2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/thread.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
63 * various utility functions for use within FFmpeg
66 unsigned avformat_version(void)
68 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
69 return LIBAVFORMAT_VERSION_INT;
72 const char *avformat_configuration(void)
74 return FFMPEG_CONFIGURATION;
77 const char *avformat_license(void)
79 #define LICENSE_PREFIX "libavformat license: "
80 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
83 int ff_lock_avformat(void)
85 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
88 int ff_unlock_avformat(void)
90 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
93 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
95 static int is_relative(int64_t ts) {
96 return ts > (RELATIVE_TS_BASE - (1LL<<48));
100 * Wrap a given time stamp, if there is an indication for an overflow
103 * @param timestamp the time stamp to wrap
104 * @return resulting time stamp
106 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
108 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
109 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
110 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
111 timestamp < st->pts_wrap_reference)
112 return timestamp + (1ULL << st->pts_wrap_bits);
113 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
114 timestamp >= st->pts_wrap_reference)
115 return timestamp - (1ULL << st->pts_wrap_bits);
120 #if FF_API_FORMAT_GET_SET
121 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
122 #if FF_API_LAVF_FFSERVER
123 FF_DISABLE_DEPRECATION_WARNINGS
124 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
125 FF_ENABLE_DEPRECATION_WARNINGS
127 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
128 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
129 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
130 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
131 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
132 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
133 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
134 #if FF_API_OLD_OPEN_CALLBACKS
135 FF_DISABLE_DEPRECATION_WARNINGS
136 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
137 FF_ENABLE_DEPRECATION_WARNINGS
141 int64_t av_stream_get_end_pts(const AVStream *st)
143 if (st->internal->priv_pts) {
144 return st->internal->priv_pts->val;
146 return AV_NOPTS_VALUE;
149 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
154 void av_format_inject_global_side_data(AVFormatContext *s)
157 s->internal->inject_global_side_data = 1;
158 for (i = 0; i < s->nb_streams; i++) {
159 AVStream *st = s->streams[i];
160 st->inject_global_side_data = 1;
164 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
166 av_assert0(!dst->codec_whitelist &&
167 !dst->format_whitelist &&
168 !dst->protocol_whitelist &&
169 !dst->protocol_blacklist);
170 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
171 dst->format_whitelist = av_strdup(src->format_whitelist);
172 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
173 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
174 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 || (src-> format_whitelist && !dst-> format_whitelist)
176 || (src->protocol_whitelist && !dst->protocol_whitelist)
177 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
178 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
179 return AVERROR(ENOMEM);
184 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
186 #if FF_API_LAVF_AVCTX
187 FF_DISABLE_DEPRECATION_WARNINGS
188 if (st->codec->codec)
189 return st->codec->codec;
190 FF_ENABLE_DEPRECATION_WARNINGS
193 switch (st->codecpar->codec_type) {
194 case AVMEDIA_TYPE_VIDEO:
195 if (s->video_codec) return s->video_codec;
197 case AVMEDIA_TYPE_AUDIO:
198 if (s->audio_codec) return s->audio_codec;
200 case AVMEDIA_TYPE_SUBTITLE:
201 if (s->subtitle_codec) return s->subtitle_codec;
205 return avcodec_find_decoder(codec_id);
208 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
210 const AVCodec *codec;
212 #if CONFIG_H264_DECODER
213 /* Other parts of the code assume this decoder to be used for h264,
214 * so force it if possible. */
215 if (codec_id == AV_CODEC_ID_H264)
216 return avcodec_find_decoder_by_name("h264");
219 codec = find_decoder(s, st, codec_id);
223 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
224 const AVCodec *probe_codec = NULL;
225 while (probe_codec = av_codec_next(probe_codec)) {
226 if (probe_codec->id == codec_id &&
227 av_codec_is_decoder(probe_codec) &&
228 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
237 #if FF_API_FORMAT_GET_SET
238 int av_format_get_probe_score(const AVFormatContext *s)
240 return s->probe_score;
244 /* an arbitrarily chosen "sane" max packet size -- 50M */
245 #define SANE_CHUNK_SIZE (50000000)
247 int ffio_limit(AVIOContext *s, int size)
249 if (s->maxsize>= 0) {
250 int64_t remaining= s->maxsize - avio_tell(s);
251 if (remaining < size) {
252 int64_t newsize = avio_size(s);
253 if (!s->maxsize || s->maxsize<newsize)
254 s->maxsize = newsize - !newsize;
255 remaining= s->maxsize - avio_tell(s);
256 remaining= FFMAX(remaining, 0);
259 if (s->maxsize>= 0 && remaining+1 < size) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
267 /* Read the data in sane-sized chunks and append to pkt.
268 * Return the number of bytes read or an error. */
269 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
271 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
272 int orig_size = pkt->size;
276 int prev_size = pkt->size;
279 /* When the caller requests a lot of data, limit it to the amount
280 * left in file or SANE_CHUNK_SIZE when it is not known. */
282 if (read_size > SANE_CHUNK_SIZE/10) {
283 read_size = ffio_limit(s, read_size);
284 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
286 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
289 ret = av_grow_packet(pkt, read_size);
293 ret = avio_read(s, pkt->data + prev_size, read_size);
294 if (ret != read_size) {
295 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
302 pkt->flags |= AV_PKT_FLAG_CORRUPT;
306 av_packet_unref(pkt);
307 return pkt->size > orig_size ? pkt->size - orig_size : ret;
310 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
315 pkt->pos = avio_tell(s);
317 return append_packet_chunked(s, pkt, size);
320 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 return append_packet_chunked(s, pkt, size);
327 int av_filename_number_test(const char *filename)
331 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
334 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
337 static const struct {
340 enum AVMediaType type;
342 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
343 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
344 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
345 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
346 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
347 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
348 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
349 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
350 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
351 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
352 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
353 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
354 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
355 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
356 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
360 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
364 av_log(s, AV_LOG_DEBUG,
365 "Probe with size=%d, packets=%d detected %s with score=%d\n",
366 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
368 for (i = 0; fmt_id_type[i].name; i++) {
369 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
370 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
371 st->codecpar->sample_rate)
373 if (st->request_probe > score &&
374 st->codecpar->codec_id != fmt_id_type[i].id)
376 st->codecpar->codec_id = fmt_id_type[i].id;
377 st->codecpar->codec_type = fmt_id_type[i].type;
378 st->internal->need_context_update = 1;
379 #if FF_API_LAVF_AVCTX
380 FF_DISABLE_DEPRECATION_WARNINGS
381 st->codec->codec_type = st->codecpar->codec_type;
382 st->codec->codec_id = st->codecpar->codec_id;
383 FF_ENABLE_DEPRECATION_WARNINGS
392 /************************************************************/
393 /* input media file */
395 int av_demuxer_open(AVFormatContext *ic) {
398 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
399 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
400 return AVERROR(EINVAL);
403 if (ic->iformat->read_header) {
404 err = ic->iformat->read_header(ic);
409 if (ic->pb && !ic->internal->data_offset)
410 ic->internal->data_offset = avio_tell(ic->pb);
415 /* Open input file and probe the format if necessary. */
416 static int init_input(AVFormatContext *s, const char *filename,
417 AVDictionary **options)
420 AVProbeData pd = { filename, NULL, 0 };
421 int score = AVPROBE_SCORE_RETRY;
424 s->flags |= AVFMT_FLAG_CUSTOM_IO;
426 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
427 s, 0, s->format_probesize);
428 else if (s->iformat->flags & AVFMT_NOFILE)
429 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
430 "will be ignored with AVFMT_NOFILE format.\n");
434 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
435 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
438 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
443 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
444 s, 0, s->format_probesize);
447 int ff_packet_list_put(AVPacketList **packet_buffer,
448 AVPacketList **plast_pktl,
449 AVPacket *pkt, int flags)
451 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
455 return AVERROR(ENOMEM);
457 if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
458 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
463 // TODO: Adapt callers in this file so the line below can use
464 // av_packet_move_ref() to effectively move the reference
470 (*plast_pktl)->next = pktl;
472 *packet_buffer = pktl;
474 /* Add the packet in the buffered packet list. */
479 int avformat_queue_attached_pictures(AVFormatContext *s)
482 for (i = 0; i < s->nb_streams; i++)
483 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
484 s->streams[i]->discard < AVDISCARD_ALL) {
485 if (s->streams[i]->attached_pic.size <= 0) {
486 av_log(s, AV_LOG_WARNING,
487 "Attached picture on stream %d has invalid size, "
492 ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
493 &s->internal->raw_packet_buffer_end,
494 &s->streams[i]->attached_pic,
495 FF_PACKETLIST_FLAG_REF_PACKET);
502 static int update_stream_avctx(AVFormatContext *s)
505 for (i = 0; i < s->nb_streams; i++) {
506 AVStream *st = s->streams[i];
508 if (!st->internal->need_context_update)
511 /* close parser, because it depends on the codec */
512 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
513 av_parser_close(st->parser);
517 /* update internal codec context, for the parser */
518 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
522 #if FF_API_LAVF_AVCTX
523 FF_DISABLE_DEPRECATION_WARNINGS
524 /* update deprecated public codec context */
525 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
528 FF_ENABLE_DEPRECATION_WARNINGS
531 st->internal->need_context_update = 0;
537 int avformat_open_input(AVFormatContext **ps, const char *filename,
538 AVInputFormat *fmt, AVDictionary **options)
540 AVFormatContext *s = *ps;
542 AVDictionary *tmp = NULL;
543 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
545 if (!s && !(s = avformat_alloc_context()))
546 return AVERROR(ENOMEM);
548 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
549 return AVERROR(EINVAL);
555 av_dict_copy(&tmp, *options, 0);
557 if (s->pb) // must be before any goto fail
558 s->flags |= AVFMT_FLAG_CUSTOM_IO;
560 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
563 if (!(s->url = av_strdup(filename ? filename : ""))) {
564 ret = AVERROR(ENOMEM);
568 #if FF_API_FORMAT_FILENAME
569 FF_DISABLE_DEPRECATION_WARNINGS
570 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
571 FF_ENABLE_DEPRECATION_WARNINGS
573 if ((ret = init_input(s, filename, &tmp)) < 0)
575 s->probe_score = ret;
577 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
578 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
579 if (!s->protocol_whitelist) {
580 ret = AVERROR(ENOMEM);
585 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
586 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
587 if (!s->protocol_blacklist) {
588 ret = AVERROR(ENOMEM);
593 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
594 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
595 ret = AVERROR(EINVAL);
599 avio_skip(s->pb, s->skip_initial_bytes);
601 /* Check filename in case an image number is expected. */
602 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
603 if (!av_filename_number_test(filename)) {
604 ret = AVERROR(EINVAL);
609 s->duration = s->start_time = AV_NOPTS_VALUE;
611 /* Allocate private data. */
612 if (s->iformat->priv_data_size > 0) {
613 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
614 ret = AVERROR(ENOMEM);
617 if (s->iformat->priv_class) {
618 *(const AVClass **) s->priv_data = s->iformat->priv_class;
619 av_opt_set_defaults(s->priv_data);
620 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
625 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
627 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
630 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
631 if ((ret = s->iformat->read_header(s)) < 0)
635 s->metadata = s->internal->id3v2_meta;
636 s->internal->id3v2_meta = NULL;
637 } else if (s->internal->id3v2_meta) {
638 int level = AV_LOG_WARNING;
639 if (s->error_recognition & AV_EF_COMPLIANT)
640 level = AV_LOG_ERROR;
641 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
642 av_dict_free(&s->internal->id3v2_meta);
643 if (s->error_recognition & AV_EF_EXPLODE)
644 return AVERROR_INVALIDDATA;
647 if (id3v2_extra_meta) {
648 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
649 !strcmp(s->iformat->name, "tta")) {
650 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
652 if ((ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0)
654 if ((ret = ff_id3v2_parse_priv(s, &id3v2_extra_meta)) < 0)
657 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
659 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
661 if ((ret = avformat_queue_attached_pictures(s)) < 0)
664 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
665 s->internal->data_offset = avio_tell(s->pb);
667 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
669 update_stream_avctx(s);
671 for (i = 0; i < s->nb_streams; i++)
672 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
675 av_dict_free(options);
682 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
684 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
686 avformat_free_context(s);
691 /*******************************************************/
693 static void force_codec_ids(AVFormatContext *s, AVStream *st)
695 switch (st->codecpar->codec_type) {
696 case AVMEDIA_TYPE_VIDEO:
697 if (s->video_codec_id)
698 st->codecpar->codec_id = s->video_codec_id;
700 case AVMEDIA_TYPE_AUDIO:
701 if (s->audio_codec_id)
702 st->codecpar->codec_id = s->audio_codec_id;
704 case AVMEDIA_TYPE_SUBTITLE:
705 if (s->subtitle_codec_id)
706 st->codecpar->codec_id = s->subtitle_codec_id;
708 case AVMEDIA_TYPE_DATA:
709 if (s->data_codec_id)
710 st->codecpar->codec_id = s->data_codec_id;
715 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
717 if (st->request_probe>0) {
718 AVProbeData *pd = &st->probe_data;
720 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
724 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
726 av_log(s, AV_LOG_WARNING,
727 "Failed to reallocate probe buffer for stream %d\n",
732 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
733 pd->buf_size += pkt->size;
734 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
737 st->probe_packets = 0;
739 av_log(s, AV_LOG_WARNING,
740 "nothing to probe for stream %d\n", st->index);
744 end= s->internal->raw_packet_buffer_remaining_size <= 0
745 || st->probe_packets<= 0;
747 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
748 int score = set_codec_from_probe_data(s, st, pd);
749 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
753 st->request_probe = -1;
754 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
755 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
757 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
759 force_codec_ids(s, st);
765 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
767 int64_t ref = pkt->dts;
768 int i, pts_wrap_behavior;
769 int64_t pts_wrap_reference;
770 AVProgram *first_program;
772 if (ref == AV_NOPTS_VALUE)
774 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
776 ref &= (1LL << st->pts_wrap_bits)-1;
778 // reference time stamp should be 60 s before first time stamp
779 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
780 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
781 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
782 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
783 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
785 first_program = av_find_program_from_stream(s, NULL, stream_index);
787 if (!first_program) {
788 int default_stream_index = av_find_default_stream_index(s);
789 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
790 for (i = 0; i < s->nb_streams; i++) {
791 if (av_find_program_from_stream(s, NULL, i))
793 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
794 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
798 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
799 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
803 AVProgram *program = first_program;
805 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
806 pts_wrap_reference = program->pts_wrap_reference;
807 pts_wrap_behavior = program->pts_wrap_behavior;
810 program = av_find_program_from_stream(s, program, stream_index);
813 // update every program with differing pts_wrap_reference
814 program = first_program;
816 if (program->pts_wrap_reference != pts_wrap_reference) {
817 for (i = 0; i<program->nb_stream_indexes; i++) {
818 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
819 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
822 program->pts_wrap_reference = pts_wrap_reference;
823 program->pts_wrap_behavior = pts_wrap_behavior;
825 program = av_find_program_from_stream(s, program, stream_index);
831 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
837 AVPacketList *pktl = s->internal->raw_packet_buffer;
841 st = s->streams[pkt->stream_index];
842 if (s->internal->raw_packet_buffer_remaining_size <= 0)
843 if ((err = probe_codec(s, st, NULL)) < 0)
845 if (st->request_probe <= 0) {
846 s->internal->raw_packet_buffer = pktl->next;
847 s->internal->raw_packet_buffer_remaining_size += pkt->size;
856 ret = s->iformat->read_packet(s, pkt);
858 /* Some demuxers return FFERROR_REDO when they consume
859 data and discard it (ignored streams, junk, extradata).
