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 /* Some demuxers return FFERROR_REDO when they consume
858 data and discard it (ignored streams, junk, extradata).
859 We must re-call the demuxer to get the real packet. */
860 if (ret == FFERROR_REDO)
862 if (!pktl || ret == AVERROR(EAGAIN))
864 for (i = 0; i < s->nb_streams; i++) {
866 if (st->probe_packets || st->request_probe > 0)
867 if ((err = probe_codec(s, st, NULL)) < 0)
869 av_assert0(st->request_probe <= 0);
874 err = av_packet_make_refcounted(pkt);
878 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
879 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
880 av_log(s, AV_LOG_WARNING,
881 "Dropped corrupted packet (stream = %d)\n",
883 av_packet_unref(pkt);
887 if (pkt->stream_index >= (unsigned)s->nb_streams) {
888 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
892 st = s->streams[pkt->stream_index];
894 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
895 // correct first time stamps to negative values
896 if (!is_relative(st->first_dts))
897 st->first_dts = wrap_timestamp(st, st->first_dts);
898 if (!is_relative(st->start_time))
899 st->start_time = wrap_timestamp(st, st->start_time);
900 if (!is_relative(st->cur_dts))
901 st->cur_dts = wrap_timestamp(st, st->cur_dts);
904 pkt->dts = wrap_timestamp(st, pkt->dts);
905 pkt->pts = wrap_timestamp(st, pkt->pts);
907 force_codec_ids(s, st);
909 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
910 if (s->use_wallclock_as_timestamps)
911 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
913 if (!pktl && st->request_probe <= 0)
916 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
917 &s->internal->raw_packet_buffer_end,
921 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
923 if ((err = probe_codec(s, st, pkt)) < 0)
929 /**********************************************************/
931 static int determinable_frame_size(AVCodecContext *avctx)
933 switch(avctx->codec_id) {
934 case AV_CODEC_ID_MP1:
935 case AV_CODEC_ID_MP2:
936 case AV_CODEC_ID_MP3:
937 case AV_CODEC_ID_CODEC2:
945 * Return the frame duration in seconds. Return 0 if not available.
947 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
948 AVCodecParserContext *pc, AVPacket *pkt)
950 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
951 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
952 int frame_size, sample_rate;
954 #if FF_API_LAVF_AVCTX
955 FF_DISABLE_DEPRECATION_WARNINGS
956 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
957 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
958 FF_ENABLE_DEPRECATION_WARNINGS
963 switch (st->codecpar->codec_type) {
964 case AVMEDIA_TYPE_VIDEO:
965 if (st->r_frame_rate.num && !pc && s->iformat) {
966 *pnum = st->r_frame_rate.den;
967 *pden = st->r_frame_rate.num;
968 } else if (st->time_base.num * 1000LL > st->time_base.den) {
969 *pnum = st->time_base.num;
970 *pden = st->time_base.den;
971 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
972 av_assert0(st->internal->avctx->ticks_per_frame);
973 av_reduce(pnum, pden,
975 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
978 if (pc && pc->repeat_pict) {
979 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
980 av_reduce(pnum, pden,
981 (*pnum) * (1LL + pc->repeat_pict),
985 /* If this codec can be interlaced or progressive then we need
986 * a parser to compute duration of a packet. Thus if we have
987 * no parser in such case leave duration undefined. */
988 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
992 case AVMEDIA_TYPE_AUDIO:
993 if (st->internal->avctx_inited) {
994 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
995 sample_rate = st->internal->avctx->sample_rate;
997 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
998 sample_rate = st->codecpar->sample_rate;
1000 if (frame_size <= 0 || sample_rate <= 0)
1003 *pden = sample_rate;
1010 static int is_intra_only(enum AVCodecID id)
1012 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1015 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1020 static int has_decode_delay_been_guessed(AVStream *st)
1022 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1023 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1025 #if CONFIG_H264_DECODER
1026 if (st->internal->avctx->has_b_frames &&
1027 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1030 if (st->internal->avctx->has_b_frames<3)
1031 return st->nb_decoded_frames >= 7;
1032 else if (st->internal->avctx->has_b_frames<4)
1033 return st->nb_decoded_frames >= 18;
1035 return st->nb_decoded_frames >= 20;
1038 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1042 if (pktl == s->internal->packet_buffer_end)
1043 return s->internal->parse_queue;
1047 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1048 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1049 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1052 int delay = st->internal->avctx->has_b_frames;
1055 if (dts == AV_NOPTS_VALUE) {
1056 int64_t best_score = INT64_MAX;
1057 for (i = 0; i<delay; i++) {
1058 if (st->pts_reorder_error_count[i]) {
1059 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1060 if (score < best_score) {
1062 dts = pts_buffer[i];
1067 for (i = 0; i<delay; i++) {
1068 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1069 int64_t diff = FFABS(pts_buffer[i] - dts)
1070 + (uint64_t)st->pts_reorder_error[i];
1071 diff = FFMAX(diff, st->pts_reorder_error[i]);
1072 st->pts_reorder_error[i] = diff;
1073 st->pts_reorder_error_count[i]++;
1074 if (st->pts_reorder_error_count[i] > 250) {
1075 st->pts_reorder_error[i] >>= 1;
1076 st->pts_reorder_error_count[i] >>= 1;
1083 if (dts == AV_NOPTS_VALUE)
1084 dts = pts_buffer[0];
1090 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1091 * of the packets in a window.
1093 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1094 AVPacketList *pkt_buffer)
1096 AVStream *st = s->streams[stream_index];
1097 int delay = st->internal->avctx->has_b_frames;
1100 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1102 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1103 pts_buffer[i] = AV_NOPTS_VALUE;
1105 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1106 if (pkt_buffer->pkt.stream_index != stream_index)
1109 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1110 pts_buffer[0] = pkt_buffer->pkt.pts;
1111 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1112 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1114 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1119 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1120 int64_t dts, int64_t pts, AVPacket *pkt)
1122 AVStream *st = s->streams[stream_index];
1123 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1124 AVPacketList *pktl_it;
1128 if (st->first_dts != AV_NOPTS_VALUE ||
1129 dts == AV_NOPTS_VALUE ||
1130 st->cur_dts == AV_NOPTS_VALUE ||
1131 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1135 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1137 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1139 if (is_relative(pts))
1142 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1143 if (pktl_it->pkt.stream_index != stream_index)
1145 if (is_relative(pktl_it->pkt.pts))
1146 pktl_it->pkt.pts += shift;
1148 if (is_relative(pktl_it->pkt.dts))
1149 pktl_it->pkt.dts += shift;
1151 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1152 st->start_time = pktl_it->pkt.pts;
1153 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1154 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1158 if (has_decode_delay_been_guessed(st)) {
1159 update_dts_from_pts(s, stream_index, pktl);
1162 if (st->start_time == AV_NOPTS_VALUE) {
1163 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1164 st->start_time = pts;
1166 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1167 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1171 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1172 int stream_index, int duration)
1174 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1175 int64_t cur_dts = RELATIVE_TS_BASE;
1177 if (st->first_dts != AV_NOPTS_VALUE) {
1178 if (st->update_initial_durations_done)
1180 st->update_initial_durations_done = 1;
1181 cur_dts = st->first_dts;
1182 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1183 if (pktl->pkt.stream_index == stream_index) {
1184 if (pktl->pkt.pts != pktl->pkt.dts ||
1185 pktl->pkt.dts != AV_NOPTS_VALUE ||
1188 cur_dts -= duration;
1191 if (pktl && pktl->pkt.dts != st->first_dts) {
1192 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1193 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1197 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1200 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1201 st->first_dts = cur_dts;
1202 } else if (st->cur_dts != RELATIVE_TS_BASE)
1205 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1206 if (pktl->pkt.stream_index != stream_index)
1208 if ((pktl->pkt.pts == pktl->pkt.dts ||
1209 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1210 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1211 pktl->pkt.dts == st->first_dts ||
1212 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1213 !pktl->pkt.duration) {
1214 pktl->pkt.dts = cur_dts;
1215 if (!st->internal->avctx->has_b_frames)
1216 pktl->pkt.pts = cur_dts;
1217 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1218 pktl->pkt.duration = duration;
1221 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1224 st->cur_dts = cur_dts;
1227 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1228 AVCodecParserContext *pc, AVPacket *pkt,
1229 int64_t next_dts, int64_t next_pts)
1231 int num, den, presentation_delayed, delay, i;
1233 AVRational duration;
1234 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1235 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1237 if (s->flags & AVFMT_FLAG_NOFILLIN)
1240 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1241 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1242 if (st->last_dts_for_order_check <= pkt->dts) {
1245 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1246 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1248 st->last_dts_for_order_check);
1249 st->dts_misordered++;
1251 if (st->dts_ordered + st->dts_misordered > 250) {
1252 st->dts_ordered >>= 1;
1253 st->dts_misordered >>= 1;
1257 st->last_dts_for_order_check = pkt->dts;
1258 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1259 pkt->dts = AV_NOPTS_VALUE;
1262 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1263 pkt->dts = AV_NOPTS_VALUE;
1265 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1266 && !st->internal->avctx->has_b_frames)
1267 //FIXME Set low_delay = 0 when has_b_frames = 1
1268 st->internal->avctx->has_b_frames = 1;
1270 /* do we have a video B-frame ? */
1271 delay = st->internal->avctx->has_b_frames;
1272 presentation_delayed = 0;
1274 /* XXX: need has_b_frame, but cannot get it if the codec is
1275 * not initialized */
1277 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1278 presentation_delayed = 1;
1280 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1281 st->pts_wrap_bits < 63 &&
1282 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1283 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1284 pkt->dts -= 1LL << st->pts_wrap_bits;
1286 pkt->pts += 1LL << st->pts_wrap_bits;
1289 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1290 * We take the conservative approach and discard both.
1291 * Note: If this is misbehaving for an H.264 file, then possibly
1292 * presentation_delayed is not set correctly. */
1293 if (delay == 1 && pkt->dts == pkt->pts &&
1294 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1295 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1296 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1297 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1298 pkt->dts = AV_NOPTS_VALUE;
1301 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1302 if (pkt->duration <= 0) {
1303 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1305 duration = (AVRational) {num, den};
1306 pkt->duration = av_rescale_rnd(1,
1307 num * (int64_t) st->time_base.den,
1308 den * (int64_t) st->time_base.num,
1313 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1314 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1316 /* Correct timestamps with byte offset if demuxers only have timestamps
1317 * on packet boundaries */
1318 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1319 /* this will estimate bitrate based on this frame's duration and size */
1320 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1321 if (pkt->pts != AV_NOPTS_VALUE)
1323 if (pkt->dts != AV_NOPTS_VALUE)
1327 /* This may be redundant, but it should not hurt. */
1328 if (pkt->dts != AV_NOPTS_VALUE &&
1329 pkt->pts != AV_NOPTS_VALUE &&
1330 pkt->pts > pkt->dts)
1331 presentation_delayed = 1;
1333 if (s->debug & FF_FDEBUG_TS)
1334 av_log(s, AV_LOG_DEBUG,
1335 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1336 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1337 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1339 /* Interpolate PTS and DTS if they are not present. We skip H264
1340 * currently because delay and has_b_frames are not reliably set. */
1341 if ((delay == 0 || (delay == 1 && pc)) &&
1343 if (presentation_delayed) {
1344 /* DTS = decompression timestamp */
1345 /* PTS = presentation timestamp */
1346 if (pkt->dts == AV_NOPTS_VALUE)
1347 pkt->dts = st->last_IP_pts;
1348 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1349 if (pkt->dts == AV_NOPTS_VALUE)
1350 pkt->dts = st->cur_dts;
1352 /* This is tricky: the dts must be incremented by the duration
1353 * of the frame we are displaying, i.e. the last I- or P-frame. */
1354 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1355 st->last_IP_duration = pkt->duration;
1356 if (pkt->dts != AV_NOPTS_VALUE)
1357 st->cur_dts = pkt->dts + st->last_IP_duration;
1358 if (pkt->dts != AV_NOPTS_VALUE &&
1359 pkt->pts == AV_NOPTS_VALUE &&
1360 st->last_IP_duration > 0 &&
1361 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1362 next_dts != next_pts &&
1363 next_pts != AV_NOPTS_VALUE)
1364 pkt->pts = next_dts;
1366 if ((uint64_t)pkt->duration <= INT32_MAX)
1367 st->last_IP_duration = pkt->duration;
1368 st->last_IP_pts = pkt->pts;
1369 /* Cannot compute PTS if not present (we can compute it only
1370 * by knowing the future. */
1371 } else if (pkt->pts != AV_NOPTS_VALUE ||
1372 pkt->dts != AV_NOPTS_VALUE ||
1373 pkt->duration > 0 ) {
1375 /* presentation is not delayed : PTS and DTS are the same */
1376 if (pkt->pts == AV_NOPTS_VALUE)
1377 pkt->pts = pkt->dts;
1378 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1380 if (pkt->pts == AV_NOPTS_VALUE)
1381 pkt->pts = st->cur_dts;
1382 pkt->dts = pkt->pts;
1383 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1384 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1388 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1389 st->pts_buffer[0] = pkt->pts;
1390 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1391 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1393 if(has_decode_delay_been_guessed(st))
1394 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1396 // We skipped it above so we try here.
