// Copyright (c) 2007-2009 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:

//

/**

 @file

 @internalComponent

*/

#include <mdf/mdfpuconfig.h>

#include <mmf/server/taskconfig.h>

#include <omxprocessingunit.h>

#include "vorbisencoderprocessingunit.h"

#include "vorbisencoderinputport.h"

#include "vorbisencoderoutputport.h"

const TInt KVorbisEncoderInputPortIndex = 0;

const TInt KVorbisEncoderOutputPortIndex = 1;

_LIT8(KVorbisEncoderILComponentName,"OMX.SYMBIAN.AUDIO.ENCODER.VORBIS");

// for the derivation of these constants see

// http://en.wikipedia.org/wiki/Vorbis

const TInt KVorbisQualityMinus1 = 4500;

const TInt KVorbisQuality0 = 6000;

const TInt KVorbisQuality1 = 80000;

const TInt KVorbisQuality2 = 96000;

const TInt KVorbisQuality3 = 110000;

const TInt KVorbisQuality4 = 128000;

const TInt KVorbisQuality5 = 160000;

const TInt KVorbisQuality6 = 192000;

const TInt KVorbisQuality7 = 224000;

const TInt KVorbisQuality8 = 256000;

const TInt KVorbisQuality9 = 320000;

const TInt KVorbisQuality10 = 500000;

CVorbisEncoderProcessingUnit::CVorbisEncoderProcessingUnit()

  : iVorbisEncoderInputPort(NULL),

    iVorbisEncoderOutputPort(NULL)

	{

	// input defaults (EPCM16)

	iInputBitsPerSample = 16;

	iNumInputType = OMX_NumericalDataSigned;		

	// no output defaults (EVorbis)

	}

CVorbisEncoderProcessingUnit* CVorbisEncoderProcessingUnit::NewL()

	{

	CVorbisEncoderProcessingUnit* self = new (ELeave) CVorbisEncoderProcessingUnit;

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

void CVorbisEncoderProcessingUnit::ConstructL()

	{

	// setup supported bit rates array

	iSupportedBitRates.Reset();

	iSupportedBitRates.AppendL(KVorbisQualityMinus1);

	iSupportedBitRates.AppendL(KVorbisQuality0);

	iSupportedBitRates.AppendL(KVorbisQuality1);

	iSupportedBitRates.AppendL(KVorbisQuality2);

	iSupportedBitRates.AppendL(KVorbisQuality3);

	iSupportedBitRates.AppendL(KVorbisQuality4);

	iSupportedBitRates.AppendL(KVorbisQuality5);

	iSupportedBitRates.AppendL(KVorbisQuality6);

	iSupportedBitRates.AppendL(KVorbisQuality7);

	iSupportedBitRates.AppendL(KVorbisQuality8);

	iSupportedBitRates.AppendL(KVorbisQuality9);

	iSupportedBitRates.AppendL(KVorbisQuality10);

	}

CVorbisEncoderProcessingUnit::~CVorbisEncoderProcessingUnit()

	{

	iSupportedBitRates.Reset();

	iSupportedBitRates.Close();

	delete iVorbisEncoderOutputPort;			

	delete iVorbisEncoderInputPort;	

	}

TInt CVorbisEncoderProcessingUnit::Create(const MMdfProcessingUnitObserver& aProcessingUnitObserver)

	{

	TRAPD(err, CreateL(aProcessingUnitObserver));

	return err;

	}

void CVorbisEncoderProcessingUnit::CreateL(const MMdfProcessingUnitObserver& aProcessingUnitObserver)

	{

	COmxProcessingUnit::ConstructL(KVorbisEncoderILComponentName, aProcessingUnitObserver);

	iVorbisEncoderInputPort  = CVorbisEncoderInputPort::NewL(KVorbisEncoderInputPortIndex, this);

	iVorbisEncoderOutputPort = CVorbisEncoderOutputPort::NewL(KVorbisEncoderOutputPortIndex, this);

	User::LeaveIfError(AddInputPort(iVorbisEncoderInputPort));

	User::LeaveIfError(AddOutputPort(iVorbisEncoderOutputPort));

	}

TInt CVorbisEncoderProcessingUnit::CreateCustomInterface(TUid aInterfaceId)

	{

	if (aInterfaceId == KUidCustomInterfaceDevSoundBitRate)

		{

		// There is no work to create this interface, so just return no error

		return KErrNone;

		}

	else

		{

		return KErrNotSupported;

		}

	}

TAny* CVorbisEncoderProcessingUnit::CustomInterface(TUid aInterfaceId)

	{

	// The vorbis encoder requires the custom interface for bitrates

	if (aInterfaceId == KUidCustomInterfaceDevSoundBitRate)

		{

		return static_cast<MMMFDevSoundCustomInterfaceBitRate*> (this);

		}

	else

		{

		return NULL;

		}

	}

/**

Gets the bit rates that are supported by DevSound in its current configuration.

@param  aSupportedBitRates

The supported bit rates, in bits per second, shall be appended to this array. Note that 

the array shall be reset by this method.

*/

void CVorbisEncoderProcessingUnit::GetSupportedBitRatesL(RArray<TInt>& aSupportedBitRates)

	{

	aSupportedBitRates.Reset();

	TInt c = iSupportedBitRates.Count();

	for(TInt i = 0; i < c; i++) 

		{

		aSupportedBitRates.AppendL(iSupportedBitRates[i]);

		}

 	}

TInt CVorbisEncoderProcessingUnit::BitRateL()

	{

	return iVorbisEncoderOutputPort->BitRate();

	}

void CVorbisEncoderProcessingUnit::SetBitRateL(TInt aBitRate)

	{

	// We can't strictly set the bit rate outside of calling

	// MopConfigure() on the output port.

	// However if we own the port we can call its SetBitRateL() method

	// which is not part of MMdfOutputPort.

	// set the bitrate to the nearest available, rounding down

	TInt c = iSupportedBitRates.Count();

	for(TInt i = c-1; i >= 0; i--) 

		{

		if(aBitRate >= iSupportedBitRates[i]) 

			{

			iVorbisEncoderOutputPort->SetBitRate(iSupportedBitRates[i]);

			return;

			}

		}

	User::Leave(KErrNotSupported);	

	}

// end