diff options
Diffstat (limited to '')
-rw-r--r-- | src/input_common/CMakeLists.txt | 15 | ||||
-rw-r--r-- | src/input_common/main.cpp | 23 | ||||
-rw-r--r-- | src/input_common/main.h | 2 | ||||
-rw-r--r-- | src/input_common/sdl/sdl.cpp | 636 | ||||
-rw-r--r-- | src/input_common/sdl/sdl.h | 53 | ||||
-rw-r--r-- | src/input_common/sdl/sdl_impl.cpp | 669 | ||||
-rw-r--r-- | src/input_common/sdl/sdl_impl.h | 63 |
7 files changed, 780 insertions, 681 deletions
diff --git a/src/input_common/CMakeLists.txt b/src/input_common/CMakeLists.txt index 1c7db28c0..5b4e032bd 100644 --- a/src/input_common/CMakeLists.txt +++ b/src/input_common/CMakeLists.txt @@ -7,15 +7,18 @@ add_library(input_common STATIC main.h motion_emu.cpp motion_emu.h - - $<$<BOOL:${SDL2_FOUND}>:sdl/sdl.cpp sdl/sdl.h> + sdl/sdl.cpp + sdl/sdl.h ) -create_target_directory_groups(input_common) - -target_link_libraries(input_common PUBLIC core PRIVATE common) - if(SDL2_FOUND) + target_sources(input_common PRIVATE + sdl/sdl_impl.cpp + sdl/sdl_impl.h + ) target_link_libraries(input_common PRIVATE SDL2) target_compile_definitions(input_common PRIVATE HAVE_SDL2) endif() + +create_target_directory_groups(input_common) +target_link_libraries(input_common PUBLIC core PRIVATE common) diff --git a/src/input_common/main.cpp b/src/input_common/main.cpp index 37f572853..8e66c1b15 100644 --- a/src/input_common/main.cpp +++ b/src/input_common/main.cpp @@ -17,10 +17,7 @@ namespace InputCommon { static std::shared_ptr<Keyboard> keyboard; static std::shared_ptr<MotionEmu> motion_emu; - -#ifdef HAVE_SDL2 -static std::thread poll_thread; -#endif +static std::unique_ptr<SDL::State> sdl; void Init() { keyboard = std::make_shared<Keyboard>(); @@ -30,15 +27,7 @@ void Init() { motion_emu = std::make_shared<MotionEmu>(); Input::RegisterFactory<Input::MotionDevice>("motion_emu", motion_emu); -#ifdef HAVE_SDL2 - SDL::Init(); -#endif -} - -void StartJoystickEventHandler() { -#ifdef HAVE_SDL2 - poll_thread = std::thread(SDL::PollLoop); -#endif + sdl = SDL::Init(); } void Shutdown() { @@ -47,11 +36,7 @@ void Shutdown() { Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button"); Input::UnregisterFactory<Input::MotionDevice>("motion_emu"); motion_emu.reset(); - -#ifdef HAVE_SDL2 - SDL::Shutdown(); - poll_thread.join(); -#endif + sdl.reset(); } Keyboard* GetKeyboard() { @@ -88,7 +73,7 @@ namespace Polling { std::vector<std::unique_ptr<DevicePoller>> GetPollers(DeviceType type) { #ifdef HAVE_SDL2 - return SDL::Polling::GetPollers(type); + return sdl->GetPollers(type); #else return {}; #endif diff --git a/src/input_common/main.h b/src/input_common/main.h index 9eb13106e..77a0ce90b 100644 --- a/src/input_common/main.h +++ b/src/input_common/main.h @@ -20,8 +20,6 @@ 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. diff --git a/src/input_common/sdl/sdl.cpp b/src/input_common/sdl/sdl.cpp index faf3c1fa3..644db3448 100644 --- a/src/input_common/sdl/sdl.cpp +++ b/src/input_common/sdl/sdl.cpp @@ -1,631 +1,19 @@ -// Copyright 2017 Citra Emulator Project +// Copyright 2018 Citra Emulator Project // Licensed under GPLv2 or any later version // Refer to the license.txt file included. -#include <algorithm> -#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" +#ifdef HAVE_SDL2 +#include "input_common/sdl/sdl_impl.h" +#endif -namespace InputCommon { +namespace InputCommon::SDL { -namespace SDL { - -class SDLJoystick; -class SDLButtonFactory; -class SDLAnalogFactory; - -/// Map of GUID of a list of corresponding virtual 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; - -/// 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: - SDLJoystick(std::string guid_, int port_, SDL_Joystick* joystick, - decltype(&SDL_JoystickClose) deleter = &SDL_JoystickClose) - : guid{std::move(guid_)}, port{port_}, sdl_joystick{joystick, deleter} {} - - void SetButton(int button, bool value) { - std::lock_guard<std::mutex> lock(mutex); - state.buttons[button] = value; - } - - bool GetButton(int button) const { - 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 { - 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 { - float x = GetAxis(axis_x); - float