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/internal.h"
32 #include "libavutil/pixdesc.h"
35 #include "libavutil/avassert.h"
36 #include "libavutil/avstring.h"
37 #include "libavutil/mathematics.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/time.h"
40 #include "libavutil/timestamp.h"
42 #include "audiointerleave.h"
54 * various utility functions for use within FFmpeg
57 unsigned avformat_version(void)
59 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
60 return LIBAVFORMAT_VERSION_INT;
63 const char *avformat_configuration(void)
65 return FFMPEG_CONFIGURATION;
68 const char *avformat_license(void)
70 #define LICENSE_PREFIX "libavformat license: "
71 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
74 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
76 static int is_relative(int64_t ts) {
77 return ts > (RELATIVE_TS_BASE - (1LL<<48));
81 * Wrap a given time stamp, if there is an indication for an overflow
84 * @param timestamp the time stamp to wrap
85 * @return resulting time stamp
87 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
89 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
90 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
91 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
92 timestamp < st->pts_wrap_reference)
93 return timestamp + (1ULL<<st->pts_wrap_bits);
94 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
95 timestamp >= st->pts_wrap_reference)
96 return timestamp - (1ULL<<st->pts_wrap_bits);
101 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
103 int av_format_get_probe_score(const AVFormatContext *s)
105 return s->probe_score;
108 /* an arbitrarily chosen "sane" max packet size -- 50M */
109 #define SANE_CHUNK_SIZE (50000000)
111 int ffio_limit(AVIOContext *s, int size)
114 int64_t remaining= s->maxsize - avio_tell(s);
115 if(remaining < size){
116 int64_t newsize= avio_size(s);
117 if(!s->maxsize || s->maxsize<newsize)
118 s->maxsize= newsize - !newsize;
119 remaining= s->maxsize - avio_tell(s);
120 remaining= FFMAX(remaining, 0);
123 if(s->maxsize>=0 && remaining+1 < size){
124 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
132 * Read the data in sane-sized chunks and append to pkt.
133 * Return the number of bytes read or an error.
135 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
137 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
138 int orig_size = pkt->size;
142 int prev_size = pkt->size;
146 * When the caller requests a lot of data, limit it to the amount left
147 * in file or SANE_CHUNK_SIZE when it is not known
150 if (read_size > SANE_CHUNK_SIZE/10) {
151 read_size = ffio_limit(s, read_size);
152 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
154 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
157 ret = av_grow_packet(pkt, read_size);
161 ret = avio_read(s, pkt->data + prev_size, read_size);
162 if (ret != read_size) {
163 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
170 pkt->flags |= AV_PKT_FLAG_CORRUPT;
175 return pkt->size > orig_size ? pkt->size - orig_size : ret;
178 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
183 pkt->pos = avio_tell(s);
185 return append_packet_chunked(s, pkt, size);
188 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
191 return av_get_packet(s, pkt, size);
192 return append_packet_chunked(s, pkt, size);
196 int av_filename_number_test(const char *filename)
199 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
202 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
204 AVProbeData lpd = *pd;
205 AVInputFormat *fmt1 = NULL, *fmt;
206 int score, nodat = 0, score_max=0;
207 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
210 lpd.buf = zerobuffer;
212 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
213 int id3len = ff_id3v2_tag_len(lpd.buf);
214 if (lpd.buf_size > id3len + 16) {
216 lpd.buf_size -= id3len;
222 while ((fmt1 = av_iformat_next(fmt1))) {
223 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
226 if (fmt1->read_probe) {
227 score = fmt1->read_probe(&lpd);
228 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
229 score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
230 } else if (fmt1->extensions) {
231 if (av_match_ext(lpd.filename, fmt1->extensions)) {
232 score = AVPROBE_SCORE_EXTENSION;
235 if (score > score_max) {
238 }else if (score == score_max)
242 score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
243 *score_ret= score_max;
248 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
251 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
252 if(score_ret > *score_max){
253 *score_max= score_ret;
259 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
261 return av_probe_input_format2(pd, is_opened, &score);
264 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
266 static const struct {
267 const char *name; enum AVCodecID id; enum AVMediaType type;
269 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
270 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
271 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
272 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
273 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
274 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
275 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
276 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
277 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
281 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
283 if (fmt && st->request_probe <= score) {
285 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
286 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
287 for (i = 0; fmt_id_type[i].name; i++) {
288 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
289 st->codec->codec_id = fmt_id_type[i].id;
290 st->codec->codec_type = fmt_id_type[i].type;
298 /************************************************************/
299 /* input media file */
301 int av_demuxer_open(AVFormatContext *ic){
304 if (ic->iformat->read_header) {
305 err = ic->iformat->read_header(ic);
310 if (ic->pb && !ic->data_offset)
311 ic->data_offset = avio_tell(ic->pb);
317 int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
318 const char *filename, void *logctx,
319 unsigned int offset, unsigned int max_probe_size)
321 AVProbeData pd = { filename ? filename : "", NULL, -offset };
322 unsigned char *buf = NULL;
324 int ret = 0, probe_size, buf_offset = 0;
327 if (!max_probe_size) {
328 max_probe_size = PROBE_BUF_MAX;
329 } else if (max_probe_size > PROBE_BUF_MAX) {
330 max_probe_size = PROBE_BUF_MAX;
331 } else if (max_probe_size < PROBE_BUF_MIN) {
332 av_log(logctx, AV_LOG_ERROR,
333 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
334 return AVERROR(EINVAL);
337 if (offset >= max_probe_size) {
338 return AVERROR(EINVAL);
341 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
342 if (!av_strcasecmp(mime_type, "audio/aacp")) {
343 *fmt = av_find_input_format("aac");
345 av_freep(&mime_type);
348 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
349 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
352 if (probe_size < offset) {
355 score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
357 /* read probe data */
358 buftmp = av_realloc(buf, probe_size + AVPROBE_PADDING_SIZE);
361 return AVERROR(ENOMEM);
364 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
365 /* fail if error was not end of file, otherwise, lower score */
366 if (ret != AVERROR_EOF) {
371 ret = 0; /* error was end of file, nothing read */
373 pd.buf_size = buf_offset += ret;
374 pd.buf = &buf[offset];
376 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
378 /* guess file format */
379 *fmt = av_probe_input_format2(&pd, 1, &score);
381 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
382 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
384 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
390 return AVERROR_INVALIDDATA;
393 /* rewind. reuse probe buffer to avoid seeking */
394 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
396 return ret < 0 ? ret : score;
399 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
400 const char *filename, void *logctx,
401 unsigned int offset, unsigned int max_probe_size)
403 int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size);
404 return ret < 0 ? ret : 0;
408 /* open input file and probe the format if necessary */
409 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
412 AVProbeData pd = {filename, NULL, 0};
413 int score = AVPROBE_SCORE_RETRY;
416 s->flags |= AVFMT_FLAG_CUSTOM_IO;
418 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
419 else if (s->iformat->flags & AVFMT_NOFILE)
420 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
421 "will be ignored with AVFMT_NOFILE format.\n");
425 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
426 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
429 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
430 &s->interrupt_callback, options)) < 0)
434 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
437 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
438 AVPacketList **plast_pktl){
439 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
444 (*plast_pktl)->next = pktl;
446 *packet_buffer = pktl;
448 /* add the packet in the buffered packet list */
454 int avformat_queue_attached_pictures(AVFormatContext *s)
457 for (i = 0; i < s->nb_streams; i++)
458 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
459 s->streams[i]->discard < AVDISCARD_ALL) {
460 AVPacket copy = s->streams[i]->attached_pic;
461 copy.buf = av_buffer_ref(copy.buf);
463 return AVERROR(ENOMEM);
465 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
470 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
472 AVFormatContext *s = *ps;
474 AVDictionary *tmp = NULL;
475 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
477 if (!s && !(s = avformat_alloc_context()))
478 return AVERROR(ENOMEM);
480 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
481 return AVERROR(EINVAL);
487 av_dict_copy(&tmp, *options, 0);
489 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
492 if ((ret = init_input(s, filename, &tmp)) < 0)
494 s->probe_score = ret;
495 avio_skip(s->pb, s->skip_initial_bytes);
497 /* check filename in case an image number is expected */
498 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
499 if (!av_filename_number_test(filename)) {
500 ret = AVERROR(EINVAL);
505 s->duration = s->start_time = AV_NOPTS_VALUE;
506 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
508 /* allocate private data */
509 if (s->iformat->priv_data_size > 0) {
510 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
511 ret = AVERROR(ENOMEM);
514 if (s->iformat->priv_class) {
515 *(const AVClass**)s->priv_data = s->iformat->priv_class;
516 av_opt_set_defaults(s->priv_data);
517 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
522 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
524 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
526 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
527 if ((ret = s->iformat->read_header(s)) < 0)
530 if (id3v2_extra_meta) {
531 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
532 !strcmp(s->iformat->name, "tta")) {
533 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
536 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
538 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
540 if ((ret = avformat_queue_attached_pictures(s)) < 0)
543 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
544 s->data_offset = avio_tell(s->pb);
546 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
549 av_dict_free(options);
556 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
558 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
560 avformat_free_context(s);
565 /*******************************************************/
567 static void force_codec_ids(AVFormatContext *s, AVStream *st)
569 switch(st->codec->codec_type){
570 case AVMEDIA_TYPE_VIDEO:
571 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
573 case AVMEDIA_TYPE_AUDIO:
574 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
576 case AVMEDIA_TYPE_SUBTITLE:
577 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
582 static void probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
584 if(st->request_probe>0){
585 AVProbeData *pd = &st->probe_data;
587 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
591 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
595 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
596 pd->buf_size += pkt->size;
597 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
600 st->probe_packets = 0;
602 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
607 end= s->raw_packet_buffer_remaining_size <= 0
608 || st->probe_packets<=0;
610 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
611 int score= set_codec_from_probe_data(s, st, pd);
612 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
616 st->request_probe= -1;
617 if(st->codec->codec_id != AV_CODEC_ID_NONE){
618 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
620 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
622 force_codec_ids(s, st);
627 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
633 AVPacketList *pktl = s->raw_packet_buffer;
637 st = s->streams[pkt->stream_index];
638 if (s->raw_packet_buffer_remaining_size <= 0)
639 probe_codec(s, st, NULL);
640 if(st->request_probe <= 0){
641 s->raw_packet_buffer = pktl->next;
642 s->raw_packet_buffer_remaining_size += pkt->size;
651 ret= s->iformat->read_packet(s, pkt);
653 if (!pktl || ret == AVERROR(EAGAIN))
655 for (i = 0; i < s->nb_streams; i++) {
657 if (st->probe_packets) {
658 probe_codec(s, st, NULL);
660 av_assert0(st->request_probe <= 0);
665 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
666 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
667 av_log(s, AV_LOG_WARNING,
668 "Dropped corrupted packet (stream = %d)\n",
674 if(!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
675 av_packet_merge_side_data(pkt);
677 if(pkt->stream_index >= (unsigned)s->nb_streams){
678 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
682 st= s->streams[pkt->stream_index];
683 pkt->dts = wrap_timestamp(st, pkt->dts);
684 pkt->pts = wrap_timestamp(st, pkt->pts);
686 force_codec_ids(s, st);
688 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
689 if (s->use_wallclock_as_timestamps)
690 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
692 if(!pktl && st->request_probe <= 0)
695 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
696 s->raw_packet_buffer_remaining_size -= pkt->size;
698 probe_codec(s, st, pkt);
702 #if FF_API_READ_PACKET
703 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
705 return ff_read_packet(s, pkt);
710 /**********************************************************/
712 static int determinable_frame_size(AVCodecContext *avctx)
714 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
715 avctx->codec_id == AV_CODEC_ID_MP1 ||
716 avctx->codec_id == AV_CODEC_ID_MP2 ||
717 avctx->codec_id == AV_CODEC_ID_MP3/* ||
718 avctx->codec_id == AV_CODEC_ID_CELT*/)
724 * Get the number of samples of an audio frame. Return -1 on error.
