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(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, 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, 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);
310 if (fmt && st->request_probe <= 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 st->codecpar->codec_id = fmt_id_type[i].id;
322 st->codecpar->codec_type = fmt_id_type[i].type;
323 st->internal->need_context_update = 1;
324 #if FF_API_LAVF_AVCTX
325 FF_DISABLE_DEPRECATION_WARNINGS
326 st->codec->codec_type = st->codecpar->codec_type;
327 st->codec->codec_id = st->codecpar->codec_id;
328 FF_ENABLE_DEPRECATION_WARNINGS
337 /************************************************************/
338 /* input media file */
340 int av_demuxer_open(AVFormatContext *ic) {
343 if (ic->format_whitelist && av_match_list(ic->iformat->name, ic->format_whitelist, ',') <= 0) {
344 av_log(ic, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", ic->format_whitelist);
345 return AVERROR(EINVAL);
348 if (ic->iformat->read_header) {
349 err = ic->iformat->read_header(ic);
354 if (ic->pb && !ic->internal->data_offset)
355 ic->internal->data_offset = avio_tell(ic->pb);
360 /* Open input file and probe the format if necessary. */
361 static int init_input(AVFormatContext *s, const char *filename,
362 AVDictionary **options)
365 AVProbeData pd = { filename, NULL, 0 };
366 int score = AVPROBE_SCORE_RETRY;
369 s->flags |= AVFMT_FLAG_CUSTOM_IO;
371 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
372 s, 0, s->format_probesize);
373 else if (s->iformat->flags & AVFMT_NOFILE)
374 av_log(s, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
375 "will be ignored with AVFMT_NOFILE format.\n");
379 if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) ||
380 (!s->iformat && (s->iformat = av_probe_input_format2(&pd, 0, &score))))
383 if ((ret = s->io_open(s, &s->pb, filename, AVIO_FLAG_READ | s->avio_flags, options)) < 0)
388 return av_probe_input_buffer2(s->pb, &s->iformat, filename,
389 s, 0, s->format_probesize);
392 static int add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
393 AVPacketList **plast_pktl, int ref)
395 AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
399 return AVERROR(ENOMEM);
402 if ((ret = av_packet_ref(&pktl->pkt, pkt)) < 0) {
411 (*plast_pktl)->next = pktl;
413 *packet_buffer = pktl;
415 /* Add the packet in the buffered packet list. */
420 int avformat_queue_attached_pictures(AVFormatContext *s)
423 for (i = 0; i < s->nb_streams; i++)
424 if (s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC &&
425 s->streams[i]->discard < AVDISCARD_ALL) {
426 if (s->streams[i]->attached_pic.size <= 0) {
427 av_log(s, AV_LOG_WARNING,
428 "Attached picture on stream %d has invalid size, "
433 ret = add_to_pktbuf(&s->internal->raw_packet_buffer,
434 &s->streams[i]->attached_pic,
435 &s->internal->raw_packet_buffer_end, 1);
442 static int update_stream_avctx(AVFormatContext *s)
445 for (i = 0; i < s->nb_streams; i++) {
446 AVStream *st = s->streams[i];
448 if (!st->internal->need_context_update)
451 /* update internal codec context, for the parser */
452 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
456 #if FF_API_LAVF_AVCTX
457 FF_DISABLE_DEPRECATION_WARNINGS
458 /* update deprecated public codec context */
459 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
462 FF_ENABLE_DEPRECATION_WARNINGS
465 st->internal->need_context_update = 0;
471 int avformat_open_input(AVFormatContext **ps, const char *filename,
472 AVInputFormat *fmt, AVDictionary **options)
474 AVFormatContext *s = *ps;
476 AVDictionary *tmp = NULL;
477 ID3v2ExtraMeta *id3v2_extra_meta = NULL;
479 if (!s && !(s = avformat_alloc_context()))
480 return AVERROR(ENOMEM);
482 av_log(NULL, AV_LOG_ERROR, "Input context has not been properly allocated by avformat_alloc_context() and is not NULL either\n");
483 return AVERROR(EINVAL);
489 av_dict_copy(&tmp, *options, 0);
491 if (s->pb) // must be before any goto fail
492 s->flags |= AVFMT_FLAG_CUSTOM_IO;
494 if ((ret = av_opt_set_dict(s, &tmp)) < 0)
497 if ((ret = init_input(s, filename, &tmp)) < 0)
499 s->probe_score = ret;
501 if (!s->protocol_whitelist && s->pb && s->pb->protocol_whitelist) {
502 s->protocol_whitelist = av_strdup(s->pb->protocol_whitelist);
503 if (!s->protocol_whitelist) {
504 ret = AVERROR(ENOMEM);
509 if (!s->protocol_blacklist && s->pb && s->pb->protocol_blacklist) {
510 s->protocol_blacklist = av_strdup(s->pb->protocol_blacklist);
511 if (!s->protocol_blacklist) {
512 ret = AVERROR(ENOMEM);
517 if (s->format_whitelist && av_match_list(s->iformat->name, s->format_whitelist, ',') <= 0) {
518 av_log(s, AV_LOG_ERROR, "Format not on whitelist \'%s\'\n", s->format_whitelist);
519 ret = AVERROR(EINVAL);
523 avio_skip(s->pb, s->skip_initial_bytes);
525 /* Check filename in case an image number is expected. */
526 if (s->iformat->flags & AVFMT_NEEDNUMBER) {
527 if (!av_filename_number_test(filename)) {
528 ret = AVERROR(EINVAL);
533 s->duration = s->start_time = AV_NOPTS_VALUE;
534 av_strlcpy(s->filename, filename ? filename : "", sizeof(s->filename));
536 /* Allocate private data. */
537 if (s->iformat->priv_data_size > 0) {
538 if (!(s->priv_data = av_mallocz(s->iformat->priv_data_size))) {
539 ret = AVERROR(ENOMEM);
542 if (s->iformat->priv_class) {
543 *(const AVClass **) s->priv_data = s->iformat->priv_class;
544 av_opt_set_defaults(s->priv_data);
545 if ((ret = av_opt_set_dict(s->priv_data, &tmp)) < 0)
550 /* e.g. AVFMT_NOFILE formats will not have a AVIOContext */
552 ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, 0);
554 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->iformat->read_header)
555 if ((ret = s->iformat->read_header(s)) < 0)
558 if (id3v2_extra_meta) {
559 if (!strcmp(s->iformat->name, "mp3") || !strcmp(s->iformat->name, "aac") ||
560 !strcmp(s->iformat->name, "tta")) {
561 if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0)
564 av_log(s, AV_LOG_DEBUG, "demuxer does not support additional id3 data, skipping\n");
566 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
568 if ((ret = avformat_queue_attached_pictures(s)) < 0)
571 if (!(s->flags&AVFMT_FLAG_PRIV_OPT) && s->pb && !s->internal->data_offset)
572 s->internal->data_offset = avio_tell(s->pb);
574 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
576 update_stream_avctx(s);
578 for (i = 0; i < s->nb_streams; i++)
579 s->streams[i]->internal->orig_codec_id = s->streams[i]->codecpar->codec_id;
582 av_dict_free(options);
589 ff_id3v2_free_extra_meta(&id3v2_extra_meta);
591 if (s->pb && !(s->flags & AVFMT_FLAG_CUSTOM_IO))
593 avformat_free_context(s);
598 /*******************************************************/
600 static void force_codec_ids(AVFormatContext *s, AVStream *st)
602 switch (st->codecpar->codec_type) {
603 case AVMEDIA_TYPE_VIDEO:
604 if (s->video_codec_id)
605 st->codecpar->codec_id = s->video_codec_id;
607 case AVMEDIA_TYPE_AUDIO:
608 if (s->audio_codec_id)
609 st->codecpar->codec_id = s->audio_codec_id;
611 case AVMEDIA_TYPE_SUBTITLE:
612 if (s->subtitle_codec_id)
613 st->codecpar->codec_id = s->subtitle_codec_id;
618 static int probe_codec(AVFormatContext *s, AVStream *st, const AVPacket *pkt)
620 if (st->request_probe>0) {
621 AVProbeData *pd = &st->probe_data;
623 av_log(s, AV_LOG_DEBUG, "probing stream %d pp:%d\n", st->index, st->probe_packets);
627 uint8_t *new_buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
629 av_log(s, AV_LOG_WARNING,
630 "Failed to reallocate probe buffer for stream %d\n",
635 memcpy(pd->buf + pd->buf_size, pkt->data, pkt->size);
636 pd->buf_size += pkt->size;
637 memset(pd->buf + pd->buf_size, 0, AVPROBE_PADDING_SIZE);
640 st->probe_packets = 0;
642 av_log(s, AV_LOG_WARNING,
643 "nothing to probe for stream %d\n", st->index);
647 end= s->internal->raw_packet_buffer_remaining_size <= 0
648 || st->probe_packets<= 0;
650 if (end || av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)) {
651 int score = set_codec_from_probe_data(s, st, pd);
652 if ( (st->codecpar->codec_id != AV_CODEC_ID_NONE && score > AVPROBE_SCORE_STREAM_RETRY)
656 st->request_probe = -1;
657 if (st->codecpar->codec_id != AV_CODEC_ID_NONE) {
658 av_log(s, AV_LOG_DEBUG, "probed stream %d\n", st->index);
660 av_log(s, AV_LOG_WARNING, "probed stream %d failed\n", st->index);
662 force_codec_ids(s, st);
668 static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index, AVPacket *pkt)
670 int64_t ref = pkt->dts;
671 int i, pts_wrap_behavior;
672 int64_t pts_wrap_reference;
673 AVProgram *first_program;
675 if (ref == AV_NOPTS_VALUE)
677 if (st->pts_wrap_reference != AV_NOPTS_VALUE || st->pts_wrap_bits >= 63 || ref == AV_NOPTS_VALUE || !s->correct_ts_overflow)
679 ref &= (1LL << st->pts_wrap_bits)-1;
681 // reference time stamp should be 60 s before first time stamp
682 pts_wrap_reference = ref - av_rescale(60, st->time_base.den, st->time_base.num);
683 // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
684 pts_wrap_behavior = (ref < (1LL << st->pts_wrap_bits) - (1LL << st->pts_wrap_bits-3)) ||
685 (ref < (1LL << st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
686 AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
688 first_program = av_find_program_from_stream(s, NULL, stream_index);
690 if (!first_program) {
691 int default_stream_index = av_find_default_stream_index(s);
692 if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
693 for (i = 0; i < s->nb_streams; i++) {
694 if (av_find_program_from_stream(s, NULL, i))
696 s->streams[i]->pts_wrap_reference = pts_wrap_reference;
697 s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
701 st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
702 st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
706 AVProgram *program = first_program;
708 if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
709 pts_wrap_reference = program->pts_wrap_reference;
710 pts_wrap_behavior = program->pts_wrap_behavior;
713 program = av_find_program_from_stream(s, program, stream_index);
716 // update every program with differing pts_wrap_reference
717 program = first_program;
719 if (program->pts_wrap_reference != pts_wrap_reference) {
720 for (i = 0; i<program->nb_stream_indexes; i++) {
721 s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
722 s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
725 program->pts_wrap_reference = pts_wrap_reference;
726 program->pts_wrap_behavior = pts_wrap_behavior;
728 program = av_find_program_from_stream(s, program, stream_index);
734 int ff_read_packet(AVFormatContext *s, AVPacket *pkt)
740 AVPacketList *pktl = s->internal->raw_packet_buffer;
744 st = s->streams[pkt->stream_index];
745 if (s->internal->raw_packet_buffer_remaining_size <= 0)
746 if ((err = probe_codec(s, st, NULL)) < 0)
748 if (st->request_probe <= 0) {
749 s->internal->raw_packet_buffer = pktl->next;
750 s->internal->raw_packet_buffer_remaining_size += pkt->size;
759 ret = s->iformat->read_packet(s, pkt);
761 /* Some demuxers return FFERROR_REDO when they consume
762 data and discard it (ignored streams, junk, extradata).
763 We must re-call the demuxer to get the real packet. */
764 if (ret == FFERROR_REDO)
766 if (!pktl || ret == AVERROR(EAGAIN))
768 for (i = 0; i < s->nb_streams; i++) {
770 if (st->probe_packets)
771 if ((err = probe_codec(s, st, NULL)) < 0)
773 av_assert0(st->request_probe <= 0);
779 AVPacket tmp = { 0 };
780 ret = av_packet_ref(&tmp, pkt);
786 if ((s->flags & AVFMT_FLAG_DISCARD_CORRUPT) &&
787 (pkt->flags & AV_PKT_FLAG_CORRUPT)) {
788 av_log(s, AV_LOG_WARNING,
789 "Dropped corrupted packet (stream = %d)\n",
791 av_packet_unref(pkt);
795 if (pkt->stream_index >= (unsigned)s->nb_streams) {
796 av_log(s, AV_LOG_ERROR, "Invalid stream index %d\n", pkt->stream_index);
800 st = s->streams[pkt->stream_index];
802 if (update_wrap_reference(s, st, pkt->stream_index, pkt) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
803 // correct first time stamps to negative values
804 if (!is_relative(st->first_dts))
805 st->first_dts = wrap_timestamp(st, st->first_dts);
806 if (!is_relative(st->start_time))
807 st->start_time = wrap_timestamp(st, st->start_time);
808 if (!is_relative(st->cur_dts))
809 st->cur_dts = wrap_timestamp(st, st->cur_dts);
812 pkt->dts = wrap_timestamp(st, pkt->dts);
813 pkt->pts = wrap_timestamp(st, pkt->pts);
815 force_codec_ids(s, st);
817 /* TODO: audio: time filter; video: frame reordering (pts != dts) */
818 if (s->use_wallclock_as_timestamps)
819 pkt->dts = pkt->pts = av_rescale_q(av_gettime(), AV_TIME_BASE_Q, st->time_base);
821 if (!pktl && st->request_probe <= 0)
824 err = add_to_pktbuf(&s->internal->raw_packet_buffer, pkt,
825 &s->internal->raw_packet_buffer_end, 0);
828 s->internal->raw_packet_buffer_remaining_size -= pkt->size;
830 if ((err = probe_codec(s, st, pkt)) < 0)
836 /**********************************************************/
838 static int determinable_frame_size(AVCodecContext *avctx)
840 if (/*avctx->codec_id == AV_CODEC_ID_AAC ||*/
841 avctx->codec_id == AV_CODEC_ID_MP1 ||
842 avctx->codec_id == AV_CODEC_ID_MP2 ||
843 avctx->codec_id == AV_CODEC_ID_MP3/* ||
844 avctx->codec_id == AV_CODEC_ID_CELT*/)
850 * Return the frame duration in seconds. Return 0 if not available.
