest_len);
4959 dest_end = dest + dest_len - 1;
4963 while (*ptr && *ptr != '\"') {
4967 if (dest && dest < dest_end)
4971 if (dest && dest < dest_end)
4979 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4980 if (dest && dest < dest_end)
4988 int ff_find_stream_index(AVFormatContext *s, int id)
4991 for (i = 0; i < s->nb_streams; i++)
4992 if (s->streams[i]->id == id)
4997 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
5001 unsigned int codec_tag;
5002 if (ofmt->query_codec)
5003 return ofmt->query_codec(codec_id, std_compliance);
5004 else if (ofmt->codec_tag)
5005 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
5006 else if (codec_id == ofmt->video_codec ||
5007 codec_id == ofmt->audio_codec ||
5008 codec_id == ofmt->subtitle_codec ||
5009 codec_id == ofmt->data_codec)
5012 return AVERROR_PATCHWELCOME;
5015 int avformat_network_init(void)
5019 if ((ret = ff_network_init()) < 0)
5021 if ((ret = ff_tls_init()) < 0)
5027 int avformat_network_deinit(void)
5036 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5037 uint64_t channel_layout, int32_t sample_rate,
5038 int32_t width, int32_t height)
5044 return AVERROR(EINVAL);
5047 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5049 if (channel_layout) {
5051 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5055 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5057 if (width || height) {
5059 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5061 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5063 return AVERROR(ENOMEM);
5064 bytestream_put_le32(&data, flags);
5066 bytestream_put_le32(&data, channels);
5068 bytestream_put_le64(&data, channel_layout);
5070 bytestream_put_le32(&data, sample_rate);
5071 if (width || height) {
5072 bytestream_put_le32(&data, width);
5073 bytestream_put_le32(&data, height);
5078 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5080 AVRational undef = {0, 1};
5081 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5082 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5083 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5085 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5086 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5087 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5088 stream_sample_aspect_ratio = undef;
5090 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5091 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5092 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5093 frame_sample_aspect_ratio = undef;
5095 if (stream_sample_aspect_ratio.num)
5096 return stream_sample_aspect_ratio;
5098 return frame_sample_aspect_ratio;
5101 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5103 AVRational fr = st->r_frame_rate;
5104 AVRational codec_fr = st->internal->avctx->framerate;
5105 AVRational avg_fr = st->avg_frame_rate;
5107 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5108 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5113 if (st->internal->avctx->ticks_per_frame > 1) {
5114 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5115 (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))
5123 * Matches a stream specifier (but ignores requested index).
5125 * @param indexptr set to point to the requested stream index if there is one
5127 * @return <0 on error
5128 * 0 if st is NOT a matching stream
5129 * >0 if st is a matching stream
5131 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5132 const char *spec, const char **indexptr, AVProgram **p)
5134 int match = 1; /* Stores if the specifier matches so far. */
5136 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5140 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5141 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5142 enum AVMediaType type;
5146 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5147 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5148 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5149 case 'd': type = AVMEDIA_TYPE_DATA; break;
5150 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5151 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5152 default: av_assert0(0);
5154 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5155 return AVERROR(EINVAL);
5157 #if FF_API_LAVF_AVCTX
5158 FF_DISABLE_DEPRECATION_WARNINGS
5159 if (type != st->codecpar->codec_type
5160 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5162 FF_ENABLE_DEPRECATION_WARNINGS
5164 if (type != st->codecpar->codec_type)
5167 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5169 } else if (*spec == 'p' && *(spec + 1) == ':') {
5174 prog_id = strtol(spec, &endptr, 0);
5175 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5176 if (spec == endptr || (*endptr && *endptr++ != ':'))
5177 return AVERROR(EINVAL);
5180 for (i = 0; i < s->nb_programs; i++) {
5181 if (s->programs[i]->id != prog_id)
5184 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5185 if (st->index == s->programs[i]->stream_index[j]) {
5188 *p = s->programs[i];
5197 } else if (*spec == '#' ||
5198 (*spec == 'i' && *(spec + 1) == ':')) {
5201 spec += 1 + (*spec == 'i');
