From 37a1cc4834afd46a278860bb014fdaa1d02e124a Mon Sep 17 00:00:00 2001
From: Justin Ruggles <justin.ruggles@gmail.com>
Date: Thu, 21 May 2009 00:15:44 +0000
Subject: [PATCH] eac3dec: fix bug in GAQ dequantization. large mantissas
 should only be decoded when the gain value is 2 or 4.

Originally committed as revision 18889 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/eac3dec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/eac3dec.c b/libavcodec/eac3dec.c
index 62f6d792cf..0cbf5b9494 100644
--- a/libavcodec/eac3dec.c
+++ b/libavcodec/eac3dec.c
@@ -175,7 +175,7 @@ void ff_eac3_decode_transform_coeffs_aht_ch(AC3DecodeContext *s, int ch)
 
             for (blk = 0; blk < 6; blk++) {
                 int mant = get_sbits(gbc, gbits);
-                if (mant == -(1 << (gbits-1))) {
+                if (log_gain && mant == -(1 << (gbits-1))) {
                     /* large mantissa */
                     int b;
                     int mbits = bits - (2 - log_gain);