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)
843 AVPacketList *pktl = s->internal->raw_packet_buffer;
844 const AVPacket *pkt1;
847 st = s->streams[pktl->pkt.stream_index];
848 if (s->internal->raw_packet_buffer_remaining_size <= 0)
849 if ((err = probe_codec(s, st, NULL)) < 0)
851 if (st->request_probe <= 0) {
852 ff_packet_list_get(&s->internal->raw_packet_buffer,
853 &s->internal->raw_packet_buffer_end, pkt);
854 s->internal->raw_packet_buffer_remaining_size += pkt->size;
859 ret = s->iformat->read_packet(s, pkt);
861 av_packet_unref(pkt);
863 /* Some demuxers return FFERROR_REDO when they consume
864 data and discard it (ignored streams, junk, extradata).
865 We must re-call the demuxer to get the real packet. */
866 if (ret == FFERROR_REDO)
868 if (!pktl || ret == AVERROR(EAGAIN))
870 for (i = 0; i < s->nb_streams; i++) {
872 if (st->probe_packets || st->request_probe > 0)
873 if ((err = probe_codec(s, st, NULL)) < 0)
875 av_assert0(st->request_probe <= 0);
880 err = av_packet_make_refcounted(pkt);
882 av_packet_unref(pkt);
886 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
887 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
888 av_log(s, AV_LOG_WARNING,
889 "Dropped corrupted packet (stream = %d)\n",
891 av_packet_unref(pkt);
895 av_assert0(pkt->stream_index < (unsigned)s->nb_streams &&
896 "Invalid stream index.\n");
898 st = s->streams[pkt->stream_index];
900 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
901 // correct first time stamps to negative values
902 if (!is_relative(st->first_dts))
903 st->first_dts = wrap_timestamp(st, st->first_dts);
904 if (!is_relative(st->start_time))
905 st->start_time = wrap_timestamp(st, st->start_time);
906 if (!is_relative(st->cur_dts))
907 st->cur_dts = wrap_timestamp(st, st->cur_dts);
910 pkt->dts = wrap_timestamp(st, pkt->dts);
911 pkt->pts = wrap_timestamp(st, pkt->pts);
913 force_codec_ids(s, st);
915 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
916 if (s->use_wallclock_as_timestamps)
917 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
919 if (!pktl && st->request_probe <= 0)
922 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
923 &s->internal->raw_packet_buffer_end,
926 av_packet_unref(pkt);
929 pkt1 = &s->internal->raw_packet_buffer_end->pkt;
930 s->internal->raw_packet_buffer_remaining_size -= pkt1->size;
932 if ((err = probe_codec(s, st, pkt1)) < 0)
938 /**********************************************************/
940 static int determinable_frame_size(AVCodecContext *avctx)
942 switch(avctx->codec_id) {
943 case AV_CODEC_ID_MP1:
944 case AV_CODEC_ID_MP2:
945 case AV_CODEC_ID_MP3:
946 case AV_CODEC_ID_CODEC2:
954 * Return the frame duration in seconds. Return 0 if not available.
956 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
957 AVCodecParserContext *pc, AVPacket *pkt)
959 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
960 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
961 int frame_size, sample_rate;
963 #if FF_API_LAVF_AVCTX
964 FF_DISABLE_DEPRECATION_WARNINGS
965 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
966 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
967 FF_ENABLE_DEPRECATION_WARNINGS
972 switch (st->codecpar->codec_type) {
973 case AVMEDIA_TYPE_VIDEO:
974 if (st->r_frame_rate.num && !pc && s->iformat) {
975 *pnum = st->r_frame_rate.den;
976 *pden = st->r_frame_rate.num;
977 } else if (st->time_base.num * 1000LL > st->time_base.den) {
978 *pnum = st->time_base.num;
979 *pden = st->time_base.den;
980 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
981 av_assert0(st->internal->avctx->ticks_per_frame);
982 av_reduce(pnum, pden,
984 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
987 if (pc && pc->repeat_pict) {
988 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
989 av_reduce(pnum, pden,
990 (*pnum) * (1LL + pc->repeat_pict),
994 /* If this codec can be interlaced or progressive then we need
995 * a parser to compute duration of a packet. Thus if we have
996 * no parser in such case leave duration undefined. */
997 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
1001 case AVMEDIA_TYPE_AUDIO:
1002 if (st->internal->avctx_inited) {
1003 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
1004 sample_rate = st->internal->avctx->sample_rate;
1006 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
1007 sample_rate = st->codecpar->sample_rate;
1009 if (frame_size <= 0 || sample_rate <= 0)
1012 *pden = sample_rate;
1019 static int is_intra_only(enum AVCodecID id)
1021 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1024 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1029 static int has_decode_delay_been_guessed(AVStream *st)
1031 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1032 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1034 #if CONFIG_H264_DECODER
1035 if (st->internal->avctx->has_b_frames &&
1036 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1039 if (st->internal->avctx->has_b_frames<3)
1040 return st->nb_decoded_frames >= 7;
1041 else if (st->internal->avctx->has_b_frames<4)
1042 return st->nb_decoded_frames >= 18;
1044 return st->nb_decoded_frames >= 20;
1047 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1051 if (pktl == s->internal->packet_buffer_end)
1052 return s->internal->parse_queue;
1056 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1057 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1058 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1061 int delay = st->internal->avctx->has_b_frames;
1064 if (dts == AV_NOPTS_VALUE) {
1065 int64_t best_score = INT64_MAX;
1066 for (i = 0; i<delay; i++) {
1067 if (st->pts_reorder_error_count[i]) {
1068 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1069 if (score < best_score) {
1071 dts = pts_buffer[i];
1076 for (i = 0; i<delay; i++) {
1077 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1078 int64_t diff = FFABS(pts_buffer[i] - dts)
1079 + (uint64_t)st->pts_reorder_error[i];
1080 diff = FFMAX(diff, st->pts_reorder_error[i]);
1081 st->pts_reorder_error[i] = diff;
1082 st->pts_reorder_error_count[i]++;
1083 if (st->pts_reorder_error_count[i] > 250) {
1084 st->pts_reorder_error[i] >>= 1;
1085 st->pts_reorder_error_count[i] >>= 1;
1092 if (dts == AV_NOPTS_VALUE)
1093 dts = pts_buffer[0];
1099 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1100 * of the packets in a window.
1102 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1103 AVPacketList *pkt_buffer)
1105 AVStream *st = s->streams[stream_index];
1106 int delay = st->internal->avctx->has_b_frames;
1109 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1111 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1112 pts_buffer[i] = AV_NOPTS_VALUE;
1114 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1115 if (pkt_buffer->pkt.stream_index != stream_index)
1118 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1119 pts_buffer[0] = pkt_buffer->pkt.pts;
1120 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1121 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1123 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1128 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1129 int64_t dts, int64_t pts, AVPacket *pkt)
1131 AVStream *st = s->streams[stream_index];
1132 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1133 AVPacketList *pktl_it;
1137 if (st->first_dts != AV_NOPTS_VALUE ||
1138 dts == AV_NOPTS_VALUE ||
1139 st->cur_dts == AV_NOPTS_VALUE ||
1140 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1144 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1146 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1148 if (is_relative(pts))
1151 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1152 if (pktl_it->pkt.stream_index != stream_index)
1154 if (is_relative(pktl_it->pkt.pts))
1155 pktl_it->pkt.pts += shift;
1157 if (is_relative(pktl_it->pkt.dts))
1158 pktl_it->pkt.dts += shift;
1160 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1161 st->start_time = pktl_it->pkt.pts;
1162 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1163 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1167 if (has_decode_delay_been_guessed(st)) {
1168 update_dts_from_pts(s, stream_index, pktl);
1171 if (st->start_time == AV_NOPTS_VALUE) {
1172 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1173 st->start_time = pts;
1175 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1176 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1180 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1181 int stream_index, int duration)
1183 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1184 int64_t cur_dts = RELATIVE_TS_BASE;
1186 if (st->first_dts != AV_NOPTS_VALUE) {
1187 if (st->update_initial_durations_done)
1189 st->update_initial_durations_done = 1;
1190 cur_dts = st->first_dts;
1191 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1192 if (pktl->pkt.stream_index == stream_index) {
1193 if (pktl->pkt.pts != pktl->pkt.dts ||
1194 pktl->pkt.dts != AV_NOPTS_VALUE ||
1197 cur_dts -= duration;
1200 if (pktl && pktl->pkt.dts != st->first_dts) {
1201 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1202 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1206 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1209 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1210 st->first_dts = cur_dts;
1211 } else if (st->cur_dts != RELATIVE_TS_BASE)
1214 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1215 if (pktl->pkt.stream_index != stream_index)
1217 if ((pktl->pkt.pts == pktl->pkt.dts ||
1218 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1219 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1220 pktl->pkt.dts == st->first_dts ||
1221 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1222 !pktl->pkt.duration) {
1223 pktl->pkt.dts = cur_dts;
1224 if (!st->internal->avctx->has_b_frames)
1225 pktl->pkt.pts = cur_dts;
1226 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1227 pktl->pkt.duration = duration;
1230 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1233 st->cur_dts = cur_dts;
1236 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1237 AVCodecParserContext *pc, AVPacket *pkt,
1238 int64_t next_dts, int64_t next_pts)
1240 int num, den, presentation_delayed, delay, i;
1242 AVRational duration;
1243 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1244 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1246 if (s->flags & AVFMT_FLAG_NOFILLIN)
1249 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1250 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1251 if (st->last_dts_for_order_check <= pkt->dts) {
1254 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1255 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1257 st->last_dts_for_order_check);
1258 st->dts_misordered++;
1260 if (st->dts_ordered + st->dts_misordered > 250) {
1261 st->dts_ordered >>= 1;
1262 st->dts_misordered >>= 1;
1266 st->last_dts_for_order_check = pkt->dts;
1267 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1268 pkt->dts = AV_NOPTS_VALUE;
1271 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1272 pkt->dts = AV_NOPTS_VALUE;
1274 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1275 && !st->internal->avctx->has_b_frames)
1276 //FIXME Set low_delay = 0 when has_b_frames = 1
1277 st->internal->avctx->has_b_frames = 1;
1279 /* do we have a video B-frame ? */
1280 delay = st->internal->avctx->has_b_frames;
1281 presentation_delayed = 0;
1283 /* XXX: need has_b_frame, but cannot get it if the codec is
1284 * not initialized */
1286 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1287 presentation_delayed = 1;
1289 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1290 st->pts_wrap_bits < 63 &&
1291 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1292 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1293 pkt->dts -= 1LL << st->pts_wrap_bits;
1295 pkt->pts += 1LL << st->pts_wrap_bits;
1298 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1299 * We take the conservative approach and discard both.
1300 * Note: If this is misbehaving for an H.264 file, then possibly
1301 * presentation_delayed is not set correctly. */
1302 if (delay == 1 && pkt->dts == pkt->pts &&
1303 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1304 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1305 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1306 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1307 pkt->dts = AV_NOPTS_VALUE;
1310 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1311 if (pkt->duration <= 0) {
1312 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1314 duration = (AVRational) {num, den};
1315 pkt->duration = av_rescale_rnd(1,
1316 num * (int64_t) st->time_base.den,
1317 den * (int64_t) st->time_base.num,
1322 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1323 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1325 /* Correct timestamps with byte offset if demuxers only have timestamps
1326 * on packet boundaries */
1327 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1328 /* this will estimate bitrate based on this frame's duration and size */
1329 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1330 if (pkt->pts != AV_NOPTS_VALUE)
1332 if (pkt->dts != AV_NOPTS_VALUE)
1336 /* This may be redundant, but it should not hurt. */
1337 if (pkt->dts != AV_NOPTS_VALUE &&
1338 pkt->pts != AV_NOPTS_VALUE &&
1339 pkt->pts > pkt->dts)
1340 presentation_delayed = 1;
1342 if (s->debug & FF_FDEBUG_TS)
1343 av_log(s, AV_LOG_DEBUG,
1344 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1345 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1346 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1348 /* Interpolate PTS and DTS if they are not present. We skip H264
1349 * currently because delay and has_b_frames are not reliably set. */
1350 if ((delay == 0 || (delay == 1 && pc)) &&
1352 if (presentation_delayed) {
1353 /* DTS = decompression timestamp */
1354 /* PTS = presentation timestamp */
1355 if (pkt->dts == AV_NOPTS_VALUE)
1356 pkt->dts = st->last_IP_pts;
1357 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1358 if (pkt->dts == AV_NOPTS_VALUE)
1359 pkt->dts = st->cur_dts;
1361 /* This is tricky: the dts must be incremented by the duration
1362 * of the frame we are displaying, i.e. the last I- or P-frame. */
1363 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1364 st->last_IP_duration = pkt->duration;
1365 if (pkt->dts != AV_NOPTS_VALUE)
1366 st->cur_dts = pkt->dts + st->last_IP_duration;
1367 if (pkt->dts != AV_NOPTS_VALUE &&
1368 pkt->pts == AV_NOPTS_VALUE &&
1369 st->last_IP_duration > 0 &&
1370 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1371 next_dts != next_pts &&
1372 next_pts != AV_NOPTS_VALUE)
1373 pkt->pts = next_dts;
1375 if ((uint64_t)pkt->duration <= INT32_MAX)
1376 st->last_IP_duration = pkt->duration;
1377 st->last_IP_pts = pkt->pts;
1378 /* Cannot compute PTS if not present (we can compute it only
1379 * by knowing the future. */
1380 } else if (pkt->pts != AV_NOPTS_VALUE ||
1381 pkt->dts != AV_NOPTS_VALUE ||
1382 pkt->duration > 0 ) {
1384 /* presentation is not delayed : PTS and DTS are the same */
1385 if (pkt->pts == AV_NOPTS_VALUE)
1386 pkt->pts = pkt->dts;
1387 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1389 if (pkt->pts == AV_NOPTS_VALUE)
1390 pkt->pts = st->cur_dts;
1391 pkt->dts = pkt->pts;
1392 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1393 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1397 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1398 st->pts_buffer[0] = pkt->pts;
1399 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1400 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1402 if(has_decode_delay_been_guessed(st))
1403 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1405 // We skipped it above so we try here.
