2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/thread.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
63 * various utility functions for use within FFmpeg
66 unsigned avformat_version(void)
68 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
69 return LIBAVFORMAT_VERSION_INT;
72 const char *avformat_configuration(void)
74 return FFMPEG_CONFIGURATION;
77 const char *avformat_license(void)
79 #define LICENSE_PREFIX "libavformat license: "
80 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
83 int ff_lock_avformat(void)
85 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
88 int ff_unlock_avformat(void)
90 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
93 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
95 static int is_relative(int64_t ts) {
96 return ts > (RELATIVE_TS_BASE - (1LL<<48));
100 * Wrap a given time stamp, if there is an indication for an overflow
103 * @param timestamp the time stamp to wrap
104 * @return resulting time stamp
106 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
108 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
109 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
110 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
111 timestamp < st->pts_wrap_reference)
112 return timestamp + (1ULL << st->pts_wrap_bits);
113 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
114 timestamp >= st->pts_wrap_reference)
115 return timestamp - (1ULL << st->pts_wrap_bits);
120 #if FF_API_FORMAT_GET_SET
121 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
122 #if FF_API_LAVF_FFSERVER
123 FF_DISABLE_DEPRECATION_WARNINGS
124 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
125 FF_ENABLE_DEPRECATION_WARNINGS
127 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
128 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
129 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
130 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
131 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
132 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
133 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
134 #if FF_API_OLD_OPEN_CALLBACKS
135 FF_DISABLE_DEPRECATION_WARNINGS
136 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
137 FF_ENABLE_DEPRECATION_WARNINGS
141 int64_t av_stream_get_end_pts(const AVStream *st)
143 if (st->internal->priv_pts) {
144 return st->internal->priv_pts->val;
146 return AV_NOPTS_VALUE;
149 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
154 void av_format_inject_global_side_data(AVFormatContext *s)
157 s->internal->inject_global_side_data = 1;
158 for (i = 0; i < s->nb_streams; i++) {
159 AVStream *st = s->streams[i];
160 st->inject_global_side_data = 1;
164 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
166 av_assert0(!dst->codec_whitelist &&
167 !dst->format_whitelist &&
168 !dst->protocol_whitelist &&
169 !dst->protocol_blacklist);
170 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
171 dst->format_whitelist = av_strdup(src->format_whitelist);
172 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
173 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
174 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 || (src-> format_whitelist && !dst-> format_whitelist)
176 || (src->protocol_whitelist && !dst->protocol_whitelist)
177 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
178 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
179 return AVERROR(ENOMEM);
184 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
186 #if FF_API_LAVF_AVCTX
187 FF_DISABLE_DEPRECATION_WARNINGS
188 if (st->codec->codec)
189 return st->codec->codec;
190 FF_ENABLE_DEPRECATION_WARNINGS
193 switch (st->codecpar->codec_type) {
194 case AVMEDIA_TYPE_VIDEO:
195 if (s->video_codec) return s->video_codec;
197 case AVMEDIA_TYPE_AUDIO:
198 if (s->audio_codec) return s->audio_codec;
200 case AVMEDIA_TYPE_SUBTITLE:
201 if (s->subtitle_codec) return s->subtitle_codec;
205 return avcodec_find_decoder(codec_id);
208 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
210 const AVCodec *codec;
212 #if CONFIG_H264_DECODER
213 /* Other parts of the code assume this decoder to be used for h264,
214 * so force it if possible. */
215 if (codec_id == AV_CODEC_ID_H264)
216 return avcodec_find_decoder_by_name("h264");
219 codec = find_decoder(s, st, codec_id);
223 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
224 const AVCodec *probe_codec = NULL;
225 while (probe_codec = av_codec_next(probe_codec)) {
226 if (probe_codec->id == codec_id &&
227 av_codec_is_decoder(probe_codec) &&
228 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
237 #if FF_API_FORMAT_GET_SET
238 int av_format_get_probe_score(const AVFormatContext *s)
240 return s->probe_score;
244 /* an arbitrarily chosen "sane" max packet size -- 50M */
245 #define SANE_CHUNK_SIZE (50000000)
247 int ffio_limit(AVIOContext *s, int size)
249 if (s->maxsize>= 0) {
250 int64_t remaining= s->maxsize - avio_tell(s);
251 if (remaining < size) {
252 int64_t newsize = avio_size(s);
253 if (!s->maxsize || s->maxsize<newsize)
254 s->maxsize = newsize - !newsize;
255 remaining= s->maxsize - avio_tell(s);
256 remaining= FFMAX(remaining, 0);
259 if (s->maxsize>= 0 && remaining+1 < size) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
267 /* Read the data in sane-sized chunks and append to pkt.
268 * Return the number of bytes read or an error. */
269 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
271 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
272 int orig_size = pkt->size;
276 int prev_size = pkt->size;
279 /* When the caller requests a lot of data, limit it to the amount
280 * left in file or SANE_CHUNK_SIZE when it is not known. */
282 if (read_size > SANE_CHUNK_SIZE/10) {
283 read_size = ffio_limit(s, read_size);
284 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
286 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
289 ret = av_grow_packet(pkt, read_size);
293 ret = avio_read(s, pkt->data + prev_size, read_size);
294 if (ret != read_size) {
295 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
302 pkt->flags |= AV_PKT_FLAG_CORRUPT;
306 av_packet_unref(pkt);
307 return pkt->size > orig_size ? pkt->size - orig_size : ret;
310 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
315 pkt->pos = avio_tell(s);
317 return append_packet_chunked(s, pkt, size);
320 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 return append_packet_chunked(s, pkt, size);
327 int av_filename_number_test(const char *filename)
331 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
334 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
337 static const struct {
340 enum AVMediaType type;
342 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
343 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
344 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
345 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
346 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
347 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
348 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
349 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
350 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
351 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
352 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
353 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
354 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
355 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
356 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
360 const AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
364 av_log(s, AV_LOG_DEBUG,
365 "Probe with size=%d, packets=%d detected %s with score=%d\n",
366 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
368 for (i = 0; fmt_id_type[i].name; i++) {
369 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
370 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
371 st->codecpar->sample_rate)
373 if (st->request_probe > score &&
374 st->codecpar->codec_id != fmt_id_type[i].id)
376 st->codecpar->codec_id = fmt_id_type[i].id;
377 st->codecpar->codec_type = fmt_id_type[i].type;
378 st->internal->need_context_update = 1;
379 #if FF_API_LAVF_AVCTX
380 FF_DISABLE_DEPRECATION_WARNINGS
381 st->codec->codec_type = st->codecpar->codec_type;
382 st->codec->codec_id = st->codecpar->codec_id;
383 FF_ENABLE_DEPRECATION_WARNINGS
392 /************************************************************/
393 /* input media file */
395 int av_demuxer_open(AVFormatContext *ic) {
398 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
399 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
400 return AVERROR(EINVAL);
403 if (ic->iformat->read_header) {
404 err = ic->iformat->read_header(ic);
409 if (ic->pb && !ic->internal->data_offset)
410 ic->internal->data_offset = avio_tell(ic->pb);
415 /* Open input file and probe the format if necessary. */
416 static int init_input(AVFormatContext *s, const char *filename,
417 AVDictionary **options)
420 AVProbeData pd = { filename, NULL, 0 };
421 int score = AVPROBE_SCORE_RETRY;
424 s->flags |= AVFMT_FLAG_CUSTOM_IO;
426 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
427 s, 0, s->format_probesize);
428 else if (s->iformat->flags & AVFMT_NOFILE)
429 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
430 "will be ignored with AVFMT_NOFILE format.\n");
434 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
435 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
438 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
443 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
444 s, 0, s->format_probesize);
447 int ff_packet_list_put(AVPacketList **packet_buffer,
448 AVPacketList **plast_pktl,
449 AVPacket *pkt, int flags)
451 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
455 return AVERROR(ENOMEM);
457 if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
458 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
463 ret = av_packet_make_refcounted(pkt);
468 av_packet_move_ref(&pktl->pkt, pkt);
472 (*plast_pktl)->next = pktl;
474 *packet_buffer = pktl;
476 /* Add the packet in the buffered packet list. */
481 int avformat_queue_attached_pictures(AVFormatContext *s)
484 for (i = 0; i < s->nb_streams; i++)
485 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
486 s->streams[i]->discard < AVDISCARD_ALL) {
487 if (s->streams[i]->attached_pic.size <= 0) {
488 av_log(s, AV_LOG_WARNING,
489 "Attached picture on stream %d has invalid size, "
494 ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
495 &s->internal->raw_packet_buffer_end,
496 &s->streams[i]->attached_pic,
497 FF_PACKETLIST_FLAG_REF_PACKET);
504 static int update_stream_avctx(AVFormatContext *s)
507 for (i = 0; i < s->nb_streams; i++) {
508 AVStream *st = s->streams[i];
510 if (!st->internal->need_context_update)
513 /* close parser, because it depends on the codec */
514 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
515 av_parser_close(st->parser);
519 /* update internal codec context, for the parser */
520 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
524 #if FF_API_LAVF_AVCTX
525 FF_DISABLE_DEPRECATION_WARNINGS
526 /* update deprecated public codec context */
527 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
530 FF_ENABLE_DEPRECATION_WARNINGS
533 st->internal->need_context_update = 0;
539 int avformat_open_input(AVFormatContext **ps, const char *filename,
540 ff_const59 AVInputFormat *fmt, AVDictionary **options)
542 AVFormatContext *s = *ps;
544 AVDictionary *tmp = NULL;
545 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
547 if (!s && !(s = avformat_alloc_context()))
548 return AVERROR(ENOMEM);
550 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
551 return AVERROR(EINVAL);
557 av_dict_copy(&tmp, *options, 0);
559 if (s->pb) // must be before any goto fail
560 s->flags |= AVFMT_FLAG_CUSTOM_IO;
562 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
565 if (!(s->url = av_strdup(filename ? filename : ""))) {
566 ret = AVERROR(ENOMEM);
570 #if FF_API_FORMAT_FILENAME
571 FF_DISABLE_DEPRECATION_WARNINGS
572 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
573 FF_ENABLE_DEPRECATION_WARNINGS
575 if ((ret = init_input(s, filename, &tmp)) < 0)
577 s->probe_score = ret;
579 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
580 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
581 if (!s->protocol_whitelist) {
582 ret = AVERROR(ENOMEM);
587 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
588 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
589 if (!s->protocol_blacklist) {
590 ret = AVERROR(ENOMEM);
595 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
596 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
597 ret = AVERROR(EINVAL);
601 avio_skip(s->pb, s->skip_initial_bytes);
603 /* Check filename in case an image number is expected. */
604 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
605 if (!av_filename_number_test(filename)) {
606 ret = AVERROR(EINVAL);
611 s->duration = s->start_time = AV_NOPTS_VALUE;
613 /* Allocate private data. */
614 if (s->iformat->priv_data_size > 0) {
615 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
616 ret = AVERROR(ENOMEM);
619 if (s->iformat->priv_class) {
620 *(const AVClass **) s->priv_data = s->iformat->priv_class;
621 av_opt_set_defaults(s->priv_data);
622 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
627 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
629 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
632 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
633 if ((ret = s->iformat->read_header(s)) < 0)
637 s->metadata = s->internal->id3v2_meta;
638 s->internal->id3v2_meta = NULL;
639 } else if (s->internal->id3v2_meta) {
640 int level = AV_LOG_WARNING;
641 if (s->error_recognition & AV_EF_COMPLIANT)
642 level = AV_LOG_ERROR;
643 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
644 av_dict_free(&s->internal->id3v2_meta);
645 if (s->error_recognition & AV_EF_EXPLODE)
646 return AVERROR_INVALIDDATA;
649 if (id3v2_extra_meta) {
650 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
651 !strcmp(s->iformat->name, "tta") || !strcmp(s->iformat->name, "wav")) {
652 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
654 if ((ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0)
656 if ((ret = ff_id3v2_parse_priv(s, &id3v2_extra_meta)) < 0)
659 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
661 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
663 if ((ret = avformat_queue_attached_pictures(s)) < 0)
666 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
667 s->internal->data_offset = avio_tell(s->pb);
669 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
671 update_stream_avctx(s);
673 for (i = 0; i < s->nb_streams; i++)
674 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
677 av_dict_free(options);
684 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
686 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
688 avformat_free_context(s);
693 /*******************************************************/
695 static void force_codec_ids(AVFormatContext *s, AVStream *st)
697 switch (st->codecpar->codec_type) {
698 case AVMEDIA_TYPE_VIDEO:
699 if (s->video_codec_id)
700 st->codecpar->codec_id = s->video_codec_id;
702 case AVMEDIA_TYPE_AUDIO:
703 if (s->audio_codec_id)
704 st->codecpar->codec_id = s->audio_codec_id;
706 case AVMEDIA_TYPE_SUBTITLE:
707 if (s->subtitle_codec_id)
708 st->codecpar->codec_id = s->subtitle_codec_id;
710 case AVMEDIA_TYPE_DATA:
711 if (s->data_codec_id)
712 st->codecpar->codec_id = s->data_codec_id;
717 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
719 if (st->request_probe>0) {
720 AVProbeData *pd = &st->probe_data;
722 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
726 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
728 av_log(s, AV_LOG_WARNING,
729 "Failed to reallocate probe buffer for stream %d\n",
734 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
735 pd->buf_size += pkt->size;
736 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
739 st->probe_packets = 0;
741 av_log(s, AV_LOG_WARNING,
742 "nothing to probe for stream %d\n", st->index);
746 end= s->internal->raw_packet_buffer_remaining_size <= 0
747 || st->probe_packets<= 0;
749 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
750 int score = set_codec_from_probe_data(s, st, pd);
751 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
755 st->request_probe = -1;
756 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
757 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
759 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
761 force_codec_ids(s, st);
767 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
769 int64_t ref = pkt->dts;
770 int i, pts_wrap_behavior;
771 int64_t pts_wrap_reference;
772 AVProgram *first_program;
774 if (ref == AV_NOPTS_VALUE)
776 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
778 ref &= (1LL << st->pts_wrap_bits)-1;
780 // reference time stamp should be 60 s before first time stamp
781 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
782 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
783 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
784 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
785 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
787 first_program = av_find_program_from_stream(s, NULL, stream_index);
789 if (!first_program) {
790 int default_stream_index = av_find_default_stream_index(s);
791 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
792 for (i = 0; i < s->nb_streams; i++) {
793 if (av_find_program_from_stream(s, NULL, i))
795 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
796 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
800 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
801 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
805 AVProgram *program = first_program;
807 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
808 pts_wrap_reference = program->pts_wrap_reference;
809 pts_wrap_behavior = program->pts_wrap_behavior;
812 program = av_find_program_from_stream(s, program, stream_index);
815 // update every program with differing pts_wrap_reference
816 program = first_program;
818 if (program->pts_wrap_reference != pts_wrap_reference) {
819 for (i = 0; i<program->nb_stream_indexes; i++) {
820 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
821 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
824 program->pts_wrap_reference = pts_wrap_reference;
825 program->pts_wrap_behavior = pts_wrap_behavior;
827 program = av_find_program_from_stream(s, program, stream_index);
833 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
839 AVPacketList *pktl = s->internal->raw_packet_buffer;
840 const AVPacket *pkt1;
843 st = s->streams[pktl->pkt.stream_index];
844 if (s->internal->raw_packet_buffer_remaining_size <= 0)
845 if ((err = probe_codec(s, st, NULL)) < 0)
847 if (st->request_probe <= 0) {
848 ff_packet_list_get(&s->internal->raw_packet_buffer,
849 &s->internal->raw_packet_buffer_end, pkt);
850 s->internal->raw_packet_buffer_remaining_size += pkt->size;
858 ret = s->iformat->read_packet(s, pkt);
860 av_packet_unref(pkt);
862 /* Some demuxers return FFERROR_REDO when they consume
863 data and discard it (ignored streams, junk, extradata).
