sl@0: // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #include "mmfbtswcodecwrapper.h"
sl@0: #include "mmfBtSwCodecPlayDataPath.h"
sl@0: #include "mmfBtSwCodecRecordDataPath.h"
sl@0: #include "mmfBtSwCodecConvertDataPath.h"
sl@0: #include <mmfswcodecwrappercustominterfacesuids.hrh>
sl@0: #include "mmfBtswcodecwrapperCustomInterfaces.h"
sl@0: #include "MMFBtRoutingSoundDevice.h"
sl@0: #include <mmfpaniccodes.h>
sl@0: 
sl@0: 
sl@0: /*
sl@0:  *	AO to handle RSD initialisation
sl@0:  *
sl@0:  */
sl@0: CRoutingSoundDeviceOpenHandler* CRoutingSoundDeviceOpenHandler::NewL(CMMFSwCodecWrapper* aObserver)
sl@0: 	{
sl@0: 	CRoutingSoundDeviceOpenHandler* self = new(ELeave) CRoutingSoundDeviceOpenHandler(aObserver);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 	
sl@0: CRoutingSoundDeviceOpenHandler::~CRoutingSoundDeviceOpenHandler()
sl@0: 	{
sl@0: 	Cancel();
sl@0: 	}
sl@0: 		
sl@0: void CRoutingSoundDeviceOpenHandler::RunL()
sl@0: 	{
sl@0: 	TInt err = iStatus.Int();
sl@0: 	if (iObserver)
sl@0: 		{
sl@0: 		iObserver->OpenComplete(err);
sl@0: 		}
sl@0: 	}
sl@0: 	
sl@0: void CRoutingSoundDeviceOpenHandler::DoCancel()
sl@0: 	{
sl@0: 	if (iObserver)
sl@0: 		{
sl@0: 		iObserver->OpenComplete(KErrCancel);
sl@0: 		}
sl@0: 	}
sl@0: 	
sl@0: CRoutingSoundDeviceOpenHandler::CRoutingSoundDeviceOpenHandler(CMMFSwCodecWrapper* aObserver) :
sl@0: 															 	CActive(EPriorityStandard),
sl@0: 															 	iObserver(aObserver)								 	
sl@0: 														
sl@0: 	{
sl@0: 	CActiveScheduler::Add(this);	
sl@0: 	}
sl@0: 	
sl@0: void CRoutingSoundDeviceOpenHandler::ConstructL()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: void CRoutingSoundDeviceOpenHandler::Start()
sl@0: 	{
sl@0: 	if (!IsActive())
sl@0: 		{
sl@0: 		SetActive();
sl@0: 		}
sl@0: 	}
sl@0:  
sl@0: 
sl@0: /**
sl@0:  * Internal panic
sl@0:  * @internalComponent
sl@0:  */
sl@0: void Panic(TInt aPanicCode)
sl@0: 	{
sl@0: 	_LIT(KMMFSwCodecWrapperPanicCategory, "MMFSwCodecWrapper");
sl@0: 	User::Panic(KMMFSwCodecWrapperPanicCategory, aPanicCode);
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0:  * This method is not be exported as it is only 
sl@0:  * intended to be called within this DLL.
