2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/dict.h"
31 #include "libavutil/pixdesc.h"
34 #include "libavutil/avstring.h"
35 #include "libavutil/mathematics.h"
37 #include "audiointerleave.h"
52 * various utility functions for use within FFmpeg
55 unsigned avformat_version(void)
57 return LIBAVFORMAT_VERSION_INT;
60 const char *avformat_configuration(void)
62 return FFMPEG_CONFIGURATION;
65 const char *avformat_license(void)
67 #define LICENSE_PREFIX "libavformat license: "
68 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
71 /* fraction handling */
74 * f = val + (num / den) + 0.5.
76 * 'num' is normalized so that it is such as 0 <= num < den.
78 * @param f fractional number
79 * @param val integer value
80 * @param num must be >= 0
81 * @param den must be >= 1
83 static void frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
96 * Fractional addition to f: f = f + (incr / f->den).
98 * @param f fractional number
99 * @param incr increment, can be positive or negative
101 static void frac_add(AVFrac *f, int64_t incr)
114 } else if (num >= den) {
121 /** head of registered input format linked list */
122 static AVInputFormat *first_iformat = NULL;
123 /** head of registered output format linked list */
124 static AVOutputFormat *first_oformat = NULL;
126 AVInputFormat *av_iformat_next(AVInputFormat *f)
128 if(f) return f->next;
129 else return first_iformat;
132 AVOutputFormat *av_oformat_next(AVOutputFormat *f)
134 if(f) return f->next;
135 else return first_oformat;
138 void av_register_input_format(AVInputFormat *format)
142 while (*p != NULL) p = &(*p)->next;
147 void av_register_output_format(AVOutputFormat *format)
151 while (*p != NULL) p = &(*p)->next;
156 int av_match_ext(const char *filename, const char *extensions)
164 ext = strrchr(filename, '.');
170 while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
173 if (!strcasecmp(ext1, ext))
183 static int match_format(const char *name, const char *names)
191 namelen = strlen(name);
192 while ((p = strchr(names, ','))) {
193 len = FFMAX(p - names, namelen);
194 if (!strncasecmp(name, names, len))
198 return !strcasecmp(name, names);
201 AVOutputFormat *av_guess_format(const char *short_name, const char *filename,
202 const char *mime_type)
204 AVOutputFormat *fmt = NULL, *fmt_found;
205 int score_max, score;
207 /* specific test for image sequences */
208 #if CONFIG_IMAGE2_MUXER
209 if (!short_name && filename &&
210 av_filename_number_test(filename) &&
211 ff_guess_image2_codec(filename) != CODEC_ID_NONE) {
212 return av_guess_format("image2", NULL, NULL);
215 /* Find the proper file type. */
218 while ((fmt = av_oformat_next(fmt))) {
220 if (fmt->name && short_name && !strcmp(fmt->name, short_name))
222 if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
224 if (filename && fmt->extensions &&
225 av_match_ext(filename, fmt->extensions)) {
228 if (score > score_max) {
236 enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
237 const char *filename, const char *mime_type, enum AVMediaType type){
238 if(type == AVMEDIA_TYPE_VIDEO){
239 enum CodecID codec_id= CODEC_ID_NONE;
241 #if CONFIG_IMAGE2_MUXER
242 if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
243 codec_id= ff_guess_image2_codec(filename);
246 if(codec_id == CODEC_ID_NONE)
247 codec_id= fmt->video_codec;
249 }else if(type == AVMEDIA_TYPE_AUDIO)
250 return fmt->audio_codec;
251 else if (type == AVMEDIA_TYPE_SUBTITLE)
252 return fmt->subtitle_codec;
254 return CODEC_ID_NONE;
257 AVInputFormat *av_find_input_format(const char *short_name)
259 AVInputFormat *fmt = NULL;
260 while ((fmt = av_iformat_next(fmt))) {
261 if (match_format(short_name, fmt->name))
268 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
270 int ret= av_new_packet(pkt, size);
275 pkt->pos= avio_tell(s);
277 ret= avio_read(s, pkt->data, size);
281 av_shrink_packet(pkt, ret);
286 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
291 return av_get_packet(s, pkt, size);
292 old_size = pkt->size;
293 ret = av_grow_packet(pkt, size);
296 ret = avio_read(s, pkt->data + old_size, size);
297 av_shrink_packet(pkt, old_size + FFMAX(ret, 0));
302 int av_filename_number_test(const char *filename)
305 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
308 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
310 AVProbeData lpd = *pd;
311 AVInputFormat *fmt1 = NULL, *fmt;
312 int score, score_max=0;
314 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
315 int id3len = ff_id3v2_tag_len(lpd.buf);
316 if (lpd.buf_size > id3len + 16) {
318 lpd.buf_size -= id3len;
323 while ((fmt1 = av_iformat_next(fmt1))) {
324 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
327 if (fmt1->read_probe) {
328 score = fmt1->read_probe(&lpd);
329 if(!score && fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
331 } else if (fmt1->extensions) {
332 if (av_match_ext(lpd.filename, fmt1->extensions)) {
336 if (score > score_max) {
339 }else if (score == score_max)
342 *score_ret= score_max;
347 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
350 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
351 if(score_ret > *score_max){
352 *score_max= score_ret;
358 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
360 return av_probe_input_format2(pd, is_opened, &score);
363 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
365 static const struct {
366 const char *name; enum CodecID id; enum AVMediaType type;
368 { "aac" , CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
369 { "ac3" , CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
370 { "dts" , CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
371 { "eac3" , CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
372 { "h264" , CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
373 { "loas" , CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
374 { "m4v" , CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
375 { "mp3" , CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
376 { "mpegvideo", CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
380 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
384 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
385 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
386 for (i = 0; fmt_id_type[i].name; i++) {
387 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
388 st->codec->codec_id = fmt_id_type[i].id;
389 st->codec->codec_type = fmt_id_type[i].type;
397 /************************************************************/
398 /* input media file */
400 #if FF_API_FORMAT_PARAMETERS
401 static AVDictionary *convert_format_parameters(AVFormatParameters *ap)
404 AVDictionary *opts = NULL;
409 AV_NOWARN_DEPRECATED(
410 if (ap->time_base.num) {
411 snprintf(buf, sizeof(buf), "%d/%d", ap->time_base.den, ap->time_base.num);
412 av_dict_set(&opts, "framerate", buf, 0);
414 if (ap->sample_rate) {
415 snprintf(buf, sizeof(buf), "%d", ap->sample_rate);
416 av_dict_set(&opts, "sample_rate", buf, 0);
419 snprintf(buf, sizeof(buf), "%d", ap->channels);
420 av_dict_set(&opts, "channels", buf, 0);
422 if (ap->width || ap->height) {
423 snprintf(buf, sizeof(buf), "%dx%d", ap->width, ap->height);
424 av_dict_set(&opts, "video_size", buf, 0);
426 if (ap->pix_fmt != PIX_FMT_NONE) {
427 av_dict_set(&opts, "pixel_format", av_get_pix_fmt_name(ap->pix_fmt), 0);
430 snprintf(buf, sizeof(buf), "%d", ap->channel);
431 av_dict_set(&opts, "channel", buf, 0);
434 av_dict_set(&opts, "standard", ap->standard, 0);
436 if (ap->mpeg2ts_compute_pcr) {
437 av_dict_set(&opts, "mpeg2ts_compute_pcr", "1", 0);
439 if (ap->initial_pause) {
440 av_dict_set(&opts, "initial_pause", "1", 0);
447 * Open a media file from an IO stream. 'fmt' must be specified.
449 int av_open_input_stream(AVFormatContext **ic_ptr,
450 AVIOContext *pb, const char *filename,
451 AVInputFormat *fmt, AVFormatParameters *ap)
456 AVFormatParameters default_ap;
460 memset(ap, 0, sizeof(default_ap));
462 opts = convert_format_parameters(ap);
464 AV_NOWARN_DEPRECATED(
465 if(!ap->prealloced_context)
466 *ic_ptr = ic = avformat_alloc_context();
471 err = AVERROR(ENOMEM);
474 if (pb && fmt && fmt->flags & AVFMT_NOFILE)
475 av_log(ic, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
476 "will be ignored with AVFMT_NOFILE format.\n");
480 if ((err = avformat_open_input(&ic, filename, fmt, &opts)) < 0)
482 ic->pb = ic->pb ? ic->pb : pb; // don't leak custom pb if it wasn't set above
491 int av_demuxer_open(AVFormatContext *ic, AVFormatParameters *ap){
494 if (ic->iformat->read_header) {
495 err = ic->iformat->read_header(ic, ap);
500 if (ic->pb && !ic->data_offset)
501 ic->data_offset = avio_tell(ic->pb);
507 /** size of probe buffer, for guessing file type from file contents */
508 #define PROBE_BUF_MIN 2048
509 #define PROBE_BUF_MAX (1<<20)
511 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
512 const char *filename, void *logctx,
513 unsigned int offset, unsigned int max_probe_size)
515 AVProbeData pd = { filename ? filename : "", NULL, -offset };
516 unsigned char *buf = NULL;
517 int ret = 0, probe_size;
519 if (!max_probe_size) {
520 max_probe_size = PROBE_BUF_MAX;
521 } else if (max_probe_size > PROBE_BUF_MAX) {
522 max_probe_size = PROBE_BUF_MAX;
523 } else if (max_probe_size < PROBE_BUF_MIN) {
524 return AVERROR(EINVAL);
527 if (offset >= max_probe_size) {
528 return AVERROR(EINVAL);
531 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
532 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
533 int score = probe_size < max_probe_size ? AVPROBE_SCORE_MAX/4 : 0;
534 int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
537 if (probe_size < offset) {
541 /* read probe data */
542 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
545 return AVERROR(ENOMEM);
548 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
549 /* fail if error was not end of file, otherwise, lower score */
550 if (ret != AVERROR_EOF) {
555 ret = 0; /* error was end of file, nothing read */
558 pd.buf = &buf[offset];
560 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
562 /* guess file format */
563 *fmt = av_probe_input_format2(&pd, 1, &score);
565 if(score <= AVPROBE_SCORE_MAX/4){ //this can only be true in the last iteration
566 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
568 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
574 return AVERROR_INVALIDDATA;
577 /* rewind. reuse probe buffer to avoid seeking */
578 if ((ret = ffio_rewind_with_probe_data(pb, buf, pd.buf_size)) < 0)
584 #if FF_API_FORMAT_PARAMETERS
585 int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
588 AVFormatParameters *ap)
591 AVDictionary *opts = convert_format_parameters(ap);
593 AV_NOWARN_DEPRECATED(
594 if (!ap || !ap->prealloced_context)
598 err = avformat_open_input(ic_ptr, filename, fmt, &opts);
605 /* open input file and probe the format if necessary */
606 static int init_input(AVFormatContext *s, const char *filename)
609 AVProbeData pd = {filename, NULL, 0};
612 s->flags |= AVFMT_FLAG_CUSTOM_IO;
614 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
615 else if (s->iformat->flags & AVFMT_NOFILE)
616 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
617 "will be ignored with AVFMT_NOFILE format.\n");
621 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
622 (!s->iformat && (s->iformat = av_probe_input_format(&pd, 0))))
625 if ((ret = avio_open(&s->pb, filename, AVIO_FLAG_READ)) < 0)
629 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, 0);
632 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
634 AVFormatContext *s = *ps;
636 AVFormatParameters ap = { { 0 } };
637 AVDictionary *tmp = NULL;
639 if (!s && !(s = avformat_alloc_context()))
640 return AVERROR(ENOMEM);
645 av_dict_copy(&tmp, *options, 0);
647 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
650 if ((ret = init_input(s, filename)) < 0)
653 /* check filename in case an image number is expected */
654 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
655 if (!av_filename_number_test(filename)) {
656 ret = AVERROR(EINVAL);
661 s->duration = s->start_time = AV_NOPTS_VALUE;
662 av_strlcpy(s->filename, filename, sizeof(s->filename));
664 /* allocate private data */
665 if (s->iformat->priv_data_size > 0) {
666 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
667 ret = AVERROR(ENOMEM);
670 if (s->iformat->priv_class) {
671 *(const AVClass**)s->priv_data = s->iformat->priv_class;
672 av_opt_set_defaults(s->priv_data);
673 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
678 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
680 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC);
682 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
683 if ((ret = s->iformat->read_header(s, &ap)) < 0)
686 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
687 s->data_offset = avio_tell(s->pb);
689 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
692 av_dict_free(options);
700 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
702 avformat_free_context(s);
707 /*******************************************************/
709 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
710 AVPacketList **plast_pktl){
711 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
716 (*plast_pktl)->next = pktl;
718 *packet_buffer = pktl;
720 /* add the packet in the buffered packet list */
726 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
732 AVPacketList *pktl = s->raw_packet_buffer;
736 if(s->streams[pkt->stream_index]->request_probe <= 0){
737 s->raw_packet_buffer = pktl->next;
738 s->raw_packet_buffer_remaining_size += pkt->size;
745 ret= s->iformat->read_packet(s, pkt);
747 if (!pktl || ret == AVERROR(EAGAIN))
749 for (i = 0; i < s->nb_streams; i++)
750 if(s->streams[i]->request_probe > 0)
751 s->streams[i]->request_probe = -1;
755 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
756 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
757 av_log(s, AV_LOG_WARNING,
758 "Dropped corrupted packet (stream = %d)\n",
764 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
765 av_packet_merge_side_data(pkt);
767 if(pkt->stream_index >= (unsigned)s->nb_streams){
768 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
772 st= s->streams[pkt->stream_index];
774 switch(st->codec->codec_type){
775 case AVMEDIA_TYPE_VIDEO:
776 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
778 case AVMEDIA_TYPE_AUDIO:
779 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
781 case AVMEDIA_TYPE_SUBTITLE:
782 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
786 if(!pktl && st->request_probe <= 0)
789 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
790 s->raw_packet_buffer_remaining_size -= pkt->size;
792 if(st->request_probe>0){
793 AVProbeData *pd = &st->probe_data;
795 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
798 pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
799 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
800 pd->buf_size += pkt->size;
801 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
803 end= s->raw_packet_buffer_remaining_size <= 0
804 || st->probe_packets<=0;
806 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
807 int score= set_codec_from_probe_data(s, st, pd);
808 if( (st->codec->codec_id != CODEC_ID_NONE && score > AVPROBE_SCORE_MAX/4)
812 st->request_probe= -1;
813 if(st->codec->codec_id != CODEC_ID_NONE){
814 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
816 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
823 /**********************************************************/
826 * Get the number of samples of an audio frame. Return -1 on error.