726 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
730 /* give frame_size priority if demuxing */
731 if (!mux && enc->frame_size > 1)
732 return enc->frame_size;
734 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
737 /* Fall back on using frame_size if muxing. */
738 if (enc->frame_size > 1)
739 return enc->frame_size;
741 //For WMA we currently have no other means to calculate duration thus we
742 //do it here by assuming CBR, which is true for all known cases.
743 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
744 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
745 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
753 * Return the frame duration in seconds. Return 0 if not available.
755 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
756 AVCodecParserContext *pc, AVPacket *pkt)
762 switch(st->codec->codec_type) {
763 case AVMEDIA_TYPE_VIDEO:
764 if (st->r_frame_rate.num && !pc) {
765 *pnum = st->r_frame_rate.den;
766 *pden = st->r_frame_rate.num;
767 } else if(st->time_base.num*1000LL > st->time_base.den) {
768 *pnum = st->time_base.num;
769 *pden = st->time_base.den;
770 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
771 *pnum = st->codec->time_base.num;
772 *pden = st->codec->time_base.den;
773 if (pc && pc->repeat_pict) {
774 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
775 *pden /= 1 + pc->repeat_pict;
777 *pnum *= 1 + pc->repeat_pict;
779 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
780 //Thus if we have no parser in such case leave duration undefined.
781 if(st->codec->ticks_per_frame>1 && !pc){
786 case AVMEDIA_TYPE_AUDIO:
787 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
788 if (frame_size <= 0 || st->codec->sample_rate <= 0)
791 *pden = st->codec->sample_rate;
798 static int is_intra_only(AVCodecContext *enc){
799 const AVCodecDescriptor *desc;
801 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
804 desc = av_codec_get_codec_descriptor(enc);
806 desc = avcodec_descriptor_get(enc->codec_id);
807 av_codec_set_codec_descriptor(enc, desc);
810 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
814 static int has_decode_delay_been_guessed(AVStream *st)
816 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
817 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
819 #if CONFIG_H264_DECODER
820 if(st->codec->has_b_frames &&
821 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
824 if(st->codec->has_b_frames<3)
825 return st->nb_decoded_frames >= 7;
826 else if(st->codec->has_b_frames<4)
827 return st->nb_decoded_frames >= 18;
829 return st->nb_decoded_frames >= 20;
832 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
836 if (pktl == s->parse_queue_end)
837 return s->packet_buffer;
841 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
843 if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
844 st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
847 // reference time stamp should be 60 s before first time stamp
848 int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
849 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
850 int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
851 (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
852 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
854 AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
856 if (!first_program) {
857 int default_stream_index = av_find_default_stream_index(s);
858 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
859 for (i=0; i<s->nb_streams; i++) {
860 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
861 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
865 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
866 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
870 AVProgram *program = first_program;
872 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
873 pts_wrap_reference = program->pts_wrap_reference;
874 pts_wrap_behavior = program->pts_wrap_behavior;
877 program = av_find_program_from_stream(s, program, stream_index);
880 // update every program with differing pts_wrap_reference
881 program = first_program;
883 if (program->pts_wrap_reference != pts_wrap_reference) {
884 for (i=0; i<program->nb_stream_indexes; i++) {
885 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
886 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
889 program->pts_wrap_reference = pts_wrap_reference;
890 program->pts_wrap_behavior = pts_wrap_behavior;
892 program = av_find_program_from_stream(s, program, stream_index);
900 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
901 int64_t dts, int64_t pts, AVPacket *pkt)
903 AVStream *st= s->streams[stream_index];
904 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
905 int64_t pts_buffer[MAX_REORDER_DELAY+1];
909 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
912 delay = st->codec->has_b_frames;
913 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
915 shift = st->first_dts - RELATIVE_TS_BASE;
917 for (i=0; i<MAX_REORDER_DELAY+1; i++)
918 pts_buffer[i] = AV_NOPTS_VALUE;
920 if (is_relative(pts))
923 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
924 if(pktl->pkt.stream_index != stream_index)
926 if(is_relative(pktl->pkt.pts))
927 pktl->pkt.pts += shift;
929 if(is_relative(pktl->pkt.dts))
930 pktl->pkt.dts += shift;
932 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
933 st->start_time= pktl->pkt.pts;
935 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
936 pts_buffer[0]= pktl->pkt.pts;
937 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
938 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
939 if(pktl->pkt.dts == AV_NOPTS_VALUE)
940 pktl->pkt.dts= pts_buffer[0];
944 if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
945 // correct first time stamps to negative values
946 st->first_dts = wrap_timestamp(st, st->first_dts);
947 st->cur_dts = wrap_timestamp(st, st->cur_dts);
948 pkt->dts = wrap_timestamp(st, pkt->dts);
949 pkt->pts = wrap_timestamp(st, pkt->pts);
950 pts = wrap_timestamp(st, pts);
953 if (st->start_time == AV_NOPTS_VALUE)
954 st->start_time = pts;
957 static void update_initial_durations(AVFormatContext *s, AVStream *st,
958 int stream_index, int duration)
960 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
961 int64_t cur_dts= RELATIVE_TS_BASE;
963 if(st->first_dts != AV_NOPTS_VALUE){
964 cur_dts= st->first_dts;
965 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
966 if(pktl->pkt.stream_index == stream_index){
967 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
972 if(pktl && pktl->pkt.dts != st->first_dts) {
973 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));
977 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
980 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
981 st->first_dts = cur_dts;
982 }else if(st->cur_dts != RELATIVE_TS_BASE)
985 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
986 if(pktl->pkt.stream_index != stream_index)
988 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
989 && !pktl->pkt.duration){
990 pktl->pkt.dts= cur_dts;
991 if(!st->codec->has_b_frames)
992 pktl->pkt.pts= cur_dts;
993 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
994 pktl->pkt.duration = duration;
997 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1000 st->cur_dts= cur_dts;
1003 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1004 AVCodecParserContext *pc, AVPacket *pkt)
1006 int num, den, presentation_delayed, delay, i;
1009 if (s->flags & AVFMT_FLAG_NOFILLIN)
1012 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1013 pkt->dts= AV_NOPTS_VALUE;
1015 if (st->codec->codec_id != AV_CODEC_ID_H264 && pc && pc->pict_type == AV_PICTURE_TYPE_B)
1016 //FIXME Set low_delay = 0 when has_b_frames = 1
1017 st->codec->has_b_frames = 1;
1019 /* do we have a video B-frame ? */
1020 delay= st->codec->has_b_frames;
1021 presentation_delayed = 0;
1023 /* XXX: need has_b_frame, but cannot get it if the codec is
1026 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1027 presentation_delayed = 1;
1029 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1030 st->pts_wrap_bits < 63 &&
1031 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1032 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1033 pkt->dts -= 1LL<<st->pts_wrap_bits;
1035 pkt->pts += 1LL<<st->pts_wrap_bits;
1038 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1039 // we take the conservative approach and discard both
1040 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1041 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1042 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1043 if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1044 pkt->dts= AV_NOPTS_VALUE;
1047 if (pkt->duration == 0) {
1048 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1050 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1053 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1054 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1056 /* correct timestamps with byte offset if demuxers only have timestamps
1057 on packet boundaries */
1058 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1059 /* this will estimate bitrate based on this frame's duration and size */
1060 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1061 if(pkt->pts != AV_NOPTS_VALUE)
1063 if(pkt->dts != AV_NOPTS_VALUE)
1067 if (pc && pc->dts_sync_point >= 0) {
1068 // we have synchronization info from the parser
1069 int64_t den = st->codec->time_base.den * (int64_t) st->time_base.num;
1071 int64_t num = st->codec->time_base.num * (int64_t) st->time_base.den;
1072 if (pkt->dts != AV_NOPTS_VALUE) {
1073 // got DTS from the stream, update reference timestamp
1074 st->reference_dts = pkt->dts - pc->dts_ref_dts_delta * num / den;
1075 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1076 } else if (st->reference_dts != AV_NOPTS_VALUE) {
1077 // compute DTS based on reference timestamp
1078 pkt->dts = st->reference_dts + pc->dts_ref_dts_delta * num / den;
1079 pkt->pts = pkt->dts + pc->pts_dts_delta * num / den;
1081 if (pc->dts_sync_point > 0)
1082 st->reference_dts = pkt->dts; // new reference
1086 /* This may be redundant, but it should not hurt. */
1087 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1088 presentation_delayed = 1;
1090 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1091 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1092 /* interpolate PTS and DTS if they are not present */
1093 //We skip H264 currently because delay and has_b_frames are not reliably set
1094 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1095 if (presentation_delayed) {
1096 /* DTS = decompression timestamp */
1097 /* PTS = presentation timestamp */
