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;
841 st = s->streams[pkt->stream_index];
842 if (s->internal->raw_packet_buffer_remaining_size <= 0)
843 if ((err = probe_codec(s, st, NULL)) < 0)
845 if (st->request_probe <= 0) {
846 s->internal->raw_packet_buffer = pktl->next;
847 s->internal->raw_packet_buffer_remaining_size += pkt->size;
856 ret = s->iformat->read_packet(s, pkt);
858 /* Some demuxers return FFERROR_REDO when they consume
859 data and discard it (ignored streams, junk, extradata).
860 We must re-call the demuxer to get the real packet. */
861 if (ret == FFERROR_REDO)
863 if (!pktl || ret == AVERROR(EAGAIN))
865 for (i = 0; i < s->nb_streams; i++) {
867 if (st->probe_packets || st->request_probe > 0)
868 if ((err = probe_codec(s, st, NULL)) < 0)
870 av_assert0(st->request_probe <= 0);
875 err = av_packet_make_refcounted(pkt);
879 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
880 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
881 av_log(s, AV_LOG_WARNING,
882 "Dropped corrupted packet (stream = %d)\n",
884 av_packet_unref(pkt);
888 if (pkt->stream_index >= (unsigned)s->nb_streams) {
889 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
893 st = s->streams[pkt->stream_index];
895 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
896 // correct first time stamps to negative values
897 if (!is_relative(st->first_dts))
898 st->first_dts = wrap_timestamp(st, st->first_dts);
899 if (!is_relative(st->start_time))
900 st->start_time = wrap_timestamp(st, st->start_time);
901 if (!is_relative(st->cur_dts))
902 st->cur_dts = wrap_timestamp(st, st->cur_dts);
905 pkt->dts = wrap_timestamp(st, pkt->dts);
906 pkt->pts = wrap_timestamp(st, pkt->pts);
908 force_codec_ids(s, st);
910 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
911 if (s->use_wallclock_as_timestamps)
912 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
914 if (!pktl && st->request_probe <= 0)
917 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
918 &s->internal->raw_packet_buffer_end,
922 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
924 if ((err = probe_codec(s, st, pkt)) < 0)
930 /**********************************************************/
932 static int determinable_frame_size(AVCodecContext *avctx)
934 switch(avctx->codec_id) {
935 case AV_CODEC_ID_MP1:
936 case AV_CODEC_ID_MP2:
937 case AV_CODEC_ID_MP3:
938 case AV_CODEC_ID_CODEC2:
946 * Return the frame duration in seconds. Return 0 if not available.
948 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
949 AVCodecParserContext *pc, AVPacket *pkt)
951 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
952 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
953 int frame_size, sample_rate;
955 #if FF_API_LAVF_AVCTX
956 FF_DISABLE_DEPRECATION_WARNINGS
957 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
958 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
959 FF_ENABLE_DEPRECATION_WARNINGS
964 switch (st->codecpar->codec_type) {
965 case AVMEDIA_TYPE_VIDEO:
966 if (st->r_frame_rate.num && !pc && s->iformat) {
967 *pnum = st->r_frame_rate.den;
968 *pden = st->r_frame_rate.num;
969 } else if (st->time_base.num * 1000LL > st->time_base.den) {
970 *pnum = st->time_base.num;
971 *pden = st->time_base.den;
972 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
973 av_assert0(st->internal->avctx->ticks_per_frame);
974 av_reduce(pnum, pden,
976 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
979 if (pc && pc->repeat_pict) {
980 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
981 av_reduce(pnum, pden,
982 (*pnum) * (1LL + pc->repeat_pict),
986 /* If this codec can be interlaced or progressive then we need
987 * a parser to compute duration of a packet. Thus if we have
988 * no parser in such case leave duration undefined. */
989 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
993 case AVMEDIA_TYPE_AUDIO:
994 if (st->internal->avctx_inited) {
995 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
996 sample_rate = st->internal->avctx->sample_rate;
998 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
999 sample_rate = st->codecpar->sample_rate;
1001 if (frame_size <= 0 || sample_rate <= 0)
1004 *pden = sample_rate;
1011 static int is_intra_only(enum AVCodecID id)
1013 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1016 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1021 static int has_decode_delay_been_guessed(AVStream *st)
1023 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1024 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1026 #if CONFIG_H264_DECODER
1027 if (st->internal->avctx->has_b_frames &&
1028 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1031 if (st->internal->avctx->has_b_frames<3)
1032 return st->nb_decoded_frames >= 7;
1033 else if (st->internal->avctx->has_b_frames<4)
1034 return st->nb_decoded_frames >= 18;
1036 return st->nb_decoded_frames >= 20;
1039 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1043 if (pktl == s->internal->packet_buffer_end)
1044 return s->internal->parse_queue;
1048 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1049 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1050 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1053 int delay = st->internal->avctx->has_b_frames;
1056 if (dts == AV_NOPTS_VALUE) {
1057 int64_t best_score = INT64_MAX;
1058 for (i = 0; i<delay; i++) {
1059 if (st->pts_reorder_error_count[i]) {
1060 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1061 if (score < best_score) {
1063 dts = pts_buffer[i];
1068 for (i = 0; i<delay; i++) {
1069 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1070 int64_t diff = FFABS(pts_buffer[i] - dts)
1071 + (uint64_t)st->pts_reorder_error[i];
1072 diff = FFMAX(diff, st->pts_reorder_error[i]);
1073 st->pts_reorder_error[i] = diff;
1074 st->pts_reorder_error_count[i]++;
1075 if (st->pts_reorder_error_count[i] > 250) {
1076 st->pts_reorder_error[i] >>= 1;
1077 st->pts_reorder_error_count[i] >>= 1;
1084 if (dts == AV_NOPTS_VALUE)
1085 dts = pts_buffer[0];
1091 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1092 * of the packets in a window.
1094 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1095 AVPacketList *pkt_buffer)
1097 AVStream *st = s->streams[stream_index];
1098 int delay = st->internal->avctx->has_b_frames;
1101 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1103 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1104 pts_buffer[i] = AV_NOPTS_VALUE;
1106 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1107 if (pkt_buffer->pkt.stream_index != stream_index)
1110 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1111 pts_buffer[0] = pkt_buffer->pkt.pts;
1112 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1113 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1115 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1120 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1121 int64_t dts, int64_t pts, AVPacket *pkt)
1123 AVStream *st = s->streams[stream_index];
1124 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1125 AVPacketList *pktl_it;
1129 if (st->first_dts != AV_NOPTS_VALUE ||
1130 dts == AV_NOPTS_VALUE ||
1131 st->cur_dts == AV_NOPTS_VALUE ||
1132 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1136 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1138 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1140 if (is_relative(pts))
1143 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1144 if (pktl_it->pkt.stream_index != stream_index)
1146 if (is_relative(pktl_it->pkt.pts))
1147 pktl_it->pkt.pts += shift;
1149 if (is_relative(pktl_it->pkt.dts))
1150 pktl_it->pkt.dts += shift;
1152 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1153 st->start_time = pktl_it->pkt.pts;
1154 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1155 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1159 if (has_decode_delay_been_guessed(st)) {
1160 update_dts_from_pts(s, stream_index, pktl);
1163 if (st->start_time == AV_NOPTS_VALUE) {
1164 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1165 st->start_time = pts;
1167 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1168 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1172 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1173 int stream_index, int duration)
1175 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1176 int64_t cur_dts = RELATIVE_TS_BASE;
1178 if (st->first_dts != AV_NOPTS_VALUE) {
1179 if (st->update_initial_durations_done)
1181 st->update_initial_durations_done = 1;
1182 cur_dts = st->first_dts;
1183 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1184 if (pktl->pkt.stream_index == stream_index) {
1185 if (pktl->pkt.pts != pktl->pkt.dts ||
1186 pktl->pkt.dts != AV_NOPTS_VALUE ||
1189 cur_dts -= duration;
1192 if (pktl && pktl->pkt.dts != st->first_dts) {
1193 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1194 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1198 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1201 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1202 st->first_dts = cur_dts;
1203 } else if (st->cur_dts != RELATIVE_TS_BASE)
1206 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1207 if (pktl->pkt.stream_index != stream_index)
1209 if ((pktl->pkt.pts == pktl->pkt.dts ||
1210 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1211 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1212 pktl->pkt.dts == st->first_dts ||
1213 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1214 !pktl->pkt.duration) {
1215 pktl->pkt.dts = cur_dts;
1216 if (!st->internal->avctx->has_b_frames)
1217 pktl->pkt.pts = cur_dts;
1218 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1219 pktl->pkt.duration = duration;
1222 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1225 st->cur_dts = cur_dts;
1228 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1229 AVCodecParserContext *pc, AVPacket *pkt,
1230 int64_t next_dts, int64_t next_pts)
1232 int num, den, presentation_delayed, delay, i;
1234 AVRational duration;
1235 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1236 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1238 if (s->flags & AVFMT_FLAG_NOFILLIN)
1241 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1242 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1243 if (st->last_dts_for_order_check <= pkt->dts) {
1246 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1247 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1249 st->last_dts_for_order_check);
1250 st->dts_misordered++;
1252 if (st->dts_ordered + st->dts_misordered > 250) {
1253 st->dts_ordered >>= 1;
1254 st->dts_misordered >>= 1;
1258 st->last_dts_for_order_check = pkt->dts;
1259 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1260 pkt->dts = AV_NOPTS_VALUE;
1263 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1264 pkt->dts = AV_NOPTS_VALUE;
1266 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1267 && !st->internal->avctx->has_b_frames)
1268 //FIXME Set low_delay = 0 when has_b_frames = 1
1269 st->internal->avctx->has_b_frames = 1;
1271 /* do we have a video B-frame ? */
1272 delay = st->internal->avctx->has_b_frames;
1273 presentation_delayed = 0;
1275 /* XXX: need has_b_frame, but cannot get it if the codec is
1276 * not initialized */
1278 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1279 presentation_delayed = 1;
1281 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1282 st->pts_wrap_bits < 63 &&
1283 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1284 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1285 pkt->dts -= 1LL << st->pts_wrap_bits;
1287 pkt->pts += 1LL << st->pts_wrap_bits;
1290 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1291 * We take the conservative approach and discard both.
1292 * Note: If this is misbehaving for an H.264 file, then possibly
1293 * presentation_delayed is not set correctly. */
1294 if (delay == 1 && pkt->dts == pkt->pts &&
1295 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1296 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1297 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1298 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1299 pkt->dts = AV_NOPTS_VALUE;
1302 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1303 if (pkt->duration == 0) {
1304 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1306 duration = (AVRational) {num, den};
1307 pkt->duration = av_rescale_rnd(1,
1308 num * (int64_t) st->time_base.den,
1309 den * (int64_t) st->time_base.num,
1314 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1315 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1317 /* Correct timestamps with byte offset if demuxers only have timestamps
1318 * on packet boundaries */
1319 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1320 /* this will estimate bitrate based on this frame's duration and size */
1321 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1322 if (pkt->pts != AV_NOPTS_VALUE)
1324 if (pkt->dts != AV_NOPTS_VALUE)
1328 /* This may be redundant, but it should not hurt. */
1329 if (pkt->dts != AV_NOPTS_VALUE &&
1330 pkt->pts != AV_NOPTS_VALUE &&
1331 pkt->pts > pkt->dts)
1332 presentation_delayed = 1;
1334 if (s->debug & FF_FDEBUG_TS)
1335 av_log(s, AV_LOG_DEBUG,
1336 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1337 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1338 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1340 /* Interpolate PTS and DTS if they are not present. We skip H264
1341 * currently because delay and has_b_frames are not reliably set. */
1342 if ((delay == 0 || (delay == 1 && pc)) &&
1344 if (presentation_delayed) {
1345 /* DTS = decompression timestamp */
1346 /* PTS = presentation timestamp */
1347 if (pkt->dts == AV_NOPTS_VALUE)
1348 pkt->dts = st->last_IP_pts;
1349 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1350 if (pkt->dts == AV_NOPTS_VALUE)
1351 pkt->dts = st->cur_dts;
1353 /* This is tricky: the dts must be incremented by the duration
1354 * of the frame we are displaying, i.e. the last I- or P-frame. */
1355 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1356 st->last_IP_duration = pkt->duration;
1357 if (pkt->dts != AV_NOPTS_VALUE)
1358 st->cur_dts = pkt->dts + st->last_IP_duration;
1359 if (pkt->dts != AV_NOPTS_VALUE &&
1360 pkt->pts == AV_NOPTS_VALUE &&
1361 st->last_IP_duration > 0 &&
1362 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1363 next_dts != next_pts &&
1364 next_pts != AV_NOPTS_VALUE)
1365 pkt->pts = next_dts;
1367 if ((uint64_t)pkt->duration <= INT32_MAX)
1368 st->last_IP_duration = pkt->duration;
1369 st->last_IP_pts = pkt->pts;
1370 /* Cannot compute PTS if not present (we can compute it only
1371 * by knowing the future. */
1372 } else if (pkt->pts != AV_NOPTS_VALUE ||
1373 pkt->dts != AV_NOPTS_VALUE ||
1376 /* presentation is not delayed : PTS and DTS are the same */
1377 if (pkt->pts == AV_NOPTS_VALUE)
1378 pkt->pts = pkt->dts;
1379 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1381 if (pkt->pts == AV_NOPTS_VALUE)
1382 pkt->pts = st->cur_dts;
1383 pkt->dts = pkt->pts;
1384 if (pkt->pts != AV_NOPTS_VALUE)
1385 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1389 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1390 st->pts_buffer[0] = pkt->pts;
1391 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1392 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1394 if(has_decode_delay_been_guessed(st))
1395 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1397 // We skipped it above so we try here.
