2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/dict.h"
33 #include "libavutil/pixdesc.h"
36 #include "libavutil/avassert.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/parseutils.h"
41 #include "audiointerleave.h"
55 * various utility functions for use within FFmpeg
58 unsigned avformat_version(void)
60 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
61 return LIBAVFORMAT_VERSION_INT;
64 const char *avformat_configuration(void)
66 return FFMPEG_CONFIGURATION;
69 const char *avformat_license(void)
71 #define LICENSE_PREFIX "libavformat license: "
72 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
75 /* fraction handling */
78 * f = val + (num / den) + 0.5.
80 * 'num' is normalized so that it is such as 0 <= num < den.
82 * @param f fractional number
83 * @param val integer value
84 * @param num must be >= 0
85 * @param den must be >= 1
87 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
100 * Fractional addition to f: f = f + (incr / f->den).
102 * @param f fractional number
103 * @param incr increment, can be positive or negative
105 static void frac_add(AVFrac *f, int64_t incr)
118 } else if (num >= den) {
125 /** head of registered input format linked list */
126 static AVInputFormat *first_iformat = NULL;
127 /** head of registered output format linked list */
128 static AVOutputFormat *first_oformat = NULL;
130 AVInputFormat *av_iformat_next(AVInputFormat *f)
132 if(f) return f->next;
133 else return first_iformat;
136 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
138 if(f) return f->next;
139 else return first_oformat;
142 void av_register_input_format(AVInputFormat *format)
146 while (*p != NULL) p = &(*p)->next;
151 void av_register_output_format(AVOutputFormat *format)
155 while (*p != NULL) p = &(*p)->next;
160 int av_match_ext(const char *filename, const char *extensions)
168 ext = strrchr(filename, '.');
174 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
177 if (!av_strcasecmp(ext1, ext))
187 static int match_format(const char *name, const char *names)
195 namelen = strlen(name);
196 while ((p = strchr(names, ','))) {
197 len = FFMAX(p - names, namelen);
198 if (!av_strncasecmp(name, names, len))
202 return !av_strcasecmp(name, names);
205 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
206 const char *mime_type)
208 AVOutputFormat *fmt = NULL, *fmt_found;
209 int score_max, score;
211 /* specific test for image sequences */
212 #if CONFIG_IMAGE2_MUXER
213 if (!short_name && filename &&
214 av_filename_number_test(filename) &&
215 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
216 return av_guess_format("image2", NULL, NULL);
219 /* Find the proper file type. */
222 while ((fmt = av_oformat_next(fmt))) {
224 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
226 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
228 if (filename && fmt->extensions &&
229 av_match_ext(filename, fmt->extensions)) {
232 if (score > score_max) {
240 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
241 const char *filename, const char *mime_type, enum AVMediaType type){
242 if(type == AVMEDIA_TYPE_VIDEO){
243 enum CodecID codec_id= CODEC_ID_NONE;
245 #if CONFIG_IMAGE2_MUXER
246 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
247 codec_id= ff_guess_image2_codec(filename);
250 if(codec_id == CODEC_ID_NONE)
251 codec_id= fmt->video_codec;
253 }else if(type == AVMEDIA_TYPE_AUDIO)
254 return fmt->audio_codec;
255 else if (type == AVMEDIA_TYPE_SUBTITLE)
256 return fmt->subtitle_codec;
258 return CODEC_ID_NONE;
261 AVInputFormat *av_find_input_format(const char *short_name)
263 AVInputFormat *fmt = NULL;
264 while ((fmt = av_iformat_next(fmt))) {
265 if (match_format(short_name, fmt->name))
271 int ffio_limit(AVIOContext *s, int size)
274 int64_t remaining= s->maxsize - avio_tell(s);
275 if(remaining < size){
276 int64_t newsize= avio_size(s);
277 if(!s->maxsize || s->maxsize<newsize)
278 s->maxsize= newsize - !newsize;
279 remaining= s->maxsize - avio_tell(s);
280 remaining= FFMAX(remaining, 0);
283 if(s->maxsize>=0 && remaining+1 < size){
284 av_log(0, AV_LOG_ERROR, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
291 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
294 size= ffio_limit(s, size);
296 ret= av_new_packet(pkt, size);
301 pkt->pos= avio_tell(s);
303 ret= avio_read(s, pkt->data, size);
307 av_shrink_packet(pkt, ret);
312 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
317 return av_get_packet(s, pkt, size);
318 old_size = pkt->size;
319 ret = av_grow_packet(pkt, size);
322 ret = avio_read(s, pkt->data + old_size, size);
323 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
328 int av_filename_number_test(const char *filename)
331 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
334 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
336 AVProbeData lpd = *pd;
337 AVInputFormat *fmt1 = NULL, *fmt;
338 int score, nodat = 0, score_max=0;
340 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
341 int id3len = ff_id3v2_tag_len(lpd.buf);
342 if (lpd.buf_size > id3len + 16) {
344 lpd.buf_size -= id3len;
350 while ((fmt1 = av_iformat_next(fmt1))) {
351 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
354 if (fmt1->read_probe) {
355 score = fmt1->read_probe(&lpd);
356 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
357 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
358 } else if (fmt1->extensions) {
359 if (av_match_ext(lpd.filename, fmt1->extensions)) {
363 if (score > score_max) {
366 }else if (score == score_max)
369 *score_ret= score_max;
374 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
377 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
378 if(score_ret > *score_max){
379 *score_max= score_ret;
385 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
387 return av_probe_input_format2(pd, is_opened, &score);
390 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
392 static const struct {
393 const char *name; enum CodecID id; enum AVMediaType type;
395 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
396 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
397 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
398 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
399 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
400 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
401 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
402 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
403 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
407 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
411 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
412 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
413 for (i = 0; fmt_id_type[i].name; i++) {
414 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
415 st->codec->codec_id = fmt_id_type[i].id;
416 st->codec->codec_type = fmt_id_type[i].type;
424 /************************************************************/
425 /* input media file */
427 #if FF_API_FORMAT_PARAMETERS
428 static AVDictionary *convert_format_parameters(AVFormatParameters *ap)
431 AVDictionary *opts = NULL;
436 AV_NOWARN_DEPRECATED(
437 if (ap->time_base.num) {
438 snprintf(buf, sizeof(buf), "%d/%d", ap->time_base.den, ap->time_base.num);
439 av_dict_set(&opts, "framerate", buf, 0);
441 if (ap->sample_rate) {
442 snprintf(buf, sizeof(buf), "%d", ap->sample_rate);
443 av_dict_set(&opts, "sample_rate", buf, 0);
446 snprintf(buf, sizeof(buf), "%d", ap->channels);
447 av_dict_set(&opts, "channels", buf, 0);
449 if (ap->width || ap->height) {
450 snprintf(buf, sizeof(buf), "%dx%d", ap->width, ap->height);
451 av_dict_set(&opts, "video_size", buf, 0);
453 if (ap->pix_fmt != PIX_FMT_NONE) {
454 av_dict_set(&opts, "pixel_format", av_get_pix_fmt_name(ap->pix_fmt), 0);
457 snprintf(buf, sizeof(buf), "%d", ap->channel);
458 av_dict_set(&opts, "channel", buf, 0);
461 av_dict_set(&opts, "standard", ap->standard, 0);
463 if (ap->mpeg2ts_compute_pcr) {
464 av_dict_set(&opts, "mpeg2ts_compute_pcr", "1", 0);
466 if (ap->initial_pause) {
467 av_dict_set(&opts, "initial_pause", "1", 0);
474 * Open a media file from an IO stream. 'fmt' must be specified.
476 int av_open_input_stream(AVFormatContext **ic_ptr,
477 AVIOContext *pb, const char *filename,
478 AVInputFormat *fmt, AVFormatParameters *ap)
483 AVFormatParameters default_ap;
487 memset(ap, 0, sizeof(default_ap));
489 opts = convert_format_parameters(ap);
491 AV_NOWARN_DEPRECATED(
492 if(!ap->prealloced_context)
493 *ic_ptr = ic = avformat_alloc_context();
498 err = AVERROR(ENOMEM);
501 if (pb && fmt && fmt->flags & AVFMT_NOFILE)
502 av_log(ic, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
503 "will be ignored with AVFMT_NOFILE format.\n");
507 if ((err = avformat_open_input(&ic, filename, fmt, &opts)) < 0)
509 ic->pb = ic->pb ? ic->pb : pb; // don't leak custom pb if it wasn't set above
518 int av_demuxer_open(AVFormatContext *ic, AVFormatParameters *ap){
521 if (ic->iformat->read_header) {
522 err = ic->iformat->read_header(ic, ap);
527 if (ic->pb && !ic->data_offset)
528 ic->data_offset = avio_tell(ic->pb);
534 /** size of probe buffer, for guessing file type from file contents */
535 #define PROBE_BUF_MIN 2048
536 #define PROBE_BUF_MAX (1<<20)
538 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
539 const char *filename, void *logctx,
540 unsigned int offset, unsigned int max_probe_size)
542 AVProbeData pd = { filename ? filename : "", NULL, -offset };
543 unsigned char *buf = NULL;
544 int ret = 0, probe_size;
546 if (!max_probe_size) {
547 max_probe_size = PROBE_BUF_MAX;
548 } else if (max_probe_size > PROBE_BUF_MAX) {
549 max_probe_size = PROBE_BUF_MAX;
550 } else if (max_probe_size < PROBE_BUF_MIN) {
551 return AVERROR(EINVAL);
554 if (offset >= max_probe_size) {
555 return AVERROR(EINVAL);
558 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
559 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
560 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
561 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
564 if (probe_size < offset) {
568 /* read probe data */
569 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
572 return AVERROR(ENOMEM);
575 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
576 /* fail if error was not end of file, otherwise, lower score */
577 if (ret != AVERROR_EOF) {
582 ret = 0; /* error was end of file, nothing read */
585 pd.buf = &buf[offset];
587 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
589 /* guess file format */
590 *fmt = av_probe_input_format2(&pd, 1, &score);
592 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
593 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
595 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
601 return AVERROR_INVALIDDATA;
604 /* rewind. reuse probe buffer to avoid seeking */
605 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
611 #if FF_API_FORMAT_PARAMETERS
612 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
615 AVFormatParameters *ap)
618 AVDictionary *opts = convert_format_parameters(ap);
620 AV_NOWARN_DEPRECATED(
621 if (!ap || !ap->prealloced_context)
625 err = avformat_open_input(ic_ptr, filename, fmt, &opts);
632 /* open input file and probe the format if necessary */
633 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
636 AVProbeData pd = {filename, NULL, 0};
639 s->flags |= AVFMT_FLAG_CUSTOM_IO;
641 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
642 else if (s->iformat->flags & AVFMT_NOFILE)
643 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
644 "will be ignored with AVFMT_NOFILE format.\n");
648 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
649 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
652 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ,
653 &s->interrupt_callback, options)) < 0)
657 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
660 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
662 AVFormatContext *s = *ps;
664 AVFormatParameters ap = { { 0 } };
665 AVDictionary *tmp = NULL;
667 if (!s && !(s = avformat_alloc_context()))
668 return AVERROR(ENOMEM);
673 av_dict_copy(&tmp, *options, 0);
675 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
678 if ((ret = init_input(s, filename, &tmp)) < 0)
681 /* check filename in case an image number is expected */
682 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
683 if (!av_filename_number_test(filename)) {
684 ret = AVERROR(EINVAL);
689 s->duration = s->start_time = AV_NOPTS_VALUE;
690 av_strlcpy(s->filename, filename, sizeof(s->filename));
692 /* allocate private data */
693 if (s->iformat->priv_data_size > 0) {
694 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
695 ret = AVERROR(ENOMEM);
698 if (s->iformat->priv_class) {
699 *(const AVClass**)s->priv_data = s->iformat->priv_class;
700 av_opt_set_defaults(s->priv_data);
701 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
706 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
708 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC);
710 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
711 if ((ret = s->iformat->read_header(s, &ap)) < 0)
714 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
715 s->data_offset = avio_tell(s->pb);
717 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
720 av_dict_free(options);
728 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
730 avformat_free_context(s);
735 /*******************************************************/
737 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
738 AVPacketList **plast_pktl){
739 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
744 (*plast_pktl)->next = pktl;
746 *packet_buffer = pktl;
748 /* add the packet in the buffered packet list */
754 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
760 AVPacketList *pktl = s->raw_packet_buffer;
764 if(s->streams[pkt->stream_index]->request_probe <= 0){
765 s->raw_packet_buffer = pktl->next;
766 s->raw_packet_buffer_remaining_size += pkt->size;
773 ret= s->iformat->read_packet(s, pkt);
775 if (!pktl || ret == AVERROR(EAGAIN))
777 for (i = 0; i < s->nb_streams; i++)
778 if(s->streams[i]->request_probe > 0)
779 s->streams[i]->request_probe = -1;
783 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
784 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
785 av_log(s, AV_LOG_WARNING,
786 "Dropped corrupted packet (stream = %d)\n",
792 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
793 av_packet_merge_side_data(pkt);
795 if(pkt->stream_index >= (unsigned)s->nb_streams){
796 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
800 st= s->streams[pkt->stream_index];
802 switch(st->codec->codec_type){
803 case AVMEDIA_TYPE_VIDEO:
804 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
806 case AVMEDIA_TYPE_AUDIO:
807 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
809 case AVMEDIA_TYPE_SUBTITLE:
810 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
814 if(!pktl && st->request_probe <= 0)
817 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
818 s->raw_packet_buffer_remaining_size -= pkt->size;
820 if(st->request_probe>0){
821 AVProbeData *pd = &st->probe_data;
823 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
826 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
827 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
828 pd->buf_size += pkt->size;
829 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
831 end= s->raw_packet_buffer_remaining_size <= 0
832 || st->probe_packets<=0;
834 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
835 int score= set_codec_from_probe_data(s, st, pd);
836 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
840 st->request_probe= -1;
841 if(st->codec->codec_id != CODEC_ID_NONE){
842 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
844 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
851 /**********************************************************/
854 * Get the number of samples of an audio frame. Return -1 on error.
