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Joystick hotplug support (#4141) 

* use SDL_PollEvent instead of SDL_JoystickUpdate

Register hot plugged controller by GUID if they were configured in a previous session

* Move SDL_PollEvent into its own thread

* Don't store SDLJoystick pointer in Input Device; Get pointer on each GetStatus call

* Fix that joystick_list gets cleared after SDL_Quit

* Add VirtualJoystick for InputDevices thats never nullptr

* fixup! Add VirtualJoystick for InputDevices thats never nullptr

* fixup! fixup! Add VirtualJoystick for InputDevices thats never nullptr

* Remove SDL_GameController, make SDL_Joystick* unique_ptr

* fixup! Remove SDL_GameController, make SDL_Joystick* unique_ptr

* Adressed feedback; fixed handling of same guid reconnects

* fixup! Adressed feedback; fixed handling of same guid reconnects

* merge the two joystick_lists into one

* make SDLJoystick a member of VirtualJoystick

* fixup! make SDLJoystick a member of VirtualJoystick

* fixup! make SDLJoystick a member of VirtualJoystick

* fixup! fixup! make SDLJoystick a member of VirtualJoystick
This commit is contained in:
Ben 2018-09-08 19:01:30 +02:00 committed by GitHub
parent f86c993e11
commit 17978cf758
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 343 additions and 102 deletions
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6
src/citra/emu_window/emu_window_sdl2.cpp
View File

@ -17,6 +17,7 @@
#include "input_common/keyboard.h"
#include "input_common/main.h"
#include "input_common/motion_emu.h"
#include "input_common/sdl/sdl.h"
#include "network/network.h"
void EmuWindow_SDL2::OnMouseMotion(s32 x, s32 y) {
@ -86,7 +87,7 @@ EmuWindow_SDL2::EmuWindow_SDL2(bool fullscreen) {
SDL_SetMainReady();
// Initialize the window
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {
LOG_CRITICAL(Frontend, "Failed to initialize SDL2! Exiting...");
exit(1);
}
@ -142,6 +143,7 @@ EmuWindow_SDL2::EmuWindow_SDL2(bool fullscreen) {
}
EmuWindow_SDL2::~EmuWindow_SDL2() {
InputCommon::SDL::CloseSDLJoysticks();
SDL_GL_DeleteContext(gl_context);
SDL_Quit();
@ -187,6 +189,8 @@ void EmuWindow_SDL2::PollEvents() {
case SDL_QUIT:
is_open = false;
break;
default:
InputCommon::SDL::HandleGameControllerEvent(event);
}
}
}

1
src/citra_qt/bootmanager.cpp
View File

@ -108,6 +108,7 @@ GRenderWindow::GRenderWindow(QWidget* parent, EmuThread* emu_thread)
setWindowTitle(QString::fromStdString(window_title));
InputCommon::Init();
InputCommon::StartJoystickEventHandler();
}
GRenderWindow::~GRenderWindow() {

22
src/citra_qt/configuration/configure_input.cpp
View File

@ -1,4 +1,4 @@
// Copyright 2016 Citra Emulator Project
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
@ -53,19 +53,18 @@ static QString ButtonToText(const Common::ParamPackage& param) {
} else if (param.Get("engine", "") == "keyboard") {
return getKeyName(param.Get("code", 0));
} else if (param.Get("engine", "") == "sdl") {
QString text = QString(QObject::tr("Joystick %1")).arg(param.Get("joystick", "").c_str());
if (param.Has("hat")) {
text += QString(QObject::tr(" Hat %1 %2"))
.arg(param.Get("hat", "").c_str(), param.Get("direction", "").c_str());
return QString(QObject::tr("Hat %1 %2"))
.arg(param.Get("hat", "").c_str(), param.Get("direction", "").c_str());
}
if (param.Has("axis")) {
text += QString(QObject::tr(" Axis %1%2"))
.arg(param.Get("axis", "").c_str(), param.Get("direction", "").c_str());
return QString(QObject::tr("Axis %1%2"))
.arg(param.Get("axis", "").c_str(), param.Get("direction", "").c_str());
}
if (param.Has("button")) {
text += QString(QObject::tr(" Button %1")).arg(param.Get("button", "").c_str());
return QString(QObject::tr("Button %1")).arg(param.Get("button", "").c_str());
}
return text;
return QString();
} else {
return QObject::tr("[unknown]");
}
@ -81,13 +80,12 @@ static QString AnalogToText(const Common::ParamPackage& param, const std::string
return QString(QObject::tr("[unused]"));
}
QString text = QString(QObject::tr("Joystick %1")).arg(param.Get("joystick", "").c_str());
if (dir == "left" || dir == "right") {
text += QString(QObject::tr(" Axis %1")).arg(param.Get("axis_x", "").c_str());
return QString(QObject::tr("Axis %1")).arg(param.Get("axis_x", "").c_str());
} else if (dir == "up" || dir == "down") {
text += QString(QObject::tr(" Axis %1")).arg(param.Get("axis_y", "").c_str());
return QString(QObject::tr("Axis %1")).arg(param.Get("axis_y", "").c_str());
}
return text;
return QString();
} else {
return QObject::tr("[unknown]");
}

