| // Copyright (c) 2012 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. |
| |
| #include "content/browser/gamepad/gamepad_platform_data_fetcher_win.h" |
| |
| #include "base/debug/trace_event.h" |
| #include "base/strings/stringprintf.h" |
| #include "base/win/windows_version.h" |
| #include "content/common/gamepad_hardware_buffer.h" |
| #include "content/common/gamepad_messages.h" |
| |
| namespace content { |
| |
| using namespace blink; |
| |
| namespace { |
| |
| // See http://goo.gl/5VSJR. These are not available in all versions of the |
| // header, but they can be returned from the driver, so we define our own |
| // versions here. |
| static const BYTE kDeviceSubTypeGamepad = 1; |
| static const BYTE kDeviceSubTypeWheel = 2; |
| static const BYTE kDeviceSubTypeArcadeStick = 3; |
| static const BYTE kDeviceSubTypeFlightStick = 4; |
| static const BYTE kDeviceSubTypeDancePad = 5; |
| static const BYTE kDeviceSubTypeGuitar = 6; |
| static const BYTE kDeviceSubTypeGuitarAlternate = 7; |
| static const BYTE kDeviceSubTypeDrumKit = 8; |
| static const BYTE kDeviceSubTypeGuitarBass = 11; |
| static const BYTE kDeviceSubTypeArcadePad = 19; |
| |
| float NormalizeXInputAxis(SHORT value) { |
| return ((value + 32768.f) / 32767.5f) - 1.f; |
| } |
| |
| const WebUChar* const GamepadSubTypeName(BYTE sub_type) { |
| switch (sub_type) { |
| case kDeviceSubTypeGamepad: return L"GAMEPAD"; |
| case kDeviceSubTypeWheel: return L"WHEEL"; |
| case kDeviceSubTypeArcadeStick: return L"ARCADE_STICK"; |
| case kDeviceSubTypeFlightStick: return L"FLIGHT_STICK"; |
| case kDeviceSubTypeDancePad: return L"DANCE_PAD"; |
| case kDeviceSubTypeGuitar: return L"GUITAR"; |
| case kDeviceSubTypeGuitarAlternate: return L"GUITAR_ALTERNATE"; |
| case kDeviceSubTypeDrumKit: return L"DRUM_KIT"; |
| case kDeviceSubTypeGuitarBass: return L"GUITAR_BASS"; |
| case kDeviceSubTypeArcadePad: return L"ARCADE_PAD"; |
| default: return L"<UNKNOWN>"; |
| } |
| } |
| |
| } // namespace |
| |
| GamepadPlatformDataFetcherWin::GamepadPlatformDataFetcherWin() |
| : xinput_dll_(base::FilePath(FILE_PATH_LITERAL("xinput1_3.dll"))), |
| xinput_available_(GetXInputDllFunctions()) { |
| for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) |
| pad_state_[i].status = DISCONNECTED; |
| |
| raw_input_fetcher_.reset(new RawInputDataFetcher()); |
| raw_input_fetcher_->StartMonitor(); |
| } |
| |
| GamepadPlatformDataFetcherWin::~GamepadPlatformDataFetcherWin() { |
| raw_input_fetcher_->StopMonitor(); |
| } |
| |
| int GamepadPlatformDataFetcherWin::FirstAvailableGamepadId() const { |
| for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { |
| if (pad_state_[i].status == DISCONNECTED) |
| return i; |
| } |
| return -1; |
| } |
| |
| bool GamepadPlatformDataFetcherWin::HasXInputGamepad(int index) const { |
| for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { |
| if (pad_state_[i].status == XINPUT_CONNECTED && |
| pad_state_[i].xinput_index == index) |
| return true; |
| } |
| return false; |
| } |
| |
| bool GamepadPlatformDataFetcherWin::HasRawInputGamepad( |
| const HANDLE handle) const { |
| for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { |
| if (pad_state_[i].status == RAWINPUT_CONNECTED && |
| pad_state_[i].raw_input_handle == handle) |
| return true; |
| } |
| return false; |
| } |
| |
| void GamepadPlatformDataFetcherWin::EnumerateDevices( |
| WebGamepads* pads) { |
| TRACE_EVENT0("GAMEPAD", "EnumerateDevices"); |
| |
| // Mark all disconnected pads DISCONNECTED. |
| for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { |
| if (!pads->items[i].connected) |
| pad_state_[i].status = DISCONNECTED; |
| } |
| |
| for (size_t i = 0; i < XUSER_MAX_COUNT; ++i) { |
| if (HasXInputGamepad(i)) |