1399 // This should happen on the first packet
1400 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1401 if (pkt->dts > st->cur_dts)
1402 st->cur_dts = pkt->dts;
1404 if (s->debug & FF_FDEBUG_TS)
1405 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1406 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1409 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1410 pkt->flags |= AV_PKT_FLAG_KEY;
1411 #if FF_API_CONVERGENCE_DURATION
1412 FF_DISABLE_DEPRECATION_WARNINGS
1414 pkt->convergence_duration = pc->convergence_duration;
1415 FF_ENABLE_DEPRECATION_WARNINGS
1419 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1421 AVPacketList *tmp = *pkt_buf;
1424 AVPacketList *pktl = tmp;
1426 av_packet_unref(&pktl->pkt);
1430 *pkt_buf_end = NULL;
1434 * Parse a packet, add all split parts to parse_queue.
1436 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1438 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1440 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1441 AVStream *st = s->streams[stream_index];
1442 uint8_t *data = pkt ? pkt->data : NULL;
1443 int size = pkt ? pkt->size : 0;
1444 int ret = 0, got_output = 0;
1447 av_init_packet(&flush_pkt);
1450 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1451 // preserve 0-size sync packets
1452 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1455 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1457 int64_t next_pts = pkt->pts;
1458 int64_t next_dts = pkt->dts;
1460 av_init_packet(&out_pkt);
1461 len = av_parser_parse2(st->parser, st->internal->avctx,
1462 &out_pkt.data, &out_pkt.size, data, size,
1463 pkt->pts, pkt->dts, pkt->pos);
1465 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1467 /* increment read pointer */
1471 got_output = !!out_pkt.size;
1476 if (pkt->buf && out_pkt.data == pkt->data) {
1477 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1478 * to data in it and not in the parser's internal buffer. */
1479 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1480 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1481 out_pkt.buf = av_buffer_ref(pkt->buf);
1483 ret = AVERROR(ENOMEM);
1487 ret = av_packet_make_refcounted(&out_pkt);
1492 if (pkt->side_data) {
1493 out_pkt.side_data = pkt->side_data;
1494 out_pkt.side_data_elems = pkt->side_data_elems;
1495 pkt->side_data = NULL;
1496 pkt->side_data_elems = 0;
1499 /* set the duration */
1500 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1501 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1502 if (st->internal->avctx->sample_rate > 0) {
1504 av_rescale_q_rnd(st->parser->duration,
1505 (AVRational) { 1, st->internal->avctx->sample_rate },
1511 out_pkt.stream_index = st->index;
1512 out_pkt.pts = st->parser->pts;
1513 out_pkt.dts = st->parser->dts;
1514 out_pkt.pos = st->parser->pos;
1515 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1517 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1518 out_pkt.pos = st->parser->frame_offset;
1520 if (st->parser->key_frame == 1 ||
1521 (st->parser->key_frame == -1 &&
1522 st->parser->pict_type == AV_PICTURE_TYPE_I))
1523 out_pkt.flags |= AV_PKT_FLAG_KEY;
1525 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1526 out_pkt.flags |= AV_PKT_FLAG_KEY;
1528 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1530 ret = ff_packet_list_put(&s->internal->parse_queue,
1531 &s->internal->parse_queue_end,
1534 av_packet_unref(&out_pkt);
1539 /* end of the stream => close and free the parser */
1540 if (pkt == &flush_pkt) {
1541 av_parser_close(st->parser);
1546 av_packet_unref(pkt);
1550 int ff_packet_list_get(AVPacketList **pkt_buffer,
1551 AVPacketList **pkt_buffer_end,
1555 av_assert0(*pkt_buffer);
1558 *pkt_buffer = pktl->next;
1560 *pkt_buffer_end = NULL;
1565 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1567 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1570 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1572 int ret = 0, i, got_packet = 0;
1573 AVDictionary *metadata = NULL;
1575 av_init_packet(pkt);
1577 while (!got_packet && !s->internal->parse_queue) {
1581 /* read next packet */
1582 ret = ff_read_packet(s, &cur_pkt);
1584 if (ret == AVERROR(EAGAIN))
1586 /* flush the parsers */
1587 for (i = 0; i < s->nb_streams; i++) {
1589 if (st->parser && st->need_parsing)
1590 parse_packet(s, NULL, st->index);
1592 /* all remaining packets are now in parse_queue =>
1593 * really terminate parsing */
1597 st = s->streams[cur_pkt.stream_index];
1599 /* update context if required */
1600 if (st->internal->need_context_update) {
1601 if (avcodec_is_open(st->internal->avctx)) {
1602 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1603 avcodec_close(st->internal->avctx);
1604 st->info->found_decoder = 0;
1607 /* close parser, because it depends on the codec */
1608 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1609 av_parser_close(st->parser);
1613 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1617 #if FF_API_LAVF_AVCTX
1618 FF_DISABLE_DEPRECATION_WARNINGS
1619 /* update deprecated public codec context */
1620 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1623 FF_ENABLE_DEPRECATION_WARNINGS
1626 st->internal->need_context_update = 0;
1629 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1630 cur_pkt.dts != AV_NOPTS_VALUE &&
1631 cur_pkt.pts < cur_pkt.dts) {
1632 av_log(s, AV_LOG_WARNING,
1633 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1634 cur_pkt.stream_index,
1635 av_ts2str(cur_pkt.pts),
1636 av_ts2str(cur_pkt.dts),
1639 if (s->debug & FF_FDEBUG_TS)
1640 av_log(s, AV_LOG_DEBUG,
1641 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1642 cur_pkt.stream_index,
1643 av_ts2str(cur_pkt.pts),
1644 av_ts2str(cur_pkt.dts),
1645 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1647 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1648 st->parser = av_parser_init(st->codecpar->codec_id);
1650 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1651 "%s, packets or times may be invalid.\n",
1652 avcodec_get_name(st->codecpar->codec_id));
1653 /* no parser available: just output the raw packets */
1654 st->need_parsing = AVSTREAM_PARSE_NONE;
1655 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1656 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1657 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1658 st->parser->flags |= PARSER_FLAG_ONCE;
1659 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1660 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1663 if (!st->need_parsing || !st->parser) {
1664 /* no parsing needed: we just output the packet as is */
1666 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1667 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1668 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1669 ff_reduce_index(s, st->index);
1670 av_add_index_entry(st, pkt->pos, pkt->dts,
1671 0, 0, AVINDEX_KEYFRAME);
1674 } else if (st->discard < AVDISCARD_ALL) {
1675 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1677 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1678 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1679 st->codecpar->channels = st->internal->avctx->channels;
1680 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1681 st->codecpar->codec_id = st->internal->avctx->codec_id;
1684 av_packet_unref(&cur_pkt);
1686 if (pkt->flags & AV_PKT_FLAG_KEY)
1687 st->skip_to_keyframe = 0;
1688 if (st->skip_to_keyframe) {
1689 av_packet_unref(&cur_pkt);
1697 if (!got_packet && s->internal->parse_queue)
1698 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1701 AVStream *st = s->streams[pkt->stream_index];
1702 int discard_padding = 0;
1703 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1704 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1705 int64_t sample = ts_to_samples(st, pts);
1706 int duration = ts_to_samples(st, pkt->duration);
1707 int64_t end_sample = sample + duration;
1708 if (duration > 0 && end_sample >= st->first_discard_sample &&
1709 sample < st->last_discard_sample)
1710 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1712 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1713 st->skip_samples = st->start_skip_samples;
1714 if (st->skip_samples || discard_padding) {
1715 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1717 AV_WL32(p, st->skip_samples);
1718 AV_WL32(p + 4, discard_padding);
1719 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1721 st->skip_samples = 0;
1724 if (st->inject_global_side_data) {
1725 for (i = 0; i < st->nb_side_data; i++) {
1726 AVPacketSideData *src_sd = &st->side_data[i];
1729 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1732 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1734 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1738 memcpy(dst_data, src_sd->data, src_sd->size);
1740 st->inject_global_side_data = 0;
1744 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1746 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1747 av_dict_copy(&s->metadata, metadata, 0);
1748 av_dict_free(&metadata);
1749 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1752 #if FF_API_LAVF_AVCTX
1753 update_stream_avctx(s);
1756 if (s->debug & FF_FDEBUG_TS)
1757 av_log(s, AV_LOG_DEBUG,
1758 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1759 "size=%d, duration=%"PRId64", flags=%d\n",
1761 av_ts2str(pkt->pts),
1762 av_ts2str(pkt->dts),
1763 pkt->size, pkt->duration, pkt->flags);
1765 /* A demuxer might have returned EOF because of an IO error, let's
1766 * propagate this back to the user. */
1767 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1773 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1775 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1781 ret = s->internal->packet_buffer
1782 ? ff_packet_list_get(&s->internal->packet_buffer,
1783 &s->internal->packet_buffer_end, pkt)
1784 : read_frame_internal(s, pkt);
1791 AVPacketList *pktl = s->internal->packet_buffer;
1794 AVPacket *next_pkt = &pktl->pkt;
1796 if (next_pkt->dts != AV_NOPTS_VALUE) {
1797 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1798 // last dts seen for this stream. if any of packets following
1799 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1800 int64_t last_dts = next_pkt->dts;
1801 av_assert2(wrap_bits <= 64);
1802 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1803 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1804 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1805 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1807 next_pkt->pts = pktl->pkt.dts;
1809 if (last_dts != AV_NOPTS_VALUE) {
1810 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1811 last_dts = pktl->pkt.dts;
1816 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1817 // Fixing the last reference frame had none pts issue (For MXF etc).
1818 // We only do this when
1820 // 2. we are not able to resolve a pts value for current packet.
1821 // 3. the packets for this stream at the end of the files had valid dts.
1822 next_pkt->pts = last_dts + next_pkt->duration;
1824 pktl = s->internal->packet_buffer;
1827 /* read packet from packet buffer, if there is data */
1828 st = s->streams[next_pkt->stream_index];
1829 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1830 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1831 ret = ff_packet_list_get(&s->internal->packet_buffer,
1832 &s->internal->packet_buffer_end, pkt);
1837 ret = read_frame_internal(s, pkt);
1839 if (pktl && ret != AVERROR(EAGAIN)) {
1846 ret = ff_packet_list_put(&s->internal->packet_buffer,
1847 &s->internal->packet_buffer_end,
1848 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1849 av_packet_unref(pkt);
1856 st = s->streams[pkt->stream_index];
1857 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1858 ff_reduce_index(s, st->index);
1859 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1862 if (is_relative(pkt->dts))
1863 pkt->dts -= RELATIVE_TS_BASE;
1864 if (is_relative(pkt->pts))
1865 pkt->pts -= RELATIVE_TS_BASE;
1870 /* XXX: suppress the packet queue */
1871 static void flush_packet_queue(AVFormatContext *s)
1875 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1876 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1877 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1879 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1882 /*******************************************************/
1885 int av_find_default_stream_index(AVFormatContext *s)
1889 int best_stream = 0;
1890 int best_score = INT_MIN;
1892 if (s->nb_streams <= 0)
1894 for (i = 0; i < s->nb_streams; i++) {
1897 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1898 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1900 if (st->codecpar->width && st->codecpar->height)
1904 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1905 if (st->codecpar->sample_rate)
1908 if (st->codec_info_nb_frames)
1911 if (st->discard != AVDISCARD_ALL)
1914 if (score > best_score) {
1922 /** Flush the frame reader. */
1923 void ff_read_frame_flush(AVFormatContext *s)
1928 flush_packet_queue(s);
1930 /* Reset read state for each stream. */
1931 for (i = 0; i < s->nb_streams; i++) {
1935 av_parser_close(st->parser);
1938 st->last_IP_pts = AV_NOPTS_VALUE;
1939 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1940 if (st->first_dts == AV_NOPTS_VALUE)
1941 st->cur_dts = RELATIVE_TS_BASE;
1943 /* We set the current DTS to an unspecified origin. */
1944 st->cur_dts = AV_NOPTS_VALUE;
1946 st->probe_packets = MAX_PROBE_PACKETS;
1948 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1949 st->pts_buffer[j] = AV_NOPTS_VALUE;
1951 if (s->internal->inject_global_side_data)
1952 st->inject_global_side_data = 1;
1954 st->skip_samples = 0;
1958 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1962 for (i = 0; i < s->nb_streams; i++) {
1963 AVStream *st = s->streams[i];
1966 av_rescale(timestamp,
1967 st->time_base.den * (int64_t) ref_st->time_base.num,
1968 st->time_base.num * (int64_t) ref_st->time_base.den);
1972 void ff_reduce_index(AVFormatContext *s, int stream_index)
1974 AVStream *st = s->streams[stream_index];
1975 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1977 if ((unsigned) st->nb_index_entries >= max_entries) {
1979 for (i = 0; 2 * i < st->nb_index_entries; i++)
1980 st->index_entries[i] = st->index_entries[2 * i];
1981 st->nb_index_entries = i;
1985 int ff_add_index_entry(AVIndexEntry **index_entries,
1986 int *nb_index_entries,
1987 unsigned int *index_entries_allocated_size,
1988 int64_t pos, int64_t timestamp,
1989 int size, int distance, int flags)
1991 AVIndexEntry *entries, *ie;
1994 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1997 if (timestamp == AV_NOPTS_VALUE)
1998 return AVERROR(EINVAL);
2000 if (size < 0 || size > 0x3FFFFFFF)
2001 return AVERROR(EINVAL);
2003 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2004 timestamp -= RELATIVE_TS_BASE;
2006 entries = av_fast_realloc(*index_entries,
2007 index_entries_allocated_size,
2008 (*nb_index_entries + 1) *
2009 sizeof(AVIndexEntry));
2013 *index_entries = entries;
2015 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2016 timestamp, AVSEEK_FLAG_ANY);
2019 index = (*nb_index_entries)++;
2020 ie = &entries[index];
2021 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2023 ie = &entries[index];
2024 if (ie->timestamp != timestamp) {
2025 if (ie->timestamp <= timestamp)
2027 memmove(entries + index + 1, entries + index,
2028 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2029 (*nb_index_entries)++;
2030 } else if (ie->pos == pos && distance < ie->min_distance)
2031 // do not reduce the distance
2032 distance = ie->min_distance;
2036 ie->timestamp = timestamp;
2037 ie->min_distance = distance;
2044 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2045 int size, int distance, int flags)
2047 timestamp = wrap_timestamp(st, timestamp);
2048 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2049 &st->index_entries_allocated_size, pos,
2050 timestamp, size, distance, flags);
2053 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2054 int64_t wanted_timestamp, int flags)
2062 // Optimize appending index entries at the end.
