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, 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->props & AV_CODEC_PROP_INTRA_ONLY))
1029 static int has_decode_delay_been_guessed(AVStream *st)
1031 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
1032 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
1034 #if CONFIG_H264_DECODER
1035 if (st->internal->avctx->has_b_frames &&
1036 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
1039 if (st->internal->avctx->has_b_frames<3)
1040 return st->nb_decoded_frames >= 7;
1041 else if (st->internal->avctx->has_b_frames<4)
1042 return st->nb_decoded_frames >= 18;
1044 return st->nb_decoded_frames >= 20;
1047 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
1051 if (pktl == s->internal->packet_buffer_end)
1052 return s->internal->parse_queue;
1056 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
1057 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1058 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1061 int delay = st->internal->avctx->has_b_frames;
1064 if (dts == AV_NOPTS_VALUE) {
1065 int64_t best_score = INT64_MAX;
1066 for (i = 0; i<delay; i++) {
1067 if (st->pts_reorder_error_count[i]) {
1068 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
1069 if (score < best_score) {
1071 dts = pts_buffer[i];
1076 for (i = 0; i<delay; i++) {
1077 if (pts_buffer[i] != AV_NOPTS_VALUE) {
1078 int64_t diff = FFABS(pts_buffer[i] - dts)
1079 + (uint64_t)st->pts_reorder_error[i];
1080 diff = FFMAX(diff, st->pts_reorder_error[i]);
1081 st->pts_reorder_error[i] = diff;
1082 st->pts_reorder_error_count[i]++;
1083 if (st->pts_reorder_error_count[i] > 250) {
1084 st->pts_reorder_error[i] >>= 1;
1085 st->pts_reorder_error_count[i] >>= 1;
1092 if (dts == AV_NOPTS_VALUE)
1093 dts = pts_buffer[0];
1099 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1100 * of the packets in a window.
1102 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1103 AVPacketList *pkt_buffer)
1105 AVStream *st = s->streams[stream_index];
1106 int delay = st->internal->avctx->has_b_frames;
1109 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1111 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1112 pts_buffer[i] = AV_NOPTS_VALUE;
1114 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1115 if (pkt_buffer->pkt.stream_index != stream_index)
1118 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1119 pts_buffer[0] = pkt_buffer->pkt.pts;
1120 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1121 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1123 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1128 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1129 int64_t dts, int64_t pts, AVPacket *pkt)
1131 AVStream *st = s->streams[stream_index];
1132 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1133 AVPacketList *pktl_it;
1137 if (st->first_dts != AV_NOPTS_VALUE ||
1138 dts == AV_NOPTS_VALUE ||
1139 st->cur_dts == AV_NOPTS_VALUE ||
1140 st->cur_dts < INT_MIN + RELATIVE_TS_BASE ||
1144 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1146 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1148 if (is_relative(pts))
1151 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1152 if (pktl_it->pkt.stream_index != stream_index)
1154 if (is_relative(pktl_it->pkt.pts))
1155 pktl_it->pkt.pts += shift;
1157 if (is_relative(pktl_it->pkt.dts))
1158 pktl_it->pkt.dts += shift;
1160 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1161 st->start_time = pktl_it->pkt.pts;
1162 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1163 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1167 if (has_decode_delay_been_guessed(st)) {
1168 update_dts_from_pts(s, stream_index, pktl);
1171 if (st->start_time == AV_NOPTS_VALUE) {
1172 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO || !(pkt->flags & AV_PKT_FLAG_DISCARD)) {
1173 st->start_time = pts;
1175 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1176 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1180 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1181 int stream_index, int duration)
1183 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1184 int64_t cur_dts = RELATIVE_TS_BASE;
1186 if (st->first_dts != AV_NOPTS_VALUE) {
1187 if (st->update_initial_durations_done)
1189 st->update_initial_durations_done = 1;
1190 cur_dts = st->first_dts;
1191 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1192 if (pktl->pkt.stream_index == stream_index) {
1193 if (pktl->pkt.pts != pktl->pkt.dts ||
1194 pktl->pkt.dts != AV_NOPTS_VALUE ||
1197 cur_dts -= duration;
1200 if (pktl && pktl->pkt.dts != st->first_dts) {
1201 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1202 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1206 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1209 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1210 st->first_dts = cur_dts;
1211 } else if (st->cur_dts != RELATIVE_TS_BASE)
1214 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1215 if (pktl->pkt.stream_index != stream_index)
1217 if ((pktl->pkt.pts == pktl->pkt.dts ||
1218 pktl->pkt.pts == AV_NOPTS_VALUE) &&
1219 (pktl->pkt.dts == AV_NOPTS_VALUE ||
1220 pktl->pkt.dts == st->first_dts ||
1221 pktl->pkt.dts == RELATIVE_TS_BASE) &&
1222 !pktl->pkt.duration) {
1223 pktl->pkt.dts = cur_dts;
1224 if (!st->internal->avctx->has_b_frames)
1225 pktl->pkt.pts = cur_dts;
1226 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1227 pktl->pkt.duration = duration;
1230 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1233 st->cur_dts = cur_dts;
1236 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1237 AVCodecParserContext *pc, AVPacket *pkt,
1238 int64_t next_dts, int64_t next_pts)
1240 int num, den, presentation_delayed, delay, i;
1242 AVRational duration;
1243 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1244 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1246 if (s->flags & AVFMT_FLAG_NOFILLIN)
1249 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1250 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1251 if (st->last_dts_for_order_check <= pkt->dts) {
1254 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1255 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1257 st->last_dts_for_order_check);
1258 st->dts_misordered++;
1260 if (st->dts_ordered + st->dts_misordered > 250) {
1261 st->dts_ordered >>= 1;
1262 st->dts_misordered >>= 1;
1266 st->last_dts_for_order_check = pkt->dts;
1267 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1268 pkt->dts = AV_NOPTS_VALUE;
1271 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1272 pkt->dts = AV_NOPTS_VALUE;
1274 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1275 && !st->internal->avctx->has_b_frames)
1276 //FIXME Set low_delay = 0 when has_b_frames = 1
1277 st->internal->avctx->has_b_frames = 1;
1279 /* do we have a video B-frame ? */
1280 delay = st->internal->avctx->has_b_frames;
1281 presentation_delayed = 0;
1283 /* XXX: need has_b_frame, but cannot get it if the codec is
1284 * not initialized */
1286 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1287 presentation_delayed = 1;
1289 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1290 st->pts_wrap_bits < 63 &&
1291 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1292 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1293 pkt->dts -= 1LL << st->pts_wrap_bits;
1295 pkt->pts += 1LL << st->pts_wrap_bits;
1298 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1299 * We take the conservative approach and discard both.
1300 * Note: If this is misbehaving for an H.264 file, then possibly
1301 * presentation_delayed is not set correctly. */
1302 if (delay == 1 && pkt->dts == pkt->pts &&
1303 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1304 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1305 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1306 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1307 pkt->dts = AV_NOPTS_VALUE;
1310 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1311 if (pkt->duration <= 0) {
1312 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1314 duration = (AVRational) {num, den};
1315 pkt->duration = av_rescale_rnd(1,
1316 num * (int64_t) st->time_base.den,
1317 den * (int64_t) st->time_base.num,
1322 if (pkt->duration > 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1323 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1325 /* Correct timestamps with byte offset if demuxers only have timestamps
1326 * on packet boundaries */
1327 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1328 /* this will estimate bitrate based on this frame's duration and size */
1329 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1330 if (pkt->pts != AV_NOPTS_VALUE)
1332 if (pkt->dts != AV_NOPTS_VALUE)
1336 /* This may be redundant, but it should not hurt. */
1337 if (pkt->dts != AV_NOPTS_VALUE &&
1338 pkt->pts != AV_NOPTS_VALUE &&
1339 pkt->pts > pkt->dts)
1340 presentation_delayed = 1;
1342 if (s->debug & FF_FDEBUG_TS)
1343 av_log(s, AV_LOG_DEBUG,
1344 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1345 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1346 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1348 /* Interpolate PTS and DTS if they are not present. We skip H264
1349 * currently because delay and has_b_frames are not reliably set. */
1350 if ((delay == 0 || (delay == 1 && pc)) &&
1352 if (presentation_delayed) {
1353 /* DTS = decompression timestamp */
1354 /* PTS = presentation timestamp */
1355 if (pkt->dts == AV_NOPTS_VALUE)
1356 pkt->dts = st->last_IP_pts;
1357 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1358 if (pkt->dts == AV_NOPTS_VALUE)
1359 pkt->dts = st->cur_dts;
1361 /* This is tricky: the dts must be incremented by the duration
1362 * of the frame we are displaying, i.e. the last I- or P-frame. */
1363 if (st->last_IP_duration == 0 && (uint64_t)pkt->duration <= INT32_MAX)
1364 st->last_IP_duration = pkt->duration;
1365 if (pkt->dts != AV_NOPTS_VALUE)
1366 st->cur_dts = pkt->dts + st->last_IP_duration;
1367 if (pkt->dts != AV_NOPTS_VALUE &&
1368 pkt->pts == AV_NOPTS_VALUE &&
1369 st->last_IP_duration > 0 &&
1370 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1371 next_dts != next_pts &&
1372 next_pts != AV_NOPTS_VALUE)
1373 pkt->pts = next_dts;
1375 if ((uint64_t)pkt->duration <= INT32_MAX)
1376 st->last_IP_duration = pkt->duration;
1377 st->last_IP_pts = pkt->pts;
1378 /* Cannot compute PTS if not present (we can compute it only
1379 * by knowing the future. */
1380 } else if (pkt->pts != AV_NOPTS_VALUE ||
1381 pkt->dts != AV_NOPTS_VALUE ||
1382 pkt->duration > 0 ) {
1384 /* presentation is not delayed : PTS and DTS are the same */
1385 if (pkt->pts == AV_NOPTS_VALUE)
1386 pkt->pts = pkt->dts;
1387 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1389 if (pkt->pts == AV_NOPTS_VALUE)
1390 pkt->pts = st->cur_dts;
1391 pkt->dts = pkt->pts;
1392 if (pkt->pts != AV_NOPTS_VALUE && duration.num >= 0)
1393 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1397 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1398 st->pts_buffer[0] = pkt->pts;
1399 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1400 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1402 if(has_decode_delay_been_guessed(st))
1403 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1405 // We skipped it above so we try here.
1407 // This should happen on the first packet
1408 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1409 if (pkt->dts > st->cur_dts)
1410 st->cur_dts = pkt->dts;
1412 if (s->debug & FF_FDEBUG_TS)
1413 av_log(s, AV_LOG_DEBUG, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s st:%d (%d)\n",
1414 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts), st->index, st->id);
1417 if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA || is_intra_only(st->codecpar->codec_id))
1418 pkt->flags |= AV_PKT_FLAG_KEY;
1419 #if FF_API_CONVERGENCE_DURATION
1420 FF_DISABLE_DEPRECATION_WARNINGS
1422 pkt->convergence_duration = pc->convergence_duration;
1423 FF_ENABLE_DEPRECATION_WARNINGS
1427 void ff_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1429 AVPacketList *tmp = *pkt_buf;
1432 AVPacketList *pktl = tmp;
1434 av_packet_unref(&pktl->pkt);
1438 *pkt_buf_end = NULL;
1442 * Parse a packet, add all split parts to parse_queue.
1444 * @param pkt Packet to parse; must not be NULL.
1445 * @param flush Indicates whether to flush. If set, pkt must be blank.
