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)
1980 if(ic->duration != AV_NOPTS_VALUE)
1983 for(i = 0;i < ic->nb_streams; i++) {
1984 st = ic->streams[i];
1985 if (st->duration != AV_NOPTS_VALUE)
1994 * Estimate the stream timings from the one of each components.
1996 * Also computes the global bitrate if possible.
1998 static void update_stream_timings(AVFormatContext *ic)
2000 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2001 int64_t duration, duration1, filesize;
2005 start_time = INT64_MAX;
2006 start_time_text = INT64_MAX;
2007 end_time = INT64_MIN;
2008 duration = INT64_MIN;
2009 for(i = 0;i < ic->nb_streams; i++) {
2010 st = ic->streams[i];
2011 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2012 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2013 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2014 if (start_time1 < start_time_text)
2015 start_time_text = start_time1;
2017 start_time = FFMIN(start_time, start_time1);
2018 if (st->duration != AV_NOPTS_VALUE) {
2019 end_time1 = start_time1
2020 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2021 end_time = FFMAX(end_time, end_time1);
2024 if (st->duration != AV_NOPTS_VALUE) {
2025 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2026 duration = FFMAX(duration, duration1);
2029 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2030 start_time = start_time_text;
2031 if (start_time != INT64_MAX) {
2032 ic->start_time = start_time;
2033 if (end_time != INT64_MIN)
2034 duration = FFMAX(duration, end_time - start_time);
2036 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2037 ic->duration = duration;
2039 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2040 /* compute the bitrate */
2041 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2042 (double)ic->duration;
2046 static void fill_all_stream_timings(AVFormatContext *ic)
2051 update_stream_timings(ic);
2052 for(i = 0;i < ic->nb_streams; i++) {
2053 st = ic->streams[i];
2054 if (st->start_time == AV_NOPTS_VALUE) {
2055 if(ic->start_time != AV_NOPTS_VALUE)
2056 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2057 if(ic->duration != AV_NOPTS_VALUE)
2058 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2063 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2065 int64_t filesize, duration;
2069 /* if bit_rate is already set, we believe it */
2070 if (ic->bit_rate <= 0) {
2072 for(i=0;i<ic->nb_streams;i++) {
2073 st = ic->streams[i];
2074 if (st->codec->bit_rate > 0)
2075 bit_rate += st->codec->bit_rate;
2077 ic->bit_rate = bit_rate;
2080 /* if duration is already set, we believe it */
2081 if (ic->duration == AV_NOPTS_VALUE &&
2082 ic->bit_rate != 0) {
2083 filesize = ic->pb ? avio_size(ic->pb) : 0;
2085 for(i = 0; i < ic->nb_streams; i++) {
2086 st = ic->streams[i];
2087 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2088 if (st->duration == AV_NOPTS_VALUE)
2089 st->duration = duration;
2095 #define DURATION_MAX_READ_SIZE 250000
2096 #define DURATION_MAX_RETRY 3
2098 /* only usable for MPEG-PS streams */
2099 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2101 AVPacket pkt1, *pkt = &pkt1;
2103 int read_size, i, ret;
2105 int64_t filesize, offset, duration;
2108 /* flush packet queue */
2109 flush_packet_queue(ic);
2111 for (i=0; i<ic->nb_streams; i++) {
2112 st = ic->streams[i];
2113 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2114 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2117 av_parser_close(st->parser);
2122 /* estimate the end time (duration) */
2123 /* XXX: may need to support wrapping */
2124 filesize = ic->pb ? avio_size(ic->pb) : 0;
2125 end_time = AV_NOPTS_VALUE;
2127 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2131 avio_seek(ic->pb, offset, SEEK_SET);
2134 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2138 ret = ff_read_packet(ic, pkt);
2139 } while(ret == AVERROR(EAGAIN));
2142 read_size += pkt->size;
2143 st = ic->streams[pkt->stream_index];
2144 if (pkt->pts != AV_NOPTS_VALUE &&
2145 (st->start_time != AV_NOPTS_VALUE ||
2146 st->first_dts != AV_NOPTS_VALUE)) {
2147 duration = end_time = pkt->pts;
2148 if (st->start_time != AV_NOPTS_VALUE)
2149 duration -= st->start_time;
2151 duration -= st->first_dts;
2153 duration += 1LL<<st->pts_wrap_bits;
2155 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2156 st->duration = duration;
2159 av_free_packet(pkt);
2161 }while( end_time==AV_NOPTS_VALUE
2162 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2163 && ++retry <= DURATION_MAX_RETRY);
2165 fill_all_stream_timings(ic);
2167 avio_seek(ic->pb, old_offset, SEEK_SET);
2168 for (i=0; i<ic->nb_streams; i++) {
2170 st->cur_dts= st->first_dts;
2171 st->last_IP_pts = AV_NOPTS_VALUE;
2172 st->reference_dts = AV_NOPTS_VALUE;
2176 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2180 /* get the file size, if possible */
2181 if (ic->iformat->flags & AVFMT_NOFILE) {
2184 file_size = avio_size(ic->pb);
2185 file_size = FFMAX(0, file_size);
2188 if ((!strcmp(ic->iformat->name, "mpeg") ||
2189 !strcmp(ic->iformat->name, "mpegts")) &&
2190 file_size && ic->pb->seekable) {
2191 /* get accurate estimate from the PTSes */
2192 estimate_timings_from_pts(ic, old_offset);
2193 } else if (has_duration(ic)) {
2194 /* at least one component has timings - we use them for all
2196 fill_all_stream_timings(ic);
2198 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2199 /* less precise: use bitrate info */
2200 estimate_timings_from_bit_rate(ic);
2202 update_stream_timings(ic);
2206 AVStream av_unused *st;
2207 for(i = 0;i < ic->nb_streams; i++) {
2208 st = ic->streams[i];
2209 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2210 (double) st->start_time / AV_TIME_BASE,
2211 (double) st->duration / AV_TIME_BASE);
2213 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2214 (double) ic->start_time / AV_TIME_BASE,
2215 (double) ic->duration / AV_TIME_BASE,
2216 ic->bit_rate / 1000);
2220 static int has_codec_parameters(AVStream *st)
2222 AVCodecContext *avctx = st->codec;
2224 switch (avctx->codec_type) {
2225 case AVMEDIA_TYPE_AUDIO:
2226 val = avctx->sample_rate && avctx->channels;
2227 if (!avctx->frame_size && determinable_frame_size(avctx))
2229 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2232 case AVMEDIA_TYPE_VIDEO:
2234 if (st->info->found_decoder >= 0 && avctx->pix_fmt == PIX_FMT_NONE)