2063 if (b && entries[b - 1].timestamp < wanted_timestamp)
2069 // Search for the next non-discarded packet.
2070 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2072 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2078 timestamp = entries[m].timestamp;
2079 if (timestamp >= wanted_timestamp)
2081 if (timestamp <= wanted_timestamp)
2084 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2086 if (!(flags & AVSEEK_FLAG_ANY))
2087 while (m >= 0 && m < nb_entries &&
2088 !(entries[m].flags & AVINDEX_KEYFRAME))
2089 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2091 if (m == nb_entries)
2096 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2099 int64_t pos_delta = 0;
2101 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2102 const char *proto = avio_find_protocol_name(s->url);
2105 av_log(s, AV_LOG_INFO,
2106 "Protocol name not provided, cannot determine if input is local or "
2107 "a network protocol, buffers and access patterns cannot be configured "
2108 "optimally without knowing the protocol\n");
2111 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2114 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2115 AVStream *st1 = s->streams[ist1];
2116 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2117 AVStream *st2 = s->streams[ist2];
2123 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2124 AVIndexEntry *e1 = &st1->index_entries[i1];
2125 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2127 skip = FFMAX(skip, e1->size);
2128 for (; i2 < st2->nb_index_entries; i2++) {
2129 AVIndexEntry *e2 = &st2->index_entries[i2];
2130 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2131 if (e2_pts - e1_pts < time_tolerance)
2133 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2141 /* XXX This could be adjusted depending on protocol*/
2142 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2143 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2145 /* realloc the buffer and the original data will be retained */
2146 if (ffio_realloc_buf(s->pb, pos_delta)) {
2147 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2151 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2154 if (skip < (1<<23)) {
2155 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2159 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2161 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2162 wanted_timestamp, flags);
2165 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2166 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2168 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2169 if (stream_index >= 0)
2170 ts = wrap_timestamp(s->streams[stream_index], ts);
2174 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2175 int64_t target_ts, int flags)
2177 const AVInputFormat *avif = s->iformat;
2178 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2179 int64_t ts_min, ts_max, ts;
2184 if (stream_index < 0)
2187 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2190 ts_min = AV_NOPTS_VALUE;
2191 pos_limit = -1; // GCC falsely says it may be uninitialized.
2193 st = s->streams[stream_index];
2194 if (st->index_entries) {
2197 /* FIXME: Whole function must be checked for non-keyframe entries in
2198 * index case, especially read_timestamp(). */
2199 index = av_index_search_timestamp(st, target_ts,
2200 flags | AVSEEK_FLAG_BACKWARD);
2201 index = FFMAX(index, 0);
2202 e = &st->index_entries[index];
2204 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2206 ts_min = e->timestamp;
2207 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2208 pos_min, av_ts2str(ts_min));
2210 av_assert1(index == 0);
2213 index = av_index_search_timestamp(st, target_ts,
2214 flags & ~AVSEEK_FLAG_BACKWARD);
2215 av_assert0(index < st->nb_index_entries);
2217 e = &st->index_entries[index];
2218 av_assert1(e->timestamp >= target_ts);
2220 ts_max = e->timestamp;
2221 pos_limit = pos_max - e->min_distance;
2222 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2223 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2227 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2228 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2233 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2236 ff_read_frame_flush(s);
2237 ff_update_cur_dts(s, st, ts);
2242 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2243 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2245 int64_t step = 1024;
2246 int64_t limit, ts_max;
2247 int64_t filesize = avio_size(s->pb);
2248 int64_t pos_max = filesize - 1;
2251 pos_max = FFMAX(0, (pos_max) - step);
2252 ts_max = ff_read_timestamp(s, stream_index,
2253 &pos_max, limit, read_timestamp);
2255 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2256 if (ts_max == AV_NOPTS_VALUE)
2260 int64_t tmp_pos = pos_max + 1;
2261 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2262 &tmp_pos, INT64_MAX, read_timestamp);
2263 if (tmp_ts == AV_NOPTS_VALUE)
2265 av_assert0(tmp_pos > pos_max);
2268 if (tmp_pos >= filesize)
2280 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2281 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2282 int64_t ts_min, int64_t ts_max,
2283 int flags, int64_t *ts_ret,
2284 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2285 int64_t *, int64_t))
2292 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2294 if (ts_min == AV_NOPTS_VALUE) {
2295 pos_min = s->internal->data_offset;
2296 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2297 if (ts_min == AV_NOPTS_VALUE)
2301 if (ts_min >= target_ts) {
2306 if (ts_max == AV_NOPTS_VALUE) {
2307 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2309 pos_limit = pos_max;
2312 if (ts_max <= target_ts) {
2317 av_assert0(ts_min < ts_max);
2320 while (pos_min < pos_limit) {
2321 av_log(s, AV_LOG_TRACE,
2322 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2323 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2324 av_assert0(pos_limit <= pos_max);
2326 if (no_change == 0) {
2327 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2328 // interpolate position (better than dichotomy)
2329 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2331 pos_min - approximate_keyframe_distance;
2332 } else if (no_change == 1) {
2333 // bisection if interpolation did not change min / max pos last time
2334 pos = (pos_min + pos_limit) >> 1;
2336 /* linear search if bisection failed, can only happen if there
2337 * are very few or no keyframes between min/max */
2342 else if (pos > pos_limit)
2346 // May pass pos_limit instead of -1.
2347 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2352 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2353 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2354 pos_min, pos, pos_max,
2355 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2356 pos_limit, start_pos, no_change);
2357 if (ts == AV_NOPTS_VALUE) {
2358 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2361 if (target_ts <= ts) {
2362 pos_limit = start_pos - 1;
2366 if (target_ts >= ts) {
2372 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2373 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2376 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2378 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2379 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2380 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2386 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2387 int64_t pos, int flags)
2389 int64_t pos_min, pos_max;
2391 pos_min = s->internal->data_offset;
2392 pos_max = avio_size(s->pb) - 1;
2396 else if (pos > pos_max)
2399 avio_seek(s->pb, pos, SEEK_SET);
2401 s->io_repositioned = 1;
2406 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2407 int64_t timestamp, int flags)
2414 st = s->streams[stream_index];
2416 index = av_index_search_timestamp(st, timestamp, flags);
2418 if (index < 0 && st->nb_index_entries &&
2419 timestamp < st->index_entries[0].timestamp)
2422 if (index < 0 || index == st->nb_index_entries - 1) {
2426 if (st->nb_index_entries) {
2427 av_assert0(st->index_entries);
2428 ie = &st->index_entries[st->nb_index_entries - 1];
2429 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2431 ff_update_cur_dts(s, st, ie->timestamp);
2433 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2439 read_status = av_read_frame(s, &pkt);
2440 } while (read_status == AVERROR(EAGAIN));
2441 if (read_status < 0)
2443 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2444 if (pkt.flags & AV_PKT_FLAG_KEY) {
2445 av_packet_unref(&pkt);
2448 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2449 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);
2450 av_packet_unref(&pkt);
2454 av_packet_unref(&pkt);
2456 index = av_index_search_timestamp(st, timestamp, flags);
2461 ff_read_frame_flush(s);
2462 if (s->iformat->read_seek)
2463 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2465 ie = &st->index_entries[index];
2466 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2468 ff_update_cur_dts(s, st, ie->timestamp);
2473 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2474 int64_t timestamp, int flags)
2479 if (flags & AVSEEK_FLAG_BYTE) {
2480 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2482 ff_read_frame_flush(s);
2483 return seek_frame_byte(s, stream_index, timestamp, flags);
2486 if (stream_index < 0) {
2487 stream_index = av_find_default_stream_index(s);
2488 if (stream_index < 0)
2491 st = s->streams[stream_index];
2492 /* timestamp for default must be expressed in AV_TIME_BASE units */
2493 timestamp = av_rescale(timestamp, st->time_base.den,
2494 AV_TIME_BASE * (int64_t) st->time_base.num);
2497 /* first, we try the format specific seek */
2498 if (s->iformat->read_seek) {
2499 ff_read_frame_flush(s);
2500 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2506 if (s->iformat->read_timestamp &&
2507 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2508 ff_read_frame_flush(s);
2509 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2510 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2511 ff_read_frame_flush(s);
2512 return seek_frame_generic(s, stream_index, timestamp, flags);
2517 int av_seek_frame(AVFormatContext *s, int stream_index,
2518 int64_t timestamp, int flags)
2522 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2523 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2524 if ((flags & AVSEEK_FLAG_BACKWARD))
2528 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2529 flags & ~AVSEEK_FLAG_BACKWARD);
2532 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2535 ret = avformat_queue_attached_pictures(s);
2540 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2541 int64_t ts, int64_t max_ts, int flags)
2543 if (min_ts > ts || max_ts < ts)
2545 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2546 return AVERROR(EINVAL);
2549 flags |= AVSEEK_FLAG_ANY;
2550 flags &= ~AVSEEK_FLAG_BACKWARD;
2552 if (s->iformat->read_seek2) {
2554 ff_read_frame_flush(s);
2556 if (stream_index == -1 && s->nb_streams == 1) {
2557 AVRational time_base = s->streams[0]->time_base;
2558 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2559 min_ts = av_rescale_rnd(min_ts, time_base.den,
2560 time_base.num * (int64_t)AV_TIME_BASE,
2561 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2562 max_ts = av_rescale_rnd(max_ts, time_base.den,
2563 time_base.num * (int64_t)AV_TIME_BASE,
2564 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2568 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2572 ret = avformat_queue_attached_pictures(s);
2576 if (s->iformat->read_timestamp) {
2577 // try to seek via read_timestamp()
2580 // Fall back on old API if new is not implemented but old is.
2581 // Note the old API has somewhat different semantics.
2582 if (s->iformat->read_seek || 1) {
2583 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2584 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2585 if (ret<0 && ts != min_ts && max_ts != ts) {
2586 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2588 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2593 // try some generic seek like seek_frame_generic() but with new ts semantics
2594 return -1; //unreachable
2597 int avformat_flush(AVFormatContext *s)
2599 ff_read_frame_flush(s);
2603 /*******************************************************/
2606 * Return TRUE if the stream has accurate duration in any stream.
2608 * @return TRUE if the stream has accurate duration for at least one component.
2610 static int has_duration(AVFormatContext *ic)
2615 for (i = 0; i < ic->nb_streams; i++) {
2616 st = ic->streams[i];
2617 if (st->duration != AV_NOPTS_VALUE)
2620 if (ic->duration != AV_NOPTS_VALUE)
2626 * Estimate the stream timings from the one of each components.
2628 * Also computes the global bitrate if possible.
