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| 1 // Copyright 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_WIN_H_ | |
| 6 #define DEVICE_HID_HID_CONNECTION_WIN_H_ | |
| 7 | |
| 8 #include <set> | |
| 9 #include <windows.h> | |
| 10 | |
| 11 #include "base/callback.h" | |
| 12 #include "base/memory/ref_counted.h" | |
| 13 #include "base/message_loop/message_loop.h" | |
| 14 #include "base/threading/thread_checker.h" | |
| 15 #include "base/win/object_watcher.h" | |
| 16 #include "device/hid/hid_connection.h" | |
| 17 #include "device/hid/hid_device_info.h" | |
| 18 #include "net/base/io_buffer.h" | |
| 19 | |
| 20 namespace device { | |
| 21 | |
| 22 class HidConnectionWin : public HidConnection { | |
| 23 public: | |
| 24 struct PendingTransfer : public base::RefCounted<PendingTransfer>, | |
| 25 public base::win::ObjectWatcher::Delegate, | |
| 26 public base::MessageLoop::DestructionObserver { | |
| 27 public: | |
| 28 PendingTransfer(scoped_refptr<HidConnectionWin> conn, | |
| 29 scoped_refptr<net::IOBuffer> target, | |
| 30 scoped_refptr<net::IOBuffer> receiving, | |
| 31 bool is_input, | |
| 32 IOCallback callback); | |
| 33 | |
| 34 void TakeResultFromWindowsAPI(BOOL result); | |
| 35 | |
| 36 OVERLAPPED* GetOverlapped() { return &overlapped_; } | |
| 37 | |
| 38 // Implements base::win::ObjectWatcher::Delegate. | |
| 39 virtual void OnObjectSignaled(HANDLE object) OVERRIDE; | |
| 40 | |
| 41 // Implements base::MessageLoop::DestructionObserver | |
| 42 virtual void WillDestroyCurrentMessageLoop() OVERRIDE; | |
| 43 | |
| 44 | |
| 45 private: | |
| 46 friend class base::RefCounted<PendingTransfer>; | |
| 47 friend class HidConnectionWin; | |
| 48 | |
| 49 virtual ~PendingTransfer(); | |
| 50 | |
| 51 scoped_refptr<HidConnectionWin> conn_; | |
| 52 bool is_input_; | |
| 53 scoped_refptr<net::IOBuffer> target_; | |
| 54 scoped_refptr<net::IOBuffer> receiving_; | |
| 55 IOCallback callback_; | |
| 56 OVERLAPPED overlapped_; | |
| 57 base::win::ScopedHandle event_; | |
| 58 base::win::ObjectWatcher watcher_; | |
| 59 | |
| 60 DISALLOW_COPY_AND_ASSIGN(PendingTransfer); | |
| 61 }; | |
| 62 | |
| 63 HidConnectionWin(HidDeviceInfo device_info); | |
| 64 | |
| 65 virtual void Read(scoped_refptr<net::IOBuffer> buffer, | |
| 66 size_t size, | |
| 67 const IOCallback& callback) OVERRIDE; | |
| 68 virtual void Write(scoped_refptr<net::IOBuffer> buffer, | |
| 69 size_t size, | |
| 70 const IOCallback& callback) OVERRIDE; | |
| 71 virtual void GetFeatureReport(scoped_refptr<net::IOBuffer> buffer, | |
| 72 size_t size, | |
| 73 const IOCallback& callback) OVERRIDE; | |
| 74 virtual void SendFeatureReport(scoped_refptr<net::IOBuffer> buffer, | |
| 75 size_t size, | |
| 76 const IOCallback& callback) OVERRIDE; | |
| 77 | |
| 78 void OnTransferFinished(scoped_refptr<PendingTransfer> transfer); | |
| 79 void OnTransferCanceled(scoped_refptr<PendingTransfer> transfer); | |
| 80 | |
| 81 bool available() const { return available_; } | |
| 82 | |
| 83 private: | |
| 84 ~HidConnectionWin(); | |
| 85 | |
| 86 base::win::ScopedHandle file_; | |
| 87 std::set<scoped_refptr<PendingTransfer> > transfers_; | |
| 88 | |
| 89 DISALLOW_COPY_AND_ASSIGN(HidConnectionWin); | |
| 90 | |
| 91 bool available_; | |
| 92 }; | |
| 93 | |
| 94 } // namespace device | |
| 95 | |
| 96 #endif // DEVICE_HID_HID_CONNECTION_WIN_H_ | |
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