1407 // This should happen on the first packet
1408 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1409 if (pkt->dts > st->cur_dts)
1410 st->cur_dts = pkt->dts;
1412 if (s->debug & FF_FDEBUG_TS)
1413 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1414 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1417 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1418 pkt->flags |= AV_PKT_FLAG_KEY;
1419 #if FF_API_CONVERGENCE_DURATION
1420 FF_DISABLE_DEPRECATION_WARNINGS
1422 pkt->convergence_duration = pc->convergence_duration;
1423 FF_ENABLE_DEPRECATION_WARNINGS
1427 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1429 AVPacketList *tmp = *pkt_buf;
1432 AVPacketList *pktl = tmp;
1434 av_packet_unref(&pktl->pkt);
1438 *pkt_buf_end = NULL;
1442 * Parse a packet, add all split parts to parse_queue.
1444 * @param pkt Packet to parse; must not be NULL.
1445 * @param flush Indicates whether to flush. If set, pkt must be blank.
1447 static int parse_packet(AVFormatContext *s, AVPacket *pkt,
1448 int stream_index, int flush)
1451 AVStream *st = s->streams[stream_index];
1452 uint8_t *data = pkt->data;
1453 int size = pkt->size;
1454 int ret = 0, got_output = flush;
1456 if (size || flush) {
1457 av_init_packet(&out_pkt);
1458 } else if (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1459 // preserve 0-size sync packets
1460 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1463 while (size > 0 || (flush && got_output)) {
1465 int64_t next_pts = pkt->pts;
1466 int64_t next_dts = pkt->dts;
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 */
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, i, got_packet = 0;
1580 AVDictionary *metadata = NULL;
1582 while (!got_packet && !s->internal->parse_queue) {
1585 /* read next packet */
1586 ret = ff_read_packet(s, pkt);
1588 if (ret == AVERROR(EAGAIN))
1590 /* flush the parsers */
1591 for (i = 0; i < s->nb_streams; i++) {
1593 if (st->parser && st->need_parsing)
1594 parse_packet(s, pkt, st->index, 1);
1596 /* all remaining packets are now in parse_queue =>
1597 * really terminate parsing */
1601 st = s->streams[pkt->stream_index];
1603 /* update context if required */
1604 if (st->internal->need_context_update) {
1605 if (avcodec_is_open(st->internal->avctx)) {
1606 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1607 avcodec_close(st->internal->avctx);
1608 st->info->found_decoder = 0;
1611 /* close parser, because it depends on the codec */
1612 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1613 av_parser_close(st->parser);
1617 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1619 av_packet_unref(pkt);
1623 #if FF_API_LAVF_AVCTX
1624 FF_DISABLE_DEPRECATION_WARNINGS
1625 /* update deprecated public codec context */
1626 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1628 av_packet_unref(pkt);
1631 FF_ENABLE_DEPRECATION_WARNINGS
1634 st->internal->need_context_update = 0;
1637 if (pkt->pts != AV_NOPTS_VALUE &&
1638 pkt->dts != AV_NOPTS_VALUE &&
1639 pkt->pts < pkt->dts) {
1640 av_log(s, AV_LOG_WARNING,
1641 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1643 av_ts2str(pkt->pts),
1644 av_ts2str(pkt->dts),
1647 if (s->debug & FF_FDEBUG_TS)
1648 av_log(s, AV_LOG_DEBUG,
1649 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1651 av_ts2str(pkt->pts),
1652 av_ts2str(pkt->dts),
1653 pkt->size, pkt->duration, pkt->flags);
1655 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1656 st->parser = av_parser_init(st->codecpar->codec_id);
1658 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1659 "%s, packets or times may be invalid.\n",
1660 avcodec_get_name(st->codecpar->codec_id));
1661 /* no parser available: just output the raw packets */
1662 st->need_parsing = AVSTREAM_PARSE_NONE;
1663 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1664 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1665 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1666 st->parser->flags |= PARSER_FLAG_ONCE;
1667 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1668 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1671 if (!st->need_parsing || !st->parser) {
1672 /* no parsing needed: we just output the packet as is */
1673 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1674 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1675 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1676 ff_reduce_index(s, st->index);
1677 av_add_index_entry(st, pkt->pos, pkt->dts,
1678 0, 0, AVINDEX_KEYFRAME);
1681 } else if (st->discard < AVDISCARD_ALL) {
1682 if ((ret = parse_packet(s, pkt, pkt->stream_index, 0)) < 0)
1684 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1685 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1686 st->codecpar->channels = st->internal->avctx->channels;
1687 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1688 st->codecpar->codec_id = st->internal->avctx->codec_id;
1691 av_packet_unref(pkt);
1693 if (pkt->flags & AV_PKT_FLAG_KEY)
1694 st->skip_to_keyframe = 0;
1695 if (st->skip_to_keyframe) {
1696 av_packet_unref(pkt);
1701 if (!got_packet && s->internal->parse_queue)
1702 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1705 AVStream *st = s->streams[pkt->stream_index];
1706 int discard_padding = 0;
1707 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1708 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1709 int64_t sample = ts_to_samples(st, pts);
1710 int duration = ts_to_samples(st, pkt->duration);
1711 int64_t end_sample = sample + duration;
1712 if (duration > 0 && end_sample >= st->first_discard_sample &&
1713 sample < st->last_discard_sample)
1714 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1716 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1717 st->skip_samples = st->start_skip_samples;
1718 if (st->skip_samples || discard_padding) {
1719 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1721 AV_WL32(p, st->skip_samples);
1722 AV_WL32(p + 4, discard_padding);
1723 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1725 st->skip_samples = 0;
1728 if (st->inject_global_side_data) {
1729 for (i = 0; i < st->nb_side_data; i++) {
1730 AVPacketSideData *src_sd = &st->side_data[i];
1733 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1736 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1738 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1742 memcpy(dst_data, src_sd->data, src_sd->size);
1744 st->inject_global_side_data = 0;
1748 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1750 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1751 av_dict_copy(&s->metadata, metadata, 0);
1752 av_dict_free(&metadata);
1753 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1756 #if FF_API_LAVF_AVCTX
1757 update_stream_avctx(s);
1760 if (s->debug & FF_FDEBUG_TS)
1761 av_log(s, AV_LOG_DEBUG,
1762 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1763 "size=%d, duration=%"PRId64", flags=%d\n",
1765 av_ts2str(pkt->pts),
1766 av_ts2str(pkt->dts),
1767 pkt->size, pkt->duration, pkt->flags);
1769 /* A demuxer might have returned EOF because of an IO error, let's
1770 * propagate this back to the user. */
1771 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1777 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1779 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1785 ret = s->internal->packet_buffer
1786 ? ff_packet_list_get(&s->internal->packet_buffer,
1787 &s->internal->packet_buffer_end, pkt)
1788 : read_frame_internal(s, pkt);
1795 AVPacketList *pktl = s->internal->packet_buffer;
1798 AVPacket *next_pkt = &pktl->pkt;
1800 if (next_pkt->dts != AV_NOPTS_VALUE) {
1801 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1802 // last dts seen for this stream. if any of packets following
1803 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1804 int64_t last_dts = next_pkt->dts;
1805 av_assert2(wrap_bits <= 64);
1806 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1807 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1808 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1809 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1811 next_pkt->pts = pktl->pkt.dts;
1813 if (last_dts != AV_NOPTS_VALUE) {
1814 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1815 last_dts = pktl->pkt.dts;
1820 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1821 // Fixing the last reference frame had none pts issue (For MXF etc).
1822 // We only do this when
1824 // 2. we are not able to resolve a pts value for current packet.
1825 // 3. the packets for this stream at the end of the files had valid dts.
1826 next_pkt->pts = last_dts + next_pkt->duration;
1828 pktl = s->internal->packet_buffer;
1831 /* read packet from packet buffer, if there is data */
1832 st = s->streams[next_pkt->stream_index];
1833 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1834 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1835 ret = ff_packet_list_get(&s->internal->packet_buffer,
1836 &s->internal->packet_buffer_end, pkt);
1841 ret = read_frame_internal(s, pkt);
1843 if (pktl && ret != AVERROR(EAGAIN)) {
1850 ret = ff_packet_list_put(&s->internal->packet_buffer,
1851 &s->internal->packet_buffer_end,
1854 av_packet_unref(pkt);
1861 st = s->streams[pkt->stream_index];
1862 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1863 ff_reduce_index(s, st->index);
1864 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1867 if (is_relative(pkt->dts))
1868 pkt->dts -= RELATIVE_TS_BASE;
1869 if (is_relative(pkt->pts))
1870 pkt->pts -= RELATIVE_TS_BASE;
1875 /* XXX: suppress the packet queue */
1876 static void flush_packet_queue(AVFormatContext *s)
1880 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1881 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1882 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1884 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1887 /*******************************************************/
1890 int av_find_default_stream_index(AVFormatContext *s)
1894 int best_stream = 0;
1895 int best_score = INT_MIN;
1897 if (s->nb_streams <= 0)
1899 for (i = 0; i < s->nb_streams; i++) {
1902 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1903 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1905 if (st->codecpar->width && st->codecpar->height)
1909 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1910 if (st->codecpar->sample_rate)
1913 if (st->codec_info_nb_frames)
1916 if (st->discard != AVDISCARD_ALL)
1919 if (score > best_score) {
1927 /** Flush the frame reader. */
1928 void ff_read_frame_flush(AVFormatContext *s)
1933 flush_packet_queue(s);
1935 /* Reset read state for each stream. */
1936 for (i = 0; i < s->nb_streams; i++) {
1940 av_parser_close(st->parser);
1943 st->last_IP_pts = AV_NOPTS_VALUE;
1944 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1945 if (st->first_dts == AV_NOPTS_VALUE)
1946 st->cur_dts = RELATIVE_TS_BASE;
1948 /* We set the current DTS to an unspecified origin. */
1949 st->cur_dts = AV_NOPTS_VALUE;
1951 st->probe_packets = MAX_PROBE_PACKETS;
1953 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1954 st->pts_buffer[j] = AV_NOPTS_VALUE;
1956 if (s->internal->inject_global_side_data)
1957 st->inject_global_side_data = 1;
1959 st->skip_samples = 0;
1963 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1967 for (i = 0; i < s->nb_streams; i++) {
1968 AVStream *st = s->streams[i];
1971 av_rescale(timestamp,
1972 st->time_base.den * (int64_t) ref_st->time_base.num,
1973 st->time_base.num * (int64_t) ref_st->time_base.den);
1977 void ff_reduce_index(AVFormatContext *s, int stream_index)
1979 AVStream *st = s->streams[stream_index];
1980 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1982 if ((unsigned) st->nb_index_entries >= max_entries) {
1984 for (i = 0; 2 * i < st->nb_index_entries; i++)
1985 st->index_entries[i] = st->index_entries[2 * i];
1986 st->nb_index_entries = i;
1990 int ff_add_index_entry(AVIndexEntry **index_entries,
1991 int *nb_index_entries,
1992 unsigned int *index_entries_allocated_size,
1993 int64_t pos, int64_t timestamp,
1994 int size, int distance, int flags)
1996 AVIndexEntry *entries, *ie;
1999 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
2002 if (timestamp == AV_NOPTS_VALUE)
2003 return AVERROR(EINVAL);
2005 if (size < 0 || size > 0x3FFFFFFF)
2006 return AVERROR(EINVAL);
2008 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2009 timestamp -= RELATIVE_TS_BASE;
2011 entries = av_fast_realloc(*index_entries,
2012 index_entries_allocated_size,
2013 (*nb_index_entries + 1) *
2014 sizeof(AVIndexEntry));
2018 *index_entries = entries;
2020 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2021 timestamp, AVSEEK_FLAG_ANY);
2024 index = (*nb_index_entries)++;
2025 ie = &entries[index];
2026 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2028 ie = &entries[index];
2029 if (ie->timestamp != timestamp) {
2030 if (ie->timestamp <= timestamp)
2032 memmove(entries + index + 1, entries + index,
2033 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2034 (*nb_index_entries)++;
2035 } else if (ie->pos == pos && distance < ie->min_distance)
2036 // do not reduce the distance
2037 distance = ie->min_distance;
2041 ie->timestamp = timestamp;
2042 ie->min_distance = distance;
2049 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2050 int size, int distance, int flags)
2052 timestamp = wrap_timestamp(st, timestamp);
2053 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2054 &st->index_entries_allocated_size, pos,
2055 timestamp, size, distance, flags);
2058 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2059 int64_t wanted_timestamp, int flags)
2067 // Optimize appending index entries at the end.