2237 case AVMEDIA_TYPE_DATA:
2238 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2243 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2246 static int has_decode_delay_been_guessed(AVStream *st)
2248 return st->codec->codec_id != CODEC_ID_H264 ||
2249 st->info->nb_decoded_frames >= 6;
2252 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2253 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2256 int got_picture = 1, ret = 0;
2258 AVPacket pkt = *avpkt;
2260 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2261 AVDictionary *thread_opt = NULL;
2263 codec = st->codec->codec ? st->codec->codec :
2264 avcodec_find_decoder(st->codec->codec_id);
2267 st->info->found_decoder = -1;
2271 /* force thread count to 1 since the h264 decoder will not extract SPS
2272 * and PPS to extradata during multi-threaded decoding */
2273 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2274 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2276 av_dict_free(&thread_opt);
2278 st->info->found_decoder = -1;
2281 st->info->found_decoder = 1;
2282 } else if (!st->info->found_decoder)
2283 st->info->found_decoder = 1;
2285 if (st->info->found_decoder < 0)
2288 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2290 (!has_codec_parameters(st) ||
2291 !has_decode_delay_been_guessed(st) ||
2292 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2294 avcodec_get_frame_defaults(&picture);
2295 switch(st->codec->codec_type) {
2296 case AVMEDIA_TYPE_VIDEO:
2297 ret = avcodec_decode_video2(st->codec, &picture,
2298 &got_picture, &pkt);
2300 case AVMEDIA_TYPE_AUDIO:
2301 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2308 st->info->nb_decoded_frames++;
2314 if(!pkt.data && !got_picture)
2319 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2321 while (tags->id != CODEC_ID_NONE) {
2329 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2332 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2333 if(tag == tags[i].tag)
2336 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2337 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2340 return CODEC_ID_NONE;
2343 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2346 for(i=0; tags && tags[i]; i++){
2347 int tag= ff_codec_get_tag(tags[i], id);
2353 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2356 for(i=0; tags && tags[i]; i++){
2357 enum CodecID id= ff_codec_get_id(tags[i], tag);
2358 if(id!=CODEC_ID_NONE) return id;
2360 return CODEC_ID_NONE;
2363 static void compute_chapters_end(AVFormatContext *s)
2366 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2368 for (i = 0; i < s->nb_chapters; i++)
2369 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2370 AVChapter *ch = s->chapters[i];
2371 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2374 for (j = 0; j < s->nb_chapters; j++) {
2375 AVChapter *ch1 = s->chapters[j];
2376 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2377 if (j != i && next_start > ch->start && next_start < end)
2380 ch->end = (end == INT64_MAX) ? ch->start : end;
2384 static int get_std_framerate(int i){
2385 if(i<60*12) return i*1001;
2386 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2390 * Is the time base unreliable.
2391 * This is a heuristic to balance between quick acceptance of the values in
2392 * the headers vs. some extra checks.
2393 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2394 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2395 * And there are "variable" fps files this needs to detect as well.
2397 static int tb_unreliable(AVCodecContext *c){
2398 if( c->time_base.den >= 101L*c->time_base.num
2399 || c->time_base.den < 5L*c->time_base.num
2400 /* || c->codec_tag == AV_RL32("DIVX")
2401 || c->codec_tag == AV_RL32("XVID")*/
2402 || c->codec_id == CODEC_ID_MPEG2VIDEO
2403 || c->codec_id == CODEC_ID_H264
2409 #if FF_API_FORMAT_PARAMETERS
2410 int av_find_stream_info(AVFormatContext *ic)
2412 return avformat_find_stream_info(ic, NULL);
2416 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2418 int i, count, ret, read_size, j;
2420 AVPacket pkt1, *pkt;
2421 int64_t old_offset = avio_tell(ic->pb);
2422 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2423 int flush_codecs = 1;
2426 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2428 for(i=0;i<ic->nb_streams;i++) {
2430 AVDictionary *thread_opt = NULL;
2431 st = ic->streams[i];
2433 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2434 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2435 /* if(!st->time_base.num)
2437 if(!st->codec->time_base.num)
2438 st->codec->time_base= st->time_base;
2440 //only for the split stuff
2441 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2442 st->parser = av_parser_init(st->codec->codec_id);
2443 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2444 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2447 codec = st->codec->codec ? st->codec->codec :
2448 avcodec_find_decoder(st->codec->codec_id);
2450 /* force thread count to 1 since the h264 decoder will not extract SPS
2451 * and PPS to extradata during multi-threaded decoding */
2452 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2454 /* Ensure that subtitle_header is properly set. */
2455 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2456 && codec && !st->codec->codec)
2457 avcodec_open2(st->codec, codec, options ? &options[i]
2460 //try to just open decoders, in case this is enough to get parameters
2461 if (!has_codec_parameters(st)) {
2462 if (codec && !st->codec->codec)
2463 avcodec_open2(st->codec, codec, options ? &options[i]
2467 av_dict_free(&thread_opt);
2470 for (i=0; i<ic->nb_streams; i++) {
2471 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2477 if (ff_check_interrupt(&ic->interrupt_callback)){
2479 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2483 /* check if one codec still needs to be handled */
2484 for(i=0;i<ic->nb_streams;i++) {
2485 int fps_analyze_framecount = 20;
2487 st = ic->streams[i];
2488 if (!has_codec_parameters(st))
2490 /* if the timebase is coarse (like the usual millisecond precision
2491 of mkv), we need to analyze more frames to reliably arrive at
2493 if (av_q2d(st->time_base) > 0.0005)
2494 fps_analyze_framecount *= 2;
2495 if (ic->fps_probe_size >= 0)
2496 fps_analyze_framecount = ic->fps_probe_size;
2497 /* variable fps and no guess at the real fps */
