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

(limited to 'libavcodec/adxdec.c')

diff --git a/libavcodec/adxdec.c b/libavcodec/adxdec.c
index 39223c2e4f..93bbc6b51b 100644
--- a/libavcodec/adxdec.c
+++ b/libavcodec/adxdec.c
@@ -59,7 +59,7 @@ static void adx_decode(ADXContext *c, int16_t *out, const uint8_t *in, int ch)
     s2 = prev->s2;
     for (i = 0; i < 32; i++) {
         d  = get_sbits(&gb, 4);
-        s0 = (BASEVOL * d * scale + SCALE1 * s1 - SCALE2 * s2) >> 14;
+        s0 = ((d << COEFF_BITS) * scale + COEFF1 * s1 - COEFF2 * s2) >> COEFF_BITS;
         s2 = s1;
         s1 = av_clip_int16(s0);
         *out = s1;
-- 
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