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 "libavutil/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 FF_API_OLD_METADATA
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);
487 /** size of probe buffer, for guessing file type from file contents */
488 #define PROBE_BUF_MIN 2048
489 #define PROBE_BUF_MAX (1<<20)
491 int ff_probe_input_buffer(ByteIOContext **pb, AVInputFormat **fmt,
492 const char *filename, void *logctx,
493 unsigned int offset, unsigned int max_probe_size)
495 AVProbeData pd = { filename ? filename : "", NULL, -offset };
496 unsigned char *buf = NULL;
497 int ret = 0, probe_size;
499 if (!max_probe_size) {
500 max_probe_size = PROBE_BUF_MAX;
501 } else if (max_probe_size > PROBE_BUF_MAX) {
502 max_probe_size = PROBE_BUF_MAX;
503 } else if (max_probe_size < PROBE_BUF_MIN) {
504 return AVERROR(EINVAL);
507 if (offset >= max_probe_size) {
508 return AVERROR(EINVAL);
511 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt && ret >= 0;
512 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
513 int ret, score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
514 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
516 if (probe_size < offset) {
520 /* read probe data */
521 buf = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
522 if ((ret = get_buffer(*pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
523 /* fail if error was not end of file, otherwise, lower score */
524 if (ret != AVERROR_EOF) {
529 ret = 0; /* error was end of file, nothing read */
532 pd.buf = &buf[offset];
534 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
536 /* guess file format */
537 *fmt = av_probe_input_format2(&pd, 1, &score);
539 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
540 av_log(logctx, AV_LOG_WARNING, "Format detected only with low score of %d, misdetection possible!\n", score);
542 av_log(logctx, AV_LOG_DEBUG, "Probed with size=%d and score=%d\n", probe_size, score);
548 return AVERROR_INVALIDDATA;
551 /* rewind. reuse probe buffer to avoid seeking */
552 if ((ret = ff_rewind_with_probe_data(*pb, buf, pd.buf_size)) < 0)
558 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
561 AVFormatParameters *ap)
564 AVProbeData probe_data, *pd = &probe_data;
565 ByteIOContext *pb = NULL;
566 void *logctx= ap && ap->prealloced_context ? *ic_ptr : NULL;
570 pd->filename = filename;
575 /* guess format if no file can be opened */
576 fmt = av_probe_input_format(pd, 0);
579 /* Do not open file if the format does not need it. XXX: specific
580 hack needed to handle RTSP/TCP */
581 if (!fmt || !(fmt->flags & AVFMT_NOFILE)) {
582 /* if no file needed do not try to open one */
583 if ((err=url_fopen(&pb, filename, URL_RDONLY)) < 0) {
587 url_setbufsize(pb, buf_size);
589 if (!fmt && (err = ff_probe_input_buffer(&pb, &fmt, filename, logctx, 0, logctx ? (*ic_ptr)->probesize : 0)) < 0) {
594 /* if still no format found, error */
596 err = AVERROR_INVALIDDATA;
600 /* check filename in case an image number is expected */
601 if (fmt->flags & AVFMT_NEEDNUMBER) {
602 if (!av_filename_number_test(filename)) {
603 err = AVERROR_NUMEXPECTED;
607 err = av_open_input_stream(ic_ptr, pb, filename, fmt, ap);
615 if (ap && ap->prealloced_context)
622 /*******************************************************/
624 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
625 AVPacketList **plast_pktl){
626 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
631 (*plast_pktl)->next = pktl;
633 *packet_buffer = pktl;
635 /* add the packet in the buffered packet list */
641 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
647 AVPacketList *pktl = s->raw_packet_buffer;
651 if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE ||
652 !s->streams[pkt->stream_index]->probe_packets ||
653 s->raw_packet_buffer_remaining_size < pkt->size){
654 AVProbeData *pd = &s->streams[pkt->stream_index]->probe_data;
657 s->raw_packet_buffer = pktl->next;
658 s->raw_packet_buffer_remaining_size += pkt->size;
665 ret= s->iformat->read_packet(s, pkt);
667 if (!pktl || ret == AVERROR(EAGAIN))
669 for (i = 0; i < s->nb_streams; i++)
670 s->streams[i]->probe_packets = 0;
673 st= s->streams[pkt->stream_index];
675 switch(st->codec->codec_type){
676 case AVMEDIA_TYPE_VIDEO:
677 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
679 case AVMEDIA_TYPE_AUDIO:
680 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
682 case AVMEDIA_TYPE_SUBTITLE:
683 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
687 if(!pktl && (st->codec->codec_id != CODEC_ID_PROBE ||
691 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
692 s->raw_packet_buffer_remaining_size -= pkt->size;
694 if(st->codec->codec_id == CODEC_ID_PROBE){
695 AVProbeData *pd = &st->probe_data;
696 av_log(s, AV_LOG_DEBUG, "probing stream %d\n", st->index);
699 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
700 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
701 pd->buf_size += pkt->size;
702 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
704 if(av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
705 //FIXME we dont reduce score to 0 for the case of running out of buffer space in bytes
706 set_codec_from_probe_data(s, st, pd, st->probe_packets > 0 ? AVPROBE_SCORE_MAX/4 : 0);
707 if(st->codec->codec_id != CODEC_ID_PROBE){
710 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
717 /**********************************************************/
720 * Get the number of samples of an audio frame. Return -1 on error.
722 static int get_audio_frame_size(AVCodecContext *enc, int size)
726 if(enc->codec_id == CODEC_ID_VORBIS)
729 if (enc->frame_size <= 1) {
730 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
732 if (bits_per_sample) {
733 if (enc->channels == 0)
735 frame_size = (size << 3) / (bits_per_sample * enc->channels);
737 /* used for example by ADPCM codecs */
738 if (enc->bit_rate == 0)
740 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
743 frame_size = enc->frame_size;
750 * Return the frame duration in seconds. Return 0 if not available.
752 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
753 AVCodecParserContext *pc, AVPacket *pkt)
759 switch(st->codec->codec_type) {
760 case AVMEDIA_TYPE_VIDEO:
761 if(st->time_base.num*1000LL > st->time_base.den){
762 *pnum = st->time_base.num;
763 *pden = st->time_base.den;
764 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
765 *pnum = st->codec->time_base.num;
766 *pden = st->codec->time_base.den;
767 if (pc && pc->repeat_pict) {
768 *pnum = (*pnum) * (1 + pc->repeat_pict);
770 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
771 //Thus if we have no parser in such case leave duration undefined.
