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) {
2224 for(i=0;i<ic->nb_streams;i++) {
2225 st = ic->streams[i];
2226 if (st->codec->bit_rate > 0) {
2227 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2231 bit_rate += st->codec->bit_rate;
2234 ic->bit_rate = bit_rate;
2237 /* if duration is already set, we believe it */
2238 if (ic->duration == AV_NOPTS_VALUE &&
2239 ic->bit_rate != 0) {
2240 filesize = ic->pb ? avio_size(ic->pb) : 0;
2242 for(i = 0; i < ic->nb_streams; i++) {
2243 st = ic->streams[i];
2244 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2245 && st->duration == AV_NOPTS_VALUE) {
2246 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2247 st->duration = duration;
2254 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2257 #define DURATION_MAX_READ_SIZE 250000LL
2258 #define DURATION_MAX_RETRY 4
2260 /* only usable for MPEG-PS streams */
2261 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2263 AVPacket pkt1, *pkt = &pkt1;
2265 int read_size, i, ret;
2267 int64_t filesize, offset, duration;
2270 /* flush packet queue */
2271 flush_packet_queue(ic);
2273 for (i=0; i<ic->nb_streams; i++) {
2274 st = ic->streams[i];
2275 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2276 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2279 av_parser_close(st->parser);
2284 /* estimate the end time (duration) */
2285 /* XXX: may need to support wrapping */
2286 filesize = ic->pb ? avio_size(ic->pb) : 0;
2287 end_time = AV_NOPTS_VALUE;
2289 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2293 avio_seek(ic->pb, offset, SEEK_SET);
2296 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2300 ret = ff_read_packet(ic, pkt);
2301 } while(ret == AVERROR(EAGAIN));
2304 read_size += pkt->size;
2305 st = ic->streams[pkt->stream_index];
2306 if (pkt->pts != AV_NOPTS_VALUE &&
2307 (st->start_time != AV_NOPTS_VALUE ||
2308 st->first_dts != AV_NOPTS_VALUE)) {
2309 duration = end_time = pkt->pts;
2310 if (st->start_time != AV_NOPTS_VALUE)
2311 duration -= st->start_time;
2313 duration -= st->first_dts;
2315 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2316 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2317 st->duration = duration;
2318 st->info->last_duration = duration;
2321 av_free_packet(pkt);
2323 }while( end_time==AV_NOPTS_VALUE
2324 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2325 && ++retry <= DURATION_MAX_RETRY);
2327 fill_all_stream_timings(ic);
2329 avio_seek(ic->pb, old_offset, SEEK_SET);
2330 for (i=0; i<ic->nb_streams; i++) {
2332 st->cur_dts= st->first_dts;
2333 st->last_IP_pts = AV_NOPTS_VALUE;
2334 st->reference_dts = AV_NOPTS_VALUE;
2338 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2342 /* get the file size, if possible */
2343 if (ic->iformat->flags & AVFMT_NOFILE) {
2346 file_size = avio_size(ic->pb);
2347 file_size = FFMAX(0, file_size);
2350 if ((!strcmp(ic->iformat->name, "mpeg") ||
2351 !strcmp(ic->iformat->name, "mpegts")) &&
2352 file_size && ic->pb->seekable) {
2353 /* get accurate estimate from the PTSes */
2354 estimate_timings_from_pts(ic, old_offset);
2355 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2356 } else if (has_duration(ic)) {
2357 /* at least one component has timings - we use them for all
2359 fill_all_stream_timings(ic);
2360 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2362 /* less precise: use bitrate info */
2363 estimate_timings_from_bit_rate(ic);
2364 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2366 update_stream_timings(ic);
2370 AVStream av_unused *st;
2371 for(i = 0;i < ic->nb_streams; i++) {
2372 st = ic->streams[i];
2373 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2374 (double) st->start_time / AV_TIME_BASE,
2375 (double) st->duration / AV_TIME_BASE);
2377 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2378 (double) ic->start_time / AV_TIME_BASE,
2379 (double) ic->duration / AV_TIME_BASE,
2380 ic->bit_rate / 1000);
2384 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2386 AVCodecContext *avctx = st->codec;
2388 #define FAIL(errmsg) do { \
2390 *errmsg_ptr = errmsg; \
2394 switch (avctx->codec_type) {
2395 case AVMEDIA_TYPE_AUDIO:
2396 if (!avctx->frame_size && determinable_frame_size(avctx))
2397 FAIL("unspecified frame size");
2398 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2399 FAIL("unspecified sample format");
2400 if (!avctx->sample_rate)
2401 FAIL("unspecified sample rate");
2402 if (!avctx->channels)
2403 FAIL("unspecified number of channels");
2404 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2405 FAIL("no decodable DTS frames");
2407 case AVMEDIA_TYPE_VIDEO:
2409 FAIL("unspecified size");
2410 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2411 FAIL("unspecified pixel format");
2412 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2413 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2414 FAIL("no frame in rv30/40 and no sar");
2416 case AVMEDIA_TYPE_SUBTITLE:
2417 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2418 FAIL("unspecified size");
2420 case AVMEDIA_TYPE_DATA:
2421 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2424 if (avctx->codec_id == AV_CODEC_ID_NONE)
2425 FAIL("unknown codec");
2429 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2430 static int try_decode_frame(AVStream *st, AVPacket *avpkt, AVDictionary **options)
2432 const AVCodec *codec;
2433 int got_picture = 1, ret = 0;
2434 AVFrame *frame = avcodec_alloc_frame();
2435 AVSubtitle subtitle;
2436 AVPacket pkt = *avpkt;
2439 return AVERROR(ENOMEM);
2441 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2442 AVDictionary *thread_opt = NULL;
2444 codec = st->codec->codec ? st->codec->codec :
2445 avcodec_find_decoder(st->codec->codec_id);
2448 st->info->found_decoder = -1;
2453 /* force thread count to 1 since the h264 decoder will not extract SPS
2454 * and PPS to extradata during multi-threaded decoding */
2455 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2456 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2458 av_dict_free(&thread_opt);
2460 st->info->found_decoder = -1;
2463 st->info->found_decoder = 1;
2464 } else if (!st->info->found_decoder)
2465 st->info->found_decoder = 1;
2467 if (st->info->found_decoder < 0) {
2472 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2474 (!has_codec_parameters(st, NULL) ||
2475 !has_decode_delay_been_guessed(st) ||
