2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/dict.h"
33 #include "libavutil/pixdesc.h"
36 #include "libavutil/avassert.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/timestamp.h"
42 #include "audiointerleave.h"
56 * various utility functions for use within FFmpeg
59 unsigned avformat_version(void)
61 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
62 return LIBAVFORMAT_VERSION_INT;
65 const char *avformat_configuration(void)
67 return FFMPEG_CONFIGURATION;
70 const char *avformat_license(void)
72 #define LICENSE_PREFIX "libavformat license: "
73 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
76 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
78 static int is_relative(int64_t ts) {
79 return ts > (RELATIVE_TS_BASE - (1LL<<48));
82 /* fraction handling */
85 * f = val + (num / den) + 0.5.
87 * 'num' is normalized so that it is such as 0 <= num < den.
89 * @param f fractional number
90 * @param val integer value
91 * @param num must be >= 0
92 * @param den must be >= 1
94 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
107 * Fractional addition to f: f = f + (incr / f->den).
109 * @param f fractional number
110 * @param incr increment, can be positive or negative
112 static void frac_add(AVFrac *f, int64_t incr)
125 } else if (num >= den) {
132 /** head of registered input format linked list */
133 static AVInputFormat *first_iformat = NULL;
134 /** head of registered output format linked list */
135 static AVOutputFormat *first_oformat = NULL;
137 AVInputFormat *av_iformat_next(AVInputFormat *f)
139 if(f) return f->next;
140 else return first_iformat;
143 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
145 if(f) return f->next;
146 else return first_oformat;
149 void av_register_input_format(AVInputFormat *format)
153 while (*p != NULL) p = &(*p)->next;
158 void av_register_output_format(AVOutputFormat *format)
162 while (*p != NULL) p = &(*p)->next;
167 int av_match_ext(const char *filename, const char *extensions)
175 ext = strrchr(filename, '.');
181 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
184 if (!av_strcasecmp(ext1, ext))
194 static int match_format(const char *name, const char *names)
202 namelen = strlen(name);
203 while ((p = strchr(names, ','))) {
204 len = FFMAX(p - names, namelen);
205 if (!av_strncasecmp(name, names, len))
209 return !av_strcasecmp(name, names);
212 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
213 const char *mime_type)
215 AVOutputFormat *fmt = NULL, *fmt_found;
216 int score_max, score;
218 /* specific test for image sequences */
219 #if CONFIG_IMAGE2_MUXER
220 if (!short_name && filename &&
221 av_filename_number_test(filename) &&
222 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
223 return av_guess_format("image2", NULL, NULL);
226 /* Find the proper file type. */
229 while ((fmt = av_oformat_next(fmt))) {
231 if (fmt->name && short_name && !av_strcasecmp(fmt->name, short_name))
233 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
235 if (filename && fmt->extensions &&
236 av_match_ext(filename, fmt->extensions)) {
239 if (score > score_max) {
247 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
248 const char *filename, const char *mime_type, enum AVMediaType type){
249 if(type == AVMEDIA_TYPE_VIDEO){
250 enum CodecID codec_id= CODEC_ID_NONE;
252 #if CONFIG_IMAGE2_MUXER
253 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
254 codec_id= ff_guess_image2_codec(filename);
257 if(codec_id == CODEC_ID_NONE)
258 codec_id= fmt->video_codec;
260 }else if(type == AVMEDIA_TYPE_AUDIO)
261 return fmt->audio_codec;
262 else if (type == AVMEDIA_TYPE_SUBTITLE)
263 return fmt->subtitle_codec;
265 return CODEC_ID_NONE;
268 AVInputFormat *av_find_input_format(const char *short_name)
270 AVInputFormat *fmt = NULL;
271 while ((fmt = av_iformat_next(fmt))) {
272 if (match_format(short_name, fmt->name))
278 int ffio_limit(AVIOContext *s, int size)
281 int64_t remaining= s->maxsize - avio_tell(s);
282 if(remaining < size){
283 int64_t newsize= avio_size(s);
284 if(!s->maxsize || s->maxsize<newsize)
285 s->maxsize= newsize - !newsize;
286 remaining= s->maxsize - avio_tell(s);
287 remaining= FFMAX(remaining, 0);
290 if(s->maxsize>=0 && remaining+1 < size){
291 av_log(0, AV_LOG_ERROR, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
298 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
301 int orig_size = size;
302 size= ffio_limit(s, size);
304 ret= av_new_packet(pkt, size);
309 pkt->pos= avio_tell(s);
311 ret= avio_read(s, pkt->data, size);
315 av_shrink_packet(pkt, ret);
316 if (pkt->size < orig_size)
317 pkt->flags |= AV_PKT_FLAG_CORRUPT;
322 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
327 return av_get_packet(s, pkt, size);
328 old_size = pkt->size;
329 ret = av_grow_packet(pkt, size);
332 ret = avio_read(s, pkt->data + old_size, size);
333 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
338 int av_filename_number_test(const char *filename)
341 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
344 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
346 AVProbeData lpd = *pd;
347 AVInputFormat *fmt1 = NULL, *fmt;
348 int score, nodat = 0, score_max=0;
350 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
351 int id3len = ff_id3v2_tag_len(lpd.buf);
352 if (lpd.buf_size > id3len + 16) {
354 lpd.buf_size -= id3len;
360 while ((fmt1 = av_iformat_next(fmt1))) {
361 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
364 if (fmt1->read_probe) {
365 score = fmt1->read_probe(&lpd);
366 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
367 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
368 } else if (fmt1->extensions) {
369 if (av_match_ext(lpd.filename, fmt1->extensions)) {
373 if (score > score_max) {
376 }else if (score == score_max)
379 *score_ret= score_max;
384 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
387 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
388 if(score_ret > *score_max){
389 *score_max= score_ret;
395 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
397 return av_probe_input_format2(pd, is_opened, &score);
400 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
402 static const struct {
403 const char *name; enum CodecID id; enum AVMediaType type;
405 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
406 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
407 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
408 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
409 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
410 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
411 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
412 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
413 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
417 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
421 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
422 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
423 for (i = 0; fmt_id_type[i].name; i++) {
424 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
425 st->codec->codec_id = fmt_id_type[i].id;
426 st->codec->codec_type = fmt_id_type[i].type;
434 /************************************************************/
435 /* input media file */
437 int av_demuxer_open(AVFormatContext *ic){
440 if (ic->iformat->read_header) {
441 err = ic->iformat->read_header(ic);
446 if (ic->pb && !ic->data_offset)
447 ic->data_offset = avio_tell(ic->pb);
453 /** size of probe buffer, for guessing file type from file contents */
454 #define PROBE_BUF_MIN 2048
455 #define PROBE_BUF_MAX (1<<20)
457 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
458 const char *filename, void *logctx,
459 unsigned int offset, unsigned int max_probe_size)
461 AVProbeData pd = { filename ? filename : "", NULL, -offset };
462 unsigned char *buf = NULL;
463 int ret = 0, probe_size;
465 if (!max_probe_size) {
466 max_probe_size = PROBE_BUF_MAX;
467 } else if (max_probe_size > PROBE_BUF_MAX) {
468 max_probe_size = PROBE_BUF_MAX;
469 } else if (max_probe_size < PROBE_BUF_MIN) {
470 return AVERROR(EINVAL);
473 if (offset >= max_probe_size) {
474 return AVERROR(EINVAL);
477 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
478 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
479 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
480 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
483 if (probe_size < offset) {
487 /* read probe data */
488 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
491 return AVERROR(ENOMEM);
494 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
495 /* fail if error was not end of file, otherwise, lower score */
496 if (ret != AVERROR_EOF) {
501 ret = 0; /* error was end of file, nothing read */
504 pd.buf = &buf[offset];
506 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
508 /* guess file format */
509 *fmt = av_probe_input_format2(&pd, 1, &score);
511 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
512 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
514 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
520 return AVERROR_INVALIDDATA;
523 /* rewind. reuse probe buffer to avoid seeking */
524 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
530 /* open input file and probe the format if necessary */
531 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
534 AVProbeData pd = {filename, NULL, 0};
537 s->flags |= AVFMT_FLAG_CUSTOM_IO;
539 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
540 else if (s->iformat->flags & AVFMT_NOFILE)
541 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
542 "will be ignored with AVFMT_NOFILE format.\n");
546 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
547 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
550 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
551 &s->interrupt_callback, options)) < 0)
555 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
558 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
559 AVPacketList **plast_pktl){
560 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
565 (*plast_pktl)->next = pktl;
567 *packet_buffer = pktl;
569 /* add the packet in the buffered packet list */
575 static void queue_attached_pictures(AVFormatContext *s)
578 for (i = 0; i < s->nb_streams; i++)
579 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
580 s->streams[i]->discard < AVDISCARD_ALL) {
581 AVPacket copy = s->streams[i]->attached_pic;
582 copy.destruct = NULL;
583 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
587 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
589 AVFormatContext *s = *ps;
591 AVDictionary *tmp = NULL;
592 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
594 if (!s && !(s = avformat_alloc_context()))
595 return AVERROR(ENOMEM);
597 av_log(0, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
598 return AVERROR(EINVAL);
604 av_dict_copy(&tmp, *options, 0);
606 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
609 if ((ret = init_input(s, filename, &tmp)) < 0)
612 /* check filename in case an image number is expected */
613 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
614 if (!av_filename_number_test(filename)) {
615 ret = AVERROR(EINVAL);
620 s->duration = s->start_time = AV_NOPTS_VALUE;
621 av_strlcpy(s->filename, filename, sizeof(s->filename));
623 /* allocate private data */
624 if (s->iformat->priv_data_size > 0) {
625 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
626 ret = AVERROR(ENOMEM);
629 if (s->iformat->priv_class) {
630 *(const AVClass**)s->priv_data = s->iformat->priv_class;
631 av_opt_set_defaults(s->priv_data);
632 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
637 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
639 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
641 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
642 if ((ret = s->iformat->read_header(s)) < 0)
645 if (id3v2_extra_meta &&
646 (ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
648 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
650 queue_attached_pictures(s);
652 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
653 s->data_offset = avio_tell(s->pb);
655 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
658 av_dict_free(options);
665 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
667 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
669 avformat_free_context(s);
674 /*******************************************************/
676 static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
678 if(st->request_probe>0){
679 AVProbeData *pd = &st->probe_data;
681 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
685 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
686 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
687 pd->buf_size += pkt->size;
688 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
690 st->probe_packets = 0;
693 end= s->raw_packet_buffer_remaining_size <= 0
694 || st->probe_packets<=0;
696 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
697 int score= set_codec_from_probe_data(s, st, pd);
698 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
702 st->request_probe= -1;
703 if(st->codec->codec_id != CODEC_ID_NONE){
704 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
706 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
712 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
718 AVPacketList *pktl = s->raw_packet_buffer;
722 st = s->streams[pkt->stream_index];
723 if(st->request_probe <= 0){
724 s->raw_packet_buffer = pktl->next;
725 s->raw_packet_buffer_remaining_size += pkt->size;
732 ret= s->iformat->read_packet(s, pkt);
734 if (!pktl || ret == AVERROR(EAGAIN))
736 for (i = 0; i < s->nb_streams; i++) {
738 if (st->probe_packets) {
739 probe_codec(s, st, NULL);
741 av_assert0(st->request_probe <= 0);
746 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
747 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
748 av_log(s, AV_LOG_WARNING,
749 "Dropped corrupted packet (stream = %d)\n",
755 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
756 av_packet_merge_side_data(pkt);
758 if(pkt->stream_index >= (unsigned)s->nb_streams){
759 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
763 st= s->streams[pkt->stream_index];
765 switch(st->codec->codec_type){
766 case AVMEDIA_TYPE_VIDEO:
767 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
769 case AVMEDIA_TYPE_AUDIO:
770 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
772 case AVMEDIA_TYPE_SUBTITLE:
773 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
777 if(!pktl && st->request_probe <= 0)
780 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
781 s->raw_packet_buffer_remaining_size -= pkt->size;
783 probe_codec(s, st, pkt);
787 #if FF_API_READ_PACKET
788 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
790 return ff_read_packet(s, pkt);
795 /**********************************************************/
797 static int determinable_frame_size(AVCodecContext *avctx)
799 if (/*avctx->codec_id == CODEC_ID_AAC ||*/
800 avctx->codec_id == CODEC_ID_MP1 ||
801 avctx->codec_id == CODEC_ID_MP2 ||
802 avctx->codec_id == CODEC_ID_MP3/* ||
803 avctx->codec_id == CODEC_ID_CELT*/)
809 * Get the number of samples of an audio frame. Return -1 on error.
