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->parse_queue_end)
942 return s->packet_buffer;
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->parse_queue ? s->parse_queue : s->packet_buffer;
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->parse_queue ? s->parse_queue : s->packet_buffer;
998 int64_t cur_dts= RELATIVE_TS_BASE;
1000 if(st->first_dts != AV_NOPTS_VALUE){
1001 cur_dts= st->first_dts;
1002 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1003 if(pktl->pkt.stream_index == stream_index){
1004 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1006 cur_dts -= duration;
1009 if(pktl && pktl->pkt.dts != st->first_dts) {
1010 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
1011 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1015 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1018 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1019 st->first_dts = cur_dts;
1020 }else if(st->cur_dts != RELATIVE_TS_BASE)
1023 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1024 if(pktl->pkt.stream_index != stream_index)
1026 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1027 && !pktl->pkt.duration){
1028 pktl->pkt.dts= cur_dts;
1029 if(!st->codec->has_b_frames)
1030 pktl->pkt.pts= cur_dts;
1031 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1032 pktl->pkt.duration = duration;
1035 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1038 st->cur_dts= cur_dts;
1041 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1042 AVCodecParserContext *pc, AVPacket *pkt)
1044 int num, den, presentation_delayed, delay, i;
1047 if (s->flags & AVFMT_FLAG_NOFILLIN)
1050 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1051 pkt->dts= AV_NOPTS_VALUE;
1053 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1054 && !st->codec->has_b_frames)
1055 //FIXME Set low_delay = 0 when has_b_frames = 1
1056 st->codec->has_b_frames = 1;
1058 /* do we have a video B-frame ? */
1059 delay= st->codec->has_b_frames;
1060 presentation_delayed = 0;
1062 /* XXX: need has_b_frame, but cannot get it if the codec is
1065 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1066 presentation_delayed = 1;
1068 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1069 st->pts_wrap_bits < 63 &&
1070 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1071 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1072 pkt->dts -= 1LL<<st->pts_wrap_bits;
1074 pkt->pts += 1LL<<st->pts_wrap_bits;
1077 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1078 // we take the conservative approach and discard both
1079 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1080 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1081 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1082 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1083 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1084 pkt->dts= AV_NOPTS_VALUE;
1087 if (pkt->duration == 0) {
1088 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1090 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1093 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1094 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1096 /* correct timestamps with byte offset if demuxers only have timestamps
1097 on packet boundaries */
1098 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1099 /* this will estimate bitrate based on this frame's duration and size */
1100 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1101 if(pkt->pts != AV_NOPTS_VALUE)
1103 if(pkt->dts != AV_NOPTS_VALUE)
1107 /* This may be redundant, but it should not hurt. */
1108 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1109 presentation_delayed = 1;
1111 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1112 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1113 /* interpolate PTS and DTS if they are not present */
1114 //We skip H264 currently because delay and has_b_frames are not reliably set
1115 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1116 if (presentation_delayed) {
1117 /* DTS = decompression timestamp */
1118 /* PTS = presentation timestamp */
1119 if (pkt->dts == AV_NOPTS_VALUE)
1120 pkt->dts = st->last_IP_pts;
1121 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1122 if (pkt->dts == AV_NOPTS_VALUE)
1123 pkt->dts = st->cur_dts;
1125 /* this is tricky: the dts must be incremented by the duration
1126 of the frame we are displaying, i.e. the last I- or P-frame */
1127 if (st->last_IP_duration == 0)
1128 st->last_IP_duration = pkt->duration;
1129 if(pkt->dts != AV_NOPTS_VALUE)
1130 st->cur_dts = pkt->dts + st->last_IP_duration;
1131 st->last_IP_duration = pkt->duration;
1132 st->last_IP_pts= pkt->pts;
1133 /* cannot compute PTS if not present (we can compute it only
1134 by knowing the future */
1135 } else if (pkt->pts != AV_NOPTS_VALUE ||
1136 pkt->dts != AV_NOPTS_VALUE ||
1138 int duration = pkt->duration;
1140 /* presentation is not delayed : PTS and DTS are the same */
1141 if (pkt->pts == AV_NOPTS_VALUE)
1142 pkt->pts = pkt->dts;
1143 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1145 if (pkt->pts == AV_NOPTS_VALUE)
1146 pkt->pts = st->cur_dts;
1147 pkt->dts = pkt->pts;
1148 if (pkt->pts != AV_NOPTS_VALUE)
1149 st->cur_dts = pkt->pts + duration;
1153 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1154 st->pts_buffer[0]= pkt->pts;
1155 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1156 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1157 if(pkt->dts == AV_NOPTS_VALUE)
1158 pkt->dts= st->pts_buffer[0];
1160 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1161 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1163 if(pkt->dts > st->cur_dts)
1164 st->cur_dts = pkt->dts;
1166 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1167 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1170 if (is_intra_only(st->codec))
1171 pkt->flags |= AV_PKT_FLAG_KEY;
1173 pkt->convergence_duration = pc->convergence_duration;
1176 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1179 AVPacketList *pktl = *pkt_buf;
1180 *pkt_buf = pktl->next;
1181 av_free_packet(&pktl->pkt);
1184 *pkt_buf_end = NULL;
1188 * Parse a packet, add all split parts to parse_queue
1190 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1192 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1194 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1195 AVStream *st = s->streams[stream_index];
1196 uint8_t *data = pkt ? pkt->data : NULL;
1197 int size = pkt ? pkt->size : 0;
1198 int ret = 0, got_output = 0;
1201 av_init_packet(&flush_pkt);
1204 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1205 // preserve 0-size sync packets
1206 compute_pkt_fields(s, st, st->parser, pkt);
1209 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1212 av_init_packet(&out_pkt);
1213 len = av_parser_parse2(st->parser, st->codec,
1214 &out_pkt.data, &out_pkt.size, data, size,
1215 pkt->pts, pkt->dts, pkt->pos);
1217 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1219 /* increment read pointer */
1223 got_output = !!out_pkt.size;
1228 if (pkt->side_data) {
1229 out_pkt.side_data = pkt->side_data;
1230 out_pkt.side_data_elems = pkt->side_data_elems;
1231 pkt->side_data = NULL;
1232 pkt->side_data_elems = 0;
1235 /* set the duration */
1236 out_pkt.duration = 0;
1237 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1238 if (st->codec->sample_rate > 0) {
1239 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1240 (AVRational){ 1, st->codec->sample_rate },
1244 } else if (st->codec->time_base.num != 0 &&
1245 st->codec->time_base.den != 0) {
1246 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1247 st->codec->time_base,
1252 out_pkt.stream_index = st->index;
1253 out_pkt.pts = st->parser->pts;
1254 out_pkt.dts = st->parser->dts;
1255 out_pkt.pos = st->parser->pos;
1257 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1258 out_pkt.pos = st->parser->frame_offset;
1260 if (st->parser->key_frame == 1 ||
1261 (st->parser->key_frame == -1 &&
1262 st->parser->pict_type == AV_PICTURE_TYPE_I))
1263 out_pkt.flags |= AV_PKT_FLAG_KEY;
1265 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1266 out_pkt.flags |= AV_PKT_FLAG_KEY;
1268 compute_pkt_fields(s, st, st->parser, &out_pkt);
1270 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1271 out_pkt.buf = pkt->buf;
1273 #if FF_API_DESTRUCT_PACKET
1274 FF_DISABLE_DEPRECATION_WARNINGS
1275 out_pkt.destruct = pkt->destruct;
1276 pkt->destruct = NULL;
1277 FF_ENABLE_DEPRECATION_WARNINGS
1280 if ((ret = av_dup_packet(&out_pkt)) < 0)
1283 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1284 av_free_packet(&out_pkt);
1285 ret = AVERROR(ENOMEM);
1291 /* end of the stream => close and free the parser */
1292 if (pkt == &flush_pkt) {
1293 av_parser_close(st->parser);
1298 av_free_packet(pkt);
1302 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1303 AVPacketList **pkt_buffer_end,
1307 av_assert0(*pkt_buffer);
1310 *pkt_buffer = pktl->next;
1312 *pkt_buffer_end = NULL;
1317 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1319 int ret = 0, i, got_packet = 0;
1321 av_init_packet(pkt);
1323 while (!got_packet && !s->parse_queue) {
1327 /* read next packet */
1328 ret = ff_read_packet(s, &cur_pkt);
1330 if (ret == AVERROR(EAGAIN))
1332 /* flush the parsers */
1333 for(i = 0; i < s->nb_streams; i++) {
1335 if (st->parser && st->need_parsing)
1336 parse_packet(s, NULL, st->index);
1338 /* all remaining packets are now in parse_queue =>
1339 * really terminate parsing */
1343 st = s->streams[cur_pkt.stream_index];
1345 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1346 cur_pkt.dts != AV_NOPTS_VALUE &&
1347 cur_pkt.pts < cur_pkt.dts) {
1348 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1349 cur_pkt.stream_index,
1350 av_ts2str(cur_pkt.pts),
1351 av_ts2str(cur_pkt.dts),
1354 if (s->debug & FF_FDEBUG_TS)
1355 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1356 cur_pkt.stream_index,
1357 av_ts2str(cur_pkt.pts),
1358 av_ts2str(cur_pkt.dts),
1363 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1364 st->parser = av_parser_init(st->codec->codec_id);
1366 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1367 "%s, packets or times may be invalid.\n",
1368 avcodec_get_name(st->codec->codec_id));
1369 /* no parser available: just output the raw packets */
1370 st->need_parsing = AVSTREAM_PARSE_NONE;
1371 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1372 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1373 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1374 st->parser->flags |= PARSER_FLAG_ONCE;
1375 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1376 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1380 if (!st->need_parsing || !st->parser) {
1381 /* no parsing needed: we just output the packet as is */
1383 compute_pkt_fields(s, st, NULL, pkt);
1384 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1385 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1386 ff_reduce_index(s, st->index);
1387 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1390 } else if (st->discard < AVDISCARD_ALL) {
1391 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1395 av_free_packet(&cur_pkt);
1397 if (pkt->flags & AV_PKT_FLAG_KEY)
1398 st->skip_to_keyframe = 0;
1399 if (st->skip_to_keyframe) {
1400 av_free_packet(&cur_pkt);
1408 if (!got_packet && s->parse_queue)
1409 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1412 AVStream *st = s->streams[pkt->stream_index];
1413 if (st->skip_samples) {
1414 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1416 AV_WL32(p, st->skip_samples);
1417 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1419 st->skip_samples = 0;
1423 if(ret >= 0 && !(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1424 av_packet_merge_side_data(pkt);
1426 if(s->debug & FF_FDEBUG_TS)
1427 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1429 av_ts2str(pkt->pts),
1430 av_ts2str(pkt->dts),
1438 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1440 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1446 ret = s->packet_buffer ?