1447 static int parse_packet(AVFormatContext *s, AVPacket *pkt,
1448 int stream_index, int flush)
1451 AVStream *st = s->streams[stream_index];
1452 uint8_t *data = pkt->data;
1453 int size = pkt->size;
1454 int ret = 0, got_output = flush;
1456 if (size || flush) {
1457 av_init_packet(&out_pkt);
1458 } else if (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1459 // preserve 0-size sync packets
1460 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1463 while (size > 0 || (flush && got_output)) {
1465 int64_t next_pts = pkt->pts;
1466 int64_t next_dts = pkt->dts;
1468 len = av_parser_parse2(st->parser, st->internal->avctx,
1469 &out_pkt.data, &out_pkt.size, data, size,
1470 pkt->pts, pkt->dts, pkt->pos);
1472 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1474 /* increment read pointer */
1478 got_output = !!out_pkt.size;
1483 if (pkt->buf && out_pkt.data == pkt->data) {
1484 /* reference pkt->buf only when out_pkt.data is guaranteed to point
1485 * to data in it and not in the parser's internal buffer. */
1486 /* XXX: Ensure this is the case with all parsers when st->parser->flags
1487 * is PARSER_FLAG_COMPLETE_FRAMES and check for that instead? */
1488 out_pkt.buf = av_buffer_ref(pkt->buf);
1490 ret = AVERROR(ENOMEM);
1494 ret = av_packet_make_refcounted(&out_pkt);
1499 if (pkt->side_data) {
1500 out_pkt.side_data = pkt->side_data;
1501 out_pkt.side_data_elems = pkt->side_data_elems;
1502 pkt->side_data = NULL;
1503 pkt->side_data_elems = 0;
1506 /* set the duration */
1507 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1508 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1509 if (st->internal->avctx->sample_rate > 0) {
1511 av_rescale_q_rnd(st->parser->duration,
1512 (AVRational) { 1, st->internal->avctx->sample_rate },
1518 out_pkt.stream_index = st->index;
1519 out_pkt.pts = st->parser->pts;
1520 out_pkt.dts = st->parser->dts;
1521 out_pkt.pos = st->parser->pos;
1522 out_pkt.flags |= pkt->flags & AV_PKT_FLAG_DISCARD;
1524 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1525 out_pkt.pos = st->parser->frame_offset;
1527 if (st->parser->key_frame == 1 ||
1528 (st->parser->key_frame == -1 &&
1529 st->parser->pict_type == AV_PICTURE_TYPE_I))
1530 out_pkt.flags |= AV_PKT_FLAG_KEY;
1532 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1533 out_pkt.flags |= AV_PKT_FLAG_KEY;
1535 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1537 ret = ff_packet_list_put(&s->internal->parse_queue,
1538 &s->internal->parse_queue_end,
1541 av_packet_unref(&out_pkt);
1546 /* end of the stream => close and free the parser */
1548 av_parser_close(st->parser);
1553 av_packet_unref(pkt);
1557 int ff_packet_list_get(AVPacketList **pkt_buffer,
1558 AVPacketList **pkt_buffer_end,
1562 av_assert0(*pkt_buffer);
1565 *pkt_buffer = pktl->next;
1567 *pkt_buffer_end = NULL;
1572 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1574 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1577 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1579 int ret, i, got_packet = 0;
1580 AVDictionary *metadata = NULL;
1582 while (!got_packet && !s->internal->parse_queue) {
1585 /* read next packet */
1586 ret = ff_read_packet(s, pkt);
1588 if (ret == AVERROR(EAGAIN))
1590 /* flush the parsers */
1591 for (i = 0; i < s->nb_streams; i++) {
1593 if (st->parser && st->need_parsing)
1594 parse_packet(s, pkt, st->index, 1);
1596 /* all remaining packets are now in parse_queue =>
1597 * really terminate parsing */
1601 st = s->streams[pkt->stream_index];
1603 /* update context if required */
1604 if (st->internal->need_context_update) {
1605 if (avcodec_is_open(st->internal->avctx)) {
1606 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1607 avcodec_close(st->internal->avctx);
1608 st->info->found_decoder = 0;
1611 /* close parser, because it depends on the codec */
1612 if (st->parser && st->internal->avctx->codec_id != st->codecpar->codec_id) {
1613 av_parser_close(st->parser);
1617 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1619 av_packet_unref(pkt);
1623 #if FF_API_LAVF_AVCTX
1624 FF_DISABLE_DEPRECATION_WARNINGS
1625 /* update deprecated public codec context */
1626 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1628 av_packet_unref(pkt);
1631 FF_ENABLE_DEPRECATION_WARNINGS
1634 st->internal->need_context_update = 0;
1637 if (pkt->pts != AV_NOPTS_VALUE &&
1638 pkt->dts != AV_NOPTS_VALUE &&
1639 pkt->pts < pkt->dts) {
1640 av_log(s, AV_LOG_WARNING,
1641 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1643 av_ts2str(pkt->pts),
1644 av_ts2str(pkt->dts),
1647 if (s->debug & FF_FDEBUG_TS)
1648 av_log(s, AV_LOG_DEBUG,
1649 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1651 av_ts2str(pkt->pts),
1652 av_ts2str(pkt->dts),
1653 pkt->size, pkt->duration, pkt->flags);
1655 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1656 st->parser = av_parser_init(st->codecpar->codec_id);
1658 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1659 "%s, packets or times may be invalid.\n",
1660 avcodec_get_name(st->codecpar->codec_id));
1661 /* no parser available: just output the raw packets */
1662 st->need_parsing = AVSTREAM_PARSE_NONE;
1663 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1664 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1665 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1666 st->parser->flags |= PARSER_FLAG_ONCE;
1667 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1668 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1671 if (!st->need_parsing || !st->parser) {
1672 /* no parsing needed: we just output the packet as is */
1673 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1674 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1675 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1676 ff_reduce_index(s, st->index);
1677 av_add_index_entry(st, pkt->pos, pkt->dts,
1678 0, 0, AVINDEX_KEYFRAME);
1681 } else if (st->discard < AVDISCARD_ALL) {
1682 if ((ret = parse_packet(s, pkt, pkt->stream_index, 0)) < 0)
1684 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1685 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1686 st->codecpar->channels = st->internal->avctx->channels;
1687 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1688 st->codecpar->codec_id = st->internal->avctx->codec_id;
1691 av_packet_unref(pkt);
1693 if (pkt->flags & AV_PKT_FLAG_KEY)
1694 st->skip_to_keyframe = 0;
1695 if (st->skip_to_keyframe) {
1696 av_packet_unref(pkt);
1701 if (!got_packet && s->internal->parse_queue)
1702 ret = ff_packet_list_get(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1705 AVStream *st = s->streams[pkt->stream_index];
1706 int discard_padding = 0;
1707 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1708 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1709 int64_t sample = ts_to_samples(st, pts);
1710 int duration = ts_to_samples(st, pkt->duration);
1711 int64_t end_sample = sample + duration;
1712 if (duration > 0 && end_sample >= st->first_discard_sample &&
1713 sample < st->last_discard_sample)
1714 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1716 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1717 st->skip_samples = st->start_skip_samples;
1718 if (st->skip_samples || discard_padding) {
1719 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1721 AV_WL32(p, st->skip_samples);
1722 AV_WL32(p + 4, discard_padding);
1723 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1725 st->skip_samples = 0;
1728 if (st->inject_global_side_data) {
1729 for (i = 0; i < st->nb_side_data; i++) {
1730 AVPacketSideData *src_sd = &st->side_data[i];
1733 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1736 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1738 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1742 memcpy(dst_data, src_sd->data, src_sd->size);
1744 st->inject_global_side_data = 0;
1748 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1750 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1751 av_dict_copy(&s->metadata, metadata, 0);
1752 av_dict_free(&metadata);
1753 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1756 #if FF_API_LAVF_AVCTX
1757 update_stream_avctx(s);
1760 if (s->debug & FF_FDEBUG_TS)
1761 av_log(s, AV_LOG_DEBUG,
1762 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1763 "size=%d, duration=%"PRId64", flags=%d\n",
1765 av_ts2str(pkt->pts),
1766 av_ts2str(pkt->dts),
1767 pkt->size, pkt->duration, pkt->flags);
1769 /* A demuxer might have returned EOF because of an IO error, let's
1770 * propagate this back to the user. */
1771 if (ret == AVERROR_EOF && s->pb && s->pb->error < 0 && s->pb->error != AVERROR(EAGAIN))
1777 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1779 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1785 ret = s->internal->packet_buffer
1786 ? ff_packet_list_get(&s->internal->packet_buffer,
1787 &s->internal->packet_buffer_end, pkt)
1788 : read_frame_internal(s, pkt);
1795 AVPacketList *pktl = s->internal->packet_buffer;
1798 AVPacket *next_pkt = &pktl->pkt;
1800 if (next_pkt->dts != AV_NOPTS_VALUE) {
1801 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1802 // last dts seen for this stream. if any of packets following
1803 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1804 int64_t last_dts = next_pkt->dts;
1805 av_assert2(wrap_bits <= 64);
1806 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1807 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1808 av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2ULL << (wrap_bits - 1)) < 0) {
1809 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2ULL << (wrap_bits - 1))) {
1811 next_pkt->pts = pktl->pkt.dts;
1813 if (last_dts != AV_NOPTS_VALUE) {
1814 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1815 last_dts = pktl->pkt.dts;
1820 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1821 // Fixing the last reference frame had none pts issue (For MXF etc).
1822 // We only do this when
1824 // 2. we are not able to resolve a pts value for current packet.
1825 // 3. the packets for this stream at the end of the files had valid dts.
1826 next_pkt->pts = last_dts + next_pkt->duration;
1828 pktl = s->internal->packet_buffer;
1831 /* read packet from packet buffer, if there is data */
1832 st = s->streams[next_pkt->stream_index];
1833 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1834 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1835 ret = ff_packet_list_get(&s->internal->packet_buffer,
1836 &s->internal->packet_buffer_end, pkt);
1841 ret = read_frame_internal(s, pkt);
1843 if (pktl && ret != AVERROR(EAGAIN)) {
1850 ret = ff_packet_list_put(&s->internal->packet_buffer,
1851 &s->internal->packet_buffer_end,
1854 av_packet_unref(pkt);
1861 st = s->streams[pkt->stream_index];
1862 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1863 ff_reduce_index(s, st->index);
1864 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1867 if (is_relative(pkt->dts))
1868 pkt->dts -= RELATIVE_TS_BASE;
1869 if (is_relative(pkt->pts))
1870 pkt->pts -= RELATIVE_TS_BASE;
1875 /* XXX: suppress the packet queue */
1876 static void flush_packet_queue(AVFormatContext *s)
1880 ff_packet_list_free(&s->internal->parse_queue, &s->internal->parse_queue_end);
1881 ff_packet_list_free(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1882 ff_packet_list_free(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1884 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1887 /*******************************************************/
1890 int av_find_default_stream_index(AVFormatContext *s)
1894 int best_stream = 0;
1895 int best_score = INT_MIN;
1897 if (s->nb_streams <= 0)
1899 for (i = 0; i < s->nb_streams; i++) {
1902 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1903 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1905 if (st->codecpar->width && st->codecpar->height)
1909 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1910 if (st->codecpar->sample_rate)
1913 if (st->codec_info_nb_frames)
1916 if (st->discard != AVDISCARD_ALL)
1919 if (score > best_score) {
1927 /** Flush the frame reader. */
1928 void ff_read_frame_flush(AVFormatContext *s)
1933 flush_packet_queue(s);
1935 /* Reset read state for each stream. */
1936 for (i = 0; i < s->nb_streams; i++) {
1940 av_parser_close(st->parser);
1943 st->last_IP_pts = AV_NOPTS_VALUE;
1944 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1945 if (st->first_dts == AV_NOPTS_VALUE)
1946 st->cur_dts = RELATIVE_TS_BASE;
1948 /* We set the current DTS to an unspecified origin. */
1949 st->cur_dts = AV_NOPTS_VALUE;
1951 st->probe_packets = MAX_PROBE_PACKETS;
1953 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1954 st->pts_buffer[j] = AV_NOPTS_VALUE;
1956 if (s->internal->inject_global_side_data)
1957 st->inject_global_side_data = 1;
1959 st->skip_samples = 0;
1963 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1967 for (i = 0; i < s->nb_streams; i++) {
1968 AVStream *st = s->streams[i];
1971 av_rescale(timestamp,
1972 st->time_base.den * (int64_t) ref_st->time_base.num,
1973 st->time_base.num * (int64_t) ref_st->time_base.den);
1977 void ff_reduce_index(AVFormatContext *s, int stream_index)
1979 AVStream *st = s->streams[stream_index];
1980 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1982 if ((unsigned) st->nb_index_entries >= max_entries) {
1984 for (i = 0; 2 * i < st->nb_index_entries; i++)
1985 st->index_entries[i] = st->index_entries[2 * i];
1986 st->nb_index_entries = i;
1990 int ff_add_index_entry(AVIndexEntry **index_entries,
1991 int *nb_index_entries,
1992 unsigned int *index_entries_allocated_size,
1993 int64_t pos, int64_t timestamp,
1994 int size, int distance, int flags)
1996 AVIndexEntry *entries, *ie;
1999 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
2002 if (timestamp == AV_NOPTS_VALUE)
2003 return AVERROR(EINVAL);
2005 if (size < 0 || size > 0x3FFFFFFF)
2006 return AVERROR(EINVAL);
2008 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
2009 timestamp -= RELATIVE_TS_BASE;
2011 entries = av_fast_realloc(*index_entries,
2012 index_entries_allocated_size,
2013 (*nb_index_entries + 1) *
2014 sizeof(AVIndexEntry));
2018 *index_entries = entries;
2020 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
2021 timestamp, AVSEEK_FLAG_ANY);
2024 index = (*nb_index_entries)++;
2025 ie = &entries[index];
2026 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
2028 ie = &entries[index];
2029 if (ie->timestamp != timestamp) {
2030 if (ie->timestamp <= timestamp)
2032 memmove(entries + index + 1, entries + index,
2033 sizeof(AVIndexEntry) * (*nb_index_entries - index));
2034 (*nb_index_entries)++;
2035 } else if (ie->pos == pos && distance < ie->min_distance)
2036 // do not reduce the distance
2037 distance = ie->min_distance;
2041 ie->timestamp = timestamp;
2042 ie->min_distance = distance;
2049 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
2050 int size, int distance, int flags)
2052 timestamp = wrap_timestamp(st, timestamp);
2053 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
2054 &st->index_entries_allocated_size, pos,
2055 timestamp, size, distance, flags);
2058 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
2059 int64_t wanted_timestamp, int flags)
2067 // Optimize appending index entries at the end.
2068 if (b && entries[b - 1].timestamp < wanted_timestamp)
2074 // Search for the next non-discarded packet.
2075 while ((entries[m].flags & AVINDEX_DISCARD_FRAME) && m < b && m < nb_entries - 1) {
2077 if (m == b && entries[m].timestamp >= wanted_timestamp) {
2083 timestamp = entries[m].timestamp;
2084 if (timestamp >= wanted_timestamp)
2086 if (timestamp <= wanted_timestamp)
2089 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
2091 if (!(flags & AVSEEK_FLAG_ANY))
2092 while (m >= 0 && m < nb_entries &&
2093 !(entries[m].flags & AVINDEX_KEYFRAME))
2094 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
2096 if (m == nb_entries)
2101 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
2104 int64_t pos_delta = 0;
2106 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
2107 const char *proto = avio_find_protocol_name(s->url);
2110 av_log(s, AV_LOG_INFO,
2111 "Protocol name not provided, cannot determine if input is local or "
2112 "a network protocol, buffers and access patterns cannot be configured "
2113 "optimally without knowing the protocol\n");
2116 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
2119 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
2120 AVStream *st1 = s->streams[ist1];
2121 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
2122 AVStream *st2 = s->streams[ist2];
2128 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
2129 AVIndexEntry *e1 = &st1->index_entries[i1];
2130 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
2132 skip = FFMAX(skip, e1->size);
2133 for (; i2 < st2->nb_index_entries; i2++) {
2134 AVIndexEntry *e2 = &st2->index_entries[i2];
2135 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
2136 if (e2_pts - e1_pts < time_tolerance)
2138 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2146 /* XXX This could be adjusted depending on protocol*/
2147 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2148 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2150 /* realloc the buffer and the original data will be retained */
2151 if (ffio_realloc_buf(s->pb, pos_delta)) {
2152 av_log(s, AV_LOG_ERROR, "Realloc buffer fail.\n");
2156 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2159 if (skip < (1<<23)) {
2160 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2164 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2166 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2167 wanted_timestamp, flags);
2170 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2171 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2173 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2174 if (stream_index >= 0)
2175 ts = wrap_timestamp(s->streams[stream_index], ts);
2179 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2180 int64_t target_ts, int flags)
2182 const AVInputFormat *avif = s->iformat;
2183 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2184 int64_t ts_min, ts_max, ts;
2189 if (stream_index < 0)
2192 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2195 ts_min = AV_NOPTS_VALUE;
2196 pos_limit = -1; // GCC falsely says it may be uninitialized.
2198 st = s->streams[stream_index];
2199 if (st->index_entries) {
2202 /* FIXME: Whole function must be checked for non-keyframe entries in
2203 * index case, especially read_timestamp(). */
2204 index = av_index_search_timestamp(st, target_ts,
2205 flags | AVSEEK_FLAG_BACKWARD);
2206 index = FFMAX(index, 0);
2207 e = &st->index_entries[index];
2209 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2211 ts_min = e->timestamp;
2212 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2213 pos_min, av_ts2str(ts_min));
2215 av_assert1(index == 0);
2218 index = av_index_search_timestamp(st, target_ts,
2219 flags & ~AVSEEK_FLAG_BACKWARD);
2220 av_assert0(index < st->nb_index_entries);
2222 e = &st->index_entries[index];
2223 av_assert1(e->timestamp >= target_ts);
2225 ts_max = e->timestamp;
2226 pos_limit = pos_max - e->min_distance;
2227 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2228 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2232 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2233 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2238 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2241 ff_read_frame_flush(s);
2242 ff_update_cur_dts(s, st, ts);
2247 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2248 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2250 int64_t step = 1024;
2251 int64_t limit, ts_max;
2252 int64_t filesize = avio_size(s->pb);
2253 int64_t pos_max = filesize - 1;
2256 pos_max = FFMAX(0, (pos_max) - step);
2257 ts_max = ff_read_timestamp(s, stream_index,
2258 &pos_max, limit, read_timestamp);
2260 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2261 if (ts_max == AV_NOPTS_VALUE)
2265 int64_t tmp_pos = pos_max + 1;
2266 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2267 &tmp_pos, INT64_MAX, read_timestamp);
2268 if (tmp_ts == AV_NOPTS_VALUE)
2270 av_assert0(tmp_pos > pos_max);
2273 if (tmp_pos >= filesize)
2285 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2286 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2287 int64_t ts_min, int64_t ts_max,
2288 int flags, int64_t *ts_ret,
2289 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2290 int64_t *, int64_t))
2297 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2299 if (ts_min == AV_NOPTS_VALUE) {
2300 pos_min = s->internal->data_offset;
2301 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2302 if (ts_min == AV_NOPTS_VALUE)
2306 if (ts_min >= target_ts) {
2311 if (ts_max == AV_NOPTS_VALUE) {
2312 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2314 pos_limit = pos_max;
2317 if (ts_max <= target_ts) {
2322 av_assert0(ts_min < ts_max);
2325 while (pos_min < pos_limit) {
2326 av_log(s, AV_LOG_TRACE,
2327 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2328 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2329 av_assert0(pos_limit <= pos_max);
2331 if (no_change == 0) {
2332 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2333 // interpolate position (better than dichotomy)
2334 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2336 pos_min - approximate_keyframe_distance;
2337 } else if (no_change == 1) {
2338 // bisection if interpolation did not change min / max pos last time
2339 pos = (pos_min + pos_limit) >> 1;
2341 /* linear search if bisection failed, can only happen if there
2342 * are very few or no keyframes between min/max */
2347 else if (pos > pos_limit)
2351 // May pass pos_limit instead of -1.
2352 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2357 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2358 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2359 pos_min, pos, pos_max,
2360 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2361 pos_limit, start_pos, no_change);
2362 if (ts == AV_NOPTS_VALUE) {
2363 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2366 if (target_ts <= ts) {
2367 pos_limit = start_pos - 1;
2371 if (target_ts >= ts) {
2377 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2378 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2381 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2383 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2384 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2385 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2391 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2392 int64_t pos, int flags)
2394 int64_t pos_min, pos_max;
2396 pos_min = s->internal->data_offset;
2397 pos_max = avio_size(s->pb) - 1;
2401 else if (pos > pos_max)
2404 avio_seek(s->pb, pos, SEEK_SET);
2406 s->io_repositioned = 1;
2411 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2412 int64_t timestamp, int flags)
2419 st = s->streams[stream_index];
2421 index = av_index_search_timestamp(st, timestamp, flags);
2423 if (index < 0 && st->nb_index_entries &&
2424 timestamp < st->index_entries[0].timestamp)
2427 if (index < 0 || index == st->nb_index_entries - 1) {
2431 if (st->nb_index_entries) {
2432 av_assert0(st->index_entries);
2433 ie = &st->index_entries[st->nb_index_entries - 1];
2434 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2436 ff_update_cur_dts(s, st, ie->timestamp);
2438 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2444 read_status = av_read_frame(s, &pkt);
2445 } while (read_status == AVERROR(EAGAIN));
2446 if (read_status < 0)
2448 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2449 if (pkt.flags & AV_PKT_FLAG_KEY) {
2450 av_packet_unref(&pkt);
2453 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2454 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);
2455 av_packet_unref(&pkt);
2459 av_packet_unref(&pkt);
2461 index = av_index_search_timestamp(st, timestamp, flags);
2466 ff_read_frame_flush(s);
2467 if (s->iformat->read_seek)
2468 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2470 ie = &st->index_entries[index];
2471 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2473 ff_update_cur_dts(s, st, ie->timestamp);
2478 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2479 int64_t timestamp, int flags)
2484 if (flags & AVSEEK_FLAG_BYTE) {
2485 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2487 ff_read_frame_flush(s);
2488 return seek_frame_byte(s, stream_index, timestamp, flags);
2491 if (stream_index < 0) {
2492 stream_index = av_find_default_stream_index(s);
2493 if (stream_index < 0)
2496 st = s->streams[stream_index];
2497 /* timestamp for default must be expressed in AV_TIME_BASE units */
2498 timestamp = av_rescale(timestamp, st->time_base.den,
2499 AV_TIME_BASE * (int64_t) st->time_base.num);
2502 /* first, we try the format specific seek */
2503 if (s->iformat->read_seek) {
2504 ff_read_frame_flush(s);
2505 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2511 if (s->iformat->read_timestamp &&
2512 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2513 ff_read_frame_flush(s);
2514 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2515 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2516 ff_read_frame_flush(s);
2517 return seek_frame_generic(s, stream_index, timestamp, flags);
2522 int av_seek_frame(AVFormatContext *s, int stream_index,
2523 int64_t timestamp, int flags)
2527 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2528 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2529 if ((flags & AVSEEK_FLAG_BACKWARD))
2533 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2534 flags & ~AVSEEK_FLAG_BACKWARD);
2537 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2540 ret = avformat_queue_attached_pictures(s);
2545 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2546 int64_t ts, int64_t max_ts, int flags)
2548 if (min_ts > ts || max_ts < ts)
2550 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2551 return AVERROR(EINVAL);
2554 flags |= AVSEEK_FLAG_ANY;
2555 flags &= ~AVSEEK_FLAG_BACKWARD;
2557 if (s->iformat->read_seek2) {
2559 ff_read_frame_flush(s);
2561 if (stream_index == -1 && s->nb_streams == 1) {
2562 AVRational time_base = s->streams[0]->time_base;
2563 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2564 min_ts = av_rescale_rnd(min_ts, time_base.den,
2565 time_base.num * (int64_t)AV_TIME_BASE,
2566 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2567 max_ts = av_rescale_rnd(max_ts, time_base.den,
2568 time_base.num * (int64_t)AV_TIME_BASE,
2569 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2573 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2577 ret = avformat_queue_attached_pictures(s);
2581 if (s->iformat->read_timestamp) {
2582 // try to seek via read_timestamp()
2585 // Fall back on old API if new is not implemented but old is.
2586 // Note the old API has somewhat different semantics.
2587 if (s->iformat->read_seek || 1) {
2588 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2589 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2590 if (ret<0 && ts != min_ts && max_ts != ts) {
2591 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2593 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2598 // try some generic seek like seek_frame_generic() but with new ts semantics
2599 return -1; //unreachable
2602 int avformat_flush(AVFormatContext *s)
2604 ff_read_frame_flush(s);
2608 /*******************************************************/
2611 * Return TRUE if the stream has accurate duration in any stream.
2613 * @return TRUE if the stream has accurate duration for at least one component.
2615 static int has_duration(AVFormatContext *ic)
2620 for (i = 0; i < ic->nb_streams; i++) {
2621 st = ic->streams[i];
2622 if (st->duration != AV_NOPTS_VALUE)
2625 if (ic->duration != AV_NOPTS_VALUE)
2631 * Estimate the stream timings from the one of each components.
2633 * Also computes the global bitrate if possible.