811 static int get_audio_frame_size(AVCodecContext *enc, int size, int mux)
815 /* give frame_size priority if demuxing */
816 if (!mux && enc->frame_size > 1)
817 return enc->frame_size;
819 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
822 /* fallback to using frame_size if muxing */
823 if (enc->frame_size > 1)
824 return enc->frame_size;
831 * Return the frame duration in seconds. Return 0 if not available.
833 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
834 AVCodecParserContext *pc, AVPacket *pkt)
840 switch(st->codec->codec_type) {
841 case AVMEDIA_TYPE_VIDEO:
842 if (st->r_frame_rate.num && !pc) {
843 *pnum = st->r_frame_rate.den;
844 *pden = st->r_frame_rate.num;
845 } else if(st->time_base.num*1000LL > st->time_base.den) {
846 *pnum = st->time_base.num;
847 *pden = st->time_base.den;
848 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
849 *pnum = st->codec->time_base.num;
850 *pden = st->codec->time_base.den;
851 if (pc && pc->repeat_pict) {
852 *pnum = (*pnum) * (1 + pc->repeat_pict);
854 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
855 //Thus if we have no parser in such case leave duration undefined.
856 if(st->codec->ticks_per_frame>1 && !pc){
861 case AVMEDIA_TYPE_AUDIO:
862 frame_size = get_audio_frame_size(st->codec, pkt->size, 0);
863 if (frame_size <= 0 || st->codec->sample_rate <= 0)
866 *pden = st->codec->sample_rate;
873 static int is_intra_only(AVCodecContext *enc){
874 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
876 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
877 switch(enc->codec_id){
879 case CODEC_ID_MJPEGB:
881 case CODEC_ID_PRORES:
882 case CODEC_ID_RAWVIDEO:
884 case CODEC_ID_DVVIDEO:
885 case CODEC_ID_HUFFYUV:
886 case CODEC_ID_FFVHUFF:
891 case CODEC_ID_JPEG2000:
893 case CODEC_ID_UTVIDEO:
901 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
905 if (pktl == s->parse_queue_end)
906 return s->packet_buffer;
910 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
911 int64_t dts, int64_t pts)
913 AVStream *st= s->streams[stream_index];
914 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
916 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
919 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
922 if (is_relative(pts))
923 pts += st->first_dts - RELATIVE_TS_BASE;
925 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
926 if(pktl->pkt.stream_index != stream_index)
928 if(is_relative(pktl->pkt.pts))
929 pktl->pkt.pts += st->first_dts - RELATIVE_TS_BASE;
931 if(is_relative(pktl->pkt.dts))
932 pktl->pkt.dts += st->first_dts - RELATIVE_TS_BASE;
934 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
935 st->start_time= pktl->pkt.pts;
937 if (st->start_time == AV_NOPTS_VALUE)
938 st->start_time = pts;
941 static void update_initial_durations(AVFormatContext *s, AVStream *st,
942 int stream_index, int duration)
944 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
945 int64_t cur_dts= RELATIVE_TS_BASE;
947 if(st->first_dts != AV_NOPTS_VALUE){
948 cur_dts= st->first_dts;
949 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
950 if(pktl->pkt.stream_index == stream_index){
951 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
956 if(pktl && pktl->pkt.dts != st->first_dts) {
957 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s in que\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
961 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in ques\n", av_ts2str(st->first_dts));
964 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
965 st->first_dts = cur_dts;
966 }else if(st->cur_dts != RELATIVE_TS_BASE)
969 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
970 if(pktl->pkt.stream_index != stream_index)
972 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
973 && !pktl->pkt.duration){
974 pktl->pkt.dts= cur_dts;
975 if(!st->codec->has_b_frames)
976 pktl->pkt.pts= cur_dts;
977 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
978 pktl->pkt.duration = duration;
981 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
984 st->cur_dts= cur_dts;
987 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
988 AVCodecParserContext *pc, AVPacket *pkt)
990 int num, den, presentation_delayed, delay, i;
993 if (s->flags & AVFMT_FLAG_NOFILLIN)
996 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
997 pkt->dts= AV_NOPTS_VALUE;
999 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1000 //FIXME Set low_delay = 0 when has_b_frames = 1
1001 st->codec->has_b_frames = 1;
1003 /* do we have a video B-frame ? */
1004 delay= st->codec->has_b_frames;
1005 presentation_delayed = 0;
1007 /* XXX: need has_b_frame, but cannot get it if the codec is
1010 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1011 presentation_delayed = 1;
1013 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){
1014 pkt->dts -= 1LL<<st->pts_wrap_bits;
1017 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1018 // we take the conservative approach and discard both
1019 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1020 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1021 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1022 pkt->dts= AV_NOPTS_VALUE;
1025 if (pkt->duration == 0) {
1026 compute_frame_duration(&num, &den, st, pc, pkt);
1028 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1031 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1032 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1034 /* correct timestamps with byte offset if demuxers only have timestamps
1035 on packet boundaries */
1036 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1037 /* this will estimate bitrate based on this frame's duration and size */
1038 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1039 if(pkt->pts != AV_NOPTS_VALUE)
1041 if(pkt->dts != AV_NOPTS_VALUE)
1045 if (pc && pc->dts_sync_point >= 0) {
1046 // we have synchronization info from the parser
1047 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1049 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1050 if (pkt->dts != AV_NOPTS_VALUE) {
1051 // got DTS from the stream, update reference timestamp
1052 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1053 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1054 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1055 // compute DTS based on reference timestamp
1056 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1057 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1059 if (pc->dts_sync_point > 0)
1060 st->reference_dts = pkt->dts; // new reference
1064 /* This may be redundant, but it should not hurt. */
1065 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1066 presentation_delayed = 1;
1068 // av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1069 // presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1070 /* interpolate PTS and DTS if they are not present */
1071 //We skip H264 currently because delay and has_b_frames are not reliably set
1072 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1073 if (presentation_delayed) {
1074 /* DTS = decompression timestamp */
1075 /* PTS = presentation timestamp */
1076 if (pkt->dts == AV_NOPTS_VALUE)
1077 pkt->dts = st->last_IP_pts;
1078 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1079 if (pkt->dts == AV_NOPTS_VALUE)
1080 pkt->dts = st->cur_dts;
1082 /* this is tricky: the dts must be incremented by the duration
1083 of the frame we are displaying, i.e. the last I- or P-frame */
1084 if (st->last_IP_duration == 0)
1085 st->last_IP_duration = pkt->duration;
1086 if(pkt->dts != AV_NOPTS_VALUE)
1087 st->cur_dts = pkt->dts + st->last_IP_duration;
1088 st->last_IP_duration = pkt->duration;
1089 st->last_IP_pts= pkt->pts;
1090 /* cannot compute PTS if not present (we can compute it only
1091 by knowing the future */
1092 } else if (pkt->pts != AV_NOPTS_VALUE ||
1093 pkt->dts != AV_NOPTS_VALUE ||
1095 int duration = pkt->duration;
1097 if(pkt->pts != AV_NOPTS_VALUE && duration){
1098 int64_t old_diff= FFABS(st->cur_dts - duration - pkt->pts);
1099 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1100 if( old_diff < new_diff && old_diff < (duration>>3)
1101 && (!strcmp(s->iformat->name, "mpeg") ||
1102 !strcmp(s->iformat->name, "mpegts"))){
1103 pkt->pts += duration;
1104 av_log(s, AV_LOG_WARNING, "Adjusting PTS forward\n");
1105 // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%s size:%d\n",
1106 // pkt->stream_index, old_diff, new_diff, pkt->duration, av_ts2str(st->cur_dts), pkt->size);
1110 /* presentation is not delayed : PTS and DTS are the same */
1111 if (pkt->pts == AV_NOPTS_VALUE)
1112 pkt->pts = pkt->dts;
1113 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1115 if (pkt->pts == AV_NOPTS_VALUE)
1116 pkt->pts = st->cur_dts;
1117 pkt->dts = pkt->pts;
1118 if (pkt->pts != AV_NOPTS_VALUE)
1119 st->cur_dts = pkt->pts + duration;
1123 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1124 st->pts_buffer[0]= pkt->pts;
1125 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1126 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1127 if(pkt->dts == AV_NOPTS_VALUE)
1128 pkt->dts= st->pts_buffer[0];
1129 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1130 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1132 if(pkt->dts > st->cur_dts)
1133 st->cur_dts = pkt->dts;
1136 // av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1137 // presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1140 if(is_intra_only(st->codec))
1141 pkt->flags |= AV_PKT_FLAG_KEY;
1143 pkt->convergence_duration = pc->convergence_duration;
1146 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1149 AVPacketList *pktl = *pkt_buf;
1150 *pkt_buf = pktl->next;
1151 av_free_packet(&pktl->pkt);
1154 *pkt_buf_end = NULL;
1158 * Parse a packet, add all split parts to parse_queue
1160 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1162 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1164 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1165 AVStream *st = s->streams[stream_index];
1166 uint8_t *data = pkt ? pkt->data : NULL;
1167 int size = pkt ? pkt->size : 0;
1168 int ret = 0, got_output = 0;
1171 av_init_packet(&flush_pkt);
1174 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1175 // preserve 0-size sync packets
1176 compute_pkt_fields(s, st, st->parser, pkt);
1179 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1182 av_init_packet(&out_pkt);
1183 len = av_parser_parse2(st->parser, st->codec,
1184 &out_pkt.data, &out_pkt.size, data, size,
1185 pkt->pts, pkt->dts, pkt->pos);
1187 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1188 /* increment read pointer */
1192 got_output = !!out_pkt.size;
1197 /* set the duration */
1198 out_pkt.duration = 0;
1199 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1200 if (st->codec->sample_rate > 0) {
1201 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1202 (AVRational){ 1, st->codec->sample_rate },
1206 } else if (st->codec->time_base.num != 0 &&
1207 st->codec->time_base.den != 0) {
1208 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1209 st->codec->time_base,
1214 out_pkt.stream_index = st->index;
1215 out_pkt.pts = st->parser->pts;
1216 out_pkt.dts = st->parser->dts;
1217 out_pkt.pos = st->parser->pos;
1219 if (st->parser->key_frame == 1 ||
1220 (st->parser->key_frame == -1 &&
1221 st->parser->pict_type == AV_PICTURE_TYPE_I))
1222 out_pkt.flags |= AV_PKT_FLAG_KEY;
1224 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1225 out_pkt.flags |= AV_PKT_FLAG_KEY;
1227 compute_pkt_fields(s, st, st->parser, &out_pkt);
1229 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1230 out_pkt.flags & AV_PKT_FLAG_KEY) {
1231 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? out_pkt.pos : st->parser->frame_offset;
1232 ff_reduce_index(s, st->index);
1233 av_add_index_entry(st, pos, out_pkt.dts,
1234 0, 0, AVINDEX_KEYFRAME);
1237 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1238 out_pkt.destruct = pkt->destruct;
1239 pkt->destruct = NULL;
1241 if ((ret = av_dup_packet(&out_pkt)) < 0)
1244 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1245 av_free_packet(&out_pkt);
1246 ret = AVERROR(ENOMEM);
1252 /* end of the stream => close and free the parser */
1253 if (pkt == &flush_pkt) {
1254 av_parser_close(st->parser);
1259 av_free_packet(pkt);
1263 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1264 AVPacketList **pkt_buffer_end,
1268 av_assert0(*pkt_buffer);
1271 *pkt_buffer = pktl->next;
1273 *pkt_buffer_end = NULL;
1278 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1280 int ret = 0, i, got_packet = 0;
1282 av_init_packet(pkt);
1284 while (!got_packet && !s->parse_queue) {
1288 /* read next packet */
1289 ret = ff_read_packet(s, &cur_pkt);
1291 if (ret == AVERROR(EAGAIN))
