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 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
682 AVPacketList *pktl = s->raw_packet_buffer;
686 if(s->streams[pkt->stream_index]->request_probe <= 0){
687 s->raw_packet_buffer = pktl->next;
688 s->raw_packet_buffer_remaining_size += pkt->size;
695 ret= s->iformat->read_packet(s, pkt);
697 if (!pktl || ret == AVERROR(EAGAIN))
699 for (i = 0; i < s->nb_streams; i++)
700 if(s->streams[i]->request_probe > 0)
701 s->streams[i]->request_probe = -1;
705 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
706 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
707 av_log(s, AV_LOG_WARNING,
708 "Dropped corrupted packet (stream = %d)\n",
714 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
715 av_packet_merge_side_data(pkt);
717 if(pkt->stream_index >= (unsigned)s->nb_streams){
718 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
722 st= s->streams[pkt->stream_index];
724 switch(st->codec->codec_type){
725 case AVMEDIA_TYPE_VIDEO:
726 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
728 case AVMEDIA_TYPE_AUDIO:
729 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
731 case AVMEDIA_TYPE_SUBTITLE:
732 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
736 if(!pktl && st->request_probe <= 0)
739 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
740 s->raw_packet_buffer_remaining_size -= pkt->size;
742 if(st->request_probe>0){
743 AVProbeData *pd = &st->probe_data;
745 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
748 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
749 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
750 pd->buf_size += pkt->size;
751 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
753 end= s->raw_packet_buffer_remaining_size <= 0
754 || st->probe_packets<=0;
756 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
757 int score= set_codec_from_probe_data(s, st, pd);
758 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
762 st->request_probe= -1;
763 if(st->codec->codec_id != CODEC_ID_NONE){
764 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
766 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
773 #if FF_API_READ_PACKET
774 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
776 return ff_read_packet(s, pkt);
781 /**********************************************************/
783 static int determinable_frame_size(AVCodecContext *avctx)
785 if (/*avctx->codec_id == CODEC_ID_AAC ||*/
786 avctx->codec_id == CODEC_ID_MP1 ||
787 avctx->codec_id == CODEC_ID_MP2 ||
788 avctx->codec_id == CODEC_ID_MP3/* ||
789 avctx->codec_id == CODEC_ID_CELT*/)
795 * Get the number of samples of an audio frame. Return -1 on error.
797 static int get_audio_frame_size(AVCodecContext *enc, int size, int mux)
801 /* give frame_size priority if demuxing */
802 if (!mux && enc->frame_size > 1)
803 return enc->frame_size;
805 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
808 /* fallback to using frame_size if muxing */
809 if (enc->frame_size > 1)
810 return enc->frame_size;
817 * Return the frame duration in seconds. Return 0 if not available.
819 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
820 AVCodecParserContext *pc, AVPacket *pkt)
826 switch(st->codec->codec_type) {
827 case AVMEDIA_TYPE_VIDEO:
828 if (st->r_frame_rate.num && !pc) {
829 *pnum = st->r_frame_rate.den;
830 *pden = st->r_frame_rate.num;
831 } else if(st->time_base.num*1000LL > st->time_base.den) {
832 *pnum = st->time_base.num;
833 *pden = st->time_base.den;
834 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
835 *pnum = st->codec->time_base.num;
836 *pden = st->codec->time_base.den;
837 if (pc && pc->repeat_pict) {
838 *pnum = (*pnum) * (1 + pc->repeat_pict);
840 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
841 //Thus if we have no parser in such case leave duration undefined.
842 if(st->codec->ticks_per_frame>1 && !pc){
847 case AVMEDIA_TYPE_AUDIO:
848 frame_size = get_audio_frame_size(st->codec, pkt->size, 0);
849 if (frame_size <= 0 || st->codec->sample_rate <= 0)
852 *pden = st->codec->sample_rate;
859 static int is_intra_only(AVCodecContext *enc){
860 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
862 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
863 switch(enc->codec_id){
865 case CODEC_ID_MJPEGB:
867 case CODEC_ID_PRORES:
868 case CODEC_ID_RAWVIDEO:
870 case CODEC_ID_DVVIDEO:
871 case CODEC_ID_HUFFYUV:
872 case CODEC_ID_FFVHUFF:
877 case CODEC_ID_JPEG2000:
879 case CODEC_ID_UTVIDEO:
887 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
891 if (pktl == s->parse_queue_end)
892 return s->packet_buffer;
896 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
897 int64_t dts, int64_t pts)
899 AVStream *st= s->streams[stream_index];
900 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
902 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
905 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
908 if (is_relative(pts))
909 pts += st->first_dts - RELATIVE_TS_BASE;
911 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
912 if(pktl->pkt.stream_index != stream_index)
914 if(is_relative(pktl->pkt.pts))
915 pktl->pkt.pts += st->first_dts - RELATIVE_TS_BASE;
917 if(is_relative(pktl->pkt.dts))
918 pktl->pkt.dts += st->first_dts - RELATIVE_TS_BASE;
920 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
921 st->start_time= pktl->pkt.pts;
923 if (st->start_time == AV_NOPTS_VALUE)
924 st->start_time = pts;
927 static void update_initial_durations(AVFormatContext *s, AVStream *st,
928 int stream_index, int duration)
930 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
931 int64_t cur_dts= RELATIVE_TS_BASE;
933 if(st->first_dts != AV_NOPTS_VALUE){
934 cur_dts= st->first_dts;
935 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
936 if(pktl->pkt.stream_index == stream_index){
937 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
942 if(pktl && pktl->pkt.dts != st->first_dts) {
943 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));
947 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in ques\n", av_ts2str(st->first_dts));
950 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
951 st->first_dts = cur_dts;
952 }else if(st->cur_dts != RELATIVE_TS_BASE)
955 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
956 if(pktl->pkt.stream_index != stream_index)
958 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
959 && !pktl->pkt.duration){
960 pktl->pkt.dts= cur_dts;
961 if(!st->codec->has_b_frames)
962 pktl->pkt.pts= cur_dts;
963 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
964 pktl->pkt.duration = duration;
967 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
970 st->cur_dts= cur_dts;
973 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
974 AVCodecParserContext *pc, AVPacket *pkt)
976 int num, den, presentation_delayed, delay, i;
979 if (s->flags & AVFMT_FLAG_NOFILLIN)
982 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
983 pkt->dts= AV_NOPTS_VALUE;
985 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
986 //FIXME Set low_delay = 0 when has_b_frames = 1
987 st->codec->has_b_frames = 1;
989 /* do we have a video B-frame ? */
990 delay= st->codec->has_b_frames;
991 presentation_delayed = 0;
993 /* XXX: need has_b_frame, but cannot get it if the codec is
996 pc && pc->pict_type != AV_PICTURE_TYPE_B)
997 presentation_delayed = 1;
999 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){
1000 pkt->dts -= 1LL<<st->pts_wrap_bits;
1003 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1004 // we take the conservative approach and discard both
1005 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1006 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1007 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1008 pkt->dts= AV_NOPTS_VALUE;
1011 if (pkt->duration == 0) {
1012 compute_frame_duration(&num, &den, st, pc, pkt);
1014 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1017 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1018 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1020 /* correct timestamps with byte offset if demuxers only have timestamps
1021 on packet boundaries */
1022 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1023 /* this will estimate bitrate based on this frame's duration and size */
1024 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1025 if(pkt->pts != AV_NOPTS_VALUE)
1027 if(pkt->dts != AV_NOPTS_VALUE)
1031 if (pc && pc->dts_sync_point >= 0) {
1032 // we have synchronization info from the parser
1033 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1035 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1036 if (pkt->dts != AV_NOPTS_VALUE) {
1037 // got DTS from the stream, update reference timestamp
1038 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1039 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1040 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1041 // compute DTS based on reference timestamp
1042 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1043 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1045 if (pc->dts_sync_point > 0)
1046 st->reference_dts = pkt->dts; // new reference
1050 /* This may be redundant, but it should not hurt. */
1051 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1052 presentation_delayed = 1;
1054 // av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1055 // presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1056 /* interpolate PTS and DTS if they are not present */
1057 //We skip H264 currently because delay and has_b_frames are not reliably set
1058 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1059 if (presentation_delayed) {
1060 /* DTS = decompression timestamp */
1061 /* PTS = presentation timestamp */
1062 if (pkt->dts == AV_NOPTS_VALUE)
1063 pkt->dts = st->last_IP_pts;
1064 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1065 if (pkt->dts == AV_NOPTS_VALUE)
1066 pkt->dts = st->cur_dts;
1068 /* this is tricky: the dts must be incremented by the duration
1069 of the frame we are displaying, i.e. the last I- or P-frame */
1070 if (st->last_IP_duration == 0)
1071 st->last_IP_duration = pkt->duration;
1072 if(pkt->dts != AV_NOPTS_VALUE)
1073 st->cur_dts = pkt->dts + st->last_IP_duration;
1074 st->last_IP_duration = pkt->duration;