2630 static void update_stream_timings(AVFormatContext *ic)
2632 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2633 int64_t duration, duration1, duration_text, filesize;
2637 start_time = INT64_MAX;
2638 start_time_text = INT64_MAX;
2639 end_time = INT64_MIN;
2640 end_time_text = INT64_MIN;
2641 duration = INT64_MIN;
2642 duration_text = INT64_MIN;
2644 for (i = 0; i < ic->nb_streams; i++) {
2645 AVStream *st = ic->streams[i];
2646 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2647 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2648 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2649 start_time1 = av_rescale_q(st->start_time, st->time_base,
2652 start_time_text = FFMIN(start_time_text, start_time1);
2654 start_time = FFMIN(start_time, start_time1);
2655 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2657 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2658 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2659 end_time1 += start_time1;
2661 end_time_text = FFMAX(end_time_text, end_time1);
2663 end_time = FFMAX(end_time, end_time1);
2665 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2666 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2667 p->start_time = start_time1;
2668 if (p->end_time < end_time1)
2669 p->end_time = end_time1;
2672 if (st->duration != AV_NOPTS_VALUE) {
2673 duration1 = av_rescale_q(st->duration, st->time_base,
2676 duration_text = FFMAX(duration_text, duration1);
2678 duration = FFMAX(duration, duration1);
2681 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2682 start_time = start_time_text;
2683 else if (start_time > start_time_text)
2684 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2686 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2687 end_time = end_time_text;
2688 else if (end_time < end_time_text)
2689 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2691 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2692 duration = duration_text;
2693 else if (duration < duration_text)
2694 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2696 if (start_time != INT64_MAX) {
2697 ic->start_time = start_time;
2698 if (end_time != INT64_MIN) {
2699 if (ic->nb_programs > 1) {
2700 for (i = 0; i < ic->nb_programs; i++) {
2701 p = ic->programs[i];
2702 if (p->start_time != AV_NOPTS_VALUE &&
2703 p->end_time > p->start_time &&
2704 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2705 duration = FFMAX(duration, p->end_time - p->start_time);
2707 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2708 duration = FFMAX(duration, end_time - start_time);
2712 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2713 ic->duration = duration;
2715 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2716 /* compute the bitrate */
2717 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2718 (double) ic->duration;
2719 if (bitrate >= 0 && bitrate <= INT64_MAX)
2720 ic->bit_rate = bitrate;
2724 static void fill_all_stream_timings(AVFormatContext *ic)
2729 update_stream_timings(ic);
2730 for (i = 0; i < ic->nb_streams; i++) {
2731 st = ic->streams[i];
2732 if (st->start_time == AV_NOPTS_VALUE) {
2733 if (ic->start_time != AV_NOPTS_VALUE)
2734 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2736 if (ic->duration != AV_NOPTS_VALUE)
2737 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2743 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2745 int64_t filesize, duration;
2746 int i, show_warning = 0;
2749 /* if bit_rate is already set, we believe it */
2750 if (ic->bit_rate <= 0) {
2751 int64_t bit_rate = 0;
2752 for (i = 0; i < ic->nb_streams; i++) {
2753 st = ic->streams[i];
2754 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2755 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2756 if (st->codecpar->bit_rate > 0) {
2757 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2761 bit_rate += st->codecpar->bit_rate;
2762 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2763 // If we have a videostream with packets but without a bitrate
2764 // then consider the sum not known
2769 ic->bit_rate = bit_rate;
2772 /* if duration is already set, we believe it */
2773 if (ic->duration == AV_NOPTS_VALUE &&
2774 ic->bit_rate != 0) {
2775 filesize = ic->pb ? avio_size(ic->pb) : 0;
2776 if (filesize > ic->internal->data_offset) {
2777 filesize -= ic->internal->data_offset;
2778 for (i = 0; i < ic->nb_streams; i++) {
2779 st = ic->streams[i];
2780 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2781 && st->duration == AV_NOPTS_VALUE) {
2782 duration = av_rescale(8 * filesize, st->time_base.den,
2784 (int64_t) st->time_base.num);
2785 st->duration = duration;
2792 av_log(ic, AV_LOG_WARNING,
2793 "Estimating duration from bitrate, this may be inaccurate\n");
2796 #define DURATION_MAX_READ_SIZE 250000LL
2797 #define DURATION_MAX_RETRY 6
2799 /* only usable for MPEG-PS streams */
2800 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2802 AVPacket pkt1, *pkt = &pkt1;
2804 int num, den, read_size, i, ret;
2805 int found_duration = 0;
2807 int64_t filesize, offset, duration;
2810 /* flush packet queue */
2811 flush_packet_queue(ic);
2813 for (i = 0; i < ic->nb_streams; i++) {
2814 st = ic->streams[i];
2815 if (st->start_time == AV_NOPTS_VALUE &&
2816 st->first_dts == AV_NOPTS_VALUE &&
2817 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2818 av_log(ic, AV_LOG_WARNING,
2819 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2822 av_parser_close(st->parser);
2827 if (ic->skip_estimate_duration_from_pts) {
2828 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2829 goto skip_duration_calc;
2832 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2833 /* estimate the end time (duration) */
2834 /* XXX: may need to support wrapping */
2835 filesize = ic->pb ? avio_size(ic->pb) : 0;
2837 is_end = found_duration;
2838 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2842 avio_seek(ic->pb, offset, SEEK_SET);
2845 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2849 ret = ff_read_packet(ic, pkt);
2850 } while (ret == AVERROR(EAGAIN));
2853 read_size += pkt->size;
2854 st = ic->streams[pkt->stream_index];
2855 if (pkt->pts != AV_NOPTS_VALUE &&
2856 (st->start_time != AV_NOPTS_VALUE ||
2857 st->first_dts != AV_NOPTS_VALUE)) {
2858 if (pkt->duration == 0) {
2859 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2861 pkt->duration = av_rescale_rnd(1,
2862 num * (int64_t) st->time_base.den,
2863 den * (int64_t) st->time_base.num,
2867 duration = pkt->pts + pkt->duration;
2869 if (st->start_time != AV_NOPTS_VALUE)
2870 duration -= st->start_time;
2872 duration -= st->first_dts;
2874 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2875 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2876 st->duration = duration;
2877 st->info->last_duration = duration;
2880 av_packet_unref(pkt);
2883 /* check if all audio/video streams have valid duration */
2886 for (i = 0; i < ic->nb_streams; i++) {
2887 st = ic->streams[i];
2888 switch (st->codecpar->codec_type) {
2889 case AVMEDIA_TYPE_VIDEO:
2890 case AVMEDIA_TYPE_AUDIO:
2891 if (st->duration == AV_NOPTS_VALUE)
2898 ++retry <= DURATION_MAX_RETRY);
2900 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2902 /* warn about audio/video streams which duration could not be estimated */
2903 for (i = 0; i < ic->nb_streams; i++) {
2904 st = ic->streams[i];
2905 if (st->duration == AV_NOPTS_VALUE) {
2906 switch (st->codecpar->codec_type) {
2907 case AVMEDIA_TYPE_VIDEO:
2908 case AVMEDIA_TYPE_AUDIO:
2909 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2910 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2912 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2917 fill_all_stream_timings(ic);
2919 avio_seek(ic->pb, old_offset, SEEK_SET);
2920 for (i = 0; i < ic->nb_streams; i++) {
2923 st = ic->streams[i];
2924 st->cur_dts = st->first_dts;
2925 st->last_IP_pts = AV_NOPTS_VALUE;
2926 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2927 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2928 st->pts_buffer[j] = AV_NOPTS_VALUE;
2932 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2936 /* get the file size, if possible */
2937 if (ic->iformat->flags & AVFMT_NOFILE) {
2940 file_size = avio_size(ic->pb);
2941 file_size = FFMAX(0, file_size);
2944 if ((!strcmp(ic->iformat->name, "mpeg") ||
2945 !strcmp(ic->iformat->name, "mpegts")) &&
2946 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2947 /* get accurate estimate from the PTSes */
2948 estimate_timings_from_pts(ic, old_offset);
2949 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2950 } else if (has_duration(ic)) {
2951 /* at least one component has timings - we use them for all
2953 fill_all_stream_timings(ic);
2954 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2956 /* less precise: use bitrate info */
2957 estimate_timings_from_bit_rate(ic);
2958 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2960 update_stream_timings(ic);
2964 AVStream av_unused *st;
2965 for (i = 0; i < ic->nb_streams; i++) {
2966 st = ic->streams[i];
2967 if (st->time_base.den)
2968 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2969 (double) st->start_time * av_q2d(st->time_base),
2970 (double) st->duration * av_q2d(st->time_base));
2972 av_log(ic, AV_LOG_TRACE,
2973 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2974 (double) ic->start_time / AV_TIME_BASE,
2975 (double) ic->duration / AV_TIME_BASE,
2976 (int64_t)ic->bit_rate / 1000);
2980 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2982 AVCodecContext *avctx = st->internal->avctx;
2984 #define FAIL(errmsg) do { \
2986 *errmsg_ptr = errmsg; \
2990 if ( avctx->codec_id == AV_CODEC_ID_NONE
2991 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2992 FAIL("unknown codec");
2993 switch (avctx->codec_type) {
2994 case AVMEDIA_TYPE_AUDIO:
2995 if (!avctx->frame_size && determinable_frame_size(avctx))
2996 FAIL("unspecified frame size");
2997 if (st->info->found_decoder >= 0 &&
2998 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2999 FAIL("unspecified sample format");
3000 if (!avctx->sample_rate)
3001 FAIL("unspecified sample rate");
3002 if (!avctx->channels)
3003 FAIL("unspecified number of channels");
3004 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3005 FAIL("no decodable DTS frames");
3007 case AVMEDIA_TYPE_VIDEO:
3009 FAIL("unspecified size");
3010 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3011 FAIL("unspecified pixel format");
3012 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3013 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3014 FAIL("no frame in rv30/40 and no sar");
3016 case AVMEDIA_TYPE_SUBTITLE:
3017 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3018 FAIL("unspecified size");
3020 case AVMEDIA_TYPE_DATA:
3021 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3027 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3028 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3029 AVDictionary **options)
3031 AVCodecContext *avctx = st->internal->avctx;
3032 const AVCodec *codec;
3033 int got_picture = 1, ret = 0;
3034 AVFrame *frame = av_frame_alloc();
3035 AVSubtitle subtitle;
3036 AVPacket pkt = *avpkt;
3037 int do_skip_frame = 0;
3038 enum AVDiscard skip_frame;
3041 return AVERROR(ENOMEM);
3043 if (!avcodec_is_open(avctx) &&
3044 st->info->found_decoder <= 0 &&
3045 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3046 AVDictionary *thread_opt = NULL;
3048 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3051 st->info->found_decoder = -st->codecpar->codec_id;
3056 /* Force thread count to 1 since the H.264 decoder will not extract
3057 * SPS and PPS to extradata during multi-threaded decoding. */
3058 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3059 if (s->codec_whitelist)
3060 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3061 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3063 av_dict_free(&thread_opt);
3065 st->info->found_decoder = -avctx->codec_id;
3068 st->info->found_decoder = 1;
3069 } else if (!st->info->found_decoder)
3070 st->info->found_decoder = 1;
3072 if (st->info->found_decoder < 0) {
3077 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3079 skip_frame = avctx->skip_frame;
3080 avctx->skip_frame = AVDISCARD_ALL;
3083 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3085 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3086 (!st->codec_info_nb_frames &&
3087 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3089 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3090 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3091 ret = avcodec_send_packet(avctx, &pkt);
3092 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3096 ret = avcodec_receive_frame(avctx, frame);
3099 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3101 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3102 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3103 &got_picture, &pkt);
3109 st->nb_decoded_frames++;
3114 if (!pkt.data && !got_picture)
3118 if (do_skip_frame) {
3119 avctx->skip_frame = skip_frame;
3122 av_frame_free(&frame);
3126 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3128 while (tags->id != AV_CODEC_ID_NONE) {
3136 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3139 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3140 if (tag == tags[i].tag)
3142 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3143 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3145 return AV_CODEC_ID_NONE;
3148 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3150 if (bps <= 0 || bps > 64)
3151 return AV_CODEC_ID_NONE;
3156 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3158 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3160 return AV_CODEC_ID_NONE;
3165 if (sflags & (1 << (bps - 1))) {
3168 return AV_CODEC_ID_PCM_S8;
3170 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3172 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3174 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3176 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3178 return AV_CODEC_ID_NONE;
3183 return AV_CODEC_ID_PCM_U8;
3185 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3187 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3189 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3191 return AV_CODEC_ID_NONE;
3197 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3200 if (!av_codec_get_tag2(tags, id, &tag))
3205 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3209 for (i = 0; tags && tags[i]; i++) {
3210 const AVCodecTag *codec_tags = tags[i];
3211 while (codec_tags->id != AV_CODEC_ID_NONE) {
3212 if (codec_tags->id == id) {
3213 *tag = codec_tags->tag;
3222 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3225 for (i = 0; tags && tags[i]; i++) {
3226 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3227 if (id != AV_CODEC_ID_NONE)
3230 return AV_CODEC_ID_NONE;
3233 static void compute_chapters_end(AVFormatContext *s)
3236 int64_t max_time = 0;
3238 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3239 max_time = s->duration +
3240 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3242 for (i = 0; i < s->nb_chapters; i++)
3243 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3244 AVChapter *ch = s->chapters[i];
3245 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3249 for (j = 0; j < s->nb_chapters; j++) {
3250 AVChapter *ch1 = s->chapters[j];
3251 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3253 if (j != i && next_start > ch->start && next_start < end)
3256 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3260 static int get_std_framerate(int i)
3263 return (i + 1) * 1001;
3267 return (i + 31) * 1001 * 12;
3271 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3275 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3278 /* Is the time base unreliable?
3279 * This is a heuristic to balance between quick acceptance of the values in
3280 * the headers vs. some extra checks.