860 We must re-call the demuxer to get the real packet. */
861 if (ret == FFERROR_REDO)
863 if (!pktl || ret == AVERROR(EAGAIN))
865 for (i = 0; i < s->nb_streams; i++) {
867 if (st->probe_packets || st->request_probe > 0)
868 if ((err = probe_codec(s, st, NULL)) < 0)
870 av_assert0(st->request_probe <= 0);
875 err = av_packet_make_refcounted(pkt);
879 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
880 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
881 av_log(s, AV_LOG_WARNING,
882 "Dropped corrupted packet (stream = %d)\n",
884 av_packet_unref(pkt);
888 if (pkt->stream_index >= (unsigned)s->nb_streams) {
889 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
893 st = s->streams[pkt->stream_index];
895 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
896 // correct first time stamps to negative values
897 if (!is_relative(st->first_dts))
898 st->first_dts = wrap_timestamp(st, st->first_dts);
899 if (!is_relative(st->start_time))
900 st->start_time = wrap_timestamp(st, st->start_time);
901 if (!is_relative(st->cur_dts))
902 st->cur_dts = wrap_timestamp(st, st->cur_dts);
905 pkt->dts = wrap_timestamp(st, pkt->dts);
906 pkt->pts = wrap_timestamp(st, pkt->pts);
908 force_codec_ids(s, st);
910 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
911 if (s->use_wallclock_as_timestamps)
912 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
914 if (!pktl && st->request_probe <= 0)
917 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
918 &s->internal->raw_packet_buffer_end,
922 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
924 if ((err = probe_codec(s, st, pkt)) < 0)
930 /**********************************************************/
932 static int determinable_frame_size(AVCodecContext *avctx)
934 switch(avctx->codec_id) {
935 case AV_CODEC_ID_MP1:
936 case AV_CODEC_ID_MP2:
937 case AV_CODEC_ID_MP3:
938 case AV_CODEC_ID_CODEC2:
946 * Return the frame duration in seconds. Return 0 if not available.
948 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
949 AVCodecParserContext *pc, AVPacket *pkt)
951 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
952 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
953 int frame_size, sample_rate;
955 #if FF_API_LAVF_AVCTX
956 FF_DISABLE_DEPRECATION_WARNINGS
957 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
958 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
959 FF_ENABLE_DEPRECATION_WARNINGS
964 switch (st->codecpar->codec_type) {
965 case AVMEDIA_TYPE_VIDEO:
966 if (st->r_frame_rate.num && !pc && s->iformat) {
967 *pnum = st->r_frame_rate.den;
968 *pden = st->r_frame_rate.num;
969 } else if (st->time_base.num * 1000LL > st->time_base.den) {
970 *pnum = st->time_base.num;
971 *pden = st->time_base.den;
972 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
973 av_assert0(st->internal->avctx->ticks_per_frame);
974 av_reduce(pnum, pden,
976 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
979 if (pc && pc->repeat_pict) {
980 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
981 av_reduce(pnum, pden,
982 (*pnum) * (1LL + pc->repeat_pict),
986 /* If this codec can be interlaced or progressive then we need
987 * a parser to compute duration of a packet. Thus if we have
988 * no parser in such case leave duration undefined. */
989 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
993 case AVMEDIA_TYPE_AUDIO:
994 if (st->internal->avctx_inited) {
995 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
996 sample_rate = st->internal->avctx->sample_rate;
998 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
999 sample_rate = st->codecpar->sample_rate;
1001 if (frame_size <= 0 || sample_rate <= 0)
1004 *pden = sample_rate;
1011 static int is_intra_only(enum AVCodecID id)
1013 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1016 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1021 static int has_decode_delay_been_guessed(AVStream *st)
1023 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1024 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1026 #if CONFIG_H264_DECODER
1027 if (st->internal->avctx->has_b_frames &&
1028 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1031 if (st->internal->avctx->has_b_frames<3)
1032 return st->nb_decoded_frames >= 7;
1033 else if (st->internal->avctx->has_b_frames<4)
1034 return st->nb_decoded_frames >= 18;
1036 return st->nb_decoded_frames >= 20;
1039 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1043 if (pktl == s->internal->packet_buffer_end)
1044 return s->internal->parse_queue;
1048 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1049 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1050 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1053 int delay = st->internal->avctx->has_b_frames;
1056 if (dts == AV_NOPTS_VALUE) {
1057 int64_t best_score = INT64_MAX;
1058 for (i = 0; i<delay; i++) {
1059 if (st->pts_reorder_error_count[i]) {
1060 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1061 if (score < best_score) {
1063 dts = pts_buffer[i];
1068 for (i = 0; i<delay; i++) {
1069 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1070 int64_t diff = FFABS(pts_buffer[i] - dts)
1071 + (uint64_t)st->pts_reorder_error[i];
1072 diff = FFMAX(diff, st->pts_reorder_error[i]);
1073 st->pts_reorder_error[i] = diff;
1074 st->pts_reorder_error_count[i]++;
1075 if (st->pts_reorder_error_count[i] > 250) {
1076 st->pts_reorder_error[i] >>= 1;
1077 st->pts_reorder_error_count[i] >>= 1;
1084 if (dts == AV_NOPTS_VALUE)
1085 dts = pts_buffer[0];
1091 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1092 * of the packets in a window.
1094 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1095 AVPacketList *pkt_buffer)
1097 AVStream *st = s->streams[stream_index];
1098 int delay = st->internal->avctx->has_b_frames;
1101 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1103 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1104 pts_buffer[i] = AV_NOPTS_VALUE;
1106 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1107 if (pkt_buffer->pkt.stream_index != stream_index)
1110 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1111 pts_buffer[0] = pkt_buffer->pkt.pts;
1112 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1113 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1115 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1120 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1121 int64_t dts, int64_t pts, AVPacket *pkt)
1123 AVStream *st = s->streams[stream_index];
1124 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1125 AVPacketList *pktl_it;
1129 if (st->first_dts != AV_NOPTS_VALUE ||
1130 dts == AV_NOPTS_VALUE ||
1131 st->cur_dts == AV_NOPTS_VALUE ||
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)
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 st->last_IP_duration = pkt->duration;
1368 st->last_IP_pts = pkt->pts;
1369 /* Cannot compute PTS if not present (we can compute it only
1370 * by knowing the future. */
1371 } else if (pkt->pts != AV_NOPTS_VALUE ||
1372 pkt->dts != AV_NOPTS_VALUE ||
1375 /* presentation is not delayed : PTS and DTS are the same */
1376 if (pkt->pts == AV_NOPTS_VALUE)
1377 pkt->pts = pkt->dts;
1378 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1380 if (pkt->pts == AV_NOPTS_VALUE)
1381 pkt->pts = st->cur_dts;
1382 pkt->dts = pkt->pts;
1383 if (pkt->pts != AV_NOPTS_VALUE)
1384 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1388 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1389 st->pts_buffer[0] = pkt->pts;
1390 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1391 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1393 if(has_decode_delay_been_guessed(st))
1394 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1396 // We skipped it above so we try here.
1398 // This should happen on the first packet
1399 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1400 if (pkt->dts > st->cur_dts)
1401 st->cur_dts = pkt->dts;
1403 if (s->debug & FF_FDEBUG_TS)
1404 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1405 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1408 if (is_intra_only(st->codecpar->codec_id))
1409 pkt->flags |= AV_PKT_FLAG_KEY;
1410 #if FF_API_CONVERGENCE_DURATION
1411 FF_DISABLE_DEPRECATION_WARNINGS
1413 pkt->convergence_duration = pc->convergence_duration;
1414 FF_ENABLE_DEPRECATION_WARNINGS
1418 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1420 AVPacketList *tmp = *pkt_buf;
1423 AVPacketList *pktl = tmp;
1425 av_packet_unref(&pktl->pkt);
1429 *pkt_buf_end = NULL;
1433 * Parse a packet, add all split parts to parse_queue.
1435 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1437 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1439 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1440 AVStream *st = s->streams[stream_index];
1441 uint8_t *data = pkt ? pkt->data : NULL;
1442 int size = pkt ? pkt->size : 0;
1443 int ret = 0, got_output = 0;
1446 av_init_packet(&flush_pkt);
1449 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1450 // preserve 0-size sync packets
1451 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1454 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1456 int64_t next_pts = pkt->pts;
1457 int64_t next_dts = pkt->dts;
1459 av_init_packet(&out_pkt);
1460 len = av_parser_parse2(st->parser, st->internal->avctx,
1461 &out_pkt.data, &out_pkt.size, data, size,
1462 pkt->pts, pkt->dts, pkt->pos);
1464 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1466 /* increment read pointer */
1470 got_output = !!out_pkt.size;
1475 if (pkt->buf && out_pkt.data == pkt->data) {
1476 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1477 * to data in it and not in the parser's internal buffer. */
1478 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1479 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1480 out_pkt.buf = av_buffer_ref(pkt->buf);
1482 ret = AVERROR(ENOMEM);
1486 ret = av_packet_make_refcounted(&out_pkt);
1491 if (pkt->side_data) {
1492 out_pkt.side_data = pkt->side_data;
1493 out_pkt.side_data_elems = pkt->side_data_elems;
1494 pkt->side_data = NULL;
1495 pkt->side_data_elems = 0;
1498 /* set the duration */
1499 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1500 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1501 if (st->internal->avctx->sample_rate > 0) {
1503 av_rescale_q_rnd(st->parser->duration,
1504 (AVRational) { 1, st->internal->avctx->sample_rate },
1510 out_pkt.stream_index = st->index;
1511 out_pkt.pts = st->parser->pts;
1512 out_pkt.dts = st->parser->dts;
1513 out_pkt.pos = st->parser->pos;
1514 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1516 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1517 out_pkt.pos = st->parser->frame_offset;
1519 if (st->parser->key_frame == 1 ||
1520 (st->parser->key_frame == -1 &&
1521 st->parser->pict_type == AV_PICTURE_TYPE_I))
1522 out_pkt.flags |= AV_PKT_FLAG_KEY;
1524 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1525 out_pkt.flags |= AV_PKT_FLAG_KEY;
1527 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1529 ret = ff_packet_list_put(&s->internal->parse_queue,
1530 &s->internal->parse_queue_end,
1533 av_packet_unref(&out_pkt);
1538 /* end of the stream => close and free the parser */
1539 if (pkt == &flush_pkt) {
1540 av_parser_close(st->parser);
1545 av_packet_unref(pkt);
1549 int ff_packet_list_get(AVPacketList **pkt_buffer,
1550 AVPacketList **pkt_buffer_end,
1554 av_assert0(*pkt_buffer);
1557 *pkt_buffer = pktl->next;
1559 *pkt_buffer_end = NULL;
1564 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1566 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1569 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1571 int ret = 0, i, got_packet = 0;
1572 AVDictionary *metadata = NULL;
1574 av_init_packet(pkt);
1576 while (!got_packet && !s->internal->parse_queue) {
1580 /* read next packet */
1581 ret = ff_read_packet(s, &cur_pkt);
1583 if (ret == AVERROR(EAGAIN))
1585 /* flush the parsers */
1586 for (i = 0; i < s->nb_streams; i++) {
1588 if (st->parser && st->need_parsing)
1589 parse_packet(s, NULL, st->index);
1591 /* all remaining packets are now in parse_queue =>
1592 * really terminate parsing */
1596 st = s->streams[cur_pkt.stream_index];
1598 /* update context if required */
1599 if (st->internal->need_context_update) {
1600 if (avcodec_is_open(st->internal->avctx)) {
1601 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1602 avcodec_close(st->internal->avctx);
1603 st->info->found_decoder = 0;
1606 /* close parser, because it depends on the codec */
1607 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1608 av_parser_close(st->parser);
1612 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1616 #if FF_API_LAVF_AVCTX
1617 FF_DISABLE_DEPRECATION_WARNINGS
1618 /* update deprecated public codec context */
1619 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1622 FF_ENABLE_DEPRECATION_WARNINGS
1625 st->internal->need_context_update = 0;
1628 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1629 cur_pkt.dts != AV_NOPTS_VALUE &&
1630 cur_pkt.pts < cur_pkt.dts) {
1631 av_log(s, AV_LOG_WARNING,
1632 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1633 cur_pkt.stream_index,
1634 av_ts2str(cur_pkt.pts),
1635 av_ts2str(cur_pkt.dts),
1638 if (s->debug & FF_FDEBUG_TS)
1639 av_log(s, AV_LOG_DEBUG,
1640 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1641 cur_pkt.stream_index,
1642 av_ts2str(cur_pkt.pts),
1643 av_ts2str(cur_pkt.dts),
1644 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1646 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1647 st->parser = av_parser_init(st->codecpar->codec_id);
1649 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1650 "%s, packets or times may be invalid.\n",
1651 avcodec_get_name(st->codecpar->codec_id));
1652 /* no parser available: just output the raw packets */
1653 st->need_parsing = AVSTREAM_PARSE_NONE;
1654 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1655 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1656 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1657 st->parser->flags |= PARSER_FLAG_ONCE;
1658 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1659 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1662 if (!st->need_parsing || !st->parser) {
1663 /* no parsing needed: we just output the packet as is */
1665 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1666 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1667 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1668 ff_reduce_index(s, st->index);
1669 av_add_index_entry(st, pkt->pos, pkt->dts,
1670 0, 0, AVINDEX_KEYFRAME);
1673 } else if (st->discard < AVDISCARD_ALL) {
1674 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1676 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1677 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1678 st->codecpar->channels = st->internal->avctx->channels;
1679 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1680 st->codecpar->codec_id = st->internal->avctx->codec_id;
1683 av_packet_unref(&cur_pkt);
1685 if (pkt->flags & AV_PKT_FLAG_KEY)
1686 st->skip_to_keyframe = 0;
1687 if (st->skip_to_keyframe) {
1688 av_packet_unref(&cur_pkt);
1696 if (!got_packet && s->internal->parse_queue)
1697 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1700 AVStream *st = s->streams[pkt->stream_index];
1701 int discard_padding = 0;
1702 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1703 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1704 int64_t sample = ts_to_samples(st, pts);
1705 int duration = ts_to_samples(st, pkt->duration);
1706 int64_t end_sample = sample + duration;
1707 if (duration > 0 && end_sample >= st->first_discard_sample &&
1708 sample < st->last_discard_sample)
1709 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1711 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1712 st->skip_samples = st->start_skip_samples;
1713 if (st->skip_samples || discard_padding) {
1714 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1716 AV_WL32(p, st->skip_samples);
1717 AV_WL32(p + 4, discard_padding);
1718 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1720 st->skip_samples = 0;
1723 if (st->inject_global_side_data) {
1724 for (i = 0; i < st->nb_side_data; i++) {
1725 AVPacketSideData *src_sd = &st->side_data[i];
1728 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1731 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1733 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1737 memcpy(dst_data, src_sd->data, src_sd->size);
1739 st->inject_global_side_data = 0;
1743 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1745 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1746 av_dict_copy(&s->metadata, metadata, 0);
1747 av_dict_free(&metadata);
1748 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1751 #if FF_API_LAVF_AVCTX
1752 update_stream_avctx(s);
1755 if (s->debug & FF_FDEBUG_TS)
1756 av_log(s, AV_LOG_DEBUG,
1757 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1758 "size=%d, duration=%"PRId64", flags=%d\n",
1760 av_ts2str(pkt->pts),
1761 av_ts2str(pkt->dts),
1762 pkt->size, pkt->duration, pkt->flags);
1767 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1769 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1775 ret = s->internal->packet_buffer
1776 ? ff_packet_list_get(&s->internal->packet_buffer,
1777 &s->internal->packet_buffer_end, pkt)
1778 : read_frame_internal(s, pkt);
1785 AVPacketList *pktl = s->internal->packet_buffer;
1788 AVPacket *next_pkt = &pktl->pkt;
1790 if (next_pkt->dts != AV_NOPTS_VALUE) {
1791 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1792 // last dts seen for this stream. if any of packets following
1793 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1794 int64_t last_dts = next_pkt->dts;
1795 av_assert2(wrap_bits <= 64);
1796 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1797 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1798 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1799 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1801 next_pkt->pts = pktl->pkt.dts;
1803 if (last_dts != AV_NOPTS_VALUE) {
1804 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1805 last_dts = pktl->pkt.dts;
1810 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1811 // Fixing the last reference frame had none pts issue (For MXF etc).
