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
23 #include "libavcodec/opt.h"
25 #include "libavutil/avstring.h"
35 * @file libavformat/utils.c
36 * various utility functions for use within FFmpeg
39 unsigned avformat_version(void)
41 return LIBAVFORMAT_VERSION_INT;
44 const char *avformat_configuration(void)
46 return FFMPEG_CONFIGURATION;
49 const char *avformat_license(void)
51 #define LICENSE_PREFIX "libavformat license: "
52 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
55 /* fraction handling */
58 * f = val + (num / den) + 0.5.
60 * 'num' is normalized so that it is such as 0 <= num < den.
62 * @param f fractional number
63 * @param val integer value
64 * @param num must be >= 0
65 * @param den must be >= 1
67 static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
80 * Fractional addition to f: f = f + (incr / f->den).
82 * @param f fractional number
83 * @param incr increment, can be positive or negative
85 static void av_frac_add(AVFrac *f, int64_t incr)
98 } else if (num >= den) {
105 /** head of registered input format linked list */
106 AVInputFormat *first_iformat = NULL;
107 /** head of registered output format linked list */
108 AVOutputFormat *first_oformat = NULL;
110 AVInputFormat *av_iformat_next(AVInputFormat *f)
112 if(f) return f->next;
113 else return first_iformat;
116 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
118 if(f) return f->next;
119 else return first_oformat;
122 void av_register_input_format(AVInputFormat *format)
126 while (*p != NULL) p = &(*p)->next;
131 void av_register_output_format(AVOutputFormat *format)
135 while (*p != NULL) p = &(*p)->next;
140 #if LIBAVFORMAT_VERSION_MAJOR < 53
141 int match_ext(const char *filename, const char *extensions)
143 return av_match_ext(filename, extensions);
147 int av_match_ext(const char *filename, const char *extensions)
155 ext = strrchr(filename, '.');
161 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
164 if (!strcasecmp(ext1, ext))
174 static int match_format(const char *name, const char *names)
182 namelen = strlen(name);
183 while ((p = strchr(names, ','))) {
184 len = FFMAX(p - names, namelen);
185 if (!strncasecmp(name, names, len))
189 return !strcasecmp(name, names);
192 #if LIBAVFORMAT_VERSION_MAJOR < 53
193 AVOutputFormat *guess_format(const char *short_name, const char *filename,
194 const char *mime_type)
196 return av_guess_format(short_name, filename, mime_type);
200 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
201 const char *mime_type)
203 AVOutputFormat *fmt, *fmt_found;
204 int score_max, score;
206 /* specific test for image sequences */
207 #if CONFIG_IMAGE2_MUXER
208 if (!short_name && filename &&
209 av_filename_number_test(filename) &&
210 av_guess_image2_codec(filename) != CODEC_ID_NONE) {
211 return av_guess_format("image2", NULL, NULL);
214 /* Find the proper file type. */
218 while (fmt != NULL) {
220 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
222 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
224 if (filename && fmt->extensions &&
225 av_match_ext(filename, fmt->extensions)) {
228 if (score > score_max) {
237 #if LIBAVFORMAT_VERSION_MAJOR < 53
238 AVOutputFormat *guess_stream_format(const char *short_name, const char *filename,
239 const char *mime_type)
241 AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
244 AVOutputFormat *stream_fmt;
245 char stream_format_name[64];
247 snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
248 stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
258 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
259 const char *filename, const char *mime_type, enum CodecType type){
260 if(type == CODEC_TYPE_VIDEO){
261 enum CodecID codec_id= CODEC_ID_NONE;
263 #if CONFIG_IMAGE2_MUXER
264 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
265 codec_id= av_guess_image2_codec(filename);
268 if(codec_id == CODEC_ID_NONE)
269 codec_id= fmt->video_codec;
271 }else if(type == CODEC_TYPE_AUDIO)
272 return fmt->audio_codec;
274 return CODEC_ID_NONE;
277 AVInputFormat *av_find_input_format(const char *short_name)
280 for(fmt = first_iformat; fmt != NULL; fmt = fmt->next) {
281 if (match_format(short_name, fmt->name))
287 /* memory handling */
290 int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)
292 int ret= av_new_packet(pkt, size);
297 pkt->pos= url_ftell(s);
299 ret= get_buffer(s, pkt->data, size);
303 av_shrink_packet(pkt, ret);
309 int av_filename_number_test(const char *filename)
312 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
315 static AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
317 AVInputFormat *fmt1, *fmt;
321 for(fmt1 = first_iformat; fmt1 != NULL; fmt1 = fmt1->next) {
322 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
325 if (fmt1->read_probe) {
326 score = fmt1->read_probe(pd);
327 } else if (fmt1->extensions) {
328 if (av_match_ext(pd->filename, fmt1->extensions)) {
332 if (score > *score_max) {
335 }else if (score == *score_max)
341 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
343 return av_probe_input_format2(pd, is_opened, &score);
346 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd, int score)
349 fmt = av_probe_input_format2(pd, 1, &score);
352 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
353 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
354 if (!strcmp(fmt->name, "mp3")) {
355 st->codec->codec_id = CODEC_ID_MP3;
356 st->codec->codec_type = CODEC_TYPE_AUDIO;
357 } else if (!strcmp(fmt->name, "ac3")) {
358 st->codec->codec_id = CODEC_ID_AC3;
359 st->codec->codec_type = CODEC_TYPE_AUDIO;
360 } else if (!strcmp(fmt->name, "eac3")) {
361 st->codec->codec_id = CODEC_ID_EAC3;
362 st->codec->codec_type = CODEC_TYPE_AUDIO;
363 } else if (!strcmp(fmt->name, "mpegvideo")) {
364 st->codec->codec_id = CODEC_ID_MPEG2VIDEO;
365 st->codec->codec_type = CODEC_TYPE_VIDEO;
366 } else if (!strcmp(fmt->name, "m4v")) {
367 st->codec->codec_id = CODEC_ID_MPEG4;
368 st->codec->codec_type = CODEC_TYPE_VIDEO;
369 } else if (!strcmp(fmt->name, "h264")) {
370 st->codec->codec_id = CODEC_ID_H264;
371 st->codec->codec_type = CODEC_TYPE_VIDEO;
372 } else if (!strcmp(fmt->name, "dts")) {
373 st->codec->codec_id = CODEC_ID_DTS;
374 st->codec->codec_type = CODEC_TYPE_AUDIO;
380 /************************************************************/
381 /* input media file */
384 * Open a media file from an IO stream. 'fmt' must be specified.
386 int av_open_input_stream(AVFormatContext **ic_ptr,
387 ByteIOContext *pb, const char *filename,
388 AVInputFormat *fmt, AVFormatParameters *ap)
392 AVFormatParameters default_ap;
396 memset(ap, 0, sizeof(default_ap));
399 if(!ap->prealloced_context)
400 ic = avformat_alloc_context();
404 err = AVERROR(ENOMEM);
409 ic->duration = AV_NOPTS_VALUE;
410 ic->start_time = AV_NOPTS_VALUE;
411 av_strlcpy(ic->filename, filename, sizeof(ic->filename));
413 /* allocate private data */
414 if (fmt->priv_data_size > 0) {
415 ic->priv_data = av_mallocz(fmt->priv_data_size);
416 if (!ic->priv_data) {
417 err = AVERROR(ENOMEM);
421 ic->priv_data = NULL;
424 if (ic->iformat->read_header) {
425 err = ic->iformat->read_header(ic, ap);
430 if (pb && !ic->data_offset)
431 ic->data_offset = url_ftell(ic->pb);
433 #if LIBAVFORMAT_VERSION_MAJOR < 53
434 ff_metadata_demux_compat(ic);
437 ic->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
444 av_freep(&ic->priv_data);
445 for(i=0;i<ic->nb_streams;i++) {
446 AVStream *st = ic->streams[i];
448 av_free(st->priv_data);
449 av_free(st->codec->extradata);
459 /** size of probe buffer, for guessing file type from file contents */
460 #define PROBE_BUF_MIN 2048
461 #define PROBE_BUF_MAX (1<<20)
463 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
466 AVFormatParameters *ap)
469 AVProbeData probe_data, *pd = &probe_data;
470 ByteIOContext *pb = NULL;
471 void *logctx= ap && ap->prealloced_context ? *ic_ptr : NULL;
475 pd->filename = filename;
480 /* guess format if no file can be opened */
481 fmt = av_probe_input_format(pd, 0);
484 /* Do not open file if the format does not need it. XXX: specific
485 hack needed to handle RTSP/TCP */
486 if (!fmt || !(fmt->flags & AVFMT_NOFILE)) {
487 /* if no file needed do not try to open one */
488 if ((err=url_fopen(&pb, filename, URL_RDONLY)) < 0) {
492 url_setbufsize(pb, buf_size);
495 for(probe_size= PROBE_BUF_MIN; probe_size<=PROBE_BUF_MAX && !fmt; probe_size<<=1){
496 int score= probe_size < PROBE_BUF_MAX ? AVPROBE_SCORE_MAX/4 : 0;
497 /* read probe data */
498 pd->buf= av_realloc(pd->buf, probe_size + AVPROBE_PADDING_SIZE);
499 pd->buf_size = get_buffer(pb, pd->buf, probe_size);
501 if ((int)pd->buf_size < 0) {
506 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
507 if (url_fseek(pb, 0, SEEK_SET) < 0) {
509 if (url_fopen(&pb, filename, URL_RDONLY) < 0) {
515 /* guess file format */
516 fmt = av_probe_input_format2(pd, 1, &score);
518 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
519 av_log(logctx, AV_LOG_WARNING, "Format detected only with low score of %d, misdetection possible!\n", score);
521 av_log(logctx, AV_LOG_DEBUG, "Probed with size=%d and score=%d\n", probe_size, score);
527 /* if still no format found, error */
533 /* check filename in case an image number is expected */
534 if (fmt->flags & AVFMT_NEEDNUMBER) {
535 if (!av_filename_number_test(filename)) {
536 err = AVERROR_NUMEXPECTED;
540 err = av_open_input_stream(ic_ptr, pb, filename, fmt, ap);
548 if (ap && ap->prealloced_context)
555 /*******************************************************/
557 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
558 AVPacketList **plast_pktl){
559 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
564 (*plast_pktl)->next = pktl;
566 *packet_buffer = pktl;
568 /* add the packet in the buffered packet list */
574 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
580 AVPacketList *pktl = s->raw_packet_buffer;
584 if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE ||
585 !s->streams[pkt->stream_index]->probe_packets ||
586 s->raw_packet_buffer_remaining_size < pkt->size){
587 AVProbeData *pd = &s->streams[pkt->stream_index]->probe_data;
590 s->raw_packet_buffer = pktl->next;
591 s->raw_packet_buffer_remaining_size += pkt->size;
598 ret= s->iformat->read_packet(s, pkt);
600 if (!pktl || ret == AVERROR(EAGAIN))
602 for (i = 0; i < s->nb_streams; i++)
603 s->streams[i]->probe_packets = 0;
606 st= s->streams[pkt->stream_index];
608 switch(st->codec->codec_type){
609 case CODEC_TYPE_VIDEO:
610 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
612 case CODEC_TYPE_AUDIO:
613 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
615 case CODEC_TYPE_SUBTITLE:
616 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
620 if(!pktl && (st->codec->codec_id != CODEC_ID_PROBE ||
624 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
625 s->raw_packet_buffer_remaining_size -= pkt->size;
627 if(st->codec->codec_id == CODEC_ID_PROBE){
628 AVProbeData *pd = &st->probe_data;
629 av_log(s, AV_LOG_DEBUG, "probing stream %d\n", st->index);
632 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
633 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
634 pd->buf_size += pkt->size;
635 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
637 if(av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
638 set_codec_from_probe_data(s, st, pd, 1);
639 if(st->codec->codec_id != CODEC_ID_PROBE){
642 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
649 /**********************************************************/
652 * Get the number of samples of an audio frame. Return -1 on error.
