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;
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 AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
365 AVPacketList **plast_pktl)
367 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
372 (*plast_pktl)->next = pktl;
374 *packet_buffer = pktl;
376 /* Add the packet in the buffered packet list. */
382 int avformat_queue_attached_pictures(AVFormatContext *s)
385 for (i = 0; i < s->nb_streams; i++)
386 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
387 s->streams[i]->discard < AVDISCARD_ALL) {
388 AVPacket copy = s->streams[i]->attached_pic;
389 if (copy.size <= 0) {
390 av_log(s, AV_LOG_WARNING,
391 "Attached picture on stream %d has invalid size, "
395 copy.buf = av_buffer_ref(copy.buf);
397 return AVERROR(ENOMEM);
399 add_to_pktbuf(&s->internal->raw_packet_buffer, ©,
400 &s->internal->raw_packet_buffer_end);
405 int avformat_open_input(AVFormatContext **ps, const char *filename,
406 AVInputFormat *fmt, AVDictionary **options)
408 AVFormatContext *s = *ps;
410 AVDictionary *tmp = NULL;
411 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
413 if (!s && !(s = avformat_alloc_context()))
414 return AVERROR(ENOMEM);
416 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
417 return AVERROR(EINVAL);
423 av_dict_copy(&tmp, *options, 0);
425 if (s->pb) // must be before any goto fail
426 s->flags |= AVFMT_FLAG_CUSTOM_IO;
428 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
431 if ((ret = init_input(s, filename, &tmp)) < 0)
433 s->probe_score = ret;
435 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
436 av_log(s, AV_LOG_ERROR, "Format not on whitelist\n");
437 ret = AVERROR(EINVAL);
441 avio_skip(s->pb, s->skip_initial_bytes);
443 /* Check filename in case an image number is expected. */
444 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
445 if (!av_filename_number_test(filename)) {
446 ret = AVERROR(EINVAL);
451 s->duration = s->start_time = AV_NOPTS_VALUE;
452 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
454 /* Allocate private data. */
455 if (s->iformat->priv_data_size > 0) {
456 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
457 ret = AVERROR(ENOMEM);
460 if (s->iformat->priv_class) {
461 *(const AVClass **) s->priv_data = s->iformat->priv_class;
462 av_opt_set_defaults(s->priv_data);
463 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
468 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
470 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, 0);
472 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
473 if ((ret = s->iformat->read_header(s)) < 0)
476 if (id3v2_extra_meta) {
477 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
478 !strcmp(s->iformat->name, "tta")) {
479 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
482 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
484 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
486 if ((ret = avformat_queue_attached_pictures(s)) < 0)
489 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
490 s->internal->data_offset = avio_tell(s->pb);
492 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
495 av_dict_free(options);
502 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
504 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
506 avformat_free_context(s);
511 /*******************************************************/
513 static void force_codec_ids(AVFormatContext *s, AVStream *st)
515 switch (st->codec->codec_type) {
516 case AVMEDIA_TYPE_VIDEO:
517 if (s->video_codec_id)
518 st->codec->codec_id = s->video_codec_id;
520 case AVMEDIA_TYPE_AUDIO:
521 if (s->audio_codec_id)
522 st->codec->codec_id = s->audio_codec_id;
524 case AVMEDIA_TYPE_SUBTITLE:
525 if (s->subtitle_codec_id)
526 st->codec->codec_id = s->subtitle_codec_id;
531 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
533 if (st->request_probe>0) {
534 AVProbeData *pd = &st->probe_data;
536 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
540 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
542 av_log(s, AV_LOG_WARNING,
543 "Failed to reallocate probe buffer for stream %d\n",
548 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
549 pd->buf_size += pkt->size;
550 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
553 st->probe_packets = 0;
555 av_log(s, AV_LOG_WARNING,
556 "nothing to probe for stream %d\n", st->index);
560 end= s->internal->raw_packet_buffer_remaining_size <= 0
561 || st->probe_packets<= 0;
563 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
564 int score = set_codec_from_probe_data(s, st, pd);
565 if ( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
569 st->request_probe = -1;
570 if (st->codec->codec_id != AV_CODEC_ID_NONE) {
571 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
573 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
575 force_codec_ids(s, st);
581 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
583 int64_t ref = pkt->dts;
584 int i, pts_wrap_behavior;
585 int64_t pts_wrap_reference;
586 AVProgram *first_program;
588 if (ref == AV_NOPTS_VALUE)
590 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
592 ref &= (1LL << st->pts_wrap_bits)-1;
594 // reference time stamp should be 60 s before first time stamp
595 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
596 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
597 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
598 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
599 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
601 first_program = av_find_program_from_stream(s, NULL, stream_index);
603 if (!first_program) {
604 int default_stream_index = av_find_default_stream_index(s);
605 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
606 for (i = 0; i < s->nb_streams; i++) {
607 if (av_find_program_from_stream(s, NULL, i))
609 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
610 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
614 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
615 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
619 AVProgram *program = first_program;
621 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
622 pts_wrap_reference = program->pts_wrap_reference;
623 pts_wrap_behavior = program->pts_wrap_behavior;
626 program = av_find_program_from_stream(s, program, stream_index);
629 // update every program with differing pts_wrap_reference
630 program = first_program;
632 if (program->pts_wrap_reference != pts_wrap_reference) {
633 for (i = 0; i<program->nb_stream_indexes; i++) {
634 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
635 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
638 program->pts_wrap_reference = pts_wrap_reference;
639 program->pts_wrap_behavior = pts_wrap_behavior;
641 program = av_find_program_from_stream(s, program, stream_index);
647 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
653 AVPacketList *pktl = s->internal->raw_packet_buffer;
657 st = s->streams[pkt->stream_index];
658 if (s->internal->raw_packet_buffer_remaining_size <= 0)
659 if ((err = probe_codec(s, st, NULL)) < 0)
661 if (st->request_probe <= 0) {
662 s->internal->raw_packet_buffer = pktl->next;
663 s->internal->raw_packet_buffer_remaining_size += pkt->size;
672 ret = s->iformat->read_packet(s, pkt);
674 if (!pktl || ret == AVERROR(EAGAIN))
676 for (i = 0; i < s->nb_streams; i++) {
678 if (st->probe_packets)
679 if ((err = probe_codec(s, st, NULL)) < 0)
681 av_assert0(st->request_probe <= 0);
686 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
687 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
688 av_log(s, AV_LOG_WARNING,
689 "Dropped corrupted packet (stream = %d)\n",
695 if (pkt->stream_index >= (unsigned)s->nb_streams) {
696 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
700 st = s->streams[pkt->stream_index];
702 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
703 // correct first time stamps to negative values
704 if (!is_relative(st->first_dts))
705 st->first_dts = wrap_timestamp(st, st->first_dts);
706 if (!is_relative(st->start_time))
707 st->start_time = wrap_timestamp(st, st->start_time);
708 if (!is_relative(st->cur_dts))
709 st->cur_dts = wrap_timestamp(st, st->cur_dts);
712 pkt->dts = wrap_timestamp(st, pkt->dts);
713 pkt->pts = wrap_timestamp(st, pkt->pts);
715 force_codec_ids(s, st);
717 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
718 if (s->use_wallclock_as_timestamps)
719 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
721 if (!pktl && st->request_probe <= 0)
724 add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
725 &s->internal->raw_packet_buffer_end);
726 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
728 if ((err = probe_codec(s, st, pkt)) < 0)
734 /**********************************************************/
736 static int determinable_frame_size(AVCodecContext *avctx)
738 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
739 avctx->codec_id == AV_CODEC_ID_MP1 ||
740 avctx->codec_id == AV_CODEC_ID_MP2 ||
741 avctx->codec_id == AV_CODEC_ID_MP3/* ||
742 avctx->codec_id == AV_CODEC_ID_CELT*/)
748 * Return the frame duration in seconds. Return 0 if not available.
750 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
751 AVCodecParserContext *pc, AVPacket *pkt)
753 AVRational codec_framerate = s->iformat ? st->codec->framerate :
754 av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
759 switch (st->codec->codec_type) {
760 case AVMEDIA_TYPE_VIDEO:
761 if (st->r_frame_rate.num && !pc && s->iformat) {
762 *pnum = st->r_frame_rate.den;
763 *pden = st->r_frame_rate.num;
764 } else if (st->time_base.num * 1000LL > st->time_base.den) {
765 *pnum = st->time_base.num;
766 *pden = st->time_base.den;
767 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
768 av_assert0(st->codec->ticks_per_frame);
769 av_reduce(pnum, pden,
771 codec_framerate.num * (int64_t)st->codec->ticks_per_frame,
774 if (pc && pc->repeat_pict) {
775 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
776 av_reduce(pnum, pden,
777 (*pnum) * (1LL + pc->repeat_pict),
781 /* If this codec can be interlaced or progressive then we need
782 * a parser to compute duration of a packet. Thus if we have
783 * no parser in such case leave duration undefined. */
784 if (st->codec->ticks_per_frame > 1 && !pc)
788 case AVMEDIA_TYPE_AUDIO:
789 frame_size = av_get_audio_frame_duration(st->codec, pkt->size);
790 if (frame_size <= 0 || st->codec->sample_rate <= 0)
793 *pden = st->codec->sample_rate;
800 static int is_intra_only(AVCodecContext *enc) {
801 const AVCodecDescriptor *desc;
803 if (enc->codec_type != AVMEDIA_TYPE_VIDEO)
806 desc = av_codec_get_codec_descriptor(enc);
808 desc = avcodec_descriptor_get(enc->codec_id);
809 av_codec_set_codec_descriptor(enc, desc);
812 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
816 static int has_decode_delay_been_guessed(AVStream *st)
818 if (st->codec->codec_id != AV_CODEC_ID_H264) return 1;
819 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
821 #if CONFIG_H264_DECODER
822 if (st->codec->has_b_frames &&
823 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
826 if (st->codec->has_b_frames<3)
827 return st->nb_decoded_frames >= 7;
828 else if (st->codec->has_b_frames<4)
829 return st->nb_decoded_frames >= 18;
831 return st->nb_decoded_frames >= 20;
834 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
838 if (pktl == s->internal->packet_buffer_end)
839 return s->internal->parse_queue;
843 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
844 int onein_oneout = st->codec->codec_id != AV_CODEC_ID_H264 &&
845 st->codec->codec_id != AV_CODEC_ID_HEVC;
848 int delay = st->codec->has_b_frames;
851 if (dts == AV_NOPTS_VALUE) {
852 int64_t best_score = INT64_MAX;
853 for (i = 0; i<delay; i++) {
854 if (st->pts_reorder_error_count[i]) {
855 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
856 if (score < best_score) {
863 for (i = 0; i<delay; i++) {
864 if (pts_buffer[i] != AV_NOPTS_VALUE) {
865 int64_t diff = FFABS(pts_buffer[i] - dts)
866 + (uint64_t)st->pts_reorder_error[i];
867 diff = FFMAX(diff, st->pts_reorder_error[i]);
868 st->pts_reorder_error[i] = diff;
869 st->pts_reorder_error_count[i]++;
870 if (st->pts_reorder_error_count[i] > 250) {
871 st->pts_reorder_error[i] >>= 1;
872 st->pts_reorder_error_count[i] >>= 1;
879 if (dts == AV_NOPTS_VALUE)
885 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
886 int64_t dts, int64_t pts, AVPacket *pkt)
888 AVStream *st = s->streams[stream_index];
889 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
890 int64_t pts_buffer[MAX_REORDER_DELAY+1];
894 if (st->first_dts != AV_NOPTS_VALUE ||
895 dts == AV_NOPTS_VALUE ||
896 st->cur_dts == AV_NOPTS_VALUE ||