1293 /* flush the parsers */
1294 for(i = 0; i < s->nb_streams; i++) {
1296 if (st->parser && st->need_parsing)
1297 parse_packet(s, NULL, st->index);
1299 /* all remaining packets are now in parse_queue =>
1300 * really terminate parsing */
1304 st = s->streams[cur_pkt.stream_index];
1306 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1307 cur_pkt.dts != AV_NOPTS_VALUE &&
1308 cur_pkt.pts < cur_pkt.dts) {
1309 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1310 cur_pkt.stream_index,
1311 av_ts2str(cur_pkt.pts),
1312 av_ts2str(cur_pkt.dts),
1315 if (s->debug & FF_FDEBUG_TS)
1316 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1317 cur_pkt.stream_index,
1318 av_ts2str(cur_pkt.pts),
1319 av_ts2str(cur_pkt.dts),
1324 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1325 st->parser = av_parser_init(st->codec->codec_id);
1327 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1328 "%s, packets or times may be invalid.\n",
1329 avcodec_get_name(st->codec->codec_id));
1330 /* no parser available: just output the raw packets */
1331 st->need_parsing = AVSTREAM_PARSE_NONE;
1332 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1333 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1334 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1335 st->parser->flags |= PARSER_FLAG_ONCE;
1336 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1337 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1341 if (!st->need_parsing || !st->parser) {
1342 /* no parsing needed: we just output the packet as is */
1344 compute_pkt_fields(s, st, NULL, pkt);
1345 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1346 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1347 ff_reduce_index(s, st->index);
1348 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1351 } else if (st->discard < AVDISCARD_ALL) {
1352 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1356 av_free_packet(&cur_pkt);
1358 if (pkt->flags & AV_PKT_FLAG_KEY)
1359 st->skip_to_keyframe = 0;
1360 if (st->skip_to_keyframe) {
1361 av_free_packet(&cur_pkt);
1366 if (!got_packet && s->parse_queue)
1367 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1369 if(s->debug & FF_FDEBUG_TS)
1370 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1372 av_ts2str(pkt->pts),
1373 av_ts2str(pkt->dts),
1381 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1383 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1388 ret = s->packet_buffer ? read_from_packet_buffer(&s->packet_buffer,
1389 &s->packet_buffer_end,
1391 read_frame_internal(s, pkt);
1396 AVPacketList *pktl = s->packet_buffer;
1399 AVPacket *next_pkt = &pktl->pkt;
1401 if (next_pkt->dts != AV_NOPTS_VALUE) {
1402 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1403 // last dts seen for this stream. if any of packets following
1404 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1405 int64_t last_dts = next_pkt->dts;
1406 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1407 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1408 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1409 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1410 next_pkt->pts = pktl->pkt.dts;
1412 if (last_dts != AV_NOPTS_VALUE) {
1413 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1414 last_dts = pktl->pkt.dts;
1419 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1420 // Fixing the last reference frame had none pts issue (For MXF etc).
1421 // We only do this when
1423 // 2. we are not able to resolve a pts value for current packet.
1424 // 3. the packets for this stream at the end of the files had valid dts.
1425 next_pkt->pts = last_dts + next_pkt->duration;
1427 pktl = s->packet_buffer;
1430 /* read packet from packet buffer, if there is data */
1431 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1432 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1433 ret = read_from_packet_buffer(&s->packet_buffer,
1434 &s->packet_buffer_end, pkt);
1439 ret = read_frame_internal(s, pkt);
1441 if (pktl && ret != AVERROR(EAGAIN)) {
1448 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1449 &s->packet_buffer_end)) < 0)
1450 return AVERROR(ENOMEM);
1454 if (is_relative(pkt->dts))
1455 pkt->dts -= RELATIVE_TS_BASE;
1456 if (is_relative(pkt->pts))
1457 pkt->pts -= RELATIVE_TS_BASE;
1461 /* XXX: suppress the packet queue */
1462 static void flush_packet_queue(AVFormatContext *s)
1464 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1465 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1466 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1468 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1471 /*******************************************************/
1474 int av_find_default_stream_index(AVFormatContext *s)
1476 int first_audio_index = -1;
1480 if (s->nb_streams <= 0)
1482 for(i = 0; i < s->nb_streams; i++) {
1484 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1485 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1488 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1489 first_audio_index = i;
1491 return first_audio_index >= 0 ? first_audio_index : 0;
1495 * Flush the frame reader.
1497 void ff_read_frame_flush(AVFormatContext *s)
1502 flush_packet_queue(s);
1504 /* for each stream, reset read state */
1505 for(i = 0; i < s->nb_streams; i++) {
1509 av_parser_close(st->parser);
1512 st->last_IP_pts = AV_NOPTS_VALUE;
1513 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1514 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1515 st->reference_dts = AV_NOPTS_VALUE;
1517 st->probe_packets = MAX_PROBE_PACKETS;
1519 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1520 st->pts_buffer[j]= AV_NOPTS_VALUE;
1524 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1528 for(i = 0; i < s->nb_streams; i++) {
1529 AVStream *st = s->streams[i];
1531 st->cur_dts = av_rescale(timestamp,
1532 st->time_base.den * (int64_t)ref_st->time_base.num,
1533 st->time_base.num * (int64_t)ref_st->time_base.den);
1537 void ff_reduce_index(AVFormatContext *s, int stream_index)
1539 AVStream *st= s->streams[stream_index];
1540 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1542 if((unsigned)st->nb_index_entries >= max_entries){
1544 for(i=0; 2*i<st->nb_index_entries; i++)
1545 st->index_entries[i]= st->index_entries[2*i];
1546 st->nb_index_entries= i;
1550 int ff_add_index_entry(AVIndexEntry **index_entries,
1551 int *nb_index_entries,
1552 unsigned int *index_entries_allocated_size,
1553 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1555 AVIndexEntry *entries, *ie;
1558 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1561 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1562 timestamp -= RELATIVE_TS_BASE;
1564 entries = av_fast_realloc(*index_entries,
1565 index_entries_allocated_size,
1566 (*nb_index_entries + 1) *
1567 sizeof(AVIndexEntry));
1571 *index_entries= entries;
1573 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1576 index= (*nb_index_entries)++;
1577 ie= &entries[index];
1578 assert(index==0 || ie[-1].timestamp < timestamp);
1580 ie= &entries[index];
1581 if(ie->timestamp != timestamp){
1582 if(ie->timestamp <= timestamp)
1584 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1585 (*nb_index_entries)++;
1586 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1587 distance= ie->min_distance;
1591 ie->timestamp = timestamp;
1592 ie->min_distance= distance;
1599 int av_add_index_entry(AVStream *st,
1600 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1602 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1603 &st->index_entries_allocated_size, pos,
1604 timestamp, size, distance, flags);
1607 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1608 int64_t wanted_timestamp, int flags)
1616 //optimize appending index entries at the end
1617 if(b && entries[b-1].timestamp < wanted_timestamp)
1622 timestamp = entries[m].timestamp;
1623 if(timestamp >= wanted_timestamp)
1625 if(timestamp <= wanted_timestamp)
1628 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1630 if(!(flags & AVSEEK_FLAG_ANY)){
1631 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1632 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1641 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1644 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1645 wanted_timestamp, flags);
1648 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1650 AVInputFormat *avif= s->iformat;
1651 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1652 int64_t ts_min, ts_max, ts;
1657 if (stream_index < 0)
1660 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1663 ts_min= AV_NOPTS_VALUE;
1664 pos_limit= -1; //gcc falsely says it may be uninitialized
1666 st= s->streams[stream_index];
1667 if(st->index_entries){
1670 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()
1671 index= FFMAX(index, 0);
1672 e= &st->index_entries[index];
1674 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1676 ts_min= e->timestamp;
1677 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1678 pos_min, av_ts2str(ts_min));
1683 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1684 assert(index < st->nb_index_entries);
1686 e= &st->index_entries[index];
1687 assert(e->timestamp >= target_ts);
1689 ts_max= e->timestamp;
1690 pos_limit= pos_max - e->min_distance;
1691 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1692 pos_max, pos_limit, av_ts2str(ts_max));
1696 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1701 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1704 ff_read_frame_flush(s);
1705 ff_update_cur_dts(s, st, ts);
1710 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1711 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1712 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1713 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1716 int64_t start_pos, filesize;
1719 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1721 if(ts_min == AV_NOPTS_VALUE){
1722 pos_min = s->data_offset;
1723 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1724 if (ts_min == AV_NOPTS_VALUE)
1728 if(ts_min >= target_ts){
1733 if(ts_max == AV_NOPTS_VALUE){
1735 filesize = avio_size(s->pb);
1736 pos_max = filesize - 1;
1739 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1741 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1742 if (ts_max == AV_NOPTS_VALUE)
1746 int64_t tmp_pos= pos_max + 1;
1747 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1748 if(tmp_ts == AV_NOPTS_VALUE)
1752 if(tmp_pos >= filesize)
1758 if(ts_max <= target_ts){
1763 if(ts_min > ts_max){
1765 }else if(ts_min == ts_max){
1770 while (pos_min < pos_limit) {
1771 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1772 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1773 assert(pos_limit <= pos_max);
1776 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1777 // interpolate position (better than dichotomy)
1778 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1779 + pos_min - approximate_keyframe_distance;
1780 }else if(no_change==1){
1781 // bisection, if interpolation failed to change min or max pos last time
1782 pos = (pos_min + pos_limit)>>1;
1784 /* linear search if bisection failed, can only happen if there
1785 are very few or no keyframes between min/max */
1790 else if(pos > pos_limit)
1794 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1799 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1800 pos_min, pos, pos_max,
1801 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1802 pos_limit, start_pos, no_change);
1803 if(ts == AV_NOPTS_VALUE){
1804 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1807 assert(ts != AV_NOPTS_VALUE);
1808 if (target_ts <= ts) {
1809 pos_limit = start_pos - 1;
1813 if (target_ts >= ts) {
1819 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1820 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1823 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1825 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1826 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1827 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1833 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1834 int64_t pos_min, pos_max;
1836 pos_min = s->data_offset;
1837 pos_max = avio_size(s->pb) - 1;
1839 if (pos < pos_min) pos= pos_min;
1840 else if(pos > pos_max) pos= pos_max;
1842 avio_seek(s->pb, pos, SEEK_SET);
1847 static int seek_frame_generic(AVFormatContext *s,
1848 int stream_index, int64_t timestamp, int flags)
1855 st = s->streams[stream_index];
1857 index = av_index_search_timestamp(st, timestamp, flags);
1859 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1862 if(index < 0 || index==st->nb_index_entries-1){
1866 if(st->nb_index_entries){
1867 assert(st->index_entries);
