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/time.h"
36 #include "libavutil/timestamp.h"
38 #include "libavcodec/bytestream.h"
39 #include "libavcodec/internal.h"
40 #include "libavcodec/raw.h"
42 #include "audiointerleave.h"
44 #include "avio_internal.h"
54 #include "libavutil/ffversion.h"
55 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 * various utility functions for use within FFmpeg
62 unsigned avformat_version(void)
64 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
65 return LIBAVFORMAT_VERSION_INT;
68 const char *avformat_configuration(void)
70 return FFMPEG_CONFIGURATION;
73 const char *avformat_license(void)
75 #define LICENSE_PREFIX "libavformat license: "
76 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
79 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
81 static int is_relative(int64_t ts) {
82 return ts > (RELATIVE_TS_BASE - (1LL<<48));
86 * Wrap a given time stamp, if there is an indication for an overflow
89 * @param timestamp the time stamp to wrap
90 * @return resulting time stamp
92 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
94 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
95 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
96 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
97 timestamp < st->pts_wrap_reference)
98 return timestamp + (1ULL << st->pts_wrap_bits);
99 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
100 timestamp >= st->pts_wrap_reference)
101 return timestamp - (1ULL << st->pts_wrap_bits);
106 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
107 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
108 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
109 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
110 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
111 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
112 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
113 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
114 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
115 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
117 int64_t av_stream_get_end_pts(const AVStream *st)
120 return st->priv_pts->val;
122 return AV_NOPTS_VALUE;
125 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
130 void av_format_inject_global_side_data(AVFormatContext *s)
133 s->internal->inject_global_side_data = 1;
134 for (i = 0; i < s->nb_streams; i++) {
135 AVStream *st = s->streams[i];
136 st->inject_global_side_data = 1;
140 int ff_copy_whitelists(AVFormatContext *dst, AVFormatContext *src)
142 av_assert0(!dst->codec_whitelist && !dst->format_whitelist);
143 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
144 dst->format_whitelist = av_strdup(src->format_whitelist);
145 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
146 || (src->format_whitelist && !dst->format_whitelist)) {
147 av_log(dst, AV_LOG_ERROR, "Failed to duplicate whitelist\n");
148 return AVERROR(ENOMEM);
153 static const AVCodec *find_decoder(AVFormatContext *s, AVStream *st, enum AVCodecID codec_id)
155 if (st->codec->codec)
156 return st->codec->codec;
158 switch (st->codec->codec_type) {
159 case AVMEDIA_TYPE_VIDEO:
160 if (s->video_codec) return s->video_codec;
162 case AVMEDIA_TYPE_AUDIO:
163 if (s->audio_codec) return s->audio_codec;
165 case AVMEDIA_TYPE_SUBTITLE:
166 if (s->subtitle_codec) return s->subtitle_codec;
170 return avcodec_find_decoder(codec_id);
173 int av_format_get_probe_score(const AVFormatContext *s)
175 return s->probe_score;
178 /* an arbitrarily chosen "sane" max packet size -- 50M */
179 #define SANE_CHUNK_SIZE (50000000)
181 int ffio_limit(AVIOContext *s, int size)
183 if (s->maxsize>= 0) {
184 int64_t remaining= s->maxsize - avio_tell(s);
185 if (remaining < size) {
186 int64_t newsize = avio_size(s);
187 if (!s->maxsize || s->maxsize<newsize)
188 s->maxsize = newsize - !newsize;
189 remaining= s->maxsize - avio_tell(s);
190 remaining= FFMAX(remaining, 0);
193 if (s->maxsize>= 0 && remaining+1 < size) {
194 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
201 /* Read the data in sane-sized chunks and append to pkt.
202 * Return the number of bytes read or an error. */
203 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
205 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
206 int orig_size = pkt->size;
210 int prev_size = pkt->size;
213 /* When the caller requests a lot of data, limit it to the amount
214 * left in file or SANE_CHUNK_SIZE when it is not known. */
216 if (read_size > SANE_CHUNK_SIZE/10) {
217 read_size = ffio_limit(s, read_size);
218 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
220 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
223 ret = av_grow_packet(pkt, read_size);
227 ret = avio_read(s, pkt->data + prev_size, read_size);
228 if (ret != read_size) {
229 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
236 pkt->flags |= AV_PKT_FLAG_CORRUPT;
240 av_packet_unref(pkt);
241 return pkt->size > orig_size ? pkt->size - orig_size : ret;
244 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
249 pkt->pos = avio_tell(s);
251 return append_packet_chunked(s, pkt, size);
254 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
257 return av_get_packet(s, pkt, size);
258 return append_packet_chunked(s, pkt, size);
261 int av_filename_number_test(const char *filename)
265 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
268 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
271 static const struct {
274 enum AVMediaType type;
276 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
277 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
278 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
279 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
280 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
281 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
282 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
283 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
284 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
285 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
286 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
290 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
292 if (fmt && st->request_probe <= score) {
294 av_log(s, AV_LOG_DEBUG,
295 "Probe with size=%d, packets=%d detected %s with score=%d\n",
296 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
298 for (i = 0; fmt_id_type[i].name; i++) {
299 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
300 st->codec->codec_id = fmt_id_type[i].id;
301 st->codec->codec_type = fmt_id_type[i].type;
309 /************************************************************/
310 /* input media file */
312 int av_demuxer_open(AVFormatContext *ic) {
315 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
316 av_log(ic, AV_LOG_ERROR, "Format not on whitelist\n");
317 return AVERROR(EINVAL);
320 if (ic->iformat->read_header) {
321 err = ic->iformat->read_header(ic);
326 if (ic->pb && !ic->internal->data_offset)
327 ic->internal->data_offset = avio_tell(ic->pb);
332 /* Open input file and probe the format if necessary. */
333 static int init_input(AVFormatContext *s, const char *filename,
334 AVDictionary **options)
337 AVProbeData pd = { filename, NULL, 0 };
338 int score = AVPROBE_SCORE_RETRY;
341 s->flags |= AVFMT_FLAG_CUSTOM_IO;
343 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
344 s, 0, s->format_probesize);
345 else if (s->iformat->flags & AVFMT_NOFILE)
346 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
347 "will be ignored with AVFMT_NOFILE format.\n");
351 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
352 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
355 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
356 &s->interrupt_callback, options)) < 0)
360 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
361 s, 0, s->format_probesize);
364 static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
365 AVPacketList **plast_pktl, int ref)
367 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
371 return AVERROR(ENOMEM);
374 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
383 (*plast_pktl)->next = pktl;
385 *packet_buffer = pktl;
387 /* Add the packet in the buffered packet list. */
392 int avformat_queue_attached_pictures(AVFormatContext *s)
395 for (i = 0; i < s->nb_streams; i++)
396 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
397 s->streams[i]->discard < AVDISCARD_ALL) {
398 if (s->streams[i]->attached_pic.size <= 0) {
399 av_log(s, AV_LOG_WARNING,
400 "Attached picture on stream %d has invalid size, "
405 ret = add_to_pktbuf(&s->internal->raw_packet_buffer,
406 &s->streams[i]->attached_pic,
407 &s->internal->raw_packet_buffer_end, 1);
414 int avformat_open_input(AVFormatContext **ps, const char *filename,
415 AVInputFormat *fmt, AVDictionary **options)
417 AVFormatContext *s = *ps;
419 AVDictionary *tmp = NULL;
420 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
422 if (!s && !(s = avformat_alloc_context()))
423 return AVERROR(ENOMEM);
425 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
426 return AVERROR(EINVAL);
432 av_dict_copy(&tmp, *options, 0);
434 if (s->pb) // must be before any goto fail
435 s->flags |= AVFMT_FLAG_CUSTOM_IO;
437 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
440 if ((ret = init_input(s, filename, &tmp)) < 0)
442 s->probe_score = ret;
444 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
445 av_log(s, AV_LOG_ERROR, "Format not on whitelist\n");
446 ret = AVERROR(EINVAL);
450 avio_skip(s->pb, s->skip_initial_bytes);
452 /* Check filename in case an image number is expected. */
453 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
454 if (!av_filename_number_test(filename)) {
455 ret = AVERROR(EINVAL);
460 s->duration = s->start_time = AV_NOPTS_VALUE;
461 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
463 /* Allocate private data. */
464 if (s->iformat->priv_data_size > 0) {
465 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
466 ret = AVERROR(ENOMEM);
469 if (s->iformat->priv_class) {
470 *(const AVClass **) s->priv_data = s->iformat->priv_class;
471 av_opt_set_defaults(s->priv_data);
472 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
477 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
479 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, 0);
481 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
482 if ((ret = s->iformat->read_header(s)) < 0)
485 if (id3v2_extra_meta) {
486 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
487 !strcmp(s->iformat->name, "tta")) {
488 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
491 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
493 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
495 if ((ret = avformat_queue_attached_pictures(s)) < 0)
498 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
499 s->internal->data_offset = avio_tell(s->pb);
501 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
504 av_dict_free(options);
511 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
513 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
515 avformat_free_context(s);
520 /*******************************************************/
522 static void force_codec_ids(AVFormatContext *s, AVStream *st)
524 switch (st->codec->codec_type) {
525 case AVMEDIA_TYPE_VIDEO:
526 if (s->video_codec_id)
527 st->codec->codec_id = s->video_codec_id;
529 case AVMEDIA_TYPE_AUDIO:
530 if (s->audio_codec_id)
531 st->codec->codec_id = s->audio_codec_id;
533 case AVMEDIA_TYPE_SUBTITLE:
534 if (s->subtitle_codec_id)
535 st->codec->codec_id = s->subtitle_codec_id;
540 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
542 if (st->request_probe>0) {
543 AVProbeData *pd = &st->probe_data;
545 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
549 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
551 av_log(s, AV_LOG_WARNING,
552 "Failed to reallocate probe buffer for stream %d\n",
557 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
558 pd->buf_size += pkt->size;
559 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
562 st->probe_packets = 0;
564 av_log(s, AV_LOG_WARNING,
565 "nothing to probe for stream %d\n", st->index);
569 end= s->internal->raw_packet_buffer_remaining_size <= 0
570 || st->probe_packets<= 0;
572 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
573 int score = set_codec_from_probe_data(s, st, pd);
574 if ( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
578 st->request_probe = -1;
579 if (st->codec->codec_id != AV_CODEC_ID_NONE) {
580 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
582 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
584 force_codec_ids(s, st);
590 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
592 int64_t ref = pkt->dts;
593 int i, pts_wrap_behavior;
594 int64_t pts_wrap_reference;
595 AVProgram *first_program;
597 if (ref == AV_NOPTS_VALUE)
599 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
601 ref &= (1LL << st->pts_wrap_bits)-1;
603 // reference time stamp should be 60 s before first time stamp
604 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
605 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
606 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
607 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
608 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
610 first_program = av_find_program_from_stream(s, NULL, stream_index);
612 if (!first_program) {
613 int default_stream_index = av_find_default_stream_index(s);
614 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
615 for (i = 0; i < s->nb_streams; i++) {
616 if (av_find_program_from_stream(s, NULL, i))
618 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
619 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
623 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
624 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
628 AVProgram *program = first_program;
630 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
631 pts_wrap_reference = program->pts_wrap_reference;
632 pts_wrap_behavior = program->pts_wrap_behavior;
635 program = av_find_program_from_stream(s, program, stream_index);
638 // update every program with differing pts_wrap_reference
639 program = first_program;
641 if (program->pts_wrap_reference != pts_wrap_reference) {
642 for (i = 0; i<program->nb_stream_indexes; i++) {
643 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
644 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
647 program->pts_wrap_reference = pts_wrap_reference;
648 program->pts_wrap_behavior = pts_wrap_behavior;
650 program = av_find_program_from_stream(s, program, stream_index);
656 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
662 AVPacketList *pktl = s->internal->raw_packet_buffer;
666 st = s->streams[pkt->stream_index];
667 if (s->internal->raw_packet_buffer_remaining_size <= 0)
668 if ((err = probe_codec(s, st, NULL)) < 0)
670 if (st->request_probe <= 0) {
671 s->internal->raw_packet_buffer = pktl->next;
672 s->internal->raw_packet_buffer_remaining_size += pkt->size;
681 ret = s->iformat->read_packet(s, pkt);
683 if (!pktl || ret == AVERROR(EAGAIN))
685 for (i = 0; i < s->nb_streams; i++) {
687 if (st->probe_packets)
688 if ((err = probe_codec(s, st, NULL)) < 0)
690 av_assert0(st->request_probe <= 0);
696 AVPacket tmp = { 0 };
697 ret = av_packet_ref(&tmp, pkt);
703 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
704 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
705 av_log(s, AV_LOG_WARNING,
706 "Dropped corrupted packet (stream = %d)\n",
708 av_packet_unref(pkt);
712 if (pkt->stream_index >= (unsigned)s->nb_streams) {
713 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
717 st = s->streams[pkt->stream_index];
719 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
720 // correct first time stamps to negative values
721 if (!is_relative(st->first_dts))
722 st->first_dts = wrap_timestamp(st, st->first_dts);
723 if (!is_relative(st->start_time))
724 st->start_time = wrap_timestamp(st, st->start_time);
725 if (!is_relative(st->cur_dts))
726 st->cur_dts = wrap_timestamp(st, st->cur_dts);
729 pkt->dts = wrap_timestamp(st, pkt->dts);
730 pkt->pts = wrap_timestamp(st, pkt->pts);
732 force_codec_ids(s, st);
734 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
735 if (s->use_wallclock_as_timestamps)
736 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
738 if (!pktl && st->request_probe <= 0)
741 err = add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
742 &s->internal->raw_packet_buffer_end, 0);
745 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
747 if ((err = probe_codec(s, st, pkt)) < 0)
753 /**********************************************************/
755 static int determinable_frame_size(AVCodecContext *avctx)
757 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
758 avctx->codec_id == AV_CODEC_ID_MP1 ||
759 avctx->codec_id == AV_CODEC_ID_MP2 ||
760 avctx->codec_id == AV_CODEC_ID_MP3/* ||
761 avctx->codec_id == AV_CODEC_ID_CELT*/)
767 * Return the frame duration in seconds. Return 0 if not available.