1098 if (pkt->dts == AV_NOPTS_VALUE)
1099 pkt->dts = st->last_IP_pts;
1100 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1101 if (pkt->dts == AV_NOPTS_VALUE)
1102 pkt->dts = st->cur_dts;
1104 /* this is tricky: the dts must be incremented by the duration
1105 of the frame we are displaying, i.e. the last I- or P-frame */
1106 if (st->last_IP_duration == 0)
1107 st->last_IP_duration = pkt->duration;
1108 if(pkt->dts != AV_NOPTS_VALUE)
1109 st->cur_dts = pkt->dts + st->last_IP_duration;
1110 st->last_IP_duration = pkt->duration;
1111 st->last_IP_pts= pkt->pts;
1112 /* cannot compute PTS if not present (we can compute it only
1113 by knowing the future */
1114 } else if (pkt->pts != AV_NOPTS_VALUE ||
1115 pkt->dts != AV_NOPTS_VALUE ||
1117 int duration = pkt->duration;
1119 /* presentation is not delayed : PTS and DTS are the same */
1120 if (pkt->pts == AV_NOPTS_VALUE)
1121 pkt->pts = pkt->dts;
1122 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1124 if (pkt->pts == AV_NOPTS_VALUE)
1125 pkt->pts = st->cur_dts;
1126 pkt->dts = pkt->pts;
1127 if (pkt->pts != AV_NOPTS_VALUE)
1128 st->cur_dts = pkt->pts + duration;
1132 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1133 st->pts_buffer[0]= pkt->pts;
1134 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1135 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1136 if(pkt->dts == AV_NOPTS_VALUE)
1137 pkt->dts= st->pts_buffer[0];
1139 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1140 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1142 if(pkt->dts > st->cur_dts)
1143 st->cur_dts = pkt->dts;
1145 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1146 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1149 if (is_intra_only(st->codec))
1150 pkt->flags |= AV_PKT_FLAG_KEY;
1152 pkt->convergence_duration = pc->convergence_duration;
1155 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1158 AVPacketList *pktl = *pkt_buf;
1159 *pkt_buf = pktl->next;
1160 av_free_packet(&pktl->pkt);
1163 *pkt_buf_end = NULL;
1167 * Parse a packet, add all split parts to parse_queue
1169 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1171 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1173 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1174 AVStream *st = s->streams[stream_index];
1175 uint8_t *data = pkt ? pkt->data : NULL;
1176 int size = pkt ? pkt->size : 0;
1177 int ret = 0, got_output = 0;
1180 av_init_packet(&flush_pkt);
1183 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1184 // preserve 0-size sync packets
1185 compute_pkt_fields(s, st, st->parser, pkt);
1188 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1191 av_init_packet(&out_pkt);
1192 len = av_parser_parse2(st->parser, st->codec,
1193 &out_pkt.data, &out_pkt.size, data, size,
1194 pkt->pts, pkt->dts, pkt->pos);
1196 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1198 /* increment read pointer */
1202 got_output = !!out_pkt.size;
1207 if (pkt->side_data) {
1208 out_pkt.side_data = pkt->side_data;
1209 out_pkt.side_data_elems = pkt->side_data_elems;
1210 pkt->side_data = NULL;
1211 pkt->side_data_elems = 0;
1214 /* set the duration */
1215 out_pkt.duration = 0;
1216 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1217 if (st->codec->sample_rate > 0) {
1218 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1219 (AVRational){ 1, st->codec->sample_rate },
1223 } else if (st->codec->time_base.num != 0 &&
1224 st->codec->time_base.den != 0) {
1225 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1226 st->codec->time_base,
1231 out_pkt.stream_index = st->index;
1232 out_pkt.pts = st->parser->pts;
1233 out_pkt.dts = st->parser->dts;
1234 out_pkt.pos = st->parser->pos;
1236 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1237 out_pkt.pos = st->parser->frame_offset;
1239 if (st->parser->key_frame == 1 ||
1240 (st->parser->key_frame == -1 &&
1241 st->parser->pict_type == AV_PICTURE_TYPE_I))
1242 out_pkt.flags |= AV_PKT_FLAG_KEY;
1244 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1245 out_pkt.flags |= AV_PKT_FLAG_KEY;
1247 compute_pkt_fields(s, st, st->parser, &out_pkt);
1249 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1250 out_pkt.buf = pkt->buf;
1252 #if FF_API_DESTRUCT_PACKET
1253 FF_DISABLE_DEPRECATION_WARNINGS
1254 out_pkt.destruct = pkt->destruct;
1255 pkt->destruct = NULL;
1256 FF_ENABLE_DEPRECATION_WARNINGS
1259 if ((ret = av_dup_packet(&out_pkt)) < 0)
1262 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1263 av_free_packet(&out_pkt);
1264 ret = AVERROR(ENOMEM);
1270 /* end of the stream => close and free the parser */
1271 if (pkt == &flush_pkt) {
1272 av_parser_close(st->parser);
1277 av_free_packet(pkt);
1281 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1282 AVPacketList **pkt_buffer_end,
1286 av_assert0(*pkt_buffer);
1289 *pkt_buffer = pktl->next;
1291 *pkt_buffer_end = NULL;
1296 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1298 int ret = 0, i, got_packet = 0;
1300 av_init_packet(pkt);
1302 while (!got_packet && !s->parse_queue) {
1306 /* read next packet */
1307 ret = ff_read_packet(s, &cur_pkt);
1309 if (ret == AVERROR(EAGAIN))
1311 /* flush the parsers */
1312 for(i = 0; i < s->nb_streams; i++) {
1314 if (st->parser && st->need_parsing)
1315 parse_packet(s, NULL, st->index);
1317 /* all remaining packets are now in parse_queue =>
1318 * really terminate parsing */
1322 st = s->streams[cur_pkt.stream_index];
1324 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1325 cur_pkt.dts != AV_NOPTS_VALUE &&
1326 cur_pkt.pts < cur_pkt.dts) {
1327 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1328 cur_pkt.stream_index,
1329 av_ts2str(cur_pkt.pts),
1330 av_ts2str(cur_pkt.dts),
1333 if (s->debug & FF_FDEBUG_TS)
1334 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1335 cur_pkt.stream_index,
1336 av_ts2str(cur_pkt.pts),
1337 av_ts2str(cur_pkt.dts),
1342 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1343 st->parser = av_parser_init(st->codec->codec_id);
1345 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1346 "%s, packets or times may be invalid.\n",
1347 avcodec_get_name(st->codec->codec_id));
1348 /* no parser available: just output the raw packets */
1349 st->need_parsing = AVSTREAM_PARSE_NONE;
1350 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1351 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1352 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1353 st->parser->flags |= PARSER_FLAG_ONCE;
1354 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1355 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1359 if (!st->need_parsing || !st->parser) {
1360 /* no parsing needed: we just output the packet as is */
1362 compute_pkt_fields(s, st, NULL, pkt);
1363 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1364 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1365 ff_reduce_index(s, st->index);
1366 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1369 } else if (st->discard < AVDISCARD_ALL) {
1370 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1374 av_free_packet(&cur_pkt);
1376 if (pkt->flags & AV_PKT_FLAG_KEY)
1377 st->skip_to_keyframe = 0;
1378 if (st->skip_to_keyframe) {
1379 av_free_packet(&cur_pkt);
1387 if (!got_packet && s->parse_queue)
1388 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1390 if(s->debug & FF_FDEBUG_TS)
1391 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1393 av_ts2str(pkt->pts),
1394 av_ts2str(pkt->dts),
1402 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1404 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1410 ret = s->packet_buffer ?
1411 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1412 read_frame_internal(s, pkt);
1419 AVPacketList *pktl = s->packet_buffer;
1422 AVPacket *next_pkt = &pktl->pkt;
1424 if (next_pkt->dts != AV_NOPTS_VALUE) {
1425 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1426 // last dts seen for this stream. if any of packets following
1427 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1428 int64_t last_dts = next_pkt->dts;
1429 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1430 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1431 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1432 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1433 next_pkt->pts = pktl->pkt.dts;
1435 if (last_dts != AV_NOPTS_VALUE) {
1436 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1437 last_dts = pktl->pkt.dts;
1442 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1443 // Fixing the last reference frame had none pts issue (For MXF etc).
1444 // We only do this when
1446 // 2. we are not able to resolve a pts value for current packet.
1447 // 3. the packets for this stream at the end of the files had valid dts.
1448 next_pkt->pts = last_dts + next_pkt->duration;
1450 pktl = s->packet_buffer;
1453 /* read packet from packet buffer, if there is data */
1454 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1455 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1456 ret = read_from_packet_buffer(&s->packet_buffer,
1457 &s->packet_buffer_end, pkt);
1462 ret = read_frame_internal(s, pkt);
1464 if (pktl && ret != AVERROR(EAGAIN)) {
1471 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1472 &s->packet_buffer_end)) < 0)
1473 return AVERROR(ENOMEM);
1478 st = s->streams[pkt->stream_index];
1479 if (st->skip_samples) {
1480 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1481 AV_WL32(p, st->skip_samples);
1482 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1483 st->skip_samples = 0;
1486 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1487 ff_reduce_index(s, st->index);
1488 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1491 if (is_relative(pkt->dts))
1492 pkt->dts -= RELATIVE_TS_BASE;
1493 if (is_relative(pkt->pts))
1494 pkt->pts -= RELATIVE_TS_BASE;
1499 /* XXX: suppress the packet queue */
1500 static void flush_packet_queue(AVFormatContext *s)
1502 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1503 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1504 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1506 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1509 /*******************************************************/
1512 int av_find_default_stream_index(AVFormatContext *s)
1514 int first_audio_index = -1;
1518 if (s->nb_streams <= 0)
1520 for(i = 0; i < s->nb_streams; i++) {
1522 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1523 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1526 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1527 first_audio_index = i;
1529 return first_audio_index >= 0 ? first_audio_index : 0;
1533 * Flush the frame reader.
1535 void ff_read_frame_flush(AVFormatContext *s)
1540 flush_packet_queue(s);
1542 /* for each stream, reset read state */
1543 for(i = 0; i < s->nb_streams; i++) {
1547 av_parser_close(st->parser);
1550 st->last_IP_pts = AV_NOPTS_VALUE;
1551 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1552 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1553 st->reference_dts = AV_NOPTS_VALUE;
1555 st->probe_packets = MAX_PROBE_PACKETS;
1557 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1558 st->pts_buffer[j]= AV_NOPTS_VALUE;
1562 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1566 for(i = 0; i < s->nb_streams; i++) {
1567 AVStream *st = s->streams[i];
1569 st->cur_dts = av_rescale(timestamp,
1570 st->time_base.den * (int64_t)ref_st->time_base.num,
1571 st->time_base.num * (int64_t)ref_st->time_base.den);
1575 void ff_reduce_index(AVFormatContext *s, int stream_index)
1577 AVStream *st= s->streams[stream_index];
1578 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1580 if((unsigned)st->nb_index_entries >= max_entries){
1582 for(i=0; 2*i<st->nb_index_entries; i++)
1583 st->index_entries[i]= st->index_entries[2*i];
1584 st->nb_index_entries= i;
1588 int ff_add_index_entry(AVIndexEntry **index_entries,
1589 int *nb_index_entries,
1590 unsigned int *index_entries_allocated_size,
1591 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1593 AVIndexEntry *entries, *ie;
1596 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1599 if(timestamp == AV_NOPTS_VALUE)
1600 return AVERROR(EINVAL);
1602 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1603 timestamp -= RELATIVE_TS_BASE;
1605 entries = av_fast_realloc(*index_entries,
1606 index_entries_allocated_size,
1607 (*nb_index_entries + 1) *
1608 sizeof(AVIndexEntry));
1612 *index_entries= entries;
1614 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1617 index= (*nb_index_entries)++;
1618 ie= &entries[index];
1619 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1621 ie= &entries[index];
1622 if(ie->timestamp != timestamp){
1623 if(ie->timestamp <= timestamp)
1625 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1626 (*nb_index_entries)++;
1627 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1628 distance= ie->min_distance;
1632 ie->timestamp = timestamp;
1633 ie->min_distance= distance;
1640 int av_add_index_entry(AVStream *st,
1641 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1643 timestamp = wrap_timestamp(st, timestamp);
1644 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1645 &st->index_entries_allocated_size, pos,
1646 timestamp, size, distance, flags);
1649 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1650 int64_t wanted_timestamp, int flags)
1658 //optimize appending index entries at the end
1659 if(b && entries[b-1].timestamp < wanted_timestamp)
1664 timestamp = entries[m].timestamp;
1665 if(timestamp >= wanted_timestamp)
1667 if(timestamp <= wanted_timestamp)
1670 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1672 if(!(flags & AVSEEK_FLAG_ANY)){
1673 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1674 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1683 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1686 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1687 wanted_timestamp, flags);
1690 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1691 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1693 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1694 if (stream_index >= 0)
1695 ts = wrap_timestamp(s->streams[stream_index], ts);
1699 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1701 AVInputFormat *avif= s->iformat;
1702 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1703 int64_t ts_min, ts_max, ts;
1708 if (stream_index < 0)
1711 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1714 ts_min= AV_NOPTS_VALUE;
1715 pos_limit= -1; //gcc falsely says it may be uninitialized
1717 st= s->streams[stream_index];
1718 if(st->index_entries){
1721 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()
1722 index= FFMAX(index, 0);
1723 e= &st->index_entries[index];
1725 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1727 ts_min= e->timestamp;
1728 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1729 pos_min, av_ts2str(ts_min));
1731 av_assert1(index==0);
1734 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1735 av_assert0(index < st->nb_index_entries);
1737 e= &st->index_entries[index];
1738 av_assert1(e->timestamp >= target_ts);
1740 ts_max= e->timestamp;
1741 pos_limit= pos_max - e->min_distance;
1742 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1743 pos_max, pos_limit, av_ts2str(ts_max));
1747 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1752 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1755 ff_read_frame_flush(s);
1756 ff_update_cur_dts(s, st, ts);
1761 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1762 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1765 int64_t limit, ts_max;
1766 int64_t filesize = avio_size(s->pb);
1767 int64_t pos_max = filesize - 1;
1770 pos_max = FFMAX(0, (pos_max) - step);
1771 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1773 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1774 if (ts_max == AV_NOPTS_VALUE)
1778 int64_t tmp_pos = pos_max + 1;
1779 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1780 if(tmp_ts == AV_NOPTS_VALUE)
1782 av_assert0(tmp_pos > pos_max);
1785 if(tmp_pos >= filesize)
1797 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1798 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1799 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1800 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1807 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1809 if(ts_min == AV_NOPTS_VALUE){
1810 pos_min = s->data_offset;
1811 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1812 if (ts_min == AV_NOPTS_VALUE)
1816 if(ts_min >= target_ts){
1821 if(ts_max == AV_NOPTS_VALUE){
1822 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1827 if(ts_max <= target_ts){
1832 if(ts_min > ts_max){
1834 }else if(ts_min == ts_max){
1839 while (pos_min < pos_limit) {
1840 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1841 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1842 assert(pos_limit <= pos_max);
1845 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1846 // interpolate position (better than dichotomy)
1847 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1848 + pos_min - approximate_keyframe_distance;
1849 }else if(no_change==1){
1850 // bisection, if interpolation failed to change min or max pos last time
1851 pos = (pos_min + pos_limit)>>1;
1853 /* linear search if bisection failed, can only happen if there
1854 are very few or no keyframes between min/max */
1859 else if(pos > pos_limit)
1863 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1868 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1869 pos_min, pos, pos_max,
1870 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1871 pos_limit, start_pos, no_change);
1872 if(ts == AV_NOPTS_VALUE){
1873 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1876 assert(ts != AV_NOPTS_VALUE);
1877 if (target_ts <= ts) {
1878 pos_limit = start_pos - 1;
1882 if (target_ts >= ts) {
1888 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1889 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1892 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1894 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1895 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1896 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1902 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1903 int64_t pos_min, pos_max;
1905 pos_min = s->data_offset;
1906 pos_max = avio_size(s->pb) - 1;
1908 if (pos < pos_min) pos= pos_min;
1909 else if(pos > pos_max) pos= pos_max;
1911 avio_seek(s->pb, pos, SEEK_SET);
1913 s->io_repositioned = 1;
1918 static int seek_frame_generic(AVFormatContext *s,
1919 int stream_index, int64_t timestamp, int flags)
1926 st = s->streams[stream_index];
1928 index = av_index_search_timestamp(st, timestamp, flags);
1930 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1933 if(index < 0 || index==st->nb_index_entries-1){
1937 if(st->nb_index_entries){
1938 av_assert0(st->index_entries);
1939 ie= &st->index_entries[st->nb_index_entries-1];
1940 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1942 ff_update_cur_dts(s, st, ie->timestamp);
1944 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1950 read_status = av_read_frame(s, &pkt);
1951 } while (read_status == AVERROR(EAGAIN));
1952 if (read_status < 0)
1954 av_free_packet(&pkt);
1955 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1956 if(pkt.flags & AV_PKT_FLAG_KEY)
1958 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1959 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);
1964 index = av_index_search_timestamp(st, timestamp, flags);
1969 ff_read_frame_flush(s);
1970 if (s->iformat->read_seek){
1971 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
1974 ie = &st->index_entries[index];
1975 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1977 ff_update_cur_dts(s, st, ie->timestamp);
1982 static int seek_frame_internal(AVFormatContext *s, int stream_index,
1983 int64_t timestamp, int flags)
1988 if (flags & AVSEEK_FLAG_BYTE) {
1989 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
1991 ff_read_frame_flush(s);
1992 return seek_frame_byte(s, stream_index, timestamp, flags);
1995 if(stream_index < 0){
1996 stream_index= av_find_default_stream_index(s);
1997 if(stream_index < 0)
2000 st= s->streams[stream_index];
2001 /* timestamp for default must be expressed in AV_TIME_BASE units */
2002 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2005 /* first, we try the format specific seek */
2006 if (s->iformat->read_seek) {
2007 ff_read_frame_flush(s);
2008 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2015 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2016 ff_read_frame_flush(s);
2017 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2018 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2019 ff_read_frame_flush(s);
2020 return seek_frame_generic(s, stream_index, timestamp, flags);
2026 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2030 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2031 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2032 if ((flags & AVSEEK_FLAG_BACKWARD))
2036 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2037 flags & ~AVSEEK_FLAG_BACKWARD);
2040 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2043 ret = avformat_queue_attached_pictures(s);
2048 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2050 if(min_ts > ts || max_ts < ts)
2052 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2053 return AVERROR(EINVAL);
2056 flags |= AVSEEK_FLAG_ANY;
2057 flags &= ~AVSEEK_FLAG_BACKWARD;
2059 if (s->iformat->read_seek2) {
2061 ff_read_frame_flush(s);
2063 if (stream_index == -1 && s->nb_streams == 1) {
2064 AVRational time_base = s->streams[0]->time_base;
2065 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2066 min_ts = av_rescale_rnd(min_ts, time_base.den,
2067 time_base.num * (int64_t)AV_TIME_BASE,
2068 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2069 max_ts = av_rescale_rnd(max_ts, time_base.den,
2070 time_base.num * (int64_t)AV_TIME_BASE,
2071 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2074 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2077 ret = avformat_queue_attached_pictures(s);
2081 if(s->iformat->read_timestamp){
2082 //try to seek via read_timestamp()
2085 // Fall back on old API if new is not implemented but old is.
2086 // Note the old API has somewhat different semantics.
2087 if (s->iformat->read_seek || 1) {
2088 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2089 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2090 if (ret<0 && ts != min_ts && max_ts != ts) {
2091 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2093 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2098 // try some generic seek like seek_frame_generic() but with new ts semantics
2099 return -1; //unreachable
2102 /*******************************************************/
2105 * Return TRUE if the stream has accurate duration in any stream.
2107 * @return TRUE if the stream has accurate duration for at least one component.
2109 static int has_duration(AVFormatContext *ic)
2114 for(i = 0;i < ic->nb_streams; i++) {
2115 st = ic->streams[i];
2116 if (st->duration != AV_NOPTS_VALUE)
2119 if (ic->duration != AV_NOPTS_VALUE)
2125 * Estimate the stream timings from the one of each components.
2127 * Also computes the global bitrate if possible.
