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      1 /*
      2  * Copyright (c) 2016, 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 package com.android.car.stream.telecom;
     17 
     18 import android.content.Intent;
     19 import android.os.Binder;
     20 import android.os.IBinder;
     21 import android.telecom.Call;
     22 import android.telecom.CallAudioState;
     23 import android.telecom.InCallService;
     24 import android.util.Log;
     25 
     26 /**
     27  * {@link InCallService} to listen for incoming calls and changes in call state.
     28  */
     29 public class StreamInCallService extends InCallService {
     30     public static final String LOCAL_INCALL_SERVICE_BIND_ACTION = "stream_incall_service_action";
     31     private static final String TAG = "StreamInCallService";
     32     private final IBinder mBinder = new StreamInCallServiceBinder();
     33 
     34     private InCallServiceCallback mCallback;
     35 
     36     /**
     37      * Callback interface to receive changes in the call state.
     38      */
     39     public interface InCallServiceCallback {
     40         void onCallAdded(Call call);
     41 
     42         void onCallRemoved(Call call);
     43 
     44         void onCallAudioStateChanged(CallAudioState audioState);
     45     }
     46 
     47     public class StreamInCallServiceBinder extends Binder {
     48         StreamInCallService getService() {
     49             return StreamInCallService.this;
     50         }
     51     }
     52 
     53     public void setCallback(InCallServiceCallback callback) {
     54         mCallback = callback;
     55     }
     56 
     57     @Override
     58     public IBinder onBind(Intent intent) {
     59         // This service can be bound by the framework or a local stream producer.
     60         // Check the action and return the appropriate IBinder.
     61         if (LOCAL_INCALL_SERVICE_BIND_ACTION.equals(intent.getAction())) {
     62             if (Log.isLoggable(TAG, Log.DEBUG)) {
     63                 Log.d(TAG, "onBind with action: LOCAL_INCALL_SERVICE_BIND_ACTION," +
     64                         " returning StreamInCallServiceBinder");
     65             }
     66             return mBinder;
     67         }
     68         if (Log.isLoggable(TAG, Log.DEBUG)) {
     69             Log.d(TAG, "onBind without action specified, returning InCallService");
     70         }
     71         return super.onBind(intent);
     72     }
     73 
     74     @Override
     75     public void onCallAdded(Call call) {
     76         if (mCallback != null) {
     77             mCallback.onCallAdded(call);
     78         }
     79     }
     80 
     81     @Override
     82     public void onCallRemoved(Call call) {
     83         if (mCallback != null) {
     84             mCallback.onCallRemoved(call);
     85         }
     86     }
     87 
     88     @Override
     89     public void onCallAudioStateChanged(CallAudioState audioState) {
     90         if (mCallback != null) {
     91             mCallback.onCallAudioStateChanged(audioState);
     92         }
     93         super.onCallAudioStateChanged(audioState);
     94     }
     95 
     96     public boolean isMuted() {
     97         CallAudioState audioState = getCallAudioState();
     98         return audioState != null && audioState.isMuted();
     99     }
    100 }
    101