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lavf: add AVFormatContext.max_ts_probe

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It allows to configure how long will avformat_find_stream_info() wait
to get the first timestamp.
This commit is contained in:
Anton Khirnov 2014-08-19 17:49:58 +00:00
parent 6ca11f7157
commit b263f8ffe7
5 changed files with 12 additions and 1 deletions
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3
doc/APIchanges
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@ -13,6 +13,9 @@ libavutil: 2014-08-09
API changes, most recent first:
2014-08-xx - xxxxxxx - lavf 56.03.0 - avformat.h
Add AVFormatContext.max_ts_probe.
2014-08-13 - 8ddc326 - lavu 54.03.0 - mem.h
Add av_strndup().

6
libavformat/avformat.h
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@ -1192,6 +1192,12 @@ typedef struct AVFormatContext {
int event_flags;
#define AVFMT_EVENT_FLAG_METADATA_UPDATED 0x0001 ///< The call resulted in updated metadata.
/**
* Maximum number of packets to read while waiting for the first timestamp.
* Decoding only.
*/
int max_ts_probe;
/*****************************************************************
* All fields below this line are not part of the public API. They
* may not be used outside of libavformat and can be changed and

1
libavformat/options_table.h
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@ -65,6 +65,7 @@ static const AVOption avformat_options[] = {
{"strict", "strictly conform to all the things in the spec no matter what the consequences", 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_STRICT }, INT_MIN, INT_MAX, D|E, "strict"},
{"normal", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_NORMAL }, INT_MIN, INT_MAX, D|E, "strict"},
{"experimental", "allow non-standardized experimental variants", 0, AV_OPT_TYPE_CONST, {.i64 = FF_COMPLIANCE_EXPERIMENTAL }, INT_MIN, INT_MAX, D|E, "strict"},
{"max_ts_probe", "maximum number of packets to read while waiting for the first timestamp", OFFSET(max_ts_probe), AV_OPT_TYPE_INT, { .i64 = 50 }, 0, INT_MAX, D },
{NULL},
};

1
libavformat/utils.c
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@ -2108,6 +2108,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
!st->codec->extradata)
break;
if (st->first_dts == AV_NOPTS_VALUE &&
st->codec_info_nb_frames < ic->max_ts_probe &&
(st->codec->codec_type == AVMEDIA_TYPE_VIDEO ||
st->codec->codec_type == AVMEDIA_TYPE_AUDIO))
break;

2
libavformat/version.h
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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFORMAT_VERSION_MAJOR 56
#define LIBAVFORMAT_VERSION_MINOR 2
#define LIBAVFORMAT_VERSION_MINOR 3
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \