2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/thread.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
63 * various utility functions for use within FFmpeg
66 unsigned avformat_version(void)
68 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
69 return LIBAVFORMAT_VERSION_INT;
72 const char *avformat_configuration(void)
74 return FFMPEG_CONFIGURATION;
77 const char *avformat_license(void)
79 #define LICENSE_PREFIX "libavformat license: "
80 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
83 int ff_lock_avformat(void)
85 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
88 int ff_unlock_avformat(void)
90 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
93 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
95 static int is_relative(int64_t ts) {
96 return ts > (RELATIVE_TS_BASE - (1LL<<48));
100 * Wrap a given time stamp, if there is an indication for an overflow
103 * @param timestamp the time stamp to wrap
104 * @return resulting time stamp
106 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
108 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
109 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
110 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
111 timestamp < st->pts_wrap_reference)
112 return timestamp + (1ULL << st->pts_wrap_bits);
113 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
114 timestamp >= st->pts_wrap_reference)
115 return timestamp - (1ULL << st->pts_wrap_bits);
120 #if FF_API_FORMAT_GET_SET
121 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
122 #if FF_API_LAVF_FFSERVER
123 FF_DISABLE_DEPRECATION_WARNINGS
124 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
125 FF_ENABLE_DEPRECATION_WARNINGS
127 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
128 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
129 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
130 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
131 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
132 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
133 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
134 #if FF_API_OLD_OPEN_CALLBACKS
135 FF_DISABLE_DEPRECATION_WARNINGS
136 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
137 FF_ENABLE_DEPRECATION_WARNINGS
141 int64_t av_stream_get_end_pts(const AVStream *st)
143 if (st->internal->priv_pts) {
144 return st->internal->priv_pts->val;
146 return AV_NOPTS_VALUE;
149 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
154 void av_format_inject_global_side_data(AVFormatContext *s)
157 s->internal->inject_global_side_data = 1;
158 for (i = 0; i < s->nb_streams; i++) {
159 AVStream *st = s->streams[i];
160 st->inject_global_side_data = 1;
164 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
166 av_assert0(!dst->codec_whitelist &&
167 !dst->format_whitelist &&
168 !dst->protocol_whitelist &&
169 !dst->protocol_blacklist);
170 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
171 dst->format_whitelist = av_strdup(src->format_whitelist);
172 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
173 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
174 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 || (src-> format_whitelist && !dst-> format_whitelist)
176 || (src->protocol_whitelist && !dst->protocol_whitelist)
177 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
178 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
179 return AVERROR(ENOMEM);
184 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
186 #if FF_API_LAVF_AVCTX
187 FF_DISABLE_DEPRECATION_WARNINGS
188 if (st->codec->codec)
189 return st->codec->codec;
190 FF_ENABLE_DEPRECATION_WARNINGS
193 switch (st->codecpar->codec_type) {
194 case AVMEDIA_TYPE_VIDEO:
195 if (s->video_codec) return s->video_codec;
197 case AVMEDIA_TYPE_AUDIO:
198 if (s->audio_codec) return s->audio_codec;
200 case AVMEDIA_TYPE_SUBTITLE:
201 if (s->subtitle_codec) return s->subtitle_codec;
205 return avcodec_find_decoder(codec_id);
208 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
210 const AVCodec *codec;
212 #if CONFIG_H264_DECODER
213 /* Other parts of the code assume this decoder to be used for h264,
214 * so force it if possible. */
215 if (codec_id == AV_CODEC_ID_H264)
216 return avcodec_find_decoder_by_name("h264");
219 codec = find_decoder(s, st, codec_id);
223 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
224 const AVCodec *probe_codec = NULL;
225 while (probe_codec = av_codec_next(probe_codec)) {
226 if (probe_codec->id == codec_id &&
227 av_codec_is_decoder(probe_codec) &&
228 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
237 #if FF_API_FORMAT_GET_SET
238 int av_format_get_probe_score(const AVFormatContext *s)
240 return s->probe_score;
244 /* an arbitrarily chosen "sane" max packet size -- 50M */
245 #define SANE_CHUNK_SIZE (50000000)
247 int ffio_limit(AVIOContext *s, int size)
249 if (s->maxsize>= 0) {
250 int64_t remaining= s->maxsize - avio_tell(s);
251 if (remaining < size) {
252 int64_t newsize = avio_size(s);
253 if (!s->maxsize || s->maxsize<newsize)
254 s->maxsize = newsize - !newsize;
255 remaining= s->maxsize - avio_tell(s);
256 remaining= FFMAX(remaining, 0);
259 if (s->maxsize>= 0 && remaining+1 < size) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
267 /* Read the data in sane-sized chunks and append to pkt.
268 * Return the number of bytes read or an error. */
269 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
271 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
272 int orig_size = pkt->size;
276 int prev_size = pkt->size;
279 /* When the caller requests a lot of data, limit it to the amount
280 * left in file or SANE_CHUNK_SIZE when it is not known. */
282 if (read_size > SANE_CHUNK_SIZE/10) {
283 read_size = ffio_limit(s, read_size);
284 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
286 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
289 ret = av_grow_packet(pkt, read_size);
293 ret = avio_read(s, pkt->data + prev_size, read_size);
294 if (ret != read_size) {
295 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
302 pkt->flags |= AV_PKT_FLAG_CORRUPT;
306 av_packet_unref(pkt);
307 return pkt->size > orig_size ? pkt->size - orig_size : ret;
310 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
315 pkt->pos = avio_tell(s);
317 return append_packet_chunked(s, pkt, size);
320 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 return append_packet_chunked(s, pkt, size);
327 int av_filename_number_test(const char *filename)
331 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
334 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
337 static const struct {
340 enum AVMediaType type;
342 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
343 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
344 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
345 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
346 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
347 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
348 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
349 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
350 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
351 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
352 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
353 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
354 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
355 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
356 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
360 const AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
364 av_log(s, AV_LOG_DEBUG,
365 "Probe with size=%d, packets=%d detected %s with score=%d\n",
366 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
368 for (i = 0; fmt_id_type[i].name; i++) {
369 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
370 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
371 st->codecpar->sample_rate)
373 if (st->request_probe > score &&
374 st->codecpar->codec_id != fmt_id_type[i].id)
376 st->codecpar->codec_id = fmt_id_type[i].id;
377 st->codecpar->codec_type = fmt_id_type[i].type;
378 st->internal->need_context_update = 1;
379 #if FF_API_LAVF_AVCTX
380 FF_DISABLE_DEPRECATION_WARNINGS
381 st->codec->codec_type = st->codecpar->codec_type;
382 st->codec->codec_id = st->codecpar->codec_id;
383 FF_ENABLE_DEPRECATION_WARNINGS
392 /************************************************************/
393 /* input media file */
395 int av_demuxer_open(AVFormatContext *ic) {
398 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
399 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
400 return AVERROR(EINVAL);
403 if (ic->iformat->read_header) {
404 err = ic->iformat->read_header(ic);
409 if (ic->pb && !ic->internal->data_offset)
410 ic->internal->data_offset = avio_tell(ic->pb);
415 /* Open input file and probe the format if necessary. */
416 static int init_input(AVFormatContext *s, const char *filename,
417 AVDictionary **options)
420 AVProbeData pd = { filename, NULL, 0 };
421 int score = AVPROBE_SCORE_RETRY;
424 s->flags |= AVFMT_FLAG_CUSTOM_IO;
426 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
427 s, 0, s->format_probesize);
428 else if (s->iformat->flags & AVFMT_NOFILE)
429 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
430 "will be ignored with AVFMT_NOFILE format.\n");
434 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
435 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
438 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
443 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
444 s, 0, s->format_probesize);
447 int ff_packet_list_put(AVPacketList **packet_buffer,
448 AVPacketList **plast_pktl,
449 AVPacket *pkt, int flags)
451 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
455 return AVERROR(ENOMEM);
457 if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
458 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
463 // 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 ff_const59 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") || !strcmp(s->iformat->name, "wav")) {
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_DEBUG,
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 && (uint64_t)pkt->duration <= INT32_MAX)
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 if ((uint64_t)pkt->duration <= INT32_MAX)
1368 st->last_IP_duration = pkt->duration;
1369 st->last_IP_pts = pkt->pts;
1370 /* Cannot compute PTS if not present (we can compute it only
1371 * by knowing the future. */
1372 } else if (pkt->pts != AV_NOPTS_VALUE ||
1373 pkt->dts != AV_NOPTS_VALUE ||
1376 /* presentation is not delayed : PTS and DTS are the same */
1377 if (pkt->pts == AV_NOPTS_VALUE)
1378 pkt->pts = pkt->dts;
1379 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1381 if (pkt->pts == AV_NOPTS_VALUE)
1382 pkt->pts = st->cur_dts;
1383 pkt->dts = pkt->pts;
1384 if (pkt->pts != AV_NOPTS_VALUE)
1385 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1389 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1390 st->pts_buffer[0] = pkt->pts;
1391 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1392 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1394 if(has_decode_delay_been_guessed(st))
1395 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1397 // We skipped it above so we try here.
1399 // This should happen on the first packet
1400 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1401 if (pkt->dts > st->cur_dts)
1402 st->cur_dts = pkt->dts;
1404 if (s->debug & FF_FDEBUG_TS)
1405 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1406 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1409 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1410 pkt->flags |= AV_PKT_FLAG_KEY;
1411 #if FF_API_CONVERGENCE_DURATION
1412 FF_DISABLE_DEPRECATION_WARNINGS
1414 pkt->convergence_duration = pc->convergence_duration;
1415 FF_ENABLE_DEPRECATION_WARNINGS
1419 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1421 AVPacketList *tmp = *pkt_buf;
1424 AVPacketList *pktl = tmp;
1426 av_packet_unref(&pktl->pkt);
1430 *pkt_buf_end = NULL;
1434 * Parse a packet, add all split parts to parse_queue.
