2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/thread.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
63 * various utility functions for use within FFmpeg
66 unsigned avformat_version(void)
68 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
69 return LIBAVFORMAT_VERSION_INT;
72 const char *avformat_configuration(void)
74 return FFMPEG_CONFIGURATION;
77 const char *avformat_license(void)
79 #define LICENSE_PREFIX "libavformat license: "
80 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
83 int ff_lock_avformat(void)
85 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
88 int ff_unlock_avformat(void)
90 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
93 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
95 static int is_relative(int64_t ts) {
96 return ts > (RELATIVE_TS_BASE - (1LL<<48));
100 * Wrap a given time stamp, if there is an indication for an overflow
103 * @param timestamp the time stamp to wrap
104 * @return resulting time stamp
106 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
108 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
109 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
110 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
111 timestamp < st->pts_wrap_reference)
112 return timestamp + (1ULL << st->pts_wrap_bits);
113 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
114 timestamp >= st->pts_wrap_reference)
115 return timestamp - (1ULL << st->pts_wrap_bits);
120 #if FF_API_FORMAT_GET_SET
121 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
122 #if FF_API_LAVF_FFSERVER
123 FF_DISABLE_DEPRECATION_WARNINGS
124 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
125 FF_ENABLE_DEPRECATION_WARNINGS
127 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
128 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
129 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
130 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
131 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
132 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
133 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
134 #if FF_API_OLD_OPEN_CALLBACKS
135 FF_DISABLE_DEPRECATION_WARNINGS
136 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
137 FF_ENABLE_DEPRECATION_WARNINGS
141 int64_t av_stream_get_end_pts(const AVStream *st)
143 if (st->internal->priv_pts) {
144 return st->internal->priv_pts->val;
146 return AV_NOPTS_VALUE;
149 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
154 void av_format_inject_global_side_data(AVFormatContext *s)
157 s->internal->inject_global_side_data = 1;
158 for (i = 0; i < s->nb_streams; i++) {
159 AVStream *st = s->streams[i];
160 st->inject_global_side_data = 1;
164 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
166 av_assert0(!dst->codec_whitelist &&
167 !dst->format_whitelist &&
168 !dst->protocol_whitelist &&
169 !dst->protocol_blacklist);
170 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
171 dst->format_whitelist = av_strdup(src->format_whitelist);
172 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
173 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
174 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 || (src-> format_whitelist && !dst-> format_whitelist)
176 || (src->protocol_whitelist && !dst->protocol_whitelist)
177 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
178 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
179 return AVERROR(ENOMEM);
184 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
186 #if FF_API_LAVF_AVCTX
187 FF_DISABLE_DEPRECATION_WARNINGS
188 if (st->codec->codec)
189 return st->codec->codec;
190 FF_ENABLE_DEPRECATION_WARNINGS
193 switch (st->codecpar->codec_type) {
194 case AVMEDIA_TYPE_VIDEO:
195 if (s->video_codec) return s->video_codec;
197 case AVMEDIA_TYPE_AUDIO:
198 if (s->audio_codec) return s->audio_codec;
200 case AVMEDIA_TYPE_SUBTITLE:
201 if (s->subtitle_codec) return s->subtitle_codec;
205 return avcodec_find_decoder(codec_id);
208 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
210 const AVCodec *codec;
212 #if CONFIG_H264_DECODER
213 /* Other parts of the code assume this decoder to be used for h264,
214 * so force it if possible. */
215 if (codec_id == AV_CODEC_ID_H264)
216 return avcodec_find_decoder_by_name("h264");
219 codec = find_decoder(s, st, codec_id);
223 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
224 const AVCodec *probe_codec = NULL;
225 while (probe_codec = av_codec_next(probe_codec)) {
226 if (probe_codec->id == codec_id &&
227 av_codec_is_decoder(probe_codec) &&
228 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
237 #if FF_API_FORMAT_GET_SET
238 int av_format_get_probe_score(const AVFormatContext *s)
240 return s->probe_score;
244 /* an arbitrarily chosen "sane" max packet size -- 50M */
245 #define SANE_CHUNK_SIZE (50000000)
247 int ffio_limit(AVIOContext *s, int size)
249 if (s->maxsize>= 0) {
250 int64_t remaining= s->maxsize - avio_tell(s);
251 if (remaining < size) {
252 int64_t newsize = avio_size(s);
253 if (!s->maxsize || s->maxsize<newsize)
254 s->maxsize = newsize - !newsize;
255 remaining= s->maxsize - avio_tell(s);
256 remaining= FFMAX(remaining, 0);
259 if (s->maxsize>= 0 && remaining+1 < size) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
267 /* Read the data in sane-sized chunks and append to pkt.
268 * Return the number of bytes read or an error. */
269 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
271 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
272 int orig_size = pkt->size;
276 int prev_size = pkt->size;
279 /* When the caller requests a lot of data, limit it to the amount
280 * left in file or SANE_CHUNK_SIZE when it is not known. */
282 if (read_size > SANE_CHUNK_SIZE/10) {
283 read_size = ffio_limit(s, read_size);
284 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
286 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
289 ret = av_grow_packet(pkt, read_size);
293 ret = avio_read(s, pkt->data + prev_size, read_size);
294 if (ret != read_size) {
295 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
302 pkt->flags |= AV_PKT_FLAG_CORRUPT;
306 av_packet_unref(pkt);
307 return pkt->size > orig_size ? pkt->size - orig_size : ret;
310 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
315 pkt->pos = avio_tell(s);
317 return append_packet_chunked(s, pkt, size);
320 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 return append_packet_chunked(s, pkt, size);
327 int av_filename_number_test(const char *filename)
331 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
334 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
337 static const struct {
340 enum AVMediaType type;
342 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
343 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
344 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
345 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
346 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
347 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
348 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
349 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
350 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
351 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
352 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
353 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
354 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
355 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
356 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
360 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
364 av_log(s, AV_LOG_DEBUG,
365 "Probe with size=%d, packets=%d detected %s with score=%d\n",
366 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
368 for (i = 0; fmt_id_type[i].name; i++) {
369 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
370 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
371 st->codecpar->sample_rate)
373 if (st->request_probe > score &&
374 st->codecpar->codec_id != fmt_id_type[i].id)
376 st->codecpar->codec_id = fmt_id_type[i].id;
377 st->codecpar->codec_type = fmt_id_type[i].type;
378 st->internal->need_context_update = 1;
379 #if FF_API_LAVF_AVCTX
380 FF_DISABLE_DEPRECATION_WARNINGS
381 st->codec->codec_type = st->codecpar->codec_type;
382 st->codec->codec_id = st->codecpar->codec_id;
383 FF_ENABLE_DEPRECATION_WARNINGS
392 /************************************************************/
393 /* input media file */
395 int av_demuxer_open(AVFormatContext *ic) {
398 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
399 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
400 return AVERROR(EINVAL);
403 if (ic->iformat->read_header) {
404 err = ic->iformat->read_header(ic);
409 if (ic->pb && !ic->internal->data_offset)
410 ic->internal->data_offset = avio_tell(ic->pb);
415 /* Open input file and probe the format if necessary. */
416 static int init_input(AVFormatContext *s, const char *filename,
417 AVDictionary **options)
420 AVProbeData pd = { filename, NULL, 0 };
421 int score = AVPROBE_SCORE_RETRY;
424 s->flags |= AVFMT_FLAG_CUSTOM_IO;
426 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
427 s, 0, s->format_probesize);
428 else if (s->iformat->flags & AVFMT_NOFILE)
429 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
430 "will be ignored with AVFMT_NOFILE format.\n");
434 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
435 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
438 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
443 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
444 s, 0, s->format_probesize);
447 int ff_packet_list_put(AVPacketList **packet_buffer,
448 AVPacketList **plast_pktl,
449 AVPacket *pkt, int flags)
451 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
455 return AVERROR(ENOMEM);
457 if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
458 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
463 // TODO: Adapt callers in this file so the line below can use
464 // av_packet_move_ref() to effectively move the reference
470 (*plast_pktl)->next = pktl;
472 *packet_buffer = pktl;
474 /* Add the packet in the buffered packet list. */
479 int avformat_queue_attached_pictures(AVFormatContext *s)
482 for (i = 0; i < s->nb_streams; i++)
483 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
484 s->streams[i]->discard < AVDISCARD_ALL) {
485 if (s->streams[i]->attached_pic.size <= 0) {
486 av_log(s, AV_LOG_WARNING,
487 "Attached picture on stream %d has invalid size, "
492 ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
493 &s->internal->raw_packet_buffer_end,
494 &s->streams[i]->attached_pic,
495 FF_PACKETLIST_FLAG_REF_PACKET);
502 static int update_stream_avctx(AVFormatContext *s)
505 for (i = 0; i < s->nb_streams; i++) {
506 AVStream *st = s->streams[i];
508 if (!st->internal->need_context_update)
511 /* close parser, because it depends on the codec */
512 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
513 av_parser_close(st->parser);
517 /* update internal codec context, for the parser */
518 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
522 #if FF_API_LAVF_AVCTX
523 FF_DISABLE_DEPRECATION_WARNINGS
524 /* update deprecated public codec context */
525 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
528 FF_ENABLE_DEPRECATION_WARNINGS
531 st->internal->need_context_update = 0;
537 int avformat_open_input(AVFormatContext **ps, const char *filename,
538 AVInputFormat *fmt, AVDictionary **options)
540 AVFormatContext *s = *ps;
542 AVDictionary *tmp = NULL;
543 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
545 if (!s && !(s = avformat_alloc_context()))
546 return AVERROR(ENOMEM);
548 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
549 return AVERROR(EINVAL);
555 av_dict_copy(&tmp, *options, 0);
557 if (s->pb) // must be before any goto fail
558 s->flags |= AVFMT_FLAG_CUSTOM_IO;
560 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
563 if (!(s->url = av_strdup(filename ? filename : ""))) {
564 ret = AVERROR(ENOMEM);
568 #if FF_API_FORMAT_FILENAME
569 FF_DISABLE_DEPRECATION_WARNINGS
570 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
571 FF_ENABLE_DEPRECATION_WARNINGS
573 if ((ret = init_input(s, filename, &tmp)) < 0)
575 s->probe_score = ret;
577 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
578 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
579 if (!s->protocol_whitelist) {
580 ret = AVERROR(ENOMEM);
585 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
586 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
587 if (!s->protocol_blacklist) {
588 ret = AVERROR(ENOMEM);
593 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
594 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
595 ret = AVERROR(EINVAL);
599 avio_skip(s->pb, s->skip_initial_bytes);
601 /* Check filename in case an image number is expected. */
602 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
603 if (!av_filename_number_test(filename)) {
604 ret = AVERROR(EINVAL);
609 s->duration = s->start_time = AV_NOPTS_VALUE;
611 /* Allocate private data. */
612 if (s->iformat->priv_data_size > 0) {
613 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
614 ret = AVERROR(ENOMEM);
617 if (s->iformat->priv_class) {
618 *(const AVClass **) s->priv_data = s->iformat->priv_class;
619 av_opt_set_defaults(s->priv_data);
620 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
625 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
627 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
630 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
631 if ((ret = s->iformat->read_header(s)) < 0)
635 s->metadata = s->internal->id3v2_meta;
636 s->internal->id3v2_meta = NULL;
637 } else if (s->internal->id3v2_meta) {
638 int level = AV_LOG_WARNING;
639 if (s->error_recognition & AV_EF_COMPLIANT)
640 level = AV_LOG_ERROR;
641 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
642 av_dict_free(&s->internal->id3v2_meta);
643 if (s->error_recognition & AV_EF_EXPLODE)
644 return AVERROR_INVALIDDATA;
647 if (id3v2_extra_meta) {
648 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
649 !strcmp(s->iformat->name, "tta")) {
650 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
652 if ((ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0)
654 if ((ret = ff_id3v2_parse_priv(s, &id3v2_extra_meta)) < 0)
657 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
659 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
661 if ((ret = avformat_queue_attached_pictures(s)) < 0)
664 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
665 s->internal->data_offset = avio_tell(s->pb);
667 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
669 update_stream_avctx(s);
671 for (i = 0; i < s->nb_streams; i++)
672 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
675 av_dict_free(options);
682 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
684 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
686 avformat_free_context(s);
691 /*******************************************************/
693 static void force_codec_ids(AVFormatContext *s, AVStream *st)
695 switch (st->codecpar->codec_type) {
696 case AVMEDIA_TYPE_VIDEO:
697 if (s->video_codec_id)
698 st->codecpar->codec_id = s->video_codec_id;
700 case AVMEDIA_TYPE_AUDIO:
701 if (s->audio_codec_id)
702 st->codecpar->codec_id = s->audio_codec_id;
704 case AVMEDIA_TYPE_SUBTITLE:
705 if (s->subtitle_codec_id)
706 st->codecpar->codec_id = s->subtitle_codec_id;
708 case AVMEDIA_TYPE_DATA:
709 if (s->data_codec_id)
710 st->codecpar->codec_id = s->data_codec_id;
715 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
717 if (st->request_probe>0) {
718 AVProbeData *pd = &st->probe_data;
720 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
724 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
726 av_log(s, AV_LOG_WARNING,
727 "Failed to reallocate probe buffer for stream %d\n",
732 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
733 pd->buf_size += pkt->size;
734 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
737 st->probe_packets = 0;
739 av_log(s, AV_LOG_WARNING,
740 "nothing to probe for stream %d\n", st->index);
744 end= s->internal->raw_packet_buffer_remaining_size <= 0
745 || st->probe_packets<= 0;
747 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
748 int score = set_codec_from_probe_data(s, st, pd);
749 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
753 st->request_probe = -1;
754 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
755 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
757 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
759 force_codec_ids(s, st);
765 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
767 int64_t ref = pkt->dts;
768 int i, pts_wrap_behavior;
769 int64_t pts_wrap_reference;
770 AVProgram *first_program;
772 if (ref == AV_NOPTS_VALUE)
774 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
776 ref &= (1LL << st->pts_wrap_bits)-1;
778 // reference time stamp should be 60 s before first time stamp
779 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
780 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
781 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
782 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
783 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
785 first_program = av_find_program_from_stream(s, NULL, stream_index);
787 if (!first_program) {
788 int default_stream_index = av_find_default_stream_index(s);
789 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
790 for (i = 0; i < s->nb_streams; i++) {
791 if (av_find_program_from_stream(s, NULL, i))
793 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
794 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
798 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
799 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
803 AVProgram *program = first_program;
805 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
806 pts_wrap_reference = program->pts_wrap_reference;
807 pts_wrap_behavior = program->pts_wrap_behavior;
810 program = av_find_program_from_stream(s, program, stream_index);
813 // update every program with differing pts_wrap_reference
814 program = first_program;
816 if (program->pts_wrap_reference != pts_wrap_reference) {
817 for (i = 0; i<program->nb_stream_indexes; i++) {
818 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
819 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
822 program->pts_wrap_reference = pts_wrap_reference;
823 program->pts_wrap_behavior = pts_wrap_behavior;
825 program = av_find_program_from_stream(s, program, stream_index);
831 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
837 AVPacketList *pktl = s->internal->raw_packet_buffer;
841 st = s->streams[pkt->stream_index];
842 if (s->internal->raw_packet_buffer_remaining_size <= 0)
843 if ((err = probe_codec(s, st, NULL)) < 0)
845 if (st->request_probe <= 0) {
846 s->internal->raw_packet_buffer = pktl->next;
847 s->internal->raw_packet_buffer_remaining_size += pkt->size;
856 ret = s->iformat->read_packet(s, pkt);
858 /* Some demuxers return FFERROR_REDO when they consume
859 data and discard it (ignored streams, junk, extradata).
