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EvdevControllerInterface: Implement axes

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This commit is contained in:
Connor McLaughlin 2021-05-25 13:20:15 +10:00
parent 350bae7e94
commit 0979149236
2 changed files with 59 additions and 19 deletions
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70
src/frontend-common/evdev_controller_interface.cpp
View file

@ -46,6 +46,7 @@ bool EvdevControllerInterface::Initialize(CommonHostInterface* host_interface)
}
ControllerData data(fd, obj);
data.controller_id = static_cast<int>(m_controllers.size());
if (InitializeController(index, &data))
m_controllers.push_back(std::move(data));
}
@ -65,7 +66,7 @@ EvdevControllerInterface::ControllerData::ControllerData(int fd_, struct libevde
EvdevControllerInterface::ControllerData::ControllerData(ControllerData&& move)
: obj(move.obj), fd(move.fd), controller_id(move.controller_id), num_motors(move.num_motors), deadzone(move.deadzone),
axises(std::move(move.axises)), buttons(std::move(move.buttons))
axes(std::move(move.axes)), buttons(std::move(move.buttons))
{
move.obj = nullptr;
move.fd = -1;
@ -93,7 +94,7 @@ EvdevControllerInterface::ControllerData::operator=(EvdevControllerInterface::Co
controller_id = move.controller_id;
num_motors = move.num_motors;
deadzone = move.deadzone;
axises = std::move(move.axises);
axes = std::move(move.axes);
buttons = std::move(move.buttons);
return *this;
}
@ -129,14 +130,34 @@ bool EvdevControllerInterface::InitializeController(int index, ControllerData* c
cd->buttons.push_back(std::move(button));
}
// Heuristic borrowed from Dolphin's evdev controller interface - ignore bogus devices
// which do have less than 2 axises and less than 8 buttons.
if (cd->axises.size() < 2 && cd->buttons.size() < 8)
for (u32 axis = 0; axis <= ABS_TOOL_WIDTH; axis++)
{
Log_InfoPrintf("Ignoring device %s due to heuristic", name);
if (!libevdev_has_event_code(cd->obj, EV_ABS, axis))
continue;
const s32 min = libevdev_get_abs_minimum(cd->obj, axis);
const s32 max = libevdev_get_abs_maximum(cd->obj, axis);
const char* axis_name = libevdev_event_code_get_name(EV_ABS, axis);
Log_DevPrintf("Axis %u: %s -> Axis %zu [%d-%d]", axis, axis_name ? axis_name : "null", cd->axes.size(), min, max);
ControllerData::Axis ad;
ad.id = axis;
ad.min = min;
ad.range = max - min;
cd->axes.push_back(std::move(ad));
}
// Heuristic borrowed from Dolphin's evdev controller interface - ignore bogus devices
// which do have less than 2 axes and less than 8 buttons.
if (cd->axes.size() < 2 && cd->buttons.size() < 8)
{
Log_VerbosePrintf("Ignoring device %s with %zu axes and %zu buttons due to heuristic", name, cd->axes.size(),
cd->buttons.size());
return false;
}
Log_InfoPrintf("Controller %d -> %s with %zu axes and %zu buttons", cd->controller_id, name, cd->axes.size(),
cd->buttons.size());
return true;
}
@ -167,6 +188,22 @@ void EvdevControllerInterface::HandleControllerEvents(ControllerData* cd)
}
break;
case EV_ABS:
{
// axis
Log_DebugPrintf("Axis %u %d", ev.code, ev.value);
for (u32 i = 0; i < static_cast<u32>(cd->axes.size()); i++)
{
if (cd->axes[i].id == ev.code)
{
HandleAxisEvent(cd, i, ev.value);
break;
}
}
}
break;
default:
break;
}
@ -205,7 +242,7 @@ void EvdevControllerInterface::ClearBindings()
btn.callback = {};
btn.axis_callback = {};
}
for (ControllerData::Axis& axis : cd.axises)
for (ControllerData::Axis& axis : cd.axes)
{
axis.callback = {};
axis.button_callback = {};
@ -217,10 +254,10 @@ bool EvdevControllerInterface::BindControllerAxis(int controller_index, int axis
AxisCallback callback)
{
ControllerData* cd = GetControllerById(controller_index);
if (!cd || static_cast<u32>(axis_number) >= cd->axises.size())
if (!cd || static_cast<u32>(axis_number) >= cd->axes.size())
return false;
cd->axises[axis_number].callback[axis_side] = std::move(callback);
cd->axes[axis_number].callback[axis_side] = std::move(callback);
return true;
}
@ -238,10 +275,10 @@ bool EvdevControllerInterface::BindControllerAxisToButton(int controller_index,
ButtonCallback callback)
{
ControllerData* cd = GetControllerById(controller_index);
if (!cd || static_cast<u32>(axis_number) >= cd->axises.size())
if (!cd || static_cast<u32>(axis_number) >= cd->axes.size())
return false;
cd->axises[axis_number].button_callback[BoolToUInt8(direction)] = std::move(callback);
cd->axes[axis_number].button_callback[BoolToUInt8(direction)] = std::move(callback);
return true;
}
@ -265,13 +302,14 @@ bool EvdevControllerInterface::BindControllerButtonToAxis(int controller_index,
bool EvdevControllerInterface::HandleAxisEvent(ControllerData* cd, u32 axis, s32 value)
{
const float f_value = static_cast<float>(value) / (value < 0 ? 32768.0f : 32767.0f);
Log_DevPrintf("controller %u axis %u %d %f", cd->controller_id, axis, value, f_value);
const ControllerData::Axis& ad = cd->axes[axis];
const float f_value = ((static_cast<float>(value - ad.min) / ad.range) * 2.0f) - 1.0f;
Log_DevPrintf("controller %u axis %u %d %f range %d", cd->controller_id, axis, value, f_value, ad.range);
if (DoEventHook(Hook::Type::Axis, cd->controller_id, axis, f_value))
return true;
const AxisCallback& cb = cd->axises[axis].callback[AxisSide::Full];
const AxisCallback& cb = ad.callback[AxisSide::Full];
if (cb)
{
cb(f_value);
@ -281,8 +319,8 @@ bool EvdevControllerInterface::HandleAxisEvent(ControllerData* cd, u32 axis, s32
// set the other direction to false so large movements don't leave the opposite on
const bool outside_deadzone = (std::abs(f_value) >= cd->deadzone);
const bool positive = (f_value >= 0.0f);
const ButtonCallback& other_button_cb = cd->axises[axis].button_callback[BoolToUInt8(!positive)];
const ButtonCallback& button_cb = cd->axises[axis].button_callback[BoolToUInt8(positive)];
const ButtonCallback& other_button_cb = ad.button_callback[BoolToUInt8(!positive)];
const ButtonCallback& button_cb = ad.button_callback[BoolToUInt8(positive)];
if (button_cb)
{
button_cb(outside_deadzone);

8
src/frontend-common/evdev_controller_interface.h
View file

@ -1,9 +1,9 @@
#pragma once
#include "controller_interface.h"
#include "core/types.h"
#include <libevdev/libevdev.h>
#include <array>
#include <functional>
#include <libevdev/libevdev.h>
#include <mutex>
#include <vector>
@ -69,6 +69,8 @@ private:
struct Axis
{
u32 id;
s32 min;
s32 range;
std::array<AxisCallback, 3> callback;
std::array<ButtonCallback, 2> button_callback;
};
@ -79,8 +81,8 @@ private:
ButtonCallback callback;
AxisCallback axis_callback;
};
std::vector<Axis> axises;
std::vector<Axis> axes;
std::vector<Button> buttons;
};