2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/thread.h"
36 #include "libavutil/time.h"
37 #include "libavutil/time_internal.h"
38 #include "libavutil/timestamp.h"
40 #include "libavcodec/bytestream.h"
41 #include "libavcodec/internal.h"
42 #include "libavcodec/raw.h"
44 #include "audiointerleave.h"
46 #include "avio_internal.h"
56 #include "libavutil/ffversion.h"
57 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
59 static AVMutex avformat_mutex = AV_MUTEX_INITIALIZER;
63 * various utility functions for use within FFmpeg
66 unsigned avformat_version(void)
68 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
69 return LIBAVFORMAT_VERSION_INT;
72 const char *avformat_configuration(void)
74 return FFMPEG_CONFIGURATION;
77 const char *avformat_license(void)
79 #define LICENSE_PREFIX "libavformat license: "
80 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
83 int ff_lock_avformat(void)
85 return ff_mutex_lock(&avformat_mutex) ? -1 : 0;
88 int ff_unlock_avformat(void)
90 return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
93 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
95 static int is_relative(int64_t ts) {
96 return ts > (RELATIVE_TS_BASE - (1LL<<48));
100 * Wrap a given time stamp, if there is an indication for an overflow
103 * @param timestamp the time stamp to wrap
104 * @return resulting time stamp
106 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
108 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
109 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
110 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
111 timestamp < st->pts_wrap_reference)
112 return timestamp + (1ULL << st->pts_wrap_bits);
113 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
114 timestamp >= st->pts_wrap_reference)
115 return timestamp - (1ULL << st->pts_wrap_bits);
120 #if FF_API_FORMAT_GET_SET
121 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
122 #if FF_API_LAVF_FFSERVER
123 FF_DISABLE_DEPRECATION_WARNINGS
124 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
125 FF_ENABLE_DEPRECATION_WARNINGS
127 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
128 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
129 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
130 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
131 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
132 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
133 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
134 #if FF_API_OLD_OPEN_CALLBACKS
135 FF_DISABLE_DEPRECATION_WARNINGS
136 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
137 FF_ENABLE_DEPRECATION_WARNINGS
141 int64_t av_stream_get_end_pts(const AVStream *st)
143 if (st->internal->priv_pts) {
144 return st->internal->priv_pts->val;
146 return AV_NOPTS_VALUE;
149 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
154 void av_format_inject_global_side_data(AVFormatContext *s)
157 s->internal->inject_global_side_data = 1;
158 for (i = 0; i < s->nb_streams; i++) {
159 AVStream *st = s->streams[i];
160 st->inject_global_side_data = 1;
164 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
166 av_assert0(!dst->codec_whitelist &&
167 !dst->format_whitelist &&
168 !dst->protocol_whitelist &&
169 !dst->protocol_blacklist);
170 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
171 dst->format_whitelist = av_strdup(src->format_whitelist);
172 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
173 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
174 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
175 || (src-> format_whitelist && !dst-> format_whitelist)
176 || (src->protocol_whitelist && !dst->protocol_whitelist)
177 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
178 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
179 return AVERROR(ENOMEM);
184 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
186 #if FF_API_LAVF_AVCTX
187 FF_DISABLE_DEPRECATION_WARNINGS
188 if (st->codec->codec)
189 return st->codec->codec;
190 FF_ENABLE_DEPRECATION_WARNINGS
193 switch (st->codecpar->codec_type) {
194 case AVMEDIA_TYPE_VIDEO:
195 if (s->video_codec) return s->video_codec;
197 case AVMEDIA_TYPE_AUDIO:
198 if (s->audio_codec) return s->audio_codec;
200 case AVMEDIA_TYPE_SUBTITLE:
201 if (s->subtitle_codec) return s->subtitle_codec;
205 return avcodec_find_decoder(codec_id);
208 static const AVCodec *find_probe_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
210 const AVCodec *codec;
212 #if CONFIG_H264_DECODER
213 /* Other parts of the code assume this decoder to be used for h264,
214 * so force it if possible. */
215 if (codec_id == AV_CODEC_ID_H264)
216 return avcodec_find_decoder_by_name("h264");
219 codec = find_decoder(s, st, codec_id);
223 if (codec->capabilities & AV_CODEC_CAP_AVOID_PROBING) {
224 const AVCodec *probe_codec = NULL;
225 while (probe_codec = av_codec_next(probe_codec)) {
226 if (probe_codec->id == codec_id &&
227 av_codec_is_decoder(probe_codec) &&
228 !(probe_codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_EXPERIMENTAL))) {
237 #if FF_API_FORMAT_GET_SET
238 int av_format_get_probe_score(const AVFormatContext *s)
240 return s->probe_score;
244 /* an arbitrarily chosen "sane" max packet size -- 50M */
245 #define SANE_CHUNK_SIZE (50000000)
247 int ffio_limit(AVIOContext *s, int size)
249 if (s->maxsize>= 0) {
250 int64_t remaining= s->maxsize - avio_tell(s);
251 if (remaining < size) {
252 int64_t newsize = avio_size(s);
253 if (!s->maxsize || s->maxsize<newsize)
254 s->maxsize = newsize - !newsize;
255 remaining= s->maxsize - avio_tell(s);
256 remaining= FFMAX(remaining, 0);
259 if (s->maxsize>= 0 && remaining+1 < size) {
260 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
267 /* Read the data in sane-sized chunks and append to pkt.
268 * Return the number of bytes read or an error. */
269 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
271 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
272 int orig_size = pkt->size;
276 int prev_size = pkt->size;
279 /* When the caller requests a lot of data, limit it to the amount
280 * left in file or SANE_CHUNK_SIZE when it is not known. */
282 if (read_size > SANE_CHUNK_SIZE/10) {
283 read_size = ffio_limit(s, read_size);
284 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
286 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
289 ret = av_grow_packet(pkt, read_size);
293 ret = avio_read(s, pkt->data + prev_size, read_size);
294 if (ret != read_size) {
295 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
302 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)
315 pkt->pos = avio_tell(s);
317 return append_packet_chunked(s, pkt, size);
320 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
323 return av_get_packet(s, pkt, size);
324 return append_packet_chunked(s, pkt, size);
327 int av_filename_number_test(const char *filename)
331 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
334 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
337 static const struct {
340 enum AVMediaType type;
342 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
343 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
344 { "aptx", AV_CODEC_ID_APTX, AVMEDIA_TYPE_AUDIO },
345 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
346 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
347 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
348 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
349 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
350 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
351 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
352 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
353 { "mjpeg_2000",AV_CODEC_ID_JPEG2000, AVMEDIA_TYPE_VIDEO },
354 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
355 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
356 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
360 const AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
364 av_log(s, AV_LOG_DEBUG,
365 "Probe with size=%d, packets=%d detected %s with score=%d\n",
366 pd->buf_size, s->max_probe_packets - st->probe_packets,
368 for (i = 0; fmt_id_type[i].name; i++) {
369 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
370 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
371 st->codecpar->sample_rate)
373 if (st->request_probe > score &&
374 st->codecpar->codec_id != fmt_id_type[i].id)
376 st->codecpar->codec_id = fmt_id_type[i].id;
377 st->codecpar->codec_type = fmt_id_type[i].type;
378 st->internal->need_context_update = 1;
379 #if FF_API_LAVF_AVCTX
380 FF_DISABLE_DEPRECATION_WARNINGS
381 st->codec->codec_type = st->codecpar->codec_type;
382 st->codec->codec_id = st->codecpar->codec_id;
383 FF_ENABLE_DEPRECATION_WARNINGS
392 /************************************************************/
393 /* input media file */
395 int av_demuxer_open(AVFormatContext *ic) {
398 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
399 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
400 return AVERROR(EINVAL);
403 if (ic->iformat->read_header) {
404 err = ic->iformat->read_header(ic);
409 if (ic->pb && !ic->internal->data_offset)
410 ic->internal->data_offset = avio_tell(ic->pb);
415 /* Open input file and probe the format if necessary. */
416 static int init_input(AVFormatContext *s, const char *filename,
417 AVDictionary **options)
420 AVProbeData pd = { filename, NULL, 0 };
421 int score = AVPROBE_SCORE_RETRY;
424 s->flags |= AVFMT_FLAG_CUSTOM_IO;
426 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
427 s, 0, s->format_probesize);
428 else if (s->iformat->flags & AVFMT_NOFILE)
429 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
430 "will be ignored with AVFMT_NOFILE format.\n");
434 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
435 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
438 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
443 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
444 s, 0, s->format_probesize);
447 int ff_packet_list_put(AVPacketList **packet_buffer,
448 AVPacketList **plast_pktl,
449 AVPacket *pkt, int flags)
451 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
455 return AVERROR(ENOMEM);
457 if (flags & FF_PACKETLIST_FLAG_REF_PACKET) {
458 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
463 ret = av_packet_make_refcounted(pkt);
468 av_packet_move_ref(&pktl->pkt, pkt);
472 (*plast_pktl)->next = pktl;
474 *packet_buffer = pktl;
476 /* Add the packet in the buffered packet list. */
481 int avformat_queue_attached_pictures(AVFormatContext *s)
484 for (i = 0; i < s->nb_streams; i++)
485 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
486 s->streams[i]->discard < AVDISCARD_ALL) {
487 if (s->streams[i]->attached_pic.size <= 0) {
488 av_log(s, AV_LOG_WARNING,
489 "Attached picture on stream %d has invalid size, "
494 ret = ff_packet_list_put(&s->internal->raw_packet_buffer,
495 &s->internal->raw_packet_buffer_end,
496 &s->streams[i]->attached_pic,
497 FF_PACKETLIST_FLAG_REF_PACKET);
504 static int update_stream_avctx(AVFormatContext *s)
507 for (i = 0; i < s->nb_streams; i++) {
508 AVStream *st = s->streams[i];
510 if (!st->internal->need_context_update)
513 /* close parser, because it depends on the codec */
514 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
515 av_parser_close(st->parser);
519 /* update internal codec context, for the parser */
520 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
524 #if FF_API_LAVF_AVCTX
525 FF_DISABLE_DEPRECATION_WARNINGS
526 /* update deprecated public codec context */
527 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
530 FF_ENABLE_DEPRECATION_WARNINGS
533 st->internal->need_context_update = 0;
539 int avformat_open_input(AVFormatContext **ps, const char *filename,
540 ff_const59 AVInputFormat *fmt, AVDictionary **options)
542 AVFormatContext *s = *ps;
544 AVDictionary *tmp = NULL;
545 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
547 if (!s && !(s = avformat_alloc_context()))
548 return AVERROR(ENOMEM);
550 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
551 return AVERROR(EINVAL);
557 av_dict_copy(&tmp, *options, 0);
559 if (s->pb) // must be before any goto fail
560 s->flags |= AVFMT_FLAG_CUSTOM_IO;
562 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
565 if (!(s->url = av_strdup(filename ? filename : ""))) {
566 ret = AVERROR(ENOMEM);
570 #if FF_API_FORMAT_FILENAME
571 FF_DISABLE_DEPRECATION_WARNINGS
572 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
573 FF_ENABLE_DEPRECATION_WARNINGS
575 if ((ret = init_input(s, filename, &tmp)) < 0)
577 s->probe_score = ret;
579 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
580 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
581 if (!s->protocol_whitelist) {
582 ret = AVERROR(ENOMEM);
587 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
588 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
589 if (!s->protocol_blacklist) {
590 ret = AVERROR(ENOMEM);
595 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
596 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
597 ret = AVERROR(EINVAL);
601 avio_skip(s->pb, s->skip_initial_bytes);
603 /* Check filename in case an image number is expected. */
604 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
605 if (!av_filename_number_test(filename)) {
606 ret = AVERROR(EINVAL);
611 s->duration = s->start_time = AV_NOPTS_VALUE;
613 /* Allocate private data. */
614 if (s->iformat->priv_data_size > 0) {
615 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
616 ret = AVERROR(ENOMEM);
619 if (s->iformat->priv_class) {
620 *(const AVClass **) s->priv_data = s->iformat->priv_class;
621 av_opt_set_defaults(s->priv_data);
622 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
627 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
629 ff_id3v2_read_dict(s->pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta);
632 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
633 if ((ret = s->iformat->read_header(s)) < 0)
637 s->metadata = s->internal->id3v2_meta;
638 s->internal->id3v2_meta = NULL;
639 } else if (s->internal->id3v2_meta) {
640 int level = AV_LOG_WARNING;
641 if (s->error_recognition & AV_EF_COMPLIANT)
642 level = AV_LOG_ERROR;
643 av_log(s, level, "Discarding ID3 tags because more suitable tags were found.\n");
644 av_dict_free(&s->internal->id3v2_meta);
645 if (s->error_recognition & AV_EF_EXPLODE)
646 return AVERROR_INVALIDDATA;
649 if (id3v2_extra_meta) {
650 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
651 !strcmp(s->iformat->name, "tta") || !strcmp(s->iformat->name, "wav")) {
652 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
654 if ((ret = ff_id3v2_parse_chapters(s, &id3v2_extra_meta)) < 0)
656 if ((ret = ff_id3v2_parse_priv(s, &id3v2_extra_meta)) < 0)
659 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
661 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
663 if ((ret = avformat_queue_attached_pictures(s)) < 0)
666 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
667 s->internal->data_offset = avio_tell(s->pb);
669 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
671 update_stream_avctx(s);
673 for (i = 0; i < s->nb_streams; i++)
674 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
677 av_dict_free(options);
684 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
686 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
688 avformat_free_context(s);
693 /*******************************************************/
695 static void force_codec_ids(AVFormatContext *s, AVStream *st)
697 switch (st->codecpar->codec_type) {
698 case AVMEDIA_TYPE_VIDEO:
699 if (s->video_codec_id)
700 st->codecpar->codec_id = s->video_codec_id;
702 case AVMEDIA_TYPE_AUDIO:
703 if (s->audio_codec_id)
704 st->codecpar->codec_id = s->audio_codec_id;
706 case AVMEDIA_TYPE_SUBTITLE:
707 if (s->subtitle_codec_id)
708 st->codecpar->codec_id = s->subtitle_codec_id;
710 case AVMEDIA_TYPE_DATA:
711 if (s->data_codec_id)
712 st->codecpar->codec_id = s->data_codec_id;
717 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
719 if (st->request_probe>0) {
720 AVProbeData *pd = &st->probe_data;
722 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
726 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
728 av_log(s, AV_LOG_WARNING,
729 "Failed to reallocate probe buffer for stream %d\n",
734 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
735 pd->buf_size += pkt->size;
736 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
739 st->probe_packets = 0;
741 av_log(s, AV_LOG_WARNING,
742 "nothing to probe for stream %d\n", st->index);
746 end= s->internal->raw_packet_buffer_remaining_size <= 0
747 || st->probe_packets<= 0;
749 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
750 int score = set_codec_from_probe_data(s, st, pd);
751 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
755 st->request_probe = -1;
756 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
757 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
759 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
761 force_codec_ids(s, st);
767 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
769 int64_t ref = pkt->dts;
770 int i, pts_wrap_behavior;
771 int64_t pts_wrap_reference;
772 AVProgram *first_program;
774 if (ref == AV_NOPTS_VALUE)
776 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
778 ref &= (1LL << st->pts_wrap_bits)-1;
780 // reference time stamp should be 60 s before first time stamp
781 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
782 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
783 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
784 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
785 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
787 first_program = av_find_program_from_stream(s, NULL, stream_index);
789 if (!first_program) {
790 int default_stream_index = av_find_default_stream_index(s);
791 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
792 for (i = 0; i < s->nb_streams; i++) {
793 if (av_find_program_from_stream(s, NULL, i))
795 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
796 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
800 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
801 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
805 AVProgram *program = first_program;
807 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
808 pts_wrap_reference = program->pts_wrap_reference;
809 pts_wrap_behavior = program->pts_wrap_behavior;
812 program = av_find_program_from_stream(s, program, stream_index);
815 // update every program with differing pts_wrap_reference
816 program = first_program;
818 if (program->pts_wrap_reference != pts_wrap_reference) {
819 for (i = 0; i<program->nb_stream_indexes; i++) {
820 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
821 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
824 program->pts_wrap_reference = pts_wrap_reference;
825 program->pts_wrap_behavior = pts_wrap_behavior;
827 program = av_find_program_from_stream(s, program, stream_index);
833 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
843 AVPacketList *pktl = s->internal->raw_packet_buffer;
844 const AVPacket *pkt1;
847 st = s->streams[pktl->pkt.stream_index];
848 if (s->internal->raw_packet_buffer_remaining_size <= 0)
849 if ((err = probe_codec(s, st, NULL)) < 0)
851 if (st->request_probe <= 0) {
852 ff_packet_list_get(&s->internal->raw_packet_buffer,
853 &s->internal->raw_packet_buffer_end, pkt);
854 s->internal->raw_packet_buffer_remaining_size += pkt->size;
859 ret = s->iformat->read_packet(s, pkt);
861 av_packet_unref(pkt);
863 /* Some demuxers return FFERROR_REDO when they consume
864 data and discard it (ignored streams, junk, extradata).
