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 "libavutil/opt.h"
30 #include "libavutil/dict.h"
31 #include "libavutil/pixdesc.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/mathematics.h"
37 #include "audiointerleave.h"
52 * various utility functions for use within FFmpeg
55 unsigned avformat_version(void)
57 return LIBAVFORMAT_VERSION_INT;
60 const char *avformat_configuration(void)
62 return FFMPEG_CONFIGURATION;
65 const char *avformat_license(void)
67 #define LICENSE_PREFIX "libavformat license: "
68 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
71 /* fraction handling */
74 * f = val + (num / den) + 0.5.
76 * 'num' is normalized so that it is such as 0 <= num < den.
78 * @param f fractional number
79 * @param val integer value
80 * @param num must be >= 0
81 * @param den must be >= 1
83 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
96 * Fractional addition to f: f = f + (incr / f->den).
98 * @param f fractional number
99 * @param incr increment, can be positive or negative
101 static void frac_add(AVFrac *f, int64_t incr)
114 } else if (num >= den) {
121 /** head of registered input format linked list */
122 static AVInputFormat *first_iformat = NULL;
123 /** head of registered output format linked list */
124 static AVOutputFormat *first_oformat = NULL;
126 AVInputFormat *av_iformat_next(AVInputFormat *f)
128 if(f) return f->next;
129 else return first_iformat;
132 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
134 if(f) return f->next;
135 else return first_oformat;
138 void av_register_input_format(AVInputFormat *format)
142 while (*p != NULL) p = &(*p)->next;
147 void av_register_output_format(AVOutputFormat *format)
151 while (*p != NULL) p = &(*p)->next;
156 int av_match_ext(const char *filename, const char *extensions)
164 ext = strrchr(filename, '.');
170 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
173 if (!strcasecmp(ext1, ext))
183 static int match_format(const char *name, const char *names)
191 namelen = strlen(name);
192 while ((p = strchr(names, ','))) {
193 len = FFMAX(p - names, namelen);
194 if (!strncasecmp(name, names, len))
198 return !strcasecmp(name, names);
201 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
202 const char *mime_type)
204 AVOutputFormat *fmt = NULL, *fmt_found;
205 int score_max, score;
207 /* specific test for image sequences */
208 #if CONFIG_IMAGE2_MUXER
209 if (!short_name && filename &&
210 av_filename_number_test(filename) &&
211 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
212 return av_guess_format("image2", NULL, NULL);
215 /* Find the proper file type. */
218 while ((fmt = av_oformat_next(fmt))) {
220 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
222 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
224 if (filename && fmt->extensions &&
225 av_match_ext(filename, fmt->extensions)) {
228 if (score > score_max) {
236 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
237 const char *filename, const char *mime_type, enum AVMediaType type){
238 if(type == AVMEDIA_TYPE_VIDEO){
239 enum CodecID codec_id= CODEC_ID_NONE;
241 #if CONFIG_IMAGE2_MUXER
242 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
243 codec_id= ff_guess_image2_codec(filename);
246 if(codec_id == CODEC_ID_NONE)
247 codec_id= fmt->video_codec;
249 }else if(type == AVMEDIA_TYPE_AUDIO)
250 return fmt->audio_codec;
251 else if (type == AVMEDIA_TYPE_SUBTITLE)
252 return fmt->subtitle_codec;
254 return CODEC_ID_NONE;
257 AVInputFormat *av_find_input_format(const char *short_name)
259 AVInputFormat *fmt = NULL;
260 while ((fmt = av_iformat_next(fmt))) {
261 if (match_format(short_name, fmt->name))
268 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
270 int ret= av_new_packet(pkt, size);
275 pkt->pos= avio_tell(s);
277 ret= avio_read(s, pkt->data, size);
281 av_shrink_packet(pkt, ret);
286 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
291 return av_get_packet(s, pkt, size);
292 old_size = pkt->size;
293 ret = av_grow_packet(pkt, size);
296 ret = avio_read(s, pkt->data + old_size, size);
297 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
302 int av_filename_number_test(const char *filename)
305 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
308 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
310 AVProbeData lpd = *pd;
311 AVInputFormat *fmt1 = NULL, *fmt;
312 int score, score_max=0;
314 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
315 int id3len = ff_id3v2_tag_len(lpd.buf);
316 if (lpd.buf_size > id3len + 16) {
318 lpd.buf_size -= id3len;
323 while ((fmt1 = av_iformat_next(fmt1))) {
324 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
327 if (fmt1->read_probe) {
328 score = fmt1->read_probe(&lpd);
329 if(!score && fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
331 } else if (fmt1->extensions) {
332 if (av_match_ext(lpd.filename, fmt1->extensions)) {
336 if (score > score_max) {
339 }else if (score == score_max)
342 *score_ret= score_max;
346 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
349 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
350 if(score_ret > *score_max){
351 *score_max= score_ret;
357 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
359 return av_probe_input_format2(pd, is_opened, &score);
362 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
364 static const struct {
365 const char *name; enum CodecID id; enum AVMediaType type;
367 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
368 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
369 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
370 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
371 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
372 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
373 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
374 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
375 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
379 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
383 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
384 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
385 for (i = 0; fmt_id_type[i].name; i++) {
386 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
387 st->codec->codec_id = fmt_id_type[i].id;
388 st->codec->codec_type = fmt_id_type[i].type;
396 /************************************************************/
397 /* input media file */
399 #if FF_API_FORMAT_PARAMETERS
400 static AVDictionary *convert_format_parameters(AVFormatParameters *ap)
403 AVDictionary *opts = NULL;
408 if (ap->time_base.num) {
409 snprintf(buf, sizeof(buf), "%d/%d", ap->time_base.den, ap->time_base.num);
410 av_dict_set(&opts, "framerate", buf, 0);
412 if (ap->sample_rate) {
413 snprintf(buf, sizeof(buf), "%d", ap->sample_rate);
414 av_dict_set(&opts, "sample_rate", buf, 0);
417 snprintf(buf, sizeof(buf), "%d", ap->channels);
418 av_dict_set(&opts, "channels", buf, 0);
420 if (ap->width || ap->height) {
421 snprintf(buf, sizeof(buf), "%dx%d", ap->width, ap->height);
422 av_dict_set(&opts, "video_size", buf, 0);
424 if (ap->pix_fmt != PIX_FMT_NONE) {
425 av_dict_set(&opts, "pixel_format", av_get_pix_fmt_name(ap->pix_fmt), 0);
428 snprintf(buf, sizeof(buf), "%d", ap->channel);
429 av_dict_set(&opts, "channel", buf, 0);
432 av_dict_set(&opts, "standard", ap->standard, 0);
434 if (ap->mpeg2ts_compute_pcr) {
435 av_dict_set(&opts, "mpeg2ts_compute_pcr", "1", 0);
437 if (ap->initial_pause) {
438 av_dict_set(&opts, "initial_pause", "1", 0);
444 * Open a media file from an IO stream. 'fmt' must be specified.
446 int av_open_input_stream(AVFormatContext **ic_ptr,
447 AVIOContext *pb, const char *filename,
448 AVInputFormat *fmt, AVFormatParameters *ap)
453 AVFormatParameters default_ap;
457 memset(ap, 0, sizeof(default_ap));
459 opts = convert_format_parameters(ap);
461 if(!ap->prealloced_context)
462 *ic_ptr = ic = avformat_alloc_context();
466 err = AVERROR(ENOMEM);
469 if (pb && fmt && fmt->flags & AVFMT_NOFILE)
470 av_log(ic, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
471 "will be ignored with AVFMT_NOFILE format.\n");
475 if ((err = avformat_open_input(&ic, filename, fmt, &opts)) < 0)
477 ic->pb = ic->pb ? ic->pb : pb; // don't leak custom pb if it wasn't set above
486 int av_demuxer_open(AVFormatContext *ic, AVFormatParameters *ap){
489 if (ic->iformat->read_header) {
490 err = ic->iformat->read_header(ic, ap);
495 if (ic->pb && !ic->data_offset)
496 ic->data_offset = avio_tell(ic->pb);
502 /** size of probe buffer, for guessing file type from file contents */
503 #define PROBE_BUF_MIN 2048
504 #define PROBE_BUF_MAX (1<<20)
506 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
507 const char *filename, void *logctx,
508 unsigned int offset, unsigned int max_probe_size)
510 AVProbeData pd = { filename ? filename : "", NULL, -offset };
511 unsigned char *buf = NULL;
512 int ret = 0, probe_size;
514 if (!max_probe_size) {
515 max_probe_size = PROBE_BUF_MAX;
516 } else if (max_probe_size > PROBE_BUF_MAX) {
517 max_probe_size = PROBE_BUF_MAX;
518 } else if (max_probe_size < PROBE_BUF_MIN) {
519 return AVERROR(EINVAL);
522 if (offset >= max_probe_size) {
523 return AVERROR(EINVAL);
526 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
527 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
528 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
529 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
532 if (probe_size < offset) {
536 /* read probe data */
537 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
540 return AVERROR(ENOMEM);
543 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
544 /* fail if error was not end of file, otherwise, lower score */
545 if (ret != AVERROR_EOF) {
550 ret = 0; /* error was end of file, nothing read */
553 pd.buf = &buf[offset];
555 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
557 /* guess file format */
558 *fmt = av_probe_input_format2(&pd, 1, &score);
560 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
561 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
563 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
569 return AVERROR_INVALIDDATA;
572 /* rewind. reuse probe buffer to avoid seeking */
573 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
579 #if FF_API_FORMAT_PARAMETERS
580 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
583 AVFormatParameters *ap)
586 AVDictionary *opts = convert_format_parameters(ap);
588 if (!ap || !ap->prealloced_context)
591 err = avformat_open_input(ic_ptr, filename, fmt, &opts);
598 /* open input file and probe the format if necessary */
599 static int init_input(AVFormatContext *s, const char *filename)
602 AVProbeData pd = {filename, NULL, 0};
605 s->flags |= AVFMT_FLAG_CUSTOM_IO;
607 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
608 else if (s->iformat->flags & AVFMT_NOFILE)
609 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
610 "will be ignored with AVFMT_NOFILE format.\n");
614 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
615 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
618 if ((ret = avio_open(&s->pb, filename, AVIO_FLAG_READ)) < 0)
622 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
625 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
627 AVFormatContext *s = *ps;
629 AVFormatParameters ap = { { 0 } };
630 AVDictionary *tmp = NULL;
632 if (!s && !(s = avformat_alloc_context()))
633 return AVERROR(ENOMEM);
638 av_dict_copy(&tmp, *options, 0);
640 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
643 if ((ret = init_input(s, filename)) < 0)
646 /* check filename in case an image number is expected */
647 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
648 if (!av_filename_number_test(filename)) {
649 ret = AVERROR(EINVAL);
654 s->duration = s->start_time = AV_NOPTS_VALUE;
655 av_strlcpy(s->filename, filename, sizeof(s->filename));
657 /* allocate private data */
658 if (s->iformat->priv_data_size > 0) {
659 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
660 ret = AVERROR(ENOMEM);
663 if (s->iformat->priv_class) {
664 *(const AVClass**)s->priv_data = s->iformat->priv_class;
665 av_opt_set_defaults(s->priv_data);
666 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
671 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
673 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC);
675 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
676 if ((ret = s->iformat->read_header(s, &ap)) < 0)
679 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
680 s->data_offset = avio_tell(s->pb);
682 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
685 av_dict_free(options);
693 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
695 avformat_free_context(s);
700 /*******************************************************/
702 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
703 AVPacketList **plast_pktl){
704 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
709 (*plast_pktl)->next = pktl;
711 *packet_buffer = pktl;
713 /* add the packet in the buffered packet list */
719 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
725 AVPacketList *pktl = s->raw_packet_buffer;
729 if(s->streams[pkt->stream_index]->request_probe <= 0){
730 s->raw_packet_buffer = pktl->next;
731 s->raw_packet_buffer_remaining_size += pkt->size;
738 ret= s->iformat->read_packet(s, pkt);
740 if (!pktl || ret == AVERROR(EAGAIN))
742 for (i = 0; i < s->nb_streams; i++)
743 if(s->streams[i]->request_probe > 0)
744 s->streams[i]->request_probe = -1;
748 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
749 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
750 av_log(s, AV_LOG_WARNING,
751 "Dropped corrupted packet (stream = %d)\n",
756 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
757 av_packet_merge_side_data(pkt);
759 st= s->streams[pkt->stream_index];
761 switch(st->codec->codec_type){
762 case AVMEDIA_TYPE_VIDEO:
763 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
765 case AVMEDIA_TYPE_AUDIO:
766 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
768 case AVMEDIA_TYPE_SUBTITLE:
769 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
773 if(!pktl && st->request_probe <= 0)
776 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
777 s->raw_packet_buffer_remaining_size -= pkt->size;
779 if(st->request_probe>0){
780 AVProbeData *pd = &st->probe_data;
782 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
785 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
786 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
787 pd->buf_size += pkt->size;
788 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
790 end= s->raw_packet_buffer_remaining_size <= 0
791 || st->probe_packets<=0;
793 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
794 int score= set_codec_from_probe_data(s, st, pd);
795 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
799 st->request_probe= -1;
800 if(st->codec->codec_id != CODEC_ID_NONE){
801 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
803 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
810 /**********************************************************/
813 * Get the number of samples of an audio frame. Return -1 on error.