860 We must re-call the demuxer to get the real packet. */
861 if (ret == FFERROR_REDO)
863 if (!pktl || ret == AVERROR(EAGAIN))
865 for (i = 0; i < s->nb_streams; i++) {
867 if (st->probe_packets || st->request_probe > 0)
868 if ((err = probe_codec(s, st, NULL)) < 0)
870 av_assert0(st->request_probe <= 0);
875 err = av_packet_make_refcounted(pkt);
879 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
880 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
881 av_log(s, AV_LOG_WARNING,
882 "Dropped corrupted packet (stream = %d)\n",
884 av_packet_unref(pkt);
888 if (pkt->stream_index >= (unsigned)s->nb_streams) {
889 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
893 st = s->streams[pkt->stream_index];
895 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
896 // correct first time stamps to negative values
897 if (!is_relative(st->first_dts))
898 st->first_dts = wrap_timestamp(st, st->first_dts);
899 if (!is_relative(st->start_time))
900 st->start_time = wrap_timestamp(st, st->start_time);
901 if (!is_relative(st->cur_dts))
902 st->cur_dts = wrap_timestamp(st, st->cur_dts);
905 pkt->dts = wrap_timestamp(st, pkt->dts);
906 pkt->pts = wrap_timestamp(st, pkt->pts);
908 force_codec_ids(s, st);
910 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
911 if (s->use_wallclock_as_timestamps)
912 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
914 if (!pktl && st->request_probe <= 0)
917 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
918 &s->internal->raw_packet_buffer_end,
922 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
924 if ((err = probe_codec(s, st, pkt)) < 0)
930 /**********************************************************/
932 static int determinable_frame_size(AVCodecContext *avctx)
934 switch(avctx->codec_id) {
935 case AV_CODEC_ID_MP1:
936 case AV_CODEC_ID_MP2:
937 case AV_CODEC_ID_MP3:
938 case AV_CODEC_ID_CODEC2:
946 * Return the frame duration in seconds. Return 0 if not available.
948 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
949 AVCodecParserContext *pc, AVPacket *pkt)
951 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
952 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
953 int frame_size, sample_rate;
955 #if FF_API_LAVF_AVCTX
956 FF_DISABLE_DEPRECATION_WARNINGS
957 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
958 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
959 FF_ENABLE_DEPRECATION_WARNINGS
964 switch (st->codecpar->codec_type) {
965 case AVMEDIA_TYPE_VIDEO:
966 if (st->r_frame_rate.num && !pc && s->iformat) {
967 *pnum = st->r_frame_rate.den;
968 *pden = st->r_frame_rate.num;
969 } else if (st->time_base.num * 1000LL > st->time_base.den) {
970 *pnum = st->time_base.num;
971 *pden = st->time_base.den;
972 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
973 av_assert0(st->internal->avctx->ticks_per_frame);
974 av_reduce(pnum, pden,
976 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
979 if (pc && pc->repeat_pict) {
980 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
981 av_reduce(pnum, pden,
982 (*pnum) * (1LL + pc->repeat_pict),
986 /* If this codec can be interlaced or progressive then we need
987 * a parser to compute duration of a packet. Thus if we have
988 * no parser in such case leave duration undefined. */
989 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
993 case AVMEDIA_TYPE_AUDIO:
994 if (st->internal->avctx_inited) {
995 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
996 sample_rate = st->internal->avctx->sample_rate;
998 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
999 sample_rate = st->codecpar->sample_rate;
1001 if (frame_size <= 0 || sample_rate <= 0)
1004 *pden = sample_rate;
1011 static int is_intra_only(enum AVCodecID id)
1013 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1016 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1021 static int has_decode_delay_been_guessed(AVStream *st)
1023 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1024 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1026 #if CONFIG_H264_DECODER
1027 if (st->internal->avctx->has_b_frames &&
1028 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1031 if (st->internal->avctx->has_b_frames<3)
1032 return st->nb_decoded_frames >= 7;
1033 else if (st->internal->avctx->has_b_frames<4)
1034 return st->nb_decoded_frames >= 18;
1036 return st->nb_decoded_frames >= 20;
1039 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1043 if (pktl == s->internal->packet_buffer_end)
1044 return s->internal->parse_queue;
1048 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1049 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1050 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1053 int delay = st->internal->avctx->has_b_frames;
1056 if (dts == AV_NOPTS_VALUE) {
1057 int64_t best_score = INT64_MAX;
1058 for (i = 0; i<delay; i++) {
1059 if (st->pts_reorder_error_count[i]) {
1060 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1061 if (score < best_score) {
1063 dts = pts_buffer[i];
1068 for (i = 0; i<delay; i++) {
1069 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1070 int64_t diff = FFABS(pts_buffer[i] - dts)
1071 + (uint64_t)st->pts_reorder_error[i];
1072 diff = FFMAX(diff, st->pts_reorder_error[i]);
1073 st->pts_reorder_error[i] = diff;
1074 st->pts_reorder_error_count[i]++;
1075 if (st->pts_reorder_error_count[i] > 250) {
1076 st->pts_reorder_error[i] >>= 1;
1077 st->pts_reorder_error_count[i] >>= 1;
1084 if (dts == AV_NOPTS_VALUE)
1085 dts = pts_buffer[0];
1091 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1092 * of the packets in a window.
1094 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1095 AVPacketList *pkt_buffer)
1097 AVStream *st = s->streams[stream_index];
1098 int delay = st->internal->avctx->has_b_frames;
1101 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1103 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1104 pts_buffer[i] = AV_NOPTS_VALUE;
1106 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1107 if (pkt_buffer->pkt.stream_index != stream_index)
1110 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1111 pts_buffer[0] = pkt_buffer->pkt.pts;
1112 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1113 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1115 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1120 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1121 int64_t dts, int64_t pts, AVPacket *pkt)
1123 AVStream *st = s->streams[stream_index];
1124 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1125 AVPacketList *pktl_it;
1129 if (st->first_dts != AV_NOPTS_VALUE ||
1130 dts == AV_NOPTS_VALUE ||
1131 st->cur_dts == AV_NOPTS_VALUE ||
1132 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1136 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1138 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1140 if (is_relative(pts))
1143 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1144 if (pktl_it->pkt.stream_index != stream_index)
1146 if (is_relative(pktl_it->pkt.pts))
1147 pktl_it->pkt.pts += shift;
1149 if (is_relative(pktl_it->pkt.dts))
1150 pktl_it->pkt.dts += shift;
1152 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1153 st->start_time = pktl_it->pkt.pts;
1154 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1155 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1159 if (has_decode_delay_been_guessed(st)) {
1160 update_dts_from_pts(s, stream_index, pktl);
1163 if (st->start_time == AV_NOPTS_VALUE) {
1164 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1165 st->start_time = pts;
1167 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1168 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1172 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1173 int stream_index, int duration)
1175 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1176 int64_t cur_dts = RELATIVE_TS_BASE;
1178 if (st->first_dts != AV_NOPTS_VALUE) {
1179 if (st->update_initial_durations_done)
1181 st->update_initial_durations_done = 1;
1182 cur_dts = st->first_dts;
1183 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1184 if (pktl->pkt.stream_index == stream_index) {
1185 if (pktl->pkt.pts != pktl->pkt.dts ||
1186 pktl->pkt.dts != AV_NOPTS_VALUE ||
1189 cur_dts -= duration;
1192 if (pktl && pktl->pkt.dts != st->first_dts) {
1193 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1194 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1198 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1201 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1202 st->first_dts = cur_dts;
1203 } else if (st->cur_dts != RELATIVE_TS_BASE)
1206 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1207 if (pktl->pkt.stream_index != stream_index)
1209 if ((pktl->pkt.pts == pktl->pkt.dts ||
1210 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1211 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1212 pktl->pkt.dts == st->first_dts ||
1213 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1214 !pktl->pkt.duration) {
1215 pktl->pkt.dts = cur_dts;
1216 if (!st->internal->avctx->has_b_frames)
1217 pktl->pkt.pts = cur_dts;
1218 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1219 pktl->pkt.duration = duration;
1222 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1225 st->cur_dts = cur_dts;
1228 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1229 AVCodecParserContext *pc, AVPacket *pkt,
1230 int64_t next_dts, int64_t next_pts)
1232 int num, den, presentation_delayed, delay, i;
1234 AVRational duration;
1235 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1236 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1238 if (s->flags & AVFMT_FLAG_NOFILLIN)
1241 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1242 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1243 if (st->last_dts_for_order_check <= pkt->dts) {
1246 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1247 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1249 st->last_dts_for_order_check);
1250 st->dts_misordered++;
1252 if (st->dts_ordered + st->dts_misordered > 250) {
1253 st->dts_ordered >>= 1;
1254 st->dts_misordered >>= 1;
1258 st->last_dts_for_order_check = pkt->dts;
1259 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1260 pkt->dts = AV_NOPTS_VALUE;
1263 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1264 pkt->dts = AV_NOPTS_VALUE;
1266 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1267 && !st->internal->avctx->has_b_frames)
1268 //FIXME Set low_delay = 0 when has_b_frames = 1
1269 st->internal->avctx->has_b_frames = 1;
1271 /* do we have a video B-frame ? */
1272 delay = st->internal->avctx->has_b_frames;
1273 presentation_delayed = 0;
1275 /* XXX: need has_b_frame, but cannot get it if the codec is
1276 * not initialized */
1278 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1279 presentation_delayed = 1;
1281 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1282 st->pts_wrap_bits < 63 &&
1283 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1284 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1285 pkt->dts -= 1LL << st->pts_wrap_bits;
1287 pkt->pts += 1LL << st->pts_wrap_bits;
1290 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1291 * We take the conservative approach and discard both.
1292 * Note: If this is misbehaving for an H.264 file, then possibly
1293 * presentation_delayed is not set correctly. */
1294 if (delay == 1 && pkt->dts == pkt->pts &&
1295 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1296 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1297 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1298 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1299 pkt->dts = AV_NOPTS_VALUE;
1302 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1303 if (pkt->duration == 0) {
1304 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1306 duration = (AVRational) {num, den};
1307 pkt->duration = av_rescale_rnd(1,
1308 num * (int64_t) st->time_base.den,
1309 den * (int64_t) st->time_base.num,
1314 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1315 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1317 /* Correct timestamps with byte offset if demuxers only have timestamps
1318 * on packet boundaries */
1319 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1320 /* this will estimate bitrate based on this frame's duration and size */
1321 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1322 if (pkt->pts != AV_NOPTS_VALUE)
1324 if (pkt->dts != AV_NOPTS_VALUE)
1328 /* This may be redundant, but it should not hurt. */
1329 if (pkt->dts != AV_NOPTS_VALUE &&
1330 pkt->pts != AV_NOPTS_VALUE &&
1331 pkt->pts > pkt->dts)
1332 presentation_delayed = 1;
1334 if (s->debug & FF_FDEBUG_TS)
1335 av_log(s, AV_LOG_TRACE,
1336 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1337 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1338 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1340 /* Interpolate PTS and DTS if they are not present. We skip H264
1341 * currently because delay and has_b_frames are not reliably set. */
1342 if ((delay == 0 || (delay == 1 && pc)) &&
1344 if (presentation_delayed) {
1345 /* DTS = decompression timestamp */
1346 /* PTS = presentation timestamp */
1347 if (pkt->dts == AV_NOPTS_VALUE)
1348 pkt->dts = st->last_IP_pts;
1349 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1350 if (pkt->dts == AV_NOPTS_VALUE)
1351 pkt->dts = st->cur_dts;
1353 /* This is tricky: the dts must be incremented by the duration
1354 * of the frame we are displaying, i.e. the last I- or P-frame. */
1355 if (st->last_IP_duration == 0)
1356 st->last_IP_duration = pkt->duration;
1357 if (pkt->dts != AV_NOPTS_VALUE)
1358 st->cur_dts = pkt->dts + st->last_IP_duration;
1359 if (pkt->dts != AV_NOPTS_VALUE &&
1360 pkt->pts == AV_NOPTS_VALUE &&
1361 st->last_IP_duration > 0 &&
1362 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1363 next_dts != next_pts &&
1364 next_pts != AV_NOPTS_VALUE)
1365 pkt->pts = next_dts;
1367 st->last_IP_duration = pkt->duration;
1368 st->last_IP_pts = pkt->pts;
1369 /* Cannot compute PTS if not present (we can compute it only
1370 * by knowing the future. */
1371 } else if (pkt->pts != AV_NOPTS_VALUE ||
1372 pkt->dts != AV_NOPTS_VALUE ||
1375 /* presentation is not delayed : PTS and DTS are the same */
1376 if (pkt->pts == AV_NOPTS_VALUE)
1377 pkt->pts = pkt->dts;
1378 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1380 if (pkt->pts == AV_NOPTS_VALUE)
1381 pkt->pts = st->cur_dts;
1382 pkt->dts = pkt->pts;
1383 if (pkt->pts != AV_NOPTS_VALUE)
1384 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1388 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1389 st->pts_buffer[0] = pkt->pts;
1390 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1391 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1393 if(has_decode_delay_been_guessed(st))
1394 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1396 // We skipped it above so we try here.
1398 // This should happen on the first packet
1399 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1400 if (pkt->dts > st->cur_dts)
1401 st->cur_dts = pkt->dts;
1403 if (s->debug & FF_FDEBUG_TS)
1404 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1405 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1408 if (is_intra_only(st->codecpar->codec_id))
1409 pkt->flags |= AV_PKT_FLAG_KEY;
1410 #if FF_API_CONVERGENCE_DURATION
1411 FF_DISABLE_DEPRECATION_WARNINGS
1413 pkt->convergence_duration = pc->convergence_duration;
1414 FF_ENABLE_DEPRECATION_WARNINGS
1418 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1420 AVPacketList *tmp = *pkt_buf;
1423 AVPacketList *pktl = tmp;
1425 av_packet_unref(&pktl->pkt);
1429 *pkt_buf_end = NULL;
1433 * Parse a packet, add all split parts to parse_queue.