772 if(st->codec->ticks_per_frame>1 && !pc){
777 case AVMEDIA_TYPE_AUDIO:
778 frame_size = get_audio_frame_size(st->codec, pkt->size);
782 *pden = st->codec->sample_rate;
789 static int is_intra_only(AVCodecContext *enc){
790 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
792 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
793 switch(enc->codec_id){
795 case CODEC_ID_MJPEGB:
797 case CODEC_ID_RAWVIDEO:
798 case CODEC_ID_DVVIDEO:
799 case CODEC_ID_HUFFYUV:
800 case CODEC_ID_FFVHUFF:
805 case CODEC_ID_JPEG2000:
813 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
814 int64_t dts, int64_t pts)
816 AVStream *st= s->streams[stream_index];
817 AVPacketList *pktl= s->packet_buffer;
819 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
822 st->first_dts= dts - st->cur_dts;
825 for(; pktl; pktl= pktl->next){
826 if(pktl->pkt.stream_index != stream_index)
828 //FIXME think more about this check
829 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
830 pktl->pkt.pts += st->first_dts;
832 if(pktl->pkt.dts != AV_NOPTS_VALUE)
833 pktl->pkt.dts += st->first_dts;
835 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
836 st->start_time= pktl->pkt.pts;
838 if (st->start_time == AV_NOPTS_VALUE)
839 st->start_time = pts;
842 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
844 AVPacketList *pktl= s->packet_buffer;
847 if(st->first_dts != AV_NOPTS_VALUE){
848 cur_dts= st->first_dts;
849 for(; pktl; pktl= pktl->next){
850 if(pktl->pkt.stream_index == pkt->stream_index){
851 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
853 cur_dts -= pkt->duration;
856 pktl= s->packet_buffer;
857 st->first_dts = cur_dts;
858 }else if(st->cur_dts)
861 for(; pktl; pktl= pktl->next){
862 if(pktl->pkt.stream_index != pkt->stream_index)
864 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
865 && !pktl->pkt.duration){
866 pktl->pkt.dts= cur_dts;
867 if(!st->codec->has_b_frames)
868 pktl->pkt.pts= cur_dts;
869 cur_dts += pkt->duration;
870 pktl->pkt.duration= pkt->duration;
874 if(st->first_dts == AV_NOPTS_VALUE)
875 st->cur_dts= cur_dts;
878 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
879 AVCodecParserContext *pc, AVPacket *pkt)
881 int num, den, presentation_delayed, delay, i;
884 if (s->flags & AVFMT_FLAG_NOFILLIN)
887 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
888 pkt->dts= AV_NOPTS_VALUE;
890 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == FF_B_TYPE)
891 //FIXME Set low_delay = 0 when has_b_frames = 1
892 st->codec->has_b_frames = 1;
894 /* do we have a video B-frame ? */
895 delay= st->codec->has_b_frames;
896 presentation_delayed = 0;
897 /* XXX: need has_b_frame, but cannot get it if the codec is
900 pc && pc->pict_type != FF_B_TYPE)
901 presentation_delayed = 1;
903 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts > pkt->pts && st->pts_wrap_bits<63
904 /*&& pkt->dts-(1LL<<st->pts_wrap_bits) < pkt->pts*/){
905 pkt->dts -= 1LL<<st->pts_wrap_bits;
908 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
909 // we take the conservative approach and discard both
910 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
911 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
912 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination\n");
913 pkt->dts= pkt->pts= AV_NOPTS_VALUE;
916 if (pkt->duration == 0) {
917 compute_frame_duration(&num, &den, st, pc, pkt);
919 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
921 if(pkt->duration != 0 && s->packet_buffer)
922 update_initial_durations(s, st, pkt);
926 /* correct timestamps with byte offset if demuxers only have timestamps
927 on packet boundaries */
928 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
929 /* this will estimate bitrate based on this frame's duration and size */
930 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
931 if(pkt->pts != AV_NOPTS_VALUE)
933 if(pkt->dts != AV_NOPTS_VALUE)
937 if (pc && pc->dts_sync_point >= 0) {
938 // we have synchronization info from the parser
939 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
941 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
942 if (pkt->dts != AV_NOPTS_VALUE) {
943 // got DTS from the stream, update reference timestamp
944 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
945 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
946 } else if (st->reference_dts != AV_NOPTS_VALUE) {
947 // compute DTS based on reference timestamp
948 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
949 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
951 if (pc->dts_sync_point > 0)
952 st->reference_dts = pkt->dts; // new reference
956 /* This may be redundant, but it should not hurt. */
957 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
958 presentation_delayed = 1;
960 // 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);
961 /* interpolate PTS and DTS if they are not present */
962 //We skip H264 currently because delay and has_b_frames are not reliably set
963 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
964 if (presentation_delayed) {
965 /* DTS = decompression timestamp */
966 /* PTS = presentation timestamp */
967 if (pkt->dts == AV_NOPTS_VALUE)
968 pkt->dts = st->last_IP_pts;
969 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
970 if (pkt->dts == AV_NOPTS_VALUE)
971 pkt->dts = st->cur_dts;
973 /* this is tricky: the dts must be incremented by the duration
974 of the frame we are displaying, i.e. the last I- or P-frame */
975 if (st->last_IP_duration == 0)
976 st->last_IP_duration = pkt->duration;
977 if(pkt->dts != AV_NOPTS_VALUE)
978 st->cur_dts = pkt->dts + st->last_IP_duration;
979 st->last_IP_duration = pkt->duration;
980 st->last_IP_pts= pkt->pts;
981 /* cannot compute PTS if not present (we can compute it only
982 by knowing the future */
983 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
984 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
985 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
986 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
987 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
988 pkt->pts += pkt->duration;
989 // 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);
993 /* presentation is not delayed : PTS and DTS are the same */
994 if(pkt->pts == AV_NOPTS_VALUE)
996 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
997 if(pkt->pts == AV_NOPTS_VALUE)
998 pkt->pts = st->cur_dts;
1000 if(pkt->pts != AV_NOPTS_VALUE)
1001 st->cur_dts = pkt->pts + pkt->duration;
1005 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1006 st->pts_buffer[0]= pkt->pts;
1007 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1008 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1009 if(pkt->dts == AV_NOPTS_VALUE)
1010 pkt->dts= st->pts_buffer[0];
1011 if(st->codec->codec_id == CODEC_ID_H264){ //we skiped it above so we try here
1012 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1014 if(pkt->dts > st->cur_dts)
1015 st->cur_dts = pkt->dts;
1018 // 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);
1021 if(is_intra_only(st->codec))
1022 pkt->flags |= AV_PKT_FLAG_KEY;
1025 /* keyframe computation */
1026 if (pc->key_frame == 1)
1027 pkt->flags |= AV_PKT_FLAG_KEY;
1028 else if (pc->key_frame == -1 && pc->pict_type == FF_I_TYPE)
1029 pkt->flags |= AV_PKT_FLAG_KEY;
1032 pkt->convergence_duration = pc->convergence_duration;
1036 static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1041 av_init_packet(pkt);
1044 /* select current input stream component */
1047 if (!st->need_parsing || !st->parser) {
1048 /* no parsing needed: we just output the packet as is */
1049 /* raw data support */
1050 *pkt = st->cur_pkt; st->cur_pkt.data= NULL;
1051 compute_pkt_fields(s, st, NULL, pkt);
1053 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1054 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1055 ff_reduce_index(s, st->index);
1056 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1059 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1060 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1061 st->cur_ptr, st->cur_len,
1062 st->cur_pkt.pts, st->cur_pkt.dts,
1064 st->cur_pkt.pts = AV_NOPTS_VALUE;
1065 st->cur_pkt.dts = AV_NOPTS_VALUE;
1066 /* increment read pointer */
1070 /* return packet if any */
1074 pkt->stream_index = st->index;
1075 pkt->pts = st->parser->pts;
1076 pkt->dts = st->parser->dts;
1077 pkt->pos = st->parser->pos;
1078 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1080 pkt->destruct= st->cur_pkt.destruct;
1081 st->cur_pkt.destruct= NULL;
1082 st->cur_pkt.data = NULL;
1083 assert(st->cur_len == 0);
1085 pkt->destruct = NULL;
1087 compute_pkt_fields(s, st, st->parser, pkt);
1089 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1090 ff_reduce_index(s, st->index);
1091 av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
1092 0, 0, AVINDEX_KEYFRAME);
1099 av_free_packet(&st->cur_pkt);
1104 /* read next packet */
1105 ret = av_read_packet(s, &cur_pkt);
1107 if (ret == AVERROR(EAGAIN))
1109 /* return the last frames, if any */
1110 for(i = 0; i < s->nb_streams; i++) {
1112 if (st->parser && st->need_parsing) {
1113 av_parser_parse2(st->parser, st->codec,
1114 &pkt->data, &pkt->size,
1116 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1122 /* no more packets: really terminate parsing */
1125 st = s->streams[cur_pkt.stream_index];
1126 st->cur_pkt= cur_pkt;
1128 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1129 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1130 st->cur_pkt.pts < st->cur_pkt.dts){
1131 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1132 st->cur_pkt.stream_index,
1136 // av_free_packet(&st->cur_pkt);
1140 if(s->debug & FF_FDEBUG_TS)
1141 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1142 st->cur_pkt.stream_index,
1146 st->cur_pkt.duration,
1150 st->cur_ptr = st->cur_pkt.data;
1151 st->cur_len = st->cur_pkt.size;
1152 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1153 st->parser = av_parser_init(st->codec->codec_id);
1155 /* no parser available: just output the raw packets */
1156 st->need_parsing = AVSTREAM_PARSE_NONE;
1157 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1158 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1159 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1160 st->parser->flags |= PARSER_FLAG_ONCE;
1165 if(s->debug & FF_FDEBUG_TS)
1166 av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1177 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1181 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
1184 pktl = s->packet_buffer;
1186 AVPacket *next_pkt= &pktl->pkt;
1188 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
1189 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1190 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
1191 if( pktl->pkt.stream_index == next_pkt->stream_index
1192 && (0 > av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)))
1193 && av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1194 next_pkt->pts= pktl->pkt.dts;
1198 pktl = s->packet_buffer;
1201 if( next_pkt->pts != AV_NOPTS_VALUE
1202 || next_pkt->dts == AV_NOPTS_VALUE
1204 /* read packet from packet buffer, if there is data */
1206 s->packet_buffer = pktl->next;
1212 int ret= av_read_frame_internal(s, pkt);
1214 if(pktl && ret != AVERROR(EAGAIN)){
1221 if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1222 &s->packet_buffer_end)) < 0)
1223 return AVERROR(ENOMEM);
1225 assert(!s->packet_buffer);
1226 return av_read_frame_internal(s, pkt);
1231 /* XXX: suppress the packet queue */
1232 static void flush_packet_queue(AVFormatContext *s)
1237 pktl = s->packet_buffer;
1240 s->packet_buffer = pktl->next;
1241 av_free_packet(&pktl->pkt);
1244 while(s->raw_packet_buffer){
1245 pktl = s->raw_packet_buffer;
1246 s->raw_packet_buffer = pktl->next;
1247 av_free_packet(&pktl->pkt);
1250 s->packet_buffer_end=
1251 s->raw_packet_buffer_end= NULL;
1252 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1255 /*******************************************************/
1258 int av_find_default_stream_index(AVFormatContext *s)
1260 int first_audio_index = -1;
1264 if (s->nb_streams <= 0)
1266 for(i = 0; i < s->nb_streams; i++) {
1268 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1271 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1272 first_audio_index = i;
1274 return first_audio_index >= 0 ? first_audio_index : 0;
1278 * Flush the frame reader.
