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/avassert.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/dict.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 /** head of registered input format linked list */
103 static AVInputFormat *first_iformat = NULL;
104 /** head of registered output format linked list */
105 static AVOutputFormat *first_oformat = NULL;
107 AVInputFormat *av_iformat_next(AVInputFormat *f)
109 if(f) return f->next;
110 else return first_iformat;
113 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
115 if(f) return f->next;
116 else return first_oformat;
119 void av_register_input_format(AVInputFormat *format)
123 while (*p != NULL) p = &(*p)->next;
128 void av_register_output_format(AVOutputFormat *format)
132 while (*p != NULL) p = &(*p)->next;
137 int av_match_ext(const char *filename, const char *extensions)
145 ext = strrchr(filename, '.');
151 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
154 if (!av_strcasecmp(ext1, ext))
164 static int match_format(const char *name, const char *names)
172 namelen = strlen(name);
173 while ((p = strchr(names, ','))) {
174 len = FFMAX(p - names, namelen);
175 if (!av_strncasecmp(name, names, len))
179 return !av_strcasecmp(name, names);
182 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
183 const char *mime_type)
185 AVOutputFormat *fmt = NULL, *fmt_found;
186 int score_max, score;
188 /* specific test for image sequences */
189 #if CONFIG_IMAGE2_MUXER
190 if (!short_name && filename &&
191 av_filename_number_test(filename) &&
192 ff_guess_image2_codec(filename) != AV_CODEC_ID_NONE) {
193 return av_guess_format("image2", NULL, NULL);
196 /* Find the proper file type. */
199 while ((fmt = av_oformat_next(fmt))) {
201 if (fmt->name && short_name && match_format(short_name, fmt->name))
203 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
205 if (filename && fmt->extensions &&
206 av_match_ext(filename, fmt->extensions)) {
209 if (score > score_max) {
217 enum AVCodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
218 const char *filename, const char *mime_type, enum AVMediaType type){
219 if(type == AVMEDIA_TYPE_VIDEO){
220 enum AVCodecID codec_id= AV_CODEC_ID_NONE;
222 #if CONFIG_IMAGE2_MUXER
223 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
224 codec_id= ff_guess_image2_codec(filename);
227 if(codec_id == AV_CODEC_ID_NONE)
228 codec_id= fmt->video_codec;
230 }else if(type == AVMEDIA_TYPE_AUDIO)
231 return fmt->audio_codec;
232 else if (type == AVMEDIA_TYPE_SUBTITLE)
233 return fmt->subtitle_codec;
235 return AV_CODEC_ID_NONE;
238 AVInputFormat *av_find_input_format(const char *short_name)
240 AVInputFormat *fmt = NULL;
241 while ((fmt = av_iformat_next(fmt))) {
242 if (match_format(short_name, fmt->name))
248 int ffio_limit(AVIOContext *s, int size)
251 int64_t remaining= s->maxsize - avio_tell(s);
252 if(remaining < size){
253 int64_t newsize= avio_size(s);
254 if(!s->maxsize || s->maxsize<newsize)
255 s->maxsize= newsize - !newsize;
256 remaining= s->maxsize - avio_tell(s);
257 remaining= FFMAX(remaining, 0);
260 if(s->maxsize>=0 && remaining+1 < size){
261 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
268 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
271 int orig_size = size;
272 size= ffio_limit(s, size);
274 ret= av_new_packet(pkt, size);
279 pkt->pos= avio_tell(s);
281 ret= avio_read(s, pkt->data, size);
285 av_shrink_packet(pkt, ret);
286 if (pkt->size < orig_size)
287 pkt->flags |= AV_PKT_FLAG_CORRUPT;
292 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
297 return av_get_packet(s, pkt, size);
298 old_size = pkt->size;
299 ret = av_grow_packet(pkt, size);
302 ret = avio_read(s, pkt->data + old_size, size);
303 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
308 int av_filename_number_test(const char *filename)
311 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
314 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
316 AVProbeData lpd = *pd;
317 AVInputFormat *fmt1 = NULL, *fmt;
318 int score, nodat = 0, score_max=0;
319 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
322 lpd.buf = zerobuffer;
324 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
325 int id3len = ff_id3v2_tag_len(lpd.buf);
326 if (lpd.buf_size > id3len + 16) {
328 lpd.buf_size -= id3len;
334 while ((fmt1 = av_iformat_next(fmt1))) {
335 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
338 if (fmt1->read_probe) {
339 score = fmt1->read_probe(&lpd);
340 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
341 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
342 } else if (fmt1->extensions) {
343 if (av_match_ext(lpd.filename, fmt1->extensions)) {
347 if (score > score_max) {
350 }else if (score == score_max)
353 *score_ret= score_max;
358 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
361 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
362 if(score_ret > *score_max){
363 *score_max= score_ret;
369 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
371 return av_probe_input_format2(pd, is_opened, &score);
374 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
376 static const struct {
377 const char *name; enum AVCodecID id; enum AVMediaType type;
379 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
380 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
381 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
382 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
383 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
384 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
385 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
386 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
387 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
391 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
393 if (fmt && st->request_probe <= score) {
395 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
396 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
397 for (i = 0; fmt_id_type[i].name; i++) {
398 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
399 st->codec->codec_id = fmt_id_type[i].id;
400 st->codec->codec_type = fmt_id_type[i].type;
408 /************************************************************/
409 /* input media file */
411 int av_demuxer_open(AVFormatContext *ic){
414 if (ic->iformat->read_header) {
415 err = ic->iformat->read_header(ic);
420 if (ic->pb && !ic->data_offset)
421 ic->data_offset = avio_tell(ic->pb);
427 /** size of probe buffer, for guessing file type from file contents */
428 #define PROBE_BUF_MIN 2048
429 #define PROBE_BUF_MAX (1<<20)
431 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
432 const char *filename, void *logctx,
433 unsigned int offset, unsigned int max_probe_size)
435 AVProbeData pd = { filename ? filename : "", NULL, -offset };
436 unsigned char *buf = NULL;
438 int ret = 0, probe_size, buf_offset = 0;
440 if (!max_probe_size) {
441 max_probe_size = PROBE_BUF_MAX;
442 } else if (max_probe_size > PROBE_BUF_MAX) {
443 max_probe_size = PROBE_BUF_MAX;
444 } else if (max_probe_size < PROBE_BUF_MIN) {
445 return AVERROR(EINVAL);
448 if (offset >= max_probe_size) {
449 return AVERROR(EINVAL);
452 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
453 if (!av_strcasecmp(mime_type, "audio/aacp")) {
454 *fmt = av_find_input_format("aac");
456 av_freep(&mime_type);
459 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
460 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
461 int score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
464 if (probe_size < offset) {
468 /* read probe data */
469 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
472 return AVERROR(ENOMEM);
475 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
476 /* fail if error was not end of file, otherwise, lower score */
477 if (ret != AVERROR_EOF) {
482 ret = 0; /* error was end of file, nothing read */
484 pd.buf_size = buf_offset += ret;
485 pd.buf = &buf[offset];
487 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
489 /* guess file format */
490 *fmt = av_probe_input_format2(&pd, 1, &score);
492 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
493 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
495 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
501 return AVERROR_INVALIDDATA;
504 /* rewind. reuse probe buffer to avoid seeking */
505 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
510 /* open input file and probe the format if necessary */
511 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
514 AVProbeData pd = {filename, NULL, 0};
515 int score = AVPROBE_SCORE_RETRY;
518 s->flags |= AVFMT_FLAG_CUSTOM_IO;
520 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
521 else if (s->iformat->flags & AVFMT_NOFILE)
522 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
523 "will be ignored with AVFMT_NOFILE format.\n");
527 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
528 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
531 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
532 &s->interrupt_callback, options)) < 0)
536 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
539 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
540 AVPacketList **plast_pktl){
541 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
546 (*plast_pktl)->next = pktl;
548 *packet_buffer = pktl;
550 /* add the packet in the buffered packet list */
556 void avformat_queue_attached_pictures(AVFormatContext *s)
559 for (i = 0; i < s->nb_streams; i++)
560 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
561 s->streams[i]->discard < AVDISCARD_ALL) {
562 AVPacket copy = s->streams[i]->attached_pic;
563 copy.destruct = NULL;
564 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
568 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
570 AVFormatContext *s = *ps;
572 AVDictionary *tmp = NULL;
573 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
575 if (!s && !(s = avformat_alloc_context()))
576 return AVERROR(ENOMEM);
578 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
579 return AVERROR(EINVAL);
585 av_dict_copy(&tmp, *options, 0);
587 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
590 if ((ret = init_input(s, filename, &tmp)) < 0)
592 avio_skip(s->pb, s->skip_initial_bytes);
594 /* check filename in case an image number is expected */
595 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
596 if (!av_filename_number_test(filename)) {
597 ret = AVERROR(EINVAL);
602 s->duration = s->start_time = AV_NOPTS_VALUE;
603 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
605 /* allocate private data */
606 if (s->iformat->priv_data_size > 0) {
607 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
608 ret = AVERROR(ENOMEM);
611 if (s->iformat->priv_class) {
612 *(const AVClass**)s->priv_data = s->iformat->priv_class;
613 av_opt_set_defaults(s->priv_data);
614 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
619 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
621 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
623 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
624 if ((ret = s->iformat->read_header(s)) < 0)
627 if (id3v2_extra_meta) {
628 if (!strcmp(s->iformat->name, "mp3")) {
629 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
632 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
634 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
636 avformat_queue_attached_pictures(s);
638 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
639 s->data_offset = avio_tell(s->pb);
641 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
644 av_dict_free(options);
651 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
653 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
655 avformat_free_context(s);
660 /*******************************************************/
662 static void force_codec_ids(AVFormatContext *s, AVStream *st)
664 switch(st->codec->codec_type){
665 case AVMEDIA_TYPE_VIDEO:
666 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
668 case AVMEDIA_TYPE_AUDIO:
669 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
671 case AVMEDIA_TYPE_SUBTITLE:
672 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
677 static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
679 if(st->request_probe>0){
680 AVProbeData *pd = &st->probe_data;
682 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
686 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
690 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
691 pd->buf_size += pkt->size;
692 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
695 st->probe_packets = 0;
697 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
702 end= s->raw_packet_buffer_remaining_size <= 0
703 || st->probe_packets<=0;
705 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
706 int score= set_codec_from_probe_data(s, st, pd);
707 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
711 st->request_probe= -1;
712 if(st->codec->codec_id != AV_CODEC_ID_NONE){
713 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
715 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
717 force_codec_ids(s, st);
722 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
728 AVPacketList *pktl = s->raw_packet_buffer;
732 st = s->streams[pkt->stream_index];
733 if(st->request_probe <= 0){
734 s->raw_packet_buffer = pktl->next;
735 s->raw_packet_buffer_remaining_size += pkt->size;
744 ret= s->iformat->read_packet(s, pkt);
746 if (!pktl || ret == AVERROR(EAGAIN))
748 for (i = 0; i < s->nb_streams; i++) {
750 if (st->probe_packets) {
751 probe_codec(s, st, NULL);
753 av_assert0(st->request_probe <= 0);
758 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
759 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
760 av_log(s, AV_LOG_WARNING,
761 "Dropped corrupted packet (stream = %d)\n",
767 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
768 av_packet_merge_side_data(pkt);
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];
776 pkt->dts = wrap_timestamp(st, pkt->dts);
777 pkt->pts = wrap_timestamp(st, pkt->pts);
779 force_codec_ids(s, st);
781 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
782 if (s->use_wallclock_as_timestamps)
783 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
785 if(!pktl && st->request_probe <= 0)
788 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
789 s->raw_packet_buffer_remaining_size -= pkt->size;
791 probe_codec(s, st, pkt);
795 #if FF_API_READ_PACKET
796 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
798 return ff_read_packet(s, pkt);
803 /**********************************************************/
805 static int determinable_frame_size(AVCodecContext *avctx)
807 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
808 avctx->codec_id == AV_CODEC_ID_MP1 ||
809 avctx->codec_id == AV_CODEC_ID_MP2 ||
810 avctx->codec_id == AV_CODEC_ID_MP3/* ||
811 avctx->codec_id == AV_CODEC_ID_CELT*/)
817 * Get the number of samples of an audio frame. Return -1 on error.
