2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/pixdesc.h"
36 #include "libavutil/avassert.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/time.h"
41 #include "libavutil/timestamp.h"
43 #include "audiointerleave.h"
55 * various utility functions for use within FFmpeg
58 unsigned avformat_version(void)
60 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
61 return LIBAVFORMAT_VERSION_INT;
64 const char *avformat_configuration(void)
66 return FFMPEG_CONFIGURATION;
69 const char *avformat_license(void)
71 #define LICENSE_PREFIX "libavformat license: "
72 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
75 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
77 static int is_relative(int64_t ts) {
78 return ts > (RELATIVE_TS_BASE - (1LL<<48));
82 * Wrap a given time stamp, if there is an indication for an overflow
85 * @param timestamp the time stamp to wrap
86 * @return resulting time stamp
88 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
90 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
91 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
92 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
93 timestamp < st->pts_wrap_reference)
94 return timestamp + (1ULL<<st->pts_wrap_bits);
95 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
96 timestamp >= st->pts_wrap_reference)
97 return timestamp - (1ULL<<st->pts_wrap_bits);
102 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
103 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
104 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
105 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
107 static AVCodec *find_decoder(AVFormatContext *s, AVStream *st, enum AVCodecID codec_id)
109 if (st->codec->codec)
110 return st->codec->codec;
112 switch(st->codec->codec_type){
113 case AVMEDIA_TYPE_VIDEO:
114 if(s->video_codec) return s->video_codec;
116 case AVMEDIA_TYPE_AUDIO:
117 if(s->audio_codec) return s->audio_codec;
119 case AVMEDIA_TYPE_SUBTITLE:
120 if(s->subtitle_codec) return s->subtitle_codec;
124 return avcodec_find_decoder(codec_id);
127 int av_format_get_probe_score(const AVFormatContext *s)
129 return s->probe_score;
132 /* an arbitrarily chosen "sane" max packet size -- 50M */
133 #define SANE_CHUNK_SIZE (50000000)
135 int ffio_limit(AVIOContext *s, int size)
138 int64_t remaining= s->maxsize - avio_tell(s);
139 if(remaining < size){
140 int64_t newsize= avio_size(s);
141 if(!s->maxsize || s->maxsize<newsize)
142 s->maxsize= newsize - !newsize;
143 remaining= s->maxsize - avio_tell(s);
144 remaining= FFMAX(remaining, 0);
147 if(s->maxsize>=0 && remaining+1 < size){
148 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
156 * Read the data in sane-sized chunks and append to pkt.
157 * Return the number of bytes read or an error.
159 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
161 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
162 int orig_size = pkt->size;
166 int prev_size = pkt->size;
170 * When the caller requests a lot of data, limit it to the amount left
171 * in file or SANE_CHUNK_SIZE when it is not known
174 if (read_size > SANE_CHUNK_SIZE/10) {
175 read_size = ffio_limit(s, read_size);
176 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
178 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
181 ret = av_grow_packet(pkt, read_size);
185 ret = avio_read(s, pkt->data + prev_size, read_size);
186 if (ret != read_size) {
187 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
194 pkt->flags |= AV_PKT_FLAG_CORRUPT;
199 return pkt->size > orig_size ? pkt->size - orig_size : ret;
202 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
207 pkt->pos = avio_tell(s);
209 return append_packet_chunked(s, pkt, size);
212 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
215 return av_get_packet(s, pkt, size);
216 return append_packet_chunked(s, pkt, size);
220 int av_filename_number_test(const char *filename)
223 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
226 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
228 AVProbeData lpd = *pd;
229 AVInputFormat *fmt1 = NULL, *fmt;
230 int score, nodat = 0, score_max=0;
231 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
234 lpd.buf = zerobuffer;
236 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
237 int id3len = ff_id3v2_tag_len(lpd.buf);
238 if (lpd.buf_size > id3len + 16) {
240 lpd.buf_size -= id3len;
246 while ((fmt1 = av_iformat_next(fmt1))) {
247 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
250 if (fmt1->read_probe) {
251 score = fmt1->read_probe(&lpd);
252 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
253 score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
254 } else if (fmt1->extensions) {
255 if (av_match_ext(lpd.filename, fmt1->extensions)) {
256 score = AVPROBE_SCORE_EXTENSION;
259 if (score > score_max) {
262 }else if (score == score_max)
266 score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
267 *score_ret= score_max;
272 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
275 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
276 if(score_ret > *score_max){
277 *score_max= score_ret;
283 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
285 return av_probe_input_format2(pd, is_opened, &score);
288 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
290 static const struct {
291 const char *name; enum AVCodecID id; enum AVMediaType type;
293 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
294 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
295 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
296 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
297 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
298 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
299 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
300 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
301 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
305 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
307 if (fmt && st->request_probe <= score) {
309 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
310 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
311 for (i = 0; fmt_id_type[i].name; i++) {
312 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
313 st->codec->codec_id = fmt_id_type[i].id;
314 st->codec->codec_type = fmt_id_type[i].type;
322 /************************************************************/
323 /* input media file */
325 int av_demuxer_open(AVFormatContext *ic){
328 if (ic->iformat->read_header) {
329 err = ic->iformat->read_header(ic);
334 if (ic->pb && !ic->data_offset)
335 ic->data_offset = avio_tell(ic->pb);
341 int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
342 const char *filename, void *logctx,
343 unsigned int offset, unsigned int max_probe_size)
345 AVProbeData pd = { filename ? filename : "", NULL, -offset };
346 unsigned char *buf = NULL;
348 int ret = 0, probe_size, buf_offset = 0;
351 if (!max_probe_size) {
352 max_probe_size = PROBE_BUF_MAX;
353 } else if (max_probe_size > PROBE_BUF_MAX) {
354 max_probe_size = PROBE_BUF_MAX;
355 } else if (max_probe_size < PROBE_BUF_MIN) {
356 av_log(logctx, AV_LOG_ERROR,
357 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
358 return AVERROR(EINVAL);
361 if (offset >= max_probe_size) {
362 return AVERROR(EINVAL);
365 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
366 if (!av_strcasecmp(mime_type, "audio/aacp")) {
367 *fmt = av_find_input_format("aac");
369 av_freep(&mime_type);
372 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
373 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
375 if (probe_size < offset) {
378 score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
380 /* read probe data */
381 if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0)
383 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
384 /* fail if error was not end of file, otherwise, lower score */
385 if (ret != AVERROR_EOF) {
390 ret = 0; /* error was end of file, nothing read */
392 pd.buf_size = buf_offset += ret;
393 pd.buf = &buf[offset];
395 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
397 /* guess file format */
398 *fmt = av_probe_input_format2(&pd, 1, &score);
400 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
401 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
403 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
405 FILE *f = fopen("probestat.tmp", "ab");
406 fprintf(f, "probe_size:%d format:%s score:%d filename:%s\n", probe_size, (*fmt)->name, score, filename);
414 return AVERROR_INVALIDDATA;
417 /* rewind. reuse probe buffer to avoid seeking */
418 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
420 return ret < 0 ? ret : score;
423 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
424 const char *filename, void *logctx,
425 unsigned int offset, unsigned int max_probe_size)
427 int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size);
428 return ret < 0 ? ret : 0;
432 /* open input file and probe the format if necessary */
433 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
436 AVProbeData pd = {filename, NULL, 0};
437 int score = AVPROBE_SCORE_RETRY;
440 s->flags |= AVFMT_FLAG_CUSTOM_IO;
442 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
443 else if (s->iformat->flags & AVFMT_NOFILE)
444 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
445 "will be ignored with AVFMT_NOFILE format.\n");
449 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
450 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
453 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
454 &s->interrupt_callback, options)) < 0)
458 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
461 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
462 AVPacketList **plast_pktl){
463 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
468 (*plast_pktl)->next = pktl;
470 *packet_buffer = pktl;
472 /* add the packet in the buffered packet list */
478 int avformat_queue_attached_pictures(AVFormatContext *s)
481 for (i = 0; i < s->nb_streams; i++)
482 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
483 s->streams[i]->discard < AVDISCARD_ALL) {
484 AVPacket copy = s->streams[i]->attached_pic;
485 copy.buf = av_buffer_ref(copy.buf);
487 return AVERROR(ENOMEM);
489 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
494 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
496 AVFormatContext *s = *ps;
498 AVDictionary *tmp = NULL;
499 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
501 if (!s && !(s = avformat_alloc_context()))
502 return AVERROR(ENOMEM);
504 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
505 return AVERROR(EINVAL);
511 av_dict_copy(&tmp, *options, 0);
513 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
516 if ((ret = init_input(s, filename, &tmp)) < 0)
518 s->probe_score = ret;
519 avio_skip(s->pb, s->skip_initial_bytes);
521 /* check filename in case an image number is expected */
522 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
523 if (!av_filename_number_test(filename)) {
524 ret = AVERROR(EINVAL);
529 s->duration = s->start_time = AV_NOPTS_VALUE;
530 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
532 /* allocate private data */
533 if (s->iformat->priv_data_size > 0) {
534 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
535 ret = AVERROR(ENOMEM);
538 if (s->iformat->priv_class) {
539 *(const AVClass**)s->priv_data = s->iformat->priv_class;
540 av_opt_set_defaults(s->priv_data);
541 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
546 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
548 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
550 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
551 if ((ret = s->iformat->read_header(s)) < 0)
554 if (id3v2_extra_meta) {
555 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
556 !strcmp(s->iformat->name, "tta")) {
557 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
560 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
562 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
564 if ((ret = avformat_queue_attached_pictures(s)) < 0)
567 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
568 s->data_offset = avio_tell(s->pb);
570 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
573 av_dict_free(options);
580 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