864 We must re-call the demuxer to get the real packet. */
865 if (ret == FFERROR_REDO)
867 if (!pktl || ret == AVERROR(EAGAIN))
869 for (i = 0; i < s->nb_streams; i++) {
871 if (st->probe_packets || st->request_probe > 0)
872 if ((err = probe_codec(s, st, NULL)) < 0)
874 av_assert0(st->request_probe <= 0);
879 err = av_packet_make_refcounted(pkt);
881 av_packet_unref(pkt);
885 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
886 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
887 av_log(s, AV_LOG_WARNING,
888 "Dropped corrupted packet (stream = %d)\n",
890 av_packet_unref(pkt);
894 av_assert0(pkt->stream_index < (unsigned)s->nb_streams &&
895 "Invalid stream index.\n");
897 st = s->streams[pkt->stream_index];
899 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
900 // correct first time stamps to negative values
901 if (!is_relative(st->first_dts))
902 st->first_dts = wrap_timestamp(st, st->first_dts);
903 if (!is_relative(st->start_time))
904 st->start_time = wrap_timestamp(st, st->start_time);
905 if (!is_relative(st->cur_dts))
906 st->cur_dts = wrap_timestamp(st, st->cur_dts);
909 pkt->dts = wrap_timestamp(st, pkt->dts);
910 pkt->pts = wrap_timestamp(st, pkt->pts);
912 force_codec_ids(s, st);
914 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
915 if (s->use_wallclock_as_timestamps)
916 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
918 if (!pktl && st->request_probe <= 0)
921 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
922 &s->internal->raw_packet_buffer_end,
925 av_packet_unref(pkt);
928 pkt1 = &s->internal->raw_packet_buffer_end->pkt;
929 s->internal->raw_packet_buffer_remaining_size -= pkt1->size;
931 if ((err = probe_codec(s, st, pkt1)) < 0)
937 /**********************************************************/
939 static int determinable_frame_size(AVCodecContext *avctx)
941 switch(avctx->codec_id) {
942 case AV_CODEC_ID_MP1:
943 case AV_CODEC_ID_MP2:
944 case AV_CODEC_ID_MP3:
945 case AV_CODEC_ID_CODEC2:
953 * Return the frame duration in seconds. Return 0 if not available.
955 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
956 AVCodecParserContext *pc, AVPacket *pkt)
958 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
959 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
960 int frame_size, sample_rate;
962 #if FF_API_LAVF_AVCTX
963 FF_DISABLE_DEPRECATION_WARNINGS
964 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
965 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
966 FF_ENABLE_DEPRECATION_WARNINGS
971 switch (st->codecpar->codec_type) {
972 case AVMEDIA_TYPE_VIDEO:
973 if (st->r_frame_rate.num && !pc && s->iformat) {
974 *pnum = st->r_frame_rate.den;
975 *pden = st->r_frame_rate.num;
976 } else if (st->time_base.num * 1000LL > st->time_base.den) {
977 *pnum = st->time_base.num;
978 *pden = st->time_base.den;
979 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
980 av_assert0(st->internal->avctx->ticks_per_frame);
981 av_reduce(pnum, pden,
983 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
986 if (pc && pc->repeat_pict) {
987 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
988 av_reduce(pnum, pden,
989 (*pnum) * (1LL + pc->repeat_pict),
993 /* If this codec can be interlaced or progressive then we need
994 * a parser to compute duration of a packet. Thus if we have
995 * no parser in such case leave duration undefined. */
996 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
1000 case AVMEDIA_TYPE_AUDIO:
1001 if (st->internal->avctx_inited) {
1002 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
1003 sample_rate = st->internal->avctx->sample_rate;
1005 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
1006 sample_rate = st->codecpar->sample_rate;
1008 if (frame_size <= 0 || sample_rate <= 0)
1011 *pden = sample_rate;
1018 static int is_intra_only(enum AVCodecID id)
1020 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1023 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1028 static int has_decode_delay_been_guessed(AVStream *st)
1030 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1031 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1033 #if CONFIG_H264_DECODER
1034 if (st->internal->avctx->has_b_frames &&
1035 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1038 if (st->internal->avctx->has_b_frames<3)
1039 return st->nb_decoded_frames >= 7;
1040 else if (st->internal->avctx->has_b_frames<4)
1041 return st->nb_decoded_frames >= 18;
1043 return st->nb_decoded_frames >= 20;
1046 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1050 if (pktl == s->internal->packet_buffer_end)
1051 return s->internal->parse_queue;
1055 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1056 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1057 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1060 int delay = st->internal->avctx->has_b_frames;
1063 if (dts == AV_NOPTS_VALUE) {
1064 int64_t best_score = INT64_MAX;
1065 for (i = 0; i<delay; i++) {
1066 if (st->pts_reorder_error_count[i]) {
1067 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1068 if (score < best_score) {
1070 dts = pts_buffer[i];
1075 for (i = 0; i<delay; i++) {
1076 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1077 int64_t diff = FFABS(pts_buffer[i] - dts)
1078 + (uint64_t)st->pts_reorder_error[i];
1079 diff = FFMAX(diff, st->pts_reorder_error[i]);
1080 st->pts_reorder_error[i] = diff;
1081 st->pts_reorder_error_count[i]++;
1082 if (st->pts_reorder_error_count[i] > 250) {
1083 st->pts_reorder_error[i] >>= 1;
1084 st->pts_reorder_error_count[i] >>= 1;
1091 if (dts == AV_NOPTS_VALUE)
1092 dts = pts_buffer[0];
1098 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1099 * of the packets in a window.
1101 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1102 AVPacketList *pkt_buffer)
1104 AVStream *st = s->streams[stream_index];
1105 int delay = st->internal->avctx->has_b_frames;
1108 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1110 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1111 pts_buffer[i] = AV_NOPTS_VALUE;
1113 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1114 if (pkt_buffer->pkt.stream_index != stream_index)
1117 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1118 pts_buffer[0] = pkt_buffer->pkt.pts;
1119 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1120 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1122 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1127 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1128 int64_t dts, int64_t pts, AVPacket *pkt)
1130 AVStream *st = s->streams[stream_index];
1131 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1132 AVPacketList *pktl_it;
1136 if (st->first_dts != AV_NOPTS_VALUE ||
1137 dts == AV_NOPTS_VALUE ||
1138 st->cur_dts == AV_NOPTS_VALUE ||
1139 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1143 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1145 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1147 if (is_relative(pts))
1150 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1151 if (pktl_it->pkt.stream_index != stream_index)
1153 if (is_relative(pktl_it->pkt.pts))
1154 pktl_it->pkt.pts += shift;
1156 if (is_relative(pktl_it->pkt.dts))
1157 pktl_it->pkt.dts += shift;
1159 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1160 st->start_time = pktl_it->pkt.pts;
1161 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1162 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1166 if (has_decode_delay_been_guessed(st)) {
1167 update_dts_from_pts(s, stream_index, pktl);
1170 if (st->start_time == AV_NOPTS_VALUE) {
1171 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1172 st->start_time = pts;
1174 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1175 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1179 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1180 int stream_index, int duration)
1182 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1183 int64_t cur_dts = RELATIVE_TS_BASE;
1185 if (st->first_dts != AV_NOPTS_VALUE) {
1186 if (st->update_initial_durations_done)
1188 st->update_initial_durations_done = 1;
1189 cur_dts = st->first_dts;
1190 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1191 if (pktl->pkt.stream_index == stream_index) {
1192 if (pktl->pkt.pts != pktl->pkt.dts ||
1193 pktl->pkt.dts != AV_NOPTS_VALUE ||
1196 cur_dts -= duration;
1199 if (pktl && pktl->pkt.dts != st->first_dts) {
1200 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1201 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1205 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1208 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1209 st->first_dts = cur_dts;
1210 } else if (st->cur_dts != RELATIVE_TS_BASE)
1213 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1214 if (pktl->pkt.stream_index != stream_index)
1216 if ((pktl->pkt.pts == pktl->pkt.dts ||
1217 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1218 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1219 pktl->pkt.dts == st->first_dts ||
1220 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1221 !pktl->pkt.duration) {
1222 pktl->pkt.dts = cur_dts;
1223 if (!st->internal->avctx->has_b_frames)
1224 pktl->pkt.pts = cur_dts;
1225 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1226 pktl->pkt.duration = duration;
1229 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1232 st->cur_dts = cur_dts;
1235 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1236 AVCodecParserContext *pc, AVPacket *pkt,
1237 int64_t next_dts, int64_t next_pts)
1239 int num, den, presentation_delayed, delay, i;
1241 AVRational duration;
1242 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1243 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1245 if (s->flags & AVFMT_FLAG_NOFILLIN)
1248 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1249 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1250 if (st->last_dts_for_order_check <= pkt->dts) {
1253 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1254 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1256 st->last_dts_for_order_check);
1257 st->dts_misordered++;
1259 if (st->dts_ordered + st->dts_misordered > 250) {
1260 st->dts_ordered >>= 1;
1261 st->dts_misordered >>= 1;
1265 st->last_dts_for_order_check = pkt->dts;
1266 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1267 pkt->dts = AV_NOPTS_VALUE;
1270 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1271 pkt->dts = AV_NOPTS_VALUE;
1273 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1274 && !st->internal->avctx->has_b_frames)
1275 //FIXME Set low_delay = 0 when has_b_frames = 1
1276 st->internal->avctx->has_b_frames = 1;
1278 /* do we have a video B-frame ? */
1279 delay = st->internal->avctx->has_b_frames;
1280 presentation_delayed = 0;
1282 /* XXX: need has_b_frame, but cannot get it if the codec is
1283 * not initialized */
1285 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1286 presentation_delayed = 1;
1288 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1289 st->pts_wrap_bits < 63 &&
1290 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1291 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1292 pkt->dts -= 1LL << st->pts_wrap_bits;
1294 pkt->pts += 1LL << st->pts_wrap_bits;
1297 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1298 * We take the conservative approach and discard both.
1299 * Note: If this is misbehaving for an H.264 file, then possibly
1300 * presentation_delayed is not set correctly. */
1301 if (delay == 1 && pkt->dts == pkt->pts &&
1302 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1303 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1304 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1305 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1306 pkt->dts = AV_NOPTS_VALUE;
1309 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1310 if (pkt->duration <= 0) {
1311 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1313 duration = (AVRational) {num, den};
1314 pkt->duration = av_rescale_rnd(1,
1315 num * (int64_t) st->time_base.den,
1316 den * (int64_t) st->time_base.num,
1321 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1322 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1324 /* Correct timestamps with byte offset if demuxers only have timestamps
1325 * on packet boundaries */
1326 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1327 /* this will estimate bitrate based on this frame's duration and size */
1328 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1329 if (pkt->pts != AV_NOPTS_VALUE)
1331 if (pkt->dts != AV_NOPTS_VALUE)
1335 /* This may be redundant, but it should not hurt. */
1336 if (pkt->dts != AV_NOPTS_VALUE &&
1337 pkt->pts != AV_NOPTS_VALUE &&
1338 pkt->pts > pkt->dts)
1339 presentation_delayed = 1;
1341 if (s->debug & FF_FDEBUG_TS)
1342 av_log(s, AV_LOG_DEBUG,
1343 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1344 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1345 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1347 /* Interpolate PTS and DTS if they are not present. We skip H264
1348 * currently because delay and has_b_frames are not reliably set. */
1349 if ((delay == 0 || (delay == 1 && pc)) &&
1351 if (presentation_delayed) {
1352 /* DTS = decompression timestamp */
1353 /* PTS = presentation timestamp */
1354 if (pkt->dts == AV_NOPTS_VALUE)
1355 pkt->dts = st->last_IP_pts;
1356 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1357 if (pkt->dts == AV_NOPTS_VALUE)
1358 pkt->dts = st->cur_dts;
1360 /* This is tricky: the dts must be incremented by the duration
1361 * of the frame we are displaying, i.e. the last I- or P-frame. */
1362 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1363 st->last_IP_duration = pkt->duration;
1364 if (pkt->dts != AV_NOPTS_VALUE)
1365 st->cur_dts = pkt->dts + st->last_IP_duration;
1366 if (pkt->dts != AV_NOPTS_VALUE &&
1367 pkt->pts == AV_NOPTS_VALUE &&
1368 st->last_IP_duration > 0 &&
1369 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1370 next_dts != next_pts &&
1371 next_pts != AV_NOPTS_VALUE)
1372 pkt->pts = next_dts;
1374 if ((uint64_t)pkt->duration <= INT32_MAX)
1375 st->last_IP_duration = pkt->duration;
1376 st->last_IP_pts = pkt->pts;
1377 /* Cannot compute PTS if not present (we can compute it only
1378 * by knowing the future. */
1379 } else if (pkt->pts != AV_NOPTS_VALUE ||
1380 pkt->dts != AV_NOPTS_VALUE ||
1381 pkt->duration > 0 ) {
1383 /* presentation is not delayed : PTS and DTS are the same */
1384 if (pkt->pts == AV_NOPTS_VALUE)
1385 pkt->pts = pkt->dts;
1386 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1388 if (pkt->pts == AV_NOPTS_VALUE)
1389 pkt->pts = st->cur_dts;
1390 pkt->dts = pkt->pts;
1391 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1392 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1396 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1397 st->pts_buffer[0] = pkt->pts;
1398 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1399 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1401 if(has_decode_delay_been_guessed(st))
1402 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1404 // We skipped it above so we try here.
1406 // This should happen on the first packet
1407 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1408 if (pkt->dts > st->cur_dts)
1409 st->cur_dts = pkt->dts;
1411 if (s->debug & FF_FDEBUG_TS)
1412 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1413 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1416 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1417 pkt->flags |= AV_PKT_FLAG_KEY;
1418 #if FF_API_CONVERGENCE_DURATION
1419 FF_DISABLE_DEPRECATION_WARNINGS
1421 pkt->convergence_duration = pc->convergence_duration;
1422 FF_ENABLE_DEPRECATION_WARNINGS
1426 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1428 AVPacketList *tmp = *pkt_buf;
1431 AVPacketList *pktl = tmp;
1433 av_packet_unref(&pktl->pkt);
1437 *pkt_buf_end = NULL;
1441 * Parse a packet, add all split parts to parse_queue.