819 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
823 /* give frame_size priority if demuxing */
824 if (!mux && enc->frame_size > 1)
825 return enc->frame_size;
827 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
830 /* fallback to using frame_size if muxing */
831 if (enc->frame_size > 1)
832 return enc->frame_size;
834 //For WMA we currently have no other means to calculate duration thus we
835 //do it here by assuming CBR, which is true for all known cases.
836 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
837 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
838 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
846 * Return the frame duration in seconds. Return 0 if not available.
848 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
849 AVCodecParserContext *pc, AVPacket *pkt)
855 switch(st->codec->codec_type) {
856 case AVMEDIA_TYPE_VIDEO:
857 if (st->r_frame_rate.num && !pc) {
858 *pnum = st->r_frame_rate.den;
859 *pden = st->r_frame_rate.num;
860 } else if(st->time_base.num*1000LL > st->time_base.den) {
861 *pnum = st->time_base.num;
862 *pden = st->time_base.den;
863 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
864 *pnum = st->codec->time_base.num;
865 *pden = st->codec->time_base.den;
866 if (pc && pc->repeat_pict) {
867 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
868 *pden /= 1 + pc->repeat_pict;
870 *pnum *= 1 + pc->repeat_pict;
872 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
873 //Thus if we have no parser in such case leave duration undefined.
874 if(st->codec->ticks_per_frame>1 && !pc){
879 case AVMEDIA_TYPE_AUDIO:
880 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
881 if (frame_size <= 0 || st->codec->sample_rate <= 0)
884 *pden = st->codec->sample_rate;
891 static int is_intra_only(AVCodecContext *enc){
892 const AVCodecDescriptor *desc;
894 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
897 desc = av_codec_get_codec_descriptor(enc);
899 desc = avcodec_descriptor_get(enc->codec_id);
900 av_codec_set_codec_descriptor(enc, desc);
903 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
907 static int has_decode_delay_been_guessed(AVStream *st)
909 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
910 if(!st->info) // if we have left find_stream_info then nb_decoded_frames wont increase anymore for stream copy
912 #if CONFIG_H264_DECODER
913 if(st->codec->has_b_frames &&
914 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
917 if(st->codec->has_b_frames<3)
918 return st->nb_decoded_frames >= 7;
919 else if(st->codec->has_b_frames<4)
920 return st->nb_decoded_frames >= 18;
922 return st->nb_decoded_frames >= 20;
925 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
929 if (pktl == s->parse_queue_end)
930 return s->packet_buffer;
934 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
936 if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
937 st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
940 // reference time stamp should be 60 s before first time stamp
941 int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
942 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
943 int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
944 (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
945 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
947 AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
949 if (!first_program) {
950 int default_stream_index = av_find_default_stream_index(s);
951 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
952 for (i=0; i<s->nb_streams; i++) {
953 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
954 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
958 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
959 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
963 AVProgram *program = first_program;
965 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
966 pts_wrap_reference = program->pts_wrap_reference;
967 pts_wrap_behavior = program->pts_wrap_behavior;
970 program = av_find_program_from_stream(s, program, stream_index);
973 // update every program with differing pts_wrap_reference
974 program = first_program;
976 if (program->pts_wrap_reference != pts_wrap_reference) {
977 for (i=0; i<program->nb_stream_indexes; i++) {
978 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
979 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
982 program->pts_wrap_reference = pts_wrap_reference;
983 program->pts_wrap_behavior = pts_wrap_behavior;
985 program = av_find_program_from_stream(s, program, stream_index);
993 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
994 int64_t dts, int64_t pts, AVPacket *pkt)
996 AVStream *st= s->streams[stream_index];
997 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
998 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1002 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
1005 delay = st->codec->has_b_frames;
1006 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
1008 shift = st->first_dts - RELATIVE_TS_BASE;
1010 for (i=0; i<MAX_REORDER_DELAY+1; i++)
1011 pts_buffer[i] = AV_NOPTS_VALUE;
1013 if (is_relative(pts))
1016 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1017 if(pktl->pkt.stream_index != stream_index)
1019 if(is_relative(pktl->pkt.pts))
1020 pktl->pkt.pts += shift;
1022 if(is_relative(pktl->pkt.dts))
1023 pktl->pkt.dts += shift;
1025 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
1026 st->start_time= pktl->pkt.pts;
1028 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1029 pts_buffer[0]= pktl->pkt.pts;
1030 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
1031 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
1032 if(pktl->pkt.dts == AV_NOPTS_VALUE)
1033 pktl->pkt.dts= pts_buffer[0];
1037 if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
1038 // correct first time stamps to negative values
1039 st->first_dts = wrap_timestamp(st, st->first_dts);
1040 st->cur_dts = wrap_timestamp(st, st->cur_dts);
1041 pkt->dts = wrap_timestamp(st, pkt->dts);
1042 pkt->pts = wrap_timestamp(st, pkt->pts);
1043 pts = wrap_timestamp(st, pts);
1046 if (st->start_time == AV_NOPTS_VALUE)
1047 st->start_time = pts;
1050 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1051 int stream_index, int duration)
1053 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1054 int64_t cur_dts= RELATIVE_TS_BASE;
1056 if(st->first_dts != AV_NOPTS_VALUE){
1057 cur_dts= st->first_dts;
1058 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1059 if(pktl->pkt.stream_index == stream_index){
1060 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1062 cur_dts -= duration;
1065 if(pktl && pktl->pkt.dts != st->first_dts) {
1066 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s in the queue\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
1070 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1073 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1074 st->first_dts = cur_dts;
1075 }else if(st->cur_dts != RELATIVE_TS_BASE)
1078 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1079 if(pktl->pkt.stream_index != stream_index)
1081 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1082 && !pktl->pkt.duration){
1083 pktl->pkt.dts= cur_dts;
1084 if(!st->codec->has_b_frames)
1085 pktl->pkt.pts= cur_dts;
1086 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1087 pktl->pkt.duration = duration;
1090 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1093 st->cur_dts= cur_dts;
1096 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1097 AVCodecParserContext *pc, AVPacket *pkt)
1099 int num, den, presentation_delayed, delay, i;
1102 if (s->flags & AVFMT_FLAG_NOFILLIN)
1105 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1106 pkt->dts= AV_NOPTS_VALUE;
1108 if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1109 //FIXME Set low_delay = 0 when has_b_frames = 1
1110 st->codec->has_b_frames = 1;
1112 /* do we have a video B-frame ? */
1113 delay= st->codec->has_b_frames;
1114 presentation_delayed = 0;
1116 /* XXX: need has_b_frame, but cannot get it if the codec is
1119 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1120 presentation_delayed = 1;
1122 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && st->pts_wrap_bits<63 && pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > pkt->pts){
1123 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1124 pkt->dts -= 1LL<<st->pts_wrap_bits;
1126 pkt->pts += 1LL<<st->pts_wrap_bits;
1129 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1130 // we take the conservative approach and discard both
1131 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1132 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1133 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1134 if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1135 pkt->dts= AV_NOPTS_VALUE;
1138 if (pkt->duration == 0) {
1139 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1141 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1144 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1145 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1147 /* correct timestamps with byte offset if demuxers only have timestamps
1148 on packet boundaries */
1149 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1150 /* this will estimate bitrate based on this frame's duration and size */
1151 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1152 if(pkt->pts != AV_NOPTS_VALUE)
1154 if(pkt->dts != AV_NOPTS_VALUE)
1158 if (pc && pc->dts_sync_point >= 0) {
1159 // we have synchronization info from the parser
1160 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1162 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1163 if (pkt->dts != AV_NOPTS_VALUE) {
1164 // got DTS from the stream, update reference timestamp
1165 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1166 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1167 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1168 // compute DTS based on reference timestamp
1169 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1170 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1172 if (pc->dts_sync_point > 0)
1173 st->reference_dts = pkt->dts; // new reference
1177 /* This may be redundant, but it should not hurt. */
1178 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1179 presentation_delayed = 1;
1181 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1182 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1183 /* interpolate PTS and DTS if they are not present */
1184 //We skip H264 currently because delay and has_b_frames are not reliably set
