| /* |
| * Copyright (C) 2022 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 android.companion.virtual.audio; |
| |
| import android.annotation.NonNull; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.Bundle; |
| import android.os.UserManager; |
| |
| import com.android.internal.annotations.GuardedBy; |
| |
| /** |
| * Class to detect the user restrictions change for microphone usage. |
| */ |
| final class UserRestrictionsDetector extends BroadcastReceiver { |
| private static final String TAG = "UserRestrictionsDetector"; |
| |
| /** Interface for listening user restrictions change. */ |
| interface UserRestrictionsCallback { |
| |
| /** Notifies when value of {@link UserManager#DISALLOW_UNMUTE_MICROPHONE} is changed. */ |
| void onMicrophoneRestrictionChanged(boolean isUnmuteMicDisallowed); |
| } |
| |
| private final Context mContext; |
| private final UserManager mUserManager; |
| private final Object mLock = new Object(); |
| @GuardedBy("mLock") |
| private boolean mIsUnmuteMicDisallowed; |
| private UserRestrictionsCallback mUserRestrictionsCallback; |
| |
| UserRestrictionsDetector(Context context) { |
| mContext = context; |
| mUserManager = context.getSystemService(UserManager.class); |
| } |
| |
| /** Returns value of {@link UserManager#DISALLOW_UNMUTE_MICROPHONE}. */ |
| boolean isUnmuteMicrophoneDisallowed() { |
| Bundle bundle = mUserManager.getUserRestrictions(); |
| return bundle.getBoolean(UserManager.DISALLOW_UNMUTE_MICROPHONE); |
| } |
| |
| /** Registers user restrictions change. */ |
| void register(@NonNull UserRestrictionsCallback callback) { |
| mUserRestrictionsCallback = callback; |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(UserManager.ACTION_USER_RESTRICTIONS_CHANGED); |
| mContext.registerReceiver(/* receiver= */ this, filter); |
| |
| synchronized (mLock) { |
| // Gets initial value. |
| mIsUnmuteMicDisallowed = isUnmuteMicrophoneDisallowed(); |
| } |
| } |
| |
| /** Unregisters user restrictions change. */ |
| void unregister() { |
| if (mUserRestrictionsCallback != null) { |
| mUserRestrictionsCallback = null; |
| mContext.unregisterReceiver(/* receiver= */ this); |
| } |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| final String action = intent.getAction(); |
| if (UserManager.ACTION_USER_RESTRICTIONS_CHANGED.equals(action)) { |
| boolean isUnmuteMicDisallowed = isUnmuteMicrophoneDisallowed(); |
| synchronized (mLock) { |
| if (isUnmuteMicDisallowed == mIsUnmuteMicDisallowed) { |
| return; |
| } |
| mIsUnmuteMicDisallowed = isUnmuteMicDisallowed; |
| } |
| if (mUserRestrictionsCallback != null) { |
| mUserRestrictionsCallback.onMicrophoneRestrictionChanged(isUnmuteMicDisallowed); |
| } |
| } |
| } |
| } |