3281 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3282 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3283 * And there are "variable" fps files this needs to detect as well. */
3284 static int tb_unreliable(AVCodecContext *c)
3286 if (c->time_base.den >= 101LL * c->time_base.num ||
3287 c->time_base.den < 5LL * c->time_base.num ||
3288 // c->codec_tag == AV_RL32("DIVX") ||
3289 // c->codec_tag == AV_RL32("XVID") ||
3290 c->codec_tag == AV_RL32("mp4v") ||
3291 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3292 c->codec_id == AV_CODEC_ID_GIF ||
3293 c->codec_id == AV_CODEC_ID_HEVC ||
3294 c->codec_id == AV_CODEC_ID_H264)
3299 int ff_alloc_extradata(AVCodecParameters *par, int size)
3301 av_freep(&par->extradata);
3302 par->extradata_size = 0;
3304 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3305 return AVERROR(EINVAL);
3307 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3308 if (!par->extradata)
3309 return AVERROR(ENOMEM);
3311 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3312 par->extradata_size = size;
3317 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3319 int ret = ff_alloc_extradata(par, size);
3322 ret = avio_read(pb, par->extradata, size);
3324 av_freep(&par->extradata);
3325 par->extradata_size = 0;
3326 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3327 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3333 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3336 int64_t last = st->info->last_dts;
3338 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3339 && ts - (uint64_t)last < INT64_MAX) {
3340 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3341 int64_t duration = ts - last;
3343 if (!st->info->duration_error)
3344 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3345 if (!st->info->duration_error)
3346 return AVERROR(ENOMEM);
3348 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3349 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3350 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3351 if (st->info->duration_error[0][1][i] < 1e10) {
3352 int framerate = get_std_framerate(i);
3353 double sdts = dts*framerate/(1001*12);
3354 for (j= 0; j<2; j++) {
3355 int64_t ticks = llrint(sdts+j*0.5);
3356 double error= sdts - ticks + j*0.5;
3357 st->info->duration_error[j][0][i] += error;
3358 st->info->duration_error[j][1][i] += error*error;
3362 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3363 st->info->duration_count++;
3364 st->info->rfps_duration_sum += duration;
3367 if (st->info->duration_count % 10 == 0) {
3368 int n = st->info->duration_count;
3369 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3370 if (st->info->duration_error[0][1][i] < 1e10) {
3371 double a0 = st->info->duration_error[0][0][i] / n;
3372 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3373 double a1 = st->info->duration_error[1][0][i] / n;
3374 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3375 if (error0 > 0.04 && error1 > 0.04) {
3376 st->info->duration_error[0][1][i] = 2e10;
3377 st->info->duration_error[1][1][i] = 2e10;
3383 // ignore the first 4 values, they might have some random jitter
3384 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3385 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3387 if (ts != AV_NOPTS_VALUE)
3388 st->info->last_dts = ts;
3393 void ff_rfps_calculate(AVFormatContext *ic)
3397 for (i = 0; i < ic->nb_streams; i++) {
3398 AVStream *st = ic->streams[i];
3400 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3402 // the check for tb_unreliable() is not completely correct, since this is not about handling
3403 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3404 // ipmovie.c produces.
3405 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)
3406 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);
3407 if (st->info->duration_count>1 && !st->r_frame_rate.num
3408 && tb_unreliable(st->internal->avctx)) {
3410 double best_error= 0.01;
3411 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3413 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3416 if (st->info->codec_info_duration &&
3417 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3419 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3422 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3425 for (k= 0; k<2; k++) {
3426 int n = st->info->duration_count;
3427 double a= st->info->duration_error[k][0][j] / n;
3428 double error= st->info->duration_error[k][1][j]/n - a*a;
3430 if (error < best_error && best_error> 0.000000001) {
3432 num = get_std_framerate(j);
3435 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3438 // do not increase frame rate by more than 1 % in order to match a standard rate.
3439 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3440 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3442 if ( !st->avg_frame_rate.num
3443 && st->r_frame_rate.num && st->info->rfps_duration_sum
3444 && st->info->codec_info_duration <= 0
3445 && st->info->duration_count > 2
3446 && 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
3448 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3449 st->avg_frame_rate = st->r_frame_rate;
3452 av_freep(&st->info->duration_error);
3453 st->info->last_dts = AV_NOPTS_VALUE;
3454 st->info->duration_count = 0;
3455 st->info->rfps_duration_sum = 0;
3459 static int extract_extradata_check(AVStream *st)
3461 const AVBitStreamFilter *f;
3463 f = av_bsf_get_by_name("extract_extradata");
3468 const enum AVCodecID *ids;
3469 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3470 if (*ids == st->codecpar->codec_id)
3477 static int extract_extradata_init(AVStream *st)
3479 AVStreamInternal *sti = st->internal;
3480 const AVBitStreamFilter *f;
3483 f = av_bsf_get_by_name("extract_extradata");
3487 /* check that the codec id is supported */
3488 ret = extract_extradata_check(st);
3492 sti->extract_extradata.pkt = av_packet_alloc();
3493 if (!sti->extract_extradata.pkt)
3494 return AVERROR(ENOMEM);
3496 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3500 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3505 sti->extract_extradata.bsf->time_base_in = st->time_base;
3507 ret = av_bsf_init(sti->extract_extradata.bsf);
3512 sti->extract_extradata.inited = 1;
3516 av_bsf_free(&sti->extract_extradata.bsf);
3517 av_packet_free(&sti->extract_extradata.pkt);
3521 static int extract_extradata(AVStream *st, AVPacket *pkt)
3523 AVStreamInternal *sti = st->internal;
3527 if (!sti->extract_extradata.inited) {
3528 ret = extract_extradata_init(st);
3533 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3536 pkt_ref = sti->extract_extradata.pkt;
3537 ret = av_packet_ref(pkt_ref, pkt);
3541 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3543 av_packet_unref(pkt_ref);
3547 while (ret >= 0 && !sti->avctx->extradata) {
3551 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3553 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3558 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3562 av_assert0(!sti->avctx->extradata);
3563 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3564 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3565 if (!sti->avctx->extradata) {
3566 av_packet_unref(pkt_ref);
3567 return AVERROR(ENOMEM);
3569 memcpy(sti->avctx->extradata, extradata, extradata_size);
3570 sti->avctx->extradata_size = extradata_size;
3572 av_packet_unref(pkt_ref);
3578 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3580 int i, count = 0, ret = 0, j;
3583 AVCodecContext *avctx;
3584 AVPacket pkt1, *pkt;
3585 int64_t old_offset = avio_tell(ic->pb);
3586 // new streams might appear, no options for those
3587 int orig_nb_streams = ic->nb_streams;
3589 int64_t max_analyze_duration = ic->max_analyze_duration;
3590 int64_t max_stream_analyze_duration;
3591 int64_t max_subtitle_analyze_duration;
3592 int64_t probesize = ic->probesize;
3593 int eof_reached = 0;
3594 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3596 flush_codecs = probesize > 0;
3598 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3600 max_stream_analyze_duration = max_analyze_duration;
3601 max_subtitle_analyze_duration = max_analyze_duration;
3602 if (!max_analyze_duration) {
3603 max_stream_analyze_duration =
3604 max_analyze_duration = 5*AV_TIME_BASE;
3605 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3606 if (!strcmp(ic->iformat->name, "flv"))
3607 max_stream_analyze_duration = 90*AV_TIME_BASE;
3608 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3609 max_stream_analyze_duration = 7*AV_TIME_BASE;
3613 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3614 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3616 for (i = 0; i < ic->nb_streams; i++) {
3617 const AVCodec *codec;
3618 AVDictionary *thread_opt = NULL;
3619 st = ic->streams[i];
3620 avctx = st->internal->avctx;
3622 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3623 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3624 /* if (!st->time_base.num)
3626 if (!avctx->time_base.num)
3627 avctx->time_base = st->time_base;
3630 /* check if the caller has overridden the codec id */
3631 #if FF_API_LAVF_AVCTX
3632 FF_DISABLE_DEPRECATION_WARNINGS
3633 if (st->codec->codec_id != st->internal->orig_codec_id) {
3634 st->codecpar->codec_id = st->codec->codec_id;
3635 st->codecpar->codec_type = st->codec->codec_type;
3636 st->internal->orig_codec_id = st->codec->codec_id;
3638 FF_ENABLE_DEPRECATION_WARNINGS
3640 // only for the split stuff
3641 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3642 st->parser = av_parser_init(st->codecpar->codec_id);
3644 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3645 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3646 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3647 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3649 } else if (st->need_parsing) {
3650 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3651 "%s, packets or times may be invalid.\n",
3652 avcodec_get_name(st->codecpar->codec_id));
3656 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3657 st->internal->orig_codec_id = st->codecpar->codec_id;
3659 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3661 goto find_stream_info_err;
3662 if (st->request_probe <= 0)
3663 st->internal->avctx_inited = 1;
3665 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3667 /* Force thread count to 1 since the H.264 decoder will not extract
3668 * SPS and PPS to extradata during multi-threaded decoding. */
3669 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3671 if (ic->codec_whitelist)
3672 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3674 /* Ensure that subtitle_header is properly set. */
3675 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3676 && codec && !avctx->codec) {
3677 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3678 av_log(ic, AV_LOG_WARNING,
3679 "Failed to open codec in %s\n",__FUNCTION__);
3682 // Try to just open decoders, in case this is enough to get parameters.
3683 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3684 if (codec && !avctx->codec)
3685 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3686 av_log(ic, AV_LOG_WARNING,
3687 "Failed to open codec in %s\n",__FUNCTION__);
3690 av_dict_free(&thread_opt);
3693 for (i = 0; i < ic->nb_streams; i++) {
3694 #if FF_API_R_FRAME_RATE
3695 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3697 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3698 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3703 int analyzed_all_streams;
3704 if (ff_check_interrupt(&ic->interrupt_callback)) {
3706 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3710 /* check if one codec still needs to be handled */
3711 for (i = 0; i < ic->nb_streams; i++) {
3712 int fps_analyze_framecount = 20;
3715 st = ic->streams[i];
3716 if (!has_codec_parameters(st, NULL))
3718 /* If the timebase is coarse (like the usual millisecond precision
3719 * of mkv), we need to analyze more frames to reliably arrive at
3720 * the correct fps. */
3721 if (av_q2d(st->time_base) > 0.0005)
3722 fps_analyze_framecount *= 2;
3723 if (!tb_unreliable(st->internal->avctx))
3724 fps_analyze_framecount = 0;
3725 if (ic->fps_probe_size >= 0)
3726 fps_analyze_framecount = ic->fps_probe_size;
3727 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3728 fps_analyze_framecount = 0;
3729 /* variable fps and no guess at the real fps */
3730 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3731 st->info->codec_info_duration_fields/2 :
3732 st->info->duration_count;
3733 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3734 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3735 if (count < fps_analyze_framecount)
3738 // Look at the first 3 frames if there is evidence of frame delay
3739 // but the decoder delay is not set.
3740 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3742 if (!st->internal->avctx->extradata &&
3743 (!st->internal->extract_extradata.inited ||
3744 st->internal->extract_extradata.bsf) &&
3745 extract_extradata_check(st))
3747 if (st->first_dts == AV_NOPTS_VALUE &&
3748 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3749 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3750 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3751 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3754 analyzed_all_streams = 0;
3755 if (!missing_streams || !*missing_streams)
3756 if (i == ic->nb_streams) {
3757 analyzed_all_streams = 1;
3758 /* NOTE: If the format has no header, then we need to read some
3759 * packets to get most of the streams, so we cannot stop here. */
3760 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3761 /* If we found the info for all the codecs, we can stop. */
3763 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3768 /* We did not get all the codec info, but we read too much data. */
3769 if (read_size >= probesize) {
3771 av_log(ic, AV_LOG_DEBUG,
3772 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3773 for (i = 0; i < ic->nb_streams; i++)
3774 if (!ic->streams[i]->r_frame_rate.num &&
3775 ic->streams[i]->info->duration_count <= 1 &&
3776 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3777 strcmp(ic->iformat->name, "image2"))
3778 av_log(ic, AV_LOG_WARNING,
3779 "Stream #%d: not enough frames to estimate rate; "
3780 "consider increasing probesize\n", i);
3784 /* NOTE: A new stream can be added there if no header in file
3785 * (AVFMTCTX_NOHEADER). */
3786 ret = read_frame_internal(ic, &pkt1);
3787 if (ret == AVERROR(EAGAIN))
3798 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3799 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3800 &ic->internal->packet_buffer_end,
3803 goto find_stream_info_err;
3806 st = ic->streams[pkt->stream_index];
3807 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3808 read_size += pkt->size;
3810 avctx = st->internal->avctx;
3811 if (!st->internal->avctx_inited) {
3812 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3814 goto find_stream_info_err;
3815 st->internal->avctx_inited = 1;
3818 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3819 /* check for non-increasing dts */
3820 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3821 st->info->fps_last_dts >= pkt->dts) {
3822 av_log(ic, AV_LOG_DEBUG,
3823 "Non-increasing DTS in stream %d: packet %d with DTS "
3824 "%"PRId64", packet %d with DTS %"PRId64"\n",
3825 st->index, st->info->fps_last_dts_idx,
3826 st->info->fps_last_dts, st->codec_info_nb_frames,
3828 st->info->fps_first_dts =
3829 st->info->fps_last_dts = AV_NOPTS_VALUE;
3831 /* Check for a discontinuity in dts. If the difference in dts
3832 * is more than 1000 times the average packet duration in the
3833 * sequence, we treat it as a discontinuity. */
3834 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3835 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3836 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3837 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3838 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3839 av_log(ic, AV_LOG_WARNING,
3840 "DTS discontinuity in stream %d: packet %d with DTS "
3841 "%"PRId64", packet %d with DTS %"PRId64"\n",
3842 st->index, st->info->fps_last_dts_idx,
3843 st->info->fps_last_dts, st->codec_info_nb_frames,
3845 st->info->fps_first_dts =
3846 st->info->fps_last_dts = AV_NOPTS_VALUE;
3849 /* update stored dts values */
3850 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3851 st->info->fps_first_dts = pkt->dts;
3852 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3854 st->info->fps_last_dts = pkt->dts;
3855 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3857 if (st->codec_info_nb_frames>1) {
3861 if (st->time_base.den > 0)
3862 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3863 if (st->avg_frame_rate.num > 0)
3864 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3867 && st->codec_info_nb_frames>30
3868 && st->info->fps_first_dts != AV_NOPTS_VALUE
3869 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3870 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3872 if (analyzed_all_streams) limit = max_analyze_duration;
3873 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3874 else limit = max_stream_analyze_duration;
3877 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3879 t, pkt->stream_index);
3880 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3881 av_packet_unref(pkt);
3884 if (pkt->duration) {
3885 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3886 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3888 st->info->codec_info_duration += pkt->duration;
3889 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3892 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3893 #if FF_API_R_FRAME_RATE
3894 ff_rfps_add_frame(ic, st, pkt->dts);
3896 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3897 st->info->frame_delay_evidence = 1;
3899 if (!st->internal->avctx->extradata) {
3900 ret = extract_extradata(st, pkt);
3902 goto find_stream_info_err;
3905 /* If still no information, we try to open the codec and to
3906 * decompress the frame. We try to avoid that in most cases as
3907 * it takes longer and uses more memory. For MPEG-4, we need to
3908 * decompress for QuickTime.
