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 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3352 st->info->duration_count++;
3353 st->info->rfps_duration_sum += duration;
3356 if (st->info->duration_count % 10 == 0) {
3357 int n = st->info->duration_count;
3358 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3359 if (st->info->duration_error[0][1][i] < 1e10) {
3360 double a0 = st->info->duration_error[0][0][i] / n;
3361 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3362 double a1 = st->info->duration_error[1][0][i] / n;
3363 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3364 if (error0 > 0.04 && error1 > 0.04) {
3365 st->info->duration_error[0][1][i] = 2e10;
3366 st->info->duration_error[1][1][i] = 2e10;
3372 // ignore the first 4 values, they might have some random jitter
3373 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3374 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3376 if (ts != AV_NOPTS_VALUE)
3377 st->info->last_dts = ts;
3382 void ff_rfps_calculate(AVFormatContext *ic)
3386 for (i = 0; i < ic->nb_streams; i++) {
3387 AVStream *st = ic->streams[i];
3389 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3391 // the check for tb_unreliable() is not completely correct, since this is not about handling
3392 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3393 // ipmovie.c produces.
3394 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)
3395 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);
3396 if (st->info->duration_count>1 && !st->r_frame_rate.num
3397 && tb_unreliable(st->internal->avctx)) {
3399 double best_error= 0.01;
3400 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3402 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3405 if (st->info->codec_info_duration &&
3406 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3408 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3411 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3414 for (k= 0; k<2; k++) {
3415 int n = st->info->duration_count;
3416 double a= st->info->duration_error[k][0][j] / n;
3417 double error= st->info->duration_error[k][1][j]/n - a*a;
3419 if (error < best_error && best_error> 0.000000001) {
3421 num = get_std_framerate(j);
3424 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3427 // do not increase frame rate by more than 1 % in order to match a standard rate.
3428 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3429 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3431 if ( !st->avg_frame_rate.num
3432 && st->r_frame_rate.num && st->info->rfps_duration_sum
3433 && st->info->codec_info_duration <= 0
3434 && st->info->duration_count > 2
3435 && 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
3437 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3438 st->avg_frame_rate = st->r_frame_rate;
3441 av_freep(&st->info->duration_error);
3442 st->info->last_dts = AV_NOPTS_VALUE;
3443 st->info->duration_count = 0;
3444 st->info->rfps_duration_sum = 0;
3448 static int extract_extradata_check(AVStream *st)
3450 const AVBitStreamFilter *f;
3452 f = av_bsf_get_by_name("extract_extradata");
3457 const enum AVCodecID *ids;
3458 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3459 if (*ids == st->codecpar->codec_id)
3466 static int extract_extradata_init(AVStream *st)
3468 AVStreamInternal *sti = st->internal;
3469 const AVBitStreamFilter *f;
3472 f = av_bsf_get_by_name("extract_extradata");
3476 /* check that the codec id is supported */
3477 ret = extract_extradata_check(st);
3481 sti->extract_extradata.pkt = av_packet_alloc();
3482 if (!sti->extract_extradata.pkt)
3483 return AVERROR(ENOMEM);
3485 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3489 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3494 sti->extract_extradata.bsf->time_base_in = st->time_base;
3496 ret = av_bsf_init(sti->extract_extradata.bsf);
3501 sti->extract_extradata.inited = 1;
3505 av_bsf_free(&sti->extract_extradata.bsf);
3506 av_packet_free(&sti->extract_extradata.pkt);
3510 static int extract_extradata(AVStream *st, AVPacket *pkt)
3512 AVStreamInternal *sti = st->internal;
3516 if (!sti->extract_extradata.inited) {
3517 ret = extract_extradata_init(st);
3522 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3525 pkt_ref = sti->extract_extradata.pkt;
3526 ret = av_packet_ref(pkt_ref, pkt);
3530 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3532 av_packet_unref(pkt_ref);
3536 while (ret >= 0 && !sti->avctx->extradata) {
3540 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3542 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3547 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3551 av_assert0(!sti->avctx->extradata);
3552 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3553 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3554 if (!sti->avctx->extradata) {
3555 av_packet_unref(pkt_ref);
3556 return AVERROR(ENOMEM);
3558 memcpy(sti->avctx->extradata, extradata, extradata_size);
3559 sti->avctx->extradata_size = extradata_size;
3561 av_packet_unref(pkt_ref);
3567 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3569 int i, count = 0, ret = 0, j;
3572 AVCodecContext *avctx;
3573 AVPacket pkt1, *pkt;
3574 int64_t old_offset = avio_tell(ic->pb);
3575 // new streams might appear, no options for those
3576 int orig_nb_streams = ic->nb_streams;
3578 int64_t max_analyze_duration = ic->max_analyze_duration;
3579 int64_t max_stream_analyze_duration;
3580 int64_t max_subtitle_analyze_duration;
3581 int64_t probesize = ic->probesize;
3582 int eof_reached = 0;
3583 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3585 flush_codecs = probesize > 0;
3587 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3589 max_stream_analyze_duration = max_analyze_duration;
3590 max_subtitle_analyze_duration = max_analyze_duration;
3591 if (!max_analyze_duration) {
3592 max_stream_analyze_duration =
3593 max_analyze_duration = 5*AV_TIME_BASE;
3594 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3595 if (!strcmp(ic->iformat->name, "flv"))
3596 max_stream_analyze_duration = 90*AV_TIME_BASE;
3597 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3598 max_stream_analyze_duration = 7*AV_TIME_BASE;
3602 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3603 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3605 for (i = 0; i < ic->nb_streams; i++) {
3606 const AVCodec *codec;
3607 AVDictionary *thread_opt = NULL;
3608 st = ic->streams[i];
3609 avctx = st->internal->avctx;
3611 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3612 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3613 /* if (!st->time_base.num)
3615 if (!avctx->time_base.num)
3616 avctx->time_base = st->time_base;
3619 /* check if the caller has overridden the codec id */
3620 #if FF_API_LAVF_AVCTX
3621 FF_DISABLE_DEPRECATION_WARNINGS
3622 if (st->codec->codec_id != st->internal->orig_codec_id) {
3623 st->codecpar->codec_id = st->codec->codec_id;
3624 st->codecpar->codec_type = st->codec->codec_type;
3625 st->internal->orig_codec_id = st->codec->codec_id;
3627 FF_ENABLE_DEPRECATION_WARNINGS
3629 // only for the split stuff
3630 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3631 st->parser = av_parser_init(st->codecpar->codec_id);
3633 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3634 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3635 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3636 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3638 } else if (st->need_parsing) {
3639 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3640 "%s, packets or times may be invalid.\n",
3641 avcodec_get_name(st->codecpar->codec_id));
3645 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3646 st->internal->orig_codec_id = st->codecpar->codec_id;
3648 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3650 goto find_stream_info_err;
3651 if (st->request_probe <= 0)
3652 st->internal->avctx_inited = 1;
3654 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3656 /* Force thread count to 1 since the H.264 decoder will not extract
3657 * SPS and PPS to extradata during multi-threaded decoding. */
3658 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3660 if (ic->codec_whitelist)
3661 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3663 /* Ensure that subtitle_header is properly set. */
3664 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3665 && codec && !avctx->codec) {
3666 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3667 av_log(ic, AV_LOG_WARNING,
3668 "Failed to open codec in %s\n",__FUNCTION__);
3671 // Try to just open decoders, in case this is enough to get parameters.
