From 954d94dd5e13ba7a5e9e049d0f980bddced9644c Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Sun, 20 Nov 2011 14:03:21 -0500
Subject: adx: use 12-bit coefficients instead of 14-bit to avoid integer
 overflow

---
 libavcodec/adxenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libavcodec/adxenc.c')

diff --git a/libavcodec/adxenc.c b/libavcodec/adxenc.c
index fde0b8239e..7225c3159d 100644
--- a/libavcodec/adxenc.c
+++ b/libavcodec/adxenc.c
@@ -48,7 +48,7 @@ static void adx_encode(unsigned char *adx,const short *wav,
     s2 = prev->s2;
     for(i=0;i<32;i++) {
         s0 = wav[i];
-        d = ((s0<<14) - SCALE1*s1 + SCALE2*s2)/BASEVOL;
+        d = ((s0 << COEFF_BITS) - COEFF1 * s1 + COEFF2 * s2) >> COEFF_BITS;
         data[i]=d;
         if (max<d) max=d;
         if (min>d) min=d;
-- 
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