sl@0:  * It's purpose is to assign an CRoutingSoundPlayDevice to the play
sl@0:  * custom interface
sl@0:  * @internalComponent
sl@0:  */
sl@0: void TPlayCustomInterface::SetDevice(CRoutingSoundPlayDevice* aDevice)
sl@0: 	{
sl@0: 	iDevice = aDevice;
sl@0: 	}
sl@0: 
sl@0: void TPlayCustomInterface::SetVolume(TUint aVolume)
sl@0: 	{
sl@0: 	iVolume = aVolume;
sl@0: 	if (iDevice && iDevice->Handle())
sl@0: 		{
sl@0: 		iDevice->SetVolume(iVolume);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0:  * Procedure to get the number of bytes played by the device driver
sl@0:  * If there is no handle available to the device driver then the 
sl@0:  * procedure returns the last known value
sl@0:  * @prototype
sl@0:  * @return number of bytes played
sl@0:  */
sl@0: TUint TPlayCustomInterface::BytesPlayed()
sl@0: 	{
sl@0: 	if(iDevice)
sl@0: 		{
sl@0: 		if (iDevice->Handle())
sl@0: 			{
sl@0: 			iBytesPlayed = iDevice->BytesPlayed();
sl@0: 			}
sl@0: 		}
sl@0: 	return iBytesPlayed;
sl@0: 	}
sl@0: 	
sl@0: TTaskConfig TPlayCustomInterface::Caps()
sl@0: 	{
sl@0: 	TTaskConfig taskConfig;
sl@0: 	taskConfig.iRate = 0;
sl@0: 	taskConfig.iStereoMode = 0;
sl@0: 	taskConfig.iUid = KUidRefDevSoundTaskConfig;
sl@0: 	
sl@0: 	if (iDevice && iDevice->Handle())
sl@0: 		{
sl@0: 		RArray<TUint> supportedSampleRates;
sl@0: 		RArray<TRange>supportedRateRanges;
sl@0: 		iDevice->GetSupportedSampleRates(supportedSampleRates,supportedRateRanges);	
sl@0: 		for (TUint i=0; i<supportedSampleRates.Count(); i++)
sl@0: 			{
sl@0: 			switch(supportedSampleRates[i])
sl@0: 				{
sl@0: 				case 8000:
sl@0: 					taskConfig.iRate |= ETask8000Hz;
sl@0: 					break;
sl@0: 				case 11025:
sl@0: 					taskConfig.iRate |= ETask11025Hz;
sl@0:   					break;
sl@0: 				case 12000:
sl@0: 					taskConfig.iRate |= ETask12000Hz;
sl@0: 					break;
sl@0: 				case 16000:
sl@0: 					taskConfig.iRate |= ETask16000Hz;
sl@0: 					break;
sl@0: 				case 22050:
sl@0:   					taskConfig.iRate |= ETask22050Hz;
sl@0:   					break;
sl@0: 				case 24000:
sl@0:   					taskConfig.iRate |= ETask24000Hz;
sl@0:   					break;
sl@0: 				case 32000:
sl@0:   					taskConfig.iRate |= ETask32000Hz;
sl@0:   					break;
sl@0: 				case 44100:
sl@0: 					taskConfig.iRate |= ETask44100Hz;
sl@0:   					break;
sl@0: 				case 48000:
sl@0: 					taskConfig.iRate |= ETask48000Hz;
sl@0: 					break;
sl@0: 				case 88200:
sl@0: 					taskConfig.iRate |= ETask88200Hz;
sl@0: 					break;
sl@0: 				case 96000:
sl@0: 					taskConfig.iRate |= ETask96000Hz;
sl@0: 					break;
sl@0: 				default: //do nothing
sl@0: 					break;	
sl@0: 				}//	switch(supportedSampleRates[i])
sl@0: 			supportedSampleRates.Close();
sl@0: 			supportedRateRanges.Close();
sl@0: 			}//for (TUint i=0; i<supportedSampleRates.Count(); i++)
sl@0: 		RArray<TUint> supportedChannels;
sl@0: 		TMMFStereoSupport stereoSupport;
sl@0: 		iDevice->GetSupportedChannels(supportedChannels,stereoSupport);	
sl@0: 		for (TUint i=0; i<supportedChannels.Count(); i++)
sl@0: 			{//note we don't have a TaskConfig enum for Joint stereo
sl@0: 			switch(supportedChannels[i])
sl@0: 				{
sl@0: 				case EMMFMono:
sl@0: 					taskConfig.iStereoMode |= ETaskMono;
sl@0: 					break;
sl@0: 				case EMMFStereo:
sl@0: 					if (stereoSupport == EMMFInterleavedOnly)
sl@0: 						{
sl@0: 						taskConfig.iStereoMode |= ETaskInterleaved;
sl@0: 						}
sl@0: 					else if (stereoSupport == EMMFNonInterleavedOnly)
sl@0: 						{
sl@0: 						taskConfig.iStereoMode |= ETaskNonInterleaved;
sl@0: 						}
sl@0: 					else if (stereoSupport == EMMFBothNonAndInterleaved)
sl@0: 						{
sl@0: 						taskConfig.iStereoMode |= (ETaskInterleaved|ETaskNonInterleaved);
sl@0: 						}
sl@0: 					break;
sl@0: 				default://do nothing
sl@0: 					break;
sl@0: 				}//switch(supportedChannels[i])
sl@0: 			supportedChannels.Close();
sl@0: 			}//	for (TUint i=0; i<supportedChannels.Count(); i++)
sl@0: 		}//if (iDevice && iDevice->Handle())
sl@0: 	return taskConfig;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0:  * Procedure to get the number of bytes recorded by the device  
sl@0:  * @prototype
sl@0:  * @return number of bytes recorded
sl@0:  */
sl@0: TUint TRecordCustomInterface::BytesRecorded()
sl@0: 	{
sl@0: 	if(iDataPath)
sl@0: 		{
sl@0: 		iBytesRecorded = iDataPath->RecordedBytesCount();
sl@0: 		}
sl@0: 	return iBytesRecorded;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Constructor.