900 delay = st->codec->has_b_frames;
901 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
903 shift = st->first_dts - RELATIVE_TS_BASE;
905 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
906 pts_buffer[i] = AV_NOPTS_VALUE;
908 if (is_relative(pts))
911 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
912 if (pktl->pkt.stream_index != stream_index)
914 if (is_relative(pktl->pkt.pts))
915 pktl->pkt.pts += shift;
917 if (is_relative(pktl->pkt.dts))
918 pktl->pkt.dts += shift;
920 if (st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
921 st->start_time = pktl->pkt.pts;
923 if (pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)) {
924 pts_buffer[0] = pktl->pkt.pts;
925 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
926 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
928 pktl->pkt.dts = select_from_pts_buffer(st, pts_buffer, pktl->pkt.dts);
932 if (st->start_time == AV_NOPTS_VALUE)
933 st->start_time = pts;
936 static void update_initial_durations(AVFormatContext *s, AVStream *st,
937 int stream_index, int duration)
939 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
940 int64_t cur_dts = RELATIVE_TS_BASE;
942 if (st->first_dts != AV_NOPTS_VALUE) {
943 if (st->update_initial_durations_done)
945 st->update_initial_durations_done = 1;
946 cur_dts = st->first_dts;
947 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
948 if (pktl->pkt.stream_index == stream_index) {
949 if (pktl->pkt.pts != pktl->pkt.dts ||
950 pktl->pkt.dts != AV_NOPTS_VALUE ||
956 if (pktl && pktl->pkt.dts != st->first_dts) {
957 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
958 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
962 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
965 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
966 st->first_dts = cur_dts;
967 } else if (st->cur_dts != RELATIVE_TS_BASE)
970 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
971 if (pktl->pkt.stream_index != stream_index)
973 if (pktl->pkt.pts == pktl->pkt.dts &&
974 (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts) &&
975 !pktl->pkt.duration) {
976 pktl->pkt.dts = cur_dts;
977 if (!st->codec->has_b_frames)
978 pktl->pkt.pts = cur_dts;
979 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
980 pktl->pkt.duration = duration;
983 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
986 st->cur_dts = cur_dts;
989 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
990 AVCodecParserContext *pc, AVPacket *pkt,
991 int64_t next_dts, int64_t next_pts)
993 int num, den, presentation_delayed, delay, i;
996 int onein_oneout = st->codec->codec_id != AV_CODEC_ID_H264 &&
997 st->codec->codec_id != AV_CODEC_ID_HEVC;
999 if (s->flags & AVFMT_FLAG_NOFILLIN)
1002 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1003 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1004 if (st->last_dts_for_order_check <= pkt->dts) {
1007 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1008 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1010 st->last_dts_for_order_check);
1011 st->dts_misordered++;
1013 if (st->dts_ordered + st->dts_misordered > 250) {
1014 st->dts_ordered >>= 1;
1015 st->dts_misordered >>= 1;
1019 st->last_dts_for_order_check = pkt->dts;
1020 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1021 pkt->dts = AV_NOPTS_VALUE;
1024 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1025 pkt->dts = AV_NOPTS_VALUE;
1027 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1028 && !st->codec->has_b_frames)
1029 //FIXME Set low_delay = 0 when has_b_frames = 1
1030 st->codec->has_b_frames = 1;
1032 /* do we have a video B-frame ? */
1033 delay = st->codec->has_b_frames;
1034 presentation_delayed = 0;
1036 /* XXX: need has_b_frame, but cannot get it if the codec is
1037 * not initialized */
1039 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1040 presentation_delayed = 1;
1042 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1043 st->pts_wrap_bits < 63 &&
1044 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1045 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1046 pkt->dts -= 1LL << st->pts_wrap_bits;
1048 pkt->pts += 1LL << st->pts_wrap_bits;
1051 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1052 * We take the conservative approach and discard both.
1053 * Note: If this is misbehaving for an H.264 file, then possibly
1054 * presentation_delayed is not set correctly. */
1055 if (delay == 1 && pkt->dts == pkt->pts &&
1056 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1057 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1058 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1059 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1060 pkt->dts = AV_NOPTS_VALUE;
1063 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1064 if (pkt->duration == 0) {
1065 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1067 duration = (AVRational) {num, den};
1068 pkt->duration = av_rescale_rnd(1,
1069 num * (int64_t) st->time_base.den,
1070 den * (int64_t) st->time_base.num,
1075 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1076 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1078 /* Correct timestamps with byte offset if demuxers only have timestamps
1079 * on packet boundaries */
1080 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1081 /* this will estimate bitrate based on this frame's duration and size */
1082 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1083 if (pkt->pts != AV_NOPTS_VALUE)
1085 if (pkt->dts != AV_NOPTS_VALUE)
1089 /* This may be redundant, but it should not hurt. */
1090 if (pkt->dts != AV_NOPTS_VALUE &&
1091 pkt->pts != AV_NOPTS_VALUE &&
1092 pkt->pts > pkt->dts)
1093 presentation_delayed = 1;
1095 if (s->debug & FF_FDEBUG_TS)
1096 av_log(s, AV_LOG_TRACE,
1097 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d delay:%d onein_oneout:%d\n",
1098 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1099 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1101 /* Interpolate PTS and DTS if they are not present. We skip H264
1102 * currently because delay and has_b_frames are not reliably set. */
1103 if ((delay == 0 || (delay == 1 && pc)) &&
1105 if (presentation_delayed) {
1106 /* DTS = decompression timestamp */
1107 /* PTS = presentation timestamp */
1108 if (pkt->dts == AV_NOPTS_VALUE)
1109 pkt->dts = st->last_IP_pts;
1110 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1111 if (pkt->dts == AV_NOPTS_VALUE)
1112 pkt->dts = st->cur_dts;
1114 /* This is tricky: the dts must be incremented by the duration
1115 * of the frame we are displaying, i.e. the last I- or P-frame. */
1116 if (st->last_IP_duration == 0)
1117 st->last_IP_duration = pkt->duration;
1118 if (pkt->dts != AV_NOPTS_VALUE)
1119 st->cur_dts = pkt->dts + st->last_IP_duration;
1120 if (pkt->dts != AV_NOPTS_VALUE &&
1121 pkt->pts == AV_NOPTS_VALUE &&
1122 st->last_IP_duration > 0 &&
1123 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1124 next_dts != next_pts &&
1125 next_pts != AV_NOPTS_VALUE)
1126 pkt->pts = next_dts;
1128 st->last_IP_duration = pkt->duration;
1129 st->last_IP_pts = pkt->pts;
1130 /* Cannot compute PTS if not present (we can compute it only
1131 * by knowing the future. */
1132 } else if (pkt->pts != AV_NOPTS_VALUE ||
1133 pkt->dts != AV_NOPTS_VALUE ||
1136 /* presentation is not delayed : PTS and DTS are the same */
1137 if (pkt->pts == AV_NOPTS_VALUE)
1138 pkt->pts = pkt->dts;
1139 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1141 if (pkt->pts == AV_NOPTS_VALUE)
1142 pkt->pts = st->cur_dts;
1143 pkt->dts = pkt->pts;
1144 if (pkt->pts != AV_NOPTS_VALUE)
1145 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1149 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)) {
1150 st->pts_buffer[0] = pkt->pts;
1151 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1152 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1154 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1156 // We skipped it above so we try here.
1158 // This should happen on the first packet
1159 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1160 if (pkt->dts > st->cur_dts)
1161 st->cur_dts = pkt->dts;
1163 if (s->debug & FF_FDEBUG_TS)
1164 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1165 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1168 if (is_intra_only(st->codec))
1169 pkt->flags |= AV_PKT_FLAG_KEY;
1171 pkt->convergence_duration = pc->convergence_duration;
1174 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1177 AVPacketList *pktl = *pkt_buf;
1178 *pkt_buf = pktl->next;
1179 av_free_packet(&pktl->pkt);
1182 *pkt_buf_end = NULL;
1186 * Parse a packet, add all split parts to parse_queue.
1188 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1190 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1192 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1193 AVStream *st = s->streams[stream_index];
1194 uint8_t *data = pkt ? pkt->data : NULL;
1195 int size = pkt ? pkt->size : 0;
1196 int ret = 0, got_output = 0;
1199 av_init_packet(&flush_pkt);
1202 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1203 // preserve 0-size sync packets
1204 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1207 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1209 int64_t next_pts = pkt->pts;
1210 int64_t next_dts = pkt->dts;
1212 av_init_packet(&out_pkt);
1213 len = av_parser_parse2(st->parser, st->codec,
1214 &out_pkt.data, &out_pkt.size, data, size,
1215 pkt->pts, pkt->dts, pkt->pos);
1217 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1219 /* increment read pointer */
1223 got_output = !!out_pkt.size;
1228 if (pkt->side_data) {
1229 out_pkt.side_data = pkt->side_data;
1230 out_pkt.side_data_elems = pkt->side_data_elems;
1231 pkt->side_data = NULL;
1232 pkt->side_data_elems = 0;
1235 /* set the duration */
1236 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1237 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1238 if (st->codec->sample_rate > 0) {
1240 av_rescale_q_rnd(st->parser->duration,
1241 (AVRational) { 1, st->codec->sample_rate },
1247 out_pkt.stream_index = st->index;
1248 out_pkt.pts = st->parser->pts;
1249 out_pkt.dts = st->parser->dts;
1250 out_pkt.pos = st->parser->pos;
1252 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1253 out_pkt.pos = st->parser->frame_offset;
1255 if (st->parser->key_frame == 1 ||
1256 (st->parser->key_frame == -1 &&
1257 st->parser->pict_type == AV_PICTURE_TYPE_I))
1258 out_pkt.flags |= AV_PKT_FLAG_KEY;
1260 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1261 out_pkt.flags |= AV_PKT_FLAG_KEY;
1263 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1265 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1266 out_pkt.buf = pkt->buf;
1268 #if FF_API_DESTRUCT_PACKET
1269 FF_DISABLE_DEPRECATION_WARNINGS
1270 out_pkt.destruct = pkt->destruct;
1271 pkt->destruct = NULL;
1272 FF_ENABLE_DEPRECATION_WARNINGS
1275 if ((ret = av_dup_packet(&out_pkt)) < 0)
1278 if (!add_to_pktbuf(&s->internal->parse_queue, &out_pkt, &s->internal->parse_queue_end)) {
1279 av_free_packet(&out_pkt);
1280 ret = AVERROR(ENOMEM);
1285 /* end of the stream => close and free the parser */
1286 if (pkt == &flush_pkt) {
1287 av_parser_close(st->parser);
1292 av_free_packet(pkt);
1296 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1297 AVPacketList **pkt_buffer_end,
1301 av_assert0(*pkt_buffer);
1304 *pkt_buffer = pktl->next;
1306 *pkt_buffer_end = NULL;
1311 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1313 return av_rescale(ts, st->time_base.num * st->codec->sample_rate, st->time_base.den);
1316 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1318 int ret = 0, i, got_packet = 0;
1319 AVDictionary *metadata = NULL;
1321 av_init_packet(pkt);
1323 while (!got_packet && !s->internal->parse_queue) {
1327 /* read next packet */
1328 ret = ff_read_packet(s, &cur_pkt);
1330 if (ret == AVERROR(EAGAIN))
1332 /* flush the parsers */
1333 for (i = 0; i < s->nb_streams; i++) {
1335 if (st->parser && st->need_parsing)
1336 parse_packet(s, NULL, st->index);
1338 /* all remaining packets are now in parse_queue =>
1339 * really terminate parsing */
1343 st = s->streams[cur_pkt.stream_index];
1345 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1346 cur_pkt.dts != AV_NOPTS_VALUE &&
1347 cur_pkt.pts < cur_pkt.dts) {
1348 av_log(s, AV_LOG_WARNING,
1349 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1350 cur_pkt.stream_index,
1351 av_ts2str(cur_pkt.pts),
1352 av_ts2str(cur_pkt.dts),
1355 if (s->debug & FF_FDEBUG_TS)
1356 av_log(s, AV_LOG_DEBUG,
1357 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1358 cur_pkt.stream_index,
1359 av_ts2str(cur_pkt.pts),
1360 av_ts2str(cur_pkt.dts),
