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/internal.h"
24 #include "libavcodec/opt.h"
26 #include "libavutil/avstring.h"
28 #include "audiointerleave.h"
42 * various utility functions for use within FFmpeg
45 unsigned avformat_version(void)
47 return LIBAVFORMAT_VERSION_INT;
50 const char *avformat_configuration(void)
52 return FFMPEG_CONFIGURATION;
55 const char *avformat_license(void)
57 #define LICENSE_PREFIX "libavformat license: "
58 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
61 /* fraction handling */
64 * f = val + (num / den) + 0.5.
66 * 'num' is normalized so that it is such as 0 <= num < den.
68 * @param f fractional number
69 * @param val integer value
70 * @param num must be >= 0
71 * @param den must be >= 1
73 static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
86 * Fractional addition to f: f = f + (incr / f->den).
88 * @param f fractional number
89 * @param incr increment, can be positive or negative
91 static void av_frac_add(AVFrac *f, int64_t incr)
104 } else if (num >= den) {
111 /** head of registered input format linked list */
112 AVInputFormat *first_iformat = NULL;
113 /** head of registered output format linked list */
114 AVOutputFormat *first_oformat = NULL;
116 AVInputFormat *av_iformat_next(AVInputFormat *f)
118 if(f) return f->next;
119 else return first_iformat;
122 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
124 if(f) return f->next;
125 else return first_oformat;
128 void av_register_input_format(AVInputFormat *format)
132 while (*p != NULL) p = &(*p)->next;
137 void av_register_output_format(AVOutputFormat *format)
141 while (*p != NULL) p = &(*p)->next;
146 int av_match_ext(const char *filename, const char *extensions)
154 ext = strrchr(filename, '.');
160 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
163 if (!strcasecmp(ext1, ext))
173 static int match_format(const char *name, const char *names)
181 namelen = strlen(name);
182 while ((p = strchr(names, ','))) {
183 len = FFMAX(p - names, namelen);
184 if (!strncasecmp(name, names, len))
188 return !strcasecmp(name, names);
191 #if LIBAVFORMAT_VERSION_MAJOR < 53
192 AVOutputFormat *guess_format(const char *short_name, const char *filename,
193 const char *mime_type)
195 return av_guess_format(short_name, filename, mime_type);
199 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
200 const char *mime_type)
202 AVOutputFormat *fmt, *fmt_found;
203 int score_max, score;
205 /* specific test for image sequences */
206 #if CONFIG_IMAGE2_MUXER
207 if (!short_name && filename &&
208 av_filename_number_test(filename) &&
209 av_guess_image2_codec(filename) != CODEC_ID_NONE) {
210 return av_guess_format("image2", NULL, NULL);
213 /* Find the proper file type. */
217 while (fmt != NULL) {
219 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
221 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
223 if (filename && fmt->extensions &&
224 av_match_ext(filename, fmt->extensions)) {
227 if (score > score_max) {
236 #if LIBAVFORMAT_VERSION_MAJOR < 53
237 AVOutputFormat *guess_stream_format(const char *short_name, const char *filename,
238 const char *mime_type)
240 AVOutputFormat *fmt = av_guess_format(short_name, filename, mime_type);
243 AVOutputFormat *stream_fmt;
244 char stream_format_name[64];
246 snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
247 stream_fmt = av_guess_format(stream_format_name, NULL, NULL);
257 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
258 const char *filename, const char *mime_type, enum AVMediaType type){
259 if(type == AVMEDIA_TYPE_VIDEO){
260 enum CodecID codec_id= CODEC_ID_NONE;
262 #if CONFIG_IMAGE2_MUXER
263 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
264 codec_id= av_guess_image2_codec(filename);
267 if(codec_id == CODEC_ID_NONE)
268 codec_id= fmt->video_codec;
270 }else if(type == AVMEDIA_TYPE_AUDIO)
271 return fmt->audio_codec;
273 return CODEC_ID_NONE;
276 AVInputFormat *av_find_input_format(const char *short_name)
279 for(fmt = first_iformat; fmt != NULL; fmt = fmt->next) {
280 if (match_format(short_name, fmt->name))
286 #if LIBAVFORMAT_VERSION_MAJOR < 53 && CONFIG_SHARED && HAVE_SYMVER
287 FF_SYMVER(void, av_destruct_packet_nofree, (AVPacket *pkt), "LIBAVFORMAT_52")
289 av_destruct_packet_nofree(pkt);
292 FF_SYMVER(void, av_destruct_packet, (AVPacket *pkt), "LIBAVFORMAT_52")
294 av_destruct_packet(pkt);
297 FF_SYMVER(int, av_new_packet, (AVPacket *pkt, int size), "LIBAVFORMAT_52")
299 return av_new_packet(pkt, size);
302 FF_SYMVER(int, av_dup_packet, (AVPacket *pkt), "LIBAVFORMAT_52")
304 return av_dup_packet(pkt);
307 FF_SYMVER(void, av_free_packet, (AVPacket *pkt), "LIBAVFORMAT_52")
312 FF_SYMVER(void, av_init_packet, (AVPacket *pkt), "LIBAVFORMAT_52")
314 av_log(NULL, AV_LOG_WARNING, "Diverting av_*_packet function calls to libavcodec. Recompile to improve performance\n");
319 int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)
321 int ret= av_new_packet(pkt, size);
326 pkt->pos= url_ftell(s);
328 ret= get_buffer(s, pkt->data, size);
332 av_shrink_packet(pkt, ret);
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_format2(AVProbeData *pd, int is_opened, int *score_max)
346 AVInputFormat *fmt1, *fmt;
350 for(fmt1 = first_iformat; fmt1 != NULL; fmt1 = fmt1->next) {
351 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
354 if (fmt1->read_probe) {
355 score = fmt1->read_probe(pd);
356 } else if (fmt1->extensions) {
357 if (av_match_ext(pd->filename, fmt1->extensions)) {
361 if (score > *score_max) {
364 }else if (score == *score_max)
370 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
372 return av_probe_input_format2(pd, is_opened, &score);
375 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd, int score)
377 static const struct {
378 const char *name; enum CodecID id; enum AVMediaType type;
380 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
381 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
382 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
383 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
384 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
385 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
386 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
387 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
390 AVInputFormat *fmt = av_probe_input_format2(pd, 1, &score);
394 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
395 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
396 for (i = 0; fmt_id_type[i].name; i++) {
397 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
398 st->codec->codec_id = fmt_id_type[i].id;
399 st->codec->codec_type = fmt_id_type[i].type;
407 /************************************************************/
408 /* input media file */
411 * Open a media file from an IO stream. 'fmt' must be specified.
413 int av_open_input_stream(AVFormatContext **ic_ptr,
414 ByteIOContext *pb, const char *filename,
415 AVInputFormat *fmt, AVFormatParameters *ap)
419 AVFormatParameters default_ap;
423 memset(ap, 0, sizeof(default_ap));
426 if(!ap->prealloced_context)
427 ic = avformat_alloc_context();
431 err = AVERROR(ENOMEM);
436 ic->duration = AV_NOPTS_VALUE;
437 ic->start_time = AV_NOPTS_VALUE;
438 av_strlcpy(ic->filename, filename, sizeof(ic->filename));
440 /* allocate private data */
441 if (fmt->priv_data_size > 0) {
442 ic->priv_data = av_mallocz(fmt->priv_data_size);
443 if (!ic->priv_data) {
444 err = AVERROR(ENOMEM);
448 ic->priv_data = NULL;
451 if (ic->iformat->read_header) {
452 err = ic->iformat->read_header(ic, ap);
457 if (pb && !ic->data_offset)
458 ic->data_offset = url_ftell(ic->pb);
460 #if LIBAVFORMAT_VERSION_MAJOR < 53
461 ff_metadata_demux_compat(ic);
464 ic->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
471 av_freep(&ic->priv_data);
472 for(i=0;i<ic->nb_streams;i++) {
473 AVStream *st = ic->streams[i];
475 av_free(st->priv_data);
476 av_free(st->codec->extradata);
486 /** size of probe buffer, for guessing file type from file contents */
487 #define PROBE_BUF_MIN 2048
488 #define PROBE_BUF_MAX (1<<20)
490 int ff_probe_input_buffer(ByteIOContext **pb, AVInputFormat **fmt,
491 const char *filename, void *logctx,
492 unsigned int offset, unsigned int max_probe_size)
494 AVProbeData pd = { filename ? filename : "", NULL, -offset };
495 unsigned char *buf = NULL;
496 int ret = 0, probe_size;
498 if (!max_probe_size) {
499 max_probe_size = PROBE_BUF_MAX;
500 } else if (max_probe_size > PROBE_BUF_MAX) {
501 max_probe_size = PROBE_BUF_MAX;
502 } else if (max_probe_size < PROBE_BUF_MIN) {
503 return AVERROR(EINVAL);
506 if (offset >= max_probe_size) {
507 return AVERROR(EINVAL);
510 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt && ret >= 0;
511 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
512 int ret, score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
513 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
515 if (probe_size < offset) {
519 /* read probe data */
520 buf = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
521 if ((ret = get_buffer(*pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
522 /* fail if error was not end of file, otherwise, lower score */
523 if (ret != AVERROR_EOF) {
528 ret = 0; /* error was end of file, nothing read */
531 pd.buf = &buf[offset];
533 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
535 /* guess file format */
536 *fmt = av_probe_input_format2(&pd, 1, &score);
538 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
539 av_log(logctx, AV_LOG_WARNING, "Format detected only with low score of %d, misdetection possible!\n", score);
541 av_log(logctx, AV_LOG_DEBUG, "Probed with size=%d and score=%d\n", probe_size, score);
547 return AVERROR_INVALIDDATA;
550 /* rewind. reuse probe buffer to avoid seeking */
551 if ((ret = ff_rewind_with_probe_data(*pb, buf, pd.buf_size)) < 0)
557 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
560 AVFormatParameters *ap)
563 AVProbeData probe_data, *pd = &probe_data;
564 ByteIOContext *pb = NULL;
565 void *logctx= ap && ap->prealloced_context ? *ic_ptr : NULL;
569 pd->filename = filename;
574 /* guess format if no file can be opened */
575 fmt = av_probe_input_format(pd, 0);
578 /* Do not open file if the format does not need it. XXX: specific