sl@0: */
sl@0: EXPORT_C CMMFSwCodecWrapper::CMMFSwCodecWrapper()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Destructor.
sl@0: 
sl@0: The destructor is called by ECom framework allowing derived classes
sl@0: to clean up implementation specific resources. The sound
sl@0: device drivers are freed.
sl@0: */
sl@0: EXPORT_C CMMFSwCodecWrapper::~CMMFSwCodecWrapper()
sl@0: 	{
sl@0: 	// AO to handle OpenDevice call
sl@0: 	if (iOpenHandler && iOpenHandler->IsActive())
sl@0: 		{
sl@0: 		iOpenHandler->Cancel();	
sl@0: 		}
sl@0: 	delete iOpenHandler;
sl@0: 	delete iRecordDevice;
sl@0: 	delete iPlayDevice;
sl@0: 	delete iDataPath;
sl@0: 	delete iCodec;
sl@0: 	delete iPlayCustomInterface;
sl@0: 	delete iRecordCustomInterface;
sl@0: 	}
sl@0: 	
sl@0: /**
sl@0: Initializes the hardware device tasks - in the case of a
sl@0: sw codec wrapper 'hardware device' this consists of loading the
sl@0: sound device drivers and creating the CMMFSwCodec.
sl@0: 
sl@0: @param  aDevInfo
sl@0:         Device initialization parameters.
sl@0:         Only the iHwDeviceObserver is used for CMFSwCodecWrapper
sl@0:         derived CMMFHwDevices.
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::Init(THwDeviceInitParams& aDevInfo)
sl@0: 	{
sl@0: 	TRequestStatus status;
sl@0: 	Init(aDevInfo,status);
sl@0: 	User::WaitForRequest(status);
sl@0: 	return status.Int();
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: Initializes the hardware device tasks - in the case of a
sl@0: sw codec wrapper 'hardware device' this consists of loading the
sl@0: sound device drivers and creating the CMMFSwCodec.
sl@0: 
sl@0: @param  aDevInfo
sl@0:         Device initialization parameters.
sl@0:         Only the iHwDeviceObserver is used for CMFSwCodecWrapper
sl@0:         derived CMMFHwDevices.
sl@0: @param	aStatus
sl@0: 		Status flag belonging to an Active Object that will have its
sl@0: 		RunL() called when this function completes
sl@0: */
sl@0: EXPORT_C void CMMFSwCodecWrapper::Init(	THwDeviceInitParams &aDevInfo,
sl@0: 										TRequestStatus& aStatus)
sl@0: 	{
sl@0: 	aStatus = KRequestPending;
sl@0: 	TRequestStatus* status = &aStatus;
sl@0: 	if (!aDevInfo.iHwDeviceObserver)
sl@0: 		{
sl@0: 		User::RequestComplete(status, KErrArgument);
sl@0: 		return;
sl@0: 		}
sl@0: 	iHwDeviceObserver = aDevInfo.iHwDeviceObserver;
sl@0: 
sl@0: 	TInt err = KErrNone;
sl@0: 	if (aDevInfo.iOutStream.iConnection.iId)
sl@0: 		{
sl@0: 		iDeviceUid = TUid::Uid(aDevInfo.iOutStream.iConnection.iId);
sl@0: 		// Play device
sl@0: 		delete iPlayDevice;
sl@0: 		iPlayDevice  = NULL;
sl@0: 		TRAP(err, iPlayDevice = CRoutingSoundPlayDevice::NewL());
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			iPlayDevice->Initialize(iDeviceUid,
sl@0: 									aDevInfo.iOutStream.iDeviceName, *status);
sl@0: 			if (!iPlayCustomInterface)
sl@0: 				{
sl@0: 				TRAP(err,iPlayCustomInterface = new(ELeave)TPlayCustomInterface());
sl@0: 				if (err)
sl@0: 					{
sl@0: 					delete iPlayDevice;
sl@0: 					iPlayDevice = NULL;
sl@0: 					User::RequestComplete(status, err);
sl@0: 					return;
sl@0: 					}
sl@0: 				}
sl@0: 			static_cast<TPlayCustomInterface*>(iPlayCustomInterface)->SetDevice(iPlayDevice);	
sl@0: 			}
sl@0: 		}
sl@0: 	if (aDevInfo.iInStream.iConnection.iId)
sl@0: 		{
sl@0: 		iDeviceUid = TUid::Uid(aDevInfo.iInStream.iConnection.iId);
sl@0: 			// Record device
sl@0: 		TRAP(err, iRecordDevice = CRoutingSoundRecordDevice::NewL());
sl@0: 		if (err == KErrNone)
sl@0: 			{
sl@0: 			iRecordDevice->Initialize(iDeviceUid, KNullDesC8, *status);