1361 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1363 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1364 st->parser = av_parser_init(st->codec->codec_id);
1366 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1367 "%s, packets or times may be invalid.\n",
1368 avcodec_get_name(st->codec->codec_id));
1369 /* no parser available: just output the raw packets */
1370 st->need_parsing = AVSTREAM_PARSE_NONE;
1371 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1372 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1373 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1374 st->parser->flags |= PARSER_FLAG_ONCE;
1375 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1376 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1379 if (!st->need_parsing || !st->parser) {
1380 /* no parsing needed: we just output the packet as is */
1382 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1383 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1384 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1385 ff_reduce_index(s, st->index);
1386 av_add_index_entry(st, pkt->pos, pkt->dts,
1387 0, 0, AVINDEX_KEYFRAME);
1390 } else if (st->discard < AVDISCARD_ALL) {
1391 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1395 av_free_packet(&cur_pkt);
1397 if (pkt->flags & AV_PKT_FLAG_KEY)
1398 st->skip_to_keyframe = 0;
1399 if (st->skip_to_keyframe) {
1400 av_free_packet(&cur_pkt);
1408 if (!got_packet && s->internal->parse_queue)
1409 ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1412 AVStream *st = s->streams[pkt->stream_index];
1413 int discard_padding = 0;
1414 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1415 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1416 int64_t sample = ts_to_samples(st, pts);
1417 int duration = ts_to_samples(st, pkt->duration);
1418 int64_t end_sample = sample + duration;
1419 if (duration > 0 && end_sample >= st->first_discard_sample &&
1420 sample < st->last_discard_sample)
1421 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1423 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1424 st->skip_samples = st->start_skip_samples;
1425 if (st->skip_samples || discard_padding) {
1426 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1428 AV_WL32(p, st->skip_samples);
1429 AV_WL32(p + 4, discard_padding);
1430 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1432 st->skip_samples = 0;
1435 if (st->inject_global_side_data) {
1436 for (i = 0; i < st->nb_side_data; i++) {
1437 AVPacketSideData *src_sd = &st->side_data[i];
1440 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1443 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1445 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1449 memcpy(dst_data, src_sd->data, src_sd->size);
1451 st->inject_global_side_data = 0;
1454 if (!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1455 av_packet_merge_side_data(pkt);
1458 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1460 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1461 av_dict_copy(&s->metadata, metadata, 0);
1462 av_dict_free(&metadata);
1463 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1466 if (s->debug & FF_FDEBUG_TS)
1467 av_log(s, AV_LOG_DEBUG,
1468 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1469 "size=%d, duration=%d, flags=%d\n",
1471 av_ts2str(pkt->pts),
1472 av_ts2str(pkt->dts),
1473 pkt->size, pkt->duration, pkt->flags);
1478 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1480 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1486 ret = s->internal->packet_buffer
1487 ? read_from_packet_buffer(&s->internal->packet_buffer,
1488 &s->internal->packet_buffer_end, pkt)
1489 : read_frame_internal(s, pkt);
1496 AVPacketList *pktl = s->internal->packet_buffer;
1499 AVPacket *next_pkt = &pktl->pkt;
1501 if (next_pkt->dts != AV_NOPTS_VALUE) {
1502 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1503 // last dts seen for this stream. if any of packets following
1504 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1505 int64_t last_dts = next_pkt->dts;
1506 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1507 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1508 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1509 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) {
1511 next_pkt->pts = pktl->pkt.dts;
1513 if (last_dts != AV_NOPTS_VALUE) {
1514 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1515 last_dts = pktl->pkt.dts;
1520 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1521 // Fixing the last reference frame had none pts issue (For MXF etc).
1522 // We only do this when
1524 // 2. we are not able to resolve a pts value for current packet.
1525 // 3. the packets for this stream at the end of the files had valid dts.
1526 next_pkt->pts = last_dts + next_pkt->duration;
1528 pktl = s->internal->packet_buffer;
1531 /* read packet from packet buffer, if there is data */
1532 st = s->streams[next_pkt->stream_index];
1533 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1534 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1535 ret = read_from_packet_buffer(&s->internal->packet_buffer,
1536 &s->internal->packet_buffer_end, pkt);
1541 ret = read_frame_internal(s, pkt);
1543 if (pktl && ret != AVERROR(EAGAIN)) {
1550 if (av_dup_packet(add_to_pktbuf(&s->internal->packet_buffer, pkt,
1551 &s->internal->packet_buffer_end)) < 0)
1552 return AVERROR(ENOMEM);
1557 st = s->streams[pkt->stream_index];
1558 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1559 ff_reduce_index(s, st->index);
1560 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1563 if (is_relative(pkt->dts))
1564 pkt->dts -= RELATIVE_TS_BASE;
1565 if (is_relative(pkt->pts))
1566 pkt->pts -= RELATIVE_TS_BASE;
1571 /* XXX: suppress the packet queue */
1572 static void flush_packet_queue(AVFormatContext *s)
1576 free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
1577 free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1578 free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1580 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1583 /*******************************************************/
1586 int av_find_default_stream_index(AVFormatContext *s)
1590 int best_stream = 0;
1591 int best_score = INT_MIN;
1593 if (s->nb_streams <= 0)
1595 for (i = 0; i < s->nb_streams; i++) {
1598 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1599 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1601 if (st->codec->width && st->codec->height)
1605 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1606 if (st->codec->sample_rate)
1609 if (st->codec_info_nb_frames)
1612 if (st->discard != AVDISCARD_ALL)
1615 if (score > best_score) {
1623 /** Flush the frame reader. */
1624 void ff_read_frame_flush(AVFormatContext *s)
1629 flush_packet_queue(s);
1631 /* Reset read state for each stream. */
1632 for (i = 0; i < s->nb_streams; i++) {
1636 av_parser_close(st->parser);
1639 st->last_IP_pts = AV_NOPTS_VALUE;
1640 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1641 if (st->first_dts == AV_NOPTS_VALUE)
1642 st->cur_dts = RELATIVE_TS_BASE;
1644 /* We set the current DTS to an unspecified origin. */
1645 st->cur_dts = AV_NOPTS_VALUE;
1647 st->probe_packets = MAX_PROBE_PACKETS;
1649 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1650 st->pts_buffer[j] = AV_NOPTS_VALUE;
1652 if (s->internal->inject_global_side_data)
1653 st->inject_global_side_data = 1;
1655 st->skip_samples = 0;
1659 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1663 for (i = 0; i < s->nb_streams; i++) {
1664 AVStream *st = s->streams[i];
1667 av_rescale(timestamp,
1668 st->time_base.den * (int64_t) ref_st->time_base.num,
1669 st->time_base.num * (int64_t) ref_st->time_base.den);
1673 void ff_reduce_index(AVFormatContext *s, int stream_index)
1675 AVStream *st = s->streams[stream_index];
1676 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1678 if ((unsigned) st->nb_index_entries >= max_entries) {
1680 for (i = 0; 2 * i < st->nb_index_entries; i++)
1681 st->index_entries[i] = st->index_entries[2 * i];
1682 st->nb_index_entries = i;
1686 int ff_add_index_entry(AVIndexEntry **index_entries,
1687 int *nb_index_entries,
1688 unsigned int *index_entries_allocated_size,
1689 int64_t pos, int64_t timestamp,
1690 int size, int distance, int flags)
1692 AVIndexEntry *entries, *ie;
1695 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1698 if (timestamp == AV_NOPTS_VALUE)
1699 return AVERROR(EINVAL);
1701 if (size < 0 || size > 0x3FFFFFFF)
1702 return AVERROR(EINVAL);
1704 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1705 timestamp -= RELATIVE_TS_BASE;
1707 entries = av_fast_realloc(*index_entries,
1708 index_entries_allocated_size,
1709 (*nb_index_entries + 1) *
1710 sizeof(AVIndexEntry));
1714 *index_entries = entries;
1716 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1717 timestamp, AVSEEK_FLAG_ANY);
1720 index = (*nb_index_entries)++;
1721 ie = &entries[index];
1722 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1724 ie = &entries[index];
1725 if (ie->timestamp != timestamp) {
1726 if (ie->timestamp <= timestamp)
1728 memmove(entries + index + 1, entries + index,
1729 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1730 (*nb_index_entries)++;
1731 } else if (ie->pos == pos && distance < ie->min_distance)
1732 // do not reduce the distance
1733 distance = ie->min_distance;
1737 ie->timestamp = timestamp;
1738 ie->min_distance = distance;
1745 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
1746 int size, int distance, int flags)
1748 timestamp = wrap_timestamp(st, timestamp);
1749 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1750 &st->index_entries_allocated_size, pos,
1751 timestamp, size, distance, flags);
1754 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1755 int64_t wanted_timestamp, int flags)
1763 // Optimize appending index entries at the end.
1764 if (b && entries[b - 1].timestamp < wanted_timestamp)
1769 timestamp = entries[m].timestamp;
1770 if (timestamp >= wanted_timestamp)
1772 if (timestamp <= wanted_timestamp)
1775 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1777 if (!(flags & AVSEEK_FLAG_ANY))
1778 while (m >= 0 && m < nb_entries &&
1779 !(entries[m].flags & AVINDEX_KEYFRAME))
1780 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1782 if (m == nb_entries)
1787 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
1790 int64_t pos_delta = 0;
1792 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
1793 const char *proto = avio_find_protocol_name(s->filename);
1796 av_log(s, AV_LOG_INFO,
1797 "Protocol name not provided, cannot determine if input is local or "
1798 "a network protocol, buffers and access patterns cannot be configured "
1799 "optimally without knowing the protocol\n");
1802 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
1805 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
1806 AVStream *st1 = s->streams[ist1];
1807 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
1808 AVStream *st2 = s->streams[ist2];
1814 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
1815 AVIndexEntry *e1 = &st1->index_entries[i1];
1816 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
1818 skip = FFMAX(skip, e1->size);
1819 for (; i2 < st2->nb_index_entries; i2++) {
1820 AVIndexEntry *e2 = &st2->index_entries[i2];
1821 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
1822 if (e2_pts - e1_pts < time_tolerance)
1824 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
1832 /* XXX This could be adjusted depending on protocol*/
1833 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
1834 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
1835 ffio_set_buf_size(s->pb, pos_delta);
1836 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
1839 if (skip < (1<<23)) {
1840 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
1844 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
1846 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1847 wanted_timestamp, flags);
1850 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1851 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1853 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1854 if (stream_index >= 0)
1855 ts = wrap_timestamp(s->streams[stream_index], ts);
1859 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
1860 int64_t target_ts, int flags)
1862 AVInputFormat *avif = s->iformat;
1863 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1864 int64_t ts_min, ts_max, ts;
1869 if (stream_index < 0)
1872 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1875 ts_min = AV_NOPTS_VALUE;
1876 pos_limit = -1; // GCC falsely says it may be uninitialized.
