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 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
77 static int is_relative(int64_t ts) {
78 return ts > (RELATIVE_TS_BASE - (1LL<<48));
81 /* fraction handling */
84 * f = val + (num / den) + 0.5.
86 * 'num' is normalized so that it is such as 0 <= num < den.
88 * @param f fractional number
89 * @param val integer value
90 * @param num must be >= 0
91 * @param den must be >= 1
93 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
106 * Fractional addition to f: f = f + (incr / f->den).
108 * @param f fractional number
109 * @param incr increment, can be positive or negative
111 static void frac_add(AVFrac *f, int64_t incr)
124 } else if (num >= den) {
131 /** head of registered input format linked list */
132 static AVInputFormat *first_iformat = NULL;
133 /** head of registered output format linked list */
134 static AVOutputFormat *first_oformat = NULL;
136 AVInputFormat *av_iformat_next(AVInputFormat *f)
138 if(f) return f->next;
139 else return first_iformat;
142 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
144 if(f) return f->next;
145 else return first_oformat;
148 void av_register_input_format(AVInputFormat *format)
152 while (*p != NULL) p = &(*p)->next;
157 void av_register_output_format(AVOutputFormat *format)
161 while (*p != NULL) p = &(*p)->next;
166 int av_match_ext(const char *filename, const char *extensions)
174 ext = strrchr(filename, '.');
180 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
183 if (!av_strcasecmp(ext1, ext))
193 static int match_format(const char *name, const char *names)
201 namelen = strlen(name);
202 while ((p = strchr(names, ','))) {
203 len = FFMAX(p - names, namelen);
204 if (!av_strncasecmp(name, names, len))
208 return !av_strcasecmp(name, names);
211 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
212 const char *mime_type)
214 AVOutputFormat *fmt = NULL, *fmt_found;
215 int score_max, score;
217 /* specific test for image sequences */
218 #if CONFIG_IMAGE2_MUXER
219 if (!short_name && filename &&
220 av_filename_number_test(filename) &&
221 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
222 return av_guess_format("image2", NULL, NULL);
225 /* Find the proper file type. */
228 while ((fmt = av_oformat_next(fmt))) {
230 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
232 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
234 if (filename && fmt->extensions &&
235 av_match_ext(filename, fmt->extensions)) {
238 if (score > score_max) {
246 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
247 const char *filename, const char *mime_type, enum AVMediaType type){
248 if(type == AVMEDIA_TYPE_VIDEO){
249 enum CodecID codec_id= CODEC_ID_NONE;
251 #if CONFIG_IMAGE2_MUXER
252 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
253 codec_id= ff_guess_image2_codec(filename);
256 if(codec_id == CODEC_ID_NONE)
257 codec_id= fmt->video_codec;
259 }else if(type == AVMEDIA_TYPE_AUDIO)
260 return fmt->audio_codec;
261 else if (type == AVMEDIA_TYPE_SUBTITLE)
262 return fmt->subtitle_codec;
264 return CODEC_ID_NONE;
267 AVInputFormat *av_find_input_format(const char *short_name)
269 AVInputFormat *fmt = NULL;
270 while ((fmt = av_iformat_next(fmt))) {
271 if (match_format(short_name, fmt->name))
277 int ffio_limit(AVIOContext *s, int size)
280 int64_t remaining= s->maxsize - avio_tell(s);
281 if(remaining < size){
282 int64_t newsize= avio_size(s);
283 if(!s->maxsize || s->maxsize<newsize)
284 s->maxsize= newsize - !newsize;
285 remaining= s->maxsize - avio_tell(s);
286 remaining= FFMAX(remaining, 0);
289 if(s->maxsize>=0 && remaining+1 < size){
290 av_log(0, AV_LOG_ERROR, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
297 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
300 size= ffio_limit(s, size);
302 ret= av_new_packet(pkt, size);
307 pkt->pos= avio_tell(s);
309 ret= avio_read(s, pkt->data, size);
313 av_shrink_packet(pkt, ret);
318 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 old_size = pkt->size;
325 ret = av_grow_packet(pkt, size);
328 ret = avio_read(s, pkt->data + old_size, size);
329 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
334 int av_filename_number_test(const char *filename)
337 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
340 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
342 AVProbeData lpd = *pd;
343 AVInputFormat *fmt1 = NULL, *fmt;
344 int score, nodat = 0, score_max=0;
346 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
347 int id3len = ff_id3v2_tag_len(lpd.buf);
348 if (lpd.buf_size > id3len + 16) {
350 lpd.buf_size -= id3len;
356 while ((fmt1 = av_iformat_next(fmt1))) {
357 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
360 if (fmt1->read_probe) {
361 score = fmt1->read_probe(&lpd);
362 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
363 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
364 } else if (fmt1->extensions) {
365 if (av_match_ext(lpd.filename, fmt1->extensions)) {
369 if (score > score_max) {
372 }else if (score == score_max)
375 *score_ret= score_max;
380 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
383 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
384 if(score_ret > *score_max){
385 *score_max= score_ret;
391 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
393 return av_probe_input_format2(pd, is_opened, &score);
396 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
398 static const struct {
399 const char *name; enum CodecID id; enum AVMediaType type;
401 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
402 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
403 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
404 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
405 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
406 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
407 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
408 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
409 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
413 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
417 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
418 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
419 for (i = 0; fmt_id_type[i].name; i++) {
420 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
421 st->codec->codec_id = fmt_id_type[i].id;
422 st->codec->codec_type = fmt_id_type[i].type;
430 /************************************************************/
431 /* input media file */
433 int av_demuxer_open(AVFormatContext *ic){
436 if (ic->iformat->read_header) {
437 err = ic->iformat->read_header(ic);
442 if (ic->pb && !ic->data_offset)
443 ic->data_offset = avio_tell(ic->pb);
449 /** size of probe buffer, for guessing file type from file contents */
450 #define PROBE_BUF_MIN 2048
451 #define PROBE_BUF_MAX (1<<20)
453 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
454 const char *filename, void *logctx,
455 unsigned int offset, unsigned int max_probe_size)
457 AVProbeData pd = { filename ? filename : "", NULL, -offset };
458 unsigned char *buf = NULL;
459 int ret = 0, probe_size;
461 if (!max_probe_size) {
462 max_probe_size = PROBE_BUF_MAX;
463 } else if (max_probe_size > PROBE_BUF_MAX) {
464 max_probe_size = PROBE_BUF_MAX;
465 } else if (max_probe_size < PROBE_BUF_MIN) {
466 return AVERROR(EINVAL);
469 if (offset >= max_probe_size) {
470 return AVERROR(EINVAL);
473 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
474 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
475 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
476 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
479 if (probe_size < offset) {
483 /* read probe data */
484 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
487 return AVERROR(ENOMEM);
490 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
491 /* fail if error was not end of file, otherwise, lower score */
492 if (ret != AVERROR_EOF) {
497 ret = 0; /* error was end of file, nothing read */
500 pd.buf = &buf[offset];
502 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
504 /* guess file format */
505 *fmt = av_probe_input_format2(&pd, 1, &score);
507 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
508 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
510 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
516 return AVERROR_INVALIDDATA;
519 /* rewind. reuse probe buffer to avoid seeking */
520 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
526 /* open input file and probe the format if necessary */
527 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
530 AVProbeData pd = {filename, NULL, 0};
533 s->flags |= AVFMT_FLAG_CUSTOM_IO;
535 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
536 else if (s->iformat->flags & AVFMT_NOFILE)
537 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
538 "will be ignored with AVFMT_NOFILE format.\n");
542 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
543 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
546 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
547 &s->interrupt_callback, options)) < 0)
551 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
554 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
555 AVPacketList **plast_pktl){
556 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
561 (*plast_pktl)->next = pktl;
563 *packet_buffer = pktl;
565 /* add the packet in the buffered packet list */
571 static void queue_attached_pictures(AVFormatContext *s)
574 for (i = 0; i < s->nb_streams; i++)
575 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
576 s->streams[i]->discard < AVDISCARD_ALL) {
577 AVPacket copy = s->streams[i]->attached_pic;
578 copy.destruct = NULL;
579 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
583 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
585 AVFormatContext *s = *ps;
587 AVDictionary *tmp = NULL;
588 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
590 if (!s && !(s = avformat_alloc_context()))
591 return AVERROR(ENOMEM);
596 av_dict_copy(&tmp, *options, 0);
598 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
601 if ((ret = init_input(s, filename, &tmp)) < 0)
604 /* check filename in case an image number is expected */
605 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
606 if (!av_filename_number_test(filename)) {
607 ret = AVERROR(EINVAL);
612 s->duration = s->start_time = AV_NOPTS_VALUE;
613 av_strlcpy(s->filename, filename, sizeof(s->filename));
615 /* allocate private data */
616 if (s->iformat->priv_data_size > 0) {
617 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
618 ret = AVERROR(ENOMEM);
621 if (s->iformat->priv_class) {
622 *(const AVClass**)s->priv_data = s->iformat->priv_class;
623 av_opt_set_defaults(s->priv_data);
624 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
629 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
631 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
633 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
634 if ((ret = s->iformat->read_header(s)) < 0)
637 if (id3v2_extra_meta &&
638 (ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
640 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
642 queue_attached_pictures(s);
644 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
645 s->data_offset = avio_tell(s->pb);
647 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
650 av_dict_free(options);
657 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
659 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
661 avformat_free_context(s);
666 /*******************************************************/
668 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
674 AVPacketList *pktl = s->raw_packet_buffer;
678 if(s->streams[pkt->stream_index]->request_probe <= 0){
679 s->raw_packet_buffer = pktl->next;
680 s->raw_packet_buffer_remaining_size += pkt->size;
687 ret= s->iformat->read_packet(s, pkt);
689 if (!pktl || ret == AVERROR(EAGAIN))
691 for (i = 0; i < s->nb_streams; i++)
692 if(s->streams[i]->request_probe > 0)
693 s->streams[i]->request_probe = -1;
697 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
698 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
699 av_log(s, AV_LOG_WARNING,
700 "Dropped corrupted packet (stream = %d)\n",
706 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
707 av_packet_merge_side_data(pkt);
709 if(pkt->stream_index >= (unsigned)s->nb_streams){
710 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
714 st= s->streams[pkt->stream_index];
716 switch(st->codec->codec_type){
717 case AVMEDIA_TYPE_VIDEO:
718 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
720 case AVMEDIA_TYPE_AUDIO:
721 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
723 case AVMEDIA_TYPE_SUBTITLE:
724 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
728 if(!pktl && st->request_probe <= 0)
731 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
732 s->raw_packet_buffer_remaining_size -= pkt->size;
734 if(st->request_probe>0){
735 AVProbeData *pd = &st->probe_data;
737 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
740 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
741 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
742 pd->buf_size += pkt->size;
743 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
745 end= s->raw_packet_buffer_remaining_size <= 0
746 || st->probe_packets<=0;
748 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
749 int score= set_codec_from_probe_data(s, st, pd);
750 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
754 st->request_probe= -1;
755 if(st->codec->codec_id != CODEC_ID_NONE){
756 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
758 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
765 #if FF_API_READ_PACKET
766 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
768 return ff_read_packet(s, pkt);
773 /**********************************************************/
775 static int determinable_frame_size(AVCodecContext *avctx)
777 if (/*avctx->codec_id == CODEC_ID_AAC ||*/
778 avctx->codec_id == CODEC_ID_MP1 ||
779 avctx->codec_id == CODEC_ID_MP2 ||
780 avctx->codec_id == CODEC_ID_MP3/* ||
781 avctx->codec_id == CODEC_ID_CELT*/)
787 * Get the number of samples of an audio frame. Return -1 on error.
