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
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/pixdesc.h"
36 #include "libavutil/avassert.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/time.h"
41 #include "libavutil/timestamp.h"
43 #include "audiointerleave.h"
55 * various utility functions for use within FFmpeg
58 unsigned avformat_version(void)
60 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
61 return LIBAVFORMAT_VERSION_INT;
64 const char *avformat_configuration(void)
66 return FFMPEG_CONFIGURATION;
69 const char *avformat_license(void)
71 #define LICENSE_PREFIX "libavformat license: "
72 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
75 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
77 static int is_relative(int64_t ts) {
78 return ts > (RELATIVE_TS_BASE - (1LL<<48));
82 * Wrap a given time stamp, if there is an indication for an overflow
85 * @param timestamp the time stamp to wrap
86 * @return resulting time stamp
88 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
90 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
91 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
92 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
93 timestamp < st->pts_wrap_reference)
94 return timestamp + (1ULL<<st->pts_wrap_bits);
95 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
96 timestamp >= st->pts_wrap_reference)
97 return timestamp - (1ULL<<st->pts_wrap_bits);
102 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
103 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
104 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
105 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
107 static AVCodec *find_decoder(AVFormatContext *s, AVStream *st, enum AVCodecID codec_id)
109 if (st->codec->codec)
110 return st->codec->codec;
112 switch(st->codec->codec_type){
113 case AVMEDIA_TYPE_VIDEO:
114 if(s->video_codec) return s->video_codec;
116 case AVMEDIA_TYPE_AUDIO:
117 if(s->audio_codec) return s->audio_codec;
119 case AVMEDIA_TYPE_SUBTITLE:
120 if(s->subtitle_codec) return s->subtitle_codec;
124 return avcodec_find_decoder(codec_id);
127 int av_format_get_probe_score(const AVFormatContext *s)
129 return s->probe_score;
132 /* an arbitrarily chosen "sane" max packet size -- 50M */
133 #define SANE_CHUNK_SIZE (50000000)
135 int ffio_limit(AVIOContext *s, int size)
138 int64_t remaining= s->maxsize - avio_tell(s);
139 if(remaining < size){
140 int64_t newsize= avio_size(s);
141 if(!s->maxsize || s->maxsize<newsize)
142 s->maxsize= newsize - !newsize;
143 remaining= s->maxsize - avio_tell(s);
144 remaining= FFMAX(remaining, 0);
147 if(s->maxsize>=0 && remaining+1 < size){
148 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
156 * Read the data in sane-sized chunks and append to pkt.
157 * Return the number of bytes read or an error.
159 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
161 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
162 int orig_size = pkt->size;
166 int prev_size = pkt->size;
170 * When the caller requests a lot of data, limit it to the amount left
171 * in file or SANE_CHUNK_SIZE when it is not known
174 if (read_size > SANE_CHUNK_SIZE/10) {
175 read_size = ffio_limit(s, read_size);
176 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
178 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
181 ret = av_grow_packet(pkt, read_size);
185 ret = avio_read(s, pkt->data + prev_size, read_size);
186 if (ret != read_size) {
187 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
194 pkt->flags |= AV_PKT_FLAG_CORRUPT;
199 return pkt->size > orig_size ? pkt->size - orig_size : ret;
202 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
207 pkt->pos = avio_tell(s);
209 return append_packet_chunked(s, pkt, size);
212 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
215 return av_get_packet(s, pkt, size);
216 return append_packet_chunked(s, pkt, size);
220 int av_filename_number_test(const char *filename)
223 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
226 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
228 AVProbeData lpd = *pd;
229 AVInputFormat *fmt1 = NULL, *fmt;
230 int score, nodat = 0, score_max=0;
231 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
234 lpd.buf = zerobuffer;
236 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
237 int id3len = ff_id3v2_tag_len(lpd.buf);
238 if (lpd.buf_size > id3len + 16) {
240 lpd.buf_size -= id3len;
246 while ((fmt1 = av_iformat_next(fmt1))) {
247 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
250 if (fmt1->read_probe) {
251 score = fmt1->read_probe(&lpd);
252 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
253 score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
254 } else if (fmt1->extensions) {
255 if (av_match_ext(lpd.filename, fmt1->extensions)) {
256 score = AVPROBE_SCORE_EXTENSION;
259 if (score > score_max) {
262 }else if (score == score_max)
266 score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
267 *score_ret= score_max;
272 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
275 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
276 if(score_ret > *score_max){
277 *score_max= score_ret;
283 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
285 return av_probe_input_format2(pd, is_opened, &score);
288 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
290 static const struct {
291 const char *name; enum AVCodecID id; enum AVMediaType type;
293 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
294 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
295 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
296 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
297 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
298 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
299 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
300 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
301 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
305 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
307 if (fmt && st->request_probe <= score) {
309 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
310 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
311 for (i = 0; fmt_id_type[i].name; i++) {
312 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
313 st->codec->codec_id = fmt_id_type[i].id;
314 st->codec->codec_type = fmt_id_type[i].type;
322 /************************************************************/
323 /* input media file */
325 int av_demuxer_open(AVFormatContext *ic){
328 if (ic->iformat->read_header) {
329 err = ic->iformat->read_header(ic);
334 if (ic->pb && !ic->data_offset)
335 ic->data_offset = avio_tell(ic->pb);
341 int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
342 const char *filename, void *logctx,
343 unsigned int offset, unsigned int max_probe_size)
345 AVProbeData pd = { filename ? filename : "" };
348 int ret = 0, probe_size, buf_offset = 0;
351 if (!max_probe_size) {
352 max_probe_size = PROBE_BUF_MAX;
353 } else if (max_probe_size > PROBE_BUF_MAX) {
354 max_probe_size = PROBE_BUF_MAX;
355 } else if (max_probe_size < PROBE_BUF_MIN) {
356 av_log(logctx, AV_LOG_ERROR,
357 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
358 return AVERROR(EINVAL);
361 if (offset >= max_probe_size) {
362 return AVERROR(EINVAL);
365 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
366 if (!av_strcasecmp(mime_type, "audio/aacp")) {
367 *fmt = av_find_input_format("aac");
369 av_freep(&mime_type);
372 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
373 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
374 score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
376 /* read probe data */
377 if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0)
379 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
380 /* fail if error was not end of file, otherwise, lower score */
381 if (ret != AVERROR_EOF) {
386 ret = 0; /* error was end of file, nothing read */
389 if (buf_offset < offset)
391 pd.buf_size = buf_offset - offset;
392 pd.buf = &buf[offset];
394 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
396 /* guess file format */
397 *fmt = av_probe_input_format2(&pd, 1, &score);
399 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
400 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
402 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
404 FILE *f = fopen("probestat.tmp", "ab");
405 fprintf(f, "probe_size:%d format:%s score:%d filename:%s\n", probe_size, (*fmt)->name, score, filename);
413 return AVERROR_INVALIDDATA;
416 /* rewind. reuse probe buffer to avoid seeking */
417 ret = ffio_rewind_with_probe_data(pb, &buf, buf_offset);
419 return ret < 0 ? ret : score;
422 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
423 const char *filename, void *logctx,
424 unsigned int offset, unsigned int max_probe_size)
426 int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size);
427 return ret < 0 ? ret : 0;
431 /* open input file and probe the format if necessary */
432 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
435 AVProbeData pd = {filename, NULL, 0};
436 int score = AVPROBE_SCORE_RETRY;
439 s->flags |= AVFMT_FLAG_CUSTOM_IO;
441 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
442 else if (s->iformat->flags & AVFMT_NOFILE)
443 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
444 "will be ignored with AVFMT_NOFILE format.\n");
448 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
449 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
452 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
453 &s->interrupt_callback, options)) < 0)
457 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
460 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
461 AVPacketList **plast_pktl){
462 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
467 (*plast_pktl)->next = pktl;
469 *packet_buffer = pktl;
471 /* add the packet in the buffered packet list */
477 int avformat_queue_attached_pictures(AVFormatContext *s)
480 for (i = 0; i < s->nb_streams; i++)
481 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
482 s->streams[i]->discard < AVDISCARD_ALL) {
483 AVPacket copy = s->streams[i]->attached_pic;
484 copy.buf = av_buffer_ref(copy.buf);
486 return AVERROR(ENOMEM);
488 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
493 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
495 AVFormatContext *s = *ps;
497 AVDictionary *tmp = NULL;
498 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
500 if (!s && !(s = avformat_alloc_context()))
501 return AVERROR(ENOMEM);
503 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
504 return AVERROR(EINVAL);
510 av_dict_copy(&tmp, *options, 0);
512 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
515 if ((ret = init_input(s, filename, &tmp)) < 0)
517 s->probe_score = ret;
518 avio_skip(s->pb, s->skip_initial_bytes);
520 /* check filename in case an image number is expected */
521 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
522 if (!av_filename_number_test(filename)) {
523 ret = AVERROR(EINVAL);
528 s->duration = s->start_time = AV_NOPTS_VALUE;
529 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
531 /* allocate private data */
532 if (s->iformat->priv_data_size > 0) {
533 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
534 ret = AVERROR(ENOMEM);
537 if (s->iformat->priv_class) {
538 *(const AVClass**)s->priv_data = s->iformat->priv_class;
539 av_opt_set_defaults(s->priv_data);
540 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
545 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
547 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
549 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
550 if ((ret = s->iformat->read_header(s)) < 0)
553 if (id3v2_extra_meta) {
554 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
555 !strcmp(s->iformat->name, "tta")) {
556 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
559 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
561 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
563 if ((ret = avformat_queue_attached_pictures(s)) < 0)
566 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
567 s->data_offset = avio_tell(s->pb);
569 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
572 av_dict_free(options);
579 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
581 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
583 avformat_free_context(s);
588 /*******************************************************/
590 static void force_codec_ids(AVFormatContext *s, AVStream *st)
592 switch(st->codec->codec_type){
593 case AVMEDIA_TYPE_VIDEO:
594 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
596 case AVMEDIA_TYPE_AUDIO:
597 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
599 case AVMEDIA_TYPE_SUBTITLE:
600 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
605 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
607 if(st->request_probe>0){
608 AVProbeData *pd = &st->probe_data;
610 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
614 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
616 av_log(s, AV_LOG_WARNING,
617 "Failed to reallocate probe buffer for stream %d\n",
622 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
623 pd->buf_size += pkt->size;
624 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
627 st->probe_packets = 0;
629 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
634 end= s->raw_packet_buffer_remaining_size <= 0
635 || st->probe_packets<=0;
637 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
638 int score= set_codec_from_probe_data(s, st, pd);
639 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
643 st->request_probe= -1;
644 if(st->codec->codec_id != AV_CODEC_ID_NONE){
645 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
647 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
649 force_codec_ids(s, st);
655 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
657 int64_t ref = pkt->dts;
658 int i, pts_wrap_behavior;
659 int64_t pts_wrap_reference;
660 AVProgram *first_program;
662 if (ref == AV_NOPTS_VALUE)
664 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
666 ref &= (1LL<<st->pts_wrap_bits)-1;
668 // reference time stamp should be 60 s before first time stamp
669 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
670 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
671 pts_wrap_behavior = (ref < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
672 (ref < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
673 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
675 first_program = av_find_program_from_stream(s, NULL, stream_index);
677 if (!first_program) {
678 int default_stream_index = av_find_default_stream_index(s);
679 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
680 for (i=0; i<s->nb_streams; i++) {
681 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
682 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
686 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
687 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
691 AVProgram *program = first_program;
693 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
694 pts_wrap_reference = program->pts_wrap_reference;
695 pts_wrap_behavior = program->pts_wrap_behavior;
698 program = av_find_program_from_stream(s, program, stream_index);
701 // update every program with differing pts_wrap_reference
702 program = first_program;
704 if (program->pts_wrap_reference != pts_wrap_reference) {
705 for (i=0; i<program->nb_stream_indexes; i++) {
706 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
707 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
710 program->pts_wrap_reference = pts_wrap_reference;
711 program->pts_wrap_behavior = pts_wrap_behavior;
713 program = av_find_program_from_stream(s, program, stream_index);
719 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
725 AVPacketList *pktl = s->raw_packet_buffer;
729 st = s->streams[pkt->stream_index];
730 if (s->raw_packet_buffer_remaining_size <= 0) {
731 if ((err = probe_codec(s, st, NULL)) < 0)
734 if(st->request_probe <= 0){
735 s->raw_packet_buffer = pktl->next;
736 s->raw_packet_buffer_remaining_size += pkt->size;
745 ret= s->iformat->read_packet(s, pkt);
747 if (!pktl || ret == AVERROR(EAGAIN))
749 for (i = 0; i < s->nb_streams; i++) {
751 if (st->probe_packets) {
752 if ((err = probe_codec(s, st, NULL)) < 0)
755 av_assert0(st->request_probe <= 0);
760 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
761 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
762 av_log(s, AV_LOG_WARNING,
763 "Dropped corrupted packet (stream = %d)\n",
769 if(pkt->stream_index >= (unsigned)s->nb_streams){
770 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
774 st= s->streams[pkt->stream_index];
776 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
777 // correct first time stamps to negative values
778 if (!is_relative(st->first_dts))
779 st->first_dts = wrap_timestamp(st, st->first_dts);
780 if (!is_relative(st->start_time))
781 st->start_time = wrap_timestamp(st, st->start_time);
782 if (!is_relative(st->cur_dts))
783 st->cur_dts = wrap_timestamp(st, st->cur_dts);
786 pkt->dts = wrap_timestamp(st, pkt->dts);
787 pkt->pts = wrap_timestamp(st, pkt->pts);
789 force_codec_ids(s, st);
791 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
792 if (s->use_wallclock_as_timestamps)
793 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
795 if(!pktl && st->request_probe <= 0)
798 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
799 s->raw_packet_buffer_remaining_size -= pkt->size;
801 if ((err = probe_codec(s, st, pkt)) < 0)
806 #if FF_API_READ_PACKET
807 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
809 return ff_read_packet(s, pkt);
814 /**********************************************************/
816 static int determinable_frame_size(AVCodecContext *avctx)
818 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
819 avctx->codec_id == AV_CODEC_ID_MP1 ||
820 avctx->codec_id == AV_CODEC_ID_MP2 ||
821 avctx->codec_id == AV_CODEC_ID_MP3/* ||
822 avctx->codec_id == AV_CODEC_ID_CELT*/)
828 * Get the number of samples of an audio frame. Return -1 on error.
830 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
834 /* give frame_size priority if demuxing */
835 if (!mux && enc->frame_size > 1)
836 return enc->frame_size;
838 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
841 /* Fall back on using frame_size if muxing. */
842 if (enc->frame_size > 1)
843 return enc->frame_size;
845 //For WMA we currently have no other means to calculate duration thus we
846 //do it here by assuming CBR, which is true for all known cases.
847 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
848 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
849 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
857 * Return the frame duration in seconds. Return 0 if not available.
859 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
860 AVCodecParserContext *pc, AVPacket *pkt)
866 switch(st->codec->codec_type) {
867 case AVMEDIA_TYPE_VIDEO:
868 if (st->r_frame_rate.num && !pc) {
869 *pnum = st->r_frame_rate.den;
870 *pden = st->r_frame_rate.num;
871 } else if(st->time_base.num*1000LL > st->time_base.den) {
872 *pnum = st->time_base.num;
873 *pden = st->time_base.den;
874 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
875 *pnum = st->codec->time_base.num;
876 *pden = st->codec->time_base.den;
877 if (pc && pc->repeat_pict) {
878 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
879 *pden /= 1 + pc->repeat_pict;
881 *pnum *= 1 + pc->repeat_pict;
883 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
884 //Thus if we have no parser in such case leave duration undefined.
885 if(st->codec->ticks_per_frame>1 && !pc){
890 case AVMEDIA_TYPE_AUDIO:
891 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
892 if (frame_size <= 0 || st->codec->sample_rate <= 0)
895 *pden = st->codec->sample_rate;
902 static int is_intra_only(AVCodecContext *enc){
903 const AVCodecDescriptor *desc;
905 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
908 desc = av_codec_get_codec_descriptor(enc);
910 desc = avcodec_descriptor_get(enc->codec_id);
911 av_codec_set_codec_descriptor(enc, desc);
914 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
918 static int has_decode_delay_been_guessed(AVStream *st)
920 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
921 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
923 #if CONFIG_H264_DECODER
924 if(st->codec->has_b_frames &&
925 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
928 if(st->codec->has_b_frames<3)
929 return st->nb_decoded_frames >= 7;
930 else if(st->codec->has_b_frames<4)
931 return st->nb_decoded_frames >= 18;
933 return st->nb_decoded_frames >= 20;
936 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
940 if (pktl == s->packet_buffer_end)
941 return s->parse_queue;
945 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
946 int64_t dts, int64_t pts, AVPacket *pkt)
948 AVStream *st= s->streams[stream_index];
949 AVPacketList *pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
950 int64_t pts_buffer[MAX_REORDER_DELAY+1];
954 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
957 delay = st->codec->has_b_frames;
958 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
960 shift = st->first_dts - RELATIVE_TS_BASE;
962 for (i=0; i<MAX_REORDER_DELAY+1; i++)
963 pts_buffer[i] = AV_NOPTS_VALUE;
965 if (is_relative(pts))
968 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
969 if(pktl->pkt.stream_index != stream_index)
971 if(is_relative(pktl->pkt.pts))
972 pktl->pkt.pts += shift;
974 if(is_relative(pktl->pkt.dts))
975 pktl->pkt.dts += shift;
977 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
978 st->start_time= pktl->pkt.pts;
980 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
981 pts_buffer[0]= pktl->pkt.pts;
982 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
983 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
984 if(pktl->pkt.dts == AV_NOPTS_VALUE)
985 pktl->pkt.dts= pts_buffer[0];
989 if (st->start_time == AV_NOPTS_VALUE)
990 st->start_time = pts;
993 static void update_initial_durations(AVFormatContext *s, AVStream *st,
994 int stream_index, int duration)
996 AVPacketList *pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
997 int64_t cur_dts= RELATIVE_TS_BASE;
999 if(st->first_dts != AV_NOPTS_VALUE){
1000 if (st->update_initial_durations_done)
1002 st->update_initial_durations_done = 1;
1003 cur_dts= st->first_dts;
1004 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1005 if(pktl->pkt.stream_index == stream_index){
1006 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1008 cur_dts -= duration;
1011 if(pktl && pktl->pkt.dts != st->first_dts) {
1012 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
1013 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1017 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1020 pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
1021 st->first_dts = cur_dts;
1022 }else if(st->cur_dts != RELATIVE_TS_BASE)
1025 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1026 if(pktl->pkt.stream_index != stream_index)
1028 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1029 && !pktl->pkt.duration){
1030 pktl->pkt.dts= cur_dts;
1031 if(!st->codec->has_b_frames)
1032 pktl->pkt.pts= cur_dts;
1033 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1034 pktl->pkt.duration = duration;
1037 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1040 st->cur_dts= cur_dts;
1043 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1044 AVCodecParserContext *pc, AVPacket *pkt)
1046 int num, den, presentation_delayed, delay, i;
1048 AVRational duration;
1050 if (s->flags & AVFMT_FLAG_NOFILLIN)
1053 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1054 pkt->dts= AV_NOPTS_VALUE;
1056 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1057 && !st->codec->has_b_frames)
1058 //FIXME Set low_delay = 0 when has_b_frames = 1
1059 st->codec->has_b_frames = 1;
1061 /* do we have a video B-frame ? */
1062 delay= st->codec->has_b_frames;
1063 presentation_delayed = 0;
1065 /* XXX: need has_b_frame, but cannot get it if the codec is
1068 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1069 presentation_delayed = 1;
1071 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1072 st->pts_wrap_bits < 63 &&
1073 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1074 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1075 pkt->dts -= 1LL<<st->pts_wrap_bits;
1077 pkt->pts += 1LL<<st->pts_wrap_bits;
1080 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1081 // we take the conservative approach and discard both
1082 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1083 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1084 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1085 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1086 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1087 pkt->dts= AV_NOPTS_VALUE;
1090 duration = av_mul_q((AVRational){pkt->duration, 1}, st->time_base);
1091 if (pkt->duration == 0) {
1092 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1094 duration = (AVRational){num, den};
1095 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1099 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1100 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1102 /* correct timestamps with byte offset if demuxers only have timestamps
1103 on packet boundaries */
1104 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1105 /* this will estimate bitrate based on this frame's duration and size */
1106 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1107 if(pkt->pts != AV_NOPTS_VALUE)
1109 if(pkt->dts != AV_NOPTS_VALUE)
1113 /* This may be redundant, but it should not hurt. */
1114 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1115 presentation_delayed = 1;
1117 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1118 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1119 /* interpolate PTS and DTS if they are not present */
1120 //We skip H264 currently because delay and has_b_frames are not reliably set
1121 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1122 if (presentation_delayed) {
1123 /* DTS = decompression timestamp */
1124 /* PTS = presentation timestamp */
1125 if (pkt->dts == AV_NOPTS_VALUE)
1126 pkt->dts = st->last_IP_pts;
1127 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1128 if (pkt->dts == AV_NOPTS_VALUE)
1129 pkt->dts = st->cur_dts;
1131 /* this is tricky: the dts must be incremented by the duration
1132 of the frame we are displaying, i.e. the last I- or P-frame */
1133 if (st->last_IP_duration == 0)
1134 st->last_IP_duration = pkt->duration;
1135 if(pkt->dts != AV_NOPTS_VALUE)
1136 st->cur_dts = pkt->dts + st->last_IP_duration;
1137 st->last_IP_duration = pkt->duration;
1138 st->last_IP_pts= pkt->pts;
1139 /* cannot compute PTS if not present (we can compute it only
1140 by knowing the future */
1141 } else if (pkt->pts != AV_NOPTS_VALUE ||
1142 pkt->dts != AV_NOPTS_VALUE ||
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 = av_add_stable(st->time_base, pkt->pts, duration, 1);
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);
1417 AVStream *st = s->streams[pkt->stream_index];
1418 if (st->skip_samples) {
1419 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1421 AV_WL32(p, st->skip_samples);
1422 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1424 st->skip_samples = 0;
1428 if(ret >= 0 && !(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1429 av_packet_merge_side_data(pkt);
1431 if(s->debug & FF_FDEBUG_TS)
1432 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1434 av_ts2str(pkt->pts),
1435 av_ts2str(pkt->dts),
1443 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1445 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1451 ret = s->packet_buffer ?
