device/hid/hid_connection_mac.h

   1 // Copyright (c) 2014 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 #ifndef DEVICE_HID_HID_CONNECTION_MAC_H_
   6 #define DEVICE_HID_HID_CONNECTION_MAC_H_
   7
   8 #include <CoreFoundation/CoreFoundation.h>
   9 #include <IOKit/hid/IOHIDManager.h>
  10
  11 #include <queue>
  12
  13 #include "base/mac/foundation_util.h"
  14 #include "base/memory/ref_counted.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/threading/thread_checker.h"
  17 #include "device/hid/hid_connection.h"
  18 #include "device/hid/hid_device_info.h"
  19
  20 namespace base {
  21 class MessageLoopProxy;
  22 }
  23
  24 namespace net {
  25 class IOBuffer;
  26 }
  27
  28 namespace device {
  29
  30 class HidConnectionMac : public HidConnection {
  31  public:
  32   explicit HidConnectionMac(HidDeviceInfo device_info);
  33
  34   virtual void Read(scoped_refptr<net::IOBufferWithSize> buffer,
  35                     const IOCallback& callback) OVERRIDE;
  36   virtual void Write(uint8_t report_id,
  37                      scoped_refptr<net::IOBufferWithSize> buffer,
  38                      const IOCallback& callback) OVERRIDE;
  39   virtual void GetFeatureReport(uint8_t report_id,
  40                                 scoped_refptr<net::IOBufferWithSize> buffer,
  41                                 const IOCallback& callback) OVERRIDE;
  42   virtual void SendFeatureReport(uint8_t report_id,
  43                                  scoped_refptr<net::IOBufferWithSize> buffer,
  44                                  const IOCallback& callback) OVERRIDE;
  45
  46  private:
  47   virtual ~HidConnectionMac();
  48
  49   static void InputReportCallback(void* context,
  50                                   IOReturn result,
  51                                   void* sender,
  52                                   IOHIDReportType type,
  53                                   uint32_t report_id,
  54                                   uint8_t* report_bytes,
  55                                   CFIndex report_length);
  56   void ProcessReadQueue();
  57   void ProcessInputReport(IOHIDReportType type,
  58                           scoped_refptr<net::IOBufferWithSize> buffer);
  59
  60   void WriteReport(IOHIDReportType type,
  61                    uint8_t report_id,
  62                    scoped_refptr<net::IOBufferWithSize> buffer,
  63                    const IOCallback& callback);
  64
  65   scoped_refptr<base::MessageLoopProxy> message_loop_;
  66
  67   base::ScopedCFTypeRef<IOHIDDeviceRef> device_;
  68   scoped_ptr<uint8_t, base::FreeDeleter> inbound_buffer_;
  69
  70   std::queue<PendingHidReport> pending_reports_;
  71   std::queue<PendingHidRead> pending_reads_;
  72
  73   base::ThreadChecker thread_checker_;
  74
  75   DISALLOW_COPY_AND_ASSIGN(HidConnectionMac);
  76 };
  77
  78
  79 }  // namespace device
  80
  81 #endif  // DEVICE_HID_HID_CONNECTION_MAC_H_