2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/dict.h"
33 #include "libavutil/pixdesc.h"
36 #include "libavutil/avassert.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/parseutils.h"
41 #include "audiointerleave.h"
55 * various utility functions for use within FFmpeg
58 unsigned avformat_version(void)
60 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
61 return LIBAVFORMAT_VERSION_INT;
64 const char *avformat_configuration(void)
66 return FFMPEG_CONFIGURATION;
69 const char *avformat_license(void)
71 #define LICENSE_PREFIX "libavformat license: "
72 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
75 /* fraction handling */
78 * f = val + (num / den) + 0.5.
80 * 'num' is normalized so that it is such as 0 <= num < den.
82 * @param f fractional number
83 * @param val integer value
84 * @param num must be >= 0
85 * @param den must be >= 1
87 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
100 * Fractional addition to f: f = f + (incr / f->den).
102 * @param f fractional number
103 * @param incr increment, can be positive or negative
105 static void frac_add(AVFrac *f, int64_t incr)
118 } else if (num >= den) {
125 /** head of registered input format linked list */
126 static AVInputFormat *first_iformat = NULL;
127 /** head of registered output format linked list */
128 static AVOutputFormat *first_oformat = NULL;
130 AVInputFormat *av_iformat_next(AVInputFormat *f)
132 if(f) return f->next;
133 else return first_iformat;
136 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
138 if(f) return f->next;
139 else return first_oformat;
142 void av_register_input_format(AVInputFormat *format)
146 while (*p != NULL) p = &(*p)->next;
151 void av_register_output_format(AVOutputFormat *format)
155 while (*p != NULL) p = &(*p)->next;
160 int av_match_ext(const char *filename, const char *extensions)
168 ext = strrchr(filename, '.');
174 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
177 if (!av_strcasecmp(ext1, ext))
187 static int match_format(const char *name, const char *names)
195 namelen = strlen(name);
196 while ((p = strchr(names, ','))) {
197 len = FFMAX(p - names, namelen);
198 if (!av_strncasecmp(name, names, len))
202 return !av_strcasecmp(name, names);
205 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
206 const char *mime_type)
208 AVOutputFormat *fmt = NULL, *fmt_found;
209 int score_max, score;
211 /* specific test for image sequences */
212 #if CONFIG_IMAGE2_MUXER
213 if (!short_name && filename &&
214 av_filename_number_test(filename) &&
215 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
216 return av_guess_format("image2", NULL, NULL);
219 /* Find the proper file type. */
222 while ((fmt = av_oformat_next(fmt))) {
224 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
226 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
228 if (filename && fmt->extensions &&
229 av_match_ext(filename, fmt->extensions)) {
232 if (score > score_max) {
240 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
241 const char *filename, const char *mime_type, enum AVMediaType type){
242 if(type == AVMEDIA_TYPE_VIDEO){
243 enum CodecID codec_id= CODEC_ID_NONE;
245 #if CONFIG_IMAGE2_MUXER
246 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
247 codec_id= ff_guess_image2_codec(filename);
250 if(codec_id == CODEC_ID_NONE)
251 codec_id= fmt->video_codec;
253 }else if(type == AVMEDIA_TYPE_AUDIO)
254 return fmt->audio_codec;
255 else if (type == AVMEDIA_TYPE_SUBTITLE)
256 return fmt->subtitle_codec;
258 return CODEC_ID_NONE;
261 AVInputFormat *av_find_input_format(const char *short_name)
263 AVInputFormat *fmt = NULL;
264 while ((fmt = av_iformat_next(fmt))) {
265 if (match_format(short_name, fmt->name))
271 int ffio_limit(AVIOContext *s, int size)
274 int64_t remaining= s->maxsize - avio_tell(s);
275 if(remaining < size){
276 int64_t newsize= avio_size(s);
277 if(!s->maxsize || s->maxsize<newsize)
278 s->maxsize= newsize - !newsize;
279 remaining= s->maxsize - avio_tell(s);
280 remaining= FFMAX(remaining, 0);
283 if(s->maxsize>=0 && remaining+1 < size){
284 av_log(0, AV_LOG_ERROR, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
291 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
294 size= ffio_limit(s, size);
296 ret= av_new_packet(pkt, size);
301 pkt->pos= avio_tell(s);
303 ret= avio_read(s, pkt->data, size);
307 av_shrink_packet(pkt, ret);
312 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
317 return av_get_packet(s, pkt, size);
318 old_size = pkt->size;
319 ret = av_grow_packet(pkt, size);
322 ret = avio_read(s, pkt->data + old_size, size);
323 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
328 int av_filename_number_test(const char *filename)
331 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
334 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
336 AVProbeData lpd = *pd;
337 AVInputFormat *fmt1 = NULL, *fmt;
338 int score, nodat = 0, score_max=0;
340 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
341 int id3len = ff_id3v2_tag_len(lpd.buf);
342 if (lpd.buf_size > id3len + 16) {
344 lpd.buf_size -= id3len;
350 while ((fmt1 = av_iformat_next(fmt1))) {
351 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
354 if (fmt1->read_probe) {
355 score = fmt1->read_probe(&lpd);
356 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
357 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
358 } else if (fmt1->extensions) {
359 if (av_match_ext(lpd.filename, fmt1->extensions)) {
363 if (score > score_max) {
366 }else if (score == score_max)
369 *score_ret= score_max;
374 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
377 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
378 if(score_ret > *score_max){
379 *score_max= score_ret;
385 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
387 return av_probe_input_format2(pd, is_opened, &score);
390 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
392 static const struct {
393 const char *name; enum CodecID id; enum AVMediaType type;
395 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
396 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
397 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
398 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
399 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
400 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
401 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
402 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
403 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
407 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
411 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
412 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
413 for (i = 0; fmt_id_type[i].name; i++) {
414 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
415 st->codec->codec_id = fmt_id_type[i].id;
416 st->codec->codec_type = fmt_id_type[i].type;
424 /************************************************************/
425 /* input media file */
427 int av_demuxer_open(AVFormatContext *ic){
430 if (ic->iformat->read_header) {
431 err = ic->iformat->read_header(ic);
436 if (ic->pb && !ic->data_offset)
437 ic->data_offset = avio_tell(ic->pb);
443 /** size of probe buffer, for guessing file type from file contents */
444 #define PROBE_BUF_MIN 2048
445 #define PROBE_BUF_MAX (1<<20)
447 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
448 const char *filename, void *logctx,
449 unsigned int offset, unsigned int max_probe_size)
451 AVProbeData pd = { filename ? filename : "", NULL, -offset };
452 unsigned char *buf = NULL;
453 int ret = 0, probe_size;
455 if (!max_probe_size) {
456 max_probe_size = PROBE_BUF_MAX;
457 } else if (max_probe_size > PROBE_BUF_MAX) {
458 max_probe_size = PROBE_BUF_MAX;
459 } else if (max_probe_size < PROBE_BUF_MIN) {
460 return AVERROR(EINVAL);
463 if (offset >= max_probe_size) {
464 return AVERROR(EINVAL);
467 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
468 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
469 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
470 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
473 if (probe_size < offset) {
477 /* read probe data */
478 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
481 return AVERROR(ENOMEM);
484 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
485 /* fail if error was not end of file, otherwise, lower score */
486 if (ret != AVERROR_EOF) {
491 ret = 0; /* error was end of file, nothing read */
494 pd.buf = &buf[offset];
496 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
498 /* guess file format */
499 *fmt = av_probe_input_format2(&pd, 1, &score);
501 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
502 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
504 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
510 return AVERROR_INVALIDDATA;
513 /* rewind. reuse probe buffer to avoid seeking */
514 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
520 /* open input file and probe the format if necessary */
521 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
524 AVProbeData pd = {filename, NULL, 0};
527 s->flags |= AVFMT_FLAG_CUSTOM_IO;
529 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
530 else if (s->iformat->flags & AVFMT_NOFILE)
531 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
532 "will be ignored with AVFMT_NOFILE format.\n");
536 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
537 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
540 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ,
541 &s->interrupt_callback, options)) < 0)
545 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
548 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
550 AVFormatContext *s = *ps;
552 AVDictionary *tmp = NULL;
554 if (!s && !(s = avformat_alloc_context()))
555 return AVERROR(ENOMEM);
560 av_dict_copy(&tmp, *options, 0);
562 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
565 if ((ret = init_input(s, filename, &tmp)) < 0)
568 /* check filename in case an image number is expected */
569 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
570 if (!av_filename_number_test(filename)) {
571 ret = AVERROR(EINVAL);
576 s->duration = s->start_time = AV_NOPTS_VALUE;
577 av_strlcpy(s->filename, filename, sizeof(s->filename));
579 /* allocate private data */
580 if (s->iformat->priv_data_size > 0) {
581 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
582 ret = AVERROR(ENOMEM);
585 if (s->iformat->priv_class) {
586 *(const AVClass**)s->priv_data = s->iformat->priv_class;
587 av_opt_set_defaults(s->priv_data);
588 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
593 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
595 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC);
597 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
598 if ((ret = s->iformat->read_header(s)) < 0)
601 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
602 s->data_offset = avio_tell(s->pb);
604 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
607 av_dict_free(options);
615 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
617 avformat_free_context(s);
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]->request_probe <= 0){
652 s->raw_packet_buffer = pktl->next;
653 s->raw_packet_buffer_remaining_size += pkt->size;
660 ret= s->iformat->read_packet(s, pkt);
662 if (!pktl || ret == AVERROR(EAGAIN))
664 for (i = 0; i < s->nb_streams; i++)
665 if(s->streams[i]->request_probe > 0)
666 s->streams[i]->request_probe = -1;
670 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
671 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
672 av_log(s, AV_LOG_WARNING,
673 "Dropped corrupted packet (stream = %d)\n",
679 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
680 av_packet_merge_side_data(pkt);
682 if(pkt->stream_index >= (unsigned)s->nb_streams){
683 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
687 st= s->streams[pkt->stream_index];
689 switch(st->codec->codec_type){
690 case AVMEDIA_TYPE_VIDEO:
691 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
693 case AVMEDIA_TYPE_AUDIO:
694 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
696 case AVMEDIA_TYPE_SUBTITLE:
697 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
701 if(!pktl && st->request_probe <= 0)
704 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
705 s->raw_packet_buffer_remaining_size -= pkt->size;
707 if(st->request_probe>0){
708 AVProbeData *pd = &st->probe_data;
710 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
713 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
714 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
715 pd->buf_size += pkt->size;
716 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
718 end= s->raw_packet_buffer_remaining_size <= 0
719 || st->probe_packets<=0;
721 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
722 int score= set_codec_from_probe_data(s, st, pd);
723 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
727 st->request_probe= -1;
728 if(st->codec->codec_id != CODEC_ID_NONE){
729 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
731 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
738 /**********************************************************/
741 * Get the number of samples of an audio frame. Return -1 on error.