769 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
770 AVCodecParserContext *pc, AVPacket *pkt)
772 AVRational codec_framerate = s->iformat ? st->codec->framerate :
773 av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
778 switch (st->codec->codec_type) {
779 case AVMEDIA_TYPE_VIDEO:
780 if (st->r_frame_rate.num && !pc && s->iformat) {
781 *pnum = st->r_frame_rate.den;
782 *pden = st->r_frame_rate.num;
783 } else if (st->time_base.num * 1000LL > st->time_base.den) {
784 *pnum = st->time_base.num;
785 *pden = st->time_base.den;
786 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
787 av_assert0(st->codec->ticks_per_frame);
788 av_reduce(pnum, pden,
790 codec_framerate.num * (int64_t)st->codec->ticks_per_frame,
793 if (pc && pc->repeat_pict) {
794 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
795 av_reduce(pnum, pden,
796 (*pnum) * (1LL + pc->repeat_pict),
800 /* If this codec can be interlaced or progressive then we need
801 * a parser to compute duration of a packet. Thus if we have
802 * no parser in such case leave duration undefined. */
803 if (st->codec->ticks_per_frame > 1 && !pc)
807 case AVMEDIA_TYPE_AUDIO:
808 frame_size = av_get_audio_frame_duration(st->codec, pkt->size);
809 if (frame_size <= 0 || st->codec->sample_rate <= 0)
812 *pden = st->codec->sample_rate;
819 static int is_intra_only(AVCodecContext *enc) {
820 const AVCodecDescriptor *desc;
822 if (enc->codec_type != AVMEDIA_TYPE_VIDEO)
825 desc = av_codec_get_codec_descriptor(enc);
827 desc = avcodec_descriptor_get(enc->codec_id);
828 av_codec_set_codec_descriptor(enc, desc);
831 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
835 static int has_decode_delay_been_guessed(AVStream *st)
837 if (st->codec->codec_id != AV_CODEC_ID_H264) return 1;
838 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
840 #if CONFIG_H264_DECODER
841 if (st->codec->has_b_frames &&
842 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
845 if (st->codec->has_b_frames<3)
846 return st->nb_decoded_frames >= 7;
847 else if (st->codec->has_b_frames<4)
848 return st->nb_decoded_frames >= 18;
850 return st->nb_decoded_frames >= 20;
853 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
857 if (pktl == s->internal->packet_buffer_end)
858 return s->internal->parse_queue;
862 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
863 int onein_oneout = st->codec->codec_id != AV_CODEC_ID_H264 &&
864 st->codec->codec_id != AV_CODEC_ID_HEVC;
867 int delay = st->codec->has_b_frames;
870 if (dts == AV_NOPTS_VALUE) {
871 int64_t best_score = INT64_MAX;
872 for (i = 0; i<delay; i++) {
873 if (st->pts_reorder_error_count[i]) {
874 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
875 if (score < best_score) {
882 for (i = 0; i<delay; i++) {
883 if (pts_buffer[i] != AV_NOPTS_VALUE) {
884 int64_t diff = FFABS(pts_buffer[i] - dts)
885 + (uint64_t)st->pts_reorder_error[i];
886 diff = FFMAX(diff, st->pts_reorder_error[i]);
887 st->pts_reorder_error[i] = diff;
888 st->pts_reorder_error_count[i]++;
889 if (st->pts_reorder_error_count[i] > 250) {
890 st->pts_reorder_error[i] >>= 1;
891 st->pts_reorder_error_count[i] >>= 1;
898 if (dts == AV_NOPTS_VALUE)
904 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
905 int64_t dts, int64_t pts, AVPacket *pkt)
907 AVStream *st = s->streams[stream_index];
908 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
909 int64_t pts_buffer[MAX_REORDER_DELAY+1];
913 if (st->first_dts != AV_NOPTS_VALUE ||
914 dts == AV_NOPTS_VALUE ||
915 st->cur_dts == AV_NOPTS_VALUE ||
919 delay = st->codec->has_b_frames;
920 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
922 shift = st->first_dts - RELATIVE_TS_BASE;
924 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
925 pts_buffer[i] = AV_NOPTS_VALUE;
927 if (is_relative(pts))
930 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
931 if (pktl->pkt.stream_index != stream_index)
933 if (is_relative(pktl->pkt.pts))
934 pktl->pkt.pts += shift;
936 if (is_relative(pktl->pkt.dts))
937 pktl->pkt.dts += shift;
939 if (st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
940 st->start_time = pktl->pkt.pts;
942 if (pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)) {
943 pts_buffer[0] = pktl->pkt.pts;
944 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
945 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
947 pktl->pkt.dts = select_from_pts_buffer(st, pts_buffer, pktl->pkt.dts);
951 if (st->start_time == AV_NOPTS_VALUE)
952 st->start_time = pts;
955 static void update_initial_durations(AVFormatContext *s, AVStream *st,
956 int stream_index, int duration)
958 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
959 int64_t cur_dts = RELATIVE_TS_BASE;
961 if (st->first_dts != AV_NOPTS_VALUE) {
962 if (st->update_initial_durations_done)
964 st->update_initial_durations_done = 1;
965 cur_dts = st->first_dts;
966 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
967 if (pktl->pkt.stream_index == stream_index) {
968 if (pktl->pkt.pts != pktl->pkt.dts ||
969 pktl->pkt.dts != AV_NOPTS_VALUE ||
975 if (pktl && pktl->pkt.dts != st->first_dts) {
976 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
977 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
981 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
984 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
985 st->first_dts = cur_dts;
986 } else if (st->cur_dts != RELATIVE_TS_BASE)
989 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
990 if (pktl->pkt.stream_index != stream_index)
992 if (pktl->pkt.pts == pktl->pkt.dts &&
993 (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts) &&
994 !pktl->pkt.duration) {
995 pktl->pkt.dts = cur_dts;
996 if (!st->codec->has_b_frames)
997 pktl->pkt.pts = cur_dts;
998 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
999 pktl->pkt.duration = duration;
1002 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1005 st->cur_dts = cur_dts;
1008 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1009 AVCodecParserContext *pc, AVPacket *pkt,
1010 int64_t next_dts, int64_t next_pts)
1012 int num, den, presentation_delayed, delay, i;
1014 AVRational duration;
1015 int onein_oneout = st->codec->codec_id != AV_CODEC_ID_H264 &&
1016 st->codec->codec_id != AV_CODEC_ID_HEVC;
1018 if (s->flags & AVFMT_FLAG_NOFILLIN)
1021 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1022 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1023 if (st->last_dts_for_order_check <= pkt->dts) {
1026 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1027 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1029 st->last_dts_for_order_check);
1030 st->dts_misordered++;
1032 if (st->dts_ordered + st->dts_misordered > 250) {
1033 st->dts_ordered >>= 1;
1034 st->dts_misordered >>= 1;
1038 st->last_dts_for_order_check = pkt->dts;
1039 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1040 pkt->dts = AV_NOPTS_VALUE;
1043 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1044 pkt->dts = AV_NOPTS_VALUE;
1046 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1047 && !st->codec->has_b_frames)
1048 //FIXME Set low_delay = 0 when has_b_frames = 1
1049 st->codec->has_b_frames = 1;
1051 /* do we have a video B-frame ? */
1052 delay = st->codec->has_b_frames;
1053 presentation_delayed = 0;
1055 /* XXX: need has_b_frame, but cannot get it if the codec is
1056 * not initialized */
1058 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1059 presentation_delayed = 1;
1061 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1062 st->pts_wrap_bits < 63 &&
1063 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1064 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1065 pkt->dts -= 1LL << st->pts_wrap_bits;
1067 pkt->pts += 1LL << st->pts_wrap_bits;
1070 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1071 * We take the conservative approach and discard both.
1072 * Note: If this is misbehaving for an H.264 file, then possibly
1073 * presentation_delayed is not set correctly. */
1074 if (delay == 1 && pkt->dts == pkt->pts &&
1075 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1076 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1077 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1078 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1079 pkt->dts = AV_NOPTS_VALUE;
1082 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1083 if (pkt->duration == 0) {
1084 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1086 duration = (AVRational) {num, den};
1087 pkt->duration = av_rescale_rnd(1,
1088 num * (int64_t) st->time_base.den,
1089 den * (int64_t) st->time_base.num,
1094 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1095 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1097 /* Correct timestamps with byte offset if demuxers only have timestamps
1098 * on packet boundaries */
1099 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1100 /* this will estimate bitrate based on this frame's duration and size */
1101 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1102 if (pkt->pts != AV_NOPTS_VALUE)
1104 if (pkt->dts != AV_NOPTS_VALUE)
1108 /* This may be redundant, but it should not hurt. */
1109 if (pkt->dts != AV_NOPTS_VALUE &&
1110 pkt->pts != AV_NOPTS_VALUE &&
1111 pkt->pts > pkt->dts)
1112 presentation_delayed = 1;
1114 if (s->debug & FF_FDEBUG_TS)
1115 av_log(s, AV_LOG_TRACE,
1116 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1117 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1118 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1120 /* Interpolate PTS and DTS if they are not present. We skip H264
1121 * currently because delay and has_b_frames are not reliably set. */
1122 if ((delay == 0 || (delay == 1 && pc)) &&
1124 if (presentation_delayed) {
1125 /* DTS = decompression timestamp */
1126 /* PTS = presentation timestamp */
1127 if (pkt->dts == AV_NOPTS_VALUE)
1128 pkt->dts = st->last_IP_pts;
1129 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1130 if (pkt->dts == AV_NOPTS_VALUE)
1131 pkt->dts = st->cur_dts;
1133 /* This is tricky: the dts must be incremented by the duration
1134 * of the frame we are displaying, i.e. the last I- or P-frame. */
1135 if (st->last_IP_duration == 0)
1136 st->last_IP_duration = pkt->duration;
1137 if (pkt->dts != AV_NOPTS_VALUE)
1138 st->cur_dts = pkt->dts + st->last_IP_duration;
1139 if (pkt->dts != AV_NOPTS_VALUE &&
1140 pkt->pts == AV_NOPTS_VALUE &&
1141 st->last_IP_duration > 0 &&
1142 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1143 next_dts != next_pts &&
1144 next_pts != AV_NOPTS_VALUE)
1145 pkt->pts = next_dts;
1147 st->last_IP_duration = pkt->duration;
1148 st->last_IP_pts = pkt->pts;
1149 /* Cannot compute PTS if not present (we can compute it only
1150 * by knowing the future. */
1151 } else if (pkt->pts != AV_NOPTS_VALUE ||
1152 pkt->dts != AV_NOPTS_VALUE ||
1155 /* presentation is not delayed : PTS and DTS are the same */
1156 if (pkt->pts == AV_NOPTS_VALUE)
1157 pkt->pts = pkt->dts;
1158 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1160 if (pkt->pts == AV_NOPTS_VALUE)
1161 pkt->pts = st->cur_dts;
1162 pkt->dts = pkt->pts;
1163 if (pkt->pts != AV_NOPTS_VALUE)
1164 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1168 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)) {
1169 st->pts_buffer[0] = pkt->pts;
1170 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1171 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1173 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1175 // We skipped it above so we try here.
1177 // This should happen on the first packet
1178 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1179 if (pkt->dts > st->cur_dts)
1180 st->cur_dts = pkt->dts;
1182 if (s->debug & FF_FDEBUG_TS)
1183 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1184 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1187 if (is_intra_only(st->codec))
1188 pkt->flags |= AV_PKT_FLAG_KEY;
1189 #if FF_API_CONVERGENCE_DURATION
1190 FF_DISABLE_DEPRECATION_WARNINGS
1192 pkt->convergence_duration = pc->convergence_duration;
1193 FF_ENABLE_DEPRECATION_WARNINGS
1197 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1200 AVPacketList *pktl = *pkt_buf;
1201 *pkt_buf = pktl->next;
1202 av_packet_unref(&pktl->pkt);
1205 *pkt_buf_end = NULL;
1209 * Parse a packet, add all split parts to parse_queue.
1211 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1213 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1215 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1216 AVStream *st = s->streams[stream_index];
1217 uint8_t *data = pkt ? pkt->data : NULL;
1218 int size = pkt ? pkt->size : 0;
1219 int ret = 0, got_output = 0;
1222 av_init_packet(&flush_pkt);
1225 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1226 // preserve 0-size sync packets
1227 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1230 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1232 int64_t next_pts = pkt->pts;
1233 int64_t next_dts = pkt->dts;
1235 av_init_packet(&out_pkt);
1236 len = av_parser_parse2(st->parser, st->codec,
1237 &out_pkt.data, &out_pkt.size, data, size,
1238 pkt->pts, pkt->dts, pkt->pos);
1240 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1242 /* increment read pointer */
1246 got_output = !!out_pkt.size;
1251 if (pkt->side_data) {
1252 out_pkt.side_data = pkt->side_data;
1253 out_pkt.side_data_elems = pkt->side_data_elems;
1254 pkt->side_data = NULL;
1255 pkt->side_data_elems = 0;
1258 /* set the duration */
1259 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1260 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1261 if (st->codec->sample_rate > 0) {
1263 av_rescale_q_rnd(st->parser->duration,
1264 (AVRational) { 1, st->codec->sample_rate },
1270 out_pkt.stream_index = st->index;
1271 out_pkt.pts = st->parser->pts;
1272 out_pkt.dts = st->parser->dts;
1273 out_pkt.pos = st->parser->pos;
1275 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1276 out_pkt.pos = st->parser->frame_offset;
1278 if (st->parser->key_frame == 1 ||
1279 (st->parser->key_frame == -1 &&
1280 st->parser->pict_type == AV_PICTURE_TYPE_I))
1281 out_pkt.flags |= AV_PKT_FLAG_KEY;
1283 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1284 out_pkt.flags |= AV_PKT_FLAG_KEY;
1286 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1288 ret = add_to_pktbuf(&s->internal->parse_queue, &out_pkt,
1289 &s->internal->parse_queue_end, 1);
1290 av_packet_unref(&out_pkt);
1295 /* end of the stream => close and free the parser */
1296 if (pkt == &flush_pkt) {
1297 av_parser_close(st->parser);
1302 av_packet_unref(pkt);
1306 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1307 AVPacketList **pkt_buffer_end,
1311 av_assert0(*pkt_buffer);
1314 *pkt_buffer = pktl->next;
1316 *pkt_buffer_end = NULL;
1321 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1323 return av_rescale(ts, st->time_base.num * st->codec->sample_rate, st->time_base.den);
1326 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1328 int ret = 0, i, got_packet = 0;
1329 AVDictionary *metadata = NULL;
1331 av_init_packet(pkt);
1333 while (!got_packet && !s->internal->parse_queue) {
1337 /* read next packet */
1338 ret = ff_read_packet(s, &cur_pkt);
1340 if (ret == AVERROR(EAGAIN))
1342 /* flush the parsers */
1343 for (i = 0; i < s->nb_streams; i++) {
1345 if (st->parser && st->need_parsing)
1346 parse_packet(s, NULL, st->index);
1348 /* all remaining packets are now in parse_queue =>
1349 * really terminate parsing */
1353 st = s->streams[cur_pkt.stream_index];
1355 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1356 cur_pkt.dts != AV_NOPTS_VALUE &&
1357 cur_pkt.pts < cur_pkt.dts) {
1358 av_log(s, AV_LOG_WARNING,
1359 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1360 cur_pkt.stream_index,
1361 av_ts2str(cur_pkt.pts),
1362 av_ts2str(cur_pkt.dts),
1365 if (s->debug & FF_FDEBUG_TS)
1366 av_log(s, AV_LOG_DEBUG,
1367 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1368 cur_pkt.stream_index,
1369 av_ts2str(cur_pkt.pts),
1370 av_ts2str(cur_pkt.dts),
1371 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1373 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1374 st->parser = av_parser_init(st->codec->codec_id);
1376 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1377 "%s, packets or times may be invalid.\n",
1378 avcodec_get_name(st->codec->codec_id));
1379 /* no parser available: just output the raw packets */
1380 st->need_parsing = AVSTREAM_PARSE_NONE;
1381 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1382 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1383 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1384 st->parser->flags |= PARSER_FLAG_ONCE;
1385 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1386 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1389 if (!st->need_parsing || !st->parser) {
1390 /* no parsing needed: we just output the packet as is */
1392 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1393 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1394 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1395 ff_reduce_index(s, st->index);
1396 av_add_index_entry(st, pkt->pos, pkt->dts,
1397 0, 0, AVINDEX_KEYFRAME);
1400 } else if (st->discard < AVDISCARD_ALL) {
1401 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1405 av_packet_unref(&cur_pkt);
1407 if (pkt->flags & AV_PKT_FLAG_KEY)
1408 st->skip_to_keyframe = 0;
1409 if (st->skip_to_keyframe) {
1410 av_packet_unref(&cur_pkt);
1418 if (!got_packet && s->internal->parse_queue)
1419 ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1422 AVStream *st = s->streams[pkt->stream_index];
1423 int discard_padding = 0;
1424 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1425 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1426 int64_t sample = ts_to_samples(st, pts);
1427 int duration = ts_to_samples(st, pkt->duration);
1428 int64_t end_sample = sample + duration;
1429 if (duration > 0 && end_sample >= st->first_discard_sample &&
1430 sample < st->last_discard_sample)
1431 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1433 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1434 st->skip_samples = st->start_skip_samples;
1435 if (st->skip_samples || discard_padding) {
1436 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1438 AV_WL32(p, st->skip_samples);
1439 AV_WL32(p + 4, discard_padding);
1440 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1442 st->skip_samples = 0;
1445 if (st->inject_global_side_data) {
1446 for (i = 0; i < st->nb_side_data; i++) {
1447 AVPacketSideData *src_sd = &st->side_data[i];
1450 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1453 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1455 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1459 memcpy(dst_data, src_sd->data, src_sd->size);
1461 st->inject_global_side_data = 0;
1464 if (!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1465 av_packet_merge_side_data(pkt);
1468 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1470 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1471 av_dict_copy(&s->metadata, metadata, 0);
1472 av_dict_free(&metadata);
1473 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1476 if (s->debug & FF_FDEBUG_TS)
1477 av_log(s, AV_LOG_DEBUG,
1478 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1479 "size=%d, duration=%"PRId64", flags=%d\n",
1481 av_ts2str(pkt->pts),
1482 av_ts2str(pkt->dts),
1483 pkt->size, pkt->duration, pkt->flags);
1488 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1490 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1496 ret = s->internal->packet_buffer
1497 ? read_from_packet_buffer(&s->internal->packet_buffer,
1498 &s->internal->packet_buffer_end, pkt)
1499 : read_frame_internal(s, pkt);
1506 AVPacketList *pktl = s->internal->packet_buffer;
1509 AVPacket *next_pkt = &pktl->pkt;
1511 if (next_pkt->dts != AV_NOPTS_VALUE) {
1512 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1513 // last dts seen for this stream. if any of packets following
1514 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1515 int64_t last_dts = next_pkt->dts;
1516 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1517 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1518 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1519 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) {
1521 next_pkt->pts = pktl->pkt.dts;
1523 if (last_dts != AV_NOPTS_VALUE) {
1524 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1525 last_dts = pktl->pkt.dts;
1530 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1531 // Fixing the last reference frame had none pts issue (For MXF etc).
1532 // We only do this when
1534 // 2. we are not able to resolve a pts value for current packet.
1535 // 3. the packets for this stream at the end of the files had valid dts.
1536 next_pkt->pts = last_dts + next_pkt->duration;
1538 pktl = s->internal->packet_buffer;
1541 /* read packet from packet buffer, if there is data */
1542 st = s->streams[next_pkt->stream_index];
1543 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1544 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1545 ret = read_from_packet_buffer(&s->internal->packet_buffer,
1546 &s->internal->packet_buffer_end, pkt);
1551 ret = read_frame_internal(s, pkt);
1553 if (pktl && ret != AVERROR(EAGAIN)) {
1560 ret = add_to_pktbuf(&s->internal->packet_buffer, pkt,
1561 &s->internal->packet_buffer_end, 1);
1562 av_packet_unref(pkt);
1569 st = s->streams[pkt->stream_index];
1570 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1571 ff_reduce_index(s, st->index);
1572 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1575 if (is_relative(pkt->dts))
1576 pkt->dts -= RELATIVE_TS_BASE;
1577 if (is_relative(pkt->pts))
1578 pkt->pts -= RELATIVE_TS_BASE;
1583 /* XXX: suppress the packet queue */
1584 static void flush_packet_queue(AVFormatContext *s)
1588 free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
1589 free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1590 free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1592 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1595 /*******************************************************/
1598 int av_find_default_stream_index(AVFormatContext *s)
1602 int best_stream = 0;
1603 int best_score = INT_MIN;
1605 if (s->nb_streams <= 0)
1607 for (i = 0; i < s->nb_streams; i++) {
1610 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1611 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1613 if (st->codec->width && st->codec->height)
1617 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1618 if (st->codec->sample_rate)
1621 if (st->codec_info_nb_frames)
1624 if (st->discard != AVDISCARD_ALL)
1627 if (score > best_score) {
1635 /** Flush the frame reader. */
1636 void ff_read_frame_flush(AVFormatContext *s)
1641 flush_packet_queue(s);
1643 /* Reset read state for each stream. */
1644 for (i = 0; i < s->nb_streams; i++) {
1648 av_parser_close(st->parser);
1651 st->last_IP_pts = AV_NOPTS_VALUE;
1652 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1653 if (st->first_dts == AV_NOPTS_VALUE)
1654 st->cur_dts = RELATIVE_TS_BASE;
1656 /* We set the current DTS to an unspecified origin. */
1657 st->cur_dts = AV_NOPTS_VALUE;
1659 st->probe_packets = MAX_PROBE_PACKETS;
1661 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1662 st->pts_buffer[j] = AV_NOPTS_VALUE;
1664 if (s->internal->inject_global_side_data)
1665 st->inject_global_side_data = 1;
1667 st->skip_samples = 0;
1671 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1675 for (i = 0; i < s->nb_streams; i++) {
1676 AVStream *st = s->streams[i];
1679 av_rescale(timestamp,
1680 st->time_base.den * (int64_t) ref_st->time_base.num,
1681 st->time_base.num * (int64_t) ref_st->time_base.den);
1685 void ff_reduce_index(AVFormatContext *s, int stream_index)
1687 AVStream *st = s->streams[stream_index];
1688 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1690 if ((unsigned) st->nb_index_entries >= max_entries) {
1692 for (i = 0; 2 * i < st->nb_index_entries; i++)
1693 st->index_entries[i] = st->index_entries[2 * i];
1694 st->nb_index_entries = i;
1698 int ff_add_index_entry(AVIndexEntry **index_entries,
1699 int *nb_index_entries,
1700 unsigned int *index_entries_allocated_size,
1701 int64_t pos, int64_t timestamp,
1702 int size, int distance, int flags)
1704 AVIndexEntry *entries, *ie;
1707 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1710 if (timestamp == AV_NOPTS_VALUE)
1711 return AVERROR(EINVAL);
1713 if (size < 0 || size > 0x3FFFFFFF)
1714 return AVERROR(EINVAL);
1716 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1717 timestamp -= RELATIVE_TS_BASE;
1719 entries = av_fast_realloc(*index_entries,
1720 index_entries_allocated_size,
1721 (*nb_index_entries + 1) *
1722 sizeof(AVIndexEntry));
1726 *index_entries = entries;
1728 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1729 timestamp, AVSEEK_FLAG_ANY);
1732 index = (*nb_index_entries)++;
1733 ie = &entries[index];
1734 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1736 ie = &entries[index];
1737 if (ie->timestamp != timestamp) {
1738 if (ie->timestamp <= timestamp)
1740 memmove(entries + index + 1, entries + index,
1741 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1742 (*nb_index_entries)++;
1743 } else if (ie->pos == pos && distance < ie->min_distance)
1744 // do not reduce the distance
1745 distance = ie->min_distance;
1749 ie->timestamp = timestamp;
1750 ie->min_distance = distance;
1757 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
1758 int size, int distance, int flags)
1760 timestamp = wrap_timestamp(st, timestamp);
1761 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1762 &st->index_entries_allocated_size, pos,
1763 timestamp, size, distance, flags);
1766 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1767 int64_t wanted_timestamp, int flags)
1775 // Optimize appending index entries at the end.
