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"
41 #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));
81 /* fraction handling */
84 * f = val + (num / den) + 0.5.
86 * 'num' is normalized so that it is such as 0 <= num < den.
88 * @param f fractional number
89 * @param val integer value
90 * @param num must be >= 0
91 * @param den must be >= 1
93 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
106 * Fractional addition to f: f = f + (incr / f->den).
108 * @param f fractional number
109 * @param incr increment, can be positive or negative
111 static void frac_add(AVFrac *f, int64_t incr)
124 } else if (num >= den) {
131 /** head of registered input format linked list */
132 static AVInputFormat *first_iformat = NULL;
133 /** head of registered output format linked list */
134 static AVOutputFormat *first_oformat = NULL;
136 AVInputFormat *av_iformat_next(AVInputFormat *f)
138 if(f) return f->next;
139 else return first_iformat;
142 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
144 if(f) return f->next;
145 else return first_oformat;
148 void av_register_input_format(AVInputFormat *format)
152 while (*p != NULL) p = &(*p)->next;
157 void av_register_output_format(AVOutputFormat *format)
161 while (*p != NULL) p = &(*p)->next;
166 int av_match_ext(const char *filename, const char *extensions)
174 ext = strrchr(filename, '.');
180 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
183 if (!av_strcasecmp(ext1, ext))
193 static int match_format(const char *name, const char *names)
201 namelen = strlen(name);
202 while ((p = strchr(names, ','))) {
203 len = FFMAX(p - names, namelen);
204 if (!av_strncasecmp(name, names, len))
208 return !av_strcasecmp(name, names);
211 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
212 const char *mime_type)
214 AVOutputFormat *fmt = NULL, *fmt_found;
215 int score_max, score;
217 /* specific test for image sequences */
218 #if CONFIG_IMAGE2_MUXER
219 if (!short_name && filename &&
220 av_filename_number_test(filename) &&
221 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
222 return av_guess_format("image2", NULL, NULL);
225 /* Find the proper file type. */
228 while ((fmt = av_oformat_next(fmt))) {
230 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
232 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
234 if (filename && fmt->extensions &&
235 av_match_ext(filename, fmt->extensions)) {
238 if (score > score_max) {
246 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
247 const char *filename, const char *mime_type, enum AVMediaType type){
248 if(type == AVMEDIA_TYPE_VIDEO){
249 enum CodecID codec_id= CODEC_ID_NONE;
251 #if CONFIG_IMAGE2_MUXER
252 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
253 codec_id= ff_guess_image2_codec(filename);
256 if(codec_id == CODEC_ID_NONE)
257 codec_id= fmt->video_codec;
259 }else if(type == AVMEDIA_TYPE_AUDIO)
260 return fmt->audio_codec;
261 else if (type == AVMEDIA_TYPE_SUBTITLE)
262 return fmt->subtitle_codec;
264 return CODEC_ID_NONE;
267 AVInputFormat *av_find_input_format(const char *short_name)
269 AVInputFormat *fmt = NULL;
270 while ((fmt = av_iformat_next(fmt))) {
271 if (match_format(short_name, fmt->name))
277 int ffio_limit(AVIOContext *s, int size)
280 int64_t remaining= s->maxsize - avio_tell(s);
281 if(remaining < size){
282 int64_t newsize= avio_size(s);
283 if(!s->maxsize || s->maxsize<newsize)
284 s->maxsize= newsize - !newsize;
285 remaining= s->maxsize - avio_tell(s);
286 remaining= FFMAX(remaining, 0);
289 if(s->maxsize>=0 && remaining+1 < size){
290 av_log(0, AV_LOG_ERROR, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
297 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
300 size= ffio_limit(s, size);
302 ret= av_new_packet(pkt, size);
307 pkt->pos= avio_tell(s);
309 ret= avio_read(s, pkt->data, size);
313 av_shrink_packet(pkt, ret);
318 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 old_size = pkt->size;
325 ret = av_grow_packet(pkt, size);
328 ret = avio_read(s, pkt->data + old_size, size);
329 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
334 int av_filename_number_test(const char *filename)
337 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
340 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
342 AVProbeData lpd = *pd;
343 AVInputFormat *fmt1 = NULL, *fmt;
344 int score, nodat = 0, score_max=0;
346 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
347 int id3len = ff_id3v2_tag_len(lpd.buf);
348 if (lpd.buf_size > id3len + 16) {
350 lpd.buf_size -= id3len;
356 while ((fmt1 = av_iformat_next(fmt1))) {
357 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
360 if (fmt1->read_probe) {
361 score = fmt1->read_probe(&lpd);
362 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
363 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
364 } else if (fmt1->extensions) {
365 if (av_match_ext(lpd.filename, fmt1->extensions)) {
369 if (score > score_max) {
372 }else if (score == score_max)
375 *score_ret= score_max;
380 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
383 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
384 if(score_ret > *score_max){
385 *score_max= score_ret;
391 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
393 return av_probe_input_format2(pd, is_opened, &score);
396 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
398 static const struct {
399 const char *name; enum CodecID id; enum AVMediaType type;
401 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
402 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
403 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
404 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
405 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
406 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
407 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
408 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
409 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
413 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
417 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
418 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
419 for (i = 0; fmt_id_type[i].name; i++) {
420 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
421 st->codec->codec_id = fmt_id_type[i].id;
422 st->codec->codec_type = fmt_id_type[i].type;
430 /************************************************************/
431 /* input media file */
433 int av_demuxer_open(AVFormatContext *ic){
436 if (ic->iformat->read_header) {
437 err = ic->iformat->read_header(ic);
442 if (ic->pb && !ic->data_offset)
443 ic->data_offset = avio_tell(ic->pb);
449 /** size of probe buffer, for guessing file type from file contents */
450 #define PROBE_BUF_MIN 2048
451 #define PROBE_BUF_MAX (1<<20)
453 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
454 const char *filename, void *logctx,
455 unsigned int offset, unsigned int max_probe_size)
457 AVProbeData pd = { filename ? filename : "", NULL, -offset };
458 unsigned char *buf = NULL;
459 int ret = 0, probe_size;
461 if (!max_probe_size) {
462 max_probe_size = PROBE_BUF_MAX;
463 } else if (max_probe_size > PROBE_BUF_MAX) {
464 max_probe_size = PROBE_BUF_MAX;
465 } else if (max_probe_size < PROBE_BUF_MIN) {
466 return AVERROR(EINVAL);
469 if (offset >= max_probe_size) {
470 return AVERROR(EINVAL);
473 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
474 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
475 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
476 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
479 if (probe_size < offset) {
483 /* read probe data */
484 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
487 return AVERROR(ENOMEM);
490 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
491 /* fail if error was not end of file, otherwise, lower score */
492 if (ret != AVERROR_EOF) {
497 ret = 0; /* error was end of file, nothing read */
500 pd.buf = &buf[offset];
502 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
504 /* guess file format */
505 *fmt = av_probe_input_format2(&pd, 1, &score);
507 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
508 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
510 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
516 return AVERROR_INVALIDDATA;
519 /* rewind. reuse probe buffer to avoid seeking */
520 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
526 /* open input file and probe the format if necessary */
527 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
530 AVProbeData pd = {filename, NULL, 0};
533 s->flags |= AVFMT_FLAG_CUSTOM_IO;
535 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
536 else if (s->iformat->flags & AVFMT_NOFILE)
537 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
538 "will be ignored with AVFMT_NOFILE format.\n");
542 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
543 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
546 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
547 &s->interrupt_callback, options)) < 0)
551 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
554 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
555 AVPacketList **plast_pktl){
556 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
561 (*plast_pktl)->next = pktl;
563 *packet_buffer = pktl;
565 /* add the packet in the buffered packet list */
571 static void queue_attached_pictures(AVFormatContext *s)
574 for (i = 0; i < s->nb_streams; i++)
575 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
576 s->streams[i]->discard < AVDISCARD_ALL) {
577 AVPacket copy = s->streams[i]->attached_pic;
578 copy.destruct = NULL;
579 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
583 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
585 AVFormatContext *s = *ps;
587 AVDictionary *tmp = NULL;
588 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
590 if (!s && !(s = avformat_alloc_context()))
591 return AVERROR(ENOMEM);
593 av_log(0, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
594 return AVERROR(EINVAL);
600 av_dict_copy(&tmp, *options, 0);
602 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
605 if ((ret = init_input(s, filename, &tmp)) < 0)
608 /* check filename in case an image number is expected */
609 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
610 if (!av_filename_number_test(filename)) {
611 ret = AVERROR(EINVAL);
616 s->duration = s->start_time = AV_NOPTS_VALUE;
617 av_strlcpy(s->filename, filename, sizeof(s->filename));
619 /* allocate private data */
620 if (s->iformat->priv_data_size > 0) {
621 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
622 ret = AVERROR(ENOMEM);
625 if (s->iformat->priv_class) {
626 *(const AVClass**)s->priv_data = s->iformat->priv_class;
627 av_opt_set_defaults(s->priv_data);
628 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
633 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
635 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
637 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
638 if ((ret = s->iformat->read_header(s)) < 0)
641 if (id3v2_extra_meta &&
642 (ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
644 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
646 queue_attached_pictures(s);
648 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
649 s->data_offset = avio_tell(s->pb);
651 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
654 av_dict_free(options);
661 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
663 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
665 avformat_free_context(s);
670 /*******************************************************/
672 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
678 AVPacketList *pktl = s->raw_packet_buffer;
682 if(s->streams[pkt->stream_index]->request_probe <= 0){
683 s->raw_packet_buffer = pktl->next;
684 s->raw_packet_buffer_remaining_size += pkt->size;
691 ret= s->iformat->read_packet(s, pkt);
693 if (!pktl || ret == AVERROR(EAGAIN))
695 for (i = 0; i < s->nb_streams; i++)
696 if(s->streams[i]->request_probe > 0)
697 s->streams[i]->request_probe = -1;
701 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
702 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
703 av_log(s, AV_LOG_WARNING,
704 "Dropped corrupted packet (stream = %d)\n",
710 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
711 av_packet_merge_side_data(pkt);
713 if(pkt->stream_index >= (unsigned)s->nb_streams){
714 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
718 st= s->streams[pkt->stream_index];
720 switch(st->codec->codec_type){
721 case AVMEDIA_TYPE_VIDEO:
722 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
724 case AVMEDIA_TYPE_AUDIO:
725 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
727 case AVMEDIA_TYPE_SUBTITLE:
728 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
732 if(!pktl && st->request_probe <= 0)
735 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
736 s->raw_packet_buffer_remaining_size -= pkt->size;
738 if(st->request_probe>0){
739 AVProbeData *pd = &st->probe_data;
741 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
744 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
745 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
746 pd->buf_size += pkt->size;
747 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
749 end= s->raw_packet_buffer_remaining_size <= 0
750 || st->probe_packets<=0;
752 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
753 int score= set_codec_from_probe_data(s, st, pd);
754 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
758 st->request_probe= -1;
759 if(st->codec->codec_id != CODEC_ID_NONE){
760 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
762 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
769 #if FF_API_READ_PACKET
770 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
772 return ff_read_packet(s, pkt);
777 /**********************************************************/
779 static int determinable_frame_size(AVCodecContext *avctx)
781 if (/*avctx->codec_id == CODEC_ID_AAC ||*/
782 avctx->codec_id == CODEC_ID_MP1 ||
783 avctx->codec_id == CODEC_ID_MP2 ||
784 avctx->codec_id == CODEC_ID_MP3/* ||
785 avctx->codec_id == CODEC_ID_CELT*/)
791 * Get the number of samples of an audio frame. Return -1 on error.
