org.apache.commons.imaging.formats.jpeg.segments.App2Segment 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.
*/
package org.apache.commons.imaging.formats.jpeg.segments;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.formats.jpeg.JpegConstants;
import static org.apache.commons.imaging.common.BinaryFunctions.*;
public class App2Segment extends AppnSegment implements Comparable {
private final byte[] iccBytes;
public final int curMarker;
public final int numMarkers;
public App2Segment(final int marker, final byte[] segmentData)
throws ImageReadException, IOException {
this(marker, segmentData.length, new ByteArrayInputStream(segmentData));
}
public App2Segment(final int marker, int markerLength, final InputStream is2)
throws ImageReadException, IOException {
super(marker, markerLength, is2);
if (startsWith(getSegmentData(),
JpegConstants.ICC_PROFILE_LABEL)) {
final InputStream is = new ByteArrayInputStream(getSegmentData());
readAndVerifyBytes(is, JpegConstants.ICC_PROFILE_LABEL,
"Not a Valid App2 Segment: missing ICC Profile label");
curMarker = readByte("curMarker", is, "Not a valid App2 Marker");
numMarkers = readByte("numMarkers", is, "Not a valid App2 Marker");
markerLength -= JpegConstants.ICC_PROFILE_LABEL.size();
markerLength -= (1 + 1);
iccBytes = readBytes("App2 Data", is, markerLength, "Invalid App2 Segment: insufficient data");
} else {
// debugByteArray("Unknown APP2 Segment Type", bytes);
curMarker = -1;
numMarkers = -1;
iccBytes = null;
}
}
@Override
public boolean equals(final Object obj) {
if (obj instanceof App2Segment) {
final App2Segment other = (App2Segment) obj;
return curMarker == other.curMarker;
}
return false;
}
@Override
public int hashCode() {
return curMarker;
}
public int compareTo(final App2Segment other) {
return curMarker - other.curMarker;
}
/**
* @return the iccBytes
*/
public byte[] getIccBytes() {
return iccBytes;
}
// public String getDescription()
// {
// return "APPN (APP"
// + (marker - JpegImageParser.JPEG_APP0)
// + ") (" + getDescription() + ")";
// }
}