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/**
* ================================================
* LibLoader : a free Java resource loading library
* ================================================
*
* Project Info: http://reporting.pentaho.org/libloader/
*
* (C) Copyright 2006, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
*
* ------------
* $Id: JPEGImageFactoryModule.java 3520 2007-10-16 10:34:47Z tmorgner $
* ------------
* (C) Copyright 2006, by Pentaho Corporation.
*/
package org.jfree.resourceloader.factory.image;
import java.awt.Image;
import java.awt.Toolkit;
import java.io.InputStream;
import java.io.IOException;
import org.jfree.resourceloader.factory.AbstractFactoryModule;
import org.jfree.resourceloader.Resource;
import org.jfree.resourceloader.ResourceData;
import org.jfree.resourceloader.ResourceLoadingException;
import org.jfree.resourceloader.SimpleResource;
import org.jfree.resourceloader.ResourceKey;
import org.jfree.resourceloader.ResourceManager;
/**
* Creation-Date: 05.04.2006, 17:35:12
*
* @author Thomas Morgner
*/
public class JPEGImageFactoryModule extends AbstractFactoryModule
{
private static final int[] FINGERPRINT_1 = {0xFF, 0xD8, 0xFF, 0xE0};
private static final int[] FINGERPRINT_2 = {0x4A, 0x46, 0x49, 0x46, 0x00};
private static final String[] MIMETYPES =
{
"image/jpeg",
"image/jpg",
"image/jp_",
"application/jpg",
"application/x-jpg",
"image/pjpeg",
"image/pipeg",
"image/vnd.swiftview-jpeg",
"image/x-xbitmap"
};
private static final String[] FILEEXTENSIONS =
{
".jpg", ".jpeg"
};
private static final int[] EMPTY_ARRAY = new int[0];
public JPEGImageFactoryModule()
{
}
public int getHeaderFingerprintSize ()
{
return -1;
}
protected boolean canHandleResourceByContent(final InputStream data)
throws IOException
{
int[] fingerprint = FINGERPRINT_1;
for (int i = 0; i < fingerprint.length; i++)
{
if (fingerprint[i] != data.read())
{
return false;
}
}
if (data.read() == -1)
{
return false;
}
if (data.read() == -1)
{
return false;
}
fingerprint = FINGERPRINT_2;
for (int i = 0; i < fingerprint.length; i++)
{
if (fingerprint[i] != data.read())
{
return false;
}
}
return true;
}
protected int[] getFingerPrint()
{
return EMPTY_ARRAY;
}
protected String[] getMimeTypes()
{
return JPEGImageFactoryModule.MIMETYPES;
}
protected String[] getFileExtensions()
{
return JPEGImageFactoryModule.FILEEXTENSIONS;
}
public Resource create(final ResourceManager caller,
final ResourceData data,
final ResourceKey context)
throws ResourceLoadingException
{
final long version = data.getVersion(caller);
final Image image =
Toolkit.getDefaultToolkit().createImage(data.getResource(caller));
return new SimpleResource (data.getKey(), image, version);
}
}
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