582 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
584 avformat_free_context(s);
589 /*******************************************************/
591 static void force_codec_ids(AVFormatContext *s, AVStream *st)
593 switch(st->codec->codec_type){
594 case AVMEDIA_TYPE_VIDEO:
595 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
597 case AVMEDIA_TYPE_AUDIO:
598 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
600 case AVMEDIA_TYPE_SUBTITLE:
601 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
606 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
608 if(st->request_probe>0){
609 AVProbeData *pd = &st->probe_data;
611 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
615 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
617 av_log(s, AV_LOG_WARNING,
618 "Failed to reallocate probe buffer for stream %d\n",
623 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
624 pd->buf_size += pkt->size;
625 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
628 st->probe_packets = 0;
630 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
635 end= s->raw_packet_buffer_remaining_size <= 0
636 || st->probe_packets<=0;
638 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
639 int score= set_codec_from_probe_data(s, st, pd);
640 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
644 st->request_probe= -1;
645 if(st->codec->codec_id != AV_CODEC_ID_NONE){
646 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
648 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
650 force_codec_ids(s, st);
656 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
658 int64_t ref = pkt->dts;
659 int i, pts_wrap_behavior;
660 int64_t pts_wrap_reference;
661 AVProgram *first_program;
663 if (ref == AV_NOPTS_VALUE)
665 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
667 ref &= (1LL<<st->pts_wrap_bits)-1;
669 // reference time stamp should be 60 s before first time stamp
670 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
671 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
672 pts_wrap_behavior = (ref < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
673 (ref < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
674 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
676 first_program = av_find_program_from_stream(s, NULL, stream_index);
678 if (!first_program) {
679 int default_stream_index = av_find_default_stream_index(s);
680 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
681 for (i=0; i<s->nb_streams; i++) {
682 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
683 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
687 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
688 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
692 AVProgram *program = first_program;
694 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
695 pts_wrap_reference = program->pts_wrap_reference;
696 pts_wrap_behavior = program->pts_wrap_behavior;
699 program = av_find_program_from_stream(s, program, stream_index);
702 // update every program with differing pts_wrap_reference
703 program = first_program;
705 if (program->pts_wrap_reference != pts_wrap_reference) {
706 for (i=0; i<program->nb_stream_indexes; i++) {
707 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
708 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
711 program->pts_wrap_reference = pts_wrap_reference;
712 program->pts_wrap_behavior = pts_wrap_behavior;
714 program = av_find_program_from_stream(s, program, stream_index);
720 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
726 AVPacketList *pktl = s->raw_packet_buffer;
730 st = s->streams[pkt->stream_index];
731 if (s->raw_packet_buffer_remaining_size <= 0) {
732 if ((err = probe_codec(s, st, NULL)) < 0)
735 if(st->request_probe <= 0){
736 s->raw_packet_buffer = pktl->next;
737 s->raw_packet_buffer_remaining_size += pkt->size;
746 ret= s->iformat->read_packet(s, pkt);
748 if (!pktl || ret == AVERROR(EAGAIN))
750 for (i = 0; i < s->nb_streams; i++) {
752 if (st->probe_packets) {
753 if ((err = probe_codec(s, st, NULL)) < 0)
756 av_assert0(st->request_probe <= 0);
761 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
762 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
763 av_log(s, AV_LOG_WARNING,
764 "Dropped corrupted packet (stream = %d)\n",
770 if(pkt->stream_index >= (unsigned)s->nb_streams){
771 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
775 st= s->streams[pkt->stream_index];
777 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
778 // correct first time stamps to negative values
779 if (!is_relative(st->first_dts))
780 st->first_dts = wrap_timestamp(st, st->first_dts);
781 if (!is_relative(st->start_time))
782 st->start_time = wrap_timestamp(st, st->start_time);
783 if (!is_relative(st->cur_dts))
784 st->cur_dts = wrap_timestamp(st, st->cur_dts);
787 pkt->dts = wrap_timestamp(st, pkt->dts);
788 pkt->pts = wrap_timestamp(st, pkt->pts);
790 force_codec_ids(s, st);
792 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
793 if (s->use_wallclock_as_timestamps)
794 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
796 if(!pktl && st->request_probe <= 0)
799 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
800 s->raw_packet_buffer_remaining_size -= pkt->size;
802 if ((err = probe_codec(s, st, pkt)) < 0)
807 #if FF_API_READ_PACKET
808 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
810 return ff_read_packet(s, pkt);
815 /**********************************************************/
817 static int determinable_frame_size(AVCodecContext *avctx)
819 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
820 avctx->codec_id == AV_CODEC_ID_MP1 ||
821 avctx->codec_id == AV_CODEC_ID_MP2 ||
822 avctx->codec_id == AV_CODEC_ID_MP3/* ||
823 avctx->codec_id == AV_CODEC_ID_CELT*/)
829 * Get the number of samples of an audio frame. Return -1 on error.
831 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
835 /* give frame_size priority if demuxing */
836 if (!mux && enc->frame_size > 1)
837 return enc->frame_size;
839 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
842 /* Fall back on using frame_size if muxing. */
843 if (enc->frame_size > 1)
844 return enc->frame_size;
846 //For WMA we currently have no other means to calculate duration thus we
847 //do it here by assuming CBR, which is true for all known cases.
848 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
849 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
850 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
858 * Return the frame duration in seconds. Return 0 if not available.
860 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
861 AVCodecParserContext *pc, AVPacket *pkt)
867 switch(st->codec->codec_type) {
868 case AVMEDIA_TYPE_VIDEO:
869 if (st->r_frame_rate.num && !pc) {
870 *pnum = st->r_frame_rate.den;
871 *pden = st->r_frame_rate.num;
872 } else if(st->time_base.num*1000LL > st->time_base.den) {
873 *pnum = st->time_base.num;
874 *pden = st->time_base.den;
875 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
876 *pnum = st->codec->time_base.num;
877 *pden = st->codec->time_base.den;
878 if (pc && pc->repeat_pict) {
879 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
880 *pden /= 1 + pc->repeat_pict;
882 *pnum *= 1 + pc->repeat_pict;
884 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
885 //Thus if we have no parser in such case leave duration undefined.
886 if(st->codec->ticks_per_frame>1 && !pc){
891 case AVMEDIA_TYPE_AUDIO:
892 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
893 if (frame_size <= 0 || st->codec->sample_rate <= 0)
896 *pden = st->codec->sample_rate;
903 static int is_intra_only(AVCodecContext *enc){
904 const AVCodecDescriptor *desc;
906 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
909 desc = av_codec_get_codec_descriptor(enc);
911 desc = avcodec_descriptor_get(enc->codec_id);
912 av_codec_set_codec_descriptor(enc, desc);
915 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
919 static int has_decode_delay_been_guessed(AVStream *st)
921 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
922 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
924 #if CONFIG_H264_DECODER
925 if(st->codec->has_b_frames &&
926 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
929 if(st->codec->has_b_frames<3)
930 return st->nb_decoded_frames >= 7;
931 else if(st->codec->has_b_frames<4)
932 return st->nb_decoded_frames >= 18;
934 return st->nb_decoded_frames >= 20;
937 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
941 if (pktl == s->packet_buffer_end)
942 return s->parse_queue;
946 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
947 int64_t dts, int64_t pts, AVPacket *pkt)
949 AVStream *st= s->streams[stream_index];
950 AVPacketList *pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
951 int64_t pts_buffer[MAX_REORDER_DELAY+1];
955 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
958 delay = st->codec->has_b_frames;
959 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
961 shift = st->first_dts - RELATIVE_TS_BASE;
963 for (i=0; i<MAX_REORDER_DELAY+1; i++)
964 pts_buffer[i] = AV_NOPTS_VALUE;
966 if (is_relative(pts))
969 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
970 if(pktl->pkt.stream_index != stream_index)
972 if(is_relative(pktl->pkt.pts))
973 pktl->pkt.pts += shift;
975 if(is_relative(pktl->pkt.dts))
976 pktl->pkt.dts += shift;
978 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
979 st->start_time= pktl->pkt.pts;
981 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
982 pts_buffer[0]= pktl->pkt.pts;
983 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
984 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
985 if(pktl->pkt.dts == AV_NOPTS_VALUE)
986 pktl->pkt.dts= pts_buffer[0];
990 if (st->start_time == AV_NOPTS_VALUE)
991 st->start_time = pts;
994 static void update_initial_durations(AVFormatContext *s, AVStream *st,
995 int stream_index, int duration)
997 AVPacketList *pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
998 int64_t cur_dts= RELATIVE_TS_BASE;
1000 if(st->first_dts != AV_NOPTS_VALUE){
1001 if (st->update_initial_durations_done)
1003 st->update_initial_durations_done = 1;
1004 cur_dts= st->first_dts;
1005 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1006 if(pktl->pkt.stream_index == stream_index){
1007 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1009 cur_dts -= duration;
1012 if(pktl && pktl->pkt.dts != st->first_dts) {
1013 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
1014 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1018 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1021 pktl= s->packet_buffer ? s->packet_buffer : s->parse_queue;
1022 st->first_dts = cur_dts;
1023 }else if(st->cur_dts != RELATIVE_TS_BASE)
1026 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1027 if(pktl->pkt.stream_index != stream_index)
1029 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1030 && !pktl->pkt.duration){
1031 pktl->pkt.dts= cur_dts;
1032 if(!st->codec->has_b_frames)
1033 pktl->pkt.pts= cur_dts;
1034 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1035 pktl->pkt.duration = duration;
1038 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1041 st->cur_dts= cur_dts;
1044 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1045 AVCodecParserContext *pc, AVPacket *pkt)
1047 int num, den, presentation_delayed, delay, i;
1050 if (s->flags & AVFMT_FLAG_NOFILLIN)
1053 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1054 pkt->dts= AV_NOPTS_VALUE;
1056 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1057 && !st->codec->has_b_frames)
1058 //FIXME Set low_delay = 0 when has_b_frames = 1
1059 st->codec->has_b_frames = 1;
1061 /* do we have a video B-frame ? */
1062 delay= st->codec->has_b_frames;
1063 presentation_delayed = 0;
1065 /* XXX: need has_b_frame, but cannot get it if the codec is
1068 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1069 presentation_delayed = 1;
1071 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1072 st->pts_wrap_bits < 63 &&
1073 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1074 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1075 pkt->dts -= 1LL<<st->pts_wrap_bits;
1077 pkt->pts += 1LL<<st->pts_wrap_bits;
1080 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1081 // we take the conservative approach and discard both