743 static int get_audio_frame_size(AVCodecContext *enc, int size)
747 if(enc->codec_id == CODEC_ID_VORBIS)
750 if (enc->frame_size <= 1) {
751 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
753 if (bits_per_sample) {
754 if (enc->channels == 0)
756 frame_size = (size << 3) / (bits_per_sample * enc->channels);
758 /* used for example by ADPCM codecs */
759 if (enc->bit_rate == 0)
761 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
764 frame_size = enc->frame_size;
771 * Return the frame duration in seconds. Return 0 if not available.
773 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
774 AVCodecParserContext *pc, AVPacket *pkt)
780 switch(st->codec->codec_type) {
781 case AVMEDIA_TYPE_VIDEO:
782 if (st->r_frame_rate.num && !pc) {
783 *pnum = st->r_frame_rate.den;
784 *pden = st->r_frame_rate.num;
785 } else if(st->time_base.num*1000LL > st->time_base.den) {
786 *pnum = st->time_base.num;
787 *pden = st->time_base.den;
788 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
789 *pnum = st->codec->time_base.num;
790 *pden = st->codec->time_base.den;
791 if (pc && pc->repeat_pict) {
792 *pnum = (*pnum) * (1 + pc->repeat_pict);
794 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
795 //Thus if we have no parser in such case leave duration undefined.
796 if(st->codec->ticks_per_frame>1 && !pc){
801 case AVMEDIA_TYPE_AUDIO:
802 frame_size = get_audio_frame_size(st->codec, pkt->size);
803 if (frame_size <= 0 || st->codec->sample_rate <= 0)
806 *pden = st->codec->sample_rate;
813 static int is_intra_only(AVCodecContext *enc){
814 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
816 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
817 switch(enc->codec_id){
819 case CODEC_ID_MJPEGB:
821 case CODEC_ID_PRORES:
822 case CODEC_ID_RAWVIDEO:
823 case CODEC_ID_DVVIDEO:
824 case CODEC_ID_HUFFYUV:
825 case CODEC_ID_FFVHUFF:
830 case CODEC_ID_JPEG2000:
838 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
839 int64_t dts, int64_t pts)
841 AVStream *st= s->streams[stream_index];
842 AVPacketList *pktl= s->packet_buffer;
844 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
847 st->first_dts= dts - st->cur_dts;
850 for(; pktl; pktl= pktl->next){
851 if(pktl->pkt.stream_index != stream_index)
853 //FIXME think more about this check
854 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
855 pktl->pkt.pts += st->first_dts;
857 if(pktl->pkt.dts != AV_NOPTS_VALUE)
858 pktl->pkt.dts += st->first_dts;
860 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
861 st->start_time= pktl->pkt.pts;
863 if (st->start_time == AV_NOPTS_VALUE)
864 st->start_time = pts;
867 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
869 AVPacketList *pktl= s->packet_buffer;
872 if(st->first_dts != AV_NOPTS_VALUE){
873 cur_dts= st->first_dts;
874 for(; pktl; pktl= pktl->next){
875 if(pktl->pkt.stream_index == pkt->stream_index){
876 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
878 cur_dts -= pkt->duration;
881 pktl= s->packet_buffer;
882 st->first_dts = cur_dts;
883 }else if(st->cur_dts)
886 for(; pktl; pktl= pktl->next){
887 if(pktl->pkt.stream_index != pkt->stream_index)
889 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
890 && !pktl->pkt.duration){
891 pktl->pkt.dts= cur_dts;
892 if(!st->codec->has_b_frames)
893 pktl->pkt.pts= cur_dts;
894 cur_dts += pkt->duration;
895 pktl->pkt.duration= pkt->duration;
899 if(st->first_dts == AV_NOPTS_VALUE)
900 st->cur_dts= cur_dts;
903 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
904 AVCodecParserContext *pc, AVPacket *pkt)
906 int num, den, presentation_delayed, delay, i;
909 if (s->flags & AVFMT_FLAG_NOFILLIN)
912 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
913 pkt->dts= AV_NOPTS_VALUE;
915 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
916 //FIXME Set low_delay = 0 when has_b_frames = 1
917 st->codec->has_b_frames = 1;
919 /* do we have a video B-frame ? */
920 delay= st->codec->has_b_frames;
921 presentation_delayed = 0;
923 /* XXX: need has_b_frame, but cannot get it if the codec is
926 pc && pc->pict_type != AV_PICTURE_TYPE_B)
927 presentation_delayed = 1;
929 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > pkt->pts && st->pts_wrap_bits<63){
930 pkt->dts -= 1LL<<st->pts_wrap_bits;
933 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
934 // we take the conservative approach and discard both
935 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
936 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
937 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
938 pkt->dts= AV_NOPTS_VALUE;
941 if (pkt->duration == 0) {
942 compute_frame_duration(&num, &den, st, pc, pkt);
944 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
946 if(pkt->duration != 0 && s->packet_buffer)
947 update_initial_durations(s, st, pkt);
951 /* correct timestamps with byte offset if demuxers only have timestamps
952 on packet boundaries */
953 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
954 /* this will estimate bitrate based on this frame's duration and size */
955 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
956 if(pkt->pts != AV_NOPTS_VALUE)
958 if(pkt->dts != AV_NOPTS_VALUE)
962 if (pc && pc->dts_sync_point >= 0) {
963 // we have synchronization info from the parser
964 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
966 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
967 if (pkt->dts != AV_NOPTS_VALUE) {
968 // got DTS from the stream, update reference timestamp
969 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
970 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
971 } else if (st->reference_dts != AV_NOPTS_VALUE) {
972 // compute DTS based on reference timestamp
973 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
974 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
976 if (pc->dts_sync_point > 0)
977 st->reference_dts = pkt->dts; // new reference
981 /* This may be redundant, but it should not hurt. */
982 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
983 presentation_delayed = 1;
985 // 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);
986 /* interpolate PTS and DTS if they are not present */
987 //We skip H264 currently because delay and has_b_frames are not reliably set
988 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
989 if (presentation_delayed) {
990 /* DTS = decompression timestamp */
991 /* PTS = presentation timestamp */
992 if (pkt->dts == AV_NOPTS_VALUE)
993 pkt->dts = st->last_IP_pts;
994 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
995 if (pkt->dts == AV_NOPTS_VALUE)
996 pkt->dts = st->cur_dts;
998 /* this is tricky: the dts must be incremented by the duration
999 of the frame we are displaying, i.e. the last I- or P-frame */
1000 if (st->last_IP_duration == 0)
1001 st->last_IP_duration = pkt->duration;
1002 if(pkt->dts != AV_NOPTS_VALUE)
1003 st->cur_dts = pkt->dts + st->last_IP_duration;
1004 st->last_IP_duration = pkt->duration;
1005 st->last_IP_pts= pkt->pts;
1006 /* cannot compute PTS if not present (we can compute it only
1007 by knowing the future */
1008 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
1009 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
1010 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
1011 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1012 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
1013 pkt->pts += pkt->duration;
1014 // 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);
1018 /* presentation is not delayed : PTS and DTS are the same */
1019 if(pkt->pts == AV_NOPTS_VALUE)
1020 pkt->pts = pkt->dts;
1021 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1022 if(pkt->pts == AV_NOPTS_VALUE)
1023 pkt->pts = st->cur_dts;
1024 pkt->dts = pkt->pts;
1025 if(pkt->pts != AV_NOPTS_VALUE)
1026 st->cur_dts = pkt->pts + pkt->duration;
1030 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1031 st->pts_buffer[0]= pkt->pts;
1032 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1033 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1034 if(pkt->dts == AV_NOPTS_VALUE)
1035 pkt->dts= st->pts_buffer[0];
1036 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1037 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1039 if(pkt->dts > st->cur_dts)
1040 st->cur_dts = pkt->dts;
1043 // 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);
1046 if(is_intra_only(st->codec))
1047 pkt->flags |= AV_PKT_FLAG_KEY;
1050 /* keyframe computation */
1051 if (pc->key_frame == 1)
1052 pkt->flags |= AV_PKT_FLAG_KEY;
1053 else if (pc->key_frame == -1 && pc->pict_type == AV_PICTURE_TYPE_I)
1054 pkt->flags |= AV_PKT_FLAG_KEY;
1057 pkt->convergence_duration = pc->convergence_duration;
1061 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1066 av_init_packet(pkt);
1069 /* select current input stream component */
1072 if (!st->need_parsing || !st->parser) {
1073 /* no parsing needed: we just output the packet as is */
1074 /* raw data support */
1076 st->cur_pkt.data= NULL;
1077 st->cur_pkt.side_data_elems = 0;
1078 st->cur_pkt.side_data = NULL;
1079 compute_pkt_fields(s, st, NULL, pkt);
1081 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1082 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1083 ff_reduce_index(s, st->index);
1084 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1087 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1088 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1089 st->cur_ptr, st->cur_len,
1090 st->cur_pkt.pts, st->cur_pkt.dts,
1092 st->cur_pkt.pts = AV_NOPTS_VALUE;
1093 st->cur_pkt.dts = AV_NOPTS_VALUE;
1094 /* increment read pointer */
1098 /* return packet if any */
1102 pkt->stream_index = st->index;
1103 pkt->pts = st->parser->pts;
1104 pkt->dts = st->parser->dts;
1105 pkt->pos = st->parser->pos;
1106 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1108 pkt->destruct= st->cur_pkt.destruct;
1109 st->cur_pkt.destruct= NULL;
1110 st->cur_pkt.data = NULL;
1111 assert(st->cur_len == 0);
1113 pkt->destruct = NULL;
1115 compute_pkt_fields(s, st, st->parser, pkt);
1117 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1118 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->pos : st->parser->frame_offset;
1119 ff_reduce_index(s, st->index);
1120 av_add_index_entry(st, pos, pkt->dts,
1121 0, 0, AVINDEX_KEYFRAME);
1128 av_free_packet(&st->cur_pkt);
1133 /* read next packet */
1134 ret = av_read_packet(s, &cur_pkt);
1136 if (ret == AVERROR(EAGAIN))
1138 /* return the last frames, if any */
1139 for(i = 0; i < s->nb_streams; i++) {
1141 if (st->parser && st->need_parsing) {
1142 av_parser_parse2(st->parser, st->codec,
1143 &pkt->data, &pkt->size,
1145 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1151 /* no more packets: really terminate parsing */
1154 st = s->streams[cur_pkt.stream_index];
1155 st->cur_pkt= cur_pkt;
1157 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1158 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1159 st->cur_pkt.pts < st->cur_pkt.dts){
1160 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1161 st->cur_pkt.stream_index,
1165 // av_free_packet(&st->cur_pkt);
1169 if(s->debug & FF_FDEBUG_TS)
1170 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1171 st->cur_pkt.stream_index,
1175 st->cur_pkt.duration,
1179 st->cur_ptr = st->cur_pkt.data;
1180 st->cur_len = st->cur_pkt.size;
1181 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1182 st->parser = av_parser_init(st->codec->codec_id);
1184 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1185 "%s, packets or times may be invalid.\n",
1186 avcodec_get_name(st->codec->codec_id));
1187 /* no parser available: just output the raw packets */
1188 st->need_parsing = AVSTREAM_PARSE_NONE;
1189 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1190 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1191 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1192 st->parser->flags |= PARSER_FLAG_ONCE;
1197 if(s->debug & FF_FDEBUG_TS)
1198 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1209 static int read_from_packet_buffer(AVFormatContext *s, AVPacket *pkt)
1211 AVPacketList *pktl = s->packet_buffer;
1214 s->packet_buffer = pktl->next;