3672 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3673 if (codec && !avctx->codec)
3674 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3675 av_log(ic, AV_LOG_WARNING,
3676 "Failed to open codec in %s\n",__FUNCTION__);
3679 av_dict_free(&thread_opt);
3682 for (i = 0; i < ic->nb_streams; i++) {
3683 #if FF_API_R_FRAME_RATE
3684 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3686 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3687 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3692 int analyzed_all_streams;
3693 if (ff_check_interrupt(&ic->interrupt_callback)) {
3695 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3699 /* check if one codec still needs to be handled */
3700 for (i = 0; i < ic->nb_streams; i++) {
3701 int fps_analyze_framecount = 20;
3704 st = ic->streams[i];
3705 if (!has_codec_parameters(st, NULL))
3707 /* If the timebase is coarse (like the usual millisecond precision
3708 * of mkv), we need to analyze more frames to reliably arrive at
3709 * the correct fps. */
3710 if (av_q2d(st->time_base) > 0.0005)
3711 fps_analyze_framecount *= 2;
3712 if (!tb_unreliable(st->internal->avctx))
3713 fps_analyze_framecount = 0;
3714 if (ic->fps_probe_size >= 0)
3715 fps_analyze_framecount = ic->fps_probe_size;
3716 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3717 fps_analyze_framecount = 0;
3718 /* variable fps and no guess at the real fps */
3719 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3720 st->info->codec_info_duration_fields/2 :
3721 st->info->duration_count;
3722 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3723 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3724 if (count < fps_analyze_framecount)
3727 // Look at the first 3 frames if there is evidence of frame delay
3728 // but the decoder delay is not set.
3729 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3731 if (!st->internal->avctx->extradata &&
3732 (!st->internal->extract_extradata.inited ||
3733 st->internal->extract_extradata.bsf) &&
3734 extract_extradata_check(st))
3736 if (st->first_dts == AV_NOPTS_VALUE &&
3737 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3738 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3739 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3740 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3743 analyzed_all_streams = 0;
3744 if (!missing_streams || !*missing_streams)
3745 if (i == ic->nb_streams) {
3746 analyzed_all_streams = 1;
3747 /* NOTE: If the format has no header, then we need to read some
3748 * packets to get most of the streams, so we cannot stop here. */
3749 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3750 /* If we found the info for all the codecs, we can stop. */
3752 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3757 /* We did not get all the codec info, but we read too much data. */
3758 if (read_size >= probesize) {
3760 av_log(ic, AV_LOG_DEBUG,
3761 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3762 for (i = 0; i < ic->nb_streams; i++)
3763 if (!ic->streams[i]->r_frame_rate.num &&
3764 ic->streams[i]->info->duration_count <= 1 &&
3765 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3766 strcmp(ic->iformat->name, "image2"))
3767 av_log(ic, AV_LOG_WARNING,
3768 "Stream #%d: not enough frames to estimate rate; "
3769 "consider increasing probesize\n", i);
3773 /* NOTE: A new stream can be added there if no header in file
3774 * (AVFMTCTX_NOHEADER). */
3775 ret = read_frame_internal(ic, &pkt1);
3776 if (ret == AVERROR(EAGAIN))
3787 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3788 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3789 &ic->internal->packet_buffer_end,
3792 goto find_stream_info_err;
3795 st = ic->streams[pkt->stream_index];
3796 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3797 read_size += pkt->size;
3799 avctx = st->internal->avctx;
3800 if (!st->internal->avctx_inited) {
3801 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3803 goto find_stream_info_err;
3804 st->internal->avctx_inited = 1;
3807 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3808 /* check for non-increasing dts */
3809 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3810 st->info->fps_last_dts >= pkt->dts) {
3811 av_log(ic, AV_LOG_DEBUG,
3812 "Non-increasing DTS in stream %d: packet %d with DTS "
3813 "%"PRId64", packet %d with DTS %"PRId64"\n",
3814 st->index, st->info->fps_last_dts_idx,
3815 st->info->fps_last_dts, st->codec_info_nb_frames,
3817 st->info->fps_first_dts =
3818 st->info->fps_last_dts = AV_NOPTS_VALUE;
3820 /* Check for a discontinuity in dts. If the difference in dts
3821 * is more than 1000 times the average packet duration in the
3822 * sequence, we treat it as a discontinuity. */
3823 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3824 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3825 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3826 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3827 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3828 av_log(ic, AV_LOG_WARNING,
3829 "DTS discontinuity in stream %d: packet %d with DTS "
3830 "%"PRId64", packet %d with DTS %"PRId64"\n",
3831 st->index, st->info->fps_last_dts_idx,
3832 st->info->fps_last_dts, st->codec_info_nb_frames,
3834 st->info->fps_first_dts =
3835 st->info->fps_last_dts = AV_NOPTS_VALUE;
3838 /* update stored dts values */
3839 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3840 st->info->fps_first_dts = pkt->dts;
3841 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3843 st->info->fps_last_dts = pkt->dts;
3844 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3846 if (st->codec_info_nb_frames>1) {
3850 if (st->time_base.den > 0)
3851 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3852 if (st->avg_frame_rate.num > 0)
3853 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3856 && st->codec_info_nb_frames>30
3857 && st->info->fps_first_dts != AV_NOPTS_VALUE
3858 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3859 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3861 if (analyzed_all_streams) limit = max_analyze_duration;
3862 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3863 else limit = max_stream_analyze_duration;
3866 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3868 t, pkt->stream_index);
3869 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3870 av_packet_unref(pkt);
3873 if (pkt->duration) {
3874 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3875 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3877 st->info->codec_info_duration += pkt->duration;
3878 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3881 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3882 #if FF_API_R_FRAME_RATE
3883 ff_rfps_add_frame(ic, st, pkt->dts);
3885 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3886 st->info->frame_delay_evidence = 1;
3888 if (!st->internal->avctx->extradata) {
3889 ret = extract_extradata(st, pkt);
3891 goto find_stream_info_err;
3894 /* If still no information, we try to open the codec and to
3895 * decompress the frame. We try to avoid that in most cases as
3896 * it takes longer and uses more memory. For MPEG-4, we need to
3897 * decompress for QuickTime.
