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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 CONTENT_BROWSER_GAMEPAD_RAW_INPUT_DATA_FETCHER_WIN_H_ |
| 6 #define CONTENT_BROWSER_GAMEPAD_RAW_INPUT_DATA_FETCHER_WIN_H_ |
| 7 |
| 8 #include "build/build_config.h" |
| 9 |
| 10 #include <stdlib.h> |
| 11 #include <Unknwn.h> |
| 12 #include <WinDef.h> |
| 13 #include <windows.h> |
| 14 |
| 15 #include <hidsdi.h> |
| 16 #include <map> |
| 17 #include <vector> |
| 18 |
| 19 #include "base/memory/scoped_ptr.h" |
| 20 #include "base/memory/weak_ptr.h" |
| 21 #include "base/message_loop/message_loop.h" |
| 22 #include "base/scoped_native_library.h" |
| 23 #include "base/win/message_window.h" |
| 24 #include "content/browser/gamepad/gamepad_data_fetcher.h" |
| 25 #include "content/browser/gamepad/gamepad_standard_mappings.h" |
| 26 #include "third_party/WebKit/public/platform/WebGamepads.h" |
| 27 |
| 28 namespace content { |
| 29 |
| 30 struct RawGamepadAxis { |
| 31 HIDP_VALUE_CAPS caps; |
| 32 float value; |
| 33 }; |
| 34 |
| 35 struct RawGamepadInfo { |
| 36 HANDLE handle; |
| 37 scoped_ptr<uint8[]> ppd_buffer; |
| 38 PHIDP_PREPARSED_DATA preparsed_data; |
| 39 |
| 40 uint32_t report_id; |
| 41 uint32_t vendor_id; |
| 42 uint32_t product_id; |
| 43 |
| 44 wchar_t id[blink::WebGamepad::idLengthCap]; |
| 45 |
| 46 uint32_t button_caps_length; |
| 47 scoped_ptr<HIDP_BUTTON_CAPS[]> button_caps; |
| 48 |
| 49 uint32_t buttons_length; |
| 50 bool buttons[blink::WebGamepad::buttonsLengthCap]; |
| 51 |
| 52 uint32_t axes_length; |
| 53 RawGamepadAxis axes[blink::WebGamepad::axesLengthCap]; |
| 54 }; |
| 55 |
| 56 class RawInputDataFetcher |
| 57 : public base::SupportsWeakPtr<RawInputDataFetcher>, |
| 58 public base::MessageLoop::DestructionObserver { |
| 59 public: |
| 60 explicit RawInputDataFetcher(); |
| 61 ~RawInputDataFetcher(); |
| 62 |
| 63 // DestructionObserver overrides. |
| 64 virtual void WillDestroyCurrentMessageLoop() OVERRIDE; |
| 65 |
| 66 bool Available() { return rawinput_available_; } |
| 67 void StartMonitor(); |
| 68 void StopMonitor(); |
| 69 |
| 70 std::vector<RawGamepadInfo*> EnumerateDevices(); |
| 71 RawGamepadInfo* GetGamepadInfo(HANDLE handle); |
| 72 |
| 73 private: |
| 74 RawGamepadInfo* ParseGamepadInfo(HANDLE hDevice); |
| 75 void UpdateGamepad(RAWINPUT* input, RawGamepadInfo* gamepad_info); |
| 76 // Handles WM_INPUT messages. |
| 77 LRESULT OnInput(HRAWINPUT input_handle); |
| 78 // Handles messages received by |window_|. |
| 79 bool HandleMessage(UINT message, |
| 80 WPARAM wparam, |
| 81 LPARAM lparam, |
| 82 LRESULT* result); |
| 83 RAWINPUTDEVICE* GetRawInputDevices(DWORD flags); |
| 84 void ClearControllers(); |
| 85 |
| 86 // Function types we use from hid.dll. |
| 87 typedef NTSTATUS (__stdcall *HidPGetCapsFunc)( |
| 88 PHIDP_PREPARSED_DATA PreparsedData, PHIDP_CAPS Capabilities); |
| 89 typedef NTSTATUS (__stdcall *HidPGetButtonCapsFunc)( |
| 90 HIDP_REPORT_TYPE ReportType, PHIDP_BUTTON_CAPS ButtonCaps, |
| 91 PUSHORT ButtonCapsLength, PHIDP_PREPARSED_DATA PreparsedData); |
| 92 typedef NTSTATUS (__stdcall *HidPGetValueCapsFunc)( |
| 93 HIDP_REPORT_TYPE ReportType, PHIDP_VALUE_CAPS ValueCaps, |
| 94 PUSHORT ValueCapsLength, PHIDP_PREPARSED_DATA PreparsedData); |
| 95 typedef NTSTATUS (__stdcall *HidPGetUsagesFunc)( |
| 96 HIDP_REPORT_TYPE ReportType, USAGE UsagePage, USHORT LinkCollection, |
| 97 PUSAGE UsageList, PULONG UsageLength, PHIDP_PREPARSED_DATA PreparsedData, |
| 98 PCHAR Report, ULONG ReportLength); |
| 99 typedef NTSTATUS (__stdcall *HidPGetUsageValueFunc)( |
| 100 HIDP_REPORT_TYPE ReportType, USAGE UsagePage, USHORT LinkCollection, |
| 101 USAGE Usage, PULONG UsageValue, PHIDP_PREPARSED_DATA PreparsedData, |
| 102 PCHAR Report, ULONG ReportLength); |
| 103 typedef NTSTATUS (__stdcall *HidPGetScaledUsageValueFunc)( |
| 104 HIDP_REPORT_TYPE ReportType, USAGE UsagePage, USHORT LinkCollection, |
| 105 USAGE Usage, PLONG UsageValue, PHIDP_PREPARSED_DATA PreparsedData, |
| 106 PCHAR Report, ULONG ReportLength); |
| 107 typedef BOOLEAN (__stdcall *HidDGetStringFunc)( |
| 108 HANDLE HidDeviceObject, PVOID Buffer, ULONG BufferLength); |
| 109 |
| 110 // Get functions from dynamically loaded hid.dll. Returns true if loading was |
| 111 // successful. |
| 112 bool GetHidDllFunctions(); |
| 113 |
| 114 base::ScopedNativeLibrary hid_dll_; |
| 115 scoped_ptr<base::win::MessageWindow> window_; |
| 116 bool rawinput_available_; |
| 117 bool filter_xinput_; |
| 118 bool events_monitored_; |
| 119 |
| 120 std::map<HANDLE, RawGamepadInfo*> controllers_; |
| 121 |
| 122 // Function pointers to HID functionality, retrieved in |
| 123 // |GetHidDllFunctions|. |
| 124 HidPGetCapsFunc hidp_get_caps_; |
| 125 HidPGetButtonCapsFunc hidp_get_button_caps_; |
| 126 HidPGetValueCapsFunc hidp_get_value_caps_; |
| 127 HidPGetUsagesFunc hidp_get_usages_; |
| 128 HidPGetUsageValueFunc hidp_get_usage_value_; |
| 129 HidPGetScaledUsageValueFunc hidp_get_scaled_usage_value_; |
| 130 HidDGetStringFunc hidd_get_product_string_; |
| 131 |
| 132 DISALLOW_COPY_AND_ASSIGN(RawInputDataFetcher); |
| 133 }; |
| 134 |
| 135 } // namespace content |
| 136 |
| 137 #endif // CONTENT_BROWSER_GAMEPAD_RAW_INPUT_DATA_FETCHER_WIN_H_ |
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