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 && start_time1 <= INT64_MAX - end_time1) {
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 > 0) {
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, "stream %d: start_time: %0.3f duration: %0.3f\n", i,
2777 (double) st->start_time * av_q2d(st->time_base),
2778 (double) st->duration * av_q2d(st->time_base));
2780 av_log(ic, AV_LOG_TRACE,
2781 "format: 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)
2958 if (bps <= 0 || bps > 64)
2959 return AV_CODEC_ID_NONE;
2964 return be ? AV_CODEC_ID_PCM_F32BE : AV_CODEC_ID_PCM_F32LE;
2966 return be ? AV_CODEC_ID_PCM_F64BE : AV_CODEC_ID_PCM_F64LE;
2968 return AV_CODEC_ID_NONE;
2973 if (sflags & (1 << (bps - 1))) {
2976 return AV_CODEC_ID_PCM_S8;
2978 return be ? AV_CODEC_ID_PCM_S16BE : AV_CODEC_ID_PCM_S16LE;
2980 return be ? AV_CODEC_ID_PCM_S24BE : AV_CODEC_ID_PCM_S24LE;
2982 return be ? AV_CODEC_ID_PCM_S32BE : AV_CODEC_ID_PCM_S32LE;
2984 return AV_CODEC_ID_NONE;
2989 return AV_CODEC_ID_PCM_U8;
2991 return be ? AV_CODEC_ID_PCM_U16BE : AV_CODEC_ID_PCM_U16LE;
2993 return be ? AV_CODEC_ID_PCM_U24BE : AV_CODEC_ID_PCM_U24LE;
2995 return be ? AV_CODEC_ID_PCM_U32BE : AV_CODEC_ID_PCM_U32LE;
2997 return AV_CODEC_ID_NONE;
3003 unsigned int av_codec_get_tag(const AVCodecTag *const *tags, enum AVCodecID id)
3006 if (!av_codec_get_tag2(tags, id, &tag))
3011 int av_codec_get_tag2(const AVCodecTag * const *tags, enum AVCodecID id,
3015 for (i = 0; tags && tags[i]; i++) {
3016 const AVCodecTag *codec_tags = tags[i];
3017 while (codec_tags->id != AV_CODEC_ID_NONE) {
3018 if (codec_tags->id == id) {
3019 *tag = codec_tags->tag;
3028 enum AVCodecID av_codec_get_id(const AVCodecTag *const *tags, unsigned int tag)
3031 for (i = 0; tags && tags[i]; i++) {
3032 enum AVCodecID id = ff_codec_get_id(tags[i], tag);
3033 if (id != AV_CODEC_ID_NONE)
3036 return AV_CODEC_ID_NONE;
3039 static void compute_chapters_end(AVFormatContext *s)
3042 int64_t max_time = 0;
3044 if (s->duration > 0 && s->start_time < INT64_MAX - s->duration)
3045 max_time = s->duration +
3046 ((s->start_time == AV_NOPTS_VALUE) ? 0 : s->start_time);
3048 for (i = 0; i < s->nb_chapters; i++)
3049 if (s->chapters[i]->end == AV_NOPTS_VALUE) {
3050 AVChapter *ch = s->chapters[i];
3051 int64_t end = max_time ? av_rescale_q(max_time, AV_TIME_BASE_Q,
3055 for (j = 0; j < s->nb_chapters; j++) {
3056 AVChapter *ch1 = s->chapters[j];
3057 int64_t next_start = av_rescale_q(ch1->start, ch1->time_base,
3059 if (j != i && next_start > ch->start && next_start < end)
3062 ch->end = (end == INT64_MAX) ? ch->start : end;
3066 static int get_std_framerate(int i)
3069 return (i + 1) * 1001;
3073 return (i + 31) * 1001 * 12;
3077 return ((const int[]) { 80, 120, 240})[i] * 1001 * 12;
3081 return ((const int[]) { 24, 30, 60, 12, 15, 48 })[i] * 1000 * 12;
3084 /* Is the time base unreliable?
3085 * This is a heuristic to balance between quick acceptance of the values in
3086 * the headers vs. some extra checks.
3087 * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
3088 * MPEG-2 commonly misuses field repeat flags to store different framerates.
3089 * And there are "variable" fps files this needs to detect as well. */
3090 static int tb_unreliable(AVCodecContext *c)
3092 if (c->time_base.den >= 101LL * c->time_base.num ||
3093 c->time_base.den < 5LL * c->time_base.num ||
3094 // c->codec_tag == AV_RL32("DIVX") ||
3095 // c->codec_tag == AV_RL32("XVID") ||
3096 c->codec_tag == AV_RL32("mp4v") ||
3097 c->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
3098 c->codec_id == AV_CODEC_ID_GIF ||
3099 c->codec_id == AV_CODEC_ID_HEVC ||
3100 c->codec_id == AV_CODEC_ID_H264)
3105 int ff_alloc_extradata(AVCodecParameters *par, int size)
3109 if (size < 0 || size >= INT32_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
3110 par->extradata = NULL;
3111 par->extradata_size = 0;
3112 return AVERROR(EINVAL);
3114 par->extradata = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
3115 if (par->extradata) {
3116 memset(par->extradata + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
3117 par->extradata_size = size;
3120 par->extradata_size = 0;
3121 ret = AVERROR(ENOMEM);
3126 int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
3128 int ret = ff_alloc_extradata(par, size);
3131 ret = avio_read(pb, par->extradata, size);
3133 av_freep(&par->extradata);
3134 par->extradata_size = 0;
3135 av_log(s, AV_LOG_ERROR, "Failed to read extradata of size %d\n", size);
3136 return ret < 0 ? ret : AVERROR_INVALIDDATA;
3142 int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
3145 int64_t last = st->info->last_dts;
3147 if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
3148 && ts - (uint64_t)last < INT64_MAX) {
3149 double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
3150 int64_t duration = ts - last;
3152 if (!st->info->duration_error)
3153 st->info->duration_error = av_mallocz(sizeof(st->info->duration_error[0])*2);
3154 if (!st->info->duration_error)
3155 return AVERROR(ENOMEM);
3157 // if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
3158 // av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
3159 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3160 if (st->info->duration_error[0][1][i] < 1e10) {
3161 int framerate = get_std_framerate(i);
3162 double sdts = dts*framerate/(1001*12);
3163 for (j= 0; j<2; j++) {
3164 int64_t ticks = llrint(sdts+j*0.5);
3165 double error= sdts - ticks + j*0.5;
3166 st->info->duration_error[j][0][i] += error;
3167 st->info->duration_error[j][1][i] += error*error;
3171 st->info->duration_count++;
3172 st->info->rfps_duration_sum += duration;
3174 if (st->info->duration_count % 10 == 0) {
3175 int n = st->info->duration_count;
3176 for (i = 0; i<MAX_STD_TIMEBASES; i++) {
3177 if (st->info->duration_error[0][1][i] < 1e10) {
3178 double a0 = st->info->duration_error[0][0][i] / n;
3179 double error0 = st->info->duration_error[0][1][i] / n - a0*a0;
3180 double a1 = st->info->duration_error[1][0][i] / n;
3181 double error1 = st->info->duration_error[1][1][i] / n - a1*a1;
3182 if (error0 > 0.04 && error1 > 0.04) {
3183 st->info->duration_error[0][1][i] = 2e10;
3184 st->info->duration_error[1][1][i] = 2e10;
3190 // ignore the first 4 values, they might have some random jitter
3191 if (st->info->duration_count > 3 && is_relative(ts) == is_relative(last))
3192 st->info->duration_gcd = av_gcd(st->info->duration_gcd, duration);
3194 if (ts != AV_NOPTS_VALUE)
3195 st->info->last_dts = ts;
3200 void ff_rfps_calculate(AVFormatContext *ic)
3204 for (i = 0; i < ic->nb_streams; i++) {
3205 AVStream *st = ic->streams[i];
3207 if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
3209 // the check for tb_unreliable() is not completely correct, since this is not about handling
3210 // an unreliable/inexact time base, but a time base that is finer than necessary, as e.g.
3211 // ipmovie.c produces.
3212 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)
3213 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);
3214 if (st->info->duration_count>1 && !st->r_frame_rate.num
3215 && tb_unreliable(st->internal->avctx)) {
3217 double best_error= 0.01;
3218 AVRational ref_rate = st->r_frame_rate.num ? st->r_frame_rate : av_inv_q(st->time_base);
3220 for (j= 0; j<MAX_STD_TIMEBASES; j++) {
3223 if (st->info->codec_info_duration &&
3224 st->info->codec_info_duration*av_q2d(st->time_base) < (1001*11.5)/get_std_framerate(j))
3226 if (!st->info->codec_info_duration && get_std_framerate(j) < 1001*12)
3229 if (av_q2d(st->time_base) * st->info->rfps_duration_sum / st->info->duration_count < (1001*12.0 * 0.8)/get_std_framerate(j))
3232 for (k= 0; k<2; k++) {
3233 int n = st->info->duration_count;
3234 double a= st->info->duration_error[k][0][j] / n;
3235 double error= st->info->duration_error[k][1][j]/n - a*a;
3237 if (error < best_error && best_error> 0.000000001) {
3239 num = get_std_framerate(j);
3242 av_log(ic, AV_LOG_DEBUG, "rfps: %f %f\n", get_std_framerate(j) / 12.0/1001, error);
3245 // do not increase frame rate by more than 1 % in order to match a standard rate.