793 static int get_audio_frame_size(AVCodecContext *enc, int size, int mux)
797 /* give frame_size priority if demuxing */
798 if (!mux && enc->frame_size > 1)
799 return enc->frame_size;
801 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
804 /* fallback to using frame_size if muxing */
805 if (enc->frame_size > 1)
806 return enc->frame_size;
813 * Return the frame duration in seconds. Return 0 if not available.
815 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
816 AVCodecParserContext *pc, AVPacket *pkt)
822 switch(st->codec->codec_type) {
823 case AVMEDIA_TYPE_VIDEO:
824 if (st->r_frame_rate.num && !pc) {
825 *pnum = st->r_frame_rate.den;
826 *pden = st->r_frame_rate.num;
827 } else if(st->time_base.num*1000LL > st->time_base.den) {
828 *pnum = st->time_base.num;
829 *pden = st->time_base.den;
830 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
831 *pnum = st->codec->time_base.num;
832 *pden = st->codec->time_base.den;
833 if (pc && pc->repeat_pict) {
834 *pnum = (*pnum) * (1 + pc->repeat_pict);
836 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
837 //Thus if we have no parser in such case leave duration undefined.
838 if(st->codec->ticks_per_frame>1 && !pc){
843 case AVMEDIA_TYPE_AUDIO:
844 frame_size = get_audio_frame_size(st->codec, pkt->size, 0);
845 if (frame_size <= 0 || st->codec->sample_rate <= 0)
848 *pden = st->codec->sample_rate;
855 static int is_intra_only(AVCodecContext *enc){
856 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
858 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
859 switch(enc->codec_id){
861 case CODEC_ID_MJPEGB:
863 case CODEC_ID_PRORES:
864 case CODEC_ID_RAWVIDEO:
866 case CODEC_ID_DVVIDEO:
867 case CODEC_ID_HUFFYUV:
868 case CODEC_ID_FFVHUFF:
873 case CODEC_ID_JPEG2000:
874 case CODEC_ID_UTVIDEO:
882 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
886 if (pktl == s->parse_queue_end)
887 return s->packet_buffer;
891 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
892 int64_t dts, int64_t pts)
894 AVStream *st= s->streams[stream_index];
895 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
897 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
900 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
903 if (is_relative(pts))
904 pts += st->first_dts - RELATIVE_TS_BASE;
906 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
907 if(pktl->pkt.stream_index != stream_index)
909 if(is_relative(pktl->pkt.pts))
910 pktl->pkt.pts += st->first_dts - RELATIVE_TS_BASE;
912 if(is_relative(pktl->pkt.dts))
913 pktl->pkt.dts += st->first_dts - RELATIVE_TS_BASE;
915 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
916 st->start_time= pktl->pkt.pts;
918 if (st->start_time == AV_NOPTS_VALUE)
919 st->start_time = pts;
922 static void update_initial_durations(AVFormatContext *s, AVStream *st,
923 int stream_index, int duration)
925 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
926 int64_t cur_dts= RELATIVE_TS_BASE;
928 if(st->first_dts != AV_NOPTS_VALUE){
929 cur_dts= st->first_dts;
930 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
931 if(pktl->pkt.stream_index == stream_index){
932 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
937 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
938 st->first_dts = cur_dts;
939 }else if(st->cur_dts != RELATIVE_TS_BASE)
942 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
943 if(pktl->pkt.stream_index != stream_index)
945 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
946 && !pktl->pkt.duration){
947 pktl->pkt.dts= cur_dts;
948 if(!st->codec->has_b_frames)
949 pktl->pkt.pts= cur_dts;
950 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
951 pktl->pkt.duration = duration;
954 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
957 st->cur_dts= cur_dts;
960 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
961 AVCodecParserContext *pc, AVPacket *pkt)
963 int num, den, presentation_delayed, delay, i;
966 if (s->flags & AVFMT_FLAG_NOFILLIN)
969 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
970 pkt->dts= AV_NOPTS_VALUE;
972 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
973 //FIXME Set low_delay = 0 when has_b_frames = 1
974 st->codec->has_b_frames = 1;
976 /* do we have a video B-frame ? */
977 delay= st->codec->has_b_frames;
978 presentation_delayed = 0;
980 /* XXX: need has_b_frame, but cannot get it if the codec is
983 pc && pc->pict_type != AV_PICTURE_TYPE_B)
984 presentation_delayed = 1;
986 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > pkt->pts && st->pts_wrap_bits<63){
987 pkt->dts -= 1LL<<st->pts_wrap_bits;
990 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
991 // we take the conservative approach and discard both
992 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
993 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
994 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
995 pkt->dts= AV_NOPTS_VALUE;
998 if (pkt->duration == 0) {
999 compute_frame_duration(&num, &den, st, pc, pkt);
1001 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1004 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1005 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1007 /* correct timestamps with byte offset if demuxers only have timestamps
1008 on packet boundaries */
1009 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1010 /* this will estimate bitrate based on this frame's duration and size */
1011 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1012 if(pkt->pts != AV_NOPTS_VALUE)
1014 if(pkt->dts != AV_NOPTS_VALUE)
1018 if (pc && pc->dts_sync_point >= 0) {
1019 // we have synchronization info from the parser
1020 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1022 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1023 if (pkt->dts != AV_NOPTS_VALUE) {
1024 // got DTS from the stream, update reference timestamp
1025 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1026 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1027 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1028 // compute DTS based on reference timestamp
1029 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1030 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1032 if (pc->dts_sync_point > 0)
1033 st->reference_dts = pkt->dts; // new reference
1037 /* This may be redundant, but it should not hurt. */
1038 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1039 presentation_delayed = 1;
1041 // av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p duration:%d\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc, pkt->duration);
1042 /* interpolate PTS and DTS if they are not present */
1043 //We skip H264 currently because delay and has_b_frames are not reliably set
1044 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1045 if (presentation_delayed) {
1046 /* DTS = decompression timestamp */
1047 /* PTS = presentation timestamp */
1048 if (pkt->dts == AV_NOPTS_VALUE)
1049 pkt->dts = st->last_IP_pts;
1050 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1051 if (pkt->dts == AV_NOPTS_VALUE)
1052 pkt->dts = st->cur_dts;
1054 /* this is tricky: the dts must be incremented by the duration
1055 of the frame we are displaying, i.e. the last I- or P-frame */
1056 if (st->last_IP_duration == 0)
1057 st->last_IP_duration = pkt->duration;
1058 if(pkt->dts != AV_NOPTS_VALUE)
1059 st->cur_dts = pkt->dts + st->last_IP_duration;
1060 st->last_IP_duration = pkt->duration;
1061 st->last_IP_pts= pkt->pts;
1062 /* cannot compute PTS if not present (we can compute it only
1063 by knowing the future */
1064 } else if (pkt->pts != AV_NOPTS_VALUE ||
1065 pkt->dts != AV_NOPTS_VALUE ||
1067 int duration = pkt->duration;
1069 if(pkt->pts != AV_NOPTS_VALUE && duration){
1070 int64_t old_diff= FFABS(st->cur_dts - duration - pkt->pts);
1071 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1072 if( old_diff < new_diff && old_diff < (duration>>3)
1073 && (!strcmp(s->iformat->name, "mpeg") ||
1074 !strcmp(s->iformat->name, "mpegts"))){
1075 pkt->pts += duration;
1076 av_log(s, AV_LOG_WARNING, "Adjusting PTS forward\n");
1077 // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%"PRId64" size:%d\n", pkt->stream_index, old_diff, new_diff, pkt->duration, st->cur_dts, pkt->size);
1081 /* presentation is not delayed : PTS and DTS are the same */
1082 if(pkt->pts == AV_NOPTS_VALUE)
1083 pkt->pts = pkt->dts;
1084 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1085 if(pkt->pts == AV_NOPTS_VALUE)
1086 pkt->pts = st->cur_dts;
1087 pkt->dts = pkt->pts;
1088 if(pkt->pts != AV_NOPTS_VALUE)
1089 st->cur_dts = pkt->pts + duration;
1093 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1094 st->pts_buffer[0]= pkt->pts;
1095 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1096 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1097 if(pkt->dts == AV_NOPTS_VALUE)
1098 pkt->dts= st->pts_buffer[0];
1099 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1100 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1102 if(pkt->dts > st->cur_dts)
1103 st->cur_dts = pkt->dts;
1106 // av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64"\n", presentation_delayed, delay, pkt->pts, pkt->dts, st->cur_dts);
1109 if(is_intra_only(st->codec))
1110 pkt->flags |= AV_PKT_FLAG_KEY;
1112 pkt->convergence_duration = pc->convergence_duration;
1115 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1118 AVPacketList *pktl = *pkt_buf;
1119 *pkt_buf = pktl->next;
1120 av_free_packet(&pktl->pkt);
1123 *pkt_buf_end = NULL;
1127 * Parse a packet, add all split parts to parse_queue
1129 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1131 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1133 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1134 AVStream *st = s->streams[stream_index];
1135 uint8_t *data = pkt ? pkt->data : NULL;
1136 int size = pkt ? pkt->size : 0;
1137 int ret = 0, got_output = 0;
1140 av_init_packet(&flush_pkt);
1143 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1144 // preserve 0-size sync packets
1145 compute_pkt_fields(s, st, st->parser, pkt);
1148 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1151 av_init_packet(&out_pkt);
1152 len = av_parser_parse2(st->parser, st->codec,
1153 &out_pkt.data, &out_pkt.size, data, size,
1154 pkt->pts, pkt->dts, pkt->pos);
1156 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1157 /* increment read pointer */
1161 got_output = !!out_pkt.size;
1166 /* set the duration */
1167 out_pkt.duration = 0;
1168 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1169 if (st->codec->sample_rate > 0) {
1170 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1171 (AVRational){ 1, st->codec->sample_rate },
1175 } else if (st->codec->time_base.num != 0 &&
1176 st->codec->time_base.den != 0) {
1177 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1178 st->codec->time_base,
1183 out_pkt.stream_index = st->index;
1184 out_pkt.pts = st->parser->pts;
1185 out_pkt.dts = st->parser->dts;
1186 out_pkt.pos = st->parser->pos;
1188 if (st->parser->key_frame == 1 ||
1189 (st->parser->key_frame == -1 &&
1190 st->parser->pict_type == AV_PICTURE_TYPE_I))
1191 out_pkt.flags |= AV_PKT_FLAG_KEY;
1193 compute_pkt_fields(s, st, st->parser, &out_pkt);
1195 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1196 out_pkt.flags & AV_PKT_FLAG_KEY) {
1197 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? out_pkt.pos : st->parser->frame_offset;
1198 ff_reduce_index(s, st->index);
1199 av_add_index_entry(st, pos, out_pkt.dts,
1200 0, 0, AVINDEX_KEYFRAME);
1203 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1204 out_pkt.destruct = pkt->destruct;
1205 pkt->destruct = NULL;
1207 if ((ret = av_dup_packet(&out_pkt)) < 0)
1210 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1211 av_free_packet(&out_pkt);
1212 ret = AVERROR(ENOMEM);
1218 /* end of the stream => close and free the parser */
1219 if (pkt == &flush_pkt) {
1220 av_parser_close(st->parser);
1225 av_free_packet(pkt);
1229 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1230 AVPacketList **pkt_buffer_end,
1234 av_assert0(*pkt_buffer);
1237 *pkt_buffer = pktl->next;
1239 *pkt_buffer_end = NULL;
1244 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1246 int ret = 0, i, got_packet = 0;
1248 av_init_packet(pkt);
1250 while (!got_packet && !s->parse_queue) {
1254 /* read next packet */
1255 ret = ff_read_packet(s, &cur_pkt);
1257 if (ret == AVERROR(EAGAIN))
1259 /* flush the parsers */
1260 for(i = 0; i < s->nb_streams; i++) {
1262 if (st->parser && st->need_parsing)
