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
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/time.h"
36 #include "libavutil/time_internal.h"
37 #include "libavutil/timestamp.h"
39 #include "libavcodec/bytestream.h"
40 #include "libavcodec/internal.h"
41 #include "libavcodec/raw.h"
43 #include "audiointerleave.h"
45 #include "avio_internal.h"
55 #include "libavutil/ffversion.h"
56 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
60 * various utility functions for use within FFmpeg
63 unsigned avformat_version(void)
65 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
66 return LIBAVFORMAT_VERSION_INT;
69 const char *avformat_configuration(void)
71 return FFMPEG_CONFIGURATION;
74 const char *avformat_license(void)
76 #define LICENSE_PREFIX "libavformat license: "
77 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
80 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
82 static int is_relative(int64_t ts) {
83 return ts > (RELATIVE_TS_BASE - (1LL<<48));
87 * Wrap a given time stamp, if there is an indication for an overflow
90 * @param timestamp the time stamp to wrap
91 * @return resulting time stamp
93 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
95 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
96 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
97 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
98 timestamp < st->pts_wrap_reference)
99 return timestamp + (1ULL << st->pts_wrap_bits);
100 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
101 timestamp >= st->pts_wrap_reference)
102 return timestamp - (1ULL << st->pts_wrap_bits);
107 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
108 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
109 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
110 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
111 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
112 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
113 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
114 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
115 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
116 #if FF_API_OLD_OPEN_CALLBACKS
117 FF_DISABLE_DEPRECATION_WARNINGS
118 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
119 FF_ENABLE_DEPRECATION_WARNINGS
122 int64_t av_stream_get_end_pts(const AVStream *st)
125 return st->priv_pts->val;
127 return AV_NOPTS_VALUE;
130 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
135 void av_format_inject_global_side_data(AVFormatContext *s)
138 s->internal->inject_global_side_data = 1;
139 for (i = 0; i < s->nb_streams; i++) {
140 AVStream *st = s->streams[i];
141 st->inject_global_side_data = 1;
145 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
147 av_assert0(!dst->codec_whitelist &&
148 !dst->format_whitelist &&
149 !dst->protocol_whitelist &&
150 !dst->protocol_blacklist);
151 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
152 dst->format_whitelist = av_strdup(src->format_whitelist);
153 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
154 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
155 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
156 || (src-> format_whitelist && !dst-> format_whitelist)
157 || (src->protocol_whitelist && !dst->protocol_whitelist)
158 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
159 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
160 return AVERROR(ENOMEM);
165 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
167 #if FF_API_LAVF_AVCTX
168 FF_DISABLE_DEPRECATION_WARNINGS
169 if (st->codec->codec)
170 return st->codec->codec;
171 FF_ENABLE_DEPRECATION_WARNINGS
174 switch (st->codecpar->codec_type) {
175 case AVMEDIA_TYPE_VIDEO:
176 if (s->video_codec) return s->video_codec;
178 case AVMEDIA_TYPE_AUDIO:
179 if (s->audio_codec) return s->audio_codec;
181 case AVMEDIA_TYPE_SUBTITLE:
182 if (s->subtitle_codec) return s->subtitle_codec;
186 return avcodec_find_decoder(codec_id);
189 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
191 const AVCodec *codec;
193 #if CONFIG_H264_DECODER
194 /* Other parts of the code assume this decoder to be used for h264,
195 * so force it if possible. */
196 if (codec_id == AV_CODEC_ID_H264)
197 return avcodec_find_decoder_by_name("h264");
200 codec = find_decoder(s, st, codec_id);
204 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
205 const AVCodec *probe_codec = NULL;
206 while (probe_codec = av_codec_next(probe_codec)) {
207 if (probe_codec->id == codec_id &&
208 av_codec_is_decoder(probe_codec) &&
209 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
218 int av_format_get_probe_score(const AVFormatContext *s)
220 return s->probe_score;
223 /* an arbitrarily chosen "sane" max packet size -- 50M */
224 #define SANE_CHUNK_SIZE (50000000)
226 int ffio_limit(AVIOContext *s, int size)
228 if (s->maxsize>= 0) {
229 int64_t remaining= s->maxsize - avio_tell(s);
230 if (remaining < size) {
231 int64_t newsize = avio_size(s);
232 if (!s->maxsize || s->maxsize<newsize)
233 s->maxsize = newsize - !newsize;
234 remaining= s->maxsize - avio_tell(s);
235 remaining= FFMAX(remaining, 0);
238 if (s->maxsize>= 0 && remaining+1 < size) {
239 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
246 /* Read the data in sane-sized chunks and append to pkt.
247 * Return the number of bytes read or an error. */
248 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
250 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
251 int orig_size = pkt->size;
255 int prev_size = pkt->size;
258 /* When the caller requests a lot of data, limit it to the amount
259 * left in file or SANE_CHUNK_SIZE when it is not known. */
261 if (read_size > SANE_CHUNK_SIZE/10) {
262 read_size = ffio_limit(s, read_size);
263 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
265 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
268 ret = av_grow_packet(pkt, read_size);
272 ret = avio_read(s, pkt->data + prev_size, read_size);
273 if (ret != read_size) {
274 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
281 pkt->flags |= AV_PKT_FLAG_CORRUPT;
285 av_packet_unref(pkt);
286 return pkt->size > orig_size ? pkt->size - orig_size : ret;
289 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
294 pkt->pos = avio_tell(s);
296 return append_packet_chunked(s, pkt, size);
299 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
302 return av_get_packet(s, pkt, size);
303 return append_packet_chunked(s, pkt, size);
306 int av_filename_number_test(const char *filename)
310 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
313 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
316 static const struct {
319 enum AVMediaType type;
321 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
322 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
323 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
324 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
325 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
326 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
327 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
328 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
329 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
330 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
331 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
332 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
333 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
334 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
338 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
342 av_log(s, AV_LOG_DEBUG,
343 "Probe with size=%d, packets=%d detected %s with score=%d\n",
344 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
346 for (i = 0; fmt_id_type[i].name; i++) {
347 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
348 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
349 st->codecpar->sample_rate)
351 if (st->request_probe > score &&
352 st->codecpar->codec_id != fmt_id_type[i].id)
354 st->codecpar->codec_id = fmt_id_type[i].id;
355 st->codecpar->codec_type = fmt_id_type[i].type;
356 st->internal->need_context_update = 1;
357 #if FF_API_LAVF_AVCTX
358 FF_DISABLE_DEPRECATION_WARNINGS
359 st->codec->codec_type = st->codecpar->codec_type;
360 st->codec->codec_id = st->codecpar->codec_id;
361 FF_ENABLE_DEPRECATION_WARNINGS
370 /************************************************************/
371 /* input media file */
373 int av_demuxer_open(AVFormatContext *ic) {
376 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
377 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
378 return AVERROR(EINVAL);
381 if (ic->iformat->read_header) {
382 err = ic->iformat->read_header(ic);
387 if (ic->pb && !ic->internal->data_offset)
388 ic->internal->data_offset = avio_tell(ic->pb);
393 /* Open input file and probe the format if necessary. */
394 static int init_input(AVFormatContext *s, const char *filename,
395 AVDictionary **options)
398 AVProbeData pd = { filename, NULL, 0 };
399 int score = AVPROBE_SCORE_RETRY;
402 s->flags |= AVFMT_FLAG_CUSTOM_IO;
404 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
405 s, 0, s->format_probesize);
406 else if (s->iformat->flags & AVFMT_NOFILE)
407 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
408 "will be ignored with AVFMT_NOFILE format.\n");
412 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
413 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
416 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
421 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
422 s, 0, s->format_probesize);
425 static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
426 AVPacketList **plast_pktl, int ref)
428 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
432 return AVERROR(ENOMEM);
435 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
444 (*plast_pktl)->next = pktl;
446 *packet_buffer = pktl;
448 /* Add the packet in the buffered packet list. */
453 int avformat_queue_attached_pictures(AVFormatContext *s)
456 for (i = 0; i < s->nb_streams; i++)
457 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
458 s->streams[i]->discard < AVDISCARD_ALL) {
459 if (s->streams[i]->attached_pic.size <= 0) {
460 av_log(s, AV_LOG_WARNING,
461 "Attached picture on stream %d has invalid size, "
466 ret = add_to_pktbuf(&s->internal->raw_packet_buffer,
467 &s->streams[i]->attached_pic,
468 &s->internal->raw_packet_buffer_end, 1);
475 static int update_stream_avctx(AVFormatContext *s)
478 for (i = 0; i < s->nb_streams; i++) {
479 AVStream *st = s->streams[i];
481 if (!st->internal->need_context_update)
484 /* close parser, because it depends on the codec */
485 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
486 av_parser_close(st->parser);
490 /* update internal codec context, for the parser */
491 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
495 #if FF_API_LAVF_AVCTX
496 FF_DISABLE_DEPRECATION_WARNINGS
497 /* update deprecated public codec context */
498 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
501 FF_ENABLE_DEPRECATION_WARNINGS
504 st->internal->need_context_update = 0;
510 int avformat_open_input(AVFormatContext **ps, const char *filename,
511 AVInputFormat *fmt, AVDictionary **options)
513 AVFormatContext *s = *ps;
515 AVDictionary *tmp = NULL;
516 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
518 if (!s && !(s = avformat_alloc_context()))
519 return AVERROR(ENOMEM);
521 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
522 return AVERROR(EINVAL);
528 av_dict_copy(&tmp, *options, 0);
530 if (s->pb) // must be before any goto fail
531 s->flags |= AVFMT_FLAG_CUSTOM_IO;
533 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
536 if ((ret = init_input(s, filename, &tmp)) < 0)
538 s->probe_score = ret;
540 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
541 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
542 if (!s->protocol_whitelist) {
543 ret = AVERROR(ENOMEM);
548 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
549 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
550 if (!s->protocol_blacklist) {
551 ret = AVERROR(ENOMEM);
556 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
557 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
558 ret = AVERROR(EINVAL);
562 avio_skip(s->pb, s->skip_initial_bytes);
564 /* Check filename in case an image number is expected. */
565 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
566 if (!av_filename_number_test(filename)) {
567 ret = AVERROR(EINVAL);
572 s->duration = s->start_time = AV_NOPTS_VALUE;
573 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
575 /* Allocate private data. */
576 if (s->iformat->priv_data_size > 0) {
577 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
578 ret = AVERROR(ENOMEM);
581 if (s->iformat->priv_class) {
582 *(const AVClass **) s->priv_data = s->iformat->priv_class;
583 av_opt_set_defaults(s->priv_data);
584 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
589 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
591 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
594 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
595 if ((ret = s->iformat->read_header(s)) < 0)
599 s->metadata = s->internal->id3v2_meta;
600 s->internal->id3v2_meta = NULL;
601 } else if (s->internal->id3v2_meta) {
602 int level = AV_LOG_WARNING;
603 if (s->error_recognition & AV_EF_COMPLIANT)
604 level = AV_LOG_ERROR;
605 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
606 av_dict_free(&s->internal->id3v2_meta);
607 if (s->error_recognition & AV_EF_EXPLODE)
608 return AVERROR_INVALIDDATA;
611 if (id3v2_extra_meta) {
612 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
613 !strcmp(s->iformat->name, "tta")) {
614 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
617 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
619 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
621 if ((ret = avformat_queue_attached_pictures(s)) < 0)
624 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
625 s->internal->data_offset = avio_tell(s->pb);
627 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
629 update_stream_avctx(s);
631 for (i = 0; i < s->nb_streams; i++)
632 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
635 av_dict_free(options);
642 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
644 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
646 avformat_free_context(s);
651 /*******************************************************/
653 static void force_codec_ids(AVFormatContext *s, AVStream *st)
655 switch (st->codecpar->codec_type) {
656 case AVMEDIA_TYPE_VIDEO:
657 if (s->video_codec_id)
658 st->codecpar->codec_id = s->video_codec_id;
660 case AVMEDIA_TYPE_AUDIO:
661 if (s->audio_codec_id)
662 st->codecpar->codec_id = s->audio_codec_id;
664 case AVMEDIA_TYPE_SUBTITLE:
665 if (s->subtitle_codec_id)
666 st->codecpar->codec_id = s->subtitle_codec_id;
668 case AVMEDIA_TYPE_DATA:
669 if (s->data_codec_id)
670 st->codecpar->codec_id = s->data_codec_id;
675 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
677 if (st->request_probe>0) {
678 AVProbeData *pd = &st->probe_data;
680 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
684 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
686 av_log(s, AV_LOG_WARNING,
687 "Failed to reallocate probe buffer for stream %d\n",
692 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
693 pd->buf_size += pkt->size;
694 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
697 st->probe_packets = 0;
699 av_log(s, AV_LOG_WARNING,
700 "nothing to probe for stream %d\n", st->index);
704 end= s->internal->raw_packet_buffer_remaining_size <= 0
705 || st->probe_packets<= 0;
707 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
708 int score = set_codec_from_probe_data(s, st, pd);
709 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
713 st->request_probe = -1;
714 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
715 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
717 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
719 force_codec_ids(s, st);
725 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
727 int64_t ref = pkt->dts;
728 int i, pts_wrap_behavior;
729 int64_t pts_wrap_reference;
730 AVProgram *first_program;
732 if (ref == AV_NOPTS_VALUE)
734 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
736 ref &= (1LL << st->pts_wrap_bits)-1;
738 // reference time stamp should be 60 s before first time stamp
739 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
740 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
741 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
742 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
743 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
745 first_program = av_find_program_from_stream(s, NULL, stream_index);
747 if (!first_program) {
748 int default_stream_index = av_find_default_stream_index(s);
749 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
750 for (i = 0; i < s->nb_streams; i++) {
751 if (av_find_program_from_stream(s, NULL, i))
753 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
754 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
758 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
759 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
763 AVProgram *program = first_program;
765 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
766 pts_wrap_reference = program->pts_wrap_reference;
767 pts_wrap_behavior = program->pts_wrap_behavior;
770 program = av_find_program_from_stream(s, program, stream_index);
773 // update every program with differing pts_wrap_reference
774 program = first_program;
776 if (program->pts_wrap_reference != pts_wrap_reference) {
777 for (i = 0; i<program->nb_stream_indexes; i++) {
778 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
779 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
782 program->pts_wrap_reference = pts_wrap_reference;
783 program->pts_wrap_behavior = pts_wrap_behavior;
785 program = av_find_program_from_stream(s, program, stream_index);
791 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
797 AVPacketList *pktl = s->internal->raw_packet_buffer;
801 st = s->streams[pkt->stream_index];
802 if (s->internal->raw_packet_buffer_remaining_size <= 0)
803 if ((err = probe_codec(s, st, NULL)) < 0)
805 if (st->request_probe <= 0) {
806 s->internal->raw_packet_buffer = pktl->next;
807 s->internal->raw_packet_buffer_remaining_size += pkt->size;
816 ret = s->iformat->read_packet(s, pkt);
818 /* Some demuxers return FFERROR_REDO when they consume
819 data and discard it (ignored streams, junk, extradata).
