/*
* Copyright 2000-2004 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package ae.com.sun.imageio.plugins.jpeg;
import ae.javax.imageio.spi.ImageWriterSpi;
import ae.javax.imageio.spi.ServiceRegistry;
import ae.javax.imageio.spi.IIORegistry;
import ae.javax.imageio.ImageWriter;
import ae.javax.imageio.ImageTypeSpecifier;
import ae.javax.imageio.IIOException;
import ae.java.awt.image.ColorModel;
import ae.java.awt.image.IndexColorModel;
import ae.java.awt.image.SampleModel;
import java.util.Locale;
public class JPEGImageWriterSpi extends ImageWriterSpi {
private static String [] readerSpiNames =
{"com.sun.imageio.plugins.jpeg.JPEGImageReaderSpi"};
private boolean registered = false;
public JPEGImageWriterSpi() {
super(JPEG.vendor,
JPEG.version,
JPEG.names,
JPEG.suffixes,
JPEG.MIMETypes,
"com.sun.imageio.plugins.jpeg.JPEGImageWriter",
STANDARD_OUTPUT_TYPE,
readerSpiNames,
true,
JPEG.nativeStreamMetadataFormatName,
JPEG.nativeStreamMetadataFormatClassName,
null, null,
true,
JPEG.nativeImageMetadataFormatName,
JPEG.nativeImageMetadataFormatClassName,
null, null
);
}
public String getDescription(Locale locale) {
return "Standard JPEG Image Writer";
}
public void onRegistration(ServiceRegistry registry,
Class<?> category) {
if (registered) {
return;
}
try {
java.security.AccessController.doPrivileged(
new sun.security.action.LoadLibraryAction("jpeg"));
} catch (Throwable e) { // Fail on any Throwable
// if it can't be loaded, deregister and return
registry.deregisterServiceProvider(this);
return;
}
registered = true;
}
public boolean isFormatLossless() {
return false;
}
public boolean canEncodeImage(ImageTypeSpecifier type) {
SampleModel sampleModel = type.getSampleModel();
// Find the maximum bit depth across all channels
int[] sampleSize = sampleModel.getSampleSize();
int bitDepth = sampleSize[0];
for (int i = 1; i < sampleSize.length; i++) {
if (sampleSize[i] > bitDepth) {
bitDepth = sampleSize[i];
}
}
// 4450894: Ensure bitDepth is between 1 and 8
if (bitDepth < 1 || bitDepth > 8) {
return false;
}
return true;
}
public ImageWriter createWriterInstance(Object extension)
throws IIOException {
return new JPEGImageWriter(this);
}
}