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_TRACE,
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_TRACE, "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 - 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 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2816 /* estimate the end time (duration) */
2817 /* XXX: may need to support wrapping */
2818 filesize = ic->pb ? avio_size(ic->pb) : 0;
2820 is_end = found_duration;
2821 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2825 avio_seek(ic->pb, offset, SEEK_SET);
2828 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2832 ret = ff_read_packet(ic, pkt);
2833 } while (ret == AVERROR(EAGAIN));
2836 read_size += pkt->size;
2837 st = ic->streams[pkt->stream_index];
2838 if (pkt->pts != AV_NOPTS_VALUE &&
2839 (st->start_time != AV_NOPTS_VALUE ||
2840 st->first_dts != AV_NOPTS_VALUE)) {
2841 if (pkt->duration == 0) {
2842 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2844 pkt->duration = av_rescale_rnd(1,
2845 num * (int64_t) st->time_base.den,
2846 den * (int64_t) st->time_base.num,
2850 duration = pkt->pts + pkt->duration;
2852 if (st->start_time != AV_NOPTS_VALUE)
2853 duration -= st->start_time;
2855 duration -= st->first_dts;
2857 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2858 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2859 st->duration = duration;
2860 st->info->last_duration = duration;
2863 av_packet_unref(pkt);
2866 /* check if all audio/video streams have valid duration */
2869 for (i = 0; i < ic->nb_streams; i++) {
2870 st = ic->streams[i];
2871 switch (st->codecpar->codec_type) {
2872 case AVMEDIA_TYPE_VIDEO:
2873 case AVMEDIA_TYPE_AUDIO:
2874 if (st->duration == AV_NOPTS_VALUE)
2881 ++retry <= DURATION_MAX_RETRY);
2883 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2885 /* warn about audio/video streams which duration could not be estimated */
2886 for (i = 0; i < ic->nb_streams; i++) {
2887 st = ic->streams[i];
2888 if (st->duration == AV_NOPTS_VALUE) {
2889 switch (st->codecpar->codec_type) {
2890 case AVMEDIA_TYPE_VIDEO:
2891 case AVMEDIA_TYPE_AUDIO:
2892 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2893 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2895 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2899 fill_all_stream_timings(ic);
2901 avio_seek(ic->pb, old_offset, SEEK_SET);
2902 for (i = 0; i < ic->nb_streams; i++) {
2905 st = ic->streams[i];
2906 st->cur_dts = st->first_dts;
2907 st->last_IP_pts = AV_NOPTS_VALUE;
2908 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2909 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2910 st->pts_buffer[j] = AV_NOPTS_VALUE;
2914 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2918 /* get the file size, if possible */
2919 if (ic->iformat->flags & AVFMT_NOFILE) {
2922 file_size = avio_size(ic->pb);
2923 file_size = FFMAX(0, file_size);
2926 if ((!strcmp(ic->iformat->name, "mpeg") ||
2927 !strcmp(ic->iformat->name, "mpegts")) &&
2928 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2929 /* get accurate estimate from the PTSes */
2930 estimate_timings_from_pts(ic, old_offset);
2931 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2932 } else if (has_duration(ic)) {
2933 /* at least one component has timings - we use them for all
2935 fill_all_stream_timings(ic);
2936 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2938 /* less precise: use bitrate info */
2939 estimate_timings_from_bit_rate(ic);
2940 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2942 update_stream_timings(ic);
2946 AVStream av_unused *st;
2947 for (i = 0; i < ic->nb_streams; i++) {
2948 st = ic->streams[i];
2949 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2950 (double) st->start_time * av_q2d(st->time_base),
2951 (double) st->duration * av_q2d(st->time_base));
2953 av_log(ic, AV_LOG_TRACE,
2954 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2955 (double) ic->start_time / AV_TIME_BASE,
2956 (double) ic->duration / AV_TIME_BASE,
2957 (int64_t)ic->bit_rate / 1000);
2961 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2963 AVCodecContext *avctx = st->internal->avctx;
2965 #define FAIL(errmsg) do { \
2967 *errmsg_ptr = errmsg; \
2971 if ( avctx->codec_id == AV_CODEC_ID_NONE
2972 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2973 FAIL("unknown codec");
2974 switch (avctx->codec_type) {
2975 case AVMEDIA_TYPE_AUDIO:
2976 if (!avctx->frame_size && determinable_frame_size(avctx))
2977 FAIL("unspecified frame size");
2978 if (st->info->found_decoder >= 0 &&
2979 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2980 FAIL("unspecified sample format");
2981 if (!avctx->sample_rate)
2982 FAIL("unspecified sample rate");
2983 if (!avctx->channels)
2984 FAIL("unspecified number of channels");
2985 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2986 FAIL("no decodable DTS frames");
2988 case AVMEDIA_TYPE_VIDEO:
2990 FAIL("unspecified size");
2991 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2992 FAIL("unspecified pixel format");
2993 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2994 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2995 FAIL("no frame in rv30/40 and no sar");
2997 case AVMEDIA_TYPE_SUBTITLE:
2998 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2999 FAIL("unspecified size");
3001 case AVMEDIA_TYPE_DATA:
3002 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3008 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3009 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3010 AVDictionary **options)
3012 AVCodecContext *avctx = st->internal->avctx;
3013 const AVCodec *codec;
3014 int got_picture = 1, ret = 0;
3015 AVFrame *frame = av_frame_alloc();
3016 AVSubtitle subtitle;
3017 AVPacket pkt = *avpkt;
3018 int do_skip_frame = 0;
3019 enum AVDiscard skip_frame;
3022 return AVERROR(ENOMEM);
3024 if (!avcodec_is_open(avctx) &&
3025 st->info->found_decoder <= 0 &&
3026 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3027 AVDictionary *thread_opt = NULL;
3029 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3032 st->info->found_decoder = -st->codecpar->codec_id;
3037 /* Force thread count to 1 since the H.264 decoder will not extract
3038 * SPS and PPS to extradata during multi-threaded decoding. */
3039 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3040 if (s->codec_whitelist)
3041 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3042 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3044 av_dict_free(&thread_opt);
3046 st->info->found_decoder = -avctx->codec_id;
3049 st->info->found_decoder = 1;
3050 } else if (!st->info->found_decoder)
3051 st->info->found_decoder = 1;
3053 if (st->info->found_decoder < 0) {
3058 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3060 skip_frame = avctx->skip_frame;
3061 avctx->skip_frame = AVDISCARD_ALL;
3064 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3066 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3067 (!st->codec_info_nb_frames &&
3068 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3070 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3071 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3072 ret = avcodec_send_packet(avctx, &pkt);
3073 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3077 ret = avcodec_receive_frame(avctx, frame);
3080 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3082 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3083 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3084 &got_picture, &pkt);
3090 st->nb_decoded_frames++;
3095 if (!pkt.data && !got_picture)
3099 if (do_skip_frame) {
3100 avctx->skip_frame = skip_frame;
3103 av_frame_free(&frame);
3107 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3109 while (tags->id != AV_CODEC_ID_NONE) {
3117 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3120 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3121 if (tag == tags[i].tag)
3123 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3124 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3126 return AV_CODEC_ID_NONE;
3129 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3131 if (bps <= 0 || bps > 64)
3132 return AV_CODEC_ID_NONE;
3137 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3139 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3141 return AV_CODEC_ID_NONE;
3146 if (sflags & (1 << (bps - 1))) {
3149 return AV_CODEC_ID_PCM_S8;
3151 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3153 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3155 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3157 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3159 return AV_CODEC_ID_NONE;
3164 return AV_CODEC_ID_PCM_U8;
3166 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3168 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3170 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3172 return AV_CODEC_ID_NONE;
3178 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3181 if (!av_codec_get_tag2(tags, id, &tag))
3186 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3190 for (i = 0; tags && tags[i]; i++) {
3191 const AVCodecTag *codec_tags = tags[i];
3192 while (codec_tags->id != AV_CODEC_ID_NONE) {
3193 if (codec_tags->id == id) {
3194 *tag = codec_tags->tag;
3203 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3206 for (i = 0; tags && tags[i]; i++) {
3207 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3208 if (id != AV_CODEC_ID_NONE)
3211 return AV_CODEC_ID_NONE;
3214 static void compute_chapters_end(AVFormatContext *s)
3217 int64_t max_time = 0;
3219 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3220 max_time = s->duration +
3221 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3223 for (i = 0; i < s->nb_chapters; i++)
3224 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3225 AVChapter *ch = s->chapters[i];
3226 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3230 for (j = 0; j < s->nb_chapters; j++) {
3231 AVChapter *ch1 = s->chapters[j];
3232 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3234 if (j != i && next_start > ch->start && next_start < end)
3237 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3241 static int get_std_framerate(int i)
3244 return (i + 1) * 1001;
3248 return (i + 31) * 1001 * 12;
3252 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3256 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3259 /* Is the time base unreliable?
3260 * This is a heuristic to balance between quick acceptance of the values in
3261 * the headers vs. some extra checks.
3262 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3263 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3264 * And there are "variable" fps files this needs to detect as well. */
3265 static int tb_unreliable(AVCodecContext *c)
3267 if (c->time_base.den >= 101LL * c->time_base.num ||
3268 c->time_base.den < 5LL * c->time_base.num ||
3269 // c->codec_tag == AV_RL32("DIVX") ||
3270 // c->codec_tag == AV_RL32("XVID") ||
3271 c->codec_tag == AV_RL32("mp4v") ||
3272 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3273 c->codec_id == AV_CODEC_ID_GIF ||
3274 c->codec_id == AV_CODEC_ID_HEVC ||
3275 c->codec_id == AV_CODEC_ID_H264)
3280 int ff_alloc_extradata(AVCodecParameters *par, int size)
3282 av_freep(&par->extradata);
3283 par->extradata_size = 0;
3285 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3286 return AVERROR(EINVAL);
3288 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3289 if (!par->extradata)
3290 return AVERROR(ENOMEM);
3292 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3293 par->extradata_size = size;
3298 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3300 int ret = ff_alloc_extradata(par, size);
3303 ret = avio_read(pb, par->extradata, size);
3305 av_freep(&par->extradata);
3306 par->extradata_size = 0;
3307 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3308 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3314 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3317 int64_t last = st->info->last_dts;
3319 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3320 && ts - (uint64_t)last < INT64_MAX) {
3321 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3322 int64_t duration = ts - last;
3324 if (!st->info->duration_error)
3325 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3326 if (!st->info->duration_error)
3327 return AVERROR(ENOMEM);
3329 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3330 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3331 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3332 if (st->info->duration_error[0][1][i] < 1e10) {
3333 int framerate = get_std_framerate(i);
3334 double sdts = dts*framerate/(1001*12);
3335 for (j= 0; j<2; j++) {
3336 int64_t ticks = llrint(sdts+j*0.5);
3337 double error= sdts - ticks + j*0.5;
3338 st->info->duration_error[j][0][i] += error;
3339 st->info->duration_error[j][1][i] += error*error;
3343 st->info->duration_count++;
3344 st->info->rfps_duration_sum += duration;
3346 if (st->info->duration_count % 10 == 0) {
3347 int n = st->info->duration_count;
3348 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3349 if (st->info->duration_error[0][1][i] < 1e10) {
3350 double a0 = st->info->duration_error[0][0][i] / n;
3351 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3352 double a1 = st->info->duration_error[1][0][i] / n;
3353 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3354 if (error0 > 0.04 && error1 > 0.04) {
3355 st->info->duration_error[0][1][i] = 2e10;
3356 st->info->duration_error[1][1][i] = 2e10;
3362 // ignore the first 4 values, they might have some random jitter
3363 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3364 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3366 if (ts != AV_NOPTS_VALUE)
3367 st->info->last_dts = ts;
3372 void ff_rfps_calculate(AVFormatContext *ic)
3376 for (i = 0; i < ic->nb_streams; i++) {
3377 AVStream *st = ic->streams[i];
3379 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3381 // the check for tb_unreliable() is not completely correct, since this is not about handling
3382 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3383 // ipmovie.c produces.
3384 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)
3385 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);
3386 if (st->info->duration_count>1 && !st->r_frame_rate.num
3387 && tb_unreliable(st->internal->avctx)) {
3389 double best_error= 0.01;
3390 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3392 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3395 if (st->info->codec_info_duration &&
3396 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3398 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3401 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3404 for (k= 0; k<2; k++) {
3405 int n = st->info->duration_count;
3406 double a= st->info->duration_error[k][0][j] / n;
3407 double error= st->info->duration_error[k][1][j]/n - a*a;
3409 if (error < best_error && best_error> 0.000000001) {
3411 num = get_std_framerate(j);
3414 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3417 // do not increase frame rate by more than 1 % in order to match a standard rate.
3418 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3419 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3421 if ( !st->avg_frame_rate.num
3422 && st->r_frame_rate.num && st->info->rfps_duration_sum
3423 && st->info->codec_info_duration <= 0
3424 && st->info->duration_count > 2
3425 && 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
3427 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3428 st->avg_frame_rate = st->r_frame_rate;
3431 av_freep(&st->info->duration_error);
3432 st->info->last_dts = AV_NOPTS_VALUE;
3433 st->info->duration_count = 0;
3434 st->info->rfps_duration_sum = 0;
3438 static int extract_extradata_check(AVStream *st)
3440 const AVBitStreamFilter *f;
3442 f = av_bsf_get_by_name("extract_extradata");
3447 const enum AVCodecID *ids;
3448 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3449 if (*ids == st->codecpar->codec_id)
3456 static int extract_extradata_init(AVStream *st)
3458 AVStreamInternal *i = st->internal;
3459 const AVBitStreamFilter *f;
3462 f = av_bsf_get_by_name("extract_extradata");
3466 /* check that the codec id is supported */
3467 ret = extract_extradata_check(st);
3471 i->extract_extradata.pkt = av_packet_alloc();
3472 if (!i->extract_extradata.pkt)
3473 return AVERROR(ENOMEM);
3475 ret = av_bsf_alloc(f, &i->extract_extradata.bsf);
3479 ret = avcodec_parameters_copy(i->extract_extradata.bsf->par_in,
3484 i->extract_extradata.bsf->time_base_in = st->time_base;
3486 /* if init fails here, we assume extracting extradata is just not
3487 * supported for this codec, so we return success */
3488 ret = av_bsf_init(i->extract_extradata.bsf);
3490 av_bsf_free(&i->extract_extradata.bsf);
3495 i->extract_extradata.inited = 1;
3499 av_bsf_free(&i->extract_extradata.bsf);
3500 av_packet_free(&i->extract_extradata.pkt);
3504 static int extract_extradata(AVStream *st, AVPacket *pkt)
3506 AVStreamInternal *i = st->internal;
3510 if (!i->extract_extradata.inited) {
3511 ret = extract_extradata_init(st);
3516 if (i->extract_extradata.inited && !i->extract_extradata.bsf)
3519 pkt_ref = i->extract_extradata.pkt;
3520 ret = av_packet_ref(pkt_ref, pkt);
3524 ret = av_bsf_send_packet(i->extract_extradata.bsf, pkt_ref);
3526 av_packet_unref(pkt_ref);
3530 while (ret >= 0 && !i->avctx->extradata) {
3534 ret = av_bsf_receive_packet(i->extract_extradata.bsf, pkt_ref);
3536 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3541 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3545 i->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3546 if (!i->avctx->extradata) {
3547 av_packet_unref(pkt_ref);
3548 return AVERROR(ENOMEM);
3550 memcpy(i->avctx->extradata, extradata, extradata_size);
3551 i->avctx->extradata_size = extradata_size;
3553 av_packet_unref(pkt_ref);
3559 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3561 int i, count = 0, ret = 0, j;
3564 AVCodecContext *avctx;
3565 AVPacket pkt1, *pkt;
3566 int64_t old_offset = avio_tell(ic->pb);
3567 // new streams might appear, no options for those
3568 int orig_nb_streams = ic->nb_streams;
3570 int64_t max_analyze_duration = ic->max_analyze_duration;
3571 int64_t max_stream_analyze_duration;
3572 int64_t max_subtitle_analyze_duration;
3573 int64_t probesize = ic->probesize;
3574 int eof_reached = 0;
3575 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3577 flush_codecs = probesize > 0;
3579 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3581 max_stream_analyze_duration = max_analyze_duration;
3582 max_subtitle_analyze_duration = max_analyze_duration;
3583 if (!max_analyze_duration) {
3584 max_stream_analyze_duration =
3585 max_analyze_duration = 5*AV_TIME_BASE;
3586 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3587 if (!strcmp(ic->iformat->name, "flv"))
3588 max_stream_analyze_duration = 90*AV_TIME_BASE;
3589 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3590 max_stream_analyze_duration = 7*AV_TIME_BASE;
3594 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3595 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3597 for (i = 0; i < ic->nb_streams; i++) {
3598 const AVCodec *codec;
3599 AVDictionary *thread_opt = NULL;
3600 st = ic->streams[i];
3601 avctx = st->internal->avctx;
3603 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3604 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3605 /* if (!st->time_base.num)
3607 if (!avctx->time_base.num)
3608 avctx->time_base = st->time_base;