sl@0: 			if (!iRecordCustomInterface)
sl@0: 				{
sl@0: 				TRAP(err,iRecordCustomInterface = new(ELeave)TRecordCustomInterface());
sl@0: 				if (err)
sl@0: 					{
sl@0: 					delete iRecordDevice;
sl@0: 					iRecordDevice = NULL;
sl@0: 					User::RequestComplete(status, err);
sl@0: 					return;
sl@0: 					}
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	iCodec = &(Codec()); //create codec
sl@0: 		
sl@0: 	//[ assert the post condition ]
sl@0: 	if (!iCodec)
sl@0: 		{
sl@0: 		err = KErrNotSupported;
sl@0: 		}
sl@0: 
sl@0: 	if (err != KErrNone)
sl@0: 		{
sl@0: 		User::RequestComplete(status, err);
sl@0: 		// Cancel initialisation too
sl@0: 		if (aDevInfo.iOutStream.iConnection.iId)
sl@0: 			{
sl@0: 			iPlayDevice->CancelInitialize(iDeviceUid);
sl@0: 			}
sl@0: 		if (aDevInfo.iInStream.iConnection.iId)
sl@0: 			{
sl@0: 			iRecordDevice->CancelInitialize(iDeviceUid);
sl@0: 			}		
sl@0: 		}		
sl@0: 	else if ((!aDevInfo.iOutStream.iConnection.iId)&& (!aDevInfo.iInStream.iConnection.iId))
sl@0: 		{
sl@0: 		//could be used for conversion so complete the request status
sl@0: 		User::RequestComplete(status, KErrNone);
sl@0: 		}
sl@0: 		
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Starts Encoding or Decoding task(s) based on the parameter specified.
sl@0: 
sl@0: @param  aFuncCmd
sl@0:         The device function specifying the requested service i.e. decode or encode
sl@0:         where EDevEncode = Record, EDevDecode = Play and EDevNullFunc = Convert.
sl@0: @param  aFlowCmd
sl@0:         The device flow directions for requested service.
sl@0:         This parameter is ignored for CMMFSwCodecWrapper CMMFHwDevicePlugins
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::Start(TDeviceFunc aFuncCmd, TDeviceFlow /*aFlowCmd*/)
sl@0: 	{
sl@0: 	TInt error = KErrNone;
sl@0: 
sl@0: 	// [ precondition that aFuncCmd is valid]
sl@0: 	if (!((aFuncCmd == EDevEncode)|(aFuncCmd == EDevDecode)|(aFuncCmd == EDevNullFunc)))
sl@0: 		{
sl@0: 		return KErrArgument;
sl@0: 		}
sl@0: 
sl@0: 	// [ precondition that iCodec is present]
sl@0: 	if (!iCodec)
sl@0: 		{
sl@0: 		return KErrNotReady; //make sure the codec has been added
sl@0: 		}
sl@0: 
sl@0:     switch (aFuncCmd)
sl@0:         {
sl@0:         case EDevEncode: // Audio record
sl@0: 			{
sl@0: 			error = StartEncode();
sl@0: 			}
sl@0:             break;
sl@0:         case EDevDecode: // Audio play
sl@0: 			{
sl@0: 			error = StartDecode();
sl@0: 			}
sl@0:             break;
sl@0: 		case EDevNullFunc: //Audio Convert
sl@0: 			{
sl@0: 			error = StartConvert();
sl@0: 			}
sl@0: 			break;
sl@0:         default:
sl@0:             error = KErrNotSupported;
sl@0:             break;
sl@0: 		}
sl@0: 
sl@0: 	//[ assert the post conditions ]
sl@0: #ifdef DEBUG
sl@0: 	if (!error)
sl@0: 		{//only assert if no error otherwise post consitions not valid
sl@0: 		__ASSERT_DEBUG(iDataPath, Panic(EMMFSwCodecWrapperNoDataPath));
sl@0: 		if ((aFuncCmd == EDevEncode)||(aFuncCmd == EDevDecode))
sl@0: 			{
sl@0: 			__ASSERT_DEBUG(iDataPath->Device().Handle(), Panic(EMMFSwCodecWrapperNoDevice));
sl@0: 			}
sl@0: 		}
sl@0: #endif
sl@0: 
sl@0: 	return error;
sl@0: 	}
sl@0: 
sl@0: // Use AO to OpenDevice
sl@0: TInt CMMFSwCodecWrapper::StartDecode()
sl@0: 	{
sl@0: 	TInt error = KErrNone;
sl@0: 
sl@0: 	//[ assert precondition that play custom interface is present]
sl@0: 	//if there is no play custom interface then the user of the CMMFSwCodecWrapper
sl@0: 	//cannot have set any of the custom settings such as sample rate.
