IMS: Support for Possible Call Session Handover

Adding the callSessionMayHandover API that allows
for the lower layers to indicate that the call session
may handover based on actions taken by the user/UI
layer.
The API provides current and target RAT information
pertaining to the possible handover.

Bug: 62489988
Test: Manual
Change-Id: I006462ce5688bb99a94d5135574fb2c17878685a

diff --git a/telephony/java/com/android/ims/internal/IImsCallSessionListener.aidl b/telephony/java/com/android/ims/internal/IImsCallSessionListener.aidl
index ad59c1d..831ab12 100644 (file)
--- a/telephony/java/com/android/ims/internal/IImsCallSessionListener.aidl
+++ b/telephony/java/com/android/ims/internal/IImsCallSessionListener.aidl
@@ -106,6 +106,8 @@ interface IImsCallSessionListener {
             in int srcAccessTech, in int targetAccessTech, in ImsReasonInfo reasonInfo);
     void callSessionHandoverFailed(in IImsCallSession session,
             in int srcAccessTech, in int targetAccessTech, in ImsReasonInfo reasonInfo);
+    void callSessionMayHandover(in IImsCallSession session,
+            in int srcAccessTech, in int targetAccessTech);
 
     /**
      * Notifies the TTY mode change by remote party.