/*

* Copyright (c) 2003, 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:  CJ2kComponentInfo class used to collect component related

*                information such as precincts size at each resolution level and

*                list of subbands.

*

*/

// INCLUDE FILES

#include "JP2KTileInfo.h"

#include "JP2KImageInfo.h"

#include "JP2KSubband.h"

#include "JP2KComponentInfo.h"

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

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

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

// CJ2kComponentInfo::NewLC

// Two-phased constructor.

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

//

CJ2kComponentInfo* CJ2kComponentInfo::NewLC( CJ2kTileInfo& aTile, TUint16 aIndex )

    {

    CJ2kComponentInfo* self = new ( ELeave ) CJ2kComponentInfo;

    CleanupStack::PushL(self);

    self->ConstructL( aTile, aIndex );

    return self;

    }

// Destructor

CJ2kComponentInfo::~CJ2kComponentInfo()

    {

    delete iRootSubband;

    iRootSubband = 0;

    iPrecinctSizeList.Close();

    iGridList.Close();

    // iExponentList and iMantissaList are not owned by this object    

    }

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

// CJ2kComponentInfo::LRCPProgressionL

// At each component, parse the bitstream with LRCP progression order

// (other items were commented in a header).

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

//

TUint8 CJ2kComponentInfo::LRCPProgressionL( CJ2kTileInfo& aTile )

    {

    TUint8 incomplete = 0;

    if ( aTile.LastLevelProcessed() <= iNumOfLevels )

        {

        incomplete = iRootSubband->SubbandAt( aTile.LastLevelProcessed() )->LRCPProgressionL( aTile, *this );

        }

    return incomplete;

    }

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

// CJ2kComponentInfo::RPCLProgressionL

// At each component, parse the bitstream with RPCL progression order

// (other items were commented in a header).

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

//

TUint8 CJ2kComponentInfo::RPCLProgressionL( CJ2kTileInfo& aTile )

    {

    TUint8 incomplete = 0;

    TUint8 level = aTile.LastLevelProcessed();

    TUint8 diff = (TUint8)( iNumOfLevels - level );

    if ( level <= iNumOfLevels )

        {

        const TSizMarker& sizMarker = aTile.ImageInfo().SizMarker();

        if ( ( ( aTile.LastN1Processed() % (TInt)( sizMarker.iYRsiz[aTile.LastComponentProcessed()] * iGridList[level].iHeight ) == 0) ||

             ( ( aTile.LastN1Processed() == aTile.TileCanvas().iTl.iY ) && 

             ( ( try0 << diff) % iGridList[level].iHeight ) ) ) &&

             ( ( aTile.LastN2Processed() % (TInt)( sizMarker.iXRsiz[aTile.LastComponentProcessed()] * iGridList[level].iWidth ) == 0) ||

             ( ( aTile.LastN2Processed() == aTile.TileCanvas().iTl.iX ) && 

             ( ( trx0 << diff ) % iGridList[level].iWidth ) ) ) )

            {

            incomplete = iRootSubband->SubbandAt( level )->RPCLProgressionL( aTile, *this );

            }

        }

    return incomplete;

    }

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

// CJ2kComponentInfo::CPRLProgressionL

// At each component, parse the bitstream with CPRL progression order

// (other items were commented in a header).

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

//

TUint8 CJ2kComponentInfo::CPRLProgressionL( CJ2kTileInfo& aTile )

    {

    TUint8 incomplete = 0;

    TUint8 level = aTile.LastLevelProcessed();

    TUint8 diff = (TUint8)( iNumOfLevels - level );

    if (level <= iNumOfLevels)

        {

        const TSizMarker& sizMarker = aTile.ImageInfo().SizMarker();

        if ( ( ( aTile.LastN1Processed() % (TInt)( sizMarker.iYRsiz[aTile.LastComponentProcessed()] * iGridList[level].iHeight ) == 0 ) ||

           ( ( aTile.LastN1Processed() == aTile.TileCanvas().iTl.iY ) && 

           ( ( try0 << diff) % iGridList[level].iHeight ) ) ) &&

           ( ( aTile.LastN2Processed() % (TInt)( sizMarker.iXRsiz[aTile.LastComponentProcessed()] * iGridList[level].iWidth ) == 0 ) ||

           ( ( aTile.LastN2Processed() == aTile.TileCanvas().iTl.iX ) && 

           ( ( trx0 << diff) % iGridList[level].iWidth ) ) ) )

            {

            incomplete = iRootSubband->SubbandAt( level )->CPRLProgressionL( aTile, *this );

            }

        }

    return incomplete;

    }

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

// CJ2kComponentInfo::SubbandAt

// Get the subband at specific resolution level

// (other items were commented in a header).

