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/*
* Copyright 2002-2017 Drew Noakes
*
* Licensed 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.
*
* More information about this project is available at:
*
* https://drewnoakes.com/code/exif/
* https://github.com/drewnoakes/metadata-extractor
*/
package com.drew.metadata.adobe;
import com.drew.lang.annotations.Nullable;
import com.drew.metadata.TagDescriptor;
import static com.drew.metadata.adobe.AdobeJpegDirectory.*;
/**
* Provides human-readable string versions of the tags stored in an AdobeJpegDirectory.
*/
@SuppressWarnings("WeakerAccess")
public class AdobeJpegDescriptor extends TagDescriptor<AdobeJpegDirectory>
{
public AdobeJpegDescriptor(AdobeJpegDirectory directory)
{
super(directory);
}
@Override
public String getDescription(int tagType)
{
switch (tagType) {
case TAG_COLOR_TRANSFORM:
return getColorTransformDescription();
case TAG_DCT_ENCODE_VERSION:
return getDctEncodeVersionDescription();
default:
return super.getDescription(tagType);
}
}
@Nullable
private String getDctEncodeVersionDescription()
{
Integer value = _directory.getInteger(TAG_DCT_ENCODE_VERSION);
return value == null
? null
: value == 0x64
? "100"
: Integer.toString(value);
}
@Nullable
private String getColorTransformDescription()
{
return getIndexedDescription(TAG_COLOR_TRANSFORM,
"Unknown (RGB or CMYK)",
"YCbCr",
"YCCK");
}
}
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