1447 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1448 read_frame_internal(s, pkt);
1455 AVPacketList *pktl = s->packet_buffer;
1458 AVPacket *next_pkt = &pktl->pkt;
1460 if (next_pkt->dts != AV_NOPTS_VALUE) {
1461 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1462 // last dts seen for this stream. if any of packets following
1463 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1464 int64_t last_dts = next_pkt->dts;
1465 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1466 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1467 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1468 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1469 next_pkt->pts = pktl->pkt.dts;
1471 if (last_dts != AV_NOPTS_VALUE) {
1472 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1473 last_dts = pktl->pkt.dts;
1478 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1479 // Fixing the last reference frame had none pts issue (For MXF etc).
1480 // We only do this when
1482 // 2. we are not able to resolve a pts value for current packet.
1483 // 3. the packets for this stream at the end of the files had valid dts.
1484 next_pkt->pts = last_dts + next_pkt->duration;
1486 pktl = s->packet_buffer;
1489 /* read packet from packet buffer, if there is data */
1490 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1491 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1492 ret = read_from_packet_buffer(&s->packet_buffer,
1493 &s->packet_buffer_end, pkt);
1498 ret = read_frame_internal(s, pkt);
1500 if (pktl && ret != AVERROR(EAGAIN)) {
1507 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1508 &s->packet_buffer_end)) < 0)
1509 return AVERROR(ENOMEM);
1514 st = s->streams[pkt->stream_index];
1515 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1516 ff_reduce_index(s, st->index);
1517 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1520 if (is_relative(pkt->dts))
1521 pkt->dts -= RELATIVE_TS_BASE;
1522 if (is_relative(pkt->pts))
1523 pkt->pts -= RELATIVE_TS_BASE;
1528 /* XXX: suppress the packet queue */
1529 static void flush_packet_queue(AVFormatContext *s)
1531 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1532 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1533 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1535 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1538 /*******************************************************/
1541 int av_find_default_stream_index(AVFormatContext *s)
1543 int first_audio_index = -1;
1547 if (s->nb_streams <= 0)
1549 for(i = 0; i < s->nb_streams; i++) {
1551 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1552 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1555 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1556 first_audio_index = i;
1558 return first_audio_index >= 0 ? first_audio_index : 0;
1562 * Flush the frame reader.
1564 void ff_read_frame_flush(AVFormatContext *s)
1569 flush_packet_queue(s);
1571 /* for each stream, reset read state */
1572 for(i = 0; i < s->nb_streams; i++) {
1576 av_parser_close(st->parser);
1579 st->last_IP_pts = AV_NOPTS_VALUE;
1580 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1581 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1583 st->probe_packets = MAX_PROBE_PACKETS;
1585 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1586 st->pts_buffer[j]= AV_NOPTS_VALUE;
1590 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1594 for(i = 0; i < s->nb_streams; i++) {
1595 AVStream *st = s->streams[i];
1597 st->cur_dts = av_rescale(timestamp,
1598 st->time_base.den * (int64_t)ref_st->time_base.num,
1599 st->time_base.num * (int64_t)ref_st->time_base.den);
1603 void ff_reduce_index(AVFormatContext *s, int stream_index)
1605 AVStream *st= s->streams[stream_index];
1606 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1608 if((unsigned)st->nb_index_entries >= max_entries){
1610 for(i=0; 2*i<st->nb_index_entries; i++)
1611 st->index_entries[i]= st->index_entries[2*i];
1612 st->nb_index_entries= i;
1616 int ff_add_index_entry(AVIndexEntry **index_entries,
1617 int *nb_index_entries,
1618 unsigned int *index_entries_allocated_size,
1619 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1621 AVIndexEntry *entries, *ie;
1624 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1627 if(timestamp == AV_NOPTS_VALUE)
1628 return AVERROR(EINVAL);
1630 if (size < 0 || size > 0x3FFFFFFF)
1631 return AVERROR(EINVAL);
1633 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1634 timestamp -= RELATIVE_TS_BASE;
1636 entries = av_fast_realloc(*index_entries,
1637 index_entries_allocated_size,
1638 (*nb_index_entries + 1) *
1639 sizeof(AVIndexEntry));
1643 *index_entries= entries;
1645 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1648 index= (*nb_index_entries)++;
1649 ie= &entries[index];
1650 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1652 ie= &entries[index];
1653 if(ie->timestamp != timestamp){
1654 if(ie->timestamp <= timestamp)
1656 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1657 (*nb_index_entries)++;
1658 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1659 distance= ie->min_distance;
1663 ie->timestamp = timestamp;
1664 ie->min_distance= distance;
1671 int av_add_index_entry(AVStream *st,
1672 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1674 timestamp = wrap_timestamp(st, timestamp);
1675 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1676 &st->index_entries_allocated_size, pos,
1677 timestamp, size, distance, flags);
1680 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1681 int64_t wanted_timestamp, int flags)
1689 //optimize appending index entries at the end
1690 if(b && entries[b-1].timestamp < wanted_timestamp)
1695 timestamp = entries[m].timestamp;
1696 if(timestamp >= wanted_timestamp)
1698 if(timestamp <= wanted_timestamp)
1701 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1703 if(!(flags & AVSEEK_FLAG_ANY)){
1704 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1705 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1714 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1717 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1718 wanted_timestamp, flags);
1721 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1722 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1724 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1725 if (stream_index >= 0)
1726 ts = wrap_timestamp(s->streams[stream_index], ts);
1730 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1732 AVInputFormat *avif= s->iformat;
1733 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1734 int64_t ts_min, ts_max, ts;
1739 if (stream_index < 0)
1742 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1745 ts_min= AV_NOPTS_VALUE;
1746 pos_limit= -1; //gcc falsely says it may be uninitialized
1748 st= s->streams[stream_index];
1749 if(st->index_entries){
1752 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()
1753 index= FFMAX(index, 0);
1754 e= &st->index_entries[index];
1756 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1758 ts_min= e->timestamp;
1759 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1760 pos_min, av_ts2str(ts_min));
1762 av_assert1(index==0);
1765 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1766 av_assert0(index < st->nb_index_entries);
1768 e= &st->index_entries[index];
1769 av_assert1(e->timestamp >= target_ts);
1771 ts_max= e->timestamp;
1772 pos_limit= pos_max - e->min_distance;
1773 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1774 pos_max, pos_limit, av_ts2str(ts_max));
1778 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1783 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1786 ff_read_frame_flush(s);
1787 ff_update_cur_dts(s, st, ts);