852 void ff_compute_frame_duration(AVFormatContext *s, int *pnum, int *pden, AVStream *st,
853 AVCodecParserContext *pc, AVPacket *pkt)
855 AVRational codec_framerate = s->iformat ? st->internal->avctx->framerate :
856 av_mul_q(av_inv_q(st->internal->avctx->time_base), (AVRational){1, st->internal->avctx->ticks_per_frame});
857 int frame_size, sample_rate;
859 #if FF_API_LAVF_AVCTX
860 FF_DISABLE_DEPRECATION_WARNINGS
861 if ((!codec_framerate.den || !codec_framerate.num) && st->codec->time_base.den && st->codec->time_base.num)
862 codec_framerate = av_mul_q(av_inv_q(st->codec->time_base), (AVRational){1, st->codec->ticks_per_frame});
863 FF_ENABLE_DEPRECATION_WARNINGS
868 switch (st->codecpar->codec_type) {
869 case AVMEDIA_TYPE_VIDEO:
870 if (st->r_frame_rate.num && !pc && s->iformat) {
871 *pnum = st->r_frame_rate.den;
872 *pden = st->r_frame_rate.num;
873 } else if (st->time_base.num * 1000LL > st->time_base.den) {
874 *pnum = st->time_base.num;
875 *pden = st->time_base.den;
876 } else if (codec_framerate.den * 1000LL > codec_framerate.num) {
877 av_assert0(st->internal->avctx->ticks_per_frame);
878 av_reduce(pnum, pden,
880 codec_framerate.num * (int64_t)st->internal->avctx->ticks_per_frame,
883 if (pc && pc->repeat_pict) {
884 av_assert0(s->iformat); // this may be wrong for interlaced encoding but its not used for that case
885 av_reduce(pnum, pden,
886 (*pnum) * (1LL + pc->repeat_pict),
890 /* If this codec can be interlaced or progressive then we need
891 * a parser to compute duration of a packet. Thus if we have
892 * no parser in such case leave duration undefined. */
893 if (st->internal->avctx->ticks_per_frame > 1 && !pc)
897 case AVMEDIA_TYPE_AUDIO:
898 if (st->internal->avctx_inited) {
899 frame_size = av_get_audio_frame_duration(st->internal->avctx, pkt->size);
900 sample_rate = st->internal->avctx->sample_rate;
902 frame_size = av_get_audio_frame_duration2(st->codecpar, pkt->size);
903 sample_rate = st->codecpar->sample_rate;
905 if (frame_size <= 0 || sample_rate <= 0)
915 static int is_intra_only(enum AVCodecID id)
917 const AVCodecDescriptor *d = avcodec_descriptor_get(id);
920 if (d->type == AVMEDIA_TYPE_VIDEO && !(d->props & AV_CODEC_PROP_INTRA_ONLY))
925 static int has_decode_delay_been_guessed(AVStream *st)
927 if (st->codecpar->codec_id != AV_CODEC_ID_H264) return 1;
928 if (!st->info) // if we have left find_stream_info then nb_decoded_frames won't increase anymore for stream copy
930 #if CONFIG_H264_DECODER
931 if (st->internal->avctx->has_b_frames &&
932 avpriv_h264_has_num_reorder_frames(st->internal->avctx) == st->internal->avctx->has_b_frames)
935 if (st->internal->avctx->has_b_frames<3)
936 return st->nb_decoded_frames >= 7;
937 else if (st->internal->avctx->has_b_frames<4)
938 return st->nb_decoded_frames >= 18;
940 return st->nb_decoded_frames >= 20;
943 static AVPacketList *get_next_pkt(AVFormatContext *s, AVStream *st, AVPacketList *pktl)
947 if (pktl == s->internal->packet_buffer_end)
948 return s->internal->parse_queue;
952 static int64_t select_from_pts_buffer(AVStream *st, int64_t *pts_buffer, int64_t dts) {
953 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
954 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
957 int delay = st->internal->avctx->has_b_frames;
960 if (dts == AV_NOPTS_VALUE) {
961 int64_t best_score = INT64_MAX;
962 for (i = 0; i<delay; i++) {
963 if (st->pts_reorder_error_count[i]) {
964 int64_t score = st->pts_reorder_error[i] / st->pts_reorder_error_count[i];
965 if (score < best_score) {
972 for (i = 0; i<delay; i++) {
973 if (pts_buffer[i] != AV_NOPTS_VALUE) {
974 int64_t diff = FFABS(pts_buffer[i] - dts)
975 + (uint64_t)st->pts_reorder_error[i];
976 diff = FFMAX(diff, st->pts_reorder_error[i]);
977 st->pts_reorder_error[i] = diff;
978 st->pts_reorder_error_count[i]++;
979 if (st->pts_reorder_error_count[i] > 250) {
980 st->pts_reorder_error[i] >>= 1;
981 st->pts_reorder_error_count[i] >>= 1;
988 if (dts == AV_NOPTS_VALUE)
995 * Updates the dts of packets of a stream in pkt_buffer, by re-ordering the pts
996 * of the packets in a window.
998 static void update_dts_from_pts(AVFormatContext *s, int stream_index,
999 AVPacketList *pkt_buffer)
1001 AVStream *st = s->streams[stream_index];
1002 int delay = st->internal->avctx->has_b_frames;
1005 int64_t pts_buffer[MAX_REORDER_DELAY+1];
1007 for (i = 0; i<MAX_REORDER_DELAY+1; i++)
1008 pts_buffer[i] = AV_NOPTS_VALUE;
1010 for (; pkt_buffer; pkt_buffer = get_next_pkt(s, st, pkt_buffer)) {
1011 if (pkt_buffer->pkt.stream_index != stream_index)
1014 if (pkt_buffer->pkt.pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1015 pts_buffer[0] = pkt_buffer->pkt.pts;
1016 for (i = 0; i<delay && pts_buffer[i] > pts_buffer[i + 1]; i++)
1017 FFSWAP(int64_t, pts_buffer[i], pts_buffer[i + 1]);
1019 pkt_buffer->pkt.dts = select_from_pts_buffer(st, pts_buffer, pkt_buffer->pkt.dts);
1024 static void update_initial_timestamps(AVFormatContext *s, int stream_index,
1025 int64_t dts, int64_t pts, AVPacket *pkt)
1027 AVStream *st = s->streams[stream_index];
1028 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1029 AVPacketList *pktl_it;
1033 if (st->first_dts != AV_NOPTS_VALUE ||
1034 dts == AV_NOPTS_VALUE ||
1035 st->cur_dts == AV_NOPTS_VALUE ||
1039 st->first_dts = dts - (st->cur_dts - RELATIVE_TS_BASE);
1041 shift = (uint64_t)st->first_dts - RELATIVE_TS_BASE;
1043 if (is_relative(pts))
1046 for (pktl_it = pktl; pktl_it; pktl_it = get_next_pkt(s, st, pktl_it)) {
1047 if (pktl_it->pkt.stream_index != stream_index)
1049 if (is_relative(pktl_it->pkt.pts))
1050 pktl_it->pkt.pts += shift;
1052 if (is_relative(pktl_it->pkt.dts))
1053 pktl_it->pkt.dts += shift;
1055 if (st->start_time == AV_NOPTS_VALUE && pktl_it->pkt.pts != AV_NOPTS_VALUE) {
1056 st->start_time = pktl_it->pkt.pts;
1057 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1058 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1062 if (has_decode_delay_been_guessed(st)) {
1063 update_dts_from_pts(s, stream_index, pktl);
1066 if (st->start_time == AV_NOPTS_VALUE) {
1067 st->start_time = pts;
1068 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate)
1069 st->start_time += av_rescale_q(st->skip_samples, (AVRational){1, st->codecpar->sample_rate}, st->time_base);
1073 static void update_initial_durations(AVFormatContext *s, AVStream *st,
1074 int stream_index, int duration)
1076 AVPacketList *pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1077 int64_t cur_dts = RELATIVE_TS_BASE;
1079 if (st->first_dts != AV_NOPTS_VALUE) {
1080 if (st->update_initial_durations_done)
1082 st->update_initial_durations_done = 1;
1083 cur_dts = st->first_dts;
1084 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1085 if (pktl->pkt.stream_index == stream_index) {
1086 if (pktl->pkt.pts != pktl->pkt.dts ||
1087 pktl->pkt.dts != AV_NOPTS_VALUE ||
1090 cur_dts -= duration;
1093 if (pktl && pktl->pkt.dts != st->first_dts) {
1094 av_log(s, AV_LOG_DEBUG, "first_dts %s not matching first dts %s (pts %s, duration %"PRId64") in the queue\n",
1095 av_ts2str(st->first_dts), av_ts2str(pktl->pkt.dts), av_ts2str(pktl->pkt.pts), pktl->pkt.duration);
1099 av_log(s, AV_LOG_DEBUG, "first_dts %s but no packet with dts in the queue\n", av_ts2str(st->first_dts));
1102 pktl = s->internal->packet_buffer ? s->internal->packet_buffer : s->internal->parse_queue;
1103 st->first_dts = cur_dts;
1104 } else if (st->cur_dts != RELATIVE_TS_BASE)
1107 for (; pktl; pktl = get_next_pkt(s, st, pktl)) {
1108 if (pktl->pkt.stream_index != stream_index)
1110 if (pktl->pkt.pts == pktl->pkt.dts &&
1111 (pktl->pkt.dts == AV_NOPTS_VALUE || pktl->pkt.dts == st->first_dts) &&
1112 !pktl->pkt.duration) {
1113 pktl->pkt.dts = cur_dts;
1114 if (!st->internal->avctx->has_b_frames)
1115 pktl->pkt.pts = cur_dts;
1116 // if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
1117 pktl->pkt.duration = duration;
1120 cur_dts = pktl->pkt.dts + pktl->pkt.duration;
1123 st->cur_dts = cur_dts;
1126 static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
1127 AVCodecParserContext *pc, AVPacket *pkt,
1128 int64_t next_dts, int64_t next_pts)
1130 int num, den, presentation_delayed, delay, i;
1132 AVRational duration;
1133 int onein_oneout = st->codecpar->codec_id != AV_CODEC_ID_H264 &&
1134 st->codecpar->codec_id != AV_CODEC_ID_HEVC;
1136 if (s->flags & AVFMT_FLAG_NOFILLIN)
1139 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && pkt->dts != AV_NOPTS_VALUE) {
1140 if (pkt->dts == pkt->pts && st->last_dts_for_order_check != AV_NOPTS_VALUE) {
1141 if (st->last_dts_for_order_check <= pkt->dts) {
1144 av_log(s, st->dts_misordered ? AV_LOG_DEBUG : AV_LOG_WARNING,
1145 "DTS %"PRIi64" < %"PRIi64" out of order\n",
1147 st->last_dts_for_order_check);
1148 st->dts_misordered++;
1150 if (st->dts_ordered + st->dts_misordered > 250) {
1151 st->dts_ordered >>= 1;
1152 st->dts_misordered >>= 1;
1156 st->last_dts_for_order_check = pkt->dts;
1157 if (st->dts_ordered < 8*st->dts_misordered && pkt->dts == pkt->pts)
1158 pkt->dts = AV_NOPTS_VALUE;
1161 if ((s->flags & AVFMT_FLAG_IGNDTS) && pkt->pts != AV_NOPTS_VALUE)
1162 pkt->dts = AV_NOPTS_VALUE;
1164 if (pc && pc->pict_type == AV_PICTURE_TYPE_B
1165 && !st->internal->avctx->has_b_frames)
1166 //FIXME Set low_delay = 0 when has_b_frames = 1
1167 st->internal->avctx->has_b_frames = 1;
1169 /* do we have a video B-frame ? */
1170 delay = st->internal->avctx->has_b_frames;
1171 presentation_delayed = 0;
1173 /* XXX: need has_b_frame, but cannot get it if the codec is
1174 * not initialized */
1176 pc && pc->pict_type != AV_PICTURE_TYPE_B)
1177 presentation_delayed = 1;
1179 if (pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE &&
1180 st->pts_wrap_bits < 63 &&
1181 pkt->dts - (1LL << (st->pts_wrap_bits - 1)) > pkt->pts) {
1182 if (is_relative(st->cur_dts) || pkt->dts - (1LL<<(st->pts_wrap_bits - 1)) > st->cur_dts) {
1183 pkt->dts -= 1LL << st->pts_wrap_bits;
1185 pkt->pts += 1LL << st->pts_wrap_bits;
1188 /* Some MPEG-2 in MPEG-PS lack dts (issue #171 / input_file.mpg).
1189 * We take the conservative approach and discard both.
1190 * Note: If this is misbehaving for an H.264 file, then possibly
1191 * presentation_delayed is not set correctly. */
1192 if (delay == 1 && pkt->dts == pkt->pts &&
1193 pkt->dts != AV_NOPTS_VALUE && presentation_delayed) {
1194 av_log(s, AV_LOG_DEBUG, "invalid dts/pts combination %"PRIi64"\n", pkt->dts);
1195 if ( strcmp(s->iformat->name, "mov,mp4,m4a,3gp,3g2,mj2")
1196 && strcmp(s->iformat->name, "flv")) // otherwise we discard correct timestamps for vc1-wmapro.ism
1197 pkt->dts = AV_NOPTS_VALUE;
1200 duration = av_mul_q((AVRational) {pkt->duration, 1}, st->time_base);
1201 if (pkt->duration == 0) {
1202 ff_compute_frame_duration(s, &num, &den, st, pc, pkt);
1204 duration = (AVRational) {num, den};
1205 pkt->duration = av_rescale_rnd(1,
1206 num * (int64_t) st->time_base.den,
1207 den * (int64_t) st->time_base.num,
1212 if (pkt->duration != 0 && (s->internal->packet_buffer || s->internal->parse_queue))
1213 update_initial_durations(s, st, pkt->stream_index, pkt->duration);
1215 /* Correct timestamps with byte offset if demuxers only have timestamps
1216 * on packet boundaries */
1217 if (pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size) {
1218 /* this will estimate bitrate based on this frame's duration and size */
1219 offset = av_rescale(pc->offset, pkt->duration, pkt->size);
1220 if (pkt->pts != AV_NOPTS_VALUE)
1222 if (pkt->dts != AV_NOPTS_VALUE)
1226 /* This may be redundant, but it should not hurt. */
1227 if (pkt->dts != AV_NOPTS_VALUE &&
1228 pkt->pts != AV_NOPTS_VALUE &&
1229 pkt->pts > pkt->dts)
1230 presentation_delayed = 1;
1232 if (s->debug & FF_FDEBUG_TS)
1233 av_log(s, AV_LOG_TRACE,
1234 "IN delayed:%d pts:%s, dts:%s cur_dts:%s st:%d pc:%p duration:%"PRId64" delay:%d onein_oneout:%d\n",
1235 presentation_delayed, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts),
1236 pkt->stream_index, pc, pkt->duration, delay, onein_oneout);
1238 /* Interpolate PTS and DTS if they are not present. We skip H264
1239 * currently because delay and has_b_frames are not reliably set. */
1240 if ((delay == 0 || (delay == 1 && pc)) &&
1242 if (presentation_delayed) {
1243 /* DTS = decompression timestamp */
1244 /* PTS = presentation timestamp */
1245 if (pkt->dts == AV_NOPTS_VALUE)
1246 pkt->dts = st->last_IP_pts;
1247 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1248 if (pkt->dts == AV_NOPTS_VALUE)
1249 pkt->dts = st->cur_dts;
1251 /* This is tricky: the dts must be incremented by the duration
1252 * of the frame we are displaying, i.e. the last I- or P-frame. */
1253 if (st->last_IP_duration == 0)
1254 st->last_IP_duration = pkt->duration;
1255 if (pkt->dts != AV_NOPTS_VALUE)
1256 st->cur_dts = pkt->dts + st->last_IP_duration;
1257 if (pkt->dts != AV_NOPTS_VALUE &&
1258 pkt->pts == AV_NOPTS_VALUE &&
1259 st->last_IP_duration > 0 &&
1260 ((uint64_t)st->cur_dts - (uint64_t)next_dts + 1) <= 2 &&
1261 next_dts != next_pts &&
1262 next_pts != AV_NOPTS_VALUE)
1263 pkt->pts = next_dts;
1265 st->last_IP_duration = pkt->duration;
1266 st->last_IP_pts = pkt->pts;
1267 /* Cannot compute PTS if not present (we can compute it only
1268 * by knowing the future. */
1269 } else if (pkt->pts != AV_NOPTS_VALUE ||
1270 pkt->dts != AV_NOPTS_VALUE ||
1273 /* presentation is not delayed : PTS and DTS are the same */
1274 if (pkt->pts == AV_NOPTS_VALUE)
1275 pkt->pts = pkt->dts;
1276 update_initial_timestamps(s, pkt->stream_index, pkt->pts,
1278 if (pkt->pts == AV_NOPTS_VALUE)
1279 pkt->pts = st->cur_dts;
1280 pkt->dts = pkt->pts;
1281 if (pkt->pts != AV_NOPTS_VALUE)
1282 st->cur_dts = av_add_stable(st->time_base, pkt->pts, duration, 1);
1286 if (pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
1287 st->pts_buffer[0] = pkt->pts;
1288 for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
1289 FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
1291 if(has_decode_delay_been_guessed(st))
1292 pkt->dts = select_from_pts_buffer(st, st->pts_buffer, pkt->dts);
1294 // We skipped it above so we try here.
1296 // This should happen on the first packet
1297 update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
1298 if (pkt->dts > st->cur_dts)
1299 st->cur_dts = pkt->dts;
1301 if (s->debug & FF_FDEBUG_TS)
1302 av_log(s, AV_LOG_TRACE, "OUTdelayed:%d/%d pts:%s, dts:%s cur_dts:%s\n",
1303 presentation_delayed, delay, av_ts2str(pkt->pts), av_ts2str(pkt->dts), av_ts2str(st->cur_dts));
1306 if (is_intra_only(st->codecpar->codec_id))
1307 pkt->flags |= AV_PKT_FLAG_KEY;
1308 #if FF_API_CONVERGENCE_DURATION
1309 FF_DISABLE_DEPRECATION_WARNINGS
1311 pkt->convergence_duration = pc->convergence_duration;
1312 FF_ENABLE_DEPRECATION_WARNINGS
1316 static void free_packet_buffer(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
1319 AVPacketList *pktl = *pkt_buf;
1320 *pkt_buf = pktl->next;
1321 av_packet_unref(&pktl->pkt);
1324 *pkt_buf_end = NULL;
1328 * Parse a packet, add all split parts to parse_queue.
