audiorouting.cpp

AudioRouting.cpp : Defines the entry point for the DLL application. Audio Routing Service

                pC->hThread = NULL;
            }
        }
        DeleteCriticalSection( &pC->cs );
        LocalFree( pC );
        pC=NULL;
    }
    FUNCTRACEOUT();
    return TRUE;
}
extern "C" __declspec(dllexport) ULONG ARS_Init(
    ULONG Data
)
{  
    ARSCONTEXT *Context;
    FUNCTRACEIN();
    Context = (ARSCONTEXT*)LocalAlloc(LPTR, sizeof(ARSCONTEXT));

    if ( Context )
    {
        InitializeCriticalSection( &Context->cs );
        Context->hDllCoredll = LoadLibrary(TEXT("coredll.dll"));
        if ( Context->hDllCoredll )
        {
            Context->pfnKernelIoControl = (_KernelIoControl)GetProcAddress(Context->hDllCoredll,TEXT("KernelIoControl"));
            if ( NULL == Context->pfnKernelIoControl )
            {
                DebugMsg(L"Could not grab KernelIoControl\r\n");
                ARS_Deinit( (ULONG)Context );
                Context = NULL;
                goto ErrorExit;
            }

            // Get CPU type
            PROCESSOR_INFO pi;
            ULONG bytesWritten;
            BOOL bRet = Context->pfnKernelIoControl( IOCTL_PROCESSOR_INFORMATION, NULL, 0, &pi, sizeof( pi ), &bytesWritten);
            if (bRet)
            {
                // look for OMAP730,850 or 1030
                if ( wcsstr( pi.szProcessorName, L"OMAP730") 
                    || wcsstr( pi.szProcessorName, L"OMAP850") 
                    || wcsstr( pi.szProcessorName, L"OMAP1030") )
                {
                    DebugMsg(L"ProcName: %s\r\n", pi.szProcessorName );

                    // Go with omap
                    Context->AudioRouting = (CAudioRouting *) new CAudioRoutingTIOmap();
                    bool boolRet = Context->AudioRouting->Init();
                    if ( !boolRet )
                    {
                        DebugMsg(L"Could not grab KernelIoControl\r\n");
                        delete Context->AudioRouting;
                        Context->AudioRouting = NULL;
                        ARS_Deinit( (ULONG)Context );
                        Context = NULL;
                        goto ErrorExit;
                    }

                }
            }
            else
            {
                DebugMsg(L"KernelIoControl call failed %d", GetLastError() );
            }
        }
#if 0
        // Start the service
        if (StartService( Context ))
        {
            Context->ServiceStatus = SERVICE_STATE_ON;
        }
#endif
    }

ErrorExit:
    FUNCTRACEOUT();

    return (ULONG)Context;    
}



extern "C" __declspec(dllexport) ULONG ARS_Open(  
    ULONG Data,
    ULONG Access,
    ULONG ShareMode
)
{
    return Data;
}

extern "C" __declspec(dllexport) BOOL ARS_Close(
    ULONG Data
    )
{
    return TRUE;
}

extern "C" __declspec(dllexport) ULONG ARS_Read(
    ULONG Data,
    LPVOID  Buffer,
    ULONG   Length

    )
{
    return 0;
}
extern "C" __declspec(dllexport) ULONG ARS_Write(
    ULONG   Data,
    LPVOID  Buffer,
    ULONG   Length
    )
{
    return 0;
}


//______________________________________________________
extern "C" __declspec(dllexport) BOOL ARS_IOControl(
  ULONG Data,
  ULONG Code,
  PBYTE pBufIn,
  ULONG LenIn,
  PBYTE pBufOut,
  ULONG LenOut,
  ULONG *pActualOut
)
{
    ARSCONTEXT *pC = (ARSCONTEXT*)Data;
    ULONG ErrorCode = ERROR_INVALID_PARAMETER;
    BOOL bRet=FALSE;

    FUNCTRACEIN();

