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 av_log(logctx, AV_LOG_ERROR,
446 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
447 return AVERROR(EINVAL);
450 if (offset >= max_probe_size) {
451 return AVERROR(EINVAL);
454 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
455 if (!av_strcasecmp(mime_type, "audio/aacp")) {
456 *fmt = av_find_input_format("aac");
458 av_freep(&mime_type);
461 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
462 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
463 int score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
466 if (probe_size < offset) {
470 /* read probe data */
471 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
474 return AVERROR(ENOMEM);
477 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
478 /* fail if error was not end of file, otherwise, lower score */
479 if (ret != AVERROR_EOF) {
484 ret = 0; /* error was end of file, nothing read */
486 pd.buf_size = buf_offset += ret;
487 pd.buf = &buf[offset];
489 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
491 /* guess file format */
492 *fmt = av_probe_input_format2(&pd, 1, &score);
494 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
495 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
497 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
503 return AVERROR_INVALIDDATA;
506 /* rewind. reuse probe buffer to avoid seeking */
507 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
512 /* open input file and probe the format if necessary */
513 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
516 AVProbeData pd = {filename, NULL, 0};
517 int score = AVPROBE_SCORE_RETRY;
520 s->flags |= AVFMT_FLAG_CUSTOM_IO;
522 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
523 else if (s->iformat->flags & AVFMT_NOFILE)
524 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
525 "will be ignored with AVFMT_NOFILE format.\n");
529 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
530 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
533 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
534 &s->interrupt_callback, options)) < 0)
538 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
541 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
542 AVPacketList **plast_pktl){
543 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
548 (*plast_pktl)->next = pktl;
550 *packet_buffer = pktl;
552 /* add the packet in the buffered packet list */
558 void avformat_queue_attached_pictures(AVFormatContext *s)
561 for (i = 0; i < s->nb_streams; i++)
562 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
563 s->streams[i]->discard < AVDISCARD_ALL) {
564 AVPacket copy = s->streams[i]->attached_pic;
565 copy.destruct = NULL;
566 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
570 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
572 AVFormatContext *s = *ps;
574 AVDictionary *tmp = NULL;
575 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
577 if (!s && !(s = avformat_alloc_context()))
578 return AVERROR(ENOMEM);
580 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
581 return AVERROR(EINVAL);
587 av_dict_copy(&tmp, *options, 0);
589 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
592 if ((ret = init_input(s, filename, &tmp)) < 0)
594 avio_skip(s->pb, s->skip_initial_bytes);
596 /* check filename in case an image number is expected */
597 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
598 if (!av_filename_number_test(filename)) {
599 ret = AVERROR(EINVAL);
604 s->duration = s->start_time = AV_NOPTS_VALUE;
605 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
607 /* allocate private data */
608 if (s->iformat->priv_data_size > 0) {
609 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
610 ret = AVERROR(ENOMEM);
613 if (s->iformat->priv_class) {
614 *(const AVClass**)s->priv_data = s->iformat->priv_class;
615 av_opt_set_defaults(s->priv_data);
616 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
621 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
623 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
625 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
626 if ((ret = s->iformat->read_header(s)) < 0)
629 if (id3v2_extra_meta) {
630 if (!strcmp(s->iformat->name, "mp3")) {
631 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
634 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
636 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
638 avformat_queue_attached_pictures(s);
640 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
641 s->data_offset = avio_tell(s->pb);
643 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
646 av_dict_free(options);
653 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
655 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
657 avformat_free_context(s);
662 /*******************************************************/
664 static void force_codec_ids(AVFormatContext *s, AVStream *st)
666 switch(st->codec->codec_type){
667 case AVMEDIA_TYPE_VIDEO:
668 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
670 case AVMEDIA_TYPE_AUDIO:
671 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
673 case AVMEDIA_TYPE_SUBTITLE:
674 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
679 static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
681 if(st->request_probe>0){
682 AVProbeData *pd = &st->probe_data;
684 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
688 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
692 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
693 pd->buf_size += pkt->size;
694 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
697 st->probe_packets = 0;
699 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
704 end= s->raw_packet_buffer_remaining_size <= 0
705 || st->probe_packets<=0;
707 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
708 int score= set_codec_from_probe_data(s, st, pd);
709 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
713 st->request_probe= -1;
714 if(st->codec->codec_id != AV_CODEC_ID_NONE){
715 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
717 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
719 force_codec_ids(s, st);
724 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
730 AVPacketList *pktl = s->raw_packet_buffer;
734 st = s->streams[pkt->stream_index];
735 if(st->request_probe <= 0){
736 s->raw_packet_buffer = pktl->next;
737 s->raw_packet_buffer_remaining_size += pkt->size;
746 ret= s->iformat->read_packet(s, pkt);
748 if (!pktl || ret == AVERROR(EAGAIN))
750 for (i = 0; i < s->nb_streams; i++) {
752 if (st->probe_packets) {
753 probe_codec(s, st, NULL);
755 av_assert0(st->request_probe <= 0);
760 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
761 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
762 av_log(s, AV_LOG_WARNING,
763 "Dropped corrupted packet (stream = %d)\n",
769 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
770 av_packet_merge_side_data(pkt);
772 if(pkt->stream_index >= (unsigned)s->nb_streams){
773 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
777 st= s->streams[pkt->stream_index];
778 pkt->dts = wrap_timestamp(st, pkt->dts);
779 pkt->pts = wrap_timestamp(st, pkt->pts);
781 force_codec_ids(s, st);
783 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
784 if (s->use_wallclock_as_timestamps)
785 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
787 if(!pktl && st->request_probe <= 0)
790 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
791 s->raw_packet_buffer_remaining_size -= pkt->size;
793 probe_codec(s, st, pkt);
797 #if FF_API_READ_PACKET
798 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
800 return ff_read_packet(s, pkt);
805 /**********************************************************/
807 static int determinable_frame_size(AVCodecContext *avctx)
809 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
810 avctx->codec_id == AV_CODEC_ID_MP1 ||
811 avctx->codec_id == AV_CODEC_ID_MP2 ||
812 avctx->codec_id == AV_CODEC_ID_MP3/* ||
813 avctx->codec_id == AV_CODEC_ID_CELT*/)
819 * Get the number of samples of an audio frame. Return -1 on error.
821 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
825 /* give frame_size priority if demuxing */
826 if (!mux && enc->frame_size > 1)
827 return enc->frame_size;
829 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
832 /* fallback to using frame_size if muxing */
833 if (enc->frame_size > 1)
834 return enc->frame_size;
836 //For WMA we currently have no other means to calculate duration thus we
837 //do it here by assuming CBR, which is true for all known cases.
838 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
839 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
840 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
848 * Return the frame duration in seconds. Return 0 if not available.
850 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
851 AVCodecParserContext *pc, AVPacket *pkt)
857 switch(st->codec->codec_type) {
858 case AVMEDIA_TYPE_VIDEO:
859 if (st->r_frame_rate.num && !pc) {
860 *pnum = st->r_frame_rate.den;
861 *pden = st->r_frame_rate.num;
862 } else if(st->time_base.num*1000LL > st->time_base.den) {
863 *pnum = st->time_base.num;
864 *pden = st->time_base.den;
865 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
866 *pnum = st->codec->time_base.num;
867 *pden = st->codec->time_base.den;
868 if (pc && pc->repeat_pict) {
869 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
870 *pden /= 1 + pc->repeat_pict;
872 *pnum *= 1 + pc->repeat_pict;
874 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
875 //Thus if we have no parser in such case leave duration undefined.