sl@0: 	if (!iPlayCustomInterface)
sl@0: 		{
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 
sl@0: 	//play
sl@0: 	if (!iDataPath)
sl@0: 		{//create a datapath
sl@0: 		TRAP(error,iDataPath = CMMFSwCodecPlayDataPath::NewL(iPlayDevice, iDeviceUid));
sl@0: 		if ((iDataPath) && (error == KErrNone))
sl@0: 			{
sl@0: 			iDataPath->SetObserver(*iHwDeviceObserver);
sl@0: 			error = iDataPath->AddCodec(*iCodec);
sl@0: 			iDeviceBufferSize = iCodec->SinkBufferSize();
sl@0: 			static_cast<CMMFSwCodecPlayDataPath*>(iDataPath)->SetPlayCustomInterface(*iPlayCustomInterface);
sl@0: 			static_cast<CMMFSwCodecPlayDataPath*>(iDataPath)->SetConfigForAudioRamp(iSampleRate, iChannels);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if ((error == KErrNone) &&
sl@0: 		(iDataPath->State() != CMMFSwCodecDataPath::EPlaying))
sl@0: 		{
sl@0: 		TBool asynchOpen = EFalse;	// Ensure we only call OpenPlayComplete once
sl@0: 		//datapath was created ok and we are not playing
sl@0: 		if (iDataPath->State() == CMMFSwCodecDataPath::EStopped)
sl@0: 			{
sl@0: 			//starting from 'fresh so set sound device settings
sl@0:   				
sl@0: 			// Create the AO OpenDevice handler
sl@0: 			if (!iOpenHandler)
sl@0: 				{
sl@0: 				TRAP(error, iOpenHandler = CRoutingSoundDeviceOpenHandler::NewL(this));				
sl@0: 				}
sl@0: 			if (!error)
sl@0: 				{
sl@0:  				asynchOpen = ETrue;
sl@0:  				iPlayDevice->SetBufferSize(iDeviceBufferSize);
sl@0: 				iOpenHandler->Start();
sl@0: 	 			static_cast<CMMFSwCodecPlayDataPath*>(iDataPath)->Device()->
sl@0:  										OpenDevice(iDeviceUid, iOpenHandler->iStatus);
sl@0: 				}
sl@0: 			}
sl@0: 		if (!asynchOpen)
sl@0: 			{
sl@0: 			error = OpenPlayComplete(error);
sl@0: 			}
sl@0: 
sl@0: 		}//status == KErrNone
sl@0: 
sl@0: 	return error;
sl@0: 	}
sl@0: 
sl@0: TInt CMMFSwCodecWrapper::StartEncode()
sl@0: 	{//record
sl@0: 
sl@0: 	//[ assert precondition that record custom interface is present]
sl@0: 	//if there is no record custom interface then the user of the CMMFSwCodecWrapper
sl@0: 	//cannot have set any of the custom settings such as sample rate.
