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/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* Contributors: Amorilia (amorilia@gamebox.net)
*
* ***** END GPL LICENSE BLOCK *****
*/
/*
* This file is based on a similar file from the NVIDIA texture tools
* (http://nvidia-texture-tools.googlecode.com/)
*
* Original license from NVIDIA follows.
*/
// This code is in the public domain -- castanyo@yahoo.es
#ifndef _DDS_COLORBLOCK_H
#define _DDS_COLORBLOCK_H
#include <Color.h>
#include <Image.h>
/// Uncompressed 4x4 color block.
struct ColorBlock
{
ColorBlock();
ColorBlock(const uint * linearImage);
ColorBlock(const ColorBlock & block);
ColorBlock(const Image * img, uint x, uint y);
void init(const Image * img, uint x, uint y);
void swizzleDXT5n();
void splatX();
void splatY();
bool isSingleColor() const;
bool isSingleColorNoAlpha() const;
uint countUniqueColors() const;
Color32 averageColor() const;
bool hasAlpha() const;
void diameterRange(Color32 * start, Color32 * end) const;
void luminanceRange(Color32 * start, Color32 * end) const;
void boundsRange(Color32 * start, Color32 * end) const;
void boundsRangeAlpha(Color32 * start, Color32 * end) const;
void sortColorsByAbsoluteValue();
float volume() const;
// Accessors
const Color32 * colors() const;
Color32 color(uint i) const;
Color32 & color(uint i);
Color32 color(uint x, uint y) const;
Color32 & color(uint x, uint y);
private:
Color32 m_color[4*4];
};
/// Get pointer to block colors.
inline const Color32 * ColorBlock::colors() const
{
return m_color;
}
/// Get block color.
inline Color32 ColorBlock::color(uint i) const
{
return m_color[i];
}
/// Get block color.
inline Color32 & ColorBlock::color(uint i)
{
return m_color[i];
}
/// Get block color.
inline Color32 ColorBlock::color(uint x, uint y) const
{
return m_color[y * 4 + x];
}
/// Get block color.
inline Color32 & ColorBlock::color(uint x, uint y)
{
return m_color[y * 4 + x];
}
#endif // _DDS_COLORBLOCK_H
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