2068 if (b && entries[b - 1].timestamp < wanted_timestamp)
2074 // Search for the next non-discarded packet.
2075 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2077 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2083 timestamp = entries[m].timestamp;
2084 if (timestamp >= wanted_timestamp)
2086 if (timestamp <= wanted_timestamp)
2089 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2091 if (!(flags & AVSEEK_FLAG_ANY))
2092 while (m >= 0 && m < nb_entries &&
2093 !(entries[m].flags & AVINDEX_KEYFRAME))
2094 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2096 if (m == nb_entries)
2101 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2104 int64_t pos_delta = 0;
2106 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2107 const char *proto = avio_find_protocol_name(s->url);
2110 av_log(s, AV_LOG_INFO,
2111 "Protocol name not provided, cannot determine if input is local or "
2112 "a network protocol, buffers and access patterns cannot be configured "
2113 "optimally without knowing the protocol\n");
2116 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2119 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2120 AVStream *st1 = s->streams[ist1];
2121 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2122 AVStream *st2 = s->streams[ist2];
2128 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2129 AVIndexEntry *e1 = &st1->index_entries[i1];
2130 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2132 skip = FFMAX(skip, e1->size);
2133 for (; i2 < st2->nb_index_entries; i2++) {
2134 AVIndexEntry *e2 = &st2->index_entries[i2];
2135 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2136 if (e2_pts - e1_pts < time_tolerance)
2138 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2146 /* XXX This could be adjusted depending on protocol*/
2147 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2148 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2150 /* realloc the buffer and the original data will be retained */
2151 if (ffio_realloc_buf(s->pb, pos_delta)) {
2152 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2156 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2159 if (skip < (1<<23)) {
2160 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2164 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2166 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2167 wanted_timestamp, flags);
2170 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2171 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2173 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2174 if (stream_index >= 0)
2175 ts = wrap_timestamp(s->streams[stream_index], ts);
2179 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2180 int64_t target_ts, int flags)
2182 const AVInputFormat *avif = s->iformat;
2183 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2184 int64_t ts_min, ts_max, ts;
2189 if (stream_index < 0)
2192 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2195 ts_min = AV_NOPTS_VALUE;
2196 pos_limit = -1; // GCC falsely says it may be uninitialized.
2198 st = s->streams[stream_index];
2199 if (st->index_entries) {
2202 /* FIXME: Whole function must be checked for non-keyframe entries in
2203 * index case, especially read_timestamp(). */
2204 index = av_index_search_timestamp(st, target_ts,
2205 flags | AVSEEK_FLAG_BACKWARD);
2206 index = FFMAX(index, 0);
2207 e = &st->index_entries[index];
2209 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2211 ts_min = e->timestamp;
2212 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2213 pos_min, av_ts2str(ts_min));
2215 av_assert1(index == 0);
2218 index = av_index_search_timestamp(st, target_ts,
2219 flags & ~AVSEEK_FLAG_BACKWARD);
2220 av_assert0(index < st->nb_index_entries);
2222 e = &st->index_entries[index];
2223 av_assert1(e->timestamp >= target_ts);
2225 ts_max = e->timestamp;
2226 pos_limit = pos_max - e->min_distance;
2227 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2228 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2232 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2233 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2238 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2241 ff_read_frame_flush(s);
2242 ff_update_cur_dts(s, st, ts);
2247 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2248 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2250 int64_t step = 1024;
2251 int64_t limit, ts_max;
2252 int64_t filesize = avio_size(s->pb);
2253 int64_t pos_max = filesize - 1;
2256 pos_max = FFMAX(0, (pos_max) - step);
2257 ts_max = ff_read_timestamp(s, stream_index,
2258 &pos_max, limit, read_timestamp);
2260 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2261 if (ts_max == AV_NOPTS_VALUE)
2265 int64_t tmp_pos = pos_max + 1;
2266 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2267 &tmp_pos, INT64_MAX, read_timestamp);
2268 if (tmp_ts == AV_NOPTS_VALUE)
2270 av_assert0(tmp_pos > pos_max);
2273 if (tmp_pos >= filesize)
2285 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2286 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2287 int64_t ts_min, int64_t ts_max,
2288 int flags, int64_t *ts_ret,
2289 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2290 int64_t *, int64_t))
2297 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2299 if (ts_min == AV_NOPTS_VALUE) {
2300 pos_min = s->internal->data_offset;
2301 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2302 if (ts_min == AV_NOPTS_VALUE)
2306 if (ts_min >= target_ts) {
2311 if (ts_max == AV_NOPTS_VALUE) {
2312 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2314 pos_limit = pos_max;
2317 if (ts_max <= target_ts) {
2322 av_assert0(ts_min < ts_max);
2325 while (pos_min < pos_limit) {
2326 av_log(s, AV_LOG_TRACE,
2327 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2328 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2329 av_assert0(pos_limit <= pos_max);
2331 if (no_change == 0) {
2332 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2333 // interpolate position (better than dichotomy)
2334 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2336 pos_min - approximate_keyframe_distance;
2337 } else if (no_change == 1) {
2338 // bisection if interpolation did not change min / max pos last time
2339 pos = (pos_min + pos_limit) >> 1;
2341 /* linear search if bisection failed, can only happen if there
2342 * are very few or no keyframes between min/max */
2347 else if (pos > pos_limit)
2351 // May pass pos_limit instead of -1.
2352 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2357 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2358 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2359 pos_min, pos, pos_max,
2360 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2361 pos_limit, start_pos, no_change);
2362 if (ts == AV_NOPTS_VALUE) {
2363 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2366 if (target_ts <= ts) {
2367 pos_limit = start_pos - 1;
2371 if (target_ts >= ts) {
2377 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2378 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2381 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2383 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2384 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2385 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2391 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2392 int64_t pos, int flags)
2394 int64_t pos_min, pos_max;
2396 pos_min = s->internal->data_offset;
2397 pos_max = avio_size(s->pb) - 1;
2401 else if (pos > pos_max)
2404 avio_seek(s->pb, pos, SEEK_SET);
2406 s->io_repositioned = 1;
2411 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2412 int64_t timestamp, int flags)
2419 st = s->streams[stream_index];
2421 index = av_index_search_timestamp(st, timestamp, flags);
2423 if (index < 0 && st->nb_index_entries &&
2424 timestamp < st->index_entries[0].timestamp)
2427 if (index < 0 || index == st->nb_index_entries - 1) {
2431 if (st->nb_index_entries) {
2432 av_assert0(st->index_entries);
2433 ie = &st->index_entries[st->nb_index_entries - 1];
2434 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2436 ff_update_cur_dts(s, st, ie->timestamp);
2438 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2444 read_status = av_read_frame(s, &pkt);
2445 } while (read_status == AVERROR(EAGAIN));
2446 if (read_status < 0)
2448 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2449 if (pkt.flags & AV_PKT_FLAG_KEY) {
2450 av_packet_unref(&pkt);
2453 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2454 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);
2455 av_packet_unref(&pkt);
2459 av_packet_unref(&pkt);
2461 index = av_index_search_timestamp(st, timestamp, flags);
2466 ff_read_frame_flush(s);
2467 if (s->iformat->read_seek)
2468 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2470 ie = &st->index_entries[index];
2471 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2473 ff_update_cur_dts(s, st, ie->timestamp);
2478 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2479 int64_t timestamp, int flags)
2484 if (flags & AVSEEK_FLAG_BYTE) {
2485 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2487 ff_read_frame_flush(s);
2488 return seek_frame_byte(s, stream_index, timestamp, flags);
2491 if (stream_index < 0) {
2492 stream_index = av_find_default_stream_index(s);
2493 if (stream_index < 0)
2496 st = s->streams[stream_index];
2497 /* timestamp for default must be expressed in AV_TIME_BASE units */
2498 timestamp = av_rescale(timestamp, st->time_base.den,
2499 AV_TIME_BASE * (int64_t) st->time_base.num);
2502 /* first, we try the format specific seek */
2503 if (s->iformat->read_seek) {
2504 ff_read_frame_flush(s);
2505 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2511 if (s->iformat->read_timestamp &&
2512 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2513 ff_read_frame_flush(s);
2514 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2515 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2516 ff_read_frame_flush(s);
2517 return seek_frame_generic(s, stream_index, timestamp, flags);
2522 int av_seek_frame(AVFormatContext *s, int stream_index,
2523 int64_t timestamp, int flags)
2527 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2528 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2529 if ((flags & AVSEEK_FLAG_BACKWARD))
2533 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2534 flags & ~AVSEEK_FLAG_BACKWARD);
2537 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2540 ret = avformat_queue_attached_pictures(s);
2545 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2546 int64_t ts, int64_t max_ts, int flags)
2548 if (min_ts > ts || max_ts < ts)
2550 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2551 return AVERROR(EINVAL);
2554 flags |= AVSEEK_FLAG_ANY;
2555 flags &= ~AVSEEK_FLAG_BACKWARD;
2557 if (s->iformat->read_seek2) {
2559 ff_read_frame_flush(s);
2561 if (stream_index == -1 && s->nb_streams == 1) {
2562 AVRational time_base = s->streams[0]->time_base;
2563 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2564 min_ts = av_rescale_rnd(min_ts, time_base.den,
2565 time_base.num * (int64_t)AV_TIME_BASE,
2566 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2567 max_ts = av_rescale_rnd(max_ts, time_base.den,
2568 time_base.num * (int64_t)AV_TIME_BASE,
2569 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2573 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2577 ret = avformat_queue_attached_pictures(s);
2581 if (s->iformat->read_timestamp) {
2582 // try to seek via read_timestamp()
2585 // Fall back on old API if new is not implemented but old is.
2586 // Note the old API has somewhat different semantics.
2587 if (s->iformat->read_seek || 1) {
2588 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2589 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2590 if (ret<0 && ts != min_ts && max_ts != ts) {
2591 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2593 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2598 // try some generic seek like seek_frame_generic() but with new ts semantics
2599 return -1; //unreachable
2602 int avformat_flush(AVFormatContext *s)
2604 ff_read_frame_flush(s);
2608 /*******************************************************/
2611 * Return TRUE if the stream has accurate duration in any stream.
2613 * @return TRUE if the stream has accurate duration for at least one component.
2615 static int has_duration(AVFormatContext *ic)
2620 for (i = 0; i < ic->nb_streams; i++) {
2621 st = ic->streams[i];
2622 if (st->duration != AV_NOPTS_VALUE)
2625 if (ic->duration != AV_NOPTS_VALUE)
2631 * Estimate the stream timings from the one of each components.
2633 * Also computes the global bitrate if possible.