1868 ie= &st->index_entries[st->nb_index_entries-1];
1869 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1871 ff_update_cur_dts(s, st, ie->timestamp);
1873 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1879 read_status = av_read_frame(s, &pkt);
1880 } while (read_status == AVERROR(EAGAIN));
1881 if (read_status < 0)
1883 av_free_packet(&pkt);
1884 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1885 if(pkt.flags & AV_PKT_FLAG_KEY)
1887 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1888 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);
1893 index = av_index_search_timestamp(st, timestamp, flags);
1898 ff_read_frame_flush(s);
1899 AV_NOWARN_DEPRECATED(
1900 if (s->iformat->read_seek){
1901 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1905 ie = &st->index_entries[index];
1906 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1908 ff_update_cur_dts(s, st, ie->timestamp);
1913 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1914 int64_t timestamp, int flags)
1919 if (flags & AVSEEK_FLAG_BYTE) {
1920 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1922 ff_read_frame_flush(s);
1923 return seek_frame_byte(s, stream_index, timestamp, flags);
1926 if(stream_index < 0){
1927 stream_index= av_find_default_stream_index(s);
1928 if(stream_index < 0)
1931 st= s->streams[stream_index];
1932 /* timestamp for default must be expressed in AV_TIME_BASE units */
1933 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1936 /* first, we try the format specific seek */
1937 AV_NOWARN_DEPRECATED(
1938 if (s->iformat->read_seek) {
1939 ff_read_frame_flush(s);
1940 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1948 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1949 ff_read_frame_flush(s);
1950 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1951 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1952 ff_read_frame_flush(s);
1953 return seek_frame_generic(s, stream_index, timestamp, flags);
1959 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1961 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
1964 queue_attached_pictures(s);
1969 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1971 if(min_ts > ts || max_ts < ts)
1974 if (s->iformat->read_seek2) {
1976 ff_read_frame_flush(s);
1977 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1980 queue_attached_pictures(s);
1984 if(s->iformat->read_timestamp){
1985 //try to seek via read_timestamp()
1988 //Fallback to old API if new is not implemented but old is
1989 //Note the old has somewat different sematics
1990 AV_NOWARN_DEPRECATED(
1991 if (s->iformat->read_seek || 1) {
1992 int dir = (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0);
1993 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
1994 if (ret<0 && ts != min_ts && max_ts != ts) {
1995 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
1997 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2003 // try some generic seek like seek_frame_generic() but with new ts semantics
2006 /*******************************************************/
2009 * Return TRUE if the stream has accurate duration in any stream.
2011 * @return TRUE if the stream has accurate duration for at least one component.
2013 static int has_duration(AVFormatContext *ic)
2018 for(i = 0;i < ic->nb_streams; i++) {
2019 st = ic->streams[i];
2020 if (st->duration != AV_NOPTS_VALUE)
2023 if (ic->duration != AV_NOPTS_VALUE)
2029 * Estimate the stream timings from the one of each components.
2031 * Also computes the global bitrate if possible.
2033 static void update_stream_timings(AVFormatContext *ic)
2035 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2036 int64_t duration, duration1, filesize;
2040 start_time = INT64_MAX;
2041 start_time_text = INT64_MAX;
2042 end_time = INT64_MIN;
2043 duration = INT64_MIN;
2044 for(i = 0;i < ic->nb_streams; i++) {
2045 st = ic->streams[i];
2046 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2047 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2048 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2049 if (start_time1 < start_time_text)
2050 start_time_text = start_time1;
2052 start_time = FFMIN(start_time, start_time1);
2053 if (st->duration != AV_NOPTS_VALUE) {
2054 end_time1 = start_time1
2055 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2056 end_time = FFMAX(end_time, end_time1);
2059 if (st->duration != AV_NOPTS_VALUE) {
2060 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2061 duration = FFMAX(duration, duration1);
2064 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2065 start_time = start_time_text;
2066 if (start_time != INT64_MAX) {
2067 ic->start_time = start_time;
2068 if (end_time != INT64_MIN)
2069 duration = FFMAX(duration, end_time - start_time);
2071 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2072 ic->duration = duration;
2074 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2075 /* compute the bitrate */
2076 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2077 (double)ic->duration;
2081 static void fill_all_stream_timings(AVFormatContext *ic)
2086 update_stream_timings(ic);
2087 for(i = 0;i < ic->nb_streams; i++) {
2088 st = ic->streams[i];
2089 if (st->start_time == AV_NOPTS_VALUE) {
2090 if(ic->start_time != AV_NOPTS_VALUE)
2091 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2092 if(ic->duration != AV_NOPTS_VALUE)
2093 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2098 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2100 int64_t filesize, duration;
2104 /* if bit_rate is already set, we believe it */
2105 if (ic->bit_rate <= 0) {
2107 for(i=0;i<ic->nb_streams;i++) {
2108 st = ic->streams[i];
2109 if (st->codec->bit_rate > 0)
2110 bit_rate += st->codec->bit_rate;
2112 ic->bit_rate = bit_rate;
2115 /* if duration is already set, we believe it */
2116 if (ic->duration == AV_NOPTS_VALUE &&
2117 ic->bit_rate != 0) {
2118 filesize = ic->pb ? avio_size(ic->pb) : 0;
2120 for(i = 0; i < ic->nb_streams; i++) {
2121 st = ic->streams[i];
2122 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2123 if (st->duration == AV_NOPTS_VALUE)
2124 st->duration = duration;
2130 #define DURATION_MAX_READ_SIZE 250000
2131 #define DURATION_MAX_RETRY 3
2133 /* only usable for MPEG-PS streams */
2134 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2136 AVPacket pkt1, *pkt = &pkt1;
2138 int read_size, i, ret;
2140 int64_t filesize, offset, duration;
2143 /* flush packet queue */
2144 flush_packet_queue(ic);
2146 for (i=0; i<ic->nb_streams; i++) {
2147 st = ic->streams[i];
2148 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2149 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2152 av_parser_close(st->parser);
2157 /* estimate the end time (duration) */
2158 /* XXX: may need to support wrapping */
2159 filesize = ic->pb ? avio_size(ic->pb) : 0;
2160 end_time = AV_NOPTS_VALUE;
2162 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2166 avio_seek(ic->pb, offset, SEEK_SET);
2169 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2173 ret = ff_read_packet(ic, pkt);
2174 } while(ret == AVERROR(EAGAIN));
2177 read_size += pkt->size;
2178 st = ic->streams[pkt->stream_index];
2179 if (pkt->pts != AV_NOPTS_VALUE &&
2180 (st->start_time != AV_NOPTS_VALUE ||
2181 st->first_dts != AV_NOPTS_VALUE)) {
2182 duration = end_time = pkt->pts;
2183 if (st->start_time != AV_NOPTS_VALUE)
2184 duration -= st->start_time;
2186 duration -= st->first_dts;
2188 duration += 1LL<<st->pts_wrap_bits;
2190 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2191 st->duration = duration;
2194 av_free_packet(pkt);
2196 }while( end_time==AV_NOPTS_VALUE
2197 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2198 && ++retry <= DURATION_MAX_RETRY);
2200 fill_all_stream_timings(ic);
2202 avio_seek(ic->pb, old_offset, SEEK_SET);
2203 for (i=0; i<ic->nb_streams; i++) {
2205 st->cur_dts= st->first_dts;
2206 st->last_IP_pts = AV_NOPTS_VALUE;
2207 st->reference_dts = AV_NOPTS_VALUE;
2211 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2215 /* get the file size, if possible */
2216 if (ic->iformat->flags & AVFMT_NOFILE) {
2219 file_size = avio_size(ic->pb);
2220 file_size = FFMAX(0, file_size);
2223 if ((!strcmp(ic->iformat->name, "mpeg") ||
2224 !strcmp(ic->iformat->name, "mpegts")) &&
2225 file_size && ic->pb->seekable) {
2226 /* get accurate estimate from the PTSes */
2227 estimate_timings_from_pts(ic, old_offset);
2228 } else if (has_duration(ic)) {
2229 /* at least one component has timings - we use them for all
2231 fill_all_stream_timings(ic);
2233 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2234 /* less precise: use bitrate info */
2235 estimate_timings_from_bit_rate(ic);
2237 update_stream_timings(ic);
2241 AVStream av_unused *st;
2242 for(i = 0;i < ic->nb_streams; i++) {
2243 st = ic->streams[i];
2244 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2245 (double) st->start_time / AV_TIME_BASE,
2246 (double) st->duration / AV_TIME_BASE);
2248 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2249 (double) ic->start_time / AV_TIME_BASE,
2250 (double) ic->duration / AV_TIME_BASE,
2251 ic->bit_rate / 1000);
2255 static int has_codec_parameters(AVStream *st)
2257 AVCodecContext *avctx = st->codec;
2259 switch (avctx->codec_type) {
2260 case AVMEDIA_TYPE_AUDIO:
2261 val = avctx->sample_rate && avctx->channels;
2262 if (!avctx->frame_size && determinable_frame_size(avctx))
2264 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2267 case AVMEDIA_TYPE_VIDEO:
2269 if (st->info->found_decoder >= 0 && avctx->pix_fmt == PIX_FMT_NONE)
2272 case AVMEDIA_TYPE_DATA:
2273 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2278 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2281 static int has_decode_delay_been_guessed(AVStream *st)
2283 return st->codec->codec_id != CODEC_ID_H264 ||
2284 st->info->nb_decoded_frames >= 6;
2287 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2288 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2291 int got_picture = 1, ret = 0;
2293 AVPacket pkt = *avpkt;
2295 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2296 AVDictionary *thread_opt = NULL;
2298 codec = st->codec->codec ? st->codec->codec :
2299 avcodec_find_decoder(st->codec->codec_id);
2302 st->info->found_decoder = -1;
2306 /* force thread count to 1 since the h264 decoder will not extract SPS
2307 * and PPS to extradata during multi-threaded decoding */
2308 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2309 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2311 av_dict_free(&thread_opt);
2313 st->info->found_decoder = -1;
2316 st->info->found_decoder = 1;
2317 } else if (!st->info->found_decoder)
2318 st->info->found_decoder = 1;
2320 if (st->info->found_decoder < 0)
2323 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2325 (!has_codec_parameters(st) ||
2326 !has_decode_delay_been_guessed(st) ||
2327 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2329 avcodec_get_frame_defaults(&picture);
2330 switch(st->codec->codec_type) {
2331 case AVMEDIA_TYPE_VIDEO:
2332 ret = avcodec_decode_video2(st->codec, &picture,
2333 &got_picture, &pkt);
2335 case AVMEDIA_TYPE_AUDIO:
2336 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2343 st->info->nb_decoded_frames++;
2349 if(!pkt.data && !got_picture)
2354 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2356 while (tags->id != CODEC_ID_NONE) {
2364 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2367 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2368 if(tag == tags[i].tag)
2371 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2372 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2375 return CODEC_ID_NONE;
2378 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2381 for(i=0; tags && tags[i]; i++){
2382 int tag= ff_codec_get_tag(tags[i], id);
2388 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2391 for(i=0; tags && tags[i]; i++){
2392 enum CodecID id= ff_codec_get_id(tags[i], tag);
2393 if(id!=CODEC_ID_NONE) return id;
2395 return CODEC_ID_NONE;
2398 static void compute_chapters_end(AVFormatContext *s)
2401 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2403 for (i = 0; i < s->nb_chapters; i++)
2404 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2405 AVChapter *ch = s->chapters[i];
2406 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2409 for (j = 0; j < s->nb_chapters; j++) {
2410 AVChapter *ch1 = s->chapters[j];
2411 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2412 if (j != i && next_start > ch->start && next_start < end)
2415 ch->end = (end == INT64_MAX) ? ch->start : end;
2419 static int get_std_framerate(int i){
2420 if(i<60*12) return i*1001;
2421 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2425 * Is the time base unreliable.