1792 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1793 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1796 int64_t limit, ts_max;
1797 int64_t filesize = avio_size(s->pb);
1798 int64_t pos_max = filesize - 1;
1801 pos_max = FFMAX(0, (pos_max) - step);
1802 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1804 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1805 if (ts_max == AV_NOPTS_VALUE)
1809 int64_t tmp_pos = pos_max + 1;
1810 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1811 if(tmp_ts == AV_NOPTS_VALUE)
1813 av_assert0(tmp_pos > pos_max);
1816 if(tmp_pos >= filesize)
1828 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1829 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1830 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1831 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1838 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1840 if(ts_min == AV_NOPTS_VALUE){
1841 pos_min = s->data_offset;
1842 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1843 if (ts_min == AV_NOPTS_VALUE)
1847 if(ts_min >= target_ts){
1852 if(ts_max == AV_NOPTS_VALUE){
1853 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1858 if(ts_max <= target_ts){
1863 if(ts_min > ts_max){
1865 }else if(ts_min == ts_max){
1870 while (pos_min < pos_limit) {
1871 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1872 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1873 assert(pos_limit <= pos_max);
1876 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1877 // interpolate position (better than dichotomy)
1878 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1879 + pos_min - approximate_keyframe_distance;
1880 }else if(no_change==1){
1881 // bisection, if interpolation failed to change min or max pos last time
1882 pos = (pos_min + pos_limit)>>1;
1884 /* linear search if bisection failed, can only happen if there
1885 are very few or no keyframes between min/max */
1890 else if(pos > pos_limit)
1894 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1899 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1900 pos_min, pos, pos_max,
1901 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1902 pos_limit, start_pos, no_change);
1903 if(ts == AV_NOPTS_VALUE){
1904 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1907 assert(ts != AV_NOPTS_VALUE);
1908 if (target_ts <= ts) {
1909 pos_limit = start_pos - 1;
1913 if (target_ts >= ts) {
1919 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1920 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1923 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1925 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1926 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1927 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1933 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1934 int64_t pos_min, pos_max;
1936 pos_min = s->data_offset;
1937 pos_max = avio_size(s->pb) - 1;
1939 if (pos < pos_min) pos= pos_min;
1940 else if(pos > pos_max) pos= pos_max;
1942 avio_seek(s->pb, pos, SEEK_SET);
1944 s->io_repositioned = 1;
1949 static int seek_frame_generic(AVFormatContext *s,
1950 int stream_index, int64_t timestamp, int flags)
1957 st = s->streams[stream_index];
1959 index = av_index_search_timestamp(st, timestamp, flags);
1961 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1964 if(index < 0 || index==st->nb_index_entries-1){
1968 if(st->nb_index_entries){
1969 av_assert0(st->index_entries);
1970 ie= &st->index_entries[st->nb_index_entries-1];
1971 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1973 ff_update_cur_dts(s, st, ie->timestamp);
1975 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1981 read_status = av_read_frame(s, &pkt);
1982 } while (read_status == AVERROR(EAGAIN));
1983 if (read_status < 0)
1985 av_free_packet(&pkt);
1986 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1987 if(pkt.flags & AV_PKT_FLAG_KEY)
1989 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1990 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);
1995 index = av_index_search_timestamp(st, timestamp, flags);
2000 ff_read_frame_flush(s);
2001 if (s->iformat->read_seek){
2002 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2005 ie = &st->index_entries[index];
2006 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2008 ff_update_cur_dts(s, st, ie->timestamp);
2013 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2014 int64_t timestamp, int flags)
2019 if (flags & AVSEEK_FLAG_BYTE) {
2020 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2022 ff_read_frame_flush(s);
2023 return seek_frame_byte(s, stream_index, timestamp, flags);
2026 if(stream_index < 0){
2027 stream_index= av_find_default_stream_index(s);
2028 if(stream_index < 0)
2031 st= s->streams[stream_index];
2032 /* timestamp for default must be expressed in AV_TIME_BASE units */
2033 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2036 /* first, we try the format specific seek */
2037 if (s->iformat->read_seek) {
2038 ff_read_frame_flush(s);
2039 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2046 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2047 ff_read_frame_flush(s);
2048 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2049 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2050 ff_read_frame_flush(s);
2051 return seek_frame_generic(s, stream_index, timestamp, flags);
2057 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2061 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2062 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2063 if ((flags & AVSEEK_FLAG_BACKWARD))
2067 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2068 flags & ~AVSEEK_FLAG_BACKWARD);
2071 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2074 ret = avformat_queue_attached_pictures(s);
2079 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2081 if(min_ts > ts || max_ts < ts)
2083 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2084 return AVERROR(EINVAL);
2087 flags |= AVSEEK_FLAG_ANY;
2088 flags &= ~AVSEEK_FLAG_BACKWARD;
2090 if (s->iformat->read_seek2) {
2092 ff_read_frame_flush(s);
2094 if (stream_index == -1 && s->nb_streams == 1) {
2095 AVRational time_base = s->streams[0]->time_base;
2096 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2097 min_ts = av_rescale_rnd(min_ts, time_base.den,
2098 time_base.num * (int64_t)AV_TIME_BASE,
2099 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2100 max_ts = av_rescale_rnd(max_ts, time_base.den,
2101 time_base.num * (int64_t)AV_TIME_BASE,
2102 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2105 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2108 ret = avformat_queue_attached_pictures(s);
2112 if(s->iformat->read_timestamp){
2113 //try to seek via read_timestamp()
2116 // Fall back on old API if new is not implemented but old is.
2117 // Note the old API has somewhat different semantics.
2118 if (s->iformat->read_seek || 1) {
2119 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2120 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2121 if (ret<0 && ts != min_ts && max_ts != ts) {
2122 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2124 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2129 // try some generic seek like seek_frame_generic() but with new ts semantics
2130 return -1; //unreachable
2133 /*******************************************************/
2136 * Return TRUE if the stream has accurate duration in any stream.
2138 * @return TRUE if the stream has accurate duration for at least one component.
2140 static int has_duration(AVFormatContext *ic)
2145 for(i = 0;i < ic->nb_streams; i++) {
2146 st = ic->streams[i];
2147 if (st->duration != AV_NOPTS_VALUE)
2150 if (ic->duration != AV_NOPTS_VALUE)
2156 * Estimate the stream timings from the one of each components.
2158 * Also computes the global bitrate if possible.