1330 * @param pkt Packet to parse, NULL when flushing the parser at end of stream.
1332 static int parse_packet(AVFormatContext *s, AVPacket *pkt, int stream_index)
1334 AVPacket out_pkt = { 0 }, flush_pkt = { 0 };
1335 AVStream *st = s->streams[stream_index];
1336 uint8_t *data = pkt ? pkt->data : NULL;
1337 int size = pkt ? pkt->size : 0;
1338 int ret = 0, got_output = 0;
1341 av_init_packet(&flush_pkt);
1344 } else if (!size && st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) {
1345 // preserve 0-size sync packets
1346 compute_pkt_fields(s, st, st->parser, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1349 while (size > 0 || (pkt == &flush_pkt && got_output)) {
1351 int64_t next_pts = pkt->pts;
1352 int64_t next_dts = pkt->dts;
1354 av_init_packet(&out_pkt);
1355 len = av_parser_parse2(st->parser, st->internal->avctx,
1356 &out_pkt.data, &out_pkt.size, data, size,
1357 pkt->pts, pkt->dts, pkt->pos);
1359 pkt->pts = pkt->dts = AV_NOPTS_VALUE;
1361 /* increment read pointer */
1365 got_output = !!out_pkt.size;
1370 if (pkt->side_data) {
1371 out_pkt.side_data = pkt->side_data;
1372 out_pkt.side_data_elems = pkt->side_data_elems;
1373 pkt->side_data = NULL;
1374 pkt->side_data_elems = 0;
1377 /* set the duration */
1378 out_pkt.duration = (st->parser->flags & PARSER_FLAG_COMPLETE_FRAMES) ? pkt->duration : 0;
1379 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1380 if (st->internal->avctx->sample_rate > 0) {
1382 av_rescale_q_rnd(st->parser->duration,
1383 (AVRational) { 1, st->internal->avctx->sample_rate },
1389 out_pkt.stream_index = st->index;
1390 out_pkt.pts = st->parser->pts;
1391 out_pkt.dts = st->parser->dts;
1392 out_pkt.pos = st->parser->pos;
1394 if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1395 out_pkt.pos = st->parser->frame_offset;
1397 if (st->parser->key_frame == 1 ||
1398 (st->parser->key_frame == -1 &&
1399 st->parser->pict_type == AV_PICTURE_TYPE_I))
1400 out_pkt.flags |= AV_PKT_FLAG_KEY;
1402 if (st->parser->key_frame == -1 && st->parser->pict_type ==AV_PICTURE_TYPE_NONE && (pkt->flags&AV_PKT_FLAG_KEY))
1403 out_pkt.flags |= AV_PKT_FLAG_KEY;
1405 compute_pkt_fields(s, st, st->parser, &out_pkt, next_dts, next_pts);
1407 ret = add_to_pktbuf(&s->internal->parse_queue, &out_pkt,
1408 &s->internal->parse_queue_end, 1);
1409 av_packet_unref(&out_pkt);
1414 /* end of the stream => close and free the parser */
1415 if (pkt == &flush_pkt) {
1416 av_parser_close(st->parser);
1421 av_packet_unref(pkt);
1425 static int read_from_packet_buffer(AVPacketList **pkt_buffer,
1426 AVPacketList **pkt_buffer_end,
1430 av_assert0(*pkt_buffer);
1433 *pkt_buffer = pktl->next;
1435 *pkt_buffer_end = NULL;
1440 static int64_t ts_to_samples(AVStream *st, int64_t ts)
1442 return av_rescale(ts, st->time_base.num * st->codecpar->sample_rate, st->time_base.den);
1445 static int read_frame_internal(AVFormatContext *s, AVPacket *pkt)
1447 int ret = 0, i, got_packet = 0;
1448 AVDictionary *metadata = NULL;
1450 av_init_packet(pkt);
1452 while (!got_packet && !s->internal->parse_queue) {
1456 /* read next packet */
1457 ret = ff_read_packet(s, &cur_pkt);
1459 if (ret == AVERROR(EAGAIN))
1461 /* flush the parsers */
1462 for (i = 0; i < s->nb_streams; i++) {
1464 if (st->parser && st->need_parsing)
1465 parse_packet(s, NULL, st->index);
1467 /* all remaining packets are now in parse_queue =>
1468 * really terminate parsing */
1472 st = s->streams[cur_pkt.stream_index];
1474 /* update context if required */
1475 if (st->internal->need_context_update) {
1476 if (avcodec_is_open(st->internal->avctx)) {
1477 av_log(s, AV_LOG_DEBUG, "Demuxer context update while decoder is open, closing and trying to re-open\n");
1478 avcodec_close(st->internal->avctx);
1479 st->info->found_decoder = 0;
1482 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
1486 st->internal->need_context_update = 0;
1489 if (cur_pkt.pts != AV_NOPTS_VALUE &&
1490 cur_pkt.dts != AV_NOPTS_VALUE &&
1491 cur_pkt.pts < cur_pkt.dts) {
1492 av_log(s, AV_LOG_WARNING,
1493 "Invalid timestamps stream=%d, pts=%s, dts=%s, size=%d\n",
1494 cur_pkt.stream_index,
1495 av_ts2str(cur_pkt.pts),
1496 av_ts2str(cur_pkt.dts),
1499 if (s->debug & FF_FDEBUG_TS)
1500 av_log(s, AV_LOG_DEBUG,
1501 "ff_read_packet stream=%d, pts=%s, dts=%s, size=%d, duration=%"PRId64", flags=%d\n",
1502 cur_pkt.stream_index,
1503 av_ts2str(cur_pkt.pts),
1504 av_ts2str(cur_pkt.dts),
1505 cur_pkt.size, cur_pkt.duration, cur_pkt.flags);
1507 if (st->need_parsing && !st->parser && !(s->flags & AVFMT_FLAG_NOPARSE)) {
1508 st->parser = av_parser_init(st->codecpar->codec_id);
1510 av_log(s, AV_LOG_VERBOSE, "parser not found for codec "
1511 "%s, packets or times may be invalid.\n",
1512 avcodec_get_name(st->codecpar->codec_id));
1513 /* no parser available: just output the raw packets */
1514 st->need_parsing = AVSTREAM_PARSE_NONE;
1515 } else if (st->need_parsing == AVSTREAM_PARSE_HEADERS)
1516 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
1517 else if (st->need_parsing == AVSTREAM_PARSE_FULL_ONCE)
1518 st->parser->flags |= PARSER_FLAG_ONCE;
1519 else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW)
1520 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
1523 if (!st->need_parsing || !st->parser) {
1524 /* no parsing needed: we just output the packet as is */
1526 compute_pkt_fields(s, st, NULL, pkt, AV_NOPTS_VALUE, AV_NOPTS_VALUE);
1527 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) &&
1528 (pkt->flags & AV_PKT_FLAG_KEY) && pkt->dts != AV_NOPTS_VALUE) {
1529 ff_reduce_index(s, st->index);
1530 av_add_index_entry(st, pkt->pos, pkt->dts,
1531 0, 0, AVINDEX_KEYFRAME);
1534 } else if (st->discard < AVDISCARD_ALL) {
1535 if ((ret = parse_packet(s, &cur_pkt, cur_pkt.stream_index)) < 0)
1537 st->codecpar->sample_rate = st->internal->avctx->sample_rate;
1538 st->codecpar->bit_rate = st->internal->avctx->bit_rate;
1539 st->codecpar->channels = st->internal->avctx->channels;
1540 st->codecpar->channel_layout = st->internal->avctx->channel_layout;
1541 st->codecpar->codec_id = st->internal->avctx->codec_id;
1544 av_packet_unref(&cur_pkt);
1546 if (pkt->flags & AV_PKT_FLAG_KEY)
1547 st->skip_to_keyframe = 0;
1548 if (st->skip_to_keyframe) {
1549 av_packet_unref(&cur_pkt);
1557 if (!got_packet && s->internal->parse_queue)
1558 ret = read_from_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end, pkt);
1561 AVStream *st = s->streams[pkt->stream_index];
1562 int discard_padding = 0;
1563 if (st->first_discard_sample && pkt->pts != AV_NOPTS_VALUE) {
1564 int64_t pts = pkt->pts - (is_relative(pkt->pts) ? RELATIVE_TS_BASE : 0);
1565 int64_t sample = ts_to_samples(st, pts);
1566 int duration = ts_to_samples(st, pkt->duration);
1567 int64_t end_sample = sample + duration;
1568 if (duration > 0 && end_sample >= st->first_discard_sample &&
1569 sample < st->last_discard_sample)
1570 discard_padding = FFMIN(end_sample - st->first_discard_sample, duration);
1572 if (st->start_skip_samples && (pkt->pts == 0 || pkt->pts == RELATIVE_TS_BASE))
1573 st->skip_samples = st->start_skip_samples;
1574 if (st->skip_samples || discard_padding) {
1575 uint8_t *p = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10);
1577 AV_WL32(p, st->skip_samples);
1578 AV_WL32(p + 4, discard_padding);
1579 av_log(s, AV_LOG_DEBUG, "demuxer injecting skip %d / discard %d\n", st->skip_samples, discard_padding);
1581 st->skip_samples = 0;
1584 if (st->inject_global_side_data) {
1585 for (i = 0; i < st->nb_side_data; i++) {
1586 AVPacketSideData *src_sd = &st->side_data[i];
1589 if (av_packet_get_side_data(pkt, src_sd->type, NULL))
1592 dst_data = av_packet_new_side_data(pkt, src_sd->type, src_sd->size);
1594 av_log(s, AV_LOG_WARNING, "Could not inject global side data\n");
1598 memcpy(dst_data, src_sd->data, src_sd->size);
1600 st->inject_global_side_data = 0;
1603 if (!(s->flags & AVFMT_FLAG_KEEP_SIDE_DATA))
1604 av_packet_merge_side_data(pkt);
1607 av_opt_get_dict_val(s, "metadata", AV_OPT_SEARCH_CHILDREN, &metadata);
1609 s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
1610 av_dict_copy(&s->metadata, metadata, 0);
1611 av_dict_free(&metadata);
1612 av_opt_set_dict_val(s, "metadata", NULL, AV_OPT_SEARCH_CHILDREN);
1615 #if FF_API_LAVF_AVCTX
1616 update_stream_avctx(s);
1619 if (s->debug & FF_FDEBUG_TS)
1620 av_log(s, AV_LOG_DEBUG,
1621 "read_frame_internal stream=%d, pts=%s, dts=%s, "
1622 "size=%d, duration=%"PRId64", flags=%d\n",
1624 av_ts2str(pkt->pts),
1625 av_ts2str(pkt->dts),
1626 pkt->size, pkt->duration, pkt->flags);
1631 int av_read_frame(AVFormatContext *s, AVPacket *pkt)
1633 const int genpts = s->flags & AVFMT_FLAG_GENPTS;
1639 ret = s->internal->packet_buffer
1640 ? read_from_packet_buffer(&s->internal->packet_buffer,
1641 &s->internal->packet_buffer_end, pkt)
1642 : read_frame_internal(s, pkt);
1649 AVPacketList *pktl = s->internal->packet_buffer;
1652 AVPacket *next_pkt = &pktl->pkt;
1654 if (next_pkt->dts != AV_NOPTS_VALUE) {
1655 int wrap_bits = s->streams[next_pkt->stream_index]->pts_wrap_bits;
1656 // last dts seen for this stream. if any of packets following
1657 // current one had no dts, we will set this to AV_NOPTS_VALUE.
1658 int64_t last_dts = next_pkt->dts;
1659 while (pktl && next_pkt->pts == AV_NOPTS_VALUE) {
1660 if (pktl->pkt.stream_index == next_pkt->stream_index &&
1661 (av_compare_mod(next_pkt->dts, pktl->pkt.dts, 2LL << (wrap_bits - 1)) < 0)) {
1662 if (av_compare_mod(pktl->pkt.pts, pktl->pkt.dts, 2LL << (wrap_bits - 1))) {
1664 next_pkt->pts = pktl->pkt.dts;
1666 if (last_dts != AV_NOPTS_VALUE) {
1667 // Once last dts was set to AV_NOPTS_VALUE, we don't change it.
1668 last_dts = pktl->pkt.dts;
1673 if (eof && next_pkt->pts == AV_NOPTS_VALUE && last_dts != AV_NOPTS_VALUE) {
1674 // Fixing the last reference frame had none pts issue (For MXF etc).
1675 // We only do this when
1677 // 2. we are not able to resolve a pts value for current packet.
1678 // 3. the packets for this stream at the end of the files had valid dts.
1679 next_pkt->pts = last_dts + next_pkt->duration;
1681 pktl = s->internal->packet_buffer;
1684 /* read packet from packet buffer, if there is data */
1685 st = s->streams[next_pkt->stream_index];
1686 if (!(next_pkt->pts == AV_NOPTS_VALUE && st->discard < AVDISCARD_ALL &&
1687 next_pkt->dts != AV_NOPTS_VALUE && !eof)) {
1688 ret = read_from_packet_buffer(&s->internal->packet_buffer,
1689 &s->internal->packet_buffer_end, pkt);
1694 ret = read_frame_internal(s, pkt);
1696 if (pktl && ret != AVERROR(EAGAIN)) {
1703 ret = add_to_pktbuf(&s->internal->packet_buffer, pkt,
1704 &s->internal->packet_buffer_end, 1);
1705 av_packet_unref(pkt);
1712 st = s->streams[pkt->stream_index];
1713 if ((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & AV_PKT_FLAG_KEY) {
1714 ff_reduce_index(s, st->index);
1715 av_add_index_entry(st, pkt->pos, pkt->dts, 0, 0, AVINDEX_KEYFRAME);
1718 if (is_relative(pkt->dts))
1719 pkt->dts -= RELATIVE_TS_BASE;
1720 if (is_relative(pkt->pts))
1721 pkt->pts -= RELATIVE_TS_BASE;
1726 /* XXX: suppress the packet queue */
1727 static void flush_packet_queue(AVFormatContext *s)
1731 free_packet_buffer(&s->internal->parse_queue, &s->internal->parse_queue_end);
1732 free_packet_buffer(&s->internal->packet_buffer, &s->internal->packet_buffer_end);
1733 free_packet_buffer(&s->internal->raw_packet_buffer, &s->internal->raw_packet_buffer_end);
1735 s->internal->raw_packet_buffer_remaining_size = RAW_PACKET_BUFFER_SIZE;
1738 /*******************************************************/
1741 int av_find_default_stream_index(AVFormatContext *s)
1745 int best_stream = 0;
1746 int best_score = INT_MIN;
1748 if (s->nb_streams <= 0)
1750 for (i = 0; i < s->nb_streams; i++) {
1753 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1754 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
1756 if (st->codecpar->width && st->codecpar->height)
1760 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1761 if (st->codecpar->sample_rate)
1764 if (st->codec_info_nb_frames)
1767 if (st->discard != AVDISCARD_ALL)
1770 if (score > best_score) {
1778 /** Flush the frame reader. */
1779 void ff_read_frame_flush(AVFormatContext *s)
1784 flush_packet_queue(s);
1786 /* Reset read state for each stream. */
1787 for (i = 0; i < s->nb_streams; i++) {
1791 av_parser_close(st->parser);
1794 st->last_IP_pts = AV_NOPTS_VALUE;
1795 st->last_dts_for_order_check = AV_NOPTS_VALUE;
1796 if (st->first_dts == AV_NOPTS_VALUE)
1797 st->cur_dts = RELATIVE_TS_BASE;
1799 /* We set the current DTS to an unspecified origin. */
1800 st->cur_dts = AV_NOPTS_VALUE;
1802 st->probe_packets = MAX_PROBE_PACKETS;
1804 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
1805 st->pts_buffer[j] = AV_NOPTS_VALUE;
1807 if (s->internal->inject_global_side_data)
1808 st->inject_global_side_data = 1;
1810 st->skip_samples = 0;
1814 void ff_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp)
1818 for (i = 0; i < s->nb_streams; i++) {
1819 AVStream *st = s->streams[i];
1822 av_rescale(timestamp,
1823 st->time_base.den * (int64_t) ref_st->time_base.num,
1824 st->time_base.num * (int64_t) ref_st->time_base.den);
1828 void ff_reduce_index(AVFormatContext *s, int stream_index)
1830 AVStream *st = s->streams[stream_index];
1831 unsigned int max_entries = s->max_index_size / sizeof(AVIndexEntry);
1833 if ((unsigned) st->nb_index_entries >= max_entries) {
1835 for (i = 0; 2 * i < st->nb_index_entries; i++)
1836 st->index_entries[i] = st->index_entries[2 * i];
1837 st->nb_index_entries = i;
1841 int ff_add_index_entry(AVIndexEntry **index_entries,
1842 int *nb_index_entries,
1843 unsigned int *index_entries_allocated_size,
1844 int64_t pos, int64_t timestamp,
1845 int size, int distance, int flags)
1847 AVIndexEntry *entries, *ie;
1850 if ((unsigned) *nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
1853 if (timestamp == AV_NOPTS_VALUE)
1854 return AVERROR(EINVAL);
1856 if (size < 0 || size > 0x3FFFFFFF)
1857 return AVERROR(EINVAL);
1859 if (is_relative(timestamp)) //FIXME this maintains previous behavior but we should shift by the correct offset once known
1860 timestamp -= RELATIVE_TS_BASE;
1862 entries = av_fast_realloc(*index_entries,
1863 index_entries_allocated_size,
1864 (*nb_index_entries + 1) *
1865 sizeof(AVIndexEntry));
1869 *index_entries = entries;
1871 index = ff_index_search_timestamp(*index_entries, *nb_index_entries,
1872 timestamp, AVSEEK_FLAG_ANY);
1875 index = (*nb_index_entries)++;
1876 ie = &entries[index];
1877 av_assert0(index == 0 || ie[-1].timestamp < timestamp);
1879 ie = &entries[index];
1880 if (ie->timestamp != timestamp) {
1881 if (ie->timestamp <= timestamp)
1883 memmove(entries + index + 1, entries + index,
1884 sizeof(AVIndexEntry) * (*nb_index_entries - index));
1885 (*nb_index_entries)++;
1886 } else if (ie->pos == pos && distance < ie->min_distance)
1887 // do not reduce the distance
1888 distance = ie->min_distance;
1892 ie->timestamp = timestamp;
1893 ie->min_distance = distance;
1900 int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp,
1901 int size, int distance, int flags)
1903 timestamp = wrap_timestamp(st, timestamp);
1904 return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
1905 &st->index_entries_allocated_size, pos,
1906 timestamp, size, distance, flags);
1909 int ff_index_search_timestamp(const AVIndexEntry *entries, int nb_entries,
1910 int64_t wanted_timestamp, int flags)
1918 // Optimize appending index entries at the end.