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

//

const CJ2kSubband* CJ2kComponentInfo::SubbandAt( TUint8 aResLevel ) const

    {

    return ( iRootSubband ) ? iRootSubband->SubbandAt( aResLevel ) : 0;

    }

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

// CJ2kComponentInfo::NumOfPackets

// Get the number of packets at specific resolution level

// (other items were commented in a header).

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

//

TUint32 CJ2kComponentInfo::NumOfPackets( TUint8 aResLevel ) const

    {

    return (TUint32)( iPrecinctSizeList[aResLevel].iWidth * 

                      iPrecinctSizeList[aResLevel].iHeight );

    }

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

// CJ2kComponentInfo::Exponent

// Get the quantization exponnet value for transformation

// (other items were commented in a header).

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

//

TUint8 CJ2kComponentInfo::Exponent( TUint16 aIndex ) const

    {

    if ( iQc & 0x01 )

        {

        if ( aIndex > 0 )

            {

            return (TUint8)( ( *iExponentList)[0] - ( ( aIndex - 1 ) / 3 ) );

            }

        }

    return ( *iExponentList )[aIndex];

    }

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

// CJ2kComponentInfo::Mantissa

// Get the quantization mantissa value for transformation

// (other items were commented in a header).

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

//

TUint16 CJ2kComponentInfo::Mantissa( TUint16 aIndex ) const

    {

    if ( iQc & 0x01 )

        {

        if ( aIndex > 0 )

            {

            return ( *iMantissaList )[0];

            }

        }

    return ( *iMantissaList )[aIndex];

    }

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

// CJ2kComponentInfo::MagnitudeBits

// Get the magnitude bits

// (other items were commented in a header).

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

//

TUint8 CJ2kComponentInfo::MagnitudeBits( TUint16 aIndex ) const

    {

    return (TUint8)( NumGuard() + Exponent( aIndex ) - 1 );

    }

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

// CJ2kComponentInfo::ResetLastPacketProcessed

// Reset the last packet processed

// (other items were commented in a header).

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

//

void CJ2kComponentInfo::ResetLastPacketProcessed()

    {

    for ( TUint8 index = 0; index <= iNumOfLevels; ++index )

        {

        iRootSubband->SubbandAt( index )->ResetLastPacketProcessed();

        }

    }

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

// CJ2kComponentInfo::CJ2kComponentInfo

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

// might leave.

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

//

CJ2kComponentInfo::CJ2kComponentInfo() : 

    iPrecinctSizeList(4), 

    iGridList(4)

    {

    }

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

// CJ2kComponentInfo::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CJ2kComponentInfo::ConstructL(  CJ2kTileInfo& aTile, TUint16 aIndex  )

    {

    CJ2kImageInfo& imageInfo = CONST_CAST( CJ2kImageInfo&, aTile.ImageInfo() );

    const TSizMarker& sizMarker = imageInfo.SizMarker();

    const TRect& tileCanvas = aTile.TileCanvas();

    if ( iComponentCanvas.Width(  ) <= 0 || iComponentCanvas.Height(  ) <= 0 )

        {

        // Empty may be caused by subsampled

        return;

        }

    // Tile part COD > main header COD

    TCODMarker *codMarker = aTile.TileMarker().iCod;

    if ( !codMarker )

        {

        codMarker = CONST_CAST( TCODMarker*, &imageInfo.MainMarker().iCod );

        }

    TCODMarker *cod = 0;

    TCOCMarker *coc = 0;

    // Tile part COC > tile part COD > main header COC > main header COD

    imageInfo.GetCodingStyle( cod, coc, aTile, aIndex );

    iNumOfLevels = ( coc ) ? coc->iNumOfLevels : cod->iNumOfLevels;

    iCodeBlockSiz = ( coc ) ? coc->iCodeBlockSiz : cod->iCodeBlockSiz;

    iCodeBlockStyle = ( coc ) ? coc->iCodeBlockStyle : cod->iCodeBlockStyle;

    iWaveletTransformation = ( coc ) ? coc->iWaveletTransformation : cod->iWaveletTransformation;