2635 static void update_stream_timings(AVFormatContext *ic)
2637 int64_t start_time, start_time1, start_time_text, end_time, end_time1, end_time_text;
2638 int64_t duration, duration1, duration_text, filesize;
2642 start_time = INT64_MAX;
2643 start_time_text = INT64_MAX;
2644 end_time = INT64_MIN;
2645 end_time_text = INT64_MIN;
2646 duration = INT64_MIN;
2647 duration_text = INT64_MIN;
2649 for (i = 0; i < ic->nb_streams; i++) {
2650 AVStream *st = ic->streams[i];
2651 int is_text = st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ||
2652 st->codecpar->codec_type == AVMEDIA_TYPE_DATA;
2653 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2654 start_time1 = av_rescale_q(st->start_time, st->time_base,
2657 start_time_text = FFMIN(start_time_text, start_time1);
2659 start_time = FFMIN(start_time, start_time1);
2660 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2662 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2663 if (end_time1 != AV_NOPTS_VALUE && (end_time1 > 0 ? start_time1 <= INT64_MAX - end_time1 : start_time1 >= INT64_MIN - end_time1)) {
2664 end_time1 += start_time1;
2666 end_time_text = FFMAX(end_time_text, end_time1);
2668 end_time = FFMAX(end_time, end_time1);
2670 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2671 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2672 p->start_time = start_time1;
2673 if (p->end_time < end_time1)
2674 p->end_time = end_time1;
2677 if (st->duration != AV_NOPTS_VALUE) {
2678 duration1 = av_rescale_q(st->duration, st->time_base,
2681 duration_text = FFMAX(duration_text, duration1);
2683 duration = FFMAX(duration, duration1);
2686 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - (uint64_t)start_time_text < AV_TIME_BASE))
2687 start_time = start_time_text;
2688 else if (start_time > start_time_text)
2689 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2691 if (end_time == INT64_MIN || (end_time < end_time_text && end_time_text - (uint64_t)end_time < AV_TIME_BASE))
2692 end_time = end_time_text;
2693 else if (end_time < end_time_text)
2694 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream endtime %f\n", end_time_text / (float)AV_TIME_BASE);
2696 if (duration == INT64_MIN || (duration < duration_text && duration_text - duration < AV_TIME_BASE))
2697 duration = duration_text;
2698 else if (duration < duration_text)
2699 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream duration %f\n", duration_text / (float)AV_TIME_BASE);
2701 if (start_time != INT64_MAX) {
2702 ic->start_time = start_time;
2703 if (end_time != INT64_MIN) {
2704 if (ic->nb_programs > 1) {
2705 for (i = 0; i < ic->nb_programs; i++) {
2706 p = ic->programs[i];
2707 if (p->start_time != AV_NOPTS_VALUE &&
2708 p->end_time > p->start_time &&
2709 p->end_time - (uint64_t)p->start_time <= INT64_MAX)
2710 duration = FFMAX(duration, p->end_time - p->start_time);
2712 } else if (end_time >= start_time && end_time - (uint64_t)start_time <= INT64_MAX) {
2713 duration = FFMAX(duration, end_time - start_time);
2717 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2718 ic->duration = duration;
2720 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2721 /* compute the bitrate */
2722 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2723 (double) ic->duration;
2724 if (bitrate >= 0 && bitrate <= INT64_MAX)
2725 ic->bit_rate = bitrate;
2729 static void fill_all_stream_timings(AVFormatContext *ic)
2734 update_stream_timings(ic);
2735 for (i = 0; i < ic->nb_streams; i++) {
2736 st = ic->streams[i];
2737 if (st->start_time == AV_NOPTS_VALUE) {
2738 if (ic->start_time != AV_NOPTS_VALUE)
2739 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2741 if (ic->duration != AV_NOPTS_VALUE)
2742 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2748 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2750 int64_t filesize, duration;
2751 int i, show_warning = 0;
2754 /* if bit_rate is already set, we believe it */
2755 if (ic->bit_rate <= 0) {
2756 int64_t bit_rate = 0;
2757 for (i = 0; i < ic->nb_streams; i++) {
2758 st = ic->streams[i];
2759 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2760 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2761 if (st->codecpar->bit_rate > 0) {
2762 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2766 bit_rate += st->codecpar->bit_rate;
2767 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2768 // If we have a videostream with packets but without a bitrate
2769 // then consider the sum not known
2774 ic->bit_rate = bit_rate;
2777 /* if duration is already set, we believe it */
2778 if (ic->duration == AV_NOPTS_VALUE &&
2779 ic->bit_rate != 0) {
2780 filesize = ic->pb ? avio_size(ic->pb) : 0;
2781 if (filesize > ic->internal->data_offset) {
2782 filesize -= ic->internal->data_offset;
2783 for (i = 0; i < ic->nb_streams; i++) {
2784 st = ic->streams[i];
2785 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2786 && st->duration == AV_NOPTS_VALUE) {
2787 duration = av_rescale(8 * filesize, st->time_base.den,
2789 (int64_t) st->time_base.num);
2790 st->duration = duration;
2797 av_log(ic, AV_LOG_WARNING,
2798 "Estimating duration from bitrate, this may be inaccurate\n");
2801 #define DURATION_MAX_READ_SIZE 250000LL
2802 #define DURATION_MAX_RETRY 6
2804 /* only usable for MPEG-PS streams */
2805 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2807 AVPacket pkt1, *pkt = &pkt1;
2809 int num, den, read_size, i, ret;
2810 int found_duration = 0;
2812 int64_t filesize, offset, duration;
2815 /* flush packet queue */
2816 flush_packet_queue(ic);
2818 for (i = 0; i < ic->nb_streams; i++) {
2819 st = ic->streams[i];
2820 if (st->start_time == AV_NOPTS_VALUE &&
2821 st->first_dts == AV_NOPTS_VALUE &&
2822 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2823 av_log(ic, AV_LOG_WARNING,
2824 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2827 av_parser_close(st->parser);
2832 if (ic->skip_estimate_duration_from_pts) {
2833 av_log(ic, AV_LOG_INFO, "Skipping duration calculation in estimate_timings_from_pts\n");
2834 goto skip_duration_calc;
2837 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2838 /* estimate the end time (duration) */
2839 /* XXX: may need to support wrapping */
2840 filesize = ic->pb ? avio_size(ic->pb) : 0;
2842 is_end = found_duration;
2843 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2847 avio_seek(ic->pb, offset, SEEK_SET);
2850 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2854 ret = ff_read_packet(ic, pkt);
2855 } while (ret == AVERROR(EAGAIN));
2858 read_size += pkt->size;
2859 st = ic->streams[pkt->stream_index];
2860 if (pkt->pts != AV_NOPTS_VALUE &&
2861 (st->start_time != AV_NOPTS_VALUE ||
2862 st->first_dts != AV_NOPTS_VALUE)) {
2863 if (pkt->duration == 0) {
2864 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2866 pkt->duration = av_rescale_rnd(1,
2867 num * (int64_t) st->time_base.den,
2868 den * (int64_t) st->time_base.num,
2872 duration = pkt->pts + pkt->duration;
2874 if (st->start_time != AV_NOPTS_VALUE)
2875 duration -= st->start_time;
2877 duration -= st->first_dts;
2879 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2880 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2881 st->duration = duration;
2882 st->info->last_duration = duration;
2885 av_packet_unref(pkt);
2888 /* check if all audio/video streams have valid duration */
2891 for (i = 0; i < ic->nb_streams; i++) {
2892 st = ic->streams[i];
2893 switch (st->codecpar->codec_type) {
2894 case AVMEDIA_TYPE_VIDEO:
2895 case AVMEDIA_TYPE_AUDIO:
2896 if (st->duration == AV_NOPTS_VALUE)
2903 ++retry <= DURATION_MAX_RETRY);
2905 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2907 /* warn about audio/video streams which duration could not be estimated */
2908 for (i = 0; i < ic->nb_streams; i++) {
2909 st = ic->streams[i];
2910 if (st->duration == AV_NOPTS_VALUE) {
2911 switch (st->codecpar->codec_type) {
2912 case AVMEDIA_TYPE_VIDEO:
2913 case AVMEDIA_TYPE_AUDIO:
2914 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2915 av_log(ic, AV_LOG_WARNING, "stream %d : no PTS found at end of file, duration not set\n", i);
2917 av_log(ic, AV_LOG_WARNING, "stream %d : no TS found at start of file, duration not set\n", i);
2922 fill_all_stream_timings(ic);
2924 avio_seek(ic->pb, old_offset, SEEK_SET);
2925 for (i = 0; i < ic->nb_streams; i++) {
2928 st = ic->streams[i];
2929 st->cur_dts = st->first_dts;
2930 st->last_IP_pts = AV_NOPTS_VALUE;
2931 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2932 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2933 st->pts_buffer[j] = AV_NOPTS_VALUE;
2937 /* 1:1 map to AVDurationEstimationMethod */
2938 static const char *duration_name[] = {
2939 [AVFMT_DURATION_FROM_PTS] = "pts",
2940 [AVFMT_DURATION_FROM_STREAM] = "stream",
2941 [AVFMT_DURATION_FROM_BITRATE] = "bit rate",
2944 static const char *duration_estimate_name(enum AVDurationEstimationMethod method)
2946 return duration_name[method];
2949 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2953 /* get the file size, if possible */
2954 if (ic->iformat->flags & AVFMT_NOFILE) {
2957 file_size = avio_size(ic->pb);
2958 file_size = FFMAX(0, file_size);
2961 if ((!strcmp(ic->iformat->name, "mpeg") ||
2962 !strcmp(ic->iformat->name, "mpegts")) &&
2963 file_size && (ic->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
2964 /* get accurate estimate from the PTSes */
2965 estimate_timings_from_pts(ic, old_offset);
2966 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2967 } else if (has_duration(ic)) {
2968 /* at least one component has timings - we use them for all
2970 fill_all_stream_timings(ic);
2971 /* nut demuxer estimate the duration from PTS */
2972 if(!strcmp(ic->iformat->name, "nut"))
2973 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2975 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2977 /* less precise: use bitrate info */
2978 estimate_timings_from_bit_rate(ic);
2979 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2981 update_stream_timings(ic);
2985 AVStream av_unused *st;
2986 for (i = 0; i < ic->nb_streams; i++) {
2987 st = ic->streams[i];
2988 if (st->time_base.den)
2989 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2990 (double) st->start_time * av_q2d(st->time_base),
2991 (double) st->duration * av_q2d(st->time_base));
2993 av_log(ic, AV_LOG_TRACE,
2994 "format: start_time: %0.3f duration: %0.3f (estimate from %s) bitrate=%"PRId64" kb/s\n",
2995 (double) ic->start_time / AV_TIME_BASE,
2996 (double) ic->duration / AV_TIME_BASE,
2997 duration_estimate_name(ic->duration_estimation_method),
2998 (int64_t)ic->bit_rate / 1000);
3002 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
3004 AVCodecContext *avctx = st->internal->avctx;
3006 #define FAIL(errmsg) do { \
3008 *errmsg_ptr = errmsg; \
3012 if ( avctx->codec_id == AV_CODEC_ID_NONE
3013 && avctx->codec_type != AVMEDIA_TYPE_DATA)
3014 FAIL("unknown codec");
3015 switch (avctx->codec_type) {
3016 case AVMEDIA_TYPE_AUDIO:
3017 if (!avctx->frame_size && determinable_frame_size(avctx))
3018 FAIL("unspecified frame size");
3019 if (st->info->found_decoder >= 0 &&
3020 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
3021 FAIL("unspecified sample format");
3022 if (!avctx->sample_rate)
3023 FAIL("unspecified sample rate");
3024 if (!avctx->channels)
3025 FAIL("unspecified number of channels");
3026 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
3027 FAIL("no decodable DTS frames");
3029 case AVMEDIA_TYPE_VIDEO:
3031 FAIL("unspecified size");
3032 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
3033 FAIL("unspecified pixel format");
3034 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
3035 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
3036 FAIL("no frame in rv30/40 and no sar");
3038 case AVMEDIA_TYPE_SUBTITLE:
3039 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
3040 FAIL("unspecified size");
3042 case AVMEDIA_TYPE_DATA:
3043 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
3049 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
3050 static int try_decode_frame(AVFormatContext *s, AVStream *st,
3051 const AVPacket *avpkt, AVDictionary **options)
3053 AVCodecContext *avctx = st->internal->avctx;
3054 const AVCodec *codec;
3055 int got_picture = 1, ret = 0;
3056 AVFrame *frame = av_frame_alloc();
3057 AVSubtitle subtitle;
3058 AVPacket pkt = *avpkt;
3059 int do_skip_frame = 0;
3060 enum AVDiscard skip_frame;
3063 return AVERROR(ENOMEM);
3065 if (!avcodec_is_open(avctx) &&
3066 st->info->found_decoder <= 0 &&
3067 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
3068 AVDictionary *thread_opt = NULL;
3070 codec = find_probe_decoder(s, st, st->codecpar->codec_id);
3073 st->info->found_decoder = -st->codecpar->codec_id;
3078 /* Force thread count to 1 since the H.264 decoder will not extract
3079 * SPS and PPS to extradata during multi-threaded decoding. */
3080 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
3081 if (s->codec_whitelist)
3082 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
3083 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
3085 av_dict_free(&thread_opt);
3087 st->info->found_decoder = -avctx->codec_id;
3090 st->info->found_decoder = 1;
3091 } else if (!st->info->found_decoder)
3092 st->info->found_decoder = 1;
3094 if (st->info->found_decoder < 0) {
3099 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
3101 skip_frame = avctx->skip_frame;
3102 avctx->skip_frame = AVDISCARD_ALL;
3105 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
3107 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
3108 (!st->codec_info_nb_frames &&
3109 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
3111 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
3112 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3113 ret = avcodec_send_packet(avctx, &pkt);
3114 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3118 ret = avcodec_receive_frame(avctx, frame);
3121 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
3123 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3124 ret = avcodec_decode_subtitle2(avctx, &subtitle,
3125 &got_picture, &pkt);
3131 st->nb_decoded_frames++;
3136 if (!pkt.data && !got_picture)
3140 if (do_skip_frame) {
3141 avctx->skip_frame = skip_frame;
3144 av_frame_free(&frame);
3148 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
3150 while (tags->id != AV_CODEC_ID_NONE) {
3158 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
3161 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3162 if (tag == tags[i].tag)
3164 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
3165 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
3167 return AV_CODEC_ID_NONE;
3170 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
3172 if (bps <= 0 || bps > 64)
3173 return AV_CODEC_ID_NONE;
3178 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
3180 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
3182 return AV_CODEC_ID_NONE;
3187 if (sflags & (1 << (bps - 1))) {
3190 return AV_CODEC_ID_PCM_S8;
3192 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
3194 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3196 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3198 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3200 return AV_CODEC_ID_NONE;
3205 return AV_CODEC_ID_PCM_U8;
3207 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3209 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3211 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3213 return AV_CODEC_ID_NONE;
3219 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3222 if (!av_codec_get_tag2(tags, id, &tag))
3227 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3231 for (i = 0; tags && tags[i]; i++) {
3232 const AVCodecTag *codec_tags = tags[i];
3233 while (codec_tags->id != AV_CODEC_ID_NONE) {
3234 if (codec_tags->id == id) {
3235 *tag = codec_tags->tag;
3244 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3247 for (i = 0; tags && tags[i]; i++) {
3248 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3249 if (id != AV_CODEC_ID_NONE)
3252 return AV_CODEC_ID_NONE;
3255 static void compute_chapters_end(AVFormatContext *s)
3258 int64_t max_time = 0;
3260 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3261 max_time = s->duration +
3262 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3264 for (i = 0; i < s->nb_chapters; i++)
3265 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3266 AVChapter *ch = s->chapters[i];
3267 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3271 for (j = 0; j < s->nb_chapters; j++) {
3272 AVChapter *ch1 = s->chapters[j];
3273 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3275 if (j != i && next_start > ch->start && next_start < end)
3278 ch->end = (end == INT64_MAX || end < ch->start) ? ch->start : end;
3282 static int get_std_framerate(int i)
3285 return (i + 1) * 1001;
3289 return (i + 31) * 1001 * 12;
3293 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3297 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3300 /* Is the time base unreliable?