815 static int get_audio_frame_size(AVCodecContext *enc, int size)
819 if(enc->codec_id == CODEC_ID_VORBIS)
822 if (enc->frame_size <= 1) {
823 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
825 if (bits_per_sample) {
826 if (enc->channels == 0)
828 frame_size = (size << 3) / (bits_per_sample * enc->channels);
830 /* used for example by ADPCM codecs */
831 if (enc->bit_rate == 0)
833 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
836 frame_size = enc->frame_size;
843 * Return the frame duration in seconds. Return 0 if not available.
845 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
846 AVCodecParserContext *pc, AVPacket *pkt)
852 switch(st->codec->codec_type) {
853 case AVMEDIA_TYPE_VIDEO:
854 if(st->time_base.num*1000LL > st->time_base.den){
855 *pnum = st->time_base.num;
856 *pden = st->time_base.den;
857 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
858 *pnum = st->codec->time_base.num;
859 *pden = st->codec->time_base.den;
860 if (pc && pc->repeat_pict) {
861 *pnum = (*pnum) * (1 + pc->repeat_pict);
863 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
864 //Thus if we have no parser in such case leave duration undefined.
865 if(st->codec->ticks_per_frame>1 && !pc){
870 case AVMEDIA_TYPE_AUDIO:
871 frame_size = get_audio_frame_size(st->codec, pkt->size);
872 if (frame_size <= 0 || st->codec->sample_rate <= 0)
875 *pden = st->codec->sample_rate;
882 static int is_intra_only(AVCodecContext *enc){
883 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
885 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
886 switch(enc->codec_id){
888 case CODEC_ID_MJPEGB:
890 case CODEC_ID_RAWVIDEO:
891 case CODEC_ID_DVVIDEO:
892 case CODEC_ID_HUFFYUV:
893 case CODEC_ID_FFVHUFF:
898 case CODEC_ID_JPEG2000:
906 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
907 int64_t dts, int64_t pts)
909 AVStream *st= s->streams[stream_index];
910 AVPacketList *pktl= s->packet_buffer;
912 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
915 st->first_dts= dts - st->cur_dts;
918 for(; pktl; pktl= pktl->next){
919 if(pktl->pkt.stream_index != stream_index)
921 //FIXME think more about this check
922 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
923 pktl->pkt.pts += st->first_dts;
925 if(pktl->pkt.dts != AV_NOPTS_VALUE)
926 pktl->pkt.dts += st->first_dts;
928 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
929 st->start_time= pktl->pkt.pts;
931 if (st->start_time == AV_NOPTS_VALUE)
932 st->start_time = pts;
935 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
937 AVPacketList *pktl= s->packet_buffer;
940 if(st->first_dts != AV_NOPTS_VALUE){
941 cur_dts= st->first_dts;
942 for(; pktl; pktl= pktl->next){
943 if(pktl->pkt.stream_index == pkt->stream_index){
944 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
946 cur_dts -= pkt->duration;
949 pktl= s->packet_buffer;
950 st->first_dts = cur_dts;
951 }else if(st->cur_dts)
954 for(; pktl; pktl= pktl->next){
955 if(pktl->pkt.stream_index != pkt->stream_index)
957 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
958 && !pktl->pkt.duration){
959 pktl->pkt.dts= cur_dts;
960 if(!st->codec->has_b_frames)
961 pktl->pkt.pts= cur_dts;
962 cur_dts += pkt->duration;
963 pktl->pkt.duration= pkt->duration;
967 if(st->first_dts == AV_NOPTS_VALUE)
968 st->cur_dts= cur_dts;
971 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
972 AVCodecParserContext *pc, AVPacket *pkt)
974 int num, den, presentation_delayed, delay, i;
977 if (s->flags & AVFMT_FLAG_NOFILLIN)
980 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
981 pkt->dts= AV_NOPTS_VALUE;
983 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
984 //FIXME Set low_delay = 0 when has_b_frames = 1
985 st->codec->has_b_frames = 1;
987 /* do we have a video B-frame ? */
988 delay= st->codec->has_b_frames;
989 presentation_delayed = 0;
991 // ignore delay caused by frame threading so that the mpeg2-without-dts
992 // warning will not trigger
993 if (delay && st->codec->active_thread_type&FF_THREAD_FRAME)
994 delay -= st->codec->thread_count-1;
996 /* XXX: need has_b_frame, but cannot get it if the codec is
999 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1000 presentation_delayed = 1;
1002 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts > pkt->pts && st->pts_wrap_bits<63
1003 /*&& pkt->dts-(1LL<<st->pts_wrap_bits) < pkt->pts*/){
1004 pkt->dts -= 1LL<<st->pts_wrap_bits;
1007 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1008 // we take the conservative approach and discard both
1009 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1010 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1011 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination\n");
1012 pkt->dts= pkt->pts= AV_NOPTS_VALUE;
1015 if (pkt->duration == 0) {
1016 compute_frame_duration(&num, &den, st, pc, pkt);
1018 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1020 if(pkt->duration != 0 && s->packet_buffer)
1021 update_initial_durations(s, st, pkt);
1025 /* correct timestamps with byte offset if demuxers only have timestamps
1026 on packet boundaries */
1027 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1028 /* this will estimate bitrate based on this frame's duration and size */
1029 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1030 if(pkt->pts != AV_NOPTS_VALUE)
1032 if(pkt->dts != AV_NOPTS_VALUE)
1036 if (pc && pc->dts_sync_point >= 0) {
1037 // we have synchronization info from the parser
1038 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1040 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1041 if (pkt->dts != AV_NOPTS_VALUE) {
1042 // got DTS from the stream, update reference timestamp
1043 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1044 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1045 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1046 // compute DTS based on reference timestamp
1047 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1048 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1050 if (pc->dts_sync_point > 0)
1051 st->reference_dts = pkt->dts; // new reference
1055 /* This may be redundant, but it should not hurt. */
1056 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1057 presentation_delayed = 1;
1059 // 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);
1060 /* interpolate PTS and DTS if they are not present */
1061 //We skip H264 currently because delay and has_b_frames are not reliably set
1062 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1063 if (presentation_delayed) {
1064 /* DTS = decompression timestamp */
1065 /* PTS = presentation timestamp */
1066 if (pkt->dts == AV_NOPTS_VALUE)
1067 pkt->dts = st->last_IP_pts;
1068 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1069 if (pkt->dts == AV_NOPTS_VALUE)
1070 pkt->dts = st->cur_dts;
1072 /* this is tricky: the dts must be incremented by the duration
1073 of the frame we are displaying, i.e. the last I- or P-frame */
1074 if (st->last_IP_duration == 0)
1075 st->last_IP_duration = pkt->duration;
1076 if(pkt->dts != AV_NOPTS_VALUE)
1077 st->cur_dts = pkt->dts + st->last_IP_duration;
1078 st->last_IP_duration = pkt->duration;
1079 st->last_IP_pts= pkt->pts;
1080 /* cannot compute PTS if not present (we can compute it only
1081 by knowing the future */
1082 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
1083 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
1084 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
1085 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1086 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
1087 pkt->pts += pkt->duration;
1088 // 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);
1092 /* presentation is not delayed : PTS and DTS are the same */
1093 if(pkt->pts == AV_NOPTS_VALUE)
1094 pkt->pts = pkt->dts;
1095 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1096 if(pkt->pts == AV_NOPTS_VALUE)
1097 pkt->pts = st->cur_dts;
1098 pkt->dts = pkt->pts;
1099 if(pkt->pts != AV_NOPTS_VALUE)
1100 st->cur_dts = pkt->pts + pkt->duration;
1104 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1105 st->pts_buffer[0]= pkt->pts;
1106 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1107 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1108 if(pkt->dts == AV_NOPTS_VALUE)
1109 pkt->dts= st->pts_buffer[0];
1110 if(st->codec->codec_id == CODEC_ID_H264){ //we skiped it above so we try here
1111 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1113 if(pkt->dts > st->cur_dts)
1114 st->cur_dts = pkt->dts;
1117 // 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);
1120 if(is_intra_only(st->codec))
1121 pkt->flags |= AV_PKT_FLAG_KEY;
1124 /* keyframe computation */
1125 if (pc->key_frame == 1)
1126 pkt->flags |= AV_PKT_FLAG_KEY;
1127 else if (pc->key_frame == -1 && pc->pict_type == AV_PICTURE_TYPE_I)
1128 pkt->flags |= AV_PKT_FLAG_KEY;
1131 pkt->convergence_duration = pc->convergence_duration;
1135 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1140 av_init_packet(pkt);
1143 /* select current input stream component */
1146 if (!st->need_parsing || !st->parser) {
1147 /* no parsing needed: we just output the packet as is */
1148 /* raw data support */
1150 st->cur_pkt.data= NULL;
1151 st->cur_pkt.side_data_elems = 0;
1152 st->cur_pkt.side_data = NULL;
1153 compute_pkt_fields(s, st, NULL, pkt);
1155 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1156 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1157 ff_reduce_index(s, st->index);
1158 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1161 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1162 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1163 st->cur_ptr, st->cur_len,
1164 st->cur_pkt.pts, st->cur_pkt.dts,
1166 st->cur_pkt.pts = AV_NOPTS_VALUE;
1167 st->cur_pkt.dts = AV_NOPTS_VALUE;
1168 /* increment read pointer */
1172 /* return packet if any */
1176 pkt->stream_index = st->index;
1177 pkt->pts = st->parser->pts;
1178 pkt->dts = st->parser->dts;
1179 pkt->pos = st->parser->pos;
1180 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1182 pkt->destruct= st->cur_pkt.destruct;
1183 st->cur_pkt.destruct= NULL;
1184 st->cur_pkt.data = NULL;
1185 assert(st->cur_len == 0);
1187 pkt->destruct = NULL;
1189 compute_pkt_fields(s, st, st->parser, pkt);
1191 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1192 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->pos : st->parser->frame_offset;
1193 ff_reduce_index(s, st->index);
1194 av_add_index_entry(st, pos, pkt->dts,
1195 0, 0, AVINDEX_KEYFRAME);
1202 av_free_packet(&st->cur_pkt);
1207 /* read next packet */
1208 ret = av_read_packet(s, &cur_pkt);
1210 if (ret == AVERROR(EAGAIN))
1212 /* return the last frames, if any */
1213 for(i = 0; i < s->nb_streams; i++) {
1215 if (st->parser && st->need_parsing) {
1216 av_parser_parse2(st->parser, st->codec,
1217 &pkt->data, &pkt->size,
1219 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1225 /* no more packets: really terminate parsing */
1228 st = s->streams[cur_pkt.stream_index];
