/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "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:

* Ixonos Plc

*

* Description:  

*

*/

#ifndef _MP3AACMANIPLIB_H_

#define _MP3AACMANIPLIB_H_

#include "tool.h"

#include "sbr_codec.h"

/*

  Purpose:     AAC decoder core.

  Explanation: - 

    Implemented in aacaud.cpp

*/

class CAACAudDec : public CBase

{

public:

    static CAACAudDec* NewL(int16 aNumCh, int16 aNumCCh);

    ~CAACAudDec();

    void GetFIL(TBitStream *bs, uint32 prevEleID);

    int32 extension_payload(TBitStream *bs, int32 cnt, uint32 prevEleID);

    int16 numCh;

    int16 numCCh;

    int16 numOutCh;

    int16 samplesPerFrame;

    CToolInfo **tool;

    CMC_Info* mc_info;

    CCInfo **ccInfo;

    CWindowInfo **winInfo;

    /*-- Huffman tables. --*/

    Huffman_DecInfo **huf;

    Huffman_DecSfInfo *sf_huf;

    SbrBitStream *sbrStream;

    SBR_Decoder *sbrDecInfo;

private:

    void ConstructL(int16 aNumCh, int16 aNumCCh);

    CAACAudDec();

    TInt windowAmount;

};

/*

*    Methods for AAC gain manipulation -------------->

*/

/*-- Closes AAC decoder handle. --*/

IMPORT_C CAACAudDec *

DeleteAACAudDec(CAACAudDec *aac);

/*-- Creates AAC decoder handle. --*/

IMPORT_C void

CreateAACAudDecL(CAACAudDec*& aDecHandle, int16 numCh, int16 numCCh);

/*-- Creates (e)AAC+ decoder handle. --*/

IMPORT_C uint8

CreateAACPlusAudDecL(CAACAudDec *aDecHandle, int16 sampleRateIdx, uint8 isStereo, uint8 isDualMono);

/*-- Initializes AAC decoder handle. --*/

IMPORT_C void

InitAACAudDec(CAACAudDec *aac, int16 profile, int16 sampleRateIdx, uint8 is960);

/*-- Resets AAC decoder handle. --*/

IMPORT_C void

ResetAACAudDec(CAACAudDec *aac);

/*-- Counts AAC frame length (and parses the frame at same cost). --*/

IMPORT_C int16

CountAACChunkLength(TBitStream *bs, CAACAudDec *aac, int16 *bytesInFrame);

/*-- Stores global gain values. --*/

IMPORT_C void

SetAACGlobalGains(TBitStream* bs,

                  uint8 numGains, uint8 *globalGain, uint32 *globalGainPos);

IMPORT_C void

SetAACPlusGlobalGains(TBitStream* bs, TBitStream* bsOut, CAACAudDec *aac, int16 gainChangeValue,

                  uint8 numGains, uint8 *globalGain, uint32 *globalGainPos);

/*-- Extracts global gain values. --*/

IMPORT_C uint8

GetAACGlobalGains(TBitStream* bs, CAACAudDec *aac, uint8 nBufs, uint8 *globalGain, uint32 *globalGainPos);

/**

 *

 * Retrieves decoder specific information for the

 * specified AAC encoder configuration. This information should be

 * placed in the MP4/3GP header to describe the encoder

 * parameters for the AAC decoder at the receiving end.

 *

 * @param aacInfo     Handle to AAC configuration information

 * @param pBuf        Pointer to decoder specific information buffer

 * @param nBytesInBuf Size of 'pBuf'

 *

 * @return          Number of bytes in 'pBuf'

 */

IMPORT_C int16

AACGetMP4ConfigInfo(int32 sampleRate, uint8 profile, uint8 nChannels, int16 frameLen,

                    uint8 *pBuf, uint8 nBytesInBuf);

/*-- Checks whether parametric stereo enabled in the AAC bitstream. --*/

IMPORT_C uint8

IsAACParametricStereoEnabled(CAACAudDec *aac);

/*-- Checks whether SBR enabled in the AAC bitstream. --*/

IMPORT_C uint8

IsAACSBREnabled(CAACAudDec *aac);

/*

* <-------    Methods for AAC gain manipulation

*/

#endif