1219 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1221 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1225 return s->packet_buffer ? read_from_packet_buffer(s, pkt) :
1226 read_frame_internal(s, pkt);
1230 AVPacketList *pktl = s->packet_buffer;
1233 AVPacket *next_pkt = &pktl->pkt;
1235 if (next_pkt->dts != AV_NOPTS_VALUE) {
1236 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1237 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1238 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1239 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0) &&
1240 av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1241 next_pkt->pts = pktl->pkt.dts;
1245 pktl = s->packet_buffer;
1248 /* read packet from packet buffer, if there is data */
1249 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1250 next_pkt->dts != AV_NOPTS_VALUE && !eof))
1251 return read_from_packet_buffer(s, pkt);
1254 ret = read_frame_internal(s, pkt);
1256 if (pktl && ret != AVERROR(EAGAIN)) {
1263 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1264 &s->packet_buffer_end)) < 0)
1265 return AVERROR(ENOMEM);
1269 /* XXX: suppress the packet queue */
1270 static void flush_packet_queue(AVFormatContext *s)
1275 pktl = s->packet_buffer;
1278 s->packet_buffer = pktl->next;
1279 av_free_packet(&pktl->pkt);
1282 while(s->raw_packet_buffer){
1283 pktl = s->raw_packet_buffer;
1284 s->raw_packet_buffer = pktl->next;
1285 av_free_packet(&pktl->pkt);
1288 s->packet_buffer_end=
1289 s->raw_packet_buffer_end= NULL;
1290 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1293 /*******************************************************/
1296 int av_find_default_stream_index(AVFormatContext *s)
1298 int first_audio_index = -1;
1302 if (s->nb_streams <= 0)
1304 for(i = 0; i < s->nb_streams; i++) {
1306 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1309 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1310 first_audio_index = i;
1312 return first_audio_index >= 0 ? first_audio_index : 0;
1316 * Flush the frame reader.
1318 void ff_read_frame_flush(AVFormatContext *s)
1323 flush_packet_queue(s);
1327 /* for each stream, reset read state */
1328 for(i = 0; i < s->nb_streams; i++) {
1332 av_parser_close(st->parser);
1334 av_free_packet(&st->cur_pkt);
1336 st->last_IP_pts = AV_NOPTS_VALUE;
1337 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = 0;
1338 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1339 st->reference_dts = AV_NOPTS_VALUE;
1344 st->probe_packets = MAX_PROBE_PACKETS;
1346 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1347 st->pts_buffer[j]= AV_NOPTS_VALUE;
1351 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1355 for(i = 0; i < s->nb_streams; i++) {
1356 AVStream *st = s->streams[i];
1358 st->cur_dts = av_rescale(timestamp,
1359 st->time_base.den * (int64_t)ref_st->time_base.num,
1360 st->time_base.num * (int64_t)ref_st->time_base.den);
1364 void ff_reduce_index(AVFormatContext *s, int stream_index)
1366 AVStream *st= s->streams[stream_index];
1367 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1369 if((unsigned)st->nb_index_entries >= max_entries){
1371 for(i=0; 2*i<st->nb_index_entries; i++)
1372 st->index_entries[i]= st->index_entries[2*i];
1373 st->nb_index_entries= i;
1377 int ff_add_index_entry(AVIndexEntry **index_entries,
1378 int *nb_index_entries,
1379 unsigned int *index_entries_allocated_size,
1380 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1382 AVIndexEntry *entries, *ie;
1385 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1388 entries = av_fast_realloc(*index_entries,
1389 index_entries_allocated_size,
1390 (*nb_index_entries + 1) *
1391 sizeof(AVIndexEntry));
1395 *index_entries= entries;
1397 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1400 index= (*nb_index_entries)++;
1401 ie= &entries[index];
1402 assert(index==0 || ie[-1].timestamp < timestamp);
1404 ie= &entries[index];
1405 if(ie->timestamp != timestamp){
1406 if(ie->timestamp <= timestamp)
1408 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1409 (*nb_index_entries)++;
1410 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1411 distance= ie->min_distance;
1415 ie->timestamp = timestamp;
1416 ie->min_distance= distance;
1423 int av_add_index_entry(AVStream *st,
1424 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1426 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1427 &st->index_entries_allocated_size, pos,
1428 timestamp, size, distance, flags);
1431 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1432 int64_t wanted_timestamp, int flags)
1440 //optimize appending index entries at the end
1441 if(b && entries[b-1].timestamp < wanted_timestamp)
1446 timestamp = entries[m].timestamp;
1447 if(timestamp >= wanted_timestamp)
1449 if(timestamp <= wanted_timestamp)
1452 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1454 if(!(flags & AVSEEK_FLAG_ANY)){
1455 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1456 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1465 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1468 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1469 wanted_timestamp, flags);
1472 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1474 AVInputFormat *avif= s->iformat;
1475 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1476 int64_t ts_min, ts_max, ts;
1481 if (stream_index < 0)
1484 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1487 ts_min= AV_NOPTS_VALUE;
1488 pos_limit= -1; //gcc falsely says it may be uninitialized
1490 st= s->streams[stream_index];
1491 if(st->index_entries){
1494 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()
1495 index= FFMAX(index, 0);
1496 e= &st->index_entries[index];
1498 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1500 ts_min= e->timestamp;
1501 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1507 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1508 assert(index < st->nb_index_entries);
1510 e= &st->index_entries[index];
1511 assert(e->timestamp >= target_ts);
1513 ts_max= e->timestamp;
1514 pos_limit= pos_max - e->min_distance;
1515 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1516 pos_max,pos_limit, ts_max);
1520 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1525 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1528 ff_read_frame_flush(s);
1529 ff_update_cur_dts(s, st, ts);
1534 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1535 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1536 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1537 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1540 int64_t start_pos, filesize;
1543 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1545 if(ts_min == AV_NOPTS_VALUE){
1546 pos_min = s->data_offset;
1547 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1548 if (ts_min == AV_NOPTS_VALUE)
1552 if(ts_min >= target_ts){
1557 if(ts_max == AV_NOPTS_VALUE){
1559 filesize = avio_size(s->pb);
1560 pos_max = filesize - 1;
1563 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1565 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1566 if (ts_max == AV_NOPTS_VALUE)
1570 int64_t tmp_pos= pos_max + 1;
1571 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1572 if(tmp_ts == AV_NOPTS_VALUE)
1576 if(tmp_pos >= filesize)
1582 if(ts_max <= target_ts){
1587 if(ts_min > ts_max){
1589 }else if(ts_min == ts_max){
1594 while (pos_min < pos_limit) {
1595 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1596 pos_min, pos_max, ts_min, ts_max);
1597 assert(pos_limit <= pos_max);
1600 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1601 // interpolate position (better than dichotomy)
1602 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1603 + pos_min - approximate_keyframe_distance;
1604 }else if(no_change==1){
1605 // bisection, if interpolation failed to change min or max pos last time
1606 pos = (pos_min + pos_limit)>>1;
1608 /* linear search if bisection failed, can only happen if there
1609 are very few or no keyframes between min/max */
1614 else if(pos > pos_limit)
1618 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1623 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1624 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1625 pos_limit, start_pos, no_change);
1626 if(ts == AV_NOPTS_VALUE){
1627 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1630 assert(ts != AV_NOPTS_VALUE);
1631 if (target_ts <= ts) {
1632 pos_limit = start_pos - 1;
1636 if (target_ts >= ts) {
1642 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1643 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1646 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1648 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1649 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1650 pos, ts_min, target_ts, ts_max);
1656 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1657 int64_t pos_min, pos_max;
1661 if (stream_index < 0)
1664 st= s->streams[stream_index];
1667 pos_min = s->data_offset;
1668 pos_max = avio_size(s->pb) - 1;
1670 if (pos < pos_min) pos= pos_min;
1671 else if(pos > pos_max) pos= pos_max;
1673 avio_seek(s->pb, pos, SEEK_SET);
1676 av_update_cur_dts(s, st, ts);
1681 static int seek_frame_generic(AVFormatContext *s,
1682 int stream_index, int64_t timestamp, int flags)
1689 st = s->streams[stream_index];
1691 index = av_index_search_timestamp(st, timestamp, flags);
1693 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1696 if(index < 0 || index==st->nb_index_entries-1){
1700 if(st->nb_index_entries){
1701 assert(st->index_entries);
1702 ie= &st->index_entries[st->nb_index_entries-1];
1703 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1705 ff_update_cur_dts(s, st, ie->timestamp);
1707 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1713 read_status = av_read_frame(s, &pkt);
1714 } while (read_status == AVERROR(EAGAIN));
1715 if (read_status < 0)
1717 av_free_packet(&pkt);
1718 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1719 if(pkt.flags & AV_PKT_FLAG_KEY)
1721 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1722 av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
1727 index = av_index_search_timestamp(st, timestamp, flags);
1732 ff_read_frame_flush(s);
1733 AV_NOWARN_DEPRECATED(
1734 if (s->iformat->read_seek){
1735 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1739 ie = &st->index_entries[index];
1740 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1742 ff_update_cur_dts(s, st, ie->timestamp);
1747 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1752 if (flags & AVSEEK_FLAG_BYTE) {
1753 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1755 ff_read_frame_flush(s);
1756 return seek_frame_byte(s, stream_index, timestamp, flags);
1759 if(stream_index < 0){
1760 stream_index= av_find_default_stream_index(s);
1761 if(stream_index < 0)
1764 st= s->streams[stream_index];
1765 /* timestamp for default must be expressed in AV_TIME_BASE units */
1766 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1769 /* first, we try the format specific seek */
1770 AV_NOWARN_DEPRECATED(
1771 if (s->iformat->read_seek) {
1772 ff_read_frame_flush(s);
1773 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1781 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1782 ff_read_frame_flush(s);
1783 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1784 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1785 ff_read_frame_flush(s);
1786 return seek_frame_generic(s, stream_index, timestamp, flags);
1792 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1794 if(min_ts > ts || max_ts < ts)
1797 if (s->iformat->read_seek2) {
1798 ff_read_frame_flush(s);
1799 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1802 if(s->iformat->read_timestamp){
1803 //try to seek via read_timestamp()
1806 //Fallback to old API if new is not implemented but old is
1807 //Note the old has somewat different sematics
1808 AV_NOWARN_DEPRECATED(
1809 if(s->iformat->read_seek || 1)
1810 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1813 // try some generic seek like seek_frame_generic() but with new ts semantics
1816 /*******************************************************/
1819 * Return TRUE if the stream has accurate duration in any stream.