3899 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3900 * least one frame of codec data, this makes sure the codec initializes
3901 * the channel configuration and does not only trust the values from
3903 try_decode_frame(ic, st, pkt,
3904 (options && i < orig_nb_streams) ? &options[i] : NULL);
3906 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3907 av_packet_unref(pkt);
3909 st->codec_info_nb_frames++;
3915 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3916 st = ic->streams[stream_index];
3917 avctx = st->internal->avctx;
3918 if (!has_codec_parameters(st, NULL)) {
3919 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3920 if (codec && !avctx->codec) {
3921 AVDictionary *opts = NULL;
3922 if (ic->codec_whitelist)
3923 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3924 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3925 av_log(ic, AV_LOG_WARNING,
3926 "Failed to open codec in %s\n",__FUNCTION__);
3927 av_dict_free(&opts);
3931 // EOF already reached while reading the stream above.
3932 // So continue with reoordering DTS with whatever delay we have.
3933 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3934 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3940 AVPacket empty_pkt = { 0 };
3942 av_init_packet(&empty_pkt);
3944 for (i = 0; i < ic->nb_streams; i++) {
3946 st = ic->streams[i];
3948 /* flush the decoders */
3949 if (st->info->found_decoder == 1) {
3951 err = try_decode_frame(ic, st, &empty_pkt,
3952 (options && i < orig_nb_streams)
3953 ? &options[i] : NULL);
3954 } while (err > 0 && !has_codec_parameters(st, NULL));
3957 av_log(ic, AV_LOG_INFO,
3958 "decoding for stream %d failed\n", st->index);
3964 ff_rfps_calculate(ic);
3966 for (i = 0; i < ic->nb_streams; i++) {
3967 st = ic->streams[i];
3968 avctx = st->internal->avctx;
3969 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3970 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3971 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3972 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3973 avctx->codec_tag= tag;
3976 /* estimate average framerate if not set by demuxer */
3977 if (st->info->codec_info_duration_fields &&
3978 !st->avg_frame_rate.num &&
3979 st->info->codec_info_duration) {
3981 double best_error = 0.01;
3982 AVRational codec_frame_rate = avctx->framerate;
3984 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3985 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3986 st->info->codec_info_duration < 0)
3988 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3989 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3990 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3992 /* Round guessed framerate to a "standard" framerate if it's
3993 * within 1% of the original estimate. */
3994 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3995 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3996 double error = fabs(av_q2d(st->avg_frame_rate) /
3997 av_q2d(std_fps) - 1);
3999 if (error < best_error) {
4001 best_fps = std_fps.num;
4004 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4005 error = fabs(av_q2d(codec_frame_rate) /
4006 av_q2d(std_fps) - 1);
4007 if (error < best_error) {
4009 best_fps = std_fps.num;
4014 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4015 best_fps, 12 * 1001, INT_MAX);
4018 if (!st->r_frame_rate.num) {
4019 if ( avctx->time_base.den * (int64_t) st->time_base.num
4020 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4021 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4022 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4024 st->r_frame_rate.num = st->time_base.den;
4025 st->r_frame_rate.den = st->time_base.num;
4028 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4029 AVRational hw_ratio = { avctx->height, avctx->width };
4030 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4033 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4034 if (!avctx->bits_per_coded_sample)
4035 avctx->bits_per_coded_sample =
4036 av_get_bits_per_sample(avctx->codec_id);
4037 // set stream disposition based on audio service type
4038 switch (avctx->audio_service_type) {
4039 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4040 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4042 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4043 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4045 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4046 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4048 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4049 st->disposition = AV_DISPOSITION_COMMENT;
4051 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4052 st->disposition = AV_DISPOSITION_KARAOKE;
4059 estimate_timings(ic, old_offset);
4061 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4063 if (ret >= 0 && ic->nb_streams)
4064 /* We could not have all the codec parameters before EOF. */
4066 for (i = 0; i < ic->nb_streams; i++) {
4068 st = ic->streams[i];
4070 /* if no packet was ever seen, update context now for has_codec_parameters */
4071 if (!st->internal->avctx_inited) {
4072 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4073 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4074 st->codecpar->format = st->internal->avctx->sample_fmt;
4075 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4077 goto find_stream_info_err;
4079 if (!has_codec_parameters(st, &errmsg)) {
4081 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4082 av_log(ic, AV_LOG_WARNING,
4083 "Could not find codec parameters for stream %d (%s): %s\n"
4084 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4091 compute_chapters_end(ic);
4093 /* update the stream parameters from the internal codec contexts */
4094 for (i = 0; i < ic->nb_streams; i++) {
4095 st = ic->streams[i];
4097 if (st->internal->avctx_inited) {
4098 int orig_w = st->codecpar->width;
4099 int orig_h = st->codecpar->height;
4100 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4102 goto find_stream_info_err;
4104 // The decoder might reduce the video size by the lowres factor.
4105 if (st->internal->avctx->lowres && orig_w) {
4106 st->codecpar->width = orig_w;
4107 st->codecpar->height = orig_h;
4112 #if FF_API_LAVF_AVCTX
4113 FF_DISABLE_DEPRECATION_WARNINGS
4114 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4116 goto find_stream_info_err;
4119 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4120 // by the lowres factor.