5202 stream_id = strtol(spec, &endptr, 0);
5203 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5204 return AVERROR(EINVAL);
5205 return match && (stream_id == st->id);
5206 } else if (*spec == 'm' && *(spec + 1) == ':') {
5207 AVDictionaryEntry *tag;
5213 val = strchr(spec, ':');
5215 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5217 return AVERROR(ENOMEM);
5219 tag = av_dict_get(st->metadata, key, NULL, 0);
5221 if (!val || !strcmp(tag->value, val + 1))
5230 return match && ret;
5231 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5232 AVCodecParameters *par = st->codecpar;
5233 #if FF_API_LAVF_AVCTX
5234 FF_DISABLE_DEPRECATION_WARNINGS
5235 AVCodecContext *codec = st->codec;
5236 FF_ENABLE_DEPRECATION_WARNINGS
5239 switch (par->codec_type) {
5240 case AVMEDIA_TYPE_AUDIO:
5241 val = par->sample_rate && par->channels;
5242 #if FF_API_LAVF_AVCTX
5243 val = val || (codec->sample_rate && codec->channels);
5245 if (par->format == AV_SAMPLE_FMT_NONE
5246 #if FF_API_LAVF_AVCTX
5247 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5252 case AVMEDIA_TYPE_VIDEO:
5253 val = par->width && par->height;
5254 #if FF_API_LAVF_AVCTX
5255 val = val || (codec->width && codec->height);
5257 if (par->format == AV_PIX_FMT_NONE
5258 #if FF_API_LAVF_AVCTX
5259 && codec->pix_fmt == AV_PIX_FMT_NONE
5264 case AVMEDIA_TYPE_UNKNOWN:
5271 #if FF_API_LAVF_AVCTX
5272 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5274 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5277 return AVERROR(EINVAL);
5285 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5290 const char *indexptr = NULL;
5291 AVProgram *p = NULL;
5294 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5301 index = strtol(indexptr, &endptr, 0);
5302 if (*endptr) { /* We can't have anything after the requested index. */
5303 ret = AVERROR(EINVAL);
5307 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5308 if (spec == indexptr)
5309 return (index == st->index);
5311 /* If we requested a matching stream index, we have to ensure st is that. */
5312 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5313 for (int i = 0; i < nb_streams && index >= 0; i++) {
5314 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5315 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5318 if (ret > 0 && index-- == 0 && st == candidate)
5324 if (ret == AVERROR(EINVAL))
5325 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5329 int ff_generate_avci_extradata(AVStream *st)
5331 static const uint8_t avci100_1080p_extradata[] = {
5333 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5334 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5335 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5336 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5337 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5338 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5339 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5340 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5341 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5343 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5346 static const uint8_t avci100_1080i_extradata[] = {
5348 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5349 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5350 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5351 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5352 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5353 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5354 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5355 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5356 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5357 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5358 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5360 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5363 static const uint8_t avci50_1080p_extradata[] = {
5365 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5366 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5367 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5368 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5369 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5370 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5371 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5372 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5373 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5375 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5378 static const uint8_t avci50_1080i_extradata[] = {
5380 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5381 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5382 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5383 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5384 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5385 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5386 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5387 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5388 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5389 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5390 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5392 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5395 static const uint8_t avci100_720p_extradata[] = {
