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
26 #include "libavutil/avassert.h"
27 #include "libavutil/avstring.h"
28 #include "libavutil/dict.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/parseutils.h"
33 #include "libavutil/pixfmt.h"
34 #include "libavutil/thread.h"
35 #include "libavutil/time.h"
36 #include "libavutil/timestamp.h"
38 #include "libavcodec/bytestream.h"
39 #include "libavcodec/internal.h"
40 #include "libavcodec/packet_internal.h"
41 #include "libavcodec/raw.h"
44 #include "avio_internal.h"
52 #include "libavutil/ffversion.h"
53 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
55 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
59 * various utility functions for use within FFmpeg
62 unsigned avformat_version(void)
64 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
65 return LIBAVFORMAT_VERSION_INT;
68 const char *avformat_configuration(void)
70 return FFMPEG_CONFIGURATION;
73 const char *avformat_license(void)
75 #define LICENSE_PREFIX "libavformat license: "
76 return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
79 int ff_lock_avformat(void)
81 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
84 int ff_unlock_avformat(void)
86 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
89 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
91 static int is_relative(int64_t ts) {
92 return ts > (RELATIVE_TS_BASE - (1LL<<48));
96 * Wrap a given time stamp, if there is an indication for an overflow
99 * @param timestamp the time stamp to wrap
100 * @return resulting time stamp
102 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
104 if (st->internal->pts_wrap_behavior != AV_PTS_WRAP_IGNORE && st->pts_wrap_bits < 64 &&
105 st->internal->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
106 if (st->internal->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
107 timestamp < st->internal->pts_wrap_reference)
108 return timestamp + (1ULL << st->pts_wrap_bits);
109 else if (st->internal->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
110 timestamp >= st->internal->pts_wrap_reference)
111 return timestamp - (1ULL << st->pts_wrap_bits);
116 #if FF_API_FORMAT_GET_SET
117 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
118 #if FF_API_LAVF_FFSERVER
119 FF_DISABLE_DEPRECATION_WARNINGS
120 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
121 FF_ENABLE_DEPRECATION_WARNINGS
123 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
124 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
125 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
126 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
127 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
128 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
129 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
130 #if FF_API_OLD_OPEN_CALLBACKS
131 FF_DISABLE_DEPRECATION_WARNINGS
132 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
133 FF_ENABLE_DEPRECATION_WARNINGS
137 int64_t av_stream_get_end_pts(const AVStream *st)
139 if (st->internal->priv_pts) {
140 return st->internal->priv_pts->val;
142 return AV_NOPTS_VALUE;
145 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
150 void av_format_inject_global_side_data(AVFormatContext *s)
153 s->internal->inject_global_side_data = 1;
154 for (i = 0; i < s->nb_streams; i++) {
155 AVStream *st = s->streams[i];
156 st->internal->inject_global_side_data = 1;
160 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
162 av_assert0(!dst->codec_whitelist &&
163 !dst->format_whitelist &&
164 !dst->protocol_whitelist &&
165 !dst->protocol_blacklist);
166 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
167 dst->format_whitelist = av_strdup(src->format_whitelist);
168 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
169 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
170 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
171 || (src-> format_whitelist && !dst-> format_whitelist)
172 || (src->protocol_whitelist && !dst->protocol_whitelist)
173 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
174 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
175 return AVERROR(ENOMEM);
180 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
182 #if FF_API_LAVF_AVCTX
183 FF_DISABLE_DEPRECATION_WARNINGS
184 if (st->codec->codec)
185 return st->codec->codec;
186 FF_ENABLE_DEPRECATION_WARNINGS
189 switch (st->codecpar->codec_type) {
190 case AVMEDIA_TYPE_VIDEO:
191 if (s->video_codec) return s->video_codec;
193 case AVMEDIA_TYPE_AUDIO:
194 if (s->audio_codec) return s->audio_codec;
196 case AVMEDIA_TYPE_SUBTITLE:
197 if (s->subtitle_codec) return s->subtitle_codec;
201 return avcodec_find_decoder(codec_id);
204 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
206 const AVCodec *codec;
208 #if CONFIG_H264_DECODER
209 /* Other parts of the code assume this decoder to be used for h264,
210 * so force it if possible. */
211 if (codec_id == AV_CODEC_ID_H264)
212 return avcodec_find_decoder_by_name("h264");
215 codec = find_decoder(s, st, codec_id);
219 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
220 const AVCodec *probe_codec = NULL;
222 while ((probe_codec = av_codec_iterate(&iter))) {
223 if (probe_codec->id == codec->id &&
224 av_codec_is_decoder(probe_codec) &&
225 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
234 #if FF_API_FORMAT_GET_SET
235 int av_format_get_probe_score(const AVFormatContext *s)
237 return s->probe_score;
241 /* an arbitrarily chosen "sane" max packet size -- 50M */
242 #define SANE_CHUNK_SIZE (50000000)
244 int ffio_limit(AVIOContext *s, int size)
246 if (s->maxsize>= 0) {
247 int64_t pos = avio_tell(s);
248 int64_t remaining= s->maxsize - pos;
249 if (remaining < size) {
250 int64_t newsize = avio_size(s);
251 if (!s->maxsize || s->maxsize<newsize)
252 s->maxsize = newsize - !newsize;
253 if (pos > s->maxsize && s->maxsize >= 0)
254 s->maxsize = AVERROR(EIO);
256 remaining = s->maxsize - pos;
259 if (s->maxsize >= 0 && remaining < size && size > 1) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG,
261 "Truncating packet of size %d to %"PRId64"\n",
262 size, remaining + !remaining);
263 size = remaining + !remaining;
269 /* Read the data in sane-sized chunks and append to pkt.
270 * Return the number of bytes read or an error. */
271 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
273 int orig_size = pkt->size;
277 int prev_size = pkt->size;
280 /* When the caller requests a lot of data, limit it to the amount
281 * left in file or SANE_CHUNK_SIZE when it is not known. */
283 if (read_size > SANE_CHUNK_SIZE/10) {
284 read_size = ffio_limit(s, read_size);
285 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
287 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
290 ret = av_grow_packet(pkt, read_size);
294 ret = avio_read(s, pkt->data + prev_size, read_size);
295 if (ret != read_size) {
296 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
303 pkt->flags |= AV_PKT_FLAG_CORRUPT;
306 av_packet_unref(pkt);
307 return pkt->size > orig_size ? pkt->size - orig_size : ret;
310 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
312 #if FF_API_INIT_PACKET
313 FF_DISABLE_DEPRECATION_WARNINGS
317 FF_ENABLE_DEPRECATION_WARNINGS
319 av_packet_unref(pkt);
321 pkt->pos = avio_tell(s);
323 return append_packet_chunked(s, pkt, size);
326 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
329 return av_get_packet(s, pkt, size);
330 return append_packet_chunked(s, pkt, size);
333 int av_filename_number_test(const char *filename)
337 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
340 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
343 static const struct {
346 enum AVMediaType type;
348 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
349 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
350 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
351 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
352 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
353 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
354 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
355 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
356 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
357 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
358 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
359 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
360 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
361 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
362 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
366 const AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
370 av_log(s, AV_LOG_DEBUG,
371 "Probe with size=%d, packets=%d detected %s with score=%d\n",
372 pd->buf_size, s->max_probe_packets - st->probe_packets,
374 for (i = 0; fmt_id_type[i].name; i++) {
375 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
376 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
377 st->codecpar->sample_rate)
379 if (st->internal->request_probe > score &&
380 st->codecpar->codec_id != fmt_id_type[i].id)
382 st->codecpar->codec_id = fmt_id_type[i].id;
383 st->codecpar->codec_type = fmt_id_type[i].type;
384 st->internal->need_context_update = 1;
385 #if FF_API_LAVF_AVCTX
386 FF_DISABLE_DEPRECATION_WARNINGS
387 st->codec->codec_type = st->codecpar->codec_type;
388 st->codec->codec_id = st->codecpar->codec_id;
389 FF_ENABLE_DEPRECATION_WARNINGS
398 /************************************************************/
399 /* input media file */
401 #if FF_API_DEMUXER_OPEN
402 int av_demuxer_open(AVFormatContext *ic) {
405 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
406 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
407 return AVERROR(EINVAL);
410 if (ic->iformat->read_header) {
411 err = ic->iformat->read_header(ic);
416 if (ic->pb && !ic->internal->data_offset)
417 ic->internal->data_offset = avio_tell(ic->pb);
422 /* Open input file and probe the format if necessary. */
423 static int init_input(AVFormatContext *s, const char *filename,
424 AVDictionary **options)
427 AVProbeData pd = { filename, NULL, 0 };
428 int score = AVPROBE_SCORE_RETRY;
431 s->flags |= AVFMT_FLAG_CUSTOM_IO;
433 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
434 s, 0, s->format_probesize);
435 else if (s->iformat->flags & AVFMT_NOFILE)
436 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
437 "will be ignored with AVFMT_NOFILE format.\n");
441 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
442 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
445 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
450 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
451 s, 0, s->format_probesize);
454 int avformat_queue_attached_pictures(AVFormatContext *s)
457 for (i = 0; i < s->nb_streams; i++)
458 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
459 s->streams[i]->discard < AVDISCARD_ALL) {
460 if (s->streams[i]->attached_pic.size <= 0) {
461 av_log(s, AV_LOG_WARNING,
462 "Attached picture on stream %d has invalid size, "
467 ret = avpriv_packet_list_put(&s->internal->raw_packet_buffer,
468 &s->internal->raw_packet_buffer_end,
469 &s->streams[i]->attached_pic,
477 static int update_stream_avctx(AVFormatContext *s)
480 for (i = 0; i < s->nb_streams; i++) {
481 AVStream *st = s->streams[i];
483 if (!st->internal->need_context_update)
486 /* close parser, because it depends on the codec */
487 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
488 av_parser_close(st->parser);
492 /* update internal codec context, for the parser */
493 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
497 #if FF_API_LAVF_AVCTX
498 FF_DISABLE_DEPRECATION_WARNINGS
499 /* update deprecated public codec context */
500 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
503 FF_ENABLE_DEPRECATION_WARNINGS
506 st->internal->need_context_update = 0;
512 int avformat_open_input(AVFormatContext **ps, const char *filename,
513 ff_const59 AVInputFormat *fmt, AVDictionary **options)
515 AVFormatContext *s = *ps;
517 AVDictionary *tmp = NULL;
518 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
520 if (!s && !(s = avformat_alloc_context()))
521 return AVERROR(ENOMEM);
523 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
524 return AVERROR(EINVAL);
530 av_dict_copy(&tmp, *options, 0);
532 if (s->pb) // must be before any goto fail
533 s->flags |= AVFMT_FLAG_CUSTOM_IO;
535 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
538 if (!(s->url = av_strdup(filename ? filename : ""))) {
539 ret = AVERROR(ENOMEM);
543 #if FF_API_FORMAT_FILENAME
544 FF_DISABLE_DEPRECATION_WARNINGS
545 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
546 FF_ENABLE_DEPRECATION_WARNINGS
548 if ((ret = init_input(s, filename, &tmp)) < 0)
550 s->probe_score = ret;
552 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
553 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
554 if (!s->protocol_whitelist) {
555 ret = AVERROR(ENOMEM);
560 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
561 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
562 if (!s->protocol_blacklist) {
563 ret = AVERROR(ENOMEM);
568 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
569 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
570 ret = AVERROR(EINVAL);
574 avio_skip(s->pb, s->skip_initial_bytes);
576 /* Check filename in case an image number is expected. */
577 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
578 if (!av_filename_number_test(filename)) {
579 ret = AVERROR(EINVAL);
584 s->duration = s->start_time = AV_NOPTS_VALUE;
586 /* Allocate private data. */
587 if (s->iformat->priv_data_size > 0) {
588 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
589 ret = AVERROR(ENOMEM);
592 if (s->iformat->priv_class) {
593 *(const AVClass **) s->priv_data = s->iformat->priv_class;
594 av_opt_set_defaults(s->priv_data);
595 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
600 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
602 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
604 #if FF_API_DEMUXER_OPEN
605 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
607 if (s->iformat->read_header)
609 if ((ret = s->iformat->read_header(s)) < 0)
613 s->metadata = s->internal->id3v2_meta;
614 s->internal->id3v2_meta = NULL;
615 } else if (s->internal->id3v2_meta) {
616 av_log(s, AV_LOG_WARNING, "Discarding ID3 tags because more suitable tags were found.\n");
617 av_dict_free(&s->internal->id3v2_meta);
620 if (id3v2_extra_meta) {
621 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
622 !strcmp(s->iformat->name, "tta") || !strcmp(s->iformat->name, "wav")) {
623 if ((ret = ff_id3v2_parse_apic(s, id3v2_extra_meta)) < 0)
625 if ((ret = ff_id3v2_parse_chapters(s, id3v2_extra_meta)) < 0)
627 if ((ret = ff_id3v2_parse_priv(s, id3v2_extra_meta)) < 0)
630 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
632 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
634 if ((ret = avformat_queue_attached_pictures(s)) < 0)
637 #if FF_API_DEMUXER_OPEN
638 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
640 if (s->pb && !s->internal->data_offset)
642 s->internal->data_offset = avio_tell(s->pb);
644 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
646 update_stream_avctx(s);
648 for (i = 0; i < s->nb_streams; i++)
649 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
652 av_dict_free(options);
659 if (s->iformat->read_close)
660 s->iformat->read_close(s);
662 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
664 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
666 avformat_free_context(s);
671 /*******************************************************/
673 static void force_codec_ids(AVFormatContext *s, AVStream *st)
675 switch (st->codecpar->codec_type) {
676 case AVMEDIA_TYPE_VIDEO:
677 if (s->video_codec_id)
678 st->codecpar->codec_id = s->video_codec_id;
680 case AVMEDIA_TYPE_AUDIO:
681 if (s->audio_codec_id)
682 st->codecpar->codec_id = s->audio_codec_id;
684 case AVMEDIA_TYPE_SUBTITLE:
685 if (s->subtitle_codec_id)
686 st->codecpar->codec_id = s->subtitle_codec_id;
688 case AVMEDIA_TYPE_DATA:
689 if (s->data_codec_id)
690 st->codecpar->codec_id = s->data_codec_id;
695 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
697 if (st->internal->request_probe>0) {
698 AVProbeData *pd = &st->internal->probe_data;
700 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
704 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
706 av_log(s, AV_LOG_WARNING,
707 "Failed to reallocate probe buffer for stream %d\n",
712 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
713 pd->buf_size += pkt->size;
714 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
717 st->probe_packets = 0;
719 av_log(s, AV_LOG_WARNING,
720 "nothing to probe for stream %d\n", st->index);
724 end= s->internal->raw_packet_buffer_remaining_size <= 0
725 || st->probe_packets<= 0;
727 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
728 int score = set_codec_from_probe_data(s, st, pd);
729 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
733 st->internal->request_probe = -1;
734 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
735 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
737 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
739 force_codec_ids(s, st);
745 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
747 int64_t ref = pkt->dts;
748 int i, pts_wrap_behavior;
749 int64_t pts_wrap_reference;
750 AVProgram *first_program;
752 if (ref == AV_NOPTS_VALUE)
754 if (st->internal->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
756 ref &= (1LL << st->pts_wrap_bits)-1;
758 // reference time stamp should be 60 s before first time stamp
759 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
760 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
761 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
762 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
763 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
765 first_program = av_find_program_from_stream(s, NULL, stream_index);
767 if (!first_program) {
768 int default_stream_index = av_find_default_stream_index(s);
769 if (s->streams[default_stream_index]->internal->pts_wrap_reference == AV_NOPTS_VALUE) {
770 for (i = 0; i < s->nb_streams; i++) {
771 if (av_find_program_from_stream(s, NULL, i))
773 s->streams[i]->internal->pts_wrap_reference = pts_wrap_reference;
774 s->streams[i]->internal->pts_wrap_behavior = pts_wrap_behavior;
778 st->internal->pts_wrap_reference = s->streams[default_stream_index]->internal->pts_wrap_reference;
779 st->internal->pts_wrap_behavior = s->streams[default_stream_index]->internal->pts_wrap_behavior;
783 AVProgram *program = first_program;
785 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
786 pts_wrap_reference = program->pts_wrap_reference;
787 pts_wrap_behavior = program->pts_wrap_behavior;
790 program = av_find_program_from_stream(s, program, stream_index);
793 // update every program with differing pts_wrap_reference
794 program = first_program;
796 if (program->pts_wrap_reference != pts_wrap_reference) {
797 for (i = 0; i<program->nb_stream_indexes; i++) {
798 s->streams[program->stream_index[i]]->internal->pts_wrap_reference = pts_wrap_reference;
799 s->streams[program->stream_index[i]]->internal->pts_wrap_behavior = pts_wrap_behavior;
802 program->pts_wrap_reference = pts_wrap_reference;
803 program->pts_wrap_behavior = pts_wrap_behavior;
805 program = av_find_program_from_stream(s, program, stream_index);
811 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
816 #if FF_API_INIT_PACKET
817 FF_DISABLE_DEPRECATION_WARNINGS
821 FF_ENABLE_DEPRECATION_WARNINGS
823 av_packet_unref(pkt);
827 PacketList *pktl = s->internal->raw_packet_buffer;
828 const AVPacket *pkt1;
831 st = s->streams[pktl->pkt.stream_index];
832 if (s->internal->raw_packet_buffer_remaining_size <= 0)
833 if ((err = probe_codec(s, st, NULL)) < 0)
835 if (st->internal->request_probe <= 0) {
836 avpriv_packet_list_get(&s->internal->raw_packet_buffer,
837 &s->internal->raw_packet_buffer_end, pkt);
838 s->internal->raw_packet_buffer_remaining_size += pkt->size;
843 ret = s->iformat->read_packet(s, pkt);
845 av_packet_unref(pkt);
847 /* Some demuxers return FFERROR_REDO when they consume
848 data and discard it (ignored streams, junk, extradata).