4121 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4122 st->codec->lowres = st->internal->avctx->lowres;
4123 st->codec->width = st->internal->avctx->width;
4124 st->codec->height = st->internal->avctx->height;
4128 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4129 st->codec->time_base = st->internal->avctx->time_base;
4130 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4132 st->codec->framerate = st->avg_frame_rate;
4134 if (st->internal->avctx->subtitle_header) {
4135 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4136 if (!st->codec->subtitle_header)
4137 goto find_stream_info_err;
4138 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4139 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4140 st->codec->subtitle_header_size);
4143 // Fields unavailable in AVCodecParameters
4144 st->codec->coded_width = st->internal->avctx->coded_width;
4145 st->codec->coded_height = st->internal->avctx->coded_height;
4146 st->codec->properties = st->internal->avctx->properties;
4147 FF_ENABLE_DEPRECATION_WARNINGS
4150 st->internal->avctx_inited = 0;
4153 find_stream_info_err:
4154 for (i = 0; i < ic->nb_streams; i++) {
4155 st = ic->streams[i];
4157 av_freep(&st->info->duration_error);
4158 avcodec_close(ic->streams[i]->internal->avctx);
4159 av_freep(&ic->streams[i]->info);
4160 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4161 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4164 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4165 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4169 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4173 for (i = 0; i < ic->nb_programs; i++) {
4174 if (ic->programs[i] == last) {
4178 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4179 if (ic->programs[i]->stream_index[j] == s)
4180 return ic->programs[i];
4186 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4187 int wanted_stream_nb, int related_stream,
4188 AVCodec **decoder_ret, int flags)
4190 int i, nb_streams = ic->nb_streams;
4191 int ret = AVERROR_STREAM_NOT_FOUND;
4192 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4193 int count, multiframe, disposition;
4194 int64_t best_bitrate = -1;
4196 unsigned *program = NULL;
4197 const AVCodec *decoder = NULL, *best_decoder = NULL;
4199 if (related_stream >= 0 && wanted_stream_nb < 0) {
4200 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4202 program = p->stream_index;
4203 nb_streams = p->nb_stream_indexes;
4206 for (i = 0; i < nb_streams; i++) {
4207 int real_stream_index = program ? program[i] : i;
4208 AVStream *st = ic->streams[real_stream_index];
4209 AVCodecParameters *par = st->codecpar;
4210 if (par->codec_type != type)
4212 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4214 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4217 decoder = find_decoder(ic, st, par->codec_id);
4220 ret = AVERROR_DECODER_NOT_FOUND;
4224 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4225 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4226 count = st->codec_info_nb_frames;
4227 bitrate = par->bit_rate;
4228 multiframe = FFMIN(5, count);
4229 if ((best_disposition > disposition) ||
4230 (best_disposition == disposition && best_multiframe > multiframe) ||
4231 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4232 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4234 best_disposition = disposition;
4236 best_bitrate = bitrate;
4237 best_multiframe = multiframe;
4238 ret = real_stream_index;
4239 best_decoder = decoder;
4240 if (program && i == nb_streams - 1 && ret < 0) {
4242 nb_streams = ic->nb_streams;
4243 /* no related stream found, try again with everything */
4248 *decoder_ret = (AVCodec*)best_decoder;
4252 /*******************************************************/
4254 int av_read_play(AVFormatContext *s)
4256 if (s->iformat->read_play)
4257 return s->iformat->read_play(s);
4259 return avio_pause(s->pb, 0);
4260 return AVERROR(ENOSYS);
4263 int av_read_pause(AVFormatContext *s)
4265 if (s->iformat->read_pause)
4266 return s->iformat->read_pause(s);
4268 return avio_pause(s->pb, 1);
4269 return AVERROR(ENOSYS);
4272 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4277 dst->time_base = src->time_base;
4278 dst->nb_frames = src->nb_frames;
4279 dst->disposition = src->disposition;
4280 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4281 dst->avg_frame_rate = src->avg_frame_rate;
4282 dst->r_frame_rate = src->r_frame_rate;
4284 av_dict_free(&dst->metadata);
4285 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4289 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4293 /* Free existing side data*/
4294 for (i = 0; i < dst->nb_side_data; i++)
4295 av_free(dst->side_data[i].data);
4296 av_freep(&dst->side_data);
4297 dst->nb_side_data = 0;
4299 /* Copy side data if present */
4300 if (src->nb_side_data) {
4301 dst->side_data = av_mallocz_array(src->nb_side_data,
4302 sizeof(AVPacketSideData));
4303 if (!dst->side_data)
4304 return AVERROR(ENOMEM);
4305 dst->nb_side_data = src->nb_side_data;
4307 for (i = 0; i < src->nb_side_data; i++) {
4308 uint8_t *data = av_memdup(src->side_data[i].data,
4309 src->side_data[i].size);
4311 return AVERROR(ENOMEM);
4312 dst->side_data[i].type = src->side_data[i].type;
4313 dst->side_data[i].size = src->side_data[i].size;
4314 dst->side_data[i].data = data;
4318 #if FF_API_LAVF_FFSERVER
4319 FF_DISABLE_DEPRECATION_WARNINGS
4320 av_freep(&dst->recommended_encoder_configuration);
4321 if (src->recommended_encoder_configuration) {
4322 const char *conf_str = src->recommended_encoder_configuration;
4323 dst->recommended_encoder_configuration = av_strdup(conf_str);
4324 if (!dst->recommended_encoder_configuration)
4325 return AVERROR(ENOMEM);
4327 FF_ENABLE_DEPRECATION_WARNINGS
4333 static void free_stream(AVStream **pst)
4335 AVStream *st = *pst;
4341 for (i = 0; i < st->nb_side_data; i++)
4342 av_freep(&st->side_data[i].data);
4343 av_freep(&st->side_data);
4346 av_parser_close(st->parser);
4348 if (st->attached_pic.data)
4349 av_packet_unref(&st->attached_pic);
4352 avcodec_free_context(&st->internal->avctx);
4353 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4354 av_bsf_free(&st->internal->bsfcs[i]);
4355 av_freep(&st->internal->bsfcs);
4357 av_freep(&st->internal->priv_pts);
4358 av_bsf_free(&st->internal->extract_extradata.bsf);
4359 av_packet_free(&st->internal->extract_extradata.pkt);
4361 av_freep(&st->internal);
4363 av_dict_free(&st->metadata);
4364 avcodec_parameters_free(&st->codecpar);
4365 av_freep(&st->probe_data.buf);
4366 av_freep(&st->index_entries);
4367 #if FF_API_LAVF_AVCTX
4368 FF_DISABLE_DEPRECATION_WARNINGS
4369 avcodec_free_context(&st->codec);
4370 FF_ENABLE_DEPRECATION_WARNINGS
4372 av_freep(&st->priv_data);
4374 av_freep(&st->info->duration_error);
