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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.ArrayList;
/**
* This class stores the EXIF header in IFDs according to the JPEG specification.
* It is the result produced by {@link ExifReader}.
* @see ExifReader
* @see IfdData
*/
public class ExifData {
private final IfdData[] mIfdDatas = new IfdData[IfdId.TYPE_IFD_COUNT];
private byte[] mThumbnail;
private ArrayList<byte[]> mStripBytes = new ArrayList<byte[]>();
/**
* Gets the IFD data of the specified 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 IfdData getIfdData(int ifdId) {
return mIfdDatas[ifdId];
}
/**
* Adds IFD data. If IFD data of the same type already exists,
* it will be replaced by the new data.
*/
public void addIfdData(IfdData data) {
mIfdDatas[data.getId()] = data;
}
/**
* Gets the compressed thumbnail. Returns null if there is no compressed thumbnail.
*
* @see #hasCompressedThumbnail()
*/
public byte[] getCompressedThumbnail() {
return mThumbnail;
}
/**
* Sets the compressed thumbnail.
*/
public void setCompressedThumbnail(byte[] thumbnail) {
mThumbnail = thumbnail;
}
/**
* Returns true it this header contains a compressed thumbnail.
*/
public boolean hasCompressedThumbnail() {
return mThumbnail != null;
}
/**
* Adds an uncompressed strip.
*/
public void setStripBytes(int index, byte[] strip) {
if (index < mStripBytes.size()) {
mStripBytes.set(index, strip);
} else {
for (int i = mStripBytes.size(); i < index; i++) {
mStripBytes.add(null);
}
mStripBytes.add(strip);
}
}
/**
* Gets the strip count
*/
public int getStripCount() {
return mStripBytes.size();
}
/**
* Gets the strip at the specified index.
* @exceptions #IndexOutOfBoundException
*/
public byte[] getStrip(int index) {
return mStripBytes.get(index);
}
}
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