/*

* Copyright (c) 2004 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:  The functions in this module implements the specific behavior

*                for the play controller decoder class for configuration of

*				 hardware accelerated codec.

*

*/

// INCLUDE FILES

#include "AACAudioPlayControllerDecoder.h"

#include "DebugMacros.h"

#include <Mmfcodec.h>

#include <mmfpaniccodes.h>

// New eAAC+ custom interface is used only when using DSP decoder and 

// the eAAC+ feature is turned on.

#ifdef __AAC_PLUS_DECODER_PLUGIN 

#include <EAacPlusDecoderIntfc.h>

#else

#include <AacDecoderConfig.h> 

#include <AudioConfig.h>	

#endif

#include <EAacPlusDecoderIntfc.h>

//#include "EAacPlusFrameParser.h"

// CONSTANT

const TUint KMaxAacFrameSize  = 1536;

const TUint KSizeOfInBuffer   = 2*KMaxAacFrameSize;

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

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

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

// might leave.

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

//

CAACAudioPlayControllerDecoder::CAACAudioPlayControllerDecoder()

    :   CAdvancedAudioDecoder(CActive::EPriorityStandard)

    {

    DP0(_L("CAACAudioPlayControllerDecoder::CAACAudioPlayControllerDecoder - Hardware Accelerated"));

    iMaxFrameSize = KMaxAacFrameSize;

   	iSizeOfInBuffer = KSizeOfInBuffer;

    }

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

// CAACAudioPlayControllerDecoder::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CAACAudioPlayControllerDecoder::ConstructL()

    {

    DP0(_L("CAACAudioPlayControllerDecoder::ConstructL"));

	iAacUtil = CEAacPlusUtil::NewL();

    iFrameTable = CFrameTable::NewL();

	RenderEnable();

	UnMarkPlayEnd();

	Enable();

    CActiveScheduler::Add(this);

    }

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

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

// might leave.

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

//

CAACAudioPlayControllerDecoder* CAACAudioPlayControllerDecoder::NewL()

    {

    DP0(_L("CAACAudioPlayControllerDecoder::NewL()"));

    CAACAudioPlayControllerDecoder* self = new(ELeave) CAACAudioPlayControllerDecoder();

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

// Destructor

CAACAudioPlayControllerDecoder::~CAACAudioPlayControllerDecoder()

	{

    DP0(_L("CAACAudioPlayControllerDecoder::~CAACAudioPlayControllerDecoder"));

	delete iAacUtil;

    delete iFrameTable;

	}

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

// CAACAudioPlayControllerDecoder::SetConfigL

// Sets configuration data and configures the codec.

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

//

TInt CAACAudioPlayControllerDecoder::CodecConfig(RArray<TInt>& aCodecConfigData)

	{

	DP0(_L("CAACAudioPlayControllerDecoder::SetConfigL"));

    TInt status = KErrNone;

   	aCodecConfigData[11] = reinterpret_cast<TInt>(iFrameTable);

   	iFormatType = (CEAacPlusUtil::TEAacPlusFormatType)(aCodecConfigData[12]);

	if (!iMMFDevSound)

		{

    	_LIT(KAudioPlayControllerDecoderPanicCategory, "AACAudioPlayControllerDecoder");

    	User::Panic(KAudioPlayControllerDecoderPanicCategory, EMMFAudioOutputDevSoundNotLoaded);

		}

#ifdef __AAC_PLUS_DECODER_PLUGIN

//uses new eAAC+ interface

	DP0(_L("CAACAudioPlayControllerDecoder::SetConfigL eAAC+ intfc"));

    CEAacPlusDecoderIntfc::TAudioObjectType objType(CEAacPlusDecoderIntfc::ENull);

    TInt count = aCodecConfigData.Count();

    ASSERT(count > 2);

    DP1(_L("CAACAudioPlayControllerDecoder::SetConfigL, aCodecConfigData[2] = %d"), aCodecConfigData[2]);

	switch (aCodecConfigData[2])

    	{

    	case 1:

    		objType = CEAacPlusDecoderIntfc::EAacLc;

    		break;

    	case 3:

    		objType = CEAacPlusDecoderIntfc::EAacLtp;

    		break;

    	default:

    		return status = KErrNotSupported;

    	}

    CEAacPlusDecoderIntfc* aacPlusDecCustomInterface(NULL);

	TRAP_IGNORE(aacPlusDecCustomInterface = CEAacPlusDecoderIntfc::NewL(*iMMFDevSound)); 

	if (!aacPlusDecCustomInterface)

		{

		DP0(_L("CAACAudioPlayControllerDecoder::SetConfigL eAAC+ intfc not supported"));

		return KErrNotSupported;