2498 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2499 && st->info->duration_count < fps_analyze_framecount
2500 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2502 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2504 if (st->first_dts == AV_NOPTS_VALUE &&
2505 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2506 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2509 if (i == ic->nb_streams) {
2510 /* NOTE: if the format has no header, then we need to read
2511 some packets to get most of the streams, so we cannot
2513 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2514 /* if we found the info for all the codecs, we can stop */
2516 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2521 /* we did not get all the codec info, but we read too much data */
2522 if (read_size >= ic->probesize) {
2524 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2525 for (i = 0; i < ic->nb_streams; i++)
2526 if (!ic->streams[i]->r_frame_rate.num &&
2527 ic->streams[i]->info->duration_count <= 1)
2528 av_log(ic, AV_LOG_WARNING,
2529 "Stream #%d: not enough frames to estimate rate; "
2530 "consider increasing probesize\n", i);
2534 /* NOTE: a new stream can be added there if no header in file
2535 (AVFMTCTX_NOHEADER) */
2536 ret = read_frame_internal(ic, &pkt1);
2537 if (ret == AVERROR(EAGAIN))
2545 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2546 if ((ret = av_dup_packet(pkt)) < 0)
2547 goto find_stream_info_err;
2549 read_size += pkt->size;
2551 st = ic->streams[pkt->stream_index];
2552 if (st->codec_info_nb_frames>1) {
2554 if (st->time_base.den > 0)
2555 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2556 if (st->avg_frame_rate.num > 0)
2557 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));
2559 if (t >= ic->max_analyze_duration) {
2560 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2563 st->info->codec_info_duration += pkt->duration;
2566 int64_t last = st->info->last_dts;
2568 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2569 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2570 int64_t duration= pkt->dts - last;
2572 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2573 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2574 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2575 int framerate= get_std_framerate(i);
2576 double sdts= dts*framerate/(1001*12);
2578 int ticks= lrintf(sdts+j*0.5);
2579 double error= sdts - ticks + j*0.5;
2580 st->info->duration_error[j][0][i] += error;
2581 st->info->duration_error[j][1][i] += error*error;
2584 st->info->duration_count++;
2585 // ignore the first 4 values, they might have some random jitter
2586 if (st->info->duration_count > 3)
2587 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2589 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2590 st->info->last_dts = pkt->dts;
2592 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2593 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2594 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2595 st->codec->extradata_size= i;
2596 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2597 if (!st->codec->extradata)
2598 return AVERROR(ENOMEM);
2599 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2600 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2604 /* if still no information, we try to open the codec and to
2605 decompress the frame. We try to avoid that in most cases as
2606 it takes longer and uses more memory. For MPEG-4, we need to
2607 decompress for QuickTime.
2609 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2610 least one frame of codec data, this makes sure the codec initializes
2611 the channel configuration and does not only trust the values from the container.
2613 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2615 st->codec_info_nb_frames++;
2620 AVPacket empty_pkt = { 0 };
2622 av_init_packet(&empty_pkt);
2624 ret = -1; /* we could not have all the codec parameters before EOF */
2625 for(i=0;i<ic->nb_streams;i++) {
2626 st = ic->streams[i];
2628 /* flush the decoders */
2629 if (st->info->found_decoder == 1) {
2631 err = try_decode_frame(st, &empty_pkt,
2632 (options && i < orig_nb_streams) ?
2633 &options[i] : NULL);
2634 } while (err > 0 && !has_codec_parameters(st));
2637 av_log(ic, AV_LOG_INFO,
2638 "decoding for stream %d failed\n", st->index);
2642 if (!has_codec_parameters(st)){
2644 avcodec_string(buf, sizeof(buf), st->codec, 0);
2645 av_log(ic, AV_LOG_WARNING,
2646 "Could not find codec parameters (%s)\n", buf);
2653 // close codecs which were opened in try_decode_frame()
2654 for(i=0;i<ic->nb_streams;i++) {
2655 st = ic->streams[i];
2656 avcodec_close(st->codec);
2658 for(i=0;i<ic->nb_streams;i++) {
2659 st = ic->streams[i];
2660 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2661 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2662 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2663 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2664 st->codec->codec_tag= tag;
2667 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2668 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2669 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2670 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2671 // the check for tb_unreliable() is not completely correct, since this is not about handling
2672 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2673 // ipmovie.c produces.
2674 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)
2675 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);
2676 if (st->info->duration_count && !st->r_frame_rate.num
2677 && tb_unreliable(st->codec) /*&&
2678 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2679 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2681 double best_error= 0.01;
2683 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2686 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2688 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2691 int n= st->info->duration_count;
2692 double a= st->info->duration_error[k][0][j] / n;
2693 double error= st->info->duration_error[k][1][j]/n - a*a;
2695 if(error < best_error && best_error> 0.000000001){
2697 num = get_std_framerate(j);
2700 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2703 // do not increase frame rate by more than 1 % in order to match a standard rate.