1452 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1453 read_frame_internal(s, pkt);
1460 AVPacketList *pktl = s->packet_buffer;
1463 AVPacket *next_pkt = &pktl->pkt;
1465 if (next_pkt->dts != AV_NOPTS_VALUE) {
1466 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1467 // last dts seen for this stream. if any of packets following
1468 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1469 int64_t last_dts = next_pkt->dts;
1470 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1471 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1472 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1473 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1474 next_pkt->pts = pktl->pkt.dts;
1476 if (last_dts != AV_NOPTS_VALUE) {
1477 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1478 last_dts = pktl->pkt.dts;
1483 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1484 // Fixing the last reference frame had none pts issue (For MXF etc).
1485 // We only do this when
1487 // 2. we are not able to resolve a pts value for current packet.
1488 // 3. the packets for this stream at the end of the files had valid dts.
1489 next_pkt->pts = last_dts + next_pkt->duration;
1491 pktl = s->packet_buffer;
1494 /* read packet from packet buffer, if there is data */
1495 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1496 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1497 ret = read_from_packet_buffer(&s->packet_buffer,
1498 &s->packet_buffer_end, pkt);
1503 ret = read_frame_internal(s, pkt);
1505 if (pktl && ret != AVERROR(EAGAIN)) {
1512 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1513 &s->packet_buffer_end)) < 0)
1514 return AVERROR(ENOMEM);
1519 st = s->streams[pkt->stream_index];
1520 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1521 ff_reduce_index(s, st->index);
1522 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1525 if (is_relative(pkt->dts))
1526 pkt->dts -= RELATIVE_TS_BASE;
1527 if (is_relative(pkt->pts))
1528 pkt->pts -= RELATIVE_TS_BASE;
1533 /* XXX: suppress the packet queue */
1534 static void flush_packet_queue(AVFormatContext *s)
1536 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1537 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1538 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1540 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1543 /*******************************************************/
1546 int av_find_default_stream_index(AVFormatContext *s)
1548 int first_audio_index = -1;
1552 if (s->nb_streams <= 0)
1554 for(i = 0; i < s->nb_streams; i++) {
1556 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1557 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1560 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1561 first_audio_index = i;
1563 return first_audio_index >= 0 ? first_audio_index : 0;
1567 * Flush the frame reader.
1569 void ff_read_frame_flush(AVFormatContext *s)
1574 flush_packet_queue(s);
1576 /* for each stream, reset read state */
1577 for(i = 0; i < s->nb_streams; i++) {
1581 av_parser_close(st->parser);
1584 st->last_IP_pts = AV_NOPTS_VALUE;
1585 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1586 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1588 st->probe_packets = MAX_PROBE_PACKETS;
1590 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1591 st->pts_buffer[j]= AV_NOPTS_VALUE;
1595 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1599 for(i = 0; i < s->nb_streams; i++) {
1600 AVStream *st = s->streams[i];
1602 st->cur_dts = av_rescale(timestamp,
1603 st->time_base.den * (int64_t)ref_st->time_base.num,
1604 st->time_base.num * (int64_t)ref_st->time_base.den);
1608 void ff_reduce_index(AVFormatContext *s, int stream_index)
1610 AVStream *st= s->streams[stream_index];
1611 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1613 if((unsigned)st->nb_index_entries >= max_entries){
1615 for(i=0; 2*i<st->nb_index_entries; i++)
1616 st->index_entries[i]= st->index_entries[2*i];
1617 st->nb_index_entries= i;
1621 int ff_add_index_entry(AVIndexEntry **index_entries,
1622 int *nb_index_entries,
1623 unsigned int *index_entries_allocated_size,
1624 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1626 AVIndexEntry *entries, *ie;
1629 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1632 if(timestamp == AV_NOPTS_VALUE)
1633 return AVERROR(EINVAL);
1635 if (size < 0 || size > 0x3FFFFFFF)
1636 return AVERROR(EINVAL);
1638 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1639 timestamp -= RELATIVE_TS_BASE;
1641 entries = av_fast_realloc(*index_entries,
1642 index_entries_allocated_size,
1643 (*nb_index_entries + 1) *
1644 sizeof(AVIndexEntry));
1648 *index_entries= entries;
1650 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1653 index= (*nb_index_entries)++;
1654 ie= &entries[index];
1655 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1657 ie= &entries[index];
1658 if(ie->timestamp != timestamp){
1659 if(ie->timestamp <= timestamp)
1661 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1662 (*nb_index_entries)++;
1663 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1664 distance= ie->min_distance;
1668 ie->timestamp = timestamp;
1669 ie->min_distance= distance;
1676 int av_add_index_entry(AVStream *st,
1677 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1679 timestamp = wrap_timestamp(st, timestamp);
1680 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1681 &st->index_entries_allocated_size, pos,
1682 timestamp, size, distance, flags);
1685 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1686 int64_t wanted_timestamp, int flags)
1694 //optimize appending index entries at the end
1695 if(b && entries[b-1].timestamp < wanted_timestamp)
1700 timestamp = entries[m].timestamp;
1701 if(timestamp >= wanted_timestamp)
1703 if(timestamp <= wanted_timestamp)
1706 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1708 if(!(flags & AVSEEK_FLAG_ANY)){
1709 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1710 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1719 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1722 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1723 wanted_timestamp, flags);
1726 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1727 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1729 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1730 if (stream_index >= 0)
1731 ts = wrap_timestamp(s->streams[stream_index], ts);
1735 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1737 AVInputFormat *avif= s->iformat;
1738 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1739 int64_t ts_min, ts_max, ts;
1744 if (stream_index < 0)
1747 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1750 ts_min= AV_NOPTS_VALUE;
1751 pos_limit= -1; //gcc falsely says it may be uninitialized
1753 st= s->streams[stream_index];
1754 if(st->index_entries){
1757 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()
1758 index= FFMAX(index, 0);
1759 e= &st->index_entries[index];
1761 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1763 ts_min= e->timestamp;
1764 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1765 pos_min, av_ts2str(ts_min));
1767 av_assert1(index==0);
1770 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1771 av_assert0(index < st->nb_index_entries);
1773 e= &st->index_entries[index];
1774 av_assert1(e->timestamp >= target_ts);
1776 ts_max= e->timestamp;
1777 pos_limit= pos_max - e->min_distance;
1778 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1779 pos_max, pos_limit, av_ts2str(ts_max));
1783 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1788 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1791 ff_read_frame_flush(s);
1792 ff_update_cur_dts(s, st, ts);
1797 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1798 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1801 int64_t limit, ts_max;
1802 int64_t filesize = avio_size(s->pb);
1803 int64_t pos_max = filesize - 1;
1806 pos_max = FFMAX(0, (pos_max) - step);
1807 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1809 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1810 if (ts_max == AV_NOPTS_VALUE)
1814 int64_t tmp_pos = pos_max + 1;
1815 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1816 if(tmp_ts == AV_NOPTS_VALUE)
1818 av_assert0(tmp_pos > pos_max);
1821 if(tmp_pos >= filesize)
1833 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1834 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1835 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1836 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1843 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1845 if(ts_min == AV_NOPTS_VALUE){
1846 pos_min = s->data_offset;
1847 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1848 if (ts_min == AV_NOPTS_VALUE)
1852 if(ts_min >= target_ts){
1857 if(ts_max == AV_NOPTS_VALUE){
1858 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1863 if(ts_max <= target_ts){
1868 if(ts_min > ts_max){
1870 }else if(ts_min == ts_max){
1875 while (pos_min < pos_limit) {
1876 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1877 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1878 assert(pos_limit <= pos_max);
1881 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1882 // interpolate position (better than dichotomy)
1883 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1884 + pos_min - approximate_keyframe_distance;
1885 }else if(no_change==1){
1886 // bisection, if interpolation failed to change min or max pos last time
1887 pos = (pos_min + pos_limit)>>1;
1889 /* linear search if bisection failed, can only happen if there
1890 are very few or no keyframes between min/max */
1895 else if(pos > pos_limit)
1899 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1904 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1905 pos_min, pos, pos_max,
1906 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1907 pos_limit, start_pos, no_change);
1908 if(ts == AV_NOPTS_VALUE){
1909 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1912 assert(ts != AV_NOPTS_VALUE);
1913 if (target_ts <= ts) {
1914 pos_limit = start_pos - 1;
1918 if (target_ts >= ts) {
1924 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1925 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1928 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1930 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1931 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1932 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1938 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1939 int64_t pos_min, pos_max;
1941 pos_min = s->data_offset;
1942 pos_max = avio_size(s->pb) - 1;
1944 if (pos < pos_min) pos= pos_min;
1945 else if(pos > pos_max) pos= pos_max;
