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 int orig_size = size;
301 size= ffio_limit(s, size);
303 ret= av_new_packet(pkt, size);
308 pkt->pos= avio_tell(s);
310 ret= avio_read(s, pkt->data, size);
314 av_shrink_packet(pkt, ret);
315 if (pkt->size < orig_size)
316 pkt->flags |= AV_PKT_FLAG_CORRUPT;
321 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
326 return av_get_packet(s, pkt, size);
327 old_size = pkt->size;
328 ret = av_grow_packet(pkt, size);
331 ret = avio_read(s, pkt->data + old_size, size);
332 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
337 int av_filename_number_test(const char *filename)
340 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
343 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
345 AVProbeData lpd = *pd;
346 AVInputFormat *fmt1 = NULL, *fmt;
347 int score, nodat = 0, score_max=0;
349 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
350 int id3len = ff_id3v2_tag_len(lpd.buf);
351 if (lpd.buf_size > id3len + 16) {
353 lpd.buf_size -= id3len;
359 while ((fmt1 = av_iformat_next(fmt1))) {
360 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
363 if (fmt1->read_probe) {
364 score = fmt1->read_probe(&lpd);
365 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
366 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
367 } else if (fmt1->extensions) {
368 if (av_match_ext(lpd.filename, fmt1->extensions)) {
372 if (score > score_max) {
375 }else if (score == score_max)
378 *score_ret= score_max;
383 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
386 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
387 if(score_ret > *score_max){
388 *score_max= score_ret;
394 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
396 return av_probe_input_format2(pd, is_opened, &score);
399 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
401 static const struct {
402 const char *name; enum CodecID id; enum AVMediaType type;
404 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
405 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
406 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
407 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
408 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
409 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
410 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
411 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
412 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
416 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
420 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
421 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
422 for (i = 0; fmt_id_type[i].name; i++) {
423 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
424 st->codec->codec_id = fmt_id_type[i].id;
425 st->codec->codec_type = fmt_id_type[i].type;
433 /************************************************************/
434 /* input media file */
436 int av_demuxer_open(AVFormatContext *ic){
439 if (ic->iformat->read_header) {
440 err = ic->iformat->read_header(ic);
445 if (ic->pb && !ic->data_offset)
446 ic->data_offset = avio_tell(ic->pb);
452 /** size of probe buffer, for guessing file type from file contents */
453 #define PROBE_BUF_MIN 2048
454 #define PROBE_BUF_MAX (1<<20)
456 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
457 const char *filename, void *logctx,
458 unsigned int offset, unsigned int max_probe_size)
460 AVProbeData pd = { filename ? filename : "", NULL, -offset };
461 unsigned char *buf = NULL;
462 int ret = 0, probe_size;
464 if (!max_probe_size) {
465 max_probe_size = PROBE_BUF_MAX;
466 } else if (max_probe_size > PROBE_BUF_MAX) {
467 max_probe_size = PROBE_BUF_MAX;
468 } else if (max_probe_size < PROBE_BUF_MIN) {
469 return AVERROR(EINVAL);
472 if (offset >= max_probe_size) {
473 return AVERROR(EINVAL);
476 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
477 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
478 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
479 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
482 if (probe_size < offset) {
486 /* read probe data */
487 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
490 return AVERROR(ENOMEM);
493 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
494 /* fail if error was not end of file, otherwise, lower score */
495 if (ret != AVERROR_EOF) {
500 ret = 0; /* error was end of file, nothing read */
503 pd.buf = &buf[offset];
505 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
507 /* guess file format */
508 *fmt = av_probe_input_format2(&pd, 1, &score);
510 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
511 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
513 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
519 return AVERROR_INVALIDDATA;
522 /* rewind. reuse probe buffer to avoid seeking */
523 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
529 /* open input file and probe the format if necessary */
530 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
533 AVProbeData pd = {filename, NULL, 0};
536 s->flags |= AVFMT_FLAG_CUSTOM_IO;
538 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
539 else if (s->iformat->flags & AVFMT_NOFILE)
540 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
541 "will be ignored with AVFMT_NOFILE format.\n");
545 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
546 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
549 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
550 &s->interrupt_callback, options)) < 0)
554 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
557 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
558 AVPacketList **plast_pktl){
559 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
564 (*plast_pktl)->next = pktl;
566 *packet_buffer = pktl;
568 /* add the packet in the buffered packet list */
574 static void queue_attached_pictures(AVFormatContext *s)
577 for (i = 0; i < s->nb_streams; i++)
578 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
579 s->streams[i]->discard < AVDISCARD_ALL) {
580 AVPacket copy = s->streams[i]->attached_pic;
581 copy.destruct = NULL;
582 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
586 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
588 AVFormatContext *s = *ps;
590 AVDictionary *tmp = NULL;
591 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
593 if (!s && !(s = avformat_alloc_context()))
594 return AVERROR(ENOMEM);
596 av_log(0, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
597 return AVERROR(EINVAL);
603 av_dict_copy(&tmp, *options, 0);
605 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
608 if ((ret = init_input(s, filename, &tmp)) < 0)
611 /* check filename in case an image number is expected */
612 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
613 if (!av_filename_number_test(filename)) {
614 ret = AVERROR(EINVAL);
619 s->duration = s->start_time = AV_NOPTS_VALUE;
620 av_strlcpy(s->filename, filename, sizeof(s->filename));
622 /* allocate private data */
623 if (s->iformat->priv_data_size > 0) {
624 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
625 ret = AVERROR(ENOMEM);
628 if (s->iformat->priv_class) {
629 *(const AVClass**)s->priv_data = s->iformat->priv_class;
630 av_opt_set_defaults(s->priv_data);
631 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
636 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
638 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
640 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
641 if ((ret = s->iformat->read_header(s)) < 0)
644 if (id3v2_extra_meta &&
645 (ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
647 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
649 queue_attached_pictures(s);
651 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
652 s->data_offset = avio_tell(s->pb);
654 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
657 av_dict_free(options);
664 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
666 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
668 avformat_free_context(s);
673 /*******************************************************/
675 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
681 AVPacketList *pktl = s->raw_packet_buffer;
685 if(s->streams[pkt->stream_index]->request_probe <= 0){
686 s->raw_packet_buffer = pktl->next;
687 s->raw_packet_buffer_remaining_size += pkt->size;
694 ret= s->iformat->read_packet(s, pkt);
696 if (!pktl || ret == AVERROR(EAGAIN))
698 for (i = 0; i < s->nb_streams; i++)
699 if(s->streams[i]->request_probe > 0)
700 s->streams[i]->request_probe = -1;
704 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
705 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
706 av_log(s, AV_LOG_WARNING,
707 "Dropped corrupted packet (stream = %d)\n",
713 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
714 av_packet_merge_side_data(pkt);
716 if(pkt->stream_index >= (unsigned)s->nb_streams){
717 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
721 st= s->streams[pkt->stream_index];
723 switch(st->codec->codec_type){
724 case AVMEDIA_TYPE_VIDEO:
725 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
727 case AVMEDIA_TYPE_AUDIO:
728 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
730 case AVMEDIA_TYPE_SUBTITLE:
731 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
735 if(!pktl && st->request_probe <= 0)
738 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
739 s->raw_packet_buffer_remaining_size -= pkt->size;
741 if(st->request_probe>0){
742 AVProbeData *pd = &st->probe_data;
744 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
747 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
748 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
749 pd->buf_size += pkt->size;
750 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
752 end= s->raw_packet_buffer_remaining_size <= 0
753 || st->probe_packets<=0;
755 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
756 int score= set_codec_from_probe_data(s, st, pd);
757 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
761 st->request_probe= -1;
762 if(st->codec->codec_id != CODEC_ID_NONE){
763 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
765 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
772 #if FF_API_READ_PACKET
773 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
775 return ff_read_packet(s, pkt);
780 /**********************************************************/
782 static int determinable_frame_size(AVCodecContext *avctx)
784 if (/*avctx->codec_id == CODEC_ID_AAC ||*/
785 avctx->codec_id == CODEC_ID_MP1 ||
786 avctx->codec_id == CODEC_ID_MP2 ||
787 avctx->codec_id == CODEC_ID_MP3/* ||
788 avctx->codec_id == CODEC_ID_CELT*/)
794 * Get the number of samples of an audio frame. Return -1 on error.
796 static int get_audio_frame_size(AVCodecContext *enc, int size, int mux)
800 /* give frame_size priority if demuxing */
801 if (!mux && enc->frame_size > 1)
802 return enc->frame_size;
804 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
807 /* fallback to using frame_size if muxing */
808 if (enc->frame_size > 1)
809 return enc->frame_size;
816 * Return the frame duration in seconds. Return 0 if not available.
818 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
819 AVCodecParserContext *pc, AVPacket *pkt)
825 switch(st->codec->codec_type) {
826 case AVMEDIA_TYPE_VIDEO:
827 if (st->r_frame_rate.num && !pc) {
828 *pnum = st->r_frame_rate.den;
829 *pden = st->r_frame_rate.num;
830 } else if(st->time_base.num*1000LL > st->time_base.den) {
831 *pnum = st->time_base.num;
832 *pden = st->time_base.den;
833 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
834 *pnum = st->codec->time_base.num;
835 *pden = st->codec->time_base.den;
836 if (pc && pc->repeat_pict) {
837 *pnum = (*pnum) * (1 + pc->repeat_pict);
839 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
840 //Thus if we have no parser in such case leave duration undefined.
841 if(st->codec->ticks_per_frame>1 && !pc){
846 case AVMEDIA_TYPE_AUDIO:
847 frame_size = get_audio_frame_size(st->codec, pkt->size, 0);
848 if (frame_size <= 0 || st->codec->sample_rate <= 0)
851 *pden = st->codec->sample_rate;
858 static int is_intra_only(AVCodecContext *enc){
859 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
861 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
862 switch(enc->codec_id){
864 case CODEC_ID_MJPEGB:
866 case CODEC_ID_PRORES:
867 case CODEC_ID_RAWVIDEO:
869 case CODEC_ID_DVVIDEO:
870 case CODEC_ID_HUFFYUV:
871 case CODEC_ID_FFVHUFF:
876 case CODEC_ID_JPEG2000:
877 case CODEC_ID_UTVIDEO:
885 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
889 if (pktl == s->parse_queue_end)
890 return s->packet_buffer;
894 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
895 int64_t dts, int64_t pts)
897 AVStream *st= s->streams[stream_index];
898 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
900 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
903 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
906 if (is_relative(pts))
907 pts += st->first_dts - RELATIVE_TS_BASE;
909 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
910 if(pktl->pkt.stream_index != stream_index)
912 if(is_relative(pktl->pkt.pts))
913 pktl->pkt.pts += st->first_dts - RELATIVE_TS_BASE;
915 if(is_relative(pktl->pkt.dts))
916 pktl->pkt.dts += st->first_dts - RELATIVE_TS_BASE;
918 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
919 st->start_time= pktl->pkt.pts;
921 if (st->start_time == AV_NOPTS_VALUE)
922 st->start_time = pts;
925 static void update_initial_durations(AVFormatContext *s, AVStream *st,
926 int stream_index, int duration)
928 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
929 int64_t cur_dts= RELATIVE_TS_BASE;
931 if(st->first_dts != AV_NOPTS_VALUE){
932 cur_dts= st->first_dts;
933 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
934 if(pktl->pkt.stream_index == stream_index){
935 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
940 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
941 st->first_dts = cur_dts;
942 }else if(st->cur_dts != RELATIVE_TS_BASE)
945 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
946 if(pktl->pkt.stream_index != stream_index)
948 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
949 && !pktl->pkt.duration){
950 pktl->pkt.dts= cur_dts;
951 if(!st->codec->has_b_frames)
952 pktl->pkt.pts= cur_dts;
953 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
954 pktl->pkt.duration = duration;
957 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
960 st->cur_dts= cur_dts;
963 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
964 AVCodecParserContext *pc, AVPacket *pkt)
966 int num, den, presentation_delayed, delay, i;
969 if (s->flags & AVFMT_FLAG_NOFILLIN)
972 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
973 pkt->dts= AV_NOPTS_VALUE;
975 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
976 //FIXME Set low_delay = 0 when has_b_frames = 1
977 st->codec->has_b_frames = 1;
979 /* do we have a video B-frame ? */
980 delay= st->codec->has_b_frames;
981 presentation_delayed = 0;
983 /* XXX: need has_b_frame, but cannot get it if the codec is
986 pc && pc->pict_type != AV_PICTURE_TYPE_B)
987 presentation_delayed = 1;
989 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){
990 pkt->dts -= 1LL<<st->pts_wrap_bits;
993 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
994 // we take the conservative approach and discard both
995 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
996 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
997 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
998 pkt->dts= AV_NOPTS_VALUE;
1001 if (pkt->duration == 0) {
1002 compute_frame_duration(&num, &den, st, pc, pkt);
1004 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1007 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1008 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1010 /* correct timestamps with byte offset if demuxers only have timestamps
1011 on packet boundaries */
1012 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1013 /* this will estimate bitrate based on this frame's duration and size */
1014 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1015 if(pkt->pts != AV_NOPTS_VALUE)
1017 if(pkt->dts != AV_NOPTS_VALUE)
1021 if (pc && pc->dts_sync_point >= 0) {
1022 // we have synchronization info from the parser
1023 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1025 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1026 if (pkt->dts != AV_NOPTS_VALUE) {
1027 // got DTS from the stream, update reference timestamp
1028 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1029 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1030 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1031 // compute DTS based on reference timestamp
1032 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1033 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1035 if (pc->dts_sync_point > 0)
1036 st->reference_dts = pkt->dts; // new reference
1040 /* This may be redundant, but it should not hurt. */
1041 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1042 presentation_delayed = 1;
1044 // 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);
1045 /* interpolate PTS and DTS if they are not present */
1046 //We skip H264 currently because delay and has_b_frames are not reliably set
1047 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1048 if (presentation_delayed) {
1049 /* DTS = decompression timestamp */
1050 /* PTS = presentation timestamp */
1051 if (pkt->dts == AV_NOPTS_VALUE)
1052 pkt->dts = st->last_IP_pts;
1053 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1054 if (pkt->dts == AV_NOPTS_VALUE)
1055 pkt->dts = st->cur_dts;
1057 /* this is tricky: the dts must be incremented by the duration
1058 of the frame we are displaying, i.e. the last I- or P-frame */
1059 if (st->last_IP_duration == 0)
1060 st->last_IP_duration = pkt->duration;
1061 if(pkt->dts != AV_NOPTS_VALUE)
1062 st->cur_dts = pkt->dts + st->last_IP_duration;
1063 st->last_IP_duration = pkt->duration;
1064 st->last_IP_pts= pkt->pts;
1065 /* cannot compute PTS if not present (we can compute it only
1066 by knowing the future */
1067 } else if (pkt->pts != AV_NOPTS_VALUE ||
1068 pkt->dts != AV_NOPTS_VALUE ||
1070 int duration = pkt->duration;
1072 if(pkt->pts != AV_NOPTS_VALUE && duration){
1073 int64_t old_diff= FFABS(st->cur_dts - duration - pkt->pts);
1074 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1075 if( old_diff < new_diff && old_diff < (duration>>3)
1076 && (!strcmp(s->iformat->name, "mpeg") ||
1077 !strcmp(s->iformat->name, "mpegts"))){
1078 pkt->pts += duration;
1079 av_log(s, AV_LOG_WARNING, "Adjusting PTS forward\n");
1080 // 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);
1084 /* presentation is not delayed : PTS and DTS are the same */
1085 if(pkt->pts == AV_NOPTS_VALUE)
1086 pkt->pts = pkt->dts;
1087 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1088 if(pkt->pts == AV_NOPTS_VALUE)
1089 pkt->pts = st->cur_dts;
1090 pkt->dts = pkt->pts;
1091 if(pkt->pts != AV_NOPTS_VALUE)
1092 st->cur_dts = pkt->pts + duration;
1096 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1097 st->pts_buffer[0]= pkt->pts;
1098 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1099 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1100 if(pkt->dts == AV_NOPTS_VALUE)
1101 pkt->dts= st->pts_buffer[0];
1102 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1103 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1105 if(pkt->dts > st->cur_dts)
1106 st->cur_dts = pkt->dts;
1109 // 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);
1112 if(is_intra_only(st->codec))
1113 pkt->flags |= AV_PKT_FLAG_KEY;
1115 pkt->convergence_duration = pc->convergence_duration;
1118 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1121 AVPacketList *pktl = *pkt_buf;
1122 *pkt_buf = pktl->next;
1123 av_free_packet(&pktl->pkt);
1126 *pkt_buf_end = NULL;
1130 * Parse a packet, add all split parts to parse_queue
1132 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1134 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1136 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1137 AVStream *st = s->streams[stream_index];
1138 uint8_t *data = pkt ? pkt->data : NULL;
1139 int size = pkt ? pkt->size : 0;
1140 int ret = 0, got_output = 0;
1143 av_init_packet(&flush_pkt);
1146 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1147 // preserve 0-size sync packets
1148 compute_pkt_fields(s, st, st->parser, pkt);
1151 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1154 av_init_packet(&out_pkt);
1155 len = av_parser_parse2(st->parser, st->codec,
1156 &out_pkt.data, &out_pkt.size, data, size,
1157 pkt->pts, pkt->dts, pkt->pos);
1159 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1160 /* increment read pointer */
1164 got_output = !!out_pkt.size;
1169 /* set the duration */
1170 out_pkt.duration = 0;
1171 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1172 if (st->codec->sample_rate > 0) {
1173 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1174 (AVRational){ 1, st->codec->sample_rate },
1178 } else if (st->codec->time_base.num != 0 &&
1179 st->codec->time_base.den != 0) {
1180 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1181 st->codec->time_base,
1186 out_pkt.stream_index = st->index;
1187 out_pkt.pts = st->parser->pts;
1188 out_pkt.dts = st->parser->dts;
1189 out_pkt.pos = st->parser->pos;
1191 if (st->parser->key_frame == 1 ||
1192 (st->parser->key_frame == -1 &&
1193 st->parser->pict_type == AV_PICTURE_TYPE_I))
1194 out_pkt.flags |= AV_PKT_FLAG_KEY;
1196 compute_pkt_fields(s, st, st->parser, &out_pkt);
1198 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1199 out_pkt.flags & AV_PKT_FLAG_KEY) {
1200 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? out_pkt.pos : st->parser->frame_offset;
1201 ff_reduce_index(s, st->index);
1202 av_add_index_entry(st, pos, out_pkt.dts,
1203 0, 0, AVINDEX_KEYFRAME);
1206 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1207 out_pkt.destruct = pkt->destruct;
1208 pkt->destruct = NULL;
1210 if ((ret = av_dup_packet(&out_pkt)) < 0)
1213 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1214 av_free_packet(&out_pkt);
1215 ret = AVERROR(ENOMEM);
1221 /* end of the stream => close and free the parser */
1222 if (pkt == &flush_pkt) {
1223 av_parser_close(st->parser);
1228 av_free_packet(pkt);
1232 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1233 AVPacketList **pkt_buffer_end,
1237 av_assert0(*pkt_buffer);
1240 *pkt_buffer = pktl->next;
1242 *pkt_buffer_end = NULL;
1247 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1249 int ret = 0, i, got_packet = 0;
1251 av_init_packet(pkt);
1253 while (!got_packet && !s->parse_queue) {
1257 /* read next packet */
1258 ret = ff_read_packet(s, &cur_pkt);
1260 if (ret == AVERROR(EAGAIN))
1262 /* flush the parsers */
1263 for(i = 0; i < s->nb_streams; i++) {
1265 if (st->parser && st->need_parsing)
1266 parse_packet(s, NULL, st->index);
1268 /* all remaining packets are now in parse_queue =>
1269 * really terminate parsing */
1273 st = s->streams[cur_pkt.stream_index];
1275 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1276 cur_pkt.dts != AV_NOPTS_VALUE &&
1277 cur_pkt.pts < cur_pkt.dts) {
1278 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1279 cur_pkt.stream_index,
1284 if (s->debug & FF_FDEBUG_TS)
1285 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1286 cur_pkt.stream_index,
1293 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1294 st->parser = av_parser_init(st->codec->codec_id);
1296 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1297 "%s, packets or times may be invalid.\n",
1298 avcodec_get_name(st->codec->codec_id));
1299 /* no parser available: just output the raw packets */
1300 st->need_parsing = AVSTREAM_PARSE_NONE;
1301 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1302 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1303 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1304 st->parser->flags |= PARSER_FLAG_ONCE;
1308 if (!st->need_parsing || !st->parser) {
1309 /* no parsing needed: we just output the packet as is */
1311 compute_pkt_fields(s, st, NULL, pkt);
1312 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1313 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1314 ff_reduce_index(s, st->index);
1315 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1318 } else if (st->discard < AVDISCARD_ALL) {
1319 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1323 av_free_packet(&cur_pkt);
1325 if (pkt->flags & AV_PKT_FLAG_KEY)
1326 st->skip_to_keyframe = 0;
1327 if (st->skip_to_keyframe) {
1328 av_free_packet(&cur_pkt);
1333 if (!got_packet && s->parse_queue)
1334 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1336 if(s->debug & FF_FDEBUG_TS)
1337 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1348 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1350 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1355 ret = s->packet_buffer ? read_from_packet_buffer(&s->packet_buffer,
1356 &s->packet_buffer_end,
1358 read_frame_internal(s, pkt);
1363 AVPacketList *pktl = s->packet_buffer;
1366 AVPacket *next_pkt = &pktl->pkt;
1368 if (next_pkt->dts != AV_NOPTS_VALUE) {
1369 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1370 // last dts seen for this stream. if any of packets following
1371 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1372 int64_t last_dts = next_pkt->dts;
1373 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1374 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1375 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1376 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1377 next_pkt->pts = pktl->pkt.dts;
1379 if (last_dts != AV_NOPTS_VALUE) {
1380 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1381 last_dts = pktl->pkt.dts;
1386 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1387 // Fixing the last reference frame had none pts issue (For MXF etc).