3611 /* check if the caller has overridden the codec id */
3612 #if FF_API_LAVF_AVCTX
3613 FF_DISABLE_DEPRECATION_WARNINGS
3614 if (st->codec->codec_id != st->internal->orig_codec_id) {
3615 st->codecpar->codec_id = st->codec->codec_id;
3616 st->codecpar->codec_type = st->codec->codec_type;
3617 st->internal->orig_codec_id = st->codec->codec_id;
3619 FF_ENABLE_DEPRECATION_WARNINGS
3621 // only for the split stuff
3622 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3623 st->parser = av_parser_init(st->codecpar->codec_id);
3625 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3626 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3627 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3628 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3630 } else if (st->need_parsing) {
3631 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3632 "%s, packets or times may be invalid.\n",
3633 avcodec_get_name(st->codecpar->codec_id));
3637 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3638 st->internal->orig_codec_id = st->codecpar->codec_id;
3640 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3642 goto find_stream_info_err;
3643 if (st->request_probe <= 0)
3644 st->internal->avctx_inited = 1;
3646 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3648 /* Force thread count to 1 since the H.264 decoder will not extract
3649 * SPS and PPS to extradata during multi-threaded decoding. */
3650 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3652 if (ic->codec_whitelist)
3653 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3655 /* Ensure that subtitle_header is properly set. */
3656 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3657 && codec && !avctx->codec) {
3658 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3659 av_log(ic, AV_LOG_WARNING,
3660 "Failed to open codec in %s\n",__FUNCTION__);
3663 // Try to just open decoders, in case this is enough to get parameters.
3664 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3665 if (codec && !avctx->codec)
3666 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3667 av_log(ic, AV_LOG_WARNING,
3668 "Failed to open codec in %s\n",__FUNCTION__);
3671 av_dict_free(&thread_opt);
3674 for (i = 0; i < ic->nb_streams; i++) {
3675 #if FF_API_R_FRAME_RATE
3676 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3678 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3679 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3684 int analyzed_all_streams;
3685 if (ff_check_interrupt(&ic->interrupt_callback)) {
3687 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3691 /* check if one codec still needs to be handled */
3692 for (i = 0; i < ic->nb_streams; i++) {
3693 int fps_analyze_framecount = 20;
3696 st = ic->streams[i];
3697 if (!has_codec_parameters(st, NULL))
3699 /* If the timebase is coarse (like the usual millisecond precision
3700 * of mkv), we need to analyze more frames to reliably arrive at
3701 * the correct fps. */
3702 if (av_q2d(st->time_base) > 0.0005)
3703 fps_analyze_framecount *= 2;
3704 if (!tb_unreliable(st->internal->avctx))
3705 fps_analyze_framecount = 0;
3706 if (ic->fps_probe_size >= 0)
3707 fps_analyze_framecount = ic->fps_probe_size;
3708 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3709 fps_analyze_framecount = 0;
3710 /* variable fps and no guess at the real fps */
3711 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3712 st->info->codec_info_duration_fields/2 :
3713 st->info->duration_count;
3714 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3715 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3716 if (count < fps_analyze_framecount)
3719 // Look at the first 3 frames if there is evidence of frame delay
3720 // but the decoder delay is not set.
3721 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3723 if (!st->internal->avctx->extradata &&
3724 (!st->internal->extract_extradata.inited ||
3725 st->internal->extract_extradata.bsf) &&
3726 extract_extradata_check(st))
3728 if (st->first_dts == AV_NOPTS_VALUE &&
3729 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3730 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3731 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3732 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3735 analyzed_all_streams = 0;
3736 if (!missing_streams || !*missing_streams)
3737 if (i == ic->nb_streams) {
3738 analyzed_all_streams = 1;
3739 /* NOTE: If the format has no header, then we need to read some
3740 * packets to get most of the streams, so we cannot stop here. */
3741 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3742 /* If we found the info for all the codecs, we can stop. */
3744 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3749 /* We did not get all the codec info, but we read too much data. */
3750 if (read_size >= probesize) {
3752 av_log(ic, AV_LOG_DEBUG,
3753 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3754 for (i = 0; i < ic->nb_streams; i++)
3755 if (!ic->streams[i]->r_frame_rate.num &&
3756 ic->streams[i]->info->duration_count <= 1 &&
3757 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3758 strcmp(ic->iformat->name, "image2"))
3759 av_log(ic, AV_LOG_WARNING,
3760 "Stream #%d: not enough frames to estimate rate; "
3761 "consider increasing probesize\n", i);
3765 /* NOTE: A new stream can be added there if no header in file
3766 * (AVFMTCTX_NOHEADER). */
3767 ret = read_frame_internal(ic, &pkt1);
3768 if (ret == AVERROR(EAGAIN))
3779 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3780 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3781 &ic->internal->packet_buffer_end,
3784 goto find_stream_info_err;
3787 st = ic->streams[pkt->stream_index];
3788 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3789 read_size += pkt->size;
3791 avctx = st->internal->avctx;
3792 if (!st->internal->avctx_inited) {
3793 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3795 goto find_stream_info_err;
3796 st->internal->avctx_inited = 1;
3799 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3800 /* check for non-increasing dts */
3801 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3802 st->info->fps_last_dts >= pkt->dts) {
3803 av_log(ic, AV_LOG_DEBUG,
3804 "Non-increasing DTS in stream %d: packet %d with DTS "
3805 "%"PRId64", packet %d with DTS %"PRId64"\n",
3806 st->index, st->info->fps_last_dts_idx,
3807 st->info->fps_last_dts, st->codec_info_nb_frames,
3809 st->info->fps_first_dts =
3810 st->info->fps_last_dts = AV_NOPTS_VALUE;
3812 /* Check for a discontinuity in dts. If the difference in dts
3813 * is more than 1000 times the average packet duration in the
3814 * sequence, we treat it as a discontinuity. */
3815 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3816 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3817 (pkt->dts - st->info->fps_last_dts) / 1000 >
3818 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3819 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3820 av_log(ic, AV_LOG_WARNING,
3821 "DTS discontinuity in stream %d: packet %d with DTS "
3822 "%"PRId64", packet %d with DTS %"PRId64"\n",
3823 st->index, st->info->fps_last_dts_idx,
3824 st->info->fps_last_dts, st->codec_info_nb_frames,
3826 st->info->fps_first_dts =
3827 st->info->fps_last_dts = AV_NOPTS_VALUE;
3830 /* update stored dts values */
3831 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3832 st->info->fps_first_dts = pkt->dts;
3833 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3835 st->info->fps_last_dts = pkt->dts;
3836 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3838 if (st->codec_info_nb_frames>1) {
3842 if (st->time_base.den > 0)
3843 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3844 if (st->avg_frame_rate.num > 0)
3845 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3848 && st->codec_info_nb_frames>30
3849 && st->info->fps_first_dts != AV_NOPTS_VALUE
3850 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3851 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3853 if (analyzed_all_streams) limit = max_analyze_duration;
3854 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3855 else limit = max_stream_analyze_duration;
3858 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3860 t, pkt->stream_index);
3861 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3862 av_packet_unref(pkt);
3865 if (pkt->duration) {
3866 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3867 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3869 st->info->codec_info_duration += pkt->duration;
3870 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3873 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3874 #if FF_API_R_FRAME_RATE
3875 ff_rfps_add_frame(ic, st, pkt->dts);
3877 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3878 st->info->frame_delay_evidence = 1;
3880 if (!st->internal->avctx->extradata) {
3881 ret = extract_extradata(st, pkt);
3883 goto find_stream_info_err;
3886 /* If still no information, we try to open the codec and to
3887 * decompress the frame. We try to avoid that in most cases as
3888 * it takes longer and uses more memory. For MPEG-4, we need to
3889 * decompress for QuickTime.