828 static int get_audio_frame_size(AVCodecContext *enc, int size)
832 if(enc->codec_id == CODEC_ID_VORBIS)
835 if (enc->frame_size <= 1) {
836 int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
838 if (bits_per_sample) {
839 if (enc->channels == 0)
841 frame_size = (size << 3) / (bits_per_sample * enc->channels);
843 /* used for example by ADPCM codecs */
844 if (enc->bit_rate == 0)
846 frame_size = ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
849 frame_size = enc->frame_size;
856 * Return the frame duration in seconds. Return 0 if not available.
858 static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
859 AVCodecParserContext *pc, AVPacket *pkt)
865 switch(st->codec->codec_type) {
866 case AVMEDIA_TYPE_VIDEO:
867 if(st->time_base.num*1000LL > st->time_base.den){
868 *pnum = st->time_base.num;
869 *pden = st->time_base.den;
870 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
871 *pnum = st->codec->time_base.num;
872 *pden = st->codec->time_base.den;
873 if (pc && pc->repeat_pict) {
874 *pnum = (*pnum) * (1 + pc->repeat_pict);
876 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
877 //Thus if we have no parser in such case leave duration undefined.
878 if(st->codec->ticks_per_frame>1 && !pc){
883 case AVMEDIA_TYPE_AUDIO:
884 frame_size = get_audio_frame_size(st->codec, pkt->size);
885 if (frame_size <= 0 || st->codec->sample_rate <= 0)
888 *pden = st->codec->sample_rate;
895 static int is_intra_only(AVCodecContext *enc){
896 if(enc->codec_type == AVMEDIA_TYPE_AUDIO){
898 }else if(enc->codec_type == AVMEDIA_TYPE_VIDEO){
899 switch(enc->codec_id){
901 case CODEC_ID_MJPEGB:
903 case CODEC_ID_PRORES:
904 case CODEC_ID_RAWVIDEO:
905 case CODEC_ID_DVVIDEO:
906 case CODEC_ID_HUFFYUV:
907 case CODEC_ID_FFVHUFF:
912 case CODEC_ID_JPEG2000:
920 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
921 int64_t dts, int64_t pts)
923 AVStream *st= s->streams[stream_index];
924 AVPacketList *pktl= s->packet_buffer;
926 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
929 st->first_dts= dts - st->cur_dts;
932 for(; pktl; pktl= pktl->next){
933 if(pktl->pkt.stream_index != stream_index)
935 //FIXME think more about this check
936 if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
937 pktl->pkt.pts += st->first_dts;
939 if(pktl->pkt.dts != AV_NOPTS_VALUE)
940 pktl->pkt.dts += st->first_dts;
942 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
943 st->start_time= pktl->pkt.pts;
945 if (st->start_time == AV_NOPTS_VALUE)
946 st->start_time = pts;
949 static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
951 AVPacketList *pktl= s->packet_buffer;
954 if(st->first_dts != AV_NOPTS_VALUE){
955 cur_dts= st->first_dts;
956 for(; pktl; pktl= pktl->next){
957 if(pktl->pkt.stream_index == pkt->stream_index){
958 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
960 cur_dts -= pkt->duration;
963 pktl= s->packet_buffer;
964 st->first_dts = cur_dts;
965 }else if(st->cur_dts)
968 for(; pktl; pktl= pktl->next){
969 if(pktl->pkt.stream_index != pkt->stream_index)
971 if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
972 && !pktl->pkt.duration){
973 pktl->pkt.dts= cur_dts;
974 if(!st->codec->has_b_frames)
975 pktl->pkt.pts= cur_dts;
976 cur_dts += pkt->duration;
977 pktl->pkt.duration= pkt->duration;
981 if(st->first_dts == AV_NOPTS_VALUE)
982 st->cur_dts= cur_dts;
985 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
986 AVCodecParserContext *pc, AVPacket *pkt)
988 int num, den, presentation_delayed, delay, i;
991 if (s->flags & AVFMT_FLAG_NOFILLIN)
994 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
995 pkt->dts= AV_NOPTS_VALUE;
997 if (st->codec->codec_id != CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
998 //FIXME Set low_delay = 0 when has_b_frames = 1
999 st->codec->has_b_frames = 1;
1001 /* do we have a video B-frame ? */
1002 delay= st->codec->has_b_frames;
1003 presentation_delayed = 0;
1005 // ignore delay caused by frame threading so that the mpeg2-without-dts
1006 // warning will not trigger
1007 if (delay && st->codec->active_thread_type&FF_THREAD_FRAME)
1008 delay -= st->codec->thread_count-1;
1010 /* XXX: need has_b_frame, but cannot get it if the codec is
1013 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1014 presentation_delayed = 1;
1016 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){
1017 pkt->dts -= 1LL<<st->pts_wrap_bits;
1020 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1021 // we take the conservative approach and discard both
1022 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1023 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1024 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1025 pkt->dts= pkt->pts= AV_NOPTS_VALUE;
1028 if (pkt->duration == 0) {
1029 compute_frame_duration(&num, &den, st, pc, pkt);
1031 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1033 if(pkt->duration != 0 && s->packet_buffer)
1034 update_initial_durations(s, st, pkt);
1038 /* correct timestamps with byte offset if demuxers only have timestamps
1039 on packet boundaries */
1040 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1041 /* this will estimate bitrate based on this frame's duration and size */
1042 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1043 if(pkt->pts != AV_NOPTS_VALUE)
1045 if(pkt->dts != AV_NOPTS_VALUE)
1049 if (pc && pc->dts_sync_point >= 0) {
1050 // we have synchronization info from the parser
1051 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1053 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1054 if (pkt->dts != AV_NOPTS_VALUE) {
1055 // got DTS from the stream, update reference timestamp
1056 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1057 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1058 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1059 // compute DTS based on reference timestamp
1060 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1061 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1063 if (pc->dts_sync_point > 0)
1064 st->reference_dts = pkt->dts; // new reference
1068 /* This may be redundant, but it should not hurt. */
1069 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1070 presentation_delayed = 1;
1072 // 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);
1073 /* interpolate PTS and DTS if they are not present */
1074 //We skip H264 currently because delay and has_b_frames are not reliably set
1075 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != CODEC_ID_H264){
1076 if (presentation_delayed) {
1077 /* DTS = decompression timestamp */
1078 /* PTS = presentation timestamp */
1079 if (pkt->dts == AV_NOPTS_VALUE)
1080 pkt->dts = st->last_IP_pts;
1081 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
1082 if (pkt->dts == AV_NOPTS_VALUE)
1083 pkt->dts = st->cur_dts;
1085 /* this is tricky: the dts must be incremented by the duration
1086 of the frame we are displaying, i.e. the last I- or P-frame */
1087 if (st->last_IP_duration == 0)
1088 st->last_IP_duration = pkt->duration;
1089 if(pkt->dts != AV_NOPTS_VALUE)
1090 st->cur_dts = pkt->dts + st->last_IP_duration;
1091 st->last_IP_duration = pkt->duration;
1092 st->last_IP_pts= pkt->pts;
1093 /* cannot compute PTS if not present (we can compute it only
1094 by knowing the future */
1095 } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
1096 if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
1097 int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
1098 int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
1099 if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
1100 pkt->pts += pkt->duration;
1101 // 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);
1105 /* presentation is not delayed : PTS and DTS are the same */
1106 if(pkt->pts == AV_NOPTS_VALUE)
1107 pkt->pts = pkt->dts;
1108 update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
1109 if(pkt->pts == AV_NOPTS_VALUE)
1110 pkt->pts = st->cur_dts;
1111 pkt->dts = pkt->pts;
1112 if(pkt->pts != AV_NOPTS_VALUE)
1113 st->cur_dts = pkt->pts + pkt->duration;
1117 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
1118 st->pts_buffer[0]= pkt->pts;
1119 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1120 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1121 if(pkt->dts == AV_NOPTS_VALUE)
1122 pkt->dts= st->pts_buffer[0];
1123 if(st->codec->codec_id == CODEC_ID_H264){ //we skiped it above so we try here
1124 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
1126 if(pkt->dts > st->cur_dts)
1127 st->cur_dts = pkt->dts;
1130 // 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);
1133 if(is_intra_only(st->codec))
1134 pkt->flags |= AV_PKT_FLAG_KEY;
1137 /* keyframe computation */
1138 if (pc->key_frame == 1)
1139 pkt->flags |= AV_PKT_FLAG_KEY;
1140 else if (pc->key_frame == -1 && pc->pict_type == AV_PICTURE_TYPE_I)
1141 pkt->flags |= AV_PKT_FLAG_KEY;
1144 pkt->convergence_duration = pc->convergence_duration;
1148 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1153 av_init_packet(pkt);
1156 /* select current input stream component */
1159 if (!st->need_parsing || !st->parser) {
1160 /* no parsing needed: we just output the packet as is */
1161 /* raw data support */
1163 st->cur_pkt.data= NULL;
1164 st->cur_pkt.side_data_elems = 0;
1165 st->cur_pkt.side_data = NULL;
1166 compute_pkt_fields(s, st, NULL, pkt);
1168 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1169 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1170 ff_reduce_index(s, st->index);
1171 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1174 } else if (st->cur_len > 0 && st->discard < AVDISCARD_ALL) {
1175 len = av_parser_parse2(st->parser, st->codec, &pkt->data, &pkt->size,
1176 st->cur_ptr, st->cur_len,
1177 st->cur_pkt.pts, st->cur_pkt.dts,
1179 st->cur_pkt.pts = AV_NOPTS_VALUE;
1180 st->cur_pkt.dts = AV_NOPTS_VALUE;
1181 /* increment read pointer */
1185 /* return packet if any */
1189 pkt->stream_index = st->index;
1190 pkt->pts = st->parser->pts;
1191 pkt->dts = st->parser->dts;
1192 pkt->pos = st->parser->pos;
1193 if(pkt->data == st->cur_pkt.data && pkt->size == st->cur_pkt.size){
1195 pkt->destruct= st->cur_pkt.destruct;
1196 st->cur_pkt.destruct= NULL;
1197 st->cur_pkt.data = NULL;
1198 assert(st->cur_len == 0);
1200 pkt->destruct = NULL;
1202 compute_pkt_fields(s, st, st->parser, pkt);
1204 if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY){
1205 int64_t pos= (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->pos : st->parser->frame_offset;
1206 ff_reduce_index(s, st->index);
1207 av_add_index_entry(st, pos, pkt->dts,
1208 0, 0, AVINDEX_KEYFRAME);
1215 av_free_packet(&st->cur_pkt);
1220 /* read next packet */
1221 ret = av_read_packet(s, &cur_pkt);
1223 if (ret == AVERROR(EAGAIN))
1225 /* return the last frames, if any */
1226 for(i = 0; i < s->nb_streams; i++) {
1228 if (st->parser && st->need_parsing) {
1229 av_parser_parse2(st->parser, st->codec,
1230 &pkt->data, &pkt->size,
1232 AV_NOPTS_VALUE, AV_NOPTS_VALUE,
1238 /* no more packets: really terminate parsing */
1241 st = s->streams[cur_pkt.stream_index];
1242 st->cur_pkt= cur_pkt;
1244 if(st->cur_pkt.pts != AV_NOPTS_VALUE &&
1245 st->cur_pkt.dts != AV_NOPTS_VALUE &&
1246 st->cur_pkt.pts < st->cur_pkt.dts){
1247 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
1248 st->cur_pkt.stream_index,
1252 // av_free_packet(&st->cur_pkt);
1256 if(s->debug & FF_FDEBUG_TS)
1257 av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1258 st->cur_pkt.stream_index,
1262 st->cur_pkt.duration,
1266 st->cur_ptr = st->cur_pkt.data;
1267 st->cur_len = st->cur_pkt.size;
1268 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1269 st->parser = av_parser_init(st->codec->codec_id);
1271 av_log(s, AV_LOG_WARNING, "parser not found for codec "
1272 "%s, packets or times may be invalid.\n",
1273 avcodec_get_name(st->codec->codec_id));
1274 /* no parser available: just output the raw packets */
1275 st->need_parsing = AVSTREAM_PARSE_NONE;
1276 }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
1277 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1278 }else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE){
1279 st->parser->flags |= PARSER_FLAG_ONCE;
1284 if(s->debug & FF_FDEBUG_TS)
1285 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, duration=%d, flags=%d\n",
1296 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1300 const int genpts= s->flags & AVFMT_FLAG_GENPTS;
1303 pktl = s->packet_buffer;
1305 AVPacket *next_pkt= &pktl->pkt;
1307 if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
1308 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1309 while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
