001: /*
002: * $RCSfile: ImageInputStreamWrapper.java,v $
003: *
004: *
005: * Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * - Redistribution of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: *
014: * - Redistribution in binary form must reproduce the above copyright
015: * notice, this list of conditions and the following disclaimer in
016: * the documentation and/or other materials provided with the
017: * distribution.
018: *
019: * Neither the name of Sun Microsystems, Inc. or the names of
020: * contributors may be used to endorse or promote products derived
021: * from this software without specific prior written permission.
022: *
023: * This software is provided "AS IS," without a warranty of any
024: * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
025: * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
026: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027: * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
028: * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
029: * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030: * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
031: * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032: * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033: * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034: * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035: * POSSIBILITY OF SUCH DAMAGES.
036: *
037: * You acknowledge that this software is not designed or intended for
038: * use in the design, construction, operation or maintenance of any
039: * nuclear facility.
040: *
041: * $Revision: 1.1 $
042: * $Date: 2005/02/11 05:01:32 $
043: * $State: Exp $
044: */
045: package com.sun.media.imageioimpl.plugins.jpeg2000;
046:
047: import java.io.InputStream;
048: import java.io.IOException;
049: import javax.imageio.stream.ImageInputStream;
050:
051: /**
052: * This class is designed to wrap a <code>ImageInputStream</codem> into
053: * a <code>InputStream</code>. The reason is that <code>ImageInputStream</code>
054: * implements <code>DataInput</code> but doesn't extend
055: * <code>InputStream</code>. However, the JJ2000 JPEG 2000 packages accepts
056: * a <code>InputStream</code> when reads a JPEG 2000 image file.
057: */
058: public class ImageInputStreamWrapper extends InputStream {
059:
060: /** The <code>ImageInputStream</code> to be wrapped. */
061: private ImageInputStream src;
062:
063: /** Constructs an <code>ImageInputStreamWrapper</code> from the provided
064: * <code>ImageInputStream</code>.
065: *
066: * @param src The <code>ImageInputStream</code> to be wrapped.
067: */
068: public ImageInputStreamWrapper(ImageInputStream src) {
069: this .src = src;
070: }
071:
072: // Override the methods defined in <code>InputStream</code>
073: public int read() throws IOException {
074: return src.read();
075: }
076:
077: public void close() throws IOException {
078: src.close();
079: }
080:
081: public synchronized void mark(int readlimit) {
082: src.mark();
083: }
084:
085: public boolean markSupported() {
086: return true;
087: }
088:
089: public int read(byte b[]) throws IOException {
090: return src.read(b, 0, b.length);
091: }
092:
093: public int read(byte b[], int off, int len) throws IOException {
094: return src.read(b, off, len);
095: }
096:
097: public synchronized void reset() throws IOException {
098: src.reset();
099: }
100:
101: public long skip(long n) throws IOException {
102: return src.skipBytes(n);
103: }
104: }
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