3891 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3892 * least one frame of codec data, this makes sure the codec initializes
3893 * the channel configuration and does not only trust the values from
3895 try_decode_frame(ic, st, pkt,
3896 (options && i < orig_nb_streams) ? &options[i] : NULL);
3898 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3899 av_packet_unref(pkt);
3901 st->codec_info_nb_frames++;
3907 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3908 st = ic->streams[stream_index];
3909 avctx = st->internal->avctx;
3910 if (!has_codec_parameters(st, NULL)) {
3911 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3912 if (codec && !avctx->codec) {
3913 AVDictionary *opts = NULL;
3914 if (ic->codec_whitelist)
3915 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3916 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3917 av_log(ic, AV_LOG_WARNING,
3918 "Failed to open codec in %s\n",__FUNCTION__);
3919 av_dict_free(&opts);
3923 // EOF already reached while reading the stream above.
3924 // So continue with reoordering DTS with whatever delay we have.
3925 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3926 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3932 AVPacket empty_pkt = { 0 };
3934 av_init_packet(&empty_pkt);
3936 for (i = 0; i < ic->nb_streams; i++) {
3938 st = ic->streams[i];
3940 /* flush the decoders */
3941 if (st->info->found_decoder == 1) {
3943 err = try_decode_frame(ic, st, &empty_pkt,
3944 (options && i < orig_nb_streams)
3945 ? &options[i] : NULL);
3946 } while (err > 0 && !has_codec_parameters(st, NULL));
3949 av_log(ic, AV_LOG_INFO,
3950 "decoding for stream %d failed\n", st->index);
3956 ff_rfps_calculate(ic);
3958 for (i = 0; i < ic->nb_streams; i++) {
3959 st = ic->streams[i];
3960 avctx = st->internal->avctx;
3961 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3962 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3963 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3964 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3965 avctx->codec_tag= tag;
3968 /* estimate average framerate if not set by demuxer */
3969 if (st->info->codec_info_duration_fields &&
3970 !st->avg_frame_rate.num &&
3971 st->info->codec_info_duration) {
3973 double best_error = 0.01;
3974 AVRational codec_frame_rate = avctx->framerate;
3976 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3977 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3978 st->info->codec_info_duration < 0)
3980 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3981 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3982 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3984 /* Round guessed framerate to a "standard" framerate if it's
3985 * within 1% of the original estimate. */
3986 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3987 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3988 double error = fabs(av_q2d(st->avg_frame_rate) /
3989 av_q2d(std_fps) - 1);
3991 if (error < best_error) {
3993 best_fps = std_fps.num;
3996 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
3997 error = fabs(av_q2d(codec_frame_rate) /
3998 av_q2d(std_fps) - 1);
3999 if (error < best_error) {
4001 best_fps = std_fps.num;
4006 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4007 best_fps, 12 * 1001, INT_MAX);
4010 if (!st->r_frame_rate.num) {
4011 if ( avctx->time_base.den * (int64_t) st->time_base.num
4012 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4013 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4014 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4016 st->r_frame_rate.num = st->time_base.den;
4017 st->r_frame_rate.den = st->time_base.num;
4020 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4021 AVRational hw_ratio = { avctx->height, avctx->width };
4022 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4025 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4026 if (!avctx->bits_per_coded_sample)
4027 avctx->bits_per_coded_sample =
4028 av_get_bits_per_sample(avctx->codec_id);
4029 // set stream disposition based on audio service type
4030 switch (avctx->audio_service_type) {
4031 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4032 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4034 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4035 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4037 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4038 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4040 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4041 st->disposition = AV_DISPOSITION_COMMENT;
4043 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4044 st->disposition = AV_DISPOSITION_KARAOKE;
4051 estimate_timings(ic, old_offset);
4053 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4055 if (ret >= 0 && ic->nb_streams)
4056 /* We could not have all the codec parameters before EOF. */
4058 for (i = 0; i < ic->nb_streams; i++) {
4060 st = ic->streams[i];
4062 /* if no packet was ever seen, update context now for has_codec_parameters */
4063 if (!st->internal->avctx_inited) {
4064 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4065 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4066 st->codecpar->format = st->internal->avctx->sample_fmt;
4067 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4069 goto find_stream_info_err;
4071 if (!has_codec_parameters(st, &errmsg)) {
4073 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4074 av_log(ic, AV_LOG_WARNING,
4075 "Could not find codec parameters for stream %d (%s): %s\n"
4076 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4083 compute_chapters_end(ic);
4085 /* update the stream parameters from the internal codec contexts */
4086 for (i = 0; i < ic->nb_streams; i++) {
4087 st = ic->streams[i];
4089 if (st->internal->avctx_inited) {
4090 int orig_w = st->codecpar->width;
4091 int orig_h = st->codecpar->height;
4092 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4094 goto find_stream_info_err;
4096 // The decoder might reduce the video size by the lowres factor.
4097 if (st->internal->avctx->lowres && orig_w) {
4098 st->codecpar->width = orig_w;
4099 st->codecpar->height = orig_h;
4104 #if FF_API_LAVF_AVCTX
4105 FF_DISABLE_DEPRECATION_WARNINGS
4106 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4108 goto find_stream_info_err;
4111 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4112 // by the lowres factor.