849 We must re-call the demuxer to get the real packet. */
850 if (ret == FFERROR_REDO)
852 if (!pktl || ret == AVERROR(EAGAIN))
854 for (i = 0; i < s->nb_streams; i++) {
856 if (st->probe_packets || st->internal->request_probe > 0)
857 if ((err = probe_codec(s, st, NULL)) < 0)
859 av_assert0(st->internal->request_probe <= 0);
864 err = av_packet_make_refcounted(pkt);
866 av_packet_unref(pkt);
870 if (pkt->flags & AV_PKT_FLAG_CORRUPT) {
871 av_log(s, AV_LOG_WARNING,
872 "Packet corrupt (stream = %d, dts = %s)",
873 pkt->stream_index, av_ts2str(pkt->dts));
874 if (s->flags & AVFMT_FLAG_DISCARD_CORRUPT) {
875 av_log(s, AV_LOG_WARNING, ", dropping it.\n");
876 av_packet_unref(pkt);
879 av_log(s, AV_LOG_WARNING, ".\n");
882 av_assert0(pkt->stream_index < (unsigned)s->nb_streams &&
883 "Invalid stream index.\n");
885 st = s->streams[pkt->stream_index];
887 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->internal->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
888 // correct first time stamps to negative values
889 if (!is_relative(st->first_dts))
890 st->first_dts = wrap_timestamp(st, st->first_dts);
891 if (!is_relative(st->start_time))
892 st->start_time = wrap_timestamp(st, st->start_time);
893 if (!is_relative(st->cur_dts))
894 st->cur_dts = wrap_timestamp(st, st->cur_dts);
897 pkt->dts = wrap_timestamp(st, pkt->dts);
898 pkt->pts = wrap_timestamp(st, pkt->pts);
900 force_codec_ids(s, st);
902 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
903 if (s->use_wallclock_as_timestamps)
904 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
906 if (!pktl && st->internal->request_probe <= 0)
909 err = avpriv_packet_list_put(&s->internal->raw_packet_buffer,
910 &s->internal->raw_packet_buffer_end,
913 av_packet_unref(pkt);
916 pkt1 = &s->internal->raw_packet_buffer_end->pkt;
917 s->internal->raw_packet_buffer_remaining_size -= pkt1->size;
919 if ((err = probe_codec(s, st, pkt1)) < 0)
925 /**********************************************************/
927 static int determinable_frame_size(AVCodecContext *avctx)
929 switch(avctx->codec_id) {
930 case AV_CODEC_ID_MP1:
931 case AV_CODEC_ID_MP2:
932 case AV_CODEC_ID_MP3:
933 case AV_CODEC_ID_CODEC2:
941 * Return the frame duration in seconds. Return 0 if not available.
943 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
944 AVCodecParserContext *pc, AVPacket *pkt)
946 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
947 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
948 int frame_size, sample_rate;
950 #if FF_API_LAVF_AVCTX
951 FF_DISABLE_DEPRECATION_WARNINGS
952 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
953 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
954 FF_ENABLE_DEPRECATION_WARNINGS
959 switch (st->codecpar->codec_type) {
960 case AVMEDIA_TYPE_VIDEO:
961 if (st->r_frame_rate.num && !pc && s->iformat) {
962 *pnum = st->r_frame_rate.den;
963 *pden = st->r_frame_rate.num;
964 } else if (st->time_base.num * 1000LL > st->time_base.den) {
965 *pnum = st->time_base.num;
966 *pden = st->time_base.den;
967 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
968 av_assert0(st->internal->avctx->ticks_per_frame);
969 av_reduce(pnum, pden,
971 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
974 if (pc && pc->repeat_pict) {
975 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
976 av_reduce(pnum, pden,
977 (*pnum) * (1LL + pc->repeat_pict),
981 /* If this codec can be interlaced or progressive then we need
982 * a parser to compute duration of a packet. Thus if we have
983 * no parser in such case leave duration undefined. */
984 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
988 case AVMEDIA_TYPE_AUDIO:
989 if (st->internal->avctx_inited) {
990 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
991 sample_rate = st->internal->avctx->sample_rate;
993 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
994 sample_rate = st->codecpar->sample_rate;
996 if (frame_size <= 0 || sample_rate <= 0)
1006 int ff_is_intra_only(enum AVCodecID id)
1008 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1011 if ((d->type == AVMEDIA_TYPE_VIDEO || d->type == AVMEDIA_TYPE_AUDIO) &&
1012 !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1017 static int has_decode_delay_been_guessed(AVStream *st)
1019 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1020 if (!st->internal->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1022 #if CONFIG_H264_DECODER
1023 if (st->internal->avctx->has_b_frames &&
1024 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1027 if (st->internal->avctx->has_b_frames<3)
1028 return st->internal->nb_decoded_frames >= 7;
1029 else if (st->internal->avctx->has_b_frames<4)
1030 return st->internal->nb_decoded_frames >= 18;
1032 return st->internal->nb_decoded_frames >= 20;
1035 static PacketList *get_next_pkt(AVFormatContext *s, AVStream *st, PacketList *pktl)
1039 if (pktl == s->internal->packet_buffer_end)
1040 return s->internal->parse_queue;
1044 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1045 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1046 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1049 int delay = st->internal->avctx->has_b_frames;
1052 if (dts == AV_NOPTS_VALUE) {
1053 int64_t best_score = INT64_MAX;
1054 for (i = 0; i<delay; i++) {
1055 if (st->internal->pts_reorder_error_count[i]) {
1056 int64_t score = st->internal->pts_reorder_error[i] / st->internal->pts_reorder_error_count[i];
1057 if (score < best_score) {
1059 dts = pts_buffer[i];
1064 for (i = 0; i<delay; i++) {
1065 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1066 int64_t diff = FFABS(pts_buffer[i] - dts)
1067 + (uint64_t)st->internal->pts_reorder_error[i];
1068 diff = FFMAX(diff, st->internal->pts_reorder_error[i]);
1069 st->internal->pts_reorder_error[i] = diff;
1070 st->internal->pts_reorder_error_count[i]++;
1071 if (st->internal->pts_reorder_error_count[i] > 250) {
1072 st->internal->pts_reorder_error[i] >>= 1;
1073 st->internal->pts_reorder_error_count[i] >>= 1;
1080 if (dts == AV_NOPTS_VALUE)
1081 dts = pts_buffer[0];
1087 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1088 * of the packets in a window.
1090 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1091 PacketList *pkt_buffer)
1093 AVStream *st = s->streams[stream_index];
1094 int delay = st->internal->avctx->has_b_frames;
1097 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1099 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1100 pts_buffer[i] = AV_NOPTS_VALUE;
1102 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1103 if (pkt_buffer->pkt.stream_index != stream_index)
1106 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1107 pts_buffer[0] = pkt_buffer->pkt.pts;
1108 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1109 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1111 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1116 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1117 int64_t dts, int64_t pts, AVPacket *pkt)
1119 AVStream *st = s->streams[stream_index];
1120 PacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1121 PacketList *pktl_it;
1125 if (st->first_dts != AV_NOPTS_VALUE ||
1126 dts == AV_NOPTS_VALUE ||
1127 st->cur_dts == AV_NOPTS_VALUE ||
1128 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1129 dts < INT_MIN + (st->cur_dts - RELATIVE_TS_BASE) ||
1133 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1135 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1137 if (is_relative(pts))
1140 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1141 if (pktl_it->pkt.stream_index != stream_index)
1143 if (is_relative(pktl_it->pkt.pts))
1144 pktl_it->pkt.pts += shift;
1146 if (is_relative(pktl_it->pkt.dts))
1147 pktl_it->pkt.dts += shift;
1149 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1150 st->start_time = pktl_it->pkt.pts;
1151 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1152 st->start_time = av_sat_add64(st->start_time, av_rescale_q(st->internal->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base));
1156 if (has_decode_delay_been_guessed(st)) {
1157 update_dts_from_pts(s, stream_index, pktl);
1160 if (st->start_time == AV_NOPTS_VALUE) {
1161 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1162 st->start_time = pts;
1164 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1165 st->start_time = av_sat_add64(st->start_time, av_rescale_q(st->internal->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base));
1169 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1170 int stream_index, int64_t duration)
1172 PacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1173 int64_t cur_dts = RELATIVE_TS_BASE;
1175 if (st->first_dts != AV_NOPTS_VALUE) {
1176 if (st->internal->update_initial_durations_done)
1178 st->internal->update_initial_durations_done = 1;
1179 cur_dts = st->first_dts;
1180 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1181 if (pktl->pkt.stream_index == stream_index) {
1182 if (pktl->pkt.pts != pktl->pkt.dts ||
1183 pktl->pkt.dts != AV_NOPTS_VALUE ||
1186 cur_dts -= duration;
1189 if (pktl && pktl->pkt.dts != st->first_dts) {
1190 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1191 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1195 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1198 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1199 st->first_dts = cur_dts;
1200 } else if (st->cur_dts != RELATIVE_TS_BASE)
1203 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1204 if (pktl->pkt.stream_index != stream_index)
1206 if ((pktl->pkt.pts == pktl->pkt.dts ||
1207 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1208 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1209 pktl->pkt.dts == st->first_dts ||
1210 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1211 !pktl->pkt.duration) {
1212 pktl->pkt.dts = cur_dts;
1213 if (!st->internal->avctx->has_b_frames)
1214 pktl->pkt.pts = cur_dts;
1215 pktl->pkt.duration = duration;
1218 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1221 st->cur_dts = cur_dts;
1224 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1225 AVCodecParserContext *pc, AVPacket *pkt,
1226 int64_t next_dts, int64_t next_pts)
1228 int num, den, presentation_delayed, delay, i;
1230 AVRational duration;
1231 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1232 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1234 if (s->flags & AVFMT_FLAG_NOFILLIN)
1237 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1238 if (pkt->dts == pkt->pts && st->internal->last_dts_for_order_check != AV_NOPTS_VALUE) {
1239 if (st->internal->last_dts_for_order_check <= pkt->dts) {
1240 st->internal->dts_ordered++;
1242 av_log(s, st->internal->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1243 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1245 st->internal->last_dts_for_order_check);
1246 st->internal->dts_misordered++;
1248 if (st->internal->dts_ordered + st->internal->dts_misordered > 250) {
1249 st->internal->dts_ordered >>= 1;
1250 st->internal->dts_misordered >>= 1;
1254 st->internal->last_dts_for_order_check = pkt->dts;
1255 if (st->internal->dts_ordered < 8*st->internal->dts_misordered && pkt->dts == pkt->pts)
1256 pkt->dts = AV_NOPTS_VALUE;
1259 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1260 pkt->dts = AV_NOPTS_VALUE;
1262 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1263 && !st->internal->avctx->has_b_frames)
1264 //FIXME Set low_delay = 0 when has_b_frames = 1
1265 st->internal->avctx->has_b_frames = 1;
1267 /* do we have a video B-frame ? */
1268 delay = st->internal->avctx->has_b_frames;
1269 presentation_delayed = 0;
1271 /* XXX: need has_b_frame, but cannot get it if the codec is
1272 * not initialized */
1274 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1275 presentation_delayed = 1;
1277 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1278 st->pts_wrap_bits < 63 && pkt->dts > INT64_MIN + (1LL << (st->pts_wrap_bits - 1)) &&
1279 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1280 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1281 pkt->dts -= 1LL << st->pts_wrap_bits;
1283 pkt->pts += 1LL << st->pts_wrap_bits;
1286 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1287 * We take the conservative approach and discard both.
1288 * Note: If this is misbehaving for an H.264 file, then possibly
1289 * presentation_delayed is not set correctly. */
1290 if (delay == 1 && pkt->dts == pkt->pts &&
1291 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1292 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1293 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1294 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1295 pkt->dts = AV_NOPTS_VALUE;
1298 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1299 if (pkt->duration <= 0) {
1300 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1302 duration = (AVRational) {num, den};
1303 pkt->duration = av_rescale_rnd(1,
1304 num * (int64_t) st->time_base.den,
1305 den * (int64_t) st->time_base.num,
1310 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1311 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1313 /* Correct timestamps with byte offset if demuxers only have timestamps
1314 * on packet boundaries */
1315 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1316 /* this will estimate bitrate based on this frame's duration and size */
1317 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1318 if (pkt->pts != AV_NOPTS_VALUE)
1320 if (pkt->dts != AV_NOPTS_VALUE)
1324 /* This may be redundant, but it should not hurt. */
1325 if (pkt->dts != AV_NOPTS_VALUE &&
1326 pkt->pts != AV_NOPTS_VALUE &&
1327 pkt->pts > pkt->dts)
1328 presentation_delayed = 1;
1330 if (s->debug & FF_FDEBUG_TS)
1331 av_log(s, AV_LOG_DEBUG,
1332 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1333 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1334 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1336 /* Interpolate PTS and DTS if they are not present. We skip H264
1337 * currently because delay and has_b_frames are not reliably set. */
1338 if ((delay == 0 || (delay == 1 && pc)) &&
1340 if (presentation_delayed) {
1341 /* DTS = decompression timestamp */
1342 /* PTS = presentation timestamp */
1343 if (pkt->dts == AV_NOPTS_VALUE)
1344 pkt->dts = st->last_IP_pts;
1345 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1346 if (pkt->dts == AV_NOPTS_VALUE)
1347 pkt->dts = st->cur_dts;
1349 /* This is tricky: the dts must be incremented by the duration
1350 * of the frame we are displaying, i.e. the last I- or P-frame. */
1351 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1352 st->last_IP_duration = pkt->duration;
1353 if (pkt->dts != AV_NOPTS_VALUE)
1354 st->cur_dts = av_sat_add64(pkt->dts, st->last_IP_duration);
1355 if (pkt->dts != AV_NOPTS_VALUE &&
1356 pkt->pts == AV_NOPTS_VALUE &&
1357 st->last_IP_duration > 0 &&
1358 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1359 next_dts != next_pts &&
1360 next_pts != AV_NOPTS_VALUE)
1361 pkt->pts = next_dts;
1363 if ((uint64_t)pkt->duration <= INT32_MAX)
1364 st->last_IP_duration = pkt->duration;
1365 st->last_IP_pts = pkt->pts;
1366 /* Cannot compute PTS if not present (we can compute it only
1367 * by knowing the future. */
1368 } else if (pkt->pts != AV_NOPTS_VALUE ||
1369 pkt->dts != AV_NOPTS_VALUE ||
1370 pkt->duration > 0 ) {
1372 /* presentation is not delayed : PTS and DTS are the same */
1373 if (pkt->pts == AV_NOPTS_VALUE)
1374 pkt->pts = pkt->dts;
1375 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1377 if (pkt->pts == AV_NOPTS_VALUE)
1378 pkt->pts = st->cur_dts;
1379 pkt->dts = pkt->pts;
1380 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1381 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1385 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1386 st->internal->pts_buffer[0] = pkt->pts;
1387 for (i = 0; i<delay && st->internal->pts_buffer[i] > st->internal->pts_buffer[i + 1]; i++)
1388 FFSWAP(int64_t, st->internal->pts_buffer[i], st->internal->pts_buffer[i + 1]);
1390 if(has_decode_delay_been_guessed(st))
1391 pkt->dts = select_from_pts_buffer(st, st->internal->pts_buffer, pkt->dts);
1393 // We skipped it above so we try here.
1395 // This should happen on the first packet
1396 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1397 if (pkt->dts > st->cur_dts)
1398 st->cur_dts = pkt->dts;
1400 if (s->debug & FF_FDEBUG_TS)
1401 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1402 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1405 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || ff_is_intra_only(st->codecpar->codec_id))
1406 pkt->flags |= AV_PKT_FLAG_KEY;
1407 #if FF_API_CONVERGENCE_DURATION
1408 FF_DISABLE_DEPRECATION_WARNINGS
1410 pkt->convergence_duration = pc->convergence_duration;
1411 FF_ENABLE_DEPRECATION_WARNINGS
1416 * Parse a packet, add all split parts to parse_queue.
