2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "avio_internal.h"
27 #include "libavcodec/internal.h"
28 #include "libavcodec/raw.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/pixdesc.h"
36 #include "libavutil/avassert.h"
37 #include "libavutil/avstring.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/time.h"
41 #include "libavutil/timestamp.h"
43 #include "audiointerleave.h"
55 * various utility functions for use within FFmpeg
58 unsigned avformat_version(void)
60 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
61 return LIBAVFORMAT_VERSION_INT;
64 const char *avformat_configuration(void)
66 return FFMPEG_CONFIGURATION;
69 const char *avformat_license(void)
71 #define LICENSE_PREFIX "libavformat license: "
72 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
75 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
77 static int is_relative(int64_t ts) {
78 return ts > (RELATIVE_TS_BASE - (1LL<<48));
82 * Wrap a given time stamp, if there is an indication for an overflow
85 * @param timestamp the time stamp to wrap
86 * @return resulting time stamp
88 static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
90 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
91 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
92 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
93 timestamp < st->pts_wrap_reference)
94 return timestamp + (1ULL<<st->pts_wrap_bits);
95 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
96 timestamp >= st->pts_wrap_reference)
97 return timestamp - (1ULL<<st->pts_wrap_bits);
102 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
103 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
104 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
105 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
107 static AVCodec *find_decoder(AVFormatContext *s, AVStream *st, enum AVCodecID codec_id)
109 if (st->codec->codec)
110 return st->codec->codec;
112 switch(st->codec->codec_type){
113 case AVMEDIA_TYPE_VIDEO:
114 if(s->video_codec) return s->video_codec;
116 case AVMEDIA_TYPE_AUDIO:
117 if(s->audio_codec) return s->audio_codec;
119 case AVMEDIA_TYPE_SUBTITLE:
120 if(s->subtitle_codec) return s->subtitle_codec;
124 return avcodec_find_decoder(codec_id);
127 int av_format_get_probe_score(const AVFormatContext *s)
129 return s->probe_score;
132 /* an arbitrarily chosen "sane" max packet size -- 50M */
133 #define SANE_CHUNK_SIZE (50000000)
135 int ffio_limit(AVIOContext *s, int size)
138 int64_t remaining= s->maxsize - avio_tell(s);
139 if(remaining < size){
140 int64_t newsize= avio_size(s);
141 if(!s->maxsize || s->maxsize<newsize)
142 s->maxsize= newsize - !newsize;
143 remaining= s->maxsize - avio_tell(s);
144 remaining= FFMAX(remaining, 0);
147 if(s->maxsize>=0 && remaining+1 < size){
148 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
156 * Read the data in sane-sized chunks and append to pkt.
157 * Return the number of bytes read or an error.
159 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
161 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
162 int orig_size = pkt->size;
166 int prev_size = pkt->size;
170 * When the caller requests a lot of data, limit it to the amount left
171 * in file or SANE_CHUNK_SIZE when it is not known
174 if (read_size > SANE_CHUNK_SIZE/10) {
175 read_size = ffio_limit(s, read_size);
176 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
178 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
181 ret = av_grow_packet(pkt, read_size);
185 ret = avio_read(s, pkt->data + prev_size, read_size);
186 if (ret != read_size) {
187 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
194 pkt->flags |= AV_PKT_FLAG_CORRUPT;
199 return pkt->size > orig_size ? pkt->size - orig_size : ret;
202 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
207 pkt->pos = avio_tell(s);
209 return append_packet_chunked(s, pkt, size);
212 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
215 return av_get_packet(s, pkt, size);
216 return append_packet_chunked(s, pkt, size);
220 int av_filename_number_test(const char *filename)
223 return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
226 AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score_ret)
228 AVProbeData lpd = *pd;
229 AVInputFormat *fmt1 = NULL, *fmt;
230 int score, nodat = 0, score_max=0;
231 const static uint8_t zerobuffer[AVPROBE_PADDING_SIZE];
234 lpd.buf = zerobuffer;
236 if (lpd.buf_size > 10 && ff_id3v2_match(lpd.buf, ID3v2_DEFAULT_MAGIC)) {
237 int id3len = ff_id3v2_tag_len(lpd.buf);
238 if (lpd.buf_size > id3len + 16) {
240 lpd.buf_size -= id3len;
246 while ((fmt1 = av_iformat_next(fmt1))) {
247 if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
250 if (fmt1->read_probe) {
251 score = fmt1->read_probe(&lpd);
252 if(fmt1->extensions && av_match_ext(lpd.filename, fmt1->extensions))
253 score = FFMAX(score, nodat ? AVPROBE_SCORE_EXTENSION / 2 - 1 : 1);
254 } else if (fmt1->extensions) {
255 if (av_match_ext(lpd.filename, fmt1->extensions)) {
256 score = AVPROBE_SCORE_EXTENSION;
259 if (score > score_max) {
262 }else if (score == score_max)
266 score_max = FFMIN(AVPROBE_SCORE_EXTENSION / 2 - 1, score_max);
267 *score_ret= score_max;
272 AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
275 AVInputFormat *fmt= av_probe_input_format3(pd, is_opened, &score_ret);
276 if(score_ret > *score_max){
277 *score_max= score_ret;
283 AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
285 return av_probe_input_format2(pd, is_opened, &score);
288 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st, AVProbeData *pd)
290 static const struct {
291 const char *name; enum AVCodecID id; enum AVMediaType type;
293 { "aac" , AV_CODEC_ID_AAC , AVMEDIA_TYPE_AUDIO },
294 { "ac3" , AV_CODEC_ID_AC3 , AVMEDIA_TYPE_AUDIO },
295 { "dts" , AV_CODEC_ID_DTS , AVMEDIA_TYPE_AUDIO },
296 { "eac3" , AV_CODEC_ID_EAC3 , AVMEDIA_TYPE_AUDIO },
297 { "h264" , AV_CODEC_ID_H264 , AVMEDIA_TYPE_VIDEO },
298 { "loas" , AV_CODEC_ID_AAC_LATM , AVMEDIA_TYPE_AUDIO },
299 { "m4v" , AV_CODEC_ID_MPEG4 , AVMEDIA_TYPE_VIDEO },
300 { "mp3" , AV_CODEC_ID_MP3 , AVMEDIA_TYPE_AUDIO },
301 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
305 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
307 if (fmt && st->request_probe <= score) {
309 av_log(s, AV_LOG_DEBUG, "Probe with size=%d, packets=%d detected %s with score=%d\n",
310 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets, fmt->name, score);
311 for (i = 0; fmt_id_type[i].name; i++) {
312 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
313 st->codec->codec_id = fmt_id_type[i].id;
314 st->codec->codec_type = fmt_id_type[i].type;
322 /************************************************************/
323 /* input media file */
325 int av_demuxer_open(AVFormatContext *ic){
328 if (ic->iformat->read_header) {
329 err = ic->iformat->read_header(ic);
334 if (ic->pb && !ic->data_offset)
335 ic->data_offset = avio_tell(ic->pb);
341 int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
342 const char *filename, void *logctx,
343 unsigned int offset, unsigned int max_probe_size)
345 AVProbeData pd = { filename ? filename : "", NULL, -offset };
346 unsigned char *buf = NULL;
348 int ret = 0, probe_size, buf_offset = 0;
351 if (!max_probe_size) {
352 max_probe_size = PROBE_BUF_MAX;
353 } else if (max_probe_size > PROBE_BUF_MAX) {
354 max_probe_size = PROBE_BUF_MAX;
355 } else if (max_probe_size < PROBE_BUF_MIN) {
356 av_log(logctx, AV_LOG_ERROR,
357 "Specified probe size value %u cannot be < %u\n", max_probe_size, PROBE_BUF_MIN);
358 return AVERROR(EINVAL);
361 if (offset >= max_probe_size) {
362 return AVERROR(EINVAL);
365 if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
366 if (!av_strcasecmp(mime_type, "audio/aacp")) {
367 *fmt = av_find_input_format("aac");
369 av_freep(&mime_type);
372 for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
373 probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
375 if (probe_size < offset) {
378 score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
380 /* read probe data */
381 if ((ret = av_reallocp(&buf, probe_size + AVPROBE_PADDING_SIZE)) < 0)
383 if ((ret = avio_read(pb, buf + buf_offset, probe_size - buf_offset)) < 0) {
384 /* fail if error was not end of file, otherwise, lower score */
385 if (ret != AVERROR_EOF) {
390 ret = 0; /* error was end of file, nothing read */
392 pd.buf_size = buf_offset += ret;
393 pd.buf = &buf[offset];
395 memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
397 /* guess file format */
398 *fmt = av_probe_input_format2(&pd, 1, &score);
400 if(score <= AVPROBE_SCORE_RETRY){ //this can only be true in the last iteration
401 av_log(logctx, AV_LOG_WARNING, "Format %s detected only with low score of %d, misdetection possible!\n", (*fmt)->name, score);
403 av_log(logctx, AV_LOG_DEBUG, "Format %s probed with size=%d and score=%d\n", (*fmt)->name, probe_size, score);
405 FILE *f = fopen("probestat.tmp", "ab");
406 fprintf(f, "probe_size:%d format:%s score:%d filename:%s\n", probe_size, (*fmt)->name, score, filename);
414 return AVERROR_INVALIDDATA;
417 /* rewind. reuse probe buffer to avoid seeking */
418 ret = ffio_rewind_with_probe_data(pb, &buf, pd.buf_size);
420 return ret < 0 ? ret : score;
423 int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
424 const char *filename, void *logctx,
425 unsigned int offset, unsigned int max_probe_size)
427 int ret = av_probe_input_buffer2(pb, fmt, filename, logctx, offset, max_probe_size);
428 return ret < 0 ? ret : 0;
432 /* open input file and probe the format if necessary */
433 static int init_input(AVFormatContext *s, const char *filename, AVDictionary **options)
436 AVProbeData pd = {filename, NULL, 0};
437 int score = AVPROBE_SCORE_RETRY;
440 s->flags |= AVFMT_FLAG_CUSTOM_IO;
442 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
443 else if (s->iformat->flags & AVFMT_NOFILE)
444 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
445 "will be ignored with AVFMT_NOFILE format.\n");
449 if ( (s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
450 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
453 if ((ret = avio_open2(&s->pb, filename, AVIO_FLAG_READ | s->avio_flags,
454 &s->interrupt_callback, options)) < 0)
458 return av_probe_input_buffer2(s->pb, &s->iformat, filename, s, 0, s->probesize);
461 static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
462 AVPacketList **plast_pktl){
463 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
468 (*plast_pktl)->next = pktl;
470 *packet_buffer = pktl;
472 /* add the packet in the buffered packet list */
478 int avformat_queue_attached_pictures(AVFormatContext *s)
481 for (i = 0; i < s->nb_streams; i++)
482 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
483 s->streams[i]->discard < AVDISCARD_ALL) {
484 AVPacket copy = s->streams[i]->attached_pic;
485 copy.buf = av_buffer_ref(copy.buf);
487 return AVERROR(ENOMEM);
489 add_to_pktbuf(&s->raw_packet_buffer, ©, &s->raw_packet_buffer_end);
494 int avformat_open_input(AVFormatContext **ps, const char *filename, AVInputFormat *fmt, AVDictionary **options)
496 AVFormatContext *s = *ps;
498 AVDictionary *tmp = NULL;
499 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
501 if (!s && !(s = avformat_alloc_context()))
502 return AVERROR(ENOMEM);
504 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
505 return AVERROR(EINVAL);
511 av_dict_copy(&tmp, *options, 0);
513 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
516 if ((ret = init_input(s, filename, &tmp)) < 0)
518 s->probe_score = ret;
519 avio_skip(s->pb, s->skip_initial_bytes);
521 /* check filename in case an image number is expected */
522 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
523 if (!av_filename_number_test(filename)) {
524 ret = AVERROR(EINVAL);
529 s->duration = s->start_time = AV_NOPTS_VALUE;
530 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
532 /* allocate private data */
533 if (s->iformat->priv_data_size > 0) {
534 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
535 ret = AVERROR(ENOMEM);
538 if (s->iformat->priv_class) {
539 *(const AVClass**)s->priv_data = s->iformat->priv_class;
540 av_opt_set_defaults(s->priv_data);
541 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
546 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
548 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
550 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
551 if ((ret = s->iformat->read_header(s)) < 0)
554 if (id3v2_extra_meta) {
555 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
556 !strcmp(s->iformat->name, "tta")) {
557 if((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
560 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
562 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
564 if ((ret = avformat_queue_attached_pictures(s)) < 0)