4113 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4114 st->codec->lowres = st->internal->avctx->lowres;
4115 st->codec->width = st->internal->avctx->width;
4116 st->codec->height = st->internal->avctx->height;
4120 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4121 st->codec->time_base = st->internal->avctx->time_base;
4122 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4124 st->codec->framerate = st->avg_frame_rate;
4126 if (st->internal->avctx->subtitle_header) {
4127 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4128 if (!st->codec->subtitle_header)
4129 goto find_stream_info_err;
4130 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4131 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4132 st->codec->subtitle_header_size);
4135 // Fields unavailable in AVCodecParameters
4136 st->codec->coded_width = st->internal->avctx->coded_width;
4137 st->codec->coded_height = st->internal->avctx->coded_height;
4138 st->codec->properties = st->internal->avctx->properties;
4139 FF_ENABLE_DEPRECATION_WARNINGS
4142 st->internal->avctx_inited = 0;
4145 find_stream_info_err:
4146 for (i = 0; i < ic->nb_streams; i++) {
4147 st = ic->streams[i];
4149 av_freep(&st->info->duration_error);
4150 avcodec_close(ic->streams[i]->internal->avctx);
4151 av_freep(&ic->streams[i]->info);
4152 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4153 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4156 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4157 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4161 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4165 for (i = 0; i < ic->nb_programs; i++) {
4166 if (ic->programs[i] == last) {
4170 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4171 if (ic->programs[i]->stream_index[j] == s)
4172 return ic->programs[i];
4178 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4179 int wanted_stream_nb, int related_stream,
4180 AVCodec **decoder_ret, int flags)
4182 int i, nb_streams = ic->nb_streams;
4183 int ret = AVERROR_STREAM_NOT_FOUND;
4184 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4185 int count, multiframe, disposition;
4186 int64_t best_bitrate = -1;
4188 unsigned *program = NULL;
4189 const AVCodec *decoder = NULL, *best_decoder = NULL;
4191 if (related_stream >= 0 && wanted_stream_nb < 0) {
4192 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4194 program = p->stream_index;
4195 nb_streams = p->nb_stream_indexes;
4198 for (i = 0; i < nb_streams; i++) {
4199 int real_stream_index = program ? program[i] : i;
4200 AVStream *st = ic->streams[real_stream_index];
4201 AVCodecParameters *par = st->codecpar;
4202 if (par->codec_type != type)
4204 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4206 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4209 decoder = find_decoder(ic, st, par->codec_id);
4212 ret = AVERROR_DECODER_NOT_FOUND;
4216 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED));
4217 count = st->codec_info_nb_frames;
4218 bitrate = par->bit_rate;
4219 multiframe = FFMIN(5, count);
4220 if ((best_disposition > disposition) ||
4221 (best_disposition == disposition && best_multiframe > multiframe) ||
4222 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4223 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4225 best_disposition = disposition;
4227 best_bitrate = bitrate;
4228 best_multiframe = multiframe;
4229 ret = real_stream_index;
4230 best_decoder = decoder;
4231 if (program && i == nb_streams - 1 && ret < 0) {
4233 nb_streams = ic->nb_streams;
4234 /* no related stream found, try again with everything */
4239 *decoder_ret = (AVCodec*)best_decoder;
4243 /*******************************************************/
4245 int av_read_play(AVFormatContext *s)
4247 if (s->iformat->read_play)
4248 return s->iformat->read_play(s);
4250 return avio_pause(s->pb, 0);
4251 return AVERROR(ENOSYS);
4254 int av_read_pause(AVFormatContext *s)
4256 if (s->iformat->read_pause)
4257 return s->iformat->read_pause(s);
4259 return avio_pause(s->pb, 1);
4260 return AVERROR(ENOSYS);
4263 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4268 dst->time_base = src->time_base;
4269 dst->nb_frames = src->nb_frames;
4270 dst->disposition = src->disposition;
4271 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4272 dst->avg_frame_rate = src->avg_frame_rate;
4273 dst->r_frame_rate = src->r_frame_rate;
4275 av_dict_free(&dst->metadata);
4276 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4280 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4284 /* Free existing side data*/
4285 for (i = 0; i < dst->nb_side_data; i++)
4286 av_free(dst->side_data[i].data);
4287 av_freep(&dst->side_data);
4288 dst->nb_side_data = 0;
4290 /* Copy side data if present */
4291 if (src->nb_side_data) {
4292 dst->side_data = av_mallocz_array(src->nb_side_data,
4293 sizeof(AVPacketSideData));
4294 if (!dst->side_data)
4295 return AVERROR(ENOMEM);
4296 dst->nb_side_data = src->nb_side_data;
4298 for (i = 0; i < src->nb_side_data; i++) {
4299 uint8_t *data = av_memdup(src->side_data[i].data,
4300 src->side_data[i].size);
4302 return AVERROR(ENOMEM);
4303 dst->side_data[i].type = src->side_data[i].type;
4304 dst->side_data[i].size = src->side_data[i].size;
4305 dst->side_data[i].data = data;
4309 #if FF_API_LAVF_FFSERVER
4310 FF_DISABLE_DEPRECATION_WARNINGS
4311 av_freep(&dst->recommended_encoder_configuration);
4312 if (src->recommended_encoder_configuration) {
4313 const char *conf_str = src->recommended_encoder_configuration;
4314 dst->recommended_encoder_configuration = av_strdup(conf_str);
4315 if (!dst->recommended_encoder_configuration)
4316 return AVERROR(ENOMEM);
4318 FF_ENABLE_DEPRECATION_WARNINGS
4324 static void free_stream(AVStream **pst)
4326 AVStream *st = *pst;
4332 for (i = 0; i < st->nb_side_data; i++)
4333 av_freep(&st->side_data[i].data);
4334 av_freep(&st->side_data);
4337 av_parser_close(st->parser);
4339 if (st->attached_pic.data)
4340 av_packet_unref(&st->attached_pic);
4343 avcodec_free_context(&st->internal->avctx);
4344 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4345 av_bsf_free(&st->internal->bsfcs[i]);
4346 av_freep(&st->internal->bsfcs);
4348 av_freep(&st->internal->priv_pts);
4349 av_bsf_free(&st->internal->extract_extradata.bsf);
4350 av_packet_free(&st->internal->extract_extradata.pkt);
4352 av_freep(&st->internal);
4354 av_dict_free(&st->metadata);
4355 avcodec_parameters_free(&st->codecpar);
4356 av_freep(&st->probe_data.buf);
4357 av_freep(&st->index_entries);
4358 #if FF_API_LAVF_AVCTX
4359 FF_DISABLE_DEPRECATION_WARNINGS
4360 avcodec_free_context(&st->codec);
4361 FF_ENABLE_DEPRECATION_WARNINGS
4363 av_freep(&st->priv_data);
4365 av_freep(&st->info->duration_error);
4366 av_freep(&st->info);
4367 #if FF_API_LAVF_FFSERVER
4368 FF_DISABLE_DEPRECATION_WARNINGS
4369 av_freep(&st->recommended_encoder_configuration);
4370 FF_ENABLE_DEPRECATION_WARNINGS
4376 void ff_free_stream(AVFormatContext *s, AVStream *st)
4378 av_assert0(s->nb_streams>0);
4379 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4381 free_stream(&s->streams[ --s->nb_streams ]);
4384 void avformat_free_context(AVFormatContext *s)
4392 if (s->iformat && s->iformat->priv_class && s->priv_data)
4393 av_opt_free(s->priv_data);
4394 if (s->oformat && s->oformat->priv_class && s->priv_data)
4395 av_opt_free(s->priv_data);
4397 for (i = s->nb_streams - 1; i >= 0; i--)
4398 ff_free_stream(s, s->streams[i]);
4401 for (i = s->nb_programs - 1; i >= 0; i--) {
4402 av_dict_free(&s->programs[i]->metadata);
4403 av_freep(&s->programs[i]->stream_index);
4404 av_freep(&s->programs[i]);
4406 av_freep(&s->programs);
4407 av_freep(&s->priv_data);
4408 while (s->nb_chapters--) {
4409 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4410 av_freep(&s->chapters[s->nb_chapters]);
4412 av_freep(&s->chapters);
4413 av_dict_free(&s->metadata);
4414 av_dict_free(&s->internal->id3v2_meta);
4415 av_freep(&s->streams);
4416 flush_packet_queue(s);
4417 av_freep(&s->internal);
4422 void avformat_close_input(AVFormatContext **ps)
4433 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4434 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4437 flush_packet_queue(s);
4440 if (s->iformat->read_close)
4441 s->iformat->read_close(s);
4443 avformat_free_context(s);
4450 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4456 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4457 if (s->max_streams < INT_MAX/sizeof(*streams))
4458 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);
4461 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4464 s->streams = streams;
4466 st = av_mallocz(sizeof(AVStream));
4469 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4473 st->info->last_dts = AV_NOPTS_VALUE;
4475 #if FF_API_LAVF_AVCTX
4476 FF_DISABLE_DEPRECATION_WARNINGS
4477 st->codec = avcodec_alloc_context3(c);
4483 FF_ENABLE_DEPRECATION_WARNINGS
4486 st->internal = av_mallocz(sizeof(*st->internal));
4490 st->codecpar = avcodec_parameters_alloc();
4494 st->internal->avctx = avcodec_alloc_context3(NULL);
4495 if (!st->internal->avctx)
4499 #if FF_API_LAVF_AVCTX
4500 FF_DISABLE_DEPRECATION_WARNINGS
4501 /* no default bitrate if decoding */
4502 st->codec->bit_rate = 0;
4503 FF_ENABLE_DEPRECATION_WARNINGS
4506 /* default pts setting is MPEG-like */
4507 avpriv_set_pts_info(st, 33, 1, 90000);
4508 /* we set the current DTS to 0 so that formats without any timestamps
4509 * but durations get some timestamps, formats with some unknown
4510 * timestamps have their first few packets buffered and the
