1/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file.
4 */
5
6/* From ppb_gamepad.idl modified Tue Apr 16 09:04:34 2013. */
7
8#ifndef PPAPI_C_PPB_GAMEPAD_H_
9#define PPAPI_C_PPB_GAMEPAD_H_
10
11#include "ppapi/c/pp_bool.h"
12#include "ppapi/c/pp_instance.h"
13#include "ppapi/c/pp_macros.h"
14#include "ppapi/c/pp_stdint.h"
15
16#define PPB_GAMEPAD_INTERFACE_1_0 "PPB_Gamepad;1.0"
17#define PPB_GAMEPAD_INTERFACE PPB_GAMEPAD_INTERFACE_1_0
18
19/**
20 * @file
21 * This file defines the <code>PPB_Gamepad</code> interface, which
22 * provides access to gamepad devices.
23 */
24
25
26/**
27 * @addtogroup Structs
28 * @{
29 */
30/**
31 * The data for one gamepad device.
32 */
33struct PP_GamepadSampleData {
34  /**
35   * Number of valid elements in the |axes| array.
36   */
37  uint32_t axes_length;
38  /**
39   * Normalized values for the axes, indices valid up to |axes_length|-1. Axis
40   * values range from -1..1, and are in order of "importance".
41   */
42  float axes[16];
43  /**
44   * Number of valid elements in the |buttons| array.
45   */
46  uint32_t buttons_length;
47  /**
48   * Normalized values for the buttons, indices valid up to |buttons_length|
49   * - 1. Button values range from 0..1, and are in order of importance.
50   */
51  float buttons[32];
52  /**
53   * Monotonically increasing value that is incremented when the data have
54   * been updated.
55   */
56  double timestamp;
57  /**
58   * Identifier for the type of device/manufacturer.
59   */
60  uint16_t id[128];
61  /**
62   * Is there a gamepad connected at this index? If this is false, no other
63   * data in this structure is valid.
64   */
65  PP_Bool connected;
66  /* Padding to make the struct the same size between 64 and 32. */
67  char unused_pad_[4];
68};
69PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadSampleData, 472);
70
71/**
72 * The data for all gamepads connected to the system.
73 */
74struct PP_GamepadsSampleData {
75  /**
76   * Number of valid elements in the |items| array.
77   */
78  uint32_t length;
79  /* Padding to make the struct the same size between 64 and 32. */
80  char unused_pad_[4];
81  /**
82   * Data for an individual gamepad device connected to the system.
83   */
84  struct PP_GamepadSampleData items[4];
85};
86PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_GamepadsSampleData, 1896);
87/**
88 * @}
89 */
90
91/**
92 * @addtogroup Interfaces
93 * @{
94 */
95/**
96 * The <code>PPB_Gamepad</code> interface allows retrieving data from
97 * gamepad/joystick devices that are connected to the system.
98 */
99struct PPB_Gamepad_1_0 {
100  /**
101   * Samples the current state of the available gamepads.
102   */
103  void (*Sample)(PP_Instance instance, struct PP_GamepadsSampleData* data);
104};
105
106typedef struct PPB_Gamepad_1_0 PPB_Gamepad;
107/**
108 * @}
109 */
110
111#endif  /* PPAPI_C_PPB_GAMEPAD_H_ */
112
113