789 static int get_audio_frame_size(AVCodecContext *enc, int size, int mux)
793 /* give frame_size priority if demuxing */
794 if (!mux && enc->frame_size > 1)
795 return enc->frame_size;
797 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
800 /* fallback to using frame_size if muxing */
801 if (enc->frame_size > 1)
802 return enc->frame_size;
809 * Return the frame duration in seconds. Return 0 if not available.
811 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
812 AVCodecParserContext *pc, AVPacket *pkt)
818 switch(st->codec->codec_type) {
819 case AVMEDIA_TYPE_VIDEO:
820 if (st->r_frame_rate.num && !pc) {
821 *pnum = st->r_frame_rate.den;
822 *pden = st->r_frame_rate.num;
823 } else if(st->time_base.num*1000LL > st->time_base.den) {
824 *pnum = st->time_base.num;
825 *pden = st->time_base.den;
826 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
827 *pnum = st->codec->time_base.num;
828 *pden = st->codec->time_base.den;
829 if (pc && pc->repeat_pict) {
830 *pnum = (*pnum) * (1 + pc->repeat_pict);
832 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
833 //Thus if we have no parser in such case leave duration undefined.
834 if(st->codec->ticks_per_frame>1 && !pc){
839 case AVMEDIA_TYPE_AUDIO:
840 frame_size = get_audio_frame_size(st->codec, pkt->size, 0);
841 if (frame_size <= 0 || st->codec->sample_rate <= 0)
844 *pden = st->codec->sample_rate;
851 static int is_intra_only(AVCodecContext *enc){
852 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
854 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
855 switch(enc->codec_id){
857 case CODEC_ID_MJPEGB:
859 case CODEC_ID_PRORES:
860 case CODEC_ID_RAWVIDEO:
862 case CODEC_ID_DVVIDEO:
863 case CODEC_ID_HUFFYUV:
864 case CODEC_ID_FFVHUFF:
869 case CODEC_ID_JPEG2000:
870 case CODEC_ID_UTVIDEO:
878 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
882 if (pktl == s->parse_queue_end)
883 return s->packet_buffer;
887 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
888 int64_t dts, int64_t pts)
890 AVStream *st= s->streams[stream_index];
891 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
893 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
896 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
899 if (is_relative(pts))
900 pts += st->first_dts - RELATIVE_TS_BASE;
902 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
903 if(pktl->pkt.stream_index != stream_index)
905 if(is_relative(pktl->pkt.pts))
906 pktl->pkt.pts += st->first_dts - RELATIVE_TS_BASE;
908 if(is_relative(pktl->pkt.dts))
909 pktl->pkt.dts += st->first_dts - RELATIVE_TS_BASE;
911 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
912 st->start_time= pktl->pkt.pts;
914 if (st->start_time == AV_NOPTS_VALUE)
915 st->start_time = pts;
918 static void update_initial_durations(AVFormatContext *s, AVStream *st,
919 int stream_index, int duration)
921 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
922 int64_t cur_dts= RELATIVE_TS_BASE;
924 if(st->first_dts != AV_NOPTS_VALUE){
925 cur_dts= st->first_dts;
926 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
927 if(pktl->pkt.stream_index == stream_index){
928 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
933 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
934 st->first_dts = cur_dts;
935 }else if(st->cur_dts != RELATIVE_TS_BASE)
938 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
939 if(pktl->pkt.stream_index != stream_index)
941 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
942 && !pktl->pkt.duration){
943 pktl->pkt.dts= cur_dts;
944 if(!st->codec->has_b_frames)
945 pktl->pkt.pts= cur_dts;
946 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
947 pktl->pkt.duration = duration;
950 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
953 st->cur_dts= cur_dts;
956 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
957 AVCodecParserContext *pc, AVPacket *pkt)
959 int num, den, presentation_delayed, delay, i;
962 if (s->flags & AVFMT_FLAG_NOFILLIN)
965 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
966 pkt->dts= AV_NOPTS_VALUE;
968 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
969 //FIXME Set low_delay = 0 when has_b_frames = 1
970 st->codec->has_b_frames = 1;
972 /* do we have a video B-frame ? */
973 delay= st->codec->has_b_frames;
974 presentation_delayed = 0;
976 /* XXX: need has_b_frame, but cannot get it if the codec is
979 pc && pc->pict_type != AV_PICTURE_TYPE_B)
980 presentation_delayed = 1;
982 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){
983 pkt->dts -= 1LL<<st->pts_wrap_bits;
986 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
987 // we take the conservative approach and discard both
988 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
989 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
990 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
991 pkt->dts= AV_NOPTS_VALUE;
994 if (pkt->duration == 0) {
995 compute_frame_duration(&num, &den, st, pc, pkt);
997 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1000 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1001 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1003 /* correct timestamps with byte offset if demuxers only have timestamps
1004 on packet boundaries */
1005 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1006 /* this will estimate bitrate based on this frame's duration and size */
1007 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1008 if(pkt->pts != AV_NOPTS_VALUE)
1010 if(pkt->dts != AV_NOPTS_VALUE)
1014 if (pc && pc->dts_sync_point >= 0) {
1015 // we have synchronization info from the parser
1016 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1018 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1019 if (pkt->dts != AV_NOPTS_VALUE) {
1020 // got DTS from the stream, update reference timestamp
1021 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1022 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1023 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1024 // compute DTS based on reference timestamp
1025 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1026 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1028 if (pc->dts_sync_point > 0)
1029 st->reference_dts = pkt->dts; // new reference
1033 /* This may be redundant, but it should not hurt. */
1034 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1035 presentation_delayed = 1;
1037 // av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p duration:%d\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc, pkt->duration);
1038 /* interpolate PTS and DTS if they are not present */
1039 //We skip H264 currently because delay and has_b_frames are not reliably set
1040 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1041 if (presentation_delayed) {
1042 /* DTS = decompression timestamp */
1043 /* PTS = presentation timestamp */
1044 if (pkt->dts == AV_NOPTS_VALUE)
1045 pkt->dts = st->last_IP_pts;
1046 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1047 if (pkt->dts == AV_NOPTS_VALUE)
1048 pkt->dts = st->cur_dts;
1050 /* this is tricky: the dts must be incremented by the duration
1051 of the frame we are displaying, i.e. the last I- or P-frame */
1052 if (st->last_IP_duration == 0)
1053 st->last_IP_duration = pkt->duration;
1054 if(pkt->dts != AV_NOPTS_VALUE)
1055 st->cur_dts = pkt->dts + st->last_IP_duration;
1056 st->last_IP_duration = pkt->duration;
1057 st->last_IP_pts= pkt->pts;
1058 /* cannot compute PTS if not present (we can compute it only
1059 by knowing the future */
1060 } else if (pkt->pts != AV_NOPTS_VALUE ||
1061 pkt->dts != AV_NOPTS_VALUE ||
1063 int duration = pkt->duration;
1065 if(pkt->pts != AV_NOPTS_VALUE && duration){
1066 int64_t old_diff= FFABS(st->cur_dts - duration - pkt->pts);
1067 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1068 if( old_diff < new_diff && old_diff < (duration>>3)
1069 && (!strcmp(s->iformat->name, "mpeg") ||
1070 !strcmp(s->iformat->name, "mpegts"))){
1071 pkt->pts += duration;
1072 av_log(s, AV_LOG_WARNING, "Adjusting PTS forward\n");
1073 // 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);
1077 /* presentation is not delayed : PTS and DTS are the same */
1078 if(pkt->pts == AV_NOPTS_VALUE)
1079 pkt->pts = pkt->dts;
1080 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1081 if(pkt->pts == AV_NOPTS_VALUE)
1082 pkt->pts = st->cur_dts;
1083 pkt->dts = pkt->pts;
1084 if(pkt->pts != AV_NOPTS_VALUE)
1085 st->cur_dts = pkt->pts + duration;
1089 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1090 st->pts_buffer[0]= pkt->pts;
1091 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1092 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1093 if(pkt->dts == AV_NOPTS_VALUE)
1094 pkt->dts= st->pts_buffer[0];
1095 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1096 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1098 if(pkt->dts > st->cur_dts)
1099 st->cur_dts = pkt->dts;
1102 // 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);
1105 if(is_intra_only(st->codec))
1106 pkt->flags |= AV_PKT_FLAG_KEY;
1108 pkt->convergence_duration = pc->convergence_duration;
1111 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1114 AVPacketList *pktl = *pkt_buf;
1115 *pkt_buf = pktl->next;
1116 av_free_packet(&pktl->pkt);
1119 *pkt_buf_end = NULL;
1123 * Parse a packet, add all split parts to parse_queue
1125 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1127 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1129 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1130 AVStream *st = s->streams[stream_index];
1131 uint8_t *data = pkt ? pkt->data : NULL;
1132 int size = pkt ? pkt->size : 0;
1133 int ret = 0, got_output = 0;
1136 av_init_packet(&flush_pkt);
1139 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1140 // preserve 0-size sync packets
1141 compute_pkt_fields(s, st, st->parser, pkt);
1144 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1147 av_init_packet(&out_pkt);
1148 len = av_parser_parse2(st->parser, st->codec,
1149 &out_pkt.data, &out_pkt.size, data, size,
1150 pkt->pts, pkt->dts, pkt->pos);
1152 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1153 /* increment read pointer */
1157 got_output = !!out_pkt.size;
1162 /* set the duration */
1163 out_pkt.duration = 0;
1164 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1165 if (st->codec->sample_rate > 0) {
1166 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1167 (AVRational){ 1, st->codec->sample_rate },
1171 } else if (st->codec->time_base.num != 0 &&
1172 st->codec->time_base.den != 0) {
1173 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1174 st->codec->time_base,
1179 out_pkt.stream_index = st->index;
1180 out_pkt.pts = st->parser->pts;
1181 out_pkt.dts = st->parser->dts;
1182 out_pkt.pos = st->parser->pos;
1184 if (st->parser->key_frame == 1 ||
1185 (st->parser->key_frame == -1 &&
1186 st->parser->pict_type == AV_PICTURE_TYPE_I))
1187 out_pkt.flags |= AV_PKT_FLAG_KEY;
1189 compute_pkt_fields(s, st, st->parser, &out_pkt);
1191 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1192 out_pkt.flags & AV_PKT_FLAG_KEY) {
1193 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? out_pkt.pos : st->parser->frame_offset;
1194 ff_reduce_index(s, st->index);
1195 av_add_index_entry(st, pos, out_pkt.dts,
1196 0, 0, AVINDEX_KEYFRAME);
1199 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1200 out_pkt.destruct = pkt->destruct;
1201 pkt->destruct = NULL;
1203 if ((ret = av_dup_packet(&out_pkt)) < 0)
1206 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1207 av_free_packet(&out_pkt);
1208 ret = AVERROR(ENOMEM);
1214 /* end of the stream => close and free the parser */
1215 if (pkt == &flush_pkt) {
1216 av_parser_close(st->parser);
1221 av_free_packet(pkt);
1225 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1226 AVPacketList **pkt_buffer_end,
1230 av_assert0(*pkt_buffer);
1233 *pkt_buffer = pktl->next;
1235 *pkt_buffer_end = NULL;
1240 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1242 int ret = 0, i, got_packet = 0;
1244 av_init_packet(pkt);
1246 while (!got_packet && !s->parse_queue) {
1250 /* read next packet */
1251 ret = ff_read_packet(s, &cur_pkt);
1253 if (ret == AVERROR(EAGAIN))
1255 /* flush the parsers */
1256 for(i = 0; i < s->nb_streams; i++) {
1258 if (st->parser && st->need_parsing)
1259 parse_packet(s, NULL, st->index);
1261 /* all remaining packets are now in parse_queue =>
1262 * really terminate parsing */