567 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->data_offset)
568 s->data_offset = avio_tell(s->pb);
570 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
573 av_dict_free(options);
580 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
582 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
584 avformat_free_context(s);
589 /*******************************************************/
591 static void force_codec_ids(AVFormatContext *s, AVStream *st)
593 switch(st->codec->codec_type){
594 case AVMEDIA_TYPE_VIDEO:
595 if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
597 case AVMEDIA_TYPE_AUDIO:
598 if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
600 case AVMEDIA_TYPE_SUBTITLE:
601 if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
606 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
608 if(st->request_probe>0){
609 AVProbeData *pd = &st->probe_data;
611 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
615 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
617 av_log(s, AV_LOG_WARNING,
618 "Failed to reallocate probe buffer for stream %d\n",
623 memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
624 pd->buf_size += pkt->size;
625 memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
628 st->probe_packets = 0;
630 av_log(s, AV_LOG_WARNING, "nothing to probe for stream %d\n",
635 end= s->raw_packet_buffer_remaining_size <= 0
636 || st->probe_packets<=0;
638 if(end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
639 int score= set_codec_from_probe_data(s, st, pd);
640 if( (st->codec->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_RETRY)
644 st->request_probe= -1;
645 if(st->codec->codec_id != AV_CODEC_ID_NONE){
646 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
648 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
650 force_codec_ids(s, st);
656 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
658 int64_t ref = pkt->dts;
659 int i, pts_wrap_behavior;
660 int64_t pts_wrap_reference;
661 AVProgram *first_program;
663 if (ref == AV_NOPTS_VALUE)
665 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
667 ref &= (1LL<<st->pts_wrap_bits)-1;
669 // reference time stamp should be 60 s before first time stamp
670 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
671 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
672 pts_wrap_behavior = (ref < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
673 (ref < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
674 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
676 first_program = av_find_program_from_stream(s, NULL, stream_index);
678 if (!first_program) {
679 int default_stream_index = av_find_default_stream_index(s);
680 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
681 for (i=0; i<s->nb_streams; i++) {
682 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
683 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
687 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
688 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
692 AVProgram *program = first_program;
694 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
695 pts_wrap_reference = program->pts_wrap_reference;
696 pts_wrap_behavior = program->pts_wrap_behavior;
699 program = av_find_program_from_stream(s, program, stream_index);
702 // update every program with differing pts_wrap_reference
703 program = first_program;
705 if (program->pts_wrap_reference != pts_wrap_reference) {
706 for (i=0; i<program->nb_stream_indexes; i++) {
707 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
708 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
711 program->pts_wrap_reference = pts_wrap_reference;
712 program->pts_wrap_behavior = pts_wrap_behavior;
714 program = av_find_program_from_stream(s, program, stream_index);
720 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
726 AVPacketList *pktl = s->raw_packet_buffer;
730 st = s->streams[pkt->stream_index];
731 if (s->raw_packet_buffer_remaining_size <= 0) {
732 if ((err = probe_codec(s, st, NULL)) < 0)
735 if(st->request_probe <= 0){
736 s->raw_packet_buffer = pktl->next;
737 s->raw_packet_buffer_remaining_size += pkt->size;
746 ret= s->iformat->read_packet(s, pkt);
748 if (!pktl || ret == AVERROR(EAGAIN))
750 for (i = 0; i < s->nb_streams; i++) {
752 if (st->probe_packets) {
753 if ((err = probe_codec(s, st, NULL)) < 0)
756 av_assert0(st->request_probe <= 0);
761 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
762 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
763 av_log(s, AV_LOG_WARNING,
764 "Dropped corrupted packet (stream = %d)\n",
770 if(pkt->stream_index >= (unsigned)s->nb_streams){
771 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
775 st= s->streams[pkt->stream_index];
777 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
778 // correct first time stamps to negative values
779 if (!is_relative(st->first_dts))
780 st->first_dts = wrap_timestamp(st, st->first_dts);
781 if (!is_relative(st->start_time))
782 st->start_time = wrap_timestamp(st, st->start_time);
783 if (!is_relative(st->cur_dts))
784 st->cur_dts = wrap_timestamp(st, st->cur_dts);
787 pkt->dts = wrap_timestamp(st, pkt->dts);
788 pkt->pts = wrap_timestamp(st, pkt->pts);
790 force_codec_ids(s, st);
792 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
793 if (s->use_wallclock_as_timestamps)
794 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
796 if(!pktl && st->request_probe <= 0)
799 add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
800 s->raw_packet_buffer_remaining_size -= pkt->size;
802 if ((err = probe_codec(s, st, pkt)) < 0)
807 #if FF_API_READ_PACKET
808 int av_read_packet(AVFormatContext *s, AVPacket *pkt)
810 return ff_read_packet(s, pkt);
815 /**********************************************************/
817 static int determinable_frame_size(AVCodecContext *avctx)
819 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
820 avctx->codec_id == AV_CODEC_ID_MP1 ||
821 avctx->codec_id == AV_CODEC_ID_MP2 ||
822 avctx->codec_id == AV_CODEC_ID_MP3/* ||
823 avctx->codec_id == AV_CODEC_ID_CELT*/)
829 * Get the number of samples of an audio frame. Return -1 on error.
831 int ff_get_audio_frame_size(AVCodecContext *enc, int size, int mux)
835 /* give frame_size priority if demuxing */
836 if (!mux && enc->frame_size > 1)
837 return enc->frame_size;
839 if ((frame_size = av_get_audio_frame_duration(enc, size)) > 0)
842 /* Fall back on using frame_size if muxing. */
843 if (enc->frame_size > 1)
844 return enc->frame_size;
846 //For WMA we currently have no other means to calculate duration thus we
847 //do it here by assuming CBR, which is true for all known cases.
848 if(!mux && enc->bit_rate>0 && size>0 && enc->sample_rate>0 && enc->block_align>1) {
849 if (enc->codec_id == AV_CODEC_ID_WMAV1 || enc->codec_id == AV_CODEC_ID_WMAV2)
850 return ((int64_t)size * 8 * enc->sample_rate) / enc->bit_rate;
858 * Return the frame duration in seconds. Return 0 if not available.
860 void ff_compute_frame_duration(int *pnum, int *pden, AVStream *st,
861 AVCodecParserContext *pc, AVPacket *pkt)
867 switch(st->codec->codec_type) {
868 case AVMEDIA_TYPE_VIDEO:
869 if (st->r_frame_rate.num && !pc) {
870 *pnum = st->r_frame_rate.den;
871 *pden = st->r_frame_rate.num;
872 } else if(st->time_base.num*1000LL > st->time_base.den) {
873 *pnum = st->time_base.num;
874 *pden = st->time_base.den;
875 }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
876 *pnum = st->codec->time_base.num;
877 *pden = st->codec->time_base.den;
878 if (pc && pc->repeat_pict) {
879 if (*pnum > INT_MAX / (1 + pc->repeat_pict))
880 *pden /= 1 + pc->repeat_pict;
882 *pnum *= 1 + pc->repeat_pict;
884 //If this codec can be interlaced or progressive then we need a parser to compute duration of a packet
885 //Thus if we have no parser in such case leave duration undefined.
886 if(st->codec->ticks_per_frame>1 && !pc){
891 case AVMEDIA_TYPE_AUDIO:
892 frame_size = ff_get_audio_frame_size(st->codec, pkt->size, 0);
893 if (frame_size <= 0 || st->codec->sample_rate <= 0)
896 *pden = st->codec->sample_rate;
903 static int is_intra_only(AVCodecContext *enc){
904 const AVCodecDescriptor *desc;
906 if(enc->codec_type != AVMEDIA_TYPE_VIDEO)
909 desc = av_codec_get_codec_descriptor(enc);
911 desc = avcodec_descriptor_get(enc->codec_id);
912 av_codec_set_codec_descriptor(enc, desc);
915 return !!(desc->props & AV_CODEC_PROP_INTRA_ONLY);
919 static int has_decode_delay_been_guessed(AVStream *st)
921 if(st->codec->codec_id != AV_CODEC_ID_H264) return 1;
922 if(!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
924 #if CONFIG_H264_DECODER
925 if(st->codec->has_b_frames &&
926 avpriv_h264_has_num_reorder_frames(st->codec) == st->codec->has_b_frames)
929 if(st->codec->has_b_frames<3)
930 return st->nb_decoded_frames >= 7;
931 else if(st->codec->has_b_frames<4)
932 return st->nb_decoded_frames >= 18;
934 return st->nb_decoded_frames >= 20;
937 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
941 if (pktl == s->parse_queue_end)
942 return s->packet_buffer;
946 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
947 int64_t dts, int64_t pts, AVPacket *pkt)
949 AVStream *st= s->streams[stream_index];
950 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
951 int64_t pts_buffer[MAX_REORDER_DELAY+1];
955 if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE || is_relative(dts))
958 delay = st->codec->has_b_frames;
959 st->first_dts= dts - (st->cur_dts - RELATIVE_TS_BASE);
961 shift = st->first_dts - RELATIVE_TS_BASE;
963 for (i=0; i<MAX_REORDER_DELAY+1; i++)
964 pts_buffer[i] = AV_NOPTS_VALUE;
966 if (is_relative(pts))
969 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
970 if(pktl->pkt.stream_index != stream_index)
972 if(is_relative(pktl->pkt.pts))
973 pktl->pkt.pts += shift;
975 if(is_relative(pktl->pkt.dts))
976 pktl->pkt.dts += shift;
978 if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
979 st->start_time= pktl->pkt.pts;
981 if(pktl->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
982 pts_buffer[0]= pktl->pkt.pts;
983 for(i=0; i<delay && pts_buffer[i] > pts_buffer[i+1]; i++)
984 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i+1]);
985 if(pktl->pkt.dts == AV_NOPTS_VALUE)
986 pktl->pkt.dts= pts_buffer[0];
990 if (st->start_time == AV_NOPTS_VALUE)
991 st->start_time = pts;
994 static void update_initial_durations(AVFormatContext *s, AVStream *st,
995 int stream_index, int duration)
997 AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
998 int64_t cur_dts= RELATIVE_TS_BASE;
1000 if(st->first_dts != AV_NOPTS_VALUE){
1001 cur_dts= st->first_dts;
1002 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1003 if(pktl->pkt.stream_index == stream_index){
1004 if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
1006 cur_dts -= duration;
1009 if(pktl && pktl->pkt.dts != st->first_dts) {
1010 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %d) in the queue\n",
1011 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1015 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1018 pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
1019 st->first_dts = cur_dts;
1020 }else if(st->cur_dts != RELATIVE_TS_BASE)
1023 for(; pktl; pktl= get_next_pkt(s, st, pktl)){
1024 if(pktl->pkt.stream_index != stream_index)
1026 if(pktl->pkt.pts == pktl->pkt.dts && (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts)
1027 && !pktl->pkt.duration){
1028 pktl->pkt.dts= cur_dts;
1029 if(!st->codec->has_b_frames)
1030 pktl->pkt.pts= cur_dts;
1031 // if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1032 pktl->pkt.duration = duration;
1035 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1038 st->cur_dts= cur_dts;
1041 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1042 AVCodecParserContext *pc, AVPacket *pkt)
1044 int num, den, presentation_delayed, delay, i;
1047 if (s->flags & AVFMT_FLAG_NOFILLIN)
1050 if((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1051 pkt->dts= AV_NOPTS_VALUE;
1053 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1054 && !st->codec->has_b_frames)
1055 //FIXME Set low_delay = 0 when has_b_frames = 1
1056 st->codec->has_b_frames = 1;
1058 /* do we have a video B-frame ? */
1059 delay= st->codec->has_b_frames;
1060 presentation_delayed = 0;
1062 /* XXX: need has_b_frame, but cannot get it if the codec is
1065 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1066 presentation_delayed = 1;
1068 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1069 st->pts_wrap_bits < 63 &&
1070 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1071 if(is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits-1)) > st->cur_dts) {
1072 pkt->dts -= 1LL<<st->pts_wrap_bits;
1074 pkt->pts += 1LL<<st->pts_wrap_bits;
1077 // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
1078 // we take the conservative approach and discard both
1079 // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
