/*
* HaoRan ImageFilter Classes v0.3
* 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;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
import java.text.SimpleDateFormat;
import java.util.Date;
import android.util.Log;
public class ZoomBlurFilter implements IImageFilter{
int m_length;
double m_offset_x;
double m_offset_y;
int m_fcx, m_fcy;
final int RADIUS_LENGTH = 64;
public ZoomBlurFilter(int nLength)
{
this(nLength, 0.0f, 0.0f);
}
public ZoomBlurFilter(int nLength, double offset_x, double offset_y)
{
m_length = (nLength >= 1) ? nLength : 1 ;
m_offset_x = (offset_x > 2.0 ? 2.0 : ( offset_x< -2.0 ? 0 : offset_x));
m_offset_y =(offset_y > 2.0 ? 2.0 : ( offset_y< -2.0 ? 0 : offset_y));
}
//@Override
public Image process(Image imageIn) {
int width = imageIn.getWidth();
int height = imageIn.getHeight();
m_fcx = (int)(width * m_offset_x * 32768.0) + (width * 32768) ;
m_fcy = (int)(height * m_offset_y * 32768.0) + (height * 32768) ;
final int ta = 255;
Image clone = imageIn.clone();
for(int x = 0 ; x < width ; x++){
for(int y = 0 ; y < height ; y++){
int sr=0, sg=0, sb=0, sa=0;
sr = clone.getRComponent(x, y) * ta;
sg = clone.getGComponent(x, y) * ta;
sb = clone.getBComponent(x, y) * ta;
sa += ta;
int fx = (x * 65536) - m_fcx ;
int fy = (y * 65536) - m_fcy ;
for (int i = 0 ; i < RADIUS_LENGTH ; i++)
{
fx = fx - (fx / 16) * m_length / 1024 ;
fy = fy - (fy / 16) * m_length / 1024 ;
int u = (fx + m_fcx + 32768) / 65536 ;
int v = (fy + m_fcy + 32768) / 65536 ;
if (u>=0 && u<width && v>=0 && v<height)
{
sr += clone.getRComponent(u, v) * ta ;
sg += clone.getGComponent(u, v) * ta ;
sb += clone.getBComponent(u, v) * ta ;
sa += ta ;
}
}
imageIn.setPixelColor(x, y, Image.SAFECOLOR(sr/sa), Image.SAFECOLOR(sg/sa), Image.SAFECOLOR(sb/sa));
}
}
return imageIn;
}
}