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)
1450 AVPacket out_pkt = { 0 };
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 av_init_packet(&out_pkt);
1458 if (!size && !flush && 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 = 0, i, got_packet = 0;
1580 AVDictionary *metadata = NULL;
1582 av_init_packet(pkt);
1584 while (!got_packet && !s->internal->parse_queue) {
1587 /* read next packet */
1588 ret = ff_read_packet(s, pkt);
1590 if (ret == AVERROR(EAGAIN))
1592 /* flush the parsers */
1593 for (i = 0; i < s->nb_streams; i++) {
1595 if (st->parser && st->need_parsing)
1596 parse_packet(s, pkt, st->index, 1);
1598 /* all remaining packets are now in parse_queue =>
1599 * really terminate parsing */
1603 st = s->streams[pkt->stream_index];
1605 /* update context if required */
1606 if (st->internal->need_context_update) {
1607 if (avcodec_is_open(st->internal->avctx)) {
1608 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1609 avcodec_close(st->internal->avctx);
1610 st->info->found_decoder = 0;
1613 /* close parser, because it depends on the codec */
1614 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1615 av_parser_close(st->parser);
1619 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1621 av_packet_unref(pkt);
1625 #if FF_API_LAVF_AVCTX
1626 FF_DISABLE_DEPRECATION_WARNINGS
1627 /* update deprecated public codec context */
1628 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1630 av_packet_unref(pkt);
1633 FF_ENABLE_DEPRECATION_WARNINGS
1636 st->internal->need_context_update = 0;
1639 if (pkt->pts != AV_NOPTS_VALUE &&
1640 pkt->dts != AV_NOPTS_VALUE &&
1641 pkt->pts < pkt->dts) {
1642 av_log(s, AV_LOG_WARNING,
1643 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1645 av_ts2str(pkt->pts),
1646 av_ts2str(pkt->dts),
1649 if (s->debug & FF_FDEBUG_TS)
1650 av_log(s, AV_LOG_DEBUG,
1651 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1653 av_ts2str(pkt->pts),
1654 av_ts2str(pkt->dts),
1655 pkt->size, pkt->duration, pkt->flags);
1657 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1658 st->parser = av_parser_init(st->codecpar->codec_id);
1660 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1661 "%s, packets or times may be invalid.\n",
1662 avcodec_get_name(st->codecpar->codec_id));
1663 /* no parser available: just output the raw packets */
1664 st->need_parsing = AVSTREAM_PARSE_NONE;
1665 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1666 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1667 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1668 st->parser->flags |= PARSER_FLAG_ONCE;
1669 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1670 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1673 if (!st->need_parsing || !st->parser) {
1674 /* no parsing needed: we just output the packet as is */
1675 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1676 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1677 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1678 ff_reduce_index(s, st->index);
1679 av_add_index_entry(st, pkt->pos, pkt->dts,
1680 0, 0, AVINDEX_KEYFRAME);
1683 } else if (st->discard < AVDISCARD_ALL) {
1684 if ((ret = parse_packet(s, pkt, pkt->stream_index, 0)) < 0)
1686 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1687 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1688 st->codecpar->channels = st->internal->avctx->channels;
1689 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1690 st->codecpar->codec_id = st->internal->avctx->codec_id;
1693 av_packet_unref(pkt);
1695 if (pkt->flags & AV_PKT_FLAG_KEY)
1696 st->skip_to_keyframe = 0;
1697 if (st->skip_to_keyframe) {
1698 av_packet_unref(pkt);
1703 if (!got_packet && s->internal->parse_queue)
1704 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1707 AVStream *st = s->streams[pkt->stream_index];
1708 int discard_padding = 0;
1709 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1710 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1711 int64_t sample = ts_to_samples(st, pts);
1712 int duration = ts_to_samples(st, pkt->duration);
1713 int64_t end_sample = sample + duration;
1714 if (duration > 0 && end_sample >= st->first_discard_sample &&
1715 sample < st->last_discard_sample)
1716 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1718 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1719 st->skip_samples = st->start_skip_samples;
1720 if (st->skip_samples || discard_padding) {
1721 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1723 AV_WL32(p, st->skip_samples);
1724 AV_WL32(p + 4, discard_padding);
1725 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1727 st->skip_samples = 0;
1730 if (st->inject_global_side_data) {
1731 for (i = 0; i < st->nb_side_data; i++) {
1732 AVPacketSideData *src_sd = &st->side_data[i];
1735 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1738 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1740 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1744 memcpy(dst_data, src_sd->data, src_sd->size);
1746 st->inject_global_side_data = 0;
1750 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1752 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1753 av_dict_copy(&s->metadata, metadata, 0);
1754 av_dict_free(&metadata);
1755 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1758 #if FF_API_LAVF_AVCTX
1759 update_stream_avctx(s);
1762 if (s->debug & FF_FDEBUG_TS)
1763 av_log(s, AV_LOG_DEBUG,
1764 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1765 "size=%d, duration=%"PRId64", flags=%d\n",
1767 av_ts2str(pkt->pts),
1768 av_ts2str(pkt->dts),
1769 pkt->size, pkt->duration, pkt->flags);
1771 /* A demuxer might have returned EOF because of an IO error, let's
1772 * propagate this back to the user. */
1773 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1779 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1781 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1787 ret = s->internal->packet_buffer
1788 ? ff_packet_list_get(&s->internal->packet_buffer,
1789 &s->internal->packet_buffer_end, pkt)
1790 : read_frame_internal(s, pkt);
1797 AVPacketList *pktl = s->internal->packet_buffer;
1800 AVPacket *next_pkt = &pktl->pkt;
1802 if (next_pkt->dts != AV_NOPTS_VALUE) {
1803 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1804 // last dts seen for this stream. if any of packets following
1805 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1806 int64_t last_dts = next_pkt->dts;
1807 av_assert2(wrap_bits <= 64);
1808 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1809 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1810 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1811 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1813 next_pkt->pts = pktl->pkt.dts;
1815 if (last_dts != AV_NOPTS_VALUE) {
1816 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1817 last_dts = pktl->pkt.dts;
1822 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1823 // Fixing the last reference frame had none pts issue (For MXF etc).
1824 // We only do this when
1826 // 2. we are not able to resolve a pts value for current packet.
1827 // 3. the packets for this stream at the end of the files had valid dts.
1828 next_pkt->pts = last_dts + next_pkt->duration;
1830 pktl = s->internal->packet_buffer;
1833 /* read packet from packet buffer, if there is data */
1834 st = s->streams[next_pkt->stream_index];
1835 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1836 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1837 ret = ff_packet_list_get(&s->internal->packet_buffer,
1838 &s->internal->packet_buffer_end, pkt);
1843 ret = read_frame_internal(s, pkt);
1845 if (pktl && ret != AVERROR(EAGAIN)) {
1852 ret = ff_packet_list_put(&s->internal->packet_buffer,
1853 &s->internal->packet_buffer_end,
1856 av_packet_unref(pkt);
1863 st = s->streams[pkt->stream_index];
1864 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1865 ff_reduce_index(s, st->index);
1866 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1869 if (is_relative(pkt->dts))
1870 pkt->dts -= RELATIVE_TS_BASE;
1871 if (is_relative(pkt->pts))
1872 pkt->pts -= RELATIVE_TS_BASE;
1877 /* XXX: suppress the packet queue */
1878 static void flush_packet_queue(AVFormatContext *s)
1882 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1883 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1884 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1886 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1889 /*******************************************************/
1892 int av_find_default_stream_index(AVFormatContext *s)
1896 int best_stream = 0;
1897 int best_score = INT_MIN;
1899 if (s->nb_streams <= 0)
1901 for (i = 0; i < s->nb_streams; i++) {
1904 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1905 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1907 if (st->codecpar->width && st->codecpar->height)
1911 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1912 if (st->codecpar->sample_rate)
1915 if (st->codec_info_nb_frames)
1918 if (st->discard != AVDISCARD_ALL)
1921 if (score > best_score) {
1929 /** Flush the frame reader. */
1930 void ff_read_frame_flush(AVFormatContext *s)
1935 flush_packet_queue(s);
1937 /* Reset read state for each stream. */
1938 for (i = 0; i < s->nb_streams; i++) {
1942 av_parser_close(st->parser);
1945 st->last_IP_pts = AV_NOPTS_VALUE;
1946 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1947 if (st->first_dts == AV_NOPTS_VALUE)
1948 st->cur_dts = RELATIVE_TS_BASE;
1950 /* We set the current DTS to an unspecified origin. */
1951 st->cur_dts = AV_NOPTS_VALUE;
1953 st->probe_packets = MAX_PROBE_PACKETS;
1955 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1956 st->pts_buffer[j] = AV_NOPTS_VALUE;
1958 if (s->internal->inject_global_side_data)
1959 st->inject_global_side_data = 1;
1961 st->skip_samples = 0;
1965 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1969 for (i = 0; i < s->nb_streams; i++) {
1970 AVStream *st = s->streams[i];
1973 av_rescale(timestamp,
1974 st->time_base.den * (int64_t) ref_st->time_base.num,
1975 st->time_base.num * (int64_t) ref_st->time_base.den);
1979 void ff_reduce_index(AVFormatContext *s, int stream_index)
1981 AVStream *st = s->streams[stream_index];
1982 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1984 if ((unsigned) st->nb_index_entries >= max_entries) {
1986 for (i = 0; 2 * i < st->nb_index_entries; i++)
1987 st->index_entries[i] = st->index_entries[2 * i];
1988 st->nb_index_entries = i;
1992 int ff_add_index_entry(AVIndexEntry **index_entries,
1993 int *nb_index_entries,
1994 unsigned int *index_entries_allocated_size,
1995 int64_t pos, int64_t timestamp,
1996 int size, int distance, int flags)
1998 AVIndexEntry *entries, *ie;
2001 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
2004 if (timestamp == AV_NOPTS_VALUE)
2005 return AVERROR(EINVAL);
2007 if (size < 0 || size > 0x3FFFFFFF)
2008 return AVERROR(EINVAL);
2010 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2011 timestamp -= RELATIVE_TS_BASE;
2013 entries = av_fast_realloc(*index_entries,
2014 index_entries_allocated_size,
2015 (*nb_index_entries + 1) *
2016 sizeof(AVIndexEntry));
2020 *index_entries = entries;
2022 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2023 timestamp, AVSEEK_FLAG_ANY);
2026 index = (*nb_index_entries)++;
2027 ie = &entries[index];
2028 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2030 ie = &entries[index];
2031 if (ie->timestamp != timestamp) {
2032 if (ie->timestamp <= timestamp)
2034 memmove(entries + index + 1, entries + index,
2035 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2036 (*nb_index_entries)++;
2037 } else if (ie->pos == pos && distance < ie->min_distance)
2038 // do not reduce the distance
2039 distance = ie->min_distance;
2043 ie->timestamp = timestamp;
2044 ie->min_distance = distance;
2051 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2052 int size, int distance, int flags)
2054 timestamp = wrap_timestamp(st, timestamp);
2055 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2056 &st->index_entries_allocated_size, pos,
2057 timestamp, size, distance, flags);
2060 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2061 int64_t wanted_timestamp, int flags)
2069 // Optimize appending index entries at the end.
