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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef _SV_OCTREE_HXX
#define _SV_OCTREE_HXX
#include <vcl/salbtype.hxx>
#include <vcl/dllapi.h>
// -----------
// - Defines -
// -----------
#define OCTREE_BITS 5
#define OCTREE_BITS_1 10
// --------------
// - OctreeNode -
// --------------
typedef struct OctreeNode
{
sal_uLong nCount;
sal_uLong nRed;
sal_uLong nGreen;
sal_uLong nBlue;
OctreeNode* pChild[ 8 ];
OctreeNode* pNext;
OctreeNode* pNextInCache;
sal_uInt16 nPalIndex;
sal_Bool bLeaf;
} NODE;
typedef NODE* PNODE;
typedef PNODE* PPNODE;
// ----------
// - Octree -
// ----------
class ImpNodeCache;
class BitmapReadAccess;
class VCL_PLUGIN_PUBLIC Octree
{
private:
BitmapPalette aPal;
sal_uLong nMax;
sal_uLong nLeafCount;
sal_uLong nLevel;
PNODE pTree;
PNODE pReduce[ OCTREE_BITS + 1 ];
BitmapColor* pColor;
ImpNodeCache* pNodeCache;
const BitmapReadAccess* pAcc;
sal_uInt16 nPalIndex;
Octree() {}
void CreatePalette( PNODE pNode );
void GetPalIndex( PNODE pNode );
SAL_DLLPRIVATE void ImplCreateOctree();
SAL_DLLPRIVATE void ImplDeleteOctree( PPNODE ppNode );
SAL_DLLPRIVATE void ImplAdd( PPNODE ppNode );
SAL_DLLPRIVATE void ImplReduce();
public:
Octree( const BitmapReadAccess& rReadAcc, sal_uLong nColors );
~Octree();
inline const BitmapPalette& GetPalette();
inline sal_uInt16 GetBestPaletteIndex( const BitmapColor& rColor );
};
// ------------------------------------------------------------------------
inline const BitmapPalette& Octree::GetPalette()
{
aPal.SetEntryCount( (sal_uInt16) nLeafCount );
nPalIndex = 0;
CreatePalette( pTree );
return aPal;
}
// ------------------------------------------------------------------------
inline sal_uInt16 Octree::GetBestPaletteIndex( const BitmapColor& rColor )
{
pColor = &(BitmapColor&) rColor;
nPalIndex = 65535;
nLevel = 0L;
GetPalIndex( pTree );
return nPalIndex;
}
// -------------------
// - InverseColorMap -
// -------------------
class VCL_PLUGIN_PUBLIC InverseColorMap
{
private:
sal_uInt8* pBuffer;
sal_uInt8* pMap;
const sal_uLong nBits;
SAL_DLLPRIVATE void ImplCreateBuffers( const sal_uLong nMax );
public:
explicit InverseColorMap( const BitmapPalette& rPal );
~InverseColorMap();
inline sal_uInt16 GetBestPaletteIndex( const BitmapColor& rColor );
};
// ------------------------------------------------------------------------
inline sal_uInt16 InverseColorMap::GetBestPaletteIndex( const BitmapColor& rColor )
{
return pMap[ ( ( (sal_uLong) rColor.GetRed() >> nBits ) << OCTREE_BITS_1 ) |
( ( (sal_uLong) rColor.GetGreen() >> nBits ) << OCTREE_BITS ) |
( (sal_uLong) rColor.GetBlue() >> nBits ) ];
}
#endif // _SV_OCTREE_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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