1821 * @return TRUE if the stream has accurate duration for at least one component.
1823 static int has_duration(AVFormatContext *ic)
1827 if(ic->duration != AV_NOPTS_VALUE)
1830 for(i = 0;i < ic->nb_streams; i++) {
1831 st = ic->streams[i];
1832 if (st->duration != AV_NOPTS_VALUE)
1839 * Estimate the stream timings from the one of each components.
1841 * Also computes the global bitrate if possible.
1843 static void update_stream_timings(AVFormatContext *ic)
1845 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1846 int64_t duration, duration1, filesize;
1850 start_time = INT64_MAX;
1851 start_time_text = INT64_MAX;
1852 end_time = INT64_MIN;
1853 duration = INT64_MIN;
1854 for(i = 0;i < ic->nb_streams; i++) {
1855 st = ic->streams[i];
1856 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1857 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1858 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1859 if (start_time1 < start_time_text)
1860 start_time_text = start_time1;
1862 start_time = FFMIN(start_time, start_time1);
1863 if (st->duration != AV_NOPTS_VALUE) {
1864 end_time1 = start_time1
1865 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1866 end_time = FFMAX(end_time, end_time1);
1869 if (st->duration != AV_NOPTS_VALUE) {
1870 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1871 duration = FFMAX(duration, duration1);
1874 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
1875 start_time = start_time_text;
1876 if (start_time != INT64_MAX) {
1877 ic->start_time = start_time;
1878 if (end_time != INT64_MIN)
1879 duration = FFMAX(duration, end_time - start_time);
1881 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
1882 ic->duration = duration;
1884 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
1885 /* compute the bitrate */
1886 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
1887 (double)ic->duration;
1891 static void fill_all_stream_timings(AVFormatContext *ic)
1896 update_stream_timings(ic);
1897 for(i = 0;i < ic->nb_streams; i++) {
1898 st = ic->streams[i];
1899 if (st->start_time == AV_NOPTS_VALUE) {
1900 if(ic->start_time != AV_NOPTS_VALUE)
1901 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
1902 if(ic->duration != AV_NOPTS_VALUE)
1903 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
1908 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
1910 int64_t filesize, duration;
1914 /* if bit_rate is already set, we believe it */
1915 if (ic->bit_rate <= 0) {
1917 for(i=0;i<ic->nb_streams;i++) {
1918 st = ic->streams[i];
1919 if (st->codec->bit_rate > 0)
1920 bit_rate += st->codec->bit_rate;
1922 ic->bit_rate = bit_rate;
1925 /* if duration is already set, we believe it */
1926 if (ic->duration == AV_NOPTS_VALUE &&
1927 ic->bit_rate != 0) {
1928 filesize = ic->pb ? avio_size(ic->pb) : 0;
1930 for(i = 0; i < ic->nb_streams; i++) {
1931 st = ic->streams[i];
1932 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
1933 if (st->duration == AV_NOPTS_VALUE)
1934 st->duration = duration;
1940 #define DURATION_MAX_READ_SIZE 250000
1941 #define DURATION_MAX_RETRY 3
1943 /* only usable for MPEG-PS streams */
1944 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
1946 AVPacket pkt1, *pkt = &pkt1;
1948 int read_size, i, ret;
1950 int64_t filesize, offset, duration;
1955 /* flush packet queue */
1956 flush_packet_queue(ic);
1958 for (i=0; i<ic->nb_streams; i++) {
1959 st = ic->streams[i];
1960 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
1961 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
1964 av_parser_close(st->parser);
1966 av_free_packet(&st->cur_pkt);
1970 /* estimate the end time (duration) */
1971 /* XXX: may need to support wrapping */
1972 filesize = ic->pb ? avio_size(ic->pb) : 0;
1973 end_time = AV_NOPTS_VALUE;
1975 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
1979 avio_seek(ic->pb, offset, SEEK_SET);
1982 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
1986 ret = av_read_packet(ic, pkt);
1987 } while(ret == AVERROR(EAGAIN));
1990 read_size += pkt->size;
1991 st = ic->streams[pkt->stream_index];
1992 if (pkt->pts != AV_NOPTS_VALUE &&
1993 (st->start_time != AV_NOPTS_VALUE ||
1994 st->first_dts != AV_NOPTS_VALUE)) {
1995 duration = end_time = pkt->pts;
1996 if (st->start_time != AV_NOPTS_VALUE)
1997 duration -= st->start_time;
1999 duration -= st->first_dts;
2001 duration += 1LL<<st->pts_wrap_bits;
2003 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2004 st->duration = duration;
2007 av_free_packet(pkt);
2009 }while( end_time==AV_NOPTS_VALUE
2010 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2011 && ++retry <= DURATION_MAX_RETRY);
2013 fill_all_stream_timings(ic);
2015 avio_seek(ic->pb, old_offset, SEEK_SET);
2016 for (i=0; i<ic->nb_streams; i++) {
2018 st->cur_dts= st->first_dts;
2019 st->last_IP_pts = AV_NOPTS_VALUE;
2020 st->reference_dts = AV_NOPTS_VALUE;
2024 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2028 /* get the file size, if possible */
2029 if (ic->iformat->flags & AVFMT_NOFILE) {
2032 file_size = avio_size(ic->pb);
2033 file_size = FFMAX(0, file_size);
2036 if ((!strcmp(ic->iformat->name, "mpeg") ||
2037 !strcmp(ic->iformat->name, "mpegts")) &&
2038 file_size && ic->pb->seekable) {
2039 /* get accurate estimate from the PTSes */
2040 estimate_timings_from_pts(ic, old_offset);
2041 } else if (has_duration(ic)) {
2042 /* at least one component has timings - we use them for all
2044 fill_all_stream_timings(ic);
2046 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2047 /* less precise: use bitrate info */
2048 estimate_timings_from_bit_rate(ic);
2050 update_stream_timings(ic);
2054 AVStream av_unused *st;
2055 for(i = 0;i < ic->nb_streams; i++) {
2056 st = ic->streams[i];
2057 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2058 (double) st->start_time / AV_TIME_BASE,
2059 (double) st->duration / AV_TIME_BASE);
2061 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2062 (double) ic->start_time / AV_TIME_BASE,
2063 (double) ic->duration / AV_TIME_BASE,
2064 ic->bit_rate / 1000);
2068 static int has_codec_parameters(AVCodecContext *avctx)
2071 switch (avctx->codec_type) {
2072 case AVMEDIA_TYPE_AUDIO:
2073 val = avctx->sample_rate && avctx->channels && avctx->sample_fmt != AV_SAMPLE_FMT_NONE;
2074 if (!avctx->frame_size &&
2075 (avctx->codec_id == CODEC_ID_VORBIS ||
2076 avctx->codec_id == CODEC_ID_AAC ||
2077 avctx->codec_id == CODEC_ID_MP1 ||
2078 avctx->codec_id == CODEC_ID_MP2 ||
2079 avctx->codec_id == CODEC_ID_MP3 ||
2080 avctx->codec_id == CODEC_ID_CELT))
2083 case AVMEDIA_TYPE_VIDEO:
2084 val = avctx->width && avctx->pix_fmt != PIX_FMT_NONE;
2086 case AVMEDIA_TYPE_DATA:
2087 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2092 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2095 static int has_decode_delay_been_guessed(AVStream *st)
2097 return st->codec->codec_id != CODEC_ID_H264 ||
2098 st->info->nb_decoded_frames >= 6;
2101 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2102 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2105 int got_picture = 1, ret = 0;
2107 AVPacket pkt = *avpkt;
2109 if(!st->codec->codec){
2110 AVDictionary *thread_opt = NULL;
2112 codec = avcodec_find_decoder(st->codec->codec_id);
2116 /* force thread count to 1 since the h264 decoder will not extract SPS
2117 * and PPS to extradata during multi-threaded decoding */
2118 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2119 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2121 av_dict_free(&thread_opt);
2126 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2128 (!has_codec_parameters(st->codec) ||
2129 !has_decode_delay_been_guessed(st) ||
2130 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2132 avcodec_get_frame_defaults(&picture);
2133 switch(st->codec->codec_type) {
2134 case AVMEDIA_TYPE_VIDEO:
2135 ret = avcodec_decode_video2(st->codec, &picture,
2136 &got_picture, &pkt);
2138 case AVMEDIA_TYPE_AUDIO:
2139 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2146 st->info->nb_decoded_frames++;
2152 if(!pkt.data && !got_picture)
2157 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2159 while (tags->id != CODEC_ID_NONE) {
2167 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2170 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2171 if(tag == tags[i].tag)
2174 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2175 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2178 return CODEC_ID_NONE;
2181 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2184 for(i=0; tags && tags[i]; i++){
2185 int tag= ff_codec_get_tag(tags[i], id);
2191 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2194 for(i=0; tags && tags[i]; i++){
2195 enum CodecID id= ff_codec_get_id(tags[i], tag);
2196 if(id!=CODEC_ID_NONE) return id;
2198 return CODEC_ID_NONE;
2201 static void compute_chapters_end(AVFormatContext *s)
2204 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2206 for (i = 0; i < s->nb_chapters; i++)
2207 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2208 AVChapter *ch = s->chapters[i];
2209 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2212 for (j = 0; j < s->nb_chapters; j++) {
2213 AVChapter *ch1 = s->chapters[j];
2214 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2215 if (j != i && next_start > ch->start && next_start < end)
2218 ch->end = (end == INT64_MAX) ? ch->start : end;
2222 static int get_std_framerate(int i){
2223 if(i<60*12) return i*1001;
2224 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2228 * Is the time base unreliable.