2635 static void update_stream_timings(AVFormatContext *ic)
2637 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2638 int64_t duration, duration1, duration_text, filesize;
2642 start_time = INT64_MAX;
2643 start_time_text = INT64_MAX;
2644 end_time = INT64_MIN;
2645 end_time_text = INT64_MIN;
2646 duration = INT64_MIN;
2647 duration_text = INT64_MIN;
2649 for (i = 0; i < ic->nb_streams; i++) {
2650 AVStream *st = ic->streams[i];
2651 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2652 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2653 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2654 start_time1 = av_rescale_q(st->start_time, st->time_base,
2657 start_time_text = FFMIN(start_time_text, start_time1);
2659 start_time = FFMIN(start_time, start_time1);
2660 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2662 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2663 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2664 end_time1 += start_time1;
2666 end_time_text = FFMAX(end_time_text, end_time1);
2668 end_time = FFMAX(end_time, end_time1);
2670 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2671 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2672 p->start_time = start_time1;
2673 if (p->end_time < end_time1)
2674 p->end_time = end_time1;
2677 if (st->duration != AV_NOPTS_VALUE) {
2678 duration1 = av_rescale_q(st->duration, st->time_base,
2681 duration_text = FFMAX(duration_text, duration1);
2683 duration = FFMAX(duration, duration1);
2686 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2687 start_time = start_time_text;
2688 else if (start_time > start_time_text)
2689 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2691 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2692 end_time = end_time_text;
2693 else if (end_time < end_time_text)
2694 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2696 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2697 duration = duration_text;
2698 else if (duration < duration_text)
2699 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2701 if (start_time != INT64_MAX) {
2702 ic->start_time = start_time;
2703 if (end_time != INT64_MIN) {
2704 if (ic->nb_programs > 1) {
2705 for (i = 0; i < ic->nb_programs; i++) {
2706 p = ic->programs[i];
2707 if (p->start_time != AV_NOPTS_VALUE &&
2708 p->end_time > p->start_time &&
2709 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2710 duration = FFMAX(duration, p->end_time - p->start_time);
2712 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2713 duration = FFMAX(duration, end_time - start_time);
2717 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2718 ic->duration = duration;
2720 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2721 /* compute the bitrate */
2722 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2723 (double) ic->duration;
2724 if (bitrate >= 0 && bitrate <= INT64_MAX)
2725 ic->bit_rate = bitrate;
2729 static void fill_all_stream_timings(AVFormatContext *ic)
2734 update_stream_timings(ic);
2735 for (i = 0; i < ic->nb_streams; i++) {
2736 st = ic->streams[i];
2737 if (st->start_time == AV_NOPTS_VALUE) {
2738 if (ic->start_time != AV_NOPTS_VALUE)
2739 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2741 if (ic->duration != AV_NOPTS_VALUE)
2742 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2748 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2750 int64_t filesize, duration;
2751 int i, show_warning = 0;
2754 /* if bit_rate is already set, we believe it */
2755 if (ic->bit_rate <= 0) {
2756 int64_t bit_rate = 0;
2757 for (i = 0; i < ic->nb_streams; i++) {
2758 st = ic->streams[i];
2759 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2760 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2761 if (st->codecpar->bit_rate > 0) {
2762 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2766 bit_rate += st->codecpar->bit_rate;
2767 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2768 // If we have a videostream with packets but without a bitrate
2769 // then consider the sum not known
2774 ic->bit_rate = bit_rate;
2777 /* if duration is already set, we believe it */
2778 if (ic->duration == AV_NOPTS_VALUE &&
2779 ic->bit_rate != 0) {
2780 filesize = ic->pb ? avio_size(ic->pb) : 0;
2781 if (filesize > ic->internal->data_offset) {
2782 filesize -= ic->internal->data_offset;
2783 for (i = 0; i < ic->nb_streams; i++) {
2784 st = ic->streams[i];
2785 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2786 && st->duration == AV_NOPTS_VALUE) {
2787 duration = av_rescale(8 * filesize, st->time_base.den,
2789 (int64_t) st->time_base.num);
2790 st->duration = duration;
2797 av_log(ic, AV_LOG_WARNING,
2798 "Estimating duration from bitrate, this may be inaccurate\n");
2801 #define DURATION_MAX_READ_SIZE 250000LL
2802 #define DURATION_MAX_RETRY 6
2804 /* only usable for MPEG-PS streams */
2805 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2807 AVPacket pkt1, *pkt = &pkt1;
2809 int num, den, read_size, i, ret;
2810 int found_duration = 0;
2812 int64_t filesize, offset, duration;
2815 /* flush packet queue */
2816 flush_packet_queue(ic);
2818 for (i = 0; i < ic->nb_streams; i++) {
2819 st = ic->streams[i];
2820 if (st->start_time == AV_NOPTS_VALUE &&
2821 st->first_dts == AV_NOPTS_VALUE &&
2822 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2823 av_log(ic, AV_LOG_WARNING,
2824 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2827 av_parser_close(st->parser);
2832 if (ic->skip_estimate_duration_from_pts) {
2833 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2834 goto skip_duration_calc;
2837 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2838 /* estimate the end time (duration) */
2839 /* XXX: may need to support wrapping */
2840 filesize = ic->pb ? avio_size(ic->pb) : 0;
2842 is_end = found_duration;
2843 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2847 avio_seek(ic->pb, offset, SEEK_SET);
2850 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2854 ret = ff_read_packet(ic, pkt);
2855 } while (ret == AVERROR(EAGAIN));
2858 read_size += pkt->size;
2859 st = ic->streams[pkt->stream_index];
2860 if (pkt->pts != AV_NOPTS_VALUE &&
2861 (st->start_time != AV_NOPTS_VALUE ||
2862 st->first_dts != AV_NOPTS_VALUE)) {
2863 if (pkt->duration == 0) {
2864 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2866 pkt->duration = av_rescale_rnd(1,
2867 num * (int64_t) st->time_base.den,
2868 den * (int64_t) st->time_base.num,
2872 duration = pkt->pts + pkt->duration;
2874 if (st->start_time != AV_NOPTS_VALUE)
2875 duration -= st->start_time;
2877 duration -= st->first_dts;
2879 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2880 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2881 st->duration = duration;
2882 st->info->last_duration = duration;
2885 av_packet_unref(pkt);
2888 /* check if all audio/video streams have valid duration */
2891 for (i = 0; i < ic->nb_streams; i++) {
2892 st = ic->streams[i];
2893 switch (st->codecpar->codec_type) {
2894 case AVMEDIA_TYPE_VIDEO:
2895 case AVMEDIA_TYPE_AUDIO:
2896 if (st->duration == AV_NOPTS_VALUE)
2903 ++retry <= DURATION_MAX_RETRY);
2905 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2907 /* warn about audio/video streams which duration could not be estimated */
2908 for (i = 0; i < ic->nb_streams; i++) {
2909 st = ic->streams[i];
2910 if (st->duration == AV_NOPTS_VALUE) {
2911 switch (st->codecpar->codec_type) {
2912 case AVMEDIA_TYPE_VIDEO:
2913 case AVMEDIA_TYPE_AUDIO:
2914 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2915 av_log(ic, AV_LOG_WARNING, "stream %d : no PTS found at end of file, duration not set\n", i);
2917 av_log(ic, AV_LOG_WARNING, "stream %d : no TS found at start of file, duration not set\n", i);
2922 fill_all_stream_timings(ic);
2924 avio_seek(ic->pb, old_offset, SEEK_SET);
2925 for (i = 0; i < ic->nb_streams; i++) {
2928 st = ic->streams[i];
2929 st->cur_dts = st->first_dts;
2930 st->last_IP_pts = AV_NOPTS_VALUE;
2931 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2932 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2933 st->pts_buffer[j] = AV_NOPTS_VALUE;
2937 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2941 /* get the file size, if possible */
2942 if (ic->iformat->flags & AVFMT_NOFILE) {
2945 file_size = avio_size(ic->pb);
2946 file_size = FFMAX(0, file_size);
2949 if ((!strcmp(ic->iformat->name, "mpeg") ||
2950 !strcmp(ic->iformat->name, "mpegts")) &&
2951 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2952 /* get accurate estimate from the PTSes */
2953 estimate_timings_from_pts(ic, old_offset);
2954 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2955 } else if (has_duration(ic)) {
2956 /* at least one component has timings - we use them for all
2958 fill_all_stream_timings(ic);
2959 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2961 /* less precise: use bitrate info */
2962 estimate_timings_from_bit_rate(ic);
2963 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2965 update_stream_timings(ic);
2969 AVStream av_unused *st;
2970 for (i = 0; i < ic->nb_streams; i++) {
2971 st = ic->streams[i];
2972 if (st->time_base.den)
2973 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2974 (double) st->start_time * av_q2d(st->time_base),
2975 (double) st->duration * av_q2d(st->time_base));
2977 av_log(ic, AV_LOG_TRACE,
2978 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2979 (double) ic->start_time / AV_TIME_BASE,
2980 (double) ic->duration / AV_TIME_BASE,
2981 (int64_t)ic->bit_rate / 1000);
2985 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2987 AVCodecContext *avctx = st->internal->avctx;
2989 #define FAIL(errmsg) do { \
2991 *errmsg_ptr = errmsg; \
2995 if ( avctx->codec_id == AV_CODEC_ID_NONE
2996 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2997 FAIL("unknown codec");
2998 switch (avctx->codec_type) {
2999 case AVMEDIA_TYPE_AUDIO:
3000 if (!avctx->frame_size && determinable_frame_size(avctx))
3001 FAIL("unspecified frame size");
3002 if (st->info->found_decoder >= 0 &&
3003 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
3004 FAIL("unspecified sample format");
3005 if (!avctx->sample_rate)
3006 FAIL("unspecified sample rate");
3007 if (!avctx->channels)
3008 FAIL("unspecified number of channels");
3009 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3010 FAIL("no decodable DTS frames");
3012 case AVMEDIA_TYPE_VIDEO:
3014 FAIL("unspecified size");
3015 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3016 FAIL("unspecified pixel format");
3017 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3018 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3019 FAIL("no frame in rv30/40 and no sar");
3021 case AVMEDIA_TYPE_SUBTITLE:
3022 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3023 FAIL("unspecified size");
3025 case AVMEDIA_TYPE_DATA:
3026 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3032 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3033 static int try_decode_frame(AVFormatContext *s, AVStream *st,
3034 const AVPacket *avpkt, AVDictionary **options)
3036 AVCodecContext *avctx = st->internal->avctx;
3037 const AVCodec *codec;
3038 int got_picture = 1, ret = 0;
3039 AVFrame *frame = av_frame_alloc();
3040 AVSubtitle subtitle;
3041 AVPacket pkt = *avpkt;
3042 int do_skip_frame = 0;
3043 enum AVDiscard skip_frame;
3046 return AVERROR(ENOMEM);
3048 if (!avcodec_is_open(avctx) &&
3049 st->info->found_decoder <= 0 &&
3050 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3051 AVDictionary *thread_opt = NULL;
3053 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3056 st->info->found_decoder = -st->codecpar->codec_id;
3061 /* Force thread count to 1 since the H.264 decoder will not extract
3062 * SPS and PPS to extradata during multi-threaded decoding. */
3063 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3064 if (s->codec_whitelist)
3065 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3066 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3068 av_dict_free(&thread_opt);
3070 st->info->found_decoder = -avctx->codec_id;
3073 st->info->found_decoder = 1;
3074 } else if (!st->info->found_decoder)
3075 st->info->found_decoder = 1;
3077 if (st->info->found_decoder < 0) {
3082 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3084 skip_frame = avctx->skip_frame;
3085 avctx->skip_frame = AVDISCARD_ALL;
3088 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3090 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3091 (!st->codec_info_nb_frames &&
3092 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3094 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3095 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3096 ret = avcodec_send_packet(avctx, &pkt);
3097 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3101 ret = avcodec_receive_frame(avctx, frame);
3104 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3106 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3107 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3108 &got_picture, &pkt);
3114 st->nb_decoded_frames++;
3119 if (!pkt.data && !got_picture)
3123 if (do_skip_frame) {
3124 avctx->skip_frame = skip_frame;
3127 av_frame_free(&frame);
3131 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3133 while (tags->id != AV_CODEC_ID_NONE) {
3141 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3144 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3145 if (tag == tags[i].tag)
3147 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3148 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3150 return AV_CODEC_ID_NONE;
3153 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3155 if (bps <= 0 || bps > 64)
3156 return AV_CODEC_ID_NONE;
3161 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3163 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3165 return AV_CODEC_ID_NONE;
3170 if (sflags & (1 << (bps - 1))) {
3173 return AV_CODEC_ID_PCM_S8;
3175 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3177 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3179 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3181 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3183 return AV_CODEC_ID_NONE;
3188 return AV_CODEC_ID_PCM_U8;
3190 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3192 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3194 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3196 return AV_CODEC_ID_NONE;
3202 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3205 if (!av_codec_get_tag2(tags, id, &tag))
3210 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3214 for (i = 0; tags && tags[i]; i++) {
3215 const AVCodecTag *codec_tags = tags[i];
3216 while (codec_tags->id != AV_CODEC_ID_NONE) {
3217 if (codec_tags->id == id) {
3218 *tag = codec_tags->tag;
3227 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3230 for (i = 0; tags && tags[i]; i++) {
3231 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3232 if (id != AV_CODEC_ID_NONE)
3235 return AV_CODEC_ID_NONE;
3238 static void compute_chapters_end(AVFormatContext *s)
3241 int64_t max_time = 0;
3243 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3244 max_time = s->duration +
3245 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3247 for (i = 0; i < s->nb_chapters; i++)
3248 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3249 AVChapter *ch = s->chapters[i];
3250 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3254 for (j = 0; j < s->nb_chapters; j++) {
3255 AVChapter *ch1 = s->chapters[j];
3256 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3258 if (j != i && next_start > ch->start && next_start < end)
3261 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3265 static int get_std_framerate(int i)
3268 return (i + 1) * 1001;
3272 return (i + 31) * 1001 * 12;
3276 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3280 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3283 /* Is the time base unreliable?
3284 * This is a heuristic to balance between quick acceptance of the values in
3285 * the headers vs. some extra checks.
