// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

// INCLUDE FILES

#include "mmfdevsoundproxy.h"

#include "mmfdevsoundcallbackhandler.h"

// ============================ MEMBER FUNCTIONS ==============================

// ----------------------------------------------------------------------------

// CMsgQueueHandler::NewL

// Two-phased constructor.

// ----------------------------------------------------------------------------

//

CMsgQueueHandler* CMsgQueueHandler::NewL(

						RMMFDevSoundProxy* aDevSoundProxy,

						MDevSoundObserver& aDevSoundObserver,

						RMsgQueue<TMMFDevSoundQueueItem>* aMsgQueue,

						MMMFDevSoundCustomInterfaceObserver& aDevSoundCIObserver)

	{

	CMsgQueueHandler* self = new(ELeave) CMsgQueueHandler(aDevSoundProxy,

														aDevSoundObserver,

														aMsgQueue,

														aDevSoundCIObserver);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::CMsgQueueHandler

// C++ default constructor can NOT contain any code, that might leave.

// ----------------------------------------------------------------------------

//

CMsgQueueHandler::CMsgQueueHandler (RMMFDevSoundProxy* aDevSoundProxy,

									MDevSoundObserver& aDevSoundObserver,

									RMsgQueue<TMMFDevSoundQueueItem>* aMsgQueue,

									MMMFDevSoundCustomInterfaceObserver& aDevSoundCIObserver)

:	CActive(EPriorityStandard),

	iDevSoundProxy(aDevSoundProxy),

	iDevSoundObserver(aDevSoundObserver),

	iMsgQueue(aMsgQueue),

	iChunkDataPtr(0, 0, 0),

	iDevSoundCIObserver(aDevSoundCIObserver)

	{

	CActiveScheduler::Add(this);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::ConstructL

// Symbian 2nd phase constructor can leave.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::ConstructL()

	{

	iEmptyBuffer = CMMFDescriptorBuffer::NewL(0);

	iAsyncQueueFinish = new (ELeave) CAsyncCallBack(CActive::EPriorityStandard);

	TCallBack asyncCallback(AsyncQueueFinishCallback, this);

	iAsyncQueueFinish->Set(asyncCallback);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::~CMsgQueueHandler

// Destructor.

// ----------------------------------------------------------------------------

//

CMsgQueueHandler::~CMsgQueueHandler()

	{

	Cancel();

	if ( iMsgQueue )

		{

		iMsgQueue->Close();

		}

	iChunk.Close();

	delete iDataBuffer;

	delete iEmptyBuffer;

	delete iAsyncQueueFinish;

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::ReceiveEvents

// Subscribes for Play Error event from the DevSound server.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::ReceiveEvents()

	{

	if (!IsActive())

		{

		iMsgQueue->NotifyDataAvailable(iStatus);

		SetActive();

		}

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::RunL

// Handles active object’s request completion event.

//

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::RunL()

	{

	TInt err = iMsgQueue->Receive(iCurrentItem);

	if (err == KErrNone || err == KErrUnderflow)

		{

		// Signal that we're ready to process the next message

		ReceiveEvents();

		}

	if (err == KErrNone)

		{

		switch (iCurrentItem.iRequest)

			{

			case EMMFDevSoundProxyICEvent:

				{

				DoInitComplete();

				break;

				}

			case EMMFDevSoundProxyBTBFEvent:

				{

				iAsyncQueueFinish->Cancel(); // if still active, means previous cycle did not Finish(). Cancel.

				TRAP(err, DoBTBFCompleteL());

				if (err)

					{

					iAsyncQueueFinish->CallBack(); // async call to Finish()

					iDevSoundObserver.PlayError(err);

					}

				}

				break;

			case EMMFDevSoundProxyBTBEEvent:

				{

				iAsyncQueueFinish->Cancel(); // if still active, means previous cycle did not Finish(). Cancel.

				TRAP(err, DoBTBECompleteL());

				if (err)

					{

					iAsyncQueueFinish->CallBack(); // async call to Finish()

					iDevSoundObserver.RecordError(err);

					}

				}

				break;

			case EMMFDevSoundProxyPEEvent:

				{

				if (iCurrentItem.iErrorCode == KErrDied ||

					iCurrentItem.iErrorCode == KErrNotReady)

					{ 

					DoPlayErrorComplete();

					// "this" pointer is no longer valid here as the associated

					// instance of the DevSound has been deleted along with this

					// CMsgQueueHandler object. So, we can only return here.

					return;

					}

				else

					{

					DoPlayErrorComplete();

					break;

					}

				}

			case EMMFDevSoundProxyREEvent:

				{

				DoRecordErrorComplete();

				break;

				}

			case EMMFDevSoundProxyTFEvent:

				{

				DoToneFinishedComplete();

				break;

				}

			case EMMFDevSoundProxySETCEvent:

				{

				DoSendEventToClientComplete();

				break;

				}

			case EMMFDevSoundCustomCommandCloseMuxDemuxPair:

				{

				TMMFEvent pckgevent = iCurrentItem.iEventPckg();

				TInt handle = pckgevent.iEventType.iUid;

				iDevSoundCIObserver.CloseCustomInterface(handle);

				break;

				}

			case EMMFDevSoundProxyPausedRecordCompleteEvent:

				{

				DoPausedRecordComplete();

				break;

				}

			default:

				{

				break;

				}

			}

		}

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::RunError

// Called by CActive object framework if RunL leaves.