1878 st = s->streams[stream_index];
1879 if (st->index_entries) {
1882 /* FIXME: Whole function must be checked for non-keyframe entries in
1883 * index case, especially read_timestamp(). */
1884 index = av_index_search_timestamp(st, target_ts,
1885 flags | AVSEEK_FLAG_BACKWARD);
1886 index = FFMAX(index, 0);
1887 e = &st->index_entries[index];
1889 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
1891 ts_min = e->timestamp;
1892 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1893 pos_min, av_ts2str(ts_min));
1895 av_assert1(index == 0);
1898 index = av_index_search_timestamp(st, target_ts,
1899 flags & ~AVSEEK_FLAG_BACKWARD);
1900 av_assert0(index < st->nb_index_entries);
1902 e = &st->index_entries[index];
1903 av_assert1(e->timestamp >= target_ts);
1905 ts_max = e->timestamp;
1906 pos_limit = pos_max - e->min_distance;
1907 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
1908 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
1912 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
1913 ts_min, ts_max, flags, &ts, avif->read_timestamp);
1918 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1921 ff_read_frame_flush(s);
1922 ff_update_cur_dts(s, st, ts);
1927 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1928 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1930 int64_t step = 1024;
1931 int64_t limit, ts_max;
1932 int64_t filesize = avio_size(s->pb);
1933 int64_t pos_max = filesize - 1;
1936 pos_max = FFMAX(0, (pos_max) - step);
1937 ts_max = ff_read_timestamp(s, stream_index,
1938 &pos_max, limit, read_timestamp);
1940 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
1941 if (ts_max == AV_NOPTS_VALUE)
1945 int64_t tmp_pos = pos_max + 1;
1946 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
1947 &tmp_pos, INT64_MAX, read_timestamp);
1948 if (tmp_ts == AV_NOPTS_VALUE)
1950 av_assert0(tmp_pos > pos_max);
1953 if (tmp_pos >= filesize)
1965 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1966 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1967 int64_t ts_min, int64_t ts_max,
1968 int flags, int64_t *ts_ret,
1969 int64_t (*read_timestamp)(struct AVFormatContext *, int,
1970 int64_t *, int64_t))
1977 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1979 if (ts_min == AV_NOPTS_VALUE) {
1980 pos_min = s->internal->data_offset;
1981 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1982 if (ts_min == AV_NOPTS_VALUE)
1986 if (ts_min >= target_ts) {
1991 if (ts_max == AV_NOPTS_VALUE) {
1992 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1994 pos_limit = pos_max;
1997 if (ts_max <= target_ts) {
2002 av_assert0(ts_min < ts_max);
2005 while (pos_min < pos_limit) {
2006 av_log(s, AV_LOG_TRACE,
2007 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2008 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2009 av_assert0(pos_limit <= pos_max);
2011 if (no_change == 0) {
2012 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2013 // interpolate position (better than dichotomy)
2014 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2016 pos_min - approximate_keyframe_distance;
2017 } else if (no_change == 1) {
2018 // bisection if interpolation did not change min / max pos last time
2019 pos = (pos_min + pos_limit) >> 1;
2021 /* linear search if bisection failed, can only happen if there
2022 * are very few or no keyframes between min/max */
2027 else if (pos > pos_limit)
2031 // May pass pos_limit instead of -1.
2032 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2037 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2038 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2039 pos_min, pos, pos_max,
2040 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2041 pos_limit, start_pos, no_change);
2042 if (ts == AV_NOPTS_VALUE) {
2043 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2046 if (target_ts <= ts) {
2047 pos_limit = start_pos - 1;
2051 if (target_ts >= ts) {
2057 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2058 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2061 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2063 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2064 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2065 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2071 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2072 int64_t pos, int flags)
2074 int64_t pos_min, pos_max;
2076 pos_min = s->internal->data_offset;
2077 pos_max = avio_size(s->pb) - 1;
2081 else if (pos > pos_max)
2084 avio_seek(s->pb, pos, SEEK_SET);
2086 s->io_repositioned = 1;
2091 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2092 int64_t timestamp, int flags)
2099 st = s->streams[stream_index];
2101 index = av_index_search_timestamp(st, timestamp, flags);
2103 if (index < 0 && st->nb_index_entries &&
2104 timestamp < st->index_entries[0].timestamp)
2107 if (index < 0 || index == st->nb_index_entries - 1) {
2111 if (st->nb_index_entries) {
2112 av_assert0(st->index_entries);
2113 ie = &st->index_entries[st->nb_index_entries - 1];
2114 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2116 ff_update_cur_dts(s, st, ie->timestamp);
2118 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2124 read_status = av_read_frame(s, &pkt);
2125 } while (read_status == AVERROR(EAGAIN));
2126 if (read_status < 0)
2128 av_free_packet(&pkt);
2129 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2130 if (pkt.flags & AV_PKT_FLAG_KEY)
2132 if (nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2133 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);
2138 index = av_index_search_timestamp(st, timestamp, flags);
2143 ff_read_frame_flush(s);
2144 if (s->iformat->read_seek)
2145 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2147 ie = &st->index_entries[index];
2148 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2150 ff_update_cur_dts(s, st, ie->timestamp);
2155 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2156 int64_t timestamp, int flags)
2161 if (flags & AVSEEK_FLAG_BYTE) {
2162 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2164 ff_read_frame_flush(s);
2165 return seek_frame_byte(s, stream_index, timestamp, flags);
2168 if (stream_index < 0) {
2169 stream_index = av_find_default_stream_index(s);
2170 if (stream_index < 0)
2173 st = s->streams[stream_index];
2174 /* timestamp for default must be expressed in AV_TIME_BASE units */
2175 timestamp = av_rescale(timestamp, st->time_base.den,
2176 AV_TIME_BASE * (int64_t) st->time_base.num);
2179 /* first, we try the format specific seek */
2180 if (s->iformat->read_seek) {
2181 ff_read_frame_flush(s);
2182 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2188 if (s->iformat->read_timestamp &&
2189 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2190 ff_read_frame_flush(s);
2191 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2192 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2193 ff_read_frame_flush(s);
2194 return seek_frame_generic(s, stream_index, timestamp, flags);
2199 int av_seek_frame(AVFormatContext *s, int stream_index,
2200 int64_t timestamp, int flags)
2204 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2205 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2206 if ((flags & AVSEEK_FLAG_BACKWARD))
2210 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2211 flags & ~AVSEEK_FLAG_BACKWARD);
2214 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2217 ret = avformat_queue_attached_pictures(s);
2222 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2223 int64_t ts, int64_t max_ts, int flags)
2225 if (min_ts > ts || max_ts < ts)
2227 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2228 return AVERROR(EINVAL);
2231 flags |= AVSEEK_FLAG_ANY;
2232 flags &= ~AVSEEK_FLAG_BACKWARD;
2234 if (s->iformat->read_seek2) {
2236 ff_read_frame_flush(s);
2238 if (stream_index == -1 && s->nb_streams == 1) {
2239 AVRational time_base = s->streams[0]->time_base;
2240 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2241 min_ts = av_rescale_rnd(min_ts, time_base.den,
2242 time_base.num * (int64_t)AV_TIME_BASE,
2243 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2244 max_ts = av_rescale_rnd(max_ts, time_base.den,
2245 time_base.num * (int64_t)AV_TIME_BASE,
2246 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2249 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2253 ret = avformat_queue_attached_pictures(s);
2257 if (s->iformat->read_timestamp) {
2258 // try to seek via read_timestamp()
2261 // Fall back on old API if new is not implemented but old is.
2262 // Note the old API has somewhat different semantics.
2263 if (s->iformat->read_seek || 1) {
2264 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2265 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2266 if (ret<0 && ts != min_ts && max_ts != ts) {
2267 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2269 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2274 // try some generic seek like seek_frame_generic() but with new ts semantics
2275 return -1; //unreachable
2278 int avformat_flush(AVFormatContext *s)
2280 ff_read_frame_flush(s);
2284 /*******************************************************/
2287 * Return TRUE if the stream has accurate duration in any stream.
2289 * @return TRUE if the stream has accurate duration for at least one component.
2291 static int has_duration(AVFormatContext *ic)
2296 for (i = 0; i < ic->nb_streams; i++) {
2297 st = ic->streams[i];
2298 if (st->duration != AV_NOPTS_VALUE)
2301 if (ic->duration != AV_NOPTS_VALUE)
2307 * Estimate the stream timings from the one of each components.
2309 * Also computes the global bitrate if possible.
2311 static void update_stream_timings(AVFormatContext *ic)
2313 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2314 int64_t duration, duration1, filesize;
2319 start_time = INT64_MAX;
2320 start_time_text = INT64_MAX;
2321 end_time = INT64_MIN;
2322 duration = INT64_MIN;
2323 for (i = 0; i < ic->nb_streams; i++) {
2324 st = ic->streams[i];
2325 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2326 start_time1 = av_rescale_q(st->start_time, st->time_base,
2328 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2329 if (start_time1 < start_time_text)
2330 start_time_text = start_time1;
2332 start_time = FFMIN(start_time, start_time1);
2333 end_time1 = AV_NOPTS_VALUE;
2334 if (st->duration != AV_NOPTS_VALUE) {
2335 end_time1 = start_time1 +
2336 av_rescale_q(st->duration, st->time_base,
2338 end_time = FFMAX(end_time, end_time1);
2340 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2341 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2342 p->start_time = start_time1;
2343 if (p->end_time < end_time1)
2344 p->end_time = end_time1;
2347 if (st->duration != AV_NOPTS_VALUE) {
2348 duration1 = av_rescale_q(st->duration, st->time_base,
2350 duration = FFMAX(duration, duration1);
2353 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2354 start_time = start_time_text;
2355 else if (start_time > start_time_text)
2356 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2358 if (start_time != INT64_MAX) {
2359 ic->start_time = start_time;
2360 if (end_time != INT64_MIN) {
2361 if (ic->nb_programs) {
2362 for (i = 0; i < ic->nb_programs; i++) {
2363 p = ic->programs[i];
2364 if (p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2365 duration = FFMAX(duration, p->end_time - p->start_time);
2368 duration = FFMAX(duration, end_time - start_time);
2371 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2372 ic->duration = duration;
2374 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2375 /* compute the bitrate */
2376 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2377 (double) ic->duration;
2378 if (bitrate >= 0 && bitrate <= INT_MAX)
2379 ic->bit_rate = bitrate;
2383 static void fill_all_stream_timings(AVFormatContext *ic)
2388 update_stream_timings(ic);
2389 for (i = 0; i < ic->nb_streams; i++) {
2390 st = ic->streams[i];
2391 if (st->start_time == AV_NOPTS_VALUE) {
2392 if (ic->start_time != AV_NOPTS_VALUE)
2393 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2395 if (ic->duration != AV_NOPTS_VALUE)
2396 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2402 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2404 int64_t filesize, duration;
2405 int i, show_warning = 0;
2408 /* if bit_rate is already set, we believe it */
2409 if (ic->bit_rate <= 0) {
2411 for (i = 0; i < ic->nb_streams; i++) {
2412 st = ic->streams[i];
2413 if (st->codec->bit_rate > 0) {
2414 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2418 bit_rate += st->codec->bit_rate;
2419 } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2420 // If we have a videostream with packets but without a bitrate
2421 // then consider the sum not known
2426 ic->bit_rate = bit_rate;
2429 /* if duration is already set, we believe it */
2430 if (ic->duration == AV_NOPTS_VALUE &&
2431 ic->bit_rate != 0) {
2432 filesize = ic->pb ? avio_size(ic->pb) : 0;
2433 if (filesize > ic->internal->data_offset) {
2434 filesize -= ic->internal->data_offset;
2435 for (i = 0; i < ic->nb_streams; i++) {
2436 st = ic->streams[i];
2437 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2438 && st->duration == AV_NOPTS_VALUE) {
2439 duration = av_rescale(8 * filesize, st->time_base.den,
2441 (int64_t) st->time_base.num);
2442 st->duration = duration;
2449 av_log(ic, AV_LOG_WARNING,
2450 "Estimating duration from bitrate, this may be inaccurate\n");
2453 #define DURATION_MAX_READ_SIZE 250000LL
2454 #define DURATION_MAX_RETRY 4
2456 /* only usable for MPEG-PS streams */
2457 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2459 AVPacket pkt1, *pkt = &pkt1;
2461 int num, den, read_size, i, ret;
2462 int found_duration = 0;
2464 int64_t filesize, offset, duration;
2467 /* flush packet queue */