865 We must re-call the demuxer to get the real packet. */
866 if (ret == FFERROR_REDO)
868 if (!pktl || ret == AVERROR(EAGAIN))
870 for (i = 0; i < s->nb_streams; i++) {
872 if (st->probe_packets || st->request_probe > 0)
873 if ((err = probe_codec(s, st, NULL)) < 0)
875 av_assert0(st->request_probe <= 0);
880 err = av_packet_make_refcounted(pkt);
882 av_packet_unref(pkt);
886 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
887 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
888 av_log(s, AV_LOG_WARNING,
889 "Dropped corrupted packet (stream = %d)\n",
891 av_packet_unref(pkt);
895 av_assert0(pkt->stream_index < (unsigned)s->nb_streams &&
896 "Invalid stream index.\n");
898 st = s->streams[pkt->stream_index];
900 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
901 // correct first time stamps to negative values
902 if (!is_relative(st->first_dts))
903 st->first_dts = wrap_timestamp(st, st->first_dts);
904 if (!is_relative(st->start_time))
905 st->start_time = wrap_timestamp(st, st->start_time);
906 if (!is_relative(st->cur_dts))
907 st->cur_dts = wrap_timestamp(st, st->cur_dts);
910 pkt->dts = wrap_timestamp(st, pkt->dts);
911 pkt->pts = wrap_timestamp(st, pkt->pts);
913 force_codec_ids(s, st);
915 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
916 if (s->use_wallclock_as_timestamps)
917 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
919 if (!pktl && st->request_probe <= 0)
922 err = ff_packet_list_put(&s->internal->raw_packet_buffer,
923 &s->internal->raw_packet_buffer_end,
926 av_packet_unref(pkt);
929 pkt1 = &s->internal->raw_packet_buffer_end->pkt;
930 s->internal->raw_packet_buffer_remaining_size -= pkt1->size;
932 if ((err = probe_codec(s, st, pkt1)) < 0)
938 /**********************************************************/
940 static int determinable_frame_size(AVCodecContext *avctx)
942 switch(avctx->codec_id) {
943 case AV_CODEC_ID_MP1:
944 case AV_CODEC_ID_MP2:
945 case AV_CODEC_ID_MP3:
946 case AV_CODEC_ID_CODEC2:
954 * Return the frame duration in seconds. Return 0 if not available.
956 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
957 AVCodecParserContext *pc, AVPacket *pkt)
959 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
960 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
961 int frame_size, sample_rate;
963 #if FF_API_LAVF_AVCTX
964 FF_DISABLE_DEPRECATION_WARNINGS
965 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
966 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
967 FF_ENABLE_DEPRECATION_WARNINGS
972 switch (st->codecpar->codec_type) {
973 case AVMEDIA_TYPE_VIDEO:
974 if (st->r_frame_rate.num && !pc && s->iformat) {
975 *pnum = st->r_frame_rate.den;
976 *pden = st->r_frame_rate.num;
977 } else if (st->time_base.num * 1000LL > st->time_base.den) {
978 *pnum = st->time_base.num;
979 *pden = st->time_base.den;
980 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
981 av_assert0(st->internal->avctx->ticks_per_frame);
982 av_reduce(pnum, pden,
984 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
987 if (pc && pc->repeat_pict) {
988 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
989 av_reduce(pnum, pden,
990 (*pnum) * (1LL + pc->repeat_pict),
994 /* If this codec can be interlaced or progressive then we need
995 * a parser to compute duration of a packet. Thus if we have
996 * no parser in such case leave duration undefined. */
997 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
1001 case AVMEDIA_TYPE_AUDIO:
1002 if (st->internal->avctx_inited) {
1003 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
1004 sample_rate = st->internal->avctx->sample_rate;
1006 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
1007 sample_rate = st->codecpar->sample_rate;
1009 if (frame_size <= 0 || sample_rate <= 0)
1012 *pden = sample_rate;
1019 static int is_intra_only(enum AVCodecID id)
1021 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
1024 if ((d->type == AVMEDIA_TYPE_VIDEO || d->type == AVMEDIA_TYPE_AUDIO) &&
1025 !(d->props & AV_CODEC_PROP_INTRA_ONLY))
1030 static int has_decode_delay_been_guessed(AVStream *st)
1032 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1033 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1035 #if CONFIG_H264_DECODER
1036 if (st->internal->avctx->has_b_frames &&
1037 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1040 if (st->internal->avctx->has_b_frames<3)
1041 return st->nb_decoded_frames >= 7;
1042 else if (st->internal->avctx->has_b_frames<4)
1043 return st->nb_decoded_frames >= 18;
1045 return st->nb_decoded_frames >= 20;
1048 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1052 if (pktl == s->internal->packet_buffer_end)
1053 return s->internal->parse_queue;
1057 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1058 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1059 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1062 int delay = st->internal->avctx->has_b_frames;
1065 if (dts == AV_NOPTS_VALUE) {
1066 int64_t best_score = INT64_MAX;
1067 for (i = 0; i<delay; i++) {
1068 if (st->pts_reorder_error_count[i]) {
1069 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1070 if (score < best_score) {
1072 dts = pts_buffer[i];
1077 for (i = 0; i<delay; i++) {
1078 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1079 int64_t diff = FFABS(pts_buffer[i] - dts)
1080 + (uint64_t)st->pts_reorder_error[i];
1081 diff = FFMAX(diff, st->pts_reorder_error[i]);
1082 st->pts_reorder_error[i] = diff;
1083 st->pts_reorder_error_count[i]++;
1084 if (st->pts_reorder_error_count[i] > 250) {
1085 st->pts_reorder_error[i] >>= 1;
1086 st->pts_reorder_error_count[i] >>= 1;
1093 if (dts == AV_NOPTS_VALUE)
1094 dts = pts_buffer[0];
1100 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1101 * of the packets in a window.
1103 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1104 AVPacketList *pkt_buffer)
1106 AVStream *st = s->streams[stream_index];
1107 int delay = st->internal->avctx->has_b_frames;
1110 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1112 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1113 pts_buffer[i] = AV_NOPTS_VALUE;
1115 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1116 if (pkt_buffer->pkt.stream_index != stream_index)
1119 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1120 pts_buffer[0] = pkt_buffer->pkt.pts;
1121 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1122 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1124 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1129 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1130 int64_t dts, int64_t pts, AVPacket *pkt)
1132 AVStream *st = s->streams[stream_index];
1133 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1134 AVPacketList *pktl_it;
1138 if (st->first_dts != AV_NOPTS_VALUE ||
1139 dts == AV_NOPTS_VALUE ||
1140 st->cur_dts == AV_NOPTS_VALUE ||
1141 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1145 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1147 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1149 if (is_relative(pts))
1152 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1153 if (pktl_it->pkt.stream_index != stream_index)
1155 if (is_relative(pktl_it->pkt.pts))
1156 pktl_it->pkt.pts += shift;
1158 if (is_relative(pktl_it->pkt.dts))
1159 pktl_it->pkt.dts += shift;
1161 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1162 st->start_time = pktl_it->pkt.pts;
1163 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1164 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1168 if (has_decode_delay_been_guessed(st)) {
1169 update_dts_from_pts(s, stream_index, pktl);
1172 if (st->start_time == AV_NOPTS_VALUE) {
1173 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1174 st->start_time = pts;
1176 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1177 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1181 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1182 int stream_index, int duration)
1184 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1185 int64_t cur_dts = RELATIVE_TS_BASE;
1187 if (st->first_dts != AV_NOPTS_VALUE) {
1188 if (st->update_initial_durations_done)
1190 st->update_initial_durations_done = 1;
1191 cur_dts = st->first_dts;
1192 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1193 if (pktl->pkt.stream_index == stream_index) {
1194 if (pktl->pkt.pts != pktl->pkt.dts ||
1195 pktl->pkt.dts != AV_NOPTS_VALUE ||
1198 cur_dts -= duration;
1201 if (pktl && pktl->pkt.dts != st->first_dts) {
1202 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1203 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1207 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1210 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1211 st->first_dts = cur_dts;
1212 } else if (st->cur_dts != RELATIVE_TS_BASE)
1215 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1216 if (pktl->pkt.stream_index != stream_index)
1218 if ((pktl->pkt.pts == pktl->pkt.dts ||
1219 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1220 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1221 pktl->pkt.dts == st->first_dts ||
1222 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1223 !pktl->pkt.duration) {
1224 pktl->pkt.dts = cur_dts;
1225 if (!st->internal->avctx->has_b_frames)
1226 pktl->pkt.pts = cur_dts;
1227 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1228 pktl->pkt.duration = duration;
1231 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1234 st->cur_dts = cur_dts;
1237 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1238 AVCodecParserContext *pc, AVPacket *pkt,
1239 int64_t next_dts, int64_t next_pts)
1241 int num, den, presentation_delayed, delay, i;
1243 AVRational duration;
1244 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1245 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1247 if (s->flags & AVFMT_FLAG_NOFILLIN)
1250 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1251 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1252 if (st->last_dts_for_order_check <= pkt->dts) {
1255 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1256 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1258 st->last_dts_for_order_check);
1259 st->dts_misordered++;
1261 if (st->dts_ordered + st->dts_misordered > 250) {
1262 st->dts_ordered >>= 1;
1263 st->dts_misordered >>= 1;
1267 st->last_dts_for_order_check = pkt->dts;
1268 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1269 pkt->dts = AV_NOPTS_VALUE;
1272 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1273 pkt->dts = AV_NOPTS_VALUE;
1275 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1276 && !st->internal->avctx->has_b_frames)
1277 //FIXME Set low_delay = 0 when has_b_frames = 1
1278 st->internal->avctx->has_b_frames = 1;
1280 /* do we have a video B-frame ? */
1281 delay = st->internal->avctx->has_b_frames;
1282 presentation_delayed = 0;
1284 /* XXX: need has_b_frame, but cannot get it if the codec is
1285 * not initialized */
1287 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1288 presentation_delayed = 1;
1290 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1291 st->pts_wrap_bits < 63 &&
1292 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1293 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1294 pkt->dts -= 1LL << st->pts_wrap_bits;
1296 pkt->pts += 1LL << st->pts_wrap_bits;
1299 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1300 * We take the conservative approach and discard both.