3301 * This is a heuristic to balance between quick acceptance of the values in
3302 * the headers vs. some extra checks.
3303 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3304 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3305 * And there are "variable" fps files this needs to detect as well. */
3306 static int tb_unreliable(AVCodecContext *c)
3308 if (c->time_base.den >= 101LL * c->time_base.num ||
3309 c->time_base.den < 5LL * c->time_base.num ||
3310 // c->codec_tag == AV_RL32("DIVX") ||
3311 // c->codec_tag == AV_RL32("XVID") ||
3312 c->codec_tag == AV_RL32("mp4v") ||
3313 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3314 c->codec_id == AV_CODEC_ID_GIF ||
3315 c->codec_id == AV_CODEC_ID_HEVC ||
3316 c->codec_id == AV_CODEC_ID_H264)
3321 int ff_alloc_extradata(AVCodecParameters *par, int size)
3323 av_freep(&par->extradata);
3324 par->extradata_size = 0;
3326 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
3327 return AVERROR(EINVAL);
3329 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3330 if (!par->extradata)
3331 return AVERROR(ENOMEM);
3333 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3334 par->extradata_size = size;
3339 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3341 int ret = ff_alloc_extradata(par, size);
3344 ret = avio_read(pb, par->extradata, size);
3346 av_freep(&par->extradata);
3347 par->extradata_size = 0;
3348 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3349 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3355 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3358 int64_t last = st->info->last_dts;
3360 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3361 && ts - (uint64_t)last < INT64_MAX) {
3362 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3363 int64_t duration = ts - last;
3365 if (!st->info->duration_error)
3366 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3367 if (!st->info->duration_error)
3368 return AVERROR(ENOMEM);
3370 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3371 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3372 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3373 if (st->info->duration_error[0][1][i] < 1e10) {
3374 int framerate = get_std_framerate(i);
3375 double sdts = dts*framerate/(1001*12);
3376 for (j= 0; j<2; j++) {
3377 int64_t ticks = llrint(sdts+j*0.5);
3378 double error= sdts - ticks + j*0.5;
3379 st->info->duration_error[j][0][i] += error;
3380 st->info->duration_error[j][1][i] += error*error;
3384 if (st->info->rfps_duration_sum <= INT64_MAX - duration) {
3385 st->info->duration_count++;
3386 st->info->rfps_duration_sum += duration;
3389 if (st->info->duration_count % 10 == 0) {
3390 int n = st->info->duration_count;
3391 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3392 if (st->info->duration_error[0][1][i] < 1e10) {
3393 double a0 = st->info->duration_error[0][0][i] / n;
3394 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3395 double a1 = st->info->duration_error[1][0][i] / n;
3396 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3397 if (error0 > 0.04 && error1 > 0.04) {
3398 st->info->duration_error[0][1][i] = 2e10;
3399 st->info->duration_error[1][1][i] = 2e10;
3405 // ignore the first 4 values, they might have some random jitter
3406 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3407 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3409 if (ts != AV_NOPTS_VALUE)
3410 st->info->last_dts = ts;
3415 void ff_rfps_calculate(AVFormatContext *ic)
3419 for (i = 0; i < ic->nb_streams; i++) {
3420 AVStream *st = ic->streams[i];
3422 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3424 // the check for tb_unreliable() is not completely correct, since this is not about handling
3425 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3426 // ipmovie.c produces.
3427 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)
3428 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);
3429 if (st->info->duration_count>1 && !st->r_frame_rate.num
3430 && tb_unreliable(st->internal->avctx)) {
3432 double best_error= 0.01;
3433 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3435 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3438 if (st->info->codec_info_duration &&
3439 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3441 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3444 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3447 for (k= 0; k<2; k++) {
3448 int n = st->info->duration_count;
3449 double a= st->info->duration_error[k][0][j] / n;
3450 double error= st->info->duration_error[k][1][j]/n - a*a;
3452 if (error < best_error && best_error> 0.000000001) {
3454 num = get_std_framerate(j);
3457 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3460 // do not increase frame rate by more than 1 % in order to match a standard rate.
3461 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3462 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3464 if ( !st->avg_frame_rate.num
3465 && st->r_frame_rate.num && st->info->rfps_duration_sum
3466 && st->info->codec_info_duration <= 0
3467 && st->info->duration_count > 2
3468 && 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
3470 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3471 st->avg_frame_rate = st->r_frame_rate;
3474 av_freep(&st->info->duration_error);
3475 st->info->last_dts = AV_NOPTS_VALUE;
3476 st->info->duration_count = 0;
3477 st->info->rfps_duration_sum = 0;
3481 static int extract_extradata_check(AVStream *st)
3483 const AVBitStreamFilter *f;
3485 f = av_bsf_get_by_name("extract_extradata");
3490 const enum AVCodecID *ids;
3491 for (ids = f->codec_ids; *ids != AV_CODEC_ID_NONE; ids++)
3492 if (*ids == st->codecpar->codec_id)
3499 static int extract_extradata_init(AVStream *st)
3501 AVStreamInternal *sti = st->internal;
3502 const AVBitStreamFilter *f;
3505 f = av_bsf_get_by_name("extract_extradata");
3509 /* check that the codec id is supported */
3510 ret = extract_extradata_check(st);
3514 sti->extract_extradata.pkt = av_packet_alloc();
3515 if (!sti->extract_extradata.pkt)
3516 return AVERROR(ENOMEM);
3518 ret = av_bsf_alloc(f, &sti->extract_extradata.bsf);
3522 ret = avcodec_parameters_copy(sti->extract_extradata.bsf->par_in,
3527 sti->extract_extradata.bsf->time_base_in = st->time_base;
3529 ret = av_bsf_init(sti->extract_extradata.bsf);
3534 sti->extract_extradata.inited = 1;
3538 av_bsf_free(&sti->extract_extradata.bsf);
3539 av_packet_free(&sti->extract_extradata.pkt);
3543 static int extract_extradata(AVStream *st, const AVPacket *pkt)
3545 AVStreamInternal *sti = st->internal;
3549 if (!sti->extract_extradata.inited) {
3550 ret = extract_extradata_init(st);
3555 if (sti->extract_extradata.inited && !sti->extract_extradata.bsf)
3558 pkt_ref = sti->extract_extradata.pkt;
3559 ret = av_packet_ref(pkt_ref, pkt);
3563 ret = av_bsf_send_packet(sti->extract_extradata.bsf, pkt_ref);
3565 av_packet_unref(pkt_ref);
3569 while (ret >= 0 && !sti->avctx->extradata) {
3573 ret = av_bsf_receive_packet(sti->extract_extradata.bsf, pkt_ref);
3575 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
3580 extradata = av_packet_get_side_data(pkt_ref, AV_PKT_DATA_NEW_EXTRADATA,
3584 av_assert0(!sti->avctx->extradata);
3585 if ((unsigned)extradata_size < FF_MAX_EXTRADATA_SIZE)
3586 sti->avctx->extradata = av_mallocz(extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
3587 if (!sti->avctx->extradata) {
3588 av_packet_unref(pkt_ref);
3589 return AVERROR(ENOMEM);
3591 memcpy(sti->avctx->extradata, extradata, extradata_size);
3592 sti->avctx->extradata_size = extradata_size;
3594 av_packet_unref(pkt_ref);
3600 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3602 int i, count = 0, ret = 0, j;
3605 AVCodecContext *avctx;
3607 int64_t old_offset = avio_tell(ic->pb);
3608 // new streams might appear, no options for those
3609 int orig_nb_streams = ic->nb_streams;
3611 int64_t max_analyze_duration = ic->max_analyze_duration;
3612 int64_t max_stream_analyze_duration;
3613 int64_t max_subtitle_analyze_duration;
3614 int64_t probesize = ic->probesize;
3615 int eof_reached = 0;
3616 int *missing_streams = av_opt_ptr(ic->iformat->priv_class, ic->priv_data, "missing_streams");
3618 flush_codecs = probesize > 0;
3620 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3622 max_stream_analyze_duration = max_analyze_duration;
3623 max_subtitle_analyze_duration = max_analyze_duration;
3624 if (!max_analyze_duration) {
3625 max_stream_analyze_duration =
3626 max_analyze_duration = 5*AV_TIME_BASE;
3627 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3628 if (!strcmp(ic->iformat->name, "flv"))
3629 max_stream_analyze_duration = 90*AV_TIME_BASE;
3630 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3631 max_stream_analyze_duration = 7*AV_TIME_BASE;
3635 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3636 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3638 for (i = 0; i < ic->nb_streams; i++) {
3639 const AVCodec *codec;
3640 AVDictionary *thread_opt = NULL;
3641 st = ic->streams[i];
3642 avctx = st->internal->avctx;
3644 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3645 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3646 /* if (!st->time_base.num)
3648 if (!avctx->time_base.num)
3649 avctx->time_base = st->time_base;
3652 /* check if the caller has overridden the codec id */
3653 #if FF_API_LAVF_AVCTX
3654 FF_DISABLE_DEPRECATION_WARNINGS
3655 if (st->codec->codec_id != st->internal->orig_codec_id) {
3656 st->codecpar->codec_id = st->codec->codec_id;
3657 st->codecpar->codec_type = st->codec->codec_type;
3658 st->internal->orig_codec_id = st->codec->codec_id;
3660 FF_ENABLE_DEPRECATION_WARNINGS
3662 // only for the split stuff
3663 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3664 st->parser = av_parser_init(st->codecpar->codec_id);
3666 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3667 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3668 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3669 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3671 } else if (st->need_parsing) {
3672 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3673 "%s, packets or times may be invalid.\n",
3674 avcodec_get_name(st->codecpar->codec_id));
3678 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3679 st->internal->orig_codec_id = st->codecpar->codec_id;
3681 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3683 goto find_stream_info_err;
3684 if (st->request_probe <= 0)
3685 st->internal->avctx_inited = 1;
3687 codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3689 /* Force thread count to 1 since the H.264 decoder will not extract
3690 * SPS and PPS to extradata during multi-threaded decoding. */
3691 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3693 if (ic->codec_whitelist)
3694 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3696 /* Ensure that subtitle_header is properly set. */
3697 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3698 && codec && !avctx->codec) {
3699 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3700 av_log(ic, AV_LOG_WARNING,
3701 "Failed to open codec in %s\n",__FUNCTION__);
3704 // Try to just open decoders, in case this is enough to get parameters.
3705 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3706 if (codec && !avctx->codec)
3707 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3708 av_log(ic, AV_LOG_WARNING,
3709 "Failed to open codec in %s\n",__FUNCTION__);
3712 av_dict_free(&thread_opt);
3715 for (i = 0; i < ic->nb_streams; i++) {
3716 #if FF_API_R_FRAME_RATE
3717 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3719 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3720 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3725 const AVPacket *pkt;
3726 int analyzed_all_streams;
3727 if (ff_check_interrupt(&ic->interrupt_callback)) {
3729 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3733 /* check if one codec still needs to be handled */
3734 for (i = 0; i < ic->nb_streams; i++) {
3735 int fps_analyze_framecount = 20;
3738 st = ic->streams[i];
3739 if (!has_codec_parameters(st, NULL))
3741 /* If the timebase is coarse (like the usual millisecond precision
3742 * of mkv), we need to analyze more frames to reliably arrive at
3743 * the correct fps. */
3744 if (av_q2d(st->time_base) > 0.0005)
3745 fps_analyze_framecount *= 2;
3746 if (!tb_unreliable(st->internal->avctx))
3747 fps_analyze_framecount = 0;
3748 if (ic->fps_probe_size >= 0)
3749 fps_analyze_framecount = ic->fps_probe_size;
3750 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3751 fps_analyze_framecount = 0;
3752 /* variable fps and no guess at the real fps */
3753 count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3754 st->info->codec_info_duration_fields/2 :
3755 st->info->duration_count;
3756 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3757 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3758 if (count < fps_analyze_framecount)
3761 // Look at the first 3 frames if there is evidence of frame delay
3762 // but the decoder delay is not set.