2426 * This is a heuristic to balance between quick acceptance of the values in
2427 * the headers vs. some extra checks.
2428 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2429 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2430 * And there are "variable" fps files this needs to detect as well.
2432 static int tb_unreliable(AVCodecContext *c){
2433 if( c->time_base.den >= 101L*c->time_base.num
2434 || c->time_base.den < 5L*c->time_base.num
2435 /* || c->codec_tag == AV_RL32("DIVX")
2436 || c->codec_tag == AV_RL32("XVID")*/
2437 || c->codec_id == CODEC_ID_MPEG2VIDEO
2438 || c->codec_id == CODEC_ID_H264
2444 #if FF_API_FORMAT_PARAMETERS
2445 int av_find_stream_info(AVFormatContext *ic)
2447 return avformat_find_stream_info(ic, NULL);
2451 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2453 int i, count, ret, read_size, j;
2455 AVPacket pkt1, *pkt;
2456 int64_t old_offset = avio_tell(ic->pb);
2457 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2458 int flush_codecs = 1;
2461 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2463 for(i=0;i<ic->nb_streams;i++) {
2465 AVDictionary *thread_opt = NULL;
2466 st = ic->streams[i];
2468 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2469 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2470 /* if(!st->time_base.num)
2472 if(!st->codec->time_base.num)
2473 st->codec->time_base= st->time_base;
2475 //only for the split stuff
2476 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2477 st->parser = av_parser_init(st->codec->codec_id);
2479 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2480 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2481 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2482 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2484 } else if (st->need_parsing) {
2485 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2486 "%s, packets or times may be invalid.\n",
2487 avcodec_get_name(st->codec->codec_id));
2490 codec = st->codec->codec ? st->codec->codec :
2491 avcodec_find_decoder(st->codec->codec_id);
2493 /* force thread count to 1 since the h264 decoder will not extract SPS
2494 * and PPS to extradata during multi-threaded decoding */
2495 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2497 /* Ensure that subtitle_header is properly set. */
2498 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2499 && codec && !st->codec->codec)
2500 avcodec_open2(st->codec, codec, options ? &options[i]
2503 //try to just open decoders, in case this is enough to get parameters
2504 if (!has_codec_parameters(st)) {
2505 if (codec && !st->codec->codec)
2506 avcodec_open2(st->codec, codec, options ? &options[i]
2510 av_dict_free(&thread_opt);
2513 for (i=0; i<ic->nb_streams; i++) {
2514 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2520 if (ff_check_interrupt(&ic->interrupt_callback)){
2522 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2526 /* check if one codec still needs to be handled */
2527 for(i=0;i<ic->nb_streams;i++) {
2528 int fps_analyze_framecount = 20;
2530 st = ic->streams[i];
2531 if (!has_codec_parameters(st))
2533 /* if the timebase is coarse (like the usual millisecond precision
2534 of mkv), we need to analyze more frames to reliably arrive at
2536 if (av_q2d(st->time_base) > 0.0005)
2537 fps_analyze_framecount *= 2;
2538 if (ic->fps_probe_size >= 0)
2539 fps_analyze_framecount = ic->fps_probe_size;
2540 /* variable fps and no guess at the real fps */
2541 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2542 && st->info->duration_count < fps_analyze_framecount
2543 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2545 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2547 if (st->first_dts == AV_NOPTS_VALUE &&
2548 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2549 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2552 if (i == ic->nb_streams) {
2553 /* NOTE: if the format has no header, then we need to read
2554 some packets to get most of the streams, so we cannot
2556 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2557 /* if we found the info for all the codecs, we can stop */
2559 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2564 /* we did not get all the codec info, but we read too much data */
2565 if (read_size >= ic->probesize) {
2567 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2568 for (i = 0; i < ic->nb_streams; i++)
2569 if (!ic->streams[i]->r_frame_rate.num &&
2570 ic->streams[i]->info->duration_count <= 1)
2571 av_log(ic, AV_LOG_WARNING,
2572 "Stream #%d: not enough frames to estimate rate; "
2573 "consider increasing probesize\n", i);
2577 /* NOTE: a new stream can be added there if no header in file
2578 (AVFMTCTX_NOHEADER) */
2579 ret = read_frame_internal(ic, &pkt1);
2580 if (ret == AVERROR(EAGAIN))
2588 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2589 if ((ret = av_dup_packet(pkt)) < 0)
2590 goto find_stream_info_err;
2592 read_size += pkt->size;
2594 st = ic->streams[pkt->stream_index];
2595 if (st->codec_info_nb_frames>1) {
2597 if (st->time_base.den > 0)
2598 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2599 if (st->avg_frame_rate.num > 0)
2600 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));
2602 if (t >= ic->max_analyze_duration) {
2603 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2606 st->info->codec_info_duration += pkt->duration;
2609 int64_t last = st->info->last_dts;
2611 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2612 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2613 int64_t duration= pkt->dts - last;
2615 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2616 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2617 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2618 int framerate= get_std_framerate(i);
2619 double sdts= dts*framerate/(1001*12);
2621 int ticks= lrintf(sdts+j*0.5);
2622 double error= sdts - ticks + j*0.5;
2623 st->info->duration_error[j][0][i] += error;
2624 st->info->duration_error[j][1][i] += error*error;
2627 st->info->duration_count++;
2628 // ignore the first 4 values, they might have some random jitter
2629 if (st->info->duration_count > 3)
2630 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2632 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2633 st->info->last_dts = pkt->dts;
2635 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2636 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2637 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2638 st->codec->extradata_size= i;
2639 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2640 if (!st->codec->extradata)
2641 return AVERROR(ENOMEM);
2642 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2643 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2647 /* if still no information, we try to open the codec and to
2648 decompress the frame. We try to avoid that in most cases as
2649 it takes longer and uses more memory. For MPEG-4, we need to
2650 decompress for QuickTime.
2652 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2653 least one frame of codec data, this makes sure the codec initializes
2654 the channel configuration and does not only trust the values from the container.
2656 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2658 st->codec_info_nb_frames++;
2663 AVPacket empty_pkt = { 0 };
2665 av_init_packet(&empty_pkt);
2667 ret = -1; /* we could not have all the codec parameters before EOF */
2668 for(i=0;i<ic->nb_streams;i++) {
2669 st = ic->streams[i];
2671 /* flush the decoders */
2672 if (st->info->found_decoder == 1) {
2674 err = try_decode_frame(st, &empty_pkt,
2675 (options && i < orig_nb_streams) ?
2676 &options[i] : NULL);
2677 } while (err > 0 && !has_codec_parameters(st));
2680 av_log(ic, AV_LOG_INFO,
2681 "decoding for stream %d failed\n", st->index);
2685 if (!has_codec_parameters(st)){
2687 avcodec_string(buf, sizeof(buf), st->codec, 0);
2688 av_log(ic, AV_LOG_WARNING,
2689 "Could not find codec parameters (%s)\n", buf);
2696 // close codecs which were opened in try_decode_frame()
2697 for(i=0;i<ic->nb_streams;i++) {
2698 st = ic->streams[i];
2699 avcodec_close(st->codec);
2701 for(i=0;i<ic->nb_streams;i++) {
2702 st = ic->streams[i];
2703 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2704 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2705 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2706 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2707 st->codec->codec_tag= tag;
2710 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2711 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2712 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2713 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2714 // the check for tb_unreliable() is not completely correct, since this is not about handling
2715 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2716 // ipmovie.c produces.
2717 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)
2718 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);
2719 if (st->info->duration_count && !st->r_frame_rate.num
2720 && tb_unreliable(st->codec) /*&&
2721 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2722 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2724 double best_error= 0.01;
2726 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2729 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2731 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2734 int n= st->info->duration_count;
2735 double a= st->info->duration_error[k][0][j] / n;
2736 double error= st->info->duration_error[k][1][j]/n - a*a;
2738 if(error < best_error && best_error> 0.000000001){
2740 num = get_std_framerate(j);
2743 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2746 // do not increase frame rate by more than 1 % in order to match a standard rate.