579 hack needed to handle RTSP/TCP */
580 if (!fmt || !(fmt->flags & AVFMT_NOFILE)) {
581 /* if no file needed do not try to open one */
582 if ((err=url_fopen(&pb, filename, URL_RDONLY)) < 0) {
586 url_setbufsize(pb, buf_size);
588 if (!fmt && (err = ff_probe_input_buffer(&pb, &fmt, filename, logctx, 0, logctx ? (*ic_ptr)->probesize : 0)) < 0) {
593 /* if still no format found, error */
595 err = AVERROR_INVALIDDATA;
599 /* check filename in case an image number is expected */
600 if (fmt->flags & AVFMT_NEEDNUMBER) {
601 if (!av_filename_number_test(filename)) {
602 err = AVERROR_NUMEXPECTED;
606 err = av_open_input_stream(ic_ptr, pb, filename, fmt, ap);
614 if (ap && ap->prealloced_context)
621 /*******************************************************/
623 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
624 AVPacketList **plast_pktl){
625 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
630 (*plast_pktl)->next = pktl;
632 *packet_buffer = pktl;
634 /* add the packet in the buffered packet list */
640 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
646 AVPacketList *pktl = s->raw_packet_buffer;
650 if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE ||
651 !s->streams[pkt->stream_index]->probe_packets ||
652 s->raw_packet_buffer_remaining_size < pkt->size){
653 AVProbeData *pd = &s->streams[pkt->stream_index]->probe_data;
656 s->raw_packet_buffer = pktl->next;
657 s->raw_packet_buffer_remaining_size += pkt->size;
664 ret= s->iformat->read_packet(s, pkt);
666 if (!pktl || ret == AVERROR(EAGAIN))
668 for (i = 0; i < s->nb_streams; i++)
669 s->streams[i]->probe_packets = 0;
672 st= s->streams[pkt->stream_index];
674 switch(st->codec->codec_type){
675 case AVMEDIA_TYPE_VIDEO:
676 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
678 case AVMEDIA_TYPE_AUDIO:
679 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
681 case AVMEDIA_TYPE_SUBTITLE:
682 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
686 if(!pktl && (st->codec->codec_id != CODEC_ID_PROBE ||
690 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
691 s->raw_packet_buffer_remaining_size -= pkt->size;
693 if(st->codec->codec_id == CODEC_ID_PROBE){
694 AVProbeData *pd = &st->probe_data;
695 av_log(s, AV_LOG_DEBUG, "probing stream %d\n", st->index);
698 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
699 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
700 pd->buf_size += pkt->size;
701 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
703 if(av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
704 //FIXME we dont reduce score to 0 for the case of running out of buffer space in bytes
705 set_codec_from_probe_data(s, st, pd, st->probe_packets > 0 ? AVPROBE_SCORE_MAX/4 : 0);
706 if(st->codec->codec_id != CODEC_ID_PROBE){
709 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
716 /**********************************************************/
719 * Get the number of samples of an audio frame. Return -1 on error.
721 static int get_audio_frame_size(AVCodecContext *enc, int size)
725 if(enc->codec_id == CODEC_ID_VORBIS)
728 if (enc->frame_size <= 1) {
729 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
731 if (bits_per_sample) {
732 if (enc->channels == 0)
734 frame_size = (size << 3) / (bits_per_sample * enc->channels);
736 /* used for example by ADPCM codecs */
737 if (enc->bit_rate == 0)
739 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
742 frame_size = enc->frame_size;
749 * Return the frame duration in seconds. Return 0 if not available.
751 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
752 AVCodecParserContext *pc, AVPacket *pkt)
758 switch(st->codec->codec_type) {
759 case AVMEDIA_TYPE_VIDEO:
760 if(st->time_base.num*1000LL > st->time_base.den){
761 *pnum = st->time_base.num;
762 *pden = st->time_base.den;
763 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
764 *pnum = st->codec->time_base.num;
765 *pden = st->codec->time_base.den;
766 if (pc && pc->repeat_pict) {
767 *pnum = (*pnum) * (1 + pc->repeat_pict);
769 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
770 //Thus if we have no parser in such case leave duration undefined.
771 if(st->codec->ticks_per_frame>1 && !pc){
776 case AVMEDIA_TYPE_AUDIO:
777 frame_size = get_audio_frame_size(st->codec, pkt->size);
781 *pden = st->codec->sample_rate;
788 static int is_intra_only(AVCodecContext *enc){
789 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
791 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
792 switch(enc->codec_id){
794 case CODEC_ID_MJPEGB:
796 case CODEC_ID_RAWVIDEO:
797 case CODEC_ID_DVVIDEO:
798 case CODEC_ID_HUFFYUV:
799 case CODEC_ID_FFVHUFF:
804 case CODEC_ID_JPEG2000:
812 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
813 int64_t dts, int64_t pts)
815 AVStream *st= s->streams[stream_index];
816 AVPacketList *pktl= s->packet_buffer;
818 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
821 st->first_dts= dts - st->cur_dts;
824 for(; pktl; pktl= pktl->next){
825 if(pktl->pkt.stream_index != stream_index)
827 //FIXME think more about this check
828 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
829 pktl->pkt.pts += st->first_dts;
831 if(pktl->pkt.dts != AV_NOPTS_VALUE)
832 pktl->pkt.dts += st->first_dts;
834 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
835 st->start_time= pktl->pkt.pts;
837 if (st->start_time == AV_NOPTS_VALUE)
838 st->start_time = pts;
841 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
843 AVPacketList *pktl= s->packet_buffer;
846 if(st->first_dts != AV_NOPTS_VALUE){
847 cur_dts= st->first_dts;
848 for(; pktl; pktl= pktl->next){
849 if(pktl->pkt.stream_index == pkt->stream_index){
850 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
852 cur_dts -= pkt->duration;
855 pktl= s->packet_buffer;
856 st->first_dts = cur_dts;
857 }else if(st->cur_dts)
860 for(; pktl; pktl= pktl->next){
861 if(pktl->pkt.stream_index != pkt->stream_index)
863 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
864 && !pktl->pkt.duration){
865 pktl->pkt.dts= cur_dts;
866 if(!st->codec->has_b_frames)
867 pktl->pkt.pts= cur_dts;
868 cur_dts += pkt->duration;
869 pktl->pkt.duration= pkt->duration;
873 if(st->first_dts == AV_NOPTS_VALUE)
874 st->cur_dts= cur_dts;
877 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
878 AVCodecParserContext *pc, AVPacket *pkt)
880 int num, den, presentation_delayed, delay, i;
883 if (s->flags & AVFMT_FLAG_NOFILLIN)
886 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
887 pkt->dts= AV_NOPTS_VALUE;
889 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == FF_B_TYPE)
890 //FIXME Set low_delay = 0 when has_b_frames = 1
891 st->codec->has_b_frames = 1;
893 /* do we have a video B-frame ? */
894 delay= st->codec->has_b_frames;
895 presentation_delayed = 0;
896 /* XXX: need has_b_frame, but cannot get it if the codec is
899 pc && pc->pict_type != FF_B_TYPE)
900 presentation_delayed = 1;
902 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts > pkt->pts && st->pts_wrap_bits<63
903 /*&& pkt->dts-(1LL<<st->pts_wrap_bits) < pkt->pts*/){
904 pkt->dts -= 1LL<<st->pts_wrap_bits;
907 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
908 // we take the conservative approach and discard both
909 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
910 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
911 av_log(s, AV_LOG_WARNING, "invalid dts/pts combination\n");
912 pkt->dts= pkt->pts= AV_NOPTS_VALUE;
915 if (pkt->duration == 0) {
916 compute_frame_duration(&num, &den, st, pc, pkt);
918 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
920 if(pkt->duration != 0 && s->packet_buffer)
921 update_initial_durations(s, st, pkt);
925 /* correct timestamps with byte offset if demuxers only have timestamps
926 on packet boundaries */
927 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
928 /* this will estimate bitrate based on this frame's duration and size */
929 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
930 if(pkt->pts != AV_NOPTS_VALUE)
932 if(pkt->dts != AV_NOPTS_VALUE)
936 if (pc && pc->dts_sync_point >= 0) {
937 // we have synchronization info from the parser
938 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
940 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
941 if (pkt->dts != AV_NOPTS_VALUE) {
942 // got DTS from the stream, update reference timestamp
943 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
944 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
945 } else if (st->reference_dts != AV_NOPTS_VALUE) {
946 // compute DTS based on reference timestamp
947 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
948 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
950 if (pc->dts_sync_point > 0)
951 st->reference_dts = pkt->dts; // new reference
955 /* This may be redundant, but it should not hurt. */
956 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
957 presentation_delayed = 1;
959 // 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);
960 /* interpolate PTS and DTS if they are not present */
961 //We skip H264 currently because delay and has_b_frames are not reliably set
962 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
963 if (presentation_delayed) {
964 /* DTS = decompression timestamp */
965 /* PTS = presentation timestamp */
966 if (pkt->dts == AV_NOPTS_VALUE)
967 pkt->dts = st->last_IP_pts;
968 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
969 if (pkt->dts == AV_NOPTS_VALUE)
970 pkt->dts = st->cur_dts;
972 /* this is tricky: the dts must be incremented by the duration
973 of the frame we are displaying, i.e. the last I- or P-frame */
974 if (st->last_IP_duration == 0)
975 st->last_IP_duration = pkt->duration;
976 if(pkt->dts != AV_NOPTS_VALUE)
977 st->cur_dts = pkt->dts + st->last_IP_duration;
978 st->last_IP_duration = pkt->duration;
979 st->last_IP_pts= pkt->pts;
980 /* cannot compute PTS if not present (we can compute it only
981 by knowing the future */
982 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
983 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
984 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
985 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
986 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
987 pkt->pts += pkt->duration;
988 // 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);