1435 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1437 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1439 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1440 AVStream *st = s->streams[stream_index];
1441 uint8_t *data = pkt ? pkt->data : NULL;
1442 int size = pkt ? pkt->size : 0;
1443 int ret = 0, got_output = 0;
1446 av_init_packet(&flush_pkt);
1449 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1450 // preserve 0-size sync packets
1451 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1454 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1456 int64_t next_pts = pkt->pts;
1457 int64_t next_dts = pkt->dts;
1459 av_init_packet(&out_pkt);
1460 len = av_parser_parse2(st->parser, st->internal->avctx,
1461 &out_pkt.data, &out_pkt.size, data, size,
1462 pkt->pts, pkt->dts, pkt->pos);
1464 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1466 /* increment read pointer */
1470 got_output = !!out_pkt.size;
1475 if (pkt->buf && out_pkt.data == pkt->data) {
1476 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1477 * to data in it and not in the parser's internal buffer. */
1478 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1479 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1480 out_pkt.buf = av_buffer_ref(pkt->buf);
1482 ret = AVERROR(ENOMEM);
1486 ret = av_packet_make_refcounted(&out_pkt);
1491 if (pkt->side_data) {
1492 out_pkt.side_data = pkt->side_data;
1493 out_pkt.side_data_elems = pkt->side_data_elems;
1494 pkt->side_data = NULL;
1495 pkt->side_data_elems = 0;
1498 /* set the duration */
1499 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1500 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1501 if (st->internal->avctx->sample_rate > 0) {
1503 av_rescale_q_rnd(st->parser->duration,
1504 (AVRational) { 1, st->internal->avctx->sample_rate },
1510 out_pkt.stream_index = st->index;
1511 out_pkt.pts = st->parser->pts;
1512 out_pkt.dts = st->parser->dts;
1513 out_pkt.pos = st->parser->pos;
1514 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1516 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1517 out_pkt.pos = st->parser->frame_offset;
1519 if (st->parser->key_frame == 1 ||
1520 (st->parser->key_frame == -1 &&
1521 st->parser->pict_type == AV_PICTURE_TYPE_I))
1522 out_pkt.flags |= AV_PKT_FLAG_KEY;
1524 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1525 out_pkt.flags |= AV_PKT_FLAG_KEY;
1527 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1529 ret = ff_packet_list_put(&s->internal->parse_queue,
1530 &s->internal->parse_queue_end,
1533 av_packet_unref(&out_pkt);
1538 /* end of the stream => close and free the parser */
1539 if (pkt == &flush_pkt) {
1540 av_parser_close(st->parser);
1545 av_packet_unref(pkt);
1549 int ff_packet_list_get(AVPacketList **pkt_buffer,
1550 AVPacketList **pkt_buffer_end,
1554 av_assert0(*pkt_buffer);
1557 *pkt_buffer = pktl->next;
1559 *pkt_buffer_end = NULL;
1564 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1566 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1569 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1571 int ret = 0, i, got_packet = 0;
1572 AVDictionary *metadata = NULL;
1574 av_init_packet(pkt);
1576 while (!got_packet && !s->internal->parse_queue) {
1580 /* read next packet */
1581 ret = ff_read_packet(s, &cur_pkt);
1583 if (ret == AVERROR(EAGAIN))
1585 /* flush the parsers */
1586 for (i = 0; i < s->nb_streams; i++) {
1588 if (st->parser && st->need_parsing)
1589 parse_packet(s, NULL, st->index);
1591 /* all remaining packets are now in parse_queue =>
1592 * really terminate parsing */
1596 st = s->streams[cur_pkt.stream_index];
1598 /* update context if required */
1599 if (st->internal->need_context_update) {
1600 if (avcodec_is_open(st->internal->avctx)) {
1601 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1602 avcodec_close(st->internal->avctx);
1603 st->info->found_decoder = 0;
1606 /* close parser, because it depends on the codec */
1607 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1608 av_parser_close(st->parser);
1612 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1616 #if FF_API_LAVF_AVCTX
1617 FF_DISABLE_DEPRECATION_WARNINGS
1618 /* update deprecated public codec context */
1619 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1622 FF_ENABLE_DEPRECATION_WARNINGS
1625 st->internal->need_context_update = 0;
1628 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1629 cur_pkt.dts != AV_NOPTS_VALUE &&
1630 cur_pkt.pts < cur_pkt.dts) {
1631 av_log(s, AV_LOG_WARNING,
1632 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1633 cur_pkt.stream_index,
1634 av_ts2str(cur_pkt.pts),
1635 av_ts2str(cur_pkt.dts),
1638 if (s->debug & FF_FDEBUG_TS)
1639 av_log(s, AV_LOG_DEBUG,
1640 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1641 cur_pkt.stream_index,
1642 av_ts2str(cur_pkt.pts),
1643 av_ts2str(cur_pkt.dts),
1644 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1646 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1647 st->parser = av_parser_init(st->codecpar->codec_id);
1649 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1650 "%s, packets or times may be invalid.\n",
1651 avcodec_get_name(st->codecpar->codec_id));
1652 /* no parser available: just output the raw packets */
1653 st->need_parsing = AVSTREAM_PARSE_NONE;
1654 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1655 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1656 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1657 st->parser->flags |= PARSER_FLAG_ONCE;
1658 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1659 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1662 if (!st->need_parsing || !st->parser) {
1663 /* no parsing needed: we just output the packet as is */
1665 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1666 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1667 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1668 ff_reduce_index(s, st->index);
1669 av_add_index_entry(st, pkt->pos, pkt->dts,
1670 0, 0, AVINDEX_KEYFRAME);
1673 } else if (st->discard < AVDISCARD_ALL) {
1674 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1676 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1677 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1678 st->codecpar->channels = st->internal->avctx->channels;
1679 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1680 st->codecpar->codec_id = st->internal->avctx->codec_id;
1683 av_packet_unref(&cur_pkt);
1685 if (pkt->flags & AV_PKT_FLAG_KEY)
1686 st->skip_to_keyframe = 0;
1687 if (st->skip_to_keyframe) {
1688 av_packet_unref(&cur_pkt);
1696 if (!got_packet && s->internal->parse_queue)
1697 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1700 AVStream *st = s->streams[pkt->stream_index];
1701 int discard_padding = 0;
1702 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1703 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1704 int64_t sample = ts_to_samples(st, pts);
1705 int duration = ts_to_samples(st, pkt->duration);
1706 int64_t end_sample = sample + duration;
1707 if (duration > 0 && end_sample >= st->first_discard_sample &&
1708 sample < st->last_discard_sample)
1709 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1711 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1712 st->skip_samples = st->start_skip_samples;
1713 if (st->skip_samples || discard_padding) {
1714 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1716 AV_WL32(p, st->skip_samples);
1717 AV_WL32(p + 4, discard_padding);
1718 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1720 st->skip_samples = 0;
1723 if (st->inject_global_side_data) {
1724 for (i = 0; i < st->nb_side_data; i++) {
1725 AVPacketSideData *src_sd = &st->side_data[i];
1728 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1731 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1733 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1737 memcpy(dst_data, src_sd->data, src_sd->size);
1739 st->inject_global_side_data = 0;
1743 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1745 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1746 av_dict_copy(&s->metadata, metadata, 0);
1747 av_dict_free(&metadata);
1748 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1751 #if FF_API_LAVF_AVCTX
1752 update_stream_avctx(s);
1755 if (s->debug & FF_FDEBUG_TS)
1756 av_log(s, AV_LOG_DEBUG,
1757 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1758 "size=%d, duration=%"PRId64", flags=%d\n",
1760 av_ts2str(pkt->pts),
1761 av_ts2str(pkt->dts),
1762 pkt->size, pkt->duration, pkt->flags);
1767 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1769 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1775 ret = s->internal->packet_buffer
1776 ? ff_packet_list_get(&s->internal->packet_buffer,
1777 &s->internal->packet_buffer_end, pkt)
1778 : read_frame_internal(s, pkt);
1785 AVPacketList *pktl = s->internal->packet_buffer;
1788 AVPacket *next_pkt = &pktl->pkt;
1790 if (next_pkt->dts != AV_NOPTS_VALUE) {
1791 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1792 // last dts seen for this stream. if any of packets following
1793 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1794 int64_t last_dts = next_pkt->dts;
1795 av_assert2(wrap_bits <= 64);
1796 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1797 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1798 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1799 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1801 next_pkt->pts = pktl->pkt.dts;
1803 if (last_dts != AV_NOPTS_VALUE) {
1804 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1805 last_dts = pktl->pkt.dts;
1810 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1811 // Fixing the last reference frame had none pts issue (For MXF etc).
1812 // We only do this when
1814 // 2. we are not able to resolve a pts value for current packet.
1815 // 3. the packets for this stream at the end of the files had valid dts.
1816 next_pkt->pts = last_dts + next_pkt->duration;
1818 pktl = s->internal->packet_buffer;
1821 /* read packet from packet buffer, if there is data */
1822 st = s->streams[next_pkt->stream_index];
1823 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1824 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1825 ret = ff_packet_list_get(&s->internal->packet_buffer,
1826 &s->internal->packet_buffer_end, pkt);
1831 ret = read_frame_internal(s, pkt);
1833 if (pktl && ret != AVERROR(EAGAIN)) {
1840 ret = ff_packet_list_put(&s->internal->packet_buffer,
1841 &s->internal->packet_buffer_end,
1842 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1843 av_packet_unref(pkt);
1850 st = s->streams[pkt->stream_index];
1851 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1852 ff_reduce_index(s, st->index);
1853 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1856 if (is_relative(pkt->dts))
1857 pkt->dts -= RELATIVE_TS_BASE;
1858 if (is_relative(pkt->pts))
1859 pkt->pts -= RELATIVE_TS_BASE;
1864 /* XXX: suppress the packet queue */
1865 static void flush_packet_queue(AVFormatContext *s)
1869 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1870 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1871 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1873 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1876 /*******************************************************/
1879 int av_find_default_stream_index(AVFormatContext *s)
1883 int best_stream = 0;
1884 int best_score = INT_MIN;
1886 if (s->nb_streams <= 0)
1888 for (i = 0; i < s->nb_streams; i++) {
1891 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1892 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1894 if (st->codecpar->width && st->codecpar->height)
1898 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1899 if (st->codecpar->sample_rate)
1902 if (st->codec_info_nb_frames)
1905 if (st->discard != AVDISCARD_ALL)
1908 if (score > best_score) {
1916 /** Flush the frame reader. */
1917 void ff_read_frame_flush(AVFormatContext *s)
1922 flush_packet_queue(s);
1924 /* Reset read state for each stream. */
1925 for (i = 0; i < s->nb_streams; i++) {
1929 av_parser_close(st->parser);
1932 st->last_IP_pts = AV_NOPTS_VALUE;
1933 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1934 if (st->first_dts == AV_NOPTS_VALUE)
1935 st->cur_dts = RELATIVE_TS_BASE;
1937 /* We set the current DTS to an unspecified origin. */
1938 st->cur_dts = AV_NOPTS_VALUE;
1940 st->probe_packets = MAX_PROBE_PACKETS;
1942 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1943 st->pts_buffer[j] = AV_NOPTS_VALUE;
1945 if (s->internal->inject_global_side_data)
1946 st->inject_global_side_data = 1;
1948 st->skip_samples = 0;
1952 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1956 for (i = 0; i < s->nb_streams; i++) {
1957 AVStream *st = s->streams[i];
1960 av_rescale(timestamp,
1961 st->time_base.den * (int64_t) ref_st->time_base.num,
1962 st->time_base.num * (int64_t) ref_st->time_base.den);
1966 void ff_reduce_index(AVFormatContext *s, int stream_index)
1968 AVStream *st = s->streams[stream_index];
1969 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1971 if ((unsigned) st->nb_index_entries >= max_entries) {
1973 for (i = 0; 2 * i < st->nb_index_entries; i++)
1974 st->index_entries[i] = st->index_entries[2 * i];
1975 st->nb_index_entries = i;
1979 int ff_add_index_entry(AVIndexEntry **index_entries,
1980 int *nb_index_entries,
1981 unsigned int *index_entries_allocated_size,
1982 int64_t pos, int64_t timestamp,
1983 int size, int distance, int flags)
1985 AVIndexEntry *entries, *ie;
1988 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1991 if (timestamp == AV_NOPTS_VALUE)
1992 return AVERROR(EINVAL);
1994 if (size < 0 || size > 0x3FFFFFFF)
1995 return AVERROR(EINVAL);
1997 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1998 timestamp -= RELATIVE_TS_BASE;
2000 entries = av_fast_realloc(*index_entries,
2001 index_entries_allocated_size,
2002 (*nb_index_entries + 1) *
2003 sizeof(AVIndexEntry));
2007 *index_entries = entries;
2009 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2010 timestamp, AVSEEK_FLAG_ANY);
2013 index = (*nb_index_entries)++;
2014 ie = &entries[index];
2015 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2017 ie = &entries[index];
2018 if (ie->timestamp != timestamp) {
2019 if (ie->timestamp <= timestamp)
2021 memmove(entries + index + 1, entries + index,
2022 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2023 (*nb_index_entries)++;
2024 } else if (ie->pos == pos && distance < ie->min_distance)
2025 // do not reduce the distance
2026 distance = ie->min_distance;
2030 ie->timestamp = timestamp;
2031 ie->min_distance = distance;
2038 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2039 int size, int distance, int flags)
2041 timestamp = wrap_timestamp(st, timestamp);
2042 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2043 &st->index_entries_allocated_size, pos,
2044 timestamp, size, distance, flags);
2047 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2048 int64_t wanted_timestamp, int flags)
2056 // Optimize appending index entries at the end.
2057 if (b && entries[b - 1].timestamp < wanted_timestamp)
2063 // Search for the next non-discarded packet.
2064 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2066 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2072 timestamp = entries[m].timestamp;
2073 if (timestamp >= wanted_timestamp)
2075 if (timestamp <= wanted_timestamp)
2078 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2080 if (!(flags & AVSEEK_FLAG_ANY))
2081 while (m >= 0 && m < nb_entries &&
2082 !(entries[m].flags & AVINDEX_KEYFRAME))
2083 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2085 if (m == nb_entries)
2090 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2093 int64_t pos_delta = 0;
2095 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2096 const char *proto = avio_find_protocol_name(s->url);
2099 av_log(s, AV_LOG_INFO,
2100 "Protocol name not provided, cannot determine if input is local or "
2101 "a network protocol, buffers and access patterns cannot be configured "
2102 "optimally without knowing the protocol\n");
2105 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2108 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2109 AVStream *st1 = s->streams[ist1];
2110 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2111 AVStream *st2 = s->streams[ist2];
2117 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2118 AVIndexEntry *e1 = &st1->index_entries[i1];
2119 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2121 skip = FFMAX(skip, e1->size);
2122 for (; i2 < st2->nb_index_entries; i2++) {
2123 AVIndexEntry *e2 = &st2->index_entries[i2];
2124 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2125 if (e2_pts - e1_pts < time_tolerance)
2127 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2135 /* XXX This could be adjusted depending on protocol*/
2136 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2137 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2138 ffio_set_buf_size(s->pb, pos_delta);
2139 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2142 if (skip < (1<<23)) {
2143 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2147 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2149 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2150 wanted_timestamp, flags);
2153 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2154 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2156 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2157 if (stream_index >= 0)
2158 ts = wrap_timestamp(s->streams[stream_index], ts);
2162 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2163 int64_t target_ts, int flags)
2165 AVInputFormat *avif = s->iformat;
2166 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2167 int64_t ts_min, ts_max, ts;
2172 if (stream_index < 0)
2175 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2178 ts_min = AV_NOPTS_VALUE;
2179 pos_limit = -1; // GCC falsely says it may be uninitialized.