1301 * Note: If this is misbehaving for an H.264 file, then possibly
1302 * presentation_delayed is not set correctly. */
1303 if (delay == 1 && pkt->dts == pkt->pts &&
1304 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1305 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1306 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1307 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1308 pkt->dts = AV_NOPTS_VALUE;
1311 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1312 if (pkt->duration <= 0) {
1313 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1315 duration = (AVRational) {num, den};
1316 pkt->duration = av_rescale_rnd(1,
1317 num * (int64_t) st->time_base.den,
1318 den * (int64_t) st->time_base.num,
1323 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1324 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1326 /* Correct timestamps with byte offset if demuxers only have timestamps
1327 * on packet boundaries */
1328 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1329 /* this will estimate bitrate based on this frame's duration and size */
1330 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1331 if (pkt->pts != AV_NOPTS_VALUE)
1333 if (pkt->dts != AV_NOPTS_VALUE)
1337 /* This may be redundant, but it should not hurt. */
1338 if (pkt->dts != AV_NOPTS_VALUE &&
1339 pkt->pts != AV_NOPTS_VALUE &&
1340 pkt->pts > pkt->dts)
1341 presentation_delayed = 1;
1343 if (s->debug & FF_FDEBUG_TS)
1344 av_log(s, AV_LOG_DEBUG,
1345 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1346 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1347 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1349 /* Interpolate PTS and DTS if they are not present. We skip H264
1350 * currently because delay and has_b_frames are not reliably set. */
1351 if ((delay == 0 || (delay == 1 && pc)) &&
1353 if (presentation_delayed) {
1354 /* DTS = decompression timestamp */
1355 /* PTS = presentation timestamp */
1356 if (pkt->dts == AV_NOPTS_VALUE)
1357 pkt->dts = st->last_IP_pts;
1358 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1359 if (pkt->dts == AV_NOPTS_VALUE)
1360 pkt->dts = st->cur_dts;
1362 /* This is tricky: the dts must be incremented by the duration
1363 * of the frame we are displaying, i.e. the last I- or P-frame. */
1364 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1365 st->last_IP_duration = pkt->duration;
1366 if (pkt->dts != AV_NOPTS_VALUE)
1367 st->cur_dts = pkt->dts + st->last_IP_duration;
1368 if (pkt->dts != AV_NOPTS_VALUE &&
1369 pkt->pts == AV_NOPTS_VALUE &&
1370 st->last_IP_duration > 0 &&
1371 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1372 next_dts != next_pts &&
1373 next_pts != AV_NOPTS_VALUE)
1374 pkt->pts = next_dts;
1376 if ((uint64_t)pkt->duration <= INT32_MAX)
1377 st->last_IP_duration = pkt->duration;
1378 st->last_IP_pts = pkt->pts;
1379 /* Cannot compute PTS if not present (we can compute it only
1380 * by knowing the future. */
1381 } else if (pkt->pts != AV_NOPTS_VALUE ||
1382 pkt->dts != AV_NOPTS_VALUE ||
1383 pkt->duration > 0 ) {
1385 /* presentation is not delayed : PTS and DTS are the same */
1386 if (pkt->pts == AV_NOPTS_VALUE)
1387 pkt->pts = pkt->dts;
1388 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1390 if (pkt->pts == AV_NOPTS_VALUE)
1391 pkt->pts = st->cur_dts;
1392 pkt->dts = pkt->pts;
1393 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1394 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1398 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1399 st->pts_buffer[0] = pkt->pts;
1400 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1401 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1403 if(has_decode_delay_been_guessed(st))
1404 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1406 // We skipped it above so we try here.
1408 // This should happen on the first packet
1409 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1410 if (pkt->dts > st->cur_dts)
1411 st->cur_dts = pkt->dts;
1413 if (s->debug & FF_FDEBUG_TS)
1414 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1415 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1418 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1419 pkt->flags |= AV_PKT_FLAG_KEY;
1420 #if FF_API_CONVERGENCE_DURATION
1421 FF_DISABLE_DEPRECATION_WARNINGS
1423 pkt->convergence_duration = pc->convergence_duration;
1424 FF_ENABLE_DEPRECATION_WARNINGS
1428 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1430 AVPacketList *tmp = *pkt_buf;
1433 AVPacketList *pktl = tmp;
1435 av_packet_unref(&pktl->pkt);
1439 *pkt_buf_end = NULL;
1443 * Parse a packet, add all split parts to parse_queue.
1445 * @param pkt Packet to parse; must not be NULL.
1446 * @param flush Indicates whether to flush. If set, pkt must be blank.
1448 static int parse_packet(AVFormatContext *s, AVPacket *pkt,
1449 int stream_index, int flush)
1452 AVStream *st = s->streams[stream_index];
1453 uint8_t *data = pkt->data;
1454 int size = pkt->size;
1455 int ret = 0, got_output = flush;
1457 if (size || flush) {
1458 av_init_packet(&out_pkt);
1459 } else if (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1460 // preserve 0-size sync packets
1461 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1464 while (size > 0 || (flush && got_output)) {
1466 int64_t next_pts = pkt->pts;
1467 int64_t next_dts = pkt->dts;
1469 len = av_parser_parse2(st->parser, st->internal->avctx,
1470 &out_pkt.data, &out_pkt.size, data, size,
1471 pkt->pts, pkt->dts, pkt->pos);
1473 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1475 /* increment read pointer */
1479 got_output = !!out_pkt.size;
1484 if (pkt->buf && out_pkt.data == pkt->data) {
1485 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1486 * to data in it and not in the parser's internal buffer. */
1487 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1488 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1489 out_pkt.buf = av_buffer_ref(pkt->buf);
1491 ret = AVERROR(ENOMEM);
1495 ret = av_packet_make_refcounted(&out_pkt);
1500 if (pkt->side_data) {
1501 out_pkt.side_data = pkt->side_data;
1502 out_pkt.side_data_elems = pkt->side_data_elems;
1503 pkt->side_data = NULL;
1504 pkt->side_data_elems = 0;
1507 /* set the duration */
1508 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1509 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1510 if (st->internal->avctx->sample_rate > 0) {
1512 av_rescale_q_rnd(st->parser->duration,
1513 (AVRational) { 1, st->internal->avctx->sample_rate },
1519 out_pkt.stream_index = st->index;
1520 out_pkt.pts = st->parser->pts;
1521 out_pkt.dts = st->parser->dts;
1522 out_pkt.pos = st->parser->pos;
1523 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1525 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1526 out_pkt.pos = st->parser->frame_offset;
1528 if (st->parser->key_frame == 1 ||
1529 (st->parser->key_frame == -1 &&
1530 st->parser->pict_type == AV_PICTURE_TYPE_I))
1531 out_pkt.flags |= AV_PKT_FLAG_KEY;
1533 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1534 out_pkt.flags |= AV_PKT_FLAG_KEY;
1536 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1538 ret = ff_packet_list_put(&s->internal->parse_queue,
1539 &s->internal->parse_queue_end,
1542 av_packet_unref(&out_pkt);
1547 /* end of the stream => close and free the parser */
1549 av_parser_close(st->parser);
1554 av_packet_unref(pkt);
1558 int ff_packet_list_get(AVPacketList **pkt_buffer,
1559 AVPacketList **pkt_buffer_end,
1563 av_assert0(*pkt_buffer);
1566 *pkt_buffer = pktl->next;
1568 *pkt_buffer_end = NULL;
1573 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1575 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1578 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1580 int ret, i, got_packet = 0;
1581 AVDictionary *metadata = NULL;
1583 while (!got_packet && !s->internal->parse_queue) {
1586 /* read next packet */
1587 ret = ff_read_packet(s, pkt);
1589 if (ret == AVERROR(EAGAIN))
1591 /* flush the parsers */
1592 for (i = 0; i < s->nb_streams; i++) {
1594 if (st->parser && st->need_parsing)
1595 parse_packet(s, pkt, st->index, 1);
1597 /* all remaining packets are now in parse_queue =>
1598 * really terminate parsing */
1602 st = s->streams[pkt->stream_index];
1604 /* update context if required */
1605 if (st->internal->need_context_update) {
1606 if (avcodec_is_open(st->internal->avctx)) {
1607 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1608 avcodec_close(st->internal->avctx);
1609 st->info->found_decoder = 0;
1612 /* close parser, because it depends on the codec */
1613 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1614 av_parser_close(st->parser);
1618 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1620 av_packet_unref(pkt);
1624 #if FF_API_LAVF_AVCTX
1625 FF_DISABLE_DEPRECATION_WARNINGS
1626 /* update deprecated public codec context */
1627 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1629 av_packet_unref(pkt);
1632 FF_ENABLE_DEPRECATION_WARNINGS
1635 st->internal->need_context_update = 0;
1638 if (pkt->pts != AV_NOPTS_VALUE &&
1639 pkt->dts != AV_NOPTS_VALUE &&
1640 pkt->pts < pkt->dts) {
1641 av_log(s, AV_LOG_WARNING,
1642 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1644 av_ts2str(pkt->pts),
1645 av_ts2str(pkt->dts),
1648 if (s->debug & FF_FDEBUG_TS)
1649 av_log(s, AV_LOG_DEBUG,
1650 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1652 av_ts2str(pkt->pts),
1653 av_ts2str(pkt->dts),
1654 pkt->size, pkt->duration, pkt->flags);
1656 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1657 st->parser = av_parser_init(st->codecpar->codec_id);
1659 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1660 "%s, packets or times may be invalid.\n",
1661 avcodec_get_name(st->codecpar->codec_id));
1662 /* no parser available: just output the raw packets */
1663 st->need_parsing = AVSTREAM_PARSE_NONE;
1664 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1665 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1666 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1667 st->parser->flags |= PARSER_FLAG_ONCE;
1668 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1669 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1672 if (!st->need_parsing || !st->parser) {
1673 /* no parsing needed: we just output the packet as is */
1674 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1675 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1676 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1677 ff_reduce_index(s, st->index);
1678 av_add_index_entry(st, pkt->pos, pkt->dts,
1679 0, 0, AVINDEX_KEYFRAME);
1682 } else if (st->discard < AVDISCARD_ALL) {
1683 if ((ret = parse_packet(s, pkt, pkt->stream_index, 0)) < 0)
1685 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1686 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1687 st->codecpar->channels = st->internal->avctx->channels;
1688 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1689 st->codecpar->codec_id = st->internal->avctx->codec_id;
1692 av_packet_unref(pkt);
1694 if (pkt->flags & AV_PKT_FLAG_KEY)
1695 st->skip_to_keyframe = 0;
1696 if (st->skip_to_keyframe) {
1697 av_packet_unref(pkt);
1702 if (!got_packet && s->internal->parse_queue)
1703 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1706 AVStream *st = s->streams[pkt->stream_index];
1707 int discard_padding = 0;
1708 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1709 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1710 int64_t sample = ts_to_samples(st, pts);
1711 int duration = ts_to_samples(st, pkt->duration);
1712 int64_t end_sample = sample + duration;
1713 if (duration > 0 && end_sample >= st->first_discard_sample &&
1714 sample < st->last_discard_sample)
1715 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1717 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1718 st->skip_samples = st->start_skip_samples;
1719 if (st->skip_samples || discard_padding) {
1720 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1722 AV_WL32(p, st->skip_samples);
1723 AV_WL32(p + 4, discard_padding);
1724 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1726 st->skip_samples = 0;
1729 if (st->inject_global_side_data) {
1730 for (i = 0; i < st->nb_side_data; i++) {
1731 AVPacketSideData *src_sd = &st->side_data[i];
1734 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1737 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1739 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1743 memcpy(dst_data, src_sd->data, src_sd->size);
1745 st->inject_global_side_data = 0;
1749 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1751 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1752 av_dict_copy(&s->metadata, metadata, 0);
1753 av_dict_free(&metadata);
1754 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1757 #if FF_API_LAVF_AVCTX
1758 update_stream_avctx(s);
1761 if (s->debug & FF_FDEBUG_TS)
1762 av_log(s, AV_LOG_DEBUG,
1763 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1764 "size=%d, duration=%"PRId64", flags=%d\n",
1766 av_ts2str(pkt->pts),
1767 av_ts2str(pkt->dts),
1768 pkt->size, pkt->duration, pkt->flags);
1770 /* A demuxer might have returned EOF because of an IO error, let's
1771 * propagate this back to the user. */
1772 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1778 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1780 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1786 ret = s->internal->packet_buffer
1787 ? ff_packet_list_get(&s->internal->packet_buffer,
1788 &s->internal->packet_buffer_end, pkt)
1789 : read_frame_internal(s, pkt);
1796 AVPacketList *pktl = s->internal->packet_buffer;
1799 AVPacket *next_pkt = &pktl->pkt;
1801 if (next_pkt->dts != AV_NOPTS_VALUE) {
1802 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1803 // last dts seen for this stream. if any of packets following
1804 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1805 int64_t last_dts = next_pkt->dts;
1806 av_assert2(wrap_bits <= 64);
1807 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1808 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1809 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1810 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1812 next_pkt->pts = pktl->pkt.dts;
1814 if (last_dts != AV_NOPTS_VALUE) {
1815 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1816 last_dts = pktl->pkt.dts;
1821 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1822 // Fixing the last reference frame had none pts issue (For MXF etc).
1823 // We only do this when
1825 // 2. we are not able to resolve a pts value for current packet.