2476 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2478 avcodec_get_frame_defaults(frame);
2479 switch(st->codec->codec_type) {
2480 case AVMEDIA_TYPE_VIDEO:
2481 ret = avcodec_decode_video2(st->codec, frame,
2482 &got_picture, &pkt);
2484 case AVMEDIA_TYPE_AUDIO:
2485 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2487 case AVMEDIA_TYPE_SUBTITLE:
2488 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2489 &got_picture, &pkt);
2497 st->nb_decoded_frames++;
2504 if(!pkt.data && !got_picture)
2508 avcodec_free_frame(&frame);
2512 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2514 while (tags->id != AV_CODEC_ID_NONE) {
2522 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2525 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2526 if(tag == tags[i].tag)
2529 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2530 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2533 return AV_CODEC_ID_NONE;
2536 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2540 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2541 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2542 default: return AV_CODEC_ID_NONE;
2547 if (sflags & (1 << (bps - 1))) {
2549 case 1: return AV_CODEC_ID_PCM_S8;
2550 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2551 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2552 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2553 default: return AV_CODEC_ID_NONE;
2557 case 1: return AV_CODEC_ID_PCM_U8;
2558 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2559 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2560 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2561 default: return AV_CODEC_ID_NONE;
2567 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2570 if (!av_codec_get_tag2(tags, id, &tag))
2575 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2579 for(i=0; tags && tags[i]; i++){
2580 const AVCodecTag *codec_tags = tags[i];
2581 while (codec_tags->id != AV_CODEC_ID_NONE) {
2582 if (codec_tags->id == id) {
2583 *tag = codec_tags->tag;
2592 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2595 for(i=0; tags && tags[i]; i++){
2596 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2597 if(id!=AV_CODEC_ID_NONE) return id;
2599 return AV_CODEC_ID_NONE;
2602 static void compute_chapters_end(AVFormatContext *s)
2605 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2607 for (i = 0; i < s->nb_chapters; i++)
2608 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2609 AVChapter *ch = s->chapters[i];
2610 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2613 for (j = 0; j < s->nb_chapters; j++) {
2614 AVChapter *ch1 = s->chapters[j];
2615 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2616 if (j != i && next_start > ch->start && next_start < end)
2619 ch->end = (end == INT64_MAX) ? ch->start : end;
2623 static int get_std_framerate(int i){
2624 if(i<60*12) return (i+1)*1001;
2625 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2629 * Is the time base unreliable.
2630 * This is a heuristic to balance between quick acceptance of the values in
2631 * the headers vs. some extra checks.
2632 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2633 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2634 * And there are "variable" fps files this needs to detect as well.
2636 static int tb_unreliable(AVCodecContext *c){
2637 if( c->time_base.den >= 101L*c->time_base.num
2638 || c->time_base.den < 5L*c->time_base.num
2639 /* || c->codec_tag == AV_RL32("DIVX")
2640 || c->codec_tag == AV_RL32("XVID")*/
2641 || c->codec_tag == AV_RL32("mp4v")
2642 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2643 || c->codec_id == AV_CODEC_ID_H264
2649 #if FF_API_FORMAT_PARAMETERS
2650 int av_find_stream_info(AVFormatContext *ic)
2652 return avformat_find_stream_info(ic, NULL);
2656 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2658 int i, count, ret = 0, j;
2661 AVPacket pkt1, *pkt;
2662 int64_t old_offset = avio_tell(ic->pb);
2663 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2664 int flush_codecs = ic->probesize > 0;
2667 av_log(ic, AV_LOG_DEBUG, "File position before avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
2669 for(i=0;i<ic->nb_streams;i++) {
2670 const AVCodec *codec;
2671 AVDictionary *thread_opt = NULL;
2672 st = ic->streams[i];
2674 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2675 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2676 /* if(!st->time_base.num)
2678 if(!st->codec->time_base.num)
2679 st->codec->time_base= st->time_base;
2681 //only for the split stuff
2682 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2683 st->parser = av_parser_init(st->codec->codec_id);
2685 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2686 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2687 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2688 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2690 } else if (st->need_parsing) {
2691 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2692 "%s, packets or times may be invalid.\n",
2693 avcodec_get_name(st->codec->codec_id));
2696 codec = st->codec->codec ? st->codec->codec :
2697 avcodec_find_decoder(st->codec->codec_id);
2699 /* force thread count to 1 since the h264 decoder will not extract SPS
2700 * and PPS to extradata during multi-threaded decoding */
2701 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2703 /* Ensure that subtitle_header is properly set. */
2704 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2705 && codec && !st->codec->codec)
2706 avcodec_open2(st->codec, codec, options ? &options[i]
2709 //try to just open decoders, in case this is enough to get parameters
2710 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2711 if (codec && !st->codec->codec)
2712 avcodec_open2(st->codec, codec, options ? &options[i]
2716 av_dict_free(&thread_opt);
2719 for (i=0; i<ic->nb_streams; i++) {
2720 #if FF_API_R_FRAME_RATE
2721 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2723 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2724 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2730 if (ff_check_interrupt(&ic->interrupt_callback)){
2732 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2736 /* check if one codec still needs to be handled */
2737 for(i=0;i<ic->nb_streams;i++) {
2738 int fps_analyze_framecount = 20;
