| // Copyright 2018 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 "raw_input_gamepad_device_win.h" |
| |
| namespace device { |
| |
| namespace { |
| |
| float NormalizeAxis(long value, long min, long max) { |
| return (2.f * (value - min) / static_cast<float>(max - min)) - 1.f; |
| } |
| |
| unsigned long GetBitmask(unsigned short bits) { |
| return (1 << bits) - 1; |
| } |
| |
| const uint32_t kAxisMinimumUsageNumber = 0x30; |
| const uint32_t kGameControlsUsagePage = 0x05; |
| const uint32_t kButtonUsagePage = 0x09; |
| |
| // Blacklisted vendor IDs. |
| const uint32_t kVendorOculus = 0x2833; |
| const uint32_t kVendorBlue = 0xb58e; |
| |
| } // namespace |
| |
| RawInputGamepadDeviceWin::RawInputGamepadDeviceWin( |
| HANDLE device_handle, |
| int source_id, |
| HidDllFunctionsWin* hid_functions) |
| : handle_(device_handle), |
| source_id_(source_id), |
| hid_functions_(hid_functions) { |
| ::ZeroMemory(buttons_, sizeof(buttons_)); |
| ::ZeroMemory(axes_, sizeof(axes_)); |
| |
| if (hid_functions_->IsValid()) |
| is_valid_ = QueryDeviceInfo(); |
| |
| if (is_valid_ && |
| Dualshock4ControllerWin::IsDualshock4(vendor_id_, product_id_)) { |
| dualshock4_ = std::make_unique<Dualshock4ControllerWin>(handle_); |
| } |
| } |
| |
| RawInputGamepadDeviceWin::~RawInputGamepadDeviceWin() = default; |
| |
| // static |
| bool RawInputGamepadDeviceWin::IsGamepadUsageId(uint16_t usage) { |
| return usage == kGenericDesktopJoystick || usage == kGenericDesktopGamePad || |
| usage == kGenericDesktopMultiAxisController; |
| } |
| |
| void RawInputGamepadDeviceWin::DoShutdown() { |
| if (dualshock4_) |
| dualshock4_->Shutdown(); |
| dualshock4_ = nullptr; |
| } |
| |
| void RawInputGamepadDeviceWin::UpdateGamepad(RAWINPUT* input) { |
| DCHECK(hid_functions_->IsValid()); |
| NTSTATUS status; |
| |
| report_id_++; |
| |
| // Query button state. |
| if (buttons_length_ > 0) { |
| // Clear the button state |
| ::ZeroMemory(buttons_, sizeof(buttons_)); |
| ULONG buttons_length = 0; |
| |
| hid_functions_->HidPGetUsagesEx()( |
| HidP_Input, 0, nullptr, &buttons_length, preparsed_data_, |
| reinterpret_cast<PCHAR>(input->data.hid.bRawData), |
| input->data.hid.dwSizeHid); |
| |
| std::unique_ptr<USAGE_AND_PAGE[]> usages( |
| new USAGE_AND_PAGE[buttons_length]); |
| status = hid_functions_->HidPGetUsagesEx()( |
| HidP_Input, 0, usages.get(), &buttons_length, preparsed_data_, |
| reinterpret_cast<PCHAR>(input->data.hid.bRawData), |
| input->data.hid.dwSizeHid); |
| |
| if (status == HIDP_STATUS_SUCCESS) { |
| // Set each reported button to true. |
| for (uint32_t j = 0; j < buttons_length; j++) { |
| int32_t button_index = usages[j].Usage - 1; |
| if (usages[j].UsagePage == kButtonUsagePage && button_index >= 0 && |
| button_index < static_cast<int>(Gamepad::kButtonsLengthCap)) { |
| buttons_[button_index] = true; |
| } |
| } |
| } |
| } |
| |
| // Query axis state. |
| ULONG axis_value = 0; |
| LONG scaled_axis_value = 0; |
| for (uint32_t i = 0; i < axes_length_; i++) { |