1082 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1083 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1084 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1085 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1086 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1087 pkt->dts= AV_NOPTS_VALUE;
1090 if (pkt->duration == 0) {
1091 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1093 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1096 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1097 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1099 /* correct timestamps with byte offset if demuxers only have timestamps
1100 on packet boundaries */
1101 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1102 /* this will estimate bitrate based on this frame's duration and size */
1103 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1104 if(pkt->pts != AV_NOPTS_VALUE)
1106 if(pkt->dts != AV_NOPTS_VALUE)
1110 /* This may be redundant, but it should not hurt. */
1111 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1112 presentation_delayed = 1;
1114 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1115 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1116 /* interpolate PTS and DTS if they are not present */
1117 //We skip H264 currently because delay and has_b_frames are not reliably set
1118 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1119 if (presentation_delayed) {
1120 /* DTS = decompression timestamp */
1121 /* PTS = presentation timestamp */
1122 if (pkt->dts == AV_NOPTS_VALUE)
1123 pkt->dts = st->last_IP_pts;
1124 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1125 if (pkt->dts == AV_NOPTS_VALUE)
1126 pkt->dts = st->cur_dts;
1128 /* this is tricky: the dts must be incremented by the duration
1129 of the frame we are displaying, i.e. the last I- or P-frame */
1130 if (st->last_IP_duration == 0)
1131 st->last_IP_duration = pkt->duration;
1132 if(pkt->dts != AV_NOPTS_VALUE)
1133 st->cur_dts = pkt->dts + st->last_IP_duration;
1134 st->last_IP_duration = pkt->duration;
1135 st->last_IP_pts= pkt->pts;
1136 /* cannot compute PTS if not present (we can compute it only
1137 by knowing the future */
1138 } else if (pkt->pts != AV_NOPTS_VALUE ||
1139 pkt->dts != AV_NOPTS_VALUE ||
1141 int duration = pkt->duration;
1143 /* presentation is not delayed : PTS and DTS are the same */
1144 if (pkt->pts == AV_NOPTS_VALUE)
1145 pkt->pts = pkt->dts;
1146 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1148 if (pkt->pts == AV_NOPTS_VALUE)
1149 pkt->pts = st->cur_dts;
1150 pkt->dts = pkt->pts;
1151 if (pkt->pts != AV_NOPTS_VALUE)
1152 st->cur_dts = pkt->pts + duration;
1156 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1157 st->pts_buffer[0]= pkt->pts;
1158 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1159 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1160 if(pkt->dts == AV_NOPTS_VALUE)
1161 pkt->dts= st->pts_buffer[0];
1163 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1164 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1166 if(pkt->dts > st->cur_dts)
1167 st->cur_dts = pkt->dts;
1169 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1170 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1173 if (is_intra_only(st->codec))
1174 pkt->flags |= AV_PKT_FLAG_KEY;
1176 pkt->convergence_duration = pc->convergence_duration;
1179 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1182 AVPacketList *pktl = *pkt_buf;
1183 *pkt_buf = pktl->next;
1184 av_free_packet(&pktl->pkt);
1187 *pkt_buf_end = NULL;
1191 * Parse a packet, add all split parts to parse_queue
1193 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1195 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1197 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1198 AVStream *st = s->streams[stream_index];
1199 uint8_t *data = pkt ? pkt->data : NULL;
1200 int size = pkt ? pkt->size : 0;
1201 int ret = 0, got_output = 0;
1204 av_init_packet(&flush_pkt);
1207 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1208 // preserve 0-size sync packets
1209 compute_pkt_fields(s, st, st->parser, pkt);
1212 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1215 av_init_packet(&out_pkt);
1216 len = av_parser_parse2(st->parser, st->codec,
1217 &out_pkt.data, &out_pkt.size, data, size,
1218 pkt->pts, pkt->dts, pkt->pos);
1220 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1222 /* increment read pointer */
1226 got_output = !!out_pkt.size;
1231 if (pkt->side_data) {
1232 out_pkt.side_data = pkt->side_data;
1233 out_pkt.side_data_elems = pkt->side_data_elems;
1234 pkt->side_data = NULL;
1235 pkt->side_data_elems = 0;
1238 /* set the duration */
1239 out_pkt.duration = 0;
1240 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1241 if (st->codec->sample_rate > 0) {
1242 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1243 (AVRational){ 1, st->codec->sample_rate },
1247 } else if (st->codec->time_base.num != 0 &&
1248 st->codec->time_base.den != 0) {
1249 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1250 st->codec->time_base,
1255 out_pkt.stream_index = st->index;
1256 out_pkt.pts = st->parser->pts;
1257 out_pkt.dts = st->parser->dts;
1258 out_pkt.pos = st->parser->pos;
1260 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1261 out_pkt.pos = st->parser->frame_offset;
1263 if (st->parser->key_frame == 1 ||
1264 (st->parser->key_frame == -1 &&
1265 st->parser->pict_type == AV_PICTURE_TYPE_I))
1266 out_pkt.flags |= AV_PKT_FLAG_KEY;
1268 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1269 out_pkt.flags |= AV_PKT_FLAG_KEY;
1271 compute_pkt_fields(s, st, st->parser, &out_pkt);
1273 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1274 out_pkt.buf = pkt->buf;
1276 #if FF_API_DESTRUCT_PACKET
1277 FF_DISABLE_DEPRECATION_WARNINGS
1278 out_pkt.destruct = pkt->destruct;
1279 pkt->destruct = NULL;
1280 FF_ENABLE_DEPRECATION_WARNINGS
1283 if ((ret = av_dup_packet(&out_pkt)) < 0)
1286 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1287 av_free_packet(&out_pkt);
1288 ret = AVERROR(ENOMEM);
1294 /* end of the stream => close and free the parser */
1295 if (pkt == &flush_pkt) {
1296 av_parser_close(st->parser);
1301 av_free_packet(pkt);
1305 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1306 AVPacketList **pkt_buffer_end,
1310 av_assert0(*pkt_buffer);
1313 *pkt_buffer = pktl->next;
1315 *pkt_buffer_end = NULL;
1320 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1322 int ret = 0, i, got_packet = 0;
1324 av_init_packet(pkt);
1326 while (!got_packet && !s->parse_queue) {
1330 /* read next packet */
1331 ret = ff_read_packet(s, &cur_pkt);
1333 if (ret == AVERROR(EAGAIN))
1335 /* flush the parsers */
1336 for(i = 0; i < s->nb_streams; i++) {
1338 if (st->parser && st->need_parsing)
1339 parse_packet(s, NULL, st->index);
1341 /* all remaining packets are now in parse_queue =>
1342 * really terminate parsing */
1346 st = s->streams[cur_pkt.stream_index];
1348 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1349 cur_pkt.dts != AV_NOPTS_VALUE &&
1350 cur_pkt.pts < cur_pkt.dts) {
1351 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1352 cur_pkt.stream_index,
1353 av_ts2str(cur_pkt.pts),
1354 av_ts2str(cur_pkt.dts),
1357 if (s->debug & FF_FDEBUG_TS)
1358 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1359 cur_pkt.stream_index,
1360 av_ts2str(cur_pkt.pts),
1361 av_ts2str(cur_pkt.dts),
1366 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1367 st->parser = av_parser_init(st->codec->codec_id);
1369 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1370 "%s, packets or times may be invalid.\n",
1371 avcodec_get_name(st->codec->codec_id));
1372 /* no parser available: just output the raw packets */
1373 st->need_parsing = AVSTREAM_PARSE_NONE;
1374 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1375 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1376 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1377 st->parser->flags |= PARSER_FLAG_ONCE;
1378 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1379 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1383 if (!st->need_parsing || !st->parser) {
1384 /* no parsing needed: we just output the packet as is */
1386 compute_pkt_fields(s, st, NULL, pkt);
1387 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1388 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1389 ff_reduce_index(s, st->index);
1390 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1393 } else if (st->discard < AVDISCARD_ALL) {
1394 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1398 av_free_packet(&cur_pkt);
1400 if (pkt->flags & AV_PKT_FLAG_KEY)
1401 st->skip_to_keyframe = 0;
1402 if (st->skip_to_keyframe) {
1403 av_free_packet(&cur_pkt);
1411 if (!got_packet && s->parse_queue)
1412 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1415 AVStream *st = s->streams[pkt->stream_index];
1416 if (st->skip_samples) {
1417 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1419 AV_WL32(p, st->skip_samples);
1420 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1422 st->skip_samples = 0;
1426 if(ret >= 0 && !(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1427 av_packet_merge_side_data(pkt);
1429 if(s->debug & FF_FDEBUG_TS)
1430 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1432 av_ts2str(pkt->pts),
1433 av_ts2str(pkt->dts),
1441 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1443 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1449 ret = s->packet_buffer ?
1450 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1451 read_frame_internal(s, pkt);
1458 AVPacketList *pktl = s->packet_buffer;
1461 AVPacket *next_pkt = &pktl->pkt;
1463 if (next_pkt->dts != AV_NOPTS_VALUE) {
1464 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1465 // last dts seen for this stream. if any of packets following
1466 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1467 int64_t last_dts = next_pkt->dts;
1468 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1469 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1470 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1471 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1472 next_pkt->pts = pktl->pkt.dts;
1474 if (last_dts != AV_NOPTS_VALUE) {
1475 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1476 last_dts = pktl->pkt.dts;
1481 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1482 // Fixing the last reference frame had none pts issue (For MXF etc).
1483 // We only do this when
1485 // 2. we are not able to resolve a pts value for current packet.
1486 // 3. the packets for this stream at the end of the files had valid dts.
1487 next_pkt->pts = last_dts + next_pkt->duration;
1489 pktl = s->packet_buffer;
1492 /* read packet from packet buffer, if there is data */
1493 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1494 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1495 ret = read_from_packet_buffer(&s->packet_buffer,
1496 &s->packet_buffer_end, pkt);
1501 ret = read_frame_internal(s, pkt);
1503 if (pktl && ret != AVERROR(EAGAIN)) {
1510 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1511 &s->packet_buffer_end)) < 0)
1512 return AVERROR(ENOMEM);
1517 st = s->streams[pkt->stream_index];
1518 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1519 ff_reduce_index(s, st->index);
1520 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1523 if (is_relative(pkt->dts))
1524 pkt->dts -= RELATIVE_TS_BASE;
1525 if (is_relative(pkt->pts))
1526 pkt->pts -= RELATIVE_TS_BASE;
1531 /* XXX: suppress the packet queue */
1532 static void flush_packet_queue(AVFormatContext *s)
1534 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1535 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1536 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1538 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1541 /*******************************************************/
1544 int av_find_default_stream_index(AVFormatContext *s)
1546 int first_audio_index = -1;
1550 if (s->nb_streams <= 0)
1552 for(i = 0; i < s->nb_streams; i++) {
1554 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1555 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1558 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1559 first_audio_index = i;
1561 return first_audio_index >= 0 ? first_audio_index : 0;
1565 * Flush the frame reader.