2160 static void update_stream_timings(AVFormatContext *ic)
2162 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2163 int64_t duration, duration1, filesize;
2168 start_time = INT64_MAX;
2169 start_time_text = INT64_MAX;
2170 end_time = INT64_MIN;
2171 duration = INT64_MIN;
2172 for(i = 0;i < ic->nb_streams; i++) {
2173 st = ic->streams[i];
2174 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2175 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2176 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2177 if (start_time1 < start_time_text)
2178 start_time_text = start_time1;
2180 start_time = FFMIN(start_time, start_time1);
2181 end_time1 = AV_NOPTS_VALUE;
2182 if (st->duration != AV_NOPTS_VALUE) {
2183 end_time1 = start_time1
2184 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2185 end_time = FFMAX(end_time, end_time1);
2187 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2188 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2189 p->start_time = start_time1;
2190 if(p->end_time < end_time1)
2191 p->end_time = end_time1;
2194 if (st->duration != AV_NOPTS_VALUE) {
2195 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2196 duration = FFMAX(duration, duration1);
2199 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2200 start_time = start_time_text;
2201 else if(start_time > start_time_text)
2202 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2204 if (start_time != INT64_MAX) {
2205 ic->start_time = start_time;
2206 if (end_time != INT64_MIN) {
2207 if (ic->nb_programs) {
2208 for (i=0; i<ic->nb_programs; i++) {
2209 p = ic->programs[i];
2210 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2211 duration = FFMAX(duration, p->end_time - p->start_time);
2214 duration = FFMAX(duration, end_time - start_time);
2217 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2218 ic->duration = duration;
2220 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2221 /* compute the bitrate */
2222 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2223 (double)ic->duration;
2224 if (bitrate >= 0 && bitrate <= INT_MAX)
2225 ic->bit_rate = bitrate;
2229 static void fill_all_stream_timings(AVFormatContext *ic)
2234 update_stream_timings(ic);
2235 for(i = 0;i < ic->nb_streams; i++) {
2236 st = ic->streams[i];
2237 if (st->start_time == AV_NOPTS_VALUE) {
2238 if(ic->start_time != AV_NOPTS_VALUE)
2239 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2240 if(ic->duration != AV_NOPTS_VALUE)
2241 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2246 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2248 int64_t filesize, duration;
2249 int i, show_warning = 0;
2252 /* if bit_rate is already set, we believe it */
2253 if (ic->bit_rate <= 0) {
2255 for(i=0;i<ic->nb_streams;i++) {
2256 st = ic->streams[i];
2257 if (st->codec->bit_rate > 0) {
2258 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2262 bit_rate += st->codec->bit_rate;
2265 ic->bit_rate = bit_rate;
2268 /* if duration is already set, we believe it */
2269 if (ic->duration == AV_NOPTS_VALUE &&
2270 ic->bit_rate != 0) {
2271 filesize = ic->pb ? avio_size(ic->pb) : 0;
2273 for(i = 0; i < ic->nb_streams; i++) {
2274 st = ic->streams[i];
2275 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2276 && st->duration == AV_NOPTS_VALUE) {
2277 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2278 st->duration = duration;
2285 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2288 #define DURATION_MAX_READ_SIZE 250000LL
2289 #define DURATION_MAX_RETRY 4
2291 /* only usable for MPEG-PS streams */
2292 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2294 AVPacket pkt1, *pkt = &pkt1;
2296 int read_size, i, ret;
2298 int64_t filesize, offset, duration;
2301 /* flush packet queue */
2302 flush_packet_queue(ic);
2304 for (i=0; i<ic->nb_streams; i++) {
2305 st = ic->streams[i];
2306 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2307 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2310 av_parser_close(st->parser);
2315 /* estimate the end time (duration) */
2316 /* XXX: may need to support wrapping */
2317 filesize = ic->pb ? avio_size(ic->pb) : 0;
2318 end_time = AV_NOPTS_VALUE;
2320 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2324 avio_seek(ic->pb, offset, SEEK_SET);
2327 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2331 ret = ff_read_packet(ic, pkt);
2332 } while(ret == AVERROR(EAGAIN));
2335 read_size += pkt->size;
2336 st = ic->streams[pkt->stream_index];
2337 if (pkt->pts != AV_NOPTS_VALUE &&
2338 (st->start_time != AV_NOPTS_VALUE ||
2339 st->first_dts != AV_NOPTS_VALUE)) {
2340 duration = end_time = pkt->pts;
2341 if (st->start_time != AV_NOPTS_VALUE)
2342 duration -= st->start_time;
2344 duration -= st->first_dts;
2346 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2347 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2348 st->duration = duration;
2349 st->info->last_duration = duration;
2352 av_free_packet(pkt);
2354 }while( end_time==AV_NOPTS_VALUE
2355 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2356 && ++retry <= DURATION_MAX_RETRY);
2358 fill_all_stream_timings(ic);
2360 avio_seek(ic->pb, old_offset, SEEK_SET);
2361 for (i=0; i<ic->nb_streams; i++) {
2363 st->cur_dts= st->first_dts;
2364 st->last_IP_pts = AV_NOPTS_VALUE;
2368 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2372 /* get the file size, if possible */
2373 if (ic->iformat->flags & AVFMT_NOFILE) {
2376 file_size = avio_size(ic->pb);
2377 file_size = FFMAX(0, file_size);
2380 if ((!strcmp(ic->iformat->name, "mpeg") ||
2381 !strcmp(ic->iformat->name, "mpegts")) &&
2382 file_size && ic->pb->seekable) {
2383 /* get accurate estimate from the PTSes */
2384 estimate_timings_from_pts(ic, old_offset);
2385 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2386 } else if (has_duration(ic)) {
2387 /* at least one component has timings - we use them for all
2389 fill_all_stream_timings(ic);
2390 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2392 /* less precise: use bitrate info */
2393 estimate_timings_from_bit_rate(ic);
2394 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2396 update_stream_timings(ic);
2400 AVStream av_unused *st;
2401 for(i = 0;i < ic->nb_streams; i++) {
2402 st = ic->streams[i];
2403 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2404 (double) st->start_time / AV_TIME_BASE,
2405 (double) st->duration / AV_TIME_BASE);
2407 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2408 (double) ic->start_time / AV_TIME_BASE,
2409 (double) ic->duration / AV_TIME_BASE,
2410 ic->bit_rate / 1000);
2414 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2416 AVCodecContext *avctx = st->codec;
2418 #define FAIL(errmsg) do { \
2420 *errmsg_ptr = errmsg; \
2424 switch (avctx->codec_type) {
2425 case AVMEDIA_TYPE_AUDIO:
2426 if (!avctx->frame_size && determinable_frame_size(avctx))
2427 FAIL("unspecified frame size");
2428 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2429 FAIL("unspecified sample format");
2430 if (!avctx->sample_rate)
2431 FAIL("unspecified sample rate");
2432 if (!avctx->channels)
2433 FAIL("unspecified number of channels");
2434 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2435 FAIL("no decodable DTS frames");
2437 case AVMEDIA_TYPE_VIDEO:
2439 FAIL("unspecified size");
2440 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2441 FAIL("unspecified pixel format");
2442 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2443 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2444 FAIL("no frame in rv30/40 and no sar");
2446 case AVMEDIA_TYPE_SUBTITLE:
2447 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2448 FAIL("unspecified size");
2450 case AVMEDIA_TYPE_DATA:
2451 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2454 if (avctx->codec_id == AV_CODEC_ID_NONE)
2455 FAIL("unknown codec");
2459 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2460 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options)
2462 const AVCodec *codec;
2463 int got_picture = 1, ret = 0;
2464 AVFrame *frame = av_frame_alloc();
2465 AVSubtitle subtitle;
2466 AVPacket pkt = *avpkt;
2469 return AVERROR(ENOMEM);
2471 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2472 AVDictionary *thread_opt = NULL;
2474 codec = find_decoder(s, st, st->codec->codec_id);
2477 st->info->found_decoder = -1;
2482 /* force thread count to 1 since the h264 decoder will not extract SPS
2483 * and PPS to extradata during multi-threaded decoding */
2484 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2485 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2487 av_dict_free(&thread_opt);
2489 st->info->found_decoder = -1;
2492 st->info->found_decoder = 1;
2493 } else if (!st->info->found_decoder)
2494 st->info->found_decoder = 1;
2496 if (st->info->found_decoder < 0) {
2501 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2503 (!has_codec_parameters(st, NULL) ||
2504 !has_decode_delay_been_guessed(st) ||
2505 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2507 switch(st->codec->codec_type) {
2508 case AVMEDIA_TYPE_VIDEO:
2509 ret = avcodec_decode_video2(st->codec, frame,
2510 &got_picture, &pkt);
2512 case AVMEDIA_TYPE_AUDIO:
2513 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2515 case AVMEDIA_TYPE_SUBTITLE:
2516 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2517 &got_picture, &pkt);
2525 st->nb_decoded_frames++;
2532 if(!pkt.data && !got_picture)
2536 av_frame_free(&frame);
2540 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2542 while (tags->id != AV_CODEC_ID_NONE) {
2550 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2553 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2554 if(tag == tags[i].tag)
2557 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2558 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2561 return AV_CODEC_ID_NONE;
2564 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2568 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2569 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2570 default: return AV_CODEC_ID_NONE;
2575 if (sflags & (1 << (bps - 1))) {
2577 case 1: return AV_CODEC_ID_PCM_S8;
2578 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2579 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2580 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2581 default: return AV_CODEC_ID_NONE;
2585 case 1: return AV_CODEC_ID_PCM_U8;
2586 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2587 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2588 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2589 default: return AV_CODEC_ID_NONE;
2595 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2598 if (!av_codec_get_tag2(tags, id, &tag))
2603 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2607 for(i=0; tags && tags[i]; i++){
2608 const AVCodecTag *codec_tags = tags[i];
2609 while (codec_tags->id != AV_CODEC_ID_NONE) {
2610 if (codec_tags->id == id) {
2611 *tag = codec_tags->tag;
2620 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2623 for(i=0; tags && tags[i]; i++){
2624 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2625 if(id!=AV_CODEC_ID_NONE) return id;
2627 return AV_CODEC_ID_NONE;
2630 static void compute_chapters_end(AVFormatContext *s)
2633 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2635 for (i = 0; i < s->nb_chapters; i++)
2636 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2637 AVChapter *ch = s->chapters[i];
2638 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2641 for (j = 0; j < s->nb_chapters; j++) {
2642 AVChapter *ch1 = s->chapters[j];
2643 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2644 if (j != i && next_start > ch->start && next_start < end)
2647 ch->end = (end == INT64_MAX) ? ch->start : end;
2651 static int get_std_framerate(int i){
2652 if(i<60*12) return (i+1)*1001;
2653 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2657 * Is the time base unreliable.
2658 * This is a heuristic to balance between quick acceptance of the values in
2659 * the headers vs. some extra checks.
2660 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2661 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2662 * And there are "variable" fps files this needs to detect as well.
