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
23 #include "avio_internal.h"
25 #include "libavcodec/internal.h"
26 #include "libavcodec/raw.h"
27 #include "libavcodec/bytestream.h"
28 #include "libavutil/avassert.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/dict.h"
31 #include "libavutil/pixdesc.h"
34 #include "libavutil/avassert.h"
35 #include "libavutil/avstring.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/time.h"
39 #include "libavutil/timestamp.h"
41 #include "audiointerleave.h"
53 * various utility functions for use within FFmpeg
56 unsigned avformat_version(void)
58 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
59 return LIBAVFORMAT_VERSION_INT;
62 const char *avformat_configuration(void)
64 return FFMPEG_CONFIGURATION;
67 const char *avformat_license(void)
69 #define LICENSE_PREFIX "libavformat license: "
70 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
73 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
75 static int is_relative(int64_t ts) {
76 return ts > (RELATIVE_TS_BASE - (1LL<<48));
80 * Wrap a given time stamp, if there is an indication for an overflow
83 * @param timestamp the time stamp to wrap
84 * @return resulting time stamp
86 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
88 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
89 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
90 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
91 timestamp < st->pts_wrap_reference)
92 return timestamp + (1ULL<<st->pts_wrap_bits);
93 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
94 timestamp >= st->pts_wrap_reference)
95 return timestamp - (1ULL<<st->pts_wrap_bits);
100 #define MAKE_ACCESSORS(str, name, type, field) \
101 type av_##name##_get_##field(const str *s) { return s->field; } \
102 void av_##name##_set_##field(str *s, type v) { s->field = v; }
104 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
106 /* an arbitrarily chosen "sane" max packet size -- 50M */
107 #define SANE_CHUNK_SIZE (50000000)
109 int ffio_limit(AVIOContext *s, int size)
112 int64_t remaining= s->maxsize - avio_tell(s);
113 if(remaining < size){
114 int64_t newsize= avio_size(s);
115 if(!s->maxsize || s->maxsize<newsize)
116 s->maxsize= newsize - !newsize;
117 remaining= s->maxsize - avio_tell(s);
118 remaining= FFMAX(remaining, 0);
121 if(s->maxsize>=0 && remaining+1 < size){
122 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
130 * Read the data in sane-sized chunks and append to pkt.
131 * Return the number of bytes read or an error.
133 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
135 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
136 int orig_size = pkt->size;
140 int prev_size = pkt->size;
144 * When the caller requests a lot of data, limit it to the amount left
145 * in file or SANE_CHUNK_SIZE when it is not known
148 if (read_size > SANE_CHUNK_SIZE/10) {
149 read_size = ffio_limit(s, read_size);
150 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
152 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
155 ret = av_grow_packet(pkt, read_size);
159 ret = avio_read(s, pkt->data + prev_size, read_size);
160 if (ret != read_size) {
161 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
168 pkt->flags |= AV_PKT_FLAG_CORRUPT;
173 return pkt->size > orig_size ? pkt->size - orig_size : ret;
176 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
181 pkt->pos = avio_tell(s);
183 return append_packet_chunked(s, pkt, size);
186 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
189 return av_get_packet(s, pkt, size);
190 return append_packet_chunked(s, pkt, size);
194 int av_filename_number_test(const char *filename)
197 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
200 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
202 AVProbeData lpd = *pd;
203 AVInputFormat *fmt1 = NULL, *fmt;
204 int score, nodat = 0, score_max=0;
205 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
208 lpd.buf = zerobuffer;
210 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
211 int id3len = ff_id3v2_tag_len(lpd.buf);
212 if (lpd.buf_size > id3len + 16) {
214 lpd.buf_size -= id3len;
220 while ((fmt1 = av_iformat_next(fmt1))) {
221 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
224 if (fmt1->read_probe) {
225 score = fmt1->read_probe(&lpd);
226 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
227 score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
228 } else if (fmt1->extensions) {
229 if (av_match_ext(lpd.filename, fmt1->extensions)) {
230 score = AVPROBE_SCORE_EXTENSION;
233 if (score > score_max) {
236 }else if (score == score_max)
240 score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
241 *score_ret= score_max;
246 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
249 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
250 if(score_ret > *score_max){
251 *score_max= score_ret;
257 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
259 return av_probe_input_format2(pd, is_opened, &score);
262 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
264 static const struct {
265 const char *name; enum AVCodecID id; enum AVMediaType type;
267 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
268 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
269 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
270 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
271 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
272 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
273 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
274 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
275 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
279 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
281 if (fmt && st->request_probe <= score) {
283 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
284 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
285 for (i = 0; fmt_id_type[i].name; i++) {
286 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
287 st->codec->codec_id = fmt_id_type[i].id;
288 st->codec->codec_type = fmt_id_type[i].type;
296 /************************************************************/
297 /* input media file */
299 int av_demuxer_open(AVFormatContext *ic){
302 if (ic->iformat->read_header) {
303 err = ic->iformat->read_header(ic);
308 if (ic->pb && !ic->data_offset)
309 ic->data_offset = avio_tell(ic->pb);
315 /** size of probe buffer, for guessing file type from file contents */
316 #define PROBE_BUF_MIN 2048
317 #define PROBE_BUF_MAX (1<<20)
319 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
320 const char *filename, void *logctx,
321 unsigned int offset, unsigned int max_probe_size)
323 AVProbeData pd = { filename ? filename : "", NULL, -offset };
324 unsigned char *buf = NULL;
326 int ret = 0, probe_size, buf_offset = 0;
328 if (!max_probe_size) {
329 max_probe_size = PROBE_BUF_MAX;
330 } else if (max_probe_size > PROBE_BUF_MAX) {
331 max_probe_size = PROBE_BUF_MAX;
332 } else if (max_probe_size < PROBE_BUF_MIN) {
333 av_log(logctx, AV_LOG_ERROR,
334 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
335 return AVERROR(EINVAL);
338 if (offset >= max_probe_size) {
339 return AVERROR(EINVAL);
342 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
343 if (!av_strcasecmp(mime_type, "audio/aacp")) {
344 *fmt = av_find_input_format("aac");
346 av_freep(&mime_type);
349 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
350 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
351 int score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
354 if (probe_size < offset) {
358 /* read probe data */
359 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
362 return AVERROR(ENOMEM);
365 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
366 /* fail if error was not end of file, otherwise, lower score */
367 if (ret != AVERROR_EOF) {
372 ret = 0; /* error was end of file, nothing read */
374 pd.buf_size = buf_offset += ret;
375 pd.buf = &buf[offset];
377 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
379 /* guess file format */
380 *fmt = av_probe_input_format2(&pd, 1, &score);
382 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
383 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
385 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
391 return AVERROR_INVALIDDATA;
394 /* rewind. reuse probe buffer to avoid seeking */
395 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
400 /* open input file and probe the format if necessary */
401 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
404 AVProbeData pd = {filename, NULL, 0};
405 int score = AVPROBE_SCORE_RETRY;
408 s->flags |= AVFMT_FLAG_CUSTOM_IO;
410 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
411 else if (s->iformat->flags & AVFMT_NOFILE)
412 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
413 "will be ignored with AVFMT_NOFILE format.\n");
417 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
418 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
421 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
422 &s->interrupt_callback, options)) < 0)
426 return av_probe_input_buffer(s->pb, &s->iformat, filename, s, 0, s->probesize);
429 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
430 AVPacketList **plast_pktl){
431 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
436 (*plast_pktl)->next = pktl;
438 *packet_buffer = pktl;
440 /* add the packet in the buffered packet list */
446 int avformat_queue_attached_pictures(AVFormatContext *s)
449 for (i = 0; i < s->nb_streams; i++)
450 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
451 s->streams[i]->discard < AVDISCARD_ALL) {
452 AVPacket copy = s->streams[i]->attached_pic;
453 copy.buf = av_buffer_ref(copy.buf);
455 return AVERROR(ENOMEM);
457 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
462 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
464 AVFormatContext *s = *ps;
466 AVDictionary *tmp = NULL;
467 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
469 if (!s && !(s = avformat_alloc_context()))
470 return AVERROR(ENOMEM);
472 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
473 return AVERROR(EINVAL);
479 av_dict_copy(&tmp, *options, 0);
481 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
484 if ((ret = init_input(s, filename, &tmp)) < 0)
486 avio_skip(s->pb, s->skip_initial_bytes);
488 /* check filename in case an image number is expected */
489 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
490 if (!av_filename_number_test(filename)) {
491 ret = AVERROR(EINVAL);
496 s->duration = s->start_time = AV_NOPTS_VALUE;
497 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
499 /* allocate private data */
500 if (s->iformat->priv_data_size > 0) {
501 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
502 ret = AVERROR(ENOMEM);
505 if (s->iformat->priv_class) {
506 *(const AVClass**)s->priv_data = s->iformat->priv_class;
507 av_opt_set_defaults(s->priv_data);
508 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
513 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
515 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
517 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
518 if ((ret = s->iformat->read_header(s)) < 0)
521 if (id3v2_extra_meta) {
522 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
523 !strcmp(s->iformat->name, "tta")) {
524 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
527 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
529 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
531 if ((ret = avformat_queue_attached_pictures(s)) < 0)
534 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
535 s->data_offset = avio_tell(s->pb);
537 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
540 av_dict_free(options);
547 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
549 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
551 avformat_free_context(s);
556 /*******************************************************/
558 static void force_codec_ids(AVFormatContext *s, AVStream *st)
560 switch(st->codec->codec_type){
561 case AVMEDIA_TYPE_VIDEO:
562 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
564 case AVMEDIA_TYPE_AUDIO:
565 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
567 case AVMEDIA_TYPE_SUBTITLE:
568 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
573 static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
575 if(st->request_probe>0){
576 AVProbeData *pd = &st->probe_data;
578 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
582 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
586 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
587 pd->buf_size += pkt->size;
588 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
591 st->probe_packets = 0;
593 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
598 end= s->raw_packet_buffer_remaining_size <= 0
599 || st->probe_packets<=0;
601 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
602 int score= set_codec_from_probe_data(s, st, pd);
603 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
607 st->request_probe= -1;
608 if(st->codec->codec_id != AV_CODEC_ID_NONE){
609 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
611 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
613 force_codec_ids(s, st);
618 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
624 AVPacketList *pktl = s->raw_packet_buffer;
628 st = s->streams[pkt->stream_index];
629 if (s->raw_packet_buffer_remaining_size <= 0)
630 probe_codec(s, st, NULL);
631 if(st->request_probe <= 0){
632 s->raw_packet_buffer = pktl->next;
633 s->raw_packet_buffer_remaining_size += pkt->size;
642 ret= s->iformat->read_packet(s, pkt);
644 if (!pktl || ret == AVERROR(EAGAIN))
646 for (i = 0; i < s->nb_streams; i++) {
648 if (st->probe_packets) {
649 probe_codec(s, st, NULL);
651 av_assert0(st->request_probe <= 0);
656 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
657 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
658 av_log(s, AV_LOG_WARNING,
659 "Dropped corrupted packet (stream = %d)\n",
665 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
666 av_packet_merge_side_data(pkt);
668 if(pkt->stream_index >= (unsigned)s->nb_streams){
669 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
673 st= s->streams[pkt->stream_index];
674 pkt->dts = wrap_timestamp(st, pkt->dts);
675 pkt->pts = wrap_timestamp(st, pkt->pts);
677 force_codec_ids(s, st);
679 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
680 if (s->use_wallclock_as_timestamps)
681 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
683 if(!pktl && st->request_probe <= 0)
686 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
687 s->raw_packet_buffer_remaining_size -= pkt->size;
689 probe_codec(s, st, pkt);
693 #if FF_API_READ_PACKET
694 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
696 return ff_read_packet(s, pkt);
701 /**********************************************************/
703 static int determinable_frame_size(AVCodecContext *avctx)
705 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
706 avctx->codec_id == AV_CODEC_ID_MP1 ||
707 avctx->codec_id == AV_CODEC_ID_MP2 ||
708 avctx->codec_id == AV_CODEC_ID_MP3/* ||
709 avctx->codec_id == AV_CODEC_ID_CELT*/)
715 * Get the number of samples of an audio frame. Return -1 on error.