1826 // 3. the packets for this stream at the end of the files had valid dts.
1827 next_pkt->pts = last_dts + next_pkt->duration;
1829 pktl = s->internal->packet_buffer;
1832 /* read packet from packet buffer, if there is data */
1833 st = s->streams[next_pkt->stream_index];
1834 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1835 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1836 ret = ff_packet_list_get(&s->internal->packet_buffer,
1837 &s->internal->packet_buffer_end, pkt);
1842 ret = read_frame_internal(s, pkt);
1844 if (pktl && ret != AVERROR(EAGAIN)) {
1851 ret = ff_packet_list_put(&s->internal->packet_buffer,
1852 &s->internal->packet_buffer_end,
1855 av_packet_unref(pkt);
1862 st = s->streams[pkt->stream_index];
1863 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1864 ff_reduce_index(s, st->index);
1865 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1868 if (is_relative(pkt->dts))
1869 pkt->dts -= RELATIVE_TS_BASE;
1870 if (is_relative(pkt->pts))
1871 pkt->pts -= RELATIVE_TS_BASE;
1876 /* XXX: suppress the packet queue */
1877 static void flush_packet_queue(AVFormatContext *s)
1881 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1882 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1883 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1885 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1888 /*******************************************************/
1891 int av_find_default_stream_index(AVFormatContext *s)
1895 int best_stream = 0;
1896 int best_score = INT_MIN;
1898 if (s->nb_streams <= 0)
1900 for (i = 0; i < s->nb_streams; i++) {
1903 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1904 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1906 if (st->codecpar->width && st->codecpar->height)
1910 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1911 if (st->codecpar->sample_rate)
1914 if (st->codec_info_nb_frames)
1917 if (st->discard != AVDISCARD_ALL)
1920 if (score > best_score) {
1928 /** Flush the frame reader. */
1929 void ff_read_frame_flush(AVFormatContext *s)
1934 flush_packet_queue(s);
1936 /* Reset read state for each stream. */
1937 for (i = 0; i < s->nb_streams; i++) {
1941 av_parser_close(st->parser);
1944 st->last_IP_pts = AV_NOPTS_VALUE;
1945 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1946 if (st->first_dts == AV_NOPTS_VALUE)
1947 st->cur_dts = RELATIVE_TS_BASE;
1949 /* We set the current DTS to an unspecified origin. */
1950 st->cur_dts = AV_NOPTS_VALUE;
1952 st->probe_packets = s->max_probe_packets;
1954 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1955 st->pts_buffer[j] = AV_NOPTS_VALUE;
1957 if (s->internal->inject_global_side_data)
1958 st->inject_global_side_data = 1;
1960 st->skip_samples = 0;
1964 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1968 for (i = 0; i < s->nb_streams; i++) {
1969 AVStream *st = s->streams[i];
1972 av_rescale(timestamp,
1973 st->time_base.den * (int64_t) ref_st->time_base.num,
1974 st->time_base.num * (int64_t) ref_st->time_base.den);
1978 void ff_reduce_index(AVFormatContext *s, int stream_index)
1980 AVStream *st = s->streams[stream_index];
1981 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1983 if ((unsigned) st->nb_index_entries >= max_entries) {
1985 for (i = 0; 2 * i < st->nb_index_entries; i++)
1986 st->index_entries[i] = st->index_entries[2 * i];
1987 st->nb_index_entries = i;
1991 int ff_add_index_entry(AVIndexEntry **index_entries,
1992 int *nb_index_entries,
1993 unsigned int *index_entries_allocated_size,
1994 int64_t pos, int64_t timestamp,
1995 int size, int distance, int flags)
1997 AVIndexEntry *entries, *ie;
2000 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
2003 if (timestamp == AV_NOPTS_VALUE)
2004 return AVERROR(EINVAL);
2006 if (size < 0 || size > 0x3FFFFFFF)
2007 return AVERROR(EINVAL);
2009 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2010 timestamp -= RELATIVE_TS_BASE;
2012 entries = av_fast_realloc(*index_entries,
2013 index_entries_allocated_size,
2014 (*nb_index_entries + 1) *
2015 sizeof(AVIndexEntry));
2019 *index_entries = entries;
2021 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2022 timestamp, AVSEEK_FLAG_ANY);
2025 index = (*nb_index_entries)++;
2026 ie = &entries[index];
2027 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2029 ie = &entries[index];
2030 if (ie->timestamp != timestamp) {
2031 if (ie->timestamp <= timestamp)
2033 memmove(entries + index + 1, entries + index,
2034 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2035 (*nb_index_entries)++;
2036 } else if (ie->pos == pos && distance < ie->min_distance)
2037 // do not reduce the distance
2038 distance = ie->min_distance;
2042 ie->timestamp = timestamp;
2043 ie->min_distance = distance;
2050 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2051 int size, int distance, int flags)
2053 timestamp = wrap_timestamp(st, timestamp);
2054 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2055 &st->index_entries_allocated_size, pos,
2056 timestamp, size, distance, flags);
2059 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2060 int64_t wanted_timestamp, int flags)
2068 // Optimize appending index entries at the end.
2069 if (b && entries[b - 1].timestamp < wanted_timestamp)
2075 // Search for the next non-discarded packet.
2076 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2078 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2084 timestamp = entries[m].timestamp;
2085 if (timestamp >= wanted_timestamp)
2087 if (timestamp <= wanted_timestamp)
2090 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2092 if (!(flags & AVSEEK_FLAG_ANY))
2093 while (m >= 0 && m < nb_entries &&
2094 !(entries[m].flags & AVINDEX_KEYFRAME))
2095 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2097 if (m == nb_entries)
2102 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2105 int64_t pos_delta = 0;
2107 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2108 const char *proto = avio_find_protocol_name(s->url);
2111 av_log(s, AV_LOG_INFO,
2112 "Protocol name not provided, cannot determine if input is local or "
2113 "a network protocol, buffers and access patterns cannot be configured "
2114 "optimally without knowing the protocol\n");
2117 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2120 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2121 AVStream *st1 = s->streams[ist1];
2122 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2123 AVStream *st2 = s->streams[ist2];
2129 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2130 AVIndexEntry *e1 = &st1->index_entries[i1];
2131 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2133 skip = FFMAX(skip, e1->size);
2134 for (; i2 < st2->nb_index_entries; i2++) {
2135 AVIndexEntry *e2 = &st2->index_entries[i2];
2136 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2137 if (e2_pts - e1_pts < time_tolerance)
2139 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2147 /* XXX This could be adjusted depending on protocol*/
2148 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2149 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2151 /* realloc the buffer and the original data will be retained */
2152 if (ffio_realloc_buf(s->pb, pos_delta)) {
2153 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2157 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2160 if (skip < (1<<23)) {
2161 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2165 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2167 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2168 wanted_timestamp, flags);
2171 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2172 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2174 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2175 if (stream_index >= 0)
2176 ts = wrap_timestamp(s->streams[stream_index], ts);
2180 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2181 int64_t target_ts, int flags)
2183 const AVInputFormat *avif = s->iformat;
2184 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2185 int64_t ts_min, ts_max, ts;
2190 if (stream_index < 0)
2193 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2196 ts_min = AV_NOPTS_VALUE;
2197 pos_limit = -1; // GCC falsely says it may be uninitialized.
2199 st = s->streams[stream_index];
2200 if (st->index_entries) {
2203 /* FIXME: Whole function must be checked for non-keyframe entries in
2204 * index case, especially read_timestamp(). */
2205 index = av_index_search_timestamp(st, target_ts,
2206 flags | AVSEEK_FLAG_BACKWARD);
2207 index = FFMAX(index, 0);
2208 e = &st->index_entries[index];
2210 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2212 ts_min = e->timestamp;
2213 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2214 pos_min, av_ts2str(ts_min));
2216 av_assert1(index == 0);
2219 index = av_index_search_timestamp(st, target_ts,
2220 flags & ~AVSEEK_FLAG_BACKWARD);
2221 av_assert0(index < st->nb_index_entries);
2223 e = &st->index_entries[index];
2224 av_assert1(e->timestamp >= target_ts);
2226 ts_max = e->timestamp;
2227 pos_limit = pos_max - e->min_distance;
2228 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2229 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2233 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2234 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2239 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2242 ff_read_frame_flush(s);
2243 ff_update_cur_dts(s, st, ts);
2248 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2249 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2251 int64_t step = 1024;
2252 int64_t limit, ts_max;
2253 int64_t filesize = avio_size(s->pb);
2254 int64_t pos_max = filesize - 1;
2257 pos_max = FFMAX(0, (pos_max) - step);
2258 ts_max = ff_read_timestamp(s, stream_index,
2259 &pos_max, limit, read_timestamp);
2261 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2262 if (ts_max == AV_NOPTS_VALUE)
2266 int64_t tmp_pos = pos_max + 1;
2267 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2268 &tmp_pos, INT64_MAX, read_timestamp);
2269 if (tmp_ts == AV_NOPTS_VALUE)
2271 av_assert0(tmp_pos > pos_max);
2274 if (tmp_pos >= filesize)
2286 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2287 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2288 int64_t ts_min, int64_t ts_max,
2289 int flags, int64_t *ts_ret,
2290 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2291 int64_t *, int64_t))
2298 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2300 if (ts_min == AV_NOPTS_VALUE) {
2301 pos_min = s->internal->data_offset;
2302 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2303 if (ts_min == AV_NOPTS_VALUE)
2307 if (ts_min >= target_ts) {
2312 if (ts_max == AV_NOPTS_VALUE) {
2313 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2315 pos_limit = pos_max;
2318 if (ts_max <= target_ts) {
2323 av_assert0(ts_min < ts_max);
2326 while (pos_min < pos_limit) {
2327 av_log(s, AV_LOG_TRACE,
2328 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2329 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2330 av_assert0(pos_limit <= pos_max);
2332 if (no_change == 0) {
2333 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2334 // interpolate position (better than dichotomy)
2335 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2337 pos_min - approximate_keyframe_distance;
2338 } else if (no_change == 1) {
2339 // bisection if interpolation did not change min / max pos last time
2340 pos = (pos_min + pos_limit) >> 1;
2342 /* linear search if bisection failed, can only happen if there
2343 * are very few or no keyframes between min/max */
2348 else if (pos > pos_limit)
2352 // May pass pos_limit instead of -1.
2353 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2358 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2359 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2360 pos_min, pos, pos_max,
2361 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2362 pos_limit, start_pos, no_change);
2363 if (ts == AV_NOPTS_VALUE) {
2364 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2367 if (target_ts <= ts) {
2368 pos_limit = start_pos - 1;
2372 if (target_ts >= ts) {
2378 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2379 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2382 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2384 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2385 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2386 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2392 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2393 int64_t pos, int flags)
2395 int64_t pos_min, pos_max;
2397 pos_min = s->internal->data_offset;
2398 pos_max = avio_size(s->pb) - 1;
2402 else if (pos > pos_max)
2405 avio_seek(s->pb, pos, SEEK_SET);
2407 s->io_repositioned = 1;
2412 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2413 int64_t timestamp, int flags)
2420 st = s->streams[stream_index];
2422 index = av_index_search_timestamp(st, timestamp, flags);
2424 if (index < 0 && st->nb_index_entries &&
2425 timestamp < st->index_entries[0].timestamp)
2428 if (index < 0 || index == st->nb_index_entries - 1) {
2432 if (st->nb_index_entries) {
2433 av_assert0(st->index_entries);
2434 ie = &st->index_entries[st->nb_index_entries - 1];
2435 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2437 ff_update_cur_dts(s, st, ie->timestamp);
2439 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2445 read_status = av_read_frame(s, &pkt);
2446 } while (read_status == AVERROR(EAGAIN));
2447 if (read_status < 0)
2449 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2450 if (pkt.flags & AV_PKT_FLAG_KEY) {
2451 av_packet_unref(&pkt);
2454 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2455 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);
2456 av_packet_unref(&pkt);
2460 av_packet_unref(&pkt);
2462 index = av_index_search_timestamp(st, timestamp, flags);
2467 ff_read_frame_flush(s);
2468 if (s->iformat->read_seek)
2469 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2471 ie = &st->index_entries[index];
2472 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2474 ff_update_cur_dts(s, st, ie->timestamp);
2479 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2480 int64_t timestamp, int flags)
2485 if (flags & AVSEEK_FLAG_BYTE) {
2486 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2488 ff_read_frame_flush(s);
2489 return seek_frame_byte(s, stream_index, timestamp, flags);
2492 if (stream_index < 0) {
2493 stream_index = av_find_default_stream_index(s);
2494 if (stream_index < 0)
2497 st = s->streams[stream_index];
2498 /* timestamp for default must be expressed in AV_TIME_BASE units */
2499 timestamp = av_rescale(timestamp, st->time_base.den,
2500 AV_TIME_BASE * (int64_t) st->time_base.num);
2503 /* first, we try the format specific seek */
2504 if (s->iformat->read_seek) {
2505 ff_read_frame_flush(s);
2506 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2512 if (s->iformat->read_timestamp &&
2513 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2514 ff_read_frame_flush(s);
2515 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2516 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2517 ff_read_frame_flush(s);
2518 return seek_frame_generic(s, stream_index, timestamp, flags);
2523 int av_seek_frame(AVFormatContext *s, int stream_index,
2524 int64_t timestamp, int flags)
2528 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2529 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2530 if ((flags & AVSEEK_FLAG_BACKWARD))
2534 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2535 flags & ~AVSEEK_FLAG_BACKWARD);
2538 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2541 ret = avformat_queue_attached_pictures(s);
2546 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2547 int64_t ts, int64_t max_ts, int flags)
2549 if (min_ts > ts || max_ts < ts)
2551 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2552 return AVERROR(EINVAL);
2555 flags |= AVSEEK_FLAG_ANY;
2556 flags &= ~AVSEEK_FLAG_BACKWARD;
2558 if (s->iformat->read_seek2) {
2560 ff_read_frame_flush(s);
2562 if (stream_index == -1 && s->nb_streams == 1) {
2563 AVRational time_base = s->streams[0]->time_base;
2564 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2565 min_ts = av_rescale_rnd(min_ts, time_base.den,
2566 time_base.num * (int64_t)AV_TIME_BASE,
2567 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2568 max_ts = av_rescale_rnd(max_ts, time_base.den,
2569 time_base.num * (int64_t)AV_TIME_BASE,
2570 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2574 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2578 ret = avformat_queue_attached_pictures(s);
2582 if (s->iformat->read_timestamp) {
2583 // try to seek via read_timestamp()
2586 // Fall back on old API if new is not implemented but old is.