4511 * timestamps corrected before they are returned to the user */
4512 st->cur_dts = RELATIVE_TS_BASE;
4514 st->cur_dts = AV_NOPTS_VALUE;
4517 st->index = s->nb_streams;
4518 st->start_time = AV_NOPTS_VALUE;
4519 st->duration = AV_NOPTS_VALUE;
4520 st->first_dts = AV_NOPTS_VALUE;
4521 st->probe_packets = MAX_PROBE_PACKETS;
4522 st->pts_wrap_reference = AV_NOPTS_VALUE;
4523 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4525 st->last_IP_pts = AV_NOPTS_VALUE;
4526 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4527 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4528 st->pts_buffer[i] = AV_NOPTS_VALUE;
4530 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4532 #if FF_API_R_FRAME_RATE
4533 st->info->last_dts = AV_NOPTS_VALUE;
4535 st->info->fps_first_dts = AV_NOPTS_VALUE;
4536 st->info->fps_last_dts = AV_NOPTS_VALUE;
4538 st->inject_global_side_data = s->internal->inject_global_side_data;
4540 st->internal->need_context_update = 1;
4542 s->streams[s->nb_streams++] = st;
4549 AVProgram *av_new_program(AVFormatContext *ac, int id)
4551 AVProgram *program = NULL;
4554 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4556 for (i = 0; i < ac->nb_programs; i++)
4557 if (ac->programs[i]->id == id)
4558 program = ac->programs[i];
4561 program = av_mallocz(sizeof(AVProgram));
4564 dynarray_add(&ac->programs, &ac->nb_programs, program);
4565 program->discard = AVDISCARD_NONE;
4568 program->pts_wrap_reference = AV_NOPTS_VALUE;
4569 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4571 program->start_time =
4572 program->end_time = AV_NOPTS_VALUE;
4577 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4578 int64_t start, int64_t end, const char *title)
4580 AVChapter *chapter = NULL;
4583 if (end != AV_NOPTS_VALUE && start > end) {
4584 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4588 for (i = 0; i < s->nb_chapters; i++)
4589 if (s->chapters[i]->id == id)
4590 chapter = s->chapters[i];
4593 chapter = av_mallocz(sizeof(AVChapter));
4596 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4598 av_dict_set(&chapter->metadata, "title", title, 0);
4600 chapter->time_base = time_base;
4601 chapter->start = start;
4607 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4610 AVProgram *program = NULL;
4613 if (idx >= ac->nb_streams) {
4614 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4618 for (i = 0; i < ac->nb_programs; i++) {
4619 if (ac->programs[i]->id != progid)
4621 program = ac->programs[i];
4622 for (j = 0; j < program->nb_stream_indexes; j++)
4623 if (program->stream_index[j] == idx)
4626 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4629 program->stream_index = tmp;
4630 program->stream_index[program->nb_stream_indexes++] = idx;
4635 uint64_t ff_ntp_time(void)
4637 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4640 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4643 char *q, buf1[20], c;
4644 int nd, len, percentd_found;
4656 while (av_isdigit(*p))
4657 nd = nd * 10 + *p++ - '0';
4659 } while (av_isdigit(c));
4665 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4670 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4672 if ((q - buf + len) > buf_size - 1)
4674 memcpy(q, buf1, len);
4682 if ((q - buf) < buf_size - 1)
4686 if (!percentd_found)
4695 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4697 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4700 void av_url_split(char *proto, int proto_size,
4701 char *authorization, int authorization_size,
4702 char *hostname, int hostname_size,
4703 int *port_ptr, char *path, int path_size, const char *url)
4705 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4711 if (authorization_size > 0)
4712 authorization[0] = 0;
4713 if (hostname_size > 0)
4718 /* parse protocol */
4719 if ((p = strchr(url, ':'))) {
4720 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4727 /* no protocol means plain filename */
4728 av_strlcpy(path, url, path_size);
4732 /* separate path from hostname */
4733 ls = strchr(p, '/');
4734 ls2 = strchr(p, '?');
4738 ls = FFMIN(ls, ls2);
4740 av_strlcpy(path, ls, path_size);
4742 ls = &p[strlen(p)]; // XXX
4744 /* the rest is hostname, use that to parse auth/port */
4746 /* authorization (user[:pass]@hostname) */
4748 while ((at = strchr(p, '@')) && at < ls) {
4749 av_strlcpy(authorization, at2,
4750 FFMIN(authorization_size, at + 1 - at2));
4751 p = at + 1; /* skip '@' */
4754 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4756 av_strlcpy(hostname, p + 1,
4757 FFMIN(hostname_size, brk - p));
4758 if (brk[1] == ':' && port_ptr)
4759 *port_ptr = atoi(brk + 2);
4760 } else if ((col = strchr(p, ':')) && col < ls) {
4761 av_strlcpy(hostname, p,
4762 FFMIN(col + 1 - p, hostname_size));
4764 *port_ptr = atoi(col + 1);
4766 av_strlcpy(hostname, p,
4767 FFMIN(ls + 1 - p, hostname_size));
4771 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4774 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4777 'C', 'D', 'E', 'F' };
4778 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4781 'c', 'd', 'e', 'f' };
4782 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4784 for (i = 0; i < s; i++) {
4785 buff[i * 2] = hex_table[src[i] >> 4];
4786 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4792 int ff_hex_to_data(uint8_t *data, const char *p)
4799 p += strspn(p, SPACE_CHARS);
4802 c = av_toupper((unsigned char) *p++);
4803 if (c >= '0' && c <= '9')
4805 else if (c >= 'A' && c <= 'F')
4820 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4821 unsigned int pts_num, unsigned int pts_den)
4824 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4825 if (new_tb.num != pts_num)
4826 av_log(NULL, AV_LOG_DEBUG,
4827 "st:%d removing common factor %d from timebase\n",
4828 s->index, pts_num / new_tb.num);
4830 av_log(NULL, AV_LOG_WARNING,
4831 "st:%d has too large timebase, reducing\n", s->index);
4833 if (new_tb.num <= 0 || new_tb.den <= 0) {
4834 av_log(NULL, AV_LOG_ERROR,
4835 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4836 new_tb.num, new_tb.den,
4840 s->time_base = new_tb;
4841 #if FF_API_LAVF_AVCTX
4842 FF_DISABLE_DEPRECATION_WARNINGS
4843 s->codec->pkt_timebase = new_tb;
4844 FF_ENABLE_DEPRECATION_WARNINGS
4846 s->internal->avctx->pkt_timebase = new_tb;
4847 s->pts_wrap_bits = pts_wrap_bits;
4850 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4853 const char *ptr = str;
4855 /* Parse key=value pairs. */
4858 char *dest = NULL, *dest_end;
4859 int key_len, dest_len = 0;
4861 /* Skip whitespace and potential commas. */
4862 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4869 if (!(ptr = strchr(key, '=')))
4872 key_len = ptr - key;
4874 callback_get_buf(context, key, key_len, &dest, &dest_len);
4875 dest_end = dest + dest_len - 1;
4879 while (*ptr && *ptr != '\"') {
4883 if (dest && dest < dest_end)
4887 if (dest && dest < dest_end)
4895 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4896 if (dest && dest < dest_end)
4904 int ff_find_stream_index(AVFormatContext *s, int id)
4907 for (i = 0; i < s->nb_streams; i++)
4908 if (s->streams[i]->id == id)
4913 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4917 unsigned int codec_tag;
4918 if (ofmt->query_codec)
4919 return ofmt->query_codec(codec_id, std_compliance);
4920 else if (ofmt->codec_tag)
4921 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4922 else if (codec_id == ofmt->video_codec ||
4923 codec_id == ofmt->audio_codec ||
4924 codec_id == ofmt->subtitle_codec ||
4925 codec_id == ofmt->data_codec)
4928 return AVERROR_PATCHWELCOME;
4931 int avformat_network_init(void)
4935 if ((ret = ff_network_init()) < 0)
4937 if ((ret = ff_tls_init()) < 0)
4943 int avformat_network_deinit(void)
4952 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4953 uint64_t channel_layout, int32_t sample_rate,
4954 int32_t width, int32_t height)
4960 return AVERROR(EINVAL);
4963 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4965 if (channel_layout) {
4967 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4971 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4973 if (width || height) {
4975 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4977 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4979 return AVERROR(ENOMEM);
4980 bytestream_put_le32(&data, flags);
4982 bytestream_put_le32(&data, channels);
4984 bytestream_put_le64(&data, channel_layout);
4986 bytestream_put_le32(&data, sample_rate);
4987 if (width || height) {
4988 bytestream_put_le32(&data, width);
4989 bytestream_put_le32(&data, height);
4994 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4996 AVRational undef = {0, 1};
4997 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4998 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4999 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5001 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5002 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5003 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5004 stream_sample_aspect_ratio = undef;
5006 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5007 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5008 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5009 frame_sample_aspect_ratio = undef;
5011 if (stream_sample_aspect_ratio.num)
5012 return stream_sample_aspect_ratio;
5014 return frame_sample_aspect_ratio;
5017 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5019 AVRational fr = st->r_frame_rate;
5020 AVRational codec_fr = st->internal->avctx->framerate;
5021 AVRational avg_fr = st->avg_frame_rate;