856 static int get_audio_frame_size(AVCodecContext *enc, int size)
860 if(enc->codec_id == CODEC_ID_VORBIS)
863 if (enc->frame_size <= 1) {
864 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
866 if (bits_per_sample) {
867 if (enc->channels == 0)
869 frame_size = (size << 3) / (bits_per_sample * enc->channels);
871 /* used for example by ADPCM codecs */
872 if (enc->bit_rate == 0)
874 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
877 frame_size = enc->frame_size;
884 * Return the frame duration in seconds. Return 0 if not available.
886 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
887 AVCodecParserContext *pc, AVPacket *pkt)
893 switch(st->codec->codec_type) {
894 case AVMEDIA_TYPE_VIDEO:
895 if (st->r_frame_rate.num && !pc) {
896 *pnum = st->r_frame_rate.den;
897 *pden = st->r_frame_rate.num;
898 } else if(st->time_base.num*1000LL > st->time_base.den) {
899 *pnum = st->time_base.num;
900 *pden = st->time_base.den;
901 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
902 *pnum = st->codec->time_base.num;
903 *pden = st->codec->time_base.den;
904 if (pc && pc->repeat_pict) {
905 *pnum = (*pnum) * (1 + pc->repeat_pict);
907 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
908 //Thus if we have no parser in such case leave duration undefined.
909 if(st->codec->ticks_per_frame>1 && !pc){
914 case AVMEDIA_TYPE_AUDIO:
915 frame_size = get_audio_frame_size(st->codec, pkt->size);
916 if (frame_size <= 0 || st->codec->sample_rate <= 0)
919 *pden = st->codec->sample_rate;
926 static int is_intra_only(AVCodecContext *enc){
927 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
929 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
930 switch(enc->codec_id){
932 case CODEC_ID_MJPEGB:
934 case CODEC_ID_PRORES:
935 case CODEC_ID_RAWVIDEO:
936 case CODEC_ID_DVVIDEO:
937 case CODEC_ID_HUFFYUV:
938 case CODEC_ID_FFVHUFF:
943 case CODEC_ID_JPEG2000:
951 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
952 int64_t dts, int64_t pts)
954 AVStream *st= s->streams[stream_index];
955 AVPacketList *pktl= s->packet_buffer;
957 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
960 st->first_dts= dts - st->cur_dts;
963 for(; pktl; pktl= pktl->next){
964 if(pktl->pkt.stream_index != stream_index)
966 //FIXME think more about this check
967 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
968 pktl->pkt.pts += st->first_dts;
970 if(pktl->pkt.dts != AV_NOPTS_VALUE)
971 pktl->pkt.dts += st->first_dts;
973 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
974 st->start_time= pktl->pkt.pts;
976 if (st->start_time == AV_NOPTS_VALUE)
977 st->start_time = pts;
980 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
982 AVPacketList *pktl= s->packet_buffer;
985 if(st->first_dts != AV_NOPTS_VALUE){
986 cur_dts= st->first_dts;
987 for(; pktl; pktl= pktl->next){
988 if(pktl->pkt.stream_index == pkt->stream_index){
989 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
991 cur_dts -= pkt->duration;
994 pktl= s->packet_buffer;
995 st->first_dts = cur_dts;
996 }else if(st->cur_dts)
999 for(; pktl; pktl= pktl->next){
1000 if(pktl->pkt.stream_index != pkt->stream_index)
1002 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
1003 && !pktl->pkt.duration){
1004 pktl->pkt.dts= cur_dts;
1005 if(!st->codec->has_b_frames)
1006 pktl->pkt.pts= cur_dts;
1007 cur_dts += pkt->duration;
1008 pktl->pkt.duration= pkt->duration;
1012 if(st->first_dts == AV_NOPTS_VALUE)
1013 st->cur_dts= cur_dts;
1016 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1017 AVCodecParserContext *pc, AVPacket *pkt)
1019 int num, den, presentation_delayed, delay, i;
1022 if (s->flags & AVFMT_FLAG_NOFILLIN)
1025 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1026 pkt->dts= AV_NOPTS_VALUE;
1028 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1029 //FIXME Set low_delay = 0 when has_b_frames = 1
1030 st->codec->has_b_frames = 1;
1032 /* do we have a video B-frame ? */
1033 delay= st->codec->has_b_frames;
1034 presentation_delayed = 0;
1036 /* XXX: need has_b_frame, but cannot get it if the codec is
1039 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1040 presentation_delayed = 1;
1042 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){
1043 pkt->dts -= 1LL<<st->pts_wrap_bits;
1046 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1047 // we take the conservative approach and discard both
1048 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1049 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1050 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1051 pkt->dts= AV_NOPTS_VALUE;
1054 if (pkt->duration == 0) {
1055 compute_frame_duration(&num, &den, st, pc, pkt);
1057 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1059 if(pkt->duration != 0 && s->packet_buffer)
1060 update_initial_durations(s, st, pkt);
1064 /* correct timestamps with byte offset if demuxers only have timestamps
1065 on packet boundaries */
1066 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1067 /* this will estimate bitrate based on this frame's duration and size */
1068 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1069 if(pkt->pts != AV_NOPTS_VALUE)
1071 if(pkt->dts != AV_NOPTS_VALUE)
1075 if (pc && pc->dts_sync_point >= 0) {
1076 // we have synchronization info from the parser
1077 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1079 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1080 if (pkt->dts != AV_NOPTS_VALUE) {
1081 // got DTS from the stream, update reference timestamp
1082 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1083 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1084 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1085 // compute DTS based on reference timestamp
1086 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1087 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1089 if (pc->dts_sync_point > 0)
1090 st->reference_dts = pkt->dts; // new reference
1094 /* This may be redundant, but it should not hurt. */
1095 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1096 presentation_delayed = 1;
1098 // av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc);
1099 /* interpolate PTS and DTS if they are not present */
1100 //We skip H264 currently because delay and has_b_frames are not reliably set
1101 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1102 if (presentation_delayed) {
1103 /* DTS = decompression timestamp */
1104 /* PTS = presentation timestamp */
1105 if (pkt->dts == AV_NOPTS_VALUE)
1106 pkt->dts = st->last_IP_pts;
1107 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1108 if (pkt->dts == AV_NOPTS_VALUE)
1109 pkt->dts = st->cur_dts;
1111 /* this is tricky: the dts must be incremented by the duration
1112 of the frame we are displaying, i.e. the last I- or P-frame */
1113 if (st->last_IP_duration == 0)
1114 st->last_IP_duration = pkt->duration;
1115 if(pkt->dts != AV_NOPTS_VALUE)
1116 st->cur_dts = pkt->dts + st->last_IP_duration;
1117 st->last_IP_duration = pkt->duration;
1118 st->last_IP_pts= pkt->pts;
1119 /* cannot compute PTS if not present (we can compute it only
1120 by knowing the future */
1121 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
1122 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
1123 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
1124 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1125 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
1126 pkt->pts += pkt->duration;
1127 // 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);
1131 /* presentation is not delayed : PTS and DTS are the same */
1132 if(pkt->pts == AV_NOPTS_VALUE)
1133 pkt->pts = pkt->dts;
1134 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1135 if(pkt->pts == AV_NOPTS_VALUE)
1136 pkt->pts = st->cur_dts;
1137 pkt->dts = pkt->pts;
1138 if(pkt->pts != AV_NOPTS_VALUE)
1139 st->cur_dts = pkt->pts + pkt->duration;
1143 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1144 st->pts_buffer[0]= pkt->pts;
1145 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1146 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1147 if(pkt->dts == AV_NOPTS_VALUE)
1148 pkt->dts= st->pts_buffer[0];
1149 if(st->codec->codec_id == CODEC_ID_H264){ // we skipped it above so we try here
1150 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1152 if(pkt->dts > st->cur_dts)
1153 st->cur_dts = pkt->dts;
1156 // 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);
1159 if(is_intra_only(st->codec))
1160 pkt->flags |= AV_PKT_FLAG_KEY;
1163 /* keyframe computation */
1164 if (pc->key_frame == 1)
1165 pkt->flags |= AV_PKT_FLAG_KEY;
1166 else if (pc->key_frame == -1 && pc->pict_type == AV_PICTURE_TYPE_I)
1167 pkt->flags |= AV_PKT_FLAG_KEY;
1170 pkt->convergence_duration = pc->convergence_duration;
1174 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1179 av_init_packet(pkt);
1182 /* select current input stream component */
1185 if (!st->need_parsing || !st->parser) {
1186 /* no parsing needed: we just output the packet as is */
1187 /* raw data support */
1189 st->cur_pkt.data= NULL;
1190 st->cur_pkt.side_data_elems = 0;
1191 st->cur_pkt.side_data = NULL;
1192 compute_pkt_fields(s, st, NULL, pkt);
1194 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1195 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1196 ff_reduce_index(s, st->index);
1197 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1200 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1201 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1202 st->cur_ptr, st->cur_len,
1203 st->cur_pkt.pts, st->cur_pkt.dts,
1205 st->cur_pkt.pts = AV_NOPTS_VALUE;
1206 st->cur_pkt.dts = AV_NOPTS_VALUE;
1207 /* increment read pointer */
1211 /* return packet if any */
1215 pkt->stream_index = st->index;
1216 pkt->pts = st->parser->pts;
1217 pkt->dts = st->parser->dts;
1218 pkt->pos = st->parser->pos;
1219 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1221 pkt->destruct= st->cur_pkt.destruct;
1222 st->cur_pkt.destruct= NULL;
1223 st->cur_pkt.data = NULL;
1224 assert(st->cur_len == 0);
1226 pkt->destruct = NULL;
1228 compute_pkt_fields(s, st, st->parser, pkt);
1230 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1231 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->pos : st->parser->frame_offset;
1232 ff_reduce_index(s, st->index);
1233 av_add_index_entry(st, pos, pkt->dts,
1234 0, 0, AVINDEX_KEYFRAME);
1241 av_free_packet(&st->cur_pkt);
1246 /* read next packet */
1247 ret = av_read_packet(s, &cur_pkt);
1249 if (ret == AVERROR(EAGAIN))
1251 /* return the last frames, if any */
1252 for(i = 0; i < s->nb_streams; i++) {
1254 if (st->parser && st->need_parsing) {
1255 av_parser_parse2(st->parser, st->codec,
1256 &pkt->data, &pkt->size,
1258 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1264 /* no more packets: really terminate parsing */
1267 st = s->streams[cur_pkt.stream_index];
1268 st->cur_pkt= cur_pkt;
1270 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1271 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1272 st->cur_pkt.pts < st->cur_pkt.dts){
1273 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1274 st->cur_pkt.stream_index,
1278 // av_free_packet(&st->cur_pkt);
1282 if(s->debug & FF_FDEBUG_TS)
1283 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1284 st->cur_pkt.stream_index,
1288 st->cur_pkt.duration,
1292 st->cur_ptr = st->cur_pkt.data;
1293 st->cur_len = st->cur_pkt.size;