820 We must re-call the demuxer to get the real packet. */
821 if (ret == FFERROR_REDO)
823 if (!pktl || ret == AVERROR(EAGAIN))
825 for (i = 0; i < s->nb_streams; i++) {
827 if (st->probe_packets || st->request_probe > 0)
828 if ((err = probe_codec(s, st, NULL)) < 0)
830 av_assert0(st->request_probe <= 0);
836 AVPacket tmp = { 0 };
837 ret = av_packet_ref(&tmp, pkt);
843 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
844 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
845 av_log(s, AV_LOG_WARNING,
846 "Dropped corrupted packet (stream = %d)\n",
848 av_packet_unref(pkt);
852 if (pkt->stream_index >= (unsigned)s->nb_streams) {
853 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
857 st = s->streams[pkt->stream_index];
859 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
860 // correct first time stamps to negative values
861 if (!is_relative(st->first_dts))
862 st->first_dts = wrap_timestamp(st, st->first_dts);
863 if (!is_relative(st->start_time))
864 st->start_time = wrap_timestamp(st, st->start_time);
865 if (!is_relative(st->cur_dts))
866 st->cur_dts = wrap_timestamp(st, st->cur_dts);
869 pkt->dts = wrap_timestamp(st, pkt->dts);
870 pkt->pts = wrap_timestamp(st, pkt->pts);
872 force_codec_ids(s, st);
874 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
875 if (s->use_wallclock_as_timestamps)
876 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
878 if (!pktl && st->request_probe <= 0)
881 err = add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
882 &s->internal->raw_packet_buffer_end, 0);
885 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
887 if ((err = probe_codec(s, st, pkt)) < 0)
893 /**********************************************************/
895 static int determinable_frame_size(AVCodecContext *avctx)
897 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
898 avctx->codec_id == AV_CODEC_ID_MP1 ||
899 avctx->codec_id == AV_CODEC_ID_MP2 ||
900 avctx->codec_id == AV_CODEC_ID_MP3/* ||
901 avctx->codec_id == AV_CODEC_ID_CELT*/)
907 * Return the frame duration in seconds. Return 0 if not available.
909 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
910 AVCodecParserContext *pc, AVPacket *pkt)
912 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
913 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
914 int frame_size, sample_rate;
916 #if FF_API_LAVF_AVCTX
917 FF_DISABLE_DEPRECATION_WARNINGS
918 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
919 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
920 FF_ENABLE_DEPRECATION_WARNINGS
925 switch (st->codecpar->codec_type) {
926 case AVMEDIA_TYPE_VIDEO:
927 if (st->r_frame_rate.num && !pc && s->iformat) {
928 *pnum = st->r_frame_rate.den;
929 *pden = st->r_frame_rate.num;
930 } else if (st->time_base.num * 1000LL > st->time_base.den) {
931 *pnum = st->time_base.num;
932 *pden = st->time_base.den;
933 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
934 av_assert0(st->internal->avctx->ticks_per_frame);
935 av_reduce(pnum, pden,
937 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
940 if (pc && pc->repeat_pict) {
941 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
942 av_reduce(pnum, pden,
943 (*pnum) * (1LL + pc->repeat_pict),
947 /* If this codec can be interlaced or progressive then we need
948 * a parser to compute duration of a packet. Thus if we have
949 * no parser in such case leave duration undefined. */
950 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
954 case AVMEDIA_TYPE_AUDIO:
955 if (st->internal->avctx_inited) {
956 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
957 sample_rate = st->internal->avctx->sample_rate;
959 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
960 sample_rate = st->codecpar->sample_rate;
962 if (frame_size <= 0 || sample_rate <= 0)
972 static int is_intra_only(enum AVCodecID id)
974 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
977 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
982 static int has_decode_delay_been_guessed(AVStream *st)
984 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
985 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
987 #if CONFIG_H264_DECODER
988 if (st->internal->avctx->has_b_frames &&
989 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
992 if (st->internal->avctx->has_b_frames<3)
993 return st->nb_decoded_frames >= 7;
994 else if (st->internal->avctx->has_b_frames<4)
995 return st->nb_decoded_frames >= 18;
997 return st->nb_decoded_frames >= 20;
1000 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1004 if (pktl == s->internal->packet_buffer_end)
1005 return s->internal->parse_queue;
1009 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1010 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1011 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1014 int delay = st->internal->avctx->has_b_frames;
1017 if (dts == AV_NOPTS_VALUE) {
1018 int64_t best_score = INT64_MAX;
1019 for (i = 0; i<delay; i++) {
1020 if (st->pts_reorder_error_count[i]) {
1021 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1022 if (score < best_score) {
1024 dts = pts_buffer[i];
1029 for (i = 0; i<delay; i++) {
1030 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1031 int64_t diff = FFABS(pts_buffer[i] - dts)
1032 + (uint64_t)st->pts_reorder_error[i];
1033 diff = FFMAX(diff, st->pts_reorder_error[i]);
1034 st->pts_reorder_error[i] = diff;
1035 st->pts_reorder_error_count[i]++;
1036 if (st->pts_reorder_error_count[i] > 250) {
1037 st->pts_reorder_error[i] >>= 1;
1038 st->pts_reorder_error_count[i] >>= 1;
1045 if (dts == AV_NOPTS_VALUE)
1046 dts = pts_buffer[0];
1052 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1053 * of the packets in a window.
1055 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1056 AVPacketList *pkt_buffer)
1058 AVStream *st = s->streams[stream_index];
1059 int delay = st->internal->avctx->has_b_frames;
1062 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1064 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1065 pts_buffer[i] = AV_NOPTS_VALUE;
1067 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1068 if (pkt_buffer->pkt.stream_index != stream_index)
1071 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1072 pts_buffer[0] = pkt_buffer->pkt.pts;
1073 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1074 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1076 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1081 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1082 int64_t dts, int64_t pts, AVPacket *pkt)
1084 AVStream *st = s->streams[stream_index];
1085 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1086 AVPacketList *pktl_it;
1090 if (st->first_dts != AV_NOPTS_VALUE ||
1091 dts == AV_NOPTS_VALUE ||
1092 st->cur_dts == AV_NOPTS_VALUE ||
1096 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1098 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1100 if (is_relative(pts))
1103 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1104 if (pktl_it->pkt.stream_index != stream_index)
1106 if (is_relative(pktl_it->pkt.pts))
1107 pktl_it->pkt.pts += shift;
1109 if (is_relative(pktl_it->pkt.dts))
1110 pktl_it->pkt.dts += shift;
1112 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1113 st->start_time = pktl_it->pkt.pts;
1114 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1115 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1119 if (has_decode_delay_been_guessed(st)) {
1120 update_dts_from_pts(s, stream_index, pktl);
1123 if (st->start_time == AV_NOPTS_VALUE) {
1124 st->start_time = pts;
1125 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1126 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1130 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1131 int stream_index, int duration)
1133 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1134 int64_t cur_dts = RELATIVE_TS_BASE;
1136 if (st->first_dts != AV_NOPTS_VALUE) {
1137 if (st->update_initial_durations_done)
1139 st->update_initial_durations_done = 1;
1140 cur_dts = st->first_dts;
1141 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1142 if (pktl->pkt.stream_index == stream_index) {
1143 if (pktl->pkt.pts != pktl->pkt.dts ||
1144 pktl->pkt.dts != AV_NOPTS_VALUE ||
1147 cur_dts -= duration;
1150 if (pktl && pktl->pkt.dts != st->first_dts) {
1151 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1152 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1156 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1159 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1160 st->first_dts = cur_dts;
1161 } else if (st->cur_dts != RELATIVE_TS_BASE)
1164 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1165 if (pktl->pkt.stream_index != stream_index)
1167 if ((pktl->pkt.pts == pktl->pkt.dts ||
1168 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1169 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1170 pktl->pkt.dts == st->first_dts ||
1171 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1172 !pktl->pkt.duration) {
1173 pktl->pkt.dts = cur_dts;
1174 if (!st->internal->avctx->has_b_frames)
1175 pktl->pkt.pts = cur_dts;
1176 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1177 pktl->pkt.duration = duration;
1180 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1183 st->cur_dts = cur_dts;
1186 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1187 AVCodecParserContext *pc, AVPacket *pkt,
1188 int64_t next_dts, int64_t next_pts)
1190 int num, den, presentation_delayed, delay, i;
1192 AVRational duration;
1193 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1194 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1196 if (s->flags & AVFMT_FLAG_NOFILLIN)
1199 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1200 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1201 if (st->last_dts_for_order_check <= pkt->dts) {
1204 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1205 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1207 st->last_dts_for_order_check);
1208 st->dts_misordered++;
1210 if (st->dts_ordered + st->dts_misordered > 250) {
1211 st->dts_ordered >>= 1;
1212 st->dts_misordered >>= 1;
1216 st->last_dts_for_order_check = pkt->dts;
1217 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1218 pkt->dts = AV_NOPTS_VALUE;
1221 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1222 pkt->dts = AV_NOPTS_VALUE;
1224 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1225 && !st->internal->avctx->has_b_frames)
1226 //FIXME Set low_delay = 0 when has_b_frames = 1
1227 st->internal->avctx->has_b_frames = 1;
1229 /* do we have a video B-frame ? */
1230 delay = st->internal->avctx->has_b_frames;
1231 presentation_delayed = 0;
1233 /* XXX: need has_b_frame, but cannot get it if the codec is
1234 * not initialized */
1236 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1237 presentation_delayed = 1;
1239 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1240 st->pts_wrap_bits < 63 &&
1241 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1242 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1243 pkt->dts -= 1LL << st->pts_wrap_bits;
1245 pkt->pts += 1LL << st->pts_wrap_bits;
1248 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1249 * We take the conservative approach and discard both.
1250 * Note: If this is misbehaving for an H.264 file, then possibly
1251 * presentation_delayed is not set correctly. */
1252 if (delay == 1 && pkt->dts == pkt->pts &&
1253 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1254 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1255 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1256 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1257 pkt->dts = AV_NOPTS_VALUE;
1260 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1261 if (pkt->duration == 0) {
1262 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1264 duration = (AVRational) {num, den};
1265 pkt->duration = av_rescale_rnd(1,
1266 num * (int64_t) st->time_base.den,
1267 den * (int64_t) st->time_base.num,
1272 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1273 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1275 /* Correct timestamps with byte offset if demuxers only have timestamps
1276 * on packet boundaries */
1277 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1278 /* this will estimate bitrate based on this frame's duration and size */
1279 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1280 if (pkt->pts != AV_NOPTS_VALUE)
1282 if (pkt->dts != AV_NOPTS_VALUE)
1286 /* This may be redundant, but it should not hurt. */
1287 if (pkt->dts != AV_NOPTS_VALUE &&
1288 pkt->pts != AV_NOPTS_VALUE &&
1289 pkt->pts > pkt->dts)
1290 presentation_delayed = 1;
1292 if (s->debug & FF_FDEBUG_TS)
1293 av_log(s, AV_LOG_TRACE,
1294 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1295 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1296 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1298 /* Interpolate PTS and DTS if they are not present. We skip H264
1299 * currently because delay and has_b_frames are not reliably set. */
1300 if ((delay == 0 || (delay == 1 && pc)) &&
1302 if (presentation_delayed) {
1303 /* DTS = decompression timestamp */
1304 /* PTS = presentation timestamp */
1305 if (pkt->dts == AV_NOPTS_VALUE)
1306 pkt->dts = st->last_IP_pts;
1307 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1308 if (pkt->dts == AV_NOPTS_VALUE)
1309 pkt->dts = st->cur_dts;
1311 /* This is tricky: the dts must be incremented by the duration
1312 * of the frame we are displaying, i.e. the last I- or P-frame. */
1313 if (st->last_IP_duration == 0)
1314 st->last_IP_duration = pkt->duration;
1315 if (pkt->dts != AV_NOPTS_VALUE)
1316 st->cur_dts = pkt->dts + st->last_IP_duration;
1317 if (pkt->dts != AV_NOPTS_VALUE &&
1318 pkt->pts == AV_NOPTS_VALUE &&
1319 st->last_IP_duration > 0 &&
1320 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1321 next_dts != next_pts &&
1322 next_pts != AV_NOPTS_VALUE)
1323 pkt->pts = next_dts;
1325 st->last_IP_duration = pkt->duration;
1326 st->last_IP_pts = pkt->pts;
1327 /* Cannot compute PTS if not present (we can compute it only
1328 * by knowing the future. */
1329 } else if (pkt->pts != AV_NOPTS_VALUE ||
1330 pkt->dts != AV_NOPTS_VALUE ||
1333 /* presentation is not delayed : PTS and DTS are the same */
1334 if (pkt->pts == AV_NOPTS_VALUE)
1335 pkt->pts = pkt->dts;
1336 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1338 if (pkt->pts == AV_NOPTS_VALUE)
1339 pkt->pts = st->cur_dts;
1340 pkt->dts = pkt->pts;
1341 if (pkt->pts != AV_NOPTS_VALUE)
1342 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1346 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1347 st->pts_buffer[0] = pkt->pts;
1348 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1349 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1351 if(has_decode_delay_been_guessed(st))
1352 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1354 // We skipped it above so we try here.
1356 // This should happen on the first packet
1357 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1358 if (pkt->dts > st->cur_dts)
1359 st->cur_dts = pkt->dts;
1361 if (s->debug & FF_FDEBUG_TS)
1362 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1363 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1366 if (is_intra_only(st->codecpar->codec_id))
1367 pkt->flags |= AV_PKT_FLAG_KEY;
1368 #if FF_API_CONVERGENCE_DURATION
1369 FF_DISABLE_DEPRECATION_WARNINGS
1371 pkt->convergence_duration = pc->convergence_duration;
1372 FF_ENABLE_DEPRECATION_WARNINGS
1376 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1379 AVPacketList *pktl = *pkt_buf;
1380 *pkt_buf = pktl->next;
1381 av_packet_unref(&pktl->pkt);
1384 *pkt_buf_end = NULL;
1388 * Parse a packet, add all split parts to parse_queue.