| RawGamepadAxis* axis = &axes_[i]; |
| |
| // If the min is < 0 we have to query the scaled value, otherwise we need |
| // the normal unscaled value. |
| if (axis->caps.LogicalMin < 0) { |
| status = hid_functions_->HidPGetScaledUsageValue()( |
| HidP_Input, axis->caps.UsagePage, 0, axis->caps.Range.UsageMin, |
| &scaled_axis_value, preparsed_data_, |
| reinterpret_cast<PCHAR>(input->data.hid.bRawData), |
| input->data.hid.dwSizeHid); |
| if (status == HIDP_STATUS_SUCCESS) { |
| axis->value = NormalizeAxis(scaled_axis_value, axis->caps.PhysicalMin, |
| axis->caps.PhysicalMax); |
| } |
| } else { |
| status = hid_functions_->HidPGetUsageValue()( |
| HidP_Input, axis->caps.UsagePage, 0, axis->caps.Range.UsageMin, |
| &axis_value, preparsed_data_, |
| reinterpret_cast<PCHAR>(input->data.hid.bRawData), |
| input->data.hid.dwSizeHid); |
| if (status == HIDP_STATUS_SUCCESS) { |
| axis->value = NormalizeAxis(axis_value & axis->bitmask, |
| axis->caps.LogicalMin & axis->bitmask, |
| axis->caps.LogicalMax & axis->bitmask); |
| } |
| } |
| } |
| } |
| |
| void RawInputGamepadDeviceWin::ReadPadState(Gamepad* pad) const { |
| DCHECK(pad); |
| |
| pad->timestamp = report_id_; |
| pad->buttons_length = buttons_length_; |
| pad->axes_length = axes_length_; |
| |
| for (unsigned int i = 0; i < buttons_length_; i++) { |
| pad->buttons[i].pressed = buttons_[i]; |
| pad->buttons[i].value = buttons_[i] ? 1.0 : 0.0; |
| } |
| |
| for (unsigned int i = 0; i < axes_length_; i++) |
| pad->axes[i] = axes_[i].value; |
| } |
| |
| bool RawInputGamepadDeviceWin::SupportsVibration() const { |
| return dualshock4_ != nullptr; |
| } |
| |
| void RawInputGamepadDeviceWin::SetVibration(double strong_magnitude, |
| double weak_magnitude) { |
| if (dualshock4_) |
| dualshock4_->SetVibration(strong_magnitude, weak_magnitude); |
| } |
| |
| bool RawInputGamepadDeviceWin::QueryDeviceInfo() { |
| // Fetch HID properties (RID_DEVICE_INFO_HID) for this device. This includes |
| // |vendor_id_|, |product_id_|, |version_number_|, and |usage_|. |
| if (!QueryHidInfo()) |
| return false; |
| |
| // Make sure this device is of a type that we want to observe. |
| if (!IsGamepadUsageId(usage_)) |
| return false; |
| |
| // This is terrible, but the Oculus Rift and some Blue Yeti microphones seem |
| // to think they are gamepads. Filter out any such devices. Oculus Touch is |
| // handled elsewhere. |
| if (vendor_id_ == kVendorOculus || vendor_id_ == kVendorBlue) |
| return false; |
| |
| // Fetch the device's |name_| (RIDI_DEVICENAME). |
| if (!QueryDeviceName()) |
| return false; |
| |
| // Fetch the human-friendly |product_string_|, if available. |
| if (!QueryProductString()) |
| product_string_ = L"Unknown Gamepad"; |
| |
| // Fetch information about the buttons and axes on this device. This sets |
| // |buttons_length_| and |axes_length_| to their correct values and populates |
| // |axes_| with capabilities info. |
| if (!QueryDeviceCapabilities()) |
| return false; |