3286 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3287 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3288 * And there are "variable" fps files this needs to detect as well. */
3289 static int tb_unreliable(AVCodecContext *c)
3291 if (c->time_base.den >= 101LL * c->time_base.num ||
3292 c->time_base.den < 5LL * c->time_base.num ||
3293 // c->codec_tag == AV_RL32("DIVX") ||
3294 // c->codec_tag == AV_RL32("XVID") ||
3295 c->codec_tag == AV_RL32("mp4v") ||
3296 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3297 c->codec_id == AV_CODEC_ID_GIF ||
3298 c->codec_id == AV_CODEC_ID_HEVC ||
3299 c->codec_id == AV_CODEC_ID_H264)
3304 int ff_alloc_extradata(AVCodecParameters *par, int size)
3306 av_freep(&par->extradata);
3307 par->extradata_size = 0;
3309 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3310 return AVERROR(EINVAL);
3312 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3313 if (!par->extradata)
3314 return AVERROR(ENOMEM);
3316 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3317 par->extradata_size = size;
3322 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3324 int ret = ff_alloc_extradata(par, size);
3327 ret = avio_read(pb, par->extradata, size);
3329 av_freep(&par->extradata);
3330 par->extradata_size = 0;
3331 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3332 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3338 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3341 int64_t last = st->info->last_dts;
3343 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3344 && ts - (uint64_t)last < INT64_MAX) {
3345 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3346 int64_t duration = ts - last;
3348 if (!st->info->duration_error)
3349 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3350 if (!st->info->duration_error)
3351 return AVERROR(ENOMEM);
3353 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3354 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3355 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3356 if (st->info->duration_error[0][1][i] < 1e10) {
3357 int framerate = get_std_framerate(i);
3358 double sdts = dts*framerate/(1001*12);
3359 for (j= 0; j<2; j++) {
3360 int64_t ticks = llrint(sdts+j*0.5);
3361 double error= sdts - ticks + j*0.5;
3362 st->info->duration_error[j][0][i] += error;
3363 st->info->duration_error[j][1][i] += error*error;
3367 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3368 st->info->duration_count++;
3369 st->info->rfps_duration_sum += duration;
3372 if (st->info->duration_count % 10 == 0) {
3373 int n = st->info->duration_count;
3374 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3375 if (st->info->duration_error[0][1][i] < 1e10) {
3376 double a0 = st->info->duration_error[0][0][i] / n;
3377 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3378 double a1 = st->info->duration_error[1][0][i] / n;
3379 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3380 if (error0 > 0.04 && error1 > 0.04) {
3381 st->info->duration_error[0][1][i] = 2e10;
3382 st->info->duration_error[1][1][i] = 2e10;
3388 // ignore the first 4 values, they might have some random jitter
3389 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3390 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3392 if (ts != AV_NOPTS_VALUE)
3393 st->info->last_dts = ts;
3398 void ff_rfps_calculate(AVFormatContext *ic)
3402 for (i = 0; i < ic->nb_streams; i++) {
3403 AVStream *st = ic->streams[i];
3405 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3407 // the check for tb_unreliable() is not completely correct, since this is not about handling
3408 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3409 // ipmovie.c produces.
3410 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)
3411 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);
3412 if (st->info->duration_count>1 && !st->r_frame_rate.num
3413 && tb_unreliable(st->internal->avctx)) {
3415 double best_error= 0.01;
3416 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3418 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3421 if (st->info->codec_info_duration &&
3422 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3424 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3427 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3430 for (k= 0; k<2; k++) {
3431 int n = st->info->duration_count;
3432 double a= st->info->duration_error[k][0][j] / n;
3433 double error= st->info->duration_error[k][1][j]/n - a*a;
3435 if (error < best_error && best_error> 0.000000001) {
3437 num = get_std_framerate(j);
3440 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3443 // do not increase frame rate by more than 1 % in order to match a standard rate.
3444 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3445 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3447 if ( !st->avg_frame_rate.num
3448 && st->r_frame_rate.num && st->info->rfps_duration_sum
3449 && st->info->codec_info_duration <= 0
3450 && st->info->duration_count > 2
3451 && 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
3453 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3454 st->avg_frame_rate = st->r_frame_rate;
3457 av_freep(&st->info->duration_error);
3458 st->info->last_dts = AV_NOPTS_VALUE;
3459 st->info->duration_count = 0;
3460 st->info->rfps_duration_sum = 0;
3464 static int extract_extradata_check(AVStream *st)
3466 const AVBitStreamFilter *f;
3468 f = av_bsf_get_by_name("extract_extradata");
3473 const enum AVCodecID *ids;
3474 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3475 if (*ids == st->codecpar->codec_id)
3482 static int extract_extradata_init(AVStream *st)
3484 AVStreamInternal *sti = st->internal;
3485 const AVBitStreamFilter *f;
3488 f = av_bsf_get_by_name("extract_extradata");
3492 /* check that the codec id is supported */
3493 ret = extract_extradata_check(st);
3497 sti->extract_extradata.pkt = av_packet_alloc();
3498 if (!sti->extract_extradata.pkt)
3499 return AVERROR(ENOMEM);
3501 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3505 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3510 sti->extract_extradata.bsf->time_base_in = st->time_base;
3512 ret = av_bsf_init(sti->extract_extradata.bsf);
3517 sti->extract_extradata.inited = 1;
3521 av_bsf_free(&sti->extract_extradata.bsf);
3522 av_packet_free(&sti->extract_extradata.pkt);
3526 static int extract_extradata(AVStream *st, const AVPacket *pkt)
3528 AVStreamInternal *sti = st->internal;
3532 if (!sti->extract_extradata.inited) {
3533 ret = extract_extradata_init(st);
3538 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3541 pkt_ref = sti->extract_extradata.pkt;
3542 ret = av_packet_ref(pkt_ref, pkt);
3546 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3548 av_packet_unref(pkt_ref);
3552 while (ret >= 0 && !sti->avctx->extradata) {
3556 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3558 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3563 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3567 av_assert0(!sti->avctx->extradata);
3568 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3569 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3570 if (!sti->avctx->extradata) {
3571 av_packet_unref(pkt_ref);
3572 return AVERROR(ENOMEM);
3574 memcpy(sti->avctx->extradata, extradata, extradata_size);
3575 sti->avctx->extradata_size = extradata_size;
3577 av_packet_unref(pkt_ref);
3583 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3585 int i, count = 0, ret = 0, j;
3588 AVCodecContext *avctx;
3590 int64_t old_offset = avio_tell(ic->pb);
3591 // new streams might appear, no options for those
3592 int orig_nb_streams = ic->nb_streams;
3594 int64_t max_analyze_duration = ic->max_analyze_duration;
3595 int64_t max_stream_analyze_duration;
3596 int64_t max_subtitle_analyze_duration;
3597 int64_t probesize = ic->probesize;
3598 int eof_reached = 0;
3599 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3601 flush_codecs = probesize > 0;
3603 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3605 max_stream_analyze_duration = max_analyze_duration;
3606 max_subtitle_analyze_duration = max_analyze_duration;
3607 if (!max_analyze_duration) {
3608 max_stream_analyze_duration =
3609 max_analyze_duration = 5*AV_TIME_BASE;
3610 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3611 if (!strcmp(ic->iformat->name, "flv"))
3612 max_stream_analyze_duration = 90*AV_TIME_BASE;
3613 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3614 max_stream_analyze_duration = 7*AV_TIME_BASE;
3618 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3619 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3621 for (i = 0; i < ic->nb_streams; i++) {
3622 const AVCodec *codec;
3623 AVDictionary *thread_opt = NULL;
3624 st = ic->streams[i];
3625 avctx = st->internal->avctx;
3627 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3628 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3629 /* if (!st->time_base.num)
3631 if (!avctx->time_base.num)
3632 avctx->time_base = st->time_base;
3635 /* check if the caller has overridden the codec id */
3636 #if FF_API_LAVF_AVCTX
3637 FF_DISABLE_DEPRECATION_WARNINGS
3638 if (st->codec->codec_id != st->internal->orig_codec_id) {
3639 st->codecpar->codec_id = st->codec->codec_id;
3640 st->codecpar->codec_type = st->codec->codec_type;
3641 st->internal->orig_codec_id = st->codec->codec_id;
3643 FF_ENABLE_DEPRECATION_WARNINGS
3645 // only for the split stuff
3646 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3647 st->parser = av_parser_init(st->codecpar->codec_id);
3649 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3650 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3651 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3652 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3654 } else if (st->need_parsing) {
3655 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3656 "%s, packets or times may be invalid.\n",
3657 avcodec_get_name(st->codecpar->codec_id));
3661 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3662 st->internal->orig_codec_id = st->codecpar->codec_id;
3664 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3666 goto find_stream_info_err;
3667 if (st->request_probe <= 0)
3668 st->internal->avctx_inited = 1;
3670 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3672 /* Force thread count to 1 since the H.264 decoder will not extract
3673 * SPS and PPS to extradata during multi-threaded decoding. */
3674 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3676 if (ic->codec_whitelist)
3677 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3679 /* Ensure that subtitle_header is properly set. */
3680 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3681 && codec && !avctx->codec) {
3682 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3683 av_log(ic, AV_LOG_WARNING,
3684 "Failed to open codec in %s\n",__FUNCTION__);
3687 // Try to just open decoders, in case this is enough to get parameters.
3688 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3689 if (codec && !avctx->codec)
3690 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3691 av_log(ic, AV_LOG_WARNING,
3692 "Failed to open codec in %s\n",__FUNCTION__);
3695 av_dict_free(&thread_opt);
3698 for (i = 0; i < ic->nb_streams; i++) {
3699 #if FF_API_R_FRAME_RATE
3700 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3702 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3703 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3708 const AVPacket *pkt;
3709 int analyzed_all_streams;
3710 if (ff_check_interrupt(&ic->interrupt_callback)) {
3712 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3716 /* check if one codec still needs to be handled */
3717 for (i = 0; i < ic->nb_streams; i++) {
3718 int fps_analyze_framecount = 20;
3721 st = ic->streams[i];
3722 if (!has_codec_parameters(st, NULL))
3724 /* If the timebase is coarse (like the usual millisecond precision
3725 * of mkv), we need to analyze more frames to reliably arrive at
3726 * the correct fps. */
3727 if (av_q2d(st->time_base) > 0.0005)
3728 fps_analyze_framecount *= 2;
3729 if (!tb_unreliable(st->internal->avctx))
3730 fps_analyze_framecount = 0;
3731 if (ic->fps_probe_size >= 0)
3732 fps_analyze_framecount = ic->fps_probe_size;
3733 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3734 fps_analyze_framecount = 0;
3735 /* variable fps and no guess at the real fps */
3736 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3737 st->info->codec_info_duration_fields/2 :
3738 st->info->duration_count;
3739 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3740 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3741 if (count < fps_analyze_framecount)
3744 // Look at the first 3 frames if there is evidence of frame delay
3745 // but the decoder delay is not set.
3746 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3748 if (!st->internal->avctx->extradata &&
3749 (!st->internal->extract_extradata.inited ||
3750 st->internal->extract_extradata.bsf) &&
3751 extract_extradata_check(st))
3753 if (st->first_dts == AV_NOPTS_VALUE &&
3754 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3755 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3756 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3757 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3760 analyzed_all_streams = 0;
3761 if (!missing_streams || !*missing_streams)
3762 if (i == ic->nb_streams) {
3763 analyzed_all_streams = 1;
3764 /* NOTE: If the format has no header, then we need to read some
3765 * packets to get most of the streams, so we cannot stop here. */
3766 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3767 /* If we found the info for all the codecs, we can stop. */
3769 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3774 /* We did not get all the codec info, but we read too much data. */
3775 if (read_size >= probesize) {
3777 av_log(ic, AV_LOG_DEBUG,
3778 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3779 for (i = 0; i < ic->nb_streams; i++)
3780 if (!ic->streams[i]->r_frame_rate.num &&
3781 ic->streams[i]->info->duration_count <= 1 &&
3782 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3783 strcmp(ic->iformat->name, "image2"))
3784 av_log(ic, AV_LOG_WARNING,
3785 "Stream #%d: not enough frames to estimate rate; "
3786 "consider increasing probesize\n", i);
3790 /* NOTE: A new stream can be added there if no header in file
3791 * (AVFMTCTX_NOHEADER). */
3792 ret = read_frame_internal(ic, &pkt1);
3793 if (ret == AVERROR(EAGAIN))
3802 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3803 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3804 &ic->internal->packet_buffer_end,
3807 goto unref_then_goto_end;
3809 pkt = &ic->internal->packet_buffer_end->pkt;
3814 st = ic->streams[pkt->stream_index];
3815 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3816 read_size += pkt->size;
3818 avctx = st->internal->avctx;
3819 if (!st->internal->avctx_inited) {
3820 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3822 goto unref_then_goto_end;
3823 st->internal->avctx_inited = 1;
3826 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3827 /* check for non-increasing dts */
3828 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3829 st->info->fps_last_dts >= pkt->dts) {
3830 av_log(ic, AV_LOG_DEBUG,
3831 "Non-increasing DTS in stream %d: packet %d with DTS "
3832 "%"PRId64", packet %d with DTS %"PRId64"\n",
3833 st->index, st->info->fps_last_dts_idx,
3834 st->info->fps_last_dts, st->codec_info_nb_frames,
3836 st->info->fps_first_dts =
3837 st->info->fps_last_dts = AV_NOPTS_VALUE;
3839 /* Check for a discontinuity in dts. If the difference in dts
3840 * is more than 1000 times the average packet duration in the
3841 * sequence, we treat it as a discontinuity. */
3842 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3843 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3844 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3845 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3846 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3847 av_log(ic, AV_LOG_WARNING,
3848 "DTS discontinuity in stream %d: packet %d with DTS "
3849 "%"PRId64", packet %d with DTS %"PRId64"\n",
3850 st->index, st->info->fps_last_dts_idx,
3851 st->info->fps_last_dts, st->codec_info_nb_frames,
3853 st->info->fps_first_dts =
3854 st->info->fps_last_dts = AV_NOPTS_VALUE;
3857 /* update stored dts values */
3858 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3859 st->info->fps_first_dts = pkt->dts;
3860 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3862 st->info->fps_last_dts = pkt->dts;
3863 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3865 if (st->codec_info_nb_frames>1) {
3869 if (st->time_base.den > 0)
3870 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3871 if (st->avg_frame_rate.num > 0)
3872 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3875 && st->codec_info_nb_frames>30
3876 && st->info->fps_first_dts != AV_NOPTS_VALUE
3877 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3878 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3880 if (analyzed_all_streams) limit = max_analyze_duration;
3881 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3882 else limit = max_stream_analyze_duration;
3885 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3887 t, pkt->stream_index);
3888 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3889 av_packet_unref(&pkt1);
3892 if (pkt->duration) {
3893 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3894 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3896 st->info->codec_info_duration += pkt->duration;
3897 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3900 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3901 #if FF_API_R_FRAME_RATE
3902 ff_rfps_add_frame(ic, st, pkt->dts);
3904 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3905 st->info->frame_delay_evidence = 1;
3907 if (!st->internal->avctx->extradata) {
3908 ret = extract_extradata(st, pkt);
3910 goto unref_then_goto_end;
3913 /* If still no information, we try to open the codec and to
3914 * decompress the frame. We try to avoid that in most cases as
3915 * it takes longer and uses more memory. For MPEG-4, we need to
3916 * decompress for QuickTime.
