AudioService: fix disconnect/connect of A2DP device
Due to the expected BECOMING_NOISY behavior associated
with a device disconnection, the disconnection is handled
asynchronously after a fixed delay. This delay caused an
inversion of commands in the processing order of the
disconnection of a device closely followed by connection
of the same device.
The fix consists in:
- overriding the equals() operator for BtDeviceConnectionInfo
so messages for a given device in the message queue
can be checked / removed.
- when AudioDeviceBroker receives a command for A2DP
connection or disconnection, remove all upcoming connection
and disconnection commands in the queue for this device
(see postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent)
- remove AudioDeviceBroker.handleSetA2dpSinkConnectionState, which
was only used in BtHelper.onA2dpProfileConnected() with
a CONNECTED state, and have this method perform a regular device
connection (just like when coming from AM->AS).
- in AudioDeviceInventory.onSetA2dpSinkConnectionState(), support
receiving a connection event for an already connected device,
to support codec changes.
This change also includes modifications to the classes involved
in the device connection to make them support mocking/spying
to reproduce the bug conditions (see AudioDeviceBrokerTest).
Bug: 134932649
Test: atest AudioDeviceBrokerTest
Change-Id: If2b3b41409c77467a181a2f9b42310db9b9de8c5
diff --git a/services/tests/servicestests/src/com/android/server/audio/AudioDeviceBrokerTest.java b/services/tests/servicestests/src/com/android/server/audio/AudioDeviceBrokerTest.java
new file mode 100644
index 0000000..5c2ad94
--- /dev/null
+++ b/services/tests/servicestests/src/com/android/server/audio/AudioDeviceBrokerTest.java
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2019 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 com.android.server.audio;
+
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.anyInt;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothProfile;
+import android.content.Context;
+import android.media.AudioManager;
+import android.media.AudioSystem;
+import android.util.Log;
+
+import androidx.test.InstrumentationRegistry;
+import androidx.test.filters.MediumTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentMatchers;
+import org.mockito.Mock;
+import org.mockito.Spy;
+
+@MediumTest
+@RunWith(AndroidJUnit4.class)
+public class AudioDeviceBrokerTest {
+
+ private static final String TAG = "AudioDeviceBrokerTest";
+ private static final int MAX_MESSAGE_HANDLING_DELAY_MS = 100;
+
+ private Context mContext;
+ // the actual class under test
+ private AudioDeviceBroker mAudioDeviceBroker;
+
+ @Mock private AudioService mMockAudioService;
+ @Spy private AudioDeviceInventory mSpyDevInventory;
+
+ private BluetoothDevice mFakeBtDevice;
+
+ @Before
+ public void setUp() throws Exception {
+ mContext = InstrumentationRegistry.getTargetContext();
+
+ mMockAudioService = mock(AudioService.class);
+ mSpyDevInventory = spy(new AudioDeviceInventory());
+ mAudioDeviceBroker = new AudioDeviceBroker(mContext, mMockAudioService, mSpyDevInventory);
+ mSpyDevInventory.setDeviceBroker(mAudioDeviceBroker);
+
+ BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
+ mFakeBtDevice = adapter.getRemoteDevice("00:01:02:03:04:05");
+ Assert.assertNotNull("invalid null BT device", mFakeBtDevice);
+ }
+
+ @After
+ public void tearDown() throws Exception { }
+
+ @Test
+ public void testSetUpAndTearDown() { }
+
+ /**
+ * Verify call to postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent() for connection
+ * calls into AudioDeviceInventory with the right params
+ * @throws Exception
+ */
+ @Test
+ public void testPostA2dpDeviceConnectionChange() throws Exception {
+ Log.i(TAG, "testPostA2dpDeviceConnectionChange");
+ Assert.assertNotNull("invalid null BT device", mFakeBtDevice);
+
+ mAudioDeviceBroker.postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(mFakeBtDevice,
+ BluetoothProfile.STATE_CONNECTED, BluetoothProfile.A2DP, true, 1);
+ Thread.sleep(MAX_MESSAGE_HANDLING_DELAY_MS);
+ verify(mSpyDevInventory, times(1)).setBluetoothA2dpDeviceConnectionState(
+ any(BluetoothDevice.class),
+ ArgumentMatchers.eq(BluetoothProfile.STATE_CONNECTED) /*state*/,
+ ArgumentMatchers.eq(BluetoothProfile.A2DP) /*profile*/,
+ ArgumentMatchers.eq(true) /*suppressNoisyIntent*/, anyInt() /*musicDevice*/,
+ ArgumentMatchers.eq(1) /*a2dpVolume*/
+ );
+ }
+
+ /**
+ * Verify call to postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent() for
+ * connection > pause > disconnection > connection
+ * keeps the device connected
+ * @throws Exception
+ */
+ @Test
+ public void testA2dpDeviceConnectionDisconnectionConnectionChange() throws Exception {
+ Log.i(TAG, "testA2dpDeviceConnectionDisconnectionConnectionChange");
+
+ doTestConnectionDisconnectionReconnection(0);
+ }
+
+ /**
+ * Verify device disconnection and reconnection within the BECOMING_NOISY window
+ * @throws Exception
+ */
+ @Test
+ public void testA2dpDeviceReconnectionWithinBecomingNoisyDelay() throws Exception {
+ Log.i(TAG, "testA2dpDeviceReconnectionWithinBecomingNoisyDelay");
+
+ doTestConnectionDisconnectionReconnection(AudioService.BECOMING_NOISY_DELAY_MS / 2);
+ }
+
+ private void doTestConnectionDisconnectionReconnection(int delayAfterDisconnection)
+ throws Exception {
+ when(mMockAudioService.getDeviceForStream(AudioManager.STREAM_MUSIC))
+ .thenReturn(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP);
+ when(mMockAudioService.isInCommunication()).thenReturn(false);
+ when(mMockAudioService.hasMediaDynamicPolicy()).thenReturn(false);
+ when(mMockAudioService.hasAudioFocusUsers()).thenReturn(false);
+
+ // first connection
+ mAudioDeviceBroker.postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(mFakeBtDevice,
+ BluetoothProfile.STATE_CONNECTED, BluetoothProfile.A2DP, true, 1);
+ Thread.sleep(MAX_MESSAGE_HANDLING_DELAY_MS);
+
+ // disconnection
+ mAudioDeviceBroker.postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(mFakeBtDevice,
+ BluetoothProfile.STATE_DISCONNECTED, BluetoothProfile.A2DP, false, -1);
+ if (delayAfterDisconnection > 0) {
+ Thread.sleep(delayAfterDisconnection);
+ }
+
+ // reconnection
+ mAudioDeviceBroker.postBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(mFakeBtDevice,
+ BluetoothProfile.STATE_CONNECTED, BluetoothProfile.A2DP, true, 2);
+ Thread.sleep(AudioService.BECOMING_NOISY_DELAY_MS + MAX_MESSAGE_HANDLING_DELAY_MS);
+
+ // Verify disconnection has been cancelled and we're seeing two connections attempts,
+ // with the device connected at the end of the test
+ verify(mSpyDevInventory, times(2)).onSetA2dpSinkConnectionState(
+ any(BtHelper.BluetoothA2dpDeviceInfo.class),
+ ArgumentMatchers.eq(BluetoothProfile.STATE_CONNECTED));
+ Assert.assertTrue("Mock device not connected",
+ mSpyDevInventory.isA2dpDeviceConnected(mFakeBtDevice));
+ }
+}