Migrating majority of gamepad from content/browser/ to device/

content/browser/gamepad/xbox_data_fetcher_mac.h

-// Copyright 2013 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_XBOX_DATA_FETCHER_MAC_H_
-#define CONTENT_BROWSER_GAMEPAD_XBOX_DATA_FETCHER_MAC_H_
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <IOKit/IOKitLib.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include <memory>
-#include <set>
-
-#include "base/mac/scoped_cftyperef.h"
-#include "base/mac/scoped_ioobject.h"
-#include "base/mac/scoped_ioplugininterface.h"
-#include "base/macros.h"
-
-class XboxController {
- public:
-  enum ControllerType {
-    UNKNOWN_CONTROLLER,
-    XBOX_360_CONTROLLER,
-    XBOX_ONE_CONTROLLER
-  };
-
-  enum LEDPattern {
-    LED_OFF = 0,
-
-    // 2 quick flashes, then a series of slow flashes (about 1 per second).
-    LED_FLASH = 1,
-
-    // Flash three times then hold the LED on. This is the standard way to tell
-    // the player which player number they are.
-    LED_FLASH_TOP_LEFT = 2,
-    LED_FLASH_TOP_RIGHT = 3,
-    LED_FLASH_BOTTOM_LEFT = 4,
-    LED_FLASH_BOTTOM_RIGHT = 5,
-
-    // Simply turn on the specified LED and turn all other LEDs off.
-    LED_HOLD_TOP_LEFT = 6,
-    LED_HOLD_TOP_RIGHT = 7,
-    LED_HOLD_BOTTOM_LEFT = 8,
-    LED_HOLD_BOTTOM_RIGHT = 9,
-
-    LED_ROTATE = 10,
-
-    LED_FLASH_FAST = 11,
-    LED_FLASH_SLOW = 12,  // Flash about once per 3 seconds
-
-    // Flash alternating LEDs for a few seconds, then flash all LEDs about once
-    // per second
-    LED_ALTERNATE_PATTERN = 13,
-
-    // 14 is just another boring flashing speed.
-
-    // Flash all LEDs once then go black.
-    LED_FLASH_ONCE = 15,
-
-    LED_NUM_PATTERNS
-  };
-
-  struct Data {
-    bool buttons[15];
-    float triggers[2];
-    float axes[4];
-  };
-
-  class Delegate {
-   public:
-    virtual void XboxControllerGotData(XboxController* controller,
-                                       const Data& data) = 0;
-    virtual void XboxControllerError(XboxController* controller) = 0;
-  };
-
-  explicit XboxController(Delegate* delegate_);
-  virtual ~XboxController();
-
-  bool OpenDevice(io_service_t service);
-
-  void SetLEDPattern(LEDPattern pattern);
-
-  UInt32 location_id() { return location_id_; }
-  int GetVendorId() const;
-  int GetProductId() const;
-  ControllerType GetControllerType() const;
-
- private:
-  static void WriteComplete(void* context, IOReturn result, void* arg0);
-  static void GotData(void* context, IOReturn result, void* arg0);
-
-  void ProcessXbox360Packet(size_t length);
-  void ProcessXboxOnePacket(size_t length);
-  void QueueRead();
-
-  void IOError();
-
-  void WriteXboxOneInit();
-
-  // Handle for the USB device. IOUSBDeviceStruct320 is the latest version of
-  // the device API that is supported on Mac OS 10.6.
-  base::mac::ScopedIOPluginInterface<struct IOUSBDeviceStruct320> device_;
-
-  // Handle for the interface on the device which sends button and analog data.
-  // The other interfaces (for the ChatPad and headset) are ignored.
-  base::mac::ScopedIOPluginInterface<struct IOUSBInterfaceStruct300> interface_;
-
-  bool device_is_open_;
-  bool interface_is_open_;
-
-  base::ScopedCFTypeRef<CFRunLoopSourceRef> source_;
-
-  // This will be set to the max packet size reported by the interface, which
-  // is 32 bytes. I would have expected USB to do message framing itself, but
-  // somehow we still sometimes (rarely!) get packets off the interface which
-  // aren't correctly framed. The 360 controller frames its packets with a 2
-  // byte header (type, total length) so we can reframe the packet data
-  // ourselves.
-  uint16_t read_buffer_size_;
-  std::unique_ptr<uint8_t[]> read_buffer_;
-
-  // The pattern that the LEDs on the device are currently displaying, or
-  // LED_NUM_PATTERNS if unknown.
-  LEDPattern led_pattern_;
-
-  UInt32 location_id_;
-
-  Delegate* delegate_;
-
-  ControllerType controller_type_;
-  int read_endpoint_;
-  int control_endpoint_;
-
-  DISALLOW_COPY_AND_ASSIGN(XboxController);
-};
-
-class XboxDataFetcher : public XboxController::Delegate {
- public:
-  class Delegate {
-   public:
-    virtual void XboxDeviceAdd(XboxController* device) = 0;
-    virtual void XboxDeviceRemove(XboxController* device) = 0;
-    virtual void XboxValueChanged(XboxController* device,
-                                  const XboxController::Data& data) = 0;
-  };
-
-  explicit XboxDataFetcher(Delegate* delegate);
-  virtual ~XboxDataFetcher();
-
-  bool RegisterForNotifications();
-  bool RegisterForDeviceNotifications(
-    int vendor_id,
-    int product_id,
-    base::mac::ScopedIOObject<io_iterator_t>* added_iter,
-    base::mac::ScopedIOObject<io_iterator_t>* removed_iter);
-  void UnregisterFromNotifications();
-
-  XboxController* ControllerForLocation(UInt32 location_id);
-
- private:
-  static void DeviceAdded(void* context, io_iterator_t iterator);
-  static void DeviceRemoved(void* context, io_iterator_t iterator);
-  void AddController(XboxController* controller);
-  void RemoveController(XboxController* controller);
-  void RemoveControllerByLocationID(uint32_t id);
-  void XboxControllerGotData(XboxController* controller,
-                             const XboxController::Data& data) override;
-  void XboxControllerError(XboxController* controller) override;
-
-  Delegate* delegate_;
-
-  std::set<XboxController*> controllers_;
-
-  bool listening_;
-
-  // port_ owns source_, so this doesn't need to be a ScopedCFTypeRef, but we
-  // do need to maintain a reference to it so we can invalidate it.
-  CFRunLoopSourceRef source_;
-  IONotificationPortRef port_;
-  base::mac::ScopedIOObject<io_iterator_t> xbox_360_device_added_iter_;
-  base::mac::ScopedIOObject<io_iterator_t> xbox_360_device_removed_iter_;
-  base::mac::ScopedIOObject<io_iterator_t> xbox_one_device_added_iter_;
-  base::mac::ScopedIOObject<io_iterator_t> xbox_one_device_removed_iter_;
-
-  DISALLOW_COPY_AND_ASSIGN(XboxDataFetcher);
-};
-
-#endif  // CONTENT_BROWSER_GAMEPAD_XBOX_DATA_FETCHER_MAC_H_