| continue; |
| int pad_index = FirstAvailableGamepadId(); |
| if (pad_index == -1) |
| return; // We can't add any more gamepads. |
| WebGamepad& pad = pads->items[pad_index]; |
| if (xinput_available_ && GetXInputPadConnectivity(i, &pad)) { |
| pad_state_[pad_index].status = XINPUT_CONNECTED; |
| pad_state_[pad_index].xinput_index = i; |
| pad_state_[pad_index].mapper = NULL; |
| pads->length++; |
| } |
| } |
| |
| if (raw_input_fetcher_->Available()) { |
| std::vector<RawGamepadInfo*> raw_inputs = |
| raw_input_fetcher_->EnumerateDevices(); |
| for (size_t i = 0; i < raw_inputs.size(); ++i) { |
| RawGamepadInfo* gamepad = raw_inputs[i]; |
| if (HasRawInputGamepad(gamepad->handle)) |
| continue; |
| int pad_index = FirstAvailableGamepadId(); |
| if (pad_index == -1) |
| return; |
| WebGamepad& pad = pads->items[pad_index]; |
| pad.connected = true; |
| PadState& state = pad_state_[pad_index]; |
| state.status = RAWINPUT_CONNECTED; |
| state.raw_input_handle = gamepad->handle; |
| |
| std::string vendor = base::StringPrintf("%04x", gamepad->vendor_id); |
| std::string product = base::StringPrintf("%04x", gamepad->product_id); |
| state.mapper = GetGamepadStandardMappingFunction(vendor, product); |
| |
| swprintf(pad.id, WebGamepad::idLengthCap, |
| L"%ls (%lsVendor: %04x Product: %04x)", |
| gamepad->id, state.mapper ? L"STANDARD GAMEPAD " : L"", |
| gamepad->vendor_id, gamepad->product_id); |
| |
| if (state.mapper) |
| swprintf(pad.mapping, WebGamepad::mappingLengthCap, L"standard"); |
| else |
| pad.mapping[0] = 0; |
| |
| pads->length++; |
| } |
| } |
| } |
| |
| |
| void GamepadPlatformDataFetcherWin::GetGamepadData(WebGamepads* pads, |
| bool devices_changed_hint) { |
| TRACE_EVENT0("GAMEPAD", "GetGamepadData"); |
| |
| if (!xinput_available_ && |
| !raw_input_fetcher_->Available()) { |
| pads->length = 0; |
| return; |
| } |
| |
| // A note on XInput devices: |
| // If we got notification that system devices have been updated, then |
| // run GetCapabilities to update the connected status and the device |
| // identifier. It can be slow to do to both GetCapabilities and |
| // GetState on unconnected devices, so we want to avoid a 2-5ms pause |
| // here by only doing this when the devices are updated (despite |
| // documentation claiming it's OK to call it any time). |
| if (devices_changed_hint) |
| EnumerateDevices(pads); |
| |
| for (size_t i = 0; i < WebGamepads::itemsLengthCap; ++i) { |
| // We rely on device_changed and GetCapabilities to tell us that |
| // something's been connected, but we will mark as disconnected if |
| // Get___PadState returns that we've lost the pad. |
| if (!pads->items[i].connected) |
| continue; |
| |
| if (pad_state_[i].status == XINPUT_CONNECTED) |
| GetXInputPadData(i, &pads->items[i]); |
| else if (pad_state_[i].status == RAWINPUT_CONNECTED) |
| GetRawInputPadData(i, &pads->items[i]); |
| } |
| } |
| |
| void GamepadPlatformDataFetcherWin::PauseHint(bool pause) { |
| if (pause) |
| raw_input_fetcher_->StopMonitor(); |
| else |
| raw_input_fetcher_->StartMonitor(); |
| } |
| |
| bool GamepadPlatformDataFetcherWin::GetXInputPadConnectivity( |
| int i, |
| WebGamepad* pad) const { |
| DCHECK(pad); |
| TRACE_EVENT1("GAMEPAD", "GetXInputPadConnectivity", "id", i); |
| XINPUT_CAPABILITIES caps; |
| DWORD res = xinput_get_capabilities_(i, XINPUT_FLAG_GAMEPAD, &caps); |
| if (res == ERROR_DEVICE_NOT_CONNECTED) { |
| pad->connected = false; |
| return false; |
| } else { |
| pad->connected = true; |
| swprintf(pad->id, |
| WebGamepad::idLengthCap, |
| L"Xbox 360 Controller (XInput STANDARD %ls)", |
| GamepadSubTypeName(caps.SubType)); |
| swprintf(pad->mapping, WebGamepad::mappingLengthCap, L"standard"); |
| return true; |
| } |
| } |