1294 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1295 st->parser = av_parser_init(st->codec->codec_id);
1297 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1298 "%s, packets or times may be invalid.\n",
1299 avcodec_get_name(st->codec->codec_id));
1300 /* no parser available: just output the raw packets */
1301 st->need_parsing = AVSTREAM_PARSE_NONE;
1302 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1303 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1304 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1305 st->parser->flags |= PARSER_FLAG_ONCE;
1310 if(s->debug & FF_FDEBUG_TS)
1311 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1322 static int read_from_packet_buffer(AVFormatContext *s, AVPacket *pkt)
1324 AVPacketList *pktl = s->packet_buffer;
1327 s->packet_buffer = pktl->next;
1332 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1334 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1338 return s->packet_buffer ? read_from_packet_buffer(s, pkt) :
1339 read_frame_internal(s, pkt);
1343 AVPacketList *pktl = s->packet_buffer;
1346 AVPacket *next_pkt = &pktl->pkt;
1348 if (next_pkt->dts != AV_NOPTS_VALUE) {
1349 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1350 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1351 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1352 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0) &&
1353 av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1354 next_pkt->pts = pktl->pkt.dts;
1358 pktl = s->packet_buffer;
1361 /* read packet from packet buffer, if there is data */
1362 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1363 next_pkt->dts != AV_NOPTS_VALUE && !eof))
1364 return read_from_packet_buffer(s, pkt);
1367 ret = read_frame_internal(s, pkt);
1369 if (pktl && ret != AVERROR(EAGAIN)) {
1376 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1377 &s->packet_buffer_end)) < 0)
1378 return AVERROR(ENOMEM);
1382 /* XXX: suppress the packet queue */
1383 static void flush_packet_queue(AVFormatContext *s)
1388 pktl = s->packet_buffer;
1391 s->packet_buffer = pktl->next;
1392 av_free_packet(&pktl->pkt);
1395 while(s->raw_packet_buffer){
1396 pktl = s->raw_packet_buffer;
1397 s->raw_packet_buffer = pktl->next;
1398 av_free_packet(&pktl->pkt);
1401 s->packet_buffer_end=
1402 s->raw_packet_buffer_end= NULL;
1403 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1406 /*******************************************************/
1409 int av_find_default_stream_index(AVFormatContext *s)
1411 int first_audio_index = -1;
1415 if (s->nb_streams <= 0)
1417 for(i = 0; i < s->nb_streams; i++) {
1419 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1422 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1423 first_audio_index = i;
1425 return first_audio_index >= 0 ? first_audio_index : 0;
1429 * Flush the frame reader.
1431 void ff_read_frame_flush(AVFormatContext *s)
1436 flush_packet_queue(s);
1440 /* for each stream, reset read state */
1441 for(i = 0; i < s->nb_streams; i++) {
1445 av_parser_close(st->parser);
1447 av_free_packet(&st->cur_pkt);
1449 st->last_IP_pts = AV_NOPTS_VALUE;
1450 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = 0;
1451 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1452 st->reference_dts = AV_NOPTS_VALUE;
1457 st->probe_packets = MAX_PROBE_PACKETS;
1459 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1460 st->pts_buffer[j]= AV_NOPTS_VALUE;
1464 #if FF_API_SEEK_PUBLIC
1465 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1467 ff_update_cur_dts(s, ref_st, timestamp);
1471 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1475 for(i = 0; i < s->nb_streams; i++) {
1476 AVStream *st = s->streams[i];
1478 st->cur_dts = av_rescale(timestamp,
1479 st->time_base.den * (int64_t)ref_st->time_base.num,
1480 st->time_base.num * (int64_t)ref_st->time_base.den);
1484 void ff_reduce_index(AVFormatContext *s, int stream_index)
1486 AVStream *st= s->streams[stream_index];
1487 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1489 if((unsigned)st->nb_index_entries >= max_entries){
1491 for(i=0; 2*i<st->nb_index_entries; i++)
1492 st->index_entries[i]= st->index_entries[2*i];
1493 st->nb_index_entries= i;
1497 int ff_add_index_entry(AVIndexEntry **index_entries,
1498 int *nb_index_entries,
1499 unsigned int *index_entries_allocated_size,
1500 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1502 AVIndexEntry *entries, *ie;
1505 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1508 entries = av_fast_realloc(*index_entries,
1509 index_entries_allocated_size,
1510 (*nb_index_entries + 1) *
1511 sizeof(AVIndexEntry));
1515 *index_entries= entries;
1517 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1520 index= (*nb_index_entries)++;
1521 ie= &entries[index];
1522 assert(index==0 || ie[-1].timestamp < timestamp);
1524 ie= &entries[index];
1525 if(ie->timestamp != timestamp){
1526 if(ie->timestamp <= timestamp)
1528 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1529 (*nb_index_entries)++;
1530 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1531 distance= ie->min_distance;
1535 ie->timestamp = timestamp;
1536 ie->min_distance= distance;
1543 int av_add_index_entry(AVStream *st,
1544 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1546 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1547 &st->index_entries_allocated_size, pos,
1548 timestamp, size, distance, flags);
1551 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1552 int64_t wanted_timestamp, int flags)
1560 //optimize appending index entries at the end
1561 if(b && entries[b-1].timestamp < wanted_timestamp)
1566 timestamp = entries[m].timestamp;
1567 if(timestamp >= wanted_timestamp)
1569 if(timestamp <= wanted_timestamp)
1572 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1574 if(!(flags & AVSEEK_FLAG_ANY)){
1575 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1576 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1585 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1588 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1589 wanted_timestamp, flags);
1592 #if FF_API_SEEK_PUBLIC
1593 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1594 return ff_seek_frame_binary(s, stream_index, target_ts, flags);
1598 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1600 AVInputFormat *avif= s->iformat;
1601 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1602 int64_t ts_min, ts_max, ts;
1607 if (stream_index < 0)
1610 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1613 ts_min= AV_NOPTS_VALUE;
1614 pos_limit= -1; //gcc falsely says it may be uninitialized
1616 st= s->streams[stream_index];
1617 if(st->index_entries){
1620 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()
1621 index= FFMAX(index, 0);
1622 e= &st->index_entries[index];
1624 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1626 ts_min= e->timestamp;
1627 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1633 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1634 assert(index < st->nb_index_entries);
1636 e= &st->index_entries[index];
1637 assert(e->timestamp >= target_ts);
1639 ts_max= e->timestamp;
1640 pos_limit= pos_max - e->min_distance;
1641 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1642 pos_max,pos_limit, ts_max);
1646 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1651 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1654 ff_read_frame_flush(s);
1655 ff_update_cur_dts(s, st, ts);
1660 #if FF_API_SEEK_PUBLIC
1661 int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1662 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1663 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1664 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1666 return ff_gen_search(s, stream_index, target_ts, pos_min, pos_max,
1667 pos_limit, ts_min, ts_max, flags, ts_ret,
1672 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1673 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1674 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1675 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1678 int64_t start_pos, filesize;
1681 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1683 if(ts_min == AV_NOPTS_VALUE){
1684 pos_min = s->data_offset;
1685 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1686 if (ts_min == AV_NOPTS_VALUE)
1690 if(ts_min >= target_ts){
1695 if(ts_max == AV_NOPTS_VALUE){
1697 filesize = avio_size(s->pb);
1698 pos_max = filesize - 1;
1701 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1703 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1704 if (ts_max == AV_NOPTS_VALUE)
1708 int64_t tmp_pos= pos_max + 1;
1709 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1710 if(tmp_ts == AV_NOPTS_VALUE)
1714 if(tmp_pos >= filesize)
1720 if(ts_max <= target_ts){
1725 if(ts_min > ts_max){
1727 }else if(ts_min == ts_max){
1732 while (pos_min < pos_limit) {
1733 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1734 pos_min, pos_max, ts_min, ts_max);
1735 assert(pos_limit <= pos_max);
1738 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1739 // interpolate position (better than dichotomy)
1740 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1741 + pos_min - approximate_keyframe_distance;
1742 }else if(no_change==1){
1743 // bisection, if interpolation failed to change min or max pos last time
1744 pos = (pos_min + pos_limit)>>1;
1746 /* linear search if bisection failed, can only happen if there
1747 are very few or no keyframes between min/max */
1752 else if(pos > pos_limit)
1756 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1761 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1762 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1763 pos_limit, start_pos, no_change);
1764 if(ts == AV_NOPTS_VALUE){
1765 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1768 assert(ts != AV_NOPTS_VALUE);
1769 if (target_ts <= ts) {
1770 pos_limit = start_pos - 1;
1774 if (target_ts >= ts) {
1780 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1781 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1784 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1786 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1787 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1788 pos, ts_min, target_ts, ts_max);
1794 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1795 int64_t pos_min, pos_max;
1799 if (stream_index < 0)
1802 st= s->streams[stream_index];
1805 pos_min = s->data_offset;
1806 pos_max = avio_size(s->pb) - 1;
1808 if (pos < pos_min) pos= pos_min;
1809 else if(pos > pos_max) pos= pos_max;
1811 avio_seek(s->pb, pos, SEEK_SET);
1814 av_update_cur_dts(s, st, ts);
1819 static int seek_frame_generic(AVFormatContext *s,
1820 int stream_index, int64_t timestamp, int flags)
1827 st = s->streams[stream_index];
1829 index = av_index_search_timestamp(st, timestamp, flags);
1831 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1834 if(index < 0 || index==st->nb_index_entries-1){
1838 if(st->nb_index_entries){
1839 assert(st->index_entries);
1840 ie= &st->index_entries[st->nb_index_entries-1];
1841 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1843 ff_update_cur_dts(s, st, ie->timestamp);
1845 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1851 read_status = av_read_frame(s, &pkt);
1852 } while (read_status == AVERROR(EAGAIN));
1853 if (read_status < 0)
1855 av_free_packet(&pkt);
1856 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1857 if(pkt.flags & AV_PKT_FLAG_KEY)
