org.apache.fop.afp.ioca.ImageInputDescriptor 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: ImageInputDescriptor.java 1297404 2012-03-06 10:17:54Z vhennebert $ */
package org.apache.fop.afp.ioca;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.fop.afp.modca.AbstractAFPObject;
import org.apache.fop.afp.util.BinaryUtils;
/**
* The IM Image Input Descriptor structured field contains the
* descriptor data for an IM image data object. This data specifies
* the resolution, size, and color of the IM image.
*/
public class ImageInputDescriptor extends AbstractAFPObject {
/** the resolution of the raster image (default 240) */
private int resolution = 240;
/** {@inheritDoc} */
public void writeToStream(OutputStream os) throws IOException {
byte[] data = new byte[45];
copySF(data, Type.DESCRIPTOR, Category.IM_IMAGE);
data[1] = 0x00; // length
data[2] = 0x2C;
// Constant data.
data[9] = 0x00;
data[10] = 0x00;
data[11] = 0x09;
data[12] = 0x60;
data[13] = 0x09;
data[14] = 0x60;
data[15] = 0x00;
data[16] = 0x00;
data[17] = 0x00;
data[18] = 0x00;
data[19] = 0x00;
data[20] = 0x00;
// X Base (Fixed x00)
data[21] = 0x00;
// Y Base (Fixed x00)
data[22] = 0x00;
byte[] imagepoints = BinaryUtils.convert(resolution * 10, 2);
/**
* Specifies the number of image points per unit base for the X axis
* of the image. This value is ten times the resolution of the image
* in the X direction.
*/
data[23] = imagepoints[0];
data[24] = imagepoints[1];
/**
* Specifies the number of image points per unit base for the Y axis
* of the image. This value is ten times the resolution of the image
* in the Y direction.
*/
data[25] = imagepoints[0];
data[26] = imagepoints[1];
/**
* Specifies the extent in the X direction, in image points, of an
* non-celled (simple) image.
*/
data[27] = 0x00;
data[28] = 0x01;
/**
* Specifies the extent in the Y direction, in image points, of an
* non-celled (simple) image.
*/
data[29] = 0x00;
data[30] = 0x01;
// Constant Data
data[31] = 0x00;
data[32] = 0x00;
data[33] = 0x00;
data[34] = 0x00;
data[35] = 0x2D;
data[36] = 0x00;
// Default size of image cell in X direction
data[37] = 0x00;
data[38] = 0x01;
// Default size of image cell in Y direction
data[39] = 0x00;
data[40] = 0x01;
// Constant Data
data[41] = 0x00;
data[42] = 0x01;
// Image Color
data[43] = (byte)0xFF;
data[44] = (byte)0xFF;
os.write(data);
}
/**
* Sets the resolution information for the raster image
* the default value is a resolution of 240 dpi.
*
* @param resolution The resolution value
*/
public void setResolution(int resolution) {
this.resolution = resolution;
}
}