/*
 * @(#)ImageTypeSpecifier.java	1.35 05/11/17
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.imageio;

import java.awt.Point;
import java.awt.Transparency;
import java.awt.image.BandedSampleModel;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.color.ColorSpace;
import java.awt.image.IndexColorModel;
import java.awt.image.ComponentColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DirectColorModel;
import java.awt.image.MultiPixelPackedSampleModel;
import java.awt.image.PixelInterleavedSampleModel;
import java.awt.image.SinglePixelPackedSampleModel;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.awt.image.WritableRaster;
import java.util.Hashtable;

/**
 * A class that allows the format of an image (in particular, its
 * <code>SampleModel</code> and <code>ColorModel</code>) to be
 * specified in a convenient manner.
 *
 * @version 0.5
 */
public class ImageTypeSpecifier {

    /**
     * The <code>ColorModel</code> to be used as a prototype.
     */
    protected ColorModel colorModel;

    /**
     * A <code>SampleModel</code> to be used as a prototype.
     */
    protected SampleModel sampleModel;

    /**
     * Cached specifiers for all of the standard
     * <code>BufferedImage</code> types.
     */
    private static ImageTypeSpecifier[] BISpecifier;

    // Initialize the standard specifiers
    static {
        ColorSpace sRGB = ColorSpace.getInstance(ColorSpace.CS_sRGB);
        
        BISpecifier =
            new ImageTypeSpecifier[BufferedImage.TYPE_BYTE_INDEXED + 1];

        BISpecifier[BufferedImage.TYPE_CUSTOM] = null;

        BISpecifier[BufferedImage.TYPE_INT_RGB] =
            createPacked(sRGB,
                         0x00ff0000,
                         0x0000ff00,
                         0x000000ff,
                         0x0,
                         DataBuffer.TYPE_INT,
                         false);

        BISpecifier[BufferedImage.TYPE_INT_ARGB] =
            createPacked(sRGB,
                         0x00ff0000,
                         0x0000ff00,
                         0x000000ff,
                         0xff000000,
                         DataBuffer.TYPE_INT,
                         false);

        BISpecifier[BufferedImage.TYPE_INT_ARGB_PRE] =
            createPacked(sRGB,
                         0x00ff0000,
                         0x0000ff00,
                         0x000000ff,
                         0xff000000,
                         DataBuffer.TYPE_INT,
                         true);

        BISpecifier[BufferedImage.TYPE_INT_BGR] =
            createPacked(sRGB,
                         0x000000ff,
                         0x0000ff00,
                         0x00ff0000,
                         0x0,
                         DataBuffer.TYPE_INT,
                         false);

        int[] bOffsRGB = { 2, 1, 0 };
        BISpecifier[BufferedImage.TYPE_3BYTE_BGR] =