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
23 #include "avio_internal.h"
25 #include "libavcodec/internal.h"
26 #include "libavcodec/raw.h"
27 #include "libavcodec/bytestream.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/pixdesc.h"
34 #include "libavutil/avassert.h"
35 #include "libavutil/avstring.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/time.h"
39 #include "libavutil/timestamp.h"
41 #include "audiointerleave.h"
53 * various utility functions for use within FFmpeg
56 unsigned avformat_version(void)
58 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
59 return LIBAVFORMAT_VERSION_INT;
62 const char *avformat_configuration(void)
64 return FFMPEG_CONFIGURATION;
67 const char *avformat_license(void)
69 #define LICENSE_PREFIX "libavformat license: "
70 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
73 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
75 static int is_relative(int64_t ts) {
76 return ts > (RELATIVE_TS_BASE - (1LL<<48));
80 * Wrap a given time stamp, if there is an indication for an overflow
83 * @param timestamp the time stamp to wrap
84 * @return resulting time stamp
86 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
88 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
89 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
90 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
91 timestamp < st->pts_wrap_reference)
92 return timestamp + (1ULL<<st->pts_wrap_bits);
93 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
94 timestamp >= st->pts_wrap_reference)
95 return timestamp - (1ULL<<st->pts_wrap_bits);
100 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
101 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
102 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
103 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
105 static AVCodec *find_decoder(AVFormatContext *s, AVStream *st, enum AVCodecID codec_id)
107 if (st->codec->codec)
108 return st->codec->codec;
110 switch(st->codec->codec_type){
111 case AVMEDIA_TYPE_VIDEO:
112 if(s->video_codec) return s->video_codec;
114 case AVMEDIA_TYPE_AUDIO:
115 if(s->audio_codec) return s->audio_codec;
117 case AVMEDIA_TYPE_SUBTITLE:
118 if(s->subtitle_codec) return s->subtitle_codec;
122 return avcodec_find_decoder(codec_id);
125 int av_format_get_probe_score(const AVFormatContext *s)
127 return s->probe_score;
130 /* an arbitrarily chosen "sane" max packet size -- 50M */
131 #define SANE_CHUNK_SIZE (50000000)
133 int ffio_limit(AVIOContext *s, int size)
136 int64_t remaining= s->maxsize - avio_tell(s);
137 if(remaining < size){
138 int64_t newsize= avio_size(s);
139 if(!s->maxsize || s->maxsize<newsize)
140 s->maxsize= newsize - !newsize;
141 remaining= s->maxsize - avio_tell(s);
142 remaining= FFMAX(remaining, 0);
145 if(s->maxsize>=0 && remaining+1 < size){
146 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
154 * Read the data in sane-sized chunks and append to pkt.
155 * Return the number of bytes read or an error.
157 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
159 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
160 int orig_size = pkt->size;
164 int prev_size = pkt->size;
168 * When the caller requests a lot of data, limit it to the amount left
169 * in file or SANE_CHUNK_SIZE when it is not known
172 if (read_size > SANE_CHUNK_SIZE/10) {
173 read_size = ffio_limit(s, read_size);
174 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
176 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
179 ret = av_grow_packet(pkt, read_size);
183 ret = avio_read(s, pkt->data + prev_size, read_size);
184 if (ret != read_size) {
185 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
192 pkt->flags |= AV_PKT_FLAG_CORRUPT;
197 return pkt->size > orig_size ? pkt->size - orig_size : ret;
200 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
205 pkt->pos = avio_tell(s);
207 return append_packet_chunked(s, pkt, size);
210 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
213 return av_get_packet(s, pkt, size);
214 return append_packet_chunked(s, pkt, size);
218 int av_filename_number_test(const char *filename)
221 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
224 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
226 AVProbeData lpd = *pd;
227 AVInputFormat *fmt1 = NULL, *fmt;
228 int score, nodat = 0, score_max=0;
229 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
232 lpd.buf = zerobuffer;
234 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
235 int id3len = ff_id3v2_tag_len(lpd.buf);
236 if (lpd.buf_size > id3len + 16) {
238 lpd.buf_size -= id3len;
244 while ((fmt1 = av_iformat_next(fmt1))) {
245 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
248 if (fmt1->read_probe) {
249 score = fmt1->read_probe(&lpd);
250 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
251 score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
252 } else if (fmt1->extensions) {
253 if (av_match_ext(lpd.filename, fmt1->extensions)) {
254 score = AVPROBE_SCORE_EXTENSION;
257 if (score > score_max) {
260 }else if (score == score_max)
264 score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
265 *score_ret= score_max;
270 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
273 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
274 if(score_ret > *score_max){
275 *score_max= score_ret;
281 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
283 return av_probe_input_format2(pd, is_opened, &score);
286 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
288 static const struct {
289 const char *name; enum AVCodecID id; enum AVMediaType type;
291 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
292 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
293 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
294 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
295 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
296 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
297 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
298 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
299 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
303 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
305 if (fmt && st->request_probe <= score) {
307 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
308 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
309 for (i = 0; fmt_id_type[i].name; i++) {
310 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
311 st->codec->codec_id = fmt_id_type[i].id;
312 st->codec->codec_type = fmt_id_type[i].type;
320 /************************************************************/
321 /* input media file */
323 int av_demuxer_open(AVFormatContext *ic){
326 if (ic->iformat->read_header) {
327 err = ic->iformat->read_header(ic);
332 if (ic->pb && !ic->data_offset)
333 ic->data_offset = avio_tell(ic->pb);
339 int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
340 const char *filename, void *logctx,
341 unsigned int offset, unsigned int max_probe_size)
343 AVProbeData pd = { filename ? filename : "", NULL, -offset };
344 unsigned char *buf = NULL;
346 int ret = 0, probe_size, buf_offset = 0;
349 if (!max_probe_size) {
350 max_probe_size = PROBE_BUF_MAX;
351 } else if (max_probe_size > PROBE_BUF_MAX) {
352 max_probe_size = PROBE_BUF_MAX;
353 } else if (max_probe_size < PROBE_BUF_MIN) {
354 av_log(logctx, AV_LOG_ERROR,
355 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
356 return AVERROR(EINVAL);
359 if (offset >= max_probe_size) {
360 return AVERROR(EINVAL);
363 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
364 if (!av_strcasecmp(mime_type, "audio/aacp")) {
365 *fmt = av_find_input_format("aac");
367 av_freep(&mime_type);
370 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
371 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
373 if (probe_size < offset) {
376 score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
378 /* read probe data */
379 if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0)
381 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
382 /* fail if error was not end of file, otherwise, lower score */
383 if (ret != AVERROR_EOF) {
388 ret = 0; /* error was end of file, nothing read */
390 pd.buf_size = buf_offset += ret;
391 pd.buf = &buf[offset];
393 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
395 /* guess file format */
396 *fmt = av_probe_input_format2(&pd, 1, &score);
398 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
399 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
401 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
407 return AVERROR_INVALIDDATA;
410 /* rewind. reuse probe buffer to avoid seeking */
411 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
413 return ret < 0 ? ret : score;
416 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
417 const char *filename, void *logctx,
418 unsigned int offset, unsigned int max_probe_size)
420 int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size);
421 return ret < 0 ? ret : 0;
425 /* open input file and probe the format if necessary */
426 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
429 AVProbeData pd = {filename, NULL, 0};
430 int score = AVPROBE_SCORE_RETRY;
433 s->flags |= AVFMT_FLAG_CUSTOM_IO;
435 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
436 else if (s->iformat->flags & AVFMT_NOFILE)
437 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
438 "will be ignored with AVFMT_NOFILE format.\n");
442 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
443 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
446 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
447 &s->interrupt_callback, options)) < 0)
451 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
454 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
455 AVPacketList **plast_pktl){
456 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
461 (*plast_pktl)->next = pktl;
463 *packet_buffer = pktl;
465 /* add the packet in the buffered packet list */
471 int avformat_queue_attached_pictures(AVFormatContext *s)
474 for (i = 0; i < s->nb_streams; i++)
475 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
476 s->streams[i]->discard < AVDISCARD_ALL) {
477 AVPacket copy = s->streams[i]->attached_pic;
478 copy.buf = av_buffer_ref(copy.buf);
480 return AVERROR(ENOMEM);
482 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
487 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
489 AVFormatContext *s = *ps;
491 AVDictionary *tmp = NULL;
492 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
494 if (!s && !(s = avformat_alloc_context()))
495 return AVERROR(ENOMEM);
497 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
498 return AVERROR(EINVAL);
504 av_dict_copy(&tmp, *options, 0);
506 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
509 if ((ret = init_input(s, filename, &tmp)) < 0)
511 s->probe_score = ret;
512 avio_skip(s->pb, s->skip_initial_bytes);
514 /* check filename in case an image number is expected */
515 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
516 if (!av_filename_number_test(filename)) {
517 ret = AVERROR(EINVAL);
522 s->duration = s->start_time = AV_NOPTS_VALUE;
523 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
525 /* allocate private data */
526 if (s->iformat->priv_data_size > 0) {
527 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
528 ret = AVERROR(ENOMEM);
531 if (s->iformat->priv_class) {
532 *(const AVClass**)s->priv_data = s->iformat->priv_class;
533 av_opt_set_defaults(s->priv_data);
534 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
539 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
541 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
543 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
544 if ((ret = s->iformat->read_header(s)) < 0)
547 if (id3v2_extra_meta) {
548 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
549 !strcmp(s->iformat->name, "tta")) {
550 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
553 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
555 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
557 if ((ret = avformat_queue_attached_pictures(s)) < 0)
560 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
561 s->data_offset = avio_tell(s->pb);
563 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
566 av_dict_free(options);
573 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
575 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
577 avformat_free_context(s);
582 /*******************************************************/
584 static void force_codec_ids(AVFormatContext *s, AVStream *st)
586 switch(st->codec->codec_type){
587 case AVMEDIA_TYPE_VIDEO:
588 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
590 case AVMEDIA_TYPE_AUDIO:
591 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
593 case AVMEDIA_TYPE_SUBTITLE:
594 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
599 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
601 if(st->request_probe>0){
602 AVProbeData *pd = &st->probe_data;
604 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
608 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
610 av_log(s, AV_LOG_WARNING,
611 "Failed to reallocate probe buffer for stream %d\n",
616 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
617 pd->buf_size += pkt->size;
618 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
621 st->probe_packets = 0;
623 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
628 end= s->raw_packet_buffer_remaining_size <= 0
629 || st->probe_packets<=0;
631 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
632 int score= set_codec_from_probe_data(s, st, pd);
633 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
637 st->request_probe= -1;
638 if(st->codec->codec_id != AV_CODEC_ID_NONE){
639 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
641 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
643 force_codec_ids(s, st);
649 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
655 AVPacketList *pktl = s->raw_packet_buffer;
659 st = s->streams[pkt->stream_index];
660 if (s->raw_packet_buffer_remaining_size <= 0) {
661 if ((err = probe_codec(s, st, NULL)) < 0)
664 if(st->request_probe <= 0){
665 s->raw_packet_buffer = pktl->next;
666 s->raw_packet_buffer_remaining_size += pkt->size;
675 ret= s->iformat->read_packet(s, pkt);
677 if (!pktl || ret == AVERROR(EAGAIN))
679 for (i = 0; i < s->nb_streams; i++) {
681 if (st->probe_packets) {
682 if ((err = probe_codec(s, st, NULL)) < 0)
685 av_assert0(st->request_probe <= 0);
690 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
691 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
692 av_log(s, AV_LOG_WARNING,
693 "Dropped corrupted packet (stream = %d)\n",
699 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
700 av_packet_merge_side_data(pkt);
702 if(pkt->stream_index >= (unsigned)s->nb_streams){
703 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
707 st= s->streams[pkt->stream_index];
708 pkt->dts = wrap_timestamp(st, pkt->dts);
709 pkt->pts = wrap_timestamp(st, pkt->pts);
711 force_codec_ids(s, st);
713 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
714 if (s->use_wallclock_as_timestamps)
715 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
717 if(!pktl && st->request_probe <= 0)
720 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
721 s->raw_packet_buffer_remaining_size -= pkt->size;
723 if ((err = probe_codec(s, st, pkt)) < 0)
728 #if FF_API_READ_PACKET
729 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
731 return ff_read_packet(s, pkt);
736 /**********************************************************/
738 static int determinable_frame_size(AVCodecContext *avctx)
740 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
741 avctx->codec_id == AV_CODEC_ID_MP1 ||
742 avctx->codec_id == AV_CODEC_ID_MP2 ||
743 avctx->codec_id == AV_CODEC_ID_MP3/* ||
744 avctx->codec_id == AV_CODEC_ID_CELT*/)
750 * Get the number of samples of an audio frame. Return -1 on error.