1398 // This should happen on the first packet
1399 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1400 if (pkt->dts > st->cur_dts)
1401 st->cur_dts = pkt->dts;
1403 if (s->debug & FF_FDEBUG_TS)
1404 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1405 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1408 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1409 pkt->flags |= AV_PKT_FLAG_KEY;
1410 #if FF_API_CONVERGENCE_DURATION
1411 FF_DISABLE_DEPRECATION_WARNINGS
1413 pkt->convergence_duration = pc->convergence_duration;
1414 FF_ENABLE_DEPRECATION_WARNINGS
1418 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1420 AVPacketList *tmp = *pkt_buf;
1423 AVPacketList *pktl = tmp;
1425 av_packet_unref(&pktl->pkt);
1429 *pkt_buf_end = NULL;
1433 * Parse a packet, add all split parts to parse_queue.
1435 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1437 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1439 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1440 AVStream *st = s->streams[stream_index];
1441 uint8_t *data = pkt ? pkt->data : NULL;
1442 int size = pkt ? pkt->size : 0;
1443 int ret = 0, got_output = 0;
1446 av_init_packet(&flush_pkt);
1449 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1450 // preserve 0-size sync packets
1451 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1454 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1456 int64_t next_pts = pkt->pts;
1457 int64_t next_dts = pkt->dts;
1459 av_init_packet(&out_pkt);
1460 len = av_parser_parse2(st->parser, st->internal->avctx,
1461 &out_pkt.data, &out_pkt.size, data, size,
1462 pkt->pts, pkt->dts, pkt->pos);
1464 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1466 /* increment read pointer */
1470 got_output = !!out_pkt.size;
1475 if (pkt->buf && out_pkt.data == pkt->data) {
1476 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1477 * to data in it and not in the parser's internal buffer. */
1478 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1479 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1480 out_pkt.buf = av_buffer_ref(pkt->buf);
1482 ret = AVERROR(ENOMEM);
1486 ret = av_packet_make_refcounted(&out_pkt);
1491 if (pkt->side_data) {
1492 out_pkt.side_data = pkt->side_data;
1493 out_pkt.side_data_elems = pkt->side_data_elems;
1494 pkt->side_data = NULL;
1495 pkt->side_data_elems = 0;
1498 /* set the duration */
1499 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1500 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1501 if (st->internal->avctx->sample_rate > 0) {
1503 av_rescale_q_rnd(st->parser->duration,
1504 (AVRational) { 1, st->internal->avctx->sample_rate },
1510 out_pkt.stream_index = st->index;
1511 out_pkt.pts = st->parser->pts;
1512 out_pkt.dts = st->parser->dts;
1513 out_pkt.pos = st->parser->pos;
1514 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1516 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1517 out_pkt.pos = st->parser->frame_offset;
1519 if (st->parser->key_frame == 1 ||
1520 (st->parser->key_frame == -1 &&
1521 st->parser->pict_type == AV_PICTURE_TYPE_I))
1522 out_pkt.flags |= AV_PKT_FLAG_KEY;
1524 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1525 out_pkt.flags |= AV_PKT_FLAG_KEY;
1527 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1529 ret = ff_packet_list_put(&s->internal->parse_queue,
1530 &s->internal->parse_queue_end,
1533 av_packet_unref(&out_pkt);
1538 /* end of the stream => close and free the parser */
1539 if (pkt == &flush_pkt) {
1540 av_parser_close(st->parser);
1545 av_packet_unref(pkt);
1549 int ff_packet_list_get(AVPacketList **pkt_buffer,
1550 AVPacketList **pkt_buffer_end,
1554 av_assert0(*pkt_buffer);
1557 *pkt_buffer = pktl->next;
1559 *pkt_buffer_end = NULL;
1564 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1566 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1569 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1571 int ret = 0, i, got_packet = 0;
1572 AVDictionary *metadata = NULL;
1574 av_init_packet(pkt);
1576 while (!got_packet && !s->internal->parse_queue) {
1580 /* read next packet */
1581 ret = ff_read_packet(s, &cur_pkt);
1583 if (ret == AVERROR(EAGAIN))
1585 /* flush the parsers */
1586 for (i = 0; i < s->nb_streams; i++) {
1588 if (st->parser && st->need_parsing)
1589 parse_packet(s, NULL, st->index);
1591 /* all remaining packets are now in parse_queue =>
1592 * really terminate parsing */
1596 st = s->streams[cur_pkt.stream_index];
1598 /* update context if required */
1599 if (st->internal->need_context_update) {
1600 if (avcodec_is_open(st->internal->avctx)) {
1601 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1602 avcodec_close(st->internal->avctx);
1603 st->info->found_decoder = 0;
1606 /* close parser, because it depends on the codec */
1607 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1608 av_parser_close(st->parser);
1612 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1616 #if FF_API_LAVF_AVCTX
1617 FF_DISABLE_DEPRECATION_WARNINGS
1618 /* update deprecated public codec context */
1619 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1622 FF_ENABLE_DEPRECATION_WARNINGS
1625 st->internal->need_context_update = 0;
1628 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1629 cur_pkt.dts != AV_NOPTS_VALUE &&
1630 cur_pkt.pts < cur_pkt.dts) {
1631 av_log(s, AV_LOG_WARNING,
1632 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1633 cur_pkt.stream_index,
1634 av_ts2str(cur_pkt.pts),
1635 av_ts2str(cur_pkt.dts),
1638 if (s->debug & FF_FDEBUG_TS)
1639 av_log(s, AV_LOG_DEBUG,
1640 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1641 cur_pkt.stream_index,
1642 av_ts2str(cur_pkt.pts),
1643 av_ts2str(cur_pkt.dts),
1644 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1646 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1647 st->parser = av_parser_init(st->codecpar->codec_id);
1649 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1650 "%s, packets or times may be invalid.\n",
1651 avcodec_get_name(st->codecpar->codec_id));
1652 /* no parser available: just output the raw packets */
1653 st->need_parsing = AVSTREAM_PARSE_NONE;
1654 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1655 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1656 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1657 st->parser->flags |= PARSER_FLAG_ONCE;
1658 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1659 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1662 if (!st->need_parsing || !st->parser) {
1663 /* no parsing needed: we just output the packet as is */
1665 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1666 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1667 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1668 ff_reduce_index(s, st->index);
1669 av_add_index_entry(st, pkt->pos, pkt->dts,
1670 0, 0, AVINDEX_KEYFRAME);
1673 } else if (st->discard < AVDISCARD_ALL) {
1674 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1676 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1677 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1678 st->codecpar->channels = st->internal->avctx->channels;
1679 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1680 st->codecpar->codec_id = st->internal->avctx->codec_id;
1683 av_packet_unref(&cur_pkt);
1685 if (pkt->flags & AV_PKT_FLAG_KEY)
1686 st->skip_to_keyframe = 0;
1687 if (st->skip_to_keyframe) {
1688 av_packet_unref(&cur_pkt);
1696 if (!got_packet && s->internal->parse_queue)
1697 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1700 AVStream *st = s->streams[pkt->stream_index];
1701 int discard_padding = 0;
1702 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1703 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1704 int64_t sample = ts_to_samples(st, pts);
1705 int duration = ts_to_samples(st, pkt->duration);
1706 int64_t end_sample = sample + duration;
1707 if (duration > 0 && end_sample >= st->first_discard_sample &&
1708 sample < st->last_discard_sample)
1709 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1711 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1712 st->skip_samples = st->start_skip_samples;
1713 if (st->skip_samples || discard_padding) {
1714 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1716 AV_WL32(p, st->skip_samples);
1717 AV_WL32(p + 4, discard_padding);
1718 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1720 st->skip_samples = 0;
1723 if (st->inject_global_side_data) {
1724 for (i = 0; i < st->nb_side_data; i++) {
1725 AVPacketSideData *src_sd = &st->side_data[i];
1728 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1731 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1733 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1737 memcpy(dst_data, src_sd->data, src_sd->size);
1739 st->inject_global_side_data = 0;
1743 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1745 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1746 av_dict_copy(&s->metadata, metadata, 0);
1747 av_dict_free(&metadata);
1748 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1751 #if FF_API_LAVF_AVCTX
1752 update_stream_avctx(s);
1755 if (s->debug & FF_FDEBUG_TS)
1756 av_log(s, AV_LOG_DEBUG,
1757 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1758 "size=%d, duration=%"PRId64", flags=%d\n",
1760 av_ts2str(pkt->pts),
1761 av_ts2str(pkt->dts),
1762 pkt->size, pkt->duration, pkt->flags);
1764 /* A demuxer might have returned EOF because of an IO error, let's
1765 * propagate this back to the user. */
1766 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1772 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1774 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1780 ret = s->internal->packet_buffer
1781 ? ff_packet_list_get(&s->internal->packet_buffer,
1782 &s->internal->packet_buffer_end, pkt)
1783 : read_frame_internal(s, pkt);
1790 AVPacketList *pktl = s->internal->packet_buffer;
1793 AVPacket *next_pkt = &pktl->pkt;
1795 if (next_pkt->dts != AV_NOPTS_VALUE) {
1796 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1797 // last dts seen for this stream. if any of packets following
1798 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1799 int64_t last_dts = next_pkt->dts;
1800 av_assert2(wrap_bits <= 64);
1801 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1802 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1803 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1804 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1806 next_pkt->pts = pktl->pkt.dts;
1808 if (last_dts != AV_NOPTS_VALUE) {
1809 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1810 last_dts = pktl->pkt.dts;
1815 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1816 // Fixing the last reference frame had none pts issue (For MXF etc).
1817 // We only do this when
1819 // 2. we are not able to resolve a pts value for current packet.
1820 // 3. the packets for this stream at the end of the files had valid dts.
1821 next_pkt->pts = last_dts + next_pkt->duration;
1823 pktl = s->internal->packet_buffer;
1826 /* read packet from packet buffer, if there is data */
1827 st = s->streams[next_pkt->stream_index];
1828 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1829 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1830 ret = ff_packet_list_get(&s->internal->packet_buffer,
1831 &s->internal->packet_buffer_end, pkt);
1836 ret = read_frame_internal(s, pkt);
1838 if (pktl && ret != AVERROR(EAGAIN)) {
1845 ret = ff_packet_list_put(&s->internal->packet_buffer,
1846 &s->internal->packet_buffer_end,
1847 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1848 av_packet_unref(pkt);
1855 st = s->streams[pkt->stream_index];
1856 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1857 ff_reduce_index(s, st->index);
1858 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1861 if (is_relative(pkt->dts))
1862 pkt->dts -= RELATIVE_TS_BASE;
1863 if (is_relative(pkt->pts))
1864 pkt->pts -= RELATIVE_TS_BASE;
1869 /* XXX: suppress the packet queue */
1870 static void flush_packet_queue(AVFormatContext *s)
1874 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1875 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1876 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1878 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1881 /*******************************************************/
1884 int av_find_default_stream_index(AVFormatContext *s)
1888 int best_stream = 0;
1889 int best_score = INT_MIN;
1891 if (s->nb_streams <= 0)
1893 for (i = 0; i < s->nb_streams; i++) {
1896 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1897 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1899 if (st->codecpar->width && st->codecpar->height)
1903 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1904 if (st->codecpar->sample_rate)
1907 if (st->codec_info_nb_frames)
1910 if (st->discard != AVDISCARD_ALL)
1913 if (score > best_score) {
1921 /** Flush the frame reader. */
1922 void ff_read_frame_flush(AVFormatContext *s)
1927 flush_packet_queue(s);
1929 /* Reset read state for each stream. */
1930 for (i = 0; i < s->nb_streams; i++) {
1934 av_parser_close(st->parser);
1937 st->last_IP_pts = AV_NOPTS_VALUE;
1938 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1939 if (st->first_dts == AV_NOPTS_VALUE)
1940 st->cur_dts = RELATIVE_TS_BASE;
1942 /* We set the current DTS to an unspecified origin. */
1943 st->cur_dts = AV_NOPTS_VALUE;
1945 st->probe_packets = MAX_PROBE_PACKETS;
1947 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1948 st->pts_buffer[j] = AV_NOPTS_VALUE;
1950 if (s->internal->inject_global_side_data)
1951 st->inject_global_side_data = 1;
1953 st->skip_samples = 0;
1957 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1961 for (i = 0; i < s->nb_streams; i++) {
1962 AVStream *st = s->streams[i];
1965 av_rescale(timestamp,
1966 st->time_base.den * (int64_t) ref_st->time_base.num,
1967 st->time_base.num * (int64_t) ref_st->time_base.den);
1971 void ff_reduce_index(AVFormatContext *s, int stream_index)
1973 AVStream *st = s->streams[stream_index];
1974 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1976 if ((unsigned) st->nb_index_entries >= max_entries) {
1978 for (i = 0; 2 * i < st->nb_index_entries; i++)
1979 st->index_entries[i] = st->index_entries[2 * i];
1980 st->nb_index_entries = i;
1984 int ff_add_index_entry(AVIndexEntry **index_entries,
1985 int *nb_index_entries,
1986 unsigned int *index_entries_allocated_size,
1987 int64_t pos, int64_t timestamp,
1988 int size, int distance, int flags)
1990 AVIndexEntry *entries, *ie;
1993 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1996 if (timestamp == AV_NOPTS_VALUE)
1997 return AVERROR(EINVAL);
1999 if (size < 0 || size > 0x3FFFFFFF)
2000 return AVERROR(EINVAL);
2002 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2003 timestamp -= RELATIVE_TS_BASE;
2005 entries = av_fast_realloc(*index_entries,
2006 index_entries_allocated_size,
2007 (*nb_index_entries + 1) *
2008 sizeof(AVIndexEntry));
2012 *index_entries = entries;
2014 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2015 timestamp, AVSEEK_FLAG_ANY);
2018 index = (*nb_index_entries)++;
2019 ie = &entries[index];
2020 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2022 ie = &entries[index];
2023 if (ie->timestamp != timestamp) {
2024 if (ie->timestamp <= timestamp)
2026 memmove(entries + index + 1, entries + index,
2027 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2028 (*nb_index_entries)++;
2029 } else if (ie->pos == pos && distance < ie->min_distance)
2030 // do not reduce the distance
2031 distance = ie->min_distance;
2035 ie->timestamp = timestamp;
2036 ie->min_distance = distance;
2043 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2044 int size, int distance, int flags)
2046 timestamp = wrap_timestamp(st, timestamp);
2047 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2048 &st->index_entries_allocated_size, pos,
2049 timestamp, size, distance, flags);
2052 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2053 int64_t wanted_timestamp, int flags)
2061 // Optimize appending index entries at the end.