3246 if (num && (!ref_rate.num || (double)num/(12*1001) < 1.01 * av_q2d(ref_rate)))
3247 av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, num, 12*1001, INT_MAX);
3249 if ( !st->avg_frame_rate.num
3250 && st->r_frame_rate.num && st->info->rfps_duration_sum
3251 && st->info->codec_info_duration <= 0
3252 && st->info->duration_count > 2
3253 && 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
3255 av_log(ic, AV_LOG_DEBUG, "Setting avg frame rate based on r frame rate\n");
3256 st->avg_frame_rate = st->r_frame_rate;
3259 av_freep(&st->info->duration_error);
3260 st->info->last_dts = AV_NOPTS_VALUE;
3261 st->info->duration_count = 0;
3262 st->info->rfps_duration_sum = 0;
3266 int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
3268 int i, count = 0, ret = 0, j;
3271 AVCodecContext *avctx;
3272 AVPacket pkt1, *pkt;
3273 int64_t old_offset = avio_tell(ic->pb);
3274 // new streams might appear, no options for those
3275 int orig_nb_streams = ic->nb_streams;
3277 int64_t max_analyze_duration = ic->max_analyze_duration;
3278 int64_t max_stream_analyze_duration;
3279 int64_t max_subtitle_analyze_duration;
3280 int64_t probesize = ic->probesize;
3281 int eof_reached = 0;
3283 flush_codecs = probesize > 0;
3285 av_opt_set(ic, "skip_clear", "1", AV_OPT_SEARCH_CHILDREN);
3287 max_stream_analyze_duration = max_analyze_duration;
3288 max_subtitle_analyze_duration = max_analyze_duration;
3289 if (!max_analyze_duration) {
3290 max_stream_analyze_duration =
3291 max_analyze_duration = 5*AV_TIME_BASE;
3292 max_subtitle_analyze_duration = 30*AV_TIME_BASE;
3293 if (!strcmp(ic->iformat->name, "flv"))
3294 max_stream_analyze_duration = 90*AV_TIME_BASE;
3295 if (!strcmp(ic->iformat->name, "mpeg") || !strcmp(ic->iformat->name, "mpegts"))
3296 max_stream_analyze_duration = 7*AV_TIME_BASE;
3300 av_log(ic, AV_LOG_DEBUG, "Before avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d nb_streams:%d\n",
3301 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, ic->nb_streams);
3303 for (i = 0; i < ic->nb_streams; i++) {
3304 const AVCodec *codec;
3305 AVDictionary *thread_opt = NULL;
3306 st = ic->streams[i];
3307 avctx = st->internal->avctx;
3309 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3310 st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
3311 /* if (!st->time_base.num)
3313 if (!avctx->time_base.num)
3314 avctx->time_base = st->time_base;
3316 // only for the split stuff
3317 if (!st->parser && !(ic->flags & AVFMT_FLAG_NOPARSE) && st->request_probe <= 0) {
3318 st->parser = av_parser_init(st->codecpar->codec_id);
3320 if (st->need_parsing == AVSTREAM_PARSE_HEADERS) {
3321 st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
3322 } else if (st->need_parsing == AVSTREAM_PARSE_FULL_RAW) {
3323 st->parser->flags |= PARSER_FLAG_USE_CODEC_TS;
3325 } else if (st->need_parsing) {
3326 av_log(ic, AV_LOG_VERBOSE, "parser not found for codec "
3327 "%s, packets or times may be invalid.\n",
3328 avcodec_get_name(st->codecpar->codec_id));
3332 /* check if the caller has overridden the codec id */
3333 #if FF_API_LAVF_AVCTX
3334 FF_DISABLE_DEPRECATION_WARNINGS
3335 if (st->codec->codec_id != st->internal->orig_codec_id) {
3336 st->codecpar->codec_id = st->codec->codec_id;
3337 st->codecpar->codec_type = st->codec->codec_type;
3338 st->internal->orig_codec_id = st->codec->codec_id;
3340 FF_ENABLE_DEPRECATION_WARNINGS
3342 if (st->codecpar->codec_id != st->internal->orig_codec_id)
3343 st->internal->orig_codec_id = st->codecpar->codec_id;
3345 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3347 goto find_stream_info_err;
3348 if (st->request_probe <= 0)
3349 st->internal->avctx_inited = 1;
3351 codec = find_decoder(ic, st, st->codecpar->codec_id);
3353 /* Force thread count to 1 since the H.264 decoder will not extract
3354 * SPS and PPS to extradata during multi-threaded decoding. */
3355 av_dict_set(options ? &options[i] : &thread_opt, "threads", "1", 0);
3357 if (ic->codec_whitelist)
3358 av_dict_set(options ? &options[i] : &thread_opt, "codec_whitelist", ic->codec_whitelist, 0);
3360 /* Ensure that subtitle_header is properly set. */
3361 if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE
3362 && codec && !avctx->codec) {
3363 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3364 av_log(ic, AV_LOG_WARNING,
3365 "Failed to open codec in av_find_stream_info\n");
3368 // Try to just open decoders, in case this is enough to get parameters.
3369 if (!has_codec_parameters(st, NULL) && st->request_probe <= 0) {
3370 if (codec && !avctx->codec)
3371 if (avcodec_open2(avctx, codec, options ? &options[i] : &thread_opt) < 0)
3372 av_log(ic, AV_LOG_WARNING,
3373 "Failed to open codec in av_find_stream_info\n");
3376 av_dict_free(&thread_opt);
3379 for (i = 0; i < ic->nb_streams; i++) {
3380 #if FF_API_R_FRAME_RATE
3381 ic->streams[i]->info->last_dts = AV_NOPTS_VALUE;
3383 ic->streams[i]->info->fps_first_dts = AV_NOPTS_VALUE;
3384 ic->streams[i]->info->fps_last_dts = AV_NOPTS_VALUE;
3389 int analyzed_all_streams;
3390 if (ff_check_interrupt(&ic->interrupt_callback)) {
3392 av_log(ic, AV_LOG_DEBUG, "interrupted\n");
3396 /* check if one codec still needs to be handled */
3397 for (i = 0; i < ic->nb_streams; i++) {
3398 int fps_analyze_framecount = 20;
3400 st = ic->streams[i];
3401 if (!has_codec_parameters(st, NULL))
3403 /* If the timebase is coarse (like the usual millisecond precision
3404 * of mkv), we need to analyze more frames to reliably arrive at
3405 * the correct fps. */
3406 if (av_q2d(st->time_base) > 0.0005)
3407 fps_analyze_framecount *= 2;
3408 if (!tb_unreliable(st->internal->avctx))
3409 fps_analyze_framecount = 0;
3410 if (ic->fps_probe_size >= 0)
3411 fps_analyze_framecount = ic->fps_probe_size;
3412 if (st->disposition & AV_DISPOSITION_ATTACHED_PIC)
3413 fps_analyze_framecount = 0;
3414 /* variable fps and no guess at the real fps */
3415 if (!(st->r_frame_rate.num && st->avg_frame_rate.num) &&
3416 st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
3417 int count = (ic->iformat->flags & AVFMT_NOTIMESTAMPS) ?