1812 // We only do this when
1814 // 2. we are not able to resolve a pts value for current packet.
1815 // 3. the packets for this stream at the end of the files had valid dts.
1816 next_pkt->pts = last_dts + next_pkt->duration;
1818 pktl = s->internal->packet_buffer;
1821 /* read packet from packet buffer, if there is data */
1822 st = s->streams[next_pkt->stream_index];
1823 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1824 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1825 ret = ff_packet_list_get(&s->internal->packet_buffer,
1826 &s->internal->packet_buffer_end, pkt);
1831 ret = read_frame_internal(s, pkt);
1833 if (pktl && ret != AVERROR(EAGAIN)) {
1840 ret = ff_packet_list_put(&s->internal->packet_buffer,
1841 &s->internal->packet_buffer_end,
1842 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1843 av_packet_unref(pkt);
1850 st = s->streams[pkt->stream_index];
1851 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1852 ff_reduce_index(s, st->index);
1853 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1856 if (is_relative(pkt->dts))
1857 pkt->dts -= RELATIVE_TS_BASE;
1858 if (is_relative(pkt->pts))
1859 pkt->pts -= RELATIVE_TS_BASE;
1864 /* XXX: suppress the packet queue */
1865 static void flush_packet_queue(AVFormatContext *s)
1869 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1870 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1871 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1873 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1876 /*******************************************************/
1879 int av_find_default_stream_index(AVFormatContext *s)
1883 int best_stream = 0;
1884 int best_score = INT_MIN;
1886 if (s->nb_streams <= 0)
1888 for (i = 0; i < s->nb_streams; i++) {
1891 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1892 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1894 if (st->codecpar->width && st->codecpar->height)
1898 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1899 if (st->codecpar->sample_rate)
1902 if (st->codec_info_nb_frames)
1905 if (st->discard != AVDISCARD_ALL)
1908 if (score > best_score) {
1916 /** Flush the frame reader. */
1917 void ff_read_frame_flush(AVFormatContext *s)
1922 flush_packet_queue(s);
1924 /* Reset read state for each stream. */
1925 for (i = 0; i < s->nb_streams; i++) {
1929 av_parser_close(st->parser);
1932 st->last_IP_pts = AV_NOPTS_VALUE;
1933 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1934 if (st->first_dts == AV_NOPTS_VALUE)
1935 st->cur_dts = RELATIVE_TS_BASE;
1937 /* We set the current DTS to an unspecified origin. */
1938 st->cur_dts = AV_NOPTS_VALUE;
1940 st->probe_packets = MAX_PROBE_PACKETS;
1942 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1943 st->pts_buffer[j] = AV_NOPTS_VALUE;
1945 if (s->internal->inject_global_side_data)
1946 st->inject_global_side_data = 1;
1948 st->skip_samples = 0;
1952 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1956 for (i = 0; i < s->nb_streams; i++) {
1957 AVStream *st = s->streams[i];
1960 av_rescale(timestamp,
1961 st->time_base.den * (int64_t) ref_st->time_base.num,
1962 st->time_base.num * (int64_t) ref_st->time_base.den);
1966 void ff_reduce_index(AVFormatContext *s, int stream_index)
1968 AVStream *st = s->streams[stream_index];
1969 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1971 if ((unsigned) st->nb_index_entries >= max_entries) {
1973 for (i = 0; 2 * i < st->nb_index_entries; i++)
1974 st->index_entries[i] = st->index_entries[2 * i];
1975 st->nb_index_entries = i;
1979 int ff_add_index_entry(AVIndexEntry **index_entries,
1980 int *nb_index_entries,
1981 unsigned int *index_entries_allocated_size,
1982 int64_t pos, int64_t timestamp,
1983 int size, int distance, int flags)
1985 AVIndexEntry *entries, *ie;
1988 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1991 if (timestamp == AV_NOPTS_VALUE)
1992 return AVERROR(EINVAL);
1994 if (size < 0 || size > 0x3FFFFFFF)
1995 return AVERROR(EINVAL);
1997 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1998 timestamp -= RELATIVE_TS_BASE;
2000 entries = av_fast_realloc(*index_entries,
2001 index_entries_allocated_size,
2002 (*nb_index_entries + 1) *
2003 sizeof(AVIndexEntry));
2007 *index_entries = entries;
2009 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2010 timestamp, AVSEEK_FLAG_ANY);
2013 index = (*nb_index_entries)++;
2014 ie = &entries[index];
2015 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2017 ie = &entries[index];
2018 if (ie->timestamp != timestamp) {
2019 if (ie->timestamp <= timestamp)
2021 memmove(entries + index + 1, entries + index,
2022 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2023 (*nb_index_entries)++;
2024 } else if (ie->pos == pos && distance < ie->min_distance)
2025 // do not reduce the distance
2026 distance = ie->min_distance;
2030 ie->timestamp = timestamp;
2031 ie->min_distance = distance;
2038 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2039 int size, int distance, int flags)
2041 timestamp = wrap_timestamp(st, timestamp);
2042 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2043 &st->index_entries_allocated_size, pos,
2044 timestamp, size, distance, flags);
2047 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2048 int64_t wanted_timestamp, int flags)
2056 // Optimize appending index entries at the end.
2057 if (b && entries[b - 1].timestamp < wanted_timestamp)
2063 // Search for the next non-discarded packet.
2064 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2066 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2072 timestamp = entries[m].timestamp;
2073 if (timestamp >= wanted_timestamp)
2075 if (timestamp <= wanted_timestamp)
2078 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2080 if (!(flags & AVSEEK_FLAG_ANY))
2081 while (m >= 0 && m < nb_entries &&
2082 !(entries[m].flags & AVINDEX_KEYFRAME))
2083 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2085 if (m == nb_entries)
2090 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2093 int64_t pos_delta = 0;
2095 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2096 const char *proto = avio_find_protocol_name(s->url);
2099 av_log(s, AV_LOG_INFO,
2100 "Protocol name not provided, cannot determine if input is local or "
2101 "a network protocol, buffers and access patterns cannot be configured "
2102 "optimally without knowing the protocol\n");
2105 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2108 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2109 AVStream *st1 = s->streams[ist1];
2110 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2111 AVStream *st2 = s->streams[ist2];
2117 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2118 AVIndexEntry *e1 = &st1->index_entries[i1];
2119 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2121 skip = FFMAX(skip, e1->size);
2122 for (; i2 < st2->nb_index_entries; i2++) {
2123 AVIndexEntry *e2 = &st2->index_entries[i2];
2124 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2125 if (e2_pts - e1_pts < time_tolerance)
2127 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2135 /* XXX This could be adjusted depending on protocol*/
2136 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2137 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2138 ffio_set_buf_size(s->pb, pos_delta);
2139 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2142 if (skip < (1<<23)) {
2143 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2147 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2149 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2150 wanted_timestamp, flags);
2153 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2154 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2156 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2157 if (stream_index >= 0)
2158 ts = wrap_timestamp(s->streams[stream_index], ts);
2162 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2163 int64_t target_ts, int flags)
2165 AVInputFormat *avif = s->iformat;
2166 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2167 int64_t ts_min, ts_max, ts;
2172 if (stream_index < 0)
2175 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2178 ts_min = AV_NOPTS_VALUE;
2179 pos_limit = -1; // GCC falsely says it may be uninitialized.
2181 st = s->streams[stream_index];
2182 if (st->index_entries) {
2185 /* FIXME: Whole function must be checked for non-keyframe entries in
2186 * index case, especially read_timestamp(). */
2187 index = av_index_search_timestamp(st, target_ts,
2188 flags | AVSEEK_FLAG_BACKWARD);
2189 index = FFMAX(index, 0);
2190 e = &st->index_entries[index];
2192 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2194 ts_min = e->timestamp;
2195 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2196 pos_min, av_ts2str(ts_min));
2198 av_assert1(index == 0);
2201 index = av_index_search_timestamp(st, target_ts,
2202 flags & ~AVSEEK_FLAG_BACKWARD);
2203 av_assert0(index < st->nb_index_entries);
2205 e = &st->index_entries[index];
2206 av_assert1(e->timestamp >= target_ts);
2208 ts_max = e->timestamp;
2209 pos_limit = pos_max - e->min_distance;
2210 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2211 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2215 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2216 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2221 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2224 ff_read_frame_flush(s);
2225 ff_update_cur_dts(s, st, ts);
2230 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2231 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2233 int64_t step = 1024;
2234 int64_t limit, ts_max;
2235 int64_t filesize = avio_size(s->pb);
2236 int64_t pos_max = filesize - 1;
2239 pos_max = FFMAX(0, (pos_max) - step);
2240 ts_max = ff_read_timestamp(s, stream_index,
2241 &pos_max, limit, read_timestamp);
2243 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2244 if (ts_max == AV_NOPTS_VALUE)
2248 int64_t tmp_pos = pos_max + 1;
2249 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2250 &tmp_pos, INT64_MAX, read_timestamp);
2251 if (tmp_ts == AV_NOPTS_VALUE)
2253 av_assert0(tmp_pos > pos_max);
2256 if (tmp_pos >= filesize)
2268 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2269 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2270 int64_t ts_min, int64_t ts_max,
2271 int flags, int64_t *ts_ret,
2272 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2273 int64_t *, int64_t))
2280 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2282 if (ts_min == AV_NOPTS_VALUE) {
2283 pos_min = s->internal->data_offset;
2284 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2285 if (ts_min == AV_NOPTS_VALUE)
2289 if (ts_min >= target_ts) {
2294 if (ts_max == AV_NOPTS_VALUE) {
2295 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2297 pos_limit = pos_max;
2300 if (ts_max <= target_ts) {
2305 av_assert0(ts_min < ts_max);
2308 while (pos_min < pos_limit) {
2309 av_log(s, AV_LOG_TRACE,
2310 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2311 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2312 av_assert0(pos_limit <= pos_max);
2314 if (no_change == 0) {
2315 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2316 // interpolate position (better than dichotomy)
2317 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2319 pos_min - approximate_keyframe_distance;
2320 } else if (no_change == 1) {
2321 // bisection if interpolation did not change min / max pos last time
2322 pos = (pos_min + pos_limit) >> 1;
2324 /* linear search if bisection failed, can only happen if there
2325 * are very few or no keyframes between min/max */
2330 else if (pos > pos_limit)
2334 // May pass pos_limit instead of -1.