1075 st->last_IP_pts= pkt->pts;
1076 /* cannot compute PTS if not present (we can compute it only
1077 by knowing the future */
1078 } else if (pkt->pts != AV_NOPTS_VALUE ||
1079 pkt->dts != AV_NOPTS_VALUE ||
1081 int duration = pkt->duration;
1083 if(pkt->pts != AV_NOPTS_VALUE && duration){
1084 int64_t old_diff= FFABS(st->cur_dts - duration - pkt->pts);
1085 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1086 if( old_diff < new_diff && old_diff < (duration>>3)
1087 && (!strcmp(s->iformat->name, "mpeg") ||
1088 !strcmp(s->iformat->name, "mpegts"))){
1089 pkt->pts += duration;
1090 av_log(s, AV_LOG_WARNING, "Adjusting PTS forward\n");
1091 // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%s size:%d\n",
1092 // pkt->stream_index, old_diff, new_diff, pkt->duration, av_ts2str(st->cur_dts), pkt->size);
1096 /* presentation is not delayed : PTS and DTS are the same */
1097 if (pkt->pts == AV_NOPTS_VALUE)
1098 pkt->pts = pkt->dts;
1099 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1101 if (pkt->pts == AV_NOPTS_VALUE)
1102 pkt->pts = st->cur_dts;
1103 pkt->dts = pkt->pts;
1104 if (pkt->pts != AV_NOPTS_VALUE)
1105 st->cur_dts = pkt->pts + duration;
1109 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1110 st->pts_buffer[0]= pkt->pts;
1111 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1112 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1113 if(pkt->dts == AV_NOPTS_VALUE)
1114 pkt->dts= st->pts_buffer[0];
1115 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1116 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1118 if(pkt->dts > st->cur_dts)
1119 st->cur_dts = pkt->dts;
1122 // av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1123 // presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1126 if(is_intra_only(st->codec))
1127 pkt->flags |= AV_PKT_FLAG_KEY;
1129 pkt->convergence_duration = pc->convergence_duration;
1132 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1135 AVPacketList *pktl = *pkt_buf;
1136 *pkt_buf = pktl->next;
1137 av_free_packet(&pktl->pkt);
1140 *pkt_buf_end = NULL;
1144 * Parse a packet, add all split parts to parse_queue
1146 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1148 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1150 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1151 AVStream *st = s->streams[stream_index];
1152 uint8_t *data = pkt ? pkt->data : NULL;
1153 int size = pkt ? pkt->size : 0;
1154 int ret = 0, got_output = 0;
1157 av_init_packet(&flush_pkt);
1160 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1161 // preserve 0-size sync packets
1162 compute_pkt_fields(s, st, st->parser, pkt);
1165 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1168 av_init_packet(&out_pkt);
1169 len = av_parser_parse2(st->parser, st->codec,
1170 &out_pkt.data, &out_pkt.size, data, size,
1171 pkt->pts, pkt->dts, pkt->pos);
1173 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1174 /* increment read pointer */
1178 got_output = !!out_pkt.size;
1183 /* set the duration */
1184 out_pkt.duration = 0;
1185 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1186 if (st->codec->sample_rate > 0) {
1187 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1188 (AVRational){ 1, st->codec->sample_rate },
1192 } else if (st->codec->time_base.num != 0 &&
1193 st->codec->time_base.den != 0) {
1194 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1195 st->codec->time_base,
1200 out_pkt.stream_index = st->index;
1201 out_pkt.pts = st->parser->pts;
1202 out_pkt.dts = st->parser->dts;
1203 out_pkt.pos = st->parser->pos;
1205 if (st->parser->key_frame == 1 ||
1206 (st->parser->key_frame == -1 &&
1207 st->parser->pict_type == AV_PICTURE_TYPE_I))
1208 out_pkt.flags |= AV_PKT_FLAG_KEY;
1210 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1211 out_pkt.flags |= AV_PKT_FLAG_KEY;
1213 compute_pkt_fields(s, st, st->parser, &out_pkt);
1215 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1216 out_pkt.flags & AV_PKT_FLAG_KEY) {
1217 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? out_pkt.pos : st->parser->frame_offset;
1218 ff_reduce_index(s, st->index);
1219 av_add_index_entry(st, pos, out_pkt.dts,
1220 0, 0, AVINDEX_KEYFRAME);
1223 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1224 out_pkt.destruct = pkt->destruct;
1225 pkt->destruct = NULL;
1227 if ((ret = av_dup_packet(&out_pkt)) < 0)
1230 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1231 av_free_packet(&out_pkt);
1232 ret = AVERROR(ENOMEM);
1238 /* end of the stream => close and free the parser */
1239 if (pkt == &flush_pkt) {
1240 av_parser_close(st->parser);
1245 av_free_packet(pkt);
1249 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1250 AVPacketList **pkt_buffer_end,
1254 av_assert0(*pkt_buffer);
1257 *pkt_buffer = pktl->next;
1259 *pkt_buffer_end = NULL;
1264 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1266 int ret = 0, i, got_packet = 0;
1268 av_init_packet(pkt);
1270 while (!got_packet && !s->parse_queue) {
1274 /* read next packet */
1275 ret = ff_read_packet(s, &cur_pkt);
1277 if (ret == AVERROR(EAGAIN))
1279 /* flush the parsers */
1280 for(i = 0; i < s->nb_streams; i++) {
1282 if (st->parser && st->need_parsing)
1283 parse_packet(s, NULL, st->index);
1285 /* all remaining packets are now in parse_queue =>
1286 * really terminate parsing */
1290 st = s->streams[cur_pkt.stream_index];
1292 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1293 cur_pkt.dts != AV_NOPTS_VALUE &&
1294 cur_pkt.pts < cur_pkt.dts) {
1295 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1296 cur_pkt.stream_index,
1297 av_ts2str(cur_pkt.pts),
1298 av_ts2str(cur_pkt.dts),
1301 if (s->debug & FF_FDEBUG_TS)
1302 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1303 cur_pkt.stream_index,
1304 av_ts2str(cur_pkt.pts),
1305 av_ts2str(cur_pkt.dts),
1310 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1311 st->parser = av_parser_init(st->codec->codec_id);
1313 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1314 "%s, packets or times may be invalid.\n",
1315 avcodec_get_name(st->codec->codec_id));
1316 /* no parser available: just output the raw packets */
1317 st->need_parsing = AVSTREAM_PARSE_NONE;
1318 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1319 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1320 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1321 st->parser->flags |= PARSER_FLAG_ONCE;
1322 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1323 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1327 if (!st->need_parsing || !st->parser) {
1328 /* no parsing needed: we just output the packet as is */
1330 compute_pkt_fields(s, st, NULL, pkt);
1331 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1332 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1333 ff_reduce_index(s, st->index);
1334 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1337 } else if (st->discard < AVDISCARD_ALL) {
1338 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1342 av_free_packet(&cur_pkt);
1344 if (pkt->flags & AV_PKT_FLAG_KEY)
1345 st->skip_to_keyframe = 0;
1346 if (st->skip_to_keyframe) {
1347 av_free_packet(&cur_pkt);
1352 if (!got_packet && s->parse_queue)
1353 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1355 if(s->debug & FF_FDEBUG_TS)
1356 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1358 av_ts2str(pkt->pts),
1359 av_ts2str(pkt->dts),
1367 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1369 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1374 ret = s->packet_buffer ? read_from_packet_buffer(&s->packet_buffer,
1375 &s->packet_buffer_end,
1377 read_frame_internal(s, pkt);
1382 AVPacketList *pktl = s->packet_buffer;
1385 AVPacket *next_pkt = &pktl->pkt;
1387 if (next_pkt->dts != AV_NOPTS_VALUE) {
1388 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1389 // last dts seen for this stream. if any of packets following
1390 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1391 int64_t last_dts = next_pkt->dts;
1392 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1393 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1394 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1395 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1396 next_pkt->pts = pktl->pkt.dts;
1398 if (last_dts != AV_NOPTS_VALUE) {
1399 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1400 last_dts = pktl->pkt.dts;
1405 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1406 // Fixing the last reference frame had none pts issue (For MXF etc).
1407 // We only do this when
1409 // 2. we are not able to resolve a pts value for current packet.
1410 // 3. the packets for this stream at the end of the files had valid dts.
1411 next_pkt->pts = last_dts + next_pkt->duration;
1413 pktl = s->packet_buffer;
1416 /* read packet from packet buffer, if there is data */
1417 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1418 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1419 ret = read_from_packet_buffer(&s->packet_buffer,
1420 &s->packet_buffer_end, pkt);
1425 ret = read_frame_internal(s, pkt);
1427 if (pktl && ret != AVERROR(EAGAIN)) {
1434 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1435 &s->packet_buffer_end)) < 0)
1436 return AVERROR(ENOMEM);
1440 if (is_relative(pkt->dts))
1441 pkt->dts -= RELATIVE_TS_BASE;
1442 if (is_relative(pkt->pts))
1443 pkt->pts -= RELATIVE_TS_BASE;
1447 /* XXX: suppress the packet queue */
1448 static void flush_packet_queue(AVFormatContext *s)
1450 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1451 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1452 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1454 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1457 /*******************************************************/
1460 int av_find_default_stream_index(AVFormatContext *s)
1462 int first_audio_index = -1;
1466 if (s->nb_streams <= 0)
1468 for(i = 0; i < s->nb_streams; i++) {
1470 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1471 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1474 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1475 first_audio_index = i;
1477 return first_audio_index >= 0 ? first_audio_index : 0;
1481 * Flush the frame reader.