752 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
756 /* give frame_size priority if demuxing */
757 if (!mux && enc->frame_size > 1)
758 return enc->frame_size;
760 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
763 /* Fall back on using frame_size if muxing. */
764 if (enc->frame_size > 1)
765 return enc->frame_size;
767 //For WMA we currently have no other means to calculate duration thus we
768 //do it here by assuming CBR, which is true for all known cases.
769 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
770 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
771 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
779 * Return the frame duration in seconds. Return 0 if not available.
781 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
782 AVCodecParserContext *pc, AVPacket *pkt)
788 switch(st->codec->codec_type) {
789 case AVMEDIA_TYPE_VIDEO:
790 if (st->r_frame_rate.num && !pc) {
791 *pnum = st->r_frame_rate.den;
792 *pden = st->r_frame_rate.num;
793 } else if(st->time_base.num*1000LL > st->time_base.den) {
794 *pnum = st->time_base.num;
795 *pden = st->time_base.den;
796 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
797 *pnum = st->codec->time_base.num;
798 *pden = st->codec->time_base.den;
799 if (pc && pc->repeat_pict) {
800 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
801 *pden /= 1 + pc->repeat_pict;
803 *pnum *= 1 + pc->repeat_pict;
805 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
806 //Thus if we have no parser in such case leave duration undefined.
807 if(st->codec->ticks_per_frame>1 && !pc){
812 case AVMEDIA_TYPE_AUDIO:
813 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
814 if (frame_size <= 0 || st->codec->sample_rate <= 0)
817 *pden = st->codec->sample_rate;
824 static int is_intra_only(AVCodecContext *enc){
825 const AVCodecDescriptor *desc;
827 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
830 desc = av_codec_get_codec_descriptor(enc);
832 desc = avcodec_descriptor_get(enc->codec_id);
833 av_codec_set_codec_descriptor(enc, desc);
836 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
840 static int has_decode_delay_been_guessed(AVStream *st)
842 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
843 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
845 #if CONFIG_H264_DECODER
846 if(st->codec->has_b_frames &&
847 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
850 if(st->codec->has_b_frames<3)
851 return st->nb_decoded_frames >= 7;
852 else if(st->codec->has_b_frames<4)
853 return st->nb_decoded_frames >= 18;
855 return st->nb_decoded_frames >= 20;
858 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
862 if (pktl == s->parse_queue_end)
863 return s->packet_buffer;
867 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
869 if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
870 st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
873 // reference time stamp should be 60 s before first time stamp
874 int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
875 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
876 int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
877 (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
878 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
880 AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
882 if (!first_program) {
883 int default_stream_index = av_find_default_stream_index(s);
884 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
885 for (i=0; i<s->nb_streams; i++) {
886 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
887 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
891 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
892 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
896 AVProgram *program = first_program;
898 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
899 pts_wrap_reference = program->pts_wrap_reference;
900 pts_wrap_behavior = program->pts_wrap_behavior;
903 program = av_find_program_from_stream(s, program, stream_index);
906 // update every program with differing pts_wrap_reference
907 program = first_program;
909 if (program->pts_wrap_reference != pts_wrap_reference) {
910 for (i=0; i<program->nb_stream_indexes; i++) {
911 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
912 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
915 program->pts_wrap_reference = pts_wrap_reference;
916 program->pts_wrap_behavior = pts_wrap_behavior;
918 program = av_find_program_from_stream(s, program, stream_index);
926 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
927 int64_t dts, int64_t pts, AVPacket *pkt)
929 AVStream *st= s->streams[stream_index];
930 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
931 int64_t pts_buffer[MAX_REORDER_DELAY+1];
935 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
938 delay = st->codec->has_b_frames;
939 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
941 shift = st->first_dts - RELATIVE_TS_BASE;
943 for (i=0; i<MAX_REORDER_DELAY+1; i++)
944 pts_buffer[i] = AV_NOPTS_VALUE;
946 if (is_relative(pts))
949 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
950 if(pktl->pkt.stream_index != stream_index)
952 if(is_relative(pktl->pkt.pts))
953 pktl->pkt.pts += shift;
955 if(is_relative(pktl->pkt.dts))
956 pktl->pkt.dts += shift;
958 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
959 st->start_time= pktl->pkt.pts;
961 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
962 pts_buffer[0]= pktl->pkt.pts;
963 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
964 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
965 if(pktl->pkt.dts == AV_NOPTS_VALUE)
966 pktl->pkt.dts= pts_buffer[0];
970 if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
971 // correct first time stamps to negative values
972 st->first_dts = wrap_timestamp(st, st->first_dts);
973 st->cur_dts = wrap_timestamp(st, st->cur_dts);
974 pkt->dts = wrap_timestamp(st, pkt->dts);
975 pkt->pts = wrap_timestamp(st, pkt->pts);
976 pts = wrap_timestamp(st, pts);
979 if (st->start_time == AV_NOPTS_VALUE)
980 st->start_time = pts;
983 static void update_initial_durations(AVFormatContext *s, AVStream *st,
984 int stream_index, int duration)
986 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
987 int64_t cur_dts= RELATIVE_TS_BASE;
989 if(st->first_dts != AV_NOPTS_VALUE){
990 cur_dts= st->first_dts;
991 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
992 if(pktl->pkt.stream_index == stream_index){
993 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
998 if(pktl && pktl->pkt.dts != st->first_dts) {
999 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s in the queue\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
1003 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1006 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1007 st->first_dts = cur_dts;
1008 }else if(st->cur_dts != RELATIVE_TS_BASE)
1011 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1012 if(pktl->pkt.stream_index != stream_index)
1014 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1015 && !pktl->pkt.duration){
1016 pktl->pkt.dts= cur_dts;
1017 if(!st->codec->has_b_frames)
1018 pktl->pkt.pts= cur_dts;
1019 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1020 pktl->pkt.duration = duration;
1023 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1026 st->cur_dts= cur_dts;
1029 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1030 AVCodecParserContext *pc, AVPacket *pkt)
1032 int num, den, presentation_delayed, delay, i;
1035 if (s->flags & AVFMT_FLAG_NOFILLIN)
1038 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1039 pkt->dts= AV_NOPTS_VALUE;
1041 if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1042 //FIXME Set low_delay = 0 when has_b_frames = 1
1043 st->codec->has_b_frames = 1;
1045 /* do we have a video B-frame ? */
1046 delay= st->codec->has_b_frames;
1047 presentation_delayed = 0;
1049 /* XXX: need has_b_frame, but cannot get it if the codec is
1052 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1053 presentation_delayed = 1;
1055 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1056 st->pts_wrap_bits < 63 &&
1057 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1058 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1059 pkt->dts -= 1LL<<st->pts_wrap_bits;
1061 pkt->pts += 1LL<<st->pts_wrap_bits;
1064 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1065 // we take the conservative approach and discard both
1066 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1067 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1068 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1069 if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1070 pkt->dts= AV_NOPTS_VALUE;
1073 if (pkt->duration == 0) {
1074 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1076 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1079 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1080 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1082 /* correct timestamps with byte offset if demuxers only have timestamps
1083 on packet boundaries */
1084 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1085 /* this will estimate bitrate based on this frame's duration and size */
1086 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1087 if(pkt->pts != AV_NOPTS_VALUE)
1089 if(pkt->dts != AV_NOPTS_VALUE)
1093 if (pc && pc->dts_sync_point >= 0) {
1094 // we have synchronization info from the parser
1095 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1097 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1098 if (pkt->dts != AV_NOPTS_VALUE) {
1099 // got DTS from the stream, update reference timestamp
1100 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1101 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1102 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1103 // compute DTS based on reference timestamp
1104 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1105 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1107 if (pc->dts_sync_point > 0)
1108 st->reference_dts = pkt->dts; // new reference
1112 /* This may be redundant, but it should not hurt. */
1113 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1114 presentation_delayed = 1;
1116 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1117 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1118 /* interpolate PTS and DTS if they are not present */
1119 //We skip H264 currently because delay and has_b_frames are not reliably set
1120 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1121 if (presentation_delayed) {
1122 /* DTS = decompression timestamp */
1123 /* PTS = presentation timestamp */
1124 if (pkt->dts == AV_NOPTS_VALUE)
1125 pkt->dts = st->last_IP_pts;
1126 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1127 if (pkt->dts == AV_NOPTS_VALUE)
1128 pkt->dts = st->cur_dts;
1130 /* this is tricky: the dts must be incremented by the duration
1131 of the frame we are displaying, i.e. the last I- or P-frame */
1132 if (st->last_IP_duration == 0)
1133 st->last_IP_duration = pkt->duration;
1134 if(pkt->dts != AV_NOPTS_VALUE)
1135 st->cur_dts = pkt->dts + st->last_IP_duration;
1136 st->last_IP_duration = pkt->duration;
1137 st->last_IP_pts= pkt->pts;
1138 /* cannot compute PTS if not present (we can compute it only
1139 by knowing the future */
1140 } else if (pkt->pts != AV_NOPTS_VALUE ||
1141 pkt->dts != AV_NOPTS_VALUE ||
1143 int duration = pkt->duration;
1145 /* presentation is not delayed : PTS and DTS are the same */
1146 if (pkt->pts == AV_NOPTS_VALUE)
1147 pkt->pts = pkt->dts;
1148 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1150 if (pkt->pts == AV_NOPTS_VALUE)
1151 pkt->pts = st->cur_dts;
1152 pkt->dts = pkt->pts;
1153 if (pkt->pts != AV_NOPTS_VALUE)
1154 st->cur_dts = pkt->pts + duration;
1158 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1159 st->pts_buffer[0]= pkt->pts;
1160 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1161 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1162 if(pkt->dts == AV_NOPTS_VALUE)
1163 pkt->dts= st->pts_buffer[0];
1165 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1166 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1168 if(pkt->dts > st->cur_dts)
1169 st->cur_dts = pkt->dts;
1171 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1172 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1175 if (is_intra_only(st->codec))
1176 pkt->flags |= AV_PKT_FLAG_KEY;
1178 pkt->convergence_duration = pc->convergence_duration;
1181 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1184 AVPacketList *pktl = *pkt_buf;
1185 *pkt_buf = pktl->next;
1186 av_free_packet(&pktl->pkt);
1189 *pkt_buf_end = NULL;
1193 * Parse a packet, add all split parts to parse_queue
1195 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1197 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1199 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1200 AVStream *st = s->streams[stream_index];
1201 uint8_t *data = pkt ? pkt->data : NULL;
1202 int size = pkt ? pkt->size : 0;
1203 int ret = 0, got_output = 0;
1206 av_init_packet(&flush_pkt);
1209 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1210 // preserve 0-size sync packets
1211 compute_pkt_fields(s, st, st->parser, pkt);
1214 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1217 av_init_packet(&out_pkt);
1218 len = av_parser_parse2(st->parser, st->codec,
1219 &out_pkt.data, &out_pkt.size, data, size,
1220 pkt->pts, pkt->dts, pkt->pos);
1222 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1224 /* increment read pointer */
1228 got_output = !!out_pkt.size;
1233 if (pkt->side_data) {
1234 out_pkt.side_data = pkt->side_data;
1235 out_pkt.side_data_elems = pkt->side_data_elems;
1236 pkt->side_data = NULL;
1237 pkt->side_data_elems = 0;
1240 /* set the duration */
1241 out_pkt.duration = 0;
1242 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1243 if (st->codec->sample_rate > 0) {
1244 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1245 (AVRational){ 1, st->codec->sample_rate },
1249 } else if (st->codec->time_base.num != 0 &&
1250 st->codec->time_base.den != 0) {
1251 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1252 st->codec->time_base,
1257 out_pkt.stream_index = st->index;
1258 out_pkt.pts = st->parser->pts;
1259 out_pkt.dts = st->parser->dts;
1260 out_pkt.pos = st->parser->pos;
1262 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1263 out_pkt.pos = st->parser->frame_offset;
1265 if (st->parser->key_frame == 1 ||
1266 (st->parser->key_frame == -1 &&
1267 st->parser->pict_type == AV_PICTURE_TYPE_I))
1268 out_pkt.flags |= AV_PKT_FLAG_KEY;
1270 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1271 out_pkt.flags |= AV_PKT_FLAG_KEY;
1273 compute_pkt_fields(s, st, st->parser, &out_pkt);
1275 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1276 out_pkt.buf = pkt->buf;
1278 #if FF_API_DESTRUCT_PACKET
1279 FF_DISABLE_DEPRECATION_WARNINGS
1280 out_pkt.destruct = pkt->destruct;
1281 pkt->destruct = NULL;
1282 FF_ENABLE_DEPRECATION_WARNINGS
1285 if ((ret = av_dup_packet(&out_pkt)) < 0)
1288 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1289 av_free_packet(&out_pkt);
1290 ret = AVERROR(ENOMEM);
1296 /* end of the stream => close and free the parser */
1297 if (pkt == &flush_pkt) {
1298 av_parser_close(st->parser);
1303 av_free_packet(pkt);
1307 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1308 AVPacketList **pkt_buffer_end,
1312 av_assert0(*pkt_buffer);
1315 *pkt_buffer = pktl->next;
1317 *pkt_buffer_end = NULL;
1322 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1324 int ret = 0, i, got_packet = 0;
1326 av_init_packet(pkt);
1328 while (!got_packet && !s->parse_queue) {
1332 /* read next packet */
1333 ret = ff_read_packet(s, &cur_pkt);
1335 if (ret == AVERROR(EAGAIN))
1337 /* flush the parsers */
1338 for(i = 0; i < s->nb_streams; i++) {
1340 if (st->parser && st->need_parsing)
1341 parse_packet(s, NULL, st->index);
1343 /* all remaining packets are now in parse_queue =>
1344 * really terminate parsing */
1348 st = s->streams[cur_pkt.stream_index];
1350 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1351 cur_pkt.dts != AV_NOPTS_VALUE &&
1352 cur_pkt.pts < cur_pkt.dts) {
1353 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1354 cur_pkt.stream_index,
1355 av_ts2str(cur_pkt.pts),
1356 av_ts2str(cur_pkt.dts),
1359 if (s->debug & FF_FDEBUG_TS)
1360 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1361 cur_pkt.stream_index,
1362 av_ts2str(cur_pkt.pts),
1363 av_ts2str(cur_pkt.dts),
1368 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1369 st->parser = av_parser_init(st->codec->codec_id);
1371 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1372 "%s, packets or times may be invalid.\n",
1373 avcodec_get_name(st->codec->codec_id));
1374 /* no parser available: just output the raw packets */
1375 st->need_parsing = AVSTREAM_PARSE_NONE;
1376 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1377 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1378 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1379 st->parser->flags |= PARSER_FLAG_ONCE;
1380 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1381 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1385 if (!st->need_parsing || !st->parser) {
1386 /* no parsing needed: we just output the packet as is */
1388 compute_pkt_fields(s, st, NULL, pkt);
1389 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1390 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1391 ff_reduce_index(s, st->index);
1392 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1395 } else if (st->discard < AVDISCARD_ALL) {
1396 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1400 av_free_packet(&cur_pkt);
1402 if (pkt->flags & AV_PKT_FLAG_KEY)
1403 st->skip_to_keyframe = 0;
1404 if (st->skip_to_keyframe) {
1405 av_free_packet(&cur_pkt);
1413 if (!got_packet && s->parse_queue)
1414 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1416 if(s->debug & FF_FDEBUG_TS)
1417 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1419 av_ts2str(pkt->pts),
1420 av_ts2str(pkt->dts),
1428 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1430 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1436 ret = s->packet_buffer ?
1437 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1438 read_frame_internal(s, pkt);
1445 AVPacketList *pktl = s->packet_buffer;
1448 AVPacket *next_pkt = &pktl->pkt;
1450 if (next_pkt->dts != AV_NOPTS_VALUE) {
1451 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1452 // last dts seen for this stream. if any of packets following
1453 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1454 int64_t last_dts = next_pkt->dts;
1455 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1456 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1457 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1458 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1459 next_pkt->pts = pktl->pkt.dts;
1461 if (last_dts != AV_NOPTS_VALUE) {
1462 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1463 last_dts = pktl->pkt.dts;
1468 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1469 // Fixing the last reference frame had none pts issue (For MXF etc).
1470 // We only do this when
1472 // 2. we are not able to resolve a pts value for current packet.
1473 // 3. the packets for this stream at the end of the files had valid dts.
1474 next_pkt->pts = last_dts + next_pkt->duration;
1476 pktl = s->packet_buffer;
1479 /* read packet from packet buffer, if there is data */
1480 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1481 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1482 ret = read_from_packet_buffer(&s->packet_buffer,
1483 &s->packet_buffer_end, pkt);
1488 ret = read_frame_internal(s, pkt);
1490 if (pktl && ret != AVERROR(EAGAIN)) {
1497 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1498 &s->packet_buffer_end)) < 0)
1499 return AVERROR(ENOMEM);
1504 st = s->streams[pkt->stream_index];
1505 if (st->skip_samples) {
1506 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1508 AV_WL32(p, st->skip_samples);
1509 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1511 st->skip_samples = 0;
1514 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1515 ff_reduce_index(s, st->index);
1516 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1519 if (is_relative(pkt->dts))
1520 pkt->dts -= RELATIVE_TS_BASE;
1521 if (is_relative(pkt->pts))
1522 pkt->pts -= RELATIVE_TS_BASE;
1527 /* XXX: suppress the packet queue */
1528 static void flush_packet_queue(AVFormatContext *s)
1530 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1531 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1532 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1534 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1537 /*******************************************************/
1540 int av_find_default_stream_index(AVFormatContext *s)
1542 int first_audio_index = -1;
1546 if (s->nb_streams <= 0)
1548 for(i = 0; i < s->nb_streams; i++) {
1550 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1551 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1554 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1555 first_audio_index = i;
1557 return first_audio_index >= 0 ? first_audio_index : 0;
1561 * Flush the frame reader.
1563 void ff_read_frame_flush(AVFormatContext *s)
1568 flush_packet_queue(s);
1570 /* for each stream, reset read state */
1571 for(i = 0; i < s->nb_streams; i++) {
1575 av_parser_close(st->parser);
1578 st->last_IP_pts = AV_NOPTS_VALUE;
1579 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1580 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1581 st->reference_dts = AV_NOPTS_VALUE;
1583 st->probe_packets = MAX_PROBE_PACKETS;
1585 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1586 st->pts_buffer[j]= AV_NOPTS_VALUE;
1590 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1594 for(i = 0; i < s->nb_streams; i++) {
1595 AVStream *st = s->streams[i];
1597 st->cur_dts = av_rescale(timestamp,
1598 st->time_base.den * (int64_t)ref_st->time_base.num,
1599 st->time_base.num * (int64_t)ref_st->time_base.den);
1603 void ff_reduce_index(AVFormatContext *s, int stream_index)
1605 AVStream *st= s->streams[stream_index];
1606 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1608 if((unsigned)st->nb_index_entries >= max_entries){
1610 for(i=0; 2*i<st->nb_index_entries; i++)
1611 st->index_entries[i]= st->index_entries[2*i];
1612 st->nb_index_entries= i;
1616 int ff_add_index_entry(AVIndexEntry **index_entries,
1617 int *nb_index_entries,
1618 unsigned int *index_entries_allocated_size,
1619 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1621 AVIndexEntry *entries, *ie;
1624 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1627 if(timestamp == AV_NOPTS_VALUE)
1628 return AVERROR(EINVAL);
1630 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1631 timestamp -= RELATIVE_TS_BASE;
1633 entries = av_fast_realloc(*index_entries,
1634 index_entries_allocated_size,
1635 (*nb_index_entries + 1) *
1636 sizeof(AVIndexEntry));
1640 *index_entries= entries;
1642 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1645 index= (*nb_index_entries)++;
1646 ie= &entries[index];
1647 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1649 ie= &entries[index];
1650 if(ie->timestamp != timestamp){
1651 if(ie->timestamp <= timestamp)
1653 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1654 (*nb_index_entries)++;
1655 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1656 distance= ie->min_distance;
1660 ie->timestamp = timestamp;
1661 ie->min_distance= distance;
1668 int av_add_index_entry(AVStream *st,
1669 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1671 timestamp = wrap_timestamp(st, timestamp);
1672 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1673 &st->index_entries_allocated_size, pos,
1674 timestamp, size, distance, flags);
1677 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1678 int64_t wanted_timestamp, int flags)
1686 //optimize appending index entries at the end
1687 if(b && entries[b-1].timestamp < wanted_timestamp)
1692 timestamp = entries[m].timestamp;
1693 if(timestamp >= wanted_timestamp)
1695 if(timestamp <= wanted_timestamp)
1698 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1700 if(!(flags & AVSEEK_FLAG_ANY)){
1701 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1702 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1711 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1714 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1715 wanted_timestamp, flags);
1718 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1719 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1721 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1722 if (stream_index >= 0)
1723 ts = wrap_timestamp(s->streams[stream_index], ts);
1727 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1729 AVInputFormat *avif= s->iformat;
1730 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1731 int64_t ts_min, ts_max, ts;
1736 if (stream_index < 0)
1739 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1742 ts_min= AV_NOPTS_VALUE;
1743 pos_limit= -1; //gcc falsely says it may be uninitialized
1745 st= s->streams[stream_index];
1746 if(st->index_entries){
1749 index= av_index_search_timestamp(st, target_ts, flags | AVSEEK_FLAG_BACKWARD); //FIXME whole func must be checked for non-keyframe entries in index case, especially read_timestamp()
1750 index= FFMAX(index, 0);
1751 e= &st->index_entries[index];
1753 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1755 ts_min= e->timestamp;
1756 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1757 pos_min, av_ts2str(ts_min));
1759 av_assert1(index==0);
1762 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1763 av_assert0(index < st->nb_index_entries);
1765 e= &st->index_entries[index];
1766 av_assert1(e->timestamp >= target_ts);
1768 ts_max= e->timestamp;
1769 pos_limit= pos_max - e->min_distance;
1770 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1771 pos_max, pos_limit, av_ts2str(ts_max));
1775 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1780 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1783 ff_read_frame_flush(s);
1784 ff_update_cur_dts(s, st, ts);
1789 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1790 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1793 int64_t limit, ts_max;
1794 int64_t filesize = avio_size(s->pb);
1795 int64_t pos_max = filesize - 1;
1798 pos_max = FFMAX(0, (pos_max) - step);
1799 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1801 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1802 if (ts_max == AV_NOPTS_VALUE)
1806 int64_t tmp_pos = pos_max + 1;
1807 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1808 if(tmp_ts == AV_NOPTS_VALUE)
1810 av_assert0(tmp_pos > pos_max);
1813 if(tmp_pos >= filesize)
1825 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1826 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1827 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1828 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1835 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1837 if(ts_min == AV_NOPTS_VALUE){
1838 pos_min = s->data_offset;
1839 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1840 if (ts_min == AV_NOPTS_VALUE)
1844 if(ts_min >= target_ts){
1849 if(ts_max == AV_NOPTS_VALUE){
1850 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1855 if(ts_max <= target_ts){
1860 if(ts_min > ts_max){
1862 }else if(ts_min == ts_max){
1867 while (pos_min < pos_limit) {
1868 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1869 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1870 assert(pos_limit <= pos_max);
1873 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1874 // interpolate position (better than dichotomy)
1875 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1876 + pos_min - approximate_keyframe_distance;
1877 }else if(no_change==1){
1878 // bisection, if interpolation failed to change min or max pos last time
1879 pos = (pos_min + pos_limit)>>1;
1881 /* linear search if bisection failed, can only happen if there
1882 are very few or no keyframes between min/max */
1887 else if(pos > pos_limit)
1891 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1896 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1897 pos_min, pos, pos_max,
1898 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1899 pos_limit, start_pos, no_change);
1900 if(ts == AV_NOPTS_VALUE){
1901 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1904 assert(ts != AV_NOPTS_VALUE);
1905 if (target_ts <= ts) {
1906 pos_limit = start_pos - 1;
1910 if (target_ts >= ts) {
1916 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1917 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1920 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1922 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1923 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1924 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1930 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1931 int64_t pos_min, pos_max;
1933 pos_min = s->data_offset;
1934 pos_max = avio_size(s->pb) - 1;
1936 if (pos < pos_min) pos= pos_min;
1937 else if(pos > pos_max) pos= pos_max;
1939 avio_seek(s->pb, pos, SEEK_SET);
1941 s->io_repositioned = 1;
1946 static int seek_frame_generic(AVFormatContext *s,
1947 int stream_index, int64_t timestamp, int flags)
1954 st = s->streams[stream_index];
1956 index = av_index_search_timestamp(st, timestamp, flags);
1958 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1961 if(index < 0 || index==st->nb_index_entries-1){
1965 if(st->nb_index_entries){
1966 av_assert0(st->index_entries);
1967 ie= &st->index_entries[st->nb_index_entries-1];
1968 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1970 ff_update_cur_dts(s, st, ie->timestamp);
1972 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1978 read_status = av_read_frame(s, &pkt);
1979 } while (read_status == AVERROR(EAGAIN));
1980 if (read_status < 0)
1982 av_free_packet(&pkt);
1983 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1984 if(pkt.flags & AV_PKT_FLAG_KEY)
1986 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1987 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);
1992 index = av_index_search_timestamp(st, timestamp, flags);
1997 ff_read_frame_flush(s);
1998 if (s->iformat->read_seek){
1999 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2002 ie = &st->index_entries[index];
2003 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2005 ff_update_cur_dts(s, st, ie->timestamp);
2010 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2011 int64_t timestamp, int flags)
2016 if (flags & AVSEEK_FLAG_BYTE) {
2017 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2019 ff_read_frame_flush(s);
2020 return seek_frame_byte(s, stream_index, timestamp, flags);
2023 if(stream_index < 0){
2024 stream_index= av_find_default_stream_index(s);
2025 if(stream_index < 0)
2028 st= s->streams[stream_index];
2029 /* timestamp for default must be expressed in AV_TIME_BASE units */
2030 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2033 /* first, we try the format specific seek */
2034 if (s->iformat->read_seek) {
2035 ff_read_frame_flush(s);
2036 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2043 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2044 ff_read_frame_flush(s);
2045 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2046 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2047 ff_read_frame_flush(s);
2048 return seek_frame_generic(s, stream_index, timestamp, flags);
2054 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2058 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2059 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2060 if ((flags & AVSEEK_FLAG_BACKWARD))
2064 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2065 flags & ~AVSEEK_FLAG_BACKWARD);
2068 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2071 ret = avformat_queue_attached_pictures(s);
2076 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2078 if(min_ts > ts || max_ts < ts)
2080 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2081 return AVERROR(EINVAL);
2084 flags |= AVSEEK_FLAG_ANY;
2085 flags &= ~AVSEEK_FLAG_BACKWARD;
2087 if (s->iformat->read_seek2) {
2089 ff_read_frame_flush(s);
2091 if (stream_index == -1 && s->nb_streams == 1) {
2092 AVRational time_base = s->streams[0]->time_base;
2093 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2094 min_ts = av_rescale_rnd(min_ts, time_base.den,
2095 time_base.num * (int64_t)AV_TIME_BASE,
2096 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2097 max_ts = av_rescale_rnd(max_ts, time_base.den,
2098 time_base.num * (int64_t)AV_TIME_BASE,
2099 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2102 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2105 ret = avformat_queue_attached_pictures(s);
2109 if(s->iformat->read_timestamp){
2110 //try to seek via read_timestamp()
2113 // Fall back on old API if new is not implemented but old is.
2114 // Note the old API has somewhat different semantics.
2115 if (s->iformat->read_seek || 1) {
2116 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2117 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2118 if (ret<0 && ts != min_ts && max_ts != ts) {
2119 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2121 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2126 // try some generic seek like seek_frame_generic() but with new ts semantics
2127 return -1; //unreachable
2130 /*******************************************************/
2133 * Return TRUE if the stream has accurate duration in any stream.
2135 * @return TRUE if the stream has accurate duration for at least one component.
2137 static int has_duration(AVFormatContext *ic)
2142 for(i = 0;i < ic->nb_streams; i++) {
2143 st = ic->streams[i];
2144 if (st->duration != AV_NOPTS_VALUE)
2147 if (ic->duration != AV_NOPTS_VALUE)
2153 * Estimate the stream timings from the one of each components.
2155 * Also computes the global bitrate if possible.