2335 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2340 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2341 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2342 pos_min, pos, pos_max,
2343 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2344 pos_limit, start_pos, no_change);
2345 if (ts == AV_NOPTS_VALUE) {
2346 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2349 if (target_ts <= ts) {
2350 pos_limit = start_pos - 1;
2354 if (target_ts >= ts) {
2360 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2361 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2364 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2366 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2367 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2368 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2374 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2375 int64_t pos, int flags)
2377 int64_t pos_min, pos_max;
2379 pos_min = s->internal->data_offset;
2380 pos_max = avio_size(s->pb) - 1;
2384 else if (pos > pos_max)
2387 avio_seek(s->pb, pos, SEEK_SET);
2389 s->io_repositioned = 1;
2394 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2395 int64_t timestamp, int flags)
2402 st = s->streams[stream_index];
2404 index = av_index_search_timestamp(st, timestamp, flags);
2406 if (index < 0 && st->nb_index_entries &&
2407 timestamp < st->index_entries[0].timestamp)
2410 if (index < 0 || index == st->nb_index_entries - 1) {
2414 if (st->nb_index_entries) {
2415 av_assert0(st->index_entries);
2416 ie = &st->index_entries[st->nb_index_entries - 1];
2417 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2419 ff_update_cur_dts(s, st, ie->timestamp);
2421 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2427 read_status = av_read_frame(s, &pkt);
2428 } while (read_status == AVERROR(EAGAIN));
2429 if (read_status < 0)
2431 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2432 if (pkt.flags & AV_PKT_FLAG_KEY) {
2433 av_packet_unref(&pkt);
2436 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2437 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);
2438 av_packet_unref(&pkt);
2442 av_packet_unref(&pkt);
2444 index = av_index_search_timestamp(st, timestamp, flags);
2449 ff_read_frame_flush(s);
2450 if (s->iformat->read_seek)
2451 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2453 ie = &st->index_entries[index];
2454 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2456 ff_update_cur_dts(s, st, ie->timestamp);
2461 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2462 int64_t timestamp, int flags)
2467 if (flags & AVSEEK_FLAG_BYTE) {
2468 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2470 ff_read_frame_flush(s);
2471 return seek_frame_byte(s, stream_index, timestamp, flags);
2474 if (stream_index < 0) {
2475 stream_index = av_find_default_stream_index(s);
2476 if (stream_index < 0)
2479 st = s->streams[stream_index];
2480 /* timestamp for default must be expressed in AV_TIME_BASE units */
2481 timestamp = av_rescale(timestamp, st->time_base.den,
2482 AV_TIME_BASE * (int64_t) st->time_base.num);
2485 /* first, we try the format specific seek */
2486 if (s->iformat->read_seek) {
2487 ff_read_frame_flush(s);
2488 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2494 if (s->iformat->read_timestamp &&
2495 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2496 ff_read_frame_flush(s);
2497 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2498 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2499 ff_read_frame_flush(s);
2500 return seek_frame_generic(s, stream_index, timestamp, flags);
2505 int av_seek_frame(AVFormatContext *s, int stream_index,
2506 int64_t timestamp, int flags)
2510 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2511 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2512 if ((flags & AVSEEK_FLAG_BACKWARD))
2516 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2517 flags & ~AVSEEK_FLAG_BACKWARD);
2520 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2523 ret = avformat_queue_attached_pictures(s);
2528 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2529 int64_t ts, int64_t max_ts, int flags)
2531 if (min_ts > ts || max_ts < ts)
2533 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2534 return AVERROR(EINVAL);
2537 flags |= AVSEEK_FLAG_ANY;
2538 flags &= ~AVSEEK_FLAG_BACKWARD;
2540 if (s->iformat->read_seek2) {
2542 ff_read_frame_flush(s);
2544 if (stream_index == -1 && s->nb_streams == 1) {
2545 AVRational time_base = s->streams[0]->time_base;
2546 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2547 min_ts = av_rescale_rnd(min_ts, time_base.den,
2548 time_base.num * (int64_t)AV_TIME_BASE,
2549 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2550 max_ts = av_rescale_rnd(max_ts, time_base.den,
2551 time_base.num * (int64_t)AV_TIME_BASE,
2552 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2556 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2560 ret = avformat_queue_attached_pictures(s);
2564 if (s->iformat->read_timestamp) {
2565 // try to seek via read_timestamp()
2568 // Fall back on old API if new is not implemented but old is.
2569 // Note the old API has somewhat different semantics.
2570 if (s->iformat->read_seek || 1) {
2571 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2572 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2573 if (ret<0 && ts != min_ts && max_ts != ts) {
2574 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2576 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2581 // try some generic seek like seek_frame_generic() but with new ts semantics
2582 return -1; //unreachable
2585 int avformat_flush(AVFormatContext *s)
2587 ff_read_frame_flush(s);
2591 /*******************************************************/
2594 * Return TRUE if the stream has accurate duration in any stream.
2596 * @return TRUE if the stream has accurate duration for at least one component.
2598 static int has_duration(AVFormatContext *ic)
2603 for (i = 0; i < ic->nb_streams; i++) {
2604 st = ic->streams[i];
2605 if (st->duration != AV_NOPTS_VALUE)
2608 if (ic->duration != AV_NOPTS_VALUE)
2614 * Estimate the stream timings from the one of each components.
2616 * Also computes the global bitrate if possible.
2618 static void update_stream_timings(AVFormatContext *ic)
2620 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2621 int64_t duration, duration1, duration_text, filesize;
2625 start_time = INT64_MAX;
2626 start_time_text = INT64_MAX;
2627 end_time = INT64_MIN;
2628 end_time_text = INT64_MIN;
2629 duration = INT64_MIN;
2630 duration_text = INT64_MIN;
2632 for (i = 0; i < ic->nb_streams; i++) {
2633 AVStream *st = ic->streams[i];
2634 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2635 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2636 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2637 start_time1 = av_rescale_q(st->start_time, st->time_base,
2640 start_time_text = FFMIN(start_time_text, start_time1);
2642 start_time = FFMIN(start_time, start_time1);
2643 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2645 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2646 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2647 end_time1 += start_time1;
2649 end_time_text = FFMAX(end_time_text, end_time1);
2651 end_time = FFMAX(end_time, end_time1);
2653 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2654 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2655 p->start_time = start_time1;
2656 if (p->end_time < end_time1)
2657 p->end_time = end_time1;
2660 if (st->duration != AV_NOPTS_VALUE) {
2661 duration1 = av_rescale_q(st->duration, st->time_base,
2664 duration_text = FFMAX(duration_text, duration1);
2666 duration = FFMAX(duration, duration1);
2669 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2670 start_time = start_time_text;
2671 else if (start_time > start_time_text)
2672 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2674 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2675 end_time = end_time_text;
2676 else if (end_time < end_time_text)
2677 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2679 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2680 duration = duration_text;
2681 else if (duration < duration_text)
2682 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2684 if (start_time != INT64_MAX) {
2685 ic->start_time = start_time;
2686 if (end_time != INT64_MIN) {
2687 if (ic->nb_programs > 1) {
2688 for (i = 0; i < ic->nb_programs; i++) {
2689 p = ic->programs[i];
2690 if (p->start_time != AV_NOPTS_VALUE &&
2691 p->end_time > p->start_time &&
2692 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2693 duration = FFMAX(duration, p->end_time - p->start_time);
2695 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2696 duration = FFMAX(duration, end_time - start_time);
2700 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2701 ic->duration = duration;
2703 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2704 /* compute the bitrate */
2705 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2706 (double) ic->duration;
2707 if (bitrate >= 0 && bitrate <= INT64_MAX)
2708 ic->bit_rate = bitrate;
2712 static void fill_all_stream_timings(AVFormatContext *ic)
2717 update_stream_timings(ic);
2718 for (i = 0; i < ic->nb_streams; i++) {
2719 st = ic->streams[i];
2720 if (st->start_time == AV_NOPTS_VALUE) {
2721 if (ic->start_time != AV_NOPTS_VALUE)
2722 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2724 if (ic->duration != AV_NOPTS_VALUE)
2725 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2731 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2733 int64_t filesize, duration;
2734 int i, show_warning = 0;
2737 /* if bit_rate is already set, we believe it */
2738 if (ic->bit_rate <= 0) {
2739 int64_t bit_rate = 0;
2740 for (i = 0; i < ic->nb_streams; i++) {
2741 st = ic->streams[i];
2742 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2743 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2744 if (st->codecpar->bit_rate > 0) {
2745 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2749 bit_rate += st->codecpar->bit_rate;
2750 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2751 // If we have a videostream with packets but without a bitrate
2752 // then consider the sum not known
2757 ic->bit_rate = bit_rate;
2760 /* if duration is already set, we believe it */
2761 if (ic->duration == AV_NOPTS_VALUE &&
2762 ic->bit_rate != 0) {
2763 filesize = ic->pb ? avio_size(ic->pb) : 0;
2764 if (filesize > ic->internal->data_offset) {
2765 filesize -= ic->internal->data_offset;
2766 for (i = 0; i < ic->nb_streams; i++) {
2767 st = ic->streams[i];
2768 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2769 && st->duration == AV_NOPTS_VALUE) {
2770 duration = av_rescale(8 * filesize, st->time_base.den,
2772 (int64_t) st->time_base.num);
2773 st->duration = duration;
2780 av_log(ic, AV_LOG_WARNING,
2781 "Estimating duration from bitrate, this may be inaccurate\n");
2784 #define DURATION_MAX_READ_SIZE 250000LL
2785 #define DURATION_MAX_RETRY 6
2787 /* only usable for MPEG-PS streams */
2788 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2790 AVPacket pkt1, *pkt = &pkt1;
2792 int num, den, read_size, i, ret;
2793 int found_duration = 0;
2795 int64_t filesize, offset, duration;
2798 /* flush packet queue */
2799 flush_packet_queue(ic);
2801 for (i = 0; i < ic->nb_streams; i++) {
2802 st = ic->streams[i];
2803 if (st->start_time == AV_NOPTS_VALUE &&
2804 st->first_dts == AV_NOPTS_VALUE &&
2805 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2806 av_log(ic, AV_LOG_WARNING,
2807 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2810 av_parser_close(st->parser);
2815 if (ic->skip_estimate_duration_from_pts) {
2816 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2817 goto skip_duration_calc;
2820 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2821 /* estimate the end time (duration) */
2822 /* XXX: may need to support wrapping */
2823 filesize = ic->pb ? avio_size(ic->pb) : 0;
2825 is_end = found_duration;
2826 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2830 avio_seek(ic->pb, offset, SEEK_SET);
2833 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2837 ret = ff_read_packet(ic, pkt);
2838 } while (ret == AVERROR(EAGAIN));
2841 read_size += pkt->size;
2842 st = ic->streams[pkt->stream_index];
2843 if (pkt->pts != AV_NOPTS_VALUE &&
2844 (st->start_time != AV_NOPTS_VALUE ||
2845 st->first_dts != AV_NOPTS_VALUE)) {
2846 if (pkt->duration == 0) {
2847 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2849 pkt->duration = av_rescale_rnd(1,
2850 num * (int64_t) st->time_base.den,
2851 den * (int64_t) st->time_base.num,
2855 duration = pkt->pts + pkt->duration;
2857 if (st->start_time != AV_NOPTS_VALUE)
2858 duration -= st->start_time;
2860 duration -= st->first_dts;
2862 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2863 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2864 st->duration = duration;
2865 st->info->last_duration = duration;
2868 av_packet_unref(pkt);
2871 /* check if all audio/video streams have valid duration */
2874 for (i = 0; i < ic->nb_streams; i++) {
2875 st = ic->streams[i];
2876 switch (st->codecpar->codec_type) {
2877 case AVMEDIA_TYPE_VIDEO:
2878 case AVMEDIA_TYPE_AUDIO:
2879 if (st->duration == AV_NOPTS_VALUE)
2886 ++retry <= DURATION_MAX_RETRY);
2888 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2890 /* warn about audio/video streams which duration could not be estimated */
2891 for (i = 0; i < ic->nb_streams; i++) {
2892 st = ic->streams[i];
2893 if (st->duration == AV_NOPTS_VALUE) {
2894 switch (st->codecpar->codec_type) {
2895 case AVMEDIA_TYPE_VIDEO:
2896 case AVMEDIA_TYPE_AUDIO:
2897 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2898 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2900 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2905 fill_all_stream_timings(ic);
2907 avio_seek(ic->pb, old_offset, SEEK_SET);
2908 for (i = 0; i < ic->nb_streams; i++) {
2911 st = ic->streams[i];
2912 st->cur_dts = st->first_dts;
2913 st->last_IP_pts = AV_NOPTS_VALUE;
2914 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2915 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2916 st->pts_buffer[j] = AV_NOPTS_VALUE;
2920 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2924 /* get the file size, if possible */
2925 if (ic->iformat->flags & AVFMT_NOFILE) {
2928 file_size = avio_size(ic->pb);
2929 file_size = FFMAX(0, file_size);
2932 if ((!strcmp(ic->iformat->name, "mpeg") ||
2933 !strcmp(ic->iformat->name, "mpegts")) &&
2934 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2935 /* get accurate estimate from the PTSes */
2936 estimate_timings_from_pts(ic, old_offset);
2937 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2938 } else if (has_duration(ic)) {
2939 /* at least one component has timings - we use them for all
2941 fill_all_stream_timings(ic);
2942 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2944 /* less precise: use bitrate info */
2945 estimate_timings_from_bit_rate(ic);
2946 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2948 update_stream_timings(ic);
2952 AVStream av_unused *st;
2953 for (i = 0; i < ic->nb_streams; i++) {
2954 st = ic->streams[i];
2955 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2956 (double) st->start_time * av_q2d(st->time_base),
2957 (double) st->duration * av_q2d(st->time_base));
2959 av_log(ic, AV_LOG_TRACE,
2960 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2961 (double) ic->start_time / AV_TIME_BASE,
2962 (double) ic->duration / AV_TIME_BASE,
2963 (int64_t)ic->bit_rate / 1000);
2967 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2969 AVCodecContext *avctx = st->internal->avctx;
2971 #define FAIL(errmsg) do { \
2973 *errmsg_ptr = errmsg; \
2977 if ( avctx->codec_id == AV_CODEC_ID_NONE
2978 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2979 FAIL("unknown codec");
2980 switch (avctx->codec_type) {
2981 case AVMEDIA_TYPE_AUDIO:
2982 if (!avctx->frame_size && determinable_frame_size(avctx))
2983 FAIL("unspecified frame size");
2984 if (st->info->found_decoder >= 0 &&
2985 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2986 FAIL("unspecified sample format");
2987 if (!avctx->sample_rate)
2988 FAIL("unspecified sample rate");
2989 if (!avctx->channels)
2990 FAIL("unspecified number of channels");
2991 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2992 FAIL("no decodable DTS frames");
2994 case AVMEDIA_TYPE_VIDEO:
2996 FAIL("unspecified size");
2997 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2998 FAIL("unspecified pixel format");
2999 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3000 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3001 FAIL("no frame in rv30/40 and no sar");
3003 case AVMEDIA_TYPE_SUBTITLE:
3004 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3005 FAIL("unspecified size");
3007 case AVMEDIA_TYPE_DATA:
3008 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3014 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3015 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3016 AVDictionary **options)
3018 AVCodecContext *avctx = st->internal->avctx;
3019 const AVCodec *codec;
3020 int got_picture = 1, ret = 0;
3021 AVFrame *frame = av_frame_alloc();
3022 AVSubtitle subtitle;
3023 AVPacket pkt = *avpkt;
3024 int do_skip_frame = 0;
3025 enum AVDiscard skip_frame;
3028 return AVERROR(ENOMEM);
3030 if (!avcodec_is_open(avctx) &&
3031 st->info->found_decoder <= 0 &&
3032 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3033 AVDictionary *thread_opt = NULL;
3035 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3038 st->info->found_decoder = -st->codecpar->codec_id;
3043 /* Force thread count to 1 since the H.264 decoder will not extract
3044 * SPS and PPS to extradata during multi-threaded decoding. */
3045 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3046 if (s->codec_whitelist)
3047 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3048 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3050 av_dict_free(&thread_opt);
3052 st->info->found_decoder = -avctx->codec_id;
3055 st->info->found_decoder = 1;
3056 } else if (!st->info->found_decoder)
3057 st->info->found_decoder = 1;
3059 if (st->info->found_decoder < 0) {
3064 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3066 skip_frame = avctx->skip_frame;
3067 avctx->skip_frame = AVDISCARD_ALL;
3070 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3072 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3073 (!st->codec_info_nb_frames &&
3074 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3076 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3077 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3078 ret = avcodec_send_packet(avctx, &pkt);
3079 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3083 ret = avcodec_receive_frame(avctx, frame);
3086 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3088 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3089 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3090 &got_picture, &pkt);
3096 st->nb_decoded_frames++;
3101 if (!pkt.data && !got_picture)
3105 if (do_skip_frame) {
3106 avctx->skip_frame = skip_frame;
3109 av_frame_free(&frame);
3113 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3115 while (tags->id != AV_CODEC_ID_NONE) {
3123 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3126 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3127 if (tag == tags[i].tag)
3129 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3130 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3132 return AV_CODEC_ID_NONE;
3135 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3137 if (bps <= 0 || bps > 64)
3138 return AV_CODEC_ID_NONE;
3143 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3145 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3147 return AV_CODEC_ID_NONE;
3152 if (sflags & (1 << (bps - 1))) {
3155 return AV_CODEC_ID_PCM_S8;
3157 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3159 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3161 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3163 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3165 return AV_CODEC_ID_NONE;
3170 return AV_CODEC_ID_PCM_U8;
3172 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3174 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3176 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3178 return AV_CODEC_ID_NONE;
3184 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3187 if (!av_codec_get_tag2(tags, id, &tag))
3192 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3196 for (i = 0; tags && tags[i]; i++) {
3197 const AVCodecTag *codec_tags = tags[i];
3198 while (codec_tags->id != AV_CODEC_ID_NONE) {
3199 if (codec_tags->id == id) {
3200 *tag = codec_tags->tag;
3209 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3212 for (i = 0; tags && tags[i]; i++) {
3213 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3214 if (id != AV_CODEC_ID_NONE)
3217 return AV_CODEC_ID_NONE;
3220 static void compute_chapters_end(AVFormatContext *s)
3223 int64_t max_time = 0;
3225 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3226 max_time = s->duration +
3227 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3229 for (i = 0; i < s->nb_chapters; i++)
3230 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3231 AVChapter *ch = s->chapters[i];
3232 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3236 for (j = 0; j < s->nb_chapters; j++) {
3237 AVChapter *ch1 = s->chapters[j];
3238 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3240 if (j != i && next_start > ch->start && next_start < end)
3243 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3247 static int get_std_framerate(int i)
3250 return (i + 1) * 1001;
3254 return (i + 31) * 1001 * 12;
3258 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3262 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3265 /* Is the time base unreliable?