1280 void ff_read_frame_flush(AVFormatContext *s)
1285 flush_packet_queue(s);
1289 /* for each stream, reset read state */
1290 for(i = 0; i < s->nb_streams; i++) {
1294 av_parser_close(st->parser);
1296 av_free_packet(&st->cur_pkt);
1298 st->last_IP_pts = AV_NOPTS_VALUE;
1299 st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1300 st->reference_dts = AV_NOPTS_VALUE;
1305 st->probe_packets = MAX_PROBE_PACKETS;
1307 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1308 st->pts_buffer[j]= AV_NOPTS_VALUE;
1312 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
1315 for(i = 0; i < s->nb_streams; i++) {
1316 AVStream *st = s->streams[i];
1318 st->cur_dts = av_rescale(timestamp,
1319 st->time_base.den * (int64_t)ref_st->time_base.num,
1320 st->time_base.num * (int64_t)ref_st->time_base.den);
1324 void ff_reduce_index(AVFormatContext *s, int stream_index)
1326 AVStream *st= s->streams[stream_index];
1327 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1329 if((unsigned)st->nb_index_entries >= max_entries){
1331 for(i=0; 2*i<st->nb_index_entries; i++)
1332 st->index_entries[i]= st->index_entries[2*i];
1333 st->nb_index_entries= i;
1337 int av_add_index_entry(AVStream *st,
1338 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1340 AVIndexEntry *entries, *ie;
1343 if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1346 entries = av_fast_realloc(st->index_entries,
1347 &st->index_entries_allocated_size,
1348 (st->nb_index_entries + 1) *
1349 sizeof(AVIndexEntry));
1353 st->index_entries= entries;
1355 index= av_index_search_timestamp(st, timestamp, AVSEEK_FLAG_ANY);
1358 index= st->nb_index_entries++;
1359 ie= &entries[index];
1360 assert(index==0 || ie[-1].timestamp < timestamp);
1362 ie= &entries[index];
1363 if(ie->timestamp != timestamp){
1364 if(ie->timestamp <= timestamp)
1366 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(st->nb_index_entries - index));
1367 st->nb_index_entries++;
1368 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1369 distance= ie->min_distance;
1373 ie->timestamp = timestamp;
1374 ie->min_distance= distance;
1381 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1384 AVIndexEntry *entries= st->index_entries;
1385 int nb_entries= st->nb_index_entries;
1392 //optimize appending index entries at the end
1393 if(b && entries[b-1].timestamp < wanted_timestamp)
1398 timestamp = entries[m].timestamp;
1399 if(timestamp >= wanted_timestamp)
1401 if(timestamp <= wanted_timestamp)
1404 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1406 if(!(flags & AVSEEK_FLAG_ANY)){
1407 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1408 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1419 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1420 AVInputFormat *avif= s->iformat;
1421 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1422 int64_t ts_min, ts_max, ts;
1427 if (stream_index < 0)
1431 av_log(s, AV_LOG_DEBUG, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1435 ts_min= AV_NOPTS_VALUE;
1436 pos_limit= -1; //gcc falsely says it may be uninitialized
1438 st= s->streams[stream_index];
1439 if(st->index_entries){
1442 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()
1443 index= FFMAX(index, 0);
1444 e= &st->index_entries[index];
1446 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1448 ts_min= e->timestamp;
1450 av_log(s, AV_LOG_DEBUG, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1457 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1458 assert(index < st->nb_index_entries);
1460 e= &st->index_entries[index];
1461 assert(e->timestamp >= target_ts);
1463 ts_max= e->timestamp;
1464 pos_limit= pos_max - e->min_distance;
1466 av_log(s, AV_LOG_DEBUG, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1467 pos_max,pos_limit, ts_max);
1472 pos= av_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1477 if ((ret = url_fseek(s->pb, pos, SEEK_SET)) < 0)
1480 av_update_cur_dts(s, st, ts);
1485 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 )){
1487 int64_t start_pos, filesize;
1491 av_log(s, AV_LOG_DEBUG, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1494 if(ts_min == AV_NOPTS_VALUE){
1495 pos_min = s->data_offset;
1496 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1497 if (ts_min == AV_NOPTS_VALUE)
1501 if(ts_max == AV_NOPTS_VALUE){
1503 filesize = url_fsize(s->pb);
1504 pos_max = filesize - 1;
1507 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1509 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1510 if (ts_max == AV_NOPTS_VALUE)
1514 int64_t tmp_pos= pos_max + 1;
1515 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1516 if(tmp_ts == AV_NOPTS_VALUE)
1520 if(tmp_pos >= filesize)
1526 if(ts_min > ts_max){
1528 }else if(ts_min == ts_max){
1533 while (pos_min < pos_limit) {
1535 av_log(s, AV_LOG_DEBUG, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1539 assert(pos_limit <= pos_max);
1542 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1543 // interpolate position (better than dichotomy)
1544 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1545 + pos_min - approximate_keyframe_distance;
1546 }else if(no_change==1){
1547 // bisection, if interpolation failed to change min or max pos last time
1548 pos = (pos_min + pos_limit)>>1;
1550 /* linear search if bisection failed, can only happen if there
1551 are very few or no keyframes between min/max */
1556 else if(pos > pos_limit)
1560 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1566 av_log(s, AV_LOG_DEBUG, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1567 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit,
1568 start_pos, no_change);
1570 if(ts == AV_NOPTS_VALUE){
1571 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1574 assert(ts != AV_NOPTS_VALUE);
1575 if (target_ts <= ts) {
1576 pos_limit = start_pos - 1;
1580 if (target_ts >= ts) {
1586 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1587 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1590 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1592 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1593 av_log(s, AV_LOG_DEBUG, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1594 pos, ts_min, target_ts, ts_max);
1600 static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1601 int64_t pos_min, pos_max;
1605 if (stream_index < 0)
1608 st= s->streams[stream_index];
1611 pos_min = s->data_offset;
1612 pos_max = url_fsize(s->pb) - 1;
1614 if (pos < pos_min) pos= pos_min;
1615 else if(pos > pos_max) pos= pos_max;
1617 url_fseek(s->pb, pos, SEEK_SET);
1620 av_update_cur_dts(s, st, ts);
1625 static int av_seek_frame_generic(AVFormatContext *s,
1626 int stream_index, int64_t timestamp, int flags)
1633 st = s->streams[stream_index];
1635 index = av_index_search_timestamp(st, timestamp, flags);
1637 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1640 if(index < 0 || index==st->nb_index_entries-1){
1644 if(st->nb_index_entries){
1645 assert(st->index_entries);
1646 ie= &st->index_entries[st->nb_index_entries-1];
1647 if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
1649 av_update_cur_dts(s, st, ie->timestamp);
1651 if ((ret = url_fseek(s->pb, s->data_offset, SEEK_SET)) < 0)
1657 ret = av_read_frame(s, &pkt);
1658 }while(ret == AVERROR(EAGAIN));
1661 av_free_packet(&pkt);
1662 if(stream_index == pkt.stream_index){
1663 if((pkt.flags & AV_PKT_FLAG_KEY) && pkt.dts > timestamp)
1667 index = av_index_search_timestamp(st, timestamp, flags);
1672 ff_read_frame_flush(s);
1673 if (s->iformat->read_seek){
1674 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1677 ie = &st->index_entries[index];
1678 if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
1680 av_update_cur_dts(s, st, ie->timestamp);
1685 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1690 ff_read_frame_flush(s);
1692 if(flags & AVSEEK_FLAG_BYTE)
1693 return av_seek_frame_byte(s, stream_index, timestamp, flags);
1695 if(stream_index < 0){
1696 stream_index= av_find_default_stream_index(s);
1697 if(stream_index < 0)
1700 st= s->streams[stream_index];
1701 /* timestamp for default must be expressed in AV_TIME_BASE units */
1702 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1705 /* first, we try the format specific seek */
1706 if (s->iformat->read_seek)
1707 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1714 if(s->iformat->read_timestamp)
1715 return av_seek_frame_binary(s, stream_index, timestamp, flags);
1717 return av_seek_frame_generic(s, stream_index, timestamp, flags);
1720 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1722 if(min_ts > ts || max_ts < ts)
1725 ff_read_frame_flush(s);
1727 if (s->iformat->read_seek2)
1728 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1730 if(s->iformat->read_timestamp){
1731 //try to seek via read_timestamp()
1734 //Fallback to old API if new is not implemented but old is
1735 //Note the old has somewat different sematics
1736 if(s->iformat->read_seek || 1)
1737 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1739 // try some generic seek like av_seek_frame_generic() but with new ts semantics
1742 /*******************************************************/
1745 * Return TRUE if the stream has accurate duration in any stream.
1747 * @return TRUE if the stream has accurate duration for at least one component.