2070 if (b && entries[b - 1].timestamp < wanted_timestamp)
2076 // Search for the next non-discarded packet.
2077 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2079 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2085 timestamp = entries[m].timestamp;
2086 if (timestamp >= wanted_timestamp)
2088 if (timestamp <= wanted_timestamp)
2091 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2093 if (!(flags & AVSEEK_FLAG_ANY))
2094 while (m >= 0 && m < nb_entries &&
2095 !(entries[m].flags & AVINDEX_KEYFRAME))
2096 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2098 if (m == nb_entries)
2103 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2106 int64_t pos_delta = 0;
2108 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2109 const char *proto = avio_find_protocol_name(s->url);
2112 av_log(s, AV_LOG_INFO,
2113 "Protocol name not provided, cannot determine if input is local or "
2114 "a network protocol, buffers and access patterns cannot be configured "
2115 "optimally without knowing the protocol\n");
2118 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2121 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2122 AVStream *st1 = s->streams[ist1];
2123 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2124 AVStream *st2 = s->streams[ist2];
2130 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2131 AVIndexEntry *e1 = &st1->index_entries[i1];
2132 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2134 skip = FFMAX(skip, e1->size);
2135 for (; i2 < st2->nb_index_entries; i2++) {
2136 AVIndexEntry *e2 = &st2->index_entries[i2];
2137 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2138 if (e2_pts - e1_pts < time_tolerance)
2140 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2148 /* XXX This could be adjusted depending on protocol*/
2149 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2150 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2152 /* realloc the buffer and the original data will be retained */
2153 if (ffio_realloc_buf(s->pb, pos_delta)) {
2154 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2158 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2161 if (skip < (1<<23)) {
2162 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2166 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2168 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2169 wanted_timestamp, flags);
2172 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2173 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2175 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2176 if (stream_index >= 0)
2177 ts = wrap_timestamp(s->streams[stream_index], ts);
2181 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2182 int64_t target_ts, int flags)
2184 const AVInputFormat *avif = s->iformat;
2185 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2186 int64_t ts_min, ts_max, ts;
2191 if (stream_index < 0)
2194 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2197 ts_min = AV_NOPTS_VALUE;
2198 pos_limit = -1; // GCC falsely says it may be uninitialized.
2200 st = s->streams[stream_index];
2201 if (st->index_entries) {
2204 /* FIXME: Whole function must be checked for non-keyframe entries in
2205 * index case, especially read_timestamp(). */
2206 index = av_index_search_timestamp(st, target_ts,
2207 flags | AVSEEK_FLAG_BACKWARD);
2208 index = FFMAX(index, 0);
2209 e = &st->index_entries[index];
2211 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2213 ts_min = e->timestamp;
2214 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2215 pos_min, av_ts2str(ts_min));
2217 av_assert1(index == 0);
2220 index = av_index_search_timestamp(st, target_ts,
2221 flags & ~AVSEEK_FLAG_BACKWARD);
2222 av_assert0(index < st->nb_index_entries);
2224 e = &st->index_entries[index];
2225 av_assert1(e->timestamp >= target_ts);
2227 ts_max = e->timestamp;
2228 pos_limit = pos_max - e->min_distance;
2229 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2230 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2234 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2235 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2240 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2243 ff_read_frame_flush(s);
2244 ff_update_cur_dts(s, st, ts);
2249 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2250 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2252 int64_t step = 1024;
2253 int64_t limit, ts_max;
2254 int64_t filesize = avio_size(s->pb);
2255 int64_t pos_max = filesize - 1;
2258 pos_max = FFMAX(0, (pos_max) - step);
2259 ts_max = ff_read_timestamp(s, stream_index,
2260 &pos_max, limit, read_timestamp);
2262 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2263 if (ts_max == AV_NOPTS_VALUE)
2267 int64_t tmp_pos = pos_max + 1;
2268 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2269 &tmp_pos, INT64_MAX, read_timestamp);
2270 if (tmp_ts == AV_NOPTS_VALUE)
2272 av_assert0(tmp_pos > pos_max);
2275 if (tmp_pos >= filesize)
2287 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2288 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2289 int64_t ts_min, int64_t ts_max,
2290 int flags, int64_t *ts_ret,
2291 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2292 int64_t *, int64_t))
2299 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2301 if (ts_min == AV_NOPTS_VALUE) {
2302 pos_min = s->internal->data_offset;
2303 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2304 if (ts_min == AV_NOPTS_VALUE)
2308 if (ts_min >= target_ts) {
2313 if (ts_max == AV_NOPTS_VALUE) {
2314 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2316 pos_limit = pos_max;
2319 if (ts_max <= target_ts) {
2324 av_assert0(ts_min < ts_max);
2327 while (pos_min < pos_limit) {
2328 av_log(s, AV_LOG_TRACE,
2329 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2330 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2331 av_assert0(pos_limit <= pos_max);
2333 if (no_change == 0) {
2334 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2335 // interpolate position (better than dichotomy)
2336 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2338 pos_min - approximate_keyframe_distance;
2339 } else if (no_change == 1) {
2340 // bisection if interpolation did not change min / max pos last time
2341 pos = (pos_min + pos_limit) >> 1;
2343 /* linear search if bisection failed, can only happen if there
2344 * are very few or no keyframes between min/max */
2349 else if (pos > pos_limit)
2353 // May pass pos_limit instead of -1.
2354 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2359 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2360 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2361 pos_min, pos, pos_max,
2362 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2363 pos_limit, start_pos, no_change);
2364 if (ts == AV_NOPTS_VALUE) {
2365 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2368 if (target_ts <= ts) {
2369 pos_limit = start_pos - 1;
2373 if (target_ts >= ts) {
2379 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2380 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2383 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2385 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2386 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2387 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2393 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2394 int64_t pos, int flags)
2396 int64_t pos_min, pos_max;
2398 pos_min = s->internal->data_offset;
2399 pos_max = avio_size(s->pb) - 1;
2403 else if (pos > pos_max)
2406 avio_seek(s->pb, pos, SEEK_SET);
2408 s->io_repositioned = 1;
2413 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2414 int64_t timestamp, int flags)
2421 st = s->streams[stream_index];
2423 index = av_index_search_timestamp(st, timestamp, flags);
2425 if (index < 0 && st->nb_index_entries &&
2426 timestamp < st->index_entries[0].timestamp)
2429 if (index < 0 || index == st->nb_index_entries - 1) {
2433 if (st->nb_index_entries) {
2434 av_assert0(st->index_entries);
2435 ie = &st->index_entries[st->nb_index_entries - 1];
2436 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2438 ff_update_cur_dts(s, st, ie->timestamp);
2440 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2446 read_status = av_read_frame(s, &pkt);
2447 } while (read_status == AVERROR(EAGAIN));
2448 if (read_status < 0)
2450 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2451 if (pkt.flags & AV_PKT_FLAG_KEY) {
2452 av_packet_unref(&pkt);
2455 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2456 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);
2457 av_packet_unref(&pkt);
2461 av_packet_unref(&pkt);
2463 index = av_index_search_timestamp(st, timestamp, flags);
2468 ff_read_frame_flush(s);
2469 if (s->iformat->read_seek)
2470 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2472 ie = &st->index_entries[index];
2473 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2475 ff_update_cur_dts(s, st, ie->timestamp);
2480 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2481 int64_t timestamp, int flags)
2486 if (flags & AVSEEK_FLAG_BYTE) {
2487 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2489 ff_read_frame_flush(s);
2490 return seek_frame_byte(s, stream_index, timestamp, flags);
2493 if (stream_index < 0) {
2494 stream_index = av_find_default_stream_index(s);
2495 if (stream_index < 0)
2498 st = s->streams[stream_index];
2499 /* timestamp for default must be expressed in AV_TIME_BASE units */
2500 timestamp = av_rescale(timestamp, st->time_base.den,
2501 AV_TIME_BASE * (int64_t) st->time_base.num);
2504 /* first, we try the format specific seek */
2505 if (s->iformat->read_seek) {
2506 ff_read_frame_flush(s);
2507 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2513 if (s->iformat->read_timestamp &&
2514 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2515 ff_read_frame_flush(s);
2516 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2517 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2518 ff_read_frame_flush(s);
2519 return seek_frame_generic(s, stream_index, timestamp, flags);
2524 int av_seek_frame(AVFormatContext *s, int stream_index,
2525 int64_t timestamp, int flags)
2529 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2530 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2531 if ((flags & AVSEEK_FLAG_BACKWARD))
2535 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2536 flags & ~AVSEEK_FLAG_BACKWARD);
2539 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2542 ret = avformat_queue_attached_pictures(s);
2547 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2548 int64_t ts, int64_t max_ts, int flags)
2550 if (min_ts > ts || max_ts < ts)
2552 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2553 return AVERROR(EINVAL);
2556 flags |= AVSEEK_FLAG_ANY;
2557 flags &= ~AVSEEK_FLAG_BACKWARD;
2559 if (s->iformat->read_seek2) {
2561 ff_read_frame_flush(s);
2563 if (stream_index == -1 && s->nb_streams == 1) {
2564 AVRational time_base = s->streams[0]->time_base;
2565 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2566 min_ts = av_rescale_rnd(min_ts, time_base.den,
2567 time_base.num * (int64_t)AV_TIME_BASE,
2568 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2569 max_ts = av_rescale_rnd(max_ts, time_base.den,
2570 time_base.num * (int64_t)AV_TIME_BASE,
2571 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2575 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2579 ret = avformat_queue_attached_pictures(s);
2583 if (s->iformat->read_timestamp) {
2584 // try to seek via read_timestamp()
2587 // Fall back on old API if new is not implemented but old is.
2588 // Note the old API has somewhat different semantics.
2589 if (s->iformat->read_seek || 1) {
2590 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2591 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2592 if (ret<0 && ts != min_ts && max_ts != ts) {
2593 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2595 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2600 // try some generic seek like seek_frame_generic() but with new ts semantics
2601 return -1; //unreachable
2604 int avformat_flush(AVFormatContext *s)
2606 ff_read_frame_flush(s);
2610 /*******************************************************/
2613 * Return TRUE if the stream has accurate duration in any stream.
2615 * @return TRUE if the stream has accurate duration for at least one component.
2617 static int has_duration(AVFormatContext *ic)
2622 for (i = 0; i < ic->nb_streams; i++) {
2623 st = ic->streams[i];
2624 if (st->duration != AV_NOPTS_VALUE)
2627 if (ic->duration != AV_NOPTS_VALUE)
2633 * Estimate the stream timings from the one of each components.
2635 * Also computes the global bitrate if possible.