2747 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2748 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2751 if (!st->r_frame_rate.num){
2752 if( st->codec->time_base.den * (int64_t)st->time_base.num
2753 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2754 st->r_frame_rate.num = st->codec->time_base.den;
2755 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2757 st->r_frame_rate.num = st->time_base.den;
2758 st->r_frame_rate.den = st->time_base.num;
2761 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2762 if(!st->codec->bits_per_coded_sample)
2763 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2764 // set stream disposition based on audio service type
2765 switch (st->codec->audio_service_type) {
2766 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2767 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2768 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2769 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2770 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2771 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2772 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2773 st->disposition = AV_DISPOSITION_COMMENT; break;
2774 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2775 st->disposition = AV_DISPOSITION_KARAOKE; break;
2780 estimate_timings(ic, old_offset);
2782 compute_chapters_end(ic);
2784 find_stream_info_err:
2785 for (i=0; i < ic->nb_streams; i++) {
2786 if (ic->streams[i]->codec)
2787 ic->streams[i]->codec->thread_count = 0;
2788 av_freep(&ic->streams[i]->info);
2791 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2795 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2799 for (i = 0; i < ic->nb_programs; i++) {
2800 if (ic->programs[i] == last) {
2804 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2805 if (ic->programs[i]->stream_index[j] == s)
2806 return ic->programs[i];
2812 int av_find_best_stream(AVFormatContext *ic,
2813 enum AVMediaType type,
2814 int wanted_stream_nb,
2816 AVCodec **decoder_ret,
2819 int i, nb_streams = ic->nb_streams;
2820 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2821 unsigned *program = NULL;
2822 AVCodec *decoder = NULL, *best_decoder = NULL;
2824 if (related_stream >= 0 && wanted_stream_nb < 0) {
2825 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2827 program = p->stream_index;
2828 nb_streams = p->nb_stream_indexes;
2831 for (i = 0; i < nb_streams; i++) {
2832 int real_stream_index = program ? program[i] : i;
2833 AVStream *st = ic->streams[real_stream_index];
2834 AVCodecContext *avctx = st->codec;
2835 if (avctx->codec_type != type)
2837 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2839 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2842 decoder = avcodec_find_decoder(st->codec->codec_id);
2845 ret = AVERROR_DECODER_NOT_FOUND;
2849 if (best_count >= st->codec_info_nb_frames)
2851 best_count = st->codec_info_nb_frames;
2852 ret = real_stream_index;
2853 best_decoder = decoder;
2854 if (program && i == nb_streams - 1 && ret < 0) {
2856 nb_streams = ic->nb_streams;
2857 i = 0; /* no related stream found, try again with everything */
2861 *decoder_ret = best_decoder;
2865 /*******************************************************/
2867 int av_read_play(AVFormatContext *s)
2869 if (s->iformat->read_play)
2870 return s->iformat->read_play(s);
2872 return avio_pause(s->pb, 0);
2873 return AVERROR(ENOSYS);
2876 int av_read_pause(AVFormatContext *s)
2878 if (s->iformat->read_pause)
2879 return s->iformat->read_pause(s);
2881 return avio_pause(s->pb, 1);
2882 return AVERROR(ENOSYS);
2885 void avformat_free_context(AVFormatContext *s)
2891 if (s->iformat && s->iformat->priv_class && s->priv_data)
2892 av_opt_free(s->priv_data);
2894 for(i=0;i<s->nb_streams;i++) {
2895 /* free all data in a stream component */
2898 av_parser_close(st->parser);
2900 if (st->attached_pic.data)
2901 av_free_packet(&st->attached_pic);
2902 av_dict_free(&st->metadata);
2903 av_freep(&st->index_entries);
2904 av_freep(&st->codec->extradata);
2905 av_freep(&st->codec->subtitle_header);
2906 av_freep(&st->codec);
2907 av_freep(&st->priv_data);
2908 av_freep(&st->info);
2911 for(i=s->nb_programs-1; i>=0; i--) {
2912 av_dict_free(&s->programs[i]->metadata);
2913 av_freep(&s->programs[i]->stream_index);
2914 av_freep(&s->programs[i]);
2916 av_freep(&s->programs);
2917 av_freep(&s->priv_data);
2918 while(s->nb_chapters--) {
2919 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2920 av_freep(&s->chapters[s->nb_chapters]);
2922 av_freep(&s->chapters);
2923 av_dict_free(&s->metadata);
2924 av_freep(&s->streams);
2928 #if FF_API_CLOSE_INPUT_FILE
2929 void av_close_input_file(AVFormatContext *s)
2931 avformat_close_input(&s);
2935 void avformat_close_input(AVFormatContext **ps)
2937 AVFormatContext *s = *ps;
2938 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2940 flush_packet_queue(s);
2941 if (s->iformat && (s->iformat->read_close))
2942 s->iformat->read_close(s);
2943 avformat_free_context(s);
2949 #if FF_API_NEW_STREAM
2950 AVStream *av_new_stream(AVFormatContext *s, int id)
2952 AVStream *st = avformat_new_stream(s, NULL);
2959 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2965 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2967 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2970 s->streams = streams;
2972 st = av_mallocz(sizeof(AVStream));
2975 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2979 st->info->last_dts = AV_NOPTS_VALUE;
2981 st->codec = avcodec_alloc_context3(c);
2983 /* no default bitrate if decoding */
2984 st->codec->bit_rate = 0;
2986 st->index = s->nb_streams;
2987 st->start_time = AV_NOPTS_VALUE;
2988 st->duration = AV_NOPTS_VALUE;
2989 /* we set the current DTS to 0 so that formats without any timestamps
2990 but durations get some timestamps, formats with some unknown
2991 timestamps have their first few packets buffered and the
2992 timestamps corrected before they are returned to the user */
2993 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
2994 st->first_dts = AV_NOPTS_VALUE;
2995 st->probe_packets = MAX_PROBE_PACKETS;
2997 /* default pts setting is MPEG-like */
2998 avpriv_set_pts_info(st, 33, 1, 90000);
2999 st->last_IP_pts = AV_NOPTS_VALUE;
3000 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3001 st->pts_buffer[i]= AV_NOPTS_VALUE;
3002 st->reference_dts = AV_NOPTS_VALUE;
3004 st->sample_aspect_ratio = (AVRational){0,1};
3006 s->streams[s->nb_streams++] = st;
3010 AVProgram *av_new_program(AVFormatContext *ac, int id)
3012 AVProgram *program=NULL;
3015 av_dlog(ac, "new_program: id=0x%04x\n", id);
3017 for(i=0; i<ac->nb_programs; i++)
3018 if(ac->programs[i]->id == id)
3019 program = ac->programs[i];
3022 program = av_mallocz(sizeof(AVProgram));
3025 dynarray_add(&ac->programs, &ac->nb_programs, program);
3026 program->discard = AVDISCARD_NONE;
3033 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3035 AVChapter *chapter = NULL;
3038 for(i=0; i<s->nb_chapters; i++)
3039 if(s->chapters[i]->id == id)
3040 chapter = s->chapters[i];
3043 chapter= av_mallocz(sizeof(AVChapter));
3046 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3048 av_dict_set(&chapter->metadata, "title", title, 0);
3050 chapter->time_base= time_base;
3051 chapter->start = start;
3057 /************************************************************/
3058 /* output media file */
3060 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3061 const char *format, const char *filename)
3063 AVFormatContext *s = avformat_alloc_context();
3072 oformat = av_guess_format(format, NULL, NULL);
3074 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3075 ret = AVERROR(EINVAL);
3079 oformat = av_guess_format(NULL, filename, NULL);
3081 ret = AVERROR(EINVAL);
3082 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3089 s->oformat = oformat;
3090 if (s->oformat->priv_data_size > 0) {
3091 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3094 if (s->oformat->priv_class) {
3095 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3096 av_opt_set_defaults(s->priv_data);
3099 s->priv_data = NULL;
3102 av_strlcpy(s->filename, filename, sizeof(s->filename));
3106 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3107 ret = AVERROR(ENOMEM);
3109 avformat_free_context(s);
3113 #if FF_API_ALLOC_OUTPUT_CONTEXT
3114 AVFormatContext *avformat_alloc_output_context(const char *format,
3115 AVOutputFormat *oformat, const char *filename)
3117 AVFormatContext *avctx;
3118 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3119 return ret < 0 ? NULL : avctx;
3123 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3125 const AVCodecTag *avctag;
3127 enum CodecID id = CODEC_ID_NONE;
3128 unsigned int tag = 0;
3131 * Check that tag + id is in the table
3132 * If neither is in the table -> OK
3133 * If tag is in the table with another id -> FAIL
3134 * If id is in the table with another tag -> FAIL unless strict < normal
3136 for (n = 0; s->oformat->codec_tag[n]; n++) {
3137 avctag = s->oformat->codec_tag[n];
3138 while (avctag->id != CODEC_ID_NONE) {
3139 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3141 if (id == st->codec->codec_id)
3144 if (avctag->id == st->codec->codec_id)
3149 if (id != CODEC_ID_NONE)
3151 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3156 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3160 AVDictionary *tmp = NULL;
3163 av_dict_copy(&tmp, *options, 0);
3164 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3166 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3167 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3170 // some sanity checks
3171 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3172 av_log(s, AV_LOG_ERROR, "no streams\n");
3173 ret = AVERROR(EINVAL);
3177 for(i=0;i<s->nb_streams;i++) {
3180 switch (st->codec->codec_type) {
3181 case AVMEDIA_TYPE_AUDIO:
3182 if(st->codec->sample_rate<=0){
3183 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3184 ret = AVERROR(EINVAL);
3187 if(!st->codec->block_align)
3188 st->codec->block_align = st->codec->channels *
3189 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3191 case AVMEDIA_TYPE_VIDEO:
3192 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3193 av_log(s, AV_LOG_ERROR, "time base not set\n");
3194 ret = AVERROR(EINVAL);
3197 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3198 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3199 ret = AVERROR(EINVAL);
3202 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3203 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3205 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
3206 "(%d/%d) and encoder layer (%d/%d)\n",
3207 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3208 st->codec->sample_aspect_ratio.num,
3209 st->codec->sample_aspect_ratio.den);
3210 ret = AVERROR(EINVAL);
3216 if(s->oformat->codec_tag){
3217 if( st->codec->codec_tag
3218 && st->codec->codec_id == CODEC_ID_RAWVIDEO
3219 && (av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id) == 0 || av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id) ==MKTAG('r', 'a', 'w', ' '))
3220 && !validate_codec_tag(s, st)){
3221 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi/mov, we override it here
3222 st->codec->codec_tag= 0;
3224 if(st->codec->codec_tag){
3225 if (!validate_codec_tag(s, st)) {
3226 char tagbuf[32], cortag[32];
3227 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3228 av_get_codec_tag_string(cortag, sizeof(cortag), av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id));
3229 av_log(s, AV_LOG_ERROR,
3230 "Tag %s/0x%08x incompatible with output codec id '%d' (%s)\n",
3231 tagbuf, st->codec->codec_tag, st->codec->codec_id, cortag);
3232 ret = AVERROR_INVALIDDATA;
3236 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3239 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3240 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3241 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3244 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3245 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3246 if (!s->priv_data) {
3247 ret = AVERROR(ENOMEM);
3250 if (s->oformat->priv_class) {
3251 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3252 av_opt_set_defaults(s->priv_data);
3253 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3258 /* set muxer identification string */
3259 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3260 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3263 if(s->oformat->write_header){
3264 ret = s->oformat->write_header(s);
3269 /* init PTS generation */
3270 for(i=0;i<s->nb_streams;i++) {
3271 int64_t den = AV_NOPTS_VALUE;
3274 switch (st->codec->codec_type) {
3275 case AVMEDIA_TYPE_AUDIO:
3276 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3278 case AVMEDIA_TYPE_VIDEO:
3279 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3284 if (den != AV_NOPTS_VALUE) {
3286 ret = AVERROR_INVALIDDATA;
3289 frac_init(&st->pts, 0, 0, den);
3294 av_dict_free(options);
3303 //FIXME merge with compute_pkt_fields
3304 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3305 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3306 int num, den, frame_size, i;