2181 st = s->streams[stream_index];
2182 if (st->index_entries) {
2185 /* FIXME: Whole function must be checked for non-keyframe entries in
2186 * index case, especially read_timestamp(). */
2187 index = av_index_search_timestamp(st, target_ts,
2188 flags | AVSEEK_FLAG_BACKWARD);
2189 index = FFMAX(index, 0);
2190 e = &st->index_entries[index];
2192 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2194 ts_min = e->timestamp;
2195 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2196 pos_min, av_ts2str(ts_min));
2198 av_assert1(index == 0);
2201 index = av_index_search_timestamp(st, target_ts,
2202 flags & ~AVSEEK_FLAG_BACKWARD);
2203 av_assert0(index < st->nb_index_entries);
2205 e = &st->index_entries[index];
2206 av_assert1(e->timestamp >= target_ts);
2208 ts_max = e->timestamp;
2209 pos_limit = pos_max - e->min_distance;
2210 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2211 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2215 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2216 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2221 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2224 ff_read_frame_flush(s);
2225 ff_update_cur_dts(s, st, ts);
2230 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2231 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2233 int64_t step = 1024;
2234 int64_t limit, ts_max;
2235 int64_t filesize = avio_size(s->pb);
2236 int64_t pos_max = filesize - 1;
2239 pos_max = FFMAX(0, (pos_max) - step);
2240 ts_max = ff_read_timestamp(s, stream_index,
2241 &pos_max, limit, read_timestamp);
2243 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2244 if (ts_max == AV_NOPTS_VALUE)
2248 int64_t tmp_pos = pos_max + 1;
2249 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2250 &tmp_pos, INT64_MAX, read_timestamp);
2251 if (tmp_ts == AV_NOPTS_VALUE)
2253 av_assert0(tmp_pos > pos_max);
2256 if (tmp_pos >= filesize)
2268 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2269 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2270 int64_t ts_min, int64_t ts_max,
2271 int flags, int64_t *ts_ret,
2272 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2273 int64_t *, int64_t))
2280 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2282 if (ts_min == AV_NOPTS_VALUE) {
2283 pos_min = s->internal->data_offset;
2284 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2285 if (ts_min == AV_NOPTS_VALUE)
2289 if (ts_min >= target_ts) {
2294 if (ts_max == AV_NOPTS_VALUE) {
2295 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2297 pos_limit = pos_max;
2300 if (ts_max <= target_ts) {
2305 av_assert0(ts_min < ts_max);
2308 while (pos_min < pos_limit) {
2309 av_log(s, AV_LOG_TRACE,
2310 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2311 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2312 av_assert0(pos_limit <= pos_max);
2314 if (no_change == 0) {
2315 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2316 // interpolate position (better than dichotomy)
2317 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2319 pos_min - approximate_keyframe_distance;
2320 } else if (no_change == 1) {
2321 // bisection if interpolation did not change min / max pos last time
2322 pos = (pos_min + pos_limit) >> 1;
2324 /* linear search if bisection failed, can only happen if there
2325 * are very few or no keyframes between min/max */
2330 else if (pos > pos_limit)
2334 // May pass pos_limit instead of -1.
2335 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2340 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2341 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2342 pos_min, pos, pos_max,
2343 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2344 pos_limit, start_pos, no_change);
2345 if (ts == AV_NOPTS_VALUE) {
2346 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2349 if (target_ts <= ts) {
2350 pos_limit = start_pos - 1;
2354 if (target_ts >= ts) {
2360 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2361 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2364 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2366 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2367 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2368 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2374 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2375 int64_t pos, int flags)
2377 int64_t pos_min, pos_max;
2379 pos_min = s->internal->data_offset;
2380 pos_max = avio_size(s->pb) - 1;
2384 else if (pos > pos_max)
2387 avio_seek(s->pb, pos, SEEK_SET);
2389 s->io_repositioned = 1;
2394 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2395 int64_t timestamp, int flags)
2402 st = s->streams[stream_index];
2404 index = av_index_search_timestamp(st, timestamp, flags);
2406 if (index < 0 && st->nb_index_entries &&
2407 timestamp < st->index_entries[0].timestamp)
2410 if (index < 0 || index == st->nb_index_entries - 1) {
2414 if (st->nb_index_entries) {
2415 av_assert0(st->index_entries);
2416 ie = &st->index_entries[st->nb_index_entries - 1];
2417 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2419 ff_update_cur_dts(s, st, ie->timestamp);
2421 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2427 read_status = av_read_frame(s, &pkt);
2428 } while (read_status == AVERROR(EAGAIN));
2429 if (read_status < 0)
2431 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2432 if (pkt.flags & AV_PKT_FLAG_KEY) {
2433 av_packet_unref(&pkt);
2436 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2437 av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
2438 av_packet_unref(&pkt);
2442 av_packet_unref(&pkt);
2444 index = av_index_search_timestamp(st, timestamp, flags);
2449 ff_read_frame_flush(s);
2450 if (s->iformat->read_seek)
2451 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2453 ie = &st->index_entries[index];
2454 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2456 ff_update_cur_dts(s, st, ie->timestamp);
2461 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2462 int64_t timestamp, int flags)
2467 if (flags & AVSEEK_FLAG_BYTE) {
2468 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2470 ff_read_frame_flush(s);
2471 return seek_frame_byte(s, stream_index, timestamp, flags);
2474 if (stream_index < 0) {
2475 stream_index = av_find_default_stream_index(s);
2476 if (stream_index < 0)
2479 st = s->streams[stream_index];
2480 /* timestamp for default must be expressed in AV_TIME_BASE units */
2481 timestamp = av_rescale(timestamp, st->time_base.den,
2482 AV_TIME_BASE * (int64_t) st->time_base.num);
2485 /* first, we try the format specific seek */
2486 if (s->iformat->read_seek) {
2487 ff_read_frame_flush(s);
2488 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2494 if (s->iformat->read_timestamp &&
2495 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2496 ff_read_frame_flush(s);
2497 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2498 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2499 ff_read_frame_flush(s);
2500 return seek_frame_generic(s, stream_index, timestamp, flags);
2505 int av_seek_frame(AVFormatContext *s, int stream_index,
2506 int64_t timestamp, int flags)
2510 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2511 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2512 if ((flags & AVSEEK_FLAG_BACKWARD))
2516 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2517 flags & ~AVSEEK_FLAG_BACKWARD);
2520 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2523 ret = avformat_queue_attached_pictures(s);
2528 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2529 int64_t ts, int64_t max_ts, int flags)
2531 if (min_ts > ts || max_ts < ts)
2533 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2534 return AVERROR(EINVAL);
2537 flags |= AVSEEK_FLAG_ANY;
2538 flags &= ~AVSEEK_FLAG_BACKWARD;
2540 if (s->iformat->read_seek2) {
2542 ff_read_frame_flush(s);
2544 if (stream_index == -1 && s->nb_streams == 1) {
2545 AVRational time_base = s->streams[0]->time_base;
2546 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2547 min_ts = av_rescale_rnd(min_ts, time_base.den,
2548 time_base.num * (int64_t)AV_TIME_BASE,
2549 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2550 max_ts = av_rescale_rnd(max_ts, time_base.den,
2551 time_base.num * (int64_t)AV_TIME_BASE,
2552 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2556 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2560 ret = avformat_queue_attached_pictures(s);
2564 if (s->iformat->read_timestamp) {
2565 // try to seek via read_timestamp()
2568 // Fall back on old API if new is not implemented but old is.
2569 // Note the old API has somewhat different semantics.
2570 if (s->iformat->read_seek || 1) {
2571 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2572 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2573 if (ret<0 && ts != min_ts && max_ts != ts) {
2574 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2576 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2581 // try some generic seek like seek_frame_generic() but with new ts semantics
2582 return -1; //unreachable
2585 int avformat_flush(AVFormatContext *s)
2587 ff_read_frame_flush(s);
2591 /*******************************************************/
2594 * Return TRUE if the stream has accurate duration in any stream.
2596 * @return TRUE if the stream has accurate duration for at least one component.
2598 static int has_duration(AVFormatContext *ic)
2603 for (i = 0; i < ic->nb_streams; i++) {
2604 st = ic->streams[i];
2605 if (st->duration != AV_NOPTS_VALUE)
2608 if (ic->duration != AV_NOPTS_VALUE)
2614 * Estimate the stream timings from the one of each components.
2616 * Also computes the global bitrate if possible.
2618 static void update_stream_timings(AVFormatContext *ic)
2620 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2621 int64_t duration, duration1, filesize;
2626 start_time = INT64_MAX;
2627 start_time_text = INT64_MAX;
2628 end_time = INT64_MIN;
2629 end_time_text = INT64_MIN;
2630 duration = INT64_MIN;
2631 for (i = 0; i < ic->nb_streams; i++) {
2632 st = ic->streams[i];
2633 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2634 start_time1 = av_rescale_q(st->start_time, st->time_base,
2636 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2637 if (start_time1 < start_time_text)
2638 start_time_text = start_time1;
2640 start_time = FFMIN(start_time, start_time1);
2641 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2643 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2644 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2645 end_time1 += start_time1;
2646 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2647 end_time_text = FFMAX(end_time_text, end_time1);
2649 end_time = FFMAX(end_time, end_time1);
2651 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2652 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2653 p->start_time = start_time1;
2654 if (p->end_time < end_time1)
2655 p->end_time = end_time1;
2658 if (st->duration != AV_NOPTS_VALUE) {
2659 duration1 = av_rescale_q(st->duration, st->time_base,
2661 duration = FFMAX(duration, duration1);
2664 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2665 start_time = start_time_text;
2666 else if (start_time > start_time_text)
2667 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2669 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE)) {
2670 end_time = end_time_text;
2671 } else if (end_time < end_time_text) {
2672 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2675 if (start_time != INT64_MAX) {
2676 ic->start_time = start_time;
2677 if (end_time != INT64_MIN) {
2678 if (ic->nb_programs > 1) {
2679 for (i = 0; i < ic->nb_programs; i++) {
2680 p = ic->programs[i];
2681 if (p->start_time != AV_NOPTS_VALUE &&
2682 p->end_time > p->start_time &&
2683 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2684 duration = FFMAX(duration, p->end_time - p->start_time);
2686 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2687 duration = FFMAX(duration, end_time - start_time);
2691 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2692 ic->duration = duration;
2694 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2695 /* compute the bitrate */
2696 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2697 (double) ic->duration;
2698 if (bitrate >= 0 && bitrate <= INT64_MAX)
2699 ic->bit_rate = bitrate;
2703 static void fill_all_stream_timings(AVFormatContext *ic)
2708 update_stream_timings(ic);
2709 for (i = 0; i < ic->nb_streams; i++) {
2710 st = ic->streams[i];
2711 if (st->start_time == AV_NOPTS_VALUE) {
2712 if (ic->start_time != AV_NOPTS_VALUE)
2713 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2715 if (ic->duration != AV_NOPTS_VALUE)
2716 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2722 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2724 int64_t filesize, duration;
2725 int i, show_warning = 0;
2728 /* if bit_rate is already set, we believe it */
2729 if (ic->bit_rate <= 0) {
2730 int64_t bit_rate = 0;
2731 for (i = 0; i < ic->nb_streams; i++) {
2732 st = ic->streams[i];
2733 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2734 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2735 if (st->codecpar->bit_rate > 0) {
2736 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2740 bit_rate += st->codecpar->bit_rate;
2741 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2742 // If we have a videostream with packets but without a bitrate
2743 // then consider the sum not known
2748 ic->bit_rate = bit_rate;
2751 /* if duration is already set, we believe it */
2752 if (ic->duration == AV_NOPTS_VALUE &&
2753 ic->bit_rate != 0) {
2754 filesize = ic->pb ? avio_size(ic->pb) : 0;
2755 if (filesize > ic->internal->data_offset) {
2756 filesize -= ic->internal->data_offset;
2757 for (i = 0; i < ic->nb_streams; i++) {
2758 st = ic->streams[i];
2759 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2760 && st->duration == AV_NOPTS_VALUE) {
2761 duration = av_rescale(8 * filesize, st->time_base.den,
2763 (int64_t) st->time_base.num);
2764 st->duration = duration;
2771 av_log(ic, AV_LOG_WARNING,
2772 "Estimating duration from bitrate, this may be inaccurate\n");
2775 #define DURATION_MAX_READ_SIZE 250000LL
2776 #define DURATION_MAX_RETRY 6
2778 /* only usable for MPEG-PS streams */
2779 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2781 AVPacket pkt1, *pkt = &pkt1;
2783 int num, den, read_size, i, ret;
2784 int found_duration = 0;
2786 int64_t filesize, offset, duration;
2789 /* flush packet queue */
2790 flush_packet_queue(ic);
2792 for (i = 0; i < ic->nb_streams; i++) {
2793 st = ic->streams[i];
2794 if (st->start_time == AV_NOPTS_VALUE &&
2795 st->first_dts == AV_NOPTS_VALUE &&
2796 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2797 av_log(ic, AV_LOG_WARNING,
2798 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2801 av_parser_close(st->parser);
2806 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2807 /* estimate the end time (duration) */
2808 /* XXX: may need to support wrapping */
2809 filesize = ic->pb ? avio_size(ic->pb) : 0;
2811 is_end = found_duration;
2812 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2816 avio_seek(ic->pb, offset, SEEK_SET);
2819 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2823 ret = ff_read_packet(ic, pkt);
2824 } while (ret == AVERROR(EAGAIN));
2827 read_size += pkt->size;
2828 st = ic->streams[pkt->stream_index];
2829 if (pkt->pts != AV_NOPTS_VALUE &&
2830 (st->start_time != AV_NOPTS_VALUE ||
2831 st->first_dts != AV_NOPTS_VALUE)) {
2832 if (pkt->duration == 0) {
2833 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2835 pkt->duration = av_rescale_rnd(1,
2836 num * (int64_t) st->time_base.den,
2837 den * (int64_t) st->time_base.num,
2841 duration = pkt->pts + pkt->duration;
2843 if (st->start_time != AV_NOPTS_VALUE)
2844 duration -= st->start_time;
2846 duration -= st->first_dts;
2848 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2849 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2850 st->duration = duration;
2851 st->info->last_duration = duration;
2854 av_packet_unref(pkt);
2857 /* check if all audio/video streams have valid duration */
2860 for (i = 0; i < ic->nb_streams; i++) {
2861 st = ic->streams[i];
2862 switch (st->codecpar->codec_type) {
2863 case AVMEDIA_TYPE_VIDEO:
2864 case AVMEDIA_TYPE_AUDIO:
2865 if (st->duration == AV_NOPTS_VALUE)
2872 ++retry <= DURATION_MAX_RETRY);
2874 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2876 /* warn about audio/video streams which duration could not be estimated */
2877 for (i = 0; i < ic->nb_streams; i++) {
2878 st = ic->streams[i];
2879 if (st->duration == AV_NOPTS_VALUE) {
2880 switch (st->codecpar->codec_type) {
2881 case AVMEDIA_TYPE_VIDEO:
2882 case AVMEDIA_TYPE_AUDIO:
2883 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2884 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2886 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2890 fill_all_stream_timings(ic);
2892 avio_seek(ic->pb, old_offset, SEEK_SET);
2893 for (i = 0; i < ic->nb_streams; i++) {
2896 st = ic->streams[i];
2897 st->cur_dts = st->first_dts;
2898 st->last_IP_pts = AV_NOPTS_VALUE;
2899 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2900 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2901 st->pts_buffer[j] = AV_NOPTS_VALUE;
2905 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2909 /* get the file size, if possible */
2910 if (ic->iformat->flags & AVFMT_NOFILE) {
2913 file_size = avio_size(ic->pb);
2914 file_size = FFMAX(0, file_size);
2917 if ((!strcmp(ic->iformat->name, "mpeg") ||
2918 !strcmp(ic->iformat->name, "mpegts")) &&
2919 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2920 /* get accurate estimate from the PTSes */
2921 estimate_timings_from_pts(ic, old_offset);
2922 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2923 } else if (has_duration(ic)) {
2924 /* at least one component has timings - we use them for all
2926 fill_all_stream_timings(ic);
2927 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2929 /* less precise: use bitrate info */