2229 * This is a heuristic to balance between quick acceptance of the values in
2230 * the headers vs. some extra checks.
2231 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2232 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2233 * And there are "variable" fps files this needs to detect as well.
2235 static int tb_unreliable(AVCodecContext *c){
2236 if( c->time_base.den >= 101L*c->time_base.num
2237 || c->time_base.den < 5L*c->time_base.num
2238 /* || c->codec_tag == AV_RL32("DIVX")
2239 || c->codec_tag == AV_RL32("XVID")*/
2240 || c->codec_id == CODEC_ID_MPEG2VIDEO
2241 || c->codec_id == CODEC_ID_H264
2247 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2249 int i, count, ret, read_size, j;
2251 AVPacket pkt1, *pkt;
2252 int64_t old_offset = avio_tell(ic->pb);
2253 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2254 int flush_codecs = 1;
2256 for(i=0;i<ic->nb_streams;i++) {
2258 AVDictionary *thread_opt = NULL;
2259 st = ic->streams[i];
2261 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2262 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2263 /* if(!st->time_base.num)
2265 if(!st->codec->time_base.num)
2266 st->codec->time_base= st->time_base;
2268 //only for the split stuff
2269 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2270 st->parser = av_parser_init(st->codec->codec_id);
2271 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2272 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2275 assert(!st->codec->codec);
2276 codec = avcodec_find_decoder(st->codec->codec_id);
2278 /* force thread count to 1 since the h264 decoder will not extract SPS
2279 * and PPS to extradata during multi-threaded decoding */
2280 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2282 /* Ensure that subtitle_header is properly set. */
2283 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2284 && codec && !st->codec->codec)
2285 avcodec_open2(st->codec, codec, options ? &options[i]
2288 //try to just open decoders, in case this is enough to get parameters
2289 if(!has_codec_parameters(st->codec)){
2290 if (codec && !st->codec->codec)
2291 avcodec_open2(st->codec, codec, options ? &options[i]
2295 av_dict_free(&thread_opt);
2298 for (i=0; i<ic->nb_streams; i++) {
2299 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2305 if (ff_check_interrupt(&ic->interrupt_callback)){
2307 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2311 /* check if one codec still needs to be handled */
2312 for(i=0;i<ic->nb_streams;i++) {
2313 int fps_analyze_framecount = 20;
2315 st = ic->streams[i];
2316 if (!has_codec_parameters(st->codec))
2318 /* if the timebase is coarse (like the usual millisecond precision
2319 of mkv), we need to analyze more frames to reliably arrive at
2321 if (av_q2d(st->time_base) > 0.0005)
2322 fps_analyze_framecount *= 2;
2323 if (ic->fps_probe_size >= 0)
2324 fps_analyze_framecount = ic->fps_probe_size;
2325 /* variable fps and no guess at the real fps */
2326 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2327 && st->info->duration_count < fps_analyze_framecount
2328 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2330 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2332 if(st->first_dts == AV_NOPTS_VALUE && (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2335 if (i == ic->nb_streams) {
2336 /* NOTE: if the format has no header, then we need to read
2337 some packets to get most of the streams, so we cannot
2339 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2340 /* if we found the info for all the codecs, we can stop */
2342 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2347 /* we did not get all the codec info, but we read too much data */
2348 if (read_size >= ic->probesize) {
2350 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2354 /* NOTE: a new stream can be added there if no header in file
2355 (AVFMTCTX_NOHEADER) */
2356 ret = read_frame_internal(ic, &pkt1);
2357 if (ret == AVERROR(EAGAIN))
2365 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2366 if ((ret = av_dup_packet(pkt)) < 0)
2367 goto find_stream_info_err;
2369 read_size += pkt->size;
2371 st = ic->streams[pkt->stream_index];
2372 if (st->codec_info_nb_frames>1) {
2374 if (st->time_base.den > 0)
2375 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2376 if (st->avg_frame_rate.num > 0)
2377 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, (AVRational){st->avg_frame_rate.den, st->avg_frame_rate.num}, AV_TIME_BASE_Q));
2379 if (t >= ic->max_analyze_duration) {
2380 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2383 st->info->codec_info_duration += pkt->duration;
2386 int64_t last = st->info->last_dts;
2388 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2389 double dts= pkt->dts * av_q2d(st->time_base);
2390 int64_t duration= pkt->dts - last;
2392 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2393 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2394 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2395 int framerate= get_std_framerate(i);
2396 double sdts= dts*framerate/(1001*12);
2398 int ticks= lrintf(sdts+j*0.5);
2399 double error= sdts - ticks + j*0.5;
2400 st->info->duration_error[j][0][i] += error;
2401 st->info->duration_error[j][1][i] += error*error;
2404 st->info->duration_count++;
2405 // ignore the first 4 values, they might have some random jitter
2406 if (st->info->duration_count > 3)
2407 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2409 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2410 st->info->last_dts = pkt->dts;
2412 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2413 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2414 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2415 st->codec->extradata_size= i;
2416 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2417 if (!st->codec->extradata)
2418 return AVERROR(ENOMEM);
2419 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2420 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2424 /* if still no information, we try to open the codec and to
2425 decompress the frame. We try to avoid that in most cases as
2426 it takes longer and uses more memory. For MPEG-4, we need to
2427 decompress for QuickTime.
2429 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2430 least one frame of codec data, this makes sure the codec initializes
2431 the channel configuration and does not only trust the values from the container.
2433 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2435 st->codec_info_nb_frames++;
2440 AVPacket empty_pkt = { 0 };
2442 av_init_packet(&empty_pkt);
2444 ret = -1; /* we could not have all the codec parameters before EOF */
2445 for(i=0;i<ic->nb_streams;i++) {
2446 st = ic->streams[i];
2448 /* flush the decoders */
2450 err = try_decode_frame(st, &empty_pkt,
2451 (options && i < orig_nb_streams) ?
2452 &options[i] : NULL);
2453 } while (err > 0 && !has_codec_parameters(st->codec));
2456 av_log(ic, AV_LOG_INFO,
2457 "decoding for stream %d failed\n", st->index);
2459 if (!has_codec_parameters(st->codec)){
2461 avcodec_string(buf, sizeof(buf), st->codec, 0);
2462 av_log(ic, AV_LOG_WARNING,
2463 "Could not find codec parameters (%s)\n", buf);
2470 // close codecs which were opened in try_decode_frame()
2471 for(i=0;i<ic->nb_streams;i++) {
2472 st = ic->streams[i];
2473 if(st->codec->codec)
2474 avcodec_close(st->codec);
2476 for(i=0;i<ic->nb_streams;i++) {
2477 st = ic->streams[i];
2478 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2479 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2480 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2481 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2482 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2483 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2484 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2485 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2486 st->codec->codec_tag= tag;
2489 // the check for tb_unreliable() is not completely correct, since this is not about handling
2490 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2491 // ipmovie.c produces.
2492 if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
2493 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
2494 if (st->info->duration_count && !st->r_frame_rate.num
2495 && tb_unreliable(st->codec) /*&&
2496 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2497 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2499 double best_error= 0.01;
2501 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2504 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2506 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2509 int n= st->info->duration_count;
2510 double a= st->info->duration_error[k][0][j] / n;
2511 double error= st->info->duration_error[k][1][j]/n - a*a;
2513 if(error < best_error && best_error> 0.000000001){
2515 num = get_std_framerate(j);
2518 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2521 // do not increase frame rate by more than 1 % in order to match a standard rate.