3418 st->info->codec_info_duration_fields/2 :
3419 st->info->duration_count;
3420 if (count < fps_analyze_framecount)
3423 if (st->parser && st->parser->parser->split &&
3424 !st->codecpar->extradata)
3426 if (st->first_dts == AV_NOPTS_VALUE &&
3427 !(ic->iformat->flags & AVFMT_NOTIMESTAMPS) &&
3428 st->codec_info_nb_frames < ((st->disposition & AV_DISPOSITION_ATTACHED_PIC) ? 1 : ic->max_ts_probe) &&
3429 (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
3430 st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO))
3433 analyzed_all_streams = 0;
3434 if (i == ic->nb_streams) {
3435 analyzed_all_streams = 1;
3436 /* NOTE: If the format has no header, then we need to read some
3437 * packets to get most of the streams, so we cannot stop here. */
3438 if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
3439 /* If we found the info for all the codecs, we can stop. */
3441 av_log(ic, AV_LOG_DEBUG, "All info found\n");
3446 /* We did not get all the codec info, but we read too much data. */
3447 if (read_size >= probesize) {
3449 av_log(ic, AV_LOG_DEBUG,
3450 "Probe buffer size limit of %"PRId64" bytes reached\n", probesize);
3451 for (i = 0; i < ic->nb_streams; i++)
3452 if (!ic->streams[i]->r_frame_rate.num &&
3453 ic->streams[i]->info->duration_count <= 1 &&
3454 ic->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
3455 strcmp(ic->iformat->name, "image2"))
3456 av_log(ic, AV_LOG_WARNING,
3457 "Stream #%d: not enough frames to estimate rate; "
3458 "consider increasing probesize\n", i);
3462 /* NOTE: A new stream can be added there if no header in file
3463 * (AVFMTCTX_NOHEADER). */
3464 ret = read_frame_internal(ic, &pkt1);
3465 if (ret == AVERROR(EAGAIN))
3476 if (!(ic->flags & AVFMT_FLAG_NOBUFFER)) {
3477 ret = add_to_pktbuf(&ic->internal->packet_buffer, pkt,
3478 &ic->internal->packet_buffer_end, 0);
3480 goto find_stream_info_err;
3483 st = ic->streams[pkt->stream_index];
3484 if (!(st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3485 read_size += pkt->size;
3487 avctx = st->internal->avctx;
3488 if (!st->internal->avctx_inited) {
3489 ret = avcodec_parameters_to_context(avctx, st->codecpar);
3491 goto find_stream_info_err;
3492 st->internal->avctx_inited = 1;
3495 if (pkt->dts != AV_NOPTS_VALUE && st->codec_info_nb_frames > 1) {
3496 /* check for non-increasing dts */
3497 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3498 st->info->fps_last_dts >= pkt->dts) {
3499 av_log(ic, AV_LOG_DEBUG,
3500 "Non-increasing DTS in stream %d: packet %d with DTS "
3501 "%"PRId64", packet %d with DTS %"PRId64"\n",
3502 st->index, st->info->fps_last_dts_idx,
3503 st->info->fps_last_dts, st->codec_info_nb_frames,
3505 st->info->fps_first_dts =
3506 st->info->fps_last_dts = AV_NOPTS_VALUE;
3508 /* Check for a discontinuity in dts. If the difference in dts
3509 * is more than 1000 times the average packet duration in the
3510 * sequence, we treat it as a discontinuity. */
3511 if (st->info->fps_last_dts != AV_NOPTS_VALUE &&
3512 st->info->fps_last_dts_idx > st->info->fps_first_dts_idx &&
3513 (pkt->dts - st->info->fps_last_dts) / 1000 >
3514 (st->info->fps_last_dts - st->info->fps_first_dts) /
3515 (st->info->fps_last_dts_idx - st->info->fps_first_dts_idx)) {
3516 av_log(ic, AV_LOG_WARNING,
3517 "DTS discontinuity in stream %d: packet %d with DTS "
3518 "%"PRId64", packet %d with DTS %"PRId64"\n",
3519 st->index, st->info->fps_last_dts_idx,
3520 st->info->fps_last_dts, st->codec_info_nb_frames,
3522 st->info->fps_first_dts =
3523 st->info->fps_last_dts = AV_NOPTS_VALUE;
3526 /* update stored dts values */
3527 if (st->info->fps_first_dts == AV_NOPTS_VALUE) {
3528 st->info->fps_first_dts = pkt->dts;
3529 st->info->fps_first_dts_idx = st->codec_info_nb_frames;
3531 st->info->fps_last_dts = pkt->dts;
3532 st->info->fps_last_dts_idx = st->codec_info_nb_frames;
3534 if (st->codec_info_nb_frames>1) {
3538 if (st->time_base.den > 0)
3539 t = av_rescale_q(st->info->codec_info_duration, st->time_base, AV_TIME_BASE_Q);
3540 if (st->avg_frame_rate.num > 0)
3541 t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
3544 && st->codec_info_nb_frames>30
3545 && st->info->fps_first_dts != AV_NOPTS_VALUE
3546 && st->info->fps_last_dts != AV_NOPTS_VALUE)
3547 t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
3549 if (analyzed_all_streams) limit = max_analyze_duration;
3550 else if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) limit = max_subtitle_analyze_duration;
3551 else limit = max_stream_analyze_duration;
3554 av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %"PRId64" reached at %"PRId64" microseconds st:%d\n",
3556 t, pkt->stream_index);
3557 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3558 av_packet_unref(pkt);
3561 if (pkt->duration) {
3562 if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && pkt->pts >= st->start_time) {
3563 st->info->codec_info_duration = FFMIN(pkt->pts - st->start_time, st->info->codec_info_duration + pkt->duration);
3565 st->info->codec_info_duration += pkt->duration;
3566 st->info->codec_info_duration_fields += st->parser && st->need_parsing && avctx->ticks_per_frame ==2 ? st->parser->repeat_pict + 1 : 2;
3569 #if FF_API_R_FRAME_RATE
3570 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
3571 ff_rfps_add_frame(ic, st, pkt->dts);
3573 if (st->parser && st->parser->parser->split && !avctx->extradata) {
3574 int i = st->parser->parser->split(avctx, pkt->data, pkt->size);
3575 if (i > 0 && i < FF_MAX_EXTRADATA_SIZE) {
3576 avctx->extradata_size = i;
3577 avctx->extradata = av_mallocz(avctx->extradata_size +
3578 AV_INPUT_BUFFER_PADDING_SIZE);
3579 if (!avctx->extradata)
3580 return AVERROR(ENOMEM);
3581 memcpy(avctx->extradata, pkt->data,
3582 avctx->extradata_size);
3586 /* If still no information, we try to open the codec and to
3587 * decompress the frame. We try to avoid that in most cases as
3588 * it takes longer and uses more memory. For MPEG-4, we need to
3589 * decompress for QuickTime.
3591 * If AV_CODEC_CAP_CHANNEL_CONF is set this will force decoding of at
3592 * least one frame of codec data, this makes sure the codec initializes
3593 * the channel configuration and does not only trust the values from
3595 try_decode_frame(ic, st, pkt,
3596 (options && i < orig_nb_streams) ? &options[i] : NULL);
3598 if (ic->flags & AVFMT_FLAG_NOBUFFER)
3599 av_packet_unref(pkt);
3601 st->codec_info_nb_frames++;
3607 for (stream_index = 0; stream_index < ic->nb_streams; stream_index++) {
3608 st = ic->streams[stream_index];
3609 avctx = st->internal->avctx;
3610 if (!has_codec_parameters(st, NULL)) {
3611 AVCodec *codec = find_decoder(ic, st, st->codecpar->codec_id);
3612 if (codec && !avctx->codec) {
3613 if (avcodec_open2(avctx, codec, (options && stream_index < orig_nb_streams) ? &options[stream_index] : NULL) < 0)
3614 av_log(ic, AV_LOG_WARNING,
3615 "Failed to open codec in av_find_stream_info\n");
3619 // EOF already reached while reading the stream above.
3620 // So continue with reoordering DTS with whatever delay we have.