3308 av_dlog(s, "compute_pkt_fields2: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
3309 av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
3311 /* duration field */
3312 if (pkt->duration == 0) {
3313 compute_frame_duration(&num, &den, st, NULL, pkt);
3315 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3319 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3322 //XXX/FIXME this is a temporary hack until all encoders output pts
3323 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3326 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
3330 // pkt->pts= st->cur_dts;
3331 pkt->pts= st->pts.val;
3334 //calculate dts from pts
3335 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3336 st->pts_buffer[0]= pkt->pts;
3337 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3338 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3339 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3340 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3342 pkt->dts= st->pts_buffer[0];
3345 if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
3346 ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
3347 st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
3348 av_log(s, AV_LOG_ERROR,
3349 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
3350 st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
3351 return AVERROR(EINVAL);
3353 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3354 av_log(s, AV_LOG_ERROR, "pts (%s) < dts (%s) in stream %d\n",
3355 av_ts2str(pkt->pts), av_ts2str(pkt->dts), st->index);
3356 return AVERROR(EINVAL);
3359 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n", av_ts2str(pkt->pts), av_ts2str(pkt->dts));
3360 st->cur_dts= pkt->dts;
3361 st->pts.val= pkt->dts;
3364 switch (st->codec->codec_type) {
3365 case AVMEDIA_TYPE_AUDIO:
3366 frame_size = get_audio_frame_size(st->codec, pkt->size, 1);
3368 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3369 likely equal to the encoder delay, but it would be better if we
3370 had the real timestamps from the encoder */
3371 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3372 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3375 case AVMEDIA_TYPE_VIDEO:
3376 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3384 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3389 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3390 return s->oformat->write_packet(s, pkt);
3394 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3396 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3399 ret= s->oformat->write_packet(s, pkt);
3402 s->streams[pkt->stream_index]->nb_frames++;
3406 #define CHUNK_START 0x1000
3408 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3409 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3411 AVPacketList **next_point, *this_pktl;
3412 AVStream *st= s->streams[pkt->stream_index];
3413 int chunked= s->max_chunk_size || s->max_chunk_duration;
3415 this_pktl = av_mallocz(sizeof(AVPacketList));
3417 return AVERROR(ENOMEM);
3418 this_pktl->pkt= *pkt;
3419 pkt->destruct= NULL; // do not free original but only the copy
3420 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3422 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3423 next_point = &(st->last_in_packet_buffer->next);
3425 next_point = &s->packet_buffer;
3430 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3431 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3432 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3433 st->interleaver_chunk_size += pkt->size;
3434 st->interleaver_chunk_duration += pkt->duration;
3437 st->interleaver_chunk_size =
3438 st->interleaver_chunk_duration = 0;
3439 this_pktl->pkt.flags |= CHUNK_START;
3443 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3445 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3446 || !compare(s, &(*next_point)->pkt, pkt))){
3447 next_point= &(*next_point)->next;
3452 next_point = &(s->packet_buffer_end->next);
3455 assert(!*next_point);
3457 s->packet_buffer_end= this_pktl;
3460 this_pktl->next= *next_point;
3462 s->streams[pkt->stream_index]->last_in_packet_buffer=
3463 *next_point= this_pktl;
3467 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3469 AVStream *st = s->streams[ pkt ->stream_index];
3470 AVStream *st2= s->streams[ next->stream_index];
3471 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3473 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3474 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);
3475 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);
3477 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
3478 -( 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;
3481 comp= (ts>ts2) - (ts<ts2);
3485 return pkt->stream_index < next->stream_index;
3489 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3490 AVPacket *pkt, int flush)
3493 int stream_count=0, noninterleaved_count=0;
3494 int64_t delta_dts_max = 0;
3498 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3503 for(i=0; i < s->nb_streams; i++) {
3504 if (s->streams[i]->last_in_packet_buffer) {
3506 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3507 ++noninterleaved_count;
3511 if (s->nb_streams == stream_count) {
3514 for(i=0; i < s->nb_streams; i++) {
3515 if (s->streams[i]->last_in_packet_buffer) {
3517 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3518 s->streams[i]->time_base,
3520 av_rescale_q(s->packet_buffer->pkt.dts,
3521 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3523 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3526 if(s->nb_streams == stream_count+noninterleaved_count &&
3527 delta_dts_max > 20*AV_TIME_BASE) {
3528 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3532 if(stream_count && flush){
3533 pktl= s->packet_buffer;
3536 s->packet_buffer= pktl->next;
3537 if(!s->packet_buffer)
3538 s->packet_buffer_end= NULL;
3540 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3541 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3545 av_init_packet(out);
3550 #if FF_API_INTERLEAVE_PACKET
3551 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3552 AVPacket *pkt, int flush)
3554 return ff_interleave_packet_per_dts(s, out, pkt, flush);
3559 * Interleave an AVPacket correctly so it can be muxed.
3560 * @param out the interleaved packet will be output here
3561 * @param in the input packet
3562 * @param flush 1 if no further packets are available as input and all
3563 * remaining packets should be output
3564 * @return 1 if a packet was output, 0 if no packet could be output,
3565 * < 0 if an error occurred
3567 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3568 if (s->oformat->interleave_packet) {
3569 int ret = s->oformat->interleave_packet(s, out, in, flush);
3574 return ff_interleave_packet_per_dts(s, out, in, flush);
3577 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3581 AVStream *st= s->streams[ pkt->stream_index];
3583 //FIXME/XXX/HACK drop zero sized packets
3584 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3587 av_dlog(s, "av_interleaved_write_frame size:%d dts:%s pts:%s\n",
3588 pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
3589 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3592 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3593 return AVERROR(EINVAL);
3595 av_dlog(s, "av_interleaved_write_frame FLUSH\n");
3601 int ret= interleave_packet(s, &opkt, pkt, flush);
3602 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3605 ret= s->oformat->write_packet(s, &opkt);
3607 s->streams[opkt.stream_index]->nb_frames++;
3609 av_free_packet(&opkt);
3614 if(s->pb && s->pb->error)
3615 return s->pb->error;
3619 int av_write_trailer(AVFormatContext *s)
3625 ret= interleave_packet(s, &pkt, NULL, 1);
3626 if(ret<0) //FIXME cleanup needed for ret<0 ?
3631 ret= s->oformat->write_packet(s, &pkt);
3633 s->streams[pkt.stream_index]->nb_frames++;
3635 av_free_packet(&pkt);
3639 if(s->pb && s->pb->error)
3643 if(s->oformat->write_trailer)
3644 ret = s->oformat->write_trailer(s);
3649 ret = s->pb ? s->pb->error : 0;
3650 for(i=0;i<s->nb_streams;i++) {
3651 av_freep(&s->streams[i]->priv_data);
3652 av_freep(&s->streams[i]->index_entries);
3654 if (s->oformat->priv_class)
3655 av_opt_free(s->priv_data);
3656 av_freep(&s->priv_data);
3660 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3661 int64_t *dts, int64_t *wall)
3663 if (!s->oformat || !s->oformat->get_output_timestamp)
3664 return AVERROR(ENOSYS);
3665 s->oformat->get_output_timestamp(s, stream, dts, wall);
3669 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3672 AVProgram *program=NULL;
3675 if (idx >= ac->nb_streams) {
3676 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3680 for(i=0; i<ac->nb_programs; i++){
3681 if(ac->programs[i]->id != progid)
3683 program = ac->programs[i];
3684 for(j=0; j<program->nb_stream_indexes; j++)
3685 if(program->stream_index[j] == idx)
3688 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3691 program->stream_index = tmp;
3692 program->stream_index[program->nb_stream_indexes++] = idx;
3697 static void print_fps(double d, const char *postfix){
3698 uint64_t v= lrintf(d*100);
3699 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3700 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3701 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3704 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3706 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3707 AVDictionaryEntry *tag=NULL;
3709 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3710 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3711 if(strcmp("language", tag->key)){
3712 const char *p = tag->value;
3713 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3716 size_t len = strcspn(p, "\xd\xa");
3717 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3718 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3720 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3721 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3724 av_log(ctx, AV_LOG_INFO, "\n");
3730 /* "user interface" functions */
3731 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3734 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3735 AVStream *st = ic->streams[i];
3736 int g = av_gcd(st->time_base.num, st->time_base.den);
3737 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3738 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3739 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3740 /* the pid is an important information, so we display it */
3741 /* XXX: add a generic system */
3742 if (flags & AVFMT_SHOW_IDS)
3743 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3745 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3746 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3747 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3748 if (st->sample_aspect_ratio.num && // default
3749 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3750 AVRational display_aspect_ratio;
3751 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3752 st->codec->width*st->sample_aspect_ratio.num,
3753 st->codec->height*st->sample_aspect_ratio.den,
3755 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3756 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3757 display_aspect_ratio.num, display_aspect_ratio.den);
3759 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3760 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3761 print_fps(av_q2d(st->avg_frame_rate), "fps");
3762 if(st->r_frame_rate.den && st->r_frame_rate.num)
3763 print_fps(av_q2d(st->r_frame_rate), "tbr");
3764 if(st->time_base.den && st->time_base.num)
3765 print_fps(1/av_q2d(st->time_base), "tbn");
3766 if(st->codec->time_base.den && st->codec->time_base.num)
3767 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3769 if (st->disposition & AV_DISPOSITION_DEFAULT)
3770 av_log(NULL, AV_LOG_INFO, " (default)");
3771 if (st->disposition & AV_DISPOSITION_DUB)
3772 av_log(NULL, AV_LOG_INFO, " (dub)");
3773 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3774 av_log(NULL, AV_LOG_INFO, " (original)");
3775 if (st->disposition & AV_DISPOSITION_COMMENT)
3776 av_log(NULL, AV_LOG_INFO, " (comment)");
3777 if (st->disposition & AV_DISPOSITION_LYRICS)
3778 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3779 if (st->disposition & AV_DISPOSITION_KARAOKE)
3780 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3781 if (st->disposition & AV_DISPOSITION_FORCED)
3782 av_log(NULL, AV_LOG_INFO, " (forced)");
3783 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3784 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3785 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3786 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3787 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3788 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3789 av_log(NULL, AV_LOG_INFO, "\n");
3790 dump_metadata(NULL, st->metadata, " ");
3793 void av_dump_format(AVFormatContext *ic,
3799 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3800 if (ic->nb_streams && !printed)