1776 if (b && entries[b - 1].timestamp < wanted_timestamp)
1781 timestamp = entries[m].timestamp;
1782 if (timestamp >= wanted_timestamp)
1784 if (timestamp <= wanted_timestamp)
1787 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1789 if (!(flags & AVSEEK_FLAG_ANY))
1790 while (m >= 0 && m < nb_entries &&
1791 !(entries[m].flags & AVINDEX_KEYFRAME))
1792 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1794 if (m == nb_entries)
1799 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
1802 int64_t pos_delta = 0;
1804 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
1805 const char *proto = avio_find_protocol_name(s->filename);
1808 av_log(s, AV_LOG_INFO,
1809 "Protocol name not provided, cannot determine if input is local or "
1810 "a network protocol, buffers and access patterns cannot be configured "
1811 "optimally without knowing the protocol\n");
1814 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
1817 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
1818 AVStream *st1 = s->streams[ist1];
1819 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
1820 AVStream *st2 = s->streams[ist2];
1826 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
1827 AVIndexEntry *e1 = &st1->index_entries[i1];
1828 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
1830 skip = FFMAX(skip, e1->size);
1831 for (; i2 < st2->nb_index_entries; i2++) {
1832 AVIndexEntry *e2 = &st2->index_entries[i2];
1833 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
1834 if (e2_pts - e1_pts < time_tolerance)
1836 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
1844 /* XXX This could be adjusted depending on protocol*/
1845 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
1846 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
1847 ffio_set_buf_size(s->pb, pos_delta);
1848 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
1851 if (skip < (1<<23)) {
1852 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
1856 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
1858 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1859 wanted_timestamp, flags);
1862 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1863 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1865 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1866 if (stream_index >= 0)
1867 ts = wrap_timestamp(s->streams[stream_index], ts);
1871 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
1872 int64_t target_ts, int flags)
1874 AVInputFormat *avif = s->iformat;
1875 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1876 int64_t ts_min, ts_max, ts;
1881 if (stream_index < 0)
1884 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1887 ts_min = AV_NOPTS_VALUE;
1888 pos_limit = -1; // GCC falsely says it may be uninitialized.
1890 st = s->streams[stream_index];
1891 if (st->index_entries) {
1894 /* FIXME: Whole function must be checked for non-keyframe entries in
1895 * index case, especially read_timestamp(). */
1896 index = av_index_search_timestamp(st, target_ts,
1897 flags | AVSEEK_FLAG_BACKWARD);
1898 index = FFMAX(index, 0);
1899 e = &st->index_entries[index];
1901 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
1903 ts_min = e->timestamp;
1904 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1905 pos_min, av_ts2str(ts_min));
1907 av_assert1(index == 0);
1910 index = av_index_search_timestamp(st, target_ts,
1911 flags & ~AVSEEK_FLAG_BACKWARD);
1912 av_assert0(index < st->nb_index_entries);
1914 e = &st->index_entries[index];
1915 av_assert1(e->timestamp >= target_ts);
1917 ts_max = e->timestamp;
1918 pos_limit = pos_max - e->min_distance;
1919 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
1920 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
1924 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
1925 ts_min, ts_max, flags, &ts, avif->read_timestamp);
1930 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1933 ff_read_frame_flush(s);
1934 ff_update_cur_dts(s, st, ts);
1939 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1940 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1942 int64_t step = 1024;
1943 int64_t limit, ts_max;
1944 int64_t filesize = avio_size(s->pb);
1945 int64_t pos_max = filesize - 1;
1948 pos_max = FFMAX(0, (pos_max) - step);
1949 ts_max = ff_read_timestamp(s, stream_index,
1950 &pos_max, limit, read_timestamp);
1952 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
1953 if (ts_max == AV_NOPTS_VALUE)
1957 int64_t tmp_pos = pos_max + 1;
1958 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
1959 &tmp_pos, INT64_MAX, read_timestamp);
1960 if (tmp_ts == AV_NOPTS_VALUE)
1962 av_assert0(tmp_pos > pos_max);
1965 if (tmp_pos >= filesize)
1977 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1978 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1979 int64_t ts_min, int64_t ts_max,
1980 int flags, int64_t *ts_ret,
1981 int64_t (*read_timestamp)(struct AVFormatContext *, int,
1982 int64_t *, int64_t))
1989 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1991 if (ts_min == AV_NOPTS_VALUE) {
1992 pos_min = s->internal->data_offset;
1993 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1994 if (ts_min == AV_NOPTS_VALUE)
1998 if (ts_min >= target_ts) {
2003 if (ts_max == AV_NOPTS_VALUE) {
2004 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2006 pos_limit = pos_max;
2009 if (ts_max <= target_ts) {
2014 av_assert0(ts_min < ts_max);
2017 while (pos_min < pos_limit) {
2018 av_log(s, AV_LOG_TRACE,
2019 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2020 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2021 av_assert0(pos_limit <= pos_max);
2023 if (no_change == 0) {
2024 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2025 // interpolate position (better than dichotomy)
2026 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2028 pos_min - approximate_keyframe_distance;
2029 } else if (no_change == 1) {
2030 // bisection if interpolation did not change min / max pos last time
2031 pos = (pos_min + pos_limit) >> 1;
2033 /* linear search if bisection failed, can only happen if there
2034 * are very few or no keyframes between min/max */
2039 else if (pos > pos_limit)
2043 // May pass pos_limit instead of -1.
2044 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2049 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2050 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2051 pos_min, pos, pos_max,
2052 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2053 pos_limit, start_pos, no_change);
2054 if (ts == AV_NOPTS_VALUE) {
2055 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2058 if (target_ts <= ts) {
2059 pos_limit = start_pos - 1;
2063 if (target_ts >= ts) {
2069 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2070 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2073 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2075 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2076 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2077 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2083 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2084 int64_t pos, int flags)
2086 int64_t pos_min, pos_max;
2088 pos_min = s->internal->data_offset;
2089 pos_max = avio_size(s->pb) - 1;
2093 else if (pos > pos_max)
2096 avio_seek(s->pb, pos, SEEK_SET);
2098 s->io_repositioned = 1;
2103 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2104 int64_t timestamp, int flags)
2111 st = s->streams[stream_index];
2113 index = av_index_search_timestamp(st, timestamp, flags);
2115 if (index < 0 && st->nb_index_entries &&
2116 timestamp < st->index_entries[0].timestamp)
2119 if (index < 0 || index == st->nb_index_entries - 1) {
2123 if (st->nb_index_entries) {
2124 av_assert0(st->index_entries);
2125 ie = &st->index_entries[st->nb_index_entries - 1];
2126 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2128 ff_update_cur_dts(s, st, ie->timestamp);
2130 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2136 read_status = av_read_frame(s, &pkt);
2137 } while (read_status == AVERROR(EAGAIN));
2138 if (read_status < 0)
2140 av_packet_unref(&pkt);
2141 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2142 if (pkt.flags & AV_PKT_FLAG_KEY)
2144 if (nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2145 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);
2150 index = av_index_search_timestamp(st, timestamp, flags);
2155 ff_read_frame_flush(s);
2156 if (s->iformat->read_seek)
2157 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2159 ie = &st->index_entries[index];
2160 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2162 ff_update_cur_dts(s, st, ie->timestamp);
2167 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2168 int64_t timestamp, int flags)
2173 if (flags & AVSEEK_FLAG_BYTE) {
2174 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2176 ff_read_frame_flush(s);
2177 return seek_frame_byte(s, stream_index, timestamp, flags);
2180 if (stream_index < 0) {
2181 stream_index = av_find_default_stream_index(s);
2182 if (stream_index < 0)
2185 st = s->streams[stream_index];
2186 /* timestamp for default must be expressed in AV_TIME_BASE units */
2187 timestamp = av_rescale(timestamp, st->time_base.den,
2188 AV_TIME_BASE * (int64_t) st->time_base.num);
2191 /* first, we try the format specific seek */
2192 if (s->iformat->read_seek) {
2193 ff_read_frame_flush(s);
2194 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2200 if (s->iformat->read_timestamp &&
2201 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2202 ff_read_frame_flush(s);
2203 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2204 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2205 ff_read_frame_flush(s);
2206 return seek_frame_generic(s, stream_index, timestamp, flags);
2211 int av_seek_frame(AVFormatContext *s, int stream_index,
2212 int64_t timestamp, int flags)
2216 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2217 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2218 if ((flags & AVSEEK_FLAG_BACKWARD))
2222 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2223 flags & ~AVSEEK_FLAG_BACKWARD);
2226 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2229 ret = avformat_queue_attached_pictures(s);
2234 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2235 int64_t ts, int64_t max_ts, int flags)
2237 if (min_ts > ts || max_ts < ts)
2239 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2240 return AVERROR(EINVAL);
2243 flags |= AVSEEK_FLAG_ANY;
2244 flags &= ~AVSEEK_FLAG_BACKWARD;
2246 if (s->iformat->read_seek2) {
2248 ff_read_frame_flush(s);
2250 if (stream_index == -1 && s->nb_streams == 1) {
2251 AVRational time_base = s->streams[0]->time_base;
2252 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2253 min_ts = av_rescale_rnd(min_ts, time_base.den,
2254 time_base.num * (int64_t)AV_TIME_BASE,
2255 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2256 max_ts = av_rescale_rnd(max_ts, time_base.den,
2257 time_base.num * (int64_t)AV_TIME_BASE,
2258 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2261 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2265 ret = avformat_queue_attached_pictures(s);
2269 if (s->iformat->read_timestamp) {
2270 // try to seek via read_timestamp()
2273 // Fall back on old API if new is not implemented but old is.
2274 // Note the old API has somewhat different semantics.
2275 if (s->iformat->read_seek || 1) {
2276 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2277 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2278 if (ret<0 && ts != min_ts && max_ts != ts) {
2279 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2281 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2286 // try some generic seek like seek_frame_generic() but with new ts semantics
2287 return -1; //unreachable
2290 int avformat_flush(AVFormatContext *s)
2292 ff_read_frame_flush(s);
2296 /*******************************************************/
2299 * Return TRUE if the stream has accurate duration in any stream.
2301 * @return TRUE if the stream has accurate duration for at least one component.
2303 static int has_duration(AVFormatContext *ic)
2308 for (i = 0; i < ic->nb_streams; i++) {
2309 st = ic->streams[i];
2310 if (st->duration != AV_NOPTS_VALUE)
2313 if (ic->duration != AV_NOPTS_VALUE)
2319 * Estimate the stream timings from the one of each components.
2321 * Also computes the global bitrate if possible.
