dsound: Fix IDirectSoundCaptureBuffer Start/Stop, with tests.

dlls/dsound/capture.c

@@ -493,13 +493,14 @@ static HRESULT WINAPI IDirectSoundCaptureBufferImpl_Start(IDirectSoundCaptureBuf
 
     EnterCriticalSection(&(This->device->lock));
 
-    This->flags = dwFlags;
-    TRACE("old This->device->state=%s\n",captureStateString[This->device->state]);
     if (This->device->state == STATE_STOPPED)
         This->device->state = STATE_STARTING;
     else if (This->device->state == STATE_STOPPING)
         This->device->state = STATE_CAPTURING;
+    else
+        goto out;
     TRACE("new This->device->state=%s\n",captureStateString[This->device->state]);
+    This->flags = dwFlags;
 
     if (This->device->buffer)
         FillMemory(This->device->buffer, This->device->buflen, (This->device->pwfx->wBitsPerSample == 8) ? 128 : 0);
@@ -511,6 +512,7 @@ static HRESULT WINAPI IDirectSoundCaptureBufferImpl_Start(IDirectSoundCaptureBuf
         return hres;
     }
 
+out:
     LeaveCriticalSection(&This->device->lock);
 
     TRACE("returning DS_OK\n");

dlls/dsound/tests/capture.c

@@ -394,15 +394,18 @@ static void test_capture_buffer(LPDIRECTSOUNDCAPTURE dsco,
     ok(ref==0,"IDirectSoundNotify_Release(): has %d references, should have "
        "0\n",ref);
 
-    if (record) {
     rc=IDirectSoundCaptureBuffer_Start(dscbo,DSCBSTART_LOOPING);
     ok(rc==DS_OK,"IDirectSoundCaptureBuffer_Start() failed: %08x\n", rc);
 
+    rc=IDirectSoundCaptureBuffer_Start(dscbo,0);
+    ok(rc==DS_OK,"IDirectSoundCaptureBuffer_Start() failed: %08x\n", rc);
+
     rc=IDirectSoundCaptureBuffer_GetStatus(dscbo,&status);
     ok(rc==DS_OK,"IDirectSoundCaptureBuffer_GetStatus() failed: %08x\n", rc);
     ok(status==(DSCBSTATUS_CAPTURING|DSCBSTATUS_LOOPING),
        "GetStatus: bad status: %x\n",status);
 
+    if (record) {
 	/* wait for the notifications */
 	for (i = 0; i < (NOTIFICATIONS * 2); i++) {
 	    rc=WaitForMultipleObjects(NOTIFICATIONS,state.event,FALSE,3000);
@@ -417,9 +420,12 @@ static void test_capture_buffer(LPDIRECTSOUNDCAPTURE dsco,
 		break;
 	}
 
+    }
+    rc=IDirectSoundCaptureBuffer_Stop(dscbo);
+    ok(rc==DS_OK,"IDirectSoundCaptureBuffer_Stop() failed: %08x\n", rc);
+
     rc=IDirectSoundCaptureBuffer_Stop(dscbo);
     ok(rc==DS_OK,"IDirectSoundCaptureBuffer_Stop() failed: %08x\n", rc);
-    }
 }
 
 static BOOL WINAPI dscenum_callback(LPGUID lpGuid, LPCSTR lpcstrDescription,