winealsa/dsound: Testers asked for capture patch

[Maarten Lankhorst]

Since apparantly counter strike goes 2 fps or so when alsa is used and
capture is enabled, I was looking to see if that can be speed up,.

Since I don't have that game I cannot do it myself, so can someone test
attached patch and see if that fixes performance problems?

Maarten
> From 7593fcf19ba306d0024048e7a49e87b7c8d5c318 Mon Sep 17 00:00:00 2001

From: Maarten Lankhorst 
Date: Thu, 5 Jul 2007 00:41:59 +0200
Subject: [PATCH] winealsa: Increase performance of wavein getposition

---
 dlls/winealsa.drv/wavein.c |   12 +++---------
 1 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/dlls/winealsa.drv/wavein.c b/dlls/winealsa.drv/wavein.c
index 5d731eb..412edd2 100644
--- a/dlls/winealsa.drv/wavein.c
+++ b/dlls/winealsa.drv/wavein.c
@@ -154,7 +154,7 @@ static	DWORD	CALLBACK	widRecorder(LPVOID pmt)
     DWORD               frames_per_period;

wwi->state = WINE_WS_STOPPED;
-    wwi->dwTotalRecorded = 0;
+    InterlockedExchange((LONG*)&wwi->dwTotalRecorded, 0);
     wwi->lpQueuePtr = NULL;

SetEvent(wwi->hStartUpEvent);
@@ -198,7 +198,7 @@ static	DWORD	CALLBACK	widRecorder(LPVOID pmt)
    	    {
    		/* update number of bytes recorded in current buffer and by this device */
                         lpWaveHdr->dwBytesRecorded += bytesRead;
-			wwi->dwTotalRecorded       += bytesRead;
+			InterlockedExchangeAdd((LONG*)&wwi->dwTotalRecorded, bytesRead);

/* buffer is full. notify client */
    		if (lpWaveHdr->dwBytesRecorded == lpWaveHdr->dwBufferLength)
@@ -247,7 +247,7 @@ static	DWORD	CALLBACK	widRecorder(LPVOID pmt)

/* update number of bytes recorded in current buffer and by this device */
                         lpWaveHdr->dwBytesRecorded += dwToCopy;
-                        wwi->dwTotalRecorded += dwToCopy;
+                        InterlockedExchangeAdd((LONG*)&wwi->dwTotalRecorded, dwToCopy);
                         bytesRead -= dwToCopy;
                         pOffset   += dwToCopy;

@@ -385,10 +385,6 @@ static	DWORD	CALLBACK	widRecorder(LPVOID pmt)
    	HeapFree(GetProcessHeap(), 0, buffer);
    	ExitThread(0);
    	/* shouldn't go here */
-	    case WINE_WM_UPDATE:
-		SetEvent(ev);
-		break;
-
        default:
    	FIXME("unknown message %d\n", msg);
    	break;
@@ -784,8 +780,6 @@ static DWORD widGetPosition(WORD wDevID, LPMMTIME lpTime, DWORD uSize)
     }

wwi = &WInDev[wDevID];
-    ALSA_AddRingMessage(&wwi->msgRing, WINE_WM_UPDATE, 0, TRUE);
-
     return ALSA_bytes_to_mmtime(lpTime, wwi->dwTotalRecorded, &wwi->format);
 }