1080 if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
1081 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1082 if(strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1083 pkt->dts= AV_NOPTS_VALUE;
1086 if (pkt->duration == 0) {
1087 ff_compute_frame_duration(&num, &den, st, pc, pkt);
1089 pkt->duration = av_rescale_rnd(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num, AV_ROUND_DOWN);
1092 if(pkt->duration != 0 && (s->packet_buffer || s->parse_queue))
1093 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1095 /* correct timestamps with byte offset if demuxers only have timestamps
1096 on packet boundaries */
1097 if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
1098 /* this will estimate bitrate based on this frame's duration and size */
1099 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1100 if(pkt->pts != AV_NOPTS_VALUE)
1102 if(pkt->dts != AV_NOPTS_VALUE)
1106 /* This may be redundant, but it should not hurt. */
1107 if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
1108 presentation_delayed = 1;
1110 av_dlog(NULL, "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%d\n",
1111 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), pkt->stream_index, pc, pkt->duration);
1112 /* interpolate PTS and DTS if they are not present */
1113 //We skip H264 currently because delay and has_b_frames are not reliably set
1114 if((delay==0 || (delay==1 && pc)) && st->codec->codec_id != AV_CODEC_ID_H264){
1115 if (presentation_delayed) {
1116 /* DTS = decompression timestamp */
1117 /* PTS = presentation timestamp */
1118 if (pkt->dts == AV_NOPTS_VALUE)
1119 pkt->dts = st->last_IP_pts;
1120 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1121 if (pkt->dts == AV_NOPTS_VALUE)
1122 pkt->dts = st->cur_dts;
1124 /* this is tricky: the dts must be incremented by the duration
1125 of the frame we are displaying, i.e. the last I- or P-frame */
1126 if (st->last_IP_duration == 0)
1127 st->last_IP_duration = pkt->duration;
1128 if(pkt->dts != AV_NOPTS_VALUE)
1129 st->cur_dts = pkt->dts + st->last_IP_duration;
1130 st->last_IP_duration = pkt->duration;
1131 st->last_IP_pts= pkt->pts;
1132 /* cannot compute PTS if not present (we can compute it only
1133 by knowing the future */
1134 } else if (pkt->pts != AV_NOPTS_VALUE ||
1135 pkt->dts != AV_NOPTS_VALUE ||
1137 int duration = pkt->duration;
1139 /* presentation is not delayed : PTS and DTS are the same */
1140 if (pkt->pts == AV_NOPTS_VALUE)
1141 pkt->pts = pkt->dts;
1142 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1144 if (pkt->pts == AV_NOPTS_VALUE)
1145 pkt->pts = st->cur_dts;
1146 pkt->dts = pkt->pts;
1147 if (pkt->pts != AV_NOPTS_VALUE)
1148 st->cur_dts = pkt->pts + duration;
1152 if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY && has_decode_delay_been_guessed(st)){
1153 st->pts_buffer[0]= pkt->pts;
1154 for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
1155 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
1156 if(pkt->dts == AV_NOPTS_VALUE)
1157 pkt->dts= st->pts_buffer[0];
1159 if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
1160 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
1162 if(pkt->dts > st->cur_dts)
1163 st->cur_dts = pkt->dts;
1165 av_dlog(NULL, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1166 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1169 if (is_intra_only(st->codec))
1170 pkt->flags |= AV_PKT_FLAG_KEY;
1172 pkt->convergence_duration = pc->convergence_duration;
1175 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1178 AVPacketList *pktl = *pkt_buf;
1179 *pkt_buf = pktl->next;
1180 av_free_packet(&pktl->pkt);
1183 *pkt_buf_end = NULL;
1187 * Parse a packet, add all split parts to parse_queue
1189 * @param pkt packet to parse, NULL when flushing the parser at end of stream
1191 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1193 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1194 AVStream *st = s->streams[stream_index];
1195 uint8_t *data = pkt ? pkt->data : NULL;
1196 int size = pkt ? pkt->size : 0;
1197 int ret = 0, got_output = 0;
1200 av_init_packet(&flush_pkt);
1203 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1204 // preserve 0-size sync packets
1205 compute_pkt_fields(s, st, st->parser, pkt);
1208 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1211 av_init_packet(&out_pkt);
1212 len = av_parser_parse2(st->parser, st->codec,
1213 &out_pkt.data, &out_pkt.size, data, size,
1214 pkt->pts, pkt->dts, pkt->pos);
1216 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1218 /* increment read pointer */
1222 got_output = !!out_pkt.size;
1227 if (pkt->side_data) {
1228 out_pkt.side_data = pkt->side_data;
1229 out_pkt.side_data_elems = pkt->side_data_elems;
1230 pkt->side_data = NULL;
1231 pkt->side_data_elems = 0;
1234 /* set the duration */
1235 out_pkt.duration = 0;
1236 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1237 if (st->codec->sample_rate > 0) {
1238 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1239 (AVRational){ 1, st->codec->sample_rate },
1243 } else if (st->codec->time_base.num != 0 &&
1244 st->codec->time_base.den != 0) {
1245 out_pkt.duration = av_rescale_q_rnd(st->parser->duration,
1246 st->codec->time_base,
1251 out_pkt.stream_index = st->index;
1252 out_pkt.pts = st->parser->pts;
1253 out_pkt.dts = st->parser->dts;
1254 out_pkt.pos = st->parser->pos;
1256 if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1257 out_pkt.pos = st->parser->frame_offset;
1259 if (st->parser->key_frame == 1 ||
1260 (st->parser->key_frame == -1 &&
1261 st->parser->pict_type == AV_PICTURE_TYPE_I))
1262 out_pkt.flags |= AV_PKT_FLAG_KEY;
1264 if(st->parser->key_frame == -1 && st->parser->pict_type==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1265 out_pkt.flags |= AV_PKT_FLAG_KEY;
1267 compute_pkt_fields(s, st, st->parser, &out_pkt);
1269 if (out_pkt.data == pkt->data && out_pkt.size == pkt->size) {
1270 out_pkt.buf = pkt->buf;
1272 #if FF_API_DESTRUCT_PACKET
1273 FF_DISABLE_DEPRECATION_WARNINGS
1274 out_pkt.destruct = pkt->destruct;
1275 pkt->destruct = NULL;
1276 FF_ENABLE_DEPRECATION_WARNINGS
1279 if ((ret = av_dup_packet(&out_pkt)) < 0)
1282 if (!add_to_pktbuf(&s->parse_queue, &out_pkt, &s->parse_queue_end)) {
1283 av_free_packet(&out_pkt);
1284 ret = AVERROR(ENOMEM);
1290 /* end of the stream => close and free the parser */
1291 if (pkt == &flush_pkt) {
1292 av_parser_close(st->parser);
1297 av_free_packet(pkt);
1301 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1302 AVPacketList **pkt_buffer_end,
1306 av_assert0(*pkt_buffer);
1309 *pkt_buffer = pktl->next;
1311 *pkt_buffer_end = NULL;
1316 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1318 int ret = 0, i, got_packet = 0;
1320 av_init_packet(pkt);
1322 while (!got_packet && !s->parse_queue) {
1326 /* read next packet */
1327 ret = ff_read_packet(s, &cur_pkt);
1329 if (ret == AVERROR(EAGAIN))
1331 /* flush the parsers */
1332 for(i = 0; i < s->nb_streams; i++) {
1334 if (st->parser && st->need_parsing)
1335 parse_packet(s, NULL, st->index);
1337 /* all remaining packets are now in parse_queue =>
1338 * really terminate parsing */
1342 st = s->streams[cur_pkt.stream_index];
1344 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1345 cur_pkt.dts != AV_NOPTS_VALUE &&
1346 cur_pkt.pts < cur_pkt.dts) {
1347 av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1348 cur_pkt.stream_index,
1349 av_ts2str(cur_pkt.pts),
1350 av_ts2str(cur_pkt.dts),
1353 if (s->debug & FF_FDEBUG_TS)
1354 av_log(s, AV_LOG_DEBUG, "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1355 cur_pkt.stream_index,
1356 av_ts2str(cur_pkt.pts),
1357 av_ts2str(cur_pkt.dts),
1362 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1363 st->parser = av_parser_init(st->codec->codec_id);
1365 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1366 "%s, packets or times may be invalid.\n",
1367 avcodec_get_name(st->codec->codec_id));
1368 /* no parser available: just output the raw packets */
1369 st->need_parsing = AVSTREAM_PARSE_NONE;
1370 } else if(st->need_parsing == AVSTREAM_PARSE_HEADERS) {
1371 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1372 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_ONCE) {
1373 st->parser->flags |= PARSER_FLAG_ONCE;
1374 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
1375 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1379 if (!st->need_parsing || !st->parser) {
1380 /* no parsing needed: we just output the packet as is */
1382 compute_pkt_fields(s, st, NULL, pkt);
1383 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1384 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1385 ff_reduce_index(s, st->index);
1386 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1389 } else if (st->discard < AVDISCARD_ALL) {
1390 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1394 av_free_packet(&cur_pkt);
1396 if (pkt->flags & AV_PKT_FLAG_KEY)
1397 st->skip_to_keyframe = 0;
1398 if (st->skip_to_keyframe) {
1399 av_free_packet(&cur_pkt);
1407 if (!got_packet && s->parse_queue)
1408 ret = read_from_packet_buffer(&s->parse_queue, &s->parse_queue_end, pkt);
1411 AVStream *st = s->streams[pkt->stream_index];
1412 if (st->skip_samples) {
1413 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1415 AV_WL32(p, st->skip_samples);
1416 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d\n", st->skip_samples);
1418 st->skip_samples = 0;
1422 if(ret >= 0 && !(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1423 av_packet_merge_side_data(pkt);
1425 if(s->debug & FF_FDEBUG_TS)
1426 av_log(s, AV_LOG_DEBUG, "read_frame_internal stream=%d, pts=%s, dts=%s, size=%d, duration=%d, flags=%d\n",
1428 av_ts2str(pkt->pts),
1429 av_ts2str(pkt->dts),
1437 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1439 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1445 ret = s->packet_buffer ?
1446 read_from_packet_buffer(&s->packet_buffer, &s->packet_buffer_end, pkt) :
1447 read_frame_internal(s, pkt);
1454 AVPacketList *pktl = s->packet_buffer;
1457 AVPacket *next_pkt = &pktl->pkt;
1459 if (next_pkt->dts != AV_NOPTS_VALUE) {
1460 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1461 // last dts seen for this stream. if any of packets following
1462 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1463 int64_t last_dts = next_pkt->dts;
1464 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1465 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1466 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1467 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) { //not b frame
1468 next_pkt->pts = pktl->pkt.dts;
1470 if (last_dts != AV_NOPTS_VALUE) {
1471 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1472 last_dts = pktl->pkt.dts;
1477 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1478 // Fixing the last reference frame had none pts issue (For MXF etc).
1479 // We only do this when
1481 // 2. we are not able to resolve a pts value for current packet.
1482 // 3. the packets for this stream at the end of the files had valid dts.
1483 next_pkt->pts = last_dts + next_pkt->duration;
1485 pktl = s->packet_buffer;
1488 /* read packet from packet buffer, if there is data */
1489 if (!(next_pkt->pts == AV_NOPTS_VALUE &&
1490 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1491 ret = read_from_packet_buffer(&s->packet_buffer,
1492 &s->packet_buffer_end, pkt);
1497 ret = read_frame_internal(s, pkt);
1499 if (pktl && ret != AVERROR(EAGAIN)) {
1506 if (av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
1507 &s->packet_buffer_end)) < 0)
1508 return AVERROR(ENOMEM);
1513 st = s->streams[pkt->stream_index];
1514 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1515 ff_reduce_index(s, st->index);
1516 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1519 if (is_relative(pkt->dts))
1520 pkt->dts -= RELATIVE_TS_BASE;
1521 if (is_relative(pkt->pts))
1522 pkt->pts -= RELATIVE_TS_BASE;
1527 /* XXX: suppress the packet queue */
1528 static void flush_packet_queue(AVFormatContext *s)
1530 free_packet_buffer(&s->parse_queue, &s->parse_queue_end);
1531 free_packet_buffer(&s->packet_buffer, &s->packet_buffer_end);
1532 free_packet_buffer(&s->raw_packet_buffer, &s->raw_packet_buffer_end);
1534 s->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1537 /*******************************************************/
1540 int av_find_default_stream_index(AVFormatContext *s)
1542 int first_audio_index = -1;
1546 if (s->nb_streams <= 0)
1548 for(i = 0; i < s->nb_streams; i++) {
1550 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1551 !(st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
1554 if (first_audio_index < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1555 first_audio_index = i;
1557 return first_audio_index >= 0 ? first_audio_index : 0;
1561 * Flush the frame reader.