sl@0: 	if (!iRecordCustomInterface)
sl@0: 		{
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 
sl@0: 	TInt error = KErrNone;
sl@0: 	if (!iDataPath)
sl@0: 		{
sl@0: 		TRAP(error,iDataPath = CMMFSwCodecRecordDataPath::NewL(iRecordDevice));
sl@0: 		if ((iDataPath)&&(error == KErrNone))
sl@0: 			{
sl@0: 			iDataPath->SetObserver(*iHwDeviceObserver);
sl@0: 			error = iDataPath->AddCodec(*iCodec);
sl@0: 			iDeviceBufferSize = (iCodec->SourceBufferSize());
sl@0: 			static_cast<TRecordCustomInterface*>(iRecordCustomInterface)->SetDataPath(static_cast<CMMFSwCodecRecordDataPath*>(iDataPath));
sl@0: 			}
sl@0: 		}
sl@0: 	if ((error == KErrNone)&&
sl@0: 		(iDataPath->State() != CMMFSwCodecDataPath::EPlaying))
sl@0: 		{
sl@0: 		TBool asynchOpen = EFalse;	// Ensure we only call OpenPlayComplete once
sl@0: 		if (!(static_cast<CMMFSwCodecRecordDataPath*>(iDataPath))->Device()->Handle())
sl@0:   			{
sl@0: 			// Create the AO OpenDevice handler
sl@0: 			if (!iOpenHandler)
sl@0: 				{
sl@0: 				TRAP(error, iOpenHandler = CRoutingSoundDeviceOpenHandler::NewL(this));				
sl@0: 				}
sl@0: 			if (!error)
sl@0: 				{
sl@0: 				asynchOpen = ETrue;
sl@0: 				iRecordDevice->SetBufferSize(iDeviceBufferSize);
sl@0: 				iOpenHandler->Start();
sl@0:  				static_cast<CMMFSwCodecRecordDataPath*>(iDataPath)->Device()->
sl@0: 									OpenDevice(iDeviceUid, iOpenHandler->iStatus);
sl@0: 				}
sl@0: 			}
sl@0: 			
sl@0: 		if (!asynchOpen)
sl@0: 			{
sl@0: 			error = OpenRecordComplete(error);
sl@0: 			}			
sl@0: 		}
sl@0: 
sl@0: 	return error;
sl@0: 	}
sl@0: 
sl@0: TInt CMMFSwCodecWrapper::StartConvert()
sl@0: 	{//convert
sl@0: 
sl@0: 	TInt error = KErrNone;
sl@0: 	if (!iDataPath)
sl@0: 		{
sl@0: 		TRAP(error,iDataPath = CMMFSwCodecConvertDataPath::NewL());
sl@0: 		if ((iDataPath)&&(error == KErrNone))
sl@0: 			{
sl@0: 			iDataPath->SetObserver(*iHwDeviceObserver);
sl@0: 			error = iDataPath->AddCodec(*iCodec);
sl@0: 			}
sl@0: 		}
sl@0:     if (error == KErrNone)
sl@0:     	{
sl@0: 		error = iDataPath->Start();
sl@0:     	}
sl@0: 	return error;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Temporarily suspends the current task of decoding or encoding.
sl@0: 
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::Pause()
sl@0: 	{
sl@0: 	// [ precondition that datapath exists ]
sl@0: 	if (!iDataPath)
sl@0: 		{
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 		
sl@0: 	iDataPath->Pause();
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Stops the current on-going task.
sl@0: 
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::Stop()
sl@0: 	{
sl@0: 	// [ precondition that datapath exists ]
sl@0: 	if (!iDataPath)
sl@0: 		{
sl@0: 		return KErrNotReady;
sl@0: 		}
sl@0: 	iDataPath->Stop();
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: Stops and deletes the codec.
sl@0: 
sl@0: This default implementation simply calls DeleteCodec() and then Stop()
sl@0: but real hardware devices might use this method to free up resources.
sl@0: 
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::StopAndDeleteCodec()
sl@0: 	{
sl@0: 	TInt stopError = Stop();
sl@0: 	TInt deleteError = DeleteCodec();
sl@0: 
sl@0: 	if (stopError != KErrNone)
sl@0: 		{
sl@0: 		return stopError;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		return deleteError;
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Deletes the codec
sl@0: This default implementation does nothing
sl@0: but real hardware devices might use this method to free up resources.
sl@0: @return		Error code. KErrNone if successful
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::DeleteCodec()
sl@0: 	{
sl@0: 	return KErrNone;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Call this function to notify hardware device implementation that
sl@0: data is available in aFillBufferPtr for decoding.
sl@0: 
sl@0: @param aFillBufferPtr
sl@0:        The data buffer filled by the observer.
sl@0: 
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::ThisHwBufferFilled(CMMFBuffer& aFillBufferPtr)
sl@0: 	{
sl@0: 	TRAPD(err,iDataPath->BufferFilledL(STATIC_CAST(CMMFDataBuffer&, aFillBufferPtr)));
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Call this function to notify hardware device implementation that
sl@0: data in aEmptyBufferPtr from encoding is processed.
sl@0: 
sl@0: @param  aBuffer
sl@0:         The data buffer processed by observer.
sl@0: 
sl@0: @return An error code indicating if the function call was successful. KErrNone on success, otherwise
sl@0:         another of the system-wide error codes.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::ThisHwBufferEmptied(CMMFBuffer& aBuffer)
sl@0: 	{
sl@0: 	TRAPD(err,iDataPath->BufferEmptiedL(STATIC_CAST(CMMFDataBuffer&, aBuffer)));
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: Retrieves a custom interface to the device.