| |
| // Gamepads must have at least one button or axis. |
| if (buttons_length_ == 0 && axes_length_ == 0) |
| return false; |
| |
| return true; |
| } |
| |
| bool RawInputGamepadDeviceWin::QueryHidInfo() { |
| UINT size = 0; |
| |
| UINT result = |
| ::GetRawInputDeviceInfo(handle_, RIDI_DEVICEINFO, nullptr, &size); |
| if (result == static_cast<UINT>(-1)) { |
| PLOG(ERROR) << "GetRawInputDeviceInfo() failed"; |
| return false; |
| } |
| DCHECK_EQ(0u, result); |
| |
| std::unique_ptr<uint8_t[]> buffer(new uint8_t[size]); |
| result = |
| ::GetRawInputDeviceInfo(handle_, RIDI_DEVICEINFO, buffer.get(), &size); |
| if (result == static_cast<UINT>(-1)) { |
| PLOG(ERROR) << "GetRawInputDeviceInfo() failed"; |
| return false; |
| } |
| DCHECK_EQ(size, result); |
| RID_DEVICE_INFO* device_info = |
| reinterpret_cast<RID_DEVICE_INFO*>(buffer.get()); |
| |
| DCHECK_EQ(device_info->dwType, static_cast<DWORD>(RIM_TYPEHID)); |
| vendor_id_ = device_info->hid.dwVendorId; |
| product_id_ = device_info->hid.dwProductId; |
| version_number_ = device_info->hid.dwVersionNumber; |
| usage_ = device_info->hid.usUsage; |
| |
| return true; |
| } |
| |
| bool RawInputGamepadDeviceWin::QueryDeviceName() { |
| UINT size = 0; |
| |
| UINT result = |
| ::GetRawInputDeviceInfo(handle_, RIDI_DEVICENAME, nullptr, &size); |
| if (result == static_cast<UINT>(-1)) { |
| PLOG(ERROR) << "GetRawInputDeviceInfo() failed"; |
| return false; |
| } |
| DCHECK_EQ(0u, result); |
| |
| std::unique_ptr<wchar_t[]> buffer(new wchar_t[size]); |
| result = |
| ::GetRawInputDeviceInfo(handle_, RIDI_DEVICENAME, buffer.get(), &size); |
| if (result == static_cast<UINT>(-1)) { |
| PLOG(ERROR) << "GetRawInputDeviceInfo() failed"; |
| return false; |
| } |
| DCHECK_EQ(size, result); |
| |
| name_ = buffer.get(); |
| |
| return true; |
| } |
| |
| bool RawInputGamepadDeviceWin::QueryProductString() { |
| DCHECK(hid_functions_); |
| DCHECK(hid_functions_->IsValid()); |
| base::win::ScopedHandle hid_handle(::CreateFile( |
| name_.c_str(), GENERIC_READ | GENERIC_WRITE, |
| FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, NULL, NULL)); |
| if (!hid_handle.IsValid()) |
| return false; |
| product_string_.resize(Gamepad::kIdLengthCap); |
| return hid_functions_->HidDGetProductString()( |
| hid_handle.Get(), &product_string_.front(), Gamepad::kIdLengthCap); |
| } |
| |
| bool RawInputGamepadDeviceWin::QueryDeviceCapabilities() { |
| DCHECK(hid_functions_); |
| DCHECK(hid_functions_->IsValid()); |
| UINT size = 0; |
| |
| UINT result = |
| ::GetRawInputDeviceInfo(handle_, RIDI_PREPARSEDDATA, nullptr, &size); |
| if (result == static_cast<UINT>(-1)) { |
| PLOG(ERROR) << "GetRawInputDeviceInfo() failed"; |
| return false; |
| } |
| DCHECK_EQ(0u, result); |
| |
| ppd_buffer_.reset(new uint8_t[size]); |
| preparsed_data_ = reinterpret_cast<PHIDP_PREPARSED_DATA>(ppd_buffer_.get()); |
| result = ::GetRawInputDeviceInfo(handle_, RIDI_PREPARSEDDATA, |
| ppd_buffer_.get(), &size); |