2664 static int tb_unreliable(AVCodecContext *c){
2665 if( c->time_base.den >= 101L*c->time_base.num
2666 || c->time_base.den < 5L*c->time_base.num
2667 /* || c->codec_tag == AV_RL32("DIVX")
2668 || c->codec_tag == AV_RL32("XVID")*/
2669 || c->codec_tag == AV_RL32("mp4v")
2670 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2671 || c->codec_id == AV_CODEC_ID_H264
2677 #if FF_API_FORMAT_PARAMETERS
2678 int av_find_stream_info(AVFormatContext *ic)
2680 return avformat_find_stream_info(ic, NULL);
2684 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2688 if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
2689 avctx->extradata_size = 0;
2690 return AVERROR(EINVAL);
2692 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2693 if (avctx->extradata) {
2694 memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2695 avctx->extradata_size = size;
2698 avctx->extradata_size = 0;
2699 ret = AVERROR(ENOMEM);
2704 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2707 int64_t last = st->info->last_dts;
2709 if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2710 && ts - (uint64_t)last < INT64_MAX){
2711 double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2712 int64_t duration= ts - last;
2714 if (!st->info->duration_error)
2715 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2716 if (!st->info->duration_error)
2717 return AVERROR(ENOMEM);
2719 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2720 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2721 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2722 if (st->info->duration_error[0][1][i] < 1e10) {
2723 int framerate= get_std_framerate(i);
2724 double sdts= dts*framerate/(1001*12);
2726 int64_t ticks= llrint(sdts+j*0.5);
2727 double error= sdts - ticks + j*0.5;
2728 st->info->duration_error[j][0][i] += error;
2729 st->info->duration_error[j][1][i] += error*error;
2733 st->info->duration_count++;
2734 st->info->rfps_duration_sum += duration;
2736 if (st->info->duration_count % 10 == 0) {
2737 int n = st->info->duration_count;
2738 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2739 if (st->info->duration_error[0][1][i] < 1e10) {
2740 double a0 = st->info->duration_error[0][0][i] / n;
2741 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2742 double a1 = st->info->duration_error[1][0][i] / n;
2743 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
2744 if (error0 > 0.04 && error1 > 0.04) {
2745 st->info->duration_error[0][1][i] = 2e10;
2746 st->info->duration_error[1][1][i] = 2e10;
2752 // ignore the first 4 values, they might have some random jitter
2753 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
2754 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2756 if (ts != AV_NOPTS_VALUE)
2757 st->info->last_dts = ts;
2762 void ff_rfps_calculate(AVFormatContext *ic)
2766 for (i = 0; i<ic->nb_streams; i++) {
2767 AVStream *st = ic->streams[i];
2769 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2771 // the check for tb_unreliable() is not completely correct, since this is not about handling
2772 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2773 // ipmovie.c produces.
2774 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)
2775 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);
2776 if (st->info->duration_count>1 && !st->r_frame_rate.num
2777 && tb_unreliable(st->codec)) {
2779 double best_error= 0.01;
2781 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2784 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2786 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2789 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
2793 int n= st->info->duration_count;
2794 double a= st->info->duration_error[k][0][j] / n;
2795 double error= st->info->duration_error[k][1][j]/n - a*a;
2797 if(error < best_error && best_error> 0.000000001){
2799 num = get_std_framerate(j);
2802 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2805 // do not increase frame rate by more than 1 % in order to match a standard rate.
2806 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2807 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2810 av_freep(&st->info->duration_error);
2811 st->info->last_dts = AV_NOPTS_VALUE;
2812 st->info->duration_count = 0;
2813 st->info->rfps_duration_sum = 0;
2817 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2819 int i, count, ret = 0, j;
2822 AVPacket pkt1, *pkt;
2823 int64_t old_offset = avio_tell(ic->pb);
2824 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2825 int flush_codecs = ic->probesize > 0;
2828 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
2829 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
2831 for(i=0;i<ic->nb_streams;i++) {
2832 const AVCodec *codec;
2833 AVDictionary *thread_opt = NULL;
2834 st = ic->streams[i];
2836 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2837 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2838 /* if(!st->time_base.num)
2840 if(!st->codec->time_base.num)
2841 st->codec->time_base= st->time_base;
2843 //only for the split stuff
2844 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2845 st->parser = av_parser_init(st->codec->codec_id);
2847 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2848 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2849 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2850 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2852 } else if (st->need_parsing) {
2853 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2854 "%s, packets or times may be invalid.\n",
2855 avcodec_get_name(st->codec->codec_id));
2858 codec = find_decoder(ic, st, st->codec->codec_id);
2860 /* force thread count to 1 since the h264 decoder will not extract SPS
2861 * and PPS to extradata during multi-threaded decoding */
2862 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2864 /* Ensure that subtitle_header is properly set. */
2865 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2866 && codec && !st->codec->codec) {
2867 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2868 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2871 //try to just open decoders, in case this is enough to get parameters
2872 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2873 if (codec && !st->codec->codec)
2874 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2875 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2878 av_dict_free(&thread_opt);
2881 for (i=0; i<ic->nb_streams; i++) {
2882 #if FF_API_R_FRAME_RATE
2883 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2885 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2886 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2892 if (ff_check_interrupt(&ic->interrupt_callback)){
2894 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2898 /* check if one codec still needs to be handled */
2899 for(i=0;i<ic->nb_streams;i++) {
2900 int fps_analyze_framecount = 20;
2902 st = ic->streams[i];
2903 if (!has_codec_parameters(st, NULL))
2905 /* if the timebase is coarse (like the usual millisecond precision
2906 of mkv), we need to analyze more frames to reliably arrive at
2908 if (av_q2d(st->time_base) > 0.0005)
2909 fps_analyze_framecount *= 2;
2910 if (ic->fps_probe_size >= 0)
2911 fps_analyze_framecount = ic->fps_probe_size;
2912 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2913 fps_analyze_framecount = 0;
2914 /* variable fps and no guess at the real fps */
2915 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2916 && st->info->duration_count < fps_analyze_framecount
2917 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2919 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2921 if (st->first_dts == AV_NOPTS_VALUE &&
2922 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2923 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2926 if (i == ic->nb_streams) {
2927 /* NOTE: if the format has no header, then we need to read
2928 some packets to get most of the streams, so we cannot
2930 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2931 /* if we found the info for all the codecs, we can stop */
2933 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2938 /* we did not get all the codec info, but we read too much data */
2939 if (read_size >= ic->probesize) {
2941 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2942 for (i = 0; i < ic->nb_streams; i++)
2943 if (!ic->streams[i]->r_frame_rate.num &&
2944 ic->streams[i]->info->duration_count <= 1 &&
2945 strcmp(ic->iformat->name, "image2"))
2946 av_log(ic, AV_LOG_WARNING,
2947 "Stream #%d: not enough frames to estimate rate; "
2948 "consider increasing probesize\n", i);
2952 /* NOTE: a new stream can be added there if no header in file
2953 (AVFMTCTX_NOHEADER) */
2954 ret = read_frame_internal(ic, &pkt1);
2955 if (ret == AVERROR(EAGAIN))
2963 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2964 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2966 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2967 &ic->packet_buffer_end);
2969 ret = AVERROR(ENOMEM);
2970 goto find_stream_info_err;
2972 if ((ret = av_dup_packet(pkt)) < 0)
2973 goto find_stream_info_err;
2976 st = ic->streams[pkt->stream_index];
2977 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2978 read_size += pkt->size;
2980 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2981 /* check for non-increasing dts */
2982 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2983 st->info->fps_last_dts >= pkt->dts) {
2984 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2985 "packet %d with DTS %"PRId64", packet %d with DTS "
2986 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2987 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2988 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2990 /* check for a discontinuity in dts - if the difference in dts
2991 * is more than 1000 times the average packet duration in the sequence,
2992 * we treat it as a discontinuity */
2993 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2994 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2995 (pkt->dts - st->info->fps_last_dts) / 1000 >
2996 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2997 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2998 "packet %d with DTS %"PRId64", packet %d with DTS "
2999 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3000 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3001 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3004 /* update stored dts values */
3005 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3006 st->info->fps_first_dts = pkt->dts;
3007 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3009 st->info->fps_last_dts = pkt->dts;
3010 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3012 if (st->codec_info_nb_frames>1) {
3014 if (st->time_base.den > 0)
3015 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3016 if (st->avg_frame_rate.num > 0)
3017 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3020 && st->codec_info_nb_frames>30
3021 && st->info->fps_first_dts != AV_NOPTS_VALUE
3022 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3023 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3025 if (t >= ic->max_analyze_duration) {
3026 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
3029 if (pkt->duration) {
3030 st->info->codec_info_duration += pkt->duration;
3031 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
3034 #if FF_API_R_FRAME_RATE
3035 ff_rfps_add_frame(ic, st, pkt->dts);
3037 if(st->parser && st->parser->parser->split && !st->codec->extradata){
3038 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
3039 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3040 if (ff_alloc_extradata(st->codec, i))
3041 return AVERROR(ENOMEM);
3042 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
3046 /* if still no information, we try to open the codec and to
3047 decompress the frame. We try to avoid that in most cases as
3048 it takes longer and uses more memory. For MPEG-4, we need to
3049 decompress for QuickTime.
3051 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3052 least one frame of codec data, this makes sure the codec initializes
3053 the channel configuration and does not only trust the values from the container.
3055 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
3057 st->codec_info_nb_frames++;
3062 AVPacket empty_pkt = { 0 };
3064 av_init_packet(&empty_pkt);
3066 for(i=0;i<ic->nb_streams;i++) {
3068 st = ic->streams[i];
3070 /* flush the decoders */
3071 if (st->info->found_decoder == 1) {
3073 err = try_decode_frame(ic, st, &empty_pkt,
3074 (options && i < orig_nb_streams) ?
3075 &options[i] : NULL);
3076 } while (err > 0 && !has_codec_parameters(st, NULL));
3079 av_log(ic, AV_LOG_INFO,
3080 "decoding for stream %d failed\n", st->index);
3086 // close codecs which were opened in try_decode_frame()
3087 for(i=0;i<ic->nb_streams;i++) {
3088 st = ic->streams[i];
3089 avcodec_close(st->codec);
3092 ff_rfps_calculate(ic);
3094 for(i=0;i<ic->nb_streams;i++) {
3095 st = ic->streams[i];
3096 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3097 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3098 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3099 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3100 st->codec->codec_tag= tag;
3103 /* estimate average framerate if not set by demuxer */
3104 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3106 double best_error = 0.01;
3108 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3109 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3110 st->info->codec_info_duration < 0)
3112 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3113 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3114 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3116 /* round guessed framerate to a "standard" framerate if it's
3117 * within 1% of the original estimate*/
3118 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3119 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3120 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3122 if (error < best_error) {
3124 best_fps = std_fps.num;
3128 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3129 best_fps, 12*1001, INT_MAX);
3133 if (!st->r_frame_rate.num){
3134 if( st->codec->time_base.den * (int64_t)st->time_base.num
3135 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3136 st->r_frame_rate.num = st->codec->time_base.den;
3137 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3139 st->r_frame_rate.num = st->time_base.den;
3140 st->r_frame_rate.den = st->time_base.num;
3143 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3144 if(!st->codec->bits_per_coded_sample)
3145 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3146 // set stream disposition based on audio service type
3147 switch (st->codec->audio_service_type) {
3148 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3149 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3150 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3151 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3152 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3153 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3154 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3155 st->disposition = AV_DISPOSITION_COMMENT; break;
3156 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3157 st->disposition = AV_DISPOSITION_KARAOKE; break;
3163 estimate_timings(ic, old_offset);
3165 if (ret >= 0 && ic->nb_streams)
3166 ret = -1; /* we could not have all the codec parameters before EOF */
3167 for(i=0;i<ic->nb_streams;i++) {
3169 st = ic->streams[i];
3170 if (!has_codec_parameters(st, &errmsg)) {
3172 avcodec_string(buf, sizeof(buf), st->codec, 0);
3173 av_log(ic, AV_LOG_WARNING,
3174 "Could not find codec parameters for stream %d (%s): %s\n"
3175 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3182 compute_chapters_end(ic);
3184 find_stream_info_err:
3185 for (i=0; i < ic->nb_streams; i++) {
3186 st = ic->streams[i];
3187 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3188 ic->streams[i]->codec->thread_count = 0;
3190 av_freep(&st->info->duration_error);
3191 av_freep(&ic->streams[i]->info);
3194 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3195 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3199 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3203 for (i = 0; i < ic->nb_programs; i++) {
3204 if (ic->programs[i] == last) {
3208 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3209 if (ic->programs[i]->stream_index[j] == s)
3210 return ic->programs[i];
3216 int av_find_best_stream(AVFormatContext *ic,
3217 enum AVMediaType type,
3218 int wanted_stream_nb,
3220 AVCodec **decoder_ret,
3223 int i, nb_streams = ic->nb_streams;
3224 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3225 unsigned *program = NULL;
3226 AVCodec *decoder = NULL, *best_decoder = NULL;
3228 if (related_stream >= 0 && wanted_stream_nb < 0) {
3229 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3231 program = p->stream_index;
3232 nb_streams = p->nb_stream_indexes;
3235 for (i = 0; i < nb_streams; i++) {
3236 int real_stream_index = program ? program[i] : i;
3237 AVStream *st = ic->streams[real_stream_index];
3238 AVCodecContext *avctx = st->codec;
3239 if (avctx->codec_type != type)
3241 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3243 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3246 decoder = find_decoder(ic, st, st->codec->codec_id);
3249 ret = AVERROR_DECODER_NOT_FOUND;
3253 count = st->codec_info_nb_frames;
3254 bitrate = avctx->bit_rate;
3255 multiframe = FFMIN(5, count);
3256 if ((best_multiframe > multiframe) ||
3257 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3258 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3261 best_bitrate = bitrate;
3262 best_multiframe = multiframe;
3263 ret = real_stream_index;
3264 best_decoder = decoder;
3265 if (program && i == nb_streams - 1 && ret < 0) {
3267 nb_streams = ic->nb_streams;
3268 i = 0; /* no related stream found, try again with everything */
3272 *decoder_ret = best_decoder;
3276 /*******************************************************/
3278 int av_read_play(AVFormatContext *s)
3280 if (s->iformat->read_play)
3281 return s->iformat->read_play(s);
3283 return avio_pause(s->pb, 0);
3284 return AVERROR(ENOSYS);
3287 int av_read_pause(AVFormatContext *s)
3289 if (s->iformat->read_pause)
3290 return s->iformat->read_pause(s);
3292 return avio_pause(s->pb, 1);
3293 return AVERROR(ENOSYS);
3296 void ff_free_stream(AVFormatContext *s, AVStream *st){
3297 av_assert0(s->nb_streams>0);
3298 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3301 av_parser_close(st->parser);
3303 if (st->attached_pic.data)
3304 av_free_packet(&st->attached_pic);
3305 av_dict_free(&st->metadata);
3306 av_freep(&st->probe_data.buf);
3307 av_freep(&st->index_entries);
3308 av_freep(&st->codec->extradata);
3309 av_freep(&st->codec->subtitle_header);
3310 av_freep(&st->codec);
3311 av_freep(&st->priv_data);
3313 av_freep(&st->info->duration_error);
3314 av_freep(&st->info);
3315 av_freep(&s->streams[ --s->nb_streams ]);
3318 void avformat_free_context(AVFormatContext *s)
3326 if (s->iformat && s->iformat->priv_class && s->priv_data)
3327 av_opt_free(s->priv_data);
3329 for(i=s->nb_streams-1; i>=0; i--) {
3330 ff_free_stream(s, s->streams[i]);
3332 for(i=s->nb_programs-1; i>=0; i--) {
3333 av_dict_free(&s->programs[i]->metadata);
3334 av_freep(&s->programs[i]->stream_index);
3335 av_freep(&s->programs[i]);
3337 av_freep(&s->programs);
3338 av_freep(&s->priv_data);
3339 while(s->nb_chapters--) {
3340 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3341 av_freep(&s->chapters[s->nb_chapters]);
3343 av_freep(&s->chapters);
3344 av_dict_free(&s->metadata);
3345 av_freep(&s->streams);
3349 #if FF_API_CLOSE_INPUT_FILE
3350 void av_close_input_file(AVFormatContext *s)
3352 avformat_close_input(&s);
3356 void avformat_close_input(AVFormatContext **ps)
3367 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3368 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3371 flush_packet_queue(s);
3374 if (s->iformat->read_close)
3375 s->iformat->read_close(s);
3378 avformat_free_context(s);
3385 #if FF_API_NEW_STREAM
3386 AVStream *av_new_stream(AVFormatContext *s, int id)
3388 AVStream *st = avformat_new_stream(s, NULL);
3395 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3401 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3403 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3406 s->streams = streams;
3408 st = av_mallocz(sizeof(AVStream));
3411 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3415 st->info->last_dts = AV_NOPTS_VALUE;
3417 st->codec = avcodec_alloc_context3(c);
3419 /* no default bitrate if decoding */
3420 st->codec->bit_rate = 0;
3422 st->index = s->nb_streams;
3423 st->start_time = AV_NOPTS_VALUE;
3424 st->duration = AV_NOPTS_VALUE;
3425 /* we set the current DTS to 0 so that formats without any timestamps
3426 but durations get some timestamps, formats with some unknown
3427 timestamps have their first few packets buffered and the
3428 timestamps corrected before they are returned to the user */
3429 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3430 st->first_dts = AV_NOPTS_VALUE;
3431 st->probe_packets = MAX_PROBE_PACKETS;
3432 st->pts_wrap_reference = AV_NOPTS_VALUE;
3433 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3435 /* default pts setting is MPEG-like */
3436 avpriv_set_pts_info(st, 33, 1, 90000);
3437 st->last_IP_pts = AV_NOPTS_VALUE;
3438 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3439 st->pts_buffer[i]= AV_NOPTS_VALUE;
3441 st->sample_aspect_ratio = (AVRational){0,1};
3443 #if FF_API_R_FRAME_RATE
3444 st->info->last_dts = AV_NOPTS_VALUE;
3446 st->info->fps_first_dts = AV_NOPTS_VALUE;
3447 st->info->fps_last_dts = AV_NOPTS_VALUE;
3449 s->streams[s->nb_streams++] = st;
3453 AVProgram *av_new_program(AVFormatContext *ac, int id)
3455 AVProgram *program=NULL;
3458 av_dlog(ac, "new_program: id=0x%04x\n", id);
3460 for(i=0; i<ac->nb_programs; i++)
3461 if(ac->programs[i]->id == id)
3462 program = ac->programs[i];
3465 program = av_mallocz(sizeof(AVProgram));
3468 dynarray_add(&ac->programs, &ac->nb_programs, program);
3469 program->discard = AVDISCARD_NONE;
3472 program->pts_wrap_reference = AV_NOPTS_VALUE;
3473 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3475 program->start_time =