717 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
721 /* give frame_size priority if demuxing */
722 if (!mux && enc->frame_size > 1)
723 return enc->frame_size;
725 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
728 /* Fall back on using frame_size if muxing. */
729 if (enc->frame_size > 1)
730 return enc->frame_size;
732 //For WMA we currently have no other means to calculate duration thus we
733 //do it here by assuming CBR, which is true for all known cases.
734 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
735 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
736 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
744 * Return the frame duration in seconds. Return 0 if not available.
746 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
747 AVCodecParserContext *pc, AVPacket *pkt)
753 switch(st->codec->codec_type) {
754 case AVMEDIA_TYPE_VIDEO:
755 if (st->r_frame_rate.num && !pc) {
756 *pnum = st->r_frame_rate.den;
757 *pden = st->r_frame_rate.num;
758 } else if(st->time_base.num*1000LL > st->time_base.den) {
759 *pnum = st->time_base.num;
760 *pden = st->time_base.den;
761 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
762 *pnum = st->codec->time_base.num;
763 *pden = st->codec->time_base.den;
764 if (pc && pc->repeat_pict) {
765 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
766 *pden /= 1 + pc->repeat_pict;
768 *pnum *= 1 + pc->repeat_pict;
770 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
771 //Thus if we have no parser in such case leave duration undefined.
772 if(st->codec->ticks_per_frame>1 && !pc){
777 case AVMEDIA_TYPE_AUDIO:
778 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
779 if (frame_size <= 0 || st->codec->sample_rate <= 0)
782 *pden = st->codec->sample_rate;
789 static int is_intra_only(AVCodecContext *enc){
790 const AVCodecDescriptor *desc;
792 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
795 desc = av_codec_get_codec_descriptor(enc);
797 desc = avcodec_descriptor_get(enc->codec_id);
798 av_codec_set_codec_descriptor(enc, desc);
801 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
805 static int has_decode_delay_been_guessed(AVStream *st)
807 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
808 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
810 #if CONFIG_H264_DECODER
811 if(st->codec->has_b_frames &&
812 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
815 if(st->codec->has_b_frames<3)
816 return st->nb_decoded_frames >= 7;
817 else if(st->codec->has_b_frames<4)
818 return st->nb_decoded_frames >= 18;
820 return st->nb_decoded_frames >= 20;
823 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
827 if (pktl == s->parse_queue_end)
828 return s->packet_buffer;
832 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
834 if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
835 st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
838 // reference time stamp should be 60 s before first time stamp
839 int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
840 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
841 int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
842 (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
843 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
845 AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
847 if (!first_program) {
848 int default_stream_index = av_find_default_stream_index(s);
849 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
850 for (i=0; i<s->nb_streams; i++) {
851 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
852 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
856 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
857 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
861 AVProgram *program = first_program;
863 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
864 pts_wrap_reference = program->pts_wrap_reference;
865 pts_wrap_behavior = program->pts_wrap_behavior;
868 program = av_find_program_from_stream(s, program, stream_index);
871 // update every program with differing pts_wrap_reference
872 program = first_program;
874 if (program->pts_wrap_reference != pts_wrap_reference) {
875 for (i=0; i<program->nb_stream_indexes; i++) {
876 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
877 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
880 program->pts_wrap_reference = pts_wrap_reference;
881 program->pts_wrap_behavior = pts_wrap_behavior;
883 program = av_find_program_from_stream(s, program, stream_index);
891 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
892 int64_t dts, int64_t pts, AVPacket *pkt)
894 AVStream *st= s->streams[stream_index];
895 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
896 int64_t pts_buffer[MAX_REORDER_DELAY+1];
900 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
903 delay = st->codec->has_b_frames;
904 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
906 shift = st->first_dts - RELATIVE_TS_BASE;
908 for (i=0; i<MAX_REORDER_DELAY+1; i++)
909 pts_buffer[i] = AV_NOPTS_VALUE;
911 if (is_relative(pts))
914 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
915 if(pktl->pkt.stream_index != stream_index)
917 if(is_relative(pktl->pkt.pts))
918 pktl->pkt.pts += shift;
920 if(is_relative(pktl->pkt.dts))
921 pktl->pkt.dts += shift;
923 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
924 st->start_time= pktl->pkt.pts;
926 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
927 pts_buffer[0]= pktl->pkt.pts;
928 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
929 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
930 if(pktl->pkt.dts == AV_NOPTS_VALUE)
931 pktl->pkt.dts= pts_buffer[0];
935 if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
936 // correct first time stamps to negative values
937 st->first_dts = wrap_timestamp(st, st->first_dts);
938 st->cur_dts = wrap_timestamp(st, st->cur_dts);
939 pkt->dts = wrap_timestamp(st, pkt->dts);
940 pkt->pts = wrap_timestamp(st, pkt->pts);
941 pts = wrap_timestamp(st, pts);
944 if (st->start_time == AV_NOPTS_VALUE)
945 st->start_time = pts;
948 static void update_initial_durations(AVFormatContext *s, AVStream *st,
949 int stream_index, int duration)
951 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
952 int64_t cur_dts= RELATIVE_TS_BASE;
954 if(st->first_dts != AV_NOPTS_VALUE){
955 cur_dts= st->first_dts;
956 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
957 if(pktl->pkt.stream_index == stream_index){
958 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
963 if(pktl && pktl->pkt.dts != st->first_dts) {
964 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s in the queue\n", av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts));
968 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
971 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
972 st->first_dts = cur_dts;
973 }else if(st->cur_dts != RELATIVE_TS_BASE)
976 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
977 if(pktl->pkt.stream_index != stream_index)
979 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
980 && !pktl->pkt.duration){
981 pktl->pkt.dts= cur_dts;
982 if(!st->codec->has_b_frames)
983 pktl->pkt.pts= cur_dts;
984 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
985 pktl->pkt.duration = duration;
988 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
991 st->cur_dts= cur_dts;
994 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
995 AVCodecParserContext *pc, AVPacket *pkt)
997 int num, den, presentation_delayed, delay, i;
1000 if (s->flags & AVFMT_FLAG_NOFILLIN)
1003 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1004 pkt->dts= AV_NOPTS_VALUE;
1006 if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1007 //FIXME Set low_delay = 0 when has_b_frames = 1
1008 st->codec->has_b_frames = 1;
1010 /* do we have a video B-frame ? */
1011 delay= st->codec->has_b_frames;
1012 presentation_delayed = 0;
1014 /* XXX: need has_b_frame, but cannot get it if the codec is
1017 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1018 presentation_delayed = 1;
1020 if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && st->pts_wrap_bits<63 && pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > pkt->pts){
1021 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1022 pkt->dts -= 1LL<<st->pts_wrap_bits;
1024 pkt->pts += 1LL<<st->pts_wrap_bits;
1027 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1028 // we take the conservative approach and discard both
1029 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1030 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1031 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1032 if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1033 pkt->dts= AV_NOPTS_VALUE;
1036 if (pkt->duration == 0) {
1037 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1039 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1042 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1043 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1045 /* correct timestamps with byte offset if demuxers only have timestamps
1046 on packet boundaries */
1047 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1048 /* this will estimate bitrate based on this frame's duration and size */
1049 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1050 if(pkt->pts != AV_NOPTS_VALUE)
1052 if(pkt->dts != AV_NOPTS_VALUE)
1056 if (pc && pc->dts_sync_point >= 0) {
1057 // we have synchronization info from the parser
1058 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1060 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1061 if (pkt->dts != AV_NOPTS_VALUE) {
1062 // got DTS from the stream, update reference timestamp
1063 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1064 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1065 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1066 // compute DTS based on reference timestamp
1067 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1068 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1070 if (pc->dts_sync_point > 0)
1071 st->reference_dts = pkt->dts; // new reference
1075 /* This may be redundant, but it should not hurt. */
1076 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1077 presentation_delayed = 1;
1079 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1080 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1081 /* interpolate PTS and DTS if they are not present */
1082 //We skip H264 currently because delay and has_b_frames are not reliably set
1083 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1084 if (presentation_delayed) {
1085 /* DTS = decompression timestamp */