2930 estimate_timings_from_bit_rate(ic);
2931 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2933 update_stream_timings(ic);
2937 AVStream av_unused *st;
2938 for (i = 0; i < ic->nb_streams; i++) {
2939 st = ic->streams[i];
2940 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2941 (double) st->start_time * av_q2d(st->time_base),
2942 (double) st->duration * av_q2d(st->time_base));
2944 av_log(ic, AV_LOG_TRACE,
2945 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2946 (double) ic->start_time / AV_TIME_BASE,
2947 (double) ic->duration / AV_TIME_BASE,
2948 (int64_t)ic->bit_rate / 1000);
2952 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2954 AVCodecContext *avctx = st->internal->avctx;
2956 #define FAIL(errmsg) do { \
2958 *errmsg_ptr = errmsg; \
2962 if ( avctx->codec_id == AV_CODEC_ID_NONE
2963 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2964 FAIL("unknown codec");
2965 switch (avctx->codec_type) {
2966 case AVMEDIA_TYPE_AUDIO:
2967 if (!avctx->frame_size && determinable_frame_size(avctx))
2968 FAIL("unspecified frame size");
2969 if (st->info->found_decoder >= 0 &&
2970 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2971 FAIL("unspecified sample format");
2972 if (!avctx->sample_rate)
2973 FAIL("unspecified sample rate");
2974 if (!avctx->channels)
2975 FAIL("unspecified number of channels");
2976 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2977 FAIL("no decodable DTS frames");
2979 case AVMEDIA_TYPE_VIDEO:
2981 FAIL("unspecified size");
2982 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2983 FAIL("unspecified pixel format");
2984 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2985 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2986 FAIL("no frame in rv30/40 and no sar");
2988 case AVMEDIA_TYPE_SUBTITLE:
2989 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2990 FAIL("unspecified size");
2992 case AVMEDIA_TYPE_DATA:
2993 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2999 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3000 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3001 AVDictionary **options)
3003 AVCodecContext *avctx = st->internal->avctx;
3004 const AVCodec *codec;
3005 int got_picture = 1, ret = 0;
3006 AVFrame *frame = av_frame_alloc();
3007 AVSubtitle subtitle;
3008 AVPacket pkt = *avpkt;
3009 int do_skip_frame = 0;
3010 enum AVDiscard skip_frame;
3013 return AVERROR(ENOMEM);
3015 if (!avcodec_is_open(avctx) &&
3016 st->info->found_decoder <= 0 &&
3017 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3018 AVDictionary *thread_opt = NULL;
3020 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3023 st->info->found_decoder = -st->codecpar->codec_id;
3028 /* Force thread count to 1 since the H.264 decoder will not extract
3029 * SPS and PPS to extradata during multi-threaded decoding. */
3030 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3031 if (s->codec_whitelist)
3032 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3033 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3035 av_dict_free(&thread_opt);
3037 st->info->found_decoder = -avctx->codec_id;
3040 st->info->found_decoder = 1;
3041 } else if (!st->info->found_decoder)
3042 st->info->found_decoder = 1;
3044 if (st->info->found_decoder < 0) {
3049 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3051 skip_frame = avctx->skip_frame;
3052 avctx->skip_frame = AVDISCARD_ALL;
3055 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3057 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3058 (!st->codec_info_nb_frames &&
3059 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3061 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3062 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3063 ret = avcodec_send_packet(avctx, &pkt);
3064 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3068 ret = avcodec_receive_frame(avctx, frame);
3071 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3073 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3074 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3075 &got_picture, &pkt);
3081 st->nb_decoded_frames++;
3086 if (!pkt.data && !got_picture)
3090 if (do_skip_frame) {
3091 avctx->skip_frame = skip_frame;
3094 av_frame_free(&frame);
3098 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3100 while (tags->id != AV_CODEC_ID_NONE) {
3108 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3111 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3112 if (tag == tags[i].tag)
3114 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3115 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3117 return AV_CODEC_ID_NONE;
3120 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3122 if (bps <= 0 || bps > 64)
3123 return AV_CODEC_ID_NONE;
3128 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3130 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3132 return AV_CODEC_ID_NONE;
3137 if (sflags & (1 << (bps - 1))) {
3140 return AV_CODEC_ID_PCM_S8;
3142 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3144 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3146 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3148 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3150 return AV_CODEC_ID_NONE;
3155 return AV_CODEC_ID_PCM_U8;
3157 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3159 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3161 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3163 return AV_CODEC_ID_NONE;
3169 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3172 if (!av_codec_get_tag2(tags, id, &tag))
3177 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3181 for (i = 0; tags && tags[i]; i++) {
3182 const AVCodecTag *codec_tags = tags[i];
3183 while (codec_tags->id != AV_CODEC_ID_NONE) {
3184 if (codec_tags->id == id) {
3185 *tag = codec_tags->tag;
3194 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3197 for (i = 0; tags && tags[i]; i++) {
3198 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3199 if (id != AV_CODEC_ID_NONE)
3202 return AV_CODEC_ID_NONE;
3205 static void compute_chapters_end(AVFormatContext *s)
3208 int64_t max_time = 0;
3210 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3211 max_time = s->duration +
3212 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3214 for (i = 0; i < s->nb_chapters; i++)
3215 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3216 AVChapter *ch = s->chapters[i];
3217 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3221 for (j = 0; j < s->nb_chapters; j++) {
3222 AVChapter *ch1 = s->chapters[j];
3223 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3225 if (j != i && next_start > ch->start && next_start < end)
3228 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3232 static int get_std_framerate(int i)
3235 return (i + 1) * 1001;
3239 return (i + 31) * 1001 * 12;
3243 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3247 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3250 /* Is the time base unreliable?
3251 * This is a heuristic to balance between quick acceptance of the values in
3252 * the headers vs. some extra checks.
3253 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3254 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3255 * And there are "variable" fps files this needs to detect as well. */
3256 static int tb_unreliable(AVCodecContext *c)
3258 if (c->time_base.den >= 101LL * c->time_base.num ||
3259 c->time_base.den < 5LL * c->time_base.num ||
3260 // c->codec_tag == AV_RL32("DIVX") ||
3261 // c->codec_tag == AV_RL32("XVID") ||
3262 c->codec_tag == AV_RL32("mp4v") ||
3263 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3264 c->codec_id == AV_CODEC_ID_GIF ||
3265 c->codec_id == AV_CODEC_ID_HEVC ||
3266 c->codec_id == AV_CODEC_ID_H264)
3271 int ff_alloc_extradata(AVCodecParameters *par, int size)
3273 av_freep(&par->extradata);
3274 par->extradata_size = 0;
3276 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3277 return AVERROR(EINVAL);
3279 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3280 if (!par->extradata)
3281 return AVERROR(ENOMEM);
3283 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3284 par->extradata_size = size;
3289 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3291 int ret = ff_alloc_extradata(par, size);
3294 ret = avio_read(pb, par->extradata, size);
3296 av_freep(&par->extradata);
3297 par->extradata_size = 0;
3298 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3299 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3305 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3308 int64_t last = st->info->last_dts;
3310 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3311 && ts - (uint64_t)last < INT64_MAX) {
3312 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3313 int64_t duration = ts - last;
3315 if (!st->info->duration_error)
3316 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3317 if (!st->info->duration_error)
3318 return AVERROR(ENOMEM);
3320 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3321 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3322 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3323 if (st->info->duration_error[0][1][i] < 1e10) {
3324 int framerate = get_std_framerate(i);
3325 double sdts = dts*framerate/(1001*12);
3326 for (j= 0; j<2; j++) {
3327 int64_t ticks = llrint(sdts+j*0.5);
3328 double error= sdts - ticks + j*0.5;
3329 st->info->duration_error[j][0][i] += error;
3330 st->info->duration_error[j][1][i] += error*error;
3334 st->info->duration_count++;
3335 st->info->rfps_duration_sum += duration;
3337 if (st->info->duration_count % 10 == 0) {
3338 int n = st->info->duration_count;
3339 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3340 if (st->info->duration_error[0][1][i] < 1e10) {
3341 double a0 = st->info->duration_error[0][0][i] / n;
3342 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3343 double a1 = st->info->duration_error[1][0][i] / n;
3344 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3345 if (error0 > 0.04 && error1 > 0.04) {
3346 st->info->duration_error[0][1][i] = 2e10;
3347 st->info->duration_error[1][1][i] = 2e10;
3353 // ignore the first 4 values, they might have some random jitter
3354 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3355 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3357 if (ts != AV_NOPTS_VALUE)
3358 st->info->last_dts = ts;
3363 void ff_rfps_calculate(AVFormatContext *ic)
3367 for (i = 0; i < ic->nb_streams; i++) {
3368 AVStream *st = ic->streams[i];
3370 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3372 // the check for tb_unreliable() is not completely correct, since this is not about handling
3373 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3374 // ipmovie.c produces.
3375 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)
3376 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);
3377 if (st->info->duration_count>1 && !st->r_frame_rate.num
3378 && tb_unreliable(st->internal->avctx)) {
3380 double best_error= 0.01;
3381 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3383 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3386 if (st->info->codec_info_duration &&
3387 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3389 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3392 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3395 for (k= 0; k<2; k++) {
3396 int n = st->info->duration_count;
3397 double a= st->info->duration_error[k][0][j] / n;
3398 double error= st->info->duration_error[k][1][j]/n - a*a;
3400 if (error < best_error && best_error> 0.000000001) {
3402 num = get_std_framerate(j);
3405 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3408 // do not increase frame rate by more than 1 % in order to match a standard rate.
3409 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3410 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3412 if ( !st->avg_frame_rate.num
3413 && st->r_frame_rate.num && st->info->rfps_duration_sum
3414 && st->info->codec_info_duration <= 0
3415 && st->info->duration_count > 2
3416 && 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
3418 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3419 st->avg_frame_rate = st->r_frame_rate;
3422 av_freep(&st->info->duration_error);
3423 st->info->last_dts = AV_NOPTS_VALUE;
3424 st->info->duration_count = 0;
3425 st->info->rfps_duration_sum = 0;
3429 static int extract_extradata_check(AVStream *st)
3431 const AVBitStreamFilter *f;
3433 f = av_bsf_get_by_name("extract_extradata");
3438 const enum AVCodecID *ids;
3439 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3440 if (*ids == st->codecpar->codec_id)
3447 static int extract_extradata_init(AVStream *st)
3449 AVStreamInternal *i = st->internal;
3450 const AVBitStreamFilter *f;
3453 f = av_bsf_get_by_name("extract_extradata");
3457 /* check that the codec id is supported */
3458 ret = extract_extradata_check(st);
3462 i->extract_extradata.pkt = av_packet_alloc();
3463 if (!i->extract_extradata.pkt)
3464 return AVERROR(ENOMEM);
3466 ret = av_bsf_alloc(f, &i->extract_extradata.bsf);
3470 ret = avcodec_parameters_copy(i->extract_extradata.bsf->par_in,
3475 i->extract_extradata.bsf->time_base_in = st->time_base;
3477 /* if init fails here, we assume extracting extradata is just not
3478 * supported for this codec, so we return success */
3479 ret = av_bsf_init(i->extract_extradata.bsf);
3481 av_bsf_free(&i->extract_extradata.bsf);
3486 i->extract_extradata.inited = 1;
3490 av_bsf_free(&i->extract_extradata.bsf);
3491 av_packet_free(&i->extract_extradata.pkt);
3495 static int extract_extradata(AVStream *st, AVPacket *pkt)
3497 AVStreamInternal *i = st->internal;
3501 if (!i->extract_extradata.inited) {
3502 ret = extract_extradata_init(st);
3507 if (i->extract_extradata.inited && !i->extract_extradata.bsf)
3510 pkt_ref = i->extract_extradata.pkt;
3511 ret = av_packet_ref(pkt_ref, pkt);
3515 ret = av_bsf_send_packet(i->extract_extradata.bsf, pkt_ref);
3517 av_packet_unref(pkt_ref);
3521 while (ret >= 0 && !i->avctx->extradata) {
3525 ret = av_bsf_receive_packet(i->extract_extradata.bsf, pkt_ref);
3527 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3532 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3536 i->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3537 if (!i->avctx->extradata) {
3538 av_packet_unref(pkt_ref);
3539 return AVERROR(ENOMEM);
3541 memcpy(i->avctx->extradata, extradata, extradata_size);
3542 i->avctx->extradata_size = extradata_size;
3544 av_packet_unref(pkt_ref);
3550 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3552 int i, count = 0, ret = 0, j;
3555 AVCodecContext *avctx;
3556 AVPacket pkt1, *pkt;
3557 int64_t old_offset = avio_tell(ic->pb);
3558 // new streams might appear, no options for those
3559 int orig_nb_streams = ic->nb_streams;
3561 int64_t max_analyze_duration = ic->max_analyze_duration;
3562 int64_t max_stream_analyze_duration;
3563 int64_t max_subtitle_analyze_duration;
3564 int64_t probesize = ic->probesize;
3565 int eof_reached = 0;
3566 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3568 flush_codecs = probesize > 0;
3570 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3572 max_stream_analyze_duration = max_analyze_duration;
3573 max_subtitle_analyze_duration = max_analyze_duration;
3574 if (!max_analyze_duration) {
3575 max_stream_analyze_duration =
3576 max_analyze_duration = 5*AV_TIME_BASE;
3577 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3578 if (!strcmp(ic->iformat->name, "flv"))
3579 max_stream_analyze_duration = 90*AV_TIME_BASE;
3580 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3581 max_stream_analyze_duration = 7*AV_TIME_BASE;
3585 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3586 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3588 for (i = 0; i < ic->nb_streams; i++) {
3589 const AVCodec *codec;
3590 AVDictionary *thread_opt = NULL;
3591 st = ic->streams[i];
3592 avctx = st->internal->avctx;
3594 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3595 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3596 /* if (!st->time_base.num)
3598 if (!avctx->time_base.num)
3599 avctx->time_base = st->time_base;
3602 /* check if the caller has overridden the codec id */
3603 #if FF_API_LAVF_AVCTX
3604 FF_DISABLE_DEPRECATION_WARNINGS
3605 if (st->codec->codec_id != st->internal->orig_codec_id) {
3606 st->codecpar->codec_id = st->codec->codec_id;
3607 st->codecpar->codec_type = st->codec->codec_type;
3608 st->internal->orig_codec_id = st->codec->codec_id;
3610 FF_ENABLE_DEPRECATION_WARNINGS
3612 // only for the split stuff
3613 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3614 st->parser = av_parser_init(st->codecpar->codec_id);
3616 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3617 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3618 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3619 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3621 } else if (st->need_parsing) {
3622 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3623 "%s, packets or times may be invalid.\n",
3624 avcodec_get_name(st->codecpar->codec_id));
3628 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3629 st->internal->orig_codec_id = st->codecpar->codec_id;
3631 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3633 goto find_stream_info_err;
3634 if (st->request_probe <= 0)
3635 st->internal->avctx_inited = 1;
3637 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3639 /* Force thread count to 1 since the H.264 decoder will not extract
3640 * SPS and PPS to extradata during multi-threaded decoding. */
3641 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3643 if (ic->codec_whitelist)
3644 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3646 /* Ensure that subtitle_header is properly set. */
3647 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3648 && codec && !avctx->codec) {
3649 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3650 av_log(ic, AV_LOG_WARNING,
3651 "Failed to open codec in %s\n",__FUNCTION__);
3654 // Try to just open decoders, in case this is enough to get parameters.