1947 avio_seek(s->pb, pos, SEEK_SET);
1949 s->io_repositioned = 1;
1954 static int seek_frame_generic(AVFormatContext *s,
1955 int stream_index, int64_t timestamp, int flags)
1962 st = s->streams[stream_index];
1964 index = av_index_search_timestamp(st, timestamp, flags);
1966 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1969 if(index < 0 || index==st->nb_index_entries-1){
1973 if(st->nb_index_entries){
1974 av_assert0(st->index_entries);
1975 ie= &st->index_entries[st->nb_index_entries-1];
1976 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1978 ff_update_cur_dts(s, st, ie->timestamp);
1980 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1986 read_status = av_read_frame(s, &pkt);
1987 } while (read_status == AVERROR(EAGAIN));
1988 if (read_status < 0)
1990 av_free_packet(&pkt);
1991 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1992 if(pkt.flags & AV_PKT_FLAG_KEY)
1994 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1995 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);
2000 index = av_index_search_timestamp(st, timestamp, flags);
2005 ff_read_frame_flush(s);
2006 if (s->iformat->read_seek){
2007 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2010 ie = &st->index_entries[index];
2011 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2013 ff_update_cur_dts(s, st, ie->timestamp);
2018 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2019 int64_t timestamp, int flags)
2024 if (flags & AVSEEK_FLAG_BYTE) {
2025 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2027 ff_read_frame_flush(s);
2028 return seek_frame_byte(s, stream_index, timestamp, flags);
2031 if(stream_index < 0){
2032 stream_index= av_find_default_stream_index(s);
2033 if(stream_index < 0)
2036 st= s->streams[stream_index];
2037 /* timestamp for default must be expressed in AV_TIME_BASE units */
2038 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2041 /* first, we try the format specific seek */
2042 if (s->iformat->read_seek) {
2043 ff_read_frame_flush(s);
2044 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2051 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2052 ff_read_frame_flush(s);
2053 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2054 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2055 ff_read_frame_flush(s);
2056 return seek_frame_generic(s, stream_index, timestamp, flags);
2062 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2066 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2067 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2068 if ((flags & AVSEEK_FLAG_BACKWARD))
2072 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2073 flags & ~AVSEEK_FLAG_BACKWARD);
2076 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2079 ret = avformat_queue_attached_pictures(s);
2084 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2086 if(min_ts > ts || max_ts < ts)
2088 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2089 return AVERROR(EINVAL);
2092 flags |= AVSEEK_FLAG_ANY;
2093 flags &= ~AVSEEK_FLAG_BACKWARD;
2095 if (s->iformat->read_seek2) {
2097 ff_read_frame_flush(s);
2099 if (stream_index == -1 && s->nb_streams == 1) {
2100 AVRational time_base = s->streams[0]->time_base;
2101 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2102 min_ts = av_rescale_rnd(min_ts, time_base.den,
2103 time_base.num * (int64_t)AV_TIME_BASE,
2104 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2105 max_ts = av_rescale_rnd(max_ts, time_base.den,
2106 time_base.num * (int64_t)AV_TIME_BASE,
2107 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2110 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2113 ret = avformat_queue_attached_pictures(s);
2117 if(s->iformat->read_timestamp){
2118 //try to seek via read_timestamp()
2121 // Fall back on old API if new is not implemented but old is.
2122 // Note the old API has somewhat different semantics.
2123 if (s->iformat->read_seek || 1) {
2124 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2125 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2126 if (ret<0 && ts != min_ts && max_ts != ts) {
2127 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2129 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2134 // try some generic seek like seek_frame_generic() but with new ts semantics
2135 return -1; //unreachable
2138 /*******************************************************/
2141 * Return TRUE if the stream has accurate duration in any stream.
2143 * @return TRUE if the stream has accurate duration for at least one component.
2145 static int has_duration(AVFormatContext *ic)
2150 for(i = 0;i < ic->nb_streams; i++) {
2151 st = ic->streams[i];
2152 if (st->duration != AV_NOPTS_VALUE)
2155 if (ic->duration != AV_NOPTS_VALUE)
2161 * Estimate the stream timings from the one of each components.
2163 * Also computes the global bitrate if possible.
2165 static void update_stream_timings(AVFormatContext *ic)
2167 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2168 int64_t duration, duration1, filesize;
2173 start_time = INT64_MAX;
2174 start_time_text = INT64_MAX;
2175 end_time = INT64_MIN;
2176 duration = INT64_MIN;
2177 for(i = 0;i < ic->nb_streams; i++) {
2178 st = ic->streams[i];
2179 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2180 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2181 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2182 if (start_time1 < start_time_text)
2183 start_time_text = start_time1;
2185 start_time = FFMIN(start_time, start_time1);
2186 end_time1 = AV_NOPTS_VALUE;
2187 if (st->duration != AV_NOPTS_VALUE) {
2188 end_time1 = start_time1
2189 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2190 end_time = FFMAX(end_time, end_time1);
2192 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2193 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2194 p->start_time = start_time1;
2195 if(p->end_time < end_time1)
2196 p->end_time = end_time1;
2199 if (st->duration != AV_NOPTS_VALUE) {
2200 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2201 duration = FFMAX(duration, duration1);
2204 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2205 start_time = start_time_text;
2206 else if(start_time > start_time_text)
2207 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2209 if (start_time != INT64_MAX) {
2210 ic->start_time = start_time;
2211 if (end_time != INT64_MIN) {
2212 if (ic->nb_programs) {
2213 for (i=0; i<ic->nb_programs; i++) {
2214 p = ic->programs[i];
2215 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2216 duration = FFMAX(duration, p->end_time - p->start_time);
2219 duration = FFMAX(duration, end_time - start_time);
2222 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2223 ic->duration = duration;
2225 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2226 /* compute the bitrate */
2227 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2228 (double)ic->duration;
2229 if (bitrate >= 0 && bitrate <= INT_MAX)
2230 ic->bit_rate = bitrate;
2234 static void fill_all_stream_timings(AVFormatContext *ic)
2239 update_stream_timings(ic);
2240 for(i = 0;i < ic->nb_streams; i++) {
2241 st = ic->streams[i];
2242 if (st->start_time == AV_NOPTS_VALUE) {
2243 if(ic->start_time != AV_NOPTS_VALUE)
2244 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2245 if(ic->duration != AV_NOPTS_VALUE)
2246 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2251 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2253 int64_t filesize, duration;
2254 int i, show_warning = 0;
2257 /* if bit_rate is already set, we believe it */
2258 if (ic->bit_rate <= 0) {
2260 for(i=0;i<ic->nb_streams;i++) {
2261 st = ic->streams[i];
2262 if (st->codec->bit_rate > 0) {
2263 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2267 bit_rate += st->codec->bit_rate;
2270 ic->bit_rate = bit_rate;
2273 /* if duration is already set, we believe it */
2274 if (ic->duration == AV_NOPTS_VALUE &&
2275 ic->bit_rate != 0) {
2276 filesize = ic->pb ? avio_size(ic->pb) : 0;
2278 for(i = 0; i < ic->nb_streams; i++) {
2279 st = ic->streams[i];
2280 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2281 && st->duration == AV_NOPTS_VALUE) {
2282 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2283 st->duration = duration;
2290 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2293 #define DURATION_MAX_READ_SIZE 250000LL
2294 #define DURATION_MAX_RETRY 4
2296 /* only usable for MPEG-PS streams */
2297 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2299 AVPacket pkt1, *pkt = &pkt1;
2301 int read_size, i, ret;
2303 int64_t filesize, offset, duration;
2306 /* flush packet queue */
2307 flush_packet_queue(ic);
2309 for (i=0; i<ic->nb_streams; i++) {
2310 st = ic->streams[i];
2311 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2312 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2315 av_parser_close(st->parser);
2320 /* estimate the end time (duration) */
2321 /* XXX: may need to support wrapping */
2322 filesize = ic->pb ? avio_size(ic->pb) : 0;
2323 end_time = AV_NOPTS_VALUE;
2325 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2329 avio_seek(ic->pb, offset, SEEK_SET);
2332 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2336 ret = ff_read_packet(ic, pkt);
2337 } while(ret == AVERROR(EAGAIN));
2340 read_size += pkt->size;
2341 st = ic->streams[pkt->stream_index];
2342 if (pkt->pts != AV_NOPTS_VALUE &&
2343 (st->start_time != AV_NOPTS_VALUE ||
2344 st->first_dts != AV_NOPTS_VALUE)) {
2345 duration = end_time = pkt->pts;
2346 if (st->start_time != AV_NOPTS_VALUE)
2347 duration -= st->start_time;
2349 duration -= st->first_dts;
2351 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2352 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2353 st->duration = duration;
2354 st->info->last_duration = duration;
2357 av_free_packet(pkt);
2359 }while( end_time==AV_NOPTS_VALUE
2360 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2361 && ++retry <= DURATION_MAX_RETRY);
2363 fill_all_stream_timings(ic);
2365 avio_seek(ic->pb, old_offset, SEEK_SET);
2366 for (i=0; i<ic->nb_streams; i++) {
2368 st->cur_dts= st->first_dts;
2369 st->last_IP_pts = AV_NOPTS_VALUE;
2373 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2377 /* get the file size, if possible */
2378 if (ic->iformat->flags & AVFMT_NOFILE) {
2381 file_size = avio_size(ic->pb);
2382 file_size = FFMAX(0, file_size);
2385 if ((!strcmp(ic->iformat->name, "mpeg") ||
2386 !strcmp(ic->iformat->name, "mpegts")) &&
2387 file_size && ic->pb->seekable) {
2388 /* get accurate estimate from the PTSes */
2389 estimate_timings_from_pts(ic, old_offset);
2390 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2391 } else if (has_duration(ic)) {
2392 /* at least one component has timings - we use them for all