2740 st = ic->streams[i];
2741 if (!has_codec_parameters(st, NULL))
2743 /* if the timebase is coarse (like the usual millisecond precision
2744 of mkv), we need to analyze more frames to reliably arrive at
2746 if (av_q2d(st->time_base) > 0.0005)
2747 fps_analyze_framecount *= 2;
2748 if (ic->fps_probe_size >= 0)
2749 fps_analyze_framecount = ic->fps_probe_size;
2750 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2751 fps_analyze_framecount = 0;
2752 /* variable fps and no guess at the real fps */
2753 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2754 && st->info->duration_count < fps_analyze_framecount
2755 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2757 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2759 if (st->first_dts == AV_NOPTS_VALUE &&
2760 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2761 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2764 if (i == ic->nb_streams) {
2765 /* NOTE: if the format has no header, then we need to read
2766 some packets to get most of the streams, so we cannot
2768 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2769 /* if we found the info for all the codecs, we can stop */
2771 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2776 /* we did not get all the codec info, but we read too much data */
2777 if (read_size >= ic->probesize) {
2779 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2780 for (i = 0; i < ic->nb_streams; i++)
2781 if (!ic->streams[i]->r_frame_rate.num &&
2782 ic->streams[i]->info->duration_count <= 1)
2783 av_log(ic, AV_LOG_WARNING,
2784 "Stream #%d: not enough frames to estimate rate; "
2785 "consider increasing probesize\n", i);
2789 /* NOTE: a new stream can be added there if no header in file
2790 (AVFMTCTX_NOHEADER) */
2791 ret = read_frame_internal(ic, &pkt1);
2792 if (ret == AVERROR(EAGAIN))
2800 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2801 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2803 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2804 &ic->packet_buffer_end);
2806 ret = AVERROR(ENOMEM);
2807 goto find_stream_info_err;
2809 if ((ret = av_dup_packet(pkt)) < 0)
2810 goto find_stream_info_err;
2813 read_size += pkt->size;
2815 st = ic->streams[pkt->stream_index];
2816 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2817 /* check for non-increasing dts */
2818 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2819 st->info->fps_last_dts >= pkt->dts) {
2820 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2821 "packet %d with DTS %"PRId64", packet %d with DTS "
2822 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2823 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2824 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2826 /* check for a discontinuity in dts - if the difference in dts
2827 * is more than 1000 times the average packet duration in the sequence,
2828 * we treat it as a discontinuity */
2829 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2830 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2831 (pkt->dts - st->info->fps_last_dts) / 1000 >
2832 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2833 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2834 "packet %d with DTS %"PRId64", packet %d with DTS "
2835 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2836 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2837 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2840 /* update stored dts values */
2841 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
2842 st->info->fps_first_dts = pkt->dts;
2843 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
2845 st->info->fps_last_dts = pkt->dts;
2846 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
2848 if (st->codec_info_nb_frames>1) {
2850 if (st->time_base.den > 0)
2851 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
2852 if (st->avg_frame_rate.num > 0)
2853 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
2856 && st->codec_info_nb_frames>30
2857 && st->info->fps_first_dts != AV_NOPTS_VALUE
2858 && st->info->fps_last_dts != AV_NOPTS_VALUE)
2859 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
2861 if (t >= ic->max_analyze_duration) {
2862 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
2865 if (pkt->duration) {
2866 st->info->codec_info_duration += pkt->duration;
2867 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
2870 #if FF_API_R_FRAME_RATE
2872 int64_t last = st->info->last_dts;
2874 if( pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && pkt->dts > last
2875 && pkt->dts - (uint64_t)last < INT64_MAX){
2876 double dts= (is_relative(pkt->dts) ? pkt->dts - RELATIVE_TS_BASE : pkt->dts) * av_q2d(st->time_base);
2877 int64_t duration= pkt->dts - last;
2879 if (!st->info->duration_error)
2880 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2881 if (!st->info->duration_error)
2882 return AVERROR(ENOMEM);
2884 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2885 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2886 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2887 int framerate= get_std_framerate(i);
2888 double sdts= dts*framerate/(1001*12);
2890 int64_t ticks= llrint(sdts+j*0.5);
2891 double error= sdts - ticks + j*0.5;
2892 st->info->duration_error[j][0][i] += error;
2893 st->info->duration_error[j][1][i] += error*error;
2896 st->info->duration_count++;
2897 // ignore the first 4 values, they might have some random jitter
2898 if (st->info->duration_count > 3 && is_relative(pkt->dts) == is_relative(last))
2899 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2901 if (pkt->dts != AV_NOPTS_VALUE)
2902 st->info->last_dts = pkt->dts;
2905 if(st->parser && st->parser->parser->split && !st->codec->extradata){
2906 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
2907 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
2908 st->codec->extradata_size= i;
2909 st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
2910 if (!st->codec->extradata)
2911 return AVERROR(ENOMEM);
2912 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
2913 memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2917 /* if still no information, we try to open the codec and to
2918 decompress the frame. We try to avoid that in most cases as
2919 it takes longer and uses more memory. For MPEG-4, we need to
2920 decompress for QuickTime.
2922 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
2923 least one frame of codec data, this makes sure the codec initializes
2924 the channel configuration and does not only trust the values from the container.
2926 try_decode_frame(st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
2928 st->codec_info_nb_frames++;
2933 AVPacket empty_pkt = { 0 };
2935 av_init_packet(&empty_pkt);
2937 for(i=0;i<ic->nb_streams;i++) {
2939 st = ic->streams[i];
2941 /* flush the decoders */
2942 if (st->info->found_decoder == 1) {
2944 err = try_decode_frame(st, &empty_pkt,
2945 (options && i < orig_nb_streams) ?
2946 &options[i] : NULL);
2947 } while (err > 0 && !has_codec_parameters(st, NULL));
2950 av_log(ic, AV_LOG_INFO,
2951 "decoding for stream %d failed\n", st->index);
2957 // close codecs which were opened in try_decode_frame()
2958 for(i=0;i<ic->nb_streams;i++) {
2959 st = ic->streams[i];
2960 avcodec_close(st->codec);
2962 for(i=0;i<ic->nb_streams;i++) {
2963 st = ic->streams[i];
2964 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2965 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
2966 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
2967 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
2968 st->codec->codec_tag= tag;
2971 /* estimate average framerate if not set by demuxer */
2972 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
2974 double best_error = 0.01;
2976 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
2977 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den)
2979 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2980 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
2981 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
2983 /* round guessed framerate to a "standard" framerate if it's
2984 * within 1% of the original estimate*/
2985 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
2986 AVRational std_fps = { get_std_framerate(j), 12*1001 };
2987 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
2989 if (error < best_error) {
2991 best_fps = std_fps.num;
2995 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
2996 best_fps, 12*1001, INT_MAX);
2999 // the check for tb_unreliable() is not completely correct, since this is not about handling
3000 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3001 // ipmovie.c produces.
3002 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)
3003 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);
3004 if (st->info->duration_count>1 && !st->r_frame_rate.num
3005 && tb_unreliable(st->codec)) {
3007 double best_error= 0.01;
3009 for (j=0; j<MAX_STD_TIMEBASES; j++) {
3012 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
3014 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
3017 int n= st->info->duration_count;
3018 double a= st->info->duration_error[k][0][j] / n;
3019 double error= st->info->duration_error[k][1][j]/n - a*a;
3021 if(error < best_error && best_error> 0.000000001){
3023 num = get_std_framerate(j);
3026 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3029 // do not increase frame rate by more than 1 % in order to match a standard rate.
3030 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
3031 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3034 if (!st->r_frame_rate.num){
3035 if( st->codec->time_base.den * (int64_t)st->time_base.num
3036 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3037 st->r_frame_rate.num = st->codec->time_base.den;
3038 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3040 st->r_frame_rate.num = st->time_base.den;
3041 st->r_frame_rate.den = st->time_base.num;
3044 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3045 if(!st->codec->bits_per_coded_sample)
3046 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3047 // set stream disposition based on audio service type
3048 switch (st->codec->audio_service_type) {
3049 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3050 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3051 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3052 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3053 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3054 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3055 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3056 st->disposition = AV_DISPOSITION_COMMENT; break;
3057 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3058 st->disposition = AV_DISPOSITION_KARAOKE; break;
3064 estimate_timings(ic, old_offset);
3066 if (ret >= 0 && ic->nb_streams)
3067 ret = -1; /* we could not have all the codec parameters before EOF */
3068 for(i=0;i<ic->nb_streams;i++) {
3070 st = ic->streams[i];
3071 if (!has_codec_parameters(st, &errmsg)) {
3073 avcodec_string(buf, sizeof(buf), st->codec, 0);
3074 av_log(ic, AV_LOG_WARNING,
3075 "Could not find codec parameters for stream %d (%s): %s\n"
3076 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3083 compute_chapters_end(ic);
3085 find_stream_info_err:
3086 for (i=0; i < ic->nb_streams; i++) {
3087 st = ic->streams[i];
3088 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3089 ic->streams[i]->codec->thread_count = 0;
3091 av_freep(&st->info->duration_error);
3092 av_freep(&ic->streams[i]->info);
3095 av_log(ic, AV_LOG_DEBUG, "File position after avformat_find_stream_info() is %"PRId64"\n", avio_tell(ic->pb));
3099 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3103 for (i = 0; i < ic->nb_programs; i++) {
3104 if (ic->programs[i] == last) {
3108 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3109 if (ic->programs[i]->stream_index[j] == s)
3110 return ic->programs[i];
3116 int av_find_best_stream(AVFormatContext *ic,
3117 enum AVMediaType type,
3118 int wanted_stream_nb,
3120 AVCodec **decoder_ret,
3123 int i, nb_streams = ic->nb_streams;
3124 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3125 unsigned *program = NULL;
3126 AVCodec *decoder = NULL, *best_decoder = NULL;
3128 if (related_stream >= 0 && wanted_stream_nb < 0) {
3129 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3131 program = p->stream_index;
3132 nb_streams = p->nb_stream_indexes;
3135 for (i = 0; i < nb_streams; i++) {
3136 int real_stream_index = program ? program[i] : i;
3137 AVStream *st = ic->streams[real_stream_index];
3138 AVCodecContext *avctx = st->codec;
3139 if (avctx->codec_type != type)
3141 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3143 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3146 decoder = avcodec_find_decoder(st->codec->codec_id);
3149 ret = AVERROR_DECODER_NOT_FOUND;
3153 count = st->codec_info_nb_frames;
3154 bitrate = avctx->bit_rate;
3155 multiframe = FFMIN(5, count);
3156 if ((best_multiframe > multiframe) ||
3157 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3158 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3161 best_bitrate = bitrate;
3162 best_multiframe = multiframe;
3163 ret = real_stream_index;
3164 best_decoder = decoder;
3165 if (program && i == nb_streams - 1 && ret < 0) {
3167 nb_streams = ic->nb_streams;
3168 i = 0; /* no related stream found, try again with everything */
3172 *decoder_ret = best_decoder;
3176 /*******************************************************/
3178 int av_read_play(AVFormatContext *s)
3180 if (s->iformat->read_play)
3181 return s->iformat->read_play(s);
3183 return avio_pause(s->pb, 0);
3184 return AVERROR(ENOSYS);
3187 int av_read_pause(AVFormatContext *s)
3189 if (s->iformat->read_pause)
3190 return s->iformat->read_pause(s);
3192 return avio_pause(s->pb, 1);
3193 return AVERROR(ENOSYS);
3196 void ff_free_stream(AVFormatContext *s, AVStream *st){
3197 av_assert0(s->nb_streams>0);
3198 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3201 av_parser_close(st->parser);
3203 if (st->attached_pic.data)
3204 av_free_packet(&st->attached_pic);
3205 av_dict_free(&st->metadata);
3206 av_freep(&st->probe_data.buf);
3207 av_freep(&st->index_entries);
3208 av_freep(&st->codec->extradata);
3209 av_freep(&st->codec->subtitle_header);
3210 av_freep(&st->codec);
3211 av_freep(&st->priv_data);
3213 av_freep(&st->info->duration_error);
3214 av_freep(&st->info);
3215 av_freep(&s->streams[ --s->nb_streams ]);
3218 void avformat_free_context(AVFormatContext *s)
3226 if (s->iformat && s->iformat->priv_class && s->priv_data)
3227 av_opt_free(s->priv_data);
3229 for(i=s->nb_streams-1; i>=0; i--) {
3230 ff_free_stream(s, s->streams[i]);
3232 for(i=s->nb_programs-1; i>=0; i--) {
3233 av_dict_free(&s->programs[i]->metadata);
3234 av_freep(&s->programs[i]->stream_index);
3235 av_freep(&s->programs[i]);
3237 av_freep(&s->programs);
3238 av_freep(&s->priv_data);
3239 while(s->nb_chapters--) {
3240 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3241 av_freep(&s->chapters[s->nb_chapters]);
3243 av_freep(&s->chapters);
3244 av_dict_free(&s->metadata);
3245 av_freep(&s->streams);
3249 #if FF_API_CLOSE_INPUT_FILE
3250 void av_close_input_file(AVFormatContext *s)
3252 avformat_close_input(&s);
3256 void avformat_close_input(AVFormatContext **ps)
3267 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3268 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3271 flush_packet_queue(s);
3274 if (s->iformat->read_close)
3275 s->iformat->read_close(s);
3278 avformat_free_context(s);
3285 #if FF_API_NEW_STREAM
3286 AVStream *av_new_stream(AVFormatContext *s, int id)
3288 AVStream *st = avformat_new_stream(s, NULL);
3295 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3301 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3303 streams = av_realloc(s->streams, (s->nb_streams + 1) * sizeof(*streams));
3306 s->streams = streams;
3308 st = av_mallocz(sizeof(AVStream));
3311 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3315 st->info->last_dts = AV_NOPTS_VALUE;
3317 st->codec = avcodec_alloc_context3(c);
3319 /* no default bitrate if decoding */
3320 st->codec->bit_rate = 0;
3322 st->index = s->nb_streams;
3323 st->start_time = AV_NOPTS_VALUE;
3324 st->duration = AV_NOPTS_VALUE;
3325 /* we set the current DTS to 0 so that formats without any timestamps
3326 but durations get some timestamps, formats with some unknown
3327 timestamps have their first few packets buffered and the
3328 timestamps corrected before they are returned to the user */
3329 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3330 st->first_dts = AV_NOPTS_VALUE;
3331 st->probe_packets = MAX_PROBE_PACKETS;
3332 st->pts_wrap_reference = AV_NOPTS_VALUE;
3333 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3335 /* default pts setting is MPEG-like */
3336 avpriv_set_pts_info(st, 33, 1, 90000);
3337 st->last_IP_pts = AV_NOPTS_VALUE;
3338 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3339 st->pts_buffer[i]= AV_NOPTS_VALUE;
3340 st->reference_dts = AV_NOPTS_VALUE;
3342 st->sample_aspect_ratio = (AVRational){0,1};
3344 #if FF_API_R_FRAME_RATE
3345 st->info->last_dts = AV_NOPTS_VALUE;
3347 st->info->fps_first_dts = AV_NOPTS_VALUE;
3348 st->info->fps_last_dts = AV_NOPTS_VALUE;
3350 s->streams[s->nb_streams++] = st;
3354 AVProgram *av_new_program(AVFormatContext *ac, int id)
3356 AVProgram *program=NULL;
3359 av_dlog(ac, "new_program: id=0x%04x\n", id);
3361 for(i=0; i<ac->nb_programs; i++)
3362 if(ac->programs[i]->id == id)
3363 program = ac->programs[i];
3366 program = av_mallocz(sizeof(AVProgram));
3369 dynarray_add(&ac->programs, &ac->nb_programs, program);
3370 program->discard = AVDISCARD_NONE;
3373 program->pts_wrap_reference = AV_NOPTS_VALUE;
3374 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3376 program->start_time =
3377 program->end_time = AV_NOPTS_VALUE;
3382 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3384 AVChapter *chapter = NULL;
3387 for(i=0; i<s->nb_chapters; i++)
3388 if(s->chapters[i]->id == id)
3389 chapter = s->chapters[i];
3392 chapter= av_mallocz(sizeof(AVChapter));
3395 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3397 av_dict_set(&chapter->metadata, "title", title, 0);
3399 chapter->time_base= time_base;
3400 chapter->start = start;
3406 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3409 AVProgram *program=NULL;
3412 if (idx >= ac->nb_streams) {
3413 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3417 for(i=0; i<ac->nb_programs; i++){
3418 if(ac->programs[i]->id != progid)
3420 program = ac->programs[i];
3421 for(j=0; j<program->nb_stream_indexes; j++)
3422 if(program->stream_index[j] == idx)
3425 tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
3428 program->stream_index = tmp;
3429 program->stream_index[program->nb_stream_indexes++] = idx;
3434 static void print_fps(double d, const char *postfix){
3435 uint64_t v= lrintf(d*100);
3436 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3437 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3438 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3441 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3443 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3444 AVDictionaryEntry *tag=NULL;