1310 if( pktl->pkt.stream_index == next_pkt->stream_index
1311 && (0 > av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)))
1312 && av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1313 next_pkt->pts= pktl->pkt.dts;
1317 pktl = s->packet_buffer;
1320 if( next_pkt->pts != AV_NOPTS_VALUE
1321 || next_pkt->dts == AV_NOPTS_VALUE
1323 /* read packet from packet buffer, if there is data */
1325 s->packet_buffer = pktl->next;
1331 int ret= read_frame_internal(s, pkt);
1333 if(pktl && ret != AVERROR(EAGAIN)){
1340 if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1341 &s->packet_buffer_end)) < 0)
1342 return AVERROR(ENOMEM);
1344 assert(!s->packet_buffer);
1345 return read_frame_internal(s, pkt);
1350 /* XXX: suppress the packet queue */
1351 static void flush_packet_queue(AVFormatContext *s)
1356 pktl = s->packet_buffer;
1359 s->packet_buffer = pktl->next;
1360 av_free_packet(&pktl->pkt);
1363 while(s->raw_packet_buffer){
1364 pktl = s->raw_packet_buffer;
1365 s->raw_packet_buffer = pktl->next;
1366 av_free_packet(&pktl->pkt);
1369 s->packet_buffer_end=
1370 s->raw_packet_buffer_end= NULL;
1371 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1374 /*******************************************************/
1377 int av_find_default_stream_index(AVFormatContext *s)
1379 int first_audio_index = -1;
1383 if (s->nb_streams <= 0)
1385 for(i = 0; i < s->nb_streams; i++) {
1387 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1390 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1391 first_audio_index = i;
1393 return first_audio_index >= 0 ? first_audio_index : 0;
1397 * Flush the frame reader.
1399 void ff_read_frame_flush(AVFormatContext *s)
1404 flush_packet_queue(s);
1408 /* for each stream, reset read state */
1409 for(i = 0; i < s->nb_streams; i++) {
1413 av_parser_close(st->parser);
1415 av_free_packet(&st->cur_pkt);
1417 st->last_IP_pts = AV_NOPTS_VALUE;
1418 st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1419 st->reference_dts = AV_NOPTS_VALUE;
1424 st->probe_packets = MAX_PROBE_PACKETS;
1426 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1427 st->pts_buffer[j]= AV_NOPTS_VALUE;
1431 #if FF_API_SEEK_PUBLIC
1432 void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1434 return ff_update_cur_dts(s, ref_st, timestamp);
1438 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1442 for(i = 0; i < s->nb_streams; i++) {
1443 AVStream *st = s->streams[i];
1445 st->cur_dts = av_rescale(timestamp,
1446 st->time_base.den * (int64_t)ref_st->time_base.num,
1447 st->time_base.num * (int64_t)ref_st->time_base.den);
1451 void ff_reduce_index(AVFormatContext *s, int stream_index)
1453 AVStream *st= s->streams[stream_index];
1454 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1456 if((unsigned)st->nb_index_entries >= max_entries){
1458 for(i=0; 2*i<st->nb_index_entries; i++)
1459 st->index_entries[i]= st->index_entries[2*i];
1460 st->nb_index_entries= i;
1464 int ff_add_index_entry(AVIndexEntry **index_entries,
1465 int *nb_index_entries,
1466 unsigned int *index_entries_allocated_size,
1467 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1469 AVIndexEntry *entries, *ie;
1472 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1475 entries = av_fast_realloc(*index_entries,
1476 index_entries_allocated_size,
1477 (*nb_index_entries + 1) *
1478 sizeof(AVIndexEntry));
1482 *index_entries= entries;
1484 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1487 index= (*nb_index_entries)++;
1488 ie= &entries[index];
1489 assert(index==0 || ie[-1].timestamp < timestamp);
1491 ie= &entries[index];
1492 if(ie->timestamp != timestamp){
1493 if(ie->timestamp <= timestamp)
1495 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1496 (*nb_index_entries)++;
1497 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1498 distance= ie->min_distance;
1502 ie->timestamp = timestamp;
1503 ie->min_distance= distance;
1510 int av_add_index_entry(AVStream *st,
1511 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1513 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1514 &st->index_entries_allocated_size, pos,
1515 timestamp, size, distance, flags);
1518 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1519 int64_t wanted_timestamp, int flags)
1527 //optimize appending index entries at the end
1528 if(b && entries[b-1].timestamp < wanted_timestamp)
1533 timestamp = entries[m].timestamp;
1534 if(timestamp >= wanted_timestamp)
1536 if(timestamp <= wanted_timestamp)
1539 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1541 if(!(flags & AVSEEK_FLAG_ANY)){
1542 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1543 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1552 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1555 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1556 wanted_timestamp, flags);
1559 #if FF_API_SEEK_PUBLIC
1560 int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
1561 return ff_seek_frame_binary(s, stream_index, target_ts, flags);
1565 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1567 AVInputFormat *avif= s->iformat;
1568 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1569 int64_t ts_min, ts_max, ts;
1574 if (stream_index < 0)
1577 av_dlog(s, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
1580 ts_min= AV_NOPTS_VALUE;
1581 pos_limit= -1; //gcc falsely says it may be uninitialized
1583 st= s->streams[stream_index];
1584 if(st->index_entries){
1587 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()
1588 index= FFMAX(index, 0);
1589 e= &st->index_entries[index];
1591 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1593 ts_min= e->timestamp;
1594 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
1600 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1601 assert(index < st->nb_index_entries);
1603 e= &st->index_entries[index];
1604 assert(e->timestamp >= target_ts);
1606 ts_max= e->timestamp;
1607 pos_limit= pos_max - e->min_distance;
1608 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
1609 pos_max,pos_limit, ts_max);
1613 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1618 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1621 ff_read_frame_flush(s);
1622 ff_update_cur_dts(s, st, ts);
1627 #if FF_API_SEEK_PUBLIC
1628 int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1629 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1630 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1631 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1633 return ff_gen_search(s, stream_index, target_ts, pos_min, pos_max,
1634 pos_limit, ts_min, ts_max, flags, ts_ret,
1639 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1640 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1641 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1642 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1645 int64_t start_pos, filesize;
1648 av_dlog(s, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
1650 if(ts_min == AV_NOPTS_VALUE){
1651 pos_min = s->data_offset;
1652 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1653 if (ts_min == AV_NOPTS_VALUE)
1657 if(ts_min >= target_ts){
1662 if(ts_max == AV_NOPTS_VALUE){
1664 filesize = avio_size(s->pb);
1665 pos_max = filesize - 1;
1668 ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
1670 }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
1671 if (ts_max == AV_NOPTS_VALUE)
1675 int64_t tmp_pos= pos_max + 1;
1676 int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
1677 if(tmp_ts == AV_NOPTS_VALUE)
1681 if(tmp_pos >= filesize)
1687 if(ts_max <= target_ts){
1692 if(ts_min > ts_max){
1694 }else if(ts_min == ts_max){
1699 while (pos_min < pos_limit) {
1700 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
1701 pos_min, pos_max, ts_min, ts_max);
1702 assert(pos_limit <= pos_max);
1705 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1706 // interpolate position (better than dichotomy)
1707 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1708 + pos_min - approximate_keyframe_distance;
1709 }else if(no_change==1){
1710 // bisection, if interpolation failed to change min or max pos last time
1711 pos = (pos_min + pos_limit)>>1;
1713 /* linear search if bisection failed, can only happen if there
1714 are very few or no keyframes between min/max */
1719 else if(pos > pos_limit)
1723 ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
1728 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n",
1729 pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts,
1730 pos_limit, start_pos, no_change);
1731 if(ts == AV_NOPTS_VALUE){
1732 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1735 assert(ts != AV_NOPTS_VALUE);
1736 if (target_ts <= ts) {
1737 pos_limit = start_pos - 1;
1741 if (target_ts >= ts) {
1747 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1748 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1751 ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1753 ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
1754 av_dlog(s, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
1755 pos, ts_min, target_ts, ts_max);
1761 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1762 int64_t pos_min, pos_max;
1766 if (stream_index < 0)
1769 st= s->streams[stream_index];
1772 pos_min = s->data_offset;
1773 pos_max = avio_size(s->pb) - 1;
1775 if (pos < pos_min) pos= pos_min;
1776 else if(pos > pos_max) pos= pos_max;
1778 avio_seek(s->pb, pos, SEEK_SET);
1781 av_update_cur_dts(s, st, ts);
1786 static int seek_frame_generic(AVFormatContext *s,
1787 int stream_index, int64_t timestamp, int flags)
1794 st = s->streams[stream_index];
1796 index = av_index_search_timestamp(st, timestamp, flags);
1798 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1801 if(index < 0 || index==st->nb_index_entries-1){
1805 if(st->nb_index_entries){
1806 assert(st->index_entries);
1807 ie= &st->index_entries[st->nb_index_entries-1];
1808 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1810 ff_update_cur_dts(s, st, ie->timestamp);
1812 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1818 read_status = av_read_frame(s, &pkt);
1819 } while (read_status == AVERROR(EAGAIN));
1820 if (read_status < 0)
1822 av_free_packet(&pkt);
1823 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1824 if(pkt.flags & AV_PKT_FLAG_KEY)
1826 if(nonkey++ > 1000){
1827 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);
1832 index = av_index_search_timestamp(st, timestamp, flags);
1837 ff_read_frame_flush(s);
1838 AV_NOWARN_DEPRECATED(
1839 if (s->iformat->read_seek){
1840 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1844 ie = &st->index_entries[index];
1845 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1847 ff_update_cur_dts(s, st, ie->timestamp);
1852 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
1857 if (flags & AVSEEK_FLAG_BYTE) {
1858 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1860 ff_read_frame_flush(s);
1861 return seek_frame_byte(s, stream_index, timestamp, flags);
1864 if(stream_index < 0){
1865 stream_index= av_find_default_stream_index(s);
1866 if(stream_index < 0)
1869 st= s->streams[stream_index];
1870 /* timestamp for default must be expressed in AV_TIME_BASE units */
1871 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1874 /* first, we try the format specific seek */
1875 AV_NOWARN_DEPRECATED(
1876 if (s->iformat->read_seek) {
1877 ff_read_frame_flush(s);
1878 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
1886 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
1887 ff_read_frame_flush(s);
1888 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
1889 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
1890 ff_read_frame_flush(s);
1891 return seek_frame_generic(s, stream_index, timestamp, flags);
1897 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
1899 if(min_ts > ts || max_ts < ts)
1902 if (s->iformat->read_seek2) {
1903 ff_read_frame_flush(s);
1904 return s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
1907 if(s->iformat->read_timestamp){
1908 //try to seek via read_timestamp()
1911 //Fallback to old API if new is not implemented but old is
1912 //Note the old has somewat different sematics
1913 AV_NOWARN_DEPRECATED(
1914 if(s->iformat->read_seek || 1)
1915 return av_seek_frame(s, stream_index, ts, flags | (ts - min_ts > (uint64_t)(max_ts - ts) ? AVSEEK_FLAG_BACKWARD : 0));
1918 // try some generic seek like seek_frame_generic() but with new ts semantics
1921 /*******************************************************/
1924 * Return TRUE if the stream has accurate duration in any stream.
