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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// PixelBufferImage is an PixelBuffer which also acts as an ImageProducer.
// Currently it only supports 8-bit colourmapped pixel format.
//
package com.tigervnc.vncviewer;
import java.awt.*;
import java.awt.image.*;
import java.nio.ByteOrder;
import javax.swing.JScrollPane;
import com.tigervnc.rfb.*;
public class PixelBufferImage extends PixelBuffer implements ImageProducer
{
public PixelBufferImage(int w, int h, CConn cc_, DesktopWindow desktop_) {
cc = cc_;
desktop = desktop_;
PixelFormat nativePF = getNativePF();
switch ((nativePF.depth > cc.serverPF.depth) ? cc.serverPF.depth : nativePF.depth) {
case 8:
setPF(new PixelFormat(8,8,false,true,7,7,3,0,3,6));
break;
case 16:
setPF(new PixelFormat(16,16,false,true,0xF800,0x07C0,0x003E,0,0,0));
break;
case 24:
setPF(new PixelFormat(32,24,false,true,0xff,0xff,0xff,16,8,0));
break;
default:
setPF(new PixelFormat(8,8,false,true,7,7,3,0,3,6));
vlog.debug("Unsupported native PF, defaulting to depth 8");
}
resize(w, h);
}
// resize() resizes the image, preserving the image data where possible.
public void resize(int w, int h) {
if (w == width() && h == height()) return;
int rowsToCopy = h < height() ? h : height();
int copyWidth = w < width() ? w : width();
int oldWidth = width();
int[] oldData = data;
width_ = w;
height_ = h;
image = desktop.createImage(this);
//image.setAccelerationPriority(1);
data = new int[width() * height()];
for (int i = 0; i < rowsToCopy; i++)
System.arraycopy(oldData, copyWidth * i,
data, width() * i, copyWidth);
}
private PixelFormat getNativePF() {
PixelFormat pf;
cm = java.awt.Toolkit.getDefaultToolkit().getColorModel();
if (cm.getColorSpace().getType() == java.awt.color.ColorSpace.TYPE_RGB) {
int depth = cm.getPixelSize();
int bpp = (depth > 16 ? 32 : (depth > 8 ? 16 : 8));
ByteOrder byteOrder = ByteOrder.nativeOrder();
boolean bigEndian = (byteOrder == ByteOrder.BIG_ENDIAN ? true : false);
boolean trueColour = (depth > 8 ? true : false);
int redShift = cm.getComponentSize()[0] + cm.getComponentSize()[1];
int greenShift = cm.getComponentSize()[0];
int blueShift = 0;
pf = new PixelFormat(bpp, depth, bigEndian, trueColour,
(depth > 8 ? 0xff : 0),
(depth > 8 ? 0xff : 0),
(depth > 8 ? 0xff : 0),
(depth > 8 ? redShift : 0),
(depth > 8 ? greenShift : 0),
(depth > 8 ? blueShift : 0));
} else {
pf = new PixelFormat(8, 8, false, false, 7, 7, 3, 0, 3, 6);
}
vlog.debug("Native pixel format is "+pf.print());
return pf;
}
// put() causes the given rectangle to be drawn using the given graphics
// context.
public void put(int x, int y, int w, int h, Graphics g) {
if (ic != null) {
ic.setPixels(x, y, w, h, cm, data, width() * y + x, width());
ic.imageComplete(ImageConsumer.SINGLEFRAMEDONE);
}
}
// fillRect(), imageRect(), maskRect() are inherited from PixelBuffer. For
// copyRect() we also need to tell the ImageConsumer that the pixels have
// changed (this is done in the put() call for the others).
public void copyRect(int x, int y, int w, int h, int srcX, int srcY) {
super.copyRect(x, y, w, h, srcX, srcY);
if (ic == null) return;
ic.setPixels(x, y, w, h, cm, data, width() * y + x, width());
ic.imageComplete(ImageConsumer.SINGLEFRAMEDONE);
}
// setColourMapEntries() changes some of the entries in the colourmap.
// However these settings won't take effect until updateColourMap() is
// called. This is because getting java to recalculate its internal
// translation table and redraw the screen is expensive.
public void setColourMapEntries(int firstColour, int nColours_,
int[] rgbs) {
nColours = nColours_;
reds = new byte[nColours];
blues = new byte[nColours];
greens = new byte[nColours];
for (int i = 0; i < nColours; i++) {
reds[firstColour+i] = (byte)(rgbs[i*3] >> 8);
greens[firstColour+i] = (byte)(rgbs[i*3+1] >> 8);
blues[firstColour+i] = (byte)(rgbs[i*3+2] >> 8);
}
}
// ImageProducer methods
public void updateColourMap() {
cm = new IndexColorModel(8, nColours, reds, greens, blues);
}
public void addConsumer(ImageConsumer c) {
if (ic == c) return;
vlog.debug("adding consumer "+c);
if (ic != null)
vlog.error("Only one ImageConsumer allowed - discarding old one");
ic = c;
ic.setDimensions(width(), height());
ic.setHints(ImageConsumer.RANDOMPIXELORDER);
// Calling ic.setColorModel(cm) seemed to help in some earlier versions of
// the JDK, but it shouldn't be necessary because we pass the ColorModel
// with each setPixels() call.
ic.setPixels(0, 0, width(), height(), cm, data, 0, width());
ic.imageComplete(ImageConsumer.SINGLEFRAMEDONE);
}
public void removeConsumer(ImageConsumer c) {
System.err.println("removeConsumer "+c);
if (ic == c) ic = null;
}
public boolean isConsumer(ImageConsumer c) { return ic == c; }
public void requestTopDownLeftRightResend(ImageConsumer c) {}
public void startProduction(ImageConsumer c) { addConsumer(c); }
Image image;
ImageConsumer ic;
int nColours;
byte[] reds;
byte[] greens;
byte[] blues;
CConn cc;
DesktopWindow desktop;
static LogWriter vlog = new LogWriter("PixelBufferImage");
}
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