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"
36 #include "libavutil/parseutils.h"
38 #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 (!av_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 (!av_strncasecmp(name, names, len))
198 return !av_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, nodat = 0, 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;
324 while ((fmt1 = av_iformat_next(fmt1))) {
325 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
328 if (fmt1->read_probe) {
329 score = fmt1->read_probe(&lpd);
330 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
331 score = FFMAX(score, nodat ? AVPROBE_SCORE_MAX/4-1 : 1);
332 } else if (fmt1->extensions) {
333 if (av_match_ext(lpd.filename, fmt1->extensions)) {
337 if (score > score_max) {
340 }else if (score == score_max)
343 *score_ret= score_max;
348 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
351 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
352 if(score_ret > *score_max){
353 *score_max= score_ret;
359 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
361 return av_probe_input_format2(pd, is_opened, &score);
364 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
366 static const struct {
367 const char *name; enum CodecID id; enum AVMediaType type;
369 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
370 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
371 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
372 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
373 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
374 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
375 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
376 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
377 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
381 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
385 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
386 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
387 for (i = 0; fmt_id_type[i].name; i++) {
388 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
389 st->codec->codec_id = fmt_id_type[i].id;
390 st->codec->codec_type = fmt_id_type[i].type;
398 /************************************************************/
399 /* input media file */
401 #if FF_API_FORMAT_PARAMETERS
402 static AVDictionary *convert_format_parameters(AVFormatParameters *ap)
405 AVDictionary *opts = NULL;
410 AV_NOWARN_DEPRECATED(
411 if (ap->time_base.num) {
412 snprintf(buf, sizeof(buf), "%d/%d", ap->time_base.den, ap->time_base.num);
413 av_dict_set(&opts, "framerate", buf, 0);
415 if (ap->sample_rate) {
416 snprintf(buf, sizeof(buf), "%d", ap->sample_rate);
417 av_dict_set(&opts, "sample_rate", buf, 0);
420 snprintf(buf, sizeof(buf), "%d", ap->channels);
421 av_dict_set(&opts, "channels", buf, 0);
423 if (ap->width || ap->height) {
424 snprintf(buf, sizeof(buf), "%dx%d", ap->width, ap->height);
425 av_dict_set(&opts, "video_size", buf, 0);
427 if (ap->pix_fmt != PIX_FMT_NONE) {
428 av_dict_set(&opts, "pixel_format", av_get_pix_fmt_name(ap->pix_fmt), 0);
431 snprintf(buf, sizeof(buf), "%d", ap->channel);
432 av_dict_set(&opts, "channel", buf, 0);
435 av_dict_set(&opts, "standard", ap->standard, 0);
437 if (ap->mpeg2ts_compute_pcr) {
438 av_dict_set(&opts, "mpeg2ts_compute_pcr", "1", 0);
440 if (ap->initial_pause) {
441 av_dict_set(&opts, "initial_pause", "1", 0);
448 * Open a media file from an IO stream. 'fmt' must be specified.
450 int av_open_input_stream(AVFormatContext **ic_ptr,
451 AVIOContext *pb, const char *filename,
452 AVInputFormat *fmt, AVFormatParameters *ap)
457 AVFormatParameters default_ap;
461 memset(ap, 0, sizeof(default_ap));
463 opts = convert_format_parameters(ap);
465 AV_NOWARN_DEPRECATED(
466 if(!ap->prealloced_context)
467 *ic_ptr = ic = avformat_alloc_context();
472 err = AVERROR(ENOMEM);
475 if (pb && fmt && fmt->flags & AVFMT_NOFILE)
476 av_log(ic, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
477 "will be ignored with AVFMT_NOFILE format.\n");
481 if ((err = avformat_open_input(&ic, filename, fmt, &opts)) < 0)
483 ic->pb = ic->pb ? ic->pb : pb; // don't leak custom pb if it wasn't set above
492 int av_demuxer_open(AVFormatContext *ic, AVFormatParameters *ap){
495 if (ic->iformat->read_header) {
496 err = ic->iformat->read_header(ic, ap);
501 if (ic->pb && !ic->data_offset)
502 ic->data_offset = avio_tell(ic->pb);
508 /** size of probe buffer, for guessing file type from file contents */
509 #define PROBE_BUF_MIN 2048
510 #define PROBE_BUF_MAX (1<<20)
512 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
513 const char *filename, void *logctx,
514 unsigned int offset, unsigned int max_probe_size)
516 AVProbeData pd = { filename ? filename : "", NULL, -offset };
517 unsigned char *buf = NULL;
518 int ret = 0, probe_size;
520 if (!max_probe_size) {
521 max_probe_size = PROBE_BUF_MAX;
522 } else if (max_probe_size > PROBE_BUF_MAX) {
523 max_probe_size = PROBE_BUF_MAX;
524 } else if (max_probe_size < PROBE_BUF_MIN) {
525 return AVERROR(EINVAL);
528 if (offset >= max_probe_size) {
529 return AVERROR(EINVAL);
532 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
533 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
534 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
535 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
538 if (probe_size < offset) {
542 /* read probe data */
543 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
546 return AVERROR(ENOMEM);
549 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
550 /* fail if error was not end of file, otherwise, lower score */
551 if (ret != AVERROR_EOF) {
556 ret = 0; /* error was end of file, nothing read */
559 pd.buf = &buf[offset];
561 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
563 /* guess file format */
564 *fmt = av_probe_input_format2(&pd, 1, &score);
566 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
567 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
569 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
575 return AVERROR_INVALIDDATA;
578 /* rewind. reuse probe buffer to avoid seeking */
579 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
585 #if FF_API_FORMAT_PARAMETERS
586 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
589 AVFormatParameters *ap)
592 AVDictionary *opts = convert_format_parameters(ap);
594 AV_NOWARN_DEPRECATED(
595 if (!ap || !ap->prealloced_context)
599 err = avformat_open_input(ic_ptr, filename, fmt, &opts);
606 /* open input file and probe the format if necessary */
607 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
610 AVProbeData pd = {filename, NULL, 0};
612 if(s->iformat && !strlen(filename))
616 s->flags |= AVFMT_FLAG_CUSTOM_IO;
618 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
619 else if (s->iformat->flags & AVFMT_NOFILE)
620 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
621 "will be ignored with AVFMT_NOFILE format.\n");
625 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
626 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
629 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ,
630 &s->interrupt_callback, options)) < 0)
634 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
637 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
639 AVFormatContext *s = *ps;
641 AVFormatParameters ap = { { 0 } };
642 AVDictionary *tmp = NULL;
644 if (!s && !(s = avformat_alloc_context()))
645 return AVERROR(ENOMEM);
650 av_dict_copy(&tmp, *options, 0);
652 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
655 if ((ret = init_input(s, filename, &tmp)) < 0)
658 /* check filename in case an image number is expected */
659 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
660 if (!av_filename_number_test(filename)) {
661 ret = AVERROR(EINVAL);
666 s->duration = s->start_time = AV_NOPTS_VALUE;
667 av_strlcpy(s->filename, filename, sizeof(s->filename));
669 /* allocate private data */
670 if (s->iformat->priv_data_size > 0) {
671 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
672 ret = AVERROR(ENOMEM);
675 if (s->iformat->priv_class) {
676 *(const AVClass**)s->priv_data = s->iformat->priv_class;
677 av_opt_set_defaults(s->priv_data);
678 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
683 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
685 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC);
687 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
688 if ((ret = s->iformat->read_header(s, &ap)) < 0)
691 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
692 s->data_offset = avio_tell(s->pb);
694 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
697 av_dict_free(options);
705 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
707 avformat_free_context(s);
712 /*******************************************************/
714 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
715 AVPacketList **plast_pktl){
716 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
721 (*plast_pktl)->next = pktl;
723 *packet_buffer = pktl;
725 /* add the packet in the buffered packet list */
731 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
737 AVPacketList *pktl = s->raw_packet_buffer;
741 if(s->streams[pkt->stream_index]->request_probe <= 0){
742 s->raw_packet_buffer = pktl->next;
743 s->raw_packet_buffer_remaining_size += pkt->size;
750 ret= s->iformat->read_packet(s, pkt);
752 if (!pktl || ret == AVERROR(EAGAIN))
754 for (i = 0; i < s->nb_streams; i++)
755 if(s->streams[i]->request_probe > 0)
756 s->streams[i]->request_probe = -1;
760 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
761 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
762 av_log(s, AV_LOG_WARNING,
763 "Dropped corrupted packet (stream = %d)\n",
769 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
770 av_packet_merge_side_data(pkt);
772 if(pkt->stream_index >= (unsigned)s->nb_streams){
773 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
777 st= s->streams[pkt->stream_index];
779 switch(st->codec->codec_type){
780 case AVMEDIA_TYPE_VIDEO:
781 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
783 case AVMEDIA_TYPE_AUDIO:
784 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
786 case AVMEDIA_TYPE_SUBTITLE:
787 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
791 if(!pktl && st->request_probe <= 0)
794 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
795 s->raw_packet_buffer_remaining_size -= pkt->size;
797 if(st->request_probe>0){
798 AVProbeData *pd = &st->probe_data;
800 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
803 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
804 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
805 pd->buf_size += pkt->size;
806 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
808 end= s->raw_packet_buffer_remaining_size <= 0
809 || st->probe_packets<=0;
811 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
812 int score= set_codec_from_probe_data(s, st, pd);
813 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
817 st->request_probe= -1;
818 if(st->codec->codec_id != CODEC_ID_NONE){
819 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
821 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
828 /**********************************************************/
831 * Get the number of samples of an audio frame. Return -1 on error.
833 static int get_audio_frame_size(AVCodecContext *enc, int size)
837 if(enc->codec_id == CODEC_ID_VORBIS)
840 if (enc->frame_size <= 1) {
841 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
843 if (bits_per_sample) {
844 if (enc->channels == 0)
846 frame_size = (size << 3) / (bits_per_sample * enc->channels);
848 /* used for example by ADPCM codecs */
849 if (enc->bit_rate == 0)
851 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
854 frame_size = enc->frame_size;
861 * Return the frame duration in seconds. Return 0 if not available.