1418 * @param pkt Packet to parse; must not be NULL.
1419 * @param flush Indicates whether to flush. If set, pkt must be blank.
1421 static int parse_packet(AVFormatContext *s, AVPacket *pkt,
1422 int stream_index, int flush)
1424 AVPacket *out_pkt = s->internal->parse_pkt;
1425 AVStream *st = s->streams[stream_index];
1426 uint8_t *data = pkt->data;
1427 int size = pkt->size;
1428 int ret = 0, got_output = flush;
1430 if (!size && !flush && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1431 // preserve 0-size sync packets
1432 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1435 while (size > 0 || (flush && got_output)) {
1437 int64_t next_pts = pkt->pts;
1438 int64_t next_dts = pkt->dts;
1440 len = av_parser_parse2(st->parser, st->internal->avctx,
1441 &out_pkt->data, &out_pkt->size, data, size,
1442 pkt->pts, pkt->dts, pkt->pos);
1444 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1446 /* increment read pointer */
1447 av_assert1(data || !len);
1448 data = len ? data + len : data;
1451 got_output = !!out_pkt->size;
1456 if (pkt->buf && out_pkt->data == pkt->data) {
1457 /* reference pkt->buf only when out_pkt->data is guaranteed to point
1458 * to data in it and not in the parser's internal buffer. */
1459 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1460 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1461 out_pkt->buf = av_buffer_ref(pkt->buf);
1462 if (!out_pkt->buf) {
1463 ret = AVERROR(ENOMEM);
1467 ret = av_packet_make_refcounted(out_pkt);
1472 if (pkt->side_data) {
1473 out_pkt->side_data = pkt->side_data;
1474 out_pkt->side_data_elems = pkt->side_data_elems;
1475 pkt->side_data = NULL;
1476 pkt->side_data_elems = 0;
1479 /* set the duration */
1480 out_pkt->duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1481 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1482 if (st->internal->avctx->sample_rate > 0) {
1484 av_rescale_q_rnd(st->parser->duration,
1485 (AVRational) { 1, st->internal->avctx->sample_rate },
1491 out_pkt->stream_index = st->index;
1492 out_pkt->pts = st->parser->pts;
1493 out_pkt->dts = st->parser->dts;
1494 out_pkt->pos = st->parser->pos;
1495 out_pkt->flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1497 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1498 out_pkt->pos = st->parser->frame_offset;
1500 if (st->parser->key_frame == 1 ||
1501 (st->parser->key_frame == -1 &&
1502 st->parser->pict_type == AV_PICTURE_TYPE_I))
1503 out_pkt->flags |= AV_PKT_FLAG_KEY;
1505 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1506 out_pkt->flags |= AV_PKT_FLAG_KEY;
1508 compute_pkt_fields(s, st, st->parser, out_pkt, next_dts, next_pts);
1510 ret = avpriv_packet_list_put(&s->internal->parse_queue,
1511 &s->internal->parse_queue_end,
1517 /* end of the stream => close and free the parser */
1519 av_parser_close(st->parser);
1525 av_packet_unref(out_pkt);
1526 av_packet_unref(pkt);
1530 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1532 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1535 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1537 int ret, i, got_packet = 0;
1538 AVDictionary *metadata = NULL;
1540 while (!got_packet && !s->internal->parse_queue) {
1543 /* read next packet */
1544 ret = ff_read_packet(s, pkt);
1546 if (ret == AVERROR(EAGAIN))
1548 /* flush the parsers */
1549 for (i = 0; i < s->nb_streams; i++) {
1551 if (st->parser && st->need_parsing)
1552 parse_packet(s, pkt, st->index, 1);
1554 /* all remaining packets are now in parse_queue =>
1555 * really terminate parsing */
1559 st = s->streams[pkt->stream_index];
1561 st->event_flags |= AVSTREAM_EVENT_FLAG_NEW_PACKETS;
1563 /* update context if required */
1564 if (st->internal->need_context_update) {
1565 if (avcodec_is_open(st->internal->avctx)) {
1566 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1567 avcodec_close(st->internal->avctx);
1568 st->internal->info->found_decoder = 0;
1571 /* close parser, because it depends on the codec */
1572 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1573 av_parser_close(st->parser);
1577 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1579 av_packet_unref(pkt);
1583 #if FF_API_LAVF_AVCTX
1584 FF_DISABLE_DEPRECATION_WARNINGS
1585 /* update deprecated public codec context */
1586 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1588 av_packet_unref(pkt);
1591 FF_ENABLE_DEPRECATION_WARNINGS
1594 st->internal->need_context_update = 0;
1597 if (pkt->pts != AV_NOPTS_VALUE &&
1598 pkt->dts != AV_NOPTS_VALUE &&
1599 pkt->pts < pkt->dts) {
1600 av_log(s, AV_LOG_WARNING,
1601 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1603 av_ts2str(pkt->pts),
1604 av_ts2str(pkt->dts),
1607 if (s->debug & FF_FDEBUG_TS)
1608 av_log(s, AV_LOG_DEBUG,
1609 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1611 av_ts2str(pkt->pts),
1612 av_ts2str(pkt->dts),
1613 pkt->size, pkt->duration, pkt->flags);
1615 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1616 st->parser = av_parser_init(st->codecpar->codec_id);
1618 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1619 "%s, packets or times may be invalid.\n",
1620 avcodec_get_name(st->codecpar->codec_id));
1621 /* no parser available: just output the raw packets */
1622 st->need_parsing = AVSTREAM_PARSE_NONE;
1623 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1624 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1625 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1626 st->parser->flags |= PARSER_FLAG_ONCE;
1627 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1628 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1631 if (!st->need_parsing || !st->parser) {
1632 /* no parsing needed: we just output the packet as is */
1633 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1634 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1635 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1636 ff_reduce_index(s, st->index);
1637 av_add_index_entry(st, pkt->pos, pkt->dts,
1638 0, 0, AVINDEX_KEYFRAME);
1641 } else if (st->discard < AVDISCARD_ALL) {
1642 if ((ret = parse_packet(s, pkt, pkt->stream_index, 0)) < 0)
1644 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1645 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1646 st->codecpar->channels = st->internal->avctx->channels;
1647 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1648 st->codecpar->codec_id = st->internal->avctx->codec_id;
1651 av_packet_unref(pkt);
1653 if (pkt->flags & AV_PKT_FLAG_KEY)
1654 st->internal->skip_to_keyframe = 0;
1655 if (st->internal->skip_to_keyframe) {
1656 av_packet_unref(pkt);
1661 if (!got_packet && s->internal->parse_queue)
1662 ret = avpriv_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1665 AVStream *st = s->streams[pkt->stream_index];
1666 int discard_padding = 0;
1667 if (st->internal->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1668 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1669 int64_t sample = ts_to_samples(st, pts);
1670 int duration = ts_to_samples(st, pkt->duration);
1671 int64_t end_sample = sample + duration;
1672 if (duration > 0 && end_sample >= st->internal->first_discard_sample &&
1673 sample < st->internal->last_discard_sample)
1674 discard_padding = FFMIN(end_sample - st->internal->first_discard_sample, duration);
1676 if (st->internal->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1677 st->internal->skip_samples = st->internal->start_skip_samples;
1678 if (st->internal->skip_samples || discard_padding) {
1679 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1681 AV_WL32(p, st->internal->skip_samples);
1682 AV_WL32(p + 4, discard_padding);
1683 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->internal->skip_samples, discard_padding);
1685 st->internal->skip_samples = 0;
1688 if (st->internal->inject_global_side_data) {
1689 for (i = 0; i < st->nb_side_data; i++) {
1690 AVPacketSideData *src_sd = &st->side_data[i];
1693 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1696 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1698 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1702 memcpy(dst_data, src_sd->data, src_sd->size);
1704 st->internal->inject_global_side_data = 0;
1708 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1710 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1711 av_dict_copy(&s->metadata, metadata, 0);
1712 av_dict_free(&metadata);
1713 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1716 #if FF_API_LAVF_AVCTX
1717 update_stream_avctx(s);
1720 if (s->debug & FF_FDEBUG_TS)
1721 av_log(s, AV_LOG_DEBUG,
1722 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1723 "size=%d, duration=%"PRId64", flags=%d\n",
1725 av_ts2str(pkt->pts),
1726 av_ts2str(pkt->dts),
1727 pkt->size, pkt->duration, pkt->flags);
1729 /* A demuxer might have returned EOF because of an IO error, let's
1730 * propagate this back to the user. */
1731 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1737 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1739 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1745 ret = s->internal->packet_buffer
1746 ? avpriv_packet_list_get(&s->internal->packet_buffer,
1747 &s->internal->packet_buffer_end, pkt)
1748 : read_frame_internal(s, pkt);
1755 PacketList *pktl = s->internal->packet_buffer;
1758 AVPacket *next_pkt = &pktl->pkt;
1760 if (next_pkt->dts != AV_NOPTS_VALUE) {
1761 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1762 // last dts seen for this stream. if any of packets following
1763 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1764 int64_t last_dts = next_pkt->dts;
1765 av_assert2(wrap_bits <= 64);
1766 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1767 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1768 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1769 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1771 next_pkt->pts = pktl->pkt.dts;
1773 if (last_dts != AV_NOPTS_VALUE) {
1774 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1775 last_dts = pktl->pkt.dts;
1780 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1781 // Fixing the last reference frame had none pts issue (For MXF etc).
1782 // We only do this when
1784 // 2. we are not able to resolve a pts value for current packet.
1785 // 3. the packets for this stream at the end of the files had valid dts.
1786 next_pkt->pts = last_dts + next_pkt->duration;
1788 pktl = s->internal->packet_buffer;
1791 /* read packet from packet buffer, if there is data */
1792 st = s->streams[next_pkt->stream_index];
1793 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1794 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1795 ret = avpriv_packet_list_get(&s->internal->packet_buffer,
1796 &s->internal->packet_buffer_end, pkt);
1801 ret = read_frame_internal(s, pkt);
1803 if (pktl && ret != AVERROR(EAGAIN)) {
1810 ret = avpriv_packet_list_put(&s->internal->packet_buffer,
1811 &s->internal->packet_buffer_end,
1814 av_packet_unref(pkt);
1821 st = s->streams[pkt->stream_index];
1822 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1823 ff_reduce_index(s, st->index);
1824 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1827 if (is_relative(pkt->dts))
1828 pkt->dts -= RELATIVE_TS_BASE;
1829 if (is_relative(pkt->pts))
1830 pkt->pts -= RELATIVE_TS_BASE;
1835 /* XXX: suppress the packet queue */
1836 static void flush_packet_queue(AVFormatContext *s)
1840 avpriv_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1841 avpriv_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1842 avpriv_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1844 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1847 /*******************************************************/
1850 int av_find_default_stream_index(AVFormatContext *s)
1854 int best_stream = 0;
1855 int best_score = INT_MIN;
1857 if (s->nb_streams <= 0)
1859 for (i = 0; i < s->nb_streams; i++) {
1862 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1863 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1865 if (st->codecpar->width && st->codecpar->height)
1869 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1870 if (st->codecpar->sample_rate)
1873 if (st->codec_info_nb_frames)
1876 if (st->discard != AVDISCARD_ALL)
1879 if (score > best_score) {
1887 /** Flush the frame reader. */
1888 void ff_read_frame_flush(AVFormatContext *s)
1893 flush_packet_queue(s);
1895 /* Reset read state for each stream. */
1896 for (i = 0; i < s->nb_streams; i++) {
1900 av_parser_close(st->parser);
1903 st->last_IP_pts = AV_NOPTS_VALUE;
1904 st->internal->last_dts_for_order_check = AV_NOPTS_VALUE;
1905 if (st->first_dts == AV_NOPTS_VALUE)
1906 st->cur_dts = RELATIVE_TS_BASE;
1908 /* We set the current DTS to an unspecified origin. */
1909 st->cur_dts = AV_NOPTS_VALUE;
1911 st->probe_packets = s->max_probe_packets;
1913 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1914 st->internal->pts_buffer[j] = AV_NOPTS_VALUE;
1916 if (s->internal->inject_global_side_data)
1917 st->internal->inject_global_side_data = 1;
1919 st->internal->skip_samples = 0;
1923 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1927 for (i = 0; i < s->nb_streams; i++) {
1928 AVStream *st = s->streams[i];
1931 av_rescale(timestamp,
1932 st->time_base.den * (int64_t) ref_st->time_base.num,
1933 st->time_base.num * (int64_t) ref_st->time_base.den);
1937 void ff_reduce_index(AVFormatContext *s, int stream_index)
1939 AVStream *st = s->streams[stream_index];
1940 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1942 if ((unsigned) st->internal->nb_index_entries >= max_entries) {
1944 for (i = 0; 2 * i < st->internal->nb_index_entries; i++)
1945 st->internal->index_entries[i] = st->internal->index_entries[2 * i];
1946 st->internal->nb_index_entries = i;
1950 int ff_add_index_entry(AVIndexEntry **index_entries,
1951 int *nb_index_entries,
1952 unsigned int *index_entries_allocated_size,
1953 int64_t pos, int64_t timestamp,
1954 int size, int distance, int flags)
1956 AVIndexEntry *entries, *ie;
1959 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1962 if (timestamp == AV_NOPTS_VALUE)
1963 return AVERROR(EINVAL);
1965 if (size < 0 || size > 0x3FFFFFFF)
1966 return AVERROR(EINVAL);
1968 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1969 timestamp -= RELATIVE_TS_BASE;
1971 entries = av_fast_realloc(*index_entries,
1972 index_entries_allocated_size,
1973 (*nb_index_entries + 1) *
1974 sizeof(AVIndexEntry));
1978 *index_entries = entries;
1980 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1981 timestamp, AVSEEK_FLAG_ANY);
1984 index = (*nb_index_entries)++;
1985 ie = &entries[index];
1986 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1988 ie = &entries[index];
1989 if (ie->timestamp != timestamp) {
1990 if (ie->timestamp <= timestamp)
1992 memmove(entries + index + 1, entries + index,
1993 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1994 (*nb_index_entries)++;
1995 } else if (ie->pos == pos && distance < ie->min_distance)
1996 // do not reduce the distance
1997 distance = ie->min_distance;
2001 ie->timestamp = timestamp;
2002 ie->min_distance = distance;
2009 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2010 int size, int distance, int flags)
2012 timestamp = wrap_timestamp(st, timestamp);
2013 return ff_add_index_entry(&st->internal->index_entries, &st->internal->nb_index_entries,
2014 &st->internal->index_entries_allocated_size, pos,
2015 timestamp, size, distance, flags);
2018 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2019 int64_t wanted_timestamp, int flags)
2027 // Optimize appending index entries at the end.
2028 if (b && entries[b - 1].timestamp < wanted_timestamp)
2034 // Search for the next non-discarded packet.
2035 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2037 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2043 timestamp = entries[m].timestamp;
2044 if (timestamp >= wanted_timestamp)
2046 if (timestamp <= wanted_timestamp)
2049 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2051 if (!(flags & AVSEEK_FLAG_ANY))
2052 while (m >= 0 && m < nb_entries &&
2053 !(entries[m].flags & AVINDEX_KEYFRAME))
2054 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2056 if (m == nb_entries)
2061 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2064 int64_t pos_delta = 0;
2066 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2067 const char *proto = avio_find_protocol_name(s->url);
2069 av_assert0(time_tolerance >= 0);
2072 av_log(s, AV_LOG_INFO,
2073 "Protocol name not provided, cannot determine if input is local or "
2074 "a network protocol, buffers and access patterns cannot be configured "
2075 "optimally without knowing the protocol\n");
2078 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2081 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2082 AVStream *st1 = s->streams[ist1];
2083 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2084 AVStream *st2 = s->streams[ist2];
2090 for (i1 = i2 = 0; i1 < st1->internal->nb_index_entries; i1++) {
2091 AVIndexEntry *e1 = &st1->internal->index_entries[i1];
2092 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2094 skip = FFMAX(skip, e1->size);
2095 for (; i2 < st2->internal->nb_index_entries; i2++) {
2096 AVIndexEntry *e2 = &st2->internal->index_entries[i2];
2097 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2098 if (e2_pts < e1_pts || e2_pts - (uint64_t)e1_pts < time_tolerance)
2100 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2108 /* XXX This could be adjusted depending on protocol*/
2109 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2110 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2112 /* realloc the buffer and the original data will be retained */
2113 if (ffio_realloc_buf(s->pb, pos_delta)) {
2114 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2118 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2121 if (skip < (1<<23)) {
2122 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2126 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2128 return ff_index_search_timestamp(st->internal->index_entries, st->internal->nb_index_entries,
2129 wanted_timestamp, flags);
2132 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2133 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2135 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2136 if (stream_index >= 0)
2137 ts = wrap_timestamp(s->streams[stream_index], ts);
2141 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2142 int64_t target_ts, int flags)
2144 const AVInputFormat *avif = s->iformat;
2145 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2146 int64_t ts_min, ts_max, ts;
2151 if (stream_index < 0)
2154 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2157 ts_min = AV_NOPTS_VALUE;
2158 pos_limit = -1; // GCC falsely says it may be uninitialized.