3621 if (ic->internal->packet_buffer && !has_decode_delay_been_guessed(st)) {
3622 update_dts_from_pts(ic, stream_index, ic->internal->packet_buffer);
3628 AVPacket empty_pkt = { 0 };
3630 av_init_packet(&empty_pkt);
3632 for (i = 0; i < ic->nb_streams; i++) {
3634 st = ic->streams[i];
3636 /* flush the decoders */
3637 if (st->info->found_decoder == 1) {
3639 err = try_decode_frame(ic, st, &empty_pkt,
3640 (options && i < orig_nb_streams)
3641 ? &options[i] : NULL);
3642 } while (err > 0 && !has_codec_parameters(st, NULL));
3645 av_log(ic, AV_LOG_INFO,
3646 "decoding for stream %d failed\n", st->index);
3652 // close codecs which were opened in try_decode_frame()
3653 for (i = 0; i < ic->nb_streams; i++) {
3654 st = ic->streams[i];
3655 avcodec_close(st->internal->avctx);
3658 ff_rfps_calculate(ic);
3660 for (i = 0; i < ic->nb_streams; i++) {
3661 st = ic->streams[i];
3662 avctx = st->internal->avctx;
3663 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
3664 if (avctx->codec_id == AV_CODEC_ID_RAWVIDEO && !avctx->codec_tag && !avctx->bits_per_coded_sample) {
3665 uint32_t tag= avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
3666 if (avpriv_find_pix_fmt(avpriv_get_raw_pix_fmt_tags(), tag) == avctx->pix_fmt)
3667 avctx->codec_tag= tag;
3670 /* estimate average framerate if not set by demuxer */
3671 if (st->info->codec_info_duration_fields &&
3672 !st->avg_frame_rate.num &&
3673 st->info->codec_info_duration) {
3675 double best_error = 0.01;
3677 if (st->info->codec_info_duration >= INT64_MAX / st->time_base.num / 2||
3678 st->info->codec_info_duration_fields >= INT64_MAX / st->time_base.den ||
3679 st->info->codec_info_duration < 0)
3681 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3682 st->info->codec_info_duration_fields * (int64_t) st->time_base.den,
3683 st->info->codec_info_duration * 2 * (int64_t) st->time_base.num, 60000);
3685 /* Round guessed framerate to a "standard" framerate if it's
3686 * within 1% of the original estimate. */
3687 for (j = 0; j < MAX_STD_TIMEBASES; j++) {
3688 AVRational std_fps = { get_std_framerate(j), 12 * 1001 };
3689 double error = fabs(av_q2d(st->avg_frame_rate) /
3690 av_q2d(std_fps) - 1);
3692 if (error < best_error) {
3694 best_fps = std_fps.num;
3698 av_reduce(&st->avg_frame_rate.num, &st->avg_frame_rate.den,
3699 best_fps, 12 * 1001, INT_MAX);
3702 if (!st->r_frame_rate.num) {
3703 if ( avctx->time_base.den * (int64_t) st->time_base.num
3704 <= avctx->time_base.num * avctx->ticks_per_frame * (int64_t) st->time_base.den) {
3705 st->r_frame_rate.num = avctx->time_base.den;
3706 st->r_frame_rate.den = avctx->time_base.num * avctx->ticks_per_frame;
3708 st->r_frame_rate.num = st->time_base.den;
3709 st->r_frame_rate.den = st->time_base.num;
3712 if (st->display_aspect_ratio.num && st->display_aspect_ratio.den) {
3713 AVRational hw_ratio = { avctx->height, avctx->width };
3714 st->sample_aspect_ratio = av_mul_q(st->display_aspect_ratio,
3717 } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
3718 if (!avctx->bits_per_coded_sample)
3719 avctx->bits_per_coded_sample =
3720 av_get_bits_per_sample(avctx->codec_id);
3721 // set stream disposition based on audio service type
3722 switch (avctx->audio_service_type) {
3723 case AV_AUDIO_SERVICE_TYPE_EFFECTS:
3724 st->disposition = AV_DISPOSITION_CLEAN_EFFECTS;
3726 case AV_AUDIO_SERVICE_TYPE_VISUALLY_IMPAIRED:
3727 st->disposition = AV_DISPOSITION_VISUAL_IMPAIRED;
3729 case AV_AUDIO_SERVICE_TYPE_HEARING_IMPAIRED:
3730 st->disposition = AV_DISPOSITION_HEARING_IMPAIRED;
3732 case AV_AUDIO_SERVICE_TYPE_COMMENTARY:
3733 st->disposition = AV_DISPOSITION_COMMENT;
3735 case AV_AUDIO_SERVICE_TYPE_KARAOKE:
3736 st->disposition = AV_DISPOSITION_KARAOKE;
3743 estimate_timings(ic, old_offset);
3745 av_opt_set(ic, "skip_clear", "0", AV_OPT_SEARCH_CHILDREN);
3747 if (ret >= 0 && ic->nb_streams)
3748 /* We could not have all the codec parameters before EOF. */
3750 for (i = 0; i < ic->nb_streams; i++) {
3752 st = ic->streams[i];
3754 /* if no packet was ever seen, update context now for has_codec_parameters */
3755 if (!st->internal->avctx_inited) {
3756 if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
3757 st->codecpar->format == AV_SAMPLE_FMT_NONE)
3758 st->codecpar->format = st->internal->avctx->sample_fmt;
3759 ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
3761 goto find_stream_info_err;
3763 if (!has_codec_parameters(st, &errmsg)) {
3765 avcodec_string(buf, sizeof(buf), st->internal->avctx, 0);
3766 av_log(ic, AV_LOG_WARNING,
3767 "Could not find codec parameters for stream %d (%s): %s\n"
3768 "Consider increasing the value for the 'analyzeduration' and 'probesize' options\n",
3775 compute_chapters_end(ic);
3777 /* update the stream parameters from the internal codec contexts */
3778 for (i = 0; i < ic->nb_streams; i++) {
3779 st = ic->streams[i];
3781 if (st->internal->avctx_inited) {
3782 int orig_w = st->codecpar->width;
3783 int orig_h = st->codecpar->height;
3784 ret = avcodec_parameters_from_context(st->codecpar, st->internal->avctx);
3786 goto find_stream_info_err;
3787 // The decoder might reduce the video size by the lowres factor.
3788 if (av_codec_get_lowres(st->internal->avctx) && orig_w) {
3789 st->codecpar->width = orig_w;
3790 st->codecpar->height = orig_h;
3794 #if FF_API_LAVF_AVCTX
3795 FF_DISABLE_DEPRECATION_WARNINGS
3796 ret = avcodec_parameters_to_context(st->codec, st->codecpar);
3798 goto find_stream_info_err;
3800 // The old API (AVStream.codec) "requires" the resolution to be adjusted
3801 // by the lowres factor.
3802 if (av_codec_get_lowres(st->internal->avctx) && st->internal->avctx->width) {
3803 av_codec_set_lowres(st->codec, av_codec_get_lowres(st->internal->avctx));
3804 st->codec->width = st->internal->avctx->width;
3805 st->codec->height = st->internal->avctx->height;
3808 if (st->codec->codec_tag != MKTAG('t','m','c','d'))
3809 st->codec->time_base = st->internal->avctx->time_base;
3810 st->codec->framerate = st->avg_frame_rate;
3812 if (st->internal->avctx->subtitle_header) {
3813 st->codec->subtitle_header = av_malloc(st->internal->avctx->subtitle_header_size);
3814 if (!st->codec->subtitle_header)
3815 goto find_stream_info_err;
3816 st->codec->subtitle_header_size = st->internal->avctx->subtitle_header_size;
3817 memcpy(st->codec->subtitle_header, st->internal->avctx->subtitle_header,
3818 st->codec->subtitle_header_size);
3821 // Fields unavailable in AVCodecParameters
3822 st->codec->coded_width = st->internal->avctx->coded_width;
3823 st->codec->coded_height = st->internal->avctx->coded_height;
3824 st->codec->properties = st->internal->avctx->properties;
3825 FF_ENABLE_DEPRECATION_WARNINGS
3828 st->internal->avctx_inited = 0;
3831 find_stream_info_err:
3832 for (i = 0; i < ic->nb_streams; i++) {
3833 st = ic->streams[i];
3835 av_freep(&st->info->duration_error);
3836 av_freep(&ic->streams[i]->info);
3839 av_log(ic, AV_LOG_DEBUG, "After avformat_find_stream_info() pos: %"PRId64" bytes read:%"PRId64" seeks:%d frames:%d\n",
3840 avio_tell(ic->pb), ic->pb->bytes_read, ic->pb->seek_count, count);
3844 AVProgram *av_find_program_from_stream(AVFormatContext *ic, AVProgram *last, int s)
3848 for (i = 0; i < ic->nb_programs; i++) {
3849 if (ic->programs[i] == last) {
3853 for (j = 0; j < ic->programs[i]->nb_stream_indexes; j++)
3854 if (ic->programs[i]->stream_index[j] == s)