1086 /* PTS = presentation timestamp */
1087 if (pkt->dts == AV_NOPTS_VALUE)
1088 pkt->dts = st->last_IP_pts;
1089 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1090 if (pkt->dts == AV_NOPTS_VALUE)
1091 pkt->dts = st->cur_dts;
1093 /* this is tricky: the dts must be incremented by the duration
1094 of the frame we are displaying, i.e. the last I- or P-frame */
1095 if (st->last_IP_duration == 0)
1096 st->last_IP_duration = pkt->duration;
1097 if(pkt->dts != AV_NOPTS_VALUE)
1098 st->cur_dts = pkt->dts + st->last_IP_duration;
1099 st->last_IP_duration = pkt->duration;
1100 st->last_IP_pts= pkt->pts;
1101 /* cannot compute PTS if not present (we can compute it only
1102 by knowing the future */
1103 } else if (pkt->pts != AV_NOPTS_VALUE ||
1104 pkt->dts != AV_NOPTS_VALUE ||
1106 int duration = pkt->duration;
1108 /* presentation is not delayed : PTS and DTS are the same */
1109 if (pkt->pts == AV_NOPTS_VALUE)
1110 pkt->pts = pkt->dts;
1111 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1113 if (pkt->pts == AV_NOPTS_VALUE)
1114 pkt->pts = st->cur_dts;
1115 pkt->dts = pkt->pts;
1116 if (pkt->pts != AV_NOPTS_VALUE)
1117 st->cur_dts = pkt->pts + duration;
1121 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1122 st->pts_buffer[0]= pkt->pts;
1123 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1124 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1125 if(pkt->dts == AV_NOPTS_VALUE)
1126 pkt->dts= st->pts_buffer[0];
1128 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1129 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1131 if(pkt->dts > st->cur_dts)
1132 st->cur_dts = pkt->dts;
1134 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1135 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1138 if (is_intra_only(st->codec))
1139 pkt->flags |= AV_PKT_FLAG_KEY;
1141 pkt->convergence_duration = pc->convergence_duration;
1144 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1147 AVPacketList *pktl = *pkt_buf;
1148 *pkt_buf = pktl->next;
1149 av_free_packet(&pktl->pkt);
1152 *pkt_buf_end = NULL;
1156 * Parse a packet, add all split parts to parse_queue
1158 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1160 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1162 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1163 AVStream *st = s->streams[stream_index];
1164 uint8_t *data = pkt ? pkt->data : NULL;
1165 int size = pkt ? pkt->size : 0;
1166 int ret = 0, got_output = 0;
1169 av_init_packet(&flush_pkt);
1172 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1173 // preserve 0-size sync packets
1174 compute_pkt_fields(s, st, st->parser, pkt);
1177 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1180 av_init_packet(&out_pkt);
1181 len = av_parser_parse2(st->parser, st->codec,
1182 &out_pkt.data, &out_pkt.size, data, size,
1183 pkt->pts, pkt->dts, pkt->pos);
1185 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1187 /* increment read pointer */
1191 got_output = !!out_pkt.size;
1196 if (pkt->side_data) {
1197 out_pkt.side_data = pkt->side_data;
1198 out_pkt.side_data_elems = pkt->side_data_elems;
1199 pkt->side_data = NULL;
1200 pkt->side_data_elems = 0;
1203 /* set the duration */
1204 out_pkt.duration = 0;
1205 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1206 if (st->codec->sample_rate > 0) {
1207 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1208 (AVRational){ 1, st->codec->sample_rate },
1212 } else if (st->codec->time_base.num != 0 &&
1213 st->codec->time_base.den != 0) {
1214 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1215 st->codec->time_base,
1220 out_pkt.stream_index = st->index;
1221 out_pkt.pts = st->parser->pts;
1222 out_pkt.dts = st->parser->dts;
1223 out_pkt.pos = st->parser->pos;
1225 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1226 out_pkt.pos = st->parser->frame_offset;
1228 if (st->parser->key_frame == 1 ||
1229 (st->parser->key_frame == -1 &&
1230 st->parser->pict_type == AV_PICTURE_TYPE_I))
1231 out_pkt.flags |= AV_PKT_FLAG_KEY;
1233 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1234 out_pkt.flags |= AV_PKT_FLAG_KEY;
1236 compute_pkt_fields(s, st, st->parser, &out_pkt);
1238 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1239 out_pkt.buf = pkt->buf;
1241 #if FF_API_DESTRUCT_PACKET
1242 out_pkt.destruct = pkt->destruct;
1243 pkt->destruct = NULL;
1246 if ((ret = av_dup_packet(&out_pkt)) < 0)
1249 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1250 av_free_packet(&out_pkt);
1251 ret = AVERROR(ENOMEM);
1257 /* end of the stream => close and free the parser */
1258 if (pkt == &flush_pkt) {
1259 av_parser_close(st->parser);
1264 av_free_packet(pkt);
1268 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1269 AVPacketList **pkt_buffer_end,
1273 av_assert0(*pkt_buffer);
1276 *pkt_buffer = pktl->next;
1278 *pkt_buffer_end = NULL;
1283 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1285 int ret = 0, i, got_packet = 0;
1287 av_init_packet(pkt);
1289 while (!got_packet && !s->parse_queue) {
1293 /* read next packet */
1294 ret = ff_read_packet(s, &cur_pkt);
1296 if (ret == AVERROR(EAGAIN))
1298 /* flush the parsers */
1299 for(i = 0; i < s->nb_streams; i++) {
1301 if (st->parser && st->need_parsing)
1302 parse_packet(s, NULL, st->index);
1304 /* all remaining packets are now in parse_queue =>
1305 * really terminate parsing */
1309 st = s->streams[cur_pkt.stream_index];
1311 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1312 cur_pkt.dts != AV_NOPTS_VALUE &&
1313 cur_pkt.pts < cur_pkt.dts) {
1314 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1315 cur_pkt.stream_index,
1316 av_ts2str(cur_pkt.pts),
1317 av_ts2str(cur_pkt.dts),
1320 if (s->debug & FF_FDEBUG_TS)
1321 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1322 cur_pkt.stream_index,
1323 av_ts2str(cur_pkt.pts),
1324 av_ts2str(cur_pkt.dts),
1329 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1330 st->parser = av_parser_init(st->codec->codec_id);
1332 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1333 "%s, packets or times may be invalid.\n",
1334 avcodec_get_name(st->codec->codec_id));
1335 /* no parser available: just output the raw packets */
1336 st->need_parsing = AVSTREAM_PARSE_NONE;
1337 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1338 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1339 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1340 st->parser->flags |= PARSER_FLAG_ONCE;
1341 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1342 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1346 if (!st->need_parsing || !st->parser) {
1347 /* no parsing needed: we just output the packet as is */
1349 compute_pkt_fields(s, st, NULL, pkt);
1350 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1351 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1352 ff_reduce_index(s, st->index);
1353 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1356 } else if (st->discard < AVDISCARD_ALL) {
1357 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1361 av_free_packet(&cur_pkt);
1363 if (pkt->flags & AV_PKT_FLAG_KEY)
1364 st->skip_to_keyframe = 0;
1365 if (st->skip_to_keyframe) {
1366 av_free_packet(&cur_pkt);
1374 if (!got_packet && s->parse_queue)
1375 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1377 if(s->debug & FF_FDEBUG_TS)
1378 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1380 av_ts2str(pkt->pts),
1381 av_ts2str(pkt->dts),
1389 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1391 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1397 ret = s->packet_buffer ?
1398 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1399 read_frame_internal(s, pkt);
1406 AVPacketList *pktl = s->packet_buffer;
1409 AVPacket *next_pkt = &pktl->pkt;
1411 if (next_pkt->dts != AV_NOPTS_VALUE) {
1412 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1413 // last dts seen for this stream. if any of packets following
1414 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1415 int64_t last_dts = next_pkt->dts;
1416 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1417 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1418 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1419 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1420 next_pkt->pts = pktl->pkt.dts;
1422 if (last_dts != AV_NOPTS_VALUE) {
1423 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1424 last_dts = pktl->pkt.dts;
1429 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1430 // Fixing the last reference frame had none pts issue (For MXF etc).
1431 // We only do this when
1433 // 2. we are not able to resolve a pts value for current packet.
1434 // 3. the packets for this stream at the end of the files had valid dts.
1435 next_pkt->pts = last_dts + next_pkt->duration;
1437 pktl = s->packet_buffer;
1440 /* read packet from packet buffer, if there is data */
1441 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1442 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1443 ret = read_from_packet_buffer(&s->packet_buffer,
1444 &s->packet_buffer_end, pkt);
1449 ret = read_frame_internal(s, pkt);
1451 if (pktl && ret != AVERROR(EAGAIN)) {
1458 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1459 &s->packet_buffer_end)) < 0)
1460 return AVERROR(ENOMEM);
1465 st = s->streams[pkt->stream_index];
1466 if (st->skip_samples) {
1467 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1468 AV_WL32(p, st->skip_samples);
1469 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1470 st->skip_samples = 0;
1473 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1474 ff_reduce_index(s, st->index);
1475 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1478 if (is_relative(pkt->dts))
1479 pkt->dts -= RELATIVE_TS_BASE;
1480 if (is_relative(pkt->pts))
1481 pkt->pts -= RELATIVE_TS_BASE;
1486 /* XXX: suppress the packet queue */
1487 static void flush_packet_queue(AVFormatContext *s)
1489 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1490 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1491 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1493 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1496 /*******************************************************/
1499 int av_find_default_stream_index(AVFormatContext *s)
1501 int first_audio_index = -1;
1505 if (s->nb_streams <= 0)
1507 for(i = 0; i < s->nb_streams; i++) {
1509 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1510 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1513 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1514 first_audio_index = i;
1516 return first_audio_index >= 0 ? first_audio_index : 0;
1520 * Flush the frame reader.
