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 : "", NULL, -offset };
346 unsigned char *buf = NULL;
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))) {
375 if (probe_size < offset) {
378 score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
380 /* read probe data */
381 if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0)
383 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
384 /* fail if error was not end of file, otherwise, lower score */
385 if (ret != AVERROR_EOF) {
390 ret = 0; /* error was end of file, nothing read */
392 pd.buf_size = buf_offset += ret;
393 pd.buf = &buf[offset];
395 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
397 /* guess file format */
398 *fmt = av_probe_input_format2(&pd, 1, &score);
400 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
401 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
403 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
405 FILE *f = fopen("probestat.tmp", "ab");
406 fprintf(f, "probe_size:%d format:%s score:%d filename:%s\n", probe_size, (*fmt)->name, score, filename);
414 return AVERROR_INVALIDDATA;
417 /* rewind. reuse probe buffer to avoid seeking */
418 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
420 return ret < 0 ? ret : score;
423 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
424 const char *filename, void *logctx,
425 unsigned int offset, unsigned int max_probe_size)
427 int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size);
428 return ret < 0 ? ret : 0;
432 /* open input file and probe the format if necessary */
433 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
436 AVProbeData pd = {filename, NULL, 0};
437 int score = AVPROBE_SCORE_RETRY;
440 s->flags |= AVFMT_FLAG_CUSTOM_IO;
442 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
443 else if (s->iformat->flags & AVFMT_NOFILE)
444 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
445 "will be ignored with AVFMT_NOFILE format.\n");
449 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
450 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
453 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
454 &s->interrupt_callback, options)) < 0)
458 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
461 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
462 AVPacketList **plast_pktl){
463 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
468 (*plast_pktl)->next = pktl;
470 *packet_buffer = pktl;
472 /* add the packet in the buffered packet list */
478 int avformat_queue_attached_pictures(AVFormatContext *s)
481 for (i = 0; i < s->nb_streams; i++)
482 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
483 s->streams[i]->discard < AVDISCARD_ALL) {
484 AVPacket copy = s->streams[i]->attached_pic;
485 copy.buf = av_buffer_ref(copy.buf);
487 return AVERROR(ENOMEM);
489 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
494 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
496 AVFormatContext *s = *ps;
498 AVDictionary *tmp = NULL;
499 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
501 if (!s && !(s = avformat_alloc_context()))
502 return AVERROR(ENOMEM);
504 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
505 return AVERROR(EINVAL);
511 av_dict_copy(&tmp, *options, 0);
513 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
516 if ((ret = init_input(s, filename, &tmp)) < 0)
518 s->probe_score = ret;
519 avio_skip(s->pb, s->skip_initial_bytes);
521 /* check filename in case an image number is expected */
522 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
523 if (!av_filename_number_test(filename)) {
524 ret = AVERROR(EINVAL);
529 s->duration = s->start_time = AV_NOPTS_VALUE;
530 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
532 /* allocate private data */
533 if (s->iformat->priv_data_size > 0) {
534 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
535 ret = AVERROR(ENOMEM);
538 if (s->iformat->priv_class) {
539 *(const AVClass**)s->priv_data = s->iformat->priv_class;
540 av_opt_set_defaults(s->priv_data);
541 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
546 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
548 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
550 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
551 if ((ret = s->iformat->read_header(s)) < 0)
554 if (id3v2_extra_meta) {
555 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
556 !strcmp(s->iformat->name, "tta")) {
557 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
560 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
562 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
564 if ((ret = avformat_queue_attached_pictures(s)) < 0)
567 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
568 s->data_offset = avio_tell(s->pb);
570 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
573 av_dict_free(options);
580 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
582 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
584 avformat_free_context(s);
589 /*******************************************************/
591 static void force_codec_ids(AVFormatContext *s, AVStream *st)
593 switch(st->codec->codec_type){
594 case AVMEDIA_TYPE_VIDEO:
595 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
597 case AVMEDIA_TYPE_AUDIO:
598 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
600 case AVMEDIA_TYPE_SUBTITLE:
601 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
606 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
608 if(st->request_probe>0){
609 AVProbeData *pd = &st->probe_data;
611 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
615 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
617 av_log(s, AV_LOG_WARNING,
618 "Failed to reallocate probe buffer for stream %d\n",
623 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
624 pd->buf_size += pkt->size;
625 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
628 st->probe_packets = 0;
630 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
635 end= s->raw_packet_buffer_remaining_size <= 0
636 || st->probe_packets<=0;
638 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
639 int score= set_codec_from_probe_data(s, st, pd);
640 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
644 st->request_probe= -1;
645 if(st->codec->codec_id != AV_CODEC_ID_NONE){
646 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
648 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
650 force_codec_ids(s, st);
656 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
658 int64_t ref = pkt->dts;
659 int i, pts_wrap_behavior;
660 int64_t pts_wrap_reference;
661 AVProgram *first_program;
663 if (ref == AV_NOPTS_VALUE)
665 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
667 ref &= (1LL<<st->pts_wrap_bits)-1;
669 // reference time stamp should be 60 s before first time stamp
670 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
671 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
672 pts_wrap_behavior = (ref < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
673 (ref < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
674 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
676 first_program = av_find_program_from_stream(s, NULL, stream_index);
678 if (!first_program) {
679 int default_stream_index = av_find_default_stream_index(s);
680 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
681 for (i=0; i<s->nb_streams; i++) {
682 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
683 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
687 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
688 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
692 AVProgram *program = first_program;
694 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
695 pts_wrap_reference = program->pts_wrap_reference;
696 pts_wrap_behavior = program->pts_wrap_behavior;
699 program = av_find_program_from_stream(s, program, stream_index);
702 // update every program with differing pts_wrap_reference
703 program = first_program;
705 if (program->pts_wrap_reference != pts_wrap_reference) {
706 for (i=0; i<program->nb_stream_indexes; i++) {
707 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
708 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
711 program->pts_wrap_reference = pts_wrap_reference;
712 program->pts_wrap_behavior = pts_wrap_behavior;
714 program = av_find_program_from_stream(s, program, stream_index);
720 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
726 AVPacketList *pktl = s->raw_packet_buffer;
730 st = s->streams[pkt->stream_index];
731 if (s->raw_packet_buffer_remaining_size <= 0) {
732 if ((err = probe_codec(s, st, NULL)) < 0)
735 if(st->request_probe <= 0){
736 s->raw_packet_buffer = pktl->next;
737 s->raw_packet_buffer_remaining_size += pkt->size;
746 ret= s->iformat->read_packet(s, pkt);
748 if (!pktl || ret == AVERROR(EAGAIN))
750 for (i = 0; i < s->nb_streams; i++) {
752 if (st->probe_packets) {
753 if ((err = probe_codec(s, st, NULL)) < 0)
756 av_assert0(st->request_probe <= 0);
761 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
762 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
763 av_log(s, AV_LOG_WARNING,
764 "Dropped corrupted packet (stream = %d)\n",
770 if(pkt->stream_index >= (unsigned)s->nb_streams){
771 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
775 st= s->streams[pkt->stream_index];
777 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
778 // correct first time stamps to negative values
779 if (!is_relative(st->first_dts))
780 st->first_dts = wrap_timestamp(st, st->first_dts);
781 if (!is_relative(st->start_time))
782 st->start_time = wrap_timestamp(st, st->start_time);
783 if (!is_relative(st->cur_dts))
784 st->cur_dts = wrap_timestamp(st, st->cur_dts);
787 pkt->dts = wrap_timestamp(st, pkt->dts);
788 pkt->pts = wrap_timestamp(st, pkt->pts);
790 force_codec_ids(s, st);
792 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
793 if (s->use_wallclock_as_timestamps)
794 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
796 if(!pktl && st->request_probe <= 0)
799 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
800 s->raw_packet_buffer_remaining_size -= pkt->size;
802 if ((err = probe_codec(s, st, pkt)) < 0)
807 #if FF_API_READ_PACKET
808 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
810 return ff_read_packet(s, pkt);
815 /**********************************************************/
817 static int determinable_frame_size(AVCodecContext *avctx)
819 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
820 avctx->codec_id == AV_CODEC_ID_MP1 ||
821 avctx->codec_id == AV_CODEC_ID_MP2 ||
822 avctx->codec_id == AV_CODEC_ID_MP3/* ||
823 avctx->codec_id == AV_CODEC_ID_CELT*/)
829 * Get the number of samples of an audio frame. Return -1 on error.
831 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
835 /* give frame_size priority if demuxing */
836 if (!mux && enc->frame_size > 1)
837 return enc->frame_size;
839 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
842 /* Fall back on using frame_size if muxing. */
843 if (enc->frame_size > 1)
844 return enc->frame_size;
846 //For WMA we currently have no other means to calculate duration thus we
847 //do it here by assuming CBR, which is true for all known cases.
848 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
849 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
850 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
858 * Return the frame duration in seconds. Return 0 if not available.
860 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
861 AVCodecParserContext *pc, AVPacket *pkt)
867 switch(st->codec->codec_type) {
868 case AVMEDIA_TYPE_VIDEO:
869 if (st->r_frame_rate.num && !pc) {
870 *pnum = st->r_frame_rate.den;
871 *pden = st->r_frame_rate.num;
872 } else if(st->time_base.num*1000LL > st->time_base.den) {
873 *pnum = st->time_base.num;
874 *pden = st->time_base.den;
875 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
876 *pnum = st->codec->time_base.num;
877 *pden = st->codec->time_base.den;
878 if (pc && pc->repeat_pict) {
879 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
880 *pden /= 1 + pc->repeat_pict;
882 *pnum *= 1 + pc->repeat_pict;
884 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
885 //Thus if we have no parser in such case leave duration undefined.
