2 * various utility functions for use within FFmpeg
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/internal.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/parseutils.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/time.h"
36 #include "libavutil/time_internal.h"
37 #include "libavutil/timestamp.h"
39 #include "libavcodec/bytestream.h"
40 #include "libavcodec/internal.h"
41 #include "libavcodec/raw.h"
43 #include "audiointerleave.h"
45 #include "avio_internal.h"
55 #include "libavutil/ffversion.h"
56 const char av_format_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
60 * various utility functions for use within FFmpeg
63 unsigned avformat_version(void)
65 av_assert0(LIBAVFORMAT_VERSION_MICRO >= 100);
66 return LIBAVFORMAT_VERSION_INT;
69 const char *avformat_configuration(void)
71 return FFMPEG_CONFIGURATION;
74 const char *avformat_license(void)
76 #define LICENSE_PREFIX "libavformat license: "
77 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
80 #define RELATIVE_TS_BASE (INT64_MAX - (1LL<<48))
82 static int is_relative(int64_t ts) {
83 return ts > (RELATIVE_TS_BASE - (1LL<<48));
87 * Wrap a given time stamp, if there is an indication for an overflow
90 * @param timestamp the time stamp to wrap
91 * @return resulting time stamp
93 static int64_t wrap_timestamp(const AVStream *st, int64_t timestamp)
95 if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
96 st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
97 if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
98 timestamp < st->pts_wrap_reference)
99 return timestamp + (1ULL << st->pts_wrap_bits);
100 else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
101 timestamp >= st->pts_wrap_reference)
102 return timestamp - (1ULL << st->pts_wrap_bits);
107 MAKE_ACCESSORS(AVStream, stream, AVRational, r_frame_rate)
108 MAKE_ACCESSORS(AVStream, stream, char *, recommended_encoder_configuration)
109 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, video_codec)
110 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, audio_codec)
111 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, subtitle_codec)
112 MAKE_ACCESSORS(AVFormatContext, format, AVCodec *, data_codec)
113 MAKE_ACCESSORS(AVFormatContext, format, int, metadata_header_padding)
114 MAKE_ACCESSORS(AVFormatContext, format, void *, opaque)
115 MAKE_ACCESSORS(AVFormatContext, format, av_format_control_message, control_message_cb)
116 #if FF_API_OLD_OPEN_CALLBACKS
117 FF_DISABLE_DEPRECATION_WARNINGS
118 MAKE_ACCESSORS(AVFormatContext, format, AVOpenCallback, open_cb)
119 FF_ENABLE_DEPRECATION_WARNINGS
122 int64_t av_stream_get_end_pts(const AVStream *st)
125 return st->priv_pts->val;
127 return AV_NOPTS_VALUE;
130 struct AVCodecParserContext *av_stream_get_parser(const AVStream *st)
135 void av_format_inject_global_side_data(AVFormatContext *s)
138 s->internal->inject_global_side_data = 1;
139 for (i = 0; i < s->nb_streams; i++) {
140 AVStream *st = s->streams[i];
141 st->inject_global_side_data = 1;
145 int ff_copy_whiteblacklists(AVFormatContext *dst, const AVFormatContext *src)
147 av_assert0(!dst->codec_whitelist &&
148 !dst->format_whitelist &&
149 !dst->protocol_whitelist &&
150 !dst->protocol_blacklist);
151 dst-> codec_whitelist = av_strdup(src->codec_whitelist);
152 dst->format_whitelist = av_strdup(src->format_whitelist);
153 dst->protocol_whitelist = av_strdup(src->protocol_whitelist);
154 dst->protocol_blacklist = av_strdup(src->protocol_blacklist);
155 if ( (src-> codec_whitelist && !dst-> codec_whitelist)
156 || (src-> format_whitelist && !dst-> format_whitelist)
157 || (src->protocol_whitelist && !dst->protocol_whitelist)
158 || (src->protocol_blacklist && !dst->protocol_blacklist)) {
159 av_log(dst, AV_LOG_ERROR, "Failed to duplicate black/whitelist\n");
160 return AVERROR(ENOMEM);
165 static const AVCodec *find_decoder(AVFormatContext *s, const AVStream *st, enum AVCodecID codec_id)
167 #if FF_API_LAVF_AVCTX
168 FF_DISABLE_DEPRECATION_WARNINGS
169 if (st->codec->codec)
170 return st->codec->codec;
171 FF_ENABLE_DEPRECATION_WARNINGS
174 switch (st->codecpar->codec_type) {
175 case AVMEDIA_TYPE_VIDEO:
176 if (s->video_codec) return s->video_codec;
178 case AVMEDIA_TYPE_AUDIO:
179 if (s->audio_codec) return s->audio_codec;
181 case AVMEDIA_TYPE_SUBTITLE:
182 if (s->subtitle_codec) return s->subtitle_codec;
186 return avcodec_find_decoder(codec_id);
189 int av_format_get_probe_score(const AVFormatContext *s)
191 return s->probe_score;
194 /* an arbitrarily chosen "sane" max packet size -- 50M */
195 #define SANE_CHUNK_SIZE (50000000)
197 int ffio_limit(AVIOContext *s, int size)
199 if (s->maxsize>= 0) {
200 int64_t remaining= s->maxsize - avio_tell(s);
201 if (remaining < size) {
202 int64_t newsize = avio_size(s);
203 if (!s->maxsize || s->maxsize<newsize)
204 s->maxsize = newsize - !newsize;
205 remaining= s->maxsize - avio_tell(s);
206 remaining= FFMAX(remaining, 0);
209 if (s->maxsize>= 0 && remaining+1 < size) {
210 av_log(NULL, remaining ? AV_LOG_ERROR : AV_LOG_DEBUG, "Truncating packet of size %d to %"PRId64"\n", size, remaining+1);
217 /* Read the data in sane-sized chunks and append to pkt.
218 * Return the number of bytes read or an error. */
219 static int append_packet_chunked(AVIOContext *s, AVPacket *pkt, int size)
221 int64_t orig_pos = pkt->pos; // av_grow_packet might reset pos
222 int orig_size = pkt->size;
226 int prev_size = pkt->size;
229 /* When the caller requests a lot of data, limit it to the amount
230 * left in file or SANE_CHUNK_SIZE when it is not known. */
232 if (read_size > SANE_CHUNK_SIZE/10) {
233 read_size = ffio_limit(s, read_size);
234 // If filesize/maxsize is unknown, limit to SANE_CHUNK_SIZE
236 read_size = FFMIN(read_size, SANE_CHUNK_SIZE);
239 ret = av_grow_packet(pkt, read_size);
243 ret = avio_read(s, pkt->data + prev_size, read_size);
244 if (ret != read_size) {
245 av_shrink_packet(pkt, prev_size + FFMAX(ret, 0));
252 pkt->flags |= AV_PKT_FLAG_CORRUPT;
256 av_packet_unref(pkt);
257 return pkt->size > orig_size ? pkt->size - orig_size : ret;
260 int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
265 pkt->pos = avio_tell(s);
267 return append_packet_chunked(s, pkt, size);
270 int av_append_packet(AVIOContext *s, AVPacket *pkt, int size)
273 return av_get_packet(s, pkt, size);
274 return append_packet_chunked(s, pkt, size);
277 int av_filename_number_test(const char *filename)
281 (av_get_frame_filename(buf, sizeof(buf), filename, 1) >= 0);
284 static int set_codec_from_probe_data(AVFormatContext *s, AVStream *st,
287 static const struct {
290 enum AVMediaType type;
292 { "aac", AV_CODEC_ID_AAC, AVMEDIA_TYPE_AUDIO },
293 { "ac3", AV_CODEC_ID_AC3, AVMEDIA_TYPE_AUDIO },
294 { "dts", AV_CODEC_ID_DTS, AVMEDIA_TYPE_AUDIO },
295 { "dvbsub", AV_CODEC_ID_DVB_SUBTITLE,AVMEDIA_TYPE_SUBTITLE },
296 { "dvbtxt", AV_CODEC_ID_DVB_TELETEXT,AVMEDIA_TYPE_SUBTITLE },
297 { "eac3", AV_CODEC_ID_EAC3, AVMEDIA_TYPE_AUDIO },
298 { "h264", AV_CODEC_ID_H264, AVMEDIA_TYPE_VIDEO },
299 { "hevc", AV_CODEC_ID_HEVC, AVMEDIA_TYPE_VIDEO },
300 { "loas", AV_CODEC_ID_AAC_LATM, AVMEDIA_TYPE_AUDIO },
301 { "m4v", AV_CODEC_ID_MPEG4, AVMEDIA_TYPE_VIDEO },
302 { "mp3", AV_CODEC_ID_MP3, AVMEDIA_TYPE_AUDIO },
303 { "mpegvideo", AV_CODEC_ID_MPEG2VIDEO, AVMEDIA_TYPE_VIDEO },
304 { "truehd", AV_CODEC_ID_TRUEHD, AVMEDIA_TYPE_AUDIO },
308 AVInputFormat *fmt = av_probe_input_format3(pd, 1, &score);
312 av_log(s, AV_LOG_DEBUG,
313 "Probe with size=%d, packets=%d detected %s with score=%d\n",
314 pd->buf_size, MAX_PROBE_PACKETS - st->probe_packets,
316 for (i = 0; fmt_id_type[i].name; i++) {
317 if (!strcmp(fmt->name, fmt_id_type[i].name)) {
318 if (fmt_id_type[i].type != AVMEDIA_TYPE_AUDIO &&
319 st->codecpar->sample_rate)
321 if (st->request_probe > score &&
322 st->codecpar->codec_id != fmt_id_type[i].id)
324 st->codecpar->codec_id = fmt_id_type[i].id;
325 st->codecpar->codec_type = fmt_id_type[i].type;
326 st->internal->need_context_update = 1;
327 #if FF_API_LAVF_AVCTX
328 FF_DISABLE_DEPRECATION_WARNINGS
329 st->codec->codec_type = st->codecpar->codec_type;
330 st->codec->codec_id = st->codecpar->codec_id;
331 FF_ENABLE_DEPRECATION_WARNINGS
340 /************************************************************/
341 /* input media file */
343 int av_demuxer_open(AVFormatContext *ic) {
346 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
347 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
348 return AVERROR(EINVAL);
351 if (ic->iformat->read_header) {
352 err = ic->iformat->read_header(ic);
357 if (ic->pb && !ic->internal->data_offset)
358 ic->internal->data_offset = avio_tell(ic->pb);
363 /* Open input file and probe the format if necessary. */
364 static int init_input(AVFormatContext *s, const char *filename,
365 AVDictionary **options)
368 AVProbeData pd = { filename, NULL, 0 };
369 int score = AVPROBE_SCORE_RETRY;
372 s->flags |= AVFMT_FLAG_CUSTOM_IO;
374 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
375 s, 0, s->format_probesize);
376 else if (s->iformat->flags & AVFMT_NOFILE)
377 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
378 "will be ignored with AVFMT_NOFILE format.\n");
382 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
383 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
386 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
391 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
392 s, 0, s->format_probesize);
395 static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
396 AVPacketList **plast_pktl, int ref)
398 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
402 return AVERROR(ENOMEM);
405 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
414 (*plast_pktl)->next = pktl;
416 *packet_buffer = pktl;
418 /* Add the packet in the buffered packet list. */
423 int avformat_queue_attached_pictures(AVFormatContext *s)
426 for (i = 0; i < s->nb_streams; i++)
427 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
428 s->streams[i]->discard < AVDISCARD_ALL) {
429 if (s->streams[i]->attached_pic.size <= 0) {
430 av_log(s, AV_LOG_WARNING,
431 "Attached picture on stream %d has invalid size, "
436 ret = add_to_pktbuf(&s->internal->raw_packet_buffer,
437 &s->streams[i]->attached_pic,
438 &s->internal->raw_packet_buffer_end, 1);
445 static int update_stream_avctx(AVFormatContext *s)
448 for (i = 0; i < s->nb_streams; i++) {
449 AVStream *st = s->streams[i];
451 if (!st->internal->need_context_update)
454 /* update internal codec context, for the parser */
455 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
459 #if FF_API_LAVF_AVCTX
460 FF_DISABLE_DEPRECATION_WARNINGS
461 /* update deprecated public codec context */
462 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
465 FF_ENABLE_DEPRECATION_WARNINGS
468 st->internal->need_context_update = 0;
474 int avformat_open_input(AVFormatContext **ps, const char *filename,
475 AVInputFormat *fmt, AVDictionary **options)
477 AVFormatContext *s = *ps;
479 AVDictionary *tmp = NULL;
480 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
482 if (!s && !(s = avformat_alloc_context()))
483 return AVERROR(ENOMEM);
485 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
486 return AVERROR(EINVAL);
492 av_dict_copy(&tmp, *options, 0);
494 if (s->pb) // must be before any goto fail
495 s->flags |= AVFMT_FLAG_CUSTOM_IO;
497 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
500 if ((ret = init_input(s, filename, &tmp)) < 0)
502 s->probe_score = ret;
504 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
505 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
506 if (!s->protocol_whitelist) {
507 ret = AVERROR(ENOMEM);
512 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
513 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
514 if (!s->protocol_blacklist) {
515 ret = AVERROR(ENOMEM);
520 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
521 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
522 ret = AVERROR(EINVAL);
526 avio_skip(s->pb, s->skip_initial_bytes);
528 /* Check filename in case an image number is expected. */
529 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
530 if (!av_filename_number_test(filename)) {
531 ret = AVERROR(EINVAL);
536 s->duration = s->start_time = AV_NOPTS_VALUE;
537 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
539 /* Allocate private data. */
540 if (s->iformat->priv_data_size > 0) {
541 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
542 ret = AVERROR(ENOMEM);
545 if (s->iformat->priv_class) {
546 *(const AVClass **) s->priv_data = s->iformat->priv_class;
547 av_opt_set_defaults(s->priv_data);
548 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
553 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
555 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, 0);
557 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
558 if ((ret = s->iformat->read_header(s)) < 0)
561 if (id3v2_extra_meta) {
562 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
563 !strcmp(s->iformat->name, "tta")) {
564 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
567 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
569 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
571 if ((ret = avformat_queue_attached_pictures(s)) < 0)
574 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
575 s->internal->data_offset = avio_tell(s->pb);
577 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
579 update_stream_avctx(s);
581 for (i = 0; i < s->nb_streams; i++)
582 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
585 av_dict_free(options);
592 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
594 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
596 avformat_free_context(s);
601 /*******************************************************/
603 static void force_codec_ids(AVFormatContext *s, AVStream *st)
605 switch (st->codecpar->codec_type) {
606 case AVMEDIA_TYPE_VIDEO:
607 if (s->video_codec_id)
608 st->codecpar->codec_id = s->video_codec_id;
610 case AVMEDIA_TYPE_AUDIO:
611 if (s->audio_codec_id)
612 st->codecpar->codec_id = s->audio_codec_id;
614 case AVMEDIA_TYPE_SUBTITLE:
615 if (s->subtitle_codec_id)
616 st->codecpar->codec_id = s->subtitle_codec_id;
618 case AVMEDIA_TYPE_DATA:
619 if (s->data_codec_id)
620 st->codecpar->codec_id = s->data_codec_id;
625 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
627 if (st->request_probe>0) {
628 AVProbeData *pd = &st->probe_data;
630 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
634 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
636 av_log(s, AV_LOG_WARNING,
637 "Failed to reallocate probe buffer for stream %d\n",
642 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
643 pd->buf_size += pkt->size;
644 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
647 st->probe_packets = 0;
649 av_log(s, AV_LOG_WARNING,
650 "nothing to probe for stream %d\n", st->index);
654 end= s->internal->raw_packet_buffer_remaining_size <= 0
655 || st->probe_packets<= 0;
657 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
658 int score = set_codec_from_probe_data(s, st, pd);
659 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
663 st->request_probe = -1;
664 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
665 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
667 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
669 force_codec_ids(s, st);
675 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
677 int64_t ref = pkt->dts;
678 int i, pts_wrap_behavior;
679 int64_t pts_wrap_reference;
680 AVProgram *first_program;
682 if (ref == AV_NOPTS_VALUE)
684 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
686 ref &= (1LL << st->pts_wrap_bits)-1;
688 // reference time stamp should be 60 s before first time stamp
689 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
690 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
691 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
692 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
693 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
695 first_program = av_find_program_from_stream(s, NULL, stream_index);
697 if (!first_program) {
698 int default_stream_index = av_find_default_stream_index(s);
699 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
700 for (i = 0; i < s->nb_streams; i++) {
701 if (av_find_program_from_stream(s, NULL, i))
703 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
704 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
708 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
709 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
713 AVProgram *program = first_program;
715 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
716 pts_wrap_reference = program->pts_wrap_reference;
717 pts_wrap_behavior = program->pts_wrap_behavior;
720 program = av_find_program_from_stream(s, program, stream_index);
723 // update every program with differing pts_wrap_reference
724 program = first_program;
726 if (program->pts_wrap_reference != pts_wrap_reference) {
727 for (i = 0; i<program->nb_stream_indexes; i++) {
728 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
729 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
732 program->pts_wrap_reference = pts_wrap_reference;
733 program->pts_wrap_behavior = pts_wrap_behavior;
735 program = av_find_program_from_stream(s, program, stream_index);
741 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
747 AVPacketList *pktl = s->internal->raw_packet_buffer;
751 st = s->streams[pkt->stream_index];
752 if (s->internal->raw_packet_buffer_remaining_size <= 0)
753 if ((err = probe_codec(s, st, NULL)) < 0)
755 if (st->request_probe <= 0) {
756 s->internal->raw_packet_buffer = pktl->next;
757 s->internal->raw_packet_buffer_remaining_size += pkt->size;
766 ret = s->iformat->read_packet(s, pkt);
768 /* Some demuxers return FFERROR_REDO when they consume
769 data and discard it (ignored streams, junk, extradata).