1229 st->cur_pkt= cur_pkt;
1231 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1232 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1233 st->cur_pkt.pts < st->cur_pkt.dts){
1234 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1235 st->cur_pkt.stream_index,
1239 // av_free_packet(&st->cur_pkt);
1243 if(s->debug & FF_FDEBUG_TS)
1244 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1245 st->cur_pkt.stream_index,
1249 st->cur_pkt.duration,
1253 st->cur_ptr = st->cur_pkt.data;
1254 st->cur_len = st->cur_pkt.size;
1255 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1256 st->parser = av_parser_init(st->codec->codec_id);
1258 av_log(s, AV_LOG_WARNING, "parser not found for codec "
1259 "%s, packets or times may be invalid.\n",
1260 avcodec_get_name(st->codec->codec_id));
1261 /* no parser available: just output the raw packets */
1262 st->need_parsing = AVSTREAM_PARSE_NONE;
1263 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1264 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1265 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1266 st->parser->flags |= PARSER_FLAG_ONCE;
1271 if(s->debug & FF_FDEBUG_TS)
1272 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1283 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1287 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
1290 pktl = s->packet_buffer;
1292 AVPacket *next_pkt= &pktl->pkt;
1294 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
1295 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1296 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
1297 if( pktl->pkt.stream_index == next_pkt->stream_index
1298 && (0 > av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)))
1299 && av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1300 next_pkt->pts= pktl->pkt.dts;
1304 pktl = s->packet_buffer;
1307 if( next_pkt->pts != AV_NOPTS_VALUE
1308 || next_pkt->dts == AV_NOPTS_VALUE
1310 /* read packet from packet buffer, if there is data */
1312 s->packet_buffer = pktl->next;
1318 int ret= read_frame_internal(s, pkt);
1320 if(pktl && ret != AVERROR(EAGAIN)){
1327 if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1328 &s->packet_buffer_end)) < 0)
1329 return AVERROR(ENOMEM);
1331 assert(!s->packet_buffer);
1332 return read_frame_internal(s, pkt);
1337 /* XXX: suppress the packet queue */
1338 static void flush_packet_queue(AVFormatContext *s)
1343 pktl = s->packet_buffer;
1346 s->packet_buffer = pktl->next;
1347 av_free_packet(&pktl->pkt);
1350 while(s->raw_packet_buffer){
1351 pktl = s->raw_packet_buffer;
1352 s->raw_packet_buffer = pktl->next;
1353 av_free_packet(&pktl->pkt);
1356 s->packet_buffer_end=
1357 s->raw_packet_buffer_end= NULL;
1358 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1361 /*******************************************************/
1364 int av_find_default_stream_index(AVFormatContext *s)
1366 int first_audio_index = -1;
1370 if (s->nb_streams <= 0)
1372 for(i = 0; i < s->nb_streams; i++) {
1374 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1377 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1378 first_audio_index = i;
1380 return first_audio_index >= 0 ? first_audio_index : 0;
1384 * Flush the frame reader.
1386 void ff_read_frame_flush(AVFormatContext *s)
1391 flush_packet_queue(s);
1395 /* for each stream, reset read state */
1396 for(i = 0; i < s->nb_streams; i++) {
1400 av_parser_close(st->parser);
1402 av_free_packet(&st->cur_pkt);
1404 st->last_IP_pts = AV_NOPTS_VALUE;
1405 st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1406 st->reference_dts = AV_NOPTS_VALUE;
1411 st->probe_packets = MAX_PROBE_PACKETS;
1413 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1414 st->pts_buffer[j]= AV_NOPTS_VALUE;
1418 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
1421 for(i = 0; i < s->nb_streams; i++) {
1422 AVStream *st = s->streams[i];
1424 st->cur_dts = av_rescale(timestamp,
1425 st->time_base.den * (int64_t)ref_st->time_base.num,
1426 st->time_base.num * (int64_t)ref_st->time_base.den);
1430 void ff_reduce_index(AVFormatContext *s, int stream_index)
1432 AVStream *st= s->streams[stream_index];
1433 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1435 if((unsigned)st->nb_index_entries >= max_entries){
1437 for(i=0; 2*i<st->nb_index_entries; i++)
1438 st->index_entries[i]= st->index_entries[2*i];
1439 st->nb_index_entries= i;
1443 int ff_add_index_entry(AVIndexEntry **index_entries,
1444 int *nb_index_entries,
1445 unsigned int *index_entries_allocated_size,
1446 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1448 AVIndexEntry *entries, *ie;
1451 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1454 entries = av_fast_realloc(*index_entries,
1455 index_entries_allocated_size,
1456 (*nb_index_entries + 1) *
1457 sizeof(AVIndexEntry));
1461 *index_entries= entries;
1463 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1466 index= (*nb_index_entries)++;
1467 ie= &entries[index];
1468 assert(index==0 || ie[-1].timestamp < timestamp);
1470 ie= &entries[index];
1471 if(ie->timestamp != timestamp){
1472 if(ie->timestamp <= timestamp)
1474 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1475 (*nb_index_entries)++;
1476 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1477 distance= ie->min_distance;
1481 ie->timestamp = timestamp;
1482 ie->min_distance= distance;
1489 int av_add_index_entry(AVStream *st,
1490 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1492 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1493 &st->index_entries_allocated_size, pos,
1494 timestamp, size, distance, flags);
1497 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1498 int64_t wanted_timestamp, int flags)
1506 //optimize appending index entries at the end
1507 if(b && entries[b-1].timestamp < wanted_timestamp)
1512 timestamp = entries[m].timestamp;
1513 if(timestamp >= wanted_timestamp)
1515 if(timestamp <= wanted_timestamp)
1518 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1520 if(!(flags & AVSEEK_FLAG_ANY)){
1521 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1522 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1531 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1534 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1535 wanted_timestamp, flags);
1538 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1539 AVInputFormat *avif= s->iformat;
1540 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1541 int64_t ts_min, ts_max, ts;
1546 if (stream_index < 0)
1549 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1552 ts_min= AV_NOPTS_VALUE;
1553 pos_limit= -1; //gcc falsely says it may be uninitialized
1555 st= s->streams[stream_index];
1556 if(st->index_entries){
1559 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()
1560 index= FFMAX(index, 0);
1561 e= &st->index_entries[index];
1563 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1565 ts_min= e->timestamp;
1566 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1572 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1573 assert(index < st->nb_index_entries);
1575 e= &st->index_entries[index];
1576 assert(e->timestamp >= target_ts);
1578 ts_max= e->timestamp;
1579 pos_limit= pos_max - e->min_distance;
1580 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1581 pos_max,pos_limit, ts_max);
1585 pos= av_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1590 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1593 av_update_cur_dts(s, st, ts);
1598 int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts, int64_t pos_min, int64_t pos_max, int64_t pos_limit, int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret, int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )){
1600 int64_t start_pos, filesize;
1603 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1605 if(ts_min == AV_NOPTS_VALUE){
1606 pos_min = s->data_offset;
1607 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1608 if (ts_min == AV_NOPTS_VALUE)
1612 if(ts_max == AV_NOPTS_VALUE){
1614 filesize = avio_size(s->pb);
1615 pos_max = filesize - 1;
1618 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1620 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1621 if (ts_max == AV_NOPTS_VALUE)
1625 int64_t tmp_pos= pos_max + 1;
1626 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1627 if(tmp_ts == AV_NOPTS_VALUE)
1631 if(tmp_pos >= filesize)
1637 if(ts_min > ts_max){
1639 }else if(ts_min == ts_max){
1644 while (pos_min < pos_limit) {
1645 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1646 pos_min, pos_max, ts_min, ts_max);
1647 assert(pos_limit <= pos_max);
1650 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1651 // interpolate position (better than dichotomy)
1652 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1653 + pos_min - approximate_keyframe_distance;
1654 }else if(no_change==1){
1655 // bisection, if interpolation failed to change min or max pos last time
1656 pos = (pos_min + pos_limit)>>1;
1658 /* linear search if bisection failed, can only happen if there
1659 are very few or no keyframes between min/max */
1664 else if(pos > pos_limit)
1668 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1673 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1674 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1675 pos_limit, start_pos, no_change);
1676 if(ts == AV_NOPTS_VALUE){
1677 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1680 assert(ts != AV_NOPTS_VALUE);
1681 if (target_ts <= ts) {
1682 pos_limit = start_pos - 1;
1686 if (target_ts >= ts) {
1692 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1693 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1695 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1697 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1698 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1699 pos, ts_min, target_ts, ts_max);
1704 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1705 int64_t pos_min, pos_max;
1709 if (stream_index < 0)
1712 st= s->streams[stream_index];
1715 pos_min = s->data_offset;
1716 pos_max = avio_size(s->pb) - 1;
1718 if (pos < pos_min) pos= pos_min;
1719 else if(pos > pos_max) pos= pos_max;
1721 avio_seek(s->pb, pos, SEEK_SET);
1724 av_update_cur_dts(s, st, ts);
1729 static int seek_frame_generic(AVFormatContext *s,
1730 int stream_index, int64_t timestamp, int flags)
1737 st = s->streams[stream_index];
1739 index = av_index_search_timestamp(st, timestamp, flags);
1741 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1744 if(index < 0 || index==st->nb_index_entries-1){
1748 if(st->nb_index_entries){
1749 assert(st->index_entries);
1750 ie= &st->index_entries[st->nb_index_entries-1];
1751 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1753 av_update_cur_dts(s, st, ie->timestamp);
1755 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1761 ret = av_read_frame(s, &pkt);
1762 }while(ret == AVERROR(EAGAIN));
1765 av_free_packet(&pkt);
1766 if(stream_index == pkt.stream_index){
1767 if((pkt.flags & AV_PKT_FLAG_KEY) && pkt.dts > timestamp)