886 if(st->codec->ticks_per_frame>1 && !pc){
891 case AVMEDIA_TYPE_AUDIO:
892 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
893 if (frame_size <= 0 || st->codec->sample_rate <= 0)
896 *pden = st->codec->sample_rate;
903 static int is_intra_only(AVCodecContext *enc){
904 const AVCodecDescriptor *desc;
906 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
909 desc = av_codec_get_codec_descriptor(enc);
911 desc = avcodec_descriptor_get(enc->codec_id);
912 av_codec_set_codec_descriptor(enc, desc);
915 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
919 static int has_decode_delay_been_guessed(AVStream *st)
921 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
922 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
924 #if CONFIG_H264_DECODER
925 if(st->codec->has_b_frames &&
926 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
929 if(st->codec->has_b_frames<3)
930 return st->nb_decoded_frames >= 7;
931 else if(st->codec->has_b_frames<4)
932 return st->nb_decoded_frames >= 18;
934 return st->nb_decoded_frames >= 20;
937 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
941 if (pktl == s->packet_buffer_end)
942 return s->parse_queue;
946 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
947 int64_t dts, int64_t pts, AVPacket *pkt)
949 AVStream *st= s->streams[stream_index];
950 AVPacketList *pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
951 int64_t pts_buffer[MAX_REORDER_DELAY+1];
955 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
958 delay = st->codec->has_b_frames;
959 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
961 shift = st->first_dts - RELATIVE_TS_BASE;
963 for (i=0; i<MAX_REORDER_DELAY+1; i++)
964 pts_buffer[i] = AV_NOPTS_VALUE;
966 if (is_relative(pts))
969 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
970 if(pktl->pkt.stream_index != stream_index)
972 if(is_relative(pktl->pkt.pts))
973 pktl->pkt.pts += shift;
975 if(is_relative(pktl->pkt.dts))
976 pktl->pkt.dts += shift;
978 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
979 st->start_time= pktl->pkt.pts;
981 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
982 pts_buffer[0]= pktl->pkt.pts;
983 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
984 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
985 if(pktl->pkt.dts == AV_NOPTS_VALUE)
986 pktl->pkt.dts= pts_buffer[0];
990 if (st->start_time == AV_NOPTS_VALUE)
991 st->start_time = pts;
994 static void update_initial_durations(AVFormatContext *s, AVStream *st,
995 int stream_index, int duration)
997 AVPacketList *pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
998 int64_t cur_dts= RELATIVE_TS_BASE;
1000 if(st->first_dts != AV_NOPTS_VALUE){
1001 if (st->update_initial_durations_done)
1003 st->update_initial_durations_done = 1;
1004 cur_dts= st->first_dts;
1005 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1006 if(pktl->pkt.stream_index == stream_index){
1007 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1009 cur_dts -= duration;
1012 if(pktl && pktl->pkt.dts != st->first_dts) {
1013 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
1014 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1018 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1021 pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
1022 st->first_dts = cur_dts;
1023 }else if(st->cur_dts != RELATIVE_TS_BASE)
1026 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1027 if(pktl->pkt.stream_index != stream_index)
1029 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1030 && !pktl->pkt.duration){
1031 pktl->pkt.dts= cur_dts;
1032 if(!st->codec->has_b_frames)
1033 pktl->pkt.pts= cur_dts;
1034 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1035 pktl->pkt.duration = duration;
1038 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1041 st->cur_dts= cur_dts;
1044 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1045 AVCodecParserContext *pc, AVPacket *pkt)
1047 int num, den, presentation_delayed, delay, i;
1049 AVRational duration;
1051 if (s->flags & AVFMT_FLAG_NOFILLIN)
1054 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1055 pkt->dts= AV_NOPTS_VALUE;
1057 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1058 && !st->codec->has_b_frames)
1059 //FIXME Set low_delay = 0 when has_b_frames = 1
1060 st->codec->has_b_frames = 1;
1062 /* do we have a video B-frame ? */
1063 delay= st->codec->has_b_frames;
1064 presentation_delayed = 0;
1066 /* XXX: need has_b_frame, but cannot get it if the codec is
1069 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1070 presentation_delayed = 1;
1072 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1073 st->pts_wrap_bits < 63 &&
1074 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1075 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1076 pkt->dts -= 1LL<<st->pts_wrap_bits;
1078 pkt->pts += 1LL<<st->pts_wrap_bits;
1081 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1082 // we take the conservative approach and discard both
1083 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1084 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1085 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1086 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1087 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1088 pkt->dts= AV_NOPTS_VALUE;
1091 duration = av_mul_q((AVRational){pkt->duration, 1}, st->time_base);
1092 if (pkt->duration == 0) {
1093 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1095 duration = (AVRational){num, den};
1096 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1100 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1101 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1103 /* correct timestamps with byte offset if demuxers only have timestamps
1104 on packet boundaries */
1105 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1106 /* this will estimate bitrate based on this frame's duration and size */
1107 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1108 if(pkt->pts != AV_NOPTS_VALUE)
1110 if(pkt->dts != AV_NOPTS_VALUE)
1114 /* This may be redundant, but it should not hurt. */
1115 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1116 presentation_delayed = 1;
1118 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1119 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1120 /* interpolate PTS and DTS if they are not present */
1121 //We skip H264 currently because delay and has_b_frames are not reliably set
1122 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1123 if (presentation_delayed) {
1124 /* DTS = decompression timestamp */
1125 /* PTS = presentation timestamp */
1126 if (pkt->dts == AV_NOPTS_VALUE)
1127 pkt->dts = st->last_IP_pts;
1128 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1129 if (pkt->dts == AV_NOPTS_VALUE)
1130 pkt->dts = st->cur_dts;
1132 /* this is tricky: the dts must be incremented by the duration
1133 of the frame we are displaying, i.e. the last I- or P-frame */
1134 if (st->last_IP_duration == 0)
1135 st->last_IP_duration = pkt->duration;
1136 if(pkt->dts != AV_NOPTS_VALUE)
1137 st->cur_dts = pkt->dts + st->last_IP_duration;
1138 st->last_IP_duration = pkt->duration;
1139 st->last_IP_pts= pkt->pts;
1140 /* cannot compute PTS if not present (we can compute it only
1141 by knowing the future */
1142 } else if (pkt->pts != AV_NOPTS_VALUE ||
1143 pkt->dts != AV_NOPTS_VALUE ||
1146 /* presentation is not delayed : PTS and DTS are the same */
1147 if (pkt->pts == AV_NOPTS_VALUE)
1148 pkt->pts = pkt->dts;
1149 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1151 if (pkt->pts == AV_NOPTS_VALUE)
1152 pkt->pts = st->cur_dts;
1153 pkt->dts = pkt->pts;
1154 if (pkt->pts != AV_NOPTS_VALUE)
1155 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1159 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1160 st->pts_buffer[0]= pkt->pts;
1161 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1162 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1163 if(pkt->dts == AV_NOPTS_VALUE)
1164 pkt->dts= st->pts_buffer[0];
1166 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1167 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1169 if(pkt->dts > st->cur_dts)
1170 st->cur_dts = pkt->dts;
1172 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1173 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1176 if (is_intra_only(st->codec))
1177 pkt->flags |= AV_PKT_FLAG_KEY;
1179 pkt->convergence_duration = pc->convergence_duration;
1182 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1185 AVPacketList *pktl = *pkt_buf;
1186 *pkt_buf = pktl->next;
1187 av_free_packet(&pktl->pkt);
1190 *pkt_buf_end = NULL;
1194 * Parse a packet, add all split parts to parse_queue
1196 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1198 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1200 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1201 AVStream *st = s->streams[stream_index];
1202 uint8_t *data = pkt ? pkt->data : NULL;
1203 int size = pkt ? pkt->size : 0;
1204 int ret = 0, got_output = 0;
1207 av_init_packet(&flush_pkt);
1210 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1211 // preserve 0-size sync packets
1212 compute_pkt_fields(s, st, st->parser, pkt);
1215 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1218 av_init_packet(&out_pkt);
1219 len = av_parser_parse2(st->parser, st->codec,
1220 &out_pkt.data, &out_pkt.size, data, size,
1221 pkt->pts, pkt->dts, pkt->pos);
1223 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1225 /* increment read pointer */
1229 got_output = !!out_pkt.size;
1234 if (pkt->side_data) {
1235 out_pkt.side_data = pkt->side_data;
1236 out_pkt.side_data_elems = pkt->side_data_elems;
1237 pkt->side_data = NULL;
1238 pkt->side_data_elems = 0;
1241 /* set the duration */
1242 out_pkt.duration = 0;
1243 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1244 if (st->codec->sample_rate > 0) {
1245 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1246 (AVRational){ 1, st->codec->sample_rate },
1250 } else if (st->codec->time_base.num != 0 &&
1251 st->codec->time_base.den != 0) {
1252 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1253 st->codec->time_base,
1258 out_pkt.stream_index = st->index;
1259 out_pkt.pts = st->parser->pts;
1260 out_pkt.dts = st->parser->dts;
1261 out_pkt.pos = st->parser->pos;
1263 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1264 out_pkt.pos = st->parser->frame_offset;
1266 if (st->parser->key_frame == 1 ||
1267 (st->parser->key_frame == -1 &&
1268 st->parser->pict_type == AV_PICTURE_TYPE_I))
1269 out_pkt.flags |= AV_PKT_FLAG_KEY;
1271 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1272 out_pkt.flags |= AV_PKT_FLAG_KEY;
1274 compute_pkt_fields(s, st, st->parser, &out_pkt);
1276 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1277 out_pkt.buf = pkt->buf;
1279 #if FF_API_DESTRUCT_PACKET
1280 FF_DISABLE_DEPRECATION_WARNINGS
1281 out_pkt.destruct = pkt->destruct;
1282 pkt->destruct = NULL;
1283 FF_ENABLE_DEPRECATION_WARNINGS
1286 if ((ret = av_dup_packet(&out_pkt)) < 0)
1289 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1290 av_free_packet(&out_pkt);
1291 ret = AVERROR(ENOMEM);
1297 /* end of the stream => close and free the parser */
1298 if (pkt == &flush_pkt) {
1299 av_parser_close(st->parser);
1304 av_free_packet(pkt);
1308 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1309 AVPacketList **pkt_buffer_end,
1313 av_assert0(*pkt_buffer);
1316 *pkt_buffer = pktl->next;
1318 *pkt_buffer_end = NULL;
1323 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1325 int ret = 0, i, got_packet = 0;
1327 av_init_packet(pkt);
1329 while (!got_packet && !s->parse_queue) {
1333 /* read next packet */
1334 ret = ff_read_packet(s, &cur_pkt);
1336 if (ret == AVERROR(EAGAIN))
1338 /* flush the parsers */
1339 for(i = 0; i < s->nb_streams; i++) {
1341 if (st->parser && st->need_parsing)
1342 parse_packet(s, NULL, st->index);
1344 /* all remaining packets are now in parse_queue =>
1345 * really terminate parsing */
1349 st = s->streams[cur_pkt.stream_index];
1351 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1352 cur_pkt.dts != AV_NOPTS_VALUE &&
1353 cur_pkt.pts < cur_pkt.dts) {
1354 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1355 cur_pkt.stream_index,
1356 av_ts2str(cur_pkt.pts),
1357 av_ts2str(cur_pkt.dts),
1360 if (s->debug & FF_FDEBUG_TS)
1361 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1362 cur_pkt.stream_index,
1363 av_ts2str(cur_pkt.pts),
1364 av_ts2str(cur_pkt.dts),
1369 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1370 st->parser = av_parser_init(st->codec->codec_id);
1372 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1373 "%s, packets or times may be invalid.\n",
1374 avcodec_get_name(st->codec->codec_id));
1375 /* no parser available: just output the raw packets */
1376 st->need_parsing = AVSTREAM_PARSE_NONE;
1377 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1378 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1379 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1380 st->parser->flags |= PARSER_FLAG_ONCE;
1381 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1382 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1386 if (!st->need_parsing || !st->parser) {
1387 /* no parsing needed: we just output the packet as is */
1389 compute_pkt_fields(s, st, NULL, pkt);
1390 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1391 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1392 ff_reduce_index(s, st->index);
1393 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1396 } else if (st->discard < AVDISCARD_ALL) {
1397 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1401 av_free_packet(&cur_pkt);
1403 if (pkt->flags & AV_PKT_FLAG_KEY)
1404 st->skip_to_keyframe = 0;
1405 if (st->skip_to_keyframe) {
1406 av_free_packet(&cur_pkt);
1414 if (!got_packet && s->parse_queue)
1415 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1418 AVStream *st = s->streams[pkt->stream_index];
1419 if (st->skip_samples) {
1420 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1422 AV_WL32(p, st->skip_samples);
1423 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1425 st->skip_samples = 0;
1429 if(ret >= 0 && !(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1430 av_packet_merge_side_data(pkt);
1432 if(s->debug & FF_FDEBUG_TS)
1433 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1435 av_ts2str(pkt->pts),
1436 av_ts2str(pkt->dts),
1444 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1446 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1452 ret = s->packet_buffer ?
