/*
 * Copyright (C) 2014 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.camera.util;

import android.location.Location;

import com.android.camera.exif.ExifInterface;

/**
 * Exif utility functions.
 */
public class ExifUtil {

    /**
     * Adds the given location to the given exif.
     *
     * @param exif The exif to add the location tag to.
     * @param location The location to add.
     */
    public static void addLocationToExif(ExifInterface exif, Location location) {
        exif.addGpsTags(location.getLatitude(), location.getLongitude());
        exif.addGpsDateTimeStampTag(location.getTime());

        double altitude = location.getAltitude();
        if (altitude == 0) {
            return;
        }
        short altitudeRef = altitude < 0 ? ExifInterface.GpsAltitudeRef.SEA_LEVEL_NEGATIVE
                : ExifInterface.GpsAltitudeRef.SEA_LEVEL;
        exif.setTag(exif.buildTag(ExifInterface.TAG_GPS_ALTITUDE_REF, altitudeRef));
    }
}