1567 void ff_read_frame_flush(AVFormatContext *s)
1572 flush_packet_queue(s);
1574 /* for each stream, reset read state */
1575 for(i = 0; i < s->nb_streams; i++) {
1579 av_parser_close(st->parser);
1582 st->last_IP_pts = AV_NOPTS_VALUE;
1583 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1584 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1586 st->probe_packets = MAX_PROBE_PACKETS;
1588 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1589 st->pts_buffer[j]= AV_NOPTS_VALUE;
1593 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1597 for(i = 0; i < s->nb_streams; i++) {
1598 AVStream *st = s->streams[i];
1600 st->cur_dts = av_rescale(timestamp,
1601 st->time_base.den * (int64_t)ref_st->time_base.num,
1602 st->time_base.num * (int64_t)ref_st->time_base.den);
1606 void ff_reduce_index(AVFormatContext *s, int stream_index)
1608 AVStream *st= s->streams[stream_index];
1609 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1611 if((unsigned)st->nb_index_entries >= max_entries){
1613 for(i=0; 2*i<st->nb_index_entries; i++)
1614 st->index_entries[i]= st->index_entries[2*i];
1615 st->nb_index_entries= i;
1619 int ff_add_index_entry(AVIndexEntry **index_entries,
1620 int *nb_index_entries,
1621 unsigned int *index_entries_allocated_size,
1622 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1624 AVIndexEntry *entries, *ie;
1627 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1630 if(timestamp == AV_NOPTS_VALUE)
1631 return AVERROR(EINVAL);
1633 if (size < 0 || size > 0x3FFFFFFF)
1634 return AVERROR(EINVAL);
1636 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1637 timestamp -= RELATIVE_TS_BASE;
1639 entries = av_fast_realloc(*index_entries,
1640 index_entries_allocated_size,
1641 (*nb_index_entries + 1) *
1642 sizeof(AVIndexEntry));
1646 *index_entries= entries;
1648 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1651 index= (*nb_index_entries)++;
1652 ie= &entries[index];
1653 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1655 ie= &entries[index];
1656 if(ie->timestamp != timestamp){
1657 if(ie->timestamp <= timestamp)
1659 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1660 (*nb_index_entries)++;
1661 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1662 distance= ie->min_distance;
1666 ie->timestamp = timestamp;
1667 ie->min_distance= distance;
1674 int av_add_index_entry(AVStream *st,
1675 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1677 timestamp = wrap_timestamp(st, timestamp);
1678 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1679 &st->index_entries_allocated_size, pos,
1680 timestamp, size, distance, flags);
1683 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1684 int64_t wanted_timestamp, int flags)
1692 //optimize appending index entries at the end
1693 if(b && entries[b-1].timestamp < wanted_timestamp)
1698 timestamp = entries[m].timestamp;
1699 if(timestamp >= wanted_timestamp)
1701 if(timestamp <= wanted_timestamp)
1704 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1706 if(!(flags & AVSEEK_FLAG_ANY)){
1707 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1708 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1717 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1720 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1721 wanted_timestamp, flags);
1724 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1725 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1727 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1728 if (stream_index >= 0)
1729 ts = wrap_timestamp(s->streams[stream_index], ts);
1733 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1735 AVInputFormat *avif= s->iformat;
1736 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1737 int64_t ts_min, ts_max, ts;
1742 if (stream_index < 0)
1745 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1748 ts_min= AV_NOPTS_VALUE;
1749 pos_limit= -1; //gcc falsely says it may be uninitialized
1751 st= s->streams[stream_index];
1752 if(st->index_entries){
1755 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()
1756 index= FFMAX(index, 0);
1757 e= &st->index_entries[index];
1759 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1761 ts_min= e->timestamp;
1762 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1763 pos_min, av_ts2str(ts_min));
1765 av_assert1(index==0);
1768 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1769 av_assert0(index < st->nb_index_entries);
1771 e= &st->index_entries[index];
1772 av_assert1(e->timestamp >= target_ts);
1774 ts_max= e->timestamp;
1775 pos_limit= pos_max - e->min_distance;
1776 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1777 pos_max, pos_limit, av_ts2str(ts_max));
1781 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1786 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1789 ff_read_frame_flush(s);
1790 ff_update_cur_dts(s, st, ts);
1795 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1796 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1799 int64_t limit, ts_max;
1800 int64_t filesize = avio_size(s->pb);
1801 int64_t pos_max = filesize - 1;
1804 pos_max = FFMAX(0, (pos_max) - step);
1805 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1807 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1808 if (ts_max == AV_NOPTS_VALUE)
1812 int64_t tmp_pos = pos_max + 1;
1813 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1814 if(tmp_ts == AV_NOPTS_VALUE)
1816 av_assert0(tmp_pos > pos_max);
1819 if(tmp_pos >= filesize)
1831 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1832 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1833 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1834 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1841 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1843 if(ts_min == AV_NOPTS_VALUE){
1844 pos_min = s->data_offset;
1845 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1846 if (ts_min == AV_NOPTS_VALUE)
1850 if(ts_min >= target_ts){
1855 if(ts_max == AV_NOPTS_VALUE){
1856 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1861 if(ts_max <= target_ts){
1866 if(ts_min > ts_max){
1868 }else if(ts_min == ts_max){
1873 while (pos_min < pos_limit) {
1874 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1875 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1876 assert(pos_limit <= pos_max);
1879 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1880 // interpolate position (better than dichotomy)
1881 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1882 + pos_min - approximate_keyframe_distance;
1883 }else if(no_change==1){
1884 // bisection, if interpolation failed to change min or max pos last time
1885 pos = (pos_min + pos_limit)>>1;
1887 /* linear search if bisection failed, can only happen if there
1888 are very few or no keyframes between min/max */
1893 else if(pos > pos_limit)
1897 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1902 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1903 pos_min, pos, pos_max,
1904 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1905 pos_limit, start_pos, no_change);
1906 if(ts == AV_NOPTS_VALUE){
1907 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1910 assert(ts != AV_NOPTS_VALUE);
1911 if (target_ts <= ts) {
1912 pos_limit = start_pos - 1;
1916 if (target_ts >= ts) {
1922 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1923 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1926 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1928 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1929 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1930 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1936 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1937 int64_t pos_min, pos_max;
1939 pos_min = s->data_offset;
1940 pos_max = avio_size(s->pb) - 1;
1942 if (pos < pos_min) pos= pos_min;
1943 else if(pos > pos_max) pos= pos_max;
1945 avio_seek(s->pb, pos, SEEK_SET);
1947 s->io_repositioned = 1;
1952 static int seek_frame_generic(AVFormatContext *s,
1953 int stream_index, int64_t timestamp, int flags)
1960 st = s->streams[stream_index];
1962 index = av_index_search_timestamp(st, timestamp, flags);
1964 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1967 if(index < 0 || index==st->nb_index_entries-1){
1971 if(st->nb_index_entries){
1972 av_assert0(st->index_entries);
1973 ie= &st->index_entries[st->nb_index_entries-1];
1974 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1976 ff_update_cur_dts(s, st, ie->timestamp);
1978 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1984 read_status = av_read_frame(s, &pkt);
1985 } while (read_status == AVERROR(EAGAIN));
1986 if (read_status < 0)
1988 av_free_packet(&pkt);
1989 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1990 if(pkt.flags & AV_PKT_FLAG_KEY)
1992 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1993 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);
1998 index = av_index_search_timestamp(st, timestamp, flags);
2003 ff_read_frame_flush(s);
2004 if (s->iformat->read_seek){
2005 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2008 ie = &st->index_entries[index];
2009 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2011 ff_update_cur_dts(s, st, ie->timestamp);
2016 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2017 int64_t timestamp, int flags)
2022 if (flags & AVSEEK_FLAG_BYTE) {
2023 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2025 ff_read_frame_flush(s);
2026 return seek_frame_byte(s, stream_index, timestamp, flags);
2029 if(stream_index < 0){
2030 stream_index= av_find_default_stream_index(s);
2031 if(stream_index < 0)
2034 st= s->streams[stream_index];
2035 /* timestamp for default must be expressed in AV_TIME_BASE units */
2036 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2039 /* first, we try the format specific seek */
2040 if (s->iformat->read_seek) {
2041 ff_read_frame_flush(s);
2042 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2049 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2050 ff_read_frame_flush(s);
2051 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2052 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2053 ff_read_frame_flush(s);
2054 return seek_frame_generic(s, stream_index, timestamp, flags);
2060 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2064 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2065 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2066 if ((flags & AVSEEK_FLAG_BACKWARD))
2070 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2071 flags & ~AVSEEK_FLAG_BACKWARD);
2074 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2077 ret = avformat_queue_attached_pictures(s);
2082 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2084 if(min_ts > ts || max_ts < ts)
2086 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2087 return AVERROR(EINVAL);
2090 flags |= AVSEEK_FLAG_ANY;
2091 flags &= ~AVSEEK_FLAG_BACKWARD;
2093 if (s->iformat->read_seek2) {
2095 ff_read_frame_flush(s);
2097 if (stream_index == -1 && s->nb_streams == 1) {
2098 AVRational time_base = s->streams[0]->time_base;
2099 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2100 min_ts = av_rescale_rnd(min_ts, time_base.den,
2101 time_base.num * (int64_t)AV_TIME_BASE,
2102 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2103 max_ts = av_rescale_rnd(max_ts, time_base.den,
2104 time_base.num * (int64_t)AV_TIME_BASE,
2105 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2108 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2111 ret = avformat_queue_attached_pictures(s);
2115 if(s->iformat->read_timestamp){
2116 //try to seek via read_timestamp()
2119 // Fall back on old API if new is not implemented but old is.
2120 // Note the old API has somewhat different semantics.
2121 if (s->iformat->read_seek || 1) {
2122 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2123 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2124 if (ret<0 && ts != min_ts && max_ts != ts) {
2125 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2127 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2132 // try some generic seek like seek_frame_generic() but with new ts semantics
2133 return -1; //unreachable
2136 /*******************************************************/
2139 * Return TRUE if the stream has accurate duration in any stream.
2141 * @return TRUE if the stream has accurate duration for at least one component.
2143 static int has_duration(AVFormatContext *ic)
2148 for(i = 0;i < ic->nb_streams; i++) {
2149 st = ic->streams[i];
2150 if (st->duration != AV_NOPTS_VALUE)
2153 if (ic->duration != AV_NOPTS_VALUE)
2159 * Estimate the stream timings from the one of each components.
2161 * Also computes the global bitrate if possible.