2704 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2705 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2708 if (!st->r_frame_rate.num){
2709 if( st->codec->time_base.den * (int64_t)st->time_base.num
2710 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2711 st->r_frame_rate.num = st->codec->time_base.den;
2712 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2714 st->r_frame_rate.num = st->time_base.den;
2715 st->r_frame_rate.den = st->time_base.num;
2718 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2719 if(!st->codec->bits_per_coded_sample)
2720 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2721 // set stream disposition based on audio service type
2722 switch (st->codec->audio_service_type) {
2723 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2724 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2725 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2726 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2727 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2728 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2729 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2730 st->disposition = AV_DISPOSITION_COMMENT; break;
2731 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2732 st->disposition = AV_DISPOSITION_KARAOKE; break;
2737 estimate_timings(ic, old_offset);
2739 compute_chapters_end(ic);
2741 find_stream_info_err:
2742 for (i=0; i < ic->nb_streams; i++) {
2743 if (ic->streams[i]->codec)
2744 ic->streams[i]->codec->thread_count = 0;
2745 av_freep(&ic->streams[i]->info);
2748 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2752 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2756 for (i = 0; i < ic->nb_programs; i++) {
2757 if (ic->programs[i] == last) {
2761 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2762 if (ic->programs[i]->stream_index[j] == s)
2763 return ic->programs[i];
2769 int av_find_best_stream(AVFormatContext *ic,
2770 enum AVMediaType type,
2771 int wanted_stream_nb,
2773 AVCodec **decoder_ret,
2776 int i, nb_streams = ic->nb_streams;
2777 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2778 unsigned *program = NULL;
2779 AVCodec *decoder = NULL, *best_decoder = NULL;
2781 if (related_stream >= 0 && wanted_stream_nb < 0) {
2782 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2784 program = p->stream_index;
2785 nb_streams = p->nb_stream_indexes;
2788 for (i = 0; i < nb_streams; i++) {
2789 int real_stream_index = program ? program[i] : i;
2790 AVStream *st = ic->streams[real_stream_index];
2791 AVCodecContext *avctx = st->codec;
2792 if (avctx->codec_type != type)
2794 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2796 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2799 decoder = avcodec_find_decoder(st->codec->codec_id);
2802 ret = AVERROR_DECODER_NOT_FOUND;
2806 if (best_count >= st->codec_info_nb_frames)
2808 best_count = st->codec_info_nb_frames;
2809 ret = real_stream_index;
2810 best_decoder = decoder;
2811 if (program && i == nb_streams - 1 && ret < 0) {
2813 nb_streams = ic->nb_streams;
2814 i = 0; /* no related stream found, try again with everything */
2818 *decoder_ret = best_decoder;
2822 /*******************************************************/
2824 int av_read_play(AVFormatContext *s)
2826 if (s->iformat->read_play)
2827 return s->iformat->read_play(s);
2829 return avio_pause(s->pb, 0);
2830 return AVERROR(ENOSYS);
2833 int av_read_pause(AVFormatContext *s)
2835 if (s->iformat->read_pause)
2836 return s->iformat->read_pause(s);
2838 return avio_pause(s->pb, 1);
2839 return AVERROR(ENOSYS);
2842 void avformat_free_context(AVFormatContext *s)
2848 if (s->iformat && s->iformat->priv_class && s->priv_data)
2849 av_opt_free(s->priv_data);
2851 for(i=0;i<s->nb_streams;i++) {
2852 /* free all data in a stream component */
2855 av_parser_close(st->parser);
2857 if (st->attached_pic.data)
2858 av_free_packet(&st->attached_pic);
2859 av_dict_free(&st->metadata);
2860 av_freep(&st->index_entries);
2861 av_freep(&st->codec->extradata);
2862 av_freep(&st->codec->subtitle_header);
2863 av_freep(&st->codec);
2864 av_freep(&st->priv_data);
2865 av_freep(&st->info);
2868 for(i=s->nb_programs-1; i>=0; i--) {
2869 av_dict_free(&s->programs[i]->metadata);
2870 av_freep(&s->programs[i]->stream_index);
2871 av_freep(&s->programs[i]);
2873 av_freep(&s->programs);
2874 av_freep(&s->priv_data);
2875 while(s->nb_chapters--) {
2876 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2877 av_freep(&s->chapters[s->nb_chapters]);
2879 av_freep(&s->chapters);
2880 av_dict_free(&s->metadata);
2881 av_freep(&s->streams);
2885 #if FF_API_CLOSE_INPUT_FILE
2886 void av_close_input_file(AVFormatContext *s)
2888 avformat_close_input(&s);
2892 void avformat_close_input(AVFormatContext **ps)
2894 AVFormatContext *s = *ps;
2895 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2897 flush_packet_queue(s);
2898 if (s->iformat && (s->iformat->read_close))
2899 s->iformat->read_close(s);
2900 avformat_free_context(s);
2906 #if FF_API_NEW_STREAM
2907 AVStream *av_new_stream(AVFormatContext *s, int id)
2909 AVStream *st = avformat_new_stream(s, NULL);
2916 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2922 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2924 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2927 s->streams = streams;
2929 st = av_mallocz(sizeof(AVStream));
2932 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2936 st->info->last_dts = AV_NOPTS_VALUE;
2938 st->codec = avcodec_alloc_context3(c);
2940 /* no default bitrate if decoding */
2941 st->codec->bit_rate = 0;
2943 st->index = s->nb_streams;
2944 st->start_time = AV_NOPTS_VALUE;
2945 st->duration = AV_NOPTS_VALUE;
2946 /* we set the current DTS to 0 so that formats without any timestamps
2947 but durations get some timestamps, formats with some unknown
2948 timestamps have their first few packets buffered and the
2949 timestamps corrected before they are returned to the user */
2950 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
2951 st->first_dts = AV_NOPTS_VALUE;
2952 st->probe_packets = MAX_PROBE_PACKETS;
2954 /* default pts setting is MPEG-like */
2955 avpriv_set_pts_info(st, 33, 1, 90000);
2956 st->last_IP_pts = AV_NOPTS_VALUE;
2957 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2958 st->pts_buffer[i]= AV_NOPTS_VALUE;
2959 st->reference_dts = AV_NOPTS_VALUE;
2961 st->sample_aspect_ratio = (AVRational){0,1};
2963 s->streams[s->nb_streams++] = st;
2967 AVProgram *av_new_program(AVFormatContext *ac, int id)
2969 AVProgram *program=NULL;
2972 av_dlog(ac, "new_program: id=0x%04x\n", id);
2974 for(i=0; i<ac->nb_programs; i++)
2975 if(ac->programs[i]->id == id)
2976 program = ac->programs[i];
2979 program = av_mallocz(sizeof(AVProgram));
2982 dynarray_add(&ac->programs, &ac->nb_programs, program);
2983 program->discard = AVDISCARD_NONE;
2990 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2992 AVChapter *chapter = NULL;
2995 for(i=0; i<s->nb_chapters; i++)
2996 if(s->chapters[i]->id == id)
2997 chapter = s->chapters[i];
3000 chapter= av_mallocz(sizeof(AVChapter));
3003 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3005 av_dict_set(&chapter->metadata, "title", title, 0);
3007 chapter->time_base= time_base;
3008 chapter->start = start;
3014 /************************************************************/
3015 /* output media file */
3017 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3018 const char *format, const char *filename)
3020 AVFormatContext *s = avformat_alloc_context();
3029 oformat = av_guess_format(format, NULL, NULL);
3031 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3032 ret = AVERROR(EINVAL);
3036 oformat = av_guess_format(NULL, filename, NULL);
3038 ret = AVERROR(EINVAL);
3039 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3046 s->oformat = oformat;
3047 if (s->oformat->priv_data_size > 0) {
3048 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3051 if (s->oformat->priv_class) {
3052 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3053 av_opt_set_defaults(s->priv_data);
3056 s->priv_data = NULL;
3059 av_strlcpy(s->filename, filename, sizeof(s->filename));
3063 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3064 ret = AVERROR(ENOMEM);
3066 avformat_free_context(s);
3070 #if FF_API_ALLOC_OUTPUT_CONTEXT
3071 AVFormatContext *avformat_alloc_output_context(const char *format,
3072 AVOutputFormat *oformat, const char *filename)
3074 AVFormatContext *avctx;
3075 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3076 return ret < 0 ? NULL : avctx;
3080 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3082 const AVCodecTag *avctag;
3084 enum CodecID id = CODEC_ID_NONE;
3085 unsigned int tag = 0;
3088 * Check that tag + id is in the table
3089 * If neither is in the table -> OK
3090 * If tag is in the table with another id -> FAIL
3091 * If id is in the table with another tag -> FAIL unless strict < normal
3093 for (n = 0; s->oformat->codec_tag[n]; n++) {
3094 avctag = s->oformat->codec_tag[n];
3095 while (avctag->id != CODEC_ID_NONE) {
3096 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3098 if (id == st->codec->codec_id)
3101 if (avctag->id == st->codec->codec_id)
3106 if (id != CODEC_ID_NONE)
3108 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3113 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3117 AVDictionary *tmp = NULL;