770 We must re-call the demuxer to get the real packet. */
771 if (ret == FFERROR_REDO)
773 if (!pktl || ret == AVERROR(EAGAIN))
775 for (i = 0; i < s->nb_streams; i++) {
777 if (st->probe_packets)
778 if ((err = probe_codec(s, st, NULL)) < 0)
780 av_assert0(st->request_probe <= 0);
786 AVPacket tmp = { 0 };
787 ret = av_packet_ref(&tmp, pkt);
793 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
794 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
795 av_log(s, AV_LOG_WARNING,
796 "Dropped corrupted packet (stream = %d)\n",
798 av_packet_unref(pkt);
802 if (pkt->stream_index >= (unsigned)s->nb_streams) {
803 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
807 st = s->streams[pkt->stream_index];
809 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
810 // correct first time stamps to negative values
811 if (!is_relative(st->first_dts))
812 st->first_dts = wrap_timestamp(st, st->first_dts);
813 if (!is_relative(st->start_time))
814 st->start_time = wrap_timestamp(st, st->start_time);
815 if (!is_relative(st->cur_dts))
816 st->cur_dts = wrap_timestamp(st, st->cur_dts);
819 pkt->dts = wrap_timestamp(st, pkt->dts);
820 pkt->pts = wrap_timestamp(st, pkt->pts);
822 force_codec_ids(s, st);
824 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
825 if (s->use_wallclock_as_timestamps)
826 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
828 if (!pktl && st->request_probe <= 0)
831 err = add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
832 &s->internal->raw_packet_buffer_end, 0);
835 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
837 if ((err = probe_codec(s, st, pkt)) < 0)
843 /**********************************************************/
845 static int determinable_frame_size(AVCodecContext *avctx)
847 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
848 avctx->codec_id == AV_CODEC_ID_MP1 ||
849 avctx->codec_id == AV_CODEC_ID_MP2 ||
850 avctx->codec_id == AV_CODEC_ID_MP3/* ||
851 avctx->codec_id == AV_CODEC_ID_CELT*/)
857 * Return the frame duration in seconds. Return 0 if not available.
859 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
860 AVCodecParserContext *pc, AVPacket *pkt)
862 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
863 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
864 int frame_size, sample_rate;
866 #if FF_API_LAVF_AVCTX
867 FF_DISABLE_DEPRECATION_WARNINGS
868 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
869 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
870 FF_ENABLE_DEPRECATION_WARNINGS
875 switch (st->codecpar->codec_type) {
876 case AVMEDIA_TYPE_VIDEO:
877 if (st->r_frame_rate.num && !pc && s->iformat) {
878 *pnum = st->r_frame_rate.den;
879 *pden = st->r_frame_rate.num;
880 } else if (st->time_base.num * 1000LL > st->time_base.den) {
881 *pnum = st->time_base.num;
882 *pden = st->time_base.den;
883 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
884 av_assert0(st->internal->avctx->ticks_per_frame);
885 av_reduce(pnum, pden,
887 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
890 if (pc && pc->repeat_pict) {
891 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
892 av_reduce(pnum, pden,
893 (*pnum) * (1LL + pc->repeat_pict),
897 /* If this codec can be interlaced or progressive then we need
898 * a parser to compute duration of a packet. Thus if we have
899 * no parser in such case leave duration undefined. */
900 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
904 case AVMEDIA_TYPE_AUDIO:
905 if (st->internal->avctx_inited) {
906 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
907 sample_rate = st->internal->avctx->sample_rate;
909 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
910 sample_rate = st->codecpar->sample_rate;
912 if (frame_size <= 0 || sample_rate <= 0)
922 static int is_intra_only(enum AVCodecID id)
924 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
927 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
932 static int has_decode_delay_been_guessed(AVStream *st)
934 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
935 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
937 #if CONFIG_H264_DECODER
938 if (st->internal->avctx->has_b_frames &&
939 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
942 if (st->internal->avctx->has_b_frames<3)
943 return st->nb_decoded_frames >= 7;
944 else if (st->internal->avctx->has_b_frames<4)
945 return st->nb_decoded_frames >= 18;
947 return st->nb_decoded_frames >= 20;
950 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
954 if (pktl == s->internal->packet_buffer_end)
955 return s->internal->parse_queue;
959 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
960 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
961 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
964 int delay = st->internal->avctx->has_b_frames;
967 if (dts == AV_NOPTS_VALUE) {
968 int64_t best_score = INT64_MAX;
969 for (i = 0; i<delay; i++) {
970 if (st->pts_reorder_error_count[i]) {
971 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
972 if (score < best_score) {
979 for (i = 0; i<delay; i++) {
980 if (pts_buffer[i] != AV_NOPTS_VALUE) {
981 int64_t diff = FFABS(pts_buffer[i] - dts)
982 + (uint64_t)st->pts_reorder_error[i];
983 diff = FFMAX(diff, st->pts_reorder_error[i]);
984 st->pts_reorder_error[i] = diff;
985 st->pts_reorder_error_count[i]++;
986 if (st->pts_reorder_error_count[i] > 250) {
987 st->pts_reorder_error[i] >>= 1;
988 st->pts_reorder_error_count[i] >>= 1;
995 if (dts == AV_NOPTS_VALUE)
1002 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
1003 * of the packets in a window.
1005 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
1006 AVPacketList *pkt_buffer)
1008 AVStream *st = s->streams[stream_index];
1009 int delay = st->internal->avctx->has_b_frames;
1012 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1014 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1015 pts_buffer[i] = AV_NOPTS_VALUE;
1017 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1018 if (pkt_buffer->pkt.stream_index != stream_index)
1021 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1022 pts_buffer[0] = pkt_buffer->pkt.pts;
1023 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1024 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1026 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1031 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1032 int64_t dts, int64_t pts, AVPacket *pkt)
1034 AVStream *st = s->streams[stream_index];
1035 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1036 AVPacketList *pktl_it;
1040 if (st->first_dts != AV_NOPTS_VALUE ||
1041 dts == AV_NOPTS_VALUE ||
1042 st->cur_dts == AV_NOPTS_VALUE ||
1046 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1048 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1050 if (is_relative(pts))
1053 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1054 if (pktl_it->pkt.stream_index != stream_index)
1056 if (is_relative(pktl_it->pkt.pts))
1057 pktl_it->pkt.pts += shift;
1059 if (is_relative(pktl_it->pkt.dts))
1060 pktl_it->pkt.dts += shift;
1062 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1063 st->start_time = pktl_it->pkt.pts;
1064 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1065 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1069 if (has_decode_delay_been_guessed(st)) {
1070 update_dts_from_pts(s, stream_index, pktl);
1073 if (st->start_time == AV_NOPTS_VALUE) {
1074 st->start_time = pts;
1075 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1076 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1080 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1081 int stream_index, int duration)
1083 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1084 int64_t cur_dts = RELATIVE_TS_BASE;
1086 if (st->first_dts != AV_NOPTS_VALUE) {
1087 if (st->update_initial_durations_done)
1089 st->update_initial_durations_done = 1;
1090 cur_dts = st->first_dts;
1091 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1092 if (pktl->pkt.stream_index == stream_index) {
1093 if (pktl->pkt.pts != pktl->pkt.dts ||
1094 pktl->pkt.dts != AV_NOPTS_VALUE ||
1097 cur_dts -= duration;
1100 if (pktl && pktl->pkt.dts != st->first_dts) {
1101 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1102 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1106 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1109 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1110 st->first_dts = cur_dts;
1111 } else if (st->cur_dts != RELATIVE_TS_BASE)
1114 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1115 if (pktl->pkt.stream_index != stream_index)
1117 if (pktl->pkt.pts == pktl->pkt.dts &&
1118 (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts) &&
1119 !pktl->pkt.duration) {
1120 pktl->pkt.dts = cur_dts;
1121 if (!st->internal->avctx->has_b_frames)
1122 pktl->pkt.pts = cur_dts;
1123 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1124 pktl->pkt.duration = duration;
1127 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1130 st->cur_dts = cur_dts;
1133 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1134 AVCodecParserContext *pc, AVPacket *pkt,
1135 int64_t next_dts, int64_t next_pts)
1137 int num, den, presentation_delayed, delay, i;
1139 AVRational duration;
1140 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1141 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1143 if (s->flags & AVFMT_FLAG_NOFILLIN)
1146 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1147 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1148 if (st->last_dts_for_order_check <= pkt->dts) {
1151 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1152 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1154 st->last_dts_for_order_check);
1155 st->dts_misordered++;
1157 if (st->dts_ordered + st->dts_misordered > 250) {
1158 st->dts_ordered >>= 1;
1159 st->dts_misordered >>= 1;
1163 st->last_dts_for_order_check = pkt->dts;
1164 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1165 pkt->dts = AV_NOPTS_VALUE;
1168 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1169 pkt->dts = AV_NOPTS_VALUE;
1171 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1172 && !st->internal->avctx->has_b_frames)
1173 //FIXME Set low_delay = 0 when has_b_frames = 1
1174 st->internal->avctx->has_b_frames = 1;
1176 /* do we have a video B-frame ? */
1177 delay = st->internal->avctx->has_b_frames;
1178 presentation_delayed = 0;
1180 /* XXX: need has_b_frame, but cannot get it if the codec is
1181 * not initialized */
1183 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1184 presentation_delayed = 1;
1186 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1187 st->pts_wrap_bits < 63 &&
1188 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1189 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1190 pkt->dts -= 1LL << st->pts_wrap_bits;
1192 pkt->pts += 1LL << st->pts_wrap_bits;
1195 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1196 * We take the conservative approach and discard both.
1197 * Note: If this is misbehaving for an H.264 file, then possibly
1198 * presentation_delayed is not set correctly. */
1199 if (delay == 1 && pkt->dts == pkt->pts &&
1200 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1201 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1202 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1203 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1204 pkt->dts = AV_NOPTS_VALUE;
1207 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1208 if (pkt->duration == 0) {
1209 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1211 duration = (AVRational) {num, den};
1212 pkt->duration = av_rescale_rnd(1,
1213 num * (int64_t) st->time_base.den,
1214 den * (int64_t) st->time_base.num,
1219 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1220 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1222 /* Correct timestamps with byte offset if demuxers only have timestamps
1223 * on packet boundaries */
1224 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1225 /* this will estimate bitrate based on this frame's duration and size */
1226 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1227 if (pkt->pts != AV_NOPTS_VALUE)
1229 if (pkt->dts != AV_NOPTS_VALUE)
1233 /* This may be redundant, but it should not hurt. */
1234 if (pkt->dts != AV_NOPTS_VALUE &&
1235 pkt->pts != AV_NOPTS_VALUE &&
1236 pkt->pts > pkt->dts)
1237 presentation_delayed = 1;
1239 if (s->debug & FF_FDEBUG_TS)
1240 av_log(s, AV_LOG_TRACE,
1241 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1242 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1243 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1245 /* Interpolate PTS and DTS if they are not present. We skip H264
1246 * currently because delay and has_b_frames are not reliably set. */
1247 if ((delay == 0 || (delay == 1 && pc)) &&
1249 if (presentation_delayed) {
1250 /* DTS = decompression timestamp */
1251 /* PTS = presentation timestamp */
1252 if (pkt->dts == AV_NOPTS_VALUE)
1253 pkt->dts = st->last_IP_pts;
1254 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1255 if (pkt->dts == AV_NOPTS_VALUE)
1256 pkt->dts = st->cur_dts;
1258 /* This is tricky: the dts must be incremented by the duration
1259 * of the frame we are displaying, i.e. the last I- or P-frame. */
1260 if (st->last_IP_duration == 0)
1261 st->last_IP_duration = pkt->duration;
1262 if (pkt->dts != AV_NOPTS_VALUE)
1263 st->cur_dts = pkt->dts + st->last_IP_duration;
1264 if (pkt->dts != AV_NOPTS_VALUE &&
1265 pkt->pts == AV_NOPTS_VALUE &&
1266 st->last_IP_duration > 0 &&
1267 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1268 next_dts != next_pts &&
1269 next_pts != AV_NOPTS_VALUE)
1270 pkt->pts = next_dts;
1272 st->last_IP_duration = pkt->duration;
1273 st->last_IP_pts = pkt->pts;
1274 /* Cannot compute PTS if not present (we can compute it only
1275 * by knowing the future. */
1276 } else if (pkt->pts != AV_NOPTS_VALUE ||
1277 pkt->dts != AV_NOPTS_VALUE ||
1280 /* presentation is not delayed : PTS and DTS are the same */
1281 if (pkt->pts == AV_NOPTS_VALUE)
1282 pkt->pts = pkt->dts;
1283 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1285 if (pkt->pts == AV_NOPTS_VALUE)
1286 pkt->pts = st->cur_dts;
1287 pkt->dts = pkt->pts;
1288 if (pkt->pts != AV_NOPTS_VALUE)
1289 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1293 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1294 st->pts_buffer[0] = pkt->pts;
1295 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1296 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1298 if(has_decode_delay_been_guessed(st))
1299 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1301 // We skipped it above so we try here.