2163 static void update_stream_timings(AVFormatContext *ic)
2165 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2166 int64_t duration, duration1, filesize;
2171 start_time = INT64_MAX;
2172 start_time_text = INT64_MAX;
2173 end_time = INT64_MIN;
2174 duration = INT64_MIN;
2175 for(i = 0;i < ic->nb_streams; i++) {
2176 st = ic->streams[i];
2177 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2178 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2179 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2180 if (start_time1 < start_time_text)
2181 start_time_text = start_time1;
2183 start_time = FFMIN(start_time, start_time1);
2184 end_time1 = AV_NOPTS_VALUE;
2185 if (st->duration != AV_NOPTS_VALUE) {
2186 end_time1 = start_time1
2187 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2188 end_time = FFMAX(end_time, end_time1);
2190 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2191 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2192 p->start_time = start_time1;
2193 if(p->end_time < end_time1)
2194 p->end_time = end_time1;
2197 if (st->duration != AV_NOPTS_VALUE) {
2198 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2199 duration = FFMAX(duration, duration1);
2202 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2203 start_time = start_time_text;
2204 else if(start_time > start_time_text)
2205 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2207 if (start_time != INT64_MAX) {
2208 ic->start_time = start_time;
2209 if (end_time != INT64_MIN) {
2210 if (ic->nb_programs) {
2211 for (i=0; i<ic->nb_programs; i++) {
2212 p = ic->programs[i];
2213 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2214 duration = FFMAX(duration, p->end_time - p->start_time);
2217 duration = FFMAX(duration, end_time - start_time);
2220 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2221 ic->duration = duration;
2223 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2224 /* compute the bitrate */
2225 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2226 (double)ic->duration;
2227 if (bitrate >= 0 && bitrate <= INT_MAX)
2228 ic->bit_rate = bitrate;
2232 static void fill_all_stream_timings(AVFormatContext *ic)
2237 update_stream_timings(ic);
2238 for(i = 0;i < ic->nb_streams; i++) {
2239 st = ic->streams[i];
2240 if (st->start_time == AV_NOPTS_VALUE) {
2241 if(ic->start_time != AV_NOPTS_VALUE)
2242 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2243 if(ic->duration != AV_NOPTS_VALUE)
2244 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2249 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2251 int64_t filesize, duration;
2252 int i, show_warning = 0;
2255 /* if bit_rate is already set, we believe it */
2256 if (ic->bit_rate <= 0) {
2258 for(i=0;i<ic->nb_streams;i++) {
2259 st = ic->streams[i];
2260 if (st->codec->bit_rate > 0) {
2261 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2265 bit_rate += st->codec->bit_rate;
2268 ic->bit_rate = bit_rate;
2271 /* if duration is already set, we believe it */
2272 if (ic->duration == AV_NOPTS_VALUE &&
2273 ic->bit_rate != 0) {
2274 filesize = ic->pb ? avio_size(ic->pb) : 0;
2276 for(i = 0; i < ic->nb_streams; i++) {
2277 st = ic->streams[i];
2278 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2279 && st->duration == AV_NOPTS_VALUE) {
2280 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2281 st->duration = duration;
2288 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2291 #define DURATION_MAX_READ_SIZE 250000LL
2292 #define DURATION_MAX_RETRY 4
2294 /* only usable for MPEG-PS streams */
2295 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2297 AVPacket pkt1, *pkt = &pkt1;
2299 int read_size, i, ret;
2301 int64_t filesize, offset, duration;
2304 /* flush packet queue */
2305 flush_packet_queue(ic);
2307 for (i=0; i<ic->nb_streams; i++) {
2308 st = ic->streams[i];
2309 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2310 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2313 av_parser_close(st->parser);
2318 /* estimate the end time (duration) */
2319 /* XXX: may need to support wrapping */
2320 filesize = ic->pb ? avio_size(ic->pb) : 0;
2321 end_time = AV_NOPTS_VALUE;
2323 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2327 avio_seek(ic->pb, offset, SEEK_SET);
2330 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2334 ret = ff_read_packet(ic, pkt);
2335 } while(ret == AVERROR(EAGAIN));
2338 read_size += pkt->size;
2339 st = ic->streams[pkt->stream_index];
2340 if (pkt->pts != AV_NOPTS_VALUE &&
2341 (st->start_time != AV_NOPTS_VALUE ||
2342 st->first_dts != AV_NOPTS_VALUE)) {
2343 duration = end_time = pkt->pts;
2344 if (st->start_time != AV_NOPTS_VALUE)
2345 duration -= st->start_time;
2347 duration -= st->first_dts;
2349 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2350 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2351 st->duration = duration;
2352 st->info->last_duration = duration;
2355 av_free_packet(pkt);
2357 }while( end_time==AV_NOPTS_VALUE
2358 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2359 && ++retry <= DURATION_MAX_RETRY);
2361 fill_all_stream_timings(ic);
2363 avio_seek(ic->pb, old_offset, SEEK_SET);
2364 for (i=0; i<ic->nb_streams; i++) {
2366 st->cur_dts= st->first_dts;
2367 st->last_IP_pts = AV_NOPTS_VALUE;
2371 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2375 /* get the file size, if possible */
2376 if (ic->iformat->flags & AVFMT_NOFILE) {
2379 file_size = avio_size(ic->pb);
2380 file_size = FFMAX(0, file_size);
2383 if ((!strcmp(ic->iformat->name, "mpeg") ||
2384 !strcmp(ic->iformat->name, "mpegts")) &&
2385 file_size && ic->pb->seekable) {
2386 /* get accurate estimate from the PTSes */
2387 estimate_timings_from_pts(ic, old_offset);
2388 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2389 } else if (has_duration(ic)) {
2390 /* at least one component has timings - we use them for all
2392 fill_all_stream_timings(ic);
2393 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2395 /* less precise: use bitrate info */
2396 estimate_timings_from_bit_rate(ic);
2397 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2399 update_stream_timings(ic);
2403 AVStream av_unused *st;
2404 for(i = 0;i < ic->nb_streams; i++) {
2405 st = ic->streams[i];
2406 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2407 (double) st->start_time / AV_TIME_BASE,
2408 (double) st->duration / AV_TIME_BASE);
2410 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2411 (double) ic->start_time / AV_TIME_BASE,
2412 (double) ic->duration / AV_TIME_BASE,
2413 ic->bit_rate / 1000);
2417 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2419 AVCodecContext *avctx = st->codec;
2421 #define FAIL(errmsg) do { \
2423 *errmsg_ptr = errmsg; \
2427 switch (avctx->codec_type) {
2428 case AVMEDIA_TYPE_AUDIO:
2429 if (!avctx->frame_size && determinable_frame_size(avctx))
2430 FAIL("unspecified frame size");
2431 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2432 FAIL("unspecified sample format");
2433 if (!avctx->sample_rate)
2434 FAIL("unspecified sample rate");
2435 if (!avctx->channels)
2436 FAIL("unspecified number of channels");
2437 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2438 FAIL("no decodable DTS frames");
2440 case AVMEDIA_TYPE_VIDEO:
2442 FAIL("unspecified size");
2443 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2444 FAIL("unspecified pixel format");
2445 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2446 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2447 FAIL("no frame in rv30/40 and no sar");
2449 case AVMEDIA_TYPE_SUBTITLE:
2450 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2451 FAIL("unspecified size");
2453 case AVMEDIA_TYPE_DATA:
2454 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2457 if (avctx->codec_id == AV_CODEC_ID_NONE)
2458 FAIL("unknown codec");
2462 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2463 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options)
2465 const AVCodec *codec;
2466 int got_picture = 1, ret = 0;
2467 AVFrame *frame = av_frame_alloc();
2468 AVSubtitle subtitle;
2469 AVPacket pkt = *avpkt;
2472 return AVERROR(ENOMEM);
2474 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2475 AVDictionary *thread_opt = NULL;
2477 codec = find_decoder(s, st, st->codec->codec_id);
2480 st->info->found_decoder = -1;
2485 /* force thread count to 1 since the h264 decoder will not extract SPS
2486 * and PPS to extradata during multi-threaded decoding */
2487 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2488 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2490 av_dict_free(&thread_opt);
2492 st->info->found_decoder = -1;
2495 st->info->found_decoder = 1;
2496 } else if (!st->info->found_decoder)
2497 st->info->found_decoder = 1;
2499 if (st->info->found_decoder < 0) {
2504 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2506 (!has_codec_parameters(st, NULL) ||
2507 !has_decode_delay_been_guessed(st) ||
2508 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2510 switch(st->codec->codec_type) {
2511 case AVMEDIA_TYPE_VIDEO:
2512 ret = avcodec_decode_video2(st->codec, frame,
2513 &got_picture, &pkt);
2515 case AVMEDIA_TYPE_AUDIO:
2516 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2518 case AVMEDIA_TYPE_SUBTITLE:
2519 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2520 &got_picture, &pkt);
2528 st->nb_decoded_frames++;
2535 if(!pkt.data && !got_picture)
2539 av_frame_free(&frame);
2543 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2545 while (tags->id != AV_CODEC_ID_NONE) {
2553 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2556 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2557 if(tag == tags[i].tag)
2560 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2561 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2564 return AV_CODEC_ID_NONE;
2567 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2571 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2572 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2573 default: return AV_CODEC_ID_NONE;
2578 if (sflags & (1 << (bps - 1))) {
2580 case 1: return AV_CODEC_ID_PCM_S8;
2581 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2582 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2583 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2584 default: return AV_CODEC_ID_NONE;
2588 case 1: return AV_CODEC_ID_PCM_U8;
2589 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2590 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2591 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2592 default: return AV_CODEC_ID_NONE;
2598 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2601 if (!av_codec_get_tag2(tags, id, &tag))
2606 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2610 for(i=0; tags && tags[i]; i++){
2611 const AVCodecTag *codec_tags = tags[i];
2612 while (codec_tags->id != AV_CODEC_ID_NONE) {
2613 if (codec_tags->id == id) {
2614 *tag = codec_tags->tag;
2623 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2626 for(i=0; tags && tags[i]; i++){
2627 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2628 if(id!=AV_CODEC_ID_NONE) return id;
2630 return AV_CODEC_ID_NONE;
2633 static void compute_chapters_end(AVFormatContext *s)
2636 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2638 for (i = 0; i < s->nb_chapters; i++)
2639 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2640 AVChapter *ch = s->chapters[i];
2641 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2644 for (j = 0; j < s->nb_chapters; j++) {
2645 AVChapter *ch1 = s->chapters[j];
2646 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2647 if (j != i && next_start > ch->start && next_start < end)
2650 ch->end = (end == INT64_MAX) ? ch->start : end;
2654 static int get_std_framerate(int i){
2655 if(i<60*12) return (i+1)*1001;
2656 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2660 * Is the time base unreliable.
2661 * This is a heuristic to balance between quick acceptance of the values in
2662 * the headers vs. some extra checks.
2663 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2664 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2665 * And there are "variable" fps files this needs to detect as well.
2667 static int tb_unreliable(AVCodecContext *c){
2668 if( c->time_base.den >= 101L*c->time_base.num
2669 || c->time_base.den < 5L*c->time_base.num
2670 /* || c->codec_tag == AV_RL32("DIVX")
2671 || c->codec_tag == AV_RL32("XVID")*/
2672 || c->codec_tag == AV_RL32("mp4v")
2673 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2674 || c->codec_id == AV_CODEC_ID_H264
2680 #if FF_API_FORMAT_PARAMETERS
2681 int av_find_stream_info(AVFormatContext *ic)
2683 return avformat_find_stream_info(ic, NULL);
2687 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2691 if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
2692 avctx->extradata_size = 0;
2693 return AVERROR(EINVAL);
2695 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2696 if (avctx->extradata) {
2697 memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2698 avctx->extradata_size = size;
2701 avctx->extradata_size = 0;
2702 ret = AVERROR(ENOMEM);
2707 int ff_get_extradata(AVCodecContext *avctx, AVIOContext *pb, int size)
2709 int ret = ff_alloc_extradata(avctx, size);
2712 ret = avio_read(pb, avctx->extradata, size);
2714 av_freep(&avctx->extradata);
2715 avctx->extradata_size = 0;
2716 av_log(avctx, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
2717 return ret < 0 ? ret : AVERROR_INVALIDDATA;
2723 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2726 int64_t last = st->info->last_dts;
2728 if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2729 && ts - (uint64_t)last < INT64_MAX){
2730 double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2731 int64_t duration= ts - last;
2733 if (!st->info->duration_error)
2734 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2735 if (!st->info->duration_error)
2736 return AVERROR(ENOMEM);
2738 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2739 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2740 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2741 if (st->info->duration_error[0][1][i] < 1e10) {
2742 int framerate= get_std_framerate(i);
2743 double sdts= dts*framerate/(1001*12);
2745 int64_t ticks= llrint(sdts+j*0.5);
2746 double error= sdts - ticks + j*0.5;
2747 st->info->duration_error[j][0][i] += error;
2748 st->info->duration_error[j][1][i] += error*error;
2752 st->info->duration_count++;
2753 st->info->rfps_duration_sum += duration;
2755 if (st->info->duration_count % 10 == 0) {
2756 int n = st->info->duration_count;
2757 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2758 if (st->info->duration_error[0][1][i] < 1e10) {
2759 double a0 = st->info->duration_error[0][0][i] / n;
2760 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2761 double a1 = st->info->duration_error[1][0][i] / n;
2762 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
2763 if (error0 > 0.04 && error1 > 0.04) {
2764 st->info->duration_error[0][1][i] = 2e10;
2765 st->info->duration_error[1][1][i] = 2e10;
2771 // ignore the first 4 values, they might have some random jitter
2772 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
2773 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2775 if (ts != AV_NOPTS_VALUE)
2776 st->info->last_dts = ts;
2781 void ff_rfps_calculate(AVFormatContext *ic)
2785 for (i = 0; i<ic->nb_streams; i++) {
2786 AVStream *st = ic->streams[i];
2788 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2790 // the check for tb_unreliable() is not completely correct, since this is not about handling
2791 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2792 // ipmovie.c produces.