1483 void ff_read_frame_flush(AVFormatContext *s)
1488 flush_packet_queue(s);
1490 /* for each stream, reset read state */
1491 for(i = 0; i < s->nb_streams; i++) {
1495 av_parser_close(st->parser);
1498 st->last_IP_pts = AV_NOPTS_VALUE;
1499 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1500 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1501 st->reference_dts = AV_NOPTS_VALUE;
1503 st->probe_packets = MAX_PROBE_PACKETS;
1505 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1506 st->pts_buffer[j]= AV_NOPTS_VALUE;
1510 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1514 for(i = 0; i < s->nb_streams; i++) {
1515 AVStream *st = s->streams[i];
1517 st->cur_dts = av_rescale(timestamp,
1518 st->time_base.den * (int64_t)ref_st->time_base.num,
1519 st->time_base.num * (int64_t)ref_st->time_base.den);
1523 void ff_reduce_index(AVFormatContext *s, int stream_index)
1525 AVStream *st= s->streams[stream_index];
1526 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1528 if((unsigned)st->nb_index_entries >= max_entries){
1530 for(i=0; 2*i<st->nb_index_entries; i++)
1531 st->index_entries[i]= st->index_entries[2*i];
1532 st->nb_index_entries= i;
1536 int ff_add_index_entry(AVIndexEntry **index_entries,
1537 int *nb_index_entries,
1538 unsigned int *index_entries_allocated_size,
1539 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1541 AVIndexEntry *entries, *ie;
1544 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1547 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1548 timestamp -= RELATIVE_TS_BASE;
1550 entries = av_fast_realloc(*index_entries,
1551 index_entries_allocated_size,
1552 (*nb_index_entries + 1) *
1553 sizeof(AVIndexEntry));
1557 *index_entries= entries;
1559 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1562 index= (*nb_index_entries)++;
1563 ie= &entries[index];
1564 assert(index==0 || ie[-1].timestamp < timestamp);
1566 ie= &entries[index];
1567 if(ie->timestamp != timestamp){
1568 if(ie->timestamp <= timestamp)
1570 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1571 (*nb_index_entries)++;
1572 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1573 distance= ie->min_distance;
1577 ie->timestamp = timestamp;
1578 ie->min_distance= distance;
1585 int av_add_index_entry(AVStream *st,
1586 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1588 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1589 &st->index_entries_allocated_size, pos,
1590 timestamp, size, distance, flags);
1593 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1594 int64_t wanted_timestamp, int flags)
1602 //optimize appending index entries at the end
1603 if(b && entries[b-1].timestamp < wanted_timestamp)
1608 timestamp = entries[m].timestamp;
1609 if(timestamp >= wanted_timestamp)
1611 if(timestamp <= wanted_timestamp)
1614 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1616 if(!(flags & AVSEEK_FLAG_ANY)){
1617 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1618 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1627 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1630 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1631 wanted_timestamp, flags);
1634 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1636 AVInputFormat *avif= s->iformat;
1637 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1638 int64_t ts_min, ts_max, ts;
1643 if (stream_index < 0)
1646 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1649 ts_min= AV_NOPTS_VALUE;
1650 pos_limit= -1; //gcc falsely says it may be uninitialized
1652 st= s->streams[stream_index];
1653 if(st->index_entries){
1656 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()
1657 index= FFMAX(index, 0);
1658 e= &st->index_entries[index];
1660 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1662 ts_min= e->timestamp;
1663 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1664 pos_min, av_ts2str(ts_min));
1669 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1670 assert(index < st->nb_index_entries);
1672 e= &st->index_entries[index];
1673 assert(e->timestamp >= target_ts);
1675 ts_max= e->timestamp;
1676 pos_limit= pos_max - e->min_distance;
1677 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1678 pos_max, pos_limit, av_ts2str(ts_max));
1682 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1687 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1690 ff_read_frame_flush(s);
1691 ff_update_cur_dts(s, st, ts);
1696 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1697 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1698 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1699 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1702 int64_t start_pos, filesize;
1705 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1707 if(ts_min == AV_NOPTS_VALUE){
1708 pos_min = s->data_offset;
1709 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1710 if (ts_min == AV_NOPTS_VALUE)
1714 if(ts_min >= target_ts){
1719 if(ts_max == AV_NOPTS_VALUE){
1721 filesize = avio_size(s->pb);
1722 pos_max = filesize - 1;
1725 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1727 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1728 if (ts_max == AV_NOPTS_VALUE)
1732 int64_t tmp_pos= pos_max + 1;
1733 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1734 if(tmp_ts == AV_NOPTS_VALUE)
1738 if(tmp_pos >= filesize)
1744 if(ts_max <= target_ts){
1749 if(ts_min > ts_max){
1751 }else if(ts_min == ts_max){
1756 while (pos_min < pos_limit) {
1757 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1758 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1759 assert(pos_limit <= pos_max);
1762 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1763 // interpolate position (better than dichotomy)
1764 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1765 + pos_min - approximate_keyframe_distance;
1766 }else if(no_change==1){
1767 // bisection, if interpolation failed to change min or max pos last time
1768 pos = (pos_min + pos_limit)>>1;
1770 /* linear search if bisection failed, can only happen if there
1771 are very few or no keyframes between min/max */
1776 else if(pos > pos_limit)
1780 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1785 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1786 pos_min, pos, pos_max,
1787 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1788 pos_limit, start_pos, no_change);
1789 if(ts == AV_NOPTS_VALUE){
1790 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1793 assert(ts != AV_NOPTS_VALUE);
1794 if (target_ts <= ts) {
1795 pos_limit = start_pos - 1;
1799 if (target_ts >= ts) {
1805 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1806 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1809 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1811 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1812 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1813 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1819 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1820 int64_t pos_min, pos_max;
1822 pos_min = s->data_offset;
1823 pos_max = avio_size(s->pb) - 1;
1825 if (pos < pos_min) pos= pos_min;
1826 else if(pos > pos_max) pos= pos_max;
1828 avio_seek(s->pb, pos, SEEK_SET);
1833 static int seek_frame_generic(AVFormatContext *s,
1834 int stream_index, int64_t timestamp, int flags)
1841 st = s->streams[stream_index];
1843 index = av_index_search_timestamp(st, timestamp, flags);
1845 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1848 if(index < 0 || index==st->nb_index_entries-1){
1852 if(st->nb_index_entries){
1853 assert(st->index_entries);
1854 ie= &st->index_entries[st->nb_index_entries-1];
1855 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1857 ff_update_cur_dts(s, st, ie->timestamp);
1859 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1865 read_status = av_read_frame(s, &pkt);
1866 } while (read_status == AVERROR(EAGAIN));
1867 if (read_status < 0)
1869 av_free_packet(&pkt);
1870 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1871 if(pkt.flags & AV_PKT_FLAG_KEY)
1873 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1874 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);
1879 index = av_index_search_timestamp(st, timestamp, flags);
1884 ff_read_frame_flush(s);
1885 AV_NOWARN_DEPRECATED(
1886 if (s->iformat->read_seek){
1887 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1891 ie = &st->index_entries[index];
1892 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1894 ff_update_cur_dts(s, st, ie->timestamp);
1899 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1900 int64_t timestamp, int flags)
1905 if (flags & AVSEEK_FLAG_BYTE) {
1906 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1908 ff_read_frame_flush(s);
1909 return seek_frame_byte(s, stream_index, timestamp, flags);
1912 if(stream_index < 0){
1913 stream_index= av_find_default_stream_index(s);
1914 if(stream_index < 0)
1917 st= s->streams[stream_index];
1918 /* timestamp for default must be expressed in AV_TIME_BASE units */
1919 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1922 /* first, we try the format specific seek */
1923 AV_NOWARN_DEPRECATED(
1924 if (s->iformat->read_seek) {
1925 ff_read_frame_flush(s);
1926 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1934 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1935 ff_read_frame_flush(s);
1936 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1937 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1938 ff_read_frame_flush(s);
1939 return seek_frame_generic(s, stream_index, timestamp, flags);
1945 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1947 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
1950 queue_attached_pictures(s);
1955 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1957 if(min_ts > ts || max_ts < ts)
1960 if (s->iformat->read_seek2) {
1962 ff_read_frame_flush(s);
1963 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1966 queue_attached_pictures(s);
1970 if(s->iformat->read_timestamp){
1971 //try to seek via read_timestamp()
1974 //Fallback to old API if new is not implemented but old is
1975 //Note the old has somewat different sematics
1976 AV_NOWARN_DEPRECATED(
1977 if (s->iformat->read_seek || 1) {
1978 int dir = (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0);
1979 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
1980 if (ret<0 && ts != min_ts && max_ts != ts) {
1981 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
1983 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
1989 // try some generic seek like seek_frame_generic() but with new ts semantics
1992 /*******************************************************/
1995 * Return TRUE if the stream has accurate duration in any stream.
1997 * @return TRUE if the stream has accurate duration for at least one component.
1999 static int has_duration(AVFormatContext *ic)
2004 for(i = 0;i < ic->nb_streams; i++) {
2005 st = ic->streams[i];
2006 if (st->duration != AV_NOPTS_VALUE)
2009 if (ic->duration != AV_NOPTS_VALUE)
2015 * Estimate the stream timings from the one of each components.
2017 * Also computes the global bitrate if possible.