876 if(st->codec->ticks_per_frame>1 && !pc){
881 case AVMEDIA_TYPE_AUDIO:
882 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
883 if (frame_size <= 0 || st->codec->sample_rate <= 0)
886 *pden = st->codec->sample_rate;
893 static int is_intra_only(AVCodecContext *enc){
894 const AVCodecDescriptor *desc;
896 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
899 desc = av_codec_get_codec_descriptor(enc);
901 desc = avcodec_descriptor_get(enc->codec_id);
902 av_codec_set_codec_descriptor(enc, desc);
905 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
909 static int has_decode_delay_been_guessed(AVStream *st)
911 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
912 if(!st->info) // if we have left find_stream_info then nb_decoded_frames wont increase anymore for stream copy
914 #if CONFIG_H264_DECODER
915 if(st->codec->has_b_frames &&
916 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
919 if(st->codec->has_b_frames<3)
920 return st->nb_decoded_frames >= 7;
921 else if(st->codec->has_b_frames<4)
922 return st->nb_decoded_frames >= 18;
924 return st->nb_decoded_frames >= 20;
927 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
931 if (pktl == s->parse_queue_end)
932 return s->packet_buffer;
936 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
938 if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
939 st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
942 // reference time stamp should be 60 s before first time stamp
943 int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
944 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
945 int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
946 (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
947 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
949 AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
951 if (!first_program) {
952 int default_stream_index = av_find_default_stream_index(s);
953 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
954 for (i=0; i<s->nb_streams; i++) {
955 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
956 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
960 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
961 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
965 AVProgram *program = first_program;
967 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
968 pts_wrap_reference = program->pts_wrap_reference;
969 pts_wrap_behavior = program->pts_wrap_behavior;
972 program = av_find_program_from_stream(s, program, stream_index);
975 // update every program with differing pts_wrap_reference
976 program = first_program;
978 if (program->pts_wrap_reference != pts_wrap_reference) {
979 for (i=0; i<program->nb_stream_indexes; i++) {
980 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
981 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
984 program->pts_wrap_reference = pts_wrap_reference;
985 program->pts_wrap_behavior = pts_wrap_behavior;
987 program = av_find_program_from_stream(s, program, stream_index);
995 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
996 int64_t dts, int64_t pts, AVPacket *pkt)
998 AVStream *st= s->streams[stream_index];
999 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1000 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1004 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
1007 delay = st->codec->has_b_frames;
1008 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
1010 shift = st->first_dts - RELATIVE_TS_BASE;
1012 for (i=0; i<MAX_REORDER_DELAY+1; i++)
1013 pts_buffer[i] = AV_NOPTS_VALUE;
1015 if (is_relative(pts))
1018 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1019 if(pktl->pkt.stream_index != stream_index)
1021 if(is_relative(pktl->pkt.pts))
1022 pktl->pkt.pts += shift;
1024 if(is_relative(pktl->pkt.dts))
1025 pktl->pkt.dts += shift;
1027 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
1028 st->start_time= pktl->pkt.pts;
1030 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1031 pts_buffer[0]= pktl->pkt.pts;
1032 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
1033 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
1034 if(pktl->pkt.dts == AV_NOPTS_VALUE)
1035 pktl->pkt.dts= pts_buffer[0];
1039 if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
1040 // correct first time stamps to negative values
1041 st->first_dts = wrap_timestamp(st, st->first_dts);
1042 st->cur_dts = wrap_timestamp(st, st->cur_dts);
1043 pkt->dts = wrap_timestamp(st, pkt->dts);
1044 pkt->pts = wrap_timestamp(st, pkt->pts);
1045 pts = wrap_timestamp(st, pts);
1048 if (st->start_time == AV_NOPTS_VALUE)
1049 st->start_time = pts;
1052 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1053 int stream_index, int duration)
1055 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1056 int64_t cur_dts= RELATIVE_TS_BASE;
1058 if(st->first_dts != AV_NOPTS_VALUE){
1059 cur_dts= st->first_dts;
1060 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1061 if(pktl->pkt.stream_index == stream_index){
1062 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1064 cur_dts -= duration;
1067 if(pktl && pktl->pkt.dts != st->first_dts) {
1068 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));
1072 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1075 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1076 st->first_dts = cur_dts;
1077 }else if(st->cur_dts != RELATIVE_TS_BASE)
1080 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1081 if(pktl->pkt.stream_index != stream_index)
1083 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1084 && !pktl->pkt.duration){
1085 pktl->pkt.dts= cur_dts;
1086 if(!st->codec->has_b_frames)
1087 pktl->pkt.pts= cur_dts;
1088 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1089 pktl->pkt.duration = duration;
1092 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1095 st->cur_dts= cur_dts;
1098 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1099 AVCodecParserContext *pc, AVPacket *pkt)
1101 int num, den, presentation_delayed, delay, i;
1104 if (s->flags & AVFMT_FLAG_NOFILLIN)
1107 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1108 pkt->dts= AV_NOPTS_VALUE;
1110 if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1111 //FIXME Set low_delay = 0 when has_b_frames = 1
1112 st->codec->has_b_frames = 1;
1114 /* do we have a video B-frame ? */
1115 delay= st->codec->has_b_frames;
1116 presentation_delayed = 0;
1118 /* XXX: need has_b_frame, but cannot get it if the codec is
1121 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1122 presentation_delayed = 1;
1124 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){
1125 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1126 pkt->dts -= 1LL<<st->pts_wrap_bits;
1128 pkt->pts += 1LL<<st->pts_wrap_bits;
1131 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1132 // we take the conservative approach and discard both
1133 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1134 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1135 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1136 if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1137 pkt->dts= AV_NOPTS_VALUE;
1140 if (pkt->duration == 0) {
1141 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1143 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1146 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1147 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1149 /* correct timestamps with byte offset if demuxers only have timestamps
1150 on packet boundaries */
1151 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1152 /* this will estimate bitrate based on this frame's duration and size */
1153 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1154 if(pkt->pts != AV_NOPTS_VALUE)
1156 if(pkt->dts != AV_NOPTS_VALUE)
1160 if (pc && pc->dts_sync_point >= 0) {
1161 // we have synchronization info from the parser
1162 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1164 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1165 if (pkt->dts != AV_NOPTS_VALUE) {
1166 // got DTS from the stream, update reference timestamp
1167 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1168 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1169 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1170 // compute DTS based on reference timestamp
1171 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1172 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1174 if (pc->dts_sync_point > 0)
1175 st->reference_dts = pkt->dts; // new reference
1179 /* This may be redundant, but it should not hurt. */
1180 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1181 presentation_delayed = 1;
1183 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1184 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1185 /* interpolate PTS and DTS if they are not present */
1186 //We skip H264 currently because delay and has_b_frames are not reliably set
1187 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1188 if (presentation_delayed) {
1189 /* DTS = decompression timestamp */
1190 /* PTS = presentation timestamp */
1191 if (pkt->dts == AV_NOPTS_VALUE)
1192 pkt->dts = st->last_IP_pts;
1193 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1194 if (pkt->dts == AV_NOPTS_VALUE)
1195 pkt->dts = st->cur_dts;
1197 /* this is tricky: the dts must be incremented by the duration
1198 of the frame we are displaying, i.e. the last I- or P-frame */
1199 if (st->last_IP_duration == 0)
1200 st->last_IP_duration = pkt->duration;
1201 if(pkt->dts != AV_NOPTS_VALUE)
1202 st->cur_dts = pkt->dts + st->last_IP_duration;
1203 st->last_IP_duration = pkt->duration;
1204 st->last_IP_pts= pkt->pts;
1205 /* cannot compute PTS if not present (we can compute it only
1206 by knowing the future */
1207 } else if (pkt->pts != AV_NOPTS_VALUE ||
1208 pkt->dts != AV_NOPTS_VALUE ||
1210 int duration = pkt->duration;
1212 /* presentation is not delayed : PTS and DTS are the same */
1213 if (pkt->pts == AV_NOPTS_VALUE)
1214 pkt->pts = pkt->dts;
1215 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1217 if (pkt->pts == AV_NOPTS_VALUE)
1218 pkt->pts = st->cur_dts;
1219 pkt->dts = pkt->pts;
1220 if (pkt->pts != AV_NOPTS_VALUE)
1221 st->cur_dts = pkt->pts + duration;
1225 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1226 st->pts_buffer[0]= pkt->pts;
1227 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1228 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1229 if(pkt->dts == AV_NOPTS_VALUE)
1230 pkt->dts= st->pts_buffer[0];
1232 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1233 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1235 if(pkt->dts > st->cur_dts)
1236 st->cur_dts = pkt->dts;
1238 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1239 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1242 if (is_intra_only(st->codec))
1243 pkt->flags |= AV_PKT_FLAG_KEY;
1245 pkt->convergence_duration = pc->convergence_duration;
1248 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1251 AVPacketList *pktl = *pkt_buf;
1252 *pkt_buf = pktl->next;
1253 av_free_packet(&pktl->pkt);
1256 *pkt_buf_end = NULL;
1260 * Parse a packet, add all split parts to parse_queue
1262 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1264 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1266 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1267 AVStream *st = s->streams[stream_index];
1268 uint8_t *data = pkt ? pkt->data : NULL;
1269 int size = pkt ? pkt->size : 0;
1270 int ret = 0, got_output = 0;
1273 av_init_packet(&flush_pkt);
1276 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1277 // preserve 0-size sync packets
1278 compute_pkt_fields(s, st, st->parser, pkt);
1281 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1284 av_init_packet(&out_pkt);
1285 len = av_parser_parse2(st->parser, st->codec,
1286 &out_pkt.data, &out_pkt.size, data, size,
1287 pkt->pts, pkt->dts, pkt->pos);
1289 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1291 /* increment read pointer */
1295 got_output = !!out_pkt.size;
1300 /* set the duration */
1301 out_pkt.duration = 0;
1302 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1303 if (st->codec->sample_rate > 0) {
1304 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1305 (AVRational){ 1, st->codec->sample_rate },
1309 } else if (st->codec->time_base.num != 0 &&
1310 st->codec->time_base.den != 0) {
1311 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1312 st->codec->time_base,
1317 out_pkt.stream_index = st->index;
1318 out_pkt.pts = st->parser->pts;
1319 out_pkt.dts = st->parser->dts;
1320 out_pkt.pos = st->parser->pos;
1322 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1323 out_pkt.pos = st->parser->frame_offset;
1325 if (st->parser->key_frame == 1 ||
1326 (st->parser->key_frame == -1 &&
1327 st->parser->pict_type == AV_PICTURE_TYPE_I))
1328 out_pkt.flags |= AV_PKT_FLAG_KEY;
1330 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1331 out_pkt.flags |= AV_PKT_FLAG_KEY;
1333 compute_pkt_fields(s, st, st->parser, &out_pkt);
1335 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1336 out_pkt.destruct = pkt->destruct;
1337 pkt->destruct = NULL;
1339 if ((ret = av_dup_packet(&out_pkt)) < 0)
1342 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1343 av_free_packet(&out_pkt);
1344 ret = AVERROR(ENOMEM);
1350 /* end of the stream => close and free the parser */
1351 if (pkt == &flush_pkt) {
1352 av_parser_close(st->parser);
1357 av_free_packet(pkt);
1361 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1362 AVPacketList **pkt_buffer_end,
1366 av_assert0(*pkt_buffer);
1369 *pkt_buffer = pktl->next;
1371 *pkt_buffer_end = NULL;
1376 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1378 int ret = 0, i, got_packet = 0;
1380 av_init_packet(pkt);
1382 while (!got_packet && !s->parse_queue) {
1386 /* read next packet */
1387 ret = ff_read_packet(s, &cur_pkt);
1389 if (ret == AVERROR(EAGAIN))
1391 /* flush the parsers */
1392 for(i = 0; i < s->nb_streams; i++) {
1394 if (st->parser && st->need_parsing)
1395 parse_packet(s, NULL, st->index);
1397 /* all remaining packets are now in parse_queue =>
1398 * really terminate parsing */
1402 st = s->streams[cur_pkt.stream_index];
1404 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1405 cur_pkt.dts != AV_NOPTS_VALUE &&
1406 cur_pkt.pts < cur_pkt.dts) {
1407 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1408 cur_pkt.stream_index,
1409 av_ts2str(cur_pkt.pts),
1410 av_ts2str(cur_pkt.dts),
1413 if (s->debug & FF_FDEBUG_TS)
1414 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1415 cur_pkt.stream_index,
1416 av_ts2str(cur_pkt.pts),
1417 av_ts2str(cur_pkt.dts),
1422 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1423 st->parser = av_parser_init(st->codec->codec_id);
1425 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1426 "%s, packets or times may be invalid.\n",
1427 avcodec_get_name(st->codec->codec_id));
1428 /* no parser available: just output the raw packets */
1429 st->need_parsing = AVSTREAM_PARSE_NONE;
1430 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1431 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1432 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1433 st->parser->flags |= PARSER_FLAG_ONCE;
1434 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1435 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1439 if (!st->need_parsing || !st->parser) {
1440 /* no parsing needed: we just output the packet as is */
1442 compute_pkt_fields(s, st, NULL, pkt);
1443 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1444 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1445 ff_reduce_index(s, st->index);
1446 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1449 } else if (st->discard < AVDISCARD_ALL) {
1450 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1454 av_free_packet(&cur_pkt);
1456 if (pkt->flags & AV_PKT_FLAG_KEY)
1457 st->skip_to_keyframe = 0;
1458 if (st->skip_to_keyframe) {
1459 av_free_packet(&cur_pkt);
1464 if (!got_packet && s->parse_queue)
1465 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1467 if(s->debug & FF_FDEBUG_TS)
1468 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1470 av_ts2str(pkt->pts),
1471 av_ts2str(pkt->dts),
1479 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1481 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1487 ret = s->packet_buffer ?