2637 static void update_stream_timings(AVFormatContext *ic)
2639 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2640 int64_t duration, duration1, duration_text, filesize;
2644 start_time = INT64_MAX;
2645 start_time_text = INT64_MAX;
2646 end_time = INT64_MIN;
2647 end_time_text = INT64_MIN;
2648 duration = INT64_MIN;
2649 duration_text = INT64_MIN;
2651 for (i = 0; i < ic->nb_streams; i++) {
2652 AVStream *st = ic->streams[i];
2653 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2654 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2655 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2656 start_time1 = av_rescale_q(st->start_time, st->time_base,
2659 start_time_text = FFMIN(start_time_text, start_time1);
2661 start_time = FFMIN(start_time, start_time1);
2662 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2664 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2665 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2666 end_time1 += start_time1;
2668 end_time_text = FFMAX(end_time_text, end_time1);
2670 end_time = FFMAX(end_time, end_time1);
2672 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2673 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2674 p->start_time = start_time1;
2675 if (p->end_time < end_time1)
2676 p->end_time = end_time1;
2679 if (st->duration != AV_NOPTS_VALUE) {
2680 duration1 = av_rescale_q(st->duration, st->time_base,
2683 duration_text = FFMAX(duration_text, duration1);
2685 duration = FFMAX(duration, duration1);
2688 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2689 start_time = start_time_text;
2690 else if (start_time > start_time_text)
2691 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2693 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2694 end_time = end_time_text;
2695 else if (end_time < end_time_text)
2696 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2698 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2699 duration = duration_text;
2700 else if (duration < duration_text)
2701 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2703 if (start_time != INT64_MAX) {
2704 ic->start_time = start_time;
2705 if (end_time != INT64_MIN) {
2706 if (ic->nb_programs > 1) {
2707 for (i = 0; i < ic->nb_programs; i++) {
2708 p = ic->programs[i];
2709 if (p->start_time != AV_NOPTS_VALUE &&
2710 p->end_time > p->start_time &&
2711 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2712 duration = FFMAX(duration, p->end_time - p->start_time);
2714 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2715 duration = FFMAX(duration, end_time - start_time);
2719 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2720 ic->duration = duration;
2722 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2723 /* compute the bitrate */
2724 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2725 (double) ic->duration;
2726 if (bitrate >= 0 && bitrate <= INT64_MAX)
2727 ic->bit_rate = bitrate;
2731 static void fill_all_stream_timings(AVFormatContext *ic)
2736 update_stream_timings(ic);
2737 for (i = 0; i < ic->nb_streams; i++) {
2738 st = ic->streams[i];
2739 if (st->start_time == AV_NOPTS_VALUE) {
2740 if (ic->start_time != AV_NOPTS_VALUE)
2741 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2743 if (ic->duration != AV_NOPTS_VALUE)
2744 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2750 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2752 int64_t filesize, duration;
2753 int i, show_warning = 0;
2756 /* if bit_rate is already set, we believe it */
2757 if (ic->bit_rate <= 0) {
2758 int64_t bit_rate = 0;
2759 for (i = 0; i < ic->nb_streams; i++) {
2760 st = ic->streams[i];
2761 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2762 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2763 if (st->codecpar->bit_rate > 0) {
2764 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2768 bit_rate += st->codecpar->bit_rate;
2769 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2770 // If we have a videostream with packets but without a bitrate
2771 // then consider the sum not known
2776 ic->bit_rate = bit_rate;
2779 /* if duration is already set, we believe it */
2780 if (ic->duration == AV_NOPTS_VALUE &&
2781 ic->bit_rate != 0) {
2782 filesize = ic->pb ? avio_size(ic->pb) : 0;
2783 if (filesize > ic->internal->data_offset) {
2784 filesize -= ic->internal->data_offset;
2785 for (i = 0; i < ic->nb_streams; i++) {
2786 st = ic->streams[i];
2787 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2788 && st->duration == AV_NOPTS_VALUE) {
2789 duration = av_rescale(8 * filesize, st->time_base.den,
2791 (int64_t) st->time_base.num);
2792 st->duration = duration;
2799 av_log(ic, AV_LOG_WARNING,
2800 "Estimating duration from bitrate, this may be inaccurate\n");
2803 #define DURATION_MAX_READ_SIZE 250000LL
2804 #define DURATION_MAX_RETRY 6
2806 /* only usable for MPEG-PS streams */
2807 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2809 AVPacket pkt1, *pkt = &pkt1;
2811 int num, den, read_size, i, ret;
2812 int found_duration = 0;
2814 int64_t filesize, offset, duration;
2817 /* flush packet queue */
2818 flush_packet_queue(ic);
2820 for (i = 0; i < ic->nb_streams; i++) {
2821 st = ic->streams[i];
2822 if (st->start_time == AV_NOPTS_VALUE &&
2823 st->first_dts == AV_NOPTS_VALUE &&
2824 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2825 av_log(ic, AV_LOG_WARNING,
2826 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2829 av_parser_close(st->parser);
2834 if (ic->skip_estimate_duration_from_pts) {
2835 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2836 goto skip_duration_calc;
2839 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2840 /* estimate the end time (duration) */
2841 /* XXX: may need to support wrapping */
2842 filesize = ic->pb ? avio_size(ic->pb) : 0;
2844 is_end = found_duration;
2845 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2849 avio_seek(ic->pb, offset, SEEK_SET);
2852 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2856 ret = ff_read_packet(ic, pkt);
2857 } while (ret == AVERROR(EAGAIN));
2860 read_size += pkt->size;
2861 st = ic->streams[pkt->stream_index];
2862 if (pkt->pts != AV_NOPTS_VALUE &&
2863 (st->start_time != AV_NOPTS_VALUE ||
2864 st->first_dts != AV_NOPTS_VALUE)) {
2865 if (pkt->duration == 0) {
2866 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2868 pkt->duration = av_rescale_rnd(1,
2869 num * (int64_t) st->time_base.den,
2870 den * (int64_t) st->time_base.num,
2874 duration = pkt->pts + pkt->duration;
2876 if (st->start_time != AV_NOPTS_VALUE)
2877 duration -= st->start_time;
2879 duration -= st->first_dts;
2881 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2882 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2883 st->duration = duration;
2884 st->info->last_duration = duration;
2887 av_packet_unref(pkt);
2890 /* check if all audio/video streams have valid duration */
2893 for (i = 0; i < ic->nb_streams; i++) {
2894 st = ic->streams[i];
2895 switch (st->codecpar->codec_type) {
2896 case AVMEDIA_TYPE_VIDEO:
2897 case AVMEDIA_TYPE_AUDIO:
2898 if (st->duration == AV_NOPTS_VALUE)
2905 ++retry <= DURATION_MAX_RETRY);
2907 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2909 /* warn about audio/video streams which duration could not be estimated */
2910 for (i = 0; i < ic->nb_streams; i++) {
2911 st = ic->streams[i];
2912 if (st->duration == AV_NOPTS_VALUE) {
2913 switch (st->codecpar->codec_type) {
2914 case AVMEDIA_TYPE_VIDEO:
2915 case AVMEDIA_TYPE_AUDIO:
2916 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2917 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2919 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2924 fill_all_stream_timings(ic);
2926 avio_seek(ic->pb, old_offset, SEEK_SET);
2927 for (i = 0; i < ic->nb_streams; i++) {
2930 st = ic->streams[i];
2931 st->cur_dts = st->first_dts;
2932 st->last_IP_pts = AV_NOPTS_VALUE;
2933 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2934 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2935 st->pts_buffer[j] = AV_NOPTS_VALUE;
2939 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2943 /* get the file size, if possible */
2944 if (ic->iformat->flags & AVFMT_NOFILE) {
2947 file_size = avio_size(ic->pb);
2948 file_size = FFMAX(0, file_size);
2951 if ((!strcmp(ic->iformat->name, "mpeg") ||
2952 !strcmp(ic->iformat->name, "mpegts")) &&
2953 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2954 /* get accurate estimate from the PTSes */
2955 estimate_timings_from_pts(ic, old_offset);
2956 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2957 } else if (has_duration(ic)) {
2958 /* at least one component has timings - we use them for all
2960 fill_all_stream_timings(ic);
2961 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2963 /* less precise: use bitrate info */
2964 estimate_timings_from_bit_rate(ic);
2965 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2967 update_stream_timings(ic);
2971 AVStream av_unused *st;
2972 for (i = 0; i < ic->nb_streams; i++) {
2973 st = ic->streams[i];
2974 if (st->time_base.den)
2975 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2976 (double) st->start_time * av_q2d(st->time_base),
2977 (double) st->duration * av_q2d(st->time_base));
2979 av_log(ic, AV_LOG_TRACE,
2980 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2981 (double) ic->start_time / AV_TIME_BASE,
2982 (double) ic->duration / AV_TIME_BASE,
2983 (int64_t)ic->bit_rate / 1000);
2987 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2989 AVCodecContext *avctx = st->internal->avctx;
2991 #define FAIL(errmsg) do { \
2993 *errmsg_ptr = errmsg; \
2997 if ( avctx->codec_id == AV_CODEC_ID_NONE
2998 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2999 FAIL("unknown codec");
3000 switch (avctx->codec_type) {
3001 case AVMEDIA_TYPE_AUDIO:
3002 if (!avctx->frame_size && determinable_frame_size(avctx))
3003 FAIL("unspecified frame size");
3004 if (st->info->found_decoder >= 0 &&
3005 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
3006 FAIL("unspecified sample format");
3007 if (!avctx->sample_rate)
3008 FAIL("unspecified sample rate");
3009 if (!avctx->channels)
3010 FAIL("unspecified number of channels");
3011 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3012 FAIL("no decodable DTS frames");
3014 case AVMEDIA_TYPE_VIDEO:
3016 FAIL("unspecified size");
3017 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3018 FAIL("unspecified pixel format");
3019 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3020 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3021 FAIL("no frame in rv30/40 and no sar");
3023 case AVMEDIA_TYPE_SUBTITLE:
3024 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3025 FAIL("unspecified size");
3027 case AVMEDIA_TYPE_DATA:
3028 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3034 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3035 static int try_decode_frame(AVFormatContext *s, AVStream *st,
3036 const AVPacket *avpkt, AVDictionary **options)
3038 AVCodecContext *avctx = st->internal->avctx;
3039 const AVCodec *codec;
3040 int got_picture = 1, ret = 0;
3041 AVFrame *frame = av_frame_alloc();
3042 AVSubtitle subtitle;
3043 AVPacket pkt = *avpkt;
3044 int do_skip_frame = 0;
3045 enum AVDiscard skip_frame;
3048 return AVERROR(ENOMEM);
3050 if (!avcodec_is_open(avctx) &&
3051 st->info->found_decoder <= 0 &&
3052 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3053 AVDictionary *thread_opt = NULL;
3055 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3058 st->info->found_decoder = -st->codecpar->codec_id;
3063 /* Force thread count to 1 since the H.264 decoder will not extract
3064 * SPS and PPS to extradata during multi-threaded decoding. */
3065 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3066 if (s->codec_whitelist)
3067 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3068 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3070 av_dict_free(&thread_opt);
3072 st->info->found_decoder = -avctx->codec_id;
3075 st->info->found_decoder = 1;
3076 } else if (!st->info->found_decoder)
3077 st->info->found_decoder = 1;
3079 if (st->info->found_decoder < 0) {
3084 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3086 skip_frame = avctx->skip_frame;
3087 avctx->skip_frame = AVDISCARD_ALL;
3090 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3092 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3093 (!st->codec_info_nb_frames &&
3094 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3096 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3097 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3098 ret = avcodec_send_packet(avctx, &pkt);
3099 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3103 ret = avcodec_receive_frame(avctx, frame);
3106 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3108 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3109 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3110 &got_picture, &pkt);
3116 st->nb_decoded_frames++;
3121 if (!pkt.data && !got_picture)
3125 if (do_skip_frame) {
3126 avctx->skip_frame = skip_frame;
3129 av_frame_free(&frame);
3133 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3135 while (tags->id != AV_CODEC_ID_NONE) {
3143 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3146 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3147 if (tag == tags[i].tag)
3149 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3150 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3152 return AV_CODEC_ID_NONE;
3155 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3157 if (bps <= 0 || bps > 64)
3158 return AV_CODEC_ID_NONE;
3163 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3165 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3167 return AV_CODEC_ID_NONE;
3172 if (sflags & (1 << (bps - 1))) {
3175 return AV_CODEC_ID_PCM_S8;
3177 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3179 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3181 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3183 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3185 return AV_CODEC_ID_NONE;
3190 return AV_CODEC_ID_PCM_U8;
3192 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3194 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3196 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3198 return AV_CODEC_ID_NONE;
3204 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3207 if (!av_codec_get_tag2(tags, id, &tag))
3212 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3216 for (i = 0; tags && tags[i]; i++) {
3217 const AVCodecTag *codec_tags = tags[i];
3218 while (codec_tags->id != AV_CODEC_ID_NONE) {
3219 if (codec_tags->id == id) {
3220 *tag = codec_tags->tag;
3229 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3232 for (i = 0; tags && tags[i]; i++) {
3233 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3234 if (id != AV_CODEC_ID_NONE)
3237 return AV_CODEC_ID_NONE;
3240 static void compute_chapters_end(AVFormatContext *s)
3243 int64_t max_time = 0;
3245 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3246 max_time = s->duration +
3247 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3249 for (i = 0; i < s->nb_chapters; i++)
3250 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3251 AVChapter *ch = s->chapters[i];
3252 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3256 for (j = 0; j < s->nb_chapters; j++) {
3257 AVChapter *ch1 = s->chapters[j];
3258 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3260 if (j != i && next_start > ch->start && next_start < end)
3263 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3267 static int get_std_framerate(int i)
3270 return (i + 1) * 1001;
3274 return (i + 31) * 1001 * 12;
3278 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3282 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3285 /* Is the time base unreliable?