1443 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1445 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1447 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1448 AVStream *st = s->streams[stream_index];
1449 uint8_t *data = pkt ? pkt->data : NULL;
1450 int size = pkt ? pkt->size : 0;
1451 int ret = 0, got_output = 0;
1454 av_init_packet(&flush_pkt);
1457 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1458 // preserve 0-size sync packets
1459 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1462 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1464 int64_t next_pts = pkt->pts;
1465 int64_t next_dts = pkt->dts;
1467 av_init_packet(&out_pkt);
1468 len = av_parser_parse2(st->parser, st->internal->avctx,
1469 &out_pkt.data, &out_pkt.size, data, size,
1470 pkt->pts, pkt->dts, pkt->pos);
1472 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1474 /* increment read pointer */
1478 got_output = !!out_pkt.size;
1483 if (pkt->buf && out_pkt.data == pkt->data) {
1484 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1485 * to data in it and not in the parser's internal buffer. */
1486 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1487 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1488 out_pkt.buf = av_buffer_ref(pkt->buf);
1490 ret = AVERROR(ENOMEM);
1494 ret = av_packet_make_refcounted(&out_pkt);
1499 if (pkt->side_data) {
1500 out_pkt.side_data = pkt->side_data;
1501 out_pkt.side_data_elems = pkt->side_data_elems;
1502 pkt->side_data = NULL;
1503 pkt->side_data_elems = 0;
1506 /* set the duration */
1507 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1508 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1509 if (st->internal->avctx->sample_rate > 0) {
1511 av_rescale_q_rnd(st->parser->duration,
1512 (AVRational) { 1, st->internal->avctx->sample_rate },
1518 out_pkt.stream_index = st->index;
1519 out_pkt.pts = st->parser->pts;
1520 out_pkt.dts = st->parser->dts;
1521 out_pkt.pos = st->parser->pos;
1522 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1524 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1525 out_pkt.pos = st->parser->frame_offset;
1527 if (st->parser->key_frame == 1 ||
1528 (st->parser->key_frame == -1 &&
1529 st->parser->pict_type == AV_PICTURE_TYPE_I))
1530 out_pkt.flags |= AV_PKT_FLAG_KEY;
1532 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1533 out_pkt.flags |= AV_PKT_FLAG_KEY;
1535 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1537 ret = ff_packet_list_put(&s->internal->parse_queue,
1538 &s->internal->parse_queue_end,
1541 av_packet_unref(&out_pkt);
1546 /* end of the stream => close and free the parser */
1547 if (pkt == &flush_pkt) {
1548 av_parser_close(st->parser);
1553 av_packet_unref(pkt);
1557 int ff_packet_list_get(AVPacketList **pkt_buffer,
1558 AVPacketList **pkt_buffer_end,
1562 av_assert0(*pkt_buffer);
1565 *pkt_buffer = pktl->next;
1567 *pkt_buffer_end = NULL;
1572 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1574 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1577 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1579 int ret = 0, i, got_packet = 0;
1580 AVDictionary *metadata = NULL;
1582 av_init_packet(pkt);
1584 while (!got_packet && !s->internal->parse_queue) {
1588 /* read next packet */
1589 ret = ff_read_packet(s, &cur_pkt);
1591 if (ret == AVERROR(EAGAIN))
1593 /* flush the parsers */
1594 for (i = 0; i < s->nb_streams; i++) {
1596 if (st->parser && st->need_parsing)
1597 parse_packet(s, NULL, st->index);
1599 /* all remaining packets are now in parse_queue =>
1600 * really terminate parsing */
1604 st = s->streams[cur_pkt.stream_index];
1606 /* update context if required */
1607 if (st->internal->need_context_update) {
1608 if (avcodec_is_open(st->internal->avctx)) {
1609 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1610 avcodec_close(st->internal->avctx);
1611 st->info->found_decoder = 0;
1614 /* close parser, because it depends on the codec */
1615 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1616 av_parser_close(st->parser);
1620 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1622 av_packet_unref(&cur_pkt);
1626 #if FF_API_LAVF_AVCTX
1627 FF_DISABLE_DEPRECATION_WARNINGS
1628 /* update deprecated public codec context */
1629 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1631 av_packet_unref(&cur_pkt);
1634 FF_ENABLE_DEPRECATION_WARNINGS
1637 st->internal->need_context_update = 0;
1640 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1641 cur_pkt.dts != AV_NOPTS_VALUE &&
1642 cur_pkt.pts < cur_pkt.dts) {
1643 av_log(s, AV_LOG_WARNING,
1644 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1645 cur_pkt.stream_index,
1646 av_ts2str(cur_pkt.pts),
1647 av_ts2str(cur_pkt.dts),
1650 if (s->debug & FF_FDEBUG_TS)
1651 av_log(s, AV_LOG_DEBUG,
1652 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1653 cur_pkt.stream_index,
1654 av_ts2str(cur_pkt.pts),
1655 av_ts2str(cur_pkt.dts),
1656 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1658 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1659 st->parser = av_parser_init(st->codecpar->codec_id);
1661 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1662 "%s, packets or times may be invalid.\n",
1663 avcodec_get_name(st->codecpar->codec_id));
1664 /* no parser available: just output the raw packets */
1665 st->need_parsing = AVSTREAM_PARSE_NONE;
1666 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1667 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1668 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1669 st->parser->flags |= PARSER_FLAG_ONCE;
1670 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1671 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1674 if (!st->need_parsing || !st->parser) {
1675 /* no parsing needed: we just output the packet as is */
1677 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1678 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1679 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1680 ff_reduce_index(s, st->index);
1681 av_add_index_entry(st, pkt->pos, pkt->dts,
1682 0, 0, AVINDEX_KEYFRAME);
1685 } else if (st->discard < AVDISCARD_ALL) {
1686 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1688 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1689 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1690 st->codecpar->channels = st->internal->avctx->channels;
1691 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1692 st->codecpar->codec_id = st->internal->avctx->codec_id;
1695 av_packet_unref(&cur_pkt);
1697 if (pkt->flags & AV_PKT_FLAG_KEY)
1698 st->skip_to_keyframe = 0;
1699 if (st->skip_to_keyframe) {
1700 av_packet_unref(&cur_pkt);
1708 if (!got_packet && s->internal->parse_queue)
1709 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1712 AVStream *st = s->streams[pkt->stream_index];
1713 int discard_padding = 0;
1714 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1715 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1716 int64_t sample = ts_to_samples(st, pts);
1717 int duration = ts_to_samples(st, pkt->duration);
1718 int64_t end_sample = sample + duration;
1719 if (duration > 0 && end_sample >= st->first_discard_sample &&
1720 sample < st->last_discard_sample)
1721 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1723 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1724 st->skip_samples = st->start_skip_samples;
1725 if (st->skip_samples || discard_padding) {
1726 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1728 AV_WL32(p, st->skip_samples);
1729 AV_WL32(p + 4, discard_padding);
1730 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1732 st->skip_samples = 0;
1735 if (st->inject_global_side_data) {
1736 for (i = 0; i < st->nb_side_data; i++) {
1737 AVPacketSideData *src_sd = &st->side_data[i];
1740 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1743 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1745 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1749 memcpy(dst_data, src_sd->data, src_sd->size);
1751 st->inject_global_side_data = 0;
1755 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1757 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1758 av_dict_copy(&s->metadata, metadata, 0);
1759 av_dict_free(&metadata);
1760 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1763 #if FF_API_LAVF_AVCTX
1764 update_stream_avctx(s);
1767 if (s->debug & FF_FDEBUG_TS)
1768 av_log(s, AV_LOG_DEBUG,
1769 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1770 "size=%d, duration=%"PRId64", flags=%d\n",
1772 av_ts2str(pkt->pts),
1773 av_ts2str(pkt->dts),
1774 pkt->size, pkt->duration, pkt->flags);
1776 /* A demuxer might have returned EOF because of an IO error, let's
1777 * propagate this back to the user. */
1778 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1784 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1786 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1792 ret = s->internal->packet_buffer
1793 ? ff_packet_list_get(&s->internal->packet_buffer,
1794 &s->internal->packet_buffer_end, pkt)
1795 : read_frame_internal(s, pkt);
1802 AVPacketList *pktl = s->internal->packet_buffer;
1805 AVPacket *next_pkt = &pktl->pkt;
1807 if (next_pkt->dts != AV_NOPTS_VALUE) {
1808 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1809 // last dts seen for this stream. if any of packets following
1810 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1811 int64_t last_dts = next_pkt->dts;
1812 av_assert2(wrap_bits <= 64);
1813 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1814 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1815 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1816 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1818 next_pkt->pts = pktl->pkt.dts;
1820 if (last_dts != AV_NOPTS_VALUE) {
1821 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1822 last_dts = pktl->pkt.dts;
1827 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1828 // Fixing the last reference frame had none pts issue (For MXF etc).
1829 // We only do this when
1831 // 2. we are not able to resolve a pts value for current packet.
1832 // 3. the packets for this stream at the end of the files had valid dts.
1833 next_pkt->pts = last_dts + next_pkt->duration;
1835 pktl = s->internal->packet_buffer;
1838 /* read packet from packet buffer, if there is data */
1839 st = s->streams[next_pkt->stream_index];
1840 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1841 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1842 ret = ff_packet_list_get(&s->internal->packet_buffer,
1843 &s->internal->packet_buffer_end, pkt);
1848 ret = read_frame_internal(s, pkt);
1850 if (pktl && ret != AVERROR(EAGAIN)) {
1857 ret = ff_packet_list_put(&s->internal->packet_buffer,
1858 &s->internal->packet_buffer_end,
1859 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1860 av_packet_unref(pkt);
1867 st = s->streams[pkt->stream_index];
1868 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1869 ff_reduce_index(s, st->index);
1870 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1873 if (is_relative(pkt->dts))
1874 pkt->dts -= RELATIVE_TS_BASE;
1875 if (is_relative(pkt->pts))
1876 pkt->pts -= RELATIVE_TS_BASE;
1881 /* XXX: suppress the packet queue */
1882 static void flush_packet_queue(AVFormatContext *s)
1886 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1887 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1888 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1890 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1893 /*******************************************************/
1896 int av_find_default_stream_index(AVFormatContext *s)
1900 int best_stream = 0;
1901 int best_score = INT_MIN;
1903 if (s->nb_streams <= 0)
1905 for (i = 0; i < s->nb_streams; i++) {
1908 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1909 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1911 if (st->codecpar->width && st->codecpar->height)
1915 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1916 if (st->codecpar->sample_rate)
1919 if (st->codec_info_nb_frames)
1922 if (st->discard != AVDISCARD_ALL)
1925 if (score > best_score) {
1933 /** Flush the frame reader. */
1934 void ff_read_frame_flush(AVFormatContext *s)
1939 flush_packet_queue(s);
1941 /* Reset read state for each stream. */
1942 for (i = 0; i < s->nb_streams; i++) {
1946 av_parser_close(st->parser);
1949 st->last_IP_pts = AV_NOPTS_VALUE;
1950 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1951 if (st->first_dts == AV_NOPTS_VALUE)
1952 st->cur_dts = RELATIVE_TS_BASE;
1954 /* We set the current DTS to an unspecified origin. */
1955 st->cur_dts = AV_NOPTS_VALUE;
1957 st->probe_packets = MAX_PROBE_PACKETS;
1959 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1960 st->pts_buffer[j] = AV_NOPTS_VALUE;
1962 if (s->internal->inject_global_side_data)
1963 st->inject_global_side_data = 1;
1965 st->skip_samples = 0;
1969 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1973 for (i = 0; i < s->nb_streams; i++) {
1974 AVStream *st = s->streams[i];
1977 av_rescale(timestamp,
1978 st->time_base.den * (int64_t) ref_st->time_base.num,
1979 st->time_base.num * (int64_t) ref_st->time_base.den);
1983 void ff_reduce_index(AVFormatContext *s, int stream_index)
1985 AVStream *st = s->streams[stream_index];
1986 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1988 if ((unsigned) st->nb_index_entries >= max_entries) {
1990 for (i = 0; 2 * i < st->nb_index_entries; i++)
1991 st->index_entries[i] = st->index_entries[2 * i];
1992 st->nb_index_entries = i;
1996 int ff_add_index_entry(AVIndexEntry **index_entries,
1997 int *nb_index_entries,
1998 unsigned int *index_entries_allocated_size,
1999 int64_t pos, int64_t timestamp,
2000 int size, int distance, int flags)
2002 AVIndexEntry *entries, *ie;
2005 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
2008 if (timestamp == AV_NOPTS_VALUE)
2009 return AVERROR(EINVAL);
2011 if (size < 0 || size > 0x3FFFFFFF)
2012 return AVERROR(EINVAL);
2014 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2015 timestamp -= RELATIVE_TS_BASE;
2017 entries = av_fast_realloc(*index_entries,
2018 index_entries_allocated_size,
2019 (*nb_index_entries + 1) *
2020 sizeof(AVIndexEntry));
2024 *index_entries = entries;
2026 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2027 timestamp, AVSEEK_FLAG_ANY);
2030 index = (*nb_index_entries)++;
2031 ie = &entries[index];
2032 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2034 ie = &entries[index];
2035 if (ie->timestamp != timestamp) {
2036 if (ie->timestamp <= timestamp)
2038 memmove(entries + index + 1, entries + index,
2039 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2040 (*nb_index_entries)++;
2041 } else if (ie->pos == pos && distance < ie->min_distance)
2042 // do not reduce the distance
2043 distance = ie->min_distance;
2047 ie->timestamp = timestamp;
2048 ie->min_distance = distance;
2055 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2056 int size, int distance, int flags)
2058 timestamp = wrap_timestamp(st, timestamp);
2059 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2060 &st->index_entries_allocated_size, pos,
2061 timestamp, size, distance, flags);
2064 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2065 int64_t wanted_timestamp, int flags)
2073 // Optimize appending index entries at the end.
2074 if (b && entries[b - 1].timestamp < wanted_timestamp)
2080 // Search for the next non-discarded packet.
2081 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2083 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2089 timestamp = entries[m].timestamp;
2090 if (timestamp >= wanted_timestamp)
2092 if (timestamp <= wanted_timestamp)
2095 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2097 if (!(flags & AVSEEK_FLAG_ANY))
2098 while (m >= 0 && m < nb_entries &&
2099 !(entries[m].flags & AVINDEX_KEYFRAME))
2100 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2102 if (m == nb_entries)
2107 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2110 int64_t pos_delta = 0;
2112 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2113 const char *proto = avio_find_protocol_name(s->url);
2116 av_log(s, AV_LOG_INFO,
2117 "Protocol name not provided, cannot determine if input is local or "
2118 "a network protocol, buffers and access patterns cannot be configured "
2119 "optimally without knowing the protocol\n");
2122 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2125 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2126 AVStream *st1 = s->streams[ist1];
2127 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2128 AVStream *st2 = s->streams[ist2];
2134 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2135 AVIndexEntry *e1 = &st1->index_entries[i1];
2136 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2138 skip = FFMAX(skip, e1->size);
2139 for (; i2 < st2->nb_index_entries; i2++) {
2140 AVIndexEntry *e2 = &st2->index_entries[i2];
2141 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2142 if (e2_pts - e1_pts < time_tolerance)
2144 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2152 /* XXX This could be adjusted depending on protocol*/
2153 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2154 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2156 /* realloc the buffer and the original data will be retained */
2157 if (ffio_realloc_buf(s->pb, pos_delta)) {
2158 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2162 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2165 if (skip < (1<<23)) {
2166 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2170 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2172 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2173 wanted_timestamp, flags);
2176 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2177 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2179 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2180 if (stream_index >= 0)
2181 ts = wrap_timestamp(s->streams[stream_index], ts);
2185 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2186 int64_t target_ts, int flags)
2188 const AVInputFormat *avif = s->iformat;
2189 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2190 int64_t ts_min, ts_max, ts;
2195 if (stream_index < 0)
2198 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2201 ts_min = AV_NOPTS_VALUE;
2202 pos_limit = -1; // GCC falsely says it may be uninitialized.