1926 * @return TRUE if the stream has accurate duration for at least one component.
1928 static int has_duration(AVFormatContext *ic)
1932 if(ic->duration != AV_NOPTS_VALUE)
1935 for(i = 0;i < ic->nb_streams; i++) {
1936 st = ic->streams[i];
1937 if (st->duration != AV_NOPTS_VALUE)
1944 * Estimate the stream timings from the one of each components.
1946 * Also computes the global bitrate if possible.
1948 static void update_stream_timings(AVFormatContext *ic)
1950 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
1951 int64_t duration, duration1, filesize;
1955 start_time = INT64_MAX;
1956 start_time_text = INT64_MAX;
1957 end_time = INT64_MIN;
1958 duration = INT64_MIN;
1959 for(i = 0;i < ic->nb_streams; i++) {
1960 st = ic->streams[i];
1961 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
1962 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
1963 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1964 if (start_time1 < start_time_text)
1965 start_time_text = start_time1;
1967 start_time = FFMIN(start_time, start_time1);
1968 if (st->duration != AV_NOPTS_VALUE) {
1969 end_time1 = start_time1
1970 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1971 end_time = FFMAX(end_time, end_time1);
1974 if (st->duration != AV_NOPTS_VALUE) {
1975 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
1976 duration = FFMAX(duration, duration1);
1979 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
1980 start_time = start_time_text;
1981 if (start_time != INT64_MAX) {
1982 ic->start_time = start_time;
1983 if (end_time != INT64_MIN)
1984 duration = FFMAX(duration, end_time - start_time);
1986 if (duration != INT64_MIN && ic->duration == AV_NOPTS_VALUE) {
1987 ic->duration = duration;
1989 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
1990 /* compute the bitrate */
1991 ic->bit_rate = (double)filesize * 8.0 * AV_TIME_BASE /
1992 (double)ic->duration;
1996 static void fill_all_stream_timings(AVFormatContext *ic)
2001 update_stream_timings(ic);
2002 for(i = 0;i < ic->nb_streams; i++) {
2003 st = ic->streams[i];
2004 if (st->start_time == AV_NOPTS_VALUE) {
2005 if(ic->start_time != AV_NOPTS_VALUE)
2006 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2007 if(ic->duration != AV_NOPTS_VALUE)
2008 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2013 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2015 int64_t filesize, duration;
2019 /* if bit_rate is already set, we believe it */
2020 if (ic->bit_rate <= 0) {
2022 for(i=0;i<ic->nb_streams;i++) {
2023 st = ic->streams[i];
2024 if (st->codec->bit_rate > 0)
2025 bit_rate += st->codec->bit_rate;
2027 ic->bit_rate = bit_rate;
2030 /* if duration is already set, we believe it */
2031 if (ic->duration == AV_NOPTS_VALUE &&
2032 ic->bit_rate != 0) {
2033 filesize = ic->pb ? avio_size(ic->pb) : 0;
2035 for(i = 0; i < ic->nb_streams; i++) {
2036 st = ic->streams[i];
2037 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2038 if (st->duration == AV_NOPTS_VALUE)
2039 st->duration = duration;
2045 #define DURATION_MAX_READ_SIZE 250000
2046 #define DURATION_MAX_RETRY 3
2048 /* only usable for MPEG-PS streams */
2049 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2051 AVPacket pkt1, *pkt = &pkt1;
2053 int read_size, i, ret;
2055 int64_t filesize, offset, duration;
2060 /* flush packet queue */
2061 flush_packet_queue(ic);
2063 for (i=0; i<ic->nb_streams; i++) {
2064 st = ic->streams[i];
2065 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2066 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2069 av_parser_close(st->parser);
2071 av_free_packet(&st->cur_pkt);
2075 /* estimate the end time (duration) */
2076 /* XXX: may need to support wrapping */
2077 filesize = ic->pb ? avio_size(ic->pb) : 0;
2078 end_time = AV_NOPTS_VALUE;
2080 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2084 avio_seek(ic->pb, offset, SEEK_SET);
2087 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2091 ret = av_read_packet(ic, pkt);
2092 } while(ret == AVERROR(EAGAIN));
2095 read_size += pkt->size;
2096 st = ic->streams[pkt->stream_index];
2097 if (pkt->pts != AV_NOPTS_VALUE &&
2098 (st->start_time != AV_NOPTS_VALUE ||
2099 st->first_dts != AV_NOPTS_VALUE)) {
2100 duration = end_time = pkt->pts;
2101 if (st->start_time != AV_NOPTS_VALUE)
2102 duration -= st->start_time;
2104 duration -= st->first_dts;
2106 duration += 1LL<<st->pts_wrap_bits;
2108 if (st->duration == AV_NOPTS_VALUE || st->duration < duration)
2109 st->duration = duration;
2112 av_free_packet(pkt);
2114 }while( end_time==AV_NOPTS_VALUE
2115 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2116 && ++retry <= DURATION_MAX_RETRY);
2118 fill_all_stream_timings(ic);
2120 avio_seek(ic->pb, old_offset, SEEK_SET);
2121 for (i=0; i<ic->nb_streams; i++) {
2123 st->cur_dts= st->first_dts;
2124 st->last_IP_pts = AV_NOPTS_VALUE;
2125 st->reference_dts = AV_NOPTS_VALUE;
2129 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2133 /* get the file size, if possible */
2134 if (ic->iformat->flags & AVFMT_NOFILE) {
2137 file_size = avio_size(ic->pb);
2138 file_size = FFMAX(0, file_size);
2141 if ((!strcmp(ic->iformat->name, "mpeg") ||
2142 !strcmp(ic->iformat->name, "mpegts")) &&
2143 file_size && ic->pb->seekable) {
2144 /* get accurate estimate from the PTSes */
2145 estimate_timings_from_pts(ic, old_offset);
2146 } else if (has_duration(ic)) {
2147 /* at least one component has timings - we use them for all
2149 fill_all_stream_timings(ic);
2151 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2152 /* less precise: use bitrate info */
2153 estimate_timings_from_bit_rate(ic);
2155 update_stream_timings(ic);
2159 AVStream av_unused *st;
2160 for(i = 0;i < ic->nb_streams; i++) {
2161 st = ic->streams[i];
2162 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2163 (double) st->start_time / AV_TIME_BASE,
2164 (double) st->duration / AV_TIME_BASE);
2166 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2167 (double) ic->start_time / AV_TIME_BASE,
2168 (double) ic->duration / AV_TIME_BASE,
2169 ic->bit_rate / 1000);
2173 static int has_codec_parameters(AVCodecContext *avctx)
2176 switch (avctx->codec_type) {
2177 case AVMEDIA_TYPE_AUDIO:
2178 val = avctx->sample_rate && avctx->channels && avctx->sample_fmt != AV_SAMPLE_FMT_NONE;
2179 if (!avctx->frame_size &&
2180 (avctx->codec_id == CODEC_ID_VORBIS ||
2181 avctx->codec_id == CODEC_ID_AAC ||
2182 avctx->codec_id == CODEC_ID_MP1 ||
2183 avctx->codec_id == CODEC_ID_MP2 ||
2184 avctx->codec_id == CODEC_ID_MP3 ||
2185 avctx->codec_id == CODEC_ID_CELT))
2188 case AVMEDIA_TYPE_VIDEO:
2189 val = avctx->width && avctx->pix_fmt != PIX_FMT_NONE;
2191 case AVMEDIA_TYPE_DATA:
2192 if(avctx->codec_id == CODEC_ID_NONE) return 1;
2197 return avctx->codec_id != CODEC_ID_NONE && val != 0;
2200 static int has_decode_delay_been_guessed(AVStream *st)
2202 return st->codec->codec_id != CODEC_ID_H264 ||
2203 st->info->nb_decoded_frames >= 6;
2206 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2210 int got_picture, data_size, ret=0;
2213 if(!st->codec->codec){
2214 codec = avcodec_find_decoder(st->codec->codec_id);
2217 ret = avcodec_open2(st->codec, codec, options);
2222 if(!has_codec_parameters(st->codec) || !has_decode_delay_been_guessed(st) ||
2223 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF)) {
2224 switch(st->codec->codec_type) {
2225 case AVMEDIA_TYPE_VIDEO:
2226 avcodec_get_frame_defaults(&picture);
2227 ret = avcodec_decode_video2(st->codec, &picture,
2228 &got_picture, avpkt);
2230 st->info->nb_decoded_frames++;
2232 case AVMEDIA_TYPE_AUDIO:
2233 data_size = FFMAX(avpkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
2234 samples = av_malloc(data_size);
2237 ret = avcodec_decode_audio3(st->codec, samples,
2249 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum CodecID id)
2251 while (tags->id != CODEC_ID_NONE) {
2259 enum CodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2262 for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
2263 if(tag == tags[i].tag)
2266 for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
2267 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2270 return CODEC_ID_NONE;
2273 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
2276 for(i=0; tags && tags[i]; i++){
2277 int tag= ff_codec_get_tag(tags[i], id);
2283 enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2286 for(i=0; tags && tags[i]; i++){
2287 enum CodecID id= ff_codec_get_id(tags[i], tag);
2288 if(id!=CODEC_ID_NONE) return id;
2290 return CODEC_ID_NONE;
2293 static void compute_chapters_end(AVFormatContext *s)
2296 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2298 for (i = 0; i < s->nb_chapters; i++)
2299 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2300 AVChapter *ch = s->chapters[i];
2301 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2304 for (j = 0; j < s->nb_chapters; j++) {
2305 AVChapter *ch1 = s->chapters[j];
2306 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2307 if (j != i && next_start > ch->start && next_start < end)
2310 ch->end = (end == INT64_MAX) ? ch->start : end;
2314 static int get_std_framerate(int i){
2315 if(i<60*12) return i*1001;
2316 else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
2320 * Is the time base unreliable.
2321 * This is a heuristic to balance between quick acceptance of the values in
2322 * the headers vs. some extra checks.
2323 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2324 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2325 * And there are "variable" fps files this needs to detect as well.
2327 static int tb_unreliable(AVCodecContext *c){
2328 if( c->time_base.den >= 101L*c->time_base.num
2329 || c->time_base.den < 5L*c->time_base.num
2330 /* || c->codec_tag == AV_RL32("DIVX")
2331 || c->codec_tag == AV_RL32("XVID")*/
2332 || c->codec_id == CODEC_ID_MPEG2VIDEO
2333 || c->codec_id == CODEC_ID_H264
2339 #if FF_API_FORMAT_PARAMETERS
2340 int av_find_stream_info(AVFormatContext *ic)
2342 return avformat_find_stream_info(ic, NULL);
2346 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2348 int i, count, ret, read_size, j;
2350 AVPacket pkt1, *pkt;
2351 int64_t old_offset = avio_tell(ic->pb);
2352 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2354 for(i=0;i<ic->nb_streams;i++) {
2356 st = ic->streams[i];
2358 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2359 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2360 /* if(!st->time_base.num)
2362 if(!st->codec->time_base.num)
2363 st->codec->time_base= st->time_base;
2365 //only for the split stuff
2366 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2367 st->parser = av_parser_init(st->codec->codec_id);
2368 if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
2369 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2372 assert(!st->codec->codec);
2373 codec = avcodec_find_decoder(st->codec->codec_id);
2375 /* Ensure that subtitle_header is properly set. */
2376 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2377 && codec && !st->codec->codec)
2378 avcodec_open2(st->codec, codec, options ? &options[i] : NULL);
2380 //try to just open decoders, in case this is enough to get parameters
2381 if(!has_codec_parameters(st->codec)){
2382 if (codec && !st->codec->codec){
2383 AVDictionary *tmp = NULL;
2385 av_dict_copy(&tmp, options[i], 0);
2386 av_dict_set(&tmp, "threads", 0, 0);
2388 avcodec_open2(st->codec, codec, options ? &tmp : NULL);
2394 for (i=0; i<ic->nb_streams; i++) {
2395 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2401 if(url_interrupt_cb()){
2403 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2407 /* check if one codec still needs to be handled */
2408 for(i=0;i<ic->nb_streams;i++) {
2409 int fps_analyze_framecount = 20;
2411 st = ic->streams[i];
2412 if (!has_codec_parameters(st->codec))
2414 /* if the timebase is coarse (like the usual millisecond precision
2415 of mkv), we need to analyze more frames to reliably arrive at
2417 if (av_q2d(st->time_base) > 0.0005)
2418 fps_analyze_framecount *= 2;
2419 if (ic->fps_probe_size >= 0)
2420 fps_analyze_framecount = ic->fps_probe_size;
2421 /* variable fps and no guess at the real fps */
2422 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2423 && st->info->duration_count < fps_analyze_framecount
2424 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2426 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2428 if(st->first_dts == AV_NOPTS_VALUE && (st->codec->codec_type == AVMEDIA_TYPE_VIDEO || st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2431 if (i == ic->nb_streams) {
2432 /* NOTE: if the format has no header, then we need to read
2433 some packets to get most of the streams, so we cannot
2435 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2436 /* if we found the info for all the codecs, we can stop */
2438 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2442 /* we did not get all the codec info, but we read too much data */
2443 if (read_size >= ic->probesize) {
2445 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit %d reached\n", ic->probesize);
2449 /* NOTE: a new stream can be added there if no header in file
2450 (AVFMTCTX_NOHEADER) */
2451 ret = read_frame_internal(ic, &pkt1);
2452 if (ret == AVERROR(EAGAIN))
2457 ret = -1; /* we could not have all the codec parameters before EOF */
2458 for(i=0;i<ic->nb_streams;i++) {
2459 st = ic->streams[i];
2460 if (!has_codec_parameters(st->codec)){
2462 avcodec_string(buf, sizeof(buf), st->codec, 0);
2463 av_log(ic, AV_LOG_WARNING, "Could not find codec parameters (%s)\n", buf);
2471 pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
2472 if ((ret = av_dup_packet(pkt)) < 0)
2473 goto find_stream_info_err;
2475 read_size += pkt->size;
2477 st = ic->streams[pkt->stream_index];
2478 if (st->codec_info_nb_frames>1) {
2480 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) {
2481 av_log(ic, AV_LOG_WARNING, "max_analyze_duration %d reached at %"PRId64"\n", ic->max_analyze_duration, t);
2484 st->info->codec_info_duration += pkt->duration;
2487 int64_t last = st->info->last_dts;
2489 if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last){
2490 double dts= pkt->dts * av_q2d(st->time_base);
2491 int64_t duration= pkt->dts - last;
2493 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2494 // av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
2495 for (i=1; i<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); i++) {
2496 int framerate= get_std_framerate(i);
2497 double sdts= dts*framerate/(1001*12);
2499 int ticks= lrintf(sdts+j*0.5);
2500 double error= sdts - ticks + j*0.5;
2501 st->info->duration_error[j][0][i] += error;
2502 st->info->duration_error[j][1][i] += error*error;
2505 st->info->duration_count++;
2506 // ignore the first 4 values, they might have some random jitter
2507 if (st->info->duration_count > 3)
2508 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2510 if (last == AV_NOPTS_VALUE || st->info->duration_count <= 1)
2511 st->info->last_dts = pkt->dts;
2513 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2514 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2516 st->codec->extradata_size= i;
2517 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2518 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2519 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2523 /* if still no information, we try to open the codec and to
2524 decompress the frame. We try to avoid that in most cases as
2525 it takes longer and uses more memory. For MPEG-4, we need to
2526 decompress for QuickTime.
2528 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2529 least one frame of codec data, this makes sure the codec initializes
2530 the channel configuration and does not only trust the values from the container.
2532 try_decode_frame(st, pkt, (options && i < orig_nb_streams )? &options[i] : NULL);
2534 st->codec_info_nb_frames++;
2538 // close codecs which were opened in try_decode_frame()
2539 for(i=0;i<ic->nb_streams;i++) {
2540 st = ic->streams[i];
2541 if(st->codec->codec)
2542 avcodec_close(st->codec);
2544 for(i=0;i<ic->nb_streams;i++) {
2545 st = ic->streams[i];
2546 if (st->codec_info_nb_frames>2 && !st->avg_frame_rate.num && st->info->codec_info_duration)
2547 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2548 (st->codec_info_nb_frames-2)*(int64_t)st->time_base.den,
2549 st->info->codec_info_duration*(int64_t)st->time_base.num, 60000);
2550 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2551 if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2552 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2553 if(ff_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2554 st->codec->codec_tag= tag;
2557 // the check for tb_unreliable() is not completely correct, since this is not about handling
2558 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2559 // ipmovie.c produces.
2560 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)
2561 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);
2562 if (st->info->duration_count && !st->r_frame_rate.num
2563 && tb_unreliable(st->codec) /*&&
2564 //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
2565 st->time_base.num*duration_sum[i]/st->info->duration_count*101LL > st->time_base.den*/){
2567 double best_error= 0.01;
2569 for (j=1; j<FF_ARRAY_ELEMS(st->info->duration_error[0][0]); j++) {
2572 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2575 int n= st->info->duration_count;
2576 double a= st->info->duration_error[k][0][j] / n;
2577 double error= st->info->duration_error[k][1][j]/n - a*a;
2579 if(error < best_error && best_error> 0.000000001){
2581 num = get_std_framerate(j);
2584 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2587 // do not increase frame rate by more than 1 % in order to match a standard rate.