3286 * This is a heuristic to balance between quick acceptance of the values in
3287 * the headers vs. some extra checks.
3288 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3289 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3290 * And there are "variable" fps files this needs to detect as well. */
3291 static int tb_unreliable(AVCodecContext *c)
3293 if (c->time_base.den >= 101LL * c->time_base.num ||
3294 c->time_base.den < 5LL * c->time_base.num ||
3295 // c->codec_tag == AV_RL32("DIVX") ||
3296 // c->codec_tag == AV_RL32("XVID") ||
3297 c->codec_tag == AV_RL32("mp4v") ||
3298 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3299 c->codec_id == AV_CODEC_ID_GIF ||
3300 c->codec_id == AV_CODEC_ID_HEVC ||
3301 c->codec_id == AV_CODEC_ID_H264)
3306 int ff_alloc_extradata(AVCodecParameters *par, int size)
3308 av_freep(&par->extradata);
3309 par->extradata_size = 0;
3311 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3312 return AVERROR(EINVAL);
3314 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3315 if (!par->extradata)
3316 return AVERROR(ENOMEM);
3318 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3319 par->extradata_size = size;
3324 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3326 int ret = ff_alloc_extradata(par, size);
3329 ret = avio_read(pb, par->extradata, size);
3331 av_freep(&par->extradata);
3332 par->extradata_size = 0;
3333 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3334 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3340 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3343 int64_t last = st->info->last_dts;
3345 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3346 && ts - (uint64_t)last < INT64_MAX) {
3347 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3348 int64_t duration = ts - last;
3350 if (!st->info->duration_error)
3351 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3352 if (!st->info->duration_error)
3353 return AVERROR(ENOMEM);
3355 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3356 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3357 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3358 if (st->info->duration_error[0][1][i] < 1e10) {
3359 int framerate = get_std_framerate(i);
3360 double sdts = dts*framerate/(1001*12);
3361 for (j= 0; j<2; j++) {
3362 int64_t ticks = llrint(sdts+j*0.5);
3363 double error= sdts - ticks + j*0.5;
3364 st->info->duration_error[j][0][i] += error;
3365 st->info->duration_error[j][1][i] += error*error;
3369 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3370 st->info->duration_count++;
3371 st->info->rfps_duration_sum += duration;
3374 if (st->info->duration_count % 10 == 0) {
3375 int n = st->info->duration_count;
3376 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3377 if (st->info->duration_error[0][1][i] < 1e10) {
3378 double a0 = st->info->duration_error[0][0][i] / n;
3379 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3380 double a1 = st->info->duration_error[1][0][i] / n;
3381 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3382 if (error0 > 0.04 && error1 > 0.04) {
3383 st->info->duration_error[0][1][i] = 2e10;
3384 st->info->duration_error[1][1][i] = 2e10;
3390 // ignore the first 4 values, they might have some random jitter
3391 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3392 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3394 if (ts != AV_NOPTS_VALUE)
3395 st->info->last_dts = ts;
3400 void ff_rfps_calculate(AVFormatContext *ic)
3404 for (i = 0; i < ic->nb_streams; i++) {
3405 AVStream *st = ic->streams[i];
3407 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3409 // the check for tb_unreliable() is not completely correct, since this is not about handling
3410 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3411 // ipmovie.c produces.
3412 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)
3413 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);
3414 if (st->info->duration_count>1 && !st->r_frame_rate.num
3415 && tb_unreliable(st->internal->avctx)) {
3417 double best_error= 0.01;
3418 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3420 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3423 if (st->info->codec_info_duration &&
3424 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3426 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3429 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3432 for (k= 0; k<2; k++) {
3433 int n = st->info->duration_count;
3434 double a= st->info->duration_error[k][0][j] / n;
3435 double error= st->info->duration_error[k][1][j]/n - a*a;
3437 if (error < best_error && best_error> 0.000000001) {
3439 num = get_std_framerate(j);
3442 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3445 // do not increase frame rate by more than 1 % in order to match a standard rate.
3446 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3447 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3449 if ( !st->avg_frame_rate.num
3450 && st->r_frame_rate.num && st->info->rfps_duration_sum
3451 && st->info->codec_info_duration <= 0
3452 && st->info->duration_count > 2
3453 && 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
3455 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3456 st->avg_frame_rate = st->r_frame_rate;
3459 av_freep(&st->info->duration_error);
3460 st->info->last_dts = AV_NOPTS_VALUE;
3461 st->info->duration_count = 0;
3462 st->info->rfps_duration_sum = 0;
3466 static int extract_extradata_check(AVStream *st)
3468 const AVBitStreamFilter *f;
3470 f = av_bsf_get_by_name("extract_extradata");
3475 const enum AVCodecID *ids;
3476 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3477 if (*ids == st->codecpar->codec_id)
3484 static int extract_extradata_init(AVStream *st)
3486 AVStreamInternal *sti = st->internal;
3487 const AVBitStreamFilter *f;
3490 f = av_bsf_get_by_name("extract_extradata");
3494 /* check that the codec id is supported */
3495 ret = extract_extradata_check(st);
3499 sti->extract_extradata.pkt = av_packet_alloc();
3500 if (!sti->extract_extradata.pkt)
3501 return AVERROR(ENOMEM);
3503 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3507 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3512 sti->extract_extradata.bsf->time_base_in = st->time_base;
3514 ret = av_bsf_init(sti->extract_extradata.bsf);
3519 sti->extract_extradata.inited = 1;
3523 av_bsf_free(&sti->extract_extradata.bsf);
3524 av_packet_free(&sti->extract_extradata.pkt);
3528 static int extract_extradata(AVStream *st, const AVPacket *pkt)
3530 AVStreamInternal *sti = st->internal;
3534 if (!sti->extract_extradata.inited) {
3535 ret = extract_extradata_init(st);
3540 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3543 pkt_ref = sti->extract_extradata.pkt;
3544 ret = av_packet_ref(pkt_ref, pkt);
3548 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3550 av_packet_unref(pkt_ref);
3554 while (ret >= 0 && !sti->avctx->extradata) {
3558 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3560 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3565 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3569 av_assert0(!sti->avctx->extradata);
3570 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3571 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3572 if (!sti->avctx->extradata) {
3573 av_packet_unref(pkt_ref);
3574 return AVERROR(ENOMEM);
3576 memcpy(sti->avctx->extradata, extradata, extradata_size);
3577 sti->avctx->extradata_size = extradata_size;
3579 av_packet_unref(pkt_ref);
3585 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3587 int i, count = 0, ret = 0, j;
3590 AVCodecContext *avctx;
3592 int64_t old_offset = avio_tell(ic->pb);
3593 // new streams might appear, no options for those
3594 int orig_nb_streams = ic->nb_streams;
3596 int64_t max_analyze_duration = ic->max_analyze_duration;
3597 int64_t max_stream_analyze_duration;
3598 int64_t max_subtitle_analyze_duration;
3599 int64_t probesize = ic->probesize;
3600 int eof_reached = 0;
3601 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3603 flush_codecs = probesize > 0;
3605 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3607 max_stream_analyze_duration = max_analyze_duration;
3608 max_subtitle_analyze_duration = max_analyze_duration;
3609 if (!max_analyze_duration) {
3610 max_stream_analyze_duration =
3611 max_analyze_duration = 5*AV_TIME_BASE;
3612 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3613 if (!strcmp(ic->iformat->name, "flv"))
3614 max_stream_analyze_duration = 90*AV_TIME_BASE;
3615 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3616 max_stream_analyze_duration = 7*AV_TIME_BASE;
3620 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3621 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3623 for (i = 0; i < ic->nb_streams; i++) {
3624 const AVCodec *codec;
3625 AVDictionary *thread_opt = NULL;
3626 st = ic->streams[i];
3627 avctx = st->internal->avctx;
3629 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3630 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3631 /* if (!st->time_base.num)
3633 if (!avctx->time_base.num)
3634 avctx->time_base = st->time_base;
3637 /* check if the caller has overridden the codec id */
3638 #if FF_API_LAVF_AVCTX
3639 FF_DISABLE_DEPRECATION_WARNINGS
3640 if (st->codec->codec_id != st->internal->orig_codec_id) {
3641 st->codecpar->codec_id = st->codec->codec_id;
3642 st->codecpar->codec_type = st->codec->codec_type;
3643 st->internal->orig_codec_id = st->codec->codec_id;
3645 FF_ENABLE_DEPRECATION_WARNINGS
3647 // only for the split stuff
3648 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3649 st->parser = av_parser_init(st->codecpar->codec_id);
3651 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3652 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3653 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3654 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3656 } else if (st->need_parsing) {
3657 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3658 "%s, packets or times may be invalid.\n",
3659 avcodec_get_name(st->codecpar->codec_id));
3663 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3664 st->internal->orig_codec_id = st->codecpar->codec_id;
3666 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3668 goto find_stream_info_err;
3669 if (st->request_probe <= 0)
3670 st->internal->avctx_inited = 1;
3672 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3674 /* Force thread count to 1 since the H.264 decoder will not extract
3675 * SPS and PPS to extradata during multi-threaded decoding. */
3676 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3678 if (ic->codec_whitelist)
3679 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3681 /* Ensure that subtitle_header is properly set. */
3682 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3683 && codec && !avctx->codec) {
3684 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3685 av_log(ic, AV_LOG_WARNING,
3686 "Failed to open codec in %s\n",__FUNCTION__);
3689 // Try to just open decoders, in case this is enough to get parameters.
