/*
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* $RCSfile: RgbFile.java,v $
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*
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* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistribution of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistribution in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* Neither the name of Sun Microsystems, Inc. or the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* This software is provided "AS IS," without a warranty of any
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* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
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* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
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* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
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* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
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* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
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* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
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* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
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* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
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* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
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* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* You acknowledge that this software is not designed, licensed or
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* intended for use in the design, construction, operation or
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* maintenance of any nuclear facility.
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*
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* $Revision: 1.4 $
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* $Date: 2007/02/09 17:20:10 $
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* $State: Exp $
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*/
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//package com.sun.j3d.loaders.objectfile;
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import java.io.BufferedInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileInputStream;
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import java.io.InputStream;
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import java.awt.image.BufferedImage;
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import java.io.IOException;
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import java.awt.image.DataBuffer;
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import java.awt.image.DataBufferByte;
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import java.awt.image.ComponentColorModel;
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import java.awt.image.WritableRaster;
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import java.awt.color.ColorSpace;
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import java.awt.Transparency;
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class RgbFile extends BufferedInputStream
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{
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// Header data
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short dimension;
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short xSize;
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short ySize;
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short zSize;
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String filename;
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private static final int DEBUG = 0;
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short getShort() throws IOException
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{
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int t1 = (short) read();
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if (t1 == -1)
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{
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throw new IOException("Unexpected EOF");
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}
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int t2 = (short) read();
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if (t2 == -1)
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{
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throw new IOException("Unexpected EOF");
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}
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return (short) ((t1 << 8) | t2);
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} // End of getShort()
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byte getByte() throws IOException
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{
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int t = read();
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if (t == -1)
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{
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throw new IOException("Unexpected EOF");
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}
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return (byte) t;
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} // End of getByte
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int getInt() throws IOException
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{
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int ret = 0;
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for (int i = 0; i < 4; i++)
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{
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int t = read();
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if (t == -1)
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{
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throw new IOException("Unexpected EOF");
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}
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ret = (ret << 8) | t;
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}
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return ret;
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} // end of getInt
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public BufferedImage getImage() throws IOException
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{
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short magic = getShort();
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if (magic != 474)
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{
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throw new IOException("Unrecognized file format.");
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}
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byte storage = getByte();
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if (storage != 0)
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{
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throw new IOException("RLE Compressed files not supported");
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}
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byte bpc = getByte();
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dimension = getShort();
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xSize = getShort();
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ySize = getShort();
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zSize = getShort();
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int pixMin = getInt();
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int pixMax = getInt();
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skip(84l);
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int colorMap = getInt();
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if ((DEBUG & 1) != 0)
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{
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System.out.println(filename + ":");
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System.out.println(" bpc = " + bpc);
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System.out.println(" dimension = " + dimension);
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System.out.println(" xSize = " + xSize);
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System.out.println(" ySize = " + ySize);
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System.out.println(" zSize = " + zSize);
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System.out.println(" pixMin = " + pixMin);
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System.out.println(" pixMax = " + pixMax);
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System.out.println(" colorMap = " + colorMap);
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}
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if ((pixMin != 0) || (pixMax != 0xff) || (colorMap != 0) || (bpc != 1))
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{
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throw new IOException("Unsupported options in file");
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}
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skip(404l);
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ComponentColorModel cm = null;
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if (zSize == 1)
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{
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// Black and White image
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ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
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int[] nBits = {8};
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cm = new ComponentColorModel(cs, nBits, false, false,
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Transparency.OPAQUE,
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DataBuffer.TYPE_BYTE);
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} else if (zSize == 2)
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{
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// Black and White image with alpha
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ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
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int[] nBits = {8, 8};
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cm = new ComponentColorModel(cs, nBits, true, false,
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Transparency.TRANSLUCENT,
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DataBuffer.TYPE_BYTE);
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} else if (zSize == 3)
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{
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// RGB Image
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ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
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int[] nBits = {8, 8, 8};
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cm = new ComponentColorModel(cs, nBits, false, false,
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Transparency.OPAQUE,
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DataBuffer.TYPE_BYTE);
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} else if (zSize == 4)
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{
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// RGBA Image
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ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
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int[] nBits = {8, 8, 8, 8};
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cm = new ComponentColorModel(cs, nBits, true, false,
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Transparency.TRANSLUCENT,
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DataBuffer.TYPE_BYTE);
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} else
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{
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throw new IOException("Unsupported options in file");
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}
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WritableRaster r = cm.createCompatibleWritableRaster(xSize, ySize);
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BufferedImage bi = new BufferedImage(cm, r, false, null);
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int t;
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byte image[] = ((DataBufferByte) r.getDataBuffer()).getData();
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for (short z = 0; z < zSize; z++)
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{
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for (int y = ySize - 1; y >= 0; y--)
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{
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for (short x = 0; x < xSize; x++)
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{
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t = read();
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if (t == -1)
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{
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throw new IOException("Unexpected EOF");
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}
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image[y * (xSize * zSize) + (x * zSize) + z] = (byte) t;
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}
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}
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}
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return bi;
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} // End of getImage
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public RgbFile(InputStream s)
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{
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super(s);
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} // End of RgbFile(URL)
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} // End of class RgbFile
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// End of file RgbFile.java
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