y = GetAxis(axis_y); - y = -y; // 3DS uses an y-axis inverse from SDL - - // 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 std::make_tuple(x, y); - } - - void SetHat(int hat, Uint8 direction) { - std::lock_guard<std::mutex> lock(mutex); - state.hats[hat] = direction; - } - - 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: - struct State { - std::unordered_map<int, bool> buttons; - std::unordered_map<int, Sint16> axes; - std::unordered_map<int, Uint8> hats; - } state; - std::string guid; - 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(std::move(joystick)); - } - return it->second[port]; - } - auto joystick = std::make_shared<SDLJoystick>(guid, 0, nullptr, [](SDL_Joystick*) {}); - return joystick_map[guid].emplace_back(std::move(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 SDL_Joystick maped to a - // SDLJoystick. return the SDLJoystick - return *vec_it; - } - // Search for a SDLJoystick without a mapped SDL_Joystick... - 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 SDL_Joystick - // Create a new SDLJoystick - auto joystick = std::make_shared<SDLJoystick>(guid, map_it->second.size(), sdl_joystick); - return map_it->second.emplace_back(std::move(joystick)); - } - auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick); - return joystick_map[guid].emplace_back(std::move(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(std::move(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(std::move(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*) {}); -} - -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) { - event_queue.Push(event); - } else { - HandleGameControllerEvent(event); - } - } - } - CloseSDLJoysticks(); - SDL_QuitSubSystem(SDL_INIT_JOYSTICK); -} - -class SDLButton final : public Input::ButtonDevice { -public: - explicit SDLButton(std::shared_ptr<SDLJoystick> joystick_, int button_) - : joystick(std::move(joystick_)), button(button_) {} - - bool GetStatus() const override { - return joystick->GetButton(button); - } - -private: - std::shared_ptr<SDLJoystick> joystick; - int button; -}; - -class SDLDirectionButton final : public Input::ButtonDevice { -public: - explicit SDLDirectionButton(std::shared_ptr<SDLJoystick> joystick_, int hat_, Uint8 direction_) - : joystick(std::move(joystick_)), hat(hat_), direction(direction_) {} - - bool GetStatus() const override { - return joystick->GetHatDirection(hat, direction); - } - -private: - std::shared_ptr<SDLJoystick> joystick; - int hat; - Uint8 direction; -}; - -class SDLAxisButton final : public Input::ButtonDevice { -public: - explicit SDLAxisButton(std::shared_ptr<SDLJoystick> joystick_, int axis_, float threshold_, - bool trigger_if_greater_) - : joystick(std::move(joystick_)), axis(axis_), threshold(threshold_), - trigger_if_greater(trigger_if_greater_) {} - - bool GetStatus() const override { - float axis_value = joystick->GetAxis(axis); - if (trigger_if_greater) - return axis_value > threshold; - return axis_value < threshold; - } - -private: - std::shared_ptr<SDLJoystick> joystick; - int axis; - float threshold; - bool trigger_if_greater; -}; - -class SDLAnalog final : public Input::AnalogDevice { -public: - SDLAnalog(std::shared_ptr<SDLJoystick> joystick_, int axis_x_, int axis_y_) - : joystick(std::move(joystick_)), axis_x(axis_x_), axis_y(axis_y_) {} - - std::tuple<float, float> GetStatus() const override { - return joystick->GetAnalog(axis_x, axis_y); - } - -private: - std::shared_ptr<SDLJoystick> joystick; - int axis_x; - int axis_y; -}; - -/// 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: - * - "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 - * - "direction"(only used for hat): the direction name of the hat to bind. Can be "up", - * "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 - */ - std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override { - 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); - const std::string direction_name = params.Get("direction", ""); - Uint8 direction; - if (direction_name == "up") { - direction = SDL_HAT_UP; - } else if (direction_name == "down") { - direction = SDL_HAT_DOWN; - } else if (direction_name == "left") { - direction = SDL_HAT_LEFT; - } else if (direction_name == "right") { - direction = SDL_HAT_RIGHT; - } else { - direction = 0; - } - // 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")) { - const int axis = params.Get("axis", 0); - const float threshold = params.Get("threshold", 0.5f); - 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); - } - // 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); - // This is necessary so accessing GetButton with button won't crash - joystick->SetButton(button, false); - return std::make_unique<SDLButton>(joystick, button); - } -}; - -/// An analog device factory that creates analog devices from SDL joystick -class SDLAnalogFactory final : public Input::Factory<Input::AnalogDevice> { -public: - /** - * Creates analog device from joystick axes - * @param params contains parameters for creating the device: - * - "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 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); - - 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() { - using namespace Input; - RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>()); - RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>()); - polling = false; - initialized = true; -} - -void Shutdown() { - if (initialized) { - using namespace Input; - UnregisterFactory<ButtonDevice>("sdl"); - UnregisterFactory<AnalogDevice>("sdl"); - initialized = false; - } -} - -Common::ParamPackage SDLEventToButtonParamPackage(const SDL_Event& event) { - Common::ParamPackage params({{"engine", "sdl"}}); - switch (event.type) { - 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", "+"); - params.Set("threshold", "0.5"); - } else { - params.Set("direction", "-"); - params.Set("threshold", "-0.5"); - } - break; - } - 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: { - 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: - params.Set("direction", "up"); - break; - case SDL_HAT_DOWN: - params.Set("direction", "down"); - break; - case SDL_HAT_LEFT: - params.Set("direction", "left"); - break; - case SDL_HAT_RIGHT: - params.Set("direction", "right"); - break; - default: - return {}; - } - break; - } - } - return params; -} - -namespace Polling { - -class SDLPoller : public InputCommon::Polling::DevicePoller { -public: - void Start() override { - event_queue.Clear(); - polling = true; - } - - void Stop() override { - polling = false; - } -}; - -class SDLButtonPoller final : public SDLPoller { -public: - Common::ParamPackage GetNextInput() override { - SDL_Event event; - while (event_queue.Pop(event)) { - switch (event.type) { - case SDL_JOYAXISMOTION: - if (std::abs(event.jaxis.value / 32767.0) < 0.5) { - break; - } - case SDL_JOYBUTTONUP: - case SDL_JOYHATMOTION: - return SDLEventToButtonParamPackage(event); - } - } - return {}; - } -}; - -class SDLAnalogPoller final : public SDLPoller { -public: - void Start() override { - SDLPoller::Start(); - - // Reset stored axes - analog_xaxis = -1; - analog_yaxis = -1; - analog_axes_joystick = -1; - } - - Common::ParamPackage GetNextInput() override { - SDL_Event event; - while (event_queue.Pop(event)) { - if (event.type != SDL_JOYAXISMOTION || std::abs(event.jaxis.value / 32767.0) < 0.5) { - continue; - } - // An analog device needs two axes, so we need to store the axis for later and wait for - // a second SDL event. The axes also must be from the same joystick. - int axis = event.jaxis.axis; - if (analog_xaxis == -1) { - analog_xaxis = axis; - analog_axes_joystick = event.jaxis.which; - } else if (analog_yaxis == -1 && analog_xaxis != axis && - analog_axes_joystick == event.jaxis.which) { - analog_yaxis = axis; - } - } - Common::ParamPackage params; - if (analog_xaxis != -1 && analog_yaxis != -1) { - auto joystick = GetSDLJoystickBySDLID(event.jaxis.which); - params.Set("engine", "sdl"); - 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; - analog_yaxis = -1; - analog_axes_joystick = -1; - return params; - } - return params; - } - -private: - int analog_xaxis = -1; - int analog_yaxis = -1; - SDL_JoystickID analog_axes_joystick = -1; -}; - -std::vector<std::unique_ptr<InputCommon::Polling::DevicePoller>> GetPollers( - InputCommon::Polling::DeviceType type) { - std::vector<std::unique_ptr<InputCommon::Polling::DevicePoller>> pollers; - switch (type) { - case InputCommon::Polling::DeviceType::Analog: - pollers.push_back(std::make_unique<SDLAnalogPoller>()); - break; - case InputCommon::Polling::DeviceType::Button: - pollers.push_back(std::make_unique<SDLButtonPoller>()); - break; - } - return pollers; +std::unique_ptr<State> Init() { +#ifdef HAVE_SDL2 + return std::make_unique<SDLState>(); +#else + return std::make_unique<NullState>(); +#endif } -} // namespace Polling -} // namespace SDL -} // namespace InputCommon +} // namespace InputCommon::SDL diff --git a/src/input_common/sdl/sdl.h b/src/input_common/sdl/sdl.h index 0206860d3..d7f24c68a 100644 --- a/src/input_common/sdl/sdl.h +++ b/src/input_common/sdl/sdl.h @@ -1,4 +1,4 @@ -// Copyright 2017 Citra Emulator Project +// Copyright 2018 Citra Emulator Project // Licensed under GPLv2 or any later version // Refer to the license.txt file included. @@ -7,45 +7,38 @@ #include <memory> #include <vector> #include "core/frontend/input.h" +#include "input_common/main.h" union SDL_Event; + namespace Common { class ParamPackage; -} -namespace InputCommon { -namespace Polling { +} // namespace Common + +namespace InputCommon::Polling { class DevicePoller; enum class DeviceType; -} // namespace Polling -} // namespace InputCommon - -namespace InputCommon { -namespace SDL { - -/// Initializes and registers SDL device factories -void Init(); - -/// Unresisters SDL device factories and shut them down. -void Shutdown(); +} // namespace InputCommon::Polling -/// Needs to be called before SDL_QuitSubSystem. -void CloseSDLJoysticks(); +namespace InputCommon::SDL { -/// Handle SDL_Events for joysticks from SDL_PollEvent -void HandleGameControllerEvent(const SDL_Event& event); +class State { +public: + using Pollers = std::vector<std::unique_ptr<Polling::DevicePoller>>; -/// A Loop that calls HandleGameControllerEvent until Shutdown is called -void PollLoop(); + /// Unregisters SDL device factories and shut them down. + virtual ~State() = default; -/// Creates a ParamPackage from an SDL_Event that can directly be used to create a ButtonDevice -Common::ParamPackage SDLEventToButtonParamPackage(const SDL_Event& event); + virtual Pollers GetPollers(Polling::DeviceType type) = 0; +}; -namespace Polling { +class NullState : public State { +public: + Pollers GetPollers(Polling::DeviceType type) override { + return {}; + } +}; -/// Get all DevicePoller that use the SDL backend for a specific device type -std::vector<std::unique_ptr<InputCommon::Polling::DevicePoller>> GetPollers( - InputCommon::Polling::DeviceType type); +std::unique_ptr<State> Init(); -} // namespace Polling -} // namespace SDL -} // namespace InputCommon +} // namespace InputCommon::SDL diff --git a/src/input_common/sdl/sdl_impl.cpp b/src/input_common/sdl/sdl_impl.cpp new file mode 100644 index 000000000..b132d77f5 --- /dev/null +++ b/src/input_common/sdl/sdl_impl.cpp @@ -0,0 +1,669 @@ +// Copyright 2018 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <algorithm> +#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 "core/frontend/input.h" +#include "input_common/sdl/sdl_impl.h" + +namespace InputCommon { + +namespace SDL { + +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; +} + +/// Creates a ParamPackage from an SDL_Event that can directly be used to create a ButtonDevice +static Common::ParamPackage SDLEventToButtonParamPackage(SDLState& state, const SDL_Event& event); + +static int SDLEventWatcher(void* userdata, SDL_Event* event) { + SDLState* sdl_state = reinterpret_cast<SDLState*>(userdata); + // Don't handle the event if we are configuring + if (sdl_state->polling) { + sdl_state->event_queue.Push(*event); + } else { + sdl_state->HandleGameControllerEvent(*event); + } + return 0; +} + +class SDLJoystick { +public: + SDLJoystick(std::string guid_, int port_, SDL_Joystick* joystick, + decltype(&SDL_JoystickClose) deleter = &SDL_JoystickClose) + : guid{std::move(guid_)}, port{port_}, sdl_joystick{joystick, deleter} {} + + void SetButton(int button, bool value) { + std::lock_guard<std::mutex> lock(mutex); + state.buttons[button] = value; + } + + bool GetButton(int button) const { + 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 { + 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 { + float x = GetAxis(axis_x); + float y = GetAxis(axis_y); + y = -y; // 3DS uses an y-axis inverse from SDL + + // 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 std::make_tuple(x, y); + } + + void SetHat(int hat, Uint8 direction) { + std::lock_guard<std::mutex> lock(mutex); + state.hats[hat] = direction; + } + + 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: + struct State { + std::unordered_map<int, bool> buttons; + std::unordered_map<int, Sint16> axes; + std::unordered_map<int, Uint8> hats; + } state; + std::string guid; + int port; + std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> sdl_joystick; + mutable std::mutex mutex; +}; + +/** + * Get the nth joystick with the corresponding GUID + */ +std::shared_ptr<SDLJoystick> SDLState::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(std::move(joystick)); + } + return it->second[port]; + } + auto joystick = std::make_shared<SDLJoystick>(guid, 0, nullptr, [](SDL_Joystick*) {}); + return joystick_map[guid].emplace_back(std::move(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 + */ +std::shared_ptr<SDLJoystick> SDLState::GetSDLJoystickBySDLID(SDL_JoystickID sdl_id) { + auto sdl_joystick = SDL_JoystickFromInstanceID(sdl_id); + const std::string guid = GetGUID(sdl_joystick); + std::lock_guard<std::mutex> lock(joystick_map_mutex); + 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 SDL_Joystick maped to a + // SDLJoystick. return the SDLJoystick + return *vec_it; + } + // Search for a SDLJoystick without a mapped SDL_Joystick... + 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 SDL_Joystick + // Create a new SDLJoystick + auto joystick = std::make_shared<SDLJoystick>(guid, map_it->second.size(), sdl_joystick); + return map_it->second.emplace_back(std::move(joystick)); + } + auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick); + return joystick_map[guid].emplace_back(std::move(joystick)); +} + +void SDLState::InitJoystick(int joystick_index) { + 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); + std::lock_guard<std::mutex> lock(joystick_map_mutex); + if (joystick_map.find(guid) == joystick_map.end()) { + auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick); + joystick_map[guid].emplace_back(std::move(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(std::move(joystick)); +} + +void SDLState::CloseJoystick(SDL_Joystick* sdl_joystick) { + std::string guid = GetGUID(sdl_joystick); + std::shared_ptr<SDLJoystick> joystick; + { + std::lock_guard<std::mutex> lock(joystick_map_mutex); + // This call to guid is safe since the joystick is guaranteed to be in the 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 = *joystick_it; + } + // Destruct SDL_Joystick outside the lock guard because SDL can internally call event calback + // which locks the mutex again + joystick->SetSDLJoystick(nullptr, [](SDL_Joystick*) {}); +} + +void SDLState::HandleGameControllerEvent(const SDL_Event& event) { + switch (event.type) { + case SDL_JOYBUTTONUP: { + if (auto joystick = GetSDLJoystickBySDLID(event.jbutton.which)) { + joystick->SetButton(event.jbutton.button, false); + } + break; + } + case SDL_JOYBUTTONDOWN: { + if (auto joystick = GetSDLJoystickBySDLID(event.jbutton.which)) { + joystick->SetButton(event.jbutton.button, true); + } + break; + } + case SDL_JOYHATMOTION: { + if (auto joystick = GetSDLJoystickBySDLID(event.jhat.which)) { + joystick->SetHat(event.jhat.hat, event.jhat.value); + } + break; + } + case SDL_JOYAXISMOTION: { + if (auto joystick = GetSDLJoystickBySDLID(event.jaxis.which)) { + 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 SDLState::CloseJoysticks() { + std::lock_guard<std::mutex> lock(joystick_map_mutex); + joystick_map.clear(); +} + +class SDLButton final : public Input::ButtonDevice { +public: + explicit