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lavf: add avformat_close_input().

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It sets the supplied AVFormatContext pointer to NULL after freeing it,
which is safer and its name is consistent with other lavf functions.

Also deprecate av_close_input_file().
This commit is contained in:
Anton Khirnov 2011-12-11 10:34:08 +01:00
parent 3a7f7678eb
commit 526604545f
4 changed files with 27 additions and 1 deletions
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4
doc/APIchanges
View File

@ -13,6 +13,10 @@ libavutil: 2011-04-18
API changes, most recent first:
2011-xx-xx - xxxxxxx - lavf 53.17.0
Add avformat_open_input().
Deprecate av_close_input_file() and av_close_input_stream().
2011-xx-xx - xxxxxxx - lavc 53.25.0
Add nb_samples and extended_data fields to AVFrame.
Deprecate AVCODEC_MAX_AUDIO_FRAME_SIZE.

10
libavformat/avformat.h
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@ -1570,12 +1570,22 @@ attribute_deprecated
void av_close_input_stream(AVFormatContext *s);
#endif
#if FF_API_CLOSE_INPUT_FILE
/**
* @deprecated use avformat_close_input()
* Close a media file (but not its codecs).
*
* @param s media file handle
*/
attribute_deprecated
void av_close_input_file(AVFormatContext *s);
#endif
/**
* Close an opened input AVFormatContext. Free it and all its contents
* and set *s to NULL.
*/
void avformat_close_input(AVFormatContext **s);
/**
* @}
*/

9
libavformat/utils.c
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@ -2684,14 +2684,23 @@ void avformat_free_context(AVFormatContext *s)
av_free(s);
}
#if FF_API_CLOSE_INPUT_FILE
void av_close_input_file(AVFormatContext *s)
{
avformat_close_input(&s);
}
#endif
void avformat_close_input(AVFormatContext **ps)
{
AVFormatContext *s = *ps;
AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
NULL : s->pb;
flush_packet_queue(s);
if (s->iformat->read_close)
s->iformat->read_close(s);
avformat_free_context(s);
*ps = NULL;
if (pb)
avio_close(pb);
}

5
libavformat/version.h
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@ -30,7 +30,7 @@
#include "libavutil/avutil.h"
#define LIBAVFORMAT_VERSION_MAJOR 53
#define LIBAVFORMAT_VERSION_MINOR 16
#define LIBAVFORMAT_VERSION_MINOR 17
#define LIBAVFORMAT_VERSION_MICRO 0
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
@ -122,5 +122,8 @@
#ifndef FF_API_SET_PTS_INFO
#define FF_API_SET_PTS_INFO (LIBAVFORMAT_VERSION_MAJOR < 54)
#endif
#ifndef FF_API_CLOSE_INPUT_FILE
#define FF_API_CLOSE_INPUT_FILE (LIBAVFORMAT_VERSION_MAJOR < 54)
#endif
#endif /* AVFORMAT_VERSION_H */