3446 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3447 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3448 if(strcmp("language", tag->key)){
3449 const char *p = tag->value;
3450 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3453 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3454 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3455 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3457 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3458 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3461 av_log(ctx, AV_LOG_INFO, "\n");
3467 /* "user interface" functions */
3468 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3471 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3472 AVStream *st = ic->streams[i];
3473 int g = av_gcd(st->time_base.num, st->time_base.den);
3474 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3475 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3476 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3477 /* the pid is an important information, so we display it */
3478 /* XXX: add a generic system */
3479 if (flags & AVFMT_SHOW_IDS)
3480 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3482 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3483 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3484 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3485 if (st->sample_aspect_ratio.num && // default
3486 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3487 AVRational display_aspect_ratio;
3488 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3489 st->codec->width*st->sample_aspect_ratio.num,
3490 st->codec->height*st->sample_aspect_ratio.den,
3492 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3493 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3494 display_aspect_ratio.num, display_aspect_ratio.den);
3496 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3497 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3498 print_fps(av_q2d(st->avg_frame_rate), "fps");
3499 #if FF_API_R_FRAME_RATE
3500 if(st->r_frame_rate.den && st->r_frame_rate.num)
3501 print_fps(av_q2d(st->r_frame_rate), "tbr");
3503 if(st->time_base.den && st->time_base.num)
3504 print_fps(1/av_q2d(st->time_base), "tbn");
3505 if(st->codec->time_base.den && st->codec->time_base.num)
3506 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3508 if (st->disposition & AV_DISPOSITION_DEFAULT)
3509 av_log(NULL, AV_LOG_INFO, " (default)");
3510 if (st->disposition & AV_DISPOSITION_DUB)
3511 av_log(NULL, AV_LOG_INFO, " (dub)");
3512 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3513 av_log(NULL, AV_LOG_INFO, " (original)");
3514 if (st->disposition & AV_DISPOSITION_COMMENT)
3515 av_log(NULL, AV_LOG_INFO, " (comment)");
3516 if (st->disposition & AV_DISPOSITION_LYRICS)
3517 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3518 if (st->disposition & AV_DISPOSITION_KARAOKE)
3519 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3520 if (st->disposition & AV_DISPOSITION_FORCED)
3521 av_log(NULL, AV_LOG_INFO, " (forced)");
3522 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3523 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3524 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3525 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3526 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3527 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3528 av_log(NULL, AV_LOG_INFO, "\n");
3529 dump_metadata(NULL, st->metadata, " ");
3532 void av_dump_format(AVFormatContext *ic,
3538 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3539 if (ic->nb_streams && !printed)
3542 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3543 is_output ? "Output" : "Input",
3545 is_output ? ic->oformat->name : ic->iformat->name,
3546 is_output ? "to" : "from", url);
3547 dump_metadata(NULL, ic->metadata, " ");
3549 av_log(NULL, AV_LOG_INFO, " Duration: ");
3550 if (ic->duration != AV_NOPTS_VALUE) {
3551 int hours, mins, secs, us;
3552 int64_t duration = ic->duration + 5000;
3553 secs = duration / AV_TIME_BASE;
3554 us = duration % AV_TIME_BASE;
3559 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3560 (100 * us) / AV_TIME_BASE);
3562 av_log(NULL, AV_LOG_INFO, "N/A");
3564 if (ic->start_time != AV_NOPTS_VALUE) {
3566 av_log(NULL, AV_LOG_INFO, ", start: ");
3567 secs = ic->start_time / AV_TIME_BASE;
3568 us = abs(ic->start_time % AV_TIME_BASE);
3569 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3570 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3572 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3574 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3576 av_log(NULL, AV_LOG_INFO, "N/A");
3578 av_log(NULL, AV_LOG_INFO, "\n");
3580 for (i = 0; i < ic->nb_chapters; i++) {
3581 AVChapter *ch = ic->chapters[i];
3582 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3583 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3584 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3586 dump_metadata(NULL, ch->metadata, " ");
3588 if(ic->nb_programs) {
3589 int j, k, total = 0;
3590 for(j=0; j<ic->nb_programs; j++) {
3591 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3593 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3594 name ? name->value : "");
3595 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3596 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3597 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3598 printed[ic->programs[j]->stream_index[k]] = 1;
3600 total += ic->programs[j]->nb_stream_indexes;
3602 if (total < ic->nb_streams)
3603 av_log(NULL, AV_LOG_INFO, " No Program\n");
3605 for(i=0;i<ic->nb_streams;i++)
3607 dump_stream_format(ic, i, index, is_output);
3612 uint64_t ff_ntp_time(void)
3614 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3617 int av_get_frame_filename(char *buf, int buf_size,
3618 const char *path, int number)
3621 char *q, buf1[20], c;
3622 int nd, len, percentd_found;
3634 while (av_isdigit(*p)) {
3635 nd = nd * 10 + *p++ - '0';
3638 } while (av_isdigit(c));
3647 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3649 if ((q - buf + len) > buf_size - 1)
3651 memcpy(q, buf1, len);
3659 if ((q - buf) < buf_size - 1)
3663 if (!percentd_found)
3672 static void hex_dump_internal(void *avcl, FILE *f, int level,
3673 const uint8_t *buf, int size)
3676 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3678 for(i=0;i<size;i+=16) {
3685 PRINT(" %02x", buf[i+j]);
3690 for(j=0;j<len;j++) {
3692 if (c < ' ' || c > '~')