1749 static int av_has_duration(AVFormatContext *ic)
1754 for(i = 0;i < ic->nb_streams; i++) {
1755 st = ic->streams[i];
1756 if (st->duration != AV_NOPTS_VALUE)
1763 * Estimate the stream timings from the one of each components.
1765 * Also computes the global bitrate if possible.
1767 static void av_update_stream_timings(AVFormatContext *ic)
1769 int64_t start_time, start_time1, end_time, end_time1;
1770 int64_t duration, duration1;
1774 start_time = INT64_MAX;
1775 end_time = INT64_MIN;
1776 duration = INT64_MIN;
1777 for(i = 0;i < ic->nb_streams; i++) {
1778 st = ic->streams[i];
1779 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1780 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1781 if (start_time1 < start_time)
1782 start_time = start_time1;
1783 if (st->duration != AV_NOPTS_VALUE) {
1784 end_time1 = start_time1
1785 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1786 if (end_time1 > end_time)
1787 end_time = end_time1;
1790 if (st->duration != AV_NOPTS_VALUE) {
1791 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1792 if (duration1 > duration)
1793 duration = duration1;
1796 if (start_time != INT64_MAX) {
1797 ic->start_time = start_time;
1798 if (end_time != INT64_MIN) {
1799 if (end_time - start_time > duration)
1800 duration = end_time - start_time;
1803 if (duration != INT64_MIN) {
1804 ic->duration = duration;
1805 if (ic->file_size > 0) {
1806 /* compute the bitrate */
1807 ic->bit_rate = (double)ic->file_size * 8.0 * AV_TIME_BASE /
1808 (double)ic->duration;
1813 static void fill_all_stream_timings(AVFormatContext *ic)
1818 av_update_stream_timings(ic);
1819 for(i = 0;i < ic->nb_streams; i++) {
1820 st = ic->streams[i];
1821 if (st->start_time == AV_NOPTS_VALUE) {
1822 if(ic->start_time != AV_NOPTS_VALUE)
1823 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
1824 if(ic->duration != AV_NOPTS_VALUE)
1825 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
1830 static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
1832 int64_t filesize, duration;
1836 /* if bit_rate is already set, we believe it */
1837 if (ic->bit_rate == 0) {
1839 for(i=0;i<ic->nb_streams;i++) {
1840 st = ic->streams[i];
1841 bit_rate += st->codec->bit_rate;
1843 ic->bit_rate = bit_rate;
1846 /* if duration is already set, we believe it */
1847 if (ic->duration == AV_NOPTS_VALUE &&
1848 ic->bit_rate != 0 &&
1849 ic->file_size != 0) {
1850 filesize = ic->file_size;
1852 for(i = 0; i < ic->nb_streams; i++) {
1853 st = ic->streams[i];
1854 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
1855 if (st->duration == AV_NOPTS_VALUE)
1856 st->duration = duration;
1862 #define DURATION_MAX_READ_SIZE 250000
1863 #define DURATION_MAX_RETRY 3
1865 /* only usable for MPEG-PS streams */
1866 static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
1868 AVPacket pkt1, *pkt = &pkt1;
1870 int read_size, i, ret;
1871 int64_t end_time, start_time[MAX_STREAMS];
1872 int64_t filesize, offset, duration;
1877 /* flush packet queue */
1878 flush_packet_queue(ic);
1880 for(i=0;i<ic->nb_streams;i++) {
1881 st = ic->streams[i];
1882 if(st->start_time != AV_NOPTS_VALUE){
1883 start_time[i]= st->start_time;
1884 }else if(st->first_dts != AV_NOPTS_VALUE){
1885 start_time[i]= st->first_dts;
1887 av_log(st->codec, AV_LOG_WARNING, "start time is not set in av_estimate_timings_from_pts\n");
1890 av_parser_close(st->parser);
1892 av_free_packet(&st->cur_pkt);
1896 /* estimate the end time (duration) */
1897 /* XXX: may need to support wrapping */
1898 filesize = ic->file_size;
1899 end_time = AV_NOPTS_VALUE;
1901 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
1905 url_fseek(ic->pb, offset, SEEK_SET);
1908 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
1912 ret = av_read_packet(ic, pkt);
1913 }while(ret == AVERROR(EAGAIN));
1916 read_size += pkt->size;
1917 st = ic->streams[pkt->stream_index];
1918 if (pkt->pts != AV_NOPTS_VALUE &&
1919 start_time[pkt->stream_index] != AV_NOPTS_VALUE) {
1920 end_time = pkt->pts;
1921 duration = end_time - start_time[pkt->stream_index];
1923 duration += 1LL<<st->pts_wrap_bits;
1925 if (st->duration == AV_NOPTS_VALUE ||
1926 st->duration < duration)
1927 st->duration = duration;
1930 av_free_packet(pkt);
1932 }while( end_time==AV_NOPTS_VALUE
1933 && filesize > (DURATION_MAX_READ_SIZE<<retry)
1934 && ++retry <= DURATION_MAX_RETRY);
1936 fill_all_stream_timings(ic);
1938 url_fseek(ic->pb, old_offset, SEEK_SET);
1939 for(i=0; i<ic->nb_streams; i++){
1941 st->cur_dts= st->first_dts;
1942 st->last_IP_pts = AV_NOPTS_VALUE;
1946 static void av_estimate_timings(AVFormatContext *ic, int64_t old_offset)
1950 /* get the file size, if possible */
1951 if (ic->iformat->flags & AVFMT_NOFILE) {
1954 file_size = url_fsize(ic->pb);
1958 ic->file_size = file_size;
1960 if ((!strcmp(ic->iformat->name, "mpeg") ||
1961 !strcmp(ic->iformat->name, "mpegts")) &&
1962 file_size && !url_is_streamed(ic->pb)) {
1963 /* get accurate estimate from the PTSes */
1964 av_estimate_timings_from_pts(ic, old_offset);
1965 } else if (av_has_duration(ic)) {
1966 /* at least one component has timings - we use them for all
1968 fill_all_stream_timings(ic);
1970 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
1971 /* less precise: use bitrate info */
1972 av_estimate_timings_from_bit_rate(ic);
1974 av_update_stream_timings(ic);
1980 for(i = 0;i < ic->nb_streams; i++) {
1981 st = ic->streams[i];
1982 printf("%d: start_time: %0.3f duration: %0.3f\n",
1983 i, (double)st->start_time / AV_TIME_BASE,
1984 (double)st->duration / AV_TIME_BASE);
1986 printf("stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
1987 (double)ic->start_time / AV_TIME_BASE,
1988 (double)ic->duration / AV_TIME_BASE,
1989 ic->bit_rate / 1000);
1994 static int has_codec_parameters(AVCodecContext *enc)
1997 switch(enc->codec_type) {
1998 case AVMEDIA_TYPE_AUDIO:
1999 val = enc->sample_rate && enc->channels && enc->sample_fmt != SAMPLE_FMT_NONE;
2000 if(!enc->frame_size &&
2001 (enc->codec_id == CODEC_ID_VORBIS ||
2002 enc->codec_id == CODEC_ID_AAC ||
2003 enc->codec_id == CODEC_ID_MP1 ||
2004 enc->codec_id == CODEC_ID_MP2 ||
2005 enc->codec_id == CODEC_ID_MP3 ||
2006 enc->codec_id == CODEC_ID_SPEEX))
2009 case AVMEDIA_TYPE_VIDEO:
2010 val = enc->width && enc->pix_fmt != PIX_FMT_NONE;
2016 return enc->codec_id != CODEC_ID_NONE && val != 0;
2019 static int has_decode_delay_been_guessed(AVStream *st)
2021 return st->codec->codec_id != CODEC_ID_H264 ||
2022 st->codec_info_nb_frames >= 4 + st->codec->has_b_frames;
2025 static int try_decode_frame(AVStream *st, AVPacket *avpkt)
2029 int got_picture, data_size, ret=0;
2032 if(!st->codec->codec){
2033 codec = avcodec_find_decoder(st->codec->codec_id);
2036 ret = avcodec_open(st->codec, codec);
2041 if(!has_codec_parameters(st->codec) || !has_decode_delay_been_guessed(st)){
2042 switch(st->codec->codec_type) {
2043 case AVMEDIA_TYPE_VIDEO:
2044 avcodec_get_frame_defaults(&picture);
2045 ret = avcodec_decode_video2(st->codec, &picture,
2046 &got_picture, avpkt);
2048 case AVMEDIA_TYPE_AUDIO:
2049 data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
2050 samples = av_malloc(data_size);
2053 ret = avcodec_decode_audio3(st->codec, samples,
2065 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2067 while (tags->id != CODEC_ID_NONE) {
2075 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2078 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2079 if(tag == tags[i].tag)
2082 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2083 if (ff_toupper4(tag) == ff_toupper4(tags[i].tag))
2086 return CODEC_ID_NONE;
2089 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2092 for(i=0; tags && tags[i]; i++){
2093 int tag= ff_codec_get_tag(tags[i], id);
2099 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2102 for(i=0; tags && tags[i]; i++){
2103 enum CodecID id= ff_codec_get_id(tags[i], tag);
2104 if(id!=CODEC_ID_NONE) return id;
2106 return CODEC_ID_NONE;
2109 static void compute_chapters_end(AVFormatContext *s)
2113 for (i=0; i+1<s->nb_chapters; i++)
2114 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2115 assert(s->chapters[i]->start <= s->chapters[i+1]->start);
2116 assert(!av_cmp_q(s->chapters[i]->time_base, s->chapters[i+1]->time_base));
2117 s->chapters[i]->end = s->chapters[i+1]->start;
2120 if (s->nb_chapters && s->chapters[i]->end == AV_NOPTS_VALUE) {
2121 assert(s->start_time != AV_NOPTS_VALUE);
2122 assert(s->duration > 0);
2123 s->chapters[i]->end = av_rescale_q(s->start_time + s->duration,
2125 s->chapters[i]->time_base);
2129 #define MAX_STD_TIMEBASES (60*12+5)
2130 static int get_std_framerate(int i){
2131 if(i<60*12) return i*1001;
2132 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2136 * Is the time base unreliable.