1771 index = av_index_search_timestamp(st, timestamp, flags);
1776 ff_read_frame_flush(s);
1777 if (s->iformat->read_seek){
1778 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1781 ie = &st->index_entries[index];
1782 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1784 av_update_cur_dts(s, st, ie->timestamp);
1789 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1794 ff_read_frame_flush(s);
1796 if(flags & AVSEEK_FLAG_BYTE)
1797 return seek_frame_byte(s, stream_index, timestamp, flags);
1799 if(stream_index < 0){
1800 stream_index= av_find_default_stream_index(s);
1801 if(stream_index < 0)
1804 st= s->streams[stream_index];
1805 /* timestamp for default must be expressed in AV_TIME_BASE units */
1806 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1809 /* first, we try the format specific seek */
1810 if (s->iformat->read_seek)
1811 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1818 if(s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH))
1819 return av_seek_frame_binary(s, stream_index, timestamp, flags);
1820 else if (!(s->iformat->flags & AVFMT_NOGENSEARCH))
1821 return seek_frame_generic(s, stream_index, timestamp, flags);
1826 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1828 if(min_ts > ts || max_ts < ts)
1831 ff_read_frame_flush(s);
1833 if (s->iformat->read_seek2)
1834 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1836 if(s->iformat->read_timestamp){
1837 //try to seek via read_timestamp()
1840 //Fallback to old API if new is not implemented but old is
1841 //Note the old has somewat different sematics
1842 if(s->iformat->read_seek || 1)
1843 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1845 // try some generic seek like seek_frame_generic() but with new ts semantics
1848 /*******************************************************/
1851 * Return TRUE if the stream has accurate duration in any stream.
1853 * @return TRUE if the stream has accurate duration for at least one component.
1855 static int has_duration(AVFormatContext *ic)
1860 for(i = 0;i < ic->nb_streams; i++) {
1861 st = ic->streams[i];
1862 if (st->duration != AV_NOPTS_VALUE)
1869 * Estimate the stream timings from the one of each components.
1871 * Also computes the global bitrate if possible.
1873 static void update_stream_timings(AVFormatContext *ic)
1875 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1876 int64_t duration, duration1;
1880 start_time = INT64_MAX;
1881 start_time_text = INT64_MAX;
1882 end_time = INT64_MIN;
1883 duration = INT64_MIN;
1884 for(i = 0;i < ic->nb_streams; i++) {
1885 st = ic->streams[i];
1886 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1887 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1888 if (st->codec->codec_id == CODEC_ID_DVB_TELETEXT) {
1889 if (start_time1 < start_time_text)
1890 start_time_text = start_time1;
1892 if (start_time1 < start_time)
1893 start_time = start_time1;
1894 if (st->duration != AV_NOPTS_VALUE) {
1895 end_time1 = start_time1
1896 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1897 if (end_time1 > end_time)
1898 end_time = end_time1;
1901 if (st->duration != AV_NOPTS_VALUE) {
1902 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1903 if (duration1 > duration)
1904 duration = duration1;
1907 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
1908 start_time = start_time_text;
1909 if (start_time != INT64_MAX) {
1910 ic->start_time = start_time;
1911 if (end_time != INT64_MIN) {
1912 if (end_time - start_time > duration)
1913 duration = end_time - start_time;
1916 if (duration != INT64_MIN) {
1917 ic->duration = duration;
1918 if (ic->file_size > 0) {
1919 /* compute the bitrate */
1920 ic->bit_rate = (double)ic->file_size * 8.0 * AV_TIME_BASE /
1921 (double)ic->duration;
1926 static void fill_all_stream_timings(AVFormatContext *ic)
1931 update_stream_timings(ic);
1932 for(i = 0;i < ic->nb_streams; i++) {
1933 st = ic->streams[i];
1934 if (st->start_time == AV_NOPTS_VALUE) {
1935 if(ic->start_time != AV_NOPTS_VALUE)
1936 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
1937 if(ic->duration != AV_NOPTS_VALUE)
1938 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
1943 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
1945 int64_t filesize, duration;
1949 /* if bit_rate is already set, we believe it */
1950 if (ic->bit_rate <= 0) {
1952 for(i=0;i<ic->nb_streams;i++) {
1953 st = ic->streams[i];
1954 if (st->codec->bit_rate > 0)
1955 bit_rate += st->codec->bit_rate;
1957 ic->bit_rate = bit_rate;
1960 /* if duration is already set, we believe it */
1961 if (ic->duration == AV_NOPTS_VALUE &&
1962 ic->bit_rate != 0 &&
1963 ic->file_size != 0) {
1964 filesize = ic->file_size;
1966 for(i = 0; i < ic->nb_streams; i++) {
1967 st = ic->streams[i];
1968 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
1969 if (st->duration == AV_NOPTS_VALUE)
1970 st->duration = duration;
1976 #define DURATION_MAX_READ_SIZE 250000
1977 #define DURATION_MAX_RETRY 3
1979 /* only usable for MPEG-PS streams */
1980 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
1982 AVPacket pkt1, *pkt = &pkt1;
1984 int read_size, i, ret;
1986 int64_t filesize, offset, duration;
1991 /* flush packet queue */
1992 flush_packet_queue(ic);
1994 for (i=0; i<ic->nb_streams; i++) {
1995 st = ic->streams[i];
1996 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
1997 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2000 av_parser_close(st->parser);
2002 av_free_packet(&st->cur_pkt);
2006 /* estimate the end time (duration) */
2007 /* XXX: may need to support wrapping */
2008 filesize = ic->file_size;
2009 end_time = AV_NOPTS_VALUE;
2011 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2015 avio_seek(ic->pb, offset, SEEK_SET);
2018 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2022 ret = av_read_packet(ic, pkt);
2023 } while(ret == AVERROR(EAGAIN));
2026 read_size += pkt->size;
2027 st = ic->streams[pkt->stream_index];
2028 if (pkt->pts != AV_NOPTS_VALUE &&
2029 (st->start_time != AV_NOPTS_VALUE ||
2030 st->first_dts != AV_NOPTS_VALUE)) {
2031 duration = end_time = pkt->pts;
2032 if (st->start_time != AV_NOPTS_VALUE)
2033 duration -= st->start_time;
2035 duration -= st->first_dts;
2037 duration += 1LL<<st->pts_wrap_bits;
2039 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2040 st->duration = duration;
2043 av_free_packet(pkt);
2045 }while( end_time==AV_NOPTS_VALUE
2046 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2047 && ++retry <= DURATION_MAX_RETRY);
2049 fill_all_stream_timings(ic);
2051 avio_seek(ic->pb, old_offset, SEEK_SET);
2052 for (i=0; i<ic->nb_streams; i++) {
2054 st->cur_dts= st->first_dts;
2055 st->last_IP_pts = AV_NOPTS_VALUE;
2056 st->reference_dts = AV_NOPTS_VALUE;
2060 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2064 /* get the file size, if possible */
2065 if (ic->iformat->flags & AVFMT_NOFILE) {
2068 file_size = avio_size(ic->pb);
2072 ic->file_size = file_size;
2074 if ((!strcmp(ic->iformat->name, "mpeg") ||
2075 !strcmp(ic->iformat->name, "mpegts")) &&
2076 file_size && ic->pb->seekable) {
2077 /* get accurate estimate from the PTSes */
2078 estimate_timings_from_pts(ic, old_offset);
2079 } else if (has_duration(ic)) {
2080 /* at least one component has timings - we use them for all
2082 fill_all_stream_timings(ic);
2084 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2085 /* less precise: use bitrate info */
2086 estimate_timings_from_bit_rate(ic);
2088 update_stream_timings(ic);
2092 AVStream av_unused *st;
2093 for(i = 0;i < ic->nb_streams; i++) {
2094 st = ic->streams[i];
2095 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2096 (double) st->start_time / AV_TIME_BASE,
2097 (double) st->duration / AV_TIME_BASE);
2099 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2100 (double) ic->start_time / AV_TIME_BASE,
2101 (double) ic->duration / AV_TIME_BASE,
2102 ic->bit_rate / 1000);
2106 static int has_codec_parameters(AVCodecContext *avctx)
2109 switch (avctx->codec_type) {
2110 case AVMEDIA_TYPE_AUDIO:
2111 val = avctx->sample_rate && avctx->channels && avctx->sample_fmt != AV_SAMPLE_FMT_NONE;
2112 if(!avctx->frame_size &&
2113 (avctx->codec_id == CODEC_ID_VORBIS ||
2114 avctx->codec_id == CODEC_ID_AAC ||
2115 avctx->codec_id == CODEC_ID_MP1 ||
2116 avctx->codec_id == CODEC_ID_MP2 ||
2117 avctx->codec_id == CODEC_ID_MP3 ||
2118 avctx->codec_id == CODEC_ID_SPEEX ||
2119 avctx->codec_id == CODEC_ID_CELT))
2122 case AVMEDIA_TYPE_VIDEO:
2123 val = avctx->width && avctx->pix_fmt != PIX_FMT_NONE;
2125 case AVMEDIA_TYPE_DATA:
2126 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2131 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2134 static int has_decode_delay_been_guessed(AVStream *st)
2136 return st->codec->codec_id != CODEC_ID_H264 ||
2137 st->codec_info_nb_frames >= 6 + st->codec->has_b_frames;
2140 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2144 int got_picture, data_size, ret=0;
2147 if(!st->codec->codec){
2148 codec = avcodec_find_decoder(st->codec->codec_id);
2151 ret = avcodec_open2(st->codec, codec, options);
2156 if(!has_codec_parameters(st->codec) || !has_decode_delay_been_guessed(st) ||
2157 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF)) {
2158 switch(st->codec->codec_type) {
2159 case AVMEDIA_TYPE_VIDEO:
2160 avcodec_get_frame_defaults(&picture);
2161 ret = avcodec_decode_video2(st->codec, &picture,
2162 &got_picture, avpkt);
2164 case AVMEDIA_TYPE_AUDIO:
2165 data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
2166 samples = av_malloc(data_size);
2169 ret = avcodec_decode_audio3(st->codec, samples,
2181 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2183 while (tags->id != CODEC_ID_NONE) {
2191 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2194 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2195 if(tag == tags[i].tag)
2198 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2199 if (ff_toupper4(tag) == ff_toupper4(tags[i].tag))
2202 return CODEC_ID_NONE;
2205 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2208 for(i=0; tags && tags[i]; i++){
2209 int tag= ff_codec_get_tag(tags[i], id);
2215 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2218 for(i=0; tags && tags[i]; i++){
2219 enum CodecID id= ff_codec_get_id(tags[i], tag);
2220 if(id!=CODEC_ID_NONE) return id;
2222 return CODEC_ID_NONE;
2225 static void compute_chapters_end(AVFormatContext *s)
2228 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2230 for (i = 0; i < s->nb_chapters; i++)
2231 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2232 AVChapter *ch = s->chapters[i];
2233 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2236 for (j = 0; j < s->nb_chapters; j++) {
2237 AVChapter *ch1 = s->chapters[j];
2238 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2239 if (j != i && next_start > ch->start && next_start < end)
2242 ch->end = (end == INT64_MAX) ? ch->start : end;
2246 static int get_std_framerate(int i){
2247 if(i<60*12) return i*1001;
2248 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2252 * Is the time base unreliable.