654 static int get_audio_frame_size(AVCodecContext *enc, int size)
658 if(enc->codec_id == CODEC_ID_VORBIS)
661 if (enc->frame_size <= 1) {
662 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
664 if (bits_per_sample) {
665 if (enc->channels == 0)
667 frame_size = (size << 3) / (bits_per_sample * enc->channels);
669 /* used for example by ADPCM codecs */
670 if (enc->bit_rate == 0)
672 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
675 frame_size = enc->frame_size;
682 * Return the frame duration in seconds. Return 0 if not available.
684 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
685 AVCodecParserContext *pc, AVPacket *pkt)
691 switch(st->codec->codec_type) {
692 case CODEC_TYPE_VIDEO:
693 if(st->time_base.num*1000LL > st->time_base.den){
694 *pnum = st->time_base.num;
695 *pden = st->time_base.den;
696 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
697 *pnum = st->codec->time_base.num;
698 *pden = st->codec->time_base.den;
699 if (pc && pc->repeat_pict) {
700 *pnum = (*pnum) * (1 + pc->repeat_pict);
704 case CODEC_TYPE_AUDIO:
705 frame_size = get_audio_frame_size(st->codec, pkt->size);
709 *pden = st->codec->sample_rate;
716 static int is_intra_only(AVCodecContext *enc){
717 if(enc->codec_type == CODEC_TYPE_AUDIO){
719 }else if(enc->codec_type == CODEC_TYPE_VIDEO){
720 switch(enc->codec_id){
722 case CODEC_ID_MJPEGB:
724 case CODEC_ID_RAWVIDEO:
725 case CODEC_ID_DVVIDEO:
726 case CODEC_ID_HUFFYUV:
727 case CODEC_ID_FFVHUFF:
732 case CODEC_ID_JPEG2000:
740 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
741 int64_t dts, int64_t pts)
743 AVStream *st= s->streams[stream_index];
744 AVPacketList *pktl= s->packet_buffer;
746 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
749 st->first_dts= dts - st->cur_dts;
752 for(; pktl; pktl= pktl->next){
753 if(pktl->pkt.stream_index != stream_index)
755 //FIXME think more about this check
756 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
757 pktl->pkt.pts += st->first_dts;
759 if(pktl->pkt.dts != AV_NOPTS_VALUE)
760 pktl->pkt.dts += st->first_dts;
762 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
763 st->start_time= pktl->pkt.pts;
765 if (st->start_time == AV_NOPTS_VALUE)
766 st->start_time = pts;
769 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
771 AVPacketList *pktl= s->packet_buffer;
774 if(st->first_dts != AV_NOPTS_VALUE){
775 cur_dts= st->first_dts;
776 for(; pktl; pktl= pktl->next){
777 if(pktl->pkt.stream_index == pkt->stream_index){
778 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
780 cur_dts -= pkt->duration;
783 pktl= s->packet_buffer;
784 st->first_dts = cur_dts;
785 }else if(st->cur_dts)
788 for(; pktl; pktl= pktl->next){
789 if(pktl->pkt.stream_index != pkt->stream_index)
791 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
792 && !pktl->pkt.duration){
793 pktl->pkt.dts= cur_dts;
794 if(!st->codec->has_b_frames)
795 pktl->pkt.pts= cur_dts;
796 cur_dts += pkt->duration;
797 pktl->pkt.duration= pkt->duration;
801 if(st->first_dts == AV_NOPTS_VALUE)
802 st->cur_dts= cur_dts;
805 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
806 AVCodecParserContext *pc, AVPacket *pkt)
808 int num, den, presentation_delayed, delay, i;
811 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
812 pkt->dts= AV_NOPTS_VALUE;
814 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == FF_B_TYPE)
815 //FIXME Set low_delay = 0 when has_b_frames = 1
816 st->codec->has_b_frames = 1;
818 /* do we have a video B-frame ? */
819 delay= st->codec->has_b_frames;
820 presentation_delayed = 0;
821 /* XXX: need has_b_frame, but cannot get it if the codec is
824 pc && pc->pict_type != FF_B_TYPE)
825 presentation_delayed = 1;
827 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts > pkt->pts && st->pts_wrap_bits<63
828 /*&& pkt->dts-(1LL<<st->pts_wrap_bits) < pkt->pts*/){
829 pkt->dts -= 1LL<<st->pts_wrap_bits;
832 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
833 // we take the conservative approach and discard both
834 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
835 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
836 av_log(s, AV_LOG_WARNING, "invalid dts/pts combination\n");
837 pkt->dts= pkt->pts= AV_NOPTS_VALUE;
840 if (pkt->duration == 0) {
841 compute_frame_duration(&num, &den, st, pc, pkt);
843 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
845 if(pkt->duration != 0 && s->packet_buffer)
846 update_initial_durations(s, st, pkt);
850 /* correct timestamps with byte offset if demuxers only have timestamps
851 on packet boundaries */
852 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
853 /* this will estimate bitrate based on this frame's duration and size */
854 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
855 if(pkt->pts != AV_NOPTS_VALUE)
857 if(pkt->dts != AV_NOPTS_VALUE)
861 if (pc && pc->dts_sync_point >= 0) {
862 // we have synchronization info from the parser
863 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
865 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
866 if (pkt->dts != AV_NOPTS_VALUE) {
867 // got DTS from the stream, update reference timestamp
868 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
869 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
870 } else if (st->reference_dts != AV_NOPTS_VALUE) {
871 // compute DTS based on reference timestamp
872 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
873 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
875 if (pc->dts_sync_point > 0)
876 st->reference_dts = pkt->dts; // new reference
880 /* This may be redundant, but it should not hurt. */
881 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
882 presentation_delayed = 1;
884 // av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc);
885 /* interpolate PTS and DTS if they are not present */
886 //We skip H264 currently because delay and has_b_frames are not reliably set
887 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
888 if (presentation_delayed) {
889 /* DTS = decompression timestamp */
890 /* PTS = presentation timestamp */
891 if (pkt->dts == AV_NOPTS_VALUE)
892 pkt->dts = st->last_IP_pts;
893 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
894 if (pkt->dts == AV_NOPTS_VALUE)
895 pkt->dts = st->cur_dts;
897 /* this is tricky: the dts must be incremented by the duration
898 of the frame we are displaying, i.e. the last I- or P-frame */
899 if (st->last_IP_duration == 0)
900 st->last_IP_duration = pkt->duration;
901 if(pkt->dts != AV_NOPTS_VALUE)
902 st->cur_dts = pkt->dts + st->last_IP_duration;
903 st->last_IP_duration = pkt->duration;
904 st->last_IP_pts= pkt->pts;
905 /* cannot compute PTS if not present (we can compute it only
906 by knowing the future */
907 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
908 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
909 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
910 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
911 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
912 pkt->pts += pkt->duration;
913 // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%"PRId64" size:%d\n", pkt->stream_index, old_diff, new_diff, pkt->duration, st->cur_dts, pkt->size);
917 /* presentation is not delayed : PTS and DTS are the same */
918 if(pkt->pts == AV_NOPTS_VALUE)
920 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
921 if(pkt->pts == AV_NOPTS_VALUE)
922 pkt->pts = st->cur_dts;
924 if(pkt->pts != AV_NOPTS_VALUE)
925 st->cur_dts = pkt->pts + pkt->duration;
929 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
930 st->pts_buffer[0]= pkt->pts;
931 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
932 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
933 if(pkt->dts == AV_NOPTS_VALUE)
934 pkt->dts= st->pts_buffer[0];
935 if(st->codec->codec_id == CODEC_ID_H264){ //we skiped it above so we try here
936 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
938 if(pkt->dts > st->cur_dts)
939 st->cur_dts = pkt->dts;
942 // av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64"\n", presentation_delayed, delay, pkt->pts, pkt->dts, st->cur_dts);
945 if(is_intra_only(st->codec))
946 pkt->flags |= PKT_FLAG_KEY;
949 /* keyframe computation */
950 if (pc->key_frame == 1)
951 pkt->flags |= PKT_FLAG_KEY;
952 else if (pc->key_frame == -1 && pc->pict_type == FF_I_TYPE)
953 pkt->flags |= PKT_FLAG_KEY;
956 pkt->convergence_duration = pc->convergence_duration;
960 static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
968 /* select current input stream component */
971 if (!st->need_parsing || !st->parser) {
972 /* no parsing needed: we just output the packet as is */
973 /* raw data support */
974 *pkt = st->cur_pkt; st->cur_pkt.data= NULL;
975 compute_pkt_fields(s, st, NULL, pkt);
977 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
978 (pkt->flags & PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
979 ff_reduce_index(s, st->index);
980 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
983 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
984 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
985 st->cur_ptr, st->cur_len,
986 st->cur_pkt.pts, st->cur_pkt.dts,
988 st->cur_pkt.pts = AV_NOPTS_VALUE;
989 st->cur_pkt.dts = AV_NOPTS_VALUE;
990 /* increment read pointer */
994 /* return packet if any */
998 pkt->stream_index = st->index;