3690 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3691 if (codec && !avctx->codec)
3692 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3693 av_log(ic, AV_LOG_WARNING,
3694 "Failed to open codec in %s\n",__FUNCTION__);
3697 av_dict_free(&thread_opt);
3700 for (i = 0; i < ic->nb_streams; i++) {
3701 #if FF_API_R_FRAME_RATE
3702 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3704 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3705 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3710 const AVPacket *pkt;
3711 int analyzed_all_streams;
3712 if (ff_check_interrupt(&ic->interrupt_callback)) {
3714 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3718 /* check if one codec still needs to be handled */
3719 for (i = 0; i < ic->nb_streams; i++) {
3720 int fps_analyze_framecount = 20;
3723 st = ic->streams[i];
3724 if (!has_codec_parameters(st, NULL))
3726 /* If the timebase is coarse (like the usual millisecond precision
3727 * of mkv), we need to analyze more frames to reliably arrive at
3728 * the correct fps. */
3729 if (av_q2d(st->time_base) > 0.0005)
3730 fps_analyze_framecount *= 2;
3731 if (!tb_unreliable(st->internal->avctx))
3732 fps_analyze_framecount = 0;
3733 if (ic->fps_probe_size >= 0)
3734 fps_analyze_framecount = ic->fps_probe_size;
3735 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3736 fps_analyze_framecount = 0;
3737 /* variable fps and no guess at the real fps */
3738 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3739 st->info->codec_info_duration_fields/2 :
3740 st->info->duration_count;
3741 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3742 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3743 if (count < fps_analyze_framecount)
3746 // Look at the first 3 frames if there is evidence of frame delay
3747 // but the decoder delay is not set.
3748 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3750 if (!st->internal->avctx->extradata &&
3751 (!st->internal->extract_extradata.inited ||
3752 st->internal->extract_extradata.bsf) &&
3753 extract_extradata_check(st))
3755 if (st->first_dts == AV_NOPTS_VALUE &&
3756 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3757 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3758 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3759 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3762 analyzed_all_streams = 0;
3763 if (!missing_streams || !*missing_streams)
3764 if (i == ic->nb_streams) {
3765 analyzed_all_streams = 1;
3766 /* NOTE: If the format has no header, then we need to read some
3767 * packets to get most of the streams, so we cannot stop here. */
3768 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3769 /* If we found the info for all the codecs, we can stop. */
3771 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3776 /* We did not get all the codec info, but we read too much data. */
3777 if (read_size >= probesize) {
3779 av_log(ic, AV_LOG_DEBUG,
3780 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3781 for (i = 0; i < ic->nb_streams; i++)
3782 if (!ic->streams[i]->r_frame_rate.num &&
3783 ic->streams[i]->info->duration_count <= 1 &&
3784 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3785 strcmp(ic->iformat->name, "image2"))
3786 av_log(ic, AV_LOG_WARNING,
3787 "Stream #%d: not enough frames to estimate rate; "
3788 "consider increasing probesize\n", i);
3792 /* NOTE: A new stream can be added there if no header in file
3793 * (AVFMTCTX_NOHEADER). */
3794 ret = read_frame_internal(ic, &pkt1);
3795 if (ret == AVERROR(EAGAIN))
3804 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3805 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3806 &ic->internal->packet_buffer_end,
3809 goto unref_then_goto_end;
3811 pkt = &ic->internal->packet_buffer_end->pkt;
3816 st = ic->streams[pkt->stream_index];
3817 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3818 read_size += pkt->size;
3820 avctx = st->internal->avctx;
3821 if (!st->internal->avctx_inited) {
3822 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3824 goto unref_then_goto_end;
3825 st->internal->avctx_inited = 1;
3828 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3829 /* check for non-increasing dts */
3830 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3831 st->info->fps_last_dts >= pkt->dts) {
3832 av_log(ic, AV_LOG_DEBUG,
3833 "Non-increasing DTS in stream %d: packet %d with DTS "
3834 "%"PRId64", packet %d with DTS %"PRId64"\n",
3835 st->index, st->info->fps_last_dts_idx,
3836 st->info->fps_last_dts, st->codec_info_nb_frames,
3838 st->info->fps_first_dts =
3839 st->info->fps_last_dts = AV_NOPTS_VALUE;
3841 /* Check for a discontinuity in dts. If the difference in dts
3842 * is more than 1000 times the average packet duration in the
3843 * sequence, we treat it as a discontinuity. */
3844 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3845 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3846 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3847 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3848 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3849 av_log(ic, AV_LOG_WARNING,
3850 "DTS discontinuity in stream %d: packet %d with DTS "
3851 "%"PRId64", packet %d with DTS %"PRId64"\n",
3852 st->index, st->info->fps_last_dts_idx,
3853 st->info->fps_last_dts, st->codec_info_nb_frames,
3855 st->info->fps_first_dts =
3856 st->info->fps_last_dts = AV_NOPTS_VALUE;
3859 /* update stored dts values */
3860 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3861 st->info->fps_first_dts = pkt->dts;
3862 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3864 st->info->fps_last_dts = pkt->dts;
3865 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3867 if (st->codec_info_nb_frames>1) {
3871 if (st->time_base.den > 0)
3872 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3873 if (st->avg_frame_rate.num > 0)
3874 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3877 && st->codec_info_nb_frames>30
3878 && st->info->fps_first_dts != AV_NOPTS_VALUE
3879 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3880 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3882 if (analyzed_all_streams) limit = max_analyze_duration;
3883 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3884 else limit = max_stream_analyze_duration;
3887 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3889 t, pkt->stream_index);
3890 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3891 av_packet_unref(&pkt1);
3894 if (pkt->duration) {
3895 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3896 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3898 st->info->codec_info_duration += pkt->duration;
3899 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3902 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3903 #if FF_API_R_FRAME_RATE
3904 ff_rfps_add_frame(ic, st, pkt->dts);
3906 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3907 st->info->frame_delay_evidence = 1;
3909 if (!st->internal->avctx->extradata) {
3910 ret = extract_extradata(st, pkt);
3912 goto unref_then_goto_end;
3915 /* If still no information, we try to open the codec and to
3916 * decompress the frame. We try to avoid that in most cases as
3917 * it takes longer and uses more memory. For MPEG-4, we need to
3918 * decompress for QuickTime.
3920 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3921 * least one frame of codec data, this makes sure the codec initializes
3922 * the channel configuration and does not only trust the values from
3924 try_decode_frame(ic, st, pkt,
3925 (options && i < orig_nb_streams) ? &options[i] : NULL);
3927 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3928 av_packet_unref(&pkt1);
3930 st->codec_info_nb_frames++;
3936 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3937 st = ic->streams[stream_index];
3938 avctx = st->internal->avctx;
3939 if (!has_codec_parameters(st, NULL)) {
3940 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3941 if (codec && !avctx->codec) {
3942 AVDictionary *opts = NULL;
3943 if (ic->codec_whitelist)
3944 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3945 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3946 av_log(ic, AV_LOG_WARNING,
3947 "Failed to open codec in %s\n",__FUNCTION__);
3948 av_dict_free(&opts);
3952 // EOF already reached while reading the stream above.
3953 // So continue with reoordering DTS with whatever delay we have.
3954 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3955 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3961 AVPacket empty_pkt = { 0 };
3963 av_init_packet(&empty_pkt);
3965 for (i = 0; i < ic->nb_streams; i++) {
3967 st = ic->streams[i];
3969 /* flush the decoders */
3970 if (st->info->found_decoder == 1) {
3972 err = try_decode_frame(ic, st, &empty_pkt,
3973 (options && i < orig_nb_streams)
3974 ? &options[i] : NULL);
3975 } while (err > 0 && !has_codec_parameters(st, NULL));
3978 av_log(ic, AV_LOG_INFO,
3979 "decoding for stream %d failed\n", st->index);
3985 ff_rfps_calculate(ic);
3987 for (i = 0; i < ic->nb_streams; i++) {
3988 st = ic->streams[i];
3989 avctx = st->internal->avctx;
3990 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3991 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3992 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3993 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3994 avctx->codec_tag= tag;
3997 /* estimate average framerate if not set by demuxer */
3998 if (st->info->codec_info_duration_fields &&
3999 !st->avg_frame_rate.num &&
4000 st->info->codec_info_duration) {
4002 double best_error = 0.01;
4003 AVRational codec_frame_rate = avctx->framerate;
4005 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4006 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4007 st->info->codec_info_duration < 0)
4009 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4010 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4011 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4013 /* Round guessed framerate to a "standard" framerate if it's
4014 * within 1% of the original estimate. */
4015 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4016 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4017 double error = fabs(av_q2d(st->avg_frame_rate) /
4018 av_q2d(std_fps) - 1);
4020 if (error < best_error) {
4022 best_fps = std_fps.num;
4025 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4026 error = fabs(av_q2d(codec_frame_rate) /
4027 av_q2d(std_fps) - 1);
4028 if (error < best_error) {
4030 best_fps = std_fps.num;
4035 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4036 best_fps, 12 * 1001, INT_MAX);
4039 if (!st->r_frame_rate.num) {
4040 if ( avctx->time_base.den * (int64_t) st->time_base.num
4041 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4042 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4043 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4045 st->r_frame_rate.num = st->time_base.den;
4046 st->r_frame_rate.den = st->time_base.num;
4049 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4050 AVRational hw_ratio = { avctx->height, avctx->width };
4051 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4054 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4055 if (!avctx->bits_per_coded_sample)
4056 avctx->bits_per_coded_sample =
4057 av_get_bits_per_sample(avctx->codec_id);
4058 // set stream disposition based on audio service type
4059 switch (avctx->audio_service_type) {
4060 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4061 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4063 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4064 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4066 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4067 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4069 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4070 st->disposition = AV_DISPOSITION_COMMENT;
4072 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4073 st->disposition = AV_DISPOSITION_KARAOKE;
4080 estimate_timings(ic, old_offset);
4082 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4084 if (ret >= 0 && ic->nb_streams)
4085 /* We could not have all the codec parameters before EOF. */
4087 for (i = 0; i < ic->nb_streams; i++) {
4089 st = ic->streams[i];
4091 /* if no packet was ever seen, update context now for has_codec_parameters */
4092 if (!st->internal->avctx_inited) {
4093 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4094 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4095 st->codecpar->format = st->internal->avctx->sample_fmt;
4096 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4098 goto find_stream_info_err;
4100 if (!has_codec_parameters(st, &errmsg)) {
4102 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4103 av_log(ic, AV_LOG_WARNING,
4104 "Could not find codec parameters for stream %d (%s): %s\n"
4105 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4112 compute_chapters_end(ic);
4114 /* update the stream parameters from the internal codec contexts */
4115 for (i = 0; i < ic->nb_streams; i++) {
4116 st = ic->streams[i];
4118 if (st->internal->avctx_inited) {
4119 int orig_w = st->codecpar->width;
4120 int orig_h = st->codecpar->height;
4121 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4123 goto find_stream_info_err;
4125 // The decoder might reduce the video size by the lowres factor.