4375 av_freep(&st->info);
4376 #if FF_API_LAVF_FFSERVER
4377 FF_DISABLE_DEPRECATION_WARNINGS
4378 av_freep(&st->recommended_encoder_configuration);
4379 FF_ENABLE_DEPRECATION_WARNINGS
4385 void ff_free_stream(AVFormatContext *s, AVStream *st)
4387 av_assert0(s->nb_streams>0);
4388 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4390 free_stream(&s->streams[ --s->nb_streams ]);
4393 void avformat_free_context(AVFormatContext *s)
4401 if (s->iformat && s->iformat->priv_class && s->priv_data)
4402 av_opt_free(s->priv_data);
4403 if (s->oformat && s->oformat->priv_class && s->priv_data)
4404 av_opt_free(s->priv_data);
4406 for (i = s->nb_streams - 1; i >= 0; i--)
4407 ff_free_stream(s, s->streams[i]);
4410 for (i = s->nb_programs - 1; i >= 0; i--) {
4411 av_dict_free(&s->programs[i]->metadata);
4412 av_freep(&s->programs[i]->stream_index);
4413 av_freep(&s->programs[i]);
4415 av_freep(&s->programs);
4416 av_freep(&s->priv_data);
4417 while (s->nb_chapters--) {
4418 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4419 av_freep(&s->chapters[s->nb_chapters]);
4421 av_freep(&s->chapters);
4422 av_dict_free(&s->metadata);
4423 av_dict_free(&s->internal->id3v2_meta);
4424 av_freep(&s->streams);
4425 flush_packet_queue(s);
4426 av_freep(&s->internal);
4431 void avformat_close_input(AVFormatContext **ps)
4442 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4443 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4446 flush_packet_queue(s);
4449 if (s->iformat->read_close)
4450 s->iformat->read_close(s);
4452 avformat_free_context(s);
4459 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4465 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4466 if (s->max_streams < INT_MAX/sizeof(*streams))
4467 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);
4470 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4473 s->streams = streams;
4475 st = av_mallocz(sizeof(AVStream));
4478 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4482 st->info->last_dts = AV_NOPTS_VALUE;
4484 #if FF_API_LAVF_AVCTX
4485 FF_DISABLE_DEPRECATION_WARNINGS
4486 st->codec = avcodec_alloc_context3(c);
4492 FF_ENABLE_DEPRECATION_WARNINGS
4495 st->internal = av_mallocz(sizeof(*st->internal));
4499 st->codecpar = avcodec_parameters_alloc();
4503 st->internal->avctx = avcodec_alloc_context3(NULL);
4504 if (!st->internal->avctx)
4508 #if FF_API_LAVF_AVCTX
4509 FF_DISABLE_DEPRECATION_WARNINGS
4510 /* no default bitrate if decoding */
4511 st->codec->bit_rate = 0;
4512 FF_ENABLE_DEPRECATION_WARNINGS
4515 /* default pts setting is MPEG-like */
4516 avpriv_set_pts_info(st, 33, 1, 90000);
4517 /* we set the current DTS to 0 so that formats without any timestamps
4518 * but durations get some timestamps, formats with some unknown
4519 * timestamps have their first few packets buffered and the
4520 * timestamps corrected before they are returned to the user */
4521 st->cur_dts = RELATIVE_TS_BASE;
4523 st->cur_dts = AV_NOPTS_VALUE;
4526 st->index = s->nb_streams;
4527 st->start_time = AV_NOPTS_VALUE;
4528 st->duration = AV_NOPTS_VALUE;
4529 st->first_dts = AV_NOPTS_VALUE;
4530 st->probe_packets = MAX_PROBE_PACKETS;
4531 st->pts_wrap_reference = AV_NOPTS_VALUE;
4532 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4534 st->last_IP_pts = AV_NOPTS_VALUE;
4535 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4536 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4537 st->pts_buffer[i] = AV_NOPTS_VALUE;
4539 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4541 #if FF_API_R_FRAME_RATE
4542 st->info->last_dts = AV_NOPTS_VALUE;
4544 st->info->fps_first_dts = AV_NOPTS_VALUE;
4545 st->info->fps_last_dts = AV_NOPTS_VALUE;
4547 st->inject_global_side_data = s->internal->inject_global_side_data;
4549 st->internal->need_context_update = 1;
4551 s->streams[s->nb_streams++] = st;
4558 AVProgram *av_new_program(AVFormatContext *ac, int id)
4560 AVProgram *program = NULL;
4563 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4565 for (i = 0; i < ac->nb_programs; i++)
4566 if (ac->programs[i]->id == id)
4567 program = ac->programs[i];
4570 program = av_mallocz(sizeof(AVProgram));
4573 dynarray_add(&ac->programs, &ac->nb_programs, program);
4574 program->discard = AVDISCARD_NONE;
4575 program->pmt_version = -1;
4578 program->pts_wrap_reference = AV_NOPTS_VALUE;
4579 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4581 program->start_time =
4582 program->end_time = AV_NOPTS_VALUE;
4587 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4588 int64_t start, int64_t end, const char *title)
4590 AVChapter *chapter = NULL;
4593 if (end != AV_NOPTS_VALUE && start > end) {
4594 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4598 for (i = 0; i < s->nb_chapters; i++)
4599 if (s->chapters[i]->id == id)
4600 chapter = s->chapters[i];
4603 chapter = av_mallocz(sizeof(AVChapter));
4606 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4608 av_dict_set(&chapter->metadata, "title", title, 0);
4610 chapter->time_base = time_base;
4611 chapter->start = start;
4617 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4620 AVProgram *program = NULL;
4623 if (idx >= ac->nb_streams) {
4624 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4628 for (i = 0; i < ac->nb_programs; i++) {
4629 if (ac->programs[i]->id != progid)
4631 program = ac->programs[i];
4632 for (j = 0; j < program->nb_stream_indexes; j++)
4633 if (program->stream_index[j] == idx)
4636 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4639 program->stream_index = tmp;
4640 program->stream_index[program->nb_stream_indexes++] = idx;
4645 uint64_t ff_ntp_time(void)
4647 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4650 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4652 uint64_t ntp_ts, frac_part, sec;
4655 //current ntp time in seconds and micro seconds
4656 sec = ntp_time_us / 1000000;
4657 usec = ntp_time_us % 1000000;
4659 //encoding in ntp timestamp format
4660 frac_part = usec * 0xFFFFFFFFULL;
4661 frac_part /= 1000000;
4663 if (sec > 0xFFFFFFFFULL)
4664 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4667 ntp_ts |= frac_part;
4672 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4675 char *q, buf1[20], c;
4676 int nd, len, percentd_found;
4688 while (av_isdigit(*p))
4689 nd = nd * 10 + *p++ - '0';
4691 } while (av_isdigit(c));
4697 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4702 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4704 if ((q - buf + len) > buf_size - 1)
4706 memcpy(q, buf1, len);
4714 if ((q - buf) < buf_size - 1)
4718 if (!percentd_found)
4727 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4729 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4732 void av_url_split(char *proto, int proto_size,
4733 char *authorization, int authorization_size,