1303 // This should happen on the first packet
1304 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1305 if (pkt->dts > st->cur_dts)
1306 st->cur_dts = pkt->dts;
1308 if (s->debug & FF_FDEBUG_TS)
1309 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1310 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1313 if (is_intra_only(st->codecpar->codec_id))
1314 pkt->flags |= AV_PKT_FLAG_KEY;
1315 #if FF_API_CONVERGENCE_DURATION
1316 FF_DISABLE_DEPRECATION_WARNINGS
1318 pkt->convergence_duration = pc->convergence_duration;
1319 FF_ENABLE_DEPRECATION_WARNINGS
1323 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1326 AVPacketList *pktl = *pkt_buf;
1327 *pkt_buf = pktl->next;
1328 av_packet_unref(&pktl->pkt);
1331 *pkt_buf_end = NULL;
1335 * Parse a packet, add all split parts to parse_queue.
1337 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1339 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1341 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1342 AVStream *st = s->streams[stream_index];
1343 uint8_t *data = pkt ? pkt->data : NULL;
1344 int size = pkt ? pkt->size : 0;
1345 int ret = 0, got_output = 0;
1348 av_init_packet(&flush_pkt);
1351 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1352 // preserve 0-size sync packets
1353 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1356 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1358 int64_t next_pts = pkt->pts;
1359 int64_t next_dts = pkt->dts;
1361 av_init_packet(&out_pkt);
1362 len = av_parser_parse2(st->parser, st->internal->avctx,
1363 &out_pkt.data, &out_pkt.size, data, size,
1364 pkt->pts, pkt->dts, pkt->pos);
1366 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1368 /* increment read pointer */
1372 got_output = !!out_pkt.size;
1377 if (pkt->side_data) {
1378 out_pkt.side_data = pkt->side_data;
1379 out_pkt.side_data_elems = pkt->side_data_elems;
1380 pkt->side_data = NULL;
1381 pkt->side_data_elems = 0;
1384 /* set the duration */
1385 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1386 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1387 if (st->internal->avctx->sample_rate > 0) {
1389 av_rescale_q_rnd(st->parser->duration,
1390 (AVRational) { 1, st->internal->avctx->sample_rate },
1396 out_pkt.stream_index = st->index;
1397 out_pkt.pts = st->parser->pts;
1398 out_pkt.dts = st->parser->dts;
1399 out_pkt.pos = st->parser->pos;
1401 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1402 out_pkt.pos = st->parser->frame_offset;
1404 if (st->parser->key_frame == 1 ||
1405 (st->parser->key_frame == -1 &&
1406 st->parser->pict_type == AV_PICTURE_TYPE_I))
1407 out_pkt.flags |= AV_PKT_FLAG_KEY;
1409 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1410 out_pkt.flags |= AV_PKT_FLAG_KEY;
1412 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1414 ret = add_to_pktbuf(&s->internal->parse_queue, &out_pkt,
1415 &s->internal->parse_queue_end, 1);
1416 av_packet_unref(&out_pkt);
1421 /* end of the stream => close and free the parser */
1422 if (pkt == &flush_pkt) {
1423 av_parser_close(st->parser);
1428 av_packet_unref(pkt);
1432 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1433 AVPacketList **pkt_buffer_end,
1437 av_assert0(*pkt_buffer);
1440 *pkt_buffer = pktl->next;
1442 *pkt_buffer_end = NULL;
1447 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1449 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1452 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1454 int ret = 0, i, got_packet = 0;
1455 AVDictionary *metadata = NULL;
1457 av_init_packet(pkt);
1459 while (!got_packet && !s->internal->parse_queue) {
1463 /* read next packet */
1464 ret = ff_read_packet(s, &cur_pkt);
1466 if (ret == AVERROR(EAGAIN))
1468 /* flush the parsers */
1469 for (i = 0; i < s->nb_streams; i++) {
1471 if (st->parser && st->need_parsing)
1472 parse_packet(s, NULL, st->index);
1474 /* all remaining packets are now in parse_queue =>
1475 * really terminate parsing */
1479 st = s->streams[cur_pkt.stream_index];
1481 /* update context if required */
1482 if (st->internal->need_context_update) {
1483 if (avcodec_is_open(st->internal->avctx)) {
1484 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1485 avcodec_close(st->internal->avctx);
1486 st->info->found_decoder = 0;
1489 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1493 #if FF_API_LAVF_AVCTX
1494 FF_DISABLE_DEPRECATION_WARNINGS
1495 /* update deprecated public codec context */
1496 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
1499 FF_ENABLE_DEPRECATION_WARNINGS
1502 st->internal->need_context_update = 0;
1505 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1506 cur_pkt.dts != AV_NOPTS_VALUE &&
1507 cur_pkt.pts < cur_pkt.dts) {
1508 av_log(s, AV_LOG_WARNING,
1509 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1510 cur_pkt.stream_index,
1511 av_ts2str(cur_pkt.pts),
1512 av_ts2str(cur_pkt.dts),
1515 if (s->debug & FF_FDEBUG_TS)
1516 av_log(s, AV_LOG_DEBUG,
1517 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1518 cur_pkt.stream_index,
1519 av_ts2str(cur_pkt.pts),
1520 av_ts2str(cur_pkt.dts),
1521 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1523 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1524 st->parser = av_parser_init(st->codecpar->codec_id);
1526 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1527 "%s, packets or times may be invalid.\n",
1528 avcodec_get_name(st->codecpar->codec_id));
1529 /* no parser available: just output the raw packets */
1530 st->need_parsing = AVSTREAM_PARSE_NONE;
1531 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1532 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1533 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1534 st->parser->flags |= PARSER_FLAG_ONCE;
1535 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1536 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1539 if (!st->need_parsing || !st->parser) {
1540 /* no parsing needed: we just output the packet as is */
1542 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1543 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1544 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1545 ff_reduce_index(s, st->index);
1546 av_add_index_entry(st, pkt->pos, pkt->dts,
1547 0, 0, AVINDEX_KEYFRAME);
1550 } else if (st->discard < AVDISCARD_ALL) {
1551 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1553 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1554 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1555 st->codecpar->channels = st->internal->avctx->channels;
1556 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1557 st->codecpar->codec_id = st->internal->avctx->codec_id;
1560 av_packet_unref(&cur_pkt);
1562 if (pkt->flags & AV_PKT_FLAG_KEY)
1563 st->skip_to_keyframe = 0;
1564 if (st->skip_to_keyframe) {
1565 av_packet_unref(&cur_pkt);
1573 if (!got_packet && s->internal->parse_queue)
1574 ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1577 AVStream *st = s->streams[pkt->stream_index];
1578 int discard_padding = 0;
1579 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1580 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1581 int64_t sample = ts_to_samples(st, pts);
1582 int duration = ts_to_samples(st, pkt->duration);
1583 int64_t end_sample = sample + duration;
1584 if (duration > 0 && end_sample >= st->first_discard_sample &&
1585 sample < st->last_discard_sample)
1586 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1588 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1589 st->skip_samples = st->start_skip_samples;
1590 if (st->skip_samples || discard_padding) {
1591 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1593 AV_WL32(p, st->skip_samples);
1594 AV_WL32(p + 4, discard_padding);
1595 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1597 st->skip_samples = 0;
1600 if (st->inject_global_side_data) {
1601 for (i = 0; i < st->nb_side_data; i++) {
1602 AVPacketSideData *src_sd = &st->side_data[i];
1605 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1608 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1610 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1614 memcpy(dst_data, src_sd->data, src_sd->size);
1616 st->inject_global_side_data = 0;
1619 if (!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1620 av_packet_merge_side_data(pkt);
1623 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1625 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1626 av_dict_copy(&s->metadata, metadata, 0);
1627 av_dict_free(&metadata);
1628 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1631 #if FF_API_LAVF_AVCTX
1632 update_stream_avctx(s);
1635 if (s->debug & FF_FDEBUG_TS)
1636 av_log(s, AV_LOG_DEBUG,
1637 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1638 "size=%d, duration=%"PRId64", flags=%d\n",
1640 av_ts2str(pkt->pts),
1641 av_ts2str(pkt->dts),
1642 pkt->size, pkt->duration, pkt->flags);
1647 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1649 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1655 ret = s->internal->packet_buffer
1656 ? read_from_packet_buffer(&s->internal->packet_buffer,
1657 &s->internal->packet_buffer_end, pkt)
1658 : read_frame_internal(s, pkt);
1665 AVPacketList *pktl = s->internal->packet_buffer;
1668 AVPacket *next_pkt = &pktl->pkt;
1670 if (next_pkt->dts != AV_NOPTS_VALUE) {
1671 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1672 // last dts seen for this stream. if any of packets following
1673 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1674 int64_t last_dts = next_pkt->dts;
1675 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1676 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1677 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1678 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) {
1680 next_pkt->pts = pktl->pkt.dts;
1682 if (last_dts != AV_NOPTS_VALUE) {
1683 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1684 last_dts = pktl->pkt.dts;
1689 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1690 // Fixing the last reference frame had none pts issue (For MXF etc).
1691 // We only do this when
1693 // 2. we are not able to resolve a pts value for current packet.
1694 // 3. the packets for this stream at the end of the files had valid dts.
1695 next_pkt->pts = last_dts + next_pkt->duration;
1697 pktl = s->internal->packet_buffer;
1700 /* read packet from packet buffer, if there is data */
1701 st = s->streams[next_pkt->stream_index];
1702 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1703 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1704 ret = read_from_packet_buffer(&s->internal->packet_buffer,
1705 &s->internal->packet_buffer_end, pkt);
1710 ret = read_frame_internal(s, pkt);
1712 if (pktl && ret != AVERROR(EAGAIN)) {
1719 ret = add_to_pktbuf(&s->internal->packet_buffer, pkt,
1720 &s->internal->packet_buffer_end, 1);
1721 av_packet_unref(pkt);
1728 st = s->streams[pkt->stream_index];
1729 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1730 ff_reduce_index(s, st->index);
1731 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1734 if (is_relative(pkt->dts))
1735 pkt->dts -= RELATIVE_TS_BASE;
1736 if (is_relative(pkt->pts))
1737 pkt->pts -= RELATIVE_TS_BASE;
1742 /* XXX: suppress the packet queue */
1743 static void flush_packet_queue(AVFormatContext *s)
1747 free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
1748 free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1749 free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1751 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1754 /*******************************************************/
1757 int av_find_default_stream_index(AVFormatContext *s)
1761 int best_stream = 0;
1762 int best_score = INT_MIN;
1764 if (s->nb_streams <= 0)
1766 for (i = 0; i < s->nb_streams; i++) {
1769 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1770 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1772 if (st->codecpar->width && st->codecpar->height)
1776 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1777 if (st->codecpar->sample_rate)
1780 if (st->codec_info_nb_frames)
1783 if (st->discard != AVDISCARD_ALL)
1786 if (score > best_score) {
1794 /** Flush the frame reader. */
1795 void ff_read_frame_flush(AVFormatContext *s)
1800 flush_packet_queue(s);
1802 /* Reset read state for each stream. */
1803 for (i = 0; i < s->nb_streams; i++) {
1807 av_parser_close(st->parser);
1810 st->last_IP_pts = AV_NOPTS_VALUE;
1811 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1812 if (st->first_dts == AV_NOPTS_VALUE)
1813 st->cur_dts = RELATIVE_TS_BASE;
1815 /* We set the current DTS to an unspecified origin. */
1816 st->cur_dts = AV_NOPTS_VALUE;
1818 st->probe_packets = MAX_PROBE_PACKETS;
1820 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1821 st->pts_buffer[j] = AV_NOPTS_VALUE;
1823 if (s->internal->inject_global_side_data)
1824 st->inject_global_side_data = 1;
1826 st->skip_samples = 0;
1830 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1834 for (i = 0; i < s->nb_streams; i++) {
1835 AVStream *st = s->streams[i];
1838 av_rescale(timestamp,
1839 st->time_base.den * (int64_t) ref_st->time_base.num,
1840 st->time_base.num * (int64_t) ref_st->time_base.den);
1844 void ff_reduce_index(AVFormatContext *s, int stream_index)
1846 AVStream *st = s->streams[stream_index];
1847 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1849 if ((unsigned) st->nb_index_entries >= max_entries) {
1851 for (i = 0; 2 * i < st->nb_index_entries; i++)
1852 st->index_entries[i] = st->index_entries[2 * i];
1853 st->nb_index_entries = i;
1857 int ff_add_index_entry(AVIndexEntry **index_entries,
1858 int *nb_index_entries,
1859 unsigned int *index_entries_allocated_size,
1860 int64_t pos, int64_t timestamp,
1861 int size, int distance, int flags)
1863 AVIndexEntry *entries, *ie;
1866 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1869 if (timestamp == AV_NOPTS_VALUE)
1870 return AVERROR(EINVAL);
1872 if (size < 0 || size > 0x3FFFFFFF)
1873 return AVERROR(EINVAL);
1875 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1876 timestamp -= RELATIVE_TS_BASE;
1878 entries = av_fast_realloc(*index_entries,
1879 index_entries_allocated_size,
1880 (*nb_index_entries + 1) *
1881 sizeof(AVIndexEntry));
1885 *index_entries = entries;
1887 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1888 timestamp, AVSEEK_FLAG_ANY);
1891 index = (*nb_index_entries)++;
1892 ie = &entries[index];
1893 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1895 ie = &entries[index];
1896 if (ie->timestamp != timestamp) {
1897 if (ie->timestamp <= timestamp)
1899 memmove(entries + index + 1, entries + index,
1900 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1901 (*nb_index_entries)++;
1902 } else if (ie->pos == pos && distance < ie->min_distance)
1903 // do not reduce the distance
1904 distance = ie->min_distance;
1908 ie->timestamp = timestamp;
1909 ie->min_distance = distance;
1916 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
1917 int size, int distance, int flags)
1919 timestamp = wrap_timestamp(st, timestamp);
1920 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1921 &st->index_entries_allocated_size, pos,
1922 timestamp, size, distance, flags);
1925 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1926 int64_t wanted_timestamp, int flags)
1934 // Optimize appending index entries at the end.