| |
| void GamepadPlatformDataFetcherWin::GetXInputPadData( |
| int i, |
| WebGamepad* pad) { |
| XINPUT_STATE state; |
| memset(&state, 0, sizeof(XINPUT_STATE)); |
| TRACE_EVENT_BEGIN1("GAMEPAD", "XInputGetState", "id", i); |
| DWORD dwResult = xinput_get_state_(pad_state_[i].xinput_index, &state); |
| TRACE_EVENT_END1("GAMEPAD", "XInputGetState", "id", i); |
| |
| if (dwResult == ERROR_SUCCESS) { |
| pad->timestamp = state.dwPacketNumber; |
| pad->buttonsLength = 0; |
| #define ADD(b) pad->buttons[pad->buttonsLength].pressed = \ |
| (state.Gamepad.wButtons & (b)) != 0; \ |
| pad->buttons[pad->buttonsLength++].value = \ |
| ((state.Gamepad.wButtons & (b)) ? 1.f : 0.f); |
| ADD(XINPUT_GAMEPAD_A); |
| ADD(XINPUT_GAMEPAD_B); |
| ADD(XINPUT_GAMEPAD_X); |
| ADD(XINPUT_GAMEPAD_Y); |
| ADD(XINPUT_GAMEPAD_LEFT_SHOULDER); |
| ADD(XINPUT_GAMEPAD_RIGHT_SHOULDER); |
| pad->buttons[pad->buttonsLength].pressed = |
| state.Gamepad.bLeftTrigger >= XINPUT_GAMEPAD_TRIGGER_THRESHOLD; |
| pad->buttons[pad->buttonsLength++].value = |
| state.Gamepad.bLeftTrigger / 255.f; |
| pad->buttons[pad->buttonsLength].pressed = |
| state.Gamepad.bRightTrigger >= XINPUT_GAMEPAD_TRIGGER_THRESHOLD; |
| pad->buttons[pad->buttonsLength++].value = |
| state.Gamepad.bRightTrigger / 255.f; |
| ADD(XINPUT_GAMEPAD_BACK); |
| ADD(XINPUT_GAMEPAD_START); |
| ADD(XINPUT_GAMEPAD_LEFT_THUMB); |
| ADD(XINPUT_GAMEPAD_RIGHT_THUMB); |
| ADD(XINPUT_GAMEPAD_DPAD_UP); |
| ADD(XINPUT_GAMEPAD_DPAD_DOWN); |
| ADD(XINPUT_GAMEPAD_DPAD_LEFT); |
| ADD(XINPUT_GAMEPAD_DPAD_RIGHT); |
| #undef ADD |
| pad->axesLength = 0; |
| // XInput are +up/+right, -down/-left, we want -up/-left. |
| pad->axes[pad->axesLength++] = NormalizeXInputAxis(state.Gamepad.sThumbLX); |
| pad->axes[pad->axesLength++] = -NormalizeXInputAxis(state.Gamepad.sThumbLY); |
| pad->axes[pad->axesLength++] = NormalizeXInputAxis(state.Gamepad.sThumbRX); |
| pad->axes[pad->axesLength++] = -NormalizeXInputAxis(state.Gamepad.sThumbRY); |
| } else { |
| pad->connected = false; |
| } |
| } |
| |
| void GamepadPlatformDataFetcherWin::GetRawInputPadData( |
| int index, |
| WebGamepad* pad) { |
| RawGamepadInfo* gamepad = raw_input_fetcher_->GetGamepadInfo( |
| pad_state_[index].raw_input_handle); |
| if (!gamepad) { |
| pad->connected = false; |
| return; |
| } |
| |
| WebGamepad raw_pad = *pad; |
| |
| raw_pad.timestamp = gamepad->report_id; |
| raw_pad.buttonsLength = gamepad->buttons_length; |
| raw_pad.axesLength = gamepad->axes_length; |
| |
| for (unsigned int i = 0; i < raw_pad.buttonsLength; i++) { |
| raw_pad.buttons[i].pressed = gamepad->buttons[i]; |
| raw_pad.buttons[i].value = gamepad->buttons[i] ? 1.0 : 0.0; |
| } |
| |
| for (unsigned int i = 0; i < raw_pad.axesLength; i++) |
| raw_pad.axes[i] = gamepad->axes[i].value; |
| |
| // Copy to the current state to the output buffer, using the mapping |
| // function, if there is one available. |
| if (pad_state_[index].mapper) |
| pad_state_[index].mapper(raw_pad, pad); |
| else |
| *pad = raw_pad; |
| } |
| |
| bool GamepadPlatformDataFetcherWin::GetXInputDllFunctions() { |
| xinput_get_capabilities_ = NULL; |
| xinput_get_state_ = NULL; |
| xinput_enable_ = reinterpret_cast<XInputEnableFunc>( |
| xinput_dll_.GetFunctionPointer("XInputEnable")); |
| if (!xinput_enable_) |
| return false; |
| xinput_get_capabilities_ = reinterpret_cast<XInputGetCapabilitiesFunc>( |
| xinput_dll_.GetFunctionPointer("XInputGetCapabilities")); |
| if (!xinput_get_capabilities_) |
| return false; |
| xinput_get_state_ = reinterpret_cast<XInputGetStateFunc>( |
| xinput_dll_.GetFunctionPointer("XInputGetState")); |
| if (!xinput_get_state_) |
| return false; |
| xinput_enable_(true); |
| return true; |
| } |
| |
| } // namespace content |