2160 st = s->streams[stream_index];
2161 if (st->internal->index_entries) {
2164 /* FIXME: Whole function must be checked for non-keyframe entries in
2165 * index case, especially read_timestamp(). */
2166 index = av_index_search_timestamp(st, target_ts,
2167 flags | AVSEEK_FLAG_BACKWARD);
2168 index = FFMAX(index, 0);
2169 e = &st->internal->index_entries[index];
2171 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2173 ts_min = e->timestamp;
2174 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2175 pos_min, av_ts2str(ts_min));
2177 av_assert1(index == 0);
2180 index = av_index_search_timestamp(st, target_ts,
2181 flags & ~AVSEEK_FLAG_BACKWARD);
2182 av_assert0(index < st->internal->nb_index_entries);
2184 e = &st->internal->index_entries[index];
2185 av_assert1(e->timestamp >= target_ts);
2187 ts_max = e->timestamp;
2188 pos_limit = pos_max - e->min_distance;
2189 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2190 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2194 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2195 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2200 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2203 ff_read_frame_flush(s);
2204 ff_update_cur_dts(s, st, ts);
2209 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2210 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2212 int64_t step = 1024;
2213 int64_t limit, ts_max;
2214 int64_t filesize = avio_size(s->pb);
2215 int64_t pos_max = filesize - 1;
2218 pos_max = FFMAX(0, (pos_max) - step);
2219 ts_max = ff_read_timestamp(s, stream_index,
2220 &pos_max, limit, read_timestamp);
2222 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2223 if (ts_max == AV_NOPTS_VALUE)
2227 int64_t tmp_pos = pos_max + 1;
2228 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2229 &tmp_pos, INT64_MAX, read_timestamp);
2230 if (tmp_ts == AV_NOPTS_VALUE)
2232 av_assert0(tmp_pos > pos_max);
2235 if (tmp_pos >= filesize)
2247 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2248 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2249 int64_t ts_min, int64_t ts_max,
2250 int flags, int64_t *ts_ret,
2251 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2252 int64_t *, int64_t))
2259 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2261 if (ts_min == AV_NOPTS_VALUE) {
2262 pos_min = s->internal->data_offset;
2263 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2264 if (ts_min == AV_NOPTS_VALUE)
2268 if (ts_min >= target_ts) {
2273 if (ts_max == AV_NOPTS_VALUE) {
2274 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2276 pos_limit = pos_max;
2279 if (ts_max <= target_ts) {
2284 av_assert0(ts_min < ts_max);
2287 while (pos_min < pos_limit) {
2288 av_log(s, AV_LOG_TRACE,
2289 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2290 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2291 av_assert0(pos_limit <= pos_max);
2293 if (no_change == 0) {
2294 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2295 // interpolate position (better than dichotomy)
2296 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2298 pos_min - approximate_keyframe_distance;
2299 } else if (no_change == 1) {
2300 // bisection if interpolation did not change min / max pos last time
2301 pos = (pos_min + pos_limit) >> 1;
2303 /* linear search if bisection failed, can only happen if there
2304 * are very few or no keyframes between min/max */
2309 else if (pos > pos_limit)
2313 // May pass pos_limit instead of -1.
2314 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2319 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2320 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2321 pos_min, pos, pos_max,
2322 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2323 pos_limit, start_pos, no_change);
2324 if (ts == AV_NOPTS_VALUE) {
2325 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2328 if (target_ts <= ts) {
2329 pos_limit = start_pos - 1;
2333 if (target_ts >= ts) {
2339 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2340 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2343 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2345 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2346 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2347 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2353 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2354 int64_t pos, int flags)
2356 int64_t pos_min, pos_max;
2358 pos_min = s->internal->data_offset;
2359 pos_max = avio_size(s->pb) - 1;
2363 else if (pos > pos_max)
2366 avio_seek(s->pb, pos, SEEK_SET);
2368 s->io_repositioned = 1;
2373 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2374 int64_t timestamp, int flags)
2381 st = s->streams[stream_index];
2383 index = av_index_search_timestamp(st, timestamp, flags);
2385 if (index < 0 && st->internal->nb_index_entries &&
2386 timestamp < st->internal->index_entries[0].timestamp)
2389 if (index < 0 || index == st->internal->nb_index_entries - 1) {
2390 AVPacket *pkt = s->internal->pkt;
2393 if (st->internal->nb_index_entries) {
2394 av_assert0(st->internal->index_entries);
2395 ie = &st->internal->index_entries[st->internal->nb_index_entries - 1];
2396 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2398 ff_update_cur_dts(s, st, ie->timestamp);
2400 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2403 av_packet_unref(pkt);
2407 read_status = av_read_frame(s, pkt);
2408 } while (read_status == AVERROR(EAGAIN));
2409 if (read_status < 0)
2411 if (stream_index == pkt->stream_index && pkt->dts > timestamp) {
2412 if (pkt->flags & AV_PKT_FLAG_KEY) {
2413 av_packet_unref(pkt);
2416 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2417 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);
2418 av_packet_unref(pkt);
2422 av_packet_unref(pkt);
2424 index = av_index_search_timestamp(st, timestamp, flags);
2429 ff_read_frame_flush(s);
2430 if (s->iformat->read_seek)
2431 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2433 ie = &st->internal->index_entries[index];
2434 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2436 ff_update_cur_dts(s, st, ie->timestamp);
2441 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2442 int64_t timestamp, int flags)
2447 if (flags & AVSEEK_FLAG_BYTE) {
2448 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2450 ff_read_frame_flush(s);
2451 return seek_frame_byte(s, stream_index, timestamp, flags);
2454 if (stream_index < 0) {
2455 stream_index = av_find_default_stream_index(s);
2456 if (stream_index < 0)
2459 st = s->streams[stream_index];
2460 /* timestamp for default must be expressed in AV_TIME_BASE units */
2461 timestamp = av_rescale(timestamp, st->time_base.den,
2462 AV_TIME_BASE * (int64_t) st->time_base.num);
2465 /* first, we try the format specific seek */
2466 if (s->iformat->read_seek) {
2467 ff_read_frame_flush(s);
2468 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2474 if (s->iformat->read_timestamp &&
2475 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2476 ff_read_frame_flush(s);
2477 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2478 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2479 ff_read_frame_flush(s);
2480 return seek_frame_generic(s, stream_index, timestamp, flags);
2485 int av_seek_frame(AVFormatContext *s, int stream_index,
2486 int64_t timestamp, int flags)
2490 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2491 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2492 if ((flags & AVSEEK_FLAG_BACKWARD))
2496 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2497 flags & ~AVSEEK_FLAG_BACKWARD);
2500 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2503 ret = avformat_queue_attached_pictures(s);
2508 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2509 int64_t ts, int64_t max_ts, int flags)
2511 if (min_ts > ts || max_ts < ts)
2513 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2514 return AVERROR(EINVAL);
2517 flags |= AVSEEK_FLAG_ANY;
2518 flags &= ~AVSEEK_FLAG_BACKWARD;
2520 if (s->iformat->read_seek2) {
2522 ff_read_frame_flush(s);
2524 if (stream_index == -1 && s->nb_streams == 1) {
2525 AVRational time_base = s->streams[0]->time_base;
2526 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2527 min_ts = av_rescale_rnd(min_ts, time_base.den,
2528 time_base.num * (int64_t)AV_TIME_BASE,
2529 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2530 max_ts = av_rescale_rnd(max_ts, time_base.den,
2531 time_base.num * (int64_t)AV_TIME_BASE,
2532 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2536 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2540 ret = avformat_queue_attached_pictures(s);
2544 if (s->iformat->read_timestamp) {
2545 // try to seek via read_timestamp()
2548 // Fall back on old API if new is not implemented but old is.
2549 // Note the old API has somewhat different semantics.
2550 if (s->iformat->read_seek || 1) {
2551 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2552 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2553 if (ret<0 && ts != min_ts && max_ts != ts) {
2554 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2556 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2561 // try some generic seek like seek_frame_generic() but with new ts semantics
2562 return -1; //unreachable
2565 int avformat_flush(AVFormatContext *s)
2567 ff_read_frame_flush(s);
2571 /*******************************************************/
2574 * Return TRUE if the stream has accurate duration in any stream.
2576 * @return TRUE if the stream has accurate duration for at least one component.
2578 static int has_duration(AVFormatContext *ic)
2583 for (i = 0; i < ic->nb_streams; i++) {
2584 st = ic->streams[i];
2585 if (st->duration != AV_NOPTS_VALUE)
2588 if (ic->duration != AV_NOPTS_VALUE)
2594 * Estimate the stream timings from the one of each components.
2596 * Also computes the global bitrate if possible.
2598 static void update_stream_timings(AVFormatContext *ic)
2600 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2601 int64_t duration, duration1, duration_text, filesize;
2605 start_time = INT64_MAX;
2606 start_time_text = INT64_MAX;
2607 end_time = INT64_MIN;
2608 end_time_text = INT64_MIN;
2609 duration = INT64_MIN;
2610 duration_text = INT64_MIN;
2612 for (i = 0; i < ic->nb_streams; i++) {
2613 AVStream *st = ic->streams[i];
2614 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2615 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2616 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2617 start_time1 = av_rescale_q(st->start_time, st->time_base,
2620 start_time_text = FFMIN(start_time_text, start_time1);
2622 start_time = FFMIN(start_time, start_time1);
2623 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2625 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2626 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2627 end_time1 += start_time1;
2629 end_time_text = FFMAX(end_time_text, end_time1);
2631 end_time = FFMAX(end_time, end_time1);
2633 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2634 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2635 p->start_time = start_time1;
2636 if (p->end_time < end_time1)
2637 p->end_time = end_time1;
2640 if (st->duration != AV_NOPTS_VALUE) {
2641 duration1 = av_rescale_q(st->duration, st->time_base,
2644 duration_text = FFMAX(duration_text, duration1);
2646 duration = FFMAX(duration, duration1);
2649 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2650 start_time = start_time_text;
2651 else if (start_time > start_time_text)
2652 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2654 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2655 end_time = end_time_text;
2656 else if (end_time < end_time_text)
2657 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2659 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2660 duration = duration_text;
2661 else if (duration < duration_text)
2662 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2664 if (start_time != INT64_MAX) {
2665 ic->start_time = start_time;
2666 if (end_time != INT64_MIN) {
2667 if (ic->nb_programs > 1) {
2668 for (i = 0; i < ic->nb_programs; i++) {
2669 p = ic->programs[i];
2670 if (p->start_time != AV_NOPTS_VALUE &&
2671 p->end_time > p->start_time &&
2672 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2673 duration = FFMAX(duration, p->end_time - p->start_time);
2675 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2676 duration = FFMAX(duration, end_time - start_time);
2680 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2681 ic->duration = duration;
2683 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2684 /* compute the bitrate */
2685 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2686 (double) ic->duration;
2687 if (bitrate >= 0 && bitrate <= INT64_MAX)
2688 ic->bit_rate = bitrate;
2692 static void fill_all_stream_timings(AVFormatContext *ic)
2697 update_stream_timings(ic);
2698 for (i = 0; i < ic->nb_streams; i++) {
2699 st = ic->streams[i];
2700 if (st->start_time == AV_NOPTS_VALUE) {
2701 if (ic->start_time != AV_NOPTS_VALUE)
2702 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2704 if (ic->duration != AV_NOPTS_VALUE)
2705 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2711 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2713 int64_t filesize, duration;
2714 int i, show_warning = 0;
2717 /* if bit_rate is already set, we believe it */
2718 if (ic->bit_rate <= 0) {
2719 int64_t bit_rate = 0;
2720 for (i = 0; i < ic->nb_streams; i++) {
2721 st = ic->streams[i];
2722 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2723 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2724 if (st->codecpar->bit_rate > 0) {
2725 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2729 bit_rate += st->codecpar->bit_rate;
2730 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2731 // If we have a videostream with packets but without a bitrate
2732 // then consider the sum not known
2737 ic->bit_rate = bit_rate;
2740 /* if duration is already set, we believe it */
2741 if (ic->duration == AV_NOPTS_VALUE &&
2742 ic->bit_rate != 0) {
2743 filesize = ic->pb ? avio_size(ic->pb) : 0;
2744 if (filesize > ic->internal->data_offset) {
2745 filesize -= ic->internal->data_offset;
2746 for (i = 0; i < ic->nb_streams; i++) {
2747 st = ic->streams[i];
2748 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2749 && st->duration == AV_NOPTS_VALUE) {
2750 duration = av_rescale(filesize, 8LL * st->time_base.den,
2752 (int64_t) st->time_base.num);
2753 st->duration = duration;
2760 av_log(ic, AV_LOG_WARNING,
2761 "Estimating duration from bitrate, this may be inaccurate\n");
2764 #define DURATION_MAX_READ_SIZE 250000LL
2765 #define DURATION_MAX_RETRY 6
2767 /* only usable for MPEG-PS streams */
2768 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2770 AVPacket *pkt = ic->internal->pkt;
2772 int num, den, read_size, i, ret;
2773 int found_duration = 0;
2775 int64_t filesize, offset, duration;
2778 /* flush packet queue */
2779 flush_packet_queue(ic);
2781 for (i = 0; i < ic->nb_streams; i++) {
2782 st = ic->streams[i];
2783 if (st->start_time == AV_NOPTS_VALUE &&
2784 st->first_dts == AV_NOPTS_VALUE &&
2785 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2786 av_log(ic, AV_LOG_WARNING,
2787 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2790 av_parser_close(st->parser);
2795 if (ic->skip_estimate_duration_from_pts) {
2796 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2797 goto skip_duration_calc;
2800 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2801 /* estimate the end time (duration) */
2802 /* XXX: may need to support wrapping */
2803 filesize = ic->pb ? avio_size(ic->pb) : 0;
2805 is_end = found_duration;
2806 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2810 avio_seek(ic->pb, offset, SEEK_SET);
2813 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2817 ret = ff_read_packet(ic, pkt);
2818 } while (ret == AVERROR(EAGAIN));
2821 read_size += pkt->size;
2822 st = ic->streams[pkt->stream_index];
2823 if (pkt->pts != AV_NOPTS_VALUE &&
2824 (st->start_time != AV_NOPTS_VALUE ||
2825 st->first_dts != AV_NOPTS_VALUE)) {
2826 if (pkt->duration == 0) {
2827 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2829 pkt->duration = av_rescale_rnd(1,
2830 num * (int64_t) st->time_base.den,
2831 den * (int64_t) st->time_base.num,
2835 duration = pkt->pts + pkt->duration;
2837 if (st->start_time != AV_NOPTS_VALUE)
2838 duration -= st->start_time;
2840 duration -= st->first_dts;
2842 if (st->duration == AV_NOPTS_VALUE || st->internal->info->last_duration<= 0 ||
2843 (st->duration < duration && FFABS(duration - st->internal->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2844 st->duration = duration;
2845 st->internal->info->last_duration = duration;
2848 av_packet_unref(pkt);
2851 /* check if all audio/video streams have valid duration */
2854 for (i = 0; i < ic->nb_streams; i++) {
2855 st = ic->streams[i];
2856 switch (st->codecpar->codec_type) {
2857 case AVMEDIA_TYPE_VIDEO:
2858 case AVMEDIA_TYPE_AUDIO:
2859 if (st->duration == AV_NOPTS_VALUE)
2866 ++retry <= DURATION_MAX_RETRY);
2868 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2870 /* warn about audio/video streams which duration could not be estimated */
2871 for (i = 0; i < ic->nb_streams; i++) {
2872 st = ic->streams[i];
2873 if (st->duration == AV_NOPTS_VALUE) {
2874 switch (st->codecpar->codec_type) {
2875 case AVMEDIA_TYPE_VIDEO:
2876 case AVMEDIA_TYPE_AUDIO:
2877 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2878 av_log(ic, AV_LOG_WARNING, "stream %d : no PTS found at end of file, duration not set\n", i);
2880 av_log(ic, AV_LOG_WARNING, "stream %d : no TS found at start of file, duration not set\n", i);
2885 fill_all_stream_timings(ic);
2887 avio_seek(ic->pb, old_offset, SEEK_SET);
2888 for (i = 0; i < ic->nb_streams; i++) {
2891 st = ic->streams[i];
2892 st->cur_dts = st->first_dts;
2893 st->last_IP_pts = AV_NOPTS_VALUE;
2894 st->internal->last_dts_for_order_check = AV_NOPTS_VALUE;
2895 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2896 st->internal->pts_buffer[j] = AV_NOPTS_VALUE;
2900 /* 1:1 map to AVDurationEstimationMethod */
2901 static const char *const duration_name[] = {
2902 [AVFMT_DURATION_FROM_PTS] = "pts",
2903 [AVFMT_DURATION_FROM_STREAM] = "stream",
2904 [AVFMT_DURATION_FROM_BITRATE] = "bit rate",
2907 static const char *duration_estimate_name(enum AVDurationEstimationMethod method)
2909 return duration_name[method];
2912 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2916 /* get the file size, if possible */
2917 if (ic->iformat->flags & AVFMT_NOFILE) {
2920 file_size = avio_size(ic->pb);
2921 file_size = FFMAX(0, file_size);
2924 if ((!strcmp(ic->iformat->name, "mpeg") ||
2925 !strcmp(ic->iformat->name, "mpegts")) &&
2926 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2927 /* get accurate estimate from the PTSes */
2928 estimate_timings_from_pts(ic, old_offset);
2929 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2930 } else if (has_duration(ic)) {
2931 /* at least one component has timings - we use them for all
2933 fill_all_stream_timings(ic);
2934 /* nut demuxer estimate the duration from PTS */
2935 if(!strcmp(ic->iformat->name, "nut"))
2936 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2938 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2940 /* less precise: use bitrate info */
2941 estimate_timings_from_bit_rate(ic);
2942 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2944 update_stream_timings(ic);
2948 AVStream av_unused *st;
2949 for (i = 0; i < ic->nb_streams; i++) {
2950 st = ic->streams[i];
2951 if (st->time_base.den)
2952 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %s duration: %s\n", i,
2953 av_ts2timestr(st->start_time, &st->time_base),
2954 av_ts2timestr(st->duration, &st->time_base));
2956 av_log(ic, AV_LOG_TRACE,
2957 "format: start_time: %s duration: %s (estimate from %s) bitrate=%"PRId64" kb/s\n",