1935 if (b && entries[b - 1].timestamp < wanted_timestamp)
1940 timestamp = entries[m].timestamp;
1941 if (timestamp >= wanted_timestamp)
1943 if (timestamp <= wanted_timestamp)
1946 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1948 if (!(flags & AVSEEK_FLAG_ANY))
1949 while (m >= 0 && m < nb_entries &&
1950 !(entries[m].flags & AVINDEX_KEYFRAME))
1951 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1953 if (m == nb_entries)
1958 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
1961 int64_t pos_delta = 0;
1963 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
1964 const char *proto = avio_find_protocol_name(s->filename);
1967 av_log(s, AV_LOG_INFO,
1968 "Protocol name not provided, cannot determine if input is local or "
1969 "a network protocol, buffers and access patterns cannot be configured "
1970 "optimally without knowing the protocol\n");
1973 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
1976 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
1977 AVStream *st1 = s->streams[ist1];
1978 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
1979 AVStream *st2 = s->streams[ist2];
1985 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
1986 AVIndexEntry *e1 = &st1->index_entries[i1];
1987 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
1989 skip = FFMAX(skip, e1->size);
1990 for (; i2 < st2->nb_index_entries; i2++) {
1991 AVIndexEntry *e2 = &st2->index_entries[i2];
1992 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
1993 if (e2_pts - e1_pts < time_tolerance)
1995 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
2003 /* XXX This could be adjusted depending on protocol*/
2004 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
2005 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
2006 ffio_set_buf_size(s->pb, pos_delta);
2007 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
2010 if (skip < (1<<23)) {
2011 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
2015 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2017 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2018 wanted_timestamp, flags);
2021 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2022 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2024 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2025 if (stream_index >= 0)
2026 ts = wrap_timestamp(s->streams[stream_index], ts);
2030 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2031 int64_t target_ts, int flags)
2033 AVInputFormat *avif = s->iformat;
2034 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2035 int64_t ts_min, ts_max, ts;
2040 if (stream_index < 0)
2043 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2046 ts_min = AV_NOPTS_VALUE;
2047 pos_limit = -1; // GCC falsely says it may be uninitialized.
2049 st = s->streams[stream_index];
2050 if (st->index_entries) {
2053 /* FIXME: Whole function must be checked for non-keyframe entries in
2054 * index case, especially read_timestamp(). */
2055 index = av_index_search_timestamp(st, target_ts,
2056 flags | AVSEEK_FLAG_BACKWARD);
2057 index = FFMAX(index, 0);
2058 e = &st->index_entries[index];
2060 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2062 ts_min = e->timestamp;
2063 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2064 pos_min, av_ts2str(ts_min));
2066 av_assert1(index == 0);
2069 index = av_index_search_timestamp(st, target_ts,
2070 flags & ~AVSEEK_FLAG_BACKWARD);
2071 av_assert0(index < st->nb_index_entries);
2073 e = &st->index_entries[index];
2074 av_assert1(e->timestamp >= target_ts);
2076 ts_max = e->timestamp;
2077 pos_limit = pos_max - e->min_distance;
2078 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2079 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2083 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2084 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2089 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2092 ff_read_frame_flush(s);
2093 ff_update_cur_dts(s, st, ts);
2098 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2099 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2101 int64_t step = 1024;
2102 int64_t limit, ts_max;
2103 int64_t filesize = avio_size(s->pb);
2104 int64_t pos_max = filesize - 1;
2107 pos_max = FFMAX(0, (pos_max) - step);
2108 ts_max = ff_read_timestamp(s, stream_index,
2109 &pos_max, limit, read_timestamp);
2111 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2112 if (ts_max == AV_NOPTS_VALUE)
2116 int64_t tmp_pos = pos_max + 1;
2117 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2118 &tmp_pos, INT64_MAX, read_timestamp);
2119 if (tmp_ts == AV_NOPTS_VALUE)
2121 av_assert0(tmp_pos > pos_max);
2124 if (tmp_pos >= filesize)
2136 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2137 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2138 int64_t ts_min, int64_t ts_max,
2139 int flags, int64_t *ts_ret,
2140 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2141 int64_t *, int64_t))
2148 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2150 if (ts_min == AV_NOPTS_VALUE) {
2151 pos_min = s->internal->data_offset;
2152 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2153 if (ts_min == AV_NOPTS_VALUE)
2157 if (ts_min >= target_ts) {
2162 if (ts_max == AV_NOPTS_VALUE) {
2163 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2165 pos_limit = pos_max;
2168 if (ts_max <= target_ts) {
2173 av_assert0(ts_min < ts_max);
2176 while (pos_min < pos_limit) {
2177 av_log(s, AV_LOG_TRACE,
2178 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2179 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2180 av_assert0(pos_limit <= pos_max);
2182 if (no_change == 0) {
2183 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2184 // interpolate position (better than dichotomy)
2185 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2187 pos_min - approximate_keyframe_distance;
2188 } else if (no_change == 1) {
2189 // bisection if interpolation did not change min / max pos last time
2190 pos = (pos_min + pos_limit) >> 1;
2192 /* linear search if bisection failed, can only happen if there
2193 * are very few or no keyframes between min/max */
2198 else if (pos > pos_limit)
2202 // May pass pos_limit instead of -1.
2203 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2208 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2209 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2210 pos_min, pos, pos_max,
2211 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2212 pos_limit, start_pos, no_change);
2213 if (ts == AV_NOPTS_VALUE) {
2214 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2217 if (target_ts <= ts) {
2218 pos_limit = start_pos - 1;
2222 if (target_ts >= ts) {
2228 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2229 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2232 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2234 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2235 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2236 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2242 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2243 int64_t pos, int flags)
2245 int64_t pos_min, pos_max;
2247 pos_min = s->internal->data_offset;
2248 pos_max = avio_size(s->pb) - 1;
2252 else if (pos > pos_max)
2255 avio_seek(s->pb, pos, SEEK_SET);
2257 s->io_repositioned = 1;
2262 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2263 int64_t timestamp, int flags)
2270 st = s->streams[stream_index];
2272 index = av_index_search_timestamp(st, timestamp, flags);
2274 if (index < 0 && st->nb_index_entries &&
2275 timestamp < st->index_entries[0].timestamp)
2278 if (index < 0 || index == st->nb_index_entries - 1) {
2282 if (st->nb_index_entries) {
2283 av_assert0(st->index_entries);
2284 ie = &st->index_entries[st->nb_index_entries - 1];
2285 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2287 ff_update_cur_dts(s, st, ie->timestamp);
2289 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2295 read_status = av_read_frame(s, &pkt);
2296 } while (read_status == AVERROR(EAGAIN));
2297 if (read_status < 0)
2299 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2300 if (pkt.flags & AV_PKT_FLAG_KEY) {
2301 av_packet_unref(&pkt);
2304 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2305 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);
2306 av_packet_unref(&pkt);
2310 av_packet_unref(&pkt);
2312 index = av_index_search_timestamp(st, timestamp, flags);
2317 ff_read_frame_flush(s);
2318 if (s->iformat->read_seek)
2319 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2321 ie = &st->index_entries[index];
2322 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2324 ff_update_cur_dts(s, st, ie->timestamp);
2329 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2330 int64_t timestamp, int flags)
2335 if (flags & AVSEEK_FLAG_BYTE) {
2336 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2338 ff_read_frame_flush(s);
2339 return seek_frame_byte(s, stream_index, timestamp, flags);
2342 if (stream_index < 0) {
2343 stream_index = av_find_default_stream_index(s);
2344 if (stream_index < 0)
2347 st = s->streams[stream_index];
2348 /* timestamp for default must be expressed in AV_TIME_BASE units */
2349 timestamp = av_rescale(timestamp, st->time_base.den,
2350 AV_TIME_BASE * (int64_t) st->time_base.num);
2353 /* first, we try the format specific seek */
2354 if (s->iformat->read_seek) {
2355 ff_read_frame_flush(s);
2356 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2362 if (s->iformat->read_timestamp &&
2363 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2364 ff_read_frame_flush(s);
2365 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2366 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2367 ff_read_frame_flush(s);
2368 return seek_frame_generic(s, stream_index, timestamp, flags);
2373 int av_seek_frame(AVFormatContext *s, int stream_index,
2374 int64_t timestamp, int flags)
2378 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2379 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2380 if ((flags & AVSEEK_FLAG_BACKWARD))
2384 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2385 flags & ~AVSEEK_FLAG_BACKWARD);
2388 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2391 ret = avformat_queue_attached_pictures(s);
2396 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2397 int64_t ts, int64_t max_ts, int flags)
2399 if (min_ts > ts || max_ts < ts)
2401 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2402 return AVERROR(EINVAL);
2405 flags |= AVSEEK_FLAG_ANY;
2406 flags &= ~AVSEEK_FLAG_BACKWARD;
2408 if (s->iformat->read_seek2) {
2410 ff_read_frame_flush(s);
2412 if (stream_index == -1 && s->nb_streams == 1) {
2413 AVRational time_base = s->streams[0]->time_base;
2414 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2415 min_ts = av_rescale_rnd(min_ts, time_base.den,
2416 time_base.num * (int64_t)AV_TIME_BASE,
2417 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2418 max_ts = av_rescale_rnd(max_ts, time_base.den,
2419 time_base.num * (int64_t)AV_TIME_BASE,
2420 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2424 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2428 ret = avformat_queue_attached_pictures(s);
2432 if (s->iformat->read_timestamp) {
2433 // try to seek via read_timestamp()
2436 // Fall back on old API if new is not implemented but old is.
2437 // Note the old API has somewhat different semantics.
2438 if (s->iformat->read_seek || 1) {
2439 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2440 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2441 if (ret<0 && ts != min_ts && max_ts != ts) {
2442 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2444 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2449 // try some generic seek like seek_frame_generic() but with new ts semantics
2450 return -1; //unreachable
2453 int avformat_flush(AVFormatContext *s)
2455 ff_read_frame_flush(s);
2459 /*******************************************************/
2462 * Return TRUE if the stream has accurate duration in any stream.
2464 * @return TRUE if the stream has accurate duration for at least one component.
2466 static int has_duration(AVFormatContext *ic)
2471 for (i = 0; i < ic->nb_streams; i++) {
2472 st = ic->streams[i];
2473 if (st->duration != AV_NOPTS_VALUE)
2476 if (ic->duration != AV_NOPTS_VALUE)
2482 * Estimate the stream timings from the one of each components.
2484 * Also computes the global bitrate if possible.
2486 static void update_stream_timings(AVFormatContext *ic)
2488 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2489 int64_t duration, duration1, filesize;
2494 start_time = INT64_MAX;
2495 start_time_text = INT64_MAX;
2496 end_time = INT64_MIN;
2497 duration = INT64_MIN;
2498 for (i = 0; i < ic->nb_streams; i++) {
2499 st = ic->streams[i];
2500 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2501 start_time1 = av_rescale_q(st->start_time, st->time_base,
2503 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2504 if (start_time1 < start_time_text)
2505 start_time_text = start_time1;
2507 start_time = FFMIN(start_time, start_time1);
2508 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2510 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2511 if (end_time1 != AV_NOPTS_VALUE && start_time1 <= INT64_MAX - end_time1) {
2512 end_time1 += start_time1;
2513 end_time = FFMAX(end_time, end_time1);
2515 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2516 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2517 p->start_time = start_time1;
2518 if (p->end_time < end_time1)
2519 p->end_time = end_time1;
2522 if (st->duration != AV_NOPTS_VALUE) {
2523 duration1 = av_rescale_q(st->duration, st->time_base,
2525 duration = FFMAX(duration, duration1);
2528 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2529 start_time = start_time_text;
2530 else if (start_time > start_time_text)
2531 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2533 if (start_time != INT64_MAX) {
2534 ic->start_time = start_time;
2535 if (end_time != INT64_MIN) {
2536 if (ic->nb_programs) {
2537 for (i = 0; i < ic->nb_programs; i++) {
2538 p = ic->programs[i];
2539 if (p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2540 duration = FFMAX(duration, p->end_time - p->start_time);
2543 duration = FFMAX(duration, end_time - start_time);
2546 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2547 ic->duration = duration;
2549 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration > 0) {
2550 /* compute the bitrate */
2551 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2552 (double) ic->duration;
2553 if (bitrate >= 0 && bitrate <= INT64_MAX)
2554 ic->bit_rate = bitrate;
2558 static void fill_all_stream_timings(AVFormatContext *ic)
2563 update_stream_timings(ic);
2564 for (i = 0; i < ic->nb_streams; i++) {
2565 st = ic->streams[i];
2566 if (st->start_time == AV_NOPTS_VALUE) {
2567 if (ic->start_time != AV_NOPTS_VALUE)
2568 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2570 if (ic->duration != AV_NOPTS_VALUE)
2571 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2577 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2579 int64_t filesize, duration;
2580 int i, show_warning = 0;
2583 /* if bit_rate is already set, we believe it */
2584 if (ic->bit_rate <= 0) {
2585 int64_t bit_rate = 0;
2586 for (i = 0; i < ic->nb_streams; i++) {
2587 st = ic->streams[i];
2588 if (st->codecpar->bit_rate <= 0 && st->internal->avctx->bit_rate > 0)
2589 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
2590 if (st->codecpar->bit_rate > 0) {
2591 if (INT64_MAX - st->codecpar->bit_rate < bit_rate) {
2595 bit_rate += st->codecpar->bit_rate;
2596 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2597 // If we have a videostream with packets but without a bitrate
2598 // then consider the sum not known
2603 ic->bit_rate = bit_rate;
2606 /* if duration is already set, we believe it */
2607 if (ic->duration == AV_NOPTS_VALUE &&
2608 ic->bit_rate != 0) {
2609 filesize = ic->pb ? avio_size(ic->pb) : 0;
2610 if (filesize > ic->internal->data_offset) {
2611 filesize -= ic->internal->data_offset;
2612 for (i = 0; i < ic->nb_streams; i++) {
2613 st = ic->streams[i];
2614 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2615 && st->duration == AV_NOPTS_VALUE) {
2616 duration = av_rescale(8 * filesize, st->time_base.den,
2618 (int64_t) st->time_base.num);
2619 st->duration = duration;
2626 av_log(ic, AV_LOG_WARNING,
2627 "Estimating duration from bitrate, this may be inaccurate\n");
2630 #define DURATION_MAX_READ_SIZE 250000LL
2631 #define DURATION_MAX_RETRY 6
2633 /* only usable for MPEG-PS streams */
2634 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2636 AVPacket pkt1, *pkt = &pkt1;
2638 int num, den, read_size, i, ret;
2639 int found_duration = 0;
2641 int64_t filesize, offset, duration;
2644 /* flush packet queue */
2645 flush_packet_queue(ic);
2647 for (i = 0; i < ic->nb_streams; i++) {
2648 st = ic->streams[i];
2649 if (st->start_time == AV_NOPTS_VALUE &&
2650 st->first_dts == AV_NOPTS_VALUE &&
2651 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2652 av_log(ic, AV_LOG_WARNING,
2653 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2656 av_parser_close(st->parser);
2661 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2662 /* estimate the end time (duration) */
2663 /* XXX: may need to support wrapping */
2664 filesize = ic->pb ? avio_size(ic->pb) : 0;
2666 is_end = found_duration;
2667 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2671 avio_seek(ic->pb, offset, SEEK_SET);
2674 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2678 ret = ff_read_packet(ic, pkt);
2679 } while (ret == AVERROR(EAGAIN));
2682 read_size += pkt->size;
2683 st = ic->streams[pkt->stream_index];
2684 if (pkt->pts != AV_NOPTS_VALUE &&
2685 (st->start_time != AV_NOPTS_VALUE ||
2686 st->first_dts != AV_NOPTS_VALUE)) {
2687 if (pkt->duration == 0) {
2688 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2690 pkt->duration = av_rescale_rnd(1,
2691 num * (int64_t) st->time_base.den,
2692 den * (int64_t) st->time_base.num,
2696 duration = pkt->pts + pkt->duration;
2698 if (st->start_time != AV_NOPTS_VALUE)
2699 duration -= st->start_time;
