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mpjpegdec: don't try to alloc an AVIOContext when probe is guaranteed to fail 

The first check is done without the AVIOContext, so alloc it only if said check succeeds

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
James Almer 2015-06-08 17:19:25 -03:00 committed by Janne Grunau
parent 210921722b
commit b380337020
1 changed files with 4 additions and 4 deletions
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8
libavformat/mpjpegdec.c
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@ -83,13 +83,13 @@ static int mpjpeg_read_probe(AVProbeData *p)
char line[128] = { 0 };
int ret = 0;
if (p->buf_size < 2 || p->buf[0] != '-' || p->buf[1] != '-')
return 0;
pb = avio_alloc_context(p->buf, p->buf_size, 0, NULL, NULL, NULL, NULL);
if (!pb)
return AVERROR(ENOMEM);
if (p->buf_size < 2 || p->buf[0] != '-' || p->buf[1] != '-')
goto end;
while (!pb->eof_reached) {
ret = get_line(pb, line, sizeof(line));
if (ret < 0)
@ -101,7 +101,7 @@ static int mpjpeg_read_probe(AVProbeData *p)
break;
}
}
end:
av_free(pb);
return ret;