SDLButton(std::shared_ptr<SDLJoystick> joystick_, int button_) + : joystick(std::move(joystick_)), button(button_) {} + + bool GetStatus() const override { + return joystick->GetButton(button); + } + +private: + std::shared_ptr<SDLJoystick> joystick; + int button; +}; + +class SDLDirectionButton final : public Input::ButtonDevice { +public: + explicit SDLDirectionButton(std::shared_ptr<SDLJoystick> joystick_, int hat_, Uint8 direction_) + : joystick(std::move(joystick_)), hat(hat_), direction(direction_) {} + + bool GetStatus() const override { + return joystick->GetHatDirection(hat, direction); + } + +private: + std::shared_ptr<SDLJoystick> joystick; + int hat; + Uint8 direction; +}; + +class SDLAxisButton final : public Input::ButtonDevice { +public: + explicit SDLAxisButton(std::shared_ptr<SDLJoystick> joystick_, int axis_, float threshold_, + bool trigger_if_greater_) + : joystick(std::move(joystick_)), axis(axis_), threshold(threshold_), + trigger_if_greater(trigger_if_greater_) {} + + bool GetStatus() const override { + float axis_value = joystick->GetAxis(axis); + if (trigger_if_greater) + return axis_value > threshold; + return axis_value < threshold; + } + +private: + std::shared_ptr<SDLJoystick> joystick; + int axis; + float threshold; + bool trigger_if_greater; +}; + +class SDLAnalog final : public Input::AnalogDevice { +public: + SDLAnalog(std::shared_ptr<SDLJoystick> joystick_, int axis_x_, int axis_y_, float deadzone_) + : joystick(std::move(joystick_)), axis_x(axis_x_), axis_y(axis_y_), deadzone(deadzone_) {} + + std::tuple<float, float> GetStatus() const override { + const auto [x, y] = joystick->GetAnalog(axis_x, axis_y); + const float r = std::sqrt((x * x) + (y * y)); + if (r > deadzone) { + return std::make_tuple(x / r * (r - deadzone) / (1 - deadzone), + y / r * (r - deadzone) / (1 - deadzone)); + } + return std::make_tuple<float, float>(0.0f, 0.0f); + } + +private: + std::shared_ptr<SDLJoystick> joystick; + const int axis_x; + const int axis_y; + const float deadzone; +}; + +/// A button device factory that creates button devices from SDL joystick +class SDLButtonFactory final : public Input::Factory<Input::ButtonDevice> { +public: + explicit SDLButtonFactory(SDLState& state_) : state(state_) {} + + /** + * Creates a button device from a joystick button + * @param params contains parameters for creating the device: + * - "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 + * - "direction"(only used for hat): the direction name of the hat to bind. Can be "up", + * "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 + */ + std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override { + const std::string guid = params.Get("guid", "0"); + const int port = params.Get("port", 0); + + auto joystick = state.GetSDLJoystickByGUID(guid, port); + + if (params.Has("hat")) { + const int hat = params.Get("hat", 0); + const std::string direction_name = params.Get("direction", ""); + Uint8 direction; + if (direction_name == "up") { + direction = SDL_HAT_UP; + } else if (direction_name == "down") { + direction = SDL_HAT_DOWN; + } else if (direction_name == "left") { + direction = SDL_HAT_LEFT; + } else if (direction_name == "right") { + direction = SDL_HAT_RIGHT; + } else { + direction = 0; + } + // 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")) { + const int axis = params.Get("axis", 0); + const float threshold = params.Get("threshold", 0.5f); + 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); + } + // 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); + // This is necessary so accessing GetButton with button won't crash + joystick->SetButton(button, false); + return std::make_unique<SDLButton>(joystick, button); + } + +private: + SDLState& state; +}; + +/// An analog device factory that creates analog devices from SDL joystick +class SDLAnalogFactory final : public Input::Factory<Input::AnalogDevice> { +public: + explicit SDLAnalogFactory(SDLState& state_) : state(state_) {} + /** + * Creates analog device from joystick axes + * @param params contains parameters for creating the device: + * - "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 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); + float deadzone = std::clamp(params.Get("deadzone", 0.0f), 0.0f, .99f); + + auto joystick = state.