1266 st = s->streams[cur_pkt.stream_index];
1268 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1269 cur_pkt.dts != AV_NOPTS_VALUE &&
1270 cur_pkt.pts < cur_pkt.dts) {
1271 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1272 cur_pkt.stream_index,
1277 if (s->debug & FF_FDEBUG_TS)
1278 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1279 cur_pkt.stream_index,
1286 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1287 st->parser = av_parser_init(st->codec->codec_id);
1289 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1290 "%s, packets or times may be invalid.\n",
1291 avcodec_get_name(st->codec->codec_id));
1292 /* no parser available: just output the raw packets */
1293 st->need_parsing = AVSTREAM_PARSE_NONE;
1294 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1295 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1296 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1297 st->parser->flags |= PARSER_FLAG_ONCE;
1301 if (!st->need_parsing || !st->parser) {
1302 /* no parsing needed: we just output the packet as is */
1304 compute_pkt_fields(s, st, NULL, pkt);
1305 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1306 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1307 ff_reduce_index(s, st->index);
1308 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1311 } else if (st->discard < AVDISCARD_ALL) {
1312 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1316 av_free_packet(&cur_pkt);
1318 if (pkt->flags & AV_PKT_FLAG_KEY)
1319 st->skip_to_keyframe = 0;
1320 if (st->skip_to_keyframe) {
1321 av_free_packet(&cur_pkt);
1326 if (!got_packet && s->parse_queue)
1327 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1329 if(s->debug & FF_FDEBUG_TS)
1330 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1341 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1343 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1348 ret = s->packet_buffer ? read_from_packet_buffer(&s->packet_buffer,
1349 &s->packet_buffer_end,
1351 read_frame_internal(s, pkt);
1356 AVPacketList *pktl = s->packet_buffer;
1359 AVPacket *next_pkt = &pktl->pkt;
1361 if (next_pkt->dts != AV_NOPTS_VALUE) {
1362 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1363 // last dts seen for this stream. if any of packets following
1364 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1365 int64_t last_dts = next_pkt->dts;
1366 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1367 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1368 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1369 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1370 next_pkt->pts = pktl->pkt.dts;
1372 if (last_dts != AV_NOPTS_VALUE) {
1373 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1374 last_dts = pktl->pkt.dts;
1379 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1380 // Fixing the last reference frame had none pts issue (For MXF etc).
1381 // We only do this when
1383 // 2. we are not able to resolve a pts value for current packet.
1384 // 3. the packets for this stream at the end of the files had valid dts.
1385 next_pkt->pts = last_dts + next_pkt->duration;
1387 pktl = s->packet_buffer;
1390 /* read packet from packet buffer, if there is data */
1391 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1392 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1393 ret = read_from_packet_buffer(&s->packet_buffer,
1394 &s->packet_buffer_end, pkt);
1399 ret = read_frame_internal(s, pkt);
1401 if (pktl && ret != AVERROR(EAGAIN)) {
1408 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1409 &s->packet_buffer_end)) < 0)
1410 return AVERROR(ENOMEM);
1414 if (is_relative(pkt->dts))
1415 pkt->dts -= RELATIVE_TS_BASE;
1416 if (is_relative(pkt->pts))
1417 pkt->pts -= RELATIVE_TS_BASE;
1421 /* XXX: suppress the packet queue */
1422 static void flush_packet_queue(AVFormatContext *s)
1424 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1425 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1426 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1428 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1431 /*******************************************************/
1434 int av_find_default_stream_index(AVFormatContext *s)
1436 int first_audio_index = -1;
1440 if (s->nb_streams <= 0)
1442 for(i = 0; i < s->nb_streams; i++) {
1444 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1445 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1448 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1449 first_audio_index = i;
1451 return first_audio_index >= 0 ? first_audio_index : 0;
1455 * Flush the frame reader.
1457 void ff_read_frame_flush(AVFormatContext *s)
1462 flush_packet_queue(s);
1464 /* for each stream, reset read state */
1465 for(i = 0; i < s->nb_streams; i++) {
1469 av_parser_close(st->parser);
1472 st->last_IP_pts = AV_NOPTS_VALUE;
1473 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1474 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1475 st->reference_dts = AV_NOPTS_VALUE;
1477 st->probe_packets = MAX_PROBE_PACKETS;
1479 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1480 st->pts_buffer[j]= AV_NOPTS_VALUE;
1484 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1488 for(i = 0; i < s->nb_streams; i++) {
1489 AVStream *st = s->streams[i];
1491 st->cur_dts = av_rescale(timestamp,
1492 st->time_base.den * (int64_t)ref_st->time_base.num,
1493 st->time_base.num * (int64_t)ref_st->time_base.den);
1497 void ff_reduce_index(AVFormatContext *s, int stream_index)
1499 AVStream *st= s->streams[stream_index];
1500 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1502 if((unsigned)st->nb_index_entries >= max_entries){
1504 for(i=0; 2*i<st->nb_index_entries; i++)
1505 st->index_entries[i]= st->index_entries[2*i];
1506 st->nb_index_entries= i;
1510 int ff_add_index_entry(AVIndexEntry **index_entries,
1511 int *nb_index_entries,
1512 unsigned int *index_entries_allocated_size,
1513 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1515 AVIndexEntry *entries, *ie;
1518 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1521 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1522 timestamp -= RELATIVE_TS_BASE;
1524 entries = av_fast_realloc(*index_entries,
1525 index_entries_allocated_size,
1526 (*nb_index_entries + 1) *
1527 sizeof(AVIndexEntry));
1531 *index_entries= entries;
1533 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1536 index= (*nb_index_entries)++;
1537 ie= &entries[index];
1538 assert(index==0 || ie[-1].timestamp < timestamp);
1540 ie= &entries[index];
1541 if(ie->timestamp != timestamp){
1542 if(ie->timestamp <= timestamp)
1544 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1545 (*nb_index_entries)++;
1546 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1547 distance= ie->min_distance;
1551 ie->timestamp = timestamp;
1552 ie->min_distance= distance;
1559 int av_add_index_entry(AVStream *st,
1560 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1562 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1563 &st->index_entries_allocated_size, pos,
1564 timestamp, size, distance, flags);
1567 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1568 int64_t wanted_timestamp, int flags)
1576 //optimize appending index entries at the end
1577 if(b && entries[b-1].timestamp < wanted_timestamp)
1582 timestamp = entries[m].timestamp;
1583 if(timestamp >= wanted_timestamp)
1585 if(timestamp <= wanted_timestamp)
1588 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1590 if(!(flags & AVSEEK_FLAG_ANY)){
1591 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1592 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1601 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1604 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1605 wanted_timestamp, flags);
1608 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1610 AVInputFormat *avif= s->iformat;
1611 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1612 int64_t ts_min, ts_max, ts;
1617 if (stream_index < 0)
1620 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1623 ts_min= AV_NOPTS_VALUE;
1624 pos_limit= -1; //gcc falsely says it may be uninitialized
1626 st= s->streams[stream_index];
1627 if(st->index_entries){
1630 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()
1631 index= FFMAX(index, 0);
1632 e= &st->index_entries[index];
1634 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1636 ts_min= e->timestamp;
1637 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1643 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1644 assert(index < st->nb_index_entries);
1646 e= &st->index_entries[index];
1647 assert(e->timestamp >= target_ts);
1649 ts_max= e->timestamp;
1650 pos_limit= pos_max - e->min_distance;
1651 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1652 pos_max,pos_limit, ts_max);
1656 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1661 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1664 ff_read_frame_flush(s);
1665 ff_update_cur_dts(s, st, ts);
1670 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1671 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1672 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1673 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1676 int64_t start_pos, filesize;
1679 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1681 if(ts_min == AV_NOPTS_VALUE){
1682 pos_min = s->data_offset;
1683 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1684 if (ts_min == AV_NOPTS_VALUE)
1688 if(ts_min >= target_ts){
1693 if(ts_max == AV_NOPTS_VALUE){
1695 filesize = avio_size(s->pb);
1696 pos_max = filesize - 1;
1699 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1701 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1702 if (ts_max == AV_NOPTS_VALUE)
1706 int64_t tmp_pos= pos_max + 1;
1707 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1708 if(tmp_ts == AV_NOPTS_VALUE)
1712 if(tmp_pos >= filesize)
1718 if(ts_max <= target_ts){
1723 if(ts_min > ts_max){
1725 }else if(ts_min == ts_max){
1730 while (pos_min < pos_limit) {
1731 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1732 pos_min, pos_max, ts_min, ts_max);
1733 assert(pos_limit <= pos_max);
1736 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1737 // interpolate position (better than dichotomy)
1738 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1739 + pos_min - approximate_keyframe_distance;
1740 }else if(no_change==1){
1741 // bisection, if interpolation failed to change min or max pos last time
1742 pos = (pos_min + pos_limit)>>1;
1744 /* linear search if bisection failed, can only happen if there
1745 are very few or no keyframes between min/max */
1750 else if(pos > pos_limit)
1754 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1759 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1760 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1761 pos_limit, start_pos, no_change);
1762 if(ts == AV_NOPTS_VALUE){
1763 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1766 assert(ts != AV_NOPTS_VALUE);
1767 if (target_ts <= ts) {
1768 pos_limit = start_pos - 1;
1772 if (target_ts >= ts) {
1778 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1779 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1782 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1784 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1785 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1786 pos, ts_min, target_ts, ts_max);
1792 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1793 int64_t pos_min, pos_max;
1795 pos_min = s->data_offset;
1796 pos_max = avio_size(s->pb) - 1;
1798 if (pos < pos_min) pos= pos_min;
1799 else if(pos > pos_max) pos= pos_max;
1801 avio_seek(s->pb, pos, SEEK_SET);
1806 static int seek_frame_generic(AVFormatContext *s,
1807 int stream_index, int64_t timestamp, int flags)
1814 st = s->streams[stream_index];
1816 index = av_index_search_timestamp(st, timestamp, flags);
1818 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1821 if(index < 0 || index==st->nb_index_entries-1){
1825 if(st->nb_index_entries){
1826 assert(st->index_entries);
1827 ie= &st->index_entries[st->nb_index_entries-1];
1828 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1830 ff_update_cur_dts(s, st, ie->timestamp);
1832 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1838 read_status = av_read_frame(s, &pkt);
1839 } while (read_status == AVERROR(EAGAIN));
1840 if (read_status < 0)