2468 flush_packet_queue(ic);
2470 for (i = 0; i < ic->nb_streams; i++) {
2471 st = ic->streams[i];
2472 if (st->start_time == AV_NOPTS_VALUE &&
2473 st->first_dts == AV_NOPTS_VALUE &&
2474 st->codec->codec_type != AVMEDIA_TYPE_UNKNOWN)
2475 av_log(st->codec, AV_LOG_WARNING,
2476 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2479 av_parser_close(st->parser);
2484 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2485 /* estimate the end time (duration) */
2486 /* XXX: may need to support wrapping */
2487 filesize = ic->pb ? avio_size(ic->pb) : 0;
2489 is_end = found_duration;
2490 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2494 avio_seek(ic->pb, offset, SEEK_SET);
2497 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2501 ret = ff_read_packet(ic, pkt);
2502 } while (ret == AVERROR(EAGAIN));
2505 read_size += pkt->size;
2506 st = ic->streams[pkt->stream_index];
2507 if (pkt->pts != AV_NOPTS_VALUE &&
2508 (st->start_time != AV_NOPTS_VALUE ||
2509 st->first_dts != AV_NOPTS_VALUE)) {
2510 if (pkt->duration == 0) {
2511 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2513 pkt->duration = av_rescale_rnd(1,
2514 num * (int64_t) st->time_base.den,
2515 den * (int64_t) st->time_base.num,
2519 duration = pkt->pts + pkt->duration;
2521 if (st->start_time != AV_NOPTS_VALUE)
2522 duration -= st->start_time;
2524 duration -= st->first_dts;
2526 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2527 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2528 st->duration = duration;
2529 st->info->last_duration = duration;
2532 av_free_packet(pkt);
2535 /* check if all audio/video streams have valid duration */
2538 for (i = 0; i < ic->nb_streams; i++) {
2539 st = ic->streams[i];
2540 switch (st->codec->codec_type) {
2541 case AVMEDIA_TYPE_VIDEO:
2542 case AVMEDIA_TYPE_AUDIO:
2543 if (st->duration == AV_NOPTS_VALUE)
2550 ++retry <= DURATION_MAX_RETRY);
2552 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2554 /* warn about audio/video streams which duration could not be estimated */
2555 for (i = 0; i < ic->nb_streams; i++) {
2556 st = ic->streams[i];
2557 if (st->duration == AV_NOPTS_VALUE) {
2558 switch (st->codec->codec_type) {
2559 case AVMEDIA_TYPE_VIDEO:
2560 case AVMEDIA_TYPE_AUDIO:
2561 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2562 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2564 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2568 fill_all_stream_timings(ic);
2570 avio_seek(ic->pb, old_offset, SEEK_SET);
2571 for (i = 0; i < ic->nb_streams; i++) {
2574 st = ic->streams[i];
2575 st->cur_dts = st->first_dts;
2576 st->last_IP_pts = AV_NOPTS_VALUE;
2577 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2578 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2579 st->pts_buffer[j] = AV_NOPTS_VALUE;
2583 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2587 /* get the file size, if possible */
2588 if (ic->iformat->flags & AVFMT_NOFILE) {
2591 file_size = avio_size(ic->pb);
2592 file_size = FFMAX(0, file_size);
2595 if ((!strcmp(ic->iformat->name, "mpeg") ||
2596 !strcmp(ic->iformat->name, "mpegts")) &&
2597 file_size && ic->pb->seekable) {
2598 /* get accurate estimate from the PTSes */
2599 estimate_timings_from_pts(ic, old_offset);
2600 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2601 } else if (has_duration(ic)) {
2602 /* at least one component has timings - we use them for all
2604 fill_all_stream_timings(ic);
2605 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2607 /* less precise: use bitrate info */
2608 estimate_timings_from_bit_rate(ic);
2609 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2611 update_stream_timings(ic);
2615 AVStream av_unused *st;
2616 for (i = 0; i < ic->nb_streams; i++) {
2617 st = ic->streams[i];
2618 av_log(ic, AV_LOG_TRACE, "%d: start_time: %0.3f duration: %0.3f\n", i,
2619 (double) st->start_time / AV_TIME_BASE,
2620 (double) st->duration / AV_TIME_BASE);
2622 av_log(ic, AV_LOG_TRACE,
2623 "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2624 (double) ic->start_time / AV_TIME_BASE,
2625 (double) ic->duration / AV_TIME_BASE,
2626 ic->bit_rate / 1000);
2630 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2632 AVCodecContext *avctx = st->codec;
2634 #define FAIL(errmsg) do { \
2636 *errmsg_ptr = errmsg; \
2640 if ( avctx->codec_id == AV_CODEC_ID_NONE
2641 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2642 FAIL("unknown codec");
2643 switch (avctx->codec_type) {
2644 case AVMEDIA_TYPE_AUDIO:
2645 if (!avctx->frame_size && determinable_frame_size(avctx))
2646 FAIL("unspecified frame size");
2647 if (st->info->found_decoder >= 0 &&
2648 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2649 FAIL("unspecified sample format");
2650 if (!avctx->sample_rate)
2651 FAIL("unspecified sample rate");
2652 if (!avctx->channels)
2653 FAIL("unspecified number of channels");
2654 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2655 FAIL("no decodable DTS frames");
2657 case AVMEDIA_TYPE_VIDEO:
2659 FAIL("unspecified size");
2660 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2661 FAIL("unspecified pixel format");
2662 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2663 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2664 FAIL("no frame in rv30/40 and no sar");
2666 case AVMEDIA_TYPE_SUBTITLE:
2667 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2668 FAIL("unspecified size");
2670 case AVMEDIA_TYPE_DATA:
2671 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2677 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2678 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2679 AVDictionary **options)
2681 const AVCodec *codec;
2682 int got_picture = 1, ret = 0;
2683 AVFrame *frame = av_frame_alloc();
2684 AVSubtitle subtitle;
2685 AVPacket pkt = *avpkt;
2688 return AVERROR(ENOMEM);
2690 if (!avcodec_is_open(st->codec) &&
2691 st->info->found_decoder <= 0 &&
2692 (st->codec->codec_id != -st->info->found_decoder || !st->codec->codec_id)) {
2693 AVDictionary *thread_opt = NULL;
2695 codec = find_decoder(s, st, st->codec->codec_id);
2698 st->info->found_decoder = -st->codec->codec_id;
2703 /* Force thread count to 1 since the H.264 decoder will not extract
2704 * SPS and PPS to extradata during multi-threaded decoding. */
2705 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2706 if (s->codec_whitelist)
2707 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
2708 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2710 av_dict_free(&thread_opt);
2712 st->info->found_decoder = -st->codec->codec_id;
2715 st->info->found_decoder = 1;
2716 } else if (!st->info->found_decoder)
2717 st->info->found_decoder = 1;
2719 if (st->info->found_decoder < 0) {
2724 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2726 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
2727 (!st->codec_info_nb_frames &&
2728 (st->codec->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
2730 switch (st->codec->codec_type) {
2731 case AVMEDIA_TYPE_VIDEO:
2732 ret = avcodec_decode_video2(st->codec, frame,
2733 &got_picture, &pkt);
2735 case AVMEDIA_TYPE_AUDIO:
2736 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2738 case AVMEDIA_TYPE_SUBTITLE:
2739 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2740 &got_picture, &pkt);
2748 st->nb_decoded_frames++;
2755 if (!pkt.data && !got_picture)
2759 av_frame_free(&frame);
2763 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2765 while (tags->id != AV_CODEC_ID_NONE) {
2773 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2776 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2777 if (tag == tags[i].tag)
2779 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2780 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2782 return AV_CODEC_ID_NONE;
2785 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2790 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2792 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2794 return AV_CODEC_ID_NONE;
2799 if (sflags & (1 << (bps - 1))) {
2802 return AV_CODEC_ID_PCM_S8;
2804 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2806 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2808 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2810 return AV_CODEC_ID_NONE;
2815 return AV_CODEC_ID_PCM_U8;
2817 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2819 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2821 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2823 return AV_CODEC_ID_NONE;
2829 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
2832 if (!av_codec_get_tag2(tags, id, &tag))
2837 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2841 for (i = 0; tags && tags[i]; i++) {
2842 const AVCodecTag *codec_tags = tags[i];
2843 while (codec_tags->id != AV_CODEC_ID_NONE) {
2844 if (codec_tags->id == id) {
2845 *tag = codec_tags->tag;
2854 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
2857 for (i = 0; tags && tags[i]; i++) {
2858 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
2859 if (id != AV_CODEC_ID_NONE)
2862 return AV_CODEC_ID_NONE;
2865 static void compute_chapters_end(AVFormatContext *s)
2868 int64_t max_time = s->duration +
2869 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2871 for (i = 0; i < s->nb_chapters; i++)
2872 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2873 AVChapter *ch = s->chapters[i];
2874 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
2878 for (j = 0; j < s->nb_chapters; j++) {
2879 AVChapter *ch1 = s->chapters[j];
2880 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
2882 if (j != i && next_start > ch->start && next_start < end)
2885 ch->end = (end == INT64_MAX) ? ch->start : end;
2889 static int get_std_framerate(int i)
2892 return (i + 1) * 1001;
2896 return ((const int[]) { 40, 48, 50, 60, 80, 120, 240})[i] * 1001 * 12;
2900 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
2903 /* Is the time base unreliable?
2904 * This is a heuristic to balance between quick acceptance of the values in
2905 * the headers vs. some extra checks.
2906 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2907 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2908 * And there are "variable" fps files this needs to detect as well. */
2909 static int tb_unreliable(AVCodecContext *c)
2911 if (c->time_base.den >= 101LL * c->time_base.num ||
2912 c->time_base.den < 5LL * c->time_base.num ||
2913 // c->codec_tag == AV_RL32("DIVX") ||
2914 // c->codec_tag == AV_RL32("XVID") ||
2915 c->codec_tag == AV_RL32("mp4v") ||
2916 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
2917 c->codec_id == AV_CODEC_ID_GIF ||
2918 c->codec_id == AV_CODEC_ID_HEVC ||
2919 c->codec_id == AV_CODEC_ID_H264)
2924 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2928 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
2929 avctx->extradata = NULL;
2930 avctx->extradata_size = 0;
2931 return AVERROR(EINVAL);
2933 avctx->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
2934 if (avctx->extradata) {
2935 memset(avctx->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
2936 avctx->extradata_size = size;
2939 avctx->extradata_size = 0;
2940 ret = AVERROR(ENOMEM);
2945 int ff_get_extradata(AVCodecContext *avctx, AVIOContext *pb, int size)
2947 int ret = ff_alloc_extradata(avctx, size);
2950 ret = avio_read(pb, avctx->extradata, size);
2952 av_freep(&avctx->extradata);
2953 avctx->extradata_size = 0;
2954 av_log(avctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
2955 return ret < 0 ? ret : AVERROR_INVALIDDATA;
2961 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2964 int64_t last = st->info->last_dts;
2966 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2967 && ts - (uint64_t)last < INT64_MAX) {
2968 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2969 int64_t duration = ts - last;
2971 if (!st->info->duration_error)
2972 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2973 if (!st->info->duration_error)
2974 return AVERROR(ENOMEM);
2976 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2977 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2978 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
2979 if (st->info->duration_error[0][1][i] < 1e10) {
2980 int framerate = get_std_framerate(i);
2981 double sdts = dts*framerate/(1001*12);
2982 for (j= 0; j<2; j++) {
2983 int64_t ticks = llrint(sdts+j*0.5);
2984 double error= sdts - ticks + j*0.5;
2985 st->info->duration_error[j][0][i] += error;
2986 st->info->duration_error[j][1][i] += error*error;
2990 st->info->duration_count++;
2991 st->info->rfps_duration_sum += duration;
2993 if (st->info->duration_count % 10 == 0) {
2994 int n = st->info->duration_count;
2995 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
2996 if (st->info->duration_error[0][1][i] < 1e10) {
2997 double a0 = st->info->duration_error[0][0][i] / n;
2998 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2999 double a1 = st->info->duration_error[1][0][i] / n;
3000 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3001 if (error0 > 0.04 && error1 > 0.04) {
3002 st->info->duration_error[0][1][i] = 2e10;
3003 st->info->duration_error[1][1][i] = 2e10;
3009 // ignore the first 4 values, they might have some random jitter
3010 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3011 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3013 if (ts != AV_NOPTS_VALUE)
3014 st->info->last_dts = ts;
3019 void ff_rfps_calculate(AVFormatContext *ic)
3023 for (i = 0; i < ic->nb_streams; i++) {
3024 AVStream *st = ic->streams[i];
3026 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
3028 // the check for tb_unreliable() is not completely correct, since this is not about handling
3029 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3030 // ipmovie.c produces.