2701 duration -= st->first_dts;
2703 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2704 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2705 st->duration = duration;
2706 st->info->last_duration = duration;
2709 av_packet_unref(pkt);
2712 /* check if all audio/video streams have valid duration */
2715 for (i = 0; i < ic->nb_streams; i++) {
2716 st = ic->streams[i];
2717 switch (st->codecpar->codec_type) {
2718 case AVMEDIA_TYPE_VIDEO:
2719 case AVMEDIA_TYPE_AUDIO:
2720 if (st->duration == AV_NOPTS_VALUE)
2727 ++retry <= DURATION_MAX_RETRY);
2729 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2731 /* warn about audio/video streams which duration could not be estimated */
2732 for (i = 0; i < ic->nb_streams; i++) {
2733 st = ic->streams[i];
2734 if (st->duration == AV_NOPTS_VALUE) {
2735 switch (st->codecpar->codec_type) {
2736 case AVMEDIA_TYPE_VIDEO:
2737 case AVMEDIA_TYPE_AUDIO:
2738 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2739 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2741 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2745 fill_all_stream_timings(ic);
2747 avio_seek(ic->pb, old_offset, SEEK_SET);
2748 for (i = 0; i < ic->nb_streams; i++) {
2751 st = ic->streams[i];
2752 st->cur_dts = st->first_dts;
2753 st->last_IP_pts = AV_NOPTS_VALUE;
2754 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2755 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2756 st->pts_buffer[j] = AV_NOPTS_VALUE;
2760 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2764 /* get the file size, if possible */
2765 if (ic->iformat->flags & AVFMT_NOFILE) {
2768 file_size = avio_size(ic->pb);
2769 file_size = FFMAX(0, file_size);
2772 if ((!strcmp(ic->iformat->name, "mpeg") ||
2773 !strcmp(ic->iformat->name, "mpegts")) &&
2774 file_size && ic->pb->seekable) {
2775 /* get accurate estimate from the PTSes */
2776 estimate_timings_from_pts(ic, old_offset);
2777 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2778 } else if (has_duration(ic)) {
2779 /* at least one component has timings - we use them for all
2781 fill_all_stream_timings(ic);
2782 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2784 /* less precise: use bitrate info */
2785 estimate_timings_from_bit_rate(ic);
2786 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2788 update_stream_timings(ic);
2792 AVStream av_unused *st;
2793 for (i = 0; i < ic->nb_streams; i++) {
2794 st = ic->streams[i];
2795 av_log(ic, AV_LOG_TRACE, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2796 (double) st->start_time * av_q2d(st->time_base),
2797 (double) st->duration * av_q2d(st->time_base));
2799 av_log(ic, AV_LOG_TRACE,
2800 "format: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2801 (double) ic->start_time / AV_TIME_BASE,
2802 (double) ic->duration / AV_TIME_BASE,
2803 (int64_t)ic->bit_rate / 1000);
2807 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2809 AVCodecContext *avctx = st->internal->avctx;
2811 #define FAIL(errmsg) do { \
2813 *errmsg_ptr = errmsg; \
2817 if ( avctx->codec_id == AV_CODEC_ID_NONE
2818 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2819 FAIL("unknown codec");
2820 switch (avctx->codec_type) {
2821 case AVMEDIA_TYPE_AUDIO:
2822 if (!avctx->frame_size && determinable_frame_size(avctx))
2823 FAIL("unspecified frame size");
2824 if (st->info->found_decoder >= 0 &&
2825 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2826 FAIL("unspecified sample format");
2827 if (!avctx->sample_rate)
2828 FAIL("unspecified sample rate");
2829 if (!avctx->channels)
2830 FAIL("unspecified number of channels");
2831 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2832 FAIL("no decodable DTS frames");
2834 case AVMEDIA_TYPE_VIDEO:
2836 FAIL("unspecified size");
2837 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2838 FAIL("unspecified pixel format");
2839 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2840 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2841 FAIL("no frame in rv30/40 and no sar");
2843 case AVMEDIA_TYPE_SUBTITLE:
2844 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2845 FAIL("unspecified size");
2847 case AVMEDIA_TYPE_DATA:
2848 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2854 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2855 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2856 AVDictionary **options)
2858 AVCodecContext *avctx = st->internal->avctx;
2859 const AVCodec *codec;
2860 int got_picture = 1, ret = 0;
2861 AVFrame *frame = av_frame_alloc();
2862 AVSubtitle subtitle;
2863 AVPacket pkt = *avpkt;
2864 int do_skip_frame = 0;
2865 enum AVDiscard skip_frame;
2868 return AVERROR(ENOMEM);
2870 if (!avcodec_is_open(avctx) &&
2871 st->info->found_decoder <= 0 &&
2872 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
2873 AVDictionary *thread_opt = NULL;
2875 codec = find_decoder(s, st, st->codecpar->codec_id);
2878 st->info->found_decoder = -st->codecpar->codec_id;
2883 /* Force thread count to 1 since the H.264 decoder will not extract
2884 * SPS and PPS to extradata during multi-threaded decoding. */
2885 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2886 if (s->codec_whitelist)
2887 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
2888 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
2890 av_dict_free(&thread_opt);
2892 st->info->found_decoder = -avctx->codec_id;
2895 st->info->found_decoder = 1;
2896 } else if (!st->info->found_decoder)
2897 st->info->found_decoder = 1;
2899 if (st->info->found_decoder < 0) {
2904 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
2906 skip_frame = avctx->skip_frame;
2907 avctx->skip_frame = AVDISCARD_ALL;
2910 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2912 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
2913 (!st->codec_info_nb_frames &&
2914 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
2916 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2917 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2918 ret = avcodec_send_packet(avctx, &pkt);
2919 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
2923 ret = avcodec_receive_frame(avctx, frame);
2926 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
2928 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2929 ret = avcodec_decode_subtitle2(avctx, &subtitle,
2930 &got_picture, &pkt);
2936 st->nb_decoded_frames++;
2941 if (!pkt.data && !got_picture)
2945 if (do_skip_frame) {
2946 avctx->skip_frame = skip_frame;
2949 av_frame_free(&frame);
2953 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2955 while (tags->id != AV_CODEC_ID_NONE) {
2963 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2966 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2967 if (tag == tags[i].tag)
2969 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2970 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2972 return AV_CODEC_ID_NONE;
2975 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2977 if (bps <= 0 || bps > 64)
2978 return AV_CODEC_ID_NONE;
2983 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2985 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2987 return AV_CODEC_ID_NONE;
2992 if (sflags & (1 << (bps - 1))) {
2995 return AV_CODEC_ID_PCM_S8;
2997 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2999 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
3001 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
3003 return be ? AV_CODEC_ID_PCM_S64BE : AV_CODEC_ID_PCM_S64LE;
3005 return AV_CODEC_ID_NONE;
3010 return AV_CODEC_ID_PCM_U8;
3012 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
3014 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
3016 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
3018 return AV_CODEC_ID_NONE;
3024 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3027 if (!av_codec_get_tag2(tags, id, &tag))
3032 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3036 for (i = 0; tags && tags[i]; i++) {
3037 const AVCodecTag *codec_tags = tags[i];
3038 while (codec_tags->id != AV_CODEC_ID_NONE) {
3039 if (codec_tags->id == id) {
3040 *tag = codec_tags->tag;
3049 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3052 for (i = 0; tags && tags[i]; i++) {
3053 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3054 if (id != AV_CODEC_ID_NONE)
3057 return AV_CODEC_ID_NONE;
3060 static void compute_chapters_end(AVFormatContext *s)
3063 int64_t max_time = 0;
3065 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3066 max_time = s->duration +
3067 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3069 for (i = 0; i < s->nb_chapters; i++)
3070 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3071 AVChapter *ch = s->chapters[i];
3072 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3076 for (j = 0; j < s->nb_chapters; j++) {
3077 AVChapter *ch1 = s->chapters[j];
3078 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3080 if (j != i && next_start > ch->start && next_start < end)
3083 ch->end = (end == INT64_MAX) ? ch->start : end;
3087 static int get_std_framerate(int i)
3090 return (i + 1) * 1001;
3094 return (i + 31) * 1001 * 12;
3098 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3102 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3105 /* Is the time base unreliable?
3106 * This is a heuristic to balance between quick acceptance of the values in
3107 * the headers vs. some extra checks.
3108 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3109 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3110 * And there are "variable" fps files this needs to detect as well. */
3111 static int tb_unreliable(AVCodecContext *c)
3113 if (c->time_base.den >= 101LL * c->time_base.num ||
3114 c->time_base.den < 5LL * c->time_base.num ||
3115 // c->codec_tag == AV_RL32("DIVX") ||
3116 // c->codec_tag == AV_RL32("XVID") ||
3117 c->codec_tag == AV_RL32("mp4v") ||
3118 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3119 c->codec_id == AV_CODEC_ID_GIF ||
3120 c->codec_id == AV_CODEC_ID_HEVC ||
3121 c->codec_id == AV_CODEC_ID_H264)
3126 int ff_alloc_extradata(AVCodecParameters *par, int size)
3130 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
3131 par->extradata = NULL;
3132 par->extradata_size = 0;
3133 return AVERROR(EINVAL);
3135 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3136 if (par->extradata) {
3137 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3138 par->extradata_size = size;
3141 par->extradata_size = 0;
3142 ret = AVERROR(ENOMEM);
3147 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3149 int ret = ff_alloc_extradata(par, size);
3152 ret = avio_read(pb, par->extradata, size);
3154 av_freep(&par->extradata);
3155 par->extradata_size = 0;
3156 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3157 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3163 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3166 int64_t last = st->info->last_dts;
3168 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3169 && ts - (uint64_t)last < INT64_MAX) {
3170 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3171 int64_t duration = ts - last;
3173 if (!st->info->duration_error)
3174 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3175 if (!st->info->duration_error)
3176 return AVERROR(ENOMEM);
3178 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3179 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3180 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3181 if (st->info->duration_error[0][1][i] < 1e10) {
3182 int framerate = get_std_framerate(i);
3183 double sdts = dts*framerate/(1001*12);
3184 for (j= 0; j<2; j++) {
3185 int64_t ticks = llrint(sdts+j*0.5);
3186 double error= sdts - ticks + j*0.5;
3187 st->info->duration_error[j][0][i] += error;
3188 st->info->duration_error[j][1][i] += error*error;
3192 st->info->duration_count++;
3193 st->info->rfps_duration_sum += duration;
3195 if (st->info->duration_count % 10 == 0) {
3196 int n = st->info->duration_count;
3197 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3198 if (st->info->duration_error[0][1][i] < 1e10) {
3199 double a0 = st->info->duration_error[0][0][i] / n;
3200 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3201 double a1 = st->info->duration_error[1][0][i] / n;
3202 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3203 if (error0 > 0.04 && error1 > 0.04) {
3204 st->info->duration_error[0][1][i] = 2e10;
3205 st->info->duration_error[1][1][i] = 2e10;
3211 // ignore the first 4 values, they might have some random jitter
3212 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3213 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3215 if (ts != AV_NOPTS_VALUE)
3216 st->info->last_dts = ts;
3221 void ff_rfps_calculate(AVFormatContext *ic)
3225 for (i = 0; i < ic->nb_streams; i++) {
3226 AVStream *st = ic->streams[i];
3228 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3230 // the check for tb_unreliable() is not completely correct, since this is not about handling
3231 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3232 // ipmovie.c produces.
3233 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)
3234 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);
3235 if (st->info->duration_count>1 && !st->r_frame_rate.num
3236 && tb_unreliable(st->internal->avctx)) {
3238 double best_error= 0.01;
3239 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3241 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3244 if (st->info->codec_info_duration &&
3245 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3247 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3250 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3253 for (k= 0; k<2; k++) {
3254 int n = st->info->duration_count;
3255 double a= st->info->duration_error[k][0][j] / n;
3256 double error= st->info->duration_error[k][1][j]/n - a*a;
3258 if (error < best_error && best_error> 0.000000001) {
3260 num = get_std_framerate(j);
3263 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3266 // do not increase frame rate by more than 1 % in order to match a standard rate.
3267 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3268 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3270 if ( !st->avg_frame_rate.num
3271 && st->r_frame_rate.num && st->info->rfps_duration_sum
3272 && st->info->codec_info_duration <= 0
3273 && st->info->duration_count > 2
3274 && 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
3276 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3277 st->avg_frame_rate = st->r_frame_rate;
3280 av_freep(&st->info->duration_error);
3281 st->info->last_dts = AV_NOPTS_VALUE;
3282 st->info->duration_count = 0;
3283 st->info->rfps_duration_sum = 0;
3287 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3289 int i, count = 0, ret = 0, j;
3292 AVCodecContext *avctx;
3293 AVPacket pkt1, *pkt;
3294 int64_t old_offset = avio_tell(ic->pb);
3295 // new streams might appear, no options for those
3296 int orig_nb_streams = ic->nb_streams;
3298 int64_t max_analyze_duration = ic->max_analyze_duration;
3299 int64_t max_stream_analyze_duration;
3300 int64_t max_subtitle_analyze_duration;
3301 int64_t probesize = ic->probesize;
3302 int eof_reached = 0;
3304 flush_codecs = probesize > 0;
3306 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3308 max_stream_analyze_duration = max_analyze_duration;
3309 max_subtitle_analyze_duration = max_analyze_duration;
3310 if (!max_analyze_duration) {
3311 max_stream_analyze_duration =
3312 max_analyze_duration = 5*AV_TIME_BASE;
3313 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3314 if (!strcmp(ic->iformat->name, "flv"))
3315 max_stream_analyze_duration = 90*AV_TIME_BASE;
3316 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3317 max_stream_analyze_duration = 7*AV_TIME_BASE;
3321 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3322 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3324 for (i = 0; i < ic->nb_streams; i++) {
3325 const AVCodec *codec;
3326 AVDictionary *thread_opt = NULL;
3327 st = ic->streams[i];
3328 avctx = st->internal->avctx;
3330 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3331 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3332 /* if (!st->time_base.num)
3334 if (!avctx->time_base.num)
3335 avctx->time_base = st->time_base;
3337 // only for the split stuff
3338 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3339 st->parser = av_parser_init(st->codecpar->codec_id);
3341 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3342 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3343 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3344 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3346 } else if (st->need_parsing) {
3347 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3348 "%s, packets or times may be invalid.\n",
3349 avcodec_get_name(st->codecpar->codec_id));
3353 /* check if the caller has overridden the codec id */
3354 #if FF_API_LAVF_AVCTX
3355 FF_DISABLE_DEPRECATION_WARNINGS
3356 if (st->codec->codec_id != st->internal->orig_codec_id) {
3357 st->codecpar->codec_id = st->codec->codec_id;
3358 st->codecpar->codec_type = st->codec->codec_type;
3359 st->internal->orig_codec_id = st->codec->codec_id;
3361 FF_ENABLE_DEPRECATION_WARNINGS
3363 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3364 st->internal->orig_codec_id = st->codecpar->codec_id;
3366 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3368 goto find_stream_info_err;
3369 if (st->request_probe <= 0)
3370 st->internal->avctx_inited = 1;
3372 codec = find_decoder(ic, st, st->codecpar->codec_id);
3374 /* Force thread count to 1 since the H.264 decoder will not extract
3375 * SPS and PPS to extradata during multi-threaded decoding. */
3376 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3378 if (ic->codec_whitelist)
3379 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3381 /* Ensure that subtitle_header is properly set. */
3382 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3383 && codec && !avctx->codec) {
3384 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3385 av_log(ic, AV_LOG_WARNING,
3386 "Failed to open codec in av_find_stream_info\n");
3389 // Try to just open decoders, in case this is enough to get parameters.