1263 parse_packet(s, NULL, st->index);
1265 /* all remaining packets are now in parse_queue =>
1266 * really terminate parsing */
1270 st = s->streams[cur_pkt.stream_index];
1272 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1273 cur_pkt.dts != AV_NOPTS_VALUE &&
1274 cur_pkt.pts < cur_pkt.dts) {
1275 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1276 cur_pkt.stream_index,
1281 if (s->debug & FF_FDEBUG_TS)
1282 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1283 cur_pkt.stream_index,
1290 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1291 st->parser = av_parser_init(st->codec->codec_id);
1293 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1294 "%s, packets or times may be invalid.\n",
1295 avcodec_get_name(st->codec->codec_id));
1296 /* no parser available: just output the raw packets */
1297 st->need_parsing = AVSTREAM_PARSE_NONE;
1298 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1299 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1300 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1301 st->parser->flags |= PARSER_FLAG_ONCE;
1305 if (!st->need_parsing || !st->parser) {
1306 /* no parsing needed: we just output the packet as is */
1308 compute_pkt_fields(s, st, NULL, pkt);
1309 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1310 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1311 ff_reduce_index(s, st->index);
1312 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1315 } else if (st->discard < AVDISCARD_ALL) {
1316 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1320 av_free_packet(&cur_pkt);
1322 if (pkt->flags & AV_PKT_FLAG_KEY)
1323 st->skip_to_keyframe = 0;
1324 if (st->skip_to_keyframe) {
1325 av_free_packet(&cur_pkt);
1330 if (!got_packet && s->parse_queue)
1331 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1333 if(s->debug & FF_FDEBUG_TS)
1334 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1345 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1347 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1352 ret = s->packet_buffer ? read_from_packet_buffer(&s->packet_buffer,
1353 &s->packet_buffer_end,
1355 read_frame_internal(s, pkt);
1360 AVPacketList *pktl = s->packet_buffer;
1363 AVPacket *next_pkt = &pktl->pkt;
1365 if (next_pkt->dts != AV_NOPTS_VALUE) {
1366 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1367 // last dts seen for this stream. if any of packets following
1368 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1369 int64_t last_dts = next_pkt->dts;
1370 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1371 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1372 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1373 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1374 next_pkt->pts = pktl->pkt.dts;
1376 if (last_dts != AV_NOPTS_VALUE) {
1377 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1378 last_dts = pktl->pkt.dts;
1383 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1384 // Fixing the last reference frame had none pts issue (For MXF etc).
1385 // We only do this when
1387 // 2. we are not able to resolve a pts value for current packet.
1388 // 3. the packets for this stream at the end of the files had valid dts.
1389 next_pkt->pts = last_dts + next_pkt->duration;
1391 pktl = s->packet_buffer;
1394 /* read packet from packet buffer, if there is data */
1395 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1396 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1397 ret = read_from_packet_buffer(&s->packet_buffer,
1398 &s->packet_buffer_end, pkt);
1403 ret = read_frame_internal(s, pkt);
1405 if (pktl && ret != AVERROR(EAGAIN)) {
1412 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1413 &s->packet_buffer_end)) < 0)
1414 return AVERROR(ENOMEM);
1418 if (is_relative(pkt->dts))
1419 pkt->dts -= RELATIVE_TS_BASE;
1420 if (is_relative(pkt->pts))
1421 pkt->pts -= RELATIVE_TS_BASE;
1425 /* XXX: suppress the packet queue */
1426 static void flush_packet_queue(AVFormatContext *s)
1428 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1429 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1430 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1432 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1435 /*******************************************************/
1438 int av_find_default_stream_index(AVFormatContext *s)
1440 int first_audio_index = -1;
1444 if (s->nb_streams <= 0)
1446 for(i = 0; i < s->nb_streams; i++) {
1448 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1449 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1452 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1453 first_audio_index = i;
1455 return first_audio_index >= 0 ? first_audio_index : 0;
1459 * Flush the frame reader.
1461 void ff_read_frame_flush(AVFormatContext *s)
1466 flush_packet_queue(s);
1468 /* for each stream, reset read state */
1469 for(i = 0; i < s->nb_streams; i++) {
1473 av_parser_close(st->parser);
1476 st->last_IP_pts = AV_NOPTS_VALUE;
1477 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1478 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1479 st->reference_dts = AV_NOPTS_VALUE;
1481 st->probe_packets = MAX_PROBE_PACKETS;
1483 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1484 st->pts_buffer[j]= AV_NOPTS_VALUE;
1488 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1492 for(i = 0; i < s->nb_streams; i++) {
1493 AVStream *st = s->streams[i];
1495 st->cur_dts = av_rescale(timestamp,
1496 st->time_base.den * (int64_t)ref_st->time_base.num,
1497 st->time_base.num * (int64_t)ref_st->time_base.den);
1501 void ff_reduce_index(AVFormatContext *s, int stream_index)
1503 AVStream *st= s->streams[stream_index];
1504 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1506 if((unsigned)st->nb_index_entries >= max_entries){
1508 for(i=0; 2*i<st->nb_index_entries; i++)
1509 st->index_entries[i]= st->index_entries[2*i];
1510 st->nb_index_entries= i;
1514 int ff_add_index_entry(AVIndexEntry **index_entries,
1515 int *nb_index_entries,
1516 unsigned int *index_entries_allocated_size,
1517 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1519 AVIndexEntry *entries, *ie;
1522 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1525 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1526 timestamp -= RELATIVE_TS_BASE;
1528 entries = av_fast_realloc(*index_entries,
1529 index_entries_allocated_size,
1530 (*nb_index_entries + 1) *
1531 sizeof(AVIndexEntry));
1535 *index_entries= entries;
1537 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1540 index= (*nb_index_entries)++;
1541 ie= &entries[index];
1542 assert(index==0 || ie[-1].timestamp < timestamp);
1544 ie= &entries[index];
1545 if(ie->timestamp != timestamp){
1546 if(ie->timestamp <= timestamp)
1548 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1549 (*nb_index_entries)++;
1550 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1551 distance= ie->min_distance;
1555 ie->timestamp = timestamp;
1556 ie->min_distance= distance;
1563 int av_add_index_entry(AVStream *st,
1564 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1566 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1567 &st->index_entries_allocated_size, pos,
1568 timestamp, size, distance, flags);
1571 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1572 int64_t wanted_timestamp, int flags)
1580 //optimize appending index entries at the end
1581 if(b && entries[b-1].timestamp < wanted_timestamp)
1586 timestamp = entries[m].timestamp;
1587 if(timestamp >= wanted_timestamp)
1589 if(timestamp <= wanted_timestamp)
1592 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1594 if(!(flags & AVSEEK_FLAG_ANY)){
1595 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1596 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1605 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1608 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1609 wanted_timestamp, flags);
1612 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1614 AVInputFormat *avif= s->iformat;
1615 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1616 int64_t ts_min, ts_max, ts;
1621 if (stream_index < 0)
1624 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1627 ts_min= AV_NOPTS_VALUE;
1628 pos_limit= -1; //gcc falsely says it may be uninitialized
1630 st= s->streams[stream_index];
1631 if(st->index_entries){
1634 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()
1635 index= FFMAX(index, 0);
1636 e= &st->index_entries[index];
1638 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1640 ts_min= e->timestamp;
1641 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1647 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1648 assert(index < st->nb_index_entries);
1650 e= &st->index_entries[index];
1651 assert(e->timestamp >= target_ts);
1653 ts_max= e->timestamp;
1654 pos_limit= pos_max - e->min_distance;
1655 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1656 pos_max,pos_limit, ts_max);
1660 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1665 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1668 ff_read_frame_flush(s);
1669 ff_update_cur_dts(s, st, ts);
1674 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1675 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1676 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1677 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1680 int64_t start_pos, filesize;
1683 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1685 if(ts_min == AV_NOPTS_VALUE){
1686 pos_min = s->data_offset;
1687 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1688 if (ts_min == AV_NOPTS_VALUE)
1692 if(ts_min >= target_ts){
1697 if(ts_max == AV_NOPTS_VALUE){
1699 filesize = avio_size(s->pb);
1700 pos_max = filesize - 1;
1703 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1705 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1706 if (ts_max == AV_NOPTS_VALUE)
1710 int64_t tmp_pos= pos_max + 1;
1711 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1712 if(tmp_ts == AV_NOPTS_VALUE)
1716 if(tmp_pos >= filesize)
1722 if(ts_max <= target_ts){
1727 if(ts_min > ts_max){
1729 }else if(ts_min == ts_max){
1734 while (pos_min < pos_limit) {
1735 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1736 pos_min, pos_max, ts_min, ts_max);
1737 assert(pos_limit <= pos_max);
1740 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1741 // interpolate position (better than dichotomy)
1742 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1743 + pos_min - approximate_keyframe_distance;
1744 }else if(no_change==1){
1745 // bisection, if interpolation failed to change min or max pos last time
1746 pos = (pos_min + pos_limit)>>1;
1748 /* linear search if bisection failed, can only happen if there
1749 are very few or no keyframes between min/max */
1754 else if(pos > pos_limit)
1758 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1763 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1764 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1765 pos_limit, start_pos, no_change);
1766 if(ts == AV_NOPTS_VALUE){
1767 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1770 assert(ts != AV_NOPTS_VALUE);
1771 if (target_ts <= ts) {
1772 pos_limit = start_pos - 1;
1776 if (target_ts >= ts) {
1782 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1783 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1786 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1788 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1789 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1790 pos, ts_min, target_ts, ts_max);
1796 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1797 int64_t pos_min, pos_max;
1799 pos_min = s->data_offset;
1800 pos_max = avio_size(s->pb) - 1;
1802 if (pos < pos_min) pos= pos_min;
1803 else if(pos > pos_max) pos= pos_max;
1805 avio_seek(s->pb, pos, SEEK_SET);
1810 static int seek_frame_generic(AVFormatContext *s,
1811 int stream_index, int64_t timestamp, int flags)
1818 st = s->streams[stream_index];
1820 index = av_index_search_timestamp(st, timestamp, flags);
1822 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1825 if(index < 0 || index==st->nb_index_entries-1){
1829 if(st->nb_index_entries){
1830 assert(st->index_entries);
1831 ie= &st->index_entries[st->nb_index_entries-1];
1832 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1834 ff_update_cur_dts(s, st, ie->timestamp);
1836 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1842 read_status = av_read_frame(s, &pkt);