2019 static void update_stream_timings(AVFormatContext *ic)
2021 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2022 int64_t duration, duration1, filesize;
2026 start_time = INT64_MAX;
2027 start_time_text = INT64_MAX;
2028 end_time = INT64_MIN;
2029 duration = INT64_MIN;
2030 for(i = 0;i < ic->nb_streams; i++) {
2031 st = ic->streams[i];
2032 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2033 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2034 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2035 if (start_time1 < start_time_text)
2036 start_time_text = start_time1;
2038 start_time = FFMIN(start_time, start_time1);
2039 if (st->duration != AV_NOPTS_VALUE) {
2040 end_time1 = start_time1
2041 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2042 end_time = FFMAX(end_time, end_time1);
2045 if (st->duration != AV_NOPTS_VALUE) {
2046 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2047 duration = FFMAX(duration, duration1);
2050 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2051 start_time = start_time_text;
2052 if (start_time != INT64_MAX) {
2053 ic->start_time = start_time;
2054 if (end_time != INT64_MIN)
2055 duration = FFMAX(duration, end_time - start_time);
2057 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2058 ic->duration = duration;
2060 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2061 /* compute the bitrate */
2062 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2063 (double)ic->duration;
2067 static void fill_all_stream_timings(AVFormatContext *ic)
2072 update_stream_timings(ic);
2073 for(i = 0;i < ic->nb_streams; i++) {
2074 st = ic->streams[i];
2075 if (st->start_time == AV_NOPTS_VALUE) {
2076 if(ic->start_time != AV_NOPTS_VALUE)
2077 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2078 if(ic->duration != AV_NOPTS_VALUE)
2079 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2084 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2086 int64_t filesize, duration;
2090 /* if bit_rate is already set, we believe it */
2091 if (ic->bit_rate <= 0) {
2093 for(i=0;i<ic->nb_streams;i++) {
2094 st = ic->streams[i];
2095 if (st->codec->bit_rate > 0)
2096 bit_rate += st->codec->bit_rate;
2098 ic->bit_rate = bit_rate;
2101 /* if duration is already set, we believe it */
2102 if (ic->duration == AV_NOPTS_VALUE &&
2103 ic->bit_rate != 0) {
2104 filesize = ic->pb ? avio_size(ic->pb) : 0;
2106 for(i = 0; i < ic->nb_streams; i++) {
2107 st = ic->streams[i];
2108 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2109 if (st->duration == AV_NOPTS_VALUE)
2110 st->duration = duration;
2116 #define DURATION_MAX_READ_SIZE 250000
2117 #define DURATION_MAX_RETRY 3
2119 /* only usable for MPEG-PS streams */
2120 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2122 AVPacket pkt1, *pkt = &pkt1;
2124 int read_size, i, ret;
2126 int64_t filesize, offset, duration;
2129 /* flush packet queue */
2130 flush_packet_queue(ic);
2132 for (i=0; i<ic->nb_streams; i++) {
2133 st = ic->streams[i];
2134 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2135 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2138 av_parser_close(st->parser);
2143 /* estimate the end time (duration) */
2144 /* XXX: may need to support wrapping */
2145 filesize = ic->pb ? avio_size(ic->pb) : 0;
2146 end_time = AV_NOPTS_VALUE;
2148 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2152 avio_seek(ic->pb, offset, SEEK_SET);
2155 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2159 ret = ff_read_packet(ic, pkt);
2160 } while(ret == AVERROR(EAGAIN));
2163 read_size += pkt->size;
2164 st = ic->streams[pkt->stream_index];
2165 if (pkt->pts != AV_NOPTS_VALUE &&
2166 (st->start_time != AV_NOPTS_VALUE ||
2167 st->first_dts != AV_NOPTS_VALUE)) {
2168 duration = end_time = pkt->pts;
2169 if (st->start_time != AV_NOPTS_VALUE)
2170 duration -= st->start_time;
2172 duration -= st->first_dts;
2174 duration += 1LL<<st->pts_wrap_bits;
2176 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2177 st->duration = duration;
2180 av_free_packet(pkt);
2182 }while( end_time==AV_NOPTS_VALUE
2183 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2184 && ++retry <= DURATION_MAX_RETRY);
2186 fill_all_stream_timings(ic);
2188 avio_seek(ic->pb, old_offset, SEEK_SET);
2189 for (i=0; i<ic->nb_streams; i++) {
2191 st->cur_dts= st->first_dts;
2192 st->last_IP_pts = AV_NOPTS_VALUE;
2193 st->reference_dts = AV_NOPTS_VALUE;
2197 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2201 /* get the file size, if possible */
2202 if (ic->iformat->flags & AVFMT_NOFILE) {
2205 file_size = avio_size(ic->pb);
2206 file_size = FFMAX(0, file_size);
2209 if ((!strcmp(ic->iformat->name, "mpeg") ||
2210 !strcmp(ic->iformat->name, "mpegts")) &&
2211 file_size && ic->pb->seekable) {
2212 /* get accurate estimate from the PTSes */
2213 estimate_timings_from_pts(ic, old_offset);
2214 } else if (has_duration(ic)) {
2215 /* at least one component has timings - we use them for all
2217 fill_all_stream_timings(ic);
2219 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2220 /* less precise: use bitrate info */
2221 estimate_timings_from_bit_rate(ic);
2223 update_stream_timings(ic);
2227 AVStream av_unused *st;
2228 for(i = 0;i < ic->nb_streams; i++) {
2229 st = ic->streams[i];
2230 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2231 (double) st->start_time / AV_TIME_BASE,
2232 (double) st->duration / AV_TIME_BASE);
2234 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2235 (double) ic->start_time / AV_TIME_BASE,
2236 (double) ic->duration / AV_TIME_BASE,
2237 ic->bit_rate / 1000);
2241 static int has_codec_parameters(AVStream *st)
2243 AVCodecContext *avctx = st->codec;
2245 switch (avctx->codec_type) {
2246 case AVMEDIA_TYPE_AUDIO:
2247 val = avctx->sample_rate && avctx->channels;
2248 if (!avctx->frame_size && determinable_frame_size(avctx))
2250 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2253 case AVMEDIA_TYPE_VIDEO:
2255 if (st->info->found_decoder >= 0 && avctx->pix_fmt == PIX_FMT_NONE)
2258 case AVMEDIA_TYPE_DATA:
2259 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2264 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2267 static int has_decode_delay_been_guessed(AVStream *st)
2269 return st->codec->codec_id != CODEC_ID_H264 ||
2270 st->info->nb_decoded_frames >= 6;
2273 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2274 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2277 int got_picture = 1, ret = 0;
2279 AVPacket pkt = *avpkt;
2281 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2282 AVDictionary *thread_opt = NULL;
2284 codec = st->codec->codec ? st->codec->codec :
2285 avcodec_find_decoder(st->codec->codec_id);
2288 st->info->found_decoder = -1;
2292 /* force thread count to 1 since the h264 decoder will not extract SPS
2293 * and PPS to extradata during multi-threaded decoding */
2294 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2295 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2297 av_dict_free(&thread_opt);
2299 st->info->found_decoder = -1;
2302 st->info->found_decoder = 1;
2303 } else if (!st->info->found_decoder)
2304 st->info->found_decoder = 1;
2306 if (st->info->found_decoder < 0)
2309 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2311 (!has_codec_parameters(st) ||
2312 !has_decode_delay_been_guessed(st) ||
2313 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2315 avcodec_get_frame_defaults(&picture);
2316 switch(st->codec->codec_type) {
2317 case AVMEDIA_TYPE_VIDEO:
2318 ret = avcodec_decode_video2(st->codec, &picture,
2319 &got_picture, &pkt);
2321 case AVMEDIA_TYPE_AUDIO:
2322 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2329 st->info->nb_decoded_frames++;
2335 if(!pkt.data && !got_picture)
2340 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2342 while (tags->id != CODEC_ID_NONE) {
2350 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2353 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2354 if(tag == tags[i].tag)
2357 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2358 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2361 return CODEC_ID_NONE;
2364 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2367 for(i=0; tags && tags[i]; i++){
2368 int tag= ff_codec_get_tag(tags[i], id);
2374 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2377 for(i=0; tags && tags[i]; i++){
2378 enum CodecID id= ff_codec_get_id(tags[i], tag);
2379 if(id!=CODEC_ID_NONE) return id;
2381 return CODEC_ID_NONE;
2384 static void compute_chapters_end(AVFormatContext *s)
2387 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2389 for (i = 0; i < s->nb_chapters; i++)
2390 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2391 AVChapter *ch = s->chapters[i];
2392 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2395 for (j = 0; j < s->nb_chapters; j++) {
2396 AVChapter *ch1 = s->chapters[j];
2397 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2398 if (j != i && next_start > ch->start && next_start < end)
2401 ch->end = (end == INT64_MAX) ? ch->start : end;
2405 static int get_std_framerate(int i){
2406 if(i<60*12) return i*1001;
2407 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2411 * Is the time base unreliable.
2412 * This is a heuristic to balance between quick acceptance of the values in
2413 * the headers vs. some extra checks.
2414 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2415 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2416 * And there are "variable" fps files this needs to detect as well.
2418 static int tb_unreliable(AVCodecContext *c){
2419 if( c->time_base.den >= 101L*c->time_base.num
2420 || c->time_base.den < 5L*c->time_base.num
2421 /* || c->codec_tag == AV_RL32("DIVX")
2422 || c->codec_tag == AV_RL32("XVID")*/
2423 || c->codec_id == CODEC_ID_MPEG2VIDEO
2424 || c->codec_id == CODEC_ID_H264
2430 #if FF_API_FORMAT_PARAMETERS
2431 int av_find_stream_info(AVFormatContext *ic)
2433 return avformat_find_stream_info(ic, NULL);
2437 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2439 int i, count, ret, read_size, j;
2441 AVPacket pkt1, *pkt;
2442 int64_t old_offset = avio_tell(ic->pb);
2443 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2444 int flush_codecs = 1;
2447 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2449 for(i=0;i<ic->nb_streams;i++) {
2451 AVDictionary *thread_opt = NULL;
2452 st = ic->streams[i];
2454 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2455 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2456 /* if(!st->time_base.num)
2458 if(!st->codec->time_base.num)
2459 st->codec->time_base= st->time_base;
2461 //only for the split stuff
2462 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2463 st->parser = av_parser_init(st->codec->codec_id);
2465 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2466 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2467 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2468 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2472 codec = st->codec->codec ? st->codec->codec :
2473 avcodec_find_decoder(st->codec->codec_id);
2475 /* force thread count to 1 since the h264 decoder will not extract SPS
2476 * and PPS to extradata during multi-threaded decoding */
2477 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2479 /* Ensure that subtitle_header is properly set. */
2480 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2481 && codec && !st->codec->codec)
2482 avcodec_open2(st->codec, codec, options ? &options[i]
2485 //try to just open decoders, in case this is enough to get parameters
2486 if (!has_codec_parameters(st)) {
2487 if (codec && !st->codec->codec)
2488 avcodec_open2(st->codec, codec, options ? &options[i]
2492 av_dict_free(&thread_opt);
2495 for (i=0; i<ic->nb_streams; i++) {
2496 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2502 if (ff_check_interrupt(&ic->interrupt_callback)){
2504 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2508 /* check if one codec still needs to be handled */
2509 for(i=0;i<ic->nb_streams;i++) {
2510 int fps_analyze_framecount = 20;
2512 st = ic->streams[i];
2513 if (!has_codec_parameters(st))
2515 /* if the timebase is coarse (like the usual millisecond precision
2516 of mkv), we need to analyze more frames to reliably arrive at
2518 if (av_q2d(st->time_base) > 0.0005)
2519 fps_analyze_framecount *= 2;
2520 if (ic->fps_probe_size >= 0)
2521 fps_analyze_framecount = ic->fps_probe_size;
2522 /* variable fps and no guess at the real fps */
2523 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2524 && st->info->duration_count < fps_analyze_framecount
2525 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2527 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2529 if (st->first_dts == AV_NOPTS_VALUE &&
2530 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2531 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2534 if (i == ic->nb_streams) {
2535 /* NOTE: if the format has no header, then we need to read
2536 some packets to get most of the streams, so we cannot
2538 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2539 /* if we found the info for all the codecs, we can stop */
2541 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2546 /* we did not get all the codec info, but we read too much data */
2547 if (read_size >= ic->probesize) {
2549 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2550 for (i = 0; i < ic->nb_streams; i++)
2551 if (!ic->streams[i]->r_frame_rate.num &&
2552 ic->streams[i]->info->duration_count <= 1)
2553 av_log(ic, AV_LOG_WARNING,
2554 "Stream #%d: not enough frames to estimate rate; "
2555 "consider increasing probesize\n", i);
2559 /* NOTE: a new stream can be added there if no header in file
2560 (AVFMTCTX_NOHEADER) */
2561 ret = read_frame_internal(ic, &pkt1);
2562 if (ret == AVERROR(EAGAIN))
2570 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2571 if ((ret = av_dup_packet(pkt)) < 0)
2572 goto find_stream_info_err;
2574 read_size += pkt->size;
2576 st = ic->streams[pkt->stream_index];
2577 if (st->codec_info_nb_frames>1) {
2579 if (st->time_base.den > 0)
2580 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2581 if (st->avg_frame_rate.num > 0)
2582 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));
2584 if (t >= ic->max_analyze_duration) {
2585 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2588 st->info->codec_info_duration += pkt->duration;
2591 int64_t last = st->info->last_dts;
2593 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2594 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2595 int64_t duration= pkt->dts - last;
2597 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2598 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2599 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2600 int framerate= get_std_framerate(i);
2601 double sdts= dts*framerate/(1001*12);
2603 int ticks= lrintf(sdts+j*0.5);
2604 double error= sdts - ticks + j*0.5;
2605 st->info->duration_error[j][0][i] += error;
2606 st->info->duration_error[j][1][i] += error*error;
2609 st->info->duration_count++;
2610 // ignore the first 4 values, they might have some random jitter
2611 if (st->info->duration_count > 3)
2612 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2614 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2615 st->info->last_dts = pkt->dts;
2617 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2618 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2619 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2620 st->codec->extradata_size= i;
2621 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2622 if (!st->codec->extradata)
2623 return AVERROR(ENOMEM);
2624 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2625 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2629 /* if still no information, we try to open the codec and to
2630 decompress the frame. We try to avoid that in most cases as
2631 it takes longer and uses more memory. For MPEG-4, we need to
2632 decompress for QuickTime.