3266 * This is a heuristic to balance between quick acceptance of the values in
3267 * the headers vs. some extra checks.
3268 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3269 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3270 * And there are "variable" fps files this needs to detect as well. */
3271 static int tb_unreliable(AVCodecContext *c)
3273 if (c->time_base.den >= 101LL * c->time_base.num ||
3274 c->time_base.den < 5LL * c->time_base.num ||
3275 // c->codec_tag == AV_RL32("DIVX") ||
3276 // c->codec_tag == AV_RL32("XVID") ||
3277 c->codec_tag == AV_RL32("mp4v") ||
3278 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3279 c->codec_id == AV_CODEC_ID_GIF ||
3280 c->codec_id == AV_CODEC_ID_HEVC ||
3281 c->codec_id == AV_CODEC_ID_H264)
3286 int ff_alloc_extradata(AVCodecParameters *par, int size)
3288 av_freep(&par->extradata);
3289 par->extradata_size = 0;
3291 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3292 return AVERROR(EINVAL);
3294 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3295 if (!par->extradata)
3296 return AVERROR(ENOMEM);
3298 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3299 par->extradata_size = size;
3304 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3306 int ret = ff_alloc_extradata(par, size);
3309 ret = avio_read(pb, par->extradata, size);
3311 av_freep(&par->extradata);
3312 par->extradata_size = 0;
3313 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3314 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3320 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3323 int64_t last = st->info->last_dts;
3325 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3326 && ts - (uint64_t)last < INT64_MAX) {
3327 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3328 int64_t duration = ts - last;
3330 if (!st->info->duration_error)
3331 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3332 if (!st->info->duration_error)
3333 return AVERROR(ENOMEM);
3335 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3336 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3337 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3338 if (st->info->duration_error[0][1][i] < 1e10) {
3339 int framerate = get_std_framerate(i);
3340 double sdts = dts*framerate/(1001*12);
3341 for (j= 0; j<2; j++) {
3342 int64_t ticks = llrint(sdts+j*0.5);
3343 double error= sdts - ticks + j*0.5;
3344 st->info->duration_error[j][0][i] += error;
3345 st->info->duration_error[j][1][i] += error*error;
3349 st->info->duration_count++;
3350 st->info->rfps_duration_sum += duration;
3352 if (st->info->duration_count % 10 == 0) {
3353 int n = st->info->duration_count;
3354 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3355 if (st->info->duration_error[0][1][i] < 1e10) {
3356 double a0 = st->info->duration_error[0][0][i] / n;
3357 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3358 double a1 = st->info->duration_error[1][0][i] / n;
3359 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3360 if (error0 > 0.04 && error1 > 0.04) {
3361 st->info->duration_error[0][1][i] = 2e10;
3362 st->info->duration_error[1][1][i] = 2e10;
3368 // ignore the first 4 values, they might have some random jitter
3369 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3370 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3372 if (ts != AV_NOPTS_VALUE)
3373 st->info->last_dts = ts;
3378 void ff_rfps_calculate(AVFormatContext *ic)
3382 for (i = 0; i < ic->nb_streams; i++) {
3383 AVStream *st = ic->streams[i];
3385 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3387 // the check for tb_unreliable() is not completely correct, since this is not about handling
3388 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3389 // ipmovie.c produces.
3390 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)
3391 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);
3392 if (st->info->duration_count>1 && !st->r_frame_rate.num
3393 && tb_unreliable(st->internal->avctx)) {
3395 double best_error= 0.01;
3396 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3398 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3401 if (st->info->codec_info_duration &&
3402 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3404 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3407 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3410 for (k= 0; k<2; k++) {
3411 int n = st->info->duration_count;
3412 double a= st->info->duration_error[k][0][j] / n;
3413 double error= st->info->duration_error[k][1][j]/n - a*a;
3415 if (error < best_error && best_error> 0.000000001) {
3417 num = get_std_framerate(j);
3420 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3423 // do not increase frame rate by more than 1 % in order to match a standard rate.
3424 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3425 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3427 if ( !st->avg_frame_rate.num
3428 && st->r_frame_rate.num && st->info->rfps_duration_sum
3429 && st->info->codec_info_duration <= 0
3430 && st->info->duration_count > 2
3431 && 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
3433 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3434 st->avg_frame_rate = st->r_frame_rate;
3437 av_freep(&st->info->duration_error);
3438 st->info->last_dts = AV_NOPTS_VALUE;
3439 st->info->duration_count = 0;
3440 st->info->rfps_duration_sum = 0;
3444 static int extract_extradata_check(AVStream *st)
3446 const AVBitStreamFilter *f;
3448 f = av_bsf_get_by_name("extract_extradata");
3453 const enum AVCodecID *ids;
3454 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3455 if (*ids == st->codecpar->codec_id)
3462 static int extract_extradata_init(AVStream *st)
3464 AVStreamInternal *i = st->internal;
3465 const AVBitStreamFilter *f;
3468 f = av_bsf_get_by_name("extract_extradata");
3472 /* check that the codec id is supported */
3473 ret = extract_extradata_check(st);
3477 i->extract_extradata.pkt = av_packet_alloc();
3478 if (!i->extract_extradata.pkt)
3479 return AVERROR(ENOMEM);
3481 ret = av_bsf_alloc(f, &i->extract_extradata.bsf);
3485 ret = avcodec_parameters_copy(i->extract_extradata.bsf->par_in,
3490 i->extract_extradata.bsf->time_base_in = st->time_base;
3492 /* if init fails here, we assume extracting extradata is just not
3493 * supported for this codec, so we return success */
3494 ret = av_bsf_init(i->extract_extradata.bsf);
3496 av_bsf_free(&i->extract_extradata.bsf);
3501 i->extract_extradata.inited = 1;
3505 av_bsf_free(&i->extract_extradata.bsf);
3506 av_packet_free(&i->extract_extradata.pkt);
3510 static int extract_extradata(AVStream *st, AVPacket *pkt)
3512 AVStreamInternal *i = st->internal;
3516 if (!i->extract_extradata.inited) {
3517 ret = extract_extradata_init(st);
3522 if (i->extract_extradata.inited && !i->extract_extradata.bsf)
3525 pkt_ref = i->extract_extradata.pkt;
3526 ret = av_packet_ref(pkt_ref, pkt);
3530 ret = av_bsf_send_packet(i->extract_extradata.bsf, pkt_ref);
3532 av_packet_unref(pkt_ref);
3536 while (ret >= 0 && !i->avctx->extradata) {
3540 ret = av_bsf_receive_packet(i->extract_extradata.bsf, pkt_ref);
3542 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3547 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3551 i->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3552 if (!i->avctx->extradata) {
3553 av_packet_unref(pkt_ref);
3554 return AVERROR(ENOMEM);
3556 memcpy(i->avctx->extradata, extradata, extradata_size);
3557 i->avctx->extradata_size = extradata_size;
3559 av_packet_unref(pkt_ref);
3565 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3567 int i, count = 0, ret = 0, j;
3570 AVCodecContext *avctx;
3571 AVPacket pkt1, *pkt;
3572 int64_t old_offset = avio_tell(ic->pb);
3573 // new streams might appear, no options for those
3574 int orig_nb_streams = ic->nb_streams;
3576 int64_t max_analyze_duration = ic->max_analyze_duration;
3577 int64_t max_stream_analyze_duration;
3578 int64_t max_subtitle_analyze_duration;
3579 int64_t probesize = ic->probesize;
3580 int eof_reached = 0;
3581 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3583 flush_codecs = probesize > 0;
3585 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3587 max_stream_analyze_duration = max_analyze_duration;
3588 max_subtitle_analyze_duration = max_analyze_duration;
3589 if (!max_analyze_duration) {
3590 max_stream_analyze_duration =
3591 max_analyze_duration = 5*AV_TIME_BASE;
3592 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3593 if (!strcmp(ic->iformat->name, "flv"))
3594 max_stream_analyze_duration = 90*AV_TIME_BASE;
3595 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3596 max_stream_analyze_duration = 7*AV_TIME_BASE;
3600 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3601 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3603 for (i = 0; i < ic->nb_streams; i++) {
3604 const AVCodec *codec;
3605 AVDictionary *thread_opt = NULL;
3606 st = ic->streams[i];
3607 avctx = st->internal->avctx;
3609 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3610 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3611 /* if (!st->time_base.num)
3613 if (!avctx->time_base.num)
3614 avctx->time_base = st->time_base;
3617 /* check if the caller has overridden the codec id */
3618 #if FF_API_LAVF_AVCTX
3619 FF_DISABLE_DEPRECATION_WARNINGS
3620 if (st->codec->codec_id != st->internal->orig_codec_id) {
3621 st->codecpar->codec_id = st->codec->codec_id;
3622 st->codecpar->codec_type = st->codec->codec_type;
3623 st->internal->orig_codec_id = st->codec->codec_id;
3625 FF_ENABLE_DEPRECATION_WARNINGS
3627 // only for the split stuff
3628 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3629 st->parser = av_parser_init(st->codecpar->codec_id);
3631 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3632 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3633 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3634 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3636 } else if (st->need_parsing) {
3637 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3638 "%s, packets or times may be invalid.\n",
3639 avcodec_get_name(st->codecpar->codec_id));
3643 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3644 st->internal->orig_codec_id = st->codecpar->codec_id;
3646 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3648 goto find_stream_info_err;
3649 if (st->request_probe <= 0)
3650 st->internal->avctx_inited = 1;
3652 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3654 /* Force thread count to 1 since the H.264 decoder will not extract
3655 * SPS and PPS to extradata during multi-threaded decoding. */
3656 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3658 if (ic->codec_whitelist)
3659 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3661 /* Ensure that subtitle_header is properly set. */
3662 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3663 && codec && !avctx->codec) {
3664 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3665 av_log(ic, AV_LOG_WARNING,
3666 "Failed to open codec in %s\n",__FUNCTION__);
3669 // Try to just open decoders, in case this is enough to get parameters.
3670 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3671 if (codec && !avctx->codec)
3672 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3673 av_log(ic, AV_LOG_WARNING,
3674 "Failed to open codec in %s\n",__FUNCTION__);
3677 av_dict_free(&thread_opt);
3680 for (i = 0; i < ic->nb_streams; i++) {
3681 #if FF_API_R_FRAME_RATE
3682 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3684 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3685 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3690 int analyzed_all_streams;
3691 if (ff_check_interrupt(&ic->interrupt_callback)) {
3693 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3697 /* check if one codec still needs to be handled */
3698 for (i = 0; i < ic->nb_streams; i++) {
3699 int fps_analyze_framecount = 20;
3702 st = ic->streams[i];
3703 if (!has_codec_parameters(st, NULL))
3705 /* If the timebase is coarse (like the usual millisecond precision
3706 * of mkv), we need to analyze more frames to reliably arrive at
3707 * the correct fps. */
3708 if (av_q2d(st->time_base) > 0.0005)
3709 fps_analyze_framecount *= 2;
3710 if (!tb_unreliable(st->internal->avctx))
3711 fps_analyze_framecount = 0;
3712 if (ic->fps_probe_size >= 0)
3713 fps_analyze_framecount = ic->fps_probe_size;
3714 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3715 fps_analyze_framecount = 0;
3716 /* variable fps and no guess at the real fps */
3717 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3718 st->info->codec_info_duration_fields/2 :
3719 st->info->duration_count;
3720 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3721 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3722 if (count < fps_analyze_framecount)
3725 // Look at the first 3 frames if there is evidence of frame delay
3726 // but the decoder delay is not set.