2958 av_ts2timestr(ic->start_time, &AV_TIME_BASE_Q),
2959 av_ts2timestr(ic->duration, &AV_TIME_BASE_Q),
2960 duration_estimate_name(ic->duration_estimation_method),
2961 (int64_t)ic->bit_rate / 1000);
2965 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2967 AVCodecContext *avctx = st->internal->avctx;
2969 #define FAIL(errmsg) do { \
2971 *errmsg_ptr = errmsg; \
2975 if ( avctx->codec_id == AV_CODEC_ID_NONE
2976 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2977 FAIL("unknown codec");
2978 switch (avctx->codec_type) {
2979 case AVMEDIA_TYPE_AUDIO:
2980 if (!avctx->frame_size && determinable_frame_size(avctx))
2981 FAIL("unspecified frame size");
2982 if (st->internal->info->found_decoder >= 0 &&
2983 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2984 FAIL("unspecified sample format");
2985 if (!avctx->sample_rate)
2986 FAIL("unspecified sample rate");
2987 if (!avctx->channels)
2988 FAIL("unspecified number of channels");
2989 if (st->internal->info->found_decoder >= 0 && !st->internal->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2990 FAIL("no decodable DTS frames");
2992 case AVMEDIA_TYPE_VIDEO:
2994 FAIL("unspecified size");
2995 if (st->internal->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2996 FAIL("unspecified pixel format");
2997 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2998 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2999 FAIL("no frame in rv30/40 and no sar");
3001 case AVMEDIA_TYPE_SUBTITLE:
3002 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3003 FAIL("unspecified size");
3005 case AVMEDIA_TYPE_DATA:
3006 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3012 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3013 static int try_decode_frame(AVFormatContext *s, AVStream *st,
3014 const AVPacket *avpkt, AVDictionary **options)
3016 AVCodecContext *avctx = st->internal->avctx;
3017 const AVCodec *codec;
3018 int got_picture = 1, ret = 0;
3019 AVFrame *frame = av_frame_alloc();
3020 AVSubtitle subtitle;
3021 AVPacket pkt = *avpkt;
3022 int do_skip_frame = 0;
3023 enum AVDiscard skip_frame;
3026 return AVERROR(ENOMEM);
3028 if (!avcodec_is_open(avctx) &&
3029 st->internal->info->found_decoder <= 0 &&
3030 (st->codecpar->codec_id != -st->internal->info->found_decoder || !st->codecpar->codec_id)) {
3031 AVDictionary *thread_opt = NULL;
3033 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3036 st->internal->info->found_decoder = -st->codecpar->codec_id;
3041 /* Force thread count to 1 since the H.264 decoder will not extract
3042 * SPS and PPS to extradata during multi-threaded decoding. */
3043 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3044 /* Force lowres to 0. The decoder might reduce the video size by the
3045 * lowres factor, and we don't want that propagated to the stream's
3047 av_dict_set(options ? options : &thread_opt, "lowres", "0", 0);
3048 if (s->codec_whitelist)
3049 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3050 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3052 av_dict_free(&thread_opt);
3054 st->internal->info->found_decoder = -avctx->codec_id;
3057 st->internal->info->found_decoder = 1;
3058 } else if (!st->internal->info->found_decoder)
3059 st->internal->info->found_decoder = 1;
3061 if (st->internal->info->found_decoder < 0) {
3066 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3068 skip_frame = avctx->skip_frame;
3069 avctx->skip_frame = AVDISCARD_ALL;
3072 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3074 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3075 (!st->codec_info_nb_frames &&
3076 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3078 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3079 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3080 ret = avcodec_send_packet(avctx, &pkt);
3081 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3085 ret = avcodec_receive_frame(avctx, frame);
3088 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3090 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3091 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3092 &got_picture, &pkt);
3094 avsubtitle_free(&subtitle);
3100 st->internal->nb_decoded_frames++;
3105 if (!pkt.data && !got_picture)
3109 if (do_skip_frame) {
3110 avctx->skip_frame = skip_frame;
3113 av_frame_free(&frame);
3117 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3119 while (tags->id != AV_CODEC_ID_NONE) {
3127 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3130 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3131 if (tag == tags[i].tag)
3133 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3134 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3136 return AV_CODEC_ID_NONE;
3139 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3141 if (bps <= 0 || bps > 64)
3142 return AV_CODEC_ID_NONE;
3147 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3149 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3151 return AV_CODEC_ID_NONE;
3156 if (sflags & (1 << (bps - 1))) {
3159 return AV_CODEC_ID_PCM_S8;
3161 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3163 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3165 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3167 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3169 return AV_CODEC_ID_NONE;
3174 return AV_CODEC_ID_PCM_U8;
3176 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3178 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3180 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3182 return AV_CODEC_ID_NONE;
3188 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3191 if (!av_codec_get_tag2(tags, id, &tag))
3196 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3200 for (i = 0; tags && tags[i]; i++) {
3201 const AVCodecTag *codec_tags = tags[i];
3202 while (codec_tags->id != AV_CODEC_ID_NONE) {
3203 if (codec_tags->id == id) {
3204 *tag = codec_tags->tag;
3213 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3216 for (i = 0; tags && tags[i]; i++) {
3217 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3218 if (id != AV_CODEC_ID_NONE)
3221 return AV_CODEC_ID_NONE;
3224 static int chapter_start_cmp(const void *p1, const void *p2)
3226 AVChapter *ch1 = *(AVChapter**)p1;
3227 AVChapter *ch2 = *(AVChapter**)p2;
3228 int delta = av_compare_ts(ch1->start, ch1->time_base, ch2->start, ch2->time_base);
3231 return (ch1 > ch2) - (ch1 < ch2);
3234 static int compute_chapters_end(AVFormatContext *s)
3237 int64_t max_time = 0;
3238 AVChapter **timetable = av_malloc(s->nb_chapters * sizeof(*timetable));
3241 return AVERROR(ENOMEM);
3243 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3244 max_time = s->duration +
3245 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3247 for (i = 0; i < s->nb_chapters; i++)
3248 timetable[i] = s->chapters[i];
3249 qsort(timetable, s->nb_chapters, sizeof(*timetable), chapter_start_cmp);
3251 for (i = 0; i < s->nb_chapters; i++)
3252 if (timetable[i]->end == AV_NOPTS_VALUE) {
3253 AVChapter *ch = timetable[i];
3254 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3258 if (i + 1 < s->nb_chapters) {
3259 AVChapter *ch1 = timetable[i + 1];
3260 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3262 if (next_start > ch->start && next_start < end)
3265 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3271 static int get_std_framerate(int i)
3274 return (i + 1) * 1001;
3278 return (i + 31) * 1001 * 12;
3282 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3286 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3289 /* Is the time base unreliable?
3290 * This is a heuristic to balance between quick acceptance of the values in
3291 * the headers vs. some extra checks.
3292 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3293 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3294 * And there are "variable" fps files this needs to detect as well. */
3295 static int tb_unreliable(AVCodecContext *c)
3297 if (c->time_base.den >= 101LL * c->time_base.num ||
3298 c->time_base.den < 5LL * c->time_base.num ||
3299 // c->codec_tag == AV_RL32("DIVX") ||
3300 // c->codec_tag == AV_RL32("XVID") ||
3301 c->codec_tag == AV_RL32("mp4v") ||
3302 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3303 c->codec_id == AV_CODEC_ID_GIF ||
3304 c->codec_id == AV_CODEC_ID_HEVC ||
3305 c->codec_id == AV_CODEC_ID_H264)
3310 int ff_alloc_extradata(AVCodecParameters *par, int size)
3312 av_freep(&par->extradata);
3313 par->extradata_size = 0;
3315 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3316 return AVERROR(EINVAL);
3318 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3319 if (!par->extradata)
3320 return AVERROR(ENOMEM);
3322 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3323 par->extradata_size = size;
3328 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3330 int ret = ff_alloc_extradata(par, size);
3333 ret = avio_read(pb, par->extradata, size);
3335 av_freep(&par->extradata);
3336 par->extradata_size = 0;
3337 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3338 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3344 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3347 int64_t last = st->internal->info->last_dts;
3349 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3350 && ts - (uint64_t)last < INT64_MAX) {
3351 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3352 int64_t duration = ts - last;
3354 if (!st->internal->info->duration_error)
3355 st->internal->info->duration_error = av_mallocz(sizeof(st->internal->info->duration_error[0])*2);
3356 if (!st->internal->info->duration_error)
3357 return AVERROR(ENOMEM);
3359 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3360 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3361 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3362 if (st->internal->info->duration_error[0][1][i] < 1e10) {
3363 int framerate = get_std_framerate(i);
3364 double sdts = dts*framerate/(1001*12);
3365 for (j= 0; j<2; j++) {
3366 int64_t ticks = llrint(sdts+j*0.5);
3367 double error= sdts - ticks + j*0.5;
3368 st->internal->info->duration_error[j][0][i] += error;
3369 st->internal->info->duration_error[j][1][i] += error*error;
3373 if (st->internal->info->rfps_duration_sum <= INT64_MAX - duration) {
3374 st->internal->info->duration_count++;
3375 st->internal->info->rfps_duration_sum += duration;
3378 if (st->internal->info->duration_count % 10 == 0) {
3379 int n = st->internal->info->duration_count;
3380 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3381 if (st->internal->info->duration_error[0][1][i] < 1e10) {
3382 double a0 = st->internal->info->duration_error[0][0][i] / n;
3383 double error0 = st->internal->info->duration_error[0][1][i] / n - a0*a0;
3384 double a1 = st->internal->info->duration_error[1][0][i] / n;
3385 double error1 = st->internal->info->duration_error[1][1][i] / n - a1*a1;
3386 if (error0 > 0.04 && error1 > 0.04) {
3387 st->internal->info->duration_error[0][1][i] = 2e10;
3388 st->internal->info->duration_error[1][1][i] = 2e10;
3394 // ignore the first 4 values, they might have some random jitter
3395 if (st->internal->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3396 st->internal->info->duration_gcd = av_gcd(st->internal->info->duration_gcd, duration);
3398 if (ts != AV_NOPTS_VALUE)
3399 st->internal->info->last_dts = ts;
3404 void ff_rfps_calculate(AVFormatContext *ic)
3408 for (i = 0; i < ic->nb_streams; i++) {
3409 AVStream *st = ic->streams[i];
3411 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3413 // the check for tb_unreliable() is not completely correct, since this is not about handling
3414 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3415 // ipmovie.c produces.
3416 if (tb_unreliable(st->internal->avctx) && st->internal->info->duration_count > 15 && st->internal->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
3417 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->internal->info->duration_gcd, INT_MAX);
3418 if (st->internal->info->duration_count>1 && !st->r_frame_rate.num
3419 && tb_unreliable(st->internal->avctx)) {
3421 double best_error= 0.01;
3422 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3424 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3427 if (st->internal->info->codec_info_duration &&
3428 st->internal->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3430 if (!st->internal->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3433 if (av_q2d(st->time_base) * st->internal->info->rfps_duration_sum / st->internal->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3436 for (k= 0; k<2; k++) {
3437 int n = st->internal->info->duration_count;
3438 double a= st->internal->info->duration_error[k][0][j] / n;
3439 double error= st->internal->info->duration_error[k][1][j]/n - a*a;
3441 if (error < best_error && best_error> 0.000000001) {
3443 num = get_std_framerate(j);
3446 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3449 // do not increase frame rate by more than 1 % in order to match a standard rate.
3450 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3451 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3453 if ( !st->avg_frame_rate.num
3454 && st->r_frame_rate.num && st->internal->info->rfps_duration_sum
3455 && st->internal->info->codec_info_duration <= 0
3456 && st->internal->info->duration_count > 2
3457 && fabs(1.0 / (av_q2d(st->r_frame_rate) * av_q2d(st->time_base)) - st->internal->info->rfps_duration_sum / (double)st->internal->info->duration_count) <= 1.0
3459 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3460 st->avg_frame_rate = st->r_frame_rate;
3463 av_freep(&st->internal->info->duration_error);
3464 st->internal->info->last_dts = AV_NOPTS_VALUE;
3465 st->internal->info->duration_count = 0;
3466 st->internal->info->rfps_duration_sum = 0;
3470 static int extract_extradata_check(AVStream *st)
3472 const AVBitStreamFilter *f;
3474 f = av_bsf_get_by_name("extract_extradata");
3479 const enum AVCodecID *ids;
3480 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3481 if (*ids == st->codecpar->codec_id)
3488 static int extract_extradata_init(AVStream *st)
3490 AVStreamInternal *sti = st->internal;
3491 const AVBitStreamFilter *f;
3494 f = av_bsf_get_by_name("extract_extradata");
3498 /* check that the codec id is supported */
3499 ret = extract_extradata_check(st);
3503 sti->extract_extradata.pkt = av_packet_alloc();
3504 if (!sti->extract_extradata.pkt)
3505 return AVERROR(ENOMEM);
3507 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3511 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3516 sti->extract_extradata.bsf->time_base_in = st->time_base;
3518 ret = av_bsf_init(sti->extract_extradata.bsf);
3523 sti->extract_extradata.inited = 1;
3527 av_bsf_free(&sti->extract_extradata.bsf);
3528 av_packet_free(&sti->extract_extradata.pkt);
3532 static int extract_extradata(AVStream *st, const AVPacket *pkt)
3534 AVStreamInternal *sti = st->internal;
3538 if (!sti->extract_extradata.inited) {
3539 ret = extract_extradata_init(st);
3544 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3547 pkt_ref = sti->extract_extradata.pkt;
3548 ret = av_packet_ref(pkt_ref, pkt);
3552 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3554 av_packet_unref(pkt_ref);
3558 while (ret >= 0 && !sti->avctx->extradata) {
3559 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3561 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3566 for (int i = 0; i < pkt_ref->side_data_elems; i++) {
3567 AVPacketSideData *side_data = &pkt_ref->side_data[i];
3568 if (side_data->type == AV_PKT_DATA_NEW_EXTRADATA) {
3569 sti->avctx->extradata = side_data->data;
3570 sti->avctx->extradata_size = side_data->size;
3571 side_data->data = NULL;
3572 side_data->size = 0;
3576 av_packet_unref(pkt_ref);
3582 static int add_coded_side_data(AVStream *st, AVCodecContext *avctx)
3586 for (i = 0; i < avctx->nb_coded_side_data; i++) {
3587 const AVPacketSideData *sd_src = &avctx->coded_side_data[i];
3589 dst_data = av_stream_new_side_data(st, sd_src->type, sd_src->size);
3591 return AVERROR(ENOMEM);
3592 memcpy(dst_data, sd_src->data, sd_src->size);
3597 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3599 int i, count = 0, ret = 0, j;
3602 AVCodecContext *avctx;
3603 AVPacket *pkt1 = ic->internal->pkt;
3604 int64_t old_offset = avio_tell(ic->pb);
3605 // new streams might appear, no options for those
3606 int orig_nb_streams = ic->nb_streams;
3608 int64_t max_analyze_duration = ic->max_analyze_duration;
3609 int64_t max_stream_analyze_duration;
3610 int64_t max_subtitle_analyze_duration;
3611 int64_t probesize = ic->probesize;
3612 int eof_reached = 0;
3613 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3615 flush_codecs = probesize > 0;
3617 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3619 max_stream_analyze_duration = max_analyze_duration;
3620 max_subtitle_analyze_duration = max_analyze_duration;
3621 if (!max_analyze_duration) {
3622 max_stream_analyze_duration =
3623 max_analyze_duration = 5*AV_TIME_BASE;
3624 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3625 if (!strcmp(ic->iformat->name, "flv"))
3626 max_stream_analyze_duration = 90*AV_TIME_BASE;
3627 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3628 max_stream_analyze_duration = 7*AV_TIME_BASE;
3632 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3633 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3635 for (i = 0; i < ic->nb_streams; i++) {
3636 const AVCodec *codec;
3637 AVDictionary *thread_opt = NULL;
3638 st = ic->streams[i];
3639 avctx = st->internal->avctx;
3641 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3642 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3643 /* if (!st->time_base.num)
3645 if (!avctx->time_base.num)
3646 avctx->time_base = st->time_base;
3649 /* check if the caller has overridden the codec id */
3650 #if FF_API_LAVF_AVCTX
3651 FF_DISABLE_DEPRECATION_WARNINGS
3652 if (st->codec->codec_id != st->internal->orig_codec_id) {
3653 st->codecpar->codec_id = st->codec->codec_id;
3654 st->codecpar->codec_type = st->codec->codec_type;
3655 st->internal->orig_codec_id = st->codec->codec_id;
3657 FF_ENABLE_DEPRECATION_WARNINGS
3659 // only for the split stuff
3660 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->internal->request_probe <= 0) {
3661 st->parser = av_parser_init(st->codecpar->codec_id);
3663 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3664 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3665 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3666 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3668 } else if (st->need_parsing) {
3669 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3670 "%s, packets or times may be invalid.\n",
3671 avcodec_get_name(st->codecpar->codec_id));
3675 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3676 st->internal->orig_codec_id = st->codecpar->codec_id;
3678 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3680 goto find_stream_info_err;
3681 if (st->internal->request_probe <= 0)
3682 st->internal->avctx_inited = 1;
3684 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3686 /* Force thread count to 1 since the H.264 decoder will not extract
3687 * SPS and PPS to extradata during multi-threaded decoding. */
3688 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3689 /* Force lowres to 0. The decoder might reduce the video size by the
3690 * lowres factor, and we don't want that propagated to the stream's
3692 av_dict_set(options ? &options[i] : &thread_opt, "lowres", "0", 0);
3694 if (ic->codec_whitelist)
3695 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3697 /* Ensure that subtitle_header is properly set. */
3698 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3699 && codec && !avctx->codec) {
3700 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3701 av_log(ic, AV_LOG_WARNING,
3702 "Failed to open codec in %s\n",__FUNCTION__);
3705 // Try to just open decoders, in case this is enough to get parameters.