1453 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1454 read_frame_internal(s, pkt);
1461 AVPacketList *pktl = s->packet_buffer;
1464 AVPacket *next_pkt = &pktl->pkt;
1466 if (next_pkt->dts != AV_NOPTS_VALUE) {
1467 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1468 // last dts seen for this stream. if any of packets following
1469 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1470 int64_t last_dts = next_pkt->dts;
1471 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1472 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1473 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1474 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1475 next_pkt->pts = pktl->pkt.dts;
1477 if (last_dts != AV_NOPTS_VALUE) {
1478 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1479 last_dts = pktl->pkt.dts;
1484 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1485 // Fixing the last reference frame had none pts issue (For MXF etc).
1486 // We only do this when
1488 // 2. we are not able to resolve a pts value for current packet.
1489 // 3. the packets for this stream at the end of the files had valid dts.
1490 next_pkt->pts = last_dts + next_pkt->duration;
1492 pktl = s->packet_buffer;
1495 /* read packet from packet buffer, if there is data */
1496 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1497 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1498 ret = read_from_packet_buffer(&s->packet_buffer,
1499 &s->packet_buffer_end, pkt);
1504 ret = read_frame_internal(s, pkt);
1506 if (pktl && ret != AVERROR(EAGAIN)) {
1513 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1514 &s->packet_buffer_end)) < 0)
1515 return AVERROR(ENOMEM);
1520 st = s->streams[pkt->stream_index];
1521 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1522 ff_reduce_index(s, st->index);
1523 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1526 if (is_relative(pkt->dts))
1527 pkt->dts -= RELATIVE_TS_BASE;
1528 if (is_relative(pkt->pts))
1529 pkt->pts -= RELATIVE_TS_BASE;
1534 /* XXX: suppress the packet queue */
1535 static void flush_packet_queue(AVFormatContext *s)
1537 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1538 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1539 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1541 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1544 /*******************************************************/
1547 int av_find_default_stream_index(AVFormatContext *s)
1549 int first_audio_index = -1;
1553 if (s->nb_streams <= 0)
1555 for(i = 0; i < s->nb_streams; i++) {
1557 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1558 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1561 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1562 first_audio_index = i;
1564 return first_audio_index >= 0 ? first_audio_index : 0;
1568 * Flush the frame reader.
1570 void ff_read_frame_flush(AVFormatContext *s)
1575 flush_packet_queue(s);
1577 /* for each stream, reset read state */
1578 for(i = 0; i < s->nb_streams; i++) {
1582 av_parser_close(st->parser);
1585 st->last_IP_pts = AV_NOPTS_VALUE;
1586 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1587 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1589 st->probe_packets = MAX_PROBE_PACKETS;
1591 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1592 st->pts_buffer[j]= AV_NOPTS_VALUE;
1596 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1600 for(i = 0; i < s->nb_streams; i++) {
1601 AVStream *st = s->streams[i];
1603 st->cur_dts = av_rescale(timestamp,
1604 st->time_base.den * (int64_t)ref_st->time_base.num,
1605 st->time_base.num * (int64_t)ref_st->time_base.den);
1609 void ff_reduce_index(AVFormatContext *s, int stream_index)
1611 AVStream *st= s->streams[stream_index];
1612 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1614 if((unsigned)st->nb_index_entries >= max_entries){
1616 for(i=0; 2*i<st->nb_index_entries; i++)
1617 st->index_entries[i]= st->index_entries[2*i];
1618 st->nb_index_entries= i;
1622 int ff_add_index_entry(AVIndexEntry **index_entries,
1623 int *nb_index_entries,
1624 unsigned int *index_entries_allocated_size,
1625 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1627 AVIndexEntry *entries, *ie;
1630 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1633 if(timestamp == AV_NOPTS_VALUE)
1634 return AVERROR(EINVAL);
1636 if (size < 0 || size > 0x3FFFFFFF)
1637 return AVERROR(EINVAL);
1639 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1640 timestamp -= RELATIVE_TS_BASE;
1642 entries = av_fast_realloc(*index_entries,
1643 index_entries_allocated_size,
1644 (*nb_index_entries + 1) *
1645 sizeof(AVIndexEntry));
1649 *index_entries= entries;
1651 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1654 index= (*nb_index_entries)++;
1655 ie= &entries[index];
1656 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1658 ie= &entries[index];
1659 if(ie->timestamp != timestamp){
1660 if(ie->timestamp <= timestamp)
1662 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1663 (*nb_index_entries)++;
1664 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1665 distance= ie->min_distance;
1669 ie->timestamp = timestamp;
1670 ie->min_distance= distance;
1677 int av_add_index_entry(AVStream *st,
1678 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1680 timestamp = wrap_timestamp(st, timestamp);
1681 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1682 &st->index_entries_allocated_size, pos,
1683 timestamp, size, distance, flags);
1686 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1687 int64_t wanted_timestamp, int flags)
1695 //optimize appending index entries at the end
1696 if(b && entries[b-1].timestamp < wanted_timestamp)
1701 timestamp = entries[m].timestamp;
1702 if(timestamp >= wanted_timestamp)
1704 if(timestamp <= wanted_timestamp)
1707 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1709 if(!(flags & AVSEEK_FLAG_ANY)){
1710 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1711 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1720 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1723 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1724 wanted_timestamp, flags);
1727 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1728 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1730 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1731 if (stream_index >= 0)
1732 ts = wrap_timestamp(s->streams[stream_index], ts);
1736 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1738 AVInputFormat *avif= s->iformat;
1739 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1740 int64_t ts_min, ts_max, ts;
1745 if (stream_index < 0)
1748 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1751 ts_min= AV_NOPTS_VALUE;
1752 pos_limit= -1; //gcc falsely says it may be uninitialized
1754 st= s->streams[stream_index];
1755 if(st->index_entries){
1758 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()
1759 index= FFMAX(index, 0);
1760 e= &st->index_entries[index];
1762 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1764 ts_min= e->timestamp;
1765 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1766 pos_min, av_ts2str(ts_min));
1768 av_assert1(index==0);
1771 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1772 av_assert0(index < st->nb_index_entries);
1774 e= &st->index_entries[index];
1775 av_assert1(e->timestamp >= target_ts);
1777 ts_max= e->timestamp;
1778 pos_limit= pos_max - e->min_distance;
1779 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1780 pos_max, pos_limit, av_ts2str(ts_max));
1784 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1789 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1792 ff_read_frame_flush(s);
1793 ff_update_cur_dts(s, st, ts);
1798 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1799 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1802 int64_t limit, ts_max;
1803 int64_t filesize = avio_size(s->pb);
1804 int64_t pos_max = filesize - 1;
1807 pos_max = FFMAX(0, (pos_max) - step);
1808 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1810 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1811 if (ts_max == AV_NOPTS_VALUE)
1815 int64_t tmp_pos = pos_max + 1;
1816 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1817 if(tmp_ts == AV_NOPTS_VALUE)
1819 av_assert0(tmp_pos > pos_max);
1822 if(tmp_pos >= filesize)
1834 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1835 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1836 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1837 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1844 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1846 if(ts_min == AV_NOPTS_VALUE){
1847 pos_min = s->data_offset;
1848 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1849 if (ts_min == AV_NOPTS_VALUE)
1853 if(ts_min >= target_ts){
1858 if(ts_max == AV_NOPTS_VALUE){
1859 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1864 if(ts_max <= target_ts){
1869 if(ts_min > ts_max){
1871 }else if(ts_min == ts_max){
1876 while (pos_min < pos_limit) {
1877 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1878 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1879 assert(pos_limit <= pos_max);
1882 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1883 // interpolate position (better than dichotomy)
1884 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1885 + pos_min - approximate_keyframe_distance;
1886 }else if(no_change==1){
1887 // bisection, if interpolation failed to change min or max pos last time
1888 pos = (pos_min + pos_limit)>>1;
1890 /* linear search if bisection failed, can only happen if there
1891 are very few or no keyframes between min/max */
1896 else if(pos > pos_limit)
1900 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1905 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1906 pos_min, pos, pos_max,
1907 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1908 pos_limit, start_pos, no_change);
1909 if(ts == AV_NOPTS_VALUE){
1910 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1913 assert(ts != AV_NOPTS_VALUE);
1914 if (target_ts <= ts) {
1915 pos_limit = start_pos - 1;
1919 if (target_ts >= ts) {
1925 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1926 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1929 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1931 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1932 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1933 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1939 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1940 int64_t pos_min, pos_max;
1942 pos_min = s->data_offset;
1943 pos_max = avio_size(s->pb) - 1;
1945 if (pos < pos_min) pos= pos_min;
1946 else if(pos > pos_max) pos= pos_max;