2587 // Note the old API has somewhat different semantics.
2588 if (s->iformat->read_seek || 1) {
2589 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2590 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2591 if (ret<0 && ts != min_ts && max_ts != ts) {
2592 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2594 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2599 // try some generic seek like seek_frame_generic() but with new ts semantics
2600 return -1; //unreachable
2603 int avformat_flush(AVFormatContext *s)
2605 ff_read_frame_flush(s);
2609 /*******************************************************/
2612 * Return TRUE if the stream has accurate duration in any stream.
2614 * @return TRUE if the stream has accurate duration for at least one component.
2616 static int has_duration(AVFormatContext *ic)
2621 for (i = 0; i < ic->nb_streams; i++) {
2622 st = ic->streams[i];
2623 if (st->duration != AV_NOPTS_VALUE)
2626 if (ic->duration != AV_NOPTS_VALUE)
2632 * Estimate the stream timings from the one of each components.
2634 * Also computes the global bitrate if possible.
2636 static void update_stream_timings(AVFormatContext *ic)
2638 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2639 int64_t duration, duration1, duration_text, filesize;
2643 start_time = INT64_MAX;
2644 start_time_text = INT64_MAX;
2645 end_time = INT64_MIN;
2646 end_time_text = INT64_MIN;
2647 duration = INT64_MIN;
2648 duration_text = INT64_MIN;
2650 for (i = 0; i < ic->nb_streams; i++) {
2651 AVStream *st = ic->streams[i];
2652 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2653 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2654 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2655 start_time1 = av_rescale_q(st->start_time, st->time_base,
2658 start_time_text = FFMIN(start_time_text, start_time1);
2660 start_time = FFMIN(start_time, start_time1);
2661 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2663 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2664 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2665 end_time1 += start_time1;
2667 end_time_text = FFMAX(end_time_text, end_time1);
2669 end_time = FFMAX(end_time, end_time1);
2671 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2672 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2673 p->start_time = start_time1;
2674 if (p->end_time < end_time1)
2675 p->end_time = end_time1;
2678 if (st->duration != AV_NOPTS_VALUE) {
2679 duration1 = av_rescale_q(st->duration, st->time_base,
2682 duration_text = FFMAX(duration_text, duration1);
2684 duration = FFMAX(duration, duration1);
2687 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2688 start_time = start_time_text;
2689 else if (start_time > start_time_text)
2690 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2692 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2693 end_time = end_time_text;
2694 else if (end_time < end_time_text)
2695 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2697 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2698 duration = duration_text;
2699 else if (duration < duration_text)
2700 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2702 if (start_time != INT64_MAX) {
2703 ic->start_time = start_time;
2704 if (end_time != INT64_MIN) {
2705 if (ic->nb_programs > 1) {
2706 for (i = 0; i < ic->nb_programs; i++) {
2707 p = ic->programs[i];
2708 if (p->start_time != AV_NOPTS_VALUE &&
2709 p->end_time > p->start_time &&
2710 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2711 duration = FFMAX(duration, p->end_time - p->start_time);
2713 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2714 duration = FFMAX(duration, end_time - start_time);
2718 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2719 ic->duration = duration;
2721 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2722 /* compute the bitrate */
2723 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2724 (double) ic->duration;
2725 if (bitrate >= 0 && bitrate <= INT64_MAX)
2726 ic->bit_rate = bitrate;
2730 static void fill_all_stream_timings(AVFormatContext *ic)
2735 update_stream_timings(ic);
2736 for (i = 0; i < ic->nb_streams; i++) {
2737 st = ic->streams[i];
2738 if (st->start_time == AV_NOPTS_VALUE) {
2739 if (ic->start_time != AV_NOPTS_VALUE)
2740 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2742 if (ic->duration != AV_NOPTS_VALUE)
2743 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2749 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2751 int64_t filesize, duration;
2752 int i, show_warning = 0;
2755 /* if bit_rate is already set, we believe it */
2756 if (ic->bit_rate <= 0) {
2757 int64_t bit_rate = 0;
2758 for (i = 0; i < ic->nb_streams; i++) {
2759 st = ic->streams[i];
2760 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2761 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2762 if (st->codecpar->bit_rate > 0) {
2763 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2767 bit_rate += st->codecpar->bit_rate;
2768 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2769 // If we have a videostream with packets but without a bitrate
2770 // then consider the sum not known
2775 ic->bit_rate = bit_rate;
2778 /* if duration is already set, we believe it */
2779 if (ic->duration == AV_NOPTS_VALUE &&
2780 ic->bit_rate != 0) {
2781 filesize = ic->pb ? avio_size(ic->pb) : 0;
2782 if (filesize > ic->internal->data_offset) {
2783 filesize -= ic->internal->data_offset;
2784 for (i = 0; i < ic->nb_streams; i++) {
2785 st = ic->streams[i];
2786 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2787 && st->duration == AV_NOPTS_VALUE) {
2788 duration = av_rescale(8 * filesize, st->time_base.den,
2790 (int64_t) st->time_base.num);
2791 st->duration = duration;
2798 av_log(ic, AV_LOG_WARNING,
2799 "Estimating duration from bitrate, this may be inaccurate\n");
2802 #define DURATION_MAX_READ_SIZE 250000LL
2803 #define DURATION_MAX_RETRY 6
2805 /* only usable for MPEG-PS streams */
2806 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2808 AVPacket pkt1, *pkt = &pkt1;
2810 int num, den, read_size, i, ret;
2811 int found_duration = 0;
2813 int64_t filesize, offset, duration;
2816 /* flush packet queue */
2817 flush_packet_queue(ic);
2819 for (i = 0; i < ic->nb_streams; i++) {
2820 st = ic->streams[i];
2821 if (st->start_time == AV_NOPTS_VALUE &&
2822 st->first_dts == AV_NOPTS_VALUE &&
2823 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2824 av_log(ic, AV_LOG_WARNING,
2825 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2828 av_parser_close(st->parser);
2833 if (ic->skip_estimate_duration_from_pts) {
2834 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2835 goto skip_duration_calc;
2838 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2839 /* estimate the end time (duration) */
2840 /* XXX: may need to support wrapping */
2841 filesize = ic->pb ? avio_size(ic->pb) : 0;
2843 is_end = found_duration;
2844 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2848 avio_seek(ic->pb, offset, SEEK_SET);
2851 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2855 ret = ff_read_packet(ic, pkt);
2856 } while (ret == AVERROR(EAGAIN));
2859 read_size += pkt->size;
2860 st = ic->streams[pkt->stream_index];
2861 if (pkt->pts != AV_NOPTS_VALUE &&
2862 (st->start_time != AV_NOPTS_VALUE ||
2863 st->first_dts != AV_NOPTS_VALUE)) {
2864 if (pkt->duration == 0) {
2865 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2867 pkt->duration = av_rescale_rnd(1,
2868 num * (int64_t) st->time_base.den,
2869 den * (int64_t) st->time_base.num,
2873 duration = pkt->pts + pkt->duration;
2875 if (st->start_time != AV_NOPTS_VALUE)
2876 duration -= st->start_time;
2878 duration -= st->first_dts;
2880 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2881 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2882 st->duration = duration;
2883 st->info->last_duration = duration;
2886 av_packet_unref(pkt);
2889 /* check if all audio/video streams have valid duration */
2892 for (i = 0; i < ic->nb_streams; i++) {
2893 st = ic->streams[i];
2894 switch (st->codecpar->codec_type) {
2895 case AVMEDIA_TYPE_VIDEO:
2896 case AVMEDIA_TYPE_AUDIO:
2897 if (st->duration == AV_NOPTS_VALUE)
2904 ++retry <= DURATION_MAX_RETRY);
2906 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2908 /* warn about audio/video streams which duration could not be estimated */
2909 for (i = 0; i < ic->nb_streams; i++) {
2910 st = ic->streams[i];
2911 if (st->duration == AV_NOPTS_VALUE) {
2912 switch (st->codecpar->codec_type) {
2913 case AVMEDIA_TYPE_VIDEO:
2914 case AVMEDIA_TYPE_AUDIO:
2915 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2916 av_log(ic, AV_LOG_WARNING, "stream %d : no PTS found at end of file, duration not set\n", i);
2918 av_log(ic, AV_LOG_WARNING, "stream %d : no TS found at start of file, duration not set\n", i);
2923 fill_all_stream_timings(ic);
2925 avio_seek(ic->pb, old_offset, SEEK_SET);
2926 for (i = 0; i < ic->nb_streams; i++) {
2929 st = ic->streams[i];
2930 st->cur_dts = st->first_dts;
2931 st->last_IP_pts = AV_NOPTS_VALUE;
2932 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2933 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2934 st->pts_buffer[j] = AV_NOPTS_VALUE;
2938 /* 1:1 map to AVDurationEstimationMethod */
2939 static const char *duration_name[] = {
2940 [AVFMT_DURATION_FROM_PTS] = "pts",
2941 [AVFMT_DURATION_FROM_STREAM] = "stream",
2942 [AVFMT_DURATION_FROM_BITRATE] = "bit rate",
2945 static const char *duration_estimate_name(enum AVDurationEstimationMethod method)
2947 return duration_name[method];
2950 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2954 /* get the file size, if possible */
2955 if (ic->iformat->flags & AVFMT_NOFILE) {
2958 file_size = avio_size(ic->pb);
2959 file_size = FFMAX(0, file_size);
2962 if ((!strcmp(ic->iformat->name, "mpeg") ||
2963 !strcmp(ic->iformat->name, "mpegts")) &&
2964 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2965 /* get accurate estimate from the PTSes */
2966 estimate_timings_from_pts(ic, old_offset);
2967 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2968 } else if (has_duration(ic)) {
2969 /* at least one component has timings - we use them for all
2971 fill_all_stream_timings(ic);
2972 /* nut demuxer estimate the duration from PTS */
2973 if(!strcmp(ic->iformat->name, "nut"))
2974 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2976 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2978 /* less precise: use bitrate info */
2979 estimate_timings_from_bit_rate(ic);
2980 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2982 update_stream_timings(ic);
2986 AVStream av_unused *st;
2987 for (i = 0; i < ic->nb_streams; i++) {
2988 st = ic->streams[i];
2989 if (st->time_base.den)
2990 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2991 (double) st->start_time * av_q2d(st->time_base),
2992 (double) st->duration * av_q2d(st->time_base));
2994 av_log(ic, AV_LOG_TRACE,
2995 "format: start_time: %0.3f duration: %0.3f (estimate from %s) bitrate=%"PRId64" kb/s\n",
2996 (double) ic->start_time / AV_TIME_BASE,
2997 (double) ic->duration / AV_TIME_BASE,
2998 duration_estimate_name(ic->duration_estimation_method),
2999 (int64_t)ic->bit_rate / 1000);
3003 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
3005 AVCodecContext *avctx = st->internal->avctx;
3007 #define FAIL(errmsg) do { \
3009 *errmsg_ptr = errmsg; \
3013 if ( avctx->codec_id == AV_CODEC_ID_NONE
3014 && avctx->codec_type != AVMEDIA_TYPE_DATA)
3015 FAIL("unknown codec");
3016 switch (avctx->codec_type) {
3017 case AVMEDIA_TYPE_AUDIO:
3018 if (!avctx->frame_size && determinable_frame_size(avctx))
3019 FAIL("unspecified frame size");
3020 if (st->info->found_decoder >= 0 &&
3021 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
3022 FAIL("unspecified sample format");
3023 if (!avctx->sample_rate)
3024 FAIL("unspecified sample rate");
3025 if (!avctx->channels)
3026 FAIL("unspecified number of channels");
3027 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3028 FAIL("no decodable DTS frames");
3030 case AVMEDIA_TYPE_VIDEO:
3032 FAIL("unspecified size");
3033 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3034 FAIL("unspecified pixel format");
3035 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3036 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3037 FAIL("no frame in rv30/40 and no sar");
3039 case AVMEDIA_TYPE_SUBTITLE:
3040 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3041 FAIL("unspecified size");
3043 case AVMEDIA_TYPE_DATA:
3044 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3050 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3051 static int try_decode_frame(AVFormatContext *s, AVStream *st,
3052 const AVPacket *avpkt, AVDictionary **options)
3054 AVCodecContext *avctx = st->internal->avctx;
3055 const AVCodec *codec;
3056 int got_picture = 1, ret = 0;
3057 AVFrame *frame = av_frame_alloc();
3058 AVSubtitle subtitle;
3059 AVPacket pkt = *avpkt;
3060 int do_skip_frame = 0;
3061 enum AVDiscard skip_frame;
3064 return AVERROR(ENOMEM);
3066 if (!avcodec_is_open(avctx) &&
3067 st->info->found_decoder <= 0 &&
3068 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3069 AVDictionary *thread_opt = NULL;
3071 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3074 st->info->found_decoder = -st->codecpar->codec_id;
3079 /* Force thread count to 1 since the H.264 decoder will not extract
3080 * SPS and PPS to extradata during multi-threaded decoding. */
3081 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3082 if (s->codec_whitelist)
3083 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3084 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3086 av_dict_free(&thread_opt);
3088 st->info->found_decoder = -avctx->codec_id;
3091 st->info->found_decoder = 1;
3092 } else if (!st->info->found_decoder)
3093 st->info->found_decoder = 1;
3095 if (st->info->found_decoder < 0) {
3100 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3102 skip_frame = avctx->skip_frame;
3103 avctx->skip_frame = AVDISCARD_ALL;
3106 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3108 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3109 (!st->codec_info_nb_frames &&
3110 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3112 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3113 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3114 ret = avcodec_send_packet(avctx, &pkt);
3115 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3119 ret = avcodec_receive_frame(avctx, frame);
3122 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3124 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3125 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3126 &got_picture, &pkt);
3132 st->nb_decoded_frames++;
3137 if (!pkt.data && !got_picture)
3141 if (do_skip_frame) {
3142 avctx->skip_frame = skip_frame;
3145 av_frame_free(&frame);
3149 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3151 while (tags->id != AV_CODEC_ID_NONE) {
3159 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3162 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3163 if (tag == tags[i].tag)
3165 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3166 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3168 return AV_CODEC_ID_NONE;
3171 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3173 if (bps <= 0 || bps > 64)
3174 return AV_CODEC_ID_NONE;
3179 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3181 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3183 return AV_CODEC_ID_NONE;
3188 if (sflags & (1 << (bps - 1))) {
3191 return AV_CODEC_ID_PCM_S8;
3193 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3195 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3197 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3199 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3201 return AV_CODEC_ID_NONE;
3206 return AV_CODEC_ID_PCM_U8;
3208 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3210 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3212 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3214 return AV_CODEC_ID_NONE;
3220 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3223 if (!av_codec_get_tag2(tags, id, &tag))
3228 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3232 for (i = 0; tags && tags[i]; i++) {
3233 const AVCodecTag *codec_tags = tags[i];
3234 while (codec_tags->id != AV_CODEC_ID_NONE) {
3235 if (codec_tags->id == id) {
3236 *tag = codec_tags->tag;
3245 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3248 for (i = 0; tags && tags[i]; i++) {
3249 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3250 if (id != AV_CODEC_ID_NONE)
3253 return AV_CODEC_ID_NONE;
3256 static void compute_chapters_end(AVFormatContext *s)
3259 int64_t max_time = 0;
3261 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3262 max_time = s->duration +
3263 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3265 for (i = 0; i < s->nb_chapters; i++)
3266 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3267 AVChapter *ch = s->chapters[i];
3268 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3272 for (j = 0; j < s->nb_chapters; j++) {
3273 AVChapter *ch1 = s->chapters[j];
3274 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3276 if (j != i && next_start > ch->start && next_start < end)
3279 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3283 static int get_std_framerate(int i)
3286 return (i + 1) * 1001;
3290 return (i + 31) * 1001 * 12;
3294 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3298 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3301 /* Is the time base unreliable?