2062 if (b && entries[b - 1].timestamp < wanted_timestamp)
2068 // Search for the next non-discarded packet.
2069 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2071 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2077 timestamp = entries[m].timestamp;
2078 if (timestamp >= wanted_timestamp)
2080 if (timestamp <= wanted_timestamp)
2083 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2085 if (!(flags & AVSEEK_FLAG_ANY))
2086 while (m >= 0 && m < nb_entries &&
2087 !(entries[m].flags & AVINDEX_KEYFRAME))
2088 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2090 if (m == nb_entries)
2095 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2098 int64_t pos_delta = 0;
2100 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2101 const char *proto = avio_find_protocol_name(s->url);
2104 av_log(s, AV_LOG_INFO,
2105 "Protocol name not provided, cannot determine if input is local or "
2106 "a network protocol, buffers and access patterns cannot be configured "
2107 "optimally without knowing the protocol\n");
2110 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2113 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2114 AVStream *st1 = s->streams[ist1];
2115 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2116 AVStream *st2 = s->streams[ist2];
2122 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2123 AVIndexEntry *e1 = &st1->index_entries[i1];
2124 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2126 skip = FFMAX(skip, e1->size);
2127 for (; i2 < st2->nb_index_entries; i2++) {
2128 AVIndexEntry *e2 = &st2->index_entries[i2];
2129 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2130 if (e2_pts - e1_pts < time_tolerance)
2132 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2140 /* XXX This could be adjusted depending on protocol*/
2141 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2142 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2144 /* realloc the buffer and the original data will be retained */
2145 if (ffio_realloc_buf(s->pb, pos_delta)) {
2146 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2150 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2153 if (skip < (1<<23)) {
2154 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2158 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2160 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2161 wanted_timestamp, flags);
2164 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2165 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2167 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2168 if (stream_index >= 0)
2169 ts = wrap_timestamp(s->streams[stream_index], ts);
2173 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2174 int64_t target_ts, int flags)
2176 const AVInputFormat *avif = s->iformat;
2177 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2178 int64_t ts_min, ts_max, ts;
2183 if (stream_index < 0)
2186 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2189 ts_min = AV_NOPTS_VALUE;
2190 pos_limit = -1; // GCC falsely says it may be uninitialized.
2192 st = s->streams[stream_index];
2193 if (st->index_entries) {
2196 /* FIXME: Whole function must be checked for non-keyframe entries in
2197 * index case, especially read_timestamp(). */
2198 index = av_index_search_timestamp(st, target_ts,
2199 flags | AVSEEK_FLAG_BACKWARD);
2200 index = FFMAX(index, 0);
2201 e = &st->index_entries[index];
2203 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2205 ts_min = e->timestamp;
2206 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2207 pos_min, av_ts2str(ts_min));
2209 av_assert1(index == 0);
2212 index = av_index_search_timestamp(st, target_ts,
2213 flags & ~AVSEEK_FLAG_BACKWARD);
2214 av_assert0(index < st->nb_index_entries);
2216 e = &st->index_entries[index];
2217 av_assert1(e->timestamp >= target_ts);
2219 ts_max = e->timestamp;
2220 pos_limit = pos_max - e->min_distance;
2221 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2222 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2226 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2227 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2232 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2235 ff_read_frame_flush(s);
2236 ff_update_cur_dts(s, st, ts);
2241 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2242 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2244 int64_t step = 1024;
2245 int64_t limit, ts_max;
2246 int64_t filesize = avio_size(s->pb);
2247 int64_t pos_max = filesize - 1;
2250 pos_max = FFMAX(0, (pos_max) - step);
2251 ts_max = ff_read_timestamp(s, stream_index,
2252 &pos_max, limit, read_timestamp);
2254 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2255 if (ts_max == AV_NOPTS_VALUE)
2259 int64_t tmp_pos = pos_max + 1;
2260 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2261 &tmp_pos, INT64_MAX, read_timestamp);
2262 if (tmp_ts == AV_NOPTS_VALUE)
2264 av_assert0(tmp_pos > pos_max);
2267 if (tmp_pos >= filesize)
2279 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2280 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2281 int64_t ts_min, int64_t ts_max,
2282 int flags, int64_t *ts_ret,
2283 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2284 int64_t *, int64_t))
2291 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2293 if (ts_min == AV_NOPTS_VALUE) {
2294 pos_min = s->internal->data_offset;
2295 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2296 if (ts_min == AV_NOPTS_VALUE)
2300 if (ts_min >= target_ts) {
2305 if (ts_max == AV_NOPTS_VALUE) {
2306 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2308 pos_limit = pos_max;
2311 if (ts_max <= target_ts) {
2316 av_assert0(ts_min < ts_max);
2319 while (pos_min < pos_limit) {
2320 av_log(s, AV_LOG_TRACE,
2321 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2322 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2323 av_assert0(pos_limit <= pos_max);
2325 if (no_change == 0) {
2326 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2327 // interpolate position (better than dichotomy)
2328 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2330 pos_min - approximate_keyframe_distance;
2331 } else if (no_change == 1) {
2332 // bisection if interpolation did not change min / max pos last time
2333 pos = (pos_min + pos_limit) >> 1;
2335 /* linear search if bisection failed, can only happen if there
2336 * are very few or no keyframes between min/max */
2341 else if (pos > pos_limit)
2345 // May pass pos_limit instead of -1.
2346 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2351 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2352 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2353 pos_min, pos, pos_max,
2354 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2355 pos_limit, start_pos, no_change);
2356 if (ts == AV_NOPTS_VALUE) {
2357 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2360 if (target_ts <= ts) {
2361 pos_limit = start_pos - 1;
2365 if (target_ts >= ts) {
2371 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2372 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2375 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2377 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2378 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2379 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2385 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2386 int64_t pos, int flags)
2388 int64_t pos_min, pos_max;
2390 pos_min = s->internal->data_offset;
2391 pos_max = avio_size(s->pb) - 1;
2395 else if (pos > pos_max)
2398 avio_seek(s->pb, pos, SEEK_SET);
2400 s->io_repositioned = 1;
2405 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2406 int64_t timestamp, int flags)
2413 st = s->streams[stream_index];
2415 index = av_index_search_timestamp(st, timestamp, flags);
2417 if (index < 0 && st->nb_index_entries &&
2418 timestamp < st->index_entries[0].timestamp)
2421 if (index < 0 || index == st->nb_index_entries - 1) {
2425 if (st->nb_index_entries) {
2426 av_assert0(st->index_entries);
2427 ie = &st->index_entries[st->nb_index_entries - 1];
2428 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2430 ff_update_cur_dts(s, st, ie->timestamp);
2432 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2438 read_status = av_read_frame(s, &pkt);
2439 } while (read_status == AVERROR(EAGAIN));
2440 if (read_status < 0)
2442 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2443 if (pkt.flags & AV_PKT_FLAG_KEY) {
2444 av_packet_unref(&pkt);
2447 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2448 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);
2449 av_packet_unref(&pkt);
2453 av_packet_unref(&pkt);
2455 index = av_index_search_timestamp(st, timestamp, flags);
2460 ff_read_frame_flush(s);
2461 if (s->iformat->read_seek)
2462 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2464 ie = &st->index_entries[index];
2465 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2467 ff_update_cur_dts(s, st, ie->timestamp);
2472 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2473 int64_t timestamp, int flags)
2478 if (flags & AVSEEK_FLAG_BYTE) {
2479 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2481 ff_read_frame_flush(s);
2482 return seek_frame_byte(s, stream_index, timestamp, flags);
2485 if (stream_index < 0) {
2486 stream_index = av_find_default_stream_index(s);
2487 if (stream_index < 0)
2490 st = s->streams[stream_index];
2491 /* timestamp for default must be expressed in AV_TIME_BASE units */
2492 timestamp = av_rescale(timestamp, st->time_base.den,
2493 AV_TIME_BASE * (int64_t) st->time_base.num);
2496 /* first, we try the format specific seek */
2497 if (s->iformat->read_seek) {
2498 ff_read_frame_flush(s);
2499 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2505 if (s->iformat->read_timestamp &&
2506 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2507 ff_read_frame_flush(s);
2508 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2509 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2510 ff_read_frame_flush(s);
2511 return seek_frame_generic(s, stream_index, timestamp, flags);
2516 int av_seek_frame(AVFormatContext *s, int stream_index,
2517 int64_t timestamp, int flags)
2521 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2522 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2523 if ((flags & AVSEEK_FLAG_BACKWARD))
2527 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2528 flags & ~AVSEEK_FLAG_BACKWARD);
2531 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2534 ret = avformat_queue_attached_pictures(s);
2539 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2540 int64_t ts, int64_t max_ts, int flags)
2542 if (min_ts > ts || max_ts < ts)
2544 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2545 return AVERROR(EINVAL);
2548 flags |= AVSEEK_FLAG_ANY;
2549 flags &= ~AVSEEK_FLAG_BACKWARD;
2551 if (s->iformat->read_seek2) {
2553 ff_read_frame_flush(s);
2555 if (stream_index == -1 && s->nb_streams == 1) {
2556 AVRational time_base = s->streams[0]->time_base;
2557 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2558 min_ts = av_rescale_rnd(min_ts, time_base.den,
2559 time_base.num * (int64_t)AV_TIME_BASE,
2560 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2561 max_ts = av_rescale_rnd(max_ts, time_base.den,
2562 time_base.num * (int64_t)AV_TIME_BASE,
2563 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2567 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2571 ret = avformat_queue_attached_pictures(s);
2575 if (s->iformat->read_timestamp) {
2576 // try to seek via read_timestamp()
2579 // Fall back on old API if new is not implemented but old is.
2580 // Note the old API has somewhat different semantics.
2581 if (s->iformat->read_seek || 1) {
2582 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2583 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2584 if (ret<0 && ts != min_ts && max_ts != ts) {
2585 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2587 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2592 // try some generic seek like seek_frame_generic() but with new ts semantics
2593 return -1; //unreachable
2596 int avformat_flush(AVFormatContext *s)
2598 ff_read_frame_flush(s);
2602 /*******************************************************/
2605 * Return TRUE if the stream has accurate duration in any stream.
2607 * @return TRUE if the stream has accurate duration for at least one component.
2609 static int has_duration(AVFormatContext *ic)
2614 for (i = 0; i < ic->nb_streams; i++) {
2615 st = ic->streams[i];
2616 if (st->duration != AV_NOPTS_VALUE)
2619 if (ic->duration != AV_NOPTS_VALUE)
2625 * Estimate the stream timings from the one of each components.
2627 * Also computes the global bitrate if possible.