4734 char *hostname, int hostname_size,
4735 int *port_ptr, char *path, int path_size, const char *url)
4737 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4743 if (authorization_size > 0)
4744 authorization[0] = 0;
4745 if (hostname_size > 0)
4750 /* parse protocol */
4751 if ((p = strchr(url, ':'))) {
4752 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4759 /* no protocol means plain filename */
4760 av_strlcpy(path, url, path_size);
4764 /* separate path from hostname */
4765 ls = strchr(p, '/');
4766 ls2 = strchr(p, '?');
4770 ls = FFMIN(ls, ls2);
4772 av_strlcpy(path, ls, path_size);
4774 ls = &p[strlen(p)]; // XXX
4776 /* the rest is hostname, use that to parse auth/port */
4778 /* authorization (user[:pass]@hostname) */
4780 while ((at = strchr(p, '@')) && at < ls) {
4781 av_strlcpy(authorization, at2,
4782 FFMIN(authorization_size, at + 1 - at2));
4783 p = at + 1; /* skip '@' */
4786 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4788 av_strlcpy(hostname, p + 1,
4789 FFMIN(hostname_size, brk - p));
4790 if (brk[1] == ':' && port_ptr)
4791 *port_ptr = atoi(brk + 2);
4792 } else if ((col = strchr(p, ':')) && col < ls) {
4793 av_strlcpy(hostname, p,
4794 FFMIN(col + 1 - p, hostname_size));
4796 *port_ptr = atoi(col + 1);
4798 av_strlcpy(hostname, p,
4799 FFMIN(ls + 1 - p, hostname_size));
4803 int ff_mkdir_p(const char *path)
4806 char *temp = av_strdup(path);
4810 if (!path || !temp) {
4814 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4816 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4820 for ( ; *pos != '\0'; ++pos) {
4821 if (*pos == '/' || *pos == '\\') {
4824 ret = mkdir(temp, 0755);
4829 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4830 ret = mkdir(temp, 0755);
4837 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4840 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4843 'C', 'D', 'E', 'F' };
4844 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4847 'c', 'd', 'e', 'f' };
4848 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4850 for (i = 0; i < s; i++) {
4851 buff[i * 2] = hex_table[src[i] >> 4];
4852 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4858 int ff_hex_to_data(uint8_t *data, const char *p)
4865 p += strspn(p, SPACE_CHARS);
4868 c = av_toupper((unsigned char) *p++);
4869 if (c >= '0' && c <= '9')
4871 else if (c >= 'A' && c <= 'F')
4886 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4887 unsigned int pts_num, unsigned int pts_den)
4890 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4891 if (new_tb.num != pts_num)
4892 av_log(NULL, AV_LOG_DEBUG,
4893 "st:%d removing common factor %d from timebase\n",
4894 s->index, pts_num / new_tb.num);
4896 av_log(NULL, AV_LOG_WARNING,
4897 "st:%d has too large timebase, reducing\n", s->index);
4899 if (new_tb.num <= 0 || new_tb.den <= 0) {
4900 av_log(NULL, AV_LOG_ERROR,
4901 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4902 new_tb.num, new_tb.den,
4906 s->time_base = new_tb;
4907 #if FF_API_LAVF_AVCTX
4908 FF_DISABLE_DEPRECATION_WARNINGS
4909 s->codec->pkt_timebase = new_tb;
4910 FF_ENABLE_DEPRECATION_WARNINGS
4912 s->internal->avctx->pkt_timebase = new_tb;
4913 s->pts_wrap_bits = pts_wrap_bits;
4916 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4919 const char *ptr = str;
4921 /* Parse key=value pairs. */
4924 char *dest = NULL, *dest_end;
4925 int key_len, dest_len = 0;
4927 /* Skip whitespace and potential commas. */
4928 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4935 if (!(ptr = strchr(key, '=')))
4938 key_len = ptr - key;
4940 callback_get_buf(context, key, key_len, &dest, &dest_len);
4941 dest_end = dest + dest_len - 1;
4945 while (*ptr && *ptr != '\"') {
4949 if (dest && dest < dest_end)
4953 if (dest && dest < dest_end)
4961 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4962 if (dest && dest < dest_end)
4970 int ff_find_stream_index(AVFormatContext *s, int id)
4973 for (i = 0; i < s->nb_streams; i++)
4974 if (s->streams[i]->id == id)
4979 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4983 unsigned int codec_tag;
4984 if (ofmt->query_codec)
4985 return ofmt->query_codec(codec_id, std_compliance);
4986 else if (ofmt->codec_tag)
4987 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4988 else if (codec_id == ofmt->video_codec ||
4989 codec_id == ofmt->audio_codec ||
4990 codec_id == ofmt->subtitle_codec ||
4991 codec_id == ofmt->data_codec)
4994 return AVERROR_PATCHWELCOME;
4997 int avformat_network_init(void)
5001 if ((ret = ff_network_init()) < 0)
5003 if ((ret = ff_tls_init()) < 0)
5009 int avformat_network_deinit(void)
5018 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5019 uint64_t channel_layout, int32_t sample_rate,
5020 int32_t width, int32_t height)
5026 return AVERROR(EINVAL);
5029 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5031 if (channel_layout) {
5033 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5037 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5039 if (width || height) {
5041 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5043 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5045 return AVERROR(ENOMEM);
5046 bytestream_put_le32(&data, flags);
5048 bytestream_put_le32(&data, channels);
5050 bytestream_put_le64(&data, channel_layout);
5052 bytestream_put_le32(&data, sample_rate);
5053 if (width || height) {
5054 bytestream_put_le32(&data, width);
5055 bytestream_put_le32(&data, height);
5060 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5062 AVRational undef = {0, 1};
5063 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5064 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5065 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5067 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5068 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5069 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5070 stream_sample_aspect_ratio = undef;
5072 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5073 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5074 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5075 frame_sample_aspect_ratio = undef;
5077 if (stream_sample_aspect_ratio.num)
5078 return stream_sample_aspect_ratio;
5080 return frame_sample_aspect_ratio;
5083 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5085 AVRational fr = st->r_frame_rate;
5086 AVRational codec_fr = st->internal->avctx->framerate;
5087 AVRational avg_fr = st->avg_frame_rate;
5089 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5090 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5095 if (st->internal->avctx->ticks_per_frame > 1) {
5096 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5097 (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))
5105 * Matches a stream specifier (but ignores requested index).