		}

    aacPlusDecCustomInterface->SetAudioObjectType(objType);

    aacPlusDecCustomInterface->SetInputSamplingFrequency(aCodecConfigData[5]);

    aacPlusDecCustomInterface->SetNumOfChannels(aCodecConfigData[1]);

    aacPlusDecCustomInterface->SetSbr(EFalse);

    aacPlusDecCustomInterface->SetDownSampledMode(EFalse);

    if (objType == CEAacPlusDecoderIntfc::EAacLc)

        {

        if ((aCodecConfigData[10] == 5) ||      //AAC + SBR

            (aCodecConfigData[10] == 6))        //AAC + SBR + PS

            {

            aacPlusDecCustomInterface->SetSbr(ETrue);

            }

        if ((aCodecConfigData[7] == 1) &&      //DSM

            ((aCodecConfigData[10] == 5) ||     //AAC + SBR

             (aCodecConfigData[10] == 6)))      //AAC + SBR + PS

            {

       	    aacPlusDecCustomInterface->SetDownSampledMode(ETrue);

            }

        }

    status = aacPlusDecCustomInterface->ApplyConfig();

   	delete aacPlusDecCustomInterface;

	DP1(_L("CAACAudioPlayControllerDecoder::SetConfigL, ApplyConfig status = %d"), status);

#else // __AAC_PLUS_DECODER_PLUGIN

//uses old AAC interface   

	DP0(_L("CAACAudioPlayControllerDecoder::SetConfigL AAC intfc"));

	TAudioConfig aacAudioConfig; // AAC Configuration structure

	// Profile Data is comming from AAC Codec

	// For That Codec... AAC Profile object type is Main=0; LC=1, SSR=2; LTP=3 (Based on Old AAC Codec)

	// Custom Interface Profile ENUMS are based on MPEG4 Audio Object Types which is

	// ENull=0;EAacMain=1;EAacLc=2;EAacSsr=3;EAacLtp=4;ESbr=5.. So the Codec Audio Object Type is

	// one off from MPEG4 Object Type.

    ASSERT(aCodecConfigData.Count() > 2);

    DP1(_L("CAACAudioPlayControllerDecoder::SetConfigL, aCodecConfigData[2] = %d"), aCodecConfigData[2]);

	switch (aCodecConfigData[2]) // So Map Old Object Type to the New MPEG4 Object Type

    	{

    	case 0: // Old Codec Object Type 0 (Main)

    		aacAudioConfig.iAudioObjectType = TAudioConfig::EAacMain;

    		break;

    	case 1:// Old Codec Object Type 1 (LC)

    		aacAudioConfig.iAudioObjectType = TAudioConfig::EAacLc;

    		break;

    	case 2:// Old Codec Object Type 2 (SSR)

    		aacAudioConfig.iAudioObjectType = TAudioConfig::EAacSsr;

    		break;

    	case 3:// Old Codec Object Type 3 (LTP)

    		aacAudioConfig.iAudioObjectType = TAudioConfig::EAacLtp;

    		break;

    	case 4:

    		aacAudioConfig.iAudioObjectType = TAudioConfig::ESbr;

    		break;

    	default:

	    	return status = KErrNotSupported;

    	}

	CAacDecoderConfig* aacDecCustomInterface(NULL);// Creates a custom interface

	//Calls the custom on devsound Devsound will return the handle to the custom interface proxy

	TRAP(status, aacDecCustomInterface = CAacDecoderConfig::NewL(*iMMFDevSound)); 

	if (status != KErrNone)

	{

		return status;	

	}

	status = aacDecCustomInterface->SetAudioConfig(aacAudioConfig);

	delete aacDecCustomInterface; // We have the handle so we Delete the Custom Interface and Adptation should Not delete this

	DP1(_L("CAACAudioPlayControllerDecoder::SetConfigL SetAudioConfig, status = %d"), status);

#endif //__AAC_PLUS_DECODER_PLUGIN

    if (status != KErrNone)

        {

        return status;

        }

    // pass FrameTable Handle to CMMFCodec so that it can build the table

    aCodecConfigData[11] = reinterpret_cast<TInt>(iFrameTable);

	CEAacPlusUtil::TEAacPlusFormatType formatType = static_cast<CEAacPlusUtil::TEAacPlusFormatType>(aCodecConfigData[12]);

	TInt inSampFreq = aCodecConfigData[5];

	TInt outSampFreq = aCodecConfigData[9];

	TInt numSampPerFrame = aCodecConfigData[4];

//	CEAacPlusUtil::TEAacPlusFrameLenConfig iFrameLenConfig;

    iFrameLenConfig.iFormatType = formatType;

	iFrameLenConfig.iSamplingFrequency = inSampFreq;

	iFrameLenConfig.iObjectType = objType;

	iAacUtil->Config(iFrameLenConfig);

	if(inSampFreq!=outSampFreq) 

		 { 

		 numSampPerFrame =2*numSampPerFrame;

		 }

//	TInt sampFreq = ((RArray<TInt>&) aConfigData)[5];

//	TInt samplesPerFrame = ((RArray<TInt>&) aConfigData)[8];

//	iFrameTable->InitFrameTable(sampFreq, samplesPerFrame);

	iFrameTable->InitFrameTable(outSampFreq, numSampPerFrame);

	return status;

	}

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

// CAACAudioPlayControllerDecoder::IsHwAccelerated

// Always return true when no soft codec is used.