2204 st = s->streams[stream_index];
2205 if (st->index_entries) {
2208 /* FIXME: Whole function must be checked for non-keyframe entries in
2209 * index case, especially read_timestamp(). */
2210 index = av_index_search_timestamp(st, target_ts,
2211 flags | AVSEEK_FLAG_BACKWARD);
2212 index = FFMAX(index, 0);
2213 e = &st->index_entries[index];
2215 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2217 ts_min = e->timestamp;
2218 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2219 pos_min, av_ts2str(ts_min));
2221 av_assert1(index == 0);
2224 index = av_index_search_timestamp(st, target_ts,
2225 flags & ~AVSEEK_FLAG_BACKWARD);
2226 av_assert0(index < st->nb_index_entries);
2228 e = &st->index_entries[index];
2229 av_assert1(e->timestamp >= target_ts);
2231 ts_max = e->timestamp;
2232 pos_limit = pos_max - e->min_distance;
2233 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2234 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2238 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2239 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2244 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2247 ff_read_frame_flush(s);
2248 ff_update_cur_dts(s, st, ts);
2253 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2254 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2256 int64_t step = 1024;
2257 int64_t limit, ts_max;
2258 int64_t filesize = avio_size(s->pb);
2259 int64_t pos_max = filesize - 1;
2262 pos_max = FFMAX(0, (pos_max) - step);
2263 ts_max = ff_read_timestamp(s, stream_index,
2264 &pos_max, limit, read_timestamp);
2266 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2267 if (ts_max == AV_NOPTS_VALUE)
2271 int64_t tmp_pos = pos_max + 1;
2272 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2273 &tmp_pos, INT64_MAX, read_timestamp);
2274 if (tmp_ts == AV_NOPTS_VALUE)
2276 av_assert0(tmp_pos > pos_max);
2279 if (tmp_pos >= filesize)
2291 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2292 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2293 int64_t ts_min, int64_t ts_max,
2294 int flags, int64_t *ts_ret,
2295 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2296 int64_t *, int64_t))
2303 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2305 if (ts_min == AV_NOPTS_VALUE) {
2306 pos_min = s->internal->data_offset;
2307 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2308 if (ts_min == AV_NOPTS_VALUE)
2312 if (ts_min >= target_ts) {
2317 if (ts_max == AV_NOPTS_VALUE) {
2318 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2320 pos_limit = pos_max;
2323 if (ts_max <= target_ts) {
2328 av_assert0(ts_min < ts_max);
2331 while (pos_min < pos_limit) {
2332 av_log(s, AV_LOG_TRACE,
2333 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2334 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2335 av_assert0(pos_limit <= pos_max);
2337 if (no_change == 0) {
2338 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2339 // interpolate position (better than dichotomy)
2340 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2342 pos_min - approximate_keyframe_distance;
2343 } else if (no_change == 1) {
2344 // bisection if interpolation did not change min / max pos last time
2345 pos = (pos_min + pos_limit) >> 1;
2347 /* linear search if bisection failed, can only happen if there
2348 * are very few or no keyframes between min/max */
2353 else if (pos > pos_limit)
2357 // May pass pos_limit instead of -1.
2358 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2363 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2364 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2365 pos_min, pos, pos_max,
2366 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2367 pos_limit, start_pos, no_change);
2368 if (ts == AV_NOPTS_VALUE) {
2369 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2372 if (target_ts <= ts) {
2373 pos_limit = start_pos - 1;
2377 if (target_ts >= ts) {
2383 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2384 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2387 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2389 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2390 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2391 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2397 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2398 int64_t pos, int flags)
2400 int64_t pos_min, pos_max;
2402 pos_min = s->internal->data_offset;
2403 pos_max = avio_size(s->pb) - 1;
2407 else if (pos > pos_max)
2410 avio_seek(s->pb, pos, SEEK_SET);
2412 s->io_repositioned = 1;
2417 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2418 int64_t timestamp, int flags)
2425 st = s->streams[stream_index];
2427 index = av_index_search_timestamp(st, timestamp, flags);
2429 if (index < 0 && st->nb_index_entries &&
2430 timestamp < st->index_entries[0].timestamp)
2433 if (index < 0 || index == st->nb_index_entries - 1) {
2437 if (st->nb_index_entries) {
2438 av_assert0(st->index_entries);
2439 ie = &st->index_entries[st->nb_index_entries - 1];
2440 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2442 ff_update_cur_dts(s, st, ie->timestamp);
2444 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2450 read_status = av_read_frame(s, &pkt);
2451 } while (read_status == AVERROR(EAGAIN));
2452 if (read_status < 0)
2454 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2455 if (pkt.flags & AV_PKT_FLAG_KEY) {
2456 av_packet_unref(&pkt);
2459 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2460 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);
2461 av_packet_unref(&pkt);
2465 av_packet_unref(&pkt);
2467 index = av_index_search_timestamp(st, timestamp, flags);
2472 ff_read_frame_flush(s);
2473 if (s->iformat->read_seek)
2474 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2476 ie = &st->index_entries[index];
2477 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2479 ff_update_cur_dts(s, st, ie->timestamp);
2484 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2485 int64_t timestamp, int flags)
2490 if (flags & AVSEEK_FLAG_BYTE) {
2491 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2493 ff_read_frame_flush(s);
2494 return seek_frame_byte(s, stream_index, timestamp, flags);
2497 if (stream_index < 0) {
2498 stream_index = av_find_default_stream_index(s);
2499 if (stream_index < 0)
2502 st = s->streams[stream_index];
2503 /* timestamp for default must be expressed in AV_TIME_BASE units */
2504 timestamp = av_rescale(timestamp, st->time_base.den,
2505 AV_TIME_BASE * (int64_t) st->time_base.num);
2508 /* first, we try the format specific seek */
2509 if (s->iformat->read_seek) {
2510 ff_read_frame_flush(s);
2511 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2517 if (s->iformat->read_timestamp &&
2518 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2519 ff_read_frame_flush(s);
2520 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2521 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2522 ff_read_frame_flush(s);
2523 return seek_frame_generic(s, stream_index, timestamp, flags);
2528 int av_seek_frame(AVFormatContext *s, int stream_index,
2529 int64_t timestamp, int flags)
2533 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2534 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2535 if ((flags & AVSEEK_FLAG_BACKWARD))
2539 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2540 flags & ~AVSEEK_FLAG_BACKWARD);
2543 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2546 ret = avformat_queue_attached_pictures(s);
2551 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2552 int64_t ts, int64_t max_ts, int flags)
2554 if (min_ts > ts || max_ts < ts)
2556 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2557 return AVERROR(EINVAL);
2560 flags |= AVSEEK_FLAG_ANY;
2561 flags &= ~AVSEEK_FLAG_BACKWARD;
2563 if (s->iformat->read_seek2) {
2565 ff_read_frame_flush(s);
2567 if (stream_index == -1 && s->nb_streams == 1) {
2568 AVRational time_base = s->streams[0]->time_base;
2569 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2570 min_ts = av_rescale_rnd(min_ts, time_base.den,
2571 time_base.num * (int64_t)AV_TIME_BASE,
2572 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2573 max_ts = av_rescale_rnd(max_ts, time_base.den,
2574 time_base.num * (int64_t)AV_TIME_BASE,
2575 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2579 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2583 ret = avformat_queue_attached_pictures(s);
2587 if (s->iformat->read_timestamp) {
2588 // try to seek via read_timestamp()
2591 // Fall back on old API if new is not implemented but old is.
2592 // Note the old API has somewhat different semantics.
2593 if (s->iformat->read_seek || 1) {
2594 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2595 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2596 if (ret<0 && ts != min_ts && max_ts != ts) {
2597 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2599 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2604 // try some generic seek like seek_frame_generic() but with new ts semantics
2605 return -1; //unreachable
2608 int avformat_flush(AVFormatContext *s)
2610 ff_read_frame_flush(s);
2614 /*******************************************************/
2617 * Return TRUE if the stream has accurate duration in any stream.
2619 * @return TRUE if the stream has accurate duration for at least one component.
2621 static int has_duration(AVFormatContext *ic)
2626 for (i = 0; i < ic->nb_streams; i++) {
2627 st = ic->streams[i];
2628 if (st->duration != AV_NOPTS_VALUE)
2631 if (ic->duration != AV_NOPTS_VALUE)
2637 * Estimate the stream timings from the one of each components.
2639 * Also computes the global bitrate if possible.
2641 static void update_stream_timings(AVFormatContext *ic)
2643 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2644 int64_t duration, duration1, duration_text, filesize;
2648 start_time = INT64_MAX;
2649 start_time_text = INT64_MAX;
2650 end_time = INT64_MIN;
2651 end_time_text = INT64_MIN;
2652 duration = INT64_MIN;
2653 duration_text = INT64_MIN;
2655 for (i = 0; i < ic->nb_streams; i++) {
2656 AVStream *st = ic->streams[i];
2657 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2658 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2659 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2660 start_time1 = av_rescale_q(st->start_time, st->time_base,
2663 start_time_text = FFMIN(start_time_text, start_time1);
2665 start_time = FFMIN(start_time, start_time1);
2666 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2668 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2669 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2670 end_time1 += start_time1;
2672 end_time_text = FFMAX(end_time_text, end_time1);
2674 end_time = FFMAX(end_time, end_time1);
2676 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2677 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2678 p->start_time = start_time1;
2679 if (p->end_time < end_time1)
2680 p->end_time = end_time1;
2683 if (st->duration != AV_NOPTS_VALUE) {
2684 duration1 = av_rescale_q(st->duration, st->time_base,
2687 duration_text = FFMAX(duration_text, duration1);
2689 duration = FFMAX(duration, duration1);
2692 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2693 start_time = start_time_text;
2694 else if (start_time > start_time_text)
2695 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2697 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2698 end_time = end_time_text;
2699 else if (end_time < end_time_text)
2700 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2702 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2703 duration = duration_text;
2704 else if (duration < duration_text)
2705 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2707 if (start_time != INT64_MAX) {
2708 ic->start_time = start_time;
2709 if (end_time != INT64_MIN) {
2710 if (ic->nb_programs > 1) {
2711 for (i = 0; i < ic->nb_programs; i++) {
2712 p = ic->programs[i];
2713 if (p->start_time != AV_NOPTS_VALUE &&
2714 p->end_time > p->start_time &&
2715 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2716 duration = FFMAX(duration, p->end_time - p->start_time);
2718 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2719 duration = FFMAX(duration, end_time - start_time);
2723 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2724 ic->duration = duration;
2726 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2727 /* compute the bitrate */
2728 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2729 (double) ic->duration;
2730 if (bitrate >= 0 && bitrate <= INT64_MAX)
2731 ic->bit_rate = bitrate;
2735 static void fill_all_stream_timings(AVFormatContext *ic)
2740 update_stream_timings(ic);
2741 for (i = 0; i < ic->nb_streams; i++) {
2742 st = ic->streams[i];
2743 if (st->start_time == AV_NOPTS_VALUE) {
2744 if (ic->start_time != AV_NOPTS_VALUE)
2745 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2747 if (ic->duration != AV_NOPTS_VALUE)
2748 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2754 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2756 int64_t filesize, duration;
2757 int i, show_warning = 0;
2760 /* if bit_rate is already set, we believe it */
2761 if (ic->bit_rate <= 0) {
2762 int64_t bit_rate = 0;
2763 for (i = 0; i < ic->nb_streams; i++) {
2764 st = ic->streams[i];
2765 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2766 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2767 if (st->codecpar->bit_rate > 0) {
2768 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2772 bit_rate += st->codecpar->bit_rate;
2773 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2774 // If we have a videostream with packets but without a bitrate
2775 // then consider the sum not known
2780 ic->bit_rate = bit_rate;
2783 /* if duration is already set, we believe it */
2784 if (ic->duration == AV_NOPTS_VALUE &&
2785 ic->bit_rate != 0) {
2786 filesize = ic->pb ? avio_size(ic->pb) : 0;
2787 if (filesize > ic->internal->data_offset) {
2788 filesize -= ic->internal->data_offset;
2789 for (i = 0; i < ic->nb_streams; i++) {
2790 st = ic->streams[i];
2791 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2792 && st->duration == AV_NOPTS_VALUE) {
2793 duration = av_rescale(8 * filesize, st->time_base.den,
2795 (int64_t) st->time_base.num);
2796 st->duration = duration;
2803 av_log(ic, AV_LOG_WARNING,
2804 "Estimating duration from bitrate, this may be inaccurate\n");
2807 #define DURATION_MAX_READ_SIZE 250000LL
2808 #define DURATION_MAX_RETRY 6
2810 /* only usable for MPEG-PS streams */
2811 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2813 AVPacket pkt1, *pkt = &pkt1;
2815 int num, den, read_size, i, ret;
2816 int found_duration = 0;
2818 int64_t filesize, offset, duration;
2821 /* flush packet queue */
2822 flush_packet_queue(ic);
2824 for (i = 0; i < ic->nb_streams; i++) {
2825 st = ic->streams[i];
2826 if (st->start_time == AV_NOPTS_VALUE &&
2827 st->first_dts == AV_NOPTS_VALUE &&
2828 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2829 av_log(ic, AV_LOG_WARNING,
2830 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2833 av_parser_close(st->parser);
2838 if (ic->skip_estimate_duration_from_pts) {
2839 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2840 goto skip_duration_calc;
2843 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2844 /* estimate the end time (duration) */
2845 /* XXX: may need to support wrapping */
2846 filesize = ic->pb ? avio_size(ic->pb) : 0;
2848 is_end = found_duration;
2849 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2853 avio_seek(ic->pb, offset, SEEK_SET);
2856 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2860 ret = ff_read_packet(ic, pkt);
2861 } while (ret == AVERROR(EAGAIN));
2864 read_size += pkt->size;
2865 st = ic->streams[pkt->stream_index];
2866 if (pkt->pts != AV_NOPTS_VALUE &&
2867 (st->start_time != AV_NOPTS_VALUE ||
2868 st->first_dts != AV_NOPTS_VALUE)) {
2869 if (pkt->duration == 0) {
2870 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2872 pkt->duration = av_rescale_rnd(1,
2873 num * (int64_t) st->time_base.den,
2874 den * (int64_t) st->time_base.num,
2878 duration = pkt->pts + pkt->duration;
2880 if (st->start_time != AV_NOPTS_VALUE)
2881 duration -= st->start_time;
2883 duration -= st->first_dts;
2885 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2886 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2887 st->duration = duration;
2888 st->info->last_duration = duration;
2891 av_packet_unref(pkt);
2894 /* check if all audio/video streams have valid duration */
2897 for (i = 0; i < ic->nb_streams; i++) {
2898 st = ic->streams[i];
2899 switch (st->codecpar->codec_type) {
2900 case AVMEDIA_TYPE_VIDEO:
2901 case AVMEDIA_TYPE_AUDIO:
2902 if (st->duration == AV_NOPTS_VALUE)
2909 ++retry <= DURATION_MAX_RETRY);
2911 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2913 /* warn about audio/video streams which duration could not be estimated */
2914 for (i = 0; i < ic->nb_streams; i++) {
2915 st = ic->streams[i];
2916 if (st->duration == AV_NOPTS_VALUE) {
2917 switch (st->codecpar->codec_type) {
2918 case AVMEDIA_TYPE_VIDEO:
2919 case AVMEDIA_TYPE_AUDIO:
2920 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2921 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2923 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2928 fill_all_stream_timings(ic);
2930 avio_seek(ic->pb, old_offset, SEEK_SET);
2931 for (i = 0; i < ic->nb_streams; i++) {
2934 st = ic->streams[i];
2935 st->cur_dts = st->first_dts;
2936 st->last_IP_pts = AV_NOPTS_VALUE;
2937 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2938 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2939 st->pts_buffer[j] = AV_NOPTS_VALUE;
2943 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2947 /* get the file size, if possible */
2948 if (ic->iformat->flags & AVFMT_NOFILE) {
2951 file_size = avio_size(ic->pb);
2952 file_size = FFMAX(0, file_size);
2955 if ((!strcmp(ic->iformat->name, "mpeg") ||
2956 !strcmp(ic->iformat->name, "mpegts")) &&
2957 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2958 /* get accurate estimate from the PTSes */
2959 estimate_timings_from_pts(ic, old_offset);
2960 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2961 } else if (has_duration(ic)) {
