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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.lang.reflect.Array;
import java.util.HashMap;
import java.util.Map;
public class IfdData {
private final int mIfdType;
private final Map<Short, ExifTag> mExifTags = new HashMap<Short, ExifTag>();
private final Map<Short, Object> mValues = new HashMap<Short, Object>();
public IfdData(int ifdType) {
mIfdType = ifdType;
}
public ExifTag[] getAllTags(ExifTag[] outTag) {
return mExifTags.values().toArray(outTag);
}
public int getIfdType() {
return mIfdType;
}
public ExifTag getTag(short tagId) {
return mExifTags.get(tagId);
}
public short getShort(short tagId, int index) {
return (Short) Array.get(mValues.get(tagId), index);
}
public short getShort(short tagId) {
return (Short) Array.get(mValues.get(tagId), 0);
}
public int getUnsignedShort(short tagId, int index) {
return (Integer) Array.get(mValues.get(tagId), index);
}
public int getUnsignedShort(short tagId) {
return (Integer) Array.get(mValues.get(tagId), 0);
}
public int getInt(short tagId, int index) {
return (Integer) Array.get(mValues.get(tagId), index);
}
public int getInt(short tagId) {
return (Integer) Array.get(mValues.get(tagId), 0);
}
public long getUnsignedInt(short tagId, int index) {
return (Long) Array.get(mValues.get(tagId), index);
}
public long getUnsignedInt(short tagId) {
return (Long) Array.get(mValues.get(tagId), 0);
}
public String getString(short tagId) {
return (String) mValues.get(tagId);
}
public Rational getRational(short tagId, int index) {
return ((Rational[]) mValues.get(tagId))[index];
}
public Rational getRational(short tagId) {
return ((Rational[]) mValues.get(tagId))[0];
}
public int getBytes(short tagId, byte[] buf) {
return getBytes(tagId, buf, 0, buf.length);
}
public int getBytes(short tagId, byte[] buf, int offset, int length) {
Object data = mValues.get(tagId);
if (Array.getLength(data) < length + offset) {
System.arraycopy(data, offset, buf, 0, Array.getLength(data) - offset);
return Array.getLength(data) - offset;
} else {
System.arraycopy(data, offset, buf, 0, length);
return length;
}
}
public void addTag(ExifTag tag, Object object) {
mExifTags.put(tag.getTagId(), tag);
if (object.getClass().isArray() || object.getClass() == String.class) {
mValues.put(tag.getTagId(), object);
} else {
Object array = Array.newInstance(object.getClass(), 1);
Array.set(array, 0, object);
mValues.put(tag.getTagId(), array);
}
}
}
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