video.neuquant
Class NeuquantCapture

java.lang.Object
  video.neuquant.NeuquantCapture

public class NeuquantCapture
extends java.lang.Object

Copyright DocJava, inc. User: lyon

Date: Nov 26, 2004

Time: 9:05:43 AM

Constructor Summary

NeuquantCapture()

Method Summary

static java.awt.image.BufferedImage	grabScreen(java.awt.Robot robot, java.awt.Rectangle rect)
static void	main(java.lang.String[] args)
static void	neuquantImageStreamToAFile(long delayBetweenFrames, int numberOfFrames, java.awt.Rectangle inputRect, java.awt.Dimension outputDim, AnimatedGifEncoder age, boolean isBuffered) Call this method to save images to a file, slowly, compressing as we go.
static void	neuquantImageStreamToAFile(NeuquantCaptureBean ncb)
static void	sleep(long d)
static void	streamScreenNeuquantImagesToAFile() This is very memory efficient, and, if it works fast enough, it should be ok for your application.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NeuquantCapture

public NeuquantCapture()

Method Detail

main

public static void main(java.lang.String[] args)

streamScreenNeuquantImagesToAFile

public static void streamScreenNeuquantImagesToAFile()

This is very memory efficient, and, if it works fast enough, it should be ok for your application. However, it is slow, for large images. Todo: build a nice interface, with a cool dialog Even though it is small in size, a rectangular area takes way too long to digitize in a stream. Generally around 3 or 4 seconds per image. Streaming generally results in an image that is 40k per image affineTransform 800x600. This is a 12:1 compression ratio. There is more work for the algorithm when the image changes more. A threaded stream for the output might be a good way to handle this.

neuquantImageStreamToAFile

public static void neuquantImageStreamToAFile(long delayBetweenFrames,
                                              int numberOfFrames,
                                              java.awt.Rectangle inputRect,
                                              java.awt.Dimension outputDim,
                                              AnimatedGifEncoder age,
                                              boolean isBuffered)
                                       throws java.awt.AWTException

Call this method to save images to a file, slowly, compressing as we go. It is typical for the process to take 13 seconds per frame on a 800 Mhz mac. Wow.

Parameters:

delayBetweenFrames - used on playback. Also, if the capture program actually takes less time than the delay, it will add the different to the sleep time between frames.

numberOfFrames - total number of frames to capture

inputRect - size of the capture area.

age - neuquant codec.

Throws:

java.awt.AWTException

neuquantImageStreamToAFile

public static void neuquantImageStreamToAFile(NeuquantCaptureBean ncb)
                                       throws java.awt.AWTException

Throws:

java.awt.AWTException

grabScreen

public static java.awt.image.BufferedImage grabScreen(java.awt.Robot robot,
                                                      java.awt.Rectangle rect)

sleep

public static void sleep(long d)

Parameters:

d - the number of seconds to sleep.