2588 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2589 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2592 if (!st->r_frame_rate.num){
2593 if( st->codec->time_base.den * (int64_t)st->time_base.num
2594 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
2595 st->r_frame_rate.num = st->codec->time_base.den;
2596 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
2598 st->r_frame_rate.num = st->time_base.den;
2599 st->r_frame_rate.den = st->time_base.num;
2602 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2603 if(!st->codec->bits_per_coded_sample)
2604 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
2605 // set stream disposition based on audio service type
2606 switch (st->codec->audio_service_type) {
2607 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
2608 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
2609 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
2610 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
2611 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
2612 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
2613 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
2614 st->disposition = AV_DISPOSITION_COMMENT; break;
2615 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
2616 st->disposition = AV_DISPOSITION_KARAOKE; break;
2621 estimate_timings(ic, old_offset);
2623 compute_chapters_end(ic);
2626 /* correct DTS for B-frame streams with no timestamps */
2627 for(i=0;i<ic->nb_streams;i++) {
2628 st = ic->streams[i];
2629 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2631 ppktl = &ic->packet_buffer;
2633 if(ppkt1->stream_index != i)
2635 if(ppkt1->pkt->dts < 0)
2637 if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
2639 ppkt1->pkt->dts -= delta;
2644 st->cur_dts -= delta;
2650 find_stream_info_err:
2651 for (i=0; i < ic->nb_streams; i++)
2652 av_freep(&ic->streams[i]->info);
2656 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
2660 for (i = 0; i < ic->nb_programs; i++) {
2661 if (ic->programs[i] == last) {
2665 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
2666 if (ic->programs[i]->stream_index[j] == s)
2667 return ic->programs[i];
2673 int av_find_best_stream(AVFormatContext *ic,
2674 enum AVMediaType type,
2675 int wanted_stream_nb,
2677 AVCodec **decoder_ret,
2680 int i, nb_streams = ic->nb_streams;
2681 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1;
2682 unsigned *program = NULL;
2683 AVCodec *decoder = NULL, *best_decoder = NULL;
2685 if (related_stream >= 0 && wanted_stream_nb < 0) {
2686 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
2688 program = p->stream_index;
2689 nb_streams = p->nb_stream_indexes;
2692 for (i = 0; i < nb_streams; i++) {
2693 int real_stream_index = program ? program[i] : i;
2694 AVStream *st = ic->streams[real_stream_index];
2695 AVCodecContext *avctx = st->codec;
2696 if (avctx->codec_type != type)
2698 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
2700 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
2703 decoder = avcodec_find_decoder(st->codec->codec_id);
2706 ret = AVERROR_DECODER_NOT_FOUND;
2710 if (best_count >= st->codec_info_nb_frames)
2712 best_count = st->codec_info_nb_frames;
2713 ret = real_stream_index;
2714 best_decoder = decoder;
2715 if (program && i == nb_streams - 1 && ret < 0) {
2717 nb_streams = ic->nb_streams;
2718 i = 0; /* no related stream found, try again with everything */
2722 *decoder_ret = best_decoder;
2726 /*******************************************************/
2728 int av_read_play(AVFormatContext *s)
2730 if (s->iformat->read_play)
2731 return s->iformat->read_play(s);
2733 return avio_pause(s->pb, 0);
2734 return AVERROR(ENOSYS);
2737 int av_read_pause(AVFormatContext *s)
2739 if (s->iformat->read_pause)
2740 return s->iformat->read_pause(s);
2742 return avio_pause(s->pb, 1);
2743 return AVERROR(ENOSYS);
2746 void av_close_input_stream(AVFormatContext *s)
2748 flush_packet_queue(s);
2749 if (s->iformat->read_close)
2750 s->iformat->read_close(s);
2751 avformat_free_context(s);
2754 void avformat_free_context(AVFormatContext *s)
2760 if (s->iformat && s->iformat->priv_class && s->priv_data)
2761 av_opt_free(s->priv_data);
2763 for(i=0;i<s->nb_streams;i++) {
2764 /* free all data in a stream component */
2767 av_parser_close(st->parser);
2768 av_free_packet(&st->cur_pkt);
2770 av_dict_free(&st->metadata);
2771 av_freep(&st->index_entries);
2772 av_freep(&st->codec->extradata);
2773 av_freep(&st->codec->subtitle_header);
2774 av_freep(&st->codec);
2775 av_freep(&st->priv_data);
2776 av_freep(&st->info);
2779 for(i=s->nb_programs-1; i>=0; i--) {
2780 av_dict_free(&s->programs[i]->metadata);
2781 av_freep(&s->programs[i]->stream_index);
2782 av_freep(&s->programs[i]);
2784 av_freep(&s->programs);
2785 av_freep(&s->priv_data);
2786 while(s->nb_chapters--) {
2787 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
2788 av_freep(&s->chapters[s->nb_chapters]);
2790 av_freep(&s->chapters);
2791 av_dict_free(&s->metadata);
2792 av_freep(&s->streams);
2796 void av_close_input_file(AVFormatContext *s)
2798 AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
2800 av_close_input_stream(s);
2805 #if FF_API_NEW_STREAM
2806 AVStream *av_new_stream(AVFormatContext *s, int id)
2808 AVStream *st = avformat_new_stream(s, NULL);
2815 AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
2821 if (s->nb_streams >= INT_MAX/sizeof(*streams))
2823 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
2826 s->streams = streams;
2828 st = av_mallocz(sizeof(AVStream));
2831 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
2836 st->codec = avcodec_alloc_context3(c);
2838 /* no default bitrate if decoding */
2839 st->codec->bit_rate = 0;
2841 st->index = s->nb_streams;
2842 st->start_time = AV_NOPTS_VALUE;
2843 st->duration = AV_NOPTS_VALUE;
2844 /* we set the current DTS to 0 so that formats without any timestamps
2845 but durations get some timestamps, formats with some unknown
2846 timestamps have their first few packets buffered and the
2847 timestamps corrected before they are returned to the user */
2849 st->first_dts = AV_NOPTS_VALUE;
2850 st->probe_packets = MAX_PROBE_PACKETS;
2852 /* default pts setting is MPEG-like */
2853 av_set_pts_info(st, 33, 1, 90000);
2854 st->last_IP_pts = AV_NOPTS_VALUE;
2855 for(i=0; i<MAX_REORDER_DELAY+1; i++)
2856 st->pts_buffer[i]= AV_NOPTS_VALUE;
2857 st->reference_dts = AV_NOPTS_VALUE;
2859 st->sample_aspect_ratio = (AVRational){0,1};
2861 s->streams[s->nb_streams++] = st;
2865 AVProgram *av_new_program(AVFormatContext *ac, int id)
2867 AVProgram *program=NULL;
2870 av_dlog(ac, "new_program: id=0x%04x\n", id);
2872 for(i=0; i<ac->nb_programs; i++)
2873 if(ac->programs[i]->id == id)
2874 program = ac->programs[i];
2877 program = av_mallocz(sizeof(AVProgram));
2880 dynarray_add(&ac->programs, &ac->nb_programs, program);
2881 program->discard = AVDISCARD_NONE;
2888 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
2890 AVChapter *chapter = NULL;
2893 for(i=0; i<s->nb_chapters; i++)
2894 if(s->chapters[i]->id == id)
2895 chapter = s->chapters[i];
2898 chapter= av_mallocz(sizeof(AVChapter));
2901 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
2903 av_dict_set(&chapter->metadata, "title", title, 0);
2905 chapter->time_base= time_base;
2906 chapter->start = start;
2912 /************************************************************/
2913 /* output media file */
2915 #if FF_API_FORMAT_PARAMETERS
2916 int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
2918 if (s->oformat->priv_data_size > 0) {
2919 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2921 return AVERROR(ENOMEM);
2922 if (s->oformat->priv_class) {
2923 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2924 av_opt_set_defaults(s->priv_data);
2927 s->priv_data = NULL;
2933 int avformat_alloc_output_context2(AVFormatContext **avctx, AVOutputFormat *oformat,
2934 const char *format, const char *filename)
2936 AVFormatContext *s = avformat_alloc_context();
2945 oformat = av_guess_format(format, NULL, NULL);
2947 av_log(s, AV_LOG_ERROR, "Requested output format '%s' is not a suitable output format\n", format);
2948 ret = AVERROR(EINVAL);
2952 oformat = av_guess_format(NULL, filename, NULL);
2954 ret = AVERROR(EINVAL);
2955 av_log(s, AV_LOG_ERROR, "Unable to find a suitable output format for '%s'\n",
2962 s->oformat = oformat;
2963 if (s->oformat->priv_data_size > 0) {
2964 s->priv_data = av_mallocz(s->oformat->priv_data_size);
2967 if (s->oformat->priv_class) {
2968 *(const AVClass**)s->priv_data= s->oformat->priv_class;
2969 av_opt_set_defaults(s->priv_data);
2972 s->priv_data = NULL;
2975 av_strlcpy(s->filename, filename, sizeof(s->filename));
2979 av_log(s, AV_LOG_ERROR, "Out of memory\n");
2980 ret = AVERROR(ENOMEM);
2982 avformat_free_context(s);
2986 #if FF_API_ALLOC_OUTPUT_CONTEXT
2987 AVFormatContext *avformat_alloc_output_context(const char *format,
2988 AVOutputFormat *oformat, const char *filename)
2990 AVFormatContext *avctx;
2991 int ret = avformat_alloc_output_context2(&avctx, oformat, format, filename);
2992 return ret < 0 ? NULL : avctx;
2996 static int validate_codec_tag(AVFormatContext *s, AVStream *st)
2998 const AVCodecTag *avctag;
3000 enum CodecID id = CODEC_ID_NONE;
3001 unsigned int tag = 0;
3004 * Check that tag + id is in the table
3005 * If neither is in the table -> OK
3006 * If tag is in the table with another id -> FAIL
3007 * If id is in the table with another tag -> FAIL unless strict < normal
3009 for (n = 0; s->oformat->codec_tag[n]; n++) {
3010 avctag = s->oformat->codec_tag[n];
3011 while (avctag->id != CODEC_ID_NONE) {
3012 if (avpriv_toupper4(avctag->tag) == avpriv_toupper4(st->codec->codec_tag)) {
3014 if (id == st->codec->codec_id)
3017 if (avctag->id == st->codec->codec_id)
3022 if (id != CODEC_ID_NONE)
3024 if (tag && (st->codec->strict_std_compliance >= FF_COMPLIANCE_NORMAL))
3029 #if FF_API_FORMAT_PARAMETERS
3030 int av_write_header(AVFormatContext *s)
3032 return avformat_write_header(s, NULL);
3036 int avformat_write_header(AVFormatContext *s, AVDictionary **options)
3040 AVDictionary *tmp = NULL;
3043 av_dict_copy(&tmp, *options, 0);
3044 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
3046 if (s->priv_data && s->oformat->priv_class && *(const AVClass**)s->priv_data==s->oformat->priv_class &&
3047 (ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3050 // some sanity checks
3051 if (s->nb_streams == 0 && !(s->oformat->flags & AVFMT_NOSTREAMS)) {
3052 av_log(s, AV_LOG_ERROR, "no streams\n");
3053 ret = AVERROR(EINVAL);
3057 for(i=0;i<s->nb_streams;i++) {
3060 switch (st->codec->codec_type) {
3061 case AVMEDIA_TYPE_AUDIO:
3062 if(st->codec->sample_rate<=0){
3063 av_log(s, AV_LOG_ERROR, "sample rate not set\n");
3064 ret = AVERROR(EINVAL);
3067 if(!st->codec->block_align)
3068 st->codec->block_align = st->codec->channels *
3069 av_get_bits_per_sample(st->codec->codec_id) >> 3;
3071 case AVMEDIA_TYPE_VIDEO:
3072 if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
3073 av_log(s, AV_LOG_ERROR, "time base not set\n");
3074 ret = AVERROR(EINVAL);
3077 if((st->codec->width<=0 || st->codec->height<=0) && !(s->oformat->flags & AVFMT_NODIMENSIONS)){
3078 av_log(s, AV_LOG_ERROR, "dimensions not set\n");
3079 ret = AVERROR(EINVAL);
3082 if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)
3083 && FFABS(av_q2d(st->sample_aspect_ratio) - av_q2d(st->codec->sample_aspect_ratio)) > 0.004*av_q2d(st->sample_aspect_ratio)
3085 av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
3086 ret = AVERROR(EINVAL);
3092 if(s->oformat->codec_tag){
3093 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)){
3094 //the current rawvideo encoding system ends up setting the wrong codec_tag for avi, we override it here
3095 st->codec->codec_tag= 0;
3097 if(st->codec->codec_tag){
3098 if (!validate_codec_tag(s, st)) {
3100 av_get_codec_tag_string(tagbuf, sizeof(tagbuf), st->codec->codec_tag);
3101 av_log(s, AV_LOG_ERROR,
3102 "Tag %s/0x%08x incompatible with output codec id '%d'\n",
3103 tagbuf, st->codec->codec_tag, st->codec->codec_id);
3104 ret = AVERROR_INVALIDDATA;
3108 st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
3111 if(s->oformat->flags & AVFMT_GLOBALHEADER &&
3112 !(st->codec->flags & CODEC_FLAG_GLOBAL_HEADER))