2129 static void update_stream_timings(AVFormatContext *ic)
2131 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2132 int64_t duration, duration1, filesize;
2137 start_time = INT64_MAX;
2138 start_time_text = INT64_MAX;
2139 end_time = INT64_MIN;
2140 duration = INT64_MIN;
2141 for(i = 0;i < ic->nb_streams; i++) {
2142 st = ic->streams[i];
2143 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2144 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2145 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2146 if (start_time1 < start_time_text)
2147 start_time_text = start_time1;
2149 start_time = FFMIN(start_time, start_time1);
2150 end_time1 = AV_NOPTS_VALUE;
2151 if (st->duration != AV_NOPTS_VALUE) {
2152 end_time1 = start_time1
2153 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2154 end_time = FFMAX(end_time, end_time1);
2156 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2157 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2158 p->start_time = start_time1;
2159 if(p->end_time < end_time1)
2160 p->end_time = end_time1;
2163 if (st->duration != AV_NOPTS_VALUE) {
2164 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2165 duration = FFMAX(duration, duration1);
2168 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2169 start_time = start_time_text;
2170 else if(start_time > start_time_text)
2171 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2173 if (start_time != INT64_MAX) {
2174 ic->start_time = start_time;
2175 if (end_time != INT64_MIN) {
2176 if (ic->nb_programs) {
2177 for (i=0; i<ic->nb_programs; i++) {
2178 p = ic->programs[i];
2179 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2180 duration = FFMAX(duration, p->end_time - p->start_time);
2183 duration = FFMAX(duration, end_time - start_time);
2186 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2187 ic->duration = duration;
2189 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2190 /* compute the bitrate */
2191 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2192 (double)ic->duration;
2193 if (bitrate >= 0 && bitrate <= INT_MAX)
2194 ic->bit_rate = bitrate;
2198 static void fill_all_stream_timings(AVFormatContext *ic)
2203 update_stream_timings(ic);
2204 for(i = 0;i < ic->nb_streams; i++) {
2205 st = ic->streams[i];
2206 if (st->start_time == AV_NOPTS_VALUE) {
2207 if(ic->start_time != AV_NOPTS_VALUE)
2208 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2209 if(ic->duration != AV_NOPTS_VALUE)
2210 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2215 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2217 int64_t filesize, duration;
2218 int i, show_warning = 0;
2221 /* if bit_rate is already set, we believe it */
2222 if (ic->bit_rate <= 0) {
2223 int64_t bit_rate = 0;
2224 for(i=0;i<ic->nb_streams;i++) {
2225 st = ic->streams[i];
2226 if (st->codec->bit_rate > 0) {
2227 bit_rate += st->codec->bit_rate;
2230 if (bit_rate <= INT_MAX)
2231 ic->bit_rate = bit_rate;
2234 /* if duration is already set, we believe it */
2235 if (ic->duration == AV_NOPTS_VALUE &&
2236 ic->bit_rate != 0) {
2237 filesize = ic->pb ? avio_size(ic->pb) : 0;
2239 for(i = 0; i < ic->nb_streams; i++) {
2240 st = ic->streams[i];
2241 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2242 && st->duration == AV_NOPTS_VALUE) {
2243 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2244 st->duration = duration;
2251 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2254 #define DURATION_MAX_READ_SIZE 250000LL
2255 #define DURATION_MAX_RETRY 4
2257 /* only usable for MPEG-PS streams */
2258 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2260 AVPacket pkt1, *pkt = &pkt1;
2262 int read_size, i, ret;
2264 int64_t filesize, offset, duration;
2267 /* flush packet queue */
2268 flush_packet_queue(ic);
2270 for (i=0; i<ic->nb_streams; i++) {
2271 st = ic->streams[i];
2272 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2273 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2276 av_parser_close(st->parser);
2281 /* estimate the end time (duration) */
2282 /* XXX: may need to support wrapping */
2283 filesize = ic->pb ? avio_size(ic->pb) : 0;
2284 end_time = AV_NOPTS_VALUE;
2286 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2290 avio_seek(ic->pb, offset, SEEK_SET);
2293 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2297 ret = ff_read_packet(ic, pkt);
2298 } while(ret == AVERROR(EAGAIN));
2301 read_size += pkt->size;
2302 st = ic->streams[pkt->stream_index];
2303 if (pkt->pts != AV_NOPTS_VALUE &&
2304 (st->start_time != AV_NOPTS_VALUE ||
2305 st->first_dts != AV_NOPTS_VALUE)) {
2306 duration = end_time = pkt->pts;
2307 if (st->start_time != AV_NOPTS_VALUE)
2308 duration -= st->start_time;
2310 duration -= st->first_dts;
2312 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2313 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2314 st->duration = duration;
2315 st->info->last_duration = duration;
2318 av_free_packet(pkt);
2320 }while( end_time==AV_NOPTS_VALUE
2321 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2322 && ++retry <= DURATION_MAX_RETRY);
2324 fill_all_stream_timings(ic);
2326 avio_seek(ic->pb, old_offset, SEEK_SET);
2327 for (i=0; i<ic->nb_streams; i++) {
2329 st->cur_dts= st->first_dts;
2330 st->last_IP_pts = AV_NOPTS_VALUE;
2331 st->reference_dts = AV_NOPTS_VALUE;
2335 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2339 /* get the file size, if possible */
2340 if (ic->iformat->flags & AVFMT_NOFILE) {
2343 file_size = avio_size(ic->pb);
2344 file_size = FFMAX(0, file_size);
2347 if ((!strcmp(ic->iformat->name, "mpeg") ||
2348 !strcmp(ic->iformat->name, "mpegts")) &&
2349 file_size && ic->pb->seekable) {
2350 /* get accurate estimate from the PTSes */
2351 estimate_timings_from_pts(ic, old_offset);
2352 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2353 } else if (has_duration(ic)) {
2354 /* at least one component has timings - we use them for all
2356 fill_all_stream_timings(ic);
2357 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2359 /* less precise: use bitrate info */
2360 estimate_timings_from_bit_rate(ic);
2361 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2363 update_stream_timings(ic);
2367 AVStream av_unused *st;
2368 for(i = 0;i < ic->nb_streams; i++) {
2369 st = ic->streams[i];
2370 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2371 (double) st->start_time / AV_TIME_BASE,
2372 (double) st->duration / AV_TIME_BASE);
2374 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2375 (double) ic->start_time / AV_TIME_BASE,
2376 (double) ic->duration / AV_TIME_BASE,
2377 ic->bit_rate / 1000);
2381 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2383 AVCodecContext *avctx = st->codec;
2385 #define FAIL(errmsg) do { \
2387 *errmsg_ptr = errmsg; \
2391 switch (avctx->codec_type) {
2392 case AVMEDIA_TYPE_AUDIO:
2393 if (!avctx->frame_size && determinable_frame_size(avctx))
2394 FAIL("unspecified frame size");
2395 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2396 FAIL("unspecified sample format");
2397 if (!avctx->sample_rate)
2398 FAIL("unspecified sample rate");
2399 if (!avctx->channels)
2400 FAIL("unspecified number of channels");
2401 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2402 FAIL("no decodable DTS frames");
2404 case AVMEDIA_TYPE_VIDEO:
2406 FAIL("unspecified size");
2407 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2408 FAIL("unspecified pixel format");
2409 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2410 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2411 FAIL("no frame in rv30/40 and no sar");
2413 case AVMEDIA_TYPE_SUBTITLE:
2414 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2415 FAIL("unspecified size");
2417 case AVMEDIA_TYPE_DATA:
2418 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2421 if (avctx->codec_id == AV_CODEC_ID_NONE)
2422 FAIL("unknown codec");
2426 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2427 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2429 const AVCodec *codec;
2430 int got_picture = 1, ret = 0;
2431 AVFrame *frame = avcodec_alloc_frame();
2432 AVSubtitle subtitle;
2433 AVPacket pkt = *avpkt;
2436 return AVERROR(ENOMEM);
2438 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2439 AVDictionary *thread_opt = NULL;
2441 codec = st->codec->codec ? st->codec->codec :
2442 avcodec_find_decoder(st->codec->codec_id);
2445 st->info->found_decoder = -1;
2450 /* force thread count to 1 since the h264 decoder will not extract SPS
2451 * and PPS to extradata during multi-threaded decoding */
2452 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2453 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2455 av_dict_free(&thread_opt);
2457 st->info->found_decoder = -1;
2460 st->info->found_decoder = 1;
2461 } else if (!st->info->found_decoder)
2462 st->info->found_decoder = 1;
2464 if (st->info->found_decoder < 0) {
2469 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2471 (!has_codec_parameters(st, NULL) ||
2472 !has_decode_delay_been_guessed(st) ||
2473 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2475 avcodec_get_frame_defaults(frame);
2476 switch(st->codec->codec_type) {
2477 case AVMEDIA_TYPE_VIDEO:
2478 ret = avcodec_decode_video2(st->codec, frame,
2479 &got_picture, &pkt);
2481 case AVMEDIA_TYPE_AUDIO:
2482 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2484 case AVMEDIA_TYPE_SUBTITLE:
2485 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2486 &got_picture, &pkt);
2494 st->nb_decoded_frames++;
2501 if(!pkt.data && !got_picture)
2505 avcodec_free_frame(&frame);
2509 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2511 while (tags->id != AV_CODEC_ID_NONE) {
2519 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2522 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2523 if(tag == tags[i].tag)
2526 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2527 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2530 return AV_CODEC_ID_NONE;
2533 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2537 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2538 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2539 default: return AV_CODEC_ID_NONE;
2544 if (sflags & (1 << (bps - 1))) {
2546 case 1: return AV_CODEC_ID_PCM_S8;
2547 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2548 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2549 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2550 default: return AV_CODEC_ID_NONE;
2554 case 1: return AV_CODEC_ID_PCM_U8;
2555 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2556 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2557 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2558 default: return AV_CODEC_ID_NONE;
2564 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2567 if (!av_codec_get_tag2(tags, id, &tag))
2572 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2576 for(i=0; tags && tags[i]; i++){
2577 const AVCodecTag *codec_tags = tags[i];
2578 while (codec_tags->id != AV_CODEC_ID_NONE) {
2579 if (codec_tags->id == id) {
2580 *tag = codec_tags->tag;
2589 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2592 for(i=0; tags && tags[i]; i++){
2593 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2594 if(id!=AV_CODEC_ID_NONE) return id;
2596 return AV_CODEC_ID_NONE;
2599 static void compute_chapters_end(AVFormatContext *s)
2602 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2604 for (i = 0; i < s->nb_chapters; i++)
2605 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2606 AVChapter *ch = s->chapters[i];
2607 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2610 for (j = 0; j < s->nb_chapters; j++) {
2611 AVChapter *ch1 = s->chapters[j];
2612 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2613 if (j != i && next_start > ch->start && next_start < end)
2616 ch->end = (end == INT64_MAX) ? ch->start : end;
2620 static int get_std_framerate(int i){
2621 if(i<60*12) return (i+1)*1001;
2622 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2626 * Is the time base unreliable.
2627 * This is a heuristic to balance between quick acceptance of the values in
2628 * the headers vs. some extra checks.
2629 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2630 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2631 * And there are "variable" fps files this needs to detect as well.
