/*
* HaoRan ImageFilter Classes v0.1
* Copyright (C) 2012 Zhenjun Dai
*
* 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 2.1 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.
*/
package com.kaixin.android.filter;
/**
* ɫ�ɱ��Ͷ���Ч
* @author daizhj
*
*/
public class SaturationModifyFilter implements IImageFilter{
public float SaturationFactor = 0.5f;
//@Override
public Image process(Image imageIn) {
float saturation = this.SaturationFactor + 1f;
float negosaturation = 1f - saturation;
int r, g, b, a;
for (int x = 0; x < imageIn.getWidth(); x++) {
for (int y = 0; y < imageIn.getHeight(); y++) {
r = imageIn.getRComponent(x, y);
g = imageIn.getGComponent(x, y);
b = imageIn.getBComponent(x, y);
float nego1 = negosaturation * 0.2126f;
float ngeo2 = nego1 + saturation;
float ngeo3 = negosaturation * 0.7152f;
float nego4 = ngeo3 + saturation;
float nego5 = negosaturation * 0.0722f;
float nego6 = nego5 + saturation;
float nego7 = ((r * ngeo2) + (g * ngeo3)) + (b * nego5);
float nego8 = ((r * nego1) + (g * nego4)) + (b * nego5);
float nego9 = ((r * nego1) + (g * ngeo3)) + (b * nego6);
r = (nego7 > 255f) ? 255 : ((nego7 < 0f) ? 0 : ((int) nego7));
g = (nego8 > 255f) ? 255 : ((nego8 < 0f) ? 0 : ((int) nego8));
b = (nego9 > 255f) ? 255 : ((nego9 < 0f) ? 0 : ((int) nego9));
imageIn.setPixelColor(x,y,r,g,b);
}
}
return imageIn;
}
}