More correctly establish cases where the OSS input buffer should not

dlls/winmm/wineoss/audio.c

@@ -375,11 +375,27 @@ static DWORD      OSS_RawOpenDevice(OSS_DEVICE* ossdev, int strict_format)
 	
     	ossdev->bOutputEnabled = ((trigger & PCM_ENABLE_OUTPUT) == PCM_ENABLE_OUTPUT);
     	ossdev->bInputEnabled  = ((trigger & PCM_ENABLE_INPUT) == PCM_ENABLE_INPUT);
+
+        /* If we do not have full duplex, but they opened RDWR 
+        ** (as you have to in order for an mmap to succeed)
+        ** then we start out with input off
+        */
+        if (ossdev->open_access == O_RDWR && !ossdev->full_duplex && 
+            ossdev->bInputEnabled && ossdev->bOutputEnabled) {
+    	    ossdev->bInputEnabled  = FALSE;
+            trigger &= ~PCM_ENABLE_INPUT;
+	    ioctl(fd, SNDCTL_DSP_SETTRIGGER, &trigger);
+        }
     } else {
     	ossdev->bOutputEnabled = TRUE;	/* OSS enables by default */
     	ossdev->bInputEnabled  = TRUE;	/* OSS enables by default */
     }
 
+    if (ossdev->open_access == O_RDONLY)
+        ossdev->bOutputEnabled = FALSE;
+    if (ossdev->open_access == O_WRONLY)
+        ossdev->bInputEnabled = FALSE;
+
     return MMSYSERR_NOERROR;
 
 error:

dlls/winmm/wineoss/dsrender.c

@@ -735,6 +735,7 @@ static HRESULT WINAPI IDsDriverImpl_Open(PIDSDRIVER iface)
 
     /* make sure the card doesn't start playing before we want it to */
     WOutDev[This->wDevID].ossdev->bOutputEnabled = FALSE;
+    WOutDev[This->wDevID].ossdev->bInputEnabled = FALSE;
     enable = getEnables(WOutDev[This->wDevID].ossdev);
     if (ioctl(WOutDev[This->wDevID].ossdev->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {
 	ERR("ioctl(%s, SNDCTL_DSP_SETTRIGGER) failed (%s)\n",WOutDev[This->wDevID].ossdev->dev_name, strerror(errno));
@@ -815,6 +816,7 @@ static HRESULT WINAPI DSD_CreatePrimaryBuffer(PIDSDRIVER iface,
     *ppbBuffer          = (*ippdsdb)->mapping;
 
     /* some drivers need some extra nudging after mapping */
+    WOutDev[This->wDevID].ossdev->bInputEnabled = FALSE;
     WOutDev[This->wDevID].ossdev->bOutputEnabled = FALSE;
     enable = getEnables(WOutDev[This->wDevID].ossdev);
     if (ioctl((*ippdsdb)->fd, SNDCTL_DSP_SETTRIGGER, &enable) < 0) {