1843 } while (read_status == AVERROR(EAGAIN));
1844 if (read_status < 0)
1846 av_free_packet(&pkt);
1847 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1848 if(pkt.flags & AV_PKT_FLAG_KEY)
1850 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1851 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);
1856 index = av_index_search_timestamp(st, timestamp, flags);
1861 ff_read_frame_flush(s);
1862 AV_NOWARN_DEPRECATED(
1863 if (s->iformat->read_seek){
1864 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1868 ie = &st->index_entries[index];
1869 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1871 ff_update_cur_dts(s, st, ie->timestamp);
1876 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1877 int64_t timestamp, int flags)
1882 if (flags & AVSEEK_FLAG_BYTE) {
1883 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1885 ff_read_frame_flush(s);
1886 return seek_frame_byte(s, stream_index, timestamp, flags);
1889 if(stream_index < 0){
1890 stream_index= av_find_default_stream_index(s);
1891 if(stream_index < 0)
1894 st= s->streams[stream_index];
1895 /* timestamp for default must be expressed in AV_TIME_BASE units */
1896 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1899 /* first, we try the format specific seek */
1900 AV_NOWARN_DEPRECATED(
1901 if (s->iformat->read_seek) {
1902 ff_read_frame_flush(s);
1903 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1911 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1912 ff_read_frame_flush(s);
1913 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1914 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1915 ff_read_frame_flush(s);
1916 return seek_frame_generic(s, stream_index, timestamp, flags);
1922 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1924 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
1927 queue_attached_pictures(s);
1932 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1934 if(min_ts > ts || max_ts < ts)
1937 if (s->iformat->read_seek2) {
1939 ff_read_frame_flush(s);
1940 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1943 queue_attached_pictures(s);
1947 if(s->iformat->read_timestamp){
1948 //try to seek via read_timestamp()
1951 //Fallback to old API if new is not implemented but old is
1952 //Note the old has somewat different sematics
1953 AV_NOWARN_DEPRECATED(
1954 if (s->iformat->read_seek || 1) {
1955 int dir = (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0);
1956 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
1957 if (ret<0 && ts != min_ts && max_ts != ts) {
1958 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
1960 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
1966 // try some generic seek like seek_frame_generic() but with new ts semantics
1969 /*******************************************************/
1972 * Return TRUE if the stream has accurate duration in any stream.
1974 * @return TRUE if the stream has accurate duration for at least one component.
1976 static int has_duration(AVFormatContext *ic)
1981 for(i = 0;i < ic->nb_streams; i++) {
1982 st = ic->streams[i];
1983 if (st->duration != AV_NOPTS_VALUE)
1986 if (ic->duration != AV_NOPTS_VALUE)
1992 * Estimate the stream timings from the one of each components.
1994 * Also computes the global bitrate if possible.
1996 static void update_stream_timings(AVFormatContext *ic)
1998 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1999 int64_t duration, duration1, filesize;
2003 start_time = INT64_MAX;
2004 start_time_text = INT64_MAX;
2005 end_time = INT64_MIN;
2006 duration = INT64_MIN;
2007 for(i = 0;i < ic->nb_streams; i++) {
2008 st = ic->streams[i];
2009 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2010 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2011 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2012 if (start_time1 < start_time_text)
2013 start_time_text = start_time1;
2015 start_time = FFMIN(start_time, start_time1);
2016 if (st->duration != AV_NOPTS_VALUE) {
2017 end_time1 = start_time1
2018 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2019 end_time = FFMAX(end_time, end_time1);
2022 if (st->duration != AV_NOPTS_VALUE) {
2023 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2024 duration = FFMAX(duration, duration1);
2027 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2028 start_time = start_time_text;
2029 if (start_time != INT64_MAX) {
2030 ic->start_time = start_time;
2031 if (end_time != INT64_MIN)
2032 duration = FFMAX(duration, end_time - start_time);
2034 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2035 ic->duration = duration;
2037 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2038 /* compute the bitrate */
2039 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2040 (double)ic->duration;
2044 static void fill_all_stream_timings(AVFormatContext *ic)
2049 update_stream_timings(ic);
2050 for(i = 0;i < ic->nb_streams; i++) {
2051 st = ic->streams[i];
2052 if (st->start_time == AV_NOPTS_VALUE) {
2053 if(ic->start_time != AV_NOPTS_VALUE)
2054 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2055 if(ic->duration != AV_NOPTS_VALUE)
2056 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2061 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2063 int64_t filesize, duration;
2067 /* if bit_rate is already set, we believe it */
2068 if (ic->bit_rate <= 0) {
2070 for(i=0;i<ic->nb_streams;i++) {
2071 st = ic->streams[i];
2072 if (st->codec->bit_rate > 0)
2073 bit_rate += st->codec->bit_rate;
2075 ic->bit_rate = bit_rate;
2078 /* if duration is already set, we believe it */
2079 if (ic->duration == AV_NOPTS_VALUE &&
2080 ic->bit_rate != 0) {
2081 filesize = ic->pb ? avio_size(ic->pb) : 0;
2083 for(i = 0; i < ic->nb_streams; i++) {
2084 st = ic->streams[i];
2085 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2086 if (st->duration == AV_NOPTS_VALUE)
2087 st->duration = duration;
2093 #define DURATION_MAX_READ_SIZE 250000
2094 #define DURATION_MAX_RETRY 3
2096 /* only usable for MPEG-PS streams */
2097 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2099 AVPacket pkt1, *pkt = &pkt1;
2101 int read_size, i, ret;
2103 int64_t filesize, offset, duration;
2106 /* flush packet queue */
2107 flush_packet_queue(ic);
2109 for (i=0; i<ic->nb_streams; i++) {
2110 st = ic->streams[i];
2111 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2112 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2115 av_parser_close(st->parser);
2120 /* estimate the end time (duration) */
2121 /* XXX: may need to support wrapping */
2122 filesize = ic->pb ? avio_size(ic->pb) : 0;
2123 end_time = AV_NOPTS_VALUE;
2125 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2129 avio_seek(ic->pb, offset, SEEK_SET);
2132 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2136 ret = ff_read_packet(ic, pkt);
2137 } while(ret == AVERROR(EAGAIN));
2140 read_size += pkt->size;
2141 st = ic->streams[pkt->stream_index];
2142 if (pkt->pts != AV_NOPTS_VALUE &&
2143 (st->start_time != AV_NOPTS_VALUE ||
2144 st->first_dts != AV_NOPTS_VALUE)) {
2145 duration = end_time = pkt->pts;
2146 if (st->start_time != AV_NOPTS_VALUE)
2147 duration -= st->start_time;
2149 duration -= st->first_dts;
2151 duration += 1LL<<st->pts_wrap_bits;
2153 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2154 st->duration = duration;
2157 av_free_packet(pkt);
2159 }while( end_time==AV_NOPTS_VALUE
2160 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2161 && ++retry <= DURATION_MAX_RETRY);
2163 fill_all_stream_timings(ic);
2165 avio_seek(ic->pb, old_offset, SEEK_SET);
2166 for (i=0; i<ic->nb_streams; i++) {
2168 st->cur_dts= st->first_dts;
2169 st->last_IP_pts = AV_NOPTS_VALUE;
2170 st->reference_dts = AV_NOPTS_VALUE;
2174 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2178 /* get the file size, if possible */
2179 if (ic->iformat->flags & AVFMT_NOFILE) {
2182 file_size = avio_size(ic->pb);
2183 file_size = FFMAX(0, file_size);
2186 if ((!strcmp(ic->iformat->name, "mpeg") ||
2187 !strcmp(ic->iformat->name, "mpegts")) &&
2188 file_size && ic->pb->seekable) {
2189 /* get accurate estimate from the PTSes */
2190 estimate_timings_from_pts(ic, old_offset);
2191 } else if (has_duration(ic)) {
2192 /* at least one component has timings - we use them for all
2194 fill_all_stream_timings(ic);
2196 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2197 /* less precise: use bitrate info */
2198 estimate_timings_from_bit_rate(ic);
2200 update_stream_timings(ic);
2204 AVStream av_unused *st;
2205 for(i = 0;i < ic->nb_streams; i++) {
2206 st = ic->streams[i];
2207 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2208 (double) st->start_time / AV_TIME_BASE,
2209 (double) st->duration / AV_TIME_BASE);
2211 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2212 (double) ic->start_time / AV_TIME_BASE,
2213 (double) ic->duration / AV_TIME_BASE,
2214 ic->bit_rate / 1000);
2218 static int has_codec_parameters(AVStream *st)
2220 AVCodecContext *avctx = st->codec;
2222 switch (avctx->codec_type) {
2223 case AVMEDIA_TYPE_AUDIO:
2224 val = avctx->sample_rate && avctx->channels;
2225 if (!avctx->frame_size && determinable_frame_size(avctx))
2227 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2230 case AVMEDIA_TYPE_VIDEO:
2232 if (st->info->found_decoder >= 0 && avctx->pix_fmt == PIX_FMT_NONE)
2235 case AVMEDIA_TYPE_DATA:
2236 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2241 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2244 static int has_decode_delay_been_guessed(AVStream *st)
2246 return st->codec->codec_id != CODEC_ID_H264 ||
2247 st->info->nb_decoded_frames >= 6;
2250 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2251 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2254 int got_picture = 1, ret = 0;
2256 AVPacket pkt = *avpkt;
2258 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2259 AVDictionary *thread_opt = NULL;
2261 codec = st->codec->codec ? st->codec->codec :
2262 avcodec_find_decoder(st->codec->codec_id);
2265 st->info->found_decoder = -1;
2269 /* force thread count to 1 since the h264 decoder will not extract SPS
2270 * and PPS to extradata during multi-threaded decoding */
2271 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2272 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2274 av_dict_free(&thread_opt);
2276 st->info->found_decoder = -1;
2279 st->info->found_decoder = 1;
2280 } else if (!st->info->found_decoder)
2281 st->info->found_decoder = 1;
2283 if (st->info->found_decoder < 0)
2286 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2288 (!has_codec_parameters(st) ||
2289 !has_decode_delay_been_guessed(st) ||
2290 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2292 avcodec_get_frame_defaults(&picture);
2293 switch(st->codec->codec_type) {
2294 case AVMEDIA_TYPE_VIDEO:
2295 ret = avcodec_decode_video2(st->codec, &picture,
2296 &got_picture, &pkt);
2298 case AVMEDIA_TYPE_AUDIO:
2299 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2306 st->info->nb_decoded_frames++;
2312 if(!pkt.data && !got_picture)
2317 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2319 while (tags->id != CODEC_ID_NONE) {
2327 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2330 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2331 if(tag == tags[i].tag)
2334 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2335 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2338 return CODEC_ID_NONE;
2341 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2344 for(i=0; tags && tags[i]; i++){
2345 int tag= ff_codec_get_tag(tags[i], id);
2351 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2354 for(i=0; tags && tags[i]; i++){
2355 enum CodecID id= ff_codec_get_id(tags[i], tag);
2356 if(id!=CODEC_ID_NONE) return id;
2358 return CODEC_ID_NONE;
2361 static void compute_chapters_end(AVFormatContext *s)
2364 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2366 for (i = 0; i < s->nb_chapters; i++)
2367 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2368 AVChapter *ch = s->chapters[i];
2369 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2372 for (j = 0; j < s->nb_chapters; j++) {
2373 AVChapter *ch1 = s->chapters[j];
2374 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2375 if (j != i && next_start > ch->start && next_start < end)
2378 ch->end = (end == INT64_MAX) ? ch->start : end;
2382 static int get_std_framerate(int i){
2383 if(i<60*12) return i*1001;
2384 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2388 * Is the time base unreliable.