1436 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1438 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1440 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1441 AVStream *st = s->streams[stream_index];
1442 uint8_t *data = pkt ? pkt->data : NULL;
1443 int size = pkt ? pkt->size : 0;
1444 int ret = 0, got_output = 0;
1447 av_init_packet(&flush_pkt);
1450 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1451 // preserve 0-size sync packets
1452 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1455 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1457 int64_t next_pts = pkt->pts;
1458 int64_t next_dts = pkt->dts;
1460 av_init_packet(&out_pkt);
1461 len = av_parser_parse2(st->parser, st->internal->avctx,
1462 &out_pkt.data, &out_pkt.size, data, size,
1463 pkt->pts, pkt->dts, pkt->pos);
1465 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1467 /* increment read pointer */
1471 got_output = !!out_pkt.size;
1476 if (pkt->buf && out_pkt.data == pkt->data) {
1477 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1478 * to data in it and not in the parser's internal buffer. */
1479 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1480 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1481 out_pkt.buf = av_buffer_ref(pkt->buf);
1483 ret = AVERROR(ENOMEM);
1487 ret = av_packet_make_refcounted(&out_pkt);
1492 if (pkt->side_data) {
1493 out_pkt.side_data = pkt->side_data;
1494 out_pkt.side_data_elems = pkt->side_data_elems;
1495 pkt->side_data = NULL;
1496 pkt->side_data_elems = 0;
1499 /* set the duration */
1500 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1501 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1502 if (st->internal->avctx->sample_rate > 0) {
1504 av_rescale_q_rnd(st->parser->duration,
1505 (AVRational) { 1, st->internal->avctx->sample_rate },
1511 out_pkt.stream_index = st->index;
1512 out_pkt.pts = st->parser->pts;
1513 out_pkt.dts = st->parser->dts;
1514 out_pkt.pos = st->parser->pos;
1515 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1517 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1518 out_pkt.pos = st->parser->frame_offset;
1520 if (st->parser->key_frame == 1 ||
1521 (st->parser->key_frame == -1 &&
1522 st->parser->pict_type == AV_PICTURE_TYPE_I))
1523 out_pkt.flags |= AV_PKT_FLAG_KEY;
1525 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1526 out_pkt.flags |= AV_PKT_FLAG_KEY;
1528 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1530 ret = ff_packet_list_put(&s->internal->parse_queue,
1531 &s->internal->parse_queue_end,
1534 av_packet_unref(&out_pkt);
1539 /* end of the stream => close and free the parser */
1540 if (pkt == &flush_pkt) {
1541 av_parser_close(st->parser);
1546 av_packet_unref(pkt);
1550 int ff_packet_list_get(AVPacketList **pkt_buffer,
1551 AVPacketList **pkt_buffer_end,
1555 av_assert0(*pkt_buffer);
1558 *pkt_buffer = pktl->next;
1560 *pkt_buffer_end = NULL;
1565 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1567 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1570 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1572 int ret = 0, i, got_packet = 0;
1573 AVDictionary *metadata = NULL;
1575 av_init_packet(pkt);
1577 while (!got_packet && !s->internal->parse_queue) {
1581 /* read next packet */
1582 ret = ff_read_packet(s, &cur_pkt);
1584 if (ret == AVERROR(EAGAIN))
1586 /* flush the parsers */
1587 for (i = 0; i < s->nb_streams; i++) {
1589 if (st->parser && st->need_parsing)
1590 parse_packet(s, NULL, st->index);
1592 /* all remaining packets are now in parse_queue =>
1593 * really terminate parsing */
1597 st = s->streams[cur_pkt.stream_index];
1599 /* update context if required */
1600 if (st->internal->need_context_update) {
1601 if (avcodec_is_open(st->internal->avctx)) {
1602 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1603 avcodec_close(st->internal->avctx);
1604 st->info->found_decoder = 0;
1607 /* close parser, because it depends on the codec */
1608 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1609 av_parser_close(st->parser);
1613 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1617 #if FF_API_LAVF_AVCTX
1618 FF_DISABLE_DEPRECATION_WARNINGS
1619 /* update deprecated public codec context */
1620 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1623 FF_ENABLE_DEPRECATION_WARNINGS
1626 st->internal->need_context_update = 0;
1629 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1630 cur_pkt.dts != AV_NOPTS_VALUE &&
1631 cur_pkt.pts < cur_pkt.dts) {
1632 av_log(s, AV_LOG_WARNING,
1633 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1634 cur_pkt.stream_index,
1635 av_ts2str(cur_pkt.pts),
1636 av_ts2str(cur_pkt.dts),
1639 if (s->debug & FF_FDEBUG_TS)
1640 av_log(s, AV_LOG_DEBUG,
1641 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1642 cur_pkt.stream_index,
1643 av_ts2str(cur_pkt.pts),
1644 av_ts2str(cur_pkt.dts),
1645 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1647 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1648 st->parser = av_parser_init(st->codecpar->codec_id);
1650 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1651 "%s, packets or times may be invalid.\n",
1652 avcodec_get_name(st->codecpar->codec_id));
1653 /* no parser available: just output the raw packets */
1654 st->need_parsing = AVSTREAM_PARSE_NONE;
1655 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1656 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1657 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1658 st->parser->flags |= PARSER_FLAG_ONCE;
1659 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1660 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1663 if (!st->need_parsing || !st->parser) {
1664 /* no parsing needed: we just output the packet as is */
1666 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1667 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1668 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1669 ff_reduce_index(s, st->index);
1670 av_add_index_entry(st, pkt->pos, pkt->dts,
1671 0, 0, AVINDEX_KEYFRAME);
1674 } else if (st->discard < AVDISCARD_ALL) {
1675 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1677 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1678 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1679 st->codecpar->channels = st->internal->avctx->channels;
1680 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1681 st->codecpar->codec_id = st->internal->avctx->codec_id;
1684 av_packet_unref(&cur_pkt);
1686 if (pkt->flags & AV_PKT_FLAG_KEY)
1687 st->skip_to_keyframe = 0;
1688 if (st->skip_to_keyframe) {
1689 av_packet_unref(&cur_pkt);
1697 if (!got_packet && s->internal->parse_queue)
1698 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1701 AVStream *st = s->streams[pkt->stream_index];
1702 int discard_padding = 0;
1703 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1704 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1705 int64_t sample = ts_to_samples(st, pts);
1706 int duration = ts_to_samples(st, pkt->duration);
1707 int64_t end_sample = sample + duration;
1708 if (duration > 0 && end_sample >= st->first_discard_sample &&
1709 sample < st->last_discard_sample)
1710 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1712 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1713 st->skip_samples = st->start_skip_samples;
1714 if (st->skip_samples || discard_padding) {
1715 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1717 AV_WL32(p, st->skip_samples);
1718 AV_WL32(p + 4, discard_padding);
1719 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1721 st->skip_samples = 0;
1724 if (st->inject_global_side_data) {
1725 for (i = 0; i < st->nb_side_data; i++) {
1726 AVPacketSideData *src_sd = &st->side_data[i];
1729 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1732 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1734 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1738 memcpy(dst_data, src_sd->data, src_sd->size);
1740 st->inject_global_side_data = 0;
1744 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1746 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1747 av_dict_copy(&s->metadata, metadata, 0);
1748 av_dict_free(&metadata);
1749 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1752 #if FF_API_LAVF_AVCTX
1753 update_stream_avctx(s);
1756 if (s->debug & FF_FDEBUG_TS)
1757 av_log(s, AV_LOG_DEBUG,
1758 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1759 "size=%d, duration=%"PRId64", flags=%d\n",
1761 av_ts2str(pkt->pts),
1762 av_ts2str(pkt->dts),
1763 pkt->size, pkt->duration, pkt->flags);
1768 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1770 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1776 ret = s->internal->packet_buffer
1777 ? ff_packet_list_get(&s->internal->packet_buffer,
1778 &s->internal->packet_buffer_end, pkt)
1779 : read_frame_internal(s, pkt);
1786 AVPacketList *pktl = s->internal->packet_buffer;
1789 AVPacket *next_pkt = &pktl->pkt;
1791 if (next_pkt->dts != AV_NOPTS_VALUE) {
1792 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1793 // last dts seen for this stream. if any of packets following
1794 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1795 int64_t last_dts = next_pkt->dts;
1796 av_assert2(wrap_bits <= 64);
1797 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1798 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1799 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1800 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1802 next_pkt->pts = pktl->pkt.dts;
1804 if (last_dts != AV_NOPTS_VALUE) {
1805 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1806 last_dts = pktl->pkt.dts;
1811 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1812 // Fixing the last reference frame had none pts issue (For MXF etc).
1813 // We only do this when
1815 // 2. we are not able to resolve a pts value for current packet.
1816 // 3. the packets for this stream at the end of the files had valid dts.
1817 next_pkt->pts = last_dts + next_pkt->duration;
1819 pktl = s->internal->packet_buffer;
1822 /* read packet from packet buffer, if there is data */
1823 st = s->streams[next_pkt->stream_index];
1824 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1825 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1826 ret = ff_packet_list_get(&s->internal->packet_buffer,
1827 &s->internal->packet_buffer_end, pkt);
1832 ret = read_frame_internal(s, pkt);
1834 if (pktl && ret != AVERROR(EAGAIN)) {
1841 ret = ff_packet_list_put(&s->internal->packet_buffer,
1842 &s->internal->packet_buffer_end,
1843 pkt, FF_PACKETLIST_FLAG_REF_PACKET);
1844 av_packet_unref(pkt);
1851 st = s->streams[pkt->stream_index];
1852 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1853 ff_reduce_index(s, st->index);
1854 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1857 if (is_relative(pkt->dts))
1858 pkt->dts -= RELATIVE_TS_BASE;
1859 if (is_relative(pkt->pts))
1860 pkt->pts -= RELATIVE_TS_BASE;
1865 /* XXX: suppress the packet queue */
1866 static void flush_packet_queue(AVFormatContext *s)
1870 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1871 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1872 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1874 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1877 /*******************************************************/
1880 int av_find_default_stream_index(AVFormatContext *s)
1884 int best_stream = 0;
1885 int best_score = INT_MIN;
1887 if (s->nb_streams <= 0)
1889 for (i = 0; i < s->nb_streams; i++) {
1892 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1893 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1895 if (st->codecpar->width && st->codecpar->height)
1899 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1900 if (st->codecpar->sample_rate)
1903 if (st->codec_info_nb_frames)
1906 if (st->discard != AVDISCARD_ALL)
1909 if (score > best_score) {
1917 /** Flush the frame reader. */
1918 void ff_read_frame_flush(AVFormatContext *s)
1923 flush_packet_queue(s);
1925 /* Reset read state for each stream. */
1926 for (i = 0; i < s->nb_streams; i++) {
1930 av_parser_close(st->parser);
1933 st->last_IP_pts = AV_NOPTS_VALUE;
1934 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1935 if (st->first_dts == AV_NOPTS_VALUE)
1936 st->cur_dts = RELATIVE_TS_BASE;
1938 /* We set the current DTS to an unspecified origin. */
1939 st->cur_dts = AV_NOPTS_VALUE;
1941 st->probe_packets = MAX_PROBE_PACKETS;
1943 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1944 st->pts_buffer[j] = AV_NOPTS_VALUE;
1946 if (s->internal->inject_global_side_data)
1947 st->inject_global_side_data = 1;
1949 st->skip_samples = 0;
1953 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1957 for (i = 0; i < s->nb_streams; i++) {
1958 AVStream *st = s->streams[i];
1961 av_rescale(timestamp,
1962 st->time_base.den * (int64_t) ref_st->time_base.num,
1963 st->time_base.num * (int64_t) ref_st->time_base.den);
1967 void ff_reduce_index(AVFormatContext *s, int stream_index)
1969 AVStream *st = s->streams[stream_index];
1970 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1972 if ((unsigned) st->nb_index_entries >= max_entries) {
1974 for (i = 0; 2 * i < st->nb_index_entries; i++)
1975 st->index_entries[i] = st->index_entries[2 * i];
1976 st->nb_index_entries = i;
1980 int ff_add_index_entry(AVIndexEntry **index_entries,
1981 int *nb_index_entries,
1982 unsigned int *index_entries_allocated_size,
1983 int64_t pos, int64_t timestamp,
1984 int size, int distance, int flags)
1986 AVIndexEntry *entries, *ie;
1989 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1992 if (timestamp == AV_NOPTS_VALUE)
1993 return AVERROR(EINVAL);
1995 if (size < 0 || size > 0x3FFFFFFF)
1996 return AVERROR(EINVAL);
1998 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1999 timestamp -= RELATIVE_TS_BASE;
2001 entries = av_fast_realloc(*index_entries,
2002 index_entries_allocated_size,
2003 (*nb_index_entries + 1) *
2004 sizeof(AVIndexEntry));
2008 *index_entries = entries;
2010 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2011 timestamp, AVSEEK_FLAG_ANY);
2014 index = (*nb_index_entries)++;
2015 ie = &entries[index];
2016 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2018 ie = &entries[index];
2019 if (ie->timestamp != timestamp) {
2020 if (ie->timestamp <= timestamp)
2022 memmove(entries + index + 1, entries + index,
2023 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2024 (*nb_index_entries)++;
2025 } else if (ie->pos == pos && distance < ie->min_distance)
2026 // do not reduce the distance
2027 distance = ie->min_distance;
2031 ie->timestamp = timestamp;
2032 ie->min_distance = distance;
2039 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2040 int size, int distance, int flags)
2042 timestamp = wrap_timestamp(st, timestamp);
2043 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2044 &st->index_entries_allocated_size, pos,
2045 timestamp, size, distance, flags);
2048 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2049 int64_t wanted_timestamp, int flags)
2057 // Optimize appending index entries at the end.
2058 if (b && entries[b - 1].timestamp < wanted_timestamp)
2064 // Search for the next non-discarded packet.
2065 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2067 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2073 timestamp = entries[m].timestamp;
2074 if (timestamp >= wanted_timestamp)
2076 if (timestamp <= wanted_timestamp)
2079 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2081 if (!(flags & AVSEEK_FLAG_ANY))
2082 while (m >= 0 && m < nb_entries &&
2083 !(entries[m].flags & AVINDEX_KEYFRAME))
2084 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2086 if (m == nb_entries)
2091 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2094 int64_t pos_delta = 0;
2096 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2097 const char *proto = avio_find_protocol_name(s->url);
2100 av_log(s, AV_LOG_INFO,
2101 "Protocol name not provided, cannot determine if input is local or "
2102 "a network protocol, buffers and access patterns cannot be configured "
2103 "optimally without knowing the protocol\n");
2106 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2109 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2110 AVStream *st1 = s->streams[ist1];
2111 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2112 AVStream *st2 = s->streams[ist2];
2118 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2119 AVIndexEntry *e1 = &st1->index_entries[i1];
2120 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2122 skip = FFMAX(skip, e1->size);
2123 for (; i2 < st2->nb_index_entries; i2++) {
2124 AVIndexEntry *e2 = &st2->index_entries[i2];
2125 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2126 if (e2_pts - e1_pts < time_tolerance)
2128 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2136 /* XXX This could be adjusted depending on protocol*/
2137 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2138 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2139 ffio_set_buf_size(s->pb, pos_delta);
2140 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2143 if (skip < (1<<23)) {
2144 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2148 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2150 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2151 wanted_timestamp, flags);
2154 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2155 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2157 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2158 if (stream_index >= 0)
2159 ts = wrap_timestamp(s->streams[stream_index], ts);
2163 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2164 int64_t target_ts, int flags)
2166 const AVInputFormat *avif = s->iformat;
2167 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2168 int64_t ts_min, ts_max, ts;
2173 if (stream_index < 0)
2176 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2179 ts_min = AV_NOPTS_VALUE;
2180 pos_limit = -1; // GCC falsely says it may be uninitialized.