1185 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1186 if (presentation_delayed) {
1187 /* DTS = decompression timestamp */
1188 /* PTS = presentation timestamp */
1189 if (pkt->dts == AV_NOPTS_VALUE)
1190 pkt->dts = st->last_IP_pts;
1191 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1192 if (pkt->dts == AV_NOPTS_VALUE)
1193 pkt->dts = st->cur_dts;
1195 /* this is tricky: the dts must be incremented by the duration
1196 of the frame we are displaying, i.e. the last I- or P-frame */
1197 if (st->last_IP_duration == 0)
1198 st->last_IP_duration = pkt->duration;
1199 if(pkt->dts != AV_NOPTS_VALUE)
1200 st->cur_dts = pkt->dts + st->last_IP_duration;
1201 st->last_IP_duration = pkt->duration;
1202 st->last_IP_pts= pkt->pts;
1203 /* cannot compute PTS if not present (we can compute it only
1204 by knowing the future */
1205 } else if (pkt->pts != AV_NOPTS_VALUE ||
1206 pkt->dts != AV_NOPTS_VALUE ||
1208 int duration = pkt->duration;
1210 /* presentation is not delayed : PTS and DTS are the same */
1211 if (pkt->pts == AV_NOPTS_VALUE)
1212 pkt->pts = pkt->dts;
1213 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1215 if (pkt->pts == AV_NOPTS_VALUE)
1216 pkt->pts = st->cur_dts;
1217 pkt->dts = pkt->pts;
1218 if (pkt->pts != AV_NOPTS_VALUE)
1219 st->cur_dts = pkt->pts + duration;
1223 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1224 st->pts_buffer[0]= pkt->pts;
1225 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1226 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1227 if(pkt->dts == AV_NOPTS_VALUE)
1228 pkt->dts= st->pts_buffer[0];
1230 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1231 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1233 if(pkt->dts > st->cur_dts)
1234 st->cur_dts = pkt->dts;
1236 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1237 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1240 if (is_intra_only(st->codec))
1241 pkt->flags |= AV_PKT_FLAG_KEY;
1243 pkt->convergence_duration = pc->convergence_duration;
1246 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1249 AVPacketList *pktl = *pkt_buf;
1250 *pkt_buf = pktl->next;
1251 av_free_packet(&pktl->pkt);
1254 *pkt_buf_end = NULL;
1258 * Parse a packet, add all split parts to parse_queue
1260 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1262 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1264 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1265 AVStream *st = s->streams[stream_index];
1266 uint8_t *data = pkt ? pkt->data : NULL;
1267 int size = pkt ? pkt->size : 0;
1268 int ret = 0, got_output = 0;
1271 av_init_packet(&flush_pkt);
1274 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1275 // preserve 0-size sync packets
1276 compute_pkt_fields(s, st, st->parser, pkt);
1279 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1282 av_init_packet(&out_pkt);
1283 len = av_parser_parse2(st->parser, st->codec,
1284 &out_pkt.data, &out_pkt.size, data, size,
1285 pkt->pts, pkt->dts, pkt->pos);
1287 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1289 /* increment read pointer */
1293 got_output = !!out_pkt.size;
1298 /* set the duration */
1299 out_pkt.duration = 0;
1300 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1301 if (st->codec->sample_rate > 0) {
1302 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1303 (AVRational){ 1, st->codec->sample_rate },
1307 } else if (st->codec->time_base.num != 0 &&
1308 st->codec->time_base.den != 0) {
1309 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1310 st->codec->time_base,
1315 out_pkt.stream_index = st->index;
1316 out_pkt.pts = st->parser->pts;
1317 out_pkt.dts = st->parser->dts;
1318 out_pkt.pos = st->parser->pos;
1320 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1321 out_pkt.pos = st->parser->frame_offset;
1323 if (st->parser->key_frame == 1 ||
1324 (st->parser->key_frame == -1 &&
1325 st->parser->pict_type == AV_PICTURE_TYPE_I))
1326 out_pkt.flags |= AV_PKT_FLAG_KEY;
1328 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1329 out_pkt.flags |= AV_PKT_FLAG_KEY;
1331 compute_pkt_fields(s, st, st->parser, &out_pkt);
1333 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1334 out_pkt.destruct = pkt->destruct;
1335 pkt->destruct = NULL;
1337 if ((ret = av_dup_packet(&out_pkt)) < 0)
1340 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1341 av_free_packet(&out_pkt);
1342 ret = AVERROR(ENOMEM);
1348 /* end of the stream => close and free the parser */
1349 if (pkt == &flush_pkt) {
1350 av_parser_close(st->parser);
1355 av_free_packet(pkt);
1359 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1360 AVPacketList **pkt_buffer_end,
1364 av_assert0(*pkt_buffer);
1367 *pkt_buffer = pktl->next;
1369 *pkt_buffer_end = NULL;
1374 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1376 int ret = 0, i, got_packet = 0;
1378 av_init_packet(pkt);
1380 while (!got_packet && !s->parse_queue) {
1384 /* read next packet */
1385 ret = ff_read_packet(s, &cur_pkt);
1387 if (ret == AVERROR(EAGAIN))
1389 /* flush the parsers */
1390 for(i = 0; i < s->nb_streams; i++) {
1392 if (st->parser && st->need_parsing)
1393 parse_packet(s, NULL, st->index);
1395 /* all remaining packets are now in parse_queue =>
1396 * really terminate parsing */
1400 st = s->streams[cur_pkt.stream_index];
1402 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1403 cur_pkt.dts != AV_NOPTS_VALUE &&
1404 cur_pkt.pts < cur_pkt.dts) {
1405 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1406 cur_pkt.stream_index,
1407 av_ts2str(cur_pkt.pts),
1408 av_ts2str(cur_pkt.dts),
1411 if (s->debug & FF_FDEBUG_TS)
1412 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1413 cur_pkt.stream_index,
1414 av_ts2str(cur_pkt.pts),
1415 av_ts2str(cur_pkt.dts),
1420 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1421 st->parser = av_parser_init(st->codec->codec_id);
1423 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1424 "%s, packets or times may be invalid.\n",
1425 avcodec_get_name(st->codec->codec_id));
1426 /* no parser available: just output the raw packets */
1427 st->need_parsing = AVSTREAM_PARSE_NONE;
1428 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1429 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1430 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1431 st->parser->flags |= PARSER_FLAG_ONCE;
1432 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1433 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1437 if (!st->need_parsing || !st->parser) {
1438 /* no parsing needed: we just output the packet as is */
1440 compute_pkt_fields(s, st, NULL, pkt);
1441 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1442 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1443 ff_reduce_index(s, st->index);
1444 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1447 } else if (st->discard < AVDISCARD_ALL) {
1448 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1452 av_free_packet(&cur_pkt);
1454 if (pkt->flags & AV_PKT_FLAG_KEY)
1455 st->skip_to_keyframe = 0;
1456 if (st->skip_to_keyframe) {
1457 av_free_packet(&cur_pkt);
1462 if (!got_packet && s->parse_queue)
1463 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1465 if(s->debug & FF_FDEBUG_TS)
1466 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1468 av_ts2str(pkt->pts),
1469 av_ts2str(pkt->dts),
1477 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1479 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1485 ret = s->packet_buffer ?
1486 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1487 read_frame_internal(s, pkt);
1494 AVPacketList *pktl = s->packet_buffer;
1497 AVPacket *next_pkt = &pktl->pkt;
1499 if (next_pkt->dts != AV_NOPTS_VALUE) {
1500 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1501 // last dts seen for this stream. if any of packets following
1502 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1503 int64_t last_dts = next_pkt->dts;
1504 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1505 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1506 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1507 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1508 next_pkt->pts = pktl->pkt.dts;
1510 if (last_dts != AV_NOPTS_VALUE) {
1511 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1512 last_dts = pktl->pkt.dts;
1517 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1518 // Fixing the last reference frame had none pts issue (For MXF etc).
1519 // We only do this when
1521 // 2. we are not able to resolve a pts value for current packet.
1522 // 3. the packets for this stream at the end of the files had valid dts.
1523 next_pkt->pts = last_dts + next_pkt->duration;
1525 pktl = s->packet_buffer;
1528 /* read packet from packet buffer, if there is data */
1529 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1530 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1531 ret = read_from_packet_buffer(&s->packet_buffer,
1532 &s->packet_buffer_end, pkt);
1537 ret = read_frame_internal(s, pkt);
1539 if (pktl && ret != AVERROR(EAGAIN)) {
1546 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1547 &s->packet_buffer_end)) < 0)
1548 return AVERROR(ENOMEM);
1553 st = s->streams[pkt->stream_index];
1554 if (st->skip_samples) {
1555 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1556 AV_WL32(p, st->skip_samples);
1557 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1558 st->skip_samples = 0;
1561 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1562 ff_reduce_index(s, st->index);
1563 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1566 if (is_relative(pkt->dts))
1567 pkt->dts -= RELATIVE_TS_BASE;
1568 if (is_relative(pkt->pts))
1569 pkt->pts -= RELATIVE_TS_BASE;
1574 /* XXX: suppress the packet queue */
1575 static void flush_packet_queue(AVFormatContext *s)
1577 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1578 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1579 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1581 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1584 /*******************************************************/
1587 int av_find_default_stream_index(AVFormatContext *s)
1589 int first_audio_index = -1;
1593 if (s->nb_streams <= 0)
1595 for(i = 0; i < s->nb_streams; i++) {
1597 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1598 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1601 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1602 first_audio_index = i;
1604 return first_audio_index >= 0 ? first_audio_index : 0;
1608 * Flush the frame reader.