2634 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2635 least one frame of codec data, this makes sure the codec initializes
2636 the channel configuration and does not only trust the values from the container.
2638 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2640 st->codec_info_nb_frames++;
2645 AVPacket empty_pkt = { 0 };
2647 av_init_packet(&empty_pkt);
2649 ret = -1; /* we could not have all the codec parameters before EOF */
2650 for(i=0;i<ic->nb_streams;i++) {
2651 st = ic->streams[i];
2653 /* flush the decoders */
2654 if (st->info->found_decoder == 1) {
2656 err = try_decode_frame(st, &empty_pkt,
2657 (options && i < orig_nb_streams) ?
2658 &options[i] : NULL);
2659 } while (err > 0 && !has_codec_parameters(st));
2662 av_log(ic, AV_LOG_INFO,
2663 "decoding for stream %d failed\n", st->index);
2667 if (!has_codec_parameters(st)){
2669 avcodec_string(buf, sizeof(buf), st->codec, 0);
2670 av_log(ic, AV_LOG_WARNING,
2671 "Could not find codec parameters (%s)\n", buf);
2678 // close codecs which were opened in try_decode_frame()
2679 for(i=0;i<ic->nb_streams;i++) {
2680 st = ic->streams[i];
2681 avcodec_close(st->codec);
2683 for(i=0;i<ic->nb_streams;i++) {
2684 st = ic->streams[i];
2685 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2686 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2687 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2688 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2689 st->codec->codec_tag= tag;
2692 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2693 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2694 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2695 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2696 // the check for tb_unreliable() is not completely correct, since this is not about handling
2697 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2698 // ipmovie.c produces.
2699 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)
2700 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);
2701 if (st->info->duration_count && !st->r_frame_rate.num
2702 && tb_unreliable(st->codec) /*&&
2703 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2704 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2706 double best_error= 0.01;
2708 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2711 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2713 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2716 int n= st->info->duration_count;
2717 double a= st->info->duration_error[k][0][j] / n;
2718 double error= st->info->duration_error[k][1][j]/n - a*a;
2720 if(error < best_error && best_error> 0.000000001){
2722 num = get_std_framerate(j);
2725 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2728 // do not increase frame rate by more than 1 % in order to match a standard rate.
2729 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2730 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2733 if (!st->r_frame_rate.num){
2734 if( st->codec->time_base.den * (int64_t)st->time_base.num
2735 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2736 st->r_frame_rate.num = st->codec->time_base.den;
2737 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2739 st->r_frame_rate.num = st->time_base.den;
2740 st->r_frame_rate.den = st->time_base.num;
2743 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2744 if(!st->codec->bits_per_coded_sample)
2745 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2746 // set stream disposition based on audio service type
2747 switch (st->codec->audio_service_type) {
2748 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2749 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2750 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2751 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2752 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2753 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2754 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2755 st->disposition = AV_DISPOSITION_COMMENT; break;
2756 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2757 st->disposition = AV_DISPOSITION_KARAOKE; break;
2762 estimate_timings(ic, old_offset);
2764 compute_chapters_end(ic);
2766 find_stream_info_err:
2767 for (i=0; i < ic->nb_streams; i++) {
2768 if (ic->streams[i]->codec)
2769 ic->streams[i]->codec->thread_count = 0;
2770 av_freep(&ic->streams[i]->info);
2773 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2777 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2781 for (i = 0; i < ic->nb_programs; i++) {
2782 if (ic->programs[i] == last) {
2786 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2787 if (ic->programs[i]->stream_index[j] == s)
2788 return ic->programs[i];
2794 int av_find_best_stream(AVFormatContext *ic,
2795 enum AVMediaType type,
2796 int wanted_stream_nb,
2798 AVCodec **decoder_ret,
2801 int i, nb_streams = ic->nb_streams;
2802 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2803 unsigned *program = NULL;
2804 AVCodec *decoder = NULL, *best_decoder = NULL;
2806 if (related_stream >= 0 && wanted_stream_nb < 0) {
2807 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2809 program = p->stream_index;
2810 nb_streams = p->nb_stream_indexes;
2813 for (i = 0; i < nb_streams; i++) {
2814 int real_stream_index = program ? program[i] : i;
2815 AVStream *st = ic->streams[real_stream_index];
2816 AVCodecContext *avctx = st->codec;
2817 if (avctx->codec_type != type)
2819 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2821 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2824 decoder = avcodec_find_decoder(st->codec->codec_id);
2827 ret = AVERROR_DECODER_NOT_FOUND;
2831 if (best_count >= st->codec_info_nb_frames)
2833 best_count = st->codec_info_nb_frames;
2834 ret = real_stream_index;
2835 best_decoder = decoder;
2836 if (program && i == nb_streams - 1 && ret < 0) {
2838 nb_streams = ic->nb_streams;
2839 i = 0; /* no related stream found, try again with everything */
2843 *decoder_ret = best_decoder;
2847 /*******************************************************/
2849 int av_read_play(AVFormatContext *s)
2851 if (s->iformat->read_play)
2852 return s->iformat->read_play(s);
2854 return avio_pause(s->pb, 0);
2855 return AVERROR(ENOSYS);
2858 int av_read_pause(AVFormatContext *s)
2860 if (s->iformat->read_pause)
2861 return s->iformat->read_pause(s);
2863 return avio_pause(s->pb, 1);
2864 return AVERROR(ENOSYS);
2867 void avformat_free_context(AVFormatContext *s)
2873 if (s->iformat && s->iformat->priv_class && s->priv_data)
2874 av_opt_free(s->priv_data);
2876 for(i=0;i<s->nb_streams;i++) {
2877 /* free all data in a stream component */
2880 av_parser_close(st->parser);
2882 if (st->attached_pic.data)
2883 av_free_packet(&st->attached_pic);
2884 av_dict_free(&st->metadata);
2885 av_freep(&st->index_entries);
2886 av_freep(&st->codec->extradata);
2887 av_freep(&st->codec->subtitle_header);
2888 av_freep(&st->codec);
2889 av_freep(&st->priv_data);
2890 av_freep(&st->info);
2893 for(i=s->nb_programs-1; i>=0; i--) {
2894 av_dict_free(&s->programs[i]->metadata);
2895 av_freep(&s->programs[i]->stream_index);
2896 av_freep(&s->programs[i]);
2898 av_freep(&s->programs);
2899 av_freep(&s->priv_data);
2900 while(s->nb_chapters--) {
2901 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2902 av_freep(&s->chapters[s->nb_chapters]);
2904 av_freep(&s->chapters);
2905 av_dict_free(&s->metadata);
2906 av_freep(&s->streams);
2910 #if FF_API_CLOSE_INPUT_FILE
2911 void av_close_input_file(AVFormatContext *s)
2913 avformat_close_input(&s);
2917 void avformat_close_input(AVFormatContext **ps)
2919 AVFormatContext *s = *ps;
2920 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2922 flush_packet_queue(s);
2923 if (s->iformat && (s->iformat->read_close))
2924 s->iformat->read_close(s);
2925 avformat_free_context(s);
2931 #if FF_API_NEW_STREAM
2932 AVStream *av_new_stream(AVFormatContext *s, int id)
2934 AVStream *st = avformat_new_stream(s, NULL);
2941 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2947 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2949 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2952 s->streams = streams;
2954 st = av_mallocz(sizeof(AVStream));
2957 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2961 st->info->last_dts = AV_NOPTS_VALUE;
2963 st->codec = avcodec_alloc_context3(c);
2965 /* no default bitrate if decoding */
2966 st->codec->bit_rate = 0;
2968 st->index = s->nb_streams;
2969 st->start_time = AV_NOPTS_VALUE;
2970 st->duration = AV_NOPTS_VALUE;
2971 /* we set the current DTS to 0 so that formats without any timestamps
2972 but durations get some timestamps, formats with some unknown
2973 timestamps have their first few packets buffered and the
2974 timestamps corrected before they are returned to the user */
2975 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
2976 st->first_dts = AV_NOPTS_VALUE;
2977 st->probe_packets = MAX_PROBE_PACKETS;
2979 /* default pts setting is MPEG-like */
2980 avpriv_set_pts_info(st, 33, 1, 90000);
2981 st->last_IP_pts = AV_NOPTS_VALUE;
2982 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2983 st->pts_buffer[i]= AV_NOPTS_VALUE;
2984 st->reference_dts = AV_NOPTS_VALUE;
2986 st->sample_aspect_ratio = (AVRational){0,1};
2988 s->streams[s->nb_streams++] = st;
2992 AVProgram *av_new_program(AVFormatContext *ac, int id)
2994 AVProgram *program=NULL;
2997 av_dlog(ac, "new_program: id=0x%04x\n", id);
2999 for(i=0; i<ac->nb_programs; i++)
3000 if(ac->programs[i]->id == id)
3001 program = ac->programs[i];
3004 program = av_mallocz(sizeof(AVProgram));
3007 dynarray_add(&ac->programs, &ac->nb_programs, program);
3008 program->discard = AVDISCARD_NONE;
3015 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3017 AVChapter *chapter = NULL;
3020 for(i=0; i<s->nb_chapters; i++)
3021 if(s->chapters[i]->id == id)
3022 chapter = s->chapters[i];
3025 chapter= av_mallocz(sizeof(AVChapter));
3028 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3030 av_dict_set(&chapter->metadata, "title", title, 0);
3032 chapter->time_base= time_base;
3033 chapter->start = start;
3039 /************************************************************/
3040 /* output media file */
3042 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3043 const char *format, const char *filename)
3045 AVFormatContext *s = avformat_alloc_context();
3054 oformat = av_guess_format(format, NULL, NULL);
3056 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3057 ret = AVERROR(EINVAL);
3061 oformat = av_guess_format(NULL, filename, NULL);
3063 ret = AVERROR(EINVAL);
3064 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3071 s->oformat = oformat;
3072 if (s->oformat->priv_data_size > 0) {
3073 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3076 if (s->oformat->priv_class) {
3077 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3078 av_opt_set_defaults(s->priv_data);
3081 s->priv_data = NULL;
3084 av_strlcpy(s->filename, filename, sizeof(s->filename));
3088 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3089 ret = AVERROR(ENOMEM);
3091 avformat_free_context(s);