2253 * This is a heuristic to balance between quick acceptance of the values in
2254 * the headers vs. some extra checks.
2255 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2256 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2257 * And there are "variable" fps files this needs to detect as well.
2259 static int tb_unreliable(AVCodecContext *c){
2260 if( c->time_base.den >= 101L*c->time_base.num
2261 || c->time_base.den < 5L*c->time_base.num
2262 /* || c->codec_tag == AV_RL32("DIVX")
2263 || c->codec_tag == AV_RL32("XVID")*/
2264 || c->codec_id == CODEC_ID_MPEG2VIDEO
2265 || c->codec_id == CODEC_ID_H264
2271 #if FF_API_FORMAT_PARAMETERS
2272 int av_find_stream_info(AVFormatContext *ic)
2274 return avformat_find_stream_info(ic, NULL);
2278 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2280 int i, count, ret, read_size, j;
2282 AVPacket pkt1, *pkt;
2283 int64_t old_offset = avio_tell(ic->pb);
2284 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2286 for(i=0;i<ic->nb_streams;i++) {
2288 st = ic->streams[i];
2289 if (st->codec->codec_id == CODEC_ID_AAC && st->codec->extradata_size) {
2290 // We need to discard these since they can be plain wrong for
2291 // backwards compatible HE-AAC signaling.
2292 // But when we have no extradata we need to keep them or we can't
2293 // play anything at all.
2294 st->codec->sample_rate = 0;
2295 st->codec->frame_size = 0;
2296 st->codec->channels = 0;
2299 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2300 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2301 /* if(!st->time_base.num)
2303 if(!st->codec->time_base.num)
2304 st->codec->time_base= st->time_base;
2306 //only for the split stuff
2307 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2308 st->parser = av_parser_init(st->codec->codec_id);
2309 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2310 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2313 assert(!st->codec->codec);
2314 codec = avcodec_find_decoder(st->codec->codec_id);
2316 /* Ensure that subtitle_header is properly set. */
2317 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2318 && codec && !st->codec->codec)
2319 avcodec_open2(st->codec, codec, options ? &options[i] : NULL);
2321 //try to just open decoders, in case this is enough to get parameters
2322 if(!has_codec_parameters(st->codec)){
2323 if (codec && !st->codec->codec)
2324 avcodec_open2(st->codec, codec, options ? &options[i] : NULL);
2328 for (i=0; i<ic->nb_streams; i++) {
2329 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2335 if(url_interrupt_cb()){
2337 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2341 /* check if one codec still needs to be handled */
2342 for(i=0;i<ic->nb_streams;i++) {
2343 int fps_analyze_framecount = 20;
2345 st = ic->streams[i];
2346 if (!has_codec_parameters(st->codec))
2348 /* if the timebase is coarse (like the usual millisecond precision
2349 of mkv), we need to analyze more frames to reliably arrive at
2351 if (av_q2d(st->time_base) > 0.0005)
2352 fps_analyze_framecount *= 2;
2353 if (ic->fps_probe_size >= 0)
2354 fps_analyze_framecount = ic->fps_probe_size;
2355 /* variable fps and no guess at the real fps */
2356 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2357 && st->info->duration_count < fps_analyze_framecount
2358 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2360 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2362 if(st->first_dts == AV_NOPTS_VALUE)
2365 if (i == ic->nb_streams) {
2366 /* NOTE: if the format has no header, then we need to read
2367 some packets to get most of the streams, so we cannot
2369 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2370 /* if we found the info for all the codecs, we can stop */
2372 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2376 /* we did not get all the codec info, but we read too much data */
2377 if (read_size >= ic->probesize) {
2379 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2383 /* NOTE: a new stream can be added there if no header in file
2384 (AVFMTCTX_NOHEADER) */
2385 ret = read_frame_internal(ic, &pkt1);
2386 if (ret == AVERROR(EAGAIN))
2391 ret = -1; /* we could not have all the codec parameters before EOF */
2392 for(i=0;i<ic->nb_streams;i++) {
2393 st = ic->streams[i];
2394 if (!has_codec_parameters(st->codec)){
2396 avcodec_string(buf, sizeof(buf), st->codec, 0);
2397 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2405 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2406 if ((ret = av_dup_packet(pkt)) < 0)
2407 goto find_stream_info_err;
2409 read_size += pkt->size;
2411 st = ic->streams[pkt->stream_index];
2412 if (st->codec_info_nb_frames>1) {
2414 if (st->time_base.den > 0 && (t=av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q)) >= ic->max_analyze_duration) {
2415 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2418 st->info->codec_info_duration += pkt->duration;
2421 int64_t last = st->info->last_dts;
2422 int64_t duration= pkt->dts - last;
2424 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
2425 double dur= duration * av_q2d(st->time_base);
2427 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2428 // av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
2429 if (st->info->duration_count < 2)
2430 memset(st->info->duration_error, 0, sizeof(st->info->duration_error));
2431 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error); i++) {
2432 int framerate= get_std_framerate(i);
2433 int ticks= lrintf(dur*framerate/(1001*12));
2434 double error= dur - ticks*1001*12/(double)framerate;
2435 st->info->duration_error[i] += error*error;
2437 st->info->duration_count++;
2438 // ignore the first 4 values, they might have some random jitter
2439 if (st->info->duration_count > 3)
2440 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2442 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2443 st->info->last_dts = pkt->dts;
2445 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2446 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2448 st->codec->extradata_size= i;
2449 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2450 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2451 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2455 /* if still no information, we try to open the codec and to
2456 decompress the frame. We try to avoid that in most cases as
2457 it takes longer and uses more memory. For MPEG-4, we need to
2458 decompress for QuickTime.
2460 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2461 least one frame of codec data, this makes sure the codec initializes
2462 the channel configuration and does not only trust the values from the container.
2464 try_decode_frame(st, pkt, (options && i < orig_nb_streams )? &options[i] : NULL);
2466 st->codec_info_nb_frames++;
2470 // close codecs which were opened in try_decode_frame()
2471 for(i=0;i<ic->nb_streams;i++) {
2472 st = ic->streams[i];
2473 if(st->codec->codec)
2474 avcodec_close(st->codec);
2476 for(i=0;i<ic->nb_streams;i++) {
2477 st = ic->streams[i];
2478 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2479 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2480 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2481 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2482 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2483 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2484 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2485 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2486 st->codec->codec_tag= tag;
2489 // the check for tb_unreliable() is not completely correct, since this is not about handling
2490 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2491 // ipmovie.c produces.
2492 if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
2493 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
2494 if (st->info->duration_count && !st->r_frame_rate.num
2495 && tb_unreliable(st->codec) /*&&
2496 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2497 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2499 double best_error= 2*av_q2d(st->time_base);
2500 best_error = best_error*best_error*st->info->duration_count*1000*12*30;
2502 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error); j++) {
2503 double error = st->info->duration_error[j] * get_std_framerate(j);
2504 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2505 // av_log(NULL, AV_LOG_ERROR, "%f %f\n", get_std_framerate(j) / 12.0/1001, error);
2506 if(error < best_error){
2508 num = get_std_framerate(j);
2511 // do not increase frame rate by more than 1 % in order to match a standard rate.