1842 av_free_packet(&pkt);
1843 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1844 if(pkt.flags & AV_PKT_FLAG_KEY)
1846 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1847 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);
1852 index = av_index_search_timestamp(st, timestamp, flags);
1857 ff_read_frame_flush(s);
1858 AV_NOWARN_DEPRECATED(
1859 if (s->iformat->read_seek){
1860 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1864 ie = &st->index_entries[index];
1865 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1867 ff_update_cur_dts(s, st, ie->timestamp);
1872 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1873 int64_t timestamp, int flags)
1878 if (flags & AVSEEK_FLAG_BYTE) {
1879 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1881 ff_read_frame_flush(s);
1882 return seek_frame_byte(s, stream_index, timestamp, flags);
1885 if(stream_index < 0){
1886 stream_index= av_find_default_stream_index(s);
1887 if(stream_index < 0)
1890 st= s->streams[stream_index];
1891 /* timestamp for default must be expressed in AV_TIME_BASE units */
1892 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1895 /* first, we try the format specific seek */
1896 AV_NOWARN_DEPRECATED(
1897 if (s->iformat->read_seek) {
1898 ff_read_frame_flush(s);
1899 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1907 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1908 ff_read_frame_flush(s);
1909 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1910 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1911 ff_read_frame_flush(s);
1912 return seek_frame_generic(s, stream_index, timestamp, flags);
1918 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1920 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
1923 queue_attached_pictures(s);
1928 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1930 if(min_ts > ts || max_ts < ts)
1933 if (s->iformat->read_seek2) {
1935 ff_read_frame_flush(s);
1936 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1939 queue_attached_pictures(s);
1943 if(s->iformat->read_timestamp){
1944 //try to seek via read_timestamp()
1947 //Fallback to old API if new is not implemented but old is
1948 //Note the old has somewat different sematics
1949 AV_NOWARN_DEPRECATED(
1950 if (s->iformat->read_seek || 1) {
1951 int dir = (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0);
1952 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
1953 if (ret<0 && ts != min_ts && max_ts != ts) {
1954 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
1956 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
1962 // try some generic seek like seek_frame_generic() but with new ts semantics
1965 /*******************************************************/
1968 * Return TRUE if the stream has accurate duration in any stream.
1970 * @return TRUE if the stream has accurate duration for at least one component.
1972 static int has_duration(AVFormatContext *ic)
1976 if(ic->duration != AV_NOPTS_VALUE)
1979 for(i = 0;i < ic->nb_streams; i++) {
1980 st = ic->streams[i];
1981 if (st->duration != AV_NOPTS_VALUE)
1990 * Estimate the stream timings from the one of each components.
1992 * Also computes the global bitrate if possible.
1994 static void update_stream_timings(AVFormatContext *ic)
1996 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1997 int64_t duration, duration1, filesize;
2001 start_time = INT64_MAX;
2002 start_time_text = INT64_MAX;
2003 end_time = INT64_MIN;
2004 duration = INT64_MIN;
2005 for(i = 0;i < ic->nb_streams; i++) {
2006 st = ic->streams[i];
2007 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2008 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2009 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2010 if (start_time1 < start_time_text)
2011 start_time_text = start_time1;
2013 start_time = FFMIN(start_time, start_time1);
2014 if (st->duration != AV_NOPTS_VALUE) {
2015 end_time1 = start_time1
2016 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2017 end_time = FFMAX(end_time, end_time1);
2020 if (st->duration != AV_NOPTS_VALUE) {
2021 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2022 duration = FFMAX(duration, duration1);
2025 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2026 start_time = start_time_text;
2027 if (start_time != INT64_MAX) {
2028 ic->start_time = start_time;
2029 if (end_time != INT64_MIN)
2030 duration = FFMAX(duration, end_time - start_time);
2032 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2033 ic->duration = duration;
2035 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2036 /* compute the bitrate */
2037 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2038 (double)ic->duration;
2042 static void fill_all_stream_timings(AVFormatContext *ic)
2047 update_stream_timings(ic);
2048 for(i = 0;i < ic->nb_streams; i++) {
2049 st = ic->streams[i];
2050 if (st->start_time == AV_NOPTS_VALUE) {
2051 if(ic->start_time != AV_NOPTS_VALUE)
2052 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2053 if(ic->duration != AV_NOPTS_VALUE)
2054 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2059 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2061 int64_t filesize, duration;
2065 /* if bit_rate is already set, we believe it */
2066 if (ic->bit_rate <= 0) {
2068 for(i=0;i<ic->nb_streams;i++) {
2069 st = ic->streams[i];
2070 if (st->codec->bit_rate > 0)
2071 bit_rate += st->codec->bit_rate;
2073 ic->bit_rate = bit_rate;
2076 /* if duration is already set, we believe it */
2077 if (ic->duration == AV_NOPTS_VALUE &&
2078 ic->bit_rate != 0) {
2079 filesize = ic->pb ? avio_size(ic->pb) : 0;
2081 for(i = 0; i < ic->nb_streams; i++) {
2082 st = ic->streams[i];
2083 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2084 if (st->duration == AV_NOPTS_VALUE)
2085 st->duration = duration;
2091 #define DURATION_MAX_READ_SIZE 250000
2092 #define DURATION_MAX_RETRY 3
2094 /* only usable for MPEG-PS streams */
2095 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2097 AVPacket pkt1, *pkt = &pkt1;
2099 int read_size, i, ret;
2101 int64_t filesize, offset, duration;
2104 /* flush packet queue */
2105 flush_packet_queue(ic);
2107 for (i=0; i<ic->nb_streams; i++) {
2108 st = ic->streams[i];
2109 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2110 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2113 av_parser_close(st->parser);
2118 /* estimate the end time (duration) */
2119 /* XXX: may need to support wrapping */
2120 filesize = ic->pb ? avio_size(ic->pb) : 0;
2121 end_time = AV_NOPTS_VALUE;
2123 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2127 avio_seek(ic->pb, offset, SEEK_SET);
2130 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2134 ret = ff_read_packet(ic, pkt);
2135 } while(ret == AVERROR(EAGAIN));
2138 read_size += pkt->size;
2139 st = ic->streams[pkt->stream_index];
2140 if (pkt->pts != AV_NOPTS_VALUE &&
2141 (st->start_time != AV_NOPTS_VALUE ||
2142 st->first_dts != AV_NOPTS_VALUE)) {
2143 duration = end_time = pkt->pts;
2144 if (st->start_time != AV_NOPTS_VALUE)
2145 duration -= st->start_time;
2147 duration -= st->first_dts;
2149 duration += 1LL<<st->pts_wrap_bits;
2151 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2152 st->duration = duration;
2155 av_free_packet(pkt);
2157 }while( end_time==AV_NOPTS_VALUE
2158 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2159 && ++retry <= DURATION_MAX_RETRY);
2161 fill_all_stream_timings(ic);
2163 avio_seek(ic->pb, old_offset, SEEK_SET);
2164 for (i=0; i<ic->nb_streams; i++) {
2166 st->cur_dts= st->first_dts;
2167 st->last_IP_pts = AV_NOPTS_VALUE;
2168 st->reference_dts = AV_NOPTS_VALUE;
2172 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2176 /* get the file size, if possible */
2177 if (ic->iformat->flags & AVFMT_NOFILE) {
2180 file_size = avio_size(ic->pb);
2181 file_size = FFMAX(0, file_size);
2184 if ((!strcmp(ic->iformat->name, "mpeg") ||
2185 !strcmp(ic->iformat->name, "mpegts")) &&
2186 file_size && ic->pb->seekable) {
2187 /* get accurate estimate from the PTSes */
2188 estimate_timings_from_pts(ic, old_offset);
2189 } else if (has_duration(ic)) {
2190 /* at least one component has timings - we use them for all
2192 fill_all_stream_timings(ic);
2194 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2195 /* less precise: use bitrate info */
2196 estimate_timings_from_bit_rate(ic);
2198 update_stream_timings(ic);
2202 AVStream av_unused *st;
2203 for(i = 0;i < ic->nb_streams; i++) {
2204 st = ic->streams[i];
2205 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2206 (double) st->start_time / AV_TIME_BASE,
2207 (double) st->duration / AV_TIME_BASE);
2209 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2210 (double) ic->start_time / AV_TIME_BASE,
2211 (double) ic->duration / AV_TIME_BASE,
2212 ic->bit_rate / 1000);
2216 static int has_codec_parameters(AVStream *st)
2218 AVCodecContext *avctx = st->codec;
2220 switch (avctx->codec_type) {
2221 case AVMEDIA_TYPE_AUDIO:
2222 val = avctx->sample_rate && avctx->channels;
2223 if (!avctx->frame_size && determinable_frame_size(avctx))
2225 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2228 case AVMEDIA_TYPE_VIDEO:
2230 if (st->info->found_decoder >= 0 && avctx->pix_fmt == PIX_FMT_NONE)
2233 case AVMEDIA_TYPE_DATA:
2234 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2239 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2242 static int has_decode_delay_been_guessed(AVStream *st)
2244 return st->codec->codec_id != CODEC_ID_H264 ||
2245 st->info->nb_decoded_frames >= 6;
2248 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2249 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2252 int got_picture = 1, ret = 0;
2254 AVPacket pkt = *avpkt;
2256 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2257 AVDictionary *thread_opt = NULL;
2259 codec = st->codec->codec ? st->codec->codec :
2260 avcodec_find_decoder(st->codec->codec_id);
2263 st->info->found_decoder = -1;
2267 /* force thread count to 1 since the h264 decoder will not extract SPS
2268 * and PPS to extradata during multi-threaded decoding */
2269 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2270 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2272 av_dict_free(&thread_opt);
2274 st->info->found_decoder = -1;
2277 st->info->found_decoder = 1;
2278 } else if (!st->info->found_decoder)
2279 st->info->found_decoder = 1;
2281 if (st->info->found_decoder < 0)
2284 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2286 (!has_codec_parameters(st) ||
2287 !has_decode_delay_been_guessed(st) ||
2288 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2290 avcodec_get_frame_defaults(&picture);
2291 switch(st->codec->codec_type) {
2292 case AVMEDIA_TYPE_VIDEO:
2293 ret = avcodec_decode_video2(st->codec, &picture,
2294 &got_picture, &pkt);
2296 case AVMEDIA_TYPE_AUDIO:
2297 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2304 st->info->nb_decoded_frames++;
2310 if(!pkt.data && !got_picture)
2315 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2317 while (tags->id != CODEC_ID_NONE) {
2325 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2328 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2329 if(tag == tags[i].tag)
2332 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2333 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2336 return CODEC_ID_NONE;
2339 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2342 for(i=0; tags && tags[i]; i++){
2343 int tag= ff_codec_get_tag(tags[i], id);
2349 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2352 for(i=0; tags && tags[i]; i++){
2353 enum CodecID id= ff_codec_get_id(tags[i], tag);
2354 if(id!=CODEC_ID_NONE) return id;
2356 return CODEC_ID_NONE;
2359 static void compute_chapters_end(AVFormatContext *s)
2362 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2364 for (i = 0; i < s->nb_chapters; i++)
2365 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2366 AVChapter *ch = s->chapters[i];
2367 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2370 for (j = 0; j < s->nb_chapters; j++) {
2371 AVChapter *ch1 = s->chapters[j];
2372 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2373 if (j != i && next_start > ch->start && next_start < end)
2376 ch->end = (end == INT64_MAX) ? ch->start : end;
2380 static int get_std_framerate(int i){
2381 if(i<60*12) return i*1001;
2382 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2386 * Is the time base unreliable.