2962 /* at least one component has timings - we use them for all
2964 fill_all_stream_timings(ic);
2965 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2967 /* less precise: use bitrate info */
2968 estimate_timings_from_bit_rate(ic);
2969 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2971 update_stream_timings(ic);
2975 AVStream av_unused *st;
2976 for (i = 0; i < ic->nb_streams; i++) {
2977 st = ic->streams[i];
2978 if (st->time_base.den)
2979 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2980 (double) st->start_time * av_q2d(st->time_base),
2981 (double) st->duration * av_q2d(st->time_base));
2983 av_log(ic, AV_LOG_TRACE,
2984 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2985 (double) ic->start_time / AV_TIME_BASE,
2986 (double) ic->duration / AV_TIME_BASE,
2987 (int64_t)ic->bit_rate / 1000);
2991 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2993 AVCodecContext *avctx = st->internal->avctx;
2995 #define FAIL(errmsg) do { \
2997 *errmsg_ptr = errmsg; \
3001 if ( avctx->codec_id == AV_CODEC_ID_NONE
3002 && avctx->codec_type != AVMEDIA_TYPE_DATA)
3003 FAIL("unknown codec");
3004 switch (avctx->codec_type) {
3005 case AVMEDIA_TYPE_AUDIO:
3006 if (!avctx->frame_size && determinable_frame_size(avctx))
3007 FAIL("unspecified frame size");
3008 if (st->info->found_decoder >= 0 &&
3009 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
3010 FAIL("unspecified sample format");
3011 if (!avctx->sample_rate)
3012 FAIL("unspecified sample rate");
3013 if (!avctx->channels)
3014 FAIL("unspecified number of channels");
3015 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3016 FAIL("no decodable DTS frames");
3018 case AVMEDIA_TYPE_VIDEO:
3020 FAIL("unspecified size");
3021 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3022 FAIL("unspecified pixel format");
3023 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3024 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3025 FAIL("no frame in rv30/40 and no sar");
3027 case AVMEDIA_TYPE_SUBTITLE:
3028 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3029 FAIL("unspecified size");
3031 case AVMEDIA_TYPE_DATA:
3032 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3038 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3039 static int try_decode_frame(AVFormatContext *s, AVStream *st,
3040 const AVPacket *avpkt, AVDictionary **options)
3042 AVCodecContext *avctx = st->internal->avctx;
3043 const AVCodec *codec;
3044 int got_picture = 1, ret = 0;
3045 AVFrame *frame = av_frame_alloc();
3046 AVSubtitle subtitle;
3047 AVPacket pkt = *avpkt;
3048 int do_skip_frame = 0;
3049 enum AVDiscard skip_frame;
3052 return AVERROR(ENOMEM);
3054 if (!avcodec_is_open(avctx) &&
3055 st->info->found_decoder <= 0 &&
3056 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3057 AVDictionary *thread_opt = NULL;
3059 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3062 st->info->found_decoder = -st->codecpar->codec_id;
3067 /* Force thread count to 1 since the H.264 decoder will not extract
3068 * SPS and PPS to extradata during multi-threaded decoding. */
3069 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3070 if (s->codec_whitelist)
3071 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3072 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3074 av_dict_free(&thread_opt);
3076 st->info->found_decoder = -avctx->codec_id;
3079 st->info->found_decoder = 1;
3080 } else if (!st->info->found_decoder)
3081 st->info->found_decoder = 1;
3083 if (st->info->found_decoder < 0) {
3088 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3090 skip_frame = avctx->skip_frame;
3091 avctx->skip_frame = AVDISCARD_ALL;
3094 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3096 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3097 (!st->codec_info_nb_frames &&
3098 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3100 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3101 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3102 ret = avcodec_send_packet(avctx, &pkt);
3103 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3107 ret = avcodec_receive_frame(avctx, frame);
3110 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3112 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3113 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3114 &got_picture, &pkt);
3120 st->nb_decoded_frames++;
3125 if (!pkt.data && !got_picture)
3129 if (do_skip_frame) {
3130 avctx->skip_frame = skip_frame;
3133 av_frame_free(&frame);
3137 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3139 while (tags->id != AV_CODEC_ID_NONE) {
3147 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3150 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3151 if (tag == tags[i].tag)
3153 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3154 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3156 return AV_CODEC_ID_NONE;
3159 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3161 if (bps <= 0 || bps > 64)
3162 return AV_CODEC_ID_NONE;
3167 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3169 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3171 return AV_CODEC_ID_NONE;
3176 if (sflags & (1 << (bps - 1))) {
3179 return AV_CODEC_ID_PCM_S8;
3181 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3183 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3185 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3187 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3189 return AV_CODEC_ID_NONE;
3194 return AV_CODEC_ID_PCM_U8;
3196 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3198 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3200 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3202 return AV_CODEC_ID_NONE;
3208 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3211 if (!av_codec_get_tag2(tags, id, &tag))
3216 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3220 for (i = 0; tags && tags[i]; i++) {
3221 const AVCodecTag *codec_tags = tags[i];
3222 while (codec_tags->id != AV_CODEC_ID_NONE) {
3223 if (codec_tags->id == id) {
3224 *tag = codec_tags->tag;
3233 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3236 for (i = 0; tags && tags[i]; i++) {
3237 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3238 if (id != AV_CODEC_ID_NONE)
3241 return AV_CODEC_ID_NONE;
3244 static void compute_chapters_end(AVFormatContext *s)
3247 int64_t max_time = 0;
3249 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3250 max_time = s->duration +
3251 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3253 for (i = 0; i < s->nb_chapters; i++)
3254 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3255 AVChapter *ch = s->chapters[i];
3256 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3260 for (j = 0; j < s->nb_chapters; j++) {
3261 AVChapter *ch1 = s->chapters[j];
3262 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3264 if (j != i && next_start > ch->start && next_start < end)
3267 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3271 static int get_std_framerate(int i)
3274 return (i + 1) * 1001;
3278 return (i + 31) * 1001 * 12;
3282 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3286 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3289 /* Is the time base unreliable?
3290 * This is a heuristic to balance between quick acceptance of the values in
3291 * the headers vs. some extra checks.
3292 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3293 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3294 * And there are "variable" fps files this needs to detect as well. */
3295 static int tb_unreliable(AVCodecContext *c)
3297 if (c->time_base.den >= 101LL * c->time_base.num ||
3298 c->time_base.den < 5LL * c->time_base.num ||
3299 // c->codec_tag == AV_RL32("DIVX") ||
3300 // c->codec_tag == AV_RL32("XVID") ||
3301 c->codec_tag == AV_RL32("mp4v") ||
3302 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3303 c->codec_id == AV_CODEC_ID_GIF ||
3304 c->codec_id == AV_CODEC_ID_HEVC ||
3305 c->codec_id == AV_CODEC_ID_H264)
3310 int ff_alloc_extradata(AVCodecParameters *par, int size)
3312 av_freep(&par->extradata);
3313 par->extradata_size = 0;
3315 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3316 return AVERROR(EINVAL);
3318 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3319 if (!par->extradata)
3320 return AVERROR(ENOMEM);
3322 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3323 par->extradata_size = size;
3328 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3330 int ret = ff_alloc_extradata(par, size);
3333 ret = avio_read(pb, par->extradata, size);
3335 av_freep(&par->extradata);
3336 par->extradata_size = 0;
3337 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3338 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3344 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3347 int64_t last = st->info->last_dts;
3349 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3350 && ts - (uint64_t)last < INT64_MAX) {
3351 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3352 int64_t duration = ts - last;
3354 if (!st->info->duration_error)
3355 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3356 if (!st->info->duration_error)
3357 return AVERROR(ENOMEM);
3359 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3360 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3361 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3362 if (st->info->duration_error[0][1][i] < 1e10) {
3363 int framerate = get_std_framerate(i);
3364 double sdts = dts*framerate/(1001*12);
3365 for (j= 0; j<2; j++) {
3366 int64_t ticks = llrint(sdts+j*0.5);
3367 double error= sdts - ticks + j*0.5;
3368 st->info->duration_error[j][0][i] += error;
3369 st->info->duration_error[j][1][i] += error*error;
3373 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3374 st->info->duration_count++;
3375 st->info->rfps_duration_sum += duration;
3378 if (st->info->duration_count % 10 == 0) {
3379 int n = st->info->duration_count;
3380 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3381 if (st->info->duration_error[0][1][i] < 1e10) {
3382 double a0 = st->info->duration_error[0][0][i] / n;
3383 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3384 double a1 = st->info->duration_error[1][0][i] / n;
3385 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3386 if (error0 > 0.04 && error1 > 0.04) {
3387 st->info->duration_error[0][1][i] = 2e10;
3388 st->info->duration_error[1][1][i] = 2e10;
3394 // ignore the first 4 values, they might have some random jitter
3395 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3396 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3398 if (ts != AV_NOPTS_VALUE)
3399 st->info->last_dts = ts;
3404 void ff_rfps_calculate(AVFormatContext *ic)
3408 for (i = 0; i < ic->nb_streams; i++) {
3409 AVStream *st = ic->streams[i];
3411 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3413 // the check for tb_unreliable() is not completely correct, since this is not about handling
3414 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3415 // ipmovie.c produces.
3416 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)
3417 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);
3418 if (st->info->duration_count>1 && !st->r_frame_rate.num
3419 && tb_unreliable(st->internal->avctx)) {
3421 double best_error= 0.01;
3422 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3424 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3427 if (st->info->codec_info_duration &&
3428 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3430 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3433 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3436 for (k= 0; k<2; k++) {
3437 int n = st->info->duration_count;
3438 double a= st->info->duration_error[k][0][j] / n;
3439 double error= st->info->duration_error[k][1][j]/n - a*a;
3441 if (error < best_error && best_error> 0.000000001) {
3443 num = get_std_framerate(j);
3446 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3449 // do not increase frame rate by more than 1 % in order to match a standard rate.
3450 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3451 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3453 if ( !st->avg_frame_rate.num
3454 && st->r_frame_rate.num && st->info->rfps_duration_sum
3455 && st->info->codec_info_duration <= 0
3456 && st->info->duration_count > 2
3457 && 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
3459 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3460 st->avg_frame_rate = st->r_frame_rate;
3463 av_freep(&st->info->duration_error);
3464 st->info->last_dts = AV_NOPTS_VALUE;
3465 st->info->duration_count = 0;
3466 st->info->rfps_duration_sum = 0;
3470 static int extract_extradata_check(AVStream *st)
3472 const AVBitStreamFilter *f;
3474 f = av_bsf_get_by_name("extract_extradata");
3479 const enum AVCodecID *ids;
3480 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3481 if (*ids == st->codecpar->codec_id)
3488 static int extract_extradata_init(AVStream *st)
3490 AVStreamInternal *sti = st->internal;
3491 const AVBitStreamFilter *f;
3494 f = av_bsf_get_by_name("extract_extradata");
3498 /* check that the codec id is supported */
3499 ret = extract_extradata_check(st);
3503 sti->extract_extradata.pkt = av_packet_alloc();
3504 if (!sti->extract_extradata.pkt)
3505 return AVERROR(ENOMEM);
3507 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3511 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3516 sti->extract_extradata.bsf->time_base_in = st->time_base;
3518 ret = av_bsf_init(sti->extract_extradata.bsf);
3523 sti->extract_extradata.inited = 1;
3527 av_bsf_free(&sti->extract_extradata.bsf);
3528 av_packet_free(&sti->extract_extradata.pkt);
3532 static int extract_extradata(AVStream *st, const AVPacket *pkt)
3534 AVStreamInternal *sti = st->internal;
3538 if (!sti->extract_extradata.inited) {
3539 ret = extract_extradata_init(st);
3544 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3547 pkt_ref = sti->extract_extradata.pkt;
3548 ret = av_packet_ref(pkt_ref, pkt);
3552 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3554 av_packet_unref(pkt_ref);
3558 while (ret >= 0 && !sti->avctx->extradata) {
3562 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3564 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3569 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3573 av_assert0(!sti->avctx->extradata);
3574 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3575 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3576 if (!sti->avctx->extradata) {
3577 av_packet_unref(pkt_ref);
3578 return AVERROR(ENOMEM);
3580 memcpy(sti->avctx->extradata, extradata, extradata_size);
3581 sti->avctx->extradata_size = extradata_size;
3583 av_packet_unref(pkt_ref);
3589 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3591 int i, count = 0, ret = 0, j;
3594 AVCodecContext *avctx;
3596 int64_t old_offset = avio_tell(ic->pb);
3597 // new streams might appear, no options for those
3598 int orig_nb_streams = ic->nb_streams;
3600 int64_t max_analyze_duration = ic->max_analyze_duration;
3601 int64_t max_stream_analyze_duration;
3602 int64_t max_subtitle_analyze_duration;
3603 int64_t probesize = ic->probesize;
3604 int eof_reached = 0;
3605 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3607 flush_codecs = probesize > 0;
3609 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3611 max_stream_analyze_duration = max_analyze_duration;
3612 max_subtitle_analyze_duration = max_analyze_duration;
3613 if (!max_analyze_duration) {
3614 max_stream_analyze_duration =
3615 max_analyze_duration = 5*AV_TIME_BASE;
3616 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3617 if (!strcmp(ic->iformat->name, "flv"))
3618 max_stream_analyze_duration = 90*AV_TIME_BASE;
3619 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3620 max_stream_analyze_duration = 7*AV_TIME_BASE;
3624 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3625 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3627 for (i = 0; i < ic->nb_streams; i++) {
3628 const AVCodec *codec;
3629 AVDictionary *thread_opt = NULL;
3630 st = ic->streams[i];
3631 avctx = st->internal->avctx;
3633 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3634 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3635 /* if (!st->time_base.num)
3637 if (!avctx->time_base.num)
3638 avctx->time_base = st->time_base;
3641 /* check if the caller has overridden the codec id */
3642 #if FF_API_LAVF_AVCTX
3643 FF_DISABLE_DEPRECATION_WARNINGS
3644 if (st->codec->codec_id != st->internal->orig_codec_id) {
3645 st->codecpar->codec_id = st->codec->codec_id;
3646 st->codecpar->codec_type = st->codec->codec_type;
3647 st->internal->orig_codec_id = st->codec->codec_id;
3649 FF_ENABLE_DEPRECATION_WARNINGS
3651 // only for the split stuff
3652 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3653 st->parser = av_parser_init(st->codecpar->codec_id);
3655 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3656 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3657 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3658 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3660 } else if (st->need_parsing) {
3661 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3662 "%s, packets or times may be invalid.\n",
3663 avcodec_get_name(st->codecpar->codec_id));
3667 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3668 st->internal->orig_codec_id = st->codecpar->codec_id;
3670 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3672 goto find_stream_info_err;
3673 if (st->request_probe <= 0)
3674 st->internal->avctx_inited = 1;
3676 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3678 /* Force thread count to 1 since the H.264 decoder will not extract
3679 * SPS and PPS to extradata during multi-threaded decoding. */
3680 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3682 if (ic->codec_whitelist)
3683 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3685 /* Ensure that subtitle_header is properly set. */
3686 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3687 && codec && !avctx->codec) {
3688 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3689 av_log(ic, AV_LOG_WARNING,
3690 "Failed to open codec in %s\n",__FUNCTION__);
3693 // Try to just open decoders, in case this is enough to get parameters.
