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_get_extradata(AVCodecContext *avctx, AVIOContext *pb, int size)
2706 int ret = ff_alloc_extradata(avctx, size);
2709 ret = avio_read(pb, avctx->extradata, size);
2711 av_freep(&avctx->extradata);
2712 avctx->extradata_size = 0;
2713 av_log(avctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
2714 return ret < 0 ? ret : AVERROR_INVALIDDATA;
2720 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2723 int64_t last = st->info->last_dts;
2725 if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2726 && ts - (uint64_t)last < INT64_MAX){
2727 double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2728 int64_t duration= ts - last;
2730 if (!st->info->duration_error)
2731 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2732 if (!st->info->duration_error)
2733 return AVERROR(ENOMEM);
2735 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2736 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2737 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2738 if (st->info->duration_error[0][1][i] < 1e10) {
2739 int framerate= get_std_framerate(i);
2740 double sdts= dts*framerate/(1001*12);
2742 int64_t ticks= llrint(sdts+j*0.5);
2743 double error= sdts - ticks + j*0.5;
2744 st->info->duration_error[j][0][i] += error;
2745 st->info->duration_error[j][1][i] += error*error;
2749 st->info->duration_count++;
2750 st->info->rfps_duration_sum += duration;
2752 if (st->info->duration_count % 10 == 0) {
2753 int n = st->info->duration_count;
2754 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2755 if (st->info->duration_error[0][1][i] < 1e10) {
2756 double a0 = st->info->duration_error[0][0][i] / n;
2757 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2758 double a1 = st->info->duration_error[1][0][i] / n;
2759 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
2760 if (error0 > 0.04 && error1 > 0.04) {
2761 st->info->duration_error[0][1][i] = 2e10;
2762 st->info->duration_error[1][1][i] = 2e10;
2768 // ignore the first 4 values, they might have some random jitter
2769 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
2770 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2772 if (ts != AV_NOPTS_VALUE)
2773 st->info->last_dts = ts;
2778 void ff_rfps_calculate(AVFormatContext *ic)
2782 for (i = 0; i<ic->nb_streams; i++) {
2783 AVStream *st = ic->streams[i];
2785 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2787 // the check for tb_unreliable() is not completely correct, since this is not about handling
2788 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2789 // ipmovie.c produces.
2790 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)
2791 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);
2792 if (st->info->duration_count>1 && !st->r_frame_rate.num
2793 && tb_unreliable(st->codec)) {
2795 double best_error= 0.01;
2797 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2800 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2802 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2805 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
2809 int n= st->info->duration_count;
2810 double a= st->info->duration_error[k][0][j] / n;
2811 double error= st->info->duration_error[k][1][j]/n - a*a;
2813 if(error < best_error && best_error> 0.000000001){
2815 num = get_std_framerate(j);
2818 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2821 // do not increase frame rate by more than 1 % in order to match a standard rate.
2822 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2823 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2826 av_freep(&st->info->duration_error);
2827 st->info->last_dts = AV_NOPTS_VALUE;
2828 st->info->duration_count = 0;
2829 st->info->rfps_duration_sum = 0;
2833 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2835 int i, count, ret = 0, j;
2838 AVPacket pkt1, *pkt;
2839 int64_t old_offset = avio_tell(ic->pb);
2840 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2841 int flush_codecs = ic->probesize > 0;
2844 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
2845 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
2847 for(i=0;i<ic->nb_streams;i++) {
2848 const AVCodec *codec;
2849 AVDictionary *thread_opt = NULL;
2850 st = ic->streams[i];
2852 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2853 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2854 /* if(!st->time_base.num)
2856 if(!st->codec->time_base.num)
2857 st->codec->time_base= st->time_base;
2859 //only for the split stuff
2860 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2861 st->parser = av_parser_init(st->codec->codec_id);
2863 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2864 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2865 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2866 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2868 } else if (st->need_parsing) {
2869 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2870 "%s, packets or times may be invalid.\n",
2871 avcodec_get_name(st->codec->codec_id));
2874 codec = find_decoder(ic, st, st->codec->codec_id);
2876 /* force thread count to 1 since the h264 decoder will not extract SPS
2877 * and PPS to extradata during multi-threaded decoding */
2878 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2880 /* Ensure that subtitle_header is properly set. */
2881 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2882 && codec && !st->codec->codec) {
2883 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2884 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2887 //try to just open decoders, in case this is enough to get parameters
2888 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2889 if (codec && !st->codec->codec)