1948 avio_seek(s->pb, pos, SEEK_SET);
1950 s->io_repositioned = 1;
1955 static int seek_frame_generic(AVFormatContext *s,
1956 int stream_index, int64_t timestamp, int flags)
1963 st = s->streams[stream_index];
1965 index = av_index_search_timestamp(st, timestamp, flags);
1967 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1970 if(index < 0 || index==st->nb_index_entries-1){
1974 if(st->nb_index_entries){
1975 av_assert0(st->index_entries);
1976 ie= &st->index_entries[st->nb_index_entries-1];
1977 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1979 ff_update_cur_dts(s, st, ie->timestamp);
1981 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1987 read_status = av_read_frame(s, &pkt);
1988 } while (read_status == AVERROR(EAGAIN));
1989 if (read_status < 0)
1991 av_free_packet(&pkt);
1992 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1993 if(pkt.flags & AV_PKT_FLAG_KEY)
1995 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1996 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);
2001 index = av_index_search_timestamp(st, timestamp, flags);
2006 ff_read_frame_flush(s);
2007 if (s->iformat->read_seek){
2008 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2011 ie = &st->index_entries[index];
2012 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2014 ff_update_cur_dts(s, st, ie->timestamp);
2019 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2020 int64_t timestamp, int flags)
2025 if (flags & AVSEEK_FLAG_BYTE) {
2026 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2028 ff_read_frame_flush(s);
2029 return seek_frame_byte(s, stream_index, timestamp, flags);
2032 if(stream_index < 0){
2033 stream_index= av_find_default_stream_index(s);
2034 if(stream_index < 0)
2037 st= s->streams[stream_index];
2038 /* timestamp for default must be expressed in AV_TIME_BASE units */
2039 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2042 /* first, we try the format specific seek */
2043 if (s->iformat->read_seek) {
2044 ff_read_frame_flush(s);
2045 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2052 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2053 ff_read_frame_flush(s);
2054 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2055 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2056 ff_read_frame_flush(s);
2057 return seek_frame_generic(s, stream_index, timestamp, flags);
2063 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2067 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2068 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2069 if ((flags & AVSEEK_FLAG_BACKWARD))
2073 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2074 flags & ~AVSEEK_FLAG_BACKWARD);
2077 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2080 ret = avformat_queue_attached_pictures(s);
2085 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2087 if(min_ts > ts || max_ts < ts)
2089 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2090 return AVERROR(EINVAL);
2093 flags |= AVSEEK_FLAG_ANY;
2094 flags &= ~AVSEEK_FLAG_BACKWARD;
2096 if (s->iformat->read_seek2) {
2098 ff_read_frame_flush(s);
2100 if (stream_index == -1 && s->nb_streams == 1) {
2101 AVRational time_base = s->streams[0]->time_base;
2102 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2103 min_ts = av_rescale_rnd(min_ts, time_base.den,
2104 time_base.num * (int64_t)AV_TIME_BASE,
2105 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2106 max_ts = av_rescale_rnd(max_ts, time_base.den,
2107 time_base.num * (int64_t)AV_TIME_BASE,
2108 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2111 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2114 ret = avformat_queue_attached_pictures(s);
2118 if(s->iformat->read_timestamp){
2119 //try to seek via read_timestamp()
2122 // Fall back on old API if new is not implemented but old is.
2123 // Note the old API has somewhat different semantics.
2124 if (s->iformat->read_seek || 1) {
2125 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2126 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2127 if (ret<0 && ts != min_ts && max_ts != ts) {
2128 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2130 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2135 // try some generic seek like seek_frame_generic() but with new ts semantics
2136 return -1; //unreachable
2139 /*******************************************************/
2142 * Return TRUE if the stream has accurate duration in any stream.
2144 * @return TRUE if the stream has accurate duration for at least one component.
2146 static int has_duration(AVFormatContext *ic)
2151 for(i = 0;i < ic->nb_streams; i++) {
2152 st = ic->streams[i];
2153 if (st->duration != AV_NOPTS_VALUE)
2156 if (ic->duration != AV_NOPTS_VALUE)
2162 * Estimate the stream timings from the one of each components.
2164 * Also computes the global bitrate if possible.
2166 static void update_stream_timings(AVFormatContext *ic)
2168 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2169 int64_t duration, duration1, filesize;
2174 start_time = INT64_MAX;
2175 start_time_text = INT64_MAX;
2176 end_time = INT64_MIN;
2177 duration = INT64_MIN;
2178 for(i = 0;i < ic->nb_streams; i++) {
2179 st = ic->streams[i];
2180 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2181 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2182 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2183 if (start_time1 < start_time_text)
2184 start_time_text = start_time1;
2186 start_time = FFMIN(start_time, start_time1);
2187 end_time1 = AV_NOPTS_VALUE;
2188 if (st->duration != AV_NOPTS_VALUE) {
2189 end_time1 = start_time1
2190 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2191 end_time = FFMAX(end_time, end_time1);
2193 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2194 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2195 p->start_time = start_time1;
2196 if(p->end_time < end_time1)
2197 p->end_time = end_time1;
2200 if (st->duration != AV_NOPTS_VALUE) {
2201 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2202 duration = FFMAX(duration, duration1);
2205 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2206 start_time = start_time_text;
2207 else if(start_time > start_time_text)
2208 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2210 if (start_time != INT64_MAX) {
2211 ic->start_time = start_time;
2212 if (end_time != INT64_MIN) {
2213 if (ic->nb_programs) {
2214 for (i=0; i<ic->nb_programs; i++) {
2215 p = ic->programs[i];
2216 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2217 duration = FFMAX(duration, p->end_time - p->start_time);
2220 duration = FFMAX(duration, end_time - start_time);
2223 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2224 ic->duration = duration;
2226 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2227 /* compute the bitrate */
2228 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2229 (double)ic->duration;
2230 if (bitrate >= 0 && bitrate <= INT_MAX)
2231 ic->bit_rate = bitrate;
2235 static void fill_all_stream_timings(AVFormatContext *ic)
2240 update_stream_timings(ic);
2241 for(i = 0;i < ic->nb_streams; i++) {
2242 st = ic->streams[i];
2243 if (st->start_time == AV_NOPTS_VALUE) {
2244 if(ic->start_time != AV_NOPTS_VALUE)
2245 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2246 if(ic->duration != AV_NOPTS_VALUE)
2247 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2252 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2254 int64_t filesize, duration;
2255 int i, show_warning = 0;
2258 /* if bit_rate is already set, we believe it */
2259 if (ic->bit_rate <= 0) {
2261 for(i=0;i<ic->nb_streams;i++) {
2262 st = ic->streams[i];
2263 if (st->codec->bit_rate > 0) {
2264 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2268 bit_rate += st->codec->bit_rate;
2271 ic->bit_rate = bit_rate;
2274 /* if duration is already set, we believe it */
2275 if (ic->duration == AV_NOPTS_VALUE &&
2276 ic->bit_rate != 0) {
2277 filesize = ic->pb ? avio_size(ic->pb) : 0;
2279 for(i = 0; i < ic->nb_streams; i++) {
2280 st = ic->streams[i];
2281 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2282 && st->duration == AV_NOPTS_VALUE) {
2283 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2284 st->duration = duration;
2291 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2294 #define DURATION_MAX_READ_SIZE 250000LL
2295 #define DURATION_MAX_RETRY 4
2297 /* only usable for MPEG-PS streams */
2298 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2300 AVPacket pkt1, *pkt = &pkt1;
2302 int read_size, i, ret;
2304 int64_t filesize, offset, duration;
2307 /* flush packet queue */
2308 flush_packet_queue(ic);
2310 for (i=0; i<ic->nb_streams; i++) {
2311 st = ic->streams[i];
2312 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2313 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2316 av_parser_close(st->parser);
2321 /* estimate the end time (duration) */
2322 /* XXX: may need to support wrapping */
2323 filesize = ic->pb ? avio_size(ic->pb) : 0;
2324 end_time = AV_NOPTS_VALUE;
2326 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2330 avio_seek(ic->pb, offset, SEEK_SET);
2333 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2337 ret = ff_read_packet(ic, pkt);
2338 } while(ret == AVERROR(EAGAIN));
2341 read_size += pkt->size;
2342 st = ic->streams[pkt->stream_index];
2343 if (pkt->pts != AV_NOPTS_VALUE &&
2344 (st->start_time != AV_NOPTS_VALUE ||
2345 st->first_dts != AV_NOPTS_VALUE)) {
2346 duration = end_time = pkt->pts;
2347 if (st->start_time != AV_NOPTS_VALUE)
2348 duration -= st->start_time;
2350 duration -= st->first_dts;
2352 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2353 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2354 st->duration = duration;
2355 st->info->last_duration = duration;
2358 av_free_packet(pkt);
2360 }while( end_time==AV_NOPTS_VALUE
2361 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2362 && ++retry <= DURATION_MAX_RETRY);
2364 fill_all_stream_timings(ic);
2366 avio_seek(ic->pb, old_offset, SEEK_SET);
2367 for (i=0; i<ic->nb_streams; i++) {
2369 st->cur_dts= st->first_dts;
2370 st->last_IP_pts = AV_NOPTS_VALUE;
2374 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2378 /* get the file size, if possible */
2379 if (ic->iformat->flags & AVFMT_NOFILE) {
2382 file_size = avio_size(ic->pb);
2383 file_size = FFMAX(0, file_size);
2386 if ((!strcmp(ic->iformat->name, "mpeg") ||
2387 !strcmp(ic->iformat->name, "mpegts")) &&
2388 file_size && ic->pb->seekable) {
2389 /* get accurate estimate from the PTSes */
2390 estimate_timings_from_pts(ic, old_offset);
2391 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2392 } else if (has_duration(ic)) {
2393 /* at least one component has timings - we use them for all