3120 av_dict_copy(&tmp, *options, 0);
3121 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3123 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3124 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3127 // some sanity checks
3128 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3129 av_log(s, AV_LOG_ERROR, "no streams\n");
3130 ret = AVERROR(EINVAL);
3134 for(i=0;i<s->nb_streams;i++) {
3137 switch (st->codec->codec_type) {
3138 case AVMEDIA_TYPE_AUDIO:
3139 if(st->codec->sample_rate<=0){
3140 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3141 ret = AVERROR(EINVAL);
3144 if(!st->codec->block_align)
3145 st->codec->block_align = st->codec->channels *
3146 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3148 case AVMEDIA_TYPE_VIDEO:
3149 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3150 av_log(s, AV_LOG_ERROR, "time base not set\n");
3151 ret = AVERROR(EINVAL);
3154 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3155 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3156 ret = AVERROR(EINVAL);
3159 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3160 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3162 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
3163 "(%d/%d) and encoder layer (%d/%d)\n",
3164 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3165 st->codec->sample_aspect_ratio.num,
3166 st->codec->sample_aspect_ratio.den);
3167 ret = AVERROR(EINVAL);
3173 if(s->oformat->codec_tag){
3174 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)){
3175 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3176 st->codec->codec_tag= 0;
3178 if(st->codec->codec_tag){
3179 if (!validate_codec_tag(s, st)) {
3181 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3182 av_log(s, AV_LOG_ERROR,
3183 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3184 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3185 ret = AVERROR_INVALIDDATA;
3189 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3192 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3193 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3194 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3197 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3198 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3199 if (!s->priv_data) {
3200 ret = AVERROR(ENOMEM);
3203 if (s->oformat->priv_class) {
3204 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3205 av_opt_set_defaults(s->priv_data);
3206 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3211 /* set muxer identification string */
3212 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3213 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3216 if(s->oformat->write_header){
3217 ret = s->oformat->write_header(s);
3222 /* init PTS generation */
3223 for(i=0;i<s->nb_streams;i++) {
3224 int64_t den = AV_NOPTS_VALUE;
3227 switch (st->codec->codec_type) {
3228 case AVMEDIA_TYPE_AUDIO:
3229 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3231 case AVMEDIA_TYPE_VIDEO:
3232 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3237 if (den != AV_NOPTS_VALUE) {
3239 ret = AVERROR_INVALIDDATA;
3242 frac_init(&st->pts, 0, 0, den);
3247 av_dict_free(options);
3256 //FIXME merge with compute_pkt_fields
3257 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3258 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3259 int num, den, frame_size, i;
3261 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3262 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3264 /* duration field */
3265 if (pkt->duration == 0) {
3266 compute_frame_duration(&num, &den, st, NULL, pkt);
3268 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3272 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3275 //XXX/FIXME this is a temporary hack until all encoders output pts
3276 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3279 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
3283 // pkt->pts= st->cur_dts;
3284 pkt->pts= st->pts.val;
3287 //calculate dts from pts
3288 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3289 st->pts_buffer[0]= pkt->pts;
3290 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3291 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3292 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3293 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3295 pkt->dts= st->pts_buffer[0];
3298 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)){
3299 av_log(s, AV_LOG_ERROR,
3300 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3301 st->index, st->cur_dts, pkt->dts);
3302 return AVERROR(EINVAL);
3304 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3305 av_log(s, AV_LOG_ERROR, "pts (%"PRId64") < dts (%"PRId64") in stream %d\n", pkt->pts, pkt->dts, st->index);
3306 return AVERROR(EINVAL);
3309 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3310 st->cur_dts= pkt->dts;
3311 st->pts.val= pkt->dts;
3314 switch (st->codec->codec_type) {
3315 case AVMEDIA_TYPE_AUDIO:
3316 frame_size = get_audio_frame_size(st->codec, pkt->size, 1);
3318 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3319 likely equal to the encoder delay, but it would be better if we
3320 had the real timestamps from the encoder */
3321 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3322 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3325 case AVMEDIA_TYPE_VIDEO:
3326 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3334 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3339 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3340 return s->oformat->write_packet(s, pkt);
3344 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3346 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3349 ret= s->oformat->write_packet(s, pkt);
3352 s->streams[pkt->stream_index]->nb_frames++;
3356 #define CHUNK_START 0x1000
3358 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3359 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3361 AVPacketList **next_point, *this_pktl;
3362 AVStream *st= s->streams[pkt->stream_index];
3363 int chunked= s->max_chunk_size || s->max_chunk_duration;
3365 this_pktl = av_mallocz(sizeof(AVPacketList));
3367 return AVERROR(ENOMEM);
3368 this_pktl->pkt= *pkt;
3369 pkt->destruct= NULL; // do not free original but only the copy
3370 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3372 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3373 next_point = &(st->last_in_packet_buffer->next);
3375 next_point = &s->packet_buffer;
3380 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3381 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3382 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3383 st->interleaver_chunk_size += pkt->size;
3384 st->interleaver_chunk_duration += pkt->duration;
3387 st->interleaver_chunk_size =
3388 st->interleaver_chunk_duration = 0;
3389 this_pktl->pkt.flags |= CHUNK_START;
3393 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3395 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3396 || !compare(s, &(*next_point)->pkt, pkt))){
3397 next_point= &(*next_point)->next;
3402 next_point = &(s->packet_buffer_end->next);
3405 assert(!*next_point);
3407 s->packet_buffer_end= this_pktl;
3410 this_pktl->next= *next_point;
3412 s->streams[pkt->stream_index]->last_in_packet_buffer=
3413 *next_point= this_pktl;
3417 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3419 AVStream *st = s->streams[ pkt ->stream_index];
3420 AVStream *st2= s->streams[ next->stream_index];
3421 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3423 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3424 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);
3425 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);
3427 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
3428 -( 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;
3431 comp= (ts>ts2) - (ts<ts2);
3435 return pkt->stream_index < next->stream_index;
3439 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3440 AVPacket *pkt, int flush)
3443 int stream_count=0, noninterleaved_count=0;
3444 int64_t delta_dts_max = 0;
3448 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3453 for(i=0; i < s->nb_streams; i++) {
3454 if (s->streams[i]->last_in_packet_buffer) {
3456 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3457 ++noninterleaved_count;
3461 if (s->nb_streams == stream_count) {
3464 for(i=0; i < s->nb_streams; i++) {
3465 if (s->streams[i]->last_in_packet_buffer) {
3467 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3468 s->streams[i]->time_base,
3470 av_rescale_q(s->packet_buffer->pkt.dts,
3471 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3473 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3476 if(s->nb_streams == stream_count+noninterleaved_count &&
3477 delta_dts_max > 20*AV_TIME_BASE) {
3478 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3482 if(stream_count && flush){
3483 pktl= s->packet_buffer;
3486 s->packet_buffer= pktl->next;
3487 if(!s->packet_buffer)
3488 s->packet_buffer_end= NULL;
3490 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3491 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3495 av_init_packet(out);
3500 #if FF_API_INTERLEAVE_PACKET
3501 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3502 AVPacket *pkt, int flush)
3504 return ff_interleave_packet_per_dts(s, out, pkt, flush);
3509 * Interleave an AVPacket correctly so it can be muxed.