1390 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1392 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1394 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1395 AVStream *st = s->streams[stream_index];
1396 uint8_t *data = pkt ? pkt->data : NULL;
1397 int size = pkt ? pkt->size : 0;
1398 int ret = 0, got_output = 0;
1401 av_init_packet(&flush_pkt);
1404 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1405 // preserve 0-size sync packets
1406 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1409 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1411 int64_t next_pts = pkt->pts;
1412 int64_t next_dts = pkt->dts;
1414 av_init_packet(&out_pkt);
1415 len = av_parser_parse2(st->parser, st->internal->avctx,
1416 &out_pkt.data, &out_pkt.size, data, size,
1417 pkt->pts, pkt->dts, pkt->pos);
1419 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1421 /* increment read pointer */
1425 got_output = !!out_pkt.size;
1430 if (pkt->side_data) {
1431 out_pkt.side_data = pkt->side_data;
1432 out_pkt.side_data_elems = pkt->side_data_elems;
1433 pkt->side_data = NULL;
1434 pkt->side_data_elems = 0;
1437 /* set the duration */
1438 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1439 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1440 if (st->internal->avctx->sample_rate > 0) {
1442 av_rescale_q_rnd(st->parser->duration,
1443 (AVRational) { 1, st->internal->avctx->sample_rate },
1449 out_pkt.stream_index = st->index;
1450 out_pkt.pts = st->parser->pts;
1451 out_pkt.dts = st->parser->dts;
1452 out_pkt.pos = st->parser->pos;
1454 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1455 out_pkt.pos = st->parser->frame_offset;
1457 if (st->parser->key_frame == 1 ||
1458 (st->parser->key_frame == -1 &&
1459 st->parser->pict_type == AV_PICTURE_TYPE_I))
1460 out_pkt.flags |= AV_PKT_FLAG_KEY;
1462 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1463 out_pkt.flags |= AV_PKT_FLAG_KEY;
1465 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1467 ret = add_to_pktbuf(&s->internal->parse_queue, &out_pkt,
1468 &s->internal->parse_queue_end, 1);
1469 av_packet_unref(&out_pkt);
1474 /* end of the stream => close and free the parser */
1475 if (pkt == &flush_pkt) {
1476 av_parser_close(st->parser);
1481 av_packet_unref(pkt);
1485 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1486 AVPacketList **pkt_buffer_end,
1490 av_assert0(*pkt_buffer);
1493 *pkt_buffer = pktl->next;
1495 *pkt_buffer_end = NULL;
1500 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1502 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1505 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1507 int ret = 0, i, got_packet = 0;
1508 AVDictionary *metadata = NULL;
1510 av_init_packet(pkt);
1512 while (!got_packet && !s->internal->parse_queue) {
1516 /* read next packet */
1517 ret = ff_read_packet(s, &cur_pkt);
1519 if (ret == AVERROR(EAGAIN))
1521 /* flush the parsers */
1522 for (i = 0; i < s->nb_streams; i++) {
1524 if (st->parser && st->need_parsing)
1525 parse_packet(s, NULL, st->index);
1527 /* all remaining packets are now in parse_queue =>
1528 * really terminate parsing */
1532 st = s->streams[cur_pkt.stream_index];
1534 /* update context if required */
1535 if (st->internal->need_context_update) {
1536 if (avcodec_is_open(st->internal->avctx)) {
1537 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1538 avcodec_close(st->internal->avctx);
1539 st->info->found_decoder = 0;
1542 /* close parser, because it depends on the codec */
1543 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1544 av_parser_close(st->parser);
1548 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1552 #if FF_API_LAVF_AVCTX
1553 FF_DISABLE_DEPRECATION_WARNINGS
1554 /* update deprecated public codec context */
1555 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1558 FF_ENABLE_DEPRECATION_WARNINGS
1561 st->internal->need_context_update = 0;
1564 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1565 cur_pkt.dts != AV_NOPTS_VALUE &&
1566 cur_pkt.pts < cur_pkt.dts) {
1567 av_log(s, AV_LOG_WARNING,
1568 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1569 cur_pkt.stream_index,
1570 av_ts2str(cur_pkt.pts),
1571 av_ts2str(cur_pkt.dts),
1574 if (s->debug & FF_FDEBUG_TS)
1575 av_log(s, AV_LOG_DEBUG,
1576 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1577 cur_pkt.stream_index,
1578 av_ts2str(cur_pkt.pts),
1579 av_ts2str(cur_pkt.dts),
1580 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1582 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1583 st->parser = av_parser_init(st->codecpar->codec_id);
1585 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1586 "%s, packets or times may be invalid.\n",
1587 avcodec_get_name(st->codecpar->codec_id));
1588 /* no parser available: just output the raw packets */
1589 st->need_parsing = AVSTREAM_PARSE_NONE;
1590 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1591 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1592 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1593 st->parser->flags |= PARSER_FLAG_ONCE;
1594 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1595 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1598 if (!st->need_parsing || !st->parser) {
1599 /* no parsing needed: we just output the packet as is */
1601 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1602 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1603 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1604 ff_reduce_index(s, st->index);
1605 av_add_index_entry(st, pkt->pos, pkt->dts,
1606 0, 0, AVINDEX_KEYFRAME);
1609 } else if (st->discard < AVDISCARD_ALL) {
1610 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1612 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1613 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1614 st->codecpar->channels = st->internal->avctx->channels;
1615 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1616 st->codecpar->codec_id = st->internal->avctx->codec_id;
1619 av_packet_unref(&cur_pkt);
1621 if (pkt->flags & AV_PKT_FLAG_KEY)
1622 st->skip_to_keyframe = 0;
1623 if (st->skip_to_keyframe) {
1624 av_packet_unref(&cur_pkt);
1632 if (!got_packet && s->internal->parse_queue)
1633 ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1636 AVStream *st = s->streams[pkt->stream_index];
1637 int discard_padding = 0;
1638 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1639 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1640 int64_t sample = ts_to_samples(st, pts);
1641 int duration = ts_to_samples(st, pkt->duration);
1642 int64_t end_sample = sample + duration;
1643 if (duration > 0 && end_sample >= st->first_discard_sample &&
1644 sample < st->last_discard_sample)
1645 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1647 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1648 st->skip_samples = st->start_skip_samples;
1649 if (st->skip_samples || discard_padding) {
1650 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1652 AV_WL32(p, st->skip_samples);
1653 AV_WL32(p + 4, discard_padding);
1654 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1656 st->skip_samples = 0;
1659 if (st->inject_global_side_data) {
1660 for (i = 0; i < st->nb_side_data; i++) {
1661 AVPacketSideData *src_sd = &st->side_data[i];
1664 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1667 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1669 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1673 memcpy(dst_data, src_sd->data, src_sd->size);
1675 st->inject_global_side_data = 0;
1678 #if FF_API_LAVF_MERGE_SD
1679 FF_DISABLE_DEPRECATION_WARNINGS
1680 if (!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1681 av_packet_merge_side_data(pkt);
1682 FF_ENABLE_DEPRECATION_WARNINGS
1686 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1688 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1689 av_dict_copy(&s->metadata, metadata, 0);
1690 av_dict_free(&metadata);
1691 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1694 #if FF_API_LAVF_AVCTX
1695 update_stream_avctx(s);
1698 if (s->debug & FF_FDEBUG_TS)
1699 av_log(s, AV_LOG_DEBUG,
1700 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1701 "size=%d, duration=%"PRId64", flags=%d\n",
1703 av_ts2str(pkt->pts),
1704 av_ts2str(pkt->dts),
1705 pkt->size, pkt->duration, pkt->flags);
1710 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1712 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1718 ret = s->internal->packet_buffer
1719 ? read_from_packet_buffer(&s->internal->packet_buffer,
1720 &s->internal->packet_buffer_end, pkt)
1721 : read_frame_internal(s, pkt);
1728 AVPacketList *pktl = s->internal->packet_buffer;
1731 AVPacket *next_pkt = &pktl->pkt;
1733 if (next_pkt->dts != AV_NOPTS_VALUE) {
1734 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1735 // last dts seen for this stream. if any of packets following
1736 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1737 int64_t last_dts = next_pkt->dts;
1738 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1739 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1740 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1741 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) {
1743 next_pkt->pts = pktl->pkt.dts;
1745 if (last_dts != AV_NOPTS_VALUE) {
1746 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1747 last_dts = pktl->pkt.dts;
1752 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1753 // Fixing the last reference frame had none pts issue (For MXF etc).
1754 // We only do this when
1756 // 2. we are not able to resolve a pts value for current packet.
1757 // 3. the packets for this stream at the end of the files had valid dts.
1758 next_pkt->pts = last_dts + next_pkt->duration;
1760 pktl = s->internal->packet_buffer;
1763 /* read packet from packet buffer, if there is data */
1764 st = s->streams[next_pkt->stream_index];
1765 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1766 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1767 ret = read_from_packet_buffer(&s->internal->packet_buffer,
1768 &s->internal->packet_buffer_end, pkt);
1773 ret = read_frame_internal(s, pkt);
1775 if (pktl && ret != AVERROR(EAGAIN)) {
1782 ret = add_to_pktbuf(&s->internal->packet_buffer, pkt,
1783 &s->internal->packet_buffer_end, 1);
1784 av_packet_unref(pkt);
1791 st = s->streams[pkt->stream_index];
1792 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1793 ff_reduce_index(s, st->index);
1794 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1797 if (is_relative(pkt->dts))
1798 pkt->dts -= RELATIVE_TS_BASE;
1799 if (is_relative(pkt->pts))
1800 pkt->pts -= RELATIVE_TS_BASE;
1805 /* XXX: suppress the packet queue */
1806 static void flush_packet_queue(AVFormatContext *s)
1810 free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
1811 free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1812 free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1814 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1817 /*******************************************************/
1820 int av_find_default_stream_index(AVFormatContext *s)
1824 int best_stream = 0;
1825 int best_score = INT_MIN;
1827 if (s->nb_streams <= 0)
1829 for (i = 0; i < s->nb_streams; i++) {
1832 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1833 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1835 if (st->codecpar->width && st->codecpar->height)
1839 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1840 if (st->codecpar->sample_rate)
1843 if (st->codec_info_nb_frames)
1846 if (st->discard != AVDISCARD_ALL)
1849 if (score > best_score) {
1857 /** Flush the frame reader. */
1858 void ff_read_frame_flush(AVFormatContext *s)
1863 flush_packet_queue(s);
1865 /* Reset read state for each stream. */
1866 for (i = 0; i < s->nb_streams; i++) {
1870 av_parser_close(st->parser);
1873 st->last_IP_pts = AV_NOPTS_VALUE;
1874 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1875 if (st->first_dts == AV_NOPTS_VALUE)
1876 st->cur_dts = RELATIVE_TS_BASE;
1878 /* We set the current DTS to an unspecified origin. */
1879 st->cur_dts = AV_NOPTS_VALUE;
1881 st->probe_packets = MAX_PROBE_PACKETS;
1883 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1884 st->pts_buffer[j] = AV_NOPTS_VALUE;
1886 if (s->internal->inject_global_side_data)
1887 st->inject_global_side_data = 1;
1889 st->skip_samples = 0;
1893 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1897 for (i = 0; i < s->nb_streams; i++) {
1898 AVStream *st = s->streams[i];
1901 av_rescale(timestamp,
1902 st->time_base.den * (int64_t) ref_st->time_base.num,
1903 st->time_base.num * (int64_t) ref_st->time_base.den);
1907 void ff_reduce_index(AVFormatContext *s, int stream_index)
1909 AVStream *st = s->streams[stream_index];
1910 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1912 if ((unsigned) st->nb_index_entries >= max_entries) {
1914 for (i = 0; 2 * i < st->nb_index_entries; i++)
1915 st->index_entries[i] = st->index_entries[2 * i];
1916 st->nb_index_entries = i;
1920 int ff_add_index_entry(AVIndexEntry **index_entries,
1921 int *nb_index_entries,
1922 unsigned int *index_entries_allocated_size,
1923 int64_t pos, int64_t timestamp,
1924 int size, int distance, int flags)
1926 AVIndexEntry *entries, *ie;
1929 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1932 if (timestamp == AV_NOPTS_VALUE)
1933 return AVERROR(EINVAL);
1935 if (size < 0 || size > 0x3FFFFFFF)
1936 return AVERROR(EINVAL);
1938 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1939 timestamp -= RELATIVE_TS_BASE;
1941 entries = av_fast_realloc(*index_entries,
1942 index_entries_allocated_size,
1943 (*nb_index_entries + 1) *
1944 sizeof(AVIndexEntry));
1948 *index_entries = entries;
1950 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1951 timestamp, AVSEEK_FLAG_ANY);
1954 index = (*nb_index_entries)++;
1955 ie = &entries[index];
1956 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1958 ie = &entries[index];
1959 if (ie->timestamp != timestamp) {
1960 if (ie->timestamp <= timestamp)
1962 memmove(entries + index + 1, entries + index,
1963 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1964 (*nb_index_entries)++;
1965 } else if (ie->pos == pos && distance < ie->min_distance)
1966 // do not reduce the distance
1967 distance = ie->min_distance;
1971 ie->timestamp = timestamp;
1972 ie->min_distance = distance;
1979 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
1980 int size, int distance, int flags)
1982 timestamp = wrap_timestamp(st, timestamp);
1983 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1984 &st->index_entries_allocated_size, pos,
1985 timestamp, size, distance, flags);
1988 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1989 int64_t wanted_timestamp, int flags)
1997 // Optimize appending index entries at the end.
1998 if (b && entries[b - 1].timestamp < wanted_timestamp)
2004 // Search for the next non-discarded packet.
2005 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2007 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2013 timestamp = entries[m].timestamp;
2014 if (timestamp >= wanted_timestamp)
2016 if (timestamp <= wanted_timestamp)
2019 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2021 if (!(flags & AVSEEK_FLAG_ANY))
2022 while (m >= 0 && m < nb_entries &&
2023 !(entries[m].flags & AVINDEX_KEYFRAME))
2024 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2026 if (m == nb_entries)
2031 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2034 int64_t pos_delta = 0;
2036 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2037 const char *proto = avio_find_protocol_name(s->filename);
2040 av_log(s, AV_LOG_INFO,
2041 "Protocol name not provided, cannot determine if input is local or "
2042 "a network protocol, buffers and access patterns cannot be configured "
2043 "optimally without knowing the protocol\n");
2046 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2049 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2050 AVStream *st1 = s->streams[ist1];
2051 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2052 AVStream *st2 = s->streams[ist2];
2058 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2059 AVIndexEntry *e1 = &st1->index_entries[i1];
2060 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2062 skip = FFMAX(skip, e1->size);
2063 for (; i2 < st2->nb_index_entries; i2++) {
2064 AVIndexEntry *e2 = &st2->index_entries[i2];
2065 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2066 if (e2_pts - e1_pts < time_tolerance)
2068 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2076 /* XXX This could be adjusted depending on protocol*/
2077 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2078 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2079 ffio_set_buf_size(s->pb, pos_delta);
2080 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2083 if (skip < (1<<23)) {
2084 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2088 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2090 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2091 wanted_timestamp, flags);
2094 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2095 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2097 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2098 if (stream_index >= 0)
2099 ts = wrap_timestamp(s->streams[stream_index], ts);
2103 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2104 int64_t target_ts, int flags)
2106 AVInputFormat *avif = s->iformat;
2107 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2108 int64_t ts_min, ts_max, ts;
2113 if (stream_index < 0)
2116 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2119 ts_min = AV_NOPTS_VALUE;
2120 pos_limit = -1; // GCC falsely says it may be uninitialized.
