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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#ifndef _Pixel24_H_
#define _Pixel24_H_
#include "../api.h"
#include "Pixeldefs.h"
#include "Pixel32.h"
#include "Pixel8.h"
#include "../base/Exception.h"
#include <stdlib.h>
namespace avg {
class AVG_API Pixel24
{
public:
Pixel24 ();
Pixel24 (unsigned char r, unsigned char g, unsigned char b);
void set (unsigned char r, unsigned char g, unsigned char b);
void setR (unsigned char r);
void setG (unsigned char g);
void setB (unsigned char b);
unsigned char getR () const;
unsigned char getG () const;
unsigned char getB () const;
void flipRB();
template<class SrcPixel>
Pixel24 operator = (const SrcPixel& Pix)
{
setR (Pix.getR());
setG (Pix.getG());
setB (Pix.getB());
return *this;
}
Pixel24 operator = (const Pixel8& Pix)
{
m_Data[0] = Pix.get();
m_Data[1] = m_Data[0];
m_Data[2] = m_Data[0];
return *this;
}
operator Pixel32 () const;
bool operator ==(const Pixel24&) const;
bool operator !=(const Pixel24&) const;
void operator +=(const Pixel24&);
void operator -=(const Pixel24&);
// Simple and fast 'distance' between two pixels. Just adds the
// distances between the color components and treats colors
// equally.
int boxDist (const Pixel24 Pix) const;
// Returns a weighed average between two pixels. Factor must be
// between 0 and 256. Factor=256 means Pix1 is the result, Factor=0
// means Pix2 is the result.
static Pixel24 Blend (int Factor, const Pixel24 Pix1,
const Pixel24 Pix2);
private:
unsigned char m_Data[3];
};
inline Pixel24::Pixel24()
{
}
inline Pixel24::Pixel24(unsigned char r, unsigned char g, unsigned char b)
{
set (r, g, b);
}
inline void Pixel24::set(unsigned char r, unsigned char g, unsigned char b)
{
m_Data[REDPOS] = r;
m_Data[GREENPOS] = g;
m_Data[BLUEPOS] = b;
}
inline void Pixel24::setR(unsigned char r)
{
m_Data[REDPOS] = r;
}
inline void Pixel24::setG(unsigned char g)
{
m_Data[GREENPOS] = g;
}
inline void Pixel24::setB(unsigned char b)
{
m_Data[BLUEPOS] = b;
}
inline unsigned char Pixel24::getR() const
{
return m_Data[REDPOS];
}
inline unsigned char Pixel24::getG() const
{
return m_Data[GREENPOS];
}
inline unsigned char Pixel24::getB() const
{
return m_Data[BLUEPOS];
}
inline void Pixel24::flipRB()
{
unsigned char tmp = m_Data[BLUEPOS];
m_Data[BLUEPOS] = m_Data[REDPOS];
m_Data[REDPOS] = tmp;
}
inline int Pixel24::boxDist (const Pixel24 Pix) const
{
return (abs ((int)getR()-Pix.getR()) +
abs ((int)getG()-Pix.getG()) +
abs ((int)getB()-Pix.getB()));
}
inline Pixel24 Pixel24::Blend (int Factor, const Pixel24 Pix1, const Pixel24 Pix2)
{
AVG_ASSERT(Factor >= 0 && Factor <= 256);
return Pixel24 ((Pix1.getR()*Factor+Pix2.getR()*(256-Factor))>>8,
(Pix1.getG()*Factor+Pix2.getG()*(256-Factor))>>8,
(Pix1.getB()*Factor+Pix2.getB()*(256-Factor))>>8);
}
inline Pixel24::operator Pixel32 () const
{
return Pixel32 (getR(), getG(), getB(), 255);
}
inline bool Pixel24::operator ==(const Pixel24& Pix) const
{
return (getR() == Pix.getR() && getG() == Pix.getG() && getB() == Pix.getB());
}
inline bool Pixel24::operator !=(const Pixel24& Pix) const
{
return (!(*this == Pix));
}
inline void Pixel24::operator += (const Pixel24& Pix)
{
m_Data[0] += Pix.m_Data[0];
m_Data[1] += Pix.m_Data[1];
m_Data[2] += Pix.m_Data[2];
}
inline void Pixel24::operator -= (const Pixel24& Pix)
{
m_Data[0] -= Pix.m_Data[0];
m_Data[1] -= Pix.m_Data[1];
m_Data[2] -= Pix.m_Data[2];
}
}
#endif
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