3476 program->end_time = AV_NOPTS_VALUE;
3481 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3483 AVChapter *chapter = NULL;
3486 for(i=0; i<s->nb_chapters; i++)
3487 if(s->chapters[i]->id == id)
3488 chapter = s->chapters[i];
3491 chapter= av_mallocz(sizeof(AVChapter));
3494 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3496 av_dict_set(&chapter->metadata, "title", title, 0);
3498 chapter->time_base= time_base;
3499 chapter->start = start;
3505 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3508 AVProgram *program=NULL;
3511 if (idx >= ac->nb_streams) {
3512 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3516 for(i=0; i<ac->nb_programs; i++){
3517 if(ac->programs[i]->id != progid)
3519 program = ac->programs[i];
3520 for(j=0; j<program->nb_stream_indexes; j++)
3521 if(program->stream_index[j] == idx)
3524 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3527 program->stream_index = tmp;
3528 program->stream_index[program->nb_stream_indexes++] = idx;
3533 static void print_fps(double d, const char *postfix){
3534 uint64_t v= lrintf(d*100);
3535 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3536 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3537 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3540 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3542 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3543 AVDictionaryEntry *tag=NULL;
3545 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3546 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3547 if(strcmp("language", tag->key)){
3548 const char *p = tag->value;
3549 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3552 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3553 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3554 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3556 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3557 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3560 av_log(ctx, AV_LOG_INFO, "\n");
3566 /* "user interface" functions */
3567 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3570 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3571 AVStream *st = ic->streams[i];
3572 int g = av_gcd(st->time_base.num, st->time_base.den);
3573 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3574 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3575 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3576 /* the pid is an important information, so we display it */
3577 /* XXX: add a generic system */
3578 if (flags & AVFMT_SHOW_IDS)
3579 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3581 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3582 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3583 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3584 if (st->sample_aspect_ratio.num && // default
3585 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3586 AVRational display_aspect_ratio;
3587 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3588 st->codec->width*st->sample_aspect_ratio.num,
3589 st->codec->height*st->sample_aspect_ratio.den,
3591 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3592 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3593 display_aspect_ratio.num, display_aspect_ratio.den);
3595 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3596 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3597 print_fps(av_q2d(st->avg_frame_rate), "fps");
3598 #if FF_API_R_FRAME_RATE
3599 if(st->r_frame_rate.den && st->r_frame_rate.num)
3600 print_fps(av_q2d(st->r_frame_rate), "tbr");
3602 if(st->time_base.den && st->time_base.num)
3603 print_fps(1/av_q2d(st->time_base), "tbn");
3604 if(st->codec->time_base.den && st->codec->time_base.num)
3605 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3607 if (st->disposition & AV_DISPOSITION_DEFAULT)
3608 av_log(NULL, AV_LOG_INFO, " (default)");
3609 if (st->disposition & AV_DISPOSITION_DUB)
3610 av_log(NULL, AV_LOG_INFO, " (dub)");
3611 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3612 av_log(NULL, AV_LOG_INFO, " (original)");
3613 if (st->disposition & AV_DISPOSITION_COMMENT)
3614 av_log(NULL, AV_LOG_INFO, " (comment)");
3615 if (st->disposition & AV_DISPOSITION_LYRICS)
3616 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3617 if (st->disposition & AV_DISPOSITION_KARAOKE)
3618 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3619 if (st->disposition & AV_DISPOSITION_FORCED)
3620 av_log(NULL, AV_LOG_INFO, " (forced)");
3621 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3622 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3623 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3624 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3625 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3626 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3627 av_log(NULL, AV_LOG_INFO, "\n");
3628 dump_metadata(NULL, st->metadata, " ");
3631 void av_dump_format(AVFormatContext *ic,
3637 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3638 if (ic->nb_streams && !printed)
3641 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3642 is_output ? "Output" : "Input",
3644 is_output ? ic->oformat->name : ic->iformat->name,
3645 is_output ? "to" : "from", url);
3646 dump_metadata(NULL, ic->metadata, " ");
3648 av_log(NULL, AV_LOG_INFO, " Duration: ");
3649 if (ic->duration != AV_NOPTS_VALUE) {
3650 int hours, mins, secs, us;
3651 int64_t duration = ic->duration + 5000;
3652 secs = duration / AV_TIME_BASE;
3653 us = duration % AV_TIME_BASE;
3658 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3659 (100 * us) / AV_TIME_BASE);
3661 av_log(NULL, AV_LOG_INFO, "N/A");
3663 if (ic->start_time != AV_NOPTS_VALUE) {
3665 av_log(NULL, AV_LOG_INFO, ", start: ");
3666 secs = ic->start_time / AV_TIME_BASE;
3667 us = abs(ic->start_time % AV_TIME_BASE);
3668 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3669 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3671 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3673 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3675 av_log(NULL, AV_LOG_INFO, "N/A");
3677 av_log(NULL, AV_LOG_INFO, "\n");
3679 for (i = 0; i < ic->nb_chapters; i++) {
3680 AVChapter *ch = ic->chapters[i];
3681 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3682 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3683 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3685 dump_metadata(NULL, ch->metadata, " ");
3687 if(ic->nb_programs) {
3688 int j, k, total = 0;
3689 for(j=0; j<ic->nb_programs; j++) {
3690 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3692 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3693 name ? name->value : "");
3694 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3695 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3696 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3697 printed[ic->programs[j]->stream_index[k]] = 1;
3699 total += ic->programs[j]->nb_stream_indexes;
3701 if (total < ic->nb_streams)
3702 av_log(NULL, AV_LOG_INFO, " No Program\n");
3704 for(i=0;i<ic->nb_streams;i++)
3706 dump_stream_format(ic, i, index, is_output);
3711 uint64_t ff_ntp_time(void)
3713 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3716 int av_get_frame_filename(char *buf, int buf_size,
3717 const char *path, int number)
3720 char *q, buf1[20], c;
3721 int nd, len, percentd_found;
3733 while (av_isdigit(*p)) {
3734 nd = nd * 10 + *p++ - '0';
3737 } while (av_isdigit(c));
3746 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3748 if ((q - buf + len) > buf_size - 1)
3750 memcpy(q, buf1, len);
3758 if ((q - buf) < buf_size - 1)
3762 if (!percentd_found)
3771 static void hex_dump_internal(void *avcl, FILE *f, int level,
3772 const uint8_t *buf, int size)
3775 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3777 for(i=0;i<size;i+=16) {
3784 PRINT(" %02x", buf[i+j]);
3789 for(j=0;j<len;j++) {
3791 if (c < ' ' || c > '~')
3800 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3802 hex_dump_internal(NULL, f, 0, buf, size);
3805 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3807 hex_dump_internal(avcl, NULL, level, buf, size);
3810 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3812 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3813 PRINT("stream #%d:\n", pkt->stream_index);
3814 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3815 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3816 /* DTS is _always_ valid after av_read_frame() */
3818 if (pkt->dts == AV_NOPTS_VALUE)
3821 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3822 /* PTS may not be known if B-frames are present. */
3824 if (pkt->pts == AV_NOPTS_VALUE)
3827 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3829 PRINT(" size=%d\n", pkt->size);
3832 av_hex_dump(f, pkt->data, pkt->size);
3835 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3837 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3840 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3843 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3846 void av_url_split(char *proto, int proto_size,
3847 char *authorization, int authorization_size,
3848 char *hostname, int hostname_size,
3850 char *path, int path_size,
3853 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3855 if (port_ptr) *port_ptr = -1;
3856 if (proto_size > 0) proto[0] = 0;
3857 if (authorization_size > 0) authorization[0] = 0;
3858 if (hostname_size > 0) hostname[0] = 0;
3859 if (path_size > 0) path[0] = 0;
3861 /* parse protocol */
3862 if ((p = strchr(url, ':'))) {
3863 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3868 /* no protocol means plain filename */
3869 av_strlcpy(path, url, path_size);
3873 /* separate path from hostname */
3874 ls = strchr(p, '/');
3875 ls2 = strchr(p, '?');
3879 ls = FFMIN(ls, ls2);
3881 av_strlcpy(path, ls, path_size);
3883 ls = &p[strlen(p)]; // XXX
3885 /* the rest is hostname, use that to parse auth/port */
3887 /* authorization (user[:pass]@hostname) */
3889 while ((at = strchr(p, '@')) && at < ls) {
3890 av_strlcpy(authorization, at2,
3891 FFMIN(authorization_size, at + 1 - at2));
3892 p = at + 1; /* skip '@' */
3895 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3897 av_strlcpy(hostname, p + 1,
3898 FFMIN(hostname_size, brk - p));
3899 if (brk[1] == ':' && port_ptr)
3900 *port_ptr = atoi(brk + 2);
3901 } else if ((col = strchr(p, ':')) && col < ls) {