3510 * @param out the interleaved packet will be output here
3511 * @param in the input packet
3512 * @param flush 1 if no further packets are available as input and all
3513 * remaining packets should be output
3514 * @return 1 if a packet was output, 0 if no packet could be output,
3515 * < 0 if an error occurred
3517 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3518 if (s->oformat->interleave_packet) {
3519 int ret = s->oformat->interleave_packet(s, out, in, flush);
3524 return ff_interleave_packet_per_dts(s, out, in, flush);
3527 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3531 AVStream *st= s->streams[ pkt->stream_index];
3533 //FIXME/XXX/HACK drop zero sized packets
3534 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3537 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3538 pkt->size, pkt->dts, pkt->pts);
3539 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3542 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3543 return AVERROR(EINVAL);
3545 av_dlog(s, "av_interleaved_write_frame FLUSH\n");
3551 int ret= interleave_packet(s, &opkt, pkt, flush);
3552 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3555 ret= s->oformat->write_packet(s, &opkt);
3557 s->streams[opkt.stream_index]->nb_frames++;
3559 av_free_packet(&opkt);
3564 if(s->pb && s->pb->error)
3565 return s->pb->error;
3569 int av_write_trailer(AVFormatContext *s)
3575 ret= interleave_packet(s, &pkt, NULL, 1);
3576 if(ret<0) //FIXME cleanup needed for ret<0 ?
3581 ret= s->oformat->write_packet(s, &pkt);
3583 s->streams[pkt.stream_index]->nb_frames++;
3585 av_free_packet(&pkt);
3589 if(s->pb && s->pb->error)
3593 if(s->oformat->write_trailer)
3594 ret = s->oformat->write_trailer(s);
3599 ret = s->pb ? s->pb->error : 0;
3600 for(i=0;i<s->nb_streams;i++) {
3601 av_freep(&s->streams[i]->priv_data);
3602 av_freep(&s->streams[i]->index_entries);
3604 if (s->oformat->priv_class)
3605 av_opt_free(s->priv_data);
3606 av_freep(&s->priv_data);
3610 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3611 int64_t *dts, int64_t *wall)
3613 if (!s->oformat || !s->oformat->get_output_timestamp)
3614 return AVERROR(ENOSYS);
3615 s->oformat->get_output_timestamp(s, stream, dts, wall);
3619 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3622 AVProgram *program=NULL;
3625 if (idx >= ac->nb_streams) {
3626 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3630 for(i=0; i<ac->nb_programs; i++){
3631 if(ac->programs[i]->id != progid)
3633 program = ac->programs[i];
3634 for(j=0; j<program->nb_stream_indexes; j++)
3635 if(program->stream_index[j] == idx)
3638 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3641 program->stream_index = tmp;
3642 program->stream_index[program->nb_stream_indexes++] = idx;
3647 static void print_fps(double d, const char *postfix){
3648 uint64_t v= lrintf(d*100);
3649 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3650 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3651 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3654 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3656 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3657 AVDictionaryEntry *tag=NULL;
3659 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3660 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3661 if(strcmp("language", tag->key)){
3662 const char *p = tag->value;
3663 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3666 size_t len = strcspn(p, "\xd\xa");
3667 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3668 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3670 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3671 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3674 av_log(ctx, AV_LOG_INFO, "\n");
3680 /* "user interface" functions */
3681 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3684 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3685 AVStream *st = ic->streams[i];
3686 int g = av_gcd(st->time_base.num, st->time_base.den);
3687 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3688 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3689 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3690 /* the pid is an important information, so we display it */
3691 /* XXX: add a generic system */
3692 if (flags & AVFMT_SHOW_IDS)
3693 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3695 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3696 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3697 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3698 if (st->sample_aspect_ratio.num && // default
3699 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3700 AVRational display_aspect_ratio;
3701 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3702 st->codec->width*st->sample_aspect_ratio.num,
3703 st->codec->height*st->sample_aspect_ratio.den,
3705 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3706 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3707 display_aspect_ratio.num, display_aspect_ratio.den);
3709 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3710 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3711 print_fps(av_q2d(st->avg_frame_rate), "fps");
3712 if(st->r_frame_rate.den && st->r_frame_rate.num)
3713 print_fps(av_q2d(st->r_frame_rate), "tbr");
3714 if(st->time_base.den && st->time_base.num)
3715 print_fps(1/av_q2d(st->time_base), "tbn");
3716 if(st->codec->time_base.den && st->codec->time_base.num)
3717 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3719 if (st->disposition & AV_DISPOSITION_DEFAULT)
3720 av_log(NULL, AV_LOG_INFO, " (default)");
3721 if (st->disposition & AV_DISPOSITION_DUB)
3722 av_log(NULL, AV_LOG_INFO, " (dub)");
3723 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3724 av_log(NULL, AV_LOG_INFO, " (original)");
3725 if (st->disposition & AV_DISPOSITION_COMMENT)
3726 av_log(NULL, AV_LOG_INFO, " (comment)");
3727 if (st->disposition & AV_DISPOSITION_LYRICS)
3728 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3729 if (st->disposition & AV_DISPOSITION_KARAOKE)
3730 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3731 if (st->disposition & AV_DISPOSITION_FORCED)
3732 av_log(NULL, AV_LOG_INFO, " (forced)");
3733 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3734 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3735 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3736 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3737 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3738 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3739 av_log(NULL, AV_LOG_INFO, "\n");
3740 dump_metadata(NULL, st->metadata, " ");
3743 void av_dump_format(AVFormatContext *ic,
3749 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3750 if (ic->nb_streams && !printed)
3753 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3754 is_output ? "Output" : "Input",
3756 is_output ? ic->oformat->name : ic->iformat->name,
3757 is_output ? "to" : "from", url);
3758 dump_metadata(NULL, ic->metadata, " ");