sl@0: The reference CMMFSwCodecWrapper supports two standard custom interfaces,
sl@0: TPlayCustomInterface and TRecordCustomInterface.
sl@0: 
sl@0: @param	aInterface
sl@0: 		Interface UID, defined with the custom interface.
sl@0: 		aInterface = KMmfPlayCustomInterface for TPlayCustomInterface,
sl@0: 		aInterface = KMmfRecordCustomInterface for TRecordCustomInterface.
sl@0: 		Actual device implementations of CMMFSwCodecWrapper may do this differently however.
sl@0: @return A pointer to the interface implementation, or NULL if the device can not
sl@0: 		implement the interface requested. The return value must be cast to the
sl@0: 		correct type by the user.
sl@0: */
sl@0: EXPORT_C TAny* CMMFSwCodecWrapper::CustomInterface(TUid aInterface)
sl@0: 	{
sl@0: 	TAny* ret = NULL;
sl@0: 	TInt err = KErrNone;
sl@0: 	if (aInterface.iUid == KMmfPlaySettingsCustomInterface)
sl@0: 		{
sl@0: 		if (!iPlayCustomInterface)
sl@0: 			{
sl@0: 			TRAP(err,iPlayCustomInterface = new(ELeave)TPlayCustomInterface());
sl@0: 			}
sl@0: 		if (err)
sl@0: 			{
sl@0: 			ret = NULL;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			ret = static_cast<TAny*>(iPlayCustomInterface);
sl@0: 			}
sl@0: 		}
sl@0: 	else if (aInterface.iUid == KMmfRecordSettingsCustomInterface)
sl@0: 		{
sl@0: 		if (!iRecordCustomInterface)
sl@0: 			{
sl@0: 			TRAP(err,iRecordCustomInterface = new(ELeave)TRecordCustomInterface());
sl@0: 			}
sl@0: 		if (err)
sl@0: 			{
sl@0: 			ret = NULL;
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			ret = static_cast<TAny*>(iRecordCustomInterface);
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: /**
sl@0: Used to configure the sample rate and stereo mode of a CMMFHwDevice plugin.
sl@0: 
sl@0: The configuration of HwDevices is device specific and is not used in any of the reference
sl@0: devices that return KErrNotSupported.
sl@0: 
sl@0: @param  aConfig
sl@0:         The device configuration.
sl@0: */
sl@0: EXPORT_C TInt CMMFSwCodecWrapper::SetConfig(TTaskConfig& aConfig)
sl@0: 	{
sl@0: 	TInt err = KErrNone;
sl@0: 	if (aConfig.iUid != KUidRefDevSoundTaskConfig)
sl@0: 		return KErrArgument;
sl@0: 	iSampleRate = aConfig.iRate;//note we're cheating a bit
sl@0: 	//iRate is actually a bit map enum but an actual value
sl@0: 	//is more useful here
sl@0: 	TMMFStereoSupport stereoSupport = EMMFNone;
sl@0: 	if (aConfig.iStereoMode == ETaskMono)
sl@0: 		{
sl@0: 		iChannels = 1;
sl@0: 		}
sl@0: 	else if (aConfig.iStereoMode == ETaskInterleaved) 
sl@0: 		{
sl@0: 		iChannels = 2;
sl@0: 		stereoSupport = EMMFInterleavedOnly;
sl@0: 		}
sl@0: 	else //don't support non interleaved
sl@0: 		{
sl@0: 		return KErrNotSupported;
sl@0: 		}
sl@0: 		
sl@0: 	//set values on routing sound device
sl@0: 	if (iPlayDevice)
sl@0: 		{
sl@0: 		err = iPlayDevice->SetChannels(iChannels, stereoSupport);
sl@0: 		if (!err)
sl@0: 			{
sl@0: 			err = iPlayDevice->SetSampleRate(iSampleRate);
sl@0: 			}
sl@0: 		if (!err)
sl@0: 			{//we'll set the data type while were at it for now pcm16 only
sl@0: 			TFourCC fourCC = KMMFFourCCCodePCM16;
sl@0: 			err = iPlayDevice->SetDataType(fourCC);
sl@0: 			}
sl@0: 		}
sl@0: 	if ((iRecordDevice) && (!err))
sl@0: 		{
sl@0: 		err = iRecordDevice->SetChannels(iChannels, stereoSupport);
sl@0: 		if (!err)
sl@0: 			{
sl@0: 			err = iRecordDevice->SetSampleRate(iSampleRate);
sl@0: 			}
sl@0: 		}
sl@0: 	
sl@0: 	return err;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Callback once CRoutingSoundPlayDevice or CRoutingSoundRecordDevice::Open has completed or continuation from
sl@0: call to StartDecode / StartEncode, depending on the state.
