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RGBTransforme.java
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RGBTransforme.java
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/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package rgbtrans;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.swing.*;
/**
*
* @author yuexiliu
*/
public class RGBtrans {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
String fileName = args[0];
int width = Integer.parseInt(args[1]);
int height = Integer.parseInt(args[2]);
BufferedImage img = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
try {
File file = new File(args[0]);
InputStream is = new FileInputStream(file);
long len = file.length();
byte[] bytes = new byte[(int) len];
int offset = 0;
int numRead = 0;
while (offset < bytes.length && (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
offset += numRead;
}
int ind = 0;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
byte a = 0;
byte r = bytes[ind];
byte g = bytes[ind + height * width];
byte b = bytes[ind + height * width * 2];
int pix = 0xff000000 | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff);
//int pix = ((a << 24) + (r << 16) + (g << 8) + b);
img.setRGB(x, y, pix);
ind++;
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// Use a label to display the image
JFrame frame = new JFrame();
JLabel label = new JLabel(new ImageIcon(img));
frame.getContentPane().add(label, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
}