2137 * This is a heuristic to balance between quick acceptance of the values in
2138 * the headers vs. some extra checks.
2139 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2140 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2141 * And there are "variable" fps files this needs to detect as well.
2143 static int tb_unreliable(AVCodecContext *c){
2144 if( c->time_base.den >= 101L*c->time_base.num
2145 || c->time_base.den < 5L*c->time_base.num
2146 /* || c->codec_tag == AV_RL32("DIVX")
2147 || c->codec_tag == AV_RL32("XVID")*/
2148 || c->codec_id == CODEC_ID_MPEG2VIDEO
2149 || c->codec_id == CODEC_ID_H264
2155 int av_find_stream_info(AVFormatContext *ic)
2157 int i, count, ret, read_size, j;
2159 AVPacket pkt1, *pkt;
2160 int64_t old_offset = url_ftell(ic->pb);
2163 int64_t duration_gcd;
2165 double duration_error[MAX_STD_TIMEBASES];
2166 int64_t codec_info_duration;
2167 } info[MAX_STREAMS] = {{0}};
2169 for(i=0;i<ic->nb_streams;i++) {
2170 st = ic->streams[i];
2171 if (st->codec->codec_id == CODEC_ID_AAC) {
2172 st->codec->sample_rate = 0;
2173 st->codec->frame_size = 0;
2174 st->codec->channels = 0;
2176 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
2177 /* if(!st->time_base.num)
2179 if(!st->codec->time_base.num)
2180 st->codec->time_base= st->time_base;
2182 //only for the split stuff
2183 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2184 st->parser = av_parser_init(st->codec->codec_id);
2185 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2186 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2189 assert(!st->codec->codec);
2190 //try to just open decoders, in case this is enough to get parameters
2191 if(!has_codec_parameters(st->codec)){
2192 AVCodec *codec = avcodec_find_decoder(st->codec->codec_id);
2194 avcodec_open(st->codec, codec);
2198 for(i=0;i<MAX_STREAMS;i++){
2199 info[i].last_dts= AV_NOPTS_VALUE;
2205 if(url_interrupt_cb()){
2206 ret= AVERROR(EINTR);
2207 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2211 /* check if one codec still needs to be handled */
2212 for(i=0;i<ic->nb_streams;i++) {
2213 st = ic->streams[i];
2214 if (!has_codec_parameters(st->codec))
2216 /* variable fps and no guess at the real fps */
2217 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2218 && info[i].duration_count<20 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2220 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2222 if(st->first_dts == AV_NOPTS_VALUE)
2225 if (i == ic->nb_streams) {
2226 /* NOTE: if the format has no header, then we need to read
2227 some packets to get most of the streams, so we cannot
2229 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2230 /* if we found the info for all the codecs, we can stop */
2232 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2236 /* we did not get all the codec info, but we read too much data */
2237 if (read_size >= ic->probesize) {
2239 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2243 /* NOTE: a new stream can be added there if no header in file
2244 (AVFMTCTX_NOHEADER) */
2245 ret = av_read_frame_internal(ic, &pkt1);
2246 if(ret == AVERROR(EAGAIN))
2250 ret = -1; /* we could not have all the codec parameters before EOF */
2251 for(i=0;i<ic->nb_streams;i++) {
2252 st = ic->streams[i];
2253 if (!has_codec_parameters(st->codec)){
2255 avcodec_string(buf, sizeof(buf), st->codec, 0);
2256 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2264 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2265 if(av_dup_packet(pkt) < 0) {
2266 return AVERROR(ENOMEM);
2269 read_size += pkt->size;
2271 st = ic->streams[pkt->stream_index];
2272 if(st->codec_info_nb_frames>1) {
2273 if (st->time_base.den > 0 && av_rescale_q(info[st->index].codec_info_duration, st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration){
2274 av_log(ic, AV_LOG_WARNING, "max_analyze_duration reached\n");
2277 info[st->index].codec_info_duration += pkt->duration;
2280 int index= pkt->stream_index;
2281 int64_t last= info[index].last_dts;
2282 int64_t duration= pkt->dts - last;
2284 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
2285 double dur= duration * av_q2d(st->time_base);
2287 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2288 // av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
2289 if(info[index].duration_count < 2)
2290 memset(info[index].duration_error, 0, sizeof(info[index].duration_error));
2291 for(i=1; i<MAX_STD_TIMEBASES; i++){
2292 int framerate= get_std_framerate(i);
2293 int ticks= lrintf(dur*framerate/(1001*12));
2294 double error= dur - ticks*1001*12/(double)framerate;
2295 info[index].duration_error[i] += error*error;
2297 info[index].duration_count++;
2298 // ignore the first 4 values, they might have some random jitter
2299 if (info[index].duration_count > 3)
2300 info[index].duration_gcd = av_gcd(info[index].duration_gcd, duration);
2302 if(last == AV_NOPTS_VALUE || info[index].duration_count <= 1)
2303 info[pkt->stream_index].last_dts = pkt->dts;
2305 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2306 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2308 st->codec->extradata_size= i;
2309 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2310 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2311 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2315 /* if still no information, we try to open the codec and to
2316 decompress the frame. We try to avoid that in most cases as
2317 it takes longer and uses more memory. For MPEG-4, we need to
2318 decompress for QuickTime. */
2319 if (!has_codec_parameters(st->codec) || !has_decode_delay_been_guessed(st))
2320 try_decode_frame(st, pkt);
2322 st->codec_info_nb_frames++;
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 && info[i].codec_info_duration)
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 info[i].codec_info_duration*(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) && info[i].duration_count > 15 && info[i].duration_gcd > 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 * info[i].duration_gcd, INT_MAX);
2347 if(info[i].duration_count && !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]/info[i].duration_count*101LL > st->time_base.den*/){
2352 double best_error= 2*av_q2d(st->time_base);
2353 best_error= best_error*best_error*info[i].duration_count*1000*12*30;
2355 for(j=1; j<MAX_STD_TIMEBASES; j++){
2356 double error= info[i].duration_error[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;
2417 /*******************************************************/
2419 int av_read_play(AVFormatContext *s)
2421 if (s->iformat->read_play)
2422 return s->iformat->read_play(s);
2424 return av_url_read_fpause(s->pb, 0);
2425 return AVERROR(ENOSYS);
2428 int av_read_pause(AVFormatContext *s)
2430 if (s->iformat->read_pause)
2431 return s->iformat->read_pause(s);
2433 return av_url_read_fpause(s->pb, 1);
2434 return AVERROR(ENOSYS);
2437 void av_close_input_stream(AVFormatContext *s)
2442 if (s->iformat->read_close)
2443 s->iformat->read_close(s);
2444 for(i=0;i<s->nb_streams;i++) {
2445 /* free all data in a stream component */
2448 av_parser_close(st->parser);
2449 av_free_packet(&st->cur_pkt);
2451 av_metadata_free(&st->metadata);
2452 av_free(st->index_entries);
2453 av_free(st->codec->extradata);
2455 #if FF_API_OLD_METADATA
2456 av_free(st->filename);
2458 av_free(st->priv_data);
2461 for(i=s->nb_programs-1; i>=0; i--) {
2462 #if FF_API_OLD_METADATA
2463 av_freep(&s->programs[i]->provider_name);
2464 av_freep(&s->programs[i]->name);
2466 av_metadata_free(&s->programs[i]->metadata);
2467 av_freep(&s->programs[i]->stream_index);
2468 av_freep(&s->programs[i]);
2470 av_freep(&s->programs);
2471 flush_packet_queue(s);
2472 av_freep(&s->priv_data);
2473 while(s->nb_chapters--) {
2474 #if FF_API_OLD_METADATA
2475 av_free(s->chapters[s->nb_chapters]->title);
2477 av_metadata_free(&s->chapters[s->nb_chapters]->metadata);
2478 av_free(s->chapters[s->nb_chapters]);
2480 av_freep(&s->chapters);
2481 av_metadata_free(&s->metadata);
2486 void av_close_input_file(AVFormatContext *s)
2488 ByteIOContext *pb = s->iformat->flags & AVFMT_NOFILE ? NULL : s->pb;
2489 av_close_input_stream(s);
2494 AVStream *av_new_stream(AVFormatContext *s, int id)
2499 if (s->nb_streams >= MAX_STREAMS){
2500 av_log(s, AV_LOG_ERROR, "Too many streams\n");
2504 st = av_mallocz(sizeof(AVStream));
2508 st->codec= avcodec_alloc_context();
2510 /* no default bitrate if decoding */
2511 st->codec->bit_rate = 0;
2513 st->index = s->nb_streams;
2515 st->start_time = AV_NOPTS_VALUE;
2516 st->duration = AV_NOPTS_VALUE;
2517 /* we set the current DTS to 0 so that formats without any timestamps
2518 but durations get some timestamps, formats with some unknown
2519 timestamps have their first few packets buffered and the
2520 timestamps corrected before they are returned to the user */
2522 st->first_dts = AV_NOPTS_VALUE;
2523 st->probe_packets = MAX_PROBE_PACKETS;
2525 /* default pts setting is MPEG-like */
2526 av_set_pts_info(st, 33, 1, 90000);
2527 st->last_IP_pts = AV_NOPTS_VALUE;
2528 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2529 st->pts_buffer[i]= AV_NOPTS_VALUE;
2530 st->reference_dts = AV_NOPTS_VALUE;
2532 st->sample_aspect_ratio = (AVRational){0,1};
