01: /*
02: * $RCSfile: MlibRescaleRIF.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 04:56:03 $
10: * $State: Exp $
11: */
12: package com.sun.media.jai.mlib;
13:
14: import java.awt.RenderingHints;
15: import java.awt.image.RenderedImage;
16: import java.awt.image.renderable.ParameterBlock;
17: import java.awt.image.renderable.RenderedImageFactory;
18: import javax.media.jai.ImageLayout;
19: import java.util.Map;
20: import com.sun.media.jai.opimage.RIFUtil;
21:
22: /**
23: * A <code>RIF</code> supporting the "Rescale" operation in the
24: * rendered image mode using MediaLib.
25: *
26: * @see javax.media.jai.operator.RescaleDescriptor
27: * @see MlibRescaleOpImage
28: *
29: */
30: public class MlibRescaleRIF implements RenderedImageFactory {
31:
32: /** Constructor. */
33: public MlibRescaleRIF() {
34: }
35:
36: /**
37: * Creates a new instance of <code>MlibRescaleOpImage</code> in
38: * the rendered image mode.
39: *
40: * @param args The source image to be rescaled and the constants.
41: * @param hints May contain rendering hints and destination image layout.
42: */
43: public RenderedImage create(ParameterBlock args,
44: RenderingHints hints) {
45: /* Get ImageLayout and TileCache from RenderingHints. */
46: ImageLayout layout = RIFUtil.getImageLayoutHint(hints);
47:
48: if (!MediaLibAccessor.isMediaLibCompatible(args, layout)
49: || !MediaLibAccessor.hasSameNumBands(args, layout)) {
50: return null;
51: }
52:
53: return new MlibRescaleOpImage(args.getRenderedSource(0), hints,
54: layout, (double[]) args.getObjectParameter(0),
55: (double[]) args.getObjectParameter(1));
56: }
57: }
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