863 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
864 AVCodecParserContext *pc, AVPacket *pkt)
870 switch(st->codec->codec_type) {
871 case AVMEDIA_TYPE_VIDEO:
872 if (st->r_frame_rate.num && !pc) {
873 *pnum = st->r_frame_rate.den;
874 *pden = st->r_frame_rate.num;
875 } else if(st->time_base.num*1000LL > st->time_base.den) {
876 *pnum = st->time_base.num;
877 *pden = st->time_base.den;
878 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
879 *pnum = st->codec->time_base.num;
880 *pden = st->codec->time_base.den;
881 if (pc && pc->repeat_pict) {
882 *pnum = (*pnum) * (1 + pc->repeat_pict);
884 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
885 //Thus if we have no parser in such case leave duration undefined.
886 if(st->codec->ticks_per_frame>1 && !pc){
891 case AVMEDIA_TYPE_AUDIO:
892 frame_size = get_audio_frame_size(st->codec, pkt->size);
893 if (frame_size <= 0 || st->codec->sample_rate <= 0)
896 *pden = st->codec->sample_rate;
903 static int is_intra_only(AVCodecContext *enc){
904 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
906 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
907 switch(enc->codec_id){
909 case CODEC_ID_MJPEGB:
911 case CODEC_ID_PRORES:
912 case CODEC_ID_RAWVIDEO:
913 case CODEC_ID_DVVIDEO:
914 case CODEC_ID_HUFFYUV:
915 case CODEC_ID_FFVHUFF:
920 case CODEC_ID_JPEG2000:
928 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
929 int64_t dts, int64_t pts)
931 AVStream *st= s->streams[stream_index];
932 AVPacketList *pktl= s->packet_buffer;
934 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
937 st->first_dts= dts - st->cur_dts;
940 for(; pktl; pktl= pktl->next){
941 if(pktl->pkt.stream_index != stream_index)
943 //FIXME think more about this check
944 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
945 pktl->pkt.pts += st->first_dts;
947 if(pktl->pkt.dts != AV_NOPTS_VALUE)
948 pktl->pkt.dts += st->first_dts;
950 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
951 st->start_time= pktl->pkt.pts;
953 if (st->start_time == AV_NOPTS_VALUE)
954 st->start_time = pts;
957 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
959 AVPacketList *pktl= s->packet_buffer;
962 if(st->first_dts != AV_NOPTS_VALUE){
963 cur_dts= st->first_dts;
964 for(; pktl; pktl= pktl->next){
965 if(pktl->pkt.stream_index == pkt->stream_index){
966 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
968 cur_dts -= pkt->duration;
971 pktl= s->packet_buffer;
972 st->first_dts = cur_dts;
973 }else if(st->cur_dts)
976 for(; pktl; pktl= pktl->next){
977 if(pktl->pkt.stream_index != pkt->stream_index)
979 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
980 && !pktl->pkt.duration){
981 pktl->pkt.dts= cur_dts;
982 if(!st->codec->has_b_frames)
983 pktl->pkt.pts= cur_dts;
984 cur_dts += pkt->duration;
985 pktl->pkt.duration= pkt->duration;
989 if(st->first_dts == AV_NOPTS_VALUE)
990 st->cur_dts= cur_dts;
993 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
994 AVCodecParserContext *pc, AVPacket *pkt)
996 int num, den, presentation_delayed, delay, i;
999 if (s->flags & AVFMT_FLAG_NOFILLIN)
1002 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1003 pkt->dts= AV_NOPTS_VALUE;
1005 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1006 //FIXME Set low_delay = 0 when has_b_frames = 1
1007 st->codec->has_b_frames = 1;
1009 /* do we have a video B-frame ? */
1010 delay= st->codec->has_b_frames;
1011 presentation_delayed = 0;
1013 /* XXX: need has_b_frame, but cannot get it if the codec is
1016 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1017 presentation_delayed = 1;
1019 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > pkt->pts && st->pts_wrap_bits<63){
1020 pkt->dts -= 1LL<<st->pts_wrap_bits;
1023 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1024 // we take the conservative approach and discard both
1025 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1026 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1027 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1028 pkt->dts= AV_NOPTS_VALUE;
1031 if (pkt->duration == 0) {
1032 compute_frame_duration(&num, &den, st, pc, pkt);
1034 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1036 if(pkt->duration != 0 && s->packet_buffer)
1037 update_initial_durations(s, st, pkt);
1041 /* correct timestamps with byte offset if demuxers only have timestamps
1042 on packet boundaries */
1043 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1044 /* this will estimate bitrate based on this frame's duration and size */
1045 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1046 if(pkt->pts != AV_NOPTS_VALUE)
1048 if(pkt->dts != AV_NOPTS_VALUE)
1052 if (pc && pc->dts_sync_point >= 0) {
1053 // we have synchronization info from the parser
1054 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1056 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1057 if (pkt->dts != AV_NOPTS_VALUE) {
1058 // got DTS from the stream, update reference timestamp
1059 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1060 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1061 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1062 // compute DTS based on reference timestamp
1063 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1064 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1066 if (pc->dts_sync_point > 0)
1067 st->reference_dts = pkt->dts; // new reference
1071 /* This may be redundant, but it should not hurt. */
1072 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1073 presentation_delayed = 1;
1075 // 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);
1076 /* interpolate PTS and DTS if they are not present */
1077 //We skip H264 currently because delay and has_b_frames are not reliably set
1078 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1079 if (presentation_delayed) {
1080 /* DTS = decompression timestamp */
1081 /* PTS = presentation timestamp */
1082 if (pkt->dts == AV_NOPTS_VALUE)
1083 pkt->dts = st->last_IP_pts;
1084 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1085 if (pkt->dts == AV_NOPTS_VALUE)
1086 pkt->dts = st->cur_dts;
1088 /* this is tricky: the dts must be incremented by the duration
1089 of the frame we are displaying, i.e. the last I- or P-frame */
1090 if (st->last_IP_duration == 0)
1091 st->last_IP_duration = pkt->duration;
1092 if(pkt->dts != AV_NOPTS_VALUE)
1093 st->cur_dts = pkt->dts + st->last_IP_duration;
1094 st->last_IP_duration = pkt->duration;
1095 st->last_IP_pts= pkt->pts;
1096 /* cannot compute PTS if not present (we can compute it only
1097 by knowing the future */
1098 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
1099 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
1100 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
1101 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1102 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
1103 pkt->pts += pkt->duration;
1104 // 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);
1108 /* presentation is not delayed : PTS and DTS are the same */
1109 if(pkt->pts == AV_NOPTS_VALUE)
1110 pkt->pts = pkt->dts;
1111 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1112 if(pkt->pts == AV_NOPTS_VALUE)
1113 pkt->pts = st->cur_dts;
1114 pkt->dts = pkt->pts;
1115 if(pkt->pts != AV_NOPTS_VALUE)
1116 st->cur_dts = pkt->pts + pkt->duration;
1120 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1121 st->pts_buffer[0]= pkt->pts;
1122 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1123 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1124 if(pkt->dts == AV_NOPTS_VALUE)
1125 pkt->dts= st->pts_buffer[0];
1126 if(st->codec->codec_id == CODEC_ID_H264){ //we skiped it above so we try here
1127 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1129 if(pkt->dts > st->cur_dts)
1130 st->cur_dts = pkt->dts;
1133 // 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);
1136 if(is_intra_only(st->codec))
1137 pkt->flags |= AV_PKT_FLAG_KEY;
1140 /* keyframe computation */
1141 if (pc->key_frame == 1)
1142 pkt->flags |= AV_PKT_FLAG_KEY;
1143 else if (pc->key_frame == -1 && pc->pict_type == AV_PICTURE_TYPE_I)
1144 pkt->flags |= AV_PKT_FLAG_KEY;
1147 pkt->convergence_duration = pc->convergence_duration;
1151 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1156 av_init_packet(pkt);
1159 /* select current input stream component */
1162 if (!st->need_parsing || !st->parser) {
1163 /* no parsing needed: we just output the packet as is */
1164 /* raw data support */
1166 st->cur_pkt.data= NULL;
1167 st->cur_pkt.side_data_elems = 0;
1168 st->cur_pkt.side_data = NULL;
1169 compute_pkt_fields(s, st, NULL, pkt);
1171 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1172 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1173 ff_reduce_index(s, st->index);
1174 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1177 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1178 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1179 st->cur_ptr, st->cur_len,
1180 st->cur_pkt.pts, st->cur_pkt.dts,
1182 st->cur_pkt.pts = AV_NOPTS_VALUE;
1183 st->cur_pkt.dts = AV_NOPTS_VALUE;
1184 /* increment read pointer */
1188 /* return packet if any */
1192 pkt->stream_index = st->index;
1193 pkt->pts = st->parser->pts;
1194 pkt->dts = st->parser->dts;
1195 pkt->pos = st->parser->pos;
1196 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1198 pkt->destruct= st->cur_pkt.destruct;
1199 st->cur_pkt.destruct= NULL;
1200 st->cur_pkt.data = NULL;
1201 assert(st->cur_len == 0);
1203 pkt->destruct = NULL;
1205 compute_pkt_fields(s, st, st->parser, pkt);
1207 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1208 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->pos : st->parser->frame_offset;
1209 ff_reduce_index(s, st->index);
1210 av_add_index_entry(st, pos, pkt->dts,
1211 0, 0, AVINDEX_KEYFRAME);
1218 av_free_packet(&st->cur_pkt);
1223 /* read next packet */
1224 ret = av_read_packet(s, &cur_pkt);
1226 if (ret == AVERROR(EAGAIN))
1228 /* return the last frames, if any */
1229 for(i = 0; i < s->nb_streams; i++) {
1231 if (st->parser && st->need_parsing) {
1232 av_parser_parse2(st->parser, st->codec,
1233 &pkt->data, &pkt->size,
1235 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1241 /* no more packets: really terminate parsing */
1244 st = s->streams[cur_pkt.stream_index];
1245 st->cur_pkt= cur_pkt;
1247 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1248 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1249 st->cur_pkt.pts < st->cur_pkt.dts){
1250 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1251 st->cur_pkt.stream_index,
1255 // av_free_packet(&st->cur_pkt);
1259 if(s->debug & FF_FDEBUG_TS)
1260 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1261 st->cur_pkt.stream_index,
1265 st->cur_pkt.duration,
1269 st->cur_ptr = st->cur_pkt.data;
1270 st->cur_len = st->cur_pkt.size;
1271 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1272 st->parser = av_parser_init(st->codec->codec_id);
1274 av_log(s, AV_LOG_WARNING, "parser not found for codec "
1275 "%s, packets or times may be invalid.\n",
1276 avcodec_get_name(st->codec->codec_id));
1277 /* no parser available: just output the raw packets */
1278 st->need_parsing = AVSTREAM_PARSE_NONE;
1279 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1280 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1281 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1282 st->parser->flags |= PARSER_FLAG_ONCE;
1287 if(s->debug & FF_FDEBUG_TS)
1288 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1299 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1303 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
1306 pktl = s->packet_buffer;
1308 AVPacket *next_pkt= &pktl->pkt;
1310 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
1311 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1312 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
1313 if( pktl->pkt.stream_index == next_pkt->stream_index
1314 && (0 > av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)))
1315 && av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1316 next_pkt->pts= pktl->pkt.dts;
1320 pktl = s->packet_buffer;
1323 if( next_pkt->pts != AV_NOPTS_VALUE
1324 || next_pkt->dts == AV_NOPTS_VALUE
1326 /* read packet from packet buffer, if there is data */
1328 s->packet_buffer = pktl->next;
1334 int ret= read_frame_internal(s, pkt);
1336 if(pktl && ret != AVERROR(EAGAIN)){
1343 if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1344 &s->packet_buffer_end)) < 0)
1345 return AVERROR(ENOMEM);
1347 assert(!s->packet_buffer);
1348 return read_frame_internal(s, pkt);
1353 /* XXX: suppress the packet queue */
1354 static void flush_packet_queue(AVFormatContext *s)
1359 pktl = s->packet_buffer;
1362 s->packet_buffer = pktl->next;
1363 av_free_packet(&pktl->pkt);
1366 while(s->raw_packet_buffer){
1367 pktl = s->raw_packet_buffer;
1368 s->raw_packet_buffer = pktl->next;
1369 av_free_packet(&pktl->pkt);
1372 s->packet_buffer_end=
1373 s->raw_packet_buffer_end= NULL;
1374 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1377 /*******************************************************/
1380 int av_find_default_stream_index(AVFormatContext *s)
1382 int first_audio_index = -1;
1386 if (s->nb_streams <= 0)
1388 for(i = 0; i < s->nb_streams; i++) {
1390 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1393 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1394 first_audio_index = i;
1396 return first_audio_index >= 0 ? first_audio_index : 0;
1400 * Flush the frame reader.