1522 void ff_read_frame_flush(AVFormatContext *s)
1527 flush_packet_queue(s);
1529 /* for each stream, reset read state */
1530 for(i = 0; i < s->nb_streams; i++) {
1534 av_parser_close(st->parser);
1537 st->last_IP_pts = AV_NOPTS_VALUE;
1538 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1539 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1540 st->reference_dts = AV_NOPTS_VALUE;
1542 st->probe_packets = MAX_PROBE_PACKETS;
1544 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1545 st->pts_buffer[j]= AV_NOPTS_VALUE;
1549 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1553 for(i = 0; i < s->nb_streams; i++) {
1554 AVStream *st = s->streams[i];
1556 st->cur_dts = av_rescale(timestamp,
1557 st->time_base.den * (int64_t)ref_st->time_base.num,
1558 st->time_base.num * (int64_t)ref_st->time_base.den);
1562 void ff_reduce_index(AVFormatContext *s, int stream_index)
1564 AVStream *st= s->streams[stream_index];
1565 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1567 if((unsigned)st->nb_index_entries >= max_entries){
1569 for(i=0; 2*i<st->nb_index_entries; i++)
1570 st->index_entries[i]= st->index_entries[2*i];
1571 st->nb_index_entries= i;
1575 int ff_add_index_entry(AVIndexEntry **index_entries,
1576 int *nb_index_entries,
1577 unsigned int *index_entries_allocated_size,
1578 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1580 AVIndexEntry *entries, *ie;
1583 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1586 if(timestamp == AV_NOPTS_VALUE)
1587 return AVERROR(EINVAL);
1589 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1590 timestamp -= RELATIVE_TS_BASE;
1592 entries = av_fast_realloc(*index_entries,
1593 index_entries_allocated_size,
1594 (*nb_index_entries + 1) *
1595 sizeof(AVIndexEntry));
1599 *index_entries= entries;
1601 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1604 index= (*nb_index_entries)++;
1605 ie= &entries[index];
1606 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1608 ie= &entries[index];
1609 if(ie->timestamp != timestamp){
1610 if(ie->timestamp <= timestamp)
1612 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1613 (*nb_index_entries)++;
1614 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1615 distance= ie->min_distance;
1619 ie->timestamp = timestamp;
1620 ie->min_distance= distance;
1627 int av_add_index_entry(AVStream *st,
1628 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1630 timestamp = wrap_timestamp(st, timestamp);
1631 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1632 &st->index_entries_allocated_size, pos,
1633 timestamp, size, distance, flags);
1636 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1637 int64_t wanted_timestamp, int flags)
1645 //optimize appending index entries at the end
1646 if(b && entries[b-1].timestamp < wanted_timestamp)
1651 timestamp = entries[m].timestamp;
1652 if(timestamp >= wanted_timestamp)
1654 if(timestamp <= wanted_timestamp)
1657 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1659 if(!(flags & AVSEEK_FLAG_ANY)){
1660 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1661 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1670 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1673 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1674 wanted_timestamp, flags);
1677 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1678 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1680 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1681 if (stream_index >= 0)
1682 ts = wrap_timestamp(s->streams[stream_index], ts);
1686 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1688 AVInputFormat *avif= s->iformat;
1689 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1690 int64_t ts_min, ts_max, ts;
1695 if (stream_index < 0)
1698 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1701 ts_min= AV_NOPTS_VALUE;
1702 pos_limit= -1; //gcc falsely says it may be uninitialized
1704 st= s->streams[stream_index];
1705 if(st->index_entries){
1708 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()
1709 index= FFMAX(index, 0);
1710 e= &st->index_entries[index];
1712 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1714 ts_min= e->timestamp;
1715 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1716 pos_min, av_ts2str(ts_min));
1718 av_assert1(index==0);
1721 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1722 av_assert0(index < st->nb_index_entries);
1724 e= &st->index_entries[index];
1725 av_assert1(e->timestamp >= target_ts);
1727 ts_max= e->timestamp;
1728 pos_limit= pos_max - e->min_distance;
1729 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1730 pos_max, pos_limit, av_ts2str(ts_max));
1734 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1739 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1742 ff_read_frame_flush(s);
1743 ff_update_cur_dts(s, st, ts);
1748 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1749 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1752 int64_t limit, ts_max;
1753 int64_t filesize = avio_size(s->pb);
1754 int64_t pos_max = filesize - 1;
1757 pos_max = FFMAX(0, (pos_max) - step);
1758 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1760 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1761 if (ts_max == AV_NOPTS_VALUE)
1765 int64_t tmp_pos = pos_max + 1;
1766 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1767 if(tmp_ts == AV_NOPTS_VALUE)
1771 if(tmp_pos >= filesize)
1783 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1784 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1785 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1786 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1793 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1795 if(ts_min == AV_NOPTS_VALUE){
1796 pos_min = s->data_offset;
1797 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1798 if (ts_min == AV_NOPTS_VALUE)
1802 if(ts_min >= target_ts){
1807 if(ts_max == AV_NOPTS_VALUE){
1808 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1813 if(ts_max <= target_ts){
1818 if(ts_min > ts_max){
1820 }else if(ts_min == ts_max){
1825 while (pos_min < pos_limit) {
1826 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1827 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1828 assert(pos_limit <= pos_max);
1831 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1832 // interpolate position (better than dichotomy)
1833 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1834 + pos_min - approximate_keyframe_distance;
1835 }else if(no_change==1){
1836 // bisection, if interpolation failed to change min or max pos last time
1837 pos = (pos_min + pos_limit)>>1;
1839 /* linear search if bisection failed, can only happen if there
1840 are very few or no keyframes between min/max */
1845 else if(pos > pos_limit)
1849 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1854 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1855 pos_min, pos, pos_max,
1856 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1857 pos_limit, start_pos, no_change);
1858 if(ts == AV_NOPTS_VALUE){
1859 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1862 assert(ts != AV_NOPTS_VALUE);
1863 if (target_ts <= ts) {
1864 pos_limit = start_pos - 1;
1868 if (target_ts >= ts) {
1874 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1875 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1878 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1880 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1881 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1882 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1888 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1889 int64_t pos_min, pos_max;
1891 pos_min = s->data_offset;
1892 pos_max = avio_size(s->pb) - 1;
1894 if (pos < pos_min) pos= pos_min;
1895 else if(pos > pos_max) pos= pos_max;
1897 avio_seek(s->pb, pos, SEEK_SET);
1899 s->io_repositioned = 1;
1904 static int seek_frame_generic(AVFormatContext *s,
1905 int stream_index, int64_t timestamp, int flags)
1912 st = s->streams[stream_index];
1914 index = av_index_search_timestamp(st, timestamp, flags);
1916 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1919 if(index < 0 || index==st->nb_index_entries-1){
1923 if(st->nb_index_entries){
1924 av_assert0(st->index_entries);
1925 ie= &st->index_entries[st->nb_index_entries-1];
1926 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1928 ff_update_cur_dts(s, st, ie->timestamp);
1930 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1936 read_status = av_read_frame(s, &pkt);
1937 } while (read_status == AVERROR(EAGAIN));
1938 if (read_status < 0)
1940 av_free_packet(&pkt);
1941 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1942 if(pkt.flags & AV_PKT_FLAG_KEY)
1944 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1945 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);
1950 index = av_index_search_timestamp(st, timestamp, flags);
1955 ff_read_frame_flush(s);
1956 if (s->iformat->read_seek){
1957 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1960 ie = &st->index_entries[index];
1961 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1963 ff_update_cur_dts(s, st, ie->timestamp);
1968 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1969 int64_t timestamp, int flags)
1974 if (flags & AVSEEK_FLAG_BYTE) {
1975 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1977 ff_read_frame_flush(s);
1978 return seek_frame_byte(s, stream_index, timestamp, flags);
1981 if(stream_index < 0){
1982 stream_index= av_find_default_stream_index(s);
1983 if(stream_index < 0)
1986 st= s->streams[stream_index];
1987 /* timestamp for default must be expressed in AV_TIME_BASE units */
1988 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
1991 /* first, we try the format specific seek */
1992 if (s->iformat->read_seek) {
1993 ff_read_frame_flush(s);
1994 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2001 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2002 ff_read_frame_flush(s);
2003 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2004 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2005 ff_read_frame_flush(s);
2006 return seek_frame_generic(s, stream_index, timestamp, flags);
2012 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2016 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2017 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2018 if ((flags & AVSEEK_FLAG_BACKWARD))
2022 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2023 flags & ~AVSEEK_FLAG_BACKWARD);
2026 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2029 ret = avformat_queue_attached_pictures(s);
2034 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2036 if(min_ts > ts || max_ts < ts)
2038 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2039 return AVERROR(EINVAL);
2042 flags |= AVSEEK_FLAG_ANY;
2043 flags &= ~AVSEEK_FLAG_BACKWARD;
2045 if (s->iformat->read_seek2) {
2047 ff_read_frame_flush(s);
2049 if (stream_index == -1 && s->nb_streams == 1) {
2050 AVRational time_base = s->streams[0]->time_base;
2051 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2052 min_ts = av_rescale_rnd(min_ts, time_base.den,
2053 time_base.num * (int64_t)AV_TIME_BASE,
2054 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2055 max_ts = av_rescale_rnd(max_ts, time_base.den,
2056 time_base.num * (int64_t)AV_TIME_BASE,
2057 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2060 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2063 ret = avformat_queue_attached_pictures(s);
2067 if(s->iformat->read_timestamp){
2068 //try to seek via read_timestamp()
2071 // Fall back on old API if new is not implemented but old is.
2072 // Note the old API has somewhat different semantics.
2073 if (s->iformat->read_seek || 1) {
2074 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2075 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2076 if (ret<0 && ts != min_ts && max_ts != ts) {
2077 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2079 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2084 // try some generic seek like seek_frame_generic() but with new ts semantics
2085 return -1; //unreachable
2088 /*******************************************************/
2091 * Return TRUE if the stream has accurate duration in any stream.
2093 * @return TRUE if the stream has accurate duration for at least one component.
2095 static int has_duration(AVFormatContext *ic)
2100 for(i = 0;i < ic->nb_streams; i++) {
2101 st = ic->streams[i];
2102 if (st->duration != AV_NOPTS_VALUE)
2105 if (ic->duration != AV_NOPTS_VALUE)
2111 * Estimate the stream timings from the one of each components.
2113 * Also computes the global bitrate if possible.
