/*
* Copyright 1999-2101 Alibaba Group.
*
* Licensed 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.
*/
package com.alibaba.simpleimage.util;
import java.awt.image.renderable.RenderedImageFactory;
import javax.media.jai.JAI;
import javax.media.jai.OperationDescriptor;
import javax.media.jai.OperationRegistry;
import javax.media.jai.registry.RIFRegistry;
import com.alibaba.simpleimage.jai.scale.LanczosCRIF;
import com.alibaba.simpleimage.jai.scale.LanczosDescriptor;
public class JAIRegisterHelper {
public static void register() {
//noting to do
}
/**
* 由于LancsosOpImage暂时不用，该方法也暂时不用
*/
@SuppressWarnings("unused")
private synchronized static void registerLanczosOperator() {
LanczosDescriptor lanczosDescriptor = new LanczosDescriptor();
RenderedImageFactory rif = new LanczosCRIF();
registerRIFOperator(lanczosDescriptor, rif, "Lanczos", "com.alibaba.platform", "rendered");
}
private static void registerRIFOperator(OperationDescriptor descriptor, RenderedImageFactory rif,
String operationName, String productName, String model) {
OperationRegistry op = JAI.getDefaultInstance().getOperationRegistry();
String[] p = op.getDescriptorNames(model);
boolean registed = false;
if (p != null) {
for (int i = 0; i < p.length; i++) {
if (p[i].equalsIgnoreCase(operationName)) {
registed = true;
break;
}
}
}
if (!registed) {
op.registerDescriptor(descriptor);
}
RIFRegistry.register(op, operationName, productName, rif);
}
}