3694 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3695 if (codec && !avctx->codec)
3696 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3697 av_log(ic, AV_LOG_WARNING,
3698 "Failed to open codec in %s\n",__FUNCTION__);
3701 av_dict_free(&thread_opt);
3704 for (i = 0; i < ic->nb_streams; i++) {
3705 #if FF_API_R_FRAME_RATE
3706 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3708 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3709 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3714 const AVPacket *pkt;
3715 int analyzed_all_streams;
3716 if (ff_check_interrupt(&ic->interrupt_callback)) {
3718 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3722 /* check if one codec still needs to be handled */
3723 for (i = 0; i < ic->nb_streams; i++) {
3724 int fps_analyze_framecount = 20;
3727 st = ic->streams[i];
3728 if (!has_codec_parameters(st, NULL))
3730 /* If the timebase is coarse (like the usual millisecond precision
3731 * of mkv), we need to analyze more frames to reliably arrive at
3732 * the correct fps. */
3733 if (av_q2d(st->time_base) > 0.0005)
3734 fps_analyze_framecount *= 2;
3735 if (!tb_unreliable(st->internal->avctx))
3736 fps_analyze_framecount = 0;
3737 if (ic->fps_probe_size >= 0)
3738 fps_analyze_framecount = ic->fps_probe_size;
3739 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3740 fps_analyze_framecount = 0;
3741 /* variable fps and no guess at the real fps */
3742 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3743 st->info->codec_info_duration_fields/2 :
3744 st->info->duration_count;
3745 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3746 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3747 if (count < fps_analyze_framecount)
3750 // Look at the first 3 frames if there is evidence of frame delay
3751 // but the decoder delay is not set.
3752 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3754 if (!st->internal->avctx->extradata &&
3755 (!st->internal->extract_extradata.inited ||
3756 st->internal->extract_extradata.bsf) &&
3757 extract_extradata_check(st))
3759 if (st->first_dts == AV_NOPTS_VALUE &&
3760 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3761 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3762 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3763 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3766 analyzed_all_streams = 0;
3767 if (!missing_streams || !*missing_streams)
3768 if (i == ic->nb_streams) {
3769 analyzed_all_streams = 1;
3770 /* NOTE: If the format has no header, then we need to read some
3771 * packets to get most of the streams, so we cannot stop here. */
3772 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3773 /* If we found the info for all the codecs, we can stop. */
3775 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3780 /* We did not get all the codec info, but we read too much data. */
3781 if (read_size >= probesize) {
3783 av_log(ic, AV_LOG_DEBUG,
3784 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3785 for (i = 0; i < ic->nb_streams; i++)
3786 if (!ic->streams[i]->r_frame_rate.num &&
3787 ic->streams[i]->info->duration_count <= 1 &&
3788 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3789 strcmp(ic->iformat->name, "image2"))
3790 av_log(ic, AV_LOG_WARNING,
3791 "Stream #%d: not enough frames to estimate rate; "
3792 "consider increasing probesize\n", i);
3796 /* NOTE: A new stream can be added there if no header in file
3797 * (AVFMTCTX_NOHEADER). */
3798 ret = read_frame_internal(ic, &pkt1);
3799 if (ret == AVERROR(EAGAIN))
3808 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3809 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3810 &ic->internal->packet_buffer_end,
3813 goto find_stream_info_err;
3815 pkt = &ic->internal->packet_buffer_end->pkt;
3820 st = ic->streams[pkt->stream_index];
3821 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3822 read_size += pkt->size;
3824 avctx = st->internal->avctx;
3825 if (!st->internal->avctx_inited) {
3826 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3828 goto find_stream_info_err;
3829 st->internal->avctx_inited = 1;
3832 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3833 /* check for non-increasing dts */
3834 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3835 st->info->fps_last_dts >= pkt->dts) {
3836 av_log(ic, AV_LOG_DEBUG,
3837 "Non-increasing DTS in stream %d: packet %d with DTS "
3838 "%"PRId64", packet %d with DTS %"PRId64"\n",
3839 st->index, st->info->fps_last_dts_idx,
3840 st->info->fps_last_dts, st->codec_info_nb_frames,
3842 st->info->fps_first_dts =
3843 st->info->fps_last_dts = AV_NOPTS_VALUE;
3845 /* Check for a discontinuity in dts. If the difference in dts
3846 * is more than 1000 times the average packet duration in the
3847 * sequence, we treat it as a discontinuity. */
3848 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3849 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3850 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3851 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3852 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3853 av_log(ic, AV_LOG_WARNING,
3854 "DTS discontinuity in stream %d: packet %d with DTS "
3855 "%"PRId64", packet %d with DTS %"PRId64"\n",
3856 st->index, st->info->fps_last_dts_idx,
3857 st->info->fps_last_dts, st->codec_info_nb_frames,
3859 st->info->fps_first_dts =
3860 st->info->fps_last_dts = AV_NOPTS_VALUE;
3863 /* update stored dts values */
3864 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3865 st->info->fps_first_dts = pkt->dts;
3866 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3868 st->info->fps_last_dts = pkt->dts;
3869 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3871 if (st->codec_info_nb_frames>1) {
3875 if (st->time_base.den > 0)
3876 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3877 if (st->avg_frame_rate.num > 0)
3878 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3881 && st->codec_info_nb_frames>30
3882 && st->info->fps_first_dts != AV_NOPTS_VALUE
3883 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3884 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3886 if (analyzed_all_streams) limit = max_analyze_duration;
3887 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3888 else limit = max_stream_analyze_duration;
3891 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3893 t, pkt->stream_index);
3894 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3895 av_packet_unref(&pkt1);
3898 if (pkt->duration) {
3899 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3900 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3902 st->info->codec_info_duration += pkt->duration;
3903 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3906 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3907 #if FF_API_R_FRAME_RATE
3908 ff_rfps_add_frame(ic, st, pkt->dts);
3910 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3911 st->info->frame_delay_evidence = 1;
3913 if (!st->internal->avctx->extradata) {
3914 ret = extract_extradata(st, pkt);
3916 goto find_stream_info_err;
3919 /* If still no information, we try to open the codec and to
3920 * decompress the frame. We try to avoid that in most cases as
3921 * it takes longer and uses more memory. For MPEG-4, we need to
3922 * decompress for QuickTime.
3924 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3925 * least one frame of codec data, this makes sure the codec initializes
3926 * the channel configuration and does not only trust the values from
3928 try_decode_frame(ic, st, pkt,
3929 (options && i < orig_nb_streams) ? &options[i] : NULL);
3931 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3932 av_packet_unref(&pkt1);
3934 st->codec_info_nb_frames++;
3940 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3941 st = ic->streams[stream_index];
3942 avctx = st->internal->avctx;
3943 if (!has_codec_parameters(st, NULL)) {
3944 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3945 if (codec && !avctx->codec) {
3946 AVDictionary *opts = NULL;
3947 if (ic->codec_whitelist)
3948 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3949 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3950 av_log(ic, AV_LOG_WARNING,
3951 "Failed to open codec in %s\n",__FUNCTION__);
3952 av_dict_free(&opts);
3956 // EOF already reached while reading the stream above.
3957 // So continue with reoordering DTS with whatever delay we have.
3958 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3959 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3965 AVPacket empty_pkt = { 0 };
3967 av_init_packet(&empty_pkt);
3969 for (i = 0; i < ic->nb_streams; i++) {
3971 st = ic->streams[i];
3973 /* flush the decoders */
3974 if (st->info->found_decoder == 1) {
3976 err = try_decode_frame(ic, st, &empty_pkt,
3977 (options && i < orig_nb_streams)
3978 ? &options[i] : NULL);
3979 } while (err > 0 && !has_codec_parameters(st, NULL));
3982 av_log(ic, AV_LOG_INFO,
3983 "decoding for stream %d failed\n", st->index);
3989 ff_rfps_calculate(ic);
3991 for (i = 0; i < ic->nb_streams; i++) {
3992 st = ic->streams[i];
3993 avctx = st->internal->avctx;
3994 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3995 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3996 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3997 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3998 avctx->codec_tag= tag;
4001 /* estimate average framerate if not set by demuxer */
4002 if (st->info->codec_info_duration_fields &&
4003 !st->avg_frame_rate.num &&
4004 st->info->codec_info_duration) {
4006 double best_error = 0.01;
4007 AVRational codec_frame_rate = avctx->framerate;
4009 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4010 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4011 st->info->codec_info_duration < 0)
4013 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4014 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4015 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4017 /* Round guessed framerate to a "standard" framerate if it's
4018 * within 1% of the original estimate. */
4019 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4020 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4021 double error = fabs(av_q2d(st->avg_frame_rate) /
4022 av_q2d(std_fps) - 1);
4024 if (error < best_error) {
4026 best_fps = std_fps.num;
4029 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4030 error = fabs(av_q2d(codec_frame_rate) /
4031 av_q2d(std_fps) - 1);
4032 if (error < best_error) {
4034 best_fps = std_fps.num;
4039 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4040 best_fps, 12 * 1001, INT_MAX);
4043 if (!st->r_frame_rate.num) {
4044 if ( avctx->time_base.den * (int64_t) st->time_base.num
4045 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4046 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4047 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4049 st->r_frame_rate.num = st->time_base.den;
4050 st->r_frame_rate.den = st->time_base.num;
4053 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4054 AVRational hw_ratio = { avctx->height, avctx->width };
4055 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4058 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4059 if (!avctx->bits_per_coded_sample)
4060 avctx->bits_per_coded_sample =
4061 av_get_bits_per_sample(avctx->codec_id);
4062 // set stream disposition based on audio service type
4063 switch (avctx->audio_service_type) {
4064 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4065 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4067 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4068 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4070 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4071 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4073 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4074 st->disposition = AV_DISPOSITION_COMMENT;
4076 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4077 st->disposition = AV_DISPOSITION_KARAOKE;
4084 estimate_timings(ic, old_offset);
4086 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4088 if (ret >= 0 && ic->nb_streams)
4089 /* We could not have all the codec parameters before EOF. */
4091 for (i = 0; i < ic->nb_streams; i++) {
4093 st = ic->streams[i];
4095 /* if no packet was ever seen, update context now for has_codec_parameters */
4096 if (!st->internal->avctx_inited) {
4097 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4098 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4099 st->codecpar->format = st->internal->avctx->sample_fmt;
4100 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4102 goto find_stream_info_err;
4104 if (!has_codec_parameters(st, &errmsg)) {
4106 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4107 av_log(ic, AV_LOG_WARNING,
4108 "Could not find codec parameters for stream %d (%s): %s\n"
4109 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4116 compute_chapters_end(ic);
4118 /* update the stream parameters from the internal codec contexts */
4119 for (i = 0; i < ic->nb_streams; i++) {
4120 st = ic->streams[i];
4122 if (st->internal->avctx_inited) {
4123 int orig_w = st->codecpar->width;
4124 int orig_h = st->codecpar->height;
4125 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4127 goto find_stream_info_err;
4129 // The decoder might reduce the video size by the lowres factor.
4130 if (st->internal->avctx->lowres && orig_w) {
4131 st->codecpar->width = orig_w;
4132 st->codecpar->height = orig_h;
4137 #if FF_API_LAVF_AVCTX
4138 FF_DISABLE_DEPRECATION_WARNINGS
4139 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4141 goto find_stream_info_err;
4144 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4145 // by the lowres factor.