2389 * This is a heuristic to balance between quick acceptance of the values in
2390 * the headers vs. some extra checks.
2391 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2392 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2393 * And there are "variable" fps files this needs to detect as well.
2395 static int tb_unreliable(AVCodecContext *c){
2396 if( c->time_base.den >= 101L*c->time_base.num
2397 || c->time_base.den < 5L*c->time_base.num
2398 /* || c->codec_tag == AV_RL32("DIVX")
2399 || c->codec_tag == AV_RL32("XVID")*/
2400 || c->codec_id == CODEC_ID_MPEG2VIDEO
2401 || c->codec_id == CODEC_ID_H264
2407 #if FF_API_FORMAT_PARAMETERS
2408 int av_find_stream_info(AVFormatContext *ic)
2410 return avformat_find_stream_info(ic, NULL);
2414 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2416 int i, count, ret, read_size, j;
2418 AVPacket pkt1, *pkt;
2419 int64_t old_offset = avio_tell(ic->pb);
2420 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2421 int flush_codecs = 1;
2424 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2426 for(i=0;i<ic->nb_streams;i++) {
2428 AVDictionary *thread_opt = NULL;
2429 st = ic->streams[i];
2431 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2432 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2433 /* if(!st->time_base.num)
2435 if(!st->codec->time_base.num)
2436 st->codec->time_base= st->time_base;
2438 //only for the split stuff
2439 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2440 st->parser = av_parser_init(st->codec->codec_id);
2441 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2442 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2445 codec = st->codec->codec ? st->codec->codec :
2446 avcodec_find_decoder(st->codec->codec_id);
2448 /* force thread count to 1 since the h264 decoder will not extract SPS
2449 * and PPS to extradata during multi-threaded decoding */
2450 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2452 /* Ensure that subtitle_header is properly set. */
2453 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2454 && codec && !st->codec->codec)
2455 avcodec_open2(st->codec, codec, options ? &options[i]
2458 //try to just open decoders, in case this is enough to get parameters
2459 if (!has_codec_parameters(st)) {
2460 if (codec && !st->codec->codec)
2461 avcodec_open2(st->codec, codec, options ? &options[i]
2465 av_dict_free(&thread_opt);
2468 for (i=0; i<ic->nb_streams; i++) {
2469 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2475 if (ff_check_interrupt(&ic->interrupt_callback)){
2477 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2481 /* check if one codec still needs to be handled */
2482 for(i=0;i<ic->nb_streams;i++) {
2483 int fps_analyze_framecount = 20;
2485 st = ic->streams[i];
2486 if (!has_codec_parameters(st))
2488 /* if the timebase is coarse (like the usual millisecond precision
2489 of mkv), we need to analyze more frames to reliably arrive at
2491 if (av_q2d(st->time_base) > 0.0005)
2492 fps_analyze_framecount *= 2;
2493 if (ic->fps_probe_size >= 0)
2494 fps_analyze_framecount = ic->fps_probe_size;
2495 /* variable fps and no guess at the real fps */
2496 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2497 && st->info->duration_count < fps_analyze_framecount
2498 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2500 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2502 if (st->first_dts == AV_NOPTS_VALUE &&
2503 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2504 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2507 if (i == ic->nb_streams) {
2508 /* NOTE: if the format has no header, then we need to read
2509 some packets to get most of the streams, so we cannot
2511 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2512 /* if we found the info for all the codecs, we can stop */
2514 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2519 /* we did not get all the codec info, but we read too much data */
2520 if (read_size >= ic->probesize) {
2522 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2523 for (i = 0; i < ic->nb_streams; i++)
2524 if (!ic->streams[i]->r_frame_rate.num &&
2525 ic->streams[i]->info->duration_count <= 1)
2526 av_log(ic, AV_LOG_WARNING,
2527 "Stream #%d: not enough frames to estimate rate; "
2528 "consider increasing probesize\n", i);
2532 /* NOTE: a new stream can be added there if no header in file
2533 (AVFMTCTX_NOHEADER) */
2534 ret = read_frame_internal(ic, &pkt1);
2535 if (ret == AVERROR(EAGAIN))
2543 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2544 if ((ret = av_dup_packet(pkt)) < 0)
2545 goto find_stream_info_err;
2547 read_size += pkt->size;
2549 st = ic->streams[pkt->stream_index];
2550 if (st->codec_info_nb_frames>1) {
2552 if (st->time_base.den > 0)
2553 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2554 if (st->avg_frame_rate.num > 0)
2555 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, (AVRational){st->avg_frame_rate.den, st->avg_frame_rate.num}, AV_TIME_BASE_Q));
2557 if (t >= ic->max_analyze_duration) {
2558 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2561 st->info->codec_info_duration += pkt->duration;
2564 int64_t last = st->info->last_dts;
2566 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2567 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2568 int64_t duration= pkt->dts - last;
2570 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2571 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2572 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2573 int framerate= get_std_framerate(i);
2574 double sdts= dts*framerate/(1001*12);
2576 int ticks= lrintf(sdts+j*0.5);
2577 double error= sdts - ticks + j*0.5;
2578 st->info->duration_error[j][0][i] += error;
2579 st->info->duration_error[j][1][i] += error*error;
2582 st->info->duration_count++;
2583 // ignore the first 4 values, they might have some random jitter
2584 if (st->info->duration_count > 3)
2585 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2587 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2588 st->info->last_dts = pkt->dts;
2590 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2591 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2592 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2593 st->codec->extradata_size= i;
2594 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2595 if (!st->codec->extradata)
2596 return AVERROR(ENOMEM);
2597 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2598 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2602 /* if still no information, we try to open the codec and to
2603 decompress the frame. We try to avoid that in most cases as
2604 it takes longer and uses more memory. For MPEG-4, we need to
2605 decompress for QuickTime.
2607 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2608 least one frame of codec data, this makes sure the codec initializes
2609 the channel configuration and does not only trust the values from the container.
2611 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2613 st->codec_info_nb_frames++;
2618 AVPacket empty_pkt = { 0 };
2620 av_init_packet(&empty_pkt);
2622 ret = -1; /* we could not have all the codec parameters before EOF */
2623 for(i=0;i<ic->nb_streams;i++) {
2624 st = ic->streams[i];
2626 /* flush the decoders */
2627 if (st->info->found_decoder == 1) {
2629 err = try_decode_frame(st, &empty_pkt,
2630 (options && i < orig_nb_streams) ?
2631 &options[i] : NULL);
2632 } while (err > 0 && !has_codec_parameters(st));
2635 av_log(ic, AV_LOG_INFO,
2636 "decoding for stream %d failed\n", st->index);
2640 if (!has_codec_parameters(st)){
2642 avcodec_string(buf, sizeof(buf), st->codec, 0);
2643 av_log(ic, AV_LOG_WARNING,
2644 "Could not find codec parameters (%s)\n", buf);
2651 // close codecs which were opened in try_decode_frame()
2652 for(i=0;i<ic->nb_streams;i++) {
2653 st = ic->streams[i];
2654 avcodec_close(st->codec);
2656 for(i=0;i<ic->nb_streams;i++) {
2657 st = ic->streams[i];
2658 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2659 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2660 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2661 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2662 st->codec->codec_tag= tag;
2665 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2666 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2667 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2668 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2669 // the check for tb_unreliable() is not completely correct, since this is not about handling
2670 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2671 // ipmovie.c produces.
2672 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)
2673 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);
2674 if (st->info->duration_count && !st->r_frame_rate.num
2675 && tb_unreliable(st->codec) /*&&
2676 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2677 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2679 double best_error= 0.01;
2681 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2684 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2686 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2689 int n= st->info->duration_count;
2690 double a= st->info->duration_error[k][0][j] / n;
2691 double error= st->info->duration_error[k][1][j]/n - a*a;
2693 if(error < best_error && best_error> 0.000000001){
2695 num = get_std_framerate(j);
2698 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2701 // do not increase frame rate by more than 1 % in order to match a standard rate.
