Updating Gamepad API to match latest spec

ppapi/c/ppb_gamepad.h

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-/* From ppb_gamepad.idl modified Tue Apr 16 09:04:34 2013. */
+/* From ppb_gamepad.idl modified Sun Feb  9 16:16:26 2014. */
 
 #ifndef PPAPI_C_PPB_GAMEPAD_H_
 #define PPAPI_C_PPB_GAMEPAD_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_stdint.h"
 
 #define PPB_GAMEPAD_INTERFACE_1_0 "PPB_Gamepad;1.0"
 #define PPB_GAMEPAD_INTERFACE PPB_GAMEPAD_INTERFACE_1_0
 
 /**
  * @file
  * This file defines the <code>PPB_Gamepad</code> interface, which
  * provides access to gamepad devices.
  */
 
 
 /**
  * @addtogroup Structs
  * @{
  */
 /**
+ * The data for one gamepad button.
+ */
+struct PP_GamepadButtonSampleData {
+  /**
+   * Is the button pressed?
+   */
+  PP_Bool pressed;
+  /**
+   * Normalized button value, in the range [0..1].
+   */
+  float value;
+};
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadButtonSampleData, 8);
+
+/**
  * The data for one gamepad device.
  */
 struct PP_GamepadSampleData {
   /**
    * Number of valid elements in the |axes| array.
    */
   uint32_t axes_length;
   /**
    * Normalized values for the axes, indices valid up to |axes_length|-1. Axis
    * values range from -1..1, and are in order of "importance".
    */
   float axes[16];
   /**
    * Number of valid elements in the |buttons| array.
    */
   uint32_t buttons_length;
   /**
    * Normalized values for the buttons, indices valid up to |buttons_length|
    * - 1. Button values range from 0..1, and are in order of importance.
    */
-  float buttons[32];
+  struct PP_GamepadButtonSampleData buttons[32];
   /**
    * Monotonically increasing value that is incremented when the data have
    * been updated.
    */
   double timestamp;
   /**
    * Identifier for the type of device/manufacturer.
    */
   uint16_t id[128];
   /**
+   * Mapping type (for example "standard")
+   */
+  uint16_t mapping[16];
+  /**
    * Is there a gamepad connected at this index? If this is false, no other
    * data in this structure is valid.
    */
   PP_Bool connected;
   /* Padding to make the struct the same size between 64 and 32. */
   char unused_pad_[4];
 };
-PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadSampleData, 472);
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadSampleData, 632);
 
 /**
  * The data for all gamepads connected to the system.
  */
 struct PP_GamepadsSampleData {
   /**
    * Number of valid elements in the |items| array.
    */
   uint32_t length;
   /* Padding to make the struct the same size between 64 and 32. */
   char unused_pad_[4];
   /**
    * Data for an individual gamepad device connected to the system.
    */
   struct PP_GamepadSampleData items[4];
 };
-PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadsSampleData, 1896);
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadsSampleData, 2536);
 /**
  * @}
  */
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * The <code>PPB_Gamepad</code> interface allows retrieving data from
  * gamepad/joystick devices that are connected to the system.
  */
 struct PPB_Gamepad_1_0 {
   /**
    * Samples the current state of the available gamepads.
    */
   void (*Sample)(PP_Instance instance, struct PP_GamepadsSampleData* data);
 };
 
 typedef struct PPB_Gamepad_1_0 PPB_Gamepad;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_GAMEPAD_H_ */