2629 static void update_stream_timings(AVFormatContext *ic)
2631 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2632 int64_t duration, duration1, duration_text, filesize;
2636 start_time = INT64_MAX;
2637 start_time_text = INT64_MAX;
2638 end_time = INT64_MIN;
2639 end_time_text = INT64_MIN;
2640 duration = INT64_MIN;
2641 duration_text = INT64_MIN;
2643 for (i = 0; i < ic->nb_streams; i++) {
2644 AVStream *st = ic->streams[i];
2645 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2646 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2647 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2648 start_time1 = av_rescale_q(st->start_time, st->time_base,
2651 start_time_text = FFMIN(start_time_text, start_time1);
2653 start_time = FFMIN(start_time, start_time1);
2654 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2656 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2657 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2658 end_time1 += start_time1;
2660 end_time_text = FFMAX(end_time_text, end_time1);
2662 end_time = FFMAX(end_time, end_time1);
2664 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2665 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2666 p->start_time = start_time1;
2667 if (p->end_time < end_time1)
2668 p->end_time = end_time1;
2671 if (st->duration != AV_NOPTS_VALUE) {
2672 duration1 = av_rescale_q(st->duration, st->time_base,
2675 duration_text = FFMAX(duration_text, duration1);
2677 duration = FFMAX(duration, duration1);
2680 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2681 start_time = start_time_text;
2682 else if (start_time > start_time_text)
2683 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2685 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2686 end_time = end_time_text;
2687 else if (end_time < end_time_text)
2688 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2690 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2691 duration = duration_text;
2692 else if (duration < duration_text)
2693 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2695 if (start_time != INT64_MAX) {
2696 ic->start_time = start_time;
2697 if (end_time != INT64_MIN) {
2698 if (ic->nb_programs > 1) {
2699 for (i = 0; i < ic->nb_programs; i++) {
2700 p = ic->programs[i];
2701 if (p->start_time != AV_NOPTS_VALUE &&
2702 p->end_time > p->start_time &&
2703 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2704 duration = FFMAX(duration, p->end_time - p->start_time);
2706 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2707 duration = FFMAX(duration, end_time - start_time);
2711 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2712 ic->duration = duration;
2714 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2715 /* compute the bitrate */
2716 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2717 (double) ic->duration;
2718 if (bitrate >= 0 && bitrate <= INT64_MAX)
2719 ic->bit_rate = bitrate;
2723 static void fill_all_stream_timings(AVFormatContext *ic)
2728 update_stream_timings(ic);
2729 for (i = 0; i < ic->nb_streams; i++) {
2730 st = ic->streams[i];
2731 if (st->start_time == AV_NOPTS_VALUE) {
2732 if (ic->start_time != AV_NOPTS_VALUE)
2733 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2735 if (ic->duration != AV_NOPTS_VALUE)
2736 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2742 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2744 int64_t filesize, duration;
2745 int i, show_warning = 0;
2748 /* if bit_rate is already set, we believe it */
2749 if (ic->bit_rate <= 0) {
2750 int64_t bit_rate = 0;
2751 for (i = 0; i < ic->nb_streams; i++) {
2752 st = ic->streams[i];
2753 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2754 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2755 if (st->codecpar->bit_rate > 0) {
2756 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2760 bit_rate += st->codecpar->bit_rate;
2761 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2762 // If we have a videostream with packets but without a bitrate
2763 // then consider the sum not known
2768 ic->bit_rate = bit_rate;
2771 /* if duration is already set, we believe it */
2772 if (ic->duration == AV_NOPTS_VALUE &&
2773 ic->bit_rate != 0) {
2774 filesize = ic->pb ? avio_size(ic->pb) : 0;
2775 if (filesize > ic->internal->data_offset) {
2776 filesize -= ic->internal->data_offset;
2777 for (i = 0; i < ic->nb_streams; i++) {
2778 st = ic->streams[i];
2779 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2780 && st->duration == AV_NOPTS_VALUE) {
2781 duration = av_rescale(8 * filesize, st->time_base.den,
2783 (int64_t) st->time_base.num);
2784 st->duration = duration;
2791 av_log(ic, AV_LOG_WARNING,
2792 "Estimating duration from bitrate, this may be inaccurate\n");
2795 #define DURATION_MAX_READ_SIZE 250000LL
2796 #define DURATION_MAX_RETRY 6
2798 /* only usable for MPEG-PS streams */
2799 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2801 AVPacket pkt1, *pkt = &pkt1;
2803 int num, den, read_size, i, ret;
2804 int found_duration = 0;
2806 int64_t filesize, offset, duration;
2809 /* flush packet queue */
2810 flush_packet_queue(ic);
2812 for (i = 0; i < ic->nb_streams; i++) {
2813 st = ic->streams[i];
2814 if (st->start_time == AV_NOPTS_VALUE &&
2815 st->first_dts == AV_NOPTS_VALUE &&
2816 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2817 av_log(ic, AV_LOG_WARNING,
2818 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2821 av_parser_close(st->parser);
2826 if (ic->skip_estimate_duration_from_pts) {
2827 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2828 goto skip_duration_calc;
2831 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2832 /* estimate the end time (duration) */
2833 /* XXX: may need to support wrapping */
2834 filesize = ic->pb ? avio_size(ic->pb) : 0;
2836 is_end = found_duration;
2837 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2841 avio_seek(ic->pb, offset, SEEK_SET);
2844 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2848 ret = ff_read_packet(ic, pkt);
2849 } while (ret == AVERROR(EAGAIN));
2852 read_size += pkt->size;
2853 st = ic->streams[pkt->stream_index];
2854 if (pkt->pts != AV_NOPTS_VALUE &&
2855 (st->start_time != AV_NOPTS_VALUE ||
2856 st->first_dts != AV_NOPTS_VALUE)) {
2857 if (pkt->duration == 0) {
2858 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2860 pkt->duration = av_rescale_rnd(1,
2861 num * (int64_t) st->time_base.den,
2862 den * (int64_t) st->time_base.num,
2866 duration = pkt->pts + pkt->duration;
2868 if (st->start_time != AV_NOPTS_VALUE)
2869 duration -= st->start_time;
2871 duration -= st->first_dts;
2873 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2874 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2875 st->duration = duration;
2876 st->info->last_duration = duration;
2879 av_packet_unref(pkt);
2882 /* check if all audio/video streams have valid duration */
2885 for (i = 0; i < ic->nb_streams; i++) {
2886 st = ic->streams[i];
2887 switch (st->codecpar->codec_type) {
2888 case AVMEDIA_TYPE_VIDEO:
2889 case AVMEDIA_TYPE_AUDIO:
2890 if (st->duration == AV_NOPTS_VALUE)
2897 ++retry <= DURATION_MAX_RETRY);
2899 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2901 /* warn about audio/video streams which duration could not be estimated */
2902 for (i = 0; i < ic->nb_streams; i++) {
2903 st = ic->streams[i];
2904 if (st->duration == AV_NOPTS_VALUE) {
2905 switch (st->codecpar->codec_type) {
2906 case AVMEDIA_TYPE_VIDEO:
2907 case AVMEDIA_TYPE_AUDIO:
2908 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2909 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2911 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2916 fill_all_stream_timings(ic);
2918 avio_seek(ic->pb, old_offset, SEEK_SET);
2919 for (i = 0; i < ic->nb_streams; i++) {
2922 st = ic->streams[i];
2923 st->cur_dts = st->first_dts;
2924 st->last_IP_pts = AV_NOPTS_VALUE;
2925 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2926 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2927 st->pts_buffer[j] = AV_NOPTS_VALUE;
2931 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2935 /* get the file size, if possible */
2936 if (ic->iformat->flags & AVFMT_NOFILE) {
2939 file_size = avio_size(ic->pb);
2940 file_size = FFMAX(0, file_size);
2943 if ((!strcmp(ic->iformat->name, "mpeg") ||
2944 !strcmp(ic->iformat->name, "mpegts")) &&
2945 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2946 /* get accurate estimate from the PTSes */
2947 estimate_timings_from_pts(ic, old_offset);
2948 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2949 } else if (has_duration(ic)) {
2950 /* at least one component has timings - we use them for all
2952 fill_all_stream_timings(ic);
2953 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2955 /* less precise: use bitrate info */
2956 estimate_timings_from_bit_rate(ic);
2957 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2959 update_stream_timings(ic);
2963 AVStream av_unused *st;
2964 for (i = 0; i < ic->nb_streams; i++) {
2965 st = ic->streams[i];
2966 if (st->time_base.den)
2967 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2968 (double) st->start_time * av_q2d(st->time_base),
2969 (double) st->duration * av_q2d(st->time_base));
2971 av_log(ic, AV_LOG_TRACE,
2972 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2973 (double) ic->start_time / AV_TIME_BASE,
2974 (double) ic->duration / AV_TIME_BASE,
2975 (int64_t)ic->bit_rate / 1000);
2979 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2981 AVCodecContext *avctx = st->internal->avctx;
2983 #define FAIL(errmsg) do { \
2985 *errmsg_ptr = errmsg; \
2989 if ( avctx->codec_id == AV_CODEC_ID_NONE
2990 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2991 FAIL("unknown codec");
2992 switch (avctx->codec_type) {
2993 case AVMEDIA_TYPE_AUDIO:
2994 if (!avctx->frame_size && determinable_frame_size(avctx))
2995 FAIL("unspecified frame size");
2996 if (st->info->found_decoder >= 0 &&
2997 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2998 FAIL("unspecified sample format");
2999 if (!avctx->sample_rate)
3000 FAIL("unspecified sample rate");
3001 if (!avctx->channels)
3002 FAIL("unspecified number of channels");
3003 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3004 FAIL("no decodable DTS frames");
3006 case AVMEDIA_TYPE_VIDEO:
3008 FAIL("unspecified size");
3009 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3010 FAIL("unspecified pixel format");
3011 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3012 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3013 FAIL("no frame in rv30/40 and no sar");
3015 case AVMEDIA_TYPE_SUBTITLE:
3016 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3017 FAIL("unspecified size");
3019 case AVMEDIA_TYPE_DATA:
3020 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3026 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3027 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3028 AVDictionary **options)
3030 AVCodecContext *avctx = st->internal->avctx;
3031 const AVCodec *codec;
3032 int got_picture = 1, ret = 0;
3033 AVFrame *frame = av_frame_alloc();
3034 AVSubtitle subtitle;
3035 AVPacket pkt = *avpkt;
3036 int do_skip_frame = 0;
3037 enum AVDiscard skip_frame;
3040 return AVERROR(ENOMEM);
3042 if (!avcodec_is_open(avctx) &&
3043 st->info->found_decoder <= 0 &&
3044 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3045 AVDictionary *thread_opt = NULL;
3047 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3050 st->info->found_decoder = -st->codecpar->codec_id;
3055 /* Force thread count to 1 since the H.264 decoder will not extract
3056 * SPS and PPS to extradata during multi-threaded decoding. */
3057 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3058 if (s->codec_whitelist)
3059 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3060 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3062 av_dict_free(&thread_opt);
3064 st->info->found_decoder = -avctx->codec_id;
3067 st->info->found_decoder = 1;
3068 } else if (!st->info->found_decoder)
3069 st->info->found_decoder = 1;
3071 if (st->info->found_decoder < 0) {
3076 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3078 skip_frame = avctx->skip_frame;
3079 avctx->skip_frame = AVDISCARD_ALL;
3082 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3084 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3085 (!st->codec_info_nb_frames &&
3086 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3088 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3089 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3090 ret = avcodec_send_packet(avctx, &pkt);
3091 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3095 ret = avcodec_receive_frame(avctx, frame);
3098 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3100 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3101 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3102 &got_picture, &pkt);
3108 st->nb_decoded_frames++;
3113 if (!pkt.data && !got_picture)
3117 if (do_skip_frame) {
3118 avctx->skip_frame = skip_frame;
3121 av_frame_free(&frame);
3125 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3127 while (tags->id != AV_CODEC_ID_NONE) {
3135 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3138 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3139 if (tag == tags[i].tag)
3141 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3142 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3144 return AV_CODEC_ID_NONE;
3147 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3149 if (bps <= 0 || bps > 64)
3150 return AV_CODEC_ID_NONE;
3155 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3157 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3159 return AV_CODEC_ID_NONE;
3164 if (sflags & (1 << (bps - 1))) {
3167 return AV_CODEC_ID_PCM_S8;
3169 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3171 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3173 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3175 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3177 return AV_CODEC_ID_NONE;
3182 return AV_CODEC_ID_PCM_U8;
3184 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3186 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3188 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3190 return AV_CODEC_ID_NONE;
3196 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3199 if (!av_codec_get_tag2(tags, id, &tag))
3204 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3208 for (i = 0; tags && tags[i]; i++) {
3209 const AVCodecTag *codec_tags = tags[i];
3210 while (codec_tags->id != AV_CODEC_ID_NONE) {
3211 if (codec_tags->id == id) {
3212 *tag = codec_tags->tag;
3221 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3224 for (i = 0; tags && tags[i]; i++) {
3225 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3226 if (id != AV_CODEC_ID_NONE)
3229 return AV_CODEC_ID_NONE;
3232 static void compute_chapters_end(AVFormatContext *s)
3235 int64_t max_time = 0;
3237 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3238 max_time = s->duration +
3239 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3241 for (i = 0; i < s->nb_chapters; i++)
3242 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3243 AVChapter *ch = s->chapters[i];
3244 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3248 for (j = 0; j < s->nb_chapters; j++) {
3249 AVChapter *ch1 = s->chapters[j];
3250 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3252 if (j != i && next_start > ch->start && next_start < end)
3255 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3259 static int get_std_framerate(int i)
3262 return (i + 1) * 1001;
3266 return (i + 31) * 1001 * 12;
3270 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3274 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3277 /* Is the time base unreliable?
3278 * This is a heuristic to balance between quick acceptance of the values in
3279 * the headers vs. some extra checks.