5397 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5398 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5399 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5400 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5401 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5402 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5403 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5404 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5405 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5406 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5408 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5411 static const uint8_t avci50_720p_extradata[] = {
5413 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5414 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5415 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5416 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5417 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5418 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5419 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5420 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5421 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5423 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5427 const uint8_t *data = NULL;
5430 if (st->codecpar->width == 1920) {
5431 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5432 data = avci100_1080p_extradata;
5433 size = sizeof(avci100_1080p_extradata);
5435 data = avci100_1080i_extradata;
5436 size = sizeof(avci100_1080i_extradata);
5438 } else if (st->codecpar->width == 1440) {
5439 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5440 data = avci50_1080p_extradata;
5441 size = sizeof(avci50_1080p_extradata);
5443 data = avci50_1080i_extradata;
5444 size = sizeof(avci50_1080i_extradata);
5446 } else if (st->codecpar->width == 1280) {
5447 data = avci100_720p_extradata;
5448 size = sizeof(avci100_720p_extradata);
5449 } else if (st->codecpar->width == 960) {
5450 data = avci50_720p_extradata;
5451 size = sizeof(avci50_720p_extradata);
5457 av_freep(&st->codecpar->extradata);
5458 if (ff_alloc_extradata(st->codecpar, size))
5459 return AVERROR(ENOMEM);
5460 memcpy(st->codecpar->extradata, data, size);
5465 uint8_t *av_stream_get_side_data(const AVStream *st,
5466 enum AVPacketSideDataType type, int *size)
5470 for (i = 0; i < st->nb_side_data; i++) {
5471 if (st->side_data[i].type == type) {
5473 *size = st->side_data[i].size;
5474 return st->side_data[i].data;
5480 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5481 uint8_t *data, size_t size)
5483 AVPacketSideData *sd, *tmp;
5486 for (i = 0; i < st->nb_side_data; i++) {
5487 sd = &st->side_data[i];
5489 if (sd->type == type) {
5490 av_freep(&sd->data);
5497 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5498 return AVERROR(ERANGE);
5500 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5502 return AVERROR(ENOMEM);
5505 st->side_data = tmp;
5508 sd = &st->side_data[st->nb_side_data - 1];
5516 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5520 uint8_t *data = av_malloc(size);
5525 ret = av_stream_add_side_data(st, type, data, size);
5534 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5537 const AVBitStreamFilter *bsf;
5539 AVCodecParameters *in_par;
5541 if (!(bsf = av_bsf_get_by_name(name))) {
5542 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5543 return AVERROR_BSF_NOT_FOUND;
5546 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5549 if (st->internal->nb_bsfcs) {
5550 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5551 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5553 in_par = st->codecpar;
5554 bsfc->time_base_in = st->time_base;
5557 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5562 if (args && bsfc->filter->priv_class) {
5563 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5564 const char * shorthand[2] = {NULL};
5567 shorthand[0] = opt->name;
5569 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5575 if ((ret = av_bsf_init(bsfc)) < 0) {
5580 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5585 av_log(NULL, AV_LOG_VERBOSE,
5586 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5587 name, args ? args : "");
5592 FF_DISABLE_DEPRECATION_WARNINGS
5593 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5594 AVBitStreamFilterContext *bsfc)
5598 AVPacket new_pkt = *pkt;
5599 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5600 &new_pkt.data, &new_pkt.size,
5601 pkt->data, pkt->size,
5602 pkt->flags & AV_PKT_FLAG_KEY);
5603 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5604 av_packet_unref(pkt);
5605 memset(pkt, 0, sizeof(*pkt));
5608 if(a == 0 && new_pkt.data != pkt->data) {
5609 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
5611 memcpy(t, new_pkt.data, new_pkt.size);
5612 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5617 a = AVERROR(ENOMEM);