2702 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2703 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2706 if (!st->r_frame_rate.num){
2707 if( st->codec->time_base.den * (int64_t)st->time_base.num
2708 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2709 st->r_frame_rate.num = st->codec->time_base.den;
2710 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2712 st->r_frame_rate.num = st->time_base.den;
2713 st->r_frame_rate.den = st->time_base.num;
2716 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2717 if(!st->codec->bits_per_coded_sample)
2718 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2719 // set stream disposition based on audio service type
2720 switch (st->codec->audio_service_type) {
2721 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2722 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2723 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2724 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2725 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2726 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2727 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2728 st->disposition = AV_DISPOSITION_COMMENT; break;
2729 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2730 st->disposition = AV_DISPOSITION_KARAOKE; break;
2735 estimate_timings(ic, old_offset);
2737 compute_chapters_end(ic);
2739 find_stream_info_err:
2740 for (i=0; i < ic->nb_streams; i++) {
2741 if (ic->streams[i]->codec)
2742 ic->streams[i]->codec->thread_count = 0;
2743 av_freep(&ic->streams[i]->info);
2746 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2750 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2754 for (i = 0; i < ic->nb_programs; i++) {
2755 if (ic->programs[i] == last) {
2759 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2760 if (ic->programs[i]->stream_index[j] == s)
2761 return ic->programs[i];
2767 int av_find_best_stream(AVFormatContext *ic,
2768 enum AVMediaType type,
2769 int wanted_stream_nb,
2771 AVCodec **decoder_ret,
2774 int i, nb_streams = ic->nb_streams;
2775 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2776 unsigned *program = NULL;
2777 AVCodec *decoder = NULL, *best_decoder = NULL;
2779 if (related_stream >= 0 && wanted_stream_nb < 0) {
2780 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2782 program = p->stream_index;
2783 nb_streams = p->nb_stream_indexes;
2786 for (i = 0; i < nb_streams; i++) {
2787 int real_stream_index = program ? program[i] : i;
2788 AVStream *st = ic->streams[real_stream_index];
2789 AVCodecContext *avctx = st->codec;
2790 if (avctx->codec_type != type)
2792 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2794 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2797 decoder = avcodec_find_decoder(st->codec->codec_id);
2800 ret = AVERROR_DECODER_NOT_FOUND;
2804 if (best_count >= st->codec_info_nb_frames)
2806 best_count = st->codec_info_nb_frames;
2807 ret = real_stream_index;
2808 best_decoder = decoder;
2809 if (program && i == nb_streams - 1 && ret < 0) {
2811 nb_streams = ic->nb_streams;
2812 i = 0; /* no related stream found, try again with everything */
2816 *decoder_ret = best_decoder;
2820 /*******************************************************/
2822 int av_read_play(AVFormatContext *s)
2824 if (s->iformat->read_play)
2825 return s->iformat->read_play(s);
2827 return avio_pause(s->pb, 0);
2828 return AVERROR(ENOSYS);
2831 int av_read_pause(AVFormatContext *s)
2833 if (s->iformat->read_pause)
2834 return s->iformat->read_pause(s);
2836 return avio_pause(s->pb, 1);
2837 return AVERROR(ENOSYS);
2840 void avformat_free_context(AVFormatContext *s)
2846 if (s->iformat && s->iformat->priv_class && s->priv_data)
2847 av_opt_free(s->priv_data);
2849 for(i=0;i<s->nb_streams;i++) {
2850 /* free all data in a stream component */
2853 av_parser_close(st->parser);
2855 if (st->attached_pic.data)
2856 av_free_packet(&st->attached_pic);
2857 av_dict_free(&st->metadata);
2858 av_freep(&st->index_entries);
2859 av_freep(&st->codec->extradata);
2860 av_freep(&st->codec->subtitle_header);
2861 av_freep(&st->codec);
2862 av_freep(&st->priv_data);
2863 av_freep(&st->info);
2866 for(i=s->nb_programs-1; i>=0; i--) {
2867 av_dict_free(&s->programs[i]->metadata);
2868 av_freep(&s->programs[i]->stream_index);
2869 av_freep(&s->programs[i]);
2871 av_freep(&s->programs);
2872 av_freep(&s->priv_data);
2873 while(s->nb_chapters--) {
2874 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2875 av_freep(&s->chapters[s->nb_chapters]);
2877 av_freep(&s->chapters);
2878 av_dict_free(&s->metadata);
2879 av_freep(&s->streams);
2883 #if FF_API_CLOSE_INPUT_FILE
2884 void av_close_input_file(AVFormatContext *s)
2886 avformat_close_input(&s);
2890 void avformat_close_input(AVFormatContext **ps)
2892 AVFormatContext *s = *ps;
2893 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2895 flush_packet_queue(s);
2896 if (s->iformat && (s->iformat->read_close))
2897 s->iformat->read_close(s);
2898 avformat_free_context(s);
2904 #if FF_API_NEW_STREAM
2905 AVStream *av_new_stream(AVFormatContext *s, int id)
2907 AVStream *st = avformat_new_stream(s, NULL);
2914 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2920 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2922 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2925 s->streams = streams;
2927 st = av_mallocz(sizeof(AVStream));
2930 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2934 st->info->last_dts = AV_NOPTS_VALUE;
2936 st->codec = avcodec_alloc_context3(c);
2938 /* no default bitrate if decoding */
2939 st->codec->bit_rate = 0;
2941 st->index = s->nb_streams;
2942 st->start_time = AV_NOPTS_VALUE;
2943 st->duration = AV_NOPTS_VALUE;
2944 /* we set the current DTS to 0 so that formats without any timestamps
2945 but durations get some timestamps, formats with some unknown
2946 timestamps have their first few packets buffered and the
2947 timestamps corrected before they are returned to the user */
2948 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
2949 st->first_dts = AV_NOPTS_VALUE;
2950 st->probe_packets = MAX_PROBE_PACKETS;
2952 /* default pts setting is MPEG-like */
2953 avpriv_set_pts_info(st, 33, 1, 90000);
2954 st->last_IP_pts = AV_NOPTS_VALUE;
2955 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2956 st->pts_buffer[i]= AV_NOPTS_VALUE;
2957 st->reference_dts = AV_NOPTS_VALUE;
2959 st->sample_aspect_ratio = (AVRational){0,1};
2961 s->streams[s->nb_streams++] = st;
2965 AVProgram *av_new_program(AVFormatContext *ac, int id)
2967 AVProgram *program=NULL;
2970 av_dlog(ac, "new_program: id=0x%04x\n", id);
2972 for(i=0; i<ac->nb_programs; i++)
2973 if(ac->programs[i]->id == id)
2974 program = ac->programs[i];
2977 program = av_mallocz(sizeof(AVProgram));
2980 dynarray_add(&ac->programs, &ac->nb_programs, program);
2981 program->discard = AVDISCARD_NONE;
2988 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2990 AVChapter *chapter = NULL;
2993 for(i=0; i<s->nb_chapters; i++)
2994 if(s->chapters[i]->id == id)
2995 chapter = s->chapters[i];
2998 chapter= av_mallocz(sizeof(AVChapter));
3001 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3003 av_dict_set(&chapter->metadata, "title", title, 0);
3005 chapter->time_base= time_base;
3006 chapter->start = start;
3012 /************************************************************/
3013 /* output media file */
3015 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3016 const char *format, const char *filename)
3018 AVFormatContext *s = avformat_alloc_context();
3027 oformat = av_guess_format(format, NULL, NULL);
3029 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3030 ret = AVERROR(EINVAL);
3034 oformat = av_guess_format(NULL, filename, NULL);
3036 ret = AVERROR(EINVAL);
3037 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3044 s->oformat = oformat;
3045 if (s->oformat->priv_data_size > 0) {
3046 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3049 if (s->oformat->priv_class) {
3050 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3051 av_opt_set_defaults(s->priv_data);
3054 s->priv_data = NULL;
3057 av_strlcpy(s->filename, filename, sizeof(s->filename));
3061 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3062 ret = AVERROR(ENOMEM);
3064 avformat_free_context(s);
3068 #if FF_API_ALLOC_OUTPUT_CONTEXT
3069 AVFormatContext *avformat_alloc_output_context(const char *format,
3070 AVOutputFormat *oformat, const char *filename)
3072 AVFormatContext *avctx;
3073 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3074 return ret < 0 ? NULL : avctx;
3078 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3080 const AVCodecTag *avctag;
3082 enum CodecID id = CODEC_ID_NONE;
3083 unsigned int tag = 0;
3086 * Check that tag + id is in the table
3087 * If neither is in the table -> OK
3088 * If tag is in the table with another id -> FAIL
3089 * If id is in the table with another tag -> FAIL unless strict < normal
3091 for (n = 0; s->oformat->codec_tag[n]; n++) {
3092 avctag = s->oformat->codec_tag[n];
3093 while (avctag->id != CODEC_ID_NONE) {
3094 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3096 if (id == st->codec->codec_id)
3099 if (avctag->id == st->codec->codec_id)
3104 if (id != CODEC_ID_NONE)
3106 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3111 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3115 AVDictionary *tmp = NULL;
3118 av_dict_copy(&tmp, *options, 0);
3119 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3121 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3122 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3125 // some sanity checks
3126 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3127 av_log(s, AV_LOG_ERROR, "no streams\n");
3128 ret = AVERROR(EINVAL);
3132 for(i=0;i<s->nb_streams;i++) {
3135 switch (st->codec->codec_type) {
3136 case AVMEDIA_TYPE_AUDIO:
3137 if(st->codec->sample_rate<=0){
3138 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3139 ret = AVERROR(EINVAL);
3142 if(!st->codec->block_align)
3143 st->codec->block_align = st->codec->channels *
3144 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3146 case AVMEDIA_TYPE_VIDEO:
3147 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3148 av_log(s, AV_LOG_ERROR, "time base not set\n");
3149 ret = AVERROR(EINVAL);
3152 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3153 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3154 ret = AVERROR(EINVAL);
3157 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3158 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3160 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
3161 "(%d/%d) and encoder layer (%d/%d)\n",
3162 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3163 st->codec->sample_aspect_ratio.num,
3164 st->codec->sample_aspect_ratio.den);
3165 ret = AVERROR(EINVAL);
3171 if(s->oformat->codec_tag){
3172 if(st->codec->codec_tag && st->codec->codec_id == CODEC_ID_RAWVIDEO && av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id) == 0 && !validate_codec_tag(s, st)){
3173 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3174 st->codec->codec_tag= 0;
3176 if(st->codec->codec_tag){
3177 if (!validate_codec_tag(s, st)) {
3179 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3180 av_log(s, AV_LOG_ERROR,
3181 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3182 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3183 ret = AVERROR_INVALIDDATA;
3187 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3190 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3191 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3192 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3195 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3196 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3197 if (!s->priv_data) {
3198 ret = AVERROR(ENOMEM);
3201 if (s->oformat->priv_class) {
3202 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3203 av_opt_set_defaults(s->priv_data);
3204 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3209 /* set muxer identification string */
3210 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3211 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3214 if(s->oformat->write_header){
3215 ret = s->oformat->write_header(s);
3220 /* init PTS generation */
3221 for(i=0;i<s->nb_streams;i++) {
3222 int64_t den = AV_NOPTS_VALUE;
3225 switch (st->codec->codec_type) {
3226 case AVMEDIA_TYPE_AUDIO:
3227 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3229 case AVMEDIA_TYPE_VIDEO:
3230 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3235 if (den != AV_NOPTS_VALUE) {
3237 ret = AVERROR_INVALIDDATA;
3240 frac_init(&st->pts, 0, 0, den);
3245 av_dict_free(options);
3254 //FIXME merge with compute_pkt_fields