4146 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4147 st->codec->lowres = st->internal->avctx->lowres;
4148 st->codec->width = st->internal->avctx->width;
4149 st->codec->height = st->internal->avctx->height;
4153 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4154 st->codec->time_base = st->internal->avctx->time_base;
4155 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4157 st->codec->framerate = st->avg_frame_rate;
4159 if (st->internal->avctx->subtitle_header) {
4160 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4161 if (!st->codec->subtitle_header)
4162 goto find_stream_info_err;
4163 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4164 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4165 st->codec->subtitle_header_size);
4168 // Fields unavailable in AVCodecParameters
4169 st->codec->coded_width = st->internal->avctx->coded_width;
4170 st->codec->coded_height = st->internal->avctx->coded_height;
4171 st->codec->properties = st->internal->avctx->properties;
4172 FF_ENABLE_DEPRECATION_WARNINGS
4175 st->internal->avctx_inited = 0;
4178 find_stream_info_err:
4179 for (i = 0; i < ic->nb_streams; i++) {
4180 st = ic->streams[i];
4182 av_freep(&st->info->duration_error);
4183 avcodec_close(ic->streams[i]->internal->avctx);
4184 av_freep(&ic->streams[i]->info);
4185 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4186 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4189 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4190 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4194 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4198 for (i = 0; i < ic->nb_programs; i++) {
4199 if (ic->programs[i] == last) {
4203 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4204 if (ic->programs[i]->stream_index[j] == s)
4205 return ic->programs[i];
4211 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4212 int wanted_stream_nb, int related_stream,
4213 AVCodec **decoder_ret, int flags)
4215 int i, nb_streams = ic->nb_streams;
4216 int ret = AVERROR_STREAM_NOT_FOUND;
4217 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4218 int count, multiframe, disposition;
4219 int64_t best_bitrate = -1;
4221 unsigned *program = NULL;
4222 const AVCodec *decoder = NULL, *best_decoder = NULL;
4224 if (related_stream >= 0 && wanted_stream_nb < 0) {
4225 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4227 program = p->stream_index;
4228 nb_streams = p->nb_stream_indexes;
4231 for (i = 0; i < nb_streams; i++) {
4232 int real_stream_index = program ? program[i] : i;
4233 AVStream *st = ic->streams[real_stream_index];
4234 AVCodecParameters *par = st->codecpar;
4235 if (par->codec_type != type)
4237 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4239 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4242 decoder = find_decoder(ic, st, par->codec_id);
4245 ret = AVERROR_DECODER_NOT_FOUND;
4249 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4250 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4251 count = st->codec_info_nb_frames;
4252 bitrate = par->bit_rate;
4253 multiframe = FFMIN(5, count);
4254 if ((best_disposition > disposition) ||
4255 (best_disposition == disposition && best_multiframe > multiframe) ||
4256 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4257 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4259 best_disposition = disposition;
4261 best_bitrate = bitrate;
4262 best_multiframe = multiframe;
4263 ret = real_stream_index;
4264 best_decoder = decoder;
4265 if (program && i == nb_streams - 1 && ret < 0) {
4267 nb_streams = ic->nb_streams;
4268 /* no related stream found, try again with everything */
4273 *decoder_ret = (AVCodec*)best_decoder;
4277 /*******************************************************/
4279 int av_read_play(AVFormatContext *s)
4281 if (s->iformat->read_play)
4282 return s->iformat->read_play(s);
4284 return avio_pause(s->pb, 0);
4285 return AVERROR(ENOSYS);
4288 int av_read_pause(AVFormatContext *s)
4290 if (s->iformat->read_pause)
4291 return s->iformat->read_pause(s);
4293 return avio_pause(s->pb, 1);
4294 return AVERROR(ENOSYS);
4297 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4302 dst->time_base = src->time_base;
4303 dst->nb_frames = src->nb_frames;
4304 dst->disposition = src->disposition;
4305 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4306 dst->avg_frame_rate = src->avg_frame_rate;
4307 dst->r_frame_rate = src->r_frame_rate;
4309 av_dict_free(&dst->metadata);
4310 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4314 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4318 /* Free existing side data*/
4319 for (i = 0; i < dst->nb_side_data; i++)
4320 av_free(dst->side_data[i].data);
4321 av_freep(&dst->side_data);
4322 dst->nb_side_data = 0;
4324 /* Copy side data if present */
4325 if (src->nb_side_data) {
4326 dst->side_data = av_mallocz_array(src->nb_side_data,
4327 sizeof(AVPacketSideData));
4328 if (!dst->side_data)
4329 return AVERROR(ENOMEM);
4330 dst->nb_side_data = src->nb_side_data;
4332 for (i = 0; i < src->nb_side_data; i++) {
4333 uint8_t *data = av_memdup(src->side_data[i].data,
4334 src->side_data[i].size);
4336 return AVERROR(ENOMEM);
4337 dst->side_data[i].type = src->side_data[i].type;
4338 dst->side_data[i].size = src->side_data[i].size;
4339 dst->side_data[i].data = data;
4343 #if FF_API_LAVF_FFSERVER
4344 FF_DISABLE_DEPRECATION_WARNINGS
4345 av_freep(&dst->recommended_encoder_configuration);
4346 if (src->recommended_encoder_configuration) {
4347 const char *conf_str = src->recommended_encoder_configuration;
4348 dst->recommended_encoder_configuration = av_strdup(conf_str);
4349 if (!dst->recommended_encoder_configuration)
4350 return AVERROR(ENOMEM);
4352 FF_ENABLE_DEPRECATION_WARNINGS
4358 static void free_stream(AVStream **pst)
4360 AVStream *st = *pst;
4366 for (i = 0; i < st->nb_side_data; i++)
4367 av_freep(&st->side_data[i].data);
4368 av_freep(&st->side_data);
4371 av_parser_close(st->parser);
4373 if (st->attached_pic.data)
4374 av_packet_unref(&st->attached_pic);
4377 avcodec_free_context(&st->internal->avctx);
4378 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4379 av_bsf_free(&st->internal->bsfcs[i]);
4380 av_freep(&st->internal->bsfcs);
4382 av_freep(&st->internal->priv_pts);
4383 av_bsf_free(&st->internal->extract_extradata.bsf);
4384 av_packet_free(&st->internal->extract_extradata.pkt);
4386 av_freep(&st->internal);
4388 av_dict_free(&st->metadata);
4389 avcodec_parameters_free(&st->codecpar);
4390 av_freep(&st->probe_data.buf);
4391 av_freep(&st->index_entries);
4392 #if FF_API_LAVF_AVCTX
4393 FF_DISABLE_DEPRECATION_WARNINGS
4394 avcodec_free_context(&st->codec);
4395 FF_ENABLE_DEPRECATION_WARNINGS
4397 av_freep(&st->priv_data);
4399 av_freep(&st->info->duration_error);
4400 av_freep(&st->info);
4401 #if FF_API_LAVF_FFSERVER
4402 FF_DISABLE_DEPRECATION_WARNINGS
4403 av_freep(&st->recommended_encoder_configuration);
4404 FF_ENABLE_DEPRECATION_WARNINGS
4410 void ff_free_stream(AVFormatContext *s, AVStream *st)
4412 av_assert0(s->nb_streams>0);
4413 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4415 free_stream(&s->streams[ --s->nb_streams ]);
4418 void avformat_free_context(AVFormatContext *s)
4426 if (s->iformat && s->iformat->priv_class && s->priv_data)
4427 av_opt_free(s->priv_data);
4428 if (s->oformat && s->oformat->priv_class && s->priv_data)
4429 av_opt_free(s->priv_data);
4431 for (i = s->nb_streams - 1; i >= 0; i--)
4432 ff_free_stream(s, s->streams[i]);
4435 for (i = s->nb_programs - 1; i >= 0; i--) {
4436 av_dict_free(&s->programs[i]->metadata);
4437 av_freep(&s->programs[i]->stream_index);
4438 av_freep(&s->programs[i]);
4440 av_freep(&s->programs);
4441 av_freep(&s->priv_data);
4442 while (s->nb_chapters--) {
4443 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4444 av_freep(&s->chapters[s->nb_chapters]);
4446 av_freep(&s->chapters);
4447 av_dict_free(&s->metadata);
4448 av_dict_free(&s->internal->id3v2_meta);
4449 av_freep(&s->streams);
4450 flush_packet_queue(s);
4451 av_freep(&s->internal);
4456 void avformat_close_input(AVFormatContext **ps)
4467 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4468 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4471 flush_packet_queue(s);
4474 if (s->iformat->read_close)
4475 s->iformat->read_close(s);
4477 avformat_free_context(s);
4484 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4490 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4491 if (s->max_streams < INT_MAX/sizeof(*streams))
4492 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);
4495 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4498 s->streams = streams;
4500 st = av_mallocz(sizeof(AVStream));
4503 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4507 st->info->last_dts = AV_NOPTS_VALUE;
4509 #if FF_API_LAVF_AVCTX
4510 FF_DISABLE_DEPRECATION_WARNINGS
4511 st->codec = avcodec_alloc_context3(c);
4517 FF_ENABLE_DEPRECATION_WARNINGS
4520 st->internal = av_mallocz(sizeof(*st->internal));
4524 st->codecpar = avcodec_parameters_alloc();
4528 st->internal->avctx = avcodec_alloc_context3(NULL);
4529 if (!st->internal->avctx)
4533 #if FF_API_LAVF_AVCTX
4534 FF_DISABLE_DEPRECATION_WARNINGS
4535 /* no default bitrate if decoding */
4536 st->codec->bit_rate = 0;
4537 FF_ENABLE_DEPRECATION_WARNINGS
4540 /* default pts setting is MPEG-like */
4541 avpriv_set_pts_info(st, 33, 1, 90000);
4542 /* we set the current DTS to 0 so that formats without any timestamps
4543 * but durations get some timestamps, formats with some unknown
4544 * timestamps have their first few packets buffered and the
4545 * timestamps corrected before they are returned to the user */
4546 st->cur_dts = RELATIVE_TS_BASE;
4548 st->cur_dts = AV_NOPTS_VALUE;
4551 st->index = s->nb_streams;
4552 st->start_time = AV_NOPTS_VALUE;
4553 st->duration = AV_NOPTS_VALUE;
4554 st->first_dts = AV_NOPTS_VALUE;
4555 st->probe_packets = MAX_PROBE_PACKETS;
4556 st->pts_wrap_reference = AV_NOPTS_VALUE;
4557 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4559 st->last_IP_pts = AV_NOPTS_VALUE;
4560 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4561 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4562 st->pts_buffer[i] = AV_NOPTS_VALUE;
4564 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4566 #if FF_API_R_FRAME_RATE
4567 st->info->last_dts = AV_NOPTS_VALUE;
4569 st->info->fps_first_dts = AV_NOPTS_VALUE;
4570 st->info->fps_last_dts = AV_NOPTS_VALUE;
4572 st->inject_global_side_data = s->internal->inject_global_side_data;
4574 st->internal->need_context_update = 1;
4576 s->streams[s->nb_streams++] = st;
4583 AVProgram *av_new_program(AVFormatContext *ac, int id)
4585 AVProgram *program = NULL;
4588 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4590 for (i = 0; i < ac->nb_programs; i++)
4591 if (ac->programs[i]->id == id)
4592 program = ac->programs[i];
4595 program = av_mallocz(sizeof(AVProgram));
4598 dynarray_add(&ac->programs, &ac->nb_programs, program);
4599 program->discard = AVDISCARD_NONE;
4600 program->pmt_version = -1;
4603 program->pts_wrap_reference = AV_NOPTS_VALUE;
4604 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4606 program->start_time =
4607 program->end_time = AV_NOPTS_VALUE;
4612 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4613 int64_t start, int64_t end, const char *title)
4615 AVChapter *chapter = NULL;
4618 if (end != AV_NOPTS_VALUE && start > end) {
4619 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4623 for (i = 0; i < s->nb_chapters; i++)
4624 if (s->chapters[i]->id == id)
4625 chapter = s->chapters[i];
4628 chapter = av_mallocz(sizeof(AVChapter));
4631 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4633 av_dict_set(&chapter->metadata, "title", title, 0);
4635 chapter->time_base = time_base;
4636 chapter->start = start;
4642 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4645 AVProgram *program = NULL;
4648 if (idx >= ac->nb_streams) {
4649 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4653 for (i = 0; i < ac->nb_programs; i++) {
4654 if (ac->programs[i]->id != progid)
4656 program = ac->programs[i];
4657 for (j = 0; j < program->nb_stream_indexes; j++)
4658 if (program->stream_index[j] == idx)
4661 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4664 program->stream_index = tmp;
4665 program->stream_index[program->nb_stream_indexes++] = idx;
4670 uint64_t ff_ntp_time(void)
4672 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4675 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4677 uint64_t ntp_ts, frac_part, sec;
4680 //current ntp time in seconds and micro seconds
4681 sec = ntp_time_us / 1000000;
4682 usec = ntp_time_us % 1000000;
4684 //encoding in ntp timestamp format
4685 frac_part = usec * 0xFFFFFFFFULL;
4686 frac_part /= 1000000;
4688 if (sec > 0xFFFFFFFFULL)
4689 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4692 ntp_ts |= frac_part;
4697 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4700 char *q, buf1[20], c;
4701 int nd, len, percentd_found;
4713 while (av_isdigit(*p))
4714 nd = nd * 10 + *p++ - '0';
4716 } while (av_isdigit(c));
4722 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4727 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4729 if ((q - buf + len) > buf_size - 1)
4731 memcpy(q, buf1, len);
4739 if ((q - buf) < buf_size - 1)
4743 if (!percentd_found)
4752 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4754 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4757 void av_url_split(char *proto, int proto_size,
4758 char *authorization, int authorization_size,
4759 char *hostname, int hostname_size,
4760 int *port_ptr, char *path, int path_size, const char *url)
4762 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4768 if (authorization_size > 0)
4769 authorization[0] = 0;
4770 if (hostname_size > 0)
4775 /* parse protocol */
4776 if ((p = strchr(url, ':'))) {
4777 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4784 /* no protocol means plain filename */
4785 av_strlcpy(path, url, path_size);
4789 /* separate path from hostname */
4790 ls = strchr(p, '/');
4791 ls2 = strchr(p, '?');
4795 ls = FFMIN(ls, ls2);
4797 av_strlcpy(path, ls, path_size);
4799 ls = &p[strlen(p)]; // XXX
4801 /* the rest is hostname, use that to parse auth/port */
4803 /* authorization (user[:pass]@hostname) */
4805 while ((at = strchr(p, '@')) && at < ls) {
4806 av_strlcpy(authorization, at2,
4807 FFMIN(authorization_size, at + 1 - at2));
4808 p = at + 1; /* skip '@' */
4811 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4813 av_strlcpy(hostname, p + 1,
4814 FFMIN(hostname_size, brk - p));
4815 if (brk[1] == ':' && port_ptr)
4816 *port_ptr = atoi(brk + 2);
4817 } else if ((col = strchr(p, ':')) && col < ls) {
4818 av_strlcpy(hostname, p,
4819 FFMIN(col + 1 - p, hostname_size));
4821 *port_ptr = atoi(col + 1);
4823 av_strlcpy(hostname, p,
4824 FFMIN(ls + 1 - p, hostname_size));
4828 int ff_mkdir_p(const char *path)
4831 char *temp = av_strdup(path);
4835 if (!path || !temp) {
4839 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4841 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4845 for ( ; *pos != '\0'; ++pos) {
4846 if (*pos == '/' || *pos == '\\') {
4849 ret = mkdir(temp, 0755);
4854 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4855 ret = mkdir(temp, 0755);
4862 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4865 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4868 'C', 'D', 'E', 'F' };
4869 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4872 'c', 'd', 'e', 'f' };
4873 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4875 for (i = 0; i < s; i++) {
4876 buff[i * 2] = hex_table[src[i] >> 4];
4877 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4883 int ff_hex_to_data(uint8_t *data, const char *p)
4890 p += strspn(p, SPACE_CHARS);
4893 c = av_toupper((unsigned char) *p++);
4894 if (c >= '0' && c <= '9')
4896 else if (c >= 'A' && c <= 'F')
4911 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4912 unsigned int pts_num, unsigned int pts_den)
4915 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4916 if (new_tb.num != pts_num)
4917 av_log(NULL, AV_LOG_DEBUG,
4918 "st:%d removing common factor %d from timebase\n",
4919 s->index, pts_num / new_tb.num);
4921 av_log(NULL, AV_LOG_WARNING,
4922 "st:%d has too large timebase, reducing\n", s->index);
4924 if (new_tb.num <= 0 || new_tb.den <= 0) {
4925 av_log(NULL, AV_LOG_ERROR,
4926 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4927 new_tb.num, new_tb.den,
4931 s->time_base = new_tb;
4932 #if FF_API_LAVF_AVCTX
4933 FF_DISABLE_DEPRECATION_WARNINGS
4934 s->codec->pkt_timebase = new_tb;
4935 FF_ENABLE_DEPRECATION_WARNINGS
4937 s->internal->avctx->pkt_timebase = new_tb;
4938 s->pts_wrap_bits = pts_wrap_bits;
4941 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4944 const char *ptr = str;
4946 /* Parse key=value pairs. */
4949 char *dest = NULL, *dest_end;
4950 int key_len, dest_len = 0;
4952 /* Skip whitespace and potential commas. */
4953 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4960 if (!(ptr = strchr(key, '=')))
4963 key_len = ptr - key;
4965 callback_get_buf(context, key, key_len, &dest, &dest_len);
4966 dest_end = dest + dest_len - 1;
4970 while (*ptr && *ptr != '\"') {
4974 if (dest && dest < dest_end)
4978 if (dest && dest < dest_end)
4986 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4987 if (dest && dest < dest_end)
4995 int ff_find_stream_index(AVFormatContext *s, int id)
4998 for (i = 0; i < s->nb_streams; i++)
4999 if (s->streams[i]->id == id)
5004 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
5008 unsigned int codec_tag;
5009 if (ofmt->query_codec)
5010 return ofmt->query_codec(codec_id, std_compliance);
5011 else if (ofmt->codec_tag)
5012 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
5013 else if (codec_id == ofmt->video_codec ||
5014 codec_id == ofmt->audio_codec ||
5015 codec_id == ofmt->subtitle_codec ||
5016 codec_id == ofmt->data_codec)
5019 return AVERROR_PATCHWELCOME;
5022 int avformat_network_init(void)
5026 if ((ret = ff_network_init()) < 0)
5028 if ((ret = ff_tls_init()) < 0)
5034 int avformat_network_deinit(void)
5043 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5044 uint64_t channel_layout, int32_t sample_rate,
5045 int32_t width, int32_t height)
5051 return AVERROR(EINVAL);
5054 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5056 if (channel_layout) {
5058 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5062 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5064 if (width || height) {
5066 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5068 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5070 return AVERROR(ENOMEM);
5071 bytestream_put_le32(&data, flags);
5073 bytestream_put_le32(&data, channels);
5075 bytestream_put_le64(&data, channel_layout);
5077 bytestream_put_le32(&data, sample_rate);
5078 if (width || height) {
5079 bytestream_put_le32(&data, width);
5080 bytestream_put_le32(&data, height);
5085 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5087 AVRational undef = {0, 1};
5088 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5089 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5090 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5092 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5093 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5094 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5095 stream_sample_aspect_ratio = undef;
5097 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5098 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5099 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5100 frame_sample_aspect_ratio = undef;
5102 if (stream_sample_aspect_ratio.num)
5103 return stream_sample_aspect_ratio;
5105 return frame_sample_aspect_ratio;
5108 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5110 AVRational fr = st->r_frame_rate;
5111 AVRational codec_fr = st->internal->avctx->framerate;
5112 AVRational avg_fr = st->avg_frame_rate;
5114 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5115 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5120 if (st->internal->avctx->ticks_per_frame > 1) {
5121 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5122 (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))
5130 * Matches a stream specifier (but ignores requested index).
