diff --git a/include/input/KeyCharacterMap.h b/include/input/KeyCharacterMap.h
index e70666a..3f0914b 100644
--- a/include/input/KeyCharacterMap.h
+++ b/include/input/KeyCharacterMap.h
@@ -124,6 +124,11 @@
      * the mapping in some way. */
     status_t mapKey(int32_t scanCode, int32_t usageCode, int32_t* outKeyCode) const;
 
+    /* Tries to find a replacement key code for a given key code and meta state
+     * in character map. */
+    void tryRemapKey(int32_t scanCode, int32_t metaState,
+            int32_t* outKeyCode, int32_t* outMetaState) const;
+
 #if HAVE_ANDROID_OS
     /* Reads a key map from a parcel. */
     static sp<KeyCharacterMap> readFromParcel(Parcel* parcel);
@@ -151,6 +156,9 @@
 
         /* The fallback keycode if the key is not handled. */
         int32_t fallbackKeyCode;
+
+        /* The replacement keycode if the key has to be replaced outright. */
+        int32_t replacementKeyCode;
     };
 
     struct Key {
diff --git a/include/input/Keyboard.h b/include/input/Keyboard.h
index 519bb22..d4903e9 100644
--- a/include/input/Keyboard.h
+++ b/include/input/Keyboard.h
@@ -88,6 +88,13 @@
 extern int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState);
 
 /**
+ * Normalizes the meta state such that if either the left or right modifier
+ * meta state bits are set then the result will also include the universal
+ * bit for that modifier.
+ */
+extern int32_t normalizeMetaState(int32_t oldMetaState);
+
+/**
  * Returns true if a key is a meta key like ALT or CAPS_LOCK.
  */
 extern bool isMetaKey(int32_t keyCode);