3255 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3256 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3257 int num, den, frame_size, i;
3259 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3260 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3262 /* duration field */
3263 if (pkt->duration == 0) {
3264 compute_frame_duration(&num, &den, st, NULL, pkt);
3266 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3270 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3273 //XXX/FIXME this is a temporary hack until all encoders output pts
3274 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3277 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
3281 // pkt->pts= st->cur_dts;
3282 pkt->pts= st->pts.val;
3285 //calculate dts from pts
3286 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3287 st->pts_buffer[0]= pkt->pts;
3288 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3289 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3290 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3291 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3293 pkt->dts= st->pts_buffer[0];
3296 if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)){
3297 av_log(s, AV_LOG_ERROR,
3298 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3299 st->index, st->cur_dts, pkt->dts);
3300 return AVERROR(EINVAL);
3302 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3303 av_log(s, AV_LOG_ERROR, "pts (%"PRId64") < dts (%"PRId64") in stream %d\n", pkt->pts, pkt->dts, st->index);
3304 return AVERROR(EINVAL);
3307 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3308 st->cur_dts= pkt->dts;
3309 st->pts.val= pkt->dts;
3312 switch (st->codec->codec_type) {
3313 case AVMEDIA_TYPE_AUDIO:
3314 frame_size = get_audio_frame_size(st->codec, pkt->size, 1);
3316 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3317 likely equal to the encoder delay, but it would be better if we
3318 had the real timestamps from the encoder */
3319 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3320 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3323 case AVMEDIA_TYPE_VIDEO:
3324 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3332 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3337 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3338 return s->oformat->write_packet(s, pkt);
3342 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3344 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3347 ret= s->oformat->write_packet(s, pkt);
3350 s->streams[pkt->stream_index]->nb_frames++;
3354 #define CHUNK_START 0x1000
3356 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3357 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3359 AVPacketList **next_point, *this_pktl;
3360 AVStream *st= s->streams[pkt->stream_index];
3361 int chunked= s->max_chunk_size || s->max_chunk_duration;
3363 this_pktl = av_mallocz(sizeof(AVPacketList));
3365 return AVERROR(ENOMEM);
3366 this_pktl->pkt= *pkt;
3367 pkt->destruct= NULL; // do not free original but only the copy
3368 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3370 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3371 next_point = &(st->last_in_packet_buffer->next);
3373 next_point = &s->packet_buffer;
3378 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3379 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3380 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3381 st->interleaver_chunk_size += pkt->size;
3382 st->interleaver_chunk_duration += pkt->duration;
3385 st->interleaver_chunk_size =
3386 st->interleaver_chunk_duration = 0;
3387 this_pktl->pkt.flags |= CHUNK_START;
3391 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3393 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3394 || !compare(s, &(*next_point)->pkt, pkt))){
3395 next_point= &(*next_point)->next;
3400 next_point = &(s->packet_buffer_end->next);
3403 assert(!*next_point);
3405 s->packet_buffer_end= this_pktl;
3408 this_pktl->next= *next_point;
3410 s->streams[pkt->stream_index]->last_in_packet_buffer=
3411 *next_point= this_pktl;
3415 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3417 AVStream *st = s->streams[ pkt ->stream_index];
3418 AVStream *st2= s->streams[ next->stream_index];
3419 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3421 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3422 int64_t ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st ->codec->codec_type == AVMEDIA_TYPE_AUDIO);
3423 int64_t ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st2->codec->codec_type == AVMEDIA_TYPE_AUDIO);
3425 ts= ( pkt ->dts* st->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st ->codec->codec_type == AVMEDIA_TYPE_AUDIO)* st->time_base.den)*st2->time_base.den
3426 -( next->dts*st2->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st2->codec->codec_type == AVMEDIA_TYPE_AUDIO)*st2->time_base.den)* st->time_base.den;
3429 comp= (ts>ts2) - (ts<ts2);
3433 return pkt->stream_index < next->stream_index;
3437 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3438 AVPacket *pkt, int flush)
3441 int stream_count=0, noninterleaved_count=0;
3442 int64_t delta_dts_max = 0;
3446 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3451 for(i=0; i < s->nb_streams; i++) {
3452 if (s->streams[i]->last_in_packet_buffer) {
3454 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3455 ++noninterleaved_count;
3459 if (s->nb_streams == stream_count) {
3462 for(i=0; i < s->nb_streams; i++) {
3463 if (s->streams[i]->last_in_packet_buffer) {
3465 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3466 s->streams[i]->time_base,
3468 av_rescale_q(s->packet_buffer->pkt.dts,
3469 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3471 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3474 if(s->nb_streams == stream_count+noninterleaved_count &&
3475 delta_dts_max > 20*AV_TIME_BASE) {
3476 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3480 if(stream_count && flush){
3481 pktl= s->packet_buffer;
3484 s->packet_buffer= pktl->next;
3485 if(!s->packet_buffer)
3486 s->packet_buffer_end= NULL;
3488 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3489 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3493 av_init_packet(out);
3498 #if FF_API_INTERLEAVE_PACKET
3499 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3500 AVPacket *pkt, int flush)
3502 return ff_interleave_packet_per_dts(s, out, pkt, flush);
3507 * Interleave an AVPacket correctly so it can be muxed.
3508 * @param out the interleaved packet will be output here
3509 * @param in the input packet
3510 * @param flush 1 if no further packets are available as input and all
3511 * remaining packets should be output
3512 * @return 1 if a packet was output, 0 if no packet could be output,
3513 * < 0 if an error occurred
3515 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3516 if (s->oformat->interleave_packet) {
3517 int ret = s->oformat->interleave_packet(s, out, in, flush);
3522 return ff_interleave_packet_per_dts(s, out, in, flush);
3525 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3529 AVStream *st= s->streams[ pkt->stream_index];
3531 //FIXME/XXX/HACK drop zero sized packets
3532 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3535 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3536 pkt->size, pkt->dts, pkt->pts);
3537 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3540 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3541 return AVERROR(EINVAL);
3543 av_dlog(s, "av_interleaved_write_frame FLUSH\n");
3549 int ret= interleave_packet(s, &opkt, pkt, flush);
3550 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3553 ret= s->oformat->write_packet(s, &opkt);
3555 s->streams[opkt.stream_index]->nb_frames++;
3557 av_free_packet(&opkt);
3562 if(s->pb && s->pb->error)
3563 return s->pb->error;
3567 int av_write_trailer(AVFormatContext *s)
3573 ret= interleave_packet(s, &pkt, NULL, 1);
3574 if(ret<0) //FIXME cleanup needed for ret<0 ?
3579 ret= s->oformat->write_packet(s, &pkt);
3581 s->streams[pkt.stream_index]->nb_frames++;
3583 av_free_packet(&pkt);
3587 if(s->pb && s->pb->error)
3591 if(s->oformat->write_trailer)
3592 ret = s->oformat->write_trailer(s);
3597 ret = s->pb ? s->pb->error : 0;
3598 for(i=0;i<s->nb_streams;i++) {
3599 av_freep(&s->streams[i]->priv_data);
3600 av_freep(&s->streams[i]->index_entries);
3602 if (s->oformat->priv_class)
3603 av_opt_free(s->priv_data);
3604 av_freep(&s->priv_data);
3608 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3609 int64_t *dts, int64_t *wall)
3611 if (!s->oformat || !s->oformat->get_output_timestamp)
3612 return AVERROR(ENOSYS);
3613 s->oformat->get_output_timestamp(s, stream, dts, wall);
3617 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3620 AVProgram *program=NULL;
3623 if (idx >= ac->nb_streams) {
3624 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3628 for(i=0; i<ac->nb_programs; i++){
3629 if(ac->programs[i]->id != progid)
3631 program = ac->programs[i];
3632 for(j=0; j<program->nb_stream_indexes; j++)
3633 if(program->stream_index[j] == idx)
3636 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3639 program->stream_index = tmp;
3640 program->stream_index[program->nb_stream_indexes++] = idx;
3645 static void print_fps(double d, const char *postfix){
3646 uint64_t v= lrintf(d*100);
3647 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3648 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3649 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3652 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3654 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3655 AVDictionaryEntry *tag=NULL;
3657 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3658 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3659 if(strcmp("language", tag->key)){
3660 const char *p = tag->value;
3661 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3664 size_t len = strcspn(p, "\xd\xa");
3665 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3666 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3668 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3669 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3672 av_log(ctx, AV_LOG_INFO, "\n");
3678 /* "user interface" functions */
3679 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3682 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3683 AVStream *st = ic->streams[i];
3684 int g = av_gcd(st->time_base.num, st->time_base.den);
3685 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3686 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3687 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3688 /* the pid is an important information, so we display it */
3689 /* XXX: add a generic system */
3690 if (flags & AVFMT_SHOW_IDS)
3691 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3693 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3694 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3695 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3696 if (st->sample_aspect_ratio.num && // default
3697 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3698 AVRational display_aspect_ratio;
3699 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3700 st->codec->width*st->sample_aspect_ratio.num,
3701 st->codec->height*st->sample_aspect_ratio.den,
3703 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3704 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3705 display_aspect_ratio.num, display_aspect_ratio.den);
3707 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3708 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3709 print_fps(av_q2d(st->avg_frame_rate), "fps");
3710 if(st->r_frame_rate.den && st->r_frame_rate.num)
3711 print_fps(av_q2d(st->r_frame_rate), "tbr");
3712 if(st->time_base.den && st->time_base.num)
3713 print_fps(1/av_q2d(st->time_base), "tbn");
3714 if(st->codec->time_base.den && st->codec->time_base.num)
3715 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3717 if (st->disposition & AV_DISPOSITION_DEFAULT)
3718 av_log(NULL, AV_LOG_INFO, " (default)");
3719 if (st->disposition & AV_DISPOSITION_DUB)
3720 av_log(NULL, AV_LOG_INFO, " (dub)");
3721 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3722 av_log(NULL, AV_LOG_INFO, " (original)");
3723 if (st->disposition & AV_DISPOSITION_COMMENT)
3724 av_log(NULL, AV_LOG_INFO, " (comment)");
3725 if (st->disposition & AV_DISPOSITION_LYRICS)
3726 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3727 if (st->disposition & AV_DISPOSITION_KARAOKE)
3728 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3729 if (st->disposition & AV_DISPOSITION_FORCED)
3730 av_log(NULL, AV_LOG_INFO, " (forced)");