1402 void ff_read_frame_flush(AVFormatContext *s)
1407 flush_packet_queue(s);
1411 /* for each stream, reset read state */
1412 for(i = 0; i < s->nb_streams; i++) {
1416 av_parser_close(st->parser);
1418 av_free_packet(&st->cur_pkt);
1420 st->last_IP_pts = AV_NOPTS_VALUE;
1421 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = 0;
1422 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1423 st->reference_dts = AV_NOPTS_VALUE;
1428 st->probe_packets = MAX_PROBE_PACKETS;
1430 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1431 st->pts_buffer[j]= AV_NOPTS_VALUE;
1435 #if FF_API_SEEK_PUBLIC
1436 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1438 ff_update_cur_dts(s, ref_st, timestamp);
1442 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1446 for(i = 0; i < s->nb_streams; i++) {
1447 AVStream *st = s->streams[i];
1449 st->cur_dts = av_rescale(timestamp,
1450 st->time_base.den * (int64_t)ref_st->time_base.num,
1451 st->time_base.num * (int64_t)ref_st->time_base.den);
1455 void ff_reduce_index(AVFormatContext *s, int stream_index)
1457 AVStream *st= s->streams[stream_index];
1458 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1460 if((unsigned)st->nb_index_entries >= max_entries){
1462 for(i=0; 2*i<st->nb_index_entries; i++)
1463 st->index_entries[i]= st->index_entries[2*i];
1464 st->nb_index_entries= i;
1468 int ff_add_index_entry(AVIndexEntry **index_entries,
1469 int *nb_index_entries,
1470 unsigned int *index_entries_allocated_size,
1471 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1473 AVIndexEntry *entries, *ie;
1476 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1479 entries = av_fast_realloc(*index_entries,
1480 index_entries_allocated_size,
1481 (*nb_index_entries + 1) *
1482 sizeof(AVIndexEntry));
1486 *index_entries= entries;
1488 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1491 index= (*nb_index_entries)++;
1492 ie= &entries[index];
1493 assert(index==0 || ie[-1].timestamp < timestamp);
1495 ie= &entries[index];
1496 if(ie->timestamp != timestamp){
1497 if(ie->timestamp <= timestamp)
1499 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1500 (*nb_index_entries)++;
1501 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1502 distance= ie->min_distance;
1506 ie->timestamp = timestamp;
1507 ie->min_distance= distance;
1514 int av_add_index_entry(AVStream *st,
1515 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1517 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1518 &st->index_entries_allocated_size, pos,
1519 timestamp, size, distance, flags);
1522 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1523 int64_t wanted_timestamp, int flags)
1531 //optimize appending index entries at the end
1532 if(b && entries[b-1].timestamp < wanted_timestamp)
1537 timestamp = entries[m].timestamp;
1538 if(timestamp >= wanted_timestamp)
1540 if(timestamp <= wanted_timestamp)
1543 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1545 if(!(flags & AVSEEK_FLAG_ANY)){
1546 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1547 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1556 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1559 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1560 wanted_timestamp, flags);
1563 #if FF_API_SEEK_PUBLIC
1564 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1565 return ff_seek_frame_binary(s, stream_index, target_ts, flags);
1569 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1571 AVInputFormat *avif= s->iformat;
1572 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1573 int64_t ts_min, ts_max, ts;
1578 if (stream_index < 0)
1581 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1584 ts_min= AV_NOPTS_VALUE;
1585 pos_limit= -1; //gcc falsely says it may be uninitialized
1587 st= s->streams[stream_index];
1588 if(st->index_entries){
1591 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()
1592 index= FFMAX(index, 0);
1593 e= &st->index_entries[index];
1595 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1597 ts_min= e->timestamp;
1598 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1604 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1605 assert(index < st->nb_index_entries);
1607 e= &st->index_entries[index];
1608 assert(e->timestamp >= target_ts);
1610 ts_max= e->timestamp;
1611 pos_limit= pos_max - e->min_distance;
1612 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1613 pos_max,pos_limit, ts_max);
1617 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1622 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1625 ff_read_frame_flush(s);
1626 ff_update_cur_dts(s, st, ts);
1631 #if FF_API_SEEK_PUBLIC
1632 int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1633 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1634 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1635 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1637 return ff_gen_search(s, stream_index, target_ts, pos_min, pos_max,
1638 pos_limit, ts_min, ts_max, flags, ts_ret,
1643 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1644 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1645 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1646 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1649 int64_t start_pos, filesize;
1652 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1654 if(ts_min == AV_NOPTS_VALUE){
1655 pos_min = s->data_offset;
1656 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1657 if (ts_min == AV_NOPTS_VALUE)
1661 if(ts_min >= target_ts){
1666 if(ts_max == AV_NOPTS_VALUE){
1668 filesize = avio_size(s->pb);
1669 pos_max = filesize - 1;
1672 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1674 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1675 if (ts_max == AV_NOPTS_VALUE)
1679 int64_t tmp_pos= pos_max + 1;
1680 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1681 if(tmp_ts == AV_NOPTS_VALUE)
1685 if(tmp_pos >= filesize)
1691 if(ts_max <= target_ts){
1696 if(ts_min > ts_max){
1698 }else if(ts_min == ts_max){
1703 while (pos_min < pos_limit) {
1704 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1705 pos_min, pos_max, ts_min, ts_max);
1706 assert(pos_limit <= pos_max);
1709 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1710 // interpolate position (better than dichotomy)
1711 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1712 + pos_min - approximate_keyframe_distance;
1713 }else if(no_change==1){
1714 // bisection, if interpolation failed to change min or max pos last time
1715 pos = (pos_min + pos_limit)>>1;
1717 /* linear search if bisection failed, can only happen if there
1718 are very few or no keyframes between min/max */
1723 else if(pos > pos_limit)
1727 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1732 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1733 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1734 pos_limit, start_pos, no_change);
1735 if(ts == AV_NOPTS_VALUE){
1736 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1739 assert(ts != AV_NOPTS_VALUE);
1740 if (target_ts <= ts) {
1741 pos_limit = start_pos - 1;
1745 if (target_ts >= ts) {
1751 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1752 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1755 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1757 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1758 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1759 pos, ts_min, target_ts, ts_max);
1765 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1766 int64_t pos_min, pos_max;
1770 if (stream_index < 0)
1773 st= s->streams[stream_index];
1776 pos_min = s->data_offset;
1777 pos_max = avio_size(s->pb) - 1;
1779 if (pos < pos_min) pos= pos_min;
1780 else if(pos > pos_max) pos= pos_max;
1782 avio_seek(s->pb, pos, SEEK_SET);
1785 av_update_cur_dts(s, st, ts);
1790 static int seek_frame_generic(AVFormatContext *s,
1791 int stream_index, int64_t timestamp, int flags)
1798 st = s->streams[stream_index];
1800 index = av_index_search_timestamp(st, timestamp, flags);
1802 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1805 if(index < 0 || index==st->nb_index_entries-1){
1809 if(st->nb_index_entries){
1810 assert(st->index_entries);
1811 ie= &st->index_entries[st->nb_index_entries-1];
1812 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1814 ff_update_cur_dts(s, st, ie->timestamp);
1816 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1822 read_status = av_read_frame(s, &pkt);
1823 } while (read_status == AVERROR(EAGAIN));
1824 if (read_status < 0)
1826 av_free_packet(&pkt);
1827 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1828 if(pkt.flags & AV_PKT_FLAG_KEY)
1830 if(nonkey++ > 1000 && st->codec->codec_id != CODEC_ID_CDGRAPHICS){
1831 av_log(s, AV_LOG_ERROR,"seek_frame_generic failed as this stream seems to contain no keyframes after the target timestamp, %d non keyframes found\n", nonkey);
1836 index = av_index_search_timestamp(st, timestamp, flags);
1841 ff_read_frame_flush(s);
1842 AV_NOWARN_DEPRECATED(
1843 if (s->iformat->read_seek){
1844 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1848 ie = &st->index_entries[index];
1849 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1851 ff_update_cur_dts(s, st, ie->timestamp);
1856 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1861 if (flags & AVSEEK_FLAG_BYTE) {
1862 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1864 ff_read_frame_flush(s);
1865 return seek_frame_byte(s, stream_index, timestamp, flags);
1868 if(stream_index < 0){
1869 stream_index= av_find_default_stream_index(s);
1870 if(stream_index < 0)
1873 st= s->streams[stream_index];
1874 /* timestamp for default must be expressed in AV_TIME_BASE units */
1875 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1878 /* first, we try the format specific seek */
1879 AV_NOWARN_DEPRECATED(
1880 if (s->iformat->read_seek) {
1881 ff_read_frame_flush(s);
1882 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1890 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1891 ff_read_frame_flush(s);
1892 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1893 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1894 ff_read_frame_flush(s);
1895 return seek_frame_generic(s, stream_index, timestamp, flags);
1901 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1903 if(min_ts > ts || max_ts < ts)
1906 if (s->iformat->read_seek2) {
1907 ff_read_frame_flush(s);
1908 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1911 if(s->iformat->read_timestamp){
1912 //try to seek via read_timestamp()
1915 //Fallback to old API if new is not implemented but old is
1916 //Note the old has somewat different sematics
1917 AV_NOWARN_DEPRECATED(
1918 if(s->iformat->read_seek || 1)
1919 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1922 // try some generic seek like seek_frame_generic() but with new ts semantics
1925 /*******************************************************/
1928 * Return TRUE if the stream has accurate duration in any stream.
