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/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.
*/
package com.android.gallery3d.exif;
import java.util.HashMap;
import java.util.Map;
/**
* This class stores all the tags in an IFD.
*
* @see ExifData
* @see ExifTag
*/
public class IfdData {
private final int mIfdId;
private final Map<Short, ExifTag> mExifTags = new HashMap<Short, ExifTag>();
private int mOffsetToNextIfd = 0;
/**
* Creates an IfdData with given IFD ID.
*
* @see IfdId#TYPE_IFD_0
* @see IfdId#TYPE_IFD_1
* @see IfdId#TYPE_IFD_EXIF
* @see IfdId#TYPE_IFD_GPS
* @see IfdId#TYPE_IFD_INTEROPERABILITY
*/
public IfdData(int ifdId) {
mIfdId = ifdId;
}
/**
* Get a array the contains all {@link ExifTag} in this IFD.
*/
public ExifTag[] getAllTags(ExifTag[] outTag) {
return mExifTags.values().toArray(outTag);
}
/**
* Gets the ID of this IFD.
*
* @see IfdId#TYPE_IFD_0
* @see IfdId#TYPE_IFD_1
* @see IfdId#TYPE_IFD_EXIF
* @see IfdId#TYPE_IFD_GPS
* @see IfdId#TYPE_IFD_INTEROPERABILITY
*/
public int getId() {
return mIfdId;
}
/**
* Gets the {@link ExifTag} with given tag id. Return null if there is no such tag.
*/
public ExifTag getTag(short tagId) {
return mExifTags.get(tagId);
}
/**
* Adds or replaces a {@link ExifTag}.
*/
public void setTag(ExifTag tag) {
mExifTags.put(tag.getTagId(), tag);
}
/**
* Sets the offset of next IFD.
*/
void setOffsetToNextIfd(int offset) {
mOffsetToNextIfd = offset;
}
/**
* Gets the offset of next IFD.
*/
int getOffsetToNextIfd() {
return mOffsetToNextIfd;
}
}
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