eden/src/input_common/gcadapter/gc_poller.cpp
Morph e9e1876e82 input_common: Add VibrationDevice and VibrationDeviceFactory
A vibration device is an input device that returns an unsigned byte as status.
It represents whether the vibration device supports vibration or not.
If the status returns 1, it supports vibration. Otherwise, it does not support vibration.
2020-11-15 23:33:20 -05:00

332 lines
11 KiB
C++

// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <atomic>
#include <list>
#include <mutex>
#include <utility>
#include "common/assert.h"
#include "common/threadsafe_queue.h"
#include "input_common/gcadapter/gc_adapter.h"
#include "input_common/gcadapter/gc_poller.h"
namespace InputCommon {
class GCButton final : public Input::ButtonDevice {
public:
explicit GCButton(u32 port_, s32 button_, const GCAdapter::Adapter* adapter)
: port(port_), button(button_), gcadapter(adapter) {}
~GCButton() override;
bool GetStatus() const override {
if (gcadapter->DeviceConnected(port)) {
return (gcadapter->GetPadState(port).buttons & button) != 0;
}
return false;
}
private:
const u32 port;
const s32 button;
const GCAdapter::Adapter* gcadapter;
};
class GCAxisButton final : public Input::ButtonDevice {
public:
explicit GCAxisButton(u32 port_, u32 axis_, float threshold_, bool trigger_if_greater_,
const GCAdapter::Adapter* adapter)
: port(port_), axis(axis_), threshold(threshold_), trigger_if_greater(trigger_if_greater_),
gcadapter(adapter) {}
bool GetStatus() const override {
if (gcadapter->DeviceConnected(port)) {
const float current_axis_value = gcadapter->GetPadState(port).axis_values.at(axis);
const float axis_value = current_axis_value / 128.0f;
if (trigger_if_greater) {
// TODO: Might be worthwile to set a slider for the trigger threshold. It is
// currently always set to 0.5 in configure_input_player.cpp ZL/ZR HandleClick
return axis_value > threshold;
}
return axis_value < -threshold;
}
return false;
}
private:
const u32 port;
const u32 axis;
float threshold;
bool trigger_if_greater;
const GCAdapter::Adapter* gcadapter;
};
GCButtonFactory::GCButtonFactory(std::shared_ptr<GCAdapter::Adapter> adapter_)
: adapter(std::move(adapter_)) {}
GCButton::~GCButton() = default;
std::unique_ptr<Input::ButtonDevice> GCButtonFactory::Create(const Common::ParamPackage& params) {
const auto button_id = params.Get("button", 0);
const auto port = static_cast<u32>(params.Get("port", 0));
constexpr s32 PAD_STICK_ID = static_cast<s32>(GCAdapter::PadButton::Stick);
// button is not an axis/stick button
if (button_id != PAD_STICK_ID) {
return std::make_unique<GCButton>(port, button_id, adapter.get());
}
// For Axis buttons, used by the binary sticks.
if (button_id == PAD_STICK_ID) {
const int axis = params.Get("axis", 0);
const float threshold = params.Get("threshold", 0.25f);
const std::string direction_name = params.Get("direction", "");
bool trigger_if_greater;
if (direction_name == "+") {
trigger_if_greater = true;
} else if (direction_name == "-") {
trigger_if_greater = false;
} else {
trigger_if_greater = true;
LOG_ERROR(Input, "Unknown direction {}", direction_name);
}
return std::make_unique<GCAxisButton>(port, axis, threshold, trigger_if_greater,
adapter.get());
}
UNREACHABLE();
return nullptr;
}
Common::ParamPackage GCButtonFactory::GetNextInput() const {
Common::ParamPackage params;
GCAdapter::GCPadStatus pad;
auto& queue = adapter->GetPadQueue();
while (queue.Pop(pad)) {
// This while loop will break on the earliest detected button
params.Set("engine", "gcpad");
params.Set("port", static_cast<s32>(pad.port));
if (pad.button != GCAdapter::PadButton::Undefined) {
params.Set("button", static_cast<u16>(pad.button));
}
// For Axis button implementation
if (pad.axis != GCAdapter::PadAxes::Undefined) {
params.Set("axis", static_cast<u8>(pad.axis));
params.Set("button", static_cast<u16>(GCAdapter::PadButton::Stick));
params.Set("threshold", "0.25");
if (pad.axis_value > 0) {
params.Set("direction", "+");
} else {
params.Set("direction", "-");
}
break;
}
}
return params;
}
void GCButtonFactory::BeginConfiguration() {
polling = true;
adapter->BeginConfiguration();
}
void GCButtonFactory::EndConfiguration() {
polling = false;
adapter->EndConfiguration();
}
class GCAnalog final : public Input::AnalogDevice {
public:
explicit GCAnalog(u32 port_, u32 axis_x_, u32 axis_y_, float deadzone_,
const GCAdapter::Adapter* adapter, float range_)
: port(port_), axis_x(axis_x_), axis_y(axis_y_), deadzone(deadzone_), gcadapter(adapter),
range(range_) {}
float GetAxis(u32 axis) const {
if (gcadapter->DeviceConnected(port)) {
std::lock_guard lock{mutex};
const auto axis_value =
static_cast<float>(gcadapter->GetPadState(port).axis_values.at(axis));
return (axis_value) / (100.0f * range);
}
return 0.0f;
}
std::pair<float, float> GetAnalog(u32 analog_axis_x, u32 analog_axis_y) const {
float x = GetAxis(analog_axis_x);
float y = GetAxis(analog_axis_y);
// Make sure the coordinates are in the unit circle,
// otherwise normalize it.