3701 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3703 hex_dump_internal(NULL, f, 0, buf, size);
3706 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3708 hex_dump_internal(avcl, NULL, level, buf, size);
3711 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3713 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3714 PRINT("stream #%d:\n", pkt->stream_index);
3715 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3716 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3717 /* DTS is _always_ valid after av_read_frame() */
3719 if (pkt->dts == AV_NOPTS_VALUE)
3722 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3723 /* PTS may not be known if B-frames are present. */
3725 if (pkt->pts == AV_NOPTS_VALUE)
3728 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3730 PRINT(" size=%d\n", pkt->size);
3733 av_hex_dump(f, pkt->data, pkt->size);
3736 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3738 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3741 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3744 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3747 void av_url_split(char *proto, int proto_size,
3748 char *authorization, int authorization_size,
3749 char *hostname, int hostname_size,
3751 char *path, int path_size,
3754 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3756 if (port_ptr) *port_ptr = -1;
3757 if (proto_size > 0) proto[0] = 0;
3758 if (authorization_size > 0) authorization[0] = 0;
3759 if (hostname_size > 0) hostname[0] = 0;
3760 if (path_size > 0) path[0] = 0;
3762 /* parse protocol */
3763 if ((p = strchr(url, ':'))) {
3764 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3769 /* no protocol means plain filename */
3770 av_strlcpy(path, url, path_size);
3774 /* separate path from hostname */
3775 ls = strchr(p, '/');
3776 ls2 = strchr(p, '?');
3780 ls = FFMIN(ls, ls2);
3782 av_strlcpy(path, ls, path_size);
3784 ls = &p[strlen(p)]; // XXX
3786 /* the rest is hostname, use that to parse auth/port */
3788 /* authorization (user[:pass]@hostname) */
3790 while ((at = strchr(p, '@')) && at < ls) {
3791 av_strlcpy(authorization, at2,
3792 FFMIN(authorization_size, at + 1 - at2));
3793 p = at + 1; /* skip '@' */
3796 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3798 av_strlcpy(hostname, p + 1,
3799 FFMIN(hostname_size, brk - p));
3800 if (brk[1] == ':' && port_ptr)
3801 *port_ptr = atoi(brk + 2);
3802 } else if ((col = strchr(p, ':')) && col < ls) {
3803 av_strlcpy(hostname, p,
3804 FFMIN(col + 1 - p, hostname_size));
3805 if (port_ptr) *port_ptr = atoi(col + 1);
3807 av_strlcpy(hostname, p,
3808 FFMIN(ls + 1 - p, hostname_size));
3812 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3815 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3818 'C', 'D', 'E', 'F' };
3819 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3822 'c', 'd', 'e', 'f' };
3823 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3825 for(i = 0; i < s; i++) {
3826 buff[i * 2] = hex_table[src[i] >> 4];
3827 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3833 int ff_hex_to_data(uint8_t *data, const char *p)
3840 p += strspn(p, SPACE_CHARS);
3843 c = av_toupper((unsigned char) *p++);
3844 if (c >= '0' && c <= '9')
3846 else if (c >= 'A' && c <= 'F')
3861 #if FF_API_SET_PTS_INFO
3862 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3863 unsigned int pts_num, unsigned int pts_den)
3865 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3869 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3870 unsigned int pts_num, unsigned int pts_den)
3873 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3874 if(new_tb.num != pts_num)
3875 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3877 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3879 if(new_tb.num <= 0 || new_tb.den <= 0) {
3880 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);
3883 s->time_base = new_tb;
3884 av_codec_set_pkt_timebase(s->codec, new_tb);
3885 s->pts_wrap_bits = pts_wrap_bits;
3888 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3891 const char *ptr = str;
3893 /* Parse key=value pairs. */
3896 char *dest = NULL, *dest_end;
3897 int key_len, dest_len = 0;
3899 /* Skip whitespace and potential commas. */
3900 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
3907 if (!(ptr = strchr(key, '=')))
3910 key_len = ptr - key;
3912 callback_get_buf(context, key, key_len, &dest, &dest_len);
3913 dest_end = dest + dest_len - 1;
3917 while (*ptr && *ptr != '\"') {
3921 if (dest && dest < dest_end)
3925 if (dest && dest < dest_end)
3933 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
3934 if (dest && dest < dest_end)
3942 int ff_find_stream_index(AVFormatContext *s, int id)
3945 for (i = 0; i < s->nb_streams; i++) {
3946 if (s->streams[i]->id == id)
3952 int64_t ff_iso8601_to_unix_time(const char *datestr)
3954 struct tm time1 = {0}, time2 = {0};
3956 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
3957 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
3959 return av_timegm(&time2);
3961 return av_timegm(&time1);
3964 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
3967 if (ofmt->query_codec)
3968 return ofmt->query_codec(codec_id, std_compliance);
3969 else if (ofmt->codec_tag)
3970 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
3971 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
3972 codec_id == ofmt->subtitle_codec)
3975 return AVERROR_PATCHWELCOME;
3978 int avformat_network_init(void)
3982 ff_network_inited_globally = 1;
3983 if ((ret = ff_network_init()) < 0)
3990 int avformat_network_deinit(void)
3999 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4000 uint64_t channel_layout, int32_t sample_rate,
4001 int32_t width, int32_t height)
4007 return AVERROR(EINVAL);
4010 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4012 if (channel_layout) {
4014 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4018 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4020 if (width || height) {
4022 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4024 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4026 return AVERROR(ENOMEM);
4027 bytestream_put_le32(&data, flags);
4029 bytestream_put_le32(&data, channels);
4031 bytestream_put_le64(&data, channel_layout);
4033 bytestream_put_le32(&data, sample_rate);
4034 if (width || height) {
4035 bytestream_put_le32(&data, width);
4036 bytestream_put_le32(&data, height);
4041 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4043 AVRational undef = {0, 1};