2394 fill_all_stream_timings(ic);
2395 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2397 /* less precise: use bitrate info */
2398 estimate_timings_from_bit_rate(ic);
2399 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2401 update_stream_timings(ic);
2405 AVStream av_unused *st;
2406 for(i = 0;i < ic->nb_streams; i++) {
2407 st = ic->streams[i];
2408 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2409 (double) st->start_time / AV_TIME_BASE,
2410 (double) st->duration / AV_TIME_BASE);
2412 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2413 (double) ic->start_time / AV_TIME_BASE,
2414 (double) ic->duration / AV_TIME_BASE,
2415 ic->bit_rate / 1000);
2419 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2421 AVCodecContext *avctx = st->codec;
2423 #define FAIL(errmsg) do { \
2425 *errmsg_ptr = errmsg; \
2429 switch (avctx->codec_type) {
2430 case AVMEDIA_TYPE_AUDIO:
2431 if (!avctx->frame_size && determinable_frame_size(avctx))
2432 FAIL("unspecified frame size");
2433 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2434 FAIL("unspecified sample format");
2435 if (!avctx->sample_rate)
2436 FAIL("unspecified sample rate");
2437 if (!avctx->channels)
2438 FAIL("unspecified number of channels");
2439 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2440 FAIL("no decodable DTS frames");
2442 case AVMEDIA_TYPE_VIDEO:
2444 FAIL("unspecified size");
2445 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2446 FAIL("unspecified pixel format");
2447 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2448 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2449 FAIL("no frame in rv30/40 and no sar");
2451 case AVMEDIA_TYPE_SUBTITLE:
2452 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2453 FAIL("unspecified size");
2455 case AVMEDIA_TYPE_DATA:
2456 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2459 if (avctx->codec_id == AV_CODEC_ID_NONE)
2460 FAIL("unknown codec");
2464 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2465 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options)
2467 const AVCodec *codec;
2468 int got_picture = 1, ret = 0;
2469 AVFrame *frame = av_frame_alloc();
2470 AVSubtitle subtitle;
2471 AVPacket pkt = *avpkt;
2474 return AVERROR(ENOMEM);
2476 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2477 AVDictionary *thread_opt = NULL;
2479 codec = find_decoder(s, st, st->codec->codec_id);
2482 st->info->found_decoder = -1;
2487 /* force thread count to 1 since the h264 decoder will not extract SPS
2488 * and PPS to extradata during multi-threaded decoding */
2489 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2490 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2492 av_dict_free(&thread_opt);
2494 st->info->found_decoder = -1;
2497 st->info->found_decoder = 1;
2498 } else if (!st->info->found_decoder)
2499 st->info->found_decoder = 1;
2501 if (st->info->found_decoder < 0) {
2506 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2508 (!has_codec_parameters(st, NULL) ||
2509 !has_decode_delay_been_guessed(st) ||
2510 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2512 switch(st->codec->codec_type) {
2513 case AVMEDIA_TYPE_VIDEO:
2514 ret = avcodec_decode_video2(st->codec, frame,
2515 &got_picture, &pkt);
2517 case AVMEDIA_TYPE_AUDIO:
2518 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2520 case AVMEDIA_TYPE_SUBTITLE:
2521 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2522 &got_picture, &pkt);
2530 st->nb_decoded_frames++;
2537 if(!pkt.data && !got_picture)
2541 av_frame_free(&frame);
2545 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2547 while (tags->id != AV_CODEC_ID_NONE) {
2555 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2558 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2559 if(tag == tags[i].tag)
2562 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2563 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2566 return AV_CODEC_ID_NONE;
2569 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2573 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2574 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2575 default: return AV_CODEC_ID_NONE;
2580 if (sflags & (1 << (bps - 1))) {
2582 case 1: return AV_CODEC_ID_PCM_S8;
2583 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2584 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2585 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2586 default: return AV_CODEC_ID_NONE;
2590 case 1: return AV_CODEC_ID_PCM_U8;
2591 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2592 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2593 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2594 default: return AV_CODEC_ID_NONE;
2600 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2603 if (!av_codec_get_tag2(tags, id, &tag))
2608 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2612 for(i=0; tags && tags[i]; i++){
2613 const AVCodecTag *codec_tags = tags[i];
2614 while (codec_tags->id != AV_CODEC_ID_NONE) {
2615 if (codec_tags->id == id) {
2616 *tag = codec_tags->tag;
2625 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2628 for(i=0; tags && tags[i]; i++){
2629 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2630 if(id!=AV_CODEC_ID_NONE) return id;
2632 return AV_CODEC_ID_NONE;
2635 static void compute_chapters_end(AVFormatContext *s)
2638 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2640 for (i = 0; i < s->nb_chapters; i++)
2641 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2642 AVChapter *ch = s->chapters[i];
2643 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2646 for (j = 0; j < s->nb_chapters; j++) {
2647 AVChapter *ch1 = s->chapters[j];
2648 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2649 if (j != i && next_start > ch->start && next_start < end)
2652 ch->end = (end == INT64_MAX) ? ch->start : end;
2656 static int get_std_framerate(int i){
2657 if(i<60*12) return (i+1)*1001;
2658 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2662 * Is the time base unreliable.
2663 * This is a heuristic to balance between quick acceptance of the values in
2664 * the headers vs. some extra checks.
2665 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2666 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2667 * And there are "variable" fps files this needs to detect as well.
2669 static int tb_unreliable(AVCodecContext *c){
2670 if( c->time_base.den >= 101L*c->time_base.num
2671 || c->time_base.den < 5L*c->time_base.num
2672 /* || c->codec_tag == AV_RL32("DIVX")
2673 || c->codec_tag == AV_RL32("XVID")*/
2674 || c->codec_tag == AV_RL32("mp4v")
2675 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2676 || c->codec_id == AV_CODEC_ID_H264
2682 #if FF_API_FORMAT_PARAMETERS
2683 int av_find_stream_info(AVFormatContext *ic)
2685 return avformat_find_stream_info(ic, NULL);
2689 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2693 if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
2694 avctx->extradata_size = 0;
2695 return AVERROR(EINVAL);
2697 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2698 if (avctx->extradata) {
2699 memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2700 avctx->extradata_size = size;
2703 avctx->extradata_size = 0;
2704 ret = AVERROR(ENOMEM);
2709 int ff_get_extradata(AVCodecContext *avctx, AVIOContext *pb, int size)
2711 int ret = ff_alloc_extradata(avctx, size);
2714 ret = avio_read(pb, avctx->extradata, size);
2716 av_freep(&avctx->extradata);
2717 avctx->extradata_size = 0;
2718 av_log(avctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
2719 return ret < 0 ? ret : AVERROR_INVALIDDATA;
2725 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2728 int64_t last = st->info->last_dts;
2730 if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2731 && ts - (uint64_t)last < INT64_MAX){
2732 double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2733 int64_t duration= ts - last;
2735 if (!st->info->duration_error)
2736 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2737 if (!st->info->duration_error)
2738 return AVERROR(ENOMEM);
2740 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2741 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2742 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2743 if (st->info->duration_error[0][1][i] < 1e10) {
2744 int framerate= get_std_framerate(i);
2745 double sdts= dts*framerate/(1001*12);
2747 int64_t ticks= llrint(sdts+j*0.5);
2748 double error= sdts - ticks + j*0.5;
2749 st->info->duration_error[j][0][i] += error;
2750 st->info->duration_error[j][1][i] += error*error;
2754 st->info->duration_count++;
2755 st->info->rfps_duration_sum += duration;
2757 if (st->info->duration_count % 10 == 0) {
2758 int n = st->info->duration_count;
2759 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2760 if (st->info->duration_error[0][1][i] < 1e10) {
2761 double a0 = st->info->duration_error[0][0][i] / n;
2762 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2763 double a1 = st->info->duration_error[1][0][i] / n;
2764 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
2765 if (error0 > 0.04 && error1 > 0.04) {
2766 st->info->duration_error[0][1][i] = 2e10;
2767 st->info->duration_error[1][1][i] = 2e10;
2773 // ignore the first 4 values, they might have some random jitter
2774 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
2775 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2777 if (ts != AV_NOPTS_VALUE)
2778 st->info->last_dts = ts;
2783 void ff_rfps_calculate(AVFormatContext *ic)
2787 for (i = 0; i<ic->nb_streams; i++) {
2788 AVStream *st = ic->streams[i];
2790 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2792 // the check for tb_unreliable() is not completely correct, since this is not about handling
2793 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2794 // ipmovie.c produces.
2795 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)
2796 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);
2797 if (st->info->duration_count>1 && !st->r_frame_rate.num
2798 && tb_unreliable(st->codec)) {
2800 double best_error= 0.01;
2802 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2805 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2807 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2810 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
2814 int n= st->info->duration_count;
2815 double a= st->info->duration_error[k][0][j] / n;
2816 double error= st->info->duration_error[k][1][j]/n - a*a;
2818 if(error < best_error && best_error> 0.000000001){
2820 num = get_std_framerate(j);
2823 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2826 // do not increase frame rate by more than 1 % in order to match a standard rate.