3390 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3391 if (codec && !avctx->codec)
3392 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3393 av_log(ic, AV_LOG_WARNING,
3394 "Failed to open codec in av_find_stream_info\n");
3397 av_dict_free(&thread_opt);
3400 for (i = 0; i < ic->nb_streams; i++) {
3401 #if FF_API_R_FRAME_RATE
3402 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3404 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3405 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3410 int analyzed_all_streams;
3411 if (ff_check_interrupt(&ic->interrupt_callback)) {
3413 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3417 /* check if one codec still needs to be handled */
3418 for (i = 0; i < ic->nb_streams; i++) {
3419 int fps_analyze_framecount = 20;
3421 st = ic->streams[i];
3422 if (!has_codec_parameters(st, NULL))
3424 /* If the timebase is coarse (like the usual millisecond precision
3425 * of mkv), we need to analyze more frames to reliably arrive at
3426 * the correct fps. */
3427 if (av_q2d(st->time_base) > 0.0005)
3428 fps_analyze_framecount *= 2;
3429 if (!tb_unreliable(st->internal->avctx))
3430 fps_analyze_framecount = 0;
3431 if (ic->fps_probe_size >= 0)
3432 fps_analyze_framecount = ic->fps_probe_size;
3433 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3434 fps_analyze_framecount = 0;
3435 /* variable fps and no guess at the real fps */
3436 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3437 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3438 int count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3439 st->info->codec_info_duration_fields/2 :
3440 st->info->duration_count;
3441 if (count < fps_analyze_framecount)
3444 if (st->parser && st->parser->parser->split &&
3445 !st->internal->avctx->extradata)
3447 if (st->first_dts == AV_NOPTS_VALUE &&
3448 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3449 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3450 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3451 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3454 analyzed_all_streams = 0;
3455 if (i == ic->nb_streams) {
3456 analyzed_all_streams = 1;
3457 /* NOTE: If the format has no header, then we need to read some
3458 * packets to get most of the streams, so we cannot stop here. */
3459 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3460 /* If we found the info for all the codecs, we can stop. */
3462 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3467 /* We did not get all the codec info, but we read too much data. */
3468 if (read_size >= probesize) {
3470 av_log(ic, AV_LOG_DEBUG,
3471 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3472 for (i = 0; i < ic->nb_streams; i++)
3473 if (!ic->streams[i]->r_frame_rate.num &&
3474 ic->streams[i]->info->duration_count <= 1 &&
3475 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3476 strcmp(ic->iformat->name, "image2"))
3477 av_log(ic, AV_LOG_WARNING,
3478 "Stream #%d: not enough frames to estimate rate; "
3479 "consider increasing probesize\n", i);
3483 /* NOTE: A new stream can be added there if no header in file
3484 * (AVFMTCTX_NOHEADER). */
3485 ret = read_frame_internal(ic, &pkt1);
3486 if (ret == AVERROR(EAGAIN))
3497 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3498 ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
3499 &ic->internal->packet_buffer_end, 0);
3501 goto find_stream_info_err;
3504 st = ic->streams[pkt->stream_index];
3505 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3506 read_size += pkt->size;
3508 avctx = st->internal->avctx;
3509 if (!st->internal->avctx_inited) {
3510 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3512 goto find_stream_info_err;
3513 st->internal->avctx_inited = 1;
3516 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3517 /* check for non-increasing dts */
3518 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3519 st->info->fps_last_dts >= pkt->dts) {
3520 av_log(ic, AV_LOG_DEBUG,
3521 "Non-increasing DTS in stream %d: packet %d with DTS "
3522 "%"PRId64", packet %d with DTS %"PRId64"\n",
3523 st->index, st->info->fps_last_dts_idx,
3524 st->info->fps_last_dts, st->codec_info_nb_frames,
3526 st->info->fps_first_dts =
3527 st->info->fps_last_dts = AV_NOPTS_VALUE;
3529 /* Check for a discontinuity in dts. If the difference in dts
3530 * is more than 1000 times the average packet duration in the
3531 * sequence, we treat it as a discontinuity. */
3532 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3533 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3534 (pkt->dts - st->info->fps_last_dts) / 1000 >
3535 (st->info->fps_last_dts - st->info->fps_first_dts) /
3536 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3537 av_log(ic, AV_LOG_WARNING,
3538 "DTS discontinuity in stream %d: packet %d with DTS "
3539 "%"PRId64", packet %d with DTS %"PRId64"\n",
3540 st->index, st->info->fps_last_dts_idx,
3541 st->info->fps_last_dts, st->codec_info_nb_frames,
3543 st->info->fps_first_dts =
3544 st->info->fps_last_dts = AV_NOPTS_VALUE;
3547 /* update stored dts values */
3548 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3549 st->info->fps_first_dts = pkt->dts;
3550 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3552 st->info->fps_last_dts = pkt->dts;
3553 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3555 if (st->codec_info_nb_frames>1) {
3559 if (st->time_base.den > 0)
3560 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3561 if (st->avg_frame_rate.num > 0)
3562 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3565 && st->codec_info_nb_frames>30
3566 && st->info->fps_first_dts != AV_NOPTS_VALUE
3567 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3568 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3570 if (analyzed_all_streams) limit = max_analyze_duration;
3571 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3572 else limit = max_stream_analyze_duration;
3575 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3577 t, pkt->stream_index);
3578 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3579 av_packet_unref(pkt);
3582 if (pkt->duration) {
3583 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3584 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3586 st->info->codec_info_duration += pkt->duration;
3587 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3590 #if FF_API_R_FRAME_RATE
3591 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
3592 ff_rfps_add_frame(ic, st, pkt->dts);
3594 if (st->parser && st->parser->parser->split && !avctx->extradata) {
3595 int i = st->parser->parser->split(avctx, pkt->data, pkt->size);
3596 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3597 avctx->extradata_size = i;
3598 avctx->extradata = av_mallocz(avctx->extradata_size +
3599 AV_INPUT_BUFFER_PADDING_SIZE);
3600 if (!avctx->extradata)
3601 return AVERROR(ENOMEM);
3602 memcpy(avctx->extradata, pkt->data,
3603 avctx->extradata_size);
3607 /* If still no information, we try to open the codec and to
3608 * decompress the frame. We try to avoid that in most cases as
3609 * it takes longer and uses more memory. For MPEG-4, we need to
3610 * decompress for QuickTime.
3612 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3613 * least one frame of codec data, this makes sure the codec initializes
3614 * the channel configuration and does not only trust the values from
3616 try_decode_frame(ic, st, pkt,
3617 (options && i < orig_nb_streams) ? &options[i] : NULL);
3619 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3620 av_packet_unref(pkt);
3622 st->codec_info_nb_frames++;
3628 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3629 st = ic->streams[stream_index];
3630 avctx = st->internal->avctx;
3631 if (!has_codec_parameters(st, NULL)) {
3632 const AVCodec *codec = find_decoder(ic, st, st->codecpar->codec_id);
3633 if (codec && !avctx->codec) {
3634 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : NULL) < 0)
3635 av_log(ic, AV_LOG_WARNING,
3636 "Failed to open codec in av_find_stream_info\n");
3640 // EOF already reached while reading the stream above.
3641 // So continue with reoordering DTS with whatever delay we have.
3642 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3643 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3649 AVPacket empty_pkt = { 0 };
3651 av_init_packet(&empty_pkt);
3653 for (i = 0; i < ic->nb_streams; i++) {
3655 st = ic->streams[i];
3657 /* flush the decoders */
3658 if (st->info->found_decoder == 1) {
3660 err = try_decode_frame(ic, st, &empty_pkt,
3661 (options && i < orig_nb_streams)
3662 ? &options[i] : NULL);
3663 } while (err > 0 && !has_codec_parameters(st, NULL));
3666 av_log(ic, AV_LOG_INFO,
3667 "decoding for stream %d failed\n", st->index);
3673 // close codecs which were opened in try_decode_frame()
3674 for (i = 0; i < ic->nb_streams; i++) {
3675 st = ic->streams[i];
3676 avcodec_close(st->internal->avctx);
3679 ff_rfps_calculate(ic);
3681 for (i = 0; i < ic->nb_streams; i++) {
3682 st = ic->streams[i];
3683 avctx = st->internal->avctx;
3684 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3685 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3686 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3687 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3688 avctx->codec_tag= tag;
3691 /* estimate average framerate if not set by demuxer */
3692 if (st->info->codec_info_duration_fields &&
3693 !st->avg_frame_rate.num &&
3694 st->info->codec_info_duration) {
3696 double best_error = 0.01;
3698 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3699 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3700 st->info->codec_info_duration < 0)
3702 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3703 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3704 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3706 /* Round guessed framerate to a "standard" framerate if it's
3707 * within 1% of the original estimate. */
3708 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3709 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3710 double error = fabs(av_q2d(st->avg_frame_rate) /
3711 av_q2d(std_fps) - 1);
3713 if (error < best_error) {
3715 best_fps = std_fps.num;
3719 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3720 best_fps, 12 * 1001, INT_MAX);
3723 if (!st->r_frame_rate.num) {
3724 if ( avctx->time_base.den * (int64_t) st->time_base.num
3725 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
3726 st->r_frame_rate.num = avctx->time_base.den;
3727 st->r_frame_rate.den = avctx->time_base.num * avctx->ticks_per_frame;
3729 st->r_frame_rate.num = st->time_base.den;
3730 st->r_frame_rate.den = st->time_base.num;
3733 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3734 AVRational hw_ratio = { avctx->height, avctx->width };
3735 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3738 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3739 if (!avctx->bits_per_coded_sample)
3740 avctx->bits_per_coded_sample =
3741 av_get_bits_per_sample(avctx->codec_id);
3742 // set stream disposition based on audio service type
3743 switch (avctx->audio_service_type) {
3744 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3745 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3747 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3748 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3750 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3751 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
3753 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3754 st->disposition = AV_DISPOSITION_COMMENT;
3756 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3757 st->disposition = AV_DISPOSITION_KARAOKE;
3764 estimate_timings(ic, old_offset);
3766 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
3768 if (ret >= 0 && ic->nb_streams)
3769 /* We could not have all the codec parameters before EOF. */
3771 for (i = 0; i < ic->nb_streams; i++) {
3773 st = ic->streams[i];
3775 /* if no packet was ever seen, update context now for has_codec_parameters */
3776 if (!st->internal->avctx_inited) {
3777 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3778 st->codecpar->format == AV_SAMPLE_FMT_NONE)
3779 st->codecpar->format = st->internal->avctx->sample_fmt;
3780 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
3782 goto find_stream_info_err;
3784 if (!has_codec_parameters(st, &errmsg)) {
3786 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
3787 av_log(ic, AV_LOG_WARNING,
3788 "Could not find codec parameters for stream %d (%s): %s\n"
3789 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3796 compute_chapters_end(ic);
3798 /* update the stream parameters from the internal codec contexts */
3799 for (i = 0; i < ic->nb_streams; i++) {
3800 st = ic->streams[i];
3802 if (st->internal->avctx_inited) {
3803 int orig_w = st->codecpar->width;
3804 int orig_h = st->codecpar->height;
3805 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
3807 goto find_stream_info_err;
3808 // The decoder might reduce the video size by the lowres factor.
3809 if (av_codec_get_lowres(st->internal->avctx) && orig_w) {
3810 st->codecpar->width = orig_w;
3811 st->codecpar->height = orig_h;
3815 #if FF_API_LAVF_AVCTX
3816 FF_DISABLE_DEPRECATION_WARNINGS
3817 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
3819 goto find_stream_info_err;
3821 // The old API (AVStream.codec) "requires" the resolution to be adjusted
3822 // by the lowres factor.
