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/*
* 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:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution 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 Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
*/
package com.sun.j3d.loaders.objectfile;
import java.awt.Transparency;
import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.WritableRaster;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
class RgbFile extends BufferedInputStream {
// Header data
short dimension;
short xSize;
short ySize;
short zSize;
String filename;
private static final int DEBUG = 0;
short getShort() throws IOException {
int t1 = (short)read();
if (t1 == -1) throw new IOException("Unexpected EOF");
int t2 = (short)read();
if (t2 == -1) throw new IOException("Unexpected EOF");
return (short)((t1 << 8) | t2);
} // End of getShort()
byte getByte() throws IOException {
int t = read();
if (t == -1) throw new IOException("Unexpected EOF");
return (byte)t;
} // End of getByte
int getInt() throws IOException {
int ret = 0;
for (int i = 0 ; i < 4 ; i++) {
int t = read();
if (t == -1) throw new IOException("Unexpected EOF");
ret = (ret << 8) | t;
}
return ret;
} // end of getInt
public BufferedImage getImage() throws IOException {
short magic = getShort();
if (magic != 474) throw new IOException("Unrecognized file format.");
byte storage = getByte();
if (storage != 0)
throw new IOException("RLE Compressed files not supported");
byte bpc = getByte();
dimension = getShort();
xSize = getShort();
ySize = getShort();
zSize = getShort();
int pixMin = getInt();
int pixMax = getInt();
skip(84l);
int colorMap = getInt();
if ((DEBUG & 1) != 0) {
System.out.println(filename + ":");
System.out.println(" bpc = " + bpc);
System.out.println(" dimension = " + dimension);
System.out.println(" xSize = " + xSize);
System.out.println(" ySize = " + ySize);
System.out.println(" zSize = " + zSize);
System.out.println(" pixMin = " + pixMin);
System.out.println(" pixMax = " + pixMax);
System.out.println(" colorMap = " + colorMap);
}
if ((pixMin != 0) || (pixMax != 0xff) || (colorMap != 0) || (bpc != 1))
throw new IOException("Unsupported options in file");
skip(404l);
ComponentColorModel cm = null;
if (zSize == 1) {
// Black and White image
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
int[] nBits = {8};
cm = new ComponentColorModel(cs, nBits, false, false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
} else if (zSize == 2) {
// Black and White image with alpha
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
int[] nBits = {8, 8};
cm = new ComponentColorModel(cs, nBits, true, false,
Transparency.TRANSLUCENT,
DataBuffer.TYPE_BYTE);
} else if (zSize == 3) {
// RGB Image
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
int[] nBits = {8, 8, 8};
cm = new ComponentColorModel(cs, nBits, false, false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
} else if (zSize == 4) {
// RGBA Image
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
int[] nBits = {8, 8, 8, 8};
cm = new ComponentColorModel(cs, nBits, true, false,
Transparency.TRANSLUCENT,
DataBuffer.TYPE_BYTE);
} else {
throw new IOException("Unsupported options in file");
}
WritableRaster r = cm.createCompatibleWritableRaster(xSize, ySize);
BufferedImage bi = new BufferedImage(cm, r, false, null);
int t;
byte image[] = ((DataBufferByte)r.getDataBuffer()).getData();
for (short z = 0 ; z < zSize ; z++) {
for (int y = ySize - 1 ; y >= 0 ; y--) {
for (short x = 0 ; x < xSize ; x++) {
t = read();
if (t == -1) throw new IOException("Unexpected EOF");
image[y * (xSize * zSize) + (x * zSize) + z] = (byte)t;
}
}
}
return bi;
} // End of getImage
public RgbFile(InputStream s) {
super(s);
} // End of RgbFile(URL)
} // End of class RgbFile
// End of file RgbFile.java