1930 * @return TRUE if the stream has accurate duration for at least one component.
1932 static int has_duration(AVFormatContext *ic)
1936 if(ic->duration != AV_NOPTS_VALUE)
1939 for(i = 0;i < ic->nb_streams; i++) {
1940 st = ic->streams[i];
1941 if (st->duration != AV_NOPTS_VALUE)
1948 * Estimate the stream timings from the one of each components.
1950 * Also computes the global bitrate if possible.
1952 static void update_stream_timings(AVFormatContext *ic)
1954 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1955 int64_t duration, duration1, filesize;
1959 start_time = INT64_MAX;
1960 start_time_text = INT64_MAX;
1961 end_time = INT64_MIN;
1962 duration = INT64_MIN;
1963 for(i = 0;i < ic->nb_streams; i++) {
1964 st = ic->streams[i];
1965 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1966 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1967 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1968 if (start_time1 < start_time_text)
1969 start_time_text = start_time1;
1971 start_time = FFMIN(start_time, start_time1);
1972 if (st->duration != AV_NOPTS_VALUE) {
1973 end_time1 = start_time1
1974 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1975 end_time = FFMAX(end_time, end_time1);
1978 if (st->duration != AV_NOPTS_VALUE) {
1979 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1980 duration = FFMAX(duration, duration1);
1983 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
1984 start_time = start_time_text;
1985 if (start_time != INT64_MAX) {
1986 ic->start_time = start_time;
1987 if (end_time != INT64_MIN)
1988 duration = FFMAX(duration, end_time - start_time);
1990 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
1991 ic->duration = duration;
1993 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
1994 /* compute the bitrate */
1995 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
1996 (double)ic->duration;
2000 static void fill_all_stream_timings(AVFormatContext *ic)
2005 update_stream_timings(ic);
2006 for(i = 0;i < ic->nb_streams; i++) {
2007 st = ic->streams[i];
2008 if (st->start_time == AV_NOPTS_VALUE) {
2009 if(ic->start_time != AV_NOPTS_VALUE)
2010 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2011 if(ic->duration != AV_NOPTS_VALUE)
2012 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2017 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2019 int64_t filesize, duration;
2023 /* if bit_rate is already set, we believe it */
2024 if (ic->bit_rate <= 0) {
2026 for(i=0;i<ic->nb_streams;i++) {
2027 st = ic->streams[i];
2028 if (st->codec->bit_rate > 0)
2029 bit_rate += st->codec->bit_rate;
2031 ic->bit_rate = bit_rate;
2034 /* if duration is already set, we believe it */
2035 if (ic->duration == AV_NOPTS_VALUE &&
2036 ic->bit_rate != 0) {
2037 filesize = ic->pb ? avio_size(ic->pb) : 0;
2039 for(i = 0; i < ic->nb_streams; i++) {
2040 st = ic->streams[i];
2041 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2042 if (st->duration == AV_NOPTS_VALUE)
2043 st->duration = duration;
2049 #define DURATION_MAX_READ_SIZE 250000
2050 #define DURATION_MAX_RETRY 3
2052 /* only usable for MPEG-PS streams */
2053 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2055 AVPacket pkt1, *pkt = &pkt1;
2057 int read_size, i, ret;
2059 int64_t filesize, offset, duration;
2064 /* flush packet queue */
2065 flush_packet_queue(ic);
2067 for (i=0; i<ic->nb_streams; i++) {
2068 st = ic->streams[i];
2069 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2070 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2073 av_parser_close(st->parser);
2075 av_free_packet(&st->cur_pkt);
2079 /* estimate the end time (duration) */
2080 /* XXX: may need to support wrapping */
2081 filesize = ic->pb ? avio_size(ic->pb) : 0;
2082 end_time = AV_NOPTS_VALUE;
2084 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2088 avio_seek(ic->pb, offset, SEEK_SET);
2091 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2095 ret = av_read_packet(ic, pkt);
2096 } while(ret == AVERROR(EAGAIN));
2099 read_size += pkt->size;
2100 st = ic->streams[pkt->stream_index];
2101 if (pkt->pts != AV_NOPTS_VALUE &&
2102 (st->start_time != AV_NOPTS_VALUE ||
2103 st->first_dts != AV_NOPTS_VALUE)) {
2104 duration = end_time = pkt->pts;
2105 if (st->start_time != AV_NOPTS_VALUE)
2106 duration -= st->start_time;
2108 duration -= st->first_dts;
2110 duration += 1LL<<st->pts_wrap_bits;
2112 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2113 st->duration = duration;
2116 av_free_packet(pkt);
2118 }while( end_time==AV_NOPTS_VALUE
2119 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2120 && ++retry <= DURATION_MAX_RETRY);
2122 fill_all_stream_timings(ic);
2124 avio_seek(ic->pb, old_offset, SEEK_SET);
2125 for (i=0; i<ic->nb_streams; i++) {
2127 st->cur_dts= st->first_dts;
2128 st->last_IP_pts = AV_NOPTS_VALUE;
2129 st->reference_dts = AV_NOPTS_VALUE;
2133 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2137 /* get the file size, if possible */
2138 if (ic->iformat->flags & AVFMT_NOFILE) {
2141 file_size = avio_size(ic->pb);
2142 file_size = FFMAX(0, file_size);
2145 if ((!strcmp(ic->iformat->name, "mpeg") ||
2146 !strcmp(ic->iformat->name, "mpegts")) &&
2147 file_size && ic->pb->seekable) {
2148 /* get accurate estimate from the PTSes */
2149 estimate_timings_from_pts(ic, old_offset);
2150 } else if (has_duration(ic)) {
2151 /* at least one component has timings - we use them for all
2153 fill_all_stream_timings(ic);
2155 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2156 /* less precise: use bitrate info */
2157 estimate_timings_from_bit_rate(ic);
2159 update_stream_timings(ic);
2163 AVStream av_unused *st;
2164 for(i = 0;i < ic->nb_streams; i++) {
2165 st = ic->streams[i];
2166 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2167 (double) st->start_time / AV_TIME_BASE,
2168 (double) st->duration / AV_TIME_BASE);
2170 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2171 (double) ic->start_time / AV_TIME_BASE,
2172 (double) ic->duration / AV_TIME_BASE,
2173 ic->bit_rate / 1000);
2177 static int has_codec_parameters(AVCodecContext *avctx)
2180 switch (avctx->codec_type) {
2181 case AVMEDIA_TYPE_AUDIO:
2182 val = avctx->sample_rate && avctx->channels && avctx->sample_fmt != AV_SAMPLE_FMT_NONE;
2183 if (!avctx->frame_size &&
2184 (avctx->codec_id == CODEC_ID_VORBIS ||
2185 avctx->codec_id == CODEC_ID_AAC ||
2186 avctx->codec_id == CODEC_ID_MP1 ||
2187 avctx->codec_id == CODEC_ID_MP2 ||
2188 avctx->codec_id == CODEC_ID_MP3 ||
2189 avctx->codec_id == CODEC_ID_CELT))
2192 case AVMEDIA_TYPE_VIDEO:
2193 val = avctx->width && avctx->pix_fmt != PIX_FMT_NONE;
2195 case AVMEDIA_TYPE_DATA:
2196 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2201 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2204 static int has_decode_delay_been_guessed(AVStream *st)
2206 return st->codec->codec_id != CODEC_ID_H264 ||
2207 st->info->nb_decoded_frames >= 6;
2210 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2213 int got_picture, ret = 0;
2215 AVPacket pkt = *avpkt;
2217 if(!st->codec->codec){
2218 codec = avcodec_find_decoder(st->codec->codec_id);
2221 ret = avcodec_open2(st->codec, codec, options);
2226 while (pkt.size > 0 && ret >= 0 &&
2227 (!has_codec_parameters(st->codec) ||
2228 !has_decode_delay_been_guessed(st) ||
2229 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2231 avcodec_get_frame_defaults(&picture);
2232 switch(st->codec->codec_type) {
2233 case AVMEDIA_TYPE_VIDEO:
2234 ret = avcodec_decode_video2(st->codec, &picture,
2235 &got_picture, &pkt);
2237 case AVMEDIA_TYPE_AUDIO:
2238 ret = avcodec_decode_audio4(st->codec, &picture, &got_picture, &pkt);
2245 st->info->nb_decoded_frames++;
2254 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2256 while (tags->id != CODEC_ID_NONE) {
2264 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2267 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2268 if(tag == tags[i].tag)
2271 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2272 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2275 return CODEC_ID_NONE;
2278 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2281 for(i=0; tags && tags[i]; i++){
2282 int tag= ff_codec_get_tag(tags[i], id);
2288 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2291 for(i=0; tags && tags[i]; i++){
2292 enum CodecID id= ff_codec_get_id(tags[i], tag);
2293 if(id!=CODEC_ID_NONE) return id;
2295 return CODEC_ID_NONE;
2298 static void compute_chapters_end(AVFormatContext *s)
2301 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2303 for (i = 0; i < s->nb_chapters; i++)
2304 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2305 AVChapter *ch = s->chapters[i];
2306 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2309 for (j = 0; j < s->nb_chapters; j++) {
2310 AVChapter *ch1 = s->chapters[j];
2311 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2312 if (j != i && next_start > ch->start && next_start < end)
2315 ch->end = (end == INT64_MAX) ? ch->start : end;
2319 static int get_std_framerate(int i){
2320 if(i<60*12) return i*1001;
2321 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2325 * Is the time base unreliable.