1859 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1860 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);
1865 index = av_index_search_timestamp(st, timestamp, flags);
1870 ff_read_frame_flush(s);
1871 AV_NOWARN_DEPRECATED(
1872 if (s->iformat->read_seek){
1873 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1877 ie = &st->index_entries[index];
1878 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1880 ff_update_cur_dts(s, st, ie->timestamp);
1885 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1890 if (flags & AVSEEK_FLAG_BYTE) {
1891 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1893 ff_read_frame_flush(s);
1894 return seek_frame_byte(s, stream_index, timestamp, flags);
1897 if(stream_index < 0){
1898 stream_index= av_find_default_stream_index(s);
1899 if(stream_index < 0)
1902 st= s->streams[stream_index];
1903 /* timestamp for default must be expressed in AV_TIME_BASE units */
1904 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1907 /* first, we try the format specific seek */
1908 AV_NOWARN_DEPRECATED(
1909 if (s->iformat->read_seek) {
1910 ff_read_frame_flush(s);
1911 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1919 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1920 ff_read_frame_flush(s);
1921 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1922 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1923 ff_read_frame_flush(s);
1924 return seek_frame_generic(s, stream_index, timestamp, flags);
1930 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1932 if(min_ts > ts || max_ts < ts)
1935 if (s->iformat->read_seek2) {
1936 ff_read_frame_flush(s);
1937 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1940 if(s->iformat->read_timestamp){
1941 //try to seek via read_timestamp()
1944 //Fallback to old API if new is not implemented but old is
1945 //Note the old has somewat different sematics
1946 AV_NOWARN_DEPRECATED(
1947 if(s->iformat->read_seek || 1)
1948 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1951 // try some generic seek like seek_frame_generic() but with new ts semantics
1954 /*******************************************************/
1957 * Return TRUE if the stream has accurate duration in any stream.
1959 * @return TRUE if the stream has accurate duration for at least one component.
1961 static int has_duration(AVFormatContext *ic)
1965 if(ic->duration != AV_NOPTS_VALUE)
1968 for(i = 0;i < ic->nb_streams; i++) {
1969 st = ic->streams[i];
1970 if (st->duration != AV_NOPTS_VALUE)
1977 * Estimate the stream timings from the one of each components.
1979 * Also computes the global bitrate if possible.
1981 static void update_stream_timings(AVFormatContext *ic)
1983 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1984 int64_t duration, duration1, filesize;
1988 start_time = INT64_MAX;
1989 start_time_text = INT64_MAX;
1990 end_time = INT64_MIN;
1991 duration = INT64_MIN;
1992 for(i = 0;i < ic->nb_streams; i++) {
1993 st = ic->streams[i];
1994 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1995 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1996 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1997 if (start_time1 < start_time_text)
1998 start_time_text = start_time1;
2000 start_time = FFMIN(start_time, start_time1);
2001 if (st->duration != AV_NOPTS_VALUE) {
2002 end_time1 = start_time1
2003 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2004 end_time = FFMAX(end_time, end_time1);
2007 if (st->duration != AV_NOPTS_VALUE) {
2008 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2009 duration = FFMAX(duration, duration1);
2012 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2013 start_time = start_time_text;
2014 if (start_time != INT64_MAX) {
2015 ic->start_time = start_time;
2016 if (end_time != INT64_MIN)
2017 duration = FFMAX(duration, end_time - start_time);
2019 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
2020 ic->duration = duration;
2022 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2023 /* compute the bitrate */
2024 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
2025 (double)ic->duration;
2029 static void fill_all_stream_timings(AVFormatContext *ic)
2034 update_stream_timings(ic);
2035 for(i = 0;i < ic->nb_streams; i++) {
2036 st = ic->streams[i];
2037 if (st->start_time == AV_NOPTS_VALUE) {
2038 if(ic->start_time != AV_NOPTS_VALUE)
2039 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2040 if(ic->duration != AV_NOPTS_VALUE)
2041 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2046 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2048 int64_t filesize, duration;
2052 /* if bit_rate is already set, we believe it */
2053 if (ic->bit_rate <= 0) {
2055 for(i=0;i<ic->nb_streams;i++) {
2056 st = ic->streams[i];
2057 if (st->codec->bit_rate > 0)
2058 bit_rate += st->codec->bit_rate;
2060 ic->bit_rate = bit_rate;
2063 /* if duration is already set, we believe it */
2064 if (ic->duration == AV_NOPTS_VALUE &&
2065 ic->bit_rate != 0) {
2066 filesize = ic->pb ? avio_size(ic->pb) : 0;
2068 for(i = 0; i < ic->nb_streams; i++) {
2069 st = ic->streams[i];
2070 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2071 if (st->duration == AV_NOPTS_VALUE)
2072 st->duration = duration;
2078 #define DURATION_MAX_READ_SIZE 250000
2079 #define DURATION_MAX_RETRY 3
2081 /* only usable for MPEG-PS streams */
2082 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2084 AVPacket pkt1, *pkt = &pkt1;
2086 int read_size, i, ret;
2088 int64_t filesize, offset, duration;
2093 /* flush packet queue */
2094 flush_packet_queue(ic);
2096 for (i=0; i<ic->nb_streams; i++) {
2097 st = ic->streams[i];
2098 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2099 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2102 av_parser_close(st->parser);
2104 av_free_packet(&st->cur_pkt);
2108 /* estimate the end time (duration) */
2109 /* XXX: may need to support wrapping */
2110 filesize = ic->pb ? avio_size(ic->pb) : 0;
2111 end_time = AV_NOPTS_VALUE;
2113 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2117 avio_seek(ic->pb, offset, SEEK_SET);
2120 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2124 ret = av_read_packet(ic, pkt);
2125 } while(ret == AVERROR(EAGAIN));
2128 read_size += pkt->size;
2129 st = ic->streams[pkt->stream_index];
2130 if (pkt->pts != AV_NOPTS_VALUE &&
2131 (st->start_time != AV_NOPTS_VALUE ||
2132 st->first_dts != AV_NOPTS_VALUE)) {
2133 duration = end_time = pkt->pts;
2134 if (st->start_time != AV_NOPTS_VALUE)
2135 duration -= st->start_time;
2137 duration -= st->first_dts;
2139 duration += 1LL<<st->pts_wrap_bits;
2141 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2142 st->duration = duration;
2145 av_free_packet(pkt);
2147 }while( end_time==AV_NOPTS_VALUE
2148 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2149 && ++retry <= DURATION_MAX_RETRY);
2151 fill_all_stream_timings(ic);
2153 avio_seek(ic->pb, old_offset, SEEK_SET);
2154 for (i=0; i<ic->nb_streams; i++) {
2156 st->cur_dts= st->first_dts;
2157 st->last_IP_pts = AV_NOPTS_VALUE;
2158 st->reference_dts = AV_NOPTS_VALUE;
2162 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2166 /* get the file size, if possible */
2167 if (ic->iformat->flags & AVFMT_NOFILE) {
2170 file_size = avio_size(ic->pb);
2171 file_size = FFMAX(0, file_size);
2174 if ((!strcmp(ic->iformat->name, "mpeg") ||
2175 !strcmp(ic->iformat->name, "mpegts")) &&
2176 file_size && ic->pb->seekable) {
2177 /* get accurate estimate from the PTSes */
2178 estimate_timings_from_pts(ic, old_offset);
2179 } else if (has_duration(ic)) {
2180 /* at least one component has timings - we use them for all
2182 fill_all_stream_timings(ic);
2184 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2185 /* less precise: use bitrate info */
2186 estimate_timings_from_bit_rate(ic);
2188 update_stream_timings(ic);
2192 AVStream av_unused *st;
2193 for(i = 0;i < ic->nb_streams; i++) {
2194 st = ic->streams[i];
2195 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2196 (double) st->start_time / AV_TIME_BASE,
2197 (double) st->duration / AV_TIME_BASE);
2199 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2200 (double) ic->start_time / AV_TIME_BASE,
2201 (double) ic->duration / AV_TIME_BASE,
2202 ic->bit_rate / 1000);
2206 static int has_codec_parameters(AVCodecContext *avctx)
2209 switch (avctx->codec_type) {
2210 case AVMEDIA_TYPE_AUDIO:
2211 val = avctx->sample_rate && avctx->channels && avctx->sample_fmt != AV_SAMPLE_FMT_NONE;
2212 if (!avctx->frame_size &&
2213 (avctx->codec_id == CODEC_ID_VORBIS ||
2214 avctx->codec_id == CODEC_ID_AAC ||
2215 avctx->codec_id == CODEC_ID_MP1 ||
2216 avctx->codec_id == CODEC_ID_MP2 ||
2217 avctx->codec_id == CODEC_ID_MP3 ||
2218 avctx->codec_id == CODEC_ID_CELT))
2221 case AVMEDIA_TYPE_VIDEO:
2222 val = avctx->width && avctx->pix_fmt != PIX_FMT_NONE;
2224 case AVMEDIA_TYPE_DATA:
2225 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2230 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2233 static int has_decode_delay_been_guessed(AVStream *st)
2235 return st->codec->codec_id != CODEC_ID_H264 ||
2236 st->info->nb_decoded_frames >= 6;
2239 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2242 int got_picture = 1, ret = 0;
2244 AVPacket pkt = *avpkt;
2246 if(!st->codec->codec){
2247 codec = avcodec_find_decoder(st->codec->codec_id);
2250 ret = avcodec_open2(st->codec, codec, options);
2255 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2257 (!has_codec_parameters(st->codec) ||
2258 !has_decode_delay_been_guessed(st) ||
2259 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2261 avcodec_get_frame_defaults(&picture);
2262 switch(st->codec->codec_type) {
2263 case AVMEDIA_TYPE_VIDEO:
2264 ret = avcodec_decode_video2(st->codec, &picture,
2265 &got_picture, &pkt);
2267 case AVMEDIA_TYPE_AUDIO:
2268 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2275 st->info->nb_decoded_frames++;
2280 if(!pkt.data && !got_picture)
2285 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2287 while (tags->id != CODEC_ID_NONE) {
2295 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2298 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2299 if(tag == tags[i].tag)
2302 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2303 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2306 return CODEC_ID_NONE;
2309 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2312 for(i=0; tags && tags[i]; i++){
2313 int tag= ff_codec_get_tag(tags[i], id);
2319 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2322 for(i=0; tags && tags[i]; i++){
2323 enum CodecID id= ff_codec_get_id(tags[i], tag);
2324 if(id!=CODEC_ID_NONE) return id;
2326 return CODEC_ID_NONE;
2329 static void compute_chapters_end(AVFormatContext *s)
2332 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2334 for (i = 0; i < s->nb_chapters; i++)
2335 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2336 AVChapter *ch = s->chapters[i];
2337 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2340 for (j = 0; j < s->nb_chapters; j++) {
2341 AVChapter *ch1 = s->chapters[j];
2342 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2343 if (j != i && next_start > ch->start && next_start < end)
2346 ch->end = (end == INT64_MAX) ? ch->start : end;
2350 static int get_std_framerate(int i){
2351 if(i<60*12) return i*1001;
2352 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2356 * Is the time base unreliable.