2182 st = s->streams[stream_index];
2183 if (st->index_entries) {
2186 /* FIXME: Whole function must be checked for non-keyframe entries in
2187 * index case, especially read_timestamp(). */
2188 index = av_index_search_timestamp(st, target_ts,
2189 flags | AVSEEK_FLAG_BACKWARD);
2190 index = FFMAX(index, 0);
2191 e = &st->index_entries[index];
2193 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2195 ts_min = e->timestamp;
2196 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2197 pos_min, av_ts2str(ts_min));
2199 av_assert1(index == 0);
2202 index = av_index_search_timestamp(st, target_ts,
2203 flags & ~AVSEEK_FLAG_BACKWARD);
2204 av_assert0(index < st->nb_index_entries);
2206 e = &st->index_entries[index];
2207 av_assert1(e->timestamp >= target_ts);
2209 ts_max = e->timestamp;
2210 pos_limit = pos_max - e->min_distance;
2211 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2212 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2216 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2217 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2222 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2225 ff_read_frame_flush(s);
2226 ff_update_cur_dts(s, st, ts);
2231 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2232 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2234 int64_t step = 1024;
2235 int64_t limit, ts_max;
2236 int64_t filesize = avio_size(s->pb);
2237 int64_t pos_max = filesize - 1;
2240 pos_max = FFMAX(0, (pos_max) - step);
2241 ts_max = ff_read_timestamp(s, stream_index,
2242 &pos_max, limit, read_timestamp);
2244 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2245 if (ts_max == AV_NOPTS_VALUE)
2249 int64_t tmp_pos = pos_max + 1;
2250 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2251 &tmp_pos, INT64_MAX, read_timestamp);
2252 if (tmp_ts == AV_NOPTS_VALUE)
2254 av_assert0(tmp_pos > pos_max);
2257 if (tmp_pos >= filesize)
2269 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2270 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2271 int64_t ts_min, int64_t ts_max,
2272 int flags, int64_t *ts_ret,
2273 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2274 int64_t *, int64_t))
2281 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2283 if (ts_min == AV_NOPTS_VALUE) {
2284 pos_min = s->internal->data_offset;
2285 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2286 if (ts_min == AV_NOPTS_VALUE)
2290 if (ts_min >= target_ts) {
2295 if (ts_max == AV_NOPTS_VALUE) {
2296 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2298 pos_limit = pos_max;
2301 if (ts_max <= target_ts) {
2306 av_assert0(ts_min < ts_max);
2309 while (pos_min < pos_limit) {
2310 av_log(s, AV_LOG_TRACE,
2311 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2312 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2313 av_assert0(pos_limit <= pos_max);
2315 if (no_change == 0) {
2316 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2317 // interpolate position (better than dichotomy)
2318 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2320 pos_min - approximate_keyframe_distance;
2321 } else if (no_change == 1) {
2322 // bisection if interpolation did not change min / max pos last time
2323 pos = (pos_min + pos_limit) >> 1;
2325 /* linear search if bisection failed, can only happen if there
2326 * are very few or no keyframes between min/max */
2331 else if (pos > pos_limit)
2335 // May pass pos_limit instead of -1.
2336 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2341 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2342 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2343 pos_min, pos, pos_max,
2344 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2345 pos_limit, start_pos, no_change);
2346 if (ts == AV_NOPTS_VALUE) {
2347 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2350 if (target_ts <= ts) {
2351 pos_limit = start_pos - 1;
2355 if (target_ts >= ts) {
2361 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2362 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2365 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2367 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2368 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2369 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2375 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2376 int64_t pos, int flags)
2378 int64_t pos_min, pos_max;
2380 pos_min = s->internal->data_offset;
2381 pos_max = avio_size(s->pb) - 1;
2385 else if (pos > pos_max)
2388 avio_seek(s->pb, pos, SEEK_SET);
2390 s->io_repositioned = 1;
2395 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2396 int64_t timestamp, int flags)
2403 st = s->streams[stream_index];
2405 index = av_index_search_timestamp(st, timestamp, flags);
2407 if (index < 0 && st->nb_index_entries &&
2408 timestamp < st->index_entries[0].timestamp)
2411 if (index < 0 || index == st->nb_index_entries - 1) {
2415 if (st->nb_index_entries) {
2416 av_assert0(st->index_entries);
2417 ie = &st->index_entries[st->nb_index_entries - 1];
2418 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2420 ff_update_cur_dts(s, st, ie->timestamp);
2422 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2428 read_status = av_read_frame(s, &pkt);
2429 } while (read_status == AVERROR(EAGAIN));
2430 if (read_status < 0)
2432 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2433 if (pkt.flags & AV_PKT_FLAG_KEY) {
2434 av_packet_unref(&pkt);
2437 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2438 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);
2439 av_packet_unref(&pkt);
2443 av_packet_unref(&pkt);
2445 index = av_index_search_timestamp(st, timestamp, flags);
2450 ff_read_frame_flush(s);
2451 if (s->iformat->read_seek)
2452 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2454 ie = &st->index_entries[index];
2455 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2457 ff_update_cur_dts(s, st, ie->timestamp);
2462 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2463 int64_t timestamp, int flags)
2468 if (flags & AVSEEK_FLAG_BYTE) {
2469 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2471 ff_read_frame_flush(s);
2472 return seek_frame_byte(s, stream_index, timestamp, flags);
2475 if (stream_index < 0) {
2476 stream_index = av_find_default_stream_index(s);
2477 if (stream_index < 0)
2480 st = s->streams[stream_index];
2481 /* timestamp for default must be expressed in AV_TIME_BASE units */
2482 timestamp = av_rescale(timestamp, st->time_base.den,
2483 AV_TIME_BASE * (int64_t) st->time_base.num);
2486 /* first, we try the format specific seek */
2487 if (s->iformat->read_seek) {
2488 ff_read_frame_flush(s);
2489 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2495 if (s->iformat->read_timestamp &&
2496 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2497 ff_read_frame_flush(s);
2498 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2499 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2500 ff_read_frame_flush(s);
2501 return seek_frame_generic(s, stream_index, timestamp, flags);
2506 int av_seek_frame(AVFormatContext *s, int stream_index,
2507 int64_t timestamp, int flags)
2511 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2512 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2513 if ((flags & AVSEEK_FLAG_BACKWARD))
2517 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2518 flags & ~AVSEEK_FLAG_BACKWARD);
2521 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2524 ret = avformat_queue_attached_pictures(s);
2529 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2530 int64_t ts, int64_t max_ts, int flags)
2532 if (min_ts > ts || max_ts < ts)
2534 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2535 return AVERROR(EINVAL);
2538 flags |= AVSEEK_FLAG_ANY;
2539 flags &= ~AVSEEK_FLAG_BACKWARD;
2541 if (s->iformat->read_seek2) {
2543 ff_read_frame_flush(s);
2545 if (stream_index == -1 && s->nb_streams == 1) {
2546 AVRational time_base = s->streams[0]->time_base;
2547 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2548 min_ts = av_rescale_rnd(min_ts, time_base.den,
2549 time_base.num * (int64_t)AV_TIME_BASE,
2550 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2551 max_ts = av_rescale_rnd(max_ts, time_base.den,
2552 time_base.num * (int64_t)AV_TIME_BASE,
2553 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2557 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2561 ret = avformat_queue_attached_pictures(s);
2565 if (s->iformat->read_timestamp) {
2566 // try to seek via read_timestamp()
2569 // Fall back on old API if new is not implemented but old is.
2570 // Note the old API has somewhat different semantics.
2571 if (s->iformat->read_seek || 1) {
2572 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2573 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2574 if (ret<0 && ts != min_ts && max_ts != ts) {
2575 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2577 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2582 // try some generic seek like seek_frame_generic() but with new ts semantics
2583 return -1; //unreachable
2586 int avformat_flush(AVFormatContext *s)
2588 ff_read_frame_flush(s);
2592 /*******************************************************/
2595 * Return TRUE if the stream has accurate duration in any stream.
2597 * @return TRUE if the stream has accurate duration for at least one component.
2599 static int has_duration(AVFormatContext *ic)
2604 for (i = 0; i < ic->nb_streams; i++) {
2605 st = ic->streams[i];
2606 if (st->duration != AV_NOPTS_VALUE)
2609 if (ic->duration != AV_NOPTS_VALUE)
2615 * Estimate the stream timings from the one of each components.
2617 * Also computes the global bitrate if possible.
2619 static void update_stream_timings(AVFormatContext *ic)
2621 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2622 int64_t duration, duration1, duration_text, 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 duration_text = INT64_MIN;
2633 for (i = 0; i < ic->nb_streams; i++) {
2634 AVStream *st = ic->streams[i];
2635 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2636 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2637 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2638 start_time1 = av_rescale_q(st->start_time, st->time_base,
2641 start_time_text = FFMIN(start_time_text, start_time1);
2643 start_time = FFMIN(start_time, start_time1);
2644 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2646 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2647 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2648 end_time1 += start_time1;
2650 end_time_text = FFMAX(end_time_text, end_time1);
2652 end_time = FFMAX(end_time, end_time1);
2654 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2655 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2656 p->start_time = start_time1;
2657 if (p->end_time < end_time1)
2658 p->end_time = end_time1;
2661 if (st->duration != AV_NOPTS_VALUE) {
2662 duration1 = av_rescale_q(st->duration, st->time_base,
2665 duration_text = FFMAX(duration_text, duration1);
2667 duration = FFMAX(duration, duration1);
2670 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2671 start_time = start_time_text;
2672 else if (start_time > start_time_text)
2673 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2675 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2676 end_time = end_time_text;
2677 else if (end_time < end_time_text)
2678 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2680 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2681 duration = duration_text;
2682 else if (duration < duration_text)
2683 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2685 if (start_time != INT64_MAX) {
2686 ic->start_time = start_time;
2687 if (end_time != INT64_MIN) {
2688 if (ic->nb_programs > 1) {
2689 for (i = 0; i < ic->nb_programs; i++) {
2690 p = ic->programs[i];
2691 if (p->start_time != AV_NOPTS_VALUE &&
2692 p->end_time > p->start_time &&
2693 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2694 duration = FFMAX(duration, p->end_time - p->start_time);
2696 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2697 duration = FFMAX(duration, end_time - start_time);
2701 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2702 ic->duration = duration;
2704 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2705 /* compute the bitrate */
2706 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2707 (double) ic->duration;
2708 if (bitrate >= 0 && bitrate <= INT64_MAX)
2709 ic->bit_rate = bitrate;
2713 static void fill_all_stream_timings(AVFormatContext *ic)
2718 update_stream_timings(ic);
2719 for (i = 0; i < ic->nb_streams; i++) {
2720 st = ic->streams[i];
2721 if (st->start_time == AV_NOPTS_VALUE) {
2722 if (ic->start_time != AV_NOPTS_VALUE)
2723 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2725 if (ic->duration != AV_NOPTS_VALUE)
2726 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2732 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2734 int64_t filesize, duration;
2735 int i, show_warning = 0;
2738 /* if bit_rate is already set, we believe it */
2739 if (ic->bit_rate <= 0) {
2740 int64_t bit_rate = 0;
2741 for (i = 0; i < ic->nb_streams; i++) {
2742 st = ic->streams[i];
2743 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2744 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2745 if (st->codecpar->bit_rate > 0) {
2746 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2750 bit_rate += st->codecpar->bit_rate;
2751 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2752 // If we have a videostream with packets but without a bitrate
2753 // then consider the sum not known
2758 ic->bit_rate = bit_rate;
2761 /* if duration is already set, we believe it */
2762 if (ic->duration == AV_NOPTS_VALUE &&
2763 ic->bit_rate != 0) {
2764 filesize = ic->pb ? avio_size(ic->pb) : 0;
2765 if (filesize > ic->internal->data_offset) {
2766 filesize -= ic->internal->data_offset;
2767 for (i = 0; i < ic->nb_streams; i++) {
2768 st = ic->streams[i];
2769 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2770 && st->duration == AV_NOPTS_VALUE) {
2771 duration = av_rescale(8 * filesize, st->time_base.den,
2773 (int64_t) st->time_base.num);
2774 st->duration = duration;
2781 av_log(ic, AV_LOG_WARNING,
2782 "Estimating duration from bitrate, this may be inaccurate\n");
2785 #define DURATION_MAX_READ_SIZE 250000LL
2786 #define DURATION_MAX_RETRY 6
2788 /* only usable for MPEG-PS streams */
2789 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2791 AVPacket pkt1, *pkt = &pkt1;
2793 int num, den, read_size, i, ret;