2793 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)
2794 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);
2795 if (st->info->duration_count>1 && !st->r_frame_rate.num
2796 && tb_unreliable(st->codec)) {
2798 double best_error= 0.01;
2800 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2803 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2805 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2808 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
2812 int n= st->info->duration_count;
2813 double a= st->info->duration_error[k][0][j] / n;
2814 double error= st->info->duration_error[k][1][j]/n - a*a;
2816 if(error < best_error && best_error> 0.000000001){
2818 num = get_std_framerate(j);
2821 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2824 // do not increase frame rate by more than 1 % in order to match a standard rate.
2825 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2826 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2829 av_freep(&st->info->duration_error);
2830 st->info->last_dts = AV_NOPTS_VALUE;
2831 st->info->duration_count = 0;
2832 st->info->rfps_duration_sum = 0;
2836 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2838 int i, count, ret = 0, j;
2841 AVPacket pkt1, *pkt;
2842 int64_t old_offset = avio_tell(ic->pb);
2843 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2844 int flush_codecs = ic->probesize > 0;
2847 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
2848 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
2850 for(i=0;i<ic->nb_streams;i++) {
2851 const AVCodec *codec;
2852 AVDictionary *thread_opt = NULL;
2853 st = ic->streams[i];
2855 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2856 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2857 /* if(!st->time_base.num)
2859 if(!st->codec->time_base.num)
2860 st->codec->time_base= st->time_base;
2862 //only for the split stuff
2863 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2864 st->parser = av_parser_init(st->codec->codec_id);
2866 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2867 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2868 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2869 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2871 } else if (st->need_parsing) {
2872 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2873 "%s, packets or times may be invalid.\n",
2874 avcodec_get_name(st->codec->codec_id));
2877 codec = find_decoder(ic, st, st->codec->codec_id);
2879 /* force thread count to 1 since the h264 decoder will not extract SPS
2880 * and PPS to extradata during multi-threaded decoding */
2881 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2883 /* Ensure that subtitle_header is properly set. */
2884 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2885 && codec && !st->codec->codec) {
2886 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2887 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2890 //try to just open decoders, in case this is enough to get parameters
2891 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2892 if (codec && !st->codec->codec)
2893 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2894 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2897 av_dict_free(&thread_opt);
2900 for (i=0; i<ic->nb_streams; i++) {
2901 #if FF_API_R_FRAME_RATE
2902 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2904 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2905 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2911 if (ff_check_interrupt(&ic->interrupt_callback)){
2913 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2917 /* check if one codec still needs to be handled */
2918 for(i=0;i<ic->nb_streams;i++) {
2919 int fps_analyze_framecount = 20;
2921 st = ic->streams[i];
2922 if (!has_codec_parameters(st, NULL))
2924 /* if the timebase is coarse (like the usual millisecond precision
2925 of mkv), we need to analyze more frames to reliably arrive at
2927 if (av_q2d(st->time_base) > 0.0005)
2928 fps_analyze_framecount *= 2;
2929 if (ic->fps_probe_size >= 0)
2930 fps_analyze_framecount = ic->fps_probe_size;
2931 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2932 fps_analyze_framecount = 0;
2933 /* variable fps and no guess at the real fps */
2934 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2935 && st->info->duration_count < fps_analyze_framecount
2936 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2938 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2940 if (st->first_dts == AV_NOPTS_VALUE &&
2941 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2942 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2945 if (i == ic->nb_streams) {
2946 /* NOTE: if the format has no header, then we need to read
2947 some packets to get most of the streams, so we cannot
2949 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2950 /* if we found the info for all the codecs, we can stop */
2952 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2957 /* we did not get all the codec info, but we read too much data */
2958 if (read_size >= ic->probesize) {
2960 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2961 for (i = 0; i < ic->nb_streams; i++)
2962 if (!ic->streams[i]->r_frame_rate.num &&
2963 ic->streams[i]->info->duration_count <= 1 &&
2964 strcmp(ic->iformat->name, "image2"))
2965 av_log(ic, AV_LOG_WARNING,
2966 "Stream #%d: not enough frames to estimate rate; "
2967 "consider increasing probesize\n", i);
2971 /* NOTE: a new stream can be added there if no header in file
2972 (AVFMTCTX_NOHEADER) */
2973 ret = read_frame_internal(ic, &pkt1);
2974 if (ret == AVERROR(EAGAIN))
2982 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2983 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2985 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2986 &ic->packet_buffer_end);
2988 ret = AVERROR(ENOMEM);
2989 goto find_stream_info_err;
2991 if ((ret = av_dup_packet(pkt)) < 0)
2992 goto find_stream_info_err;
2995 st = ic->streams[pkt->stream_index];
2996 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2997 read_size += pkt->size;
2999 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3000 /* check for non-increasing dts */
3001 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3002 st->info->fps_last_dts >= pkt->dts) {
3003 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
3004 "packet %d with DTS %"PRId64", packet %d with DTS "
3005 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3006 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3007 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3009 /* check for a discontinuity in dts - if the difference in dts
3010 * is more than 1000 times the average packet duration in the sequence,
3011 * we treat it as a discontinuity */
3012 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3013 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3014 (pkt->dts - st->info->fps_last_dts) / 1000 >
3015 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3016 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
3017 "packet %d with DTS %"PRId64", packet %d with DTS "
3018 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
3019 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
3020 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
3023 /* update stored dts values */
3024 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3025 st->info->fps_first_dts = pkt->dts;
3026 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3028 st->info->fps_last_dts = pkt->dts;
3029 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3031 if (st->codec_info_nb_frames>1) {
3033 if (st->time_base.den > 0)
3034 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3035 if (st->avg_frame_rate.num > 0)
3036 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3039 && st->codec_info_nb_frames>30
3040 && st->info->fps_first_dts != AV_NOPTS_VALUE
3041 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3042 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3044 if (t >= ic->max_analyze_duration) {
3045 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
3048 if (pkt->duration) {
3049 st->info->codec_info_duration += pkt->duration;
3050 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
3053 #if FF_API_R_FRAME_RATE
3054 ff_rfps_add_frame(ic, st, pkt->dts);
3056 if(st->parser && st->parser->parser->split && !st->codec->extradata){
3057 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
3058 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3059 if (ff_alloc_extradata(st->codec, i))
3060 return AVERROR(ENOMEM);
3061 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
3065 /* if still no information, we try to open the codec and to
3066 decompress the frame. We try to avoid that in most cases as
3067 it takes longer and uses more memory. For MPEG-4, we need to
3068 decompress for QuickTime.
3070 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3071 least one frame of codec data, this makes sure the codec initializes
3072 the channel configuration and does not only trust the values from the container.
3074 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
3076 st->codec_info_nb_frames++;
3081 AVPacket empty_pkt = { 0 };
3083 av_init_packet(&empty_pkt);
3085 for(i=0;i<ic->nb_streams;i++) {
3087 st = ic->streams[i];
3089 /* flush the decoders */
3090 if (st->info->found_decoder == 1) {
3092 err = try_decode_frame(ic, st, &empty_pkt,
3093 (options && i < orig_nb_streams) ?
