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-rw-r--r--libavcodec/vp9.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/libavcodec/vp9.c b/libavcodec/vp9.c
index 3ad9056..6888326 100644
--- a/libavcodec/vp9.c
+++ b/libavcodec/vp9.c
@@ -425,7 +425,7 @@ static av_always_inline int inv_recenter_nonneg(int v, int m)
// differential forward probability updates
static int update_prob(VP56RangeCoder *c, int p)
{
- static const int inv_map_table[254] = {
+ static const int inv_map_table[255] = {
7, 20, 33, 46, 59, 72, 85, 98, 111, 124, 137, 150, 163, 176,
189, 202, 215, 228, 241, 254, 1, 2, 3, 4, 5, 6, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24,
@@ -444,7 +444,7 @@ static int update_prob(VP56RangeCoder *c, int p)
207, 208, 209, 210, 211, 212, 213, 214, 216, 217, 218, 219, 220, 221,
222, 223, 224, 225, 226, 227, 229, 230, 231, 232, 233, 234, 235, 236,
237, 238, 239, 240, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251,
- 252, 253,
+ 252, 253, 253,
};
int d;
@@ -474,6 +474,7 @@ static int update_prob(VP56RangeCoder *c, int p)
if (d >= 65)
d = (d << 1) - 65 + vp8_rac_get(c);
d += 64;
+ av_assert2(d < FF_ARRAY_ELEMS(inv_map_table));
}
return p <= 128 ? 1 + inv_recenter_nonneg(inv_map_table[d], p - 1) :
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