3280 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3281 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3282 * And there are "variable" fps files this needs to detect as well. */
3283 static int tb_unreliable(AVCodecContext *c)
3285 if (c->time_base.den >= 101LL * c->time_base.num ||
3286 c->time_base.den < 5LL * c->time_base.num ||
3287 // c->codec_tag == AV_RL32("DIVX") ||
3288 // c->codec_tag == AV_RL32("XVID") ||
3289 c->codec_tag == AV_RL32("mp4v") ||
3290 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3291 c->codec_id == AV_CODEC_ID_GIF ||
3292 c->codec_id == AV_CODEC_ID_HEVC ||
3293 c->codec_id == AV_CODEC_ID_H264)
3298 int ff_alloc_extradata(AVCodecParameters *par, int size)
3300 av_freep(&par->extradata);
3301 par->extradata_size = 0;
3303 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3304 return AVERROR(EINVAL);
3306 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3307 if (!par->extradata)
3308 return AVERROR(ENOMEM);
3310 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3311 par->extradata_size = size;
3316 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3318 int ret = ff_alloc_extradata(par, size);
3321 ret = avio_read(pb, par->extradata, size);
3323 av_freep(&par->extradata);
3324 par->extradata_size = 0;
3325 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3326 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3332 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3335 int64_t last = st->info->last_dts;
3337 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3338 && ts - (uint64_t)last < INT64_MAX) {
3339 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3340 int64_t duration = ts - last;
3342 if (!st->info->duration_error)
3343 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3344 if (!st->info->duration_error)
3345 return AVERROR(ENOMEM);
3347 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3348 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3349 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3350 if (st->info->duration_error[0][1][i] < 1e10) {
3351 int framerate = get_std_framerate(i);
3352 double sdts = dts*framerate/(1001*12);
3353 for (j= 0; j<2; j++) {
3354 int64_t ticks = llrint(sdts+j*0.5);
3355 double error= sdts - ticks + j*0.5;
3356 st->info->duration_error[j][0][i] += error;
3357 st->info->duration_error[j][1][i] += error*error;
3361 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3362 st->info->duration_count++;
3363 st->info->rfps_duration_sum += duration;
3366 if (st->info->duration_count % 10 == 0) {
3367 int n = st->info->duration_count;
3368 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3369 if (st->info->duration_error[0][1][i] < 1e10) {
3370 double a0 = st->info->duration_error[0][0][i] / n;
3371 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3372 double a1 = st->info->duration_error[1][0][i] / n;
3373 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3374 if (error0 > 0.04 && error1 > 0.04) {
3375 st->info->duration_error[0][1][i] = 2e10;
3376 st->info->duration_error[1][1][i] = 2e10;
3382 // ignore the first 4 values, they might have some random jitter
3383 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3384 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3386 if (ts != AV_NOPTS_VALUE)
3387 st->info->last_dts = ts;
3392 void ff_rfps_calculate(AVFormatContext *ic)
3396 for (i = 0; i < ic->nb_streams; i++) {
3397 AVStream *st = ic->streams[i];
3399 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3401 // the check for tb_unreliable() is not completely correct, since this is not about handling
3402 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3403 // ipmovie.c produces.
3404 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)
3405 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);
3406 if (st->info->duration_count>1 && !st->r_frame_rate.num
3407 && tb_unreliable(st->internal->avctx)) {
3409 double best_error= 0.01;
3410 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3412 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3415 if (st->info->codec_info_duration &&
3416 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3418 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3421 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3424 for (k= 0; k<2; k++) {
3425 int n = st->info->duration_count;
3426 double a= st->info->duration_error[k][0][j] / n;
3427 double error= st->info->duration_error[k][1][j]/n - a*a;
3429 if (error < best_error && best_error> 0.000000001) {
3431 num = get_std_framerate(j);
3434 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3437 // do not increase frame rate by more than 1 % in order to match a standard rate.
3438 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3439 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3441 if ( !st->avg_frame_rate.num
3442 && st->r_frame_rate.num && st->info->rfps_duration_sum
3443 && st->info->codec_info_duration <= 0
3444 && st->info->duration_count > 2
3445 && 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
3447 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3448 st->avg_frame_rate = st->r_frame_rate;
3451 av_freep(&st->info->duration_error);
3452 st->info->last_dts = AV_NOPTS_VALUE;
3453 st->info->duration_count = 0;
3454 st->info->rfps_duration_sum = 0;
3458 static int extract_extradata_check(AVStream *st)
3460 const AVBitStreamFilter *f;
3462 f = av_bsf_get_by_name("extract_extradata");
3467 const enum AVCodecID *ids;
3468 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3469 if (*ids == st->codecpar->codec_id)
3476 static int extract_extradata_init(AVStream *st)
3478 AVStreamInternal *sti = st->internal;
3479 const AVBitStreamFilter *f;
3482 f = av_bsf_get_by_name("extract_extradata");
3486 /* check that the codec id is supported */
3487 ret = extract_extradata_check(st);
3491 sti->extract_extradata.pkt = av_packet_alloc();
3492 if (!sti->extract_extradata.pkt)
3493 return AVERROR(ENOMEM);
3495 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3499 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3504 sti->extract_extradata.bsf->time_base_in = st->time_base;
3506 ret = av_bsf_init(sti->extract_extradata.bsf);
3511 sti->extract_extradata.inited = 1;
3515 av_bsf_free(&sti->extract_extradata.bsf);
3516 av_packet_free(&sti->extract_extradata.pkt);
3520 static int extract_extradata(AVStream *st, AVPacket *pkt)
3522 AVStreamInternal *sti = st->internal;
3526 if (!sti->extract_extradata.inited) {
3527 ret = extract_extradata_init(st);
3532 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3535 pkt_ref = sti->extract_extradata.pkt;
3536 ret = av_packet_ref(pkt_ref, pkt);
3540 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3542 av_packet_unref(pkt_ref);
3546 while (ret >= 0 && !sti->avctx->extradata) {
3550 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3552 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3557 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3561 av_assert0(!sti->avctx->extradata);
3562 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3563 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3564 if (!sti->avctx->extradata) {
3565 av_packet_unref(pkt_ref);
3566 return AVERROR(ENOMEM);
3568 memcpy(sti->avctx->extradata, extradata, extradata_size);
3569 sti->avctx->extradata_size = extradata_size;
3571 av_packet_unref(pkt_ref);
3577 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3579 int i, count = 0, ret = 0, j;
3582 AVCodecContext *avctx;
3583 AVPacket pkt1, *pkt;
3584 int64_t old_offset = avio_tell(ic->pb);
3585 // new streams might appear, no options for those
3586 int orig_nb_streams = ic->nb_streams;
3588 int64_t max_analyze_duration = ic->max_analyze_duration;
3589 int64_t max_stream_analyze_duration;
3590 int64_t max_subtitle_analyze_duration;
3591 int64_t probesize = ic->probesize;
3592 int eof_reached = 0;
3593 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3595 flush_codecs = probesize > 0;
3597 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3599 max_stream_analyze_duration = max_analyze_duration;
3600 max_subtitle_analyze_duration = max_analyze_duration;
3601 if (!max_analyze_duration) {
3602 max_stream_analyze_duration =
3603 max_analyze_duration = 5*AV_TIME_BASE;
3604 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3605 if (!strcmp(ic->iformat->name, "flv"))
3606 max_stream_analyze_duration = 90*AV_TIME_BASE;
3607 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3608 max_stream_analyze_duration = 7*AV_TIME_BASE;
3612 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3613 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3615 for (i = 0; i < ic->nb_streams; i++) {
3616 const AVCodec *codec;
3617 AVDictionary *thread_opt = NULL;
3618 st = ic->streams[i];
3619 avctx = st->internal->avctx;
3621 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3622 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3623 /* if (!st->time_base.num)
3625 if (!avctx->time_base.num)
3626 avctx->time_base = st->time_base;
3629 /* check if the caller has overridden the codec id */
3630 #if FF_API_LAVF_AVCTX
3631 FF_DISABLE_DEPRECATION_WARNINGS
3632 if (st->codec->codec_id != st->internal->orig_codec_id) {
3633 st->codecpar->codec_id = st->codec->codec_id;
3634 st->codecpar->codec_type = st->codec->codec_type;
3635 st->internal->orig_codec_id = st->codec->codec_id;
3637 FF_ENABLE_DEPRECATION_WARNINGS
3639 // only for the split stuff
3640 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3641 st->parser = av_parser_init(st->codecpar->codec_id);
3643 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3644 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3645 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3646 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3648 } else if (st->need_parsing) {
3649 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3650 "%s, packets or times may be invalid.\n",
3651 avcodec_get_name(st->codecpar->codec_id));
3655 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3656 st->internal->orig_codec_id = st->codecpar->codec_id;
3658 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3660 goto find_stream_info_err;
3661 if (st->request_probe <= 0)
3662 st->internal->avctx_inited = 1;
3664 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3666 /* Force thread count to 1 since the H.264 decoder will not extract
3667 * SPS and PPS to extradata during multi-threaded decoding. */
3668 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3670 if (ic->codec_whitelist)
3671 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3673 /* Ensure that subtitle_header is properly set. */
3674 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3675 && codec && !avctx->codec) {
3676 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3677 av_log(ic, AV_LOG_WARNING,
3678 "Failed to open codec in %s\n",__FUNCTION__);
3681 // Try to just open decoders, in case this is enough to get parameters.
3682 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3683 if (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 av_dict_free(&thread_opt);
3692 for (i = 0; i < ic->nb_streams; i++) {
3693 #if FF_API_R_FRAME_RATE
3694 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3696 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3697 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3702 int analyzed_all_streams;
3703 if (ff_check_interrupt(&ic->interrupt_callback)) {
3705 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3709 /* check if one codec still needs to be handled */
3710 for (i = 0; i < ic->nb_streams; i++) {
3711 int fps_analyze_framecount = 20;
3714 st = ic->streams[i];
3715 if (!has_codec_parameters(st, NULL))
3717 /* If the timebase is coarse (like the usual millisecond precision
3718 * of mkv), we need to analyze more frames to reliably arrive at
3719 * the correct fps. */
3720 if (av_q2d(st->time_base) > 0.0005)
3721 fps_analyze_framecount *= 2;
3722 if (!tb_unreliable(st->internal->avctx))
3723 fps_analyze_framecount = 0;
3724 if (ic->fps_probe_size >= 0)
3725 fps_analyze_framecount = ic->fps_probe_size;
3726 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3727 fps_analyze_framecount = 0;
3728 /* variable fps and no guess at the real fps */
3729 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3730 st->info->codec_info_duration_fields/2 :
3731 st->info->duration_count;
3732 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3733 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3734 if (count < fps_analyze_framecount)
3737 // Look at the first 3 frames if there is evidence of frame delay
3738 // but the decoder delay is not set.
3739 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3741 if (!st->internal->avctx->extradata &&
3742 (!st->internal->extract_extradata.inited ||
3743 st->internal->extract_extradata.bsf) &&
3744 extract_extradata_check(st))
3746 if (st->first_dts == AV_NOPTS_VALUE &&
3747 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3748 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3749 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3750 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3753 analyzed_all_streams = 0;
3754 if (!missing_streams || !*missing_streams)
3755 if (i == ic->nb_streams) {
3756 analyzed_all_streams = 1;
3757 /* NOTE: If the format has no header, then we need to read some
3758 * packets to get most of the streams, so we cannot stop here. */
3759 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3760 /* If we found the info for all the codecs, we can stop. */
3762 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3767 /* We did not get all the codec info, but we read too much data. */
3768 if (read_size >= probesize) {
3770 av_log(ic, AV_LOG_DEBUG,
3771 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3772 for (i = 0; i < ic->nb_streams; i++)
3773 if (!ic->streams[i]->r_frame_rate.num &&
3774 ic->streams[i]->info->duration_count <= 1 &&
3775 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3776 strcmp(ic->iformat->name, "image2"))
3777 av_log(ic, AV_LOG_WARNING,
3778 "Stream #%d: not enough frames to estimate rate; "
3779 "consider increasing probesize\n", i);
3783 /* NOTE: A new stream can be added there if no header in file
3784 * (AVFMTCTX_NOHEADER). */
3785 ret = read_frame_internal(ic, &pkt1);
3786 if (ret == AVERROR(EAGAIN))
3797 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3798 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3799 &ic->internal->packet_buffer_end,
3802 goto find_stream_info_err;
3805 st = ic->streams[pkt->stream_index];
3806 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3807 read_size += pkt->size;
3809 avctx = st->internal->avctx;
3810 if (!st->internal->avctx_inited) {
3811 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3813 goto find_stream_info_err;
3814 st->internal->avctx_inited = 1;
3817 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3818 /* check for non-increasing dts */
3819 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3820 st->info->fps_last_dts >= pkt->dts) {
3821 av_log(ic, AV_LOG_DEBUG,
3822 "Non-increasing DTS in stream %d: packet %d with DTS "
3823 "%"PRId64", packet %d with DTS %"PRId64"\n",
3824 st->index, st->info->fps_last_dts_idx,
3825 st->info->fps_last_dts, st->codec_info_nb_frames,
3827 st->info->fps_first_dts =
3828 st->info->fps_last_dts = AV_NOPTS_VALUE;
3830 /* Check for a discontinuity in dts. If the difference in dts
3831 * is more than 1000 times the average packet duration in the
3832 * sequence, we treat it as a discontinuity. */
3833 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3834 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3835 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3836 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3837 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3838 av_log(ic, AV_LOG_WARNING,
3839 "DTS discontinuity in stream %d: packet %d with DTS "
3840 "%"PRId64", packet %d with DTS %"PRId64"\n",
3841 st->index, st->info->fps_last_dts_idx,
3842 st->info->fps_last_dts, st->codec_info_nb_frames,
3844 st->info->fps_first_dts =
3845 st->info->fps_last_dts = AV_NOPTS_VALUE;
3848 /* update stored dts values */
3849 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3850 st->info->fps_first_dts = pkt->dts;
3851 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3853 st->info->fps_last_dts = pkt->dts;
3854 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3856 if (st->codec_info_nb_frames>1) {
3860 if (st->time_base.den > 0)
3861 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3862 if (st->avg_frame_rate.num > 0)
3863 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3866 && st->codec_info_nb_frames>30
3867 && st->info->fps_first_dts != AV_NOPTS_VALUE
3868 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3869 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3871 if (analyzed_all_streams) limit = max_analyze_duration;
3872 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3873 else limit = max_stream_analyze_duration;
3876 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3878 t, pkt->stream_index);
3879 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3880 av_packet_unref(pkt);
3883 if (pkt->duration) {
3884 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3885 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3887 st->info->codec_info_duration += pkt->duration;
3888 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3891 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3892 #if FF_API_R_FRAME_RATE
3893 ff_rfps_add_frame(ic, st, pkt->dts);
3895 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3896 st->info->frame_delay_evidence = 1;
3898 if (!st->internal->avctx->extradata) {
3899 ret = extract_extradata(st, pkt);
3901 goto find_stream_info_err;
3904 /* If still no information, we try to open the codec and to
3905 * decompress the frame. We try to avoid that in most cases as
3906 * it takes longer and uses more memory. For MPEG-4, we need to
3907 * decompress for QuickTime.