1610 void ff_read_frame_flush(AVFormatContext *s)
1615 flush_packet_queue(s);
1617 /* for each stream, reset read state */
1618 for(i = 0; i < s->nb_streams; i++) {
1622 av_parser_close(st->parser);
1625 st->last_IP_pts = AV_NOPTS_VALUE;
1626 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1627 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1628 st->reference_dts = AV_NOPTS_VALUE;
1630 st->probe_packets = MAX_PROBE_PACKETS;
1632 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1633 st->pts_buffer[j]= AV_NOPTS_VALUE;
1637 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1641 for(i = 0; i < s->nb_streams; i++) {
1642 AVStream *st = s->streams[i];
1644 st->cur_dts = av_rescale(timestamp,
1645 st->time_base.den * (int64_t)ref_st->time_base.num,
1646 st->time_base.num * (int64_t)ref_st->time_base.den);
1650 void ff_reduce_index(AVFormatContext *s, int stream_index)
1652 AVStream *st= s->streams[stream_index];
1653 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1655 if((unsigned)st->nb_index_entries >= max_entries){
1657 for(i=0; 2*i<st->nb_index_entries; i++)
1658 st->index_entries[i]= st->index_entries[2*i];
1659 st->nb_index_entries= i;
1663 int ff_add_index_entry(AVIndexEntry **index_entries,
1664 int *nb_index_entries,
1665 unsigned int *index_entries_allocated_size,
1666 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1668 AVIndexEntry *entries, *ie;
1671 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1674 if(timestamp == AV_NOPTS_VALUE)
1675 return AVERROR(EINVAL);
1677 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1678 timestamp -= RELATIVE_TS_BASE;
1680 entries = av_fast_realloc(*index_entries,
1681 index_entries_allocated_size,
1682 (*nb_index_entries + 1) *
1683 sizeof(AVIndexEntry));
1687 *index_entries= entries;
1689 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1692 index= (*nb_index_entries)++;
1693 ie= &entries[index];
1694 assert(index==0 || ie[-1].timestamp < timestamp);
1696 ie= &entries[index];
1697 if(ie->timestamp != timestamp){
1698 if(ie->timestamp <= timestamp)
1700 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1701 (*nb_index_entries)++;
1702 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1703 distance= ie->min_distance;
1707 ie->timestamp = timestamp;
1708 ie->min_distance= distance;
1715 int av_add_index_entry(AVStream *st,
1716 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1718 timestamp = wrap_timestamp(st, timestamp);
1719 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1720 &st->index_entries_allocated_size, pos,
1721 timestamp, size, distance, flags);
1724 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1725 int64_t wanted_timestamp, int flags)
1733 //optimize appending index entries at the end
1734 if(b && entries[b-1].timestamp < wanted_timestamp)
1739 timestamp = entries[m].timestamp;
1740 if(timestamp >= wanted_timestamp)
1742 if(timestamp <= wanted_timestamp)
1745 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1747 if(!(flags & AVSEEK_FLAG_ANY)){
1748 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1749 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1758 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1761 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1762 wanted_timestamp, flags);
1765 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1766 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1768 return wrap_timestamp(s->streams[stream_index], read_timestamp(s, stream_index, ppos, pos_limit));
1771 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1773 AVInputFormat *avif= s->iformat;
1774 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1775 int64_t ts_min, ts_max, ts;
1780 if (stream_index < 0)
1783 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1786 ts_min= AV_NOPTS_VALUE;
1787 pos_limit= -1; //gcc falsely says it may be uninitialized
1789 st= s->streams[stream_index];
1790 if(st->index_entries){
1793 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()
1794 index= FFMAX(index, 0);
1795 e= &st->index_entries[index];
1797 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1799 ts_min= e->timestamp;
1800 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1801 pos_min, av_ts2str(ts_min));
1806 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1807 assert(index < st->nb_index_entries);
1809 e= &st->index_entries[index];
1810 assert(e->timestamp >= target_ts);
1812 ts_max= e->timestamp;
1813 pos_limit= pos_max - e->min_distance;
1814 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1815 pos_max, pos_limit, av_ts2str(ts_max));
1819 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1824 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1827 ff_read_frame_flush(s);
1828 ff_update_cur_dts(s, st, ts);
1833 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1834 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1835 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1836 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1839 int64_t start_pos, filesize;
1842 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1844 if(ts_min == AV_NOPTS_VALUE){
1845 pos_min = s->data_offset;
1846 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1847 if (ts_min == AV_NOPTS_VALUE)
1851 if(ts_min >= target_ts){
1856 if(ts_max == AV_NOPTS_VALUE){
1858 filesize = avio_size(s->pb);
1859 pos_max = filesize - 1;
1862 ts_max = ff_read_timestamp(s, stream_index, &pos_max, pos_max + step, read_timestamp);
1864 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1865 if (ts_max == AV_NOPTS_VALUE)
1869 int64_t tmp_pos= pos_max + 1;
1870 int64_t tmp_ts= ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1871 if(tmp_ts == AV_NOPTS_VALUE)
1875 if(tmp_pos >= filesize)
1881 if(ts_max <= target_ts){
1886 if(ts_min > ts_max){
1888 }else if(ts_min == ts_max){
1893 while (pos_min < pos_limit) {
1894 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1895 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1896 assert(pos_limit <= pos_max);
1899 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1900 // interpolate position (better than dichotomy)
1901 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1902 + pos_min - approximate_keyframe_distance;
1903 }else if(no_change==1){
1904 // bisection, if interpolation failed to change min or max pos last time
1905 pos = (pos_min + pos_limit)>>1;
1907 /* linear search if bisection failed, can only happen if there
1908 are very few or no keyframes between min/max */
1913 else if(pos > pos_limit)
1917 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1922 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1923 pos_min, pos, pos_max,
1924 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1925 pos_limit, start_pos, no_change);
1926 if(ts == AV_NOPTS_VALUE){
1927 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1930 assert(ts != AV_NOPTS_VALUE);
1931 if (target_ts <= ts) {
1932 pos_limit = start_pos - 1;
1936 if (target_ts >= ts) {
1942 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1943 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1946 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1948 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1949 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1950 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1956 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1957 int64_t pos_min, pos_max;
1959 pos_min = s->data_offset;
1960 pos_max = avio_size(s->pb) - 1;
1962 if (pos < pos_min) pos= pos_min;
1963 else if(pos > pos_max) pos= pos_max;
1965 avio_seek(s->pb, pos, SEEK_SET);
1970 static int seek_frame_generic(AVFormatContext *s,
1971 int stream_index, int64_t timestamp, int flags)
1978 st = s->streams[stream_index];
1980 index = av_index_search_timestamp(st, timestamp, flags);
1982 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1985 if(index < 0 || index==st->nb_index_entries-1){
1989 if(st->nb_index_entries){
1990 assert(st->index_entries);
1991 ie= &st->index_entries[st->nb_index_entries-1];
1992 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1994 ff_update_cur_dts(s, st, ie->timestamp);
1996 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
2002 read_status = av_read_frame(s, &pkt);
2003 } while (read_status == AVERROR(EAGAIN));
2004 if (read_status < 0)
2006 av_free_packet(&pkt);
2007 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
2008 if(pkt.flags & AV_PKT_FLAG_KEY)
2010 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
2011 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);
2016 index = av_index_search_timestamp(st, timestamp, flags);
2021 ff_read_frame_flush(s);
2022 if (s->iformat->read_seek){
2023 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2026 ie = &st->index_entries[index];
2027 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2029 ff_update_cur_dts(s, st, ie->timestamp);
2034 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2035 int64_t timestamp, int flags)
2040 if (flags & AVSEEK_FLAG_BYTE) {
2041 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2043 ff_read_frame_flush(s);
2044 return seek_frame_byte(s, stream_index, timestamp, flags);
2047 if(stream_index < 0){
2048 stream_index= av_find_default_stream_index(s);
2049 if(stream_index < 0)
2052 st= s->streams[stream_index];
2053 /* timestamp for default must be expressed in AV_TIME_BASE units */
2054 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2057 /* first, we try the format specific seek */
2058 if (s->iformat->read_seek) {
2059 ff_read_frame_flush(s);
2060 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2067 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2068 ff_read_frame_flush(s);
2069 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2070 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2071 ff_read_frame_flush(s);
2072 return seek_frame_generic(s, stream_index, timestamp, flags);
2078 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2080 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
2083 avformat_queue_attached_pictures(s);
2088 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2090 if(min_ts > ts || max_ts < ts)
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 avformat_queue_attached_pictures(s);
2115 if(s->iformat->read_timestamp){
2116 //try to seek via read_timestamp()
2119 //Fallback to old API if new is not implemented but old is
2120 //Note the old 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 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2226 (double)ic->duration;
2230 static void fill_all_stream_timings(AVFormatContext *ic)
2235 update_stream_timings(ic);
2236 for(i = 0;i < ic->nb_streams; i++) {
2237 st = ic->streams[i];
2238 if (st->start_time == AV_NOPTS_VALUE) {
2239 if(ic->start_time != AV_NOPTS_VALUE)
2240 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2241 if(ic->duration != AV_NOPTS_VALUE)
2242 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2247 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2249 int64_t filesize, duration;
2253 /* if bit_rate is already set, we believe it */
2254 if (ic->bit_rate <= 0) {
2256 for(i=0;i<ic->nb_streams;i++) {
2257 st = ic->streams[i];
2258 if (st->codec->bit_rate > 0)
2259 bit_rate += st->codec->bit_rate;
2261 ic->bit_rate = bit_rate;
2264 /* if duration is already set, we believe it */
2265 if (ic->duration == AV_NOPTS_VALUE &&
2266 ic->bit_rate != 0) {
2267 filesize = ic->pb ? avio_size(ic->pb) : 0;
2269 for(i = 0; i < ic->nb_streams; i++) {
2270 st = ic->streams[i];
2271 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2272 if (st->duration == AV_NOPTS_VALUE)
2273 st->duration = duration;
2279 #define DURATION_MAX_READ_SIZE 250000LL
2280 #define DURATION_MAX_RETRY 4
2282 /* only usable for MPEG-PS streams */
2283 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2285 AVPacket pkt1, *pkt = &pkt1;
2287 int read_size, i, ret;
2289 int64_t filesize, offset, duration;
2292 /* flush packet queue */
2293 flush_packet_queue(ic);
2295 for (i=0; i<ic->nb_streams; i++) {
2296 st = ic->streams[i];
2297 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2298 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2301 av_parser_close(st->parser);
2306 /* estimate the end time (duration) */
2307 /* XXX: may need to support wrapping */
2308 filesize = ic->pb ? avio_size(ic->pb) : 0;
2309 end_time = AV_NOPTS_VALUE;
2311 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2315 avio_seek(ic->pb, offset, SEEK_SET);
2318 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2322 ret = ff_read_packet(ic, pkt);
2323 } while(ret == AVERROR(EAGAIN));
2326 read_size += pkt->size;
2327 st = ic->streams[pkt->stream_index];
2328 if (pkt->pts != AV_NOPTS_VALUE &&
2329 (st->start_time != AV_NOPTS_VALUE ||
2330 st->first_dts != AV_NOPTS_VALUE)) {
2331 duration = end_time = pkt->pts;
2332 if (st->start_time != AV_NOPTS_VALUE)
2333 duration -= st->start_time;
2335 duration -= st->first_dts;
2337 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2338 st->duration = duration;
2341 av_free_packet(pkt);
2343 }while( end_time==AV_NOPTS_VALUE
2344 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2345 && ++retry <= DURATION_MAX_RETRY);
2347 fill_all_stream_timings(ic);
2349 avio_seek(ic->pb, old_offset, SEEK_SET);
2350 for (i=0; i<ic->nb_streams; i++) {
2352 st->cur_dts= st->first_dts;
2353 st->last_IP_pts = AV_NOPTS_VALUE;
2354 st->reference_dts = AV_NOPTS_VALUE;
2358 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2362 /* get the file size, if possible */
2363 if (ic->iformat->flags & AVFMT_NOFILE) {
2366 file_size = avio_size(ic->pb);
2367 file_size = FFMAX(0, file_size);
2370 if ((!strcmp(ic->iformat->name, "mpeg") ||
2371 !strcmp(ic->iformat->name, "mpegts")) &&
2372 file_size && ic->pb->seekable) {
2373 /* get accurate estimate from the PTSes */
2374 estimate_timings_from_pts(ic, old_offset);
2375 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2376 } else if (has_duration(ic)) {
2377 /* at least one component has timings - we use them for all
2379 fill_all_stream_timings(ic);
2380 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2382 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2383 /* less precise: use bitrate info */
2384 estimate_timings_from_bit_rate(ic);
2385 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2387 update_stream_timings(ic);
2391 AVStream av_unused *st;
2392 for(i = 0;i < ic->nb_streams; i++) {
