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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 _Pixel8_H_
#define _Pixel8_H_
#include "../api.h"
#include "Pixeldefs.h"
#include "Pixel32.h"
#include <stdlib.h>
namespace avg {
class AVG_API Pixel8
{
public:
Pixel8 ();
Pixel8 (unsigned char i);
void set (unsigned char i);
unsigned char get () const;
unsigned char getR () const;
unsigned char getG () const;
unsigned char getB () const;
void flipRB();
template<class SrcPixel>
Pixel8 operator = (const SrcPixel& Pix)
{
set ((Pix.getR()*54+Pix.getG()*183+Pix.getB()*19)/256);
return *this;
}
Pixel8 operator = (const Pixel8& Pix)
{
set (Pix.get());
return *this;
}
operator Pixel32 () const;
bool operator ==(const Pixel8&) const;
bool operator !=(const Pixel8&) const;
void operator +=(const Pixel8&);
void operator -=(const Pixel8&);
// Simple and fast 'distance' between two pixels. Just adds the
// distances between the color components and treats colors
// equally.
int boxDist (const Pixel8 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 Pixel8 Blend (int Factor, const Pixel8 Pix1,
const Pixel8 Pix2);
private:
unsigned char m_i;
};
inline Pixel8::Pixel8()
{
}
inline Pixel8::Pixel8(unsigned char i)
{
set (i);
}
inline void Pixel8::set(unsigned char i)
{
m_i = i;
}
inline unsigned char Pixel8::get() const
{
return m_i;
}
inline unsigned char Pixel8::getR() const
{
return m_i;
}
inline unsigned char Pixel8::getG() const
{
return m_i;
}
inline unsigned char Pixel8::getB() const
{
return m_i;
}
inline int Pixel8::boxDist (const Pixel8 Pix) const
{
return (abs ((int)get()-Pix.get()));
}
inline Pixel8 Pixel8::Blend (int Factor, const Pixel8 Pix1, const Pixel8 Pix2)
{
return Pixel8 ((Pix1.get()*Factor+Pix2.get()*(256-Factor))>>8);
}
inline Pixel8::operator Pixel32 () const
{
return Pixel32 (m_i, m_i, m_i, 255);
}
inline bool Pixel8::operator ==(const Pixel8& Pix) const
{
return (get() == Pix.get());
}
inline bool Pixel8::operator !=(const Pixel8& Pix) const
{
return (!(*this == Pix));
}
inline void Pixel8::operator += (const Pixel8& Pix)
{
m_i += Pix.m_i;
}
inline void Pixel8::operator -= (const Pixel8& Pix)
{
m_i -= Pix.m_i;
}
}
#endif
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