1388 // We only do this when
1390 // 2. we are not able to resolve a pts value for current packet.
1391 // 3. the packets for this stream at the end of the files had valid dts.
1392 next_pkt->pts = last_dts + next_pkt->duration;
1394 pktl = s->packet_buffer;
1397 /* read packet from packet buffer, if there is data */
1398 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1399 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1400 ret = read_from_packet_buffer(&s->packet_buffer,
1401 &s->packet_buffer_end, pkt);
1406 ret = read_frame_internal(s, pkt);
1408 if (pktl && ret != AVERROR(EAGAIN)) {
1415 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1416 &s->packet_buffer_end)) < 0)
1417 return AVERROR(ENOMEM);
1421 if (is_relative(pkt->dts))
1422 pkt->dts -= RELATIVE_TS_BASE;
1423 if (is_relative(pkt->pts))
1424 pkt->pts -= RELATIVE_TS_BASE;
1428 /* XXX: suppress the packet queue */
1429 static void flush_packet_queue(AVFormatContext *s)
1431 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1432 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1433 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1435 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1438 /*******************************************************/
1441 int av_find_default_stream_index(AVFormatContext *s)
1443 int first_audio_index = -1;
1447 if (s->nb_streams <= 0)
1449 for(i = 0; i < s->nb_streams; i++) {
1451 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1452 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1455 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1456 first_audio_index = i;
1458 return first_audio_index >= 0 ? first_audio_index : 0;
1462 * Flush the frame reader.
1464 void ff_read_frame_flush(AVFormatContext *s)
1469 flush_packet_queue(s);
1471 /* for each stream, reset read state */
1472 for(i = 0; i < s->nb_streams; i++) {
1476 av_parser_close(st->parser);
1479 st->last_IP_pts = AV_NOPTS_VALUE;
1480 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1481 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1482 st->reference_dts = AV_NOPTS_VALUE;
1484 st->probe_packets = MAX_PROBE_PACKETS;
1486 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1487 st->pts_buffer[j]= AV_NOPTS_VALUE;
1491 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1495 for(i = 0; i < s->nb_streams; i++) {
1496 AVStream *st = s->streams[i];
1498 st->cur_dts = av_rescale(timestamp,
1499 st->time_base.den * (int64_t)ref_st->time_base.num,
1500 st->time_base.num * (int64_t)ref_st->time_base.den);
1504 void ff_reduce_index(AVFormatContext *s, int stream_index)
1506 AVStream *st= s->streams[stream_index];
1507 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1509 if((unsigned)st->nb_index_entries >= max_entries){
1511 for(i=0; 2*i<st->nb_index_entries; i++)
1512 st->index_entries[i]= st->index_entries[2*i];
1513 st->nb_index_entries= i;
1517 int ff_add_index_entry(AVIndexEntry **index_entries,
1518 int *nb_index_entries,
1519 unsigned int *index_entries_allocated_size,
1520 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1522 AVIndexEntry *entries, *ie;
1525 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1528 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1529 timestamp -= RELATIVE_TS_BASE;
1531 entries = av_fast_realloc(*index_entries,
1532 index_entries_allocated_size,
1533 (*nb_index_entries + 1) *
1534 sizeof(AVIndexEntry));
1538 *index_entries= entries;
1540 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1543 index= (*nb_index_entries)++;
1544 ie= &entries[index];
1545 assert(index==0 || ie[-1].timestamp < timestamp);
1547 ie= &entries[index];
1548 if(ie->timestamp != timestamp){
1549 if(ie->timestamp <= timestamp)
1551 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1552 (*nb_index_entries)++;
1553 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1554 distance= ie->min_distance;
1558 ie->timestamp = timestamp;
1559 ie->min_distance= distance;
1566 int av_add_index_entry(AVStream *st,
1567 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1569 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1570 &st->index_entries_allocated_size, pos,
1571 timestamp, size, distance, flags);
1574 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1575 int64_t wanted_timestamp, int flags)
1583 //optimize appending index entries at the end
1584 if(b && entries[b-1].timestamp < wanted_timestamp)
1589 timestamp = entries[m].timestamp;
1590 if(timestamp >= wanted_timestamp)
1592 if(timestamp <= wanted_timestamp)
1595 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1597 if(!(flags & AVSEEK_FLAG_ANY)){
1598 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1599 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1608 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1611 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1612 wanted_timestamp, flags);
1615 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1617 AVInputFormat *avif= s->iformat;
1618 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1619 int64_t ts_min, ts_max, ts;
1624 if (stream_index < 0)
1627 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1630 ts_min= AV_NOPTS_VALUE;
1631 pos_limit= -1; //gcc falsely says it may be uninitialized
1633 st= s->streams[stream_index];
1634 if(st->index_entries){
1637 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()
1638 index= FFMAX(index, 0);
1639 e= &st->index_entries[index];
1641 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1643 ts_min= e->timestamp;
1644 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1650 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1651 assert(index < st->nb_index_entries);
1653 e= &st->index_entries[index];
1654 assert(e->timestamp >= target_ts);
1656 ts_max= e->timestamp;
1657 pos_limit= pos_max - e->min_distance;
1658 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1659 pos_max,pos_limit, ts_max);
1663 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1668 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1671 ff_read_frame_flush(s);
1672 ff_update_cur_dts(s, st, ts);
1677 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1678 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1679 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1680 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1683 int64_t start_pos, filesize;
1686 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1688 if(ts_min == AV_NOPTS_VALUE){
1689 pos_min = s->data_offset;
1690 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1691 if (ts_min == AV_NOPTS_VALUE)
1695 if(ts_min >= target_ts){
1700 if(ts_max == AV_NOPTS_VALUE){
1702 filesize = avio_size(s->pb);
1703 pos_max = filesize - 1;
1706 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1708 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1709 if (ts_max == AV_NOPTS_VALUE)
1713 int64_t tmp_pos= pos_max + 1;
1714 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1715 if(tmp_ts == AV_NOPTS_VALUE)
1719 if(tmp_pos >= filesize)
1725 if(ts_max <= target_ts){
1730 if(ts_min > ts_max){
1732 }else if(ts_min == ts_max){
1737 while (pos_min < pos_limit) {
1738 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1739 pos_min, pos_max, ts_min, ts_max);
1740 assert(pos_limit <= pos_max);
1743 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1744 // interpolate position (better than dichotomy)
1745 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1746 + pos_min - approximate_keyframe_distance;
1747 }else if(no_change==1){
1748 // bisection, if interpolation failed to change min or max pos last time
1749 pos = (pos_min + pos_limit)>>1;
1751 /* linear search if bisection failed, can only happen if there
1752 are very few or no keyframes between min/max */
1757 else if(pos > pos_limit)
1761 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1766 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1767 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1768 pos_limit, start_pos, no_change);
1769 if(ts == AV_NOPTS_VALUE){
1770 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1773 assert(ts != AV_NOPTS_VALUE);
1774 if (target_ts <= ts) {
1775 pos_limit = start_pos - 1;
1779 if (target_ts >= ts) {
1785 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1786 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1789 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1791 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1792 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1793 pos, ts_min, target_ts, ts_max);
1799 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1800 int64_t pos_min, pos_max;
1802 pos_min = s->data_offset;
1803 pos_max = avio_size(s->pb) - 1;
1805 if (pos < pos_min) pos= pos_min;
1806 else if(pos > pos_max) pos= pos_max;
1808 avio_seek(s->pb, pos, SEEK_SET);
1813 static int seek_frame_generic(AVFormatContext *s,
1814 int stream_index, int64_t timestamp, int flags)
1821 st = s->streams[stream_index];
1823 index = av_index_search_timestamp(st, timestamp, flags);
1825 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1828 if(index < 0 || index==st->nb_index_entries-1){
1832 if(st->nb_index_entries){
1833 assert(st->index_entries);
1834 ie= &st->index_entries[st->nb_index_entries-1];
1835 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1837 ff_update_cur_dts(s, st, ie->timestamp);
1839 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1845 read_status = av_read_frame(s, &pkt);
1846 } while (read_status == AVERROR(EAGAIN));
1847 if (read_status < 0)
1849 av_free_packet(&pkt);
1850 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1851 if(pkt.flags & AV_PKT_FLAG_KEY)
1853 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1854 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);
1859 index = av_index_search_timestamp(st, timestamp, flags);
1864 ff_read_frame_flush(s);
1865 AV_NOWARN_DEPRECATED(
1866 if (s->iformat->read_seek){
1867 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1871 ie = &st->index_entries[index];
1872 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1874 ff_update_cur_dts(s, st, ie->timestamp);
1879 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1880 int64_t timestamp, int flags)
1885 if (flags & AVSEEK_FLAG_BYTE) {
1886 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1888 ff_read_frame_flush(s);
1889 return seek_frame_byte(s, stream_index, timestamp, flags);
1892 if(stream_index < 0){
1893 stream_index= av_find_default_stream_index(s);
1894 if(stream_index < 0)
1897 st= s->streams[stream_index];
1898 /* timestamp for default must be expressed in AV_TIME_BASE units */
1899 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1902 /* first, we try the format specific seek */
1903 AV_NOWARN_DEPRECATED(
1904 if (s->iformat->read_seek) {
1905 ff_read_frame_flush(s);
1906 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1914 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1915 ff_read_frame_flush(s);
1916 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1917 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1918 ff_read_frame_flush(s);
1919 return seek_frame_generic(s, stream_index, timestamp, flags);
1925 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1927 int ret = seek_frame_internal(s, stream_index, timestamp, flags);
1930 queue_attached_pictures(s);
1935 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1937 if(min_ts > ts || max_ts < ts)
1940 if (s->iformat->read_seek2) {
1942 ff_read_frame_flush(s);
1943 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1946 queue_attached_pictures(s);
1950 if(s->iformat->read_timestamp){
1951 //try to seek via read_timestamp()
1954 //Fallback to old API if new is not implemented but old is
1955 //Note the old has somewat different sematics
1956 AV_NOWARN_DEPRECATED(
1957 if (s->iformat->read_seek || 1) {
1958 int dir = (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0);
1959 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
1960 if (ret<0 && ts != min_ts && max_ts != ts) {
1961 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
1963 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
1969 // try some generic seek like seek_frame_generic() but with new ts semantics
1972 /*******************************************************/
1975 * Return TRUE if the stream has accurate duration in any stream.
