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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.
*/
//
// PixelBuffer - note that this code is only written for the 8, 16, and 32 bpp cases at the
// moment.
//
package com.tigervnc.rfb;
import java.awt.image.*;
public class PixelBuffer {
public PixelBuffer() {
setPF(new PixelFormat());
}
public void setPF(PixelFormat pf) {
if (!(pf.bpp == 32) && !(pf.bpp == 16) && !(pf.bpp == 8))
throw new Exception("Internal error: bpp must be 8, 16, or 32 in PixelBuffer ("+pf.bpp+")");
format = pf;
switch (pf.depth) {
case 8:
//cm = new IndexColorModel(8, 256, new byte[256], new byte[256], new byte[256]);
cm = new DirectColorModel(8, 7, (7 << 3), (3 << 6));
break;
case 16:
cm = new DirectColorModel(32, 0xF800, 0x07C0, 0x003E, (0xff << 24));
break;
case 24:
cm = new DirectColorModel(32, (0xff << 16), (0xff << 8), 0xff, (0xff << 24));
break;
}
}
public PixelFormat getPF() { return format; }
public final int width() { return width_; }
public final int height() { return height_; }
public final int area() { return width_ * height_; }
public void fillRect(int x, int y, int w, int h, int pix) {
for (int ry = y; ry < y + h; ry++)
for (int rx = x; rx < x + w; rx++)
data[ry * width_ + rx] = pix;
}
public void imageRect(int x, int y, int w, int h, int[] pix) {
for (int j = 0; j < h; j++)
System.arraycopy(pix, (w * j), data, width_ * (y + j) + x, w);
}
public void copyRect(int x, int y, int w, int h, int srcX, int srcY) {
int dest = (width_ * y) + x;
int src = (width_ * srcY) + srcX;
int inc = width_;
if (y > srcY) {
src += (h-1) * inc;
dest += (h-1) * inc;
inc = -inc;
}
int destEnd = dest + h * inc;
while (dest != destEnd) {
System.arraycopy(data, src, data, dest, w);
src += inc;
dest += inc;
}
}
public void maskRect(int x, int y, int w, int h, int[] pix, byte[] mask) {
int maskBytesPerRow = (w + 7) / 8;
for (int j = 0; j < h; j++) {
int cy = y + j;
if (cy < 0 || cy >= height_)
continue;
for (int i = 0; i < w; i++) {
int cx = x + i;
if (cx < 0 || cx >= width_)
continue;
int byte_ = j * maskBytesPerRow + i / 8;
int bit = 7 - i % 8;
if ((mask[byte_] & (1 << bit)) != 0)
data[cy * width_ + cx] = pix[j * w + i];
}
}
}
public int[] data;
public ColorModel cm;
protected PixelFormat format;
protected int width_, height_;
}
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