AudioService: handle BT profile disconnections

The BT A2DP, LE and HearingAid proxies to the BT service were
 initialized on profile connection, but were never reset on
 profile disconnection in BtHelper.
Wrapped the calls to the BT proxies with try/catch as the
 notification that a profile disconnected can happen while
 the proxy is used.

Bug: 265815315
Test: BT crash case in bug
Change-Id: I9e7a24baba2742237397f950401fa03376fb5d29
Merged-In: I9e7a24baba2742237397f950401fa03376fb5d29

2 files changed, 62 insertions, 7 deletions

diff --git a/services/core/java/com/android/server/audio/AudioDeviceBroker.java b/services/core/java/com/android/server/audio/AudioDeviceBroker.java
index 0589cfc0967b..cf880eba20f7 100644
--- a/services/core/java/com/android/server/audio/AudioDeviceBroker.java
+++ b/services/core/java/com/android/server/audio/AudioDeviceBroker.java
@@ -1512,6 +1512,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
                 case MSG_I_BT_SERVICE_DISCONNECTED_PROFILE:
                     if (msg.arg1 != BluetoothProfile.HEADSET) {
                         synchronized (mDeviceStateLock) {
+                            mBtHelper.onBtProfileDisconnected(msg.arg1);
                             mDeviceInventory.onBtProfileDisconnected(msg.arg1);
                         }
                     } else {
diff --git a/services/core/java/com/android/server/audio/BtHelper.java b/services/core/java/com/android/server/audio/BtHelper.java
index 6cd42f87aede..f95982138564 100644
--- a/services/core/java/com/android/server/audio/BtHelper.java
+++ b/services/core/java/com/android/server/audio/BtHelper.java
@@ -279,7 +279,11 @@ public class BtHelper {
         }
         AudioService.sVolumeLogger.log(new AudioServiceEvents.VolumeEvent(
                 AudioServiceEvents.VolumeEvent.VOL_SET_AVRCP_VOL, index));
-        mA2dp.setAvrcpAbsoluteVolume(index);
+        try {
+            mA2dp.setAvrcpAbsoluteVolume(index);
+        } catch (Exception e) {
+            Log.e(TAG, "Exception while changing abs volume", e);
+        }
     }
 
     /*package*/ synchronized @AudioSystem.AudioFormatNativeEnumForBtCodec int getA2dpCodec(
@@ -287,7 +291,12 @@ public class BtHelper {
         if (mA2dp == null) {
             return AudioSystem.AUDIO_FORMAT_DEFAULT;
         }
-        final BluetoothCodecStatus btCodecStatus = mA2dp.getCodecStatus(device);
+        final BluetoothCodecStatus btCodecStatus = null;
+        try {
+            mA2dp.getCodecStatus(device);
+        } catch (Exception e) {
+            Log.e(TAG, "Exception while getting status of " + device, e);
+        }
         if (btCodecStatus == null) {
             return AudioSystem.AUDIO_FORMAT_DEFAULT;
         }
@@ -421,7 +430,11 @@ public class BtHelper {
         }
         AudioService.sVolumeLogger.log(new AudioServiceEvents.VolumeEvent(
                 AudioServiceEvents.VolumeEvent.VOL_SET_LE_AUDIO_VOL, index, maxIndex));
-        mLeAudio.setVolume(volume);
+        try {
+            mLeAudio.setVolume(volume);
+        } catch (Exception e) {
+            Log.e(TAG, "Exception while setting LE volume", e);
+        }
     }
 
     /*package*/ synchronized void setHearingAidVolume(int index, int streamType,
@@ -447,7 +460,11 @@ public class BtHelper {
             AudioService.sVolumeLogger.log(new AudioServiceEvents.VolumeEvent(
                     AudioServiceEvents.VolumeEvent.VOL_SET_HEARING_AID_VOL, index, gainDB));
         }
-        mHearingAid.setVolume(gainDB);
+        try {
+            mHearingAid.setVolume(gainDB);
+        } catch (Exception e) {
+            Log.i(TAG, "Exception while setting hearing aid volume", e);
+        }
     }
 
     /*package*/ synchronized void onBroadcastScoConnectionState(int state) {
@@ -487,6 +504,35 @@ public class BtHelper {
         mBluetoothHeadset = null;
     }
 
+    //@GuardedBy("AudioDeviceBroker.mDeviceStateLock")
+    /*package*/ synchronized void onBtProfileDisconnected(int profile) {
+        switch (profile) {
+            case BluetoothProfile.A2DP:
+                mA2dp = null;
+                break;
+            case BluetoothProfile.HEARING_AID:
+                mHearingAid = null;
+                break;
+            case BluetoothProfile.LE_AUDIO:
+                mLeAudio = null;
+                break;
+
+            case BluetoothProfile.A2DP_SINK:
+            case BluetoothProfile.LE_AUDIO_BROADCAST:
+                // shouldn't be received here as profile doesn't involve BtHelper
+                Log.e(TAG, "onBtProfileDisconnected: Not a profile handled by BtHelper "
+                        + BluetoothProfile.getProfileName(profile));
+                break;
+
+            default:
+                // Not a valid profile to disconnect
+                Log.e(TAG, "onBtProfileDisconnected: Not a valid profile to disconnect "
+                        + BluetoothProfile.getProfileName(profile));
+                break;
+        }
+    }
+
+    //@GuardedBy("AudioDeviceBroker.mDeviceStateLock")
     /*package*/ synchronized void onBtProfileConnected(int profile, BluetoothProfile proxy) {
         if (profile == BluetoothProfile.HEADSET) {
             onHeadsetProfileConnected((BluetoothHeadset) proxy);
@@ -672,7 +718,6 @@ public class BtHelper {
                 public void onServiceConnected(int profile, BluetoothProfile proxy) {
                     switch(profile) {
                         case BluetoothProfile.A2DP:
-                        case BluetoothProfile.A2DP_SINK:
                         case BluetoothProfile.HEADSET:
                         case BluetoothProfile.HEARING_AID:
                         case BluetoothProfile.LE_AUDIO:
@@ -682,6 +727,10 @@ public class BtHelper {
                             mDeviceBroker.postBtProfileConnected(profile, proxy);
                             break;
 
+                        case BluetoothProfile.A2DP_SINK:
+                            // no A2DP sink functionality handled by BtHelper
+                        case BluetoothProfile.LE_AUDIO_BROADCAST:
+                            // no broadcast functionality handled by BtHelper
                         default:
                             break;
                     }
@@ -690,14 +739,19 @@ public class BtHelper {
 
                     switch (profile) {
                         case BluetoothProfile.A2DP:
-                        case BluetoothProfile.A2DP_SINK:
                         case BluetoothProfile.HEADSET:
                         case BluetoothProfile.HEARING_AID:
                         case BluetoothProfile.LE_AUDIO:
-                        case BluetoothProfile.LE_AUDIO_BROADCAST:
+                            AudioService.sDeviceLogger.log(new AudioEventLogger.StringEvent(
+                                    "BT profile service: disconnecting "
+                                        + BluetoothProfile.getProfileName(profile) + " profile"));
                             mDeviceBroker.postBtProfileDisconnected(profile);
                             break;
 
+                        case BluetoothProfile.A2DP_SINK:
+                            // no A2DP sink functionality handled by BtHelper
+                        case BluetoothProfile.LE_AUDIO_BROADCAST:
+                            // no broadcast functionality handled by BtHelper
                         default:
                             break;
                     }