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

//

TBool CAACAudioPlayControllerDecoder::IsHwAccelerated()

	{

    DP0(_L ("CAACAudioPlayControllerDecoder::IsHwAccelerated true"));

	return ETrue;

	}

void CAACAudioPlayControllerDecoder::ResetL()

	{

    DP0(_L ("CAACAudioPlayControllerDecoder::Reset - Enter"));

	delete[] iOutBuffer;

   	delete[] iInBuffer;

   	iInBuffer = NULL;

   	iOutBuffer = NULL;

   	iInBufferCount = 0;

   	iOutBufferCount = 0;

   	iOutBufferPtr = NULL;

   	iOutFrameLength = KMaxAacFrameSize; // since data is not decoded

   	iInBuffer = new (ELeave) TUint8[KSizeOfInBuffer];

    iOutBuffer = new (ELeave) TUint8[iOutFrameLength];

    iOutBufferPtr = iOutBuffer;

    iAccLen = 0;

	iAacUtil->Config(iFrameLenConfig);

	iEnabled = ETrue;

    DP0(_L ("CAACAudioPlayControllerDecoder::Reset - Exit"));

	}

TCodecProcessResult CAACAudioPlayControllerDecoder::ProcessL(CMMFBuffer& aSrc, CMMFBuffer& aDst)

	{

    DP0(_L ("CAACAudioPlayControllerDecoder::ProcessL"));

	return CAdvancedAudioDecoder::ProcessHwL(aSrc, aDst);

	}

TInt CAACAudioPlayControllerDecoder::FrameLength(const TUint8* aBuf, TInt aBufLen, TInt& aFrameLength)

	{

	TInt stat;

	TInt frameLen;

	stat = iAacUtil->GetAacFrameLength(aBuf, aBufLen, frameLen);

	aFrameLength = frameLen;

	return stat;

	}

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

// CAACAudioPlayControllerDecoder::SeekSync

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

TInt CAACAudioPlayControllerDecoder::SeekSync(TUint8* aBuf, TInt aBufLen)

	{ // should return aBufLen if not found

	DP0(_L("CAACAudioPlayControllerDecoder::SeekSync"));

	TInt syncPos = aBufLen;

	if (iFormatType == 2) // ADTS=2

		{

		syncPos = SeekAdtsSync(aBuf, aBufLen);

		}

	return syncPos;

	}

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

// CAACAudioPlayControllerDecoder::SeekAdtsSync

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

TInt CAACAudioPlayControllerDecoder::SeekAdtsSync(TUint8* aBuf, TInt aBufLen)

	{ // should return aBufLen if not found

	DP0(_L("CMMFeAacPlusTo16PcmCodec::SeekSync"));

    const TInt KNotFound = aBufLen;     // sync not found position

    TInt syncPos = KNotFound;

    TInt seekLen = 0;

    while (seekLen < aBufLen)

	    {

		if (IsValidAdtsFrame(aBuf+seekLen, aBufLen-seekLen))

			{

	        syncPos = seekLen;

			break;

			}

		seekLen++;	

    	}

    return syncPos;

	}

TBool CAACAudioPlayControllerDecoder::IsValidAdtsFrame(const TUint8* aPtr, TInt aBufLen)

    {

	DP0(_L("CAACAudioPlayControllerDecoder::IsValidAdtsFrame"));

	if (aBufLen < 6)

		{

		return EFalse;

		}

	if (((aPtr[0] == 0xFF) && ((aPtr[1] >> 4) == 0xF) &&    // Check syncword FFF

   	     ((aPtr[1] >> 1) & 0x3) == 0))                      // Check layer == 0

        {

   	    TInt frameLen = 0;

        frameLen = (aPtr[3] & 0x3) << 11;

   	    frameLen |= aPtr[4] << 3;

       	frameLen |= ((aPtr[5] >> 5) & 0x7);

        if (!frameLen || (frameLen > (aBufLen-4)))

   	       return EFalse;

        // Check next frame

        if (aBufLen - frameLen >= 2)

        	{

	   	    const TUint8* nextFramePtr = aPtr + frameLen;

		    if ((((nextFramePtr[0] == 0xFF) && ((nextFramePtr[1] >> 4) == 0xF)) && // Check syncword FFF

   	    	     ((nextFramePtr[1] >> 1) & 0x3) == 0)) // Check layer == 0

	            return ETrue;

        	}

   	    }

    return EFalse;

    }

TInt CAACAudioPlayControllerDecoder::CodecCmd(TCodecCmd /*aCmd*/)

	{

	return KErrNotSupported;

	}

// End of file