1 // Copyright (c) 2012 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_GAMEPAD_PLATFORM_DATA_FETCHER_WIN_H_ 6 #define CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_WIN_H_ 7 8 #include "build/build_config.h" 9 10 #ifndef WIN32_LEAN_AND_MEAN 11 #define WIN32_LEAN_AND_MEAN 12 #endif 13 #include <stdlib.h> 14 #include <Unknwn.h> 15 #include <WinDef.h> 16 #include <windows.h> 17 #include <XInput.h> 18 19 #include "base/basictypes.h" 20 #include "base/compiler_specific.h" 21 #include "base/memory/scoped_ptr.h" 22 #include "base/memory/weak_ptr.h" 23 #include "base/message_loop/message_loop.h" 24 #include "base/scoped_native_library.h" 25 #include "content/browser/gamepad/gamepad_data_fetcher.h" 26 #include "content/browser/gamepad/gamepad_standard_mappings.h" 27 #include "content/browser/gamepad/raw_input_data_fetcher_win.h" 28 #include "third_party/WebKit/public/platform/WebGamepads.h" 29 30 namespace content { 31 32 class GamepadPlatformDataFetcherWin : public GamepadDataFetcher { 33 public: 34 GamepadPlatformDataFetcherWin(); 35 virtual ~GamepadPlatformDataFetcherWin(); 36 virtual void GetGamepadData(blink::WebGamepads* pads, 37 bool devices_changed_hint) OVERRIDE; 38 virtual void PauseHint(bool paused) OVERRIDE; 39 40 private: 41 // XInput-specific implementation for GetGamepadData. 42 bool GetXInputGamepadData(blink::WebGamepads* pads, 43 bool devices_changed_hint); 44 45 // The three function types we use from xinput1_3.dll. 46 typedef void (WINAPI *XInputEnableFunc)(BOOL enable); 47 typedef DWORD (WINAPI *XInputGetCapabilitiesFunc)( 48 DWORD dwUserIndex, DWORD dwFlags, XINPUT_CAPABILITIES* pCapabilities); 49 typedef DWORD (WINAPI *XInputGetStateFunc)( 50 DWORD dwUserIndex, XINPUT_STATE* pState); 51 52 // Get functions from dynamically loaded xinput1_3.dll. We don't use 53 // DELAYLOAD because the import library for Win8 SDK pulls xinput1_4 which 54 // isn't redistributable. Returns true if loading was successful. We include 55 // xinput1_3.dll with Chrome. 56 bool GetXInputDllFunctions(); 57 58 // Scan for connected XInput and DirectInput gamepads. 59 void EnumerateDevices(blink::WebGamepads* pads); 60 bool GetXInputPadConnectivity(int i, blink::WebGamepad* pad) const; 61 62 void GetXInputPadData(int i, blink::WebGamepad* pad); 63 void GetRawInputPadData(int i, blink::WebGamepad* pad); 64 65 int FirstAvailableGamepadId() const; 66 bool HasXInputGamepad(int index) const; 67 bool HasRawInputGamepad(const HANDLE handle) const; 68 69 base::ScopedNativeLibrary xinput_dll_; 70 bool xinput_available_; 71 72 // Function pointers to XInput functionality, retrieved in 73 // |GetXinputDllFunctions|. 74 XInputEnableFunc xinput_enable_; 75 XInputGetCapabilitiesFunc xinput_get_capabilities_; 76 XInputGetStateFunc xinput_get_state_; 77 78 enum PadConnectionStatus { 79 DISCONNECTED, 80 XINPUT_CONNECTED, 81 RAWINPUT_CONNECTED 82 }; 83 84 struct PadState { 85 PadConnectionStatus status; 86 GamepadStandardMappingFunction mapper; 87 88 int xinput_index; // XInput-only 89 HANDLE raw_input_handle; // RawInput-only fields. 90 }; 91 PadState pad_state_[blink::WebGamepads::itemsLengthCap]; 92 93 scoped_ptr<RawInputDataFetcher> raw_input_fetcher_; 94 95 DISALLOW_COPY_AND_ASSIGN(GamepadPlatformDataFetcherWin); 96 }; 97 98 } // namespace content 99 100 #endif // CONTENT_BROWSER_GAMEPAD_GAMEPAD_PLATFORM_DATA_FETCHER_WIN_H_ 101
