[wdmaudiodev] Re: I need to use my driver instead of wdmaud.drv
- From: Igor Galchuk <ingvio@xxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 22 Sep 2009 13:25:10 +0700
This is my very simple version of audio installable driver (mydrv.drv):
#include <windows.h>
#include <mmsystem.h>
#define _MY_EXPORT __declspec(dllexport)__stdcall
extern "C" LRESULT _MY_EXPORT DriverProc(DWORD_PTR dwDriverId, HDRVR hdrvr,
UINT msg, LONG lParam1, LONG lParam2)
{
DWORD dwRes = 0L;
OutputDebugString(L"ZV_DRV.DRV: input\n");
switch (msg)
{
case DRV_LOAD:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_LOAD\n");
dwRes = 1L; // returns 0L to fail
break;
case DRV_FREE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_FREE\n");
dwRes = 1L; // return value ignored
break;
case DRV_OPEN:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_OPEN\n");
dwRes = 1L; // returns 0L to fail
break; // value subsequently used
// for dwDriverId.
case DRV_CLOSE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_CLOSE\n");
dwRes = 1L; // returns 0L to fail
break;
case DRV_ENABLE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_ENABLE\n");
dwRes = 1L; // return value ignored
break;
case DRV_DISABLE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_DISABLE\n");
dwRes = 1L; // return value ignored
break;
case DRV_INSTALL:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_INSTALL\n");
dwRes = DRVCNF_OK; // Can also return
break; // DRVCNF_CANCEL and DRV_RESTART
case DRV_REMOVE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_REMOVE\n");
dwRes = 1L; // return value ignored
break;
case DRV_QUERYCONFIGURE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_QUERYCONFIGURE\n");
dwRes = 0L; // Zero indicates configuration
break; // NOT supported
case DRV_CONFIGURE:
OutputDebugString(L"ZV_DRV.DRV: msg = DRV_CONFIGURE\n");
dwRes = DRVCNF_OK; // Can also return
break; // DRVCNF_CANCEL and DRVCNF_RESTART
default:
OutputDebugString(L"ZV_DRV.DRV: msg = ? (default)\n");
dwRes = DefDriverProc((DWORD_PTR)&dwDriverId,
hdrvr, msg, lParam1, lParam2);
}
return dwRes;
}
extern "C" DWORD _MY_EXPORT wodMessage(UINT uDeviceID, UINT uMsg, DWORD dwUser,
DWORD dwParam1, DWORD dwParam2)
{
OutputDebugString(L"ZV_DRV.DRV: [wodMessage]\n");
return MMSYSERR_NOTSUPPORTED;
}
extern "C" DWORD _MY_EXPORT widMessage(UINT uDeviceID, UINT uMsg, DWORD dwUser,
DWORD dwParam1, DWORD dwParam2)
{
OutputDebugString(L"ZV_DRV.DRV: [widMessage]\n");
return MMSYSERR_NOTSUPPORTED;
}
extern "C" DWORD _MY_EXPORT mxdMessage(UINT uDeviceID, UINT uMsg, DWORD dwUser,
DWORD dwParam1, DWORD dwParam2)
{
OutputDebugString(L"ZV_DRV.DRV: [mxdMessage]\n");
return MMSYSERR_NOTSUPPORTED;
}
BOOL APIENTRY DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID lpReserved)
{
// Perform actions based on the reason for calling.
OutputDebugString(L"ZV_DRV.DRV - DllMain\n");
switch ( fdwReason )
{
case DLL_PROCESS_ATTACH :
OutputDebugString(L"ZV_DRV.DRV - Process attached\n");
break;
case DLL_PROCESS_DETACH :
OutputDebugString(L"ZV_DRV.DRV - Process detached\n");
break;
case DLL_THREAD_ATTACH :
OutputDebugString(L"ZV_DRV.DRV - Thread attached\n");
break;
case DLL_THREAD_DETACH :
OutputDebugString(L"ZV_DRV.DRV - Thread detached\n");
break;
}
return TRUE;
}
I use MS Visual Studio 2005 Pro and Platform SDK (3790.1830)! This is usual DLL
project. I set "Calling Convention" to "__cdecl" in "C/C++" property of this
project and "Entry Point" to "DllMain" in "Linker" property (section "Advanced"
in both properties).
There can be I have written something incorrectly?
--
Igor Galchuk <ingvio@xxxxxxxxxxx>
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