3763 if (st->info->frame_delay_evidence && count < 2 && st->internal->avctx->has_b_frames == 0)
3765 if (!st->internal->avctx->extradata &&
3766 (!st->internal->extract_extradata.inited ||
3767 st->internal->extract_extradata.bsf) &&
3768 extract_extradata_check(st))
3770 if (st->first_dts == AV_NOPTS_VALUE &&
3771 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3772 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3773 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3774 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3777 analyzed_all_streams = 0;
3778 if (!missing_streams || !*missing_streams)
3779 if (i == ic->nb_streams) {
3780 analyzed_all_streams = 1;
3781 /* NOTE: If the format has no header, then we need to read some
3782 * packets to get most of the streams, so we cannot stop here. */
3783 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3784 /* If we found the info for all the codecs, we can stop. */
3786 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3791 /* We did not get all the codec info, but we read too much data. */
3792 if (read_size >= probesize) {
3794 av_log(ic, AV_LOG_DEBUG,
3795 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3796 for (i = 0; i < ic->nb_streams; i++)
3797 if (!ic->streams[i]->r_frame_rate.num &&
3798 ic->streams[i]->info->duration_count <= 1 &&
3799 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3800 strcmp(ic->iformat->name, "image2"))
3801 av_log(ic, AV_LOG_WARNING,
3802 "Stream #%d: not enough frames to estimate rate; "
3803 "consider increasing probesize\n", i);
3807 /* NOTE: A new stream can be added there if no header in file
3808 * (AVFMTCTX_NOHEADER). */
3809 ret = read_frame_internal(ic, &pkt1);
3810 if (ret == AVERROR(EAGAIN))
3819 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3820 ret = ff_packet_list_put(&ic->internal->packet_buffer,
3821 &ic->internal->packet_buffer_end,
3824 goto unref_then_goto_end;
3826 pkt = &ic->internal->packet_buffer_end->pkt;
3831 st = ic->streams[pkt->stream_index];
3832 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3833 read_size += pkt->size;
3835 avctx = st->internal->avctx;
3836 if (!st->internal->avctx_inited) {
3837 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3839 goto unref_then_goto_end;
3840 st->internal->avctx_inited = 1;
3843 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3844 /* check for non-increasing dts */
3845 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3846 st->info->fps_last_dts >= pkt->dts) {
3847 av_log(ic, AV_LOG_DEBUG,
3848 "Non-increasing DTS in stream %d: packet %d with DTS "
3849 "%"PRId64", packet %d with DTS %"PRId64"\n",
3850 st->index, st->info->fps_last_dts_idx,
3851 st->info->fps_last_dts, st->codec_info_nb_frames,
3853 st->info->fps_first_dts =
3854 st->info->fps_last_dts = AV_NOPTS_VALUE;
3856 /* Check for a discontinuity in dts. If the difference in dts
3857 * is more than 1000 times the average packet duration in the
3858 * sequence, we treat it as a discontinuity. */
3859 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3860 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3861 (pkt->dts - (uint64_t)st->info->fps_last_dts) / 1000 >
3862 (st->info->fps_last_dts - (uint64_t)st->info->fps_first_dts) /
3863 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3864 av_log(ic, AV_LOG_WARNING,
3865 "DTS discontinuity in stream %d: packet %d with DTS "
3866 "%"PRId64", packet %d with DTS %"PRId64"\n",
3867 st->index, st->info->fps_last_dts_idx,
3868 st->info->fps_last_dts, st->codec_info_nb_frames,
3870 st->info->fps_first_dts =
3871 st->info->fps_last_dts = AV_NOPTS_VALUE;
3874 /* update stored dts values */
3875 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3876 st->info->fps_first_dts = pkt->dts;
3877 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3879 st->info->fps_last_dts = pkt->dts;
3880 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3882 if (st->codec_info_nb_frames>1) {
3886 if (st->time_base.den > 0)
3887 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3888 if (st->avg_frame_rate.num > 0)
3889 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3892 && st->codec_info_nb_frames>30
3893 && st->info->fps_first_dts != AV_NOPTS_VALUE
3894 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3895 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3897 if (analyzed_all_streams) limit = max_analyze_duration;
3898 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3899 else limit = max_stream_analyze_duration;
3902 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3904 t, pkt->stream_index);
3905 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3906 av_packet_unref(&pkt1);
3909 if (pkt->duration) {
3910 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3911 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3913 st->info->codec_info_duration += pkt->duration;
3914 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3917 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3918 #if FF_API_R_FRAME_RATE
3919 ff_rfps_add_frame(ic, st, pkt->dts);
3921 if (pkt->dts != pkt->pts && pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE)
3922 st->info->frame_delay_evidence = 1;
3924 if (!st->internal->avctx->extradata) {
3925 ret = extract_extradata(st, pkt);
3927 goto unref_then_goto_end;
3930 /* If still no information, we try to open the codec and to
3931 * decompress the frame. We try to avoid that in most cases as
3932 * it takes longer and uses more memory. For MPEG-4, we need to
3933 * decompress for QuickTime.
3935 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3936 * least one frame of codec data, this makes sure the codec initializes
3937 * the channel configuration and does not only trust the values from
3939 try_decode_frame(ic, st, pkt,
3940 (options && i < orig_nb_streams) ? &options[i] : NULL);
3942 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3943 av_packet_unref(&pkt1);
3945 st->codec_info_nb_frames++;
3951 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3952 st = ic->streams[stream_index];
3953 avctx = st->internal->avctx;
3954 if (!has_codec_parameters(st, NULL)) {
3955 const AVCodec *codec = find_probe_decoder(ic, st, st->codecpar->codec_id);
3956 if (codec && !avctx->codec) {
3957 AVDictionary *opts = NULL;
3958 if (ic->codec_whitelist)
3959 av_dict_set(&opts, "codec_whitelist", ic->codec_whitelist, 0);
3960 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : &opts) < 0)
3961 av_log(ic, AV_LOG_WARNING,
3962 "Failed to open codec in %s\n",__FUNCTION__);
3963 av_dict_free(&opts);
3967 // EOF already reached while reading the stream above.
3968 // So continue with reoordering DTS with whatever delay we have.
3969 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3970 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3976 AVPacket empty_pkt = { 0 };
3978 av_init_packet(&empty_pkt);
3980 for (i = 0; i < ic->nb_streams; i++) {
3982 st = ic->streams[i];
3984 /* flush the decoders */
3985 if (st->info->found_decoder == 1) {
3987 err = try_decode_frame(ic, st, &empty_pkt,
3988 (options && i < orig_nb_streams)
3989 ? &options[i] : NULL);
3990 } while (err > 0 && !has_codec_parameters(st, NULL));
3993 av_log(ic, AV_LOG_INFO,
3994 "decoding for stream %d failed\n", st->index);
4000 ff_rfps_calculate(ic);
4002 for (i = 0; i < ic->nb_streams; i++) {
4003 st = ic->streams[i];
4004 avctx = st->internal->avctx;
4005 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
4006 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
4007 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
4008 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
4009 avctx->codec_tag= tag;
4012 /* estimate average framerate if not set by demuxer */
4013 if (st->info->codec_info_duration_fields &&
4014 !st->avg_frame_rate.num &&
4015 st->info->codec_info_duration) {
4017 double best_error = 0.01;
4018 AVRational codec_frame_rate = avctx->framerate;
4020 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
4021 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
4022 st->info->codec_info_duration < 0)
4024 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4025 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
4026 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
4028 /* Round guessed framerate to a "standard" framerate if it's
4029 * within 1% of the original estimate. */
4030 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
4031 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
4032 double error = fabs(av_q2d(st->avg_frame_rate) /
4033 av_q2d(std_fps) - 1);
4035 if (error < best_error) {
4037 best_fps = std_fps.num;
4040 if (ic->internal->prefer_codec_framerate && codec_frame_rate.num > 0 && codec_frame_rate.den > 0) {
4041 error = fabs(av_q2d(codec_frame_rate) /
4042 av_q2d(std_fps) - 1);
4043 if (error < best_error) {
4045 best_fps = std_fps.num;
4050 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
4051 best_fps, 12 * 1001, INT_MAX);
4054 if (!st->r_frame_rate.num) {
4055 if ( avctx->time_base.den * (int64_t) st->time_base.num
4056 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
4057 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den,
4058 avctx->time_base.den, (int64_t)avctx->time_base.num * avctx->ticks_per_frame, INT_MAX);
4060 st->r_frame_rate.num = st->time_base.den;
4061 st->r_frame_rate.den = st->time_base.num;
4064 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
4065 AVRational hw_ratio = { avctx->height, avctx->width };
4066 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
4069 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
4070 if (!avctx->bits_per_coded_sample)
4071 avctx->bits_per_coded_sample =
4072 av_get_bits_per_sample(avctx->codec_id);
4073 // set stream disposition based on audio service type
4074 switch (avctx->audio_service_type) {
4075 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
4076 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
4078 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
4079 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
4081 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
4082 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
4084 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
4085 st->disposition = AV_DISPOSITION_COMMENT;
4087 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
4088 st->disposition = AV_DISPOSITION_KARAOKE;
4095 estimate_timings(ic, old_offset);
4097 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
4099 if (ret >= 0 && ic->nb_streams)
4100 /* We could not have all the codec parameters before EOF. */
4102 for (i = 0; i < ic->nb_streams; i++) {
4104 st = ic->streams[i];
4106 /* if no packet was ever seen, update context now for has_codec_parameters */
4107 if (!st->internal->avctx_inited) {
4108 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
4109 st->codecpar->format == AV_SAMPLE_FMT_NONE)
4110 st->codecpar->format = st->internal->avctx->sample_fmt;
4111 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
4113 goto find_stream_info_err;
4115 if (!has_codec_parameters(st, &errmsg)) {
4117 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
4118 av_log(ic, AV_LOG_WARNING,
4119 "Could not find codec parameters for stream %d (%s): %s\n"
4120 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
4127 compute_chapters_end(ic);
4129 /* update the stream parameters from the internal codec contexts */
4130 for (i = 0; i < ic->nb_streams; i++) {
4131 st = ic->streams[i];
4133 if (st->internal->avctx_inited) {
4134 int orig_w = st->codecpar->width;
4135 int orig_h = st->codecpar->height;
4136 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
4138 goto find_stream_info_err;
4140 // The decoder might reduce the video size by the lowres factor.
4141 if (st->internal->avctx->lowres && orig_w) {
4142 st->codecpar->width = orig_w;
4143 st->codecpar->height = orig_h;
4148 #if FF_API_LAVF_AVCTX
4149 FF_DISABLE_DEPRECATION_WARNINGS
4150 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
4152 goto find_stream_info_err;
4155 // The old API (AVStream.codec) "requires" the resolution to be adjusted
4156 // by the lowres factor.
