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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.
*/
/* $Id$ */
package org.apache.fop.render.afp.modca;
import java.io.IOException;
import java.io.OutputStream;
/**
* An Image Segment is represented by a set of self-defining fields, fields
* that describe their own contents. It starts with a Begin Segment, and
* ends with an End Segment.
*
* Between the Begin Segment and End Segment is the image information to
* be processed, called the Image Content.
*
* Only one Image Content can exist within a single IOCA Image Segment.
*/
public class ImageSegment extends AbstractNamedAFPObject {
/**
* Default name for the object environment group
*/
private static final String DEFAULT_NAME = "IS000001";
/**
* The ImageContent for the image segment
*/
private ImageContent imageContent = null;
/**
* Default constructor for the ImageSegment.
*/
public ImageSegment() {
this(DEFAULT_NAME);
}
/**
* Constructor for the image segment with the specified name,
* the name must be a fixed length of eight characters.
* @param name The name of the image.
*/
public ImageSegment(String name) {
super(name);
}
/**
* {@inheritDoc}
*/
protected int getNameLength() {
return 4;
}
/**
* Sets the image size parameters
* resolution, hsize and vsize.
* @param hresol The horizontal resolution of the image.
* @param vresol The vertical resolution of the image.
* @param hsize The horizontal size of the image.
* @param vsize The vertival size of the image.
*/
public void setImageSize(int hresol, int vresol, int hsize, int vsize) {
if (imageContent == null) {
imageContent = new ImageContent();
}
imageContent.setImageSize(hresol, vresol, hsize, vsize);
}
/**
* Sets the image encoding.
* @param encoding The image encoding.
*/
public void setImageEncoding(byte encoding) {
if (imageContent == null) {
imageContent = new ImageContent();
}
imageContent.setImageEncoding(encoding);
}
/**
* Sets the image compression.
* @param compression The image compression.
*/
public void setImageCompression(byte compression) {
if (imageContent == null) {
imageContent = new ImageContent();
}
imageContent.setImageCompression(compression);
}
/**
* Sets the image IDE size.
* @param size The IDE size.
*/
public void setImageIDESize(byte size) {
if (imageContent == null) {
imageContent = new ImageContent();
}
imageContent.setImageIDESize(size);
}
/**
* Sets the image IDE color model.
* @param colorModel the IDE color model.
*/
public void setImageIDEColorModel(byte colorModel) {
if (imageContent == null) {
imageContent = new ImageContent();
}
imageContent.setImageIDEColorModel(colorModel);
}
/**
* Set the data of the image.
* @param data the image data
*/
public void setImageData(byte[] data) {
if (imageContent == null) {
imageContent = new ImageContent();
}
imageContent.setImageData(data);
}
/**
* {@inheritDoc}
*/
public void writeContent(OutputStream os) throws IOException {
if (imageContent != null) {
imageContent.write(os);
}
}
/**
* {@inheritDoc}
*/
protected void writeStart(OutputStream os) throws IOException {
byte[] data = new byte[] {
0x70, // ID
0x04, // Length
nameBytes[0], // Name byte 1
nameBytes[1], // Name byte 2
nameBytes[2], // Name byte 3
nameBytes[3], // Name byte 4
};
os.write(data);
}
/**
* {@inheritDoc}
*/
protected void writeEnd(OutputStream os) throws IOException {
byte[] data = new byte[] {
0x71, // ID
0x00, // Length
};
os.write(data);
}
}
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