4126 if (st->internal->avctx->lowres && orig_w) {
4127 st->codecpar->width = orig_w;
4128 st->codecpar->height = orig_h;
4133 #if FF_API_LAVF_AVCTX
4134 FF_DISABLE_DEPRECATION_WARNINGS
4135 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4137 goto find_stream_info_err;
4140 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4141 // by the lowres factor.
4142 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4143 st->codec->lowres = st->internal->avctx->lowres;
4144 st->codec->width = st->internal->avctx->width;
4145 st->codec->height = st->internal->avctx->height;
4149 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4150 st->codec->time_base = st->internal->avctx->time_base;
4151 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4153 st->codec->framerate = st->avg_frame_rate;
4155 if (st->internal->avctx->subtitle_header) {
4156 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4157 if (!st->codec->subtitle_header)
4158 goto find_stream_info_err;
4159 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4160 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4161 st->codec->subtitle_header_size);
4164 // Fields unavailable in AVCodecParameters
4165 st->codec->coded_width = st->internal->avctx->coded_width;
4166 st->codec->coded_height = st->internal->avctx->coded_height;
4167 st->codec->properties = st->internal->avctx->properties;
4168 FF_ENABLE_DEPRECATION_WARNINGS
4171 st->internal->avctx_inited = 0;
4174 find_stream_info_err:
4175 for (i = 0; i < ic->nb_streams; i++) {
4176 st = ic->streams[i];
4178 av_freep(&st->info->duration_error);
4179 avcodec_close(ic->streams[i]->internal->avctx);
4180 av_freep(&ic->streams[i]->info);
4181 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4182 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4185 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4186 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4189 unref_then_goto_end:
4190 av_packet_unref(&pkt1);
4191 goto find_stream_info_err;
4194 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4198 for (i = 0; i < ic->nb_programs; i++) {
4199 if (ic->programs[i] == last) {
4203 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4204 if (ic->programs[i]->stream_index[j] == s)
4205 return ic->programs[i];
4211 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4212 int wanted_stream_nb, int related_stream,
4213 AVCodec **decoder_ret, int flags)
4215 int i, nb_streams = ic->nb_streams;
4216 int ret = AVERROR_STREAM_NOT_FOUND;
4217 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4218 int count, multiframe, disposition;
4219 int64_t best_bitrate = -1;
4221 unsigned *program = NULL;
4222 const AVCodec *decoder = NULL, *best_decoder = NULL;
4224 if (related_stream >= 0 && wanted_stream_nb < 0) {
4225 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4227 program = p->stream_index;
4228 nb_streams = p->nb_stream_indexes;
4231 for (i = 0; i < nb_streams; i++) {
4232 int real_stream_index = program ? program[i] : i;
4233 AVStream *st = ic->streams[real_stream_index];
4234 AVCodecParameters *par = st->codecpar;
4235 if (par->codec_type != type)
4237 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4239 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4242 decoder = find_decoder(ic, st, par->codec_id);
4245 ret = AVERROR_DECODER_NOT_FOUND;
4249 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4250 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4251 count = st->codec_info_nb_frames;
4252 bitrate = par->bit_rate;
4253 multiframe = FFMIN(5, count);
4254 if ((best_disposition > disposition) ||
4255 (best_disposition == disposition && best_multiframe > multiframe) ||
4256 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4257 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4259 best_disposition = disposition;
4261 best_bitrate = bitrate;
4262 best_multiframe = multiframe;
4263 ret = real_stream_index;
4264 best_decoder = decoder;
4265 if (program && i == nb_streams - 1 && ret < 0) {
4267 nb_streams = ic->nb_streams;
4268 /* no related stream found, try again with everything */
4273 *decoder_ret = (AVCodec*)best_decoder;
4277 /*******************************************************/
4279 int av_read_play(AVFormatContext *s)
4281 if (s->iformat->read_play)
4282 return s->iformat->read_play(s);
4284 return avio_pause(s->pb, 0);
4285 return AVERROR(ENOSYS);
4288 int av_read_pause(AVFormatContext *s)
4290 if (s->iformat->read_pause)
4291 return s->iformat->read_pause(s);
4293 return avio_pause(s->pb, 1);
4294 return AVERROR(ENOSYS);
4297 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4302 dst->time_base = src->time_base;
4303 dst->nb_frames = src->nb_frames;
4304 dst->disposition = src->disposition;
4305 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4306 dst->avg_frame_rate = src->avg_frame_rate;
4307 dst->r_frame_rate = src->r_frame_rate;
4309 av_dict_free(&dst->metadata);
4310 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4314 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4318 /* Free existing side data*/
4319 for (i = 0; i < dst->nb_side_data; i++)
4320 av_free(dst->side_data[i].data);
4321 av_freep(&dst->side_data);
4322 dst->nb_side_data = 0;
4324 /* Copy side data if present */
4325 if (src->nb_side_data) {
4326 dst->side_data = av_mallocz_array(src->nb_side_data,
4327 sizeof(AVPacketSideData));
4328 if (!dst->side_data)
4329 return AVERROR(ENOMEM);
4330 dst->nb_side_data = src->nb_side_data;
4332 for (i = 0; i < src->nb_side_data; i++) {
4333 uint8_t *data = av_memdup(src->side_data[i].data,
4334 src->side_data[i].size);
4336 return AVERROR(ENOMEM);
4337 dst->side_data[i].type = src->side_data[i].type;
4338 dst->side_data[i].size = src->side_data[i].size;
4339 dst->side_data[i].data = data;
4343 #if FF_API_LAVF_FFSERVER
4344 FF_DISABLE_DEPRECATION_WARNINGS
4345 av_freep(&dst->recommended_encoder_configuration);
4346 if (src->recommended_encoder_configuration) {
4347 const char *conf_str = src->recommended_encoder_configuration;
4348 dst->recommended_encoder_configuration = av_strdup(conf_str);
4349 if (!dst->recommended_encoder_configuration)
4350 return AVERROR(ENOMEM);
4352 FF_ENABLE_DEPRECATION_WARNINGS
4358 static void free_stream(AVStream **pst)
4360 AVStream *st = *pst;
4366 for (i = 0; i < st->nb_side_data; i++)
4367 av_freep(&st->side_data[i].data);
4368 av_freep(&st->side_data);
4371 av_parser_close(st->parser);
4373 if (st->attached_pic.data)
4374 av_packet_unref(&st->attached_pic);
4377 avcodec_free_context(&st->internal->avctx);
4378 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4379 av_bsf_free(&st->internal->bsfcs[i]);
4380 av_freep(&st->internal->bsfcs);
4382 av_freep(&st->internal->priv_pts);
4383 av_bsf_free(&st->internal->extract_extradata.bsf);
4384 av_packet_free(&st->internal->extract_extradata.pkt);
4386 av_freep(&st->internal);
4388 av_dict_free(&st->metadata);
4389 avcodec_parameters_free(&st->codecpar);
4390 av_freep(&st->probe_data.buf);
4391 av_freep(&st->index_entries);
4392 #if FF_API_LAVF_AVCTX
4393 FF_DISABLE_DEPRECATION_WARNINGS
4394 avcodec_free_context(&st->codec);
4395 FF_ENABLE_DEPRECATION_WARNINGS
4397 av_freep(&st->priv_data);
4399 av_freep(&st->info->duration_error);
4400 av_freep(&st->info);
4401 #if FF_API_LAVF_FFSERVER
4402 FF_DISABLE_DEPRECATION_WARNINGS
4403 av_freep(&st->recommended_encoder_configuration);
4404 FF_ENABLE_DEPRECATION_WARNINGS
4410 void ff_free_stream(AVFormatContext *s, AVStream *st)
4412 av_assert0(s->nb_streams>0);
4413 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4415 free_stream(&s->streams[ --s->nb_streams ]);
4418 void avformat_free_context(AVFormatContext *s)
4426 if (s->iformat && s->iformat->priv_class && s->priv_data)
4427 av_opt_free(s->priv_data);
4428 if (s->oformat && s->oformat->priv_class && s->priv_data)
4429 av_opt_free(s->priv_data);
4431 for (i = s->nb_streams - 1; i >= 0; i--)
4432 ff_free_stream(s, s->streams[i]);
4435 for (i = s->nb_programs - 1; i >= 0; i--) {
4436 av_dict_free(&s->programs[i]->metadata);
4437 av_freep(&s->programs[i]->stream_index);
4438 av_freep(&s->programs[i]);
4440 av_freep(&s->programs);
4441 av_freep(&s->priv_data);
4442 while (s->nb_chapters--) {
4443 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4444 av_freep(&s->chapters[s->nb_chapters]);
4446 av_freep(&s->chapters);
4447 av_dict_free(&s->metadata);
4448 av_dict_free(&s->internal->id3v2_meta);
4449 av_freep(&s->streams);
4450 flush_packet_queue(s);
4451 av_freep(&s->internal);
4456 void avformat_close_input(AVFormatContext **ps)
4467 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4468 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4471 flush_packet_queue(s);
4474 if (s->iformat->read_close)
4475 s->iformat->read_close(s);
4477 avformat_free_context(s);
4484 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4490 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4491 if (s->max_streams < INT_MAX/sizeof(*streams))
4492 av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter (%d), see the documentation if you wish to increase it\n", s->max_streams);
4495 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4498 s->streams = streams;
4500 st = av_mallocz(sizeof(AVStream));
4503 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4507 st->info->last_dts = AV_NOPTS_VALUE;
4509 #if FF_API_LAVF_AVCTX
4510 FF_DISABLE_DEPRECATION_WARNINGS
4511 st->codec = avcodec_alloc_context3(c);
4517 FF_ENABLE_DEPRECATION_WARNINGS
4520 st->internal = av_mallocz(sizeof(*st->internal));
4524 st->codecpar = avcodec_parameters_alloc();
4528 st->internal->avctx = avcodec_alloc_context3(NULL);
4529 if (!st->internal->avctx)
4533 #if FF_API_LAVF_AVCTX
4534 FF_DISABLE_DEPRECATION_WARNINGS
4535 /* no default bitrate if decoding */
4536 st->codec->bit_rate = 0;
4537 FF_ENABLE_DEPRECATION_WARNINGS
4540 /* default pts setting is MPEG-like */
4541 avpriv_set_pts_info(st, 33, 1, 90000);
4542 /* we set the current DTS to 0 so that formats without any timestamps
4543 * but durations get some timestamps, formats with some unknown
4544 * timestamps have their first few packets buffered and the
4545 * timestamps corrected before they are returned to the user */
4546 st->cur_dts = RELATIVE_TS_BASE;
4548 st->cur_dts = AV_NOPTS_VALUE;
4551 st->index = s->nb_streams;
4552 st->start_time = AV_NOPTS_VALUE;
4553 st->duration = AV_NOPTS_VALUE;
4554 st->first_dts = AV_NOPTS_VALUE;
4555 st->probe_packets = MAX_PROBE_PACKETS;