2794 int found_duration = 0;
2796 int64_t filesize, offset, duration;
2799 /* flush packet queue */
2800 flush_packet_queue(ic);
2802 for (i = 0; i < ic->nb_streams; i++) {
2803 st = ic->streams[i];
2804 if (st->start_time == AV_NOPTS_VALUE &&
2805 st->first_dts == AV_NOPTS_VALUE &&
2806 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2807 av_log(ic, AV_LOG_WARNING,
2808 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2811 av_parser_close(st->parser);
2816 if (ic->skip_estimate_duration_from_pts) {
2817 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2818 goto skip_duration_calc;
2821 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2822 /* estimate the end time (duration) */
2823 /* XXX: may need to support wrapping */
2824 filesize = ic->pb ? avio_size(ic->pb) : 0;
2826 is_end = found_duration;
2827 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2831 avio_seek(ic->pb, offset, SEEK_SET);
2834 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2838 ret = ff_read_packet(ic, pkt);
2839 } while (ret == AVERROR(EAGAIN));
2842 read_size += pkt->size;
2843 st = ic->streams[pkt->stream_index];
2844 if (pkt->pts != AV_NOPTS_VALUE &&
2845 (st->start_time != AV_NOPTS_VALUE ||
2846 st->first_dts != AV_NOPTS_VALUE)) {
2847 if (pkt->duration == 0) {
2848 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2850 pkt->duration = av_rescale_rnd(1,
2851 num * (int64_t) st->time_base.den,
2852 den * (int64_t) st->time_base.num,
2856 duration = pkt->pts + pkt->duration;
2858 if (st->start_time != AV_NOPTS_VALUE)
2859 duration -= st->start_time;
2861 duration -= st->first_dts;
2863 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2864 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2865 st->duration = duration;
2866 st->info->last_duration = duration;
2869 av_packet_unref(pkt);
2872 /* check if all audio/video streams have valid duration */
2875 for (i = 0; i < ic->nb_streams; i++) {
2876 st = ic->streams[i];
2877 switch (st->codecpar->codec_type) {
2878 case AVMEDIA_TYPE_VIDEO:
2879 case AVMEDIA_TYPE_AUDIO:
2880 if (st->duration == AV_NOPTS_VALUE)
2887 ++retry <= DURATION_MAX_RETRY);
2889 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2891 /* warn about audio/video streams which duration could not be estimated */
2892 for (i = 0; i < ic->nb_streams; i++) {
2893 st = ic->streams[i];
2894 if (st->duration == AV_NOPTS_VALUE) {
2895 switch (st->codecpar->codec_type) {
2896 case AVMEDIA_TYPE_VIDEO:
2897 case AVMEDIA_TYPE_AUDIO:
2898 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2899 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2901 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2906 fill_all_stream_timings(ic);
2908 avio_seek(ic->pb, old_offset, SEEK_SET);
2909 for (i = 0; i < ic->nb_streams; i++) {
2912 st = ic->streams[i];
2913 st->cur_dts = st->first_dts;
2914 st->last_IP_pts = AV_NOPTS_VALUE;
2915 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2916 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2917 st->pts_buffer[j] = AV_NOPTS_VALUE;
2921 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2925 /* get the file size, if possible */
2926 if (ic->iformat->flags & AVFMT_NOFILE) {
2929 file_size = avio_size(ic->pb);
2930 file_size = FFMAX(0, file_size);
2933 if ((!strcmp(ic->iformat->name, "mpeg") ||
2934 !strcmp(ic->iformat->name, "mpegts")) &&
2935 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2936 /* get accurate estimate from the PTSes */
2937 estimate_timings_from_pts(ic, old_offset);
2938 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2939 } else if (has_duration(ic)) {
2940 /* at least one component has timings - we use them for all
2942 fill_all_stream_timings(ic);
2943 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2945 /* less precise: use bitrate info */
2946 estimate_timings_from_bit_rate(ic);
2947 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2949 update_stream_timings(ic);
2953 AVStream av_unused *st;
2954 for (i = 0; i < ic->nb_streams; i++) {
2955 st = ic->streams[i];
2956 if (st->time_base.den)
2957 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2958 (double) st->start_time * av_q2d(st->time_base),
2959 (double) st->duration * av_q2d(st->time_base));
2961 av_log(ic, AV_LOG_TRACE,
2962 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2963 (double) ic->start_time / AV_TIME_BASE,
2964 (double) ic->duration / AV_TIME_BASE,
2965 (int64_t)ic->bit_rate / 1000);
2969 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2971 AVCodecContext *avctx = st->internal->avctx;
2973 #define FAIL(errmsg) do { \
2975 *errmsg_ptr = errmsg; \
2979 if ( avctx->codec_id == AV_CODEC_ID_NONE
2980 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2981 FAIL("unknown codec");
2982 switch (avctx->codec_type) {
2983 case AVMEDIA_TYPE_AUDIO:
2984 if (!avctx->frame_size && determinable_frame_size(avctx))
2985 FAIL("unspecified frame size");
2986 if (st->info->found_decoder >= 0 &&
2987 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2988 FAIL("unspecified sample format");
2989 if (!avctx->sample_rate)
2990 FAIL("unspecified sample rate");
2991 if (!avctx->channels)
2992 FAIL("unspecified number of channels");
2993 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2994 FAIL("no decodable DTS frames");
2996 case AVMEDIA_TYPE_VIDEO:
2998 FAIL("unspecified size");
2999 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3000 FAIL("unspecified pixel format");
3001 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3002 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3003 FAIL("no frame in rv30/40 and no sar");
3005 case AVMEDIA_TYPE_SUBTITLE:
3006 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3007 FAIL("unspecified size");
3009 case AVMEDIA_TYPE_DATA:
3010 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3016 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3017 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
3018 AVDictionary **options)
3020 AVCodecContext *avctx = st->internal->avctx;
3021 const AVCodec *codec;
3022 int got_picture = 1, ret = 0;
3023 AVFrame *frame = av_frame_alloc();
3024 AVSubtitle subtitle;
3025 AVPacket pkt = *avpkt;
3026 int do_skip_frame = 0;
3027 enum AVDiscard skip_frame;
3030 return AVERROR(ENOMEM);
3032 if (!avcodec_is_open(avctx) &&
3033 st->info->found_decoder <= 0 &&
3034 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3035 AVDictionary *thread_opt = NULL;
3037 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3040 st->info->found_decoder = -st->codecpar->codec_id;
3045 /* Force thread count to 1 since the H.264 decoder will not extract
3046 * SPS and PPS to extradata during multi-threaded decoding. */
3047 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3048 if (s->codec_whitelist)
3049 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3050 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3052 av_dict_free(&thread_opt);
3054 st->info->found_decoder = -avctx->codec_id;
3057 st->info->found_decoder = 1;
3058 } else if (!st->info->found_decoder)
3059 st->info->found_decoder = 1;
3061 if (st->info->found_decoder < 0) {
3066 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3068 skip_frame = avctx->skip_frame;
3069 avctx->skip_frame = AVDISCARD_ALL;
3072 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3074 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3075 (!st->codec_info_nb_frames &&
3076 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3078 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3079 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3080 ret = avcodec_send_packet(avctx, &pkt);
3081 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3085 ret = avcodec_receive_frame(avctx, frame);
3088 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3090 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3091 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3092 &got_picture, &pkt);
3098 st->nb_decoded_frames++;
3103 if (!pkt.data && !got_picture)
3107 if (do_skip_frame) {
3108 avctx->skip_frame = skip_frame;
3111 av_frame_free(&frame);
3115 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3117 while (tags->id != AV_CODEC_ID_NONE) {
3125 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3128 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3129 if (tag == tags[i].tag)
3131 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3132 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3134 return AV_CODEC_ID_NONE;
3137 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3139 if (bps <= 0 || bps > 64)
3140 return AV_CODEC_ID_NONE;
3145 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3147 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3149 return AV_CODEC_ID_NONE;
3154 if (sflags & (1 << (bps - 1))) {
3157 return AV_CODEC_ID_PCM_S8;
3159 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3161 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3163 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3165 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3167 return AV_CODEC_ID_NONE;
3172 return AV_CODEC_ID_PCM_U8;
3174 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3176 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3178 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3180 return AV_CODEC_ID_NONE;
3186 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3189 if (!av_codec_get_tag2(tags, id, &tag))
3194 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3198 for (i = 0; tags && tags[i]; i++) {
3199 const AVCodecTag *codec_tags = tags[i];
3200 while (codec_tags->id != AV_CODEC_ID_NONE) {
3201 if (codec_tags->id == id) {
3202 *tag = codec_tags->tag;
3211 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3214 for (i = 0; tags && tags[i]; i++) {
3215 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3216 if (id != AV_CODEC_ID_NONE)
3219 return AV_CODEC_ID_NONE;
3222 static void compute_chapters_end(AVFormatContext *s)
3225 int64_t max_time = 0;
3227 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3228 max_time = s->duration +
3229 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3231 for (i = 0; i < s->nb_chapters; i++)
3232 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3233 AVChapter *ch = s->chapters[i];
3234 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3238 for (j = 0; j < s->nb_chapters; j++) {
3239 AVChapter *ch1 = s->chapters[j];
3240 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3242 if (j != i && next_start > ch->start && next_start < end)
3245 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3249 static int get_std_framerate(int i)
3252 return (i + 1) * 1001;
3256 return (i + 31) * 1001 * 12;
3260 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3264 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3267 /* Is the time base unreliable?
3268 * This is a heuristic to balance between quick acceptance of the values in
3269 * the headers vs. some extra checks.
3270 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3271 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3272 * And there are "variable" fps files this needs to detect as well. */
3273 static int tb_unreliable(AVCodecContext *c)
3275 if (c->time_base.den >= 101LL * c->time_base.num ||
3276 c->time_base.den < 5LL * c->time_base.num ||
3277 // c->codec_tag == AV_RL32("DIVX") ||
3278 // c->codec_tag == AV_RL32("XVID") ||
3279 c->codec_tag == AV_RL32("mp4v") ||
3280 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3281 c->codec_id == AV_CODEC_ID_GIF ||
3282 c->codec_id == AV_CODEC_ID_HEVC ||
3283 c->codec_id == AV_CODEC_ID_H264)
3288 int ff_alloc_extradata(AVCodecParameters *par, int size)
3290 av_freep(&par->extradata);
3291 par->extradata_size = 0;
3293 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3294 return AVERROR(EINVAL);
3296 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3297 if (!par->extradata)
3298 return AVERROR(ENOMEM);
3300 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3301 par->extradata_size = size;
3306 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3308 int ret = ff_alloc_extradata(par, size);
3311 ret = avio_read(pb, par->extradata, size);
3313 av_freep(&par->extradata);
3314 par->extradata_size = 0;
3315 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3316 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3322 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3325 int64_t last = st->info->last_dts;
3327 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3328 && ts - (uint64_t)last < INT64_MAX) {
3329 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3330 int64_t duration = ts - last;
3332 if (!st->info->duration_error)
3333 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3334 if (!st->info->duration_error)
3335 return AVERROR(ENOMEM);
3337 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3338 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3339 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3340 if (st->info->duration_error[0][1][i] < 1e10) {
3341 int framerate = get_std_framerate(i);
3342 double sdts = dts*framerate/(1001*12);
3343 for (j= 0; j<2; j++) {
3344 int64_t ticks = llrint(sdts+j*0.5);
3345 double error= sdts - ticks + j*0.5;
3346 st->info->duration_error[j][0][i] += error;
3347 st->info->duration_error[j][1][i] += error*error;
3351 st->info->duration_count++;
3352 st->info->rfps_duration_sum += duration;
3354 if (st->info->duration_count % 10 == 0) {
3355 int n = st->info->duration_count;
3356 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3357 if (st->info->duration_error[0][1][i] < 1e10) {
3358 double a0 = st->info->duration_error[0][0][i] / n;
3359 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3360 double a1 = st->info->duration_error[1][0][i] / n;
3361 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3362 if (error0 > 0.04 && error1 > 0.04) {
3363 st->info->duration_error[0][1][i] = 2e10;
3364 st->info->duration_error[1][1][i] = 2e10;
3370 // ignore the first 4 values, they might have some random jitter
3371 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3372 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3374 if (ts != AV_NOPTS_VALUE)
3375 st->info->last_dts = ts;
3380 void ff_rfps_calculate(AVFormatContext *ic)
3384 for (i = 0; i < ic->nb_streams; i++) {
3385 AVStream *st = ic->streams[i];
3387 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3389 // the check for tb_unreliable() is not completely correct, since this is not about handling
3390 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3391 // ipmovie.c produces.
