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-rw-r--r--celt/celt.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/celt/celt.c b/celt/celt.c
index f332191c..9ce23469 100644
--- a/celt/celt.c
+++ b/celt/celt.c
@@ -207,6 +207,10 @@ void comb_filter(opus_val32 *y, opus_val32 *x, int T0, int T1, int N,
OPUS_MOVE(y, x, N);
return;
}
+ /* When the gain is zero, T0 and/or T1 is set to zero. We need
+ to have then be at least 2 to avoid processing garbage data. */
+ T0 = IMAX(T0, COMBFILTER_MINPERIOD);
+ T1 = IMAX(T1, COMBFILTER_MINPERIOD);
g00 = MULT16_16_P15(g0, gains[tapset0][0]);
g01 = MULT16_16_P15(g0, gains[tapset0][1]);
g02 = MULT16_16_P15(g0, gains[tapset0][2]);