3706 if (!has_codec_parameters(st, NULL) && st->internal->request_probe <= 0) {
3707 if (codec && !avctx->codec)
3708 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3709 av_log(ic, AV_LOG_WARNING,
3710 "Failed to open codec in %s\n",__FUNCTION__);
3713 av_dict_free(&thread_opt);
3716 for (i = 0; i < ic->nb_streams; i++) {
3717 #if FF_API_R_FRAME_RATE
3718 ic->streams[i]->internal->info->last_dts = AV_NOPTS_VALUE;
3720 ic->streams[i]->internal->info->fps_first_dts = AV_NOPTS_VALUE;
3721 ic->streams[i]->internal->info->fps_last_dts = AV_NOPTS_VALUE;
3726 const AVPacket *pkt;
3727 int analyzed_all_streams;
3728 if (ff_check_interrupt(&ic->interrupt_callback)) {
3730 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3734 /* check if one codec still needs to be handled */
3735 for (i = 0; i < ic->nb_streams; i++) {
3736 int fps_analyze_framecount = 20;
3739 st = ic->streams[i];
3740 if (!has_codec_parameters(st, NULL))
3742 /* If the timebase is coarse (like the usual millisecond precision
3743 * of mkv), we need to analyze more frames to reliably arrive at
3744 * the correct fps. */
3745 if (av_q2d(st->time_base) > 0.0005)
3746 fps_analyze_framecount *= 2;
3747 if (!tb_unreliable(st->internal->avctx))
3748 fps_analyze_framecount = 0;
3749 if (ic->fps_probe_size >= 0)
3750 fps_analyze_framecount = ic->fps_probe_size;
3751 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3752 fps_analyze_framecount = 0;
3753 /* variable fps and no guess at the real fps */
3754 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3755 st->internal->info->codec_info_duration_fields/2 :
3756 st->internal->info->duration_count;
3757 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3758 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3759 if (count < fps_analyze_framecount)
3762 // Look at the first 3 frames if there is evidence of frame delay
3763 // but the decoder delay is not set.
3764 if (st->internal->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3766 if (!st->internal->avctx->extradata &&
3767 (!st->internal->extract_extradata.inited ||
3768 st->internal->extract_extradata.bsf) &&
3769 extract_extradata_check(st))
3771 if (st->first_dts == AV_NOPTS_VALUE &&
3772 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3773 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3774 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3775 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3778 analyzed_all_streams = 0;
3779 if (!missing_streams || !*missing_streams)
3780 if (i == ic->nb_streams) {
3781 analyzed_all_streams = 1;
3782 /* NOTE: If the format has no header, then we need to read some
3783 * packets to get most of the streams, so we cannot stop here. */
3784 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3785 /* If we found the info for all the codecs, we can stop. */
3787 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3792 /* We did not get all the codec info, but we read too much data. */
3793 if (read_size >= probesize) {
3795 av_log(ic, AV_LOG_DEBUG,
3796 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3797 for (i = 0; i < ic->nb_streams; i++)
3798 if (!ic->streams[i]->r_frame_rate.num &&
3799 ic->streams[i]->internal->info->duration_count <= 1 &&
3800 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3801 strcmp(ic->iformat->name, "image2"))
3802 av_log(ic, AV_LOG_WARNING,
3803 "Stream #%d: not enough frames to estimate rate; "
3804 "consider increasing probesize\n", i);
3808 /* NOTE: A new stream can be added there if no header in file
3809 * (AVFMTCTX_NOHEADER). */
3810 ret = read_frame_internal(ic, pkt1);
3811 if (ret == AVERROR(EAGAIN))
3820 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3821 ret = avpriv_packet_list_put(&ic->internal->packet_buffer,
3822 &ic->internal->packet_buffer_end,
3825 goto unref_then_goto_end;
3827 pkt = &ic->internal->packet_buffer_end->pkt;
3832 st = ic->streams[pkt->stream_index];
3833 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3834 read_size += pkt->size;
3836 avctx = st->internal->avctx;
3837 if (!st->internal->avctx_inited) {
3838 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3840 goto unref_then_goto_end;
3841 st->internal->avctx_inited = 1;
3844 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3845 /* check for non-increasing dts */
3846 if (st->internal->info->fps_last_dts != AV_NOPTS_VALUE &&
3847 st->internal->info->fps_last_dts >= pkt->dts) {
3848 av_log(ic, AV_LOG_DEBUG,
3849 "Non-increasing DTS in stream %d: packet %d with DTS "
3850 "%"PRId64", packet %d with DTS %"PRId64"\n",
3851 st->index, st->internal->info->fps_last_dts_idx,
3852 st->internal->info->fps_last_dts, st->codec_info_nb_frames,
3854 st->internal->info->fps_first_dts =
3855 st->internal->info->fps_last_dts = AV_NOPTS_VALUE;
3857 /* Check for a discontinuity in dts. If the difference in dts
3858 * is more than 1000 times the average packet duration in the
3859 * sequence, we treat it as a discontinuity. */
3860 if (st->internal->info->fps_last_dts != AV_NOPTS_VALUE &&
3861 st->internal->info->fps_last_dts_idx > st->internal->info->fps_first_dts_idx &&
3862 (pkt->dts - (uint64_t)st->internal->info->fps_last_dts) / 1000 >
3863 (st->internal->info->fps_last_dts - (uint64_t)st->internal->info->fps_first_dts) /
3864 (st->internal->info->fps_last_dts_idx - st->internal->info->fps_first_dts_idx)) {
3865 av_log(ic, AV_LOG_WARNING,
3866 "DTS discontinuity in stream %d: packet %d with DTS "
3867 "%"PRId64", packet %d with DTS %"PRId64"\n",
3868 st->index, st->internal->info->fps_last_dts_idx,
3869 st->internal->info->fps_last_dts, st->codec_info_nb_frames,
3871 st->internal->info->fps_first_dts =
3872 st->internal->info->fps_last_dts = AV_NOPTS_VALUE;
3875 /* update stored dts values */
3876 if (st->internal->info->fps_first_dts == AV_NOPTS_VALUE) {
3877 st->internal->info->fps_first_dts = pkt->dts;
3878 st->internal->info->fps_first_dts_idx = st->codec_info_nb_frames;
3880 st->internal->info->fps_last_dts = pkt->dts;
3881 st->internal->info->fps_last_dts_idx = st->codec_info_nb_frames;
3883 if (st->codec_info_nb_frames>1) {
3887 if (st->time_base.den > 0)
3888 t = av_rescale_q(st->internal->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3889 if (st->avg_frame_rate.num > 0)
3890 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3893 && st->codec_info_nb_frames>30
3894 && st->internal->info->fps_first_dts != AV_NOPTS_VALUE
3895 && st->internal->info->fps_last_dts != AV_NOPTS_VALUE) {
3896 int64_t dur = av_sat_sub64(st->internal->info->fps_last_dts, st->internal->info->fps_first_dts);
3897 t = FFMAX(t, av_rescale_q(dur, st->time_base, AV_TIME_BASE_Q));
3900 if (analyzed_all_streams) limit = max_analyze_duration;
3901 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3902 else limit = max_stream_analyze_duration;
3905 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3907 t, pkt->stream_index);
3908 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3909 av_packet_unref(pkt1);
3912 if (pkt->duration) {
3913 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3914 st->internal->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->internal->info->codec_info_duration + pkt->duration);
3916 st->internal->info->codec_info_duration += pkt->duration;
3917 st->internal->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3920 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3921 #if FF_API_R_FRAME_RATE
3922 ff_rfps_add_frame(ic, st, pkt->dts);
3924 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3925 st->internal->info->frame_delay_evidence = 1;
3927 if (!st->internal->avctx->extradata) {
3928 ret = extract_extradata(st, pkt);
3930 goto unref_then_goto_end;
3933 /* If still no information, we try to open the codec and to
3934 * decompress the frame. We try to avoid that in most cases as
3935 * it takes longer and uses more memory. For MPEG-4, we need to
3936 * decompress for QuickTime.
3938 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3939 * least one frame of codec data, this makes sure the codec initializes
3940 * the channel configuration and does not only trust the values from
3942 try_decode_frame(ic, st, pkt,
3943 (options && i < orig_nb_streams) ? &options[i] : NULL);
3945 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3946 av_packet_unref(pkt1);
3948 st->codec_info_nb_frames++;
3954 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3955 st = ic->streams[stream_index];
3956 avctx = st->internal->avctx;
3957 if (!has_codec_parameters(st, NULL)) {
3958 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3959 if (codec && !avctx->codec) {
3960 AVDictionary *opts = NULL;
3961 if (ic->codec_whitelist)
3962 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3963 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3964 av_log(ic, AV_LOG_WARNING,
3965 "Failed to open codec in %s\n",__FUNCTION__);
3966 av_dict_free(&opts);
3970 // EOF already reached while reading the stream above.
3971 // So continue with reoordering DTS with whatever delay we have.
3972 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3973 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3979 AVPacket *empty_pkt = ic->internal->pkt;
3981 av_packet_unref(empty_pkt);
3983 for (i = 0; i < ic->nb_streams; i++) {
3985 st = ic->streams[i];
3987 /* flush the decoders */
3988 if (st->internal->info->found_decoder == 1) {
3990 err = try_decode_frame(ic, st, empty_pkt,
3991 (options && i < orig_nb_streams)
3992 ? &options[i] : NULL);
3993 } while (err > 0 && !has_codec_parameters(st, NULL));
3996 av_log(ic, AV_LOG_INFO,
3997 "decoding for stream %d failed\n", st->index);
4003 ff_rfps_calculate(ic);
4005 for (i = 0; i < ic->nb_streams; i++) {
4006 st = ic->streams[i];
4007 avctx = st->internal->avctx;
4008 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
4009 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
4010 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
4011 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
4012 avctx->codec_tag= tag;
4015 /* estimate average framerate if not set by demuxer */
4016 if (st->internal->info->codec_info_duration_fields &&
4017 !st->avg_frame_rate.num &&
4018 st->internal->info->codec_info_duration) {
4020 double best_error = 0.01;
4021 AVRational codec_frame_rate = avctx->framerate;
4023 if (st->internal->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4024 st->internal->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4025 st->internal->info->codec_info_duration < 0)
4027 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4028 st->internal->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4029 st->internal->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4031 /* Round guessed framerate to a "standard" framerate if it's
4032 * within 1% of the original estimate. */
4033 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4034 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4035 double error = fabs(av_q2d(st->avg_frame_rate) /
4036 av_q2d(std_fps) - 1);
4038 if (error < best_error) {
4040 best_fps = std_fps.num;
4043 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4044 error = fabs(av_q2d(codec_frame_rate) /
4045 av_q2d(std_fps) - 1);
4046 if (error < best_error) {
4048 best_fps = std_fps.num;
4053 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4054 best_fps, 12 * 1001, INT_MAX);
4057 if (!st->r_frame_rate.num) {
4058 if ( avctx->time_base.den * (int64_t) st->time_base.num
4059 <= avctx->time_base.num * avctx->ticks_per_frame * (uint64_t) st->time_base.den) {
4060 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4061 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4063 st->r_frame_rate.num = st->time_base.den;
4064 st->r_frame_rate.den = st->time_base.num;
4067 if (st->internal->display_aspect_ratio.num && st->internal->display_aspect_ratio.den) {
4068 AVRational hw_ratio = { avctx->height, avctx->width };
4069 st->sample_aspect_ratio = av_mul_q(st->internal->display_aspect_ratio,
4072 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4073 if (!avctx->bits_per_coded_sample)
4074 avctx->bits_per_coded_sample =
4075 av_get_bits_per_sample(avctx->codec_id);
4076 // set stream disposition based on audio service type
4077 switch (avctx->audio_service_type) {
4078 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4079 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4081 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4082 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4084 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4085 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4087 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4088 st->disposition = AV_DISPOSITION_COMMENT;
4090 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4091 st->disposition = AV_DISPOSITION_KARAOKE;
4098 estimate_timings(ic, old_offset);
4100 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4102 if (ret >= 0 && ic->nb_streams)
4103 /* We could not have all the codec parameters before EOF. */
4105 for (i = 0; i < ic->nb_streams; i++) {
4107 st = ic->streams[i];
4109 /* if no packet was ever seen, update context now for has_codec_parameters */
4110 if (!st->internal->avctx_inited) {
4111 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4112 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4113 st->codecpar->format = st->internal->avctx->sample_fmt;
4114 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4116 goto find_stream_info_err;
4118 if (!has_codec_parameters(st, &errmsg)) {
4120 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4121 av_log(ic, AV_LOG_WARNING,
4122 "Could not find codec parameters for stream %d (%s): %s\n"
4123 "Consider increasing the value for the 'analyzeduration' (%"PRId64") and 'probesize' (%"PRId64") options\n",
4124 i, buf, errmsg, ic->max_analyze_duration, ic->probesize);
4130 ret = compute_chapters_end(ic);
4132 goto find_stream_info_err;
4134 /* update the stream parameters from the internal codec contexts */
4135 for (i = 0; i < ic->nb_streams; i++) {
4136 st = ic->streams[i];
4138 if (st->internal->avctx_inited) {
4139 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4141 goto find_stream_info_err;
4142 ret = add_coded_side_data(st, st->internal->avctx);
4144 goto find_stream_info_err;
4147 #if FF_API_LAVF_AVCTX
4148 FF_DISABLE_DEPRECATION_WARNINGS
4149 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4151 goto find_stream_info_err;
4153 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4154 // by the lowres factor.
