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avformat: refactor avformat_close_input

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Do not crash if the input format is not allocated yet.
This commit is contained in:
Luca Barbato 2012-09-04 16:05:28 +02:00
parent 4d1f443c3d
commit 44272c1ccc
1 changed files with 13 additions and 4 deletions
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17
libavformat/utils.c
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@ -2702,12 +2702,21 @@ void av_close_input_file(AVFormatContext *s)
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;
AVIOContext *pb = s->pb;
if ((s->iformat && s->iformat->flags & AVFMT_NOFILE) &&
(s->flags & AVFMT_FLAG_CUSTOM_IO))
pb = NULL;
flush_packet_queue(s);
if (s->iformat->read_close)
s->iformat->read_close(s);
if (s->iformat) {
if (s->iformat->read_close)
s->iformat->read_close(s);
}
avformat_free_context(s);
*ps = NULL;
avio_close(pb);