2157 static void update_stream_timings(AVFormatContext *ic)
2159 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2160 int64_t duration, duration1, filesize;
2165 start_time = INT64_MAX;
2166 start_time_text = INT64_MAX;
2167 end_time = INT64_MIN;
2168 duration = INT64_MIN;
2169 for(i = 0;i < ic->nb_streams; i++) {
2170 st = ic->streams[i];
2171 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2172 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2173 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2174 if (start_time1 < start_time_text)
2175 start_time_text = start_time1;
2177 start_time = FFMIN(start_time, start_time1);
2178 end_time1 = AV_NOPTS_VALUE;
2179 if (st->duration != AV_NOPTS_VALUE) {
2180 end_time1 = start_time1
2181 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2182 end_time = FFMAX(end_time, end_time1);
2184 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2185 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2186 p->start_time = start_time1;
2187 if(p->end_time < end_time1)
2188 p->end_time = end_time1;
2191 if (st->duration != AV_NOPTS_VALUE) {
2192 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2193 duration = FFMAX(duration, duration1);
2196 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2197 start_time = start_time_text;
2198 else if(start_time > start_time_text)
2199 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2201 if (start_time != INT64_MAX) {
2202 ic->start_time = start_time;
2203 if (end_time != INT64_MIN) {
2204 if (ic->nb_programs) {
2205 for (i=0; i<ic->nb_programs; i++) {
2206 p = ic->programs[i];
2207 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2208 duration = FFMAX(duration, p->end_time - p->start_time);
2211 duration = FFMAX(duration, end_time - start_time);
2214 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2215 ic->duration = duration;
2217 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2218 /* compute the bitrate */
2219 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2220 (double)ic->duration;
2221 if (bitrate >= 0 && bitrate <= INT_MAX)
2222 ic->bit_rate = bitrate;
2226 static void fill_all_stream_timings(AVFormatContext *ic)
2231 update_stream_timings(ic);
2232 for(i = 0;i < ic->nb_streams; i++) {
2233 st = ic->streams[i];
2234 if (st->start_time == AV_NOPTS_VALUE) {
2235 if(ic->start_time != AV_NOPTS_VALUE)
2236 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2237 if(ic->duration != AV_NOPTS_VALUE)
2238 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2243 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2245 int64_t filesize, duration;
2246 int i, show_warning = 0;
2249 /* if bit_rate is already set, we believe it */
2250 if (ic->bit_rate <= 0) {
2252 for(i=0;i<ic->nb_streams;i++) {
2253 st = ic->streams[i];
2254 if (st->codec->bit_rate > 0) {
2255 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2259 bit_rate += st->codec->bit_rate;
2262 ic->bit_rate = bit_rate;
2265 /* if duration is already set, we believe it */
2266 if (ic->duration == AV_NOPTS_VALUE &&
2267 ic->bit_rate != 0) {
2268 filesize = ic->pb ? avio_size(ic->pb) : 0;
2270 for(i = 0; i < ic->nb_streams; i++) {
2271 st = ic->streams[i];
2272 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2273 && st->duration == AV_NOPTS_VALUE) {
2274 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2275 st->duration = duration;
2282 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2285 #define DURATION_MAX_READ_SIZE 250000LL
2286 #define DURATION_MAX_RETRY 4
2288 /* only usable for MPEG-PS streams */
2289 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2291 AVPacket pkt1, *pkt = &pkt1;
2293 int read_size, i, ret;
2295 int64_t filesize, offset, duration;
2298 /* flush packet queue */
2299 flush_packet_queue(ic);
2301 for (i=0; i<ic->nb_streams; i++) {
2302 st = ic->streams[i];
2303 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2304 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2307 av_parser_close(st->parser);
2312 /* estimate the end time (duration) */
2313 /* XXX: may need to support wrapping */
2314 filesize = ic->pb ? avio_size(ic->pb) : 0;
2315 end_time = AV_NOPTS_VALUE;
2317 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2321 avio_seek(ic->pb, offset, SEEK_SET);
2324 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2328 ret = ff_read_packet(ic, pkt);
2329 } while(ret == AVERROR(EAGAIN));
2332 read_size += pkt->size;
2333 st = ic->streams[pkt->stream_index];
2334 if (pkt->pts != AV_NOPTS_VALUE &&
2335 (st->start_time != AV_NOPTS_VALUE ||
2336 st->first_dts != AV_NOPTS_VALUE)) {
2337 duration = end_time = pkt->pts;
2338 if (st->start_time != AV_NOPTS_VALUE)
2339 duration -= st->start_time;
2341 duration -= st->first_dts;
2343 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2344 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2345 st->duration = duration;
2346 st->info->last_duration = duration;
2349 av_free_packet(pkt);
2351 }while( end_time==AV_NOPTS_VALUE
2352 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2353 && ++retry <= DURATION_MAX_RETRY);
2355 fill_all_stream_timings(ic);
2357 avio_seek(ic->pb, old_offset, SEEK_SET);
2358 for (i=0; i<ic->nb_streams; i++) {
2360 st->cur_dts= st->first_dts;
2361 st->last_IP_pts = AV_NOPTS_VALUE;
2362 st->reference_dts = AV_NOPTS_VALUE;
2366 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2370 /* get the file size, if possible */
2371 if (ic->iformat->flags & AVFMT_NOFILE) {
2374 file_size = avio_size(ic->pb);
2375 file_size = FFMAX(0, file_size);
2378 if ((!strcmp(ic->iformat->name, "mpeg") ||
2379 !strcmp(ic->iformat->name, "mpegts")) &&
2380 file_size && ic->pb->seekable) {
2381 /* get accurate estimate from the PTSes */
2382 estimate_timings_from_pts(ic, old_offset);
2383 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2384 } else if (has_duration(ic)) {
2385 /* at least one component has timings - we use them for all
2387 fill_all_stream_timings(ic);
2388 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2390 /* less precise: use bitrate info */
2391 estimate_timings_from_bit_rate(ic);
2392 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2394 update_stream_timings(ic);
2398 AVStream av_unused *st;
2399 for(i = 0;i < ic->nb_streams; i++) {
2400 st = ic->streams[i];
2401 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2402 (double) st->start_time / AV_TIME_BASE,
2403 (double) st->duration / AV_TIME_BASE);
2405 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2406 (double) ic->start_time / AV_TIME_BASE,
2407 (double) ic->duration / AV_TIME_BASE,
2408 ic->bit_rate / 1000);
2412 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2414 AVCodecContext *avctx = st->codec;
2416 #define FAIL(errmsg) do { \
2418 *errmsg_ptr = errmsg; \
2422 switch (avctx->codec_type) {
2423 case AVMEDIA_TYPE_AUDIO:
2424 if (!avctx->frame_size && determinable_frame_size(avctx))
2425 FAIL("unspecified frame size");
2426 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2427 FAIL("unspecified sample format");
2428 if (!avctx->sample_rate)
2429 FAIL("unspecified sample rate");
2430 if (!avctx->channels)
2431 FAIL("unspecified number of channels");
2432 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2433 FAIL("no decodable DTS frames");
2435 case AVMEDIA_TYPE_VIDEO:
2437 FAIL("unspecified size");
2438 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2439 FAIL("unspecified pixel format");
2440 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2441 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2442 FAIL("no frame in rv30/40 and no sar");
2444 case AVMEDIA_TYPE_SUBTITLE:
2445 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2446 FAIL("unspecified size");
2448 case AVMEDIA_TYPE_DATA:
2449 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2452 if (avctx->codec_id == AV_CODEC_ID_NONE)
2453 FAIL("unknown codec");
2457 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2458 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options)
2460 const AVCodec *codec;
2461 int got_picture = 1, ret = 0;
2462 AVFrame *frame = avcodec_alloc_frame();
2463 AVSubtitle subtitle;
2464 AVPacket pkt = *avpkt;
2467 return AVERROR(ENOMEM);
2469 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2470 AVDictionary *thread_opt = NULL;
2472 codec = find_decoder(s, st, st->codec->codec_id);
2475 st->info->found_decoder = -1;
2480 /* force thread count to 1 since the h264 decoder will not extract SPS
2481 * and PPS to extradata during multi-threaded decoding */
2482 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2483 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2485 av_dict_free(&thread_opt);
2487 st->info->found_decoder = -1;
2490 st->info->found_decoder = 1;
2491 } else if (!st->info->found_decoder)
2492 st->info->found_decoder = 1;
2494 if (st->info->found_decoder < 0) {
2499 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2501 (!has_codec_parameters(st, NULL) ||
2502 !has_decode_delay_been_guessed(st) ||
2503 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2505 avcodec_get_frame_defaults(frame);
2506 switch(st->codec->codec_type) {
2507 case AVMEDIA_TYPE_VIDEO:
2508 ret = avcodec_decode_video2(st->codec, frame,
2509 &got_picture, &pkt);
2511 case AVMEDIA_TYPE_AUDIO:
2512 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2514 case AVMEDIA_TYPE_SUBTITLE:
2515 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2516 &got_picture, &pkt);
2524 st->nb_decoded_frames++;
2531 if(!pkt.data && !got_picture)
2535 avcodec_free_frame(&frame);
2539 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2541 while (tags->id != AV_CODEC_ID_NONE) {
2549 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2552 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2553 if(tag == tags[i].tag)
2556 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2557 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2560 return AV_CODEC_ID_NONE;
2563 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2567 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2568 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2569 default: return AV_CODEC_ID_NONE;
2574 if (sflags & (1 << (bps - 1))) {
2576 case 1: return AV_CODEC_ID_PCM_S8;
2577 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2578 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2579 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2580 default: return AV_CODEC_ID_NONE;
2584 case 1: return AV_CODEC_ID_PCM_U8;
2585 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2586 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2587 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2588 default: return AV_CODEC_ID_NONE;
2594 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2597 if (!av_codec_get_tag2(tags, id, &tag))
2602 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2606 for(i=0; tags && tags[i]; i++){
2607 const AVCodecTag *codec_tags = tags[i];
2608 while (codec_tags->id != AV_CODEC_ID_NONE) {
2609 if (codec_tags->id == id) {
2610 *tag = codec_tags->tag;
2619 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2622 for(i=0; tags && tags[i]; i++){
2623 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2624 if(id!=AV_CODEC_ID_NONE) return id;
2626 return AV_CODEC_ID_NONE;
2629 static void compute_chapters_end(AVFormatContext *s)
2632 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2634 for (i = 0; i < s->nb_chapters; i++)
2635 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2636 AVChapter *ch = s->chapters[i];
2637 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2640 for (j = 0; j < s->nb_chapters; j++) {
2641 AVChapter *ch1 = s->chapters[j];
2642 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2643 if (j != i && next_start > ch->start && next_start < end)
2646 ch->end = (end == INT64_MAX) ? ch->start : end;
2650 static int get_std_framerate(int i){
2651 if(i<60*12) return (i+1)*1001;
2652 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2656 * Is the time base unreliable.
2657 * This is a heuristic to balance between quick acceptance of the values in
2658 * the headers vs. some extra checks.
2659 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2660 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2661 * And there are "variable" fps files this needs to detect as well.