3855 return ic->programs[i];
3861 int av_find_best_stream(AVFormatContext *ic, enum AVMediaType type,
3862 int wanted_stream_nb, int related_stream,
3863 AVCodec **decoder_ret, int flags)
3865 int i, nb_streams = ic->nb_streams;
3866 int ret = AVERROR_STREAM_NOT_FOUND, best_count = -1, best_bitrate = -1, best_multiframe = -1, count, bitrate, multiframe;
3867 unsigned *program = NULL;
3868 const AVCodec *decoder = NULL, *best_decoder = NULL;
3870 if (related_stream >= 0 && wanted_stream_nb < 0) {
3871 AVProgram *p = av_find_program_from_stream(ic, NULL, related_stream);
3873 program = p->stream_index;
3874 nb_streams = p->nb_stream_indexes;
3877 for (i = 0; i < nb_streams; i++) {
3878 int real_stream_index = program ? program[i] : i;
3879 AVStream *st = ic->streams[real_stream_index];
3880 AVCodecParameters *par = st->codecpar;
3881 if (par->codec_type != type)
3883 if (wanted_stream_nb >= 0 && real_stream_index != wanted_stream_nb)
3885 if (wanted_stream_nb != real_stream_index &&
3886 st->disposition & (AV_DISPOSITION_HEARING_IMPAIRED |
3887 AV_DISPOSITION_VISUAL_IMPAIRED))
3889 if (type == AVMEDIA_TYPE_AUDIO && !(par->channels && par->sample_rate))
3892 decoder = find_decoder(ic, st, par->codec_id);
3895 ret = AVERROR_DECODER_NOT_FOUND;
3899 count = st->codec_info_nb_frames;
3900 bitrate = par->bit_rate;
3901 multiframe = FFMIN(5, count);
3902 if ((best_multiframe > multiframe) ||
3903 (best_multiframe == multiframe && best_bitrate > bitrate) ||
3904 (best_multiframe == multiframe && best_bitrate == bitrate && best_count >= count))
3907 best_bitrate = bitrate;
3908 best_multiframe = multiframe;
3909 ret = real_stream_index;
3910 best_decoder = decoder;
3911 if (program && i == nb_streams - 1 && ret < 0) {
3913 nb_streams = ic->nb_streams;
3914 /* no related stream found, try again with everything */
3919 *decoder_ret = (AVCodec*)best_decoder;
3923 /*******************************************************/
3925 int av_read_play(AVFormatContext *s)
3927 if (s->iformat->read_play)
3928 return s->iformat->read_play(s);
3930 return avio_pause(s->pb, 0);
3931 return AVERROR(ENOSYS);
3934 int av_read_pause(AVFormatContext *s)
3936 if (s->iformat->read_pause)
3937 return s->iformat->read_pause(s);
3939 return avio_pause(s->pb, 1);
3940 return AVERROR(ENOSYS);
3943 static void free_stream(AVStream **pst)
3945 AVStream *st = *pst;
3951 for (i = 0; i < st->nb_side_data; i++)
3952 av_freep(&st->side_data[i].data);
3953 av_freep(&st->side_data);
3956 av_parser_close(st->parser);
3958 if (st->attached_pic.data)
3959 av_packet_unref(&st->attached_pic);
3962 avcodec_free_context(&st->internal->avctx);
3964 av_freep(&st->internal);
3966 av_dict_free(&st->metadata);
3967 avcodec_parameters_free(&st->codecpar);
3968 av_freep(&st->probe_data.buf);
3969 av_freep(&st->index_entries);
3970 #if FF_API_LAVF_AVCTX
3971 FF_DISABLE_DEPRECATION_WARNINGS
3972 av_freep(&st->codec->extradata);
3973 av_freep(&st->codec->subtitle_header);
3974 av_freep(&st->codec);
3975 FF_ENABLE_DEPRECATION_WARNINGS
3977 av_freep(&st->priv_data);
3979 av_freep(&st->info->duration_error);
3980 av_freep(&st->info);
3981 av_freep(&st->recommended_encoder_configuration);
3982 av_freep(&st->priv_pts);
3987 void ff_free_stream(AVFormatContext *s, AVStream *st)
3989 av_assert0(s->nb_streams>0);
3990 av_assert0(s->streams[ s->nb_streams - 1 ] == st);
3992 free_stream(&s->streams[ --s->nb_streams ]);
3995 void avformat_free_context(AVFormatContext *s)
4003 if (s->iformat && s->iformat->priv_class && s->priv_data)
4004 av_opt_free(s->priv_data);
4005 if (s->oformat && s->oformat->priv_class && s->priv_data)
4006 av_opt_free(s->priv_data);
4008 for (i = s->nb_streams - 1; i >= 0; i--)
4009 ff_free_stream(s, s->streams[i]);
4012 for (i = s->nb_programs - 1; i >= 0; i--) {
4013 av_dict_free(&s->programs[i]->metadata);
4014 av_freep(&s->programs[i]->stream_index);
4015 av_freep(&s->programs[i]);
4017 av_freep(&s->programs);
4018 av_freep(&s->priv_data);
4019 while (s->nb_chapters--) {
4020 av_dict_free(&s->chapters[s->nb_chapters]->metadata);
4021 av_freep(&s->chapters[s->nb_chapters]);
4023 av_freep(&s->chapters);
4024 av_dict_free(&s->metadata);
4025 av_freep(&s->streams);
4026 av_freep(&s->internal);
4027 flush_packet_queue(s);
4031 void avformat_close_input(AVFormatContext **ps)
4042 if ((s->iformat && strcmp(s->iformat->name, "image2") && s->iformat->flags & AVFMT_NOFILE) ||
4043 (s->flags & AVFMT_FLAG_CUSTOM_IO))
4046 flush_packet_queue(s);
4049 if (s->iformat->read_close)
4050 s->iformat->read_close(s);
4052 avformat_free_context(s);
4059 AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
4065 if (s->nb_streams >= INT_MAX/sizeof(*streams))
4067 streams = av_realloc_array(s->streams, s->nb_streams + 1, sizeof(*streams));
4070 s->streams = streams;
4072 st = av_mallocz(sizeof(AVStream));
4075 if (!(st->info = av_mallocz(sizeof(*st->info)))) {
4079 st->info->last_dts = AV_NOPTS_VALUE;
4081 #if FF_API_LAVF_AVCTX
4082 FF_DISABLE_DEPRECATION_WARNINGS
4083 st->codec = avcodec_alloc_context3(c);
4089 FF_ENABLE_DEPRECATION_WARNINGS
4092 st->internal = av_mallocz(sizeof(*st->internal));
4096 st->codecpar = avcodec_parameters_alloc();
4100 st->internal->avctx = avcodec_alloc_context3(NULL);
4101 if (!st->internal->avctx)
4105 #if FF_API_LAVF_AVCTX
4106 FF_DISABLE_DEPRECATION_WARNINGS
4107 /* no default bitrate if decoding */
4108 st->codec->bit_rate = 0;
4109 FF_ENABLE_DEPRECATION_WARNINGS
4112 /* default pts setting is MPEG-like */
4113 avpriv_set_pts_info(st, 33, 1, 90000);
4114 /* we set the current DTS to 0 so that formats without any timestamps
4115 * but durations get some timestamps, formats with some unknown
4116 * timestamps have their first few packets buffered and the
4117 * timestamps corrected before they are returned to the user */
4118 st->cur_dts = RELATIVE_TS_BASE;
4120 st->cur_dts = AV_NOPTS_VALUE;
4123 st->index = s->nb_streams;
4124 st->start_time = AV_NOPTS_VALUE;
4125 st->duration = AV_NOPTS_VALUE;
4126 st->first_dts = AV_NOPTS_VALUE;
4127 st->probe_packets = MAX_PROBE_PACKETS;
4128 st->pts_wrap_reference = AV_NOPTS_VALUE;
4129 st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4131 st->last_IP_pts = AV_NOPTS_VALUE;
4132 st->last_dts_for_order_check = AV_NOPTS_VALUE;
4133 for (i = 0; i < MAX_REORDER_DELAY + 1; i++)
4134 st->pts_buffer[i] = AV_NOPTS_VALUE;
4136 st->sample_aspect_ratio = (AVRational) { 0, 1 };
4138 #if FF_API_R_FRAME_RATE
4139 st->info->last_dts = AV_NOPTS_VALUE;
4141 st->info->fps_first_dts = AV_NOPTS_VALUE;
4142 st->info->fps_last_dts = AV_NOPTS_VALUE;
4144 st->inject_global_side_data = s->internal->inject_global_side_data;
4146 st->internal->need_context_update = 1;
4148 s->streams[s->nb_streams++] = st;
4155 AVProgram *av_new_program(AVFormatContext *ac, int id)
4157 AVProgram *program = NULL;
4160 av_log(ac, AV_LOG_TRACE, "new_program: id=0x%04x\n", id);
4162 for (i = 0; i < ac->nb_programs; i++)
4163 if (ac->programs[i]->id == id)
4164 program = ac->programs[i];
4167 program = av_mallocz(sizeof(AVProgram));
4170 dynarray_add(&ac->programs, &ac->nb_programs, program);
4171 program->discard = AVDISCARD_NONE;
4174 program->pts_wrap_reference = AV_NOPTS_VALUE;
4175 program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
4177 program->start_time =
4178 program->end_time = AV_NOPTS_VALUE;
4183 AVChapter *avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base,