992 /* presentation is not delayed : PTS and DTS are the same */
993 if(pkt->pts == AV_NOPTS_VALUE)
995 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
996 if(pkt->pts == AV_NOPTS_VALUE)
997 pkt->pts = st->cur_dts;
999 if(pkt->pts != AV_NOPTS_VALUE)
1000 st->cur_dts = pkt->pts + pkt->duration;
1004 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1005 st->pts_buffer[0]= pkt->pts;
1006 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1007 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1008 if(pkt->dts == AV_NOPTS_VALUE)
1009 pkt->dts= st->pts_buffer[0];
1010 if(st->codec->codec_id == CODEC_ID_H264){ //we skiped it above so we try here
1011 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1013 if(pkt->dts > st->cur_dts)
1014 st->cur_dts = pkt->dts;
1017 // 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);
1020 if(is_intra_only(st->codec))
1021 pkt->flags |= AV_PKT_FLAG_KEY;
1024 /* keyframe computation */
1025 if (pc->key_frame == 1)
1026 pkt->flags |= AV_PKT_FLAG_KEY;
1027 else if (pc->key_frame == -1 && pc->pict_type == FF_I_TYPE)
1028 pkt->flags |= AV_PKT_FLAG_KEY;
1031 pkt->convergence_duration = pc->convergence_duration;
1035 static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1040 av_init_packet(pkt);
1043 /* select current input stream component */
1046 if (!st->need_parsing || !st->parser) {
1047 /* no parsing needed: we just output the packet as is */
1048 /* raw data support */
1049 *pkt = st->cur_pkt; st->cur_pkt.data= NULL;
1050 compute_pkt_fields(s, st, NULL, pkt);
1052 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1053 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1054 ff_reduce_index(s, st->index);
1055 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1058 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1059 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1060 st->cur_ptr, st->cur_len,
1061 st->cur_pkt.pts, st->cur_pkt.dts,
1063 st->cur_pkt.pts = AV_NOPTS_VALUE;
1064 st->cur_pkt.dts = AV_NOPTS_VALUE;
1065 /* increment read pointer */
1069 /* return packet if any */
1073 pkt->stream_index = st->index;
1074 pkt->pts = st->parser->pts;
1075 pkt->dts = st->parser->dts;
1076 pkt->pos = st->parser->pos;
1077 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1079 pkt->destruct= st->cur_pkt.destruct;
1080 st->cur_pkt.destruct=
1081 st->cur_pkt.data = NULL;
1082 assert(st->cur_len == 0);
1084 pkt->destruct = NULL;
1086 compute_pkt_fields(s, st, st->parser, pkt);
1088 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1089 ff_reduce_index(s, st->index);
1090 av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
1091 0, 0, AVINDEX_KEYFRAME);
1098 av_free_packet(&st->cur_pkt);
1103 /* read next packet */
1104 ret = av_read_packet(s, &cur_pkt);
1106 if (ret == AVERROR(EAGAIN))
1108 /* return the last frames, if any */
1109 for(i = 0; i < s->nb_streams; i++) {
1111 if (st->parser && st->need_parsing) {
1112 av_parser_parse2(st->parser, st->codec,
1113 &pkt->data, &pkt->size,
1115 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1121 /* no more packets: really terminate parsing */
1124 st = s->streams[cur_pkt.stream_index];
1125 st->cur_pkt= cur_pkt;
1127 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1128 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1129 st->cur_pkt.pts < st->cur_pkt.dts){
1130 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1131 st->cur_pkt.stream_index,
1135 // av_free_packet(&st->cur_pkt);
1139 if(s->debug & FF_FDEBUG_TS)
1140 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1141 st->cur_pkt.stream_index,
1145 st->cur_pkt.duration,
1149 st->cur_ptr = st->cur_pkt.data;
1150 st->cur_len = st->cur_pkt.size;
1151 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1152 st->parser = av_parser_init(st->codec->codec_id);
1154 /* no parser available: just output the raw packets */
1155 st->need_parsing = AVSTREAM_PARSE_NONE;
1156 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1157 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1158 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1159 st->parser->flags |= PARSER_FLAG_ONCE;
1161 if(st->parser && (s->iformat->flags & AVFMT_GENERIC_INDEX)){
1162 st->parser->next_frame_offset=
1163 st->parser->cur_offset= st->cur_pkt.pos;
1168 if(s->debug & FF_FDEBUG_TS)
1169 av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1180 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1184 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
1187 pktl = s->packet_buffer;
1189 AVPacket *next_pkt= &pktl->pkt;
1191 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
1192 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1193 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
1194 if( pktl->pkt.stream_index == next_pkt->stream_index
1195 && (0 > av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)))
1196 && av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1197 next_pkt->pts= pktl->pkt.dts;
1201 pktl = s->packet_buffer;
1204 if( next_pkt->pts != AV_NOPTS_VALUE
1205 || next_pkt->dts == AV_NOPTS_VALUE
1207 /* read packet from packet buffer, if there is data */
1209 s->packet_buffer = pktl->next;
1215 int ret= av_read_frame_internal(s, pkt);
1217 if(pktl && ret != AVERROR(EAGAIN)){
1224 if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1225 &s->packet_buffer_end)) < 0)
1226 return AVERROR(ENOMEM);
1228 assert(!s->packet_buffer);
1229 return av_read_frame_internal(s, pkt);
1234 /* XXX: suppress the packet queue */
1235 static void flush_packet_queue(AVFormatContext *s)
1240 pktl = s->packet_buffer;
1243 s->packet_buffer = pktl->next;
1244 av_free_packet(&pktl->pkt);
1247 while(s->raw_packet_buffer){
1248 pktl = s->raw_packet_buffer;
1249 s->raw_packet_buffer = pktl->next;
1250 av_free_packet(&pktl->pkt);
1253 s->packet_buffer_end=
1254 s->raw_packet_buffer_end= NULL;
1255 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1258 /*******************************************************/
1261 int av_find_default_stream_index(AVFormatContext *s)
1263 int first_audio_index = -1;
1267 if (s->nb_streams <= 0)
1269 for(i = 0; i < s->nb_streams; i++) {
1271 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1274 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1275 first_audio_index = i;
1277 return first_audio_index >= 0 ? first_audio_index : 0;
1281 * Flush the frame reader.
1283 void ff_read_frame_flush(AVFormatContext *s)
1288 flush_packet_queue(s);
1292 /* for each stream, reset read state */
1293 for(i = 0; i < s->nb_streams; i++) {
1297 av_parser_close(st->parser);
1299 av_free_packet(&st->cur_pkt);
1301 st->last_IP_pts = AV_NOPTS_VALUE;
1302 st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1303 st->reference_dts = AV_NOPTS_VALUE;
1308 st->probe_packets = MAX_PROBE_PACKETS;
1310 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1311 st->pts_buffer[j]= AV_NOPTS_VALUE;
1315 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
1318 for(i = 0; i < s->nb_streams; i++) {
1319 AVStream *st = s->streams[i];
1321 st->cur_dts = av_rescale(timestamp,
1322 st->time_base.den * (int64_t)ref_st->time_base.num,
1323 st->time_base.num * (int64_t)ref_st->time_base.den);
1327 void ff_reduce_index(AVFormatContext *s, int stream_index)
1329 AVStream *st= s->streams[stream_index];
1330 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1332 if((unsigned)st->nb_index_entries >= max_entries){
1334 for(i=0; 2*i<st->nb_index_entries; i++)
1335 st->index_entries[i]= st->index_entries[2*i];
1336 st->nb_index_entries= i;
1340 int av_add_index_entry(AVStream *st,
1341 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1343 AVIndexEntry *entries, *ie;
1346 if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1349 entries = av_fast_realloc(st->index_entries,
1350 &st->index_entries_allocated_size,
1351 (st->nb_index_entries + 1) *
1352 sizeof(AVIndexEntry));
1356 st->index_entries= entries;
1358 index= av_index_search_timestamp(st, timestamp, AVSEEK_FLAG_ANY);
1361 index= st->nb_index_entries++;
1362 ie= &entries[index];
1363 assert(index==0 || ie[-1].timestamp < timestamp);
1365 ie= &entries[index];
1366 if(ie->timestamp != timestamp){
1367 if(ie->timestamp <= timestamp)
1369 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(st->nb_index_entries - index));
1370 st->nb_index_entries++;
1371 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1372 distance= ie->min_distance;
1376 ie->timestamp = timestamp;
1377 ie->min_distance= distance;
1384 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1387 AVIndexEntry *entries= st->index_entries;
1388 int nb_entries= st->nb_index_entries;
1395 //optimize appending index entries at the end
1396 if(b && entries[b-1].timestamp < wanted_timestamp)
1401 timestamp = entries[m].timestamp;
1402 if(timestamp >= wanted_timestamp)
1404 if(timestamp <= wanted_timestamp)
1407 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1409 if(!(flags & AVSEEK_FLAG_ANY)){
1410 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1411 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1422 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1423 AVInputFormat *avif= s->iformat;
1424 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1425 int64_t ts_min, ts_max, ts;
1430 if (stream_index < 0)
1434 av_log(s, AV_LOG_DEBUG, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1438 ts_min= AV_NOPTS_VALUE;
1439 pos_limit= -1; //gcc falsely says it may be uninitialized
1441 st= s->streams[stream_index];
1442 if(st->index_entries){
1445 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()
1446 index= FFMAX(index, 0);
1447 e= &st->index_entries[index];
1449 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1451 ts_min= e->timestamp;
1453 av_log(s, AV_LOG_DEBUG, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1460 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1461 assert(index < st->nb_index_entries);
1463 e= &st->index_entries[index];
1464 assert(e->timestamp >= target_ts);
1466 ts_max= e->timestamp;
1467 pos_limit= pos_max - e->min_distance;
1469 av_log(s, AV_LOG_DEBUG, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1470 pos_max,pos_limit, ts_max);
1475 pos= av_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1480 if ((ret = url_fseek(s->pb, pos, SEEK_SET)) < 0)