5023 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5024 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5029 if (st->internal->avctx->ticks_per_frame > 1) {
5030 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5031 (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))
5038 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5041 if (*spec <= '9' && *spec >= '0') /* opt:index */
5042 return strtol(spec, NULL, 0) == st->index;
5043 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5044 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5045 enum AVMediaType type;
5049 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5050 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5051 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5052 case 'd': type = AVMEDIA_TYPE_DATA; break;
5053 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5054 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5055 default: av_assert0(0);
5057 #if FF_API_LAVF_AVCTX
5058 FF_DISABLE_DEPRECATION_WARNINGS
5059 if (type != st->codecpar->codec_type
5060 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5062 FF_ENABLE_DEPRECATION_WARNINGS
5064 if (type != st->codecpar->codec_type)
5067 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5069 if (*spec++ == ':') { /* possibly followed by :index */
5070 int i, index = strtol(spec, NULL, 0);
5071 for (i = 0; i < s->nb_streams; i++) {
5072 #if FF_API_LAVF_AVCTX
5073 FF_DISABLE_DEPRECATION_WARNINGS
5074 if ((s->streams[i]->codecpar->codec_type == type
5075 || s->streams[i]->codec->codec_type == type
5077 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5079 return i == st->index;
5080 FF_ENABLE_DEPRECATION_WARNINGS
5082 if ((s->streams[i]->codecpar->codec_type == type) &&
5083 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5085 return i == st->index;
5091 } else if (*spec == 'p' && *(spec + 1) == ':') {
5095 prog_id = strtol(spec, &endptr, 0);
5096 for (i = 0; i < s->nb_programs; i++) {
5097 if (s->programs[i]->id != prog_id)
5100 if (*endptr++ == ':') { // p:<id>:....
5101 if ( *endptr == 'a' || *endptr == 'v' ||
5102 *endptr == 's' || *endptr == 'd') { // p:<id>:<st_type>[:<index>]
5103 enum AVMediaType type;
5105 switch (*endptr++) {
5106 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5107 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5108 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5109 case 'd': type = AVMEDIA_TYPE_DATA; break;
5110 default: av_assert0(0);
5112 if (*endptr++ == ':') { // p:<id>:<st_type>:<index>
5113 int stream_idx = strtol(endptr, NULL, 0), type_counter = 0;
5114 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5115 int stream_index = s->programs[i]->stream_index[j];
5116 if (st->index == s->programs[i]->stream_index[j]) {
5117 #if FF_API_LAVF_AVCTX
5118 FF_DISABLE_DEPRECATION_WARNINGS
5119 return type_counter == stream_idx &&
5120 (type == st->codecpar->codec_type ||
5121 type == st->codec->codec_type);
5122 FF_ENABLE_DEPRECATION_WARNINGS
5124 return type_counter == stream_idx &&
5125 type == st->codecpar->codec_type;
5128 #if FF_API_LAVF_AVCTX
5129 FF_DISABLE_DEPRECATION_WARNINGS
5130 if (type == s->streams[stream_index]->codecpar->codec_type ||
5131 type == s->streams[stream_index]->codec->codec_type)
5133 FF_ENABLE_DEPRECATION_WARNINGS
5135 if (type == s->streams[stream_index]->codecpar->codec_type)
5140 } else { // p:<id>:<st_type>
5141 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5142 if (st->index == s->programs[i]->stream_index[j]) {
5143 #if FF_API_LAVF_AVCTX
5144 FF_DISABLE_DEPRECATION_WARNINGS
5145 return type == st->codecpar->codec_type ||
5146 type == st->codec->codec_type;
5147 FF_ENABLE_DEPRECATION_WARNINGS
5149 return type == st->codecpar->codec_type;
5155 } else if ( *endptr == 'm') { // p:<id>:m:<metadata_spec>
5156 AVDictionaryEntry *tag;
5160 if (*(++endptr) != ':') {
5161 av_log(s, AV_LOG_ERROR, "Invalid stream specifier syntax, missing ':' sign after :m.\n");
5162 return AVERROR(EINVAL);
5165 val = strchr(++endptr, ':');
5166 key = val ? av_strndup(endptr, val - endptr) : av_strdup(endptr);
5168 return AVERROR(ENOMEM);
5170 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5171 if (st->index == s->programs[i]->stream_index[j]) {
5172 tag = av_dict_get(st->metadata, key, NULL, 0);
5173 if (tag && (!val || !strcmp(tag->value, val + 1)))
5182 } else { // p:<id>:<index>
5183 int stream_idx = strtol(endptr, NULL, 0);
5184 return stream_idx >= 0 &&
5185 stream_idx < s->programs[i]->nb_stream_indexes &&
5186 st->index == s->programs[i]->stream_index[stream_idx];
5190 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5191 if (st->index == s->programs[i]->stream_index[j])
5195 } else if (*spec == '#' ||
5196 (*spec == 'i' && *(spec + 1) == ':')) {
5199 spec += 1 + (*spec == 'i');
5200 stream_id = strtol(spec, &endptr, 0);
5202 return stream_id == st->id;
5203 } else if (*spec == 'm' && *(spec + 1) == ':') {
5204 AVDictionaryEntry *tag;
5209 val = strchr(spec, ':');
5211 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5213 return AVERROR(ENOMEM);
5215 tag = av_dict_get(st->metadata, key, NULL, 0);
5217 if (!val || !strcmp(tag->value, val + 1))
5226 } else if (*spec == 'u') {
5227 AVCodecParameters *par = st->codecpar;
5228 #if FF_API_LAVF_AVCTX
5229 FF_DISABLE_DEPRECATION_WARNINGS
5230 AVCodecContext *codec = st->codec;
5231 FF_ENABLE_DEPRECATION_WARNINGS
5234 switch (par->codec_type) {
5235 case AVMEDIA_TYPE_AUDIO:
5236 val = par->sample_rate && par->channels;
5237 #if FF_API_LAVF_AVCTX
5238 val = val || (codec->sample_rate && codec->channels);
5240 if (par->format == AV_SAMPLE_FMT_NONE
5241 #if FF_API_LAVF_AVCTX
5242 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5247 case AVMEDIA_TYPE_VIDEO:
5248 val = par->width && par->height;
5249 #if FF_API_LAVF_AVCTX
5250 val = val || (codec->width && codec->height);
5252 if (par->format == AV_PIX_FMT_NONE
5253 #if FF_API_LAVF_AVCTX
5254 && codec->pix_fmt == AV_PIX_FMT_NONE
5259 case AVMEDIA_TYPE_UNKNOWN:
5266 #if FF_API_LAVF_AVCTX
5267 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
5269 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
5271 } else if (!*spec) /* empty specifier, matches everything */
5274 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5275 return AVERROR(EINVAL);
5278 int ff_generate_avci_extradata(AVStream *st)
5280 static const uint8_t avci100_1080p_extradata[] = {
5282 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5283 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5284 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5285 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5286 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5287 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5288 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5289 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5290 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5292 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5295 static const uint8_t avci100_1080i_extradata[] = {
5297 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5298 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5299 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5300 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5301 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5302 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5303 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5304 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5305 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5306 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5307 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5309 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5312 static const uint8_t avci50_1080p_extradata[] = {
5314 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5315 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5316 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5317 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5318 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5319 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5320 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5321 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5322 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5324 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5327 static const uint8_t avci50_1080i_extradata[] = {
5329 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5330 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5331 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5332 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5333 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5334 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5335 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5336 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5337 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5338 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5339 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5341 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5344 static const uint8_t avci100_720p_extradata[] = {
5346 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5347 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5348 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5349 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5350 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5351 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5352 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5353 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5354 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5355 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5357 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5360 static const uint8_t avci50_720p_extradata[] = {
