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/* 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.
*/
/**
* This file defines the <code>PPB_Gamepad</code> interface, which
* provides access to gamepad devices.
*/
[generate_thunk]
label Chrome {
M19 = 1.0
};
/**
* The data for one gamepad device.
*/
[assert_size(472)]
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_t[16] axes;
/**
* 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_t[32] buttons;
/**
* Monotonically increasing value that is incremented when the data have
* been updated.
*/
double_t timestamp;
/**
* Identifier for the type of device/manufacturer.
*/
uint16_t[128] id;
/**
* 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. */
int8_t[4] unused_pad_;
};
/**
* The data for all gamepads connected to the system.
*/
[assert_size(1896)]
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. */
int8_t[4] unused_pad_;
/**
* Data for an individual gamepad device connected to the system.
*/
PP_GamepadSampleData[4] items;
};
/**
* The <code>PPB_Gamepad</code> interface allows retrieving data from
* gamepad/joystick devices that are connected to the system.
*/
[version=1.0, macro="PPB_GAMEPAD_INTERFACE", singleton]
interface PPB_Gamepad {
/**
* Samples the current state of the available gamepads.
*/
[always_set_output_parameters]
void Sample(
[in] PP_Instance instance,
[out] PP_GamepadsSampleData data);
};
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