1488 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1489 read_frame_internal(s, pkt);
1496 AVPacketList *pktl = s->packet_buffer;
1499 AVPacket *next_pkt = &pktl->pkt;
1501 if (next_pkt->dts != AV_NOPTS_VALUE) {
1502 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1503 // last dts seen for this stream. if any of packets following
1504 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1505 int64_t last_dts = next_pkt->dts;
1506 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1507 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1508 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1509 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1510 next_pkt->pts = pktl->pkt.dts;
1512 if (last_dts != AV_NOPTS_VALUE) {
1513 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1514 last_dts = pktl->pkt.dts;
1519 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1520 // Fixing the last reference frame had none pts issue (For MXF etc).
1521 // We only do this when
1523 // 2. we are not able to resolve a pts value for current packet.
1524 // 3. the packets for this stream at the end of the files had valid dts.
1525 next_pkt->pts = last_dts + next_pkt->duration;
1527 pktl = s->packet_buffer;
1530 /* read packet from packet buffer, if there is data */
1531 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1532 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1533 ret = read_from_packet_buffer(&s->packet_buffer,
1534 &s->packet_buffer_end, pkt);
1539 ret = read_frame_internal(s, pkt);
1541 if (pktl && ret != AVERROR(EAGAIN)) {
1548 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1549 &s->packet_buffer_end)) < 0)
1550 return AVERROR(ENOMEM);
1555 st = s->streams[pkt->stream_index];
1556 if (st->skip_samples) {
1557 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1558 AV_WL32(p, st->skip_samples);
1559 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1560 st->skip_samples = 0;
1563 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1564 ff_reduce_index(s, st->index);
1565 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1568 if (is_relative(pkt->dts))
1569 pkt->dts -= RELATIVE_TS_BASE;
1570 if (is_relative(pkt->pts))
1571 pkt->pts -= RELATIVE_TS_BASE;
1576 /* XXX: suppress the packet queue */
1577 static void flush_packet_queue(AVFormatContext *s)
1579 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1580 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1581 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1583 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1586 /*******************************************************/
1589 int av_find_default_stream_index(AVFormatContext *s)
1591 int first_audio_index = -1;
1595 if (s->nb_streams <= 0)
1597 for(i = 0; i < s->nb_streams; i++) {
1599 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1600 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1603 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1604 first_audio_index = i;
1606 return first_audio_index >= 0 ? first_audio_index : 0;
1610 * Flush the frame reader.
1612 void ff_read_frame_flush(AVFormatContext *s)
1617 flush_packet_queue(s);
1619 /* for each stream, reset read state */
1620 for(i = 0; i < s->nb_streams; i++) {
1624 av_parser_close(st->parser);
1627 st->last_IP_pts = AV_NOPTS_VALUE;
1628 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1629 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1630 st->reference_dts = AV_NOPTS_VALUE;
1632 st->probe_packets = MAX_PROBE_PACKETS;
1634 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1635 st->pts_buffer[j]= AV_NOPTS_VALUE;
1639 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1643 for(i = 0; i < s->nb_streams; i++) {
1644 AVStream *st = s->streams[i];
1646 st->cur_dts = av_rescale(timestamp,
1647 st->time_base.den * (int64_t)ref_st->time_base.num,
1648 st->time_base.num * (int64_t)ref_st->time_base.den);
1652 void ff_reduce_index(AVFormatContext *s, int stream_index)
1654 AVStream *st= s->streams[stream_index];
1655 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1657 if((unsigned)st->nb_index_entries >= max_entries){
1659 for(i=0; 2*i<st->nb_index_entries; i++)
1660 st->index_entries[i]= st->index_entries[2*i];
1661 st->nb_index_entries= i;
1665 int ff_add_index_entry(AVIndexEntry **index_entries,
1666 int *nb_index_entries,
1667 unsigned int *index_entries_allocated_size,
1668 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1670 AVIndexEntry *entries, *ie;
1673 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1676 if(timestamp == AV_NOPTS_VALUE)
1677 return AVERROR(EINVAL);
1679 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1680 timestamp -= RELATIVE_TS_BASE;
1682 entries = av_fast_realloc(*index_entries,
1683 index_entries_allocated_size,
1684 (*nb_index_entries + 1) *
1685 sizeof(AVIndexEntry));
1689 *index_entries= entries;
1691 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1694 index= (*nb_index_entries)++;
1695 ie= &entries[index];
1696 assert(index==0 || ie[-1].timestamp < timestamp);
1698 ie= &entries[index];
1699 if(ie->timestamp != timestamp){
1700 if(ie->timestamp <= timestamp)
1702 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1703 (*nb_index_entries)++;
1704 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1705 distance= ie->min_distance;
1709 ie->timestamp = timestamp;
1710 ie->min_distance= distance;
1717 int av_add_index_entry(AVStream *st,
1718 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1720 timestamp = wrap_timestamp(st, timestamp);
1721 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1722 &st->index_entries_allocated_size, pos,
1723 timestamp, size, distance, flags);
1726 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1727 int64_t wanted_timestamp, int flags)
1735 //optimize appending index entries at the end
1736 if(b && entries[b-1].timestamp < wanted_timestamp)
1741 timestamp = entries[m].timestamp;
1742 if(timestamp >= wanted_timestamp)
1744 if(timestamp <= wanted_timestamp)
1747 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1749 if(!(flags & AVSEEK_FLAG_ANY)){
1750 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1751 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1760 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1763 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1764 wanted_timestamp, flags);
1767 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1768 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1770 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1771 if (stream_index >= 0)
1772 ts = wrap_timestamp(s->streams[stream_index], ts);
1776 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1778 AVInputFormat *avif= s->iformat;
1779 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1780 int64_t ts_min, ts_max, ts;
1785 if (stream_index < 0)
1788 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1791 ts_min= AV_NOPTS_VALUE;
1792 pos_limit= -1; //gcc falsely says it may be uninitialized
1794 st= s->streams[stream_index];
1795 if(st->index_entries){
1798 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()
1799 index= FFMAX(index, 0);
1800 e= &st->index_entries[index];
1802 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1804 ts_min= e->timestamp;
1805 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1806 pos_min, av_ts2str(ts_min));
1811 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1812 assert(index < st->nb_index_entries);
1814 e= &st->index_entries[index];
1815 assert(e->timestamp >= target_ts);
1817 ts_max= e->timestamp;
1818 pos_limit= pos_max - e->min_distance;
1819 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1820 pos_max, pos_limit, av_ts2str(ts_max));
1824 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1829 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1832 ff_read_frame_flush(s);
1833 ff_update_cur_dts(s, st, ts);
1838 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1839 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1840 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1841 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1844 int64_t start_pos, filesize;
1847 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1849 if(ts_min == AV_NOPTS_VALUE){
1850 pos_min = s->data_offset;
1851 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1852 if (ts_min == AV_NOPTS_VALUE)
1856 if(ts_min >= target_ts){
1861 if(ts_max == AV_NOPTS_VALUE){
1863 filesize = avio_size(s->pb);
1864 pos_max = filesize - 1;
1866 pos_max = FFMAX(0, pos_max - step);
1867 ts_max = ff_read_timestamp(s, stream_index, &pos_max, pos_max + step, read_timestamp);
1869 }while(ts_max == AV_NOPTS_VALUE && pos_max > 0);
1870 if (ts_max == AV_NOPTS_VALUE)
1874 int64_t tmp_pos= pos_max + 1;
1875 int64_t tmp_ts= ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1876 if(tmp_ts == AV_NOPTS_VALUE)
1880 if(tmp_pos >= filesize)
1886 if(ts_max <= target_ts){
1891 if(ts_min > ts_max){
1893 }else if(ts_min == ts_max){
1898 while (pos_min < pos_limit) {
1899 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1900 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1901 assert(pos_limit <= pos_max);
1904 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1905 // interpolate position (better than dichotomy)
1906 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1907 + pos_min - approximate_keyframe_distance;
1908 }else if(no_change==1){
1909 // bisection, if interpolation failed to change min or max pos last time
1910 pos = (pos_min + pos_limit)>>1;
1912 /* linear search if bisection failed, can only happen if there
1913 are very few or no keyframes between min/max */
1918 else if(pos > pos_limit)
1922 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1927 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1928 pos_min, pos, pos_max,
1929 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1930 pos_limit, start_pos, no_change);
1931 if(ts == AV_NOPTS_VALUE){
1932 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1935 assert(ts != AV_NOPTS_VALUE);
1936 if (target_ts <= ts) {
1937 pos_limit = start_pos - 1;
1941 if (target_ts >= ts) {
1947 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1948 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1951 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1953 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1954 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1955 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1961 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1962 int64_t pos_min, pos_max;
1964 pos_min = s->data_offset;
1965 pos_max = avio_size(s->pb) - 1;
1967 if (pos < pos_min) pos= pos_min;
1968 else if(pos > pos_max) pos= pos_max;
1970 avio_seek(s->pb, pos, SEEK_SET);
1975 static int seek_frame_generic(AVFormatContext *s,
1976 int stream_index, int64_t timestamp, int flags)
1983 st = s->streams[stream_index];
1985 index = av_index_search_timestamp(st, timestamp, flags);
1987 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1990 if(index < 0 || index==st->nb_index_entries-1){
1994 if(st->nb_index_entries){
1995 assert(st->index_entries);
1996 ie= &st->index_entries[st->nb_index_entries-1];
1997 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1999 ff_update_cur_dts(s, st, ie->timestamp);
2001 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
2007 read_status = av_read_frame(s, &pkt);
2008 } while (read_status == AVERROR(EAGAIN));
2009 if (read_status < 0)
2011 av_free_packet(&pkt);
2012 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
2013 if(pkt.flags & AV_PKT_FLAG_KEY)
2015 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
2016 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);
2021 index = av_index_search_timestamp(st, timestamp, flags);
2026 ff_read_frame_flush(s);
2027 if (s->iformat->read_seek){
2028 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2031 ie = &st->index_entries[index];
2032 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2034 ff_update_cur_dts(s, st, ie->timestamp);
2039 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2040 int64_t timestamp, int flags)
2045 if (flags & AVSEEK_FLAG_BYTE) {
2046 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2048 ff_read_frame_flush(s);
2049 return seek_frame_byte(s, stream_index, timestamp, flags);
2052 if(stream_index < 0){
2053 stream_index= av_find_default_stream_index(s);
2054 if(stream_index < 0)
2057 st= s->streams[stream_index];
2058 /* timestamp for default must be expressed in AV_TIME_BASE units */
2059 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2062 /* first, we try the format specific seek */
2063 if (s->iformat->read_seek) {
2064 ff_read_frame_flush(s);
2065 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2072 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2073 ff_read_frame_flush(s);
2074 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2075 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2076 ff_read_frame_flush(s);
2077 return seek_frame_generic(s, stream_index, timestamp, flags);
2083 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2085 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
2088 avformat_queue_attached_pictures(s);
2093 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2095 if(min_ts > ts || max_ts < ts)
2099 flags |= AVSEEK_FLAG_ANY;
2101 if (s->iformat->read_seek2) {
2103 ff_read_frame_flush(s);
2105 if (stream_index == -1 && s->nb_streams == 1) {
2106 AVRational time_base = s->streams[0]->time_base;
2107 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2108 min_ts = av_rescale_rnd(min_ts, time_base.den,
2109 time_base.num * (int64_t)AV_TIME_BASE,
2110 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2111 max_ts = av_rescale_rnd(max_ts, time_base.den,
2112 time_base.num * (int64_t)AV_TIME_BASE,
2113 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2116 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2119 avformat_queue_attached_pictures(s);
2123 if(s->iformat->read_timestamp){
2124 //try to seek via read_timestamp()
2127 //Fallback to old API if new is not implemented but old is
2128 //Note the old has somewhat different semantics
2129 if (s->iformat->read_seek || 1) {
2130 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2131 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2132 if (ret<0 && ts != min_ts && max_ts != ts) {
2133 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2135 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2140 // try some generic seek like seek_frame_generic() but with new ts semantics
2141 return -1; //unreachable
2144 /*******************************************************/
2147 * Return TRUE if the stream has accurate duration in any stream.