2323 static void update_stream_timings(AVFormatContext *ic)
2325 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2326 int64_t duration, duration1, filesize;
2331 start_time = INT64_MAX;
2332 start_time_text = INT64_MAX;
2333 end_time = INT64_MIN;
2334 duration = INT64_MIN;
2335 for (i = 0; i < ic->nb_streams; i++) {
2336 st = ic->streams[i];
2337 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2338 start_time1 = av_rescale_q(st->start_time, st->time_base,
2340 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2341 if (start_time1 < start_time_text)
2342 start_time_text = start_time1;
2344 start_time = FFMIN(start_time, start_time1);
2345 end_time1 = AV_NOPTS_VALUE;
2346 if (st->duration != AV_NOPTS_VALUE) {
2347 end_time1 = start_time1 +
2348 av_rescale_q(st->duration, st->time_base,
2350 end_time = FFMAX(end_time, end_time1);
2352 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2353 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2354 p->start_time = start_time1;
2355 if (p->end_time < end_time1)
2356 p->end_time = end_time1;
2359 if (st->duration != AV_NOPTS_VALUE) {
2360 duration1 = av_rescale_q(st->duration, st->time_base,
2362 duration = FFMAX(duration, duration1);
2365 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2366 start_time = start_time_text;
2367 else if (start_time > start_time_text)
2368 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2370 if (start_time != INT64_MAX) {
2371 ic->start_time = start_time;
2372 if (end_time != INT64_MIN) {
2373 if (ic->nb_programs) {
2374 for (i = 0; i < ic->nb_programs; i++) {
2375 p = ic->programs[i];
2376 if (p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2377 duration = FFMAX(duration, p->end_time - p->start_time);
2380 duration = FFMAX(duration, end_time - start_time);
2383 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2384 ic->duration = duration;
2386 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2387 /* compute the bitrate */
2388 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2389 (double) ic->duration;
2390 if (bitrate >= 0 && bitrate <= INT64_MAX)
2391 ic->bit_rate = bitrate;
2395 static void fill_all_stream_timings(AVFormatContext *ic)
2400 update_stream_timings(ic);
2401 for (i = 0; i < ic->nb_streams; i++) {
2402 st = ic->streams[i];
2403 if (st->start_time == AV_NOPTS_VALUE) {
2404 if (ic->start_time != AV_NOPTS_VALUE)
2405 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2407 if (ic->duration != AV_NOPTS_VALUE)
2408 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2414 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2416 int64_t filesize, duration;
2417 int i, show_warning = 0;
2420 /* if bit_rate is already set, we believe it */
2421 if (ic->bit_rate <= 0) {
2423 for (i = 0; i < ic->nb_streams; i++) {
2424 st = ic->streams[i];
2425 if (st->codec->bit_rate > 0) {
2426 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2430 bit_rate += st->codec->bit_rate;
2431 } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2432 // If we have a videostream with packets but without a bitrate
2433 // then consider the sum not known
2438 ic->bit_rate = bit_rate;
2441 /* if duration is already set, we believe it */
2442 if (ic->duration == AV_NOPTS_VALUE &&
2443 ic->bit_rate != 0) {
2444 filesize = ic->pb ? avio_size(ic->pb) : 0;
2445 if (filesize > ic->internal->data_offset) {
2446 filesize -= ic->internal->data_offset;
2447 for (i = 0; i < ic->nb_streams; i++) {
2448 st = ic->streams[i];
2449 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2450 && st->duration == AV_NOPTS_VALUE) {
2451 duration = av_rescale(8 * filesize, st->time_base.den,
2453 (int64_t) st->time_base.num);
2454 st->duration = duration;
2461 av_log(ic, AV_LOG_WARNING,
2462 "Estimating duration from bitrate, this may be inaccurate\n");
2465 #define DURATION_MAX_READ_SIZE 250000LL
2466 #define DURATION_MAX_RETRY 6
2468 /* only usable for MPEG-PS streams */
2469 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2471 AVPacket pkt1, *pkt = &pkt1;
2473 int num, den, read_size, i, ret;
2474 int found_duration = 0;
2476 int64_t filesize, offset, duration;
2479 /* flush packet queue */
2480 flush_packet_queue(ic);
2482 for (i = 0; i < ic->nb_streams; i++) {
2483 st = ic->streams[i];
2484 if (st->start_time == AV_NOPTS_VALUE &&
2485 st->first_dts == AV_NOPTS_VALUE &&
2486 st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN)
2487 av_log(st->codec, AV_LOG_WARNING,
2488 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2491 av_parser_close(st->parser);
2496 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2497 /* estimate the end time (duration) */
2498 /* XXX: may need to support wrapping */
2499 filesize = ic->pb ? avio_size(ic->pb) : 0;
2501 is_end = found_duration;
2502 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2506 avio_seek(ic->pb, offset, SEEK_SET);
2509 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2513 ret = ff_read_packet(ic, pkt);
2514 } while (ret == AVERROR(EAGAIN));
2517 read_size += pkt->size;
2518 st = ic->streams[pkt->stream_index];
2519 if (pkt->pts != AV_NOPTS_VALUE &&
2520 (st->start_time != AV_NOPTS_VALUE ||
2521 st->first_dts != AV_NOPTS_VALUE)) {
2522 if (pkt->duration == 0) {
2523 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2525 pkt->duration = av_rescale_rnd(1,
2526 num * (int64_t) st->time_base.den,
2527 den * (int64_t) st->time_base.num,
2531 duration = pkt->pts + pkt->duration;
2533 if (st->start_time != AV_NOPTS_VALUE)
2534 duration -= st->start_time;
2536 duration -= st->first_dts;
2538 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2539 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2540 st->duration = duration;
2541 st->info->last_duration = duration;
2544 av_packet_unref(pkt);
2547 /* check if all audio/video streams have valid duration */
2550 for (i = 0; i < ic->nb_streams; i++) {
2551 st = ic->streams[i];
2552 switch (st->codec->codec_type) {
2553 case AVMEDIA_TYPE_VIDEO:
2554 case AVMEDIA_TYPE_AUDIO:
2555 if (st->duration == AV_NOPTS_VALUE)
2562 ++retry <= DURATION_MAX_RETRY);
2564 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2566 /* warn about audio/video streams which duration could not be estimated */
2567 for (i = 0; i < ic->nb_streams; i++) {
2568 st = ic->streams[i];
2569 if (st->duration == AV_NOPTS_VALUE) {
2570 switch (st->codec->codec_type) {
2571 case AVMEDIA_TYPE_VIDEO:
2572 case AVMEDIA_TYPE_AUDIO:
2573 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2574 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2576 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2580 fill_all_stream_timings(ic);
2582 avio_seek(ic->pb, old_offset, SEEK_SET);
2583 for (i = 0; i < ic->nb_streams; i++) {
2586 st = ic->streams[i];
2587 st->cur_dts = st->first_dts;
2588 st->last_IP_pts = AV_NOPTS_VALUE;
2589 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2590 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2591 st->pts_buffer[j] = AV_NOPTS_VALUE;
2595 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2599 /* get the file size, if possible */
2600 if (ic->iformat->flags & AVFMT_NOFILE) {
2603 file_size = avio_size(ic->pb);
2604 file_size = FFMAX(0, file_size);
2607 if ((!strcmp(ic->iformat->name, "mpeg") ||
2608 !strcmp(ic->iformat->name, "mpegts")) &&
2609 file_size && ic->pb->seekable) {
2610 /* get accurate estimate from the PTSes */
2611 estimate_timings_from_pts(ic, old_offset);
2612 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2613 } else if (has_duration(ic)) {
2614 /* at least one component has timings - we use them for all
2616 fill_all_stream_timings(ic);
2617 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2619 /* less precise: use bitrate info */
2620 estimate_timings_from_bit_rate(ic);
2621 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2623 update_stream_timings(ic);
2627 AVStream av_unused *st;
2628 for (i = 0; i < ic->nb_streams; i++) {
2629 st = ic->streams[i];
2630 av_log(ic, AV_LOG_TRACE, "%d: start_time: %0.3f duration: %0.3f\n", i,
2631 (double) st->start_time / AV_TIME_BASE,
2632 (double) st->duration / AV_TIME_BASE);
2634 av_log(ic, AV_LOG_TRACE,
2635 "stream: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2636 (double) ic->start_time / AV_TIME_BASE,
2637 (double) ic->duration / AV_TIME_BASE,
2638 (int64_t)ic->bit_rate / 1000);
2642 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2644 AVCodecContext *avctx = st->codec;
2646 #define FAIL(errmsg) do { \
2648 *errmsg_ptr = errmsg; \
2652 if ( avctx->codec_id == AV_CODEC_ID_NONE
2653 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2654 FAIL("unknown codec");
2655 switch (avctx->codec_type) {
2656 case AVMEDIA_TYPE_AUDIO:
2657 if (!avctx->frame_size && determinable_frame_size(avctx))
2658 FAIL("unspecified frame size");
2659 if (st->info->found_decoder >= 0 &&
2660 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2661 FAIL("unspecified sample format");
2662 if (!avctx->sample_rate)
2663 FAIL("unspecified sample rate");
2664 if (!avctx->channels)
2665 FAIL("unspecified number of channels");
2666 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2667 FAIL("no decodable DTS frames");
2669 case AVMEDIA_TYPE_VIDEO:
2671 FAIL("unspecified size");
2672 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2673 FAIL("unspecified pixel format");
2674 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2675 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2676 FAIL("no frame in rv30/40 and no sar");
2678 case AVMEDIA_TYPE_SUBTITLE:
2679 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2680 FAIL("unspecified size");
2682 case AVMEDIA_TYPE_DATA:
2683 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2689 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2690 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2691 AVDictionary **options)
2693 const AVCodec *codec;
2694 int got_picture = 1, ret = 0;
2695 AVFrame *frame = av_frame_alloc();
2696 AVSubtitle subtitle;
2697 AVPacket pkt = *avpkt;
2698 int do_skip_frame = 0;
2699 enum AVDiscard skip_frame;
2702 return AVERROR(ENOMEM);
2704 if (!avcodec_is_open(st->codec) &&
2705 st->info->found_decoder <= 0 &&
2706 (st->codec->codec_id != -st->info->found_decoder || !st->codec->codec_id)) {
2707 AVDictionary *thread_opt = NULL;
2709 codec = find_decoder(s, st, st->codec->codec_id);
2712 st->info->found_decoder = -st->codec->codec_id;
2717 /* Force thread count to 1 since the H.264 decoder will not extract
2718 * SPS and PPS to extradata during multi-threaded decoding. */
2719 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2720 if (s->codec_whitelist)
2721 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
2722 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2724 av_dict_free(&thread_opt);
2726 st->info->found_decoder = -st->codec->codec_id;
2729 st->info->found_decoder = 1;
2730 } else if (!st->info->found_decoder)
2731 st->info->found_decoder = 1;
2733 if (st->info->found_decoder < 0) {
2738 if (st->codec->codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM) {
2740 skip_frame = st->codec->skip_frame;
2741 st->codec->skip_frame = AVDISCARD_ALL;
2744 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2746 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
2747 (!st->codec_info_nb_frames &&
2748 (st->codec->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
2750 switch (st->codec->codec_type) {
2751 case AVMEDIA_TYPE_VIDEO:
2752 ret = avcodec_decode_video2(st->codec, frame,
2753 &got_picture, &pkt);
2755 case AVMEDIA_TYPE_AUDIO:
2756 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2758 case AVMEDIA_TYPE_SUBTITLE:
2759 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2760 &got_picture, &pkt);
2768 st->nb_decoded_frames++;
2775 if (!pkt.data && !got_picture)
2779 if (do_skip_frame) {
2780 st->codec->skip_frame = skip_frame;
2783 av_frame_free(&frame);
2787 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2789 while (tags->id != AV_CODEC_ID_NONE) {
2797 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2800 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2801 if (tag == tags[i].tag)
2803 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2804 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2806 return AV_CODEC_ID_NONE;
2809 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2814 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2816 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2818 return AV_CODEC_ID_NONE;
2823 if (sflags & (1 << (bps - 1))) {
2826 return AV_CODEC_ID_PCM_S8;
2828 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2830 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2832 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2834 return AV_CODEC_ID_NONE;
2839 return AV_CODEC_ID_PCM_U8;
2841 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2843 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2845 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2847 return AV_CODEC_ID_NONE;
2853 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
2856 if (!av_codec_get_tag2(tags, id, &tag))
2861 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2865 for (i = 0; tags && tags[i]; i++) {
2866 const AVCodecTag *codec_tags = tags[i];
2867 while (codec_tags->id != AV_CODEC_ID_NONE) {
2868 if (codec_tags->id == id) {
2869 *tag = codec_tags->tag;
2878 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
2881 for (i = 0; tags && tags[i]; i++) {
2882 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
2883 if (id != AV_CODEC_ID_NONE)
2886 return AV_CODEC_ID_NONE;
2889 static void compute_chapters_end(AVFormatContext *s)
2892 int64_t max_time = s->duration +
2893 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2895 for (i = 0; i < s->nb_chapters; i++)
2896 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2897 AVChapter *ch = s->chapters[i];
2898 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
2902 for (j = 0; j < s->nb_chapters; j++) {
2903 AVChapter *ch1 = s->chapters[j];
2904 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
2906 if (j != i && next_start > ch->start && next_start < end)
2909 ch->end = (end == INT64_MAX) ? ch->start : end;
2913 static int get_std_framerate(int i)
2916 return (i + 1) * 1001;
2920 return ((const int[]) { 40, 48, 50, 60, 80, 120, 240})[i] * 1001 * 12;
2924 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
2927 /* Is the time base unreliable?