4556 st->pts_wrap_reference = AV_NOPTS_VALUE;
4557 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4559 st->last_IP_pts = AV_NOPTS_VALUE;
4560 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4561 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4562 st->pts_buffer[i] = AV_NOPTS_VALUE;
4564 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4566 #if FF_API_R_FRAME_RATE
4567 st->info->last_dts = AV_NOPTS_VALUE;
4569 st->info->fps_first_dts = AV_NOPTS_VALUE;
4570 st->info->fps_last_dts = AV_NOPTS_VALUE;
4572 st->inject_global_side_data = s->internal->inject_global_side_data;
4574 st->internal->need_context_update = 1;
4576 s->streams[s->nb_streams++] = st;
4583 AVProgram *av_new_program(AVFormatContext *ac, int id)
4585 AVProgram *program = NULL;
4588 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4590 for (i = 0; i < ac->nb_programs; i++)
4591 if (ac->programs[i]->id == id)
4592 program = ac->programs[i];
4595 program = av_mallocz(sizeof(AVProgram));
4598 dynarray_add(&ac->programs, &ac->nb_programs, program);
4599 program->discard = AVDISCARD_NONE;
4600 program->pmt_version = -1;
4603 program->pts_wrap_reference = AV_NOPTS_VALUE;
4604 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4606 program->start_time =
4607 program->end_time = AV_NOPTS_VALUE;
4612 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4613 int64_t start, int64_t end, const char *title)
4615 AVChapter *chapter = NULL;
4618 if (end != AV_NOPTS_VALUE && start > end) {
4619 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4623 for (i = 0; i < s->nb_chapters; i++)
4624 if (s->chapters[i]->id == id)
4625 chapter = s->chapters[i];
4628 chapter = av_mallocz(sizeof(AVChapter));
4631 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4633 av_dict_set(&chapter->metadata, "title", title, 0);
4635 chapter->time_base = time_base;
4636 chapter->start = start;
4642 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4645 AVProgram *program = NULL;
4648 if (idx >= ac->nb_streams) {
4649 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4653 for (i = 0; i < ac->nb_programs; i++) {
4654 if (ac->programs[i]->id != progid)
4656 program = ac->programs[i];
4657 for (j = 0; j < program->nb_stream_indexes; j++)
4658 if (program->stream_index[j] == idx)
4661 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4664 program->stream_index = tmp;
4665 program->stream_index[program->nb_stream_indexes++] = idx;
4670 uint64_t ff_ntp_time(void)
4672 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4675 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4677 uint64_t ntp_ts, frac_part, sec;
4680 //current ntp time in seconds and micro seconds
4681 sec = ntp_time_us / 1000000;
4682 usec = ntp_time_us % 1000000;
4684 //encoding in ntp timestamp format
4685 frac_part = usec * 0xFFFFFFFFULL;
4686 frac_part /= 1000000;
4688 if (sec > 0xFFFFFFFFULL)
4689 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4692 ntp_ts |= frac_part;
4697 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4700 char *q, buf1[20], c;
4701 int nd, len, percentd_found;
4713 while (av_isdigit(*p))
4714 nd = nd * 10 + *p++ - '0';
4716 } while (av_isdigit(c));
4722 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4727 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4729 if ((q - buf + len) > buf_size - 1)
4731 memcpy(q, buf1, len);
4739 if ((q - buf) < buf_size - 1)
4743 if (!percentd_found)
4752 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4754 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4757 void av_url_split(char *proto, int proto_size,
4758 char *authorization, int authorization_size,
4759 char *hostname, int hostname_size,
4760 int *port_ptr, char *path, int path_size, const char *url)
4762 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4768 if (authorization_size > 0)
4769 authorization[0] = 0;
4770 if (hostname_size > 0)
4775 /* parse protocol */
4776 if ((p = strchr(url, ':'))) {
4777 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4784 /* no protocol means plain filename */
4785 av_strlcpy(path, url, path_size);
4789 /* separate path from hostname */
4790 ls = strchr(p, '/');
4791 ls2 = strchr(p, '?');
4795 ls = FFMIN(ls, ls2);
4797 av_strlcpy(path, ls, path_size);
4799 ls = &p[strlen(p)]; // XXX
4801 /* the rest is hostname, use that to parse auth/port */
4803 /* authorization (user[:pass]@hostname) */
4805 while ((at = strchr(p, '@')) && at < ls) {
4806 av_strlcpy(authorization, at2,
4807 FFMIN(authorization_size, at + 1 - at2));
4808 p = at + 1; /* skip '@' */
4811 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4813 av_strlcpy(hostname, p + 1,
4814 FFMIN(hostname_size, brk - p));
4815 if (brk[1] == ':' && port_ptr)
4816 *port_ptr = atoi(brk + 2);
4817 } else if ((col = strchr(p, ':')) && col < ls) {
4818 av_strlcpy(hostname, p,
4819 FFMIN(col + 1 - p, hostname_size));
4821 *port_ptr = atoi(col + 1);
4823 av_strlcpy(hostname, p,
4824 FFMIN(ls + 1 - p, hostname_size));
4828 int ff_mkdir_p(const char *path)
4831 char *temp = av_strdup(path);
4835 if (!path || !temp) {
4839 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4841 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4845 for ( ; *pos != '\0'; ++pos) {
4846 if (*pos == '/' || *pos == '\\') {
4849 ret = mkdir(temp, 0755);
4854 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4855 ret = mkdir(temp, 0755);
4862 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4865 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4868 'C', 'D', 'E', 'F' };
4869 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4872 'c', 'd', 'e', 'f' };
4873 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4875 for (i = 0; i < s; i++) {
4876 buff[i * 2] = hex_table[src[i] >> 4];
4877 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4883 int ff_hex_to_data(uint8_t *data, const char *p)
4890 p += strspn(p, SPACE_CHARS);
4893 c = av_toupper((unsigned char) *p++);
4894 if (c >= '0' && c <= '9')
4896 else if (c >= 'A' && c <= 'F')
4911 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4912 unsigned int pts_num, unsigned int pts_den)
4915 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4916 if (new_tb.num != pts_num)
4917 av_log(NULL, AV_LOG_DEBUG,
4918 "st:%d removing common factor %d from timebase\n",
4919 s->index, pts_num / new_tb.num);
4921 av_log(NULL, AV_LOG_WARNING,
4922 "st:%d has too large timebase, reducing\n", s->index);
4924 if (new_tb.num <= 0 || new_tb.den <= 0) {
4925 av_log(NULL, AV_LOG_ERROR,
4926 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4927 new_tb.num, new_tb.den,
4931 s->time_base = new_tb;
4932 #if FF_API_LAVF_AVCTX
4933 FF_DISABLE_DEPRECATION_WARNINGS
4934 s->codec->pkt_timebase = new_tb;
4935 FF_ENABLE_DEPRECATION_WARNINGS
4937 s->internal->avctx->pkt_timebase = new_tb;
4938 s->pts_wrap_bits = pts_wrap_bits;
4941 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4944 const char *ptr = str;
4946 /* Parse key=value pairs. */
4949 char *dest = NULL, *dest_end;
4950 int key_len, dest_len = 0;
4952 /* Skip whitespace and potential commas. */
4953 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4960 if (!(ptr = strchr(key, '=')))
4963 key_len = ptr - key;
4965 callback_get_buf(context, key, key_len, &dest, &dest_len);
4966 dest_end = dest + dest_len - 1;
4970 while (*ptr && *ptr != '\"') {
4974 if (dest && dest < dest_end)
4978 if (dest && dest < dest_end)
4986 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4987 if (dest && dest < dest_end)
4995 int ff_find_stream_index(AVFormatContext *s, int id)
4998 for (i = 0; i < s->nb_streams; i++)
4999 if (s->streams[i]->id == id)
5004 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
5008 unsigned int codec_tag;
5009 if (ofmt->query_codec)
5010 return ofmt->query_codec(codec_id, std_compliance);
5011 else if (ofmt->codec_tag)
5012 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
5013 else if (codec_id == ofmt->video_codec ||
5014 codec_id == ofmt->audio_codec ||
5015 codec_id == ofmt->subtitle_codec ||
5016 codec_id == ofmt->data_codec)
5019 return AVERROR_PATCHWELCOME;
5022 int avformat_network_init(void)
5026 if ((ret = ff_network_init()) < 0)
5028 if ((ret = ff_tls_init()) < 0)
5034 int avformat_network_deinit(void)
5043 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5044 uint64_t channel_layout, int32_t sample_rate,
5045 int32_t width, int32_t height)
5051 return AVERROR(EINVAL);
5054 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5056 if (channel_layout) {
5058 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5062 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5064 if (width || height) {
5066 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5068 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5070 return AVERROR(ENOMEM);
5071 bytestream_put_le32(&data, flags);
5073 bytestream_put_le32(&data, channels);
5075 bytestream_put_le64(&data, channel_layout);
5077 bytestream_put_le32(&data, sample_rate);
5078 if (width || height) {
5079 bytestream_put_le32(&data, width);
5080 bytestream_put_le32(&data, height);
5085 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5087 AVRational undef = {0, 1};
5088 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5089 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5090 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5092 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5093 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5094 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5095 stream_sample_aspect_ratio = undef;
5097 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5098 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5099 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5100 frame_sample_aspect_ratio = undef;
5102 if (stream_sample_aspect_ratio.num)
5103 return stream_sample_aspect_ratio;
5105 return frame_sample_aspect_ratio;
5108 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5110 AVRational fr = st->r_frame_rate;
5111 AVRational codec_fr = st->internal->avctx->framerate;
5112 AVRational avg_fr = st->avg_frame_rate;
5114 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5115 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5120 if (st->internal->avctx->ticks_per_frame > 1) {
5121 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5122 (fr.num == 0 || av_q2d(codec_fr) < av_q2d(fr)*0.7 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1))
5130 * Matches a stream specifier (but ignores requested index).