4044 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4045 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4046 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4048 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4049 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4050 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4051 stream_sample_aspect_ratio = undef;
4053 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4054 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4055 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4056 frame_sample_aspect_ratio = undef;
4058 if (stream_sample_aspect_ratio.num)
4059 return stream_sample_aspect_ratio;
4061 return frame_sample_aspect_ratio;
4064 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4066 AVRational fr = st->r_frame_rate;
4068 if (st->codec->ticks_per_frame > 1) {
4069 AVRational codec_fr = av_inv_q(st->codec->time_base);
4070 AVRational avg_fr = st->avg_frame_rate;
4071 codec_fr.den *= st->codec->ticks_per_frame;
4072 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4073 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4080 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4083 if (*spec <= '9' && *spec >= '0') /* opt:index */
4084 return strtol(spec, NULL, 0) == st->index;
4085 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4086 *spec == 't') { /* opt:[vasdt] */
4087 enum AVMediaType type;
4090 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4091 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4092 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4093 case 'd': type = AVMEDIA_TYPE_DATA; break;
4094 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4095 default: av_assert0(0);
4097 if (type != st->codec->codec_type)
4099 if (*spec++ == ':') { /* possibly followed by :index */
4100 int i, index = strtol(spec, NULL, 0);
4101 for (i = 0; i < s->nb_streams; i++)
4102 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4103 return i == st->index;
4107 } else if (*spec == 'p' && *(spec + 1) == ':') {
4111 prog_id = strtol(spec, &endptr, 0);
4112 for (i = 0; i < s->nb_programs; i++) {
4113 if (s->programs[i]->id != prog_id)
4116 if (*endptr++ == ':') {
4117 int stream_idx = strtol(endptr, NULL, 0);
4118 return stream_idx >= 0 &&
4119 stream_idx < s->programs[i]->nb_stream_indexes &&
4120 st->index == s->programs[i]->stream_index[stream_idx];
4123 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4124 if (st->index == s->programs[i]->stream_index[j])
4128 } else if (*spec == '#') {
4131 sid = strtol(spec + 1, &endptr, 0);
4133 return st->id == sid;
4134 } else if (!*spec) /* empty specifier, matches everything */
4137 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4138 return AVERROR(EINVAL);
4141 void ff_generate_avci_extradata(AVStream *st)
4143 static const uint8_t avci100_1080p_extradata[] = {
4145 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4146 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4147 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4148 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4149 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4150 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4151 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4152 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4153 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4155 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4158 static const uint8_t avci100_1080i_extradata[] = {
4160 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4161 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4162 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4163 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4164 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4165 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4166 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4167 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4168 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4169 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4170 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4172 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4175 static const uint8_t avci50_1080i_extradata[] = {
4177 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4178 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4179 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4180 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4181 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4182 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4183 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4184 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4185 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4186 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4187 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4189 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4192 static const uint8_t avci100_720p_extradata[] = {
4194 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4195 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4196 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4197 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4198 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4199 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4200 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4201 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4202 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4203 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4205 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4209 const uint8_t *data = 0;
4210 if (st->codec->width == 1920) {
4211 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4212 data = avci100_1080p_extradata;
4213 size = sizeof(avci100_1080p_extradata);
4215 data = avci100_1080i_extradata;
4216 size = sizeof(avci100_1080i_extradata);
4218 } else if (st->codec->width == 1440) {
4219 data = avci50_1080i_extradata;
4220 size = sizeof(avci50_1080i_extradata);
4221 } else if (st->codec->width == 1280) {
4222 data = avci100_720p_extradata;
4223 size = sizeof(avci100_720p_extradata);
4227 av_freep(&st->codec->extradata);
4228 st->codec->extradata_size = 0;
4229 st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
4230 if (!st->codec->extradata)
4232 memcpy(st->codec->extradata, data, size);
4233 st->codec->extradata_size = size;