2393 st = ic->streams[i];
2394 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2395 (double) st->start_time / AV_TIME_BASE,
2396 (double) st->duration / AV_TIME_BASE);
2398 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2399 (double) ic->start_time / AV_TIME_BASE,
2400 (double) ic->duration / AV_TIME_BASE,
2401 ic->bit_rate / 1000);
2405 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2407 AVCodecContext *avctx = st->codec;
2409 #define FAIL(errmsg) do { \
2411 *errmsg_ptr = errmsg; \
2415 switch (avctx->codec_type) {
2416 case AVMEDIA_TYPE_AUDIO:
2417 if (!avctx->frame_size && determinable_frame_size(avctx))
2418 FAIL("unspecified frame size");
2419 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2420 FAIL("unspecified sample format");
2421 if (!avctx->sample_rate)
2422 FAIL("unspecified sample rate");
2423 if (!avctx->channels)
2424 FAIL("unspecified number of channels");
2425 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2426 FAIL("no decodable DTS frames");
2428 case AVMEDIA_TYPE_VIDEO:
2430 FAIL("unspecified size");
2431 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2432 FAIL("unspecified pixel format");
2434 case AVMEDIA_TYPE_SUBTITLE:
2435 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2436 FAIL("unspecified size");
2438 case AVMEDIA_TYPE_DATA:
2439 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2442 if (avctx->codec_id == AV_CODEC_ID_NONE)
2443 FAIL("unknown codec");
2447 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2448 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2450 const AVCodec *codec;
2451 int got_picture = 1, ret = 0;
2452 AVFrame *frame = avcodec_alloc_frame();
2453 AVSubtitle subtitle;
2454 AVPacket pkt = *avpkt;
2457 return AVERROR(ENOMEM);
2459 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2460 AVDictionary *thread_opt = NULL;
2462 codec = st->codec->codec ? st->codec->codec :
2463 avcodec_find_decoder(st->codec->codec_id);
2466 st->info->found_decoder = -1;
2471 /* force thread count to 1 since the h264 decoder will not extract SPS
2472 * and PPS to extradata during multi-threaded decoding */
2473 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2474 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2476 av_dict_free(&thread_opt);
2478 st->info->found_decoder = -1;
2481 st->info->found_decoder = 1;
2482 } else if (!st->info->found_decoder)
2483 st->info->found_decoder = 1;
2485 if (st->info->found_decoder < 0) {
2490 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2492 (!has_codec_parameters(st, NULL) ||
2493 !has_decode_delay_been_guessed(st) ||
2494 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2496 avcodec_get_frame_defaults(frame);
2497 switch(st->codec->codec_type) {
2498 case AVMEDIA_TYPE_VIDEO:
2499 ret = avcodec_decode_video2(st->codec, frame,
2500 &got_picture, &pkt);
2502 case AVMEDIA_TYPE_AUDIO:
2503 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2505 case AVMEDIA_TYPE_SUBTITLE:
2506 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2507 &got_picture, &pkt);
2515 st->nb_decoded_frames++;
2522 if(!pkt.data && !got_picture)
2526 avcodec_free_frame(&frame);
2530 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2532 while (tags->id != AV_CODEC_ID_NONE) {
2540 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2543 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2544 if(tag == tags[i].tag)
2547 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2548 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2551 return AV_CODEC_ID_NONE;
2554 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2558 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2559 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2560 default: return AV_CODEC_ID_NONE;
2565 if (sflags & (1 << (bps - 1))) {
2567 case 1: return AV_CODEC_ID_PCM_S8;
2568 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2569 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2570 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2571 default: return AV_CODEC_ID_NONE;
2575 case 1: return AV_CODEC_ID_PCM_U8;
2576 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2577 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2578 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2579 default: return AV_CODEC_ID_NONE;
2585 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2588 for(i=0; tags && tags[i]; i++){
2589 int tag= ff_codec_get_tag(tags[i], id);
2595 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2598 for(i=0; tags && tags[i]; i++){
2599 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2600 if(id!=AV_CODEC_ID_NONE) return id;
2602 return AV_CODEC_ID_NONE;
2605 static void compute_chapters_end(AVFormatContext *s)
2608 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2610 for (i = 0; i < s->nb_chapters; i++)
2611 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2612 AVChapter *ch = s->chapters[i];
2613 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2616 for (j = 0; j < s->nb_chapters; j++) {
2617 AVChapter *ch1 = s->chapters[j];
2618 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2619 if (j != i && next_start > ch->start && next_start < end)
2622 ch->end = (end == INT64_MAX) ? ch->start : end;
2626 static int get_std_framerate(int i){
2627 if(i<60*12) return (i+1)*1001;
2628 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2632 * Is the time base unreliable.
2633 * This is a heuristic to balance between quick acceptance of the values in
2634 * the headers vs. some extra checks.
2635 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2636 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2637 * And there are "variable" fps files this needs to detect as well.
2639 static int tb_unreliable(AVCodecContext *c){
2640 if( c->time_base.den >= 101L*c->time_base.num
2641 || c->time_base.den < 5L*c->time_base.num
2642 /* || c->codec_tag == AV_RL32("DIVX")
2643 || c->codec_tag == AV_RL32("XVID")*/
2644 || c->codec_tag == AV_RL32("mp4v")
2645 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2646 || c->codec_id == AV_CODEC_ID_H264
2652 #if FF_API_FORMAT_PARAMETERS
2653 int av_find_stream_info(AVFormatContext *ic)
2655 return avformat_find_stream_info(ic, NULL);
2659 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2661 int i, count, ret, read_size, j;
2663 AVPacket pkt1, *pkt;
2664 int64_t old_offset = avio_tell(ic->pb);
2665 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2666 int flush_codecs = ic->probesize > 0;
2669 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2671 for(i=0;i<ic->nb_streams;i++) {
2672 const AVCodec *codec;
2673 AVDictionary *thread_opt = NULL;
2674 st = ic->streams[i];
2676 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2677 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2678 /* if(!st->time_base.num)
2680 if(!st->codec->time_base.num)
2681 st->codec->time_base= st->time_base;
2683 //only for the split stuff
2684 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2685 st->parser = av_parser_init(st->codec->codec_id);
2687 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2688 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2689 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2690 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2692 } else if (st->need_parsing) {
2693 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2694 "%s, packets or times may be invalid.\n",
2695 avcodec_get_name(st->codec->codec_id));
2698 codec = st->codec->codec ? st->codec->codec :
2699 avcodec_find_decoder(st->codec->codec_id);
2701 /* force thread count to 1 since the h264 decoder will not extract SPS
2702 * and PPS to extradata during multi-threaded decoding */
2703 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2705 /* Ensure that subtitle_header is properly set. */
2706 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2707 && codec && !st->codec->codec)
2708 avcodec_open2(st->codec, codec, options ? &options[i]
2711 //try to just open decoders, in case this is enough to get parameters
2712 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2713 if (codec && !st->codec->codec)
2714 avcodec_open2(st->codec, codec, options ? &options[i]
2718 av_dict_free(&thread_opt);
2721 for (i=0; i<ic->nb_streams; i++) {
2722 #if FF_API_R_FRAME_RATE
2723 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2725 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2726 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2732 if (ff_check_interrupt(&ic->interrupt_callback)){
2734 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2738 /* check if one codec still needs to be handled */
2739 for(i=0;i<ic->nb_streams;i++) {
2740 int fps_analyze_framecount = 20;
2742 st = ic->streams[i];
2743 if (!has_codec_parameters(st, NULL))
2745 /* if the timebase is coarse (like the usual millisecond precision
2746 of mkv), we need to analyze more frames to reliably arrive at
2748 if (av_q2d(st->time_base) > 0.0005)
2749 fps_analyze_framecount *= 2;
2750 if (ic->fps_probe_size >= 0)
2751 fps_analyze_framecount = ic->fps_probe_size;
2752 /* variable fps and no guess at the real fps */
2753 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2754 && st->info->duration_count < fps_analyze_framecount
2755 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2757 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2759 if (st->first_dts == AV_NOPTS_VALUE &&
2760 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2761 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2764 if (i == ic->nb_streams) {
2765 /* NOTE: if the format has no header, then we need to read
2766 some packets to get most of the streams, so we cannot
2768 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2769 /* if we found the info for all the codecs, we can stop */
2771 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2776 /* we did not get all the codec info, but we read too much data */
2777 if (read_size >= ic->probesize) {
2779 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2780 for (i = 0; i < ic->nb_streams; i++)
2781 if (!ic->streams[i]->r_frame_rate.num &&
2782 ic->streams[i]->info->duration_count <= 1)
2783 av_log(ic, AV_LOG_WARNING,
2784 "Stream #%d: not enough frames to estimate rate; "
2785 "consider increasing probesize\n", i);
2789 /* NOTE: a new stream can be added there if no header in file
2790 (AVFMTCTX_NOHEADER) */
2791 ret = read_frame_internal(ic, &pkt1);
2792 if (ret == AVERROR(EAGAIN))
2800 if (ic->flags & AVFMT_FLAG_NOBUFFER) {
2803 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2804 &ic->packet_buffer_end);
2805 if ((ret = av_dup_packet(pkt)) < 0)
2806 goto find_stream_info_err;
2809 read_size += pkt->size;
2811 st = ic->streams[pkt->stream_index];
2812 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2813 /* check for non-increasing dts */
2814 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2815 st->info->fps_last_dts >= pkt->dts) {
2816 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2817 "packet %d with DTS %"PRId64", packet %d with DTS "
2818 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2819 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2820 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2822 /* check for a discontinuity in dts - if the difference in dts
2823 * is more than 1000 times the average packet duration in the sequence,
2824 * we treat it as a discontinuity */
2825 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2826 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2827 (pkt->dts - st->info->fps_last_dts) / 1000 >
2828 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2829 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2830 "packet %d with DTS %"PRId64", packet %d with DTS "
2831 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2832 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2833 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2836 /* update stored dts values */
2837 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
2838 st->info->fps_first_dts = pkt->dts;
2839 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
2841 st->info->fps_last_dts = pkt->dts;
2842 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
2844 if (st->codec_info_nb_frames>1) {
2846 if (st->time_base.den > 0)
2847 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2848 if (st->avg_frame_rate.num > 0)
2849 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
2851 if (t >= ic->max_analyze_duration) {
2852 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
2855 if (pkt->duration) {
2856 st->info->codec_info_duration += pkt->duration;
2857 st->info->codec_info_duration_fields += st->parser && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
2860 #if FF_API_R_FRAME_RATE
2862 int64_t last = st->info->last_dts;
2864 if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
2865 && pkt->dts - (uint64_t)last < INT64_MAX){
2866 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2867 int64_t duration= pkt->dts - last;
2869 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2870 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2871 for (i=0; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2872 int framerate= get_std_framerate(i);
2873 double sdts= dts*framerate/(1001*12);
2875 int64_t ticks= llrint(sdts+j*0.5);
2876 double error= sdts - ticks + j*0.5;
2877 st->info->duration_error[j][0][i] += error;
2878 st->info->duration_error[j][1][i] += error*error;
2881 st->info->duration_count++;
2882 // ignore the first 4 values, they might have some random jitter
2883 if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
2884 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2886 if (pkt->dts != AV_NOPTS_VALUE)
2887 st->info->last_dts = pkt->dts;
2890 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2891 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2892 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2893 st->codec->extradata_size= i;
2894 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2895 if (!st->codec->extradata)
2896 return AVERROR(ENOMEM);
2897 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2898 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2902 /* if still no information, we try to open the codec and to
2903 decompress the frame. We try to avoid that in most cases as
2904 it takes longer and uses more memory. For MPEG-4, we need to
2905 decompress for QuickTime.