3760 av_log(NULL, AV_LOG_INFO, " Duration: ");
3761 if (ic->duration != AV_NOPTS_VALUE) {
3762 int hours, mins, secs, us;
3763 secs = ic->duration / AV_TIME_BASE;
3764 us = ic->duration % AV_TIME_BASE;
3769 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3770 (100 * us) / AV_TIME_BASE);
3772 av_log(NULL, AV_LOG_INFO, "N/A");
3774 if (ic->start_time != AV_NOPTS_VALUE) {
3776 av_log(NULL, AV_LOG_INFO, ", start: ");
3777 secs = ic->start_time / AV_TIME_BASE;
3778 us = abs(ic->start_time % AV_TIME_BASE);
3779 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3780 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3782 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3784 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3786 av_log(NULL, AV_LOG_INFO, "N/A");
3788 av_log(NULL, AV_LOG_INFO, "\n");
3790 for (i = 0; i < ic->nb_chapters; i++) {
3791 AVChapter *ch = ic->chapters[i];
3792 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3793 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3794 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3796 dump_metadata(NULL, ch->metadata, " ");
3798 if(ic->nb_programs) {
3799 int j, k, total = 0;
3800 for(j=0; j<ic->nb_programs; j++) {
3801 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3803 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3804 name ? name->value : "");
3805 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3806 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3807 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3808 printed[ic->programs[j]->stream_index[k]] = 1;
3810 total += ic->programs[j]->nb_stream_indexes;
3812 if (total < ic->nb_streams)
3813 av_log(NULL, AV_LOG_INFO, " No Program\n");
3815 for(i=0;i<ic->nb_streams;i++)
3817 dump_stream_format(ic, i, index, is_output);
3822 int64_t av_gettime(void)
3825 gettimeofday(&tv,NULL);
3826 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3829 uint64_t ff_ntp_time(void)
3831 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3834 int av_get_frame_filename(char *buf, int buf_size,
3835 const char *path, int number)
3838 char *q, buf1[20], c;
3839 int nd, len, percentd_found;
3851 while (isdigit(*p)) {
3852 nd = nd * 10 + *p++ - '0';
3855 } while (isdigit(c));
3864 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3866 if ((q - buf + len) > buf_size - 1)
3868 memcpy(q, buf1, len);
3876 if ((q - buf) < buf_size - 1)
3880 if (!percentd_found)
3889 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3893 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3895 for(i=0;i<size;i+=16) {
3902 PRINT(" %02x", buf[i+j]);
3907 for(j=0;j<len;j++) {
3909 if (c < ' ' || c > '~')
3918 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3920 hex_dump_internal(NULL, f, 0, buf, size);
3923 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3925 hex_dump_internal(avcl, NULL, level, buf, size);
3928 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3931 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3932 PRINT("stream #%d:\n", pkt->stream_index);
3933 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3934 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3935 /* DTS is _always_ valid after av_read_frame() */
3937 if (pkt->dts == AV_NOPTS_VALUE)
3940 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3941 /* PTS may not be known if B-frames are present. */
3943 if (pkt->pts == AV_NOPTS_VALUE)
3946 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3948 PRINT(" size=%d\n", pkt->size);
3951 av_hex_dump(f, pkt->data, pkt->size);
3955 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3957 AVRational tb = { 1, AV_TIME_BASE };
3958 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3962 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3964 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3968 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3970 AVRational tb = { 1, AV_TIME_BASE };
3971 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3975 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3978 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3981 void av_url_split(char *proto, int proto_size,
3982 char *authorization, int authorization_size,
3983 char *hostname, int hostname_size,
3985 char *path, int path_size,
3988 const char *p, *ls, *at, *col, *brk;
3990 if (port_ptr) *port_ptr = -1;
3991 if (proto_size > 0) proto[0] = 0;
3992 if (authorization_size > 0) authorization[0] = 0;
3993 if (hostname_size > 0) hostname[0] = 0;
3994 if (path_size > 0) path[0] = 0;
3996 /* parse protocol */
3997 if ((p = strchr(url, ':'))) {
3998 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4003 /* no protocol means plain filename */
4004 av_strlcpy(path, url, path_size);
4008 /* separate path from hostname */
4009 ls = strchr(p, '/');
4011 ls = strchr(p, '?');
4013 av_strlcpy(path, ls, path_size);
4015 ls = &p[strlen(p)]; // XXX
4017 /* the rest is hostname, use that to parse auth/port */
4019 /* authorization (user[:pass]@hostname) */
4020 if ((at = strchr(p, '@')) && at < ls) {
4021 av_strlcpy(authorization, p,
4022 FFMIN(authorization_size, at + 1 - p));
4023 p = at + 1; /* skip '@' */
4026 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4028 av_strlcpy(hostname, p + 1,
4029 FFMIN(hostname_size, brk - p));
4030 if (brk[1] == ':' && port_ptr)
4031 *port_ptr = atoi(brk + 2);
4032 } else if ((col = strchr(p, ':')) && col < ls) {
4033 av_strlcpy(hostname, p,
4034 FFMIN(col + 1 - p, hostname_size));
4035 if (port_ptr) *port_ptr = atoi(col + 1);
4037 av_strlcpy(hostname, p,
4038 FFMIN(ls + 1 - p, hostname_size));
4042 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4045 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4048 'C', 'D', 'E', 'F' };
4049 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4052 'c', 'd', 'e', 'f' };
4053 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4055 for(i = 0; i < s; i++) {
4056 buff[i * 2] = hex_table[src[i] >> 4];
4057 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4063 int ff_hex_to_data(uint8_t *data, const char *p)
4070 p += strspn(p, SPACE_CHARS);
4073 c = toupper((unsigned char) *p++);
4074 if (c >= '0' && c <= '9')
4076 else if (c >= 'A' && c <= 'F')
4091 #if FF_API_SET_PTS_INFO
4092 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4093 unsigned int pts_num, unsigned int pts_den)
4095 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4099 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4100 unsigned int pts_num, unsigned int pts_den)
4103 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4104 if(new_tb.num != pts_num)
4105 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4107 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4109 if(new_tb.num <= 0 || new_tb.den <= 0) {
4110 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
4113 s->time_base = new_tb;
4114 s->pts_wrap_bits = pts_wrap_bits;
4117 int ff_url_join(char *str, int size, const char *proto,
4118 const char *authorization, const char *hostname,
4119 int port, const char *fmt, ...)