3902 av_strlcpy(hostname, p,
3903 FFMIN(col + 1 - p, hostname_size));
3904 if (port_ptr) *port_ptr = atoi(col + 1);
3906 av_strlcpy(hostname, p,
3907 FFMIN(ls + 1 - p, hostname_size));
3911 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3914 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3917 'C', 'D', 'E', 'F' };
3918 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3921 'c', 'd', 'e', 'f' };
3922 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3924 for(i = 0; i < s; i++) {
3925 buff[i * 2] = hex_table[src[i] >> 4];
3926 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3932 int ff_hex_to_data(uint8_t *data, const char *p)
3939 p += strspn(p, SPACE_CHARS);
3942 c = av_toupper((unsigned char) *p++);
3943 if (c >= '0' && c <= '9')
3945 else if (c >= 'A' && c <= 'F')
3960 #if FF_API_SET_PTS_INFO
3961 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3962 unsigned int pts_num, unsigned int pts_den)
3964 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3968 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3969 unsigned int pts_num, unsigned int pts_den)
3972 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3973 if(new_tb.num != pts_num)
3974 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3976 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3978 if(new_tb.num <= 0 || new_tb.den <= 0) {
3979 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);
3982 s->time_base = new_tb;
3983 av_codec_set_pkt_timebase(s->codec, new_tb);
3984 s->pts_wrap_bits = pts_wrap_bits;
3987 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3990 const char *ptr = str;
3992 /* Parse key=value pairs. */
3995 char *dest = NULL, *dest_end;
3996 int key_len, dest_len = 0;
3998 /* Skip whitespace and potential commas. */
3999 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4006 if (!(ptr = strchr(key, '=')))
4009 key_len = ptr - key;
4011 callback_get_buf(context, key, key_len, &dest, &dest_len);
4012 dest_end = dest + dest_len - 1;
4016 while (*ptr && *ptr != '\"') {
4020 if (dest && dest < dest_end)
4024 if (dest && dest < dest_end)
4032 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4033 if (dest && dest < dest_end)
4041 int ff_find_stream_index(AVFormatContext *s, int id)
4044 for (i = 0; i < s->nb_streams; i++) {
4045 if (s->streams[i]->id == id)
4051 int64_t ff_iso8601_to_unix_time(const char *datestr)
4053 struct tm time1 = {0}, time2 = {0};
4055 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4056 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4058 return av_timegm(&time2);
4060 return av_timegm(&time1);
4063 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4066 if (ofmt->query_codec)
4067 return ofmt->query_codec(codec_id, std_compliance);
4068 else if (ofmt->codec_tag)
4069 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4070 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4071 codec_id == ofmt->subtitle_codec)
4074 return AVERROR_PATCHWELCOME;
4077 int avformat_network_init(void)
4081 ff_network_inited_globally = 1;
4082 if ((ret = ff_network_init()) < 0)
4089 int avformat_network_deinit(void)
4098 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4099 uint64_t channel_layout, int32_t sample_rate,
4100 int32_t width, int32_t height)
4106 return AVERROR(EINVAL);
4109 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4111 if (channel_layout) {
4113 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4117 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4119 if (width || height) {
4121 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4123 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4125 return AVERROR(ENOMEM);
4126 bytestream_put_le32(&data, flags);
4128 bytestream_put_le32(&data, channels);
4130 bytestream_put_le64(&data, channel_layout);
4132 bytestream_put_le32(&data, sample_rate);
4133 if (width || height) {
4134 bytestream_put_le32(&data, width);
4135 bytestream_put_le32(&data, height);
4140 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4142 AVRational undef = {0, 1};
4143 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4144 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4145 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4147 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4148 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4149 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4150 stream_sample_aspect_ratio = undef;
4152 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4153 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4154 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4155 frame_sample_aspect_ratio = undef;
4157 if (stream_sample_aspect_ratio.num)
4158 return stream_sample_aspect_ratio;
4160 return frame_sample_aspect_ratio;
4163 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4165 AVRational fr = st->r_frame_rate;
4167 if (st->codec->ticks_per_frame > 1) {
4168 AVRational codec_fr = av_inv_q(st->codec->time_base);
4169 AVRational avg_fr = st->avg_frame_rate;
4170 codec_fr.den *= st->codec->ticks_per_frame;
4171 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4172 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4179 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4182 if (*spec <= '9' && *spec >= '0') /* opt:index */
4183 return strtol(spec, NULL, 0) == st->index;
4184 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4185 *spec == 't') { /* opt:[vasdt] */
4186 enum AVMediaType type;
4189 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4190 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4191 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4192 case 'd': type = AVMEDIA_TYPE_DATA; break;
4193 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4194 default: av_assert0(0);
4196 if (type != st->codec->codec_type)
4198 if (*spec++ == ':') { /* possibly followed by :index */
4199 int i, index = strtol(spec, NULL, 0);
4200 for (i = 0; i < s->nb_streams; i++)
4201 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4202 return i == st->index;
4206 } else if (*spec == 'p' && *(spec + 1) == ':') {
4210 prog_id = strtol(spec, &endptr, 0);
4211 for (i = 0; i < s->nb_programs; i++) {
4212 if (s->programs[i]->id != prog_id)
4215 if (*endptr++ == ':') {
4216 int stream_idx = strtol(endptr, NULL, 0);
4217 return stream_idx >= 0 &&
4218 stream_idx < s->programs[i]->nb_stream_indexes &&
4219 st->index == s->programs[i]->stream_index[stream_idx];
4222 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4223 if (st->index == s->programs[i]->stream_index[j])
4227 } else if (*spec == '#') {
4230 sid = strtol(spec + 1, &endptr, 0);
4232 return st->id == sid;
4233 } else if (!*spec) /* empty specifier, matches everything */
4236 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4237 return AVERROR(EINVAL);
4240 int ff_generate_avci_extradata(AVStream *st)
4242 static const uint8_t avci100_1080p_extradata[] = {
4244 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4245 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4246 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4247 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4248 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4249 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4250 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4251 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4252 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4254 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4257 static const uint8_t avci100_1080i_extradata[] = {
4259 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4260 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4261 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4262 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4263 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4264 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4265 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4266 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4267 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4268 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4269 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4271 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4274 static const uint8_t avci50_1080i_extradata[] = {
4276 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4277 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4278 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4279 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4280 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4281 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4282 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4283 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4284 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4285 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4286 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4288 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4291 static const uint8_t avci100_720p_extradata[] = {
4293 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4294 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4295 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4296 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4297 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4298 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4299 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4300 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4301 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4302 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4304 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4308 const uint8_t *data = NULL;
4311 if (st->codec->width == 1920) {
4312 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4313 data = avci100_1080p_extradata;
4314 size = sizeof(avci100_1080p_extradata);
4316 data = avci100_1080i_extradata;
4317 size = sizeof(avci100_1080i_extradata);
4319 } else if (st->codec->width == 1440) {
4320 data = avci50_1080i_extradata;
4321 size = sizeof(avci50_1080i_extradata);
4322 } else if (st->codec->width == 1280) {
4323 data = avci100_720p_extradata;
4324 size = sizeof(avci100_720p_extradata);
4330 av_freep(&st->codec->extradata);
4331 if (ff_alloc_extradata(st->codec, size))
4332 return AVERROR(ENOMEM);
4333 memcpy(st->codec->extradata, data, size);