999 pkt->pts = st->parser->pts;
1000 pkt->dts = st->parser->dts;
1001 pkt->pos = st->parser->pos;
1002 pkt->destruct = NULL;
1003 compute_pkt_fields(s, st, st->parser, pkt);
1005 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & PKT_FLAG_KEY){
1006 ff_reduce_index(s, st->index);
1007 av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
1008 0, 0, AVINDEX_KEYFRAME);
1015 av_free_packet(&st->cur_pkt);
1020 /* read next packet */
1021 ret = av_read_packet(s, &cur_pkt);
1023 if (ret == AVERROR(EAGAIN))
1025 /* return the last frames, if any */
1026 for(i = 0; i < s->nb_streams; i++) {
1028 if (st->parser && st->need_parsing) {
1029 av_parser_parse2(st->parser, st->codec,
1030 &pkt->data, &pkt->size,
1032 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1038 /* no more packets: really terminate parsing */
1041 st = s->streams[cur_pkt.stream_index];
1042 st->cur_pkt= cur_pkt;
1044 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1045 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1046 st->cur_pkt.pts < st->cur_pkt.dts){
1047 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1048 st->cur_pkt.stream_index,
1052 // av_free_packet(&st->cur_pkt);
1056 if(s->debug & FF_FDEBUG_TS)
1057 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1058 st->cur_pkt.stream_index,
1062 st->cur_pkt.duration,
1066 st->cur_ptr = st->cur_pkt.data;
1067 st->cur_len = st->cur_pkt.size;
1068 if (st->need_parsing && !st->parser) {
1069 st->parser = av_parser_init(st->codec->codec_id);
1071 /* no parser available: just output the raw packets */
1072 st->need_parsing = AVSTREAM_PARSE_NONE;
1073 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1074 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1076 if(st->parser && (s->iformat->flags & AVFMT_GENERIC_INDEX)){
1077 st->parser->next_frame_offset=
1078 st->parser->cur_offset= st->cur_pkt.pos;
1083 if(s->debug & FF_FDEBUG_TS)
1084 av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1095 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1099 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
1102 pktl = s->packet_buffer;
1104 AVPacket *next_pkt= &pktl->pkt;
1106 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
1107 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
1108 if( pktl->pkt.stream_index == next_pkt->stream_index
1109 && next_pkt->dts < pktl->pkt.dts
1110 && pktl->pkt.pts != pktl->pkt.dts //not b frame
1111 /*&& pktl->pkt.dts != AV_NOPTS_VALUE*/){
1112 next_pkt->pts= pktl->pkt.dts;
1116 pktl = s->packet_buffer;
1119 if( next_pkt->pts != AV_NOPTS_VALUE
1120 || next_pkt->dts == AV_NOPTS_VALUE
1122 /* read packet from packet buffer, if there is data */
1124 s->packet_buffer = pktl->next;
1130 int ret= av_read_frame_internal(s, pkt);
1132 if(pktl && ret != AVERROR(EAGAIN)){
1139 if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1140 &s->packet_buffer_end)) < 0)
1141 return AVERROR(ENOMEM);
1143 assert(!s->packet_buffer);
1144 return av_read_frame_internal(s, pkt);
1149 /* XXX: suppress the packet queue */
1150 static void flush_packet_queue(AVFormatContext *s)
1155 pktl = s->packet_buffer;
1158 s->packet_buffer = pktl->next;
1159 av_free_packet(&pktl->pkt);
1162 while(s->raw_packet_buffer){
1163 pktl = s->raw_packet_buffer;
1164 s->raw_packet_buffer = pktl->next;
1165 av_free_packet(&pktl->pkt);
1168 s->packet_buffer_end=
1169 s->raw_packet_buffer_end= NULL;
1170 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1173 /*******************************************************/
1176 int av_find_default_stream_index(AVFormatContext *s)
1178 int first_audio_index = -1;
1182 if (s->nb_streams <= 0)
1184 for(i = 0; i < s->nb_streams; i++) {
1186 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1189 if (first_audio_index < 0 && st->codec->codec_type == CODEC_TYPE_AUDIO)
1190 first_audio_index = i;
1192 return first_audio_index >= 0 ? first_audio_index : 0;
1196 * Flush the frame reader.
1198 void av_read_frame_flush(AVFormatContext *s)
1203 flush_packet_queue(s);
1207 /* for each stream, reset read state */
1208 for(i = 0; i < s->nb_streams; i++) {
1212 av_parser_close(st->parser);
1214 av_free_packet(&st->cur_pkt);
1216 st->last_IP_pts = AV_NOPTS_VALUE;
1217 st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1218 st->reference_dts = AV_NOPTS_VALUE;
1223 st->probe_packets = MAX_PROBE_PACKETS;
1225 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1226 st->pts_buffer[j]= AV_NOPTS_VALUE;
1230 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
1233 for(i = 0; i < s->nb_streams; i++) {
1234 AVStream *st = s->streams[i];
1236 st->cur_dts = av_rescale(timestamp,
1237 st->time_base.den * (int64_t)ref_st->time_base.num,
1238 st->time_base.num * (int64_t)ref_st->time_base.den);
1242 void ff_reduce_index(AVFormatContext *s, int stream_index)
1244 AVStream *st= s->streams[stream_index];
1245 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1247 if((unsigned)st->nb_index_entries >= max_entries){
1249 for(i=0; 2*i<st->nb_index_entries; i++)
1250 st->index_entries[i]= st->index_entries[2*i];
1251 st->nb_index_entries= i;
1255 int av_add_index_entry(AVStream *st,
1256 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1258 AVIndexEntry *entries, *ie;
1261 if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1264 entries = av_fast_realloc(st->index_entries,
1265 &st->index_entries_allocated_size,
1266 (st->nb_index_entries + 1) *
1267 sizeof(AVIndexEntry));
1271 st->index_entries= entries;
1273 index= av_index_search_timestamp(st, timestamp, AVSEEK_FLAG_ANY);
1276 index= st->nb_index_entries++;
1277 ie= &entries[index];
1278 assert(index==0 || ie[-1].timestamp < timestamp);
1280 ie= &entries[index];
1281 if(ie->timestamp != timestamp){
1282 if(ie->timestamp <= timestamp)
1284 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(st->nb_index_entries - index));
1285 st->nb_index_entries++;
1286 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1287 distance= ie->min_distance;
1291 ie->timestamp = timestamp;
1292 ie->min_distance= distance;
1299 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1302 AVIndexEntry *entries= st->index_entries;
1303 int nb_entries= st->nb_index_entries;
1312 timestamp = entries[m].timestamp;
1313 if(timestamp >= wanted_timestamp)
1315 if(timestamp <= wanted_timestamp)
1318 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1320 if(!(flags & AVSEEK_FLAG_ANY)){
1321 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1322 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1333 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1334 AVInputFormat *avif= s->iformat;
1335 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1336 int64_t ts_min, ts_max, ts;
1341 if (stream_index < 0)
1345 av_log(s, AV_LOG_DEBUG, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1349 ts_min= AV_NOPTS_VALUE;
1350 pos_limit= -1; //gcc falsely says it may be uninitialized
1352 st= s->streams[stream_index];
1353 if(st->index_entries){
1356 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()
1357 index= FFMAX(index, 0);
1358 e= &st->index_entries[index];
1360 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1362 ts_min= e->timestamp;
1364 av_log(s, AV_LOG_DEBUG, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1371 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1372 assert(index < st->nb_index_entries);
1374 e= &st->index_entries[index];
1375 assert(e->timestamp >= target_ts);
1377 ts_max= e->timestamp;
1378 pos_limit= pos_max - e->min_distance;
1380 av_log(s, AV_LOG_DEBUG, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1381 pos_max,pos_limit, ts_max);
1386 pos= av_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1391 if ((ret = url_fseek(s->pb, pos, SEEK_SET)) < 0)
1394 av_update_cur_dts(s, st, ts);
1399 int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts, int64_t pos_min, int64_t pos_max, int64_t pos_limit, int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret, int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )){
1401 int64_t start_pos, filesize;
1405 av_log(s, AV_LOG_DEBUG, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1408 if(ts_min == AV_NOPTS_VALUE){
1409 pos_min = s->data_offset;
1410 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1411 if (ts_min == AV_NOPTS_VALUE)
1415 if(ts_max == AV_NOPTS_VALUE){
1417 filesize = url_fsize(s->pb);
1418 pos_max = filesize - 1;
1421 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1423 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1424 if (ts_max == AV_NOPTS_VALUE)
1428 int64_t tmp_pos= pos_max + 1;
1429 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1430 if(tmp_ts == AV_NOPTS_VALUE)
1434 if(tmp_pos >= filesize)
1440 if(ts_min > ts_max){
1442 }else if(ts_min == ts_max){
1447 while (pos_min < pos_limit) {
1449 av_log(s, AV_LOG_DEBUG, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1453 assert(pos_limit <= pos_max);
1456 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1457 // interpolate position (better than dichotomy)
1458 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1459 + pos_min - approximate_keyframe_distance;
1460 }else if(no_change==1){
1461 // bisection, if interpolation failed to change min or max pos last time
1462 pos = (pos_min + pos_limit)>>1;
1464 /* linear search if bisection failed, can only happen if there