3909 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3910 * least one frame of codec data, this makes sure the codec initializes
3911 * the channel configuration and does not only trust the values from
3913 try_decode_frame(ic, st, pkt,
3914 (options && i < orig_nb_streams) ? &options[i] : NULL);
3916 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3917 av_packet_unref(pkt);
3919 st->codec_info_nb_frames++;
3925 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3926 st = ic->streams[stream_index];
3927 avctx = st->internal->avctx;
3928 if (!has_codec_parameters(st, NULL)) {
3929 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3930 if (codec && !avctx->codec) {
3931 AVDictionary *opts = NULL;
3932 if (ic->codec_whitelist)
3933 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3934 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3935 av_log(ic, AV_LOG_WARNING,
3936 "Failed to open codec in %s\n",__FUNCTION__);
3937 av_dict_free(&opts);
3941 // EOF already reached while reading the stream above.
3942 // So continue with reoordering DTS with whatever delay we have.
3943 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3944 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3950 AVPacket empty_pkt = { 0 };
3952 av_init_packet(&empty_pkt);
3954 for (i = 0; i < ic->nb_streams; i++) {
3956 st = ic->streams[i];
3958 /* flush the decoders */
3959 if (st->info->found_decoder == 1) {
3961 err = try_decode_frame(ic, st, &empty_pkt,
3962 (options && i < orig_nb_streams)
3963 ? &options[i] : NULL);
3964 } while (err > 0 && !has_codec_parameters(st, NULL));
3967 av_log(ic, AV_LOG_INFO,
3968 "decoding for stream %d failed\n", st->index);
3974 ff_rfps_calculate(ic);
3976 for (i = 0; i < ic->nb_streams; i++) {
3977 st = ic->streams[i];
3978 avctx = st->internal->avctx;
3979 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3980 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3981 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3982 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3983 avctx->codec_tag= tag;
3986 /* estimate average framerate if not set by demuxer */
3987 if (st->info->codec_info_duration_fields &&
3988 !st->avg_frame_rate.num &&
3989 st->info->codec_info_duration) {
3991 double best_error = 0.01;
3992 AVRational codec_frame_rate = avctx->framerate;
3994 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3995 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3996 st->info->codec_info_duration < 0)
3998 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3999 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4000 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4002 /* Round guessed framerate to a "standard" framerate if it's
4003 * within 1% of the original estimate. */
4004 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4005 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4006 double error = fabs(av_q2d(st->avg_frame_rate) /
4007 av_q2d(std_fps) - 1);
4009 if (error < best_error) {
4011 best_fps = std_fps.num;
4014 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4015 error = fabs(av_q2d(codec_frame_rate) /
4016 av_q2d(std_fps) - 1);
4017 if (error < best_error) {
4019 best_fps = std_fps.num;
4024 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4025 best_fps, 12 * 1001, INT_MAX);
4028 if (!st->r_frame_rate.num) {
4029 if ( avctx->time_base.den * (int64_t) st->time_base.num
4030 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4031 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4032 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4034 st->r_frame_rate.num = st->time_base.den;
4035 st->r_frame_rate.den = st->time_base.num;
4038 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4039 AVRational hw_ratio = { avctx->height, avctx->width };
4040 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4043 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4044 if (!avctx->bits_per_coded_sample)
4045 avctx->bits_per_coded_sample =
4046 av_get_bits_per_sample(avctx->codec_id);
4047 // set stream disposition based on audio service type
4048 switch (avctx->audio_service_type) {
4049 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4050 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4052 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4053 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4055 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4056 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4058 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4059 st->disposition = AV_DISPOSITION_COMMENT;
4061 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4062 st->disposition = AV_DISPOSITION_KARAOKE;
4069 estimate_timings(ic, old_offset);
4071 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4073 if (ret >= 0 && ic->nb_streams)
4074 /* We could not have all the codec parameters before EOF. */
4076 for (i = 0; i < ic->nb_streams; i++) {
4078 st = ic->streams[i];
4080 /* if no packet was ever seen, update context now for has_codec_parameters */
4081 if (!st->internal->avctx_inited) {
4082 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4083 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4084 st->codecpar->format = st->internal->avctx->sample_fmt;
4085 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4087 goto find_stream_info_err;
4089 if (!has_codec_parameters(st, &errmsg)) {
4091 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4092 av_log(ic, AV_LOG_WARNING,
4093 "Could not find codec parameters for stream %d (%s): %s\n"
4094 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4101 compute_chapters_end(ic);
4103 /* update the stream parameters from the internal codec contexts */
4104 for (i = 0; i < ic->nb_streams; i++) {
4105 st = ic->streams[i];
4107 if (st->internal->avctx_inited) {
4108 int orig_w = st->codecpar->width;
4109 int orig_h = st->codecpar->height;
4110 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4112 goto find_stream_info_err;
4114 // The decoder might reduce the video size by the lowres factor.
4115 if (st->internal->avctx->lowres && orig_w) {
4116 st->codecpar->width = orig_w;
4117 st->codecpar->height = orig_h;
4122 #if FF_API_LAVF_AVCTX
4123 FF_DISABLE_DEPRECATION_WARNINGS
4124 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4126 goto find_stream_info_err;
4129 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4130 // by the lowres factor.
4131 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4132 st->codec->lowres = st->internal->avctx->lowres;
4133 st->codec->width = st->internal->avctx->width;
4134 st->codec->height = st->internal->avctx->height;
4138 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4139 st->codec->time_base = st->internal->avctx->time_base;
4140 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4142 st->codec->framerate = st->avg_frame_rate;
4144 if (st->internal->avctx->subtitle_header) {
4145 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4146 if (!st->codec->subtitle_header)
4147 goto find_stream_info_err;
4148 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4149 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4150 st->codec->subtitle_header_size);
4153 // Fields unavailable in AVCodecParameters
4154 st->codec->coded_width = st->internal->avctx->coded_width;
4155 st->codec->coded_height = st->internal->avctx->coded_height;
4156 st->codec->properties = st->internal->avctx->properties;
4157 FF_ENABLE_DEPRECATION_WARNINGS
4160 st->internal->avctx_inited = 0;
4163 find_stream_info_err:
4164 for (i = 0; i < ic->nb_streams; i++) {
4165 st = ic->streams[i];
4167 av_freep(&st->info->duration_error);
4168 avcodec_close(ic->streams[i]->internal->avctx);
4169 av_freep(&ic->streams[i]->info);
4170 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4171 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4174 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4175 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4179 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4183 for (i = 0; i < ic->nb_programs; i++) {
4184 if (ic->programs[i] == last) {
4188 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4189 if (ic->programs[i]->stream_index[j] == s)
4190 return ic->programs[i];
4196 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4197 int wanted_stream_nb, int related_stream,
4198 AVCodec **decoder_ret, int flags)
4200 int i, nb_streams = ic->nb_streams;
4201 int ret = AVERROR_STREAM_NOT_FOUND;
4202 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4203 int count, multiframe, disposition;
4204 int64_t best_bitrate = -1;
4206 unsigned *program = NULL;
4207 const AVCodec *decoder = NULL, *best_decoder = NULL;
4209 if (related_stream >= 0 && wanted_stream_nb < 0) {
4210 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4212 program = p->stream_index;
4213 nb_streams = p->nb_stream_indexes;
4216 for (i = 0; i < nb_streams; i++) {
4217 int real_stream_index = program ? program[i] : i;
4218 AVStream *st = ic->streams[real_stream_index];
4219 AVCodecParameters *par = st->codecpar;
4220 if (par->codec_type != type)
4222 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4224 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4227 decoder = find_decoder(ic, st, par->codec_id);
4230 ret = AVERROR_DECODER_NOT_FOUND;
4234 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4235 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4236 count = st->codec_info_nb_frames;
4237 bitrate = par->bit_rate;
4238 multiframe = FFMIN(5, count);
4239 if ((best_disposition > disposition) ||
4240 (best_disposition == disposition && best_multiframe > multiframe) ||
4241 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4242 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4244 best_disposition = disposition;
4246 best_bitrate = bitrate;
4247 best_multiframe = multiframe;
4248 ret = real_stream_index;
4249 best_decoder = decoder;
4250 if (program && i == nb_streams - 1 && ret < 0) {
4252 nb_streams = ic->nb_streams;
4253 /* no related stream found, try again with everything */
4258 *decoder_ret = (AVCodec*)best_decoder;
4262 /*******************************************************/
4264 int av_read_play(AVFormatContext *s)
4266 if (s->iformat->read_play)
4267 return s->iformat->read_play(s);
4269 return avio_pause(s->pb, 0);
4270 return AVERROR(ENOSYS);
4273 int av_read_pause(AVFormatContext *s)
4275 if (s->iformat->read_pause)
4276 return s->iformat->read_pause(s);
4278 return avio_pause(s->pb, 1);
4279 return AVERROR(ENOSYS);
4282 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4287 dst->time_base = src->time_base;
4288 dst->nb_frames = src->nb_frames;
4289 dst->disposition = src->disposition;
4290 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4291 dst->avg_frame_rate = src->avg_frame_rate;
4292 dst->r_frame_rate = src->r_frame_rate;
4294 av_dict_free(&dst->metadata);
4295 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4299 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4303 /* Free existing side data*/
4304 for (i = 0; i < dst->nb_side_data; i++)
4305 av_free(dst->side_data[i].data);
4306 av_freep(&dst->side_data);
4307 dst->nb_side_data = 0;
4309 /* Copy side data if present */
4310 if (src->nb_side_data) {
4311 dst->side_data = av_mallocz_array(src->nb_side_data,
4312 sizeof(AVPacketSideData));
4313 if (!dst->side_data)
4314 return AVERROR(ENOMEM);
4315 dst->nb_side_data = src->nb_side_data;
4317 for (i = 0; i < src->nb_side_data; i++) {
4318 uint8_t *data = av_memdup(src->side_data[i].data,
4319 src->side_data[i].size);
4321 return AVERROR(ENOMEM);
4322 dst->side_data[i].type = src->side_data[i].type;
4323 dst->side_data[i].size = src->side_data[i].size;
4324 dst->side_data[i].data = data;
4328 #if FF_API_LAVF_FFSERVER
4329 FF_DISABLE_DEPRECATION_WARNINGS
4330 av_freep(&dst->recommended_encoder_configuration);
4331 if (src->recommended_encoder_configuration) {
4332 const char *conf_str = src->recommended_encoder_configuration;
4333 dst->recommended_encoder_configuration = av_strdup(conf_str);
4334 if (!dst->recommended_encoder_configuration)
4335 return AVERROR(ENOMEM);
4337 FF_ENABLE_DEPRECATION_WARNINGS
4343 static void free_stream(AVStream **pst)
4345 AVStream *st = *pst;
4351 for (i = 0; i < st->nb_side_data; i++)
4352 av_freep(&st->side_data[i].data);
4353 av_freep(&st->side_data);
4356 av_parser_close(st->parser);
4358 if (st->attached_pic.data)
4359 av_packet_unref(&st->attached_pic);
4362 avcodec_free_context(&st->internal->avctx);
4363 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4364 av_bsf_free(&st->internal->bsfcs[i]);
4365 av_freep(&st->internal->bsfcs);
4367 av_freep(&st->internal->priv_pts);
4368 av_bsf_free(&st->internal->extract_extradata.bsf);
4369 av_packet_free(&st->internal->extract_extradata.pkt);
4371 av_freep(&st->internal);
4373 av_dict_free(&st->metadata);
4374 avcodec_parameters_free(&st->codecpar);
4375 av_freep(&st->probe_data.buf);
4376 av_freep(&st->index_entries);
4377 #if FF_API_LAVF_AVCTX
4378 FF_DISABLE_DEPRECATION_WARNINGS
4379 avcodec_free_context(&st->codec);
4380 FF_ENABLE_DEPRECATION_WARNINGS
4382 av_freep(&st->priv_data);
4384 av_freep(&st->info->duration_error);
4385 av_freep(&st->info);
4386 #if FF_API_LAVF_FFSERVER
4387 FF_DISABLE_DEPRECATION_WARNINGS
4388 av_freep(&st->recommended_encoder_configuration);
4389 FF_ENABLE_DEPRECATION_WARNINGS