2633 static int tb_unreliable(AVCodecContext *c){
2634 if( c->time_base.den >= 101L*c->time_base.num
2635 || c->time_base.den < 5L*c->time_base.num
2636 /* || c->codec_tag == AV_RL32("DIVX")
2637 || c->codec_tag == AV_RL32("XVID")*/
2638 || c->codec_tag == AV_RL32("mp4v")
2639 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2640 || c->codec_id == AV_CODEC_ID_H264
2646 #if FF_API_FORMAT_PARAMETERS
2647 int av_find_stream_info(AVFormatContext *ic)
2649 return avformat_find_stream_info(ic, NULL);
2653 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2655 int i, count, ret = 0, j;
2658 AVPacket pkt1, *pkt;
2659 int64_t old_offset = avio_tell(ic->pb);
2660 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2661 int flush_codecs = ic->probesize > 0;
2664 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2666 for(i=0;i<ic->nb_streams;i++) {
2667 const AVCodec *codec;
2668 AVDictionary *thread_opt = NULL;
2669 st = ic->streams[i];
2671 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2672 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2673 /* if(!st->time_base.num)
2675 if(!st->codec->time_base.num)
2676 st->codec->time_base= st->time_base;
2678 //only for the split stuff
2679 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2680 st->parser = av_parser_init(st->codec->codec_id);
2682 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2683 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2684 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2685 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2687 } else if (st->need_parsing) {
2688 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2689 "%s, packets or times may be invalid.\n",
2690 avcodec_get_name(st->codec->codec_id));
2693 codec = st->codec->codec ? st->codec->codec :
2694 avcodec_find_decoder(st->codec->codec_id);
2696 /* force thread count to 1 since the h264 decoder will not extract SPS
2697 * and PPS to extradata during multi-threaded decoding */
2698 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2700 /* Ensure that subtitle_header is properly set. */
2701 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2702 && codec && !st->codec->codec)
2703 avcodec_open2(st->codec, codec, options ? &options[i]
2706 //try to just open decoders, in case this is enough to get parameters
2707 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2708 if (codec && !st->codec->codec)
2709 avcodec_open2(st->codec, codec, options ? &options[i]
2713 av_dict_free(&thread_opt);
2716 for (i=0; i<ic->nb_streams; i++) {
2717 #if FF_API_R_FRAME_RATE
2718 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2720 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2721 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2727 if (ff_check_interrupt(&ic->interrupt_callback)){
2729 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2733 /* check if one codec still needs to be handled */
2734 for(i=0;i<ic->nb_streams;i++) {
2735 int fps_analyze_framecount = 20;
2737 st = ic->streams[i];
2738 if (!has_codec_parameters(st, NULL))
2740 /* if the timebase is coarse (like the usual millisecond precision
2741 of mkv), we need to analyze more frames to reliably arrive at
2743 if (av_q2d(st->time_base) > 0.0005)
2744 fps_analyze_framecount *= 2;
2745 if (ic->fps_probe_size >= 0)
2746 fps_analyze_framecount = ic->fps_probe_size;
2747 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2748 fps_analyze_framecount = 0;
2749 /* variable fps and no guess at the real fps */
2750 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2751 && st->info->duration_count < fps_analyze_framecount
2752 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2754 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2756 if (st->first_dts == AV_NOPTS_VALUE &&
2757 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2758 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2761 if (i == ic->nb_streams) {
2762 /* NOTE: if the format has no header, then we need to read
2763 some packets to get most of the streams, so we cannot
2765 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2766 /* if we found the info for all the codecs, we can stop */
2768 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2773 /* we did not get all the codec info, but we read too much data */
2774 if (read_size >= ic->probesize) {
2776 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2777 for (i = 0; i < ic->nb_streams; i++)
2778 if (!ic->streams[i]->r_frame_rate.num &&
2779 ic->streams[i]->info->duration_count <= 1)
2780 av_log(ic, AV_LOG_WARNING,
2781 "Stream #%d: not enough frames to estimate rate; "
2782 "consider increasing probesize\n", i);
2786 /* NOTE: a new stream can be added there if no header in file
2787 (AVFMTCTX_NOHEADER) */
2788 ret = read_frame_internal(ic, &pkt1);
2789 if (ret == AVERROR(EAGAIN))
2797 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2798 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2800 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2801 &ic->packet_buffer_end);
2803 ret = AVERROR(ENOMEM);
2804 goto find_stream_info_err;
2806 if ((ret = av_dup_packet(pkt)) < 0)
2807 goto find_stream_info_err;
2810 read_size += pkt->size;
2812 st = ic->streams[pkt->stream_index];
2813 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2814 /* check for non-increasing dts */
2815 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2816 st->info->fps_last_dts >= pkt->dts) {
2817 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2818 "packet %d with DTS %"PRId64", packet %d with DTS "
2819 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2820 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2821 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2823 /* check for a discontinuity in dts - if the difference in dts
2824 * is more than 1000 times the average packet duration in the sequence,
2825 * we treat it as a discontinuity */
2826 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2827 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2828 (pkt->dts - st->info->fps_last_dts) / 1000 >
2829 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2830 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2831 "packet %d with DTS %"PRId64", packet %d with DTS "
2832 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2833 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2834 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2837 /* update stored dts values */
2838 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
2839 st->info->fps_first_dts = pkt->dts;
2840 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
2842 st->info->fps_last_dts = pkt->dts;
2843 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
2845 if (st->codec_info_nb_frames>1) {
2847 if (st->time_base.den > 0)
2848 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2849 if (st->avg_frame_rate.num > 0)
2850 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
2853 && st->codec_info_nb_frames>30
2854 && st->info->fps_first_dts != AV_NOPTS_VALUE
2855 && st->info->fps_last_dts != AV_NOPTS_VALUE)
2856 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
2858 if (t >= ic->max_analyze_duration) {
2859 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
2862 if (pkt->duration) {
2863 st->info->codec_info_duration += pkt->duration;
2864 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
2867 #if FF_API_R_FRAME_RATE
2869 int64_t last = st->info->last_dts;
2871 if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
2872 && pkt->dts - (uint64_t)last < INT64_MAX){
2873 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2874 int64_t duration= pkt->dts - last;
2876 if (!st->info->duration_error)
2877 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2878 if (!st->info->duration_error)
2879 return AVERROR(ENOMEM);
2881 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2882 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2883 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2884 int framerate= get_std_framerate(i);
2885 double sdts= dts*framerate/(1001*12);
2887 int64_t ticks= llrint(sdts+j*0.5);
2888 double error= sdts - ticks + j*0.5;
2889 st->info->duration_error[j][0][i] += error;
2890 st->info->duration_error[j][1][i] += error*error;
2893 st->info->duration_count++;
2894 // ignore the first 4 values, they might have some random jitter
2895 if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
2896 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2898 if (pkt->dts != AV_NOPTS_VALUE)
2899 st->info->last_dts = pkt->dts;
2902 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2903 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2904 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2905 st->codec->extradata_size= i;
2906 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2907 if (!st->codec->extradata)
2908 return AVERROR(ENOMEM);
2909 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2910 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2914 /* if still no information, we try to open the codec and to
2915 decompress the frame. We try to avoid that in most cases as
2916 it takes longer and uses more memory. For MPEG-4, we need to
2917 decompress for QuickTime.
2919 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2920 least one frame of codec data, this makes sure the codec initializes
2921 the channel configuration and does not only trust the values from the container.
2923 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2925 st->codec_info_nb_frames++;
2930 AVPacket empty_pkt = { 0 };
2932 av_init_packet(&empty_pkt);
2934 for(i=0;i<ic->nb_streams;i++) {
2936 st = ic->streams[i];
2938 /* flush the decoders */
2939 if (st->info->found_decoder == 1) {
2941 err = try_decode_frame(st, &empty_pkt,
2942 (options && i < orig_nb_streams) ?
2943 &options[i] : NULL);
2944 } while (err > 0 && !has_codec_parameters(st, NULL));
2947 av_log(ic, AV_LOG_INFO,
2948 "decoding for stream %d failed\n", st->index);
2954 // close codecs which were opened in try_decode_frame()
2955 for(i=0;i<ic->nb_streams;i++) {
2956 st = ic->streams[i];
2957 avcodec_close(st->codec);
2959 for(i=0;i<ic->nb_streams;i++) {
2960 st = ic->streams[i];
2961 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2962 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2963 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2964 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2965 st->codec->codec_tag= tag;
2968 /* estimate average framerate if not set by demuxer */
2969 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
2971 double best_error = 0.01;
2973 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
2974 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den)
2976 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2977 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
2978 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
2980 /* round guessed framerate to a "standard" framerate if it's
2981 * within 1% of the original estimate*/
2982 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
2983 AVRational std_fps = { get_std_framerate(j), 12*1001 };
2984 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
2986 if (error < best_error) {
2988 best_fps = std_fps.num;
2992 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2993 best_fps, 12*1001, INT_MAX);
2996 // the check for tb_unreliable() is not completely correct, since this is not about handling
2997 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2998 // ipmovie.c produces.
2999 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)
3000 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);
3001 if (st->info->duration_count>1 && !st->r_frame_rate.num
3002 && tb_unreliable(st->codec)) {
3004 double best_error= 0.01;
3006 for (j=0; j<MAX_STD_TIMEBASES; j++) {
3009 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3011 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
3014 int n= st->info->duration_count;
3015 double a= st->info->duration_error[k][0][j] / n;
3016 double error= st->info->duration_error[k][1][j]/n - a*a;
3018 if(error < best_error && best_error> 0.000000001){
3020 num = get_std_framerate(j);
3023 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3026 // do not increase frame rate by more than 1 % in order to match a standard rate.