3392 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)
3393 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);
3394 if (st->info->duration_count>1 && !st->r_frame_rate.num
3395 && tb_unreliable(st->internal->avctx)) {
3397 double best_error= 0.01;
3398 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3400 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3403 if (st->info->codec_info_duration &&
3404 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3406 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3409 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3412 for (k= 0; k<2; k++) {
3413 int n = st->info->duration_count;
3414 double a= st->info->duration_error[k][0][j] / n;
3415 double error= st->info->duration_error[k][1][j]/n - a*a;
3417 if (error < best_error && best_error> 0.000000001) {
3419 num = get_std_framerate(j);
3422 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3425 // do not increase frame rate by more than 1 % in order to match a standard rate.
3426 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3427 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3429 if ( !st->avg_frame_rate.num
3430 && st->r_frame_rate.num && st->info->rfps_duration_sum
3431 && st->info->codec_info_duration <= 0
3432 && st->info->duration_count > 2
3433 && 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
3435 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3436 st->avg_frame_rate = st->r_frame_rate;
3439 av_freep(&st->info->duration_error);
3440 st->info->last_dts = AV_NOPTS_VALUE;
3441 st->info->duration_count = 0;
3442 st->info->rfps_duration_sum = 0;
3446 static int extract_extradata_check(AVStream *st)
3448 const AVBitStreamFilter *f;
3450 f = av_bsf_get_by_name("extract_extradata");
3455 const enum AVCodecID *ids;
3456 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3457 if (*ids == st->codecpar->codec_id)
3464 static int extract_extradata_init(AVStream *st)
3466 AVStreamInternal *sti = st->internal;
3467 const AVBitStreamFilter *f;
3470 f = av_bsf_get_by_name("extract_extradata");
3474 /* check that the codec id is supported */
3475 ret = extract_extradata_check(st);
3479 sti->extract_extradata.pkt = av_packet_alloc();
3480 if (!sti->extract_extradata.pkt)
3481 return AVERROR(ENOMEM);
3483 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3487 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3492 sti->extract_extradata.bsf->time_base_in = st->time_base;
3494 ret = av_bsf_init(sti->extract_extradata.bsf);
3499 sti->extract_extradata.inited = 1;
3503 av_bsf_free(&sti->extract_extradata.bsf);
3504 av_packet_free(&sti->extract_extradata.pkt);
3508 static int extract_extradata(AVStream *st, AVPacket *pkt)
3510 AVStreamInternal *sti = st->internal;
3514 if (!sti->extract_extradata.inited) {
3515 ret = extract_extradata_init(st);
3520 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3523 pkt_ref = sti->extract_extradata.pkt;
3524 ret = av_packet_ref(pkt_ref, pkt);
3528 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3530 av_packet_unref(pkt_ref);
3534 while (ret >= 0 && !sti->avctx->extradata) {
3538 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3540 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3545 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3549 av_assert0(!sti->avctx->extradata);
3550 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3551 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3552 if (!sti->avctx->extradata) {
3553 av_packet_unref(pkt_ref);
3554 return AVERROR(ENOMEM);
3556 memcpy(sti->avctx->extradata, extradata, extradata_size);
3557 sti->avctx->extradata_size = extradata_size;
3559 av_packet_unref(pkt_ref);
3565 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3567 int i, count = 0, ret = 0, j;
3570 AVCodecContext *avctx;
3571 AVPacket pkt1, *pkt;
3572 int64_t old_offset = avio_tell(ic->pb);
3573 // new streams might appear, no options for those
3574 int orig_nb_streams = ic->nb_streams;
3576 int64_t max_analyze_duration = ic->max_analyze_duration;
3577 int64_t max_stream_analyze_duration;
3578 int64_t max_subtitle_analyze_duration;
3579 int64_t probesize = ic->probesize;
3580 int eof_reached = 0;
3581 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3583 flush_codecs = probesize > 0;
3585 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3587 max_stream_analyze_duration = max_analyze_duration;
3588 max_subtitle_analyze_duration = max_analyze_duration;
3589 if (!max_analyze_duration) {
3590 max_stream_analyze_duration =
3591 max_analyze_duration = 5*AV_TIME_BASE;
3592 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3593 if (!strcmp(ic->iformat->name, "flv"))
3594 max_stream_analyze_duration = 90*AV_TIME_BASE;
3595 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3596 max_stream_analyze_duration = 7*AV_TIME_BASE;
3600 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3601 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3603 for (i = 0; i < ic->nb_streams; i++) {
3604 const AVCodec *codec;
3605 AVDictionary *thread_opt = NULL;
3606 st = ic->streams[i];
3607 avctx = st->internal->avctx;
3609 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3610 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3611 /* if (!st->time_base.num)
3613 if (!avctx->time_base.num)
3614 avctx->time_base = st->time_base;
3617 /* check if the caller has overridden the codec id */
3618 #if FF_API_LAVF_AVCTX
3619 FF_DISABLE_DEPRECATION_WARNINGS
3620 if (st->codec->codec_id != st->internal->orig_codec_id) {
3621 st->codecpar->codec_id = st->codec->codec_id;
3622 st->codecpar->codec_type = st->codec->codec_type;
3623 st->internal->orig_codec_id = st->codec->codec_id;
3625 FF_ENABLE_DEPRECATION_WARNINGS
3627 // only for the split stuff
3628 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3629 st->parser = av_parser_init(st->codecpar->codec_id);
3631 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3632 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3633 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3634 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3636 } else if (st->need_parsing) {
3637 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3638 "%s, packets or times may be invalid.\n",
3639 avcodec_get_name(st->codecpar->codec_id));
3643 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3644 st->internal->orig_codec_id = st->codecpar->codec_id;
3646 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3648 goto find_stream_info_err;
3649 if (st->request_probe <= 0)
3650 st->internal->avctx_inited = 1;
3652 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3654 /* Force thread count to 1 since the H.264 decoder will not extract
3655 * SPS and PPS to extradata during multi-threaded decoding. */
3656 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3658 if (ic->codec_whitelist)
3659 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3661 /* Ensure that subtitle_header is properly set. */
3662 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3663 && codec && !avctx->codec) {
3664 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3665 av_log(ic, AV_LOG_WARNING,
3666 "Failed to open codec in %s\n",__FUNCTION__);
3669 // Try to just open decoders, in case this is enough to get parameters.
3670 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3671 if (codec && !avctx->codec)
3672 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3673 av_log(ic, AV_LOG_WARNING,
3674 "Failed to open codec in %s\n",__FUNCTION__);
3677 av_dict_free(&thread_opt);
3680 for (i = 0; i < ic->nb_streams; i++) {
3681 #if FF_API_R_FRAME_RATE
3682 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3684 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3685 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3690 int analyzed_all_streams;
3691 if (ff_check_interrupt(&ic->interrupt_callback)) {
3693 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3697 /* check if one codec still needs to be handled */
3698 for (i = 0; i < ic->nb_streams; i++) {
3699 int fps_analyze_framecount = 20;
3702 st = ic->streams[i];
3703 if (!has_codec_parameters(st, NULL))
3705 /* If the timebase is coarse (like the usual millisecond precision
3706 * of mkv), we need to analyze more frames to reliably arrive at
3707 * the correct fps. */
3708 if (av_q2d(st->time_base) > 0.0005)
3709 fps_analyze_framecount *= 2;
3710 if (!tb_unreliable(st->internal->avctx))
3711 fps_analyze_framecount = 0;
3712 if (ic->fps_probe_size >= 0)
3713 fps_analyze_framecount = ic->fps_probe_size;
3714 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3715 fps_analyze_framecount = 0;
3716 /* variable fps and no guess at the real fps */
3717 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3718 st->info->codec_info_duration_fields/2 :
3719 st->info->duration_count;
3720 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3721 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3722 if (count < fps_analyze_framecount)
3725 // Look at the first 3 frames if there is evidence of frame delay
3726 // but the decoder delay is not set.
3727 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3729 if (!st->internal->avctx->extradata &&
3730 (!st->internal->extract_extradata.inited ||
3731 st->internal->extract_extradata.bsf) &&
3732 extract_extradata_check(st))
3734 if (st->first_dts == AV_NOPTS_VALUE &&
3735 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3736 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3737 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3738 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3741 analyzed_all_streams = 0;
3742 if (!missing_streams || !*missing_streams)
3743 if (i == ic->nb_streams) {
3744 analyzed_all_streams = 1;
3745 /* NOTE: If the format has no header, then we need to read some
3746 * packets to get most of the streams, so we cannot stop here. */
3747 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3748 /* If we found the info for all the codecs, we can stop. */
3750 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3755 /* We did not get all the codec info, but we read too much data. */
3756 if (read_size >= probesize) {
3758 av_log(ic, AV_LOG_DEBUG,
3759 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3760 for (i = 0; i < ic->nb_streams; i++)
3761 if (!ic->streams[i]->r_frame_rate.num &&
3762 ic->streams[i]->info->duration_count <= 1 &&
3763 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3764 strcmp(ic->iformat->name, "image2"))
3765 av_log(ic, AV_LOG_WARNING,
3766 "Stream #%d: not enough frames to estimate rate; "
3767 "consider increasing probesize\n", i);
3771 /* NOTE: A new stream can be added there if no header in file
3772 * (AVFMTCTX_NOHEADER). */
3773 ret = read_frame_internal(ic, &pkt1);
3774 if (ret == AVERROR(EAGAIN))
3785 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3786 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3787 &ic->internal->packet_buffer_end,
3790 goto find_stream_info_err;
3793 st = ic->streams[pkt->stream_index];
3794 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3795 read_size += pkt->size;
3797 avctx = st->internal->avctx;
3798 if (!st->internal->avctx_inited) {
3799 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3801 goto find_stream_info_err;
3802 st->internal->avctx_inited = 1;
3805 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3806 /* check for non-increasing dts */
3807 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3808 st->info->fps_last_dts >= pkt->dts) {
3809 av_log(ic, AV_LOG_DEBUG,
3810 "Non-increasing DTS in stream %d: packet %d with DTS "
3811 "%"PRId64", packet %d with DTS %"PRId64"\n",
3812 st->index, st->info->fps_last_dts_idx,
3813 st->info->fps_last_dts, st->codec_info_nb_frames,
3815 st->info->fps_first_dts =
3816 st->info->fps_last_dts = AV_NOPTS_VALUE;
3818 /* Check for a discontinuity in dts. If the difference in dts
3819 * is more than 1000 times the average packet duration in the
3820 * sequence, we treat it as a discontinuity. */
3821 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3822 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3823 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3824 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3825 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3826 av_log(ic, AV_LOG_WARNING,
3827 "DTS discontinuity in stream %d: packet %d with DTS "
3828 "%"PRId64", packet %d with DTS %"PRId64"\n",
3829 st->index, st->info->fps_last_dts_idx,
3830 st->info->fps_last_dts, st->codec_info_nb_frames,
3832 st->info->fps_first_dts =
3833 st->info->fps_last_dts = AV_NOPTS_VALUE;
3836 /* update stored dts values */
3837 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3838 st->info->fps_first_dts = pkt->dts;
3839 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3841 st->info->fps_last_dts = pkt->dts;
3842 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3844 if (st->codec_info_nb_frames>1) {
3848 if (st->time_base.den > 0)
3849 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3850 if (st->avg_frame_rate.num > 0)
3851 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3854 && st->codec_info_nb_frames>30
3855 && st->info->fps_first_dts != AV_NOPTS_VALUE
3856 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3857 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3859 if (analyzed_all_streams) limit = max_analyze_duration;
3860 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3861 else limit = max_stream_analyze_duration;
3864 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3866 t, pkt->stream_index);
3867 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3868 av_packet_unref(pkt);
3871 if (pkt->duration) {
3872 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3873 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3875 st->info->codec_info_duration += pkt->duration;
3876 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3879 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3880 #if FF_API_R_FRAME_RATE
3881 ff_rfps_add_frame(ic, st, pkt->dts);
3883 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3884 st->info->frame_delay_evidence = 1;
3886 if (!st->internal->avctx->extradata) {
3887 ret = extract_extradata(st, pkt);
3889 goto find_stream_info_err;
3892 /* If still no information, we try to open the codec and to
3893 * decompress the frame. We try to avoid that in most cases as
3894 * it takes longer and uses more memory. For MPEG-4, we need to
3895 * decompress for QuickTime.