3095 #if FF_API_ALLOC_OUTPUT_CONTEXT
3096 AVFormatContext *avformat_alloc_output_context(const char *format,
3097 AVOutputFormat *oformat, const char *filename)
3099 AVFormatContext *avctx;
3100 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3101 return ret < 0 ? NULL : avctx;
3105 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3107 const AVCodecTag *avctag;
3109 enum CodecID id = CODEC_ID_NONE;
3110 unsigned int tag = 0;
3113 * Check that tag + id is in the table
3114 * If neither is in the table -> OK
3115 * If tag is in the table with another id -> FAIL
3116 * If id is in the table with another tag -> FAIL unless strict < normal
3118 for (n = 0; s->oformat->codec_tag[n]; n++) {
3119 avctag = s->oformat->codec_tag[n];
3120 while (avctag->id != CODEC_ID_NONE) {
3121 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3123 if (id == st->codec->codec_id)
3126 if (avctag->id == st->codec->codec_id)
3131 if (id != CODEC_ID_NONE)
3133 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3138 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3142 AVDictionary *tmp = NULL;
3145 av_dict_copy(&tmp, *options, 0);
3146 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3148 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3149 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3152 // some sanity checks
3153 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3154 av_log(s, AV_LOG_ERROR, "no streams\n");
3155 ret = AVERROR(EINVAL);
3159 for(i=0;i<s->nb_streams;i++) {
3162 switch (st->codec->codec_type) {
3163 case AVMEDIA_TYPE_AUDIO:
3164 if(st->codec->sample_rate<=0){
3165 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3166 ret = AVERROR(EINVAL);
3169 if(!st->codec->block_align)
3170 st->codec->block_align = st->codec->channels *
3171 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3173 case AVMEDIA_TYPE_VIDEO:
3174 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3175 av_log(s, AV_LOG_ERROR, "time base not set\n");
3176 ret = AVERROR(EINVAL);
3179 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3180 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3181 ret = AVERROR(EINVAL);
3184 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3185 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3187 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
3188 "(%d/%d) and encoder layer (%d/%d)\n",
3189 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3190 st->codec->sample_aspect_ratio.num,
3191 st->codec->sample_aspect_ratio.den);
3192 ret = AVERROR(EINVAL);
3198 if(s->oformat->codec_tag){
3199 if( st->codec->codec_tag
3200 && st->codec->codec_id == CODEC_ID_RAWVIDEO
3201 && (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', ' '))
3202 && !validate_codec_tag(s, st)){
3203 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi/mov, we override it here
3204 st->codec->codec_tag= 0;
3206 if(st->codec->codec_tag){
3207 if (!validate_codec_tag(s, st)) {
3208 char tagbuf[32], cortag[32];
3209 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3210 av_get_codec_tag_string(cortag, sizeof(cortag), av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id));
3211 av_log(s, AV_LOG_ERROR,
3212 "Tag %s/0x%08x incompatible with output codec id '%d' (%s)\n",
3213 tagbuf, st->codec->codec_tag, st->codec->codec_id, cortag);
3214 ret = AVERROR_INVALIDDATA;
3218 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3221 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3222 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3223 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3226 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3227 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3228 if (!s->priv_data) {
3229 ret = AVERROR(ENOMEM);
3232 if (s->oformat->priv_class) {
3233 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3234 av_opt_set_defaults(s->priv_data);
3235 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3240 /* set muxer identification string */
3241 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3242 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3245 if(s->oformat->write_header){
3246 ret = s->oformat->write_header(s);
3251 /* init PTS generation */
3252 for(i=0;i<s->nb_streams;i++) {
3253 int64_t den = AV_NOPTS_VALUE;
3256 switch (st->codec->codec_type) {
3257 case AVMEDIA_TYPE_AUDIO:
3258 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3260 case AVMEDIA_TYPE_VIDEO:
3261 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3266 if (den != AV_NOPTS_VALUE) {
3268 ret = AVERROR_INVALIDDATA;
3271 frac_init(&st->pts, 0, 0, den);
3276 av_dict_free(options);
3285 //FIXME merge with compute_pkt_fields
3286 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3287 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3288 int num, den, frame_size, i;
3290 av_dlog(s, "compute_pkt_fields2: pts:%s dts:%s cur_dts:%s b:%d size:%d st:%d\n",
3291 av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), delay, pkt->size, pkt->stream_index);
3293 /* duration field */
3294 if (pkt->duration == 0) {
3295 compute_frame_duration(&num, &den, st, NULL, pkt);
3297 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3301 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3304 //XXX/FIXME this is a temporary hack until all encoders output pts
3305 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3308 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
3312 // pkt->pts= st->cur_dts;
3313 pkt->pts= st->pts.val;
3316 //calculate dts from pts
3317 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3318 st->pts_buffer[0]= pkt->pts;
3319 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3320 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3321 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3322 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3324 pkt->dts= st->pts_buffer[0];
3327 if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
3328 ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
3329 st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
3330 av_log(s, AV_LOG_ERROR,
3331 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %s >= %s\n",
3332 st->index, av_ts2str(st->cur_dts), av_ts2str(pkt->dts));
3333 return AVERROR(EINVAL);
3335 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3336 av_log(s, AV_LOG_ERROR, "pts (%s) < dts (%s) in stream %d\n",
3337 av_ts2str(pkt->pts), av_ts2str(pkt->dts), st->index);
3338 return AVERROR(EINVAL);
3341 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%s dts2:%s\n", av_ts2str(pkt->pts), av_ts2str(pkt->dts));
3342 st->cur_dts= pkt->dts;
3343 st->pts.val= pkt->dts;
3346 switch (st->codec->codec_type) {
3347 case AVMEDIA_TYPE_AUDIO:
3348 frame_size = get_audio_frame_size(st->codec, pkt->size, 1);
3350 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3351 likely equal to the encoder delay, but it would be better if we
3352 had the real timestamps from the encoder */
3353 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3354 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3357 case AVMEDIA_TYPE_VIDEO:
3358 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3366 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3371 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3372 return s->oformat->write_packet(s, pkt);
3376 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3378 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3381 ret= s->oformat->write_packet(s, pkt);
3384 s->streams[pkt->stream_index]->nb_frames++;
3388 #define CHUNK_START 0x1000
3390 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3391 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3393 AVPacketList **next_point, *this_pktl;
3394 AVStream *st= s->streams[pkt->stream_index];
3395 int chunked= s->max_chunk_size || s->max_chunk_duration;
3397 this_pktl = av_mallocz(sizeof(AVPacketList));
3399 return AVERROR(ENOMEM);
3400 this_pktl->pkt= *pkt;
3401 pkt->destruct= NULL; // do not free original but only the copy
3402 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3404 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3405 next_point = &(st->last_in_packet_buffer->next);
3407 next_point = &s->packet_buffer;
3412 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3413 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3414 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3415 st->interleaver_chunk_size += pkt->size;
3416 st->interleaver_chunk_duration += pkt->duration;
3419 st->interleaver_chunk_size =
3420 st->interleaver_chunk_duration = 0;
3421 this_pktl->pkt.flags |= CHUNK_START;
3425 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3427 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3428 || !compare(s, &(*next_point)->pkt, pkt))){
3429 next_point= &(*next_point)->next;
3434 next_point = &(s->packet_buffer_end->next);
3437 assert(!*next_point);
3439 s->packet_buffer_end= this_pktl;
3442 this_pktl->next= *next_point;
3444 s->streams[pkt->stream_index]->last_in_packet_buffer=
3445 *next_point= this_pktl;
3449 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3451 AVStream *st = s->streams[ pkt ->stream_index];
3452 AVStream *st2= s->streams[ next->stream_index];
3453 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3455 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3456 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);
3457 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);
3459 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
3460 -( 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;
3463 comp= (ts>ts2) - (ts<ts2);
3467 return pkt->stream_index < next->stream_index;
3471 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3472 AVPacket *pkt, int flush)
3475 int stream_count=0, noninterleaved_count=0;
3476 int64_t delta_dts_max = 0;
3480 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3485 for(i=0; i < s->nb_streams; i++) {
3486 if (s->streams[i]->last_in_packet_buffer) {
3488 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3489 ++noninterleaved_count;
3493 if (s->nb_streams == stream_count) {
3496 for(i=0; i < s->nb_streams; i++) {
3497 if (s->streams[i]->last_in_packet_buffer) {
3499 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3500 s->streams[i]->time_base,
3502 av_rescale_q(s->packet_buffer->pkt.dts,
3503 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3505 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3508 if(s->nb_streams == stream_count+noninterleaved_count &&
3509 delta_dts_max > 20*AV_TIME_BASE) {
3510 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3514 if(stream_count && flush){
3515 pktl= s->packet_buffer;
3518 s->packet_buffer= pktl->next;
3519 if(!s->packet_buffer)
3520 s->packet_buffer_end= NULL;
3522 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3523 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3527 av_init_packet(out);
3532 #if FF_API_INTERLEAVE_PACKET
3533 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3534 AVPacket *pkt, int flush)
3536 return ff_interleave_packet_per_dts(s, out, pkt, flush);
3541 * Interleave an AVPacket correctly so it can be muxed.