2149 * @return TRUE if the stream has accurate duration for at least one component.
2151 static int has_duration(AVFormatContext *ic)
2156 for(i = 0;i < ic->nb_streams; i++) {
2157 st = ic->streams[i];
2158 if (st->duration != AV_NOPTS_VALUE)
2161 if (ic->duration != AV_NOPTS_VALUE)
2167 * Estimate the stream timings from the one of each components.
2169 * Also computes the global bitrate if possible.
2171 static void update_stream_timings(AVFormatContext *ic)
2173 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2174 int64_t duration, duration1, filesize;
2179 start_time = INT64_MAX;
2180 start_time_text = INT64_MAX;
2181 end_time = INT64_MIN;
2182 duration = INT64_MIN;
2183 for(i = 0;i < ic->nb_streams; i++) {
2184 st = ic->streams[i];
2185 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2186 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2187 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2188 if (start_time1 < start_time_text)
2189 start_time_text = start_time1;
2191 start_time = FFMIN(start_time, start_time1);
2192 end_time1 = AV_NOPTS_VALUE;
2193 if (st->duration != AV_NOPTS_VALUE) {
2194 end_time1 = start_time1
2195 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2196 end_time = FFMAX(end_time, end_time1);
2198 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2199 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2200 p->start_time = start_time1;
2201 if(p->end_time < end_time1)
2202 p->end_time = end_time1;
2205 if (st->duration != AV_NOPTS_VALUE) {
2206 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2207 duration = FFMAX(duration, duration1);
2210 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2211 start_time = start_time_text;
2212 else if(start_time > start_time_text)
2213 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2215 if (start_time != INT64_MAX) {
2216 ic->start_time = start_time;
2217 if (end_time != INT64_MIN) {
2218 if (ic->nb_programs) {
2219 for (i=0; i<ic->nb_programs; i++) {
2220 p = ic->programs[i];
2221 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2222 duration = FFMAX(duration, p->end_time - p->start_time);
2225 duration = FFMAX(duration, end_time - start_time);
2228 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2229 ic->duration = duration;
2231 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2232 /* compute the bitrate */
2233 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2234 (double)ic->duration;
2238 static void fill_all_stream_timings(AVFormatContext *ic)
2243 update_stream_timings(ic);
2244 for(i = 0;i < ic->nb_streams; i++) {
2245 st = ic->streams[i];
2246 if (st->start_time == AV_NOPTS_VALUE) {
2247 if(ic->start_time != AV_NOPTS_VALUE)
2248 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2249 if(ic->duration != AV_NOPTS_VALUE)
2250 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2255 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2257 int64_t filesize, duration;
2261 /* if bit_rate is already set, we believe it */
2262 if (ic->bit_rate <= 0) {
2264 for(i=0;i<ic->nb_streams;i++) {
2265 st = ic->streams[i];
2266 if (st->codec->bit_rate > 0)
2267 bit_rate += st->codec->bit_rate;
2269 ic->bit_rate = bit_rate;
2272 /* if duration is already set, we believe it */
2273 if (ic->duration == AV_NOPTS_VALUE &&
2274 ic->bit_rate != 0) {
2275 filesize = ic->pb ? avio_size(ic->pb) : 0;
2277 for(i = 0; i < ic->nb_streams; i++) {
2278 st = ic->streams[i];
2279 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2280 if (st->duration == AV_NOPTS_VALUE)
2281 st->duration = duration;
2287 #define DURATION_MAX_READ_SIZE 250000LL
2288 #define DURATION_MAX_RETRY 4
2290 /* only usable for MPEG-PS streams */
2291 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2293 AVPacket pkt1, *pkt = &pkt1;
2295 int read_size, i, ret;
2297 int64_t filesize, offset, duration;
2300 /* flush packet queue */
2301 flush_packet_queue(ic);
2303 for (i=0; i<ic->nb_streams; i++) {
2304 st = ic->streams[i];
2305 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2306 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2309 av_parser_close(st->parser);
2314 /* estimate the end time (duration) */
2315 /* XXX: may need to support wrapping */
2316 filesize = ic->pb ? avio_size(ic->pb) : 0;
2317 end_time = AV_NOPTS_VALUE;
2319 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2323 avio_seek(ic->pb, offset, SEEK_SET);
2326 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2330 ret = ff_read_packet(ic, pkt);
2331 } while(ret == AVERROR(EAGAIN));
2334 read_size += pkt->size;
2335 st = ic->streams[pkt->stream_index];
2336 if (pkt->pts != AV_NOPTS_VALUE &&
2337 (st->start_time != AV_NOPTS_VALUE ||
2338 st->first_dts != AV_NOPTS_VALUE)) {
2339 duration = end_time = pkt->pts;
2340 if (st->start_time != AV_NOPTS_VALUE)
2341 duration -= st->start_time;
2343 duration -= st->first_dts;
2345 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2346 st->duration = duration;
2349 av_free_packet(pkt);
2351 }while( end_time==AV_NOPTS_VALUE
2352 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2353 && ++retry <= DURATION_MAX_RETRY);
2355 fill_all_stream_timings(ic);
2357 avio_seek(ic->pb, old_offset, SEEK_SET);
2358 for (i=0; i<ic->nb_streams; i++) {
2360 st->cur_dts= st->first_dts;
2361 st->last_IP_pts = AV_NOPTS_VALUE;
2362 st->reference_dts = AV_NOPTS_VALUE;
2366 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2370 /* get the file size, if possible */
2371 if (ic->iformat->flags & AVFMT_NOFILE) {
2374 file_size = avio_size(ic->pb);
2375 file_size = FFMAX(0, file_size);
2378 if ((!strcmp(ic->iformat->name, "mpeg") ||
2379 !strcmp(ic->iformat->name, "mpegts")) &&
2380 file_size && ic->pb->seekable) {
2381 /* get accurate estimate from the PTSes */
2382 estimate_timings_from_pts(ic, old_offset);
2383 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2384 } else if (has_duration(ic)) {
2385 /* at least one component has timings - we use them for all
2387 fill_all_stream_timings(ic);
2388 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2390 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2391 /* less precise: use bitrate info */
2392 estimate_timings_from_bit_rate(ic);
2393 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2395 update_stream_timings(ic);
2399 AVStream av_unused *st;
2400 for(i = 0;i < ic->nb_streams; i++) {
2401 st = ic->streams[i];
2402 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2403 (double) st->start_time / AV_TIME_BASE,
2404 (double) st->duration / AV_TIME_BASE);
2406 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2407 (double) ic->start_time / AV_TIME_BASE,
2408 (double) ic->duration / AV_TIME_BASE,
2409 ic->bit_rate / 1000);
2413 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2415 AVCodecContext *avctx = st->codec;
2417 #define FAIL(errmsg) do { \
2419 *errmsg_ptr = errmsg; \
2423 switch (avctx->codec_type) {
2424 case AVMEDIA_TYPE_AUDIO:
2425 if (!avctx->frame_size && determinable_frame_size(avctx))
2426 FAIL("unspecified frame size");
2427 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2428 FAIL("unspecified sample format");
2429 if (!avctx->sample_rate)
2430 FAIL("unspecified sample rate");
2431 if (!avctx->channels)
2432 FAIL("unspecified number of channels");
2433 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2434 FAIL("no decodable DTS frames");
2436 case AVMEDIA_TYPE_VIDEO:
2438 FAIL("unspecified size");
2439 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2440 FAIL("unspecified pixel format");
2442 case AVMEDIA_TYPE_SUBTITLE:
2443 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2444 FAIL("unspecified size");
2446 case AVMEDIA_TYPE_DATA:
2447 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2450 if (avctx->codec_id == AV_CODEC_ID_NONE)
2451 FAIL("unknown codec");
2455 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2456 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2458 const AVCodec *codec;
2459 int got_picture = 1, ret = 0;
2460 AVFrame *frame = avcodec_alloc_frame();
2461 AVSubtitle subtitle;
2462 AVPacket pkt = *avpkt;
2465 return AVERROR(ENOMEM);
2467 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2468 AVDictionary *thread_opt = NULL;
2470 codec = st->codec->codec ? st->codec->codec :
2471 avcodec_find_decoder(st->codec->codec_id);
2474 st->info->found_decoder = -1;
2479 /* force thread count to 1 since the h264 decoder will not extract SPS
2480 * and PPS to extradata during multi-threaded decoding */
2481 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2482 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2484 av_dict_free(&thread_opt);
2486 st->info->found_decoder = -1;
2489 st->info->found_decoder = 1;
2490 } else if (!st->info->found_decoder)
2491 st->info->found_decoder = 1;
2493 if (st->info->found_decoder < 0) {
2498 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2500 (!has_codec_parameters(st, NULL) ||
2501 !has_decode_delay_been_guessed(st) ||
2502 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2504 avcodec_get_frame_defaults(frame);
2505 switch(st->codec->codec_type) {
2506 case AVMEDIA_TYPE_VIDEO:
2507 ret = avcodec_decode_video2(st->codec, frame,
2508 &got_picture, &pkt);
2510 case AVMEDIA_TYPE_AUDIO:
2511 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2513 case AVMEDIA_TYPE_SUBTITLE:
2514 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2515 &got_picture, &pkt);
2523 st->nb_decoded_frames++;
2530 if(!pkt.data && !got_picture)
2534 avcodec_free_frame(&frame);
2538 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2540 while (tags->id != AV_CODEC_ID_NONE) {
2548 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2551 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2552 if(tag == tags[i].tag)
2555 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2556 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2559 return AV_CODEC_ID_NONE;
2562 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2566 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2567 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2568 default: return AV_CODEC_ID_NONE;
2573 if (sflags & (1 << (bps - 1))) {
2575 case 1: return AV_CODEC_ID_PCM_S8;
2576 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2577 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2578 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2579 default: return AV_CODEC_ID_NONE;
2583 case 1: return AV_CODEC_ID_PCM_U8;
2584 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2585 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2586 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2587 default: return AV_CODEC_ID_NONE;