2387 * This is a heuristic to balance between quick acceptance of the values in
2388 * the headers vs. some extra checks.
2389 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2390 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2391 * And there are "variable" fps files this needs to detect as well.
2393 static int tb_unreliable(AVCodecContext *c){
2394 if( c->time_base.den >= 101L*c->time_base.num
2395 || c->time_base.den < 5L*c->time_base.num
2396 /* || c->codec_tag == AV_RL32("DIVX")
2397 || c->codec_tag == AV_RL32("XVID")*/
2398 || c->codec_id == CODEC_ID_MPEG2VIDEO
2399 || c->codec_id == CODEC_ID_H264
2405 #if FF_API_FORMAT_PARAMETERS
2406 int av_find_stream_info(AVFormatContext *ic)
2408 return avformat_find_stream_info(ic, NULL);
2412 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2414 int i, count, ret, read_size, j;
2416 AVPacket pkt1, *pkt;
2417 int64_t old_offset = avio_tell(ic->pb);
2418 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2419 int flush_codecs = 1;
2422 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2424 for(i=0;i<ic->nb_streams;i++) {
2426 AVDictionary *thread_opt = NULL;
2427 st = ic->streams[i];
2429 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2430 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2431 /* if(!st->time_base.num)
2433 if(!st->codec->time_base.num)
2434 st->codec->time_base= st->time_base;
2436 //only for the split stuff
2437 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2438 st->parser = av_parser_init(st->codec->codec_id);
2439 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2440 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2443 codec = st->codec->codec ? st->codec->codec :
2444 avcodec_find_decoder(st->codec->codec_id);
2446 /* force thread count to 1 since the h264 decoder will not extract SPS
2447 * and PPS to extradata during multi-threaded decoding */
2448 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2450 /* Ensure that subtitle_header is properly set. */
2451 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2452 && codec && !st->codec->codec)
2453 avcodec_open2(st->codec, codec, options ? &options[i]
2456 //try to just open decoders, in case this is enough to get parameters
2457 if (!has_codec_parameters(st)) {
2458 if (codec && !st->codec->codec)
2459 avcodec_open2(st->codec, codec, options ? &options[i]
2463 av_dict_free(&thread_opt);
2466 for (i=0; i<ic->nb_streams; i++) {
2467 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2473 if (ff_check_interrupt(&ic->interrupt_callback)){
2475 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2479 /* check if one codec still needs to be handled */
2480 for(i=0;i<ic->nb_streams;i++) {
2481 int fps_analyze_framecount = 20;
2483 st = ic->streams[i];
2484 if (!has_codec_parameters(st))
2486 /* if the timebase is coarse (like the usual millisecond precision
2487 of mkv), we need to analyze more frames to reliably arrive at
2489 if (av_q2d(st->time_base) > 0.0005)
2490 fps_analyze_framecount *= 2;
2491 if (ic->fps_probe_size >= 0)
2492 fps_analyze_framecount = ic->fps_probe_size;
2493 /* variable fps and no guess at the real fps */
2494 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2495 && st->info->duration_count < fps_analyze_framecount
2496 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2498 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2500 if (st->first_dts == AV_NOPTS_VALUE &&
2501 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2502 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2505 if (i == ic->nb_streams) {
2506 /* NOTE: if the format has no header, then we need to read
2507 some packets to get most of the streams, so we cannot
2509 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2510 /* if we found the info for all the codecs, we can stop */
2512 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2517 /* we did not get all the codec info, but we read too much data */
2518 if (read_size >= ic->probesize) {
2520 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2524 /* NOTE: a new stream can be added there if no header in file
2525 (AVFMTCTX_NOHEADER) */
2526 ret = read_frame_internal(ic, &pkt1);
2527 if (ret == AVERROR(EAGAIN))
2535 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2536 if ((ret = av_dup_packet(pkt)) < 0)
2537 goto find_stream_info_err;
2539 read_size += pkt->size;
2541 st = ic->streams[pkt->stream_index];
2542 if (st->codec_info_nb_frames>1) {
2544 if (st->time_base.den > 0)
2545 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2546 if (st->avg_frame_rate.num > 0)
2547 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));
2549 if (t >= ic->max_analyze_duration) {
2550 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2553 st->info->codec_info_duration += pkt->duration;
2556 int64_t last = st->info->last_dts;
2558 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2559 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2560 int64_t duration= pkt->dts - last;
2562 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2563 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2564 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2565 int framerate= get_std_framerate(i);
2566 double sdts= dts*framerate/(1001*12);
2568 int ticks= lrintf(sdts+j*0.5);
2569 double error= sdts - ticks + j*0.5;
2570 st->info->duration_error[j][0][i] += error;
2571 st->info->duration_error[j][1][i] += error*error;
2574 st->info->duration_count++;
2575 // ignore the first 4 values, they might have some random jitter
2576 if (st->info->duration_count > 3)
2577 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2579 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2580 st->info->last_dts = pkt->dts;
2582 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2583 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2584 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2585 st->codec->extradata_size= i;
2586 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2587 if (!st->codec->extradata)
2588 return AVERROR(ENOMEM);
2589 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2590 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2594 /* if still no information, we try to open the codec and to
2595 decompress the frame. We try to avoid that in most cases as
2596 it takes longer and uses more memory. For MPEG-4, we need to
2597 decompress for QuickTime.
2599 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2600 least one frame of codec data, this makes sure the codec initializes
2601 the channel configuration and does not only trust the values from the container.
2603 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2605 st->codec_info_nb_frames++;
2610 AVPacket empty_pkt = { 0 };
2612 av_init_packet(&empty_pkt);
2614 ret = -1; /* we could not have all the codec parameters before EOF */
2615 for(i=0;i<ic->nb_streams;i++) {
2616 st = ic->streams[i];
2618 /* flush the decoders */
2619 if (st->info->found_decoder == 1) {
2621 err = try_decode_frame(st, &empty_pkt,
2622 (options && i < orig_nb_streams) ?
2623 &options[i] : NULL);
2624 } while (err > 0 && !has_codec_parameters(st));
2627 av_log(ic, AV_LOG_INFO,
2628 "decoding for stream %d failed\n", st->index);
2632 if (!has_codec_parameters(st)){
2634 avcodec_string(buf, sizeof(buf), st->codec, 0);
2635 av_log(ic, AV_LOG_WARNING,
2636 "Could not find codec parameters (%s)\n", buf);
2643 // close codecs which were opened in try_decode_frame()
2644 for(i=0;i<ic->nb_streams;i++) {
2645 st = ic->streams[i];
2646 avcodec_close(st->codec);
2648 for(i=0;i<ic->nb_streams;i++) {
2649 st = ic->streams[i];
2650 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2651 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2652 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2653 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2654 st->codec->codec_tag= tag;
2657 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2658 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2659 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2660 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2661 // the check for tb_unreliable() is not completely correct, since this is not about handling
2662 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2663 // ipmovie.c produces.
2664 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)
2665 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);
2666 if (st->info->duration_count && !st->r_frame_rate.num
2667 && tb_unreliable(st->codec) /*&&
2668 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2669 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2671 double best_error= 0.01;
2673 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2676 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2678 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2681 int n= st->info->duration_count;
2682 double a= st->info->duration_error[k][0][j] / n;
2683 double error= st->info->duration_error[k][1][j]/n - a*a;
2685 if(error < best_error && best_error> 0.000000001){
2687 num = get_std_framerate(j);
2690 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2693 // do not increase frame rate by more than 1 % in order to match a standard rate.