1919 if (b && entries[b - 1].timestamp < wanted_timestamp)
1924 timestamp = entries[m].timestamp;
1925 if (timestamp >= wanted_timestamp)
1927 if (timestamp <= wanted_timestamp)
1930 m = (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
1932 if (!(flags & AVSEEK_FLAG_ANY))
1933 while (m >= 0 && m < nb_entries &&
1934 !(entries[m].flags & AVINDEX_KEYFRAME))
1935 m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
1937 if (m == nb_entries)
1942 void ff_configure_buffers_for_index(AVFormatContext *s, int64_t time_tolerance)
1945 int64_t pos_delta = 0;
1947 //We could use URLProtocol flags here but as many user applications do not use URLProtocols this would be unreliable
1948 const char *proto = avio_find_protocol_name(s->filename);
1951 av_log(s, AV_LOG_INFO,
1952 "Protocol name not provided, cannot determine if input is local or "
1953 "a network protocol, buffers and access patterns cannot be configured "
1954 "optimally without knowing the protocol\n");
1957 if (proto && !(strcmp(proto, "file") && strcmp(proto, "pipe") && strcmp(proto, "cache")))
1960 for (ist1 = 0; ist1 < s->nb_streams; ist1++) {
1961 AVStream *st1 = s->streams[ist1];
1962 for (ist2 = 0; ist2 < s->nb_streams; ist2++) {
1963 AVStream *st2 = s->streams[ist2];
1969 for (i1 = i2 = 0; i1 < st1->nb_index_entries; i1++) {
1970 AVIndexEntry *e1 = &st1->index_entries[i1];
1971 int64_t e1_pts = av_rescale_q(e1->timestamp, st1->time_base, AV_TIME_BASE_Q);
1973 skip = FFMAX(skip, e1->size);
1974 for (; i2 < st2->nb_index_entries; i2++) {
1975 AVIndexEntry *e2 = &st2->index_entries[i2];
1976 int64_t e2_pts = av_rescale_q(e2->timestamp, st2->time_base, AV_TIME_BASE_Q);
1977 if (e2_pts - e1_pts < time_tolerance)
1979 pos_delta = FFMAX(pos_delta, e1->pos - e2->pos);
1987 /* XXX This could be adjusted depending on protocol*/
1988 if (s->pb->buffer_size < pos_delta && pos_delta < (1<<24)) {
1989 av_log(s, AV_LOG_VERBOSE, "Reconfiguring buffers to size %"PRId64"\n", pos_delta);
1990 ffio_set_buf_size(s->pb, pos_delta);
1991 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, pos_delta/2);
1994 if (skip < (1<<23)) {
1995 s->pb->short_seek_threshold = FFMAX(s->pb->short_seek_threshold, skip);
1999 int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp, int flags)
2001 return ff_index_search_timestamp(st->index_entries, st->nb_index_entries,
2002 wanted_timestamp, flags);
2005 static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
2006 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2008 int64_t ts = read_timestamp(s, stream_index, ppos, pos_limit);
2009 if (stream_index >= 0)
2010 ts = wrap_timestamp(s->streams[stream_index], ts);
2014 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
2015 int64_t target_ts, int flags)
2017 AVInputFormat *avif = s->iformat;
2018 int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
2019 int64_t ts_min, ts_max, ts;
2024 if (stream_index < 0)
2027 av_log(s, AV_LOG_TRACE, "read_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2030 ts_min = AV_NOPTS_VALUE;
2031 pos_limit = -1; // GCC falsely says it may be uninitialized.
2033 st = s->streams[stream_index];
2034 if (st->index_entries) {
2037 /* FIXME: Whole function must be checked for non-keyframe entries in
2038 * index case, especially read_timestamp(). */
2039 index = av_index_search_timestamp(st, target_ts,
2040 flags | AVSEEK_FLAG_BACKWARD);
2041 index = FFMAX(index, 0);
2042 e = &st->index_entries[index];
2044 if (e->timestamp <= target_ts || e->pos == e->min_distance) {
2046 ts_min = e->timestamp;
2047 av_log(s, AV_LOG_TRACE, "using cached pos_min=0x%"PRIx64" dts_min=%s\n",
2048 pos_min, av_ts2str(ts_min));
2050 av_assert1(index == 0);
2053 index = av_index_search_timestamp(st, target_ts,
2054 flags & ~AVSEEK_FLAG_BACKWARD);
2055 av_assert0(index < st->nb_index_entries);
2057 e = &st->index_entries[index];
2058 av_assert1(e->timestamp >= target_ts);
2060 ts_max = e->timestamp;
2061 pos_limit = pos_max - e->min_distance;
2062 av_log(s, AV_LOG_TRACE, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64
2063 " dts_max=%s\n", pos_max, pos_limit, av_ts2str(ts_max));
2067 pos = ff_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit,
2068 ts_min, ts_max, flags, &ts, avif->read_timestamp);
2073 if ((ret = avio_seek(s->pb, pos, SEEK_SET)) < 0)
2076 ff_read_frame_flush(s);
2077 ff_update_cur_dts(s, st, ts);
2082 int ff_find_last_ts(AVFormatContext *s, int stream_index, int64_t *ts, int64_t *pos,
2083 int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
2085 int64_t step = 1024;
2086 int64_t limit, ts_max;
2087 int64_t filesize = avio_size(s->pb);
2088 int64_t pos_max = filesize - 1;
2091 pos_max = FFMAX(0, (pos_max) - step);
2092 ts_max = ff_read_timestamp(s, stream_index,
2093 &pos_max, limit, read_timestamp);
2095 } while (ts_max == AV_NOPTS_VALUE && 2*limit > step);
2096 if (ts_max == AV_NOPTS_VALUE)
2100 int64_t tmp_pos = pos_max + 1;
2101 int64_t tmp_ts = ff_read_timestamp(s, stream_index,
2102 &tmp_pos, INT64_MAX, read_timestamp);
2103 if (tmp_ts == AV_NOPTS_VALUE)
2105 av_assert0(tmp_pos > pos_max);
2108 if (tmp_pos >= filesize)
2120 int64_t ff_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts,
2121 int64_t pos_min, int64_t pos_max, int64_t pos_limit,
2122 int64_t ts_min, int64_t ts_max,
2123 int flags, int64_t *ts_ret,
2124 int64_t (*read_timestamp)(struct AVFormatContext *, int,
2125 int64_t *, int64_t))
2132 av_log(s, AV_LOG_TRACE, "gen_seek: %d %s\n", stream_index, av_ts2str(target_ts));
2134 if (ts_min == AV_NOPTS_VALUE) {
2135 pos_min = s->internal->data_offset;
2136 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2137 if (ts_min == AV_NOPTS_VALUE)
2141 if (ts_min >= target_ts) {
2146 if (ts_max == AV_NOPTS_VALUE) {
2147 if ((ret = ff_find_last_ts(s, stream_index, &ts_max, &pos_max, read_timestamp)) < 0)
2149 pos_limit = pos_max;
2152 if (ts_max <= target_ts) {
2157 av_assert0(ts_min < ts_max);
2160 while (pos_min < pos_limit) {
2161 av_log(s, AV_LOG_TRACE,
2162 "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%s dts_max=%s\n",
2163 pos_min, pos_max, av_ts2str(ts_min), av_ts2str(ts_max));
2164 av_assert0(pos_limit <= pos_max);
2166 if (no_change == 0) {
2167 int64_t approximate_keyframe_distance = pos_max - pos_limit;
2168 // interpolate position (better than dichotomy)
2169 pos = av_rescale(target_ts - ts_min, pos_max - pos_min,
2171 pos_min - approximate_keyframe_distance;
2172 } else if (no_change == 1) {
2173 // bisection if interpolation did not change min / max pos last time
2174 pos = (pos_min + pos_limit) >> 1;
2176 /* linear search if bisection failed, can only happen if there
2177 * are very few or no keyframes between min/max */
2182 else if (pos > pos_limit)
2186 // May pass pos_limit instead of -1.
2187 ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp);
2192 av_log(s, AV_LOG_TRACE, "%"PRId64" %"PRId64" %"PRId64" / %s %s %s"
2193 " target:%s limit:%"PRId64" start:%"PRId64" noc:%d\n",
2194 pos_min, pos, pos_max,
2195 av_ts2str(ts_min), av_ts2str(ts), av_ts2str(ts_max), av_ts2str(target_ts),
2196 pos_limit, start_pos, no_change);
2197 if (ts == AV_NOPTS_VALUE) {
2198 av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
2201 if (target_ts <= ts) {
2202 pos_limit = start_pos - 1;
2206 if (target_ts >= ts) {
2212 pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
2213 ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
2216 ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2218 ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
2219 av_log(s, AV_LOG_TRACE, "pos=0x%"PRIx64" %s<=%s<=%s\n",
2220 pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
2226 static int seek_frame_byte(AVFormatContext *s, int stream_index,
2227 int64_t pos, int flags)
2229 int64_t pos_min, pos_max;
2231 pos_min = s->internal->data_offset;
2232 pos_max = avio_size(s->pb) - 1;
2236 else if (pos > pos_max)
2239 avio_seek(s->pb, pos, SEEK_SET);
2241 s->io_repositioned = 1;
2246 static int seek_frame_generic(AVFormatContext *s, int stream_index,
2247 int64_t timestamp, int flags)
2254 st = s->streams[stream_index];
2256 index = av_index_search_timestamp(st, timestamp, flags);
2258 if (index < 0 && st->nb_index_entries &&
2259 timestamp < st->index_entries[0].timestamp)
2262 if (index < 0 || index == st->nb_index_entries - 1) {
2266 if (st->nb_index_entries) {
2267 av_assert0(st->index_entries);
2268 ie = &st->index_entries[st->nb_index_entries - 1];
2269 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2271 ff_update_cur_dts(s, st, ie->timestamp);
2273 if ((ret = avio_seek(s->pb, s->internal->data_offset, SEEK_SET)) < 0)
2279 read_status = av_read_frame(s, &pkt);
2280 } while (read_status == AVERROR(EAGAIN));
2281 if (read_status < 0)
2283 if (stream_index == pkt.stream_index && pkt.dts > timestamp) {
2284 if (pkt.flags & AV_PKT_FLAG_KEY) {
2285 av_packet_unref(&pkt);
2288 if (nonkey++ > 1000 && st->codecpar->codec_id != AV_CODEC_ID_CDGRAPHICS) {
2289 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);
2290 av_packet_unref(&pkt);
2294 av_packet_unref(&pkt);
2296 index = av_index_search_timestamp(st, timestamp, flags);
2301 ff_read_frame_flush(s);
2302 if (s->iformat->read_seek)
2303 if (s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
2305 ie = &st->index_entries[index];
2306 if ((ret = avio_seek(s->pb, ie->pos, SEEK_SET)) < 0)
2308 ff_update_cur_dts(s, st, ie->timestamp);
2313 static int seek_frame_internal(AVFormatContext *s, int stream_index,
2314 int64_t timestamp, int flags)
2319 if (flags & AVSEEK_FLAG_BYTE) {
2320 if (s->iformat->flags & AVFMT_NO_BYTE_SEEK)
2322 ff_read_frame_flush(s);
2323 return seek_frame_byte(s, stream_index, timestamp, flags);
2326 if (stream_index < 0) {
2327 stream_index = av_find_default_stream_index(s);
2328 if (stream_index < 0)
2331 st = s->streams[stream_index];
2332 /* timestamp for default must be expressed in AV_TIME_BASE units */
2333 timestamp = av_rescale(timestamp, st->time_base.den,
2334 AV_TIME_BASE * (int64_t) st->time_base.num);
2337 /* first, we try the format specific seek */
2338 if (s->iformat->read_seek) {
2339 ff_read_frame_flush(s);
2340 ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
2346 if (s->iformat->read_timestamp &&
2347 !(s->iformat->flags & AVFMT_NOBINSEARCH)) {
2348 ff_read_frame_flush(s);
2349 return ff_seek_frame_binary(s, stream_index, timestamp, flags);
2350 } else if (!(s->iformat->flags & AVFMT_NOGENSEARCH)) {
2351 ff_read_frame_flush(s);
2352 return seek_frame_generic(s, stream_index, timestamp, flags);
2357 int av_seek_frame(AVFormatContext *s, int stream_index,
2358 int64_t timestamp, int flags)
2362 if (s->iformat->read_seek2 && !s->iformat->read_seek) {
2363 int64_t min_ts = INT64_MIN, max_ts = INT64_MAX;
2364 if ((flags & AVSEEK_FLAG_BACKWARD))
2368 return avformat_seek_file(s, stream_index, min_ts, timestamp, max_ts,
2369 flags & ~AVSEEK_FLAG_BACKWARD);
2372 ret = seek_frame_internal(s, stream_index, timestamp, flags);
2375 ret = avformat_queue_attached_pictures(s);
2380 int avformat_seek_file(AVFormatContext *s, int stream_index, int64_t min_ts,
2381 int64_t ts, int64_t max_ts, int flags)
2383 if (min_ts > ts || max_ts < ts)
2385 if (stream_index < -1 || stream_index >= (int)s->nb_streams)
2386 return AVERROR(EINVAL);
2389 flags |= AVSEEK_FLAG_ANY;
2390 flags &= ~AVSEEK_FLAG_BACKWARD;
2392 if (s->iformat->read_seek2) {
2394 ff_read_frame_flush(s);
2396 if (stream_index == -1 && s->nb_streams == 1) {
2397 AVRational time_base = s->streams[0]->time_base;
2398 ts = av_rescale_q(ts, AV_TIME_BASE_Q, time_base);
2399 min_ts = av_rescale_rnd(min_ts, time_base.den,
2400 time_base.num * (int64_t)AV_TIME_BASE,
2401 AV_ROUND_UP | AV_ROUND_PASS_MINMAX);
2402 max_ts = av_rescale_rnd(max_ts, time_base.den,
2403 time_base.num * (int64_t)AV_TIME_BASE,
2404 AV_ROUND_DOWN | AV_ROUND_PASS_MINMAX);
2407 ret = s->iformat->read_seek2(s, stream_index, min_ts,
2411 ret = avformat_queue_attached_pictures(s);
2415 if (s->iformat->read_timestamp) {
2416 // try to seek via read_timestamp()
2419 // Fall back on old API if new is not implemented but old is.
