PngChunkPhys.java
/*
* 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.
*/
package org.apache.commons.imaging.formats.png.chunks;
import static org.apache.commons.imaging.common.BinaryFunctions.read4Bytes;
import static org.apache.commons.imaging.common.BinaryFunctions.readByte;
import java.io.ByteArrayInputStream;
import java.io.IOException;
public class PngChunkPhys extends PngChunk {
private final int pixelsPerUnitXAxis;
private final int pixelsPerUnitYAxis;
private final int unitSpecifier;
public PngChunkPhys(final int length, final int chunkType, final int crc, final byte[] bytes) throws IOException {
super(length, chunkType, crc, bytes);
final ByteArrayInputStream is = new ByteArrayInputStream(bytes);
pixelsPerUnitXAxis = read4Bytes("PixelsPerUnitXAxis", is, "Not a Valid PNG File: pHYs Corrupt", getByteOrder());
pixelsPerUnitYAxis = read4Bytes("PixelsPerUnitYAxis", is, "Not a Valid PNG File: pHYs Corrupt", getByteOrder());
unitSpecifier = readByte("Unit specifier", is, "Not a Valid PNG File: pHYs Corrupt");
}
public int getPixelsPerUnitXAxis() {
return pixelsPerUnitXAxis;
}
public int getPixelsPerUnitYAxis() {
return pixelsPerUnitYAxis;
}
public int getUnitSpecifier() {
return unitSpecifier;
}
}