1465 are very few or no keyframes between min/max */
1470 else if(pos > pos_limit)
1474 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1480 av_log(s, AV_LOG_DEBUG, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1481 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit,
1482 start_pos, no_change);
1484 if(ts == AV_NOPTS_VALUE){
1485 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1488 assert(ts != AV_NOPTS_VALUE);
1489 if (target_ts <= ts) {
1490 pos_limit = start_pos - 1;
1494 if (target_ts >= ts) {
1500 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1501 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1504 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1506 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1507 av_log(s, AV_LOG_DEBUG, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1508 pos, ts_min, target_ts, ts_max);
1514 static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1515 int64_t pos_min, pos_max;
1519 if (stream_index < 0)
1522 st= s->streams[stream_index];
1525 pos_min = s->data_offset;
1526 pos_max = url_fsize(s->pb) - 1;
1528 if (pos < pos_min) pos= pos_min;
1529 else if(pos > pos_max) pos= pos_max;
1531 url_fseek(s->pb, pos, SEEK_SET);
1534 av_update_cur_dts(s, st, ts);
1539 static int av_seek_frame_generic(AVFormatContext *s,
1540 int stream_index, int64_t timestamp, int flags)
1547 st = s->streams[stream_index];
1549 index = av_index_search_timestamp(st, timestamp, flags);
1551 if(index < 0 || index==st->nb_index_entries-1){
1555 if(st->nb_index_entries){
1556 assert(st->index_entries);
1557 ie= &st->index_entries[st->nb_index_entries-1];
1558 if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
1560 av_update_cur_dts(s, st, ie->timestamp);
1562 if ((ret = url_fseek(s->pb, s->data_offset, SEEK_SET)) < 0)
1568 ret = av_read_frame(s, &pkt);
1569 }while(ret == AVERROR(EAGAIN));
1572 av_free_packet(&pkt);
1573 if(stream_index == pkt.stream_index){
1574 if((pkt.flags & PKT_FLAG_KEY) && pkt.dts > timestamp)
1578 index = av_index_search_timestamp(st, timestamp, flags);
1583 av_read_frame_flush(s);
1584 if (s->iformat->read_seek){
1585 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1588 ie = &st->index_entries[index];
1589 if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
1591 av_update_cur_dts(s, st, ie->timestamp);
1596 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1601 av_read_frame_flush(s);
1603 if(flags & AVSEEK_FLAG_BYTE)
1604 return av_seek_frame_byte(s, stream_index, timestamp, flags);
1606 if(stream_index < 0){
1607 stream_index= av_find_default_stream_index(s);
1608 if(stream_index < 0)
1611 st= s->streams[stream_index];
1612 /* timestamp for default must be expressed in AV_TIME_BASE units */
1613 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1616 /* first, we try the format specific seek */
1617 if (s->iformat->read_seek)
1618 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1625 if(s->iformat->read_timestamp)
1626 return av_seek_frame_binary(s, stream_index, timestamp, flags);
1628 return av_seek_frame_generic(s, stream_index, timestamp, flags);
1631 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1633 if(min_ts > ts || max_ts < ts)
1636 av_read_frame_flush(s);
1638 if (s->iformat->read_seek2)
1639 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1641 if(s->iformat->read_timestamp){
1642 //try to seek via read_timestamp()
1645 //Fallback to old API if new is not implemented but old is
1646 //Note the old has somewat different sematics
1647 if(s->iformat->read_seek || 1)
1648 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1650 // try some generic seek like av_seek_frame_generic() but with new ts semantics
1653 /*******************************************************/
1656 * Returns TRUE if the stream has accurate duration in any stream.
1658 * @return TRUE if the stream has accurate duration for at least one component.
1660 static int av_has_duration(AVFormatContext *ic)
1665 for(i = 0;i < ic->nb_streams; i++) {
1666 st = ic->streams[i];
1667 if (st->duration != AV_NOPTS_VALUE)
1674 * Estimate the stream timings from the one of each components.
1676 * Also computes the global bitrate if possible.
1678 static void av_update_stream_timings(AVFormatContext *ic)
1680 int64_t start_time, start_time1, end_time, end_time1;
1681 int64_t duration, duration1;
1685 start_time = INT64_MAX;
1686 end_time = INT64_MIN;
1687 duration = INT64_MIN;
1688 for(i = 0;i < ic->nb_streams; i++) {
1689 st = ic->streams[i];
1690 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1691 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1692 if (start_time1 < start_time)
1693 start_time = start_time1;
1694 if (st->duration != AV_NOPTS_VALUE) {
1695 end_time1 = start_time1
1696 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1697 if (end_time1 > end_time)
1698 end_time = end_time1;
1701 if (st->duration != AV_NOPTS_VALUE) {
1702 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1703 if (duration1 > duration)
1704 duration = duration1;
1707 if (start_time != INT64_MAX) {
1708 ic->start_time = start_time;
1709 if (end_time != INT64_MIN) {
1710 if (end_time - start_time > duration)
1711 duration = end_time - start_time;
1714 if (duration != INT64_MIN) {
1715 ic->duration = duration;
1716 if (ic->file_size > 0) {
1717 /* compute the bitrate */
1718 ic->bit_rate = (double)ic->file_size * 8.0 * AV_TIME_BASE /
1719 (double)ic->duration;
1724 static void fill_all_stream_timings(AVFormatContext *ic)
1729 av_update_stream_timings(ic);
1730 for(i = 0;i < ic->nb_streams; i++) {
1731 st = ic->streams[i];
1732 if (st->start_time == AV_NOPTS_VALUE) {
1733 if(ic->start_time != AV_NOPTS_VALUE)
1734 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
1735 if(ic->duration != AV_NOPTS_VALUE)
1736 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
1741 static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
1743 int64_t filesize, duration;
1747 /* if bit_rate is already set, we believe it */
1748 if (ic->bit_rate == 0) {
1750 for(i=0;i<ic->nb_streams;i++) {
1751 st = ic->streams[i];
1752 bit_rate += st->codec->bit_rate;
1754 ic->bit_rate = bit_rate;
1757 /* if duration is already set, we believe it */
1758 if (ic->duration == AV_NOPTS_VALUE &&
1759 ic->bit_rate != 0 &&
1760 ic->file_size != 0) {
1761 filesize = ic->file_size;
1763 for(i = 0; i < ic->nb_streams; i++) {
1764 st = ic->streams[i];
1765 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
1766 if (st->duration == AV_NOPTS_VALUE)
1767 st->duration = duration;
1773 #define DURATION_MAX_READ_SIZE 250000
1775 /* only usable for MPEG-PS streams */
1776 static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
1778 AVPacket pkt1, *pkt = &pkt1;
1780 int read_size, i, ret;
1781 int64_t end_time, start_time[MAX_STREAMS];
1782 int64_t filesize, offset, duration;
1786 /* flush packet queue */
1787 flush_packet_queue(ic);
1789 for(i=0;i<ic->nb_streams;i++) {
1790 st = ic->streams[i];
1791 if(st->start_time != AV_NOPTS_VALUE){
1792 start_time[i]= st->start_time;
1793 }else if(st->first_dts != AV_NOPTS_VALUE){
1794 start_time[i]= st->first_dts;
1796 av_log(st->codec, AV_LOG_WARNING, "start time is not set in av_estimate_timings_from_pts\n");
1799 av_parser_close(st->parser);
1801 av_free_packet(&st->cur_pkt);
1805 /* estimate the end time (duration) */
1806 /* XXX: may need to support wrapping */
1807 filesize = ic->file_size;
1808 offset = filesize - DURATION_MAX_READ_SIZE;
1812 url_fseek(ic->pb, offset, SEEK_SET);
1815 if (read_size >= DURATION_MAX_READ_SIZE)
1819 ret = av_read_packet(ic, pkt);
1820 }while(ret == AVERROR(EAGAIN));
1823 read_size += pkt->size;
1824 st = ic->streams[pkt->stream_index];
1825 if (pkt->pts != AV_NOPTS_VALUE &&
1826 start_time[pkt->stream_index] != AV_NOPTS_VALUE) {
1827 end_time = pkt->pts;
1828 duration = end_time - start_time[pkt->stream_index];
1830 duration += 1LL<<st->pts_wrap_bits;
1832 if (st->duration == AV_NOPTS_VALUE ||
1833 st->duration < duration)
1834 st->duration = duration;
1837 av_free_packet(pkt);
1840 fill_all_stream_timings(ic);
1842 url_fseek(ic->pb, old_offset, SEEK_SET);
1843 for(i=0; i<ic->nb_streams; i++){
1845 st->cur_dts= st->first_dts;
1846 st->last_IP_pts = AV_NOPTS_VALUE;
1850 static void av_estimate_timings(AVFormatContext *ic, int64_t old_offset)
1854 /* get the file size, if possible */
1855 if (ic->iformat->flags & AVFMT_NOFILE) {
1858 file_size = url_fsize(ic->pb);
1862 ic->file_size = file_size;
1864 if ((!strcmp(ic->iformat->name, "mpeg") ||
1865 !strcmp(ic->iformat->name, "mpegts")) &&
1866 file_size && !url_is_streamed(ic->pb)) {
1867 /* get accurate estimate from the PTSes */
1868 av_estimate_timings_from_pts(ic, old_offset);
1869 } else if (av_has_duration(ic)) {
1870 /* at least one component has timings - we use them for all
1872 fill_all_stream_timings(ic);
1874 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
1875 /* less precise: use bitrate info */
1876 av_estimate_timings_from_bit_rate(ic);
1878 av_update_stream_timings(ic);
1884 for(i = 0;i < ic->nb_streams; i++) {
1885 st = ic->streams[i];
1886 printf("%d: start_time: %0.3f duration: %0.3f\n",
1887 i, (double)st->start_time / AV_TIME_BASE,
1888 (double)st->duration / AV_TIME_BASE);
1890 printf("stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