3897 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3898 * least one frame of codec data, this makes sure the codec initializes
3899 * the channel configuration and does not only trust the values from
3901 try_decode_frame(ic, st, pkt,
3902 (options && i < orig_nb_streams) ? &options[i] : NULL);
3904 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3905 av_packet_unref(pkt);
3907 st->codec_info_nb_frames++;
3913 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3914 st = ic->streams[stream_index];
3915 avctx = st->internal->avctx;
3916 if (!has_codec_parameters(st, NULL)) {
3917 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3918 if (codec && !avctx->codec) {
3919 AVDictionary *opts = NULL;
3920 if (ic->codec_whitelist)
3921 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3922 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3923 av_log(ic, AV_LOG_WARNING,
3924 "Failed to open codec in %s\n",__FUNCTION__);
3925 av_dict_free(&opts);
3929 // EOF already reached while reading the stream above.
3930 // So continue with reoordering DTS with whatever delay we have.
3931 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3932 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3938 AVPacket empty_pkt = { 0 };
3940 av_init_packet(&empty_pkt);
3942 for (i = 0; i < ic->nb_streams; i++) {
3944 st = ic->streams[i];
3946 /* flush the decoders */
3947 if (st->info->found_decoder == 1) {
3949 err = try_decode_frame(ic, st, &empty_pkt,
3950 (options && i < orig_nb_streams)
3951 ? &options[i] : NULL);
3952 } while (err > 0 && !has_codec_parameters(st, NULL));
3955 av_log(ic, AV_LOG_INFO,
3956 "decoding for stream %d failed\n", st->index);
3962 ff_rfps_calculate(ic);
3964 for (i = 0; i < ic->nb_streams; i++) {
3965 st = ic->streams[i];
3966 avctx = st->internal->avctx;
3967 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3968 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3969 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3970 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3971 avctx->codec_tag= tag;
3974 /* estimate average framerate if not set by demuxer */
3975 if (st->info->codec_info_duration_fields &&
3976 !st->avg_frame_rate.num &&
3977 st->info->codec_info_duration) {
3979 double best_error = 0.01;
3980 AVRational codec_frame_rate = avctx->framerate;
3982 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3983 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3984 st->info->codec_info_duration < 0)
3986 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3987 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3988 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3990 /* Round guessed framerate to a "standard" framerate if it's
3991 * within 1% of the original estimate. */
3992 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3993 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3994 double error = fabs(av_q2d(st->avg_frame_rate) /
3995 av_q2d(std_fps) - 1);
3997 if (error < best_error) {
3999 best_fps = std_fps.num;
4002 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4003 error = fabs(av_q2d(codec_frame_rate) /
4004 av_q2d(std_fps) - 1);
4005 if (error < best_error) {
4007 best_fps = std_fps.num;
4012 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4013 best_fps, 12 * 1001, INT_MAX);
4016 if (!st->r_frame_rate.num) {
4017 if ( avctx->time_base.den * (int64_t) st->time_base.num
4018 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4019 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4020 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4022 st->r_frame_rate.num = st->time_base.den;
4023 st->r_frame_rate.den = st->time_base.num;
4026 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4027 AVRational hw_ratio = { avctx->height, avctx->width };
4028 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4031 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4032 if (!avctx->bits_per_coded_sample)
4033 avctx->bits_per_coded_sample =
4034 av_get_bits_per_sample(avctx->codec_id);
4035 // set stream disposition based on audio service type
4036 switch (avctx->audio_service_type) {
4037 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4038 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4040 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4041 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4043 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4044 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4046 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4047 st->disposition = AV_DISPOSITION_COMMENT;
4049 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4050 st->disposition = AV_DISPOSITION_KARAOKE;
4057 estimate_timings(ic, old_offset);
4059 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4061 if (ret >= 0 && ic->nb_streams)
4062 /* We could not have all the codec parameters before EOF. */
4064 for (i = 0; i < ic->nb_streams; i++) {
4066 st = ic->streams[i];
4068 /* if no packet was ever seen, update context now for has_codec_parameters */
4069 if (!st->internal->avctx_inited) {
4070 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4071 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4072 st->codecpar->format = st->internal->avctx->sample_fmt;
4073 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4075 goto find_stream_info_err;
4077 if (!has_codec_parameters(st, &errmsg)) {
4079 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4080 av_log(ic, AV_LOG_WARNING,
4081 "Could not find codec parameters for stream %d (%s): %s\n"
4082 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4089 compute_chapters_end(ic);
4091 /* update the stream parameters from the internal codec contexts */
4092 for (i = 0; i < ic->nb_streams; i++) {
4093 st = ic->streams[i];
4095 if (st->internal->avctx_inited) {
4096 int orig_w = st->codecpar->width;
4097 int orig_h = st->codecpar->height;
4098 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4100 goto find_stream_info_err;
4102 // The decoder might reduce the video size by the lowres factor.
4103 if (st->internal->avctx->lowres && orig_w) {
4104 st->codecpar->width = orig_w;
4105 st->codecpar->height = orig_h;
4110 #if FF_API_LAVF_AVCTX
4111 FF_DISABLE_DEPRECATION_WARNINGS
4112 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4114 goto find_stream_info_err;
4117 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4118 // by the lowres factor.
4119 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4120 st->codec->lowres = st->internal->avctx->lowres;
4121 st->codec->width = st->internal->avctx->width;
4122 st->codec->height = st->internal->avctx->height;
4126 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4127 st->codec->time_base = st->internal->avctx->time_base;
4128 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4130 st->codec->framerate = st->avg_frame_rate;
4132 if (st->internal->avctx->subtitle_header) {
4133 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4134 if (!st->codec->subtitle_header)
4135 goto find_stream_info_err;
4136 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4137 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4138 st->codec->subtitle_header_size);
4141 // Fields unavailable in AVCodecParameters
4142 st->codec->coded_width = st->internal->avctx->coded_width;
4143 st->codec->coded_height = st->internal->avctx->coded_height;
4144 st->codec->properties = st->internal->avctx->properties;
4145 FF_ENABLE_DEPRECATION_WARNINGS
4148 st->internal->avctx_inited = 0;
4151 find_stream_info_err:
4152 for (i = 0; i < ic->nb_streams; i++) {
4153 st = ic->streams[i];
4155 av_freep(&st->info->duration_error);
4156 avcodec_close(ic->streams[i]->internal->avctx);
4157 av_freep(&ic->streams[i]->info);
4158 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4159 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4162 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4163 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4167 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4171 for (i = 0; i < ic->nb_programs; i++) {
4172 if (ic->programs[i] == last) {
4176 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4177 if (ic->programs[i]->stream_index[j] == s)
4178 return ic->programs[i];
4184 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4185 int wanted_stream_nb, int related_stream,
4186 AVCodec **decoder_ret, int flags)
4188 int i, nb_streams = ic->nb_streams;
4189 int ret = AVERROR_STREAM_NOT_FOUND;
4190 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4191 int count, multiframe, disposition;
4192 int64_t best_bitrate = -1;
4194 unsigned *program = NULL;
4195 const AVCodec *decoder = NULL, *best_decoder = NULL;
4197 if (related_stream >= 0 && wanted_stream_nb < 0) {
4198 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4200 program = p->stream_index;
4201 nb_streams = p->nb_stream_indexes;
4204 for (i = 0; i < nb_streams; i++) {
4205 int real_stream_index = program ? program[i] : i;
4206 AVStream *st = ic->streams[real_stream_index];
4207 AVCodecParameters *par = st->codecpar;
4208 if (par->codec_type != type)
4210 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4212 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4215 decoder = find_decoder(ic, st, par->codec_id);
4218 ret = AVERROR_DECODER_NOT_FOUND;
4222 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4223 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4224 count = st->codec_info_nb_frames;
4225 bitrate = par->bit_rate;
4226 multiframe = FFMIN(5, count);
4227 if ((best_disposition > disposition) ||
4228 (best_disposition == disposition && best_multiframe > multiframe) ||
4229 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4230 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4232 best_disposition = disposition;
4234 best_bitrate = bitrate;
4235 best_multiframe = multiframe;
4236 ret = real_stream_index;
4237 best_decoder = decoder;
4238 if (program && i == nb_streams - 1 && ret < 0) {
4240 nb_streams = ic->nb_streams;
4241 /* no related stream found, try again with everything */
4246 *decoder_ret = (AVCodec*)best_decoder;
4250 /*******************************************************/
4252 int av_read_play(AVFormatContext *s)
4254 if (s->iformat->read_play)
4255 return s->iformat->read_play(s);
4257 return avio_pause(s->pb, 0);
4258 return AVERROR(ENOSYS);
4261 int av_read_pause(AVFormatContext *s)
4263 if (s->iformat->read_pause)
4264 return s->iformat->read_pause(s);
4266 return avio_pause(s->pb, 1);
4267 return AVERROR(ENOSYS);
4270 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4275 dst->time_base = src->time_base;
4276 dst->nb_frames = src->nb_frames;
4277 dst->disposition = src->disposition;
4278 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4279 dst->avg_frame_rate = src->avg_frame_rate;
4280 dst->r_frame_rate = src->r_frame_rate;
4282 av_dict_free(&dst->metadata);
4283 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4287 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4291 /* Free existing side data*/
4292 for (i = 0; i < dst->nb_side_data; i++)
4293 av_free(dst->side_data[i].data);
4294 av_freep(&dst->side_data);
4295 dst->nb_side_data = 0;
4297 /* Copy side data if present */
4298 if (src->nb_side_data) {
4299 dst->side_data = av_mallocz_array(src->nb_side_data,
4300 sizeof(AVPacketSideData));
4301 if (!dst->side_data)
4302 return AVERROR(ENOMEM);
4303 dst->nb_side_data = src->nb_side_data;
4305 for (i = 0; i < src->nb_side_data; i++) {
4306 uint8_t *data = av_memdup(src->side_data[i].data,
4307 src->side_data[i].size);
4309 return AVERROR(ENOMEM);
4310 dst->side_data[i].type = src->side_data[i].type;
4311 dst->side_data[i].size = src->side_data[i].size;
4312 dst->side_data[i].data = data;
4316 #if FF_API_LAVF_FFSERVER
4317 FF_DISABLE_DEPRECATION_WARNINGS
4318 av_freep(&dst->recommended_encoder_configuration);
4319 if (src->recommended_encoder_configuration) {
4320 const char *conf_str = src->recommended_encoder_configuration;
4321 dst->recommended_encoder_configuration = av_strdup(conf_str);
4322 if (!dst->recommended_encoder_configuration)
4323 return AVERROR(ENOMEM);
4325 FF_ENABLE_DEPRECATION_WARNINGS
4331 static void free_stream(AVStream **pst)
4333 AVStream *st = *pst;
4339 for (i = 0; i < st->nb_side_data; i++)
4340 av_freep(&st->side_data[i].data);
4341 av_freep(&st->side_data);
4344 av_parser_close(st->parser);
4346 if (st->attached_pic.data)
4347 av_packet_unref(&st->attached_pic);
4350 avcodec_free_context(&st->internal->avctx);
4351 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4352 av_bsf_free(&st->internal->bsfcs[i]);
4353 av_freep(&st->internal->bsfcs);
4355 av_freep(&st->internal->priv_pts);
4356 av_bsf_free(&st->internal->extract_extradata.bsf);
4357 av_packet_free(&st->internal->extract_extradata.pkt);
4359 av_freep(&st->internal);
4361 av_dict_free(&st->metadata);
4362 avcodec_parameters_free(&st->codecpar);
4363 av_freep(&st->probe_data.buf);
4364 av_freep(&st->index_entries);
4365 #if FF_API_LAVF_AVCTX
4366 FF_DISABLE_DEPRECATION_WARNINGS
4367 avcodec_free_context(&st->codec);
4368 FF_ENABLE_DEPRECATION_WARNINGS
4370 av_freep(&st->priv_data);
4372 av_freep(&st->info->duration_error);
4373 av_freep(&st->info);
4374 #if FF_API_LAVF_FFSERVER
4375 FF_DISABLE_DEPRECATION_WARNINGS
4376 av_freep(&st->recommended_encoder_configuration);
4377 FF_ENABLE_DEPRECATION_WARNINGS