1977 * @return TRUE if the stream has accurate duration for at least one component.
1979 static int has_duration(AVFormatContext *ic)
1984 for(i = 0;i < ic->nb_streams; i++) {
1985 st = ic->streams[i];
1986 if (st->duration != AV_NOPTS_VALUE)
1989 if (ic->duration != AV_NOPTS_VALUE)
1995 * Estimate the stream timings from the one of each components.
1997 * Also computes the global bitrate if possible.
1999 static void update_stream_timings(AVFormatContext *ic)
2001 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2002 int64_t duration, duration1, filesize;
2006 start_time = INT64_MAX;
2007 start_time_text = INT64_MAX;
2008 end_time = INT64_MIN;
2009 duration = INT64_MIN;
2010 for(i = 0;i < ic->nb_streams; i++) {
2011 st = ic->streams[i];
2012 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2013 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2014 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2015 if (start_time1 < start_time_text)
2016 start_time_text = start_time1;
2018 start_time = FFMIN(start_time, start_time1);
2019 if (st->duration != AV_NOPTS_VALUE) {
2020 end_time1 = start_time1
2021 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2022 end_time = FFMAX(end_time, end_time1);
2025 if (st->duration != AV_NOPTS_VALUE) {
2026 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2027 duration = FFMAX(duration, duration1);
2030 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2031 start_time = start_time_text;
2032 if (start_time != INT64_MAX) {
2033 ic->start_time = start_time;
2034 if (end_time != INT64_MIN)
2035 duration = FFMAX(duration, end_time - start_time);
2037 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2038 ic->duration = duration;
2040 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2041 /* compute the bitrate */
2042 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2043 (double)ic->duration;
2047 static void fill_all_stream_timings(AVFormatContext *ic)
2052 update_stream_timings(ic);
2053 for(i = 0;i < ic->nb_streams; i++) {
2054 st = ic->streams[i];
2055 if (st->start_time == AV_NOPTS_VALUE) {
2056 if(ic->start_time != AV_NOPTS_VALUE)
2057 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2058 if(ic->duration != AV_NOPTS_VALUE)
2059 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2064 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2066 int64_t filesize, duration;
2070 /* if bit_rate is already set, we believe it */
2071 if (ic->bit_rate <= 0) {
2073 for(i=0;i<ic->nb_streams;i++) {
2074 st = ic->streams[i];
2075 if (st->codec->bit_rate > 0)
2076 bit_rate += st->codec->bit_rate;
2078 ic->bit_rate = bit_rate;
2081 /* if duration is already set, we believe it */
2082 if (ic->duration == AV_NOPTS_VALUE &&
2083 ic->bit_rate != 0) {
2084 filesize = ic->pb ? avio_size(ic->pb) : 0;
2086 for(i = 0; i < ic->nb_streams; i++) {
2087 st = ic->streams[i];
2088 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2089 if (st->duration == AV_NOPTS_VALUE)
2090 st->duration = duration;
2096 #define DURATION_MAX_READ_SIZE 250000
2097 #define DURATION_MAX_RETRY 3
2099 /* only usable for MPEG-PS streams */
2100 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2102 AVPacket pkt1, *pkt = &pkt1;
2104 int read_size, i, ret;
2106 int64_t filesize, offset, duration;
2109 /* flush packet queue */
2110 flush_packet_queue(ic);
2112 for (i=0; i<ic->nb_streams; i++) {
2113 st = ic->streams[i];
2114 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2115 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2118 av_parser_close(st->parser);
2123 /* estimate the end time (duration) */
2124 /* XXX: may need to support wrapping */
2125 filesize = ic->pb ? avio_size(ic->pb) : 0;
2126 end_time = AV_NOPTS_VALUE;
2128 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2132 avio_seek(ic->pb, offset, SEEK_SET);
2135 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2139 ret = ff_read_packet(ic, pkt);
2140 } while(ret == AVERROR(EAGAIN));
2143 read_size += pkt->size;
2144 st = ic->streams[pkt->stream_index];
2145 if (pkt->pts != AV_NOPTS_VALUE &&
2146 (st->start_time != AV_NOPTS_VALUE ||
2147 st->first_dts != AV_NOPTS_VALUE)) {
2148 duration = end_time = pkt->pts;
2149 if (st->start_time != AV_NOPTS_VALUE)
2150 duration -= st->start_time;
2152 duration -= st->first_dts;
2154 duration += 1LL<<st->pts_wrap_bits;
2156 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2157 st->duration = duration;
2160 av_free_packet(pkt);
2162 }while( end_time==AV_NOPTS_VALUE
2163 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2164 && ++retry <= DURATION_MAX_RETRY);
2166 fill_all_stream_timings(ic);
2168 avio_seek(ic->pb, old_offset, SEEK_SET);
2169 for (i=0; i<ic->nb_streams; i++) {
2171 st->cur_dts= st->first_dts;
2172 st->last_IP_pts = AV_NOPTS_VALUE;
2173 st->reference_dts = AV_NOPTS_VALUE;
2177 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2181 /* get the file size, if possible */
2182 if (ic->iformat->flags & AVFMT_NOFILE) {
2185 file_size = avio_size(ic->pb);
2186 file_size = FFMAX(0, file_size);
2189 if ((!strcmp(ic->iformat->name, "mpeg") ||
2190 !strcmp(ic->iformat->name, "mpegts")) &&
2191 file_size && ic->pb->seekable) {
2192 /* get accurate estimate from the PTSes */
2193 estimate_timings_from_pts(ic, old_offset);
2194 } else if (has_duration(ic)) {
2195 /* at least one component has timings - we use them for all
2197 fill_all_stream_timings(ic);
2199 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2200 /* less precise: use bitrate info */
2201 estimate_timings_from_bit_rate(ic);
2203 update_stream_timings(ic);
2207 AVStream av_unused *st;
2208 for(i = 0;i < ic->nb_streams; i++) {
2209 st = ic->streams[i];
2210 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2211 (double) st->start_time / AV_TIME_BASE,
2212 (double) st->duration / AV_TIME_BASE);
2214 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2215 (double) ic->start_time / AV_TIME_BASE,
2216 (double) ic->duration / AV_TIME_BASE,
2217 ic->bit_rate / 1000);
2221 static int has_codec_parameters(AVStream *st)
2223 AVCodecContext *avctx = st->codec;
2225 switch (avctx->codec_type) {
2226 case AVMEDIA_TYPE_AUDIO:
2227 val = avctx->sample_rate && avctx->channels;
2228 if (!avctx->frame_size && determinable_frame_size(avctx))
2230 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2233 case AVMEDIA_TYPE_VIDEO:
2235 if (st->info->found_decoder >= 0 && avctx->pix_fmt == PIX_FMT_NONE)
2238 case AVMEDIA_TYPE_DATA:
2239 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2244 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2247 static int has_decode_delay_been_guessed(AVStream *st)
2249 return st->codec->codec_id != CODEC_ID_H264 ||
2250 st->info->nb_decoded_frames >= 6;
2253 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2254 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2257 int got_picture = 1, ret = 0;
2259 AVPacket pkt = *avpkt;
2261 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2262 AVDictionary *thread_opt = NULL;
2264 codec = st->codec->codec ? st->codec->codec :
2265 avcodec_find_decoder(st->codec->codec_id);
2268 st->info->found_decoder = -1;
2272 /* force thread count to 1 since the h264 decoder will not extract SPS
2273 * and PPS to extradata during multi-threaded decoding */
2274 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2275 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2277 av_dict_free(&thread_opt);
2279 st->info->found_decoder = -1;
2282 st->info->found_decoder = 1;
2283 } else if (!st->info->found_decoder)
2284 st->info->found_decoder = 1;
2286 if (st->info->found_decoder < 0)
2289 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2291 (!has_codec_parameters(st) ||
2292 !has_decode_delay_been_guessed(st) ||
2293 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2295 avcodec_get_frame_defaults(&picture);
2296 switch(st->codec->codec_type) {
2297 case AVMEDIA_TYPE_VIDEO:
2298 ret = avcodec_decode_video2(st->codec, &picture,
2299 &got_picture, &pkt);
2301 case AVMEDIA_TYPE_AUDIO:
2302 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2309 st->info->nb_decoded_frames++;
2315 if(!pkt.data && !got_picture)
2320 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2322 while (tags->id != CODEC_ID_NONE) {
2330 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2333 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2334 if(tag == tags[i].tag)
2337 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2338 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2341 return CODEC_ID_NONE;
2344 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2347 for(i=0; tags && tags[i]; i++){
2348 int tag= ff_codec_get_tag(tags[i], id);
2354 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2357 for(i=0; tags && tags[i]; i++){
2358 enum CodecID id= ff_codec_get_id(tags[i], tag);
2359 if(id!=CODEC_ID_NONE) return id;
2361 return CODEC_ID_NONE;
2364 static void compute_chapters_end(AVFormatContext *s)
2367 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2369 for (i = 0; i < s->nb_chapters; i++)
2370 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2371 AVChapter *ch = s->chapters[i];
2372 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2375 for (j = 0; j < s->nb_chapters; j++) {
2376 AVChapter *ch1 = s->chapters[j];
2377 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2378 if (j != i && next_start > ch->start && next_start < end)
2381 ch->end = (end == INT64_MAX) ? ch->start : end;
2385 static int get_std_framerate(int i){
2386 if(i<60*12) return i*1001;
2387 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2391 * Is the time base unreliable.