2593 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2596 if (!av_codec_get_tag2(tags, id, &tag))
2601 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2605 for(i=0; tags && tags[i]; i++){
2606 const AVCodecTag *codec_tags = tags[i];
2607 while (codec_tags->id != AV_CODEC_ID_NONE) {
2608 if (codec_tags->id == id) {
2609 *tag = codec_tags->tag;
2618 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2621 for(i=0; tags && tags[i]; i++){
2622 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2623 if(id!=AV_CODEC_ID_NONE) return id;
2625 return AV_CODEC_ID_NONE;
2628 static void compute_chapters_end(AVFormatContext *s)
2631 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2633 for (i = 0; i < s->nb_chapters; i++)
2634 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2635 AVChapter *ch = s->chapters[i];
2636 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2639 for (j = 0; j < s->nb_chapters; j++) {
2640 AVChapter *ch1 = s->chapters[j];
2641 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2642 if (j != i && next_start > ch->start && next_start < end)
2645 ch->end = (end == INT64_MAX) ? ch->start : end;
2649 static int get_std_framerate(int i){
2650 if(i<60*12) return (i+1)*1001;
2651 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2655 * Is the time base unreliable.
2656 * This is a heuristic to balance between quick acceptance of the values in
2657 * the headers vs. some extra checks.
2658 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2659 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2660 * And there are "variable" fps files this needs to detect as well.
2662 static int tb_unreliable(AVCodecContext *c){
2663 if( c->time_base.den >= 101L*c->time_base.num
2664 || c->time_base.den < 5L*c->time_base.num
2665 /* || c->codec_tag == AV_RL32("DIVX")
2666 || c->codec_tag == AV_RL32("XVID")*/
2667 || c->codec_tag == AV_RL32("mp4v")
2668 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2669 || c->codec_id == AV_CODEC_ID_H264
2675 #if FF_API_FORMAT_PARAMETERS
2676 int av_find_stream_info(AVFormatContext *ic)
2678 return avformat_find_stream_info(ic, NULL);
2682 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2684 int i, count, ret, read_size, j;
2686 AVPacket pkt1, *pkt;
2687 int64_t old_offset = avio_tell(ic->pb);
2688 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2689 int flush_codecs = ic->probesize > 0;
2692 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2694 for(i=0;i<ic->nb_streams;i++) {
2695 const AVCodec *codec;
2696 AVDictionary *thread_opt = NULL;
2697 st = ic->streams[i];
2699 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2700 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2701 /* if(!st->time_base.num)
2703 if(!st->codec->time_base.num)
2704 st->codec->time_base= st->time_base;
2706 //only for the split stuff
2707 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2708 st->parser = av_parser_init(st->codec->codec_id);
2710 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2711 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2712 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2713 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2715 } else if (st->need_parsing) {
2716 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2717 "%s, packets or times may be invalid.\n",
2718 avcodec_get_name(st->codec->codec_id));
2721 codec = st->codec->codec ? st->codec->codec :
2722 avcodec_find_decoder(st->codec->codec_id);
2724 /* force thread count to 1 since the h264 decoder will not extract SPS
2725 * and PPS to extradata during multi-threaded decoding */
2726 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2728 /* Ensure that subtitle_header is properly set. */
2729 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2730 && codec && !st->codec->codec)
2731 avcodec_open2(st->codec, codec, options ? &options[i]
2734 //try to just open decoders, in case this is enough to get parameters
2735 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2736 if (codec && !st->codec->codec)
2737 avcodec_open2(st->codec, codec, options ? &options[i]
2741 av_dict_free(&thread_opt);
2744 for (i=0; i<ic->nb_streams; i++) {
2745 #if FF_API_R_FRAME_RATE
2746 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2748 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2749 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2755 if (ff_check_interrupt(&ic->interrupt_callback)){
2757 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2761 /* check if one codec still needs to be handled */
2762 for(i=0;i<ic->nb_streams;i++) {
2763 int fps_analyze_framecount = 20;
2765 st = ic->streams[i];
2766 if (!has_codec_parameters(st, NULL))
2768 /* if the timebase is coarse (like the usual millisecond precision
2769 of mkv), we need to analyze more frames to reliably arrive at
2771 if (av_q2d(st->time_base) > 0.0005)
2772 fps_analyze_framecount *= 2;
2773 if (ic->fps_probe_size >= 0)
2774 fps_analyze_framecount = ic->fps_probe_size;
2775 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2776 fps_analyze_framecount = 0;
2777 /* variable fps and no guess at the real fps */
2778 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2779 && st->info->duration_count < fps_analyze_framecount
2780 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2782 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2784 if (st->first_dts == AV_NOPTS_VALUE &&
2785 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2786 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2789 if (i == ic->nb_streams) {
2790 /* NOTE: if the format has no header, then we need to read
2791 some packets to get most of the streams, so we cannot
2793 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2794 /* if we found the info for all the codecs, we can stop */
2796 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2801 /* we did not get all the codec info, but we read too much data */
2802 if (read_size >= ic->probesize) {
2804 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2805 for (i = 0; i < ic->nb_streams; i++)
2806 if (!ic->streams[i]->r_frame_rate.num &&
2807 ic->streams[i]->info->duration_count <= 1)
2808 av_log(ic, AV_LOG_WARNING,
2809 "Stream #%d: not enough frames to estimate rate; "
2810 "consider increasing probesize\n", i);
2814 /* NOTE: a new stream can be added there if no header in file
2815 (AVFMTCTX_NOHEADER) */
2816 ret = read_frame_internal(ic, &pkt1);
2817 if (ret == AVERROR(EAGAIN))
2825 if (ic->flags & AVFMT_FLAG_NOBUFFER) {
2828 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2829 &ic->packet_buffer_end);
2830 if ((ret = av_dup_packet(pkt)) < 0)
2831 goto find_stream_info_err;
2834 read_size += pkt->size;
2836 st = ic->streams[pkt->stream_index];
2837 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2838 /* check for non-increasing dts */
2839 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2840 st->info->fps_last_dts >= pkt->dts) {
2841 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2842 "packet %d with DTS %"PRId64", packet %d with DTS "
2843 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2844 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2845 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2847 /* check for a discontinuity in dts - if the difference in dts
2848 * is more than 1000 times the average packet duration in the sequence,
2849 * we treat it as a discontinuity */
2850 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2851 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2852 (pkt->dts - st->info->fps_last_dts) / 1000 >
2853 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2854 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2855 "packet %d with DTS %"PRId64", packet %d with DTS "
2856 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2857 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2858 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2861 /* update stored dts values */
2862 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
2863 st->info->fps_first_dts = pkt->dts;
2864 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
2866 st->info->fps_last_dts = pkt->dts;
2867 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
2869 if (st->codec_info_nb_frames>1) {
2871 if (st->time_base.den > 0)
2872 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2873 if (st->avg_frame_rate.num > 0)
2874 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
2876 if (t >= ic->max_analyze_duration) {
2877 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
2880 if (pkt->duration) {
2881 st->info->codec_info_duration += pkt->duration;
2882 st->info->codec_info_duration_fields += st->parser && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
2885 #if FF_API_R_FRAME_RATE
2887 int64_t last = st->info->last_dts;
2889 if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
2890 && pkt->dts - (uint64_t)last < INT64_MAX){
2891 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2892 int64_t duration= pkt->dts - last;
2894 if (!st->info->duration_error)
2895 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2897 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2898 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2899 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2900 int framerate= get_std_framerate(i);
2901 double sdts= dts*framerate/(1001*12);
2903 int64_t ticks= llrint(sdts+j*0.5);
2904 double error= sdts - ticks + j*0.5;
2905 st->info->duration_error[j][0][i] += error;
2906 st->info->duration_error[j][1][i] += error*error;
2909 st->info->duration_count++;
2910 // ignore the first 4 values, they might have some random jitter
2911 if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
2912 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2914 if (pkt->dts != AV_NOPTS_VALUE)
2915 st->info->last_dts = pkt->dts;
2918 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2919 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2920 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2921 st->codec->extradata_size= i;
2922 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2923 if (!st->codec->extradata)
2924 return AVERROR(ENOMEM);
2925 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2926 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2930 /* if still no information, we try to open the codec and to
2931 decompress the frame. We try to avoid that in most cases as
2932 it takes longer and uses more memory. For MPEG-4, we need to
2933 decompress for QuickTime.