3910 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3911 * least one frame of codec data, this makes sure the codec initializes
3912 * the channel configuration and does not only trust the values from
3914 try_decode_frame(ic, st, pkt,
3915 (options && i < orig_nb_streams) ? &options[i] : NULL);
3917 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3918 av_packet_unref(pkt);
3920 st->codec_info_nb_frames++;
3926 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3927 st = ic->streams[stream_index];
3928 avctx = st->internal->avctx;
3929 if (!has_codec_parameters(st, NULL)) {
3930 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3931 if (codec && !avctx->codec) {
3932 AVDictionary *opts = NULL;
3933 if (ic->codec_whitelist)
3934 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3935 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3936 av_log(ic, AV_LOG_WARNING,
3937 "Failed to open codec in %s\n",__FUNCTION__);
3938 av_dict_free(&opts);
3942 // EOF already reached while reading the stream above.
3943 // So continue with reoordering DTS with whatever delay we have.
3944 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3945 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3951 AVPacket empty_pkt = { 0 };
3953 av_init_packet(&empty_pkt);
3955 for (i = 0; i < ic->nb_streams; i++) {
3957 st = ic->streams[i];
3959 /* flush the decoders */
3960 if (st->info->found_decoder == 1) {
3962 err = try_decode_frame(ic, st, &empty_pkt,
3963 (options && i < orig_nb_streams)
3964 ? &options[i] : NULL);
3965 } while (err > 0 && !has_codec_parameters(st, NULL));
3968 av_log(ic, AV_LOG_INFO,
3969 "decoding for stream %d failed\n", st->index);
3975 ff_rfps_calculate(ic);
3977 for (i = 0; i < ic->nb_streams; i++) {
3978 st = ic->streams[i];
3979 avctx = st->internal->avctx;
3980 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3981 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3982 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3983 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3984 avctx->codec_tag= tag;
3987 /* estimate average framerate if not set by demuxer */
3988 if (st->info->codec_info_duration_fields &&
3989 !st->avg_frame_rate.num &&
3990 st->info->codec_info_duration) {
3992 double best_error = 0.01;
3993 AVRational codec_frame_rate = avctx->framerate;
3995 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3996 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3997 st->info->codec_info_duration < 0)
3999 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4000 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4001 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4003 /* Round guessed framerate to a "standard" framerate if it's
4004 * within 1% of the original estimate. */
4005 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4006 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4007 double error = fabs(av_q2d(st->avg_frame_rate) /
4008 av_q2d(std_fps) - 1);
4010 if (error < best_error) {
4012 best_fps = std_fps.num;
4015 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4016 error = fabs(av_q2d(codec_frame_rate) /
4017 av_q2d(std_fps) - 1);
4018 if (error < best_error) {
4020 best_fps = std_fps.num;
4025 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4026 best_fps, 12 * 1001, INT_MAX);
4029 if (!st->r_frame_rate.num) {
4030 if ( avctx->time_base.den * (int64_t) st->time_base.num
4031 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4032 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4033 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4035 st->r_frame_rate.num = st->time_base.den;
4036 st->r_frame_rate.den = st->time_base.num;
4039 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4040 AVRational hw_ratio = { avctx->height, avctx->width };
4041 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4044 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4045 if (!avctx->bits_per_coded_sample)
4046 avctx->bits_per_coded_sample =
4047 av_get_bits_per_sample(avctx->codec_id);
4048 // set stream disposition based on audio service type
4049 switch (avctx->audio_service_type) {
4050 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4051 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4053 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4054 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4056 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4057 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4059 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4060 st->disposition = AV_DISPOSITION_COMMENT;
4062 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4063 st->disposition = AV_DISPOSITION_KARAOKE;
4070 estimate_timings(ic, old_offset);
4072 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4074 if (ret >= 0 && ic->nb_streams)
4075 /* We could not have all the codec parameters before EOF. */
4077 for (i = 0; i < ic->nb_streams; i++) {
4079 st = ic->streams[i];
4081 /* if no packet was ever seen, update context now for has_codec_parameters */
4082 if (!st->internal->avctx_inited) {
4083 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4084 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4085 st->codecpar->format = st->internal->avctx->sample_fmt;
4086 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4088 goto find_stream_info_err;
4090 if (!has_codec_parameters(st, &errmsg)) {
4092 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4093 av_log(ic, AV_LOG_WARNING,
4094 "Could not find codec parameters for stream %d (%s): %s\n"
4095 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4102 compute_chapters_end(ic);
4104 /* update the stream parameters from the internal codec contexts */
4105 for (i = 0; i < ic->nb_streams; i++) {
4106 st = ic->streams[i];
4108 if (st->internal->avctx_inited) {
4109 int orig_w = st->codecpar->width;
4110 int orig_h = st->codecpar->height;
4111 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4113 goto find_stream_info_err;
4115 // The decoder might reduce the video size by the lowres factor.
4116 if (st->internal->avctx->lowres && orig_w) {
4117 st->codecpar->width = orig_w;
4118 st->codecpar->height = orig_h;
4123 #if FF_API_LAVF_AVCTX
4124 FF_DISABLE_DEPRECATION_WARNINGS
4125 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4127 goto find_stream_info_err;
4130 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4131 // by the lowres factor.
4132 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4133 st->codec->lowres = st->internal->avctx->lowres;
4134 st->codec->width = st->internal->avctx->width;
4135 st->codec->height = st->internal->avctx->height;
4139 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4140 st->codec->time_base = st->internal->avctx->time_base;
4141 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4143 st->codec->framerate = st->avg_frame_rate;
4145 if (st->internal->avctx->subtitle_header) {
4146 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4147 if (!st->codec->subtitle_header)
4148 goto find_stream_info_err;
4149 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4150 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4151 st->codec->subtitle_header_size);
4154 // Fields unavailable in AVCodecParameters
4155 st->codec->coded_width = st->internal->avctx->coded_width;
4156 st->codec->coded_height = st->internal->avctx->coded_height;
4157 st->codec->properties = st->internal->avctx->properties;
4158 FF_ENABLE_DEPRECATION_WARNINGS
4161 st->internal->avctx_inited = 0;
4164 find_stream_info_err:
4165 for (i = 0; i < ic->nb_streams; i++) {
4166 st = ic->streams[i];
4168 av_freep(&st->info->duration_error);
4169 avcodec_close(ic->streams[i]->internal->avctx);
4170 av_freep(&ic->streams[i]->info);
4171 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4172 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4175 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4176 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4180 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4184 for (i = 0; i < ic->nb_programs; i++) {
4185 if (ic->programs[i] == last) {
4189 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4190 if (ic->programs[i]->stream_index[j] == s)
4191 return ic->programs[i];
4197 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4198 int wanted_stream_nb, int related_stream,
4199 AVCodec **decoder_ret, int flags)
4201 int i, nb_streams = ic->nb_streams;
4202 int ret = AVERROR_STREAM_NOT_FOUND;
4203 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4204 int count, multiframe, disposition;
4205 int64_t best_bitrate = -1;
4207 unsigned *program = NULL;
4208 const AVCodec *decoder = NULL, *best_decoder = NULL;
4210 if (related_stream >= 0 && wanted_stream_nb < 0) {
4211 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4213 program = p->stream_index;
4214 nb_streams = p->nb_stream_indexes;
4217 for (i = 0; i < nb_streams; i++) {
4218 int real_stream_index = program ? program[i] : i;
4219 AVStream *st = ic->streams[real_stream_index];
4220 AVCodecParameters *par = st->codecpar;
4221 if (par->codec_type != type)
4223 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4225 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4228 decoder = find_decoder(ic, st, par->codec_id);
4231 ret = AVERROR_DECODER_NOT_FOUND;
4235 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4236 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4237 count = st->codec_info_nb_frames;
4238 bitrate = par->bit_rate;
4239 multiframe = FFMIN(5, count);
4240 if ((best_disposition > disposition) ||
4241 (best_disposition == disposition && best_multiframe > multiframe) ||
4242 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4243 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4245 best_disposition = disposition;
4247 best_bitrate = bitrate;
4248 best_multiframe = multiframe;
4249 ret = real_stream_index;
4250 best_decoder = decoder;
4251 if (program && i == nb_streams - 1 && ret < 0) {
4253 nb_streams = ic->nb_streams;
4254 /* no related stream found, try again with everything */
4259 *decoder_ret = (AVCodec*)best_decoder;
4263 /*******************************************************/
4265 int av_read_play(AVFormatContext *s)
4267 if (s->iformat->read_play)
4268 return s->iformat->read_play(s);
4270 return avio_pause(s->pb, 0);
4271 return AVERROR(ENOSYS);
4274 int av_read_pause(AVFormatContext *s)
4276 if (s->iformat->read_pause)
4277 return s->iformat->read_pause(s);
4279 return avio_pause(s->pb, 1);
4280 return AVERROR(ENOSYS);
4283 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4288 dst->time_base = src->time_base;
4289 dst->nb_frames = src->nb_frames;
4290 dst->disposition = src->disposition;
4291 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4292 dst->avg_frame_rate = src->avg_frame_rate;
4293 dst->r_frame_rate = src->r_frame_rate;
4295 av_dict_free(&dst->metadata);
4296 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4300 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4304 /* Free existing side data*/
4305 for (i = 0; i < dst->nb_side_data; i++)
4306 av_free(dst->side_data[i].data);
4307 av_freep(&dst->side_data);
4308 dst->nb_side_data = 0;
4310 /* Copy side data if present */
4311 if (src->nb_side_data) {
4312 dst->side_data = av_mallocz_array(src->nb_side_data,
4313 sizeof(AVPacketSideData));
4314 if (!dst->side_data)
4315 return AVERROR(ENOMEM);
4316 dst->nb_side_data = src->nb_side_data;
4318 for (i = 0; i < src->nb_side_data; i++) {
4319 uint8_t *data = av_memdup(src->side_data[i].data,
4320 src->side_data[i].size);
4322 return AVERROR(ENOMEM);
4323 dst->side_data[i].type = src->side_data[i].type;
4324 dst->side_data[i].size = src->side_data[i].size;
4325 dst->side_data[i].data = data;
4329 #if FF_API_LAVF_FFSERVER
4330 FF_DISABLE_DEPRECATION_WARNINGS
4331 av_freep(&dst->recommended_encoder_configuration);
4332 if (src->recommended_encoder_configuration) {
4333 const char *conf_str = src->recommended_encoder_configuration;
4334 dst->recommended_encoder_configuration = av_strdup(conf_str);
4335 if (!dst->recommended_encoder_configuration)
4336 return AVERROR(ENOMEM);
4338 FF_ENABLE_DEPRECATION_WARNINGS
4344 static void free_stream(AVStream **pst)
4346 AVStream *st = *pst;
4352 for (i = 0; i < st->nb_side_data; i++)
4353 av_freep(&st->side_data[i].data);
4354 av_freep(&st->side_data);
4357 av_parser_close(st->parser);
4359 if (st->attached_pic.data)
4360 av_packet_unref(&st->attached_pic);
4363 avcodec_free_context(&st->internal->avctx);
4364 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4365 av_bsf_free(&st->internal->bsfcs[i]);
4366 av_freep(&st->internal->bsfcs);
4368 av_freep(&st->internal->priv_pts);
4369 av_bsf_free(&st->internal->extract_extradata.bsf);
4370 av_packet_free(&st->internal->extract_extradata.pkt);
4372 av_freep(&st->internal);
4374 av_dict_free(&st->metadata);
4375 avcodec_parameters_free(&st->codecpar);
4376 av_freep(&st->probe_data.buf);
4377 av_freep(&st->index_entries);
4378 #if FF_API_LAVF_AVCTX
4379 FF_DISABLE_DEPRECATION_WARNINGS
4380 avcodec_free_context(&st->codec);
4381 FF_ENABLE_DEPRECATION_WARNINGS
4383 av_freep(&st->priv_data);
4385 av_freep(&st->info->duration_error);
4386 av_freep(&st->info);
4387 #if FF_API_LAVF_FFSERVER
4388 FF_DISABLE_DEPRECATION_WARNINGS
4389 av_freep(&st->recommended_encoder_configuration);
4390 FF_ENABLE_DEPRECATION_WARNINGS