    HBufC8 *precinctSiz = ( coc ) ? coc->iPrecinctSiz : cod->iPrecinctSiz;

    iCod = ( coc ) ? (TUint8)( ( codMarker->iScod & 0xfe ) | ( coc->iScoc & 0x01 ) ): cod->iScod;

    TQCDMarker *qcd = 0;

    TQCCMarker *qcc = 0;

    // Tile part QCC > tile part QCD > main header QCC > main header QCD

    imageInfo.GetQuantization( qcd, qcc, aTile, aIndex );

    iQc = ( qcc ) ? qcc->iSqcc : qcd->iSqcd;

    iExponentList = ( qcc ) ? qcc->iExponent : qcd->iExponent;

    iMantissaList = ( qcc ) ? qcc->iMantissa : qcd->iMantissa;

    TRGNMarker *rgn = 0;

    // Tile part RGN > main header RGN

    imageInfo.GetRegion( rgn, aTile, aIndex );

    iRoiShift = ( rgn ) ? rgn->iSPrgn : (TUint8)0;

    TSize& maxBlock = CONST_CAST( TSize&, imageInfo.MaxBlockSize() );

    maxBlock.iWidth = Max( maxBlock.iWidth, iCodeBlockSiz.iWidth );

    maxBlock.iHeight = Max( maxBlock.iHeight, iCodeBlockSiz.iHeight );

    TSize precinct( 0,0 );

    TInt  trx0 = 0;

    TInt  trx1 = 0;

    TInt  try0 = 0;

    TInt  try1 = 0;

    TInt  denom = 0;

    TInt  ppx = 15;

    TInt  ppy = 15;

    for ( TUint8 index = 0; index <= iNumOfLevels; ++index )

        {

        // Resolution level at r = index

        if ( precinctSiz )

            {

            ppx = ( *precinctSiz )[index] & 0x0f;

            ppy = ( ( *precinctSiz )[index] & 0xf0 ) >> 4;

            }

        denom = 1 << ( iNumOfLevels - index );

        if ( trx1 > trx0 )

            {

            }

        else

            {

            precinct.iWidth = 0;

            }

        if ( try1 > try0 )

            {

            }

        else

            {

            precinct.iHeight = 0;

            }

        User::LeaveIfError( iPrecinctSizeList.Append( precinct ) );

        precinct.iWidth = 1 << ( ppx + iNumOfLevels - index );

        precinct.iHeight = 1 << ( ppy + iNumOfLevels - index );

        User::LeaveIfError( iGridList.Append( precinct ) );

        // Calculate the minimum grid

        if ( iMinGrid.iWidth == 0 || iMinGrid.iWidth > precinct.iWidth ) 

            {

            iMinGrid.iWidth = precinct.iWidth;

            }

        if ( iMinGrid.iHeight == 0 || iMinGrid.iHeight > precinct.iHeight )

            {

            iMinGrid.iHeight = precinct.iHeight;

            }

        }

    if ( imageInfo.Crop() )

        {

        const TRect& crop = imageInfo.CropArea();

        if ( !( crop.iTl.iX >= ( tileCanvas.iBr.iX - ( TInt )sizMarker.iXOsiz ) ||

                crop.iBr.iX <  ( tileCanvas.iTl.iX - ( TInt )sizMarker.iXOsiz ) ||

                crop.iTl.iY >= ( tileCanvas.iBr.iY - ( TInt )sizMarker.iYOsiz ) ||

                crop.iBr.iY <  ( tileCanvas.iTl.iY - ( TInt )sizMarker.iYOsiz ) ) )

            {

            imageInfo.SetTileMask( aTile.SotMarker().iIsot, ETrue );

            }

        else

            {

            // Current tile is not in the cropping area, 

            // just skip setting up the subbands and packets

            return;

            }

        }

    // Build the associated Subband root

    iRootSubband = CJ2kSubband::BuildSubbandTreeL( iNumOfLevels, *this );

    // Build the associated Packet classes

    iRootSubband->BuildPacketsL( *this, precinctSiz, codMarker->iNumOfLayers );

    }