2522 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2523 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2526 if (!st->r_frame_rate.num){
2527 if( st->codec->time_base.den * (int64_t)st->time_base.num
2528 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2529 st->r_frame_rate.num = st->codec->time_base.den;
2530 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2532 st->r_frame_rate.num = st->time_base.den;
2533 st->r_frame_rate.den = st->time_base.num;
2536 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2537 if(!st->codec->bits_per_coded_sample)
2538 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2539 // set stream disposition based on audio service type
2540 switch (st->codec->audio_service_type) {
2541 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2542 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2543 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2544 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2545 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2546 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2547 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2548 st->disposition = AV_DISPOSITION_COMMENT; break;
2549 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2550 st->disposition = AV_DISPOSITION_KARAOKE; break;
2555 estimate_timings(ic, old_offset);
2557 compute_chapters_end(ic);
2560 /* correct DTS for B-frame streams with no timestamps */
2561 for(i=0;i<ic->nb_streams;i++) {
2562 st = ic->streams[i];
2563 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2565 ppktl = &ic->packet_buffer;
2567 if(ppkt1->stream_index != i)
2569 if(ppkt1->pkt->dts < 0)
2571 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2573 ppkt1->pkt->dts -= delta;
2578 st->cur_dts -= delta;
2584 find_stream_info_err:
2585 for (i=0; i < ic->nb_streams; i++) {
2586 if (ic->streams[i]->codec)
2587 ic->streams[i]->codec->thread_count = 0;
2588 av_freep(&ic->streams[i]->info);
2593 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2597 for (i = 0; i < ic->nb_programs; i++) {
2598 if (ic->programs[i] == last) {
2602 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2603 if (ic->programs[i]->stream_index[j] == s)
2604 return ic->programs[i];
2610 int av_find_best_stream(AVFormatContext *ic,
2611 enum AVMediaType type,
2612 int wanted_stream_nb,
2614 AVCodec **decoder_ret,
2617 int i, nb_streams = ic->nb_streams;
2618 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2619 unsigned *program = NULL;
2620 AVCodec *decoder = NULL, *best_decoder = NULL;
2622 if (related_stream >= 0 && wanted_stream_nb < 0) {
2623 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2625 program = p->stream_index;
2626 nb_streams = p->nb_stream_indexes;
2629 for (i = 0; i < nb_streams; i++) {
2630 int real_stream_index = program ? program[i] : i;
2631 AVStream *st = ic->streams[real_stream_index];
2632 AVCodecContext *avctx = st->codec;
2633 if (avctx->codec_type != type)
2635 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2637 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2640 decoder = avcodec_find_decoder(st->codec->codec_id);
2643 ret = AVERROR_DECODER_NOT_FOUND;
2647 if (best_count >= st->codec_info_nb_frames)
2649 best_count = st->codec_info_nb_frames;
2650 ret = real_stream_index;
2651 best_decoder = decoder;
2652 if (program && i == nb_streams - 1 && ret < 0) {
2654 nb_streams = ic->nb_streams;
2655 i = 0; /* no related stream found, try again with everything */
2659 *decoder_ret = best_decoder;
2663 /*******************************************************/
2665 int av_read_play(AVFormatContext *s)
2667 if (s->iformat->read_play)
2668 return s->iformat->read_play(s);
2670 return avio_pause(s->pb, 0);
2671 return AVERROR(ENOSYS);
2674 int av_read_pause(AVFormatContext *s)
2676 if (s->iformat->read_pause)
2677 return s->iformat->read_pause(s);
2679 return avio_pause(s->pb, 1);
2680 return AVERROR(ENOSYS);
2683 void avformat_free_context(AVFormatContext *s)
2689 if (s->iformat && s->iformat->priv_class && s->priv_data)
2690 av_opt_free(s->priv_data);
2692 for(i=0;i<s->nb_streams;i++) {
2693 /* free all data in a stream component */
2696 av_parser_close(st->parser);
2697 av_free_packet(&st->cur_pkt);
2699 av_dict_free(&st->metadata);
2700 av_freep(&st->index_entries);
2701 av_freep(&st->codec->extradata);
2702 av_freep(&st->codec->subtitle_header);
2703 av_freep(&st->codec);
2704 av_freep(&st->priv_data);
2705 av_freep(&st->info);
2708 for(i=s->nb_programs-1; i>=0; i--) {
2709 av_dict_free(&s->programs[i]->metadata);
2710 av_freep(&s->programs[i]->stream_index);
2711 av_freep(&s->programs[i]);
2713 av_freep(&s->programs);
2714 av_freep(&s->priv_data);
2715 while(s->nb_chapters--) {
2716 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2717 av_freep(&s->chapters[s->nb_chapters]);
2719 av_freep(&s->chapters);
2720 av_dict_free(&s->metadata);
2721 av_freep(&s->streams);
2725 #if FF_API_CLOSE_INPUT_FILE
2726 void av_close_input_file(AVFormatContext *s)
2728 avformat_close_input(&s);
2732 void avformat_close_input(AVFormatContext **ps)
2734 AVFormatContext *s = *ps;
2735 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2737 flush_packet_queue(s);
2738 if (s->iformat && (s->iformat->read_close))
2739 s->iformat->read_close(s);
2740 avformat_free_context(s);
2746 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2752 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2754 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2757 s->streams = streams;
2759 st = av_mallocz(sizeof(AVStream));
2762 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2767 st->codec = avcodec_alloc_context3(c);
2769 /* no default bitrate if decoding */
2770 st->codec->bit_rate = 0;
2772 st->index = s->nb_streams;
2773 st->start_time = AV_NOPTS_VALUE;
2774 st->duration = AV_NOPTS_VALUE;
2775 /* we set the current DTS to 0 so that formats without any timestamps
2776 but durations get some timestamps, formats with some unknown
2777 timestamps have their first few packets buffered and the
2778 timestamps corrected before they are returned to the user */
2780 st->first_dts = AV_NOPTS_VALUE;
2781 st->probe_packets = MAX_PROBE_PACKETS;
2783 /* default pts setting is MPEG-like */
2784 avpriv_set_pts_info(st, 33, 1, 90000);
2785 st->last_IP_pts = AV_NOPTS_VALUE;
2786 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2787 st->pts_buffer[i]= AV_NOPTS_VALUE;
2788 st->reference_dts = AV_NOPTS_VALUE;
2790 st->sample_aspect_ratio = (AVRational){0,1};
2792 s->streams[s->nb_streams++] = st;
2796 AVProgram *av_new_program(AVFormatContext *ac, int id)
2798 AVProgram *program=NULL;
2801 av_dlog(ac, "new_program: id=0x%04x\n", id);
2803 for(i=0; i<ac->nb_programs; i++)
2804 if(ac->programs[i]->id == id)
2805 program = ac->programs[i];
2808 program = av_mallocz(sizeof(AVProgram));
2811 dynarray_add(&ac->programs, &ac->nb_programs, program);
2812 program->discard = AVDISCARD_NONE;
2819 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2821 AVChapter *chapter = NULL;
2824 for(i=0; i<s->nb_chapters; i++)
2825 if(s->chapters[i]->id == id)
2826 chapter = s->chapters[i];
2829 chapter= av_mallocz(sizeof(AVChapter));
2832 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2834 av_dict_set(&chapter->metadata, "title", title, 0);
2836 chapter->time_base= time_base;
2837 chapter->start = start;
2843 /************************************************************/
2844 /* output media file */
2846 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
2847 const char *format, const char *filename)
2849 AVFormatContext *s = avformat_alloc_context();
2858 oformat = av_guess_format(format, NULL, NULL);
2860 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
2861 ret = AVERROR(EINVAL);
2865 oformat = av_guess_format(NULL, filename, NULL);
2867 ret = AVERROR(EINVAL);
2868 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
2875 s->oformat = oformat;
2876 if (s->oformat->priv_data_size > 0) {
2877 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2880 if (s->oformat->priv_class) {
2881 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2882 av_opt_set_defaults(s->priv_data);
2885 s->priv_data = NULL;
2888 av_strlcpy(s->filename, filename, sizeof(s->filename));
2892 av_log(s, AV_LOG_ERROR, "Out of memory\n");
2893 ret = AVERROR(ENOMEM);
2895 avformat_free_context(s);
2899 #if FF_API_ALLOC_OUTPUT_CONTEXT
2900 AVFormatContext *avformat_alloc_output_context(const char *format,
2901 AVOutputFormat *oformat, const char *filename)
2903 AVFormatContext *avctx;
2904 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
2905 return ret < 0 ? NULL : avctx;
2909 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
2911 const AVCodecTag *avctag;
2913 enum CodecID id = CODEC_ID_NONE;
2914 unsigned int tag = 0;
2917 * Check that tag + id is in the table
2918 * If neither is in the table -> OK
2919 * If tag is in the table with another id -> FAIL
2920 * If id is in the table with another tag -> FAIL unless strict < normal
2922 for (n = 0; s->oformat->codec_tag[n]; n++) {
2923 avctag = s->oformat->codec_tag[n];
2924 while (avctag->id != CODEC_ID_NONE) {
2925 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
2927 if (id == st->codec->codec_id)
2930 if (avctag->id == st->codec->codec_id)
2935 if (id != CODEC_ID_NONE)
2937 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
2942 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
2946 AVDictionary *tmp = NULL;
2949 av_dict_copy(&tmp, *options, 0);
2950 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
2952 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
2953 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
2956 // some sanity checks
2957 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
2958 av_log(s, AV_LOG_ERROR, "no streams\n");
2959 ret = AVERROR(EINVAL);
2963 for(i=0;i<s->nb_streams;i++) {
2966 switch (st->codec->codec_type) {
2967 case AVMEDIA_TYPE_AUDIO:
2968 if(st->codec->sample_rate<=0){
2969 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
2970 ret = AVERROR(EINVAL);
2973 if(!st->codec->block_align)
2974 st->codec->block_align = st->codec->channels *
2975 av_get_bits_per_sample(st->codec->codec_id) >> 3;
2977 case AVMEDIA_TYPE_VIDEO:
2978 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
2979 av_log(s, AV_LOG_ERROR, "time base not set\n");
2980 ret = AVERROR(EINVAL);
2983 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
2984 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
2985 ret = AVERROR(EINVAL);
2988 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
2989 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
2991 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
2992 ret = AVERROR(EINVAL);
2998 if(s->oformat->codec_tag){
2999 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)){
3000 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3001 st->codec->codec_tag= 0;
3003 if(st->codec->codec_tag){
3004 if (!validate_codec_tag(s, st)) {
3006 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3007 av_log(s, AV_LOG_ERROR,
3008 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3009 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3010 ret = AVERROR_INVALIDDATA;
3014 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3017 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3018 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3019 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3022 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3023 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3024 if (!s->priv_data) {
3025 ret = AVERROR(ENOMEM);
3028 if (s->oformat->priv_class) {
3029 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3030 av_opt_set_defaults(s->priv_data);
3031 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3036 /* set muxer identification string */
3037 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3038 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3041 if(s->oformat->write_header){
3042 ret = s->oformat->write_header(s);
3047 /* init PTS generation */
3048 for(i=0;i<s->nb_streams;i++) {
3049 int64_t den = AV_NOPTS_VALUE;
3052 switch (st->codec->codec_type) {
3053 case AVMEDIA_TYPE_AUDIO:
3054 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3056 case AVMEDIA_TYPE_VIDEO:
3057 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3062 if (den != AV_NOPTS_VALUE) {
3064 ret = AVERROR_INVALIDDATA;
3067 frac_init(&st->pts, 0, 0, den);