1891 (double)ic->start_time / AV_TIME_BASE,
1892 (double)ic->duration / AV_TIME_BASE,
1893 ic->bit_rate / 1000);
1898 static int has_codec_parameters(AVCodecContext *enc)
1901 switch(enc->codec_type) {
1902 case CODEC_TYPE_AUDIO:
1903 val = enc->sample_rate && enc->channels && enc->sample_fmt != SAMPLE_FMT_NONE;
1904 if(!enc->frame_size &&
1905 (enc->codec_id == CODEC_ID_VORBIS ||
1906 enc->codec_id == CODEC_ID_AAC ||
1907 enc->codec_id == CODEC_ID_MP3 ||
1908 enc->codec_id == CODEC_ID_SPEEX))
1911 case CODEC_TYPE_VIDEO:
1912 val = enc->width && enc->pix_fmt != PIX_FMT_NONE;
1918 return enc->codec_id != CODEC_ID_NONE && val != 0;
1921 static int try_decode_frame(AVStream *st, AVPacket *avpkt)
1925 int got_picture, data_size, ret=0;
1928 if(!st->codec->codec){
1929 codec = avcodec_find_decoder(st->codec->codec_id);
1932 ret = avcodec_open(st->codec, codec);
1937 if(!has_codec_parameters(st->codec)){
1938 switch(st->codec->codec_type) {
1939 case CODEC_TYPE_VIDEO:
1940 avcodec_get_frame_defaults(&picture);
1941 ret = avcodec_decode_video2(st->codec, &picture,
1942 &got_picture, avpkt);
1944 case CODEC_TYPE_AUDIO:
1945 data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
1946 samples = av_malloc(data_size);
1949 ret = avcodec_decode_audio3(st->codec, samples,
1961 unsigned int ff_codec_get_tag(const AVCodecTag *tags, int id)
1963 while (tags->id != CODEC_ID_NONE) {
1971 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
1974 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
1975 if(tag == tags[i].tag)
1978 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
1979 if( toupper((tag >> 0)&0xFF) == toupper((tags[i].tag >> 0)&0xFF)
1980 && toupper((tag >> 8)&0xFF) == toupper((tags[i].tag >> 8)&0xFF)
1981 && toupper((tag >>16)&0xFF) == toupper((tags[i].tag >>16)&0xFF)
1982 && toupper((tag >>24)&0xFF) == toupper((tags[i].tag >>24)&0xFF))
1985 return CODEC_ID_NONE;
1988 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
1991 for(i=0; tags && tags[i]; i++){
1992 int tag= ff_codec_get_tag(tags[i], id);
1998 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2001 for(i=0; tags && tags[i]; i++){
2002 enum CodecID id= ff_codec_get_id(tags[i], tag);
2003 if(id!=CODEC_ID_NONE) return id;
2005 return CODEC_ID_NONE;
2008 static void compute_chapters_end(AVFormatContext *s)
2012 for (i=0; i+1<s->nb_chapters; i++)
2013 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2014 assert(s->chapters[i]->start <= s->chapters[i+1]->start);
2015 assert(!av_cmp_q(s->chapters[i]->time_base, s->chapters[i+1]->time_base));
2016 s->chapters[i]->end = s->chapters[i+1]->start;
2019 if (s->nb_chapters && s->chapters[i]->end == AV_NOPTS_VALUE) {
2020 assert(s->start_time != AV_NOPTS_VALUE);
2021 assert(s->duration > 0);
2022 s->chapters[i]->end = av_rescale_q(s->start_time + s->duration,
2024 s->chapters[i]->time_base);
2028 #define MAX_STD_TIMEBASES (60*12+5)
2029 static int get_std_framerate(int i){
2030 if(i<60*12) return i*1001;
2031 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2035 * Is the time base unreliable.
2036 * This is a heuristic to balance between quick acceptance of the values in
2037 * the headers vs. some extra checks.
2038 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2039 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2040 * And there are "variable" fps files this needs to detect as well.
2042 static int tb_unreliable(AVCodecContext *c){
2043 if( c->time_base.den >= 101L*c->time_base.num
2044 || c->time_base.den < 5L*c->time_base.num
2045 /* || c->codec_tag == AV_RL32("DIVX")
2046 || c->codec_tag == AV_RL32("XVID")*/
2047 || c->codec_id == CODEC_ID_MPEG2VIDEO
2048 || c->codec_id == CODEC_ID_H264
2054 int av_find_stream_info(AVFormatContext *ic)
2056 int i, count, ret, read_size, j;
2058 AVPacket pkt1, *pkt;
2059 int64_t last_dts[MAX_STREAMS];
2060 int64_t duration_gcd[MAX_STREAMS]={0};
2061 int duration_count[MAX_STREAMS]={0};
2062 double (*duration_error)[MAX_STD_TIMEBASES];
2063 int64_t old_offset = url_ftell(ic->pb);
2064 int64_t codec_info_duration[MAX_STREAMS]={0};
2065 int codec_info_nb_frames[MAX_STREAMS]={0};
2067 duration_error = av_mallocz(MAX_STREAMS * sizeof(*duration_error));
2068 if (!duration_error) return AVERROR(ENOMEM);
2070 for(i=0;i<ic->nb_streams;i++) {
2071 st = ic->streams[i];
2072 if(st->codec->codec_type == CODEC_TYPE_VIDEO){
2073 /* if(!st->time_base.num)
2075 if(!st->codec->time_base.num)
2076 st->codec->time_base= st->time_base;
2078 //only for the split stuff
2080 st->parser = av_parser_init(st->codec->codec_id);
2081 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2082 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2087 for(i=0;i<MAX_STREAMS;i++){
2088 last_dts[i]= AV_NOPTS_VALUE;
2094 if(url_interrupt_cb()){
2095 ret= AVERROR(EINTR);
2096 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2100 /* check if one codec still needs to be handled */
2101 for(i=0;i<ic->nb_streams;i++) {
2102 st = ic->streams[i];
2103 if (!has_codec_parameters(st->codec))
2105 /* variable fps and no guess at the real fps */
2106 if( tb_unreliable(st->codec)
2107 && duration_count[i]<20 && st->codec->codec_type == CODEC_TYPE_VIDEO)
2109 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2111 if(st->first_dts == AV_NOPTS_VALUE)
2114 if (i == ic->nb_streams) {
2115 /* NOTE: if the format has no header, then we need to read
2116 some packets to get most of the streams, so we cannot
2118 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2119 /* if we found the info for all the codecs, we can stop */
2121 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2125 /* we did not get all the codec info, but we read too much data */
2126 if (read_size >= ic->probesize) {
2128 av_log(ic, AV_LOG_WARNING, "MAX_READ_SIZE:%d reached\n", ic->probesize);
2132 /* NOTE: a new stream can be added there if no header in file
2133 (AVFMTCTX_NOHEADER) */
2134 ret = av_read_frame_internal(ic, &pkt1);
2135 if(ret == AVERROR(EAGAIN))
2139 ret = -1; /* we could not have all the codec parameters before EOF */
2140 for(i=0;i<ic->nb_streams;i++) {
2141 st = ic->streams[i];
2142 if (!has_codec_parameters(st->codec)){
2144 avcodec_string(buf, sizeof(buf), st->codec, 0);
2145 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2153 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2154 if(av_dup_packet(pkt) < 0) {
2155 av_free(duration_error);
2156 return AVERROR(ENOMEM);
2159 read_size += pkt->size;
2161 st = ic->streams[pkt->stream_index];
2162 if(codec_info_nb_frames[st->index]>1) {
2163 if (st->time_base.den > 0 && av_rescale_q(codec_info_duration[st->index], st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration){
2164 av_log(ic, AV_LOG_WARNING, "max_analyze_duration reached\n");
2167 codec_info_duration[st->index] += pkt->duration;
2169 if (pkt->duration != 0)
2170 codec_info_nb_frames[st->index]++;
2173 int index= pkt->stream_index;
2174 int64_t last= last_dts[index];
2175 int64_t duration= pkt->dts - last;
2177 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
2178 double dur= duration * av_q2d(st->time_base);
2180 // if(st->codec->codec_type == CODEC_TYPE_VIDEO)
2181 // av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
2182 if(duration_count[index] < 2)
2183 memset(duration_error[index], 0, sizeof(*duration_error));
2184 for(i=1; i<MAX_STD_TIMEBASES; i++){
2185 int framerate= get_std_framerate(i);
2186 int ticks= lrintf(dur*framerate/(1001*12));
2187 double error= dur - ticks*1001*12/(double)framerate;
2188 duration_error[index][i] += error*error;
2190 duration_count[index]++;
2191 // ignore the first 4 values, they might have some random jitter
2192 if (duration_count[index] > 3)
2193 duration_gcd[index] = av_gcd(duration_gcd[index], duration);
2195 if(last == AV_NOPTS_VALUE || duration_count[index]<=1)
2196 last_dts[pkt->stream_index]= pkt->dts;
2198 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2199 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2201 st->codec->extradata_size= i;
2202 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2203 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2204 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2208 /* if still no information, we try to open the codec and to
2209 decompress the frame. We try to avoid that in most cases as
2210 it takes longer and uses more memory. For MPEG-4, we need to
2211 decompress for QuickTime. */
2212 if (!has_codec_parameters(st->codec))
2213 try_decode_frame(st, pkt);
2218 // close codecs which were opened in try_decode_frame()
2219 for(i=0;i<ic->nb_streams;i++) {
2220 st = ic->streams[i];
2221 if(st->codec->codec)
2222 avcodec_close(st->codec);
2224 for(i=0;i<ic->nb_streams;i++) {
2225 st = ic->streams[i];
2226 if(codec_info_nb_frames[i]>2 && !st->avg_frame_rate.num)
2227 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2228 (codec_info_nb_frames[i]-2)*(int64_t)st->time_base.den,
2229 codec_info_duration[i] *(int64_t)st->time_base.num, 60000);
2230 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
2231 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample)
2232 st->codec->codec_tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2234 // the check for tb_unreliable() is not completely correct, since this is not about handling
2235 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2236 // ipmovie.c produces.