3655 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3656 if (codec && !avctx->codec)
3657 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3658 av_log(ic, AV_LOG_WARNING,
3659 "Failed to open codec in %s\n",__FUNCTION__);
3662 av_dict_free(&thread_opt);
3665 for (i = 0; i < ic->nb_streams; i++) {
3666 #if FF_API_R_FRAME_RATE
3667 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3669 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3670 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3675 int analyzed_all_streams;
3676 if (ff_check_interrupt(&ic->interrupt_callback)) {
3678 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3682 /* check if one codec still needs to be handled */
3683 for (i = 0; i < ic->nb_streams; i++) {
3684 int fps_analyze_framecount = 20;
3687 st = ic->streams[i];
3688 if (!has_codec_parameters(st, NULL))
3690 /* If the timebase is coarse (like the usual millisecond precision
3691 * of mkv), we need to analyze more frames to reliably arrive at
3692 * the correct fps. */
3693 if (av_q2d(st->time_base) > 0.0005)
3694 fps_analyze_framecount *= 2;
3695 if (!tb_unreliable(st->internal->avctx))
3696 fps_analyze_framecount = 0;
3697 if (ic->fps_probe_size >= 0)
3698 fps_analyze_framecount = ic->fps_probe_size;
3699 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3700 fps_analyze_framecount = 0;
3701 /* variable fps and no guess at the real fps */
3702 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3703 st->info->codec_info_duration_fields/2 :
3704 st->info->duration_count;
3705 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3706 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3707 if (count < fps_analyze_framecount)
3710 // Look at the first 3 frames if there is evidence of frame delay
3711 // but the decoder delay is not set.
3712 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3714 if (!st->internal->avctx->extradata &&
3715 (!st->internal->extract_extradata.inited ||
3716 st->internal->extract_extradata.bsf) &&
3717 extract_extradata_check(st))
3719 if (st->first_dts == AV_NOPTS_VALUE &&
3720 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3721 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3722 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3723 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3726 analyzed_all_streams = 0;
3727 if (!missing_streams || !*missing_streams)
3728 if (i == ic->nb_streams) {
3729 analyzed_all_streams = 1;
3730 /* NOTE: If the format has no header, then we need to read some
3731 * packets to get most of the streams, so we cannot stop here. */
3732 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3733 /* If we found the info for all the codecs, we can stop. */
3735 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3740 /* We did not get all the codec info, but we read too much data. */
3741 if (read_size >= probesize) {
3743 av_log(ic, AV_LOG_DEBUG,
3744 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3745 for (i = 0; i < ic->nb_streams; i++)
3746 if (!ic->streams[i]->r_frame_rate.num &&
3747 ic->streams[i]->info->duration_count <= 1 &&
3748 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3749 strcmp(ic->iformat->name, "image2"))
3750 av_log(ic, AV_LOG_WARNING,
3751 "Stream #%d: not enough frames to estimate rate; "
3752 "consider increasing probesize\n", i);
3756 /* NOTE: A new stream can be added there if no header in file
3757 * (AVFMTCTX_NOHEADER). */
3758 ret = read_frame_internal(ic, &pkt1);
3759 if (ret == AVERROR(EAGAIN))
3770 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3771 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3772 &ic->internal->packet_buffer_end,
3775 goto find_stream_info_err;
3778 st = ic->streams[pkt->stream_index];
3779 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3780 read_size += pkt->size;
3782 avctx = st->internal->avctx;
3783 if (!st->internal->avctx_inited) {
3784 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3786 goto find_stream_info_err;
3787 st->internal->avctx_inited = 1;
3790 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3791 /* check for non-increasing dts */
3792 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3793 st->info->fps_last_dts >= pkt->dts) {
3794 av_log(ic, AV_LOG_DEBUG,
3795 "Non-increasing DTS in stream %d: packet %d with DTS "
3796 "%"PRId64", packet %d with DTS %"PRId64"\n",
3797 st->index, st->info->fps_last_dts_idx,
3798 st->info->fps_last_dts, st->codec_info_nb_frames,
3800 st->info->fps_first_dts =
3801 st->info->fps_last_dts = AV_NOPTS_VALUE;
3803 /* Check for a discontinuity in dts. If the difference in dts
3804 * is more than 1000 times the average packet duration in the
3805 * sequence, we treat it as a discontinuity. */
3806 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3807 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3808 (pkt->dts - st->info->fps_last_dts) / 1000 >
3809 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3810 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3811 av_log(ic, AV_LOG_WARNING,
3812 "DTS discontinuity in stream %d: packet %d with DTS "
3813 "%"PRId64", packet %d with DTS %"PRId64"\n",
3814 st->index, st->info->fps_last_dts_idx,
3815 st->info->fps_last_dts, st->codec_info_nb_frames,
3817 st->info->fps_first_dts =
3818 st->info->fps_last_dts = AV_NOPTS_VALUE;
3821 /* update stored dts values */
3822 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3823 st->info->fps_first_dts = pkt->dts;
3824 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3826 st->info->fps_last_dts = pkt->dts;
3827 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3829 if (st->codec_info_nb_frames>1) {
3833 if (st->time_base.den > 0)
3834 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3835 if (st->avg_frame_rate.num > 0)
3836 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3839 && st->codec_info_nb_frames>30
3840 && st->info->fps_first_dts != AV_NOPTS_VALUE
3841 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3842 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3844 if (analyzed_all_streams) limit = max_analyze_duration;
3845 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3846 else limit = max_stream_analyze_duration;
3849 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3851 t, pkt->stream_index);
3852 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3853 av_packet_unref(pkt);
3856 if (pkt->duration) {
3857 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3858 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3860 st->info->codec_info_duration += pkt->duration;
3861 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3864 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3865 #if FF_API_R_FRAME_RATE
3866 ff_rfps_add_frame(ic, st, pkt->dts);
3868 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3869 st->info->frame_delay_evidence = 1;
3871 if (!st->internal->avctx->extradata) {
3872 ret = extract_extradata(st, pkt);
3874 goto find_stream_info_err;
3877 /* If still no information, we try to open the codec and to
3878 * decompress the frame. We try to avoid that in most cases as
3879 * it takes longer and uses more memory. For MPEG-4, we need to
3880 * decompress for QuickTime.
3882 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3883 * least one frame of codec data, this makes sure the codec initializes
3884 * the channel configuration and does not only trust the values from
3886 try_decode_frame(ic, st, pkt,
3887 (options && i < orig_nb_streams) ? &options[i] : NULL);
3889 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3890 av_packet_unref(pkt);
3892 st->codec_info_nb_frames++;
3898 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3899 st = ic->streams[stream_index];
3900 avctx = st->internal->avctx;
3901 if (!has_codec_parameters(st, NULL)) {
3902 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3903 if (codec && !avctx->codec) {
3904 AVDictionary *opts = NULL;
3905 if (ic->codec_whitelist)
3906 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3907 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3908 av_log(ic, AV_LOG_WARNING,
3909 "Failed to open codec in %s\n",__FUNCTION__);
3910 av_dict_free(&opts);
3914 // EOF already reached while reading the stream above.
3915 // So continue with reoordering DTS with whatever delay we have.
3916 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3917 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3923 AVPacket empty_pkt = { 0 };
3925 av_init_packet(&empty_pkt);
3927 for (i = 0; i < ic->nb_streams; i++) {
3929 st = ic->streams[i];
3931 /* flush the decoders */
3932 if (st->info->found_decoder == 1) {
3934 err = try_decode_frame(ic, st, &empty_pkt,
3935 (options && i < orig_nb_streams)
3936 ? &options[i] : NULL);
3937 } while (err > 0 && !has_codec_parameters(st, NULL));
3940 av_log(ic, AV_LOG_INFO,
3941 "decoding for stream %d failed\n", st->index);
3947 ff_rfps_calculate(ic);
3949 for (i = 0; i < ic->nb_streams; i++) {
3950 st = ic->streams[i];
3951 avctx = st->internal->avctx;
3952 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3953 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3954 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3955 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3956 avctx->codec_tag= tag;
3959 /* estimate average framerate if not set by demuxer */
3960 if (st->info->codec_info_duration_fields &&
3961 !st->avg_frame_rate.num &&
3962 st->info->codec_info_duration) {
3964 double best_error = 0.01;
3965 AVRational codec_frame_rate = avctx->framerate;
3967 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3968 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3969 st->info->codec_info_duration < 0)
3971 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3972 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3973 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3975 /* Round guessed framerate to a "standard" framerate if it's
3976 * within 1% of the original estimate. */
3977 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3978 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3979 double error = fabs(av_q2d(st->avg_frame_rate) /
3980 av_q2d(std_fps) - 1);
3982 if (error < best_error) {
3984 best_fps = std_fps.num;
3987 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
3988 error = fabs(av_q2d(codec_frame_rate) /
3989 av_q2d(std_fps) - 1);
3990 if (error < best_error) {
3992 best_fps = std_fps.num;
3997 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3998 best_fps, 12 * 1001, INT_MAX);
4001 if (!st->r_frame_rate.num) {
4002 if ( avctx->time_base.den * (int64_t) st->time_base.num
4003 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4004 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4005 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4007 st->r_frame_rate.num = st->time_base.den;
4008 st->r_frame_rate.den = st->time_base.num;
4011 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4012 AVRational hw_ratio = { avctx->height, avctx->width };
4013 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4016 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4017 if (!avctx->bits_per_coded_sample)
4018 avctx->bits_per_coded_sample =
4019 av_get_bits_per_sample(avctx->codec_id);
4020 // set stream disposition based on audio service type
4021 switch (avctx->audio_service_type) {
4022 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4023 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4025 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4026 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4028 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4029 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4031 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4032 st->disposition = AV_DISPOSITION_COMMENT;
4034 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4035 st->disposition = AV_DISPOSITION_KARAOKE;
4042 estimate_timings(ic, old_offset);
4044 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4046 if (ret >= 0 && ic->nb_streams)
4047 /* We could not have all the codec parameters before EOF. */
4049 for (i = 0; i < ic->nb_streams; i++) {
4051 st = ic->streams[i];
4053 /* if no packet was ever seen, update context now for has_codec_parameters */
4054 if (!st->internal->avctx_inited) {
4055 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4056 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4057 st->codecpar->format = st->internal->avctx->sample_fmt;
4058 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4060 goto find_stream_info_err;
4062 if (!has_codec_parameters(st, &errmsg)) {
4064 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4065 av_log(ic, AV_LOG_WARNING,
4066 "Could not find codec parameters for stream %d (%s): %s\n"
4067 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4074 compute_chapters_end(ic);
4076 /* update the stream parameters from the internal codec contexts */
4077 for (i = 0; i < ic->nb_streams; i++) {
4078 st = ic->streams[i];
4080 if (st->internal->avctx_inited) {
4081 int orig_w = st->codecpar->width;
4082 int orig_h = st->codecpar->height;
4083 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4085 goto find_stream_info_err;
4087 // The decoder might reduce the video size by the lowres factor.
4088 if (st->internal->avctx->lowres && orig_w) {
4089 st->codecpar->width = orig_w;
4090 st->codecpar->height = orig_h;
4095 #if FF_API_LAVF_AVCTX
4096 FF_DISABLE_DEPRECATION_WARNINGS
4097 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4099 goto find_stream_info_err;
4102 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4103 // by the lowres factor.
