wineoss mixer fix rounding bug

[Robert Reif]

Round results of conversions between OSS and windows values.
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Index: dlls/winmm/wineoss/mixer.c
===================================================================
RCS file: /home/wine/wine/dlls/winmm/wineoss/mixer.c,v
retrieving revision 1.26
diff -u -r1.26 mixer.c
--- dlls/winmm/wineoss/mixer.c	22 Aug 2004 22:26:48 -0000	1.26
+++ dlls/winmm/wineoss/mixer.c	27 Aug 2004 19:24:09 -0000
@@ -1091,15 +1102,15 @@
 		    {
 		    case 1:
 			/* mono... so R = L */
-			mcdu->dwValue = (LOBYTE(LOWORD(val)) * 65536L) / 100;
+			mcdu->dwValue = ((LOBYTE(LOWORD(val)) * 65536.0) / 100.0) + 0.5;
 			TRACE("Reading RL = %ld\n", mcdu->dwValue);
 			break;
 		    case 2:
 			/* stereo, left is paDetails[0] */
-			mcdu->dwValue = (LOBYTE(LOWORD(val)) * 65536L) / 100;
+			mcdu->dwValue = ((LOBYTE(LOWORD(val)) * 65536.0) / 100.0) + 0.5;
 			TRACE("Reading L = %ld\n", mcdu->dwValue);
                         mcdu++;
-			mcdu->dwValue = (HIBYTE(LOWORD(val)) * 65536L) / 100;
+			mcdu->dwValue = ((HIBYTE(LOWORD(val)) * 65536.0) / 100.0) + 0.5;
 			TRACE("Reading R = %ld\n", mcdu->dwValue);
 			break;
 		    default:
@@ -1290,10 +1301,10 @@
 		    case 2:
 			/* stereo, left is paDetails[0] */
 			TRACE("Setting L to %ld\n", mcdu->dwValue);
-			val = ((mcdu->dwValue * 100) >> 16);
+			val = ((mcdu->dwValue * 100.0) / 65536.0) + 0.5;
                         mcdu++;
 			TRACE("Setting R to %ld\n", mcdu->dwValue);
-			val += ((mcdu->dwValue * 100) >> 16) << 8;
+			val += (int)(((mcdu->dwValue * 100) / 65536.0) + 0.5) << 8;
 			break;
 		    default:
 			WARN("Unsupported cChannels (%ld)\n", lpmcd->cChannels);