3727 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3729 if (!st->internal->avctx->extradata &&
3730 (!st->internal->extract_extradata.inited ||
3731 st->internal->extract_extradata.bsf) &&
3732 extract_extradata_check(st))
3734 if (st->first_dts == AV_NOPTS_VALUE &&
3735 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3736 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3737 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3738 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3741 analyzed_all_streams = 0;
3742 if (!missing_streams || !*missing_streams)
3743 if (i == ic->nb_streams) {
3744 analyzed_all_streams = 1;
3745 /* NOTE: If the format has no header, then we need to read some
3746 * packets to get most of the streams, so we cannot stop here. */
3747 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3748 /* If we found the info for all the codecs, we can stop. */
3750 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3755 /* We did not get all the codec info, but we read too much data. */
3756 if (read_size >= probesize) {
3758 av_log(ic, AV_LOG_DEBUG,
3759 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3760 for (i = 0; i < ic->nb_streams; i++)
3761 if (!ic->streams[i]->r_frame_rate.num &&
3762 ic->streams[i]->info->duration_count <= 1 &&
3763 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3764 strcmp(ic->iformat->name, "image2"))
3765 av_log(ic, AV_LOG_WARNING,
3766 "Stream #%d: not enough frames to estimate rate; "
3767 "consider increasing probesize\n", i);
3771 /* NOTE: A new stream can be added there if no header in file
3772 * (AVFMTCTX_NOHEADER). */
3773 ret = read_frame_internal(ic, &pkt1);
3774 if (ret == AVERROR(EAGAIN))
3785 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3786 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3787 &ic->internal->packet_buffer_end,
3790 goto find_stream_info_err;
3793 st = ic->streams[pkt->stream_index];
3794 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3795 read_size += pkt->size;
3797 avctx = st->internal->avctx;
3798 if (!st->internal->avctx_inited) {
3799 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3801 goto find_stream_info_err;
3802 st->internal->avctx_inited = 1;
3805 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3806 /* check for non-increasing dts */
3807 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3808 st->info->fps_last_dts >= pkt->dts) {
3809 av_log(ic, AV_LOG_DEBUG,
3810 "Non-increasing DTS in stream %d: packet %d with DTS "
3811 "%"PRId64", packet %d with DTS %"PRId64"\n",
3812 st->index, st->info->fps_last_dts_idx,
3813 st->info->fps_last_dts, st->codec_info_nb_frames,
3815 st->info->fps_first_dts =
3816 st->info->fps_last_dts = AV_NOPTS_VALUE;
3818 /* Check for a discontinuity in dts. If the difference in dts
3819 * is more than 1000 times the average packet duration in the
3820 * sequence, we treat it as a discontinuity. */
3821 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3822 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3823 (pkt->dts - st->info->fps_last_dts) / 1000 >
3824 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3825 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3826 av_log(ic, AV_LOG_WARNING,
3827 "DTS discontinuity in stream %d: packet %d with DTS "
3828 "%"PRId64", packet %d with DTS %"PRId64"\n",
3829 st->index, st->info->fps_last_dts_idx,
3830 st->info->fps_last_dts, st->codec_info_nb_frames,
3832 st->info->fps_first_dts =
3833 st->info->fps_last_dts = AV_NOPTS_VALUE;
3836 /* update stored dts values */
3837 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3838 st->info->fps_first_dts = pkt->dts;
3839 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3841 st->info->fps_last_dts = pkt->dts;
3842 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3844 if (st->codec_info_nb_frames>1) {
3848 if (st->time_base.den > 0)
3849 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3850 if (st->avg_frame_rate.num > 0)
3851 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3854 && st->codec_info_nb_frames>30
3855 && st->info->fps_first_dts != AV_NOPTS_VALUE
3856 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3857 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3859 if (analyzed_all_streams) limit = max_analyze_duration;
3860 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3861 else limit = max_stream_analyze_duration;
3864 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3866 t, pkt->stream_index);
3867 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3868 av_packet_unref(pkt);
3871 if (pkt->duration) {
3872 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3873 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3875 st->info->codec_info_duration += pkt->duration;
3876 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3879 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3880 #if FF_API_R_FRAME_RATE
3881 ff_rfps_add_frame(ic, st, pkt->dts);
3883 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3884 st->info->frame_delay_evidence = 1;
3886 if (!st->internal->avctx->extradata) {
3887 ret = extract_extradata(st, pkt);
3889 goto find_stream_info_err;
3892 /* If still no information, we try to open the codec and to
3893 * decompress the frame. We try to avoid that in most cases as
3894 * it takes longer and uses more memory. For MPEG-4, we need to
3895 * decompress for QuickTime.
3897 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3898 * least one frame of codec data, this makes sure the codec initializes
3899 * the channel configuration and does not only trust the values from
3901 try_decode_frame(ic, st, pkt,
3902 (options && i < orig_nb_streams) ? &options[i] : NULL);
3904 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3905 av_packet_unref(pkt);
3907 st->codec_info_nb_frames++;
3913 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3914 st = ic->streams[stream_index];
3915 avctx = st->internal->avctx;
3916 if (!has_codec_parameters(st, NULL)) {
3917 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3918 if (codec && !avctx->codec) {
3919 AVDictionary *opts = NULL;
3920 if (ic->codec_whitelist)
3921 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3922 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3923 av_log(ic, AV_LOG_WARNING,
3924 "Failed to open codec in %s\n",__FUNCTION__);
3925 av_dict_free(&opts);
3929 // EOF already reached while reading the stream above.
3930 // So continue with reoordering DTS with whatever delay we have.
3931 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3932 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3938 AVPacket empty_pkt = { 0 };
3940 av_init_packet(&empty_pkt);
3942 for (i = 0; i < ic->nb_streams; i++) {
3944 st = ic->streams[i];
3946 /* flush the decoders */
3947 if (st->info->found_decoder == 1) {
3949 err = try_decode_frame(ic, st, &empty_pkt,
3950 (options && i < orig_nb_streams)
3951 ? &options[i] : NULL);
3952 } while (err > 0 && !has_codec_parameters(st, NULL));
3955 av_log(ic, AV_LOG_INFO,
3956 "decoding for stream %d failed\n", st->index);
3962 ff_rfps_calculate(ic);
3964 for (i = 0; i < ic->nb_streams; i++) {
3965 st = ic->streams[i];
3966 avctx = st->internal->avctx;
3967 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3968 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3969 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3970 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3971 avctx->codec_tag= tag;
3974 /* estimate average framerate if not set by demuxer */
3975 if (st->info->codec_info_duration_fields &&
3976 !st->avg_frame_rate.num &&
3977 st->info->codec_info_duration) {
3979 double best_error = 0.01;
3980 AVRational codec_frame_rate = avctx->framerate;
3982 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3983 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3984 st->info->codec_info_duration < 0)
3986 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3987 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3988 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3990 /* Round guessed framerate to a "standard" framerate if it's
3991 * within 1% of the original estimate. */
3992 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3993 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3994 double error = fabs(av_q2d(st->avg_frame_rate) /
3995 av_q2d(std_fps) - 1);
3997 if (error < best_error) {
3999 best_fps = std_fps.num;
4002 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4003 error = fabs(av_q2d(codec_frame_rate) /
4004 av_q2d(std_fps) - 1);
4005 if (error < best_error) {
4007 best_fps = std_fps.num;
4012 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4013 best_fps, 12 * 1001, INT_MAX);
4016 if (!st->r_frame_rate.num) {
4017 if ( avctx->time_base.den * (int64_t) st->time_base.num
4018 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4019 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4020 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4022 st->r_frame_rate.num = st->time_base.den;
4023 st->r_frame_rate.den = st->time_base.num;
4026 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4027 AVRational hw_ratio = { avctx->height, avctx->width };
4028 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4031 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4032 if (!avctx->bits_per_coded_sample)
4033 avctx->bits_per_coded_sample =
4034 av_get_bits_per_sample(avctx->codec_id);
4035 // set stream disposition based on audio service type
4036 switch (avctx->audio_service_type) {
4037 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4038 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4040 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4041 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4043 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4044 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4046 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4047 st->disposition = AV_DISPOSITION_COMMENT;
4049 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4050 st->disposition = AV_DISPOSITION_KARAOKE;
4057 estimate_timings(ic, old_offset);
4059 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4061 if (ret >= 0 && ic->nb_streams)
4062 /* We could not have all the codec parameters before EOF. */
4064 for (i = 0; i < ic->nb_streams; i++) {
4066 st = ic->streams[i];
4068 /* if no packet was ever seen, update context now for has_codec_parameters */
4069 if (!st->internal->avctx_inited) {
4070 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4071 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4072 st->codecpar->format = st->internal->avctx->sample_fmt;
4073 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4075 goto find_stream_info_err;
4077 if (!has_codec_parameters(st, &errmsg)) {
4079 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4080 av_log(ic, AV_LOG_WARNING,
4081 "Could not find codec parameters for stream %d (%s): %s\n"
4082 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4089 compute_chapters_end(ic);
4091 /* update the stream parameters from the internal codec contexts */
4092 for (i = 0; i < ic->nb_streams; i++) {
4093 st = ic->streams[i];
4095 if (st->internal->avctx_inited) {
4096 int orig_w = st->codecpar->width;
4097 int orig_h = st->codecpar->height;
4098 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4100 goto find_stream_info_err;
4102 // The decoder might reduce the video size by the lowres factor.
4103 if (st->internal->avctx->lowres && orig_w) {
4104 st->codecpar->width = orig_w;
4105 st->codecpar->height = orig_h;
4110 #if FF_API_LAVF_AVCTX
4111 FF_DISABLE_DEPRECATION_WARNINGS
4112 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4114 goto find_stream_info_err;
4117 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4118 // by the lowres factor.
4119 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4120 st->codec->lowres = st->internal->avctx->lowres;
4121 st->codec->width = st->internal->avctx->width;
4122 st->codec->height = st->internal->avctx->height;
4126 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4127 st->codec->time_base = st->internal->avctx->time_base;
4128 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4130 st->codec->framerate = st->avg_frame_rate;
4132 if (st->internal->avctx->subtitle_header) {
4133 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4134 if (!st->codec->subtitle_header)
4135 goto find_stream_info_err;
4136 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4137 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4138 st->codec->subtitle_header_size);
4141 // Fields unavailable in AVCodecParameters
4142 st->codec->coded_width = st->internal->avctx->coded_width;
4143 st->codec->coded_height = st->internal->avctx->coded_height;
4144 st->codec->properties = st->internal->avctx->properties;
4145 FF_ENABLE_DEPRECATION_WARNINGS
4148 st->internal->avctx_inited = 0;
4151 find_stream_info_err:
4152 for (i = 0; i < ic->nb_streams; i++) {
4153 st = ic->streams[i];
4155 av_freep(&st->info->duration_error);
4156 avcodec_close(ic->streams[i]->internal->avctx);
4157 av_freep(&ic->streams[i]->info);
4158 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4159 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4162 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4163 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4167 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4171 for (i = 0; i < ic->nb_programs; i++) {
4172 if (ic->programs[i] == last) {
4176 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4177 if (ic->programs[i]->stream_index[j] == s)
4178 return ic->programs[i];
4184 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4185 int wanted_stream_nb, int related_stream,
4186 AVCodec **decoder_ret, int flags)
4188 int i, nb_streams = ic->nb_streams;
4189 int ret = AVERROR_STREAM_NOT_FOUND;
4190 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4191 int count, multiframe, disposition;
4192 int64_t best_bitrate = -1;
4194 unsigned *program = NULL;
4195 const AVCodec *decoder = NULL, *best_decoder = NULL;
4197 if (related_stream >= 0 && wanted_stream_nb < 0) {
4198 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4200 program = p->stream_index;
4201 nb_streams = p->nb_stream_indexes;
4204 for (i = 0; i < nb_streams; i++) {
4205 int real_stream_index = program ? program[i] : i;
4206 AVStream *st = ic->streams[real_stream_index];
4207 AVCodecParameters *par = st->codecpar;
4208 if (par->codec_type != type)
4210 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4212 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4215 decoder = find_decoder(ic, st, par->codec_id);
4218 ret = AVERROR_DECODER_NOT_FOUND;
4222 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED));
4223 count = st->codec_info_nb_frames;
4224 bitrate = par->bit_rate;
4225 multiframe = FFMIN(5, count);
4226 if ((best_disposition > disposition) ||
4227 (best_disposition == disposition && best_multiframe > multiframe) ||
4228 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4229 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4231 best_disposition = disposition;
4233 best_bitrate = bitrate;
4234 best_multiframe = multiframe;
4235 ret = real_stream_index;
4236 best_decoder = decoder;
4237 if (program && i == nb_streams - 1 && ret < 0) {
4239 nb_streams = ic->nb_streams;
4240 /* no related stream found, try again with everything */
4245 *decoder_ret = (AVCodec*)best_decoder;
4249 /*******************************************************/
4251 int av_read_play(AVFormatContext *s)
4253 if (s->iformat->read_play)
4254 return s->iformat->read_play(s);
4256 return avio_pause(s->pb, 0);
4257 return AVERROR(ENOSYS);
4260 int av_read_pause(AVFormatContext *s)
4262 if (s->iformat->read_pause)
4263 return s->iformat->read_pause(s);
4265 return avio_pause(s->pb, 1);
4266 return AVERROR(ENOSYS);
4269 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4274 dst->time_base = src->time_base;
4275 dst->nb_frames = src->nb_frames;
4276 dst->disposition = src->disposition;
4277 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4278 dst->avg_frame_rate = src->avg_frame_rate;
4279 dst->r_frame_rate = src->r_frame_rate;
4281 av_dict_free(&dst->metadata);
4282 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4286 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4290 /* Free existing side data*/
4291 for (i = 0; i < dst->nb_side_data; i++)
4292 av_free(dst->side_data[i].data);
4293 av_freep(&dst->side_data);
4294 dst->nb_side_data = 0;
4296 /* Copy side data if present */
4297 if (src->nb_side_data) {
4298 dst->side_data = av_mallocz_array(src->nb_side_data,
4299 sizeof(AVPacketSideData));