4396 void ff_free_stream(AVFormatContext *s, AVStream *st)
4398 av_assert0(s->nb_streams>0);
4399 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4401 free_stream(&s->streams[ --s->nb_streams ]);
4404 void avformat_free_context(AVFormatContext *s)
4412 if (s->iformat && s->iformat->priv_class && s->priv_data)
4413 av_opt_free(s->priv_data);
4414 if (s->oformat && s->oformat->priv_class && s->priv_data)
4415 av_opt_free(s->priv_data);
4417 for (i = s->nb_streams - 1; i >= 0; i--)
4418 ff_free_stream(s, s->streams[i]);
4421 for (i = s->nb_programs - 1; i >= 0; i--) {
4422 av_dict_free(&s->programs[i]->metadata);
4423 av_freep(&s->programs[i]->stream_index);
4424 av_freep(&s->programs[i]);
4426 av_freep(&s->programs);
4427 av_freep(&s->priv_data);
4428 while (s->nb_chapters--) {
4429 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4430 av_freep(&s->chapters[s->nb_chapters]);
4432 av_freep(&s->chapters);
4433 av_dict_free(&s->metadata);
4434 av_dict_free(&s->internal->id3v2_meta);
4435 av_freep(&s->streams);
4436 flush_packet_queue(s);
4437 av_freep(&s->internal);
4442 void avformat_close_input(AVFormatContext **ps)
4453 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4454 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4457 flush_packet_queue(s);
4460 if (s->iformat->read_close)
4461 s->iformat->read_close(s);
4463 avformat_free_context(s);
4470 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4476 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4477 if (s->max_streams < INT_MAX/sizeof(*streams))
4478 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);
4481 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4484 s->streams = streams;
4486 st = av_mallocz(sizeof(AVStream));
4489 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4493 st->info->last_dts = AV_NOPTS_VALUE;
4495 #if FF_API_LAVF_AVCTX
4496 FF_DISABLE_DEPRECATION_WARNINGS
4497 st->codec = avcodec_alloc_context3(c);
4503 FF_ENABLE_DEPRECATION_WARNINGS
4506 st->internal = av_mallocz(sizeof(*st->internal));
4510 st->codecpar = avcodec_parameters_alloc();
4514 st->internal->avctx = avcodec_alloc_context3(NULL);
4515 if (!st->internal->avctx)
4519 #if FF_API_LAVF_AVCTX
4520 FF_DISABLE_DEPRECATION_WARNINGS
4521 /* no default bitrate if decoding */
4522 st->codec->bit_rate = 0;
4523 FF_ENABLE_DEPRECATION_WARNINGS
4526 /* default pts setting is MPEG-like */
4527 avpriv_set_pts_info(st, 33, 1, 90000);
4528 /* we set the current DTS to 0 so that formats without any timestamps
4529 * but durations get some timestamps, formats with some unknown
4530 * timestamps have their first few packets buffered and the
4531 * timestamps corrected before they are returned to the user */
4532 st->cur_dts = RELATIVE_TS_BASE;
4534 st->cur_dts = AV_NOPTS_VALUE;
4537 st->index = s->nb_streams;
4538 st->start_time = AV_NOPTS_VALUE;
4539 st->duration = AV_NOPTS_VALUE;
4540 st->first_dts = AV_NOPTS_VALUE;
4541 st->probe_packets = MAX_PROBE_PACKETS;
4542 st->pts_wrap_reference = AV_NOPTS_VALUE;
4543 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4545 st->last_IP_pts = AV_NOPTS_VALUE;
4546 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4547 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4548 st->pts_buffer[i] = AV_NOPTS_VALUE;
4550 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4552 #if FF_API_R_FRAME_RATE
4553 st->info->last_dts = AV_NOPTS_VALUE;
4555 st->info->fps_first_dts = AV_NOPTS_VALUE;
4556 st->info->fps_last_dts = AV_NOPTS_VALUE;
4558 st->inject_global_side_data = s->internal->inject_global_side_data;
4560 st->internal->need_context_update = 1;
4562 s->streams[s->nb_streams++] = st;
4569 AVProgram *av_new_program(AVFormatContext *ac, int id)
4571 AVProgram *program = NULL;
4574 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4576 for (i = 0; i < ac->nb_programs; i++)
4577 if (ac->programs[i]->id == id)
4578 program = ac->programs[i];
4581 program = av_mallocz(sizeof(AVProgram));
4584 dynarray_add(&ac->programs, &ac->nb_programs, program);
4585 program->discard = AVDISCARD_NONE;
4586 program->pmt_version = -1;
4589 program->pts_wrap_reference = AV_NOPTS_VALUE;
4590 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4592 program->start_time =
4593 program->end_time = AV_NOPTS_VALUE;
4598 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4599 int64_t start, int64_t end, const char *title)
4601 AVChapter *chapter = NULL;
4604 if (end != AV_NOPTS_VALUE && start > end) {
4605 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4609 for (i = 0; i < s->nb_chapters; i++)
4610 if (s->chapters[i]->id == id)
4611 chapter = s->chapters[i];
4614 chapter = av_mallocz(sizeof(AVChapter));
4617 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4619 av_dict_set(&chapter->metadata, "title", title, 0);
4621 chapter->time_base = time_base;
4622 chapter->start = start;
4628 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4631 AVProgram *program = NULL;
4634 if (idx >= ac->nb_streams) {
4635 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4639 for (i = 0; i < ac->nb_programs; i++) {
4640 if (ac->programs[i]->id != progid)
4642 program = ac->programs[i];
4643 for (j = 0; j < program->nb_stream_indexes; j++)
4644 if (program->stream_index[j] == idx)
4647 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4650 program->stream_index = tmp;
4651 program->stream_index[program->nb_stream_indexes++] = idx;
4656 uint64_t ff_ntp_time(void)
4658 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4661 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4663 uint64_t ntp_ts, frac_part, sec;
4666 //current ntp time in seconds and micro seconds
4667 sec = ntp_time_us / 1000000;
4668 usec = ntp_time_us % 1000000;
4670 //encoding in ntp timestamp format
4671 frac_part = usec * 0xFFFFFFFFULL;
4672 frac_part /= 1000000;
4674 if (sec > 0xFFFFFFFFULL)
4675 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4678 ntp_ts |= frac_part;
4683 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4686 char *q, buf1[20], c;
4687 int nd, len, percentd_found;
4699 while (av_isdigit(*p))
4700 nd = nd * 10 + *p++ - '0';
4702 } while (av_isdigit(c));
4708 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4713 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4715 if ((q - buf + len) > buf_size - 1)
4717 memcpy(q, buf1, len);
4725 if ((q - buf) < buf_size - 1)
4729 if (!percentd_found)
4738 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4740 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4743 void av_url_split(char *proto, int proto_size,
4744 char *authorization, int authorization_size,
4745 char *hostname, int hostname_size,
4746 int *port_ptr, char *path, int path_size, const char *url)
4748 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4754 if (authorization_size > 0)
4755 authorization[0] = 0;
4756 if (hostname_size > 0)
4761 /* parse protocol */
4762 if ((p = strchr(url, ':'))) {
4763 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4770 /* no protocol means plain filename */
4771 av_strlcpy(path, url, path_size);
4775 /* separate path from hostname */
4776 ls = strchr(p, '/');
4777 ls2 = strchr(p, '?');
4781 ls = FFMIN(ls, ls2);
4783 av_strlcpy(path, ls, path_size);
4785 ls = &p[strlen(p)]; // XXX
4787 /* the rest is hostname, use that to parse auth/port */
4789 /* authorization (user[:pass]@hostname) */
4791 while ((at = strchr(p, '@')) && at < ls) {
4792 av_strlcpy(authorization, at2,
4793 FFMIN(authorization_size, at + 1 - at2));
4794 p = at + 1; /* skip '@' */
4797 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4799 av_strlcpy(hostname, p + 1,
4800 FFMIN(hostname_size, brk - p));
4801 if (brk[1] == ':' && port_ptr)
4802 *port_ptr = atoi(brk + 2);
4803 } else if ((col = strchr(p, ':')) && col < ls) {
4804 av_strlcpy(hostname, p,
4805 FFMIN(col + 1 - p, hostname_size));
4807 *port_ptr = atoi(col + 1);
4809 av_strlcpy(hostname, p,
4810 FFMIN(ls + 1 - p, hostname_size));
4814 int ff_mkdir_p(const char *path)
4817 char *temp = av_strdup(path);
4821 if (!path || !temp) {
4825 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4827 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4831 for ( ; *pos != '\0'; ++pos) {
4832 if (*pos == '/' || *pos == '\\') {
4835 ret = mkdir(temp, 0755);
4840 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4841 ret = mkdir(temp, 0755);
4848 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4851 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4854 'C', 'D', 'E', 'F' };
4855 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4858 'c', 'd', 'e', 'f' };
4859 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4861 for (i = 0; i < s; i++) {
4862 buff[i * 2] = hex_table[src[i] >> 4];
4863 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4869 int ff_hex_to_data(uint8_t *data, const char *p)
4876 p += strspn(p, SPACE_CHARS);
4879 c = av_toupper((unsigned char) *p++);
4880 if (c >= '0' && c <= '9')
4882 else if (c >= 'A' && c <= 'F')
4897 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4898 unsigned int pts_num, unsigned int pts_den)
4901 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4902 if (new_tb.num != pts_num)
4903 av_log(NULL, AV_LOG_DEBUG,
4904 "st:%d removing common factor %d from timebase\n",
4905 s->index, pts_num / new_tb.num);
4907 av_log(NULL, AV_LOG_WARNING,
4908 "st:%d has too large timebase, reducing\n", s->index);
4910 if (new_tb.num <= 0 || new_tb.den <= 0) {
4911 av_log(NULL, AV_LOG_ERROR,
4912 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4913 new_tb.num, new_tb.den,
4917 s->time_base = new_tb;
4918 #if FF_API_LAVF_AVCTX
4919 FF_DISABLE_DEPRECATION_WARNINGS
4920 s->codec->pkt_timebase = new_tb;
4921 FF_ENABLE_DEPRECATION_WARNINGS
4923 s->internal->avctx->pkt_timebase = new_tb;
4924 s->pts_wrap_bits = pts_wrap_bits;
4927 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4930 const char *ptr = str;
4932 /* Parse key=value pairs. */
4935 char *dest = NULL, *dest_end;
4936 int key_len, dest_len = 0;
4938 /* Skip whitespace and potential commas. */
4939 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4946 if (!(ptr = strchr(key, '=')))
4949 key_len = ptr - key;
4951 callback_get_buf(context, key, key_len, &dest, &dest_len);
4952 dest_end = dest + dest_len - 1;
4956 while (*ptr && *ptr != '\"') {
4960 if (dest && dest < dest_end)
4964 if (dest && dest < dest_end)
4972 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4973 if (dest && dest < dest_end)
4981 int ff_find_stream_index(AVFormatContext *s, int id)
4984 for (i = 0; i < s->nb_streams; i++)
4985 if (s->streams[i]->id == id)
4990 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4994 unsigned int codec_tag;
4995 if (ofmt->query_codec)
4996 return ofmt->query_codec(codec_id, std_compliance);
4997 else if (ofmt->codec_tag)
4998 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4999 else if (codec_id == ofmt->video_codec ||
5000 codec_id == ofmt->audio_codec ||
5001 codec_id == ofmt->subtitle_codec ||
5002 codec_id == ofmt->data_codec)
5005 return AVERROR_PATCHWELCOME;
5008 int avformat_network_init(void)
5012 if ((ret = ff_network_init()) < 0)
5014 if ((ret = ff_tls_init()) < 0)
5020 int avformat_network_deinit(void)
5029 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5030 uint64_t channel_layout, int32_t sample_rate,
5031 int32_t width, int32_t height)
5037 return AVERROR(EINVAL);
5040 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5042 if (channel_layout) {
5044 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5048 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5050 if (width || height) {
5052 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5054 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5056 return AVERROR(ENOMEM);
5057 bytestream_put_le32(&data, flags);
5059 bytestream_put_le32(&data, channels);
5061 bytestream_put_le64(&data, channel_layout);
5063 bytestream_put_le32(&data, sample_rate);
5064 if (width || height) {
5065 bytestream_put_le32(&data, width);
5066 bytestream_put_le32(&data, height);
5071 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5073 AVRational undef = {0, 1};
5074 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5075 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5076 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5078 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5079 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5080 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5081 stream_sample_aspect_ratio = undef;
5083 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5084 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5085 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5086 frame_sample_aspect_ratio = undef;
5088 if (stream_sample_aspect_ratio.num)
5089 return stream_sample_aspect_ratio;
5091 return frame_sample_aspect_ratio;
5094 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5096 AVRational fr = st->r_frame_rate;
5097 AVRational codec_fr = st->internal->avctx->framerate;
5098 AVRational avg_fr = st->avg_frame_rate;
5100 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5101 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5106 if (st->internal->avctx->ticks_per_frame > 1) {
5107 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5108 (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))
5116 * Matches a stream specifier (but ignores requested index).