2420 // Note the old API has somewhat different semantics.
2421 if (s->iformat->read_seek || 1) {
2422 int dir = (ts - (uint64_t)min_ts > (uint64_t)max_ts - ts ? AVSEEK_FLAG_BACKWARD : 0);
2423 int ret = av_seek_frame(s, stream_index, ts, flags | dir);
2424 if (ret<0 && ts != min_ts && max_ts != ts) {
2425 ret = av_seek_frame(s, stream_index, dir ? max_ts : min_ts, flags | dir);
2427 ret = av_seek_frame(s, stream_index, ts, flags | (dir^AVSEEK_FLAG_BACKWARD));
2432 // try some generic seek like seek_frame_generic() but with new ts semantics
2433 return -1; //unreachable
2436 int avformat_flush(AVFormatContext *s)
2438 ff_read_frame_flush(s);
2442 /*******************************************************/
2445 * Return TRUE if the stream has accurate duration in any stream.
2447 * @return TRUE if the stream has accurate duration for at least one component.
2449 static int has_duration(AVFormatContext *ic)
2454 for (i = 0; i < ic->nb_streams; i++) {
2455 st = ic->streams[i];
2456 if (st->duration != AV_NOPTS_VALUE)
2459 if (ic->duration != AV_NOPTS_VALUE)
2465 * Estimate the stream timings from the one of each components.
2467 * Also computes the global bitrate if possible.
2469 static void update_stream_timings(AVFormatContext *ic)
2471 int64_t start_time, start_time1, start_time_text, end_time, end_time1;
2472 int64_t duration, duration1, filesize;
2477 start_time = INT64_MAX;
2478 start_time_text = INT64_MAX;
2479 end_time = INT64_MIN;
2480 duration = INT64_MIN;
2481 for (i = 0; i < ic->nb_streams; i++) {
2482 st = ic->streams[i];
2483 if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
2484 start_time1 = av_rescale_q(st->start_time, st->time_base,
2486 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE || st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2487 if (start_time1 < start_time_text)
2488 start_time_text = start_time1;
2490 start_time = FFMIN(start_time, start_time1);
2491 end_time1 = av_rescale_q_rnd(st->duration, st->time_base,
2493 AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
2494 if (end_time1 != AV_NOPTS_VALUE) {
2495 end_time1 += start_time1;
2496 end_time = FFMAX(end_time, end_time1);
2498 for (p = NULL; (p = av_find_program_from_stream(ic, p, i)); ) {
2499 if (p->start_time == AV_NOPTS_VALUE || p->start_time > start_time1)
2500 p->start_time = start_time1;
2501 if (p->end_time < end_time1)
2502 p->end_time = end_time1;
2505 if (st->duration != AV_NOPTS_VALUE) {
2506 duration1 = av_rescale_q(st->duration, st->time_base,
2508 duration = FFMAX(duration, duration1);
2511 if (start_time == INT64_MAX || (start_time > start_time_text && start_time - start_time_text < AV_TIME_BASE))
2512 start_time = start_time_text;
2513 else if (start_time > start_time_text)
2514 av_log(ic, AV_LOG_VERBOSE, "Ignoring outlier non primary stream starttime %f\n", start_time_text / (float)AV_TIME_BASE);
2516 if (start_time != INT64_MAX) {
2517 ic->start_time = start_time;
2518 if (end_time != INT64_MIN) {
2519 if (ic->nb_programs) {
2520 for (i = 0; i < ic->nb_programs; i++) {
2521 p = ic->programs[i];
2522 if (p->start_time != AV_NOPTS_VALUE && p->end_time > p->start_time)
2523 duration = FFMAX(duration, p->end_time - p->start_time);
2526 duration = FFMAX(duration, end_time - start_time);
2529 if (duration != INT64_MIN && duration > 0 && ic->duration == AV_NOPTS_VALUE) {
2530 ic->duration = duration;
2532 if (ic->pb && (filesize = avio_size(ic->pb)) > 0 && ic->duration != AV_NOPTS_VALUE) {
2533 /* compute the bitrate */
2534 double bitrate = (double) filesize * 8.0 * AV_TIME_BASE /
2535 (double) ic->duration;
2536 if (bitrate >= 0 && bitrate <= INT64_MAX)
2537 ic->bit_rate = bitrate;
2541 static void fill_all_stream_timings(AVFormatContext *ic)
2546 update_stream_timings(ic);
2547 for (i = 0; i < ic->nb_streams; i++) {
2548 st = ic->streams[i];
2549 if (st->start_time == AV_NOPTS_VALUE) {
2550 if (ic->start_time != AV_NOPTS_VALUE)
2551 st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q,
2553 if (ic->duration != AV_NOPTS_VALUE)
2554 st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q,
2560 static void estimate_timings_from_bit_rate(AVFormatContext *ic)
2562 int64_t filesize, duration;
2563 int i, show_warning = 0;
2566 /* if bit_rate is already set, we believe it */
2567 if (ic->bit_rate <= 0) {
2569 for (i = 0; i < ic->nb_streams; i++) {
2570 st = ic->streams[i];
2571 if (st->codecpar->bit_rate > 0) {
2572 if (INT_MAX - st->codecpar->bit_rate < bit_rate) {
2576 bit_rate += st->codecpar->bit_rate;
2577 } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && st->codec_info_nb_frames > 1) {
2578 // If we have a videostream with packets but without a bitrate
2579 // then consider the sum not known
2584 ic->bit_rate = bit_rate;
2587 /* if duration is already set, we believe it */
2588 if (ic->duration == AV_NOPTS_VALUE &&
2589 ic->bit_rate != 0) {
2590 filesize = ic->pb ? avio_size(ic->pb) : 0;
2591 if (filesize > ic->internal->data_offset) {
2592 filesize -= ic->internal->data_offset;
2593 for (i = 0; i < ic->nb_streams; i++) {
2594 st = ic->streams[i];
2595 if ( st->time_base.num <= INT64_MAX / ic->bit_rate
2596 && st->duration == AV_NOPTS_VALUE) {
2597 duration = av_rescale(8 * filesize, st->time_base.den,
2599 (int64_t) st->time_base.num);
2600 st->duration = duration;
2607 av_log(ic, AV_LOG_WARNING,
2608 "Estimating duration from bitrate, this may be inaccurate\n");
2611 #define DURATION_MAX_READ_SIZE 250000LL
2612 #define DURATION_MAX_RETRY 6
2614 /* only usable for MPEG-PS streams */
2615 static void estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
2617 AVPacket pkt1, *pkt = &pkt1;
2619 int num, den, read_size, i, ret;
2620 int found_duration = 0;
2622 int64_t filesize, offset, duration;
2625 /* flush packet queue */
2626 flush_packet_queue(ic);
2628 for (i = 0; i < ic->nb_streams; i++) {
2629 st = ic->streams[i];
2630 if (st->start_time == AV_NOPTS_VALUE &&
2631 st->first_dts == AV_NOPTS_VALUE &&
2632 st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN)
2633 av_log(ic, AV_LOG_WARNING,
2634 "start time for stream %d is not set in estimate_timings_from_pts\n", i);
2637 av_parser_close(st->parser);
2642 av_opt_set(ic, "skip_changes", "1", AV_OPT_SEARCH_CHILDREN);
2643 /* estimate the end time (duration) */
2644 /* XXX: may need to support wrapping */
2645 filesize = ic->pb ? avio_size(ic->pb) : 0;
2647 is_end = found_duration;
2648 offset = filesize - (DURATION_MAX_READ_SIZE << retry);
2652 avio_seek(ic->pb, offset, SEEK_SET);
2655 if (read_size >= DURATION_MAX_READ_SIZE << (FFMAX(retry - 1, 0)))
2659 ret = ff_read_packet(ic, pkt);
2660 } while (ret == AVERROR(EAGAIN));
2663 read_size += pkt->size;
2664 st = ic->streams[pkt->stream_index];
2665 if (pkt->pts != AV_NOPTS_VALUE &&
2666 (st->start_time != AV_NOPTS_VALUE ||
2667 st->first_dts != AV_NOPTS_VALUE)) {
2668 if (pkt->duration == 0) {
2669 ff_compute_frame_duration(ic, &num, &den, st, st->parser, pkt);
2671 pkt->duration = av_rescale_rnd(1,
2672 num * (int64_t) st->time_base.den,
2673 den * (int64_t) st->time_base.num,
2677 duration = pkt->pts + pkt->duration;
2679 if (st->start_time != AV_NOPTS_VALUE)
2680 duration -= st->start_time;
2682 duration -= st->first_dts;
2684 if (st->duration == AV_NOPTS_VALUE || st->info->last_duration<= 0 ||
2685 (st->duration < duration && FFABS(duration - st->info->last_duration) < 60LL*st->time_base.den / st->time_base.num))
2686 st->duration = duration;
2687 st->info->last_duration = duration;
2690 av_packet_unref(pkt);
2693 /* check if all audio/video streams have valid duration */
2696 for (i = 0; i < ic->nb_streams; i++) {
2697 st = ic->streams[i];
2698 switch (st->codecpar->codec_type) {
2699 case AVMEDIA_TYPE_VIDEO:
2700 case AVMEDIA_TYPE_AUDIO:
2701 if (st->duration == AV_NOPTS_VALUE)
2708 ++retry <= DURATION_MAX_RETRY);
2710 av_opt_set(ic, "skip_changes", "0", AV_OPT_SEARCH_CHILDREN);
2712 /* warn about audio/video streams which duration could not be estimated */
2713 for (i = 0; i < ic->nb_streams; i++) {
2714 st = ic->streams[i];
2715 if (st->duration == AV_NOPTS_VALUE) {
2716 switch (st->codecpar->codec_type) {
2717 case AVMEDIA_TYPE_VIDEO:
2718 case AVMEDIA_TYPE_AUDIO:
2719 if (st->start_time != AV_NOPTS_VALUE || st->first_dts != AV_NOPTS_VALUE) {
2720 av_log(ic, AV_LOG_DEBUG, "stream %d : no PTS found at end of file, duration not set\n", i);
2722 av_log(ic, AV_LOG_DEBUG, "stream %d : no TS found at start of file, duration not set\n", i);
2726 fill_all_stream_timings(ic);
2728 avio_seek(ic->pb, old_offset, SEEK_SET);
2729 for (i = 0; i < ic->nb_streams; i++) {
2732 st = ic->streams[i];
2733 st->cur_dts = st->first_dts;
2734 st->last_IP_pts = AV_NOPTS_VALUE;
2735 st->last_dts_for_order_check = AV_NOPTS_VALUE;
2736 for (j = 0; j < MAX_REORDER_DELAY + 1; j++)
2737 st->pts_buffer[j] = AV_NOPTS_VALUE;
2741 static void estimate_timings(AVFormatContext *ic, int64_t old_offset)
2745 /* get the file size, if possible */
2746 if (ic->iformat->flags & AVFMT_NOFILE) {
2749 file_size = avio_size(ic->pb);
2750 file_size = FFMAX(0, file_size);
2753 if ((!strcmp(ic->iformat->name, "mpeg") ||
2754 !strcmp(ic->iformat->name, "mpegts")) &&
2755 file_size && ic->pb->seekable) {
2756 /* get accurate estimate from the PTSes */
2757 estimate_timings_from_pts(ic, old_offset);
2758 ic->duration_estimation_method = AVFMT_DURATION_FROM_PTS;
2759 } else if (has_duration(ic)) {
2760 /* at least one component has timings - we use them for all
2762 fill_all_stream_timings(ic);
2763 ic->duration_estimation_method = AVFMT_DURATION_FROM_STREAM;
2765 /* less precise: use bitrate info */
2766 estimate_timings_from_bit_rate(ic);
2767 ic->duration_estimation_method = AVFMT_DURATION_FROM_BITRATE;
2769 update_stream_timings(ic);
2773 AVStream av_unused *st;
2774 for (i = 0; i < ic->nb_streams; i++) {
2775 st = ic->streams[i];
2776 av_log(ic, AV_LOG_TRACE, "%d: start_time: %0.3f duration: %0.3f\n", i,
2777 (double) st->start_time / AV_TIME_BASE,
2778 (double) st->duration / AV_TIME_BASE);
2780 av_log(ic, AV_LOG_TRACE,
2781 "stream: start_time: %0.3f duration: %0.3f bitrate=%"PRId64" kb/s\n",
2782 (double) ic->start_time / AV_TIME_BASE,
2783 (double) ic->duration / AV_TIME_BASE,
2784 (int64_t)ic->bit_rate / 1000);
2788 static int has_codec_parameters(AVStream *st, const char **errmsg_ptr)
2790 AVCodecContext *avctx = st->internal->avctx;
2792 #define FAIL(errmsg) do { \
2794 *errmsg_ptr = errmsg; \
2798 if ( avctx->codec_id == AV_CODEC_ID_NONE
2799 && avctx->codec_type != AVMEDIA_TYPE_DATA)
2800 FAIL("unknown codec");
2801 switch (avctx->codec_type) {
2802 case AVMEDIA_TYPE_AUDIO:
2803 if (!avctx->frame_size && determinable_frame_size(avctx))
2804 FAIL("unspecified frame size");
2805 if (st->info->found_decoder >= 0 &&
2806 avctx->sample_fmt == AV_SAMPLE_FMT_NONE)
2807 FAIL("unspecified sample format");
2808 if (!avctx->sample_rate)
2809 FAIL("unspecified sample rate");
2810 if (!avctx->channels)
2811 FAIL("unspecified number of channels");
2812 if (st->info->found_decoder >= 0 && !st->nb_decoded_frames && avctx->codec_id == AV_CODEC_ID_DTS)
2813 FAIL("no decodable DTS frames");
2815 case AVMEDIA_TYPE_VIDEO:
2817 FAIL("unspecified size");
2818 if (st->info->found_decoder >= 0 && avctx->pix_fmt == AV_PIX_FMT_NONE)
2819 FAIL("unspecified pixel format");
2820 if (st->codecpar->codec_id == AV_CODEC_ID_RV30 || st->codecpar->codec_id == AV_CODEC_ID_RV40)
2821 if (!st->sample_aspect_ratio.num && !st->codecpar->sample_aspect_ratio.num && !st->codec_info_nb_frames)
2822 FAIL("no frame in rv30/40 and no sar");
2824 case AVMEDIA_TYPE_SUBTITLE:
2825 if (avctx->codec_id == AV_CODEC_ID_HDMV_PGS_SUBTITLE && !avctx->width)
2826 FAIL("unspecified size");
2828 case AVMEDIA_TYPE_DATA:
2829 if (avctx->codec_id == AV_CODEC_ID_NONE) return 1;
2835 /* returns 1 or 0 if or if not decoded data was returned, or a negative error */
2836 static int try_decode_frame(AVFormatContext *s, AVStream *st, AVPacket *avpkt,
2837 AVDictionary **options)
2839 AVCodecContext *avctx = st->internal->avctx;
2840 const AVCodec *codec;
2841 int got_picture = 1, ret = 0;
2842 AVFrame *frame = av_frame_alloc();
2843 AVSubtitle subtitle;
2844 AVPacket pkt = *avpkt;
2845 int do_skip_frame = 0;
2846 enum AVDiscard skip_frame;
2849 return AVERROR(ENOMEM);
2851 if (!avcodec_is_open(avctx) &&
2852 st->info->found_decoder <= 0 &&
2853 (st->codecpar->codec_id != -st->info->found_decoder || !st->codecpar->codec_id)) {
2854 AVDictionary *thread_opt = NULL;
2856 codec = find_decoder(s, st, st->codecpar->codec_id);
2859 st->info->found_decoder = -st->codecpar->codec_id;
2864 /* Force thread count to 1 since the H.264 decoder will not extract
2865 * SPS and PPS to extradata during multi-threaded decoding. */
2866 av_dict_set(options ? options : &thread_opt, "threads", "1", 0);
2867 if (s->codec_whitelist)
2868 av_dict_set(options ? options : &thread_opt, "codec_whitelist", s->codec_whitelist, 0);
2869 ret = avcodec_open2(avctx, codec, options ? options : &thread_opt);
2871 av_dict_free(&thread_opt);
2873 st->info->found_decoder = -avctx->codec_id;
2876 st->info->found_decoder = 1;
2877 } else if (!st->info->found_decoder)
2878 st->info->found_decoder = 1;
2880 if (st->info->found_decoder < 0) {
2885 if (avpriv_codec_get_cap_skip_frame_fill_param(avctx->codec)) {
2887 skip_frame = avctx->skip_frame;
2888 avctx->skip_frame = AVDISCARD_ALL;
2891 while ((pkt.size > 0 || (!pkt.data && got_picture)) &&
2893 (!has_codec_parameters(st, NULL) || !has_decode_delay_been_guessed(st) ||
2894 (!st->codec_info_nb_frames &&
2895 (avctx->codec->capabilities & AV_CODEC_CAP_CHANNEL_CONF)))) {
2897 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2898 avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2899 ret = avcodec_send_packet(avctx, &pkt);
2900 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
2904 ret = avcodec_receive_frame(avctx, frame);
2907 if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
2909 } else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
2910 ret = avcodec_decode_subtitle2(avctx, &subtitle,
2911 &got_picture, &pkt);
2917 st->nb_decoded_frames++;
2922 if (!pkt.data && !got_picture)
2926 if (do_skip_frame) {
2927 avctx->skip_frame = skip_frame;
2930 av_frame_free(&frame);
2934 unsigned int ff_codec_get_tag(const AVCodecTag *tags, enum AVCodecID id)
2936 while (tags->id != AV_CODEC_ID_NONE) {
2944 enum AVCodecID ff_codec_get_id(const AVCodecTag *tags, unsigned int tag)
2947 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2948 if (tag == tags[i].tag)
2950 for (i = 0; tags[i].id != AV_CODEC_ID_NONE; i++)
2951 if (avpriv_toupper4(tag) == avpriv_toupper4(tags[i].tag))
2953 return AV_CODEC_ID_NONE;
2956 enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags)
2961 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2963 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2965 return AV_CODEC_ID_NONE;
2970 if (sflags & (1 << (bps - 1))) {
2973 return AV_CODEC_ID_PCM_S8;
2975 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2977 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2979 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2981 return AV_CODEC_ID_NONE;
2986 return AV_CODEC_ID_PCM_U8;
2988 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2990 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2992 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2994 return AV_CODEC_ID_NONE;
3000 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3003 if (!av_codec_get_tag2(tags, id, &tag))
3008 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3012 for (i = 0; tags && tags[i]; i++) {
3013 const AVCodecTag *codec_tags = tags[i];
3014 while (codec_tags->id != AV_CODEC_ID_NONE) {
3015 if (codec_tags->id == id) {
3016 *tag = codec_tags->tag;
3025 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3028 for (i = 0; tags && tags[i]; i++) {
3029 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3030 if (id != AV_CODEC_ID_NONE)
3033 return AV_CODEC_ID_NONE;
3036 static void compute_chapters_end(AVFormatContext *s)
3039 int64_t max_time = 0;
3041 if (s->duration > 0)
3042 max_time = s->duration +
3043 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3045 for (i = 0; i < s->nb_chapters; i++)
3046 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3047 AVChapter *ch = s->chapters[i];
3048 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3052 for (j = 0; j < s->nb_chapters; j++) {
3053 AVChapter *ch1 = s->chapters[j];
3054 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3056 if (j != i && next_start > ch->start && next_start < end)
3059 ch->end = (end == INT64_MAX) ? ch->start : end;
3063 static int get_std_framerate(int i)
3066 return (i + 1) * 1001;
3070 return (i + 31) * 1001 * 12;
3074 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3078 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3081 /* Is the time base unreliable?