5107 * @param indexptr set to point to the requested stream index if there is one
5109 * @return <0 on error
5110 * 0 if st is NOT a matching stream
5111 * >0 if st is a matching stream
5113 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5114 const char *spec, const char **indexptr, AVProgram **p)
5116 int match = 1; /* Stores if the specifier matches so far. */
5118 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5122 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5123 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5124 enum AVMediaType type;
5128 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5129 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5130 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5131 case 'd': type = AVMEDIA_TYPE_DATA; break;
5132 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5133 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5134 default: av_assert0(0);
5136 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5137 return AVERROR(EINVAL);
5139 #if FF_API_LAVF_AVCTX
5140 FF_DISABLE_DEPRECATION_WARNINGS
5141 if (type != st->codecpar->codec_type
5142 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5144 FF_ENABLE_DEPRECATION_WARNINGS
5146 if (type != st->codecpar->codec_type)
5149 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5151 } else if (*spec == 'p' && *(spec + 1) == ':') {
5156 prog_id = strtol(spec, &endptr, 0);
5157 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5158 if (spec == endptr || (*endptr && *endptr++ != ':'))
5159 return AVERROR(EINVAL);
5162 for (i = 0; i < s->nb_programs; i++) {
5163 if (s->programs[i]->id != prog_id)
5166 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5167 if (st->index == s->programs[i]->stream_index[j]) {
5170 *p = s->programs[i];
5179 } else if (*spec == '#' ||
5180 (*spec == 'i' && *(spec + 1) == ':')) {
5183 spec += 1 + (*spec == 'i');
5184 stream_id = strtol(spec, &endptr, 0);
5185 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5186 return AVERROR(EINVAL);
5187 return match && (stream_id == st->id);
5188 } else if (*spec == 'm' && *(spec + 1) == ':') {
5189 AVDictionaryEntry *tag;
5195 val = strchr(spec, ':');
5197 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5199 return AVERROR(ENOMEM);
5201 tag = av_dict_get(st->metadata, key, NULL, 0);
5203 if (!val || !strcmp(tag->value, val + 1))
5212 return match && ret;
5213 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5214 AVCodecParameters *par = st->codecpar;
5215 #if FF_API_LAVF_AVCTX
5216 FF_DISABLE_DEPRECATION_WARNINGS
5217 AVCodecContext *codec = st->codec;
5218 FF_ENABLE_DEPRECATION_WARNINGS
5221 switch (par->codec_type) {
5222 case AVMEDIA_TYPE_AUDIO:
5223 val = par->sample_rate && par->channels;
5224 #if FF_API_LAVF_AVCTX
5225 val = val || (codec->sample_rate && codec->channels);
5227 if (par->format == AV_SAMPLE_FMT_NONE
5228 #if FF_API_LAVF_AVCTX
5229 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5234 case AVMEDIA_TYPE_VIDEO:
5235 val = par->width && par->height;
5236 #if FF_API_LAVF_AVCTX
5237 val = val || (codec->width && codec->height);
5239 if (par->format == AV_PIX_FMT_NONE
5240 #if FF_API_LAVF_AVCTX
5241 && codec->pix_fmt == AV_PIX_FMT_NONE
5246 case AVMEDIA_TYPE_UNKNOWN:
5253 #if FF_API_LAVF_AVCTX
5254 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5256 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5259 return AVERROR(EINVAL);
5267 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5272 const char *indexptr = NULL;
5273 AVProgram *p = NULL;
5276 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5283 index = strtol(indexptr, &endptr, 0);
5284 if (*endptr) { /* We can't have anything after the requested index. */
5285 ret = AVERROR(EINVAL);
5289 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5290 if (spec == indexptr)
5291 return (index == st->index);
5293 /* If we requested a matching stream index, we have to ensure st is that. */
5294 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5295 for (int i = 0; i < nb_streams && index >= 0; i++) {
5296 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5297 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5300 if (ret > 0 && index-- == 0 && st == candidate)
5306 if (ret == AVERROR(EINVAL))
5307 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5311 int ff_generate_avci_extradata(AVStream *st)
5313 static const uint8_t avci100_1080p_extradata[] = {
5315 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5316 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5317 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5318 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5319 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5320 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5321 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5322 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5323 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5325 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5328 static const uint8_t avci100_1080i_extradata[] = {
5330 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5331 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5332 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5333 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5334 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5335 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5336 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5337 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5338 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5339 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5340 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5342 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5345 static const uint8_t avci50_1080p_extradata[] = {
5347 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5348 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5349 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5350 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5351 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5352 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5353 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5354 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5355 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5357 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5360 static const uint8_t avci50_1080i_extradata[] = {
5362 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5363 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5364 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5365 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5366 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5367 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5368 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5369 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5370 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5371 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5372 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5374 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5377 static const uint8_t avci100_720p_extradata[] = {
5379 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5380 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5381 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5382 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5383 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5384 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5385 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5386 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5387 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5388 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5390 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5393 static const uint8_t avci50_720p_extradata[] = {
5395 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5396 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5397 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5398 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5399 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5400 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5401 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5402 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5403 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5405 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5409 const uint8_t *data = NULL;
5412 if (st->codecpar->width == 1920) {
5413 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5414 data = avci100_1080p_extradata;