4184 int64_t start, int64_t end, const char *title)
4186 AVChapter *chapter = NULL;
4189 if (end != AV_NOPTS_VALUE && start > end) {
4190 av_log(s, AV_LOG_ERROR, "Chapter end time %"PRId64" before start %"PRId64"\n", end, start);
4194 for (i = 0; i < s->nb_chapters; i++)
4195 if (s->chapters[i]->id == id)
4196 chapter = s->chapters[i];
4199 chapter = av_mallocz(sizeof(AVChapter));
4202 dynarray_add(&s->chapters, &s->nb_chapters, chapter);
4204 av_dict_set(&chapter->metadata, "title", title, 0);
4206 chapter->time_base = time_base;
4207 chapter->start = start;
4213 void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned idx)
4216 AVProgram *program = NULL;
4219 if (idx >= ac->nb_streams) {
4220 av_log(ac, AV_LOG_ERROR, "stream index %d is not valid\n", idx);
4224 for (i = 0; i < ac->nb_programs; i++) {
4225 if (ac->programs[i]->id != progid)
4227 program = ac->programs[i];
4228 for (j = 0; j < program->nb_stream_indexes; j++)
4229 if (program->stream_index[j] == idx)
4232 tmp = av_realloc_array(program->stream_index, program->nb_stream_indexes+1, sizeof(unsigned int));
4235 program->stream_index = tmp;
4236 program->stream_index[program->nb_stream_indexes++] = idx;
4241 uint64_t ff_ntp_time(void)
4243 return (av_gettime() / 1000) * 1000 + NTP_OFFSET_US;
4246 int av_get_frame_filename(char *buf, int buf_size, const char *path, int number)
4249 char *q, buf1[20], c;
4250 int nd, len, percentd_found;
4262 while (av_isdigit(*p))
4263 nd = nd * 10 + *p++ - '0';
4265 } while (av_isdigit(c));
4276 snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
4278 if ((q - buf + len) > buf_size - 1)
4280 memcpy(q, buf1, len);
4288 if ((q - buf) < buf_size - 1)
4292 if (!percentd_found)
4301 void av_url_split(char *proto, int proto_size,
4302 char *authorization, int authorization_size,
4303 char *hostname, int hostname_size,
4304 int *port_ptr, char *path, int path_size, const char *url)
4306 const char *p, *ls, *ls2, *at, *at2, *col, *brk;
4312 if (authorization_size > 0)
4313 authorization[0] = 0;
4314 if (hostname_size > 0)
4319 /* parse protocol */
4320 if ((p = strchr(url, ':'))) {
4321 av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
4328 /* no protocol means plain filename */
4329 av_strlcpy(path, url, path_size);
4333 /* separate path from hostname */
4334 ls = strchr(p, '/');
4335 ls2 = strchr(p, '?');
4339 ls = FFMIN(ls, ls2);
4341 av_strlcpy(path, ls, path_size);
4343 ls = &p[strlen(p)]; // XXX
4345 /* the rest is hostname, use that to parse auth/port */
4347 /* authorization (user[:pass]@hostname) */
4349 while ((at = strchr(p, '@')) && at < ls) {
4350 av_strlcpy(authorization, at2,
4351 FFMIN(authorization_size, at + 1 - at2));
4352 p = at + 1; /* skip '@' */
4355 if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
4357 av_strlcpy(hostname, p + 1,
4358 FFMIN(hostname_size, brk - p));
4359 if (brk[1] == ':' && port_ptr)
4360 *port_ptr = atoi(brk + 2);
4361 } else if ((col = strchr(p, ':')) && col < ls) {
4362 av_strlcpy(hostname, p,
4363 FFMIN(col + 1 - p, hostname_size));
4365 *port_ptr = atoi(col + 1);
4367 av_strlcpy(hostname, p,
4368 FFMIN(ls + 1 - p, hostname_size));
4372 char *ff_data_to_hex(char *buff, const uint8_t *src, int s, int lowercase)
4375 static const char hex_table_uc[16] = { '0', '1', '2', '3',
4378 'C', 'D', 'E', 'F' };
4379 static const char hex_table_lc[16] = { '0', '1', '2', '3',
4382 'c', 'd', 'e', 'f' };
4383 const char *hex_table = lowercase ? hex_table_lc : hex_table_uc;
4385 for (i = 0; i < s; i++) {
4386 buff[i * 2] = hex_table[src[i] >> 4];
4387 buff[i * 2 + 1] = hex_table[src[i] & 0xF];
4393 int ff_hex_to_data(uint8_t *data, const char *p)
4400 p += strspn(p, SPACE_CHARS);
4403 c = av_toupper((unsigned char) *p++);
4404 if (c >= '0' && c <= '9')
4406 else if (c >= 'A' && c <= 'F')
4421 void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits,
4422 unsigned int pts_num, unsigned int pts_den)
4425 if (av_reduce(&new_tb.num, &new_tb.den, pts_num, pts_den, INT_MAX)) {
4426 if (new_tb.num != pts_num)
4427 av_log(NULL, AV_LOG_DEBUG,
4428 "st:%d removing common factor %d from timebase\n",
4429 s->index, pts_num / new_tb.num);
4431 av_log(NULL, AV_LOG_WARNING,
4432 "st:%d has too large timebase, reducing\n", s->index);
4434 if (new_tb.num <= 0 || new_tb.den <= 0) {
4435 av_log(NULL, AV_LOG_ERROR,
4436 "Ignoring attempt to set invalid timebase %d/%d for st:%d\n",
4437 new_tb.num, new_tb.den,
4441 s->time_base = new_tb;
4442 #if FF_API_LAVF_AVCTX
4443 FF_DISABLE_DEPRECATION_WARNINGS
4444 av_codec_set_pkt_timebase(s->codec, new_tb);
4445 FF_ENABLE_DEPRECATION_WARNINGS
4447 av_codec_set_pkt_timebase(s->internal->avctx, new_tb);
4448 s->pts_wrap_bits = pts_wrap_bits;
4451 void ff_parse_key_value(const char *str, ff_parse_key_val_cb callback_get_buf,
4454 const char *ptr = str;
4456 /* Parse key=value pairs. */
4459 char *dest = NULL, *dest_end;
4460 int key_len, dest_len = 0;
4462 /* Skip whitespace and potential commas. */
4463 while (*ptr && (av_isspace(*ptr) || *ptr == ','))
4470 if (!(ptr = strchr(key, '=')))
4473 key_len = ptr - key;
4475 callback_get_buf(context, key, key_len, &dest, &dest_len);
4476 dest_end = dest + dest_len - 1;
4480 while (*ptr && *ptr != '\"') {
4484 if (dest && dest < dest_end)
4488 if (dest && dest < dest_end)
4496 for (; *ptr && !(av_isspace(*ptr) || *ptr == ','); ptr++)
4497 if (dest && dest < dest_end)
4505 int ff_find_stream_index(AVFormatContext *s, int id)
4508 for (i = 0; i < s->nb_streams; i++)
4509 if (s->streams[i]->id == id)
4514 int avformat_query_codec(const AVOutputFormat *ofmt, enum AVCodecID codec_id,
4518 unsigned int codec_tag;
4519 if (ofmt->query_codec)
4520 return ofmt->query_codec(codec_id, std_compliance);
4521 else if (ofmt->codec_tag)
4522 return !!av_codec_get_tag2(ofmt->codec_tag, codec_id, &codec_tag);
4523 else if (codec_id == ofmt->video_codec ||
4524 codec_id == ofmt->audio_codec ||
4525 codec_id == ofmt->subtitle_codec)
4528 return AVERROR_PATCHWELCOME;
4531 int avformat_network_init(void)
4535 ff_network_inited_globally = 1;
4536 if ((ret = ff_network_init()) < 0)
4538 if ((ret = ff_tls_init()) < 0)
4544 int avformat_network_deinit(void)
4549 ff_network_inited_globally = 0;
4554 int ff_add_param_change(AVPacket *pkt, int32_t channels,
4555 uint64_t channel_layout, int32_t sample_rate,
4556 int32_t width, int32_t height)
4562 return AVERROR(EINVAL);
4565 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT;
4567 if (channel_layout) {
4569 flags |= AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT;
4573 flags |= AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE;
4575 if (width || height) {
4577 flags |= AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS;
4579 data = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, size);
4581 return AVERROR(ENOMEM);
4582 bytestream_put_le32(&data, flags);
4584 bytestream_put_le32(&data, channels);
4586 bytestream_put_le64(&data, channel_layout);
4588 bytestream_put_le32(&data, sample_rate);
4589 if (width || height) {
4590 bytestream_put_le32(&data, width);
4591 bytestream_put_le32(&data, height);
4596 AVRational av_guess_sample_aspect_ratio(AVFormatContext *format, AVStream *stream, AVFrame *frame)
4598 AVRational undef = {0, 1};
4599 AVRational stream_sample_aspect_ratio = stream ? stream->sample_aspect_ratio : undef;