3302 * This is a heuristic to balance between quick acceptance of the values in
3303 * the headers vs. some extra checks.
3304 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3305 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3306 * And there are "variable" fps files this needs to detect as well. */
3307 static int tb_unreliable(AVCodecContext *c)
3309 if (c->time_base.den >= 101LL * c->time_base.num ||
3310 c->time_base.den < 5LL * c->time_base.num ||
3311 // c->codec_tag == AV_RL32("DIVX") ||
3312 // c->codec_tag == AV_RL32("XVID") ||
3313 c->codec_tag == AV_RL32("mp4v") ||
3314 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3315 c->codec_id == AV_CODEC_ID_GIF ||
3316 c->codec_id == AV_CODEC_ID_HEVC ||
3317 c->codec_id == AV_CODEC_ID_H264)
3322 int ff_alloc_extradata(AVCodecParameters *par, int size)
3324 av_freep(&par->extradata);
3325 par->extradata_size = 0;
3327 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3328 return AVERROR(EINVAL);
3330 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3331 if (!par->extradata)
3332 return AVERROR(ENOMEM);
3334 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3335 par->extradata_size = size;
3340 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3342 int ret = ff_alloc_extradata(par, size);
3345 ret = avio_read(pb, par->extradata, size);
3347 av_freep(&par->extradata);
3348 par->extradata_size = 0;
3349 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3350 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3356 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3359 int64_t last = st->info->last_dts;
3361 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3362 && ts - (uint64_t)last < INT64_MAX) {
3363 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3364 int64_t duration = ts - last;
3366 if (!st->info->duration_error)
3367 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3368 if (!st->info->duration_error)
3369 return AVERROR(ENOMEM);
3371 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3372 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3373 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3374 if (st->info->duration_error[0][1][i] < 1e10) {
3375 int framerate = get_std_framerate(i);
3376 double sdts = dts*framerate/(1001*12);
3377 for (j= 0; j<2; j++) {
3378 int64_t ticks = llrint(sdts+j*0.5);
3379 double error= sdts - ticks + j*0.5;
3380 st->info->duration_error[j][0][i] += error;
3381 st->info->duration_error[j][1][i] += error*error;
3385 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3386 st->info->duration_count++;
3387 st->info->rfps_duration_sum += duration;
3390 if (st->info->duration_count % 10 == 0) {
3391 int n = st->info->duration_count;
3392 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3393 if (st->info->duration_error[0][1][i] < 1e10) {
3394 double a0 = st->info->duration_error[0][0][i] / n;
3395 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3396 double a1 = st->info->duration_error[1][0][i] / n;
3397 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3398 if (error0 > 0.04 && error1 > 0.04) {
3399 st->info->duration_error[0][1][i] = 2e10;
3400 st->info->duration_error[1][1][i] = 2e10;
3406 // ignore the first 4 values, they might have some random jitter
3407 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3408 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3410 if (ts != AV_NOPTS_VALUE)
3411 st->info->last_dts = ts;
3416 void ff_rfps_calculate(AVFormatContext *ic)
3420 for (i = 0; i < ic->nb_streams; i++) {
3421 AVStream *st = ic->streams[i];
3423 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3425 // the check for tb_unreliable() is not completely correct, since this is not about handling
3426 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3427 // ipmovie.c produces.
3428 if (tb_unreliable(st->internal->avctx) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
3429 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
3430 if (st->info->duration_count>1 && !st->r_frame_rate.num
3431 && tb_unreliable(st->internal->avctx)) {
3433 double best_error= 0.01;
3434 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3436 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3439 if (st->info->codec_info_duration &&
3440 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3442 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3445 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3448 for (k= 0; k<2; k++) {
3449 int n = st->info->duration_count;
3450 double a= st->info->duration_error[k][0][j] / n;
3451 double error= st->info->duration_error[k][1][j]/n - a*a;
3453 if (error < best_error && best_error> 0.000000001) {
3455 num = get_std_framerate(j);
3458 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3461 // do not increase frame rate by more than 1 % in order to match a standard rate.
3462 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3463 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3465 if ( !st->avg_frame_rate.num
3466 && st->r_frame_rate.num && st->info->rfps_duration_sum
3467 && st->info->codec_info_duration <= 0
3468 && st->info->duration_count > 2
3469 && fabs(1.0 / (av_q2d(st->r_frame_rate) * av_q2d(st->time_base)) - st->info->rfps_duration_sum / (double)st->info->duration_count) <= 1.0
3471 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3472 st->avg_frame_rate = st->r_frame_rate;
3475 av_freep(&st->info->duration_error);
3476 st->info->last_dts = AV_NOPTS_VALUE;
3477 st->info->duration_count = 0;
3478 st->info->rfps_duration_sum = 0;
3482 static int extract_extradata_check(AVStream *st)
3484 const AVBitStreamFilter *f;
3486 f = av_bsf_get_by_name("extract_extradata");
3491 const enum AVCodecID *ids;
3492 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3493 if (*ids == st->codecpar->codec_id)
3500 static int extract_extradata_init(AVStream *st)
3502 AVStreamInternal *sti = st->internal;
3503 const AVBitStreamFilter *f;
3506 f = av_bsf_get_by_name("extract_extradata");
3510 /* check that the codec id is supported */
3511 ret = extract_extradata_check(st);
3515 sti->extract_extradata.pkt = av_packet_alloc();
3516 if (!sti->extract_extradata.pkt)
3517 return AVERROR(ENOMEM);
3519 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3523 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3528 sti->extract_extradata.bsf->time_base_in = st->time_base;
3530 ret = av_bsf_init(sti->extract_extradata.bsf);
3535 sti->extract_extradata.inited = 1;
3539 av_bsf_free(&sti->extract_extradata.bsf);
3540 av_packet_free(&sti->extract_extradata.pkt);
3544 static int extract_extradata(AVStream *st, const AVPacket *pkt)
3546 AVStreamInternal *sti = st->internal;
3550 if (!sti->extract_extradata.inited) {
3551 ret = extract_extradata_init(st);
3556 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3559 pkt_ref = sti->extract_extradata.pkt;
3560 ret = av_packet_ref(pkt_ref, pkt);
3564 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3566 av_packet_unref(pkt_ref);
3570 while (ret >= 0 && !sti->avctx->extradata) {
3574 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3576 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3581 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3585 av_assert0(!sti->avctx->extradata);
3586 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3587 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3588 if (!sti->avctx->extradata) {
3589 av_packet_unref(pkt_ref);
3590 return AVERROR(ENOMEM);
3592 memcpy(sti->avctx->extradata, extradata, extradata_size);
3593 sti->avctx->extradata_size = extradata_size;
3595 av_packet_unref(pkt_ref);
3601 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3603 int i, count = 0, ret = 0, j;
3606 AVCodecContext *avctx;
3608 int64_t old_offset = avio_tell(ic->pb);
3609 // new streams might appear, no options for those
3610 int orig_nb_streams = ic->nb_streams;
3612 int64_t max_analyze_duration = ic->max_analyze_duration;
3613 int64_t max_stream_analyze_duration;
3614 int64_t max_subtitle_analyze_duration;
3615 int64_t probesize = ic->probesize;
3616 int eof_reached = 0;
3617 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3619 flush_codecs = probesize > 0;
3621 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3623 max_stream_analyze_duration = max_analyze_duration;
3624 max_subtitle_analyze_duration = max_analyze_duration;
3625 if (!max_analyze_duration) {
3626 max_stream_analyze_duration =
3627 max_analyze_duration = 5*AV_TIME_BASE;
3628 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3629 if (!strcmp(ic->iformat->name, "flv"))
3630 max_stream_analyze_duration = 90*AV_TIME_BASE;
3631 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3632 max_stream_analyze_duration = 7*AV_TIME_BASE;
3636 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3637 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3639 for (i = 0; i < ic->nb_streams; i++) {
3640 const AVCodec *codec;
3641 AVDictionary *thread_opt = NULL;
3642 st = ic->streams[i];
3643 avctx = st->internal->avctx;
3645 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3646 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3647 /* if (!st->time_base.num)
3649 if (!avctx->time_base.num)
3650 avctx->time_base = st->time_base;
3653 /* check if the caller has overridden the codec id */
3654 #if FF_API_LAVF_AVCTX
3655 FF_DISABLE_DEPRECATION_WARNINGS
3656 if (st->codec->codec_id != st->internal->orig_codec_id) {
3657 st->codecpar->codec_id = st->codec->codec_id;
3658 st->codecpar->codec_type = st->codec->codec_type;
3659 st->internal->orig_codec_id = st->codec->codec_id;
3661 FF_ENABLE_DEPRECATION_WARNINGS
3663 // only for the split stuff
3664 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3665 st->parser = av_parser_init(st->codecpar->codec_id);
3667 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3668 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3669 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3670 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3672 } else if (st->need_parsing) {
3673 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3674 "%s, packets or times may be invalid.\n",
3675 avcodec_get_name(st->codecpar->codec_id));
3679 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3680 st->internal->orig_codec_id = st->codecpar->codec_id;
3682 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3684 goto find_stream_info_err;
3685 if (st->request_probe <= 0)
3686 st->internal->avctx_inited = 1;
3688 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3690 /* Force thread count to 1 since the H.264 decoder will not extract
3691 * SPS and PPS to extradata during multi-threaded decoding. */
3692 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 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->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]->info->last_dts = AV_NOPTS_VALUE;
3720 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3721 ic->streams[i]->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->info->codec_info_duration_fields/2 :
3756 st->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->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]->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 = ff_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->info->fps_last_dts != AV_NOPTS_VALUE &&
3847 st->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->info->fps_last_dts_idx,
3852 st->info->fps_last_dts, st->codec_info_nb_frames,
3854 st->info->fps_first_dts =
3855 st->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->info->fps_last_dts != AV_NOPTS_VALUE &&
3861 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3862 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3863 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3864 (st->info->fps_last_dts_idx - st->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->info->fps_last_dts_idx,
3869 st->info->fps_last_dts, st->codec_info_nb_frames,
3871 st->info->fps_first_dts =
3872 st->info->fps_last_dts = AV_NOPTS_VALUE;
3875 /* update stored dts values */
3876 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3877 st->info->fps_first_dts = pkt->dts;
3878 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3880 st->info->fps_last_dts = pkt->dts;
3881 st->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->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->info->fps_first_dts != AV_NOPTS_VALUE
3895 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3896 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3898 if (analyzed_all_streams) limit = max_analyze_duration;
3899 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3900 else limit = max_stream_analyze_duration;
3903 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3905 t, pkt->stream_index);
3906 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3907 av_packet_unref(&pkt1);
3910 if (pkt->duration) {
3911 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3912 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3914 st->info->codec_info_duration += pkt->duration;
3915 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3918 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3919 #if FF_API_R_FRAME_RATE
3920 ff_rfps_add_frame(ic, st, pkt->dts);
3922 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3923 st->info->frame_delay_evidence = 1;
3925 if (!st->internal->avctx->extradata) {
3926 ret = extract_extradata(st, pkt);
3928 goto unref_then_goto_end;
3931 /* If still no information, we try to open the codec and to
3932 * decompress the frame. We try to avoid that in most cases as
3933 * it takes longer and uses more memory. For MPEG-4, we need to
3934 * decompress for QuickTime.