3082 * This is a heuristic to balance between quick acceptance of the values in
3083 * the headers vs. some extra checks.
3084 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3085 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3086 * And there are "variable" fps files this needs to detect as well. */
3087 static int tb_unreliable(AVCodecContext *c)
3089 if (c->time_base.den >= 101LL * c->time_base.num ||
3090 c->time_base.den < 5LL * c->time_base.num ||
3091 // c->codec_tag == AV_RL32("DIVX") ||
3092 // c->codec_tag == AV_RL32("XVID") ||
3093 c->codec_tag == AV_RL32("mp4v") ||
3094 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3095 c->codec_id == AV_CODEC_ID_GIF ||
3096 c->codec_id == AV_CODEC_ID_HEVC ||
3097 c->codec_id == AV_CODEC_ID_H264)
3102 int ff_alloc_extradata(AVCodecParameters *par, int size)
3106 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
3107 par->extradata = NULL;
3108 par->extradata_size = 0;
3109 return AVERROR(EINVAL);
3111 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3112 if (par->extradata) {
3113 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3114 par->extradata_size = size;
3117 par->extradata_size = 0;
3118 ret = AVERROR(ENOMEM);
3123 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3125 int ret = ff_alloc_extradata(par, size);
3128 ret = avio_read(pb, par->extradata, size);
3130 av_freep(&par->extradata);
3131 par->extradata_size = 0;
3132 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3133 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3139 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3142 int64_t last = st->info->last_dts;
3144 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3145 && ts - (uint64_t)last < INT64_MAX) {
3146 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3147 int64_t duration = ts - last;
3149 if (!st->info->duration_error)
3150 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3151 if (!st->info->duration_error)
3152 return AVERROR(ENOMEM);
3154 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3155 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3156 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3157 if (st->info->duration_error[0][1][i] < 1e10) {
3158 int framerate = get_std_framerate(i);
3159 double sdts = dts*framerate/(1001*12);
3160 for (j= 0; j<2; j++) {
3161 int64_t ticks = llrint(sdts+j*0.5);
3162 double error= sdts - ticks + j*0.5;
3163 st->info->duration_error[j][0][i] += error;
3164 st->info->duration_error[j][1][i] += error*error;
3168 st->info->duration_count++;
3169 st->info->rfps_duration_sum += duration;
3171 if (st->info->duration_count % 10 == 0) {
3172 int n = st->info->duration_count;
3173 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3174 if (st->info->duration_error[0][1][i] < 1e10) {
3175 double a0 = st->info->duration_error[0][0][i] / n;
3176 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3177 double a1 = st->info->duration_error[1][0][i] / n;
3178 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3179 if (error0 > 0.04 && error1 > 0.04) {
3180 st->info->duration_error[0][1][i] = 2e10;
3181 st->info->duration_error[1][1][i] = 2e10;
3187 // ignore the first 4 values, they might have some random jitter
3188 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3189 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3191 if (ts != AV_NOPTS_VALUE)
3192 st->info->last_dts = ts;
3197 void ff_rfps_calculate(AVFormatContext *ic)
3201 for (i = 0; i < ic->nb_streams; i++) {
3202 AVStream *st = ic->streams[i];
3204 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3206 // the check for tb_unreliable() is not completely correct, since this is not about handling
3207 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3208 // ipmovie.c produces.
3209 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)
3210 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);
3211 if (st->info->duration_count>1 && !st->r_frame_rate.num
3212 && tb_unreliable(st->internal->avctx)) {
3214 double best_error= 0.01;
3215 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3217 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3220 if (st->info->codec_info_duration &&
3221 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3223 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3226 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3229 for (k= 0; k<2; k++) {
3230 int n = st->info->duration_count;
3231 double a= st->info->duration_error[k][0][j] / n;
3232 double error= st->info->duration_error[k][1][j]/n - a*a;
3234 if (error < best_error && best_error> 0.000000001) {
3236 num = get_std_framerate(j);
3239 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3242 // do not increase frame rate by more than 1 % in order to match a standard rate.
3243 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3244 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3246 if ( !st->avg_frame_rate.num
3247 && st->r_frame_rate.num && st->info->rfps_duration_sum
3248 && st->info->codec_info_duration <= 0
3249 && st->info->duration_count > 2
3250 && 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
3252 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3253 st->avg_frame_rate = st->r_frame_rate;
3256 av_freep(&st->info->duration_error);
3257 st->info->last_dts = AV_NOPTS_VALUE;
3258 st->info->duration_count = 0;
3259 st->info->rfps_duration_sum = 0;
3263 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3265 int i, count, ret = 0, j;
3268 AVCodecContext *avctx;
3269 AVPacket pkt1, *pkt;
3270 int64_t old_offset = avio_tell(ic->pb);
3271 // new streams might appear, no options for those
3272 int orig_nb_streams = ic->nb_streams;
3274 int64_t max_analyze_duration = ic->max_analyze_duration;
3275 int64_t max_stream_analyze_duration;
3276 int64_t max_subtitle_analyze_duration;
3277 int64_t probesize = ic->probesize;
3278 int eof_reached = 0;
3280 flush_codecs = probesize > 0;
3282 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3284 max_stream_analyze_duration = max_analyze_duration;
3285 max_subtitle_analyze_duration = max_analyze_duration;
3286 if (!max_analyze_duration) {
3287 max_stream_analyze_duration =
3288 max_analyze_duration = 5*AV_TIME_BASE;
3289 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3290 if (!strcmp(ic->iformat->name, "flv"))
3291 max_stream_analyze_duration = 90*AV_TIME_BASE;
3292 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3293 max_stream_analyze_duration = 7*AV_TIME_BASE;
3297 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d\n",
3298 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count);
3300 for (i = 0; i < ic->nb_streams; i++) {
3301 const AVCodec *codec;
3302 AVDictionary *thread_opt = NULL;
3303 st = ic->streams[i];
3304 avctx = st->internal->avctx;
3306 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3307 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3308 /* if (!st->time_base.num)
3310 if (!avctx->time_base.num)
3311 avctx->time_base = st->time_base;
3313 // only for the split stuff
3314 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3315 st->parser = av_parser_init(st->codecpar->codec_id);
3317 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3318 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3319 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3320 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3322 } else if (st->need_parsing) {
3323 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3324 "%s, packets or times may be invalid.\n",
3325 avcodec_get_name(st->codecpar->codec_id));
3329 /* check if the caller has overridden the codec id */
3330 #if FF_API_LAVF_AVCTX
3331 FF_DISABLE_DEPRECATION_WARNINGS
3332 if (st->codec->codec_id != st->internal->orig_codec_id) {
3333 st->codecpar->codec_id = st->codec->codec_id;
3334 st->codecpar->codec_type = st->codec->codec_type;
3335 st->internal->orig_codec_id = st->codec->codec_id;
3337 FF_ENABLE_DEPRECATION_WARNINGS
3339 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3340 st->internal->orig_codec_id = st->codecpar->codec_id;
3342 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3344 goto find_stream_info_err;
3345 if (st->request_probe <= 0)
3346 st->internal->avctx_inited = 1;
3348 codec = find_decoder(ic, st, st->codecpar->codec_id);
3350 /* Force thread count to 1 since the H.264 decoder will not extract
3351 * SPS and PPS to extradata during multi-threaded decoding. */
3352 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3354 if (ic->codec_whitelist)
3355 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3357 /* Ensure that subtitle_header is properly set. */
3358 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3359 && codec && !avctx->codec) {
3360 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3361 av_log(ic, AV_LOG_WARNING,
3362 "Failed to open codec in av_find_stream_info\n");
3365 // Try to just open decoders, in case this is enough to get parameters.
3366 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3367 if (codec && !avctx->codec)
3368 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3369 av_log(ic, AV_LOG_WARNING,
3370 "Failed to open codec in av_find_stream_info\n");
3373 av_dict_free(&thread_opt);
3376 for (i = 0; i < ic->nb_streams; i++) {
3377 #if FF_API_R_FRAME_RATE
3378 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3380 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3381 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3387 int analyzed_all_streams;
3388 if (ff_check_interrupt(&ic->interrupt_callback)) {
3390 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3394 /* check if one codec still needs to be handled */
3395 for (i = 0; i < ic->nb_streams; i++) {
3396 int fps_analyze_framecount = 20;
3398 st = ic->streams[i];
3399 if (!has_codec_parameters(st, NULL))
3401 /* If the timebase is coarse (like the usual millisecond precision
3402 * of mkv), we need to analyze more frames to reliably arrive at
3403 * the correct fps. */
3404 if (av_q2d(st->time_base) > 0.0005)
3405 fps_analyze_framecount *= 2;
3406 if (!tb_unreliable(st->internal->avctx))
3407 fps_analyze_framecount = 0;
3408 if (ic->fps_probe_size >= 0)
3409 fps_analyze_framecount = ic->fps_probe_size;
3410 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3411 fps_analyze_framecount = 0;
3412 /* variable fps and no guess at the real fps */
3413 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3414 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3415 int count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3416 st->info->codec_info_duration_fields/2 :
3417 st->info->duration_count;
3418 if (count < fps_analyze_framecount)
3421 if (st->parser && st->parser->parser->split &&
3422 !st->codecpar->extradata)
3424 if (st->first_dts == AV_NOPTS_VALUE &&
3425 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3426 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3427 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3428 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3431 analyzed_all_streams = 0;
3432 if (i == ic->nb_streams) {
3433 analyzed_all_streams = 1;
3434 /* NOTE: If the format has no header, then we need to read some
3435 * packets to get most of the streams, so we cannot stop here. */
3436 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3437 /* If we found the info for all the codecs, we can stop. */
3439 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3444 /* We did not get all the codec info, but we read too much data. */
3445 if (read_size >= probesize) {
3447 av_log(ic, AV_LOG_DEBUG,
3448 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3449 for (i = 0; i < ic->nb_streams; i++)
3450 if (!ic->streams[i]->r_frame_rate.num &&
3451 ic->streams[i]->info->duration_count <= 1 &&
3452 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3453 strcmp(ic->iformat->name, "image2"))
3454 av_log(ic, AV_LOG_WARNING,
3455 "Stream #%d: not enough frames to estimate rate; "
3456 "consider increasing probesize\n", i);
3460 /* NOTE: A new stream can be added there if no header in file
3461 * (AVFMTCTX_NOHEADER). */
3462 ret = read_frame_internal(ic, &pkt1);
3463 if (ret == AVERROR(EAGAIN))
3474 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3475 ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
3476 &ic->internal->packet_buffer_end, 0);
3478 goto find_stream_info_err;
3481 st = ic->streams[pkt->stream_index];
3482 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3483 read_size += pkt->size;
3485 avctx = st->internal->avctx;
3486 if (!st->internal->avctx_inited) {
3487 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3489 goto find_stream_info_err;
3490 st->internal->avctx_inited = 1;
3493 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3494 /* check for non-increasing dts */
3495 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3496 st->info->fps_last_dts >= pkt->dts) {
3497 av_log(ic, AV_LOG_DEBUG,
3498 "Non-increasing DTS in stream %d: packet %d with DTS "
3499 "%"PRId64", packet %d with DTS %"PRId64"\n",
3500 st->index, st->info->fps_last_dts_idx,
3501 st->info->fps_last_dts, st->codec_info_nb_frames,
3503 st->info->fps_first_dts =
3504 st->info->fps_last_dts = AV_NOPTS_VALUE;
3506 /* Check for a discontinuity in dts. If the difference in dts
3507 * is more than 1000 times the average packet duration in the
3508 * sequence, we treat it as a discontinuity. */
3509 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3510 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3511 (pkt->dts - st->info->fps_last_dts) / 1000 >
3512 (st->info->fps_last_dts - st->info->fps_first_dts) /
3513 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3514 av_log(ic, AV_LOG_WARNING,
3515 "DTS discontinuity in stream %d: packet %d with DTS "
3516 "%"PRId64", packet %d with DTS %"PRId64"\n",
3517 st->index, st->info->fps_last_dts_idx,
3518 st->info->fps_last_dts, st->codec_info_nb_frames,
3520 st->info->fps_first_dts =
3521 st->info->fps_last_dts = AV_NOPTS_VALUE;
3524 /* update stored dts values */
3525 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3526 st->info->fps_first_dts = pkt->dts;
3527 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3529 st->info->fps_last_dts = pkt->dts;
3530 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3532 if (st->codec_info_nb_frames>1) {
3536 if (st->time_base.den > 0)
3537 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3538 if (st->avg_frame_rate.num > 0)
3539 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3542 && st->codec_info_nb_frames>30
3543 && st->info->fps_first_dts != AV_NOPTS_VALUE
3544 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3545 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3547 if (analyzed_all_streams) limit = max_analyze_duration;
3548 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3549 else limit = max_stream_analyze_duration;
3552 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3554 t, pkt->stream_index);
3555 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3556 av_packet_unref(pkt);
3559 if (pkt->duration) {
3560 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3561 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3563 st->info->codec_info_duration += pkt->duration;
3564 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3567 #if FF_API_R_FRAME_RATE
3568 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
3569 ff_rfps_add_frame(ic, st, pkt->dts);
3571 if (st->parser && st->parser->parser->split && !avctx->extradata) {
3572 int i = st->parser->parser->split(avctx, pkt->data, pkt->size);
3573 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3574 avctx->extradata_size = i;
3575 avctx->extradata = av_mallocz(avctx->extradata_size +
3576 AV_INPUT_BUFFER_PADDING_SIZE);
3577 if (!avctx->extradata)
3578 return AVERROR(ENOMEM);
3579 memcpy(avctx->extradata, pkt->data,
3580 avctx->extradata_size);
3584 /* If still no information, we try to open the codec and to
3585 * decompress the frame. We try to avoid that in most cases as
3586 * it takes longer and uses more memory. For MPEG-4, we need to
3587 * decompress for QuickTime.
