Data Buffer Grabber
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
import java.awt.image.Raster;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
/*
* DataBufferGrabber.java
*
* Created on May 2, 2007, 7:51 AM
*
* Copyright (c) 2007, Sun Microsystems, Inc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the TimingFramework project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
*
* @author Chet
*/
public class DataBufferGrabber extends JComponent {
private final int SWATCH_SIZE = 500;
/** Creates a new instance of DataBufferGrabber */
public DataBufferGrabber() {
setPreferredSize(new Dimension(2 * SWATCH_SIZE, SWATCH_SIZE));
}
/**
* Perform and time several drawImage() calls with the given parameters
* and return the number of milliseconds that the operation took.
*/
private long copyImage(Graphics g, BufferedImage image, int x, int y) {
long startTime = System.nanoTime();
// Do the operation several times to make the timings more significant
for (int i = 0; i < 100; ++i) {
g.drawImage(image, x, y, null);
}
// Make sure any graphics commands in hardware get flushed before
// stopping the clock
Toolkit.getDefaultToolkit().sync();
long endTime = System.nanoTime();
return (endTime - startTime) / 1000000;
}
protected void paintComponent(Graphics g) {
// create an image
BufferedImage bImg = new BufferedImage(SWATCH_SIZE,
SWATCH_SIZE, BufferedImage.TYPE_INT_RGB);
Graphics gImage = bImg.getGraphics();
gImage.setColor(Color.WHITE);
gImage.fillRect(0, 0, SWATCH_SIZE, SWATCH_SIZE);
// Time how long it takes to copy the managed version
long managedTime = copyImage(g, bImg, 0, 0);
System.out.println("Managed: " + managedTime + " ms");
// Now grab the pixel array, change the colors, re-run the test
Raster raster = bImg.getRaster();
DataBufferInt dataBuffer = (DataBufferInt)raster.getDataBuffer();
int pixels[] = dataBuffer.getData();
for (int i = 0; i < pixels.length; ++i) {
// Make all pixels black
pixels[i] = 0;
}
// Time this un-managed copy
long unmanagedTime = copyImage(g, bImg, SWATCH_SIZE, 0);
System.out.println("Unmanaged: " + unmanagedTime + " ms");
}
private static void createAndShowGUI() {
JFrame f = new JFrame("DataBufferGrabber");
f.getContentPane().setLayout(new FlowLayout());
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(100, 100);
f.add(new DataBufferGrabber());
f.validate();
f.pack();
f.setVisible(true);
}
public static void main(String args[]) {
Runnable doCreateAndShowGUI = new Runnable() {
public void run() {
createAndShowGUI();
}
};
SwingUtilities.invokeLater(doCreateAndShowGUI);
}
}
Related examples in the same category