2928 * This is a heuristic to balance between quick acceptance of the values in
2929 * the headers vs. some extra checks.
2930 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2931 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2932 * And there are "variable" fps files this needs to detect as well. */
2933 static int tb_unreliable(AVCodecContext *c)
2935 if (c->time_base.den >= 101LL * c->time_base.num ||
2936 c->time_base.den < 5LL * c->time_base.num ||
2937 // c->codec_tag == AV_RL32("DIVX") ||
2938 // c->codec_tag == AV_RL32("XVID") ||
2939 c->codec_tag == AV_RL32("mp4v") ||
2940 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
2941 c->codec_id == AV_CODEC_ID_GIF ||
2942 c->codec_id == AV_CODEC_ID_HEVC ||
2943 c->codec_id == AV_CODEC_ID_H264)
2948 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2952 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
2953 avctx->extradata = NULL;
2954 avctx->extradata_size = 0;
2955 return AVERROR(EINVAL);
2957 avctx->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
2958 if (avctx->extradata) {
2959 memset(avctx->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
2960 avctx->extradata_size = size;
2963 avctx->extradata_size = 0;
2964 ret = AVERROR(ENOMEM);
2969 int ff_get_extradata(AVCodecContext *avctx, AVIOContext *pb, int size)
2971 int ret = ff_alloc_extradata(avctx, size);
2974 ret = avio_read(pb, avctx->extradata, size);
2976 av_freep(&avctx->extradata);
2977 avctx->extradata_size = 0;
2978 av_log(avctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
2979 return ret < 0 ? ret : AVERROR_INVALIDDATA;
2985 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2988 int64_t last = st->info->last_dts;
2990 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2991 && ts - (uint64_t)last < INT64_MAX) {
2992 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2993 int64_t duration = ts - last;
2995 if (!st->info->duration_error)
2996 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2997 if (!st->info->duration_error)
2998 return AVERROR(ENOMEM);
3000 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3001 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3002 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3003 if (st->info->duration_error[0][1][i] < 1e10) {
3004 int framerate = get_std_framerate(i);
3005 double sdts = dts*framerate/(1001*12);
3006 for (j= 0; j<2; j++) {
3007 int64_t ticks = llrint(sdts+j*0.5);
3008 double error= sdts - ticks + j*0.5;
3009 st->info->duration_error[j][0][i] += error;
3010 st->info->duration_error[j][1][i] += error*error;
3014 st->info->duration_count++;
3015 st->info->rfps_duration_sum += duration;
3017 if (st->info->duration_count % 10 == 0) {
3018 int n = st->info->duration_count;
3019 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3020 if (st->info->duration_error[0][1][i] < 1e10) {
3021 double a0 = st->info->duration_error[0][0][i] / n;
3022 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3023 double a1 = st->info->duration_error[1][0][i] / n;
3024 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3025 if (error0 > 0.04 && error1 > 0.04) {
3026 st->info->duration_error[0][1][i] = 2e10;
3027 st->info->duration_error[1][1][i] = 2e10;
3033 // ignore the first 4 values, they might have some random jitter
3034 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3035 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3037 if (ts != AV_NOPTS_VALUE)
3038 st->info->last_dts = ts;
3043 void ff_rfps_calculate(AVFormatContext *ic)
3047 for (i = 0; i < ic->nb_streams; i++) {
3048 AVStream *st = ic->streams[i];
3050 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
3052 // the check for tb_unreliable() is not completely correct, since this is not about handling
3053 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3054 // ipmovie.c produces.
3055 if (tb_unreliable(st->codec) && 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)
3056 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);
3057 if (st->info->duration_count>1 && !st->r_frame_rate.num
3058 && tb_unreliable(st->codec)) {
3060 double best_error= 0.01;
3061 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3063 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3066 if (st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3068 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3071 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3074 for (k= 0; k<2; k++) {
3075 int n = st->info->duration_count;
3076 double a= st->info->duration_error[k][0][j] / n;
3077 double error= st->info->duration_error[k][1][j]/n - a*a;
3079 if (error < best_error && best_error> 0.000000001) {
3081 num = get_std_framerate(j);
3084 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3087 // do not increase frame rate by more than 1 % in order to match a standard rate.
3088 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3089 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3091 if ( !st->avg_frame_rate.num
3092 && st->r_frame_rate.num && st->info->rfps_duration_sum
3093 && st->info->codec_info_duration <= 0
3094 && st->info->duration_count > 2
3095 && 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
3097 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3098 st->avg_frame_rate = st->r_frame_rate;
3101 av_freep(&st->info->duration_error);
3102 st->info->last_dts = AV_NOPTS_VALUE;
3103 st->info->duration_count = 0;
3104 st->info->rfps_duration_sum = 0;
3108 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3110 int i, count, ret = 0, j;
3113 AVPacket pkt1, *pkt;
3114 int64_t old_offset = avio_tell(ic->pb);
3115 // new streams might appear, no options for those
3116 int orig_nb_streams = ic->nb_streams;
3118 int64_t max_analyze_duration = ic->max_analyze_duration;
3119 int64_t max_stream_analyze_duration;
3120 int64_t max_subtitle_analyze_duration;
3121 int64_t probesize = ic->probesize;
3123 flush_codecs = probesize > 0;
3125 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3127 max_stream_analyze_duration = max_analyze_duration;
3128 max_subtitle_analyze_duration = max_analyze_duration;
3129 if (!max_analyze_duration) {
3130 max_stream_analyze_duration =
3131 max_analyze_duration = 5*AV_TIME_BASE;
3132 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3133 if (!strcmp(ic->iformat->name, "flv"))
3134 max_stream_analyze_duration = 90*AV_TIME_BASE;
3138 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
3139 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
3141 for (i = 0; i < ic->nb_streams; i++) {
3142 const AVCodec *codec;
3143 AVDictionary *thread_opt = NULL;
3144 st = ic->streams[i];
3146 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3147 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3148 /* if (!st->time_base.num)
3150 if (!st->codec->time_base.num)
3151 st->codec->time_base = st->time_base;
3153 // only for the split stuff
3154 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3155 st->parser = av_parser_init(st->codec->codec_id);
3157 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3158 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3159 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3160 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3162 } else if (st->need_parsing) {
3163 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3164 "%s, packets or times may be invalid.\n",
3165 avcodec_get_name(st->codec->codec_id));
3168 codec = find_decoder(ic, st, st->codec->codec_id);
3170 /* Force thread count to 1 since the H.264 decoder will not extract
3171 * SPS and PPS to extradata during multi-threaded decoding. */
3172 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3174 if (ic->codec_whitelist)
3175 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3177 /* Ensure that subtitle_header is properly set. */
3178 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
3179 && codec && !st->codec->codec) {
3180 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
3181 av_log(ic, AV_LOG_WARNING,
3182 "Failed to open codec in av_find_stream_info\n");
3185 // Try to just open decoders, in case this is enough to get parameters.
3186 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3187 if (codec && !st->codec->codec)
3188 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
3189 av_log(ic, AV_LOG_WARNING,
3190 "Failed to open codec in av_find_stream_info\n");
3193 av_dict_free(&thread_opt);
3196 for (i = 0; i < ic->nb_streams; i++) {
3197 #if FF_API_R_FRAME_RATE
3198 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3200 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3201 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3207 int analyzed_all_streams;
3208 if (ff_check_interrupt(&ic->interrupt_callback)) {
3210 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3214 /* check if one codec still needs to be handled */
3215 for (i = 0; i < ic->nb_streams; i++) {
3216 int fps_analyze_framecount = 20;
3218 st = ic->streams[i];
3219 if (!has_codec_parameters(st, NULL))
3221 /* If the timebase is coarse (like the usual millisecond precision
3222 * of mkv), we need to analyze more frames to reliably arrive at
3223 * the correct fps. */
3224 if (av_q2d(st->time_base) > 0.0005)
3225 fps_analyze_framecount *= 2;
3226 if (!tb_unreliable(st->codec))
3227 fps_analyze_framecount = 0;
3228 if (ic->fps_probe_size >= 0)
3229 fps_analyze_framecount = ic->fps_probe_size;
3230 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3231 fps_analyze_framecount = 0;
3232 /* variable fps and no guess at the real fps */
3233 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3234 st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3235 int count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3236 st->info->codec_info_duration_fields/2 :
3237 st->info->duration_count;
3238 if (count < fps_analyze_framecount)
3241 if (st->parser && st->parser->parser->split &&
3242 !st->codec->extradata)
3244 if (st->first_dts == AV_NOPTS_VALUE &&
3245 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3246 st->codec_info_nb_frames < ic->max_ts_probe &&
3247 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3248 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
3251 analyzed_all_streams = 0;
3252 if (i == ic->nb_streams) {
3253 analyzed_all_streams = 1;
3254 /* NOTE: If the format has no header, then we need to read some
3255 * packets to get most of the streams, so we cannot stop here. */
3256 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3257 /* If we found the info for all the codecs, we can stop. */
3259 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3264 /* We did not get all the codec info, but we read too much data. */
3265 if (read_size >= probesize) {
3267 av_log(ic, AV_LOG_DEBUG,
3268 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3269 for (i = 0; i < ic->nb_streams; i++)
3270 if (!ic->streams[i]->r_frame_rate.num &&
3271 ic->streams[i]->info->duration_count <= 1 &&
3272 ic->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3273 strcmp(ic->iformat->name, "image2"))
3274 av_log(ic, AV_LOG_WARNING,
3275 "Stream #%d: not enough frames to estimate rate; "
3276 "consider increasing probesize\n", i);
3280 /* NOTE: A new stream can be added there if no header in file
3281 * (AVFMTCTX_NOHEADER). */
3282 ret = read_frame_internal(ic, &pkt1);
3283 if (ret == AVERROR(EAGAIN))
3293 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3294 ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
3295 &ic->internal->packet_buffer_end, 0);
3297 goto find_stream_info_err;
3300 st = ic->streams[pkt->stream_index];
3301 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3302 read_size += pkt->size;
3304 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3305 /* check for non-increasing dts */
3306 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3307 st->info->fps_last_dts >= pkt->dts) {
3308 av_log(ic, AV_LOG_DEBUG,
3309 "Non-increasing DTS in stream %d: packet %d with DTS "
3310 "%"PRId64", packet %d with DTS %"PRId64"\n",
3311 st->index, st->info->fps_last_dts_idx,
3312 st->info->fps_last_dts, st->codec_info_nb_frames,
3314 st->info->fps_first_dts =
3315 st->info->fps_last_dts = AV_NOPTS_VALUE;
3317 /* Check for a discontinuity in dts. If the difference in dts
3318 * is more than 1000 times the average packet duration in the
3319 * sequence, we treat it as a discontinuity. */
3320 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3321 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3322 (pkt->dts - st->info->fps_last_dts) / 1000 >
3323 (st->info->fps_last_dts - st->info->fps_first_dts) /
3324 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3325 av_log(ic, AV_LOG_WARNING,
3326 "DTS discontinuity in stream %d: packet %d with DTS "
3327 "%"PRId64", packet %d with DTS %"PRId64"\n",
3328 st->index, st->info->fps_last_dts_idx,
3329 st->info->fps_last_dts, st->codec_info_nb_frames,
3331 st->info->fps_first_dts =
3332 st->info->fps_last_dts = AV_NOPTS_VALUE;
3335 /* update stored dts values */
3336 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3337 st->info->fps_first_dts = pkt->dts;
3338 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3340 st->info->fps_last_dts = pkt->dts;
3341 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3343 if (st->codec_info_nb_frames>1) {
3347 if (st->time_base.den > 0)
3348 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3349 if (st->avg_frame_rate.num > 0)
3350 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3353 && st->codec_info_nb_frames>30
3354 && st->info->fps_first_dts != AV_NOPTS_VALUE
3355 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3356 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3358 if (analyzed_all_streams) limit = max_analyze_duration;
3359 else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3360 else limit = max_stream_analyze_duration;
3363 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3365 t, pkt->stream_index);
3366 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3367 av_packet_unref(pkt);
3370 if (pkt->duration) {
3371 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3372 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3374 st->info->codec_info_duration += pkt->duration;
3375 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3378 #if FF_API_R_FRAME_RATE
3379 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3380 ff_rfps_add_frame(ic, st, pkt->dts);
3382 if (st->parser && st->parser->parser->split && !st->codec->extradata) {
3383 int i = st->parser->parser->split(st->codec, pkt->data, pkt->size);
3384 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3385 if (ff_alloc_extradata(st->codec, i))
3386 return AVERROR(ENOMEM);
3387 memcpy(st->codec->extradata, pkt->data,
3388 st->codec->extradata_size);
3392 /* If still no information, we try to open the codec and to
3393 * decompress the frame. We try to avoid that in most cases as
3394 * it takes longer and uses more memory. For MPEG-4, we need to
3395 * decompress for QuickTime.