2122 st = s->streams[stream_index];
2123 if (st->index_entries) {
2126 /* FIXME: Whole function must be checked for non-keyframe entries in
2127 * index case, especially read_timestamp(). */
2128 index = av_index_search_timestamp(st, target_ts,
2129 flags | AVSEEK_FLAG_BACKWARD);
2130 index = FFMAX(index, 0);
2131 e = &st->index_entries[index];
2133 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2135 ts_min = e->timestamp;
2136 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2137 pos_min, av_ts2str(ts_min));
2139 av_assert1(index == 0);
2142 index = av_index_search_timestamp(st, target_ts,
2143 flags & ~AVSEEK_FLAG_BACKWARD);
2144 av_assert0(index < st->nb_index_entries);
2146 e = &st->index_entries[index];
2147 av_assert1(e->timestamp >= target_ts);
2149 ts_max = e->timestamp;
2150 pos_limit = pos_max - e->min_distance;
2151 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2152 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2156 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2157 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2162 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2165 ff_read_frame_flush(s);
2166 ff_update_cur_dts(s, st, ts);
2171 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2172 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2174 int64_t step = 1024;
2175 int64_t limit, ts_max;
2176 int64_t filesize = avio_size(s->pb);
2177 int64_t pos_max = filesize - 1;
2180 pos_max = FFMAX(0, (pos_max) - step);
2181 ts_max = ff_read_timestamp(s, stream_index,
2182 &pos_max, limit, read_timestamp);
2184 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2185 if (ts_max == AV_NOPTS_VALUE)
2189 int64_t tmp_pos = pos_max + 1;
2190 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2191 &tmp_pos, INT64_MAX, read_timestamp);
2192 if (tmp_ts == AV_NOPTS_VALUE)
2194 av_assert0(tmp_pos > pos_max);
2197 if (tmp_pos >= filesize)
2209 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2210 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2211 int64_t ts_min, int64_t ts_max,
2212 int flags, int64_t *ts_ret,
2213 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2214 int64_t *, int64_t))
2221 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2223 if (ts_min == AV_NOPTS_VALUE) {
2224 pos_min = s->internal->data_offset;
2225 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2226 if (ts_min == AV_NOPTS_VALUE)
2230 if (ts_min >= target_ts) {
2235 if (ts_max == AV_NOPTS_VALUE) {
2236 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2238 pos_limit = pos_max;
2241 if (ts_max <= target_ts) {
2246 av_assert0(ts_min < ts_max);
2249 while (pos_min < pos_limit) {
2250 av_log(s, AV_LOG_TRACE,
2251 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2252 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2253 av_assert0(pos_limit <= pos_max);
2255 if (no_change == 0) {
2256 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2257 // interpolate position (better than dichotomy)
2258 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2260 pos_min - approximate_keyframe_distance;
2261 } else if (no_change == 1) {
2262 // bisection if interpolation did not change min / max pos last time
2263 pos = (pos_min + pos_limit) >> 1;
2265 /* linear search if bisection failed, can only happen if there
2266 * are very few or no keyframes between min/max */
2271 else if (pos > pos_limit)
2275 // May pass pos_limit instead of -1.
2276 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2281 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2282 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2283 pos_min, pos, pos_max,
2284 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2285 pos_limit, start_pos, no_change);
2286 if (ts == AV_NOPTS_VALUE) {
2287 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2290 if (target_ts <= ts) {
2291 pos_limit = start_pos - 1;
2295 if (target_ts >= ts) {
2301 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2302 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2305 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2307 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2308 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2309 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2315 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2316 int64_t pos, int flags)
2318 int64_t pos_min, pos_max;
2320 pos_min = s->internal->data_offset;
2321 pos_max = avio_size(s->pb) - 1;
2325 else if (pos > pos_max)
2328 avio_seek(s->pb, pos, SEEK_SET);
2330 s->io_repositioned = 1;
2335 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2336 int64_t timestamp, int flags)
2343 st = s->streams[stream_index];
2345 index = av_index_search_timestamp(st, timestamp, flags);
2347 if (index < 0 && st->nb_index_entries &&
2348 timestamp < st->index_entries[0].timestamp)
2351 if (index < 0 || index == st->nb_index_entries - 1) {
2355 if (st->nb_index_entries) {
2356 av_assert0(st->index_entries);
2357 ie = &st->index_entries[st->nb_index_entries - 1];
2358 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2360 ff_update_cur_dts(s, st, ie->timestamp);
2362 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2368 read_status = av_read_frame(s, &pkt);
2369 } while (read_status == AVERROR(EAGAIN));
2370 if (read_status < 0)
2372 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2373 if (pkt.flags & AV_PKT_FLAG_KEY) {
2374 av_packet_unref(&pkt);
2377 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2378 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);
2379 av_packet_unref(&pkt);
2383 av_packet_unref(&pkt);
2385 index = av_index_search_timestamp(st, timestamp, flags);
2390 ff_read_frame_flush(s);
2391 if (s->iformat->read_seek)
2392 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2394 ie = &st->index_entries[index];
2395 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2397 ff_update_cur_dts(s, st, ie->timestamp);
2402 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2403 int64_t timestamp, int flags)
2408 if (flags & AVSEEK_FLAG_BYTE) {
2409 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2411 ff_read_frame_flush(s);
2412 return seek_frame_byte(s, stream_index, timestamp, flags);
2415 if (stream_index < 0) {
2416 stream_index = av_find_default_stream_index(s);
2417 if (stream_index < 0)
2420 st = s->streams[stream_index];
2421 /* timestamp for default must be expressed in AV_TIME_BASE units */
2422 timestamp = av_rescale(timestamp, st->time_base.den,
2423 AV_TIME_BASE * (int64_t) st->time_base.num);
2426 /* first, we try the format specific seek */
2427 if (s->iformat->read_seek) {
2428 ff_read_frame_flush(s);
2429 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2435 if (s->iformat->read_timestamp &&
2436 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2437 ff_read_frame_flush(s);
2438 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2439 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2440 ff_read_frame_flush(s);
2441 return seek_frame_generic(s, stream_index, timestamp, flags);
2446 int av_seek_frame(AVFormatContext *s, int stream_index,
2447 int64_t timestamp, int flags)
2451 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2452 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2453 if ((flags & AVSEEK_FLAG_BACKWARD))
2457 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2458 flags & ~AVSEEK_FLAG_BACKWARD);
2461 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2464 ret = avformat_queue_attached_pictures(s);
2469 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2470 int64_t ts, int64_t max_ts, int flags)
2472 if (min_ts > ts || max_ts < ts)
2474 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2475 return AVERROR(EINVAL);
2478 flags |= AVSEEK_FLAG_ANY;
2479 flags &= ~AVSEEK_FLAG_BACKWARD;
2481 if (s->iformat->read_seek2) {
2483 ff_read_frame_flush(s);
2485 if (stream_index == -1 && s->nb_streams == 1) {
2486 AVRational time_base = s->streams[0]->time_base;
2487 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2488 min_ts = av_rescale_rnd(min_ts, time_base.den,
2489 time_base.num * (int64_t)AV_TIME_BASE,
2490 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2491 max_ts = av_rescale_rnd(max_ts, time_base.den,
2492 time_base.num * (int64_t)AV_TIME_BASE,
2493 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2497 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2501 ret = avformat_queue_attached_pictures(s);
2505 if (s->iformat->read_timestamp) {
2506 // try to seek via read_timestamp()
2509 // Fall back on old API if new is not implemented but old is.
2510 // Note the old API has somewhat different semantics.
2511 if (s->iformat->read_seek || 1) {
2512 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2513 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2514 if (ret<0 && ts != min_ts && max_ts != ts) {
2515 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2517 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2522 // try some generic seek like seek_frame_generic() but with new ts semantics
2523 return -1; //unreachable
2526 int avformat_flush(AVFormatContext *s)
2528 ff_read_frame_flush(s);
2532 /*******************************************************/
2535 * Return TRUE if the stream has accurate duration in any stream.
2537 * @return TRUE if the stream has accurate duration for at least one component.
2539 static int has_duration(AVFormatContext *ic)
2544 for (i = 0; i < ic->nb_streams; i++) {
2545 st = ic->streams[i];
2546 if (st->duration != AV_NOPTS_VALUE)
2549 if (ic->duration != AV_NOPTS_VALUE)
2555 * Estimate the stream timings from the one of each components.
2557 * Also computes the global bitrate if possible.
2559 static void update_stream_timings(AVFormatContext *ic)
2561 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2562 int64_t duration, duration1, filesize;
2567 start_time = INT64_MAX;
2568 start_time_text = INT64_MAX;
2569 end_time = INT64_MIN;
2570 end_time_text = INT64_MIN;
2571 duration = INT64_MIN;
2572 for (i = 0; i < ic->nb_streams; i++) {
2573 st = ic->streams[i];
2574 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2575 start_time1 = av_rescale_q(st->start_time, st->time_base,
2577 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2578 if (start_time1 < start_time_text)
2579 start_time_text = start_time1;
2581 start_time = FFMIN(start_time, start_time1);
2582 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2584 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2585 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2586 end_time1 += start_time1;
2587 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2588 end_time_text = FFMAX(end_time_text, end_time1);
2590 end_time = FFMAX(end_time, end_time1);
2592 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2593 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2594 p->start_time = start_time1;
2595 if (p->end_time < end_time1)
2596 p->end_time = end_time1;
2599 if (st->duration != AV_NOPTS_VALUE) {
2600 duration1 = av_rescale_q(st->duration, st->time_base,
2602 duration = FFMAX(duration, duration1);
2605 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2606 start_time = start_time_text;
2607 else if (start_time > start_time_text)
2608 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2610 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - end_time < AV_TIME_BASE)) {
2611 end_time = end_time_text;
2612 } else if (end_time < end_time_text) {
2613 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2616 if (start_time != INT64_MAX) {
2617 ic->start_time = start_time;
2618 if (end_time != INT64_MIN) {
2619 if (ic->nb_programs > 1) {
2620 for (i = 0; i < ic->nb_programs; i++) {
2621 p = ic->programs[i];
2622 if (p->start_time != AV_NOPTS_VALUE &&
2623 p->end_time > p->start_time &&
2624 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2625 duration = FFMAX(duration, p->end_time - p->start_time);
2627 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2628 duration = FFMAX(duration, end_time - start_time);
2632 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2633 ic->duration = duration;
2635 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2636 /* compute the bitrate */
2637 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2638 (double) ic->duration;
2639 if (bitrate >= 0 && bitrate <= INT64_MAX)
2640 ic->bit_rate = bitrate;
2644 static void fill_all_stream_timings(AVFormatContext *ic)
2649 update_stream_timings(ic);
2650 for (i = 0; i < ic->nb_streams; i++) {
2651 st = ic->streams[i];
2652 if (st->start_time == AV_NOPTS_VALUE) {
2653 if (ic->start_time != AV_NOPTS_VALUE)
2654 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2656 if (ic->duration != AV_NOPTS_VALUE)
2657 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2663 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2665 int64_t filesize, duration;
2666 int i, show_warning = 0;
2669 /* if bit_rate is already set, we believe it */
2670 if (ic->bit_rate <= 0) {
2671 int64_t bit_rate = 0;
2672 for (i = 0; i < ic->nb_streams; i++) {
2673 st = ic->streams[i];
2674 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2675 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2676 if (st->codecpar->bit_rate > 0) {
2677 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2681 bit_rate += st->codecpar->bit_rate;
2682 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2683 // If we have a videostream with packets but without a bitrate
2684 // then consider the sum not known
2689 ic->bit_rate = bit_rate;
2692 /* if duration is already set, we believe it */
2693 if (ic->duration == AV_NOPTS_VALUE &&
2694 ic->bit_rate != 0) {
2695 filesize = ic->pb ? avio_size(ic->pb) : 0;
2696 if (filesize > ic->internal->data_offset) {
2697 filesize -= ic->internal->data_offset;
2698 for (i = 0; i < ic->nb_streams; i++) {
2699 st = ic->streams[i];
2700 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2701 && st->duration == AV_NOPTS_VALUE) {
2702 duration = av_rescale(8 * filesize, st->time_base.den,
2704 (int64_t) st->time_base.num);
2705 st->duration = duration;
2712 av_log(ic, AV_LOG_WARNING,
2713 "Estimating duration from bitrate, this may be inaccurate\n");
2716 #define DURATION_MAX_READ_SIZE 250000LL
2717 #define DURATION_MAX_RETRY 6
2719 /* only usable for MPEG-PS streams */
2720 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2722 AVPacket pkt1, *pkt = &pkt1;
2724 int num, den, read_size, i, ret;
2725 int found_duration = 0;
2727 int64_t filesize, offset, duration;
2730 /* flush packet queue */
2731 flush_packet_queue(ic);
2733 for (i = 0; i < ic->nb_streams; i++) {
2734 st = ic->streams[i];
2735 if (st->start_time == AV_NOPTS_VALUE &&
2736 st->first_dts == AV_NOPTS_VALUE &&
2737 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2738 av_log(ic, AV_LOG_WARNING,
2739 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2742 av_parser_close(st->parser);
2747 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2748 /* estimate the end time (duration) */
2749 /* XXX: may need to support wrapping */
2750 filesize = ic->pb ? avio_size(ic->pb) : 0;
2752 is_end = found_duration;
2753 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2757 avio_seek(ic->pb, offset, SEEK_SET);
2760 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2764 ret = ff_read_packet(ic, pkt);
2765 } while (ret == AVERROR(EAGAIN));
2768 read_size += pkt->size;
2769 st = ic->streams[pkt->stream_index];
2770 if (pkt->pts != AV_NOPTS_VALUE &&
2771 (st->start_time != AV_NOPTS_VALUE ||
2772 st->first_dts != AV_NOPTS_VALUE)) {
2773 if (pkt->duration == 0) {
2774 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2776 pkt->duration = av_rescale_rnd(1,
2777 num * (int64_t) st->time_base.den,
2778 den * (int64_t) st->time_base.num,
2782 duration = pkt->pts + pkt->duration;
2784 if (st->start_time != AV_NOPTS_VALUE)
2785 duration -= st->start_time;
2787 duration -= st->first_dts;
2789 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2790 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2791 st->duration = duration;
2792 st->info->last_duration = duration;
2795 av_packet_unref(pkt);
2798 /* check if all audio/video streams have valid duration */
2801 for (i = 0; i < ic->nb_streams; i++) {
2802 st = ic->streams[i];
2803 switch (st->codecpar->codec_type) {
2804 case AVMEDIA_TYPE_VIDEO:
2805 case AVMEDIA_TYPE_AUDIO:
2806 if (st->duration == AV_NOPTS_VALUE)
2813 ++retry <= DURATION_MAX_RETRY);
2815 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2817 /* warn about audio/video streams which duration could not be estimated */
2818 for (i = 0; i < ic->nb_streams; i++) {
2819 st = ic->streams[i];
2820 if (st->duration == AV_NOPTS_VALUE) {
2821 switch (st->codecpar->codec_type) {
2822 case AVMEDIA_TYPE_VIDEO:
2823 case AVMEDIA_TYPE_AUDIO:
2824 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2825 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2827 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2831 fill_all_stream_timings(ic);
2833 avio_seek(ic->pb, old_offset, SEEK_SET);
2834 for (i = 0; i < ic->nb_streams; i++) {
2837 st = ic->streams[i];
2838 st->cur_dts = st->first_dts;
2839 st->last_IP_pts = AV_NOPTS_VALUE;
2840 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2841 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2842 st->pts_buffer[j] = AV_NOPTS_VALUE;
2846 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2850 /* get the file size, if possible */
2851 if (ic->iformat->flags & AVFMT_NOFILE) {
2854 file_size = avio_size(ic->pb);
2855 file_size = FFMAX(0, file_size);
2858 if ((!strcmp(ic->iformat->name, "mpeg") ||
2859 !strcmp(ic->iformat->name, "mpegts")) &&
2860 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2861 /* get accurate estimate from the PTSes */
2862 estimate_timings_from_pts(ic, old_offset);
2863 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2864 } else if (has_duration(ic)) {
2865 /* at least one component has timings - we use them for all
2867 fill_all_stream_timings(ic);
2868 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2870 /* less precise: use bitrate info */
2871 estimate_timings_from_bit_rate(ic);
