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authorMichael Niedermayer <michael@niedermayer.cc>2017-06-20 14:38:34 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2017-06-22 03:08:45 +0200
commitfc30465bcb35c38b411af99f10c0d44f6b19302a (patch)
tree4b61670e0b5b43b182a81b6632396f9c83c594ad
parentaf1f0f815b9a8a16c9a9e517d9fde202adc13d4b (diff)
downloadffmpeg-fc30465bcb35c38b411af99f10c0d44f6b19302a.tar.gz
avcodec/hevc_filter: Fix invalid shift
Fixes: runtime error: left shift of negative value -1 Fixes: 2299/clusterfuzz-testcase-minimized-4843509351710720 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> (cherry picked from commit d7b3d5c3f2e2ff1994762b5e09c05fbc33790b5b) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavcodec/hevc_filter.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/hevc_filter.c b/libavcodec/hevc_filter.c
index 1f33b0cdfe..9fbcd1d8b8 100644
--- a/libavcodec/hevc_filter.c
+++ b/libavcodec/hevc_filter.c
@@ -471,7 +471,7 @@ static int get_pcm(HEVCContext *s, int x, int y)
#define TC_CALC(qp, bs) \
tctable[av_clip((qp) + DEFAULT_INTRA_TC_OFFSET * ((bs) - 1) + \
- (tc_offset >> 1 << 1), \
+ (tc_offset & -2), \
0, MAX_QP + DEFAULT_INTRA_TC_OFFSET)]
static void deblocking_filter_CTB(HEVCContext *s, int x0, int y0)