/*
* Copyright (c) 2016, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.twelvemonkeys.imageio.plugins.jpeg;
import com.twelvemonkeys.imageio.metadata.jpeg.JPEG;
import java.io.ByteArrayInputStream;
import java.io.DataInput;
import java.io.IOException;
import java.io.InputStream;
/**
* Application.
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: harald.kuhr$
* @version $Id: Application.java,v 1.0 22/08/16 harald.kuhr Exp$
*/
class Application extends Segment {
final String identifier;
final byte[] data;
Application(final int marker, final String identifier, final byte[] data) {
super(marker);
this.identifier = identifier; // NOTE: Some JPEGs contain APP segments without NULL-terminated identifier
this.data = data;
}
InputStream data() {
int offset = identifier.length() + 1;
return new ByteArrayInputStream(data, offset, data.length - offset);
}
@Override
public String toString() {
return "APP" + (marker & 0x0f) + "/" + identifier + "[length: " + data.length + "]";
}
public static Application read(final int marker, final String identifier, final DataInput data, final int length) throws IOException {
switch (marker) {
case JPEG.APP0:
// JFIF
if ("JFIF".equals(identifier)) {
return JFIF.read(data, length);
}
case JPEG.APP1:
// JFXX
if ("JFXX".equals(identifier)) {
return JFXX.read(data, length);
}
// TODO: Exif?
case JPEG.APP2:
// ICC_PROFILE
if ("ICC_PROFILE".equals(identifier)) {
return ICCProfile.read(data, length);
}
case JPEG.APP14:
// Adobe
if ("Adobe".equals(identifier)) {
return AdobeDCT.read(data, length);
}
default:
// Generic APPn segment
byte[] bytes = new byte[length - 2];
data.readFully(bytes);
return new Application(marker, identifier, bytes);
}
}
}