2872 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2874 update_stream_timings(ic);
2878 AVStream av_unused *st;
2879 for (i = 0; i < ic->nb_streams; i++) {
2880 st = ic->streams[i];
2881 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2882 (double) st->start_time * av_q2d(st->time_base),
2883 (double) st->duration * av_q2d(st->time_base));
2885 av_log(ic, AV_LOG_TRACE,
2886 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2887 (double) ic->start_time / AV_TIME_BASE,
2888 (double) ic->duration / AV_TIME_BASE,
2889 (int64_t)ic->bit_rate / 1000);
2893 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2895 AVCodecContext *avctx = st->internal->avctx;
2897 #define FAIL(errmsg) do { \
2899 *errmsg_ptr = errmsg; \
2903 if ( avctx->codec_id == AV_CODEC_ID_NONE
2904 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2905 FAIL("unknown codec");
2906 switch (avctx->codec_type) {
2907 case AVMEDIA_TYPE_AUDIO:
2908 if (!avctx->frame_size && determinable_frame_size(avctx))
2909 FAIL("unspecified frame size");
2910 if (st->info->found_decoder >= 0 &&
2911 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2912 FAIL("unspecified sample format");
2913 if (!avctx->sample_rate)
2914 FAIL("unspecified sample rate");
2915 if (!avctx->channels)
2916 FAIL("unspecified number of channels");
2917 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2918 FAIL("no decodable DTS frames");
2920 case AVMEDIA_TYPE_VIDEO:
2922 FAIL("unspecified size");
2923 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2924 FAIL("unspecified pixel format");
2925 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2926 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2927 FAIL("no frame in rv30/40 and no sar");
2929 case AVMEDIA_TYPE_SUBTITLE:
2930 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2931 FAIL("unspecified size");
2933 case AVMEDIA_TYPE_DATA:
2934 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2940 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2941 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2942 AVDictionary **options)
2944 AVCodecContext *avctx = st->internal->avctx;
2945 const AVCodec *codec;
2946 int got_picture = 1, ret = 0;
2947 AVFrame *frame = av_frame_alloc();
2948 AVSubtitle subtitle;
2949 AVPacket pkt = *avpkt;
2950 int do_skip_frame = 0;
2951 enum AVDiscard skip_frame;
2954 return AVERROR(ENOMEM);
2956 if (!avcodec_is_open(avctx) &&
2957 st->info->found_decoder <= 0 &&
2958 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
2959 AVDictionary *thread_opt = NULL;
2961 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
2964 st->info->found_decoder = -st->codecpar->codec_id;
2969 /* Force thread count to 1 since the H.264 decoder will not extract
2970 * SPS and PPS to extradata during multi-threaded decoding. */
2971 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2972 if (s->codec_whitelist)
2973 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
2974 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
2976 av_dict_free(&thread_opt);
2978 st->info->found_decoder = -avctx->codec_id;
2981 st->info->found_decoder = 1;
2982 } else if (!st->info->found_decoder)
2983 st->info->found_decoder = 1;
2985 if (st->info->found_decoder < 0) {
2990 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
2992 skip_frame = avctx->skip_frame;
2993 avctx->skip_frame = AVDISCARD_ALL;
2996 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2998 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
2999 (!st->codec_info_nb_frames &&
3000 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3002 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3003 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3004 ret = avcodec_send_packet(avctx, &pkt);
3005 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3009 ret = avcodec_receive_frame(avctx, frame);
3012 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3014 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3015 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3016 &got_picture, &pkt);
3022 st->nb_decoded_frames++;
3027 if (!pkt.data && !got_picture)
3031 if (do_skip_frame) {
3032 avctx->skip_frame = skip_frame;
3035 av_frame_free(&frame);
3039 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3041 while (tags->id != AV_CODEC_ID_NONE) {
3049 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3052 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3053 if (tag == tags[i].tag)
3055 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3056 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3058 return AV_CODEC_ID_NONE;
3061 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3063 if (bps <= 0 || bps > 64)
3064 return AV_CODEC_ID_NONE;
3069 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3071 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3073 return AV_CODEC_ID_NONE;
3078 if (sflags & (1 << (bps - 1))) {
3081 return AV_CODEC_ID_PCM_S8;
3083 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3085 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3087 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3089 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3091 return AV_CODEC_ID_NONE;
3096 return AV_CODEC_ID_PCM_U8;
3098 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3100 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3102 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3104 return AV_CODEC_ID_NONE;
3110 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3113 if (!av_codec_get_tag2(tags, id, &tag))
3118 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3122 for (i = 0; tags && tags[i]; i++) {
3123 const AVCodecTag *codec_tags = tags[i];
3124 while (codec_tags->id != AV_CODEC_ID_NONE) {
3125 if (codec_tags->id == id) {
3126 *tag = codec_tags->tag;
3135 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3138 for (i = 0; tags && tags[i]; i++) {
3139 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3140 if (id != AV_CODEC_ID_NONE)
3143 return AV_CODEC_ID_NONE;
3146 static void compute_chapters_end(AVFormatContext *s)
3149 int64_t max_time = 0;
3151 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3152 max_time = s->duration +
3153 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3155 for (i = 0; i < s->nb_chapters; i++)
3156 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3157 AVChapter *ch = s->chapters[i];
3158 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3162 for (j = 0; j < s->nb_chapters; j++) {
3163 AVChapter *ch1 = s->chapters[j];
3164 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3166 if (j != i && next_start > ch->start && next_start < end)
3169 ch->end = (end == INT64_MAX) ? ch->start : end;
3173 static int get_std_framerate(int i)
3176 return (i + 1) * 1001;
3180 return (i + 31) * 1001 * 12;
3184 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3188 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3191 /* Is the time base unreliable?
3192 * This is a heuristic to balance between quick acceptance of the values in
3193 * the headers vs. some extra checks.
3194 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3195 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3196 * And there are "variable" fps files this needs to detect as well. */
3197 static int tb_unreliable(AVCodecContext *c)
3199 if (c->time_base.den >= 101LL * c->time_base.num ||
3200 c->time_base.den < 5LL * c->time_base.num ||
3201 // c->codec_tag == AV_RL32("DIVX") ||
3202 // c->codec_tag == AV_RL32("XVID") ||
3203 c->codec_tag == AV_RL32("mp4v") ||
3204 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3205 c->codec_id == AV_CODEC_ID_GIF ||
3206 c->codec_id == AV_CODEC_ID_HEVC ||
3207 c->codec_id == AV_CODEC_ID_H264)
3212 int ff_alloc_extradata(AVCodecParameters *par, int size)
3216 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
3217 par->extradata = NULL;
3218 par->extradata_size = 0;
3219 return AVERROR(EINVAL);
3221 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3222 if (par->extradata) {
3223 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3224 par->extradata_size = size;
3227 par->extradata_size = 0;
3228 ret = AVERROR(ENOMEM);
3233 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3235 int ret = ff_alloc_extradata(par, size);
3238 ret = avio_read(pb, par->extradata, size);
3240 av_freep(&par->extradata);
3241 par->extradata_size = 0;
3242 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3243 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3249 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3252 int64_t last = st->info->last_dts;
3254 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3255 && ts - (uint64_t)last < INT64_MAX) {
3256 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3257 int64_t duration = ts - last;
3259 if (!st->info->duration_error)
3260 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3261 if (!st->info->duration_error)
3262 return AVERROR(ENOMEM);
3264 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3265 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3266 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3267 if (st->info->duration_error[0][1][i] < 1e10) {
3268 int framerate = get_std_framerate(i);
3269 double sdts = dts*framerate/(1001*12);
3270 for (j= 0; j<2; j++) {
3271 int64_t ticks = llrint(sdts+j*0.5);
3272 double error= sdts - ticks + j*0.5;
3273 st->info->duration_error[j][0][i] += error;
3274 st->info->duration_error[j][1][i] += error*error;
3278 st->info->duration_count++;
3279 st->info->rfps_duration_sum += duration;
3281 if (st->info->duration_count % 10 == 0) {
3282 int n = st->info->duration_count;
3283 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3284 if (st->info->duration_error[0][1][i] < 1e10) {
3285 double a0 = st->info->duration_error[0][0][i] / n;
3286 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3287 double a1 = st->info->duration_error[1][0][i] / n;
3288 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3289 if (error0 > 0.04 && error1 > 0.04) {
3290 st->info->duration_error[0][1][i] = 2e10;
3291 st->info->duration_error[1][1][i] = 2e10;
3297 // ignore the first 4 values, they might have some random jitter
3298 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3299 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3301 if (ts != AV_NOPTS_VALUE)
3302 st->info->last_dts = ts;
3307 void ff_rfps_calculate(AVFormatContext *ic)
3311 for (i = 0; i < ic->nb_streams; i++) {
3312 AVStream *st = ic->streams[i];
3314 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3316 // the check for tb_unreliable() is not completely correct, since this is not about handling
3317 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3318 // ipmovie.c produces.
3319 if (tb_unreliable(st->internal->avctx) && 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)
3320 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);
3321 if (st->info->duration_count>1 && !st->r_frame_rate.num
3322 && tb_unreliable(st->internal->avctx)) {
3324 double best_error= 0.01;
3325 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3327 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3330 if (st->info->codec_info_duration &&
3331 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3333 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3336 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3339 for (k= 0; k<2; k++) {
3340 int n = st->info->duration_count;
3341 double a= st->info->duration_error[k][0][j] / n;
3342 double error= st->info->duration_error[k][1][j]/n - a*a;
3344 if (error < best_error && best_error> 0.000000001) {
3346 num = get_std_framerate(j);
3349 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3352 // do not increase frame rate by more than 1 % in order to match a standard rate.
3353 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3354 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3356 if ( !st->avg_frame_rate.num
3357 && st->r_frame_rate.num && st->info->rfps_duration_sum
3358 && st->info->codec_info_duration <= 0
3359 && st->info->duration_count > 2
3360 && fabs(1.0 / (av_q2d(st->r_frame_rate) * av_q2d(st->time_base)) - st->info->rfps_duration_sum / (double)st->info->duration_count) <= 1.0
3362 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3363 st->avg_frame_rate = st->r_frame_rate;
3366 av_freep(&st->info->duration_error);
3367 st->info->last_dts = AV_NOPTS_VALUE;
3368 st->info->duration_count = 0;
3369 st->info->rfps_duration_sum = 0;
3373 static int extract_extradata_check(AVStream *st)
3375 const AVBitStreamFilter *f;
3377 f = av_bsf_get_by_name("extract_extradata");
3382 const enum AVCodecID *ids;
3383 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3384 if (*ids == st->codecpar->codec_id)
3391 static int extract_extradata_init(AVStream *st)
3393 AVStreamInternal *i = st->internal;
3394 const AVBitStreamFilter *f;
3397 f = av_bsf_get_by_name("extract_extradata");
3401 /* check that the codec id is supported */
3402 ret = extract_extradata_check(st);
3406 i->extract_extradata.pkt = av_packet_alloc();
3407 if (!i->extract_extradata.pkt)
3408 return AVERROR(ENOMEM);
3410 ret = av_bsf_alloc(f, &i->extract_extradata.bsf);
3414 ret = avcodec_parameters_copy(i->extract_extradata.bsf->par_in,
3419 i->extract_extradata.bsf->time_base_in = st->time_base;
3421 /* if init fails here, we assume extracting extradata is just not
3422 * supported for this codec, so we return success */
3423 ret = av_bsf_init(i->extract_extradata.bsf);
3425 av_bsf_free(&i->extract_extradata.bsf);
3430 i->extract_extradata.inited = 1;
3434 av_bsf_free(&i->extract_extradata.bsf);
3435 av_packet_free(&i->extract_extradata.pkt);
3439 static int extract_extradata(AVStream *st, AVPacket *pkt)
3441 AVStreamInternal *i = st->internal;
3445 if (!i->extract_extradata.inited) {
3446 ret = extract_extradata_init(st);
3451 if (i->extract_extradata.inited && !i->extract_extradata.bsf)
3454 pkt_ref = i->extract_extradata.pkt;
3455 ret = av_packet_ref(pkt_ref, pkt);
3459 ret = av_bsf_send_packet(i->extract_extradata.bsf, pkt_ref);
3461 av_packet_unref(pkt_ref);
3465 while (ret >= 0 && !i->avctx->extradata) {
3469 ret = av_bsf_receive_packet(i->extract_extradata.bsf, pkt_ref);
3471 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3476 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3480 i->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3481 if (!i->avctx->extradata) {
3482 av_packet_unref(pkt_ref);
3483 return AVERROR(ENOMEM);
3485 memcpy(i->avctx->extradata, extradata, extradata_size);
3486 i->avctx->extradata_size = extradata_size;
3488 av_packet_unref(pkt_ref);
3494 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3496 int i, count = 0, ret = 0, j;
3499 AVCodecContext *avctx;
3500 AVPacket pkt1, *pkt;
3501 int64_t old_offset = avio_tell(ic->pb);
3502 // new streams might appear, no options for those
3503 int orig_nb_streams = ic->nb_streams;
3505 int64_t max_analyze_duration = ic->max_analyze_duration;
3506 int64_t max_stream_analyze_duration;
3507 int64_t max_subtitle_analyze_duration;
3508 int64_t probesize = ic->probesize;
3509 int eof_reached = 0;
3510 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3512 flush_codecs = probesize > 0;
3514 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3516 max_stream_analyze_duration = max_analyze_duration;
3517 max_subtitle_analyze_duration = max_analyze_duration;
3518 if (!max_analyze_duration) {
3519 max_stream_analyze_duration =
3520 max_analyze_duration = 5*AV_TIME_BASE;
3521 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3522 if (!strcmp(ic->iformat->name, "flv"))
3523 max_stream_analyze_duration = 90*AV_TIME_BASE;
3524 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3525 max_stream_analyze_duration = 7*AV_TIME_BASE;
3529 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3530 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3532 for (i = 0; i < ic->nb_streams; i++) {
3533 const AVCodec *codec;
3534 AVDictionary *thread_opt = NULL;
3535 st = ic->streams[i];
3536 avctx = st->internal->avctx;
3538 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3539 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3540 /* if (!st->time_base.num)
3542 if (!avctx->time_base.num)
3543 avctx->time_base = st->time_base;
3546 /* check if the caller has overridden the codec id */
3547 #if FF_API_LAVF_AVCTX
3548 FF_DISABLE_DEPRECATION_WARNINGS
3549 if (st->codec->codec_id != st->internal->orig_codec_id) {
3550 st->codecpar->codec_id = st->codec->codec_id;
3551 st->codecpar->codec_type = st->codec->codec_type;
3552 st->internal->orig_codec_id = st->codec->codec_id;
3554 FF_ENABLE_DEPRECATION_WARNINGS
3556 // only for the split stuff
3557 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3558 st->parser = av_parser_init(st->codecpar->codec_id);
3560 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3561 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3562 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3563 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3565 } else if (st->need_parsing) {
3566 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3567 "%s, packets or times may be invalid.\n",
3568 avcodec_get_name(st->codecpar->codec_id));
3572 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3573 st->internal->orig_codec_id = st->codecpar->codec_id;
3575 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3577 goto find_stream_info_err;
3578 if (st->request_probe <= 0)
3579 st->internal->avctx_inited = 1;
3581 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3583 /* Force thread count to 1 since the H.264 decoder will not extract
3584 * SPS and PPS to extradata during multi-threaded decoding. */
3585 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3587 if (ic->codec_whitelist)
3588 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3590 /* Ensure that subtitle_header is properly set. */
3591 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3592 && codec && !avctx->codec) {
3593 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3594 av_log(ic, AV_LOG_WARNING,
3595 "Failed to open codec in %s\n",__FUNCTION__);
3598 // Try to just open decoders, in case this is enough to get parameters.