1563 void ff_read_frame_flush(AVFormatContext *s)
1568 flush_packet_queue(s);
1570 /* for each stream, reset read state */
1571 for(i = 0; i < s->nb_streams; i++) {
1575 av_parser_close(st->parser);
1578 st->last_IP_pts = AV_NOPTS_VALUE;
1579 if(st->first_dts == AV_NOPTS_VALUE) st->cur_dts = RELATIVE_TS_BASE;
1580 else st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
1582 st->probe_packets = MAX_PROBE_PACKETS;
1584 for(j=0; j<MAX_REORDER_DELAY+1; j++)
1585 st->pts_buffer[j]= AV_NOPTS_VALUE;
1589 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1593 for(i = 0; i < s->nb_streams; i++) {
1594 AVStream *st = s->streams[i];
1596 st->cur_dts = av_rescale(timestamp,
1597 st->time_base.den * (int64_t)ref_st->time_base.num,
1598 st->time_base.num * (int64_t)ref_st->time_base.den);
1602 void ff_reduce_index(AVFormatContext *s, int stream_index)
1604 AVStream *st= s->streams[stream_index];
1605 unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
1607 if((unsigned)st->nb_index_entries >= max_entries){
1609 for(i=0; 2*i<st->nb_index_entries; i++)
1610 st->index_entries[i]= st->index_entries[2*i];
1611 st->nb_index_entries= i;
1615 int ff_add_index_entry(AVIndexEntry **index_entries,
1616 int *nb_index_entries,
1617 unsigned int *index_entries_allocated_size,
1618 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1620 AVIndexEntry *entries, *ie;
1623 if((unsigned)*nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1626 if(timestamp == AV_NOPTS_VALUE)
1627 return AVERROR(EINVAL);
1629 if (size < 0 || size > 0x3FFFFFFF)
1630 return AVERROR(EINVAL);
1632 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1633 timestamp -= RELATIVE_TS_BASE;
1635 entries = av_fast_realloc(*index_entries,
1636 index_entries_allocated_size,
1637 (*nb_index_entries + 1) *
1638 sizeof(AVIndexEntry));
1642 *index_entries= entries;
1644 index= ff_index_search_timestamp(*index_entries, *nb_index_entries, timestamp, AVSEEK_FLAG_ANY);
1647 index= (*nb_index_entries)++;
1648 ie= &entries[index];
1649 av_assert0(index==0 || ie[-1].timestamp < timestamp);
1651 ie= &entries[index];
1652 if(ie->timestamp != timestamp){
1653 if(ie->timestamp <= timestamp)
1655 memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(*nb_index_entries - index));
1656 (*nb_index_entries)++;
1657 }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
1658 distance= ie->min_distance;
1662 ie->timestamp = timestamp;
1663 ie->min_distance= distance;
1670 int av_add_index_entry(AVStream *st,
1671 int64_t pos, int64_t timestamp, int size, int distance, int flags)
1673 timestamp = wrap_timestamp(st, timestamp);
1674 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1675 &st->index_entries_allocated_size, pos,
1676 timestamp, size, distance, flags);
1679 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1680 int64_t wanted_timestamp, int flags)
1688 //optimize appending index entries at the end
1689 if(b && entries[b-1].timestamp < wanted_timestamp)
1694 timestamp = entries[m].timestamp;
1695 if(timestamp >= wanted_timestamp)
1697 if(timestamp <= wanted_timestamp)
1700 m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1702 if(!(flags & AVSEEK_FLAG_ANY)){
1703 while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
1704 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1713 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
1716 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
1717 wanted_timestamp, flags);
1720 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
1721 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1723 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
1724 if (stream_index >= 0)
1725 ts = wrap_timestamp(s->streams[stream_index], ts);
1729 int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
1731 AVInputFormat *avif= s->iformat;
1732 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
1733 int64_t ts_min, ts_max, ts;
1738 if (stream_index < 0)
1741 av_dlog(s, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1744 ts_min= AV_NOPTS_VALUE;
1745 pos_limit= -1; //gcc falsely says it may be uninitialized
1747 st= s->streams[stream_index];
1748 if(st->index_entries){
1751 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()
1752 index= FFMAX(index, 0);
1753 e= &st->index_entries[index];
1755 if(e->timestamp <= target_ts || e->pos == e->min_distance){
1757 ts_min= e->timestamp;
1758 av_dlog(s, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
1759 pos_min, av_ts2str(ts_min));
1761 av_assert1(index==0);
1764 index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
1765 av_assert0(index < st->nb_index_entries);
1767 e= &st->index_entries[index];
1768 av_assert1(e->timestamp >= target_ts);
1770 ts_max= e->timestamp;
1771 pos_limit= pos_max - e->min_distance;
1772 av_dlog(s, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%s\n",
1773 pos_max, pos_limit, av_ts2str(ts_max));
1777 pos= ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
1782 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
1785 ff_read_frame_flush(s);
1786 ff_update_cur_dts(s, st, ts);
1791 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
1792 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1795 int64_t limit, ts_max;
1796 int64_t filesize = avio_size(s->pb);
1797 int64_t pos_max = filesize - 1;
1800 pos_max = FFMAX(0, (pos_max) - step);
1801 ts_max = ff_read_timestamp(s, stream_index, &pos_max, limit, read_timestamp);
1803 }while(ts_max == AV_NOPTS_VALUE && 2*limit > step);
1804 if (ts_max == AV_NOPTS_VALUE)
1808 int64_t tmp_pos = pos_max + 1;
1809 int64_t tmp_ts = ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
1810 if(tmp_ts == AV_NOPTS_VALUE)
1812 av_assert0(tmp_pos > pos_max);
1815 if(tmp_pos >= filesize)
1827 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
1828 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
1829 int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret,
1830 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
1837 av_dlog(s, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
1839 if(ts_min == AV_NOPTS_VALUE){
1840 pos_min = s->data_offset;
1841 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1842 if (ts_min == AV_NOPTS_VALUE)
1846 if(ts_min >= target_ts){
1851 if(ts_max == AV_NOPTS_VALUE){
1852 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
1857 if(ts_max <= target_ts){
1862 if(ts_min > ts_max){
1864 }else if(ts_min == ts_max){
1869 while (pos_min < pos_limit) {
1870 av_dlog(s, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
1871 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
1872 assert(pos_limit <= pos_max);
1875 int64_t approximate_keyframe_distance= pos_max - pos_limit;
1876 // interpolate position (better than dichotomy)
1877 pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
1878 + pos_min - approximate_keyframe_distance;
1879 }else if(no_change==1){
1880 // bisection, if interpolation failed to change min or max pos last time
1881 pos = (pos_min + pos_limit)>>1;
1883 /* linear search if bisection failed, can only happen if there
1884 are very few or no keyframes between min/max */
1889 else if(pos > pos_limit)
1893 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
1898 av_dlog(s, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
1899 pos_min, pos, pos_max,
1900 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
1901 pos_limit, start_pos, no_change);
1902 if(ts == AV_NOPTS_VALUE){
1903 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
1906 assert(ts != AV_NOPTS_VALUE);
1907 if (target_ts <= ts) {
1908 pos_limit = start_pos - 1;
1912 if (target_ts >= ts) {
1918 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
1919 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
1922 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1924 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
1925 av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
1926 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
1932 static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
1933 int64_t pos_min, pos_max;
1935 pos_min = s->data_offset;
1936 pos_max = avio_size(s->pb) - 1;
1938 if (pos < pos_min) pos= pos_min;
1939 else if(pos > pos_max) pos= pos_max;
1941 avio_seek(s->pb, pos, SEEK_SET);
1943 s->io_repositioned = 1;
1948 static int seek_frame_generic(AVFormatContext *s,
1949 int stream_index, int64_t timestamp, int flags)
1956 st = s->streams[stream_index];
1958 index = av_index_search_timestamp(st, timestamp, flags);
1960 if(index < 0 && st->nb_index_entries && timestamp < st->index_entries[0].timestamp)
1963 if(index < 0 || index==st->nb_index_entries-1){
1967 if(st->nb_index_entries){
1968 av_assert0(st->index_entries);
1969 ie= &st->index_entries[st->nb_index_entries-1];
1970 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
1972 ff_update_cur_dts(s, st, ie->timestamp);
1974 if ((ret = avio_seek(s->pb, s->data_offset, SEEK_SET)) < 0)
1980 read_status = av_read_frame(s, &pkt);
1981 } while (read_status == AVERROR(EAGAIN));
1982 if (read_status < 0)
1984 av_free_packet(&pkt);
1985 if(stream_index == pkt.stream_index && pkt.dts > timestamp){
1986 if(pkt.flags & AV_PKT_FLAG_KEY)
1988 if(nonkey++ > 1000 && st->codec->codec_id != AV_CODEC_ID_CDGRAPHICS){
1989 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);
1994 index = av_index_search_timestamp(st, timestamp, flags);
1999 ff_read_frame_flush(s);
2000 if (s->iformat->read_seek){
2001 if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2004 ie = &st->index_entries[index];
2005 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2007 ff_update_cur_dts(s, st, ie->timestamp);
2012 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2013 int64_t timestamp, int flags)
2018 if (flags & AVSEEK_FLAG_BYTE) {
2019 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2021 ff_read_frame_flush(s);
2022 return seek_frame_byte(s, stream_index, timestamp, flags);
2025 if(stream_index < 0){
2026 stream_index= av_find_default_stream_index(s);
2027 if(stream_index < 0)
2030 st= s->streams[stream_index];
2031 /* timestamp for default must be expressed in AV_TIME_BASE units */
2032 timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
2035 /* first, we try the format specific seek */
2036 if (s->iformat->read_seek) {
2037 ff_read_frame_flush(s);
2038 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2045 if (s->iformat->read_timestamp && !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2046 ff_read_frame_flush(s);
2047 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2048 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2049 ff_read_frame_flush(s);
2050 return seek_frame_generic(s, stream_index, timestamp, flags);
2056 int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
2060 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2061 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2062 if ((flags & AVSEEK_FLAG_BACKWARD))
2066 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2067 flags & ~AVSEEK_FLAG_BACKWARD);
2070 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2073 ret = avformat_queue_attached_pictures(s);
2078 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
2080 if(min_ts > ts || max_ts < ts)
2082 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2083 return AVERROR(EINVAL);
2086 flags |= AVSEEK_FLAG_ANY;
2087 flags &= ~AVSEEK_FLAG_BACKWARD;
2089 if (s->iformat->read_seek2) {
2091 ff_read_frame_flush(s);
2093 if (stream_index == -1 && s->nb_streams == 1) {
2094 AVRational time_base = s->streams[0]->time_base;
2095 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2096 min_ts = av_rescale_rnd(min_ts, time_base.den,
2097 time_base.num * (int64_t)AV_TIME_BASE,
2098 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2099 max_ts = av_rescale_rnd(max_ts, time_base.den,
2100 time_base.num * (int64_t)AV_TIME_BASE,
2101 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2104 ret = s->iformat->read_seek2(s, stream_index, min_ts, ts, max_ts, flags);
2107 ret = avformat_queue_attached_pictures(s);
2111 if(s->iformat->read_timestamp){
2112 //try to seek via read_timestamp()
2115 // Fall back on old API if new is not implemented but old is.
2116 // Note the old API has somewhat different semantics.
2117 if (s->iformat->read_seek || 1) {
2118 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2119 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2120 if (ret<0 && ts != min_ts && max_ts != ts) {
2121 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2123 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2128 // try some generic seek like seek_frame_generic() but with new ts semantics
2129 return -1; //unreachable
2132 /*******************************************************/
2135 * Return TRUE if the stream has accurate duration in any stream.
2137 * @return TRUE if the stream has accurate duration for at least one component.
2139 static int has_duration(AVFormatContext *ic)
2144 for(i = 0;i < ic->nb_streams; i++) {
2145 st = ic->streams[i];
2146 if (st->duration != AV_NOPTS_VALUE)
2149 if (ic->duration != AV_NOPTS_VALUE)
2155 * Estimate the stream timings from the one of each components.
2157 * Also computes the global bitrate if possible.