3731 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3732 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3733 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3734 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3735 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3736 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3737 av_log(NULL, AV_LOG_INFO, "\n");
3738 dump_metadata(NULL, st->metadata, " ");
3741 void av_dump_format(AVFormatContext *ic,
3747 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3748 if (ic->nb_streams && !printed)
3751 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3752 is_output ? "Output" : "Input",
3754 is_output ? ic->oformat->name : ic->iformat->name,
3755 is_output ? "to" : "from", url);
3756 dump_metadata(NULL, ic->metadata, " ");
3758 av_log(NULL, AV_LOG_INFO, " Duration: ");
3759 if (ic->duration != AV_NOPTS_VALUE) {
3760 int hours, mins, secs, us;
3761 secs = ic->duration / AV_TIME_BASE;
3762 us = ic->duration % AV_TIME_BASE;
3767 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3768 (100 * us) / AV_TIME_BASE);
3770 av_log(NULL, AV_LOG_INFO, "N/A");
3772 if (ic->start_time != AV_NOPTS_VALUE) {
3774 av_log(NULL, AV_LOG_INFO, ", start: ");
3775 secs = ic->start_time / AV_TIME_BASE;
3776 us = abs(ic->start_time % AV_TIME_BASE);
3777 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3778 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3780 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3782 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3784 av_log(NULL, AV_LOG_INFO, "N/A");
3786 av_log(NULL, AV_LOG_INFO, "\n");
3788 for (i = 0; i < ic->nb_chapters; i++) {
3789 AVChapter *ch = ic->chapters[i];
3790 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3791 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3792 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3794 dump_metadata(NULL, ch->metadata, " ");
3796 if(ic->nb_programs) {
3797 int j, k, total = 0;
3798 for(j=0; j<ic->nb_programs; j++) {
3799 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3801 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3802 name ? name->value : "");
3803 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3804 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3805 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3806 printed[ic->programs[j]->stream_index[k]] = 1;
3808 total += ic->programs[j]->nb_stream_indexes;
3810 if (total < ic->nb_streams)
3811 av_log(NULL, AV_LOG_INFO, " No Program\n");
3813 for(i=0;i<ic->nb_streams;i++)
3815 dump_stream_format(ic, i, index, is_output);
3820 int64_t av_gettime(void)
3823 gettimeofday(&tv,NULL);
3824 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3827 uint64_t ff_ntp_time(void)
3829 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3832 int av_get_frame_filename(char *buf, int buf_size,
3833 const char *path, int number)
3836 char *q, buf1[20], c;
3837 int nd, len, percentd_found;
3849 while (isdigit(*p)) {
3850 nd = nd * 10 + *p++ - '0';
3853 } while (isdigit(c));
3862 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3864 if ((q - buf + len) > buf_size - 1)
3866 memcpy(q, buf1, len);
3874 if ((q - buf) < buf_size - 1)
3878 if (!percentd_found)
3887 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3891 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3893 for(i=0;i<size;i+=16) {
3900 PRINT(" %02x", buf[i+j]);
3905 for(j=0;j<len;j++) {
3907 if (c < ' ' || c > '~')
3916 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3918 hex_dump_internal(NULL, f, 0, buf, size);
3921 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3923 hex_dump_internal(avcl, NULL, level, buf, size);
3926 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3929 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3930 PRINT("stream #%d:\n", pkt->stream_index);
3931 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3932 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3933 /* DTS is _always_ valid after av_read_frame() */
3935 if (pkt->dts == AV_NOPTS_VALUE)
3938 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3939 /* PTS may not be known if B-frames are present. */
3941 if (pkt->pts == AV_NOPTS_VALUE)
3944 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3946 PRINT(" size=%d\n", pkt->size);
3949 av_hex_dump(f, pkt->data, pkt->size);
3953 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3955 AVRational tb = { 1, AV_TIME_BASE };
3956 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3960 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3962 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3966 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3968 AVRational tb = { 1, AV_TIME_BASE };
3969 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3973 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3976 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3979 void av_url_split(char *proto, int proto_size,
3980 char *authorization, int authorization_size,
3981 char *hostname, int hostname_size,
3983 char *path, int path_size,
3986 const char *p, *ls, *at, *col, *brk;
3988 if (port_ptr) *port_ptr = -1;
3989 if (proto_size > 0) proto[0] = 0;
3990 if (authorization_size > 0) authorization[0] = 0;
3991 if (hostname_size > 0) hostname[0] = 0;
3992 if (path_size > 0) path[0] = 0;
3994 /* parse protocol */
3995 if ((p = strchr(url, ':'))) {
3996 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4001 /* no protocol means plain filename */
4002 av_strlcpy(path, url, path_size);
4006 /* separate path from hostname */
4007 ls = strchr(p, '/');
4009 ls = strchr(p, '?');
4011 av_strlcpy(path, ls, path_size);
4013 ls = &p[strlen(p)]; // XXX
4015 /* the rest is hostname, use that to parse auth/port */
4017 /* authorization (user[:pass]@hostname) */
4018 if ((at = strchr(p, '@')) && at < ls) {
4019 av_strlcpy(authorization, p,
4020 FFMIN(authorization_size, at + 1 - p));
4021 p = at + 1; /* skip '@' */
4024 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4026 av_strlcpy(hostname, p + 1,
4027 FFMIN(hostname_size, brk - p));
4028 if (brk[1] == ':' && port_ptr)
4029 *port_ptr = atoi(brk + 2);
4030 } else if ((col = strchr(p, ':')) && col < ls) {
4031 av_strlcpy(hostname, p,
4032 FFMIN(col + 1 - p, hostname_size));
4033 if (port_ptr) *port_ptr = atoi(col + 1);
4035 av_strlcpy(hostname, p,
4036 FFMIN(ls + 1 - p, hostname_size));
4040 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4043 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4046 'C', 'D', 'E', 'F' };
4047 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4050 'c', 'd', 'e', 'f' };
4051 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4053 for(i = 0; i < s; i++) {
4054 buff[i * 2] = hex_table[src[i] >> 4];
4055 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4061 int ff_hex_to_data(uint8_t *data, const char *p)
4068 p += strspn(p, SPACE_CHARS);
4071 c = toupper((unsigned char) *p++);
4072 if (c >= '0' && c <= '9')
4074 else if (c >= 'A' && c <= 'F')
4089 #if FF_API_SET_PTS_INFO
4090 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4091 unsigned int pts_num, unsigned int pts_den)
4093 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4097 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4098 unsigned int pts_num, unsigned int pts_den)
4101 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4102 if(new_tb.num != pts_num)
4103 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4105 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4107 if(new_tb.num <= 0 || new_tb.den <= 0) {
4108 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
4111 s->time_base = new_tb;
4112 s->pts_wrap_bits = pts_wrap_bits;
4115 int ff_url_join(char *str, int size, const char *proto,
4116 const char *authorization, const char *hostname,
4117 int port, const char *fmt, ...)
4120 struct addrinfo hints = { 0 }, *ai;
4125 av_strlcatf(str, size, "%s://", proto);
4126 if (authorization && authorization[0])
4127 av_strlcatf(str, size, "%s@", authorization);
4128 #if CONFIG_NETWORK && defined(AF_INET6)
4129 /* Determine if hostname is a numerical IPv6 address,
4130 * properly escape it within [] in that case. */
4131 hints.ai_flags = AI_NUMERICHOST;
4132 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4133 if (ai->ai_family == AF_INET6) {
4134 av_strlcat(str, "[", size);
4135 av_strlcat(str, hostname, size);
4136 av_strlcat(str, "]", size);
4138 av_strlcat(str, hostname, size);
4143 /* Not an IPv6 address, just output the plain string. */
4144 av_strlcat(str, hostname, size);
4147 av_strlcatf(str, size, ":%d", port);
4150 int len = strlen(str);
4153 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4159 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4160 AVFormatContext *src)
4165 local_pkt.stream_index = dst_stream;
4166 if (pkt->pts != AV_NOPTS_VALUE)
4167 local_pkt.pts = av_rescale_q(pkt->pts,
4168 src->streams[pkt->stream_index]->time_base,
4169 dst->streams[dst_stream]->time_base);
4170 if (pkt->dts != AV_NOPTS_VALUE)
4171 local_pkt.dts = av_rescale_q(pkt->dts,
4172 src->streams[pkt->stream_index]->time_base,
4173 dst->streams[dst_stream]->time_base);
4174 return av_write_frame(dst, &local_pkt);
4177 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4180 const char *ptr = str;
4182 /* Parse key=value pairs. */
4185 char *dest = NULL, *dest_end;
4186 int key_len, dest_len = 0;
4188 /* Skip whitespace and potential commas. */
4189 while (*ptr && (isspace(*ptr) || *ptr == ','))
4196 if (!(ptr = strchr(key, '=')))
4199 key_len = ptr - key;
4201 callback_get_buf(context, key, key_len, &dest, &dest_len);
4202 dest_end = dest + dest_len - 1;
4206 while (*ptr && *ptr != '\"') {
4210 if (dest && dest < dest_end)
4214 if (dest && dest < dest_end)
4222 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4223 if (dest && dest < dest_end)
4231 int ff_find_stream_index(AVFormatContext *s, int id)
4234 for (i = 0; i < s->nb_streams; i++) {
4235 if (s->streams[i]->id == id)
4241 void ff_make_absolute_url(char *buf, int size, const char *base,
4245 /* Absolute path, relative to the current server */
4246 if (base && strstr(base, "://") && rel[0] == '/') {
4248 av_strlcpy(buf, base, size);
4249 sep = strstr(buf, "://");
4252 sep = strchr(sep, '/');
4256 av_strlcat(buf, rel, size);
4259 /* If rel actually is an absolute url, just copy it */
4260 if (!base || strstr(rel, "://") || rel[0] == '/') {
4261 av_strlcpy(buf, rel, size);
4265 av_strlcpy(buf, base, size);
4266 /* Remove the file name from the base url */
4267 sep = strrchr(buf, '/');
4272 while (av_strstart(rel, "../", NULL) && sep) {
4273 /* Remove the path delimiter at the end */
4275 sep = strrchr(buf, '/');
4276 /* If the next directory name to pop off is "..", break here */
4277 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4278 /* Readd the slash we just removed */
4279 av_strlcat(buf, "/", size);
4282 /* Cut off the directory name */
4289 av_strlcat(buf, rel, size);
4292 int64_t ff_iso8601_to_unix_time(const char *datestr)
4295 struct tm time1 = {0}, time2 = {0};
4297 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4298 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4300 return av_timegm(&time2);
4302 return av_timegm(&time1);
4304 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4305 "the date string.\n");
4310 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4313 if (ofmt->query_codec)
4314 return ofmt->query_codec(codec_id, std_compliance);
4315 else if (ofmt->codec_tag)
4316 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4317 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4318 codec_id == ofmt->subtitle_codec)
4321 return AVERROR_PATCHWELCOME;
4324 int avformat_network_init(void)
4328 ff_network_inited_globally = 1;
4329 if ((ret = ff_network_init()) < 0)
4336 int avformat_network_deinit(void)
4345 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4346 uint64_t channel_layout, int32_t sample_rate,
4347 int32_t width, int32_t height)
4353 return AVERROR(EINVAL);
4356 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4358 if (channel_layout) {
4360 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4364 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4366 if (width || height) {
4368 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4370 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4372 return AVERROR(ENOMEM);
4373 bytestream_put_le32(&data, flags);
4375 bytestream_put_le32(&data, channels);
4377 bytestream_put_le64(&data, channel_layout);
4379 bytestream_put_le32(&data, sample_rate);
4380 if (width || height) {
4381 bytestream_put_le32(&data, width);
4382 bytestream_put_le32(&data, height);
4387 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4389 return ff_codec_bmp_tags;
4391 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4393 return ff_codec_wav_tags;