3918 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3919 * least one frame of codec data, this makes sure the codec initializes
3920 * the channel configuration and does not only trust the values from
3922 try_decode_frame(ic, st, pkt,
3923 (options && i < orig_nb_streams) ? &options[i] : NULL);
3925 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3926 av_packet_unref(&pkt1);
3928 st->codec_info_nb_frames++;
3934 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3935 st = ic->streams[stream_index];
3936 avctx = st->internal->avctx;
3937 if (!has_codec_parameters(st, NULL)) {
3938 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3939 if (codec && !avctx->codec) {
3940 AVDictionary *opts = NULL;
3941 if (ic->codec_whitelist)
3942 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3943 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3944 av_log(ic, AV_LOG_WARNING,
3945 "Failed to open codec in %s\n",__FUNCTION__);
3946 av_dict_free(&opts);
3950 // EOF already reached while reading the stream above.
3951 // So continue with reoordering DTS with whatever delay we have.
3952 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3953 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3959 AVPacket empty_pkt = { 0 };
3961 av_init_packet(&empty_pkt);
3963 for (i = 0; i < ic->nb_streams; i++) {
3965 st = ic->streams[i];
3967 /* flush the decoders */
3968 if (st->info->found_decoder == 1) {
3970 err = try_decode_frame(ic, st, &empty_pkt,
3971 (options && i < orig_nb_streams)
3972 ? &options[i] : NULL);
3973 } while (err > 0 && !has_codec_parameters(st, NULL));
3976 av_log(ic, AV_LOG_INFO,
3977 "decoding for stream %d failed\n", st->index);
3983 ff_rfps_calculate(ic);
3985 for (i = 0; i < ic->nb_streams; i++) {
3986 st = ic->streams[i];
3987 avctx = st->internal->avctx;
3988 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3989 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3990 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3991 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3992 avctx->codec_tag= tag;
3995 /* estimate average framerate if not set by demuxer */
3996 if (st->info->codec_info_duration_fields &&
3997 !st->avg_frame_rate.num &&
3998 st->info->codec_info_duration) {
4000 double best_error = 0.01;
4001 AVRational codec_frame_rate = avctx->framerate;
4003 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4004 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4005 st->info->codec_info_duration < 0)
4007 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4008 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4009 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4011 /* Round guessed framerate to a "standard" framerate if it's
4012 * within 1% of the original estimate. */
4013 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4014 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4015 double error = fabs(av_q2d(st->avg_frame_rate) /
4016 av_q2d(std_fps) - 1);
4018 if (error < best_error) {
4020 best_fps = std_fps.num;
4023 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4024 error = fabs(av_q2d(codec_frame_rate) /
4025 av_q2d(std_fps) - 1);
4026 if (error < best_error) {
4028 best_fps = std_fps.num;
4033 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4034 best_fps, 12 * 1001, INT_MAX);
4037 if (!st->r_frame_rate.num) {
4038 if ( avctx->time_base.den * (int64_t) st->time_base.num
4039 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4040 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4041 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4043 st->r_frame_rate.num = st->time_base.den;
4044 st->r_frame_rate.den = st->time_base.num;
4047 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4048 AVRational hw_ratio = { avctx->height, avctx->width };
4049 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4052 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4053 if (!avctx->bits_per_coded_sample)
4054 avctx->bits_per_coded_sample =
4055 av_get_bits_per_sample(avctx->codec_id);
4056 // set stream disposition based on audio service type
4057 switch (avctx->audio_service_type) {
4058 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4059 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4061 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4062 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4064 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4065 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4067 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4068 st->disposition = AV_DISPOSITION_COMMENT;
4070 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4071 st->disposition = AV_DISPOSITION_KARAOKE;
4078 estimate_timings(ic, old_offset);
4080 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4082 if (ret >= 0 && ic->nb_streams)
4083 /* We could not have all the codec parameters before EOF. */
4085 for (i = 0; i < ic->nb_streams; i++) {
4087 st = ic->streams[i];
4089 /* if no packet was ever seen, update context now for has_codec_parameters */
4090 if (!st->internal->avctx_inited) {
4091 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4092 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4093 st->codecpar->format = st->internal->avctx->sample_fmt;
4094 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4096 goto find_stream_info_err;
4098 if (!has_codec_parameters(st, &errmsg)) {
4100 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4101 av_log(ic, AV_LOG_WARNING,
4102 "Could not find codec parameters for stream %d (%s): %s\n"
4103 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4110 compute_chapters_end(ic);
4112 /* update the stream parameters from the internal codec contexts */
4113 for (i = 0; i < ic->nb_streams; i++) {
4114 st = ic->streams[i];
4116 if (st->internal->avctx_inited) {
4117 int orig_w = st->codecpar->width;
4118 int orig_h = st->codecpar->height;
4119 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4121 goto find_stream_info_err;
4123 // The decoder might reduce the video size by the lowres factor.
4124 if (st->internal->avctx->lowres && orig_w) {
4125 st->codecpar->width = orig_w;
4126 st->codecpar->height = orig_h;
4131 #if FF_API_LAVF_AVCTX
4132 FF_DISABLE_DEPRECATION_WARNINGS
4133 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4135 goto find_stream_info_err;
4138 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4139 // by the lowres factor.
4140 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4141 st->codec->lowres = st->internal->avctx->lowres;
4142 st->codec->width = st->internal->avctx->width;
4143 st->codec->height = st->internal->avctx->height;
4147 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4148 st->codec->time_base = st->internal->avctx->time_base;
4149 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4151 st->codec->framerate = st->avg_frame_rate;
4153 if (st->internal->avctx->subtitle_header) {
4154 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4155 if (!st->codec->subtitle_header)
4156 goto find_stream_info_err;
4157 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4158 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4159 st->codec->subtitle_header_size);
4162 // Fields unavailable in AVCodecParameters
4163 st->codec->coded_width = st->internal->avctx->coded_width;
4164 st->codec->coded_height = st->internal->avctx->coded_height;
4165 st->codec->properties = st->internal->avctx->properties;
4166 FF_ENABLE_DEPRECATION_WARNINGS
4169 st->internal->avctx_inited = 0;
4172 find_stream_info_err:
4173 for (i = 0; i < ic->nb_streams; i++) {
4174 st = ic->streams[i];
4176 av_freep(&st->info->duration_error);
4177 avcodec_close(ic->streams[i]->internal->avctx);
4178 av_freep(&ic->streams[i]->info);
4179 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4180 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4183 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4184 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4187 unref_then_goto_end:
4188 av_packet_unref(&pkt1);
4189 goto find_stream_info_err;
4192 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4196 for (i = 0; i < ic->nb_programs; i++) {
4197 if (ic->programs[i] == last) {
4201 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4202 if (ic->programs[i]->stream_index[j] == s)
4203 return ic->programs[i];
4209 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4210 int wanted_stream_nb, int related_stream,
4211 AVCodec **decoder_ret, int flags)
4213 int i, nb_streams = ic->nb_streams;
4214 int ret = AVERROR_STREAM_NOT_FOUND;
4215 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4216 int count, multiframe, disposition;
4217 int64_t best_bitrate = -1;
4219 unsigned *program = NULL;
4220 const AVCodec *decoder = NULL, *best_decoder = NULL;
4222 if (related_stream >= 0 && wanted_stream_nb < 0) {
4223 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4225 program = p->stream_index;
4226 nb_streams = p->nb_stream_indexes;
4229 for (i = 0; i < nb_streams; i++) {
4230 int real_stream_index = program ? program[i] : i;
4231 AVStream *st = ic->streams[real_stream_index];
4232 AVCodecParameters *par = st->codecpar;
4233 if (par->codec_type != type)
4235 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4237 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4240 decoder = find_decoder(ic, st, par->codec_id);
4243 ret = AVERROR_DECODER_NOT_FOUND;
4247 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4248 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4249 count = st->codec_info_nb_frames;
4250 bitrate = par->bit_rate;
4251 multiframe = FFMIN(5, count);
4252 if ((best_disposition > disposition) ||
4253 (best_disposition == disposition && best_multiframe > multiframe) ||
4254 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4255 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4257 best_disposition = disposition;
4259 best_bitrate = bitrate;
4260 best_multiframe = multiframe;
4261 ret = real_stream_index;
4262 best_decoder = decoder;
4263 if (program && i == nb_streams - 1 && ret < 0) {
4265 nb_streams = ic->nb_streams;
4266 /* no related stream found, try again with everything */
4271 *decoder_ret = (AVCodec*)best_decoder;
4275 /*******************************************************/
4277 int av_read_play(AVFormatContext *s)
4279 if (s->iformat->read_play)
4280 return s->iformat->read_play(s);
4282 return avio_pause(s->pb, 0);
4283 return AVERROR(ENOSYS);
4286 int av_read_pause(AVFormatContext *s)
4288 if (s->iformat->read_pause)
4289 return s->iformat->read_pause(s);
4291 return avio_pause(s->pb, 1);
4292 return AVERROR(ENOSYS);
4295 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4300 dst->time_base = src->time_base;
4301 dst->nb_frames = src->nb_frames;
4302 dst->disposition = src->disposition;
4303 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4304 dst->avg_frame_rate = src->avg_frame_rate;
4305 dst->r_frame_rate = src->r_frame_rate;
4307 av_dict_free(&dst->metadata);
4308 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4312 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4316 /* Free existing side data*/
4317 for (i = 0; i < dst->nb_side_data; i++)
4318 av_free(dst->side_data[i].data);
4319 av_freep(&dst->side_data);
4320 dst->nb_side_data = 0;
4322 /* Copy side data if present */
4323 if (src->nb_side_data) {
4324 dst->side_data = av_mallocz_array(src->nb_side_data,
4325 sizeof(AVPacketSideData));
4326 if (!dst->side_data)
4327 return AVERROR(ENOMEM);
4328 dst->nb_side_data = src->nb_side_data;
4330 for (i = 0; i < src->nb_side_data; i++) {
4331 uint8_t *data = av_memdup(src->side_data[i].data,
4332 src->side_data[i].size);
4334 return AVERROR(ENOMEM);
4335 dst->side_data[i].type = src->side_data[i].type;
4336 dst->side_data[i].size = src->side_data[i].size;
4337 dst->side_data[i].data = data;
4341 #if FF_API_LAVF_FFSERVER
4342 FF_DISABLE_DEPRECATION_WARNINGS
4343 av_freep(&dst->recommended_encoder_configuration);
4344 if (src->recommended_encoder_configuration) {
4345 const char *conf_str = src->recommended_encoder_configuration;
4346 dst->recommended_encoder_configuration = av_strdup(conf_str);
4347 if (!dst->recommended_encoder_configuration)
4348 return AVERROR(ENOMEM);
4350 FF_ENABLE_DEPRECATION_WARNINGS
4356 static void free_stream(AVStream **pst)
4358 AVStream *st = *pst;
4364 for (i = 0; i < st->nb_side_data; i++)
4365 av_freep(&st->side_data[i].data);
4366 av_freep(&st->side_data);
4369 av_parser_close(st->parser);
4371 if (st->attached_pic.data)
4372 av_packet_unref(&st->attached_pic);
4375 avcodec_free_context(&st->internal->avctx);
4376 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4377 av_bsf_free(&st->internal->bsfcs[i]);
4378 av_freep(&st->internal->bsfcs);
4380 av_freep(&st->internal->priv_pts);
4381 av_bsf_free(&st->internal->extract_extradata.bsf);
4382 av_packet_free(&st->internal->extract_extradata.pkt);
4384 av_freep(&st->internal);
4386 av_dict_free(&st->metadata);
4387 avcodec_parameters_free(&st->codecpar);
4388 av_freep(&st->probe_data.buf);
4389 av_freep(&st->index_entries);
4390 #if FF_API_LAVF_AVCTX
4391 FF_DISABLE_DEPRECATION_WARNINGS
4392 avcodec_free_context(&st->codec);
4393 FF_ENABLE_DEPRECATION_WARNINGS
4395 av_freep(&st->priv_data);
4397 av_freep(&st->info->duration_error);
4398 av_freep(&st->info);
4399 #if FF_API_LAVF_FFSERVER
4400 FF_DISABLE_DEPRECATION_WARNINGS
4401 av_freep(&st->recommended_encoder_configuration);