2395 fill_all_stream_timings(ic);
2396 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2398 /* less precise: use bitrate info */
2399 estimate_timings_from_bit_rate(ic);
2400 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2402 update_stream_timings(ic);
2406 AVStream av_unused *st;
2407 for(i = 0;i < ic->nb_streams; i++) {
2408 st = ic->streams[i];
2409 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2410 (double) st->start_time / AV_TIME_BASE,
2411 (double) st->duration / AV_TIME_BASE);
2413 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2414 (double) ic->start_time / AV_TIME_BASE,
2415 (double) ic->duration / AV_TIME_BASE,
2416 ic->bit_rate / 1000);
2420 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2422 AVCodecContext *avctx = st->codec;
2424 #define FAIL(errmsg) do { \
2426 *errmsg_ptr = errmsg; \
2430 switch (avctx->codec_type) {
2431 case AVMEDIA_TYPE_AUDIO:
2432 if (!avctx->frame_size && determinable_frame_size(avctx))
2433 FAIL("unspecified frame size");
2434 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2435 FAIL("unspecified sample format");
2436 if (!avctx->sample_rate)
2437 FAIL("unspecified sample rate");
2438 if (!avctx->channels)
2439 FAIL("unspecified number of channels");
2440 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2441 FAIL("no decodable DTS frames");
2443 case AVMEDIA_TYPE_VIDEO:
2445 FAIL("unspecified size");
2446 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2447 FAIL("unspecified pixel format");
2448 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2449 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2450 FAIL("no frame in rv30/40 and no sar");
2452 case AVMEDIA_TYPE_SUBTITLE:
2453 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2454 FAIL("unspecified size");
2456 case AVMEDIA_TYPE_DATA:
2457 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2460 if (avctx->codec_id == AV_CODEC_ID_NONE)
2461 FAIL("unknown codec");
2465 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2466 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options)
2468 const AVCodec *codec;
2469 int got_picture = 1, ret = 0;
2470 AVFrame *frame = av_frame_alloc();
2471 AVSubtitle subtitle;
2472 AVPacket pkt = *avpkt;
2475 return AVERROR(ENOMEM);
2477 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2478 AVDictionary *thread_opt = NULL;
2480 codec = find_decoder(s, st, st->codec->codec_id);
2483 st->info->found_decoder = -1;
2488 /* force thread count to 1 since the h264 decoder will not extract SPS
2489 * and PPS to extradata during multi-threaded decoding */
2490 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2491 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2493 av_dict_free(&thread_opt);
2495 st->info->found_decoder = -1;
2498 st->info->found_decoder = 1;
2499 } else if (!st->info->found_decoder)
2500 st->info->found_decoder = 1;
2502 if (st->info->found_decoder < 0) {
2507 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2509 (!has_codec_parameters(st, NULL) ||
2510 !has_decode_delay_been_guessed(st) ||
2511 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2513 switch(st->codec->codec_type) {
2514 case AVMEDIA_TYPE_VIDEO:
2515 ret = avcodec_decode_video2(st->codec, frame,
2516 &got_picture, &pkt);
2518 case AVMEDIA_TYPE_AUDIO:
2519 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2521 case AVMEDIA_TYPE_SUBTITLE:
2522 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2523 &got_picture, &pkt);
2531 st->nb_decoded_frames++;
2538 if(!pkt.data && !got_picture)
2542 av_frame_free(&frame);
2546 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2548 while (tags->id != AV_CODEC_ID_NONE) {
2556 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2559 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2560 if(tag == tags[i].tag)
2563 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2564 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2567 return AV_CODEC_ID_NONE;
2570 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2574 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2575 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2576 default: return AV_CODEC_ID_NONE;
2581 if (sflags & (1 << (bps - 1))) {
2583 case 1: return AV_CODEC_ID_PCM_S8;
2584 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2585 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2586 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2587 default: return AV_CODEC_ID_NONE;
2591 case 1: return AV_CODEC_ID_PCM_U8;
2592 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2593 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2594 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2595 default: return AV_CODEC_ID_NONE;
2601 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2604 if (!av_codec_get_tag2(tags, id, &tag))
2609 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2613 for(i=0; tags && tags[i]; i++){
2614 const AVCodecTag *codec_tags = tags[i];
2615 while (codec_tags->id != AV_CODEC_ID_NONE) {
2616 if (codec_tags->id == id) {
2617 *tag = codec_tags->tag;
2626 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2629 for(i=0; tags && tags[i]; i++){
2630 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2631 if(id!=AV_CODEC_ID_NONE) return id;
2633 return AV_CODEC_ID_NONE;
2636 static void compute_chapters_end(AVFormatContext *s)
2639 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2641 for (i = 0; i < s->nb_chapters; i++)
2642 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2643 AVChapter *ch = s->chapters[i];
2644 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2647 for (j = 0; j < s->nb_chapters; j++) {
2648 AVChapter *ch1 = s->chapters[j];
2649 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2650 if (j != i && next_start > ch->start && next_start < end)
2653 ch->end = (end == INT64_MAX) ? ch->start : end;
2657 static int get_std_framerate(int i){
2658 if(i<60*12) return (i+1)*1001;
2659 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2663 * Is the time base unreliable.
2664 * This is a heuristic to balance between quick acceptance of the values in
2665 * the headers vs. some extra checks.
2666 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2667 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2668 * And there are "variable" fps files this needs to detect as well.
2670 static int tb_unreliable(AVCodecContext *c){
2671 if( c->time_base.den >= 101L*c->time_base.num
2672 || c->time_base.den < 5L*c->time_base.num
2673 /* || c->codec_tag == AV_RL32("DIVX")
2674 || c->codec_tag == AV_RL32("XVID")*/
2675 || c->codec_tag == AV_RL32("mp4v")
2676 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2677 || c->codec_id == AV_CODEC_ID_H264
2683 #if FF_API_FORMAT_PARAMETERS
2684 int av_find_stream_info(AVFormatContext *ic)
2686 return avformat_find_stream_info(ic, NULL);
2690 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2694 if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
2695 avctx->extradata_size = 0;
2696 return AVERROR(EINVAL);
2698 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2699 if (avctx->extradata) {
2700 memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2701 avctx->extradata_size = size;
2704 avctx->extradata_size = 0;
2705 ret = AVERROR(ENOMEM);
2710 int ff_get_extradata(AVCodecContext *avctx, AVIOContext *pb, int size)
2712 int ret = ff_alloc_extradata(avctx, size);
2715 ret = avio_read(pb, avctx->extradata, size);
2717 av_freep(&avctx->extradata);
2718 avctx->extradata_size = 0;
2719 av_log(avctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
2720 return ret < 0 ? ret : AVERROR_INVALIDDATA;
2726 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2729 int64_t last = st->info->last_dts;
2731 if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2732 && ts - (uint64_t)last < INT64_MAX){
2733 double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2734 int64_t duration= ts - last;
2736 if (!st->info->duration_error)
2737 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2738 if (!st->info->duration_error)
2739 return AVERROR(ENOMEM);
2741 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2742 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2743 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2744 if (st->info->duration_error[0][1][i] < 1e10) {
2745 int framerate= get_std_framerate(i);
2746 double sdts= dts*framerate/(1001*12);
2748 int64_t ticks= llrint(sdts+j*0.5);
2749 double error= sdts - ticks + j*0.5;
2750 st->info->duration_error[j][0][i] += error;
2751 st->info->duration_error[j][1][i] += error*error;
2755 st->info->duration_count++;
2756 st->info->rfps_duration_sum += duration;
2758 if (st->info->duration_count % 10 == 0) {
2759 int n = st->info->duration_count;
2760 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2761 if (st->info->duration_error[0][1][i] < 1e10) {
2762 double a0 = st->info->duration_error[0][0][i] / n;
2763 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2764 double a1 = st->info->duration_error[1][0][i] / n;
2765 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
2766 if (error0 > 0.04 && error1 > 0.04) {
2767 st->info->duration_error[0][1][i] = 2e10;
2768 st->info->duration_error[1][1][i] = 2e10;
2774 // ignore the first 4 values, they might have some random jitter
2775 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
2776 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2778 if (ts != AV_NOPTS_VALUE)
2779 st->info->last_dts = ts;
2784 void ff_rfps_calculate(AVFormatContext *ic)
2788 for (i = 0; i<ic->nb_streams; i++) {
2789 AVStream *st = ic->streams[i];
2791 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2793 // the check for tb_unreliable() is not completely correct, since this is not about handling
2794 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2795 // ipmovie.c produces.
2796 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)
2797 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);
2798 if (st->info->duration_count>1 && !st->r_frame_rate.num
2799 && tb_unreliable(st->codec)) {
2801 double best_error= 0.01;
2803 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2806 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2808 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2811 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
2815 int n= st->info->duration_count;
2816 double a= st->info->duration_error[k][0][j] / n;
2817 double error= st->info->duration_error[k][1][j]/n - a*a;
2819 if(error < best_error && best_error> 0.000000001){
2821 num = get_std_framerate(j);
2824 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2827 // do not increase frame rate by more than 1 % in order to match a standard rate.