2827 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2828 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2831 av_freep(&st->info->duration_error);
2832 st->info->last_dts = AV_NOPTS_VALUE;
2833 st->info->duration_count = 0;
2834 st->info->rfps_duration_sum = 0;
2838 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2840 int i, count, ret = 0, j;
2843 AVPacket pkt1, *pkt;
2844 int64_t old_offset = avio_tell(ic->pb);
2845 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2846 int flush_codecs = ic->probesize > 0;
2849 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
2850 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
2852 for(i=0;i<ic->nb_streams;i++) {
2853 const AVCodec *codec;
2854 AVDictionary *thread_opt = NULL;
2855 st = ic->streams[i];
2857 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2858 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2859 /* if(!st->time_base.num)
2861 if(!st->codec->time_base.num)
2862 st->codec->time_base= st->time_base;
2864 //only for the split stuff
2865 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2866 st->parser = av_parser_init(st->codec->codec_id);
2868 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2869 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2870 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2871 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2873 } else if (st->need_parsing) {
2874 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2875 "%s, packets or times may be invalid.\n",
2876 avcodec_get_name(st->codec->codec_id));
2879 codec = find_decoder(ic, st, st->codec->codec_id);
2881 /* force thread count to 1 since the h264 decoder will not extract SPS
2882 * and PPS to extradata during multi-threaded decoding */
2883 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2885 /* Ensure that subtitle_header is properly set. */
2886 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2887 && codec && !st->codec->codec) {
2888 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2889 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2892 //try to just open decoders, in case this is enough to get parameters
2893 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2894 if (codec && !st->codec->codec)
2895 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2896 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2899 av_dict_free(&thread_opt);
2902 for (i=0; i<ic->nb_streams; i++) {
2903 #if FF_API_R_FRAME_RATE
2904 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2906 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2907 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2913 if (ff_check_interrupt(&ic->interrupt_callback)){
2915 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2919 /* check if one codec still needs to be handled */
2920 for(i=0;i<ic->nb_streams;i++) {
2921 int fps_analyze_framecount = 20;
2923 st = ic->streams[i];
2924 if (!has_codec_parameters(st, NULL))
2926 /* if the timebase is coarse (like the usual millisecond precision
2927 of mkv), we need to analyze more frames to reliably arrive at
2929 if (av_q2d(st->time_base) > 0.0005)
2930 fps_analyze_framecount *= 2;
2931 if (ic->fps_probe_size >= 0)
2932 fps_analyze_framecount = ic->fps_probe_size;
2933 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2934 fps_analyze_framecount = 0;
2935 /* variable fps and no guess at the real fps */
2936 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2937 && st->info->duration_count < fps_analyze_framecount
2938 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2940 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2942 if (st->first_dts == AV_NOPTS_VALUE &&
2943 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2944 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2947 if (i == ic->nb_streams) {
2948 /* NOTE: if the format has no header, then we need to read
2949 some packets to get most of the streams, so we cannot
2951 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2952 /* if we found the info for all the codecs, we can stop */
2954 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2959 /* we did not get all the codec info, but we read too much data */
2960 if (read_size >= ic->probesize) {
2962 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2963 for (i = 0; i < ic->nb_streams; i++)
2964 if (!ic->streams[i]->r_frame_rate.num &&
2965 ic->streams[i]->info->duration_count <= 1 &&
2966 strcmp(ic->iformat->name, "image2"))
2967 av_log(ic, AV_LOG_WARNING,
2968 "Stream #%d: not enough frames to estimate rate; "
2969 "consider increasing probesize\n", i);
2973 /* NOTE: a new stream can be added there if no header in file
2974 (AVFMTCTX_NOHEADER) */
2975 ret = read_frame_internal(ic, &pkt1);
2976 if (ret == AVERROR(EAGAIN))
2984 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2985 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2987 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2988 &ic->packet_buffer_end);
2990 ret = AVERROR(ENOMEM);
2991 goto find_stream_info_err;
2993 if ((ret = av_dup_packet(pkt)) < 0)
2994 goto find_stream_info_err;
2997 st = ic->streams[pkt->stream_index];
2998 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2999 read_size += pkt->size;
3001 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3002 /* check for non-increasing dts */
3003 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3004 st->info->fps_last_dts >= pkt->dts) {
3005 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
3006 "packet %d with DTS %"PRId64", packet %d with DTS "
3007 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3008 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3009 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3011 /* check for a discontinuity in dts - if the difference in dts
3012 * is more than 1000 times the average packet duration in the sequence,
3013 * we treat it as a discontinuity */
3014 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3015 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3016 (pkt->dts - st->info->fps_last_dts) / 1000 >
3017 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3018 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
3019 "packet %d with DTS %"PRId64", packet %d with DTS "
3020 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3021 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3022 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3025 /* update stored dts values */
3026 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3027 st->info->fps_first_dts = pkt->dts;
3028 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3030 st->info->fps_last_dts = pkt->dts;
3031 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3033 if (st->codec_info_nb_frames>1) {
3035 if (st->time_base.den > 0)
3036 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3037 if (st->avg_frame_rate.num > 0)
3038 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3041 && st->codec_info_nb_frames>30
3042 && st->info->fps_first_dts != AV_NOPTS_VALUE
3043 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3044 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3046 if (t >= ic->max_analyze_duration) {
3047 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
3050 if (pkt->duration) {
3051 st->info->codec_info_duration += pkt->duration;
3052 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
3055 #if FF_API_R_FRAME_RATE
3056 ff_rfps_add_frame(ic, st, pkt->dts);
3058 if(st->parser && st->parser->parser->split && !st->codec->extradata){
3059 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
3060 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3061 if (ff_alloc_extradata(st->codec, i))
3062 return AVERROR(ENOMEM);
3063 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
3067 /* if still no information, we try to open the codec and to
3068 decompress the frame. We try to avoid that in most cases as
3069 it takes longer and uses more memory. For MPEG-4, we need to
3070 decompress for QuickTime.
3072 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3073 least one frame of codec data, this makes sure the codec initializes
3074 the channel configuration and does not only trust the values from the container.
3076 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
3078 st->codec_info_nb_frames++;
3083 AVPacket empty_pkt = { 0 };
3085 av_init_packet(&empty_pkt);
3087 for(i=0;i<ic->nb_streams;i++) {
3089 st = ic->streams[i];
3091 /* flush the decoders */
3092 if (st->info->found_decoder == 1) {
3094 err = try_decode_frame(ic, st, &empty_pkt,
3095 (options && i < orig_nb_streams) ?
3096 &options[i] : NULL);
3097 } while (err > 0 && !has_codec_parameters(st, NULL));
3100 av_log(ic, AV_LOG_INFO,
3101 "decoding for stream %d failed\n", st->index);
3107 // close codecs which were opened in try_decode_frame()
3108 for(i=0;i<ic->nb_streams;i++) {
3109 st = ic->streams[i];
3110 avcodec_close(st->codec);
3113 ff_rfps_calculate(ic);
3115 for(i=0;i<ic->nb_streams;i++) {
3116 st = ic->streams[i];
3117 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3118 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3119 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3120 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3121 st->codec->codec_tag= tag;
3124 /* estimate average framerate if not set by demuxer */
3125 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3127 double best_error = 0.01;
3129 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3130 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3131 st->info->codec_info_duration < 0)
3133 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3134 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3135 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3137 /* round guessed framerate to a "standard" framerate if it's
3138 * within 1% of the original estimate*/
3139 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3140 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3141 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3143 if (error < best_error) {
3145 best_fps = std_fps.num;
3149 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3150 best_fps, 12*1001, INT_MAX);
3154 if (!st->r_frame_rate.num){
3155 if( st->codec->time_base.den * (int64_t)st->time_base.num
3156 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3157 st->r_frame_rate.num = st->codec->time_base.den;
3158 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3160 st->r_frame_rate.num = st->time_base.den;
3161 st->r_frame_rate.den = st->time_base.num;
3164 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3165 if(!st->codec->bits_per_coded_sample)
3166 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3167 // set stream disposition based on audio service type
3168 switch (st->codec->audio_service_type) {
3169 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3170 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3171 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3172 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3173 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3174 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3175 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3176 st->disposition = AV_DISPOSITION_COMMENT; break;
3177 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3178 st->disposition = AV_DISPOSITION_KARAOKE; break;
3184 estimate_timings(ic, old_offset);
3186 if (ret >= 0 && ic->nb_streams)
3187 ret = -1; /* we could not have all the codec parameters before EOF */
3188 for(i=0;i<ic->nb_streams;i++) {
3190 st = ic->streams[i];
3191 if (!has_codec_parameters(st, &errmsg)) {
3193 avcodec_string(buf, sizeof(buf), st->codec, 0);
3194 av_log(ic, AV_LOG_WARNING,
3195 "Could not find codec parameters for stream %d (%s): %s\n"
3196 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3203 compute_chapters_end(ic);
3205 find_stream_info_err:
3206 for (i=0; i < ic->nb_streams; i++) {
3207 st = ic->streams[i];
3208 if (ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3209 ic->streams[i]->codec->thread_count = 0;
3211 av_freep(&st->info->duration_error);
3212 av_freep(&ic->streams[i]->info);
3215 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3216 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3220 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3224 for (i = 0; i < ic->nb_programs; i++) {
3225 if (ic->programs[i] == last) {
3229 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3230 if (ic->programs[i]->stream_index[j] == s)
3231 return ic->programs[i];
3237 int av_find_best_stream(AVFormatContext *ic,
3238 enum AVMediaType type,
3239 int wanted_stream_nb,
3241 AVCodec **decoder_ret,
3244 int i, nb_streams = ic->nb_streams;
3245 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3246 unsigned *program = NULL;
3247 AVCodec *decoder = NULL, *best_decoder = NULL;
3249 if (related_stream >= 0 && wanted_stream_nb < 0) {
3250 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3252 program = p->stream_index;
3253 nb_streams = p->nb_stream_indexes;