3027 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
3028 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3031 if (!st->r_frame_rate.num){
3032 if( st->codec->time_base.den * (int64_t)st->time_base.num
3033 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3034 st->r_frame_rate.num = st->codec->time_base.den;
3035 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3037 st->r_frame_rate.num = st->time_base.den;
3038 st->r_frame_rate.den = st->time_base.num;
3041 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3042 if(!st->codec->bits_per_coded_sample)
3043 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3044 // set stream disposition based on audio service type
3045 switch (st->codec->audio_service_type) {
3046 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3047 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3048 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3049 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3050 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3051 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3052 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3053 st->disposition = AV_DISPOSITION_COMMENT; break;
3054 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3055 st->disposition = AV_DISPOSITION_KARAOKE; break;
3061 estimate_timings(ic, old_offset);
3063 if (ret >= 0 && ic->nb_streams)
3064 ret = -1; /* we could not have all the codec parameters before EOF */
3065 for(i=0;i<ic->nb_streams;i++) {
3067 st = ic->streams[i];
3068 if (!has_codec_parameters(st, &errmsg)) {
3070 avcodec_string(buf, sizeof(buf), st->codec, 0);
3071 av_log(ic, AV_LOG_WARNING,
3072 "Could not find codec parameters for stream %d (%s): %s\n"
3073 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3080 compute_chapters_end(ic);
3082 find_stream_info_err:
3083 for (i=0; i < ic->nb_streams; i++) {
3084 st = ic->streams[i];
3085 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3086 ic->streams[i]->codec->thread_count = 0;
3088 av_freep(&st->info->duration_error);
3089 av_freep(&ic->streams[i]->info);
3092 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
3096 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3100 for (i = 0; i < ic->nb_programs; i++) {
3101 if (ic->programs[i] == last) {
3105 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3106 if (ic->programs[i]->stream_index[j] == s)
3107 return ic->programs[i];
3113 int av_find_best_stream(AVFormatContext *ic,
3114 enum AVMediaType type,
3115 int wanted_stream_nb,
3117 AVCodec **decoder_ret,
3120 int i, nb_streams = ic->nb_streams;
3121 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3122 unsigned *program = NULL;
3123 AVCodec *decoder = NULL, *best_decoder = NULL;
3125 if (related_stream >= 0 && wanted_stream_nb < 0) {
3126 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3128 program = p->stream_index;
3129 nb_streams = p->nb_stream_indexes;
3132 for (i = 0; i < nb_streams; i++) {
3133 int real_stream_index = program ? program[i] : i;
3134 AVStream *st = ic->streams[real_stream_index];
3135 AVCodecContext *avctx = st->codec;
3136 if (avctx->codec_type != type)
3138 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3140 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3143 decoder = avcodec_find_decoder(st->codec->codec_id);
3146 ret = AVERROR_DECODER_NOT_FOUND;
3150 count = st->codec_info_nb_frames;
3151 bitrate = avctx->bit_rate;
3152 multiframe = FFMIN(5, count);
3153 if ((best_multiframe > multiframe) ||
3154 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3155 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3158 best_bitrate = bitrate;
3159 best_multiframe = multiframe;
3160 ret = real_stream_index;
3161 best_decoder = decoder;
3162 if (program && i == nb_streams - 1 && ret < 0) {
3164 nb_streams = ic->nb_streams;
3165 i = 0; /* no related stream found, try again with everything */
3169 *decoder_ret = best_decoder;
3173 /*******************************************************/
3175 int av_read_play(AVFormatContext *s)
3177 if (s->iformat->read_play)
3178 return s->iformat->read_play(s);
3180 return avio_pause(s->pb, 0);
3181 return AVERROR(ENOSYS);
3184 int av_read_pause(AVFormatContext *s)
3186 if (s->iformat->read_pause)
3187 return s->iformat->read_pause(s);
3189 return avio_pause(s->pb, 1);
3190 return AVERROR(ENOSYS);
3193 void ff_free_stream(AVFormatContext *s, AVStream *st){
3194 av_assert0(s->nb_streams>0);
3195 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3198 av_parser_close(st->parser);
3200 if (st->attached_pic.data)
3201 av_free_packet(&st->attached_pic);
3202 av_dict_free(&st->metadata);
3203 av_freep(&st->probe_data.buf);
3204 av_freep(&st->index_entries);
3205 av_freep(&st->codec->extradata);
3206 av_freep(&st->codec->subtitle_header);
3207 av_freep(&st->codec);
3208 av_freep(&st->priv_data);
3210 av_freep(&st->info->duration_error);
3211 av_freep(&st->info);
3212 av_freep(&s->streams[ --s->nb_streams ]);
3215 void avformat_free_context(AVFormatContext *s)
3223 if (s->iformat && s->iformat->priv_class && s->priv_data)
3224 av_opt_free(s->priv_data);
3226 for(i=s->nb_streams-1; i>=0; i--) {
3227 ff_free_stream(s, s->streams[i]);
3229 for(i=s->nb_programs-1; i>=0; i--) {
3230 av_dict_free(&s->programs[i]->metadata);
3231 av_freep(&s->programs[i]->stream_index);
3232 av_freep(&s->programs[i]);
3234 av_freep(&s->programs);
3235 av_freep(&s->priv_data);
3236 while(s->nb_chapters--) {
3237 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3238 av_freep(&s->chapters[s->nb_chapters]);
3240 av_freep(&s->chapters);
3241 av_dict_free(&s->metadata);
3242 av_freep(&s->streams);
3246 #if FF_API_CLOSE_INPUT_FILE
3247 void av_close_input_file(AVFormatContext *s)
3249 avformat_close_input(&s);
3253 void avformat_close_input(AVFormatContext **ps)
3255 AVFormatContext *s = *ps;
3256 AVIOContext *pb = s->pb;
3258 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3259 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3262 flush_packet_queue(s);
3265 if (s->iformat->read_close)
3266 s->iformat->read_close(s);
3269 avformat_free_context(s);
3276 #if FF_API_NEW_STREAM
3277 AVStream *av_new_stream(AVFormatContext *s, int id)
3279 AVStream *st = avformat_new_stream(s, NULL);
3286 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3292 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3294 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
3297 s->streams = streams;
3299 st = av_mallocz(sizeof(AVStream));
3302 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3306 st->info->last_dts = AV_NOPTS_VALUE;
3308 st->codec = avcodec_alloc_context3(c);
3310 /* no default bitrate if decoding */
3311 st->codec->bit_rate = 0;
3313 st->index = s->nb_streams;
3314 st->start_time = AV_NOPTS_VALUE;
3315 st->duration = AV_NOPTS_VALUE;
3316 /* we set the current DTS to 0 so that formats without any timestamps
3317 but durations get some timestamps, formats with some unknown
3318 timestamps have their first few packets buffered and the
3319 timestamps corrected before they are returned to the user */
3320 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3321 st->first_dts = AV_NOPTS_VALUE;
3322 st->probe_packets = MAX_PROBE_PACKETS;
3323 st->pts_wrap_reference = AV_NOPTS_VALUE;
3324 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3326 /* default pts setting is MPEG-like */
3327 avpriv_set_pts_info(st, 33, 1, 90000);
3328 st->last_IP_pts = AV_NOPTS_VALUE;
3329 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3330 st->pts_buffer[i]= AV_NOPTS_VALUE;
3331 st->reference_dts = AV_NOPTS_VALUE;
3333 st->sample_aspect_ratio = (AVRational){0,1};
3335 #if FF_API_R_FRAME_RATE
3336 st->info->last_dts = AV_NOPTS_VALUE;
3338 st->info->fps_first_dts = AV_NOPTS_VALUE;
3339 st->info->fps_last_dts = AV_NOPTS_VALUE;
3341 s->streams[s->nb_streams++] = st;
3345 AVProgram *av_new_program(AVFormatContext *ac, int id)
3347 AVProgram *program=NULL;
3350 av_dlog(ac, "new_program: id=0x%04x\n", id);
3352 for(i=0; i<ac->nb_programs; i++)
3353 if(ac->programs[i]->id == id)
3354 program = ac->programs[i];
3357 program = av_mallocz(sizeof(AVProgram));
3360 dynarray_add(&ac->programs, &ac->nb_programs, program);
3361 program->discard = AVDISCARD_NONE;
3364 program->pts_wrap_reference = AV_NOPTS_VALUE;
3365 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3367 program->start_time =
3368 program->end_time = AV_NOPTS_VALUE;
3373 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3375 AVChapter *chapter = NULL;
3378 for(i=0; i<s->nb_chapters; i++)
3379 if(s->chapters[i]->id == id)
3380 chapter = s->chapters[i];
3383 chapter= av_mallocz(sizeof(AVChapter));
3386 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3388 av_dict_set(&chapter->metadata, "title", title, 0);
3390 chapter->time_base= time_base;
3391 chapter->start = start;
3397 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3400 AVProgram *program=NULL;
3403 if (idx >= ac->nb_streams) {
3404 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3408 for(i=0; i<ac->nb_programs; i++){
3409 if(ac->programs[i]->id != progid)
3411 program = ac->programs[i];
3412 for(j=0; j<program->nb_stream_indexes; j++)
3413 if(program->stream_index[j] == idx)
3416 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3419 program->stream_index = tmp;
3420 program->stream_index[program->nb_stream_indexes++] = idx;
3425 static void print_fps(double d, const char *postfix){
3426 uint64_t v= lrintf(d*100);
3427 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3428 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3429 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3432 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3434 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3435 AVDictionaryEntry *tag=NULL;
3437 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3438 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3439 if(strcmp("language", tag->key)){
3440 const char *p = tag->value;
3441 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3444 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3445 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3446 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3448 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3449 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3452 av_log(ctx, AV_LOG_INFO, "\n");
3458 /* "user interface" functions */
3459 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3462 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3463 AVStream *st = ic->streams[i];
3464 int g = av_gcd(st->time_base.num, st->time_base.den);
3465 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3466 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3467 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3468 /* the pid is an important information, so we display it */
3469 /* XXX: add a generic system */
3470 if (flags & AVFMT_SHOW_IDS)
3471 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3473 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3474 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3475 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3476 if (st->sample_aspect_ratio.num && // default
3477 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3478 AVRational display_aspect_ratio;
3479 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3480 st->codec->width*st->sample_aspect_ratio.num,
3481 st->codec->height*st->sample_aspect_ratio.den,
3483 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3484 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3485 display_aspect_ratio.num, display_aspect_ratio.den);
3487 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3488 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3489 print_fps(av_q2d(st->avg_frame_rate), "fps");
3490 #if FF_API_R_FRAME_RATE
3491 if(st->r_frame_rate.den && st->r_frame_rate.num)
3492 print_fps(av_q2d(st->r_frame_rate), "tbr");
3494 if(st->time_base.den && st->time_base.num)
3495 print_fps(1/av_q2d(st->time_base), "tbn");
3496 if(st->codec->time_base.den && st->codec->time_base.num)
3497 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3499 if (st->disposition & AV_DISPOSITION_DEFAULT)
3500 av_log(NULL, AV_LOG_INFO, " (default)");
3501 if (st->disposition & AV_DISPOSITION_DUB)
3502 av_log(NULL, AV_LOG_INFO, " (dub)");
3503 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3504 av_log(NULL, AV_LOG_INFO, " (original)");
3505 if (st->disposition & AV_DISPOSITION_COMMENT)
3506 av_log(NULL, AV_LOG_INFO, " (comment)");
3507 if (st->disposition & AV_DISPOSITION_LYRICS)
3508 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3509 if (st->disposition & AV_DISPOSITION_KARAOKE)
3510 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3511 if (st->disposition & AV_DISPOSITION_FORCED)
3512 av_log(NULL, AV_LOG_INFO, " (forced)");
3513 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3514 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3515 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3516 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3517 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3518 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3519 av_log(NULL, AV_LOG_INFO, "\n");
3520 dump_metadata(NULL, st->metadata, " ");
3523 void av_dump_format(AVFormatContext *ic,
3529 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3530 if (ic->nb_streams && !printed)
3533 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3534 is_output ? "Output" : "Input",
3536 is_output ? ic->oformat->name : ic->iformat->name,
3537 is_output ? "to" : "from", url);
3538 dump_metadata(NULL, ic->metadata, " ");
3540 av_log(NULL, AV_LOG_INFO, " Duration: ");
3541 if (ic->duration != AV_NOPTS_VALUE) {
3542 int hours, mins, secs, us;
3543 int64_t duration = ic->duration + 5000;
3544 secs = duration / AV_TIME_BASE;
3545 us = duration % AV_TIME_BASE;
3550 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3551 (100 * us) / AV_TIME_BASE);
3553 av_log(NULL, AV_LOG_INFO, "N/A");
3555 if (ic->start_time != AV_NOPTS_VALUE) {
3557 av_log(NULL, AV_LOG_INFO, ", start: ");
3558 secs = ic->start_time / AV_TIME_BASE;
3559 us = abs(ic->start_time % AV_TIME_BASE);
3560 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3561 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3563 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3565 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3567 av_log(NULL, AV_LOG_INFO, "N/A");
3569 av_log(NULL, AV_LOG_INFO, "\n");
3571 for (i = 0; i < ic->nb_chapters; i++) {