2828 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2829 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2832 av_freep(&st->info->duration_error);
2833 st->info->last_dts = AV_NOPTS_VALUE;
2834 st->info->duration_count = 0;
2835 st->info->rfps_duration_sum = 0;
2839 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2841 int i, count, ret = 0, j;
2844 AVPacket pkt1, *pkt;
2845 int64_t old_offset = avio_tell(ic->pb);
2846 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2847 int flush_codecs = ic->probesize > 0;
2850 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
2851 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
2853 for(i=0;i<ic->nb_streams;i++) {
2854 const AVCodec *codec;
2855 AVDictionary *thread_opt = NULL;
2856 st = ic->streams[i];
2858 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2859 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2860 /* if(!st->time_base.num)
2862 if(!st->codec->time_base.num)
2863 st->codec->time_base= st->time_base;
2865 //only for the split stuff
2866 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2867 st->parser = av_parser_init(st->codec->codec_id);
2869 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2870 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2871 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2872 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2874 } else if (st->need_parsing) {
2875 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2876 "%s, packets or times may be invalid.\n",
2877 avcodec_get_name(st->codec->codec_id));
2880 codec = find_decoder(ic, st, st->codec->codec_id);
2882 /* force thread count to 1 since the h264 decoder will not extract SPS
2883 * and PPS to extradata during multi-threaded decoding */
2884 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2886 /* Ensure that subtitle_header is properly set. */
2887 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2888 && codec && !st->codec->codec) {
2889 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2890 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2893 //try to just open decoders, in case this is enough to get parameters
2894 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2895 if (codec && !st->codec->codec)
2896 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2897 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2900 av_dict_free(&thread_opt);
2903 for (i=0; i<ic->nb_streams; i++) {
2904 #if FF_API_R_FRAME_RATE
2905 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2907 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2908 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2914 if (ff_check_interrupt(&ic->interrupt_callback)){
2916 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2920 /* check if one codec still needs to be handled */
2921 for(i=0;i<ic->nb_streams;i++) {
2922 int fps_analyze_framecount = 20;
2924 st = ic->streams[i];
2925 if (!has_codec_parameters(st, NULL))
2927 /* if the timebase is coarse (like the usual millisecond precision
2928 of mkv), we need to analyze more frames to reliably arrive at
2930 if (av_q2d(st->time_base) > 0.0005)
2931 fps_analyze_framecount *= 2;
2932 if (ic->fps_probe_size >= 0)
2933 fps_analyze_framecount = ic->fps_probe_size;
2934 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2935 fps_analyze_framecount = 0;
2936 /* variable fps and no guess at the real fps */
2937 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2938 && st->info->duration_count < fps_analyze_framecount
2939 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2941 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2943 if (st->first_dts == AV_NOPTS_VALUE &&
2944 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2945 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2948 if (i == ic->nb_streams) {
2949 /* NOTE: if the format has no header, then we need to read
2950 some packets to get most of the streams, so we cannot
2952 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2953 /* if we found the info for all the codecs, we can stop */
2955 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2960 /* we did not get all the codec info, but we read too much data */
2961 if (read_size >= ic->probesize) {
2963 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2964 for (i = 0; i < ic->nb_streams; i++)
2965 if (!ic->streams[i]->r_frame_rate.num &&
2966 ic->streams[i]->info->duration_count <= 1 &&
2967 strcmp(ic->iformat->name, "image2"))
2968 av_log(ic, AV_LOG_WARNING,
2969 "Stream #%d: not enough frames to estimate rate; "
2970 "consider increasing probesize\n", i);
2974 /* NOTE: a new stream can be added there if no header in file
2975 (AVFMTCTX_NOHEADER) */
2976 ret = read_frame_internal(ic, &pkt1);
2977 if (ret == AVERROR(EAGAIN))
2985 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2986 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2988 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2989 &ic->packet_buffer_end);
2991 ret = AVERROR(ENOMEM);
2992 goto find_stream_info_err;
2994 if ((ret = av_dup_packet(pkt)) < 0)
2995 goto find_stream_info_err;
2998 st = ic->streams[pkt->stream_index];
2999 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3000 read_size += pkt->size;
3002 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3003 /* check for non-increasing dts */
3004 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3005 st->info->fps_last_dts >= pkt->dts) {
3006 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
3007 "packet %d with DTS %"PRId64", packet %d with DTS "
3008 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3009 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3010 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3012 /* check for a discontinuity in dts - if the difference in dts
3013 * is more than 1000 times the average packet duration in the sequence,
3014 * we treat it as a discontinuity */
3015 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3016 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3017 (pkt->dts - st->info->fps_last_dts) / 1000 >
3018 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3019 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
3020 "packet %d with DTS %"PRId64", packet %d with DTS "
3021 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3022 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3023 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3026 /* update stored dts values */
3027 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3028 st->info->fps_first_dts = pkt->dts;
3029 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3031 st->info->fps_last_dts = pkt->dts;
3032 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3034 if (st->codec_info_nb_frames>1) {
3036 if (st->time_base.den > 0)
3037 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3038 if (st->avg_frame_rate.num > 0)
3039 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3042 && st->codec_info_nb_frames>30
3043 && st->info->fps_first_dts != AV_NOPTS_VALUE
3044 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3045 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3047 if (t >= ic->max_analyze_duration) {
3048 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
3051 if (pkt->duration) {
3052 st->info->codec_info_duration += pkt->duration;
3053 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
3056 #if FF_API_R_FRAME_RATE
3057 ff_rfps_add_frame(ic, st, pkt->dts);
3059 if(st->parser && st->parser->parser->split && !st->codec->extradata){
3060 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
3061 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3062 if (ff_alloc_extradata(st->codec, i))
3063 return AVERROR(ENOMEM);
3064 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
3068 /* if still no information, we try to open the codec and to
3069 decompress the frame. We try to avoid that in most cases as
3070 it takes longer and uses more memory. For MPEG-4, we need to
3071 decompress for QuickTime.
3073 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3074 least one frame of codec data, this makes sure the codec initializes
3075 the channel configuration and does not only trust the values from the container.
3077 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
3079 st->codec_info_nb_frames++;
3084 AVPacket empty_pkt = { 0 };
3086 av_init_packet(&empty_pkt);
3088 for(i=0;i<ic->nb_streams;i++) {
3090 st = ic->streams[i];
3092 /* flush the decoders */
3093 if (st->info->found_decoder == 1) {
3095 err = try_decode_frame(ic, st, &empty_pkt,
3096 (options && i < orig_nb_streams) ?
3097 &options[i] : NULL);
3098 } while (err > 0 && !has_codec_parameters(st, NULL));
3101 av_log(ic, AV_LOG_INFO,
3102 "decoding for stream %d failed\n", st->index);
3108 // close codecs which were opened in try_decode_frame()
3109 for(i=0;i<ic->nb_streams;i++) {
3110 st = ic->streams[i];
3111 avcodec_close(st->codec);
3114 ff_rfps_calculate(ic);
3116 for(i=0;i<ic->nb_streams;i++) {
3117 st = ic->streams[i];
3118 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3119 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3120 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3121 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3122 st->codec->codec_tag= tag;
3125 /* estimate average framerate if not set by demuxer */
3126 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3128 double best_error = 0.01;
3130 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3131 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3132 st->info->codec_info_duration < 0)
3134 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3135 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3136 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3138 /* round guessed framerate to a "standard" framerate if it's
3139 * within 1% of the original estimate*/
3140 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3141 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3142 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3144 if (error < best_error) {
3146 best_fps = std_fps.num;
3150 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3151 best_fps, 12*1001, INT_MAX);
3155 if (!st->r_frame_rate.num){
3156 if( st->codec->time_base.den * (int64_t)st->time_base.num
3157 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3158 st->r_frame_rate.num = st->codec->time_base.den;
3159 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3161 st->r_frame_rate.num = st->time_base.den;
3162 st->r_frame_rate.den = st->time_base.num;
3165 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3166 if(!st->codec->bits_per_coded_sample)
3167 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3168 // set stream disposition based on audio service type
3169 switch (st->codec->audio_service_type) {
3170 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3171 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3172 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3173 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3174 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3175 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3176 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3177 st->disposition = AV_DISPOSITION_COMMENT; break;
3178 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3179 st->disposition = AV_DISPOSITION_KARAOKE; break;
3185 estimate_timings(ic, old_offset);
3187 if (ret >= 0 && ic->nb_streams)
3188 ret = -1; /* we could not have all the codec parameters before EOF */
3189 for(i=0;i<ic->nb_streams;i++) {
3191 st = ic->streams[i];
3192 if (!has_codec_parameters(st, &errmsg)) {
3194 avcodec_string(buf, sizeof(buf), st->codec, 0);
3195 av_log(ic, AV_LOG_WARNING,
3196 "Could not find codec parameters for stream %d (%s): %s\n"
3197 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3204 compute_chapters_end(ic);
3206 find_stream_info_err:
3207 for (i=0; i < ic->nb_streams; i++) {
3208 st = ic->streams[i];
3209 if (ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3210 ic->streams[i]->codec->thread_count = 0;
3212 av_freep(&st->info->duration_error);
3213 av_freep(&ic->streams[i]->info);
3216 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3217 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3221 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3225 for (i = 0; i < ic->nb_programs; i++) {
3226 if (ic->programs[i] == last) {
3230 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3231 if (ic->programs[i]->stream_index[j] == s)
3232 return ic->programs[i];
3238 int av_find_best_stream(AVFormatContext *ic,
3239 enum AVMediaType type,
3240 int wanted_stream_nb,
3242 AVCodec **decoder_ret,
3245 int i, nb_streams = ic->nb_streams;
3246 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3247 unsigned *program = NULL;
3248 AVCodec *decoder = NULL, *best_decoder = NULL;
3250 if (related_stream >= 0 && wanted_stream_nb < 0) {
3251 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3253 program = p->stream_index;
3254 nb_streams = p->nb_stream_indexes;
