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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.afp.modca;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.commons.io.output.ByteArrayOutputStream;
import org.apache.xmlgraphics.util.MimeConstants;
import org.apache.fop.afp.AFPDataObjectInfo;
import org.apache.fop.afp.AFPImageObjectInfo;
import org.apache.fop.afp.Factory;
import org.apache.fop.afp.ioca.IDEStructureParameter;
import org.apache.fop.afp.ioca.ImageSegment;
/**
* An IOCA Image Data Object
*/
public class ImageObject extends AbstractDataObject {
private static final int MAX_DATA_LEN = 8192;
/** the image segment */
private ImageSegment imageSegment = null;
/**
* Constructor for the image object with the specified name,
* the name must be a fixed length of eight characters.
*
* @param name The name of the image.
* @param factory the resource manager
*/
public ImageObject(Factory factory, String name) {
super(factory, name);
}
/**
* Returns the image segment object associated with this image object.
* @return the image segment
*/
public ImageSegment getImageSegment() {
if (imageSegment == null) {
this.imageSegment = factory.createImageSegment();
}
return imageSegment;
}
/** {@inheritDoc} */
public void setViewport(AFPDataObjectInfo dataObjectInfo) {
super.setViewport(dataObjectInfo);
AFPImageObjectInfo imageObjectInfo = (AFPImageObjectInfo)dataObjectInfo;
int dataWidth = imageObjectInfo.getDataWidth();
int dataHeight = imageObjectInfo.getDataHeight();
int dataWidthRes = imageObjectInfo.getDataWidthRes();
int dataHeightRes = imageObjectInfo.getDataWidthRes();
ImageDataDescriptor imageDataDescriptor
= factory.createImageDataDescriptor(dataWidth, dataHeight, dataWidthRes, dataHeightRes);
if (imageObjectInfo.getBitsPerPixel() == 1) {
imageDataDescriptor.setFunctionSet(ImageDataDescriptor.FUNCTION_SET_FS10);
} else if (MimeConstants.MIME_AFP_IOCA_FS45.equals(imageObjectInfo.getMimeType())) {
imageDataDescriptor.setFunctionSet(ImageDataDescriptor.FUNCTION_SET_FS45);
}
getObjectEnvironmentGroup().setDataDescriptor(imageDataDescriptor);
getObjectEnvironmentGroup().setMapImageObject(
new MapImageObject(dataObjectInfo.getMappingOption()));
getImageSegment().setImageSize(dataWidth, dataHeight, dataWidthRes, dataHeightRes);
}
/**
* Sets the image encoding.
*
* @param encoding The image encoding.
*/
public void setEncoding(byte encoding) {
getImageSegment().setEncoding(encoding);
}
/**
* Sets the image compression.
*
* @param compression The image compression.
*/
public void setCompression(byte compression) {
getImageSegment().setCompression(compression);
}
/**
* Sets the image IDE size.
*
* @param size The IDE size.
*/
public void setIDESize(byte size) {
getImageSegment().setIDESize(size);
}
/**
* Sets the image IDE color model.
*
* @param colorModel the IDE color model.
* @deprecated Use {@link IDEStructureParameter#setColorModel(byte)} instead.
*/
public void setIDEColorModel(byte colorModel) {
getImageSegment().setIDEColorModel(colorModel);
}
/**
* Set either additive or subtractive mode (used for ASFLAG).
* @param subtractive true for subtractive mode, false for additive mode
* @deprecated Use {@link IDEStructureParameter#setSubtractive(boolean)} instead.
*/
public void setSubtractive(boolean subtractive) {
getImageSegment().setSubtractive(subtractive);
}
/**
* Set the data of the image.
*
* @param imageData the image data
*/
public void setData(byte[] imageData) {
getImageSegment().setData(imageData);
}
/** {@inheritDoc} */
protected void writeStart(OutputStream os) throws IOException {
byte[] data = new byte[17];
copySF(data, Type.BEGIN, Category.IMAGE);
os.write(data);
}
/** {@inheritDoc} */
protected void writeContent(OutputStream os) throws IOException {
super.writeContent(os);
if (imageSegment != null) {
final byte[] dataHeader = new byte[9];
copySF(dataHeader, SF_CLASS, Type.DATA, Category.IMAGE);
final int lengthOffset = 1;
// TODO save memory!
ByteArrayOutputStream baos = new ByteArrayOutputStream();
imageSegment.writeToStream(baos);
byte[] data = baos.toByteArray();
writeChunksToStream(data, dataHeader, lengthOffset, MAX_DATA_LEN, os);
}
}
/** {@inheritDoc} */
protected void writeEnd(OutputStream os) throws IOException {
byte[] data = new byte[17];
copySF(data, Type.END, Category.IMAGE);
os.write(data);
}
}
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