// ----------------------------------------------------------------------------

//

TInt CMsgQueueHandler::RunError(TInt aError)

	{

	TMMFEvent event;

	event.iErrorCode = aError;

	iDevSoundObserver.SendEventToClient(event);

	return KErrNone;

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoCancel

// Called when client cancels the wait for a completion of an outstanding

// request.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoCancel()

	{

	iMsgQueue->CancelDataAvailable();

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoInitComplete

// Handles initialization completion event.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoInitComplete()

	{

	iDevSoundObserver.InitializeComplete(iCurrentItem.iErrorCode);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoPlayErrorComplete

// Handles play completion or cancel event.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoPlayErrorComplete()

	{

	iAsyncQueueFinish->CallBack(); // async call to Finish()

	iDevSoundObserver.PlayError(iCurrentItem.iErrorCode);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoBTBFCompleteL

// Handles CMMFDevSound object's data request event to supply CMMFDevSound

// with the buffer that it needs to play.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoBTBFCompleteL()

	{

	// Returns either chunk handle or NULL

	// any error is assumed to be due to a pending PlayError(), so the error here is ignored - the PlayError() call will ensure the client remains lively

	// the chunk has been closed by the server. No action should be taken.

	TBool requestChunk = iDataBuffer==NULL; // if we have no buffer, tell server we need a chunk handle

	TInt handle = iDevSoundProxy->BufferToBeFilledData(requestChunk, iSetPckg);

	if(handle >= KErrNone)

		{

		if ( iSetPckg().iChunkOp == EOpen )

			{

			AssignDataBufferToChunkL(handle);

			}

		else

			{

			UpdateDataBufferL();

			}

		iDataBuffer->SetStatus(EAvailable);

		// Let the MMF fill the buffer with data

		iDevSoundObserver.BufferToBeFilled(iDataBuffer);

		}

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoBTBECompleteL

// Handles CMMFDevSound object's data request event to supply CMMFDevSound

// with the buffer that it needs to record.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoBTBECompleteL()

	{

	// Returns either chunk handle or NULL

	// any error is assumed to be due to a pending RecordError(), so the error here is ignored - the RecordError() call will ensure the client remains lively

	// the chunk has been closed by the server. No action should be taken.

	TInt handle = iDevSoundProxy->BufferToBeEmptiedData(iSetPckg);

	if(handle >= KErrNone)

		{

		if ( iSetPckg().iChunkOp == EOpen )

			{

			AssignDataBufferToChunkL(handle);

			}

		iDataBuffer->SetStatus(EFull);	

		iDataBuffer->Data().SetLength(iSetPckg().iRequestSize);

		iDevSoundObserver.BufferToBeEmptied(iDataBuffer);

		}

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoRecordErrorComplete

// Handles record completion or cancel event.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoRecordErrorComplete()

	{

	iAsyncQueueFinish->CallBack(); // async call to Finish()

	iDevSoundObserver.RecordError(iCurrentItem.iErrorCode);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoToneFinishedComplete

// Handles tone play completion event.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoToneFinishedComplete()

	{

	iDevSoundObserver.ToneFinished(iCurrentItem.iErrorCode);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoSendEventToClientComplete

// Sends DevSound server event completion notification to the client.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoSendEventToClientComplete()

	{

	iDevSoundObserver.SendEventToClient(iCurrentItem.iEventPckg());

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::DoPausedRecordComplete

// Handles CMMFDevSound object's data request event to supply CMMFDevSound

// with the last buffer that it needs to record.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::DoPausedRecordComplete()

	{

	ASSERT(iEmptyBuffer);

	iEmptyBuffer->SetLastBuffer(ETrue);

	iDevSoundObserver.BufferToBeEmptied(iEmptyBuffer);

	}

// ----------------------------------------------------------------------------

// CMsgQueueHandler::AssignDataBufferToChunkL

// Updates chunk handle.

// ----------------------------------------------------------------------------

//

void CMsgQueueHandler::AssignDataBufferToChunkL(TInt aHandle)

	{

	if ( iChunk.Handle() )

		{

		iChunk.Close();

		}

	User::LeaveIfError(iChunk.SetReturnedHandle(aHandle));

	// Adjust ptr to map only requested size

	// The existing clients should handle TPtr with length zero and max length

	// iSetPckg().iBufferSize.

	// When we make sure every client handles it, replace second parameter with

	// zero.

	//iChunkDataPtr.Set(iChunk.Base(), 0, iSetPckg().iBufferSize);

	iChunkDataPtr.Set(iChunk.Base(), iSetPckg().iBufferSize, iSetPckg().iBufferSize);

	if (!iDataBuffer)

		{

		iDataBuffer = CMMFPtrBuffer::NewL();	

		}

	UpdateDataBufferL(); 

	}

void CMsgQueueHandler::UpdateDataBufferL()

	{

	ASSERT(iDataBuffer); // to get here, we should have a data buffer

	iDataBuffer->SetPtr(iChunkDataPtr);

	iDataBuffer->SetRequestSizeL(iSetPckg().iRequestSize);

	iDataBuffer->SetLastBuffer(EFalse);	

	}

void CMsgQueueHandler::Finish()

	{

	if (iDataBuffer)

		{

		delete iDataBuffer;

		iDataBuffer = NULL;

		}

	if (iChunk.Handle())

		{

		iChunk.Close();

		}

	}

// 	AsyncQueueStartCallback

TInt CMsgQueueHandler::AsyncQueueFinishCallback(TAny* aPtr)

	{

	CMsgQueueHandler* self = static_cast<CMsgQueueHandler*>(aPtr);

	self->DoAsyncQueueFinishCallback();

	return KErrNone;

	}

void CMsgQueueHandler::DoAsyncQueueFinishCallback()

	{

	Finish();

	}

// End of File