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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.exif.makernotes;
import com.drew.lang.annotations.NotNull;
import com.drew.lang.annotations.Nullable;
import com.drew.metadata.TagDescriptor;
import static com.drew.metadata.exif.makernotes.SigmaMakernoteDirectory.*;
/**
* Provides human-readable string representations of tag values stored in a {@link SigmaMakernoteDirectory}.
*
* @author Drew Noakes https://drewnoakes.com
*/
@SuppressWarnings("WeakerAccess")
public class SigmaMakernoteDescriptor extends TagDescriptor<SigmaMakernoteDirectory>
{
public SigmaMakernoteDescriptor(@NotNull SigmaMakernoteDirectory directory)
{
super(directory);
}
@Override
public String getDescription(int tagType)
{
switch (tagType) {
case TAG_EXPOSURE_MODE:
return getExposureModeDescription();
case TAG_METERING_MODE:
return getMeteringModeDescription();
}
return super.getDescription(tagType);
}
@Nullable
private String getMeteringModeDescription()
{
String value = _directory.getString(TAG_METERING_MODE);
if (value == null || value.length() == 0)
return null;
switch (value.charAt(0)) {
case '8': return "Multi Segment";
case 'A': return "Average";
case 'C': return "Center Weighted Average";
default:
return value;
}
}
@Nullable
private String getExposureModeDescription()
{
String value = _directory.getString(TAG_EXPOSURE_MODE);
if (value == null || value.length() == 0)
return null;
switch (value.charAt(0)) {
case 'A': return "Aperture Priority AE";
case 'M': return "Manual";
case 'P': return "Program AE";
case 'S': return "Shutter Speed Priority AE";
default:
return value;
}
}
}
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