3256 for (i = 0; i < nb_streams; i++) {
3257 int real_stream_index = program ? program[i] : i;
3258 AVStream *st = ic->streams[real_stream_index];
3259 AVCodecContext *avctx = st->codec;
3260 if (avctx->codec_type != type)
3262 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3264 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3267 decoder = find_decoder(ic, st, st->codec->codec_id);
3270 ret = AVERROR_DECODER_NOT_FOUND;
3274 count = st->codec_info_nb_frames;
3275 bitrate = avctx->bit_rate;
3276 multiframe = FFMIN(5, count);
3277 if ((best_multiframe > multiframe) ||
3278 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3279 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3282 best_bitrate = bitrate;
3283 best_multiframe = multiframe;
3284 ret = real_stream_index;
3285 best_decoder = decoder;
3286 if (program && i == nb_streams - 1 && ret < 0) {
3288 nb_streams = ic->nb_streams;
3289 i = 0; /* no related stream found, try again with everything */
3293 *decoder_ret = best_decoder;
3297 /*******************************************************/
3299 int av_read_play(AVFormatContext *s)
3301 if (s->iformat->read_play)
3302 return s->iformat->read_play(s);
3304 return avio_pause(s->pb, 0);
3305 return AVERROR(ENOSYS);
3308 int av_read_pause(AVFormatContext *s)
3310 if (s->iformat->read_pause)
3311 return s->iformat->read_pause(s);
3313 return avio_pause(s->pb, 1);
3314 return AVERROR(ENOSYS);
3317 void ff_free_stream(AVFormatContext *s, AVStream *st){
3318 av_assert0(s->nb_streams>0);
3319 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3322 av_parser_close(st->parser);
3324 if (st->attached_pic.data)
3325 av_free_packet(&st->attached_pic);
3326 av_dict_free(&st->metadata);
3327 av_freep(&st->probe_data.buf);
3328 av_freep(&st->index_entries);
3329 av_freep(&st->codec->extradata);
3330 av_freep(&st->codec->subtitle_header);
3331 av_freep(&st->codec);
3332 av_freep(&st->priv_data);
3334 av_freep(&st->info->duration_error);
3335 av_freep(&st->info);
3336 av_freep(&s->streams[ --s->nb_streams ]);
3339 void avformat_free_context(AVFormatContext *s)
3347 if (s->iformat && s->iformat->priv_class && s->priv_data)
3348 av_opt_free(s->priv_data);
3350 for(i=s->nb_streams-1; i>=0; i--) {
3351 ff_free_stream(s, s->streams[i]);
3353 for(i=s->nb_programs-1; i>=0; i--) {
3354 av_dict_free(&s->programs[i]->metadata);
3355 av_freep(&s->programs[i]->stream_index);
3356 av_freep(&s->programs[i]);
3358 av_freep(&s->programs);
3359 av_freep(&s->priv_data);
3360 while(s->nb_chapters--) {
3361 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3362 av_freep(&s->chapters[s->nb_chapters]);
3364 av_freep(&s->chapters);
3365 av_dict_free(&s->metadata);
3366 av_freep(&s->streams);
3370 #if FF_API_CLOSE_INPUT_FILE
3371 void av_close_input_file(AVFormatContext *s)
3373 avformat_close_input(&s);
3377 void avformat_close_input(AVFormatContext **ps)
3388 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3389 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3392 flush_packet_queue(s);
3395 if (s->iformat->read_close)
3396 s->iformat->read_close(s);
3399 avformat_free_context(s);
3406 #if FF_API_NEW_STREAM
3407 AVStream *av_new_stream(AVFormatContext *s, int id)
3409 AVStream *st = avformat_new_stream(s, NULL);
3416 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3422 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3424 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3427 s->streams = streams;
3429 st = av_mallocz(sizeof(AVStream));
3432 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3436 st->info->last_dts = AV_NOPTS_VALUE;
3438 st->codec = avcodec_alloc_context3(c);
3440 /* no default bitrate if decoding */
3441 st->codec->bit_rate = 0;
3443 st->index = s->nb_streams;
3444 st->start_time = AV_NOPTS_VALUE;
3445 st->duration = AV_NOPTS_VALUE;
3446 /* we set the current DTS to 0 so that formats without any timestamps
3447 but durations get some timestamps, formats with some unknown
3448 timestamps have their first few packets buffered and the
3449 timestamps corrected before they are returned to the user */
3450 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3451 st->first_dts = AV_NOPTS_VALUE;
3452 st->probe_packets = MAX_PROBE_PACKETS;
3453 st->pts_wrap_reference = AV_NOPTS_VALUE;
3454 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3456 /* default pts setting is MPEG-like */
3457 avpriv_set_pts_info(st, 33, 1, 90000);
3458 st->last_IP_pts = AV_NOPTS_VALUE;
3459 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3460 st->pts_buffer[i]= AV_NOPTS_VALUE;
3462 st->sample_aspect_ratio = (AVRational){0,1};
3464 #if FF_API_R_FRAME_RATE
3465 st->info->last_dts = AV_NOPTS_VALUE;
3467 st->info->fps_first_dts = AV_NOPTS_VALUE;
3468 st->info->fps_last_dts = AV_NOPTS_VALUE;
3470 s->streams[s->nb_streams++] = st;
3474 AVProgram *av_new_program(AVFormatContext *ac, int id)
3476 AVProgram *program=NULL;
3479 av_dlog(ac, "new_program: id=0x%04x\n", id);
3481 for(i=0; i<ac->nb_programs; i++)
3482 if(ac->programs[i]->id == id)
3483 program = ac->programs[i];
3486 program = av_mallocz(sizeof(AVProgram));
3489 dynarray_add(&ac->programs, &ac->nb_programs, program);
3490 program->discard = AVDISCARD_NONE;
3493 program->pts_wrap_reference = AV_NOPTS_VALUE;
3494 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3496 program->start_time =
3497 program->end_time = AV_NOPTS_VALUE;
3502 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3504 AVChapter *chapter = NULL;
3507 for(i=0; i<s->nb_chapters; i++)
3508 if(s->chapters[i]->id == id)
3509 chapter = s->chapters[i];
3512 chapter= av_mallocz(sizeof(AVChapter));
3515 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3517 av_dict_set(&chapter->metadata, "title", title, 0);
3519 chapter->time_base= time_base;
3520 chapter->start = start;
3526 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3529 AVProgram *program=NULL;
3532 if (idx >= ac->nb_streams) {
3533 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3537 for(i=0; i<ac->nb_programs; i++){
3538 if(ac->programs[i]->id != progid)
3540 program = ac->programs[i];
3541 for(j=0; j<program->nb_stream_indexes; j++)
3542 if(program->stream_index[j] == idx)
3545 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3548 program->stream_index = tmp;
3549 program->stream_index[program->nb_stream_indexes++] = idx;
3554 static void print_fps(double d, const char *postfix){
3555 uint64_t v= lrintf(d*100);
3556 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3557 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3558 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3561 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3563 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3564 AVDictionaryEntry *tag=NULL;
3566 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3567 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3568 if(strcmp("language", tag->key)){
3569 const char *p = tag->value;
3570 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3573 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3574 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3575 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3577 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3578 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3581 av_log(ctx, AV_LOG_INFO, "\n");
3587 /* "user interface" functions */
3588 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3591 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3592 AVStream *st = ic->streams[i];
3593 int g = av_gcd(st->time_base.num, st->time_base.den);
3594 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3595 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3596 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3597 /* the pid is an important information, so we display it */
3598 /* XXX: add a generic system */
3599 if (flags & AVFMT_SHOW_IDS)
3600 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3602 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3603 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3604 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3605 if (st->sample_aspect_ratio.num && // default
3606 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3607 AVRational display_aspect_ratio;
3608 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3609 st->codec->width*st->sample_aspect_ratio.num,
3610 st->codec->height*st->sample_aspect_ratio.den,
3612 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3613 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3614 display_aspect_ratio.num, display_aspect_ratio.den);
3616 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3617 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3618 print_fps(av_q2d(st->avg_frame_rate), "fps");
3619 #if FF_API_R_FRAME_RATE
3620 if(st->r_frame_rate.den && st->r_frame_rate.num)
3621 print_fps(av_q2d(st->r_frame_rate), "tbr");
3623 if(st->time_base.den && st->time_base.num)
3624 print_fps(1/av_q2d(st->time_base), "tbn");
3625 if(st->codec->time_base.den && st->codec->time_base.num)
3626 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3628 if (st->disposition & AV_DISPOSITION_DEFAULT)
3629 av_log(NULL, AV_LOG_INFO, " (default)");
3630 if (st->disposition & AV_DISPOSITION_DUB)
3631 av_log(NULL, AV_LOG_INFO, " (dub)");
3632 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3633 av_log(NULL, AV_LOG_INFO, " (original)");
3634 if (st->disposition & AV_DISPOSITION_COMMENT)
3635 av_log(NULL, AV_LOG_INFO, " (comment)");
3636 if (st->disposition & AV_DISPOSITION_LYRICS)
3637 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3638 if (st->disposition & AV_DISPOSITION_KARAOKE)
3639 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3640 if (st->disposition & AV_DISPOSITION_FORCED)
3641 av_log(NULL, AV_LOG_INFO, " (forced)");
3642 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3643 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3644 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3645 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3646 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3647 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3648 av_log(NULL, AV_LOG_INFO, "\n");
3649 dump_metadata(NULL, st->metadata, " ");
3652 void av_dump_format(AVFormatContext *ic,
3658 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3659 if (ic->nb_streams && !printed)
3662 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3663 is_output ? "Output" : "Input",
3665 is_output ? ic->oformat->name : ic->iformat->name,
3666 is_output ? "to" : "from", url);
3667 dump_metadata(NULL, ic->metadata, " ");
3669 av_log(NULL, AV_LOG_INFO, " Duration: ");
3670 if (ic->duration != AV_NOPTS_VALUE) {
3671 int hours, mins, secs, us;
3672 int64_t duration = ic->duration + 5000;
3673 secs = duration / AV_TIME_BASE;
3674 us = duration % AV_TIME_BASE;
3679 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3680 (100 * us) / AV_TIME_BASE);
3682 av_log(NULL, AV_LOG_INFO, "N/A");
3684 if (ic->start_time != AV_NOPTS_VALUE) {
3686 av_log(NULL, AV_LOG_INFO, ", start: ");
3687 secs = ic->start_time / AV_TIME_BASE;
3688 us = abs(ic->start_time % AV_TIME_BASE);
3689 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3690 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3692 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3694 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3696 av_log(NULL, AV_LOG_INFO, "N/A");
3698 av_log(NULL, AV_LOG_INFO, "\n");
3700 for (i = 0; i < ic->nb_chapters; i++) {
3701 AVChapter *ch = ic->chapters[i];
3702 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3703 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3704 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3706 dump_metadata(NULL, ch->metadata, " ");
3708 if(ic->nb_programs) {
3709 int j, k, total = 0;
3710 for(j=0; j<ic->nb_programs; j++) {
3711 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3713 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3714 name ? name->value : "");
3715 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3716 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3717 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3718 printed[ic->programs[j]->stream_index[k]] = 1;
3720 total += ic->programs[j]->nb_stream_indexes;
3722 if (total < ic->nb_streams)
3723 av_log(NULL, AV_LOG_INFO, " No Program\n");
3725 for(i=0;i<ic->nb_streams;i++)
3727 dump_stream_format(ic, i, index, is_output);
3732 uint64_t ff_ntp_time(void)
3734 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3737 int av_get_frame_filename(char *buf, int buf_size,
3738 const char *path, int number)
3741 char *q, buf1[20], c;
3742 int nd, len, percentd_found;
3754 while (av_isdigit(*p)) {
3755 nd = nd * 10 + *p++ - '0';
3758 } while (av_isdigit(c));
3767 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3769 if ((q - buf + len) > buf_size - 1)
3771 memcpy(q, buf1, len);
3779 if ((q - buf) < buf_size - 1)
3783 if (!percentd_found)
3792 static void hex_dump_internal(void *avcl, FILE *f, int level,