3257 for (i = 0; i < nb_streams; i++) {
3258 int real_stream_index = program ? program[i] : i;
3259 AVStream *st = ic->streams[real_stream_index];
3260 AVCodecContext *avctx = st->codec;
3261 if (avctx->codec_type != type)
3263 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3265 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3268 decoder = find_decoder(ic, st, st->codec->codec_id);
3271 ret = AVERROR_DECODER_NOT_FOUND;
3275 count = st->codec_info_nb_frames;
3276 bitrate = avctx->bit_rate;
3277 multiframe = FFMIN(5, count);
3278 if ((best_multiframe > multiframe) ||
3279 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3280 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3283 best_bitrate = bitrate;
3284 best_multiframe = multiframe;
3285 ret = real_stream_index;
3286 best_decoder = decoder;
3287 if (program && i == nb_streams - 1 && ret < 0) {
3289 nb_streams = ic->nb_streams;
3290 i = 0; /* no related stream found, try again with everything */
3294 *decoder_ret = best_decoder;
3298 /*******************************************************/
3300 int av_read_play(AVFormatContext *s)
3302 if (s->iformat->read_play)
3303 return s->iformat->read_play(s);
3305 return avio_pause(s->pb, 0);
3306 return AVERROR(ENOSYS);
3309 int av_read_pause(AVFormatContext *s)
3311 if (s->iformat->read_pause)
3312 return s->iformat->read_pause(s);
3314 return avio_pause(s->pb, 1);
3315 return AVERROR(ENOSYS);
3318 void ff_free_stream(AVFormatContext *s, AVStream *st){
3319 av_assert0(s->nb_streams>0);
3320 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3323 av_parser_close(st->parser);
3325 if (st->attached_pic.data)
3326 av_free_packet(&st->attached_pic);
3327 av_dict_free(&st->metadata);
3328 av_freep(&st->probe_data.buf);
3329 av_freep(&st->index_entries);
3330 av_freep(&st->codec->extradata);
3331 av_freep(&st->codec->subtitle_header);
3332 av_freep(&st->codec);
3333 av_freep(&st->priv_data);
3335 av_freep(&st->info->duration_error);
3336 av_freep(&st->info);
3337 av_freep(&s->streams[ --s->nb_streams ]);
3340 void avformat_free_context(AVFormatContext *s)
3348 if (s->iformat && s->iformat->priv_class && s->priv_data)
3349 av_opt_free(s->priv_data);
3351 for(i=s->nb_streams-1; i>=0; i--) {
3352 ff_free_stream(s, s->streams[i]);
3354 for(i=s->nb_programs-1; i>=0; i--) {
3355 av_dict_free(&s->programs[i]->metadata);
3356 av_freep(&s->programs[i]->stream_index);
3357 av_freep(&s->programs[i]);
3359 av_freep(&s->programs);
3360 av_freep(&s->priv_data);
3361 while(s->nb_chapters--) {
3362 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3363 av_freep(&s->chapters[s->nb_chapters]);
3365 av_freep(&s->chapters);
3366 av_dict_free(&s->metadata);
3367 av_freep(&s->streams);
3371 #if FF_API_CLOSE_INPUT_FILE
3372 void av_close_input_file(AVFormatContext *s)
3374 avformat_close_input(&s);
3378 void avformat_close_input(AVFormatContext **ps)
3389 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3390 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3393 flush_packet_queue(s);
3396 if (s->iformat->read_close)
3397 s->iformat->read_close(s);
3400 avformat_free_context(s);
3407 #if FF_API_NEW_STREAM
3408 AVStream *av_new_stream(AVFormatContext *s, int id)
3410 AVStream *st = avformat_new_stream(s, NULL);
3417 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3423 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3425 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3428 s->streams = streams;
3430 st = av_mallocz(sizeof(AVStream));
3433 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3437 st->info->last_dts = AV_NOPTS_VALUE;
3439 st->codec = avcodec_alloc_context3(c);
3441 /* no default bitrate if decoding */
3442 st->codec->bit_rate = 0;
3444 st->index = s->nb_streams;
3445 st->start_time = AV_NOPTS_VALUE;
3446 st->duration = AV_NOPTS_VALUE;
3447 /* we set the current DTS to 0 so that formats without any timestamps
3448 but durations get some timestamps, formats with some unknown
3449 timestamps have their first few packets buffered and the
3450 timestamps corrected before they are returned to the user */
3451 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3452 st->first_dts = AV_NOPTS_VALUE;
3453 st->probe_packets = MAX_PROBE_PACKETS;
3454 st->pts_wrap_reference = AV_NOPTS_VALUE;
3455 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3457 /* default pts setting is MPEG-like */
3458 avpriv_set_pts_info(st, 33, 1, 90000);
3459 st->last_IP_pts = AV_NOPTS_VALUE;
3460 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3461 st->pts_buffer[i]= AV_NOPTS_VALUE;
3463 st->sample_aspect_ratio = (AVRational){0,1};
3465 #if FF_API_R_FRAME_RATE
3466 st->info->last_dts = AV_NOPTS_VALUE;
3468 st->info->fps_first_dts = AV_NOPTS_VALUE;
3469 st->info->fps_last_dts = AV_NOPTS_VALUE;
3471 s->streams[s->nb_streams++] = st;
3475 AVProgram *av_new_program(AVFormatContext *ac, int id)
3477 AVProgram *program=NULL;
3480 av_dlog(ac, "new_program: id=0x%04x\n", id);
3482 for(i=0; i<ac->nb_programs; i++)
3483 if(ac->programs[i]->id == id)
3484 program = ac->programs[i];
3487 program = av_mallocz(sizeof(AVProgram));
3490 dynarray_add(&ac->programs, &ac->nb_programs, program);
3491 program->discard = AVDISCARD_NONE;
3494 program->pts_wrap_reference = AV_NOPTS_VALUE;
3495 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3497 program->start_time =
3498 program->end_time = AV_NOPTS_VALUE;
3503 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3505 AVChapter *chapter = NULL;
3508 for(i=0; i<s->nb_chapters; i++)
3509 if(s->chapters[i]->id == id)
3510 chapter = s->chapters[i];
3513 chapter= av_mallocz(sizeof(AVChapter));
3516 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3518 av_dict_set(&chapter->metadata, "title", title, 0);
3520 chapter->time_base= time_base;
3521 chapter->start = start;
3527 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3530 AVProgram *program=NULL;
3533 if (idx >= ac->nb_streams) {
3534 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3538 for(i=0; i<ac->nb_programs; i++){
3539 if(ac->programs[i]->id != progid)
3541 program = ac->programs[i];
3542 for(j=0; j<program->nb_stream_indexes; j++)
3543 if(program->stream_index[j] == idx)
3546 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3549 program->stream_index = tmp;
3550 program->stream_index[program->nb_stream_indexes++] = idx;
3555 static void print_fps(double d, const char *postfix){
3556 uint64_t v= lrintf(d*100);
3557 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3558 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3559 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3562 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3564 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3565 AVDictionaryEntry *tag=NULL;
3567 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3568 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3569 if(strcmp("language", tag->key)){
3570 const char *p = tag->value;
3571 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3574 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3575 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3576 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3578 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3579 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3582 av_log(ctx, AV_LOG_INFO, "\n");
3588 /* "user interface" functions */
3589 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3592 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3593 AVStream *st = ic->streams[i];
3594 int g = av_gcd(st->time_base.num, st->time_base.den);
3595 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3596 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3597 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3598 /* the pid is an important information, so we display it */
3599 /* XXX: add a generic system */
3600 if (flags & AVFMT_SHOW_IDS)
3601 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3603 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3604 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3605 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3606 if (st->sample_aspect_ratio.num && // default
3607 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3608 AVRational display_aspect_ratio;
3609 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3610 st->codec->width*st->sample_aspect_ratio.num,
3611 st->codec->height*st->sample_aspect_ratio.den,
3613 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3614 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3615 display_aspect_ratio.num, display_aspect_ratio.den);
3617 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3618 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3619 print_fps(av_q2d(st->avg_frame_rate), "fps");
3620 #if FF_API_R_FRAME_RATE
3621 if(st->r_frame_rate.den && st->r_frame_rate.num)
3622 print_fps(av_q2d(st->r_frame_rate), "tbr");
3624 if(st->time_base.den && st->time_base.num)
3625 print_fps(1/av_q2d(st->time_base), "tbn");
3626 if(st->codec->time_base.den && st->codec->time_base.num)
3627 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3629 if (st->disposition & AV_DISPOSITION_DEFAULT)
3630 av_log(NULL, AV_LOG_INFO, " (default)");
3631 if (st->disposition & AV_DISPOSITION_DUB)
3632 av_log(NULL, AV_LOG_INFO, " (dub)");
3633 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3634 av_log(NULL, AV_LOG_INFO, " (original)");
3635 if (st->disposition & AV_DISPOSITION_COMMENT)
3636 av_log(NULL, AV_LOG_INFO, " (comment)");
3637 if (st->disposition & AV_DISPOSITION_LYRICS)
3638 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3639 if (st->disposition & AV_DISPOSITION_KARAOKE)
3640 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3641 if (st->disposition & AV_DISPOSITION_FORCED)
3642 av_log(NULL, AV_LOG_INFO, " (forced)");
3643 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3644 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3645 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3646 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3647 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3648 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3649 av_log(NULL, AV_LOG_INFO, "\n");
3650 dump_metadata(NULL, st->metadata, " ");
3653 void av_dump_format(AVFormatContext *ic,
3659 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3660 if (ic->nb_streams && !printed)
3663 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3664 is_output ? "Output" : "Input",
3666 is_output ? ic->oformat->name : ic->iformat->name,
3667 is_output ? "to" : "from", url);
3668 dump_metadata(NULL, ic->metadata, " ");
3670 av_log(NULL, AV_LOG_INFO, " Duration: ");
3671 if (ic->duration != AV_NOPTS_VALUE) {
3672 int hours, mins, secs, us;
3673 int64_t duration = ic->duration + 5000;
3674 secs = duration / AV_TIME_BASE;
3675 us = duration % AV_TIME_BASE;
3680 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3681 (100 * us) / AV_TIME_BASE);
3683 av_log(NULL, AV_LOG_INFO, "N/A");
3685 if (ic->start_time != AV_NOPTS_VALUE) {
3687 av_log(NULL, AV_LOG_INFO, ", start: ");
3688 secs = ic->start_time / AV_TIME_BASE;
3689 us = abs(ic->start_time % AV_TIME_BASE);
3690 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3691 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3693 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3695 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3697 av_log(NULL, AV_LOG_INFO, "N/A");
3699 av_log(NULL, AV_LOG_INFO, "\n");
3701 for (i = 0; i < ic->nb_chapters; i++) {
3702 AVChapter *ch = ic->chapters[i];
3703 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3704 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3705 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3707 dump_metadata(NULL, ch->metadata, " ");
3709 if(ic->nb_programs) {
3710 int j, k, total = 0;
3711 for(j=0; j<ic->nb_programs; j++) {
3712 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3714 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3715 name ? name->value : "");
3716 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3717 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3718 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3719 printed[ic->programs[j]->stream_index[k]] = 1;
3721 total += ic->programs[j]->nb_stream_indexes;
3723 if (total < ic->nb_streams)
3724 av_log(NULL, AV_LOG_INFO, " No Program\n");
3726 for(i=0;i<ic->nb_streams;i++)
3728 dump_stream_format(ic, i, index, is_output);
3733 uint64_t ff_ntp_time(void)
3735 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3738 int av_get_frame_filename(char *buf, int buf_size,
3739 const char *path, int number)
3742 char *q, buf1[20], c;
3743 int nd, len, percentd_found;
3755 while (av_isdigit(*p)) {
3756 nd = nd * 10 + *p++ - '0';
3759 } while (av_isdigit(c));
3768 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3770 if ((q - buf + len) > buf_size - 1)
3772 memcpy(q, buf1, len);
3780 if ((q - buf) < buf_size - 1)
3784 if (!percentd_found)
3793 static void hex_dump_internal(void *avcl, FILE *f, int level,