2890 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2891 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2894 av_dict_free(&thread_opt);
2897 for (i=0; i<ic->nb_streams; i++) {
2898 #if FF_API_R_FRAME_RATE
2899 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2901 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2902 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2908 if (ff_check_interrupt(&ic->interrupt_callback)){
2910 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2914 /* check if one codec still needs to be handled */
2915 for(i=0;i<ic->nb_streams;i++) {
2916 int fps_analyze_framecount = 20;
2918 st = ic->streams[i];
2919 if (!has_codec_parameters(st, NULL))
2921 /* if the timebase is coarse (like the usual millisecond precision
2922 of mkv), we need to analyze more frames to reliably arrive at
2924 if (av_q2d(st->time_base) > 0.0005)
2925 fps_analyze_framecount *= 2;
2926 if (ic->fps_probe_size >= 0)
2927 fps_analyze_framecount = ic->fps_probe_size;
2928 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2929 fps_analyze_framecount = 0;
2930 /* variable fps and no guess at the real fps */
2931 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2932 && st->info->duration_count < fps_analyze_framecount
2933 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2935 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2937 if (st->first_dts == AV_NOPTS_VALUE &&
2938 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2939 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2942 if (i == ic->nb_streams) {
2943 /* NOTE: if the format has no header, then we need to read
2944 some packets to get most of the streams, so we cannot
2946 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2947 /* if we found the info for all the codecs, we can stop */
2949 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2954 /* we did not get all the codec info, but we read too much data */
2955 if (read_size >= ic->probesize) {
2957 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2958 for (i = 0; i < ic->nb_streams; i++)
2959 if (!ic->streams[i]->r_frame_rate.num &&
2960 ic->streams[i]->info->duration_count <= 1 &&
2961 strcmp(ic->iformat->name, "image2"))
2962 av_log(ic, AV_LOG_WARNING,
2963 "Stream #%d: not enough frames to estimate rate; "
2964 "consider increasing probesize\n", i);
2968 /* NOTE: a new stream can be added there if no header in file
2969 (AVFMTCTX_NOHEADER) */
2970 ret = read_frame_internal(ic, &pkt1);
2971 if (ret == AVERROR(EAGAIN))
2979 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2980 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2982 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2983 &ic->packet_buffer_end);
2985 ret = AVERROR(ENOMEM);
2986 goto find_stream_info_err;
2988 if ((ret = av_dup_packet(pkt)) < 0)
2989 goto find_stream_info_err;
2992 st = ic->streams[pkt->stream_index];
2993 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2994 read_size += pkt->size;
2996 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2997 /* check for non-increasing dts */
2998 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2999 st->info->fps_last_dts >= pkt->dts) {
3000 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
3001 "packet %d with DTS %"PRId64", packet %d with DTS "
3002 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3003 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3004 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3006 /* check for a discontinuity in dts - if the difference in dts
3007 * is more than 1000 times the average packet duration in the sequence,
3008 * we treat it as a discontinuity */
3009 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3010 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3011 (pkt->dts - st->info->fps_last_dts) / 1000 >
3012 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3013 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
3014 "packet %d with DTS %"PRId64", packet %d with DTS "
3015 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3016 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3017 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3020 /* update stored dts values */
3021 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3022 st->info->fps_first_dts = pkt->dts;
3023 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3025 st->info->fps_last_dts = pkt->dts;
3026 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3028 if (st->codec_info_nb_frames>1) {
3030 if (st->time_base.den > 0)
3031 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3032 if (st->avg_frame_rate.num > 0)
3033 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3036 && st->codec_info_nb_frames>30
3037 && st->info->fps_first_dts != AV_NOPTS_VALUE
3038 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3039 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3041 if (t >= ic->max_analyze_duration) {
3042 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
3045 if (pkt->duration) {
3046 st->info->codec_info_duration += pkt->duration;
3047 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
3050 #if FF_API_R_FRAME_RATE
3051 ff_rfps_add_frame(ic, st, pkt->dts);
3053 if(st->parser && st->parser->parser->split && !st->codec->extradata){
3054 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
3055 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3056 if (ff_alloc_extradata(st->codec, i))
3057 return AVERROR(ENOMEM);
3058 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
3062 /* if still no information, we try to open the codec and to
3063 decompress the frame. We try to avoid that in most cases as
3064 it takes longer and uses more memory. For MPEG-4, we need to
3065 decompress for QuickTime.