3542 * @param out the interleaved packet will be output here
3543 * @param in the input packet
3544 * @param flush 1 if no further packets are available as input and all
3545 * remaining packets should be output
3546 * @return 1 if a packet was output, 0 if no packet could be output,
3547 * < 0 if an error occurred
3549 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3550 if (s->oformat->interleave_packet) {
3551 int ret = s->oformat->interleave_packet(s, out, in, flush);
3556 return ff_interleave_packet_per_dts(s, out, in, flush);
3559 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3563 AVStream *st= s->streams[ pkt->stream_index];
3565 //FIXME/XXX/HACK drop zero sized packets
3566 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3569 av_dlog(s, "av_interleaved_write_frame size:%d dts:%s pts:%s\n",
3570 pkt->size, av_ts2str(pkt->dts), av_ts2str(pkt->pts));
3571 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3574 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3575 return AVERROR(EINVAL);
3577 av_dlog(s, "av_interleaved_write_frame FLUSH\n");
3583 int ret= interleave_packet(s, &opkt, pkt, flush);
3584 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3587 ret= s->oformat->write_packet(s, &opkt);
3589 s->streams[opkt.stream_index]->nb_frames++;
3591 av_free_packet(&opkt);
3596 if(s->pb && s->pb->error)
3597 return s->pb->error;
3601 int av_write_trailer(AVFormatContext *s)
3607 ret= interleave_packet(s, &pkt, NULL, 1);
3608 if(ret<0) //FIXME cleanup needed for ret<0 ?
3613 ret= s->oformat->write_packet(s, &pkt);
3615 s->streams[pkt.stream_index]->nb_frames++;
3617 av_free_packet(&pkt);
3621 if(s->pb && s->pb->error)
3625 if(s->oformat->write_trailer)
3626 ret = s->oformat->write_trailer(s);
3631 ret = s->pb ? s->pb->error : 0;
3632 for(i=0;i<s->nb_streams;i++) {
3633 av_freep(&s->streams[i]->priv_data);
3634 av_freep(&s->streams[i]->index_entries);
3636 if (s->oformat->priv_class)
3637 av_opt_free(s->priv_data);
3638 av_freep(&s->priv_data);
3642 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3643 int64_t *dts, int64_t *wall)
3645 if (!s->oformat || !s->oformat->get_output_timestamp)
3646 return AVERROR(ENOSYS);
3647 s->oformat->get_output_timestamp(s, stream, dts, wall);
3651 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3654 AVProgram *program=NULL;
3657 if (idx >= ac->nb_streams) {
3658 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3662 for(i=0; i<ac->nb_programs; i++){
3663 if(ac->programs[i]->id != progid)
3665 program = ac->programs[i];
3666 for(j=0; j<program->nb_stream_indexes; j++)
3667 if(program->stream_index[j] == idx)
3670 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3673 program->stream_index = tmp;
3674 program->stream_index[program->nb_stream_indexes++] = idx;
3679 static void print_fps(double d, const char *postfix){
3680 uint64_t v= lrintf(d*100);
3681 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3682 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3683 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3686 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3688 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3689 AVDictionaryEntry *tag=NULL;
3691 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3692 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3693 if(strcmp("language", tag->key)){
3694 const char *p = tag->value;
3695 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3698 size_t len = strcspn(p, "\xd\xa");
3699 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3700 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3702 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3703 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3706 av_log(ctx, AV_LOG_INFO, "\n");
3712 /* "user interface" functions */
3713 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3716 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3717 AVStream *st = ic->streams[i];
3718 int g = av_gcd(st->time_base.num, st->time_base.den);
3719 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3720 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3721 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3722 /* the pid is an important information, so we display it */
3723 /* XXX: add a generic system */
3724 if (flags & AVFMT_SHOW_IDS)
3725 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3727 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3728 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3729 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3730 if (st->sample_aspect_ratio.num && // default
3731 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3732 AVRational display_aspect_ratio;
3733 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3734 st->codec->width*st->sample_aspect_ratio.num,
3735 st->codec->height*st->sample_aspect_ratio.den,
3737 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3738 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3739 display_aspect_ratio.num, display_aspect_ratio.den);
3741 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3742 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3743 print_fps(av_q2d(st->avg_frame_rate), "fps");
3744 if(st->r_frame_rate.den && st->r_frame_rate.num)
3745 print_fps(av_q2d(st->r_frame_rate), "tbr");
3746 if(st->time_base.den && st->time_base.num)
3747 print_fps(1/av_q2d(st->time_base), "tbn");
3748 if(st->codec->time_base.den && st->codec->time_base.num)
3749 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3751 if (st->disposition & AV_DISPOSITION_DEFAULT)
3752 av_log(NULL, AV_LOG_INFO, " (default)");
3753 if (st->disposition & AV_DISPOSITION_DUB)
3754 av_log(NULL, AV_LOG_INFO, " (dub)");
3755 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3756 av_log(NULL, AV_LOG_INFO, " (original)");
3757 if (st->disposition & AV_DISPOSITION_COMMENT)
3758 av_log(NULL, AV_LOG_INFO, " (comment)");
3759 if (st->disposition & AV_DISPOSITION_LYRICS)
3760 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3761 if (st->disposition & AV_DISPOSITION_KARAOKE)
3762 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3763 if (st->disposition & AV_DISPOSITION_FORCED)
3764 av_log(NULL, AV_LOG_INFO, " (forced)");
3765 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3766 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3767 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3768 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3769 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3770 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3771 av_log(NULL, AV_LOG_INFO, "\n");
3772 dump_metadata(NULL, st->metadata, " ");
3775 void av_dump_format(AVFormatContext *ic,
3781 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3782 if (ic->nb_streams && !printed)
3785 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3786 is_output ? "Output" : "Input",
3788 is_output ? ic->oformat->name : ic->iformat->name,
3789 is_output ? "to" : "from", url);
3790 dump_metadata(NULL, ic->metadata, " ");
3792 av_log(NULL, AV_LOG_INFO, " Duration: ");
3793 if (ic->duration != AV_NOPTS_VALUE) {
3794 int hours, mins, secs, us;
3795 secs = ic->duration / AV_TIME_BASE;
3796 us = ic->duration % AV_TIME_BASE;
3801 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3802 (100 * us) / AV_TIME_BASE);
3804 av_log(NULL, AV_LOG_INFO, "N/A");
3806 if (ic->start_time != AV_NOPTS_VALUE) {
3808 av_log(NULL, AV_LOG_INFO, ", start: ");
3809 secs = ic->start_time / AV_TIME_BASE;
3810 us = abs(ic->start_time % AV_TIME_BASE);
3811 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3812 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3814 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3816 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3818 av_log(NULL, AV_LOG_INFO, "N/A");
3820 av_log(NULL, AV_LOG_INFO, "\n");
3822 for (i = 0; i < ic->nb_chapters; i++) {
3823 AVChapter *ch = ic->chapters[i];
3824 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3825 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3826 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3828 dump_metadata(NULL, ch->metadata, " ");
3830 if(ic->nb_programs) {
3831 int j, k, total = 0;
3832 for(j=0; j<ic->nb_programs; j++) {
3833 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3835 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3836 name ? name->value : "");
3837 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3838 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3839 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3840 printed[ic->programs[j]->stream_index[k]] = 1;
3842 total += ic->programs[j]->nb_stream_indexes;
3844 if (total < ic->nb_streams)
3845 av_log(NULL, AV_LOG_INFO, " No Program\n");
3847 for(i=0;i<ic->nb_streams;i++)
3849 dump_stream_format(ic, i, index, is_output);
3854 int64_t av_gettime(void)
3857 gettimeofday(&tv,NULL);
3858 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3861 uint64_t ff_ntp_time(void)
3863 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3866 int av_get_frame_filename(char *buf, int buf_size,
3867 const char *path, int number)
3870 char *q, buf1[20], c;
3871 int nd, len, percentd_found;
3883 while (isdigit(*p)) {
3884 nd = nd * 10 + *p++ - '0';
3887 } while (isdigit(c));
3896 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3898 if ((q - buf + len) > buf_size - 1)
3900 memcpy(q, buf1, len);
3908 if ((q - buf) < buf_size - 1)
3912 if (!percentd_found)
3921 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3925 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3927 for(i=0;i<size;i+=16) {
3934 PRINT(" %02x", buf[i+j]);
3939 for(j=0;j<len;j++) {
3941 if (c < ' ' || c > '~')
3950 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3952 hex_dump_internal(NULL, f, 0, buf, size);
3955 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3957 hex_dump_internal(avcl, NULL, level, buf, size);