3094 &options[i] : NULL);
3095 } while (err > 0 && !has_codec_parameters(st, NULL));
3098 av_log(ic, AV_LOG_INFO,
3099 "decoding for stream %d failed\n", st->index);
3105 // close codecs which were opened in try_decode_frame()
3106 for(i=0;i<ic->nb_streams;i++) {
3107 st = ic->streams[i];
3108 avcodec_close(st->codec);
3111 ff_rfps_calculate(ic);
3113 for(i=0;i<ic->nb_streams;i++) {
3114 st = ic->streams[i];
3115 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3116 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3117 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3118 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3119 st->codec->codec_tag= tag;
3122 /* estimate average framerate if not set by demuxer */
3123 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3125 double best_error = 0.01;
3127 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3128 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3129 st->info->codec_info_duration < 0)
3131 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3132 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3133 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3135 /* round guessed framerate to a "standard" framerate if it's
3136 * within 1% of the original estimate*/
3137 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3138 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3139 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3141 if (error < best_error) {
3143 best_fps = std_fps.num;
3147 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3148 best_fps, 12*1001, INT_MAX);
3152 if (!st->r_frame_rate.num){
3153 if( st->codec->time_base.den * (int64_t)st->time_base.num
3154 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3155 st->r_frame_rate.num = st->codec->time_base.den;
3156 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3158 st->r_frame_rate.num = st->time_base.den;
3159 st->r_frame_rate.den = st->time_base.num;
3162 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3163 if(!st->codec->bits_per_coded_sample)
3164 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3165 // set stream disposition based on audio service type
3166 switch (st->codec->audio_service_type) {
3167 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3168 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3169 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3170 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3171 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3172 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3173 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3174 st->disposition = AV_DISPOSITION_COMMENT; break;
3175 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3176 st->disposition = AV_DISPOSITION_KARAOKE; break;
3182 estimate_timings(ic, old_offset);
3184 if (ret >= 0 && ic->nb_streams)
3185 ret = -1; /* we could not have all the codec parameters before EOF */
3186 for(i=0;i<ic->nb_streams;i++) {
3188 st = ic->streams[i];
3189 if (!has_codec_parameters(st, &errmsg)) {
3191 avcodec_string(buf, sizeof(buf), st->codec, 0);
3192 av_log(ic, AV_LOG_WARNING,
3193 "Could not find codec parameters for stream %d (%s): %s\n"
3194 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3201 compute_chapters_end(ic);
3203 find_stream_info_err:
3204 for (i=0; i < ic->nb_streams; i++) {
3205 st = ic->streams[i];
3206 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3207 ic->streams[i]->codec->thread_count = 0;
3209 av_freep(&st->info->duration_error);
3210 av_freep(&ic->streams[i]->info);
3213 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3214 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3218 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3222 for (i = 0; i < ic->nb_programs; i++) {
3223 if (ic->programs[i] == last) {
3227 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3228 if (ic->programs[i]->stream_index[j] == s)
3229 return ic->programs[i];
3235 int av_find_best_stream(AVFormatContext *ic,
3236 enum AVMediaType type,
3237 int wanted_stream_nb,
3239 AVCodec **decoder_ret,
3242 int i, nb_streams = ic->nb_streams;
3243 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3244 unsigned *program = NULL;
3245 AVCodec *decoder = NULL, *best_decoder = NULL;
3247 if (related_stream >= 0 && wanted_stream_nb < 0) {
3248 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3250 program = p->stream_index;
3251 nb_streams = p->nb_stream_indexes;
3254 for (i = 0; i < nb_streams; i++) {
3255 int real_stream_index = program ? program[i] : i;
3256 AVStream *st = ic->streams[real_stream_index];
3257 AVCodecContext *avctx = st->codec;
3258 if (avctx->codec_type != type)
3260 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3262 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3265 decoder = find_decoder(ic, st, st->codec->codec_id);
3268 ret = AVERROR_DECODER_NOT_FOUND;
3272 count = st->codec_info_nb_frames;
3273 bitrate = avctx->bit_rate;
3274 multiframe = FFMIN(5, count);
3275 if ((best_multiframe > multiframe) ||
3276 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3277 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3280 best_bitrate = bitrate;
3281 best_multiframe = multiframe;
3282 ret = real_stream_index;
3283 best_decoder = decoder;
3284 if (program && i == nb_streams - 1 && ret < 0) {
3286 nb_streams = ic->nb_streams;
3287 i = 0; /* no related stream found, try again with everything */
3291 *decoder_ret = best_decoder;
3295 /*******************************************************/
3297 int av_read_play(AVFormatContext *s)
3299 if (s->iformat->read_play)
3300 return s->iformat->read_play(s);
3302 return avio_pause(s->pb, 0);
3303 return AVERROR(ENOSYS);
3306 int av_read_pause(AVFormatContext *s)
3308 if (s->iformat->read_pause)
3309 return s->iformat->read_pause(s);
3311 return avio_pause(s->pb, 1);
3312 return AVERROR(ENOSYS);
3315 void ff_free_stream(AVFormatContext *s, AVStream *st){
3316 av_assert0(s->nb_streams>0);
3317 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3320 av_parser_close(st->parser);
3322 if (st->attached_pic.data)
3323 av_free_packet(&st->attached_pic);
3324 av_dict_free(&st->metadata);
3325 av_freep(&st->probe_data.buf);
3326 av_freep(&st->index_entries);
3327 av_freep(&st->codec->extradata);
3328 av_freep(&st->codec->subtitle_header);
3329 av_freep(&st->codec);
3330 av_freep(&st->priv_data);
3332 av_freep(&st->info->duration_error);
3333 av_freep(&st->info);
3334 av_freep(&s->streams[ --s->nb_streams ]);
3337 void avformat_free_context(AVFormatContext *s)
3345 if (s->iformat && s->iformat->priv_class && s->priv_data)
3346 av_opt_free(s->priv_data);
3348 for(i=s->nb_streams-1; i>=0; i--) {
3349 ff_free_stream(s, s->streams[i]);
3351 for(i=s->nb_programs-1; i>=0; i--) {
3352 av_dict_free(&s->programs[i]->metadata);
3353 av_freep(&s->programs[i]->stream_index);
3354 av_freep(&s->programs[i]);
3356 av_freep(&s->programs);
3357 av_freep(&s->priv_data);
3358 while(s->nb_chapters--) {
3359 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3360 av_freep(&s->chapters[s->nb_chapters]);
3362 av_freep(&s->chapters);
3363 av_dict_free(&s->metadata);
3364 av_freep(&s->streams);
3368 #if FF_API_CLOSE_INPUT_FILE
3369 void av_close_input_file(AVFormatContext *s)
3371 avformat_close_input(&s);
3375 void avformat_close_input(AVFormatContext **ps)
3386 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3387 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3390 flush_packet_queue(s);
3393 if (s->iformat->read_close)
3394 s->iformat->read_close(s);
3397 avformat_free_context(s);
3404 #if FF_API_NEW_STREAM
3405 AVStream *av_new_stream(AVFormatContext *s, int id)
3407 AVStream *st = avformat_new_stream(s, NULL);
3414 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3420 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3422 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3425 s->streams = streams;
3427 st = av_mallocz(sizeof(AVStream));
3430 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3434 st->info->last_dts = AV_NOPTS_VALUE;
3436 st->codec = avcodec_alloc_context3(c);
3438 /* no default bitrate if decoding */
3439 st->codec->bit_rate = 0;
3441 st->index = s->nb_streams;
3442 st->start_time = AV_NOPTS_VALUE;
3443 st->duration = AV_NOPTS_VALUE;
3444 /* we set the current DTS to 0 so that formats without any timestamps
3445 but durations get some timestamps, formats with some unknown
3446 timestamps have their first few packets buffered and the
3447 timestamps corrected before they are returned to the user */
3448 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3449 st->first_dts = AV_NOPTS_VALUE;
3450 st->probe_packets = MAX_PROBE_PACKETS;
3451 st->pts_wrap_reference = AV_NOPTS_VALUE;
3452 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3454 /* default pts setting is MPEG-like */
3455 avpriv_set_pts_info(st, 33, 1, 90000);
3456 st->last_IP_pts = AV_NOPTS_VALUE;
3457 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3458 st->pts_buffer[i]= AV_NOPTS_VALUE;
3460 st->sample_aspect_ratio = (AVRational){0,1};
3462 #if FF_API_R_FRAME_RATE
3463 st->info->last_dts = AV_NOPTS_VALUE;
3465 st->info->fps_first_dts = AV_NOPTS_VALUE;
3466 st->info->fps_last_dts = AV_NOPTS_VALUE;
3468 s->streams[s->nb_streams++] = st;
3472 AVProgram *av_new_program(AVFormatContext *ac, int id)
3474 AVProgram *program=NULL;
3477 av_dlog(ac, "new_program: id=0x%04x\n", id);
3479 for(i=0; i<ac->nb_programs; i++)
3480 if(ac->programs[i]->id == id)
3481 program = ac->programs[i];
3484 program = av_mallocz(sizeof(AVProgram));
3487 dynarray_add(&ac->programs, &ac->nb_programs, program);
3488 program->discard = AVDISCARD_NONE;
3491 program->pts_wrap_reference = AV_NOPTS_VALUE;
3492 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3494 program->start_time =
3495 program->end_time = AV_NOPTS_VALUE;
3500 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3502 AVChapter *chapter = NULL;
3505 for(i=0; i<s->nb_chapters; i++)
3506 if(s->chapters[i]->id == id)
3507 chapter = s->chapters[i];
3510 chapter= av_mallocz(sizeof(AVChapter));
3513 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3515 av_dict_set(&chapter->metadata, "title", title, 0);
3517 chapter->time_base= time_base;
3518 chapter->start = start;
3524 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3527 AVProgram *program=NULL;
3530 if (idx >= ac->nb_streams) {
3531 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3535 for(i=0; i<ac->nb_programs; i++){
3536 if(ac->programs[i]->id != progid)
3538 program = ac->programs[i];
3539 for(j=0; j<program->nb_stream_indexes; j++)
3540 if(program->stream_index[j] == idx)
3543 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3546 program->stream_index = tmp;
3547 program->stream_index[program->nb_stream_indexes++] = idx;
3552 static void print_fps(double d, const char *postfix){
3553 uint64_t v= lrintf(d*100);
3554 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3555 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3556 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3559 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3561 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3562 AVDictionaryEntry *tag=NULL;
3564 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3565 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3566 if(strcmp("language", tag->key)){
3567 const char *p = tag->value;
3568 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3571 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3572 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3573 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3575 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3576 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3579 av_log(ctx, AV_LOG_INFO, "\n");
3585 /* "user interface" functions */
3586 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3589 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3590 AVStream *st = ic->streams[i];
3591 int g = av_gcd(st->time_base.num, st->time_base.den);
3592 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3593 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3594 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3595 /* the pid is an important information, so we display it */
3596 /* XXX: add a generic system */
3597 if (flags & AVFMT_SHOW_IDS)
3598 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3600 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3601 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3602 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3603 if (st->sample_aspect_ratio.num && // default
3604 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3605 AVRational display_aspect_ratio;
3606 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3607 st->codec->width*st->sample_aspect_ratio.num,
3608 st->codec->height*st->sample_aspect_ratio.den,
3610 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3611 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3612 display_aspect_ratio.num, display_aspect_ratio.den);
3614 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3615 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3616 print_fps(av_q2d(st->avg_frame_rate), "fps");
3617 #if FF_API_R_FRAME_RATE
3618 if(st->r_frame_rate.den && st->r_frame_rate.num)
3619 print_fps(av_q2d(st->r_frame_rate), "tbr");
3621 if(st->time_base.den && st->time_base.num)
3622 print_fps(1/av_q2d(st->time_base), "tbn");
3623 if(st->codec->time_base.den && st->codec->time_base.num)
3624 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3626 if (st->disposition & AV_DISPOSITION_DEFAULT)
3627 av_log(NULL, AV_LOG_INFO, " (default)");
3628 if (st->disposition & AV_DISPOSITION_DUB)
3629 av_log(NULL, AV_LOG_INFO, " (dub)");
3630 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3631 av_log(NULL, AV_LOG_INFO, " (original)");
3632 if (st->disposition & AV_DISPOSITION_COMMENT)
3633 av_log(NULL, AV_LOG_INFO, " (comment)");
3634 if (st->disposition & AV_DISPOSITION_LYRICS)
3635 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3636 if (st->disposition & AV_DISPOSITION_KARAOKE)
3637 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3638 if (st->disposition & AV_DISPOSITION_FORCED)
3639 av_log(NULL, AV_LOG_INFO, " (forced)");
3640 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3641 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3642 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3643 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3644 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3645 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3646 av_log(NULL, AV_LOG_INFO, "\n");
3647 dump_metadata(NULL, st->metadata, " ");
3650 void av_dump_format(AVFormatContext *ic,
3656 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3657 if (ic->nb_streams && !printed)
3660 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3661 is_output ? "Output" : "Input",
3663 is_output ? ic->oformat->name : ic->iformat->name,
3664 is_output ? "to" : "from", url);
3665 dump_metadata(NULL, ic->metadata, " ");
3667 av_log(NULL, AV_LOG_INFO, " Duration: ");
3668 if (ic->duration != AV_NOPTS_VALUE) {
3669 int hours, mins, secs, us;
3670 int64_t duration = ic->duration + 5000;
3671 secs = duration / AV_TIME_BASE;