2907 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2908 least one frame of codec data, this makes sure the codec initializes
2909 the channel configuration and does not only trust the values from the container.
2911 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2913 st->codec_info_nb_frames++;
2918 AVPacket empty_pkt = { 0 };
2920 av_init_packet(&empty_pkt);
2922 ret = -1; /* we could not have all the codec parameters before EOF */
2923 for(i=0;i<ic->nb_streams;i++) {
2926 st = ic->streams[i];
2928 /* flush the decoders */
2929 if (st->info->found_decoder == 1) {
2931 err = try_decode_frame(st, &empty_pkt,
2932 (options && i < orig_nb_streams) ?
2933 &options[i] : NULL);
2934 } while (err > 0 && !has_codec_parameters(st, NULL));
2937 av_log(ic, AV_LOG_INFO,
2938 "decoding for stream %d failed\n", st->index);
2942 if (!has_codec_parameters(st, &errmsg)) {
2944 avcodec_string(buf, sizeof(buf), st->codec, 0);
2945 av_log(ic, AV_LOG_WARNING,
2946 "Could not find codec parameters for stream %d (%s): %s\n"
2947 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
2955 // close codecs which were opened in try_decode_frame()
2956 for(i=0;i<ic->nb_streams;i++) {
2957 st = ic->streams[i];
2958 avcodec_close(st->codec);
2960 for(i=0;i<ic->nb_streams;i++) {
2961 st = ic->streams[i];
2962 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2963 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2964 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2965 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2966 st->codec->codec_tag= tag;
2969 /* estimate average framerate if not set by demuxer */
2970 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
2972 double best_error = 0.01;
2974 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2975 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
2976 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
2978 /* round guessed framerate to a "standard" framerate if it's
2979 * within 1% of the original estimate*/
2980 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
2981 AVRational std_fps = { get_std_framerate(j), 12*1001 };
2982 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
2984 if (error < best_error) {
2986 best_fps = std_fps.num;
2990 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2991 best_fps, 12*1001, INT_MAX);
2994 // the check for tb_unreliable() is not completely correct, since this is not about handling
2995 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2996 // ipmovie.c produces.
2997 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)
2998 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);
2999 if (st->info->duration_count>1 && !st->r_frame_rate.num
3000 && tb_unreliable(st->codec)) {
3002 double best_error= 0.01;
3004 for (j=0; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
3007 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3009 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
3012 int n= st->info->duration_count;
3013 double a= st->info->duration_error[k][0][j] / n;
3014 double error= st->info->duration_error[k][1][j]/n - a*a;
3016 if(error < best_error && best_error> 0.000000001){
3018 num = get_std_framerate(j);
3021 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3024 // do not increase frame rate by more than 1 % in order to match a standard rate.
3025 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
3026 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3029 if (!st->r_frame_rate.num){
3030 if( st->codec->time_base.den * (int64_t)st->time_base.num
3031 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3032 st->r_frame_rate.num = st->codec->time_base.den;
3033 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3035 st->r_frame_rate.num = st->time_base.den;
3036 st->r_frame_rate.den = st->time_base.num;
3039 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3040 if(!st->codec->bits_per_coded_sample)
3041 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3042 // set stream disposition based on audio service type
3043 switch (st->codec->audio_service_type) {
3044 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3045 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3046 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3047 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3048 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3049 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3050 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3051 st->disposition = AV_DISPOSITION_COMMENT; break;
3052 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3053 st->disposition = AV_DISPOSITION_KARAOKE; break;
3059 estimate_timings(ic, old_offset);
3061 compute_chapters_end(ic);
3063 find_stream_info_err:
3064 for (i=0; i < ic->nb_streams; i++) {
3065 if (ic->streams[i]->codec)
3066 ic->streams[i]->codec->thread_count = 0;
3067 av_freep(&ic->streams[i]->info);
3070 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
3074 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3078 for (i = 0; i < ic->nb_programs; i++) {
3079 if (ic->programs[i] == last) {
3083 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3084 if (ic->programs[i]->stream_index[j] == s)
3085 return ic->programs[i];
3091 int av_find_best_stream(AVFormatContext *ic,
3092 enum AVMediaType type,
3093 int wanted_stream_nb,
3095 AVCodec **decoder_ret,
3098 int i, nb_streams = ic->nb_streams;
3099 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3100 unsigned *program = NULL;
3101 AVCodec *decoder = NULL, *best_decoder = NULL;
3103 if (related_stream >= 0 && wanted_stream_nb < 0) {
3104 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3106 program = p->stream_index;
3107 nb_streams = p->nb_stream_indexes;
3110 for (i = 0; i < nb_streams; i++) {
3111 int real_stream_index = program ? program[i] : i;
3112 AVStream *st = ic->streams[real_stream_index];
3113 AVCodecContext *avctx = st->codec;
3114 if (avctx->codec_type != type)
3116 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3118 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3121 decoder = avcodec_find_decoder(st->codec->codec_id);
3124 ret = AVERROR_DECODER_NOT_FOUND;
3128 count = st->codec_info_nb_frames;
3129 bitrate = avctx->bit_rate;
3130 multiframe = FFMIN(5, count);
3131 if ((best_multiframe > multiframe) ||
3132 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3133 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3136 best_bitrate = bitrate;
3137 best_multiframe = multiframe;
3138 ret = real_stream_index;
3139 best_decoder = decoder;
3140 if (program && i == nb_streams - 1 && ret < 0) {
3142 nb_streams = ic->nb_streams;
3143 i = 0; /* no related stream found, try again with everything */
3147 *decoder_ret = best_decoder;
3151 /*******************************************************/
3153 int av_read_play(AVFormatContext *s)
3155 if (s->iformat->read_play)
3156 return s->iformat->read_play(s);
3158 return avio_pause(s->pb, 0);
3159 return AVERROR(ENOSYS);
3162 int av_read_pause(AVFormatContext *s)
3164 if (s->iformat->read_pause)
3165 return s->iformat->read_pause(s);
3167 return avio_pause(s->pb, 1);
3168 return AVERROR(ENOSYS);
3171 void ff_free_stream(AVFormatContext *s, AVStream *st){
3172 av_assert0(s->nb_streams>0);
3173 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3176 av_parser_close(st->parser);
3178 if (st->attached_pic.data)
3179 av_free_packet(&st->attached_pic);
3180 av_dict_free(&st->metadata);
3181 av_freep(&st->index_entries);
3182 av_freep(&st->codec->extradata);
3183 av_freep(&st->codec->subtitle_header);
3184 av_freep(&st->codec);
3185 av_freep(&st->priv_data);
3186 av_freep(&st->info);
3187 av_freep(&st->probe_data.buf);
3188 av_freep(&s->streams[ --s->nb_streams ]);
3191 void avformat_free_context(AVFormatContext *s)
3199 if (s->iformat && s->iformat->priv_class && s->priv_data)
3200 av_opt_free(s->priv_data);
3202 for(i=s->nb_streams-1; i>=0; i--) {
3203 ff_free_stream(s, s->streams[i]);
3205 for(i=s->nb_programs-1; i>=0; i--) {
3206 av_dict_free(&s->programs[i]->metadata);
3207 av_freep(&s->programs[i]->stream_index);
3208 av_freep(&s->programs[i]);
3210 av_freep(&s->programs);
3211 av_freep(&s->priv_data);
3212 while(s->nb_chapters--) {
3213 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3214 av_freep(&s->chapters[s->nb_chapters]);
3216 av_freep(&s->chapters);
3217 av_dict_free(&s->metadata);
3218 av_freep(&s->streams);
3222 #if FF_API_CLOSE_INPUT_FILE
3223 void av_close_input_file(AVFormatContext *s)
3225 avformat_close_input(&s);
3229 void avformat_close_input(AVFormatContext **ps)
3231 AVFormatContext *s = *ps;
3232 AVIOContext *pb = s->pb;
3234 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3235 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3238 flush_packet_queue(s);
3241 if (s->iformat->read_close)
3242 s->iformat->read_close(s);
3245 avformat_free_context(s);
3252 #if FF_API_NEW_STREAM
3253 AVStream *av_new_stream(AVFormatContext *s, int id)
3255 AVStream *st = avformat_new_stream(s, NULL);
3262 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3268 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3270 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
3273 s->streams = streams;
3275 st = av_mallocz(sizeof(AVStream));
3278 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3282 st->info->last_dts = AV_NOPTS_VALUE;
3284 st->codec = avcodec_alloc_context3(c);
3286 /* no default bitrate if decoding */
3287 st->codec->bit_rate = 0;
3289 st->index = s->nb_streams;
3290 st->start_time = AV_NOPTS_VALUE;
3291 st->duration = AV_NOPTS_VALUE;
3292 /* we set the current DTS to 0 so that formats without any timestamps
3293 but durations get some timestamps, formats with some unknown
3294 timestamps have their first few packets buffered and the
3295 timestamps corrected before they are returned to the user */
3296 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3297 st->first_dts = AV_NOPTS_VALUE;
3298 st->probe_packets = MAX_PROBE_PACKETS;
3299 st->pts_wrap_reference = AV_NOPTS_VALUE;
3300 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3302 /* default pts setting is MPEG-like */
3303 avpriv_set_pts_info(st, 33, 1, 90000);
3304 st->last_IP_pts = AV_NOPTS_VALUE;
3305 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3306 st->pts_buffer[i]= AV_NOPTS_VALUE;
3307 st->reference_dts = AV_NOPTS_VALUE;
3309 st->sample_aspect_ratio = (AVRational){0,1};
3311 #if FF_API_R_FRAME_RATE
3312 st->info->last_dts = AV_NOPTS_VALUE;
3314 st->info->fps_first_dts = AV_NOPTS_VALUE;
3315 st->info->fps_last_dts = AV_NOPTS_VALUE;
3317 s->streams[s->nb_streams++] = st;
3321 AVProgram *av_new_program(AVFormatContext *ac, int id)
3323 AVProgram *program=NULL;
3326 av_dlog(ac, "new_program: id=0x%04x\n", id);
3328 for(i=0; i<ac->nb_programs; i++)
3329 if(ac->programs[i]->id == id)
3330 program = ac->programs[i];
3333 program = av_mallocz(sizeof(AVProgram));
3336 dynarray_add(&ac->programs, &ac->nb_programs, program);
3337 program->discard = AVDISCARD_NONE;
3340 program->pts_wrap_reference = AV_NOPTS_VALUE;
3341 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3343 program->start_time =
3344 program->end_time = AV_NOPTS_VALUE;
3349 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3351 AVChapter *chapter = NULL;
3354 for(i=0; i<s->nb_chapters; i++)
3355 if(s->chapters[i]->id == id)
3356 chapter = s->chapters[i];
3359 chapter= av_mallocz(sizeof(AVChapter));
3362 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3364 av_dict_set(&chapter->metadata, "title", title, 0);
3366 chapter->time_base= time_base;
3367 chapter->start = start;
3373 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3376 AVProgram *program=NULL;
3379 if (idx >= ac->nb_streams) {
3380 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3384 for(i=0; i<ac->nb_programs; i++){