5415 size = sizeof(avci100_1080p_extradata);
5417 data = avci100_1080i_extradata;
5418 size = sizeof(avci100_1080i_extradata);
5420 } else if (st->codecpar->width == 1440) {
5421 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5422 data = avci50_1080p_extradata;
5423 size = sizeof(avci50_1080p_extradata);
5425 data = avci50_1080i_extradata;
5426 size = sizeof(avci50_1080i_extradata);
5428 } else if (st->codecpar->width == 1280) {
5429 data = avci100_720p_extradata;
5430 size = sizeof(avci100_720p_extradata);
5431 } else if (st->codecpar->width == 960) {
5432 data = avci50_720p_extradata;
5433 size = sizeof(avci50_720p_extradata);
5439 av_freep(&st->codecpar->extradata);
5440 if (ff_alloc_extradata(st->codecpar, size))
5441 return AVERROR(ENOMEM);
5442 memcpy(st->codecpar->extradata, data, size);
5447 uint8_t *av_stream_get_side_data(const AVStream *st,
5448 enum AVPacketSideDataType type, int *size)
5452 for (i = 0; i < st->nb_side_data; i++) {
5453 if (st->side_data[i].type == type) {
5455 *size = st->side_data[i].size;
5456 return st->side_data[i].data;
5462 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5463 uint8_t *data, size_t size)
5465 AVPacketSideData *sd, *tmp;
5468 for (i = 0; i < st->nb_side_data; i++) {
5469 sd = &st->side_data[i];
5471 if (sd->type == type) {
5472 av_freep(&sd->data);
5479 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5480 return AVERROR(ERANGE);
5482 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5484 return AVERROR(ENOMEM);
5487 st->side_data = tmp;
5490 sd = &st->side_data[st->nb_side_data - 1];
5498 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5502 uint8_t *data = av_malloc(size);
5507 ret = av_stream_add_side_data(st, type, data, size);
5516 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5519 const AVBitStreamFilter *bsf;
5521 AVCodecParameters *in_par;
5523 if (!(bsf = av_bsf_get_by_name(name))) {
5524 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5525 return AVERROR_BSF_NOT_FOUND;
5528 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5531 if (st->internal->nb_bsfcs) {
5532 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5533 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5535 in_par = st->codecpar;
5536 bsfc->time_base_in = st->time_base;
5539 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5544 if (args && bsfc->filter->priv_class) {
5545 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5546 const char * shorthand[2] = {NULL};
5549 shorthand[0] = opt->name;
5551 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5557 if ((ret = av_bsf_init(bsfc)) < 0) {
5562 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5567 av_log(NULL, AV_LOG_VERBOSE,
5568 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5569 name, args ? args : "");
5574 FF_DISABLE_DEPRECATION_WARNINGS
5575 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5576 AVBitStreamFilterContext *bsfc)
5580 AVPacket new_pkt = *pkt;
5581 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5582 &new_pkt.data, &new_pkt.size,
5583 pkt->data, pkt->size,
5584 pkt->flags & AV_PKT_FLAG_KEY);
5585 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5586 av_packet_unref(pkt);
5587 memset(pkt, 0, sizeof(*pkt));
5590 if(a == 0 && new_pkt.data != pkt->data) {
5591 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
5593 memcpy(t, new_pkt.data, new_pkt.size);
5594 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5599 a = AVERROR(ENOMEM);
5603 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5604 av_buffer_default_free, NULL, 0);
5606 pkt->side_data = NULL;
5607 pkt->side_data_elems = 0;
5608 av_packet_unref(pkt);
5610 av_freep(&new_pkt.data);
5611 a = AVERROR(ENOMEM);
5615 av_log(codec, AV_LOG_ERROR,
5616 "Failed to open bitstream filter %s for stream %d with codec %s",
5617 bsfc->filter->name, pkt->stream_index,
5618 codec->codec ? codec->codec->name : "copy");
5628 FF_ENABLE_DEPRECATION_WARNINGS
5631 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5634 return AVERROR(EINVAL);
5636 if (!(s->oformat->flags & AVFMT_NOFILE))
5637 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5641 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5644 s->io_close(s, *pb);
5648 int ff_is_http_proto(char *filename) {
5649 const char *proto = avio_find_protocol_name(filename);
5650 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5653 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5655 AVDictionaryEntry *entry;
5656 int64_t parsed_timestamp;
5658 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5659 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5660 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5663 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5670 int ff_standardize_creation_time(AVFormatContext *s)
5673 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5675 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5679 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5684 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5686 if (size != AVPALETTE_SIZE) {
5687 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5688 return AVERROR_INVALIDDATA;
5690 memcpy(palette, side_data, AVPALETTE_SIZE);
5694 if (ret == CONTAINS_PAL) {
5696 for (i = 0; i < AVPALETTE_COUNT; i++)
5697 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5704 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5709 ret = av_bprint_finalize(buf, &str);
5712 if (!av_bprint_is_complete(buf)) {
5714 return AVERROR(ENOMEM);
5717 par->extradata = str;
5718 /* Note: the string is NUL terminated (so extradata can be read as a
5719 * string), but the ending character is not accounted in the size (in
5720 * binary formats you are likely not supposed to mux that character). When
5721 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5723 par->extradata_size = buf->len;
5727 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5728 AVStream *ost, const AVStream *ist,
5729 enum AVTimebaseSource copy_tb)
5731 //TODO: use [io]st->internal->avctx
5732 const AVCodecContext *dec_ctx = ist->codec;
5733 AVCodecContext *enc_ctx = ost->codec;
5735 enc_ctx->time_base = ist->time_base;
5737 * Avi is a special case here because it supports variable fps but
5738 * having the fps and timebase differe significantly adds quite some
5741 if (!strcmp(ofmt->name, "avi")) {
5742 #if FF_API_R_FRAME_RATE
5743 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5744 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5745 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5746 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5747 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5748 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5749 enc_ctx->time_base.num = ist->r_frame_rate.den;
5750 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5751 enc_ctx->ticks_per_frame = 2;
5754 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5755 && av_q2d(ist->time_base) < 1.0/500
5756 || copy_tb == AVFMT_TBCF_DECODER) {
5757 enc_ctx->time_base = dec_ctx->time_base;
5758 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5759 enc_ctx->time_base.den *= 2;
5760 enc_ctx->ticks_per_frame = 2;
5762 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5763 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5764 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5765 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5766 && av_q2d(ist->time_base) < 1.0/500
5767 || copy_tb == AVFMT_TBCF_DECODER) {
5768 enc_ctx->time_base = dec_ctx->time_base;
5769 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5773 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5774 && dec_ctx->time_base.num < dec_ctx->time_base.den
5775 && dec_ctx->time_base.num > 0
5776 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5777 enc_ctx->time_base = dec_ctx->time_base;
5780 if (ost->avg_frame_rate.num)
5781 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5783 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5784 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5789 AVRational av_stream_get_codec_timebase(const AVStream *st)
5791 // See avformat_transfer_internal_stream_timing_info() TODO.
5792 #if FF_API_LAVF_AVCTX
5793 FF_DISABLE_DEPRECATION_WARNINGS
5794 return st->codec->time_base;
5795 FF_ENABLE_DEPRECATION_WARNINGS
5797 return st->internal->avctx->time_base;
5801 void ff_format_set_url(AVFormatContext *s, char *url)
5806 #if FF_API_FORMAT_FILENAME
5807 FF_DISABLE_DEPRECATION_WARNINGS
5808 av_strlcpy(s->filename, url, sizeof(s->filename));
5809 FF_ENABLE_DEPRECATION_WARNINGS