2534 s->streams[s->nb_streams++] = st;
2538 AVProgram *av_new_program(AVFormatContext *ac, int id)
2540 AVProgram *program=NULL;
2544 av_log(ac, AV_LOG_DEBUG, "new_program: id=0x%04x\n", id);
2547 for(i=0; i<ac->nb_programs; i++)
2548 if(ac->programs[i]->id == id)
2549 program = ac->programs[i];
2552 program = av_mallocz(sizeof(AVProgram));
2555 dynarray_add(&ac->programs, &ac->nb_programs, program);
2556 program->discard = AVDISCARD_NONE;
2563 AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2565 AVChapter *chapter = NULL;
2568 for(i=0; i<s->nb_chapters; i++)
2569 if(s->chapters[i]->id == id)
2570 chapter = s->chapters[i];
2573 chapter= av_mallocz(sizeof(AVChapter));
2576 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2578 #if FF_API_OLD_METADATA
2579 av_free(chapter->title);
2581 av_metadata_set2(&chapter->metadata, "title", title, 0);
2583 chapter->time_base= time_base;
2584 chapter->start = start;
2590 /************************************************************/
2591 /* output media file */
2593 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2597 if (s->oformat->priv_data_size > 0) {
2598 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2600 return AVERROR(ENOMEM);
2602 s->priv_data = NULL;
2604 if (s->oformat->set_parameters) {
2605 ret = s->oformat->set_parameters(s, ap);
2612 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
2614 const AVCodecTag *avctag;
2616 enum CodecID id = CODEC_ID_NONE;
2617 unsigned int tag = 0;
2620 * Check that tag + id is in the table
2621 * If neither is in the table -> OK
2622 * If tag is in the table with another id -> FAIL
2623 * If id is in the table with another tag -> FAIL unless strict < normal
2625 for (n = 0; s->oformat->codec_tag[n]; n++) {
2626 avctag = s->oformat->codec_tag[n];
2627 while (avctag->id != CODEC_ID_NONE) {
2628 if (ff_toupper4(avctag->tag) == ff_toupper4(st->codec->codec_tag)) {
2630 if (id == st->codec->codec_id)
2633 if (avctag->id == st->codec->codec_id)
2638 if (id != CODEC_ID_NONE)
2640 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
2645 int av_write_header(AVFormatContext *s)
2650 // some sanity checks
2651 if (s->nb_streams == 0) {
2652 av_log(s, AV_LOG_ERROR, "no streams\n");
2653 return AVERROR(EINVAL);
2656 for(i=0;i<s->nb_streams;i++) {
2659 switch (st->codec->codec_type) {
2660 case AVMEDIA_TYPE_AUDIO:
2661 if(st->codec->sample_rate<=0){
2662 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
2663 return AVERROR(EINVAL);
2665 if(!st->codec->block_align)
2666 st->codec->block_align = st->codec->channels *
2667 av_get_bits_per_sample(st->codec->codec_id) >> 3;
2669 case AVMEDIA_TYPE_VIDEO:
2670 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
2671 av_log(s, AV_LOG_ERROR, "time base not set\n");
2672 return AVERROR(EINVAL);
2674 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
2675 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
2676 return AVERROR(EINVAL);
2678 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)){
2679 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
2680 return AVERROR(EINVAL);
2685 if(s->oformat->codec_tag){
2686 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)){
2687 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
2688 st->codec->codec_tag= 0;
2690 if(st->codec->codec_tag){
2691 if (!validate_codec_tag(s, st)) {
2693 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
2694 av_log(s, AV_LOG_ERROR,
2695 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
2696 tagbuf, st->codec->codec_tag, st->codec->codec_id);
2697 return AVERROR_INVALIDDATA;
2700 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
2703 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
2704 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
2705 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
2708 if (!s->priv_data && s->oformat->priv_data_size > 0) {
2709 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2711 return AVERROR(ENOMEM);
2714 #if FF_API_OLD_METADATA
2715 ff_metadata_mux_compat(s);
2718 /* set muxer identification string */
2719 if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
2723 if (!(m = av_mallocz(sizeof(AVMetadata))))
2724 return AVERROR(ENOMEM);
2725 av_metadata_set2(&m, "encoder", LIBAVFORMAT_IDENT, 0);
2726 metadata_conv(&m, s->oformat->metadata_conv, NULL);
2727 if ((t = av_metadata_get(m, "", NULL, AV_METADATA_IGNORE_SUFFIX)))
2728 av_metadata_set2(&s->metadata, t->key, t->value, 0);
2729 av_metadata_free(&m);
2732 if(s->oformat->write_header){
2733 ret = s->oformat->write_header(s);
2738 /* init PTS generation */
2739 for(i=0;i<s->nb_streams;i++) {
2740 int64_t den = AV_NOPTS_VALUE;
2743 switch (st->codec->codec_type) {
2744 case AVMEDIA_TYPE_AUDIO:
2745 den = (int64_t)st->time_base.num * st->codec->sample_rate;
2747 case AVMEDIA_TYPE_VIDEO:
2748 den = (int64_t)st->time_base.num * st->codec->time_base.den;
2753 if (den != AV_NOPTS_VALUE) {
2755 return AVERROR_INVALIDDATA;
2756 av_frac_init(&st->pts, 0, 0, den);
2762 //FIXME merge with compute_pkt_fields
2763 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
2764 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
2765 int num, den, frame_size, i;
2767 // 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);
2769 /* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
2772 /* duration field */
2773 if (pkt->duration == 0) {
2774 compute_frame_duration(&num, &den, st, NULL, pkt);
2776 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
2780 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
2783 //XXX/FIXME this is a temporary hack until all encoders output pts
2784 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
2786 // pkt->pts= st->cur_dts;
2787 pkt->pts= st->pts.val;
2790 //calculate dts from pts
2791 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
2792 st->pts_buffer[0]= pkt->pts;
2793 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
2794 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
2795 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
2796 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
2798 pkt->dts= st->pts_buffer[0];
2801 if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
2802 av_log(s, AV_LOG_ERROR,
2803 "st:%d error, non monotone timestamps %"PRId64" >= %"PRId64"\n",
2804 st->index, st->cur_dts, pkt->dts);
2807 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
2808 av_log(s, AV_LOG_ERROR, "st:%d error, pts < dts\n", st->index);
2812 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
2813 st->cur_dts= pkt->dts;
2814 st->pts.val= pkt->dts;
2817 switch (st->codec->codec_type) {
2818 case AVMEDIA_TYPE_AUDIO:
2819 frame_size = get_audio_frame_size(st->codec, pkt->size);
2821 /* HACK/FIXME, we skip the initial 0 size packets as they are most
2822 likely equal to the encoder delay, but it would be better if we
2823 had the real timestamps from the encoder */
2824 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
2825 av_frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
2828 case AVMEDIA_TYPE_VIDEO:
2829 av_frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
2837 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
2839 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
2841 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2844 ret= s->oformat->write_packet(s, pkt);
2846 ret= url_ferror(s->pb);
2850 void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
2851 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
2853 AVPacketList **next_point, *this_pktl;
2855 this_pktl = av_mallocz(sizeof(AVPacketList));
2856 this_pktl->pkt= *pkt;
2857 pkt->destruct= NULL; // do not free original but only the copy
2858 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
2860 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
2861 next_point = &(s->streams[pkt->stream_index]->last_in_packet_buffer->next);
2863 next_point = &s->packet_buffer;
2866 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
2867 while(!compare(s, &(*next_point)->pkt, pkt)){
2868 next_point= &(*next_point)->next;
2872 next_point = &(s->packet_buffer_end->next);
2875 assert(!*next_point);
2877 s->packet_buffer_end= this_pktl;
2880 this_pktl->next= *next_point;
2882 s->streams[pkt->stream_index]->last_in_packet_buffer=
2883 *next_point= this_pktl;
2886 int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2888 AVStream *st = s->streams[ pkt ->stream_index];
2889 AVStream *st2= s->streams[ next->stream_index];
2890 int64_t a= st2->time_base.num * (int64_t)st ->time_base.den;
2891 int64_t b= st ->time_base.num * (int64_t)st2->time_base.den;
2892 return av_rescale_rnd(pkt->dts, b, a, AV_ROUND_DOWN) < next->dts;
2895 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
2901 ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
2904 for(i=0; i < s->nb_streams; i++)
2905 stream_count+= !!s->streams[i]->last_in_packet_buffer;
2907 if(stream_count && (s->nb_streams == stream_count || flush)){
2908 pktl= s->packet_buffer;
2911 s->packet_buffer= pktl->next;
2912 if(!s->packet_buffer)
2913 s->packet_buffer_end= NULL;
2915 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
2916 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
2920 av_init_packet(out);
2926 * Interleave an AVPacket correctly so it can be muxed.
