[FFmpeg-cvslog] swscale/utils: add asserts to check filterpos
Michael Niedermayer
git at videolan.org
Tue Feb 24 01:09:43 CET 2015
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Feb 24 00:35:11 2015 +0100| [fb8e5044b420d4f7409a3bf2cc5498e8302882be] | committer: Michael Niedermayer
swscale/utils: add asserts to check filterpos
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=fb8e5044b420d4f7409a3bf2cc5498e8302882be
---
libswscale/utils.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/libswscale/utils.c b/libswscale/utils.c
index b63ab19..cfa6b21 100644
--- a/libswscale/utils.c
+++ b/libswscale/utils.c
@@ -631,6 +631,13 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
(*filterPos)[i]-= shift;
filter[i * filterSize + srcW - 1 - (*filterPos)[i]] += acc;
}
+ av_assert0((*filterPos)[i] >= 0);
+ av_assert0((*filterPos)[i] < srcW);
+ if ((*filterPos)[i] + filterSize > srcW) {
+ for (j = 0; j < filterSize; j++) {
+ av_assert0((*filterPos)[i] + j < srcW || !filter[i * filterSize + j]);
+ }
+ }
}
// Note the +1 is for the MMX scaler which reads over the end
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