3067 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3068 least one frame of codec data, this makes sure the codec initializes
3069 the channel configuration and does not only trust the values from the container.
3071 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
3073 st->codec_info_nb_frames++;
3078 AVPacket empty_pkt = { 0 };
3080 av_init_packet(&empty_pkt);
3082 for(i=0;i<ic->nb_streams;i++) {
3084 st = ic->streams[i];
3086 /* flush the decoders */
3087 if (st->info->found_decoder == 1) {
3089 err = try_decode_frame(ic, st, &empty_pkt,
3090 (options && i < orig_nb_streams) ?
3091 &options[i] : NULL);
3092 } while (err > 0 && !has_codec_parameters(st, NULL));
3095 av_log(ic, AV_LOG_INFO,
3096 "decoding for stream %d failed\n", st->index);
3102 // close codecs which were opened in try_decode_frame()
3103 for(i=0;i<ic->nb_streams;i++) {
3104 st = ic->streams[i];
3105 avcodec_close(st->codec);
3108 ff_rfps_calculate(ic);
3110 for(i=0;i<ic->nb_streams;i++) {
3111 st = ic->streams[i];
3112 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3113 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3114 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3115 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3116 st->codec->codec_tag= tag;
3119 /* estimate average framerate if not set by demuxer */
3120 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3122 double best_error = 0.01;
3124 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3125 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3126 st->info->codec_info_duration < 0)
3128 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3129 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3130 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3132 /* round guessed framerate to a "standard" framerate if it's
3133 * within 1% of the original estimate*/
3134 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3135 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3136 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3138 if (error < best_error) {
3140 best_fps = std_fps.num;
3144 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3145 best_fps, 12*1001, INT_MAX);
3149 if (!st->r_frame_rate.num){
3150 if( st->codec->time_base.den * (int64_t)st->time_base.num
3151 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3152 st->r_frame_rate.num = st->codec->time_base.den;
3153 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3155 st->r_frame_rate.num = st->time_base.den;
3156 st->r_frame_rate.den = st->time_base.num;
3159 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3160 if(!st->codec->bits_per_coded_sample)
3161 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3162 // set stream disposition based on audio service type
3163 switch (st->codec->audio_service_type) {
3164 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3165 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3166 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3167 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3168 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3169 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3170 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3171 st->disposition = AV_DISPOSITION_COMMENT; break;
3172 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3173 st->disposition = AV_DISPOSITION_KARAOKE; break;
3179 estimate_timings(ic, old_offset);
3181 if (ret >= 0 && ic->nb_streams)
3182 ret = -1; /* we could not have all the codec parameters before EOF */
3183 for(i=0;i<ic->nb_streams;i++) {
3185 st = ic->streams[i];
3186 if (!has_codec_parameters(st, &errmsg)) {
3188 avcodec_string(buf, sizeof(buf), st->codec, 0);
3189 av_log(ic, AV_LOG_WARNING,
3190 "Could not find codec parameters for stream %d (%s): %s\n"
3191 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3198 compute_chapters_end(ic);
3200 find_stream_info_err:
3201 for (i=0; i < ic->nb_streams; i++) {
3202 st = ic->streams[i];
3203 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3204 ic->streams[i]->codec->thread_count = 0;
3206 av_freep(&st->info->duration_error);
3207 av_freep(&ic->streams[i]->info);
3210 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3211 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3215 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3219 for (i = 0; i < ic->nb_programs; i++) {
3220 if (ic->programs[i] == last) {
3224 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3225 if (ic->programs[i]->stream_index[j] == s)
3226 return ic->programs[i];
3232 int av_find_best_stream(AVFormatContext *ic,
3233 enum AVMediaType type,
3234 int wanted_stream_nb,
3236 AVCodec **decoder_ret,
3239 int i, nb_streams = ic->nb_streams;
3240 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3241 unsigned *program = NULL;
3242 AVCodec *decoder = NULL, *best_decoder = NULL;
3244 if (related_stream >= 0 && wanted_stream_nb < 0) {
3245 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3247 program = p->stream_index;
3248 nb_streams = p->nb_stream_indexes;
3251 for (i = 0; i < nb_streams; i++) {
3252 int real_stream_index = program ? program[i] : i;
3253 AVStream *st = ic->streams[real_stream_index];