1483 av_update_cur_dts(s, st, ts);
1488 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 )){
1490 int64_t start_pos, filesize;
1494 av_log(s, AV_LOG_DEBUG, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1497 if(ts_min == AV_NOPTS_VALUE){
1498 pos_min = s->data_offset;
1499 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1500 if (ts_min == AV_NOPTS_VALUE)
1504 if(ts_max == AV_NOPTS_VALUE){
1506 filesize = url_fsize(s->pb);
1507 pos_max = filesize - 1;
1510 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1512 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1513 if (ts_max == AV_NOPTS_VALUE)
1517 int64_t tmp_pos= pos_max + 1;
1518 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1519 if(tmp_ts == AV_NOPTS_VALUE)
1523 if(tmp_pos >= filesize)
1529 if(ts_min > ts_max){
1531 }else if(ts_min == ts_max){
1536 while (pos_min < pos_limit) {
1538 av_log(s, AV_LOG_DEBUG, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1542 assert(pos_limit <= pos_max);
1545 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1546 // interpolate position (better than dichotomy)
1547 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1548 + pos_min - approximate_keyframe_distance;
1549 }else if(no_change==1){
1550 // bisection, if interpolation failed to change min or max pos last time
1551 pos = (pos_min + pos_limit)>>1;
1553 /* linear search if bisection failed, can only happen if there
1554 are very few or no keyframes between min/max */
1559 else if(pos > pos_limit)
1563 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1569 av_log(s, AV_LOG_DEBUG, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1570 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit,
1571 start_pos, no_change);
1573 if(ts == AV_NOPTS_VALUE){
1574 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1577 assert(ts != AV_NOPTS_VALUE);
1578 if (target_ts <= ts) {
1579 pos_limit = start_pos - 1;
1583 if (target_ts >= ts) {
1589 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1590 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1593 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1595 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1596 av_log(s, AV_LOG_DEBUG, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1597 pos, ts_min, target_ts, ts_max);
1603 static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1604 int64_t pos_min, pos_max;
1608 if (stream_index < 0)
1611 st= s->streams[stream_index];
1614 pos_min = s->data_offset;
1615 pos_max = url_fsize(s->pb) - 1;
1617 if (pos < pos_min) pos= pos_min;
1618 else if(pos > pos_max) pos= pos_max;
1620 url_fseek(s->pb, pos, SEEK_SET);
1623 av_update_cur_dts(s, st, ts);
1628 static int av_seek_frame_generic(AVFormatContext *s,
1629 int stream_index, int64_t timestamp, int flags)
1636 st = s->streams[stream_index];
1638 index = av_index_search_timestamp(st, timestamp, flags);
1640 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1643 if(index < 0 || index==st->nb_index_entries-1){
1647 if(st->nb_index_entries){
1648 assert(st->index_entries);
1649 ie= &st->index_entries[st->nb_index_entries-1];
1650 if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
1652 av_update_cur_dts(s, st, ie->timestamp);
1654 if ((ret = url_fseek(s->pb, s->data_offset, SEEK_SET)) < 0)
1660 ret = av_read_frame(s, &pkt);
1661 }while(ret == AVERROR(EAGAIN));
1664 av_free_packet(&pkt);
1665 if(stream_index == pkt.stream_index){
1666 if((pkt.flags & AV_PKT_FLAG_KEY) && pkt.dts > timestamp)
1670 index = av_index_search_timestamp(st, timestamp, flags);
1675 ff_read_frame_flush(s);
1676 if (s->iformat->read_seek){
1677 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1680 ie = &st->index_entries[index];
1681 if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
1683 av_update_cur_dts(s, st, ie->timestamp);
1688 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1693 ff_read_frame_flush(s);
1695 if(flags & AVSEEK_FLAG_BYTE)
1696 return av_seek_frame_byte(s, stream_index, timestamp, flags);
1698 if(stream_index < 0){
1699 stream_index= av_find_default_stream_index(s);
1700 if(stream_index < 0)
1703 st= s->streams[stream_index];
1704 /* timestamp for default must be expressed in AV_TIME_BASE units */
1705 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1708 /* first, we try the format specific seek */
1709 if (s->iformat->read_seek)
1710 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1717 if(s->iformat->read_timestamp)
1718 return av_seek_frame_binary(s, stream_index, timestamp, flags);
1720 return av_seek_frame_generic(s, stream_index, timestamp, flags);
1723 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1725 if(min_ts > ts || max_ts < ts)
1728 ff_read_frame_flush(s);
1730 if (s->iformat->read_seek2)
1731 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1733 if(s->iformat->read_timestamp){
1734 //try to seek via read_timestamp()
1737 //Fallback to old API if new is not implemented but old is
1738 //Note the old has somewat different sematics
1739 if(s->iformat->read_seek || 1)
1740 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1742 // try some generic seek like av_seek_frame_generic() but with new ts semantics
1745 /*******************************************************/
1748 * Returns TRUE if the stream has accurate duration in any stream.
1750 * @return TRUE if the stream has accurate duration for at least one component.
1752 static int av_has_duration(AVFormatContext *ic)
1757 for(i = 0;i < ic->nb_streams; i++) {
1758 st = ic->streams[i];
1759 if (st->duration != AV_NOPTS_VALUE)
1766 * Estimate the stream timings from the one of each components.
1768 * Also computes the global bitrate if possible.
1770 static void av_update_stream_timings(AVFormatContext *ic)
1772 int64_t start_time, start_time1, end_time, end_time1;
1773 int64_t duration, duration1;
1777 start_time = INT64_MAX;
1778 end_time = INT64_MIN;
1779 duration = INT64_MIN;
1780 for(i = 0;i < ic->nb_streams; i++) {
1781 st = ic->streams[i];
1782 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1783 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1784 if (start_time1 < start_time)
1785 start_time = start_time1;
1786 if (st->duration != AV_NOPTS_VALUE) {
1787 end_time1 = start_time1
1788 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1789 if (end_time1 > end_time)
1790 end_time = end_time1;
1793 if (st->duration != AV_NOPTS_VALUE) {
1794 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1795 if (duration1 > duration)
1796 duration = duration1;
1799 if (start_time != INT64_MAX) {
1800 ic->start_time = start_time;
1801 if (end_time != INT64_MIN) {
1802 if (end_time - start_time > duration)
1803 duration = end_time - start_time;
1806 if (duration != INT64_MIN) {
1807 ic->duration = duration;
1808 if (ic->file_size > 0) {
1809 /* compute the bitrate */
1810 ic->bit_rate = (double)ic->file_size * 8.0 * AV_TIME_BASE /
1811 (double)ic->duration;
1816 static void fill_all_stream_timings(AVFormatContext *ic)
1821 av_update_stream_timings(ic);
1822 for(i = 0;i < ic->nb_streams; i++) {
1823 st = ic->streams[i];
1824 if (st->start_time == AV_NOPTS_VALUE) {
1825 if(ic->start_time != AV_NOPTS_VALUE)
1826 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
1827 if(ic->duration != AV_NOPTS_VALUE)
1828 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
1833 static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
1835 int64_t filesize, duration;
1839 /* if bit_rate is already set, we believe it */
1840 if (ic->bit_rate == 0) {
1842 for(i=0;i<ic->nb_streams;i++) {
1843 st = ic->streams[i];
1844 bit_rate += st->codec->bit_rate;
1846 ic->bit_rate = bit_rate;
1849 /* if duration is already set, we believe it */
1850 if (ic->duration == AV_NOPTS_VALUE &&
1851 ic->bit_rate != 0 &&
1852 ic->file_size != 0) {
1853 filesize = ic->file_size;
1855 for(i = 0; i < ic->nb_streams; i++) {
1856 st = ic->streams[i];
1857 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
1858 if (st->duration == AV_NOPTS_VALUE)
1859 st->duration = duration;
1865 #define DURATION_MAX_READ_SIZE 250000
1866 #define DURATION_MAX_RETRY 3
1868 /* only usable for MPEG-PS streams */
1869 static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
1871 AVPacket pkt1, *pkt = &pkt1;
1873 int read_size, i, ret;
1874 int64_t end_time, start_time[MAX_STREAMS];
1875 int64_t filesize, offset, duration;
1880 /* flush packet queue */
1881 flush_packet_queue(ic);
1883 for(i=0;i<ic->nb_streams;i++) {
1884 st = ic->streams[i];
1885 if(st->start_time != AV_NOPTS_VALUE){
1886 start_time[i]= st->start_time;
1887 }else if(st->first_dts != AV_NOPTS_VALUE){
1888 start_time[i]= st->first_dts;
1890 av_log(st->codec, AV_LOG_WARNING, "start time is not set in av_estimate_timings_from_pts\n");
1893 av_parser_close(st->parser);
1895 av_free_packet(&st->cur_pkt);
1899 /* estimate the end time (duration) */
1900 /* XXX: may need to support wrapping */
1901 filesize = ic->file_size;
1902 end_time = AV_NOPTS_VALUE;
1904 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
1908 url_fseek(ic->pb, offset, SEEK_SET);
1911 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
1915 ret = av_read_packet(ic, pkt);
1916 }while(ret == AVERROR(EAGAIN));
1919 read_size += pkt->size;
1920 st = ic->streams[pkt->stream_index];
1921 if (pkt->pts != AV_NOPTS_VALUE &&
1922 start_time[pkt->stream_index] != AV_NOPTS_VALUE) {
1923 end_time = pkt->pts;
1924 duration = end_time - start_time[pkt->stream_index];
1926 duration += 1LL<<st->pts_wrap_bits;
1928 if (st->duration == AV_NOPTS_VALUE ||
1929 st->duration < duration)
1930 st->duration = duration;
1933 av_free_packet(pkt);
1935 }while( end_time==AV_NOPTS_VALUE
1936 && filesize > (DURATION_MAX_READ_SIZE<<retry)
1937 && ++retry <= DURATION_MAX_RETRY);
1939 fill_all_stream_timings(ic);
1941 url_fseek(ic->pb, old_offset, SEEK_SET);
1942 for(i=0; i<ic->nb_streams; i++){
1944 st->cur_dts= st->first_dts;
1945 st->last_IP_pts = AV_NOPTS_VALUE;
1949 static void av_estimate_timings(AVFormatContext *ic, int64_t old_offset)
1953 /* get the file size, if possible */
1954 if (ic->iformat->flags & AVFMT_NOFILE) {
1957 file_size = url_fsize(ic->pb);
1961 ic->file_size = file_size;
1963 if ((!strcmp(ic->iformat->name, "mpeg") ||
1964 !strcmp(ic->iformat->name, "mpegts")) &&