| if (result == static_cast<UINT>(-1)) { |
| PLOG(ERROR) << "GetRawInputDeviceInfo() failed"; |
| return false; |
| } |
| DCHECK_EQ(size, result); |
| |
| HIDP_CAPS caps; |
| NTSTATUS status = hid_functions_->HidPGetCaps()(preparsed_data_, &caps); |
| DCHECK_EQ(HIDP_STATUS_SUCCESS, status); |
| |
| QueryButtonCapabilities(caps.NumberInputButtonCaps); |
| QueryAxisCapabilities(caps.NumberInputValueCaps); |
| |
| return true; |
| } |
| |
| void RawInputGamepadDeviceWin::QueryButtonCapabilities(uint16_t button_count) { |
| DCHECK(hid_functions_); |
| DCHECK(hid_functions_->IsValid()); |
| if (button_count > 0) { |
| std::unique_ptr<HIDP_BUTTON_CAPS[]> button_caps( |
| new HIDP_BUTTON_CAPS[button_count]); |
| NTSTATUS status = hid_functions_->HidPGetButtonCaps()( |
| HidP_Input, button_caps.get(), &button_count, preparsed_data_); |
| DCHECK_EQ(HIDP_STATUS_SUCCESS, status); |
| |
| for (size_t i = 0; i < button_count; ++i) { |
| if (button_caps[i].Range.UsageMin <= Gamepad::kButtonsLengthCap && |
| button_caps[i].UsagePage == kButtonUsagePage) { |
| size_t max_index = |
| std::min(Gamepad::kButtonsLengthCap, |
| static_cast<size_t>(button_caps[i].Range.UsageMax)); |
| buttons_length_ = std::max(buttons_length_, max_index); |
| } |
| } |
| } |
| } |
| |
| void RawInputGamepadDeviceWin::QueryAxisCapabilities(uint16_t axis_count) { |
| DCHECK(hid_functions_); |
| DCHECK(hid_functions_->IsValid()); |
| std::unique_ptr<HIDP_VALUE_CAPS[]> axes_caps(new HIDP_VALUE_CAPS[axis_count]); |
| hid_functions_->HidPGetValueCaps()(HidP_Input, axes_caps.get(), &axis_count, |
| preparsed_data_); |
| |
| bool mapped_all_axes = true; |
| |
| for (size_t i = 0; i < axis_count; i++) { |
| size_t axis_index = axes_caps[i].Range.UsageMin - kAxisMinimumUsageNumber; |
| if (axis_index < Gamepad::kAxesLengthCap && !axes_[axis_index].active) { |
| axes_[axis_index].caps = axes_caps[i]; |
| axes_[axis_index].value = 0; |
| axes_[axis_index].active = true; |
| axes_[axis_index].bitmask = GetBitmask(axes_caps[i].BitSize); |
| axes_length_ = std::max(axes_length_, axis_index + 1); |
| } else { |
| mapped_all_axes = false; |
| } |
| } |
| |
| if (!mapped_all_axes) { |
| // For axes whose usage puts them outside the standard axesLengthCap range. |
| size_t next_index = 0; |
| for (size_t i = 0; i < axis_count; i++) { |
| size_t usage = axes_caps[i].Range.UsageMin - kAxisMinimumUsageNumber; |
| if (usage >= Gamepad::kAxesLengthCap && |
| axes_caps[i].UsagePage <= kGameControlsUsagePage) { |
| for (; next_index < Gamepad::kAxesLengthCap; ++next_index) { |
| if (!axes_[next_index].active) |
| break; |
| } |
| if (next_index < Gamepad::kAxesLengthCap) { |
| axes_[next_index].caps = axes_caps[i]; |
| axes_[next_index].value = 0; |
| axes_[next_index].active = true; |
| axes_[next_index].bitmask = GetBitmask(axes_caps[i].BitSize); |
| axes_length_ = std::max(axes_length_, next_index + 1); |
| } |
| } |
| |
| if (next_index >= Gamepad::kAxesLengthCap) |
| break; |
| } |
| } |
| } |
| |
| } // namespace device |