3254 AVCodecContext *avctx = st->codec;
3255 if (avctx->codec_type != type)
3257 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3259 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3262 decoder = find_decoder(ic, st, st->codec->codec_id);
3265 ret = AVERROR_DECODER_NOT_FOUND;
3269 count = st->codec_info_nb_frames;
3270 bitrate = avctx->bit_rate;
3271 multiframe = FFMIN(5, count);
3272 if ((best_multiframe > multiframe) ||
3273 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3274 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3277 best_bitrate = bitrate;
3278 best_multiframe = multiframe;
3279 ret = real_stream_index;
3280 best_decoder = decoder;
3281 if (program && i == nb_streams - 1 && ret < 0) {
3283 nb_streams = ic->nb_streams;
3284 i = 0; /* no related stream found, try again with everything */
3288 *decoder_ret = best_decoder;
3292 /*******************************************************/
3294 int av_read_play(AVFormatContext *s)
3296 if (s->iformat->read_play)
3297 return s->iformat->read_play(s);
3299 return avio_pause(s->pb, 0);
3300 return AVERROR(ENOSYS);
3303 int av_read_pause(AVFormatContext *s)
3305 if (s->iformat->read_pause)
3306 return s->iformat->read_pause(s);
3308 return avio_pause(s->pb, 1);
3309 return AVERROR(ENOSYS);
3312 void ff_free_stream(AVFormatContext *s, AVStream *st){
3313 av_assert0(s->nb_streams>0);
3314 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3317 av_parser_close(st->parser);
3319 if (st->attached_pic.data)
3320 av_free_packet(&st->attached_pic);
3321 av_dict_free(&st->metadata);
3322 av_freep(&st->probe_data.buf);
3323 av_freep(&st->index_entries);
3324 av_freep(&st->codec->extradata);
3325 av_freep(&st->codec->subtitle_header);
3326 av_freep(&st->codec);
3327 av_freep(&st->priv_data);
3329 av_freep(&st->info->duration_error);
3330 av_freep(&st->info);
3331 av_freep(&s->streams[ --s->nb_streams ]);
3334 void avformat_free_context(AVFormatContext *s)
3342 if (s->iformat && s->iformat->priv_class && s->priv_data)
3343 av_opt_free(s->priv_data);
3345 for(i=s->nb_streams-1; i>=0; i--) {
3346 ff_free_stream(s, s->streams[i]);
3348 for(i=s->nb_programs-1; i>=0; i--) {
3349 av_dict_free(&s->programs[i]->metadata);
3350 av_freep(&s->programs[i]->stream_index);
3351 av_freep(&s->programs[i]);
3353 av_freep(&s->programs);
3354 av_freep(&s->priv_data);
3355 while(s->nb_chapters--) {
3356 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3357 av_freep(&s->chapters[s->nb_chapters]);
3359 av_freep(&s->chapters);
3360 av_dict_free(&s->metadata);
3361 av_freep(&s->streams);
3365 #if FF_API_CLOSE_INPUT_FILE
3366 void av_close_input_file(AVFormatContext *s)
3368 avformat_close_input(&s);
3372 void avformat_close_input(AVFormatContext **ps)
3383 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3384 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3387 flush_packet_queue(s);
3390 if (s->iformat->read_close)
3391 s->iformat->read_close(s);
3394 avformat_free_context(s);
3401 #if FF_API_NEW_STREAM
3402 AVStream *av_new_stream(AVFormatContext *s, int id)
3404 AVStream *st = avformat_new_stream(s, NULL);
3411 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3417 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3419 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3422 s->streams = streams;
3424 st = av_mallocz(sizeof(AVStream));
3427 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3431 st->info->last_dts = AV_NOPTS_VALUE;
3433 st->codec = avcodec_alloc_context3(c);
3435 /* no default bitrate if decoding */
3436 st->codec->bit_rate = 0;
3438 st->index = s->nb_streams;
3439 st->start_time = AV_NOPTS_VALUE;
3440 st->duration = AV_NOPTS_VALUE;
3441 /* we set the current DTS to 0 so that formats without any timestamps
3442 but durations get some timestamps, formats with some unknown
3443 timestamps have their first few packets buffered and the
3444 timestamps corrected before they are returned to the user */
3445 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3446 st->first_dts = AV_NOPTS_VALUE;
3447 st->probe_packets = MAX_PROBE_PACKETS;
3448 st->pts_wrap_reference = AV_NOPTS_VALUE;
3449 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3451 /* default pts setting is MPEG-like */
3452 avpriv_set_pts_info(st, 33, 1, 90000);
3453 st->last_IP_pts = AV_NOPTS_VALUE;
3454 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3455 st->pts_buffer[i]= AV_NOPTS_VALUE;
3457 st->sample_aspect_ratio = (AVRational){0,1};
3459 #if FF_API_R_FRAME_RATE
3460 st->info->last_dts = AV_NOPTS_VALUE;
3462 st->info->fps_first_dts = AV_NOPTS_VALUE;
3463 st->info->fps_last_dts = AV_NOPTS_VALUE;
3465 s->streams[s->nb_streams++] = st;
3469 AVProgram *av_new_program(AVFormatContext *ac, int id)
3471 AVProgram *program=NULL;
3474 av_dlog(ac, "new_program: id=0x%04x\n", id);
3476 for(i=0; i<ac->nb_programs; i++)
3477 if(ac->programs[i]->id == id)
3478 program = ac->programs[i];
3481 program = av_mallocz(sizeof(AVProgram));
3484 dynarray_add(&ac->programs, &ac->nb_programs, program);
3485 program->discard = AVDISCARD_NONE;
3488 program->pts_wrap_reference = AV_NOPTS_VALUE;
3489 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3491 program->start_time =