4157 if (st->internal->avctx->lowres && st->internal->avctx->width) {
4158 st->codec->lowres = st->internal->avctx->lowres;
4159 st->codec->width = st->internal->avctx->width;
4160 st->codec->height = st->internal->avctx->height;
4164 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
4165 st->codec->time_base = st->internal->avctx->time_base;
4166 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
4168 st->codec->framerate = st->avg_frame_rate;
4170 if (st->internal->avctx->subtitle_header) {
4171 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
4172 if (!st->codec->subtitle_header)
4173 goto find_stream_info_err;
4174 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
4175 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
4176 st->codec->subtitle_header_size);
4179 // Fields unavailable in AVCodecParameters
4180 st->codec->coded_width = st->internal->avctx->coded_width;
4181 st->codec->coded_height = st->internal->avctx->coded_height;
4182 st->codec->properties = st->internal->avctx->properties;
4183 FF_ENABLE_DEPRECATION_WARNINGS
4186 st->internal->avctx_inited = 0;
4189 find_stream_info_err:
4190 for (i = 0; i < ic->nb_streams; i++) {
4191 st = ic->streams[i];
4193 av_freep(&st->info->duration_error);
4194 avcodec_close(ic->streams[i]->internal->avctx);
4195 av_freep(&ic->streams[i]->info);
4196 av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
4197 av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);
4200 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
4201 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
4204 unref_then_goto_end:
4205 av_packet_unref(&pkt1);
4206 goto find_stream_info_err;
4209 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
4213 for (i = 0; i < ic->nb_programs; i++) {
4214 if (ic->programs[i] == last) {
4218 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
4219 if (ic->programs[i]->stream_index[j] == s)
4220 return ic->programs[i];
4226 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
4227 int wanted_stream_nb, int related_stream,
4228 AVCodec **decoder_ret, int flags)
4230 int i, nb_streams = ic->nb_streams;
4231 int ret = AVERROR_STREAM_NOT_FOUND;
4232 int best_count = -1, best_multiframe = -1, best_disposition = -1;
4233 int count, multiframe, disposition;
4234 int64_t best_bitrate = -1;
4236 unsigned *program = NULL;
4237 const AVCodec *decoder = NULL, *best_decoder = NULL;
4239 if (related_stream >= 0 && wanted_stream_nb < 0) {
4240 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
4242 program = p->stream_index;
4243 nb_streams = p->nb_stream_indexes;
4246 for (i = 0; i < nb_streams; i++) {
4247 int real_stream_index = program ? program[i] : i;
4248 AVStream *st = ic->streams[real_stream_index];
4249 AVCodecParameters *par = st->codecpar;
4250 if (par->codec_type != type)
4252 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
4254 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
4257 decoder = find_decoder(ic, st, par->codec_id);
4260 ret = AVERROR_DECODER_NOT_FOUND;
4264 disposition = !(st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED | AV_DISPOSITION_VISUAL_IMPAIRED))
4265 + !! (st->disposition & AV_DISPOSITION_DEFAULT);
4266 count = st->codec_info_nb_frames;
4267 bitrate = par->bit_rate;
4268 multiframe = FFMIN(5, count);
4269 if ((best_disposition > disposition) ||
4270 (best_disposition == disposition && best_multiframe > multiframe) ||
4271 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate > bitrate) ||
4272 (best_disposition == disposition && best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
4274 best_disposition = disposition;
4276 best_bitrate = bitrate;
4277 best_multiframe = multiframe;
4278 ret = real_stream_index;
4279 best_decoder = decoder;
4280 if (program && i == nb_streams - 1 && ret < 0) {
4282 nb_streams = ic->nb_streams;
4283 /* no related stream found, try again with everything */
4288 *decoder_ret = (AVCodec*)best_decoder;
4292 /*******************************************************/
4294 int av_read_play(AVFormatContext *s)
4296 if (s->iformat->read_play)
4297 return s->iformat->read_play(s);
4299 return avio_pause(s->pb, 0);
4300 return AVERROR(ENOSYS);
4303 int av_read_pause(AVFormatContext *s)
4305 if (s->iformat->read_pause)
4306 return s->iformat->read_pause(s);
4308 return avio_pause(s->pb, 1);
4309 return AVERROR(ENOSYS);
4312 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
4317 dst->time_base = src->time_base;
4318 dst->nb_frames = src->nb_frames;
4319 dst->disposition = src->disposition;
4320 dst->sample_aspect_ratio = src->sample_aspect_ratio;
4321 dst->avg_frame_rate = src->avg_frame_rate;
4322 dst->r_frame_rate = src->r_frame_rate;
4324 av_dict_free(&dst->metadata);
4325 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
4329 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
4333 /* Free existing side data*/
4334 for (i = 0; i < dst->nb_side_data; i++)
4335 av_free(dst->side_data[i].data);
4336 av_freep(&dst->side_data);
4337 dst->nb_side_data = 0;
4339 /* Copy side data if present */
4340 if (src->nb_side_data) {
4341 dst->side_data = av_mallocz_array(src->nb_side_data,
4342 sizeof(AVPacketSideData));
4343 if (!dst->side_data)
4344 return AVERROR(ENOMEM);
4345 dst->nb_side_data = src->nb_side_data;
4347 for (i = 0; i < src->nb_side_data; i++) {
4348 uint8_t *data = av_memdup(src->side_data[i].data,
4349 src->side_data[i].size);
4351 return AVERROR(ENOMEM);
4352 dst->side_data[i].type = src->side_data[i].type;
4353 dst->side_data[i].size = src->side_data[i].size;
4354 dst->side_data[i].data = data;
4358 #if FF_API_LAVF_FFSERVER
4359 FF_DISABLE_DEPRECATION_WARNINGS
4360 av_freep(&dst->recommended_encoder_configuration);
4361 if (src->recommended_encoder_configuration) {
4362 const char *conf_str = src->recommended_encoder_configuration;
4363 dst->recommended_encoder_configuration = av_strdup(conf_str);
4364 if (!dst->recommended_encoder_configuration)
4365 return AVERROR(ENOMEM);
4367 FF_ENABLE_DEPRECATION_WARNINGS
4373 static void free_stream(AVStream **pst)
4375 AVStream *st = *pst;
4381 for (i = 0; i < st->nb_side_data; i++)
4382 av_freep(&st->side_data[i].data);
4383 av_freep(&st->side_data);
4386 av_parser_close(st->parser);
4388 if (st->attached_pic.data)
4389 av_packet_unref(&st->attached_pic);
4392 avcodec_free_context(&st->internal->avctx);
4393 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4394 av_bsf_free(&st->internal->bsfcs[i]);
4395 av_freep(&st->internal->bsfcs);
4397 av_freep(&st->internal->priv_pts);
4398 av_bsf_free(&st->internal->extract_extradata.bsf);
4399 av_packet_free(&st->internal->extract_extradata.pkt);
4401 av_freep(&st->internal);
4403 av_dict_free(&st->metadata);
4404 avcodec_parameters_free(&st->codecpar);
4405 av_freep(&st->probe_data.buf);
4406 av_freep(&st->index_entries);
4407 #if FF_API_LAVF_AVCTX
4408 FF_DISABLE_DEPRECATION_WARNINGS
4409 avcodec_free_context(&st->codec);
4410 FF_ENABLE_DEPRECATION_WARNINGS
4412 av_freep(&st->priv_data);
4414 av_freep(&st->info->duration_error);
4415 av_freep(&st->info);
4416 #if FF_API_LAVF_FFSERVER
4417 FF_DISABLE_DEPRECATION_WARNINGS
4418 av_freep(&st->recommended_encoder_configuration);
4419 FF_ENABLE_DEPRECATION_WARNINGS
4425 void ff_free_stream(AVFormatContext *s, AVStream *st)
4427 av_assert0(s->nb_streams>0);
4428 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4430 free_stream(&s->streams[ --s->nb_streams ]);
4433 void avformat_free_context(AVFormatContext *s)
4440 if (s->oformat && s->oformat->deinit && s->internal->initialized)
4441 s->oformat->deinit(s);
4444 if (s->iformat && s->iformat->priv_class && s->priv_data)
4445 av_opt_free(s->priv_data);
4446 if (s->oformat && s->oformat->priv_class && s->priv_data)
4447 av_opt_free(s->priv_data);
4449 for (i = s->nb_streams - 1; i >= 0; i--)
4450 ff_free_stream(s, s->streams[i]);
4453 for (i = s->nb_programs - 1; i >= 0; i--) {
4454 av_dict_free(&s->programs[i]->metadata);
4455 av_freep(&s->programs[i]->stream_index);
4456 av_freep(&s->programs[i]);
4458 av_freep(&s->programs);
4459 av_freep(&s->priv_data);
4460 while (s->nb_chapters--) {
4461 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4462 av_freep(&s->chapters[s->nb_chapters]);
4464 av_freep(&s->chapters);
4465 av_dict_free(&s->metadata);
4466 av_dict_free(&s->internal->id3v2_meta);
4467 av_freep(&s->streams);
4468 flush_packet_queue(s);
4469 av_freep(&s->internal);
4474 void avformat_close_input(AVFormatContext **ps)
4485 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4486 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4489 flush_packet_queue(s);
4492 if (s->iformat->read_close)
4493 s->iformat->read_close(s);
4495 avformat_free_context(s);
4502 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4508 if (s->nb_streams >= FFMIN(s->max_streams, INT_MAX/sizeof(*streams))) {
4509 if (s->max_streams < INT_MAX/sizeof(*streams))
4510 av_log(s, AV_LOG_ERROR, "Number of streams exceeds max_streams parameter (%d), see the documentation if you wish to increase it\n", s->max_streams);
4513 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4516 s->streams = streams;
4518 st = av_mallocz(sizeof(AVStream));
4521 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4525 st->info->last_dts = AV_NOPTS_VALUE;
4527 #if FF_API_LAVF_AVCTX
4528 FF_DISABLE_DEPRECATION_WARNINGS
4529 st->codec = avcodec_alloc_context3(c);
4535 FF_ENABLE_DEPRECATION_WARNINGS
4538 st->internal = av_mallocz(sizeof(*st->internal));
4542 st->codecpar = avcodec_parameters_alloc();
4546 st->internal->avctx = avcodec_alloc_context3(NULL);
4547 if (!st->internal->avctx)
4551 #if FF_API_LAVF_AVCTX
4552 FF_DISABLE_DEPRECATION_WARNINGS
4553 /* no default bitrate if decoding */
4554 st->codec->bit_rate = 0;
4555 FF_ENABLE_DEPRECATION_WARNINGS
4558 /* default pts setting is MPEG-like */
4559 avpriv_set_pts_info(st, 33, 1, 90000);
4560 /* we set the current DTS to 0 so that formats without any timestamps
4561 * but durations get some timestamps, formats with some unknown
4562 * timestamps have their first few packets buffered and the
4563 * timestamps corrected before they are returned to the user */
4564 st->cur_dts = RELATIVE_TS_BASE;
4566 st->cur_dts = AV_NOPTS_VALUE;
4569 st->index = s->nb_streams;
4570 st->start_time = AV_NOPTS_VALUE;
4571 st->duration = AV_NOPTS_VALUE;
4572 st->first_dts = AV_NOPTS_VALUE;
4573 st->probe_packets = MAX_PROBE_PACKETS;
4574 st->pts_wrap_reference = AV_NOPTS_VALUE;
4575 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4577 st->last_IP_pts = AV_NOPTS_VALUE;
4578 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4579 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4580 st->pts_buffer[i] = AV_NOPTS_VALUE;
4582 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4584 #if FF_API_R_FRAME_RATE
4585 st->info->last_dts = AV_NOPTS_VALUE;
4587 st->info->fps_first_dts = AV_NOPTS_VALUE;
4588 st->info->fps_last_dts = AV_NOPTS_VALUE;
4590 st->inject_global_side_data = s->internal->inject_global_side_data;
4592 st->internal->need_context_update = 1;
4594 s->streams[s->nb_streams++] = st;
4601 AVProgram *av_new_program(AVFormatContext *ac, int id)
4603 AVProgram *program = NULL;
4606 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4608 for (i = 0; i < ac->nb_programs; i++)
4609 if (ac->programs[i]->id == id)
4610 program = ac->programs[i];
4613 program = av_mallocz(sizeof(AVProgram));
4616 dynarray_add(&ac->programs, &ac->nb_programs, program);
4617 program->discard = AVDISCARD_NONE;
4618 program->pmt_version = -1;
4621 program->pts_wrap_reference = AV_NOPTS_VALUE;
4622 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4624 program->start_time =
4625 program->end_time = AV_NOPTS_VALUE;
4630 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4631 int64_t start, int64_t end, const char *title)
4633 AVChapter *chapter = NULL;
4636 if (end != AV_NOPTS_VALUE && start > end) {
4637 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4641 for (i = 0; i < s->nb_chapters; i++)
4642 if (s->chapters[i]->id == id)
4643 chapter = s->chapters[i];
4646 chapter = av_mallocz(sizeof(AVChapter));
4649 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4651 av_dict_set(&chapter->metadata, "title", title, 0);
4653 chapter->time_base = time_base;
4654 chapter->start = start;
4660 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4663 AVProgram *program = NULL;
4666 if (idx >= ac->nb_streams) {
4667 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4671 for (i = 0; i < ac->nb_programs; i++) {
4672 if (ac->programs[i]->id != progid)
4674 program = ac->programs[i];
4675 for (j = 0; j < program->nb_stream_indexes; j++)
4676 if (program->stream_index[j] == idx)
4679 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4682 program->stream_index = tmp;
4683 program->stream_index[program->nb_stream_indexes++] = idx;
4688 uint64_t ff_ntp_time(void)
4690 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4693 uint64_t ff_get_formatted_ntp_time(uint64_t ntp_time_us)
4695 uint64_t ntp_ts, frac_part, sec;
4698 //current ntp time in seconds and micro seconds
4699 sec = ntp_time_us / 1000000;
4700 usec = ntp_time_us % 1000000;
4702 //encoding in ntp timestamp format
4703 frac_part = usec * 0xFFFFFFFFULL;
4704 frac_part /= 1000000;
4706 if (sec > 0xFFFFFFFFULL)
4707 av_log(NULL, AV_LOG_WARNING, "NTP time format roll over detected\n");
4710 ntp_ts |= frac_part;
4715 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4718 char *q, buf1[20], c;
4719 int nd, len, percentd_found;
4731 while (av_isdigit(*p))
4732 nd = nd * 10 + *p++ - '0';
4734 } while (av_isdigit(c));
4740 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4745 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4747 if ((q - buf + len) > buf_size - 1)
4749 memcpy(q, buf1, len);
4757 if ((q - buf) < buf_size - 1)
4761 if (!percentd_found)
4770 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4772 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4775 void av_url_split(char *proto, int proto_size,
4776 char *authorization, int authorization_size,
4777 char *hostname, int hostname_size,
4778 int *port_ptr, char *path, int path_size, const char *url)
4780 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4786 if (authorization_size > 0)
4787 authorization[0] = 0;
4788 if (hostname_size > 0)
4793 /* parse protocol */
4794 if ((p = strchr(url, ':'))) {
4795 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4802 /* no protocol means plain filename */
4803 av_strlcpy(path, url, path_size);
4807 /* separate path from hostname */
4808 ls = strchr(p, '/');
4809 ls2 = strchr(p, '?');
4813 ls = FFMIN(ls, ls2);
4815 av_strlcpy(path, ls, path_size);
4817 ls = &p[strlen(p)]; // XXX
4819 /* the rest is hostname, use that to parse auth/port */
4821 /* authorization (user[:pass]@hostname) */
4823 while ((at = strchr(p, '@')) && at < ls) {
4824 av_strlcpy(authorization, at2,
4825 FFMIN(authorization_size, at + 1 - at2));
4826 p = at + 1; /* skip '@' */
4829 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4831 av_strlcpy(hostname, p + 1,
4832 FFMIN(hostname_size, brk - p));
4833 if (brk[1] == ':' && port_ptr)
4834 *port_ptr = atoi(brk + 2);
4835 } else if ((col = strchr(p, ':')) && col < ls) {
4836 av_strlcpy(hostname, p,
4837 FFMIN(col + 1 - p, hostname_size));
4839 *port_ptr = atoi(col + 1);
4841 av_strlcpy(hostname, p,
