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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <atomic>
#include <span>
#include <boost/serialization/array.hpp>
#include "common/bit_field.h"
#include "common/swap.h"
#include "core/frontend/input.h"
#include "core/hle/service/ir/ir_user.h"
namespace Core {
struct TimingEventType;
class Timing;
class Movie;
} // namespace Core
namespace Service::IR {
struct ExtraHIDResponse {
union {
BitField<0, 8, u32> header;
BitField<8, 12, u32> c_stick_x;
BitField<20, 12, u32> c_stick_y;
} c_stick;
union {
BitField<0, 5, u8> battery_level;
BitField<5, 1, u8> zl_not_held;
BitField<6, 1, u8> zr_not_held;
BitField<7, 1, u8> r_not_held;
} buttons;
u8 unknown;
};
static_assert(sizeof(ExtraHIDResponse) == 6, "HID status response has wrong size!");
/**
* An IRDevice emulating Circle Pad Pro or New 3DS additional HID hardware.
* This device sends periodic udates at a rate configured by the 3DS, and sends calibration data if
* requested.
*/
class ExtraHID final : public IRDevice {
public:
explicit ExtraHID(SendFunc send_func, Core::Timing& timing, Core::Movie& movie);
~ExtraHID();
void OnConnect() override;
void OnDisconnect() override;
void OnReceive(std::span<const u8> data) override;
/// Requests input devices reload from current settings. Called when the input settings change.
void RequestInputDevicesReload();
private:
void SendHIDStatus();
void HandleConfigureHIDPollingRequest(std::span<const u8> request);
void HandleReadCalibrationDataRequest(std::span<const u8> request);
void LoadInputDevices();
Core::Timing& timing;
Core::Movie& movie;
u8 hid_period;
Core::TimingEventType* hid_polling_callback_id;
std::array<u8, 0x40> calibration_data;
std::unique_ptr<Input::ButtonDevice> zl;
std::unique_ptr<Input::ButtonDevice> zr;
std::unique_ptr<Input::AnalogDevice> c_stick;
std::atomic<bool> is_device_reload_pending;
template <class Archive>
void serialize(Archive& ar, const unsigned int) {
ar& hid_period;
ar& calibration_data; // This isn't writeable for now, but might be in future
if (Archive::is_loading::value) {
LoadInputDevices(); // zl, zr, c_stick are loaded here
}
}
friend class boost::serialization::access;
};
} // namespace Service::IR
BOOST_CLASS_EXPORT_KEY(Service::IR::ExtraHID)
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