2357 * This is a heuristic to balance between quick acceptance of the values in
2358 * the headers vs. some extra checks.
2359 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2360 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2361 * And there are "variable" fps files this needs to detect as well.
2363 static int tb_unreliable(AVCodecContext *c){
2364 if( c->time_base.den >= 101L*c->time_base.num
2365 || c->time_base.den < 5L*c->time_base.num
2366 /* || c->codec_tag == AV_RL32("DIVX")
2367 || c->codec_tag == AV_RL32("XVID")*/
2368 || c->codec_id == CODEC_ID_MPEG2VIDEO
2369 || c->codec_id == CODEC_ID_H264
2375 #if FF_API_FORMAT_PARAMETERS
2376 int av_find_stream_info(AVFormatContext *ic)
2378 return avformat_find_stream_info(ic, NULL);
2382 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2384 int i, count, ret, read_size, j;
2386 AVPacket pkt1, *pkt;
2387 AVDictionary *one_thread_opt = NULL;
2388 int64_t old_offset = avio_tell(ic->pb);
2389 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2390 int flush_codecs = 1;
2392 av_dict_set(&one_thread_opt, "threads", "1", 0);
2394 for(i=0;i<ic->nb_streams;i++) {
2396 st = ic->streams[i];
2398 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2399 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2400 /* if(!st->time_base.num)
2402 if(!st->codec->time_base.num)
2403 st->codec->time_base= st->time_base;
2405 //only for the split stuff
2406 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2407 st->parser = av_parser_init(st->codec->codec_id);
2408 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2409 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2412 assert(!st->codec->codec);
2413 codec = avcodec_find_decoder(st->codec->codec_id);
2416 av_dict_set(&options[i], "threads", "1", 0);
2418 /* Ensure that subtitle_header is properly set. */
2419 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2420 && codec && !st->codec->codec)
2421 avcodec_open2(st->codec, codec, options ? &options[i] : &one_thread_opt);
2423 //try to just open decoders, in case this is enough to get parameters
2424 if(!has_codec_parameters(st->codec)){
2425 if (codec && !st->codec->codec)
2426 avcodec_open2(st->codec, codec, options ? &options[i]
2431 for (i=0; i<ic->nb_streams; i++) {
2432 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2438 if (ff_check_interrupt(&ic->interrupt_callback)){
2440 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2444 /* check if one codec still needs to be handled */
2445 for(i=0;i<ic->nb_streams;i++) {
2446 int fps_analyze_framecount = 20;
2448 st = ic->streams[i];
2449 if (!has_codec_parameters(st->codec))
2451 /* if the timebase is coarse (like the usual millisecond precision
2452 of mkv), we need to analyze more frames to reliably arrive at
2454 if (av_q2d(st->time_base) > 0.0005)
2455 fps_analyze_framecount *= 2;
2456 if (ic->fps_probe_size >= 0)
2457 fps_analyze_framecount = ic->fps_probe_size;
2458 /* variable fps and no guess at the real fps */
2459 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2460 && st->info->duration_count < fps_analyze_framecount
2461 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2463 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2465 if(st->first_dts == AV_NOPTS_VALUE && (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2468 if (i == ic->nb_streams) {
2469 /* NOTE: if the format has no header, then we need to read
2470 some packets to get most of the streams, so we cannot
2472 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2473 /* if we found the info for all the codecs, we can stop */
2475 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2480 /* we did not get all the codec info, but we read too much data */
2481 if (read_size >= ic->probesize) {
2483 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2487 /* NOTE: a new stream can be added there if no header in file
2488 (AVFMTCTX_NOHEADER) */
2489 ret = read_frame_internal(ic, &pkt1);
2490 if (ret == AVERROR(EAGAIN))
2498 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2499 if ((ret = av_dup_packet(pkt)) < 0)
2500 goto find_stream_info_err;
2502 read_size += pkt->size;
2504 st = ic->streams[pkt->stream_index];
2505 if (st->codec_info_nb_frames>1) {
2507 if (st->time_base.den > 0)
2508 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2509 if (st->avg_frame_rate.num > 0)
2510 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));
2512 if (t >= ic->max_analyze_duration) {
2513 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2516 st->info->codec_info_duration += pkt->duration;
2519 int64_t last = st->info->last_dts;
2521 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2522 double dts= pkt->dts * av_q2d(st->time_base);
2523 int64_t duration= pkt->dts - last;
2525 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2526 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2527 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2528 int framerate= get_std_framerate(i);
2529 double sdts= dts*framerate/(1001*12);
2531 int ticks= lrintf(sdts+j*0.5);
2532 double error= sdts - ticks + j*0.5;
2533 st->info->duration_error[j][0][i] += error;
2534 st->info->duration_error[j][1][i] += error*error;
2537 st->info->duration_count++;
2538 // ignore the first 4 values, they might have some random jitter
2539 if (st->info->duration_count > 3)
2540 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2542 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2543 st->info->last_dts = pkt->dts;
2545 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2546 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2548 st->codec->extradata_size= i;
2549 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2550 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2551 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2555 /* if still no information, we try to open the codec and to
2556 decompress the frame. We try to avoid that in most cases as
2557 it takes longer and uses more memory. For MPEG-4, we need to
2558 decompress for QuickTime.
2560 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2561 least one frame of codec data, this makes sure the codec initializes
2562 the channel configuration and does not only trust the values from the container.
2564 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2566 st->codec_info_nb_frames++;
2571 AVPacket empty_pkt = { 0 };
2573 av_init_packet(&empty_pkt);
2575 ret = -1; /* we could not have all the codec parameters before EOF */
2576 for(i=0;i<ic->nb_streams;i++) {
2577 st = ic->streams[i];
2579 /* flush the decoders */
2580 while ((err = try_decode_frame(st, &empty_pkt,
2581 (options && i < orig_nb_streams) ?
2582 &options[i] : NULL)) >= 0)
2583 if (has_codec_parameters(st->codec))
2586 if (!has_codec_parameters(st->codec)){
2588 avcodec_string(buf, sizeof(buf), st->codec, 0);
2589 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2596 // close codecs which were opened in try_decode_frame()
2597 for(i=0;i<ic->nb_streams;i++) {
2598 st = ic->streams[i];
2599 if(st->codec->codec)
2600 avcodec_close(st->codec);
2602 for(i=0;i<ic->nb_streams;i++) {
2603 st = ic->streams[i];
2604 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2605 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2606 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2607 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2608 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2609 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2610 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2611 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2612 st->codec->codec_tag= tag;
2615 // the check for tb_unreliable() is not completely correct, since this is not about handling
2616 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2617 // ipmovie.c produces.
2618 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)
2619 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);
2620 if (st->info->duration_count && !st->r_frame_rate.num
2621 && tb_unreliable(st->codec) /*&&
2622 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2623 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2625 double best_error= 0.01;
2627 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2630 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2632 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2635 int n= st->info->duration_count;
2636 double a= st->info->duration_error[k][0][j] / n;
2637 double error= st->info->duration_error[k][1][j]/n - a*a;
2639 if(error < best_error && best_error> 0.000000001){
2641 num = get_std_framerate(j);
2644 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2647 // do not increase frame rate by more than 1 % in order to match a standard rate.
2648 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2649 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2652 if (!st->r_frame_rate.num){
2653 if( st->codec->time_base.den * (int64_t)st->time_base.num
2654 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2655 st->r_frame_rate.num = st->codec->time_base.den;
2656 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2658 st->r_frame_rate.num = st->time_base.den;
2659 st->r_frame_rate.den = st->time_base.num;
2662 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2663 if(!st->codec->bits_per_coded_sample)
2664 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2665 // set stream disposition based on audio service type
2666 switch (st->codec->audio_service_type) {
2667 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2668 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2669 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2670 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2671 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2672 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2673 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2674 st->disposition = AV_DISPOSITION_COMMENT; break;
2675 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2676 st->disposition = AV_DISPOSITION_KARAOKE; break;
2681 estimate_timings(ic, old_offset);
2683 compute_chapters_end(ic);
2686 /* correct DTS for B-frame streams with no timestamps */
2687 for(i=0;i<ic->nb_streams;i++) {
2688 st = ic->streams[i];
2689 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2691 ppktl = &ic->packet_buffer;
2693 if(ppkt1->stream_index != i)
2695 if(ppkt1->pkt->dts < 0)
2697 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2699 ppkt1->pkt->dts -= delta;
2704 st->cur_dts -= delta;
2710 find_stream_info_err:
2711 for (i=0; i < ic->nb_streams; i++) {
2712 if (ic->streams[i]->codec)
2713 ic->streams[i]->codec->thread_count = 0;
2714 av_freep(&ic->streams[i]->info);
2719 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2723 for (i = 0; i < ic->nb_programs; i++) {
2724 if (ic->programs[i] == last) {
2728 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2729 if (ic->programs[i]->stream_index[j] == s)
2730 return ic->programs[i];
2736 int av_find_best_stream(AVFormatContext *ic,
2737 enum AVMediaType type,
2738 int wanted_stream_nb,
2740 AVCodec **decoder_ret,
2743 int i, nb_streams = ic->nb_streams;
2744 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2745 unsigned *program = NULL;
2746 AVCodec *decoder = NULL, *best_decoder = NULL;
2748 if (related_stream >= 0 && wanted_stream_nb < 0) {
2749 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2751 program = p->stream_index;
2752 nb_streams = p->nb_stream_indexes;
2755 for (i = 0; i < nb_streams; i++) {
2756 int real_stream_index = program ? program[i] : i;
2757 AVStream *st = ic->streams[real_stream_index];
2758 AVCodecContext *avctx = st->codec;
2759 if (avctx->codec_type != type)
2761 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2763 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2766 decoder = avcodec_find_decoder(st->codec->codec_id);
2769 ret = AVERROR_DECODER_NOT_FOUND;
2773 if (best_count >= st->codec_info_nb_frames)
2775 best_count = st->codec_info_nb_frames;
2776 ret = real_stream_index;
2777 best_decoder = decoder;
2778 if (program && i == nb_streams - 1 && ret < 0) {
2780 nb_streams = ic->nb_streams;
2781 i = 0; /* no related stream found, try again with everything */
2785 *decoder_ret = best_decoder;
2789 /*******************************************************/
2791 int av_read_play(AVFormatContext *s)
2793 if (s->iformat->read_play)
2794 return s->iformat->read_play(s);
2796 return avio_pause(s->pb, 0);
2797 return AVERROR(ENOSYS);
2800 int av_read_pause(AVFormatContext *s)
2802 if (s->iformat->read_pause)
2803 return s->iformat->read_pause(s);
2805 return avio_pause(s->pb, 1);
2806 return AVERROR(ENOSYS);
2809 #if FF_API_FORMAT_PARAMETERS
2810 void av_close_input_stream(AVFormatContext *s)
2812 flush_packet_queue(s);
2813 if (s->iformat->read_close)
2814 s->iformat->read_close(s);
2815 avformat_free_context(s);
2819 void avformat_free_context(AVFormatContext *s)
2825 if (s->iformat && s->iformat->priv_class && s->priv_data)
2826 av_opt_free(s->priv_data);
2828 for(i=0;i<s->nb_streams;i++) {
2829 /* free all data in a stream component */
2832 av_parser_close(st->parser);
2833 av_free_packet(&st->cur_pkt);
2835 av_dict_free(&st->metadata);
2836 av_freep(&st->index_entries);
2837 av_freep(&st->codec->extradata);
2838 av_freep(&st->codec->subtitle_header);
2839 av_freep(&st->codec);
2840 av_freep(&st->priv_data);
2841 av_freep(&st->info);
2844 for(i=s->nb_programs-1; i>=0; i--) {
2845 av_dict_free(&s->programs[i]->metadata);
2846 av_freep(&s->programs[i]->stream_index);
2847 av_freep(&s->programs[i]);
2849 av_freep(&s->programs);
2850 av_freep(&s->priv_data);
2851 while(s->nb_chapters--) {
2852 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2853 av_freep(&s->chapters[s->nb_chapters]);
2855 av_freep(&s->chapters);
2856 av_dict_free(&s->metadata);
2857 av_freep(&s->streams);
2861 #if FF_API_CLOSE_INPUT_FILE
2862 void av_close_input_file(AVFormatContext *s)
2864 avformat_close_input(&s);
2868 void avformat_close_input(AVFormatContext **ps)
2870 AVFormatContext *s = *ps;
2871 AVIOContext *pb = (s->iformat && (s->iformat->flags & AVFMT_NOFILE)) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2873 flush_packet_queue(s);
2874 if (s->iformat && (s->iformat->read_close))
2875 s->iformat->read_close(s);
2876 avformat_free_context(s);
2882 #if FF_API_NEW_STREAM
2883 AVStream *av_new_stream(AVFormatContext *s, int id)
2885 AVStream *st = avformat_new_stream(s, NULL);
2892 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2898 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2900 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2903 s->streams = streams;
2905 st = av_mallocz(sizeof(AVStream));
2908 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2913 st->codec = avcodec_alloc_context3(c);
2915 /* no default bitrate if decoding */
2916 st->codec->bit_rate = 0;
2918 st->index = s->nb_streams;
2919 st->start_time = AV_NOPTS_VALUE;
2920 st->duration = AV_NOPTS_VALUE;
2921 /* we set the current DTS to 0 so that formats without any timestamps
2922 but durations get some timestamps, formats with some unknown
2923 timestamps have their first few packets buffered and the
2924 timestamps corrected before they are returned to the user */
2926 st->first_dts = AV_NOPTS_VALUE;
2927 st->probe_packets = MAX_PROBE_PACKETS;
2929 /* default pts setting is MPEG-like */
2930 avpriv_set_pts_info(st, 33, 1, 90000);
2931 st->last_IP_pts = AV_NOPTS_VALUE;
2932 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2933 st->pts_buffer[i]= AV_NOPTS_VALUE;
2934 st->reference_dts = AV_NOPTS_VALUE;
2936 st->sample_aspect_ratio = (AVRational){0,1};
2938 s->streams[s->nb_streams++] = st;
2942 AVProgram *av_new_program(AVFormatContext *ac, int id)
2944 AVProgram *program=NULL;
2947 av_dlog(ac, "new_program: id=0x%04x\n", id);
2949 for(i=0; i<ac->nb_programs; i++)
2950 if(ac->programs[i]->id == id)
2951 program = ac->programs[i];
2954 program = av_mallocz(sizeof(AVProgram));
2957 dynarray_add(&ac->programs, &ac->nb_programs, program);
2958 program->discard = AVDISCARD_NONE;
2965 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2967 AVChapter *chapter = NULL;
2970 for(i=0; i<s->nb_chapters; i++)
2971 if(s->chapters[i]->id == id)
2972 chapter = s->chapters[i];
2975 chapter= av_mallocz(sizeof(AVChapter));
2978 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2980 av_dict_set(&chapter->metadata, "title", title, 0);
2982 chapter->time_base= time_base;
2983 chapter->start = start;
2989 /************************************************************/
2990 /* output media file */
2992 #if FF_API_FORMAT_PARAMETERS
2993 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2995 if (s->oformat->priv_data_size > 0) {
2996 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2998 return AVERROR(ENOMEM);
2999 if (s->oformat->priv_class) {
3000 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3001 av_opt_set_defaults(s->priv_data);
3004 s->priv_data = NULL;
3010 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
3011 const char *format, const char *filename)
3013 AVFormatContext *s = avformat_alloc_context();
3022 oformat = av_guess_format(format, NULL, NULL);
3024 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
3025 ret = AVERROR(EINVAL);
3029 oformat = av_guess_format(NULL, filename, NULL);
3031 ret = AVERROR(EINVAL);
3032 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
3039 s->oformat = oformat;
3040 if (s->oformat->priv_data_size > 0) {
3041 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3044 if (s->oformat->priv_class) {
3045 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3046 av_opt_set_defaults(s->priv_data);
3049 s->priv_data = NULL;
3052 av_strlcpy(s->filename, filename, sizeof(s->filename));
3056 av_log(s, AV_LOG_ERROR, "Out of memory\n");
3057 ret = AVERROR(ENOMEM);
3059 avformat_free_context(s);
3063 #if FF_API_ALLOC_OUTPUT_CONTEXT
3064 AVFormatContext *avformat_alloc_output_context(const char *format,
3065 AVOutputFormat *oformat, const char *filename)
3067 AVFormatContext *avctx;
3068 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
3069 return ret < 0 ? NULL : avctx;
3073 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3075 const AVCodecTag *avctag;
3077 enum CodecID id = CODEC_ID_NONE;
3078 unsigned int tag = 0;
3081 * Check that tag + id is in the table
3082 * If neither is in the table -> OK
3083 * If tag is in the table with another id -> FAIL
3084 * If id is in the table with another tag -> FAIL unless strict < normal
3086 for (n = 0; s->oformat->codec_tag[n]; n++) {
3087 avctag = s->oformat->codec_tag[n];
3088 while (avctag->id != CODEC_ID_NONE) {
3089 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3091 if (id == st->codec->codec_id)
3094 if (avctag->id == st->codec->codec_id)
3099 if (id != CODEC_ID_NONE)
3101 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3106 #if FF_API_FORMAT_PARAMETERS
3107 int av_write_header(AVFormatContext *s)
3109 return avformat_write_header(s, NULL);
3113 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3117 AVDictionary *tmp = NULL;
3120 av_dict_copy(&tmp, *options, 0);
3121 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3123 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3124 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3127 // some sanity checks
3128 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3129 av_log(s, AV_LOG_ERROR, "no streams\n");
3130 ret = AVERROR(EINVAL);
3134 for(i=0;i<s->nb_streams;i++) {
3137 switch (st->codec->codec_type) {
3138 case AVMEDIA_TYPE_AUDIO:
3139 if(st->codec->sample_rate<=0){
3140 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3141 ret = AVERROR(EINVAL);
3144 if(!st->codec->block_align)
3145 st->codec->block_align = st->codec->channels *
3146 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3148 case AVMEDIA_TYPE_VIDEO:
3149 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3150 av_log(s, AV_LOG_ERROR, "time base not set\n");
3151 ret = AVERROR(EINVAL);
3154 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3155 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3156 ret = AVERROR(EINVAL);
3159 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3160 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3162 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
3163 ret = AVERROR(EINVAL);
3169 if(s->oformat->codec_tag){
3170 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)){
3171 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3172 st->codec->codec_tag= 0;
3174 if(st->codec->codec_tag){
3175 if (!validate_codec_tag(s, st)) {
3177 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3178 av_log(s, AV_LOG_ERROR,
3179 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3180 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3181 ret = AVERROR_INVALIDDATA;
3185 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3188 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3189 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3190 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3193 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3194 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3195 if (!s->priv_data) {
3196 ret = AVERROR(ENOMEM);
3199 if (s->oformat->priv_class) {
3200 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3201 av_opt_set_defaults(s->priv_data);
3202 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3207 /* set muxer identification string */