3492 program->end_time = AV_NOPTS_VALUE;
3497 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3499 AVChapter *chapter = NULL;
3502 for(i=0; i<s->nb_chapters; i++)
3503 if(s->chapters[i]->id == id)
3504 chapter = s->chapters[i];
3507 chapter= av_mallocz(sizeof(AVChapter));
3510 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3512 av_dict_set(&chapter->metadata, "title", title, 0);
3514 chapter->time_base= time_base;
3515 chapter->start = start;
3521 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3524 AVProgram *program=NULL;
3527 if (idx >= ac->nb_streams) {
3528 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3532 for(i=0; i<ac->nb_programs; i++){
3533 if(ac->programs[i]->id != progid)
3535 program = ac->programs[i];
3536 for(j=0; j<program->nb_stream_indexes; j++)
3537 if(program->stream_index[j] == idx)
3540 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3543 program->stream_index = tmp;
3544 program->stream_index[program->nb_stream_indexes++] = idx;
3549 static void print_fps(double d, const char *postfix){
3550 uint64_t v= lrintf(d*100);
3551 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3552 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3553 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3556 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3558 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3559 AVDictionaryEntry *tag=NULL;
3561 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3562 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3563 if(strcmp("language", tag->key)){
3564 const char *p = tag->value;
3565 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3568 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3569 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3570 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3572 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3573 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3576 av_log(ctx, AV_LOG_INFO, "\n");
3582 /* "user interface" functions */
3583 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3586 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3587 AVStream *st = ic->streams[i];
3588 int g = av_gcd(st->time_base.num, st->time_base.den);
3589 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3590 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3591 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3592 /* the pid is an important information, so we display it */
3593 /* XXX: add a generic system */
3594 if (flags & AVFMT_SHOW_IDS)
3595 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3597 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3598 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3599 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3600 if (st->sample_aspect_ratio.num && // default
3601 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3602 AVRational display_aspect_ratio;
3603 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3604 st->codec->width*st->sample_aspect_ratio.num,
3605 st->codec->height*st->sample_aspect_ratio.den,
3607 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3608 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3609 display_aspect_ratio.num, display_aspect_ratio.den);
3611 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3612 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3613 print_fps(av_q2d(st->avg_frame_rate), "fps");
3614 #if FF_API_R_FRAME_RATE
3615 if(st->r_frame_rate.den && st->r_frame_rate.num)
3616 print_fps(av_q2d(st->r_frame_rate), "tbr");
3618 if(st->time_base.den && st->time_base.num)
3619 print_fps(1/av_q2d(st->time_base), "tbn");
3620 if(st->codec->time_base.den && st->codec->time_base.num)
3621 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3623 if (st->disposition & AV_DISPOSITION_DEFAULT)
3624 av_log(NULL, AV_LOG_INFO, " (default)");
3625 if (st->disposition & AV_DISPOSITION_DUB)
3626 av_log(NULL, AV_LOG_INFO, " (dub)");
3627 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3628 av_log(NULL, AV_LOG_INFO, " (original)");
3629 if (st->disposition & AV_DISPOSITION_COMMENT)
3630 av_log(NULL, AV_LOG_INFO, " (comment)");
3631 if (st->disposition & AV_DISPOSITION_LYRICS)
3632 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3633 if (st->disposition & AV_DISPOSITION_KARAOKE)
3634 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3635 if (st->disposition & AV_DISPOSITION_FORCED)
3636 av_log(NULL, AV_LOG_INFO, " (forced)");
3637 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3638 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3639 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3640 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3641 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3642 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3643 av_log(NULL, AV_LOG_INFO, "\n");
3644 dump_metadata(NULL, st->metadata, " ");
3647 void av_dump_format(AVFormatContext *ic,
3653 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3654 if (ic->nb_streams && !printed)
3657 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3658 is_output ? "Output" : "Input",
3660 is_output ? ic->oformat->name : ic->iformat->name,