4383 void ff_free_stream(AVFormatContext *s, AVStream *st)
4385 av_assert0(s->nb_streams>0);
4386 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4388 free_stream(&s->streams[ --s->nb_streams ]);
4391 void avformat_free_context(AVFormatContext *s)
4399 if (s->iformat && s->iformat->priv_class && s->priv_data)
4400 av_opt_free(s->priv_data);
4401 if (s->oformat && s->oformat->priv_class && s->priv_data)
4402 av_opt_free(s->priv_data);
4404 for (i = s->nb_streams - 1; i >= 0; i--)
4405 ff_free_stream(s, s->streams[i]);
4408 for (i = s->nb_programs - 1; i >= 0; i--) {
4409 av_dict_free(&s->programs[i]->metadata);
4410 av_freep(&s->programs[i]->stream_index);
4411 av_freep(&s->programs[i]);
4413 av_freep(&s->programs);
4414 av_freep(&s->priv_data);
4415 while (s->nb_chapters--) {
4416 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4417 av_freep(&s->chapters[s->nb_chapters]);
4419 av_freep(&s->chapters);
4420 av_dict_free(&s->metadata);
4421 av_dict_free(&s->internal->id3v2_meta);
4422 av_freep(&s->streams);
4423 flush_packet_queue(s);
4424 av_freep(&s->internal);
4429 void avformat_close_input(AVFormatContext **ps)
4440 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4441 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4444 flush_packet_queue(s);
4447 if (s->iformat->read_close)
4448 s->iformat->read_close(s);
4450 avformat_free_context(s);
4457 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4463 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4464 if (s->max_streams < INT_MAX/sizeof(*streams))
4465 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);
4468 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4471 s->streams = streams;
4473 st = av_mallocz(sizeof(AVStream));
4476 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4480 st->info->last_dts = AV_NOPTS_VALUE;
4482 #if FF_API_LAVF_AVCTX
4483 FF_DISABLE_DEPRECATION_WARNINGS
4484 st->codec = avcodec_alloc_context3(c);
4490 FF_ENABLE_DEPRECATION_WARNINGS
4493 st->internal = av_mallocz(sizeof(*st->internal));
4497 st->codecpar = avcodec_parameters_alloc();
4501 st->internal->avctx = avcodec_alloc_context3(NULL);
4502 if (!st->internal->avctx)
4506 #if FF_API_LAVF_AVCTX
4507 FF_DISABLE_DEPRECATION_WARNINGS
4508 /* no default bitrate if decoding */
4509 st->codec->bit_rate = 0;
4510 FF_ENABLE_DEPRECATION_WARNINGS
4513 /* default pts setting is MPEG-like */
4514 avpriv_set_pts_info(st, 33, 1, 90000);
4515 /* we set the current DTS to 0 so that formats without any timestamps
4516 * but durations get some timestamps, formats with some unknown
4517 * timestamps have their first few packets buffered and the
4518 * timestamps corrected before they are returned to the user */
4519 st->cur_dts = RELATIVE_TS_BASE;
4521 st->cur_dts = AV_NOPTS_VALUE;
4524 st->index = s->nb_streams;
4525 st->start_time = AV_NOPTS_VALUE;
4526 st->duration = AV_NOPTS_VALUE;
4527 st->first_dts = AV_NOPTS_VALUE;
4528 st->probe_packets = MAX_PROBE_PACKETS;
4529 st->pts_wrap_reference = AV_NOPTS_VALUE;
4530 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4532 st->last_IP_pts = AV_NOPTS_VALUE;
4533 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4534 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4535 st->pts_buffer[i] = AV_NOPTS_VALUE;
4537 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4539 #if FF_API_R_FRAME_RATE
4540 st->info->last_dts = AV_NOPTS_VALUE;
4542 st->info->fps_first_dts = AV_NOPTS_VALUE;
4543 st->info->fps_last_dts = AV_NOPTS_VALUE;
4545 st->inject_global_side_data = s->internal->inject_global_side_data;
4547 st->internal->need_context_update = 1;
4549 s->streams[s->nb_streams++] = st;
4556 AVProgram *av_new_program(AVFormatContext *ac, int id)
4558 AVProgram *program = NULL;
4561 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4563 for (i = 0; i < ac->nb_programs; i++)
4564 if (ac->programs[i]->id == id)
4565 program = ac->programs[i];
4568 program = av_mallocz(sizeof(AVProgram));
4571 dynarray_add(&ac->programs, &ac->nb_programs, program);
4572 program->discard = AVDISCARD_NONE;
4573 program->pmt_version = -1;
4576 program->pts_wrap_reference = AV_NOPTS_VALUE;
4577 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4579 program->start_time =
4580 program->end_time = AV_NOPTS_VALUE;
4585 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4586 int64_t start, int64_t end, const char *title)
4588 AVChapter *chapter = NULL;
4591 if (end != AV_NOPTS_VALUE && start > end) {
4592 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4596 for (i = 0; i < s->nb_chapters; i++)
4597 if (s->chapters[i]->id == id)
4598 chapter = s->chapters[i];
4601 chapter = av_mallocz(sizeof(AVChapter));
4604 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4606 av_dict_set(&chapter->metadata, "title", title, 0);
4608 chapter->time_base = time_base;
4609 chapter->start = start;
4615 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4618 AVProgram *program = NULL;
4621 if (idx >= ac->nb_streams) {
4622 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4626 for (i = 0; i < ac->nb_programs; i++) {
4627 if (ac->programs[i]->id != progid)
4629 program = ac->programs[i];
4630 for (j = 0; j < program->nb_stream_indexes; j++)
4631 if (program->stream_index[j] == idx)
4634 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4637 program->stream_index = tmp;
4638 program->stream_index[program->nb_stream_indexes++] = idx;
4643 uint64_t ff_ntp_time(void)
4645 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4648 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4650 uint64_t ntp_ts, frac_part, sec;
4653 //current ntp time in seconds and micro seconds
4654 sec = ntp_time_us / 1000000;
4655 usec = ntp_time_us % 1000000;
4657 //encoding in ntp timestamp format
4658 frac_part = usec * 0xFFFFFFFFULL;
4659 frac_part /= 1000000;
4661 if (sec > 0xFFFFFFFFULL)
4662 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4665 ntp_ts |= frac_part;
4670 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4673 char *q, buf1[20], c;
4674 int nd, len, percentd_found;
4686 while (av_isdigit(*p))
4687 nd = nd * 10 + *p++ - '0';
4689 } while (av_isdigit(c));
4695 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4700 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4702 if ((q - buf + len) > buf_size - 1)
4704 memcpy(q, buf1, len);
4712 if ((q - buf) < buf_size - 1)
4716 if (!percentd_found)
4725 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4727 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4730 void av_url_split(char *proto, int proto_size,
4731 char *authorization, int authorization_size,
4732 char *hostname, int hostname_size,
4733 int *port_ptr, char *path, int path_size, const char *url)
4735 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4741 if (authorization_size > 0)
4742 authorization[0] = 0;
4743 if (hostname_size > 0)
4748 /* parse protocol */
4749 if ((p = strchr(url, ':'))) {
4750 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4757 /* no protocol means plain filename */
4758 av_strlcpy(path, url, path_size);
4762 /* separate path from hostname */
4763 ls = strchr(p, '/');
4764 ls2 = strchr(p, '?');
4768 ls = FFMIN(ls, ls2);
4770 av_strlcpy(path, ls, path_size);
4772 ls = &p[strlen(p)]; // XXX
4774 /* the rest is hostname, use that to parse auth/port */
4776 /* authorization (user[:pass]@hostname) */
4778 while ((at = strchr(p, '@')) && at < ls) {
4779 av_strlcpy(authorization, at2,
4780 FFMIN(authorization_size, at + 1 - at2));
4781 p = at + 1; /* skip '@' */
4784 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4786 av_strlcpy(hostname, p + 1,
4787 FFMIN(hostname_size, brk - p));
4788 if (brk[1] == ':' && port_ptr)
4789 *port_ptr = atoi(brk + 2);
4790 } else if ((col = strchr(p, ':')) && col < ls) {
4791 av_strlcpy(hostname, p,
4792 FFMIN(col + 1 - p, hostname_size));
4794 *port_ptr = atoi(col + 1);
4796 av_strlcpy(hostname, p,
4797 FFMIN(ls + 1 - p, hostname_size));
4801 int ff_mkdir_p(const char *path)
4804 char *temp = av_strdup(path);
4808 if (!path || !temp) {
4812 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4814 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4818 for ( ; *pos != '\0'; ++pos) {
4819 if (*pos == '/' || *pos == '\\') {
4822 ret = mkdir(temp, 0755);
4827 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4828 ret = mkdir(temp, 0755);
4835 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4838 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4841 'C', 'D', 'E', 'F' };
4842 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4845 'c', 'd', 'e', 'f' };
4846 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4848 for (i = 0; i < s; i++) {
4849 buff[i * 2] = hex_table[src[i] >> 4];
4850 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4856 int ff_hex_to_data(uint8_t *data, const char *p)
4863 p += strspn(p, SPACE_CHARS);
4866 c = av_toupper((unsigned char) *p++);
4867 if (c >= '0' && c <= '9')
4869 else if (c >= 'A' && c <= 'F')
4884 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4885 unsigned int pts_num, unsigned int pts_den)
4888 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4889 if (new_tb.num != pts_num)
4890 av_log(NULL, AV_LOG_DEBUG,
4891 "st:%d removing common factor %d from timebase\n",
4892 s->index, pts_num / new_tb.num);
4894 av_log(NULL, AV_LOG_WARNING,
4895 "st:%d has too large timebase, reducing\n", s->index);
4897 if (new_tb.num <= 0 || new_tb.den <= 0) {
4898 av_log(NULL, AV_LOG_ERROR,
4899 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4900 new_tb.num, new_tb.den,
4904 s->time_base = new_tb;
4905 #if FF_API_LAVF_AVCTX
4906 FF_DISABLE_DEPRECATION_WARNINGS
4907 s->codec->pkt_timebase = new_tb;
4908 FF_ENABLE_DEPRECATION_WARNINGS
4910 s->internal->avctx->pkt_timebase = new_tb;
4911 s->pts_wrap_bits = pts_wrap_bits;
4914 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4917 const char *ptr = str;
4919 /* Parse key=value pairs. */
4922 char *dest = NULL, *dest_end;
4923 int key_len, dest_len = 0;
4925 /* Skip whitespace and potential commas. */
4926 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4933 if (!(ptr = strchr(key, '=')))
4936 key_len = ptr - key;
4938 callback_get_buf(context, key, key_len, &dest, &dest_len);
4939 dest_end = dest + dest_len - 1;
4943 while (*ptr && *ptr != '\"') {
4947 if (dest && dest < dest_end)
4951 if (dest && dest < dest_end)
4959 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4960 if (dest && dest < dest_end)
4968 int ff_find_stream_index(AVFormatContext *s, int id)
4971 for (i = 0; i < s->nb_streams; i++)
4972 if (s->streams[i]->id == id)
4977 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4981 unsigned int codec_tag;
4982 if (ofmt->query_codec)
4983 return ofmt->query_codec(codec_id, std_compliance);
4984 else if (ofmt->codec_tag)
4985 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4986 else if (codec_id == ofmt->video_codec ||
4987 codec_id == ofmt->audio_codec ||
4988 codec_id == ofmt->subtitle_codec ||
4989 codec_id == ofmt->data_codec)
4992 return AVERROR_PATCHWELCOME;
4995 int avformat_network_init(void)
4999 if ((ret = ff_network_init()) < 0)
5001 if ((ret = ff_tls_init()) < 0)
5007 int avformat_network_deinit(void)
5016 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5017 uint64_t channel_layout, int32_t sample_rate,
5018 int32_t width, int32_t height)
5024 return AVERROR(EINVAL);
5027 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5029 if (channel_layout) {
5031 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5035 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5037 if (width || height) {
5039 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5041 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5043 return AVERROR(ENOMEM);
5044 bytestream_put_le32(&data, flags);
5046 bytestream_put_le32(&data, channels);
5048 bytestream_put_le64(&data, channel_layout);
5050 bytestream_put_le32(&data, sample_rate);
5051 if (width || height) {
5052 bytestream_put_le32(&data, width);
5053 bytestream_put_le32(&data, height);
5058 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5060 AVRational undef = {0, 1};
5061 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5062 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5063 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5065 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5066 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5067 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5068 stream_sample_aspect_ratio = undef;
5070 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5071 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5072 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5073 frame_sample_aspect_ratio = undef;
5075 if (stream_sample_aspect_ratio.num)
5076 return stream_sample_aspect_ratio;
5078 return frame_sample_aspect_ratio;
5081 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5083 AVRational fr = st->r_frame_rate;
5084 AVRational codec_fr = st->internal->avctx->framerate;
5085 AVRational avg_fr = st->avg_frame_rate;
5087 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5088 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5093 if (st->internal->avctx->ticks_per_frame > 1) {
5094 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5095 (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))
5103 * Matches a stream specifier (but ignores requested index).
