📄 wavemain.cpp
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{
DeviceContext *pDeviceContext;
UINT NumDevs = g_pHWContext->GetNumInputDevices();
if (pStreamContext)
{
pDeviceContext=pStreamContext->GetDeviceContext();
}
else
{
pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
}
//
// Is there support for this input (both hardware and software) ?
//
if ( pDeviceContext )
{
dwRet = pDeviceContext->GetDevCaps((PVOID)dwParam1,dwParam2);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
}
break;
}
case WODM_GETEXTDEVCAPS:
{
DeviceContext *pDeviceContext;
UINT NumDevs = g_pHWContext->GetNumOutputDevices();
if (pStreamContext)
{
pDeviceContext=pStreamContext->GetDeviceContext();
}
else
{
pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
}
//
// Is there support for this output (both hardware and software) ?
//
if ( pDeviceContext )
{
dwRet = pDeviceContext->GetExtDevCaps((PVOID)dwParam1,dwParam2);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
}
break;
}
case WODM_OPEN:
{
DEBUGMSG(ZONE_WODM, (TEXT("WODM_OPEN\r\n")));
DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
//
// Is there support for this output (both hardware and software) ?
//
if ( pDeviceContext )
{
dwRet = pDeviceContext->OpenStream((LPWAVEOPENDESC)dwParam1, dwParam2, (StreamContext **)dwUser);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
}
break;
}
case WIDM_OPEN:
{
DEBUGMSG(ZONE_WIDM, (TEXT("WIDM_OPEN\r\n")));
DeviceContext *pDeviceContext = g_pHWContext->GetInputDeviceContext(uDeviceId);
if ( pDeviceContext )
{
dwRet = pDeviceContext->OpenStream((LPWAVEOPENDESC)dwParam1, dwParam2, (StreamContext **)dwUser);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
}
break;
}
case WODM_CLOSE:
case WIDM_CLOSE:
{
DEBUGMSG(ZONE_WODM|ZONE_WIDM, (TEXT("WIDM_CLOSE/WODM_CLOSE\r\n")));
ASSERT( pStreamContext );
dwRet = pStreamContext->Close();
// Release stream context here, rather than inside StreamContext::Close, so that if someone
// (like CMidiStream) has subclassed Close there's no chance that the object will get released
// out from under them.
if (dwRet==MMSYSERR_NOERROR)
{
pStreamContext->Release();
}
break;
}
case WODM_RESTART:
case WIDM_START:
{
ASSERT( pStreamContext );
// This message will cause a performance loss so be careful usng it.
// DEBUGMSG(ZONE_WODM|ZONE_WIDM, (TEXT("WIDM_START/WODM_START\r\n")));
dwRet = pStreamContext->Run();
break;
}
case WODM_PAUSE:
case WIDM_STOP:
{
ASSERT( pStreamContext );
DEBUGMSG(ZONE_WODM|ZONE_WIDM, (TEXT("WIDM_STOP/WODM_STOP\r\n")));
dwRet = pStreamContext->Stop();
break;
}
case WODM_GETPOS:
case WIDM_GETPOS:
{
ASSERT( pStreamContext );
// This message will cause a performance loss so be careful usng it.
// DEBUGMSG(ZONE_WODM|ZONE_WIDM, (TEXT("WIDM_GETPOS/WODM_GETPOS\r\n")));
dwRet = pStreamContext->GetPos((PMMTIME)dwParam1);
break;
}
case WODM_RESET:
case WIDM_RESET:
{
ASSERT( pStreamContext );
// This message will cause a performance loss so be careful usng it.
// DEBUGMSG(ZONE_WODM|ZONE_WIDM, (TEXT("WIDM_RESET/WODM_RESET\r\n")));
dwRet = pStreamContext->Reset();
break;
}
case WODM_WRITE:
case WIDM_ADDBUFFER:
{
ASSERT( pStreamContext );
// This message will cause a performance loss so be careful usng it.
// DEBUGMSG(ZONE_WODM|ZONE_WIDM, (TEXT("WODM_WRITE/WIDM_ADDBUFFER, Buffer=0x%X\r\n"),dwParam1));
dwRet = pStreamContext->QueueBuffer((LPWAVEHDR)dwParam1);
break;
}
case WODM_GETVOLUME:
{
PULONG pdwGain = (PULONG)dwParam1;
UINT NumDevs = g_pHWContext->GetNumOutputDevices();
DEBUGMSG(ZONE_WODM, (TEXT("WODM_GETVOLUME\r\n")));
if (pStreamContext)
{
*pdwGain = pStreamContext->GetGain();
}
else
{
DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
#ifdef USE_HW_GAIN_WODM_SETGETVOLUME
// Handle device gain in hardware
if ( pDeviceContext )
{
*pdwGain = g_pHWContext->GetOutputGain();
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
break;
}
*pdwGain = g_pHWContext->GetOutputGain();
#else
// Handle device gain in software
if ( pDeviceContext )
{
*pdwGain = pDeviceContext->GetGain();
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
break;
}
#endif
}
dwRet = MMSYSERR_NOERROR;
break;
}
case WODM_SETVOLUME:
{
UINT NumDevs = g_pHWContext->GetNumOutputDevices();
DWORD dwGain = dwParam1;
DEBUGMSG(ZONE_WODM, (TEXT("WODM_SETVOLUME\r\n")));
if (pStreamContext)
{
dwRet = pStreamContext->SetGain(dwGain);
}
else
{
DeviceContext *pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
#ifdef USE_HW_GAIN_WODM_SETGETVOLUME
// Handle device gain in hardware
if ( pDeviceContext )
{
dwRet = g_pHWContext->SetOutputGain(dwGain);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
break;
}
#else
// Handle device gain in software
if ( pDeviceContext )
{
dwRet = pDeviceContext->SetGain(dwGain);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
break;
}
#endif
}
break;
}
case WODM_BREAKLOOP:
{
ASSERT( pStreamContext );
dwRet = pStreamContext->BreakLoop();
break;
}
case WODM_SETPLAYBACKRATE:
{
WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
ASSERT( pWaveStream );
dwRet = pWaveStream->SetRate(dwParam1);
break;
}
case WODM_GETPLAYBACKRATE:
{
WaveStreamContext *pWaveStream = (WaveStreamContext *)dwUser;
ASSERT( pWaveStream );
dwRet = pWaveStream->GetRate((DWORD *)dwParam1);
break;
}
case MM_WOM_SETSECONDARYGAINCLASS:
{
ASSERT( pStreamContext );
dwRet = pStreamContext->SetSecondaryGainClass(dwParam1);
break;
}
case MM_WOM_SETSECONDARYGAINLIMIT:
{
DeviceContext *pDeviceContext;
if (pStreamContext)
{
pDeviceContext = pStreamContext->GetDeviceContext();
}
else
{
pDeviceContext = g_pHWContext->GetOutputDeviceContext(uDeviceId);
}
//
// Is there support for this output (both hardware and software) ?