5621 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5622 av_buffer_default_free, NULL, 0);
5624 pkt->side_data = NULL;
5625 pkt->side_data_elems = 0;
5626 av_packet_unref(pkt);
5628 av_freep(&new_pkt.data);
5629 a = AVERROR(ENOMEM);
5633 av_log(codec, AV_LOG_ERROR,
5634 "Failed to open bitstream filter %s for stream %d with codec %s",
5635 bsfc->filter->name, pkt->stream_index,
5636 codec->codec ? codec->codec->name : "copy");
5646 FF_ENABLE_DEPRECATION_WARNINGS
5649 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5652 return AVERROR(EINVAL);
5654 if (!(s->oformat->flags & AVFMT_NOFILE))
5655 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5659 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5662 s->io_close(s, *pb);
5666 int ff_is_http_proto(char *filename) {
5667 const char *proto = avio_find_protocol_name(filename);
5668 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5671 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5673 AVDictionaryEntry *entry;
5674 int64_t parsed_timestamp;
5676 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5677 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5678 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5681 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5688 int ff_standardize_creation_time(AVFormatContext *s)
5691 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5693 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5697 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5702 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5704 if (size != AVPALETTE_SIZE) {
5705 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5706 return AVERROR_INVALIDDATA;
5708 memcpy(palette, side_data, AVPALETTE_SIZE);
5712 if (ret == CONTAINS_PAL) {
5714 for (i = 0; i < AVPALETTE_COUNT; i++)
5715 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5722 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5727 ret = av_bprint_finalize(buf, &str);
5730 if (!av_bprint_is_complete(buf)) {
5732 return AVERROR(ENOMEM);
5735 par->extradata = str;
5736 /* Note: the string is NUL terminated (so extradata can be read as a
5737 * string), but the ending character is not accounted in the size (in
5738 * binary formats you are likely not supposed to mux that character). When
5739 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5741 par->extradata_size = buf->len;
5745 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5746 AVStream *ost, const AVStream *ist,
5747 enum AVTimebaseSource copy_tb)
5749 //TODO: use [io]st->internal->avctx
5750 const AVCodecContext *dec_ctx = ist->codec;
5751 AVCodecContext *enc_ctx = ost->codec;
5753 enc_ctx->time_base = ist->time_base;
5755 * Avi is a special case here because it supports variable fps but
5756 * having the fps and timebase differe significantly adds quite some
5759 if (!strcmp(ofmt->name, "avi")) {
5760 #if FF_API_R_FRAME_RATE
5761 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5762 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5763 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5764 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5765 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5766 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5767 enc_ctx->time_base.num = ist->r_frame_rate.den;
5768 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5769 enc_ctx->ticks_per_frame = 2;
5772 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5773 && av_q2d(ist->time_base) < 1.0/500
5774 || copy_tb == AVFMT_TBCF_DECODER) {
5775 enc_ctx->time_base = dec_ctx->time_base;
5776 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5777 enc_ctx->time_base.den *= 2;
5778 enc_ctx->ticks_per_frame = 2;
5780 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5781 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5782 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5783 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5784 && av_q2d(ist->time_base) < 1.0/500
5785 || copy_tb == AVFMT_TBCF_DECODER) {
5786 enc_ctx->time_base = dec_ctx->time_base;
5787 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5791 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5792 && dec_ctx->time_base.num < dec_ctx->time_base.den
5793 && dec_ctx->time_base.num > 0
5794 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5795 enc_ctx->time_base = dec_ctx->time_base;
5798 if (ost->avg_frame_rate.num)
5799 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5801 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5802 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5807 AVRational av_stream_get_codec_timebase(const AVStream *st)
5809 // See avformat_transfer_internal_stream_timing_info() TODO.
5810 #if FF_API_LAVF_AVCTX
5811 FF_DISABLE_DEPRECATION_WARNINGS
5812 return st->codec->time_base;
5813 FF_ENABLE_DEPRECATION_WARNINGS
5815 return st->internal->avctx->time_base;
5819 void ff_format_set_url(AVFormatContext *s, char *url)
5824 #if FF_API_FORMAT_FILENAME
5825 FF_DISABLE_DEPRECATION_WARNINGS
5826 av_strlcpy(s->filename, url, sizeof(s->filename));
5827 FF_ENABLE_DEPRECATION_WARNINGS