/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.camera;
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import com.android.camera.debug.Log;
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import com.android.camera.exif.ExifInterface;
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import java.io.IOException;
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public class Exif {
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private static final Log.Tag TAG = new Log.Tag("CameraExif");
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public static ExifInterface getExif(byte[] jpegData) {
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ExifInterface exif = new ExifInterface();
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try {
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exif.readExif(jpegData);
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} catch (IOException e) {
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Log.w(TAG, "Failed to read EXIF data", e);
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}
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return exif;
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}
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// Returns the degrees in clockwise. Values are 0, 90, 180, or 270.
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public static int getOrientation(ExifInterface exif) {
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Integer val = exif.getTagIntValue(ExifInterface.TAG_ORIENTATION);
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if (val == null) {
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return 0;
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} else {
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return ExifInterface.getRotationForOrientationValue(val.shortValue());
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}
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}
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public static int getOrientation(byte[] jpegData) {
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if (jpegData == null) return 0;
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ExifInterface exif = getExif(jpegData);
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return getOrientation(exif);
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}
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}
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