Add video calling setting to TelephonyManager.

We want to add a user setting to enable/disable video calling. This
is a telephony-level setting which the user sets using Telephony's
Call Settings, and applies universally to video calls.

But this setting needs to be accessible in places such as Dialer,
so these changes are to support storing the setting in
TelephonyManager (to be implemented in PhoneInterfaceManager) and
providing access to the setting for applications like Dialer
through TelephonyManager.

+ Add function definitions to ITelephony.
+ Add function wrapper implementations in TelephonyManager.

Bug: 16014284
Change-Id: I1dce8bf5ae4f0ee115698ce9627ba8fc424dd855

2 files changed, 36 insertions, 1 deletions

diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index d3cef4a..7b5234a 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -3528,4 +3528,25 @@ public class TelephonyManager {
         }
         return -1;
     }
+
+    /** @hide */
+    @SystemApi
+    public void enableVideoCalling(boolean enable) {
+        try {
+            getITelephony().enableVideoCalling(enable);
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#enableVideoCalling", e);
+        }
+    }
+
+    /** @hide */
+    @SystemApi
+    public boolean isVideoCallingEnabled() {
+        try {
+            return getITelephony().isVideoCallingEnabled();
+        } catch (RemoteException e) {
+            Log.e(TAG, "Error calling ITelephony#isVideoCallingEnabled", e);
+        }
+        return false;
+    }
 }
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index 58807b2..b4d165c 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -28,7 +28,7 @@ import java.util.List;
 /**
  * Interface used to interact with the phone.  Mostly this is used by the
  * TelephonyManager class.  A few places are still using this directly.
- * Please clean them up if possible and use TelephonyManager insteadl.
+ * Please clean them up if possible and use TelephonyManager instead.
  *
  * {@hide}
  */
@@ -831,4 +831,18 @@ interface ITelephony {
      * @return phone radio type and access technology
      */
     int getRadioAccessFamily(in int phoneId);
+
+    /**
+     * Enables or disables video calling.
+     *
+     * @param enable Whether to enable video calling.
+     */
+    void enableVideoCalling(boolean enable);
+
+    /**
+     * Whether video calling has been enabled by the user.
+     *
+     * @return {@code True} if the user has enabled video calling, {@code false} otherwise.
+     */
+    boolean isVideoCallingEnabled();
 }