2115 static void update_stream_timings(AVFormatContext *ic)
2117 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2118 int64_t duration, duration1, filesize;
2123 start_time = INT64_MAX;
2124 start_time_text = INT64_MAX;
2125 end_time = INT64_MIN;
2126 duration = INT64_MIN;
2127 for(i = 0;i < ic->nb_streams; i++) {
2128 st = ic->streams[i];
2129 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2130 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2131 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2132 if (start_time1 < start_time_text)
2133 start_time_text = start_time1;
2135 start_time = FFMIN(start_time, start_time1);
2136 end_time1 = AV_NOPTS_VALUE;
2137 if (st->duration != AV_NOPTS_VALUE) {
2138 end_time1 = start_time1
2139 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2140 end_time = FFMAX(end_time, end_time1);
2142 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2143 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2144 p->start_time = start_time1;
2145 if(p->end_time < end_time1)
2146 p->end_time = end_time1;
2149 if (st->duration != AV_NOPTS_VALUE) {
2150 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2151 duration = FFMAX(duration, duration1);
2154 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2155 start_time = start_time_text;
2156 else if(start_time > start_time_text)
2157 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2159 if (start_time != INT64_MAX) {
2160 ic->start_time = start_time;
2161 if (end_time != INT64_MIN) {
2162 if (ic->nb_programs) {
2163 for (i=0; i<ic->nb_programs; i++) {
2164 p = ic->programs[i];
2165 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2166 duration = FFMAX(duration, p->end_time - p->start_time);
2169 duration = FFMAX(duration, end_time - start_time);
2172 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2173 ic->duration = duration;
2175 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2176 /* compute the bitrate */
2177 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2178 (double)ic->duration;
2179 if (bitrate >= 0 && bitrate <= INT_MAX)
2180 ic->bit_rate = bitrate;
2184 static void fill_all_stream_timings(AVFormatContext *ic)
2189 update_stream_timings(ic);
2190 for(i = 0;i < ic->nb_streams; i++) {
2191 st = ic->streams[i];
2192 if (st->start_time == AV_NOPTS_VALUE) {
2193 if(ic->start_time != AV_NOPTS_VALUE)
2194 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2195 if(ic->duration != AV_NOPTS_VALUE)
2196 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2201 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2203 int64_t filesize, duration;
2204 int bit_rate, i, show_warning = 0;
2207 /* if bit_rate is already set, we believe it */
2208 if (ic->bit_rate <= 0) {
2210 for(i=0;i<ic->nb_streams;i++) {
2211 st = ic->streams[i];
2212 if (st->codec->bit_rate > 0)
2213 bit_rate += st->codec->bit_rate;
2215 ic->bit_rate = bit_rate;
2218 /* if duration is already set, we believe it */
2219 if (ic->duration == AV_NOPTS_VALUE &&
2220 ic->bit_rate != 0) {
2221 filesize = ic->pb ? avio_size(ic->pb) : 0;
2223 for(i = 0; i < ic->nb_streams; i++) {
2224 st = ic->streams[i];
2225 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2226 && st->duration == AV_NOPTS_VALUE) {
2227 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2228 st->duration = duration;
2235 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2238 #define DURATION_MAX_READ_SIZE 250000LL
2239 #define DURATION_MAX_RETRY 4
2241 /* only usable for MPEG-PS streams */
2242 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2244 AVPacket pkt1, *pkt = &pkt1;
2246 int read_size, i, ret;
2248 int64_t filesize, offset, duration;
2251 /* flush packet queue */
2252 flush_packet_queue(ic);
2254 for (i=0; i<ic->nb_streams; i++) {
2255 st = ic->streams[i];
2256 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2257 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2260 av_parser_close(st->parser);
2265 /* estimate the end time (duration) */
2266 /* XXX: may need to support wrapping */
2267 filesize = ic->pb ? avio_size(ic->pb) : 0;
2268 end_time = AV_NOPTS_VALUE;
2270 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2274 avio_seek(ic->pb, offset, SEEK_SET);
2277 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2281 ret = ff_read_packet(ic, pkt);
2282 } while(ret == AVERROR(EAGAIN));
2285 read_size += pkt->size;
2286 st = ic->streams[pkt->stream_index];
2287 if (pkt->pts != AV_NOPTS_VALUE &&
2288 (st->start_time != AV_NOPTS_VALUE ||
2289 st->first_dts != AV_NOPTS_VALUE)) {
2290 duration = end_time = pkt->pts;
2291 if (st->start_time != AV_NOPTS_VALUE)
2292 duration -= st->start_time;
2294 duration -= st->first_dts;
2296 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2297 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2298 st->duration = duration;
2299 st->info->last_duration = duration;
2302 av_free_packet(pkt);
2304 }while( end_time==AV_NOPTS_VALUE
2305 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2306 && ++retry <= DURATION_MAX_RETRY);
2308 fill_all_stream_timings(ic);
2310 avio_seek(ic->pb, old_offset, SEEK_SET);
2311 for (i=0; i<ic->nb_streams; i++) {
2313 st->cur_dts= st->first_dts;
2314 st->last_IP_pts = AV_NOPTS_VALUE;
2315 st->reference_dts = AV_NOPTS_VALUE;
2319 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2323 /* get the file size, if possible */
2324 if (ic->iformat->flags & AVFMT_NOFILE) {
2327 file_size = avio_size(ic->pb);
2328 file_size = FFMAX(0, file_size);
2331 if ((!strcmp(ic->iformat->name, "mpeg") ||
2332 !strcmp(ic->iformat->name, "mpegts")) &&
2333 file_size && ic->pb->seekable) {
2334 /* get accurate estimate from the PTSes */
2335 estimate_timings_from_pts(ic, old_offset);
2336 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2337 } else if (has_duration(ic)) {
2338 /* at least one component has timings - we use them for all
2340 fill_all_stream_timings(ic);
2341 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2343 /* less precise: use bitrate info */
2344 estimate_timings_from_bit_rate(ic);
2345 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2347 update_stream_timings(ic);
2351 AVStream av_unused *st;
2352 for(i = 0;i < ic->nb_streams; i++) {
2353 st = ic->streams[i];
2354 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2355 (double) st->start_time / AV_TIME_BASE,
2356 (double) st->duration / AV_TIME_BASE);
2358 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2359 (double) ic->start_time / AV_TIME_BASE,
2360 (double) ic->duration / AV_TIME_BASE,
2361 ic->bit_rate / 1000);
2365 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2367 AVCodecContext *avctx = st->codec;
2369 #define FAIL(errmsg) do { \
2371 *errmsg_ptr = errmsg; \
2375 switch (avctx->codec_type) {
2376 case AVMEDIA_TYPE_AUDIO:
2377 if (!avctx->frame_size && determinable_frame_size(avctx))
2378 FAIL("unspecified frame size");
2379 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2380 FAIL("unspecified sample format");
2381 if (!avctx->sample_rate)
2382 FAIL("unspecified sample rate");
2383 if (!avctx->channels)
2384 FAIL("unspecified number of channels");
2385 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2386 FAIL("no decodable DTS frames");
2388 case AVMEDIA_TYPE_VIDEO:
2390 FAIL("unspecified size");
2391 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2392 FAIL("unspecified pixel format");
2393 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2394 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2395 FAIL("no frame in rv30/40 and no sar");
2397 case AVMEDIA_TYPE_SUBTITLE:
2398 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2399 FAIL("unspecified size");
2401 case AVMEDIA_TYPE_DATA:
2402 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2405 if (avctx->codec_id == AV_CODEC_ID_NONE)
2406 FAIL("unknown codec");
2410 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2411 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2413 const AVCodec *codec;
2414 int got_picture = 1, ret = 0;
2415 AVFrame *frame = avcodec_alloc_frame();
2416 AVSubtitle subtitle;
2417 AVPacket pkt = *avpkt;
2420 return AVERROR(ENOMEM);
2422 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2423 AVDictionary *thread_opt = NULL;
2425 codec = st->codec->codec ? st->codec->codec :
2426 avcodec_find_decoder(st->codec->codec_id);
2429 st->info->found_decoder = -1;
2434 /* force thread count to 1 since the h264 decoder will not extract SPS
2435 * and PPS to extradata during multi-threaded decoding */
2436 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2437 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2439 av_dict_free(&thread_opt);
2441 st->info->found_decoder = -1;
2444 st->info->found_decoder = 1;
2445 } else if (!st->info->found_decoder)
2446 st->info->found_decoder = 1;
2448 if (st->info->found_decoder < 0) {
2453 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2455 (!has_codec_parameters(st, NULL) ||
2456 !has_decode_delay_been_guessed(st) ||
2457 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2459 avcodec_get_frame_defaults(frame);
2460 switch(st->codec->codec_type) {
2461 case AVMEDIA_TYPE_VIDEO:
2462 ret = avcodec_decode_video2(st->codec, frame,
2463 &got_picture, &pkt);
2465 case AVMEDIA_TYPE_AUDIO:
2466 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2468 case AVMEDIA_TYPE_SUBTITLE:
2469 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2470 &got_picture, &pkt);
2478 st->nb_decoded_frames++;
2485 if(!pkt.data && !got_picture)
2489 avcodec_free_frame(&frame);
2493 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2495 while (tags->id != AV_CODEC_ID_NONE) {
2503 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2506 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2507 if(tag == tags[i].tag)
2510 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2511 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2514 return AV_CODEC_ID_NONE;
2517 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2521 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2522 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2523 default: return AV_CODEC_ID_NONE;
2528 if (sflags & (1 << (bps - 1))) {
2530 case 1: return AV_CODEC_ID_PCM_S8;
2531 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2532 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2533 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2534 default: return AV_CODEC_ID_NONE;
2538 case 1: return AV_CODEC_ID_PCM_U8;
2539 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2540 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2541 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2542 default: return AV_CODEC_ID_NONE;
2548 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2551 if (!av_codec_get_tag2(tags, id, &tag))
2556 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2560 for(i=0; tags && tags[i]; i++){
2561 const AVCodecTag *codec_tags = tags[i];
2562 while (codec_tags->id != AV_CODEC_ID_NONE) {
2563 if (codec_tags->id == id) {
2564 *tag = codec_tags->tag;
2573 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2576 for(i=0; tags && tags[i]; i++){
2577 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2578 if(id!=AV_CODEC_ID_NONE) return id;
2580 return AV_CODEC_ID_NONE;
2583 static void compute_chapters_end(AVFormatContext *s)
2586 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2588 for (i = 0; i < s->nb_chapters; i++)
2589 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2590 AVChapter *ch = s->chapters[i];
2591 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2594 for (j = 0; j < s->nb_chapters; j++) {
2595 AVChapter *ch1 = s->chapters[j];
2596 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2597 if (j != i && next_start > ch->start && next_start < end)
2600 ch->end = (end == INT64_MAX) ? ch->start : end;
2604 static int get_std_framerate(int i){
2605 if(i<60*12) return (i+1)*1001;
2606 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2610 * Is the time base unreliable.
2611 * This is a heuristic to balance between quick acceptance of the values in
2612 * the headers vs. some extra checks.
2613 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2614 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2615 * And there are "variable" fps files this needs to detect as well.