3936 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3937 * least one frame of codec data, this makes sure the codec initializes
3938 * the channel configuration and does not only trust the values from
3940 try_decode_frame(ic, st, pkt,
3941 (options && i < orig_nb_streams) ? &options[i] : NULL);
3943 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3944 av_packet_unref(&pkt1);
3946 st->codec_info_nb_frames++;
3952 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3953 st = ic->streams[stream_index];
3954 avctx = st->internal->avctx;
3955 if (!has_codec_parameters(st, NULL)) {
3956 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3957 if (codec && !avctx->codec) {
3958 AVDictionary *opts = NULL;
3959 if (ic->codec_whitelist)
3960 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3961 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3962 av_log(ic, AV_LOG_WARNING,
3963 "Failed to open codec in %s\n",__FUNCTION__);
3964 av_dict_free(&opts);
3968 // EOF already reached while reading the stream above.
3969 // So continue with reoordering DTS with whatever delay we have.
3970 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3971 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3977 AVPacket empty_pkt = { 0 };
3979 av_init_packet(&empty_pkt);
3981 for (i = 0; i < ic->nb_streams; i++) {
3983 st = ic->streams[i];
3985 /* flush the decoders */
3986 if (st->info->found_decoder == 1) {
3988 err = try_decode_frame(ic, st, &empty_pkt,
3989 (options && i < orig_nb_streams)
3990 ? &options[i] : NULL);
3991 } while (err > 0 && !has_codec_parameters(st, NULL));
3994 av_log(ic, AV_LOG_INFO,
3995 "decoding for stream %d failed\n", st->index);
4001 ff_rfps_calculate(ic);
4003 for (i = 0; i < ic->nb_streams; i++) {
4004 st = ic->streams[i];
4005 avctx = st->internal->avctx;
4006 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
4007 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
4008 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
4009 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
4010 avctx->codec_tag= tag;
4013 /* estimate average framerate if not set by demuxer */
4014 if (st->info->codec_info_duration_fields &&
4015 !st->avg_frame_rate.num &&
4016 st->info->codec_info_duration) {
4018 double best_error = 0.01;
4019 AVRational codec_frame_rate = avctx->framerate;
4021 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4022 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4023 st->info->codec_info_duration < 0)
4025 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4026 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4027 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4029 /* Round guessed framerate to a "standard" framerate if it's
4030 * within 1% of the original estimate. */
4031 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4032 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4033 double error = fabs(av_q2d(st->avg_frame_rate) /
4034 av_q2d(std_fps) - 1);
4036 if (error < best_error) {
4038 best_fps = std_fps.num;
4041 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4042 error = fabs(av_q2d(codec_frame_rate) /
4043 av_q2d(std_fps) - 1);
4044 if (error < best_error) {
4046 best_fps = std_fps.num;
4051 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4052 best_fps, 12 * 1001, INT_MAX);
4055 if (!st->r_frame_rate.num) {
4056 if ( avctx->time_base.den * (int64_t) st->time_base.num
4057 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4058 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4059 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4061 st->r_frame_rate.num = st->time_base.den;
4062 st->r_frame_rate.den = st->time_base.num;
4065 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4066 AVRational hw_ratio = { avctx->height, avctx->width };
4067 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4070 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4071 if (!avctx->bits_per_coded_sample)
4072 avctx->bits_per_coded_sample =
4073 av_get_bits_per_sample(avctx->codec_id);
4074 // set stream disposition based on audio service type
4075 switch (avctx->audio_service_type) {
4076 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4077 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4079 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4080 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4082 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4083 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4085 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4086 st->disposition = AV_DISPOSITION_COMMENT;
4088 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4089 st->disposition = AV_DISPOSITION_KARAOKE;
4096 estimate_timings(ic, old_offset);
4098 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4100 if (ret >= 0 && ic->nb_streams)
4101 /* We could not have all the codec parameters before EOF. */
4103 for (i = 0; i < ic->nb_streams; i++) {
4105 st = ic->streams[i];
4107 /* if no packet was ever seen, update context now for has_codec_parameters */
4108 if (!st->internal->avctx_inited) {
4109 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4110 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4111 st->codecpar->format = st->internal->avctx->sample_fmt;
4112 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4114 goto find_stream_info_err;
4116 if (!has_codec_parameters(st, &errmsg)) {
4118 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4119 av_log(ic, AV_LOG_WARNING,
4120 "Could not find codec parameters for stream %d (%s): %s\n"
4121 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4128 compute_chapters_end(ic);
4130 /* update the stream parameters from the internal codec contexts */
4131 for (i = 0; i < ic->nb_streams; i++) {
4132 st = ic->streams[i];
4134 if (st->internal->avctx_inited) {
4135 int orig_w = st->codecpar->width;
4136 int orig_h = st->codecpar->height;
4137 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4139 goto find_stream_info_err;
4141 // The decoder might reduce the video size by the lowres factor.
4142 if (st->internal->avctx->lowres && orig_w) {
4143 st->codecpar->width = orig_w;
4144 st->codecpar->height = orig_h;
4149 #if FF_API_LAVF_AVCTX
4150 FF_DISABLE_DEPRECATION_WARNINGS
4151 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4153 goto find_stream_info_err;
4156 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4157 // by the lowres factor.
4158 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4159 st->codec->lowres = st->internal->avctx->lowres;
4160 st->codec->width = st->internal->avctx->width;
4161 st->codec->height = st->internal->avctx->height;
4165 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4166 st->codec->time_base = st->internal->avctx->time_base;
4167 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4169 st->codec->framerate = st->avg_frame_rate;
4171 if (st->internal->avctx->subtitle_header) {
4172 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4173 if (!st->codec->subtitle_header)
4174 goto find_stream_info_err;
4175 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4176 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4177 st->codec->subtitle_header_size);
4180 // Fields unavailable in AVCodecParameters
4181 st->codec->coded_width = st->internal->avctx->coded_width;
4182 st->codec->coded_height = st->internal->avctx->coded_height;
4183 st->codec->properties = st->internal->avctx->properties;
4184 FF_ENABLE_DEPRECATION_WARNINGS
4187 st->internal->avctx_inited = 0;
4190 find_stream_info_err:
4191 for (i = 0; i < ic->nb_streams; i++) {
4192 st = ic->streams[i];
4194 av_freep(&st->info->duration_error);
4195 avcodec_close(ic->streams[i]->internal->avctx);
4196 av_freep(&ic->streams[i]->info);
4197 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4198 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4201 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4202 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4205 unref_then_goto_end:
4206 av_packet_unref(&pkt1);
4207 goto find_stream_info_err;
4210 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4214 for (i = 0; i < ic->nb_programs; i++) {
4215 if (ic->programs[i] == last) {
4219 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4220 if (ic->programs[i]->stream_index[j] == s)
4221 return ic->programs[i];
4227 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4228 int wanted_stream_nb, int related_stream,
4229 AVCodec **decoder_ret, int flags)
4231 int i, nb_streams = ic->nb_streams;
4232 int ret = AVERROR_STREAM_NOT_FOUND;
4233 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4234 int count, multiframe, disposition;
4235 int64_t best_bitrate = -1;
4237 unsigned *program = NULL;
4238 const AVCodec *decoder = NULL, *best_decoder = NULL;
4240 if (related_stream >= 0 && wanted_stream_nb < 0) {
4241 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4243 program = p->stream_index;
4244 nb_streams = p->nb_stream_indexes;
4247 for (i = 0; i < nb_streams; i++) {
4248 int real_stream_index = program ? program[i] : i;
4249 AVStream *st = ic->streams[real_stream_index];
4250 AVCodecParameters *par = st->codecpar;
4251 if (par->codec_type != type)
4253 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4255 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4258 decoder = find_decoder(ic, st, par->codec_id);
4261 ret = AVERROR_DECODER_NOT_FOUND;
4265 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4266 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4267 count = st->codec_info_nb_frames;
4268 bitrate = par->bit_rate;
4269 multiframe = FFMIN(5, count);
4270 if ((best_disposition > disposition) ||
4271 (best_disposition == disposition && best_multiframe > multiframe) ||
4272 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4273 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4275 best_disposition = disposition;
4277 best_bitrate = bitrate;
4278 best_multiframe = multiframe;
4279 ret = real_stream_index;
4280 best_decoder = decoder;
4281 if (program && i == nb_streams - 1 && ret < 0) {
4283 nb_streams = ic->nb_streams;
4284 /* no related stream found, try again with everything */
4289 *decoder_ret = (AVCodec*)best_decoder;
4293 /*******************************************************/
4295 int av_read_play(AVFormatContext *s)
4297 if (s->iformat->read_play)
4298 return s->iformat->read_play(s);
4300 return avio_pause(s->pb, 0);
4301 return AVERROR(ENOSYS);
4304 int av_read_pause(AVFormatContext *s)
4306 if (s->iformat->read_pause)
4307 return s->iformat->read_pause(s);
4309 return avio_pause(s->pb, 1);
4310 return AVERROR(ENOSYS);
4313 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4318 dst->time_base = src->time_base;
4319 dst->nb_frames = src->nb_frames;
4320 dst->disposition = src->disposition;
4321 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4322 dst->avg_frame_rate = src->avg_frame_rate;
4323 dst->r_frame_rate = src->r_frame_rate;
4325 av_dict_free(&dst->metadata);
4326 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4330 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4334 /* Free existing side data*/
4335 for (i = 0; i < dst->nb_side_data; i++)
4336 av_free(dst->side_data[i].data);
4337 av_freep(&dst->side_data);
4338 dst->nb_side_data = 0;
4340 /* Copy side data if present */
4341 if (src->nb_side_data) {
4342 dst->side_data = av_mallocz_array(src->nb_side_data,
4343 sizeof(AVPacketSideData));
4344 if (!dst->side_data)
4345 return AVERROR(ENOMEM);
4346 dst->nb_side_data = src->nb_side_data;
4348 for (i = 0; i < src->nb_side_data; i++) {
4349 uint8_t *data = av_memdup(src->side_data[i].data,
4350 src->side_data[i].size);
4352 return AVERROR(ENOMEM);
4353 dst->side_data[i].type = src->side_data[i].type;
4354 dst->side_data[i].size = src->side_data[i].size;
4355 dst->side_data[i].data = data;
4359 #if FF_API_LAVF_FFSERVER
4360 FF_DISABLE_DEPRECATION_WARNINGS
4361 av_freep(&dst->recommended_encoder_configuration);
4362 if (src->recommended_encoder_configuration) {
4363 const char *conf_str = src->recommended_encoder_configuration;
4364 dst->recommended_encoder_configuration = av_strdup(conf_str);
4365 if (!dst->recommended_encoder_configuration)
4366 return AVERROR(ENOMEM);
4368 FF_ENABLE_DEPRECATION_WARNINGS
4374 static void free_stream(AVStream **pst)
4376 AVStream *st = *pst;
4382 for (i = 0; i < st->nb_side_data; i++)
4383 av_freep(&st->side_data[i].data);
4384 av_freep(&st->side_data);
4387 av_parser_close(st->parser);
4389 if (st->attached_pic.data)
4390 av_packet_unref(&st->attached_pic);
4393 avcodec_free_context(&st->internal->avctx);
4394 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4395 av_bsf_free(&st->internal->bsfcs[i]);
4396 av_freep(&st->internal->bsfcs);
4398 av_freep(&st->internal->priv_pts);
4399 av_bsf_free(&st->internal->extract_extradata.bsf);
4400 av_packet_free(&st->internal->extract_extradata.pkt);
4402 av_freep(&st->internal);
4404 av_dict_free(&st->metadata);
4405 avcodec_parameters_free(&st->codecpar);
4406 av_freep(&st->probe_data.buf);
4407 av_freep(&st->index_entries);
4408 #if FF_API_LAVF_AVCTX
4409 FF_DISABLE_DEPRECATION_WARNINGS
4410 avcodec_free_context(&st->codec);
4411 FF_ENABLE_DEPRECATION_WARNINGS
4413 av_freep(&st->priv_data);
4415 av_freep(&st->info->duration_error);
4416 av_freep(&st->info);
4417 #if FF_API_LAVF_FFSERVER
4418 FF_DISABLE_DEPRECATION_WARNINGS
4419 av_freep(&st->recommended_encoder_configuration);
4420 FF_ENABLE_DEPRECATION_WARNINGS
4426 void ff_free_stream(AVFormatContext *s, AVStream *st)
4428 av_assert0(s->nb_streams>0);
4429 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4431 free_stream(&s->streams[ --s->nb_streams ]);
4434 void avformat_free_context(AVFormatContext *s)
4441 if (s->oformat && s->oformat->deinit && s->internal->initialized)
4442 s->oformat->deinit(s);
4445 if (s->iformat && s->iformat->priv_class && s->priv_data)
4446 av_opt_free(s->priv_data);
4447 if (s->oformat && s->oformat->priv_class && s->priv_data)
4448 av_opt_free(s->priv_data);
4450 for (i = s->nb_streams - 1; i >= 0; i--)
4451 ff_free_stream(s, s->streams[i]);
4454 for (i = s->nb_programs - 1; i >= 0; i--) {
