Multi-A2DP support - add a new internal API to suppress Audio Noisy intent

The new API setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent()
is similar to the existing setBluetoothA2dpDeviceConnectionState()
except that it takes one extra argument that indicates whether the
AudioManager.ACTION_AUDIO_BECOMING_NOISY intent will be sent:

  setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
      ..., boolean suppressNoisyIntent)

This API is needed so the Active A2DP Sink device can be changed
while audio is streaming, and the audio continues playing on the new
Active Device.

Bug: 69269748
Test: Manual: multiple connected A2DP devices, and selecting each as
      the Active Device.

Change-Id: I75766a58d9e6b42b3ce68bd9ad3a7a72ca5a1023
(cherry picked from commit 82e06463f2)

media/java/android/media/AudioManager.java

@@ -3628,6 +3628,33 @@ public class AudioManager {
         return delay;
     }
 
+     /**
+     * Indicate A2DP source or sink connection state change and eventually suppress
+     * the {@link AudioManager.ACTION_AUDIO_BECOMING_NOISY} intent.
+     * @param device Bluetooth device connected/disconnected
+     * @param state  new connection state (BluetoothProfile.STATE_xxx)
+     * @param profile profile for the A2DP device
+     * (either {@link android.bluetooth.BluetoothProfile.A2DP} or
+     * {@link android.bluetooth.BluetoothProfile.A2DP_SINK})
+     * @param suppressNoisyIntent if true the
+     * {@link AudioManager.ACTION_AUDIO_BECOMING_NOISY} intent will not be sent.
+     * @return a delay in ms that the caller should wait before broadcasting
+     * BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED intent.
+     * {@hide}
+     */
+    public int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
+                BluetoothDevice device, int state, int profile, boolean suppressNoisyIntent) {
+        final IAudioService service = getService();
+        int delay = 0;
+        try {
+            delay = service.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(device,
+                state, profile, suppressNoisyIntent);
+        } catch (RemoteException e) {
+            throw e.rethrowFromSystemServer();
+        }
+        return delay;
+    }
+
      /**
      * Indicate A2DP device configuration has changed.
      * @param device Bluetooth device whose configuration has changed.

media/java/android/media/IAudioService.aidl

@@ -203,5 +203,8 @@ interface IAudioService {
 
     oneway void playerHasOpPlayAudio(in int piid, in boolean hasOpPlayAudio);
 
+    int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(in BluetoothDevice device,
+            int state, int profile, boolean suppressNoisyIntent);
+
     // WARNING: read warning at top of file, it is recommended to add new methods at the end
 }

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

@@ -4102,23 +4102,31 @@ public class AudioService extends IAudioService.Stub
     }
 
     public int setBluetoothA2dpDeviceConnectionState(BluetoothDevice device, int state, int profile)
+    {
+        return setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(
+                device, state, profile, false /* suppressNoisyIntent */);
+    }
+
+    public int setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent(BluetoothDevice device,
+                int state, int profile, boolean suppressNoisyIntent)
     {
         if (mAudioHandler.hasMessages(MSG_SET_A2DP_SINK_CONNECTION_STATE, device)) {
             return 0;
         }
         return setBluetoothA2dpDeviceConnectionStateInt(
-                device, state, profile, AudioSystem.DEVICE_NONE);
+                device, state, profile, suppressNoisyIntent, AudioSystem.DEVICE_NONE);
     }
 
     public int setBluetoothA2dpDeviceConnectionStateInt(
-            BluetoothDevice device, int state, int profile, int musicDevice)
+            BluetoothDevice device, int state, int profile, boolean suppressNoisyIntent,
+            int musicDevice)
     {
         int delay;
         if (profile != BluetoothProfile.A2DP && profile != BluetoothProfile.A2DP_SINK) {
             throw new IllegalArgumentException("invalid profile " + profile);
         }
         synchronized (mConnectedDevices) {
-            if (profile == BluetoothProfile.A2DP) {
+            if (profile == BluetoothProfile.A2DP && !suppressNoisyIntent) {
                 int intState = (state == BluetoothA2dp.STATE_CONNECTED) ? 1 : 0;
                 delay = checkSendBecomingNoisyIntent(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP,
                         intState, musicDevice);
@@ -5368,7 +5376,7 @@ public class AudioService extends IAudioService.Stub
                    // consistent with audio policy manager state
                    setBluetoothA2dpDeviceConnectionStateInt(
                            btDevice, BluetoothA2dp.STATE_DISCONNECTED, BluetoothProfile.A2DP,
-                           musicDevice);
+                           false /* suppressNoisyIntent */, musicDevice);
                }
             }
         }