1965 file_size && !url_is_streamed(ic->pb)) {
1966 /* get accurate estimate from the PTSes */
1967 av_estimate_timings_from_pts(ic, old_offset);
1968 } else if (av_has_duration(ic)) {
1969 /* at least one component has timings - we use them for all
1971 fill_all_stream_timings(ic);
1973 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
1974 /* less precise: use bitrate info */
1975 av_estimate_timings_from_bit_rate(ic);
1977 av_update_stream_timings(ic);
1983 for(i = 0;i < ic->nb_streams; i++) {
1984 st = ic->streams[i];
1985 printf("%d: start_time: %0.3f duration: %0.3f\n",
1986 i, (double)st->start_time / AV_TIME_BASE,
1987 (double)st->duration / AV_TIME_BASE);
1989 printf("stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
1990 (double)ic->start_time / AV_TIME_BASE,
1991 (double)ic->duration / AV_TIME_BASE,
1992 ic->bit_rate / 1000);
1997 static int has_codec_parameters(AVCodecContext *enc)
2000 switch(enc->codec_type) {
2001 case AVMEDIA_TYPE_AUDIO:
2002 val = enc->sample_rate && enc->channels && enc->sample_fmt != SAMPLE_FMT_NONE;
2003 if(!enc->frame_size &&
2004 (enc->codec_id == CODEC_ID_VORBIS ||
2005 enc->codec_id == CODEC_ID_AAC ||
2006 enc->codec_id == CODEC_ID_MP1 ||
2007 enc->codec_id == CODEC_ID_MP2 ||
2008 enc->codec_id == CODEC_ID_MP3 ||
2009 enc->codec_id == CODEC_ID_SPEEX))
2012 case AVMEDIA_TYPE_VIDEO:
2013 val = enc->width && enc->pix_fmt != PIX_FMT_NONE;
2019 return enc->codec_id != CODEC_ID_NONE && val != 0;
2022 static int try_decode_frame(AVStream *st, AVPacket *avpkt)
2026 int got_picture, data_size, ret=0;
2029 if(!st->codec->codec){
2030 codec = avcodec_find_decoder(st->codec->codec_id);
2033 ret = avcodec_open(st->codec, codec);
2038 if(!has_codec_parameters(st->codec)){
2039 switch(st->codec->codec_type) {
2040 case AVMEDIA_TYPE_VIDEO:
2041 avcodec_get_frame_defaults(&picture);
2042 ret = avcodec_decode_video2(st->codec, &picture,
2043 &got_picture, avpkt);
2045 case AVMEDIA_TYPE_AUDIO:
2046 data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
2047 samples = av_malloc(data_size);
2050 ret = avcodec_decode_audio3(st->codec, samples,
2062 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2064 while (tags->id != CODEC_ID_NONE) {
2072 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2075 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2076 if(tag == tags[i].tag)
2079 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2080 if (ff_toupper4(tag) == ff_toupper4(tags[i].tag))
2083 return CODEC_ID_NONE;
2086 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2089 for(i=0; tags && tags[i]; i++){
2090 int tag= ff_codec_get_tag(tags[i], id);
2096 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2099 for(i=0; tags && tags[i]; i++){
2100 enum CodecID id= ff_codec_get_id(tags[i], tag);
2101 if(id!=CODEC_ID_NONE) return id;
2103 return CODEC_ID_NONE;
2106 static void compute_chapters_end(AVFormatContext *s)
2110 for (i=0; i+1<s->nb_chapters; i++)
2111 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2112 assert(s->chapters[i]->start <= s->chapters[i+1]->start);
2113 assert(!av_cmp_q(s->chapters[i]->time_base, s->chapters[i+1]->time_base));
2114 s->chapters[i]->end = s->chapters[i+1]->start;
2117 if (s->nb_chapters && s->chapters[i]->end == AV_NOPTS_VALUE) {
2118 assert(s->start_time != AV_NOPTS_VALUE);
2119 assert(s->duration > 0);
2120 s->chapters[i]->end = av_rescale_q(s->start_time + s->duration,
2122 s->chapters[i]->time_base);
2126 #define MAX_STD_TIMEBASES (60*12+5)
2127 static int get_std_framerate(int i){
2128 if(i<60*12) return i*1001;
2129 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2133 * Is the time base unreliable.
2134 * This is a heuristic to balance between quick acceptance of the values in
2135 * the headers vs. some extra checks.
2136 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2137 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2138 * And there are "variable" fps files this needs to detect as well.
2140 static int tb_unreliable(AVCodecContext *c){
2141 if( c->time_base.den >= 101L*c->time_base.num
2142 || c->time_base.den < 5L*c->time_base.num
2143 /* || c->codec_tag == AV_RL32("DIVX")
2144 || c->codec_tag == AV_RL32("XVID")*/
2145 || c->codec_id == CODEC_ID_MPEG2VIDEO
2146 || c->codec_id == CODEC_ID_H264
2152 int av_find_stream_info(AVFormatContext *ic)
2154 int i, count, ret, read_size, j;
2156 AVPacket pkt1, *pkt;
2157 int64_t last_dts[MAX_STREAMS];
2158 int64_t duration_gcd[MAX_STREAMS]={0};
2159 int duration_count[MAX_STREAMS]={0};
2160 double (*duration_error)[MAX_STD_TIMEBASES];
2161 int64_t old_offset = url_ftell(ic->pb);
2162 int64_t codec_info_duration[MAX_STREAMS]={0};
2164 duration_error = av_mallocz(MAX_STREAMS * sizeof(*duration_error));
2165 if (!duration_error) return AVERROR(ENOMEM);
2167 for(i=0;i<ic->nb_streams;i++) {
2168 st = ic->streams[i];
2169 if (st->codec->codec_id == CODEC_ID_AAC) {
2170 st->codec->sample_rate = 0;
2171 st->codec->frame_size = 0;
2172 st->codec->channels = 0;
2174 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
2175 /* if(!st->time_base.num)
2177 if(!st->codec->time_base.num)
2178 st->codec->time_base= st->time_base;
2180 //only for the split stuff
2181 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2182 st->parser = av_parser_init(st->codec->codec_id);
2183 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2184 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2187 assert(!st->codec->codec);
2188 //try to just open decoders, in case this is enough to get parameters
2189 if(!has_codec_parameters(st->codec)){
2190 AVCodec *codec = avcodec_find_decoder(st->codec->codec_id);
2192 avcodec_open(st->codec, codec);
2196 for(i=0;i<MAX_STREAMS;i++){
2197 last_dts[i]= AV_NOPTS_VALUE;
2203 if(url_interrupt_cb()){
2204 ret= AVERROR(EINTR);
2205 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2209 /* check if one codec still needs to be handled */
2210 for(i=0;i<ic->nb_streams;i++) {
2211 st = ic->streams[i];
2212 if (!has_codec_parameters(st->codec))
2214 /* variable fps and no guess at the real fps */
2215 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2216 && duration_count[i]<20 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2218 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2220 if(st->first_dts == AV_NOPTS_VALUE)
2223 if (i == ic->nb_streams) {
2224 /* NOTE: if the format has no header, then we need to read
2225 some packets to get most of the streams, so we cannot
2227 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2228 /* if we found the info for all the codecs, we can stop */
2230 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2234 /* we did not get all the codec info, but we read too much data */
2235 if (read_size >= ic->probesize) {
2237 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2241 /* NOTE: a new stream can be added there if no header in file
2242 (AVFMTCTX_NOHEADER) */
2243 ret = av_read_frame_internal(ic, &pkt1);
2244 if(ret == AVERROR(EAGAIN))
2248 ret = -1; /* we could not have all the codec parameters before EOF */
2249 for(i=0;i<ic->nb_streams;i++) {
2250 st = ic->streams[i];
2251 if (!has_codec_parameters(st->codec)){
2253 avcodec_string(buf, sizeof(buf), st->codec, 0);
2254 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2262 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2263 if(av_dup_packet(pkt) < 0) {
2264 av_free(duration_error);
2265 return AVERROR(ENOMEM);
2268 read_size += pkt->size;
2270 st = ic->streams[pkt->stream_index];
2271 if(st->codec_info_nb_frames>1) {
2272 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){
2273 av_log(ic, AV_LOG_WARNING, "max_analyze_duration reached\n");
2276 codec_info_duration[st->index] += pkt->duration;
2278 st->codec_info_nb_frames++;
2281 int index= pkt->stream_index;
2282 int64_t last= last_dts[index];
2283 int64_t duration= pkt->dts - last;
2285 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
2286 double dur= duration * av_q2d(st->time_base);
2288 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2289 // av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
2290 if(duration_count[index] < 2)
2291 memset(duration_error[index], 0, sizeof(*duration_error));
2292 for(i=1; i<MAX_STD_TIMEBASES; i++){
2293 int framerate= get_std_framerate(i);
2294 int ticks= lrintf(dur*framerate/(1001*12));
2295 double error= dur - ticks*1001*12/(double)framerate;
2296 duration_error[index][i] += error*error;
2298 duration_count[index]++;
2299 // ignore the first 4 values, they might have some random jitter
2300 if (duration_count[index] > 3)
2301 duration_gcd[index] = av_gcd(duration_gcd[index], duration);
2303 if(last == AV_NOPTS_VALUE || duration_count[index]<=1)
2304 last_dts[pkt->stream_index]= pkt->dts;
2306 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2307 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2309 st->codec->extradata_size= i;
2310 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2311 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2312 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2316 /* if still no information, we try to open the codec and to
2317 decompress the frame. We try to avoid that in most cases as
2318 it takes longer and uses more memory. For MPEG-4, we need to
2319 decompress for QuickTime. */
2320 if (!has_codec_parameters(st->codec))
2321 try_decode_frame(st, pkt);
2326 // close codecs which were opened in try_decode_frame()
2327 for(i=0;i<ic->nb_streams;i++) {
2328 st = ic->streams[i];
2329 if(st->codec->codec)
2330 avcodec_close(st->codec);
2332 for(i=0;i<ic->nb_streams;i++) {
2333 st = ic->streams[i];
2334 if(st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && codec_info_duration[i])
2335 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2336 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2337 codec_info_duration[i] *(int64_t)st->time_base.num, 60000);
2338 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2339 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample)
2340 st->codec->codec_tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2342 // the check for tb_unreliable() is not completely correct, since this is not about handling
2343 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2344 // ipmovie.c produces.