2935 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2936 least one frame of codec data, this makes sure the codec initializes
2937 the channel configuration and does not only trust the values from the container.
2939 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2941 st->codec_info_nb_frames++;
2946 AVPacket empty_pkt = { 0 };
2948 av_init_packet(&empty_pkt);
2950 ret = -1; /* we could not have all the codec parameters before EOF */
2951 for(i=0;i<ic->nb_streams;i++) {
2954 st = ic->streams[i];
2956 /* flush the decoders */
2957 if (st->info->found_decoder == 1) {
2959 err = try_decode_frame(st, &empty_pkt,
2960 (options && i < orig_nb_streams) ?
2961 &options[i] : NULL);
2962 } while (err > 0 && !has_codec_parameters(st, NULL));
2965 av_log(ic, AV_LOG_INFO,
2966 "decoding for stream %d failed\n", st->index);
2970 if (!has_codec_parameters(st, &errmsg)) {
2972 avcodec_string(buf, sizeof(buf), st->codec, 0);
2973 av_log(ic, AV_LOG_WARNING,
2974 "Could not find codec parameters for stream %d (%s): %s\n"
2975 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
2983 // close codecs which were opened in try_decode_frame()
2984 for(i=0;i<ic->nb_streams;i++) {
2985 st = ic->streams[i];
2986 avcodec_close(st->codec);
2988 for(i=0;i<ic->nb_streams;i++) {
2989 st = ic->streams[i];
2990 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2991 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2992 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2993 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2994 st->codec->codec_tag= tag;
2997 /* estimate average framerate if not set by demuxer */
2998 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3000 double best_error = 0.01;
3002 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3003 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3004 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3006 /* round guessed framerate to a "standard" framerate if it's
3007 * within 1% of the original estimate*/
3008 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3009 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3010 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3012 if (error < best_error) {
3014 best_fps = std_fps.num;
3018 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3019 best_fps, 12*1001, INT_MAX);
3022 // the check for tb_unreliable() is not completely correct, since this is not about handling
3023 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3024 // ipmovie.c produces.
3025 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)
3026 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);
3027 if (st->info->duration_count>1 && !st->r_frame_rate.num
3028 && tb_unreliable(st->codec)) {
3030 double best_error= 0.01;
3032 for (j=0; j<MAX_STD_TIMEBASES; j++) {
3035 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3037 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
3040 int n= st->info->duration_count;
3041 double a= st->info->duration_error[k][0][j] / n;
3042 double error= st->info->duration_error[k][1][j]/n - a*a;
3044 if(error < best_error && best_error> 0.000000001){
3046 num = get_std_framerate(j);
3049 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3052 // do not increase frame rate by more than 1 % in order to match a standard rate.
3053 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
3054 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3057 if (!st->r_frame_rate.num){
3058 if( st->codec->time_base.den * (int64_t)st->time_base.num
3059 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3060 st->r_frame_rate.num = st->codec->time_base.den;
3061 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3063 st->r_frame_rate.num = st->time_base.den;
3064 st->r_frame_rate.den = st->time_base.num;
3067 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3068 if(!st->codec->bits_per_coded_sample)
3069 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3070 // set stream disposition based on audio service type
3071 switch (st->codec->audio_service_type) {
3072 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3073 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3074 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3075 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3076 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3077 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3078 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3079 st->disposition = AV_DISPOSITION_COMMENT; break;
3080 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3081 st->disposition = AV_DISPOSITION_KARAOKE; break;
3087 estimate_timings(ic, old_offset);
3089 compute_chapters_end(ic);
3091 find_stream_info_err:
3092 for (i=0; i < ic->nb_streams; i++) {
3093 st = ic->streams[i];
3094 if (ic->streams[i]->codec)
3095 ic->streams[i]->codec->thread_count = 0;
3097 av_freep(&st->info->duration_error);
3098 av_freep(&ic->streams[i]->info);
3101 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
3105 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3109 for (i = 0; i < ic->nb_programs; i++) {
3110 if (ic->programs[i] == last) {
3114 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3115 if (ic->programs[i]->stream_index[j] == s)
3116 return ic->programs[i];
3122 int av_find_best_stream(AVFormatContext *ic,
3123 enum AVMediaType type,
3124 int wanted_stream_nb,
3126 AVCodec **decoder_ret,
3129 int i, nb_streams = ic->nb_streams;
3130 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3131 unsigned *program = NULL;
3132 AVCodec *decoder = NULL, *best_decoder = NULL;
3134 if (related_stream >= 0 && wanted_stream_nb < 0) {
3135 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3137 program = p->stream_index;
3138 nb_streams = p->nb_stream_indexes;
3141 for (i = 0; i < nb_streams; i++) {
3142 int real_stream_index = program ? program[i] : i;
3143 AVStream *st = ic->streams[real_stream_index];
3144 AVCodecContext *avctx = st->codec;
3145 if (avctx->codec_type != type)
3147 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3149 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3152 decoder = avcodec_find_decoder(st->codec->codec_id);
3155 ret = AVERROR_DECODER_NOT_FOUND;
3159 count = st->codec_info_nb_frames;
3160 bitrate = avctx->bit_rate;
3161 multiframe = FFMIN(5, count);
3162 if ((best_multiframe > multiframe) ||
3163 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3164 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3167 best_bitrate = bitrate;
3168 best_multiframe = multiframe;
3169 ret = real_stream_index;
3170 best_decoder = decoder;
3171 if (program && i == nb_streams - 1 && ret < 0) {
3173 nb_streams = ic->nb_streams;
3174 i = 0; /* no related stream found, try again with everything */
3178 *decoder_ret = best_decoder;
3182 /*******************************************************/
3184 int av_read_play(AVFormatContext *s)
3186 if (s->iformat->read_play)
3187 return s->iformat->read_play(s);
3189 return avio_pause(s->pb, 0);
3190 return AVERROR(ENOSYS);
3193 int av_read_pause(AVFormatContext *s)
3195 if (s->iformat->read_pause)
3196 return s->iformat->read_pause(s);
3198 return avio_pause(s->pb, 1);
3199 return AVERROR(ENOSYS);
3202 void ff_free_stream(AVFormatContext *s, AVStream *st){
3203 av_assert0(s->nb_streams>0);
3204 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3207 av_parser_close(st->parser);
3209 if (st->attached_pic.data)
3210 av_free_packet(&st->attached_pic);
3211 av_dict_free(&st->metadata);
3212 av_freep(&st->index_entries);
3213 av_freep(&st->codec->extradata);
3214 av_freep(&st->codec->subtitle_header);
3215 av_freep(&st->codec);
3216 av_freep(&st->priv_data);
3218 av_freep(&st->info->duration_error);
3219 av_freep(&st->info);
3220 av_freep(&st->probe_data.buf);
3221 av_freep(&s->streams[ --s->nb_streams ]);
3224 void avformat_free_context(AVFormatContext *s)
3232 if (s->iformat && s->iformat->priv_class && s->priv_data)
3233 av_opt_free(s->priv_data);
3235 for(i=s->nb_streams-1; i>=0; i--) {
3236 ff_free_stream(s, s->streams[i]);
3238 for(i=s->nb_programs-1; i>=0; i--) {
3239 av_dict_free(&s->programs[i]->metadata);
3240 av_freep(&s->programs[i]->stream_index);
3241 av_freep(&s->programs[i]);
3243 av_freep(&s->programs);
3244 av_freep(&s->priv_data);
3245 while(s->nb_chapters--) {
3246 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3247 av_freep(&s->chapters[s->nb_chapters]);
3249 av_freep(&s->chapters);
3250 av_dict_free(&s->metadata);
3251 av_freep(&s->streams);
3255 #if FF_API_CLOSE_INPUT_FILE
3256 void av_close_input_file(AVFormatContext *s)
3258 avformat_close_input(&s);
3262 void avformat_close_input(AVFormatContext **ps)
3264 AVFormatContext *s = *ps;
3265 AVIOContext *pb = s->pb;
3267 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3268 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3271 flush_packet_queue(s);
3274 if (s->iformat->read_close)
3275 s->iformat->read_close(s);
3278 avformat_free_context(s);
3285 #if FF_API_NEW_STREAM
3286 AVStream *av_new_stream(AVFormatContext *s, int id)
3288 AVStream *st = avformat_new_stream(s, NULL);
3295 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3301 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3303 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
3306 s->streams = streams;
3308 st = av_mallocz(sizeof(AVStream));
3311 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3315 st->info->last_dts = AV_NOPTS_VALUE;
3317 st->codec = avcodec_alloc_context3(c);
3319 /* no default bitrate if decoding */
3320 st->codec->bit_rate = 0;
3322 st->index = s->nb_streams;
3323 st->start_time = AV_NOPTS_VALUE;
3324 st->duration = AV_NOPTS_VALUE;
3325 /* we set the current DTS to 0 so that formats without any timestamps
3326 but durations get some timestamps, formats with some unknown
3327 timestamps have their first few packets buffered and the
3328 timestamps corrected before they are returned to the user */
3329 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3330 st->first_dts = AV_NOPTS_VALUE;
3331 st->probe_packets = MAX_PROBE_PACKETS;
3332 st->pts_wrap_reference = AV_NOPTS_VALUE;
3333 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3335 /* default pts setting is MPEG-like */
3336 avpriv_set_pts_info(st, 33, 1, 90000);
3337 st->last_IP_pts = AV_NOPTS_VALUE;
3338 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3339 st->pts_buffer[i]= AV_NOPTS_VALUE;
3340 st->reference_dts = AV_NOPTS_VALUE;
3342 st->sample_aspect_ratio = (AVRational){0,1};
3344 #if FF_API_R_FRAME_RATE
3345 st->info->last_dts = AV_NOPTS_VALUE;
3347 st->info->fps_first_dts = AV_NOPTS_VALUE;
3348 st->info->fps_last_dts = AV_NOPTS_VALUE;
3350 s->streams[s->nb_streams++] = st;
3354 AVProgram *av_new_program(AVFormatContext *ac, int id)
3356 AVProgram *program=NULL;
3359 av_dlog(ac, "new_program: id=0x%04x\n", id);
3361 for(i=0; i<ac->nb_programs; i++)
3362 if(ac->programs[i]->id == id)
3363 program = ac->programs[i];
3366 program = av_mallocz(sizeof(AVProgram));
3369 dynarray_add(&ac->programs, &ac->nb_programs, program);
3370 program->discard = AVDISCARD_NONE;
3373 program->pts_wrap_reference = AV_NOPTS_VALUE;
3374 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3376 program->start_time =
3377 program->end_time = AV_NOPTS_VALUE;
3382 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3384 AVChapter *chapter = NULL;
3387 for(i=0; i<s->nb_chapters; i++)
3388 if(s->chapters[i]->id == id)
3389 chapter = s->chapters[i];
3392 chapter= av_mallocz(sizeof(AVChapter));
3395 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3397 av_dict_set(&chapter->metadata, "title", title, 0);
3399 chapter->time_base= time_base;
3400 chapter->start = start;
3406 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3409 AVProgram *program=NULL;
3412 if (idx >= ac->nb_streams) {
3413 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3417 for(i=0; i<ac->nb_programs; i++){