4395 void ff_free_stream(AVFormatContext *s, AVStream *st)
4397 av_assert0(s->nb_streams>0);
4398 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4400 free_stream(&s->streams[ --s->nb_streams ]);
4403 void avformat_free_context(AVFormatContext *s)
4411 if (s->iformat && s->iformat->priv_class && s->priv_data)
4412 av_opt_free(s->priv_data);
4413 if (s->oformat && s->oformat->priv_class && s->priv_data)
4414 av_opt_free(s->priv_data);
4416 for (i = s->nb_streams - 1; i >= 0; i--)
4417 ff_free_stream(s, s->streams[i]);
4420 for (i = s->nb_programs - 1; i >= 0; i--) {
4421 av_dict_free(&s->programs[i]->metadata);
4422 av_freep(&s->programs[i]->stream_index);
4423 av_freep(&s->programs[i]);
4425 av_freep(&s->programs);
4426 av_freep(&s->priv_data);
4427 while (s->nb_chapters--) {
4428 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4429 av_freep(&s->chapters[s->nb_chapters]);
4431 av_freep(&s->chapters);
4432 av_dict_free(&s->metadata);
4433 av_dict_free(&s->internal->id3v2_meta);
4434 av_freep(&s->streams);
4435 flush_packet_queue(s);
4436 av_freep(&s->internal);
4441 void avformat_close_input(AVFormatContext **ps)
4452 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4453 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4456 flush_packet_queue(s);
4459 if (s->iformat->read_close)
4460 s->iformat->read_close(s);
4462 avformat_free_context(s);
4469 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4475 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4476 if (s->max_streams < INT_MAX/sizeof(*streams))
4477 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);
4480 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4483 s->streams = streams;
4485 st = av_mallocz(sizeof(AVStream));
4488 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4492 st->info->last_dts = AV_NOPTS_VALUE;
4494 #if FF_API_LAVF_AVCTX
4495 FF_DISABLE_DEPRECATION_WARNINGS
4496 st->codec = avcodec_alloc_context3(c);
4502 FF_ENABLE_DEPRECATION_WARNINGS
4505 st->internal = av_mallocz(sizeof(*st->internal));
4509 st->codecpar = avcodec_parameters_alloc();
4513 st->internal->avctx = avcodec_alloc_context3(NULL);
4514 if (!st->internal->avctx)
4518 #if FF_API_LAVF_AVCTX
4519 FF_DISABLE_DEPRECATION_WARNINGS
4520 /* no default bitrate if decoding */
4521 st->codec->bit_rate = 0;
4522 FF_ENABLE_DEPRECATION_WARNINGS
4525 /* default pts setting is MPEG-like */
4526 avpriv_set_pts_info(st, 33, 1, 90000);
4527 /* we set the current DTS to 0 so that formats without any timestamps
4528 * but durations get some timestamps, formats with some unknown
4529 * timestamps have their first few packets buffered and the
4530 * timestamps corrected before they are returned to the user */
4531 st->cur_dts = RELATIVE_TS_BASE;
4533 st->cur_dts = AV_NOPTS_VALUE;
4536 st->index = s->nb_streams;
4537 st->start_time = AV_NOPTS_VALUE;
4538 st->duration = AV_NOPTS_VALUE;
4539 st->first_dts = AV_NOPTS_VALUE;
4540 st->probe_packets = MAX_PROBE_PACKETS;
4541 st->pts_wrap_reference = AV_NOPTS_VALUE;
4542 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4544 st->last_IP_pts = AV_NOPTS_VALUE;
4545 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4546 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4547 st->pts_buffer[i] = AV_NOPTS_VALUE;
4549 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4551 #if FF_API_R_FRAME_RATE
4552 st->info->last_dts = AV_NOPTS_VALUE;
4554 st->info->fps_first_dts = AV_NOPTS_VALUE;
4555 st->info->fps_last_dts = AV_NOPTS_VALUE;
4557 st->inject_global_side_data = s->internal->inject_global_side_data;
4559 st->internal->need_context_update = 1;
4561 s->streams[s->nb_streams++] = st;
4568 AVProgram *av_new_program(AVFormatContext *ac, int id)
4570 AVProgram *program = NULL;
4573 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4575 for (i = 0; i < ac->nb_programs; i++)
4576 if (ac->programs[i]->id == id)
4577 program = ac->programs[i];
4580 program = av_mallocz(sizeof(AVProgram));
4583 dynarray_add(&ac->programs, &ac->nb_programs, program);
4584 program->discard = AVDISCARD_NONE;
4585 program->pmt_version = -1;
4588 program->pts_wrap_reference = AV_NOPTS_VALUE;
4589 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4591 program->start_time =
4592 program->end_time = AV_NOPTS_VALUE;
4597 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4598 int64_t start, int64_t end, const char *title)
4600 AVChapter *chapter = NULL;
4603 if (end != AV_NOPTS_VALUE && start > end) {
4604 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4608 for (i = 0; i < s->nb_chapters; i++)
4609 if (s->chapters[i]->id == id)
4610 chapter = s->chapters[i];
4613 chapter = av_mallocz(sizeof(AVChapter));
4616 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4618 av_dict_set(&chapter->metadata, "title", title, 0);
4620 chapter->time_base = time_base;
4621 chapter->start = start;
4627 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4630 AVProgram *program = NULL;
4633 if (idx >= ac->nb_streams) {
4634 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4638 for (i = 0; i < ac->nb_programs; i++) {
4639 if (ac->programs[i]->id != progid)
4641 program = ac->programs[i];
4642 for (j = 0; j < program->nb_stream_indexes; j++)
4643 if (program->stream_index[j] == idx)
4646 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4649 program->stream_index = tmp;
4650 program->stream_index[program->nb_stream_indexes++] = idx;
4655 uint64_t ff_ntp_time(void)
4657 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4660 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4662 uint64_t ntp_ts, frac_part, sec;
4665 //current ntp time in seconds and micro seconds
4666 sec = ntp_time_us / 1000000;
4667 usec = ntp_time_us % 1000000;
4669 //encoding in ntp timestamp format
4670 frac_part = usec * 0xFFFFFFFFULL;
4671 frac_part /= 1000000;
4673 if (sec > 0xFFFFFFFFULL)
4674 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4677 ntp_ts |= frac_part;
4682 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4685 char *q, buf1[20], c;
4686 int nd, len, percentd_found;
4698 while (av_isdigit(*p))
4699 nd = nd * 10 + *p++ - '0';
4701 } while (av_isdigit(c));
4707 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4712 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4714 if ((q - buf + len) > buf_size - 1)
4716 memcpy(q, buf1, len);
4724 if ((q - buf) < buf_size - 1)
4728 if (!percentd_found)
4737 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4739 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4742 void av_url_split(char *proto, int proto_size,
4743 char *authorization, int authorization_size,
4744 char *hostname, int hostname_size,
4745 int *port_ptr, char *path, int path_size, const char *url)
4747 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4753 if (authorization_size > 0)
4754 authorization[0] = 0;
4755 if (hostname_size > 0)
4760 /* parse protocol */
4761 if ((p = strchr(url, ':'))) {
4762 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4769 /* no protocol means plain filename */
4770 av_strlcpy(path, url, path_size);
4774 /* separate path from hostname */
4775 ls = strchr(p, '/');
4776 ls2 = strchr(p, '?');
4780 ls = FFMIN(ls, ls2);
4782 av_strlcpy(path, ls, path_size);
4784 ls = &p[strlen(p)]; // XXX
4786 /* the rest is hostname, use that to parse auth/port */
4788 /* authorization (user[:pass]@hostname) */
4790 while ((at = strchr(p, '@')) && at < ls) {
4791 av_strlcpy(authorization, at2,
4792 FFMIN(authorization_size, at + 1 - at2));
4793 p = at + 1; /* skip '@' */
4796 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4798 av_strlcpy(hostname, p + 1,
4799 FFMIN(hostname_size, brk - p));
4800 if (brk[1] == ':' && port_ptr)
4801 *port_ptr = atoi(brk + 2);
4802 } else if ((col = strchr(p, ':')) && col < ls) {
4803 av_strlcpy(hostname, p,
4804 FFMIN(col + 1 - p, hostname_size));
4806 *port_ptr = atoi(col + 1);
4808 av_strlcpy(hostname, p,
4809 FFMIN(ls + 1 - p, hostname_size));
4813 int ff_mkdir_p(const char *path)
4816 char *temp = av_strdup(path);
4820 if (!path || !temp) {
4824 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4826 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4830 for ( ; *pos != '\0'; ++pos) {
4831 if (*pos == '/' || *pos == '\\') {
4834 ret = mkdir(temp, 0755);
4839 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4840 ret = mkdir(temp, 0755);
4847 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4850 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4853 'C', 'D', 'E', 'F' };
4854 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4857 'c', 'd', 'e', 'f' };
4858 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4860 for (i = 0; i < s; i++) {
4861 buff[i * 2] = hex_table[src[i] >> 4];
4862 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4868 int ff_hex_to_data(uint8_t *data, const char *p)
4875 p += strspn(p, SPACE_CHARS);
4878 c = av_toupper((unsigned char) *p++);
4879 if (c >= '0' && c <= '9')
4881 else if (c >= 'A' && c <= 'F')
4896 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4897 unsigned int pts_num, unsigned int pts_den)
4900 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4901 if (new_tb.num != pts_num)
4902 av_log(NULL, AV_LOG_DEBUG,
4903 "st:%d removing common factor %d from timebase\n",
4904 s->index, pts_num / new_tb.num);
4906 av_log(NULL, AV_LOG_WARNING,
4907 "st:%d has too large timebase, reducing\n", s->index);
4909 if (new_tb.num <= 0 || new_tb.den <= 0) {
4910 av_log(NULL, AV_LOG_ERROR,
4911 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4912 new_tb.num, new_tb.den,
4916 s->time_base = new_tb;
4917 #if FF_API_LAVF_AVCTX
4918 FF_DISABLE_DEPRECATION_WARNINGS
4919 s->codec->pkt_timebase = new_tb;
4920 FF_ENABLE_DEPRECATION_WARNINGS
4922 s->internal->avctx->pkt_timebase = new_tb;
4923 s->pts_wrap_bits = pts_wrap_bits;
4926 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4929 const char *ptr = str;
4931 /* Parse key=value pairs. */
4934 char *dest = NULL, *dest_end;
4935 int key_len, dest_len = 0;
4937 /* Skip whitespace and potential commas. */
4938 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4945 if (!(ptr = strchr(key, '=')))
4948 key_len = ptr - key;
4950 callback_get_buf(context, key, key_len, &dest, &dest_len);
4951 dest_end = dest + dest_len - 1;
4955 while (*ptr && *ptr != '\"') {
4959 if (dest && dest < dest_end)
4963 if (dest && dest < dest_end)
4971 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4972 if (dest && dest < dest_end)
4980 int ff_find_stream_index(AVFormatContext *s, int id)
4983 for (i = 0; i < s->nb_streams; i++)
4984 if (s->streams[i]->id == id)
4989 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4993 unsigned int codec_tag;
4994 if (ofmt->query_codec)
4995 return ofmt->query_codec(codec_id, std_compliance);
4996 else if (ofmt->codec_tag)
4997 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4998 else if (codec_id == ofmt->video_codec ||
4999 codec_id == ofmt->audio_codec ||
5000 codec_id == ofmt->subtitle_codec ||
5001 codec_id == ofmt->data_codec)
5004 return AVERROR_PATCHWELCOME;
5007 int avformat_network_init(void)
5011 if ((ret = ff_network_init()) < 0)
5013 if ((ret = ff_tls_init()) < 0)
5019 int avformat_network_deinit(void)
5028 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5029 uint64_t channel_layout, int32_t sample_rate,
5030 int32_t width, int32_t height)
5036 return AVERROR(EINVAL);
5039 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5041 if (channel_layout) {
5043 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5047 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5049 if (width || height) {
5051 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5053 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5055 return AVERROR(ENOMEM);
5056 bytestream_put_le32(&data, flags);
5058 bytestream_put_le32(&data, channels);
5060 bytestream_put_le64(&data, channel_layout);
5062 bytestream_put_le32(&data, sample_rate);
5063 if (width || height) {
5064 bytestream_put_le32(&data, width);
5065 bytestream_put_le32(&data, height);
5070 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5072 AVRational undef = {0, 1};
5073 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5074 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5075 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5077 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5078 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5079 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5080 stream_sample_aspect_ratio = undef;
5082 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5083 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5084 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5085 frame_sample_aspect_ratio = undef;
5087 if (stream_sample_aspect_ratio.num)
5088 return stream_sample_aspect_ratio;
5090 return frame_sample_aspect_ratio;
5093 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5095 AVRational fr = st->r_frame_rate;
5096 AVRational codec_fr = st->internal->avctx->framerate;
5097 AVRational avg_fr = st->avg_frame_rate;
5099 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5100 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5105 if (st->internal->avctx->ticks_per_frame > 1) {
5106 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5107 (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))
5115 * Matches a stream specifier (but ignores requested index).
