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      1 /*
      2  * Copyright (C) 2015 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.location.cts;
     18 
     19 import android.location.GpsSatellite;
     20 import android.location.GpsStatus;
     21 import android.location.LocationManager;
     22 
     23 import java.util.ArrayList;
     24 import java.util.List;
     25 import java.util.concurrent.CountDownLatch;
     26 import java.util.concurrent.TimeUnit;
     27 
     28 /**
     29  * Used for receiving notifications when GPS status has changed.
     30  */
     31 class TestGpsStatusListener implements GpsStatus.Listener {
     32 
     33     private volatile boolean mGpsStatusReceived;
     34     private GpsStatus mGpsStatus = null;
     35     // Timeout in sec for count down latch wait
     36     private static final int TIMEOUT_IN_SEC = 90;
     37     private final CountDownLatch mCountDownLatch;
     38     private final LocationManager mLocationManager;
     39     // Store list of Prn for Satellites.
     40     private List<List<Integer>> mGpsSatellitePrns;
     41 
     42     TestGpsStatusListener(int gpsStatusCountToCollect, TestLocationManager testLocationManager) {
     43         mCountDownLatch = new CountDownLatch(gpsStatusCountToCollect);
     44         mLocationManager = testLocationManager.getLocationManager();
     45         mGpsSatellitePrns = new ArrayList<List<Integer>>();
     46     }
     47 
     48     @Override
     49     public void onGpsStatusChanged(int event) {
     50         if (event == GpsStatus.GPS_EVENT_SATELLITE_STATUS) {
     51             mGpsStatus = mLocationManager.getGpsStatus(mGpsStatus);
     52             Iterable<GpsSatellite> satellites = mGpsStatus.getSatellites();
     53             List<Integer> prns = new ArrayList<Integer>();
     54             for (GpsSatellite gpsSatellite : satellites) {
     55                 prns.add(gpsSatellite.getPrn());
     56             }
     57             mGpsSatellitePrns.add(prns);
     58             if (!mGpsSatellitePrns.isEmpty()) {
     59                 mGpsStatusReceived = true;
     60                 mCountDownLatch.countDown();
     61             }
     62         }
     63     }
     64 
     65     /**
     66      * Returns the list of PRNs (pseudo-random number) for the satellite.
     67      *
     68      * @return list of PRNs number
     69      */
     70     public List<List<Integer>> getGpsSatellitePrns() {
     71         return mGpsSatellitePrns;
     72     }
     73 
     74     /**
     75      * Check if GPS Status is received.
     76      *
     77      * @return {@code true} if the GPS Status is received and {@code false}
     78      *         if GPS Status is not received.
     79      */
     80     public boolean isGpsStatusReceived() {
     81         return mGpsStatusReceived;
     82     }
     83 
     84     /**
     85      * Get GPS Status.
     86      *
     87      * @return mGpsStatus GPS Status
     88      */
     89     public GpsStatus getGpsStatus() {
     90         return mGpsStatus;
     91     }
     92 
     93     public boolean await() throws InterruptedException {
     94         return TestUtils.waitFor(mCountDownLatch, TIMEOUT_IN_SEC);
     95     }
     96 }
     97