12
src/input_common/main.cpp
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@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include <memory>
#include <thread>
#include "common/param_package.h"
#include "input_common/analog_from_button.h"
#include "input_common/keyboard.h"
@ -19,6 +20,10 @@ static std::shared_ptr<Keyboard> keyboard;
static std::shared_ptr<MotionEmu> motion_emu;
static std::unique_ptr<CemuhookUDP::State> udp;
#ifdef HAVE_SDL2
static std::thread poll_thread;
#endif
void Init() {
keyboard = std::make_shared<Keyboard>();
Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
@ -34,6 +39,12 @@ void Init() {
udp = CemuhookUDP::Init();
}
void StartJoystickEventHandler() {
#ifdef HAVE_SDL2
poll_thread = std::thread(SDL::PollLoop);
#endif
}
void Shutdown() {
Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
keyboard.reset();
@ -43,6 +54,7 @@ void Shutdown() {
#ifdef HAVE_SDL2
SDL::Shutdown();
poll_thread.join();
#endif
}

2
src/input_common/main.h
View File

@ -20,6 +20,8 @@ void Init();
/// Deregisters all built-in input device factories and shuts them down.
void Shutdown();
void StartJoystickEventHandler();
class Keyboard;
/// Gets the keyboard button device factory.

393
src/input_common/sdl/sdl.cpp
View File

@ -2,15 +2,23 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <atomic>
#include <cmath>
#include <functional>
#include <iterator>
#include <mutex>
#include <string>
#include <thread>
#include <tuple>
#include <unordered_map>
#include <utility>
#include <vector>
#include <SDL.h>
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/math_util.h"
#include "common/param_package.h"
#include "common/threadsafe_queue.h"
#include "input_common/main.h"
#include "input_common/sdl/sdl.h"
@ -21,33 +29,53 @@ namespace SDL {
class SDLJoystick;
class SDLButtonFactory;
class SDLAnalogFactory;
static std::unordered_map<int, std::weak_ptr<SDLJoystick>> joystick_list;
/// Map of GUID of a list of corresponding vurtual Joysticks
static std::unordered_map<std::string, std::vector<std::shared_ptr<SDLJoystick>>> joystick_map;
static std::mutex joystick_map_mutex;
static std::shared_ptr<SDLButtonFactory> button_factory;
static std::shared_ptr<SDLAnalogFactory> analog_factory;
static bool initialized = false;
/// Used by the Pollers during config
static std::atomic<bool> polling;
static Common::SPSCQueue<SDL_Event> event_queue;
static std::atomic<bool> initialized = false;
static std::string GetGUID(SDL_Joystick* joystick) {
SDL_JoystickGUID guid = SDL_JoystickGetGUID(joystick);
char guid_str[33];
SDL_JoystickGetGUIDString(guid, guid_str, sizeof(guid_str));
return guid_str;
}
class SDLJoystick {
public:
explicit SDLJoystick(int joystick_index)
: joystick{SDL_JoystickOpen(joystick_index), SDL_JoystickClose} {
if (!joystick) {
LOG_ERROR(Input, "failed to open joystick {}", joystick_index);
}
SDLJoystick(const std::string& guid_, int port_, SDL_Joystick* joystick,
decltype(&SDL_JoystickClose) deleter = &SDL_JoystickClose)
: guid{guid_}, port{port_}, sdl_joystick{joystick, deleter} {}
~SDLJoystick() = default;
void SetButton(int button, bool value) {
std::lock_guard<std::mutex> lock(mutex);
state.buttons[button] = value;
}
bool GetButton(int button) const {
if (!joystick)
return {};
SDL_JoystickUpdate();
return SDL_JoystickGetButton(joystick.get(), button) == 1;
std::lock_guard<std::mutex> lock(mutex);
return state.buttons.at(button);
}
void SetAxis(int axis, Sint16 value) {
std::lock_guard<std::mutex> lock(mutex);
state.axes[axis] = value;
}
float GetAxis(int axis) const {
if (!joystick)
return {};
SDL_JoystickUpdate();
return SDL_JoystickGetAxis(joystick.get(), axis) / 32767.0f;
std::lock_guard<std::mutex> lock(mutex);
return state.axes.at(axis) / 32767.0f;
}
std::tuple<float, float> GetAnalog(int axis_x, int axis_y) const {
@ -67,18 +95,216 @@ public:
return std::make_tuple(x, y);
}
bool GetHatDirection(int hat, Uint8 direction) const {
return (SDL_JoystickGetHat(joystick.get(), hat) & direction) != 0;
void SetHat(int hat, Uint8 direction) {
std::lock_guard<std::mutex> lock(mutex);
state.hats[hat] = direction;
}
SDL_JoystickID GetJoystickID() const {
return SDL_JoystickInstanceID(joystick.get());
bool GetHatDirection(int hat, Uint8 direction) const {
std::lock_guard<std::mutex> lock(mutex);
return (state.hats.at(hat) & direction) != 0;
}
/**
* The guid of the joystick
*/
const std::string& GetGUID() const {
return guid;
}
/**
* The number of joystick from the same type that were connected before this joystick
*/
int GetPort() const {
return port;
}
SDL_Joystick* GetSDLJoystick() const {
return sdl_joystick.get();
}
void SetSDLJoystick(SDL_Joystick* joystick,
decltype(&SDL_JoystickClose) deleter = &SDL_JoystickClose) {
sdl_joystick =
std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)>(joystick, deleter);
}
private:
std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> joystick;
struct State {
std::unordered_map<int, bool> buttons;
std::unordered_map<int, Sint16> axes;
std::unordered_map<int, Uint8> hats;
} state;
const std::string guid;
const int port;
std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> sdl_joystick;
mutable std::mutex mutex;
};
/**
* Get the nth joystick with the corresponding GUID
*/
static std::shared_ptr<SDLJoystick> GetSDLJoystickByGUID(const std::string& guid, int port) {
std::lock_guard<std::mutex> lock(joystick_map_mutex);
const auto& it = joystick_map.find(guid);
if (it != joystick_map.end()) {
while (it->second.size() <= port) {
auto joystick = std::make_shared<SDLJoystick>(guid, it->second.size(), nullptr,
[](SDL_Joystick*) {});
it->second.emplace_back(joystick);
}
return it->second[port];
}
auto joystick = std::make_shared<SDLJoystick>(guid, 0, nullptr, [](SDL_Joystick*) {});
joystick_map[guid].emplace_back(joystick);
return joystick;
}
/**
* Check how many identical joysticks (by guid) were connected before the one with sdl_id and so tie
* it to a SDLJoystick with the same guid and that port
*/
static std::shared_ptr<SDLJoystick> GetSDLJoystickBySDLID(SDL_JoystickID sdl_id) {
std::lock_guard<std::mutex> lock(joystick_map_mutex);
auto sdl_joystick = SDL_JoystickFromInstanceID(sdl_id);
const std::string guid = GetGUID(sdl_joystick);
auto map_it = joystick_map.find(guid);
if (map_it != joystick_map.end()) {
auto vec_it = std::find_if(map_it->second.begin(), map_it->second.end(),
[&sdl_joystick](const std::shared_ptr<SDLJoystick>& joystick) {
return sdl_joystick == joystick->GetSDLJoystick();
});
if (vec_it != map_it->second.end()) {
// This is the common case: There is already an existing SDLJoystick maped to a
// SDLJoystick. return the SDLJoystick
return *vec_it;
}
// Search for a SDLJoystick without a mapped SDLJoystick...
auto nullptr_it = std::find_if(map_it->second.begin(), map_it->second.end(),
[](const std::shared_ptr<SDLJoystick>& joystick) {
return !joystick->GetSDLJoystick();
});
if (nullptr_it != map_it->second.end()) {
// ... and map it
(*nullptr_it)->SetSDLJoystick(sdl_joystick);
return *nullptr_it;
}
// There is no SDLJoystick without a mapped SDLJoystick
auto joystick = std::make_shared<SDLJoystick>(guid, map_it->second.size(), sdl_joystick);
map_it->second.emplace_back(joystick);
return joystick;
}
auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick);
joystick_map[guid].emplace_back(joystick);
return joystick;
}
void InitJoystick(int joystick_index) {
std::lock_guard<std::mutex> lock(joystick_map_mutex);
SDL_Joystick* sdl_joystick = SDL_JoystickOpen(joystick_index);
if (!sdl_joystick) {
LOG_ERROR(Input, "failed to open joystick {}", joystick_index);
return;
}
std::string guid = GetGUID(sdl_joystick);
if (joystick_map.find(guid) == joystick_map.end()) {
auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick);
joystick_map[guid].emplace_back(joystick);
return;
}
auto& joystick_guid_list = joystick_map[guid];
const auto& it = std::find_if(
joystick_guid_list.begin(), joystick_guid_list.end(),
[](const std::shared_ptr<SDLJoystick>& joystick) { return !joystick->GetSDLJoystick(); });
if (it != joystick_guid_list.end()) {
(*it)->SetSDLJoystick(sdl_joystick);
return;
}
auto joystick = std::make_shared<SDLJoystick>(guid, joystick_guid_list.size(), sdl_joystick);
joystick_guid_list.emplace_back(joystick);
}
void CloseJoystick(SDL_Joystick* sdl_joystick) {
std::lock_guard<std::mutex> lock(joystick_map_mutex);
std::string guid = GetGUID(sdl_joystick);
// This call to guid is save since the joystick is guranteed to be in that map
auto& joystick_guid_list = joystick_map[guid];
const auto& joystick_it =
std::find_if(joystick_guid_list.begin(), joystick_guid_list.end(),
[&sdl_joystick](const std::shared_ptr<SDLJoystick>& joystick) {
return joystick->GetSDLJoystick() == sdl_joystick;
});
(*joystick_it)->SetSDLJoystick(nullptr, [](SDL_Joystick*) {});
return;
}
void HandleGameControllerEvent(const SDL_Event& event) {
switch (event.type) {
case SDL_JOYBUTTONUP: {
auto joystick = GetSDLJoystickBySDLID(event.jbutton.which);
if (joystick) {
joystick->SetButton(event.jbutton.button, false);
}
break;
}
case SDL_JOYBUTTONDOWN: {
auto joystick = GetSDLJoystickBySDLID(event.jbutton.which);
if (joystick) {
joystick->SetButton(event.jbutton.button, true);
}
break;
}
case SDL_JOYHATMOTION: {
auto joystick = GetSDLJoystickBySDLID(event.jhat.which);
if (joystick) {
joystick->SetHat(event.jhat.hat, event.jhat.value);
}
break;
}
case SDL_JOYAXISMOTION: {
auto joystick = GetSDLJoystickBySDLID(event.jaxis.which);
if (joystick) {
joystick->SetAxis(event.jaxis.axis, event.jaxis.value);
}
break;
}
case SDL_JOYDEVICEREMOVED:
LOG_DEBUG(Input, "Controller removed with Instance_ID {}", event.jdevice.which);
CloseJoystick(SDL_JoystickFromInstanceID(event.jdevice.which));
break;
case SDL_JOYDEVICEADDED:
LOG_DEBUG(Input, "Controller connected with device index {}", event.jdevice.which);
InitJoystick(event.jdevice.which);
break;
}
}
void CloseSDLJoysticks() {
std::lock_guard<std::mutex> lock(joystick_map_mutex);
joystick_map.clear();
}
void PollLoop() {
if (SDL_Init(SDL_INIT_JOYSTICK) < 0) {
LOG_CRITICAL(Input, "SDL_Init(SDL_INIT_JOYSTICK) failed with: {}", SDL_GetError());
return;
}
SDL_Event event;
while (initialized) {
// Wait for 10 ms or until an event happens
if (SDL_WaitEventTimeout(&event, 10)) {
// Don't handle the event if we are configuring
if (!polling) {
HandleGameControllerEvent(event);
} else {
event_queue.Push(event);
}
}
}
CloseSDLJoysticks();
SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
}
class SDLButton final : public Input::ButtonDevice {
public:
explicit SDLButton(std::shared_ptr<SDLJoystick> joystick_, int button_)
@ -144,22 +370,14 @@ private:
int axis_y;
};
static std::shared_ptr<SDLJoystick> GetJoystick(int joystick_index) {
std::shared_ptr<SDLJoystick> joystick = joystick_list[joystick_index].lock();
if (!joystick) {
joystick = std::make_shared<SDLJoystick>(joystick_index);
joystick_list[joystick_index] = joystick;
}
return joystick;
}
/// A button device factory that creates button devices from SDL joystick
class SDLButtonFactory final : public Input::Factory<Input::ButtonDevice> {
public:
/**
* Creates a button device from a joystick button
* @param params contains parameters for creating the device:
* - "joystick": the index of the joystick to bind
* - "guid": the guid of the joystick to bind
* - "port": the nth joystick of the same type to bind
* - "button"(optional): the index of the button to bind
* - "hat"(optional): the index of the hat to bind as direction buttons
* - "axis"(optional): the index of the axis to bind