2159 static void update_stream_timings(AVFormatContext *ic)
2161 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2162 int64_t duration, duration1, filesize;
2167 start_time = INT64_MAX;
2168 start_time_text = INT64_MAX;
2169 end_time = INT64_MIN;
2170 duration = INT64_MIN;
2171 for(i = 0;i < ic->nb_streams; i++) {
2172 st = ic->streams[i];
2173 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2174 start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
2175 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codec->codec_type == AVMEDIA_TYPE_DATA) {
2176 if (start_time1 < start_time_text)
2177 start_time_text = start_time1;
2179 start_time = FFMIN(start_time, start_time1);
2180 end_time1 = AV_NOPTS_VALUE;
2181 if (st->duration != AV_NOPTS_VALUE) {
2182 end_time1 = start_time1
2183 + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2184 end_time = FFMAX(end_time, end_time1);
2186 for(p = NULL; (p = av_find_program_from_stream(ic, p, i)); ){
2187 if(p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2188 p->start_time = start_time1;
2189 if(p->end_time < end_time1)
2190 p->end_time = end_time1;
2193 if (st->duration != AV_NOPTS_VALUE) {
2194 duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
2195 duration = FFMAX(duration, duration1);
2198 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2199 start_time = start_time_text;
2200 else if(start_time > start_time_text)
2201 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2203 if (start_time != INT64_MAX) {
2204 ic->start_time = start_time;
2205 if (end_time != INT64_MIN) {
2206 if (ic->nb_programs) {
2207 for (i=0; i<ic->nb_programs; i++) {
2208 p = ic->programs[i];
2209 if(p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2210 duration = FFMAX(duration, p->end_time - p->start_time);
2213 duration = FFMAX(duration, end_time - start_time);
2216 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2217 ic->duration = duration;
2219 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2220 /* compute the bitrate */
2221 double bitrate = (double)filesize * 8.0 * AV_TIME_BASE /
2222 (double)ic->duration;
2223 if (bitrate >= 0 && bitrate <= INT_MAX)
2224 ic->bit_rate = bitrate;
2228 static void fill_all_stream_timings(AVFormatContext *ic)
2233 update_stream_timings(ic);
2234 for(i = 0;i < ic->nb_streams; i++) {
2235 st = ic->streams[i];
2236 if (st->start_time == AV_NOPTS_VALUE) {
2237 if(ic->start_time != AV_NOPTS_VALUE)
2238 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
2239 if(ic->duration != AV_NOPTS_VALUE)
2240 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
2245 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2247 int64_t filesize, duration;
2248 int i, show_warning = 0;
2251 /* if bit_rate is already set, we believe it */
2252 if (ic->bit_rate <= 0) {
2254 for(i=0;i<ic->nb_streams;i++) {
2255 st = ic->streams[i];
2256 if (st->codec->bit_rate > 0) {
2257 if (INT_MAX - st->codec->bit_rate < bit_rate) {
2261 bit_rate += st->codec->bit_rate;
2264 ic->bit_rate = bit_rate;
2267 /* if duration is already set, we believe it */
2268 if (ic->duration == AV_NOPTS_VALUE &&
2269 ic->bit_rate != 0) {
2270 filesize = ic->pb ? avio_size(ic->pb) : 0;
2272 for(i = 0; i < ic->nb_streams; i++) {
2273 st = ic->streams[i];
2274 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2275 && st->duration == AV_NOPTS_VALUE) {
2276 duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
2277 st->duration = duration;
2284 av_log(ic, AV_LOG_WARNING, "Estimating duration from bitrate, this may be inaccurate\n");
2287 #define DURATION_MAX_READ_SIZE 250000LL
2288 #define DURATION_MAX_RETRY 4
2290 /* only usable for MPEG-PS streams */
2291 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2293 AVPacket pkt1, *pkt = &pkt1;
2295 int read_size, i, ret;
2297 int64_t filesize, offset, duration;
2300 /* flush packet queue */
2301 flush_packet_queue(ic);
2303 for (i=0; i<ic->nb_streams; i++) {
2304 st = ic->streams[i];
2305 if (st->start_time == AV_NOPTS_VALUE && st->first_dts == AV_NOPTS_VALUE)
2306 av_log(st->codec, AV_LOG_WARNING, "start time is not set in estimate_timings_from_pts\n");
2309 av_parser_close(st->parser);
2314 /* estimate the end time (duration) */
2315 /* XXX: may need to support wrapping */
2316 filesize = ic->pb ? avio_size(ic->pb) : 0;
2317 end_time = AV_NOPTS_VALUE;
2319 offset = filesize - (DURATION_MAX_READ_SIZE<<retry);
2323 avio_seek(ic->pb, offset, SEEK_SET);
2326 if (read_size >= DURATION_MAX_READ_SIZE<<(FFMAX(retry-1,0)))
2330 ret = ff_read_packet(ic, pkt);
2331 } while(ret == AVERROR(EAGAIN));
2334 read_size += pkt->size;
2335 st = ic->streams[pkt->stream_index];
2336 if (pkt->pts != AV_NOPTS_VALUE &&
2337 (st->start_time != AV_NOPTS_VALUE ||
2338 st->first_dts != AV_NOPTS_VALUE)) {
2339 duration = end_time = pkt->pts;
2340 if (st->start_time != AV_NOPTS_VALUE)
2341 duration -= st->start_time;
2343 duration -= st->first_dts;
2345 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<=0 ||
2346 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2347 st->duration = duration;
2348 st->info->last_duration = duration;
2351 av_free_packet(pkt);
2353 }while( end_time==AV_NOPTS_VALUE
2354 && filesize > (DURATION_MAX_READ_SIZE<<retry)
2355 && ++retry <= DURATION_MAX_RETRY);
2357 fill_all_stream_timings(ic);
2359 avio_seek(ic->pb, old_offset, SEEK_SET);
2360 for (i=0; i<ic->nb_streams; i++) {
2362 st->cur_dts= st->first_dts;
2363 st->last_IP_pts = AV_NOPTS_VALUE;
2367 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2371 /* get the file size, if possible */
2372 if (ic->iformat->flags & AVFMT_NOFILE) {
2375 file_size = avio_size(ic->pb);
2376 file_size = FFMAX(0, file_size);
2379 if ((!strcmp(ic->iformat->name, "mpeg") ||
2380 !strcmp(ic->iformat->name, "mpegts")) &&
2381 file_size && ic->pb->seekable) {
2382 /* get accurate estimate from the PTSes */
2383 estimate_timings_from_pts(ic, old_offset);
2384 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2385 } else if (has_duration(ic)) {
2386 /* at least one component has timings - we use them for all
2388 fill_all_stream_timings(ic);
2389 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2391 /* less precise: use bitrate info */
2392 estimate_timings_from_bit_rate(ic);
2393 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2395 update_stream_timings(ic);
2399 AVStream av_unused *st;
2400 for(i = 0;i < ic->nb_streams; i++) {
2401 st = ic->streams[i];
2402 av_dlog(ic, "%d: start_time: %0.3f duration: %0.3f\n", i,
2403 (double) st->start_time / AV_TIME_BASE,
2404 (double) st->duration / AV_TIME_BASE);
2406 av_dlog(ic, "stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
2407 (double) ic->start_time / AV_TIME_BASE,
2408 (double) ic->duration / AV_TIME_BASE,
2409 ic->bit_rate / 1000);
2413 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2415 AVCodecContext *avctx = st->codec;
2417 #define FAIL(errmsg) do { \
2419 *errmsg_ptr = errmsg; \
2423 switch (avctx->codec_type) {
2424 case AVMEDIA_TYPE_AUDIO:
2425 if (!avctx->frame_size && determinable_frame_size(avctx))
2426 FAIL("unspecified frame size");
2427 if (st->info->found_decoder >= 0 && avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2428 FAIL("unspecified sample format");
2429 if (!avctx->sample_rate)
2430 FAIL("unspecified sample rate");
2431 if (!avctx->channels)
2432 FAIL("unspecified number of channels");
2433 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2434 FAIL("no decodable DTS frames");
2436 case AVMEDIA_TYPE_VIDEO:
2438 FAIL("unspecified size");
2439 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2440 FAIL("unspecified pixel format");
2441 if (st->codec->codec_id == AV_CODEC_ID_RV30 || st->codec->codec_id == AV_CODEC_ID_RV40)
2442 if (!st->sample_aspect_ratio.num && !st->codec->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2443 FAIL("no frame in rv30/40 and no sar");
2445 case AVMEDIA_TYPE_SUBTITLE:
2446 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2447 FAIL("unspecified size");
2449 case AVMEDIA_TYPE_DATA:
2450 if(avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2453 if (avctx->codec_id == AV_CODEC_ID_NONE)
2454 FAIL("unknown codec");
2458 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2459 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt, AVDictionary **options)
2461 const AVCodec *codec;
2462 int got_picture = 1, ret = 0;
2463 AVFrame *frame = av_frame_alloc();
2464 AVSubtitle subtitle;
2465 AVPacket pkt = *avpkt;
2468 return AVERROR(ENOMEM);
2470 if (!avcodec_is_open(st->codec) && !st->info->found_decoder) {
2471 AVDictionary *thread_opt = NULL;
2473 codec = find_decoder(s, st, st->codec->codec_id);
2476 st->info->found_decoder = -1;
2481 /* force thread count to 1 since the h264 decoder will not extract SPS
2482 * and PPS to extradata during multi-threaded decoding */
2483 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2484 ret = avcodec_open2(st->codec, codec, options ? options : &thread_opt);
2486 av_dict_free(&thread_opt);
2488 st->info->found_decoder = -1;
2491 st->info->found_decoder = 1;
2492 } else if (!st->info->found_decoder)
2493 st->info->found_decoder = 1;
2495 if (st->info->found_decoder < 0) {
2500 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2502 (!has_codec_parameters(st, NULL) ||
2503 !has_decode_delay_been_guessed(st) ||
2504 (!st->codec_info_nb_frames && st->codec->codec->capabilities & CODEC_CAP_CHANNEL_CONF))) {
2506 avcodec_get_frame_defaults(frame);
2507 switch(st->codec->codec_type) {
2508 case AVMEDIA_TYPE_VIDEO:
2509 ret = avcodec_decode_video2(st->codec, frame,
2510 &got_picture, &pkt);
2512 case AVMEDIA_TYPE_AUDIO:
2513 ret = avcodec_decode_audio4(st->codec, frame, &got_picture, &pkt);
2515 case AVMEDIA_TYPE_SUBTITLE:
2516 ret = avcodec_decode_subtitle2(st->codec, &subtitle,
2517 &got_picture, &pkt);
2525 st->nb_decoded_frames++;
2532 if(!pkt.data && !got_picture)
2536 av_frame_free(&frame);
2540 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2542 while (tags->id != AV_CODEC_ID_NONE) {
2550 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2553 for(i=0; tags[i].id != AV_CODEC_ID_NONE;i++) {
2554 if(tag == tags[i].tag)
2557 for(i=0; tags[i].id != AV_CODEC_ID_NONE; i++) {
2558 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2561 return AV_CODEC_ID_NONE;
2564 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2568 case 32: return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2569 case 64: return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2570 default: return AV_CODEC_ID_NONE;
2575 if (sflags & (1 << (bps - 1))) {
2577 case 1: return AV_CODEC_ID_PCM_S8;
2578 case 2: return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2579 case 3: return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2580 case 4: return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2581 default: return AV_CODEC_ID_NONE;
2585 case 1: return AV_CODEC_ID_PCM_U8;
2586 case 2: return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2587 case 3: return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2588 case 4: return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2589 default: return AV_CODEC_ID_NONE;
2595 unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum AVCodecID id)
2598 if (!av_codec_get_tag2(tags, id, &tag))
2603 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
2607 for(i=0; tags && tags[i]; i++){
2608 const AVCodecTag *codec_tags = tags[i];
2609 while (codec_tags->id != AV_CODEC_ID_NONE) {
2610 if (codec_tags->id == id) {
2611 *tag = codec_tags->tag;
2620 enum AVCodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
2623 for(i=0; tags && tags[i]; i++){
2624 enum AVCodecID id= ff_codec_get_id(tags[i], tag);
2625 if(id!=AV_CODEC_ID_NONE) return id;
2627 return AV_CODEC_ID_NONE;
2630 static void compute_chapters_end(AVFormatContext *s)
2633 int64_t max_time = s->duration + ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
2635 for (i = 0; i < s->nb_chapters; i++)
2636 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
2637 AVChapter *ch = s->chapters[i];
2638 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q, ch->time_base)
2641 for (j = 0; j < s->nb_chapters; j++) {
2642 AVChapter *ch1 = s->chapters[j];
2643 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base, ch->time_base);
2644 if (j != i && next_start > ch->start && next_start < end)
2647 ch->end = (end == INT64_MAX) ? ch->start : end;
2651 static int get_std_framerate(int i){
2652 if(i<60*12) return (i+1)*1001;
2653 else return ((const int[]){24,30,60,12,15,48})[i-60*12]*1000*12;
2657 * Is the time base unreliable.
2658 * This is a heuristic to balance between quick acceptance of the values in
2659 * the headers vs. some extra checks.
2660 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
2661 * MPEG-2 commonly misuses field repeat flags to store different framerates.
2662 * And there are "variable" fps files this needs to detect as well.
2664 static int tb_unreliable(AVCodecContext *c){
2665 if( c->time_base.den >= 101L*c->time_base.num
2666 || c->time_base.den < 5L*c->time_base.num
2667 /* || c->codec_tag == AV_RL32("DIVX")
2668 || c->codec_tag == AV_RL32("XVID")*/
2669 || c->codec_tag == AV_RL32("mp4v")
2670 || c->codec_id == AV_CODEC_ID_MPEG2VIDEO
2671 || c->codec_id == AV_CODEC_ID_H264
2677 #if FF_API_FORMAT_PARAMETERS
2678 int av_find_stream_info(AVFormatContext *ic)
2680 return avformat_find_stream_info(ic, NULL);
2684 int ff_alloc_extradata(AVCodecContext *avctx, int size)
2688 if (size < 0 || size >= INT32_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
2689 avctx->extradata_size = 0;
2690 return AVERROR(EINVAL);
2692 avctx->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
2693 if (avctx->extradata) {
2694 memset(avctx->extradata + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
2695 avctx->extradata_size = size;
2698 avctx->extradata_size = 0;
2699 ret = AVERROR(ENOMEM);
2704 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
2707 int64_t last = st->info->last_dts;
2709 if( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
2710 && ts - (uint64_t)last < INT64_MAX){
2711 double dts= (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
2712 int64_t duration= ts - last;
2714 if (!st->info->duration_error)
2715 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
2716 if (!st->info->duration_error)
2717 return AVERROR(ENOMEM);
2719 // if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2720 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
2721 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2722 if (st->info->duration_error[0][1][i] < 1e10) {
2723 int framerate= get_std_framerate(i);
2724 double sdts= dts*framerate/(1001*12);
2726 int64_t ticks= llrint(sdts+j*0.5);
2727 double error= sdts - ticks + j*0.5;
2728 st->info->duration_error[j][0][i] += error;
2729 st->info->duration_error[j][1][i] += error*error;
2733 st->info->duration_count++;
2735 if (st->info->duration_count % 10 == 0) {
2736 int n = st->info->duration_count;
2737 for (i=0; i<MAX_STD_TIMEBASES; i++) {
2738 if (st->info->duration_error[0][1][i] < 1e10) {
2739 double a0 = st->info->duration_error[0][0][i] / n;
2740 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
2741 double a1 = st->info->duration_error[1][0][i] / n;
2742 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
2743 if (error0 > 0.04 && error1 > 0.04) {
2744 st->info->duration_error[0][1][i] = 2e10;
2745 st->info->duration_error[1][1][i] = 2e10;
2751 // ignore the first 4 values, they might have some random jitter
2752 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
2753 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
2755 if (ts != AV_NOPTS_VALUE)
2756 st->info->last_dts = ts;
2761 void ff_rfps_calculate(AVFormatContext *ic)
2765 for (i = 0; i<ic->nb_streams; i++) {
2766 AVStream *st = ic->streams[i];
2768 if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO)
2770 // the check for tb_unreliable() is not completely correct, since this is not about handling
2771 // a unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
2772 // ipmovie.c produces.