3397 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3398 * least one frame of codec data, this makes sure the codec initializes
3399 * the channel configuration and does not only trust the values from
3401 try_decode_frame(ic, st, pkt,
3402 (options && i < orig_nb_streams) ? &options[i] : NULL);
3404 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3405 av_packet_unref(pkt);
3407 st->codec_info_nb_frames++;
3412 AVPacket empty_pkt = { 0 };
3414 av_init_packet(&empty_pkt);
3416 for (i = 0; i < ic->nb_streams; i++) {
3418 st = ic->streams[i];
3420 /* flush the decoders */
3421 if (st->info->found_decoder == 1) {
3423 err = try_decode_frame(ic, st, &empty_pkt,
3424 (options && i < orig_nb_streams)
3425 ? &options[i] : NULL);
3426 } while (err > 0 && !has_codec_parameters(st, NULL));
3429 av_log(ic, AV_LOG_INFO,
3430 "decoding for stream %d failed\n", st->index);
3436 // close codecs which were opened in try_decode_frame()
3437 for (i = 0; i < ic->nb_streams; i++) {
3438 st = ic->streams[i];
3439 avcodec_close(st->codec);
3442 ff_rfps_calculate(ic);
3444 for (i = 0; i < ic->nb_streams; i++) {
3445 st = ic->streams[i];
3446 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3447 if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample) {
3448 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3449 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == st->codec->pix_fmt)
3450 st->codec->codec_tag= tag;
3453 /* estimate average framerate if not set by demuxer */
3454 if (st->info->codec_info_duration_fields &&
3455 !st->avg_frame_rate.num &&
3456 st->info->codec_info_duration) {
3458 double best_error = 0.01;
3460 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3461 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3462 st->info->codec_info_duration < 0)
3464 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3465 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3466 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3468 /* Round guessed framerate to a "standard" framerate if it's
3469 * within 1% of the original estimate. */
3470 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3471 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3472 double error = fabs(av_q2d(st->avg_frame_rate) /
3473 av_q2d(std_fps) - 1);
3475 if (error < best_error) {
3477 best_fps = std_fps.num;
3481 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3482 best_fps, 12 * 1001, INT_MAX);
3485 if (!st->r_frame_rate.num) {
3486 if ( st->codec->time_base.den * (int64_t) st->time_base.num
3487 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t) st->time_base.den) {
3488 st->r_frame_rate.num = st->codec->time_base.den;
3489 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3491 st->r_frame_rate.num = st->time_base.den;
3492 st->r_frame_rate.den = st->time_base.num;
3495 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3496 AVRational hw_ratio = { st->codec->height, st->codec->width };
3497 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3500 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3501 if (!st->codec->bits_per_coded_sample)
3502 st->codec->bits_per_coded_sample =
3503 av_get_bits_per_sample(st->codec->codec_id);
3504 // set stream disposition based on audio service type
3505 switch (st->codec->audio_service_type) {
3506 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3507 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3509 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3510 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3512 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3513 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
3515 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3516 st->disposition = AV_DISPOSITION_COMMENT;
3518 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3519 st->disposition = AV_DISPOSITION_KARAOKE;
3526 estimate_timings(ic, old_offset);
3528 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
3530 if (ret >= 0 && ic->nb_streams)
3531 /* We could not have all the codec parameters before EOF. */
3533 for (i = 0; i < ic->nb_streams; i++) {
3535 st = ic->streams[i];
3536 if (!has_codec_parameters(st, &errmsg)) {
3538 avcodec_string(buf, sizeof(buf), st->codec, 0);
3539 av_log(ic, AV_LOG_WARNING,
3540 "Could not find codec parameters for stream %d (%s): %s\n"
3541 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3548 compute_chapters_end(ic);
3550 find_stream_info_err:
3551 for (i = 0; i < ic->nb_streams; i++) {
3552 st = ic->streams[i];
3553 if (ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3554 ic->streams[i]->codec->thread_count = 0;
3556 av_freep(&st->info->duration_error);
3557 av_freep(&ic->streams[i]->info);
3560 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3561 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3565 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3569 for (i = 0; i < ic->nb_programs; i++) {
3570 if (ic->programs[i] == last) {
3574 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3575 if (ic->programs[i]->stream_index[j] == s)
3576 return ic->programs[i];
3582 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
3583 int wanted_stream_nb, int related_stream,
3584 AVCodec **decoder_ret, int flags)
3586 int i, nb_streams = ic->nb_streams;
3587 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3588 unsigned *program = NULL;
3589 const AVCodec *decoder = NULL, *best_decoder = NULL;
3591 if (related_stream >= 0 && wanted_stream_nb < 0) {
3592 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3594 program = p->stream_index;
3595 nb_streams = p->nb_stream_indexes;
3598 for (i = 0; i < nb_streams; i++) {
3599 int real_stream_index = program ? program[i] : i;
3600 AVStream *st = ic->streams[real_stream_index];
3601 AVCodecContext *avctx = st->codec;
3602 if (avctx->codec_type != type)
3604 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3606 if (wanted_stream_nb != real_stream_index &&
3607 st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED |
3608 AV_DISPOSITION_VISUAL_IMPAIRED))
3610 if (type == AVMEDIA_TYPE_AUDIO && !(avctx->channels && avctx->sample_rate))
3613 decoder = find_decoder(ic, st, st->codec->codec_id);
3616 ret = AVERROR_DECODER_NOT_FOUND;
3620 count = st->codec_info_nb_frames;
3621 bitrate = avctx->bit_rate;
3623 bitrate = avctx->rc_max_rate;
3624 multiframe = FFMIN(5, count);
3625 if ((best_multiframe > multiframe) ||
3626 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3627 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3630 best_bitrate = bitrate;
3631 best_multiframe = multiframe;
3632 ret = real_stream_index;
3633 best_decoder = decoder;
3634 if (program && i == nb_streams - 1 && ret < 0) {
3636 nb_streams = ic->nb_streams;
3637 /* no related stream found, try again with everything */
3642 *decoder_ret = (AVCodec*)best_decoder;
3646 /*******************************************************/
3648 int av_read_play(AVFormatContext *s)
3650 if (s->iformat->read_play)
3651 return s->iformat->read_play(s);
3653 return avio_pause(s->pb, 0);
3654 return AVERROR(ENOSYS);
3657 int av_read_pause(AVFormatContext *s)
3659 if (s->iformat->read_pause)
3660 return s->iformat->read_pause(s);
3662 return avio_pause(s->pb, 1);
3663 return AVERROR(ENOSYS);
3666 static void free_stream(AVStream **pst)
3668 AVStream *st = *pst;
3674 for (i = 0; i < st->nb_side_data; i++)
3675 av_freep(&st->side_data[i].data);
3676 av_freep(&st->side_data);
3679 av_parser_close(st->parser);
3681 if (st->attached_pic.data)
3682 av_packet_unref(&st->attached_pic);
3684 av_freep(&st->internal);
3686 av_dict_free(&st->metadata);
3687 av_freep(&st->probe_data.buf);
3688 av_freep(&st->index_entries);
3689 av_freep(&st->codec->extradata);
3690 av_freep(&st->codec->subtitle_header);
3691 av_freep(&st->codec);
3692 av_freep(&st->priv_data);
3694 av_freep(&st->info->duration_error);
3695 av_freep(&st->info);
3696 av_freep(&st->recommended_encoder_configuration);
3697 av_freep(&st->priv_pts);
3702 void ff_free_stream(AVFormatContext *s, AVStream *st)
3704 av_assert0(s->nb_streams>0);
3705 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
3707 free_stream(&s->streams[ --s->nb_streams ]);
3710 void avformat_free_context(AVFormatContext *s)
3718 if (s->iformat && s->iformat->priv_class && s->priv_data)
3719 av_opt_free(s->priv_data);
3720 if (s->oformat && s->oformat->priv_class && s->priv_data)
3721 av_opt_free(s->priv_data);
3723 for (i = s->nb_streams - 1; i >= 0; i--)
3724 ff_free_stream(s, s->streams[i]);
3727 for (i = s->nb_programs - 1; i >= 0; i--) {
3728 av_dict_free(&s->programs[i]->metadata);
3729 av_freep(&s->programs[i]->stream_index);
3730 av_freep(&s->programs[i]);
3732 av_freep(&s->programs);
3733 av_freep(&s->priv_data);
3734 while (s->nb_chapters--) {
3735 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3736 av_freep(&s->chapters[s->nb_chapters]);
3738 av_freep(&s->chapters);
3739 av_dict_free(&s->metadata);
3740 av_freep(&s->streams);
3741 av_freep(&s->internal);
3742 flush_packet_queue(s);
3746 void avformat_close_input(AVFormatContext **ps)
3757 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
3758 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3761 flush_packet_queue(s);
3764 if (s->iformat->read_close)
3765 s->iformat->read_close(s);
3767 avformat_free_context(s);
3774 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3780 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3782 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3785 s->streams = streams;
3787 st = av_mallocz(sizeof(AVStream));
3790 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3794 st->info->last_dts = AV_NOPTS_VALUE;
3796 st->codec = avcodec_alloc_context3(c);
3803 st->internal = av_mallocz(sizeof(*st->internal));
3808 /* no default bitrate if decoding */
3809 st->codec->bit_rate = 0;
3811 /* default pts setting is MPEG-like */
3812 avpriv_set_pts_info(st, 33, 1, 90000);
3813 /* we set the current DTS to 0 so that formats without any timestamps
3814 * but durations get some timestamps, formats with some unknown
3815 * timestamps have their first few packets buffered and the
3816 * timestamps corrected before they are returned to the user */
3817 st->cur_dts = RELATIVE_TS_BASE;
3819 st->cur_dts = AV_NOPTS_VALUE;
3822 st->index = s->nb_streams;
3823 st->start_time = AV_NOPTS_VALUE;
3824 st->duration = AV_NOPTS_VALUE;
3825 st->first_dts = AV_NOPTS_VALUE;
3826 st->probe_packets = MAX_PROBE_PACKETS;
3827 st->pts_wrap_reference = AV_NOPTS_VALUE;
3828 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3830 st->last_IP_pts = AV_NOPTS_VALUE;
3831 st->last_dts_for_order_check = AV_NOPTS_VALUE;
3832 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
3833 st->pts_buffer[i] = AV_NOPTS_VALUE;
3835 st->sample_aspect_ratio = (AVRational) { 0, 1 };
3837 #if FF_API_R_FRAME_RATE
3838 st->info->last_dts = AV_NOPTS_VALUE;
3840 st->info->fps_first_dts = AV_NOPTS_VALUE;
3841 st->info->fps_last_dts = AV_NOPTS_VALUE;
3843 st->inject_global_side_data = s->internal->inject_global_side_data;
3845 s->streams[s->nb_streams++] = st;
3852 AVProgram *av_new_program(AVFormatContext *ac, int id)
3854 AVProgram *program = NULL;
3857 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
3859 for (i = 0; i < ac->nb_programs; i++)
3860 if (ac->programs[i]->id == id)
3861 program = ac->programs[i];
3864 program = av_mallocz(sizeof(AVProgram));
3867 dynarray_add(&ac->programs, &ac->nb_programs, program);
3868 program->discard = AVDISCARD_NONE;
3871 program->pts_wrap_reference = AV_NOPTS_VALUE;
3872 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3874 program->start_time =
3875 program->end_time = AV_NOPTS_VALUE;
3880 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
3881 int64_t start, int64_t end, const char *title)
3883 AVChapter *chapter = NULL;
3886 if (end != AV_NOPTS_VALUE && start > end) {
3887 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
3891 for (i = 0; i < s->nb_chapters; i++)
3892 if (s->chapters[i]->id == id)
3893 chapter = s->chapters[i];
3896 chapter = av_mallocz(sizeof(AVChapter));
3899 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3901 av_dict_set(&chapter->metadata, "title", title, 0);
3903 chapter->time_base = time_base;
3904 chapter->start = start;
3910 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
3913 AVProgram *program = NULL;
3916 if (idx >= ac->nb_streams) {
3917 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3921 for (i = 0; i < ac->nb_programs; i++) {
3922 if (ac->programs[i]->id != progid)
3924 program = ac->programs[i];
3925 for (j = 0; j < program->nb_stream_indexes; j++)
3926 if (program->stream_index[j] == idx)
3929 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3932 program->stream_index = tmp;
3933 program->stream_index[program->nb_stream_indexes++] = idx;
3938 uint64_t ff_ntp_time(void)
3940 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3943 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
3946 char *q, buf1[20], c;
3947 int nd, len, percentd_found;
3959 while (av_isdigit(*p))
3960 nd = nd * 10 + *p++ - '0';
3962 } while (av_isdigit(c));
3973 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3975 if ((q - buf + len) > buf_size - 1)
3977 memcpy(q, buf1, len);
3985 if ((q - buf) < buf_size - 1)
3989 if (!percentd_found)
3998 void av_url_split(char *proto, int proto_size,
3999 char *authorization, int authorization_size,
4000 char *hostname, int hostname_size,
4001 int *port_ptr, char *path, int path_size, const char *url)
4003 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4009 if (authorization_size > 0)
4010 authorization[0] = 0;
4011 if (hostname_size > 0)
4016 /* parse protocol */
4017 if ((p = strchr(url, ':'))) {
4018 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4025 /* no protocol means plain filename */
4026 av_strlcpy(path, url, path_size);
4030 /* separate path from hostname */
4031 ls = strchr(p, '/');
4032 ls2 = strchr(p, '?');
4036 ls = FFMIN(ls, ls2);
4038 av_strlcpy(path, ls, path_size);
4040 ls = &p[strlen(p)]; // XXX
4042 /* the rest is hostname, use that to parse auth/port */
4044 /* authorization (user[:pass]@hostname) */
4046 while ((at = strchr(p, '@')) && at < ls) {