3794 const uint8_t *buf, int size)
3797 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3799 for(i=0;i<size;i+=16) {
3806 PRINT(" %02x", buf[i+j]);
3811 for(j=0;j<len;j++) {
3813 if (c < ' ' || c > '~')
3822 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3824 hex_dump_internal(NULL, f, 0, buf, size);
3827 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3829 hex_dump_internal(avcl, NULL, level, buf, size);
3832 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3834 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3835 PRINT("stream #%d:\n", pkt->stream_index);
3836 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3837 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3838 /* DTS is _always_ valid after av_read_frame() */
3840 if (pkt->dts == AV_NOPTS_VALUE)
3843 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3844 /* PTS may not be known if B-frames are present. */
3846 if (pkt->pts == AV_NOPTS_VALUE)
3849 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3851 PRINT(" size=%d\n", pkt->size);
3854 av_hex_dump(f, pkt->data, pkt->size);
3857 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3859 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3862 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3865 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3868 void av_url_split(char *proto, int proto_size,
3869 char *authorization, int authorization_size,
3870 char *hostname, int hostname_size,
3872 char *path, int path_size,
3875 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3877 if (port_ptr) *port_ptr = -1;
3878 if (proto_size > 0) proto[0] = 0;
3879 if (authorization_size > 0) authorization[0] = 0;
3880 if (hostname_size > 0) hostname[0] = 0;
3881 if (path_size > 0) path[0] = 0;
3883 /* parse protocol */
3884 if ((p = strchr(url, ':'))) {
3885 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3890 /* no protocol means plain filename */
3891 av_strlcpy(path, url, path_size);
3895 /* separate path from hostname */
3896 ls = strchr(p, '/');
3897 ls2 = strchr(p, '?');
3901 ls = FFMIN(ls, ls2);
3903 av_strlcpy(path, ls, path_size);
3905 ls = &p[strlen(p)]; // XXX
3907 /* the rest is hostname, use that to parse auth/port */
3909 /* authorization (user[:pass]@hostname) */
3911 while ((at = strchr(p, '@')) && at < ls) {
3912 av_strlcpy(authorization, at2,
3913 FFMIN(authorization_size, at + 1 - at2));
3914 p = at + 1; /* skip '@' */
3917 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3919 av_strlcpy(hostname, p + 1,
3920 FFMIN(hostname_size, brk - p));
3921 if (brk[1] == ':' && port_ptr)
3922 *port_ptr = atoi(brk + 2);
3923 } else if ((col = strchr(p, ':')) && col < ls) {
3924 av_strlcpy(hostname, p,
3925 FFMIN(col + 1 - p, hostname_size));
3926 if (port_ptr) *port_ptr = atoi(col + 1);
3928 av_strlcpy(hostname, p,
3929 FFMIN(ls + 1 - p, hostname_size));
3933 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3936 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3939 'C', 'D', 'E', 'F' };
3940 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3943 'c', 'd', 'e', 'f' };
3944 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3946 for(i = 0; i < s; i++) {
3947 buff[i * 2] = hex_table[src[i] >> 4];
3948 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3954 int ff_hex_to_data(uint8_t *data, const char *p)
3961 p += strspn(p, SPACE_CHARS);
3964 c = av_toupper((unsigned char) *p++);
3965 if (c >= '0' && c <= '9')
3967 else if (c >= 'A' && c <= 'F')
3982 #if FF_API_SET_PTS_INFO
3983 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3984 unsigned int pts_num, unsigned int pts_den)
3986 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3990 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3991 unsigned int pts_num, unsigned int pts_den)
3994 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3995 if(new_tb.num != pts_num)
3996 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3998 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4000 if(new_tb.num <= 0 || new_tb.den <= 0) {
4001 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);
4004 s->time_base = new_tb;
4005 av_codec_set_pkt_timebase(s->codec, new_tb);
4006 s->pts_wrap_bits = pts_wrap_bits;
4009 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4012 const char *ptr = str;
4014 /* Parse key=value pairs. */
4017 char *dest = NULL, *dest_end;
4018 int key_len, dest_len = 0;
4020 /* Skip whitespace and potential commas. */
4021 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4028 if (!(ptr = strchr(key, '=')))
4031 key_len = ptr - key;
4033 callback_get_buf(context, key, key_len, &dest, &dest_len);
4034 dest_end = dest + dest_len - 1;
4038 while (*ptr && *ptr != '\"') {
4042 if (dest && dest < dest_end)
4046 if (dest && dest < dest_end)
4054 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4055 if (dest && dest < dest_end)
4063 int ff_find_stream_index(AVFormatContext *s, int id)
4066 for (i = 0; i < s->nb_streams; i++) {
4067 if (s->streams[i]->id == id)
4073 int64_t ff_iso8601_to_unix_time(const char *datestr)
4075 struct tm time1 = {0}, time2 = {0};
4077 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4078 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4080 return av_timegm(&time2);
4082 return av_timegm(&time1);
4085 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4088 if (ofmt->query_codec)
4089 return ofmt->query_codec(codec_id, std_compliance);
4090 else if (ofmt->codec_tag)
4091 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4092 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4093 codec_id == ofmt->subtitle_codec)
4096 return AVERROR_PATCHWELCOME;
4099 int avformat_network_init(void)
4103 ff_network_inited_globally = 1;
4104 if ((ret = ff_network_init()) < 0)
4111 int avformat_network_deinit(void)
4120 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4121 uint64_t channel_layout, int32_t sample_rate,
4122 int32_t width, int32_t height)
4128 return AVERROR(EINVAL);
4131 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4133 if (channel_layout) {
4135 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4139 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4141 if (width || height) {
4143 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4145 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4147 return AVERROR(ENOMEM);
4148 bytestream_put_le32(&data, flags);
4150 bytestream_put_le32(&data, channels);
4152 bytestream_put_le64(&data, channel_layout);
4154 bytestream_put_le32(&data, sample_rate);
4155 if (width || height) {
4156 bytestream_put_le32(&data, width);
4157 bytestream_put_le32(&data, height);
4162 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4164 AVRational undef = {0, 1};
4165 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4166 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4167 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4169 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4170 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4171 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4172 stream_sample_aspect_ratio = undef;
4174 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4175 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4176 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4177 frame_sample_aspect_ratio = undef;
4179 if (stream_sample_aspect_ratio.num)
4180 return stream_sample_aspect_ratio;
4182 return frame_sample_aspect_ratio;
4185 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4187 AVRational fr = st->r_frame_rate;
4189 if (st->codec->ticks_per_frame > 1) {
4190 AVRational codec_fr = av_inv_q(st->codec->time_base);
4191 AVRational avg_fr = st->avg_frame_rate;
4192 codec_fr.den *= st->codec->ticks_per_frame;
4193 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4194 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4201 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4204 if (*spec <= '9' && *spec >= '0') /* opt:index */
4205 return strtol(spec, NULL, 0) == st->index;
4206 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4207 *spec == 't') { /* opt:[vasdt] */
4208 enum AVMediaType type;
4211 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4212 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4213 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4214 case 'd': type = AVMEDIA_TYPE_DATA; break;
4215 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4216 default: av_assert0(0);
4218 if (type != st->codec->codec_type)
4220 if (*spec++ == ':') { /* possibly followed by :index */
4221 int i, index = strtol(spec, NULL, 0);
4222 for (i = 0; i < s->nb_streams; i++)
4223 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4224 return i == st->index;
4228 } else if (*spec == 'p' && *(spec + 1) == ':') {
4232 prog_id = strtol(spec, &endptr, 0);
4233 for (i = 0; i < s->nb_programs; i++) {
4234 if (s->programs[i]->id != prog_id)
4237 if (*endptr++ == ':') {
4238 int stream_idx = strtol(endptr, NULL, 0);
4239 return stream_idx >= 0 &&
4240 stream_idx < s->programs[i]->nb_stream_indexes &&
4241 st->index == s->programs[i]->stream_index[stream_idx];
4244 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4245 if (st->index == s->programs[i]->stream_index[j])
4249 } else if (*spec == '#') {
4252 sid = strtol(spec + 1, &endptr, 0);
4254 return st->id == sid;
4255 } else if (!*spec) /* empty specifier, matches everything */
4258 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4259 return AVERROR(EINVAL);
4262 int ff_generate_avci_extradata(AVStream *st)
4264 static const uint8_t avci100_1080p_extradata[] = {
4266 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4267 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4268 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4269 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4270 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4271 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4272 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4273 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4274 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4276 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4279 static const uint8_t avci100_1080i_extradata[] = {
4281 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4282 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4283 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4284 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4285 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4286 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4287 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4288 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4289 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4290 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4291 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4293 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4296 static const uint8_t avci50_1080i_extradata[] = {
4298 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4299 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4300 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4301 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4302 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4303 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4304 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4305 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4306 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4307 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4308 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4310 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4313 static const uint8_t avci100_720p_extradata[] = {
4315 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4316 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4317 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4318 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4319 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4320 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4321 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4322 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4323 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4324 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4326 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4330 const uint8_t *data = NULL;
4333 if (st->codec->width == 1920) {
4334 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4335 data = avci100_1080p_extradata;
4336 size = sizeof(avci100_1080p_extradata);
4338 data = avci100_1080i_extradata;
4339 size = sizeof(avci100_1080i_extradata);
4341 } else if (st->codec->width == 1440) {
4342 data = avci50_1080i_extradata;
4343 size = sizeof(avci50_1080i_extradata);
4344 } else if (st->codec->width == 1280) {
4345 data = avci100_720p_extradata;
4346 size = sizeof(avci100_720p_extradata);
4352 av_freep(&st->codec->extradata);
4353 if (ff_alloc_extradata(st->codec, size))
4354 return AVERROR(ENOMEM);
4355 memcpy(st->codec->extradata, data, size);