2663 static int tb_unreliable(AVCodecContext *c){
2664 if( c->time_base.den >= 101L*c->time_base.num
2665 || c->time_base.den < 5L*c->time_base.num
2666 /* || c->codec_tag == AV_RL32("DIVX")
2667 || c->codec_tag == AV_RL32("XVID")*/
2668 || c->codec_tag == AV_RL32("mp4v")
2669 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2670 || c->codec_id == AV_CODEC_ID_H264
2676 #if FF_API_FORMAT_PARAMETERS
2677 int av_find_stream_info(AVFormatContext *ic)
2679 return avformat_find_stream_info(ic, NULL);
2683 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2687 if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
2688 avctx->extradata_size = 0;
2689 return AVERROR(EINVAL);
2691 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2692 if (avctx->extradata) {
2693 memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2694 avctx->extradata_size = size;
2697 avctx->extradata_size = 0;
2698 ret = AVERROR(ENOMEM);
2703 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2705 int i, count, ret = 0, j;
2708 AVPacket pkt1, *pkt;
2709 int64_t old_offset = avio_tell(ic->pb);
2710 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2711 int flush_codecs = ic->probesize > 0;
2714 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2716 for(i=0;i<ic->nb_streams;i++) {
2717 const AVCodec *codec;
2718 AVDictionary *thread_opt = NULL;
2719 st = ic->streams[i];
2721 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2722 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2723 /* if(!st->time_base.num)
2725 if(!st->codec->time_base.num)
2726 st->codec->time_base= st->time_base;
2728 //only for the split stuff
2729 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2730 st->parser = av_parser_init(st->codec->codec_id);
2732 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2733 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2734 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2735 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2737 } else if (st->need_parsing) {
2738 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2739 "%s, packets or times may be invalid.\n",
2740 avcodec_get_name(st->codec->codec_id));
2743 codec = find_decoder(ic, st, st->codec->codec_id);
2745 /* force thread count to 1 since the h264 decoder will not extract SPS
2746 * and PPS to extradata during multi-threaded decoding */
2747 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2749 /* Ensure that subtitle_header is properly set. */
2750 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2751 && codec && !st->codec->codec)
2752 avcodec_open2(st->codec, codec, options ? &options[i]
2755 //try to just open decoders, in case this is enough to get parameters
2756 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2757 if (codec && !st->codec->codec)
2758 avcodec_open2(st->codec, codec, options ? &options[i]
2762 av_dict_free(&thread_opt);
2765 for (i=0; i<ic->nb_streams; i++) {
2766 #if FF_API_R_FRAME_RATE
2767 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2769 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2770 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2776 if (ff_check_interrupt(&ic->interrupt_callback)){
2778 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2782 /* check if one codec still needs to be handled */
2783 for(i=0;i<ic->nb_streams;i++) {
2784 int fps_analyze_framecount = 20;
2786 st = ic->streams[i];
2787 if (!has_codec_parameters(st, NULL))
2789 /* if the timebase is coarse (like the usual millisecond precision
2790 of mkv), we need to analyze more frames to reliably arrive at
2792 if (av_q2d(st->time_base) > 0.0005)
2793 fps_analyze_framecount *= 2;
2794 if (ic->fps_probe_size >= 0)
2795 fps_analyze_framecount = ic->fps_probe_size;
2796 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2797 fps_analyze_framecount = 0;
2798 /* variable fps and no guess at the real fps */
2799 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2800 && st->info->duration_count < fps_analyze_framecount
2801 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2803 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2805 if (st->first_dts == AV_NOPTS_VALUE &&
2806 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2807 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2810 if (i == ic->nb_streams) {
2811 /* NOTE: if the format has no header, then we need to read
2812 some packets to get most of the streams, so we cannot
2814 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2815 /* if we found the info for all the codecs, we can stop */
2817 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2822 /* we did not get all the codec info, but we read too much data */
2823 if (read_size >= ic->probesize) {
2825 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2826 for (i = 0; i < ic->nb_streams; i++)
2827 if (!ic->streams[i]->r_frame_rate.num &&
2828 ic->streams[i]->info->duration_count <= 1 &&
2829 strcmp(ic->iformat->name, "image2"))
2830 av_log(ic, AV_LOG_WARNING,
2831 "Stream #%d: not enough frames to estimate rate; "
2832 "consider increasing probesize\n", i);
2836 /* NOTE: a new stream can be added there if no header in file
2837 (AVFMTCTX_NOHEADER) */
2838 ret = read_frame_internal(ic, &pkt1);
2839 if (ret == AVERROR(EAGAIN))
2847 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2848 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2850 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2851 &ic->packet_buffer_end);
2853 ret = AVERROR(ENOMEM);
2854 goto find_stream_info_err;
2856 if ((ret = av_dup_packet(pkt)) < 0)
2857 goto find_stream_info_err;
2860 read_size += pkt->size;
2862 st = ic->streams[pkt->stream_index];
2863 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2864 /* check for non-increasing dts */
2865 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2866 st->info->fps_last_dts >= pkt->dts) {
2867 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2868 "packet %d with DTS %"PRId64", packet %d with DTS "
2869 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2870 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2871 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2873 /* check for a discontinuity in dts - if the difference in dts
2874 * is more than 1000 times the average packet duration in the sequence,
2875 * we treat it as a discontinuity */
2876 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2877 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2878 (pkt->dts - st->info->fps_last_dts) / 1000 >
2879 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2880 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2881 "packet %d with DTS %"PRId64", packet %d with DTS "
2882 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2883 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2884 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2887 /* update stored dts values */
2888 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
2889 st->info->fps_first_dts = pkt->dts;
2890 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
2892 st->info->fps_last_dts = pkt->dts;
2893 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
2895 if (st->codec_info_nb_frames>1) {
2897 if (st->time_base.den > 0)
2898 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2899 if (st->avg_frame_rate.num > 0)
2900 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
2903 && st->codec_info_nb_frames>30
2904 && st->info->fps_first_dts != AV_NOPTS_VALUE
2905 && st->info->fps_last_dts != AV_NOPTS_VALUE)
2906 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
2908 if (t >= ic->max_analyze_duration) {
2909 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
2912 if (pkt->duration) {
2913 st->info->codec_info_duration += pkt->duration;
2914 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
2917 #if FF_API_R_FRAME_RATE
2919 int64_t last = st->info->last_dts;
2921 if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
2922 && pkt->dts - (uint64_t)last < INT64_MAX){
2923 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2924 int64_t duration= pkt->dts - last;
2926 if (!st->info->duration_error)
2927 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2928 if (!st->info->duration_error)
2929 return AVERROR(ENOMEM);
2931 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2932 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2933 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2934 int framerate= get_std_framerate(i);
2935 double sdts= dts*framerate/(1001*12);
2937 int64_t ticks= llrint(sdts+j*0.5);
2938 double error= sdts - ticks + j*0.5;
2939 st->info->duration_error[j][0][i] += error;
2940 st->info->duration_error[j][1][i] += error*error;
2943 st->info->duration_count++;
2944 // ignore the first 4 values, they might have some random jitter
2945 if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
2946 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2948 if (pkt->dts != AV_NOPTS_VALUE)
2949 st->info->last_dts = pkt->dts;
2952 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2953 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2954 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2955 if (ff_alloc_extradata(st->codec, i))
2956 return AVERROR(ENOMEM);
2957 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2961 /* if still no information, we try to open the codec and to
2962 decompress the frame. We try to avoid that in most cases as
2963 it takes longer and uses more memory. For MPEG-4, we need to
2964 decompress for QuickTime.
2966 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2967 least one frame of codec data, this makes sure the codec initializes
2968 the channel configuration and does not only trust the values from the container.
2970 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2972 st->codec_info_nb_frames++;
2977 AVPacket empty_pkt = { 0 };
2979 av_init_packet(&empty_pkt);
2981 for(i=0;i<ic->nb_streams;i++) {
2983 st = ic->streams[i];
2985 /* flush the decoders */
2986 if (st->info->found_decoder == 1) {
2988 err = try_decode_frame(ic, st, &empty_pkt,
2989 (options && i < orig_nb_streams) ?
2990 &options[i] : NULL);
2991 } while (err > 0 && !has_codec_parameters(st, NULL));
2994 av_log(ic, AV_LOG_INFO,
2995 "decoding for stream %d failed\n", st->index);
3001 // close codecs which were opened in try_decode_frame()
3002 for(i=0;i<ic->nb_streams;i++) {
3003 st = ic->streams[i];
3004 avcodec_close(st->codec);
3006 for(i=0;i<ic->nb_streams;i++) {
3007 st = ic->streams[i];
3008 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3009 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3010 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3011 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3012 st->codec->codec_tag= tag;
3015 /* estimate average framerate if not set by demuxer */
3016 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3018 double best_error = 0.01;
3020 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3021 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3022 st->info->codec_info_duration < 0)
3024 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3025 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3026 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3028 /* round guessed framerate to a "standard" framerate if it's
3029 * within 1% of the original estimate*/
3030 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3031 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3032 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3034 if (error < best_error) {
3036 best_fps = std_fps.num;
3040 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3041 best_fps, 12*1001, INT_MAX);
3044 // the check for tb_unreliable() is not completely correct, since this is not about handling
3045 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3046 // ipmovie.c produces.
3047 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)
3048 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);
3049 if (st->info->duration_count>1 && !st->r_frame_rate.num
3050 && tb_unreliable(st->codec)) {
3052 double best_error= 0.01;
3054 for (j=0; j<MAX_STD_TIMEBASES; j++) {
3057 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3059 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
3062 int n= st->info->duration_count;
3063 double a= st->info->duration_error[k][0][j] / n;
3064 double error= st->info->duration_error[k][1][j]/n - a*a;
3066 if(error < best_error && best_error> 0.000000001){
3068 num = get_std_framerate(j);
3071 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3074 // do not increase frame rate by more than 1 % in order to match a standard rate.