2773 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)
2774 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);
2775 if (st->info->duration_count>1 && !st->r_frame_rate.num
2776 && tb_unreliable(st->codec)) {
2778 double best_error= 0.01;
2780 for (j=0; j<MAX_STD_TIMEBASES; j++) {
2783 if(st->info->codec_info_duration && st->info->codec_info_duration*av_q2d(st->time_base) < (1001*12.0)/get_std_framerate(j))
2785 if(!st->info->codec_info_duration && 1.0 < (1001*12.0)/get_std_framerate(j))
2788 int n= st->info->duration_count;
2789 double a= st->info->duration_error[k][0][j] / n;
2790 double error= st->info->duration_error[k][1][j]/n - a*a;
2792 if(error < best_error && best_error> 0.000000001){
2794 num = get_std_framerate(j);
2797 av_log(NULL, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
2800 // do not increase frame rate by more than 1 % in order to match a standard rate.
2801 if (num && (!st->r_frame_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(st->r_frame_rate)))
2802 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
2805 av_freep(&st->info->duration_error);
2806 st->info->last_dts = AV_NOPTS_VALUE;
2807 st->info->duration_count = 0;
2811 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
2813 int i, count, ret = 0, j;
2816 AVPacket pkt1, *pkt;
2817 int64_t old_offset = avio_tell(ic->pb);
2818 int orig_nb_streams = ic->nb_streams; // new streams might appear, no options for those
2819 int flush_codecs = ic->probesize > 0;
2822 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
2823 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
2825 for(i=0;i<ic->nb_streams;i++) {
2826 const AVCodec *codec;
2827 AVDictionary *thread_opt = NULL;
2828 st = ic->streams[i];
2830 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2831 st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2832 /* if(!st->time_base.num)
2834 if(!st->codec->time_base.num)
2835 st->codec->time_base= st->time_base;
2837 //only for the split stuff
2838 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE)) {
2839 st->parser = av_parser_init(st->codec->codec_id);
2841 if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
2842 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
2843 } else if(st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
2844 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
2846 } else if (st->need_parsing) {
2847 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
2848 "%s, packets or times may be invalid.\n",
2849 avcodec_get_name(st->codec->codec_id));
2852 codec = find_decoder(ic, st, st->codec->codec_id);
2854 /* force thread count to 1 since the h264 decoder will not extract SPS
2855 * and PPS to extradata during multi-threaded decoding */
2856 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
2858 /* Ensure that subtitle_header is properly set. */
2859 if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
2860 && codec && !st->codec->codec) {
2861 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2862 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2865 //try to just open decoders, in case this is enough to get parameters
2866 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
2867 if (codec && !st->codec->codec)
2868 if (avcodec_open2(st->codec, codec, options ? &options[i] : &thread_opt) < 0)
2869 av_log(ic, AV_LOG_WARNING, "Failed to open codec in av_find_stream_info\n");
2872 av_dict_free(&thread_opt);
2875 for (i=0; i<ic->nb_streams; i++) {
2876 #if FF_API_R_FRAME_RATE
2877 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
2879 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
2880 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
2886 if (ff_check_interrupt(&ic->interrupt_callback)){
2888 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
2892 /* check if one codec still needs to be handled */
2893 for(i=0;i<ic->nb_streams;i++) {
2894 int fps_analyze_framecount = 20;
2896 st = ic->streams[i];
2897 if (!has_codec_parameters(st, NULL))
2899 /* if the timebase is coarse (like the usual millisecond precision
2900 of mkv), we need to analyze more frames to reliably arrive at
2902 if (av_q2d(st->time_base) > 0.0005)
2903 fps_analyze_framecount *= 2;
2904 if (ic->fps_probe_size >= 0)
2905 fps_analyze_framecount = ic->fps_probe_size;
2906 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
2907 fps_analyze_framecount = 0;
2908 /* variable fps and no guess at the real fps */
2909 if( tb_unreliable(st->codec) && !(st->r_frame_rate.num && st->avg_frame_rate.num)
2910 && st->info->duration_count < fps_analyze_framecount
2911 && st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2913 if(st->parser && st->parser->parser->split && !st->codec->extradata)
2915 if (st->first_dts == AV_NOPTS_VALUE &&
2916 (st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2917 st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
2920 if (i == ic->nb_streams) {
2921 /* NOTE: if the format has no header, then we need to read
2922 some packets to get most of the streams, so we cannot
2924 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
2925 /* if we found the info for all the codecs, we can stop */
2927 av_log(ic, AV_LOG_DEBUG, "All info found\n");
2932 /* we did not get all the codec info, but we read too much data */
2933 if (read_size >= ic->probesize) {
2935 av_log(ic, AV_LOG_DEBUG, "Probe buffer size limit of %d bytes reached\n", ic->probesize);
2936 for (i = 0; i < ic->nb_streams; i++)
2937 if (!ic->streams[i]->r_frame_rate.num &&
2938 ic->streams[i]->info->duration_count <= 1 &&
2939 strcmp(ic->iformat->name, "image2"))
2940 av_log(ic, AV_LOG_WARNING,
2941 "Stream #%d: not enough frames to estimate rate; "
2942 "consider increasing probesize\n", i);
2946 /* NOTE: a new stream can be added there if no header in file
2947 (AVFMTCTX_NOHEADER) */
2948 ret = read_frame_internal(ic, &pkt1);
2949 if (ret == AVERROR(EAGAIN))
2957 if (ic->flags & AVFMT_FLAG_NOBUFFER)
2958 free_packet_buffer(&ic->packet_buffer, &ic->packet_buffer_end);
2960 pkt = add_to_pktbuf(&ic->packet_buffer, &pkt1,
2961 &ic->packet_buffer_end);
2963 ret = AVERROR(ENOMEM);
2964 goto find_stream_info_err;
2966 if ((ret = av_dup_packet(pkt)) < 0)
2967 goto find_stream_info_err;
2970 st = ic->streams[pkt->stream_index];
2971 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2972 read_size += pkt->size;
2974 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
2975 /* check for non-increasing dts */
2976 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2977 st->info->fps_last_dts >= pkt->dts) {
2978 av_log(ic, AV_LOG_DEBUG, "Non-increasing DTS in stream %d: "
2979 "packet %d with DTS %"PRId64", packet %d with DTS "
2980 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2981 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2982 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2984 /* check for a discontinuity in dts - if the difference in dts
2985 * is more than 1000 times the average packet duration in the sequence,
2986 * we treat it as a discontinuity */
2987 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
2988 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
2989 (pkt->dts - st->info->fps_last_dts) / 1000 >
2990 (st->info->fps_last_dts - st->info->fps_first_dts) / (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
2991 av_log(ic, AV_LOG_WARNING, "DTS discontinuity in stream %d: "
2992 "packet %d with DTS %"PRId64", packet %d with DTS "
2993 "%"PRId64"\n", st->index, st->info->fps_last_dts_idx,
2994 st->info->fps_last_dts, st->codec_info_nb_frames, pkt->dts);
2995 st->info->fps_first_dts = st->info->fps_last_dts = AV_NOPTS_VALUE;
2998 /* update stored dts values */
2999 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3000 st->info->fps_first_dts = pkt->dts;
3001 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3003 st->info->fps_last_dts = pkt->dts;
3004 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3006 if (st->codec_info_nb_frames>1) {
3008 if (st->time_base.den > 0)
3009 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3010 if (st->avg_frame_rate.num > 0)
3011 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3014 && st->codec_info_nb_frames>30
3015 && st->info->fps_first_dts != AV_NOPTS_VALUE
3016 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3017 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3019 if (t >= ic->max_analyze_duration) {
3020 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
3023 if (pkt->duration) {
3024 st->info->codec_info_duration += pkt->duration;
3025 st->info->codec_info_duration_fields += st->parser && st->need_parsing && st->codec->ticks_per_frame==2 ? st->parser->repeat_pict + 1 : 2;
3028 #if FF_API_R_FRAME_RATE
3029 ff_rfps_add_frame(ic, st, pkt->dts);
3031 if(st->parser && st->parser->parser->split && !st->codec->extradata){
3032 int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
3033 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3034 if (ff_alloc_extradata(st->codec, i))
3035 return AVERROR(ENOMEM);
3036 memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
3040 /* if still no information, we try to open the codec and to
3041 decompress the frame. We try to avoid that in most cases as
3042 it takes longer and uses more memory. For MPEG-4, we need to
3043 decompress for QuickTime.
3045 If CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3046 least one frame of codec data, this makes sure the codec initializes
3047 the channel configuration and does not only trust the values from the container.
3049 try_decode_frame(ic, st, pkt, (options && i < orig_nb_streams ) ? &options[i] : NULL);
3051 st->codec_info_nb_frames++;
3056 AVPacket empty_pkt = { 0 };
3058 av_init_packet(&empty_pkt);
3060 for(i=0;i<ic->nb_streams;i++) {
3062 st = ic->streams[i];
3064 /* flush the decoders */
3065 if (st->info->found_decoder == 1) {
3067 err = try_decode_frame(ic, st, &empty_pkt,
3068 (options && i < orig_nb_streams) ?