2694 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2695 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2698 if (!st->r_frame_rate.num){
2699 if( st->codec->time_base.den * (int64_t)st->time_base.num
2700 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2701 st->r_frame_rate.num = st->codec->time_base.den;
2702 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2704 st->r_frame_rate.num = st->time_base.den;
2705 st->r_frame_rate.den = st->time_base.num;
2708 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2709 if(!st->codec->bits_per_coded_sample)
2710 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2711 // set stream disposition based on audio service type
2712 switch (st->codec->audio_service_type) {
2713 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2714 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2715 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2716 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2717 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2718 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2719 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2720 st->disposition = AV_DISPOSITION_COMMENT; break;
2721 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2722 st->disposition = AV_DISPOSITION_KARAOKE; break;
2727 estimate_timings(ic, old_offset);
2729 compute_chapters_end(ic);
2731 find_stream_info_err:
2732 for (i=0; i < ic->nb_streams; i++) {
2733 if (ic->streams[i]->codec)
2734 ic->streams[i]->codec->thread_count = 0;
2735 av_freep(&ic->streams[i]->info);
2738 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2742 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2746 for (i = 0; i < ic->nb_programs; i++) {
2747 if (ic->programs[i] == last) {
2751 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2752 if (ic->programs[i]->stream_index[j] == s)
2753 return ic->programs[i];
2759 int av_find_best_stream(AVFormatContext *ic,
2760 enum AVMediaType type,
2761 int wanted_stream_nb,
2763 AVCodec **decoder_ret,
2766 int i, nb_streams = ic->nb_streams;
2767 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2768 unsigned *program = NULL;
2769 AVCodec *decoder = NULL, *best_decoder = NULL;
2771 if (related_stream >= 0 && wanted_stream_nb < 0) {
2772 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2774 program = p->stream_index;
2775 nb_streams = p->nb_stream_indexes;
2778 for (i = 0; i < nb_streams; i++) {
2779 int real_stream_index = program ? program[i] : i;
2780 AVStream *st = ic->streams[real_stream_index];
2781 AVCodecContext *avctx = st->codec;
2782 if (avctx->codec_type != type)
2784 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2786 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2789 decoder = avcodec_find_decoder(st->codec->codec_id);
2792 ret = AVERROR_DECODER_NOT_FOUND;
2796 if (best_count >= st->codec_info_nb_frames)
2798 best_count = st->codec_info_nb_frames;
2799 ret = real_stream_index;
2800 best_decoder = decoder;
2801 if (program && i == nb_streams - 1 && ret < 0) {
2803 nb_streams = ic->nb_streams;
2804 i = 0; /* no related stream found, try again with everything */
2808 *decoder_ret = best_decoder;
2812 /*******************************************************/
2814 int av_read_play(AVFormatContext *s)
2816 if (s->iformat->read_play)
2817 return s->iformat->read_play(s);
2819 return avio_pause(s->pb, 0);
2820 return AVERROR(ENOSYS);
2823 int av_read_pause(AVFormatContext *s)
2825 if (s->iformat->read_pause)
2826 return s->iformat->read_pause(s);
2828 return avio_pause(s->pb, 1);
2829 return AVERROR(ENOSYS);
2832 void avformat_free_context(AVFormatContext *s)
2838 if (s->iformat && s->iformat->priv_class && s->priv_data)
2839 av_opt_free(s->priv_data);
2841 for(i=0;i<s->nb_streams;i++) {
2842 /* free all data in a stream component */
2845 av_parser_close(st->parser);
2847 if (st->attached_pic.data)
2848 av_free_packet(&st->attached_pic);
2849 av_dict_free(&st->metadata);
2850 av_freep(&st->index_entries);
2851 av_freep(&st->codec->extradata);
2852 av_freep(&st->codec->subtitle_header);
2853 av_freep(&st->codec);
2854 av_freep(&st->priv_data);
2855 av_freep(&st->info);
2858 for(i=s->nb_programs-1; i>=0; i--) {
2859 av_dict_free(&s->programs[i]->metadata);
2860 av_freep(&s->programs[i]->stream_index);
2861 av_freep(&s->programs[i]);
2863 av_freep(&s->programs);
2864 av_freep(&s->priv_data);
2865 while(s->nb_chapters--) {
2866 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2867 av_freep(&s->chapters[s->nb_chapters]);
2869 av_freep(&s->chapters);
2870 av_dict_free(&s->metadata);
2871 av_freep(&s->streams);
2875 #if FF_API_CLOSE_INPUT_FILE
2876 void av_close_input_file(AVFormatContext *s)
2878 avformat_close_input(&s);
2882 void avformat_close_input(AVFormatContext **ps)
2884 AVFormatContext *s = *ps;
2885 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2887 flush_packet_queue(s);
2888 if (s->iformat && (s->iformat->read_close))
2889 s->iformat->read_close(s);
2890 avformat_free_context(s);
2896 #if FF_API_NEW_STREAM
2897 AVStream *av_new_stream(AVFormatContext *s, int id)
2899 AVStream *st = avformat_new_stream(s, NULL);
2906 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2912 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2914 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2917 s->streams = streams;
2919 st = av_mallocz(sizeof(AVStream));
2922 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2926 st->info->last_dts = AV_NOPTS_VALUE;
2928 st->codec = avcodec_alloc_context3(c);
2930 /* no default bitrate if decoding */
2931 st->codec->bit_rate = 0;
2933 st->index = s->nb_streams;
2934 st->start_time = AV_NOPTS_VALUE;
2935 st->duration = AV_NOPTS_VALUE;
2936 /* we set the current DTS to 0 so that formats without any timestamps
2937 but durations get some timestamps, formats with some unknown
2938 timestamps have their first few packets buffered and the
2939 timestamps corrected before they are returned to the user */
2940 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
2941 st->first_dts = AV_NOPTS_VALUE;
2942 st->probe_packets = MAX_PROBE_PACKETS;
2944 /* default pts setting is MPEG-like */
2945 avpriv_set_pts_info(st, 33, 1, 90000);
2946 st->last_IP_pts = AV_NOPTS_VALUE;
2947 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2948 st->pts_buffer[i]= AV_NOPTS_VALUE;
2949 st->reference_dts = AV_NOPTS_VALUE;
2951 st->sample_aspect_ratio = (AVRational){0,1};
2953 s->streams[s->nb_streams++] = st;
2957 AVProgram *av_new_program(AVFormatContext *ac, int id)
2959 AVProgram *program=NULL;
2962 av_dlog(ac, "new_program: id=0x%04x\n", id);
2964 for(i=0; i<ac->nb_programs; i++)
2965 if(ac->programs[i]->id == id)
2966 program = ac->programs[i];
2969 program = av_mallocz(sizeof(AVProgram));
2972 dynarray_add(&ac->programs, &ac->nb_programs, program);
2973 program->discard = AVDISCARD_NONE;
2980 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2982 AVChapter *chapter = NULL;
2985 for(i=0; i<s->nb_chapters; i++)
2986 if(s->chapters[i]->id == id)
2987 chapter = s->chapters[i];
2990 chapter= av_mallocz(sizeof(AVChapter));
2993 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2995 av_dict_set(&chapter->metadata, "title", title, 0);
2997 chapter->time_base= time_base;
2998 chapter->start = start;
3004 /************************************************************/
3005 /* output media file */
3007 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3008 const char *format, const char *filename)
3010 AVFormatContext *s = avformat_alloc_context();
3019 oformat = av_guess_format(format, NULL, NULL);
3021 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3022 ret = AVERROR(EINVAL);
3026 oformat = av_guess_format(NULL, filename, NULL);
3028 ret = AVERROR(EINVAL);
3029 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3036 s->oformat = oformat;
3037 if (s->oformat->priv_data_size > 0) {
3038 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3041 if (s->oformat->priv_class) {
3042 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3043 av_opt_set_defaults(s->priv_data);
3046 s->priv_data = NULL;
3049 av_strlcpy(s->filename, filename, sizeof(s->filename));
3053 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3054 ret = AVERROR(ENOMEM);
3056 avformat_free_context(s);
3060 #if FF_API_ALLOC_OUTPUT_CONTEXT
3061 AVFormatContext *avformat_alloc_output_context(const char *format,
3062 AVOutputFormat *oformat, const char *filename)
3064 AVFormatContext *avctx;
3065 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3066 return ret < 0 ? NULL : avctx;
3070 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3072 const AVCodecTag *avctag;
3074 enum CodecID id = CODEC_ID_NONE;
3075 unsigned int tag = 0;
3078 * Check that tag + id is in the table
3079 * If neither is in the table -> OK
3080 * If tag is in the table with another id -> FAIL
3081 * If id is in the table with another tag -> FAIL unless strict < normal
3083 for (n = 0; s->oformat->codec_tag[n]; n++) {
3084 avctag = s->oformat->codec_tag[n];
3085 while (avctag->id != CODEC_ID_NONE) {
3086 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3088 if (id == st->codec->codec_id)
3091 if (avctag->id == st->codec->codec_id)
3096 if (id != CODEC_ID_NONE)
3098 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3103 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3107 AVDictionary *tmp = NULL;
3110 av_dict_copy(&tmp, *options, 0);
3111 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3113 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3114 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3117 // some sanity checks
3118 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3119 av_log(s, AV_LOG_ERROR, "no streams\n");
3120 ret = AVERROR(EINVAL);
3124 for(i=0;i<s->nb_streams;i++) {
3127 switch (st->codec->codec_type) {
3128 case AVMEDIA_TYPE_AUDIO:
3129 if(st->codec->sample_rate<=0){
3130 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3131 ret = AVERROR(EINVAL);
3134 if(!st->codec->block_align)
3135 st->codec->block_align = st->codec->channels *
3136 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3138 case AVMEDIA_TYPE_VIDEO:
3139 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3140 av_log(s, AV_LOG_ERROR, "time base not set\n");
3141 ret = AVERROR(EINVAL);
3144 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3145 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3146 ret = AVERROR(EINVAL);
3149 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3150 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3152 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
3153 "(%d/%d) and encoder layer (%d/%d)\n",
3154 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3155 st->codec->sample_aspect_ratio.num,
3156 st->codec->sample_aspect_ratio.den);
3157 ret = AVERROR(EINVAL);
3163 if(s->oformat->codec_tag){
3164 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)){
3165 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3166 st->codec->codec_tag= 0;
3168 if(st->codec->codec_tag){
3169 if (!validate_codec_tag(s, st)) {
3171 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3172 av_log(s, AV_LOG_ERROR,
3173 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3174 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3175 ret = AVERROR_INVALIDDATA;
3179 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3182 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3183 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3184 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3187 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3188 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3189 if (!s->priv_data) {
3190 ret = AVERROR(ENOMEM);
3193 if (s->oformat->priv_class) {
3194 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3195 av_opt_set_defaults(s->priv_data);
3196 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3201 /* set muxer identification string */
3202 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3203 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3206 if(s->oformat->write_header){
3207 ret = s->oformat->write_header(s);
3212 /* init PTS generation */
3213 for(i=0;i<s->nb_streams;i++) {
3214 int64_t den = AV_NOPTS_VALUE;
3217 switch (st->codec->codec_type) {
3218 case AVMEDIA_TYPE_AUDIO:
3219 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3221 case AVMEDIA_TYPE_VIDEO:
3222 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3227 if (den != AV_NOPTS_VALUE) {
3229 ret = AVERROR_INVALIDDATA;
3232 frac_init(&st->pts, 0, 0, den);
3237 av_dict_free(options);
3246 //FIXME merge with compute_pkt_fields