4155 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4156 st->codec->lowres = st->internal->avctx->lowres;
4157 st->codec->width = st->internal->avctx->width;
4158 st->codec->height = st->internal->avctx->height;
4161 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4162 st->codec->time_base = st->internal->avctx->time_base;
4163 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4165 st->codec->framerate = st->avg_frame_rate;
4167 if (st->internal->avctx->subtitle_header) {
4168 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4169 if (!st->codec->subtitle_header)
4170 goto find_stream_info_err;
4171 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4172 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4173 st->codec->subtitle_header_size);
4176 // Fields unavailable in AVCodecParameters
4177 st->codec->coded_width = st->internal->avctx->coded_width;
4178 st->codec->coded_height = st->internal->avctx->coded_height;
4179 st->codec->properties = st->internal->avctx->properties;
4180 FF_ENABLE_DEPRECATION_WARNINGS
4183 st->internal->avctx_inited = 0;
4186 find_stream_info_err:
4187 for (i = 0; i < ic->nb_streams; i++) {
4188 st = ic->streams[i];
4189 if (st->internal->info)
4190 av_freep(&st->internal->info->duration_error);
4191 avcodec_close(ic->streams[i]->internal->avctx);
4192 av_freep(&ic->streams[i]->internal->info);
4193 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4194 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4197 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4198 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4201 unref_then_goto_end:
4202 av_packet_unref(pkt1);
4203 goto find_stream_info_err;
4206 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4210 for (i = 0; i < ic->nb_programs; i++) {
4211 if (ic->programs[i] == last) {
4215 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4216 if (ic->programs[i]->stream_index[j] == s)
4217 return ic->programs[i];
4223 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4224 int wanted_stream_nb, int related_stream,
4225 AVCodec **decoder_ret, int flags)
4227 int i, nb_streams = ic->nb_streams;
4228 int ret = AVERROR_STREAM_NOT_FOUND;
4229 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4230 int count, multiframe, disposition;
4231 int64_t best_bitrate = -1;
4233 unsigned *program = NULL;
4234 const AVCodec *decoder = NULL, *best_decoder = NULL;
4236 if (related_stream >= 0 && wanted_stream_nb < 0) {
4237 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4239 program = p->stream_index;
4240 nb_streams = p->nb_stream_indexes;
4243 for (i = 0; i < nb_streams; i++) {
4244 int real_stream_index = program ? program[i] : i;
4245 AVStream *st = ic->streams[real_stream_index];
4246 AVCodecParameters *par = st->codecpar;
4247 if (par->codec_type != type)
4249 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4251 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4254 decoder = find_decoder(ic, st, par->codec_id);
4257 ret = AVERROR_DECODER_NOT_FOUND;
4261 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4262 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4263 count = st->codec_info_nb_frames;
4264 bitrate = par->bit_rate;
4265 multiframe = FFMIN(5, count);
4266 if ((best_disposition > disposition) ||
4267 (best_disposition == disposition && best_multiframe > multiframe) ||
4268 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4269 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4271 best_disposition = disposition;
4273 best_bitrate = bitrate;
4274 best_multiframe = multiframe;
4275 ret = real_stream_index;
4276 best_decoder = decoder;
4277 if (program && i == nb_streams - 1 && ret < 0) {
4279 nb_streams = ic->nb_streams;
4280 /* no related stream found, try again with everything */
4285 *decoder_ret = (AVCodec*)best_decoder;
4289 /*******************************************************/
4291 int av_read_play(AVFormatContext *s)
4293 if (s->iformat->read_play)
4294 return s->iformat->read_play(s);
4296 return avio_pause(s->pb, 0);
4297 return AVERROR(ENOSYS);
4300 int av_read_pause(AVFormatContext *s)
4302 if (s->iformat->read_pause)
4303 return s->iformat->read_pause(s);
4305 return avio_pause(s->pb, 1);
4306 return AVERROR(ENOSYS);
4309 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4314 dst->time_base = src->time_base;
4315 dst->nb_frames = src->nb_frames;
4316 dst->disposition = src->disposition;
4317 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4318 dst->avg_frame_rate = src->avg_frame_rate;
4319 dst->r_frame_rate = src->r_frame_rate;
4321 av_dict_free(&dst->metadata);
4322 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4326 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4330 /* Free existing side data*/
4331 for (i = 0; i < dst->nb_side_data; i++)
4332 av_free(dst->side_data[i].data);
4333 av_freep(&dst->side_data);
4334 dst->nb_side_data = 0;
4336 /* Copy side data if present */
4337 if (src->nb_side_data) {
4338 dst->side_data = av_mallocz_array(src->nb_side_data,
4339 sizeof(AVPacketSideData));
4340 if (!dst->side_data)
4341 return AVERROR(ENOMEM);
4342 dst->nb_side_data = src->nb_side_data;
4344 for (i = 0; i < src->nb_side_data; i++) {
4345 uint8_t *data = av_memdup(src->side_data[i].data,
4346 src->side_data[i].size);
4348 return AVERROR(ENOMEM);
4349 dst->side_data[i].type = src->side_data[i].type;
4350 dst->side_data[i].size = src->side_data[i].size;
4351 dst->side_data[i].data = data;
4355 #if FF_API_LAVF_FFSERVER
4356 FF_DISABLE_DEPRECATION_WARNINGS
4357 av_freep(&dst->recommended_encoder_configuration);
4358 if (src->recommended_encoder_configuration) {
4359 const char *conf_str = src->recommended_encoder_configuration;
4360 dst->recommended_encoder_configuration = av_strdup(conf_str);
4361 if (!dst->recommended_encoder_configuration)
4362 return AVERROR(ENOMEM);
4364 FF_ENABLE_DEPRECATION_WARNINGS
4370 static void free_stream(AVStream **pst)
4372 AVStream *st = *pst;
4378 for (i = 0; i < st->nb_side_data; i++)
4379 av_freep(&st->side_data[i].data);
4380 av_freep(&st->side_data);
4383 av_parser_close(st->parser);
4385 if (st->attached_pic.data)
4386 av_packet_unref(&st->attached_pic);
4389 avcodec_free_context(&st->internal->avctx);
4390 av_bsf_free(&st->internal->bsfc);
4391 av_freep(&st->internal->priv_pts);
4392 av_freep(&st->internal->index_entries);
4393 av_freep(&st->internal->probe_data.buf);
4395 av_bsf_free(&st->internal->extract_extradata.bsf);
4396 av_packet_free(&st->internal->extract_extradata.pkt);
4398 if (st->internal->info)
4399 av_freep(&st->internal->info->duration_error);
4400 av_freep(&st->internal->info);
4402 av_freep(&st->internal);
4404 av_dict_free(&st->metadata);
4405 avcodec_parameters_free(&st->codecpar);
4406 #if FF_API_LAVF_AVCTX
4407 FF_DISABLE_DEPRECATION_WARNINGS
4408 avcodec_free_context(&st->codec);
4409 FF_ENABLE_DEPRECATION_WARNINGS
4411 av_freep(&st->priv_data);
4412 #if FF_API_LAVF_FFSERVER
4413 FF_DISABLE_DEPRECATION_WARNINGS
4414 av_freep(&st->recommended_encoder_configuration);
4415 FF_ENABLE_DEPRECATION_WARNINGS
4421 void ff_free_stream(AVFormatContext *s, AVStream *st)
4423 av_assert0(s->nb_streams>0);
4424 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4426 free_stream(&s->streams[ --s->nb_streams ]);
4429 void avformat_free_context(AVFormatContext *s)
4436 if (s->oformat && s->oformat->deinit && s->internal->initialized)
4437 s->oformat->deinit(s);
4440 if (s->iformat && s->iformat->priv_class && s->priv_data)
4441 av_opt_free(s->priv_data);
4442 if (s->oformat && s->oformat->priv_class && s->priv_data)
4443 av_opt_free(s->priv_data);
4445 for (i = 0; i < s->nb_streams; i++)
4446 free_stream(&s->streams[i]);
4449 for (i = 0; i < s->nb_programs; i++) {
4450 av_dict_free(&s->programs[i]->metadata);
4451 av_freep(&s->programs[i]->stream_index);
4452 av_freep(&s->programs[i]);
4456 av_freep(&s->programs);
4457 av_freep(&s->priv_data);
4458 while (s->nb_chapters--) {
4459 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4460 av_freep(&s->chapters[s->nb_chapters]);
4462 av_freep(&s->chapters);
4463 av_dict_free(&s->metadata);
4464 av_dict_free(&s->internal->id3v2_meta);
4465 av_packet_free(&s->internal->pkt);
4466 av_packet_free(&s->internal->parse_pkt);
4467 av_freep(&s->streams);
4468 flush_packet_queue(s);
4469 av_freep(&s->internal);
4474 void avformat_close_input(AVFormatContext **ps)
4485 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4486 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4489 flush_packet_queue(s);
4492 if (s->iformat->read_close)
4493 s->iformat->read_close(s);
4495 avformat_free_context(s);
4502 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4508 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4509 if (s->max_streams < INT_MAX/sizeof(*streams))
4510 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);
4513 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4516 s->streams = streams;
4518 st = av_mallocz(sizeof(AVStream));
4522 #if FF_API_LAVF_AVCTX
4523 FF_DISABLE_DEPRECATION_WARNINGS
4524 st->codec = avcodec_alloc_context3(c);
4529 FF_ENABLE_DEPRECATION_WARNINGS
4532 st->internal = av_mallocz(sizeof(*st->internal));
4536 st->internal->info = av_mallocz(sizeof(*st->internal->info));
4537 if (!st->internal->info)
4539 st->internal->info->last_dts = AV_NOPTS_VALUE;
4541 st->codecpar = avcodec_parameters_alloc();
4545 st->internal->avctx = avcodec_alloc_context3(NULL);
4546 if (!st->internal->avctx)
4550 #if FF_API_LAVF_AVCTX
4551 FF_DISABLE_DEPRECATION_WARNINGS
4552 /* no default bitrate if decoding */
4553 st->codec->bit_rate = 0;
4554 FF_ENABLE_DEPRECATION_WARNINGS
4557 /* default pts setting is MPEG-like */
4558 avpriv_set_pts_info(st, 33, 1, 90000);
4559 /* we set the current DTS to 0 so that formats without any timestamps
4560 * but durations get some timestamps, formats with some unknown
4561 * timestamps have their first few packets buffered and the
4562 * timestamps corrected before they are returned to the user */
4563 st->cur_dts = RELATIVE_TS_BASE;
4565 st->cur_dts = AV_NOPTS_VALUE;
4568 st->index = s->nb_streams;
4569 st->start_time = AV_NOPTS_VALUE;
4570 st->duration = AV_NOPTS_VALUE;
4571 st->first_dts = AV_NOPTS_VALUE;
4572 st->probe_packets = s->max_probe_packets;
4573 st->internal->pts_wrap_reference = AV_NOPTS_VALUE;
4574 st->internal->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4576 st->last_IP_pts = AV_NOPTS_VALUE;
4577 st->internal->last_dts_for_order_check = AV_NOPTS_VALUE;
4578 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4579 st->internal->pts_buffer[i] = AV_NOPTS_VALUE;
4581 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4583 #if FF_API_R_FRAME_RATE
4584 st->internal->info->last_dts = AV_NOPTS_VALUE;
4586 st->internal->info->fps_first_dts = AV_NOPTS_VALUE;
4587 st->internal->info->fps_last_dts = AV_NOPTS_VALUE;
4589 st->internal->inject_global_side_data = s->internal->inject_global_side_data;
4591 st->internal->need_context_update = 1;
4593 s->streams[s->nb_streams++] = st;
4600 AVProgram *av_new_program(AVFormatContext *ac, int id)
4602 AVProgram *program = NULL;
4605 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4607 for (i = 0; i < ac->nb_programs; i++)
4608 if (ac->programs[i]->id == id)
4609 program = ac->programs[i];
4612 program = av_mallocz(sizeof(AVProgram));
4615 dynarray_add(&ac->programs, &ac->nb_programs, program);
4616 program->discard = AVDISCARD_NONE;
4617 program->pmt_version = -1;
4619 program->pts_wrap_reference = AV_NOPTS_VALUE;
4620 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4621 program->start_time =
4622 program->end_time = AV_NOPTS_VALUE;
4627 #if FF_API_CHAPTER_ID_INT
4628 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4630 AVChapter *avpriv_new_chapter(AVFormatContext *s, int64_t id, AVRational time_base,
4632 int64_t start, int64_t end, const char *title)
4634 AVChapter *chapter = NULL;
4637 if (end != AV_NOPTS_VALUE && start > end) {
4638 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4642 if (!s->nb_chapters) {
4643 s->internal->chapter_ids_monotonic = 1;
4644 } else if (!s->internal->chapter_ids_monotonic || s->chapters[s->nb_chapters-1]->id >= id) {
4645 s->internal->chapter_ids_monotonic = 0;
4646 for (i = 0; i < s->nb_chapters; i++)
4647 if (s->chapters[i]->id == id)
4648 chapter = s->chapters[i];
4652 chapter = av_mallocz(sizeof(AVChapter));
4655 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4657 av_dict_set(&chapter->metadata, "title", title, 0);
4659 chapter->time_base = time_base;
4660 chapter->start = start;
4666 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4669 AVProgram *program = NULL;
4672 if (idx >= ac->nb_streams) {
4673 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4677 for (i = 0; i < ac->nb_programs; i++) {
4678 if (ac->programs[i]->id != progid)
4680 program = ac->programs[i];
4681 for (j = 0; j < program->nb_stream_indexes; j++)
4682 if (program->stream_index[j] == idx)
4685 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4688 program->stream_index = tmp;
4689 program->stream_index[program->nb_stream_indexes++] = idx;
4694 uint64_t ff_ntp_time(void)
4696 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4699 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4701 uint64_t ntp_ts, frac_part, sec;
4704 //current ntp time in seconds and micro seconds
4705 sec = ntp_time_us / 1000000;
4706 usec = ntp_time_us % 1000000;
4708 //encoding in ntp timestamp format
4709 frac_part = usec * 0xFFFFFFFFULL;
4710 frac_part /= 1000000;
4712 if (sec > 0xFFFFFFFFULL)
4713 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4716 ntp_ts |= frac_part;
4721 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4724 char *q, buf1[20], c;
4725 int nd, len, percentd_found;
4737 while (av_isdigit(*p)) {
4738 if (nd >= INT_MAX / 10 - 255)
4740 nd = nd * 10 + *p++ - '0';
4743 } while (av_isdigit(c));
4749 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4754 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4756 if ((q - buf + len) > buf_size - 1)
4758 memcpy(q, buf1, len);
4766 if ((q - buf) < buf_size - 1)
4770 if (!percentd_found)
4779 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4781 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4784 void av_url_split(char *proto, int proto_size,
4785 char *authorization, int authorization_size,
4786 char *hostname, int hostname_size,
4787 int *port_ptr, char *path, int path_size, const char *url)
4789 const char *p, *ls, *at, *at2, *col, *brk;
4795 if (authorization_size > 0)
4796 authorization[0] = 0;
4797 if (hostname_size > 0)
4802 /* parse protocol */
4803 if ((p = strchr(url, ':'))) {
4804 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4811 /* no protocol means plain filename */
4812 av_strlcpy(path, url, path_size);
4816 /* separate path from hostname */
4817 ls = p + strcspn(p, "/?#");
4818 av_strlcpy(path, ls, path_size);
4820 /* the rest is hostname, use that to parse auth/port */
4822 /* authorization (user[:pass]@hostname) */
4824 while ((at = strchr(p, '@')) && at < ls) {
4825 av_strlcpy(authorization, at2,
4826 FFMIN(authorization_size, at + 1 - at2));
4827 p = at + 1; /* skip '@' */
4830 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4832 av_strlcpy(hostname, p + 1,
4833 FFMIN(hostname_size, brk - p));
4834 if (brk[1] == ':' && port_ptr)
4835 *port_ptr = atoi(brk + 2);
4836 } else if ((col = strchr(p, ':')) && col < ls) {
4837 av_strlcpy(hostname, p,
4838 FFMIN(col + 1 - p, hostname_size));
4840 *port_ptr = atoi(col + 1);
4842 av_strlcpy(hostname, p,
4843 FFMIN(ls + 1 - p, hostname_size));
4847 int ff_mkdir_p(const char *path)
4850 char *temp = av_strdup(path);
4854 if (!path || !temp) {
4858 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4860 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4864 for ( ; *pos != '\0'; ++pos) {
4865 if (*pos == '/' || *pos == '\\') {
4868 ret = mkdir(temp, 0755);
4873 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4874 ret = mkdir(temp, 0755);
4881 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4884 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4887 'C', 'D', 'E', 'F' };
4888 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4891 'c', 'd', 'e', 'f' };
4892 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4894 for (i = 0; i < s; i++) {
4895 buff[i * 2] = hex_table[src[i] >> 4];
4896 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4902 int ff_hex_to_data(uint8_t *data, const char *p)
4909 p += strspn(p, SPACE_CHARS);
4912 c = av_toupper((unsigned char) *p++);
4913 if (c >= '0' && c <= '9')
4915 else if (c >= 'A' && c <= 'F')
4930 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4931 unsigned int pts_num, unsigned int pts_den)
4934 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4935 if (new_tb.num != pts_num)
4936 av_log(NULL, AV_LOG_DEBUG,
4937 "st:%d removing common factor %d from timebase\n",
4938 s->index, pts_num / new_tb.num);
4940 av_log(NULL, AV_LOG_WARNING,
4941 "st:%d has too large timebase, reducing\n", s->index);
4943 if (new_tb.num <= 0 || new_tb.den <= 0) {
4944 av_log(NULL, AV_LOG_ERROR,
4945 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4946 new_tb.num, new_tb.den,
4950 s->time_base = new_tb;
4951 #if FF_API_LAVF_AVCTX
4952 FF_DISABLE_DEPRECATION_WARNINGS
4953 s->codec->pkt_timebase = new_tb;
4954 FF_ENABLE_DEPRECATION_WARNINGS
4956 s->internal->avctx->pkt_timebase = new_tb;
4957 s->pts_wrap_bits = pts_wrap_bits;
4960 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4963 const char *ptr = str;
4965 /* Parse key=value pairs. */
4968 char *dest = NULL, *dest_end;
4969 int key_len, dest_len = 0;
4971 /* Skip whitespace and potential commas. */
4972 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4979 if (!(ptr = strchr(key, '=')))
4982 key_len = ptr - key;
4984 callback_get_buf(context, key, key_len, &dest, &dest_len);
4985 dest_end = dest + dest_len - 1;
4989 while (*ptr && *ptr != '\"') {
4993 if (dest && dest < dest_end)
4997 if (dest && dest < dest_end)
5005 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
5006 if (dest && dest < dest_end)
5014 int ff_find_stream_index(AVFormatContext *s, int id)
5017 for (i = 0; i < s->nb_streams; i++)
5018 if (s->streams[i]->id == id)
5023 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
5027 unsigned int codec_tag;
5028 if (ofmt->query_codec)
5029 return ofmt->query_codec(codec_id, std_compliance);
5030 else if (ofmt->codec_tag)
5031 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
5032 else if (codec_id == ofmt->video_codec ||
5033 codec_id == ofmt->audio_codec ||
5034 codec_id == ofmt->subtitle_codec ||
5035 codec_id == ofmt->data_codec)
5038 return AVERROR_PATCHWELCOME;
5041 int avformat_network_init(void)
5045 if ((ret = ff_network_init()) < 0)
5047 if ((ret = ff_tls_init()) < 0)
5053 int avformat_network_deinit(void)
5062 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5063 uint64_t channel_layout, int32_t sample_rate,
5064 int32_t width, int32_t height)
5070 return AVERROR(EINVAL);
5073 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5075 if (channel_layout) {
5077 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5081 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5083 if (width || height) {
5085 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5087 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5089 return AVERROR(ENOMEM);
5090 bytestream_put_le32(&data, flags);
5092 bytestream_put_le32(&data, channels);
5094 bytestream_put_le64(&data, channel_layout);
5096 bytestream_put_le32(&data, sample_rate);
5097 if (width || height) {
5098 bytestream_put_le32(&data, width);
5099 bytestream_put_le32(&data, height);
5104 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5106 AVRational undef = {0, 1};
5107 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5108 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5109 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5111 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5112 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5113 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5114 stream_sample_aspect_ratio = undef;
5116 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5117 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5118 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5119 frame_sample_aspect_ratio = undef;
5121 if (stream_sample_aspect_ratio.num)
5122 return stream_sample_aspect_ratio;
5124 return frame_sample_aspect_ratio;
5127 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5129 AVRational fr = st->r_frame_rate;
5130 AVRational codec_fr = st->internal->avctx->framerate;
5131 AVRational avg_fr = st->avg_frame_rate;
5133 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5134 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5139 if (st->internal->avctx->ticks_per_frame > 1) {
5140 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5141 (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))
5149 * Matches a stream specifier (but ignores requested index).