5132 * @param indexptr set to point to the requested stream index if there is one
5134 * @return <0 on error
5135 * 0 if st is NOT a matching stream
5136 * >0 if st is a matching stream
5138 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5139 const char *spec, const char **indexptr, AVProgram **p)
5141 int match = 1; /* Stores if the specifier matches so far. */
5143 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5147 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5148 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5149 enum AVMediaType type;
5153 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5154 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5155 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5156 case 'd': type = AVMEDIA_TYPE_DATA; break;
5157 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5158 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5159 default: av_assert0(0);
5161 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5162 return AVERROR(EINVAL);
5164 #if FF_API_LAVF_AVCTX
5165 FF_DISABLE_DEPRECATION_WARNINGS
5166 if (type != st->codecpar->codec_type
5167 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5169 FF_ENABLE_DEPRECATION_WARNINGS
5171 if (type != st->codecpar->codec_type)
5174 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5176 } else if (*spec == 'p' && *(spec + 1) == ':') {
5181 prog_id = strtol(spec, &endptr, 0);
5182 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5183 if (spec == endptr || (*endptr && *endptr++ != ':'))
5184 return AVERROR(EINVAL);
5187 for (i = 0; i < s->nb_programs; i++) {
5188 if (s->programs[i]->id != prog_id)
5191 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5192 if (st->index == s->programs[i]->stream_index[j]) {
5195 *p = s->programs[i];
5204 } else if (*spec == '#' ||
5205 (*spec == 'i' && *(spec + 1) == ':')) {
5208 spec += 1 + (*spec == 'i');
5209 stream_id = strtol(spec, &endptr, 0);
5210 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5211 return AVERROR(EINVAL);
5212 return match && (stream_id == st->id);
5213 } else if (*spec == 'm' && *(spec + 1) == ':') {
5214 AVDictionaryEntry *tag;
5220 val = strchr(spec, ':');
5222 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5224 return AVERROR(ENOMEM);
5226 tag = av_dict_get(st->metadata, key, NULL, 0);
5228 if (!val || !strcmp(tag->value, val + 1))
5237 return match && ret;
5238 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5239 AVCodecParameters *par = st->codecpar;
5240 #if FF_API_LAVF_AVCTX
5241 FF_DISABLE_DEPRECATION_WARNINGS
5242 AVCodecContext *codec = st->codec;
5243 FF_ENABLE_DEPRECATION_WARNINGS
5246 switch (par->codec_type) {
5247 case AVMEDIA_TYPE_AUDIO:
5248 val = par->sample_rate && par->channels;
5249 #if FF_API_LAVF_AVCTX
5250 val = val || (codec->sample_rate && codec->channels);
5252 if (par->format == AV_SAMPLE_FMT_NONE
5253 #if FF_API_LAVF_AVCTX
5254 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5259 case AVMEDIA_TYPE_VIDEO:
5260 val = par->width && par->height;
5261 #if FF_API_LAVF_AVCTX
5262 val = val || (codec->width && codec->height);
5264 if (par->format == AV_PIX_FMT_NONE
5265 #if FF_API_LAVF_AVCTX
5266 && codec->pix_fmt == AV_PIX_FMT_NONE
5271 case AVMEDIA_TYPE_UNKNOWN:
5278 #if FF_API_LAVF_AVCTX
5279 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5281 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5284 return AVERROR(EINVAL);
5292 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5297 const char *indexptr = NULL;
5298 AVProgram *p = NULL;
5301 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5308 index = strtol(indexptr, &endptr, 0);
5309 if (*endptr) { /* We can't have anything after the requested index. */
5310 ret = AVERROR(EINVAL);
5314 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5315 if (spec == indexptr)
5316 return (index == st->index);
5318 /* If we requested a matching stream index, we have to ensure st is that. */
5319 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5320 for (int i = 0; i < nb_streams && index >= 0; i++) {
5321 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5322 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5325 if (ret > 0 && index-- == 0 && st == candidate)
5331 if (ret == AVERROR(EINVAL))
5332 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5336 int ff_generate_avci_extradata(AVStream *st)
5338 static const uint8_t avci100_1080p_extradata[] = {
5340 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5341 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5342 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5343 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5344 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5345 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5346 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5347 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5348 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5350 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5353 static const uint8_t avci100_1080i_extradata[] = {
5355 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5356 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5357 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5358 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5359 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5360 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5361 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5362 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5363 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5364 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5365 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5367 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5370 static const uint8_t avci50_1080p_extradata[] = {
5372 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5373 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5374 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5375 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5376 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5377 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5378 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5379 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5380 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5382 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5385 static const uint8_t avci50_1080i_extradata[] = {
5387 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5388 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5389 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5390 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5391 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5392 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5393 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5394 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5395 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5396 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5397 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5399 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5402 static const uint8_t avci100_720p_extradata[] = {
5404 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5405 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5406 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5407 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5408 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5409 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5410 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5411 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5412 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5413 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5415 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5418 static const uint8_t avci50_720p_extradata[] = {
5420 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5421 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5422 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5423 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5424 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5425 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5426 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5427 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5428 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5430 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5434 const uint8_t *data = NULL;
5437 if (st->codecpar->width == 1920) {
5438 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5439 data = avci100_1080p_extradata;
5440 size = sizeof(avci100_1080p_extradata);
5442 data = avci100_1080i_extradata;
5443 size = sizeof(avci100_1080i_extradata);
5445 } else if (st->codecpar->width == 1440) {
5446 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5447 data = avci50_1080p_extradata;
5448 size = sizeof(avci50_1080p_extradata);
5450 data = avci50_1080i_extradata;
5451 size = sizeof(avci50_1080i_extradata);
5453 } else if (st->codecpar->width == 1280) {
5454 data = avci100_720p_extradata;
5455 size = sizeof(avci100_720p_extradata);
5456 } else if (st->codecpar->width == 960) {
5457 data = avci50_720p_extradata;
5458 size = sizeof(avci50_720p_extradata);
5464 av_freep(&st->codecpar->extradata);
5465 if (ff_alloc_extradata(st->codecpar, size))
5466 return AVERROR(ENOMEM);
5467 memcpy(st->codecpar->extradata, data, size);
5472 uint8_t *av_stream_get_side_data(const AVStream *st,
5473 enum AVPacketSideDataType type, int *size)
5477 for (i = 0; i < st->nb_side_data; i++) {
5478 if (st->side_data[i].type == type) {
5480 *size = st->side_data[i].size;
5481 return st->side_data[i].data;
5487 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5488 uint8_t *data, size_t size)
5490 AVPacketSideData *sd, *tmp;
5493 for (i = 0; i < st->nb_side_data; i++) {
5494 sd = &st->side_data[i];
5496 if (sd->type == type) {
5497 av_freep(&sd->data);
5504 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5505 return AVERROR(ERANGE);
5507 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5509 return AVERROR(ENOMEM);
5512 st->side_data = tmp;
5515 sd = &st->side_data[st->nb_side_data - 1];
5523 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5527 uint8_t *data = av_malloc(size);
5532 ret = av_stream_add_side_data(st, type, data, size);
5541 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5544 const AVBitStreamFilter *bsf;
5546 AVCodecParameters *in_par;
5548 if (!(bsf = av_bsf_get_by_name(name))) {
5549 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5550 return AVERROR_BSF_NOT_FOUND;
5553 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5556 if (st->internal->nb_bsfcs) {
5557 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5558 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5560 in_par = st->codecpar;
5561 bsfc->time_base_in = st->time_base;
5564 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5569 if (args && bsfc->filter->priv_class) {
5570 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5571 const char * shorthand[2] = {NULL};
5574 shorthand[0] = opt->name;
5576 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5582 if ((ret = av_bsf_init(bsfc)) < 0) {
5587 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5592 av_log(NULL, AV_LOG_VERBOSE,
5593 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5594 name, args ? args : "");
5599 FF_DISABLE_DEPRECATION_WARNINGS
5600 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5601 AVBitStreamFilterContext *bsfc)
5605 AVPacket new_pkt = *pkt;
5606 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5607 &new_pkt.data, &new_pkt.size,
5608 pkt->data, pkt->size,
5609 pkt->flags & AV_PKT_FLAG_KEY);
5610 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5611 av_packet_unref(pkt);
5612 memset(pkt, 0, sizeof(*pkt));
5615 if(a == 0 && new_pkt.data != pkt->data) {
5616 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
5618 memcpy(t, new_pkt.data, new_pkt.size);
5619 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5624 a = AVERROR(ENOMEM);
5628 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5629 av_buffer_default_free, NULL, 0);
5631 pkt->side_data = NULL;
5632 pkt->side_data_elems = 0;
5633 av_packet_unref(pkt);
5635 av_freep(&new_pkt.data);
5636 a = AVERROR(ENOMEM);
5640 av_log(codec, AV_LOG_ERROR,
5641 "Failed to open bitstream filter %s for stream %d with codec %s",
5642 bsfc->filter->name, pkt->stream_index,
5643 codec->codec ? codec->codec->name : "copy");
5653 FF_ENABLE_DEPRECATION_WARNINGS
5656 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5659 return AVERROR(EINVAL);
5661 if (!(s->oformat->flags & AVFMT_NOFILE))
5662 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5666 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5669 s->io_close(s, *pb);
5673 int ff_is_http_proto(char *filename) {
5674 const char *proto = avio_find_protocol_name(filename);
5675 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5678 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5680 AVDictionaryEntry *entry;
5681 int64_t parsed_timestamp;
5683 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5684 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5685 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5688 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5695 int ff_standardize_creation_time(AVFormatContext *s)
5698 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5700 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5704 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5709 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5711 if (size != AVPALETTE_SIZE) {
5712 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5713 return AVERROR_INVALIDDATA;
5715 memcpy(palette, side_data, AVPALETTE_SIZE);
5719 if (ret == CONTAINS_PAL) {
5721 for (i = 0; i < AVPALETTE_COUNT; i++)
5722 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5729 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5734 ret = av_bprint_finalize(buf, &str);
5737 if (!av_bprint_is_complete(buf)) {
5739 return AVERROR(ENOMEM);
5742 par->extradata = str;
5743 /* Note: the string is NUL terminated (so extradata can be read as a
5744 * string), but the ending character is not accounted in the size (in
5745 * binary formats you are likely not supposed to mux that character). When
5746 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5748 par->extradata_size = buf->len;
5752 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5753 AVStream *ost, const AVStream *ist,
5754 enum AVTimebaseSource copy_tb)
5756 //TODO: use [io]st->internal->avctx
5757 const AVCodecContext *dec_ctx = ist->codec;
5758 AVCodecContext *enc_ctx = ost->codec;
5760 enc_ctx->time_base = ist->time_base;
5762 * Avi is a special case here because it supports variable fps but
5763 * having the fps and timebase differe significantly adds quite some
5766 if (!strcmp(ofmt->name, "avi")) {
5767 #if FF_API_R_FRAME_RATE
5768 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5769 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5770 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5771 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5772 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5773 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5774 enc_ctx->time_base.num = ist->r_frame_rate.den;
5775 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5776 enc_ctx->ticks_per_frame = 2;
5779 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5780 && av_q2d(ist->time_base) < 1.0/500
5781 || copy_tb == AVFMT_TBCF_DECODER) {
5782 enc_ctx->time_base = dec_ctx->time_base;
5783 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5784 enc_ctx->time_base.den *= 2;
5785 enc_ctx->ticks_per_frame = 2;
5787 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5788 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5789 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5790 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5791 && av_q2d(ist->time_base) < 1.0/500
5792 || copy_tb == AVFMT_TBCF_DECODER) {
5793 enc_ctx->time_base = dec_ctx->time_base;
5794 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5798 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5799 && dec_ctx->time_base.num < dec_ctx->time_base.den
5800 && dec_ctx->time_base.num > 0
5801 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5802 enc_ctx->time_base = dec_ctx->time_base;
5805 if (ost->avg_frame_rate.num)
5806 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5808 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5809 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5814 AVRational av_stream_get_codec_timebase(const AVStream *st)
5816 // See avformat_transfer_internal_stream_timing_info() TODO.
5817 #if FF_API_LAVF_AVCTX
5818 FF_DISABLE_DEPRECATION_WARNINGS
5819 return st->codec->time_base;
5820 FF_ENABLE_DEPRECATION_WARNINGS
5822 return st->internal->avctx->time_base;
5826 void ff_format_set_url(AVFormatContext *s, char *url)
5831 #if FF_API_FORMAT_FILENAME
5832 FF_DISABLE_DEPRECATION_WARNINGS
5833 av_strlcpy(s->filename, url, sizeof(s->filename));
5834 FF_ENABLE_DEPRECATION_WARNINGS