3661 is_output ? "to" : "from", url);
3662 dump_metadata(NULL, ic->metadata, " ");
3664 av_log(NULL, AV_LOG_INFO, " Duration: ");
3665 if (ic->duration != AV_NOPTS_VALUE) {
3666 int hours, mins, secs, us;
3667 int64_t duration = ic->duration + 5000;
3668 secs = duration / AV_TIME_BASE;
3669 us = duration % AV_TIME_BASE;
3674 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3675 (100 * us) / AV_TIME_BASE);
3677 av_log(NULL, AV_LOG_INFO, "N/A");
3679 if (ic->start_time != AV_NOPTS_VALUE) {
3681 av_log(NULL, AV_LOG_INFO, ", start: ");
3682 secs = ic->start_time / AV_TIME_BASE;
3683 us = abs(ic->start_time % AV_TIME_BASE);
3684 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3685 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3687 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3689 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3691 av_log(NULL, AV_LOG_INFO, "N/A");
3693 av_log(NULL, AV_LOG_INFO, "\n");
3695 for (i = 0; i < ic->nb_chapters; i++) {
3696 AVChapter *ch = ic->chapters[i];
3697 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3698 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3699 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3701 dump_metadata(NULL, ch->metadata, " ");
3703 if(ic->nb_programs) {
3704 int j, k, total = 0;
3705 for(j=0; j<ic->nb_programs; j++) {
3706 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3708 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3709 name ? name->value : "");
3710 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3711 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3712 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3713 printed[ic->programs[j]->stream_index[k]] = 1;
3715 total += ic->programs[j]->nb_stream_indexes;
3717 if (total < ic->nb_streams)
3718 av_log(NULL, AV_LOG_INFO, " No Program\n");
3720 for(i=0;i<ic->nb_streams;i++)
3722 dump_stream_format(ic, i, index, is_output);
3727 uint64_t ff_ntp_time(void)
3729 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3732 int av_get_frame_filename(char *buf, int buf_size,
3733 const char *path, int number)
3736 char *q, buf1[20], c;
3737 int nd, len, percentd_found;
3749 while (av_isdigit(*p)) {
3750 nd = nd * 10 + *p++ - '0';
3753 } while (av_isdigit(c));
3762 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3764 if ((q - buf + len) > buf_size - 1)
3766 memcpy(q, buf1, len);
3774 if ((q - buf) < buf_size - 1)
3778 if (!percentd_found)
3787 static void hex_dump_internal(void *avcl, FILE *f, int level,
3788 const uint8_t *buf, int size)
3791 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3793 for(i=0;i<size;i+=16) {
3800 PRINT(" %02x", buf[i+j]);
3805 for(j=0;j<len;j++) {
3807 if (c < ' ' || c > '~')
3816 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3818 hex_dump_internal(NULL, f, 0, buf, size);
3821 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3823 hex_dump_internal(avcl, NULL, level, buf, size);
3826 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3828 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3829 PRINT("stream #%d:\n", pkt->stream_index);
3830 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3831 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3832 /* DTS is _always_ valid after av_read_frame() */
3834 if (pkt->dts == AV_NOPTS_VALUE)
3837 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3838 /* PTS may not be known if B-frames are present. */
3840 if (pkt->pts == AV_NOPTS_VALUE)
3843 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3845 PRINT(" size=%d\n", pkt->size);
3848 av_hex_dump(f, pkt->data, pkt->size);
3851 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3853 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3856 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3859 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3862 void av_url_split(char *proto, int proto_size,
3863 char *authorization, int authorization_size,
3864 char *hostname, int hostname_size,
3866 char *path, int path_size,
3869 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3871 if (port_ptr) *port_ptr = -1;
3872 if (proto_size > 0) proto[0] = 0;
3873 if (authorization_size > 0) authorization[0] = 0;
3874 if (hostname_size > 0) hostname[0] = 0;
3875 if (path_size > 0) path[0] = 0;
3877 /* parse protocol */
3878 if ((p = strchr(url, ':'))) {
3879 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3884 /* no protocol means plain filename */
3885 av_strlcpy(path, url, path_size);
3889 /* separate path from hostname */
3890 ls = strchr(p, '/');
3891 ls2 = strchr(p, '?');
3895 ls = FFMIN(ls, ls2);
3897 av_strlcpy(path, ls, path_size);
3899 ls = &p[strlen(p)]; // XXX
3901 /* the rest is hostname, use that to parse auth/port */
3903 /* authorization (user[:pass]@hostname) */
3905 while ((at = strchr(p, '@')) && at < ls) {
3906 av_strlcpy(authorization, at2,
3907 FFMIN(authorization_size, at + 1 - at2));
3908 p = at + 1; /* skip '@' */
3911 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3913 av_strlcpy(hostname, p + 1,
3914 FFMIN(hostname_size, brk - p));
3915 if (brk[1] == ':' && port_ptr)
3916 *port_ptr = atoi(brk + 2);
3917 } else if ((col = strchr(p, ':')) && col < ls) {