3072 av_dict_free(options);
3081 //FIXME merge with compute_pkt_fields
3082 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3083 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3084 int num, den, frame_size, i;
3086 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3087 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3089 /* duration field */
3090 if (pkt->duration == 0) {
3091 compute_frame_duration(&num, &den, st, NULL, pkt);
3093 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3097 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3100 //XXX/FIXME this is a temporary hack until all encoders output pts
3101 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3103 // pkt->pts= st->cur_dts;
3104 pkt->pts= st->pts.val;
3107 //calculate dts from pts
3108 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3109 st->pts_buffer[0]= pkt->pts;
3110 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3111 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3112 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3113 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3115 pkt->dts= st->pts_buffer[0];
3118 if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && ((!(s->oformat->flags & AVFMT_TS_NONSTRICT) && st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)){
3119 av_log(s, AV_LOG_ERROR,
3120 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3121 st->index, st->cur_dts, pkt->dts);
3122 return AVERROR(EINVAL);
3124 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3125 av_log(s, AV_LOG_ERROR, "pts < dts in stream %d\n", st->index);
3126 return AVERROR(EINVAL);
3129 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3130 st->cur_dts= pkt->dts;
3131 st->pts.val= pkt->dts;
3134 switch (st->codec->codec_type) {
3135 case AVMEDIA_TYPE_AUDIO:
3136 frame_size = get_audio_frame_size(st->codec, pkt->size);
3138 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3139 likely equal to the encoder delay, but it would be better if we
3140 had the real timestamps from the encoder */
3141 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3142 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3145 case AVMEDIA_TYPE_VIDEO:
3146 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3154 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3159 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3160 return s->oformat->write_packet(s, pkt);
3164 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3166 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3169 ret= s->oformat->write_packet(s, pkt);
3172 s->streams[pkt->stream_index]->nb_frames++;
3176 #define CHUNK_START 0x1000
3178 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3179 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3181 AVPacketList **next_point, *this_pktl;
3182 AVStream *st= s->streams[pkt->stream_index];
3183 int chunked= s->max_chunk_size || s->max_chunk_duration;
3185 this_pktl = av_mallocz(sizeof(AVPacketList));
3187 return AVERROR(ENOMEM);
3188 this_pktl->pkt= *pkt;
3189 pkt->destruct= NULL; // do not free original but only the copy
3190 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3192 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3193 next_point = &(st->last_in_packet_buffer->next);
3195 next_point = &s->packet_buffer;
3200 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3201 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3202 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3203 st->interleaver_chunk_size += pkt->size;
3204 st->interleaver_chunk_duration += pkt->duration;
3207 st->interleaver_chunk_size =
3208 st->interleaver_chunk_duration = 0;
3209 this_pktl->pkt.flags |= CHUNK_START;
3213 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3215 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3216 || !compare(s, &(*next_point)->pkt, pkt))){
3217 next_point= &(*next_point)->next;
3222 next_point = &(s->packet_buffer_end->next);
3225 assert(!*next_point);
3227 s->packet_buffer_end= this_pktl;
3230 this_pktl->next= *next_point;
3232 s->streams[pkt->stream_index]->last_in_packet_buffer=
3233 *next_point= this_pktl;
3237 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3239 AVStream *st = s->streams[ pkt ->stream_index];
3240 AVStream *st2= s->streams[ next->stream_index];
3241 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3243 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3244 int64_t ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st ->codec->codec_type == AVMEDIA_TYPE_AUDIO);
3245 int64_t ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st2->codec->codec_type == AVMEDIA_TYPE_AUDIO);
3247 ts= ( pkt ->dts* st->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st ->codec->codec_type == AVMEDIA_TYPE_AUDIO)* st->time_base.den)*st2->time_base.den
3248 -( next->dts*st2->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st2->codec->codec_type == AVMEDIA_TYPE_AUDIO)*st2->time_base.den)* st->time_base.den;
3251 comp= (ts>ts2) - (ts<ts2);
3255 return pkt->stream_index < next->stream_index;
3259 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
3261 int stream_count=0, noninterleaved_count=0;
3262 int64_t delta_dts_max = 0;
3266 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3271 for(i=0; i < s->nb_streams; i++) {
3272 if (s->streams[i]->last_in_packet_buffer) {
3274 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3275 ++noninterleaved_count;
3279 if (s->nb_streams == stream_count) {
3282 for(i=0; i < s->nb_streams; i++) {
3283 if (s->streams[i]->last_in_packet_buffer) {
3285 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3286 s->streams[i]->time_base,
3288 av_rescale_q(s->packet_buffer->pkt.dts,
3289 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3291 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3294 if(s->nb_streams == stream_count+noninterleaved_count &&
3295 delta_dts_max > 20*AV_TIME_BASE) {
3296 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3300 if(stream_count && flush){
3301 pktl= s->packet_buffer;
3304 s->packet_buffer= pktl->next;
3305 if(!s->packet_buffer)
3306 s->packet_buffer_end= NULL;
3308 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3309 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3313 av_init_packet(out);
3319 * Interleave an AVPacket correctly so it can be muxed.
3320 * @param out the interleaved packet will be output here
3321 * @param in the input packet
3322 * @param flush 1 if no further packets are available as input and all
3323 * remaining packets should be output
3324 * @return 1 if a packet was output, 0 if no packet could be output,
3325 * < 0 if an error occurred
3327 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3328 if (s->oformat->interleave_packet) {
3329 int ret = s->oformat->interleave_packet(s, out, in, flush);
3334 return av_interleave_packet_per_dts(s, out, in, flush);
3337 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3338 AVStream *st= s->streams[ pkt->stream_index];
3341 //FIXME/XXX/HACK drop zero sized packets
3342 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3345 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3346 pkt->size, pkt->dts, pkt->pts);
3347 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3350 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3351 return AVERROR(EINVAL);
3355 int ret= interleave_packet(s, &opkt, pkt, 0);
3356 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3359 ret= s->oformat->write_packet(s, &opkt);
3361 s->streams[opkt.stream_index]->nb_frames++;
3363 av_free_packet(&opkt);
3368 if(s->pb && s->pb->error)
3369 return s->pb->error;
3373 int av_write_trailer(AVFormatContext *s)
3379 ret= interleave_packet(s, &pkt, NULL, 1);
3380 if(ret<0) //FIXME cleanup needed for ret<0 ?
3385 ret= s->oformat->write_packet(s, &pkt);
3387 s->streams[pkt.stream_index]->nb_frames++;
3389 av_free_packet(&pkt);
3393 if(s->pb && s->pb->error)
3397 if(s->oformat->write_trailer)
3398 ret = s->oformat->write_trailer(s);
3401 ret = s->pb ? s->pb->error : 0;
3402 for(i=0;i<s->nb_streams;i++) {
3403 av_freep(&s->streams[i]->priv_data);
3404 av_freep(&s->streams[i]->index_entries);
3406 if (s->oformat->priv_class)
3407 av_opt_free(s->priv_data);
3408 av_freep(&s->priv_data);
3412 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3413 int64_t *dts, int64_t *wall)
3415 if (!s->oformat || !s->oformat->get_output_timestamp)
3416 return AVERROR(ENOSYS);
3417 s->oformat->get_output_timestamp(s, stream, dts, wall);
3421 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3424 AVProgram *program=NULL;
3427 if (idx >= ac->nb_streams) {
3428 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3432 for(i=0; i<ac->nb_programs; i++){
3433 if(ac->programs[i]->id != progid)
3435 program = ac->programs[i];
3436 for(j=0; j<program->nb_stream_indexes; j++)
3437 if(program->stream_index[j] == idx)
3440 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3443 program->stream_index = tmp;
3444 program->stream_index[program->nb_stream_indexes++] = idx;
3449 static void print_fps(double d, const char *postfix){
3450 uint64_t v= lrintf(d*100);
3451 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3452 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3453 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3456 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3458 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3459 AVDictionaryEntry *tag=NULL;
3461 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3462 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3463 if(strcmp("language", tag->key)){
3466 av_strlcpy(tmp, tag->value, sizeof(tmp));
3467 for(i=0; i<strlen(tmp); i++) if(tmp[i]==0xd) tmp[i]=' ';
3468 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tmp);
3474 /* "user interface" functions */
3475 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3478 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3479 AVStream *st = ic->streams[i];
3480 int g = av_gcd(st->time_base.num, st->time_base.den);
3481 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3482 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3483 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3484 /* the pid is an important information, so we display it */
3485 /* XXX: add a generic system */
3486 if (flags & AVFMT_SHOW_IDS)
3487 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3489 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3490 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3491 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3492 if (st->sample_aspect_ratio.num && // default
3493 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3494 AVRational display_aspect_ratio;
3495 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3496 st->codec->width*st->sample_aspect_ratio.num,
3497 st->codec->height*st->sample_aspect_ratio.den,
3499 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3500 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3501 display_aspect_ratio.num, display_aspect_ratio.den);
3503 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3504 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3505 print_fps(av_q2d(st->avg_frame_rate), "fps");
3506 if(st->r_frame_rate.den && st->r_frame_rate.num)
3507 print_fps(av_q2d(st->r_frame_rate), "tbr");
3508 if(st->time_base.den && st->time_base.num)
3509 print_fps(1/av_q2d(st->time_base), "tbn");
3510 if(st->codec->time_base.den && st->codec->time_base.num)
3511 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3513 if (st->disposition & AV_DISPOSITION_DEFAULT)
3514 av_log(NULL, AV_LOG_INFO, " (default)");
3515 if (st->disposition & AV_DISPOSITION_DUB)
3516 av_log(NULL, AV_LOG_INFO, " (dub)");
3517 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3518 av_log(NULL, AV_LOG_INFO, " (original)");
3519 if (st->disposition & AV_DISPOSITION_COMMENT)
3520 av_log(NULL, AV_LOG_INFO, " (comment)");
3521 if (st->disposition & AV_DISPOSITION_LYRICS)
3522 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3523 if (st->disposition & AV_DISPOSITION_KARAOKE)
3524 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3525 if (st->disposition & AV_DISPOSITION_FORCED)
3526 av_log(NULL, AV_LOG_INFO, " (forced)");
3527 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3528 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3529 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3530 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3531 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3532 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3533 av_log(NULL, AV_LOG_INFO, "\n");
