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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      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 com.android.cts.audiotest;
     18 
     19 import android.app.Activity;
     20 import android.app.KeyguardManager;
     21 import android.content.Context;
     22 import android.media.AudioManager;
     23 import android.os.Bundle;
     24 
     25 
     26 public class CtsAudioClientActivity extends Activity {
     27     private AudioProtocol mProtocol = null;
     28     int mVolumeMusic;
     29     int mVolumeVoice;
     30     @Override
     31     protected void onPause() {
     32         try {
     33             mProtocol.stop();
     34         } catch (InterruptedException e) {
     35             e.printStackTrace();
     36         }
     37         mProtocol = null;
     38         setVolume(AudioManager.STREAM_MUSIC, mVolumeMusic);
     39         setVolume(AudioManager.STREAM_VOICE_CALL, mVolumeVoice);
     40         super.onPause();
     41     }
     42 
     43     @Override
     44     protected void onResume() {
     45         // set volume to max
     46         mVolumeMusic = setVolume(AudioManager.STREAM_MUSIC, -1);
     47         mVolumeVoice = setVolume(AudioManager.STREAM_VOICE_CALL, -1);
     48         mProtocol = new AudioProtocol();
     49         mProtocol.start();
     50         super.onResume();
     51     }
     52 
     53     /** Called when the activity is first created. */
     54     @Override
     55     public void onCreate(Bundle savedInstanceState) {
     56         super.onCreate(savedInstanceState);
     57         setContentView(R.layout.main);
     58         KeyguardManager keyguardManager =
     59             (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
     60         keyguardManager.newKeyguardLock("cts-audio").disableKeyguard();
     61     }
     62 
     63     /**
     64      * set volume to desired level
     65      * @param level target level, if -1, set to max
     66      * @return the original volume level
     67      */
     68     int setVolume(int stream, int level) {
     69         AudioManager mgr = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
     70         mgr.setStreamMute(stream, false);
     71         int original = mgr.getStreamVolume(AudioManager.STREAM_MUSIC);
     72         int targetLevel = level;
     73         if (level == -1) {
     74             targetLevel = mgr.getStreamMaxVolume(stream);
     75         }
     76         mgr.setStreamVolume(stream, targetLevel, 0);
     77         return original;
     78     }
     79 }