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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.
#ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_
#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/memory/scoped_ptr.h"
#include "build/build_config.h"
#include "content/browser/gamepad/gamepad_data_fetcher.h"
#include "content/browser/gamepad/gamepad_standard_mappings.h"
#include "content/browser/gamepad/xbox_data_fetcher_mac.h"
#include "content/common/gamepad_hardware_buffer.h"
#include "third_party/WebKit/public/platform/WebGamepads.h"
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/hid/IOHIDManager.h>
#if defined(__OBJC__)
@class NSArray;
#else
class NSArray;
#endif
namespace content {
class GamepadPlatformDataFetcherMac : public GamepadDataFetcher,
public XboxDataFetcher::Delegate {
public:
GamepadPlatformDataFetcherMac();
~GamepadPlatformDataFetcherMac() override;
void GetGamepadData(blink::WebGamepads* pads,
bool devices_changed_hint) override;
void PauseHint(bool paused) override;
private:
bool enabled_;
base::ScopedCFTypeRef<IOHIDManagerRef> hid_manager_ref_;
static GamepadPlatformDataFetcherMac* InstanceFromContext(void* context);
static void DeviceAddCallback(void* context,
IOReturn result,
void* sender,
IOHIDDeviceRef ref);
static void DeviceRemoveCallback(void* context,
IOReturn result,
void* sender,
IOHIDDeviceRef ref);
static void ValueChangedCallback(void* context,
IOReturn result,
void* sender,
IOHIDValueRef ref);
size_t GetEmptySlot();
size_t GetSlotForDevice(IOHIDDeviceRef device);
size_t GetSlotForXboxDevice(XboxController* device);
void DeviceAdd(IOHIDDeviceRef device);
bool AddButtonsAndAxes(NSArray* elements, size_t slot);
void DeviceRemove(IOHIDDeviceRef device);
void ValueChanged(IOHIDValueRef value);
void XboxDeviceAdd(XboxController* device) override;
void XboxDeviceRemove(XboxController* device) override;
void XboxValueChanged(XboxController* device,
const XboxController::Data& data) override;
void RegisterForNotifications();
void UnregisterFromNotifications();
scoped_ptr<XboxDataFetcher> xbox_fetcher_;
blink::WebGamepads data_;
// Side-band data that's not passed to the consumer, but we need to maintain
// to update data_.
struct AssociatedData {
bool is_xbox;
union {
struct {
IOHIDDeviceRef device_ref;
IOHIDElementRef button_elements[blink::WebGamepad::buttonsLengthCap];
IOHIDElementRef axis_elements[blink::WebGamepad::axesLengthCap];
CFIndex axis_minimums[blink::WebGamepad::axesLengthCap];
CFIndex axis_maximums[blink::WebGamepad::axesLengthCap];
// Function to map from device data to standard layout, if available.
// May be null if no mapping is available.
GamepadStandardMappingFunction mapper;
} hid;
struct {
XboxController* device;
UInt32 location_id;
} xbox;
};
};
AssociatedData associated_[blink::WebGamepads::itemsLengthCap];
DISALLOW_COPY_AND_ASSIGN(GamepadPlatformDataFetcherMac);
};
} // namespace content
#endif // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_MAC_H_
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