4122 struct addrinfo hints = { 0 }, *ai;
4127 av_strlcatf(str, size, "%s://", proto);
4128 if (authorization && authorization[0])
4129 av_strlcatf(str, size, "%s@", authorization);
4130 #if CONFIG_NETWORK && defined(AF_INET6)
4131 /* Determine if hostname is a numerical IPv6 address,
4132 * properly escape it within [] in that case. */
4133 hints.ai_flags = AI_NUMERICHOST;
4134 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4135 if (ai->ai_family == AF_INET6) {
4136 av_strlcat(str, "[", size);
4137 av_strlcat(str, hostname, size);
4138 av_strlcat(str, "]", size);
4140 av_strlcat(str, hostname, size);
4145 /* Not an IPv6 address, just output the plain string. */
4146 av_strlcat(str, hostname, size);
4149 av_strlcatf(str, size, ":%d", port);
4152 int len = strlen(str);
4155 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4161 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4162 AVFormatContext *src)
4167 local_pkt.stream_index = dst_stream;
4168 if (pkt->pts != AV_NOPTS_VALUE)
4169 local_pkt.pts = av_rescale_q(pkt->pts,
4170 src->streams[pkt->stream_index]->time_base,
4171 dst->streams[dst_stream]->time_base);
4172 if (pkt->dts != AV_NOPTS_VALUE)
4173 local_pkt.dts = av_rescale_q(pkt->dts,
4174 src->streams[pkt->stream_index]->time_base,
4175 dst->streams[dst_stream]->time_base);
4176 return av_write_frame(dst, &local_pkt);
4179 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4182 const char *ptr = str;
4184 /* Parse key=value pairs. */
4187 char *dest = NULL, *dest_end;
4188 int key_len, dest_len = 0;
4190 /* Skip whitespace and potential commas. */
4191 while (*ptr && (isspace(*ptr) || *ptr == ','))
4198 if (!(ptr = strchr(key, '=')))
4201 key_len = ptr - key;
4203 callback_get_buf(context, key, key_len, &dest, &dest_len);
4204 dest_end = dest + dest_len - 1;
4208 while (*ptr && *ptr != '\"') {
4212 if (dest && dest < dest_end)
4216 if (dest && dest < dest_end)
4224 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4225 if (dest && dest < dest_end)
4233 int ff_find_stream_index(AVFormatContext *s, int id)
4236 for (i = 0; i < s->nb_streams; i++) {
4237 if (s->streams[i]->id == id)
4243 void ff_make_absolute_url(char *buf, int size, const char *base,
4247 /* Absolute path, relative to the current server */
4248 if (base && strstr(base, "://") && rel[0] == '/') {
4250 av_strlcpy(buf, base, size);
4251 sep = strstr(buf, "://");
4254 sep = strchr(sep, '/');
4258 av_strlcat(buf, rel, size);
4261 /* If rel actually is an absolute url, just copy it */
4262 if (!base || strstr(rel, "://") || rel[0] == '/') {
4263 av_strlcpy(buf, rel, size);
4267 av_strlcpy(buf, base, size);
4268 /* Remove the file name from the base url */
4269 sep = strrchr(buf, '/');
4274 while (av_strstart(rel, "../", NULL) && sep) {
4275 /* Remove the path delimiter at the end */
4277 sep = strrchr(buf, '/');
4278 /* If the next directory name to pop off is "..", break here */
4279 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4280 /* Readd the slash we just removed */
4281 av_strlcat(buf, "/", size);
4284 /* Cut off the directory name */
4291 av_strlcat(buf, rel, size);
4294 int64_t ff_iso8601_to_unix_time(const char *datestr)
4297 struct tm time1 = {0}, time2 = {0};
4299 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4300 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4302 return av_timegm(&time2);
4304 return av_timegm(&time1);
4306 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4307 "the date string.\n");
4312 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4315 if (ofmt->query_codec)
4316 return ofmt->query_codec(codec_id, std_compliance);
4317 else if (ofmt->codec_tag)
4318 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4319 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4320 codec_id == ofmt->subtitle_codec)
4323 return AVERROR_PATCHWELCOME;
4326 int avformat_network_init(void)
4330 ff_network_inited_globally = 1;
4331 if ((ret = ff_network_init()) < 0)
4338 int avformat_network_deinit(void)
4347 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4348 uint64_t channel_layout, int32_t sample_rate,
4349 int32_t width, int32_t height)
4355 return AVERROR(EINVAL);
4358 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4360 if (channel_layout) {
4362 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4366 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4368 if (width || height) {
4370 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4372 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4374 return AVERROR(ENOMEM);
4375 bytestream_put_le32(&data, flags);
4377 bytestream_put_le32(&data, channels);
4379 bytestream_put_le64(&data, channel_layout);
4381 bytestream_put_le32(&data, sample_rate);
4382 if (width || height) {
4383 bytestream_put_le32(&data, width);
4384 bytestream_put_le32(&data, height);
4389 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4391 return ff_codec_bmp_tags;
4393 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4395 return ff_codec_wav_tags;