org.apache.fop.afp.modca.ImageDataDescriptor Maven / Gradle / Ivy
/*
* 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.
*/
/* $Id: ImageDataDescriptor.java 985537 2010-08-14 17:17:00Z jeremias $ */
package org.apache.fop.afp.modca;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.fop.afp.util.BinaryUtils;
/**
* ImageDataDescriptor
*/
public class ImageDataDescriptor extends AbstractDescriptor {
/** function set fs10 */
public static final byte FUNCTION_SET_FS10 = 0x0A;
/** function set fs11 */
public static final byte FUNCTION_SET_FS11 = 0x0B;
/** function set fs45 */
public static final byte FUNCTION_SET_FS45 = 45;
private byte functionSet = FUNCTION_SET_FS11; // FCNSET = IOCA FS 11
/**
* Constructor for a ImageDataDescriptor for the specified
* resolution, width and height.
*
* @param width The width of the image.
* @param height The height of the height.
* @param widthRes The horizontal resolution of the image.
* @param heightRes The vertical resolution of the image.
*/
public ImageDataDescriptor(int width, int height, int widthRes, int heightRes) {
super(width, height, widthRes, heightRes);
}
/**
* Sets the IOCA function set to be used.
* @param functionSet the function set (0x0A for FS 10, 0x0B for FS 11, etc.)
*/
public void setFunctionSet(byte functionSet) {
this.functionSet = functionSet;
}
/** {@inheritDoc} */
public void writeToStream(OutputStream os) throws IOException {
byte[] data = new byte[22];
copySF(data, Type.DESCRIPTOR, Category.IMAGE);
// SF length
byte[] len = BinaryUtils.convert(data.length - 1, 2);
data[1] = len[0];
data[2] = len[1];
byte[] x = BinaryUtils.convert(widthRes, 2);
data[10] = x[0];
data[11] = x[1];
byte[] y = BinaryUtils.convert(heightRes, 2);
data[12] = y[0];
data[13] = y[1];
byte[] w = BinaryUtils.convert(width, 2);
data[14] = w[0];
data[15] = w[1];
byte[] h = BinaryUtils.convert(height, 2);
data[16] = h[0];
data[17] = h[1];
//IOCA Function Set Field
data[18] = (byte)0xF7; // ID = Set IOCA Function Set
data[19] = 0x02; // Length
data[20] = 0x01; // Category = Function set identifier
data[21] = functionSet;
os.write(data);
}
}