2392 * This is a heuristic to balance between quick acceptance of the values in
2393 * the headers vs. some extra checks.
2394 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2395 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2396 * And there are "variable" fps files this needs to detect as well.
2398 static int tb_unreliable(AVCodecContext *c){
2399 if( c->time_base.den >= 101L*c->time_base.num
2400 || c->time_base.den < 5L*c->time_base.num
2401 /* || c->codec_tag == AV_RL32("DIVX")
2402 || c->codec_tag == AV_RL32("XVID")*/
2403 || c->codec_id == CODEC_ID_MPEG2VIDEO
2404 || c->codec_id == CODEC_ID_H264
2410 #if FF_API_FORMAT_PARAMETERS
2411 int av_find_stream_info(AVFormatContext *ic)
2413 return avformat_find_stream_info(ic, NULL);
2417 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2419 int i, count, ret, read_size, j;
2421 AVPacket pkt1, *pkt;
2422 int64_t old_offset = avio_tell(ic->pb);
2423 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2424 int flush_codecs = 1;
2427 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2429 for(i=0;i<ic->nb_streams;i++) {
2431 AVDictionary *thread_opt = NULL;
2432 st = ic->streams[i];
2434 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2435 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2436 /* if(!st->time_base.num)
2438 if(!st->codec->time_base.num)
2439 st->codec->time_base= st->time_base;
2441 //only for the split stuff
2442 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2443 st->parser = av_parser_init(st->codec->codec_id);
2444 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2445 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2448 codec = st->codec->codec ? st->codec->codec :
2449 avcodec_find_decoder(st->codec->codec_id);
2451 /* force thread count to 1 since the h264 decoder will not extract SPS
2452 * and PPS to extradata during multi-threaded decoding */
2453 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2455 /* Ensure that subtitle_header is properly set. */
2456 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2457 && codec && !st->codec->codec)
2458 avcodec_open2(st->codec, codec, options ? &options[i]
2461 //try to just open decoders, in case this is enough to get parameters
2462 if (!has_codec_parameters(st)) {
2463 if (codec && !st->codec->codec)
2464 avcodec_open2(st->codec, codec, options ? &options[i]
2468 av_dict_free(&thread_opt);
2471 for (i=0; i<ic->nb_streams; i++) {
2472 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2478 if (ff_check_interrupt(&ic->interrupt_callback)){
2480 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2484 /* check if one codec still needs to be handled */
2485 for(i=0;i<ic->nb_streams;i++) {
2486 int fps_analyze_framecount = 20;
2488 st = ic->streams[i];
2489 if (!has_codec_parameters(st))
2491 /* if the timebase is coarse (like the usual millisecond precision
2492 of mkv), we need to analyze more frames to reliably arrive at
2494 if (av_q2d(st->time_base) > 0.0005)
2495 fps_analyze_framecount *= 2;
2496 if (ic->fps_probe_size >= 0)
2497 fps_analyze_framecount = ic->fps_probe_size;
2498 /* variable fps and no guess at the real fps */
2499 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2500 && st->info->duration_count < fps_analyze_framecount
2501 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2503 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2505 if (st->first_dts == AV_NOPTS_VALUE &&
2506 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2507 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2510 if (i == ic->nb_streams) {
2511 /* NOTE: if the format has no header, then we need to read
2512 some packets to get most of the streams, so we cannot
2514 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2515 /* if we found the info for all the codecs, we can stop */
2517 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2522 /* we did not get all the codec info, but we read too much data */
2523 if (read_size >= ic->probesize) {
2525 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2526 for (i = 0; i < ic->nb_streams; i++)
2527 if (!ic->streams[i]->r_frame_rate.num &&
2528 ic->streams[i]->info->duration_count <= 1)
2529 av_log(ic, AV_LOG_WARNING,
2530 "Stream #%d: not enough frames to estimate rate; "
2531 "consider increasing probesize\n", i);
2535 /* NOTE: a new stream can be added there if no header in file
2536 (AVFMTCTX_NOHEADER) */
2537 ret = read_frame_internal(ic, &pkt1);
2538 if (ret == AVERROR(EAGAIN))
2546 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2547 if ((ret = av_dup_packet(pkt)) < 0)
2548 goto find_stream_info_err;
2550 read_size += pkt->size;
2552 st = ic->streams[pkt->stream_index];
2553 if (st->codec_info_nb_frames>1) {
2555 if (st->time_base.den > 0)
2556 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2557 if (st->avg_frame_rate.num > 0)
2558 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));
2560 if (t >= ic->max_analyze_duration) {
2561 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2564 st->info->codec_info_duration += pkt->duration;
2567 int64_t last = st->info->last_dts;
2569 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2570 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2571 int64_t duration= pkt->dts - last;
2573 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2574 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2575 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2576 int framerate= get_std_framerate(i);
2577 double sdts= dts*framerate/(1001*12);
2579 int ticks= lrintf(sdts+j*0.5);
2580 double error= sdts - ticks + j*0.5;
2581 st->info->duration_error[j][0][i] += error;
2582 st->info->duration_error[j][1][i] += error*error;
2585 st->info->duration_count++;
2586 // ignore the first 4 values, they might have some random jitter
2587 if (st->info->duration_count > 3)
2588 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2590 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2591 st->info->last_dts = pkt->dts;
2593 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2594 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2595 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2596 st->codec->extradata_size= i;
2597 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2598 if (!st->codec->extradata)
2599 return AVERROR(ENOMEM);
2600 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2601 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2605 /* if still no information, we try to open the codec and to
2606 decompress the frame. We try to avoid that in most cases as
2607 it takes longer and uses more memory. For MPEG-4, we need to
2608 decompress for QuickTime.
2610 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2611 least one frame of codec data, this makes sure the codec initializes
2612 the channel configuration and does not only trust the values from the container.
2614 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2616 st->codec_info_nb_frames++;
2621 AVPacket empty_pkt = { 0 };
2623 av_init_packet(&empty_pkt);
2625 ret = -1; /* we could not have all the codec parameters before EOF */
2626 for(i=0;i<ic->nb_streams;i++) {
2627 st = ic->streams[i];
2629 /* flush the decoders */
2630 if (st->info->found_decoder == 1) {
2632 err = try_decode_frame(st, &empty_pkt,
2633 (options && i < orig_nb_streams) ?
2634 &options[i] : NULL);
2635 } while (err > 0 && !has_codec_parameters(st));
2638 av_log(ic, AV_LOG_INFO,
2639 "decoding for stream %d failed\n", st->index);
2643 if (!has_codec_parameters(st)){
2645 avcodec_string(buf, sizeof(buf), st->codec, 0);
2646 av_log(ic, AV_LOG_WARNING,
2647 "Could not find codec parameters (%s)\n", buf);
2654 // close codecs which were opened in try_decode_frame()
2655 for(i=0;i<ic->nb_streams;i++) {
2656 st = ic->streams[i];
2657 avcodec_close(st->codec);
2659 for(i=0;i<ic->nb_streams;i++) {
2660 st = ic->streams[i];
2661 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2662 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2663 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2664 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2665 st->codec->codec_tag= tag;
2668 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2669 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2670 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2671 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2672 // the check for tb_unreliable() is not completely correct, since this is not about handling
2673 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2674 // ipmovie.c produces.
2675 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)
2676 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);
2677 if (st->info->duration_count && !st->r_frame_rate.num
2678 && tb_unreliable(st->codec) /*&&
2679 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2680 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2682 double best_error= 0.01;
2684 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2687 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2689 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2692 int n= st->info->duration_count;
2693 double a= st->info->duration_error[k][0][j] / n;
2694 double error= st->info->duration_error[k][1][j]/n - a*a;
2696 if(error < best_error && best_error> 0.000000001){
2698 num = get_std_framerate(j);
2701 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2704 // do not increase frame rate by more than 1 % in order to match a standard rate.