3031 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)
3032 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);
3033 if (st->info->duration_count>1 && !st->r_frame_rate.num
3034 && tb_unreliable(st->codec)) {
3036 double best_error= 0.01;
3037 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3039 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3042 if (st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3044 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3047 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3050 for (k= 0; k<2; k++) {
3051 int n = st->info->duration_count;
3052 double a= st->info->duration_error[k][0][j] / n;
3053 double error= st->info->duration_error[k][1][j]/n - a*a;
3055 if (error < best_error && best_error> 0.000000001) {
3057 num = get_std_framerate(j);
3060 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3063 // do not increase frame rate by more than 1 % in order to match a standard rate.
3064 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3065 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3067 if ( !st->avg_frame_rate.num
3068 && st->r_frame_rate.num && st->info->rfps_duration_sum
3069 && st->info->codec_info_duration <= 0
3070 && st->info->duration_count > 2
3071 && 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
3073 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3074 st->avg_frame_rate = st->r_frame_rate;
3077 av_freep(&st->info->duration_error);
3078 st->info->last_dts = AV_NOPTS_VALUE;
3079 st->info->duration_count = 0;
3080 st->info->rfps_duration_sum = 0;
3084 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3086 int i, count, ret = 0, j;
3089 AVPacket pkt1, *pkt;
3090 int64_t old_offset = avio_tell(ic->pb);
3091 // new streams might appear, no options for those
3092 int orig_nb_streams = ic->nb_streams;
3094 #if FF_API_PROBESIZE_32
3095 int64_t max_analyze_duration = ic->max_analyze_duration2;
3097 int64_t max_analyze_duration = ic->max_analyze_duration;
3099 int64_t max_stream_analyze_duration;
3100 int64_t max_subtitle_analyze_duration;
3101 #if FF_API_PROBESIZE_32
3102 int64_t probesize = ic->probesize2;
3104 int64_t probesize = ic->probesize;
3107 if (!max_analyze_duration)
3108 max_analyze_duration = ic->max_analyze_duration;
3110 probesize = ic->probesize;
3111 flush_codecs = probesize > 0;
3113 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3115 max_stream_analyze_duration = max_analyze_duration;
3116 max_subtitle_analyze_duration = max_analyze_duration;
3117 if (!max_analyze_duration) {
3118 max_stream_analyze_duration =
3119 max_analyze_duration = 5*AV_TIME_BASE;
3120 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3121 if (!strcmp(ic->iformat->name, "flv"))
3122 max_stream_analyze_duration = 30*AV_TIME_BASE;
3126 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
3127 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
3129 for (i = 0; i < ic->nb_streams; i++) {
3130 const AVCodec *codec;
3131 AVDictionary *thread_opt = NULL;
3132 st = ic->streams[i];
3134 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3135 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3136 /* if (!st->time_base.num)
3138 if (!st->codec->time_base.num)
3139 st->codec->time_base = st->time_base;
3141 // only for the split stuff
3142 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
3143 st->parser = av_parser_init(st->codec->codec_id);
3145 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3146 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3147 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3148 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3150 } else if (st->need_parsing) {
3151 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3152 "%s, packets or times may be invalid.\n",
3153 avcodec_get_name(st->codec->codec_id));
3156 codec = find_decoder(ic, st, st->codec->codec_id);
3158 /* Force thread count to 1 since the H.264 decoder will not extract
3159 * SPS and PPS to extradata during multi-threaded decoding. */
3160 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3162 if (ic->codec_whitelist)
3163 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3165 /* Ensure that subtitle_header is properly set. */
3166 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
3167 && codec && !st->codec->codec) {
3168 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
3169 av_log(ic, AV_LOG_WARNING,
3170 "Failed to open codec in av_find_stream_info\n");
3173 // Try to just open decoders, in case this is enough to get parameters.
3174 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3175 if (codec && !st->codec->codec)
3176 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
3177 av_log(ic, AV_LOG_WARNING,
3178 "Failed to open codec in av_find_stream_info\n");
3181 av_dict_free(&thread_opt);
3184 for (i = 0; i < ic->nb_streams; i++) {
3185 #if FF_API_R_FRAME_RATE
3186 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3188 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3189 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3195 int analyzed_all_streams;
3196 if (ff_check_interrupt(&ic->interrupt_callback)) {
3198 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3202 /* check if one codec still needs to be handled */
3203 for (i = 0; i < ic->nb_streams; i++) {
3204 int fps_analyze_framecount = 20;
3206 st = ic->streams[i];
3207 if (!has_codec_parameters(st, NULL))
3209 /* If the timebase is coarse (like the usual millisecond precision
3210 * of mkv), we need to analyze more frames to reliably arrive at
3211 * the correct fps. */
3212 if (av_q2d(st->time_base) > 0.0005)
3213 fps_analyze_framecount *= 2;
3214 if (!tb_unreliable(st->codec))
3215 fps_analyze_framecount = 0;
3216 if (ic->fps_probe_size >= 0)
3217 fps_analyze_framecount = ic->fps_probe_size;
3218 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3219 fps_analyze_framecount = 0;
3220 /* variable fps and no guess at the real fps */
3221 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3222 st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3223 int count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3224 st->info->codec_info_duration_fields/2 :
3225 st->info->duration_count;
3226 if (count < fps_analyze_framecount)
3229 if (st->parser && st->parser->parser->split &&
3230 !st->codec->extradata)
3232 if (st->first_dts == AV_NOPTS_VALUE &&
3233 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3234 st->codec_info_nb_frames < ic->max_ts_probe &&
3235 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
3236 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
3239 analyzed_all_streams = 0;
3240 if (i == ic->nb_streams) {
3241 analyzed_all_streams = 1;
3242 /* NOTE: If the format has no header, then we need to read some
3243 * packets to get most of the streams, so we cannot stop here. */
3244 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3245 /* If we found the info for all the codecs, we can stop. */
3247 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3252 /* We did not get all the codec info, but we read too much data. */
3253 if (read_size >= probesize) {
3255 av_log(ic, AV_LOG_DEBUG,
3256 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3257 for (i = 0; i < ic->nb_streams; i++)
3258 if (!ic->streams[i]->r_frame_rate.num &&
3259 ic->streams[i]->info->duration_count <= 1 &&
3260 ic->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
3261 strcmp(ic->iformat->name, "image2"))
3262 av_log(ic, AV_LOG_WARNING,
3263 "Stream #%d: not enough frames to estimate rate; "
3264 "consider increasing probesize\n", i);
3268 /* NOTE: A new stream can be added there if no header in file
3269 * (AVFMTCTX_NOHEADER). */
3270 ret = read_frame_internal(ic, &pkt1);
3271 if (ret == AVERROR(EAGAIN))
3279 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3280 free_packet_buffer(&ic->internal->packet_buffer,
3281 &ic->internal->packet_buffer_end);
3283 pkt = add_to_pktbuf(&ic->internal->packet_buffer, &pkt1,
3284 &ic->internal->packet_buffer_end);
3286 ret = AVERROR(ENOMEM);
3287 goto find_stream_info_err;
3289 if ((ret = av_dup_packet(pkt)) < 0)
3290 goto find_stream_info_err;
3293 st = ic->streams[pkt->stream_index];
3294 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3295 read_size += pkt->size;
3297 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3298 /* check for non-increasing dts */
3299 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3300 st->info->fps_last_dts >= pkt->dts) {
3301 av_log(ic, AV_LOG_DEBUG,
3302 "Non-increasing DTS in stream %d: packet %d with DTS "
3303 "%"PRId64", packet %d with DTS %"PRId64"\n",
3304 st->index, st->info->fps_last_dts_idx,
3305 st->info->fps_last_dts, st->codec_info_nb_frames,
3307 st->info->fps_first_dts =
3308 st->info->fps_last_dts = AV_NOPTS_VALUE;
3310 /* Check for a discontinuity in dts. If the difference in dts
3311 * is more than 1000 times the average packet duration in the
3312 * sequence, we treat it as a discontinuity. */
3313 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3314 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3315 (pkt->dts - st->info->fps_last_dts) / 1000 >
3316 (st->info->fps_last_dts - st->info->fps_first_dts) /
3317 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3318 av_log(ic, AV_LOG_WARNING,
3319 "DTS discontinuity in stream %d: packet %d with DTS "
3320 "%"PRId64", packet %d with DTS %"PRId64"\n",
3321 st->index, st->info->fps_last_dts_idx,
3322 st->info->fps_last_dts, st->codec_info_nb_frames,
3324 st->info->fps_first_dts =
3325 st->info->fps_last_dts = AV_NOPTS_VALUE;
3328 /* update stored dts values */
3329 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3330 st->info->fps_first_dts = pkt->dts;
3331 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3333 st->info->fps_last_dts = pkt->dts;
3334 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3336 if (st->codec_info_nb_frames>1) {
3340 if (st->time_base.den > 0)
3341 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3342 if (st->avg_frame_rate.num > 0)
3343 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3346 && st->codec_info_nb_frames>30
3347 && st->info->fps_first_dts != AV_NOPTS_VALUE
3348 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3349 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3351 if (analyzed_all_streams) limit = max_analyze_duration;
3352 else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3353 else limit = max_stream_analyze_duration;
3356 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3357 max_analyze_duration,
3358 t, pkt->stream_index);
3359 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3360 av_packet_unref(pkt);
3363 if (pkt->duration) {
3364 st->info->codec_info_duration += pkt->duration;
3365 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3368 #if FF_API_R_FRAME_RATE
3369 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3370 ff_rfps_add_frame(ic, st, pkt->dts);
3372 if (st->parser && st->parser->parser->split && !st->codec->extradata) {
3373 int i = st->parser->parser->split(st->codec, pkt->data, pkt->size);
3374 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3375 if (ff_alloc_extradata(st->codec, i))
3376 return AVERROR(ENOMEM);
3377 memcpy(st->codec->extradata, pkt->data,
3378 st->codec->extradata_size);
3382 /* If still no information, we try to open the codec and to
3383 * decompress the frame. We try to avoid that in most cases as
3384 * it takes longer and uses more memory. For MPEG-4, we need to
3385 * decompress for QuickTime.