//
if ( pDeviceContext )
{
dwRet = pDeviceContext->SetSecondaryGainLimit(dwParam1,dwParam2);
}
else
{
dwRet = MMSYSERR_BADDEVICEID;
}
break;
}
case MM_WOM_FORCESPEAKER:
{
if (pStreamContext)
{
dwRet = pStreamContext->ForceSpeaker((BOOL)dwParam1);
}
else
{
dwRet = g_pHWContext->ForceSpeaker((BOOL)dwParam1);
}
break;
}
case MM_MOM_MIDIMESSAGE:
{
CMidiStream *pMidiStream = (CMidiStream *)dwUser;
dwRet = pMidiStream->MidiMessage(dwParam1);
break;
}
// unsupported messages
case WODM_GETPITCH:
case WODM_SETPITCH:
case WODM_PREPARE:
case WODM_UNPREPARE:
case WIDM_PREPARE:
case WIDM_UNPREPARE:
dwRet = MMSYSERR_NOTSUPPORTED;
break;
default:
//
// Pass it on to the hardware driver in case it's a hardware-specific
// message.
//
dwRet = g_pHWContext->HandleDriverMessage( uDeviceId, uMsg, dwParam1, dwParam2 );
}
// This message can cause a performance loss so be careful using it.
// DEBUGMSG(ZONE_FUNCTION, (TEXT("-HandleWaveMessage\r\n")));
g_pHWContext->Unlock();
// Pass the return code back via pBufOut
if (pdwResult)
{
*pdwResult = dwRet;
}
return TRUE;
}
// -----------------------------------------------------------------------------
//
// @doc WDEV_EXT
//
// @func BOOL | WAV_IOControl | Device IO control routine
//
// @parm DWORD | dwOpenData | Value returned from WAV_Open call
//
// @parm DWORD | dwCode |
// IO control code for the function to be performed. WAV_IOControl only
// supports one IOCTL value (IOCTL_WAV_MESSAGE)
//
// @parm PBYTE | pBufIn |
// Pointer to the input parameter structure (<t MMDRV_MESSAGE_PARAMS>).
//
// @parm DWORD | dwLenIn |
// Size in bytes of input parameter structure (sizeof(<t MMDRV_MESSAGE_PARAMS>)).
//
// @parm PBYTE | pBufOut | Pointer to the return value (DWORD).
//
// @parm DWORD | dwLenOut | Size of the return value variable (sizeof(DWORD)).
//
// @parm PDWORD | pdwActualOut | Unused
//
// @rdesc Returns TRUE for success, FALSE for failure
//
// @xref <t Wave Input Driver Messages> (WIDM_XXX) <nl>
// <t Wave Output Driver Messages> (WODM_XXX)
//
// -----------------------------------------------------------------------------
BOOL WAV_IOControl( DWORD dwOpenData,
DWORD dwCode,
PBYTE pBufIn,
DWORD dwLenIn,
PBYTE pBufOut,
DWORD dwLenOut,
PDWORD pdwActualOut )
{
// check caller trust. if context hasn't been initialized, load from CeGetCallerTrust.
if (dwOpenData != OEM_CERTIFY_TRUST) {
if (OEM_CERTIFY_TRUST != (dwOpenData = CeGetCallerTrust())) {
PRINTMSG(ZONE_WARN, (TEXT("WAV_IoControl: untrusted process\r\n")));
SetLastError(ERROR_ACCESS_DENIED);
return FALSE;
}
}
_try
{
switch (dwCode)
{
case IOCTL_WAV_MESSAGE:
return HandleWaveMessage((PMMDRV_MESSAGE_PARAMS)pBufIn, (DWORD *)pBufOut);
// Power management functions.
case IOCTL_POWER_CAPABILITIES:
case IOCTL_POWER_QUERY:
case IOCTL_POWER_SET:
case IOCTL_POWER_GET:
return g_pHWContext->PmControlMessage( dwCode,
pBufIn,
dwLenIn,
pBufOut,
dwLenOut,
pdwActualOut
);
}
}
_except (GetExceptionCode() == STATUS_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
{
RETAILMSG(ZONE_ALWAYS, (TEXT("EXCEPTION IN WAV_IOControl!!!!\r\n")));
SetLastError(E_FAIL);
}
return FALSE;
}
//------------------------------- END OF FILE ----------------------------------
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