5118 * @param indexptr set to point to the requested stream index if there is one
5120 * @return <0 on error
5121 * 0 if st is NOT a matching stream
5122 * >0 if st is a matching stream
5124 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5125 const char *spec, const char **indexptr, AVProgram **p)
5127 int match = 1; /* Stores if the specifier matches so far. */
5129 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5133 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5134 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5135 enum AVMediaType type;
5139 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5140 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5141 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5142 case 'd': type = AVMEDIA_TYPE_DATA; break;
5143 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5144 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5145 default: av_assert0(0);
5147 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5148 return AVERROR(EINVAL);
5150 #if FF_API_LAVF_AVCTX
5151 FF_DISABLE_DEPRECATION_WARNINGS
5152 if (type != st->codecpar->codec_type
5153 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5155 FF_ENABLE_DEPRECATION_WARNINGS
5157 if (type != st->codecpar->codec_type)
5160 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5162 } else if (*spec == 'p' && *(spec + 1) == ':') {
5167 prog_id = strtol(spec, &endptr, 0);
5168 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5169 if (spec == endptr || (*endptr && *endptr++ != ':'))
5170 return AVERROR(EINVAL);
5173 for (i = 0; i < s->nb_programs; i++) {
5174 if (s->programs[i]->id != prog_id)
5177 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5178 if (st->index == s->programs[i]->stream_index[j]) {
5181 *p = s->programs[i];
5190 } else if (*spec == '#' ||
5191 (*spec == 'i' && *(spec + 1) == ':')) {
5194 spec += 1 + (*spec == 'i');
5195 stream_id = strtol(spec, &endptr, 0);
5196 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5197 return AVERROR(EINVAL);
5198 return match && (stream_id == st->id);
5199 } else if (*spec == 'm' && *(spec + 1) == ':') {
5200 AVDictionaryEntry *tag;
5206 val = strchr(spec, ':');
5208 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5210 return AVERROR(ENOMEM);
5212 tag = av_dict_get(st->metadata, key, NULL, 0);
5214 if (!val || !strcmp(tag->value, val + 1))
5223 return match && ret;
5224 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5225 AVCodecParameters *par = st->codecpar;
5226 #if FF_API_LAVF_AVCTX
5227 FF_DISABLE_DEPRECATION_WARNINGS
5228 AVCodecContext *codec = st->codec;
5229 FF_ENABLE_DEPRECATION_WARNINGS
5232 switch (par->codec_type) {
5233 case AVMEDIA_TYPE_AUDIO:
5234 val = par->sample_rate && par->channels;
5235 #if FF_API_LAVF_AVCTX
5236 val = val || (codec->sample_rate && codec->channels);
5238 if (par->format == AV_SAMPLE_FMT_NONE
5239 #if FF_API_LAVF_AVCTX
5240 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5245 case AVMEDIA_TYPE_VIDEO:
5246 val = par->width && par->height;
5247 #if FF_API_LAVF_AVCTX
5248 val = val || (codec->width && codec->height);
5250 if (par->format == AV_PIX_FMT_NONE
5251 #if FF_API_LAVF_AVCTX
5252 && codec->pix_fmt == AV_PIX_FMT_NONE
5257 case AVMEDIA_TYPE_UNKNOWN:
5264 #if FF_API_LAVF_AVCTX
5265 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5267 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5270 return AVERROR(EINVAL);
5278 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5283 const char *indexptr = NULL;
5284 AVProgram *p = NULL;
5287 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5294 index = strtol(indexptr, &endptr, 0);
5295 if (*endptr) { /* We can't have anything after the requested index. */
5296 ret = AVERROR(EINVAL);
5300 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5301 if (spec == indexptr)
5302 return (index == st->index);
5304 /* If we requested a matching stream index, we have to ensure st is that. */
5305 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5306 for (int i = 0; i < nb_streams && index >= 0; i++) {
5307 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5308 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5311 if (ret > 0 && index-- == 0 && st == candidate)
5317 if (ret == AVERROR(EINVAL))
5318 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5322 int ff_generate_avci_extradata(AVStream *st)
5324 static const uint8_t avci100_1080p_extradata[] = {
5326 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5327 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5328 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5329 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5330 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5331 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5332 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5333 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5334 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5336 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5339 static const uint8_t avci100_1080i_extradata[] = {
5341 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5342 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5343 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5344 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5345 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5346 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5347 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5348 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5349 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5350 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5351 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5353 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5356 static const uint8_t avci50_1080p_extradata[] = {
5358 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5359 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5360 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5361 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5362 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5363 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5364 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5365 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5366 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5368 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5371 static const uint8_t avci50_1080i_extradata[] = {
5373 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5374 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5375 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5376 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5377 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5378 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5379 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5380 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5381 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5382 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5383 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5385 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5388 static const uint8_t avci100_720p_extradata[] = {
5390 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5391 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5392 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5393 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5394 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5395 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5396 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5397 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5398 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5399 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5401 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5404 static const uint8_t avci50_720p_extradata[] = {
5406 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5407 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5408 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5409 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5410 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5411 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5412 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5413 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5414 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5416 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5420 const uint8_t *data = NULL;
5423 if (st->codecpar->width == 1920) {
5424 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5425 data = avci100_1080p_extradata;
5426 size = sizeof(avci100_1080p_extradata);
5428 data = avci100_1080i_extradata;
5429 size = sizeof(avci100_1080i_extradata);
5431 } else if (st->codecpar->width == 1440) {
5432 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5433 data = avci50_1080p_extradata;
5434 size = sizeof(avci50_1080p_extradata);
5436 data = avci50_1080i_extradata;
5437 size = sizeof(avci50_1080i_extradata);
5439 } else if (st->codecpar->width == 1280) {
5440 data = avci100_720p_extradata;
5441 size = sizeof(avci100_720p_extradata);
5442 } else if (st->codecpar->width == 960) {
5443 data = avci50_720p_extradata;
5444 size = sizeof(avci50_720p_extradata);
5450 av_freep(&st->codecpar->extradata);
5451 if (ff_alloc_extradata(st->codecpar, size))
5452 return AVERROR(ENOMEM);
5453 memcpy(st->codecpar->extradata, data, size);
5458 uint8_t *av_stream_get_side_data(const AVStream *st,
5459 enum AVPacketSideDataType type, int *size)
5463 for (i = 0; i < st->nb_side_data; i++) {
5464 if (st->side_data[i].type == type) {
5466 *size = st->side_data[i].size;
5467 return st->side_data[i].data;
5473 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5474 uint8_t *data, size_t size)
5476 AVPacketSideData *sd, *tmp;
5479 for (i = 0; i < st->nb_side_data; i++) {
5480 sd = &st->side_data[i];
5482 if (sd->type == type) {
5483 av_freep(&sd->data);
5490 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5491 return AVERROR(ERANGE);
5493 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5495 return AVERROR(ENOMEM);
5498 st->side_data = tmp;
5501 sd = &st->side_data[st->nb_side_data - 1];
5509 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5513 uint8_t *data = av_malloc(size);
5518 ret = av_stream_add_side_data(st, type, data, size);
5527 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5530 const AVBitStreamFilter *bsf;
5532 AVCodecParameters *in_par;
5534 if (!(bsf = av_bsf_get_by_name(name))) {
5535 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5536 return AVERROR_BSF_NOT_FOUND;
5539 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5542 if (st->internal->nb_bsfcs) {
5543 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5544 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5546 in_par = st->codecpar;
5547 bsfc->time_base_in = st->time_base;
5550 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5555 if (args && bsfc->filter->priv_class) {
5556 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5557 const char * shorthand[2] = {NULL};
5560 shorthand[0] = opt->name;
5562 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5568 if ((ret = av_bsf_init(bsfc)) < 0) {
5573 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5578 av_log(NULL, AV_LOG_VERBOSE,
5579 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5580 name, args ? args : "");
5585 FF_DISABLE_DEPRECATION_WARNINGS
5586 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5587 AVBitStreamFilterContext *bsfc)
5591 AVPacket new_pkt = *pkt;
5592 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5593 &new_pkt.data, &new_pkt.size,
5594 pkt->data, pkt->size,
5595 pkt->flags & AV_PKT_FLAG_KEY);
5596 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5597 av_packet_unref(pkt);
5598 memset(pkt, 0, sizeof(*pkt));
5601 if(a == 0 && new_pkt.data != pkt->data) {
5602 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
5604 memcpy(t, new_pkt.data, new_pkt.size);
5605 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5610 a = AVERROR(ENOMEM);
5614 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5615 av_buffer_default_free, NULL, 0);
5617 pkt->side_data = NULL;
5618 pkt->side_data_elems = 0;
5619 av_packet_unref(pkt);
5621 av_freep(&new_pkt.data);
5622 a = AVERROR(ENOMEM);
5626 av_log(codec, AV_LOG_ERROR,
5627 "Failed to open bitstream filter %s for stream %d with codec %s",
5628 bsfc->filter->name, pkt->stream_index,
5629 codec->codec ? codec->codec->name : "copy");
5639 FF_ENABLE_DEPRECATION_WARNINGS
5642 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5645 return AVERROR(EINVAL);
5647 if (!(s->oformat->flags & AVFMT_NOFILE))
5648 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5652 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5655 s->io_close(s, *pb);
5659 int ff_is_http_proto(char *filename) {
5660 const char *proto = avio_find_protocol_name(filename);
5661 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5664 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5666 AVDictionaryEntry *entry;
5667 int64_t parsed_timestamp;
5669 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5670 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5671 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5674 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5681 int ff_standardize_creation_time(AVFormatContext *s)
5684 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5686 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5690 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5695 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5697 if (size != AVPALETTE_SIZE) {
5698 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5699 return AVERROR_INVALIDDATA;
5701 memcpy(palette, side_data, AVPALETTE_SIZE);
5705 if (ret == CONTAINS_PAL) {
5707 for (i = 0; i < AVPALETTE_COUNT; i++)
5708 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5715 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5720 ret = av_bprint_finalize(buf, &str);
5723 if (!av_bprint_is_complete(buf)) {
5725 return AVERROR(ENOMEM);
5728 par->extradata = str;
5729 /* Note: the string is NUL terminated (so extradata can be read as a
5730 * string), but the ending character is not accounted in the size (in
5731 * binary formats you are likely not supposed to mux that character). When
5732 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5734 par->extradata_size = buf->len;
5738 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5739 AVStream *ost, const AVStream *ist,
5740 enum AVTimebaseSource copy_tb)
5742 //TODO: use [io]st->internal->avctx
5743 const AVCodecContext *dec_ctx = ist->codec;
5744 AVCodecContext *enc_ctx = ost->codec;
5746 enc_ctx->time_base = ist->time_base;
5748 * Avi is a special case here because it supports variable fps but
5749 * having the fps and timebase differe significantly adds quite some
5752 if (!strcmp(ofmt->name, "avi")) {
5753 #if FF_API_R_FRAME_RATE
5754 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5755 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5756 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5757 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5758 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5759 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5760 enc_ctx->time_base.num = ist->r_frame_rate.den;
5761 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5762 enc_ctx->ticks_per_frame = 2;
5765 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5766 && av_q2d(ist->time_base) < 1.0/500
5767 || copy_tb == AVFMT_TBCF_DECODER) {
5768 enc_ctx->time_base = dec_ctx->time_base;
5769 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5770 enc_ctx->time_base.den *= 2;
5771 enc_ctx->ticks_per_frame = 2;
5773 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5774 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5775 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5776 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5777 && av_q2d(ist->time_base) < 1.0/500
5778 || copy_tb == AVFMT_TBCF_DECODER) {
5779 enc_ctx->time_base = dec_ctx->time_base;
5780 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5784 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5785 && dec_ctx->time_base.num < dec_ctx->time_base.den
5786 && dec_ctx->time_base.num > 0
5787 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5788 enc_ctx->time_base = dec_ctx->time_base;
5791 if (ost->avg_frame_rate.num)
5792 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5794 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5795 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5800 AVRational av_stream_get_codec_timebase(const AVStream *st)
5802 // See avformat_transfer_internal_stream_timing_info() TODO.
5803 #if FF_API_LAVF_AVCTX
5804 FF_DISABLE_DEPRECATION_WARNINGS
5805 return st->codec->time_base;
5806 FF_ENABLE_DEPRECATION_WARNINGS
5808 return st->internal->avctx->time_base;
5812 void ff_format_set_url(AVFormatContext *s, char *url)
5817 #if FF_API_FORMAT_FILENAME
5818 FF_DISABLE_DEPRECATION_WARNINGS
5819 av_strlcpy(s->filename, url, sizeof(s->filename));
5820 FF_ENABLE_DEPRECATION_WARNINGS