3793 const uint8_t *buf, int size)
3796 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3798 for(i=0;i<size;i+=16) {
3805 PRINT(" %02x", buf[i+j]);
3810 for(j=0;j<len;j++) {
3812 if (c < ' ' || c > '~')
3821 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3823 hex_dump_internal(NULL, f, 0, buf, size);
3826 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3828 hex_dump_internal(avcl, NULL, level, buf, size);
3831 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3833 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3834 PRINT("stream #%d:\n", pkt->stream_index);
3835 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3836 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3837 /* DTS is _always_ valid after av_read_frame() */
3839 if (pkt->dts == AV_NOPTS_VALUE)
3842 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3843 /* PTS may not be known if B-frames are present. */
3845 if (pkt->pts == AV_NOPTS_VALUE)
3848 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3850 PRINT(" size=%d\n", pkt->size);
3853 av_hex_dump(f, pkt->data, pkt->size);
3856 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3858 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3861 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3864 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3867 void av_url_split(char *proto, int proto_size,
3868 char *authorization, int authorization_size,
3869 char *hostname, int hostname_size,
3871 char *path, int path_size,
3874 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3876 if (port_ptr) *port_ptr = -1;
3877 if (proto_size > 0) proto[0] = 0;
3878 if (authorization_size > 0) authorization[0] = 0;
3879 if (hostname_size > 0) hostname[0] = 0;
3880 if (path_size > 0) path[0] = 0;
3882 /* parse protocol */
3883 if ((p = strchr(url, ':'))) {
3884 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3889 /* no protocol means plain filename */
3890 av_strlcpy(path, url, path_size);
3894 /* separate path from hostname */
3895 ls = strchr(p, '/');
3896 ls2 = strchr(p, '?');
3900 ls = FFMIN(ls, ls2);
3902 av_strlcpy(path, ls, path_size);
3904 ls = &p[strlen(p)]; // XXX
3906 /* the rest is hostname, use that to parse auth/port */
3908 /* authorization (user[:pass]@hostname) */
3910 while ((at = strchr(p, '@')) && at < ls) {
3911 av_strlcpy(authorization, at2,
3912 FFMIN(authorization_size, at + 1 - at2));
3913 p = at + 1; /* skip '@' */
3916 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3918 av_strlcpy(hostname, p + 1,
3919 FFMIN(hostname_size, brk - p));
3920 if (brk[1] == ':' && port_ptr)
3921 *port_ptr = atoi(brk + 2);
3922 } else if ((col = strchr(p, ':')) && col < ls) {
3923 av_strlcpy(hostname, p,
3924 FFMIN(col + 1 - p, hostname_size));
3925 if (port_ptr) *port_ptr = atoi(col + 1);
3927 av_strlcpy(hostname, p,
3928 FFMIN(ls + 1 - p, hostname_size));
3932 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3935 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3938 'C', 'D', 'E', 'F' };
3939 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3942 'c', 'd', 'e', 'f' };
3943 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3945 for(i = 0; i < s; i++) {
3946 buff[i * 2] = hex_table[src[i] >> 4];
3947 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3953 int ff_hex_to_data(uint8_t *data, const char *p)
3960 p += strspn(p, SPACE_CHARS);
3963 c = av_toupper((unsigned char) *p++);
3964 if (c >= '0' && c <= '9')
3966 else if (c >= 'A' && c <= 'F')
3981 #if FF_API_SET_PTS_INFO
3982 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3983 unsigned int pts_num, unsigned int pts_den)
3985 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3989 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3990 unsigned int pts_num, unsigned int pts_den)
3993 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3994 if(new_tb.num != pts_num)
3995 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3997 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3999 if(new_tb.num <= 0 || new_tb.den <= 0) {
4000 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);
4003 s->time_base = new_tb;
4004 av_codec_set_pkt_timebase(s->codec, new_tb);
4005 s->pts_wrap_bits = pts_wrap_bits;
4008 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4011 const char *ptr = str;
4013 /* Parse key=value pairs. */
4016 char *dest = NULL, *dest_end;
4017 int key_len, dest_len = 0;
4019 /* Skip whitespace and potential commas. */
4020 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4027 if (!(ptr = strchr(key, '=')))
4030 key_len = ptr - key;
4032 callback_get_buf(context, key, key_len, &dest, &dest_len);
4033 dest_end = dest + dest_len - 1;
4037 while (*ptr && *ptr != '\"') {
4041 if (dest && dest < dest_end)
4045 if (dest && dest < dest_end)
4053 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4054 if (dest && dest < dest_end)
4062 int ff_find_stream_index(AVFormatContext *s, int id)
4065 for (i = 0; i < s->nb_streams; i++) {
4066 if (s->streams[i]->id == id)
4072 int64_t ff_iso8601_to_unix_time(const char *datestr)
4074 struct tm time1 = {0}, time2 = {0};
4076 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4077 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4079 return av_timegm(&time2);
4081 return av_timegm(&time1);
4084 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4087 if (ofmt->query_codec)
4088 return ofmt->query_codec(codec_id, std_compliance);
4089 else if (ofmt->codec_tag)
4090 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4091 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4092 codec_id == ofmt->subtitle_codec)
4095 return AVERROR_PATCHWELCOME;
4098 int avformat_network_init(void)
4102 ff_network_inited_globally = 1;
4103 if ((ret = ff_network_init()) < 0)
4110 int avformat_network_deinit(void)
4119 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4120 uint64_t channel_layout, int32_t sample_rate,
4121 int32_t width, int32_t height)
4127 return AVERROR(EINVAL);
4130 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4132 if (channel_layout) {
4134 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4138 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4140 if (width || height) {
4142 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4144 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4146 return AVERROR(ENOMEM);
4147 bytestream_put_le32(&data, flags);
4149 bytestream_put_le32(&data, channels);
4151 bytestream_put_le64(&data, channel_layout);
4153 bytestream_put_le32(&data, sample_rate);
4154 if (width || height) {
4155 bytestream_put_le32(&data, width);
4156 bytestream_put_le32(&data, height);
4161 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4163 AVRational undef = {0, 1};
4164 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4165 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4166 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4168 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4169 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4170 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4171 stream_sample_aspect_ratio = undef;
4173 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4174 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4175 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4176 frame_sample_aspect_ratio = undef;
4178 if (stream_sample_aspect_ratio.num)
4179 return stream_sample_aspect_ratio;
4181 return frame_sample_aspect_ratio;
4184 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4186 AVRational fr = st->r_frame_rate;
4188 if (st->codec->ticks_per_frame > 1) {
4189 AVRational codec_fr = av_inv_q(st->codec->time_base);
4190 AVRational avg_fr = st->avg_frame_rate;
4191 codec_fr.den *= st->codec->ticks_per_frame;
4192 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4193 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4200 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4203 if (*spec <= '9' && *spec >= '0') /* opt:index */
4204 return strtol(spec, NULL, 0) == st->index;
4205 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4206 *spec == 't') { /* opt:[vasdt] */
4207 enum AVMediaType type;
4210 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4211 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4212 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4213 case 'd': type = AVMEDIA_TYPE_DATA; break;
4214 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4215 default: av_assert0(0);
4217 if (type != st->codec->codec_type)
4219 if (*spec++ == ':') { /* possibly followed by :index */
4220 int i, index = strtol(spec, NULL, 0);
4221 for (i = 0; i < s->nb_streams; i++)
4222 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4223 return i == st->index;
4227 } else if (*spec == 'p' && *(spec + 1) == ':') {
4231 prog_id = strtol(spec, &endptr, 0);
4232 for (i = 0; i < s->nb_programs; i++) {
4233 if (s->programs[i]->id != prog_id)
4236 if (*endptr++ == ':') {
4237 int stream_idx = strtol(endptr, NULL, 0);
4238 return stream_idx >= 0 &&
4239 stream_idx < s->programs[i]->nb_stream_indexes &&
4240 st->index == s->programs[i]->stream_index[stream_idx];
4243 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4244 if (st->index == s->programs[i]->stream_index[j])
4248 } else if (*spec == '#') {
4251 sid = strtol(spec + 1, &endptr, 0);
4253 return st->id == sid;
4254 } else if (!*spec) /* empty specifier, matches everything */
4257 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4258 return AVERROR(EINVAL);
4261 int ff_generate_avci_extradata(AVStream *st)
4263 static const uint8_t avci100_1080p_extradata[] = {
4265 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4266 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4267 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4268 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4269 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4270 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4271 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4272 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4273 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4275 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4278 static const uint8_t avci100_1080i_extradata[] = {
4280 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4281 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4282 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4283 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4284 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4285 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4286 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4287 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4288 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4289 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4290 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4292 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4295 static const uint8_t avci50_1080i_extradata[] = {
4297 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4298 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4299 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4300 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4301 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4302 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4303 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4304 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4305 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4306 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4307 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4309 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4312 static const uint8_t avci100_720p_extradata[] = {
4314 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4315 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4316 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4317 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4318 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4319 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4320 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4321 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4322 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4323 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4325 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4329 const uint8_t *data = NULL;
4332 if (st->codec->width == 1920) {
4333 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4334 data = avci100_1080p_extradata;
4335 size = sizeof(avci100_1080p_extradata);
4337 data = avci100_1080i_extradata;
4338 size = sizeof(avci100_1080i_extradata);
4340 } else if (st->codec->width == 1440) {
4341 data = avci50_1080i_extradata;
4342 size = sizeof(avci50_1080i_extradata);
4343 } else if (st->codec->width == 1280) {
4344 data = avci100_720p_extradata;
4345 size = sizeof(avci100_720p_extradata);
4351 av_freep(&st->codec->extradata);
4352 if (ff_alloc_extradata(st->codec, size))
4353 return AVERROR(ENOMEM);
4354 memcpy(st->codec->extradata, data, size);