3247 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3248 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3249 int num, den, frame_size, i;
3251 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3252 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3254 /* duration field */
3255 if (pkt->duration == 0) {
3256 compute_frame_duration(&num, &den, st, NULL, pkt);
3258 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3262 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3265 //XXX/FIXME this is a temporary hack until all encoders output pts
3266 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3269 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
3273 // pkt->pts= st->cur_dts;
3274 pkt->pts= st->pts.val;
3277 //calculate dts from pts
3278 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3279 st->pts_buffer[0]= pkt->pts;
3280 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3281 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3282 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3283 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3285 pkt->dts= st->pts_buffer[0];
3288 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)){
3289 av_log(s, AV_LOG_ERROR,
3290 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3291 st->index, st->cur_dts, pkt->dts);
3292 return AVERROR(EINVAL);
3294 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3295 av_log(s, AV_LOG_ERROR, "pts (%"PRId64") < dts (%"PRId64") in stream %d\n", pkt->pts, pkt->dts, st->index);
3296 return AVERROR(EINVAL);
3299 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3300 st->cur_dts= pkt->dts;
3301 st->pts.val= pkt->dts;
3304 switch (st->codec->codec_type) {
3305 case AVMEDIA_TYPE_AUDIO:
3306 frame_size = get_audio_frame_size(st->codec, pkt->size, 1);
3308 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3309 likely equal to the encoder delay, but it would be better if we
3310 had the real timestamps from the encoder */
3311 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3312 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3315 case AVMEDIA_TYPE_VIDEO:
3316 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3324 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3329 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3330 return s->oformat->write_packet(s, pkt);
3334 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3336 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3339 ret= s->oformat->write_packet(s, pkt);
3342 s->streams[pkt->stream_index]->nb_frames++;
3346 #define CHUNK_START 0x1000
3348 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3349 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3351 AVPacketList **next_point, *this_pktl;
3352 AVStream *st= s->streams[pkt->stream_index];
3353 int chunked= s->max_chunk_size || s->max_chunk_duration;
3355 this_pktl = av_mallocz(sizeof(AVPacketList));
3357 return AVERROR(ENOMEM);
3358 this_pktl->pkt= *pkt;
3359 pkt->destruct= NULL; // do not free original but only the copy
3360 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3362 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3363 next_point = &(st->last_in_packet_buffer->next);
3365 next_point = &s->packet_buffer;
3370 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3371 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3372 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3373 st->interleaver_chunk_size += pkt->size;
3374 st->interleaver_chunk_duration += pkt->duration;
3377 st->interleaver_chunk_size =
3378 st->interleaver_chunk_duration = 0;
3379 this_pktl->pkt.flags |= CHUNK_START;
3383 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3385 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3386 || !compare(s, &(*next_point)->pkt, pkt))){
3387 next_point= &(*next_point)->next;
3392 next_point = &(s->packet_buffer_end->next);
3395 assert(!*next_point);
3397 s->packet_buffer_end= this_pktl;
3400 this_pktl->next= *next_point;
3402 s->streams[pkt->stream_index]->last_in_packet_buffer=
3403 *next_point= this_pktl;
3407 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3409 AVStream *st = s->streams[ pkt ->stream_index];
3410 AVStream *st2= s->streams[ next->stream_index];
3411 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3413 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3414 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);
3415 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);
3417 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
3418 -( 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;
3421 comp= (ts>ts2) - (ts<ts2);
3425 return pkt->stream_index < next->stream_index;
3429 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3430 AVPacket *pkt, int flush)
3433 int stream_count=0, noninterleaved_count=0;
3434 int64_t delta_dts_max = 0;
3438 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3443 for(i=0; i < s->nb_streams; i++) {
3444 if (s->streams[i]->last_in_packet_buffer) {
3446 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3447 ++noninterleaved_count;
3451 if (s->nb_streams == stream_count) {
3454 for(i=0; i < s->nb_streams; i++) {
3455 if (s->streams[i]->last_in_packet_buffer) {
3457 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3458 s->streams[i]->time_base,
3460 av_rescale_q(s->packet_buffer->pkt.dts,
3461 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3463 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3466 if(s->nb_streams == stream_count+noninterleaved_count &&
3467 delta_dts_max > 20*AV_TIME_BASE) {
3468 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3472 if(stream_count && flush){
3473 pktl= s->packet_buffer;
3476 s->packet_buffer= pktl->next;
3477 if(!s->packet_buffer)
3478 s->packet_buffer_end= NULL;
3480 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3481 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3485 av_init_packet(out);
3490 #if FF_API_INTERLEAVE_PACKET
3491 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3492 AVPacket *pkt, int flush)
3494 return ff_interleave_packet_per_dts(s, out, pkt, flush);
3499 * Interleave an AVPacket correctly so it can be muxed.
3500 * @param out the interleaved packet will be output here
3501 * @param in the input packet
3502 * @param flush 1 if no further packets are available as input and all
3503 * remaining packets should be output
3504 * @return 1 if a packet was output, 0 if no packet could be output,
3505 * < 0 if an error occurred
3507 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3508 if (s->oformat->interleave_packet) {
3509 int ret = s->oformat->interleave_packet(s, out, in, flush);
3514 return ff_interleave_packet_per_dts(s, out, in, flush);
3517 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3521 AVStream *st= s->streams[ pkt->stream_index];
3523 //FIXME/XXX/HACK drop zero sized packets
3524 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3527 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3528 pkt->size, pkt->dts, pkt->pts);
3529 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3532 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3533 return AVERROR(EINVAL);
3535 av_dlog(s, "av_interleaved_write_frame FLUSH\n");
3541 int ret= interleave_packet(s, &opkt, pkt, flush);
3542 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3545 ret= s->oformat->write_packet(s, &opkt);
3547 s->streams[opkt.stream_index]->nb_frames++;
3549 av_free_packet(&opkt);
3554 if(s->pb && s->pb->error)
3555 return s->pb->error;
3559 int av_write_trailer(AVFormatContext *s)
3565 ret= interleave_packet(s, &pkt, NULL, 1);
3566 if(ret<0) //FIXME cleanup needed for ret<0 ?
3571 ret= s->oformat->write_packet(s, &pkt);
3573 s->streams[pkt.stream_index]->nb_frames++;
3575 av_free_packet(&pkt);
3579 if(s->pb && s->pb->error)
3583 if(s->oformat->write_trailer)
3584 ret = s->oformat->write_trailer(s);
3589 ret = s->pb ? s->pb->error : 0;
3590 for(i=0;i<s->nb_streams;i++) {
3591 av_freep(&s->streams[i]->priv_data);
3592 av_freep(&s->streams[i]->index_entries);
3594 if (s->oformat->priv_class)
3595 av_opt_free(s->priv_data);
3596 av_freep(&s->priv_data);
3600 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3601 int64_t *dts, int64_t *wall)
3603 if (!s->oformat || !s->oformat->get_output_timestamp)
3604 return AVERROR(ENOSYS);
3605 s->oformat->get_output_timestamp(s, stream, dts, wall);
3609 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3612 AVProgram *program=NULL;
3615 if (idx >= ac->nb_streams) {
3616 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3620 for(i=0; i<ac->nb_programs; i++){
3621 if(ac->programs[i]->id != progid)
3623 program = ac->programs[i];
3624 for(j=0; j<program->nb_stream_indexes; j++)
3625 if(program->stream_index[j] == idx)
3628 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3631 program->stream_index = tmp;
3632 program->stream_index[program->nb_stream_indexes++] = idx;
3637 static void print_fps(double d, const char *postfix){
3638 uint64_t v= lrintf(d*100);
3639 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3640 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3641 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3644 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3646 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3647 AVDictionaryEntry *tag=NULL;
3649 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3650 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3651 if(strcmp("language", tag->key)){
3652 const char *p = tag->value;
3653 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3656 size_t len = strcspn(p, "\xd\xa");
3657 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3658 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3660 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3661 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3664 av_log(ctx, AV_LOG_INFO, "\n");
3670 /* "user interface" functions */
3671 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3674 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3675 AVStream *st = ic->streams[i];
3676 int g = av_gcd(st->time_base.num, st->time_base.den);
3677 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3678 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3679 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3680 /* the pid is an important information, so we display it */
3681 /* XXX: add a generic system */
3682 if (flags & AVFMT_SHOW_IDS)
3683 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3685 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3686 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3687 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3688 if (st->sample_aspect_ratio.num && // default
3689 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3690 AVRational display_aspect_ratio;
3691 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3692 st->codec->width*st->sample_aspect_ratio.num,
3693 st->codec->height*st->sample_aspect_ratio.den,
3695 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3696 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3697 display_aspect_ratio.num, display_aspect_ratio.den);
3699 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3700 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3701 print_fps(av_q2d(st->avg_frame_rate), "fps");
3702 if(st->r_frame_rate.den && st->r_frame_rate.num)
3703 print_fps(av_q2d(st->r_frame_rate), "tbr");
3704 if(st->time_base.den && st->time_base.num)
3705 print_fps(1/av_q2d(st->time_base), "tbn");
3706 if(st->codec->time_base.den && st->codec->time_base.num)
3707 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3709 if (st->disposition & AV_DISPOSITION_DEFAULT)
3710 av_log(NULL, AV_LOG_INFO, " (default)");
3711 if (st->disposition & AV_DISPOSITION_DUB)
3712 av_log(NULL, AV_LOG_INFO, " (dub)");
3713 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3714 av_log(NULL, AV_LOG_INFO, " (original)");
3715 if (st->disposition & AV_DISPOSITION_COMMENT)
3716 av_log(NULL, AV_LOG_INFO, " (comment)");
3717 if (st->disposition & AV_DISPOSITION_LYRICS)
3718 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3719 if (st->disposition & AV_DISPOSITION_KARAOKE)
3720 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3721 if (st->disposition & AV_DISPOSITION_FORCED)
3722 av_log(NULL, AV_LOG_INFO, " (forced)");
3723 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3724 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3725 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3726 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3727 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3728 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3729 av_log(NULL, AV_LOG_INFO, "\n");
