input_common: Add support for joycon input reports

1 files changed, 77 insertions, 0 deletions

diff --git a/src/input_common/helpers/joycon_protocol/poller.h b/src/input_common/helpers/joycon_protocol/poller.h
new file mode 100644
index 000000000..fff681d0a
--- /dev/null
+++ b/src/input_common/helpers/joycon_protocol/poller.h
@@ -0,0 +1,77 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+// Based on dkms-hid-nintendo implementation, CTCaer joycon toolkit and dekuNukem reverse
+// engineering https://github.com/nicman23/dkms-hid-nintendo/blob/master/src/hid-nintendo.c
+// https://github.com/CTCaer/jc_toolkit
+// https://github.com/dekuNukem/Nintendo_Switch_Reverse_Engineering
+
+#pragma once
+
+#include <functional>
+#include <span>
+
+#include "input_common/helpers/joycon_protocol/joycon_types.h"
+
+namespace InputCommon::Joycon {
+
+// Handles input packages and triggers the corresponding input events
+class JoyconPoller {
+public:
+    JoyconPoller(ControllerType device_type_, JoyStickCalibration left_stick_calibration_,
+                 JoyStickCalibration right_stick_calibration_,
+                 MotionCalibration motion_calibration_);
+
+    void SetCallbacks(const Joycon::JoyconCallbacks& callbacks_);
+
+    /// Handles data from passive packages
+    void ReadPassiveMode(std::span<u8> buffer);
+
+    /// Handles data from active packages
+    void ReadActiveMode(std::span<u8> buffer, const MotionStatus& motion_status);
+
+    /// Handles data from nfc or ir packages
+    void ReadNfcIRMode(std::span<u8> buffer, const MotionStatus& motion_status);
+
+    void UpdateColor(const Color& color);
+
+private:
+    void UpdateActiveLeftPadInput(const InputReportActive& input,
+                                  const MotionStatus& motion_status);
+    void UpdateActiveRightPadInput(const InputReportActive& input,
+                                   const MotionStatus& motion_status);
+    void UpdateActiveProPadInput(const InputReportActive& input, const MotionStatus& motion_status);
+
+    void UpdatePasiveLeftPadInput(const InputReportPassive& buffer);
+    void UpdatePasiveRightPadInput(const InputReportPassive& buffer);
+    void UpdatePasiveProPadInput(const InputReportPassive& buffer);
+
+    /// Returns a calibrated joystick axis from raw axis data
+    f32 GetAxisValue(u16 raw_value, Joycon::JoyStickAxisCalibration calibration) const;
+
+    /// Returns a calibrated accelerometer axis from raw motion data
+    f32 GetAccelerometerValue(s16 raw, const MotionSensorCalibration& cal,
+                              AccelerometerSensitivity sensitivity) const;
+
+    /// Returns a calibrated gyro axis from raw motion data
+    f32 GetGyroValue(s16 raw_value, const MotionSensorCalibration& cal,
+                     GyroSensitivity sensitivity) const;
+
+    /// Returns a raw motion value from a buffer
+    s16 GetRawIMUValues(size_t sensor, size_t axis, const InputReportActive& input) const;
+
+    /// Returns motion data from a buffer
+    MotionData GetMotionInput(const InputReportActive& input,
+                              const MotionStatus& motion_status) const;
+
+    ControllerType device_type{};
+
+    // Device calibration
+    JoyStickCalibration left_stick_calibration{};
+    JoyStickCalibration right_stick_calibration{};
+    MotionCalibration motion_calibration{};
+
+    Joycon::JoyconCallbacks callbacks{};
+};
+
+} // namespace InputCommon::Joycon