3418 if(ac->programs[i]->id != progid)
3420 program = ac->programs[i];
3421 for(j=0; j<program->nb_stream_indexes; j++)
3422 if(program->stream_index[j] == idx)
3425 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3428 program->stream_index = tmp;
3429 program->stream_index[program->nb_stream_indexes++] = idx;
3434 static void print_fps(double d, const char *postfix){
3435 uint64_t v= lrintf(d*100);
3436 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3437 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3438 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3441 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3443 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3444 AVDictionaryEntry *tag=NULL;
3446 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3447 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3448 if(strcmp("language", tag->key)){
3449 const char *p = tag->value;
3450 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3453 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3454 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3455 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3457 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3458 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3461 av_log(ctx, AV_LOG_INFO, "\n");
3467 /* "user interface" functions */
3468 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3471 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3472 AVStream *st = ic->streams[i];
3473 int g = av_gcd(st->time_base.num, st->time_base.den);
3474 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3475 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3476 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3477 /* the pid is an important information, so we display it */
3478 /* XXX: add a generic system */
3479 if (flags & AVFMT_SHOW_IDS)
3480 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3482 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3483 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3484 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3485 if (st->sample_aspect_ratio.num && // default
3486 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3487 AVRational display_aspect_ratio;
3488 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3489 st->codec->width*st->sample_aspect_ratio.num,
3490 st->codec->height*st->sample_aspect_ratio.den,
3492 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3493 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3494 display_aspect_ratio.num, display_aspect_ratio.den);
3496 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3497 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3498 print_fps(av_q2d(st->avg_frame_rate), "fps");
3499 #if FF_API_R_FRAME_RATE
3500 if(st->r_frame_rate.den && st->r_frame_rate.num)
3501 print_fps(av_q2d(st->r_frame_rate), "tbr");
3503 if(st->time_base.den && st->time_base.num)
3504 print_fps(1/av_q2d(st->time_base), "tbn");
3505 if(st->codec->time_base.den && st->codec->time_base.num)
3506 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3508 if (st->disposition & AV_DISPOSITION_DEFAULT)
3509 av_log(NULL, AV_LOG_INFO, " (default)");
3510 if (st->disposition & AV_DISPOSITION_DUB)
3511 av_log(NULL, AV_LOG_INFO, " (dub)");
3512 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3513 av_log(NULL, AV_LOG_INFO, " (original)");
3514 if (st->disposition & AV_DISPOSITION_COMMENT)
3515 av_log(NULL, AV_LOG_INFO, " (comment)");
3516 if (st->disposition & AV_DISPOSITION_LYRICS)
3517 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3518 if (st->disposition & AV_DISPOSITION_KARAOKE)
3519 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3520 if (st->disposition & AV_DISPOSITION_FORCED)
3521 av_log(NULL, AV_LOG_INFO, " (forced)");
3522 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3523 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3524 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3525 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3526 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3527 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3528 av_log(NULL, AV_LOG_INFO, "\n");
3529 dump_metadata(NULL, st->metadata, " ");
3532 void av_dump_format(AVFormatContext *ic,
3538 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3539 if (ic->nb_streams && !printed)
3542 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3543 is_output ? "Output" : "Input",
3545 is_output ? ic->oformat->name : ic->iformat->name,
3546 is_output ? "to" : "from", url);
3547 dump_metadata(NULL, ic->metadata, " ");
3549 av_log(NULL, AV_LOG_INFO, " Duration: ");
3550 if (ic->duration != AV_NOPTS_VALUE) {
3551 int hours, mins, secs, us;
3552 int64_t duration = ic->duration + 5000;
3553 secs = duration / AV_TIME_BASE;
3554 us = duration % AV_TIME_BASE;
3559 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3560 (100 * us) / AV_TIME_BASE);
3562 av_log(NULL, AV_LOG_INFO, "N/A");
3564 if (ic->start_time != AV_NOPTS_VALUE) {
3566 av_log(NULL, AV_LOG_INFO, ", start: ");
3567 secs = ic->start_time / AV_TIME_BASE;
3568 us = abs(ic->start_time % AV_TIME_BASE);
3569 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3570 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3572 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3574 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3576 av_log(NULL, AV_LOG_INFO, "N/A");
3578 av_log(NULL, AV_LOG_INFO, "\n");
3580 for (i = 0; i < ic->nb_chapters; i++) {
3581 AVChapter *ch = ic->chapters[i];
3582 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3583 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3584 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3586 dump_metadata(NULL, ch->metadata, " ");
3588 if(ic->nb_programs) {
3589 int j, k, total = 0;
3590 for(j=0; j<ic->nb_programs; j++) {
3591 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3593 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3594 name ? name->value : "");
3595 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3596 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3597 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3598 printed[ic->programs[j]->stream_index[k]] = 1;
3600 total += ic->programs[j]->nb_stream_indexes;
3602 if (total < ic->nb_streams)
3603 av_log(NULL, AV_LOG_INFO, " No Program\n");
3605 for(i=0;i<ic->nb_streams;i++)
3607 dump_stream_format(ic, i, index, is_output);
3612 #if FF_API_AV_GETTIME && CONFIG_SHARED && HAVE_SYMVER
3613 FF_SYMVER(int64_t, av_gettime, (void), "LIBAVFORMAT_54")
3615 return av_gettime();
3619 uint64_t ff_ntp_time(void)
3621 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3624 int av_get_frame_filename(char *buf, int buf_size,
3625 const char *path, int number)
3628 char *q, buf1[20], c;
3629 int nd, len, percentd_found;
3641 while (isdigit(*p)) {
3642 nd = nd * 10 + *p++ - '0';
3645 } while (isdigit(c));
3654 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3656 if ((q - buf + len) > buf_size - 1)
3658 memcpy(q, buf1, len);
3666 if ((q - buf) < buf_size - 1)
3670 if (!percentd_found)
3679 static void hex_dump_internal(void *avcl, FILE *f, int level,
3680 const uint8_t *buf, int size)
3683 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3685 for(i=0;i<size;i+=16) {
3692 PRINT(" %02x", buf[i+j]);
3697 for(j=0;j<len;j++) {
3699 if (c < ' ' || c > '~')
3708 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3710 hex_dump_internal(NULL, f, 0, buf, size);
3713 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3715 hex_dump_internal(avcl, NULL, level, buf, size);
3718 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3720 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3721 PRINT("stream #%d:\n", pkt->stream_index);
3722 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3723 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3724 /* DTS is _always_ valid after av_read_frame() */
3726 if (pkt->dts == AV_NOPTS_VALUE)
3729 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3730 /* PTS may not be known if B-frames are present. */
3732 if (pkt->pts == AV_NOPTS_VALUE)
3735 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3737 PRINT(" size=%d\n", pkt->size);
3740 av_hex_dump(f, pkt->data, pkt->size);
3744 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3746 AVRational tb = { 1, AV_TIME_BASE };
3747 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3751 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3753 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3757 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3759 AVRational tb = { 1, AV_TIME_BASE };
3760 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3764 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3767 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3770 void av_url_split(char *proto, int proto_size,
3771 char *authorization, int authorization_size,
3772 char *hostname, int hostname_size,
3774 char *path, int path_size,
3777 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3779 if (port_ptr) *port_ptr = -1;
3780 if (proto_size > 0) proto[0] = 0;
3781 if (authorization_size > 0) authorization[0] = 0;
3782 if (hostname_size > 0) hostname[0] = 0;
3783 if (path_size > 0) path[0] = 0;
3785 /* parse protocol */
3786 if ((p = strchr(url, ':'))) {
3787 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3792 /* no protocol means plain filename */
3793 av_strlcpy(path, url, path_size);
3797 /* separate path from hostname */
3798 ls = strchr(p, '/');
3799 ls2 = strchr(p, '?');
3803 ls = FFMIN(ls, ls2);
3805 av_strlcpy(path, ls, path_size);
3807 ls = &p[strlen(p)]; // XXX
3809 /* the rest is hostname, use that to parse auth/port */
3811 /* authorization (user[:pass]@hostname) */
3813 while ((at = strchr(p, '@')) && at < ls) {
3814 av_strlcpy(authorization, at2,
3815 FFMIN(authorization_size, at + 1 - at2));
3816 p = at + 1; /* skip '@' */
3819 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3821 av_strlcpy(hostname, p + 1,
3822 FFMIN(hostname_size, brk - p));
3823 if (brk[1] == ':' && port_ptr)
3824 *port_ptr = atoi(brk + 2);
3825 } else if ((col = strchr(p, ':')) && col < ls) {
3826 av_strlcpy(hostname, p,
3827 FFMIN(col + 1 - p, hostname_size));
3828 if (port_ptr) *port_ptr = atoi(col + 1);
3830 av_strlcpy(hostname, p,
3831 FFMIN(ls + 1 - p, hostname_size));
3835 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3838 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3841 'C', 'D', 'E', 'F' };
3842 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3845 'c', 'd', 'e', 'f' };
3846 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3848 for(i = 0; i < s; i++) {
3849 buff[i * 2] = hex_table[src[i] >> 4];
3850 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3856 int ff_hex_to_data(uint8_t *data, const char *p)
3863 p += strspn(p, SPACE_CHARS);
3866 c = toupper((unsigned char) *p++);
3867 if (c >= '0' && c <= '9')
3869 else if (c >= 'A' && c <= 'F')
3884 #if FF_API_SET_PTS_INFO
3885 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3886 unsigned int pts_num, unsigned int pts_den)
3888 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3892 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3893 unsigned int pts_num, unsigned int pts_den)
3896 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3897 if(new_tb.num != pts_num)
3898 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3900 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3902 if(new_tb.num <= 0 || new_tb.den <= 0) {
3903 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);
3906 s->time_base = new_tb;
3907 av_codec_set_pkt_timebase(s->codec, new_tb);
3908 s->pts_wrap_bits = pts_wrap_bits;
3911 int ff_url_join(char *str, int size, const char *proto,
3912 const char *authorization, const char *hostname,
3913 int port, const char *fmt, ...)