3069 &options[i] : NULL);
3070 } while (err > 0 && !has_codec_parameters(st, NULL));
3073 av_log(ic, AV_LOG_INFO,
3074 "decoding for stream %d failed\n", st->index);
3080 // close codecs which were opened in try_decode_frame()
3081 for(i=0;i<ic->nb_streams;i++) {
3082 st = ic->streams[i];
3083 avcodec_close(st->codec);
3086 ff_rfps_calculate(ic);
3088 for(i=0;i<ic->nb_streams;i++) {
3089 st = ic->streams[i];
3090 if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
3091 if(st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample){
3092 uint32_t tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
3093 if (avpriv_find_pix_fmt(ff_raw_pix_fmt_tags, tag) == st->codec->pix_fmt)
3094 st->codec->codec_tag= tag;
3097 /* estimate average framerate if not set by demuxer */
3098 if (st->info->codec_info_duration_fields && !st->avg_frame_rate.num && st->info->codec_info_duration) {
3100 double best_error = 0.01;
3102 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3103 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3104 st->info->codec_info_duration < 0)
3106 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3107 st->info->codec_info_duration_fields*(int64_t)st->time_base.den,
3108 st->info->codec_info_duration*2*(int64_t)st->time_base.num, 60000);
3110 /* round guessed framerate to a "standard" framerate if it's
3111 * within 1% of the original estimate*/
3112 for (j = 1; j < MAX_STD_TIMEBASES; j++) {
3113 AVRational std_fps = { get_std_framerate(j), 12*1001 };
3114 double error = fabs(av_q2d(st->avg_frame_rate) / av_q2d(std_fps) - 1);
3116 if (error < best_error) {
3118 best_fps = std_fps.num;
3122 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3123 best_fps, 12*1001, INT_MAX);
3127 if (!st->r_frame_rate.num){
3128 if( st->codec->time_base.den * (int64_t)st->time_base.num
3129 <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
3130 st->r_frame_rate.num = st->codec->time_base.den;
3131 st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
3133 st->r_frame_rate.num = st->time_base.den;
3134 st->r_frame_rate.den = st->time_base.num;
3137 }else if(st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
3138 if(!st->codec->bits_per_coded_sample)
3139 st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
3140 // set stream disposition based on audio service type
3141 switch (st->codec->audio_service_type) {
3142 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3143 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS; break;
3144 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3145 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED; break;
3146 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3147 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED; break;
3148 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3149 st->disposition = AV_DISPOSITION_COMMENT; break;
3150 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3151 st->disposition = AV_DISPOSITION_KARAOKE; break;
3157 estimate_timings(ic, old_offset);
3159 if (ret >= 0 && ic->nb_streams)
3160 ret = -1; /* we could not have all the codec parameters before EOF */
3161 for(i=0;i<ic->nb_streams;i++) {
3163 st = ic->streams[i];
3164 if (!has_codec_parameters(st, &errmsg)) {
3166 avcodec_string(buf, sizeof(buf), st->codec, 0);
3167 av_log(ic, AV_LOG_WARNING,
3168 "Could not find codec parameters for stream %d (%s): %s\n"
3169 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3176 compute_chapters_end(ic);
3178 find_stream_info_err:
3179 for (i=0; i < ic->nb_streams; i++) {
3180 st = ic->streams[i];
3181 if (ic->streams[i]->codec && ic->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO)
3182 ic->streams[i]->codec->thread_count = 0;
3184 av_freep(&st->info->duration_error);
3185 av_freep(&ic->streams[i]->info);
3188 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3189 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3193 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3197 for (i = 0; i < ic->nb_programs; i++) {
3198 if (ic->programs[i] == last) {
3202 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3203 if (ic->programs[i]->stream_index[j] == s)
3204 return ic->programs[i];
3210 int av_find_best_stream(AVFormatContext *ic,
3211 enum AVMediaType type,
3212 int wanted_stream_nb,
3214 AVCodec **decoder_ret,
3217 int i, nb_streams = ic->nb_streams;
3218 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3219 unsigned *program = NULL;
3220 AVCodec *decoder = NULL, *best_decoder = NULL;
3222 if (related_stream >= 0 && wanted_stream_nb < 0) {
3223 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3225 program = p->stream_index;
3226 nb_streams = p->nb_stream_indexes;
3229 for (i = 0; i < nb_streams; i++) {
3230 int real_stream_index = program ? program[i] : i;
3231 AVStream *st = ic->streams[real_stream_index];
3232 AVCodecContext *avctx = st->codec;
3233 if (avctx->codec_type != type)
3235 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3237 if (st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED|AV_DISPOSITION_VISUAL_IMPAIRED))
3240 decoder = find_decoder(ic, st, st->codec->codec_id);
3243 ret = AVERROR_DECODER_NOT_FOUND;
3247 count = st->codec_info_nb_frames;
3248 bitrate = avctx->bit_rate;
3249 multiframe = FFMIN(5, count);
3250 if ((best_multiframe > multiframe) ||
3251 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3252 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3255 best_bitrate = bitrate;
3256 best_multiframe = multiframe;
3257 ret = real_stream_index;
3258 best_decoder = decoder;
3259 if (program && i == nb_streams - 1 && ret < 0) {
3261 nb_streams = ic->nb_streams;
3262 i = 0; /* no related stream found, try again with everything */
3266 *decoder_ret = best_decoder;
3270 /*******************************************************/
3272 int av_read_play(AVFormatContext *s)
3274 if (s->iformat->read_play)
3275 return s->iformat->read_play(s);
3277 return avio_pause(s->pb, 0);
3278 return AVERROR(ENOSYS);
3281 int av_read_pause(AVFormatContext *s)
3283 if (s->iformat->read_pause)
3284 return s->iformat->read_pause(s);
3286 return avio_pause(s->pb, 1);
3287 return AVERROR(ENOSYS);
3290 void ff_free_stream(AVFormatContext *s, AVStream *st){
3291 av_assert0(s->nb_streams>0);
3292 av_assert0(s->streams[ s->nb_streams-1 ] == st);
3295 av_parser_close(st->parser);
3297 if (st->attached_pic.data)
3298 av_free_packet(&st->attached_pic);
3299 av_dict_free(&st->metadata);
3300 av_freep(&st->probe_data.buf);
3301 av_freep(&st->index_entries);
3302 av_freep(&st->codec->extradata);
3303 av_freep(&st->codec->subtitle_header);
3304 av_freep(&st->codec);
3305 av_freep(&st->priv_data);
3307 av_freep(&st->info->duration_error);
3308 av_freep(&st->info);
3309 av_freep(&s->streams[ --s->nb_streams ]);
3312 void avformat_free_context(AVFormatContext *s)
3320 if (s->iformat && s->iformat->priv_class && s->priv_data)
3321 av_opt_free(s->priv_data);
3323 for(i=s->nb_streams-1; i>=0; i--) {
3324 ff_free_stream(s, s->streams[i]);
3326 for(i=s->nb_programs-1; i>=0; i--) {
3327 av_dict_free(&s->programs[i]->metadata);
3328 av_freep(&s->programs[i]->stream_index);
3329 av_freep(&s->programs[i]);
3331 av_freep(&s->programs);
3332 av_freep(&s->priv_data);
3333 while(s->nb_chapters--) {
3334 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
3335 av_freep(&s->chapters[s->nb_chapters]);
3337 av_freep(&s->chapters);
3338 av_dict_free(&s->metadata);
3339 av_freep(&s->streams);
3343 #if FF_API_CLOSE_INPUT_FILE
3344 void av_close_input_file(AVFormatContext *s)
3346 avformat_close_input(&s);
3350 void avformat_close_input(AVFormatContext **ps)
3361 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
3362 (s->flags & AVFMT_FLAG_CUSTOM_IO))
3365 flush_packet_queue(s);
3368 if (s->iformat->read_close)
3369 s->iformat->read_close(s);
3372 avformat_free_context(s);
3379 #if FF_API_NEW_STREAM
3380 AVStream *av_new_stream(AVFormatContext *s, int id)
3382 AVStream *st = avformat_new_stream(s, NULL);
3389 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
3395 if (s->nb_streams >= INT_MAX/sizeof(*streams))
3397 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
3400 s->streams = streams;
3402 st = av_mallocz(sizeof(AVStream));
3405 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
3409 st->info->last_dts = AV_NOPTS_VALUE;
3411 st->codec = avcodec_alloc_context3(c);
3413 /* no default bitrate if decoding */
3414 st->codec->bit_rate = 0;
3416 st->index = s->nb_streams;
3417 st->start_time = AV_NOPTS_VALUE;
3418 st->duration = AV_NOPTS_VALUE;
3419 /* we set the current DTS to 0 so that formats without any timestamps
3420 but durations get some timestamps, formats with some unknown
3421 timestamps have their first few packets buffered and the
3422 timestamps corrected before they are returned to the user */
3423 st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
3424 st->first_dts = AV_NOPTS_VALUE;
3425 st->probe_packets = MAX_PROBE_PACKETS;
3426 st->pts_wrap_reference = AV_NOPTS_VALUE;
3427 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3429 /* default pts setting is MPEG-like */
3430 avpriv_set_pts_info(st, 33, 1, 90000);
3431 st->last_IP_pts = AV_NOPTS_VALUE;
3432 for(i=0; i<MAX_REORDER_DELAY+1; i++)
3433 st->pts_buffer[i]= AV_NOPTS_VALUE;
3435 st->sample_aspect_ratio = (AVRational){0,1};
3437 #if FF_API_R_FRAME_RATE
3438 st->info->last_dts = AV_NOPTS_VALUE;
3440 st->info->fps_first_dts = AV_NOPTS_VALUE;
3441 st->info->fps_last_dts = AV_NOPTS_VALUE;
3443 s->streams[s->nb_streams++] = st;
3447 AVProgram *av_new_program(AVFormatContext *ac, int id)
3449 AVProgram *program=NULL;
3452 av_dlog(ac, "new_program: id=0x%04x\n", id);
3454 for(i=0; i<ac->nb_programs; i++)
3455 if(ac->programs[i]->id == id)
3456 program = ac->programs[i];
3459 program = av_mallocz(sizeof(AVProgram));
3462 dynarray_add(&ac->programs, &ac->nb_programs, program);
3463 program->discard = AVDISCARD_NONE;
3466 program->pts_wrap_reference = AV_NOPTS_VALUE;
3467 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
3469 program->start_time =
3470 program->end_time = AV_NOPTS_VALUE;
3475 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
3477 AVChapter *chapter = NULL;
3480 for(i=0; i<s->nb_chapters; i++)
3481 if(s->chapters[i]->id == id)
3482 chapter = s->chapters[i];
3485 chapter= av_mallocz(sizeof(AVChapter));
3488 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
3490 av_dict_set(&chapter->metadata, "title", title, 0);
3492 chapter->time_base= time_base;
3493 chapter->start = start;
3499 void ff_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
3502 AVProgram *program=NULL;
3505 if (idx >= ac->nb_streams) {
3506 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
3510 for(i=0; i<ac->nb_programs; i++){
3511 if(ac->programs[i]->id != progid)
3513 program = ac->programs[i];
3514 for(j=0; j<program->nb_stream_indexes; j++)
3515 if(program->stream_index[j] == idx)
3518 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
3521 program->stream_index = tmp;
3522 program->stream_index[program->nb_stream_indexes++] = idx;
3527 static void print_fps(double d, const char *postfix){
3528 uint64_t v= lrintf(d*100);
3529 if (v% 100 ) av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
3530 else if(v%(100*1000)) av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
3531 else av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d/1000, postfix);
3534 static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
3536 if(m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))){
3537 AVDictionaryEntry *tag=NULL;
3539 av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
3540 while((tag=av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) {
3541 if(strcmp("language", tag->key)){
3542 const char *p = tag->value;
3543 av_log(ctx, AV_LOG_INFO, "%s %-16s: ", indent, tag->key);
3546 size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
3547 av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
3548 av_log(ctx, AV_LOG_INFO, "%s", tmp);
3550 if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
3551 if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s %-16s: ", indent, "");
3554 av_log(ctx, AV_LOG_INFO, "\n");
3560 /* "user interface" functions */
3561 static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
3564 int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
3565 AVStream *st = ic->streams[i];
3566 int g = av_gcd(st->time_base.num, st->time_base.den);
3567 AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
3568 avcodec_string(buf, sizeof(buf), st->codec, is_output);
3569 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d", index, i);
3570 /* the pid is an important information, so we display it */
3571 /* XXX: add a generic system */
3572 if (flags & AVFMT_SHOW_IDS)
3573 av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
3575 av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
3576 av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames, st->time_base.num/g, st->time_base.den/g);
3577 av_log(NULL, AV_LOG_INFO, ": %s", buf);
3578 if (st->sample_aspect_ratio.num && // default
3579 av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
3580 AVRational display_aspect_ratio;
3581 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3582 st->codec->width*st->sample_aspect_ratio.num,
3583 st->codec->height*st->sample_aspect_ratio.den,
3585 av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
3586 st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
3587 display_aspect_ratio.num, display_aspect_ratio.den);
3589 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
3590 if(st->avg_frame_rate.den && st->avg_frame_rate.num)
3591 print_fps(av_q2d(st->avg_frame_rate), "fps");
3592 #if FF_API_R_FRAME_RATE
3593 if(st->r_frame_rate.den && st->r_frame_rate.num)
3594 print_fps(av_q2d(st->r_frame_rate), "tbr");
3596 if(st->time_base.den && st->time_base.num)
3597 print_fps(1/av_q2d(st->time_base), "tbn");
3598 if(st->codec->time_base.den && st->codec->time_base.num)
3599 print_fps(1/av_q2d(st->codec->time_base), "tbc");
3601 if (st->disposition & AV_DISPOSITION_DEFAULT)
3602 av_log(NULL, AV_LOG_INFO, " (default)");
3603 if (st->disposition & AV_DISPOSITION_DUB)
3604 av_log(NULL, AV_LOG_INFO, " (dub)");
3605 if (st->disposition & AV_DISPOSITION_ORIGINAL)
3606 av_log(NULL, AV_LOG_INFO, " (original)");
3607 if (st->disposition & AV_DISPOSITION_COMMENT)
3608 av_log(NULL, AV_LOG_INFO, " (comment)");
3609 if (st->disposition & AV_DISPOSITION_LYRICS)
3610 av_log(NULL, AV_LOG_INFO, " (lyrics)");
3611 if (st->disposition & AV_DISPOSITION_KARAOKE)
3612 av_log(NULL, AV_LOG_INFO, " (karaoke)");
3613 if (st->disposition & AV_DISPOSITION_FORCED)
3614 av_log(NULL, AV_LOG_INFO, " (forced)");
3615 if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
3616 av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
3617 if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
3618 av_log(NULL, AV_LOG_INFO, " (visual impaired)");
3619 if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
3620 av_log(NULL, AV_LOG_INFO, " (clean effects)");
3621 av_log(NULL, AV_LOG_INFO, "\n");
3622 dump_metadata(NULL, st->metadata, " ");
3625 void av_dump_format(AVFormatContext *ic,
3631 uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
3632 if (ic->nb_streams && !printed)
3635 av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
3636 is_output ? "Output" : "Input",
3638 is_output ? ic->oformat->name : ic->iformat->name,
3639 is_output ? "to" : "from", url);
3640 dump_metadata(NULL, ic->metadata, " ");
3642 av_log(NULL, AV_LOG_INFO, " Duration: ");
3643 if (ic->duration != AV_NOPTS_VALUE) {
3644 int hours, mins, secs, us;
3645 int64_t duration = ic->duration + 5000;