@ -167,12 +385,15 @@ public:
* "down", "left" or "right"
* - "threshold"(only used for axis): a float value in (-1.0, 1.0) which the button is
* triggered if the axis value crosses
* - "direction"(only used for axis): "+" means the button is triggered when the axis value
* is greater than the threshold; "-" means the button is triggered when the axis value
* is smaller than the threshold
* - "direction"(only used for axis): "+" means the button is triggered when the axis
* value is greater than the threshold; "-" means the button is triggered when the axis
* value is smaller than the threshold
*/
std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override {
const int joystick_index = params.Get("joystick", 0);
const std::string guid = params.Get("guid", "0");
const int port = params.Get("port", 0);
auto joystick = GetSDLJoystickByGUID(guid, port);
if (params.Has("hat")) {
const int hat = params.Get("hat", 0);
@ -189,8 +410,9 @@ public:
} else {
direction = 0;
}
return std::make_unique<SDLDirectionButton>(GetJoystick(joystick_index), hat,
direction);
// This is necessary so accessing GetHat with hat won't crash
joystick->SetHat(hat, SDL_HAT_CENTERED);
return std::make_unique<SDLDirectionButton>(joystick, hat, direction);
}
if (params.Has("axis")) {
@ -206,12 +428,15 @@ public:
trigger_if_greater = true;
LOG_ERROR(Input, "Unknown direction {}", direction_name);
}
return std::make_unique<SDLAxisButton>(GetJoystick(joystick_index), axis, threshold,
trigger_if_greater);
// This is necessary so accessing GetAxis with axis won't crash
joystick->SetAxis(axis, 0);
return std::make_unique<SDLAxisButton>(joystick, axis, threshold, trigger_if_greater);
}
const int button = params.Get("button", 0);
return std::make_unique<SDLButton>(GetJoystick(joystick_index), button);
// This is necessary so accessing GetButton with button won't crash
joystick->SetButton(button, false);
return std::make_unique<SDLButton>(joystick, button);
}
};
@ -221,27 +446,32 @@ public:
/**
* Creates analog device from joystick axes
* @param params contains parameters for creating the device:
* - "joystick": the index of the joystick to bind
* - "guid": the guid of the joystick to bind
* - "port": the nth joystick of the same type
* - "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> Create(const Common::ParamPackage& params) override {
const int joystick_index = params.Get("joystick", 0);
const std::string guid = params.Get("guid", "0");
const int port = params.Get("port", 0);
const int axis_x = params.Get("axis_x", 0);
const int axis_y = params.Get("axis_y", 1);
return std::make_unique<SDLAnalog>(GetJoystick(joystick_index), axis_x, axis_y);
auto joystick = GetSDLJoystickByGUID(guid, port);
// This is necessary so accessing GetAxis with axis_x and axis_y won't crash
joystick->SetAxis(axis_x, 0);
joystick->SetAxis(axis_y, 0);
return std::make_unique<SDLAnalog>(joystick, axis_x, axis_y);
}
};
void Init() {
if (SDL_Init(SDL_INIT_JOYSTICK) < 0) {
LOG_CRITICAL(Input, "SDL_Init(SDL_INIT_JOYSTICK) failed with: {}", SDL_GetError());
} else {
using namespace Input;
RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>());
RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>());
initialized = true;
}
using namespace Input;
RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>());
RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>());
polling = false;
initialized = true;
}
void Shutdown() {
@ -249,30 +479,17 @@ void Shutdown() {
using namespace Input;
UnregisterFactory<ButtonDevice>("sdl");
UnregisterFactory<AnalogDevice>("sdl");
SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
initialized = false;
}
}
/**
* This function converts a joystick ID used in SDL events to the device index. This is necessary
* because Citra opens joysticks using their indices, not their IDs.
*/
