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/*
* Copyright 2002-2012 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:
*
* http://drewnoakes.com/code/exif/
* http://code.google.com/p/metadata-extractor/
*/
package com.drew.metadata.jfif;
import com.drew.lang.annotations.NotNull;
import com.drew.metadata.Directory;
import com.drew.metadata.MetadataException;
import java.util.HashMap;
/**
* Directory of tags and values for the SOF0 Jfif segment. This segment holds basic metadata about the image.
*
* @author Yuri Binev, Drew Noakes
*/
public class JfifDirectory extends Directory
{
public static final int TAG_JFIF_VERSION = 5;
/** Units for pixel density fields. One of None, Pixels per Inch, Pixels per Centimetre. */
public static final int TAG_JFIF_UNITS = 7;
public static final int TAG_JFIF_RESX = 8;
public static final int TAG_JFIF_RESY = 10;
@NotNull
protected static final HashMap<Integer, String> _tagNameMap = new HashMap<Integer, String>();
static
{
_tagNameMap.put(TAG_JFIF_VERSION, "Version");
_tagNameMap.put(TAG_JFIF_UNITS, "Resolution Units");
_tagNameMap.put(TAG_JFIF_RESY, "Y Resolution");
_tagNameMap.put(TAG_JFIF_RESX, "X Resolution");
}
public JfifDirectory()
{
this.setDescriptor(new JfifDescriptor(this));
}
@NotNull
public String getName()
{
return "Jfif";
}
@NotNull
protected HashMap<Integer, String> getTagNameMap()
{
return _tagNameMap;
}
public int getVersion() throws MetadataException
{
return getInt(JfifDirectory.TAG_JFIF_VERSION);
}
public int getResUnits() throws MetadataException
{
return getInt(JfifDirectory.TAG_JFIF_UNITS);
}
public int getImageWidth() throws MetadataException
{
return getInt(JfifDirectory.TAG_JFIF_RESY);
}
public int getImageHeight() throws MetadataException
{
return getInt(JfifDirectory.TAG_JFIF_RESX);
}
}
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