C++ TMMFMessage类代码示例

// -----------------------------------------------------------------------------
// CRa8CustomInterfaceMsgHdlr::DoFrameNumberL
// Handles the message from the proxy and calls the custom interface method.
// The data passed from the proxy is read from the message and passed to
// the custom interface.
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
void CRa8CustomInterfaceMsgHdlr::DoFrameNumberL(TMMFMessage& aMessage)
    {
	TInt frame = iRa8CustomInterface->FrameNumber();
	TPckgBuf<TInt> pckg(frame);
	aMessage.WriteDataToClientL(pckg);
    aMessage.Complete(KErrNone);
    }

TBool CMidiCustomCommandParser::DoPercussionKeyNameL(TMMFMessage& aMessage)
	{
	TPckgBuf<TMMFMidiConfig2> pckg;
	aMessage.ReadData1FromClientL(pckg);

	// Prevent memory leaks by deleting old key name - something must have gone wrong in the client
	// if it already exists
	delete iPercussionKeyName;
	iPercussionKeyName = NULL;

	const TDesC& percussionKeyName = iImplementor.MmcPercussionKeyNameL(pckg().iNote, pckg().iBankId, pckg().iCustom, pckg().iInstrumentId);

	iPercussionKeyName = CBufFlat::NewL(32);
	RBufWriteStream stream;
	stream.Open(*iPercussionKeyName);
	CleanupClosePushL(stream);
	stream << percussionKeyName;
	CleanupStack::PopAndDestroy();//s

	// Write the size of the descriptor back to the client
	TPckgBuf<TInt> descriptorSizePckg(iPercussionKeyName->Ptr(0).Length());	
	aMessage.WriteDataToClientL(descriptorSizePckg);	
	
	return ETrue;
	}

// ---------------------------------------------------------
// CErrorConcealmentIntfcMsgHdlr::DoSetFrameModeL
// Handles the message from the proxy and calls the custom interface method.
// The data passed from the proxy is read from the message and passed to
// the custom interface.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CErrorConcealmentIntfcMsgHdlr::DoSetFrameModeL(TMMFMessage& aMessage)
    {
	TPckgBuf<TBool> pckg;
	aMessage.ReadData1FromClientL(pckg);
	TInt status = iErrorConcealmentIntfcCI->SetFrameMode(pckg());
    aMessage.Complete(status);
    }

// ---------------------------------------------------------
// CErrorConcealmentIntfcMsgHdlr::DoHandleRequestL
// Determines which custom interface to call.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CErrorConcealmentIntfcMsgHdlr::DoHandleRequestL(TMMFMessage& aMessage)
	{
	switch(aMessage.Function())
		{
		case EEcimConcealError:
			{
    		DoConcealErrorForNextBufferL(aMessage);
			break;
			}
		case EEcimSetFrameMode:
			{
    		DoSetFrameModeL(aMessage);
			break;
			}
		case EEcimFrameModeRqrd:
			{
    		DoFrameModeRqrdForEcL(aMessage);
			break;
			}
		default:
			{
			aMessage.Complete(KErrNotSupported);
			}
		}
	}

// ---------------------------------------------------------
// CListenerOrientationMessageHandler::DoObserveL
// Receives the observation request message and depending
// on the status of the effect data queue, the message is
// completed immediately or saved for later completion.
// ---------------------------------------------------------
//
void CListenerOrientationMessageHandler::DoObserveL(
	TMMFMessage& aMessage )
	{

#ifdef _DEBUG
    RDebug::Print(_L("CListenerOrientationMessageHandler::DoObserveL"));
#endif

	if ( !iRegistered ) // Don't register again if we're registered.
		{
		iListenerOrientation->RegisterObserverL(*this);
		iRegistered = ETrue;
		}

	if ( iEffectDataQue->IsEmpty() )
		{
		// Message is saved and completed when an event occurs
		iMessage = new(ELeave) TMMFMessage(aMessage);
		}
	else
		{
		TEfOrientationDataPckg dataPckg;
		CEffectDataQueItem* item = iEffectDataQue->First();
		dataPckg.Copy(item->EffectData());
		aMessage.WriteDataToClient(dataPckg);
		aMessage.Complete(KErrNone);
		iEffectDataQue->Remove(*item);
		delete item;
		}
	}

// ---------------------------------------------------------
// CListenerOrientationMessageHandler::DoHandleRequestL
// Dispatches the message to the appropriate handler.
// ---------------------------------------------------------
//
void CListenerOrientationMessageHandler::DoHandleRequestL(
	TMMFMessage& aMessage )
	{
	switch( aMessage.Function() )
		{
		case ELofInitialize: // Request to initialize the bassboost
			{
			DoInitializeL(aMessage);
			break;
			}
		case ELofApply: // Request to apply the bassboost settings
			{
			DoApplyL(aMessage);
			break;
			}
		case ELofObserve: // Observation request
			{
			DoObserveL(aMessage);
			break;
			}
		default:
			{
			aMessage.Complete(KErrNotSupported);
			}
		}
	}

// ---------------------------------------------------------
// CEnvironmentalReverbMessageHandler::DoObserveL
// Receives the observation request message and depending
// on the status of the effect data queue, the message is
// completed immediately or saved for later completion.
// ---------------------------------------------------------
//
void CEnvironmentalReverbMessageHandler::DoObserveL(
	TMMFMessage& aMessage )
	{

