dsound: Remove unneeded casts.

dlls/dsound/capture.c

@@ -376,7 +376,7 @@ DirectSoundCaptureEnumerateW(
                                  wDesc, sizeof(wDesc)/sizeof(WCHAR) );
             MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
                                  wName, sizeof(wName)/sizeof(WCHAR) );
-            if (lpDSEnumCallback((LPGUID)&DSOUND_capture_guids[wid], wDesc, wName, lpContext) == FALSE)
+            if (lpDSEnumCallback(&DSOUND_capture_guids[wid], wDesc, wName, lpContext) == FALSE)
                 return DS_OK;
 	}
     }
@@ -418,7 +418,7 @@ DSOUND_capture_callback(
     DWORD dw2 )
 {
     DirectSoundCaptureDevice * This = (DirectSoundCaptureDevice*)dwUser;
-    IDirectSoundCaptureBufferImpl * Moi = (IDirectSoundCaptureBufferImpl*) This->capture_buffer;
+    IDirectSoundCaptureBufferImpl * Moi = This->capture_buffer;
     TRACE("(%p,%08x(%s),%08x,%08x,%08x) entering at %d\n",hwi,msg,
 	msg == MM_WIM_OPEN ? "MM_WIM_OPEN" : msg == MM_WIM_CLOSE ? "MM_WIM_CLOSE" :
 	msg == MM_WIM_DATA ? "MM_WIM_DATA" : "UNKNOWN",dwUser,dw1,dw2,GetTickCount());
@@ -1388,7 +1388,7 @@ HRESULT IDirectSoundCaptureBufferImpl_Create(
     	HRESULT err = DS_OK;
         LPBYTE newbuf;
         DWORD buflen;
-        IDirectSoundCaptureBufferImpl *This = (IDirectSoundCaptureBufferImpl *)*ppobj;
+        IDirectSoundCaptureBufferImpl *This = *ppobj;
 
         This->ref = 1;
         This->device = device;

dlls/dsound/dsound.c

@@ -1560,7 +1560,7 @@ HRESULT DirectSoundDevice_CreateSoundBuffer(
            if (device->hwbuf)
                device->dsbd.dwFlags |= DSBCAPS_LOCHARDWARE;
            else device->dsbd.dwFlags |= DSBCAPS_LOCSOFTWARE;
-           hres = PrimaryBufferImpl_Create(device, (PrimaryBufferImpl**)&(device->primary), &(device->dsbd));
+           hres = PrimaryBufferImpl_Create(device, &(device->primary), &(device->dsbd));
            if (device->primary) {
                IDirectSoundBuffer_AddRef((LPDIRECTSOUNDBUFFER8)(device->primary));
                *ppdsb = (LPDIRECTSOUNDBUFFER)(device->primary);
@@ -1628,12 +1628,12 @@ HRESULT DirectSoundDevice_CreateSoundBuffer(
             return DSERR_INVALIDPARAM;
         }
 
-        hres = IDirectSoundBufferImpl_Create(device, (IDirectSoundBufferImpl**)&dsb, dsbd);
+        hres = IDirectSoundBufferImpl_Create(device, &dsb, dsbd);
         if (dsb) {
             hres = SecondaryBufferImpl_Create(dsb, (SecondaryBufferImpl**)ppdsb);
             if (*ppdsb) {
                 dsb->secondary = (SecondaryBufferImpl*)*ppdsb;
-                IDirectSoundBuffer_AddRef((LPDIRECTSOUNDBUFFER)*ppdsb);
+                IDirectSoundBuffer_AddRef(*ppdsb);
             } else
                 WARN("SecondaryBufferImpl_Create failed\n");
         } else

dlls/dsound/mixer.c

@@ -445,11 +445,11 @@ static LPBYTE DSOUND_MixerVol(const IDirectSoundBufferImpl *dsb, DWORD writepos,
 		/* 8-bit WAV is unsigned, but we need to operate */
 		/* on signed data for this to work properly */
 		for (i = 0; i < len; i+=2) {
-			*(bpc++) = (((INT)(*(mem++) - 128) * vLeft) >> 16) + 128;
-			*(bpc++) = (((INT)(*(mem++) - 128) * vRight) >> 16) + 128;
+			*(bpc++) = (((*(mem++) - 128) * vLeft) >> 16) + 128;
+			*(bpc++) = (((*(mem++) - 128) * vRight) >> 16) + 128;
 		}
 		if (len % 2 == 1 && nChannels == 1)
-			*(bpc++) = (((INT)(*(mem++) - 128) * vLeft) >> 16) + 128;
+			*(bpc++) = (((*(mem++) - 128) * vLeft) >> 16) + 128;
 		break;
 	case 16:
 		/* 16-bit WAV is signed -- much better */