4402 FF_ENABLE_DEPRECATION_WARNINGS
4408 void ff_free_stream(AVFormatContext *s, AVStream *st)
4410 av_assert0(s->nb_streams>0);
4411 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4413 free_stream(&s->streams[ --s->nb_streams ]);
4416 void avformat_free_context(AVFormatContext *s)
4424 if (s->iformat && s->iformat->priv_class && s->priv_data)
4425 av_opt_free(s->priv_data);
4426 if (s->oformat && s->oformat->priv_class && s->priv_data)
4427 av_opt_free(s->priv_data);
4429 for (i = s->nb_streams - 1; i >= 0; i--)
4430 ff_free_stream(s, s->streams[i]);
4433 for (i = s->nb_programs - 1; i >= 0; i--) {
4434 av_dict_free(&s->programs[i]->metadata);
4435 av_freep(&s->programs[i]->stream_index);
4436 av_freep(&s->programs[i]);
4438 av_freep(&s->programs);
4439 av_freep(&s->priv_data);
4440 while (s->nb_chapters--) {
4441 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4442 av_freep(&s->chapters[s->nb_chapters]);
4444 av_freep(&s->chapters);
4445 av_dict_free(&s->metadata);
4446 av_dict_free(&s->internal->id3v2_meta);
4447 av_freep(&s->streams);
4448 flush_packet_queue(s);
4449 av_freep(&s->internal);
4454 void avformat_close_input(AVFormatContext **ps)
4465 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4466 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4469 flush_packet_queue(s);
4472 if (s->iformat->read_close)
4473 s->iformat->read_close(s);
4475 avformat_free_context(s);
4482 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4488 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4489 if (s->max_streams < INT_MAX/sizeof(*streams))
4490 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);
4493 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4496 s->streams = streams;
4498 st = av_mallocz(sizeof(AVStream));
4501 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4505 st->info->last_dts = AV_NOPTS_VALUE;
4507 #if FF_API_LAVF_AVCTX
4508 FF_DISABLE_DEPRECATION_WARNINGS
4509 st->codec = avcodec_alloc_context3(c);
4515 FF_ENABLE_DEPRECATION_WARNINGS
4518 st->internal = av_mallocz(sizeof(*st->internal));
4522 st->codecpar = avcodec_parameters_alloc();
4526 st->internal->avctx = avcodec_alloc_context3(NULL);
4527 if (!st->internal->avctx)
4531 #if FF_API_LAVF_AVCTX
4532 FF_DISABLE_DEPRECATION_WARNINGS
4533 /* no default bitrate if decoding */
4534 st->codec->bit_rate = 0;
4535 FF_ENABLE_DEPRECATION_WARNINGS
4538 /* default pts setting is MPEG-like */
4539 avpriv_set_pts_info(st, 33, 1, 90000);
4540 /* we set the current DTS to 0 so that formats without any timestamps
4541 * but durations get some timestamps, formats with some unknown
4542 * timestamps have their first few packets buffered and the
4543 * timestamps corrected before they are returned to the user */
4544 st->cur_dts = RELATIVE_TS_BASE;
4546 st->cur_dts = AV_NOPTS_VALUE;
4549 st->index = s->nb_streams;
4550 st->start_time = AV_NOPTS_VALUE;
4551 st->duration = AV_NOPTS_VALUE;
4552 st->first_dts = AV_NOPTS_VALUE;
4553 st->probe_packets = MAX_PROBE_PACKETS;
4554 st->pts_wrap_reference = AV_NOPTS_VALUE;
4555 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4557 st->last_IP_pts = AV_NOPTS_VALUE;
4558 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4559 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4560 st->pts_buffer[i] = AV_NOPTS_VALUE;
4562 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4564 #if FF_API_R_FRAME_RATE
4565 st->info->last_dts = AV_NOPTS_VALUE;
4567 st->info->fps_first_dts = AV_NOPTS_VALUE;
4568 st->info->fps_last_dts = AV_NOPTS_VALUE;
4570 st->inject_global_side_data = s->internal->inject_global_side_data;
4572 st->internal->need_context_update = 1;
4574 s->streams[s->nb_streams++] = st;
4581 AVProgram *av_new_program(AVFormatContext *ac, int id)
4583 AVProgram *program = NULL;
4586 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4588 for (i = 0; i < ac->nb_programs; i++)
4589 if (ac->programs[i]->id == id)
4590 program = ac->programs[i];
4593 program = av_mallocz(sizeof(AVProgram));
4596 dynarray_add(&ac->programs, &ac->nb_programs, program);
4597 program->discard = AVDISCARD_NONE;
4598 program->pmt_version = -1;
4601 program->pts_wrap_reference = AV_NOPTS_VALUE;
4602 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4604 program->start_time =
4605 program->end_time = AV_NOPTS_VALUE;
4610 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4611 int64_t start, int64_t end, const char *title)
4613 AVChapter *chapter = NULL;
4616 if (end != AV_NOPTS_VALUE && start > end) {
4617 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4621 for (i = 0; i < s->nb_chapters; i++)
4622 if (s->chapters[i]->id == id)
4623 chapter = s->chapters[i];
4626 chapter = av_mallocz(sizeof(AVChapter));
4629 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4631 av_dict_set(&chapter->metadata, "title", title, 0);
4633 chapter->time_base = time_base;
4634 chapter->start = start;
4640 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4643 AVProgram *program = NULL;
4646 if (idx >= ac->nb_streams) {
4647 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4651 for (i = 0; i < ac->nb_programs; i++) {
4652 if (ac->programs[i]->id != progid)
4654 program = ac->programs[i];
4655 for (j = 0; j < program->nb_stream_indexes; j++)
4656 if (program->stream_index[j] == idx)
4659 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4662 program->stream_index = tmp;
4663 program->stream_index[program->nb_stream_indexes++] = idx;
4668 uint64_t ff_ntp_time(void)
4670 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4673 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4675 uint64_t ntp_ts, frac_part, sec;
4678 //current ntp time in seconds and micro seconds
4679 sec = ntp_time_us / 1000000;
4680 usec = ntp_time_us % 1000000;
4682 //encoding in ntp timestamp format
4683 frac_part = usec * 0xFFFFFFFFULL;
4684 frac_part /= 1000000;
4686 if (sec > 0xFFFFFFFFULL)
4687 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4690 ntp_ts |= frac_part;
4695 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4698 char *q, buf1[20], c;
4699 int nd, len, percentd_found;
4711 while (av_isdigit(*p))
4712 nd = nd * 10 + *p++ - '0';
4714 } while (av_isdigit(c));
4720 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4725 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4727 if ((q - buf + len) > buf_size - 1)
4729 memcpy(q, buf1, len);
4737 if ((q - buf) < buf_size - 1)
4741 if (!percentd_found)
4750 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4752 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4755 void av_url_split(char *proto, int proto_size,
4756 char *authorization, int authorization_size,
4757 char *hostname, int hostname_size,
4758 int *port_ptr, char *path, int path_size, const char *url)
4760 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4766 if (authorization_size > 0)
4767 authorization[0] = 0;
4768 if (hostname_size > 0)
4773 /* parse protocol */
4774 if ((p = strchr(url, ':'))) {
4775 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4782 /* no protocol means plain filename */
4783 av_strlcpy(path, url, path_size);
4787 /* separate path from hostname */
4788 ls = strchr(p, '/');
4789 ls2 = strchr(p, '?');
4793 ls = FFMIN(ls, ls2);
4795 av_strlcpy(path, ls, path_size);
4797 ls = &p[strlen(p)]; // XXX
4799 /* the rest is hostname, use that to parse auth/port */
4801 /* authorization (user[:pass]@hostname) */
4803 while ((at = strchr(p, '@')) && at < ls) {
4804 av_strlcpy(authorization, at2,
4805 FFMIN(authorization_size, at + 1 - at2));
4806 p = at + 1; /* skip '@' */
4809 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4811 av_strlcpy(hostname, p + 1,
4812 FFMIN(hostname_size, brk - p));
4813 if (brk[1] == ':' && port_ptr)
4814 *port_ptr = atoi(brk + 2);
4815 } else if ((col = strchr(p, ':')) && col < ls) {
4816 av_strlcpy(hostname, p,
4817 FFMIN(col + 1 - p, hostname_size));
4819 *port_ptr = atoi(col + 1);
4821 av_strlcpy(hostname, p,
4822 FFMIN(ls + 1 - p, hostname_size));
4826 int ff_mkdir_p(const char *path)
4829 char *temp = av_strdup(path);
4833 if (!path || !temp) {
4837 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4839 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4843 for ( ; *pos != '\0'; ++pos) {
4844 if (*pos == '/' || *pos == '\\') {
4847 ret = mkdir(temp, 0755);
4852 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4853 ret = mkdir(temp, 0755);
4860 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4863 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4866 'C', 'D', 'E', 'F' };
4867 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4870 'c', 'd', 'e', 'f' };
4871 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4873 for (i = 0; i < s; i++) {
4874 buff[i * 2] = hex_table[src[i] >> 4];
4875 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4881 int ff_hex_to_data(uint8_t *data, const char *p)
4888 p += strspn(p, SPACE_CHARS);
4891 c = av_toupper((unsigned char) *p++);
4892 if (c >= '0' && c <= '9')
4894 else if (c >= 'A' && c <= 'F')
4909 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4910 unsigned int pts_num, unsigned int pts_den)
4913 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4914 if (new_tb.num != pts_num)
4915 av_log(NULL, AV_LOG_DEBUG,
4916 "st:%d removing common factor %d from timebase\n",
4917 s->index, pts_num / new_tb.num);
4919 av_log(NULL, AV_LOG_WARNING,
4920 "st:%d has too large timebase, reducing\n", s->index);
4922 if (new_tb.num <= 0 || new_tb.den <= 0) {
4923 av_log(NULL, AV_LOG_ERROR,
4924 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4925 new_tb.num, new_tb.den,
4929 s->time_base = new_tb;
4930 #if FF_API_LAVF_AVCTX
4931 FF_DISABLE_DEPRECATION_WARNINGS
4932 s->codec->pkt_timebase = new_tb;
4933 FF_ENABLE_DEPRECATION_WARNINGS
4935 s->internal->avctx->pkt_timebase = new_tb;
4936 s->pts_wrap_bits = pts_wrap_bits;
4939 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4942 const char *ptr = str;
4944 /* Parse key=value pairs. */
4947 char *dest = NULL, *dest_end;
4948 int key_len, dest_len = 0;
4950 /* Skip whitespace and potential commas. */
4951 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4958 if (!(ptr = strchr(key, '=')))
4961 key_len = ptr - key;
4963 callback_get_buf(context, key, key_len, &dest, &dest_len);
4964 dest_end = dest + dest_len - 1;
4968 while (*ptr && *ptr != '\"') {
4972 if (dest && dest < dest_end)
4976 if (dest && dest < dest_end)
4984 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4985 if (dest && dest < dest_end)
4993 int ff_find_stream_index(AVFormatContext *s, int id)
4996 for (i = 0; i < s->nb_streams; i++)
4997 if (s->streams[i]->id == id)
5002 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
5006 unsigned int codec_tag;
5007 if (ofmt->query_codec)
5008 return ofmt->query_codec(codec_id, std_compliance);
5009 else if (ofmt->codec_tag)
5010 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
5011 else if (codec_id == ofmt->video_codec ||
5012 codec_id == ofmt->audio_codec ||
5013 codec_id == ofmt->subtitle_codec ||
5014 codec_id == ofmt->data_codec)
5017 return AVERROR_PATCHWELCOME;
5020 int avformat_network_init(void)
5024 if ((ret = ff_network_init()) < 0)
5026 if ((ret = ff_tls_init()) < 0)
5032 int avformat_network_deinit(void)
5041 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5042 uint64_t channel_layout, int32_t sample_rate,
5043 int32_t width, int32_t height)
5049 return AVERROR(EINVAL);
5052 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5054 if (channel_layout) {
5056 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5060 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5062 if (width || height) {
5064 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5066 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5068 return AVERROR(ENOMEM);
5069 bytestream_put_le32(&data, flags);
5071 bytestream_put_le32(&data, channels);
5073 bytestream_put_le64(&data, channel_layout);
5075 bytestream_put_le32(&data, sample_rate);
5076 if (width || height) {
5077 bytestream_put_le32(&data, width);
5078 bytestream_put_le32(&data, height);
5083 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5085 AVRational undef = {0, 1};
5086 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5087 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5088 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5090 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5091 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5092 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5093 stream_sample_aspect_ratio = undef;
5095 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5096 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5097 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5098 frame_sample_aspect_ratio = undef;
5100 if (stream_sample_aspect_ratio.num)
5101 return stream_sample_aspect_ratio;
5103 return frame_sample_aspect_ratio;
5106 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5108 AVRational fr = st->r_frame_rate;
5109 AVRational codec_fr = st->internal->avctx->framerate;
5110 AVRational avg_fr = st->avg_frame_rate;
5112 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5113 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5118 if (st->internal->avctx->ticks_per_frame > 1) {
5119 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5120 (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))
5128 * Matches a stream specifier (but ignores requested index).
5130 * @param indexptr set to point to the requested stream index if there is one
5132 * @return <0 on error
5133 * 0 if st is NOT a matching stream
5134 * >0 if st is a matching stream
5136 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5137 const char *spec, const char **indexptr, AVProgram **p)
5139 int match = 1; /* Stores if the specifier matches so far. */
5141 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5145 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5146 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5147 enum AVMediaType type;
5151 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5152 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5153 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5154 case 'd': type = AVMEDIA_TYPE_DATA; break;
5155 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5156 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5157 default: av_assert0(0);
5159 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5160 return AVERROR(EINVAL);
5162 #if FF_API_LAVF_AVCTX
5163 FF_DISABLE_DEPRECATION_WARNINGS
5164 if (type != st->codecpar->codec_type
5165 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5167 FF_ENABLE_DEPRECATION_WARNINGS
5169 if (type != st->codecpar->codec_type)
5172 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5174 } else if (*spec == 'p' && *(spec + 1) == ':') {
5179 prog_id = strtol(spec, &endptr, 0);
5180 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5181 if (spec == endptr || (*endptr && *endptr++ != ':'))
5182 return AVERROR(EINVAL);
5185 for (i = 0; i < s->nb_programs; i++) {
5186 if (s->programs[i]->id != prog_id)
5189 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5190 if (st->index == s->programs[i]->stream_index[j]) {
5193 *p = s->programs[i];
5202 } else if (*spec == '#' ||
5203 (*spec == 'i' && *(spec + 1) == ':')) {
5206 spec += 1 + (*spec == 'i');
5207 stream_id = strtol(spec, &endptr, 0);
5208 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5209 return AVERROR(EINVAL);
5210 return match && (stream_id == st->id);
5211 } else if (*spec == 'm' && *(spec + 1) == ':') {
5212 AVDictionaryEntry *tag;
5218 val = strchr(spec, ':');
5220 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5222 return AVERROR(ENOMEM);
5224 tag = av_dict_get(st->metadata, key, NULL, 0);
5226 if (!val || !strcmp(tag->value, val + 1))
5235 return match && ret;
5236 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5237 AVCodecParameters *par = st->codecpar;
5238 #if FF_API_LAVF_AVCTX
5239 FF_DISABLE_DEPRECATION_WARNINGS
5240 AVCodecContext *codec = st->codec;
5241 FF_ENABLE_DEPRECATION_WARNINGS
5244 switch (par->codec_type) {
5245 case AVMEDIA_TYPE_AUDIO:
5246 val = par->sample_rate && par->channels;
5247 #if FF_API_LAVF_AVCTX
5248 val = val || (codec->sample_rate && codec->channels);
5250 if (par->format == AV_SAMPLE_FMT_NONE
5251 #if FF_API_LAVF_AVCTX
5252 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5257 case AVMEDIA_TYPE_VIDEO:
5258 val = par->width && par->height;
5259 #if FF_API_LAVF_AVCTX
5260 val = val || (codec->width && codec->height);
5262 if (par->format == AV_PIX_FMT_NONE
5263 #if FF_API_LAVF_AVCTX
5264 && codec->pix_fmt == AV_PIX_FMT_NONE
5269 case AVMEDIA_TYPE_UNKNOWN:
5276 #if FF_API_LAVF_AVCTX
5277 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5279 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5282 return AVERROR(EINVAL);
5290 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5295 const char *indexptr = NULL;
5296 AVProgram *p = NULL;
5299 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5306 index = strtol(indexptr, &endptr, 0);
5307 if (*endptr) { /* We can't have anything after the requested index. */
5308 ret = AVERROR(EINVAL);
5312 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5313 if (spec == indexptr)
5314 return (index == st->index);
5316 /* If we requested a matching stream index, we have to ensure st is that. */
5317 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5318 for (int i = 0; i < nb_streams && index >= 0; i++) {
5319 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5320 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5323 if (ret > 0 && index-- == 0 && st == candidate)
5329 if (ret == AVERROR(EINVAL))
5330 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5334 int ff_generate_avci_extradata(AVStream *st)
5336 static const uint8_t avci100_1080p_extradata[] = {
5338 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5339 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5340 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5341 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5342 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5343 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5344 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5345 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5346 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5348 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5351 static const uint8_t avci100_1080i_extradata[] = {
5353 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5354 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5355 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5356 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5357 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5358 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5359 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5360 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5361 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5362 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5363 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5365 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5368 static const uint8_t avci50_1080p_extradata[] = {
5370 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5371 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5372 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5373 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5374 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5375 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5376 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5377 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5378 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5380 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5383 static const uint8_t avci50_1080i_extradata[] = {
5385 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5386 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5387 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5388 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5389 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5390 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5391 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5392 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5393 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5394 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5395 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5397 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5400 static const uint8_t avci100_720p_extradata[] = {
5402 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5403 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5404 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5405 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5406 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5407 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5408 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5409 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5410 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5411 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5413 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5416 static const uint8_t avci50_720p_extradata[] = {
5418 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5419 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5420 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5421 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5422 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5423 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5424 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5425 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5426 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5428 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5432 const uint8_t *data = NULL;
5435 if (st->codecpar->width == 1920) {
5436 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5437 data = avci100_1080p_extradata;
5438 size = sizeof(avci100_1080p_extradata);
5440 data = avci100_1080i_extradata;
5441 size = sizeof(avci100_1080i_extradata);
5443 } else if (st->codecpar->width == 1440) {
5444 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5445 data = avci50_1080p_extradata;
5446 size = sizeof(avci50_1080p_extradata);
5448 data = avci50_1080i_extradata;
5449 size = sizeof(avci50_1080i_extradata);
5451 } else if (st->codecpar->width == 1280) {
5452 data = avci100_720p_extradata;
5453 size = sizeof(avci100_720p_extradata);
5454 } else if (st->codecpar->width == 960) {
5455 data = avci50_720p_extradata;
5456 size = sizeof(avci50_720p_extradata);
5462 av_freep(&st->codecpar->extradata);
5463 if (ff_alloc_extradata(st->codecpar, size))
5464 return AVERROR(ENOMEM);
5465 memcpy(st->codecpar->extradata, data, size);
5470 uint8_t *av_stream_get_side_data(const AVStream *st,
5471 enum AVPacketSideDataType type, int *size)
5475 for (i = 0; i < st->nb_side_data; i++) {
5476 if (st->side_data[i].type == type) {
5478 *size = st->side_data[i].size;
5479 return st->side_data[i].data;
5485 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5486 uint8_t *data, size_t size)
5488 AVPacketSideData *sd, *tmp;
5491 for (i = 0; i < st->nb_side_data; i++) {
5492 sd = &st->side_data[i];
5494 if (sd->type == type) {
5495 av_freep(&sd->data);
5502 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5503 return AVERROR(ERANGE);
5505 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5507 return AVERROR(ENOMEM);
5510 st->side_data = tmp;
5513 sd = &st->side_data[st->nb_side_data - 1];
5521 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5525 uint8_t *data = av_malloc(size);
5530 ret = av_stream_add_side_data(st, type, data, size);
5539 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5542 const AVBitStreamFilter *bsf;
5544 AVCodecParameters *in_par;
5546 if (!(bsf = av_bsf_get_by_name(name))) {
5547 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5548 return AVERROR_BSF_NOT_FOUND;
5551 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5554 if (st->internal->nb_bsfcs) {
5555 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5556 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5558 in_par = st->codecpar;
5559 bsfc->time_base_in = st->time_base;
5562 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5567 if (args && bsfc->filter->priv_class) {
5568 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5569 const char * shorthand[2] = {NULL};
5572 shorthand[0] = opt->name;
5574 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5580 if ((ret = av_bsf_init(bsfc)) < 0) {
5585 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5590 av_log(NULL, AV_LOG_VERBOSE,
5591 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5592 name, args ? args : "");
5597 FF_DISABLE_DEPRECATION_WARNINGS
5598 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5599 AVBitStreamFilterContext *bsfc)
5603 AVPacket new_pkt = *pkt;
5604 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5605 &new_pkt.data, &new_pkt.size,
5606 pkt->data, pkt->size,
5607 pkt->flags & AV_PKT_FLAG_KEY);
5608 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5609 av_packet_unref(pkt);
5610 memset(pkt, 0, sizeof(*pkt));
5613 if(a == 0 && new_pkt.data != pkt->data) {
5614 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
5616 memcpy(t, new_pkt.data, new_pkt.size);
5617 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5622 a = AVERROR(ENOMEM);
5626 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5627 av_buffer_default_free, NULL, 0);
5629 pkt->side_data = NULL;
5630 pkt->side_data_elems = 0;
5631 av_packet_unref(pkt);
5633 av_freep(&new_pkt.data);
5634 a = AVERROR(ENOMEM);
5638 av_log(codec, AV_LOG_ERROR,
5639 "Failed to open bitstream filter %s for stream %d with codec %s",
5640 bsfc->filter->name, pkt->stream_index,
5641 codec->codec ? codec->codec->name : "copy");
5651 FF_ENABLE_DEPRECATION_WARNINGS
5654 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5657 return AVERROR(EINVAL);
5659 if (!(s->oformat->flags & AVFMT_NOFILE))
5660 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5664 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5667 s->io_close(s, *pb);
5671 int ff_is_http_proto(char *filename) {
5672 const char *proto = avio_find_protocol_name(filename);
5673 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5676 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5678 AVDictionaryEntry *entry;
5679 int64_t parsed_timestamp;
5681 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5682 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5683 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5686 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5693 int ff_standardize_creation_time(AVFormatContext *s)
5696 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5698 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5702 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5707 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5709 if (size != AVPALETTE_SIZE) {
5710 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5711 return AVERROR_INVALIDDATA;
5713 memcpy(palette, side_data, AVPALETTE_SIZE);
5717 if (ret == CONTAINS_PAL) {
5719 for (i = 0; i < AVPALETTE_COUNT; i++)
5720 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5727 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5732 ret = av_bprint_finalize(buf, &str);
5735 if (!av_bprint_is_complete(buf)) {
5737 return AVERROR(ENOMEM);
5740 par->extradata = str;
5741 /* Note: the string is NUL terminated (so extradata can be read as a
5742 * string), but the ending character is not accounted in the size (in
5743 * binary formats you are likely not supposed to mux that character). When
5744 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5746 par->extradata_size = buf->len;
5750 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5751 AVStream *ost, const AVStream *ist,
5752 enum AVTimebaseSource copy_tb)
5754 //TODO: use [io]st->internal->avctx
5755 const AVCodecContext *dec_ctx = ist->codec;
5756 AVCodecContext *enc_ctx = ost->codec;
5758 enc_ctx->time_base = ist->time_base;
5760 * Avi is a special case here because it supports variable fps but
5761 * having the fps and timebase differe significantly adds quite some
5764 if (!strcmp(ofmt->name, "avi")) {
5765 #if FF_API_R_FRAME_RATE
5766 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5767 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5768 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5769 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5770 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5771 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5772 enc_ctx->time_base.num = ist->r_frame_rate.den;
5773 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5774 enc_ctx->ticks_per_frame = 2;
5777 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5778 && av_q2d(ist->time_base) < 1.0/500
5779 || copy_tb == AVFMT_TBCF_DECODER) {
5780 enc_ctx->time_base = dec_ctx->time_base;
5781 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5782 enc_ctx->time_base.den *= 2;
5783 enc_ctx->ticks_per_frame = 2;
5785 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5786 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5787 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5788 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5789 && av_q2d(ist->time_base) < 1.0/500
5790 || copy_tb == AVFMT_TBCF_DECODER) {
5791 enc_ctx->time_base = dec_ctx->time_base;
5792 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5796 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5797 && dec_ctx->time_base.num < dec_ctx->time_base.den
5798 && dec_ctx->time_base.num > 0
5799 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5800 enc_ctx->time_base = dec_ctx->time_base;
5803 if (ost->avg_frame_rate.num)
5804 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5806 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5807 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5812 AVRational av_stream_get_codec_timebase(const AVStream *st)
5814 // See avformat_transfer_internal_stream_timing_info() TODO.
5815 #if FF_API_LAVF_AVCTX
5816 FF_DISABLE_DEPRECATION_WARNINGS
5817 return st->codec->time_base;
5818 FF_ENABLE_DEPRECATION_WARNINGS
5820 return st->internal->avctx->time_base;
5824 void ff_format_set_url(AVFormatContext *s, char *url)
5829 #if FF_API_FORMAT_FILENAME
5830 FF_DISABLE_DEPRECATION_WARNINGS
5831 av_strlcpy(s->filename, url, sizeof(s->filename));
5832 FF_ENABLE_DEPRECATION_WARNINGS