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package webcamstudio.sources.effects;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import javax.swing.JPanel;
import webcamstudio.sources.effects.controls.ContrastControl;
/**
*
* @author pballeux (modified by karl)
*/
public class Contrast extends Effect{
private final com.jhlabs.image.ContrastFilter filter = new com.jhlabs.image.ContrastFilter();
private final float ratio = 100f;
private float brightness = 100f/ratio;
private float contrast = 100f/ratio;
@Override
public void applyEffect(BufferedImage img) {
filter.setBrightness(brightness);
filter.setContrast(contrast);
Graphics2D buffer = img.createGraphics();
buffer.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
buffer.setRenderingHint(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_SPEED);
buffer.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
buffer.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
buffer.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
buffer.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.VALUE_COLOR_RENDER_SPEED);
buffer.setRenderingHint(RenderingHints.KEY_DITHERING,
RenderingHints.VALUE_DITHER_DISABLE);
BufferedImage temp = filter.filter(img, null);
buffer.setBackground(new java.awt.Color(0,0,0,0));
buffer.clearRect(0,0,img.getWidth(),img.getHeight());
buffer.drawImage(temp, 0, 0,null);
buffer.dispose();
}
@Override
public boolean needApply(){
return needApply=true;
}
@Override
public JPanel getControl() {
return new ContrastControl(this);
}
/**
* @return the brightness
*/
public int getBrightness() {
return (int)(brightness*ratio);
}
/**
* @param brightness the brightness to set
*/
public void setBrightness(int brightness) {
this.brightness = brightness/ratio;
}
/**
* @return the contrast
*/
public int getContrast() {
return (int)(contrast*ratio);
}
/**
* @param contrast the contrast to set
*/
public void setContrast(int contrast) {
this.contrast = contrast/ratio;
}
@Override
public void resetFX() {
// nothing here.
}
}