3589 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3590 * least one frame of codec data, this makes sure the codec initializes
3591 * the channel configuration and does not only trust the values from
3593 try_decode_frame(ic, st, pkt,
3594 (options && i < orig_nb_streams) ? &options[i] : NULL);
3596 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3597 av_packet_unref(pkt);
3599 st->codec_info_nb_frames++;
3603 if (eof_reached && ic->internal->packet_buffer) {
3605 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3606 // EOF already reached while reading the stream above.
3607 // So continue with reoordering DTS with whatever delay we have.
3608 if (!has_decode_delay_been_guessed(st)) {
3609 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3615 AVPacket empty_pkt = { 0 };
3617 av_init_packet(&empty_pkt);
3619 for (i = 0; i < ic->nb_streams; i++) {
3621 st = ic->streams[i];
3623 /* flush the decoders */
3624 if (st->info->found_decoder == 1) {
3626 err = try_decode_frame(ic, st, &empty_pkt,
3627 (options && i < orig_nb_streams)
3628 ? &options[i] : NULL);
3629 } while (err > 0 && !has_codec_parameters(st, NULL));
3632 av_log(ic, AV_LOG_INFO,
3633 "decoding for stream %d failed\n", st->index);
3639 // close codecs which were opened in try_decode_frame()
3640 for (i = 0; i < ic->nb_streams; i++) {
3641 st = ic->streams[i];
3642 avcodec_close(st->internal->avctx);
3645 ff_rfps_calculate(ic);
3647 for (i = 0; i < ic->nb_streams; i++) {
3648 st = ic->streams[i];
3649 avctx = st->internal->avctx;
3650 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3651 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3652 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3653 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3654 avctx->codec_tag= tag;
3657 /* estimate average framerate if not set by demuxer */
3658 if (st->info->codec_info_duration_fields &&
3659 !st->avg_frame_rate.num &&
3660 st->info->codec_info_duration) {
3662 double best_error = 0.01;
3664 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3665 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3666 st->info->codec_info_duration < 0)
3668 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3669 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3670 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3672 /* Round guessed framerate to a "standard" framerate if it's
3673 * within 1% of the original estimate. */
3674 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3675 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3676 double error = fabs(av_q2d(st->avg_frame_rate) /
3677 av_q2d(std_fps) - 1);
3679 if (error < best_error) {
3681 best_fps = std_fps.num;
3685 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3686 best_fps, 12 * 1001, INT_MAX);
3689 if (!st->r_frame_rate.num) {
3690 if ( avctx->time_base.den * (int64_t) st->time_base.num
3691 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
3692 st->r_frame_rate.num = avctx->time_base.den;
3693 st->r_frame_rate.den = avctx->time_base.num * avctx->ticks_per_frame;
3695 st->r_frame_rate.num = st->time_base.den;
3696 st->r_frame_rate.den = st->time_base.num;
3699 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3700 AVRational hw_ratio = { avctx->height, avctx->width };
3701 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3704 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3705 if (!avctx->bits_per_coded_sample)
3706 avctx->bits_per_coded_sample =
3707 av_get_bits_per_sample(avctx->codec_id);
3708 // set stream disposition based on audio service type
3709 switch (avctx->audio_service_type) {
3710 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3711 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3713 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3714 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3716 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3717 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
3719 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3720 st->disposition = AV_DISPOSITION_COMMENT;
3722 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3723 st->disposition = AV_DISPOSITION_KARAOKE;
3730 estimate_timings(ic, old_offset);
3732 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
3734 if (ret >= 0 && ic->nb_streams)
3735 /* We could not have all the codec parameters before EOF. */
3737 for (i = 0; i < ic->nb_streams; i++) {
3739 st = ic->streams[i];
3741 /* if no packet was ever seen, update context now for has_codec_parameters */
3742 if (!st->internal->avctx_inited) {
3743 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
3745 goto find_stream_info_err;
3747 if (!has_codec_parameters(st, &errmsg)) {
3749 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
3750 av_log(ic, AV_LOG_WARNING,
3751 "Could not find codec parameters for stream %d (%s): %s\n"
3752 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3759 compute_chapters_end(ic);
3761 /* update the stream parameters from the internal codec contexts */
3762 for (i = 0; i < ic->nb_streams; i++) {
3763 st = ic->streams[i];
3765 if (st->internal->avctx_inited) {
3766 int orig_w = st->codecpar->width;
3767 int orig_h = st->codecpar->height;
3768 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
3770 goto find_stream_info_err;
3771 // The decoder might reduce the video size by the lowres factor.
3772 if (av_codec_get_lowres(st->internal->avctx) && orig_w) {
3773 st->codecpar->width = orig_w;
3774 st->codecpar->height = orig_h;
3778 #if FF_API_LAVF_AVCTX
3779 FF_DISABLE_DEPRECATION_WARNINGS
3780 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
3782 goto find_stream_info_err;
3784 // The old API (AVStream.codec) "requires" the resolution to be adjusted
3785 // by the lowres factor.
3786 if (av_codec_get_lowres(st->internal->avctx) && st->internal->avctx->width) {
3787 av_codec_set_lowres(st->codec, av_codec_get_lowres(st->internal->avctx));
3788 st->codec->width = st->internal->avctx->width;
3789 st->codec->height = st->internal->avctx->height;
3790 st->codec->coded_width = st->internal->avctx->coded_width;
3791 st->codec->coded_height = st->internal->avctx->coded_height;
3794 if (st->codec->codec_tag != MKTAG('t','m','c','d'))
3795 st->codec->time_base = st->internal->avctx->time_base;
3796 st->codec->framerate = st->avg_frame_rate;
3798 if (st->internal->avctx->subtitle_header) {
3799 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
3800 if (!st->codec->subtitle_header)
3801 goto find_stream_info_err;
3802 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
3803 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
3804 st->codec->subtitle_header_size);
3806 FF_ENABLE_DEPRECATION_WARNINGS
3809 st->internal->avctx_inited = 0;
3812 find_stream_info_err:
3813 for (i = 0; i < ic->nb_streams; i++) {
3814 st = ic->streams[i];
3816 av_freep(&st->info->duration_error);
3817 av_freep(&ic->streams[i]->info);
3820 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3821 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3825 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3829 for (i = 0; i < ic->nb_programs; i++) {
3830 if (ic->programs[i] == last) {
3834 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3835 if (ic->programs[i]->stream_index[j] == s)
3836 return ic->programs[i];
3842 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
3843 int wanted_stream_nb, int related_stream,
3844 AVCodec **decoder_ret, int flags)
3846 int i, nb_streams = ic->nb_streams;
3847 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3848 unsigned *program = NULL;
3849 const AVCodec *decoder = NULL, *best_decoder = NULL;
3851 if (related_stream >= 0 && wanted_stream_nb < 0) {
3852 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3854 program = p->stream_index;
3855 nb_streams = p->nb_stream_indexes;
3858 for (i = 0; i < nb_streams; i++) {
3859 int real_stream_index = program ? program[i] : i;
3860 AVStream *st = ic->streams[real_stream_index];
3861 AVCodecParameters *par = st->codecpar;
3862 if (par->codec_type != type)
3864 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3866 if (wanted_stream_nb != real_stream_index &&
3867 st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED |
3868 AV_DISPOSITION_VISUAL_IMPAIRED))
3870 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
3873 decoder = find_decoder(ic, st, par->codec_id);
3876 ret = AVERROR_DECODER_NOT_FOUND;
3880 count = st->codec_info_nb_frames;
3881 bitrate = par->bit_rate;
3882 multiframe = FFMIN(5, count);
3883 if ((best_multiframe > multiframe) ||
3884 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3885 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3888 best_bitrate = bitrate;
3889 best_multiframe = multiframe;
3890 ret = real_stream_index;
3891 best_decoder = decoder;
3892 if (program && i == nb_streams - 1 && ret < 0) {
3894 nb_streams = ic->nb_streams;
3895 /* no related stream found, try again with everything */
3900 *decoder_ret = (AVCodec*)best_decoder;
3904 /*******************************************************/
3906 int av_read_play(AVFormatContext *s)
3908 if (s->iformat->read_play)
3909 return s->iformat->read_play(s);
3911 return avio_pause(s->pb, 0);
3912 return AVERROR(ENOSYS);
3915 int av_read_pause(AVFormatContext *s)
3917 if (s->iformat->read_pause)
3918 return s->iformat->read_pause(s);
3920 return avio_pause(s->pb, 1);
3921 return AVERROR(ENOSYS);
3924 static void free_stream(AVStream **pst)
3926 AVStream *st = *pst;
3932 for (i = 0; i < st->nb_side_data; i++)
3933 av_freep(&st->side_data[i].data);
3934 av_freep(&st->side_data);
3937 av_parser_close(st->parser);
3939 if (st->attached_pic.data)
3940 av_packet_unref(&st->attached_pic);
3943 avcodec_free_context(&st->internal->avctx);
3945 av_freep(&st->internal);
3947 av_dict_free(&st->metadata);
3948 avcodec_parameters_free(&st->codecpar);
3949 av_freep(&st->probe_data.buf);
3950 av_freep(&st->index_entries);
3951 #if FF_API_LAVF_AVCTX
3952 FF_DISABLE_DEPRECATION_WARNINGS
3953 av_freep(&st->codec->extradata);
3954 av_freep(&st->codec->subtitle_header);
3955 av_freep(&st->codec);
3956 FF_ENABLE_DEPRECATION_WARNINGS
3958 av_freep(&st->priv_data);
3960 av_freep(&st->info->duration_error);
3961 av_freep(&st->info);
3962 av_freep(&st->recommended_encoder_configuration);
3963 av_freep(&st->priv_pts);
3968 void ff_free_stream(AVFormatContext *s, AVStream *st)
3970 av_assert0(s->nb_streams>0);
3971 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
3973 free_stream(&s->streams[ --s->nb_streams ]);
3976 void avformat_free_context(AVFormatContext *s)
3984 if (s->iformat && s->iformat->priv_class && s->priv_data)
3985 av_opt_free(s->priv_data);
3986 if (s->oformat && s->oformat->priv_class && s->priv_data)
3987 av_opt_free(s->priv_data);
3989 for (i = s->nb_streams - 1; i >= 0; i--)
3990 ff_free_stream(s, s->streams[i]);
3993 for (i = s->nb_programs - 1; i >= 0; i--) {
3994 av_dict_free(&s->programs[i]->metadata);
3995 av_freep(&s->programs[i]->stream_index);
3996 av_freep(&s->programs[i]);
3998 av_freep(&s->programs);
3999 av_freep(&s->priv_data);
4000 while (s->nb_chapters--) {
4001 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4002 av_freep(&s->chapters[s->nb_chapters]);
4004 av_freep(&s->chapters);
4005 av_dict_free(&s->metadata);
4006 av_freep(&s->streams);
4007 av_freep(&s->internal);
4008 flush_packet_queue(s);
4012 void avformat_close_input(AVFormatContext **ps)
4023 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4024 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4027 flush_packet_queue(s);
4030 if (s->iformat->read_close)
4031 s->iformat->read_close(s);
4033 avformat_free_context(s);
4040 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4046 if (s->nb_streams >= INT_MAX/sizeof(*streams))
4048 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4051 s->streams = streams;
4053 st = av_mallocz(sizeof(AVStream));
4056 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4060 st->info->last_dts = AV_NOPTS_VALUE;
4062 #if FF_API_LAVF_AVCTX
4063 FF_DISABLE_DEPRECATION_WARNINGS
4064 st->codec = avcodec_alloc_context3(c);
4070 FF_ENABLE_DEPRECATION_WARNINGS
4073 st->internal = av_mallocz(sizeof(*st->internal));
4077 st->codecpar = avcodec_parameters_alloc();
4081 st->internal->avctx = avcodec_alloc_context3(NULL);
4082 if (!st->internal->avctx)
4086 #if FF_API_LAVF_AVCTX
4087 FF_DISABLE_DEPRECATION_WARNINGS
4088 /* no default bitrate if decoding */
4089 st->codec->bit_rate = 0;
4090 FF_ENABLE_DEPRECATION_WARNINGS
4093 /* default pts setting is MPEG-like */
4094 avpriv_set_pts_info(st, 33, 1, 90000);
4095 /* we set the current DTS to 0 so that formats without any timestamps
4096 * but durations get some timestamps, formats with some unknown
4097 * timestamps have their first few packets buffered and the
4098 * timestamps corrected before they are returned to the user */
4099 st->cur_dts = RELATIVE_TS_BASE;
4101 st->cur_dts = AV_NOPTS_VALUE;
4104 st->index = s->nb_streams;
4105 st->start_time = AV_NOPTS_VALUE;
4106 st->duration = AV_NOPTS_VALUE;
4107 st->first_dts = AV_NOPTS_VALUE;
4108 st->probe_packets = MAX_PROBE_PACKETS;
4109 st->pts_wrap_reference = AV_NOPTS_VALUE;
4110 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4112 st->last_IP_pts = AV_NOPTS_VALUE;
4113 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4114 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4115 st->pts_buffer[i] = AV_NOPTS_VALUE;
4117 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4119 #if FF_API_R_FRAME_RATE
4120 st->info->last_dts = AV_NOPTS_VALUE;
4122 st->info->fps_first_dts = AV_NOPTS_VALUE;
4123 st->info->fps_last_dts = AV_NOPTS_VALUE;
4125 st->inject_global_side_data = s->internal->inject_global_side_data;
4127 st->internal->need_context_update = 1;
4129 s->streams[s->nb_streams++] = st;
4136 AVProgram *av_new_program(AVFormatContext *ac, int id)
4138 AVProgram *program = NULL;
4141 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4143 for (i = 0; i < ac->nb_programs; i++)
4144 if (ac->programs[i]->id == id)
4145 program = ac->programs[i];
4148 program = av_mallocz(sizeof(AVProgram));
4151 dynarray_add(&ac->programs, &ac->nb_programs, program);
4152 program->discard = AVDISCARD_NONE;
4155 program->pts_wrap_reference = AV_NOPTS_VALUE;
4156 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4158 program->start_time =
4159 program->end_time = AV_NOPTS_VALUE;
4164 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4165 int64_t start, int64_t end, const char *title)
4167 AVChapter *chapter = NULL;
4170 if (end != AV_NOPTS_VALUE && start > end) {
4171 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4175 for (i = 0; i < s->nb_chapters; i++)
4176 if (s->chapters[i]->id == id)
4177 chapter = s->chapters[i];
4180 chapter = av_mallocz(sizeof(AVChapter));
4183 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4185 av_dict_set(&chapter->metadata, "title", title, 0);
4187 chapter->time_base = time_base;
4188 chapter->start = start;
4194 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4197 AVProgram *program = NULL;
4200 if (idx >= ac->nb_streams) {
4201 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4205 for (i = 0; i < ac->nb_programs; i++) {
4206 if (ac->programs[i]->id != progid)
4208 program = ac->programs[i];
4209 for (j = 0; j < program->nb_stream_indexes; j++)
4210 if (program->stream_index[j] == idx)
4213 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4216 program->stream_index = tmp;
4217 program->stream_index[program->nb_stream_indexes++] = idx;
4222 uint64_t ff_ntp_time(void)
4224 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4227 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4230 char *q, buf1[20], c;
4231 int nd, len, percentd_found;
4243 while (av_isdigit(*p))
4244 nd = nd * 10 + *p++ - '0';
4246 } while (av_isdigit(c));
4257 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4259 if ((q - buf + len) > buf_size - 1)
4261 memcpy(q, buf1, len);
4269 if ((q - buf) < buf_size - 1)
4273 if (!percentd_found)
4282 void av_url_split(char *proto, int proto_size,
4283 char *authorization, int authorization_size,
4284 char *hostname, int hostname_size,
4285 int *port_ptr, char *path, int path_size, const char *url)
4287 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4293 if (authorization_size > 0)
4294 authorization[0] = 0;
4295 if (hostname_size > 0)
4300 /* parse protocol */
4301 if ((p = strchr(url, ':'))) {
4302 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4309 /* no protocol means plain filename */
4310 av_strlcpy(path, url, path_size);
4314 /* separate path from hostname */
4315 ls = strchr(p, '/');
4316 ls2 = strchr(p, '?');
4320 ls = FFMIN(ls, ls2);
4322 av_strlcpy(path, ls, path_size);
4324 ls = &p[strlen(p)]; // XXX
4326 /* the rest is hostname, use that to parse auth/port */
4328 /* authorization (user[:pass]@hostname) */
4330 while ((at = strchr(p, '@')) && at < ls) {
4331 av_strlcpy(authorization, at2,
4332 FFMIN(authorization_size, at + 1 - at2));
4333 p = at + 1; /* skip '@' */
4336 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4338 av_strlcpy(hostname, p + 1,
4339 FFMIN(hostname_size, brk - p));
4340 if (brk[1] == ':' && port_ptr)
4341 *port_ptr = atoi(brk + 2);
4342 } else if ((col = strchr(p, ':')) && col < ls) {
4343 av_strlcpy(hostname, p,
4344 FFMIN(col + 1 - p, hostname_size));
4346 *port_ptr = atoi(col + 1);
4348 av_strlcpy(hostname, p,
4349 FFMIN(ls + 1 - p, hostname_size));
4353 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4356 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4359 'C', 'D', 'E', 'F' };
4360 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4363 'c', 'd', 'e', 'f' };
4364 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4366 for (i = 0; i < s; i++) {