2326 * This is a heuristic to balance between quick acceptance of the values in
2327 * the headers vs. some extra checks.
2328 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2329 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2330 * And there are "variable" fps files this needs to detect as well.
2332 static int tb_unreliable(AVCodecContext *c){
2333 if( c->time_base.den >= 101L*c->time_base.num
2334 || c->time_base.den < 5L*c->time_base.num
2335 /* || c->codec_tag == AV_RL32("DIVX")
2336 || c->codec_tag == AV_RL32("XVID")*/
2337 || c->codec_id == CODEC_ID_MPEG2VIDEO
2338 || c->codec_id == CODEC_ID_H264
2344 #if FF_API_FORMAT_PARAMETERS
2345 int av_find_stream_info(AVFormatContext *ic)
2347 return avformat_find_stream_info(ic, NULL);
2351 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2353 int i, count, ret, read_size, j;
2355 AVPacket pkt1, *pkt;
2356 int64_t old_offset = avio_tell(ic->pb);
2357 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2359 for(i=0;i<ic->nb_streams;i++) {
2361 st = ic->streams[i];
2363 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2364 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2365 /* if(!st->time_base.num)
2367 if(!st->codec->time_base.num)
2368 st->codec->time_base= st->time_base;
2370 //only for the split stuff
2371 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2372 st->parser = av_parser_init(st->codec->codec_id);
2373 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2374 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2377 assert(!st->codec->codec);
2378 codec = avcodec_find_decoder(st->codec->codec_id);
2380 /* Ensure that subtitle_header is properly set. */
2381 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2382 && codec && !st->codec->codec)
2383 avcodec_open2(st->codec, codec, options ? &options[i] : NULL);
2385 //try to just open decoders, in case this is enough to get parameters
2386 if(!has_codec_parameters(st->codec)){
2387 if (codec && !st->codec->codec){
2388 AVDictionary *tmp = NULL;
2390 av_dict_copy(&tmp, options[i], 0);
2391 av_dict_set(&tmp, "threads", 0, 0);
2393 avcodec_open2(st->codec, codec, options ? &tmp : NULL);
2399 for (i=0; i<ic->nb_streams; i++) {
2400 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2406 if (ff_check_interrupt(&ic->interrupt_callback)){
2408 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2412 /* check if one codec still needs to be handled */
2413 for(i=0;i<ic->nb_streams;i++) {
2414 int fps_analyze_framecount = 20;
2416 st = ic->streams[i];
2417 if (!has_codec_parameters(st->codec))
2419 /* if the timebase is coarse (like the usual millisecond precision
2420 of mkv), we need to analyze more frames to reliably arrive at
2422 if (av_q2d(st->time_base) > 0.0005)
2423 fps_analyze_framecount *= 2;
2424 if (ic->fps_probe_size >= 0)
2425 fps_analyze_framecount = ic->fps_probe_size;
2426 /* variable fps and no guess at the real fps */
2427 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2428 && st->info->duration_count < fps_analyze_framecount
2429 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2431 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2433 if(st->first_dts == AV_NOPTS_VALUE && (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2436 if (i == ic->nb_streams) {
2437 /* NOTE: if the format has no header, then we need to read
2438 some packets to get most of the streams, so we cannot
2440 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2441 /* if we found the info for all the codecs, we can stop */
2443 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2447 /* we did not get all the codec info, but we read too much data */
2448 if (read_size >= ic->probesize) {
2450 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2454 /* NOTE: a new stream can be added there if no header in file
2455 (AVFMTCTX_NOHEADER) */
2456 ret = read_frame_internal(ic, &pkt1);
2457 if (ret == AVERROR(EAGAIN))
2462 ret = -1; /* we could not have all the codec parameters before EOF */
2463 for(i=0;i<ic->nb_streams;i++) {
2464 st = ic->streams[i];
2465 if (!has_codec_parameters(st->codec)){
2467 avcodec_string(buf, sizeof(buf), st->codec, 0);
2468 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2476 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2477 if ((ret = av_dup_packet(pkt)) < 0)
2478 goto find_stream_info_err;
2480 read_size += pkt->size;
2482 st = ic->streams[pkt->stream_index];
2483 if (st->codec_info_nb_frames>1) {
2485 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) {
2486 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2489 st->info->codec_info_duration += pkt->duration;
2492 int64_t last = st->info->last_dts;
2494 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2495 double dts= pkt->dts * av_q2d(st->time_base);
2496 int64_t duration= pkt->dts - last;
2498 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2499 // av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
2500 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2501 int framerate= get_std_framerate(i);
2502 double sdts= dts*framerate/(1001*12);
2504 int ticks= lrintf(sdts+j*0.5);
2505 double error= sdts - ticks + j*0.5;
2506 st->info->duration_error[j][0][i] += error;
2507 st->info->duration_error[j][1][i] += error*error;
2510 st->info->duration_count++;
2511 // ignore the first 4 values, they might have some random jitter
2512 if (st->info->duration_count > 3)
2513 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2515 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2516 st->info->last_dts = pkt->dts;
2518 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2519 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2521 st->codec->extradata_size= i;
2522 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2523 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2524 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2528 /* if still no information, we try to open the codec and to
2529 decompress the frame. We try to avoid that in most cases as
2530 it takes longer and uses more memory. For MPEG-4, we need to
2531 decompress for QuickTime.
2533 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2534 least one frame of codec data, this makes sure the codec initializes
2535 the channel configuration and does not only trust the values from the container.
2537 try_decode_frame(st, pkt, (options && i < orig_nb_streams )? &options[i] : NULL);
2539 st->codec_info_nb_frames++;
2543 // close codecs which were opened in try_decode_frame()
2544 for(i=0;i<ic->nb_streams;i++) {
2545 st = ic->streams[i];
2546 if(st->codec->codec)
2547 avcodec_close(st->codec);
2549 for(i=0;i<ic->nb_streams;i++) {
2550 st = ic->streams[i];
2551 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2552 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2553 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2554 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2555 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2556 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2557 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2558 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2559 st->codec->codec_tag= tag;
2562 // the check for tb_unreliable() is not completely correct, since this is not about handling
2563 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2564 // ipmovie.c produces.
2565 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)
2566 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);
2567 if (st->info->duration_count && !st->r_frame_rate.num
2568 && tb_unreliable(st->codec) /*&&
2569 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2570 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2572 double best_error= 0.01;
2574 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2577 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2580 int n= st->info->duration_count;
2581 double a= st->info->duration_error[k][0][j] / n;
2582 double error= st->info->duration_error[k][1][j]/n - a*a;
2584 if(error < best_error && best_error> 0.000000001){
2586 num = get_std_framerate(j);
2589 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2592 // do not increase frame rate by more than 1 % in order to match a standard rate.
2593 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2594 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2597 if (!st->r_frame_rate.num){
2598 if( st->codec->time_base.den * (int64_t)st->time_base.num
2599 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2600 st->r_frame_rate.num = st->codec->time_base.den;
2601 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2603 st->r_frame_rate.num = st->time_base.den;
2604 st->r_frame_rate.den = st->time_base.num;
2607 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2608 if(!st->codec->bits_per_coded_sample)
2609 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2610 // set stream disposition based on audio service type
2611 switch (st->codec->audio_service_type) {
2612 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2613 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2614 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2615 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2616 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2617 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2618 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2619 st->disposition = AV_DISPOSITION_COMMENT; break;
2620 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2621 st->disposition = AV_DISPOSITION_KARAOKE; break;
2626 estimate_timings(ic, old_offset);
2628 compute_chapters_end(ic);
2631 /* correct DTS for B-frame streams with no timestamps */
2632 for(i=0;i<ic->nb_streams;i++) {
2633 st = ic->streams[i];
2634 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2636 ppktl = &ic->packet_buffer;
2638 if(ppkt1->stream_index != i)
2640 if(ppkt1->pkt->dts < 0)
2642 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2644 ppkt1->pkt->dts -= delta;
2649 st->cur_dts -= delta;
2655 find_stream_info_err:
2656 for (i=0; i < ic->nb_streams; i++)
2657 av_freep(&ic->streams[i]->info);
2661 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2665 for (i = 0; i < ic->nb_programs; i++) {
2666 if (ic->programs[i] == last) {
2670 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2671 if (ic->programs[i]->stream_index[j] == s)
2672 return ic->programs[i];
2678 int av_find_best_stream(AVFormatContext *ic,
2679 enum AVMediaType type,
2680 int wanted_stream_nb,
2682 AVCodec **decoder_ret,
2685 int i, nb_streams = ic->nb_streams;
2686 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2687 unsigned *program = NULL;
2688 AVCodec *decoder = NULL, *best_decoder = NULL;
2690 if (related_stream >= 0 && wanted_stream_nb < 0) {
2691 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2693 program = p->stream_index;
2694 nb_streams = p->nb_stream_indexes;
2697 for (i = 0; i < nb_streams; i++) {
2698 int real_stream_index = program ? program[i] : i;
2699 AVStream *st = ic->streams[real_stream_index];
2700 AVCodecContext *avctx = st->codec;
2701 if (avctx->codec_type != type)
2703 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2705 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2708 decoder = avcodec_find_decoder(st->codec->codec_id);
2711 ret = AVERROR_DECODER_NOT_FOUND;
2715 if (best_count >= st->codec_info_nb_frames)
2717 best_count = st->codec_info_nb_frames;