3387 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3388 * least one frame of codec data, this makes sure the codec initializes
3389 * the channel configuration and does not only trust the values from
3391 try_decode_frame(ic, st, pkt,
3392 (options && i < orig_nb_streams) ? &options[i] : NULL);
3394 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3395 av_packet_unref(pkt);
3397 st->codec_info_nb_frames++;
3402 AVPacket empty_pkt = { 0 };
3404 av_init_packet(&empty_pkt);
3406 for (i = 0; i < ic->nb_streams; i++) {
3408 st = ic->streams[i];
3410 /* flush the decoders */
3411 if (st->info->found_decoder == 1) {
3413 err = try_decode_frame(ic, st, &empty_pkt,
3414 (options && i < orig_nb_streams)
3415 ? &options[i] : NULL);
3416 } while (err > 0 && !has_codec_parameters(st, NULL));
3419 av_log(ic, AV_LOG_INFO,
3420 "decoding for stream %d failed\n", st->index);
3426 // close codecs which were opened in try_decode_frame()
3427 for (i = 0; i < ic->nb_streams; i++) {
3428 st = ic->streams[i];
3429 avcodec_close(st->codec);
3432 ff_rfps_calculate(ic);
3434 for (i = 0; i < ic->nb_streams; i++) {
3435 st = ic->streams[i];
3436 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3437 if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample) {
3438 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3439 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == st->codec->pix_fmt)
3440 st->codec->codec_tag= tag;
3443 /* estimate average framerate if not set by demuxer */
3444 if (st->info->codec_info_duration_fields &&
3445 !st->avg_frame_rate.num &&
3446 st->info->codec_info_duration) {
3448 double best_error = 0.01;
3450 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3451 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3452 st->info->codec_info_duration < 0)
3454 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3455 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3456 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3458 /* Round guessed framerate to a "standard" framerate if it's
3459 * within 1% of the original estimate. */
3460 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3461 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3462 double error = fabs(av_q2d(st->avg_frame_rate) /
3463 av_q2d(std_fps) - 1);
3465 if (error < best_error) {
3467 best_fps = std_fps.num;
3471 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3472 best_fps, 12 * 1001, INT_MAX);
3475 if (!st->r_frame_rate.num) {
3476 if ( st->codec->time_base.den * (int64_t) st->time_base.num
3477 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t) st->time_base.den) {
3478 st->r_frame_rate.num = st->codec->time_base.den;
3479 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3481 st->r_frame_rate.num = st->time_base.den;
3482 st->r_frame_rate.den = st->time_base.num;
3485 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3486 AVRational hw_ratio = { st->codec->height, st->codec->width };
3487 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3490 } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3491 if (!st->codec->bits_per_coded_sample)
3492 st->codec->bits_per_coded_sample =
3493 av_get_bits_per_sample(st->codec->codec_id);
3494 // set stream disposition based on audio service type
3495 switch (st->codec->audio_service_type) {
3496 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3497 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3499 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3500 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3502 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3503 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
3505 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3506 st->disposition = AV_DISPOSITION_COMMENT;
3508 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3509 st->disposition = AV_DISPOSITION_KARAOKE;
3516 estimate_timings(ic, old_offset);
3518 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
3520 if (ret >= 0 && ic->nb_streams)
3521 /* We could not have all the codec parameters before EOF. */
3523 for (i = 0; i < ic->nb_streams; i++) {
3525 st = ic->streams[i];
3526 if (!has_codec_parameters(st, &errmsg)) {
3528 avcodec_string(buf, sizeof(buf), st->codec, 0);
3529 av_log(ic, AV_LOG_WARNING,
3530 "Could not find codec parameters for stream %d (%s): %s\n"
3531 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3538 compute_chapters_end(ic);
3540 find_stream_info_err:
3541 for (i = 0; i < ic->nb_streams; i++) {
3542 st = ic->streams[i];
3543 if (ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3544 ic->streams[i]->codec->thread_count = 0;
3546 av_freep(&st->info->duration_error);
3547 av_freep(&ic->streams[i]->info);
3550 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3551 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3555 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3559 for (i = 0; i < ic->nb_programs; i++) {
3560 if (ic->programs[i] == last) {
3564 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3565 if (ic->programs[i]->stream_index[j] == s)
3566 return ic->programs[i];
3572 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
3573 int wanted_stream_nb, int related_stream,
3574 AVCodec **decoder_ret, int flags)
3576 int i, nb_streams = ic->nb_streams;
3577 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3578 unsigned *program = NULL;
3579 const AVCodec *decoder = NULL, *best_decoder = NULL;
3581 if (related_stream >= 0 && wanted_stream_nb < 0) {
3582 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3584 program = p->stream_index;
3585 nb_streams = p->nb_stream_indexes;
3588 for (i = 0; i < nb_streams; i++) {
3589 int real_stream_index = program ? program[i] : i;
3590 AVStream *st = ic->streams[real_stream_index];
3591 AVCodecContext *avctx = st->codec;
3592 if (avctx->codec_type != type)
3594 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3596 if (wanted_stream_nb != real_stream_index &&
3597 st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED |
3598 AV_DISPOSITION_VISUAL_IMPAIRED))
3600 if (type == AVMEDIA_TYPE_AUDIO && !(avctx->channels && avctx->sample_rate))
3603 decoder = find_decoder(ic, st, st->codec->codec_id);
3606 ret = AVERROR_DECODER_NOT_FOUND;
3610 count = st->codec_info_nb_frames;
3611 bitrate = avctx->bit_rate;
3613 bitrate = avctx->rc_max_rate;
3614 multiframe = FFMIN(5, count);
3615 if ((best_multiframe > multiframe) ||
3616 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3617 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3620 best_bitrate = bitrate;
3621 best_multiframe = multiframe;
3622 ret = real_stream_index;
3623 best_decoder = decoder;
3624 if (program && i == nb_streams - 1 && ret < 0) {
3626 nb_streams = ic->nb_streams;
3627 /* no related stream found, try again with everything */
3632 *decoder_ret = (AVCodec*)best_decoder;
3636 /*******************************************************/
3638 int av_read_play(AVFormatContext *s)
3640 if (s->iformat->read_play)
3641 return s->iformat->read_play(s);
3643 return avio_pause(s->pb, 0);
3644 return AVERROR(ENOSYS);
3647 int av_read_pause(AVFormatContext *s)
3649 if (s->iformat->read_pause)
3650 return s->iformat->read_pause(s);
3652 return avio_pause(s->pb, 1);
3653 return AVERROR(ENOSYS);
3656 void ff_free_stream(AVFormatContext *s, AVStream *st) {
3658 av_assert0(s->nb_streams>0);
3659 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
3661 for (j = 0; j < st->nb_side_data; j++)
3662 av_freep(&st->side_data[j].data);
3663 av_freep(&st->side_data);
3664 st->nb_side_data = 0;
3667 av_parser_close(st->parser);
3669 if (st->attached_pic.data)
3670 av_free_packet(&st->attached_pic);
3671 av_dict_free(&st->metadata);
3672 av_freep(&st->probe_data.buf);
3673 av_freep(&st->index_entries);
3674 av_freep(&st->codec->extradata);
3675 av_freep(&st->codec->subtitle_header);
3676 av_freep(&st->codec);
3677 av_freep(&st->priv_data);
3679 av_freep(&st->info->duration_error);
3680 av_freep(&st->info);
3681 av_freep(&st->recommended_encoder_configuration);
3682 av_freep(&st->priv_pts);
3683 av_freep(&s->streams[ --s->nb_streams ]);
3686 void avformat_free_context(AVFormatContext *s)
3694 if (s->iformat && s->iformat->priv_class && s->priv_data)
3695 av_opt_free(s->priv_data);
3696 if (s->oformat && s->oformat->priv_class && s->priv_data)
3697 av_opt_free(s->priv_data);
3699 for (i = s->nb_streams - 1; i >= 0; i--) {
3700 ff_free_stream(s, s->streams[i]);
3702 for (i = s->nb_programs - 1; i >= 0; i--) {
3703 av_dict_free(&s->programs[i]->metadata);
3704 av_freep(&s->programs[i]->stream_index);
3705 av_freep(&s->programs[i]);
3707 av_freep(&s->programs);
3708 av_freep(&s->priv_data);
3709 while (s->nb_chapters--) {
3710 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3711 av_freep(&s->chapters[s->nb_chapters]);
3713 av_freep(&s->chapters);
3714 av_dict_free(&s->metadata);
3715 av_freep(&s->streams);
3716 av_freep(&s->internal);
3717 flush_packet_queue(s);
3721 void avformat_close_input(AVFormatContext **ps)
3732 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
3733 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3736 flush_packet_queue(s);
3739 if (s->iformat->read_close)
3740 s->iformat->read_close(s);
3742 avformat_free_context(s);
3749 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3755 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3757 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3760 s->streams = streams;
3762 st = av_mallocz(sizeof(AVStream));
3765 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3769 st->info->last_dts = AV_NOPTS_VALUE;
3771 st->codec = avcodec_alloc_context3(c);
3778 /* no default bitrate if decoding */
3779 st->codec->bit_rate = 0;
3781 /* default pts setting is MPEG-like */
3782 avpriv_set_pts_info(st, 33, 1, 90000);
3785 st->index = s->nb_streams;
3786 st->start_time = AV_NOPTS_VALUE;
3787 st->duration = AV_NOPTS_VALUE;
3788 /* we set the current DTS to 0 so that formats without any timestamps
3789 * but durations get some timestamps, formats with some unknown
3790 * timestamps have their first few packets buffered and the
3791 * timestamps corrected before they are returned to the user */
3792 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3793 st->first_dts = AV_NOPTS_VALUE;
3794 st->probe_packets = MAX_PROBE_PACKETS;
3795 st->pts_wrap_reference = AV_NOPTS_VALUE;
3796 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3798 st->last_IP_pts = AV_NOPTS_VALUE;
3799 st->last_dts_for_order_check = AV_NOPTS_VALUE;
3800 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
3801 st->pts_buffer[i] = AV_NOPTS_VALUE;
3803 st->sample_aspect_ratio = (AVRational) { 0, 1 };
3805 #if FF_API_R_FRAME_RATE
3806 st->info->last_dts = AV_NOPTS_VALUE;
3808 st->info->fps_first_dts = AV_NOPTS_VALUE;
3809 st->info->fps_last_dts = AV_NOPTS_VALUE;
3811 st->inject_global_side_data = s->internal->inject_global_side_data;
3813 s->streams[s->nb_streams++] = st;
3817 AVProgram *av_new_program(AVFormatContext *ac, int id)
3819 AVProgram *program = NULL;
3822 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
3824 for (i = 0; i < ac->nb_programs; i++)
3825 if (ac->programs[i]->id == id)
3826 program = ac->programs[i];
3829 program = av_mallocz(sizeof(AVProgram));
3832 dynarray_add(&ac->programs, &ac->nb_programs, program);
3833 program->discard = AVDISCARD_NONE;
3836 program->pts_wrap_reference = AV_NOPTS_VALUE;
3837 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3839 program->start_time =
3840 program->end_time = AV_NOPTS_VALUE;
3845 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
3846 int64_t start, int64_t end, const char *title)
3848 AVChapter *chapter = NULL;
3851 if (end != AV_NOPTS_VALUE && start > end) {
3852 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
3856 for (i = 0; i < s->nb_chapters; i++)
3857 if (s->chapters[i]->id == id)
3858 chapter = s->chapters[i];
3861 chapter = av_mallocz(sizeof(AVChapter));
3864 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3866 av_dict_set(&chapter->metadata, "title", title, 0);
3868 chapter->time_base = time_base;
3869 chapter->start = start;
3875 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
3878 AVProgram *program = NULL;
3881 if (idx >= ac->nb_streams) {
3882 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3886 for (i = 0; i < ac->nb_programs; i++) {
3887 if (ac->programs[i]->id != progid)
3889 program = ac->programs[i];
3890 for (j = 0; j < program->nb_stream_indexes; j++)
3891 if (program->stream_index[j] == idx)
3894 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3897 program->stream_index = tmp;
3898 program->stream_index[program->nb_stream_indexes++] = idx;
3903 uint64_t ff_ntp_time(void)
3905 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3908 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
3911 char *q, buf1[20], c;
3912 int nd, len, percentd_found;
3924 while (av_isdigit(*p))
3925 nd = nd * 10 + *p++ - '0';
3927 } while (av_isdigit(c));
3938 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3940 if ((q - buf + len) > buf_size - 1)
3942 memcpy(q, buf1, len);
3950 if ((q - buf) < buf_size - 1)
3954 if (!percentd_found)
3963 void av_url_split(char *proto, int proto_size,
3964 char *authorization, int authorization_size,
3965 char *hostname, int hostname_size,
3966 int *port_ptr, char *path, int path_size, const char *url)
3968 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3974 if (authorization_size > 0)
3975 authorization[0] = 0;
3976 if (hostname_size > 0)
3981 /* parse protocol */
3982 if ((p = strchr(url, ':'))) {
3983 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3990 /* no protocol means plain filename */
3991 av_strlcpy(path, url, path_size);
3995 /* separate path from hostname */
3996 ls = strchr(p, '/');
3997 ls2 = strchr(p, '?');
4001 ls = FFMIN(ls, ls2);
4003 av_strlcpy(path, ls, path_size);
4005 ls = &p[strlen(p)]; // XXX
4007 /* the rest is hostname, use that to parse auth/port */
4009 /* authorization (user[:pass]@hostname) */
4011 while ((at = strchr(p, '@')) && at < ls) {
4012 av_strlcpy(authorization, at2,
