01: /*
02: * $RCSfile: MlibLookupRIF.java,v $
03: *
04: * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
05: *
06: * Use is subject to license terms.
07: *
08: * $Revision: 1.1 $
09: * $Date: 2005/02/11 04:55:58 $
10: * $State: Exp $
11: */
12: package com.sun.media.jai.mlib;
13:
14: import java.awt.RenderingHints;
15: import java.awt.image.DataBuffer;
16: import java.awt.image.RenderedImage;
17: import java.awt.image.renderable.ParameterBlock;
18: import java.awt.image.renderable.RenderedImageFactory;
19: import javax.media.jai.ImageLayout;
20: import javax.media.jai.LookupTableJAI;
21: import java.util.Map;
22: import com.sun.media.jai.opimage.RIFUtil;
23:
24: /**
25: * A <code>RIF</code> supporting the "Lookup" operation in the
26: * rendered image mode using MediaLib.
27: *
28: * @see javax.media.jai.operator.LookupDescriptor
29: * @see MlibLookupOpImage
30: *
31: */
32: public class MlibLookupRIF implements RenderedImageFactory {
33:
34: /** Constructor. */
35: public MlibLookupRIF() {
36: }
37:
38: /**
39: * Creates a new instance of <code>MlibLookupOpImage</code> in
40: * the rendered image mode.
41: *
42: * @param args The source image and lookup table.
43: * @param hints May contain rendering hints and destination image layout.
44: */
45: public RenderedImage create(ParameterBlock args,
46: RenderingHints hints) {
47: /* Get ImageLayout and TileCache from RenderingHints. */
48: ImageLayout layout = RIFUtil.getImageLayoutHint(hints);
49:
50: if (!MediaLibAccessor.isMediaLibCompatible(args)) {
51: return null;
52: }
53:
54: /* The table should be less than or equal to 4 bands. */
55: LookupTableJAI table = (LookupTableJAI) args
56: .getObjectParameter(0);
57: if (table.getNumBands() > 4
58: || table.getDataType() == DataBuffer.TYPE_USHORT) {
59: return null;
60: }
61:
62: return new MlibLookupOpImage(args.getRenderedSource(0), hints,
63: layout, table);
64: }
65: }
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