4300 if (!dst->side_data)
4301 return AVERROR(ENOMEM);
4302 dst->nb_side_data = src->nb_side_data;
4304 for (i = 0; i < src->nb_side_data; i++) {
4305 uint8_t *data = av_memdup(src->side_data[i].data,
4306 src->side_data[i].size);
4308 return AVERROR(ENOMEM);
4309 dst->side_data[i].type = src->side_data[i].type;
4310 dst->side_data[i].size = src->side_data[i].size;
4311 dst->side_data[i].data = data;
4315 #if FF_API_LAVF_FFSERVER
4316 FF_DISABLE_DEPRECATION_WARNINGS
4317 av_freep(&dst->recommended_encoder_configuration);
4318 if (src->recommended_encoder_configuration) {
4319 const char *conf_str = src->recommended_encoder_configuration;
4320 dst->recommended_encoder_configuration = av_strdup(conf_str);
4321 if (!dst->recommended_encoder_configuration)
4322 return AVERROR(ENOMEM);
4324 FF_ENABLE_DEPRECATION_WARNINGS
4330 static void free_stream(AVStream **pst)
4332 AVStream *st = *pst;
4338 for (i = 0; i < st->nb_side_data; i++)
4339 av_freep(&st->side_data[i].data);
4340 av_freep(&st->side_data);
4343 av_parser_close(st->parser);
4345 if (st->attached_pic.data)
4346 av_packet_unref(&st->attached_pic);
4349 avcodec_free_context(&st->internal->avctx);
4350 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4351 av_bsf_free(&st->internal->bsfcs[i]);
4352 av_freep(&st->internal->bsfcs);
4354 av_freep(&st->internal->priv_pts);
4355 av_bsf_free(&st->internal->extract_extradata.bsf);
4356 av_packet_free(&st->internal->extract_extradata.pkt);
4358 av_freep(&st->internal);
4360 av_dict_free(&st->metadata);
4361 avcodec_parameters_free(&st->codecpar);
4362 av_freep(&st->probe_data.buf);
4363 av_freep(&st->index_entries);
4364 #if FF_API_LAVF_AVCTX
4365 FF_DISABLE_DEPRECATION_WARNINGS
4366 avcodec_free_context(&st->codec);
4367 FF_ENABLE_DEPRECATION_WARNINGS
4369 av_freep(&st->priv_data);
4371 av_freep(&st->info->duration_error);
4372 av_freep(&st->info);
4373 #if FF_API_LAVF_FFSERVER
4374 FF_DISABLE_DEPRECATION_WARNINGS
4375 av_freep(&st->recommended_encoder_configuration);
4376 FF_ENABLE_DEPRECATION_WARNINGS
4382 void ff_free_stream(AVFormatContext *s, AVStream *st)
4384 av_assert0(s->nb_streams>0);
4385 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4387 free_stream(&s->streams[ --s->nb_streams ]);
4390 void avformat_free_context(AVFormatContext *s)
4398 if (s->iformat && s->iformat->priv_class && s->priv_data)
4399 av_opt_free(s->priv_data);
4400 if (s->oformat && s->oformat->priv_class && s->priv_data)
4401 av_opt_free(s->priv_data);
4403 for (i = s->nb_streams - 1; i >= 0; i--)
4404 ff_free_stream(s, s->streams[i]);
4407 for (i = s->nb_programs - 1; i >= 0; i--) {
4408 av_dict_free(&s->programs[i]->metadata);
4409 av_freep(&s->programs[i]->stream_index);
4410 av_freep(&s->programs[i]);
4412 av_freep(&s->programs);
4413 av_freep(&s->priv_data);
4414 while (s->nb_chapters--) {
4415 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4416 av_freep(&s->chapters[s->nb_chapters]);
4418 av_freep(&s->chapters);
4419 av_dict_free(&s->metadata);
4420 av_dict_free(&s->internal->id3v2_meta);
4421 av_freep(&s->streams);
4422 flush_packet_queue(s);
4423 av_freep(&s->internal);
4428 void avformat_close_input(AVFormatContext **ps)
4439 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4440 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4443 flush_packet_queue(s);
4446 if (s->iformat->read_close)
4447 s->iformat->read_close(s);
4449 avformat_free_context(s);
4456 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4462 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4463 if (s->max_streams < INT_MAX/sizeof(*streams))
4464 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);
4467 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4470 s->streams = streams;
4472 st = av_mallocz(sizeof(AVStream));
4475 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4479 st->info->last_dts = AV_NOPTS_VALUE;
4481 #if FF_API_LAVF_AVCTX
4482 FF_DISABLE_DEPRECATION_WARNINGS
4483 st->codec = avcodec_alloc_context3(c);
4489 FF_ENABLE_DEPRECATION_WARNINGS
4492 st->internal = av_mallocz(sizeof(*st->internal));
4496 st->codecpar = avcodec_parameters_alloc();
4500 st->internal->avctx = avcodec_alloc_context3(NULL);
4501 if (!st->internal->avctx)
4505 #if FF_API_LAVF_AVCTX
4506 FF_DISABLE_DEPRECATION_WARNINGS
4507 /* no default bitrate if decoding */
4508 st->codec->bit_rate = 0;
4509 FF_ENABLE_DEPRECATION_WARNINGS
4512 /* default pts setting is MPEG-like */
4513 avpriv_set_pts_info(st, 33, 1, 90000);
4514 /* we set the current DTS to 0 so that formats without any timestamps
4515 * but durations get some timestamps, formats with some unknown
4516 * timestamps have their first few packets buffered and the
4517 * timestamps corrected before they are returned to the user */
4518 st->cur_dts = RELATIVE_TS_BASE;
4520 st->cur_dts = AV_NOPTS_VALUE;
4523 st->index = s->nb_streams;
4524 st->start_time = AV_NOPTS_VALUE;
4525 st->duration = AV_NOPTS_VALUE;
4526 st->first_dts = AV_NOPTS_VALUE;
4527 st->probe_packets = MAX_PROBE_PACKETS;
4528 st->pts_wrap_reference = AV_NOPTS_VALUE;
4529 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4531 st->last_IP_pts = AV_NOPTS_VALUE;
4532 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4533 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4534 st->pts_buffer[i] = AV_NOPTS_VALUE;
4536 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4538 #if FF_API_R_FRAME_RATE
4539 st->info->last_dts = AV_NOPTS_VALUE;
4541 st->info->fps_first_dts = AV_NOPTS_VALUE;
4542 st->info->fps_last_dts = AV_NOPTS_VALUE;
4544 st->inject_global_side_data = s->internal->inject_global_side_data;
4546 st->internal->need_context_update = 1;
4548 s->streams[s->nb_streams++] = st;
4555 AVProgram *av_new_program(AVFormatContext *ac, int id)
4557 AVProgram *program = NULL;
4560 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4562 for (i = 0; i < ac->nb_programs; i++)
4563 if (ac->programs[i]->id == id)
4564 program = ac->programs[i];
4567 program = av_mallocz(sizeof(AVProgram));
4570 dynarray_add(&ac->programs, &ac->nb_programs, program);
4571 program->discard = AVDISCARD_NONE;
4572 program->pmt_version = -1;
4575 program->pts_wrap_reference = AV_NOPTS_VALUE;
4576 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4578 program->start_time =
4579 program->end_time = AV_NOPTS_VALUE;
4584 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4585 int64_t start, int64_t end, const char *title)
4587 AVChapter *chapter = NULL;
4590 if (end != AV_NOPTS_VALUE && start > end) {
4591 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4595 for (i = 0; i < s->nb_chapters; i++)
4596 if (s->chapters[i]->id == id)
4597 chapter = s->chapters[i];
4600 chapter = av_mallocz(sizeof(AVChapter));
4603 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4605 av_dict_set(&chapter->metadata, "title", title, 0);
4607 chapter->time_base = time_base;
4608 chapter->start = start;
4614 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4617 AVProgram *program = NULL;
4620 if (idx >= ac->nb_streams) {
4621 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4625 for (i = 0; i < ac->nb_programs; i++) {
4626 if (ac->programs[i]->id != progid)
4628 program = ac->programs[i];
4629 for (j = 0; j < program->nb_stream_indexes; j++)
4630 if (program->stream_index[j] == idx)
4633 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4636 program->stream_index = tmp;
4637 program->stream_index[program->nb_stream_indexes++] = idx;
4642 uint64_t ff_ntp_time(void)
4644 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4647 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4649 uint64_t ntp_ts, frac_part, sec;
4652 //current ntp time in seconds and micro seconds
4653 sec = ntp_time_us / 1000000;
4654 usec = ntp_time_us % 1000000;
4656 //encoding in ntp timestamp format
4657 frac_part = usec * 0xFFFFFFFFULL;
4658 frac_part /= 1000000;
4660 if (sec > 0xFFFFFFFFULL)
4661 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4664 ntp_ts |= frac_part;
4669 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4672 char *q, buf1[20], c;
4673 int nd, len, percentd_found;
4685 while (av_isdigit(*p))
4686 nd = nd * 10 + *p++ - '0';
4688 } while (av_isdigit(c));
4694 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4699 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4701 if ((q - buf + len) > buf_size - 1)
4703 memcpy(q, buf1, len);
4711 if ((q - buf) < buf_size - 1)
4715 if (!percentd_found)
4724 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4726 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4729 void av_url_split(char *proto, int proto_size,
4730 char *authorization, int authorization_size,
4731 char *hostname, int hostname_size,
4732 int *port_ptr, char *path, int path_size, const char *url)
4734 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4740 if (authorization_size > 0)
4741 authorization[0] = 0;
4742 if (hostname_size > 0)
4747 /* parse protocol */
4748 if ((p = strchr(url, ':'))) {
4749 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4756 /* no protocol means plain filename */
4757 av_strlcpy(path, url, path_size);
4761 /* separate path from hostname */
4762 ls = strchr(p, '/');
4763 ls2 = strchr(p, '?');
4767 ls = FFMIN(ls, ls2);
4769 av_strlcpy(path, ls, path_size);
4771 ls = &p[strlen(p)]; // XXX
4773 /* the rest is hostname, use that to parse auth/port */
4775 /* authorization (user[:pass]@hostname) */
4777 while ((at = strchr(p, '@')) && at < ls) {
4778 av_strlcpy(authorization, at2,
4779 FFMIN(authorization_size, at + 1 - at2));
4780 p = at + 1; /* skip '@' */
4783 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4785 av_strlcpy(hostname, p + 1,
4786 FFMIN(hostname_size, brk - p));
4787 if (brk[1] == ':' && port_ptr)
4788 *port_ptr = atoi(brk + 2);
4789 } else if ((col = strchr(p, ':')) && col < ls) {
4790 av_strlcpy(hostname, p,
4791 FFMIN(col + 1 - p, hostname_size));
4793 *port_ptr = atoi(col + 1);
4795 av_strlcpy(hostname, p,
4796 FFMIN(ls + 1 - p, hostname_size));
4800 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4803 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4806 'C', 'D', 'E', 'F' };
4807 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4810 'c', 'd', 'e', 'f' };
4811 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4813 for (i = 0; i < s; i++) {
4814 buff[i * 2] = hex_table[src[i] >> 4];
4815 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4821 int ff_hex_to_data(uint8_t *data, const char *p)
4828 p += strspn(p, SPACE_CHARS);
4831 c = av_toupper((unsigned char) *p++);
4832 if (c >= '0' && c <= '9')
4834 else if (c >= 'A' && c <= 'F')
4849 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4850 unsigned int pts_num, unsigned int pts_den)
4853 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4854 if (new_tb.num != pts_num)
4855 av_log(NULL, AV_LOG_DEBUG,
4856 "st:%d removing common factor %d from timebase\n",
4857 s->index, pts_num / new_tb.num);
4859 av_log(NULL, AV_LOG_WARNING,
4860 "st:%d has too large timebase, reducing\n", s->index);
4862 if (new_tb.num <= 0 || new_tb.den <= 0) {
4863 av_log(NULL, AV_LOG_ERROR,
4864 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4865 new_tb.num, new_tb.den,
4869 s->time_base = new_tb;
4870 #if FF_API_LAVF_AVCTX
4871 FF_DISABLE_DEPRECATION_WARNINGS
4872 s->codec->pkt_timebase = new_tb;
4873 FF_ENABLE_DEPRECATION_WARNINGS
4875 s->internal->avctx->pkt_timebase = new_tb;
4876 s->pts_wrap_bits = pts_wrap_bits;
4879 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4882 const char *ptr = str;
4884 /* Parse key=value pairs. */
4887 char *dest = NULL, *dest_end;
4888 int key_len, dest_len = 0;
4890 /* Skip whitespace and potential commas. */
4891 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4898 if (!(ptr = strchr(key, '=')))
4901 key_len = ptr - key;
4903 callback_get_buf(context, key, key_len, &dest, &dest_len);
4904 dest_end = dest + dest_len - 1;
4908 while (*ptr && *ptr != '\"') {
4912 if (dest && dest < dest_end)
4916 if (dest && dest < dest_end)
4924 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4925 if (dest && dest < dest_end)
4933 int ff_find_stream_index(AVFormatContext *s, int id)
4936 for (i = 0; i < s->nb_streams; i++)
4937 if (s->streams[i]->id == id)
4942 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4946 unsigned int codec_tag;
4947 if (ofmt->query_codec)
4948 return ofmt->query_codec(codec_id, std_compliance);
4949 else if (ofmt->codec_tag)
4950 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4951 else if (codec_id == ofmt->video_codec ||
4952 codec_id == ofmt->audio_codec ||
4953 codec_id == ofmt->subtitle_codec ||
4954 codec_id == ofmt->data_codec)
4957 return AVERROR_PATCHWELCOME;
4960 int avformat_network_init(void)
4964 if ((ret = ff_network_init()) < 0)
4966 if ((ret = ff_tls_init()) < 0)
4972 int avformat_network_deinit(void)
4981 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4982 uint64_t channel_layout, int32_t sample_rate,
4983 int32_t width, int32_t height)
4989 return AVERROR(EINVAL);
4992 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4994 if (channel_layout) {
4996 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5000 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5002 if (width || height) {
5004 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5006 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5008 return AVERROR(ENOMEM);
5009 bytestream_put_le32(&data, flags);
5011 bytestream_put_le32(&data, channels);
5013 bytestream_put_le64(&data, channel_layout);
5015 bytestream_put_le32(&data, sample_rate);
5016 if (width || height) {
5017 bytestream_put_le32(&data, width);
5018 bytestream_put_le32(&data, height);
5023 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5025 AVRational undef = {0, 1};
5026 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5027 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5028 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5030 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5031 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5032 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5033 stream_sample_aspect_ratio = undef;
5035 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5036 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5037 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5038 frame_sample_aspect_ratio = undef;
5040 if (stream_sample_aspect_ratio.num)
5041 return stream_sample_aspect_ratio;
5043 return frame_sample_aspect_ratio;
5046 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5048 AVRational fr = st->r_frame_rate;
5049 AVRational codec_fr = st->internal->avctx->framerate;
5050 AVRational avg_fr = st->avg_frame_rate;
5052 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5053 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5058 if (st->internal->avctx->ticks_per_frame > 1) {
5059 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5060 (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))
5067 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5070 if (*spec <= '9' && *spec >= '0') /* opt:index */
5071 return strtol(spec, NULL, 0) == st->index;
5072 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5073 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5074 enum AVMediaType type;
5078 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5079 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5080 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5081 case 'd': type = AVMEDIA_TYPE_DATA; break;
5082 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5083 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5084 default: av_assert0(0);
5086 #if FF_API_LAVF_AVCTX
5087 FF_DISABLE_DEPRECATION_WARNINGS
5088 if (type != st->codecpar->codec_type
5089 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5091 FF_ENABLE_DEPRECATION_WARNINGS
5093 if (type != st->codecpar->codec_type)
5096 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5098 if (*spec++ == ':') { /* possibly followed by :index */
5099 int i, index = strtol(spec, NULL, 0);
5100 for (i = 0; i < s->nb_streams; i++) {
5101 #if FF_API_LAVF_AVCTX
5102 FF_DISABLE_DEPRECATION_WARNINGS
5103 if ((s->streams[i]->codecpar->codec_type == type
5104 || s->streams[i]->codec->codec_type == type
5106 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5108 return i == st->index;
5109 FF_ENABLE_DEPRECATION_WARNINGS
5111 if ((s->streams[i]->codecpar->codec_type == type) &&
5112 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5114 return i == st->index;
5120 } else if (*spec == 'p' && *(spec + 1) == ':') {
5124 prog_id = strtol(spec, &endptr, 0);
5125 for (i = 0; i < s->nb_programs; i++) {
5126 if (s->programs[i]->id != prog_id)
5129 if (*endptr++ == ':') { // p:<id>:....
