diff --git a/headers/media_plugin/media/cas/CasAPI.h b/headers/media_plugin/media/cas/CasAPI.h
index 4de314d..c87ee56 100644
--- a/headers/media_plugin/media/cas/CasAPI.h
+++ b/headers/media_plugin/media/cas/CasAPI.h
@@ -48,6 +48,14 @@
         uint8_t *data,
         size_t size);
 
+typedef void (*CasPluginCallbackExt)(
+        void *appData,
+        int32_t event,
+        int32_t arg,
+        uint8_t *data,
+        size_t size,
+        const CasSessionId *sessionId);
+
 struct CasFactory {
     CasFactory() {}
     virtual ~CasFactory() {}
@@ -67,6 +75,13 @@
             CasPluginCallback callback,
             CasPlugin **plugin) = 0;
 
+    // Construct a new extend instance of a CasPlugin given a CA_system_id
+    virtual status_t createPlugin(
+            int32_t CA_system_id,
+            void *appData,
+            CasPluginCallbackExt callback,
+            CasPlugin **plugin) = 0;
+
 private:
     CasFactory(const CasFactory &);
     CasFactory &operator=(const CasFactory &); /* NOLINT */
@@ -110,7 +125,15 @@
             int32_t arg,
             const CasData &eventData) = 0;
 
-    // Native implementation of the MediaCas Java API provision method.
+    // Deliver an session event to the CasPlugin. The format of the event is
+    // specific to the CA scheme and is opaque to the framework.
+    virtual status_t sendSessionEvent(
+            const CasSessionId &sessionId,
+            int32_t event,
+            int32_t arg,
+            const CasData &eventData) = 0;
+
+   // Native implementation of the MediaCas Java API provision method.
     virtual status_t provision(
             const String8 &provisionString) = 0;