2617 static int tb_unreliable(AVCodecContext *c){
2618 if( c->time_base.den >= 101L*c->time_base.num
2619 || c->time_base.den < 5L*c->time_base.num
2620 /* || c->codec_tag == AV_RL32("DIVX")
2621 || c->codec_tag == AV_RL32("XVID")*/
2622 || c->codec_tag == AV_RL32("mp4v")
2623 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2624 || c->codec_id == AV_CODEC_ID_H264
2630 #if FF_API_FORMAT_PARAMETERS
2631 int av_find_stream_info(AVFormatContext *ic)
2633 return avformat_find_stream_info(ic, NULL);
2637 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2639 int i, count, ret = 0, j;
2642 AVPacket pkt1, *pkt;
2643 int64_t old_offset = avio_tell(ic->pb);
2644 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2645 int flush_codecs = ic->probesize > 0;
2648 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2650 for(i=0;i<ic->nb_streams;i++) {
2651 const AVCodec *codec;
2652 AVDictionary *thread_opt = NULL;
2653 st = ic->streams[i];
2655 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2656 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2657 /* if(!st->time_base.num)
2659 if(!st->codec->time_base.num)
2660 st->codec->time_base= st->time_base;
2662 //only for the split stuff
2663 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2664 st->parser = av_parser_init(st->codec->codec_id);
2666 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2667 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2668 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2669 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2671 } else if (st->need_parsing) {
2672 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2673 "%s, packets or times may be invalid.\n",
2674 avcodec_get_name(st->codec->codec_id));
2677 codec = st->codec->codec ? st->codec->codec :
2678 avcodec_find_decoder(st->codec->codec_id);
2680 /* force thread count to 1 since the h264 decoder will not extract SPS
2681 * and PPS to extradata during multi-threaded decoding */
2682 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2684 /* Ensure that subtitle_header is properly set. */
2685 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2686 && codec && !st->codec->codec)
2687 avcodec_open2(st->codec, codec, options ? &options[i]
2690 //try to just open decoders, in case this is enough to get parameters
2691 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2692 if (codec && !st->codec->codec)
2693 avcodec_open2(st->codec, codec, options ? &options[i]
2697 av_dict_free(&thread_opt);
2700 for (i=0; i<ic->nb_streams; i++) {
2701 #if FF_API_R_FRAME_RATE
2702 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2704 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2705 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2711 if (ff_check_interrupt(&ic->interrupt_callback)){
2713 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2717 /* check if one codec still needs to be handled */
2718 for(i=0;i<ic->nb_streams;i++) {
2719 int fps_analyze_framecount = 20;
2721 st = ic->streams[i];
2722 if (!has_codec_parameters(st, NULL))
2724 /* if the timebase is coarse (like the usual millisecond precision
2725 of mkv), we need to analyze more frames to reliably arrive at
2727 if (av_q2d(st->time_base) > 0.0005)
2728 fps_analyze_framecount *= 2;
2729 if (ic->fps_probe_size >= 0)
2730 fps_analyze_framecount = ic->fps_probe_size;
2731 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2732 fps_analyze_framecount = 0;
2733 /* variable fps and no guess at the real fps */
2734 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2735 && st->info->duration_count < fps_analyze_framecount
2736 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2738 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2740 if (st->first_dts == AV_NOPTS_VALUE &&
2741 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2742 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2745 if (i == ic->nb_streams) {
2746 /* NOTE: if the format has no header, then we need to read
2747 some packets to get most of the streams, so we cannot
2749 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2750 /* if we found the info for all the codecs, we can stop */
2752 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2757 /* we did not get all the codec info, but we read too much data */
2758 if (read_size >= ic->probesize) {
2760 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2761 for (i = 0; i < ic->nb_streams; i++)
2762 if (!ic->streams[i]->r_frame_rate.num &&
2763 ic->streams[i]->info->duration_count <= 1)
2764 av_log(ic, AV_LOG_WARNING,
2765 "Stream #%d: not enough frames to estimate rate; "
2766 "consider increasing probesize\n", i);
2770 /* NOTE: a new stream can be added there if no header in file
2771 (AVFMTCTX_NOHEADER) */
2772 ret = read_frame_internal(ic, &pkt1);
2773 if (ret == AVERROR(EAGAIN))
2781 if (ic->flags & AVFMT_FLAG_NOBUFFER) {
2784 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2785 &ic->packet_buffer_end);
2786 if ((ret = av_dup_packet(pkt)) < 0)
2787 goto find_stream_info_err;
2790 read_size += pkt->size;
2792 st = ic->streams[pkt->stream_index];
2793 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2794 /* check for non-increasing dts */
2795 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2796 st->info->fps_last_dts >= pkt->dts) {
2797 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2798 "packet %d with DTS %"PRId64", packet %d with DTS "
2799 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2800 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2801 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2803 /* check for a discontinuity in dts - if the difference in dts
2804 * is more than 1000 times the average packet duration in the sequence,
2805 * we treat it as a discontinuity */
2806 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2807 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2808 (pkt->dts - st->info->fps_last_dts) / 1000 >
2809 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2810 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2811 "packet %d with DTS %"PRId64", packet %d with DTS "
2812 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2813 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2814 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2817 /* update stored dts values */
2818 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
2819 st->info->fps_first_dts = pkt->dts;
2820 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
2822 st->info->fps_last_dts = pkt->dts;
2823 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
2825 if (st->codec_info_nb_frames>1) {
2827 if (st->time_base.den > 0)
2828 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2829 if (st->avg_frame_rate.num > 0)
2830 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
2832 if (t >= ic->max_analyze_duration) {
2833 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
2836 if (pkt->duration) {
2837 st->info->codec_info_duration += pkt->duration;
2838 st->info->codec_info_duration_fields += st->parser && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
2841 #if FF_API_R_FRAME_RATE
2843 int64_t last = st->info->last_dts;
2845 if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
2846 && pkt->dts - (uint64_t)last < INT64_MAX){
2847 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2848 int64_t duration= pkt->dts - last;
2850 if (!st->info->duration_error)
2851 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2853 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2854 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2855 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2856 int framerate= get_std_framerate(i);
2857 double sdts= dts*framerate/(1001*12);
2859 int64_t ticks= llrint(sdts+j*0.5);
2860 double error= sdts - ticks + j*0.5;
2861 st->info->duration_error[j][0][i] += error;
2862 st->info->duration_error[j][1][i] += error*error;
2865 st->info->duration_count++;
2866 // ignore the first 4 values, they might have some random jitter
2867 if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
2868 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2870 if (pkt->dts != AV_NOPTS_VALUE)
2871 st->info->last_dts = pkt->dts;
2874 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2875 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2876 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2877 st->codec->extradata_size= i;
2878 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2879 if (!st->codec->extradata)
2880 return AVERROR(ENOMEM);
2881 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2882 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2886 /* if still no information, we try to open the codec and to
2887 decompress the frame. We try to avoid that in most cases as
2888 it takes longer and uses more memory. For MPEG-4, we need to
2889 decompress for QuickTime.
2891 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2892 least one frame of codec data, this makes sure the codec initializes
2893 the channel configuration and does not only trust the values from the container.
2895 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2897 st->codec_info_nb_frames++;
2902 AVPacket empty_pkt = { 0 };
2904 av_init_packet(&empty_pkt);
2906 for(i=0;i<ic->nb_streams;i++) {
2908 st = ic->streams[i];
2910 /* flush the decoders */
2911 if (st->info->found_decoder == 1) {
2913 err = try_decode_frame(st, &empty_pkt,
2914 (options && i < orig_nb_streams) ?
2915 &options[i] : NULL);
2916 } while (err > 0 && !has_codec_parameters(st, NULL));
2919 av_log(ic, AV_LOG_INFO,
2920 "decoding for stream %d failed\n", st->index);
2926 // close codecs which were opened in try_decode_frame()
2927 for(i=0;i<ic->nb_streams;i++) {
2928 st = ic->streams[i];
2929 avcodec_close(st->codec);
2931 for(i=0;i<ic->nb_streams;i++) {
2932 st = ic->streams[i];
2933 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2934 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2935 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2936 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2937 st->codec->codec_tag= tag;
2940 /* estimate average framerate if not set by demuxer */
2941 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
2943 double best_error = 0.01;
2945 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2946 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
2947 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
2949 /* round guessed framerate to a "standard" framerate if it's
2950 * within 1% of the original estimate*/
2951 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
2952 AVRational std_fps = { get_std_framerate(j), 12*1001 };
2953 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
2955 if (error < best_error) {
2957 best_fps = std_fps.num;
2961 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2962 best_fps, 12*1001, INT_MAX);
2965 // the check for tb_unreliable() is not completely correct, since this is not about handling
2966 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2967 // ipmovie.c produces.
2968 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)
2969 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);
2970 if (st->info->duration_count>1 && !st->r_frame_rate.num
2971 && tb_unreliable(st->codec)) {
2973 double best_error= 0.01;
2975 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2978 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2980 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2983 int n= st->info->duration_count;
2984 double a= st->info->duration_error[k][0][j] / n;
2985 double error= st->info->duration_error[k][1][j]/n - a*a;
2987 if(error < best_error && best_error> 0.000000001){
2989 num = get_std_framerate(j);
2992 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2995 // do not increase frame rate by more than 1 % in order to match a standard rate.
2996 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2997 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3000 if (!st->r_frame_rate.num){
3001 if( st->codec->time_base.den * (int64_t)st->time_base.num
3002 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3003 st->r_frame_rate.num = st->codec->time_base.den;
3004 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3006 st->r_frame_rate.num = st->time_base.den;
3007 st->r_frame_rate.den = st->time_base.num;
3010 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3011 if(!st->codec->bits_per_coded_sample)
3012 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3013 // set stream disposition based on audio service type
3014 switch (st->codec->audio_service_type) {
3015 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3016 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3017 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3018 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3019 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3020 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3021 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3022 st->disposition = AV_DISPOSITION_COMMENT; break;
3023 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3024 st->disposition = AV_DISPOSITION_KARAOKE; break;
3030 estimate_timings(ic, old_offset);
3032 if (ret >= 0 && ic->nb_streams)
3033 ret = -1; /* we could not have all the codec parameters before EOF */
3034 for(i=0;i<ic->nb_streams;i++) {
3036 st = ic->streams[i];
3037 if (!has_codec_parameters(st, &errmsg)) {
3039 avcodec_string(buf, sizeof(buf), st->codec, 0);
3040 av_log(ic, AV_LOG_WARNING,
3041 "Could not find codec parameters for stream %d (%s): %s\n"
3042 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3049 compute_chapters_end(ic);
3051 find_stream_info_err:
3052 for (i=0; i < ic->nb_streams; i++) {
3053 st = ic->streams[i];
