1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/mm/devsound/sounddevbt/src/swcodecwrapper/mmfBtSwCodecDataPath.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,131 @@
     1.4 +// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// source\server\MmfBtSwCodecDatapath.cpp
    1.18 +// 
    1.19 +//
    1.20 +
    1.21 +#include "mmfBtSwCodecDataPath.h"
    1.22 +
    1.23 +CMMFSwCodecDataPath::~CMMFSwCodecDataPath()
    1.24 +	{
    1.25 +	}
    1.26 +
    1.27 +/*
    1.28 + * CycleAudioBufferL
    1.29 + *
    1.30 + * Sets up a usable buffer for passing to MMF
    1.31 + *	
    1.32 + * This method has been written such that it must allocate a new buffer before
    1.33 + * replacing the existing one. The purpose of this is to force creation of a 
    1.34 + * new buffer. Simply deleting and then re-allocing may result in the same 
    1.35 + * address being used.
    1.36 + * 
    1.37 + * Only cycles if there is enough memory
    1.38 + *
    1.39 + */
    1.40 +#ifdef __CYCLE_MMF_DATABUFFERS__
    1.41 +CMMFDataBuffer* CMMFSwCodecDataPath::CycleAudioBuffer(CMMFDataBuffer* aBuffer)
    1.42 +	{
    1.43 +	CMMFDataBuffer* buffer = NULL;
    1.44 +	TUint bufferSize = aBuffer->Data().MaxLength();
    1.45 +
    1.46 +#ifdef __USE_MMF_TRANSFERBUFFERS__
    1.47 +	TRAPD(err, buffer = CreateTransferBufferL(bufferSize, static_cast<CMMFTransferBuffer*>(aBuffer)));
    1.48 +#else
    1.49 +	TRAPD(err,buffer = CMMFDataBuffer::NewL(bufferSize));
    1.50 +
    1.51 +	if (err == KErrNone)
    1.52 +		{
    1.53 +		delete aBuffer;
    1.54 +		}
    1.55 +#endif
    1.56 +	if (err != KErrNone)
    1.57 +		{//there was a problem creating buffer eg OOM so use same buffer
    1.58 +		buffer = aBuffer;
    1.59 +		}
    1.60 +
    1.61 +	return buffer;
    1.62 +
    1.63 +	}
    1.64 +#endif
    1.65 +
    1.66 +/*
    1.67 + * DoCleanupRHandleBase
    1.68 + *
    1.69 + * This method will initially Close the handle and then delete it.
    1.70 + *
    1.71 + */
    1.72 +#ifdef __USE_MMF_TRANSFERBUFFERS__
    1.73 +inline static void DoCleanupRHandleBase(TAny* aRHandleBase)
    1.74 +	{
    1.75 +	ASSERT(aRHandleBase);
    1.76 +	RHandleBase* rHandleBase = STATIC_CAST(RHandleBase*, aRHandleBase);
    1.77 +	TRAPD(error, rHandleBase->Close());
    1.78 +	delete aRHandleBase;
    1.79 +	}
    1.80 +
    1.81 +CMMFTransferBuffer* CMMFSwCodecDataPath::CreateTransferBufferL(TUint aBufferSize, CMMFTransferBuffer* aOldBuffer)
    1.82 +	{
    1.83 +	CMMFTransferBuffer* buffer = NULL;
    1.84 +
    1.85 +	RTransferBuffer* transBuffer = new  (ELeave) RTransferBuffer;
    1.86 +	
    1.87 +	TCleanupItem bufferCleanupItem(DoCleanupRHandleBase, transBuffer); //closes and deletes.
    1.88 +	CleanupStack::PushL(bufferCleanupItem);
    1.89 +
    1.90 +	RTransferWindow* transWindow = new (ELeave) RTransferWindow;
    1.91 +	
    1.92 +	TCleanupItem windowCleanupItem(DoCleanupRHandleBase, transWindow); //closes and deletes.
    1.93 +	CleanupStack::PushL(windowCleanupItem);
    1.94 +
    1.95 +	User::LeaveIfError(transBuffer->Create(aBufferSize));
    1.96 +	User::LeaveIfError(transWindow->Create(aBufferSize));
    1.97 +	User::LeaveIfError(transWindow->MapInBuffer(*transBuffer));
    1.98 +
    1.99 +	buffer = CMMFTransferBuffer::NewL(*transWindow);
   1.100 +
   1.101 +	delete aOldBuffer; //closes RTransferWindow
   1.102 +	delete iTransferWindow;
   1.103 +
   1.104 +	if(iTransferBuffer)
   1.105 +		{
   1.106 +		iTransferBuffer->Close();
   1.107 +		}
   1.108 +	delete iTransferBuffer;
   1.109 +
   1.110 +	iTransferBuffer = transBuffer;
   1.111 +	iTransferWindow = transWindow;
   1.112 +
   1.113 +	CleanupStack::Pop(transWindow); 
   1.114 +	CleanupStack::Pop(transBuffer); 
   1.115 +
   1.116 +	return buffer;
   1.117 +	}
   1.118 +#endif
   1.119 +
   1.120 +
   1.121 +#ifdef __USE_MMF_PTRBUFFERS__
   1.122 +CMMFPtrBuffer* CMMFSwCodecDataPath::CreatePtrBufferL(TUint aBufferSize)
   1.123 +	{
   1.124 +	CMMFPtrBuffer* buffer = NULL;
   1.125 +	if (iPtrBufferMemoryBlock)
   1.126 +		delete iPtrBufferMemoryBlock;//incase already exisits
   1.127 +	iPtrBufferMemoryBlock = HBufC8::NewL(aBufferSize);
   1.128 +	TPtr8 ptrMemoryBlock(iPtrBufferMemoryBlock->Des());
   1.129 +	buffer = CMMFPtrBuffer::NewL(ptrMemoryBlock);
   1.130 +	return buffer;
   1.131 +	}
   1.132 +#endif  // __USE_MMF_PTRBUFFERS__
   1.133 +
   1.134 +