Revise gamepad interface

ppapi/c/dev/ppb_gamepad_dev.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 dev/ppb_gamepad_dev.idl modified Tue Feb  7 12:49:02 2012. */
+/* From dev/ppb_gamepad_dev.idl modified Mon Feb 27 13:23:13 2012. */
 
 #ifndef PPAPI_C_DEV_PPB_GAMEPAD_DEV_H_
 #define PPAPI_C_DEV_PPB_GAMEPAD_DEV_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_DEV_INTERFACE_0_1 "PPB_Gamepad(Dev);0.1"
-#define PPB_GAMEPAD_DEV_INTERFACE PPB_GAMEPAD_DEV_INTERFACE_0_1
+#define PPB_GAMEPAD_DEV_INTERFACE_0_2 "PPB_Gamepad(Dev);0.2"
+#define PPB_GAMEPAD_DEV_INTERFACE PPB_GAMEPAD_DEV_INTERFACE_0_2
 
 /**
  * @file
  * This file defines the <code>PPB_Gamepad_Dev</code> interface, which
  * provides access to gamepad devices.
  */
 
 
-#pragma pack(push, 1)
-
 /**
  * @addtogroup Structs
  * @{
  */
 /**
  * The data for one gamepad device.
  */
-struct PP_GamepadData_Dev {
-  /**
-   * Is there a gamepad connected at this index? If this is false, no other
-   * data in this structure is valid.
-   */
-  char connected;
-  /**
-   * String identifier for the type of device/manufacturer.
-   */
-  uint16_t id[128];
-  /**
-   * Monotonically increasing value that is incremented when the data have
-   * been updated.
-   */
-  uint64_t timestamp;
+struct PP_GamepadSampleData_Dev {
   /**
    * Number of valid elements in the |axes| array.
    */
   uint32_t axes_length;
   /**
-   * Normalized values for the axes, indices valid up to |axesLength|-1. Axis
+   * 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 |buttonsLength|
+   * 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];
+  /**
+   * 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];
+  /**
+   * 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_Dev, 472);
 
 /**
  * The data for all gamepads connected to the system.
  */
-struct PP_GamepadsData_Dev {
+struct PP_GamepadsSampleData_Dev {
   /**
    * 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_GamepadData_Dev items[4];
+  struct PP_GamepadSampleData_Dev items[4];
 };
+PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadsSampleData_Dev, 1896);
 /**
  * @}
  */
 
-#pragma pack(pop)
-
 /**
  * @addtogroup Interfaces
  * @{
  */
 /**
  * The <code>PPB_Gamepad_Dev</code> interface allows retrieving data from
  * gamepad/joystick devices that are connected to the system.
  */
-struct PPB_Gamepad_Dev_0_1 {
+struct PPB_Gamepad_Dev_0_2 {
   /**
    * Samples the current state of the connected gamepads.
    */
-  void (*SampleGamepads)(PP_Instance instance,
-                         struct PP_GamepadsData_Dev* data);
+  void (*Sample)(PP_Instance instance, struct PP_GamepadsSampleData_Dev* data);
 };
 
-typedef struct PPB_Gamepad_Dev_0_1 PPB_Gamepad_Dev;
+typedef struct PPB_Gamepad_Dev_0_2 PPB_Gamepad_Dev;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_DEV_PPB_GAMEPAD_DEV_H_ */