fixed peak-calculation for negative signal-values

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@795 0778d3d1-df1d-0410-868b-ea421aaaa00d

ChangeLog

@@ -1,5 +1,8 @@
 2008-03-15	Tobias Doerffel	<tobydox/at/users/dot/sourceforge/dot/net>
 
+	* src/core/mixer.cpp:
+	fixed peak-calculation for negative signal-values
+
 	* include/effect_view.h:
 	* src/widgets/effect_view.cpp:
 	- fixed random crashes when removing effect-views

src/core/mixer.cpp

@@ -741,6 +741,10 @@ float mixer::peakValueLeft( surroundSampleFrame * _ab, const f_cnt_t _frames )
 		{
 			p = _ab[f][0];
 		}
+		else if( -_ab[f][0] > p )
+		{
+			p = -_ab[f][0];
+		}
 	}
 	return( p );
 }
@@ -757,6 +761,10 @@ float mixer::peakValueRight( surroundSampleFrame * _ab, const f_cnt_t _frames )
 		{
 			p = _ab[f][1];
 		}
+		else if( -_ab[f][1] > p )
+		{
+			p = -_ab[f][1];
+		}
 	}
 	return( p );
 }