2512 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2513 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2516 if (!st->r_frame_rate.num){
2517 if( st->codec->time_base.den * (int64_t)st->time_base.num
2518 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2519 st->r_frame_rate.num = st->codec->time_base.den;
2520 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2522 st->r_frame_rate.num = st->time_base.den;
2523 st->r_frame_rate.den = st->time_base.num;
2526 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2527 if(!st->codec->bits_per_coded_sample)
2528 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2529 // set stream disposition based on audio service type
2530 switch (st->codec->audio_service_type) {
2531 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2532 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2533 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2534 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2535 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2536 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2537 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2538 st->disposition = AV_DISPOSITION_COMMENT; break;
2539 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2540 st->disposition = AV_DISPOSITION_KARAOKE; break;
2545 estimate_timings(ic, old_offset);
2547 compute_chapters_end(ic);
2550 /* correct DTS for B-frame streams with no timestamps */
2551 for(i=0;i<ic->nb_streams;i++) {
2552 st = ic->streams[i];
2553 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2555 ppktl = &ic->packet_buffer;
2557 if(ppkt1->stream_index != i)
2559 if(ppkt1->pkt->dts < 0)
2561 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2563 ppkt1->pkt->dts -= delta;
2568 st->cur_dts -= delta;
2574 find_stream_info_err:
2575 for (i=0; i < ic->nb_streams; i++)
2576 av_freep(&ic->streams[i]->info);
2580 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2584 for (i = 0; i < ic->nb_programs; i++) {
2585 if (ic->programs[i] == last) {
2589 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2590 if (ic->programs[i]->stream_index[j] == s)
2591 return ic->programs[i];
2597 int av_find_best_stream(AVFormatContext *ic,
2598 enum AVMediaType type,
2599 int wanted_stream_nb,
2601 AVCodec **decoder_ret,
2604 int i, nb_streams = ic->nb_streams;
2605 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2606 unsigned *program = NULL;
2607 AVCodec *decoder = NULL, *best_decoder = NULL;
2609 if (related_stream >= 0 && wanted_stream_nb < 0) {
2610 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2612 program = p->stream_index;
2613 nb_streams = p->nb_stream_indexes;
2616 for (i = 0; i < nb_streams; i++) {
2617 int real_stream_index = program ? program[i] : i;
2618 AVStream *st = ic->streams[real_stream_index];
2619 AVCodecContext *avctx = st->codec;
2620 if (avctx->codec_type != type)
2622 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2624 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2627 decoder = avcodec_find_decoder(st->codec->codec_id);
2630 ret = AVERROR_DECODER_NOT_FOUND;
2634 if (best_count >= st->codec_info_nb_frames)
2636 best_count = st->codec_info_nb_frames;
2637 ret = real_stream_index;
2638 best_decoder = decoder;
2639 if (program && i == nb_streams - 1 && ret < 0) {
2641 nb_streams = ic->nb_streams;
2642 i = 0; /* no related stream found, try again with everything */
2646 *decoder_ret = best_decoder;
2650 /*******************************************************/
2652 int av_read_play(AVFormatContext *s)
2654 if (s->iformat->read_play)
2655 return s->iformat->read_play(s);
2657 return avio_pause(s->pb, 0);
2658 return AVERROR(ENOSYS);
2661 int av_read_pause(AVFormatContext *s)
2663 if (s->iformat->read_pause)
2664 return s->iformat->read_pause(s);
2666 return avio_pause(s->pb, 1);
2667 return AVERROR(ENOSYS);
2670 void av_close_input_stream(AVFormatContext *s)
2672 flush_packet_queue(s);
2673 if (s->iformat->read_close)
2674 s->iformat->read_close(s);
2675 avformat_free_context(s);
2678 void avformat_free_context(AVFormatContext *s)
2684 if (s->iformat && s->iformat->priv_class && s->priv_data)
2685 av_opt_free(s->priv_data);
2687 for(i=0;i<s->nb_streams;i++) {
2688 /* free all data in a stream component */
2691 av_parser_close(st->parser);
2692 av_free_packet(&st->cur_pkt);
2694 av_dict_free(&st->metadata);
2695 av_free(st->index_entries);
2696 av_free(st->codec->extradata);
2697 av_free(st->codec->subtitle_header);
2699 av_free(st->priv_data);
2703 for(i=s->nb_programs-1; i>=0; i--) {
2704 av_dict_free(&s->programs[i]->metadata);
2705 av_freep(&s->programs[i]->stream_index);
2706 av_freep(&s->programs[i]);
2708 av_freep(&s->programs);
2709 av_freep(&s->priv_data);
2710 while(s->nb_chapters--) {
2711 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2712 av_free(s->chapters[s->nb_chapters]);
2714 av_freep(&s->chapters);
2715 av_dict_free(&s->metadata);
2716 av_freep(&s->streams);
2720 void av_close_input_file(AVFormatContext *s)
2722 AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2724 av_close_input_stream(s);
2729 AVStream *av_new_stream(AVFormatContext *s, int id)
2735 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2737 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2740 s->streams = streams;
2742 st = av_mallocz(sizeof(AVStream));
2745 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2750 st->codec = avcodec_alloc_context3(NULL);
2752 /* no default bitrate if decoding */
2753 st->codec->bit_rate = 0;
2755 st->index = s->nb_streams;
2757 st->start_time = AV_NOPTS_VALUE;
2758 st->duration = AV_NOPTS_VALUE;
2759 /* we set the current DTS to 0 so that formats without any timestamps
2760 but durations get some timestamps, formats with some unknown
2761 timestamps have their first few packets buffered and the
2762 timestamps corrected before they are returned to the user */
2764 st->first_dts = AV_NOPTS_VALUE;
2765 st->probe_packets = MAX_PROBE_PACKETS;
2767 /* default pts setting is MPEG-like */
2768 av_set_pts_info(st, 33, 1, 90000);
2769 st->last_IP_pts = AV_NOPTS_VALUE;
2770 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2771 st->pts_buffer[i]= AV_NOPTS_VALUE;
2772 st->reference_dts = AV_NOPTS_VALUE;
2774 st->sample_aspect_ratio = (AVRational){0,1};
2776 s->streams[s->nb_streams++] = st;
2780 AVProgram *av_new_program(AVFormatContext *ac, int id)
2782 AVProgram *program=NULL;
2785 av_dlog(ac, "new_program: id=0x%04x\n", id);
2787 for(i=0; i<ac->nb_programs; i++)
2788 if(ac->programs[i]->id == id)
2789 program = ac->programs[i];
2792 program = av_mallocz(sizeof(AVProgram));
2795 dynarray_add(&ac->programs, &ac->nb_programs, program);
2796 program->discard = AVDISCARD_NONE;
2803 AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2805 AVChapter *chapter = NULL;
2808 for(i=0; i<s->nb_chapters; i++)
2809 if(s->chapters[i]->id == id)
2810 chapter = s->chapters[i];
2813 chapter= av_mallocz(sizeof(AVChapter));
2816 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2818 av_dict_set(&chapter->metadata, "title", title, 0);
2820 chapter->time_base= time_base;
2821 chapter->start = start;
2827 /************************************************************/
2828 /* output media file */
2830 #if FF_API_FORMAT_PARAMETERS
2831 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2833 if (s->oformat->priv_data_size > 0) {
2834 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2836 return AVERROR(ENOMEM);
2837 if (s->oformat->priv_class) {
2838 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2839 av_opt_set_defaults(s->priv_data);
2842 s->priv_data = NULL;
2848 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
2849 const char *format, const char *filename)
2851 AVFormatContext *s = avformat_alloc_context();
2860 oformat = av_guess_format(format, NULL, NULL);
2862 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
2863 ret = AVERROR(EINVAL);
2867 oformat = av_guess_format(NULL, filename, NULL);
2869 ret = AVERROR(EINVAL);
2870 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
2877 s->oformat = oformat;
2878 if (s->oformat->priv_data_size > 0) {
2879 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2882 if (s->oformat->priv_class) {
2883 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2884 av_opt_set_defaults(s->priv_data);
2887 s->priv_data = NULL;
2890 av_strlcpy(s->filename, filename, sizeof(s->filename));
2894 av_log(s, AV_LOG_ERROR, "Out of memory\n");
2895 ret = AVERROR(ENOMEM);
2897 avformat_free_context(s);
2901 #if FF_API_ALLOC_OUTPUT_CONTEXT
2902 AVFormatContext *avformat_alloc_output_context(const char *format,
2903 AVOutputFormat *oformat, const char *filename)
2905 AVFormatContext *avctx;
2906 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
2907 return ret < 0 ? NULL : avctx;
2911 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
2913 const AVCodecTag *avctag;
2915 enum CodecID id = CODEC_ID_NONE;
2916 unsigned int tag = 0;
2919 * Check that tag + id is in the table
2920 * If neither is in the table -> OK
2921 * If tag is in the table with another id -> FAIL
2922 * If id is in the table with another tag -> FAIL unless strict < normal
2924 for (n = 0; s->oformat->codec_tag[n]; n++) {
2925 avctag = s->oformat->codec_tag[n];
2926 while (avctag->id != CODEC_ID_NONE) {
2927 if (ff_toupper4(avctag->tag) == ff_toupper4(st->codec->codec_tag)) {
2929 if (id == st->codec->codec_id)
2932 if (avctag->id == st->codec->codec_id)
2937 if (id != CODEC_ID_NONE)
2939 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
2944 #if FF_API_FORMAT_PARAMETERS
2945 int av_write_header(AVFormatContext *s)
2947 return avformat_write_header(s, NULL);
2951 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
2955 AVDictionary *tmp = NULL;
2958 av_dict_copy(&tmp, *options, 0);
2959 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
2961 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
2962 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
2965 // some sanity checks
2966 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
2967 av_log(s, AV_LOG_ERROR, "no streams\n");
2968 ret = AVERROR(EINVAL);
2972 for(i=0;i<s->nb_streams;i++) {
2975 switch (st->codec->codec_type) {
2976 case AVMEDIA_TYPE_AUDIO:
2977 if(st->codec->sample_rate<=0){
2978 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
2979 ret = AVERROR(EINVAL);
2982 if(!st->codec->block_align)
2983 st->codec->block_align = st->codec->channels *
2984 av_get_bits_per_sample(st->codec->codec_id) >> 3;
2986 case AVMEDIA_TYPE_VIDEO:
2987 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
2988 av_log(s, AV_LOG_ERROR, "time base not set\n");
2989 ret = AVERROR(EINVAL);
2992 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
2993 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
2994 ret = AVERROR(EINVAL);
2997 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)){
2998 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
2999 ret = AVERROR(EINVAL);
3005 if(s->oformat->codec_tag){
3006 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)){
3007 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3008 st->codec->codec_tag= 0;
3010 if(st->codec->codec_tag){
3011 if (!validate_codec_tag(s, st)) {
3013 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3014 av_log(s, AV_LOG_ERROR,
3015 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3016 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3017 ret = AVERROR_INVALIDDATA;
3021 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3024 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3025 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3026 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3029 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3030 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3031 if (!s->priv_data) {