2927 * @param out the interleaved packet will be output here
2928 * @param in the input packet
2929 * @param flush 1 if no further packets are available as input and all
2930 * remaining packets should be output
2931 * @return 1 if a packet was output, 0 if no packet could be output,
2932 * < 0 if an error occurred
2934 static int av_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
2935 if(s->oformat->interleave_packet)
2936 return s->oformat->interleave_packet(s, out, in, flush);
2938 return av_interleave_packet_per_dts(s, out, in, flush);
2941 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
2942 AVStream *st= s->streams[ pkt->stream_index];
2944 //FIXME/XXX/HACK drop zero sized packets
2945 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
2948 //av_log(NULL, AV_LOG_DEBUG, "av_interleaved_write_frame %d %"PRId64" %"PRId64"\n", pkt->size, pkt->dts, pkt->pts);
2949 if(compute_pkt_fields2(s, st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2952 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
2957 int ret= av_interleave_packet(s, &opkt, pkt, 0);
2958 if(ret<=0) //FIXME cleanup needed for ret<0 ?
2961 ret= s->oformat->write_packet(s, &opkt);
2963 av_free_packet(&opkt);
2968 if(url_ferror(s->pb))
2969 return url_ferror(s->pb);
2973 int av_write_trailer(AVFormatContext *s)
2979 ret= av_interleave_packet(s, &pkt, NULL, 1);
2980 if(ret<0) //FIXME cleanup needed for ret<0 ?
2985 ret= s->oformat->write_packet(s, &pkt);
2987 av_free_packet(&pkt);
2991 if(url_ferror(s->pb))
2995 if(s->oformat->write_trailer)
2996 ret = s->oformat->write_trailer(s);
2999 ret=url_ferror(s->pb);
3000 for(i=0;i<s->nb_streams;i++) {
3001 av_freep(&s->streams[i]->priv_data);
3002 av_freep(&s->streams[i]->index_entries);
3004 av_freep(&s->priv_data);
3008 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3011 AVProgram *program=NULL;
3014 if (idx >= ac->nb_streams) {
3015 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3019 for(i=0; i<ac->nb_programs; i++){
3020 if(ac->programs[i]->id != progid)
3022 program = ac->programs[i];
3023 for(j=0; j<program->nb_stream_indexes; j++)
3024 if(program->stream_index[j] == idx)
3027 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3030 program->stream_index = tmp;
3031 program->stream_index[program->nb_stream_indexes++] = idx;
3036 static void print_fps(double d, const char *postfix){
3037 uint64_t v= lrintf(d*100);
3038 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3039 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3040 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3043 static void dump_metadata(void *ctx, AVMetadata *m, const char *indent)
3045 if(m && !(m->count == 1 && av_metadata_get(m, "language", NULL, 0))){
3046 AVMetadataTag *tag=NULL;
3048 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3049 while((tag=av_metadata_get(m, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
3050 if(strcmp("language", tag->key))
3051 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tag->value);
3056 /* "user interface" functions */
3057 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3060 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3061 AVStream *st = ic->streams[i];
3062 int g = av_gcd(st->time_base.num, st->time_base.den);
3063 AVMetadataTag *lang = av_metadata_get(st->metadata, "language", NULL, 0);
3064 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3065 av_log(NULL, AV_LOG_INFO, " Stream #%d.%d", index, i);
3066 /* the pid is an important information, so we display it */
3067 /* XXX: add a generic system */
3068 if (flags & AVFMT_SHOW_IDS)
3069 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3071 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3072 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3073 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3074 if (st->sample_aspect_ratio.num && // default
3075 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3076 AVRational display_aspect_ratio;
3077 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3078 st->codec->width*st->sample_aspect_ratio.num,
3079 st->codec->height*st->sample_aspect_ratio.den,
3081 av_log(NULL, AV_LOG_INFO, ", PAR %d:%d DAR %d:%d",
3082 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3083 display_aspect_ratio.num, display_aspect_ratio.den);
3085 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3086 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3087 print_fps(av_q2d(st->avg_frame_rate), "fps");
3088 if(st->r_frame_rate.den && st->r_frame_rate.num)
3089 print_fps(av_q2d(st->r_frame_rate), "tbr");
3090 if(st->time_base.den && st->time_base.num)
3091 print_fps(1/av_q2d(st->time_base), "tbn");
3092 if(st->codec->time_base.den && st->codec->time_base.num)
3093 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3095 av_log(NULL, AV_LOG_INFO, "\n");
3096 dump_metadata(NULL, st->metadata, " ");
3099 void dump_format(AVFormatContext *ic,
3105 uint8_t *printed = av_mallocz(ic->nb_streams);
3106 if (ic->nb_streams && !printed)
3109 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3110 is_output ? "Output" : "Input",
3112 is_output ? ic->oformat->name : ic->iformat->name,
3113 is_output ? "to" : "from", url);
3114 dump_metadata(NULL, ic->metadata, " ");
3116 av_log(NULL, AV_LOG_INFO, " Duration: ");
3117 if (ic->duration != AV_NOPTS_VALUE) {
3118 int hours, mins, secs, us;
3119 secs = ic->duration / AV_TIME_BASE;
3120 us = ic->duration % AV_TIME_BASE;
3125 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3126 (100 * us) / AV_TIME_BASE);
3128 av_log(NULL, AV_LOG_INFO, "N/A");
3130 if (ic->start_time != AV_NOPTS_VALUE) {
3132 av_log(NULL, AV_LOG_INFO, ", start: ");
3133 secs = ic->start_time / AV_TIME_BASE;
3134 us = abs(ic->start_time % AV_TIME_BASE);
3135 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3136 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3138 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3140 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3142 av_log(NULL, AV_LOG_INFO, "N/A");
3144 av_log(NULL, AV_LOG_INFO, "\n");
3146 for (i = 0; i < ic->nb_chapters; i++) {
3147 AVChapter *ch = ic->chapters[i];
3148 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3149 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3150 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3152 dump_metadata(NULL, ch->metadata, " ");
3154 if(ic->nb_programs) {
3155 int j, k, total = 0;
3156 for(j=0; j<ic->nb_programs; j++) {
3157 AVMetadataTag *name = av_metadata_get(ic->programs[j]->metadata,
3159 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3160 name ? name->value : "");
3161 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3162 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3163 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3164 printed[ic->programs[j]->stream_index[k]] = 1;
3166 total += ic->programs[j]->nb_stream_indexes;
3168 if (total < ic->nb_streams)
3169 av_log(NULL, AV_LOG_INFO, " No Program\n");
3171 for(i=0;i<ic->nb_streams;i++)
3173 dump_stream_format(ic, i, index, is_output);
3178 #if LIBAVFORMAT_VERSION_MAJOR < 53
3179 #include "libavcore/parseutils.h"
3181 int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
3183 return av_parse_video_size(width_ptr, height_ptr, str);
3186 int parse_frame_rate(int *frame_rate_num, int *frame_rate_den, const char *arg)
3188 AVRational frame_rate;
3189 int ret = av_parse_video_rate(&frame_rate, arg);
3190 *frame_rate_num= frame_rate.num;
3191 *frame_rate_den= frame_rate.den;
3196 int64_t av_gettime(void)
3199 gettimeofday(&tv,NULL);
3200 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3203 uint64_t ff_ntp_time(void)
3205 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3208 int64_t parse_date(const char *datestr, int duration)
3214 static const char * const date_fmt[] = {
3218 static const char * const time_fmt[] = {
3228 time_t now = time(0);
3230 len = strlen(datestr);
3232 lastch = datestr[len - 1];
3235 is_utc = (lastch == 'z' || lastch == 'Z');
3237 memset(&dt, 0, sizeof(dt));
3242 if (!strncasecmp(datestr, "now", len))
3243 return (int64_t) now * 1000000;
3245 /* parse the year-month-day part */
3246 for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
