blob: 24f3cb0dc73887f34c4dfe21b58257329f5a6d6d [file] [log] [blame]
// 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.
#include <stddef.h>
#include "base/atomicops.h"
#include "base/strings/string16.h"
#include "ppapi/c/ppb_gamepad.h"
#include "ppapi/shared_impl/ppapi_shared_export.h"
namespace device {
class Gamepads;
namespace ppapi {
// TODO(brettw) when we remove the non-IPC-based gamepad implementation, this
// code should all move into the GamepadResource.
#pragma pack(push, 4)
struct WebKitGamepadButton {
bool pressed;
bool touched;
double value;
struct WebKitGamepadVector {
bool notNull;
float x, y, z;
struct WebKitGamepadQuaternion {
bool notNull;
float x, y, z, w;
struct WebKitGamepadPose {
bool notNull;
bool hasOrientation;
bool hasPosition;
WebKitGamepadQuaternion orientation;
WebKitGamepadVector position;
WebKitGamepadVector angularVelocity;
WebKitGamepadVector linearVelocity;
WebKitGamepadVector angularAcceleration;
WebKitGamepadVector linearAcceleration;
enum WebKitGamepadHand {
// This must match the definition of blink::Gamepad. The GamepadHost unit test
// has some compile asserts to validate this.
struct WebKitGamepad {
static const size_t kIdLengthCap = 128;
static const size_t kMappingLengthCap = 16;
static const size_t kAxesLengthCap = 16;
static const size_t kButtonsLengthCap = 32;
// Is there a gamepad connected at this index?
bool connected;
// Device identifier (based on manufacturer, model, etc.).
base::char16 id[kIdLengthCap];
// Monotonically increasing value referring to when the data were last
// updated.
unsigned long long timestamp;
// Number of valid entries in the axes array.
unsigned axes_length;
// Normalized values representing axes, in the range [-1..1].
double axes[kAxesLengthCap];
// Number of valid entries in the buttons array.
unsigned buttons_length;
// Normalized values representing buttons, in the range [0..1].
WebKitGamepadButton buttons[kButtonsLengthCap];
// Mapping type (for example "standard")
base::char16 mapping[kMappingLengthCap];
WebKitGamepadPose pose;
WebKitGamepadHand hand;
// ID of the VRDisplay this gamepad is associated with, if any.
unsigned display_id;
// This must match the definition of blink::Gamepads. The GamepadHost unit
// test has some compile asserts to validate this.
struct WebKitGamepads {
static const size_t kItemsLengthCap = 4;
// Gamepad data for N separate gamepad devices.
WebKitGamepad items[kItemsLengthCap];
// This is the structure store in shared memory. It must match
// device::GamepadHardwareBuffer. The GamepadHost unit test has
// some compile asserts to validate this.
struct ContentGamepadHardwareBuffer {
base::subtle::Atomic32 sequence;
WebKitGamepads buffer;
#pragma pack(pop)
PPAPI_SHARED_EXPORT void ConvertWebKitGamepadData(
const WebKitGamepads& webkit_data,
PP_GamepadsSampleData* output_data);
PPAPI_SHARED_EXPORT void ConvertDeviceGamepadData(
const device::Gamepads& device_data,
PP_GamepadsSampleData* output_data);
} // namespace ppapi