Add soft_audio_configuration_changed_cb_ to handle the streamMap changed

Based on the stream status and Bluetooth Audio Session to switch the
different configuration_changed_cb_ notifcation.

audio_configuration_changed_cb_ for the context type handover case
soft_audio_configuration_changed_cb_ for the streamMap changed during
media stream case

Bug: 231084798
Test: LE audio offload later join and disappear with downmix enable
Change-Id: I199c2b765b128875fb2c66abb1a500e4a6c820b7
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
index 0782c82..881c6c1 100644
--- a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
@@ -95,6 +95,25 @@
   }
 
   /***
+   * The control API for the bluetooth_audio module to get current
+   * LE audio connection map
+   ***/
+  static const AudioConfiguration GetLeAudioConnectionMap(
+      const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if ((session_type ==
+             SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+         session_type ==
+             SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) &&
+        session_ptr != nullptr) {
+      return session_ptr->GetLeAudioConnectionMap();
+    }
+
+    return AudioConfiguration(LeAudioConfiguration{});
+  }
+
+  /***
    * Those control APIs for the bluetooth_audio module to start / suspend /
   stop
    * stream, to check position, and to update metadata.