4104 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4105 st->codec->lowres = st->internal->avctx->lowres;
4106 st->codec->width = st->internal->avctx->width;
4107 st->codec->height = st->internal->avctx->height;
4111 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4112 st->codec->time_base = st->internal->avctx->time_base;
4113 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4115 st->codec->framerate = st->avg_frame_rate;
4117 if (st->internal->avctx->subtitle_header) {
4118 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4119 if (!st->codec->subtitle_header)
4120 goto find_stream_info_err;
4121 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4122 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4123 st->codec->subtitle_header_size);
4126 // Fields unavailable in AVCodecParameters
4127 st->codec->coded_width = st->internal->avctx->coded_width;
4128 st->codec->coded_height = st->internal->avctx->coded_height;
4129 st->codec->properties = st->internal->avctx->properties;
4130 FF_ENABLE_DEPRECATION_WARNINGS
4133 st->internal->avctx_inited = 0;
4136 find_stream_info_err:
4137 for (i = 0; i < ic->nb_streams; i++) {
4138 st = ic->streams[i];
4140 av_freep(&st->info->duration_error);
4141 avcodec_close(ic->streams[i]->internal->avctx);
4142 av_freep(&ic->streams[i]->info);
4143 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4144 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4147 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4148 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4152 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4156 for (i = 0; i < ic->nb_programs; i++) {
4157 if (ic->programs[i] == last) {
4161 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4162 if (ic->programs[i]->stream_index[j] == s)
4163 return ic->programs[i];
4169 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4170 int wanted_stream_nb, int related_stream,
4171 AVCodec **decoder_ret, int flags)
4173 int i, nb_streams = ic->nb_streams;
4174 int ret = AVERROR_STREAM_NOT_FOUND;
4175 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4176 int count, multiframe, disposition;
4177 int64_t best_bitrate = -1;
4179 unsigned *program = NULL;
4180 const AVCodec *decoder = NULL, *best_decoder = NULL;
4182 if (related_stream >= 0 && wanted_stream_nb < 0) {
4183 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4185 program = p->stream_index;
4186 nb_streams = p->nb_stream_indexes;
4189 for (i = 0; i < nb_streams; i++) {
4190 int real_stream_index = program ? program[i] : i;
4191 AVStream *st = ic->streams[real_stream_index];
4192 AVCodecParameters *par = st->codecpar;
4193 if (par->codec_type != type)
4195 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4197 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4200 decoder = find_decoder(ic, st, par->codec_id);
4203 ret = AVERROR_DECODER_NOT_FOUND;
4207 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED));
4208 count = st->codec_info_nb_frames;
4209 bitrate = par->bit_rate;
4210 multiframe = FFMIN(5, count);
4211 if ((best_disposition > disposition) ||
4212 (best_disposition == disposition && best_multiframe > multiframe) ||
4213 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4214 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4216 best_disposition = disposition;
4218 best_bitrate = bitrate;
4219 best_multiframe = multiframe;
4220 ret = real_stream_index;
4221 best_decoder = decoder;
4222 if (program && i == nb_streams - 1 && ret < 0) {
4224 nb_streams = ic->nb_streams;
4225 /* no related stream found, try again with everything */
4230 *decoder_ret = (AVCodec*)best_decoder;
4234 /*******************************************************/
4236 int av_read_play(AVFormatContext *s)
4238 if (s->iformat->read_play)
4239 return s->iformat->read_play(s);
4241 return avio_pause(s->pb, 0);
4242 return AVERROR(ENOSYS);
4245 int av_read_pause(AVFormatContext *s)
4247 if (s->iformat->read_pause)
4248 return s->iformat->read_pause(s);
4250 return avio_pause(s->pb, 1);
4251 return AVERROR(ENOSYS);
4254 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4259 dst->time_base = src->time_base;
4260 dst->nb_frames = src->nb_frames;
4261 dst->disposition = src->disposition;
4262 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4263 dst->avg_frame_rate = src->avg_frame_rate;
4264 dst->r_frame_rate = src->r_frame_rate;
4266 av_dict_free(&dst->metadata);
4267 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4271 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4275 /* Free existing side data*/
4276 for (i = 0; i < dst->nb_side_data; i++)
4277 av_free(dst->side_data[i].data);
4278 av_freep(&dst->side_data);
4279 dst->nb_side_data = 0;
4281 /* Copy side data if present */
4282 if (src->nb_side_data) {
4283 dst->side_data = av_mallocz_array(src->nb_side_data,
4284 sizeof(AVPacketSideData));
4285 if (!dst->side_data)
4286 return AVERROR(ENOMEM);
4287 dst->nb_side_data = src->nb_side_data;
4289 for (i = 0; i < src->nb_side_data; i++) {
4290 uint8_t *data = av_memdup(src->side_data[i].data,
4291 src->side_data[i].size);
4293 return AVERROR(ENOMEM);
4294 dst->side_data[i].type = src->side_data[i].type;
4295 dst->side_data[i].size = src->side_data[i].size;
4296 dst->side_data[i].data = data;
4300 #if FF_API_LAVF_FFSERVER
4301 FF_DISABLE_DEPRECATION_WARNINGS
4302 av_freep(&dst->recommended_encoder_configuration);
4303 if (src->recommended_encoder_configuration) {
4304 const char *conf_str = src->recommended_encoder_configuration;
4305 dst->recommended_encoder_configuration = av_strdup(conf_str);
4306 if (!dst->recommended_encoder_configuration)
4307 return AVERROR(ENOMEM);
4309 FF_ENABLE_DEPRECATION_WARNINGS
4315 static void free_stream(AVStream **pst)
4317 AVStream *st = *pst;
4323 for (i = 0; i < st->nb_side_data; i++)
4324 av_freep(&st->side_data[i].data);
4325 av_freep(&st->side_data);
4328 av_parser_close(st->parser);
4330 if (st->attached_pic.data)
4331 av_packet_unref(&st->attached_pic);
4334 avcodec_free_context(&st->internal->avctx);
4335 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4336 av_bsf_free(&st->internal->bsfcs[i]);
4337 av_freep(&st->internal->bsfcs);
4339 av_freep(&st->internal->priv_pts);
4340 av_bsf_free(&st->internal->extract_extradata.bsf);
4341 av_packet_free(&st->internal->extract_extradata.pkt);
4343 av_freep(&st->internal);
4345 av_dict_free(&st->metadata);
4346 avcodec_parameters_free(&st->codecpar);
4347 av_freep(&st->probe_data.buf);
4348 av_freep(&st->index_entries);
4349 #if FF_API_LAVF_AVCTX
4350 FF_DISABLE_DEPRECATION_WARNINGS
4351 avcodec_free_context(&st->codec);
4352 FF_ENABLE_DEPRECATION_WARNINGS
4354 av_freep(&st->priv_data);
4356 av_freep(&st->info->duration_error);
4357 av_freep(&st->info);
4358 #if FF_API_LAVF_FFSERVER
4359 FF_DISABLE_DEPRECATION_WARNINGS
4360 av_freep(&st->recommended_encoder_configuration);
4361 FF_ENABLE_DEPRECATION_WARNINGS
4367 void ff_free_stream(AVFormatContext *s, AVStream *st)
4369 av_assert0(s->nb_streams>0);
4370 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4372 free_stream(&s->streams[ --s->nb_streams ]);
4375 void avformat_free_context(AVFormatContext *s)
4383 if (s->iformat && s->iformat->priv_class && s->priv_data)
4384 av_opt_free(s->priv_data);
4385 if (s->oformat && s->oformat->priv_class && s->priv_data)
4386 av_opt_free(s->priv_data);
4388 for (i = s->nb_streams - 1; i >= 0; i--)
4389 ff_free_stream(s, s->streams[i]);
4392 for (i = s->nb_programs - 1; i >= 0; i--) {
4393 av_dict_free(&s->programs[i]->metadata);
4394 av_freep(&s->programs[i]->stream_index);
4395 av_freep(&s->programs[i]);
4397 av_freep(&s->programs);
4398 av_freep(&s->priv_data);
4399 while (s->nb_chapters--) {
4400 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4401 av_freep(&s->chapters[s->nb_chapters]);
4403 av_freep(&s->chapters);
4404 av_dict_free(&s->metadata);
4405 av_dict_free(&s->internal->id3v2_meta);
4406 av_freep(&s->streams);
4407 flush_packet_queue(s);
4408 av_freep(&s->internal);
4413 void avformat_close_input(AVFormatContext **ps)
4424 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4425 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4428 flush_packet_queue(s);
4431 if (s->iformat->read_close)
4432 s->iformat->read_close(s);
4434 avformat_free_context(s);
4441 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4447 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4448 if (s->max_streams < INT_MAX/sizeof(*streams))
4449 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);
4452 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4455 s->streams = streams;
4457 st = av_mallocz(sizeof(AVStream));
4460 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4464 st->info->last_dts = AV_NOPTS_VALUE;
4466 #if FF_API_LAVF_AVCTX
4467 FF_DISABLE_DEPRECATION_WARNINGS
4468 st->codec = avcodec_alloc_context3(c);
4474 FF_ENABLE_DEPRECATION_WARNINGS
4477 st->internal = av_mallocz(sizeof(*st->internal));
4481 st->codecpar = avcodec_parameters_alloc();
4485 st->internal->avctx = avcodec_alloc_context3(NULL);
4486 if (!st->internal->avctx)
4490 #if FF_API_LAVF_AVCTX
4491 FF_DISABLE_DEPRECATION_WARNINGS
4492 /* no default bitrate if decoding */
4493 st->codec->bit_rate = 0;
4494 FF_ENABLE_DEPRECATION_WARNINGS
4497 /* default pts setting is MPEG-like */
4498 avpriv_set_pts_info(st, 33, 1, 90000);
4499 /* we set the current DTS to 0 so that formats without any timestamps
4500 * but durations get some timestamps, formats with some unknown
4501 * timestamps have their first few packets buffered and the
4502 * timestamps corrected before they are returned to the user */
4503 st->cur_dts = RELATIVE_TS_BASE;
4505 st->cur_dts = AV_NOPTS_VALUE;
4508 st->index = s->nb_streams;
4509 st->start_time = AV_NOPTS_VALUE;
4510 st->duration = AV_NOPTS_VALUE;
4511 st->first_dts = AV_NOPTS_VALUE;
4512 st->probe_packets = MAX_PROBE_PACKETS;
4513 st->pts_wrap_reference = AV_NOPTS_VALUE;
4514 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4516 st->last_IP_pts = AV_NOPTS_VALUE;
4517 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4518 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4519 st->pts_buffer[i] = AV_NOPTS_VALUE;
4521 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4523 #if FF_API_R_FRAME_RATE
4524 st->info->last_dts = AV_NOPTS_VALUE;
4526 st->info->fps_first_dts = AV_NOPTS_VALUE;
4527 st->info->fps_last_dts = AV_NOPTS_VALUE;
4529 st->inject_global_side_data = s->internal->inject_global_side_data;
4531 st->internal->need_context_update = 1;
4533 s->streams[s->nb_streams++] = st;
4540 AVProgram *av_new_program(AVFormatContext *ac, int id)
4542 AVProgram *program = NULL;
4545 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4547 for (i = 0; i < ac->nb_programs; i++)
4548 if (ac->programs[i]->id == id)
4549 program = ac->programs[i];
4552 program = av_mallocz(sizeof(AVProgram));
4555 dynarray_add(&ac->programs, &ac->nb_programs, program);
4556 program->discard = AVDISCARD_NONE;
4559 program->pts_wrap_reference = AV_NOPTS_VALUE;
4560 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4562 program->start_time =
4563 program->end_time = AV_NOPTS_VALUE;
4568 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4569 int64_t start, int64_t end, const char *title)
4571 AVChapter *chapter = NULL;
4574 if (end != AV_NOPTS_VALUE && start > end) {
4575 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4579 for (i = 0; i < s->nb_chapters; i++)
4580 if (s->chapters[i]->id == id)
4581 chapter = s->chapters[i];
4584 chapter = av_mallocz(sizeof(AVChapter));
4587 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4589 av_dict_set(&chapter->metadata, "title", title, 0);
4591 chapter->time_base = time_base;
4592 chapter->start = start;
4598 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4601 AVProgram *program = NULL;
4604 if (idx >= ac->nb_streams) {
4605 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4609 for (i = 0; i < ac->nb_programs; i++) {
4610 if (ac->programs[i]->id != progid)
4612 program = ac->programs[i];
4613 for (j = 0; j < program->nb_stream_indexes; j++)
4614 if (program->stream_index[j] == idx)
4617 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4620 program->stream_index = tmp;
4621 program->stream_index[program->nb_stream_indexes++] = idx;
4626 uint64_t ff_ntp_time(void)
4628 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4631 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4634 char *q, buf1[20], c;
4635 int nd, len, percentd_found;
4647 while (av_isdigit(*p))
4648 nd = nd * 10 + *p++ - '0';
4650 } while (av_isdigit(c));
4656 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4661 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4663 if ((q - buf + len) > buf_size - 1)
4665 memcpy(q, buf1, len);
4673 if ((q - buf) < buf_size - 1)
4677 if (!percentd_found)
4686 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4688 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4691 void av_url_split(char *proto, int proto_size,
4692 char *authorization, int authorization_size,
4693 char *hostname, int hostname_size,
4694 int *port_ptr, char *path, int path_size, const char *url)
4696 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4702 if (authorization_size > 0)
4703 authorization[0] = 0;
4704 if (hostname_size > 0)
4709 /* parse protocol */
4710 if ((p = strchr(url, ':'))) {
4711 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4718 /* no protocol means plain filename */
4719 av_strlcpy(path, url, path_size);
4723 /* separate path from hostname */
4724 ls = strchr(p, '/');
4725 ls2 = strchr(p, '?');
4729 ls = FFMIN(ls, ls2);
4731 av_strlcpy(path, ls, path_size);
4733 ls = &p[strlen(p)]; // XXX
4735 /* the rest is hostname, use that to parse auth/port */
4737 /* authorization (user[:pass]@hostname) */
4739 while ((at = strchr(p, '@')) && at < ls) {
4740 av_strlcpy(authorization, at2,
4741 FFMIN(authorization_size, at + 1 - at2));
4742 p = at + 1; /* skip '@' */
4745 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4747 av_strlcpy(hostname, p + 1,
4748 FFMIN(hostname_size, brk - p));
4749 if (brk[1] == ':' && port_ptr)
4750 *port_ptr = atoi(brk + 2);
4751 } else if ((col = strchr(p, ':')) && col < ls) {
4752 av_strlcpy(hostname, p,
4753 FFMIN(col + 1 - p, hostname_size));
4755 *port_ptr = atoi(col + 1);
4757 av_strlcpy(hostname, p,
4758 FFMIN(ls + 1 - p, hostname_size));
4762 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4765 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4768 'C', 'D', 'E', 'F' };
4769 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4772 'c', 'd', 'e', 'f' };
4773 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4775 for (i = 0; i < s; i++) {
4776 buff[i * 2] = hex_table[src[i] >> 4];
4777 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4783 int ff_hex_to_data(uint8_t *data, const char *p)
4790 p += strspn(p, SPACE_CHARS);
4793 c = av_toupper((unsigned char) *p++);
4794 if (c >= '0' && c <= '9')
4796 else if (c >= 'A' && c <= 'F')
4811 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4812 unsigned int pts_num, unsigned int pts_den)
4815 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4816 if (new_tb.num != pts_num)
4817 av_log(NULL, AV_LOG_DEBUG,
4818 "st:%d removing common factor %d from timebase\n",
4819 s->index, pts_num / new_tb.num);
4821 av_log(NULL, AV_LOG_WARNING,
4822 "st:%d has too large timebase, reducing\n", s->index);
4824 if (new_tb.num <= 0 || new_tb.den <= 0) {
4825 av_log(NULL, AV_LOG_ERROR,
4826 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4827 new_tb.num, new_tb.den,
4831 s->time_base = new_tb;
4832 #if FF_API_LAVF_AVCTX
4833 FF_DISABLE_DEPRECATION_WARNINGS
4834 s->codec->pkt_timebase = new_tb;
4835 FF_ENABLE_DEPRECATION_WARNINGS
4837 s->internal->avctx->pkt_timebase = new_tb;
4838 s->pts_wrap_bits = pts_wrap_bits;
4841 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4844 const char *ptr = str;
4846 /* Parse key=value pairs. */
4849 char *dest = NULL, *dest_end;
4850 int key_len, dest_len = 0;
4852 /* Skip whitespace and potential commas. */
4853 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4860 if (!(ptr = strchr(key, '=')))
4863 key_len = ptr - key;
4865 callback_get_buf(context, key, key_len, &dest, &dest_len);
4866 dest_end = dest + dest_len - 1;
4870 while (*ptr && *ptr != '\"') {
4874 if (dest && dest < dest_end)
4878 if (dest && dest < dest_end)
4886 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4887 if (dest && dest < dest_end)
4895 int ff_find_stream_index(AVFormatContext *s, int id)
4898 for (i = 0; i < s->nb_streams; i++)
4899 if (s->streams[i]->id == id)
4904 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4908 unsigned int codec_tag;
4909 if (ofmt->query_codec)
4910 return ofmt->query_codec(codec_id, std_compliance);
4911 else if (ofmt->codec_tag)
4912 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4913 else if (codec_id == ofmt->video_codec ||
4914 codec_id == ofmt->audio_codec ||
4915 codec_id == ofmt->subtitle_codec ||
4916 codec_id == ofmt->data_codec)
4919 return AVERROR_PATCHWELCOME;
4922 int avformat_network_init(void)
4926 if ((ret = ff_network_init()) < 0)
4928 if ((ret = ff_tls_init()) < 0)
4934 int avformat_network_deinit(void)
4943 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4944 uint64_t channel_layout, int32_t sample_rate,
4945 int32_t width, int32_t height)
4951 return AVERROR(EINVAL);
4954 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4956 if (channel_layout) {
4958 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4962 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4964 if (width || height) {
4966 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4968 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4970 return AVERROR(ENOMEM);
4971 bytestream_put_le32(&data, flags);
4973 bytestream_put_le32(&data, channels);
4975 bytestream_put_le64(&data, channel_layout);
4977 bytestream_put_le32(&data, sample_rate);
4978 if (width || height) {
4979 bytestream_put_le32(&data, width);
4980 bytestream_put_le32(&data, height);
4985 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4987 AVRational undef = {0, 1};
4988 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4989 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4990 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4992 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4993 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4994 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4995 stream_sample_aspect_ratio = undef;
4997 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4998 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4999 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5000 frame_sample_aspect_ratio = undef;
5002 if (stream_sample_aspect_ratio.num)
5003 return stream_sample_aspect_ratio;
5005 return frame_sample_aspect_ratio;
5008 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5010 AVRational fr = st->r_frame_rate;
5011 AVRational codec_fr = st->internal->avctx->framerate;
5012 AVRational avg_fr = st->avg_frame_rate;
5014 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5015 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5020 if (st->internal->avctx->ticks_per_frame > 1) {
5021 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5022 (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))
5029 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5032 if (*spec <= '9' && *spec >= '0') /* opt:index */
5033 return strtol(spec, NULL, 0) == st->index;
5034 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5035 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5036 enum AVMediaType type;
5040 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5041 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5042 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5043 case 'd': type = AVMEDIA_TYPE_DATA; break;
5044 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5045 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5046 default: av_assert0(0);
5048 #if FF_API_LAVF_AVCTX
5049 FF_DISABLE_DEPRECATION_WARNINGS
5050 if (type != st->codecpar->codec_type
5051 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5053 FF_ENABLE_DEPRECATION_WARNINGS
5055 if (type != st->codecpar->codec_type)
5058 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5060 if (*spec++ == ':') { /* possibly followed by :index */
5061 int i, index = strtol(spec, NULL, 0);
5062 for (i = 0; i < s->nb_streams; i++) {
5063 #if FF_API_LAVF_AVCTX
5064 FF_DISABLE_DEPRECATION_WARNINGS
5065 if ((s->streams[i]->codecpar->codec_type == type
5066 || s->streams[i]->codec->codec_type == type
5068 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5070 return i == st->index;
5071 FF_ENABLE_DEPRECATION_WARNINGS
5073 if ((s->streams[i]->codecpar->codec_type == type) &&
5074 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
5076 return i == st->index;
5082 } else if (*spec == 'p' && *(spec + 1) == ':') {
5086 prog_id = strtol(spec, &endptr, 0);
5087 for (i = 0; i < s->nb_programs; i++) {
5088 if (s->programs[i]->id != prog_id)
5091 if (*endptr++ == ':') { // p:<id>:....