3960 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3963 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3964 PRINT("stream #%d:\n", pkt->stream_index);
3965 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3966 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3967 /* DTS is _always_ valid after av_read_frame() */
3969 if (pkt->dts == AV_NOPTS_VALUE)
3972 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3973 /* PTS may not be known if B-frames are present. */
3975 if (pkt->pts == AV_NOPTS_VALUE)
3978 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3980 PRINT(" size=%d\n", pkt->size);
3983 av_hex_dump(f, pkt->data, pkt->size);
3987 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3989 AVRational tb = { 1, AV_TIME_BASE };
3990 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3994 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3996 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
4000 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
4002 AVRational tb = { 1, AV_TIME_BASE };
4003 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
4007 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
4010 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
4013 void av_url_split(char *proto, int proto_size,
4014 char *authorization, int authorization_size,
4015 char *hostname, int hostname_size,
4017 char *path, int path_size,
4020 const char *p, *ls, *at, *col, *brk;
4022 if (port_ptr) *port_ptr = -1;
4023 if (proto_size > 0) proto[0] = 0;
4024 if (authorization_size > 0) authorization[0] = 0;
4025 if (hostname_size > 0) hostname[0] = 0;
4026 if (path_size > 0) path[0] = 0;
4028 /* parse protocol */
4029 if ((p = strchr(url, ':'))) {
4030 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4035 /* no protocol means plain filename */
4036 av_strlcpy(path, url, path_size);
4040 /* separate path from hostname */
4041 ls = strchr(p, '/');
4043 ls = strchr(p, '?');
4045 av_strlcpy(path, ls, path_size);
4047 ls = &p[strlen(p)]; // XXX
4049 /* the rest is hostname, use that to parse auth/port */
4051 /* authorization (user[:pass]@hostname) */
4052 if ((at = strchr(p, '@')) && at < ls) {
4053 av_strlcpy(authorization, p,
4054 FFMIN(authorization_size, at + 1 - p));
4055 p = at + 1; /* skip '@' */
4058 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4060 av_strlcpy(hostname, p + 1,
4061 FFMIN(hostname_size, brk - p));
4062 if (brk[1] == ':' && port_ptr)
4063 *port_ptr = atoi(brk + 2);
4064 } else if ((col = strchr(p, ':')) && col < ls) {
4065 av_strlcpy(hostname, p,
4066 FFMIN(col + 1 - p, hostname_size));
4067 if (port_ptr) *port_ptr = atoi(col + 1);
4069 av_strlcpy(hostname, p,
4070 FFMIN(ls + 1 - p, hostname_size));
4074 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4077 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4080 'C', 'D', 'E', 'F' };
4081 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4084 'c', 'd', 'e', 'f' };
4085 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4087 for(i = 0; i < s; i++) {
4088 buff[i * 2] = hex_table[src[i] >> 4];
4089 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4095 int ff_hex_to_data(uint8_t *data, const char *p)
4102 p += strspn(p, SPACE_CHARS);
4105 c = toupper((unsigned char) *p++);
4106 if (c >= '0' && c <= '9')
4108 else if (c >= 'A' && c <= 'F')
4123 #if FF_API_SET_PTS_INFO
4124 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4125 unsigned int pts_num, unsigned int pts_den)
4127 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4131 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4132 unsigned int pts_num, unsigned int pts_den)
4135 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4136 if(new_tb.num != pts_num)
4137 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4139 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4141 if(new_tb.num <= 0 || new_tb.den <= 0) {
4142 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);
4145 s->time_base = new_tb;
4146 s->pts_wrap_bits = pts_wrap_bits;
4149 int ff_url_join(char *str, int size, const char *proto,
4150 const char *authorization, const char *hostname,
4151 int port, const char *fmt, ...)
4154 struct addrinfo hints = { 0 }, *ai;
4159 av_strlcatf(str, size, "%s://", proto);
4160 if (authorization && authorization[0])
4161 av_strlcatf(str, size, "%s@", authorization);
4162 #if CONFIG_NETWORK && defined(AF_INET6)
4163 /* Determine if hostname is a numerical IPv6 address,
4164 * properly escape it within [] in that case. */
4165 hints.ai_flags = AI_NUMERICHOST;
4166 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4167 if (ai->ai_family == AF_INET6) {
4168 av_strlcat(str, "[", size);
4169 av_strlcat(str, hostname, size);
4170 av_strlcat(str, "]", size);
4172 av_strlcat(str, hostname, size);
4177 /* Not an IPv6 address, just output the plain string. */
4178 av_strlcat(str, hostname, size);
4181 av_strlcatf(str, size, ":%d", port);
4184 int len = strlen(str);
4187 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4193 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4194 AVFormatContext *src)
4199 local_pkt.stream_index = dst_stream;
4200 if (pkt->pts != AV_NOPTS_VALUE)
4201 local_pkt.pts = av_rescale_q(pkt->pts,
4202 src->streams[pkt->stream_index]->time_base,
4203 dst->streams[dst_stream]->time_base);
4204 if (pkt->dts != AV_NOPTS_VALUE)
4205 local_pkt.dts = av_rescale_q(pkt->dts,
4206 src->streams[pkt->stream_index]->time_base,
4207 dst->streams[dst_stream]->time_base);
4208 return av_write_frame(dst, &local_pkt);
4211 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4214 const char *ptr = str;
4216 /* Parse key=value pairs. */
4219 char *dest = NULL, *dest_end;
4220 int key_len, dest_len = 0;
4222 /* Skip whitespace and potential commas. */
4223 while (*ptr && (isspace(*ptr) || *ptr == ','))
4230 if (!(ptr = strchr(key, '=')))
4233 key_len = ptr - key;
4235 callback_get_buf(context, key, key_len, &dest, &dest_len);
4236 dest_end = dest + dest_len - 1;
4240 while (*ptr && *ptr != '\"') {
4244 if (dest && dest < dest_end)
4248 if (dest && dest < dest_end)
4256 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4257 if (dest && dest < dest_end)
4265 int ff_find_stream_index(AVFormatContext *s, int id)
4268 for (i = 0; i < s->nb_streams; i++) {
4269 if (s->streams[i]->id == id)
4275 void ff_make_absolute_url(char *buf, int size, const char *base,
4279 /* Absolute path, relative to the current server */
4280 if (base && strstr(base, "://") && rel[0] == '/') {
4282 av_strlcpy(buf, base, size);
4283 sep = strstr(buf, "://");
4286 sep = strchr(sep, '/');
4290 av_strlcat(buf, rel, size);
4293 /* If rel actually is an absolute url, just copy it */
4294 if (!base || strstr(rel, "://") || rel[0] == '/') {
4295 av_strlcpy(buf, rel, size);
4299 av_strlcpy(buf, base, size);
4300 /* Remove the file name from the base url */
4301 sep = strrchr(buf, '/');
4306 while (av_strstart(rel, "../", NULL) && sep) {
4307 /* Remove the path delimiter at the end */
4309 sep = strrchr(buf, '/');
4310 /* If the next directory name to pop off is "..", break here */
4311 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4312 /* Readd the slash we just removed */
4313 av_strlcat(buf, "/", size);
4316 /* Cut off the directory name */
4323 av_strlcat(buf, rel, size);
4326 int64_t ff_iso8601_to_unix_time(const char *datestr)
4329 struct tm time1 = {0}, time2 = {0};
4331 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4332 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4334 return av_timegm(&time2);
4336 return av_timegm(&time1);
4338 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4339 "the date string.\n");
4344 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4347 if (ofmt->query_codec)
4348 return ofmt->query_codec(codec_id, std_compliance);
4349 else if (ofmt->codec_tag)
4350 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4351 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4352 codec_id == ofmt->subtitle_codec)
4355 return AVERROR_PATCHWELCOME;
4358 int avformat_network_init(void)
4362 ff_network_inited_globally = 1;
4363 if ((ret = ff_network_init()) < 0)
4370 int avformat_network_deinit(void)
4379 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4380 uint64_t channel_layout, int32_t sample_rate,
4381 int32_t width, int32_t height)
4387 return AVERROR(EINVAL);
4390 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4392 if (channel_layout) {
4394 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4398 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4400 if (width || height) {
4402 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4404 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4406 return AVERROR(ENOMEM);
4407 bytestream_put_le32(&data, flags);
4409 bytestream_put_le32(&data, channels);
4411 bytestream_put_le64(&data, channel_layout);
4413 bytestream_put_le32(&data, sample_rate);
4414 if (width || height) {
4415 bytestream_put_le32(&data, width);
4416 bytestream_put_le32(&data, height);
4421 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4423 return ff_codec_bmp_tags;
4425 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4427 return ff_codec_wav_tags;
4430 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4432 AVRational undef = {0, 1};
4433 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4434 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4435 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4437 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4438 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4439 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4440 stream_sample_aspect_ratio = undef;
4442 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4443 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4444 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4445 frame_sample_aspect_ratio = undef;
4447 if (stream_sample_aspect_ratio.num)
4448 return stream_sample_aspect_ratio;
4450 return frame_sample_aspect_ratio;