4842 FFMIN(ls + 1 - p, hostname_size));
4846 int ff_mkdir_p(const char *path)
4849 char *temp = av_strdup(path);
4853 if (!path || !temp) {
4857 if (!av_strncasecmp(temp, "/", 1) || !av_strncasecmp(temp, "\\", 1)) {
4859 } else if (!av_strncasecmp(temp, "./", 2) || !av_strncasecmp(temp, ".\\", 2)) {
4863 for ( ; *pos != '\0'; ++pos) {
4864 if (*pos == '/' || *pos == '\\') {
4867 ret = mkdir(temp, 0755);
4872 if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) {
4873 ret = mkdir(temp, 0755);
4880 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4883 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4886 'C', 'D', 'E', 'F' };
4887 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4890 'c', 'd', 'e', 'f' };
4891 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4893 for (i = 0; i < s; i++) {
4894 buff[i * 2] = hex_table[src[i] >> 4];
4895 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4901 int ff_hex_to_data(uint8_t *data, const char *p)
4908 p += strspn(p, SPACE_CHARS);
4911 c = av_toupper((unsigned char) *p++);
4912 if (c >= '0' && c <= '9')
4914 else if (c >= 'A' && c <= 'F')
4929 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4930 unsigned int pts_num, unsigned int pts_den)
4933 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4934 if (new_tb.num != pts_num)
4935 av_log(NULL, AV_LOG_DEBUG,
4936 "st:%d removing common factor %d from timebase\n",
4937 s->index, pts_num / new_tb.num);
4939 av_log(NULL, AV_LOG_WARNING,
4940 "st:%d has too large timebase, reducing\n", s->index);
4942 if (new_tb.num <= 0 || new_tb.den <= 0) {
4943 av_log(NULL, AV_LOG_ERROR,
4944 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4945 new_tb.num, new_tb.den,
4949 s->time_base = new_tb;
4950 #if FF_API_LAVF_AVCTX
4951 FF_DISABLE_DEPRECATION_WARNINGS
4952 s->codec->pkt_timebase = new_tb;
4953 FF_ENABLE_DEPRECATION_WARNINGS
4955 s->internal->avctx->pkt_timebase = new_tb;
4956 s->pts_wrap_bits = pts_wrap_bits;
4959 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4962 const char *ptr = str;
4964 /* Parse key=value pairs. */
4967 char *dest = NULL, *dest_end;
4968 int key_len, dest_len = 0;
4970 /* Skip whitespace and potential commas. */
4971 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4978 if (!(ptr = strchr(key, '=')))
4981 key_len = ptr - key;
4983 callback_get_buf(context, key, key_len, &dest, &dest_len);
4984 dest_end = dest + dest_len - 1;
4988 while (*ptr && *ptr != '\"') {
4992 if (dest && dest < dest_end)
4996 if (dest && dest < dest_end)
5004 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
5005 if (dest && dest < dest_end)
5013 int ff_find_stream_index(AVFormatContext *s, int id)
5016 for (i = 0; i < s->nb_streams; i++)
5017 if (s->streams[i]->id == id)
5022 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
5026 unsigned int codec_tag;
5027 if (ofmt->query_codec)
5028 return ofmt->query_codec(codec_id, std_compliance);
5029 else if (ofmt->codec_tag)
5030 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
5031 else if (codec_id == ofmt->video_codec ||
5032 codec_id == ofmt->audio_codec ||
5033 codec_id == ofmt->subtitle_codec ||
5034 codec_id == ofmt->data_codec)
5037 return AVERROR_PATCHWELCOME;
5040 int avformat_network_init(void)
5044 if ((ret = ff_network_init()) < 0)
5046 if ((ret = ff_tls_init()) < 0)
5052 int avformat_network_deinit(void)
5061 int ff_add_param_change(AVPacket *pkt, int32_t channels,
5062 uint64_t channel_layout, int32_t sample_rate,
5063 int32_t width, int32_t height)
5069 return AVERROR(EINVAL);
5072 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
5074 if (channel_layout) {
5076 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
5080 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
5082 if (width || height) {
5084 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
5086 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
5088 return AVERROR(ENOMEM);
5089 bytestream_put_le32(&data, flags);
5091 bytestream_put_le32(&data, channels);
5093 bytestream_put_le64(&data, channel_layout);
5095 bytestream_put_le32(&data, sample_rate);
5096 if (width || height) {
5097 bytestream_put_le32(&data, width);
5098 bytestream_put_le32(&data, height);
5103 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
5105 AVRational undef = {0, 1};
5106 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
5107 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
5108 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
5110 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
5111 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
5112 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
5113 stream_sample_aspect_ratio = undef;
5115 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
5116 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
5117 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
5118 frame_sample_aspect_ratio = undef;
5120 if (stream_sample_aspect_ratio.num)
5121 return stream_sample_aspect_ratio;
5123 return frame_sample_aspect_ratio;
5126 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
5128 AVRational fr = st->r_frame_rate;
5129 AVRational codec_fr = st->internal->avctx->framerate;
5130 AVRational avg_fr = st->avg_frame_rate;
5132 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
5133 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
5138 if (st->internal->avctx->ticks_per_frame > 1) {
5139 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
5140 (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))
5148 * Matches a stream specifier (but ignores requested index).
5150 * @param indexptr set to point to the requested stream index if there is one
5152 * @return <0 on error
5153 * 0 if st is NOT a matching stream
5154 * >0 if st is a matching stream
5156 static int match_stream_specifier(AVFormatContext *s, AVStream *st,
5157 const char *spec, const char **indexptr, AVProgram **p)
5159 int match = 1; /* Stores if the specifier matches so far. */
5161 if (*spec <= '9' && *spec >= '0') { /* opt:index */
5165 } else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
5166 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
5167 enum AVMediaType type;
5171 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
5172 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
5173 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
5174 case 'd': type = AVMEDIA_TYPE_DATA; break;
5175 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
5176 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
5177 default: av_assert0(0);
5179 if (*spec && *spec++ != ':') /* If we are not at the end, then another specifier must follow. */
5180 return AVERROR(EINVAL);
5182 #if FF_API_LAVF_AVCTX
5183 FF_DISABLE_DEPRECATION_WARNINGS
5184 if (type != st->codecpar->codec_type
5185 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
5187 FF_ENABLE_DEPRECATION_WARNINGS
5189 if (type != st->codecpar->codec_type)
5192 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
5194 } else if (*spec == 'p' && *(spec + 1) == ':') {
5199 prog_id = strtol(spec, &endptr, 0);
5200 /* Disallow empty id and make sure that if we are not at the end, then another specifier must follow. */
5201 if (spec == endptr || (*endptr && *endptr++ != ':'))
5202 return AVERROR(EINVAL);
5205 for (i = 0; i < s->nb_programs; i++) {
5206 if (s->programs[i]->id != prog_id)
5209 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++) {
5210 if (st->index == s->programs[i]->stream_index[j]) {
5213 *p = s->programs[i];
5222 } else if (*spec == '#' ||
5223 (*spec == 'i' && *(spec + 1) == ':')) {
5226 spec += 1 + (*spec == 'i');
5227 stream_id = strtol(spec, &endptr, 0);
5228 if (spec == endptr || *endptr) /* Disallow empty id and make sure we are at the end. */
5229 return AVERROR(EINVAL);
5230 return match && (stream_id == st->id);
5231 } else if (*spec == 'm' && *(spec + 1) == ':') {
5232 AVDictionaryEntry *tag;
5238 val = strchr(spec, ':');
5240 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
5242 return AVERROR(ENOMEM);
5244 tag = av_dict_get(st->metadata, key, NULL, 0);
5246 if (!val || !strcmp(tag->value, val + 1))
5255 return match && ret;
5256 } else if (*spec == 'u' && *(spec + 1) == '\0') {
5257 AVCodecParameters *par = st->codecpar;
5258 #if FF_API_LAVF_AVCTX
5259 FF_DISABLE_DEPRECATION_WARNINGS
5260 AVCodecContext *codec = st->codec;
5261 FF_ENABLE_DEPRECATION_WARNINGS
5264 switch (par->codec_type) {
5265 case AVMEDIA_TYPE_AUDIO:
5266 val = par->sample_rate && par->channels;
5267 #if FF_API_LAVF_AVCTX
5268 val = val || (codec->sample_rate && codec->channels);
5270 if (par->format == AV_SAMPLE_FMT_NONE
5271 #if FF_API_LAVF_AVCTX
5272 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
5277 case AVMEDIA_TYPE_VIDEO:
5278 val = par->width && par->height;
5279 #if FF_API_LAVF_AVCTX
5280 val = val || (codec->width && codec->height);
5282 if (par->format == AV_PIX_FMT_NONE
5283 #if FF_API_LAVF_AVCTX
5284 && codec->pix_fmt == AV_PIX_FMT_NONE
5289 case AVMEDIA_TYPE_UNKNOWN:
5296 #if FF_API_LAVF_AVCTX
5297 return match && ((par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0);
5299 return match && (par->codec_id != AV_CODEC_ID_NONE && val != 0);
5302 return AVERROR(EINVAL);
5310 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
5315 const char *indexptr = NULL;
5316 AVProgram *p = NULL;
5319 ret = match_stream_specifier(s, st, spec, &indexptr, &p);
5326 index = strtol(indexptr, &endptr, 0);
5327 if (*endptr) { /* We can't have anything after the requested index. */
5328 ret = AVERROR(EINVAL);
5332 /* This is not really needed but saves us a loop for simple stream index specifiers. */
5333 if (spec == indexptr)
5334 return (index == st->index);
5336 /* If we requested a matching stream index, we have to ensure st is that. */
5337 nb_streams = p ? p->nb_stream_indexes : s->nb_streams;
5338 for (int i = 0; i < nb_streams && index >= 0; i++) {
5339 AVStream *candidate = p ? s->streams[p->stream_index[i]] : s->streams[i];
5340 ret = match_stream_specifier(s, candidate, spec, NULL, NULL);
5343 if (ret > 0 && index-- == 0 && st == candidate)
5349 if (ret == AVERROR(EINVAL))
5350 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
5354 int ff_generate_avci_extradata(AVStream *st)
5356 static const uint8_t avci100_1080p_extradata[] = {
5358 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5359 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5360 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5361 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
5362 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
5363 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
5364 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
5365 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
5366 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
5368 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5371 static const uint8_t avci100_1080i_extradata[] = {
5373 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5374 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
5375 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
5376 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
5377 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
5378 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
5379 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
5380 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
5381 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
5382 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
5383 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
5385 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
5388 static const uint8_t avci50_1080p_extradata[] = {
5390 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5391 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5392 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5393 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5394 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5395 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
5396 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
5397 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
5398 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
5400 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5403 static const uint8_t avci50_1080i_extradata[] = {
5405 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
5406 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5407 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5408 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
5409 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
5410 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
5411 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
5412 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
5413 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
5414 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
5415 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
5417 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5420 static const uint8_t avci100_720p_extradata[] = {
5422 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
5423 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
5424 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
5425 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
5426 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
5427 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
5428 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
5429 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
5430 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
5431 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
5433 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
5436 static const uint8_t avci50_720p_extradata[] = {
5438 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
5439 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
5440 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
5441 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
5442 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
5443 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
5444 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
5445 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
5446 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
5448 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
5452 const uint8_t *data = NULL;
5455 if (st->codecpar->width == 1920) {
5456 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5457 data = avci100_1080p_extradata;
5458 size = sizeof(avci100_1080p_extradata);
5460 data = avci100_1080i_extradata;
5461 size = sizeof(avci100_1080i_extradata);
5463 } else if (st->codecpar->width == 1440) {
5464 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
5465 data = avci50_1080p_extradata;
5466 size = sizeof(avci50_1080p_extradata);
5468 data = avci50_1080i_extradata;
5469 size = sizeof(avci50_1080i_extradata);
5471 } else if (st->codecpar->width == 1280) {
5472 data = avci100_720p_extradata;
5473 size = sizeof(avci100_720p_extradata);
5474 } else if (st->codecpar->width == 960) {
5475 data = avci50_720p_extradata;
5476 size = sizeof(avci50_720p_extradata);
5482 av_freep(&st->codecpar->extradata);
5483 if (ff_alloc_extradata(st->codecpar, size))
5484 return AVERROR(ENOMEM);
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