sl@0: 
sl@0: @internalTechnology
sl@0: @param	aError
sl@0: 		The status of the device.
sl@0: @return A standard Symbian wide error code.
sl@0:  */
sl@0: TInt CMMFSwCodecWrapper::OpenComplete(TInt aError)
sl@0: 	{
sl@0: 	TInt err = KErrNotSupported;	//
sl@0: 	if (iPlayDevice)
sl@0: 		{
sl@0: 		err = OpenPlayComplete(aError);
sl@0: 		}
sl@0: 	else if (iRecordDevice)
sl@0: 		{
sl@0: 		err = OpenRecordComplete(aError);
sl@0: 		}
sl@0: 	return err;
sl@0: 	}
sl@0: 	
sl@0: /**
sl@0: Callback once CRoutingSoundPlayDevice::Open has completed or continuation from
sl@0: call to StartDecode, depending on the state.
sl@0: 
sl@0: @param	aError
sl@0: 		The status of the device.
sl@0: @return A standard Symbian wide error code.
sl@0:  */
sl@0: TInt CMMFSwCodecWrapper::OpenPlayComplete(TInt aError)
sl@0: 	{
sl@0: 	TInt error = aError;
sl@0: 	
sl@0: 	//datapath was created ok and we are not playing
sl@0: 	if (error == KErrNone && iDataPath->State() == CMMFSwCodecDataPath::EStopped)
sl@0: 		{
sl@0: 		//starting from fresh so set sound device settings
sl@0: //		static_cast<TPlayCustomInterface*>(iPlayCustomInterface)->SetDevice(
sl@0: //					static_cast<CMMFSwCodecPlayDataPath*>(iDataPath)->Device() );
sl@0: 		static_cast<CMMFSwCodecPlayDataPath*>(iDataPath)->Device()->SetVolume(iPlayCustomInterface->Volume());
sl@0: 		}
sl@0: 		
sl@0: 	// resuming from pause or ready to play
sl@0: 	if ((error == KErrNone) || (error == KErrInUse))
sl@0: 		{
sl@0: 		error = iDataPath->Start();
sl@0: 		}		
sl@0: 	
sl@0: 	return error;
sl@0: 	}
sl@0: 
sl@0: /**
sl@0: Callback once CRoutingSoundRecordDevice::Open has completed or continuation from
sl@0: call to StartDecode, depending on the state.
sl@0: 
sl@0: @param	aError
sl@0: 		The status of the device.
sl@0: @return A standard Symbian wide error code.
sl@0:  */
sl@0: TInt CMMFSwCodecWrapper::OpenRecordComplete(TInt aError)
sl@0: 	{
sl@0: 	TInt error = aError;
sl@0: 	
sl@0: 	//datapath was created ok and we are not playing
sl@0: 	if (error == KErrNone && iDataPath->State() == CMMFSwCodecDataPath::EStopped)
sl@0: 		{
sl@0: 		//set sound driver settings
sl@0: 		static_cast<CMMFSwCodecRecordDataPath*>(iDataPath)->Device()
sl@0: 												->SetGain(iRecordCustomInterface->Gain());
sl@0: 		/*
sl@0: 		// Sample rate
sl@0: 		(static_cast<CMMFSwCodecRecordDataPath*>(iDataPath))->Device()->SetSampleRate(iSampleRate);
sl@0: 		// Channels
sl@0: 		TMMFStereoSupport stereoSupport = EMMFNone;	// assume mono
sl@0: 		if (iChannels == 2)
sl@0: 			{
sl@0: 			// Assume interleaved only
sl@0: 			stereoSupport = EMMFInterleavedOnly;
sl@0: 			}
sl@0: 		error = (static_cast<CMMFSwCodecRecordDataPath*>(iDataPath))->Device()->SetChannels(iChannels, stereoSupport);
sl@0: 		*/
sl@0: 		}
sl@0: 
sl@0: 	// resuming from pause or ready to play
sl@0: 	if ((error == KErrNone) || (error == KErrInUse))
sl@0: 		{
sl@0: 		error = iDataPath->Start();
sl@0: 		}		
sl@0: 	
sl@0: 	return error;
sl@0: 	}