3916 struct addrinfo hints = { 0 }, *ai;
3921 av_strlcatf(str, size, "%s://", proto);
3922 if (authorization && authorization[0])
3923 av_strlcatf(str, size, "%s@", authorization);
3924 #if CONFIG_NETWORK && defined(AF_INET6)
3925 /* Determine if hostname is a numerical IPv6 address,
3926 * properly escape it within [] in that case. */
3927 hints.ai_flags = AI_NUMERICHOST;
3928 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
3929 if (ai->ai_family == AF_INET6) {
3930 av_strlcat(str, "[", size);
3931 av_strlcat(str, hostname, size);
3932 av_strlcat(str, "]", size);
3934 av_strlcat(str, hostname, size);
3939 /* Not an IPv6 address, just output the plain string. */
3940 av_strlcat(str, hostname, size);
3943 av_strlcatf(str, size, ":%d", port);
3946 int len = strlen(str);
3949 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
3955 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
3956 AVFormatContext *src)
3961 local_pkt.stream_index = dst_stream;
3962 if (pkt->pts != AV_NOPTS_VALUE)
3963 local_pkt.pts = av_rescale_q(pkt->pts,
3964 src->streams[pkt->stream_index]->time_base,
3965 dst->streams[dst_stream]->time_base);
3966 if (pkt->dts != AV_NOPTS_VALUE)
3967 local_pkt.dts = av_rescale_q(pkt->dts,
3968 src->streams[pkt->stream_index]->time_base,
3969 dst->streams[dst_stream]->time_base);
3970 return av_write_frame(dst, &local_pkt);
3973 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3976 const char *ptr = str;
3978 /* Parse key=value pairs. */
3981 char *dest = NULL, *dest_end;
3982 int key_len, dest_len = 0;
3984 /* Skip whitespace and potential commas. */
3985 while (*ptr && (isspace(*ptr) || *ptr == ','))
3992 if (!(ptr = strchr(key, '=')))
3995 key_len = ptr - key;
3997 callback_get_buf(context, key, key_len, &dest, &dest_len);
3998 dest_end = dest + dest_len - 1;
4002 while (*ptr && *ptr != '\"') {
4006 if (dest && dest < dest_end)
4010 if (dest && dest < dest_end)
4018 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4019 if (dest && dest < dest_end)
4027 int ff_find_stream_index(AVFormatContext *s, int id)
4030 for (i = 0; i < s->nb_streams; i++) {
4031 if (s->streams[i]->id == id)
4037 void ff_make_absolute_url(char *buf, int size, const char *base,
4040 char *sep, *path_query;
4041 /* Absolute path, relative to the current server */
4042 if (base && strstr(base, "://") && rel[0] == '/') {
4044 av_strlcpy(buf, base, size);
4045 sep = strstr(buf, "://");
4047 /* Take scheme from base url */
4048 if (rel[1] == '/') {
4051 /* Take scheme and host from base url */
4053 sep = strchr(sep, '/');
4058 av_strlcat(buf, rel, size);
4061 /* If rel actually is an absolute url, just copy it */
4062 if (!base || strstr(rel, "://") || rel[0] == '/') {
4063 av_strlcpy(buf, rel, size);
4067 av_strlcpy(buf, base, size);
4069 /* Strip off any query string from base */
4070 path_query = strchr(buf, '?');
4071 if (path_query != NULL)
4074 /* Is relative path just a new query part? */
4075 if (rel[0] == '?') {
4076 av_strlcat(buf, rel, size);
4080 /* Remove the file name from the base url */
4081 sep = strrchr(buf, '/');
4086 while (av_strstart(rel, "../", NULL) && sep) {
4087 /* Remove the path delimiter at the end */
4089 sep = strrchr(buf, '/');
4090 /* If the next directory name to pop off is "..", break here */
4091 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4092 /* Readd the slash we just removed */
4093 av_strlcat(buf, "/", size);
4096 /* Cut off the directory name */
4103 av_strlcat(buf, rel, size);
4106 int64_t ff_iso8601_to_unix_time(const char *datestr)
4108 struct tm time1 = {0}, time2 = {0};
4110 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4111 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4113 return av_timegm(&time2);
4115 return av_timegm(&time1);
4118 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4121 if (ofmt->query_codec)
4122 return ofmt->query_codec(codec_id, std_compliance);
4123 else if (ofmt->codec_tag)
4124 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4125 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4126 codec_id == ofmt->subtitle_codec)
4129 return AVERROR_PATCHWELCOME;
4132 int avformat_network_init(void)
4136 ff_network_inited_globally = 1;
4137 if ((ret = ff_network_init()) < 0)
4144 int avformat_network_deinit(void)
4153 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4154 uint64_t channel_layout, int32_t sample_rate,
4155 int32_t width, int32_t height)
4161 return AVERROR(EINVAL);
4164 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4166 if (channel_layout) {
4168 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4172 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4174 if (width || height) {
4176 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4178 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4180 return AVERROR(ENOMEM);
4181 bytestream_put_le32(&data, flags);
4183 bytestream_put_le32(&data, channels);
4185 bytestream_put_le64(&data, channel_layout);
4187 bytestream_put_le32(&data, sample_rate);
4188 if (width || height) {
4189 bytestream_put_le32(&data, width);
4190 bytestream_put_le32(&data, height);
4195 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4197 return ff_codec_bmp_tags;
4199 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4201 return ff_codec_wav_tags;
4204 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4206 AVRational undef = {0, 1};
4207 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4208 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4209 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4211 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4212 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4213 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4214 stream_sample_aspect_ratio = undef;
4216 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4217 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4218 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4219 frame_sample_aspect_ratio = undef;
4221 if (stream_sample_aspect_ratio.num)
4222 return stream_sample_aspect_ratio;
4224 return frame_sample_aspect_ratio;
4227 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4230 if (*spec <= '9' && *spec >= '0') /* opt:index */
4231 return strtol(spec, NULL, 0) == st->index;
4232 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4233 *spec == 't') { /* opt:[vasdt] */
4234 enum AVMediaType type;
4237 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4238 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4239 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4240 case 'd': type = AVMEDIA_TYPE_DATA; break;
4241 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4242 default: av_assert0(0);
4244 if (type != st->codec->codec_type)
4246 if (*spec++ == ':') { /* possibly followed by :index */
4247 int i, index = strtol(spec, NULL, 0);
4248 for (i = 0; i < s->nb_streams; i++)
4249 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4250 return i == st->index;
4254 } else if (*spec == 'p' && *(spec + 1) == ':') {
4258 prog_id = strtol(spec, &endptr, 0);
4259 for (i = 0; i < s->nb_programs; i++) {
4260 if (s->programs[i]->id != prog_id)
4263 if (*endptr++ == ':') {
4264 int stream_idx = strtol(endptr, NULL, 0);
4265 return stream_idx >= 0 &&
4266 stream_idx < s->programs[i]->nb_stream_indexes &&
4267 st->index == s->programs[i]->stream_index[stream_idx];
4270 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4271 if (st->index == s->programs[i]->stream_index[j])
4275 } else if (*spec == '#') {
4278 sid = strtol(spec + 1, &endptr, 0);
4280 return st->id == sid;
4281 } else if (!*spec) /* empty specifier, matches everything */
4284 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4285 return AVERROR(EINVAL);
4288 void ff_generate_avci_extradata(AVStream *st)
4290 static const uint8_t avci100_1080p_extradata[] = {
4292 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4293 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4294 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4295 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4296 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4297 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4298 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4299 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4300 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4302 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4305 static const uint8_t avci100_1080i_extradata[] = {
4307 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4308 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4309 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4310 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4311 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4312 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4313 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4314 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4315 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4316 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4317 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4319 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4322 static const uint8_t avci50_1080i_extradata[] = {
4324 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4325 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4326 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4327 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4328 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4329 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4330 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4331 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4332 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4333 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4334 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4336 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4339 static const uint8_t avci100_720p_extradata[] = {
4341 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4342 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4343 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4344 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4345 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4346 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4347 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4348 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4349 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4350 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4352 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4356 const uint8_t *data = 0;
4357 if (st->codec->width == 1920) {
4358 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4359 data = avci100_1080p_extradata;
4360 size = sizeof(avci100_1080p_extradata);
4362 data = avci100_1080i_extradata;
4363 size = sizeof(avci100_1080i_extradata);
4365 } else if (st->codec->width == 1440) {
4366 data = avci50_1080i_extradata;
4367 size = sizeof(avci50_1080i_extradata);
4368 } else if (st->codec->width == 1280) {
4369 data = avci100_720p_extradata;
4370 size = sizeof(avci100_720p_extradata);
4374 av_freep(&st->codec->extradata);
4375 st->codec->extradata_size = 0;
4376 st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
4377 if (!st->codec->extradata)
4379 memcpy(st->codec->extradata, data, size);
4380 st->codec->extradata_size = size;