2345 if (tb_unreliable(st->codec) && duration_count[i] > 15 && duration_gcd[i] > 1 && !st->r_frame_rate.num)
2346 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);
2347 if(duration_count[i] && !st->r_frame_rate.num
2348 && tb_unreliable(st->codec) /*&&
2349 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2350 st->time_base.num*duration_sum[i]/duration_count[i]*101LL > st->time_base.den*/){
2352 double best_error= 2*av_q2d(st->time_base);
2353 best_error= best_error*best_error*duration_count[i]*1000*12*30;
2355 for(j=1; j<MAX_STD_TIMEBASES; j++){
2356 double error= duration_error[i][j] * get_std_framerate(j);
2357 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2358 // av_log(NULL, AV_LOG_ERROR, "%f %f\n", get_std_framerate(j) / 12.0/1001, error);
2359 if(error < best_error){
2361 num = get_std_framerate(j);
2364 // do not increase frame rate by more than 1 % in order to match a standard rate.
2365 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2366 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2369 if (!st->r_frame_rate.num){
2370 if( st->codec->time_base.den * (int64_t)st->time_base.num
2371 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2372 st->r_frame_rate.num = st->codec->time_base.den;
2373 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2375 st->r_frame_rate.num = st->time_base.den;
2376 st->r_frame_rate.den = st->time_base.num;
2379 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2380 if(!st->codec->bits_per_coded_sample)
2381 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2385 av_estimate_timings(ic, old_offset);
2387 compute_chapters_end(ic);
2390 /* correct DTS for B-frame streams with no timestamps */
2391 for(i=0;i<ic->nb_streams;i++) {
2392 st = ic->streams[i];
2393 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2395 ppktl = &ic->packet_buffer;
2397 if(ppkt1->stream_index != i)
2399 if(ppkt1->pkt->dts < 0)
2401 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2403 ppkt1->pkt->dts -= delta;
2408 st->cur_dts -= delta;
2414 av_free(duration_error);
2419 /*******************************************************/
2421 int av_read_play(AVFormatContext *s)
2423 if (s->iformat->read_play)
2424 return s->iformat->read_play(s);
2426 return av_url_read_fpause(s->pb, 0);
2427 return AVERROR(ENOSYS);
2430 int av_read_pause(AVFormatContext *s)
2432 if (s->iformat->read_pause)
2433 return s->iformat->read_pause(s);
2435 return av_url_read_fpause(s->pb, 1);
2436 return AVERROR(ENOSYS);
2439 void av_close_input_stream(AVFormatContext *s)
2444 if (s->iformat->read_close)
2445 s->iformat->read_close(s);
2446 for(i=0;i<s->nb_streams;i++) {
2447 /* free all data in a stream component */
2450 av_parser_close(st->parser);
2451 av_free_packet(&st->cur_pkt);
2453 av_metadata_free(&st->metadata);
2454 av_free(st->index_entries);
2455 av_free(st->codec->extradata);
2457 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2458 av_free(st->filename);
2460 av_free(st->priv_data);
2463 for(i=s->nb_programs-1; i>=0; i--) {
2464 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2465 av_freep(&s->programs[i]->provider_name);
2466 av_freep(&s->programs[i]->name);
2468 av_metadata_free(&s->programs[i]->metadata);
2469 av_freep(&s->programs[i]->stream_index);
2470 av_freep(&s->programs[i]);
2472 av_freep(&s->programs);
2473 flush_packet_queue(s);
2474 av_freep(&s->priv_data);
2475 while(s->nb_chapters--) {
2476 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2477 av_free(s->chapters[s->nb_chapters]->title);
2479 av_metadata_free(&s->chapters[s->nb_chapters]->metadata);
2480 av_free(s->chapters[s->nb_chapters]);
2482 av_freep(&s->chapters);
2483 av_metadata_free(&s->metadata);
2487 void av_close_input_file(AVFormatContext *s)
2489 ByteIOContext *pb = s->iformat->flags & AVFMT_NOFILE ? NULL : s->pb;
2490 av_close_input_stream(s);
2495 AVStream *av_new_stream(AVFormatContext *s, int id)
2500 if (s->nb_streams >= MAX_STREAMS){
2501 av_log(s, AV_LOG_ERROR, "Too many streams\n");
2505 st = av_mallocz(sizeof(AVStream));
2509 st->codec= avcodec_alloc_context();
2511 /* no default bitrate if decoding */
2512 st->codec->bit_rate = 0;
2514 st->index = s->nb_streams;
2516 st->start_time = AV_NOPTS_VALUE;
2517 st->duration = AV_NOPTS_VALUE;
2518 /* we set the current DTS to 0 so that formats without any timestamps
2519 but durations get some timestamps, formats with some unknown
2520 timestamps have their first few packets buffered and the
2521 timestamps corrected before they are returned to the user */
2523 st->first_dts = AV_NOPTS_VALUE;
2524 st->probe_packets = MAX_PROBE_PACKETS;
2526 /* default pts setting is MPEG-like */
2527 av_set_pts_info(st, 33, 1, 90000);
2528 st->last_IP_pts = AV_NOPTS_VALUE;
2529 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2530 st->pts_buffer[i]= AV_NOPTS_VALUE;
2531 st->reference_dts = AV_NOPTS_VALUE;
2533 st->sample_aspect_ratio = (AVRational){0,1};
2535 s->streams[s->nb_streams++] = st;
2539 AVProgram *av_new_program(AVFormatContext *ac, int id)
2541 AVProgram *program=NULL;
2545 av_log(ac, AV_LOG_DEBUG, "new_program: id=0x%04x\n", id);
2548 for(i=0; i<ac->nb_programs; i++)
2549 if(ac->programs[i]->id == id)
2550 program = ac->programs[i];
2553 program = av_mallocz(sizeof(AVProgram));
2556 dynarray_add(&ac->programs, &ac->nb_programs, program);
2557 program->discard = AVDISCARD_NONE;
2564 AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2566 AVChapter *chapter = NULL;
2569 for(i=0; i<s->nb_chapters; i++)
2570 if(s->chapters[i]->id == id)
2571 chapter = s->chapters[i];
2574 chapter= av_mallocz(sizeof(AVChapter));
2577 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2579 #if LIBAVFORMAT_VERSION_INT < (53<<16)
2580 av_free(chapter->title);
2582 av_metadata_set2(&chapter->metadata, "title", title, 0);
2584 chapter->time_base= time_base;
2585 chapter->start = start;
2591 /************************************************************/
2592 /* output media file */
2594 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2598 if (s->oformat->priv_data_size > 0) {
2599 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2601 return AVERROR(ENOMEM);
2603 s->priv_data = NULL;
2605 if (s->oformat->set_parameters) {
2606 ret = s->oformat->set_parameters(s, ap);
2613 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
2615 const AVCodecTag *avctag;
2617 enum CodecID id = CODEC_ID_NONE;
2618 unsigned int tag = 0;
2621 * Check that tag + id is in the table
2622 * If neither is in the table -> OK
2623 * If tag is in the table with another id -> FAIL
2624 * If id is in the table with another tag -> FAIL unless strict < normal
2626 for (n = 0; s->oformat->codec_tag[n]; n++) {
2627 avctag = s->oformat->codec_tag[n];
2628 while (avctag->id != CODEC_ID_NONE) {
2629 if (ff_toupper4(avctag->tag) == ff_toupper4(st->codec->codec_tag)) {
2631 if (id == st->codec->codec_id)
2634 if (avctag->id == st->codec->codec_id)
2639 if (id != CODEC_ID_NONE)
2641 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
2646 int av_write_header(AVFormatContext *s)
2651 // some sanity checks
2652 if (s->nb_streams == 0) {
2653 av_log(s, AV_LOG_ERROR, "no streams\n");
2654 return AVERROR(EINVAL);
2657 for(i=0;i<s->nb_streams;i++) {
2660 switch (st->codec->codec_type) {
2661 case AVMEDIA_TYPE_AUDIO:
2662 if(st->codec->sample_rate<=0){
2663 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
2664 return AVERROR(EINVAL);
2666 if(!st->codec->block_align)
2667 st->codec->block_align = st->codec->channels *
2668 av_get_bits_per_sample(st->codec->codec_id) >> 3;
2670 case AVMEDIA_TYPE_VIDEO:
2671 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
2672 av_log(s, AV_LOG_ERROR, "time base not set\n");
2673 return AVERROR(EINVAL);
2675 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
2676 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
2677 return AVERROR(EINVAL);
2679 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)){
2680 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
2681 return AVERROR(EINVAL);
2686 if(s->oformat->codec_tag){
2687 if(st->codec->codec_tag && st->codec->codec_id == CODEC_ID_RAWVIDEO && av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id) == 0 && !validate_codec_tag(s, st)){
2688 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
2689 st->codec->codec_tag= 0;
2691 if(st->codec->codec_tag){
2692 if (!validate_codec_tag(s, st)) {
2694 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
2695 av_log(s, AV_LOG_ERROR,
2696 "Tag %s/0x%08x incompatible with output codec '%s'\n",
2697 tagbuf, st->codec->codec_tag, st->codec->codec->name);
2698 return AVERROR_INVALIDDATA;
2701 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
2704 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
2705 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
2706 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
2709 if (!s->priv_data && s->oformat->priv_data_size > 0) {
2710 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2712 return AVERROR(ENOMEM);
2715 #if LIBAVFORMAT_VERSION_MAJOR < 53
2716 ff_metadata_mux_compat(s);
2719 /* set muxer identification string */
2720 if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
2724 if (!(m = av_mallocz(sizeof(AVMetadata))))
2725 return AVERROR(ENOMEM);
2726 av_metadata_set2(&m, "encoder", LIBAVFORMAT_IDENT, 0);
2727 metadata_conv(&m, s->oformat->metadata_conv, NULL);
2728 if ((t = av_metadata_get(m, "", NULL, AV_METADATA_IGNORE_SUFFIX)))
2729 av_metadata_set2(&s->metadata, t->key, t->value, 0);
2730 av_metadata_free(&m);
2733 if(s->oformat->write_header){
2734 ret = s->oformat->write_header(s);
2739 /* init PTS generation */
2740 for(i=0;i<s->nb_streams;i++) {
2741 int64_t den = AV_NOPTS_VALUE;
2744 switch (st->codec->codec_type) {
2745 case AVMEDIA_TYPE_AUDIO:
2746 den = (int64_t)st->time_base.num * st->codec->sample_rate;
2748 case AVMEDIA_TYPE_VIDEO:
2749 den = (int64_t)st->time_base.num * st->codec->time_base.den;