5130 if ( *endptr == 'a' || *endptr == 'v' ||
5131 *endptr == 's' || *endptr == 'd') { // p:<id>:<st_type>[:<index>]
5132 enum AVMediaType type;
5134 switch (*endptr++) {
5135 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5136 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5137 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5138 case 'd': type = AVMEDIA_TYPE_DATA; break;
5139 default: av_assert0(0);
5141 if (*endptr++ == ':') { // p:<id>:<st_type>:<index>
5142 int stream_idx = strtol(endptr, NULL, 0), type_counter = 0;
5143 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5144 int stream_index = s->programs[i]->stream_index[j];
5145 if (st->index == s->programs[i]->stream_index[j]) {
5146 #if FF_API_LAVF_AVCTX
5147 FF_DISABLE_DEPRECATION_WARNINGS
5148 return type_counter == stream_idx &&
5149 (type == st->codecpar->codec_type ||
5150 type == st->codec->codec_type);
5151 FF_ENABLE_DEPRECATION_WARNINGS
5153 return type_counter == stream_idx &&
5154 type == st->codecpar->codec_type;
5157 #if FF_API_LAVF_AVCTX
5158 FF_DISABLE_DEPRECATION_WARNINGS
5159 if (type == s->streams[stream_index]->codecpar->codec_type ||
5160 type == s->streams[stream_index]->codec->codec_type)
5162 FF_ENABLE_DEPRECATION_WARNINGS
5164 if (type == s->streams[stream_index]->codecpar->codec_type)
5169 } else { // p:<id>:<st_type>
5170 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5171 if (st->index == s->programs[i]->stream_index[j]) {
5172 #if FF_API_LAVF_AVCTX
5173 FF_DISABLE_DEPRECATION_WARNINGS
5174 return type == st->codecpar->codec_type ||
5175 type == st->codec->codec_type;
5176 FF_ENABLE_DEPRECATION_WARNINGS
5178 return type == st->codecpar->codec_type;
5184 } else if ( *endptr == 'm') { // p:<id>:m:<metadata_spec>
5185 AVDictionaryEntry *tag;
5189 if (*(++endptr) != ':') {
5190 av_log(s, AV_LOG_ERROR, "Invalid stream specifier syntax, missing ':' sign after :m.\n");
5191 return AVERROR(EINVAL);
5194 val = strchr(++endptr, ':');
5195 key = val ? av_strndup(endptr, val - endptr) : av_strdup(endptr);
5197 return AVERROR(ENOMEM);
5199 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5200 if (st->index == s->programs[i]->stream_index[j]) {
5201 tag = av_dict_get(st->metadata, key, NULL, 0);
5202 if (tag && (!val || !strcmp(tag->value, val + 1)))
5211 } else { // p:<id>:<index>
5212 int stream_idx = strtol(endptr, NULL, 0);
5213 return stream_idx >= 0 &&
5214 stream_idx < s->programs[i]->nb_stream_indexes &&
5215 st->index == s->programs[i]->stream_index[stream_idx];
5219 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5220 if (st->index == s->programs[i]->stream_index[j])
5224 } else if (*spec == '#' ||
5225 (*spec == 'i' && *(spec + 1) == ':')) {
5228 spec += 1 + (*spec == 'i');
5229 stream_id = strtol(spec, &endptr, 0);
5231 return stream_id == st->id;
5232 } else if (*spec == 'm' && *(spec + 1) == ':') {
5233 AVDictionaryEntry *tag;
5238 val = strchr(spec, ':');
5240 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5242 return AVERROR(ENOMEM);
5244 tag = av_dict_get(st->metadata, key, NULL, 0);
5246 if (!val || !strcmp(tag->value, val + 1))
5255 } else if (*spec == 'u') {
5256 AVCodecParameters *par = st->codecpar;
5257 #if FF_API_LAVF_AVCTX
5258 FF_DISABLE_DEPRECATION_WARNINGS
5259 AVCodecContext *codec = st->codec;
5260 FF_ENABLE_DEPRECATION_WARNINGS
5263 switch (par->codec_type) {
5264 case AVMEDIA_TYPE_AUDIO:
5265 val = par->sample_rate && par->channels;
5266 #if FF_API_LAVF_AVCTX
5267 val = val || (codec->sample_rate && codec->channels);
5269 if (par->format == AV_SAMPLE_FMT_NONE
5270 #if FF_API_LAVF_AVCTX
5271 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5276 case AVMEDIA_TYPE_VIDEO:
5277 val = par->width && par->height;
5278 #if FF_API_LAVF_AVCTX
5279 val = val || (codec->width && codec->height);
5281 if (par->format == AV_PIX_FMT_NONE
5282 #if FF_API_LAVF_AVCTX
5283 && codec->pix_fmt == AV_PIX_FMT_NONE
5288 case AVMEDIA_TYPE_UNKNOWN:
5295 #if FF_API_LAVF_AVCTX
5296 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
5298 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
5300 } else if (!*spec) /* empty specifier, matches everything */
5303 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5304 return AVERROR(EINVAL);
5307 int ff_generate_avci_extradata(AVStream *st)
5309 static const uint8_t avci100_1080p_extradata[] = {
5311 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5312 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5313 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5314 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5315 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5316 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5317 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5318 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5319 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5321 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5324 static const uint8_t avci100_1080i_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, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5330 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5331 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5332 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5333 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5334 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5335 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5336 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5338 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5341 static const uint8_t avci50_1080p_extradata[] = {
5343 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5344 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5345 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5346 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5347 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5348 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5349 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5350 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5351 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5353 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5356 static const uint8_t avci50_1080i_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, 0x6e, 0x61,
5362 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5363 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5364 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5365 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5366 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5367 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5368 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5370 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5373 static const uint8_t avci100_720p_extradata[] = {
5375 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5376 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5377 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5378 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5379 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5380 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5381 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5382 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5383 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5384 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5386 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5389 static const uint8_t avci50_720p_extradata[] = {
5391 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5392 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5393 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5394 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5395 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5396 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5397 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5398 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5399 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5401 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5405 const uint8_t *data = NULL;
5408 if (st->codecpar->width == 1920) {
5409 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5410 data = avci100_1080p_extradata;
5411 size = sizeof(avci100_1080p_extradata);
5413 data = avci100_1080i_extradata;
5414 size = sizeof(avci100_1080i_extradata);
5416 } else if (st->codecpar->width == 1440) {
5417 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5418 data = avci50_1080p_extradata;
5419 size = sizeof(avci50_1080p_extradata);
5421 data = avci50_1080i_extradata;
5422 size = sizeof(avci50_1080i_extradata);
5424 } else if (st->codecpar->width == 1280) {
5425 data = avci100_720p_extradata;
5426 size = sizeof(avci100_720p_extradata);
5427 } else if (st->codecpar->width == 960) {
5428 data = avci50_720p_extradata;
5429 size = sizeof(avci50_720p_extradata);
5435 av_freep(&st->codecpar->extradata);
5436 if (ff_alloc_extradata(st->codecpar, size))
5437 return AVERROR(ENOMEM);
5438 memcpy(st->codecpar->extradata, data, size);
5443 uint8_t *av_stream_get_side_data(const AVStream *st,
5444 enum AVPacketSideDataType type, int *size)
5448 for (i = 0; i < st->nb_side_data; i++) {
5449 if (st->side_data[i].type == type) {
5451 *size = st->side_data[i].size;
5452 return st->side_data[i].data;
5458 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5459 uint8_t *data, size_t size)
5461 AVPacketSideData *sd, *tmp;
5464 for (i = 0; i < st->nb_side_data; i++) {
5465 sd = &st->side_data[i];
5467 if (sd->type == type) {
5468 av_freep(&sd->data);
5475 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5476 return AVERROR(ERANGE);
5478 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5480 return AVERROR(ENOMEM);
5483 st->side_data = tmp;
5486 sd = &st->side_data[st->nb_side_data - 1];
5494 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5498 uint8_t *data = av_malloc(size);
5503 ret = av_stream_add_side_data(st, type, data, size);
5512 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5515 const AVBitStreamFilter *bsf;
5517 AVCodecParameters *in_par;
5519 if (!(bsf = av_bsf_get_by_name(name))) {
5520 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5521 return AVERROR_BSF_NOT_FOUND;
5524 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5527 if (st->internal->nb_bsfcs) {
5528 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5529 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5531 in_par = st->codecpar;
5532 bsfc->time_base_in = st->time_base;
5535 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5540 if (args && bsfc->filter->priv_class) {
5541 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5542 const char * shorthand[2] = {NULL};
5545 shorthand[0] = opt->name;
5547 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5553 if ((ret = av_bsf_init(bsfc)) < 0) {
5558 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5563 av_log(NULL, AV_LOG_VERBOSE,
5564 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5565 name, args ? args : "");
5570 FF_DISABLE_DEPRECATION_WARNINGS
5571 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5572 AVBitStreamFilterContext *bsfc)
5576 AVPacket new_pkt = *pkt;
5577 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5578 &new_pkt.data, &new_pkt.size,
5579 pkt->data, pkt->size,
5580 pkt->flags & AV_PKT_FLAG_KEY);
5581 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5582 av_packet_unref(pkt);
5583 memset(pkt, 0, sizeof(*pkt));
5586 if(a == 0 && new_pkt.data != pkt->data) {
5587 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
5589 memcpy(t, new_pkt.data, new_pkt.size);
5590 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5595 a = AVERROR(ENOMEM);
5599 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5600 av_buffer_default_free, NULL, 0);
5602 pkt->side_data = NULL;
5603 pkt->side_data_elems = 0;
5604 av_packet_unref(pkt);
5606 av_freep(&new_pkt.data);
5607 a = AVERROR(ENOMEM);
5611 av_log(codec, AV_LOG_ERROR,
5612 "Failed to open bitstream filter %s for stream %d with codec %s",
5613 bsfc->filter->name, pkt->stream_index,
5614 codec->codec ? codec->codec->name : "copy");
5624 FF_ENABLE_DEPRECATION_WARNINGS
5627 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5630 return AVERROR(EINVAL);
5632 if (!(s->oformat->flags & AVFMT_NOFILE))
5633 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5637 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5640 s->io_close(s, *pb);
5644 int ff_is_http_proto(char *filename) {
5645 const char *proto = avio_find_protocol_name(filename);
5646 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5649 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5651 AVDictionaryEntry *entry;
5652 int64_t parsed_timestamp;
5654 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5655 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5656 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5659 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5666 int ff_standardize_creation_time(AVFormatContext *s)
5669 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5671 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5675 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5680 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5682 if (size != AVPALETTE_SIZE) {
5683 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5684 return AVERROR_INVALIDDATA;
5686 memcpy(palette, side_data, AVPALETTE_SIZE);
5690 if (ret == CONTAINS_PAL) {
5692 for (i = 0; i < AVPALETTE_COUNT; i++)
5693 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5700 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5705 ret = av_bprint_finalize(buf, &str);
5708 if (!av_bprint_is_complete(buf)) {
5710 return AVERROR(ENOMEM);
5713 par->extradata = str;
5714 /* Note: the string is NUL terminated (so extradata can be read as a
5715 * string), but the ending character is not accounted in the size (in
5716 * binary formats you are likely not supposed to mux that character). When
5717 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5719 par->extradata_size = buf->len;
5723 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5724 AVStream *ost, const AVStream *ist,
5725 enum AVTimebaseSource copy_tb)
5727 //TODO: use [io]st->internal->avctx
5728 const AVCodecContext *dec_ctx = ist->codec;
5729 AVCodecContext *enc_ctx = ost->codec;
5731 enc_ctx->time_base = ist->time_base;
5733 * Avi is a special case here because it supports variable fps but
5734 * having the fps and timebase differe significantly adds quite some
5737 if (!strcmp(ofmt->name, "avi")) {
5738 #if FF_API_R_FRAME_RATE
5739 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5740 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5741 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5742 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5743 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5744 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5745 enc_ctx->time_base.num = ist->r_frame_rate.den;
5746 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5747 enc_ctx->ticks_per_frame = 2;
5750 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5751 && av_q2d(ist->time_base) < 1.0/500
5752 || copy_tb == AVFMT_TBCF_DECODER) {
5753 enc_ctx->time_base = dec_ctx->time_base;
5754 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5755 enc_ctx->time_base.den *= 2;
5756 enc_ctx->ticks_per_frame = 2;
5758 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5759 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5760 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5761 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5762 && av_q2d(ist->time_base) < 1.0/500
5763 || copy_tb == AVFMT_TBCF_DECODER) {
5764 enc_ctx->time_base = dec_ctx->time_base;
5765 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5769 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5770 && dec_ctx->time_base.num < dec_ctx->time_base.den
5771 && dec_ctx->time_base.num > 0
5772 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5773 enc_ctx->time_base = dec_ctx->time_base;
5776 if (ost->avg_frame_rate.num)
5777 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5779 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5780 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5785 AVRational av_stream_get_codec_timebase(const AVStream *st)
5787 // See avformat_transfer_internal_stream_timing_info() TODO.
5788 #if FF_API_LAVF_AVCTX
5789 FF_DISABLE_DEPRECATION_WARNINGS
5790 return st->codec->time_base;
5791 FF_ENABLE_DEPRECATION_WARNINGS
5793 return st->internal->avctx->time_base;
5797 void ff_format_set_url(AVFormatContext *s, char *url)
5802 #if FF_API_FORMAT_FILENAME
5803 FF_DISABLE_DEPRECATION_WARNINGS
5804 av_strlcpy(s->filename, url, sizeof(s->filename));
5805 FF_ENABLE_DEPRECATION_WARNINGS