3918 av_strlcpy(hostname, p,
3919 FFMIN(col + 1 - p, hostname_size));
3920 if (port_ptr) *port_ptr = atoi(col + 1);
3922 av_strlcpy(hostname, p,
3923 FFMIN(ls + 1 - p, hostname_size));
3927 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3930 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3933 'C', 'D', 'E', 'F' };
3934 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3937 'c', 'd', 'e', 'f' };
3938 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3940 for(i = 0; i < s; i++) {
3941 buff[i * 2] = hex_table[src[i] >> 4];
3942 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3948 int ff_hex_to_data(uint8_t *data, const char *p)
3955 p += strspn(p, SPACE_CHARS);
3958 c = av_toupper((unsigned char) *p++);
3959 if (c >= '0' && c <= '9')
3961 else if (c >= 'A' && c <= 'F')
3976 #if FF_API_SET_PTS_INFO
3977 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3978 unsigned int pts_num, unsigned int pts_den)
3980 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3984 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3985 unsigned int pts_num, unsigned int pts_den)
3988 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3989 if(new_tb.num != pts_num)
3990 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3992 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3994 if(new_tb.num <= 0 || new_tb.den <= 0) {
3995 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);
3998 s->time_base = new_tb;
3999 av_codec_set_pkt_timebase(s->codec, new_tb);
4000 s->pts_wrap_bits = pts_wrap_bits;
4003 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4006 const char *ptr = str;
4008 /* Parse key=value pairs. */
4011 char *dest = NULL, *dest_end;
4012 int key_len, dest_len = 0;
4014 /* Skip whitespace and potential commas. */
4015 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4022 if (!(ptr = strchr(key, '=')))
4025 key_len = ptr - key;
4027 callback_get_buf(context, key, key_len, &dest, &dest_len);
4028 dest_end = dest + dest_len - 1;
4032 while (*ptr && *ptr != '\"') {
4036 if (dest && dest < dest_end)
4040 if (dest && dest < dest_end)
4048 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4049 if (dest && dest < dest_end)
4057 int ff_find_stream_index(AVFormatContext *s, int id)
4060 for (i = 0; i < s->nb_streams; i++) {
4061 if (s->streams[i]->id == id)
4067 int64_t ff_iso8601_to_unix_time(const char *datestr)
4069 struct tm time1 = {0}, time2 = {0};
4071 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4072 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4074 return av_timegm(&time2);
4076 return av_timegm(&time1);
4079 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4082 if (ofmt->query_codec)
4083 return ofmt->query_codec(codec_id, std_compliance);
4084 else if (ofmt->codec_tag)
4085 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4086 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4087 codec_id == ofmt->subtitle_codec)
4090 return AVERROR_PATCHWELCOME;
4093 int avformat_network_init(void)
4097 ff_network_inited_globally = 1;
4098 if ((ret = ff_network_init()) < 0)
4105 int avformat_network_deinit(void)
4114 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4115 uint64_t channel_layout, int32_t sample_rate,
4116 int32_t width, int32_t height)
4122 return AVERROR(EINVAL);
4125 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4127 if (channel_layout) {
4129 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4133 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4135 if (width || height) {
4137 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4139 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4141 return AVERROR(ENOMEM);
4142 bytestream_put_le32(&data, flags);
4144 bytestream_put_le32(&data, channels);
4146 bytestream_put_le64(&data, channel_layout);
4148 bytestream_put_le32(&data, sample_rate);
4149 if (width || height) {
4150 bytestream_put_le32(&data, width);
4151 bytestream_put_le32(&data, height);
4156 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4158 AVRational undef = {0, 1};
4159 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4160 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4161 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4163 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4164 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4165 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4166 stream_sample_aspect_ratio = undef;
4168 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4169 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4170 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4171 frame_sample_aspect_ratio = undef;
4173 if (stream_sample_aspect_ratio.num)
4174 return stream_sample_aspect_ratio;
4176 return frame_sample_aspect_ratio;
4179 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4181 AVRational fr = st->r_frame_rate;
4183 if (st->codec->ticks_per_frame > 1) {
4184 AVRational codec_fr = av_inv_q(st->codec->time_base);
4185 AVRational avg_fr = st->avg_frame_rate;
4186 codec_fr.den *= st->codec->ticks_per_frame;
4187 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4188 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4195 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4198 if (*spec <= '9' && *spec >= '0') /* opt:index */