2754 if (den != AV_NOPTS_VALUE) {
2756 return AVERROR_INVALIDDATA;
2757 av_frac_init(&st->pts, 0, 0, den);
2763 //FIXME merge with compute_pkt_fields
2764 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
2765 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
2766 int num, den, frame_size, i;
2768 // 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);
2770 /* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
2773 /* duration field */
2774 if (pkt->duration == 0) {
2775 compute_frame_duration(&num, &den, st, NULL, pkt);
2777 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
2781 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
2784 //XXX/FIXME this is a temporary hack until all encoders output pts
2785 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
2787 // pkt->pts= st->cur_dts;
2788 pkt->pts= st->pts.val;
2791 //calculate dts from pts
2792 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
2793 st->pts_buffer[0]= pkt->pts;
2794 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
2795 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
2796 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
2797 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
2799 pkt->dts= st->pts_buffer[0];
2802 if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
2803 av_log(s, AV_LOG_ERROR,
2804 "st:%d error, non monotone timestamps %"PRId64" >= %"PRId64"\n",
2805 st->index, st->cur_dts, pkt->dts);
2808 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
2809 av_log(s, AV_LOG_ERROR, "st:%d error, pts < dts\n", st->index);
2813 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
2814 st->cur_dts= pkt->dts;
2815 st->pts.val= pkt->dts;
2818 switch (st->codec->codec_type) {
2819 case AVMEDIA_TYPE_AUDIO:
2820 frame_size = get_audio_frame_size(st->codec, pkt->size);
2822 /* HACK/FIXME, we skip the initial 0 size packets as they are most
2823 likely equal to the encoder delay, but it would be better if we
2824 had the real timestamps from the encoder */
2825 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
2826 av_frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
2829 case AVMEDIA_TYPE_VIDEO:
2830 av_frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
2838 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
2840 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
2842 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2845 ret= s->oformat->write_packet(s, pkt);
2847 ret= url_ferror(s->pb);
2851 void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
2852 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
2854 AVPacketList **next_point, *this_pktl;
2856 this_pktl = av_mallocz(sizeof(AVPacketList));
2857 this_pktl->pkt= *pkt;
2858 pkt->destruct= NULL; // do not free original but only the copy
2859 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
2861 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
2862 next_point = &(s->streams[pkt->stream_index]->last_in_packet_buffer->next);
2864 next_point = &s->packet_buffer;
2867 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
2868 while(!compare(s, &(*next_point)->pkt, pkt)){
2869 next_point= &(*next_point)->next;
2873 next_point = &(s->packet_buffer_end->next);
2876 assert(!*next_point);
2878 s->packet_buffer_end= this_pktl;
2881 this_pktl->next= *next_point;
2883 s->streams[pkt->stream_index]->last_in_packet_buffer=
2884 *next_point= this_pktl;
2887 int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2889 AVStream *st = s->streams[ pkt ->stream_index];
2890 AVStream *st2= s->streams[ next->stream_index];
2891 int64_t a= st2->time_base.num * (int64_t)st ->time_base.den;
2892 int64_t b= st ->time_base.num * (int64_t)st2->time_base.den;
2893 return av_rescale_rnd(pkt->dts, b, a, AV_ROUND_DOWN) < next->dts;
2896 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
2902 ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
2905 for(i=0; i < s->nb_streams; i++)
2906 stream_count+= !!s->streams[i]->last_in_packet_buffer;
2908 if(stream_count && (s->nb_streams == stream_count || flush)){
2909 pktl= s->packet_buffer;
2912 s->packet_buffer= pktl->next;
2913 if(!s->packet_buffer)
2914 s->packet_buffer_end= NULL;
2916 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
2917 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
2921 av_init_packet(out);
2927 * Interleaves an AVPacket correctly so it can be muxed.
2928 * @param out the interleaved packet will be output here
2929 * @param in the input packet
2930 * @param flush 1 if no further packets are available as input and all
2931 * remaining packets should be output
2932 * @return 1 if a packet was output, 0 if no packet could be output,
2933 * < 0 if an error occurred
2935 static int av_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
2936 if(s->oformat->interleave_packet)
2937 return s->oformat->interleave_packet(s, out, in, flush);
2939 return av_interleave_packet_per_dts(s, out, in, flush);
2942 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
2943 AVStream *st= s->streams[ pkt->stream_index];
2945 //FIXME/XXX/HACK drop zero sized packets
2946 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
2949 //av_log(NULL, AV_LOG_DEBUG, "av_interleaved_write_frame %d %"PRId64" %"PRId64"\n", pkt->size, pkt->dts, pkt->pts);
2950 if(compute_pkt_fields2(s, st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2953 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2958 int ret= av_interleave_packet(s, &opkt, pkt, 0);
2959 if(ret<=0) //FIXME cleanup needed for ret<0 ?
2962 ret= s->oformat->write_packet(s, &opkt);
2964 av_free_packet(&opkt);
2969 if(url_ferror(s->pb))
2970 return url_ferror(s->pb);
2974 int av_write_trailer(AVFormatContext *s)
2980 ret= av_interleave_packet(s, &pkt, NULL, 1);
2981 if(ret<0) //FIXME cleanup needed for ret<0 ?
2986 ret= s->oformat->write_packet(s, &pkt);
2988 av_free_packet(&pkt);
2992 if(url_ferror(s->pb))
2996 if(s->oformat->write_trailer)
2997 ret = s->oformat->write_trailer(s);
3000 ret=url_ferror(s->pb);
3001 for(i=0;i<s->nb_streams;i++) {
3002 av_freep(&s->streams[i]->priv_data);
3003 av_freep(&s->streams[i]->index_entries);
3005 av_freep(&s->priv_data);
3009 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3012 AVProgram *program=NULL;
3015 if (idx >= ac->nb_streams) {
3016 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3020 for(i=0; i<ac->nb_programs; i++){
3021 if(ac->programs[i]->id != progid)
3023 program = ac->programs[i];
3024 for(j=0; j<program->nb_stream_indexes; j++)
3025 if(program->stream_index[j] == idx)
3028 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3031 program->stream_index = tmp;
3032 program->stream_index[program->nb_stream_indexes++] = idx;
3037 static void print_fps(double d, const char *postfix){
3038 uint64_t v= lrintf(d*100);
3039 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3040 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3041 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3044 static void dump_metadata(void *ctx, AVMetadata *m, const char *indent)
3046 if(m && !(m->count == 1 && av_metadata_get(m, "language", NULL, 0))){
3047 AVMetadataTag *tag=NULL;
3049 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3050 while((tag=av_metadata_get(m, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
3051 if(strcmp("language", tag->key))
3052 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tag->value);
3057 /* "user interface" functions */
3058 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3061 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3062 AVStream *st = ic->streams[i];
3063 int g = av_gcd(st->time_base.num, st->time_base.den);
3064 AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL, 0);
3065 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3066 av_log(NULL, AV_LOG_INFO, " Stream #%d.%d", index, i);
3067 /* the pid is an important information, so we display it */
3068 /* XXX: add a generic system */
3069 if (flags & AVFMT_SHOW_IDS)
3070 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3072 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3073 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3074 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3075 if (st->sample_aspect_ratio.num && // default
3076 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3077 AVRational display_aspect_ratio;
3078 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3079 st->codec->width*st->sample_aspect_ratio.num,
3080 st->codec->height*st->sample_aspect_ratio.den,
3082 av_log(NULL, AV_LOG_INFO, ", PAR %d:%d DAR %d:%d",
3083 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3084 display_aspect_ratio.num, display_aspect_ratio.den);
3086 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3087 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3088 print_fps(av_q2d(st->avg_frame_rate), "fps");
3089 if(st->r_frame_rate.den && st->r_frame_rate.num)
3090 print_fps(av_q2d(st->r_frame_rate), "tbr");
3091 if(st->time_base.den && st->time_base.num)
3092 print_fps(1/av_q2d(st->time_base), "tbn");
3093 if(st->codec->time_base.den && st->codec->time_base.num)
3094 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3096 av_log(NULL, AV_LOG_INFO, "\n");
3097 dump_metadata(NULL, st->metadata, " ");
3100 void dump_format(AVFormatContext *ic,
3106 uint8_t *printed = av_mallocz(ic->nb_streams);
3107 if (ic->nb_streams && !printed)
3110 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3111 is_output ? "Output" : "Input",
3113 is_output ? ic->oformat->name : ic->iformat->name,
3114 is_output ? "to" : "from", url);
3115 dump_metadata(NULL, ic->metadata, " ");
3117 av_log(NULL, AV_LOG_INFO, " Duration: ");
3118 if (ic->duration != AV_NOPTS_VALUE) {
3119 int hours, mins, secs, us;
3120 secs = ic->duration / AV_TIME_BASE;
3121 us = ic->duration % AV_TIME_BASE;
3126 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3127 (100 * us) / AV_TIME_BASE);
3129 av_log(NULL, AV_LOG_INFO, "N/A");