4600 AVRational codec_sample_aspect_ratio = stream && stream->codecpar ? stream->codecpar->sample_aspect_ratio : undef;
4601 AVRational frame_sample_aspect_ratio = frame ? frame->sample_aspect_ratio : codec_sample_aspect_ratio;
4603 av_reduce(&stream_sample_aspect_ratio.num, &stream_sample_aspect_ratio.den,
4604 stream_sample_aspect_ratio.num, stream_sample_aspect_ratio.den, INT_MAX);
4605 if (stream_sample_aspect_ratio.num <= 0 || stream_sample_aspect_ratio.den <= 0)
4606 stream_sample_aspect_ratio = undef;
4608 av_reduce(&frame_sample_aspect_ratio.num, &frame_sample_aspect_ratio.den,
4609 frame_sample_aspect_ratio.num, frame_sample_aspect_ratio.den, INT_MAX);
4610 if (frame_sample_aspect_ratio.num <= 0 || frame_sample_aspect_ratio.den <= 0)
4611 frame_sample_aspect_ratio = undef;
4613 if (stream_sample_aspect_ratio.num)
4614 return stream_sample_aspect_ratio;
4616 return frame_sample_aspect_ratio;
4619 AVRational av_guess_frame_rate(AVFormatContext *format, AVStream *st, AVFrame *frame)
4621 AVRational fr = st->r_frame_rate;
4622 AVRational codec_fr = st->internal->avctx->framerate;
4623 AVRational avg_fr = st->avg_frame_rate;
4625 if (avg_fr.num > 0 && avg_fr.den > 0 && fr.num > 0 && fr.den > 0 &&
4626 av_q2d(avg_fr) < 70 && av_q2d(fr) > 210) {
4631 if (st->internal->avctx->ticks_per_frame > 1) {
4632 if ( codec_fr.num > 0 && codec_fr.den > 0 &&
4633 (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))
4640 int avformat_match_stream_specifier(AVFormatContext *s, AVStream *st,
4643 if (*spec <= '9' && *spec >= '0') /* opt:index */
4644 return strtol(spec, NULL, 0) == st->index;
4645 else if (*spec == 'v' || *spec == 'a' || *spec == 's' || *spec == 'd' ||
4646 *spec == 't' || *spec == 'V') { /* opt:[vasdtV] */
4647 enum AVMediaType type;
4651 case 'v': type = AVMEDIA_TYPE_VIDEO; break;
4652 case 'a': type = AVMEDIA_TYPE_AUDIO; break;
4653 case 's': type = AVMEDIA_TYPE_SUBTITLE; break;
4654 case 'd': type = AVMEDIA_TYPE_DATA; break;
4655 case 't': type = AVMEDIA_TYPE_ATTACHMENT; break;
4656 case 'V': type = AVMEDIA_TYPE_VIDEO; nopic = 1; break;
4657 default: av_assert0(0);
4659 #if FF_API_LAVF_AVCTX
4660 FF_DISABLE_DEPRECATION_WARNINGS
4661 if (type != st->codecpar->codec_type
4662 && (st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN || st->codec->codec_type != type))
4664 FF_ENABLE_DEPRECATION_WARNINGS
4666 if (type != st->codecpar->codec_type)
4669 if (nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC))
4671 if (*spec++ == ':') { /* possibly followed by :index */
4672 int i, index = strtol(spec, NULL, 0);
4673 for (i = 0; i < s->nb_streams; i++) {
4674 #if FF_API_LAVF_AVCTX
4675 FF_DISABLE_DEPRECATION_WARNINGS
4676 if ((s->streams[i]->codecpar->codec_type == type
4677 || s->streams[i]->codec->codec_type == type
4679 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4681 return i == st->index;
4682 FF_ENABLE_DEPRECATION_WARNINGS
4684 if ((s->streams[i]->codecpar->codec_type == type) &&
4685 !(nopic && (st->disposition & AV_DISPOSITION_ATTACHED_PIC)) &&
4687 return i == st->index;
4693 } else if (*spec == 'p' && *(spec + 1) == ':') {
4697 prog_id = strtol(spec, &endptr, 0);
4698 for (i = 0; i < s->nb_programs; i++) {
4699 if (s->programs[i]->id != prog_id)
4702 if (*endptr++ == ':') {
4703 int stream_idx = strtol(endptr, NULL, 0);
4704 return stream_idx >= 0 &&
4705 stream_idx < s->programs[i]->nb_stream_indexes &&
4706 st->index == s->programs[i]->stream_index[stream_idx];
4709 for (j = 0; j < s->programs[i]->nb_stream_indexes; j++)
4710 if (st->index == s->programs[i]->stream_index[j])
4714 } else if (*spec == '#' ||
4715 (*spec == 'i' && *(spec + 1) == ':')) {
4718 spec += 1 + (*spec == 'i');
4719 stream_id = strtol(spec, &endptr, 0);
4721 return stream_id == st->id;
4722 } else if (*spec == 'm' && *(spec + 1) == ':') {
4723 AVDictionaryEntry *tag;
4728 val = strchr(spec, ':');
4730 key = val ? av_strndup(spec, val - spec) : av_strdup(spec);
4732 return AVERROR(ENOMEM);
4734 tag = av_dict_get(st->metadata, key, NULL, 0);
4736 if (!val || !strcmp(tag->value, val + 1))
4745 } else if (*spec == 'u') {
4746 AVCodecParameters *par = st->codecpar;
4747 #if FF_API_LAVF_AVCTX
4748 FF_DISABLE_DEPRECATION_WARNINGS
4749 AVCodecContext *codec = st->codec;
4750 FF_ENABLE_DEPRECATION_WARNINGS
4753 switch (par->codec_type) {
4754 case AVMEDIA_TYPE_AUDIO:
4755 val = par->sample_rate && par->channels;
4756 #if FF_API_LAVF_AVCTX
4757 val = val || (codec->sample_rate && codec->channels);
4759 if (par->format == AV_SAMPLE_FMT_NONE
4760 #if FF_API_LAVF_AVCTX
4761 && codec->sample_fmt == AV_SAMPLE_FMT_NONE
4766 case AVMEDIA_TYPE_VIDEO:
4767 val = par->width && par->height;
4768 #if FF_API_LAVF_AVCTX
4769 val = val || (codec->width && codec->height);
4771 if (par->format == AV_PIX_FMT_NONE
4772 #if FF_API_LAVF_AVCTX
4773 && codec->pix_fmt == AV_PIX_FMT_NONE
4778 case AVMEDIA_TYPE_UNKNOWN:
4785 #if FF_API_LAVF_AVCTX
4786 return (par->codec_id != AV_CODEC_ID_NONE || codec->codec_id != AV_CODEC_ID_NONE) && val != 0;
4788 return par->codec_id != AV_CODEC_ID_NONE && val != 0;
4790 } else if (!*spec) /* empty specifier, matches everything */
4793 av_log(s, AV_LOG_ERROR, "Invalid stream specifier: %s.\n", spec);
4794 return AVERROR(EINVAL);
4797 int ff_generate_avci_extradata(AVStream *st)
4799 static const uint8_t avci100_1080p_extradata[] = {
4801 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4802 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4803 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4804 0x18, 0x21, 0x02, 0x56, 0xb9, 0x3d, 0x7d, 0x7e,
4805 0x4f, 0xe3, 0x3f, 0x11, 0xf1, 0x9e, 0x08, 0xb8,
4806 0x8c, 0x54, 0x43, 0xc0, 0x78, 0x02, 0x27, 0xe2,
4807 0x70, 0x1e, 0x30, 0x10, 0x10, 0x14, 0x00, 0x00,
4808 0x03, 0x00, 0x04, 0x00, 0x00, 0x03, 0x00, 0xca,
4809 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
4811 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4814 static const uint8_t avci100_1080i_extradata[] = {
4816 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4817 0xb6, 0xd4, 0x20, 0x22, 0x33, 0x19, 0xc6, 0x63,
4818 0x23, 0x21, 0x01, 0x11, 0x98, 0xce, 0x33, 0x19,
4819 0x18, 0x21, 0x03, 0x3a, 0x46, 0x65, 0x6a, 0x65,
4820 0x24, 0xad, 0xe9, 0x12, 0x32, 0x14, 0x1a, 0x26,
4821 0x34, 0xad, 0xa4, 0x41, 0x82, 0x23, 0x01, 0x50,
4822 0x2b, 0x1a, 0x24, 0x69, 0x48, 0x30, 0x40, 0x2e,
4823 0x11, 0x12, 0x08, 0xc6, 0x8c, 0x04, 0x41, 0x28,
4824 0x4c, 0x34, 0xf0, 0x1e, 0x01, 0x13, 0xf2, 0xe0,
4825 0x3c, 0x60, 0x20, 0x20, 0x28, 0x00, 0x00, 0x03,
4826 0x00, 0x08, 0x00, 0x00, 0x03, 0x01, 0x94, 0x20,
4828 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x33, 0x48,
4831 static const uint8_t avci50_1080p_extradata[] = {
4833 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4834 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4835 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4836 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4837 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4838 0x6e, 0x6c, 0xd3, 0x3c, 0x05, 0xa0, 0x22, 0x7e,
4839 0x5f, 0xfc, 0x00, 0x0c, 0x00, 0x13, 0x8c, 0x04,
4840 0x04, 0x05, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00,
4841 0x00, 0x03, 0x00, 0x32, 0x84, 0x00, 0x00, 0x00,
4843 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4846 static const uint8_t avci50_1080i_extradata[] = {
4848 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x28,