static int JoystickIDToDeviceIndex(SDL_JoystickID id) {
int num_joysticks = SDL_NumJoysticks();
for (int i = 0; i < num_joysticks; i++) {
auto joystick = GetJoystick(i);
if (joystick->GetJoystickID() == id) {
return i;
}
}
return -1;
}
Common::ParamPackage SDLEventToButtonParamPackage(const SDL_Event& event) {
Common::ParamPackage params({{"engine", "sdl"}});
switch (event.type) {
case SDL_JOYAXISMOTION:
params.Set("joystick", JoystickIDToDeviceIndex(event.jaxis.which));
case SDL_JOYAXISMOTION: {
auto joystick = GetSDLJoystickBySDLID(event.jaxis.which);
params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID());
params.Set("axis", event.jaxis.axis);
if (event.jaxis.value > 0) {
params.Set("direction", "+");
@ -282,12 +499,18 @@ Common::ParamPackage SDLEventToButtonParamPackage(const SDL_Event& event) {
params.Set("threshold", "-0.5");
}
break;
case SDL_JOYBUTTONUP:
params.Set("joystick", JoystickIDToDeviceIndex(event.jbutton.which));
}
case SDL_JOYBUTTONUP: {
auto joystick = GetSDLJoystickBySDLID(event.jbutton.which);
params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID());
params.Set("button", event.jbutton.button);
break;
case SDL_JOYHATMOTION:
params.Set("joystick", JoystickIDToDeviceIndex(event.jhat.which));
}
case SDL_JOYHATMOTION: {
auto joystick = GetSDLJoystickBySDLID(event.jhat.which);
params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID());
params.Set("hat", event.jhat.hat);
switch (event.jhat.value) {
case SDL_HAT_UP:
@ -307,6 +530,7 @@ Common::ParamPackage SDLEventToButtonParamPackage(const SDL_Event& event) {
}
break;
}
}
return params;
}
@ -315,31 +539,20 @@ namespace Polling {
class SDLPoller : public InputCommon::Polling::DevicePoller {
public:
void Start() override {
// SDL joysticks must be opened, otherwise they don't generate events
SDL_JoystickUpdate();
int num_joysticks = SDL_NumJoysticks();
for (int i = 0; i < num_joysticks; i++) {
joysticks_opened.emplace_back(GetJoystick(i));
}
// Empty event queue to get rid of old events. citra-qt doesn't use the queue
SDL_Event dummy;
while (SDL_PollEvent(&dummy)) {
}
event_queue.Clear();
polling = true;
}
void Stop() override {
joysticks_opened.clear();
polling = false;
}
private:
std::vector<std::shared_ptr<SDLJoystick>> joysticks_opened;
};
class SDLButtonPoller final : public SDLPoller {
public:
Common::ParamPackage GetNextInput() override {
SDL_Event event;
while (SDL_PollEvent(&event)) {
while (event_queue.Pop(event)) {
switch (event.type) {
case SDL_JOYAXISMOTION:
if (std::abs(event.jaxis.value / 32767.0) < 0.5) {
@ -367,7 +580,7 @@ public:
Common::ParamPackage GetNextInput() override {
SDL_Event event;
while (SDL_PollEvent(&event)) {
while (event_queue.Pop(event)) {
if (event.type != SDL_JOYAXISMOTION || std::abs(event.jaxis.value / 32767.0) < 0.5) {
continue;
}
@ -384,8 +597,10 @@ public:
}
Common::ParamPackage params;
if (analog_xaxis != -1 && analog_yaxis != -1) {
auto joystick = GetSDLJoystickBySDLID(event.jaxis.which);
params.Set("engine", "sdl");
params.Set("joystick", JoystickIDToDeviceIndex(analog_axes_joystick));
params.Set("port", joystick->GetPort());
params.Set("guid", joystick->GetGUID());
params.Set("axis_x", analog_xaxis);
params.Set("axis_y", analog_yaxis);
analog_xaxis = -1;

9
src/input_common/sdl/sdl.h
View File

@ -28,6 +28,15 @@ void Init();
/// Unresisters SDL device factories and shut them down.
void Shutdown();
/// Needs to be called before SDL_QuitSubSystem.
void CloseSDLJoysticks();
/// Handle SDL_Events for joysticks from SDL_PollEvent
void HandleGameControllerEvent(const SDL_Event& event);
/// A Loop that calls HandleGameControllerEvent until Shutdown is called
void PollLoop();
/// Creates a ParamPackage from an SDL_Event that can directly be used to create a ButtonDevice
Common::ParamPackage SDLEventToButtonParamPackage(const SDL_Event& event);