3032 ret = AVERROR(ENOMEM);
3035 if (s->oformat->priv_class) {
3036 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3037 av_opt_set_defaults(s->priv_data);
3038 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3043 /* set muxer identification string */
3044 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3045 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3048 if(s->oformat->write_header){
3049 ret = s->oformat->write_header(s);
3054 /* init PTS generation */
3055 for(i=0;i<s->nb_streams;i++) {
3056 int64_t den = AV_NOPTS_VALUE;
3059 switch (st->codec->codec_type) {
3060 case AVMEDIA_TYPE_AUDIO:
3061 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3063 case AVMEDIA_TYPE_VIDEO:
3064 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3069 if (den != AV_NOPTS_VALUE) {
3071 ret = AVERROR_INVALIDDATA;
3074 frac_init(&st->pts, 0, 0, den);
3079 av_dict_free(options);
3088 //FIXME merge with compute_pkt_fields
3089 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3090 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3091 int num, den, frame_size, i;
3093 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3094 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3096 /* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
3097 return AVERROR(EINVAL);*/
3099 /* duration field */
3100 if (pkt->duration == 0) {
3101 compute_frame_duration(&num, &den, st, NULL, pkt);
3103 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3107 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3110 //XXX/FIXME this is a temporary hack until all encoders output pts
3111 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3113 // pkt->pts= st->cur_dts;
3114 pkt->pts= st->pts.val;
3117 //calculate dts from pts
3118 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3119 st->pts_buffer[0]= pkt->pts;
3120 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3121 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3122 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3123 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3125 pkt->dts= st->pts_buffer[0];
3128 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)){
3129 av_log(s, AV_LOG_ERROR,
3130 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3131 st->index, st->cur_dts, pkt->dts);
3132 return AVERROR(EINVAL);
3134 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3135 av_log(s, AV_LOG_ERROR, "pts < dts in stream %d\n", st->index);
3136 return AVERROR(EINVAL);
3139 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3140 st->cur_dts= pkt->dts;
3141 st->pts.val= pkt->dts;
3144 switch (st->codec->codec_type) {
3145 case AVMEDIA_TYPE_AUDIO:
3146 frame_size = get_audio_frame_size(st->codec, pkt->size);
3148 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3149 likely equal to the encoder delay, but it would be better if we
3150 had the real timestamps from the encoder */
3151 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3152 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3155 case AVMEDIA_TYPE_VIDEO:
3156 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3164 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3166 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3168 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3171 ret= s->oformat->write_packet(s, pkt);
3174 s->streams[pkt->stream_index]->nb_frames++;
3178 void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3179 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3181 AVPacketList **next_point, *this_pktl;
3183 this_pktl = av_mallocz(sizeof(AVPacketList));
3184 this_pktl->pkt= *pkt;
3185 pkt->destruct= NULL; // do not free original but only the copy
3186 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3188 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3189 next_point = &(s->streams[pkt->stream_index]->last_in_packet_buffer->next);
3191 next_point = &s->packet_buffer;
3194 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3195 while(!compare(s, &(*next_point)->pkt, pkt)){
3196 next_point= &(*next_point)->next;
3200 next_point = &(s->packet_buffer_end->next);
3203 assert(!*next_point);
3205 s->packet_buffer_end= this_pktl;
3208 this_pktl->next= *next_point;
3210 s->streams[pkt->stream_index]->last_in_packet_buffer=
3211 *next_point= this_pktl;
3214 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3216 AVStream *st = s->streams[ pkt ->stream_index];
3217 AVStream *st2= s->streams[ next->stream_index];
3218 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3222 return pkt->stream_index < next->stream_index;
3226 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
3228 int stream_count=0, noninterleaved_count=0;
3229 int64_t delta_dts_max = 0;
3233 ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3236 for(i=0; i < s->nb_streams; i++) {
3237 if (s->streams[i]->last_in_packet_buffer) {
3239 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3240 ++noninterleaved_count;
3244 if (s->nb_streams == stream_count) {
3247 for(i=0; i < s->nb_streams; i++) {
3248 if (s->streams[i]->last_in_packet_buffer) {
3250 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3251 s->streams[i]->time_base,
3253 av_rescale_q(s->packet_buffer->pkt.dts,
3254 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3256 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3259 if(s->nb_streams == stream_count+noninterleaved_count &&
3260 delta_dts_max > 20*AV_TIME_BASE) {
3261 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3265 if(stream_count && flush){
3266 pktl= s->packet_buffer;
3269 s->packet_buffer= pktl->next;
3270 if(!s->packet_buffer)
3271 s->packet_buffer_end= NULL;
3273 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3274 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3278 av_init_packet(out);
3284 * Interleave an AVPacket correctly so it can be muxed.
3285 * @param out the interleaved packet will be output here
3286 * @param in the input packet
3287 * @param flush 1 if no further packets are available as input and all
3288 * remaining packets should be output
3289 * @return 1 if a packet was output, 0 if no packet could be output,
3290 * < 0 if an error occurred
3292 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3293 if(s->oformat->interleave_packet)
3294 return s->oformat->interleave_packet(s, out, in, flush);
3296 return av_interleave_packet_per_dts(s, out, in, flush);
3299 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3300 AVStream *st= s->streams[ pkt->stream_index];
3303 //FIXME/XXX/HACK drop zero sized packets
3304 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3307 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3308 pkt->size, pkt->dts, pkt->pts);
3309 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3312 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3313 return AVERROR(EINVAL);
3317 int ret= interleave_packet(s, &opkt, pkt, 0);
3318 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3321 ret= s->oformat->write_packet(s, &opkt);
3323 s->streams[opkt.stream_index]->nb_frames++;
3325 av_free_packet(&opkt);
3330 if(url_ferror(s->pb))
3331 return url_ferror(s->pb);
3335 int av_write_trailer(AVFormatContext *s)
3341 ret= interleave_packet(s, &pkt, NULL, 1);
3342 if(ret<0) //FIXME cleanup needed for ret<0 ?
3347 ret= s->oformat->write_packet(s, &pkt);
3349 s->streams[pkt.stream_index]->nb_frames++;
3351 av_free_packet(&pkt);
3355 if(url_ferror(s->pb))
3359 if(s->oformat->write_trailer)
3360 ret = s->oformat->write_trailer(s);
3363 ret=url_ferror(s->pb);
3364 for(i=0;i<s->nb_streams;i++) {
3365 av_freep(&s->streams[i]->priv_data);
3366 av_freep(&s->streams[i]->index_entries);
3368 if (s->iformat && s->iformat->priv_class)
3369 av_opt_free(s->priv_data);
3370 av_freep(&s->priv_data);
3374 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3375 int64_t *dts, int64_t *wall)
3377 if (!s->oformat || !s->oformat->get_output_timestamp)
3378 return AVERROR(ENOSYS);
3379 s->oformat->get_output_timestamp(s, stream, dts, wall);
3383 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3386 AVProgram *program=NULL;
3389 if (idx >= ac->nb_streams) {
3390 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3394 for(i=0; i<ac->nb_programs; i++){
3395 if(ac->programs[i]->id != progid)
3397 program = ac->programs[i];
3398 for(j=0; j<program->nb_stream_indexes; j++)
3399 if(program->stream_index[j] == idx)
3402 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3405 program->stream_index = tmp;
3406 program->stream_index[program->nb_stream_indexes++] = idx;
3411 static void print_fps(double d, const char *postfix){
3412 uint64_t v= lrintf(d*100);
3413 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3414 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3415 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3418 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3420 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3421 AVDictionaryEntry *tag=NULL;
3423 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3424 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3425 if(strcmp("language", tag->key)){
3428 av_strlcpy(tmp, tag->value, sizeof(tmp));
3429 for(i=0; i<strlen(tmp); i++) if(tmp[i]==0xd) tmp[i]=' ';
3430 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tmp);
3436 /* "user interface" functions */
3437 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3440 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3441 AVStream *st = ic->streams[i];
3442 int g = av_gcd(st->time_base.num, st->time_base.den);
3443 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3444 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3445 av_log(NULL, AV_LOG_INFO, " Stream #%d.%d", index, i);
3446 /* the pid is an important information, so we display it */
3447 /* XXX: add a generic system */
3448 if (flags & AVFMT_SHOW_IDS)
3449 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3451 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3452 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3453 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3454 if (st->sample_aspect_ratio.num && // default
3455 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3456 AVRational display_aspect_ratio;
3457 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3458 st->codec->width*st->sample_aspect_ratio.num,
3459 st->codec->height*st->sample_aspect_ratio.den,
3461 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3462 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3463 display_aspect_ratio.num, display_aspect_ratio.den);
3465 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3466 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3467 print_fps(av_q2d(st->avg_frame_rate), "fps");
3468 if(st->r_frame_rate.den && st->r_frame_rate.num)
3469 print_fps(av_q2d(st->r_frame_rate), "tbr");
3470 if(st->time_base.den && st->time_base.num)
3471 print_fps(1/av_q2d(st->time_base), "tbn");
3472 if(st->codec->time_base.den && st->codec->time_base.num)
3473 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3475 if (st->disposition & AV_DISPOSITION_DEFAULT)
3476 av_log(NULL, AV_LOG_INFO, " (default)");
3477 if (st->disposition & AV_DISPOSITION_DUB)
3478 av_log(NULL, AV_LOG_INFO, " (dub)");
3479 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3480 av_log(NULL, AV_LOG_INFO, " (original)");
3481 if (st->disposition & AV_DISPOSITION_COMMENT)
3482 av_log(NULL, AV_LOG_INFO, " (comment)");
3483 if (st->disposition & AV_DISPOSITION_LYRICS)
3484 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3485 if (st->disposition & AV_DISPOSITION_KARAOKE)
3486 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3487 if (st->disposition & AV_DISPOSITION_FORCED)
3488 av_log(NULL, AV_LOG_INFO, " (forced)");