3646 secs = duration / AV_TIME_BASE;
3647 us = duration % AV_TIME_BASE;
3652 av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
3653 (100 * us) / AV_TIME_BASE);
3655 av_log(NULL, AV_LOG_INFO, "N/A");
3657 if (ic->start_time != AV_NOPTS_VALUE) {
3659 av_log(NULL, AV_LOG_INFO, ", start: ");
3660 secs = ic->start_time / AV_TIME_BASE;
3661 us = abs(ic->start_time % AV_TIME_BASE);
3662 av_log(NULL, AV_LOG_INFO, "%d.%06d",
3663 secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
3665 av_log(NULL, AV_LOG_INFO, ", bitrate: ");
3667 av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
3669 av_log(NULL, AV_LOG_INFO, "N/A");
3671 av_log(NULL, AV_LOG_INFO, "\n");
3673 for (i = 0; i < ic->nb_chapters; i++) {
3674 AVChapter *ch = ic->chapters[i];
3675 av_log(NULL, AV_LOG_INFO, " Chapter #%d.%d: ", index, i);
3676 av_log(NULL, AV_LOG_INFO, "start %f, ", ch->start * av_q2d(ch->time_base));
3677 av_log(NULL, AV_LOG_INFO, "end %f\n", ch->end * av_q2d(ch->time_base));
3679 dump_metadata(NULL, ch->metadata, " ");
3681 if(ic->nb_programs) {
3682 int j, k, total = 0;
3683 for(j=0; j<ic->nb_programs; j++) {
3684 AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
3686 av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
3687 name ? name->value : "");
3688 dump_metadata(NULL, ic->programs[j]->metadata, " ");
3689 for(k=0; k<ic->programs[j]->nb_stream_indexes; k++) {
3690 dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
3691 printed[ic->programs[j]->stream_index[k]] = 1;
3693 total += ic->programs[j]->nb_stream_indexes;
3695 if (total < ic->nb_streams)
3696 av_log(NULL, AV_LOG_INFO, " No Program\n");
3698 for(i=0;i<ic->nb_streams;i++)
3700 dump_stream_format(ic, i, index, is_output);
3705 uint64_t ff_ntp_time(void)
3707 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
3710 int av_get_frame_filename(char *buf, int buf_size,
3711 const char *path, int number)
3714 char *q, buf1[20], c;
3715 int nd, len, percentd_found;
3727 while (av_isdigit(*p)) {
3728 nd = nd * 10 + *p++ - '0';
3731 } while (av_isdigit(c));
3740 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
3742 if ((q - buf + len) > buf_size - 1)
3744 memcpy(q, buf1, len);
3752 if ((q - buf) < buf_size - 1)
3756 if (!percentd_found)
3765 static void hex_dump_internal(void *avcl, FILE *f, int level,
3766 const uint8_t *buf, int size)
3769 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3771 for(i=0;i<size;i+=16) {
3778 PRINT(" %02x", buf[i+j]);
3783 for(j=0;j<len;j++) {
3785 if (c < ' ' || c > '~')
3794 void av_hex_dump(FILE *f, const uint8_t *buf, int size)
3796 hex_dump_internal(NULL, f, 0, buf, size);
3799 void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
3801 hex_dump_internal(avcl, NULL, level, buf, size);
3804 static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
3806 #define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
3807 PRINT("stream #%d:\n", pkt->stream_index);
3808 PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
3809 PRINT(" duration=%0.3f\n", pkt->duration * av_q2d(time_base));
3810 /* DTS is _always_ valid after av_read_frame() */
3812 if (pkt->dts == AV_NOPTS_VALUE)
3815 PRINT("%0.3f", pkt->dts * av_q2d(time_base));
3816 /* PTS may not be known if B-frames are present. */
3818 if (pkt->pts == AV_NOPTS_VALUE)
3821 PRINT("%0.3f", pkt->pts * av_q2d(time_base));
3823 PRINT(" size=%d\n", pkt->size);
3826 av_hex_dump(f, pkt->data, pkt->size);
3829 void av_pkt_dump2(FILE *f, AVPacket *pkt, int dump_payload, AVStream *st)
3831 pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
3834 void av_pkt_dump_log2(void *avcl, int level, AVPacket *pkt, int dump_payload,
3837 pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
3840 void av_url_split(char *proto, int proto_size,
3841 char *authorization, int authorization_size,
3842 char *hostname, int hostname_size,
3844 char *path, int path_size,
3847 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
3849 if (port_ptr) *port_ptr = -1;
3850 if (proto_size > 0) proto[0] = 0;
3851 if (authorization_size > 0) authorization[0] = 0;
3852 if (hostname_size > 0) hostname[0] = 0;
3853 if (path_size > 0) path[0] = 0;
3855 /* parse protocol */
3856 if ((p = strchr(url, ':'))) {
3857 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
3862 /* no protocol means plain filename */
3863 av_strlcpy(path, url, path_size);
3867 /* separate path from hostname */
3868 ls = strchr(p, '/');
3869 ls2 = strchr(p, '?');
3873 ls = FFMIN(ls, ls2);
3875 av_strlcpy(path, ls, path_size);
3877 ls = &p[strlen(p)]; // XXX
3879 /* the rest is hostname, use that to parse auth/port */
3881 /* authorization (user[:pass]@hostname) */
3883 while ((at = strchr(p, '@')) && at < ls) {
3884 av_strlcpy(authorization, at2,
3885 FFMIN(authorization_size, at + 1 - at2));
3886 p = at + 1; /* skip '@' */
3889 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
3891 av_strlcpy(hostname, p + 1,
3892 FFMIN(hostname_size, brk - p));
3893 if (brk[1] == ':' && port_ptr)
3894 *port_ptr = atoi(brk + 2);
3895 } else if ((col = strchr(p, ':')) && col < ls) {
3896 av_strlcpy(hostname, p,
3897 FFMIN(col + 1 - p, hostname_size));
3898 if (port_ptr) *port_ptr = atoi(col + 1);
3900 av_strlcpy(hostname, p,
3901 FFMIN(ls + 1 - p, hostname_size));
3905 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
3908 static const char hex_table_uc[16] = { '0', '1', '2', '3',
3911 'C', 'D', 'E', 'F' };
3912 static const char hex_table_lc[16] = { '0', '1', '2', '3',
3915 'c', 'd', 'e', 'f' };
3916 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
3918 for(i = 0; i < s; i++) {
3919 buff[i * 2] = hex_table[src[i] >> 4];
3920 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
3926 int ff_hex_to_data(uint8_t *data, const char *p)
3933 p += strspn(p, SPACE_CHARS);
3936 c = av_toupper((unsigned char) *p++);
3937 if (c >= '0' && c <= '9')
3939 else if (c >= 'A' && c <= 'F')
3954 #if FF_API_SET_PTS_INFO
3955 void av_set_pts_info(AVStream *s, int pts_wrap_bits,
3956 unsigned int pts_num, unsigned int pts_den)
3958 avpriv_set_pts_info(s, pts_wrap_bits, pts_num, pts_den);
3962 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
3963 unsigned int pts_num, unsigned int pts_den)
3966 if(av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)){
3967 if(new_tb.num != pts_num)
3968 av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, pts_num/new_tb.num);
3970 av_log(NULL, AV_LOG_WARNING, "st:%d has too large timebase, reducing\n", s->index);
3972 if(new_tb.num <= 0 || new_tb.den <= 0) {
3973 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);
3976 s->time_base = new_tb;
3977 av_codec_set_pkt_timebase(s->codec, new_tb);
3978 s->pts_wrap_bits = pts_wrap_bits;
3981 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
3984 const char *ptr = str;
3986 /* Parse key=value pairs. */
3989 char *dest = NULL, *dest_end;
3990 int key_len, dest_len = 0;
3992 /* Skip whitespace and potential commas. */
3993 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4000 if (!(ptr = strchr(key, '=')))
4003 key_len = ptr - key;
4005 callback_get_buf(context, key, key_len, &dest, &dest_len);
4006 dest_end = dest + dest_len - 1;
4010 while (*ptr && *ptr != '\"') {
4014 if (dest && dest < dest_end)
4018 if (dest && dest < dest_end)
4026 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4027 if (dest && dest < dest_end)
4035 int ff_find_stream_index(AVFormatContext *s, int id)
4038 for (i = 0; i < s->nb_streams; i++) {
4039 if (s->streams[i]->id == id)
4045 int64_t ff_iso8601_to_unix_time(const char *datestr)
4047 struct tm time1 = {0}, time2 = {0};
4049 ret1 = av_small_strptime(datestr, "%Y - %m - %d %H:%M:%S", &time1);
4050 ret2 = av_small_strptime(datestr, "%Y - %m - %dT%H:%M:%S", &time2);
4052 return av_timegm(&time2);
4054 return av_timegm(&time1);
4057 int avformat_query_codec(AVOutputFormat *ofmt, enum AVCodecID codec_id, int std_compliance)
4060 if (ofmt->query_codec)
4061 return ofmt->query_codec(codec_id, std_compliance);
4062 else if (ofmt->codec_tag)
4063 return !!av_codec_get_tag(ofmt->codec_tag, codec_id);
4064 else if (codec_id == ofmt->video_codec || codec_id == ofmt->audio_codec ||
4065 codec_id == ofmt->subtitle_codec)
4068 return AVERROR_PATCHWELCOME;
4071 int avformat_network_init(void)
4075 ff_network_inited_globally = 1;
4076 if ((ret = ff_network_init()) < 0)
4083 int avformat_network_deinit(void)
4092 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4093 uint64_t channel_layout, int32_t sample_rate,
4094 int32_t width, int32_t height)
4100 return AVERROR(EINVAL);
4103 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4105 if (channel_layout) {
4107 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4111 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4113 if (width || height) {
4115 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4117 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4119 return AVERROR(ENOMEM);
4120 bytestream_put_le32(&data, flags);
4122 bytestream_put_le32(&data, channels);
4124 bytestream_put_le64(&data, channel_layout);
4126 bytestream_put_le32(&data, sample_rate);
4127 if (width || height) {
4128 bytestream_put_le32(&data, width);
4129 bytestream_put_le32(&data, height);
4134 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4136 AVRational undef = {0, 1};
4137 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4138 AVRational codec_sample_aspect_ratio = stream && stream->codec ? stream->codec->sample_aspect_ratio : undef;
4139 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4141 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4142 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4143 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4144 stream_sample_aspect_ratio = undef;
4146 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4147 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4148 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4149 frame_sample_aspect_ratio = undef;
4151 if (stream_sample_aspect_ratio.num)
4152 return stream_sample_aspect_ratio;
4154 return frame_sample_aspect_ratio;
4157 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4159 AVRational fr = st->r_frame_rate;
4161 if (st->codec->ticks_per_frame > 1) {
4162 AVRational codec_fr = av_inv_q(st->codec->time_base);
4163 AVRational avg_fr = st->avg_frame_rate;
4164 codec_fr.den *= st->codec->ticks_per_frame;
4165 if ( codec_fr.num > 0 && codec_fr.den > 0 && av_q2d(codec_fr) < av_q2d(fr)*0.7
4166 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1)
4173 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4176 if (*spec <= '9' && *spec >= '0') /* opt:index */
4177 return strtol(spec, NULL, 0) == st->index;
4178 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4179 *spec == 't') { /* opt:[vasdt] */
4180 enum AVMediaType type;
4183 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4184 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4185 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4186 case 'd': type = AVMEDIA_TYPE_DATA; break;
4187 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4188 default: av_assert0(0);
4190 if (type != st->codec->codec_type)
4192 if (*spec++ == ':') { /* possibly followed by :index */
4193 int i, index = strtol(spec, NULL, 0);
4194 for (i = 0; i < s->nb_streams; i++)
4195 if (s->streams[i]->codec->codec_type == type && index-- == 0)
4196 return i == st->index;
4200 } else if (*spec == 'p' && *(spec + 1) == ':') {
4204 prog_id = strtol(spec, &endptr, 0);
4205 for (i = 0; i < s->nb_programs; i++) {
4206 if (s->programs[i]->id != prog_id)
4209 if (*endptr++ == ':') {
4210 int stream_idx = strtol(endptr, NULL, 0);
4211 return stream_idx >= 0 &&
4212 stream_idx < s->programs[i]->nb_stream_indexes &&
4213 st->index == s->programs[i]->stream_index[stream_idx];
4216 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4217 if (st->index == s->programs[i]->stream_index[j])
4221 } else if (*spec == '#') {
4224 sid = strtol(spec + 1, &endptr, 0);
4226 return st->id == sid;
4227 } else if (!*spec) /* empty specifier, matches everything */
4230 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4231 return AVERROR(EINVAL);
4234 int ff_generate_avci_extradata(AVStream *st)
4236 static const uint8_t avci100_1080p_extradata[] = {
4238 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4239 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4240 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4241 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4242 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4243 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4244 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4245 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4246 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4248 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4251 static const uint8_t avci100_1080i_extradata[] = {
4253 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4254 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4255 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4256 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4257 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4258 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4259 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4260 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4261 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4262 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4263 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x00,
4265 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4268 static const uint8_t avci50_1080i_extradata[] = {
4270 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4271 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4272 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4273 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4274 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4275 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4276 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4277 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4278 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4279 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4280 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4282 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4285 static const uint8_t avci100_720p_extradata[] = {
4287 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4288 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4289 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4290 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4291 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4292 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4293 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4294 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4295 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4296 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4298 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4302 const uint8_t *data = NULL;
4305 if (st->codec->width == 1920) {
4306 if (st->codec->field_order == AV_FIELD_PROGRESSIVE) {
4307 data = avci100_1080p_extradata;
4308 size = sizeof(avci100_1080p_extradata);
4310 data = avci100_1080i_extradata;
4311 size = sizeof(avci100_1080i_extradata);
4313 } else if (st->codec->width == 1440) {
4314 data = avci50_1080i_extradata;
4315 size = sizeof(avci50_1080i_extradata);
4316 } else if (st->codec->width == 1280) {
4317 data = avci100_720p_extradata;
4318 size = sizeof(avci100_720p_extradata);
4324 av_freep(&st->codec->extradata);
4325 if (ff_alloc_extradata(st->codec, size))
4326 return AVERROR(ENOMEM);
4327 memcpy(st->codec->extradata, data, size);