2705 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2706 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2709 if (!st->r_frame_rate.num){
2710 if( st->codec->time_base.den * (int64_t)st->time_base.num
2711 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2712 st->r_frame_rate.num = st->codec->time_base.den;
2713 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2715 st->r_frame_rate.num = st->time_base.den;
2716 st->r_frame_rate.den = st->time_base.num;
2719 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2720 if(!st->codec->bits_per_coded_sample)
2721 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2722 // set stream disposition based on audio service type
2723 switch (st->codec->audio_service_type) {
2724 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2725 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2726 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2727 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2728 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2729 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2730 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2731 st->disposition = AV_DISPOSITION_COMMENT; break;
2732 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2733 st->disposition = AV_DISPOSITION_KARAOKE; break;
2738 estimate_timings(ic, old_offset);
2740 compute_chapters_end(ic);
2742 find_stream_info_err:
2743 for (i=0; i < ic->nb_streams; i++) {
2744 if (ic->streams[i]->codec)
2745 ic->streams[i]->codec->thread_count = 0;
2746 av_freep(&ic->streams[i]->info);
2749 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2753 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2757 for (i = 0; i < ic->nb_programs; i++) {
2758 if (ic->programs[i] == last) {
2762 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2763 if (ic->programs[i]->stream_index[j] == s)
2764 return ic->programs[i];
2770 int av_find_best_stream(AVFormatContext *ic,
2771 enum AVMediaType type,
2772 int wanted_stream_nb,
2774 AVCodec **decoder_ret,
2777 int i, nb_streams = ic->nb_streams;
2778 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2779 unsigned *program = NULL;
2780 AVCodec *decoder = NULL, *best_decoder = NULL;
2782 if (related_stream >= 0 && wanted_stream_nb < 0) {
2783 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2785 program = p->stream_index;
2786 nb_streams = p->nb_stream_indexes;
2789 for (i = 0; i < nb_streams; i++) {
2790 int real_stream_index = program ? program[i] : i;
2791 AVStream *st = ic->streams[real_stream_index];
2792 AVCodecContext *avctx = st->codec;
2793 if (avctx->codec_type != type)
2795 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2797 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2800 decoder = avcodec_find_decoder(st->codec->codec_id);
2803 ret = AVERROR_DECODER_NOT_FOUND;
2807 if (best_count >= st->codec_info_nb_frames)
2809 best_count = st->codec_info_nb_frames;
2810 ret = real_stream_index;
2811 best_decoder = decoder;
2812 if (program && i == nb_streams - 1 && ret < 0) {
2814 nb_streams = ic->nb_streams;
2815 i = 0; /* no related stream found, try again with everything */
2819 *decoder_ret = best_decoder;
2823 /*******************************************************/
2825 int av_read_play(AVFormatContext *s)
2827 if (s->iformat->read_play)
2828 return s->iformat->read_play(s);
2830 return avio_pause(s->pb, 0);
2831 return AVERROR(ENOSYS);
2834 int av_read_pause(AVFormatContext *s)
2836 if (s->iformat->read_pause)
2837 return s->iformat->read_pause(s);
2839 return avio_pause(s->pb, 1);
2840 return AVERROR(ENOSYS);
2843 void avformat_free_context(AVFormatContext *s)
2849 if (s->iformat && s->iformat->priv_class && s->priv_data)
2850 av_opt_free(s->priv_data);
2852 for(i=0;i<s->nb_streams;i++) {
2853 /* free all data in a stream component */
2856 av_parser_close(st->parser);
2858 if (st->attached_pic.data)
2859 av_free_packet(&st->attached_pic);
2860 av_dict_free(&st->metadata);
2861 av_freep(&st->index_entries);
2862 av_freep(&st->codec->extradata);
2863 av_freep(&st->codec->subtitle_header);
2864 av_freep(&st->codec);
2865 av_freep(&st->priv_data);
2866 av_freep(&st->info);
2869 for(i=s->nb_programs-1; i>=0; i--) {
2870 av_dict_free(&s->programs[i]->metadata);
2871 av_freep(&s->programs[i]->stream_index);
2872 av_freep(&s->programs[i]);
2874 av_freep(&s->programs);
2875 av_freep(&s->priv_data);
2876 while(s->nb_chapters--) {
2877 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2878 av_freep(&s->chapters[s->nb_chapters]);
2880 av_freep(&s->chapters);
2881 av_dict_free(&s->metadata);
2882 av_freep(&s->streams);
2886 #if FF_API_CLOSE_INPUT_FILE
2887 void av_close_input_file(AVFormatContext *s)
2889 avformat_close_input(&s);
2893 void avformat_close_input(AVFormatContext **ps)
2895 AVFormatContext *s = *ps;
2896 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2898 flush_packet_queue(s);
2899 if (s->iformat && (s->iformat->read_close))
2900 s->iformat->read_close(s);
2901 avformat_free_context(s);
2907 #if FF_API_NEW_STREAM
2908 AVStream *av_new_stream(AVFormatContext *s, int id)
2910 AVStream *st = avformat_new_stream(s, NULL);
2917 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2923 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2925 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2928 s->streams = streams;
2930 st = av_mallocz(sizeof(AVStream));
2933 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2937 st->info->last_dts = AV_NOPTS_VALUE;
2939 st->codec = avcodec_alloc_context3(c);
2941 /* no default bitrate if decoding */
2942 st->codec->bit_rate = 0;
2944 st->index = s->nb_streams;
2945 st->start_time = AV_NOPTS_VALUE;
2946 st->duration = AV_NOPTS_VALUE;
2947 /* we set the current DTS to 0 so that formats without any timestamps
2948 but durations get some timestamps, formats with some unknown
2949 timestamps have their first few packets buffered and the
2950 timestamps corrected before they are returned to the user */
2951 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
2952 st->first_dts = AV_NOPTS_VALUE;
2953 st->probe_packets = MAX_PROBE_PACKETS;
2955 /* default pts setting is MPEG-like */
2956 avpriv_set_pts_info(st, 33, 1, 90000);
2957 st->last_IP_pts = AV_NOPTS_VALUE;
2958 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2959 st->pts_buffer[i]= AV_NOPTS_VALUE;
2960 st->reference_dts = AV_NOPTS_VALUE;
2962 st->sample_aspect_ratio = (AVRational){0,1};
2964 s->streams[s->nb_streams++] = st;
2968 AVProgram *av_new_program(AVFormatContext *ac, int id)
2970 AVProgram *program=NULL;
2973 av_dlog(ac, "new_program: id=0x%04x\n", id);
2975 for(i=0; i<ac->nb_programs; i++)
2976 if(ac->programs[i]->id == id)
2977 program = ac->programs[i];
2980 program = av_mallocz(sizeof(AVProgram));
2983 dynarray_add(&ac->programs, &ac->nb_programs, program);
2984 program->discard = AVDISCARD_NONE;
2991 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2993 AVChapter *chapter = NULL;
2996 for(i=0; i<s->nb_chapters; i++)
2997 if(s->chapters[i]->id == id)
2998 chapter = s->chapters[i];
3001 chapter= av_mallocz(sizeof(AVChapter));
3004 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3006 av_dict_set(&chapter->metadata, "title", title, 0);
3008 chapter->time_base= time_base;
3009 chapter->start = start;
3015 /************************************************************/
3016 /* output media file */
3018 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3019 const char *format, const char *filename)
3021 AVFormatContext *s = avformat_alloc_context();
3030 oformat = av_guess_format(format, NULL, NULL);
3032 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3033 ret = AVERROR(EINVAL);
3037 oformat = av_guess_format(NULL, filename, NULL);
3039 ret = AVERROR(EINVAL);
3040 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3047 s->oformat = oformat;
3048 if (s->oformat->priv_data_size > 0) {
3049 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3052 if (s->oformat->priv_class) {
3053 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3054 av_opt_set_defaults(s->priv_data);
3057 s->priv_data = NULL;
3060 av_strlcpy(s->filename, filename, sizeof(s->filename));
3064 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3065 ret = AVERROR(ENOMEM);
3067 avformat_free_context(s);
3071 #if FF_API_ALLOC_OUTPUT_CONTEXT
3072 AVFormatContext *avformat_alloc_output_context(const char *format,
3073 AVOutputFormat *oformat, const char *filename)
3075 AVFormatContext *avctx;
3076 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3077 return ret < 0 ? NULL : avctx;
3081 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3083 const AVCodecTag *avctag;
3085 enum CodecID id = CODEC_ID_NONE;
3086 unsigned int tag = 0;
3089 * Check that tag + id is in the table
3090 * If neither is in the table -> OK
3091 * If tag is in the table with another id -> FAIL
3092 * If id is in the table with another tag -> FAIL unless strict < normal
3094 for (n = 0; s->oformat->codec_tag[n]; n++) {
3095 avctag = s->oformat->codec_tag[n];
3096 while (avctag->id != CODEC_ID_NONE) {
3097 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3099 if (id == st->codec->codec_id)
3102 if (avctag->id == st->codec->codec_id)
3107 if (id != CODEC_ID_NONE)
3109 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3114 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3118 AVDictionary *tmp = NULL;
3121 av_dict_copy(&tmp, *options, 0);
3122 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3124 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3125 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3128 // some sanity checks
3129 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3130 av_log(s, AV_LOG_ERROR, "no streams\n");
3131 ret = AVERROR(EINVAL);
3135 for(i=0;i<s->nb_streams;i++) {
3138 switch (st->codec->codec_type) {
3139 case AVMEDIA_TYPE_AUDIO:
3140 if(st->codec->sample_rate<=0){
3141 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3142 ret = AVERROR(EINVAL);
3145 if(!st->codec->block_align)
3146 st->codec->block_align = st->codec->channels *
3147 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3149 case AVMEDIA_TYPE_VIDEO:
3150 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3151 av_log(s, AV_LOG_ERROR, "time base not set\n");
3152 ret = AVERROR(EINVAL);
3155 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3156 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3157 ret = AVERROR(EINVAL);
3160 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3161 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3163 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between muxer "
3164 "(%d/%d) and encoder layer (%d/%d)\n",
3165 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3166 st->codec->sample_aspect_ratio.num,
3167 st->codec->sample_aspect_ratio.den);
3168 ret = AVERROR(EINVAL);
3174 if(s->oformat->codec_tag){
3175 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)){
3176 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3177 st->codec->codec_tag= 0;
3179 if(st->codec->codec_tag){
3180 if (!validate_codec_tag(s, st)) {
3182 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3183 av_log(s, AV_LOG_ERROR,
3184 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3185 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3186 ret = AVERROR_INVALIDDATA;
3190 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3193 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3194 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3195 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3198 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3199 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3200 if (!s->priv_data) {
3201 ret = AVERROR(ENOMEM);
3204 if (s->oformat->priv_class) {
3205 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3206 av_opt_set_defaults(s->priv_data);
3207 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3212 /* set muxer identification string */
3213 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3214 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3217 if(s->oformat->write_header){
3218 ret = s->oformat->write_header(s);
3223 /* init PTS generation */
3224 for(i=0;i<s->nb_streams;i++) {
3225 int64_t den = AV_NOPTS_VALUE;
3228 switch (st->codec->codec_type) {
3229 case AVMEDIA_TYPE_AUDIO:
3230 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3232 case AVMEDIA_TYPE_VIDEO:
3233 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3238 if (den != AV_NOPTS_VALUE) {
3240 ret = AVERROR_INVALIDDATA;
3243 frac_init(&st->pts, 0, 0, den);
3248 av_dict_free(options);
3257 //FIXME merge with compute_pkt_fields
3258 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3259 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3260 int num, den, frame_size, i;
3262 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3263 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3265 /* duration field */
3266 if (pkt->duration == 0) {
3267 compute_frame_duration(&num, &den, st, NULL, pkt);
3269 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3273 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3276 //XXX/FIXME this is a temporary hack until all encoders output pts
3277 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3280 av_log(s, AV_LOG_WARNING, "Encoder did not produce proper pts, making some up.\n");
3284 // pkt->pts= st->cur_dts;
3285 pkt->pts= st->pts.val;
3288 //calculate dts from pts
3289 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3290 st->pts_buffer[0]= pkt->pts;
3291 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3292 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3293 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3294 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3296 pkt->dts= st->pts_buffer[0];
3299 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)){
3300 av_log(s, AV_LOG_ERROR,
3301 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3302 st->index, st->cur_dts, pkt->dts);
3303 return AVERROR(EINVAL);
3305 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3306 av_log(s, AV_LOG_ERROR, "pts (%"PRId64") < dts (%"PRId64") in stream %d\n", pkt->pts, pkt->dts, st->index);
3307 return AVERROR(EINVAL);
3310 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3311 st->cur_dts= pkt->dts;
3312 st->pts.val= pkt->dts;
3315 switch (st->codec->codec_type) {
3316 case AVMEDIA_TYPE_AUDIO:
3317 frame_size = get_audio_frame_size(st->codec, pkt->size, 1);
3319 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3320 likely equal to the encoder delay, but it would be better if we
3321 had the real timestamps from the encoder */
3322 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3323 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3326 case AVMEDIA_TYPE_VIDEO:
3327 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3335 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3340 if (s->oformat->flags & AVFMT_ALLOW_FLUSH)
3341 return s->oformat->write_packet(s, pkt);
3345 ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3347 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3350 ret= s->oformat->write_packet(s, pkt);
3353 s->streams[pkt->stream_index]->nb_frames++;
3357 #define CHUNK_START 0x1000
3359 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3360 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3362 AVPacketList **next_point, *this_pktl;
3363 AVStream *st= s->streams[pkt->stream_index];
3364 int chunked= s->max_chunk_size || s->max_chunk_duration;
3366 this_pktl = av_mallocz(sizeof(AVPacketList));
3368 return AVERROR(ENOMEM);
3369 this_pktl->pkt= *pkt;
3370 pkt->destruct= NULL; // do not free original but only the copy
3371 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3373 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3374 next_point = &(st->last_in_packet_buffer->next);
3376 next_point = &s->packet_buffer;
3381 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3382 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3383 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3384 st->interleaver_chunk_size += pkt->size;
3385 st->interleaver_chunk_duration += pkt->duration;
3388 st->interleaver_chunk_size =
3389 st->interleaver_chunk_duration = 0;
3390 this_pktl->pkt.flags |= CHUNK_START;
3394 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3396 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3397 || !compare(s, &(*next_point)->pkt, pkt))){
3398 next_point= &(*next_point)->next;
3403 next_point = &(s->packet_buffer_end->next);
3406 assert(!*next_point);
3408 s->packet_buffer_end= this_pktl;
3411 this_pktl->next= *next_point;
3413 s->streams[pkt->stream_index]->last_in_packet_buffer=
3414 *next_point= this_pktl;
3418 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3420 AVStream *st = s->streams[ pkt ->stream_index];
3421 AVStream *st2= s->streams[ next->stream_index];
3422 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3424 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3425 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);
3426 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);
3428 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
3429 -( 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;
3432 comp= (ts>ts2) - (ts<ts2);
3436 return pkt->stream_index < next->stream_index;
3440 int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3441 AVPacket *pkt, int flush)
3444 int stream_count=0, noninterleaved_count=0;
3445 int64_t delta_dts_max = 0;
3449 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3454 for(i=0; i < s->nb_streams; i++) {
3455 if (s->streams[i]->last_in_packet_buffer) {
3457 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3458 ++noninterleaved_count;
3462 if (s->nb_streams == stream_count) {
3465 for(i=0; i < s->nb_streams; i++) {
3466 if (s->streams[i]->last_in_packet_buffer) {
3468 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3469 s->streams[i]->time_base,
3471 av_rescale_q(s->packet_buffer->pkt.dts,
3472 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3474 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3477 if(s->nb_streams == stream_count+noninterleaved_count &&
3478 delta_dts_max > 20*AV_TIME_BASE) {
3479 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3483 if(stream_count && flush){
3484 pktl= s->packet_buffer;
3487 s->packet_buffer= pktl->next;
3488 if(!s->packet_buffer)
3489 s->packet_buffer_end= NULL;
3491 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3492 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3496 av_init_packet(out);
3501 #if FF_API_INTERLEAVE_PACKET
3502 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out,
3503 AVPacket *pkt, int flush)
3505 return ff_interleave_packet_per_dts(s, out, pkt, flush);
3510 * Interleave an AVPacket correctly so it can be muxed.
3511 * @param out the interleaved packet will be output here
3512 * @param in the input packet
3513 * @param flush 1 if no further packets are available as input and all
3514 * remaining packets should be output
3515 * @return 1 if a packet was output, 0 if no packet could be output,
3516 * < 0 if an error occurred
3518 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3519 if (s->oformat->interleave_packet) {
3520 int ret = s->oformat->interleave_packet(s, out, in, flush);
3525 return ff_interleave_packet_per_dts(s, out, in, flush);
3528 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3532 AVStream *st= s->streams[ pkt->stream_index];
3534 //FIXME/XXX/HACK drop zero sized packets
3535 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3538 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3539 pkt->size, pkt->dts, pkt->pts);
3540 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3543 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3544 return AVERROR(EINVAL);
3546 av_dlog(s, "av_interleaved_write_frame FLUSH\n");
3552 int ret= interleave_packet(s, &opkt, pkt, flush);
3553 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3556 ret= s->oformat->write_packet(s, &opkt);
3558 s->streams[opkt.stream_index]->nb_frames++;
3560 av_free_packet(&opkt);
3565 if(s->pb && s->pb->error)
3566 return s->pb->error;
3570 int av_write_trailer(AVFormatContext *s)
3576 ret= interleave_packet(s, &pkt, NULL, 1);
3577 if(ret<0) //FIXME cleanup needed for ret<0 ?
3582 ret= s->oformat->write_packet(s, &pkt);
3584 s->streams[pkt.stream_index]->nb_frames++;
3586 av_free_packet(&pkt);
3590 if(s->pb && s->pb->error)
3594 if(s->oformat->write_trailer)
3595 ret = s->oformat->write_trailer(s);
3600 ret = s->pb ? s->pb->error : 0;
3601 for(i=0;i<s->nb_streams;i++) {
3602 av_freep(&s->streams[i]->priv_data);
3603 av_freep(&s->streams[i]->index_entries);
3605 if (s->oformat->priv_class)
3606 av_opt_free(s->priv_data);
3607 av_freep(&s->priv_data);
3611 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3612 int64_t *dts, int64_t *wall)
3614 if (!s->oformat || !s->oformat->get_output_timestamp)
3615 return AVERROR(ENOSYS);
3616 s->oformat->get_output_timestamp(s, stream, dts, wall);
3620 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3623 AVProgram *program=NULL;
3626 if (idx >= ac->nb_streams) {
3627 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3631 for(i=0; i<ac->nb_programs; i++){
3632 if(ac->programs[i]->id != progid)
3634 program = ac->programs[i];
3635 for(j=0; j<program->nb_stream_indexes; j++)
3636 if(program->stream_index[j] == idx)
3639 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3642 program->stream_index = tmp;
3643 program->stream_index[program->nb_stream_indexes++] = idx;
3648 static void print_fps(double d, const char *postfix){
3649 uint64_t v= lrintf(d*100);
3650 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3651 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3652 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3655 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3657 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3658 AVDictionaryEntry *tag=NULL;
3660 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3661 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3662 if(strcmp("language", tag->key)){
3663 const char *p = tag->value;
3664 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3667 size_t len = strcspn(p, "\xd\xa");
3668 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3669 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3671 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3672 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3675 av_log(ctx, AV_LOG_INFO, "\n");
3681 /* "user interface" functions */
3682 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3685 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3686 AVStream *st = ic->streams[i];
3687 int g = av_gcd(st->time_base.num, st->time_base.den);
3688 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3689 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3690 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3691 /* the pid is an important information, so we display it */
3692 /* XXX: add a generic system */
3693 if (flags & AVFMT_SHOW_IDS)
3694 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3696 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3697 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3698 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3699 if (st->sample_aspect_ratio.num && // default
3700 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3701 AVRational display_aspect_ratio;
3702 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3703 st->codec->width*st->sample_aspect_ratio.num,
3704 st->codec->height*st->sample_aspect_ratio.den,
3706 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3707 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3708 display_aspect_ratio.num, display_aspect_ratio.den);
3710 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3711 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3712 print_fps(av_q2d(st->avg_frame_rate), "fps");
3713 if(st->r_frame_rate.den && st->r_frame_rate.num)
3714 print_fps(av_q2d(st->r_frame_rate), "tbr");
3715 if(st->time_base.den && st->time_base.num)
3716 print_fps(1/av_q2d(st->time_base), "tbn");
3717 if(st->codec->time_base.den && st->codec->time_base.num)
3718 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3720 if (st->disposition & AV_DISPOSITION_DEFAULT)
3721 av_log(NULL, AV_LOG_INFO, " (default)");
3722 if (st->disposition & AV_DISPOSITION_DUB)
3723 av_log(NULL, AV_LOG_INFO, " (dub)");
3724 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3725 av_log(NULL, AV_LOG_INFO, " (original)");
3726 if (st->disposition & AV_DISPOSITION_COMMENT)
3727 av_log(NULL, AV_LOG_INFO, " (comment)");
3728 if (st->disposition & AV_DISPOSITION_LYRICS)
3729 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3730 if (st->disposition & AV_DISPOSITION_KARAOKE)
3731 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3732 if (st->disposition & AV_DISPOSITION_FORCED)
3733 av_log(NULL, AV_LOG_INFO, " (forced)");
3734 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3735 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3736 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3737 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3738 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3739 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3740 av_log(NULL, AV_LOG_INFO, "\n");