3131 if (ic->start_time != AV_NOPTS_VALUE) {
3133 av_log(NULL, AV_LOG_INFO, ", start: ");
3134 secs = ic->start_time / AV_TIME_BASE;
3135 us = ic->start_time % AV_TIME_BASE;
3136 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3137 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3139 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3141 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3143 av_log(NULL, AV_LOG_INFO, "N/A");
3145 av_log(NULL, AV_LOG_INFO, "\n");
3147 for (i = 0; i < ic->nb_chapters; i++) {
3148 AVChapter *ch = ic->chapters[i];
3149 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3150 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3151 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3153 dump_metadata(NULL, ch->metadata, " ");
3155 if(ic->nb_programs) {
3156 int j, k, total = 0;
3157 for(j=0; j<ic->nb_programs; j++) {
3158 AVMetadataTag *name = av_metadata_get(ic->programs[j]->metadata,
3160 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3161 name ? name->value : "");
3162 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3163 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3164 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3165 printed[ic->programs[j]->stream_index[k]] = 1;
3167 total += ic->programs[j]->nb_stream_indexes;
3169 if (total < ic->nb_streams)
3170 av_log(NULL, AV_LOG_INFO, " No Program\n");
3172 for(i=0;i<ic->nb_streams;i++)
3174 dump_stream_format(ic, i, index, is_output);
3179 #if LIBAVFORMAT_VERSION_MAJOR < 53
3180 int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
3182 return av_parse_video_frame_size(width_ptr, height_ptr, str);
3185 int parse_frame_rate(int *frame_rate_num, int *frame_rate_den, const char *arg)
3187 AVRational frame_rate;
3188 int ret = av_parse_video_frame_rate(&frame_rate, arg);
3189 *frame_rate_num= frame_rate.num;
3190 *frame_rate_den= frame_rate.den;
3195 int64_t av_gettime(void)
3198 gettimeofday(&tv,NULL);
3199 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3202 uint64_t ff_ntp_time(void)
3204 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3207 int64_t parse_date(const char *datestr, int duration)
3213 static const char * const date_fmt[] = {
3217 static const char * const time_fmt[] = {
3227 time_t now = time(0);
3229 len = strlen(datestr);
3231 lastch = datestr[len - 1];
3234 is_utc = (lastch == 'z' || lastch == 'Z');
3236 memset(&dt, 0, sizeof(dt));
3241 if (!strncasecmp(datestr, "now", len))
3242 return (int64_t) now * 1000000;
3244 /* parse the year-month-day part */
3245 for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
3246 q = small_strptime(p, date_fmt[i], &dt);
3252 /* if the year-month-day part is missing, then take the
3253 * current year-month-day time */
3258 dt = *localtime(&now);
3260 dt.tm_hour = dt.tm_min = dt.tm_sec = 0;
3265 if (*p == 'T' || *p == 't' || *p == ' ')
3268 /* parse the hour-minute-second part */
3269 for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
3270 q = small_strptime(p, time_fmt[i], &dt);
3276 /* parse datestr as a duration */
3281 /* parse datestr as HH:MM:SS */
3282 q = small_strptime(p, time_fmt[0], &dt);
3284 /* parse datestr as S+ */
3285 dt.tm_sec = strtol(p, (char **)&q, 10);
3287 /* the parsing didn't succeed */
3294 /* Now we have all the fields that we can get */
3300 t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
3302 dt.tm_isdst = -1; /* unknown */
3312 /* parse the .m... part */
3316 for (val = 0, n = 100000; n >= 1; n /= 10, q++) {
3319 val += n * (*q - '0');
3323 return negative ? -t : t;
3326 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3336 while (*p != '\0' && *p != '=' && *p != '&') {
3337 if ((q - tag) < sizeof(tag) - 1)
3345 while (*p != '&' && *p != '\0') {
3346 if ((q - arg) < arg_size - 1) {
3356 if (!strcmp(tag, tag1))
3365 int av_get_frame_filename(char *buf, int buf_size,
3366 const char *path, int number)
3369 char *q, buf1[20], c;
3370 int nd, len, percentd_found;
3382 while (isdigit(*p)) {
3383 nd = nd * 10 + *p++ - '0';
3386 } while (isdigit(c));
3395 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3397 if ((q - buf + len) > buf_size - 1)
3399 memcpy(q, buf1, len);
3407 if ((q - buf) < buf_size - 1)
3411 if (!percentd_found)
3420 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3424 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3426 for(i=0;i<size;i+=16) {
3433 PRINT(" %02x", buf[i+j]);
3438 for(j=0;j<len;j++) {
3440 if (c < ' ' || c > '~')
3449 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3451 hex_dump_internal(NULL, f, 0, buf, size);
3454 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3456 hex_dump_internal(avcl, NULL, level, buf, size);
3459 //FIXME needs to know the time_base
3460 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
3463 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3464 PRINT("stream #%d:\n", pkt->stream_index);
3465 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3466 PRINT(" duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
3467 /* DTS is _always_ valid after av_read_frame() */
3469 if (pkt->dts == AV_NOPTS_VALUE)
3472 PRINT("%0.3f", (double)pkt->dts / AV_TIME_BASE);
3473 /* PTS may not be known if B-frames are present. */
3475 if (pkt->pts == AV_NOPTS_VALUE)
3478 PRINT("%0.3f", (double)pkt->pts / AV_TIME_BASE);
3480 PRINT(" size=%d\n", pkt->size);
3483 av_hex_dump(f, pkt->data, pkt->size);
3486 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3488 pkt_dump_internal(NULL, f, 0, pkt, dump_payload);
3491 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3493 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload);
3496 #if LIBAVFORMAT_VERSION_MAJOR < 53
3497 attribute_deprecated
3498 void ff_url_split(char *proto, int proto_size,
3499 char *authorization, int authorization_size,
3500 char *hostname, int hostname_size,
3502 char *path, int path_size,
3505 av_url_split(proto, proto_size,
3506 authorization, authorization_size,
3507 hostname, hostname_size,
3514 void av_url_split(char *proto, int proto_size,
3515 char *authorization, int authorization_size,
3516 char *hostname, int hostname_size,
3518 char *path, int path_size,
3521 const char *p, *ls, *at, *col, *brk;
3523 if (port_ptr) *port_ptr = -1;
3524 if (proto_size > 0) proto[0] = 0;
3525 if (authorization_size > 0) authorization[0] = 0;
3526 if (hostname_size > 0) hostname[0] = 0;
3527 if (path_size > 0) path[0] = 0;
3529 /* parse protocol */
3530 if ((p = strchr(url, ':'))) {
3531 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3536 /* no protocol means plain filename */
3537 av_strlcpy(path, url, path_size);
3541 /* separate path from hostname */
3542 ls = strchr(p, '/');
3544 ls = strchr(p, '?');
3546 av_strlcpy(path, ls, path_size);
3548 ls = &p[strlen(p)]; // XXX
3550 /* the rest is hostname, use that to parse auth/port */
3552 /* authorization (user[:pass]@hostname) */
3553 if ((at = strchr(p, '@')) && at < ls) {
3554 av_strlcpy(authorization, p,
3555 FFMIN(authorization_size, at + 1 - p));
3556 p = at + 1; /* skip '@' */
3559 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3561 av_strlcpy(hostname, p + 1,
3562 FFMIN(hostname_size, brk - p));
3563 if (brk[1] == ':' && port_ptr)
3564 *port_ptr = atoi(brk + 2);
3565 } else if ((col = strchr(p, ':')) && col < ls) {
3566 av_strlcpy(hostname, p,
3567 FFMIN(col + 1 - p, hostname_size));
3568 if (port_ptr) *port_ptr = atoi(col + 1);
3570 av_strlcpy(hostname, p,
3571 FFMIN(ls + 1 - p, hostname_size));
3575 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3578 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3581 'C', 'D', 'E', 'F' };
3582 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3585 'c', 'd', 'e', 'f' };
3586 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3588 for(i = 0; i < s; i++) {
3589 buff[i * 2] = hex_table[src[i] >> 4];
3590 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3596 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3597 unsigned int pts_num, unsigned int pts_den)
3599 s->pts_wrap_bits = pts_wrap_bits;
3601 if(av_reduce(&s->time_base.num, &s->time_base.den, pts_num, pts_den, INT_MAX)){
3602 if(s->time_base.num != pts_num)
3603 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/s->time_base.num);
3605 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3607 if(!s->time_base.num || !s->time_base.den)
3608 s->time_base.num= s->time_base.den= 0;
3611 int ff_url_join(char *str, int size, const char *proto,
3612 const char *authorization, const char *hostname,
3613 int port, const char *fmt, ...)
3616 struct addrinfo hints, *ai;
3621 av_strlcatf(str, size, "%s://", proto);
3622 if (authorization && authorization[0])
3623 av_strlcatf(str, size, "%s@", authorization);
3624 #if CONFIG_NETWORK && defined(AF_INET6)
3625 /* Determine if hostname is a numerical IPv6 address,
3626 * properly escape it within [] in that case. */
3627 memset(&hints, 0, sizeof(hints));
3628 hints.ai_flags = AI_NUMERICHOST;
3629 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
3630 if (ai->ai_family == AF_INET6) {
3631 av_strlcat(str, "[", size);
3632 av_strlcat(str, hostname, size);
3633 av_strlcat(str, "]", size);
3635 av_strlcat(str, hostname, size);
3640 /* Not an IPv6 address, just output the plain string. */
3641 av_strlcat(str, hostname, size);
3644 av_strlcatf(str, size, ":%d", port);
3647 int len = strlen(str);
3650 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
3656 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
3657 AVFormatContext *src)
3662 local_pkt.stream_index = dst_stream;
3663 if (pkt->pts != AV_NOPTS_VALUE)
3664 local_pkt.pts = av_rescale_q(pkt->pts,
3665 src->streams[pkt->stream_index]->time_base,
3666 dst->streams[dst_stream]->time_base);
3667 if (pkt->dts != AV_NOPTS_VALUE)
3668 local_pkt.dts = av_rescale_q(pkt->dts,
3669 src->streams[pkt->stream_index]->time_base,
3670 dst->streams[dst_stream]->time_base);
3671 return av_write_frame(dst, &local_pkt);