3823 if (av_codec_get_lowres(st->internal->avctx) && st->internal->avctx->width) {
3824 av_codec_set_lowres(st->codec, av_codec_get_lowres(st->internal->avctx));
3825 st->codec->width = st->internal->avctx->width;
3826 st->codec->height = st->internal->avctx->height;
3829 if (st->codec->codec_tag != MKTAG('t','m','c','d')) {
3830 st->codec->time_base = st->internal->avctx->time_base;
3831 st->codec->ticks_per_frame = st->internal->avctx->ticks_per_frame;
3833 st->codec->framerate = st->avg_frame_rate;
3835 if (st->internal->avctx->subtitle_header) {
3836 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
3837 if (!st->codec->subtitle_header)
3838 goto find_stream_info_err;
3839 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
3840 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
3841 st->codec->subtitle_header_size);
3844 // Fields unavailable in AVCodecParameters
3845 st->codec->coded_width = st->internal->avctx->coded_width;
3846 st->codec->coded_height = st->internal->avctx->coded_height;
3847 st->codec->properties = st->internal->avctx->properties;
3848 FF_ENABLE_DEPRECATION_WARNINGS
3851 st->internal->avctx_inited = 0;
3854 find_stream_info_err:
3855 for (i = 0; i < ic->nb_streams; i++) {
3856 st = ic->streams[i];
3858 av_freep(&st->info->duration_error);
3859 av_freep(&ic->streams[i]->info);
3862 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3863 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3867 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3871 for (i = 0; i < ic->nb_programs; i++) {
3872 if (ic->programs[i] == last) {
3876 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3877 if (ic->programs[i]->stream_index[j] == s)
3878 return ic->programs[i];
3884 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
3885 int wanted_stream_nb, int related_stream,
3886 AVCodec **decoder_ret, int flags)
3888 int i, nb_streams = ic->nb_streams;
3889 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3890 unsigned *program = NULL;
3891 const AVCodec *decoder = NULL, *best_decoder = NULL;
3893 if (related_stream >= 0 && wanted_stream_nb < 0) {
3894 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3896 program = p->stream_index;
3897 nb_streams = p->nb_stream_indexes;
3900 for (i = 0; i < nb_streams; i++) {
3901 int real_stream_index = program ? program[i] : i;
3902 AVStream *st = ic->streams[real_stream_index];
3903 AVCodecParameters *par = st->codecpar;
3904 if (par->codec_type != type)
3906 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3908 if (wanted_stream_nb != real_stream_index &&
3909 st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED |
3910 AV_DISPOSITION_VISUAL_IMPAIRED))
3912 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
3915 decoder = find_decoder(ic, st, par->codec_id);
3918 ret = AVERROR_DECODER_NOT_FOUND;
3922 count = st->codec_info_nb_frames;
3923 bitrate = par->bit_rate;
3924 multiframe = FFMIN(5, count);
3925 if ((best_multiframe > multiframe) ||
3926 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3927 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3930 best_bitrate = bitrate;
3931 best_multiframe = multiframe;
3932 ret = real_stream_index;
3933 best_decoder = decoder;
3934 if (program && i == nb_streams - 1 && ret < 0) {
3936 nb_streams = ic->nb_streams;
3937 /* no related stream found, try again with everything */
3942 *decoder_ret = (AVCodec*)best_decoder;
3946 /*******************************************************/
3948 int av_read_play(AVFormatContext *s)
3950 if (s->iformat->read_play)
3951 return s->iformat->read_play(s);
3953 return avio_pause(s->pb, 0);
3954 return AVERROR(ENOSYS);
3957 int av_read_pause(AVFormatContext *s)
3959 if (s->iformat->read_pause)
3960 return s->iformat->read_pause(s);
3962 return avio_pause(s->pb, 1);
3963 return AVERROR(ENOSYS);
3966 int ff_stream_encode_params_copy(AVStream *dst, const AVStream *src)
3971 dst->time_base = src->time_base;
3972 dst->nb_frames = src->nb_frames;
3973 dst->disposition = src->disposition;
3974 dst->sample_aspect_ratio = src->sample_aspect_ratio;
3975 dst->avg_frame_rate = src->avg_frame_rate;
3976 dst->r_frame_rate = src->r_frame_rate;
3978 av_dict_free(&dst->metadata);
3979 ret = av_dict_copy(&dst->metadata, src->metadata, 0);
3983 ret = avcodec_parameters_copy(dst->codecpar, src->codecpar);
3987 /* Free existing side data*/
3988 for (i = 0; i < dst->nb_side_data; i++)
3989 av_free(dst->side_data[i].data);
3990 av_freep(&dst->side_data);
3991 dst->nb_side_data = 0;
3993 /* Copy side data if present */
3994 if (src->nb_side_data) {
3995 dst->side_data = av_mallocz_array(src->nb_side_data,
3996 sizeof(AVPacketSideData));
3997 if (!dst->side_data)
3998 return AVERROR(ENOMEM);
3999 dst->nb_side_data = src->nb_side_data;
4001 for (i = 0; i < src->nb_side_data; i++) {
4002 uint8_t *data = av_memdup(src->side_data[i].data,
4003 src->side_data[i].size);
4005 return AVERROR(ENOMEM);
4006 dst->side_data[i].type = src->side_data[i].type;
4007 dst->side_data[i].size = src->side_data[i].size;
4008 dst->side_data[i].data = data;
4012 av_freep(&dst->recommended_encoder_configuration);
4013 if (src->recommended_encoder_configuration) {
4014 const char *conf_str = src->recommended_encoder_configuration;
4015 dst->recommended_encoder_configuration = av_strdup(conf_str);
4016 if (!dst->recommended_encoder_configuration)
4017 return AVERROR(ENOMEM);
4023 static void free_stream(AVStream **pst)
4025 AVStream *st = *pst;
4031 for (i = 0; i < st->nb_side_data; i++)
4032 av_freep(&st->side_data[i].data);
4033 av_freep(&st->side_data);
4036 av_parser_close(st->parser);
4038 if (st->attached_pic.data)
4039 av_packet_unref(&st->attached_pic);
4042 avcodec_free_context(&st->internal->avctx);
4043 for (i = 0; i < st->internal->nb_bsfcs; i++) {
4044 av_bsf_free(&st->internal->bsfcs[i]);
4045 av_freep(&st->internal->bsfcs);
4048 av_freep(&st->internal);
4050 av_dict_free(&st->metadata);
4051 avcodec_parameters_free(&st->codecpar);
4052 av_freep(&st->probe_data.buf);
4053 av_freep(&st->index_entries);
4054 #if FF_API_LAVF_AVCTX
4055 FF_DISABLE_DEPRECATION_WARNINGS
4056 av_freep(&st->codec->extradata);
4057 av_freep(&st->codec->subtitle_header);
4058 av_freep(&st->codec);
4059 FF_ENABLE_DEPRECATION_WARNINGS
4061 av_freep(&st->priv_data);
4063 av_freep(&st->info->duration_error);
4064 av_freep(&st->info);
4065 av_freep(&st->recommended_encoder_configuration);
4066 av_freep(&st->priv_pts);
4071 void ff_free_stream(AVFormatContext *s, AVStream *st)
4073 av_assert0(s->nb_streams>0);
4074 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
4076 free_stream(&s->streams[ --s->nb_streams ]);
4079 void avformat_free_context(AVFormatContext *s)
4087 if (s->iformat && s->iformat->priv_class && s->priv_data)
4088 av_opt_free(s->priv_data);
4089 if (s->oformat && s->oformat->priv_class && s->priv_data)
4090 av_opt_free(s->priv_data);
4092 for (i = s->nb_streams - 1; i >= 0; i--)
4093 ff_free_stream(s, s->streams[i]);
4096 for (i = s->nb_programs - 1; i >= 0; i--) {
4097 av_dict_free(&s->programs[i]->metadata);
4098 av_freep(&s->programs[i]->stream_index);
4099 av_freep(&s->programs[i]);
4101 av_freep(&s->programs);
4102 av_freep(&s->priv_data);
4103 while (s->nb_chapters--) {
4104 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4105 av_freep(&s->chapters[s->nb_chapters]);
4107 av_freep(&s->chapters);
4108 av_dict_free(&s->metadata);
4109 av_freep(&s->streams);
4110 av_freep(&s->internal);
4111 flush_packet_queue(s);
4115 void avformat_close_input(AVFormatContext **ps)
4126 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4127 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4130 flush_packet_queue(s);
4133 if (s->iformat->read_close)
4134 s->iformat->read_close(s);
4136 avformat_free_context(s);
4143 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4149 if (s->nb_streams >= INT_MAX/sizeof(*streams))
4151 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4154 s->streams = streams;
4156 st = av_mallocz(sizeof(AVStream));
4159 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4163 st->info->last_dts = AV_NOPTS_VALUE;
4165 #if FF_API_LAVF_AVCTX
4166 FF_DISABLE_DEPRECATION_WARNINGS
4167 st->codec = avcodec_alloc_context3(c);
4173 FF_ENABLE_DEPRECATION_WARNINGS
4176 st->internal = av_mallocz(sizeof(*st->internal));
4180 st->codecpar = avcodec_parameters_alloc();
4184 st->internal->avctx = avcodec_alloc_context3(NULL);
4185 if (!st->internal->avctx)
4189 #if FF_API_LAVF_AVCTX
4190 FF_DISABLE_DEPRECATION_WARNINGS
4191 /* no default bitrate if decoding */
4192 st->codec->bit_rate = 0;
4193 FF_ENABLE_DEPRECATION_WARNINGS
4196 /* default pts setting is MPEG-like */
4197 avpriv_set_pts_info(st, 33, 1, 90000);
4198 /* we set the current DTS to 0 so that formats without any timestamps
4199 * but durations get some timestamps, formats with some unknown
4200 * timestamps have their first few packets buffered and the
4201 * timestamps corrected before they are returned to the user */
4202 st->cur_dts = RELATIVE_TS_BASE;
4204 st->cur_dts = AV_NOPTS_VALUE;
4207 st->index = s->nb_streams;
4208 st->start_time = AV_NOPTS_VALUE;
4209 st->duration = AV_NOPTS_VALUE;
4210 st->first_dts = AV_NOPTS_VALUE;
4211 st->probe_packets = MAX_PROBE_PACKETS;
4212 st->pts_wrap_reference = AV_NOPTS_VALUE;
4213 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4215 st->last_IP_pts = AV_NOPTS_VALUE;
4216 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4217 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4218 st->pts_buffer[i] = AV_NOPTS_VALUE;
4220 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4222 #if FF_API_R_FRAME_RATE
4223 st->info->last_dts = AV_NOPTS_VALUE;
4225 st->info->fps_first_dts = AV_NOPTS_VALUE;
4226 st->info->fps_last_dts = AV_NOPTS_VALUE;
4228 st->inject_global_side_data = s->internal->inject_global_side_data;
4230 st->internal->need_context_update = 1;
4232 s->streams[s->nb_streams++] = st;
4239 AVProgram *av_new_program(AVFormatContext *ac, int id)
4241 AVProgram *program = NULL;
4244 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4246 for (i = 0; i < ac->nb_programs; i++)
4247 if (ac->programs[i]->id == id)
4248 program = ac->programs[i];
4251 program = av_mallocz(sizeof(AVProgram));
4254 dynarray_add(&ac->programs, &ac->nb_programs, program);
4255 program->discard = AVDISCARD_NONE;
4258 program->pts_wrap_reference = AV_NOPTS_VALUE;
4259 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4261 program->start_time =
4262 program->end_time = AV_NOPTS_VALUE;
4267 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4268 int64_t start, int64_t end, const char *title)
4270 AVChapter *chapter = NULL;
4273 if (end != AV_NOPTS_VALUE && start > end) {
4274 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4278 for (i = 0; i < s->nb_chapters; i++)
4279 if (s->chapters[i]->id == id)
4280 chapter = s->chapters[i];
4283 chapter = av_mallocz(sizeof(AVChapter));
4286 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4288 av_dict_set(&chapter->metadata, "title", title, 0);
4290 chapter->time_base = time_base;
4291 chapter->start = start;
4297 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4300 AVProgram *program = NULL;
4303 if (idx >= ac->nb_streams) {
4304 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4308 for (i = 0; i < ac->nb_programs; i++) {
4309 if (ac->programs[i]->id != progid)
4311 program = ac->programs[i];
4312 for (j = 0; j < program->nb_stream_indexes; j++)
4313 if (program->stream_index[j] == idx)
4316 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4319 program->stream_index = tmp;
4320 program->stream_index[program->nb_stream_indexes++] = idx;
4325 uint64_t ff_ntp_time(void)
4327 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4330 int av_get_frame_filename2(char *buf, int buf_size, const char *path, int number, int flags)
4333 char *q, buf1[20], c;
4334 int nd, len, percentd_found;
4346 while (av_isdigit(*p))
4347 nd = nd * 10 + *p++ - '0';
4349 } while (av_isdigit(c));
4355 if (!(flags & AV_FRAME_FILENAME_FLAGS_MULTIPLE) && percentd_found)
4360 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4362 if ((q - buf + len) > buf_size - 1)
4364 memcpy(q, buf1, len);
4372 if ((q - buf) < buf_size - 1)
4376 if (!percentd_found)
4385 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4387 return av_get_frame_filename2(buf, buf_size, path, number, 0);
4390 void av_url_split(char *proto, int proto_size,
4391 char *authorization, int authorization_size,
4392 char *hostname, int hostname_size,
4393 int *port_ptr, char *path, int path_size, const char *url)
4395 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4401 if (authorization_size > 0)
4402 authorization[0] = 0;
4403 if (hostname_size > 0)
4408 /* parse protocol */
4409 if ((p = strchr(url, ':'))) {
4410 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4417 /* no protocol means plain filename */
4418 av_strlcpy(path, url, path_size);
4422 /* separate path from hostname */
4423 ls = strchr(p, '/');
4424 ls2 = strchr(p, '?');
4428 ls = FFMIN(ls, ls2);
4430 av_strlcpy(path, ls, path_size);
4432 ls = &p[strlen(p)]; // XXX
4434 /* the rest is hostname, use that to parse auth/port */
4436 /* authorization (user[:pass]@hostname) */
4438 while ((at = strchr(p, '@')) && at < ls) {
4439 av_strlcpy(authorization, at2,
4440 FFMIN(authorization_size, at + 1 - at2));
4441 p = at + 1; /* skip '@' */
4444 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4446 av_strlcpy(hostname, p + 1,
4447 FFMIN(hostname_size, brk - p));
4448 if (brk[1] == ':' && port_ptr)
4449 *port_ptr = atoi(brk + 2);
4450 } else if ((col = strchr(p, ':')) && col < ls) {
4451 av_strlcpy(hostname, p,
4452 FFMIN(col + 1 - p, hostname_size));
4454 *port_ptr = atoi(col + 1);
4456 av_strlcpy(hostname, p,
4457 FFMIN(ls + 1 - p, hostname_size));
4461 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4464 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4467 'C', 'D', 'E', 'F' };
4468 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4471 'c', 'd', 'e', 'f' };
4472 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4474 for (i = 0; i < s; i++) {
4475 buff[i * 2] = hex_table[src[i] >> 4];
4476 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4482 int ff_hex_to_data(uint8_t *data, const char *p)
4489 p += strspn(p, SPACE_CHARS);
4492 c = av_toupper((unsigned char) *p++);
4493 if (c >= '0' && c <= '9')
4495 else if (c >= 'A' && c <= 'F')
4510 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4511 unsigned int pts_num, unsigned int pts_den)
4514 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4515 if (new_tb.num != pts_num)
4516 av_log(NULL, AV_LOG_DEBUG,
4517 "st:%d removing common factor %d from timebase\n",
4518 s->index, pts_num / new_tb.num);
4520 av_log(NULL, AV_LOG_WARNING,
4521 "st:%d has too large timebase, reducing\n", s->index);
4523 if (new_tb.num <= 0 || new_tb.den <= 0) {
4524 av_log(NULL, AV_LOG_ERROR,
4525 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4526 new_tb.num, new_tb.den,
4530 s->time_base = new_tb;
4531 #if FF_API_LAVF_AVCTX
4532 FF_DISABLE_DEPRECATION_WARNINGS
4533 av_codec_set_pkt_timebase(s->codec, new_tb);
4534 FF_ENABLE_DEPRECATION_WARNINGS
4536 av_codec_set_pkt_timebase(s->internal->avctx, new_tb);
4537 s->pts_wrap_bits = pts_wrap_bits;
4540 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4543 const char *ptr = str;
4545 /* Parse key=value pairs. */
4548 char *dest = NULL, *dest_end;
4549 int key_len, dest_len = 0;
4551 /* Skip whitespace and potential commas. */
4552 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4559 if (!(ptr = strchr(key, '=')))
4562 key_len = ptr - key;
4564 callback_get_buf(context, key, key_len, &dest, &dest_len);
4565 dest_end = dest + dest_len - 1;
4569 while (*ptr && *ptr != '\"') {
4573 if (dest && dest < dest_end)
4577 if (dest && dest < dest_end)
4585 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4586 if (dest && dest < dest_end)
4594 int ff_find_stream_index(AVFormatContext *s, int id)
4597 for (i = 0; i < s->nb_streams; i++)
4598 if (s->streams[i]->id == id)
4603 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4607 unsigned int codec_tag;
4608 if (ofmt->query_codec)
4609 return ofmt->query_codec(codec_id, std_compliance);
4610 else if (ofmt->codec_tag)
4611 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4612 else if (codec_id == ofmt->video_codec ||
4613 codec_id == ofmt->audio_codec ||
4614 codec_id == ofmt->subtitle_codec ||
4615 codec_id == ofmt->data_codec)
4618 return AVERROR_PATCHWELCOME;
4621 int avformat_network_init(void)
4625 ff_network_inited_globally = 1;
4626 if ((ret = ff_network_init()) < 0)
4628 if ((ret = ff_tls_init()) < 0)
4634 int avformat_network_deinit(void)
4639 ff_network_inited_globally = 0;
4644 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4645 uint64_t channel_layout, int32_t sample_rate,
4646 int32_t width, int32_t height)
4652 return AVERROR(EINVAL);
4655 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4657 if (channel_layout) {
4659 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4663 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4665 if (width || height) {
4667 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4669 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4671 return AVERROR(ENOMEM);
4672 bytestream_put_le32(&data, flags);
4674 bytestream_put_le32(&data, channels);
4676 bytestream_put_le64(&data, channel_layout);
4678 bytestream_put_le32(&data, sample_rate);
4679 if (width || height) {
