mciavi: First check inputs, then (perhaps) stop and act.

dlls/mciavi32/mciavi.c

@@ -217,8 +217,6 @@ static	DWORD	MCIAVI_mciOpen(UINT wDevID, DWORD dwFlags,
 
     TRACE("(%04x, %08X, %p)\n", wDevID, dwFlags, lpOpenParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpOpenParms == NULL) 		return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = (WINE_MCIAVI *)mciGetDriverData(wDevID);
@@ -300,8 +298,6 @@ DWORD MCIAVI_mciClose(UINT wDevID, DWORD dwFlags, LPMCI_GENERIC_PARMS lpParms)
 
     TRACE("(%04x, %08X, %p)\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     wma = MCIAVI_mciGetOpenDev(wDevID);
     if (wma == NULL) 	return MCIERR_INVALID_DEVICE_ID;
 
@@ -676,13 +672,13 @@ static	DWORD	MCIAVI_mciSeek(UINT wDevID, DWORD dwFlags, LPMCI_SEEK_PARMS lpParms
 
     TRACE("(%04x, %08X, %p)\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
     if (wma == NULL)		return MCIERR_INVALID_DEVICE_ID;
 
+    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
+
     EnterCriticalSection(&wma->cs);
 
     if (dwFlags & MCI_SEEK_TO_START) {
@@ -718,13 +714,13 @@ static DWORD	MCIAVI_mciLoad(UINT wDevID, DWORD dwFlags, LPMCI_DGV_LOAD_PARMSW lp
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
     if (wma == NULL)		return MCIERR_INVALID_DEVICE_ID;
 
+    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
+
     return 0;
 }
 
@@ -737,8 +733,6 @@ static	DWORD	MCIAVI_mciRealize(UINT wDevID, DWORD dwFlags, LPMCI_GENERIC_PARMS l
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
@@ -780,13 +774,13 @@ static	DWORD	MCIAVI_mciStep(UINT wDevID, DWORD dwFlags, LPMCI_DGV_STEP_PARMS lpP
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
     if (wma == NULL)		return MCIERR_INVALID_DEVICE_ID;
 
+    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
+
     return 0;
 }
 
@@ -799,8 +793,6 @@ static	DWORD	MCIAVI_mciCue(UINT wDevID, DWORD dwFlags, LPMCI_DGV_CUE_PARMS lpPar
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
@@ -818,8 +810,6 @@ static	DWORD	MCIAVI_mciSetAudio(UINT wDevID, DWORD dwFlags, LPMCI_DGV_SETAUDIO_P
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
@@ -837,8 +827,6 @@ static	DWORD	MCIAVI_mciSignal(UINT wDevID, DWORD dwFlags, LPMCI_DGV_SIGNAL_PARMS
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
@@ -856,8 +844,6 @@ static	DWORD	MCIAVI_mciSetVideo(UINT wDevID, DWORD dwFlags, LPMCI_DGV_SETVIDEO_P
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);
@@ -875,8 +861,6 @@ static	DWORD	MCIAVI_mciConfigure(UINT wDevID, DWORD dwFlags, LPMCI_GENERIC_PARMS
 
     FIXME("(%04x, %08x, %p) : stub\n", wDevID, dwFlags, lpParms);
 
-    MCIAVI_mciStop(wDevID, MCI_WAIT, NULL);
-
     if (lpParms == NULL)	return MCIERR_NULL_PARAMETER_BLOCK;
 
     wma = MCIAVI_mciGetOpenDev(wDevID);