3208 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3209 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3212 if(s->oformat->write_header){
3213 ret = s->oformat->write_header(s);
3218 /* init PTS generation */
3219 for(i=0;i<s->nb_streams;i++) {
3220 int64_t den = AV_NOPTS_VALUE;
3223 switch (st->codec->codec_type) {
3224 case AVMEDIA_TYPE_AUDIO:
3225 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3227 case AVMEDIA_TYPE_VIDEO:
3228 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3233 if (den != AV_NOPTS_VALUE) {
3235 ret = AVERROR_INVALIDDATA;
3238 frac_init(&st->pts, 0, 0, den);
3243 av_dict_free(options);
3252 //FIXME merge with compute_pkt_fields
3253 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3254 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3255 int num, den, frame_size, i;
3257 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3258 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3260 /* duration field */
3261 if (pkt->duration == 0) {
3262 compute_frame_duration(&num, &den, st, NULL, pkt);
3264 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3268 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3271 //XXX/FIXME this is a temporary hack until all encoders output pts
3272 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3274 // pkt->pts= st->cur_dts;
3275 pkt->pts= st->pts.val;
3278 //calculate dts from pts
3279 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3280 st->pts_buffer[0]= pkt->pts;
3281 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3282 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3283 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3284 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3286 pkt->dts= st->pts_buffer[0];
3289 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)){
3290 av_log(s, AV_LOG_ERROR,
3291 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3292 st->index, st->cur_dts, pkt->dts);
3293 return AVERROR(EINVAL);
3295 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3296 av_log(s, AV_LOG_ERROR, "pts < dts in stream %d\n", st->index);
3297 return AVERROR(EINVAL);
3300 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3301 st->cur_dts= pkt->dts;
3302 st->pts.val= pkt->dts;
3305 switch (st->codec->codec_type) {
3306 case AVMEDIA_TYPE_AUDIO:
3307 frame_size = get_audio_frame_size(st->codec, pkt->size);
3309 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3310 likely equal to the encoder delay, but it would be better if we
3311 had the real timestamps from the encoder */
3312 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3313 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3316 case AVMEDIA_TYPE_VIDEO:
3317 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3325 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3327 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3329 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3332 ret= s->oformat->write_packet(s, pkt);
3335 s->streams[pkt->stream_index]->nb_frames++;
3339 #define CHUNK_START 0x1000
3341 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3342 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3344 AVPacketList **next_point, *this_pktl;
3345 AVStream *st= s->streams[pkt->stream_index];
3346 int chunked= s->max_chunk_size || s->max_chunk_duration;
3348 this_pktl = av_mallocz(sizeof(AVPacketList));
3350 return AVERROR(ENOMEM);
3351 this_pktl->pkt= *pkt;
3352 pkt->destruct= NULL; // do not free original but only the copy
3353 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3355 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3356 next_point = &(st->last_in_packet_buffer->next);
3358 next_point = &s->packet_buffer;
3363 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3364 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3365 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3366 st->interleaver_chunk_size += pkt->size;
3367 st->interleaver_chunk_duration += pkt->duration;
3370 st->interleaver_chunk_size =
3371 st->interleaver_chunk_duration = 0;
3372 this_pktl->pkt.flags |= CHUNK_START;
3376 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3378 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3379 || !compare(s, &(*next_point)->pkt, pkt))){
3380 next_point= &(*next_point)->next;
3385 next_point = &(s->packet_buffer_end->next);
3388 assert(!*next_point);
3390 s->packet_buffer_end= this_pktl;
3393 this_pktl->next= *next_point;
3395 s->streams[pkt->stream_index]->last_in_packet_buffer=
3396 *next_point= this_pktl;
3400 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3402 AVStream *st = s->streams[ pkt ->stream_index];
3403 AVStream *st2= s->streams[ next->stream_index];
3404 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3406 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3407 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);
3408 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);
3410 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
3411 -( 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;
3414 comp= (ts>ts2) - (ts<ts2);
3418 return pkt->stream_index < next->stream_index;
3422 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
3424 int stream_count=0, noninterleaved_count=0;
3425 int64_t delta_dts_max = 0;
3429 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3434 for(i=0; i < s->nb_streams; i++) {
3435 if (s->streams[i]->last_in_packet_buffer) {
3437 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3438 ++noninterleaved_count;
3442 if (s->nb_streams == stream_count) {
3445 for(i=0; i < s->nb_streams; i++) {
3446 if (s->streams[i]->last_in_packet_buffer) {
3448 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3449 s->streams[i]->time_base,
3451 av_rescale_q(s->packet_buffer->pkt.dts,
3452 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3454 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3457 if(s->nb_streams == stream_count+noninterleaved_count &&
3458 delta_dts_max > 20*AV_TIME_BASE) {
3459 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3463 if(stream_count && flush){
3464 pktl= s->packet_buffer;
3467 s->packet_buffer= pktl->next;
3468 if(!s->packet_buffer)
3469 s->packet_buffer_end= NULL;
3471 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3472 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3476 av_init_packet(out);
3482 * Interleave an AVPacket correctly so it can be muxed.
3483 * @param out the interleaved packet will be output here
3484 * @param in the input packet
3485 * @param flush 1 if no further packets are available as input and all
3486 * remaining packets should be output
3487 * @return 1 if a packet was output, 0 if no packet could be output,
3488 * < 0 if an error occurred
3490 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3491 if(s->oformat->interleave_packet)
3492 return s->oformat->interleave_packet(s, out, in, flush);
3494 return av_interleave_packet_per_dts(s, out, in, flush);
3497 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3498 AVStream *st= s->streams[ pkt->stream_index];
3501 //FIXME/XXX/HACK drop zero sized packets
3502 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3505 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3506 pkt->size, pkt->dts, pkt->pts);
3507 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3510 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3511 return AVERROR(EINVAL);
3515 int ret= interleave_packet(s, &opkt, pkt, 0);
3516 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3519 ret= s->oformat->write_packet(s, &opkt);
3521 s->streams[opkt.stream_index]->nb_frames++;
3523 av_free_packet(&opkt);
3528 if(s->pb && s->pb->error)
3529 return s->pb->error;
3533 int av_write_trailer(AVFormatContext *s)
3539 ret= interleave_packet(s, &pkt, NULL, 1);
3540 if(ret<0) //FIXME cleanup needed for ret<0 ?
3545 ret= s->oformat->write_packet(s, &pkt);
3547 s->streams[pkt.stream_index]->nb_frames++;
3549 av_free_packet(&pkt);
3553 if(s->pb && s->pb->error)
3557 if(s->oformat->write_trailer)
3558 ret = s->oformat->write_trailer(s);
3561 ret = s->pb ? s->pb->error : 0;
3562 for(i=0;i<s->nb_streams;i++) {
3563 av_freep(&s->streams[i]->priv_data);
3564 av_freep(&s->streams[i]->index_entries);
3566 if (s->oformat->priv_class)
3567 av_opt_free(s->priv_data);
3568 av_freep(&s->priv_data);
3572 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3573 int64_t *dts, int64_t *wall)
3575 if (!s->oformat || !s->oformat->get_output_timestamp)
3576 return AVERROR(ENOSYS);
3577 s->oformat->get_output_timestamp(s, stream, dts, wall);
3581 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3584 AVProgram *program=NULL;
3587 if (idx >= ac->nb_streams) {
3588 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3592 for(i=0; i<ac->nb_programs; i++){
3593 if(ac->programs[i]->id != progid)
3595 program = ac->programs[i];
3596 for(j=0; j<program->nb_stream_indexes; j++)
3597 if(program->stream_index[j] == idx)
3600 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3603 program->stream_index = tmp;
3604 program->stream_index[program->nb_stream_indexes++] = idx;
3609 static void print_fps(double d, const char *postfix){
3610 uint64_t v= lrintf(d*100);
3611 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3612 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3613 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3616 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3618 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3619 AVDictionaryEntry *tag=NULL;
3621 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3622 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3623 if(strcmp("language", tag->key)){
3626 av_strlcpy(tmp, tag->value, sizeof(tmp));
3627 for(i=0; i<strlen(tmp); i++) if(tmp[i]==0xd) tmp[i]=' ';
3628 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tmp);
3634 /* "user interface" functions */
3635 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3638 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3639 AVStream *st = ic->streams[i];
3640 int g = av_gcd(st->time_base.num, st->time_base.den);
3641 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3642 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3643 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3644 /* the pid is an important information, so we display it */
3645 /* XXX: add a generic system */
3646 if (flags & AVFMT_SHOW_IDS)
3647 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3649 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3650 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3651 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3652 if (st->sample_aspect_ratio.num && // default
3653 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3654 AVRational display_aspect_ratio;
3655 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3656 st->codec->width*st->sample_aspect_ratio.num,
3657 st->codec->height*st->sample_aspect_ratio.den,
3659 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3660 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3661 display_aspect_ratio.num, display_aspect_ratio.den);
3663 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3664 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3665 print_fps(av_q2d(st->avg_frame_rate), "fps");
3666 if(st->r_frame_rate.den && st->r_frame_rate.num)
3667 print_fps(av_q2d(st->r_frame_rate), "tbr");
3668 if(st->time_base.den && st->time_base.num)
3669 print_fps(1/av_q2d(st->time_base), "tbn");
3670 if(st->codec->time_base.den && st->codec->time_base.num)
3671 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3673 if (st->disposition & AV_DISPOSITION_DEFAULT)
3674 av_log(NULL, AV_LOG_INFO, " (default)");
3675 if (st->disposition & AV_DISPOSITION_DUB)
3676 av_log(NULL, AV_LOG_INFO, " (dub)");
3677 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3678 av_log(NULL, AV_LOG_INFO, " (original)");
3679 if (st->disposition & AV_DISPOSITION_COMMENT)
3680 av_log(NULL, AV_LOG_INFO, " (comment)");
3681 if (st->disposition & AV_DISPOSITION_LYRICS)
3682 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3683 if (st->disposition & AV_DISPOSITION_KARAOKE)
3684 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3685 if (st->disposition & AV_DISPOSITION_FORCED)
3686 av_log(NULL, AV_LOG_INFO, " (forced)");
3687 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3688 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3689 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3690 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3691 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3692 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3693 av_log(NULL, AV_LOG_INFO, "\n");
3694 dump_metadata(NULL, st->metadata, " ");