5105 * @param indexptr set to point to the requested stream index if there is one
5107 * @return <0 on error
5108 * 0 if st is NOT a matching stream
5109 * >0 if st is a matching stream
5111 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5112 const char *spec, const char **indexptr, AVProgram **p)
5114 int match = 1; /* Stores if the specifier matches so far. */
5116 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5120 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5121 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5122 enum AVMediaType type;
5126 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5127 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5128 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5129 case 'd': type = AVMEDIA_TYPE_DATA; break;
5130 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5131 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5132 default: av_assert0(0);
5134 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5135 return AVERROR(EINVAL);
5137 #if FF_API_LAVF_AVCTX
5138 FF_DISABLE_DEPRECATION_WARNINGS
5139 if (type != st->codecpar->codec_type
5140 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5142 FF_ENABLE_DEPRECATION_WARNINGS
5144 if (type != st->codecpar->codec_type)
5147 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5149 } else if (*spec == 'p' && *(spec + 1) == ':') {
5154 prog_id = strtol(spec, &endptr, 0);
5155 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5156 if (spec == endptr || (*endptr && *endptr++ != ':'))
5157 return AVERROR(EINVAL);
5160 for (i = 0; i < s->nb_programs; i++) {
5161 if (s->programs[i]->id != prog_id)
5164 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5165 if (st->index == s->programs[i]->stream_index[j]) {
5168 *p = s->programs[i];
5177 } else if (*spec == '#' ||
5178 (*spec == 'i' && *(spec + 1) == ':')) {
5181 spec += 1 + (*spec == 'i');
5182 stream_id = strtol(spec, &endptr, 0);
5183 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5184 return AVERROR(EINVAL);
5185 return match && (stream_id == st->id);
5186 } else if (*spec == 'm' && *(spec + 1) == ':') {
5187 AVDictionaryEntry *tag;
5193 val = strchr(spec, ':');
5195 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5197 return AVERROR(ENOMEM);
5199 tag = av_dict_get(st->metadata, key, NULL, 0);
5201 if (!val || !strcmp(tag->value, val + 1))
5210 return match && ret;
5211 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5212 AVCodecParameters *par = st->codecpar;
5213 #if FF_API_LAVF_AVCTX
5214 FF_DISABLE_DEPRECATION_WARNINGS
5215 AVCodecContext *codec = st->codec;
5216 FF_ENABLE_DEPRECATION_WARNINGS
5219 switch (par->codec_type) {
5220 case AVMEDIA_TYPE_AUDIO:
5221 val = par->sample_rate && par->channels;
5222 #if FF_API_LAVF_AVCTX
5223 val = val || (codec->sample_rate && codec->channels);
5225 if (par->format == AV_SAMPLE_FMT_NONE
5226 #if FF_API_LAVF_AVCTX
5227 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5232 case AVMEDIA_TYPE_VIDEO:
5233 val = par->width && par->height;
5234 #if FF_API_LAVF_AVCTX
5235 val = val || (codec->width && codec->height);
5237 if (par->format == AV_PIX_FMT_NONE
5238 #if FF_API_LAVF_AVCTX
5239 && codec->pix_fmt == AV_PIX_FMT_NONE
5244 case AVMEDIA_TYPE_UNKNOWN:
5251 #if FF_API_LAVF_AVCTX
5252 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5254 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5257 return AVERROR(EINVAL);
5265 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5270 const char *indexptr = NULL;
5271 AVProgram *p = NULL;
5274 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5281 index = strtol(indexptr, &endptr, 0);
5282 if (*endptr) { /* We can't have anything after the requested index. */
5283 ret = AVERROR(EINVAL);
5287 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5288 if (spec == indexptr)
5289 return (index == st->index);
5291 /* If we requested a matching stream index, we have to ensure st is that. */
5292 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5293 for (int i = 0; i < nb_streams && index >= 0; i++) {
5294 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5295 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5298 if (ret > 0 && index-- == 0 && st == candidate)
5304 if (ret == AVERROR(EINVAL))
5305 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5309 int ff_generate_avci_extradata(AVStream *st)
5311 static const uint8_t avci100_1080p_extradata[] = {
5313 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5314 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5315 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5316 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5317 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5318 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5319 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5320 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5321 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5323 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5326 static const uint8_t avci100_1080i_extradata[] = {
5328 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5329 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5330 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5331 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5332 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5333 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5334 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5335 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5336 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5337 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5338 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5340 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5343 static const uint8_t avci50_1080p_extradata[] = {
5345 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5346 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5347 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5348 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5349 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5350 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5351 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5352 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5353 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5355 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5358 static const uint8_t avci50_1080i_extradata[] = {
5360 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5361 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5362 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5363 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5364 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5365 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5366 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5367 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5368 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5369 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5370 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5372 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5375 static const uint8_t avci100_720p_extradata[] = {
5377 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5378 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5379 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5380 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5381 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5382 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5383 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5384 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5385 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5386 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5388 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5391 static const uint8_t avci50_720p_extradata[] = {
5393 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5394 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5395 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5396 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5397 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5398 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5399 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5400 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5401 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5403 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5407 const uint8_t *data = NULL;
5410 if (st->codecpar->width == 1920) {
5411 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5412 data = avci100_1080p_extradata;
5413 size = sizeof(avci100_1080p_extradata);
5415 data = avci100_1080i_extradata;
5416 size = sizeof(avci100_1080i_extradata);
5418 } else if (st->codecpar->width == 1440) {
5419 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5420 data = avci50_1080p_extradata;
5421 size = sizeof(avci50_1080p_extradata);
5423 data = avci50_1080i_extradata;
5424 size = sizeof(avci50_1080i_extradata);
5426 } else if (st->codecpar->width == 1280) {
5427 data = avci100_720p_extradata;
5428 size = sizeof(avci100_720p_extradata);
5429 } else if (st->codecpar->width == 960) {
5430 data = avci50_720p_extradata;
5431 size = sizeof(avci50_720p_extradata);
5437 av_freep(&st->codecpar->extradata);
5438 if (ff_alloc_extradata(st->codecpar, size))
5439 return AVERROR(ENOMEM);
5440 memcpy(st->codecpar->extradata, data, size);
5445 uint8_t *av_stream_get_side_data(const AVStream *st,
5446 enum AVPacketSideDataType type, int *size)
5450 for (i = 0; i < st->nb_side_data; i++) {
5451 if (st->side_data[i].type == type) {
5453 *size = st->side_data[i].size;
5454 return st->side_data[i].data;
5460 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5461 uint8_t *data, size_t size)
5463 AVPacketSideData *sd, *tmp;
5466 for (i = 0; i < st->nb_side_data; i++) {
5467 sd = &st->side_data[i];
5469 if (sd->type == type) {
5470 av_freep(&sd->data);
5477 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5478 return AVERROR(ERANGE);
5480 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5482 return AVERROR(ENOMEM);
5485 st->side_data = tmp;
5488 sd = &st->side_data[st->nb_side_data - 1];
5496 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5500 uint8_t *data = av_malloc(size);
5505 ret = av_stream_add_side_data(st, type, data, size);
5514 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5517 const AVBitStreamFilter *bsf;
5519 AVCodecParameters *in_par;
5521 if (!(bsf = av_bsf_get_by_name(name))) {
5522 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5523 return AVERROR_BSF_NOT_FOUND;
5526 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5529 if (st->internal->nb_bsfcs) {
5530 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5531 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5533 in_par = st->codecpar;
5534 bsfc->time_base_in = st->time_base;
5537 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5542 if (args && bsfc->filter->priv_class) {
5543 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5544 const char * shorthand[2] = {NULL};
5547 shorthand[0] = opt->name;
5549 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5555 if ((ret = av_bsf_init(bsfc)) < 0) {
5560 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5565 av_log(NULL, AV_LOG_VERBOSE,
5566 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5567 name, args ? args : "");
5572 FF_DISABLE_DEPRECATION_WARNINGS
5573 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5574 AVBitStreamFilterContext *bsfc)
5578 AVPacket new_pkt = *pkt;
5579 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5580 &new_pkt.data, &new_pkt.size,
5581 pkt->data, pkt->size,
5582 pkt->flags & AV_PKT_FLAG_KEY);
5583 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5584 av_packet_unref(pkt);
5585 memset(pkt, 0, sizeof(*pkt));
5588 if(a == 0 && new_pkt.data != pkt->data) {
5589 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
5591 memcpy(t, new_pkt.data, new_pkt.size);
5592 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5597 a = AVERROR(ENOMEM);
5601 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5602 av_buffer_default_free, NULL, 0);
5604 pkt->side_data = NULL;
5605 pkt->side_data_elems = 0;
5606 av_packet_unref(pkt);
5608 av_freep(&new_pkt.data);
5609 a = AVERROR(ENOMEM);
5613 av_log(codec, AV_LOG_ERROR,
5614 "Failed to open bitstream filter %s for stream %d with codec %s",
5615 bsfc->filter->name, pkt->stream_index,
5616 codec->codec ? codec->codec->name : "copy");
5626 FF_ENABLE_DEPRECATION_WARNINGS
5629 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5632 return AVERROR(EINVAL);
5634 if (!(s->oformat->flags & AVFMT_NOFILE))
5635 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5639 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5642 s->io_close(s, *pb);
5646 int ff_is_http_proto(char *filename) {
5647 const char *proto = avio_find_protocol_name(filename);
5648 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5651 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5653 AVDictionaryEntry *entry;
5654 int64_t parsed_timestamp;
5656 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5657 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5658 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5661 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5668 int ff_standardize_creation_time(AVFormatContext *s)
5671 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5673 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5677 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5682 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5684 if (size != AVPALETTE_SIZE) {
5685 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5686 return AVERROR_INVALIDDATA;
5688 memcpy(palette, side_data, AVPALETTE_SIZE);
5692 if (ret == CONTAINS_PAL) {
5694 for (i = 0; i < AVPALETTE_COUNT; i++)
5695 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5702 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5707 ret = av_bprint_finalize(buf, &str);
5710 if (!av_bprint_is_complete(buf)) {
5712 return AVERROR(ENOMEM);
5715 par->extradata = str;
5716 /* Note: the string is NUL terminated (so extradata can be read as a
5717 * string), but the ending character is not accounted in the size (in
5718 * binary formats you are likely not supposed to mux that character). When
5719 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5721 par->extradata_size = buf->len;
5725 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5726 AVStream *ost, const AVStream *ist,
5727 enum AVTimebaseSource copy_tb)
5729 //TODO: use [io]st->internal->avctx
5730 const AVCodecContext *dec_ctx = ist->codec;
5731 AVCodecContext *enc_ctx = ost->codec;
5733 enc_ctx->time_base = ist->time_base;
5735 * Avi is a special case here because it supports variable fps but
5736 * having the fps and timebase differe significantly adds quite some
5739 if (!strcmp(ofmt->name, "avi")) {
5740 #if FF_API_R_FRAME_RATE
5741 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5742 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5743 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5744 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5745 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5746 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5747 enc_ctx->time_base.num = ist->r_frame_rate.den;
5748 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5749 enc_ctx->ticks_per_frame = 2;
5752 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5753 && av_q2d(ist->time_base) < 1.0/500
5754 || copy_tb == AVFMT_TBCF_DECODER) {
5755 enc_ctx->time_base = dec_ctx->time_base;
5756 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5757 enc_ctx->time_base.den *= 2;
5758 enc_ctx->ticks_per_frame = 2;
5760 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5761 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5762 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5763 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5764 && av_q2d(ist->time_base) < 1.0/500
5765 || copy_tb == AVFMT_TBCF_DECODER) {
5766 enc_ctx->time_base = dec_ctx->time_base;
5767 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5771 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5772 && dec_ctx->time_base.num < dec_ctx->time_base.den
5773 && dec_ctx->time_base.num > 0
5774 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5775 enc_ctx->time_base = dec_ctx->time_base;
5778 if (ost->avg_frame_rate.num)
5779 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5781 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5782 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5787 AVRational av_stream_get_codec_timebase(const AVStream *st)
5789 // See avformat_transfer_internal_stream_timing_info() TODO.
5790 #if FF_API_LAVF_AVCTX
5791 FF_DISABLE_DEPRECATION_WARNINGS
5792 return st->codec->time_base;
5793 FF_ENABLE_DEPRECATION_WARNINGS
5795 return st->internal->avctx->time_base;
5799 void ff_format_set_url(AVFormatContext *s, char *url)
5804 #if FF_API_FORMAT_FILENAME
5805 FF_DISABLE_DEPRECATION_WARNINGS
5806 av_strlcpy(s->filename, url, sizeof(s->filename));
5807 FF_ENABLE_DEPRECATION_WARNINGS