2718 ret = real_stream_index;
2719 best_decoder = decoder;
2720 if (program && i == nb_streams - 1 && ret < 0) {
2722 nb_streams = ic->nb_streams;
2723 i = 0; /* no related stream found, try again with everything */
2727 *decoder_ret = best_decoder;
2731 /*******************************************************/
2733 int av_read_play(AVFormatContext *s)
2735 if (s->iformat->read_play)
2736 return s->iformat->read_play(s);
2738 return avio_pause(s->pb, 0);
2739 return AVERROR(ENOSYS);
2742 int av_read_pause(AVFormatContext *s)
2744 if (s->iformat->read_pause)
2745 return s->iformat->read_pause(s);
2747 return avio_pause(s->pb, 1);
2748 return AVERROR(ENOSYS);
2751 void av_close_input_stream(AVFormatContext *s)
2753 flush_packet_queue(s);
2754 if (s->iformat->read_close)
2755 s->iformat->read_close(s);
2756 avformat_free_context(s);
2759 void avformat_free_context(AVFormatContext *s)
2765 if (s->iformat && s->iformat->priv_class && s->priv_data)
2766 av_opt_free(s->priv_data);
2768 for(i=0;i<s->nb_streams;i++) {
2769 /* free all data in a stream component */
2772 av_parser_close(st->parser);
2773 av_free_packet(&st->cur_pkt);
2775 av_dict_free(&st->metadata);
2776 av_freep(&st->index_entries);
2777 av_freep(&st->codec->extradata);
2778 av_freep(&st->codec->subtitle_header);
2779 av_freep(&st->codec);
2780 av_freep(&st->priv_data);
2781 av_freep(&st->info);
2784 for(i=s->nb_programs-1; i>=0; i--) {
2785 av_dict_free(&s->programs[i]->metadata);
2786 av_freep(&s->programs[i]->stream_index);
2787 av_freep(&s->programs[i]);
2789 av_freep(&s->programs);
2790 av_freep(&s->priv_data);
2791 while(s->nb_chapters--) {
2792 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2793 av_freep(&s->chapters[s->nb_chapters]);
2795 av_freep(&s->chapters);
2796 av_dict_free(&s->metadata);
2797 av_freep(&s->streams);
2801 void av_close_input_file(AVFormatContext *s)
2803 AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2805 av_close_input_stream(s);
2810 #if FF_API_NEW_STREAM
2811 AVStream *av_new_stream(AVFormatContext *s, int id)
2813 AVStream *st = avformat_new_stream(s, NULL);
2820 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2826 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2828 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2831 s->streams = streams;
2833 st = av_mallocz(sizeof(AVStream));
2836 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2841 st->codec = avcodec_alloc_context3(c);
2843 /* no default bitrate if decoding */
2844 st->codec->bit_rate = 0;
2846 st->index = s->nb_streams;
2847 st->start_time = AV_NOPTS_VALUE;
2848 st->duration = AV_NOPTS_VALUE;
2849 /* we set the current DTS to 0 so that formats without any timestamps
2850 but durations get some timestamps, formats with some unknown
2851 timestamps have their first few packets buffered and the
2852 timestamps corrected before they are returned to the user */
2854 st->first_dts = AV_NOPTS_VALUE;
2855 st->probe_packets = MAX_PROBE_PACKETS;
2857 /* default pts setting is MPEG-like */
2858 avpriv_set_pts_info(st, 33, 1, 90000);
2859 st->last_IP_pts = AV_NOPTS_VALUE;
2860 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2861 st->pts_buffer[i]= AV_NOPTS_VALUE;
2862 st->reference_dts = AV_NOPTS_VALUE;
2864 st->sample_aspect_ratio = (AVRational){0,1};
2866 s->streams[s->nb_streams++] = st;
2870 AVProgram *av_new_program(AVFormatContext *ac, int id)
2872 AVProgram *program=NULL;
2875 av_dlog(ac, "new_program: id=0x%04x\n", id);
2877 for(i=0; i<ac->nb_programs; i++)
2878 if(ac->programs[i]->id == id)
2879 program = ac->programs[i];
2882 program = av_mallocz(sizeof(AVProgram));
2885 dynarray_add(&ac->programs, &ac->nb_programs, program);
2886 program->discard = AVDISCARD_NONE;
2893 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2895 AVChapter *chapter = NULL;
2898 for(i=0; i<s->nb_chapters; i++)
2899 if(s->chapters[i]->id == id)
2900 chapter = s->chapters[i];
2903 chapter= av_mallocz(sizeof(AVChapter));
2906 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2908 av_dict_set(&chapter->metadata, "title", title, 0);
2910 chapter->time_base= time_base;
2911 chapter->start = start;
2917 /************************************************************/
2918 /* output media file */
2920 #if FF_API_FORMAT_PARAMETERS
2921 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2923 if (s->oformat->priv_data_size > 0) {
2924 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2926 return AVERROR(ENOMEM);
2927 if (s->oformat->priv_class) {
2928 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2929 av_opt_set_defaults(s->priv_data);
2932 s->priv_data = NULL;
2938 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
2939 const char *format, const char *filename)
2941 AVFormatContext *s = avformat_alloc_context();
2950 oformat = av_guess_format(format, NULL, NULL);
2952 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
2953 ret = AVERROR(EINVAL);
2957 oformat = av_guess_format(NULL, filename, NULL);
2959 ret = AVERROR(EINVAL);
2960 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
2967 s->oformat = oformat;
2968 if (s->oformat->priv_data_size > 0) {
2969 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2972 if (s->oformat->priv_class) {
2973 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2974 av_opt_set_defaults(s->priv_data);
2977 s->priv_data = NULL;
2980 av_strlcpy(s->filename, filename, sizeof(s->filename));
2984 av_log(s, AV_LOG_ERROR, "Out of memory\n");
2985 ret = AVERROR(ENOMEM);
2987 avformat_free_context(s);
2991 #if FF_API_ALLOC_OUTPUT_CONTEXT
2992 AVFormatContext *avformat_alloc_output_context(const char *format,
2993 AVOutputFormat *oformat, const char *filename)
2995 AVFormatContext *avctx;
2996 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
2997 return ret < 0 ? NULL : avctx;
3001 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
3003 const AVCodecTag *avctag;
3005 enum CodecID id = CODEC_ID_NONE;
3006 unsigned int tag = 0;
3009 * Check that tag + id is in the table
3010 * If neither is in the table -> OK
3011 * If tag is in the table with another id -> FAIL
3012 * If id is in the table with another tag -> FAIL unless strict < normal
3014 for (n = 0; s->oformat->codec_tag[n]; n++) {
3015 avctag = s->oformat->codec_tag[n];
3016 while (avctag->id != CODEC_ID_NONE) {
3017 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3019 if (id == st->codec->codec_id)
3022 if (avctag->id == st->codec->codec_id)
3027 if (id != CODEC_ID_NONE)
3029 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3034 #if FF_API_FORMAT_PARAMETERS
3035 int av_write_header(AVFormatContext *s)
3037 return avformat_write_header(s, NULL);
3041 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3045 AVDictionary *tmp = NULL;
3048 av_dict_copy(&tmp, *options, 0);
3049 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3051 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3052 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3055 // some sanity checks
3056 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3057 av_log(s, AV_LOG_ERROR, "no streams\n");
3058 ret = AVERROR(EINVAL);
3062 for(i=0;i<s->nb_streams;i++) {
3065 switch (st->codec->codec_type) {
3066 case AVMEDIA_TYPE_AUDIO:
3067 if(st->codec->sample_rate<=0){
3068 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3069 ret = AVERROR(EINVAL);
3072 if(!st->codec->block_align)
3073 st->codec->block_align = st->codec->channels *
3074 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3076 case AVMEDIA_TYPE_VIDEO:
3077 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3078 av_log(s, AV_LOG_ERROR, "time base not set\n");
3079 ret = AVERROR(EINVAL);
3082 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3083 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3084 ret = AVERROR(EINVAL);
3087 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3088 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3090 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
3091 ret = AVERROR(EINVAL);
3097 if(s->oformat->codec_tag){
3098 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)){
3099 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3100 st->codec->codec_tag= 0;
3102 if(st->codec->codec_tag){
3103 if (!validate_codec_tag(s, st)) {
3105 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3106 av_log(s, AV_LOG_ERROR,
3107 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3108 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3109 ret = AVERROR_INVALIDDATA;
3113 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3116 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3117 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3118 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3121 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3122 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3123 if (!s->priv_data) {
3124 ret = AVERROR(ENOMEM);
3127 if (s->oformat->priv_class) {
3128 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3129 av_opt_set_defaults(s->priv_data);
3130 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3135 /* set muxer identification string */
3136 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3137 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3140 if(s->oformat->write_header){
3141 ret = s->oformat->write_header(s);
3146 /* init PTS generation */
3147 for(i=0;i<s->nb_streams;i++) {
3148 int64_t den = AV_NOPTS_VALUE;
3151 switch (st->codec->codec_type) {
3152 case AVMEDIA_TYPE_AUDIO:
3153 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3155 case AVMEDIA_TYPE_VIDEO:
3156 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3161 if (den != AV_NOPTS_VALUE) {
3163 ret = AVERROR_INVALIDDATA;
3166 frac_init(&st->pts, 0, 0, den);
3171 av_dict_free(options);
3180 //FIXME merge with compute_pkt_fields
3181 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3182 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3183 int num, den, frame_size, i;
3185 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3186 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3188 /* duration field */
3189 if (pkt->duration == 0) {
3190 compute_frame_duration(&num, &den, st, NULL, pkt);
3192 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3196 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3199 //XXX/FIXME this is a temporary hack until all encoders output pts
3200 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3202 // pkt->pts= st->cur_dts;
3203 pkt->pts= st->pts.val;
3206 //calculate dts from pts
3207 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3208 st->pts_buffer[0]= pkt->pts;
3209 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3210 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3211 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3212 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3214 pkt->dts= st->pts_buffer[0];
3217 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)){
3218 av_log(s, AV_LOG_ERROR,
3219 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3220 st->index, st->cur_dts, pkt->dts);
3221 return AVERROR(EINVAL);
3223 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3224 av_log(s, AV_LOG_ERROR, "pts < dts in stream %d\n", st->index);
3225 return AVERROR(EINVAL);
3228 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3229 st->cur_dts= pkt->dts;
3230 st->pts.val= pkt->dts;
3233 switch (st->codec->codec_type) {
3234 case AVMEDIA_TYPE_AUDIO:
3235 frame_size = get_audio_frame_size(st->codec, pkt->size);
3237 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3238 likely equal to the encoder delay, but it would be better if we
3239 had the real timestamps from the encoder */
3240 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3241 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3244 case AVMEDIA_TYPE_VIDEO:
3245 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3253 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3255 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3257 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3260 ret= s->oformat->write_packet(s, pkt);
3263 s->streams[pkt->stream_index]->nb_frames++;
3267 #define CHUNK_START 0x1000
3269 int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3270 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3272 AVPacketList **next_point, *this_pktl;
3273 AVStream *st= s->streams[pkt->stream_index];
3274 int chunked= s->max_chunk_size || s->max_chunk_duration;
3276 this_pktl = av_mallocz(sizeof(AVPacketList));
3278 return AVERROR(ENOMEM);
3279 this_pktl->pkt= *pkt;
3280 pkt->destruct= NULL; // do not free original but only the copy
3281 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3283 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3284 next_point = &(st->last_in_packet_buffer->next);
3286 next_point = &s->packet_buffer;
3291 uint64_t max= av_rescale_q(s->max_chunk_duration, AV_TIME_BASE_Q, st->time_base);
3292 if( st->interleaver_chunk_size + pkt->size <= s->max_chunk_size-1U
3293 && st->interleaver_chunk_duration + pkt->duration <= max-1U){
3294 st->interleaver_chunk_size += pkt->size;
3295 st->interleaver_chunk_duration += pkt->duration;
3298 st->interleaver_chunk_size =
3299 st->interleaver_chunk_duration = 0;
3300 this_pktl->pkt.flags |= CHUNK_START;
3304 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3306 && ((chunked && !((*next_point)->pkt.flags&CHUNK_START))
3307 || !compare(s, &(*next_point)->pkt, pkt))){
3308 next_point= &(*next_point)->next;
3313 next_point = &(s->packet_buffer_end->next);
3316 assert(!*next_point);
3318 s->packet_buffer_end= this_pktl;
3321 this_pktl->next= *next_point;
3323 s->streams[pkt->stream_index]->last_in_packet_buffer=
3324 *next_point= this_pktl;
3328 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3330 AVStream *st = s->streams[ pkt ->stream_index];
3331 AVStream *st2= s->streams[ next->stream_index];
3332 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3334 if(s->audio_preload && ((st->codec->codec_type == AVMEDIA_TYPE_AUDIO) != (st2->codec->codec_type == AVMEDIA_TYPE_AUDIO))){
3335 int64_t ts = av_rescale_q(pkt ->dts, st ->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st ->codec->codec_type == AVMEDIA_TYPE_AUDIO);
3336 int64_t ts2= av_rescale_q(next->dts, st2->time_base, AV_TIME_BASE_Q) - s->audio_preload*(st2->codec->codec_type == AVMEDIA_TYPE_AUDIO);
3338 ts= ( pkt ->dts* st->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st ->codec->codec_type == AVMEDIA_TYPE_AUDIO)* st->time_base.den)*st2->time_base.den
3339 -( next->dts*st2->time_base.num*AV_TIME_BASE - s->audio_preload*(int64_t)(st2->codec->codec_type == AVMEDIA_TYPE_AUDIO)*st2->time_base.den)* st->time_base.den;
3342 comp= (ts>ts2) - (ts<ts2);
3346 return pkt->stream_index < next->stream_index;
3350 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
3352 int stream_count=0, noninterleaved_count=0;
3353 int64_t delta_dts_max = 0;
3357 ret = ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3362 for(i=0; i < s->nb_streams; i++) {
3363 if (s->streams[i]->last_in_packet_buffer) {
3365 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3366 ++noninterleaved_count;
3370 if (s->nb_streams == stream_count) {
3373 for(i=0; i < s->nb_streams; i++) {
3374 if (s->streams[i]->last_in_packet_buffer) {
3376 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3377 s->streams[i]->time_base,
3379 av_rescale_q(s->packet_buffer->pkt.dts,
3380 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3382 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3385 if(s->nb_streams == stream_count+noninterleaved_count &&
3386 delta_dts_max > 20*AV_TIME_BASE) {
3387 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3391 if(stream_count && flush){
3392 pktl= s->packet_buffer;
3395 s->packet_buffer= pktl->next;
3396 if(!s->packet_buffer)
3397 s->packet_buffer_end= NULL;
3399 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3400 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3404 av_init_packet(out);
3410 * Interleave an AVPacket correctly so it can be muxed.
3411 * @param out the interleaved packet will be output here
3412 * @param in the input packet
3413 * @param flush 1 if no further packets are available as input and all
3414 * remaining packets should be output
3415 * @return 1 if a packet was output, 0 if no packet could be output,
3416 * < 0 if an error occurred
3418 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3419 if(s->oformat->interleave_packet)
3420 return s->oformat->interleave_packet(s, out, in, flush);
3422 return av_interleave_packet_per_dts(s, out, in, flush);
3425 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3426 AVStream *st= s->streams[ pkt->stream_index];
3429 //FIXME/XXX/HACK drop zero sized packets
3430 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3433 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3434 pkt->size, pkt->dts, pkt->pts);
3435 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3438 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3439 return AVERROR(EINVAL);
3443 int ret= interleave_packet(s, &opkt, pkt, 0);
3444 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3447 ret= s->oformat->write_packet(s, &opkt);
3449 s->streams[opkt.stream_index]->nb_frames++;
3451 av_free_packet(&opkt);
3456 if(s->pb && s->pb->error)
3457 return s->pb->error;
3461 int av_write_trailer(AVFormatContext *s)
3467 ret= interleave_packet(s, &pkt, NULL, 1);
3468 if(ret<0) //FIXME cleanup needed for ret<0 ?
3473 ret= s->oformat->write_packet(s, &pkt);
3475 s->streams[pkt.stream_index]->nb_frames++;
3477 av_free_packet(&pkt);
3481 if(s->pb && s->pb->error)
3485 if(s->oformat->write_trailer)
3486 ret = s->oformat->write_trailer(s);
3489 ret = s->pb ? s->pb->error : 0;
3490 for(i=0;i<s->nb_streams;i++) {
3491 av_freep(&s->streams[i]->priv_data);
3492 av_freep(&s->streams[i]->index_entries);
3494 if (s->iformat && s->iformat->priv_class)
3495 av_opt_free(s->priv_data);
3496 av_freep(&s->priv_data);
3500 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3501 int64_t *dts, int64_t *wall)
3503 if (!s->oformat || !s->oformat->get_output_timestamp)
3504 return AVERROR(ENOSYS);
3505 s->oformat->get_output_timestamp(s, stream, dts, wall);
3509 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3512 AVProgram *program=NULL;
3515 if (idx >= ac->nb_streams) {
3516 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3520 for(i=0; i<ac->nb_programs; i++){
3521 if(ac->programs[i]->id != progid)
3523 program = ac->programs[i];
3524 for(j=0; j<program->nb_stream_indexes; j++)
3525 if(program->stream_index[j] == idx)
3528 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3531 program->stream_index = tmp;
3532 program->stream_index[program->nb_stream_indexes++] = idx;
3537 static void print_fps(double d, const char *postfix){
3538 uint64_t v= lrintf(d*100);
3539 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3540 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3541 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3544 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3546 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3547 AVDictionaryEntry *tag=NULL;
3549 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3550 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3551 if(strcmp("language", tag->key)){
3554 av_strlcpy(tmp, tag->value, sizeof(tmp));
3555 for(i=0; i<strlen(tmp); i++) if(tmp[i]==0xd) tmp[i]=' ';
3556 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tmp);
3562 /* "user interface" functions */
3563 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3566 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3567 AVStream *st = ic->streams[i];
3568 int g = av_gcd(st->time_base.num, st->time_base.den);
3569 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3570 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3571 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3572 /* the pid is an important information, so we display it */
3573 /* XXX: add a generic system */
3574 if (flags & AVFMT_SHOW_IDS)
3575 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3577 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3578 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3579 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3580 if (st->sample_aspect_ratio.num && // default
3581 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3582 AVRational display_aspect_ratio;
3583 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3584 st->codec->width*st->sample_aspect_ratio.num,
3585 st->codec->height*st->sample_aspect_ratio.den,
3587 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3588 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3589 display_aspect_ratio.num, display_aspect_ratio.den);
3591 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3592 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3593 print_fps(av_q2d(st->avg_frame_rate), "fps");
3594 if(st->r_frame_rate.den && st->r_frame_rate.num)
3595 print_fps(av_q2d(st->r_frame_rate), "tbr");
3596 if(st->time_base.den && st->time_base.num)
3597 print_fps(1/av_q2d(st->time_base), "tbn");
3598 if(st->codec->time_base.den && st->codec->time_base.num)
3599 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3601 if (st->disposition & AV_DISPOSITION_DEFAULT)
3602 av_log(NULL, AV_LOG_INFO, " (default)");
3603 if (st->disposition & AV_DISPOSITION_DUB)
3604 av_log(NULL, AV_LOG_INFO, " (dub)");
3605 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3606 av_log(NULL, AV_LOG_INFO, " (original)");
3607 if (st->disposition & AV_DISPOSITION_COMMENT)
3608 av_log(NULL, AV_LOG_INFO, " (comment)");
3609 if (st->disposition & AV_DISPOSITION_LYRICS)
3610 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3611 if (st->disposition & AV_DISPOSITION_KARAOKE)
3612 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3613 if (st->disposition & AV_DISPOSITION_FORCED)
3614 av_log(NULL, AV_LOG_INFO, " (forced)");
3615 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3616 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3617 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3618 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3619 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3620 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3621 av_log(NULL, AV_LOG_INFO, "\n");
3622 dump_metadata(NULL, st->metadata, " ");
3625 #if FF_API_DUMP_FORMAT
3626 void dump_format(AVFormatContext *ic,
3631 av_dump_format(ic, index, url, is_output);
3635 void av_dump_format(AVFormatContext *ic,
3641 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3642 if (ic->nb_streams && !printed)
3645 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3646 is_output ? "Output" : "Input",
3648 is_output ? ic->oformat->name : ic->iformat->name,
3649 is_output ? "to" : "from", url);
3650 dump_metadata(NULL, ic->metadata, " ");