3599 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3600 if (codec && !avctx->codec)
3601 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3602 av_log(ic, AV_LOG_WARNING,
3603 "Failed to open codec in %s\n",__FUNCTION__);
3606 av_dict_free(&thread_opt);
3609 for (i = 0; i < ic->nb_streams; i++) {
3610 #if FF_API_R_FRAME_RATE
3611 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3613 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3614 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3619 int analyzed_all_streams;
3620 if (ff_check_interrupt(&ic->interrupt_callback)) {
3622 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3626 /* check if one codec still needs to be handled */
3627 for (i = 0; i < ic->nb_streams; i++) {
3628 int fps_analyze_framecount = 20;
3630 st = ic->streams[i];
3631 if (!has_codec_parameters(st, NULL))
3633 /* If the timebase is coarse (like the usual millisecond precision
3634 * of mkv), we need to analyze more frames to reliably arrive at
3635 * the correct fps. */
3636 if (av_q2d(st->time_base) > 0.0005)
3637 fps_analyze_framecount *= 2;
3638 if (!tb_unreliable(st->internal->avctx))
3639 fps_analyze_framecount = 0;
3640 if (ic->fps_probe_size >= 0)
3641 fps_analyze_framecount = ic->fps_probe_size;
3642 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3643 fps_analyze_framecount = 0;
3644 /* variable fps and no guess at the real fps */
3645 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3646 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3647 int count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3648 st->info->codec_info_duration_fields/2 :
3649 st->info->duration_count;
3650 if (count < fps_analyze_framecount)
3653 if (!st->internal->avctx->extradata &&
3654 (!st->internal->extract_extradata.inited ||
3655 st->internal->extract_extradata.bsf) &&
3656 extract_extradata_check(st))
3658 if (st->first_dts == AV_NOPTS_VALUE &&
3659 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3660 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3661 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3662 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3665 analyzed_all_streams = 0;
3666 if (!missing_streams || !*missing_streams)
3667 if (i == ic->nb_streams) {
3668 analyzed_all_streams = 1;
3669 /* NOTE: If the format has no header, then we need to read some
3670 * packets to get most of the streams, so we cannot stop here. */
3671 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3672 /* If we found the info for all the codecs, we can stop. */
3674 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3679 /* We did not get all the codec info, but we read too much data. */
3680 if (read_size >= probesize) {
3682 av_log(ic, AV_LOG_DEBUG,
3683 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3684 for (i = 0; i < ic->nb_streams; i++)
3685 if (!ic->streams[i]->r_frame_rate.num &&
3686 ic->streams[i]->info->duration_count <= 1 &&
3687 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3688 strcmp(ic->iformat->name, "image2"))
3689 av_log(ic, AV_LOG_WARNING,
3690 "Stream #%d: not enough frames to estimate rate; "
3691 "consider increasing probesize\n", i);
3695 /* NOTE: A new stream can be added there if no header in file
3696 * (AVFMTCTX_NOHEADER). */
3697 ret = read_frame_internal(ic, &pkt1);
3698 if (ret == AVERROR(EAGAIN))
3709 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3710 ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
3711 &ic->internal->packet_buffer_end, 0);
3713 goto find_stream_info_err;
3716 st = ic->streams[pkt->stream_index];
3717 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3718 read_size += pkt->size;
3720 avctx = st->internal->avctx;
3721 if (!st->internal->avctx_inited) {
3722 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3724 goto find_stream_info_err;
3725 st->internal->avctx_inited = 1;
3728 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3729 /* check for non-increasing dts */
3730 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3731 st->info->fps_last_dts >= pkt->dts) {
3732 av_log(ic, AV_LOG_DEBUG,
3733 "Non-increasing DTS in stream %d: packet %d with DTS "
3734 "%"PRId64", packet %d with DTS %"PRId64"\n",
3735 st->index, st->info->fps_last_dts_idx,
3736 st->info->fps_last_dts, st->codec_info_nb_frames,
3738 st->info->fps_first_dts =
3739 st->info->fps_last_dts = AV_NOPTS_VALUE;
3741 /* Check for a discontinuity in dts. If the difference in dts
3742 * is more than 1000 times the average packet duration in the
3743 * sequence, we treat it as a discontinuity. */
3744 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3745 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3746 (pkt->dts - st->info->fps_last_dts) / 1000 >
3747 (st->info->fps_last_dts - st->info->fps_first_dts) /
3748 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3749 av_log(ic, AV_LOG_WARNING,
3750 "DTS discontinuity in stream %d: packet %d with DTS "
3751 "%"PRId64", packet %d with DTS %"PRId64"\n",
3752 st->index, st->info->fps_last_dts_idx,
3753 st->info->fps_last_dts, st->codec_info_nb_frames,
3755 st->info->fps_first_dts =
3756 st->info->fps_last_dts = AV_NOPTS_VALUE;
3759 /* update stored dts values */
3760 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3761 st->info->fps_first_dts = pkt->dts;
3762 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3764 st->info->fps_last_dts = pkt->dts;
3765 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3767 if (st->codec_info_nb_frames>1) {
3771 if (st->time_base.den > 0)
3772 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3773 if (st->avg_frame_rate.num > 0)
3774 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3777 && st->codec_info_nb_frames>30
3778 && st->info->fps_first_dts != AV_NOPTS_VALUE
3779 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3780 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3782 if (analyzed_all_streams) limit = max_analyze_duration;
3783 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3784 else limit = max_stream_analyze_duration;
3787 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3789 t, pkt->stream_index);
3790 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3791 av_packet_unref(pkt);
3794 if (pkt->duration) {
3795 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3796 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3798 st->info->codec_info_duration += pkt->duration;
3799 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3802 #if FF_API_R_FRAME_RATE
3803 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
3804 ff_rfps_add_frame(ic, st, pkt->dts);
3806 if (!st->internal->avctx->extradata) {
3807 ret = extract_extradata(st, pkt);
3809 goto find_stream_info_err;
3812 /* If still no information, we try to open the codec and to
3813 * decompress the frame. We try to avoid that in most cases as
3814 * it takes longer and uses more memory. For MPEG-4, we need to
3815 * decompress for QuickTime.
3817 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3818 * least one frame of codec data, this makes sure the codec initializes
3819 * the channel configuration and does not only trust the values from
3821 try_decode_frame(ic, st, pkt,
3822 (options && i < orig_nb_streams) ? &options[i] : NULL);
3824 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3825 av_packet_unref(pkt);
3827 st->codec_info_nb_frames++;
3833 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3834 st = ic->streams[stream_index];
3835 avctx = st->internal->avctx;
3836 if (!has_codec_parameters(st, NULL)) {
3837 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3838 if (codec && !avctx->codec) {
3839 AVDictionary *opts = NULL;
3840 if (ic->codec_whitelist)
3841 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3842 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3843 av_log(ic, AV_LOG_WARNING,
3844 "Failed to open codec in %s\n",__FUNCTION__);
3845 av_dict_free(&opts);
3849 // EOF already reached while reading the stream above.
3850 // So continue with reoordering DTS with whatever delay we have.
3851 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3852 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3858 AVPacket empty_pkt = { 0 };
3860 av_init_packet(&empty_pkt);
3862 for (i = 0; i < ic->nb_streams; i++) {
3864 st = ic->streams[i];
3866 /* flush the decoders */
3867 if (st->info->found_decoder == 1) {
3869 err = try_decode_frame(ic, st, &empty_pkt,
3870 (options && i < orig_nb_streams)
3871 ? &options[i] : NULL);
3872 } while (err > 0 && !has_codec_parameters(st, NULL));
3875 av_log(ic, AV_LOG_INFO,
3876 "decoding for stream %d failed\n", st->index);
3882 // close codecs which were opened in try_decode_frame()
3883 for (i = 0; i < ic->nb_streams; i++) {
3884 st = ic->streams[i];
3885 avcodec_close(st->internal->avctx);
3888 ff_rfps_calculate(ic);
3890 for (i = 0; i < ic->nb_streams; i++) {
3891 st = ic->streams[i];
3892 avctx = st->internal->avctx;
3893 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3894 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3895 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3896 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3897 avctx->codec_tag= tag;
3900 /* estimate average framerate if not set by demuxer */
3901 if (st->info->codec_info_duration_fields &&
3902 !st->avg_frame_rate.num &&
3903 st->info->codec_info_duration) {
3905 double best_error = 0.01;
3907 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3908 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3909 st->info->codec_info_duration < 0)
3911 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3912 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3913 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3915 /* Round guessed framerate to a "standard" framerate if it's
3916 * within 1% of the original estimate. */
3917 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3918 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3919 double error = fabs(av_q2d(st->avg_frame_rate) /
3920 av_q2d(std_fps) - 1);
3922 if (error < best_error) {
3924 best_fps = std_fps.num;
3928 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3929 best_fps, 12 * 1001, INT_MAX);
3932 if (!st->r_frame_rate.num) {
3933 if ( avctx->time_base.den * (int64_t) st->time_base.num
3934 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
3935 st->r_frame_rate.num = avctx->time_base.den;
3936 st->r_frame_rate.den = avctx->time_base.num * avctx->ticks_per_frame;
3938 st->r_frame_rate.num = st->time_base.den;
3939 st->r_frame_rate.den = st->time_base.num;
3942 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3943 AVRational hw_ratio = { avctx->height, avctx->width };
3944 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3947 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3948 if (!avctx->bits_per_coded_sample)
3949 avctx->bits_per_coded_sample =
3950 av_get_bits_per_sample(avctx->codec_id);
3951 // set stream disposition based on audio service type
3952 switch (avctx->audio_service_type) {
3953 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3954 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3956 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3957 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3959 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3960 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
3962 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3963 st->disposition = AV_DISPOSITION_COMMENT;
3965 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3966 st->disposition = AV_DISPOSITION_KARAOKE;
3973 estimate_timings(ic, old_offset);
3975 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
3977 if (ret >= 0 && ic->nb_streams)
3978 /* We could not have all the codec parameters before EOF. */
3980 for (i = 0; i < ic->nb_streams; i++) {
3982 st = ic->streams[i];
3984 /* if no packet was ever seen, update context now for has_codec_parameters */
3985 if (!st->internal->avctx_inited) {
3986 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3987 st->codecpar->format == AV_SAMPLE_FMT_NONE)
3988 st->codecpar->format = st->internal->avctx->sample_fmt;
3989 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
3991 goto find_stream_info_err;
3993 if (!has_codec_parameters(st, &errmsg)) {
3995 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
3996 av_log(ic, AV_LOG_WARNING,
3997 "Could not find codec parameters for stream %d (%s): %s\n"
3998 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4005 compute_chapters_end(ic);
4007 /* update the stream parameters from the internal codec contexts */
4008 for (i = 0; i < ic->nb_streams; i++) {
4009 st = ic->streams[i];
4011 if (st->internal->avctx_inited) {
4012 int orig_w = st->codecpar->width;
4013 int orig_h = st->codecpar->height;
4014 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4016 goto find_stream_info_err;
4017 // The decoder might reduce the video size by the lowres factor.
4018 if (av_codec_get_lowres(st->internal->avctx) && orig_w) {
4019 st->codecpar->width = orig_w;
4020 st->codecpar->height = orig_h;
4024 #if FF_API_LAVF_AVCTX
4025 FF_DISABLE_DEPRECATION_WARNINGS
4026 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4028 goto find_stream_info_err;
4030 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4031 // by the lowres factor.