5092 if ( *endptr == 'a' || *endptr == 'v' ||
5093 *endptr == 's' || *endptr == 'd') { // p:<id>:<st_type>[:<index>]
5094 enum AVMediaType type;
5096 switch (*endptr++) {
5097 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5098 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5099 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5100 case 'd': type = AVMEDIA_TYPE_DATA; break;
5101 default: av_assert0(0);
5103 if (*endptr++ == ':') { // p:<id>:<st_type>:<index>
5104 int stream_idx = strtol(endptr, NULL, 0), type_counter = 0;
5105 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5106 int stream_index = s->programs[i]->stream_index[j];
5107 if (st->index == s->programs[i]->stream_index[j]) {
5108 #if FF_API_LAVF_AVCTX
5109 FF_DISABLE_DEPRECATION_WARNINGS
5110 return type_counter == stream_idx &&
5111 (type == st->codecpar->codec_type ||
5112 type == st->codec->codec_type);
5113 FF_ENABLE_DEPRECATION_WARNINGS
5115 return type_counter == stream_idx &&
5116 type == st->codecpar->codec_type;
5119 #if FF_API_LAVF_AVCTX
5120 FF_DISABLE_DEPRECATION_WARNINGS
5121 if (type == s->streams[stream_index]->codecpar->codec_type ||
5122 type == s->streams[stream_index]->codec->codec_type)
5124 FF_ENABLE_DEPRECATION_WARNINGS
5126 if (type == s->streams[stream_index]->codecpar->codec_type)
5131 } else { // p:<id>:<st_type>
5132 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5133 if (st->index == s->programs[i]->stream_index[j]) {
5134 #if FF_API_LAVF_AVCTX
5135 FF_DISABLE_DEPRECATION_WARNINGS
5136 return type == st->codecpar->codec_type ||
5137 type == st->codec->codec_type;
5138 FF_ENABLE_DEPRECATION_WARNINGS
5140 return type == st->codecpar->codec_type;
5146 } else if ( *endptr == 'm') { // p:<id>:m:<metadata_spec>
5147 AVDictionaryEntry *tag;
5151 if (*(++endptr) != ':') {
5152 av_log(s, AV_LOG_ERROR, "Invalid stream specifier syntax, missing ':' sign after :m.\n");
5153 return AVERROR(EINVAL);
5156 val = strchr(++endptr, ':');
5157 key = val ? av_strndup(endptr, val - endptr) : av_strdup(endptr);
5159 return AVERROR(ENOMEM);
5161 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5162 if (st->index == s->programs[i]->stream_index[j]) {
5163 tag = av_dict_get(st->metadata, key, NULL, 0);
5164 if (tag && (!val || !strcmp(tag->value, val + 1)))
5173 } else { // p:<id>:<index>
5174 int stream_idx = strtol(endptr, NULL, 0);
5175 return stream_idx >= 0 &&
5176 stream_idx < s->programs[i]->nb_stream_indexes &&
5177 st->index == s->programs[i]->stream_index[stream_idx];
5181 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5182 if (st->index == s->programs[i]->stream_index[j])
5186 } else if (*spec == '#' ||
5187 (*spec == 'i' && *(spec + 1) == ':')) {
5190 spec += 1 + (*spec == 'i');
5191 stream_id = strtol(spec, &endptr, 0);
5193 return stream_id == st->id;
5194 } else if (*spec == 'm' && *(spec + 1) == ':') {
5195 AVDictionaryEntry *tag;
5200 val = strchr(spec, ':');
5202 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5204 return AVERROR(ENOMEM);
5206 tag = av_dict_get(st->metadata, key, NULL, 0);
5208 if (!val || !strcmp(tag->value, val + 1))
5217 } else if (*spec == 'u') {
5218 AVCodecParameters *par = st->codecpar;
5219 #if FF_API_LAVF_AVCTX
5220 FF_DISABLE_DEPRECATION_WARNINGS
5221 AVCodecContext *codec = st->codec;
5222 FF_ENABLE_DEPRECATION_WARNINGS
5225 switch (par->codec_type) {
5226 case AVMEDIA_TYPE_AUDIO:
5227 val = par->sample_rate && par->channels;
5228 #if FF_API_LAVF_AVCTX
5229 val = val || (codec->sample_rate && codec->channels);
5231 if (par->format == AV_SAMPLE_FMT_NONE
5232 #if FF_API_LAVF_AVCTX
5233 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5238 case AVMEDIA_TYPE_VIDEO:
5239 val = par->width && par->height;
5240 #if FF_API_LAVF_AVCTX
5241 val = val || (codec->width && codec->height);
5243 if (par->format == AV_PIX_FMT_NONE
5244 #if FF_API_LAVF_AVCTX
5245 && codec->pix_fmt == AV_PIX_FMT_NONE
5250 case AVMEDIA_TYPE_UNKNOWN:
5257 #if FF_API_LAVF_AVCTX
5258 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
5260 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
5262 } else if (!*spec) /* empty specifier, matches everything */
5265 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5266 return AVERROR(EINVAL);
5269 int ff_generate_avci_extradata(AVStream *st)
5271 static const uint8_t avci100_1080p_extradata[] = {
5273 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5274 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5275 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5276 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5277 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5278 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5279 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5280 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5281 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5283 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5286 static const uint8_t avci100_1080i_extradata[] = {
5288 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5289 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5290 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5291 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5292 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5293 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5294 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5295 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5296 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5297 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5298 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5300 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5303 static const uint8_t avci50_1080p_extradata[] = {
5305 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5306 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5307 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5308 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5309 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5310 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5311 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5312 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5313 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5315 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5318 static const uint8_t avci50_1080i_extradata[] = {
5320 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5321 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5322 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5323 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5324 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5325 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5326 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5327 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5328 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5329 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5330 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5332 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5335 static const uint8_t avci100_720p_extradata[] = {
5337 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5338 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5339 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5340 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5341 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5342 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5343 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5344 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5345 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5346 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5348 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5351 static const uint8_t avci50_720p_extradata[] = {
5353 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5354 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5355 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5356 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5357 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5358 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5359 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5360 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5361 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5363 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5367 const uint8_t *data = NULL;
5370 if (st->codecpar->width == 1920) {
5371 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5372 data = avci100_1080p_extradata;
5373 size = sizeof(avci100_1080p_extradata);
5375 data = avci100_1080i_extradata;
5376 size = sizeof(avci100_1080i_extradata);
5378 } else if (st->codecpar->width == 1440) {
5379 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5380 data = avci50_1080p_extradata;
5381 size = sizeof(avci50_1080p_extradata);
5383 data = avci50_1080i_extradata;
5384 size = sizeof(avci50_1080i_extradata);
5386 } else if (st->codecpar->width == 1280) {
5387 data = avci100_720p_extradata;
5388 size = sizeof(avci100_720p_extradata);
5389 } else if (st->codecpar->width == 960) {
5390 data = avci50_720p_extradata;
5391 size = sizeof(avci50_720p_extradata);
5397 av_freep(&st->codecpar->extradata);
5398 if (ff_alloc_extradata(st->codecpar, size))
5399 return AVERROR(ENOMEM);
5400 memcpy(st->codecpar->extradata, data, size);
5405 uint8_t *av_stream_get_side_data(const AVStream *st,
5406 enum AVPacketSideDataType type, int *size)
5410 for (i = 0; i < st->nb_side_data; i++) {
5411 if (st->side_data[i].type == type) {
5413 *size = st->side_data[i].size;
5414 return st->side_data[i].data;
5420 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5421 uint8_t *data, size_t size)
5423 AVPacketSideData *sd, *tmp;
5426 for (i = 0; i < st->nb_side_data; i++) {
5427 sd = &st->side_data[i];
5429 if (sd->type == type) {
5430 av_freep(&sd->data);
5437 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5438 return AVERROR(ERANGE);
5440 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5442 return AVERROR(ENOMEM);
5445 st->side_data = tmp;
5448 sd = &st->side_data[st->nb_side_data - 1];
5456 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5460 uint8_t *data = av_malloc(size);
5465 ret = av_stream_add_side_data(st, type, data, size);
5474 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5477 const AVBitStreamFilter *bsf;
5479 AVCodecParameters *in_par;
5481 if (!(bsf = av_bsf_get_by_name(name))) {
5482 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5483 return AVERROR_BSF_NOT_FOUND;
5486 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5489 if (st->internal->nb_bsfcs) {
5490 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5491 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5493 in_par = st->codecpar;
5494 bsfc->time_base_in = st->time_base;
5497 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5502 if (args && bsfc->filter->priv_class) {
5503 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5504 const char * shorthand[2] = {NULL};
5507 shorthand[0] = opt->name;
5509 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5515 if ((ret = av_bsf_init(bsfc)) < 0) {
5520 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5525 av_log(NULL, AV_LOG_VERBOSE,
5526 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5527 name, args ? args : "");
5532 FF_DISABLE_DEPRECATION_WARNINGS
5533 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5534 AVBitStreamFilterContext *bsfc)
5538 AVPacket new_pkt = *pkt;
5539 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5540 &new_pkt.data, &new_pkt.size,
5541 pkt->data, pkt->size,
5542 pkt->flags & AV_PKT_FLAG_KEY);
5543 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5544 av_packet_unref(pkt);
5545 memset(pkt, 0, sizeof(*pkt));
5548 if(a == 0 && new_pkt.data != pkt->data) {
5549 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
5551 memcpy(t, new_pkt.data, new_pkt.size);
5552 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5557 a = AVERROR(ENOMEM);
5561 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5562 av_buffer_default_free, NULL, 0);
5564 pkt->side_data = NULL;
5565 pkt->side_data_elems = 0;
5566 av_packet_unref(pkt);
5568 av_freep(&new_pkt.data);
5569 a = AVERROR(ENOMEM);
5573 av_log(codec, AV_LOG_ERROR,
5574 "Failed to open bitstream filter %s for stream %d with codec %s",
5575 bsfc->filter->name, pkt->stream_index,
5576 codec->codec ? codec->codec->name : "copy");
5586 FF_ENABLE_DEPRECATION_WARNINGS
5589 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5592 return AVERROR(EINVAL);
5594 if (!(s->oformat->flags & AVFMT_NOFILE))
5595 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5599 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5602 s->io_close(s, *pb);
5606 int ff_is_http_proto(char *filename) {
5607 const char *proto = avio_find_protocol_name(filename);
5608 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5611 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5613 AVDictionaryEntry *entry;
5614 int64_t parsed_timestamp;
5616 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5617 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5618 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5621 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5628 int ff_standardize_creation_time(AVFormatContext *s)
5631 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5633 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5637 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5642 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5644 if (size != AVPALETTE_SIZE) {
5645 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5646 return AVERROR_INVALIDDATA;
5648 memcpy(palette, side_data, AVPALETTE_SIZE);
5652 if (ret == CONTAINS_PAL) {
5654 for (i = 0; i < AVPALETTE_COUNT; i++)
5655 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5662 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5667 ret = av_bprint_finalize(buf, &str);
5670 if (!av_bprint_is_complete(buf)) {
5672 return AVERROR(ENOMEM);
5675 par->extradata = str;
5676 /* Note: the string is NUL terminated (so extradata can be read as a
5677 * string), but the ending character is not accounted in the size (in
5678 * binary formats you are likely not supposed to mux that character). When
5679 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5681 par->extradata_size = buf->len;
5685 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5686 AVStream *ost, const AVStream *ist,
5687 enum AVTimebaseSource copy_tb)
5689 //TODO: use [io]st->internal->avctx
5690 const AVCodecContext *dec_ctx = ist->codec;
5691 AVCodecContext *enc_ctx = ost->codec;
5693 enc_ctx->time_base = ist->time_base;
5695 * Avi is a special case here because it supports variable fps but
5696 * having the fps and timebase differe significantly adds quite some
5699 if (!strcmp(ofmt->name, "avi")) {
5700 #if FF_API_R_FRAME_RATE
5701 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5702 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5703 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5704 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5705 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5706 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5707 enc_ctx->time_base.num = ist->r_frame_rate.den;
5708 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5709 enc_ctx->ticks_per_frame = 2;
5712 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5713 && av_q2d(ist->time_base) < 1.0/500
5714 || copy_tb == AVFMT_TBCF_DECODER) {
5715 enc_ctx->time_base = dec_ctx->time_base;
5716 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5717 enc_ctx->time_base.den *= 2;
5718 enc_ctx->ticks_per_frame = 2;
5720 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5721 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5722 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5723 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5724 && av_q2d(ist->time_base) < 1.0/500
5725 || copy_tb == AVFMT_TBCF_DECODER) {
5726 enc_ctx->time_base = dec_ctx->time_base;
5727 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5731 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5732 && dec_ctx->time_base.num < dec_ctx->time_base.den
5733 && dec_ctx->time_base.num > 0
5734 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5735 enc_ctx->time_base = dec_ctx->time_base;
5738 if (ost->avg_frame_rate.num)
5739 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5741 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5742 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5747 AVRational av_stream_get_codec_timebase(const AVStream *st)
5749 // See avformat_transfer_internal_stream_timing_info() TODO.
5750 #if FF_API_LAVF_AVCTX
5751 FF_DISABLE_DEPRECATION_WARNINGS
5752 return st->codec->time_base;
5753 FF_ENABLE_DEPRECATION_WARNINGS
5755 return st->internal->avctx->time_base;
5759 void ff_format_set_url(AVFormatContext *s, char *url)
5764 #if FF_API_FORMAT_FILENAME
5765 FF_DISABLE_DEPRECATION_WARNINGS
5766 av_strlcpy(s->filename, url, sizeof(s->filename));
5767 FF_ENABLE_DEPRECATION_WARNINGS