3385 if(ac->programs[i]->id != progid)
3387 program = ac->programs[i];
3388 for(j=0; j<program->nb_stream_indexes; j++)
3389 if(program->stream_index[j] == idx)
3392 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3395 program->stream_index = tmp;
3396 program->stream_index[program->nb_stream_indexes++] = idx;
3401 static void print_fps(double d, const char *postfix){
3402 uint64_t v= lrintf(d*100);
3403 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3404 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3405 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3408 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3410 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3411 AVDictionaryEntry *tag=NULL;
3413 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3414 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3415 if(strcmp("language", tag->key)){
3416 const char *p = tag->value;
3417 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3420 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3421 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3422 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3424 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3425 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3428 av_log(ctx, AV_LOG_INFO, "\n");
3434 /* "user interface" functions */
3435 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3438 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3439 AVStream *st = ic->streams[i];
3440 int g = av_gcd(st->time_base.num, st->time_base.den);
3441 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3442 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3443 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3444 /* the pid is an important information, so we display it */
3445 /* XXX: add a generic system */
3446 if (flags & AVFMT_SHOW_IDS)
3447 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3449 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3450 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3451 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3452 if (st->sample_aspect_ratio.num && // default
3453 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3454 AVRational display_aspect_ratio;
3455 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3456 st->codec->width*st->sample_aspect_ratio.num,
3457 st->codec->height*st->sample_aspect_ratio.den,
3459 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3460 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3461 display_aspect_ratio.num, display_aspect_ratio.den);
3463 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3464 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3465 print_fps(av_q2d(st->avg_frame_rate), "fps");
3466 #if FF_API_R_FRAME_RATE
3467 if(st->r_frame_rate.den && st->r_frame_rate.num)
3468 print_fps(av_q2d(st->r_frame_rate), "tbr");
3470 if(st->time_base.den && st->time_base.num)
3471 print_fps(1/av_q2d(st->time_base), "tbn");
3472 if(st->codec->time_base.den && st->codec->time_base.num)
3473 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3475 if (st->disposition & AV_DISPOSITION_DEFAULT)
3476 av_log(NULL, AV_LOG_INFO, " (default)");
3477 if (st->disposition & AV_DISPOSITION_DUB)
3478 av_log(NULL, AV_LOG_INFO, " (dub)");
3479 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3480 av_log(NULL, AV_LOG_INFO, " (original)");
3481 if (st->disposition & AV_DISPOSITION_COMMENT)
3482 av_log(NULL, AV_LOG_INFO, " (comment)");
3483 if (st->disposition & AV_DISPOSITION_LYRICS)
3484 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3485 if (st->disposition & AV_DISPOSITION_KARAOKE)
3486 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3487 if (st->disposition & AV_DISPOSITION_FORCED)
3488 av_log(NULL, AV_LOG_INFO, " (forced)");
3489 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3490 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3491 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3492 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3493 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3494 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3495 av_log(NULL, AV_LOG_INFO, "\n");
3496 dump_metadata(NULL, st->metadata, " ");
3499 void av_dump_format(AVFormatContext *ic,
3505 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3506 if (ic->nb_streams && !printed)
3509 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3510 is_output ? "Output" : "Input",
3512 is_output ? ic->oformat->name : ic->iformat->name,
3513 is_output ? "to" : "from", url);
3514 dump_metadata(NULL, ic->metadata, " ");
3516 av_log(NULL, AV_LOG_INFO, " Duration: ");
3517 if (ic->duration != AV_NOPTS_VALUE) {
3518 int hours, mins, secs, us;
3519 int64_t duration = ic->duration + 5000;
3520 secs = duration / AV_TIME_BASE;
3521 us = duration % AV_TIME_BASE;
3526 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3527 (100 * us) / AV_TIME_BASE);
3529 av_log(NULL, AV_LOG_INFO, "N/A");
3531 if (ic->start_time != AV_NOPTS_VALUE) {
3533 av_log(NULL, AV_LOG_INFO, ", start: ");
3534 secs = ic->start_time / AV_TIME_BASE;
3535 us = abs(ic->start_time % AV_TIME_BASE);
3536 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3537 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3539 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3541 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3543 av_log(NULL, AV_LOG_INFO, "N/A");
3545 av_log(NULL, AV_LOG_INFO, "\n");
3547 for (i = 0; i < ic->nb_chapters; i++) {
3548 AVChapter *ch = ic->chapters[i];
3549 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3550 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3551 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3553 dump_metadata(NULL, ch->metadata, " ");
3555 if(ic->nb_programs) {
3556 int j, k, total = 0;
3557 for(j=0; j<ic->nb_programs; j++) {
3558 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3560 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3561 name ? name->value : "");
3562 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3563 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3564 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3565 printed[ic->programs[j]->stream_index[k]] = 1;
3567 total += ic->programs[j]->nb_stream_indexes;
3569 if (total < ic->nb_streams)
3570 av_log(NULL, AV_LOG_INFO, " No Program\n");
3572 for(i=0;i<ic->nb_streams;i++)
3574 dump_stream_format(ic, i, index, is_output);
3579 #if FF_API_AV_GETTIME && CONFIG_SHARED && HAVE_SYMVER
3580 FF_SYMVER(int64_t, av_gettime, (void), "LIBAVFORMAT_54")
3582 return av_gettime();
3586 uint64_t ff_ntp_time(void)
3588 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3591 int av_get_frame_filename(char *buf, int buf_size,
3592 const char *path, int number)
3595 char *q, buf1[20], c;
3596 int nd, len, percentd_found;
3608 while (isdigit(*p)) {
3609 nd = nd * 10 + *p++ - '0';
3612 } while (isdigit(c));
3621 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3623 if ((q - buf + len) > buf_size - 1)
3625 memcpy(q, buf1, len);
3633 if ((q - buf) < buf_size - 1)
3637 if (!percentd_found)
3646 static void hex_dump_internal(void *avcl, FILE *f, int level,
3647 const uint8_t *buf, int size)
3650 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3652 for(i=0;i<size;i+=16) {
3659 PRINT(" %02x", buf[i+j]);
3664 for(j=0;j<len;j++) {
3666 if (c < ' ' || c > '~')
3675 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3677 hex_dump_internal(NULL, f, 0, buf, size);
3680 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3682 hex_dump_internal(avcl, NULL, level, buf, size);
3685 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3687 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3688 PRINT("stream #%d:\n", pkt->stream_index);
3689 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3690 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3691 /* DTS is _always_ valid after av_read_frame() */
3693 if (pkt->dts == AV_NOPTS_VALUE)
3696 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3697 /* PTS may not be known if B-frames are present. */
3699 if (pkt->pts == AV_NOPTS_VALUE)
3702 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3704 PRINT(" size=%d\n", pkt->size);
3707 av_hex_dump(f, pkt->data, pkt->size);
3711 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3713 AVRational tb = { 1, AV_TIME_BASE };
3714 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3718 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3720 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3724 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3726 AVRational tb = { 1, AV_TIME_BASE };
3727 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3731 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3734 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3737 void av_url_split(char *proto, int proto_size,
3738 char *authorization, int authorization_size,
3739 char *hostname, int hostname_size,
3741 char *path, int path_size,
3744 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3746 if (port_ptr) *port_ptr = -1;
3747 if (proto_size > 0) proto[0] = 0;
3748 if (authorization_size > 0) authorization[0] = 0;
3749 if (hostname_size > 0) hostname[0] = 0;
3750 if (path_size > 0) path[0] = 0;
3752 /* parse protocol */
3753 if ((p = strchr(url, ':'))) {
3754 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3759 /* no protocol means plain filename */
3760 av_strlcpy(path, url, path_size);
3764 /* separate path from hostname */
3765 ls = strchr(p, '/');
3766 ls2 = strchr(p, '?');
3770 ls = FFMIN(ls, ls2);
3772 av_strlcpy(path, ls, path_size);
3774 ls = &p[strlen(p)]; // XXX
3776 /* the rest is hostname, use that to parse auth/port */
3778 /* authorization (user[:pass]@hostname) */
3780 while ((at = strchr(p, '@')) && at < ls) {
3781 av_strlcpy(authorization, at2,
3782 FFMIN(authorization_size, at + 1 - at2));
3783 p = at + 1; /* skip '@' */
3786 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3788 av_strlcpy(hostname, p + 1,
3789 FFMIN(hostname_size, brk - p));
3790 if (brk[1] == ':' && port_ptr)
3791 *port_ptr = atoi(brk + 2);
3792 } else if ((col = strchr(p, ':')) && col < ls) {
3793 av_strlcpy(hostname, p,
3794 FFMIN(col + 1 - p, hostname_size));
3795 if (port_ptr) *port_ptr = atoi(col + 1);
3797 av_strlcpy(hostname, p,
3798 FFMIN(ls + 1 - p, hostname_size));
3802 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3805 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3808 'C', 'D', 'E', 'F' };
3809 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3812 'c', 'd', 'e', 'f' };
3813 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3815 for(i = 0; i < s; i++) {
3816 buff[i * 2] = hex_table[src[i] >> 4];
3817 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3823 int ff_hex_to_data(uint8_t *data, const char *p)
3830 p += strspn(p, SPACE_CHARS);
3833 c = toupper((unsigned char) *p++);
3834 if (c >= '0' && c <= '9')
3836 else if (c >= 'A' && c <= 'F')
3851 #if FF_API_SET_PTS_INFO
3852 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3853 unsigned int pts_num, unsigned int pts_den)
3855 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3859 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3860 unsigned int pts_num, unsigned int pts_den)
3863 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3864 if(new_tb.num != pts_num)
3865 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3867 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3869 if(new_tb.num <= 0 || new_tb.den <= 0) {
3870 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);
3873 s->time_base = new_tb;
3874 av_codec_set_pkt_timebase(s->codec, new_tb);
3875 s->pts_wrap_bits = pts_wrap_bits;
3878 int ff_url_join(char *str, int size, const char *proto,
3879 const char *authorization, const char *hostname,
3880 int port, const char *fmt, ...)