4032 if (av_codec_get_lowres(st->internal->avctx) && st->internal->avctx->width) {
4033 av_codec_set_lowres(st->codec, av_codec_get_lowres(st->internal->avctx));
4034 st->codec->width = st->internal->avctx->width;
4035 st->codec->height = st->internal->avctx->height;
4038 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4039 st->codec->time_base = st->internal->avctx->time_base;
4040 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4042 st->codec->framerate = st->avg_frame_rate;
4044 if (st->internal->avctx->subtitle_header) {
4045 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4046 if (!st->codec->subtitle_header)
4047 goto find_stream_info_err;
4048 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4049 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4050 st->codec->subtitle_header_size);
4053 // Fields unavailable in AVCodecParameters
4054 st->codec->coded_width = st->internal->avctx->coded_width;
4055 st->codec->coded_height = st->internal->avctx->coded_height;
4056 st->codec->properties = st->internal->avctx->properties;
4057 FF_ENABLE_DEPRECATION_WARNINGS
4060 st->internal->avctx_inited = 0;
4063 find_stream_info_err:
4064 for (i = 0; i < ic->nb_streams; i++) {
4065 st = ic->streams[i];
4067 av_freep(&st->info->duration_error);
4068 av_freep(&ic->streams[i]->info);
4069 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4070 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4073 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4074 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4078 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4082 for (i = 0; i < ic->nb_programs; i++) {
4083 if (ic->programs[i] == last) {
4087 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4088 if (ic->programs[i]->stream_index[j] == s)
4089 return ic->programs[i];
4095 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4096 int wanted_stream_nb, int related_stream,
4097 AVCodec **decoder_ret, int flags)
4099 int i, nb_streams = ic->nb_streams;
4100 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
4101 unsigned *program = NULL;
4102 const AVCodec *decoder = NULL, *best_decoder = NULL;
4104 if (related_stream >= 0 && wanted_stream_nb < 0) {
4105 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4107 program = p->stream_index;
4108 nb_streams = p->nb_stream_indexes;
4111 for (i = 0; i < nb_streams; i++) {
4112 int real_stream_index = program ? program[i] : i;
4113 AVStream *st = ic->streams[real_stream_index];
4114 AVCodecParameters *par = st->codecpar;
4115 if (par->codec_type != type)
4117 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4119 if (wanted_stream_nb != real_stream_index &&
4120 st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED |
4121 AV_DISPOSITION_VISUAL_IMPAIRED))
4123 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4126 decoder = find_decoder(ic, st, par->codec_id);
4129 ret = AVERROR_DECODER_NOT_FOUND;
4133 count = st->codec_info_nb_frames;
4134 bitrate = par->bit_rate;
4135 multiframe = FFMIN(5, count);
4136 if ((best_multiframe > multiframe) ||
4137 (best_multiframe == multiframe && best_bitrate > bitrate) ||
4138 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4141 best_bitrate = bitrate;
4142 best_multiframe = multiframe;
4143 ret = real_stream_index;
4144 best_decoder = decoder;
4145 if (program && i == nb_streams - 1 && ret < 0) {
4147 nb_streams = ic->nb_streams;
4148 /* no related stream found, try again with everything */
4153 *decoder_ret = (AVCodec*)best_decoder;
4157 /*******************************************************/
4159 int av_read_play(AVFormatContext *s)
4161 if (s->iformat->read_play)
4162 return s->iformat->read_play(s);
4164 return avio_pause(s->pb, 0);
4165 return AVERROR(ENOSYS);
4168 int av_read_pause(AVFormatContext *s)
4170 if (s->iformat->read_pause)
4171 return s->iformat->read_pause(s);
4173 return avio_pause(s->pb, 1);
4174 return AVERROR(ENOSYS);
4177 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4182 dst->time_base = src->time_base;
4183 dst->nb_frames = src->nb_frames;
4184 dst->disposition = src->disposition;
4185 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4186 dst->avg_frame_rate = src->avg_frame_rate;
4187 dst->r_frame_rate = src->r_frame_rate;
4189 av_dict_free(&dst->metadata);
4190 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4194 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4198 /* Free existing side data*/
4199 for (i = 0; i < dst->nb_side_data; i++)
4200 av_free(dst->side_data[i].data);
4201 av_freep(&dst->side_data);
4202 dst->nb_side_data = 0;
4204 /* Copy side data if present */
4205 if (src->nb_side_data) {
4206 dst->side_data = av_mallocz_array(src->nb_side_data,
4207 sizeof(AVPacketSideData));
4208 if (!dst->side_data)
4209 return AVERROR(ENOMEM);
4210 dst->nb_side_data = src->nb_side_data;
4212 for (i = 0; i < src->nb_side_data; i++) {
4213 uint8_t *data = av_memdup(src->side_data[i].data,
4214 src->side_data[i].size);
4216 return AVERROR(ENOMEM);
4217 dst->side_data[i].type = src->side_data[i].type;
4218 dst->side_data[i].size = src->side_data[i].size;
4219 dst->side_data[i].data = data;
4223 av_freep(&dst->recommended_encoder_configuration);
4224 if (src->recommended_encoder_configuration) {
4225 const char *conf_str = src->recommended_encoder_configuration;
4226 dst->recommended_encoder_configuration = av_strdup(conf_str);
4227 if (!dst->recommended_encoder_configuration)
4228 return AVERROR(ENOMEM);
4234 static void free_stream(AVStream **pst)
4236 AVStream *st = *pst;
4242 for (i = 0; i < st->nb_side_data; i++)
4243 av_freep(&st->side_data[i].data);
4244 av_freep(&st->side_data);
4247 av_parser_close(st->parser);
4249 if (st->attached_pic.data)
4250 av_packet_unref(&st->attached_pic);
4253 avcodec_free_context(&st->internal->avctx);
4254 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4255 av_bsf_free(&st->internal->bsfcs[i]);
4256 av_freep(&st->internal->bsfcs);
4258 av_bsf_free(&st->internal->extract_extradata.bsf);
4259 av_packet_free(&st->internal->extract_extradata.pkt);
4261 av_freep(&st->internal);
4263 av_dict_free(&st->metadata);
4264 avcodec_parameters_free(&st->codecpar);
4265 av_freep(&st->probe_data.buf);
4266 av_freep(&st->index_entries);
4267 #if FF_API_LAVF_AVCTX
4268 FF_DISABLE_DEPRECATION_WARNINGS
4269 av_freep(&st->codec->extradata);
4270 av_freep(&st->codec->subtitle_header);
4271 av_freep(&st->codec);
4272 FF_ENABLE_DEPRECATION_WARNINGS
4274 av_freep(&st->priv_data);
4276 av_freep(&st->info->duration_error);
4277 av_freep(&st->info);
4278 av_freep(&st->recommended_encoder_configuration);
4279 av_freep(&st->priv_pts);
4284 void ff_free_stream(AVFormatContext *s, AVStream *st)
4286 av_assert0(s->nb_streams>0);
4287 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4289 free_stream(&s->streams[ --s->nb_streams ]);
4292 void avformat_free_context(AVFormatContext *s)
4300 if (s->iformat && s->iformat->priv_class && s->priv_data)
4301 av_opt_free(s->priv_data);
4302 if (s->oformat && s->oformat->priv_class && s->priv_data)
4303 av_opt_free(s->priv_data);
4305 for (i = s->nb_streams - 1; i >= 0; i--)
4306 ff_free_stream(s, s->streams[i]);
4309 for (i = s->nb_programs - 1; i >= 0; i--) {
4310 av_dict_free(&s->programs[i]->metadata);
4311 av_freep(&s->programs[i]->stream_index);
4312 av_freep(&s->programs[i]);
4314 av_freep(&s->programs);
4315 av_freep(&s->priv_data);
4316 while (s->nb_chapters--) {
4317 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4318 av_freep(&s->chapters[s->nb_chapters]);
4320 av_freep(&s->chapters);
4321 av_dict_free(&s->metadata);
4322 av_dict_free(&s->internal->id3v2_meta);
4323 av_freep(&s->streams);
4324 av_freep(&s->internal);
4325 flush_packet_queue(s);
4329 void avformat_close_input(AVFormatContext **ps)
4340 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4341 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4344 flush_packet_queue(s);
4347 if (s->iformat->read_close)
4348 s->iformat->read_close(s);
4350 avformat_free_context(s);
4357 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4363 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4364 if (s->max_streams < INT_MAX/sizeof(*streams))
4365 av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter (%d), see the documentation if you wish to increase it\n", s->max_streams);
4368 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4371 s->streams = streams;
4373 st = av_mallocz(sizeof(AVStream));
4376 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4380 st->info->last_dts = AV_NOPTS_VALUE;
4382 #if FF_API_LAVF_AVCTX
4383 FF_DISABLE_DEPRECATION_WARNINGS
4384 st->codec = avcodec_alloc_context3(c);
4390 FF_ENABLE_DEPRECATION_WARNINGS
4393 st->internal = av_mallocz(sizeof(*st->internal));
4397 st->codecpar = avcodec_parameters_alloc();
4401 st->internal->avctx = avcodec_alloc_context3(NULL);
4402 if (!st->internal->avctx)
4406 #if FF_API_LAVF_AVCTX
4407 FF_DISABLE_DEPRECATION_WARNINGS
4408 /* no default bitrate if decoding */
4409 st->codec->bit_rate = 0;
4410 FF_ENABLE_DEPRECATION_WARNINGS
4413 /* default pts setting is MPEG-like */
4414 avpriv_set_pts_info(st, 33, 1, 90000);
4415 /* we set the current DTS to 0 so that formats without any timestamps
4416 * but durations get some timestamps, formats with some unknown
4417 * timestamps have their first few packets buffered and the
4418 * timestamps corrected before they are returned to the user */
4419 st->cur_dts = RELATIVE_TS_BASE;
4421 st->cur_dts = AV_NOPTS_VALUE;
4424 st->index = s->nb_streams;
4425 st->start_time = AV_NOPTS_VALUE;
4426 st->duration = AV_NOPTS_VALUE;
4427 st->first_dts = AV_NOPTS_VALUE;
4428 st->probe_packets = MAX_PROBE_PACKETS;
4429 st->pts_wrap_reference = AV_NOPTS_VALUE;
4430 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4432 st->last_IP_pts = AV_NOPTS_VALUE;
4433 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4434 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4435 st->pts_buffer[i] = AV_NOPTS_VALUE;
4437 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4439 #if FF_API_R_FRAME_RATE
4440 st->info->last_dts = AV_NOPTS_VALUE;
4442 st->info->fps_first_dts = AV_NOPTS_VALUE;
4443 st->info->fps_last_dts = AV_NOPTS_VALUE;
4445 st->inject_global_side_data = s->internal->inject_global_side_data;
4447 st->internal->need_context_update = 1;
4449 s->streams[s->nb_streams++] = st;
4456 AVProgram *av_new_program(AVFormatContext *ac, int id)
4458 AVProgram *program = NULL;
4461 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4463 for (i = 0; i < ac->nb_programs; i++)
4464 if (ac->programs[i]->id == id)
4465 program = ac->programs[i];
4468 program = av_mallocz(sizeof(AVProgram));
4471 dynarray_add(&ac->programs, &ac->nb_programs, program);
4472 program->discard = AVDISCARD_NONE;
4475 program->pts_wrap_reference = AV_NOPTS_VALUE;
4476 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4478 program->start_time =
4479 program->end_time = AV_NOPTS_VALUE;
4484 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4485 int64_t start, int64_t end, const char *title)
4487 AVChapter *chapter = NULL;
4490 if (end != AV_NOPTS_VALUE && start > end) {
4491 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4495 for (i = 0; i < s->nb_chapters; i++)
4496 if (s->chapters[i]->id == id)
4497 chapter = s->chapters[i];
4500 chapter = av_mallocz(sizeof(AVChapter));
4503 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4505 av_dict_set(&chapter->metadata, "title", title, 0);
4507 chapter->time_base = time_base;
4508 chapter->start = start;
4514 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4517 AVProgram *program = NULL;
4520 if (idx >= ac->nb_streams) {
4521 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4525 for (i = 0; i < ac->nb_programs; i++) {
4526 if (ac->programs[i]->id != progid)
4528 program = ac->programs[i];
4529 for (j = 0; j < program->nb_stream_indexes; j++)
4530 if (program->stream_index[j] == idx)
4533 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4536 program->stream_index = tmp;
4537 program->stream_index[program->nb_stream_indexes++] = idx;
4542 uint64_t ff_ntp_time(void)
4544 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4547 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4550 char *q, buf1[20], c;
4551 int nd, len, percentd_found;
4563 while (av_isdigit(*p))
4564 nd = nd * 10 + *p++ - '0';
4566 } while (av_isdigit(c));
4572 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4577 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4579 if ((q - buf + len) > buf_size - 1)
4581 memcpy(q, buf1, len);
4589 if ((q - buf) < buf_size - 1)
4593 if (!percentd_found)
4602 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4604 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4607 void av_url_split(char *proto, int proto_size,
4608 char *authorization, int authorization_size,
4609 char *hostname, int hostname_size,
4610 int *port_ptr, char *path, int path_size, const char *url)
4612 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4618 if (authorization_size > 0)
4619 authorization[0] = 0;
4620 if (hostname_size > 0)
4625 /* parse protocol */
4626 if ((p = strchr(url, ':'))) {
4627 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4634 /* no protocol means plain filename */
4635 av_strlcpy(path, url, path_size);
4639 /* separate path from hostname */
4640 ls = strchr(p, '/');
4641 ls2 = strchr(p, '?');
4645 ls = FFMIN(ls, ls2);
4647 av_strlcpy(path, ls, path_size);
4649 ls = &p[strlen(p)]; // XXX
4651 /* the rest is hostname, use that to parse auth/port */
4653 /* authorization (user[:pass]@hostname) */
4655 while ((at = strchr(p, '@')) && at < ls) {
4656 av_strlcpy(authorization, at2,
4657 FFMIN(authorization_size, at + 1 - at2));
4658 p = at + 1; /* skip '@' */
4661 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4663 av_strlcpy(hostname, p + 1,
4664 FFMIN(hostname_size, brk - p));
4665 if (brk[1] == ':' && port_ptr)
4666 *port_ptr = atoi(brk + 2);
4667 } else if ((col = strchr(p, ':')) && col < ls) {
4668 av_strlcpy(hostname, p,
4669 FFMIN(col + 1 - p, hostname_size));
4671 *port_ptr = atoi(col + 1);
4673 av_strlcpy(hostname, p,
4674 FFMIN(ls + 1 - p, hostname_size));
4678 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4681 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4684 'C', 'D', 'E', 'F' };
4685 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4688 'c', 'd', 'e', 'f' };
4689 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4691 for (i = 0; i < s; i++) {
4692 buff[i * 2] = hex_table[src[i] >> 4];
4693 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4699 int ff_hex_to_data(uint8_t *data, const char *p)
4706 p += strspn(p, SPACE_CHARS);
4709 c = av_toupper((unsigned char) *p++);
4710 if (c >= '0' && c <= '9')
4712 else if (c >= 'A' && c <= 'F')
4727 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4728 unsigned int pts_num, unsigned int pts_den)
4731 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4732 if (new_tb.num != pts_num)
4733 av_log(NULL, AV_LOG_DEBUG,
4734 "st:%d removing common factor %d from timebase\n",
4735 s->index, pts_num / new_tb.num);
4737 av_log(NULL, AV_LOG_WARNING,
4738 "st:%d has too large timebase, reducing\n", s->index);
4740 if (new_tb.num <= 0 || new_tb.den <= 0) {
4741 av_log(NULL, AV_LOG_ERROR,
4742 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4743 new_tb.num, new_tb.den,
4747 s->time_base = new_tb;
4748 #if FF_API_LAVF_AVCTX
4749 FF_DISABLE_DEPRECATION_WARNINGS
4750 av_codec_set_pkt_timebase(s->codec, new_tb);
4751 FF_ENABLE_DEPRECATION_WARNINGS
4753 av_codec_set_pkt_timebase(s->internal->avctx, new_tb);
4754 s->pts_wrap_bits = pts_wrap_bits;
4757 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4760 const char *ptr = str;
4762 /* Parse key=value pairs. */
4765 char *dest = NULL, *dest_end;
4766 int key_len, dest_len = 0;
4768 /* Skip whitespace and potential commas. */
4769 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4776 if (!(ptr = strchr(key, '=')))
4779 key_len = ptr - key;
4781 callback_get_buf(context, key, key_len, &dest, &dest_len);
4782 dest_end = dest + dest_len - 1;
4786 while (*ptr && *ptr != '\"') {
4790 if (dest && dest < dest_end)
4794 if (dest && dest < dest_end)
4802 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4803 if (dest && dest < dest_end)
4811 int ff_find_stream_index(AVFormatContext *s, int id)
4814 for (i = 0; i < s->nb_streams; i++)
4815 if (s->streams[i]->id == id)
4820 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4824 unsigned int codec_tag;
4825 if (ofmt->query_codec)
4826 return ofmt->query_codec(codec_id, std_compliance);
4827 else if (ofmt->codec_tag)
4828 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4829 else if (codec_id == ofmt->video_codec ||
4830 codec_id == ofmt->audio_codec ||
4831 codec_id == ofmt->subtitle_codec ||
4832 codec_id == ofmt->data_codec)
4835 return AVERROR_PATCHWELCOME;
4838 int avformat_network_init(void)
4842 ff_network_inited_globally = 1;
4843 if ((ret = ff_network_init()) < 0)
4845 if ((ret = ff_tls_init()) < 0)
4851 int avformat_network_deinit(void)
4856 ff_network_inited_globally = 0;
4861 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4862 uint64_t channel_layout, int32_t sample_rate,
4863 int32_t width, int32_t height)
4869 return AVERROR(EINVAL);
4872 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4874 if (channel_layout) {
4876 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4880 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4882 if (width || height) {
4884 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4886 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4888 return AVERROR(ENOMEM);
4889 bytestream_put_le32(&data, flags);
4891 bytestream_put_le32(&data, channels);
4893 bytestream_put_le64(&data, channel_layout);
4895 bytestream_put_le32(&data, sample_rate);