3534 dump_metadata(NULL, st->metadata, " ");
3537 void av_dump_format(AVFormatContext *ic,
3543 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3544 if (ic->nb_streams && !printed)
3547 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3548 is_output ? "Output" : "Input",
3550 is_output ? ic->oformat->name : ic->iformat->name,
3551 is_output ? "to" : "from", url);
3552 dump_metadata(NULL, ic->metadata, " ");
3554 av_log(NULL, AV_LOG_INFO, " Duration: ");
3555 if (ic->duration != AV_NOPTS_VALUE) {
3556 int hours, mins, secs, us;
3557 secs = ic->duration / AV_TIME_BASE;
3558 us = ic->duration % AV_TIME_BASE;
3563 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3564 (100 * us) / AV_TIME_BASE);
3566 av_log(NULL, AV_LOG_INFO, "N/A");
3568 if (ic->start_time != AV_NOPTS_VALUE) {
3570 av_log(NULL, AV_LOG_INFO, ", start: ");
3571 secs = ic->start_time / AV_TIME_BASE;
3572 us = abs(ic->start_time % AV_TIME_BASE);
3573 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3574 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3576 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3578 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3580 av_log(NULL, AV_LOG_INFO, "N/A");
3582 av_log(NULL, AV_LOG_INFO, "\n");
3584 for (i = 0; i < ic->nb_chapters; i++) {
3585 AVChapter *ch = ic->chapters[i];
3586 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3587 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3588 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3590 dump_metadata(NULL, ch->metadata, " ");
3592 if(ic->nb_programs) {
3593 int j, k, total = 0;
3594 for(j=0; j<ic->nb_programs; j++) {
3595 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3597 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3598 name ? name->value : "");
3599 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3600 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3601 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3602 printed[ic->programs[j]->stream_index[k]] = 1;
3604 total += ic->programs[j]->nb_stream_indexes;
3606 if (total < ic->nb_streams)
3607 av_log(NULL, AV_LOG_INFO, " No Program\n");
3609 for(i=0;i<ic->nb_streams;i++)
3611 dump_stream_format(ic, i, index, is_output);
3616 int64_t av_gettime(void)
3619 gettimeofday(&tv,NULL);
3620 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3623 uint64_t ff_ntp_time(void)
3625 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3628 int av_get_frame_filename(char *buf, int buf_size,
3629 const char *path, int number)
3632 char *q, buf1[20], c;
3633 int nd, len, percentd_found;
3645 while (isdigit(*p)) {
3646 nd = nd * 10 + *p++ - '0';
3649 } while (isdigit(c));
3658 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3660 if ((q - buf + len) > buf_size - 1)
3662 memcpy(q, buf1, len);
3670 if ((q - buf) < buf_size - 1)
3674 if (!percentd_found)
3683 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3687 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3689 for(i=0;i<size;i+=16) {
3696 PRINT(" %02x", buf[i+j]);
3701 for(j=0;j<len;j++) {
3703 if (c < ' ' || c > '~')
3712 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3714 hex_dump_internal(NULL, f, 0, buf, size);
3717 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3719 hex_dump_internal(avcl, NULL, level, buf, size);
3722 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3725 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3726 PRINT("stream #%d:\n", pkt->stream_index);
3727 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3728 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3729 /* DTS is _always_ valid after av_read_frame() */
3731 if (pkt->dts == AV_NOPTS_VALUE)
3734 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3735 /* PTS may not be known if B-frames are present. */
3737 if (pkt->pts == AV_NOPTS_VALUE)
3740 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3742 PRINT(" size=%d\n", pkt->size);
3745 av_hex_dump(f, pkt->data, pkt->size);
3749 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3751 AVRational tb = { 1, AV_TIME_BASE };
3752 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3756 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3758 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3762 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3764 AVRational tb = { 1, AV_TIME_BASE };
3765 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3769 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3772 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3775 void av_url_split(char *proto, int proto_size,
3776 char *authorization, int authorization_size,
3777 char *hostname, int hostname_size,
3779 char *path, int path_size,
3782 const char *p, *ls, *at, *col, *brk;
3784 if (port_ptr) *port_ptr = -1;
3785 if (proto_size > 0) proto[0] = 0;
3786 if (authorization_size > 0) authorization[0] = 0;
3787 if (hostname_size > 0) hostname[0] = 0;
3788 if (path_size > 0) path[0] = 0;
3790 /* parse protocol */
3791 if ((p = strchr(url, ':'))) {
3792 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3797 /* no protocol means plain filename */
3798 av_strlcpy(path, url, path_size);
3802 /* separate path from hostname */
3803 ls = strchr(p, '/');
3805 ls = strchr(p, '?');
3807 av_strlcpy(path, ls, path_size);
3809 ls = &p[strlen(p)]; // XXX
3811 /* the rest is hostname, use that to parse auth/port */
3813 /* authorization (user[:pass]@hostname) */
3814 if ((at = strchr(p, '@')) && at < ls) {
3815 av_strlcpy(authorization, p,
3816 FFMIN(authorization_size, at + 1 - p));
3817 p = at + 1; /* skip '@' */
3820 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3822 av_strlcpy(hostname, p + 1,
3823 FFMIN(hostname_size, brk - p));
3824 if (brk[1] == ':' && port_ptr)
3825 *port_ptr = atoi(brk + 2);
3826 } else if ((col = strchr(p, ':')) && col < ls) {
3827 av_strlcpy(hostname, p,
3828 FFMIN(col + 1 - p, hostname_size));
3829 if (port_ptr) *port_ptr = atoi(col + 1);
3831 av_strlcpy(hostname, p,
3832 FFMIN(ls + 1 - p, hostname_size));
3836 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3839 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3842 'C', 'D', 'E', 'F' };
3843 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3846 'c', 'd', 'e', 'f' };
3847 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3849 for(i = 0; i < s; i++) {
3850 buff[i * 2] = hex_table[src[i] >> 4];
3851 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3857 int ff_hex_to_data(uint8_t *data, const char *p)
3864 p += strspn(p, SPACE_CHARS);
3867 c = toupper((unsigned char) *p++);
3868 if (c >= '0' && c <= '9')
3870 else if (c >= 'A' && c <= 'F')
3885 #if FF_API_SET_PTS_INFO
3886 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3887 unsigned int pts_num, unsigned int pts_den)
3889 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3893 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3894 unsigned int pts_num, unsigned int pts_den)
3897 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3898 if(new_tb.num != pts_num)
3899 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3901 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3903 if(new_tb.num <= 0 || new_tb.den <= 0) {
3904 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
3907 s->time_base = new_tb;
3908 s->pts_wrap_bits = pts_wrap_bits;
3911 int ff_url_join(char *str, int size, const char *proto,
3912 const char *authorization, const char *hostname,
3913 int port, const char *fmt, ...)
3916 struct addrinfo hints, *ai;
3921 av_strlcatf(str, size, "%s://", proto);
3922 if (authorization && authorization[0])
3923 av_strlcatf(str, size, "%s@", authorization);
3924 #if CONFIG_NETWORK && defined(AF_INET6)
3925 /* Determine if hostname is a numerical IPv6 address,
3926 * properly escape it within [] in that case. */
3927 memset(&hints, 0, sizeof(hints));
3928 hints.ai_flags = AI_NUMERICHOST;
3929 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
3930 if (ai->ai_family == AF_INET6) {
3931 av_strlcat(str, "[", size);
3932 av_strlcat(str, hostname, size);
3933 av_strlcat(str, "]", size);
3935 av_strlcat(str, hostname, size);
3940 /* Not an IPv6 address, just output the plain string. */
3941 av_strlcat(str, hostname, size);
3944 av_strlcatf(str, size, ":%d", port);
3947 int len = strlen(str);
3950 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
3956 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
3957 AVFormatContext *src)
3962 local_pkt.stream_index = dst_stream;
3963 if (pkt->pts != AV_NOPTS_VALUE)
3964 local_pkt.pts = av_rescale_q(pkt->pts,
3965 src->streams[pkt->stream_index]->time_base,
3966 dst->streams[dst_stream]->time_base);
3967 if (pkt->dts != AV_NOPTS_VALUE)
3968 local_pkt.dts = av_rescale_q(pkt->dts,
3969 src->streams[pkt->stream_index]->time_base,
3970 dst->streams[dst_stream]->time_base);
3971 return av_write_frame(dst, &local_pkt);
3974 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3977 const char *ptr = str;
3979 /* Parse key=value pairs. */
3982 char *dest = NULL, *dest_end;
3983 int key_len, dest_len = 0;
3985 /* Skip whitespace and potential commas. */
3986 while (*ptr && (isspace(*ptr) || *ptr == ','))
3993 if (!(ptr = strchr(key, '=')))
3996 key_len = ptr - key;
3998 callback_get_buf(context, key, key_len, &dest, &dest_len);
3999 dest_end = dest + dest_len - 1;
4003 while (*ptr && *ptr != '\"') {
4007 if (dest && dest < dest_end)
4011 if (dest && dest < dest_end)
4019 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4020 if (dest && dest < dest_end)
4028 int ff_find_stream_index(AVFormatContext *s, int id)
4031 for (i = 0; i < s->nb_streams; i++) {
4032 if (s->streams[i]->id == id)
4038 void ff_make_absolute_url(char *buf, int size, const char *base,
4042 /* Absolute path, relative to the current server */
4043 if (base && strstr(base, "://") && rel[0] == '/') {
4045 av_strlcpy(buf, base, size);
4046 sep = strstr(buf, "://");
4049 sep = strchr(sep, '/');
4053 av_strlcat(buf, rel, size);
4056 /* If rel actually is an absolute url, just copy it */
4057 if (!base || strstr(rel, "://") || rel[0] == '/') {
4058 av_strlcpy(buf, rel, size);
4062 av_strlcpy(buf, base, size);
4063 /* Remove the file name from the base url */
4064 sep = strrchr(buf, '/');
4069 while (av_strstart(rel, "../", NULL) && sep) {
4070 /* Remove the path delimiter at the end */
4072 sep = strrchr(buf, '/');
4073 /* If the next directory name to pop off is "..", break here */
4074 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4075 /* Readd the slash we just removed */
4076 av_strlcat(buf, "/", size);
4079 /* Cut off the directory name */
4086 av_strlcat(buf, rel, size);
4089 int64_t ff_iso8601_to_unix_time(const char *datestr)
4092 struct tm time1 = {0}, time2 = {0};
4094 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4095 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4097 return av_timegm(&time2);
4099 return av_timegm(&time1);
4101 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4102 "the date string.\n");
4107 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4110 if (ofmt->query_codec)
4111 return ofmt->query_codec(codec_id, std_compliance);
4112 else if (ofmt->codec_tag)
4113 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4114 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4115 codec_id == ofmt->subtitle_codec)
4118 return AVERROR_PATCHWELCOME;
4121 int avformat_network_init(void)
4125 ff_network_inited_globally = 1;
4126 if ((ret = ff_network_init()) < 0)
4133 int avformat_network_deinit(void)
4142 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4143 uint64_t channel_layout, int32_t sample_rate,
4144 int32_t width, int32_t height)
4150 return AVERROR(EINVAL);
4153 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4155 if (channel_layout) {
4157 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4161 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4163 if (width || height) {
4165 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4167 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4169 return AVERROR(ENOMEM);
4170 bytestream_put_le32(&data, flags);
4172 bytestream_put_le32(&data, channels);
4174 bytestream_put_le64(&data, channel_layout);
4176 bytestream_put_le32(&data, sample_rate);
4177 if (width || height) {
4178 bytestream_put_le32(&data, width);
4179 bytestream_put_le32(&data, height);