4013 FFMIN(authorization_size, at + 1 - at2));
4014 p = at + 1; /* skip '@' */
4017 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4019 av_strlcpy(hostname, p + 1,
4020 FFMIN(hostname_size, brk - p));
4021 if (brk[1] == ':' && port_ptr)
4022 *port_ptr = atoi(brk + 2);
4023 } else if ((col = strchr(p, ':')) && col < ls) {
4024 av_strlcpy(hostname, p,
4025 FFMIN(col + 1 - p, hostname_size));
4027 *port_ptr = atoi(col + 1);
4029 av_strlcpy(hostname, p,
4030 FFMIN(ls + 1 - p, hostname_size));
4034 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4037 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4040 'C', 'D', 'E', 'F' };
4041 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4044 'c', 'd', 'e', 'f' };
4045 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4047 for (i = 0; i < s; i++) {
4048 buff[i * 2] = hex_table[src[i] >> 4];
4049 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4055 int ff_hex_to_data(uint8_t *data, const char *p)
4062 p += strspn(p, SPACE_CHARS);
4065 c = av_toupper((unsigned char) *p++);
4066 if (c >= '0' && c <= '9')
4068 else if (c >= 'A' && c <= 'F')
4083 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4084 unsigned int pts_num, unsigned int pts_den)
4087 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4088 if (new_tb.num != pts_num)
4089 av_log(NULL, AV_LOG_DEBUG,
4090 "st:%d removing common factor %d from timebase\n",
4091 s->index, pts_num / new_tb.num);
4093 av_log(NULL, AV_LOG_WARNING,
4094 "st:%d has too large timebase, reducing\n", s->index);
4096 if (new_tb.num <= 0 || new_tb.den <= 0) {
4097 av_log(NULL, AV_LOG_ERROR,
4098 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4099 new_tb.num, new_tb.den,
4103 s->time_base = new_tb;
4104 av_codec_set_pkt_timebase(s->codec, new_tb);
4105 s->pts_wrap_bits = pts_wrap_bits;
4108 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4111 const char *ptr = str;
4113 /* Parse key=value pairs. */
4116 char *dest = NULL, *dest_end;
4117 int key_len, dest_len = 0;
4119 /* Skip whitespace and potential commas. */
4120 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4127 if (!(ptr = strchr(key, '=')))
4130 key_len = ptr - key;
4132 callback_get_buf(context, key, key_len, &dest, &dest_len);
4133 dest_end = dest + dest_len - 1;
4137 while (*ptr && *ptr != '\"') {
4141 if (dest && dest < dest_end)
4145 if (dest && dest < dest_end)
4153 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4154 if (dest && dest < dest_end)
4162 int ff_find_stream_index(AVFormatContext *s, int id)
4165 for (i = 0; i < s->nb_streams; i++)
4166 if (s->streams[i]->id == id)
4171 int64_t ff_iso8601_to_unix_time(const char *datestr)
4173 struct tm time1 = { 0 }, time2 = { 0 };
4174 const char *ret1, *ret2;
4175 ret1 = av_small_strptime(datestr, "%Y - %m - %d %T", &time1);
4176 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%T", &time2);
4178 return av_timegm(&time2);
4180 return av_timegm(&time1);
4183 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4187 unsigned int codec_tag;
4188 if (ofmt->query_codec)
4189 return ofmt->query_codec(codec_id, std_compliance);
4190 else if (ofmt->codec_tag)
4191 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4192 else if (codec_id == ofmt->video_codec ||
4193 codec_id == ofmt->audio_codec ||
4194 codec_id == ofmt->subtitle_codec)
4197 return AVERROR_PATCHWELCOME;
4200 int avformat_network_init(void)
4204 ff_network_inited_globally = 1;
4205 if ((ret = ff_network_init()) < 0)
4207 if ((ret = ff_tls_init()) < 0)
4213 int avformat_network_deinit(void)
4218 ff_network_inited_globally = 0;
4223 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4224 uint64_t channel_layout, int32_t sample_rate,
4225 int32_t width, int32_t height)
4231 return AVERROR(EINVAL);
4234 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4236 if (channel_layout) {
4238 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4242 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4244 if (width || height) {
4246 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4248 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4250 return AVERROR(ENOMEM);
4251 bytestream_put_le32(&data, flags);
4253 bytestream_put_le32(&data, channels);
4255 bytestream_put_le64(&data, channel_layout);
4257 bytestream_put_le32(&data, sample_rate);
4258 if (width || height) {
4259 bytestream_put_le32(&data, width);
4260 bytestream_put_le32(&data, height);
4265 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4267 AVRational undef = {0, 1};
4268 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4269 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4270 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4272 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4273 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4274 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4275 stream_sample_aspect_ratio = undef;
4277 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4278 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4279 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4280 frame_sample_aspect_ratio = undef;
4282 if (stream_sample_aspect_ratio.num)
4283 return stream_sample_aspect_ratio;
4285 return frame_sample_aspect_ratio;
4288 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4290 AVRational fr = st->r_frame_rate;
4291 AVRational codec_fr = st->codec->framerate;
4292 AVRational avg_fr = st->avg_frame_rate;
4294 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4295 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4300 if (st->codec->ticks_per_frame > 1) {
4301 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4302 (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))
4309 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4312 if (*spec <= '9' && *spec >= '0') /* opt:index */
4313 return strtol(spec, NULL, 0) == st->index;
4314 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4315 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
4316 enum AVMediaType type;
4320 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4321 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4322 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4323 case 'd': type = AVMEDIA_TYPE_DATA; break;
4324 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4325 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
4326 default: av_assert0(0);
4328 if (type != st->codec->codec_type)
4330 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
4332 if (*spec++ == ':') { /* possibly followed by :index */
4333 int i, index = strtol(spec, NULL, 0);
4334 for (i = 0; i < s->nb_streams; i++)
4335 if (s->streams[i]->codec->codec_type == type &&
4336 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4338 return i == st->index;
4342 } else if (*spec == 'p' && *(spec + 1) == ':') {
4346 prog_id = strtol(spec, &endptr, 0);
4347 for (i = 0; i < s->nb_programs; i++) {
4348 if (s->programs[i]->id != prog_id)
4351 if (*endptr++ == ':') {
4352 int stream_idx = strtol(endptr, NULL, 0);
4353 return stream_idx >= 0 &&
4354 stream_idx < s->programs[i]->nb_stream_indexes &&
4355 st->index == s->programs[i]->stream_index[stream_idx];
4358 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4359 if (st->index == s->programs[i]->stream_index[j])
4363 } else if (*spec == '#' ||
4364 (*spec == 'i' && *(spec + 1) == ':')) {
4367 spec += 1 + (*spec == 'i');
4368 stream_id = strtol(spec, &endptr, 0);
4370 return stream_id == st->id;
4371 } else if (*spec == 'm' && *(spec + 1) == ':') {
4372 AVDictionaryEntry *tag;
4377 val = strchr(spec, ':');
4379 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
4381 return AVERROR(ENOMEM);
4383 tag = av_dict_get(st->metadata, key, NULL, 0);
4385 if (!val || !strcmp(tag->value, val + 1))
4394 } else if (*spec == 'u') {
4395 AVCodecContext *avctx = st->codec;
4397 switch (avctx->codec_type) {
4398 case AVMEDIA_TYPE_AUDIO:
4399 val = avctx->sample_rate && avctx->channels;
4400 if (avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
4403 case AVMEDIA_TYPE_VIDEO:
4404 val = avctx->width && avctx->height;
4405 if (avctx->pix_fmt == AV_PIX_FMT_NONE)
4408 case AVMEDIA_TYPE_UNKNOWN:
4415 return avctx->codec_id != AV_CODEC_ID_NONE && val != 0;
4416 } else if (!*spec) /* empty specifier, matches everything */
4419 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4420 return AVERROR(EINVAL);
4423 int ff_generate_avci_extradata(AVStream *st)
4425 static const uint8_t avci100_1080p_extradata[] = {
4427 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4428 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4429 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4430 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4431 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4432 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4433 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4434 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4435 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4437 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4440 static const uint8_t avci100_1080i_extradata[] = {
4442 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4443 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4444 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4445 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4446 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4447 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4448 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4449 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4450 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4451 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4452 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
4454 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4457 static const uint8_t avci50_1080p_extradata[] = {
4459 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4460 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4461 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4462 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4463 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4464 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4465 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4466 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4467 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4469 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4472 static const uint8_t avci50_1080i_extradata[] = {
4474 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4475 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4476 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4477 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4478 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4479 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4480 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4481 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4482 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4483 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4484 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4486 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4489 static const uint8_t avci100_720p_extradata[] = {
4491 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4492 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4493 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4494 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4495 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4496 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4497 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4498 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4499 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4500 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4502 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4505 static const uint8_t avci50_720p_extradata[] = {
4507 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4508 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4509 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4510 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4511 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4512 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4513 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4514 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4515 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4517 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4521 const uint8_t *data = NULL;
4524 if (st->codec->width == 1920) {
4525 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4526 data = avci100_1080p_extradata;
4527 size = sizeof(avci100_1080p_extradata);
4529 data = avci100_1080i_extradata;
4530 size = sizeof(avci100_1080i_extradata);
4532 } else if (st->codec->width == 1440) {
4533 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4534 data = avci50_1080p_extradata;
4535 size = sizeof(avci50_1080p_extradata);
4537 data = avci50_1080i_extradata;
4538 size = sizeof(avci50_1080i_extradata);
4540 } else if (st->codec->width == 1280) {
4541 data = avci100_720p_extradata;
4542 size = sizeof(avci100_720p_extradata);
4543 } else if (st->codec->width == 960) {
4544 data = avci50_720p_extradata;
4545 size = sizeof(avci50_720p_extradata);
4551 av_freep(&st->codec->extradata);
4552 if (ff_alloc_extradata(st->codec, size))
4553 return AVERROR(ENOMEM);
4554 memcpy(st->codec->extradata, data, size);
4559 uint8_t *av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type,
4564 for (i = 0; i < st->nb_side_data; i++) {
4565 if (st->side_data[i].type == type) {
4567 *size = st->side_data[i].size;
4568 return st->side_data[i].data;
4574 uint8_t *ff_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
4577 AVPacketSideData *sd, *tmp;
4579 uint8_t *data = av_malloc(size);
4584 for (i = 0; i < st->nb_side_data; i++) {
4585 sd = &st->side_data[i];
4587 if (sd->type == type) {
4588 av_freep(&sd->data);
4595 tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
4601 st->side_data = tmp;
4604 sd = &st->side_data[st->nb_side_data - 1];