5362 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5363 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5364 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5365 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5366 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5367 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5368 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5369 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5370 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5372 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5376 const uint8_t *data = NULL;
5379 if (st->codecpar->width == 1920) {
5380 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5381 data = avci100_1080p_extradata;
5382 size = sizeof(avci100_1080p_extradata);
5384 data = avci100_1080i_extradata;
5385 size = sizeof(avci100_1080i_extradata);
5387 } else if (st->codecpar->width == 1440) {
5388 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5389 data = avci50_1080p_extradata;
5390 size = sizeof(avci50_1080p_extradata);
5392 data = avci50_1080i_extradata;
5393 size = sizeof(avci50_1080i_extradata);
5395 } else if (st->codecpar->width == 1280) {
5396 data = avci100_720p_extradata;
5397 size = sizeof(avci100_720p_extradata);
5398 } else if (st->codecpar->width == 960) {
5399 data = avci50_720p_extradata;
5400 size = sizeof(avci50_720p_extradata);
5406 av_freep(&st->codecpar->extradata);
5407 if (ff_alloc_extradata(st->codecpar, size))
5408 return AVERROR(ENOMEM);
5409 memcpy(st->codecpar->extradata, data, size);
5414 uint8_t *av_stream_get_side_data(const AVStream *st,
5415 enum AVPacketSideDataType type, int *size)
5419 for (i = 0; i < st->nb_side_data; i++) {
5420 if (st->side_data[i].type == type) {
5422 *size = st->side_data[i].size;
5423 return st->side_data[i].data;
5429 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5430 uint8_t *data, size_t size)
5432 AVPacketSideData *sd, *tmp;
5435 for (i = 0; i < st->nb_side_data; i++) {
5436 sd = &st->side_data[i];
5438 if (sd->type == type) {
5439 av_freep(&sd->data);
5446 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5447 return AVERROR(ERANGE);
5449 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5451 return AVERROR(ENOMEM);
5454 st->side_data = tmp;
5457 sd = &st->side_data[st->nb_side_data - 1];
5465 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5469 uint8_t *data = av_malloc(size);
5474 ret = av_stream_add_side_data(st, type, data, size);
5483 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5486 const AVBitStreamFilter *bsf;
5488 AVCodecParameters *in_par;
5490 if (!(bsf = av_bsf_get_by_name(name))) {
5491 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5492 return AVERROR_BSF_NOT_FOUND;
5495 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5498 if (st->internal->nb_bsfcs) {
5499 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5500 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5502 in_par = st->codecpar;
5503 bsfc->time_base_in = st->time_base;
5506 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5511 if (args && bsfc->filter->priv_class) {
5512 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5513 const char * shorthand[2] = {NULL};
5516 shorthand[0] = opt->name;
5518 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5524 if ((ret = av_bsf_init(bsfc)) < 0) {
5529 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5534 av_log(NULL, AV_LOG_VERBOSE,
5535 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5536 name, args ? args : "");
5541 FF_DISABLE_DEPRECATION_WARNINGS
5542 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5543 AVBitStreamFilterContext *bsfc)
5547 AVPacket new_pkt = *pkt;
5548 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5549 &new_pkt.data, &new_pkt.size,
5550 pkt->data, pkt->size,
5551 pkt->flags & AV_PKT_FLAG_KEY);
5552 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5553 av_packet_unref(pkt);
5554 memset(pkt, 0, sizeof(*pkt));
5557 if(a == 0 && new_pkt.data != pkt->data) {
5558 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
5560 memcpy(t, new_pkt.data, new_pkt.size);
5561 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5566 a = AVERROR(ENOMEM);
5570 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5571 av_buffer_default_free, NULL, 0);
5573 pkt->side_data = NULL;
5574 pkt->side_data_elems = 0;
5575 av_packet_unref(pkt);
5577 av_freep(&new_pkt.data);
5578 a = AVERROR(ENOMEM);
5582 av_log(codec, AV_LOG_ERROR,
5583 "Failed to open bitstream filter %s for stream %d with codec %s",
5584 bsfc->filter->name, pkt->stream_index,
5585 codec->codec ? codec->codec->name : "copy");
5595 FF_ENABLE_DEPRECATION_WARNINGS
5598 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5601 return AVERROR(EINVAL);
5603 if (!(s->oformat->flags & AVFMT_NOFILE))
5604 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5608 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5611 s->io_close(s, *pb);
5615 int ff_is_http_proto(char *filename) {
5616 const char *proto = avio_find_protocol_name(filename);
5617 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5620 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5622 AVDictionaryEntry *entry;
5623 int64_t parsed_timestamp;
5625 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5626 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5627 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5630 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5637 int ff_standardize_creation_time(AVFormatContext *s)
5640 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5642 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5646 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5651 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5653 if (size != AVPALETTE_SIZE) {
5654 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5655 return AVERROR_INVALIDDATA;
5657 memcpy(palette, side_data, AVPALETTE_SIZE);
5661 if (ret == CONTAINS_PAL) {
5663 for (i = 0; i < AVPALETTE_COUNT; i++)
5664 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5671 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5676 ret = av_bprint_finalize(buf, &str);
5679 if (!av_bprint_is_complete(buf)) {
5681 return AVERROR(ENOMEM);
5684 par->extradata = str;
5685 /* Note: the string is NUL terminated (so extradata can be read as a
5686 * string), but the ending character is not accounted in the size (in
5687 * binary formats you are likely not supposed to mux that character). When
5688 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5690 par->extradata_size = buf->len;
5694 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5695 AVStream *ost, const AVStream *ist,
5696 enum AVTimebaseSource copy_tb)
5698 //TODO: use [io]st->internal->avctx
5699 const AVCodecContext *dec_ctx = ist->codec;
5700 AVCodecContext *enc_ctx = ost->codec;
5702 enc_ctx->time_base = ist->time_base;
5704 * Avi is a special case here because it supports variable fps but
5705 * having the fps and timebase differe significantly adds quite some
5708 if (!strcmp(ofmt->name, "avi")) {
5709 #if FF_API_R_FRAME_RATE
5710 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5711 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5712 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5713 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5714 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5715 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5716 enc_ctx->time_base.num = ist->r_frame_rate.den;
5717 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5718 enc_ctx->ticks_per_frame = 2;
5721 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5722 && av_q2d(ist->time_base) < 1.0/500
5723 || copy_tb == AVFMT_TBCF_DECODER) {
5724 enc_ctx->time_base = dec_ctx->time_base;
5725 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5726 enc_ctx->time_base.den *= 2;
5727 enc_ctx->ticks_per_frame = 2;
5729 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5730 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5731 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5732 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5733 && av_q2d(ist->time_base) < 1.0/500
5734 || copy_tb == AVFMT_TBCF_DECODER) {
5735 enc_ctx->time_base = dec_ctx->time_base;
5736 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5740 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5741 && dec_ctx->time_base.num < dec_ctx->time_base.den
5742 && dec_ctx->time_base.num > 0
5743 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5744 enc_ctx->time_base = dec_ctx->time_base;
5747 if (ost->avg_frame_rate.num)
5748 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5750 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5751 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5756 AVRational av_stream_get_codec_timebase(const AVStream *st)
5758 // See avformat_transfer_internal_stream_timing_info() TODO.
5759 #if FF_API_LAVF_AVCTX
5760 FF_DISABLE_DEPRECATION_WARNINGS
5761 return st->codec->time_base;
5762 FF_ENABLE_DEPRECATION_WARNINGS
5764 return st->internal->avctx->time_base;
5768 void ff_format_set_url(AVFormatContext *s, char *url)
5773 #if FF_API_FORMAT_FILENAME
5774 FF_DISABLE_DEPRECATION_WARNINGS
5775 av_strlcpy(s->filename, url, sizeof(s->filename));
5776 FF_ENABLE_DEPRECATION_WARNINGS