1 /*
2  * Copyright (C) 2020 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.google.android.car.kitchensink.audio;
18 
19 import android.annotation.NonNull;
20 import android.annotation.Nullable;
21 import android.car.Car;
22 import android.car.media.CarAudioManager;
23 import android.content.Context;
24 import android.media.AudioManager;
25 import android.os.Bundle;
26 import android.os.Handler;
27 import android.os.Looper;
28 import android.util.Log;
29 import android.view.LayoutInflater;
30 import android.view.View;
31 import android.view.ViewGroup;
32 
33 import androidx.fragment.app.Fragment;
34 import androidx.viewpager.widget.ViewPager;
35 
36 import com.google.android.car.kitchensink.R;
37 import com.google.android.material.tabs.TabLayout;
38 
39 import java.util.List;
40 
41 public class CarAudioInputTestFragment extends Fragment {
42     private static final String TAG = "CAR.AUDIO.INPUT.KS";
43     private static final boolean DEBUG = true;
44 
45 
46     private Handler mHandler;
47     private Context mContext;
48 
49     private Car mCar;
50     private AudioManager mAudioManager;
51     private CarAudioManager mCarAudioManager;
52     private TabLayout mZonesTabLayout;
53     private CarAudioZoneInputTabAdapter mInputAudioZoneAdapter;
54     private ViewPager mViewPager;
55 
connectCar()56     private void connectCar() {
57         mContext = getContext();
58         mHandler = new Handler(Looper.getMainLooper());
59         mCar = Car.createCar(mContext, /* handler= */ null,
60                 Car.CAR_WAIT_TIMEOUT_WAIT_FOREVER, mCarServiceLifecycleListener);
61     }
62 
63     private Car.CarServiceLifecycleListener mCarServiceLifecycleListener = (car, ready) -> {
64         if (!ready) {
65             if (DEBUG) {
66                 Log.d(TAG, "Disconnect from Car Service");
67             }
68             return;
69         }
70         if (DEBUG) {
71             Log.d(TAG, "Connected to Car Service");
72         }
73         mCarAudioManager = (CarAudioManager) car.getCarManager(Car.AUDIO_SERVICE);
74 
75         mAudioManager = mContext.getSystemService(AudioManager.class);
76     };
77 
78 
79     @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle)80     public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
81         Log.i(TAG, "onCreateView");
82         View view = inflater.inflate(R.layout.audio_input, container, false);
83         connectCar();
84         return view;
85     }
86 
87     @Override
onViewCreated(@onNull View view, @Nullable Bundle savedInstanceState)88     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
89         Log.i(TAG, "onViewCreated ");
90         mZonesTabLayout = view.findViewById(R.id.zones_input_tab);
91         mViewPager = (ViewPager) view.findViewById(R.id.zones_input_view_pager);
92 
93         mInputAudioZoneAdapter = new CarAudioZoneInputTabAdapter(getChildFragmentManager());
94         mViewPager.setAdapter(mInputAudioZoneAdapter);
95         initInputInfo();
96         mZonesTabLayout.setupWithViewPager(mViewPager);
97     }
98 
99     @Override
onDestroyView()100     public void onDestroyView() {
101         Log.i(TAG, "onDestroyView");
102 
103         if (mCar != null && mCar.isConnected()) {
104             mCar.disconnect();
105             mCar = null;
106         }
107         super.onDestroyView();
108     }
109 
initInputInfo()110     private void initInputInfo() {
111         if (!mCarAudioManager.isDynamicRoutingEnabled()) {
112             return;
113         }
114         List<Integer> audioZoneList = mCarAudioManager.getAudioZoneIds();
115         for (int audioZoneId : audioZoneList) {
116             if (mCarAudioManager.getInputDevicesForZoneId(audioZoneId).isEmpty()) {
117                 if (DEBUG) {
118                     Log.d(TAG, "Audio Zone " + audioZoneId + " has no input devices");
119                 }
120                 continue;
121             }
122             addAudioZoneInputDevices(audioZoneId);
123         }
124         mInputAudioZoneAdapter.notifyDataSetChanged();
125     }
126 
addAudioZoneInputDevices(int audioZoneId)127     private void addAudioZoneInputDevices(int audioZoneId) {
128         String title = "Audio Zone " + audioZoneId;
129         if (DEBUG) {
130             Log.d(TAG, title + " adding devices");
131         }
132         CarAudioZoneInputFragment fragment = new CarAudioZoneInputFragment(audioZoneId,
133                 mCarAudioManager, mAudioManager);
134 
135         mZonesTabLayout.addTab(mZonesTabLayout.newTab().setText(title));
136         mInputAudioZoneAdapter.addFragment(fragment, title);
137     }
138 }
139