3652 av_log(NULL, AV_LOG_INFO, " Duration: ");
3653 if (ic->duration != AV_NOPTS_VALUE) {
3654 int hours, mins, secs, us;
3655 secs = ic->duration / AV_TIME_BASE;
3656 us = ic->duration % AV_TIME_BASE;
3661 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3662 (100 * us) / AV_TIME_BASE);
3664 av_log(NULL, AV_LOG_INFO, "N/A");
3666 if (ic->start_time != AV_NOPTS_VALUE) {
3668 av_log(NULL, AV_LOG_INFO, ", start: ");
3669 secs = ic->start_time / AV_TIME_BASE;
3670 us = abs(ic->start_time % AV_TIME_BASE);
3671 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3672 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3674 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3676 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3678 av_log(NULL, AV_LOG_INFO, "N/A");
3680 av_log(NULL, AV_LOG_INFO, "\n");
3682 for (i = 0; i < ic->nb_chapters; i++) {
3683 AVChapter *ch = ic->chapters[i];
3684 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3685 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3686 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3688 dump_metadata(NULL, ch->metadata, " ");
3690 if(ic->nb_programs) {
3691 int j, k, total = 0;
3692 for(j=0; j<ic->nb_programs; j++) {
3693 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3695 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3696 name ? name->value : "");
3697 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3698 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3699 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3700 printed[ic->programs[j]->stream_index[k]] = 1;
3702 total += ic->programs[j]->nb_stream_indexes;
3704 if (total < ic->nb_streams)
3705 av_log(NULL, AV_LOG_INFO, " No Program\n");
3707 for(i=0;i<ic->nb_streams;i++)
3709 dump_stream_format(ic, i, index, is_output);
3714 int64_t av_gettime(void)
3717 gettimeofday(&tv,NULL);
3718 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3721 uint64_t ff_ntp_time(void)
3723 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3726 #if FF_API_PARSE_DATE
3727 #include "libavutil/parseutils.h"
3729 int64_t parse_date(const char *timestr, int duration)
3732 av_parse_time(&timeval, timestr, duration);
3737 #if FF_API_FIND_INFO_TAG
3738 #include "libavutil/parseutils.h"
3740 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3742 return av_find_info_tag(arg, arg_size, tag1, info);
3746 int av_get_frame_filename(char *buf, int buf_size,
3747 const char *path, int number)
3750 char *q, buf1[20], c;
3751 int nd, len, percentd_found;
3763 while (isdigit(*p)) {
3764 nd = nd * 10 + *p++ - '0';
3767 } while (isdigit(c));
3776 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3778 if ((q - buf + len) > buf_size - 1)
3780 memcpy(q, buf1, len);
3788 if ((q - buf) < buf_size - 1)
3792 if (!percentd_found)
3801 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3805 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3807 for(i=0;i<size;i+=16) {
3814 PRINT(" %02x", buf[i+j]);
3819 for(j=0;j<len;j++) {
3821 if (c < ' ' || c > '~')
3830 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3832 hex_dump_internal(NULL, f, 0, buf, size);
3835 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3837 hex_dump_internal(avcl, NULL, level, buf, size);
3840 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3843 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3844 PRINT("stream #%d:\n", pkt->stream_index);
3845 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3846 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3847 /* DTS is _always_ valid after av_read_frame() */
3849 if (pkt->dts == AV_NOPTS_VALUE)
3852 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3853 /* PTS may not be known if B-frames are present. */
3855 if (pkt->pts == AV_NOPTS_VALUE)
3858 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3860 PRINT(" size=%d\n", pkt->size);
3863 av_hex_dump(f, pkt->data, pkt->size);
3867 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3869 AVRational tb = { 1, AV_TIME_BASE };
3870 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3874 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3876 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3880 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3882 AVRational tb = { 1, AV_TIME_BASE };
3883 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3887 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3890 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3893 void av_url_split(char *proto, int proto_size,
3894 char *authorization, int authorization_size,
3895 char *hostname, int hostname_size,
3897 char *path, int path_size,
3900 const char *p, *ls, *at, *col, *brk;
3902 if (port_ptr) *port_ptr = -1;
3903 if (proto_size > 0) proto[0] = 0;
3904 if (authorization_size > 0) authorization[0] = 0;
3905 if (hostname_size > 0) hostname[0] = 0;
3906 if (path_size > 0) path[0] = 0;
3908 /* parse protocol */
3909 if ((p = strchr(url, ':'))) {
3910 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3915 /* no protocol means plain filename */
3916 av_strlcpy(path, url, path_size);
3920 /* separate path from hostname */
3921 ls = strchr(p, '/');
3923 ls = strchr(p, '?');
3925 av_strlcpy(path, ls, path_size);
3927 ls = &p[strlen(p)]; // XXX
3929 /* the rest is hostname, use that to parse auth/port */
3931 /* authorization (user[:pass]@hostname) */
3932 if ((at = strchr(p, '@')) && at < ls) {
3933 av_strlcpy(authorization, p,
3934 FFMIN(authorization_size, at + 1 - p));
3935 p = at + 1; /* skip '@' */
3938 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3940 av_strlcpy(hostname, p + 1,
3941 FFMIN(hostname_size, brk - p));
3942 if (brk[1] == ':' && port_ptr)
3943 *port_ptr = atoi(brk + 2);
3944 } else if ((col = strchr(p, ':')) && col < ls) {
3945 av_strlcpy(hostname, p,
3946 FFMIN(col + 1 - p, hostname_size));
3947 if (port_ptr) *port_ptr = atoi(col + 1);
3949 av_strlcpy(hostname, p,
3950 FFMIN(ls + 1 - p, hostname_size));
3954 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3957 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3960 'C', 'D', 'E', 'F' };
3961 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3964 'c', 'd', 'e', 'f' };
3965 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3967 for(i = 0; i < s; i++) {
3968 buff[i * 2] = hex_table[src[i] >> 4];
3969 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3975 int ff_hex_to_data(uint8_t *data, const char *p)
3982 p += strspn(p, SPACE_CHARS);
3985 c = toupper((unsigned char) *p++);
3986 if (c >= '0' && c <= '9')
3988 else if (c >= 'A' && c <= 'F')
4003 #if FF_API_SET_PTS_INFO
4004 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
4005 unsigned int pts_num, unsigned int pts_den)
4007 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
4011 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4012 unsigned int pts_num, unsigned int pts_den)
4015 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
4016 if(new_tb.num != pts_num)
4017 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
4019 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
4021 if(new_tb.num <= 0 || new_tb.den <= 0) {
4022 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
4025 s->time_base = new_tb;
4026 s->pts_wrap_bits = pts_wrap_bits;
4029 int ff_url_join(char *str, int size, const char *proto,
4030 const char *authorization, const char *hostname,
4031 int port, const char *fmt, ...)
4034 struct addrinfo hints, *ai;
4039 av_strlcatf(str, size, "%s://", proto);
4040 if (authorization && authorization[0])
4041 av_strlcatf(str, size, "%s@", authorization);
4042 #if CONFIG_NETWORK && defined(AF_INET6)
4043 /* Determine if hostname is a numerical IPv6 address,
4044 * properly escape it within [] in that case. */
4045 memset(&hints, 0, sizeof(hints));
4046 hints.ai_flags = AI_NUMERICHOST;
4047 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4048 if (ai->ai_family == AF_INET6) {
4049 av_strlcat(str, "[", size);
4050 av_strlcat(str, hostname, size);
4051 av_strlcat(str, "]", size);
4053 av_strlcat(str, hostname, size);
4058 /* Not an IPv6 address, just output the plain string. */
4059 av_strlcat(str, hostname, size);
4062 av_strlcatf(str, size, ":%d", port);
4065 int len = strlen(str);
4068 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4074 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4075 AVFormatContext *src)
4080 local_pkt.stream_index = dst_stream;
4081 if (pkt->pts != AV_NOPTS_VALUE)
4082 local_pkt.pts = av_rescale_q(pkt->pts,
4083 src->streams[pkt->stream_index]->time_base,
4084 dst->streams[dst_stream]->time_base);
4085 if (pkt->dts != AV_NOPTS_VALUE)
4086 local_pkt.dts = av_rescale_q(pkt->dts,
4087 src->streams[pkt->stream_index]->time_base,
4088 dst->streams[dst_stream]->time_base);
4089 return av_write_frame(dst, &local_pkt);
4092 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4095 const char *ptr = str;
4097 /* Parse key=value pairs. */
4100 char *dest = NULL, *dest_end;
4101 int key_len, dest_len = 0;
4103 /* Skip whitespace and potential commas. */
4104 while (*ptr && (isspace(*ptr) || *ptr == ','))
4111 if (!(ptr = strchr(key, '=')))
4114 key_len = ptr - key;
4116 callback_get_buf(context, key, key_len, &dest, &dest_len);
4117 dest_end = dest + dest_len - 1;
4121 while (*ptr && *ptr != '\"') {
4125 if (dest && dest < dest_end)
4129 if (dest && dest < dest_end)
4137 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4138 if (dest && dest < dest_end)
4146 int ff_find_stream_index(AVFormatContext *s, int id)
4149 for (i = 0; i < s->nb_streams; i++) {
4150 if (s->streams[i]->id == id)
4156 void ff_make_absolute_url(char *buf, int size, const char *base,
4160 /* Absolute path, relative to the current server */
4161 if (base && strstr(base, "://") && rel[0] == '/') {
4163 av_strlcpy(buf, base, size);
4164 sep = strstr(buf, "://");
4167 sep = strchr(sep, '/');
4171 av_strlcat(buf, rel, size);
4174 /* If rel actually is an absolute url, just copy it */
4175 if (!base || strstr(rel, "://") || rel[0] == '/') {
4176 av_strlcpy(buf, rel, size);
4180 av_strlcpy(buf, base, size);
4181 /* Remove the file name from the base url */
4182 sep = strrchr(buf, '/');
4187 while (av_strstart(rel, "../", NULL) && sep) {
4188 /* Remove the path delimiter at the end */
4190 sep = strrchr(buf, '/');
4191 /* If the next directory name to pop off is "..", break here */
4192 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4193 /* Readd the slash we just removed */
4194 av_strlcat(buf, "/", size);
4197 /* Cut off the directory name */
4204 av_strlcat(buf, rel, size);
4207 int64_t ff_iso8601_to_unix_time(const char *datestr)
4210 struct tm time1 = {0}, time2 = {0};
4212 ret1 = strptime(datestr, "%Y - %m - %d %T", &time1);
4213 ret2 = strptime(datestr, "%Y - %m - %dT%T", &time2);
4215 return av_timegm(&time2);
4217 return av_timegm(&time1);
4219 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4220 "the date string.\n");
4225 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4228 if (ofmt->query_codec)
4229 return ofmt->query_codec(codec_id, std_compliance);
4230 else if (ofmt->codec_tag)
4231 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4232 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4233 codec_id == ofmt->subtitle_codec)
4236 return AVERROR_PATCHWELCOME;
4239 int avformat_network_init(void)
4243 ff_network_inited_globally = 1;
4244 if ((ret = ff_network_init()) < 0)
4251 int avformat_network_deinit(void)