2237 if (tb_unreliable(st->codec) && duration_count[i] > 15 && duration_gcd[i] > 1)
2238 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * duration_gcd[i], INT_MAX);
2239 if(duration_count[i]
2240 && tb_unreliable(st->codec) /*&&
2241 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2242 st->time_base.num*duration_sum[i]/duration_count[i]*101LL > st->time_base.den*/){
2244 double best_error= 2*av_q2d(st->time_base);
2245 best_error= best_error*best_error*duration_count[i]*1000*12*30;
2247 for(j=1; j<MAX_STD_TIMEBASES; j++){
2248 double error= duration_error[i][j] * get_std_framerate(j);
2249 // if(st->codec->codec_type == CODEC_TYPE_VIDEO)
2250 // av_log(NULL, AV_LOG_ERROR, "%f %f\n", get_std_framerate(j) / 12.0/1001, error);
2251 if(error < best_error){
2253 num = get_std_framerate(j);
2256 // do not increase frame rate by more than 1 % in order to match a standard rate.
2257 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2258 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2261 if (!st->r_frame_rate.num){
2262 if( st->codec->time_base.den * (int64_t)st->time_base.num
2263 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2264 st->r_frame_rate.num = st->codec->time_base.den;
2265 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2267 st->r_frame_rate.num = st->time_base.den;
2268 st->r_frame_rate.den = st->time_base.num;
2271 }else if(st->codec->codec_type == CODEC_TYPE_AUDIO) {
2272 if(!st->codec->bits_per_coded_sample)
2273 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2277 av_estimate_timings(ic, old_offset);
2279 compute_chapters_end(ic);
2282 /* correct DTS for B-frame streams with no timestamps */
2283 for(i=0;i<ic->nb_streams;i++) {
2284 st = ic->streams[i];
2285 if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
2287 ppktl = &ic->packet_buffer;
2289 if(ppkt1->stream_index != i)
2291 if(ppkt1->pkt->dts < 0)
2293 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2295 ppkt1->pkt->dts -= delta;
2300 st->cur_dts -= delta;
2306 av_free(duration_error);
2311 /*******************************************************/
2313 int av_read_play(AVFormatContext *s)
2315 if (s->iformat->read_play)
2316 return s->iformat->read_play(s);
2318 return av_url_read_fpause(s->pb, 0);
2319 return AVERROR(ENOSYS);
2322 int av_read_pause(AVFormatContext *s)
2324 if (s->iformat->read_pause)
2325 return s->iformat->read_pause(s);
2327 return av_url_read_fpause(s->pb, 1);
2328 return AVERROR(ENOSYS);
2331 void av_close_input_stream(AVFormatContext *s)
2336 if (s->iformat->read_close)
2337 s->iformat->read_close(s);
2338 for(i=0;i<s->nb_streams;i++) {
2339 /* free all data in a stream component */
2342 av_parser_close(st->parser);
2343 av_free_packet(&st->cur_pkt);
2345 av_metadata_free(&st->metadata);
2346 av_free(st->index_entries);
2347 av_free(st->codec->extradata);
2349 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2350 av_free(st->filename);
2352 av_free(st->priv_data);
2355 for(i=s->nb_programs-1; i>=0; i--) {
2356 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2357 av_freep(&s->programs[i]->provider_name);
2358 av_freep(&s->programs[i]->name);
2360 av_metadata_free(&s->programs[i]->metadata);
2361 av_freep(&s->programs[i]->stream_index);
2362 av_freep(&s->programs[i]);
2364 av_freep(&s->programs);
2365 flush_packet_queue(s);
2366 av_freep(&s->priv_data);
2367 while(s->nb_chapters--) {
2368 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2369 av_free(s->chapters[s->nb_chapters]->title);
2371 av_metadata_free(&s->chapters[s->nb_chapters]->metadata);
2372 av_free(s->chapters[s->nb_chapters]);
2374 av_freep(&s->chapters);
2375 av_metadata_free(&s->metadata);
2379 void av_close_input_file(AVFormatContext *s)
2381 ByteIOContext *pb = s->iformat->flags & AVFMT_NOFILE ? NULL : s->pb;
2382 av_close_input_stream(s);
2387 AVStream *av_new_stream(AVFormatContext *s, int id)
2392 if (s->nb_streams >= MAX_STREAMS)
2395 st = av_mallocz(sizeof(AVStream));
2399 st->codec= avcodec_alloc_context();
2401 /* no default bitrate if decoding */
2402 st->codec->bit_rate = 0;
2404 st->index = s->nb_streams;
2406 st->start_time = AV_NOPTS_VALUE;
2407 st->duration = AV_NOPTS_VALUE;
2408 /* we set the current DTS to 0 so that formats without any timestamps
2409 but durations get some timestamps, formats with some unknown
2410 timestamps have their first few packets buffered and the
2411 timestamps corrected before they are returned to the user */
2413 st->first_dts = AV_NOPTS_VALUE;
2414 st->probe_packets = MAX_PROBE_PACKETS;
2416 /* default pts setting is MPEG-like */
2417 av_set_pts_info(st, 33, 1, 90000);
2418 st->last_IP_pts = AV_NOPTS_VALUE;
2419 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2420 st->pts_buffer[i]= AV_NOPTS_VALUE;
2421 st->reference_dts = AV_NOPTS_VALUE;
2423 st->sample_aspect_ratio = (AVRational){0,1};
2425 s->streams[s->nb_streams++] = st;
2429 AVProgram *av_new_program(AVFormatContext *ac, int id)
2431 AVProgram *program=NULL;
2435 av_log(ac, AV_LOG_DEBUG, "new_program: id=0x%04x\n", id);
2438 for(i=0; i<ac->nb_programs; i++)
2439 if(ac->programs[i]->id == id)
2440 program = ac->programs[i];
2443 program = av_mallocz(sizeof(AVProgram));
2446 dynarray_add(&ac->programs, &ac->nb_programs, program);
2447 program->discard = AVDISCARD_NONE;
2454 AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2456 AVChapter *chapter = NULL;
2459 for(i=0; i<s->nb_chapters; i++)
2460 if(s->chapters[i]->id == id)
2461 chapter = s->chapters[i];
2464 chapter= av_mallocz(sizeof(AVChapter));
2467 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2469 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2470 av_free(chapter->title);
2472 av_metadata_set(&chapter->metadata, "title", title);
2474 chapter->time_base= time_base;
2475 chapter->start = start;
2481 /************************************************************/
2482 /* output media file */
2484 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2488 if (s->oformat->priv_data_size > 0) {
2489 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2491 return AVERROR(ENOMEM);
2493 s->priv_data = NULL;
2495 if (s->oformat->set_parameters) {
2496 ret = s->oformat->set_parameters(s, ap);
2503 int av_write_header(AVFormatContext *s)
2508 // some sanity checks
2509 if (s->nb_streams == 0) {
2510 av_log(s, AV_LOG_ERROR, "no streams\n");
2514 for(i=0;i<s->nb_streams;i++) {
2517 switch (st->codec->codec_type) {
2518 case CODEC_TYPE_AUDIO:
2519 if(st->codec->sample_rate<=0){
2520 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
2523 if(!st->codec->block_align)
2524 st->codec->block_align = st->codec->channels *
2525 av_get_bits_per_sample(st->codec->codec_id) >> 3;
2527 case CODEC_TYPE_VIDEO:
2528 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
2529 av_log(s, AV_LOG_ERROR, "time base not set\n");
2532 if(st->codec->width<=0 || st->codec->height<=0){
2533 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
2536 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)){
2537 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
2543 if(s->oformat->codec_tag){
2544 if(st->codec->codec_tag){
2546 //check that tag + id is in the table
2547 //if neither is in the table -> OK
2548 //if tag is in the table with another id -> FAIL
2549 //if id is in the table with another tag -> FAIL unless strict < ?