3572 AVChapter *ch = ic->chapters[i];
3573 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3574 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3575 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3577 dump_metadata(NULL, ch->metadata, " ");
3579 if(ic->nb_programs) {
3580 int j, k, total = 0;
3581 for(j=0; j<ic->nb_programs; j++) {
3582 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3584 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3585 name ? name->value : "");
3586 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3587 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3588 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3589 printed[ic->programs[j]->stream_index[k]] = 1;
3591 total += ic->programs[j]->nb_stream_indexes;
3593 if (total < ic->nb_streams)
3594 av_log(NULL, AV_LOG_INFO, " No Program\n");
3596 for(i=0;i<ic->nb_streams;i++)
3598 dump_stream_format(ic, i, index, is_output);
3603 uint64_t ff_ntp_time(void)
3605 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3608 int av_get_frame_filename(char *buf, int buf_size,
3609 const char *path, int number)
3612 char *q, buf1[20], c;
3613 int nd, len, percentd_found;
3625 while (av_isdigit(*p)) {
3626 nd = nd * 10 + *p++ - '0';
3629 } while (av_isdigit(c));
3638 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3640 if ((q - buf + len) > buf_size - 1)
3642 memcpy(q, buf1, len);
3650 if ((q - buf) < buf_size - 1)
3654 if (!percentd_found)
3663 static void hex_dump_internal(void *avcl, FILE *f, int level,
3664 const uint8_t *buf, int size)
3667 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3669 for(i=0;i<size;i+=16) {
3676 PRINT(" %02x", buf[i+j]);
3681 for(j=0;j<len;j++) {
3683 if (c < ' ' || c > '~')
3692 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3694 hex_dump_internal(NULL, f, 0, buf, size);
3697 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3699 hex_dump_internal(avcl, NULL, level, buf, size);
3702 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3704 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3705 PRINT("stream #%d:\n", pkt->stream_index);
3706 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3707 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3708 /* DTS is _always_ valid after av_read_frame() */
3710 if (pkt->dts == AV_NOPTS_VALUE)
3713 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3714 /* PTS may not be known if B-frames are present. */
3716 if (pkt->pts == AV_NOPTS_VALUE)
3719 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3721 PRINT(" size=%d\n", pkt->size);
3724 av_hex_dump(f, pkt->data, pkt->size);
3727 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3729 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3732 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3735 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3738 void av_url_split(char *proto, int proto_size,
3739 char *authorization, int authorization_size,
3740 char *hostname, int hostname_size,
3742 char *path, int path_size,
3745 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3747 if (port_ptr) *port_ptr = -1;
3748 if (proto_size > 0) proto[0] = 0;
3749 if (authorization_size > 0) authorization[0] = 0;
3750 if (hostname_size > 0) hostname[0] = 0;
3751 if (path_size > 0) path[0] = 0;
3753 /* parse protocol */
3754 if ((p = strchr(url, ':'))) {
3755 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3760 /* no protocol means plain filename */
3761 av_strlcpy(path, url, path_size);
3765 /* separate path from hostname */
3766 ls = strchr(p, '/');
3767 ls2 = strchr(p, '?');
3771 ls = FFMIN(ls, ls2);
3773 av_strlcpy(path, ls, path_size);
3775 ls = &p[strlen(p)]; // XXX
3777 /* the rest is hostname, use that to parse auth/port */
3779 /* authorization (user[:pass]@hostname) */
3781 while ((at = strchr(p, '@')) && at < ls) {
3782 av_strlcpy(authorization, at2,
3783 FFMIN(authorization_size, at + 1 - at2));
3784 p = at + 1; /* skip '@' */
3787 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3789 av_strlcpy(hostname, p + 1,
3790 FFMIN(hostname_size, brk - p));
3791 if (brk[1] == ':' && port_ptr)
3792 *port_ptr = atoi(brk + 2);
3793 } else if ((col = strchr(p, ':')) && col < ls) {
3794 av_strlcpy(hostname, p,
3795 FFMIN(col + 1 - p, hostname_size));
3796 if (port_ptr) *port_ptr = atoi(col + 1);
3798 av_strlcpy(hostname, p,
3799 FFMIN(ls + 1 - p, hostname_size));
3803 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3806 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3809 'C', 'D', 'E', 'F' };
3810 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3813 'c', 'd', 'e', 'f' };
3814 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3816 for(i = 0; i < s; i++) {
3817 buff[i * 2] = hex_table[src[i] >> 4];
3818 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3824 int ff_hex_to_data(uint8_t *data, const char *p)
3831 p += strspn(p, SPACE_CHARS);
3834 c = av_toupper((unsigned char) *p++);
3835 if (c >= '0' && c <= '9')
3837 else if (c >= 'A' && c <= 'F')
3852 #if FF_API_SET_PTS_INFO
3853 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3854 unsigned int pts_num, unsigned int pts_den)
3856 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3860 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3861 unsigned int pts_num, unsigned int pts_den)
3864 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3865 if(new_tb.num != pts_num)
3866 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3868 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3870 if(new_tb.num <= 0 || new_tb.den <= 0) {
3871 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);
3874 s->time_base = new_tb;
3875 av_codec_set_pkt_timebase(s->codec, new_tb);
3876 s->pts_wrap_bits = pts_wrap_bits;
3879 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3882 const char *ptr = str;
3884 /* Parse key=value pairs. */
3887 char *dest = NULL, *dest_end;
3888 int key_len, dest_len = 0;
3890 /* Skip whitespace and potential commas. */
3891 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
3898 if (!(ptr = strchr(key, '=')))
3901 key_len = ptr - key;
3903 callback_get_buf(context, key, key_len, &dest, &dest_len);
3904 dest_end = dest + dest_len - 1;
3908 while (*ptr && *ptr != '\"') {
3912 if (dest && dest < dest_end)
3916 if (dest && dest < dest_end)
3924 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
3925 if (dest && dest < dest_end)
3933 int ff_find_stream_index(AVFormatContext *s, int id)
3936 for (i = 0; i < s->nb_streams; i++) {
3937 if (s->streams[i]->id == id)
3943 int64_t ff_iso8601_to_unix_time(const char *datestr)
3945 struct tm time1 = {0}, time2 = {0};
3947 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
3948 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
3950 return av_timegm(&time2);
3952 return av_timegm(&time1);
3955 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
3958 if (ofmt->query_codec)
3959 return ofmt->query_codec(codec_id, std_compliance);
3960 else if (ofmt->codec_tag)
3961 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
3962 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
3963 codec_id == ofmt->subtitle_codec)
3966 return AVERROR_PATCHWELCOME;
3969 int avformat_network_init(void)
3973 ff_network_inited_globally = 1;
3974 if ((ret = ff_network_init()) < 0)
3981 int avformat_network_deinit(void)
3990 int ff_add_param_change(AVPacket *pkt, int32_t channels,
3991 uint64_t channel_layout, int32_t sample_rate,
3992 int32_t width, int32_t height)
3998 return AVERROR(EINVAL);
4001 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4003 if (channel_layout) {
4005 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4009 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4011 if (width || height) {
4013 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4015 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4017 return AVERROR(ENOMEM);
4018 bytestream_put_le32(&data, flags);
4020 bytestream_put_le32(&data, channels);
4022 bytestream_put_le64(&data, channel_layout);
4024 bytestream_put_le32(&data, sample_rate);
4025 if (width || height) {
4026 bytestream_put_le32(&data, width);
4027 bytestream_put_le32(&data, height);
4032 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4034 AVRational undef = {0, 1};
4035 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4036 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4037 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4039 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4040 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4041 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4042 stream_sample_aspect_ratio = undef;
4044 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4045 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4046 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4047 frame_sample_aspect_ratio = undef;
4049 if (stream_sample_aspect_ratio.num)
4050 return stream_sample_aspect_ratio;
4052 return frame_sample_aspect_ratio;
4055 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4057 AVRational fr = st->r_frame_rate;
4059 if (st->codec->ticks_per_frame > 1) {
4060 AVRational codec_fr = av_inv_q(st->codec->time_base);
4061 AVRational avg_fr = st->avg_frame_rate;
4062 codec_fr.den *= st->codec->ticks_per_frame;
4063 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4064 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4071 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4074 if (*spec <= '9' && *spec >= '0') /* opt:index */
4075 return strtol(spec, NULL, 0) == st->index;
4076 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4077 *spec == 't') { /* opt:[vasdt] */
4078 enum AVMediaType type;
4081 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4082 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4083 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4084 case 'd': type = AVMEDIA_TYPE_DATA; break;
4085 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4086 default: av_assert0(0);
4088 if (type != st->codec->codec_type)
4090 if (*spec++ == ':') { /* possibly followed by :index */
4091 int i, index = strtol(spec, NULL, 0);
4092 for (i = 0; i < s->nb_streams; i++)
4093 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4094 return i == st->index;
4098 } else if (*spec == 'p' && *(spec + 1) == ':') {
4102 prog_id = strtol(spec, &endptr, 0);
4103 for (i = 0; i < s->nb_programs; i++) {
4104 if (s->programs[i]->id != prog_id)
4107 if (*endptr++ == ':') {
4108 int stream_idx = strtol(endptr, NULL, 0);
4109 return stream_idx >= 0 &&
4110 stream_idx < s->programs[i]->nb_stream_indexes &&
4111 st->index == s->programs[i]->stream_index[stream_idx];
4114 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4115 if (st->index == s->programs[i]->stream_index[j])
4119 } else if (*spec == '#') {
4122 sid = strtol(spec + 1, &endptr, 0);
4124 return st->id == sid;
4125 } else if (!*spec) /* empty specifier, matches everything */
4128 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4129 return AVERROR(EINVAL);
4132 void ff_generate_avci_extradata(AVStream *st)
4134 static const uint8_t avci100_1080p_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, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4140 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4141 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4142 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4143 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4144 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4146 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4149 static const uint8_t avci100_1080i_extradata[] = {
4151 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4152 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4153 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4154 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4155 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4156 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4157 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4158 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4159 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4160 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4161 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4163 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4166 static const uint8_t avci50_1080i_extradata[] = {
4168 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4169 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4170 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4171 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4172 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4173 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4174 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4175 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4176 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4177 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4178 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4180 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4183 static const uint8_t avci100_720p_extradata[] = {
4185 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4186 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4187 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4188 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4189 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4190 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4191 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4192 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4193 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4194 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4196 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4200 const uint8_t *data = 0;
4201 if (st->codec->width == 1920) {
4202 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4203 data = avci100_1080p_extradata;
4204 size = sizeof(avci100_1080p_extradata);
4206 data = avci100_1080i_extradata;
4207 size = sizeof(avci100_1080i_extradata);
4209 } else if (st->codec->width == 1440) {
4210 data = avci50_1080i_extradata;
4211 size = sizeof(avci50_1080i_extradata);
4212 } else if (st->codec->width == 1280) {
4213 data = avci100_720p_extradata;
4214 size = sizeof(avci100_720p_extradata);
4218 av_freep(&st->codec->extradata);
4219 st->codec->extradata_size = 0;
4220 st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
4221 if (!st->codec->extradata)
4223 memcpy(st->codec->extradata, data, size);
4224 st->codec->extradata_size = size;