3803 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3804 is_output ? "Output" : "Input",
3806 is_output ? ic->oformat->name : ic->iformat->name,
3807 is_output ? "to" : "from", url);
3808 dump_metadata(NULL, ic->metadata, " ");
3810 av_log(NULL, AV_LOG_INFO, " Duration: ");
3811 if (ic->duration != AV_NOPTS_VALUE) {
3812 int hours, mins, secs, us;
3813 secs = ic->duration / AV_TIME_BASE;
3814 us = ic->duration % AV_TIME_BASE;
3819 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3820 (100 * us) / AV_TIME_BASE);
3822 av_log(NULL, AV_LOG_INFO, "N/A");
3824 if (ic->start_time != AV_NOPTS_VALUE) {
3826 av_log(NULL, AV_LOG_INFO, ", start: ");
3827 secs = ic->start_time / AV_TIME_BASE;
3828 us = abs(ic->start_time % AV_TIME_BASE);
3829 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3830 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3832 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3834 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3836 av_log(NULL, AV_LOG_INFO, "N/A");
3838 av_log(NULL, AV_LOG_INFO, "\n");
3840 for (i = 0; i < ic->nb_chapters; i++) {
3841 AVChapter *ch = ic->chapters[i];
3842 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3843 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3844 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3846 dump_metadata(NULL, ch->metadata, " ");
3848 if(ic->nb_programs) {
3849 int j, k, total = 0;
3850 for(j=0; j<ic->nb_programs; j++) {
3851 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3853 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3854 name ? name->value : "");
3855 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3856 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3857 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3858 printed[ic->programs[j]->stream_index[k]] = 1;
3860 total += ic->programs[j]->nb_stream_indexes;
3862 if (total < ic->nb_streams)
3863 av_log(NULL, AV_LOG_INFO, " No Program\n");
3865 for(i=0;i<ic->nb_streams;i++)
3867 dump_stream_format(ic, i, index, is_output);
3872 int64_t av_gettime(void)
3875 gettimeofday(&tv,NULL);
3876 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3879 uint64_t ff_ntp_time(void)
3881 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3884 int av_get_frame_filename(char *buf, int buf_size,
3885 const char *path, int number)
3888 char *q, buf1[20], c;
3889 int nd, len, percentd_found;
3901 while (isdigit(*p)) {
3902 nd = nd * 10 + *p++ - '0';
3905 } while (isdigit(c));
3914 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3916 if ((q - buf + len) > buf_size - 1)
3918 memcpy(q, buf1, len);
3926 if ((q - buf) < buf_size - 1)
3930 if (!percentd_found)
3939 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3943 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3945 for(i=0;i<size;i+=16) {
3952 PRINT(" %02x", buf[i+j]);
3957 for(j=0;j<len;j++) {
3959 if (c < ' ' || c > '~')
3968 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3970 hex_dump_internal(NULL, f, 0, buf, size);
3973 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3975 hex_dump_internal(avcl, NULL, level, buf, size);
3978 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3981 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3982 PRINT("stream #%d:\n", pkt->stream_index);
3983 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3984 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3985 /* DTS is _always_ valid after av_read_frame() */
3987 if (pkt->dts == AV_NOPTS_VALUE)
3990 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3991 /* PTS may not be known if B-frames are present. */
3993 if (pkt->pts == AV_NOPTS_VALUE)
3996 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3998 PRINT(" size=%d\n", pkt->size);
4001 av_hex_dump(f, pkt->data, pkt->size);
4005 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
4007 AVRational tb = { 1, AV_TIME_BASE };
4008 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
4012 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
4014 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
4018 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
4020 AVRational tb = { 1, AV_TIME_BASE };
4021 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
4025 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
4028 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
4031 void av_url_split(char *proto, int proto_size,
4032 char *authorization, int authorization_size,
4033 char *hostname, int hostname_size,
4035 char *path, int path_size,
4038 const char *p, *ls, *at, *col, *brk;
4040 if (port_ptr) *port_ptr = -1;
4041 if (proto_size > 0) proto[0] = 0;
4042 if (authorization_size > 0) authorization[0] = 0;
4043 if (hostname_size > 0) hostname[0] = 0;
4044 if (path_size > 0) path[0] = 0;
4046 /* parse protocol */
4047 if ((p = strchr(url, ':'))) {
4048 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4053 /* no protocol means plain filename */
4054 av_strlcpy(path, url, path_size);
4058 /* separate path from hostname */
4059 ls = strchr(p, '/');
4061 ls = strchr(p, '?');
4063 av_strlcpy(path, ls, path_size);
4065 ls = &p[strlen(p)]; // XXX
4067 /* the rest is hostname, use that to parse auth/port */
4069 /* authorization (user[:pass]@hostname) */
4070 if ((at = strchr(p, '@')) && at < ls) {
4071 av_strlcpy(authorization, p,
4072 FFMIN(authorization_size, at + 1 - p));
4073 p = at + 1; /* skip '@' */
4076 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4078 av_strlcpy(hostname, p + 1,
4079 FFMIN(hostname_size, brk - p));
4080 if (brk[1] == ':' && port_ptr)
4081 *port_ptr = atoi(brk + 2);
4082 } else if ((col = strchr(p, ':')) && col < ls) {
4083 av_strlcpy(hostname, p,
4084 FFMIN(col + 1 - p, hostname_size));
4085 if (port_ptr) *port_ptr = atoi(col + 1);
4087 av_strlcpy(hostname, p,
4088 FFMIN(ls + 1 - p, hostname_size));
4092 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4095 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4098 'C', 'D', 'E', 'F' };
4099 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4102 'c', 'd', 'e', 'f' };
4103 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4105 for(i = 0; i < s; i++) {
4106 buff[i * 2] = hex_table[src[i] >> 4];
4107 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4113 int ff_hex_to_data(uint8_t *data, const char *p)
4120 p += strspn(p, SPACE_CHARS);
4123 c = toupper((unsigned char) *p++);
4124 if (c >= '0' && c <= '9')
4126 else if (c >= 'A' && c <= 'F')
4141 #if FF_API_SET_PTS_INFO
4142 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4143 unsigned int pts_num, unsigned int pts_den)
4145 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4149 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4150 unsigned int pts_num, unsigned int pts_den)
4153 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4154 if(new_tb.num != pts_num)
4155 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4157 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4159 if(new_tb.num <= 0 || new_tb.den <= 0) {
4160 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase %d/%d for st:%d\n", new_tb.num, new_tb.den, s->index);
4163 s->time_base = new_tb;
4164 s->pts_wrap_bits = pts_wrap_bits;
4167 int ff_url_join(char *str, int size, const char *proto,
4168 const char *authorization, const char *hostname,
4169 int port, const char *fmt, ...)
4172 struct addrinfo hints = { 0 }, *ai;
4177 av_strlcatf(str, size, "%s://", proto);
4178 if (authorization && authorization[0])
4179 av_strlcatf(str, size, "%s@", authorization);
4180 #if CONFIG_NETWORK && defined(AF_INET6)
4181 /* Determine if hostname is a numerical IPv6 address,
4182 * properly escape it within [] in that case. */
4183 hints.ai_flags = AI_NUMERICHOST;
4184 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4185 if (ai->ai_family == AF_INET6) {
4186 av_strlcat(str, "[", size);
4187 av_strlcat(str, hostname, size);
4188 av_strlcat(str, "]", size);
4190 av_strlcat(str, hostname, size);
4195 /* Not an IPv6 address, just output the plain string. */
4196 av_strlcat(str, hostname, size);
4199 av_strlcatf(str, size, ":%d", port);
4202 int len = strlen(str);
4205 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4211 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4212 AVFormatContext *src)
4217 local_pkt.stream_index = dst_stream;
4218 if (pkt->pts != AV_NOPTS_VALUE)
4219 local_pkt.pts = av_rescale_q(pkt->pts,
4220 src->streams[pkt->stream_index]->time_base,
4221 dst->streams[dst_stream]->time_base);
4222 if (pkt->dts != AV_NOPTS_VALUE)
4223 local_pkt.dts = av_rescale_q(pkt->dts,
4224 src->streams[pkt->stream_index]->time_base,
4225 dst->streams[dst_stream]->time_base);
4226 return av_write_frame(dst, &local_pkt);
4229 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4232 const char *ptr = str;
4234 /* Parse key=value pairs. */
4237 char *dest = NULL, *dest_end;
4238 int key_len, dest_len = 0;
4240 /* Skip whitespace and potential commas. */
4241 while (*ptr && (isspace(*ptr) || *ptr == ','))
4248 if (!(ptr = strchr(key, '=')))
4251 key_len = ptr - key;
4253 callback_get_buf(context, key, key_len, &dest, &dest_len);
4254 dest_end = dest + dest_len - 1;
4258 while (*ptr && *ptr != '\"') {
4262 if (dest && dest < dest_end)
4266 if (dest && dest < dest_end)
4274 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4275 if (dest && dest < dest_end)
4283 int ff_find_stream_index(AVFormatContext *s, int id)
4286 for (i = 0; i < s->nb_streams; i++) {
4287 if (s->streams[i]->id == id)
4293 void ff_make_absolute_url(char *buf, int size, const char *base,
4297 /* Absolute path, relative to the current server */
4298 if (base && strstr(base, "://") && rel[0] == '/') {
4300 av_strlcpy(buf, base, size);
4301 sep = strstr(buf, "://");
4304 sep = strchr(sep, '/');
4308 av_strlcat(buf, rel, size);
4311 /* If rel actually is an absolute url, just copy it */
4312 if (!base || strstr(rel, "://") || rel[0] == '/') {
4313 av_strlcpy(buf, rel, size);
4317 av_strlcpy(buf, base, size);
4318 /* Remove the file name from the base url */
4319 sep = strrchr(buf, '/');
4324 while (av_strstart(rel, "../", NULL) && sep) {
4325 /* Remove the path delimiter at the end */
4327 sep = strrchr(buf, '/');
4328 /* If the next directory name to pop off is "..", break here */
4329 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4330 /* Readd the slash we just removed */
4331 av_strlcat(buf, "/", size);
4334 /* Cut off the directory name */
4341 av_strlcat(buf, rel, size);
4344 int64_t ff_iso8601_to_unix_time(const char *datestr)
4347 struct tm time1 = {0}, time2 = {0};
4349 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4350 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4352 return av_timegm(&time2);
4354 return av_timegm(&time1);
4356 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4357 "the date string.\n");
4362 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4365 if (ofmt->query_codec)
4366 return ofmt->query_codec(codec_id, std_compliance);
4367 else if (ofmt->codec_tag)
4368 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4369 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4370 codec_id == ofmt->subtitle_codec)
4373 return AVERROR_PATCHWELCOME;
4376 int avformat_network_init(void)
4380 ff_network_inited_globally = 1;
4381 if ((ret = ff_network_init()) < 0)
4388 int avformat_network_deinit(void)
4397 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4398 uint64_t channel_layout, int32_t sample_rate,
4399 int32_t width, int32_t height)
4405 return AVERROR(EINVAL);
4408 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4410 if (channel_layout) {
4412 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4416 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4418 if (width || height) {
4420 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4422 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4424 return AVERROR(ENOMEM);
4425 bytestream_put_le32(&data, flags);
4427 bytestream_put_le32(&data, channels);
4429 bytestream_put_le64(&data, channel_layout);
4431 bytestream_put_le32(&data, sample_rate);
4432 if (width || height) {
4433 bytestream_put_le32(&data, width);
4434 bytestream_put_le32(&data, height);
4439 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4441 return ff_codec_bmp_tags;
4443 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4445 return ff_codec_wav_tags;
4448 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4450 AVRational undef = {0, 1};
4451 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4452 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4453 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4455 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4456 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4457 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4458 stream_sample_aspect_ratio = undef;
4460 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4461 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4462 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4463 frame_sample_aspect_ratio = undef;
4465 if (stream_sample_aspect_ratio.num)
4466 return stream_sample_aspect_ratio;
4468 return frame_sample_aspect_ratio;