3054 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3055 ic->streams[i]->codec->thread_count = 0;
3057 av_freep(&st->info->duration_error);
3058 av_freep(&ic->streams[i]->info);
3061 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
3065 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3069 for (i = 0; i < ic->nb_programs; i++) {
3070 if (ic->programs[i] == last) {
3074 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3075 if (ic->programs[i]->stream_index[j] == s)
3076 return ic->programs[i];
3082 int av_find_best_stream(AVFormatContext *ic,
3083 enum AVMediaType type,
3084 int wanted_stream_nb,
3086 AVCodec **decoder_ret,
3089 int i, nb_streams = ic->nb_streams;
3090 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3091 unsigned *program = NULL;
3092 AVCodec *decoder = NULL, *best_decoder = NULL;
3094 if (related_stream >= 0 && wanted_stream_nb < 0) {
3095 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3097 program = p->stream_index;
3098 nb_streams = p->nb_stream_indexes;
3101 for (i = 0; i < nb_streams; i++) {
3102 int real_stream_index = program ? program[i] : i;
3103 AVStream *st = ic->streams[real_stream_index];
3104 AVCodecContext *avctx = st->codec;
3105 if (avctx->codec_type != type)
3107 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3109 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3112 decoder = avcodec_find_decoder(st->codec->codec_id);
3115 ret = AVERROR_DECODER_NOT_FOUND;
3119 count = st->codec_info_nb_frames;
3120 bitrate = avctx->bit_rate;
3121 multiframe = FFMIN(5, count);
3122 if ((best_multiframe > multiframe) ||
3123 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3124 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3127 best_bitrate = bitrate;
3128 best_multiframe = multiframe;
3129 ret = real_stream_index;
3130 best_decoder = decoder;
3131 if (program && i == nb_streams - 1 && ret < 0) {
3133 nb_streams = ic->nb_streams;
3134 i = 0; /* no related stream found, try again with everything */
3138 *decoder_ret = best_decoder;
3142 /*******************************************************/
3144 int av_read_play(AVFormatContext *s)
3146 if (s->iformat->read_play)
3147 return s->iformat->read_play(s);
3149 return avio_pause(s->pb, 0);
3150 return AVERROR(ENOSYS);
3153 int av_read_pause(AVFormatContext *s)
3155 if (s->iformat->read_pause)
3156 return s->iformat->read_pause(s);
3158 return avio_pause(s->pb, 1);
3159 return AVERROR(ENOSYS);
3162 void ff_free_stream(AVFormatContext *s, AVStream *st){
3163 av_assert0(s->nb_streams>0);
3164 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3167 av_parser_close(st->parser);
3169 if (st->attached_pic.data)
3170 av_free_packet(&st->attached_pic);
3171 av_dict_free(&st->metadata);
3172 av_freep(&st->probe_data.buf);
3173 av_freep(&st->index_entries);
3174 av_freep(&st->codec->extradata);
3175 av_freep(&st->codec->subtitle_header);
3176 av_freep(&st->codec);
3177 av_freep(&st->priv_data);
3179 av_freep(&st->info->duration_error);
3180 av_freep(&st->info);
3181 av_freep(&s->streams[ --s->nb_streams ]);
3184 void avformat_free_context(AVFormatContext *s)
3192 if (s->iformat && s->iformat->priv_class && s->priv_data)
3193 av_opt_free(s->priv_data);
3195 for(i=s->nb_streams-1; i>=0; i--) {
3196 ff_free_stream(s, s->streams[i]);
3198 for(i=s->nb_programs-1; i>=0; i--) {
3199 av_dict_free(&s->programs[i]->metadata);
3200 av_freep(&s->programs[i]->stream_index);
3201 av_freep(&s->programs[i]);
3203 av_freep(&s->programs);
3204 av_freep(&s->priv_data);
3205 while(s->nb_chapters--) {
3206 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3207 av_freep(&s->chapters[s->nb_chapters]);
3209 av_freep(&s->chapters);
3210 av_dict_free(&s->metadata);
3211 av_freep(&s->streams);
3215 #if FF_API_CLOSE_INPUT_FILE
3216 void av_close_input_file(AVFormatContext *s)
3218 avformat_close_input(&s);
3222 void avformat_close_input(AVFormatContext **ps)
3224 AVFormatContext *s = *ps;
3225 AVIOContext *pb = s->pb;
3227 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3228 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3231 flush_packet_queue(s);
3234 if (s->iformat->read_close)
3235 s->iformat->read_close(s);
3238 avformat_free_context(s);
3245 #if FF_API_NEW_STREAM
3246 AVStream *av_new_stream(AVFormatContext *s, int id)
3248 AVStream *st = avformat_new_stream(s, NULL);
3255 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3261 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3263 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
3266 s->streams = streams;
3268 st = av_mallocz(sizeof(AVStream));
3271 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3275 st->info->last_dts = AV_NOPTS_VALUE;
3277 st->codec = avcodec_alloc_context3(c);
3279 /* no default bitrate if decoding */
3280 st->codec->bit_rate = 0;
3282 st->index = s->nb_streams;
3283 st->start_time = AV_NOPTS_VALUE;
3284 st->duration = AV_NOPTS_VALUE;
3285 /* we set the current DTS to 0 so that formats without any timestamps
3286 but durations get some timestamps, formats with some unknown
3287 timestamps have their first few packets buffered and the
3288 timestamps corrected before they are returned to the user */
3289 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3290 st->first_dts = AV_NOPTS_VALUE;
3291 st->probe_packets = MAX_PROBE_PACKETS;
3292 st->pts_wrap_reference = AV_NOPTS_VALUE;
3293 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3295 /* default pts setting is MPEG-like */
3296 avpriv_set_pts_info(st, 33, 1, 90000);
3297 st->last_IP_pts = AV_NOPTS_VALUE;
3298 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3299 st->pts_buffer[i]= AV_NOPTS_VALUE;
3300 st->reference_dts = AV_NOPTS_VALUE;
3302 st->sample_aspect_ratio = (AVRational){0,1};
3304 #if FF_API_R_FRAME_RATE
3305 st->info->last_dts = AV_NOPTS_VALUE;
3307 st->info->fps_first_dts = AV_NOPTS_VALUE;
3308 st->info->fps_last_dts = AV_NOPTS_VALUE;
3310 s->streams[s->nb_streams++] = st;
3314 AVProgram *av_new_program(AVFormatContext *ac, int id)
3316 AVProgram *program=NULL;
3319 av_dlog(ac, "new_program: id=0x%04x\n", id);
3321 for(i=0; i<ac->nb_programs; i++)
3322 if(ac->programs[i]->id == id)
3323 program = ac->programs[i];
3326 program = av_mallocz(sizeof(AVProgram));
3329 dynarray_add(&ac->programs, &ac->nb_programs, program);
3330 program->discard = AVDISCARD_NONE;
3333 program->pts_wrap_reference = AV_NOPTS_VALUE;
3334 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3336 program->start_time =
3337 program->end_time = AV_NOPTS_VALUE;
3342 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3344 AVChapter *chapter = NULL;
3347 for(i=0; i<s->nb_chapters; i++)
3348 if(s->chapters[i]->id == id)
3349 chapter = s->chapters[i];
3352 chapter= av_mallocz(sizeof(AVChapter));
3355 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3357 av_dict_set(&chapter->metadata, "title", title, 0);
3359 chapter->time_base= time_base;
3360 chapter->start = start;
3366 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3369 AVProgram *program=NULL;
3372 if (idx >= ac->nb_streams) {
3373 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3377 for(i=0; i<ac->nb_programs; i++){
3378 if(ac->programs[i]->id != progid)
3380 program = ac->programs[i];
3381 for(j=0; j<program->nb_stream_indexes; j++)
3382 if(program->stream_index[j] == idx)
3385 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3388 program->stream_index = tmp;
3389 program->stream_index[program->nb_stream_indexes++] = idx;
3394 static void print_fps(double d, const char *postfix){
3395 uint64_t v= lrintf(d*100);
3396 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3397 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3398 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3401 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3403 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3404 AVDictionaryEntry *tag=NULL;
3406 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3407 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3408 if(strcmp("language", tag->key)){
3409 const char *p = tag->value;
3410 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3413 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3414 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3415 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3417 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3418 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3421 av_log(ctx, AV_LOG_INFO, "\n");
3427 /* "user interface" functions */
3428 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3431 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3432 AVStream *st = ic->streams[i];
3433 int g = av_gcd(st->time_base.num, st->time_base.den);
3434 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3435 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3436 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3437 /* the pid is an important information, so we display it */
3438 /* XXX: add a generic system */
3439 if (flags & AVFMT_SHOW_IDS)
3440 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3442 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3443 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3444 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3445 if (st->sample_aspect_ratio.num && // default
3446 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3447 AVRational display_aspect_ratio;
3448 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3449 st->codec->width*st->sample_aspect_ratio.num,
3450 st->codec->height*st->sample_aspect_ratio.den,
3452 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3453 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3454 display_aspect_ratio.num, display_aspect_ratio.den);
3456 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3457 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3458 print_fps(av_q2d(st->avg_frame_rate), "fps");
3459 #if FF_API_R_FRAME_RATE
3460 if(st->r_frame_rate.den && st->r_frame_rate.num)
3461 print_fps(av_q2d(st->r_frame_rate), "tbr");
3463 if(st->time_base.den && st->time_base.num)
3464 print_fps(1/av_q2d(st->time_base), "tbn");
3465 if(st->codec->time_base.den && st->codec->time_base.num)
3466 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3468 if (st->disposition & AV_DISPOSITION_DEFAULT)
3469 av_log(NULL, AV_LOG_INFO, " (default)");
3470 if (st->disposition & AV_DISPOSITION_DUB)
3471 av_log(NULL, AV_LOG_INFO, " (dub)");
3472 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3473 av_log(NULL, AV_LOG_INFO, " (original)");
3474 if (st->disposition & AV_DISPOSITION_COMMENT)
3475 av_log(NULL, AV_LOG_INFO, " (comment)");
3476 if (st->disposition & AV_DISPOSITION_LYRICS)
3477 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3478 if (st->disposition & AV_DISPOSITION_KARAOKE)
3479 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3480 if (st->disposition & AV_DISPOSITION_FORCED)
3481 av_log(NULL, AV_LOG_INFO, " (forced)");
3482 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3483 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3484 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3485 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3486 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3487 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3488 av_log(NULL, AV_LOG_INFO, "\n");
3489 dump_metadata(NULL, st->metadata, " ");
3492 void av_dump_format(AVFormatContext *ic,
3498 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3499 if (ic->nb_streams && !printed)
3502 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3503 is_output ? "Output" : "Input",
3505 is_output ? ic->oformat->name : ic->iformat->name,
3506 is_output ? "to" : "from", url);
3507 dump_metadata(NULL, ic->metadata, " ");
3509 av_log(NULL, AV_LOG_INFO, " Duration: ");
3510 if (ic->duration != AV_NOPTS_VALUE) {
3511 int hours, mins, secs, us;
3512 int64_t duration = ic->duration + 5000;
3513 secs = duration / AV_TIME_BASE;
3514 us = duration % AV_TIME_BASE;
3519 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3520 (100 * us) / AV_TIME_BASE);
3522 av_log(NULL, AV_LOG_INFO, "N/A");
3524 if (ic->start_time != AV_NOPTS_VALUE) {
3526 av_log(NULL, AV_LOG_INFO, ", start: ");
3527 secs = ic->start_time / AV_TIME_BASE;
3528 us = abs(ic->start_time % AV_TIME_BASE);
3529 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3530 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3532 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3534 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3536 av_log(NULL, AV_LOG_INFO, "N/A");
3538 av_log(NULL, AV_LOG_INFO, "\n");
3540 for (i = 0; i < ic->nb_chapters; i++) {
3541 AVChapter *ch = ic->chapters[i];
3542 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3543 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3544 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3546 dump_metadata(NULL, ch->metadata, " ");
3548 if(ic->nb_programs) {
3549 int j, k, total = 0;
3550 for(j=0; j<ic->nb_programs; j++) {
3551 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3553 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3554 name ? name->value : "");
3555 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3556 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3557 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3558 printed[ic->programs[j]->stream_index[k]] = 1;
3560 total += ic->programs[j]->nb_stream_indexes;
3562 if (total < ic->nb_streams)
3563 av_log(NULL, AV_LOG_INFO, " No Program\n");
3565 for(i=0;i<ic->nb_streams;i++)
3567 dump_stream_format(ic, i, index, is_output);
3572 uint64_t ff_ntp_time(void)
3574 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3577 int av_get_frame_filename(char *buf, int buf_size,
3578 const char *path, int number)
3581 char *q, buf1[20], c;
3582 int nd, len, percentd_found;