3075 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
3076 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3079 if (!st->r_frame_rate.num){
3080 if( st->codec->time_base.den * (int64_t)st->time_base.num
3081 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3082 st->r_frame_rate.num = st->codec->time_base.den;
3083 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3085 st->r_frame_rate.num = st->time_base.den;
3086 st->r_frame_rate.den = st->time_base.num;
3089 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3090 if(!st->codec->bits_per_coded_sample)
3091 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3092 // set stream disposition based on audio service type
3093 switch (st->codec->audio_service_type) {
3094 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3095 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3096 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3097 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3098 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3099 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3100 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3101 st->disposition = AV_DISPOSITION_COMMENT; break;
3102 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3103 st->disposition = AV_DISPOSITION_KARAOKE; break;
3109 estimate_timings(ic, old_offset);
3111 if (ret >= 0 && ic->nb_streams)
3112 ret = -1; /* we could not have all the codec parameters before EOF */
3113 for(i=0;i<ic->nb_streams;i++) {
3115 st = ic->streams[i];
3116 if (!has_codec_parameters(st, &errmsg)) {
3118 avcodec_string(buf, sizeof(buf), st->codec, 0);
3119 av_log(ic, AV_LOG_WARNING,
3120 "Could not find codec parameters for stream %d (%s): %s\n"
3121 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3128 compute_chapters_end(ic);
3130 find_stream_info_err:
3131 for (i=0; i < ic->nb_streams; i++) {
3132 st = ic->streams[i];
3133 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3134 ic->streams[i]->codec->thread_count = 0;
3136 av_freep(&st->info->duration_error);
3137 av_freep(&ic->streams[i]->info);
3140 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
3144 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3148 for (i = 0; i < ic->nb_programs; i++) {
3149 if (ic->programs[i] == last) {
3153 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3154 if (ic->programs[i]->stream_index[j] == s)
3155 return ic->programs[i];
3161 int av_find_best_stream(AVFormatContext *ic,
3162 enum AVMediaType type,
3163 int wanted_stream_nb,
3165 AVCodec **decoder_ret,
3168 int i, nb_streams = ic->nb_streams;
3169 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3170 unsigned *program = NULL;
3171 AVCodec *decoder = NULL, *best_decoder = NULL;
3173 if (related_stream >= 0 && wanted_stream_nb < 0) {
3174 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3176 program = p->stream_index;
3177 nb_streams = p->nb_stream_indexes;
3180 for (i = 0; i < nb_streams; i++) {
3181 int real_stream_index = program ? program[i] : i;
3182 AVStream *st = ic->streams[real_stream_index];
3183 AVCodecContext *avctx = st->codec;
3184 if (avctx->codec_type != type)
3186 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3188 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3191 decoder = find_decoder(ic, st, st->codec->codec_id);
3194 ret = AVERROR_DECODER_NOT_FOUND;
3198 count = st->codec_info_nb_frames;
3199 bitrate = avctx->bit_rate;
3200 multiframe = FFMIN(5, count);
3201 if ((best_multiframe > multiframe) ||
3202 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3203 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3206 best_bitrate = bitrate;
3207 best_multiframe = multiframe;
3208 ret = real_stream_index;
3209 best_decoder = decoder;
3210 if (program && i == nb_streams - 1 && ret < 0) {
3212 nb_streams = ic->nb_streams;
3213 i = 0; /* no related stream found, try again with everything */
3217 *decoder_ret = best_decoder;
3221 /*******************************************************/
3223 int av_read_play(AVFormatContext *s)
3225 if (s->iformat->read_play)
3226 return s->iformat->read_play(s);
3228 return avio_pause(s->pb, 0);
3229 return AVERROR(ENOSYS);
3232 int av_read_pause(AVFormatContext *s)
3234 if (s->iformat->read_pause)
3235 return s->iformat->read_pause(s);
3237 return avio_pause(s->pb, 1);
3238 return AVERROR(ENOSYS);
3241 void ff_free_stream(AVFormatContext *s, AVStream *st){
3242 av_assert0(s->nb_streams>0);
3243 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3246 av_parser_close(st->parser);
3248 if (st->attached_pic.data)
3249 av_free_packet(&st->attached_pic);
3250 av_dict_free(&st->metadata);
3251 av_freep(&st->probe_data.buf);
3252 av_freep(&st->index_entries);
3253 av_freep(&st->codec->extradata);
3254 av_freep(&st->codec->subtitle_header);
3255 av_freep(&st->codec);
3256 av_freep(&st->priv_data);
3258 av_freep(&st->info->duration_error);
3259 av_freep(&st->info);
3260 av_freep(&s->streams[ --s->nb_streams ]);
3263 void avformat_free_context(AVFormatContext *s)
3271 if (s->iformat && s->iformat->priv_class && s->priv_data)
3272 av_opt_free(s->priv_data);
3274 for(i=s->nb_streams-1; i>=0; i--) {
3275 ff_free_stream(s, s->streams[i]);
3277 for(i=s->nb_programs-1; i>=0; i--) {
3278 av_dict_free(&s->programs[i]->metadata);
3279 av_freep(&s->programs[i]->stream_index);
3280 av_freep(&s->programs[i]);
3282 av_freep(&s->programs);
3283 av_freep(&s->priv_data);
3284 while(s->nb_chapters--) {
3285 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3286 av_freep(&s->chapters[s->nb_chapters]);
3288 av_freep(&s->chapters);
3289 av_dict_free(&s->metadata);
3290 av_freep(&s->streams);
3294 #if FF_API_CLOSE_INPUT_FILE
3295 void av_close_input_file(AVFormatContext *s)
3297 avformat_close_input(&s);
3301 void avformat_close_input(AVFormatContext **ps)
3312 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3313 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3316 flush_packet_queue(s);
3319 if (s->iformat->read_close)
3320 s->iformat->read_close(s);
3323 avformat_free_context(s);
3330 #if FF_API_NEW_STREAM
3331 AVStream *av_new_stream(AVFormatContext *s, int id)
3333 AVStream *st = avformat_new_stream(s, NULL);
3340 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3346 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3348 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3351 s->streams = streams;
3353 st = av_mallocz(sizeof(AVStream));
3356 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3360 st->info->last_dts = AV_NOPTS_VALUE;
3362 st->codec = avcodec_alloc_context3(c);
3364 /* no default bitrate if decoding */
3365 st->codec->bit_rate = 0;
3367 st->index = s->nb_streams;
3368 st->start_time = AV_NOPTS_VALUE;
3369 st->duration = AV_NOPTS_VALUE;
3370 /* we set the current DTS to 0 so that formats without any timestamps
3371 but durations get some timestamps, formats with some unknown
3372 timestamps have their first few packets buffered and the
3373 timestamps corrected before they are returned to the user */
3374 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3375 st->first_dts = AV_NOPTS_VALUE;
3376 st->probe_packets = MAX_PROBE_PACKETS;
3377 st->pts_wrap_reference = AV_NOPTS_VALUE;
3378 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3380 /* default pts setting is MPEG-like */
3381 avpriv_set_pts_info(st, 33, 1, 90000);
3382 st->last_IP_pts = AV_NOPTS_VALUE;
3383 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3384 st->pts_buffer[i]= AV_NOPTS_VALUE;
3385 st->reference_dts = AV_NOPTS_VALUE;
3387 st->sample_aspect_ratio = (AVRational){0,1};
3389 #if FF_API_R_FRAME_RATE
3390 st->info->last_dts = AV_NOPTS_VALUE;
3392 st->info->fps_first_dts = AV_NOPTS_VALUE;
3393 st->info->fps_last_dts = AV_NOPTS_VALUE;
3395 s->streams[s->nb_streams++] = st;
3399 AVProgram *av_new_program(AVFormatContext *ac, int id)
3401 AVProgram *program=NULL;
3404 av_dlog(ac, "new_program: id=0x%04x\n", id);
3406 for(i=0; i<ac->nb_programs; i++)
3407 if(ac->programs[i]->id == id)
3408 program = ac->programs[i];
3411 program = av_mallocz(sizeof(AVProgram));
3414 dynarray_add(&ac->programs, &ac->nb_programs, program);
3415 program->discard = AVDISCARD_NONE;
3418 program->pts_wrap_reference = AV_NOPTS_VALUE;
3419 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3421 program->start_time =
3422 program->end_time = AV_NOPTS_VALUE;
3427 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3429 AVChapter *chapter = NULL;
3432 for(i=0; i<s->nb_chapters; i++)
3433 if(s->chapters[i]->id == id)
3434 chapter = s->chapters[i];
3437 chapter= av_mallocz(sizeof(AVChapter));
3440 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3442 av_dict_set(&chapter->metadata, "title", title, 0);
3444 chapter->time_base= time_base;
3445 chapter->start = start;
3451 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3454 AVProgram *program=NULL;
3457 if (idx >= ac->nb_streams) {
3458 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3462 for(i=0; i<ac->nb_programs; i++){
3463 if(ac->programs[i]->id != progid)
3465 program = ac->programs[i];
3466 for(j=0; j<program->nb_stream_indexes; j++)
3467 if(program->stream_index[j] == idx)
3470 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3473 program->stream_index = tmp;
3474 program->stream_index[program->nb_stream_indexes++] = idx;
3479 static void print_fps(double d, const char *postfix){
3480 uint64_t v= lrintf(d*100);
3481 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3482 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3483 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3486 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3488 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3489 AVDictionaryEntry *tag=NULL;
3491 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3492 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3493 if(strcmp("language", tag->key)){
3494 const char *p = tag->value;
3495 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3498 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3499 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3500 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3502 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3503 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3506 av_log(ctx, AV_LOG_INFO, "\n");
3512 /* "user interface" functions */
3513 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3516 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3517 AVStream *st = ic->streams[i];
3518 int g = av_gcd(st->time_base.num, st->time_base.den);
3519 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3520 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3521 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3522 /* the pid is an important information, so we display it */
3523 /* XXX: add a generic system */
3524 if (flags & AVFMT_SHOW_IDS)
3525 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3527 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3528 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3529 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3530 if (st->sample_aspect_ratio.num && // default
3531 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3532 AVRational display_aspect_ratio;
3533 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3534 st->codec->width*st->sample_aspect_ratio.num,
3535 st->codec->height*st->sample_aspect_ratio.den,
3537 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3538 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3539 display_aspect_ratio.num, display_aspect_ratio.den);
3541 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3542 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3543 print_fps(av_q2d(st->avg_frame_rate), "fps");
3544 #if FF_API_R_FRAME_RATE
3545 if(st->r_frame_rate.den && st->r_frame_rate.num)
3546 print_fps(av_q2d(st->r_frame_rate), "tbr");
3548 if(st->time_base.den && st->time_base.num)
3549 print_fps(1/av_q2d(st->time_base), "tbn");
3550 if(st->codec->time_base.den && st->codec->time_base.num)
3551 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3553 if (st->disposition & AV_DISPOSITION_DEFAULT)
3554 av_log(NULL, AV_LOG_INFO, " (default)");
3555 if (st->disposition & AV_DISPOSITION_DUB)
3556 av_log(NULL, AV_LOG_INFO, " (dub)");
3557 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3558 av_log(NULL, AV_LOG_INFO, " (original)");
3559 if (st->disposition & AV_DISPOSITION_COMMENT)
3560 av_log(NULL, AV_LOG_INFO, " (comment)");
3561 if (st->disposition & AV_DISPOSITION_LYRICS)
3562 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3563 if (st->disposition & AV_DISPOSITION_KARAOKE)
3564 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3565 if (st->disposition & AV_DISPOSITION_FORCED)
3566 av_log(NULL, AV_LOG_INFO, " (forced)");
3567 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3568 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3569 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3570 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3571 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3572 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3573 av_log(NULL, AV_LOG_INFO, "\n");
3574 dump_metadata(NULL, st->metadata, " ");
3577 void av_dump_format(AVFormatContext *ic,
3583 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3584 if (ic->nb_streams && !printed)
3587 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3588 is_output ? "Output" : "Input",
3590 is_output ? ic->oformat->name : ic->iformat->name,
3591 is_output ? "to" : "from", url);
3592 dump_metadata(NULL, ic->metadata, " ");
3594 av_log(NULL, AV_LOG_INFO, " Duration: ");
3595 if (ic->duration != AV_NOPTS_VALUE) {
3596 int hours, mins, secs, us;
3597 int64_t duration = ic->duration + 5000;
3598 secs = duration / AV_TIME_BASE;
3599 us = duration % AV_TIME_BASE;
3604 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3605 (100 * us) / AV_TIME_BASE);
3607 av_log(NULL, AV_LOG_INFO, "N/A");
3609 if (ic->start_time != AV_NOPTS_VALUE) {
3611 av_log(NULL, AV_LOG_INFO, ", start: ");
3612 secs = ic->start_time / AV_TIME_BASE;
3613 us = abs(ic->start_time % AV_TIME_BASE);
3614 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3615 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3617 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3619 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3621 av_log(NULL, AV_LOG_INFO, "N/A");
3623 av_log(NULL, AV_LOG_INFO, "\n");
3625 for (i = 0; i < ic->nb_chapters; i++) {
3626 AVChapter *ch = ic->chapters[i];
