Observe mic mute changes, consider recordingss paused when muted

Listen for the microphone mute state to change, and when it changes,
update the paused status of all audio recordings. If the mic is muted, then
every stream is considered paused.

Fixes: 168553482
Test: Get a call, then screen it. The "mic in use" icon should be
replaced by the mute icon

Change-Id: I5fad1f359c7009c924e8f7cce9c09f8ea299522a

packages/SystemUI/src/com/android/systemui/appops/AppOpsControllerImpl.java

@@ -16,8 +16,13 @@
 
 package com.android.systemui.appops;
 
+import static android.media.AudioManager.ACTION_MICROPHONE_MUTE_CHANGED;
+
 import android.app.AppOpsManager;
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.location.LocationManager;
 import android.media.AudioManager;
@@ -34,6 +39,7 @@ import androidx.annotation.WorkerThread;
 import com.android.internal.annotations.GuardedBy;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.systemui.Dumpable;
+import com.android.systemui.broadcast.BroadcastDispatcher;
 import com.android.systemui.dagger.SysUISingleton;
 import com.android.systemui.dagger.qualifiers.Background;
 import com.android.systemui.dump.DumpManager;
@@ -54,7 +60,7 @@ import javax.inject.Inject;
  * NotificationPresenter to be displayed to the user.
  */
 @SysUISingleton
-public class AppOpsControllerImpl implements AppOpsController,
+public class AppOpsControllerImpl extends BroadcastReceiver implements AppOpsController,
         AppOpsManager.OnOpActiveChangedInternalListener,
         AppOpsManager.OnOpNotedListener, Dumpable {
 
@@ -65,6 +71,7 @@ public class AppOpsControllerImpl implements AppOpsController,
     private static final String TAG = "AppOpsControllerImpl";
     private static final boolean DEBUG = false;
 
+    private final BroadcastDispatcher mDispatcher;
     private final AppOpsManager mAppOps;
     private final AudioManager mAudioManager;
     private final LocationManager mLocationManager;
@@ -79,6 +86,7 @@ public class AppOpsControllerImpl implements AppOpsController,
     private final SparseArray<Set<Callback>> mCallbacksByCode = new SparseArray<>();
     private final PermissionFlagsCache mFlagsCache;
     private boolean mListening;
+    private boolean mMicMuted;
 
     @GuardedBy("mActiveItems")
     private final List<AppOpItem> mActiveItems = new ArrayList<>();
@@ -105,8 +113,10 @@ public class AppOpsControllerImpl implements AppOpsController,
             @Background Looper bgLooper,
             DumpManager dumpManager,
             PermissionFlagsCache cache,
-            AudioManager audioManager
+            AudioManager audioManager,
+            BroadcastDispatcher dispatcher
     ) {
+        mDispatcher = dispatcher;
         mAppOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
         mFlagsCache = cache;
         mBGHandler = new H(bgLooper);
@@ -115,6 +125,7 @@ public class AppOpsControllerImpl implements AppOpsController,
             mCallbacksByCode.put(OPS[i], new ArraySet<>());
         }
         mAudioManager = audioManager;
+        mMicMuted = audioManager.isMicrophoneMute();
         mLocationManager = context.getSystemService(LocationManager.class);
         dumpManager.registerDumpable(TAG, this);
     }
@@ -133,6 +144,8 @@ public class AppOpsControllerImpl implements AppOpsController,
             mAudioManager.registerAudioRecordingCallback(mAudioRecordingCallback, mBGHandler);
             mBGHandler.post(() -> mAudioRecordingCallback.onRecordingConfigChanged(
                     mAudioManager.getActiveRecordingConfigurations()));
+            mDispatcher.registerReceiverWithHandler(this,
+                    new IntentFilter(ACTION_MICROPHONE_MUTE_CHANGED), mBGHandler);
 
         } else {
             mAppOps.stopWatchingActive(this);
@@ -140,6 +153,7 @@ public class AppOpsControllerImpl implements AppOpsController,
             mAudioManager.unregisterAudioRecordingCallback(mAudioRecordingCallback);
 
             mBGHandler.removeCallbacksAndMessages(null); // null removes all
+            mDispatcher.unregisterReceiver(this);
             synchronized (mActiveItems) {
                 mActiveItems.clear();
                 mRecordingsByUid.clear();
@@ -468,6 +482,9 @@ public class AppOpsControllerImpl implements AppOpsController,
     }
 
     private boolean isAnyRecordingPausedLocked(int uid) {
+        if (mMicMuted) {
+            return true;
+        }
         List<AudioRecordingConfiguration> configs = mRecordingsByUid.get(uid);
         if (configs == null) return false;
         int configsNum = configs.size();
@@ -522,6 +539,12 @@ public class AppOpsControllerImpl implements AppOpsController,
         }
     };
 
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        mMicMuted = mAudioManager.isMicrophoneMute();
+        updateRecordingPausedStatus();
+    }
+
     protected class H extends Handler {
         H(Looper looper) {
             super(looper);

packages/SystemUI/tests/src/com/android/systemui/appops/AppOpsControllerTest.java

@@ -47,6 +47,7 @@ import android.testing.TestableLooper;
 import androidx.test.filters.SmallTest;
 
 import com.android.systemui.SysuiTestCase;
+import com.android.systemui.broadcast.BroadcastDispatcher;
 import com.android.systemui.dump.DumpManager;
 
 import org.junit.Before;
@@ -82,6 +83,8 @@ public class AppOpsControllerTest extends SysuiTestCase {
     private PackageManager mPackageManager;
     @Mock(stubOnly = true)
     private AudioManager mAudioManager;
+    @Mock()
+    private BroadcastDispatcher mDispatcher;
     @Mock(stubOnly = true)
     private AudioManager.AudioRecordingCallback mRecordingCallback;
     @Mock(stubOnly = true)
@@ -120,7 +123,8 @@ public class AppOpsControllerTest extends SysuiTestCase {
                 mTestableLooper.getLooper(),
                 mDumpManager,
                 mFlagsCache,
-                mAudioManager
+                mAudioManager,
+                mDispatcher
         );
     }
 
@@ -128,12 +132,14 @@ public class AppOpsControllerTest extends SysuiTestCase {
     public void testOnlyListenForFewOps() {
         mController.setListening(true);
         verify(mAppOpsManager, times(1)).startWatchingActive(AppOpsControllerImpl.OPS, mController);
+        verify(mDispatcher, times(1)).registerReceiverWithHandler(eq(mController), any(), any());
     }
 
     @Test
     public void testStopListening() {
         mController.setListening(false);
         verify(mAppOpsManager, times(1)).stopWatchingActive(mController);
+        verify(mDispatcher, times(1)).unregisterReceiver(mController);
     }
 
     @Test