From 016e6a3f65a0ebe84e1ee0e8e80c675bc8d7d775 Mon Sep 17 00:00:00 2001
From: Filip Navara <filip.navara@gmail.com>
Date: Fri, 16 Jul 2004 20:24:59 +0000
Subject: [PATCH] - Implementation of mmTaskCreate. Based on patch by Eric
 Pouech.

svn path=/trunk/; revision=10146
---
 reactos/include/mmddk.h      | 10 ++++++++
 reactos/lib/winmm/winmm.c    | 49 +++++++++++++++++++++++++++++++++++-
 reactos/lib/winmm/winmm.spec |  1 +
 3 files changed, 59 insertions(+), 1 deletion(-)

diff --git a/reactos/include/mmddk.h b/reactos/include/mmddk.h
index 15ef1ad763e..29f7b7cba0f 100644
--- a/reactos/include/mmddk.h
+++ b/reactos/include/mmddk.h
@@ -449,6 +449,16 @@ BOOL			WINAPI	mciFreeCommandResource(UINT uTable);
 BOOL		 	WINAPI	DriverCallback(DWORD dwCallBack, UINT uFlags, HDRVR hDev,
 					       UINT wMsg, DWORD dwUser, DWORD dwParam1, DWORD dwParam2);
 
+typedef void (*LPTASKCALLBACK)(DWORD dwInst);
+
+#define TASKERR_NOTASKSUPPORT 1
+#define TASKERR_OUTOFMEMORY   2
+MMRESULT WINAPI mmTaskCreate(LPTASKCALLBACK, HANDLE*, DWORD);
+void     WINAPI mmTaskBlock(HANDLE);
+BOOL     WINAPI mmTaskSignal(HANDLE);
+void     WINAPI mmTaskYield(void);
+HANDLE   WINAPI mmGetCurrentTask(void);
+
 #ifdef __WINESRC__
 #define  WAVE_DIRECTSOUND               0x0080
 #endif
diff --git a/reactos/lib/winmm/winmm.c b/reactos/lib/winmm/winmm.c
index 575f5105493..3df138046e3 100644
--- a/reactos/lib/winmm/winmm.c
+++ b/reactos/lib/winmm/winmm.c
@@ -102,8 +102,9 @@ static	void WINMM_DeleteIData(void)
 	 * inside WINMM_IData */
         CloseHandle(WINMM_IData->psStopEvent);
         CloseHandle(WINMM_IData->psLastEvent);
+        WINMM_IData->cs.DebugInfo = NULL;
         DeleteCriticalSection(&WINMM_IData->cs);
-	HeapFree(GetProcessHeap(), 0, WINMM_IData);
+        HeapFree(GetProcessHeap(), 0, WINMM_IData);
         WINMM_IData = NULL;
     }
 }
@@ -3176,3 +3177,49 @@ UINT WINAPI waveInMessage(HWAVEIN hWaveIn, UINT uMessage,
 
     return MMDRV_Message(wmld, uMessage, dwParam1, dwParam2, TRUE);
 }
+
+struct mm_starter
+{
+    LPTASKCALLBACK      cb;
+    DWORD               client;
+    HANDLE              event;
+};
+
+DWORD WINAPI mmTaskRun(void* pmt)
+{
+    struct mm_starter mms;
+
+    memcpy(&mms, pmt, sizeof(struct mm_starter));
+    HeapFree(GetProcessHeap(), 0, pmt);
+    mms.cb(mms.client);
+    if (mms.event) SetEvent(mms.event);
+    return 0;
+}
+
+MMRESULT WINAPI mmTaskCreate(LPTASKCALLBACK cb, HANDLE* ph, DWORD client)
+{
+    HANDLE               hThread;
+    HANDLE               hEvent;
+    struct mm_starter   *mms;
+
+    mms = HeapAlloc(GetProcessHeap(), 0, sizeof(struct mm_starter));
+    if (mms == NULL) { return TASKERR_OUTOFMEMORY; }
+
+    mms->cb = cb;
+    mms->client = client;
+    if (ph) {
+        mms->event = hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    } else {
+        mms->event = NULL;
+    }
+
+    hThread = CreateThread(0, 0, mmTaskRun, (LPVOID)&mms, 0, NULL);
+    if (!hThread) {
+        HeapFree(GetProcessHeap(), 0, mms);
+        CloseHandle(hEvent);
+        return TASKERR_OUTOFMEMORY;
+    }
+    if (ph) *ph = hEvent;
+    CloseHandle(hThread);
+    return 0;
+}
diff --git a/reactos/lib/winmm/winmm.spec b/reactos/lib/winmm/winmm.spec
index dc13c46b537..7dd06bced9a 100644
--- a/reactos/lib/winmm/winmm.spec
+++ b/reactos/lib/winmm/winmm.spec
@@ -135,6 +135,7 @@
 @ stdcall mmioStringToFOURCCW(wstr long)
 @ stdcall mmioWrite(long ptr long)
 @ stdcall mmsystemGetVersion()
+@ stdcall mmTaskCreate(ptr ptr long)
 @ stdcall sndPlaySoundA(ptr long)
 @ stdcall sndPlaySoundW(ptr long)
 @ stdcall timeBeginPeriod(long)