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package com.tightvnc.decoder;
import com.tightvnc.decoder.common.Repaintable;
import com.tightvnc.vncviewer.RfbInputStream;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.image.ImageObserver;
import java.util.zip.Inflater;
//
// Class that used for decoding Tight encoded data.
//
public class TightDecoder extends RawDecoder {
//
// Tight decoder constants
//
final static int TightExplicitFilter = 0x04;
final static int TightFill = 0x08;
final static int TightJpeg = 0x09;
final static int TightMaxSubencoding = 0x09;
final static int TightFilterCopy = 0x00;
final static int TightFilterPalette = 0x01;
final static int TightFilterGradient = 0x02;
final static int TightMinToCompress = 12;
// Tight encoder's data.
final static int tightZlibBufferSize = 512;
public TightDecoder(Graphics g, RfbInputStream is) {
super(g, is);
tightInflaters = new Inflater[4];
}
public TightDecoder(Graphics g, RfbInputStream is, int frameBufferW,
int frameBufferH) {
super(g, is, frameBufferW, frameBufferH);
tightInflaters = new Inflater[4];
}
//
// Set and get methods for private TightDecoder
//
public void setRepainableControl(Repaintable r) {
repainatableControl = r;
}
//
// JPEG processing statistic methods
//
public int getNumJPEGRects() {
return statNumRectsTightJPEG;
}
public void setNumJPEGRects(int v) {
statNumRectsTightJPEG = v;
}
//
// Private members
//
private Inflater[] tightInflaters;
// Since JPEG images are loaded asynchronously, we have to remember
// their position in the framebuffer. Also, this jpegRect object is
// used for synchronization between the rfbThread and a JVM's thread
// which decodes and loads JPEG images.
private Rectangle jpegRect;
private Repaintable repainatableControl = null;
// Jpeg decoding statistics
private int statNumRectsTightJPEG = 0;
}
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