2551 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
2554 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
2555 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
2556 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
2559 if (!s->priv_data && s->oformat->priv_data_size > 0) {
2560 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2562 return AVERROR(ENOMEM);
2565 #if LIBAVFORMAT_VERSION_MAJOR < 53
2566 ff_metadata_mux_compat(s);
2569 if(s->oformat->write_header){
2570 ret = s->oformat->write_header(s);
2575 /* init PTS generation */
2576 for(i=0;i<s->nb_streams;i++) {
2577 int64_t den = AV_NOPTS_VALUE;
2580 switch (st->codec->codec_type) {
2581 case CODEC_TYPE_AUDIO:
2582 den = (int64_t)st->time_base.num * st->codec->sample_rate;
2584 case CODEC_TYPE_VIDEO:
2585 den = (int64_t)st->time_base.num * st->codec->time_base.den;
2590 if (den != AV_NOPTS_VALUE) {
2592 return AVERROR_INVALIDDATA;
2593 av_frac_init(&st->pts, 0, 0, den);
2599 //FIXME merge with compute_pkt_fields
2600 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
2601 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
2602 int num, den, frame_size, i;
2604 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
2606 /* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
2609 /* duration field */
2610 if (pkt->duration == 0) {
2611 compute_frame_duration(&num, &den, st, NULL, pkt);
2613 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
2617 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
2620 //XXX/FIXME this is a temporary hack until all encoders output pts
2621 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
2623 // pkt->pts= st->cur_dts;
2624 pkt->pts= st->pts.val;
2627 //calculate dts from pts
2628 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
2629 st->pts_buffer[0]= pkt->pts;
2630 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
2631 st->pts_buffer[i]= (i-delay-1) * pkt->duration;
2632 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
2633 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
2635 pkt->dts= st->pts_buffer[0];
2638 if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
2639 av_log(s, AV_LOG_ERROR,
2640 "st:%d error, non monotone timestamps %"PRId64" >= %"PRId64"\n",
2641 st->index, st->cur_dts, pkt->dts);
2644 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
2645 av_log(s, AV_LOG_ERROR, "st:%d error, pts < dts\n", st->index);
2649 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
2650 st->cur_dts= pkt->dts;
2651 st->pts.val= pkt->dts;
2654 switch (st->codec->codec_type) {
2655 case CODEC_TYPE_AUDIO:
2656 frame_size = get_audio_frame_size(st->codec, pkt->size);
2658 /* HACK/FIXME, we skip the initial 0 size packets as they are most
2659 likely equal to the encoder delay, but it would be better if we
2660 had the real timestamps from the encoder */
2661 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
2662 av_frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
2665 case CODEC_TYPE_VIDEO:
2666 av_frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
2674 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
2676 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
2678 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2681 ret= s->oformat->write_packet(s, pkt);
2683 ret= url_ferror(s->pb);
2687 void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
2688 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
2690 AVPacketList **next_point, *this_pktl;
2692 this_pktl = av_mallocz(sizeof(AVPacketList));
2693 this_pktl->pkt= *pkt;
2694 pkt->destruct= NULL; // do not free original but only the copy
2695 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
2697 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
2698 next_point = &(s->streams[pkt->stream_index]->last_in_packet_buffer->next);
2700 next_point = &s->packet_buffer;
2703 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
2704 while(!compare(s, &(*next_point)->pkt, pkt)){
2705 next_point= &(*next_point)->next;
2709 next_point = &(s->packet_buffer_end->next);
2712 assert(!*next_point);
2714 s->packet_buffer_end= this_pktl;
2717 this_pktl->next= *next_point;
2719 s->streams[pkt->stream_index]->last_in_packet_buffer=
2720 *next_point= this_pktl;
2723 int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2725 AVStream *st = s->streams[ pkt ->stream_index];
2726 AVStream *st2= s->streams[ next->stream_index];
2727 int64_t left = st2->time_base.num * (int64_t)st ->time_base.den;
2728 int64_t right= st ->time_base.num * (int64_t)st2->time_base.den;
2730 if (pkt->dts == AV_NOPTS_VALUE)
2733 return next->dts * left > pkt->dts * right; //FIXME this can overflow
2736 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
2742 ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
2745 for(i=0; i < s->nb_streams; i++)
2746 stream_count+= !!s->streams[i]->last_in_packet_buffer;
2748 if(stream_count && (s->nb_streams == stream_count || flush)){
2749 pktl= s->packet_buffer;
2752 s->packet_buffer= pktl->next;
2753 if(!s->packet_buffer)
2754 s->packet_buffer_end= NULL;
2756 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
2757 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
2761 av_init_packet(out);
2767 * Interleaves an AVPacket correctly so it can be muxed.
2768 * @param out the interleaved packet will be output here
2769 * @param in the input packet
2770 * @param flush 1 if no further packets are available as input and all
2771 * remaining packets should be output
2772 * @return 1 if a packet was output, 0 if no packet could be output,
2773 * < 0 if an error occurred
2775 static int av_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
2776 if(s->oformat->interleave_packet)
2777 return s->oformat->interleave_packet(s, out, in, flush);
2779 return av_interleave_packet_per_dts(s, out, in, flush);
2782 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
2783 AVStream *st= s->streams[ pkt->stream_index];
2785 //FIXME/XXX/HACK drop zero sized packets
2786 if(st->codec->codec_type == CODEC_TYPE_AUDIO && pkt->size==0)
2789 //av_log(NULL, AV_LOG_DEBUG, "av_interleaved_write_frame %d %"PRId64" %"PRId64"\n", pkt->size, pkt->dts, pkt->pts);
2790 if(compute_pkt_fields2(s, st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2793 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2798 int ret= av_interleave_packet(s, &opkt, pkt, 0);
2799 if(ret<=0) //FIXME cleanup needed for ret<0 ?
2802 ret= s->oformat->write_packet(s, &opkt);
2804 av_free_packet(&opkt);
2809 if(url_ferror(s->pb))
2810 return url_ferror(s->pb);
2814 int av_write_trailer(AVFormatContext *s)
2820 ret= av_interleave_packet(s, &pkt, NULL, 1);
2821 if(ret<0) //FIXME cleanup needed for ret<0 ?