4047 av_strlcpy(authorization, at2,
4048 FFMIN(authorization_size, at + 1 - at2));
4049 p = at + 1; /* skip '@' */
4052 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4054 av_strlcpy(hostname, p + 1,
4055 FFMIN(hostname_size, brk - p));
4056 if (brk[1] == ':' && port_ptr)
4057 *port_ptr = atoi(brk + 2);
4058 } else if ((col = strchr(p, ':')) && col < ls) {
4059 av_strlcpy(hostname, p,
4060 FFMIN(col + 1 - p, hostname_size));
4062 *port_ptr = atoi(col + 1);
4064 av_strlcpy(hostname, p,
4065 FFMIN(ls + 1 - p, hostname_size));
4069 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4072 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4075 'C', 'D', 'E', 'F' };
4076 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4079 'c', 'd', 'e', 'f' };
4080 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4082 for (i = 0; i < s; i++) {
4083 buff[i * 2] = hex_table[src[i] >> 4];
4084 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4090 int ff_hex_to_data(uint8_t *data, const char *p)
4097 p += strspn(p, SPACE_CHARS);
4100 c = av_toupper((unsigned char) *p++);
4101 if (c >= '0' && c <= '9')
4103 else if (c >= 'A' && c <= 'F')
4118 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4119 unsigned int pts_num, unsigned int pts_den)
4122 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4123 if (new_tb.num != pts_num)
4124 av_log(NULL, AV_LOG_DEBUG,
4125 "st:%d removing common factor %d from timebase\n",
4126 s->index, pts_num / new_tb.num);
4128 av_log(NULL, AV_LOG_WARNING,
4129 "st:%d has too large timebase, reducing\n", s->index);
4131 if (new_tb.num <= 0 || new_tb.den <= 0) {
4132 av_log(NULL, AV_LOG_ERROR,
4133 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4134 new_tb.num, new_tb.den,
4138 s->time_base = new_tb;
4139 av_codec_set_pkt_timebase(s->codec, new_tb);
4140 s->pts_wrap_bits = pts_wrap_bits;
4143 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4146 const char *ptr = str;
4148 /* Parse key=value pairs. */
4151 char *dest = NULL, *dest_end;
4152 int key_len, dest_len = 0;
4154 /* Skip whitespace and potential commas. */
4155 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4162 if (!(ptr = strchr(key, '=')))
4165 key_len = ptr - key;
4167 callback_get_buf(context, key, key_len, &dest, &dest_len);
4168 dest_end = dest + dest_len - 1;
4172 while (*ptr && *ptr != '\"') {
4176 if (dest && dest < dest_end)
4180 if (dest && dest < dest_end)
4188 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4189 if (dest && dest < dest_end)
4197 int ff_find_stream_index(AVFormatContext *s, int id)
4200 for (i = 0; i < s->nb_streams; i++)
4201 if (s->streams[i]->id == id)
4206 int64_t ff_iso8601_to_unix_time(const char *datestr)
4208 struct tm time1 = { 0 }, time2 = { 0 };
4209 const char *ret1, *ret2;
4210 ret1 = av_small_strptime(datestr, "%Y - %m - %d %T", &time1);
4211 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%T", &time2);
4213 return av_timegm(&time2);
4215 return av_timegm(&time1);
4218 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4222 unsigned int codec_tag;
4223 if (ofmt->query_codec)
4224 return ofmt->query_codec(codec_id, std_compliance);
4225 else if (ofmt->codec_tag)
4226 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4227 else if (codec_id == ofmt->video_codec ||
4228 codec_id == ofmt->audio_codec ||
4229 codec_id == ofmt->subtitle_codec)
4232 return AVERROR_PATCHWELCOME;
4235 int avformat_network_init(void)
4239 ff_network_inited_globally = 1;
4240 if ((ret = ff_network_init()) < 0)
4242 if ((ret = ff_tls_init()) < 0)
4248 int avformat_network_deinit(void)
4253 ff_network_inited_globally = 0;
4258 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4259 uint64_t channel_layout, int32_t sample_rate,
4260 int32_t width, int32_t height)
4266 return AVERROR(EINVAL);
4269 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4271 if (channel_layout) {
4273 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4277 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4279 if (width || height) {
4281 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4283 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4285 return AVERROR(ENOMEM);
4286 bytestream_put_le32(&data, flags);
4288 bytestream_put_le32(&data, channels);
4290 bytestream_put_le64(&data, channel_layout);
4292 bytestream_put_le32(&data, sample_rate);
4293 if (width || height) {
4294 bytestream_put_le32(&data, width);
4295 bytestream_put_le32(&data, height);
4300 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4302 AVRational undef = {0, 1};
4303 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4304 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4305 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4307 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4308 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4309 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4310 stream_sample_aspect_ratio = undef;
4312 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4313 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4314 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4315 frame_sample_aspect_ratio = undef;
4317 if (stream_sample_aspect_ratio.num)
4318 return stream_sample_aspect_ratio;
4320 return frame_sample_aspect_ratio;
4323 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4325 AVRational fr = st->r_frame_rate;
4326 AVRational codec_fr = st->codec->framerate;
4327 AVRational avg_fr = st->avg_frame_rate;
4329 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4330 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4335 if (st->codec->ticks_per_frame > 1) {
4336 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4337 (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))
4344 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4347 if (*spec <= '9' && *spec >= '0') /* opt:index */
4348 return strtol(spec, NULL, 0) == st->index;
4349 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4350 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
4351 enum AVMediaType type;
4355 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4356 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4357 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4358 case 'd': type = AVMEDIA_TYPE_DATA; break;
4359 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4360 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
4361 default: av_assert0(0);
4363 if (type != st->codec->codec_type)
4365 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
4367 if (*spec++ == ':') { /* possibly followed by :index */
4368 int i, index = strtol(spec, NULL, 0);
4369 for (i = 0; i < s->nb_streams; i++)
4370 if (s->streams[i]->codec->codec_type == type &&
4371 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4373 return i == st->index;
4377 } else if (*spec == 'p' && *(spec + 1) == ':') {
4381 prog_id = strtol(spec, &endptr, 0);
4382 for (i = 0; i < s->nb_programs; i++) {
4383 if (s->programs[i]->id != prog_id)
4386 if (*endptr++ == ':') {
4387 int stream_idx = strtol(endptr, NULL, 0);
4388 return stream_idx >= 0 &&
4389 stream_idx < s->programs[i]->nb_stream_indexes &&
4390 st->index == s->programs[i]->stream_index[stream_idx];
4393 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4394 if (st->index == s->programs[i]->stream_index[j])
4398 } else if (*spec == '#' ||
4399 (*spec == 'i' && *(spec + 1) == ':')) {
4402 spec += 1 + (*spec == 'i');
4403 stream_id = strtol(spec, &endptr, 0);
4405 return stream_id == st->id;
4406 } else if (*spec == 'm' && *(spec + 1) == ':') {
4407 AVDictionaryEntry *tag;
4412 val = strchr(spec, ':');
4414 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
4416 return AVERROR(ENOMEM);
4418 tag = av_dict_get(st->metadata, key, NULL, 0);
4420 if (!val || !strcmp(tag->value, val + 1))
4429 } else if (*spec == 'u') {
4430 AVCodecContext *avctx = st->codec;
4432 switch (avctx->codec_type) {
4433 case AVMEDIA_TYPE_AUDIO:
4434 val = avctx->sample_rate && avctx->channels;
4435 if (avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
4438 case AVMEDIA_TYPE_VIDEO:
4439 val = avctx->width && avctx->height;
4440 if (avctx->pix_fmt == AV_PIX_FMT_NONE)
4443 case AVMEDIA_TYPE_UNKNOWN:
4450 return avctx->codec_id != AV_CODEC_ID_NONE && val != 0;
4451 } else if (!*spec) /* empty specifier, matches everything */
4454 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4455 return AVERROR(EINVAL);
4458 int ff_generate_avci_extradata(AVStream *st)
4460 static const uint8_t avci100_1080p_extradata[] = {
4462 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4463 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4464 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4465 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4466 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4467 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4468 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4469 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4470 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4472 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4475 static const uint8_t avci100_1080i_extradata[] = {
4477 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4478 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4479 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4480 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4481 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4482 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4483 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4484 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4485 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4486 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4487 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
4489 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4492 static const uint8_t avci50_1080p_extradata[] = {
4494 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4495 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4496 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4497 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4498 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4499 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4500 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4501 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4502 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4504 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4507 static const uint8_t avci50_1080i_extradata[] = {
4509 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4510 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4511 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4512 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4513 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4514 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4515 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4516 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4517 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4518 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4519 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4521 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4524 static const uint8_t avci100_720p_extradata[] = {
4526 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4527 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4528 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4529 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4530 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4531 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4532 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4533 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4534 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4535 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4537 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4540 static const uint8_t avci50_720p_extradata[] = {
4542 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4543 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4544 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4545 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4546 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4547 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4548 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4549 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4550 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4552 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4556 const uint8_t *data = NULL;
4559 if (st->codec->width == 1920) {
4560 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4561 data = avci100_1080p_extradata;
4562 size = sizeof(avci100_1080p_extradata);
4564 data = avci100_1080i_extradata;
4565 size = sizeof(avci100_1080i_extradata);
4567 } else if (st->codec->width == 1440) {
4568 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4569 data = avci50_1080p_extradata;
4570 size = sizeof(avci50_1080p_extradata);
4572 data = avci50_1080i_extradata;
4573 size = sizeof(avci50_1080i_extradata);
4575 } else if (st->codec->width == 1280) {
4576 data = avci100_720p_extradata;
4577 size = sizeof(avci100_720p_extradata);
4578 } else if (st->codec->width == 960) {
4579 data = avci50_720p_extradata;
4580 size = sizeof(avci50_720p_extradata);
4586 av_freep(&st->codec->extradata);
4587 if (ff_alloc_extradata(st->codec, size))
4588 return AVERROR(ENOMEM);
4589 memcpy(st->codec->extradata, data, size);
4594 uint8_t *av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type,
4599 for (i = 0; i < st->nb_side_data; i++) {
4600 if (st->side_data[i].type == type) {
4602 *size = st->side_data[i].size;
4603 return st->side_data[i].data;
4609 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
4612 AVPacketSideData *sd, *tmp;
4614 uint8_t *data = av_malloc(size);
4619 for (i = 0; i < st->nb_side_data; i++) {
4620 sd = &st->side_data[i];
4622 if (sd->type == type) {
4623 av_freep(&sd->data);
4630 tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
4636 st->side_data = tmp;
4639 sd = &st->side_data[st->nb_side_data - 1];