3672 us = duration % AV_TIME_BASE;
3677 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3678 (100 * us) / AV_TIME_BASE);
3680 av_log(NULL, AV_LOG_INFO, "N/A");
3682 if (ic->start_time != AV_NOPTS_VALUE) {
3684 av_log(NULL, AV_LOG_INFO, ", start: ");
3685 secs = ic->start_time / AV_TIME_BASE;
3686 us = abs(ic->start_time % AV_TIME_BASE);
3687 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3688 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3690 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3692 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3694 av_log(NULL, AV_LOG_INFO, "N/A");
3696 av_log(NULL, AV_LOG_INFO, "\n");
3698 for (i = 0; i < ic->nb_chapters; i++) {
3699 AVChapter *ch = ic->chapters[i];
3700 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3701 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3702 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3704 dump_metadata(NULL, ch->metadata, " ");
3706 if(ic->nb_programs) {
3707 int j, k, total = 0;
3708 for(j=0; j<ic->nb_programs; j++) {
3709 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3711 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3712 name ? name->value : "");
3713 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3714 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3715 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3716 printed[ic->programs[j]->stream_index[k]] = 1;
3718 total += ic->programs[j]->nb_stream_indexes;
3720 if (total < ic->nb_streams)
3721 av_log(NULL, AV_LOG_INFO, " No Program\n");
3723 for(i=0;i<ic->nb_streams;i++)
3725 dump_stream_format(ic, i, index, is_output);
3730 uint64_t ff_ntp_time(void)
3732 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3735 int av_get_frame_filename(char *buf, int buf_size,
3736 const char *path, int number)
3739 char *q, buf1[20], c;
3740 int nd, len, percentd_found;
3752 while (av_isdigit(*p)) {
3753 nd = nd * 10 + *p++ - '0';
3756 } while (av_isdigit(c));
3765 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3767 if ((q - buf + len) > buf_size - 1)
3769 memcpy(q, buf1, len);
3777 if ((q - buf) < buf_size - 1)
3781 if (!percentd_found)
3790 static void hex_dump_internal(void *avcl, FILE *f, int level,
3791 const uint8_t *buf, int size)
3794 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3796 for(i=0;i<size;i+=16) {
3803 PRINT(" %02x", buf[i+j]);
3808 for(j=0;j<len;j++) {
3810 if (c < ' ' || c > '~')
3819 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3821 hex_dump_internal(NULL, f, 0, buf, size);
3824 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3826 hex_dump_internal(avcl, NULL, level, buf, size);
3829 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3831 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3832 PRINT("stream #%d:\n", pkt->stream_index);
3833 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3834 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3835 /* DTS is _always_ valid after av_read_frame() */
3837 if (pkt->dts == AV_NOPTS_VALUE)
3840 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3841 /* PTS may not be known if B-frames are present. */
3843 if (pkt->pts == AV_NOPTS_VALUE)
3846 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3848 PRINT(" size=%d\n", pkt->size);
3851 av_hex_dump(f, pkt->data, pkt->size);
3854 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3856 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3859 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3862 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3865 void av_url_split(char *proto, int proto_size,
3866 char *authorization, int authorization_size,
3867 char *hostname, int hostname_size,
3869 char *path, int path_size,
3872 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3874 if (port_ptr) *port_ptr = -1;
3875 if (proto_size > 0) proto[0] = 0;
3876 if (authorization_size > 0) authorization[0] = 0;
3877 if (hostname_size > 0) hostname[0] = 0;
3878 if (path_size > 0) path[0] = 0;
3880 /* parse protocol */
3881 if ((p = strchr(url, ':'))) {
3882 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3887 /* no protocol means plain filename */
3888 av_strlcpy(path, url, path_size);
3892 /* separate path from hostname */
3893 ls = strchr(p, '/');
3894 ls2 = strchr(p, '?');
3898 ls = FFMIN(ls, ls2);
3900 av_strlcpy(path, ls, path_size);
3902 ls = &p[strlen(p)]; // XXX
3904 /* the rest is hostname, use that to parse auth/port */
3906 /* authorization (user[:pass]@hostname) */
3908 while ((at = strchr(p, '@')) && at < ls) {
3909 av_strlcpy(authorization, at2,
3910 FFMIN(authorization_size, at + 1 - at2));
3911 p = at + 1; /* skip '@' */
3914 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3916 av_strlcpy(hostname, p + 1,
3917 FFMIN(hostname_size, brk - p));
3918 if (brk[1] == ':' && port_ptr)
3919 *port_ptr = atoi(brk + 2);
3920 } else if ((col = strchr(p, ':')) && col < ls) {
3921 av_strlcpy(hostname, p,
3922 FFMIN(col + 1 - p, hostname_size));
3923 if (port_ptr) *port_ptr = atoi(col + 1);
3925 av_strlcpy(hostname, p,
3926 FFMIN(ls + 1 - p, hostname_size));
3930 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3933 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3936 'C', 'D', 'E', 'F' };
3937 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3940 'c', 'd', 'e', 'f' };
3941 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3943 for(i = 0; i < s; i++) {
3944 buff[i * 2] = hex_table[src[i] >> 4];
3945 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3951 int ff_hex_to_data(uint8_t *data, const char *p)
3958 p += strspn(p, SPACE_CHARS);
3961 c = av_toupper((unsigned char) *p++);
3962 if (c >= '0' && c <= '9')
3964 else if (c >= 'A' && c <= 'F')
3979 #if FF_API_SET_PTS_INFO
3980 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3981 unsigned int pts_num, unsigned int pts_den)
3983 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3987 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3988 unsigned int pts_num, unsigned int pts_den)
3991 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3992 if(new_tb.num != pts_num)
3993 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3995 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3997 if(new_tb.num <= 0 || new_tb.den <= 0) {
3998 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);
4001 s->time_base = new_tb;
4002 av_codec_set_pkt_timebase(s->codec, new_tb);
4003 s->pts_wrap_bits = pts_wrap_bits;
4006 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4009 const char *ptr = str;
4011 /* Parse key=value pairs. */
4014 char *dest = NULL, *dest_end;
4015 int key_len, dest_len = 0;
4017 /* Skip whitespace and potential commas. */
4018 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4025 if (!(ptr = strchr(key, '=')))
4028 key_len = ptr - key;
4030 callback_get_buf(context, key, key_len, &dest, &dest_len);
4031 dest_end = dest + dest_len - 1;
4035 while (*ptr && *ptr != '\"') {
4039 if (dest && dest < dest_end)
4043 if (dest && dest < dest_end)
4051 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4052 if (dest && dest < dest_end)
4060 int ff_find_stream_index(AVFormatContext *s, int id)
4063 for (i = 0; i < s->nb_streams; i++) {
4064 if (s->streams[i]->id == id)
4070 int64_t ff_iso8601_to_unix_time(const char *datestr)
4072 struct tm time1 = {0}, time2 = {0};
4074 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4075 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4077 return av_timegm(&time2);
4079 return av_timegm(&time1);
4082 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4085 if (ofmt->query_codec)
4086 return ofmt->query_codec(codec_id, std_compliance);
4087 else if (ofmt->codec_tag)
4088 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4089 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4090 codec_id == ofmt->subtitle_codec)
4093 return AVERROR_PATCHWELCOME;
4096 int avformat_network_init(void)
4100 ff_network_inited_globally = 1;
4101 if ((ret = ff_network_init()) < 0)
4108 int avformat_network_deinit(void)
4117 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4118 uint64_t channel_layout, int32_t sample_rate,
4119 int32_t width, int32_t height)
4125 return AVERROR(EINVAL);
4128 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4130 if (channel_layout) {
4132 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4136 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4138 if (width || height) {
4140 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4142 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4144 return AVERROR(ENOMEM);
4145 bytestream_put_le32(&data, flags);
4147 bytestream_put_le32(&data, channels);
4149 bytestream_put_le64(&data, channel_layout);
4151 bytestream_put_le32(&data, sample_rate);
4152 if (width || height) {
4153 bytestream_put_le32(&data, width);
4154 bytestream_put_le32(&data, height);
4159 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4161 AVRational undef = {0, 1};
4162 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4163 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4164 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4166 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4167 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4168 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4169 stream_sample_aspect_ratio = undef;
4171 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4172 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4173 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4174 frame_sample_aspect_ratio = undef;
4176 if (stream_sample_aspect_ratio.num)
4177 return stream_sample_aspect_ratio;
4179 return frame_sample_aspect_ratio;
4182 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4184 AVRational fr = st->r_frame_rate;
4186 if (st->codec->ticks_per_frame > 1) {
4187 AVRational codec_fr = av_inv_q(st->codec->time_base);
4188 AVRational avg_fr = st->avg_frame_rate;
4189 codec_fr.den *= st->codec->ticks_per_frame;
4190 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4191 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4198 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4201 if (*spec <= '9' && *spec >= '0') /* opt:index */
4202 return strtol(spec, NULL, 0) == st->index;
4203 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4204 *spec == 't') { /* opt:[vasdt] */
4205 enum AVMediaType type;
4208 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4209 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4210 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4211 case 'd': type = AVMEDIA_TYPE_DATA; break;
4212 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4213 default: av_assert0(0);
4215 if (type != st->codec->codec_type)
4217 if (*spec++ == ':') { /* possibly followed by :index */
4218 int i, index = strtol(spec, NULL, 0);
4219 for (i = 0; i < s->nb_streams; i++)
4220 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4221 return i == st->index;
4225 } else if (*spec == 'p' && *(spec + 1) == ':') {
4229 prog_id = strtol(spec, &endptr, 0);
4230 for (i = 0; i < s->nb_programs; i++) {
4231 if (s->programs[i]->id != prog_id)
4234 if (*endptr++ == ':') {
4235 int stream_idx = strtol(endptr, NULL, 0);
4236 return stream_idx >= 0 &&
4237 stream_idx < s->programs[i]->nb_stream_indexes &&
4238 st->index == s->programs[i]->stream_index[stream_idx];
4241 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4242 if (st->index == s->programs[i]->stream_index[j])
4246 } else if (*spec == '#') {
4249 sid = strtol(spec + 1, &endptr, 0);
4251 return st->id == sid;
4252 } else if (!*spec) /* empty specifier, matches everything */
4255 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4256 return AVERROR(EINVAL);
4259 int ff_generate_avci_extradata(AVStream *st)
4261 static const uint8_t avci100_1080p_extradata[] = {
4263 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4264 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4265 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4266 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4267 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4268 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4269 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4270 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4271 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4273 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4276 static const uint8_t avci100_1080i_extradata[] = {
4278 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4279 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4280 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4281 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4282 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4283 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4284 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4285 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4286 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4287 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4288 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4290 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4293 static const uint8_t avci50_1080i_extradata[] = {
4295 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4296 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4297 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4298 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4299 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4300 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4301 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4302 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4303 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4304 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4305 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4307 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4310 static const uint8_t avci100_720p_extradata[] = {
4312 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4313 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4314 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4315 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4316 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4317 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4318 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4319 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4320 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4321 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4323 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4327 const uint8_t *data = NULL;
4330 if (st->codec->width == 1920) {
4331 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4332 data = avci100_1080p_extradata;
4333 size = sizeof(avci100_1080p_extradata);
4335 data = avci100_1080i_extradata;
4336 size = sizeof(avci100_1080i_extradata);
4338 } else if (st->codec->width == 1440) {
4339 data = avci50_1080i_extradata;
4340 size = sizeof(avci50_1080i_extradata);
4341 } else if (st->codec->width == 1280) {
4342 data = avci100_720p_extradata;
4343 size = sizeof(avci100_720p_extradata);
4349 av_freep(&st->codec->extradata);
4350 if (ff_alloc_extradata(st->codec, size))
4351 return AVERROR(ENOMEM);
4352 memcpy(st->codec->extradata, data, size);