2826 ret= s->oformat->write_packet(s, &pkt);
2828 av_free_packet(&pkt);
2832 if(url_ferror(s->pb))
2836 if(s->oformat->write_trailer)
2837 ret = s->oformat->write_trailer(s);
2840 ret=url_ferror(s->pb);
2841 for(i=0;i<s->nb_streams;i++)
2842 av_freep(&s->streams[i]->priv_data);
2843 av_freep(&s->priv_data);
2847 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
2850 AVProgram *program=NULL;
2853 if (idx >= ac->nb_streams) {
2854 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
2858 for(i=0; i<ac->nb_programs; i++){
2859 if(ac->programs[i]->id != progid)
2861 program = ac->programs[i];
2862 for(j=0; j<program->nb_stream_indexes; j++)
2863 if(program->stream_index[j] == idx)
2866 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
2869 program->stream_index = tmp;
2870 program->stream_index[program->nb_stream_indexes++] = idx;
2875 static void print_fps(double d, const char *postfix){
2876 uint64_t v= lrintf(d*100);
2877 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
2878 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
2879 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
2882 static void dump_metadata(void *ctx, AVMetadata *m, const char *indent)
2884 if(m && !(m->count == 1 && av_metadata_get(m, "language", NULL, 0))){
2885 AVMetadataTag *tag=NULL;
2887 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
2888 while((tag=av_metadata_get(m, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
2889 if(strcmp("language", tag->key))
2890 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tag->value);
2895 /* "user interface" functions */
2896 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
2899 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
2900 AVStream *st = ic->streams[i];
2901 int g = av_gcd(st->time_base.num, st->time_base.den);
2902 AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL, 0);
2903 avcodec_string(buf, sizeof(buf), st->codec, is_output);
2904 av_log(NULL, AV_LOG_INFO, " Stream #%d.%d", index, i);
2905 /* the pid is an important information, so we display it */
2906 /* XXX: add a generic system */
2907 if (flags & AVFMT_SHOW_IDS)
2908 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
2910 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
2911 av_log(NULL, AV_LOG_DEBUG, ", %d/%d", st->time_base.num/g, st->time_base.den/g);
2912 av_log(NULL, AV_LOG_INFO, ": %s", buf);
2913 if (st->sample_aspect_ratio.num && // default
2914 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
2915 AVRational display_aspect_ratio;
2916 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
2917 st->codec->width*st->sample_aspect_ratio.num,
2918 st->codec->height*st->sample_aspect_ratio.den,
2920 av_log(NULL, AV_LOG_INFO, ", PAR %d:%d DAR %d:%d",
2921 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
2922 display_aspect_ratio.num, display_aspect_ratio.den);
2924 if(st->codec->codec_type == CODEC_TYPE_VIDEO){
2925 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
2926 print_fps(av_q2d(st->avg_frame_rate), "fps");
2927 if(st->r_frame_rate.den && st->r_frame_rate.num)
2928 print_fps(av_q2d(st->r_frame_rate), "tbr");
2929 if(st->time_base.den && st->time_base.num)
2930 print_fps(1/av_q2d(st->time_base), "tbn");
2931 if(st->codec->time_base.den && st->codec->time_base.num)
2932 print_fps(1/av_q2d(st->codec->time_base), "tbc");
2934 av_log(NULL, AV_LOG_INFO, "\n");
2935 dump_metadata(NULL, st->metadata, " ");
2938 void dump_format(AVFormatContext *ic,
2944 uint8_t *printed = av_mallocz(ic->nb_streams);
2945 if (ic->nb_streams && !printed)
2948 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
2949 is_output ? "Output" : "Input",
2951 is_output ? ic->oformat->name : ic->iformat->name,
2952 is_output ? "to" : "from", url);
2953 dump_metadata(NULL, ic->metadata, " ");
2955 av_log(NULL, AV_LOG_INFO, " Duration: ");
2956 if (ic->duration != AV_NOPTS_VALUE) {
2957 int hours, mins, secs, us;
2958 secs = ic->duration / AV_TIME_BASE;
2959 us = ic->duration % AV_TIME_BASE;
2964 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
2965 (100 * us) / AV_TIME_BASE);
2967 av_log(NULL, AV_LOG_INFO, "N/A");
2969 if (ic->start_time != AV_NOPTS_VALUE) {
2971 av_log(NULL, AV_LOG_INFO, ", start: ");
2972 secs = ic->start_time / AV_TIME_BASE;
2973 us = ic->start_time % AV_TIME_BASE;
2974 av_log(NULL, AV_LOG_INFO, "%d.%06d",
2975 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
2977 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
2979 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
2981 av_log(NULL, AV_LOG_INFO, "N/A");
2983 av_log(NULL, AV_LOG_INFO, "\n");
2985 if(ic->nb_programs) {
2986 int j, k, total = 0;
2987 for(j=0; j<ic->nb_programs; j++) {
2988 AVMetadataTag *name = av_metadata_get(ic->programs[j]->metadata,
2990 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
2991 name ? name->value : "");
2992 dump_metadata(NULL, ic->programs[j]->metadata, " ");
2993 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
2994 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
2995 printed[ic->programs[j]->stream_index[k]] = 1;
2997 total += ic->programs[j]->nb_stream_indexes;
2999 if (total < ic->nb_streams)
3000 av_log(NULL, AV_LOG_INFO, " No Program\n");
3002 for(i=0;i<ic->nb_streams;i++)
3004 dump_stream_format(ic, i, index, is_output);
3009 #if LIBAVFORMAT_VERSION_MAJOR < 53
3010 int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
3012 return av_parse_video_frame_size(width_ptr, height_ptr, str);
3015 int parse_frame_rate(int *frame_rate_num, int *frame_rate_den, const char *arg)
3017 AVRational frame_rate;
3018 int ret = av_parse_video_frame_rate(&frame_rate, arg);
3019 *frame_rate_num= frame_rate.num;
3020 *frame_rate_den= frame_rate.den;
3025 int64_t av_gettime(void)
3028 gettimeofday(&tv,NULL);
3029 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3032 int64_t parse_date(const char *datestr, int duration)
3038 static const char * const date_fmt[] = {
3042 static const char * const time_fmt[] = {
3052 time_t now = time(0);
3054 len = strlen(datestr);
3056 lastch = datestr[len - 1];
3059 is_utc = (lastch == 'z' || lastch == 'Z');
3061 memset(&dt, 0, sizeof(dt));
3066 if (!strncasecmp(datestr, "now", len))
3067 return (int64_t) now * 1000000;
3069 /* parse the year-month-day part */
3070 for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
3071 q = small_strptime(p, date_fmt[i], &dt);
3077 /* if the year-month-day part is missing, then take the
3078 * current year-month-day time */
3083 dt = *localtime(&now);
3085 dt.tm_hour = dt.tm_min = dt.tm_sec = 0;
3090 if (*p == 'T' || *p == 't' || *p == ' ')
3093 /* parse the hour-minute-second part */
3094 for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
3095 q = small_strptime(p, time_fmt[i], &dt);
3101 /* parse datestr as a duration */
3106 /* parse datestr as HH:MM:SS */
3107 q = small_strptime(p, time_fmt[0], &dt);
3109 /* parse datestr as S+ */
3110 dt.tm_sec = strtol(p, (char **)&q, 10);
3112 /* the parsing didn't succeed */
3119 /* Now we have all the fields that we can get */
3125 t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
3127 dt.tm_isdst = -1; /* unknown */
3137 /* parse the .m... part */
3141 for (val = 0, n = 100000; n >= 1; n /= 10, q++) {
3144 val += n * (*q - '0');
3148 return negative ? -t : t;
3151 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3161 while (*p != '\0' && *p != '=' && *p != '&') {
3162 if ((q - tag) < sizeof(tag) - 1)
3170 while (*p != '&' && *p != '\0') {
3171 if ((q - arg) < arg_size - 1) {
3181 if (!strcmp(tag, tag1))
3190 int av_get_frame_filename(char *buf, int buf_size,
3191 const char *path, int number)
3194 char *q, buf1[20], c;
3195 int nd, len, percentd_found;
3207 while (isdigit(*p)) {
3208 nd = nd * 10 + *p++ - '0';
3211 } while (isdigit(c));
3220 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3222 if ((q - buf + len) > buf_size - 1)
3224 memcpy(q, buf1, len);
3232 if ((q - buf) < buf_size - 1)
3236 if (!percentd_found)
3245 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3249 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3251 for(i=0;i<size;i+=16) {
3258 PRINT(" %02x", buf[i+j]);
3263 for(j=0;j<len;j++) {
3265 if (c < ' ' || c > '~')
3274 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3276 hex_dump_internal(NULL, f, 0, buf, size);
3279 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3281 hex_dump_internal(avcl, NULL, level, buf, size);
3284 //FIXME needs to know the time_base
3285 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
3288 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3289 PRINT("stream #%d:\n", pkt->stream_index);
3290 PRINT(" keyframe=%d\n", ((pkt->flags & PKT_FLAG_KEY) != 0));
3291 PRINT(" duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
3292 /* DTS is _always_ valid after av_read_frame() */
3294 if (pkt->dts == AV_NOPTS_VALUE)
3297 PRINT("%0.3f", (double)pkt->dts / AV_TIME_BASE);
3298 /* PTS may not be known if B-frames are present. */
3300 if (pkt->pts == AV_NOPTS_VALUE)
3303 PRINT("%0.3f", (double)pkt->pts / AV_TIME_BASE);
3305 PRINT(" size=%d\n", pkt->size);
3308 av_hex_dump(f, pkt->data, pkt->size);
3311 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3313 pkt_dump_internal(NULL, f, 0, pkt, dump_payload);
3316 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3318 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload);
3321 void url_split(char *proto, int proto_size,
3322 char *authorization, int authorization_size,
3323 char *hostname, int hostname_size,
3325 char *path, int path_size,
3328 const char *p, *ls, *at, *col, *brk;
3330 if (port_ptr) *port_ptr = -1;
3331 if (proto_size > 0) proto[0] = 0;
3332 if (authorization_size > 0) authorization[0] = 0;
3333 if (hostname_size > 0) hostname[0] = 0;
3334 if (path_size > 0) path[0] = 0;
3336 /* parse protocol */
3337 if ((p = strchr(url, ':'))) {
3338 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3343 /* no protocol means plain filename */
3344 av_strlcpy(path, url, path_size);
3348 /* separate path from hostname */
3349 ls = strchr(p, '/');
3351 ls = strchr(p, '?');
3353 av_strlcpy(path, ls, path_size);
3355 ls = &p[strlen(p)]; // XXX
3357 /* the rest is hostname, use that to parse auth/port */
3359 /* authorization (user[:pass]@hostname) */
3360 if ((at = strchr(p, '@')) && at < ls) {
3361 av_strlcpy(authorization, p,
3362 FFMIN(authorization_size, at + 1 - p));
3363 p = at + 1; /* skip '@' */
3366 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3368 av_strlcpy(hostname, p + 1,
3369 FFMIN(hostname_size, brk - p));
3370 if (brk[1] == ':' && port_ptr)
3371 *port_ptr = atoi(brk + 2);
3372 } else if ((col = strchr(p, ':')) && col < ls) {
3373 av_strlcpy(hostname, p,
3374 FFMIN(col + 1 - p, hostname_size));
3375 if (port_ptr) *port_ptr = atoi(col + 1);
3377 av_strlcpy(hostname, p,
3378 FFMIN(ls + 1 - p, hostname_size));
3382 char *ff_data_to_hex(char *buff, const uint8_t *src, int s)
3385 static const char hex_table[16] = { '0', '1', '2', '3',
3388 'C', 'D', 'E', 'F' };
3390 for(i = 0; i < s; i++) {
3391 buff[i * 2] = hex_table[src[i] >> 4];
3392 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3398 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3399 unsigned int pts_num, unsigned int pts_den)
3401 s->pts_wrap_bits = pts_wrap_bits;
3403 if(av_reduce(&s->time_base.num, &s->time_base.den, pts_num, pts_den, INT_MAX)){
3404 if(s->time_base.num != pts_num)
3405 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/s->time_base.num);
3407 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3409 if(!s->time_base.num || !s->time_base.den)
3410 s->time_base.num= s->time_base.den= 0;