3627 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3628 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3629 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3631 dump_metadata(NULL, ch->metadata, " ");
3633 if(ic->nb_programs) {
3634 int j, k, total = 0;
3635 for(j=0; j<ic->nb_programs; j++) {
3636 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3638 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3639 name ? name->value : "");
3640 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3641 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3642 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3643 printed[ic->programs[j]->stream_index[k]] = 1;
3645 total += ic->programs[j]->nb_stream_indexes;
3647 if (total < ic->nb_streams)
3648 av_log(NULL, AV_LOG_INFO, " No Program\n");
3650 for(i=0;i<ic->nb_streams;i++)
3652 dump_stream_format(ic, i, index, is_output);
3657 uint64_t ff_ntp_time(void)
3659 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3662 int av_get_frame_filename(char *buf, int buf_size,
3663 const char *path, int number)
3666 char *q, buf1[20], c;
3667 int nd, len, percentd_found;
3679 while (av_isdigit(*p)) {
3680 nd = nd * 10 + *p++ - '0';
3683 } while (av_isdigit(c));
3692 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3694 if ((q - buf + len) > buf_size - 1)
3696 memcpy(q, buf1, len);
3704 if ((q - buf) < buf_size - 1)
3708 if (!percentd_found)
3717 static void hex_dump_internal(void *avcl, FILE *f, int level,
3718 const uint8_t *buf, int size)
3721 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3723 for(i=0;i<size;i+=16) {
3730 PRINT(" %02x", buf[i+j]);
3735 for(j=0;j<len;j++) {
3737 if (c < ' ' || c > '~')
3746 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3748 hex_dump_internal(NULL, f, 0, buf, size);
3751 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3753 hex_dump_internal(avcl, NULL, level, buf, size);
3756 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3758 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3759 PRINT("stream #%d:\n", pkt->stream_index);
3760 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3761 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3762 /* DTS is _always_ valid after av_read_frame() */
3764 if (pkt->dts == AV_NOPTS_VALUE)
3767 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3768 /* PTS may not be known if B-frames are present. */
3770 if (pkt->pts == AV_NOPTS_VALUE)
3773 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3775 PRINT(" size=%d\n", pkt->size);
3778 av_hex_dump(f, pkt->data, pkt->size);
3781 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3783 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3786 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3789 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3792 void av_url_split(char *proto, int proto_size,
3793 char *authorization, int authorization_size,
3794 char *hostname, int hostname_size,
3796 char *path, int path_size,
3799 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3801 if (port_ptr) *port_ptr = -1;
3802 if (proto_size > 0) proto[0] = 0;
3803 if (authorization_size > 0) authorization[0] = 0;
3804 if (hostname_size > 0) hostname[0] = 0;
3805 if (path_size > 0) path[0] = 0;
3807 /* parse protocol */
3808 if ((p = strchr(url, ':'))) {
3809 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3814 /* no protocol means plain filename */
3815 av_strlcpy(path, url, path_size);
3819 /* separate path from hostname */
3820 ls = strchr(p, '/');
3821 ls2 = strchr(p, '?');
3825 ls = FFMIN(ls, ls2);
3827 av_strlcpy(path, ls, path_size);
3829 ls = &p[strlen(p)]; // XXX
3831 /* the rest is hostname, use that to parse auth/port */
3833 /* authorization (user[:pass]@hostname) */
3835 while ((at = strchr(p, '@')) && at < ls) {
3836 av_strlcpy(authorization, at2,
3837 FFMIN(authorization_size, at + 1 - at2));
3838 p = at + 1; /* skip '@' */
3841 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3843 av_strlcpy(hostname, p + 1,
3844 FFMIN(hostname_size, brk - p));
3845 if (brk[1] == ':' && port_ptr)
3846 *port_ptr = atoi(brk + 2);
3847 } else if ((col = strchr(p, ':')) && col < ls) {
3848 av_strlcpy(hostname, p,
3849 FFMIN(col + 1 - p, hostname_size));
3850 if (port_ptr) *port_ptr = atoi(col + 1);
3852 av_strlcpy(hostname, p,
3853 FFMIN(ls + 1 - p, hostname_size));
3857 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3860 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3863 'C', 'D', 'E', 'F' };
3864 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3867 'c', 'd', 'e', 'f' };
3868 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3870 for(i = 0; i < s; i++) {
3871 buff[i * 2] = hex_table[src[i] >> 4];
3872 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3878 int ff_hex_to_data(uint8_t *data, const char *p)
3885 p += strspn(p, SPACE_CHARS);
3888 c = av_toupper((unsigned char) *p++);
3889 if (c >= '0' && c <= '9')
3891 else if (c >= 'A' && c <= 'F')
3906 #if FF_API_SET_PTS_INFO
3907 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3908 unsigned int pts_num, unsigned int pts_den)
3910 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3914 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3915 unsigned int pts_num, unsigned int pts_den)
3918 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3919 if(new_tb.num != pts_num)
3920 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3922 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3924 if(new_tb.num <= 0 || new_tb.den <= 0) {
3925 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase %d/%d for st:%d\n", new_tb.num, new_tb.den, s->index);
3928 s->time_base = new_tb;
3929 av_codec_set_pkt_timebase(s->codec, new_tb);
3930 s->pts_wrap_bits = pts_wrap_bits;
3933 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3936 const char *ptr = str;
3938 /* Parse key=value pairs. */
3941 char *dest = NULL, *dest_end;
3942 int key_len, dest_len = 0;
3944 /* Skip whitespace and potential commas. */
3945 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
3952 if (!(ptr = strchr(key, '=')))
3955 key_len = ptr - key;
3957 callback_get_buf(context, key, key_len, &dest, &dest_len);
3958 dest_end = dest + dest_len - 1;
3962 while (*ptr && *ptr != '\"') {
3966 if (dest && dest < dest_end)
3970 if (dest && dest < dest_end)
3978 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
3979 if (dest && dest < dest_end)
3987 int ff_find_stream_index(AVFormatContext *s, int id)
3990 for (i = 0; i < s->nb_streams; i++) {
3991 if (s->streams[i]->id == id)
3997 int64_t ff_iso8601_to_unix_time(const char *datestr)
3999 struct tm time1 = {0}, time2 = {0};
4001 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4002 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4004 return av_timegm(&time2);
4006 return av_timegm(&time1);
4009 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4012 if (ofmt->query_codec)
4013 return ofmt->query_codec(codec_id, std_compliance);
4014 else if (ofmt->codec_tag)
4015 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4016 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4017 codec_id == ofmt->subtitle_codec)
4020 return AVERROR_PATCHWELCOME;
4023 int avformat_network_init(void)
4027 ff_network_inited_globally = 1;
4028 if ((ret = ff_network_init()) < 0)
4035 int avformat_network_deinit(void)
4044 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4045 uint64_t channel_layout, int32_t sample_rate,
4046 int32_t width, int32_t height)
4052 return AVERROR(EINVAL);
4055 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4057 if (channel_layout) {
4059 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4063 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4065 if (width || height) {
4067 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4069 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4071 return AVERROR(ENOMEM);
4072 bytestream_put_le32(&data, flags);
4074 bytestream_put_le32(&data, channels);
4076 bytestream_put_le64(&data, channel_layout);
4078 bytestream_put_le32(&data, sample_rate);
4079 if (width || height) {
4080 bytestream_put_le32(&data, width);
4081 bytestream_put_le32(&data, height);
4086 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4088 AVRational undef = {0, 1};
4089 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4090 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4091 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4093 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4094 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4095 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4096 stream_sample_aspect_ratio = undef;
4098 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4099 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4100 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4101 frame_sample_aspect_ratio = undef;
4103 if (stream_sample_aspect_ratio.num)
4104 return stream_sample_aspect_ratio;
4106 return frame_sample_aspect_ratio;
4109 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4111 AVRational fr = st->r_frame_rate;
4113 if (st->codec->ticks_per_frame > 1) {
4114 AVRational codec_fr = av_inv_q(st->codec->time_base);
4115 AVRational avg_fr = st->avg_frame_rate;
4116 codec_fr.den *= st->codec->ticks_per_frame;
4117 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4118 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4125 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4128 if (*spec <= '9' && *spec >= '0') /* opt:index */
4129 return strtol(spec, NULL, 0) == st->index;
4130 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4131 *spec == 't') { /* opt:[vasdt] */
4132 enum AVMediaType type;
4135 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4136 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4137 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4138 case 'd': type = AVMEDIA_TYPE_DATA; break;
4139 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4140 default: av_assert0(0);
4142 if (type != st->codec->codec_type)
4144 if (*spec++ == ':') { /* possibly followed by :index */
4145 int i, index = strtol(spec, NULL, 0);
4146 for (i = 0; i < s->nb_streams; i++)
4147 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4148 return i == st->index;
4152 } else if (*spec == 'p' && *(spec + 1) == ':') {
4156 prog_id = strtol(spec, &endptr, 0);
4157 for (i = 0; i < s->nb_programs; i++) {
4158 if (s->programs[i]->id != prog_id)
4161 if (*endptr++ == ':') {
4162 int stream_idx = strtol(endptr, NULL, 0);
4163 return stream_idx >= 0 &&
4164 stream_idx < s->programs[i]->nb_stream_indexes &&
4165 st->index == s->programs[i]->stream_index[stream_idx];
4168 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4169 if (st->index == s->programs[i]->stream_index[j])
4173 } else if (*spec == '#') {
4176 sid = strtol(spec + 1, &endptr, 0);
4178 return st->id == sid;
4179 } else if (!*spec) /* empty specifier, matches everything */
4182 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4183 return AVERROR(EINVAL);
4186 void ff_generate_avci_extradata(AVStream *st)
4188 static const uint8_t avci100_1080p_extradata[] = {
4190 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4191 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4192 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4193 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4194 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4195 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4196 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4197 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4198 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4200 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4203 static const uint8_t avci100_1080i_extradata[] = {
4205 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4206 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4207 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4208 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4209 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4210 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4211 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4212 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4213 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4214 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4215 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4217 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4220 static const uint8_t avci50_1080i_extradata[] = {
4222 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4223 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4224 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4225 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4226 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4227 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4228 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4229 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4230 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4231 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4232 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4234 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4237 static const uint8_t avci100_720p_extradata[] = {
4239 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4240 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4241 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4242 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4243 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4244 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4245 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4246 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4247 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4248 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4250 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4254 const uint8_t *data = 0;
4255 if (st->codec->width == 1920) {
4256 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4257 data = avci100_1080p_extradata;
4258 size = sizeof(avci100_1080p_extradata);
4260 data = avci100_1080i_extradata;
4261 size = sizeof(avci100_1080i_extradata);
4263 } else if (st->codec->width == 1440) {
4264 data = avci50_1080i_extradata;
4265 size = sizeof(avci50_1080i_extradata);
4266 } else if (st->codec->width == 1280) {
4267 data = avci100_720p_extradata;
4268 size = sizeof(avci100_720p_extradata);
4272 av_freep(&st->codec->extradata);
4273 if (ff_alloc_extradata(st->codec, size))
4275 memcpy(st->codec->extradata, data, size);