3113 av_log(s, AV_LOG_WARNING, "Codec for stream %d does not use global headers but container format requires global headers\n", i);
3116 if (!s->priv_data && s->oformat->priv_data_size > 0) {
3117 s->priv_data = av_mallocz(s->oformat->priv_data_size);
3118 if (!s->priv_data) {
3119 ret = AVERROR(ENOMEM);
3122 if (s->oformat->priv_class) {
3123 *(const AVClass**)s->priv_data= s->oformat->priv_class;
3124 av_opt_set_defaults(s->priv_data);
3125 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
3130 /* set muxer identification string */
3131 if (s->nb_streams && !(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
3132 av_dict_set(&s->metadata, "encoder", LIBAVFORMAT_IDENT, 0);
3135 if(s->oformat->write_header){
3136 ret = s->oformat->write_header(s);
3141 /* init PTS generation */
3142 for(i=0;i<s->nb_streams;i++) {
3143 int64_t den = AV_NOPTS_VALUE;
3146 switch (st->codec->codec_type) {
3147 case AVMEDIA_TYPE_AUDIO:
3148 den = (int64_t)st->time_base.num * st->codec->sample_rate;
3150 case AVMEDIA_TYPE_VIDEO:
3151 den = (int64_t)st->time_base.num * st->codec->time_base.den;
3156 if (den != AV_NOPTS_VALUE) {
3158 ret = AVERROR_INVALIDDATA;
3161 frac_init(&st->pts, 0, 0, den);
3166 av_dict_free(options);
3175 //FIXME merge with compute_pkt_fields
3176 static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt){
3177 int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
3178 int num, den, frame_size, i;
3180 av_dlog(s, "compute_pkt_fields2: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n",
3181 pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
3183 /* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
3184 return AVERROR(EINVAL);*/
3186 /* duration field */
3187 if (pkt->duration == 0) {
3188 compute_frame_duration(&num, &den, st, NULL, pkt);
3190 pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
3194 if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
3197 //XXX/FIXME this is a temporary hack until all encoders output pts
3198 if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
3200 // pkt->pts= st->cur_dts;
3201 pkt->pts= st->pts.val;
3204 //calculate dts from pts
3205 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
3206 st->pts_buffer[0]= pkt->pts;
3207 for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
3208 st->pts_buffer[i]= pkt->pts + (i-delay-1) * pkt->duration;
3209 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
3210 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
3212 pkt->dts= st->pts_buffer[0];
3215 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)){
3216 av_log(s, AV_LOG_ERROR,
3217 "Application provided invalid, non monotonically increasing dts to muxer in stream %d: %"PRId64" >= %"PRId64"\n",
3218 st->index, st->cur_dts, pkt->dts);
3219 return AVERROR(EINVAL);
3221 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
3222 av_log(s, AV_LOG_ERROR, "pts < dts in stream %d\n", st->index);
3223 return AVERROR(EINVAL);
3226 // av_log(s, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
3227 st->cur_dts= pkt->dts;
3228 st->pts.val= pkt->dts;
3231 switch (st->codec->codec_type) {
3232 case AVMEDIA_TYPE_AUDIO:
3233 frame_size = get_audio_frame_size(st->codec, pkt->size);
3235 /* HACK/FIXME, we skip the initial 0 size packets as they are most
3236 likely equal to the encoder delay, but it would be better if we
3237 had the real timestamps from the encoder */
3238 if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
3239 frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
3242 case AVMEDIA_TYPE_VIDEO:
3243 frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
3251 int av_write_frame(AVFormatContext *s, AVPacket *pkt)
3253 int ret = compute_pkt_fields2(s, s->streams[pkt->stream_index], pkt);
3255 if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3258 ret= s->oformat->write_packet(s, pkt);
3261 s->streams[pkt->stream_index]->nb_frames++;
3265 void ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
3266 int (*compare)(AVFormatContext *, AVPacket *, AVPacket *))
3268 AVPacketList **next_point, *this_pktl;
3270 this_pktl = av_mallocz(sizeof(AVPacketList));
3271 this_pktl->pkt= *pkt;
3272 pkt->destruct= NULL; // do not free original but only the copy
3273 av_dup_packet(&this_pktl->pkt); // duplicate the packet if it uses non-alloced memory
3275 if(s->streams[pkt->stream_index]->last_in_packet_buffer){
3276 next_point = &(s->streams[pkt->stream_index]->last_in_packet_buffer->next);
3278 next_point = &s->packet_buffer;
3281 if(compare(s, &s->packet_buffer_end->pkt, pkt)){
3282 while(!compare(s, &(*next_point)->pkt, pkt)){
3283 next_point= &(*next_point)->next;
3287 next_point = &(s->packet_buffer_end->next);
3290 assert(!*next_point);
3292 s->packet_buffer_end= this_pktl;
3295 this_pktl->next= *next_point;
3297 s->streams[pkt->stream_index]->last_in_packet_buffer=
3298 *next_point= this_pktl;
3301 static int ff_interleave_compare_dts(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3303 AVStream *st = s->streams[ pkt ->stream_index];
3304 AVStream *st2= s->streams[ next->stream_index];
3305 int comp = av_compare_ts(next->dts, st2->time_base, pkt->dts,
3309 return pkt->stream_index < next->stream_index;
3313 int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
3315 int stream_count=0, noninterleaved_count=0;
3316 int64_t delta_dts_max = 0;
3320 ff_interleave_add_packet(s, pkt, ff_interleave_compare_dts);
3323 for(i=0; i < s->nb_streams; i++) {
3324 if (s->streams[i]->last_in_packet_buffer) {
3326 } else if(s->streams[i]->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3327 ++noninterleaved_count;
3331 if (s->nb_streams == stream_count) {
3334 for(i=0; i < s->nb_streams; i++) {
3335 if (s->streams[i]->last_in_packet_buffer) {
3337 av_rescale_q(s->streams[i]->last_in_packet_buffer->pkt.dts,
3338 s->streams[i]->time_base,
3340 av_rescale_q(s->packet_buffer->pkt.dts,
3341 s->streams[s->packet_buffer->pkt.stream_index]->time_base,
3343 delta_dts_max= FFMAX(delta_dts_max, delta_dts);
3346 if(s->nb_streams == stream_count+noninterleaved_count &&
3347 delta_dts_max > 20*AV_TIME_BASE) {
3348 av_log(s, AV_LOG_DEBUG, "flushing with %d noninterleaved\n", noninterleaved_count);
3352 if(stream_count && flush){
3353 pktl= s->packet_buffer;
3356 s->packet_buffer= pktl->next;
3357 if(!s->packet_buffer)
3358 s->packet_buffer_end= NULL;
3360 if(s->streams[out->stream_index]->last_in_packet_buffer == pktl)
3361 s->streams[out->stream_index]->last_in_packet_buffer= NULL;
3365 av_init_packet(out);
3371 * Interleave an AVPacket correctly so it can be muxed.
3372 * @param out the interleaved packet will be output here
3373 * @param in the input packet
3374 * @param flush 1 if no further packets are available as input and all
3375 * remaining packets should be output
3376 * @return 1 if a packet was output, 0 if no packet could be output,
3377 * < 0 if an error occurred
3379 static int interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
3380 if(s->oformat->interleave_packet)
3381 return s->oformat->interleave_packet(s, out, in, flush);
3383 return av_interleave_packet_per_dts(s, out, in, flush);
3386 int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
3387 AVStream *st= s->streams[ pkt->stream_index];
3390 //FIXME/XXX/HACK drop zero sized packets
3391 if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->size==0)
3394 av_dlog(s, "av_interleaved_write_frame size:%d dts:%"PRId64" pts:%"PRId64"\n",
3395 pkt->size, pkt->dts, pkt->pts);
3396 if((ret = compute_pkt_fields2(s, st, pkt)) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3399 if(pkt->dts == AV_NOPTS_VALUE && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
3400 return AVERROR(EINVAL);
3404 int ret= interleave_packet(s, &opkt, pkt, 0);
3405 if(ret<=0) //FIXME cleanup needed for ret<0 ?
3408 ret= s->oformat->write_packet(s, &opkt);
3410 s->streams[opkt.stream_index]->nb_frames++;
3412 av_free_packet(&opkt);
3417 if(s->pb && s->pb->error)
3418 return s->pb->error;
3422 int av_write_trailer(AVFormatContext *s)
3428 ret= interleave_packet(s, &pkt, NULL, 1);
3429 if(ret<0) //FIXME cleanup needed for ret<0 ?
3434 ret= s->oformat->write_packet(s, &pkt);
3436 s->streams[pkt.stream_index]->nb_frames++;
3438 av_free_packet(&pkt);
3442 if(s->pb && s->pb->error)
3446 if(s->oformat->write_trailer)
3447 ret = s->oformat->write_trailer(s);
3450 ret = s->pb ? s->pb->error : 0;
3451 for(i=0;i<s->nb_streams;i++) {
3452 av_freep(&s->streams[i]->priv_data);
3453 av_freep(&s->streams[i]->index_entries);
3455 if (s->iformat && s->iformat->priv_class)
3456 av_opt_free(s->priv_data);
3457 av_freep(&s->priv_data);
3461 int av_get_output_timestamp(struct AVFormatContext *s, int stream,
3462 int64_t *dts, int64_t *wall)
3464 if (!s->oformat || !s->oformat->get_output_timestamp)
3465 return AVERROR(ENOSYS);
3466 s->oformat->get_output_timestamp(s, stream, dts, wall);
3470 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3473 AVProgram *program=NULL;
3476 if (idx >= ac->nb_streams) {
3477 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3481 for(i=0; i<ac->nb_programs; i++){
3482 if(ac->programs[i]->id != progid)
3484 program = ac->programs[i];
3485 for(j=0; j<program->nb_stream_indexes; j++)
3486 if(program->stream_index[j] == idx)
3489 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3492 program->stream_index = tmp;
3493 program->stream_index[program->nb_stream_indexes++] = idx;
3498 static void print_fps(double d, const char *postfix){
3499 uint64_t v= lrintf(d*100);
3500 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3501 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3502 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3505 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3507 if(m && !(m->count == 1 && av_dict_get(m, "language", NULL, 0))){
3508 AVDictionaryEntry *tag=NULL;
3510 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3511 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3512 if(strcmp("language", tag->key)){
3515 av_strlcpy(tmp, tag->value, sizeof(tmp));
3516 for(i=0; i<strlen(tmp); i++) if(tmp[i]==0xd) tmp[i]=' ';
3517 av_log(ctx, AV_LOG_INFO, "%s %-16s: %s\n", indent, tag->key, tmp);
3523 /* "user interface" functions */
3524 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3527 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3528 AVStream *st = ic->streams[i];
3529 int g = av_gcd(st->time_base.num, st->time_base.den);
3530 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3531 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3532 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3533 /* the pid is an important information, so we display it */
3534 /* XXX: add a generic system */
3535 if (flags & AVFMT_SHOW_IDS)
3536 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3538 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3539 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3540 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3541 if (st->sample_aspect_ratio.num && // default
3542 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3543 AVRational display_aspect_ratio;
3544 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3545 st->codec->width*st->sample_aspect_ratio.num,
3546 st->codec->height*st->sample_aspect_ratio.den,
3548 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3549 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3550 display_aspect_ratio.num, display_aspect_ratio.den);
3552 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3553 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3554 print_fps(av_q2d(st->avg_frame_rate), "fps");
3555 if(st->r_frame_rate.den && st->r_frame_rate.num)
3556 print_fps(av_q2d(st->r_frame_rate), "tbr");
3557 if(st->time_base.den && st->time_base.num)
3558 print_fps(1/av_q2d(st->time_base), "tbn");
3559 if(st->codec->time_base.den && st->codec->time_base.num)
3560 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3562 if (st->disposition & AV_DISPOSITION_DEFAULT)
3563 av_log(NULL, AV_LOG_INFO, " (default)");
3564 if (st->disposition & AV_DISPOSITION_DUB)
3565 av_log(NULL, AV_LOG_INFO, " (dub)");
3566 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3567 av_log(NULL, AV_LOG_INFO, " (original)");
3568 if (st->disposition & AV_DISPOSITION_COMMENT)
3569 av_log(NULL, AV_LOG_INFO, " (comment)");
