Parse LED mappings in keylayout files. DO NOT MERGE

Change-Id: I2b34939cc0df256e6b872502ea93f2884b4c8334

4 files changed, 65 insertions, 2 deletions

diff --git a/include/input/Input.h b/include/input/Input.h
index be79c59..69977ca 100644
--- a/include/input/Input.h
+++ b/include/input/Input.h
@@ -65,6 +65,31 @@ enum {
     AINPUT_SOURCE_SWITCH = 0x80000000,
 };
 
+enum {
+    /**
+     * Constants for LEDs. Hidden from the API since we don't actually expose a way to interact
+     * with LEDs to developers
+     *
+     * NOTE: If you add LEDs here, you must also add them to KeycodeLabels.h
+     */
+
+    ALED_NUM_LOCK = 0x00,
+    ALED_CAPS_LOCK = 0x01,
+    ALED_SCROLL_LOCK = 0x02,
+    ALED_COMPOSE = 0x03,
+    ALED_KANA = 0x04,
+    ALED_SLEEP = 0x05,
+    ALED_SUSPEND = 0x06,
+    ALED_MUTE = 0x07,
+    ALED_MISC = 0x08,
+    ALED_MAIL = 0x09,
+    ALED_CHARGING = 0x0a,
+    ALED_CONTROLLER_1 = 0x10,
+    ALED_CONTROLLER_2 = 0x11,
+    ALED_CONTROLLER_3 = 0x12,
+    ALED_CONTROLLER_4 = 0x13,
+};
+
 /*
  * SystemUiVisibility constants from View.
  */
diff --git a/include/input/KeyLayoutMap.h b/include/input/KeyLayoutMap.h
index eec11cf..1e8de71 100644
--- a/include/input/KeyLayoutMap.h
+++ b/include/input/KeyLayoutMap.h
@@ -67,6 +67,8 @@ public:
     status_t mapKey(int32_t scanCode, int32_t usageCode,
             int32_t* outKeyCode, uint32_t* outFlags) const;
     status_t findScanCodesForKey(int32_t keyCode, Vector<int32_t>* outScanCodes) const;
+    status_t findScanCodeForLed(int32_t ledCode, int32_t* outScanCode) const;
+    status_t findUsageCodeForLed(int32_t ledCode, int32_t* outUsageCode) const;
 
     status_t mapAxis(int32_t scanCode, AxisInfo* outAxisInfo) const;
 
@@ -79,9 +81,16 @@ private:
         uint32_t flags;
     };
 
+    struct Led {
+        int32_t ledCode;
+    };
+
+
     KeyedVector<int32_t, Key> mKeysByScanCode;
     KeyedVector<int32_t, Key> mKeysByUsageCode;
     KeyedVector<int32_t, AxisInfo> mAxes;
+    KeyedVector<int32_t, Led> mLedsByScanCode;
+    KeyedVector<int32_t, Led> mLedsByUsageCode;
 
     KeyLayoutMap();
 
@@ -99,6 +108,7 @@ private:
     private:
         status_t parseKey();
         status_t parseAxis();
+        status_t parseLed();
     };
 };
 
diff --git a/include/input/Keyboard.h b/include/input/Keyboard.h
index 846cb0c..25b2f07 100644
--- a/include/input/Keyboard.h
+++ b/include/input/Keyboard.h
@@ -94,18 +94,24 @@ extern int32_t getKeyCodeByLabel(const char* label);
 extern uint32_t getKeyFlagByLabel(const char* label);
 
 /**
- * Gets a axis by its short form label, eg. "X".
+ * Gets an axis by its short form label, eg. "X".
  * Returns -1 if unknown.
  */
 extern int32_t getAxisByLabel(const char* label);
 
 /**
- * Gets a axis label by its id.
+ * Gets an axis label by its id.
  * Returns NULL if unknown.
  */
 extern const char* getAxisLabel(int32_t axisId);
 
 /**
+ * Gets an LED by its short form label, eg. "CAPS_LOCK".
+ * Returns -1 if unknown.
+ */
+extern int32_t getLedByLabel(const char* label);
+
+/**
  * Updates a meta state field when a key is pressed or released.
  */
 extern int32_t updateMetaState(int32_t keyCode, bool down, int32_t oldMetaState);
diff --git a/include/input/KeycodeLabels.h b/include/input/KeycodeLabels.h
index c64c5d8..19582e9 100644
--- a/include/input/KeycodeLabels.h
+++ b/include/input/KeycodeLabels.h
@@ -319,4 +319,26 @@ static const KeycodeLabel AXES[] = {
     { NULL, -1 }
 };
 
+static const KeycodeLabel LEDS[] = {
+    { "NUM_LOCK", 0x00 },
+    { "CAPS_LOCK", 0x01 },
+    { "SCROLL_LOCK", 0x02 },
+    { "COMPOSE", 0x03 },
+    { "KANA", 0x04 },
+    { "SLEEP", 0x05 },
+    { "SUSPEND", 0x06 },
+    { "MUTE", 0x07 },
+    { "MISC", 0x08 },
+    { "MAIL", 0x09 },
+    { "CHARGING", 0x0a },
+    { "CONTROLLER_1", 0x10 },
+    { "CONTROLLER_2", 0x11 },
+    { "CONTROLLER_3", 0x12 },
+    { "CONTROLLER_4", 0x13 },
+
+    // NOTE: If you add new LEDs here, you must also add them to Input.h
+
+    { NULL, -1 }
+};
+
 #endif // _LIBINPUT_KEYCODE_LABELS_H