3883 struct addrinfo hints = { 0 }, *ai;
3888 av_strlcatf(str, size, "%s://", proto);
3889 if (authorization && authorization[0])
3890 av_strlcatf(str, size, "%s@", authorization);
3891 #if CONFIG_NETWORK && defined(AF_INET6)
3892 /* Determine if hostname is a numerical IPv6 address,
3893 * properly escape it within [] in that case. */
3894 hints.ai_flags = AI_NUMERICHOST;
3895 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
3896 if (ai->ai_family == AF_INET6) {
3897 av_strlcat(str, "[", size);
3898 av_strlcat(str, hostname, size);
3899 av_strlcat(str, "]", size);
3901 av_strlcat(str, hostname, size);
3906 /* Not an IPv6 address, just output the plain string. */
3907 av_strlcat(str, hostname, size);
3910 av_strlcatf(str, size, ":%d", port);
3913 int len = strlen(str);
3916 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
3922 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
3923 AVFormatContext *src)
3928 local_pkt.stream_index = dst_stream;
3929 if (pkt->pts != AV_NOPTS_VALUE)
3930 local_pkt.pts = av_rescale_q(pkt->pts,
3931 src->streams[pkt->stream_index]->time_base,
3932 dst->streams[dst_stream]->time_base);
3933 if (pkt->dts != AV_NOPTS_VALUE)
3934 local_pkt.dts = av_rescale_q(pkt->dts,
3935 src->streams[pkt->stream_index]->time_base,
3936 dst->streams[dst_stream]->time_base);
3937 return av_write_frame(dst, &local_pkt);
3940 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3943 const char *ptr = str;
3945 /* Parse key=value pairs. */
3948 char *dest = NULL, *dest_end;
3949 int key_len, dest_len = 0;
3951 /* Skip whitespace and potential commas. */
3952 while (*ptr && (isspace(*ptr) || *ptr == ','))
3959 if (!(ptr = strchr(key, '=')))
3962 key_len = ptr - key;
3964 callback_get_buf(context, key, key_len, &dest, &dest_len);
3965 dest_end = dest + dest_len - 1;
3969 while (*ptr && *ptr != '\"') {
3973 if (dest && dest < dest_end)
3977 if (dest && dest < dest_end)
3985 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
3986 if (dest && dest < dest_end)
3994 int ff_find_stream_index(AVFormatContext *s, int id)
3997 for (i = 0; i < s->nb_streams; i++) {
3998 if (s->streams[i]->id == id)
4004 void ff_make_absolute_url(char *buf, int size, const char *base,
4007 char *sep, *path_query;
4008 /* Absolute path, relative to the current server */
4009 if (base && strstr(base, "://") && rel[0] == '/') {
4011 av_strlcpy(buf, base, size);
4012 sep = strstr(buf, "://");
4014 /* Take scheme from base url */
4015 if (rel[1] == '/') {
4018 /* Take scheme and host from base url */
4020 sep = strchr(sep, '/');
4025 av_strlcat(buf, rel, size);
4028 /* If rel actually is an absolute url, just copy it */
4029 if (!base || strstr(rel, "://") || rel[0] == '/') {
4030 av_strlcpy(buf, rel, size);
4034 av_strlcpy(buf, base, size);
4036 /* Strip off any query string from base */
4037 path_query = strchr(buf, '?');
4038 if (path_query != NULL)
4041 /* Is relative path just a new query part? */
4042 if (rel[0] == '?') {
4043 av_strlcat(buf, rel, size);
4047 /* Remove the file name from the base url */
4048 sep = strrchr(buf, '/');
4053 while (av_strstart(rel, "../", NULL) && sep) {
4054 /* Remove the path delimiter at the end */
4056 sep = strrchr(buf, '/');
4057 /* If the next directory name to pop off is "..", break here */
4058 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4059 /* Readd the slash we just removed */
4060 av_strlcat(buf, "/", size);
4063 /* Cut off the directory name */
4070 av_strlcat(buf, rel, size);
4073 int64_t ff_iso8601_to_unix_time(const char *datestr)
4075 struct tm time1 = {0}, time2 = {0};
4077 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4078 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4080 return av_timegm(&time2);
4082 return av_timegm(&time1);
4085 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4088 if (ofmt->query_codec)
4089 return ofmt->query_codec(codec_id, std_compliance);
4090 else if (ofmt->codec_tag)
4091 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4092 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4093 codec_id == ofmt->subtitle_codec)
4096 return AVERROR_PATCHWELCOME;
4099 int avformat_network_init(void)
4103 ff_network_inited_globally = 1;
4104 if ((ret = ff_network_init()) < 0)
4111 int avformat_network_deinit(void)
4120 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4121 uint64_t channel_layout, int32_t sample_rate,
4122 int32_t width, int32_t height)
4128 return AVERROR(EINVAL);
4131 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4133 if (channel_layout) {
4135 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4139 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4141 if (width || height) {
4143 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4145 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4147 return AVERROR(ENOMEM);
4148 bytestream_put_le32(&data, flags);
4150 bytestream_put_le32(&data, channels);
4152 bytestream_put_le64(&data, channel_layout);
4154 bytestream_put_le32(&data, sample_rate);
4155 if (width || height) {
4156 bytestream_put_le32(&data, width);
4157 bytestream_put_le32(&data, height);
4162 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4164 return ff_codec_bmp_tags;
4166 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4168 return ff_codec_wav_tags;
4171 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4173 AVRational undef = {0, 1};
4174 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4175 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4176 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4178 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4179 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4180 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4181 stream_sample_aspect_ratio = undef;
4183 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4184 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4185 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4186 frame_sample_aspect_ratio = undef;
4188 if (stream_sample_aspect_ratio.num)
4189 return stream_sample_aspect_ratio;
4191 return frame_sample_aspect_ratio;
4194 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4197 if (*spec <= '9' && *spec >= '0') /* opt:index */
4198 return strtol(spec, NULL, 0) == st->index;
4199 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4200 *spec == 't') { /* opt:[vasdt] */
4201 enum AVMediaType type;
4204 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4205 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4206 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4207 case 'd': type = AVMEDIA_TYPE_DATA; break;
4208 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4209 default: av_assert0(0);
4211 if (type != st->codec->codec_type)
4213 if (*spec++ == ':') { /* possibly followed by :index */
4214 int i, index = strtol(spec, NULL, 0);
4215 for (i = 0; i < s->nb_streams; i++)
4216 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4217 return i == st->index;
4221 } else if (*spec == 'p' && *(spec + 1) == ':') {
4225 prog_id = strtol(spec, &endptr, 0);
4226 for (i = 0; i < s->nb_programs; i++) {
4227 if (s->programs[i]->id != prog_id)
4230 if (*endptr++ == ':') {
4231 int stream_idx = strtol(endptr, NULL, 0);
4232 return stream_idx >= 0 &&
4233 stream_idx < s->programs[i]->nb_stream_indexes &&
4234 st->index == s->programs[i]->stream_index[stream_idx];
4237 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4238 if (st->index == s->programs[i]->stream_index[j])
4242 } else if (*spec == '#') {
4245 sid = strtol(spec + 1, &endptr, 0);
4247 return st->id == sid;
4248 } else if (!*spec) /* empty specifier, matches everything */
4251 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4252 return AVERROR(EINVAL);
4255 void ff_generate_avci_extradata(AVStream *st)
4257 static const uint8_t avci100_1080p_extradata[] = {
4259 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4260 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4261 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4262 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4263 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4264 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4265 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4266 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4267 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4269 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4272 static const uint8_t avci100_1080i_extradata[] = {
4274 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4275 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4276 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4277 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4278 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4279 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4280 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4281 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4282 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4283 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4284 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4286 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4289 static const uint8_t avci50_1080i_extradata[] = {
4291 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4292 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4293 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4294 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4295 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4296 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4297 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4298 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4299 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4300 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4301 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4303 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4306 static const uint8_t avci100_720p_extradata[] = {
4308 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4309 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4310 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4311 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4312 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4313 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4314 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4315 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4316 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4317 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4319 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4323 const uint8_t *data = 0;
4324 if (st->codec->width == 1920) {
4325 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4326 data = avci100_1080p_extradata;
4327 size = sizeof(avci100_1080p_extradata);
4329 data = avci100_1080i_extradata;
4330 size = sizeof(avci100_1080i_extradata);
4332 } else if (st->codec->width == 1440) {
4333 data = avci50_1080i_extradata;
4334 size = sizeof(avci50_1080i_extradata);
4335 } else if (st->codec->width == 1280) {
4336 data = avci100_720p_extradata;
4337 size = sizeof(avci100_720p_extradata);
4341 av_freep(&st->codec->extradata);
4342 st->codec->extradata_size = 0;
4343 st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
4344 if (!st->codec->extradata)
4346 memcpy(st->codec->extradata, data, size);
4347 st->codec->extradata_size = size;