3730 dump_metadata(NULL, st->metadata, " ");
3733 void av_dump_format(AVFormatContext *ic,
3739 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3740 if (ic->nb_streams && !printed)
3743 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3744 is_output ? "Output" : "Input",
3746 is_output ? ic->oformat->name : ic->iformat->name,
3747 is_output ? "to" : "from", url);
3748 dump_metadata(NULL, ic->metadata, " ");
3750 av_log(NULL, AV_LOG_INFO, " Duration: ");
3751 if (ic->duration != AV_NOPTS_VALUE) {
3752 int hours, mins, secs, us;
3753 secs = ic->duration / AV_TIME_BASE;
3754 us = ic->duration % AV_TIME_BASE;
3759 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3760 (100 * us) / AV_TIME_BASE);
3762 av_log(NULL, AV_LOG_INFO, "N/A");
3764 if (ic->start_time != AV_NOPTS_VALUE) {
3766 av_log(NULL, AV_LOG_INFO, ", start: ");
3767 secs = ic->start_time / AV_TIME_BASE;
3768 us = abs(ic->start_time % AV_TIME_BASE);
3769 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3770 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3772 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3774 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3776 av_log(NULL, AV_LOG_INFO, "N/A");
3778 av_log(NULL, AV_LOG_INFO, "\n");
3780 for (i = 0; i < ic->nb_chapters; i++) {
3781 AVChapter *ch = ic->chapters[i];
3782 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3783 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3784 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3786 dump_metadata(NULL, ch->metadata, " ");
3788 if(ic->nb_programs) {
3789 int j, k, total = 0;
3790 for(j=0; j<ic->nb_programs; j++) {
3791 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3793 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3794 name ? name->value : "");
3795 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3796 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3797 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3798 printed[ic->programs[j]->stream_index[k]] = 1;
3800 total += ic->programs[j]->nb_stream_indexes;
3802 if (total < ic->nb_streams)
3803 av_log(NULL, AV_LOG_INFO, " No Program\n");
3805 for(i=0;i<ic->nb_streams;i++)
3807 dump_stream_format(ic, i, index, is_output);
3812 int64_t av_gettime(void)
3815 gettimeofday(&tv,NULL);
3816 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3819 uint64_t ff_ntp_time(void)
3821 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3824 int av_get_frame_filename(char *buf, int buf_size,
3825 const char *path, int number)
3828 char *q, buf1[20], c;
3829 int nd, len, percentd_found;
3841 while (isdigit(*p)) {
3842 nd = nd * 10 + *p++ - '0';
3845 } while (isdigit(c));
3854 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3856 if ((q - buf + len) > buf_size - 1)
3858 memcpy(q, buf1, len);
3866 if ((q - buf) < buf_size - 1)
3870 if (!percentd_found)
3879 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3883 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3885 for(i=0;i<size;i+=16) {
3892 PRINT(" %02x", buf[i+j]);
3897 for(j=0;j<len;j++) {
3899 if (c < ' ' || c > '~')
3908 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3910 hex_dump_internal(NULL, f, 0, buf, size);
3913 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3915 hex_dump_internal(avcl, NULL, level, buf, size);
3918 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3921 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3922 PRINT("stream #%d:\n", pkt->stream_index);
3923 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3924 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3925 /* DTS is _always_ valid after av_read_frame() */
3927 if (pkt->dts == AV_NOPTS_VALUE)
3930 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3931 /* PTS may not be known if B-frames are present. */
3933 if (pkt->pts == AV_NOPTS_VALUE)
3936 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3938 PRINT(" size=%d\n", pkt->size);
3941 av_hex_dump(f, pkt->data, pkt->size);
3945 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3947 AVRational tb = { 1, AV_TIME_BASE };
3948 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3952 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3954 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3958 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3960 AVRational tb = { 1, AV_TIME_BASE };
3961 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3965 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3968 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3971 void av_url_split(char *proto, int proto_size,
3972 char *authorization, int authorization_size,
3973 char *hostname, int hostname_size,
3975 char *path, int path_size,
3978 const char *p, *ls, *at, *col, *brk;
3980 if (port_ptr) *port_ptr = -1;
3981 if (proto_size > 0) proto[0] = 0;
3982 if (authorization_size > 0) authorization[0] = 0;
3983 if (hostname_size > 0) hostname[0] = 0;
3984 if (path_size > 0) path[0] = 0;
3986 /* parse protocol */
3987 if ((p = strchr(url, ':'))) {
3988 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3993 /* no protocol means plain filename */
3994 av_strlcpy(path, url, path_size);
3998 /* separate path from hostname */
3999 ls = strchr(p, '/');
4001 ls = strchr(p, '?');
4003 av_strlcpy(path, ls, path_size);
4005 ls = &p[strlen(p)]; // XXX
4007 /* the rest is hostname, use that to parse auth/port */
4009 /* authorization (user[:pass]@hostname) */
4010 if ((at = strchr(p, '@')) && at < ls) {
4011 av_strlcpy(authorization, p,
4012 FFMIN(authorization_size, at + 1 - p));
4013 p = at + 1; /* skip '@' */
4016 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4018 av_strlcpy(hostname, p + 1,
4019 FFMIN(hostname_size, brk - p));
4020 if (brk[1] == ':' && port_ptr)
4021 *port_ptr = atoi(brk + 2);
4022 } else if ((col = strchr(p, ':')) && col < ls) {
4023 av_strlcpy(hostname, p,
4024 FFMIN(col + 1 - p, hostname_size));
4025 if (port_ptr) *port_ptr = atoi(col + 1);
4027 av_strlcpy(hostname, p,
4028 FFMIN(ls + 1 - p, hostname_size));
4032 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4035 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4038 'C', 'D', 'E', 'F' };
4039 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4042 'c', 'd', 'e', 'f' };
4043 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4045 for(i = 0; i < s; i++) {
4046 buff[i * 2] = hex_table[src[i] >> 4];
4047 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4053 int ff_hex_to_data(uint8_t *data, const char *p)
4060 p += strspn(p, SPACE_CHARS);
4063 c = toupper((unsigned char) *p++);
4064 if (c >= '0' && c <= '9')
4066 else if (c >= 'A' && c <= 'F')
4081 #if FF_API_SET_PTS_INFO
4082 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4083 unsigned int pts_num, unsigned int pts_den)
4085 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4089 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4090 unsigned int pts_num, unsigned int pts_den)
4093 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4094 if(new_tb.num != pts_num)
4095 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4097 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4099 if(new_tb.num <= 0 || new_tb.den <= 0) {
4100 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
4103 s->time_base = new_tb;
4104 s->pts_wrap_bits = pts_wrap_bits;
4107 int ff_url_join(char *str, int size, const char *proto,
4108 const char *authorization, const char *hostname,
4109 int port, const char *fmt, ...)
4112 struct addrinfo hints = { 0 }, *ai;
4117 av_strlcatf(str, size, "%s://", proto);
4118 if (authorization && authorization[0])
4119 av_strlcatf(str, size, "%s@", authorization);
4120 #if CONFIG_NETWORK && defined(AF_INET6)
4121 /* Determine if hostname is a numerical IPv6 address,
4122 * properly escape it within [] in that case. */
4123 hints.ai_flags = AI_NUMERICHOST;
4124 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4125 if (ai->ai_family == AF_INET6) {
4126 av_strlcat(str, "[", size);
4127 av_strlcat(str, hostname, size);
4128 av_strlcat(str, "]", size);
4130 av_strlcat(str, hostname, size);
4135 /* Not an IPv6 address, just output the plain string. */
4136 av_strlcat(str, hostname, size);
4139 av_strlcatf(str, size, ":%d", port);
4142 int len = strlen(str);
4145 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4151 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4152 AVFormatContext *src)
4157 local_pkt.stream_index = dst_stream;
4158 if (pkt->pts != AV_NOPTS_VALUE)
4159 local_pkt.pts = av_rescale_q(pkt->pts,
4160 src->streams[pkt->stream_index]->time_base,
4161 dst->streams[dst_stream]->time_base);
4162 if (pkt->dts != AV_NOPTS_VALUE)
4163 local_pkt.dts = av_rescale_q(pkt->dts,
4164 src->streams[pkt->stream_index]->time_base,
4165 dst->streams[dst_stream]->time_base);
4166 return av_write_frame(dst, &local_pkt);
4169 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4172 const char *ptr = str;
4174 /* Parse key=value pairs. */
4177 char *dest = NULL, *dest_end;
4178 int key_len, dest_len = 0;
4180 /* Skip whitespace and potential commas. */
4181 while (*ptr && (isspace(*ptr) || *ptr == ','))
4188 if (!(ptr = strchr(key, '=')))
4191 key_len = ptr - key;
4193 callback_get_buf(context, key, key_len, &dest, &dest_len);
4194 dest_end = dest + dest_len - 1;
4198 while (*ptr && *ptr != '\"') {
4202 if (dest && dest < dest_end)
4206 if (dest && dest < dest_end)
4214 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4215 if (dest && dest < dest_end)
4223 int ff_find_stream_index(AVFormatContext *s, int id)
4226 for (i = 0; i < s->nb_streams; i++) {
4227 if (s->streams[i]->id == id)
4233 void ff_make_absolute_url(char *buf, int size, const char *base,
4237 /* Absolute path, relative to the current server */
4238 if (base && strstr(base, "://") && rel[0] == '/') {
4240 av_strlcpy(buf, base, size);
4241 sep = strstr(buf, "://");
4244 sep = strchr(sep, '/');
4248 av_strlcat(buf, rel, size);
4251 /* If rel actually is an absolute url, just copy it */
4252 if (!base || strstr(rel, "://") || rel[0] == '/') {
4253 av_strlcpy(buf, rel, size);
4257 av_strlcpy(buf, base, size);
4258 /* Remove the file name from the base url */
4259 sep = strrchr(buf, '/');
4264 while (av_strstart(rel, "../", NULL) && sep) {
4265 /* Remove the path delimiter at the end */
4267 sep = strrchr(buf, '/');
4268 /* If the next directory name to pop off is "..", break here */
4269 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4270 /* Readd the slash we just removed */
4271 av_strlcat(buf, "/", size);
4274 /* Cut off the directory name */
4281 av_strlcat(buf, rel, size);
4284 int64_t ff_iso8601_to_unix_time(const char *datestr)
4287 struct tm time1 = {0}, time2 = {0};
4289 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4290 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4292 return av_timegm(&time2);
4294 return av_timegm(&time1);
4296 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4297 "the date string.\n");
4302 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4305 if (ofmt->query_codec)
4306 return ofmt->query_codec(codec_id, std_compliance);
4307 else if (ofmt->codec_tag)
4308 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4309 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4310 codec_id == ofmt->subtitle_codec)
4313 return AVERROR_PATCHWELCOME;
4316 int avformat_network_init(void)
4320 ff_network_inited_globally = 1;
4321 if ((ret = ff_network_init()) < 0)
4328 int avformat_network_deinit(void)
4337 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4338 uint64_t channel_layout, int32_t sample_rate,
4339 int32_t width, int32_t height)
4345 return AVERROR(EINVAL);
4348 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4350 if (channel_layout) {
4352 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4356 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4358 if (width || height) {
4360 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4362 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4364 return AVERROR(ENOMEM);
4365 bytestream_put_le32(&data, flags);
4367 bytestream_put_le32(&data, channels);
4369 bytestream_put_le64(&data, channel_layout);
4371 bytestream_put_le32(&data, sample_rate);
4372 if (width || height) {
4373 bytestream_put_le32(&data, width);
4374 bytestream_put_le32(&data, height);
4379 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4381 return ff_codec_bmp_tags;
4383 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4385 return ff_codec_wav_tags;