4896 if (width || height) {
4897 bytestream_put_le32(&data, width);
4898 bytestream_put_le32(&data, height);
4903 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4905 AVRational undef = {0, 1};
4906 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4907 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4908 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4910 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4911 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4912 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4913 stream_sample_aspect_ratio = undef;
4915 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4916 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4917 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4918 frame_sample_aspect_ratio = undef;
4920 if (stream_sample_aspect_ratio.num)
4921 return stream_sample_aspect_ratio;
4923 return frame_sample_aspect_ratio;
4926 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4928 AVRational fr = st->r_frame_rate;
4929 AVRational codec_fr = st->internal->avctx->framerate;
4930 AVRational avg_fr = st->avg_frame_rate;
4932 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4933 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4938 if (st->internal->avctx->ticks_per_frame > 1) {
4939 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4940 (fr.num == 0 || av_q2d(codec_fr) < av_q2d(fr)*0.7 && fabs(1.0 - av_q2d(av_div_q(avg_fr, fr))) > 0.1))
4947 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4950 if (*spec <= '9' && *spec >= '0') /* opt:index */
4951 return strtol(spec, NULL, 0) == st->index;
4952 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4953 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
4954 enum AVMediaType type;
4958 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4959 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4960 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4961 case 'd': type = AVMEDIA_TYPE_DATA; break;
4962 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4963 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
4964 default: av_assert0(0);
4966 #if FF_API_LAVF_AVCTX
4967 FF_DISABLE_DEPRECATION_WARNINGS
4968 if (type != st->codecpar->codec_type
4969 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
4971 FF_ENABLE_DEPRECATION_WARNINGS
4973 if (type != st->codecpar->codec_type)
4976 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
4978 if (*spec++ == ':') { /* possibly followed by :index */
4979 int i, index = strtol(spec, NULL, 0);
4980 for (i = 0; i < s->nb_streams; i++) {
4981 #if FF_API_LAVF_AVCTX
4982 FF_DISABLE_DEPRECATION_WARNINGS
4983 if ((s->streams[i]->codecpar->codec_type == type
4984 || s->streams[i]->codec->codec_type == type
4986 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4988 return i == st->index;
4989 FF_ENABLE_DEPRECATION_WARNINGS
4991 if ((s->streams[i]->codecpar->codec_type == type) &&
4992 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4994 return i == st->index;
5000 } else if (*spec == 'p' && *(spec + 1) == ':') {
5004 prog_id = strtol(spec, &endptr, 0);
5005 for (i = 0; i < s->nb_programs; i++) {
5006 if (s->programs[i]->id != prog_id)
5009 if (*endptr++ == ':') {
5010 int stream_idx = strtol(endptr, NULL, 0);
5011 return stream_idx >= 0 &&
5012 stream_idx < s->programs[i]->nb_stream_indexes &&
5013 st->index == s->programs[i]->stream_index[stream_idx];
5016 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
5017 if (st->index == s->programs[i]->stream_index[j])
5021 } else if (*spec == '#' ||
5022 (*spec == 'i' && *(spec + 1) == ':')) {
5025 spec += 1 + (*spec == 'i');
5026 stream_id = strtol(spec, &endptr, 0);
5028 return stream_id == st->id;
5029 } else if (*spec == 'm' && *(spec + 1) == ':') {
5030 AVDictionaryEntry *tag;
5035 val = strchr(spec, ':');
5037 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5039 return AVERROR(ENOMEM);
5041 tag = av_dict_get(st->metadata, key, NULL, 0);
5043 if (!val || !strcmp(tag->value, val + 1))
5052 } else if (*spec == 'u') {
5053 AVCodecParameters *par = st->codecpar;
5054 #if FF_API_LAVF_AVCTX
5055 FF_DISABLE_DEPRECATION_WARNINGS
5056 AVCodecContext *codec = st->codec;
5057 FF_ENABLE_DEPRECATION_WARNINGS
5060 switch (par->codec_type) {
5061 case AVMEDIA_TYPE_AUDIO:
5062 val = par->sample_rate && par->channels;
5063 #if FF_API_LAVF_AVCTX
5064 val = val || (codec->sample_rate && codec->channels);
5066 if (par->format == AV_SAMPLE_FMT_NONE
5067 #if FF_API_LAVF_AVCTX
5068 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5073 case AVMEDIA_TYPE_VIDEO:
5074 val = par->width && par->height;
5075 #if FF_API_LAVF_AVCTX
5076 val = val || (codec->width && codec->height);
5078 if (par->format == AV_PIX_FMT_NONE
5079 #if FF_API_LAVF_AVCTX
5080 && codec->pix_fmt == AV_PIX_FMT_NONE
5085 case AVMEDIA_TYPE_UNKNOWN:
5092 #if FF_API_LAVF_AVCTX
5093 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
5095 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
5097 } else if (!*spec) /* empty specifier, matches everything */
5100 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5101 return AVERROR(EINVAL);
5104 int ff_generate_avci_extradata(AVStream *st)
5106 static const uint8_t avci100_1080p_extradata[] = {
5108 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5109 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5110 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5111 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5112 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5113 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5114 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5115 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5116 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5118 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5121 static const uint8_t avci100_1080i_extradata[] = {
5123 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5124 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5125 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5126 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5127 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5128 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5129 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5130 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5131 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5132 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5133 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5135 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5138 static const uint8_t avci50_1080p_extradata[] = {
5140 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5141 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5142 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5143 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5144 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5145 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5146 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5147 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5148 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5150 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5153 static const uint8_t avci50_1080i_extradata[] = {
5155 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5156 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5157 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5158 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5159 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5160 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5161 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5162 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5163 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5164 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5165 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5167 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5170 static const uint8_t avci100_720p_extradata[] = {
5172 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5173 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5174 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5175 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5176 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5177 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5178 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5179 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5180 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5181 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5183 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5186 static const uint8_t avci50_720p_extradata[] = {
5188 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5189 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5190 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5191 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5192 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5193 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5194 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5195 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5196 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5198 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5202 const uint8_t *data = NULL;
5205 if (st->codecpar->width == 1920) {
5206 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5207 data = avci100_1080p_extradata;
5208 size = sizeof(avci100_1080p_extradata);
5210 data = avci100_1080i_extradata;
5211 size = sizeof(avci100_1080i_extradata);
5213 } else if (st->codecpar->width == 1440) {
5214 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5215 data = avci50_1080p_extradata;
5216 size = sizeof(avci50_1080p_extradata);
5218 data = avci50_1080i_extradata;
5219 size = sizeof(avci50_1080i_extradata);
5221 } else if (st->codecpar->width == 1280) {
5222 data = avci100_720p_extradata;
5223 size = sizeof(avci100_720p_extradata);
5224 } else if (st->codecpar->width == 960) {
5225 data = avci50_720p_extradata;
5226 size = sizeof(avci50_720p_extradata);
5232 av_freep(&st->codecpar->extradata);
5233 if (ff_alloc_extradata(st->codecpar, size))
5234 return AVERROR(ENOMEM);
5235 memcpy(st->codecpar->extradata, data, size);
5240 #if FF_API_NOCONST_GET_SIDE_DATA
5241 uint8_t *av_stream_get_side_data(AVStream *st,
5242 enum AVPacketSideDataType type, int *size)
5244 uint8_t *av_stream_get_side_data(const AVStream *st,
5245 enum AVPacketSideDataType type, int *size)
5250 for (i = 0; i < st->nb_side_data; i++) {
5251 if (st->side_data[i].type == type) {
5253 *size = st->side_data[i].size;
5254 return st->side_data[i].data;
5260 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5261 uint8_t *data, size_t size)
5263 AVPacketSideData *sd, *tmp;
5266 for (i = 0; i < st->nb_side_data; i++) {
5267 sd = &st->side_data[i];
5269 if (sd->type == type) {
5270 av_freep(&sd->data);
5277 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5278 return AVERROR(ERANGE);
5280 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5282 return AVERROR(ENOMEM);
5285 st->side_data = tmp;
5288 sd = &st->side_data[st->nb_side_data - 1];
5296 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5300 uint8_t *data = av_malloc(size);
5305 ret = av_stream_add_side_data(st, type, data, size);
5314 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5317 const AVBitStreamFilter *bsf;
5319 AVCodecParameters *in_par;
5321 if (!(bsf = av_bsf_get_by_name(name))) {
5322 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5323 return AVERROR_BSF_NOT_FOUND;
5326 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5329 if (st->internal->nb_bsfcs) {
5330 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5331 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5333 in_par = st->codecpar;
5334 bsfc->time_base_in = st->time_base;
5337 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5342 if (args && bsfc->filter->priv_class) {
5343 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5344 const char * shorthand[2] = {NULL};
5347 shorthand[0] = opt->name;
5349 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5355 if ((ret = av_bsf_init(bsfc)) < 0) {
5360 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5365 av_log(NULL, AV_LOG_VERBOSE,
5366 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5367 name, args ? args : "");
5372 FF_DISABLE_DEPRECATION_WARNINGS
5373 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5374 AVBitStreamFilterContext *bsfc)
5378 AVPacket new_pkt = *pkt;
5379 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5380 &new_pkt.data, &new_pkt.size,
5381 pkt->data, pkt->size,
5382 pkt->flags & AV_PKT_FLAG_KEY);
5383 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5384 av_packet_unref(pkt);
5385 memset(pkt, 0, sizeof(*pkt));
5388 if(a == 0 && new_pkt.data != pkt->data) {
5389 uint8_t *t = av_malloc(new_pkt.size + AV_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
5391 memcpy(t, new_pkt.data, new_pkt.size);
5392 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5397 a = AVERROR(ENOMEM);
5401 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5402 av_buffer_default_free, NULL, 0);
5404 pkt->side_data = NULL;
5405 pkt->side_data_elems = 0;
5406 av_packet_unref(pkt);
5408 av_freep(&new_pkt.data);
5409 a = AVERROR(ENOMEM);
5413 av_log(codec, AV_LOG_ERROR,
5414 "Failed to open bitstream filter %s for stream %d with codec %s",
5415 bsfc->filter->name, pkt->stream_index,
5416 codec->codec ? codec->codec->name : "copy");
5426 FF_ENABLE_DEPRECATION_WARNINGS
5429 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5432 return AVERROR(EINVAL);
5434 if (!(s->oformat->flags & AVFMT_NOFILE))
5435 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5439 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5442 s->io_close(s, *pb);
5446 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5448 AVDictionaryEntry *entry;
5449 int64_t parsed_timestamp;
5451 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5452 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5453 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5456 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5463 int ff_standardize_creation_time(AVFormatContext *s)
5466 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5468 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5472 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5477 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5479 if (size != AVPALETTE_SIZE) {
5480 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5481 return AVERROR_INVALIDDATA;
5483 memcpy(palette, side_data, AVPALETTE_SIZE);
5487 if (ret == CONTAINS_PAL) {
5489 for (i = 0; i < AVPALETTE_COUNT; i++)
5490 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5497 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5502 ret = av_bprint_finalize(buf, &str);
5505 if (!av_bprint_is_complete(buf)) {
5507 return AVERROR(ENOMEM);
5510 par->extradata = str;
5511 /* Note: the string is NUL terminated (so extradata can be read as a
5512 * string), but the ending character is not accounted in the size (in
5513 * binary formats you are likely not supposed to mux that character). When
5514 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5516 par->extradata_size = buf->len;
5520 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5521 AVStream *ost, const AVStream *ist,
5522 enum AVTimebaseSource copy_tb)
5524 //TODO: use [io]st->internal->avctx
5525 const AVCodecContext *dec_ctx = ist->codec;
5526 AVCodecContext *enc_ctx = ost->codec;
5528 enc_ctx->time_base = ist->time_base;
5530 * Avi is a special case here because it supports variable fps but
5531 * having the fps and timebase differe significantly adds quite some
5534 if (!strcmp(ofmt->name, "avi")) {
5535 #if FF_API_R_FRAME_RATE
5536 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5537 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5538 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5539 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5540 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5541 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5542 enc_ctx->time_base.num = ist->r_frame_rate.den;
5543 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5544 enc_ctx->ticks_per_frame = 2;
5547 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5548 && av_q2d(ist->time_base) < 1.0/500
5549 || copy_tb == AVFMT_TBCF_DECODER) {
5550 enc_ctx->time_base = dec_ctx->time_base;
5551 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5552 enc_ctx->time_base.den *= 2;
5553 enc_ctx->ticks_per_frame = 2;
5555 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5556 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5557 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5558 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5559 && av_q2d(ist->time_base) < 1.0/500
5560 || copy_tb == AVFMT_TBCF_DECODER) {
5561 enc_ctx->time_base = dec_ctx->time_base;
5562 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5566 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5567 && dec_ctx->time_base.num < dec_ctx->time_base.den
5568 && dec_ctx->time_base.num > 0
5569 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5570 enc_ctx->time_base = dec_ctx->time_base;
5573 if (ost->avg_frame_rate.num)
5574 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5576 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5577 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5582 AVRational av_stream_get_codec_timebase(const AVStream *st)
5584 // See avformat_transfer_internal_stream_timing_info() TODO.
5585 #if FF_API_LAVF_AVCTX
5586 FF_DISABLE_DEPRECATION_WARNINGS
5587 return st->codec->time_base;
5588 FF_ENABLE_DEPRECATION_WARNINGS
5590 return st->internal->avctx->time_base;