5151 * @param indexptr set to point to the requested stream index if there is one
5153 * @return <0 on error
5154 * 0 if st is NOT a matching stream
5155 * >0 if st is a matching stream
5157 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5158 const char *spec, const char **indexptr, AVProgram **p)
5160 int match = 1; /* Stores if the specifier matches so far. */
5162 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5166 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5167 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5168 enum AVMediaType type;
5172 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5173 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5174 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5175 case 'd': type = AVMEDIA_TYPE_DATA; break;
5176 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5177 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5178 default: av_assert0(0);
5180 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5181 return AVERROR(EINVAL);
5183 #if FF_API_LAVF_AVCTX
5184 FF_DISABLE_DEPRECATION_WARNINGS
5185 if (type != st->codecpar->codec_type
5186 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5188 FF_ENABLE_DEPRECATION_WARNINGS
5190 if (type != st->codecpar->codec_type)
5193 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5195 } else if (*spec == 'p' && *(spec + 1) == ':') {
5200 prog_id = strtol(spec, &endptr, 0);
5201 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5202 if (spec == endptr || (*endptr && *endptr++ != ':'))
5203 return AVERROR(EINVAL);
5206 for (i = 0; i < s->nb_programs; i++) {
5207 if (s->programs[i]->id != prog_id)
5210 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5211 if (st->index == s->programs[i]->stream_index[j]) {
5214 *p = s->programs[i];
5223 } else if (*spec == '#' ||
5224 (*spec == 'i' && *(spec + 1) == ':')) {
5227 spec += 1 + (*spec == 'i');
5228 stream_id = strtol(spec, &endptr, 0);
5229 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5230 return AVERROR(EINVAL);
5231 return match && (stream_id == st->id);
5232 } else if (*spec == 'm' && *(spec + 1) == ':') {
5233 AVDictionaryEntry *tag;
5239 val = strchr(spec, ':');
5241 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5243 return AVERROR(ENOMEM);
5245 tag = av_dict_get(st->metadata, key, NULL, 0);
5247 if (!val || !strcmp(tag->value, val + 1))
5256 return match && ret;
5257 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5258 AVCodecParameters *par = st->codecpar;
5259 #if FF_API_LAVF_AVCTX
5260 FF_DISABLE_DEPRECATION_WARNINGS
5261 AVCodecContext *codec = st->codec;
5262 FF_ENABLE_DEPRECATION_WARNINGS
5265 switch (par->codec_type) {
5266 case AVMEDIA_TYPE_AUDIO:
5267 val = par->sample_rate && par->channels;
5268 #if FF_API_LAVF_AVCTX
5269 val = val || (codec->sample_rate && codec->channels);
5271 if (par->format == AV_SAMPLE_FMT_NONE
5272 #if FF_API_LAVF_AVCTX
5273 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5278 case AVMEDIA_TYPE_VIDEO:
5279 val = par->width && par->height;
5280 #if FF_API_LAVF_AVCTX
5281 val = val || (codec->width && codec->height);
5283 if (par->format == AV_PIX_FMT_NONE
5284 #if FF_API_LAVF_AVCTX
5285 && codec->pix_fmt == AV_PIX_FMT_NONE
5290 case AVMEDIA_TYPE_UNKNOWN:
5297 #if FF_API_LAVF_AVCTX
5298 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5300 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5303 return AVERROR(EINVAL);
5311 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5316 const char *indexptr = NULL;
5317 AVProgram *p = NULL;
5320 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5327 index = strtol(indexptr, &endptr, 0);
5328 if (*endptr) { /* We can't have anything after the requested index. */
5329 ret = AVERROR(EINVAL);
5333 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5334 if (spec == indexptr)
5335 return (index == st->index);
5337 /* If we requested a matching stream index, we have to ensure st is that. */
5338 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5339 for (int i = 0; i < nb_streams && index >= 0; i++) {
5340 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5341 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5344 if (ret > 0 && index-- == 0 && st == candidate)
5350 if (ret == AVERROR(EINVAL))
5351 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5355 int ff_generate_avci_extradata(AVStream *st)
5357 static const uint8_t avci100_1080p_extradata[] = {
5359 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5360 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5361 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5362 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5363 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5364 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5365 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5366 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5367 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5369 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5372 static const uint8_t avci100_1080i_extradata[] = {
5374 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5375 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5376 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5377 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5378 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5379 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5380 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5381 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5382 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5383 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5384 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5386 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5389 static const uint8_t avci50_1080p_extradata[] = {
5391 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5392 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5393 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5394 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5395 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5396 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5397 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5398 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5399 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5401 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5404 static const uint8_t avci50_1080i_extradata[] = {
5406 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5407 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5408 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5409 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5410 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5411 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5412 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5413 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5414 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5415 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5416 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5418 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5421 static const uint8_t avci100_720p_extradata[] = {
5423 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5424 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5425 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5426 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5427 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5428 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5429 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5430 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5431 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5432 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5434 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5437 static const uint8_t avci50_720p_extradata[] = {
5439 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5440 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5441 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5442 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5443 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5444 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5445 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5446 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5447 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5449 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5453 const uint8_t *data = NULL;
5456 if (st->codecpar->width == 1920) {
5457 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5458 data = avci100_1080p_extradata;
5459 size = sizeof(avci100_1080p_extradata);
5461 data = avci100_1080i_extradata;
5462 size = sizeof(avci100_1080i_extradata);
5464 } else if (st->codecpar->width == 1440) {
5465 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5466 data = avci50_1080p_extradata;
5467 size = sizeof(avci50_1080p_extradata);
5469 data = avci50_1080i_extradata;
5470 size = sizeof(avci50_1080i_extradata);
5472 } else if (st->codecpar->width == 1280) {
5473 data = avci100_720p_extradata;
5474 size = sizeof(avci100_720p_extradata);
5475 } else if (st->codecpar->width == 960) {
5476 data = avci50_720p_extradata;
5477 size = sizeof(avci50_720p_extradata);
5483 if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0)
5485 memcpy(st->codecpar->extradata, data, size);
5490 uint8_t *av_stream_get_side_data(const AVStream *st,
5491 enum AVPacketSideDataType type, buffer_size_t *size)
5495 for (i = 0; i < st->nb_side_data; i++) {
5496 if (st->side_data[i].type == type) {
5498 *size = st->side_data[i].size;
5499 return st->side_data[i].data;
5507 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5508 uint8_t *data, size_t size)
5510 AVPacketSideData *sd, *tmp;
5513 for (i = 0; i < st->nb_side_data; i++) {
5514 sd = &st->side_data[i];
5516 if (sd->type == type) {
5517 av_freep(&sd->data);
5524 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5525 return AVERROR(ERANGE);
5527 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5529 return AVERROR(ENOMEM);
5532 st->side_data = tmp;
5535 sd = &st->side_data[st->nb_side_data - 1];
5543 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5547 uint8_t *data = av_malloc(size);
5552 ret = av_stream_add_side_data(st, type, data, size);
5561 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5564 const AVBitStreamFilter *bsf;
5567 av_assert0(!st->internal->bsfc);
5569 if (!(bsf = av_bsf_get_by_name(name))) {
5570 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5571 return AVERROR_BSF_NOT_FOUND;
5574 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5577 bsfc->time_base_in = st->time_base;
5578 if ((ret = avcodec_parameters_copy(bsfc->par_in, st->codecpar)) < 0) {
5583 if (args && bsfc->filter->priv_class) {
5584 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5585 const char * shorthand[2] = {NULL};
5588 shorthand[0] = opt->name;
5590 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5596 if ((ret = av_bsf_init(bsfc)) < 0) {
5601 st->internal->bsfc = bsfc;
5603 av_log(NULL, AV_LOG_VERBOSE,
5604 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5605 name, args ? args : "");
5610 FF_DISABLE_DEPRECATION_WARNINGS
5611 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5612 AVBitStreamFilterContext *bsfc)
5616 AVPacket new_pkt = *pkt;
5617 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5618 &new_pkt.data, &new_pkt.size,
5619 pkt->data, pkt->size,
5620 pkt->flags & AV_PKT_FLAG_KEY);
5621 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5622 av_packet_unref(pkt);
5623 memset(pkt, 0, sizeof(*pkt));
5626 if(a == 0 && new_pkt.data != pkt->data) {
5627 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
5629 memcpy(t, new_pkt.data, new_pkt.size);
5630 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5635 a = AVERROR(ENOMEM);
5639 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5640 av_buffer_default_free, NULL, 0);
5642 pkt->side_data = NULL;
5643 pkt->side_data_elems = 0;
5644 av_packet_unref(pkt);
5646 av_freep(&new_pkt.data);
5647 a = AVERROR(ENOMEM);
5651 av_log(codec, AV_LOG_ERROR,
5652 "Failed to open bitstream filter %s for stream %d with codec %s",
5653 bsfc->filter->name, pkt->stream_index,
5654 codec->codec ? codec->codec->name : "copy");
5664 FF_ENABLE_DEPRECATION_WARNINGS
5667 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5670 return AVERROR(EINVAL);
5672 if (!(s->oformat->flags & AVFMT_NOFILE))
5673 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5677 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5680 s->io_close(s, *pb);
5684 int ff_is_http_proto(char *filename) {
5685 const char *proto = avio_find_protocol_name(filename);
5686 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5689 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5691 AVDictionaryEntry *entry;
5692 int64_t parsed_timestamp;
5694 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5695 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5696 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5699 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5706 int ff_standardize_creation_time(AVFormatContext *s)
5709 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5711 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5715 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5720 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5722 if (size != AVPALETTE_SIZE) {
5723 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5724 return AVERROR_INVALIDDATA;
5726 memcpy(palette, side_data, AVPALETTE_SIZE);
5730 if (ret == CONTAINS_PAL) {
5732 for (i = 0; i < AVPALETTE_COUNT; i++)
5733 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5740 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5745 ret = av_bprint_finalize(buf, &str);
5748 if (!av_bprint_is_complete(buf)) {
5750 return AVERROR(ENOMEM);
5753 par->extradata = str;
5754 /* Note: the string is NUL terminated (so extradata can be read as a
5755 * string), but the ending character is not accounted in the size (in
5756 * binary formats you are likely not supposed to mux that character). When
5757 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5759 par->extradata_size = buf->len;
5763 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5764 AVStream *ost, const AVStream *ist,
5765 enum AVTimebaseSource copy_tb)
5767 //TODO: use [io]st->internal->avctx
5768 const AVCodecContext *dec_ctx;
5769 AVCodecContext *enc_ctx;
5771 #if FF_API_LAVF_AVCTX
5772 FF_DISABLE_DEPRECATION_WARNINGS
5773 dec_ctx = ist->codec;
5774 enc_ctx = ost->codec;
5775 FF_ENABLE_DEPRECATION_WARNINGS
5777 dec_ctx = ist->internal->avctx;
5778 enc_ctx = ost->internal->avctx;
5781 enc_ctx->time_base = ist->time_base;
5783 * Avi is a special case here because it supports variable fps but
5784 * having the fps and timebase differe significantly adds quite some
5787 if (!strcmp(ofmt->name, "avi")) {
5788 #if FF_API_R_FRAME_RATE
5789 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5790 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5791 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5792 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5793 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5794 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5795 enc_ctx->time_base.num = ist->r_frame_rate.den;
5796 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5797 enc_ctx->ticks_per_frame = 2;
5800 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5801 && av_q2d(ist->time_base) < 1.0/500
5802 || copy_tb == AVFMT_TBCF_DECODER) {
5803 enc_ctx->time_base = dec_ctx->time_base;
5804 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5805 enc_ctx->time_base.den *= 2;
5806 enc_ctx->ticks_per_frame = 2;
5808 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5809 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5810 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5811 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5812 && av_q2d(ist->time_base) < 1.0/500
5813 || copy_tb == AVFMT_TBCF_DECODER) {
5814 enc_ctx->time_base = dec_ctx->time_base;
5815 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5819 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5820 && dec_ctx->time_base.num < dec_ctx->time_base.den
5821 && dec_ctx->time_base.num > 0
5822 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5823 enc_ctx->time_base = dec_ctx->time_base;
5826 if (ost->avg_frame_rate.num)
5827 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5829 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5830 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5835 AVRational av_stream_get_codec_timebase(const AVStream *st)
5837 // See avformat_transfer_internal_stream_timing_info() TODO.
5838 #if FF_API_LAVF_AVCTX
5839 FF_DISABLE_DEPRECATION_WARNINGS
5840 return st->codec->time_base;
5841 FF_ENABLE_DEPRECATION_WARNINGS
5843 return st->internal->avctx->time_base;
5847 void ff_format_set_url(AVFormatContext *s, char *url)
5852 #if FF_API_FORMAT_FILENAME
5853 FF_DISABLE_DEPRECATION_WARNINGS
5854 av_strlcpy(s->filename, url, sizeof(s->filename));
5855 FF_ENABLE_DEPRECATION_WARNINGS