4849 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4850 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4851 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6e, 0x61,
4852 0x87, 0x3e, 0x73, 0x4d, 0x98, 0x0c, 0x03, 0x06,
4853 0x9c, 0x0b, 0x73, 0xe6, 0xc0, 0xb5, 0x18, 0x63,
4854 0x0d, 0x39, 0xe0, 0x5b, 0x02, 0xd4, 0xc6, 0x19,
4855 0x1a, 0x79, 0x8c, 0x32, 0x34, 0x24, 0xf0, 0x16,
4856 0x81, 0x13, 0xf7, 0xff, 0x80, 0x02, 0x00, 0x01,
4857 0xf1, 0x80, 0x80, 0x80, 0xa0, 0x00, 0x00, 0x03,
4858 0x00, 0x20, 0x00, 0x00, 0x06, 0x50, 0x80, 0x00,
4860 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4863 static const uint8_t avci100_720p_extradata[] = {
4865 0x00, 0x00, 0x00, 0x01, 0x67, 0x7a, 0x10, 0x29,
4866 0xb6, 0xd4, 0x20, 0x2a, 0x33, 0x1d, 0xc7, 0x62,
4867 0xa1, 0x08, 0x40, 0x54, 0x66, 0x3b, 0x8e, 0xc5,
4868 0x42, 0x02, 0x10, 0x25, 0x64, 0x2c, 0x89, 0xe8,
4869 0x85, 0xe4, 0x21, 0x4b, 0x90, 0x83, 0x06, 0x95,
4870 0xd1, 0x06, 0x46, 0x97, 0x20, 0xc8, 0xd7, 0x43,
4871 0x08, 0x11, 0xc2, 0x1e, 0x4c, 0x91, 0x0f, 0x01,
4872 0x40, 0x16, 0xec, 0x07, 0x8c, 0x04, 0x04, 0x05,
4873 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03,
4874 0x00, 0x64, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00,
4876 0x00, 0x00, 0x00, 0x01, 0x68, 0xce, 0x31, 0x12,
4879 static const uint8_t avci50_720p_extradata[] = {
4881 0x00, 0x00, 0x00, 0x01, 0x67, 0x6e, 0x10, 0x20,
4882 0xa6, 0xd4, 0x20, 0x32, 0x33, 0x0c, 0x71, 0x18,
4883 0x88, 0x62, 0x10, 0x19, 0x19, 0x86, 0x38, 0x8c,
4884 0x44, 0x30, 0x21, 0x02, 0x56, 0x4e, 0x6f, 0x37,
4885 0xcd, 0xf9, 0xbf, 0x81, 0x6b, 0xf3, 0x7c, 0xde,
4886 0x6e, 0x6c, 0xd3, 0x3c, 0x0f, 0x01, 0x6e, 0xff,
4887 0xc0, 0x00, 0xc0, 0x01, 0x38, 0xc0, 0x40, 0x40,
4888 0x50, 0x00, 0x00, 0x03, 0x00, 0x10, 0x00, 0x00,
4889 0x06, 0x48, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00,
4891 0x00, 0x00, 0x00, 0x01, 0x68, 0xee, 0x31, 0x12,
4895 const uint8_t *data = NULL;
4898 if (st->codecpar->width == 1920) {
4899 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
4900 data = avci100_1080p_extradata;
4901 size = sizeof(avci100_1080p_extradata);
4903 data = avci100_1080i_extradata;
4904 size = sizeof(avci100_1080i_extradata);
4906 } else if (st->codecpar->width == 1440) {
4907 if (st->codecpar->field_order == AV_FIELD_PROGRESSIVE) {
4908 data = avci50_1080p_extradata;
4909 size = sizeof(avci50_1080p_extradata);
4911 data = avci50_1080i_extradata;
4912 size = sizeof(avci50_1080i_extradata);
4914 } else if (st->codecpar->width == 1280) {
4915 data = avci100_720p_extradata;
4916 size = sizeof(avci100_720p_extradata);
4917 } else if (st->codecpar->width == 960) {
4918 data = avci50_720p_extradata;
4919 size = sizeof(avci50_720p_extradata);
4925 av_freep(&st->codecpar->extradata);
4926 if (ff_alloc_extradata(st->codecpar, size))
4927 return AVERROR(ENOMEM);
4928 memcpy(st->codecpar->extradata, data, size);
4933 uint8_t *av_stream_get_side_data(AVStream *st, enum AVPacketSideDataType type,
4938 for (i = 0; i < st->nb_side_data; i++) {
4939 if (st->side_data[i].type == type) {
4941 *size = st->side_data[i].size;
4942 return st->side_data[i].data;
4948 uint8_t *av_stream_new_side_data(AVStream *st, enum AVPacketSideDataType type,
4951 AVPacketSideData *sd, *tmp;
4953 uint8_t *data = av_malloc(size);
4958 for (i = 0; i < st->nb_side_data; i++) {
4959 sd = &st->side_data[i];
4961 if (sd->type == type) {
4962 av_freep(&sd->data);
4969 tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
4975 st->side_data = tmp;
4978 sd = &st->side_data[st->nb_side_data - 1];
4985 int ff_stream_add_bitstream_filter(AVStream *st, const char *name, const char *args)
4987 AVBitStreamFilterContext *bsfc = NULL;
4988 AVBitStreamFilterContext **dest = &st->internal->bsfc;
4989 while (*dest && (*dest)->next)
4990 dest = &(*dest)->next;
4992 if (!(bsfc = av_bitstream_filter_init(name))) {
4993 av_log(NULL, AV_LOG_ERROR, "Unknown bitstream filter '%s'\n", name);
4994 return AVERROR(EINVAL);
4996 if (args && !(bsfc->args = av_strdup(args))) {
4997 av_bitstream_filter_close(bsfc);
4998 return AVERROR(ENOMEM);
5000 av_log(NULL, AV_LOG_VERBOSE,
5001 "Automatically inserted bitstream filter '%s'; args='%s'\n",
5002 name, args ? args : "");
5007 int av_apply_bitstream_filters(AVCodecContext *codec, AVPacket *pkt,
5008 AVBitStreamFilterContext *bsfc)
5012 AVPacket new_pkt = *pkt;
5013 int a = av_bitstream_filter_filter(bsfc, codec, NULL,
5014 &new_pkt.data, &new_pkt.size,
5015 pkt->data, pkt->size,
5016 pkt->flags & AV_PKT_FLAG_KEY);
5017 if (a == 0 && new_pkt.size == 0 && new_pkt.side_data_elems == 0) {
5018 av_packet_unref(pkt);
5019 memset(pkt, 0, sizeof(*pkt));
5022 if(a == 0 && new_pkt.data != pkt->data) {
5023 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
5025 memcpy(t, new_pkt.data, new_pkt.size);
5026 memset(t + new_pkt.size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
5031 a = AVERROR(ENOMEM);
5035 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
5036 av_buffer_default_free, NULL, 0);
5038 pkt->side_data = NULL;
5039 pkt->side_data_elems = 0;
5040 av_packet_unref(pkt);
5042 av_freep(&new_pkt.data);
5043 a = AVERROR(ENOMEM);
5047 av_log(codec, AV_LOG_ERROR,
5048 "Failed to open bitstream filter %s for stream %d with codec %s",
5049 bsfc->filter->name, pkt->stream_index,
5050 codec->codec ? codec->codec->name : "copy");
5061 void ff_format_io_close(AVFormatContext *s, AVIOContext **pb)
5064 s->io_close(s, *pb);
5068 int ff_parse_creation_time_metadata(AVFormatContext *s, int64_t *timestamp, int return_seconds)
5070 AVDictionaryEntry *entry;
5071 int64_t parsed_timestamp;
5073 if ((entry = av_dict_get(s->metadata, "creation_time", NULL, 0))) {
5074 if ((ret = av_parse_time(&parsed_timestamp, entry->value, 0)) >= 0) {
5075 *timestamp = return_seconds ? parsed_timestamp / 1000000 : parsed_timestamp;
5078 av_log(s, AV_LOG_WARNING, "Failed to parse creation_time %s\n", entry->value);
5085 int ff_standardize_creation_time(AVFormatContext *s)
5088 int ret = ff_parse_creation_time_metadata(s, ×tamp, 0);
5090 time_t seconds = timestamp / 1000000;
5091 struct tm *ptm, tmbuf;
5092 ptm = gmtime_r(&seconds, &tmbuf);
5095 if (!strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S", ptm))
5096 return AVERROR_EXTERNAL;
5097 av_strlcatf(buf, sizeof(buf), ".%06dZ", (int)(timestamp % 1000000));
5098 av_dict_set(&s->metadata, "creation_time", buf, 0);
5100 return AVERROR_EXTERNAL;
5106 int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
5111 side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PALETTE, &size);
5113 if (size != AVPALETTE_SIZE) {
5114 av_log(s, AV_LOG_ERROR, "Invalid palette side data\n");
5115 return AVERROR_INVALIDDATA;
5117 memcpy(palette, side_data, AVPALETTE_SIZE);
5121 if (ret == CONTAINS_PAL) {
5123 for (i = 0; i < AVPALETTE_COUNT; i++)
5124 palette[i] = AV_RL32(pkt->data + pkt->size - AVPALETTE_SIZE + i*4);
5131 int ff_bprint_to_codecpar_extradata(AVCodecParameters *par, struct AVBPrint *buf)
5136 ret = av_bprint_finalize(buf, &str);
5139 if (!av_bprint_is_complete(buf)) {
5141 return AVERROR(ENOMEM);
5144 par->extradata = str;
5145 /* Note: the string is NUL terminated (so extradata can be read as a
5146 * string), but the ending character is not accounted in the size (in
5147 * binary formats you are likely not supposed to mux that character). When
5148 * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
5150 par->extradata_size = buf->len;