3741 dump_metadata(NULL, st->metadata, " ");
3744 void av_dump_format(AVFormatContext *ic,
3750 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3751 if (ic->nb_streams && !printed)
3754 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3755 is_output ? "Output" : "Input",
3757 is_output ? ic->oformat->name : ic->iformat->name,
3758 is_output ? "to" : "from", url);
3759 dump_metadata(NULL, ic->metadata, " ");
3761 av_log(NULL, AV_LOG_INFO, " Duration: ");
3762 if (ic->duration != AV_NOPTS_VALUE) {
3763 int hours, mins, secs, us;
3764 secs = ic->duration / AV_TIME_BASE;
3765 us = ic->duration % AV_TIME_BASE;
3770 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3771 (100 * us) / AV_TIME_BASE);
3773 av_log(NULL, AV_LOG_INFO, "N/A");
3775 if (ic->start_time != AV_NOPTS_VALUE) {
3777 av_log(NULL, AV_LOG_INFO, ", start: ");
3778 secs = ic->start_time / AV_TIME_BASE;
3779 us = abs(ic->start_time % AV_TIME_BASE);
3780 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3781 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3783 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3785 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3787 av_log(NULL, AV_LOG_INFO, "N/A");
3789 av_log(NULL, AV_LOG_INFO, "\n");
3791 for (i = 0; i < ic->nb_chapters; i++) {
3792 AVChapter *ch = ic->chapters[i];
3793 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3794 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3795 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3797 dump_metadata(NULL, ch->metadata, " ");
3799 if(ic->nb_programs) {
3800 int j, k, total = 0;
3801 for(j=0; j<ic->nb_programs; j++) {
3802 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3804 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3805 name ? name->value : "");
3806 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3807 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3808 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3809 printed[ic->programs[j]->stream_index[k]] = 1;
3811 total += ic->programs[j]->nb_stream_indexes;
3813 if (total < ic->nb_streams)
3814 av_log(NULL, AV_LOG_INFO, " No Program\n");
3816 for(i=0;i<ic->nb_streams;i++)
3818 dump_stream_format(ic, i, index, is_output);
3823 int64_t av_gettime(void)
3826 gettimeofday(&tv,NULL);
3827 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3830 uint64_t ff_ntp_time(void)
3832 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3835 int av_get_frame_filename(char *buf, int buf_size,
3836 const char *path, int number)
3839 char *q, buf1[20], c;
3840 int nd, len, percentd_found;
3852 while (isdigit(*p)) {
3853 nd = nd * 10 + *p++ - '0';
3856 } while (isdigit(c));
3865 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3867 if ((q - buf + len) > buf_size - 1)
3869 memcpy(q, buf1, len);
3877 if ((q - buf) < buf_size - 1)
3881 if (!percentd_found)
3890 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3894 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3896 for(i=0;i<size;i+=16) {
3903 PRINT(" %02x", buf[i+j]);
3908 for(j=0;j<len;j++) {
3910 if (c < ' ' || c > '~')
3919 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3921 hex_dump_internal(NULL, f, 0, buf, size);
3924 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3926 hex_dump_internal(avcl, NULL, level, buf, size);
3929 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3932 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3933 PRINT("stream #%d:\n", pkt->stream_index);
3934 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3935 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3936 /* DTS is _always_ valid after av_read_frame() */
3938 if (pkt->dts == AV_NOPTS_VALUE)
3941 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3942 /* PTS may not be known if B-frames are present. */
3944 if (pkt->pts == AV_NOPTS_VALUE)
3947 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3949 PRINT(" size=%d\n", pkt->size);
3952 av_hex_dump(f, pkt->data, pkt->size);
3956 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3958 AVRational tb = { 1, AV_TIME_BASE };
3959 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3963 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3965 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3969 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3971 AVRational tb = { 1, AV_TIME_BASE };
3972 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3976 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3979 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3982 void av_url_split(char *proto, int proto_size,
3983 char *authorization, int authorization_size,
3984 char *hostname, int hostname_size,
3986 char *path, int path_size,
3989 const char *p, *ls, *at, *col, *brk;
3991 if (port_ptr) *port_ptr = -1;
3992 if (proto_size > 0) proto[0] = 0;
3993 if (authorization_size > 0) authorization[0] = 0;
3994 if (hostname_size > 0) hostname[0] = 0;
3995 if (path_size > 0) path[0] = 0;
3997 /* parse protocol */
3998 if ((p = strchr(url, ':'))) {
3999 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4004 /* no protocol means plain filename */
4005 av_strlcpy(path, url, path_size);
4009 /* separate path from hostname */
4010 ls = strchr(p, '/');
4012 ls = strchr(p, '?');
4014 av_strlcpy(path, ls, path_size);
4016 ls = &p[strlen(p)]; // XXX
4018 /* the rest is hostname, use that to parse auth/port */
4020 /* authorization (user[:pass]@hostname) */
4021 if ((at = strchr(p, '@')) && at < ls) {
4022 av_strlcpy(authorization, p,
4023 FFMIN(authorization_size, at + 1 - p));
4024 p = at + 1; /* skip '@' */
4027 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4029 av_strlcpy(hostname, p + 1,
4030 FFMIN(hostname_size, brk - p));
4031 if (brk[1] == ':' && port_ptr)
4032 *port_ptr = atoi(brk + 2);
4033 } else if ((col = strchr(p, ':')) && col < ls) {
4034 av_strlcpy(hostname, p,
4035 FFMIN(col + 1 - p, hostname_size));
4036 if (port_ptr) *port_ptr = atoi(col + 1);
4038 av_strlcpy(hostname, p,
4039 FFMIN(ls + 1 - p, hostname_size));
4043 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4046 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4049 'C', 'D', 'E', 'F' };
4050 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4053 'c', 'd', 'e', 'f' };
4054 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4056 for(i = 0; i < s; i++) {
4057 buff[i * 2] = hex_table[src[i] >> 4];
4058 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4064 int ff_hex_to_data(uint8_t *data, const char *p)
4071 p += strspn(p, SPACE_CHARS);
4074 c = toupper((unsigned char) *p++);
4075 if (c >= '0' && c <= '9')
4077 else if (c >= 'A' && c <= 'F')
4092 #if FF_API_SET_PTS_INFO
4093 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4094 unsigned int pts_num, unsigned int pts_den)
4096 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4100 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4101 unsigned int pts_num, unsigned int pts_den)
4104 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4105 if(new_tb.num != pts_num)
4106 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4108 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4110 if(new_tb.num <= 0 || new_tb.den <= 0) {
4111 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
4114 s->time_base = new_tb;
4115 s->pts_wrap_bits = pts_wrap_bits;
4118 int ff_url_join(char *str, int size, const char *proto,
4119 const char *authorization, const char *hostname,
4120 int port, const char *fmt, ...)
4123 struct addrinfo hints = { 0 }, *ai;
4128 av_strlcatf(str, size, "%s://", proto);
4129 if (authorization && authorization[0])
4130 av_strlcatf(str, size, "%s@", authorization);
4131 #if CONFIG_NETWORK && defined(AF_INET6)
4132 /* Determine if hostname is a numerical IPv6 address,
4133 * properly escape it within [] in that case. */
4134 hints.ai_flags = AI_NUMERICHOST;
4135 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4136 if (ai->ai_family == AF_INET6) {
4137 av_strlcat(str, "[", size);
4138 av_strlcat(str, hostname, size);
4139 av_strlcat(str, "]", size);
4141 av_strlcat(str, hostname, size);
4146 /* Not an IPv6 address, just output the plain string. */
4147 av_strlcat(str, hostname, size);
4150 av_strlcatf(str, size, ":%d", port);
4153 int len = strlen(str);
4156 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4162 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4163 AVFormatContext *src)
4168 local_pkt.stream_index = dst_stream;
4169 if (pkt->pts != AV_NOPTS_VALUE)
4170 local_pkt.pts = av_rescale_q(pkt->pts,
4171 src->streams[pkt->stream_index]->time_base,
4172 dst->streams[dst_stream]->time_base);
4173 if (pkt->dts != AV_NOPTS_VALUE)
4174 local_pkt.dts = av_rescale_q(pkt->dts,
4175 src->streams[pkt->stream_index]->time_base,
4176 dst->streams[dst_stream]->time_base);
4177 return av_write_frame(dst, &local_pkt);
4180 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4183 const char *ptr = str;
4185 /* Parse key=value pairs. */
4188 char *dest = NULL, *dest_end;
4189 int key_len, dest_len = 0;
4191 /* Skip whitespace and potential commas. */
4192 while (*ptr && (isspace(*ptr) || *ptr == ','))
4199 if (!(ptr = strchr(key, '=')))
4202 key_len = ptr - key;
4204 callback_get_buf(context, key, key_len, &dest, &dest_len);
4205 dest_end = dest + dest_len - 1;
4209 while (*ptr && *ptr != '\"') {
4213 if (dest && dest < dest_end)
4217 if (dest && dest < dest_end)
4225 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4226 if (dest && dest < dest_end)
4234 int ff_find_stream_index(AVFormatContext *s, int id)
4237 for (i = 0; i < s->nb_streams; i++) {
4238 if (s->streams[i]->id == id)
4244 void ff_make_absolute_url(char *buf, int size, const char *base,
4248 /* Absolute path, relative to the current server */
4249 if (base && strstr(base, "://") && rel[0] == '/') {
4251 av_strlcpy(buf, base, size);
4252 sep = strstr(buf, "://");
4255 sep = strchr(sep, '/');
4259 av_strlcat(buf, rel, size);
4262 /* If rel actually is an absolute url, just copy it */
4263 if (!base || strstr(rel, "://") || rel[0] == '/') {
4264 av_strlcpy(buf, rel, size);
4268 av_strlcpy(buf, base, size);
4269 /* Remove the file name from the base url */
4270 sep = strrchr(buf, '/');
4275 while (av_strstart(rel, "../", NULL) && sep) {
4276 /* Remove the path delimiter at the end */
4278 sep = strrchr(buf, '/');
4279 /* If the next directory name to pop off is "..", break here */
4280 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4281 /* Readd the slash we just removed */
4282 av_strlcat(buf, "/", size);
4285 /* Cut off the directory name */
4292 av_strlcat(buf, rel, size);
4295 int64_t ff_iso8601_to_unix_time(const char *datestr)
4298 struct tm time1 = {0}, time2 = {0};
4300 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4301 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4303 return av_timegm(&time2);
4305 return av_timegm(&time1);
4307 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4308 "the date string.\n");
4313 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4316 if (ofmt->query_codec)
4317 return ofmt->query_codec(codec_id, std_compliance);
4318 else if (ofmt->codec_tag)
4319 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4320 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4321 codec_id == ofmt->subtitle_codec)
4324 return AVERROR_PATCHWELCOME;
4327 int avformat_network_init(void)
4331 ff_network_inited_globally = 1;
4332 if ((ret = ff_network_init()) < 0)
4339 int avformat_network_deinit(void)
4348 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4349 uint64_t channel_layout, int32_t sample_rate,
4350 int32_t width, int32_t height)
4356 return AVERROR(EINVAL);
4359 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4361 if (channel_layout) {
4363 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4367 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4369 if (width || height) {
4371 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4373 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4375 return AVERROR(ENOMEM);
4376 bytestream_put_le32(&data, flags);
4378 bytestream_put_le32(&data, channels);
4380 bytestream_put_le64(&data, channel_layout);
4382 bytestream_put_le32(&data, sample_rate);
4383 if (width || height) {
4384 bytestream_put_le32(&data, width);
4385 bytestream_put_le32(&data, height);
4390 const struct AVCodecTag *avformat_get_riff_video_tags(void)
4392 return ff_codec_bmp_tags;
4394 const struct AVCodecTag *avformat_get_riff_audio_tags(void)
4396 return ff_codec_wav_tags;