3594 while (av_isdigit(*p)) {
3595 nd = nd * 10 + *p++ - '0';
3598 } while (av_isdigit(c));
3607 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3609 if ((q - buf + len) > buf_size - 1)
3611 memcpy(q, buf1, len);
3619 if ((q - buf) < buf_size - 1)
3623 if (!percentd_found)
3632 static void hex_dump_internal(void *avcl, FILE *f, int level,
3633 const uint8_t *buf, int size)
3636 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3638 for(i=0;i<size;i+=16) {
3645 PRINT(" %02x", buf[i+j]);
3650 for(j=0;j<len;j++) {
3652 if (c < ' ' || c > '~')
3661 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3663 hex_dump_internal(NULL, f, 0, buf, size);
3666 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3668 hex_dump_internal(avcl, NULL, level, buf, size);
3671 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3673 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3674 PRINT("stream #%d:\n", pkt->stream_index);
3675 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3676 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3677 /* DTS is _always_ valid after av_read_frame() */
3679 if (pkt->dts == AV_NOPTS_VALUE)
3682 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3683 /* PTS may not be known if B-frames are present. */
3685 if (pkt->pts == AV_NOPTS_VALUE)
3688 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3690 PRINT(" size=%d\n", pkt->size);
3693 av_hex_dump(f, pkt->data, pkt->size);
3697 void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
3699 AVRational tb = { 1, AV_TIME_BASE };
3700 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, tb);
3704 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3706 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3710 void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
3712 AVRational tb = { 1, AV_TIME_BASE };
3713 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, tb);
3717 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3720 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3723 void av_url_split(char *proto, int proto_size,
3724 char *authorization, int authorization_size,
3725 char *hostname, int hostname_size,
3727 char *path, int path_size,
3730 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3732 if (port_ptr) *port_ptr = -1;
3733 if (proto_size > 0) proto[0] = 0;
3734 if (authorization_size > 0) authorization[0] = 0;
3735 if (hostname_size > 0) hostname[0] = 0;
3736 if (path_size > 0) path[0] = 0;
3738 /* parse protocol */
3739 if ((p = strchr(url, ':'))) {
3740 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3745 /* no protocol means plain filename */
3746 av_strlcpy(path, url, path_size);
3750 /* separate path from hostname */
3751 ls = strchr(p, '/');
3752 ls2 = strchr(p, '?');
3756 ls = FFMIN(ls, ls2);
3758 av_strlcpy(path, ls, path_size);
3760 ls = &p[strlen(p)]; // XXX
3762 /* the rest is hostname, use that to parse auth/port */
3764 /* authorization (user[:pass]@hostname) */
3766 while ((at = strchr(p, '@')) && at < ls) {
3767 av_strlcpy(authorization, at2,
3768 FFMIN(authorization_size, at + 1 - at2));
3769 p = at + 1; /* skip '@' */
3772 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3774 av_strlcpy(hostname, p + 1,
3775 FFMIN(hostname_size, brk - p));
3776 if (brk[1] == ':' && port_ptr)
3777 *port_ptr = atoi(brk + 2);
3778 } else if ((col = strchr(p, ':')) && col < ls) {
3779 av_strlcpy(hostname, p,
3780 FFMIN(col + 1 - p, hostname_size));
3781 if (port_ptr) *port_ptr = atoi(col + 1);
3783 av_strlcpy(hostname, p,
3784 FFMIN(ls + 1 - p, hostname_size));
3788 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3791 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3794 'C', 'D', 'E', 'F' };
3795 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3798 'c', 'd', 'e', 'f' };
3799 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3801 for(i = 0; i < s; i++) {
3802 buff[i * 2] = hex_table[src[i] >> 4];
3803 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3809 int ff_hex_to_data(uint8_t *data, const char *p)
3816 p += strspn(p, SPACE_CHARS);
3819 c = av_toupper((unsigned char) *p++);
3820 if (c >= '0' && c <= '9')
3822 else if (c >= 'A' && c <= 'F')
3837 #if FF_API_SET_PTS_INFO
3838 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3839 unsigned int pts_num, unsigned int pts_den)
3841 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3845 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3846 unsigned int pts_num, unsigned int pts_den)
3849 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3850 if(new_tb.num != pts_num)
3851 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3853 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3855 if(new_tb.num <= 0 || new_tb.den <= 0) {
3856 av_log(NULL, AV_LOG_ERROR, "Ignoring attempt to set invalid timebase %d/%d for st:%d\n", new_tb.num, new_tb.den, s->index);
3859 s->time_base = new_tb;
3860 av_codec_set_pkt_timebase(s->codec, new_tb);
3861 s->pts_wrap_bits = pts_wrap_bits;
3864 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3867 const char *ptr = str;
3869 /* Parse key=value pairs. */
3872 char *dest = NULL, *dest_end;
3873 int key_len, dest_len = 0;
3875 /* Skip whitespace and potential commas. */
3876 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
3883 if (!(ptr = strchr(key, '=')))
3886 key_len = ptr - key;
3888 callback_get_buf(context, key, key_len, &dest, &dest_len);
3889 dest_end = dest + dest_len - 1;
3893 while (*ptr && *ptr != '\"') {
3897 if (dest && dest < dest_end)
3901 if (dest && dest < dest_end)
3909 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
3910 if (dest && dest < dest_end)
3918 int ff_find_stream_index(AVFormatContext *s, int id)
3921 for (i = 0; i < s->nb_streams; i++) {
3922 if (s->streams[i]->id == id)
3928 int64_t ff_iso8601_to_unix_time(const char *datestr)
3930 struct tm time1 = {0}, time2 = {0};
3932 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
3933 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
3935 return av_timegm(&time2);
3937 return av_timegm(&time1);
3940 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
3943 if (ofmt->query_codec)
3944 return ofmt->query_codec(codec_id, std_compliance);
3945 else if (ofmt->codec_tag)
3946 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
3947 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
3948 codec_id == ofmt->subtitle_codec)
3951 return AVERROR_PATCHWELCOME;
3954 int avformat_network_init(void)
3958 ff_network_inited_globally = 1;
3959 if ((ret = ff_network_init()) < 0)
3966 int avformat_network_deinit(void)
3975 int ff_add_param_change(AVPacket *pkt, int32_t channels,
3976 uint64_t channel_layout, int32_t sample_rate,
3977 int32_t width, int32_t height)
3983 return AVERROR(EINVAL);
3986 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
3988 if (channel_layout) {
3990 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
3994 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
3996 if (width || height) {
3998 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4000 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4002 return AVERROR(ENOMEM);
4003 bytestream_put_le32(&data, flags);
4005 bytestream_put_le32(&data, channels);
4007 bytestream_put_le64(&data, channel_layout);
4009 bytestream_put_le32(&data, sample_rate);
4010 if (width || height) {
4011 bytestream_put_le32(&data, width);
4012 bytestream_put_le32(&data, height);
4017 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4019 AVRational undef = {0, 1};
4020 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4021 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4022 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4024 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4025 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4026 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4027 stream_sample_aspect_ratio = undef;
4029 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4030 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4031 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4032 frame_sample_aspect_ratio = undef;
4034 if (stream_sample_aspect_ratio.num)
4035 return stream_sample_aspect_ratio;
4037 return frame_sample_aspect_ratio;
4040 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4042 AVRational fr = st->r_frame_rate;
4044 if (st->codec->ticks_per_frame > 1) {
4045 AVRational codec_fr = av_inv_q(st->codec->time_base);
4046 AVRational avg_fr = st->avg_frame_rate;
4047 codec_fr.den *= st->codec->ticks_per_frame;
4048 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4049 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4056 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4059 if (*spec <= '9' && *spec >= '0') /* opt:index */
4060 return strtol(spec, NULL, 0) == st->index;
4061 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4062 *spec == 't') { /* opt:[vasdt] */
4063 enum AVMediaType type;
4066 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4067 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4068 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4069 case 'd': type = AVMEDIA_TYPE_DATA; break;
4070 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4071 default: av_assert0(0);
4073 if (type != st->codec->codec_type)
4075 if (*spec++ == ':') { /* possibly followed by :index */
4076 int i, index = strtol(spec, NULL, 0);
4077 for (i = 0; i < s->nb_streams; i++)
4078 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4079 return i == st->index;
4083 } else if (*spec == 'p' && *(spec + 1) == ':') {
4087 prog_id = strtol(spec, &endptr, 0);
4088 for (i = 0; i < s->nb_programs; i++) {
4089 if (s->programs[i]->id != prog_id)
4092 if (*endptr++ == ':') {
4093 int stream_idx = strtol(endptr, NULL, 0);
4094 return stream_idx >= 0 &&
4095 stream_idx < s->programs[i]->nb_stream_indexes &&
4096 st->index == s->programs[i]->stream_index[stream_idx];
4099 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4100 if (st->index == s->programs[i]->stream_index[j])
4104 } else if (*spec == '#') {
4107 sid = strtol(spec + 1, &endptr, 0);
4109 return st->id == sid;
4110 } else if (!*spec) /* empty specifier, matches everything */
4113 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4114 return AVERROR(EINVAL);
4117 void ff_generate_avci_extradata(AVStream *st)
4119 static const uint8_t avci100_1080p_extradata[] = {
4121 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4122 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4123 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4124 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4125 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4126 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4127 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4128 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4129 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4131 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4134 static const uint8_t avci100_1080i_extradata[] = {
4136 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4137 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4138 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4139 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4140 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4141 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4142 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4143 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4144 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4145 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4146 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4148 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4151 static const uint8_t avci50_1080i_extradata[] = {
4153 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4154 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4155 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4156 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4157 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4158 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4159 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4160 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4161 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4162 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4163 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4165 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4168 static const uint8_t avci100_720p_extradata[] = {
4170 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4171 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4172 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4173 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4174 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4175 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4176 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4177 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4178 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4179 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4181 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4185 const uint8_t *data = 0;
4186 if (st->codec->width == 1920) {
4187 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4188 data = avci100_1080p_extradata;
4189 size = sizeof(avci100_1080p_extradata);
4191 data = avci100_1080i_extradata;
4192 size = sizeof(avci100_1080i_extradata);
4194 } else if (st->codec->width == 1440) {
4195 data = avci50_1080i_extradata;
4196 size = sizeof(avci50_1080i_extradata);
4197 } else if (st->codec->width == 1280) {
4198 data = avci100_720p_extradata;
4199 size = sizeof(avci100_720p_extradata);
4203 av_freep(&st->codec->extradata);
4204 st->codec->extradata_size = 0;
4205 st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
4206 if (!st->codec->extradata)