01: /*
02: * $RCSfile: MlibMinFilterRIF.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 04:56:00 $
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.BorderExtender;
19: import javax.media.jai.ImageLayout;
20: import javax.media.jai.KernelJAI;
21: import java.util.Map;
22: import javax.media.jai.operator.MinFilterDescriptor;
23: import javax.media.jai.operator.MinFilterShape;
24: import com.sun.media.jai.opimage.RIFUtil;
25:
26: /**
27: * Creates a MlibMinFilterOpImage subclass for the given input
28: * mask type
29: * @see MlibMinFilterOpImage
30: */
31: public class MlibMinFilterRIF implements RenderedImageFactory {
32:
33: /** Constructor. */
34: public MlibMinFilterRIF() {
35: }
36:
37: /**
38: * Create a new instance of MlibMinFilterOpImage in the rendered layer.
39: * This method satisfies the implementation of RIF.
40: *
41: * @param paramBlock The source image and the convolution kernel.
42: */
43: public RenderedImage create(ParameterBlock paramBlock,
44: RenderingHints renderHints) {
45: // Get ImageLayout from renderHints if any.
46: ImageLayout layout = RIFUtil.getImageLayoutHint(renderHints);
47:
48: if (!MediaLibAccessor.isMediaLibCompatible(paramBlock, layout)
49: || !MediaLibAccessor
50: .hasSameNumBands(paramBlock, layout)) {
51: return null;
52: }
53:
54: // Get BorderExtender from renderHints if any.
55: BorderExtender extender = RIFUtil
56: .getBorderExtenderHint(renderHints);
57:
58: MinFilterShape maskType = (MinFilterShape) paramBlock
59: .getObjectParameter(0);
60: int maskSize = paramBlock.getIntParameter(1);
61: RenderedImage ri = paramBlock.getRenderedSource(0);
62:
63: if (maskType.equals(MinFilterDescriptor.MIN_MASK_SQUARE)
64: && (maskSize == 3 || maskSize == 5 || maskSize == 7)
65: && ri.getSampleModel().getNumBands() == 1) {
66: return new MlibMinFilterOpImage(ri, extender, renderHints,
67: layout, maskType, maskSize);
68: } else {
69: return null;
70: }
71:
72: }
73: }
|