3697 #if FF_API_DUMP_FORMAT
3698 void dump_format(AVFormatContext *ic,
3703 av_dump_format(ic, index, url, is_output);
3707 void av_dump_format(AVFormatContext *ic,
3713 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3714 if (ic->nb_streams && !printed)
3717 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3718 is_output ? "Output" : "Input",
3720 is_output ? ic->oformat->name : ic->iformat->name,
3721 is_output ? "to" : "from", url);
3722 dump_metadata(NULL, ic->metadata, " ");
3724 av_log(NULL, AV_LOG_INFO, " Duration: ");
3725 if (ic->duration != AV_NOPTS_VALUE) {
3726 int hours, mins, secs, us;
3727 secs = ic->duration / AV_TIME_BASE;
3728 us = ic->duration % AV_TIME_BASE;
3733 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3734 (100 * us) / AV_TIME_BASE);
3736 av_log(NULL, AV_LOG_INFO, "N/A");
3738 if (ic->start_time != AV_NOPTS_VALUE) {
3740 av_log(NULL, AV_LOG_INFO, ", start: ");
3741 secs = ic->start_time / AV_TIME_BASE;
3742 us = abs(ic->start_time % AV_TIME_BASE);
3743 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3744 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3746 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3748 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3750 av_log(NULL, AV_LOG_INFO, "N/A");
3752 av_log(NULL, AV_LOG_INFO, "\n");
3754 for (i = 0; i < ic->nb_chapters; i++) {
3755 AVChapter *ch = ic->chapters[i];
3756 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3757 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3758 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3760 dump_metadata(NULL, ch->metadata, " ");
3762 if(ic->nb_programs) {
3763 int j, k, total = 0;
3764 for(j=0; j<ic->nb_programs; j++) {
3765 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3767 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3768 name ? name->value : "");
3769 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3770 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3771 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3772 printed[ic->programs[j]->stream_index[k]] = 1;
3774 total += ic->programs[j]->nb_stream_indexes;
3776 if (total < ic->nb_streams)
3777 av_log(NULL, AV_LOG_INFO, " No Program\n");
3779 for(i=0;i<ic->nb_streams;i++)
3781 dump_stream_format(ic, i, index, is_output);
3786 int64_t av_gettime(void)
3789 gettimeofday(&tv,NULL);
3790 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3793 uint64_t ff_ntp_time(void)
3795 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3798 #if FF_API_PARSE_DATE
3799 #include "libavutil/parseutils.h"
3801 int64_t parse_date(const char *timestr, int duration)
3804 av_parse_time(&timeval, timestr, duration);
3809 #if FF_API_FIND_INFO_TAG
3810 #include "libavutil/parseutils.h"
3812 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3814 return av_find_info_tag(arg, arg_size, tag1, info);
3818 int av_get_frame_filename(char *buf, int buf_size,
3819 const char *path, int number)
3822 char *q, buf1[20], c;
3823 int nd, len, percentd_found;
3835 while (isdigit(*p)) {
3836 nd = nd * 10 + *p++ - '0';
3839 } while (isdigit(c));
3848 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3850 if ((q - buf + len) > buf_size - 1)
3852 memcpy(q, buf1, len);
3860 if ((q - buf) < buf_size - 1)
3864 if (!percentd_found)
3873 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3877 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3879 for(i=0;i<size;i+=16) {
3886 PRINT(" %02x", buf[i+j]);
3891 for(j=0;j<len;j++) {
3893 if (c < ' ' || c > '~')
3902 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3904 hex_dump_internal(NULL, f, 0, buf, size);
3907 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3909 hex_dump_internal(avcl, NULL, level, buf, size);
3912 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3915 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3916 PRINT("stream #%d:\n", pkt->stream_index);
3917 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3918 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3919 /* DTS is _always_ valid after av_read_frame() */
3921 if (pkt->dts == AV_NOPTS_VALUE)
3924 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3925 /* PTS may not be known if B-frames are present. */
3927 if (pkt->pts == AV_NOPTS_VALUE)
3930 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3932 PRINT(" size=%d\n", pkt->size);
3935 av_hex_dump(f, pkt->data, pkt->size);
3939 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3941 AVRational tb = { 1, AV_TIME_BASE };
3942 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3946 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3948 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3952 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3954 AVRational tb = { 1, AV_TIME_BASE };
3955 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3959 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3962 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3965 void av_url_split(char *proto, int proto_size,
3966 char *authorization, int authorization_size,
3967 char *hostname, int hostname_size,
3969 char *path, int path_size,
3972 const char *p, *ls, *at, *col, *brk;
3974 if (port_ptr) *port_ptr = -1;
3975 if (proto_size > 0) proto[0] = 0;
3976 if (authorization_size > 0) authorization[0] = 0;
3977 if (hostname_size > 0) hostname[0] = 0;
3978 if (path_size > 0) path[0] = 0;
3980 /* parse protocol */
3981 if ((p = strchr(url, ':'))) {
3982 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3987 /* no protocol means plain filename */
3988 av_strlcpy(path, url, path_size);
3992 /* separate path from hostname */
3993 ls = strchr(p, '/');
3995 ls = strchr(p, '?');
3997 av_strlcpy(path, ls, path_size);
3999 ls = &p[strlen(p)]; // XXX
4001 /* the rest is hostname, use that to parse auth/port */
4003 /* authorization (user[:pass]@hostname) */
4004 if ((at = strchr(p, '@')) && at < ls) {
4005 av_strlcpy(authorization, p,
4006 FFMIN(authorization_size, at + 1 - p));
4007 p = at + 1; /* skip '@' */
4010 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4012 av_strlcpy(hostname, p + 1,
4013 FFMIN(hostname_size, brk - p));
4014 if (brk[1] == ':' && port_ptr)
4015 *port_ptr = atoi(brk + 2);
4016 } else if ((col = strchr(p, ':')) && col < ls) {
4017 av_strlcpy(hostname, p,
4018 FFMIN(col + 1 - p, hostname_size));
4019 if (port_ptr) *port_ptr = atoi(col + 1);
4021 av_strlcpy(hostname, p,
4022 FFMIN(ls + 1 - p, hostname_size));
4026 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4029 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4032 'C', 'D', 'E', 'F' };
4033 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4036 'c', 'd', 'e', 'f' };
4037 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4039 for(i = 0; i < s; i++) {
4040 buff[i * 2] = hex_table[src[i] >> 4];
4041 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4047 int ff_hex_to_data(uint8_t *data, const char *p)
4054 p += strspn(p, SPACE_CHARS);
4057 c = toupper((unsigned char) *p++);
4058 if (c >= '0' && c <= '9')
4060 else if (c >= 'A' && c <= 'F')
4075 #if FF_API_SET_PTS_INFO
4076 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4077 unsigned int pts_num, unsigned int pts_den)
4079 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4083 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4084 unsigned int pts_num, unsigned int pts_den)
4087 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4088 if(new_tb.num != pts_num)
4089 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4091 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4093 if(new_tb.num <= 0 || new_tb.den <= 0) {
4094 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
4097 s->time_base = new_tb;
4098 s->pts_wrap_bits = pts_wrap_bits;
4101 int ff_url_join(char *str, int size, const char *proto,
4102 const char *authorization, const char *hostname,
4103 int port, const char *fmt, ...)
4106 struct addrinfo hints, *ai;
4111 av_strlcatf(str, size, "%s://", proto);
4112 if (authorization && authorization[0])
4113 av_strlcatf(str, size, "%s@", authorization);
4114 #if CONFIG_NETWORK && defined(AF_INET6)
4115 /* Determine if hostname is a numerical IPv6 address,
4116 * properly escape it within [] in that case. */
4117 memset(&hints, 0, sizeof(hints));
4118 hints.ai_flags = AI_NUMERICHOST;
4119 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4120 if (ai->ai_family == AF_INET6) {
4121 av_strlcat(str, "[", size);
4122 av_strlcat(str, hostname, size);
4123 av_strlcat(str, "]", size);
4125 av_strlcat(str, hostname, size);
4130 /* Not an IPv6 address, just output the plain string. */
4131 av_strlcat(str, hostname, size);
4134 av_strlcatf(str, size, ":%d", port);
4137 int len = strlen(str);
4140 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4146 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4147 AVFormatContext *src)
4152 local_pkt.stream_index = dst_stream;
4153 if (pkt->pts != AV_NOPTS_VALUE)
4154 local_pkt.pts = av_rescale_q(pkt->pts,
4155 src->streams[pkt->stream_index]->time_base,
4156 dst->streams[dst_stream]->time_base);
4157 if (pkt->dts != AV_NOPTS_VALUE)
4158 local_pkt.dts = av_rescale_q(pkt->dts,
4159 src->streams[pkt->stream_index]->time_base,
4160 dst->streams[dst_stream]->time_base);
4161 return av_write_frame(dst, &local_pkt);
4164 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4167 const char *ptr = str;
4169 /* Parse key=value pairs. */
4172 char *dest = NULL, *dest_end;
4173 int key_len, dest_len = 0;
4175 /* Skip whitespace and potential commas. */
4176 while (*ptr && (isspace(*ptr) || *ptr == ','))
4183 if (!(ptr = strchr(key, '=')))
4186 key_len = ptr - key;
4188 callback_get_buf(context, key, key_len, &dest, &dest_len);
4189 dest_end = dest + dest_len - 1;
4193 while (*ptr && *ptr != '\"') {
4197 if (dest && dest < dest_end)
4201 if (dest && dest < dest_end)
4209 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4210 if (dest && dest < dest_end)
4218 int ff_find_stream_index(AVFormatContext *s, int id)
4221 for (i = 0; i < s->nb_streams; i++) {
4222 if (s->streams[i]->id == id)
4228 void ff_make_absolute_url(char *buf, int size, const char *base,
4232 /* Absolute path, relative to the current server */
4233 if (base && strstr(base, "://") && rel[0] == '/') {
4235 av_strlcpy(buf, base, size);
4236 sep = strstr(buf, "://");
4239 sep = strchr(sep, '/');
4243 av_strlcat(buf, rel, size);
4246 /* If rel actually is an absolute url, just copy it */
4247 if (!base || strstr(rel, "://") || rel[0] == '/') {
4248 av_strlcpy(buf, rel, size);
4252 av_strlcpy(buf, base, size);
4253 /* Remove the file name from the base url */
4254 sep = strrchr(buf, '/');
4259 while (av_strstart(rel, "../", NULL) && sep) {
4260 /* Remove the path delimiter at the end */
4262 sep = strrchr(buf, '/');
4263 /* If the next directory name to pop off is "..", break here */
4264 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4265 /* Readd the slash we just removed */
4266 av_strlcat(buf, "/", size);
4269 /* Cut off the directory name */
4276 av_strlcat(buf, rel, size);
4279 int64_t ff_iso8601_to_unix_time(const char *datestr)
4282 struct tm time1 = {0}, time2 = {0};
4284 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4285 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4287 return av_timegm(&time2);
4289 return av_timegm(&time1);
4291 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4292 "the date string.\n");
4297 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4300 if (ofmt->query_codec)
4301 return ofmt->query_codec(codec_id, std_compliance);
4302 else if (ofmt->codec_tag)
4303 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4304 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4305 codec_id == ofmt->subtitle_codec)
4308 return AVERROR_PATCHWELCOME;
4311 int avformat_network_init(void)
4315 ff_network_inited_globally = 1;
4316 if ((ret = ff_network_init()) < 0)
4323 int avformat_network_deinit(void)
4332 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4333 uint64_t channel_layout, int32_t sample_rate,
4334 int32_t width, int32_t height)
4340 return AVERROR(EINVAL);
4343 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4345 if (channel_layout) {
4347 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4351 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4353 if (width || height) {
4355 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4357 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4359 return AVERROR(ENOMEM);
4360 bytestream_put_le32(&data, flags);
4362 bytestream_put_le32(&data, channels);
4364 bytestream_put_le64(&data, channel_layout);
4366 bytestream_put_le32(&data, sample_rate);
4367 if (width || height) {
4368 bytestream_put_le32(&data, width);
4369 bytestream_put_le32(&data, height);