3247 q = small_strptime(p, date_fmt[i], &dt);
3253 /* if the year-month-day part is missing, then take the
3254 * current year-month-day time */
3259 dt = *localtime(&now);
3261 dt.tm_hour = dt.tm_min = dt.tm_sec = 0;
3266 if (*p == 'T' || *p == 't' || *p == ' ')
3269 /* parse the hour-minute-second part */
3270 for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
3271 q = small_strptime(p, time_fmt[i], &dt);
3277 /* parse datestr as a duration */
3282 /* parse datestr as HH:MM:SS */
3283 q = small_strptime(p, time_fmt[0], &dt);
3285 /* parse datestr as S+ */
3286 dt.tm_sec = strtol(p, (char **)&q, 10);
3288 /* the parsing didn't succeed */
3295 /* Now we have all the fields that we can get */
3301 t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
3303 dt.tm_isdst = -1; /* unknown */
3313 /* parse the .m... part */
3317 for (val = 0, n = 100000; n >= 1; n /= 10, q++) {
3320 val += n * (*q - '0');
3324 return negative ? -t : t;
3327 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3337 while (*p != '\0' && *p != '=' && *p != '&') {
3338 if ((q - tag) < sizeof(tag) - 1)
3346 while (*p != '&' && *p != '\0') {
3347 if ((q - arg) < arg_size - 1) {
3357 if (!strcmp(tag, tag1))
3366 int av_get_frame_filename(char *buf, int buf_size,
3367 const char *path, int number)
3370 char *q, buf1[20], c;
3371 int nd, len, percentd_found;
3383 while (isdigit(*p)) {
3384 nd = nd * 10 + *p++ - '0';
3387 } while (isdigit(c));
3396 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3398 if ((q - buf + len) > buf_size - 1)
3400 memcpy(q, buf1, len);
3408 if ((q - buf) < buf_size - 1)
3412 if (!percentd_found)
3421 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3425 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3427 for(i=0;i<size;i+=16) {
3434 PRINT(" %02x", buf[i+j]);
3439 for(j=0;j<len;j++) {
3441 if (c < ' ' || c > '~')
3450 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3452 hex_dump_internal(NULL, f, 0, buf, size);
3455 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3457 hex_dump_internal(avcl, NULL, level, buf, size);
3460 //FIXME needs to know the time_base
3461 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
3464 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3465 PRINT("stream #%d:\n", pkt->stream_index);
3466 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3467 PRINT(" duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
3468 /* DTS is _always_ valid after av_read_frame() */
3470 if (pkt->dts == AV_NOPTS_VALUE)
3473 PRINT("%0.3f", (double)pkt->dts / AV_TIME_BASE);
3474 /* PTS may not be known if B-frames are present. */
3476 if (pkt->pts == AV_NOPTS_VALUE)
3479 PRINT("%0.3f", (double)pkt->pts / AV_TIME_BASE);
3481 PRINT(" size=%d\n", pkt->size);
3484 av_hex_dump(f, pkt->data, pkt->size);
3487 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3489 pkt_dump_internal(NULL, f, 0, pkt, dump_payload);
3492 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3494 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload);
3497 #if LIBAVFORMAT_VERSION_MAJOR < 53
3498 attribute_deprecated
3499 void ff_url_split(char *proto, int proto_size,
3500 char *authorization, int authorization_size,
3501 char *hostname, int hostname_size,
3503 char *path, int path_size,
3506 av_url_split(proto, proto_size,
3507 authorization, authorization_size,
3508 hostname, hostname_size,
3515 void av_url_split(char *proto, int proto_size,
3516 char *authorization, int authorization_size,
3517 char *hostname, int hostname_size,
3519 char *path, int path_size,
3522 const char *p, *ls, *at, *col, *brk;
3524 if (port_ptr) *port_ptr = -1;
3525 if (proto_size > 0) proto[0] = 0;
3526 if (authorization_size > 0) authorization[0] = 0;
3527 if (hostname_size > 0) hostname[0] = 0;
3528 if (path_size > 0) path[0] = 0;
3530 /* parse protocol */
3531 if ((p = strchr(url, ':'))) {
3532 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3537 /* no protocol means plain filename */
3538 av_strlcpy(path, url, path_size);
3542 /* separate path from hostname */
3543 ls = strchr(p, '/');
3545 ls = strchr(p, '?');
3547 av_strlcpy(path, ls, path_size);
3549 ls = &p[strlen(p)]; // XXX
3551 /* the rest is hostname, use that to parse auth/port */
3553 /* authorization (user[:pass]@hostname) */
3554 if ((at = strchr(p, '@')) && at < ls) {
3555 av_strlcpy(authorization, p,
3556 FFMIN(authorization_size, at + 1 - p));
3557 p = at + 1; /* skip '@' */
3560 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3562 av_strlcpy(hostname, p + 1,
3563 FFMIN(hostname_size, brk - p));
3564 if (brk[1] == ':' && port_ptr)
3565 *port_ptr = atoi(brk + 2);
3566 } else if ((col = strchr(p, ':')) && col < ls) {
3567 av_strlcpy(hostname, p,
3568 FFMIN(col + 1 - p, hostname_size));
3569 if (port_ptr) *port_ptr = atoi(col + 1);
3571 av_strlcpy(hostname, p,
3572 FFMIN(ls + 1 - p, hostname_size));
3576 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3579 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3582 'C', 'D', 'E', 'F' };
3583 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3586 'c', 'd', 'e', 'f' };
3587 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3589 for(i = 0; i < s; i++) {
3590 buff[i * 2] = hex_table[src[i] >> 4];
3591 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3597 int ff_hex_to_data(uint8_t *data, const char *p)
3604 p += strspn(p, SPACE_CHARS);
3607 c = toupper((unsigned char) *p++);
3608 if (c >= '0' && c <= '9')
3610 else if (c >= 'A' && c <= 'F')
3625 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3626 unsigned int pts_num, unsigned int pts_den)
3628 s->pts_wrap_bits = pts_wrap_bits;
3630 if(av_reduce(&s->time_base.num, &s->time_base.den, pts_num, pts_den, INT_MAX)){
3631 if(s->time_base.num != pts_num)
3632 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/s->time_base.num);
3634 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3636 if(!s->time_base.num || !s->time_base.den)
3637 s->time_base.num= s->time_base.den= 0;
3640 int ff_url_join(char *str, int size, const char *proto,
3641 const char *authorization, const char *hostname,
3642 int port, const char *fmt, ...)
3645 struct addrinfo hints, *ai;
3650 av_strlcatf(str, size, "%s://", proto);
3651 if (authorization && authorization[0])
3652 av_strlcatf(str, size, "%s@", authorization);
3653 #if CONFIG_NETWORK && defined(AF_INET6)
3654 /* Determine if hostname is a numerical IPv6 address,
3655 * properly escape it within [] in that case. */
3656 memset(&hints, 0, sizeof(hints));
3657 hints.ai_flags = AI_NUMERICHOST;
3658 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
3659 if (ai->ai_family == AF_INET6) {
3660 av_strlcat(str, "[", size);
3661 av_strlcat(str, hostname, size);
3662 av_strlcat(str, "]", size);
3664 av_strlcat(str, hostname, size);
3669 /* Not an IPv6 address, just output the plain string. */
3670 av_strlcat(str, hostname, size);
3673 av_strlcatf(str, size, ":%d", port);
3676 int len = strlen(str);
3679 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
3685 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
3686 AVFormatContext *src)
3691 local_pkt.stream_index = dst_stream;
3692 if (pkt->pts != AV_NOPTS_VALUE)
3693 local_pkt.pts = av_rescale_q(pkt->pts,
3694 src->streams[pkt->stream_index]->time_base,
3695 dst->streams[dst_stream]->time_base);
3696 if (pkt->dts != AV_NOPTS_VALUE)
3697 local_pkt.dts = av_rescale_q(pkt->dts,
3698 src->streams[pkt->stream_index]->time_base,
3699 dst->streams[dst_stream]->time_base);
3700 return av_write_frame(dst, &local_pkt);
3703 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3706 const char *ptr = str;
3708 /* Parse key=value pairs. */
3711 char *dest = NULL, *dest_end;
3712 int key_len, dest_len = 0;
3714 /* Skip whitespace and potential commas. */
3715 while (*ptr && (isspace(*ptr) || *ptr == ','))
3722 if (!(ptr = strchr(key, '=')))
3725 key_len = ptr - key;
3727 callback_get_buf(context, key, key_len, &dest, &dest_len);
3728 dest_end = dest + dest_len - 1;
3732 while (*ptr && *ptr != '\"') {
3736 if (dest && dest < dest_end)
3740 if (dest && dest < dest_end)
3748 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
3749 if (dest && dest < dest_end)