#ifdef _DEBUG
    RDebug::Print(_L("CEnvironmentalReverbMessageHandler::DoObserveL"));
#endif

	if ( !iRegistered )
		{
		iEnvironmentalReverb->RegisterObserverL(*this);
		iRegistered = ETrue;
		}

	if ( iEffectDataQue->IsEmpty() )
		{
		//iMessage = &aMessage;
		iMessage = new(ELeave) TMMFMessage(aMessage);
		}
	else
		{
		TEfEnvReverbDataPckg dataPckg;
		CEffectDataQueItem* item = iEffectDataQue->First();
		dataPckg.Copy(item->EffectData());
		aMessage.WriteDataToClient(dataPckg);
		aMessage.Complete(KErrNone);
		iEffectDataQue->Remove(*item);
		delete item;
		}
	}

// ---------------------------------------------------------
// CIlbcEncoderIntfcMsgHdlr::DoHandleRequestL
// Determines which custom interface to call.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CIlbcEncoderIntfcMsgHdlr::DoHandleRequestL(TMMFMessage& aMessage)
	{
	switch(aMessage.Function())
		{
		case EIlbceimSetEncoderMode:
			{
    		DoSetEncoderModeL(aMessage);
			break;
			}
		case EIlbceimSetVadMode:
			{
			DoSetVadModeL(aMessage);
			break;
			}
		case EIlbceimGetVadMode:
			{
			DoGetVadModeL(aMessage);
			break;
			}
		default:
			{
			aMessage.Complete(KErrNotSupported);
			}
		}
	}

// ---------------------------------------------------------
// CEnvironmentalReverbMessageHandler::DoHandleRequestL
// Dispatches the message to the appropriate handler.
// ---------------------------------------------------------
//
void CEnvironmentalReverbMessageHandler::DoHandleRequestL(
	TMMFMessage& aMessage )
	{
	switch( aMessage.Function() )
		{
		case EErfInitialize:
			{
			DoInitializeL(aMessage);
			break;
			}
		case EErfApply:
			{
			DoApplyL(aMessage);
			break;
			}
		case EErfObserve:
			{
			DoObserveL(aMessage);
			break;
			}
			
			
			
		default:
			{
			aMessage.Complete(KErrNotSupported);
			}
		}
	}

// ---------------------------------------------------------
// CIlbcEncoderIntfcMsgHdlr::DoSetVadModeL
// Handles the message from the proxy and calls the custom interface method.
// The data passed from the proxy is read from the message and passed to
// the custom interface.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CIlbcEncoderIntfcMsgHdlr::DoSetVadModeL(TMMFMessage& aMessage)
	{
	TPckgBuf<TBool> pckgBuf;
	aMessage.ReadData1FromClientL(pckgBuf);
	TInt status = iIlbcEncoderIntfcCI->SetVadMode(pckgBuf());
    aMessage.Complete(status);
	}

// ---------------------------------------------------------
// CAacDecoderConfigMsgHdlr::DoSetAudioConfigL
// Handles the message from the proxy and calls the custom interface method.
// (other items were commented in a header).
// ---------------------------------------------------------
//
void CAacDecoderConfigMsgHdlr::DoSetAudioConfigL(TMMFMessage& aMessage)
    {
	TPckgBuf<TAudioConfig> pckg;
	aMessage.ReadData1FromClientL(pckg);
	TInt status = iAacDecoderConfigCI->SetAudioConfig(pckg());
    aMessage.Complete(status);
    }

// ---------------------------------------------------------
// CEnvironmentalReverbMessageHandler::DoInitializeL
// ---------------------------------------------------------
//
void CEnvironmentalReverbMessageHandler::DoInitializeL(TMMFMessage& aMessage)
	{
#ifdef _DEBUG
    RDebug::Print(_L("CEnvironmentalReverbMessageHandler::DoInitializeL"));
#endif
	aMessage.WriteDataToClient(iEnvironmentalReverb->DoEffectData());
	aMessage.Complete(KErrNone);
	}

// Handles a request from the client. Called by the controller framework.
void CStreamControlCustomCommandParser::HandleRequest( TMMFMessage& aMessage )
    {
    TInt status = KErrNotSupported;
    if ( aMessage.Destination().InterfaceId() == KUidIFStreamControlCustomCommands )
        {
        status = DoHandleRequest( aMessage );
        }
    aMessage.Complete(status);
    }

// ---------------------------------------------------------
// CAacDecoderConfigMsgHdlr::HandleRequest
// Handles the messages from the proxy.
// Calls a subfunction which determines which custom interface to call.
// A subfunction is used to contain multiple leaving functions for a single
// trap.
// (other items were commented in a header).
// ---------------------------------------------------------
//
EXPORT_C void CAacDecoderConfigMsgHdlr::HandleRequest(TMMFMessage& aMessage)
	{
	ASSERT(aMessage.Destination().InterfaceId() == KUidAacDecoderConfig);
	TRAPD(error,DoHandleRequestL(aMessage));
	if(error)
		{
		aMessage.Complete(error);
		}
	}

// -----------------------------------------------------------------------------
// CRa8CustomInterfaceMsgHdlr::HandleRequest
// Handles the messages from the proxy.
// Calls a subfunction which determines which custom interface to call.
// A subfunction is used to contain multiple leaving functions for a single
// trap.
// (other items were commented in a header).
// -----------------------------------------------------------------------------
//
EXPORT_C void CRa8CustomInterfaceMsgHdlr::HandleRequest(TMMFMessage& aMessage)
	{
	ASSERT(aMessage.Destination().InterfaceId() == KUidRa8DecHwDeviceCI);
	TRAPD(error,DoHandleRequestL(aMessage));
	if (error)
		{
		aMessage.Complete(error);
		}
	}