4199 return strtol(spec, NULL, 0) == st->index;
4200 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4201 *spec == 't') { /* opt:[vasdt] */
4202 enum AVMediaType type;
4205 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4206 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4207 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4208 case 'd': type = AVMEDIA_TYPE_DATA; break;
4209 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4210 default: av_assert0(0);
4212 if (type != st->codec->codec_type)
4214 if (*spec++ == ':') { /* possibly followed by :index */
4215 int i, index = strtol(spec, NULL, 0);
4216 for (i = 0; i < s->nb_streams; i++)
4217 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4218 return i == st->index;
4222 } else if (*spec == 'p' && *(spec + 1) == ':') {
4226 prog_id = strtol(spec, &endptr, 0);
4227 for (i = 0; i < s->nb_programs; i++) {
4228 if (s->programs[i]->id != prog_id)
4231 if (*endptr++ == ':') {
4232 int stream_idx = strtol(endptr, NULL, 0);
4233 return stream_idx >= 0 &&
4234 stream_idx < s->programs[i]->nb_stream_indexes &&
4235 st->index == s->programs[i]->stream_index[stream_idx];
4238 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4239 if (st->index == s->programs[i]->stream_index[j])
4243 } else if (*spec == '#') {
4246 sid = strtol(spec + 1, &endptr, 0);
4248 return st->id == sid;
4249 } else if (!*spec) /* empty specifier, matches everything */
4252 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4253 return AVERROR(EINVAL);
4256 int ff_generate_avci_extradata(AVStream *st)
4258 static const uint8_t avci100_1080p_extradata[] = {
4260 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4261 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4262 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4263 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4264 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4265 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4266 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4267 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4268 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4270 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4273 static const uint8_t avci100_1080i_extradata[] = {
4275 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4276 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4277 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4278 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4279 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4280 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4281 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4282 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4283 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4284 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4285 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4287 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4290 static const uint8_t avci50_1080i_extradata[] = {
4292 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4293 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4294 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4295 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4296 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4297 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4298 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4299 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4300 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4301 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4302 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4304 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4307 static const uint8_t avci100_720p_extradata[] = {
4309 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4310 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4311 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4312 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4313 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4314 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4315 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4316 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4317 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4318 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4320 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4324 const uint8_t *data = NULL;
4327 if (st->codec->width == 1920) {
4328 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4329 data = avci100_1080p_extradata;
4330 size = sizeof(avci100_1080p_extradata);
4332 data = avci100_1080i_extradata;
4333 size = sizeof(avci100_1080i_extradata);
4335 } else if (st->codec->width == 1440) {
4336 data = avci50_1080i_extradata;
4337 size = sizeof(avci50_1080i_extradata);
4338 } else if (st->codec->width == 1280) {
4339 data = avci100_720p_extradata;
4340 size = sizeof(avci100_720p_extradata);
4346 av_freep(&st->codec->extradata);
4347 if (ff_alloc_extradata(st->codec, size))
4348 return AVERROR(ENOMEM);
4349 memcpy(st->codec->extradata, data, size);