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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Rustem Rafikov
* @version $Revision: 1.2 $
*/
package org.apache.harmony.x.imageio.plugins.jpeg;
import javax.imageio.stream.ImageInputStream;
import org.apache.harmony.awt.gl.image.DecodingImageSource;
import java.io.InputStream;
import java.io.IOException;
/**
* This allows usage of the java2d jpegdecoder with ImageInputStream in
* the JPEGImageReader. Temporary, only to make JPEGImageReader#read(..)
* working.
*
*/
public class IISDecodingImageSource extends DecodingImageSource {
private final InputStream is;
public IISDecodingImageSource(ImageInputStream iis) {
is = new IISToInputStreamWrapper(iis);
}
@Override
protected boolean checkConnection() {
return true;
}
@Override
protected InputStream getInputStream() {
return is;
}
static class IISToInputStreamWrapper extends InputStream {
private ImageInputStream input;
public IISToInputStreamWrapper(ImageInputStream input) {
this.input=input;
}
@Override
public int read() throws IOException {
return input.read();
}
@Override
public int read(byte[] b) throws IOException {
return input.read(b);
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
return input.read(b, off, len);
}
@Override
public long skip(long n) throws IOException {
return input.skipBytes(n);
}
@Override
public boolean markSupported() {
return true; // This is orig
// ???AWT: FIXME
// This is an error in Harmony. Not all input streams
// have mark support and it is not ok to just return true.
// There should be an input.markSupported(). However, if
// this call returns false, nothing works anymore.
// The backside is that BitmapFactory uses a call to markSupport()
// to find out if it needs to warp the stream in a
// BufferedInputStream to get mark support, and this fails!
// Currently, the hack is in BitmapFactory, where we always
// wrap the stream in a BufferedInputStream.
}
@Override
public void mark(int readlimit) {
input.mark();
}
@Override
public void reset() throws IOException {
input.reset();
}
@Override
public void close() throws IOException {
input.close();
}
}
}
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