    DebugMsg(L"IOCTL_SERVICE_STATUS: %x (code:%x)\r\n", IOCTL_SERVICE_STATUS, Code);
    switch (Code)
    {
    case IOCTL_SERVICE_START:
        DebugMsg(L"IOCTL_SERVICE_START\r\n");
        if ( SERVICE_STATE_ON == pC->ServiceStatus )
        {
            ErrorCode=ERROR_SERVICE_ALREADY_RUNNING;
        }
        else
        {
            if (StartService(pC))
            {
                pC->ServiceStatus = SERVICE_STATE_ON;
                ErrorCode=ERROR_SUCCESS;
                bRet = TRUE;
            }
        }
        break;

    case IOCTL_SERVICE_STOP:
        DebugMsg(L"IOCTL_SERVICE_STOP\r\n");
        if (SERVICE_STATE_ON == pC->ServiceStatus)
        {
            if (StopService(pC))
            {
                pC->ServiceStatus = SERVICE_STATE_OFF;
                ErrorCode=ERROR_SUCCESS;
                bRet = TRUE;
            }
        } 
        else 
	    {
		    ErrorCode = ERROR_SERVICE_NOT_ACTIVE;
	    }
        break;
    case IOCTL_SERVICE_STATUS:
        DebugMsg(L"IOCTL_SERVICE_STATUS\r\n");
        if (pBufOut && (LenOut>=sizeof(ULONG)) )
        {
            *(ULONG*)pBufOut = pC->ServiceStatus;
            if (pActualOut)
            {
                DebugMsg(L"ServiceStatus: %x\r\n",pC->ServiceStatus);
                *pActualOut = sizeof(ULONG);
                bRet=TRUE;
                ErrorCode=ERROR_SUCCESS;
            }
        }
        break;
    case IOCTL_SERVICE_QUERY_CAN_DEINIT:
        DebugMsg(L"IOCTL_SERVICE_QUERY_CAN_DEINIT\r\n");
        if (pBufOut && (LenOut>=sizeof(ULONG)) )
        {
            *(ULONG*)pBufOut = TRUE;
            if (pActualOut)
            {
                *pActualOut = sizeof(ULONG);
                bRet=TRUE;
                ErrorCode=ERROR_SUCCESS;
            }
        }
        break;

    case IOCTL_SERVICE_INSTALL:
        DebugMsg(L"IOCTL_SERVICE_INSTALL\r\n");
    break;
    case IOCTL_SERVICE_UNINSTALL:
        DebugMsg(L"IOCTL_SERVICE_UNINSTALL\r\n");
    break;
    default:
        DebugMsg(L"ARS_IOControl: Unhandled IOCTL 0x%x\r\n", (Code >> 2) & 0x3fff);
        break;

    }

    FUNCTRACEOUT();
    SetLastError(ErrorCode);
    
    return bRet;
}


extern "C" __declspec(dllexport) BOOL PopulateAudioRoutingServiceRegistry(void)
{

    FUNCTRACEIN();

    HKEY hKey;
    ULONG Dispo;
    long r=RegCreateKeyEx(HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", 0, NULL, 0, NULL, NULL, &hKey, &Dispo);
    if (ERROR_SUCCESS!=r)
    {
        DebugMsg(L"Could not create  HCConfigService key (%d)\r\n", GetLastError());
    }
    else
    {
        RegCloseKey(hKey);
    }


    HRESULT hr = RegistrySetString( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Dll", L"AudioRouting.dll");
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n", L"Dll");
    }
    hr = RegistrySetString( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Prefix", L"ARS");
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n",  L"Prefix");
    }
    hr = RegistrySetString( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"DisplayName", L"ColumbusAudio");
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n", L"DisplayName");
    }
    hr = RegistrySetString( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Description", L"Columbus Audio Rotuing Service");
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n", L"Description");
    }
    hr = RegistrySetDWORD( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Flags", 0);
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n",  L"Flags");
    }
    hr = RegistrySetDWORD( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Index", 1);
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n",  L"Index");
    }
        hr = RegistrySetDWORD( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Keep", 1);
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n",L"Keep" );
    }
    hr = RegistrySetDWORD( HKEY_LOCAL_MACHINE, L"Services\\AudioRouting", L"Index", 80);
    if (S_OK != hr)
    {
        DebugMsg(L"Failed to write reg key %s\r\n",L"Index" );
    }
    FUNCTRACEOUT();
    return TRUE;
}