Merge "Set LE audio volume when audio mode is changed" am: b731a366a0

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2160736

Change-Id: Idef5f1f131005844e1500a0ea8135a1b5f0a229f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

services/core/java/com/android/server/audio/AudioService.java

@@ -3835,6 +3835,36 @@ public class AudioService extends IAudioService.Stub
         }
     }
 
+    private void setLeAudioVolumeOnModeUpdate(int mode) {
+        switch (mode) {
+            case AudioSystem.MODE_IN_COMMUNICATION:
+            case AudioSystem.MODE_IN_CALL:
+            case AudioSystem.MODE_NORMAL:
+                break;
+            case AudioSystem.MODE_RINGTONE:
+                // not changing anything for ringtone
+                return;
+            case AudioSystem.MODE_CURRENT:
+            case AudioSystem.MODE_INVALID:
+            default:
+                // don't know what to do in this case, better bail
+                return;
+        }
+
+        int streamType = getBluetoothContextualVolumeStream(mode);
+
+        // Currently, DEVICE_OUT_BLE_HEADSET is the only output type for LE_AUDIO profile.
+        // (See AudioDeviceBroker#createBtDeviceInfo())
+        int index = mStreamStates[streamType].getIndex(AudioSystem.DEVICE_OUT_BLE_HEADSET);
+        int maxIndex = mStreamStates[streamType].getMaxIndex();
+
+        if (DEBUG_VOL) {
+            Log.d(TAG, "setLeAudioVolumeOnModeUpdate postSetLeAudioVolumeIndex index="
+                    + index + " maxIndex=" + maxIndex + " streamType=" + streamType);
+        }
+        mDeviceBroker.postSetLeAudioVolumeIndex(index, maxIndex, streamType);
+    }
+
     private void setStreamVolume(int streamType, int index, int flags, String callingPackage,
             String caller, String attributionTag, int uid,
             boolean hasModifyAudioSettings) {
@@ -5207,6 +5237,10 @@ public class AudioService extends IAudioService.Stub
                 // change of mode may require volume to be re-applied on some devices
                 updateAbsVolumeMultiModeDevices(previousMode, mode);
 
+                // Forcefully set LE audio volume as a workaround, since the value of 'device'
+                // is not DEVICE_OUT_BLE_* even when BLE is connected.
+                setLeAudioVolumeOnModeUpdate(mode);
+
                 // when entering RINGTONE, IN_CALL or IN_COMMUNICATION mode, clear all SCO
                 // connections not started by the application changing the mode when pid changes
                 mDeviceBroker.postSetModeOwnerPid(pid, mode);