3570 if (st->disposition & AV_DISPOSITION_LYRICS)
3571 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3572 if (st->disposition & AV_DISPOSITION_KARAOKE)
3573 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3574 if (st->disposition & AV_DISPOSITION_FORCED)
3575 av_log(NULL, AV_LOG_INFO, " (forced)");
3576 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3577 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3578 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3579 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3580 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3581 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3582 av_log(NULL, AV_LOG_INFO, "\n");
3583 dump_metadata(NULL, st->metadata, " ");
3586 #if FF_API_DUMP_FORMAT
3587 void dump_format(AVFormatContext *ic,
3592 av_dump_format(ic, index, url, is_output);
3596 void av_dump_format(AVFormatContext *ic,
3602 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3603 if (ic->nb_streams && !printed)
3606 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3607 is_output ? "Output" : "Input",
3609 is_output ? ic->oformat->name : ic->iformat->name,
3610 is_output ? "to" : "from", url);
3611 dump_metadata(NULL, ic->metadata, " ");
3613 av_log(NULL, AV_LOG_INFO, " Duration: ");
3614 if (ic->duration != AV_NOPTS_VALUE) {
3615 int hours, mins, secs, us;
3616 secs = ic->duration / AV_TIME_BASE;
3617 us = ic->duration % AV_TIME_BASE;
3622 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3623 (100 * us) / AV_TIME_BASE);
3625 av_log(NULL, AV_LOG_INFO, "N/A");
3627 if (ic->start_time != AV_NOPTS_VALUE) {
3629 av_log(NULL, AV_LOG_INFO, ", start: ");
3630 secs = ic->start_time / AV_TIME_BASE;
3631 us = abs(ic->start_time % AV_TIME_BASE);
3632 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3633 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3635 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3637 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3639 av_log(NULL, AV_LOG_INFO, "N/A");
3641 av_log(NULL, AV_LOG_INFO, "\n");
3643 for (i = 0; i < ic->nb_chapters; i++) {
3644 AVChapter *ch = ic->chapters[i];
3645 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3646 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3647 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3649 dump_metadata(NULL, ch->metadata, " ");
3651 if(ic->nb_programs) {
3652 int j, k, total = 0;
3653 for(j=0; j<ic->nb_programs; j++) {
3654 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3656 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3657 name ? name->value : "");
3658 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3659 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3660 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3661 printed[ic->programs[j]->stream_index[k]] = 1;
3663 total += ic->programs[j]->nb_stream_indexes;
3665 if (total < ic->nb_streams)
3666 av_log(NULL, AV_LOG_INFO, " No Program\n");
3668 for(i=0;i<ic->nb_streams;i++)
3670 dump_stream_format(ic, i, index, is_output);
3675 int64_t av_gettime(void)
3678 gettimeofday(&tv,NULL);
3679 return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
3682 uint64_t ff_ntp_time(void)
3684 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3687 #if FF_API_PARSE_DATE
3688 #include "libavutil/parseutils.h"
3690 int64_t parse_date(const char *timestr, int duration)
3693 av_parse_time(&timeval, timestr, duration);
3698 #if FF_API_FIND_INFO_TAG
3699 #include "libavutil/parseutils.h"
3701 int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
3703 return av_find_info_tag(arg, arg_size, tag1, info);
3707 int av_get_frame_filename(char *buf, int buf_size,
3708 const char *path, int number)
3711 char *q, buf1[20], c;
3712 int nd, len, percentd_found;
3724 while (isdigit(*p)) {
3725 nd = nd * 10 + *p++ - '0';
3728 } while (isdigit(c));
3737 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3739 if ((q - buf + len) > buf_size - 1)
3741 memcpy(q, buf1, len);
3749 if ((q - buf) < buf_size - 1)
3753 if (!percentd_found)
3762 static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
3766 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3768 for(i=0;i<size;i+=16) {
3775 PRINT(" %02x", buf[i+j]);
3780 for(j=0;j<len;j++) {
3782 if (c < ' ' || c > '~')
3791 void av_hex_dump(FILE *f, uint8_t *buf, int size)
3793 hex_dump_internal(NULL, f, 0, buf, size);
3796 void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
3798 hex_dump_internal(avcl, NULL, level, buf, size);
3801 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3804 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3805 PRINT("stream #%d:\n", pkt->stream_index);
3806 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3807 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3808 /* DTS is _always_ valid after av_read_frame() */
3810 if (pkt->dts == AV_NOPTS_VALUE)
3813 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3814 /* PTS may not be known if B-frames are present. */
3816 if (pkt->pts == AV_NOPTS_VALUE)
3819 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3821 PRINT(" size=%d\n", pkt->size);
3824 av_hex_dump(f, pkt->data, pkt->size);
3828 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3830 AVRational tb = { 1, AV_TIME_BASE };
3831 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3835 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3837 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3841 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3843 AVRational tb = { 1, AV_TIME_BASE };
3844 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3848 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3851 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3854 void av_url_split(char *proto, int proto_size,
3855 char *authorization, int authorization_size,
3856 char *hostname, int hostname_size,
3858 char *path, int path_size,
3861 const char *p, *ls, *at, *col, *brk;
3863 if (port_ptr) *port_ptr = -1;
3864 if (proto_size > 0) proto[0] = 0;
3865 if (authorization_size > 0) authorization[0] = 0;
3866 if (hostname_size > 0) hostname[0] = 0;
3867 if (path_size > 0) path[0] = 0;
3869 /* parse protocol */
3870 if ((p = strchr(url, ':'))) {
3871 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3876 /* no protocol means plain filename */
3877 av_strlcpy(path, url, path_size);
3881 /* separate path from hostname */
3882 ls = strchr(p, '/');
3884 ls = strchr(p, '?');
3886 av_strlcpy(path, ls, path_size);
3888 ls = &p[strlen(p)]; // XXX
3890 /* the rest is hostname, use that to parse auth/port */
3892 /* authorization (user[:pass]@hostname) */
3893 if ((at = strchr(p, '@')) && at < ls) {
3894 av_strlcpy(authorization, p,
3895 FFMIN(authorization_size, at + 1 - p));
3896 p = at + 1; /* skip '@' */
3899 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3901 av_strlcpy(hostname, p + 1,
3902 FFMIN(hostname_size, brk - p));
3903 if (brk[1] == ':' && port_ptr)
3904 *port_ptr = atoi(brk + 2);
3905 } else if ((col = strchr(p, ':')) && col < ls) {
3906 av_strlcpy(hostname, p,
3907 FFMIN(col + 1 - p, hostname_size));
3908 if (port_ptr) *port_ptr = atoi(col + 1);
3910 av_strlcpy(hostname, p,
3911 FFMIN(ls + 1 - p, hostname_size));
3915 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3918 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3921 'C', 'D', 'E', 'F' };
3922 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3925 'c', 'd', 'e', 'f' };
3926 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3928 for(i = 0; i < s; i++) {
3929 buff[i * 2] = hex_table[src[i] >> 4];
3930 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3936 int ff_hex_to_data(uint8_t *data, const char *p)
3943 p += strspn(p, SPACE_CHARS);
3946 c = toupper((unsigned char) *p++);
3947 if (c >= '0' && c <= '9')
3949 else if (c >= 'A' && c <= 'F')
3964 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3965 unsigned int pts_num, unsigned int pts_den)
3968 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3969 if(new_tb.num != pts_num)
3970 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3972 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3974 if(new_tb.num <= 0 || new_tb.den <= 0) {
3975 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase for st:%d\n", s->index);
3978 s->time_base = new_tb;
3979 s->pts_wrap_bits = pts_wrap_bits;
3982 int ff_url_join(char *str, int size, const char *proto,
3983 const char *authorization, const char *hostname,
3984 int port, const char *fmt, ...)
3987 struct addrinfo hints, *ai;
3992 av_strlcatf(str, size, "%s://", proto);
3993 if (authorization && authorization[0])
3994 av_strlcatf(str, size, "%s@", authorization);
3995 #if CONFIG_NETWORK && defined(AF_INET6)
3996 /* Determine if hostname is a numerical IPv6 address,
3997 * properly escape it within [] in that case. */
3998 memset(&hints, 0, sizeof(hints));
3999 hints.ai_flags = AI_NUMERICHOST;
4000 if (!getaddrinfo(hostname, NULL, &hints, &ai)) {
4001 if (ai->ai_family == AF_INET6) {
4002 av_strlcat(str, "[", size);
4003 av_strlcat(str, hostname, size);
4004 av_strlcat(str, "]", size);
4006 av_strlcat(str, hostname, size);
4011 /* Not an IPv6 address, just output the plain string. */
4012 av_strlcat(str, hostname, size);
4015 av_strlcatf(str, size, ":%d", port);
4018 int len = strlen(str);
4021 vsnprintf(str + len, size > len ? size - len : 0, fmt, vl);
4027 int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
4028 AVFormatContext *src)
4033 local_pkt.stream_index = dst_stream;
4034 if (pkt->pts != AV_NOPTS_VALUE)
4035 local_pkt.pts = av_rescale_q(pkt->pts,
4036 src->streams[pkt->stream_index]->time_base,
4037 dst->streams[dst_stream]->time_base);
4038 if (pkt->dts != AV_NOPTS_VALUE)
4039 local_pkt.dts = av_rescale_q(pkt->dts,
4040 src->streams[pkt->stream_index]->time_base,
4041 dst->streams[dst_stream]->time_base);
4042 return av_write_frame(dst, &local_pkt);
4045 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4048 const char *ptr = str;
4050 /* Parse key=value pairs. */
4053 char *dest = NULL, *dest_end;
4054 int key_len, dest_len = 0;
4056 /* Skip whitespace and potential commas. */
4057 while (*ptr && (isspace(*ptr) || *ptr == ','))
4064 if (!(ptr = strchr(key, '=')))
4067 key_len = ptr - key;
4069 callback_get_buf(context, key, key_len, &dest, &dest_len);
4070 dest_end = dest + dest_len - 1;
4074 while (*ptr && *ptr != '\"') {
4078 if (dest && dest < dest_end)
4082 if (dest && dest < dest_end)
4090 for (; *ptr && !(isspace(*ptr) || *ptr == ','); ptr++)
4091 if (dest && dest < dest_end)
4099 int ff_find_stream_index(AVFormatContext *s, int id)
4102 for (i = 0; i < s->nb_streams; i++) {
4103 if (s->streams[i]->id == id)
4109 void ff_make_absolute_url(char *buf, int size, const char *base,
4113 /* Absolute path, relative to the current server */
4114 if (base && strstr(base, "://") && rel[0] == '/') {
4116 av_strlcpy(buf, base, size);
4117 sep = strstr(buf, "://");
4120 sep = strchr(sep, '/');
4124 av_strlcat(buf, rel, size);
4127 /* If rel actually is an absolute url, just copy it */
4128 if (!base || strstr(rel, "://") || rel[0] == '/') {
4129 av_strlcpy(buf, rel, size);
4133 av_strlcpy(buf, base, size);
4134 /* Remove the file name from the base url */
4135 sep = strrchr(buf, '/');
4140 while (av_strstart(rel, "../", NULL) && sep) {
4141 /* Remove the path delimiter at the end */
4143 sep = strrchr(buf, '/');
4144 /* If the next directory name to pop off is "..", break here */
4145 if (!strcmp(sep ? &sep[1] : buf, "..")) {
4146 /* Readd the slash we just removed */
4147 av_strlcat(buf, "/", size);
4150 /* Cut off the directory name */
4157 av_strlcat(buf, rel, size);
4160 int64_t ff_iso8601_to_unix_time(const char *datestr)
4163 struct tm time = {0};
4164 strptime(datestr, "%Y - %m - %dT%T", &time);
4165 return mktime(&time);
4167 av_log(NULL, AV_LOG_WARNING, "strptime() unavailable on this system, cannot convert "
4168 "the date string.\n");
4173 int avformat_query_codec(AVOutputFormat *ofmt, enum CodecID codec_id, int std_compliance)
4176 if (ofmt->query_codec)
4177 return ofmt->query_codec(codec_id, std_compliance);
4178 else if (ofmt->codec_tag)
4179 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4180 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4181 codec_id == ofmt->subtitle_codec)
4184 return AVERROR_PATCHWELCOME;