4680 bytestream_put_le32(&data, width);
4681 bytestream_put_le32(&data, height);
4686 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4688 AVRational undef = {0, 1};
4689 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4690 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4691 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4693 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4694 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4695 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4696 stream_sample_aspect_ratio = undef;
4698 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4699 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4700 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4701 frame_sample_aspect_ratio = undef;
4703 if (stream_sample_aspect_ratio.num)
4704 return stream_sample_aspect_ratio;
4706 return frame_sample_aspect_ratio;
4709 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4711 AVRational fr = st->r_frame_rate;
4712 AVRational codec_fr = st->internal->avctx->framerate;
4713 AVRational avg_fr = st->avg_frame_rate;
4715 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4716 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4721 if (st->internal->avctx->ticks_per_frame > 1) {
4722 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4723 (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))
4730 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4733 if (*spec <= '9' && *spec >= '0') /* opt:index */
4734 return strtol(spec, NULL, 0) == st->index;
4735 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4736 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
4737 enum AVMediaType type;
4741 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4742 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4743 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4744 case 'd': type = AVMEDIA_TYPE_DATA; break;
4745 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4746 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
4747 default: av_assert0(0);
4749 #if FF_API_LAVF_AVCTX
4750 FF_DISABLE_DEPRECATION_WARNINGS
4751 if (type != st->codecpar->codec_type
4752 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
4754 FF_ENABLE_DEPRECATION_WARNINGS
4756 if (type != st->codecpar->codec_type)
4759 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
4761 if (*spec++ == ':') { /* possibly followed by :index */
4762 int i, index = strtol(spec, NULL, 0);
4763 for (i = 0; i < s->nb_streams; i++) {
4764 #if FF_API_LAVF_AVCTX
4765 FF_DISABLE_DEPRECATION_WARNINGS
4766 if ((s->streams[i]->codecpar->codec_type == type
4767 || s->streams[i]->codec->codec_type == type
4769 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4771 return i == st->index;
4772 FF_ENABLE_DEPRECATION_WARNINGS
4774 if ((s->streams[i]->codecpar->codec_type == type) &&
4775 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4777 return i == st->index;
4783 } else if (*spec == 'p' && *(spec + 1) == ':') {
4787 prog_id = strtol(spec, &endptr, 0);
4788 for (i = 0; i < s->nb_programs; i++) {
4789 if (s->programs[i]->id != prog_id)
4792 if (*endptr++ == ':') {
4793 int stream_idx = strtol(endptr, NULL, 0);
4794 return stream_idx >= 0 &&
4795 stream_idx < s->programs[i]->nb_stream_indexes &&
4796 st->index == s->programs[i]->stream_index[stream_idx];
4799 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4800 if (st->index == s->programs[i]->stream_index[j])
4804 } else if (*spec == '#' ||
4805 (*spec == 'i' && *(spec + 1) == ':')) {
4808 spec += 1 + (*spec == 'i');
4809 stream_id = strtol(spec, &endptr, 0);
4811 return stream_id == st->id;
4812 } else if (*spec == 'm' && *(spec + 1) == ':') {
4813 AVDictionaryEntry *tag;
4818 val = strchr(spec, ':');
4820 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
4822 return AVERROR(ENOMEM);
4824 tag = av_dict_get(st->metadata, key, NULL, 0);
4826 if (!val || !strcmp(tag->value, val + 1))
4835 } else if (*spec == 'u') {
4836 AVCodecParameters *par = st->codecpar;
4837 #if FF_API_LAVF_AVCTX
4838 FF_DISABLE_DEPRECATION_WARNINGS
4839 AVCodecContext *codec = st->codec;
4840 FF_ENABLE_DEPRECATION_WARNINGS
4843 switch (par->codec_type) {
4844 case AVMEDIA_TYPE_AUDIO:
4845 val = par->sample_rate && par->channels;
4846 #if FF_API_LAVF_AVCTX
4847 val = val || (codec->sample_rate && codec->channels);
4849 if (par->format == AV_SAMPLE_FMT_NONE
4850 #if FF_API_LAVF_AVCTX
4851 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
4856 case AVMEDIA_TYPE_VIDEO:
4857 val = par->width && par->height;
4858 #if FF_API_LAVF_AVCTX
4859 val = val || (codec->width && codec->height);
4861 if (par->format == AV_PIX_FMT_NONE
4862 #if FF_API_LAVF_AVCTX
4863 && codec->pix_fmt == AV_PIX_FMT_NONE
4868 case AVMEDIA_TYPE_UNKNOWN:
4875 #if FF_API_LAVF_AVCTX
4876 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
4878 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
4880 } else if (!*spec) /* empty specifier, matches everything */
4883 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4884 return AVERROR(EINVAL);
4887 int ff_generate_avci_extradata(AVStream *st)
4889 static const uint8_t avci100_1080p_extradata[] = {
4891 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4892 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4893 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4894 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4895 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4896 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4897 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4898 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4899 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4901 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4904 static const uint8_t avci100_1080i_extradata[] = {
4906 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4907 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4908 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4909 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4910 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4911 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4912 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4913 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4914 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4915 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4916 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
4918 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4921 static const uint8_t avci50_1080p_extradata[] = {
4923 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4924 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4925 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4926 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4927 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4928 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4929 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4930 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4931 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4933 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4936 static const uint8_t avci50_1080i_extradata[] = {
4938 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4939 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4940 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4941 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4942 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4943 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4944 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4945 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4946 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4947 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4948 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4950 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4953 static const uint8_t avci100_720p_extradata[] = {
4955 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4956 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4957 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4958 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4959 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4960 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4961 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4962 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4963 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4964 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4966 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4969 static const uint8_t avci50_720p_extradata[] = {
4971 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4972 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4973 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4974 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4975 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4976 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4977 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4978 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4979 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4981 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4985 const uint8_t *data = NULL;
4988 if (st->codecpar->width == 1920) {
4989 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
4990 data = avci100_1080p_extradata;
4991 size = sizeof(avci100_1080p_extradata);
4993 data = avci100_1080i_extradata;
4994 size = sizeof(avci100_1080i_extradata);
4996 } else if (st->codecpar->width == 1440) {
4997 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
4998 data = avci50_1080p_extradata;
4999 size = sizeof(avci50_1080p_extradata);
5001 data = avci50_1080i_extradata;
5002 size = sizeof(avci50_1080i_extradata);
5004 } else if (st->codecpar->width == 1280) {
5005 data = avci100_720p_extradata;
5006 size = sizeof(avci100_720p_extradata);
5007 } else if (st->codecpar->width == 960) {
5008 data = avci50_720p_extradata;
5009 size = sizeof(avci50_720p_extradata);
5015 av_freep(&st->codecpar->extradata);
5016 if (ff_alloc_extradata(st->codecpar, size))
5017 return AVERROR(ENOMEM);
5018 memcpy(st->codecpar->extradata, data, size);
5023 #if FF_API_NOCONST_GET_SIDE_DATA
5024 uint8_t *av_stream_get_side_data(AVStream *st,
5025 enum AVPacketSideDataType type, int *size)
5027 uint8_t *av_stream_get_side_data(const AVStream *st,
5028 enum AVPacketSideDataType type, int *size)
5033 for (i = 0; i < st->nb_side_data; i++) {
5034 if (st->side_data[i].type == type) {
5036 *size = st->side_data[i].size;
5037 return st->side_data[i].data;
5043 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
5046 AVPacketSideData *sd, *tmp;
5048 uint8_t *data = av_malloc(size);
5053 for (i = 0; i < st->nb_side_data; i++) {
5054 sd = &st->side_data[i];
5056 if (sd->type == type) {
5057 av_freep(&sd->data);
5064 tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
5070 st->side_data = tmp;
5073 sd = &st->side_data[st->nb_side_data - 1];
5080 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
5083 const AVBitStreamFilter *bsf;
5085 AVCodecParameters *in_par;
5087 if (!(bsf = av_bsf_get_by_name(name))) {
5088 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
5089 return AVERROR_BSF_NOT_FOUND;
5092 if ((ret = av_bsf_alloc(bsf, &bsfc)) < 0)
5095 if (st->internal->nb_bsfcs) {
5096 in_par = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->par_out;
5097 bsfc->time_base_in = st->internal->bsfcs[st->internal->nb_bsfcs - 1]->time_base_out;
5099 in_par = st->codecpar;
5100 bsfc->time_base_in = st->time_base;
5103 if ((ret = avcodec_parameters_copy(bsfc->par_in, in_par)) < 0) {
5108 if (args && bsfc->filter->priv_class) {
5109 const AVOption *opt = av_opt_next(bsfc->priv_data, NULL);
5110 const char * shorthand[2] = {NULL};
5113 shorthand[0] = opt->name;
5115 if ((ret = av_opt_set_from_string(bsfc->priv_data, args, shorthand, "=", ":")) < 0) {
5121 if ((ret = av_bsf_init(bsfc)) < 0) {
5126 if ((ret = av_dynarray_add_nofree(&st->internal->bsfcs, &st->internal->nb_bsfcs, bsfc))) {
5131 av_log(NULL, AV_LOG_VERBOSE,
5132 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5133 name, args ? args : "");
5138 FF_DISABLE_DEPRECATION_WARNINGS
5139 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5140 AVBitStreamFilterContext *bsfc)
5144 AVPacket new_pkt = *pkt;
5145 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5146 &new_pkt.data, &new_pkt.size,
5147 pkt->data, pkt->size,
5148 pkt->flags & AV_PKT_FLAG_KEY);
5149 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5150 av_packet_unref(pkt);
5151 memset(pkt, 0, sizeof(*pkt));
5154 if(a == 0 && new_pkt.data != pkt->data) {
5155 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
5157 memcpy(t, new_pkt.data, new_pkt.size);
5158 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5163 a = AVERROR(ENOMEM);
5167 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5168 av_buffer_default_free, NULL, 0);
5170 pkt->side_data = NULL;
5171 pkt->side_data_elems = 0;
5172 av_packet_unref(pkt);
5174 av_freep(&new_pkt.data);
5175 a = AVERROR(ENOMEM);
5179 av_log(codec, AV_LOG_ERROR,
5180 "Failed to open bitstream filter %s for stream %d with codec %s",
5181 bsfc->filter->name, pkt->stream_index,
5182 codec->codec ? codec->codec->name : "copy");
5192 FF_ENABLE_DEPRECATION_WARNINGS
5195 int ff_format_output_open(AVFormatContext *s, const char *url, AVDictionary **options)
5198 return AVERROR(EINVAL);
5200 if (!(s->oformat->flags & AVFMT_NOFILE))
5201 return s->io_open(s, &s->pb, url, AVIO_FLAG_WRITE, options);
5205 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5208 s->io_close(s, *pb);
5212 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5214 AVDictionaryEntry *entry;
5215 int64_t parsed_timestamp;
5217 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5218 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5219 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5222 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5229 int ff_standardize_creation_time(AVFormatContext *s)
5232 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5234 return avpriv_dict_set_timestamp(&s->metadata, "creation_time", timestamp);
5238 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5243 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5245 if (size != AVPALETTE_SIZE) {
5246 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5247 return AVERROR_INVALIDDATA;
5249 memcpy(palette, side_data, AVPALETTE_SIZE);
5253 if (ret == CONTAINS_PAL) {
5255 for (i = 0; i < AVPALETTE_COUNT; i++)
5256 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5263 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5268 ret = av_bprint_finalize(buf, &str);
5271 if (!av_bprint_is_complete(buf)) {
5273 return AVERROR(ENOMEM);
5276 par->extradata = str;
5277 /* Note: the string is NUL terminated (so extradata can be read as a
5278 * string), but the ending character is not accounted in the size (in
5279 * binary formats you are likely not supposed to mux that character). When
5280 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5282 par->extradata_size = buf->len;
5286 int avformat_transfer_internal_stream_timing_info(const AVOutputFormat *ofmt,
5287 AVStream *ost, const AVStream *ist,
5288 enum AVTimebaseSource copy_tb)
5290 //TODO: use [io]st->internal->avctx
5291 const AVCodecContext *dec_ctx = ist->codec;
5292 AVCodecContext *enc_ctx = ost->codec;
5294 enc_ctx->time_base = ist->time_base;
5296 * Avi is a special case here because it supports variable fps but
5297 * having the fps and timebase differe significantly adds quite some
5300 if (!strcmp(ofmt->name, "avi")) {
5301 #if FF_API_R_FRAME_RATE
5302 if (copy_tb == AVFMT_TBCF_AUTO && ist->r_frame_rate.num
5303 && av_q2d(ist->r_frame_rate) >= av_q2d(ist->avg_frame_rate)
5304 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(ist->time_base)
5305 && 0.5/av_q2d(ist->r_frame_rate) > av_q2d(dec_ctx->time_base)
5306 && av_q2d(ist->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
5307 || copy_tb == AVFMT_TBCF_R_FRAMERATE) {
5308 enc_ctx->time_base.num = ist->r_frame_rate.den;
5309 enc_ctx->time_base.den = 2*ist->r_frame_rate.num;
5310 enc_ctx->ticks_per_frame = 2;
5313 if (copy_tb == AVFMT_TBCF_AUTO && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->time_base)
5314 && av_q2d(ist->time_base) < 1.0/500
5315 || copy_tb == AVFMT_TBCF_DECODER) {
5316 enc_ctx->time_base = dec_ctx->time_base;
5317 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5318 enc_ctx->time_base.den *= 2;
5319 enc_ctx->ticks_per_frame = 2;
5321 } else if (!(ofmt->flags & AVFMT_VARIABLE_FPS)
5322 && !av_match_name(ofmt->name, "mov,mp4,3gp,3g2,psp,ipod,ismv,f4v")) {
5323 if (copy_tb == AVFMT_TBCF_AUTO && dec_ctx->time_base.den
5324 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->time_base)
5325 && av_q2d(ist->time_base) < 1.0/500
5326 || copy_tb == AVFMT_TBCF_DECODER) {
5327 enc_ctx->time_base = dec_ctx->time_base;
5328 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
5332 if (enc_ctx->codec_tag == AV_RL32("tmcd")
5333 && dec_ctx->time_base.num < dec_ctx->time_base.den
5334 && dec_ctx->time_base.num > 0
5335 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
5336 enc_ctx->time_base = dec_ctx->time_base;
5339 if (ost->avg_frame_rate.num)
5340 enc_ctx->time_base = av_inv_q(ost->avg_frame_rate);
5342 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
5343 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);