float r = x * x + y * y;
if (r > 1.0f) {
r = std::sqrt(r);
x /= r;
y /= r;
}
return {x, y};
}
std::tuple<float, float> GetStatus() const override {
const auto [x, y] = GetAnalog(axis_x, axis_y);
const float r = std::sqrt((x * x) + (y * y));
if (r > deadzone) {
return {x / r * (r - deadzone) / (1 - deadzone),
y / r * (r - deadzone) / (1 - deadzone)};
}
return {0.0f, 0.0f};
}
bool GetAnalogDirectionStatus(Input::AnalogDirection direction) const override {
const auto [x, y] = GetStatus();
const float directional_deadzone = 0.5f;
switch (direction) {
case Input::AnalogDirection::RIGHT:
return x > directional_deadzone;
case Input::AnalogDirection::LEFT:
return x < -directional_deadzone;
case Input::AnalogDirection::UP:
return y > directional_deadzone;
case Input::AnalogDirection::DOWN:
return y < -directional_deadzone;
}
return false;
}
private:
const u32 port;
const u32 axis_x;
const u32 axis_y;
const float deadzone;
const GCAdapter::Adapter* gcadapter;
const float range;
mutable std::mutex mutex;
};
/// An analog device factory that creates analog devices from GC Adapter
GCAnalogFactory::GCAnalogFactory(std::shared_ptr<GCAdapter::Adapter> adapter_)
: adapter(std::move(adapter_)) {}
/**
* Creates analog device from joystick axes
* @param params contains parameters for creating the device:
* - "port": the nth gcpad on the adapter
* - "axis_x": the index of the axis to be bind as x-axis
* - "axis_y": the index of the axis to be bind as y-axis
*/
std::unique_ptr<Input::AnalogDevice> GCAnalogFactory::Create(const Common::ParamPackage& params) {
const auto port = static_cast<u32>(params.Get("port", 0));
const auto axis_x = static_cast<u32>(params.Get("axis_x", 0));
const auto axis_y = static_cast<u32>(params.Get("axis_y", 1));
const auto deadzone = std::clamp(params.Get("deadzone", 0.0f), 0.0f, 1.0f);
const auto range = std::clamp(params.Get("range", 1.0f), 0.50f, 1.50f);
return std::make_unique<GCAnalog>(port, axis_x, axis_y, deadzone, adapter.get(), range);
}
void GCAnalogFactory::BeginConfiguration() {
polling = true;
adapter->BeginConfiguration();
}
void GCAnalogFactory::EndConfiguration() {
polling = false;
adapter->EndConfiguration();
}
Common::ParamPackage GCAnalogFactory::GetNextInput() {
GCAdapter::GCPadStatus pad;
Common::ParamPackage params;
auto& queue = adapter->GetPadQueue();
while (queue.Pop(pad)) {
if (pad.button != GCAdapter::PadButton::Undefined) {
params.Set("engine", "gcpad");
params.Set("port", static_cast<s32>(pad.port));
params.Set("button", static_cast<u16>(pad.button));
return params;
}
if (pad.axis == GCAdapter::PadAxes::Undefined ||
std::abs(static_cast<float>(pad.axis_value) / 128.0f) < 0.1f) {
continue;
}
// An analog device needs two axes, so we need to store the axis for later and wait for
// a second input event. The axes also must be from the same joystick.
const u8 axis = static_cast<u8>(pad.axis);
if (axis == 0 || axis == 1) {
analog_x_axis = 0;
analog_y_axis = 1;
controller_number = static_cast<s32>(pad.port);
break;
}
if (axis == 2 || axis == 3) {
analog_x_axis = 2;
analog_y_axis = 3;
controller_number = static_cast<s32>(pad.port);
break;
}
if (analog_x_axis == -1) {
analog_x_axis = axis;
controller_number = static_cast<s32>(pad.port);
} else if (analog_y_axis == -1 && analog_x_axis != axis &&
controller_number == static_cast<s32>(pad.port)) {
analog_y_axis = axis;
break;
}
}
if (analog_x_axis != -1 && analog_y_axis != -1) {
params.Set("engine", "gcpad");
params.Set("port", controller_number);
params.Set("axis_x", analog_x_axis);
params.Set("axis_y", analog_y_axis);
analog_x_axis = -1;
analog_y_axis = -1;
controller_number = -1;
return params;
}
return params;
}
class GCVibration final : public Input::VibrationDevice {
public:
explicit GCVibration(u32 port_, GCAdapter::Adapter* adapter)
: port(port_), gcadapter(adapter) {}
u8 GetStatus() const override {
return gcadapter->RumblePlay(port, 0);
}
bool SetRumblePlay(f32 amp_low, f32 freq_low, f32 amp_high, f32 freq_high) const override {
const auto mean_amplitude = (amp_low + amp_high) * 0.5f;
const auto processed_amplitude = static_cast<u8>(
pow(mean_amplitude, 0.5f) * (3.0f - 2.0f * pow(mean_amplitude, 0.15f)) * 0x8);
return gcadapter->RumblePlay(port, processed_amplitude);
}
private:
const u32 port;
GCAdapter::Adapter* gcadapter;
};
/// An vibration device factory that creates vibration devices from GC Adapter
GCVibrationFactory::GCVibrationFactory(std::shared_ptr<GCAdapter::Adapter> adapter_)
: adapter(std::move(adapter_)) {}
/**
* Creates a vibration device from a joystick
* @param params contains parameters for creating the device:
* - "port": the nth gcpad on the adapter
*/
std::unique_ptr<Input::VibrationDevice> GCVibrationFactory::Create(
const Common::ParamPackage& params) {
const auto port = static_cast<u32>(params.Get("port", 0));
return std::make_unique<GCVibration>(port, adapter.get());
}
} // namespace InputCommon