4367 buff[i * 2] = hex_table[src[i] >> 4];
4368 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4374 int ff_hex_to_data(uint8_t *data, const char *p)
4381 p += strspn(p, SPACE_CHARS);
4384 c = av_toupper((unsigned char) *p++);
4385 if (c >= '0' && c <= '9')
4387 else if (c >= 'A' && c <= 'F')
4402 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4403 unsigned int pts_num, unsigned int pts_den)
4406 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4407 if (new_tb.num != pts_num)
4408 av_log(NULL, AV_LOG_DEBUG,
4409 "st:%d removing common factor %d from timebase\n",
4410 s->index, pts_num / new_tb.num);
4412 av_log(NULL, AV_LOG_WARNING,
4413 "st:%d has too large timebase, reducing\n", s->index);
4415 if (new_tb.num <= 0 || new_tb.den <= 0) {
4416 av_log(NULL, AV_LOG_ERROR,
4417 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4418 new_tb.num, new_tb.den,
4422 s->time_base = new_tb;
4423 #if FF_API_LAVF_AVCTX
4424 FF_DISABLE_DEPRECATION_WARNINGS
4425 av_codec_set_pkt_timebase(s->codec, new_tb);
4426 FF_ENABLE_DEPRECATION_WARNINGS
4428 av_codec_set_pkt_timebase(s->internal->avctx, new_tb);
4429 s->pts_wrap_bits = pts_wrap_bits;
4432 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4435 const char *ptr = str;
4437 /* Parse key=value pairs. */
4440 char *dest = NULL, *dest_end;
4441 int key_len, dest_len = 0;
4443 /* Skip whitespace and potential commas. */
4444 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4451 if (!(ptr = strchr(key, '=')))
4454 key_len = ptr - key;
4456 callback_get_buf(context, key, key_len, &dest, &dest_len);
4457 dest_end = dest + dest_len - 1;
4461 while (*ptr && *ptr != '\"') {
4465 if (dest && dest < dest_end)
4469 if (dest && dest < dest_end)
4477 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4478 if (dest && dest < dest_end)
4486 int ff_find_stream_index(AVFormatContext *s, int id)
4489 for (i = 0; i < s->nb_streams; i++)
4490 if (s->streams[i]->id == id)
4495 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4499 unsigned int codec_tag;
4500 if (ofmt->query_codec)
4501 return ofmt->query_codec(codec_id, std_compliance);
4502 else if (ofmt->codec_tag)
4503 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4504 else if (codec_id == ofmt->video_codec ||
4505 codec_id == ofmt->audio_codec ||
4506 codec_id == ofmt->subtitle_codec)
4509 return AVERROR_PATCHWELCOME;
4512 int avformat_network_init(void)
4516 ff_network_inited_globally = 1;
4517 if ((ret = ff_network_init()) < 0)
4519 if ((ret = ff_tls_init()) < 0)
4525 int avformat_network_deinit(void)
4530 ff_network_inited_globally = 0;
4535 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4536 uint64_t channel_layout, int32_t sample_rate,
4537 int32_t width, int32_t height)
4543 return AVERROR(EINVAL);
4546 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4548 if (channel_layout) {
4550 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4554 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4556 if (width || height) {
4558 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4560 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4562 return AVERROR(ENOMEM);
4563 bytestream_put_le32(&data, flags);
4565 bytestream_put_le32(&data, channels);
4567 bytestream_put_le64(&data, channel_layout);
4569 bytestream_put_le32(&data, sample_rate);
4570 if (width || height) {
4571 bytestream_put_le32(&data, width);
4572 bytestream_put_le32(&data, height);
4577 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4579 AVRational undef = {0, 1};
4580 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4581 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4582 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4584 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4585 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4586 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4587 stream_sample_aspect_ratio = undef;
4589 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4590 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4591 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4592 frame_sample_aspect_ratio = undef;
4594 if (stream_sample_aspect_ratio.num)
4595 return stream_sample_aspect_ratio;
4597 return frame_sample_aspect_ratio;
4600 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4602 AVRational fr = st->r_frame_rate;
4603 AVRational codec_fr = st->internal->avctx->framerate;
4604 AVRational avg_fr = st->avg_frame_rate;
4606 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4607 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4612 if (st->internal->avctx->ticks_per_frame > 1) {
4613 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4614 (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))
4621 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4624 if (*spec <= '9' && *spec >= '0') /* opt:index */
4625 return strtol(spec, NULL, 0) == st->index;
4626 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4627 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
4628 enum AVMediaType type;
4632 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4633 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4634 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4635 case 'd': type = AVMEDIA_TYPE_DATA; break;
4636 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4637 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
4638 default: av_assert0(0);
4640 #if FF_API_LAVF_AVCTX
4641 FF_DISABLE_DEPRECATION_WARNINGS
4642 if (type != st->codecpar->codec_type
4643 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
4645 FF_ENABLE_DEPRECATION_WARNINGS
4647 if (type != st->codecpar->codec_type)
4650 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
4652 if (*spec++ == ':') { /* possibly followed by :index */
4653 int i, index = strtol(spec, NULL, 0);
4654 for (i = 0; i < s->nb_streams; i++) {
4655 #if FF_API_LAVF_AVCTX
4656 FF_DISABLE_DEPRECATION_WARNINGS
4657 if ((s->streams[i]->codecpar->codec_type == type
4658 || s->streams[i]->codec->codec_type == type
4660 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4662 return i == st->index;
4663 FF_ENABLE_DEPRECATION_WARNINGS
4665 if ((s->streams[i]->codecpar->codec_type == type) &&
4666 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4668 return i == st->index;
4674 } else if (*spec == 'p' && *(spec + 1) == ':') {
4678 prog_id = strtol(spec, &endptr, 0);
4679 for (i = 0; i < s->nb_programs; i++) {
4680 if (s->programs[i]->id != prog_id)
4683 if (*endptr++ == ':') {
4684 int stream_idx = strtol(endptr, NULL, 0);
4685 return stream_idx >= 0 &&
4686 stream_idx < s->programs[i]->nb_stream_indexes &&
4687 st->index == s->programs[i]->stream_index[stream_idx];
4690 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4691 if (st->index == s->programs[i]->stream_index[j])
4695 } else if (*spec == '#' ||
4696 (*spec == 'i' && *(spec + 1) == ':')) {
4699 spec += 1 + (*spec == 'i');
4700 stream_id = strtol(spec, &endptr, 0);
4702 return stream_id == st->id;
4703 } else if (*spec == 'm' && *(spec + 1) == ':') {
4704 AVDictionaryEntry *tag;
4709 val = strchr(spec, ':');
4711 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
4713 return AVERROR(ENOMEM);
4715 tag = av_dict_get(st->metadata, key, NULL, 0);
4717 if (!val || !strcmp(tag->value, val + 1))
4726 } else if (*spec == 'u') {
4727 AVCodecParameters *par = st->codecpar;
4728 #if FF_API_LAVF_AVCTX
4729 FF_DISABLE_DEPRECATION_WARNINGS
4730 AVCodecContext *codec = st->codec;
4731 FF_ENABLE_DEPRECATION_WARNINGS
4734 switch (par->codec_type) {
4735 case AVMEDIA_TYPE_AUDIO:
4736 val = par->sample_rate && par->channels;
4737 #if FF_API_LAVF_AVCTX
4738 val = val || (codec->sample_rate && codec->channels);
4740 if (par->format == AV_SAMPLE_FMT_NONE
4741 #if FF_API_LAVF_AVCTX
4742 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
4747 case AVMEDIA_TYPE_VIDEO:
4748 val = par->width && par->height;
4749 #if FF_API_LAVF_AVCTX
4750 val = val || (codec->width && codec->height);
4752 if (par->format == AV_PIX_FMT_NONE
4753 #if FF_API_LAVF_AVCTX
4754 && codec->pix_fmt == AV_PIX_FMT_NONE
4759 case AVMEDIA_TYPE_UNKNOWN:
4766 #if FF_API_LAVF_AVCTX
4767 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
4769 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
4771 } else if (!*spec) /* empty specifier, matches everything */
4774 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4775 return AVERROR(EINVAL);
4778 int ff_generate_avci_extradata(AVStream *st)
4780 static const uint8_t avci100_1080p_extradata[] = {
4782 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4783 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4784 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4785 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4786 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4787 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4788 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4789 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4790 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4792 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4795 static const uint8_t avci100_1080i_extradata[] = {
4797 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4798 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4799 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4800 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4801 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4802 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4803 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4804 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4805 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4806 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4807 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
4809 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4812 static const uint8_t avci50_1080p_extradata[] = {
4814 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4815 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4816 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4817 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4818 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4819 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4820 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4821 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4822 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4824 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4827 static const uint8_t avci50_1080i_extradata[] = {
4829 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4830 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4831 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4832 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4833 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4834 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4835 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4836 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4837 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4838 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4839 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4841 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4844 static const uint8_t avci100_720p_extradata[] = {
4846 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4847 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4848 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4849 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4850 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4851 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4852 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4853 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4854 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4855 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4857 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4860 static const uint8_t avci50_720p_extradata[] = {
4862 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4863 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4864 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4865 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4866 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4867 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4868 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4869 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4870 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4872 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4876 const uint8_t *data = NULL;
4879 if (st->codecpar->width == 1920) {
4880 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
4881 data = avci100_1080p_extradata;
4882 size = sizeof(avci100_1080p_extradata);
4884 data = avci100_1080i_extradata;
4885 size = sizeof(avci100_1080i_extradata);
4887 } else if (st->codecpar->width == 1440) {
4888 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
4889 data = avci50_1080p_extradata;
4890 size = sizeof(avci50_1080p_extradata);
4892 data = avci50_1080i_extradata;
4893 size = sizeof(avci50_1080i_extradata);
4895 } else if (st->codecpar->width == 1280) {
4896 data = avci100_720p_extradata;
4897 size = sizeof(avci100_720p_extradata);
4898 } else if (st->codecpar->width == 960) {
4899 data = avci50_720p_extradata;
4900 size = sizeof(avci50_720p_extradata);
4906 av_freep(&st->codecpar->extradata);
4907 if (ff_alloc_extradata(st->codecpar, size))
4908 return AVERROR(ENOMEM);
4909 memcpy(st->codecpar->extradata, data, size);
4914 uint8_t *av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type,
4919 for (i = 0; i < st->nb_side_data; i++) {
4920 if (st->side_data[i].type == type) {
4922 *size = st->side_data[i].size;
4923 return st->side_data[i].data;
4929 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
4932 AVPacketSideData *sd, *tmp;
4934 uint8_t *data = av_malloc(size);
4939 for (i = 0; i < st->nb_side_data; i++) {
4940 sd = &st->side_data[i];
4942 if (sd->type == type) {
4943 av_freep(&sd->data);
4950 tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
4956 st->side_data = tmp;
4959 sd = &st->side_data[st->nb_side_data - 1];
4966 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
4968 AVBitStreamFilterContext *bsfc = NULL;
4969 AVBitStreamFilterContext **dest = &st->internal->bsfc;
4970 while (*dest && (*dest)->next)
4971 dest = &(*dest)->next;
4973 if (!(bsfc = av_bitstream_filter_init(name))) {
4974 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
4975 return AVERROR(EINVAL);
4977 if (args && !(bsfc->args = av_strdup(args))) {
4978 av_bitstream_filter_close(bsfc);
4979 return AVERROR(ENOMEM);
4981 av_log(NULL, AV_LOG_VERBOSE,
4982 "Automatically inserted bitstream filter '%s'; args='%s'\n",
4983 name, args ? args : "");
4988 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
4989 AVBitStreamFilterContext *bsfc)
4993 AVPacket new_pkt = *pkt;
4994 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
4995 &new_pkt.data, &new_pkt.size,
4996 pkt->data, pkt->size,
4997 pkt->flags & AV_PKT_FLAG_KEY);
4998 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
4999 av_packet_unref(pkt);
5000 memset(pkt, 0, sizeof(*pkt));
5003 if(a == 0 && new_pkt.data != pkt->data) {
5004 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
5006 memcpy(t, new_pkt.data, new_pkt.size);
5007 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5012 a = AVERROR(ENOMEM);
5016 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5017 av_buffer_default_free, NULL, 0);
5019 pkt->side_data = NULL;
5020 pkt->side_data_elems = 0;
5021 av_packet_unref(pkt);
5023 av_freep(&new_pkt.data);
5024 a = AVERROR(ENOMEM);
5028 av_log(codec, AV_LOG_ERROR,
5029 "Failed to open bitstream filter %s for stream %d with codec %s",
5030 bsfc->filter->name, pkt->stream_index,
5031 codec->codec ? codec->codec->name : "copy");
5042 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5045 s->io_close(s, *pb);
5049 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5051 AVDictionaryEntry *entry;
5052 int64_t parsed_timestamp;
5054 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5055 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5056 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5059 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5066 int ff_standardize_creation_time(AVFormatContext *s)
5069 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5071 time_t seconds = timestamp / 1000000;
5072 struct tm *ptm, tmbuf;
5073 ptm = gmtime_r(&seconds, &tmbuf);
5076 if (!strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", ptm))
5077 return AVERROR_EXTERNAL;
5078 av_strlcatf(buf, sizeof(buf), ".%06dZ", (int)(timestamp % 1000000));
5079 av_dict_set(&s->metadata, "creation_time", buf, 0);
5081 return AVERROR_EXTERNAL;
5087 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5092 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5094 if (size != AVPALETTE_SIZE) {
5095 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5096 return AVERROR_INVALIDDATA;
5098 memcpy(palette, side_data, AVPALETTE_SIZE);
5102 if (ret == CONTAINS_PAL) {
5104 for (i = 0; i < AVPALETTE_COUNT; i++)
5105 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5112 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5117 ret = av_bprint_finalize(buf, &str);
5120 if (!av_bprint_is_complete(buf)) {
5122 return AVERROR(ENOMEM);
5125 par->extradata = str;
5126 /* Note: the string is NUL terminated (so extradata can be read as a
5127 * string), but the ending character is not accounted in the size (in
5128 * binary formats you are likely not supposed to mux that character). When
5129 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5131 par->extradata_size = buf->len;