5132 * @param indexptr set to point to the requested stream index if there is one
5134 * @return <0 on error
5135 * 0 if st is NOT a matching stream
5136 * >0 if st is a matching stream
5138 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5139 const char *spec, const char **indexptr, AVProgram **p)
5141 int match = 1; /* Stores if the specifier matches so far. */
5143 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5147 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5148 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5149 enum AVMediaType type;
5153 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5154 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5155 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5156 case 'd': type = AVMEDIA_TYPE_DATA; break;
5157 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5158 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5159 default: av_assert0(0);
5161 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5162 return AVERROR(EINVAL);
5164 #if FF_API_LAVF_AVCTX
5165 FF_DISABLE_DEPRECATION_WARNINGS
5166 if (type != st->codecpar->codec_type
5167 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5169 FF_ENABLE_DEPRECATION_WARNINGS
5171 if (type != st->codecpar->codec_type)
5174 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5176 } else if (*spec == 'p' && *(spec + 1) == ':') {
5181 prog_id = strtol(spec, &endptr, 0);
5182 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5183 if (spec == endptr || (*endptr && *endptr++ != ':'))
5184 return AVERROR(EINVAL);
5187 for (i = 0; i < s->nb_programs; i++) {
5188 if (s->programs[i]->id != prog_id)
5191 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5192 if (st->index == s->programs[i]->stream_index[j]) {
5195 *p = s->programs[i];
5204 } else if (*spec == '#' ||
5205 (*spec == 'i' && *(spec + 1) == ':')) {
5208 spec += 1 + (*spec == 'i');
5209 stream_id = strtol(spec, &endptr, 0);
5210 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5211 return AVERROR(EINVAL);
5212 return match && (stream_id == st->id);
5213 } else if (*spec == 'm' && *(spec + 1) == ':') {
5214 AVDictionaryEntry *tag;
5220 val = strchr(spec, ':');
5222 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5224 return AVERROR(ENOMEM);
5226 tag = av_dict_get(st->metadata, key, NULL, 0);
5228 if (!val || !strcmp(tag->value, val + 1))
5237 return match && ret;
5238 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5239 AVCodecParameters *par = st->codecpar;
5240 #if FF_API_LAVF_AVCTX
5241 FF_DISABLE_DEPRECATION_WARNINGS
5242 AVCodecContext *codec = st->codec;
5243 FF_ENABLE_DEPRECATION_WARNINGS
5246 switch (par->codec_type) {
5247 case AVMEDIA_TYPE_AUDIO:
5248 val = par->sample_rate && par->channels;
5249 #if FF_API_LAVF_AVCTX
5250 val = val || (codec->sample_rate && codec->channels);
5252 if (par->format == AV_SAMPLE_FMT_NONE
5253 #if FF_API_LAVF_AVCTX
5254 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5259 case AVMEDIA_TYPE_VIDEO:
5260 val = par->width && par->height;
5261 #if FF_API_LAVF_AVCTX
5262 val = val || (codec->width && codec->height);
5264 if (par->format == AV_PIX_FMT_NONE
5265 #if FF_API_LAVF_AVCTX
5266 && codec->pix_fmt == AV_PIX_FMT_NONE
5271 case AVMEDIA_TYPE_UNKNOWN:
5278 #if FF_API_LAVF_AVCTX
5279 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5281 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5284 return AVERROR(EINVAL);
5292 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5297 const char *indexptr = NULL;
5298 AVProgram *p = NULL;
5301 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5308 index = strtol(indexptr, &endptr, 0);
5309 if (*endptr) { /* We can't have anything after the requested index. */
5310 ret = AVERROR(EINVAL);
5314 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5315 if (spec == indexptr)
5316 return (index == st->index);
5318 /* If we requested a matching stream index, we have to ensure st is that. */
5319 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5320 for (int i = 0; i < nb_streams && index >= 0; i++) {
5321 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5322 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5325 if (ret > 0 && index-- == 0 && st == candidate)
5331 if (ret == AVERROR(EINVAL))
5332 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5336 int ff_generate_avci_extradata(AVStream *st)
5338 static const uint8_t avci100_1080p_extradata[] = {
5340 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5341 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5342 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5343 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5344 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5345 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5346 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5347 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5348 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5350 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5353 static const uint8_t avci100_1080i_extradata[] = {
5355 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5356 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5357 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5358 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5359 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5360 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5361 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5362 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5363 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5364 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5365 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5367 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5370 static const uint8_t avci50_1080p_extradata[] = {
5372 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5373 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5374 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5375 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5376 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5377 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5378 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5379 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5380 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5382 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5385 static const uint8_t avci50_1080i_extradata[] = {
5387 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5388 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5389 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5390 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5391 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5392 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5393 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5394 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5395 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5396 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5397 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5399 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5402 static const uint8_t avci100_720p_extradata[] = {
5404 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5405 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5406 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5407 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5408 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5409 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5410 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5411 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5412 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5413 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5415 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5418 static const uint8_t avci50_720p_extradata[] = {
5420 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5421 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5422 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5423 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5424 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5425 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5426 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5427 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5428 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5430 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5434 const uint8_t *data = NULL;
5437 if (st->codecpar->width == 1920) {
5438 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5439 data = avci100_1080p_extradata;
5440 size = sizeof(avci100_1080p_extradata);
5442 data = avci100_1080i_extradata;
5443 size = sizeof(avci100_1080i_extradata);
5445 } else if (st->codecpar->width == 1440) {
5446 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5447 data = avci50_1080p_extradata;
5448 size = sizeof(avci50_1080p_extradata);
5450 data = avci50_1080i_extradata;
5451 size = sizeof(avci50_1080i_extradata);
5453 } else if (st->codecpar->width == 1280) {
5454 data = avci100_720p_extradata;
5455 size = sizeof(avci100_720p_extradata);
5456 } else if (st->codecpar->width == 960) {
5457 data = avci50_720p_extradata;
5458 size = sizeof(avci50_720p_extradata);
5464 av_freep(&st->codecpar->extradata);
5465 if (ff_alloc_extradata(st->codecpar, size))
5466 return AVERROR(ENOMEM);
5467 memcpy(st->codecpar->extradata, data, size);
5472 uint8_t *av_stream_get_side_data(const AVStream *st,
5473 enum AVPacketSideDataType type, int *size)
5477 for (i = 0; i < st->nb_side_data; i++) {
5478 if (st->side_data[i].type == type) {
5480 *size = st->side_data[i].size;
5481 return st->side_data[i].data;
5487 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5488 uint8_t *data, size_t size)
5490 AVPacketSideData *sd, *tmp;
5493 for (i = 0; i < st->nb_side_data; i++) {
5494 sd = &st->side_data[i];
5496 if (sd->type == type) {
5497 av_freep(&sd->data);
5504 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5505 return AVERROR(ERANGE);
5507 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5509 return AVERROR(ENOMEM);
5512 st->side_data = tmp;
5515 sd = &st->side_data[st->nb_side_data - 1];
5523 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5527 uint8_t *data = av_malloc(size);
5532 ret = av_stream_add_side_data(st, type, data, size);
5541 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5544 const AVBitStreamFilter *bsf;
5546 AVCodecParameters *in_par;
5548 if (!(bsf = av_bsf_get_by_name(name))) {
5549 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5550 return AVERROR_BSF_NOT_FOUND;
5553 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5556 if (st->internal->nb_bsfcs) {
5557 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5558 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5560 in_par = st->codecpar;
5561 bsfc->time_base_in = st->time_base;
5564 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5569 if (args && bsfc->filter->priv_class) {
5570 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5571 const char * shorthand[2] = {NULL};
5574 shorthand[0] = opt->name;
5576 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5582 if ((ret = av_bsf_init(bsfc)) < 0) {
5587 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5592 av_log(NULL, AV_LOG_VERBOSE,
5593 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5594 name, args ? args : "");
5599 FF_DISABLE_DEPRECATION_WARNINGS
5600 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5601 AVBitStreamFilterContext *bsfc)
5605 AVPacket new_pkt = *pkt;
5606 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5607 &new_pkt.data, &new_pkt.size,
5608 pkt->data, pkt->size,
5609 pkt->flags & AV_PKT_FLAG_KEY);
5610 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5611 av_packet_unref(pkt);
5612 memset(pkt, 0, sizeof(*pkt));
5615 if(a == 0 && new_pkt.data != pkt->data) {
5616 uint8_t *t = av_malloc(new_pkt.size + AV_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
5618 memcpy(t, new_pkt.data, new_pkt.size);
5619 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5624 a = AVERROR(ENOMEM);
5628 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5629 av_buffer_default_free, NULL, 0);
5631 pkt->side_data = NULL;
5632 pkt->side_data_elems = 0;
5633 av_packet_unref(pkt);
5635 av_freep(&new_pkt.data);
5636 a = AVERROR(ENOMEM);
5640 av_log(codec, AV_LOG_ERROR,
5641 "Failed to open bitstream filter %s for stream %d with codec %s",
5642 bsfc->filter->name, pkt->stream_index,
5643 codec->codec ? codec->codec->name : "copy");
5653 FF_ENABLE_DEPRECATION_WARNINGS
5656 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5659 return AVERROR(EINVAL);
5661 if (!(s->oformat->flags & AVFMT_NOFILE))
5662 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5666 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5669 s->io_close(s, *pb);
5673 int ff_is_http_proto(char *filename) {
5674 const char *proto = avio_find_protocol_name(filename);
5675 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5678 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5680 AVDictionaryEntry *entry;
5681 int64_t parsed_timestamp;
5683 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5684 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5685 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5688 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5695 int ff_standardize_creation_time(AVFormatContext *s)
5698 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5700 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5704 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5709 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5711 if (size != AVPALETTE_SIZE) {
5712 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5713 return AVERROR_INVALIDDATA;
5715 memcpy(palette, side_data, AVPALETTE_SIZE);
5719 if (ret == CONTAINS_PAL) {
5721 for (i = 0; i < AVPALETTE_COUNT; i++)
5722 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5729 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5734 ret = av_bprint_finalize(buf, &str);
5737 if (!av_bprint_is_complete(buf)) {
5739 return AVERROR(ENOMEM);
5742 par->extradata = str;
5743 /* Note: the string is NUL terminated (so extradata can be read as a
5744 * string), but the ending character is not accounted in the size (in
5745 * binary formats you are likely not supposed to mux that character). When
5746 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5748 par->extradata_size = buf->len;
5752 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5753 AVStream *ost, const AVStream *ist,
5754 enum AVTimebaseSource copy_tb)
5756 //TODO: use [io]st->internal->avctx
5757 const AVCodecContext *dec_ctx = ist->codec;
5758 AVCodecContext *enc_ctx = ost->codec;
5760 enc_ctx->time_base = ist->time_base;
5762 * Avi is a special case here because it supports variable fps but
5763 * having the fps and timebase differe significantly adds quite some
5766 if (!strcmp(ofmt->name, "avi")) {
5767 #if FF_API_R_FRAME_RATE
5768 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5769 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5770 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5771 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5772 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5773 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5774 enc_ctx->time_base.num = ist->r_frame_rate.den;
5775 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5776 enc_ctx->ticks_per_frame = 2;
5779 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5780 && av_q2d(ist->time_base) < 1.0/500
5781 || copy_tb == AVFMT_TBCF_DECODER) {
5782 enc_ctx->time_base = dec_ctx->time_base;
5783 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5784 enc_ctx->time_base.den *= 2;
5785 enc_ctx->ticks_per_frame = 2;
5787 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5788 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5789 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5790 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5791 && av_q2d(ist->time_base) < 1.0/500
5792 || copy_tb == AVFMT_TBCF_DECODER) {
5793 enc_ctx->time_base = dec_ctx->time_base;
5794 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5798 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5799 && dec_ctx->time_base.num < dec_ctx->time_base.den
5800 && dec_ctx->time_base.num > 0
5801 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5802 enc_ctx->time_base = dec_ctx->time_base;
5805 if (ost->avg_frame_rate.num)
5806 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5808 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5809 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5814 AVRational av_stream_get_codec_timebase(const AVStream *st)
5816 // See avformat_transfer_internal_stream_timing_info() TODO.
5817 #if FF_API_LAVF_AVCTX
5818 FF_DISABLE_DEPRECATION_WARNINGS
5819 return st->codec->time_base;
5820 FF_ENABLE_DEPRECATION_WARNINGS
5822 return st->internal->avctx->time_base;
5826 void ff_format_set_url(AVFormatContext *s, char *url)
5831 #if FF_API_FORMAT_FILENAME
5832 FF_DISABLE_DEPRECATION_WARNINGS
5833 av_strlcpy(s->filename, url, sizeof(s->filename));
5834 FF_ENABLE_DEPRECATION_WARNINGS