4455 av_dict_free(&s->programs[i]->metadata);
4456 av_freep(&s->programs[i]->stream_index);
4457 av_freep(&s->programs[i]);
4459 av_freep(&s->programs);
4460 av_freep(&s->priv_data);
4461 while (s->nb_chapters--) {
4462 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4463 av_freep(&s->chapters[s->nb_chapters]);
4465 av_freep(&s->chapters);
4466 av_dict_free(&s->metadata);
4467 av_dict_free(&s->internal->id3v2_meta);
4468 av_freep(&s->streams);
4469 flush_packet_queue(s);
4470 av_freep(&s->internal);
4475 void avformat_close_input(AVFormatContext **ps)
4486 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4487 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4490 flush_packet_queue(s);
4493 if (s->iformat->read_close)
4494 s->iformat->read_close(s);
4496 avformat_free_context(s);
4503 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4509 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4510 if (s->max_streams < INT_MAX/sizeof(*streams))
4511 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);
4514 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4517 s->streams = streams;
4519 st = av_mallocz(sizeof(AVStream));
4522 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4526 st->info->last_dts = AV_NOPTS_VALUE;
4528 #if FF_API_LAVF_AVCTX
4529 FF_DISABLE_DEPRECATION_WARNINGS
4530 st->codec = avcodec_alloc_context3(c);
4536 FF_ENABLE_DEPRECATION_WARNINGS
4539 st->internal = av_mallocz(sizeof(*st->internal));
4543 st->codecpar = avcodec_parameters_alloc();
4547 st->internal->avctx = avcodec_alloc_context3(NULL);
4548 if (!st->internal->avctx)
4552 #if FF_API_LAVF_AVCTX
4553 FF_DISABLE_DEPRECATION_WARNINGS
4554 /* no default bitrate if decoding */
4555 st->codec->bit_rate = 0;
4556 FF_ENABLE_DEPRECATION_WARNINGS
4559 /* default pts setting is MPEG-like */
4560 avpriv_set_pts_info(st, 33, 1, 90000);
4561 /* we set the current DTS to 0 so that formats without any timestamps
4562 * but durations get some timestamps, formats with some unknown
4563 * timestamps have their first few packets buffered and the
4564 * timestamps corrected before they are returned to the user */
4565 st->cur_dts = RELATIVE_TS_BASE;
4567 st->cur_dts = AV_NOPTS_VALUE;
4570 st->index = s->nb_streams;
4571 st->start_time = AV_NOPTS_VALUE;
4572 st->duration = AV_NOPTS_VALUE;
4573 st->first_dts = AV_NOPTS_VALUE;
4574 st->probe_packets = s->max_probe_packets;
4575 st->pts_wrap_reference = AV_NOPTS_VALUE;
4576 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4578 st->last_IP_pts = AV_NOPTS_VALUE;
4579 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4580 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4581 st->pts_buffer[i] = AV_NOPTS_VALUE;
4583 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4585 #if FF_API_R_FRAME_RATE
4586 st->info->last_dts = AV_NOPTS_VALUE;
4588 st->info->fps_first_dts = AV_NOPTS_VALUE;
4589 st->info->fps_last_dts = AV_NOPTS_VALUE;
4591 st->inject_global_side_data = s->internal->inject_global_side_data;
4593 st->internal->need_context_update = 1;
4595 s->streams[s->nb_streams++] = st;
4602 AVProgram *av_new_program(AVFormatContext *ac, int id)
4604 AVProgram *program = NULL;
4607 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4609 for (i = 0; i < ac->nb_programs; i++)
4610 if (ac->programs[i]->id == id)
4611 program = ac->programs[i];
4614 program = av_mallocz(sizeof(AVProgram));
4617 dynarray_add(&ac->programs, &ac->nb_programs, program);
4618 program->discard = AVDISCARD_NONE;
4619 program->pmt_version = -1;
4622 program->pts_wrap_reference = AV_NOPTS_VALUE;
4623 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4625 program->start_time =
4626 program->end_time = AV_NOPTS_VALUE;
4631 AVChapter *avpriv_new_chapter(AVFormatContext *s, int 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 for (i = 0; i < s->nb_chapters; i++)
4643 if (s->chapters[i]->id == id)
4644 chapter = s->chapters[i];
4647 chapter = av_mallocz(sizeof(AVChapter));
4650 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4652 av_dict_set(&chapter->metadata, "title", title, 0);
4654 chapter->time_base = time_base;
4655 chapter->start = start;
4661 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4664 AVProgram *program = NULL;
4667 if (idx >= ac->nb_streams) {
4668 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4672 for (i = 0; i < ac->nb_programs; i++) {
4673 if (ac->programs[i]->id != progid)
4675 program = ac->programs[i];
4676 for (j = 0; j < program->nb_stream_indexes; j++)
4677 if (program->stream_index[j] == idx)
4680 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4683 program->stream_index = tmp;
4684 program->stream_index[program->nb_stream_indexes++] = idx;
4689 uint64_t ff_ntp_time(void)
4691 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4694 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4696 uint64_t ntp_ts, frac_part, sec;
4699 //current ntp time in seconds and micro seconds
4700 sec = ntp_time_us / 1000000;
4701 usec = ntp_time_us % 1000000;
4703 //encoding in ntp timestamp format
4704 frac_part = usec * 0xFFFFFFFFULL;
4705 frac_part /= 1000000;
4707 if (sec > 0xFFFFFFFFULL)
4708 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4711 ntp_ts |= frac_part;
4716 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4719 char *q, buf1[20], c;
4720 int nd, len, percentd_found;
4732 while (av_isdigit(*p))
4733 nd = nd * 10 + *p++ - '0';
4735 } while (av_isdigit(c));
4741 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4746 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4748 if ((q - buf + len) > buf_size - 1)
4750 memcpy(q, buf1, len);
4758 if ((q - buf) < buf_size - 1)
4762 if (!percentd_found)
4771 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4773 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4776 void av_url_split(char *proto, int proto_size,
4777 char *authorization, int authorization_size,
4778 char *hostname, int hostname_size,
4779 int *port_ptr, char *path, int path_size, const char *url)
4781 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4787 if (authorization_size > 0)
4788 authorization[0] = 0;
4789 if (hostname_size > 0)
4794 /* parse protocol */
4795 if ((p = strchr(url, ':'))) {
4796 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4803 /* no protocol means plain filename */
4804 av_strlcpy(path, url, path_size);
4808 /* separate path from hostname */
4809 ls = strchr(p, '/');
4810 ls2 = strchr(p, '?');
4814 ls = FFMIN(ls, ls2);
4816 av_strlcpy(path, ls, path_size);
4818 ls = &p[strlen(p)]; // XXX
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, int *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;
5505 int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
5506 uint8_t *data, size_t size)
5508 AVPacketSideData *sd, *tmp;
5511 for (i = 0; i < st->nb_side_data; i++) {
5512 sd = &st->side_data[i];
5514 if (sd->type == type) {
5515 av_freep(&sd->data);
5522 if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
5523 return AVERROR(ERANGE);
5525 tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
5527 return AVERROR(ENOMEM);
5530 st->side_data = tmp;
5533 sd = &st->side_data[st->nb_side_data - 1];
5541 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5545 uint8_t *data = av_malloc(size);
5550 ret = av_stream_add_side_data(st, type, data, size);
5559 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5562 const AVBitStreamFilter *bsf;
5564 AVCodecParameters *in_par;
5566 if (!(bsf = av_bsf_get_by_name(name))) {
5567 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5568 return AVERROR_BSF_NOT_FOUND;
5571 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5574 if (st->internal->nb_bsfcs) {
5575 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5576 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5578 in_par = st->codecpar;
5579 bsfc->time_base_in = st->time_base;
5582 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5587 if (args && bsfc->filter->priv_class) {
5588 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5589 const char * shorthand[2] = {NULL};
5592 shorthand[0] = opt->name;
5594 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5600 if ((ret = av_bsf_init(bsfc)) < 0) {
5605 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5610 av_log(NULL, AV_LOG_VERBOSE,
5611 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5612 name, args ? args : "");
5617 FF_DISABLE_DEPRECATION_WARNINGS
5618 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5619 AVBitStreamFilterContext *bsfc)
5623 AVPacket new_pkt = *pkt;
5624 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5625 &new_pkt.data, &new_pkt.size,
5626 pkt->data, pkt->size,
5627 pkt->flags & AV_PKT_FLAG_KEY);
5628 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5629 av_packet_unref(pkt);
5630 memset(pkt, 0, sizeof(*pkt));
5633 if(a == 0 && new_pkt.data != pkt->data) {
5634 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
5636 memcpy(t, new_pkt.data, new_pkt.size);
5637 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5642 a = AVERROR(ENOMEM);
5646 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5647 av_buffer_default_free, NULL, 0);
5649 pkt->side_data = NULL;
5650 pkt->side_data_elems = 0;
5651 av_packet_unref(pkt);
5653 av_freep(&new_pkt.data);
5654 a = AVERROR(ENOMEM);
5658 av_log(codec, AV_LOG_ERROR,
5659 "Failed to open bitstream filter %s for stream %d with codec %s",
5660 bsfc->filter->name, pkt->stream_index,
5661 codec->codec ? codec->codec->name : "copy");
5671 FF_ENABLE_DEPRECATION_WARNINGS
5674 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5677 return AVERROR(EINVAL);
5679 if (!(s->oformat->flags & AVFMT_NOFILE))
5680 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5684 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5687 s->io_close(s, *pb);
5691 int ff_is_http_proto(char *filename) {
5692 const char *proto = avio_find_protocol_name(filename);
5693 return proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0;
5696 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5698 AVDictionaryEntry *entry;
5699 int64_t parsed_timestamp;
5701 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5702 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5703 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5706 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5713 int ff_standardize_creation_time(AVFormatContext *s)
5716 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5718 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5722 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5727 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5729 if (size != AVPALETTE_SIZE) {
5730 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5731 return AVERROR_INVALIDDATA;
5733 memcpy(palette, side_data, AVPALETTE_SIZE);
5737 if (ret == CONTAINS_PAL) {
5739 for (i = 0; i < AVPALETTE_COUNT; i++)
5740 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5747 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5752 ret = av_bprint_finalize(buf, &str);
5755 if (!av_bprint_is_complete(buf)) {
5757 return AVERROR(ENOMEM);
5760 par->extradata = str;
5761 /* Note: the string is NUL terminated (so extradata can be read as a
5762 * string), but the ending character is not accounted in the size (in
5763 * binary formats you are likely not supposed to mux that character). When
5764 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5766 par->extradata_size = buf->len;
5770 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5771 AVStream *ost, const AVStream *ist,
5772 enum AVTimebaseSource copy_tb)
5774 //TODO: use [io]st->internal->avctx
5775 const AVCodecContext *dec_ctx = ist->codec;
5776 AVCodecContext *enc_ctx = ost->codec;
5778 enc_ctx->time_base = ist->time_base;
5780 * Avi is a special case here because it supports variable fps but
5781 * having the fps and timebase differe significantly adds quite some
5784 if (!strcmp(ofmt->name, "avi")) {
5785 #if FF_API_R_FRAME_RATE
5786 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5787 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5788 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5789 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5790 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5791 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5792 enc_ctx->time_base.num = ist->r_frame_rate.den;
5793 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5794 enc_ctx->ticks_per_frame = 2;
5797 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5798 && av_q2d(ist->time_base) < 1.0/500
5799 || copy_tb == AVFMT_TBCF_DECODER) {
5800 enc_ctx->time_base = dec_ctx->time_base;
5801 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5802 enc_ctx->time_base.den *= 2;
5803 enc_ctx->ticks_per_frame = 2;
5805 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5806 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5807 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5808 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5809 && av_q2d(ist->time_base) < 1.0/500
5810 || copy_tb == AVFMT_TBCF_DECODER) {
5811 enc_ctx->time_base = dec_ctx->time_base;
5812 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5816 if ((enc_ctx->codec_tag == AV_RL32("tmcd") || ost->codecpar->codec_tag == AV_RL32("tmcd"))
5817 && dec_ctx->time_base.num < dec_ctx->time_base.den
5818 && dec_ctx->time_base.num > 0
5819 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5820 enc_ctx->time_base = dec_ctx->time_base;
5823 if (ost->avg_frame_rate.num)
5824 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5826 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5827 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
5832 AVRational av_stream_get_codec_timebase(const AVStream *st)
5834 // See avformat_transfer_internal_stream_timing_info() TODO.
5835 #if FF_API_LAVF_AVCTX
5836 FF_DISABLE_DEPRECATION_WARNINGS
5837 return st->codec->time_base;
5838 FF_ENABLE_DEPRECATION_WARNINGS
5840 return st->internal->avctx->time_base;
5844 void ff_format_set_url(AVFormatContext *s, char *url)
5849 #if FF_API_FORMAT_FILENAME
5850 FF_DISABLE_DEPRECATION_WARNINGS
5851 av_strlcpy(s->filename, url, sizeof(s->filename));
5852 FF_ENABLE_DEPRECATION_WARNINGS