5117 * @param indexptr set to point to the requested stream index if there is one
5119 * @return <0 on error
5120 * 0 if st is NOT a matching stream
5121 * >0 if st is a matching stream
5123 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5124 const char *spec, const char **indexptr, AVProgram **p)
5126 int match = 1; /* Stores if the specifier matches so far. */
5128 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5132 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5133 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5134 enum AVMediaType type;
5138 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5139 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5140 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5141 case 'd': type = AVMEDIA_TYPE_DATA; break;
5142 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5143 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5144 default: av_assert0(0);
5146 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5147 return AVERROR(EINVAL);
5149 #if FF_API_LAVF_AVCTX
5150 FF_DISABLE_DEPRECATION_WARNINGS
5151 if (type != st->codecpar->codec_type
5152 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5154 FF_ENABLE_DEPRECATION_WARNINGS
5156 if (type != st->codecpar->codec_type)
5159 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5161 } else if (*spec == 'p' && *(spec + 1) == ':') {
5166 prog_id = strtol(spec, &endptr, 0);
5167 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5168 if (spec == endptr || (*endptr && *endptr++ != ':'))
5169 return AVERROR(EINVAL);
5172 for (i = 0; i < s->nb_programs; i++) {
5173 if (s->programs[i]->id != prog_id)
5176 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5177 if (st->index == s->programs[i]->stream_index[j]) {
5180 *p = s->programs[i];
5189 } else if (*spec == '#' ||
5190 (*spec == 'i' && *(spec + 1) == ':')) {
5193 spec += 1 + (*spec == 'i');
5194 stream_id = strtol(spec, &endptr, 0);
5195 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5196 return AVERROR(EINVAL);
5197 return match && (stream_id == st->id);
5198 } else if (*spec == 'm' && *(spec + 1) == ':') {
5199 AVDictionaryEntry *tag;
5205 val = strchr(spec, ':');
5207 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5209 return AVERROR(ENOMEM);
5211 tag = av_dict_get(st->metadata, key, NULL, 0);
5213 if (!val || !strcmp(tag->value, val + 1))
5222 return match && ret;
5223 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5224 AVCodecParameters *par = st->codecpar;
5225 #if FF_API_LAVF_AVCTX
5226 FF_DISABLE_DEPRECATION_WARNINGS
5227 AVCodecContext *codec = st->codec;
5228 FF_ENABLE_DEPRECATION_WARNINGS
5231 switch (par->codec_type) {
5232 case AVMEDIA_TYPE_AUDIO:
5233 val = par->sample_rate && par->channels;
5234 #if FF_API_LAVF_AVCTX
5235 val = val || (codec->sample_rate && codec->channels);
5237 if (par->format == AV_SAMPLE_FMT_NONE
5238 #if FF_API_LAVF_AVCTX
5239 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5244 case AVMEDIA_TYPE_VIDEO:
5245 val = par->width && par->height;
5246 #if FF_API_LAVF_AVCTX
5247 val = val || (codec->width && codec->height);
5249 if (par->format == AV_PIX_FMT_NONE
5250 #if FF_API_LAVF_AVCTX
5251 && codec->pix_fmt == AV_PIX_FMT_NONE
5256 case AVMEDIA_TYPE_UNKNOWN:
5263 #if FF_API_LAVF_AVCTX
5264 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5266 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5269 return AVERROR(EINVAL);
5277 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5282 const char *indexptr = NULL;
5283 AVProgram *p = NULL;
5286 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5293 index = strtol(indexptr, &endptr, 0);
5294 if (*endptr) { /* We can't have anything after the requested index. */
5295 ret = AVERROR(EINVAL);
5299 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5300 if (spec == indexptr)
5301 return (index == st->index);
5303 /* If we requested a matching stream index, we have to ensure st is that. */
5304 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5305 for (int i = 0; i < nb_streams && index >= 0; i++) {
5306 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5307 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5310 if (ret > 0 && index-- == 0 && st == candidate)
5316 if (ret == AVERROR(EINVAL))
5317 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5321 int ff_generate_avci_extradata(AVStream *st)
5323 static const uint8_t avci100_1080p_extradata[] = {
5325 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5326 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5327 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5328 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5329 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5330 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5331 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5332 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5333 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5335 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5338 static const uint8_t avci100_1080i_extradata[] = {
5340 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5341 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5342 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5343 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5344 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5345 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5346 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5347 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5348 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5349 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5350 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5352 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5355 static const uint8_t avci50_1080p_extradata[] = {
5357 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5358 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5359 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5360 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5361 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5362 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5363 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5364 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5365 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5367 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5370 static const uint8_t avci50_1080i_extradata[] = {
5372 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5373 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5374 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5375 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5376 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5377 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5378 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5379 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5380 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5381 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5382 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5384 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5387 static const uint8_t avci100_720p_extradata[] = {
5389 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5390 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5391 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5392 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5393 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5394 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5395 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5396 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5397 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5398 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5400 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5403 static const uint8_t avci50_720p_extradata[] = {
5405 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5406 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5407 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5408 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5409 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5410 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5411 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5412 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5413 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5415 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5419 const uint8_t *data = NULL;
5422 if (st->codecpar->width == 1920) {
5423 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5424 data = avci100_1080p_extradata;
5425 size = sizeof(avci100_1080p_extradata);
5427 data = avci100_1080i_extradata;
5428 size = sizeof(avci100_1080i_extradata);
5430 } else if (st->codecpar->width == 1440) {
5431 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5432 data = avci50_1080p_extradata;
5433 size = sizeof(avci50_1080p_extradata);
5435 data = avci50_1080i_extradata;
5436 size = sizeof(avci50_1080i_extradata);
5438 } else if (st->codecpar->width == 1280) {
5439 data = avci100_720p_extradata;
5440 size = sizeof(avci100_720p_extradata);
5441 } else if (st->codecpar->width == 960) {
5442 data = avci50_720p_extradata;
5443 size = sizeof(avci50_720p_extradata);
5449 av_freep(&st->codecpar->extradata);
5450 if (ff_alloc_extradata(st->codecpar, size))
5451 return AVERROR(ENOMEM);
5452 memcpy(st->codecpar->extradata, data, size);
5457 uint8_t *av_stream_get_side_data(const AVStream *st,
5458 enum AVPacketSideDataType type, int *size)
5462 for (i = 0; i < st->nb_side_data; i++) {
5463 if (st->side_data[i].type == type) {
5465 *size = st->side_data[i].size;
5466 return st->side_data[i].data;
5472 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5473 uint8_t *data, size_t size)
5475 AVPacketSideData *sd, *tmp;
5478 for (i = 0; i < st->nb_side_data; i++) {
5479 sd = &st->side_data[i];
5481 if (sd->type == type) {
5482 av_freep(&sd->data);
5489 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5490 return AVERROR(ERANGE);
5492 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5494 return AVERROR(ENOMEM);
5497 st->side_data = tmp;
5500 sd = &st->side_data[st->nb_side_data - 1];
5508 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5512 uint8_t *data = av_malloc(size);
5517 ret = av_stream_add_side_data(st, type, data, size);
5526 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5529 const AVBitStreamFilter *bsf;
5531 AVCodecParameters *in_par;
5533 if (!(bsf = av_bsf_get_by_name(name))) {
5534 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5535 return AVERROR_BSF_NOT_FOUND;
5538 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5541 if (st->internal->nb_bsfcs) {
5542 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5543 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5545 in_par = st->codecpar;
5546 bsfc->time_base_in = st->time_base;
5549 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5554 if (args && bsfc->filter->priv_class) {
5555 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5556 const char * shorthand[2] = {NULL};
5559 shorthand[0] = opt->name;
5561 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5567 if ((ret = av_bsf_init(bsfc)) < 0) {
5572 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5577 av_log(NULL, AV_LOG_VERBOSE,
5578 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5579 name, args ? args : "");
5584 FF_DISABLE_DEPRECATION_WARNINGS
5585 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5586 AVBitStreamFilterContext *bsfc)
5590 AVPacket new_pkt = *pkt;
5591 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5592 &new_pkt.data, &new_pkt.size,
5593 pkt->data, pkt->size,
5594 pkt->flags & AV_PKT_FLAG_KEY);
5595 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5596 av_packet_unref(pkt);
5597 memset(pkt, 0, sizeof(*pkt));
5600 if(a == 0 && new_pkt.data != pkt->data) {
5601 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
5603 memcpy(t, new_pkt.data, new_pkt.size);
5604 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5609 a = AVERROR(ENOMEM);
5613 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5614 av_buffer_default_free, NULL, 0);
5616 pkt->side_data = NULL;
5617 pkt->side_data_elems = 0;
5618 av_packet_unref(pkt);
5620 av_freep(&new_pkt.data);
5621 a = AVERROR(ENOMEM);
5625 av_log(codec, AV_LOG_ERROR,
5626 "Failed to open bitstream filter %s for stream %d with codec %s",
5627 bsfc->filter->name, pkt->stream_index,
5628 codec->codec ? codec->codec->name : "copy");
5638 FF_ENABLE_DEPRECATION_WARNINGS
5641 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5644 return AVERROR(EINVAL);
5646 if (!(s->oformat->flags & AVFMT_NOFILE))
5647 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5651 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5654 s->io_close(s, *pb);
5658 int ff_is_http_proto(char *filename) {
5659 const char *proto = avio_find_protocol_name(filename);
5660 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5663 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5665 AVDictionaryEntry *entry;
5666 int64_t parsed_timestamp;
5668 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5669 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5670 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5673 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5680 int ff_standardize_creation_time(AVFormatContext *s)
5683 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5685 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5689 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5694 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5696 if (size != AVPALETTE_SIZE) {
5697 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5698 return AVERROR_INVALIDDATA;
5700 memcpy(palette, side_data, AVPALETTE_SIZE);
5704 if (ret == CONTAINS_PAL) {
5706 for (i = 0; i < AVPALETTE_COUNT; i++)
5707 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5714 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5719 ret = av_bprint_finalize(buf, &str);
5722 if (!av_bprint_is_complete(buf)) {
5724 return AVERROR(ENOMEM);
5727 par->extradata = str;
5728 /* Note: the string is NUL terminated (so extradata can be read as a
5729 * string), but the ending character is not accounted in the size (in
5730 * binary formats you are likely not supposed to mux that character). When
5731 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5733 par->extradata_size = buf->len;
5737 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5738 AVStream *ost, const AVStream *ist,
5739 enum AVTimebaseSource copy_tb)
5741 //TODO: use [io]st->internal->avctx
5742 const AVCodecContext *dec_ctx = ist->codec;
5743 AVCodecContext *enc_ctx = ost->codec;
5745 enc_ctx->time_base = ist->time_base;
5747 * Avi is a special case here because it supports variable fps but
5748 * having the fps and timebase differe significantly adds quite some
5751 if (!strcmp(ofmt->name, "avi")) {
5752 #if FF_API_R_FRAME_RATE
5753 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5754 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5755 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5756 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5757 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5758 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5759 enc_ctx->time_base.num = ist->r_frame_rate.den;
5760 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5761 enc_ctx->ticks_per_frame = 2;
5764 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5765 && av_q2d(ist->time_base) < 1.0/500
5766 || copy_tb == AVFMT_TBCF_DECODER) {
5767 enc_ctx->time_base = dec_ctx->time_base;
5768 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5769 enc_ctx->time_base.den *= 2;
5770 enc_ctx->ticks_per_frame = 2;
5772 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5773 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5774 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5775 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5776 && av_q2d(ist->time_base) < 1.0/500
5777 || copy_tb == AVFMT_TBCF_DECODER) {
5778 enc_ctx->time_base = dec_ctx->time_base;
5779 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5783 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5784 && dec_ctx->time_base.num < dec_ctx->time_base.den
5785 && dec_ctx->time_base.num > 0
5786 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5787 enc_ctx->time_base = dec_ctx->time_base;
5790 if (ost->avg_frame_rate.num)
5791 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5793 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5794 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5799 AVRational av_stream_get_codec_timebase(const AVStream *st)
5801 // See avformat_transfer_internal_stream_timing_info() TODO.
5802 #if FF_API_LAVF_AVCTX
5803 FF_DISABLE_DEPRECATION_WARNINGS
5804 return st->codec->time_base;
5805 FF_ENABLE_DEPRECATION_WARNINGS
5807 return st->internal->avctx->time_base;
5811 void ff_format_set_url(AVFormatContext *s, char *url)
5816 #if FF_API_FORMAT_FILENAME
5817 FF_DISABLE_DEPRECATION_WARNINGS
5818 av_strlcpy(s->filename, url, sizeof(s->filename));
5819 FF_ENABLE_DEPRECATION_WARNINGS