3489 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3490 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3491 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3492 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3493 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3494 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3495 av_log(NULL, AV_LOG_INFO, "\n");
3496 dump_metadata(NULL, st->metadata, " ");
3499 #if FF_API_DUMP_FORMAT
3500 void dump_format(AVFormatContext *ic,
3505 av_dump_format(ic, index, url, is_output);
3509 void av_dump_format(AVFormatContext *ic,
3515 uint8_t *printed = av_mallocz(ic->nb_streams);
3516 if (ic->nb_streams && !printed)
3519 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3520 is_output ? "Output" : "Input",
3522 is_output ? ic->oformat->name : ic->iformat->name,
3523 is_output ? "to" : "from", url);
3524 dump_metadata(NULL, ic->metadata, " ");
3526 av_log(NULL, AV_LOG_INFO, " Duration: ");
3527 if (ic->duration != AV_NOPTS_VALUE) {
3528 int hours, mins, secs, us;
3529 secs = ic->duration / AV_TIME_BASE;
3530 us = ic->duration % AV_TIME_BASE;
3535 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3536 (100 * us) / AV_TIME_BASE);
3538 av_log(NULL, AV_LOG_INFO, "N/A");
3540 if (ic->start_time != AV_NOPTS_VALUE) {
3542 av_log(NULL, AV_LOG_INFO, ", start: ");
3543 secs = ic->start_time / AV_TIME_BASE;
3544 us = abs(ic->start_time % AV_TIME_BASE);
3545 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3546 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3548 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3550 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3552 av_log(NULL, AV_LOG_INFO, "N/A");
3554 av_log(NULL, AV_LOG_INFO, "\n");
3556 for (i = 0; i < ic->nb_chapters; i++) {
3557 AVChapter *ch = ic->chapters[i];
3558 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3559 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3560 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3562 dump_metadata(NULL, ch->metadata, " ");
3564 if(ic->nb_programs) {
3565 int j, k, total = 0;
3566 for(j=0; j<ic->nb_programs; j++) {
3567 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3569 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3570 name ? name->value : "");
3571 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3572 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3573 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3574 printed[ic->programs[j]->stream_index[k]] = 1;
3576 total += ic->programs[j]->nb_stream_indexes;
3578 if (total < ic->nb_streams)
3579 av_log(NULL, AV_LOG_INFO, " No Program\n");
3581 for(i=0;i<ic->nb_streams;i++)
3583 dump_stream_format(ic, i, index, is_output);
3588 int64_t av_gettime(void)
3591 gettimeofday(&tv,NULL);
3592 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3595 uint64_t ff_ntp_time(void)
3597 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3600 #if FF_API_PARSE_DATE
3601 #include "libavutil/parseutils.h"
3603 int64_t parse_date(const char *timestr, int duration)
3606 av_parse_time(&timeval, timestr, duration);
3611 #if FF_API_FIND_INFO_TAG
3612 #include "libavutil/parseutils.h"
3614 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3616 return av_find_info_tag(arg, arg_size, tag1, info);
3620 int av_get_frame_filename(char *buf, int buf_size,
3621 const char *path, int number)
3624 char *q, buf1[20], c;
3625 int nd, len, percentd_found;
3637 while (isdigit(*p)) {
3638 nd = nd * 10 + *p++ - '0';
3641 } while (isdigit(c));
3650 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3652 if ((q - buf + len) > buf_size - 1)
3654 memcpy(q, buf1, len);
3662 if ((q - buf) < buf_size - 1)
3666 if (!percentd_found)
3675 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3679 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3681 for(i=0;i<size;i+=16) {
3688 PRINT(" %02x", buf[i+j]);
3693 for(j=0;j<len;j++) {
3695 if (c < ' ' || c > '~')
3704 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3706 hex_dump_internal(NULL, f, 0, buf, size);
3709 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3711 hex_dump_internal(avcl, NULL, level, buf, size);
3714 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3717 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3718 PRINT("stream #%d:\n", pkt->stream_index);
3719 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3720 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3721 /* DTS is _always_ valid after av_read_frame() */
3723 if (pkt->dts == AV_NOPTS_VALUE)
3726 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3727 /* PTS may not be known if B-frames are present. */
3729 if (pkt->pts == AV_NOPTS_VALUE)
3732 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3734 PRINT(" size=%d\n", pkt->size);
3737 av_hex_dump(f, pkt->data, pkt->size);
3741 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3743 AVRational tb = { 1, AV_TIME_BASE };
3744 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3748 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3750 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3754 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3756 AVRational tb = { 1, AV_TIME_BASE };
3757 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3761 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3764 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3767 void av_url_split(char *proto, int proto_size,
3768 char *authorization, int authorization_size,
3769 char *hostname, int hostname_size,
3771 char *path, int path_size,
3774 const char *p, *ls, *at, *col, *brk;
3776 if (port_ptr) *port_ptr = -1;
3777 if (proto_size > 0) proto[0] = 0;
3778 if (authorization_size > 0) authorization[0] = 0;
3779 if (hostname_size > 0) hostname[0] = 0;
3780 if (path_size > 0) path[0] = 0;
3782 /* parse protocol */
3783 if ((p = strchr(url, ':'))) {
3784 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3789 /* no protocol means plain filename */
3790 av_strlcpy(path, url, path_size);
3794 /* separate path from hostname */
3795 ls = strchr(p, '/');
3797 ls = strchr(p, '?');
3799 av_strlcpy(path, ls, path_size);
3801 ls = &p[strlen(p)]; // XXX
3803 /* the rest is hostname, use that to parse auth/port */
3805 /* authorization (user[:pass]@hostname) */
3806 if ((at = strchr(p, '@')) && at < ls) {
3807 av_strlcpy(authorization, p,
3808 FFMIN(authorization_size, at + 1 - p));
3809 p = at + 1; /* skip '@' */
3812 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3814 av_strlcpy(hostname, p + 1,
3815 FFMIN(hostname_size, brk - p));
3816 if (brk[1] == ':' && port_ptr)
3817 *port_ptr = atoi(brk + 2);
3818 } else if ((col = strchr(p, ':')) && col < ls) {
3819 av_strlcpy(hostname, p,
3820 FFMIN(col + 1 - p, hostname_size));
3821 if (port_ptr) *port_ptr = atoi(col + 1);
3823 av_strlcpy(hostname, p,
3824 FFMIN(ls + 1 - p, hostname_size));
3828 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3831 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3834 'C', 'D', 'E', 'F' };
3835 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3838 'c', 'd', 'e', 'f' };
3839 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3841 for(i = 0; i < s; i++) {
3842 buff[i * 2] = hex_table[src[i] >> 4];
3843 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3849 int ff_hex_to_data(uint8_t *data, const char *p)
3856 p += strspn(p, SPACE_CHARS);
3859 c = toupper((unsigned char) *p++);
3860 if (c >= '0' && c <= '9')
3862 else if (c >= 'A' && c <= 'F')
3877 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3878 unsigned int pts_num, unsigned int pts_den)
3881 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3882 if(new_tb.num != pts_num)
3883 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3885 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3887 if(new_tb.num <= 0 || new_tb.den <= 0) {
3888 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
3891 s->time_base = new_tb;
3892 s->pts_wrap_bits = pts_wrap_bits;
3895 int ff_url_join(char *str, int size, const char *proto,
3896 const char *authorization, const char *hostname,
3897 int port, const char *fmt, ...)
3900 struct addrinfo hints, *ai;
3905 av_strlcatf(str, size, "%s://", proto);
3906 if (authorization && authorization[0])
3907 av_strlcatf(str, size, "%s@", authorization);
3908 #if CONFIG_NETWORK && defined(AF_INET6)
3909 /* Determine if hostname is a numerical IPv6 address,
3910 * properly escape it within [] in that case. */
3911 memset(&hints, 0, sizeof(hints));
3912 hints.ai_flags = AI_NUMERICHOST;
3913 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
3914 if (ai->ai_family == AF_INET6) {
3915 av_strlcat(str, "[", size);
3916 av_strlcat(str, hostname, size);
3917 av_strlcat(str, "]", size);
3919 av_strlcat(str, hostname, size);
3924 /* Not an IPv6 address, just output the plain string. */
3925 av_strlcat(str, hostname, size);
3928 av_strlcatf(str, size, ":%d", port);
3931 int len = strlen(str);
3934 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
3940 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
3941 AVFormatContext *src)
3946 local_pkt.stream_index = dst_stream;
3947 if (pkt->pts != AV_NOPTS_VALUE)
3948 local_pkt.pts = av_rescale_q(pkt->pts,
3949 src->streams[pkt->stream_index]->time_base,
3950 dst->streams[dst_stream]->time_base);
3951 if (pkt->dts != AV_NOPTS_VALUE)
3952 local_pkt.dts = av_rescale_q(pkt->dts,
3953 src->streams[pkt->stream_index]->time_base,
3954 dst->streams[dst_stream]->time_base);
3955 return av_write_frame(dst, &local_pkt);
3958 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3961 const char *ptr = str;
3963 /* Parse key=value pairs. */
3966 char *dest = NULL, *dest_end;
3967 int key_len, dest_len = 0;
3969 /* Skip whitespace and potential commas. */
3970 while (*ptr && (isspace(*ptr) || *ptr == ','))
3977 if (!(ptr = strchr(key, '=')))
3980 key_len = ptr - key;
3982 callback_get_buf(context, key, key_len, &dest, &dest_len);
3983 dest_end = dest + dest_len - 1;
3987 while (*ptr && *ptr != '\"') {
3991 if (dest && dest < dest_end)
3995 if (dest && dest < dest_end)
4003 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4004 if (dest && dest < dest_end)
4012 int ff_find_stream_index(AVFormatContext *s, int id)
4015 for (i = 0; i < s->nb_streams; i++) {
4016 if (s->streams[i]->id == id)
4022 void ff_make_absolute_url(char *buf, int size, const char *base,
4026 /* Absolute path, relative to the current server */
4027 if (base && strstr(base, "://") && rel[0] == '/') {
4029 av_strlcpy(buf, base, size);
4030 sep = strstr(buf, "://");
4033 sep = strchr(sep, '/');
4037 av_strlcat(buf, rel, size);
4040 /* If rel actually is an absolute url, just copy it */
4041 if (!base || strstr(rel, "://") || rel[0] == '/') {
4042 av_strlcpy(buf, rel, size);
4046 av_strlcpy(buf, base, size);
4047 /* Remove the file name from the base url */
4048 sep = strrchr(buf, '/');
4053 while (av_strstart(rel, "../", NULL) && sep) {
4054 /* Remove the path delimiter at the end */
4056 sep = strrchr(buf, '/');
4057 /* If the next directory name to pop off is "..", break here */
4058 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4059 /* Readd the slash we just removed */
4060 av_strlcat(buf, "/", size);
4063 /* Cut off the directory name */
4070 av_strlcat(buf, rel, size);
4073 int64_t ff_iso8601_to_unix_time(const char *datestr)
4076 struct tm time = {0};
4077 strptime(datestr, "%Y - %m - %dT%T", &time);
4078 return mktime(&time);
4080 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4081 "the date string.\n");
4086 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4089 if (ofmt->query_codec)
4090 return ofmt->query_codec(codec_id, std_compliance);
4091 else if (ofmt->codec_tag)
4092 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4093 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4094 codec_id == ofmt->subtitle_codec)
4097 return AVERROR_PATCHWELCOME;