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, deadzone); + } + +private: + SDLState& state; +}; + +SDLState::SDLState() { + using namespace Input; + RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>(*this)); + RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>(*this)); + + // If the frontend is going to manage the event loop, then we dont start one here + start_thread = !SDL_WasInit(SDL_INIT_JOYSTICK); + if (start_thread && SDL_Init(SDL_INIT_JOYSTICK) < 0) { + LOG_CRITICAL(Input, "SDL_Init(SDL_INIT_JOYSTICK) failed with: {}", SDL_GetError()); + return; + } + if (SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1") == SDL_FALSE) { + LOG_ERROR(Input, "Failed to set Hint for background events", SDL_GetError()); + } + + SDL_AddEventWatch(&SDLEventWatcher, this); + + initialized = true; + if (start_thread) { + poll_thread = std::thread([this] { + using namespace std::chrono_literals; + while (initialized) { + SDL_PumpEvents(); + std::this_thread::sleep_for(10ms); + } + }); + } + // Because the events for joystick connection happens before we have our event watcher added, we + // can just open all the joysticks right here + for (int i = 0; i < SDL_NumJoysticks(); ++i) { + InitJoystick(i); + } +} + +SDLState::~SDLState() { + using namespace Input; + UnregisterFactory<ButtonDevice>("sdl"); + UnregisterFactory<AnalogDevice>("sdl"); + + CloseJoysticks(); + SDL_DelEventWatch(&SDLEventWatcher, this); + + initialized = false; + if (start_thread) { + poll_thread.join(); + SDL_QuitSubSystem(SDL_INIT_JOYSTICK); + } +} + +Common::ParamPackage SDLEventToButtonParamPackage(SDLState& state, const SDL_Event& event) { + Common::ParamPackage params({{"engine", "sdl"}}); + + switch (event.type) { + case SDL_JOYAXISMOTION: { + auto joystick = state.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", "+"); + params.Set("threshold", "0.5"); + } else { + params.Set("direction", "-"); + params.Set("threshold", "-0.5"); + } + break; + } + case SDL_JOYBUTTONUP: { + auto joystick = state.GetSDLJoystickBySDLID(event.jbutton.which); + params.Set("port", joystick->GetPort()); + params.Set("guid", joystick->GetGUID()); + params.Set("button", event.jbutton.button); + break; + } + case SDL_JOYHATMOTION: { + auto joystick = state.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: + params.Set("direction", "up"); + break; + case SDL_HAT_DOWN: + params.Set("direction", "down"); + break; + case SDL_HAT_LEFT: + params.Set("direction", "left"); + break; + case SDL_HAT_RIGHT: + params.Set("direction", "right"); + break; + default: + return {}; + } + break; + } + } + return params; +} + +namespace Polling { + +class SDLPoller : public InputCommon::Polling::DevicePoller { +public: + explicit SDLPoller(SDLState& state_) : state(state_) {} + + void Start() override { + state.event_queue.Clear(); + state.polling = true; + } + + void Stop() override { + state.polling = false; + } + +protected: + SDLState& state; +}; + +class SDLButtonPoller final : public SDLPoller { +public: + explicit SDLButtonPoller(SDLState& state_) : SDLPoller(state_) {} + + Common::ParamPackage GetNextInput() override { + SDL_Event event; + while (state.event_queue.Pop(event)) { + switch (event.type) { + case SDL_JOYAXISMOTION: + if (std::abs(event.jaxis.value / 32767.0) < 0.5) { + break; + } + case SDL_JOYBUTTONUP: + case SDL_JOYHATMOTION: + return SDLEventToButtonParamPackage(state, event); + } + } + return {}; + } +}; + +class SDLAnalogPoller final : public SDLPoller { +public: + explicit SDLAnalogPoller(SDLState& state_) : SDLPoller(state_) {} + + void Start() override { + SDLPoller::Start(); + + // Reset stored axes + analog_xaxis = -1; + analog_yaxis = -1; + analog_axes_joystick = -1; + } + + Common::ParamPackage GetNextInput() override { + SDL_Event event; + while (state.event_queue.Pop(event)) { + if (event.type != SDL_JOYAXISMOTION || std::abs(event.jaxis.value / 32767.0) < 0.5) { + continue; + } + // An analog device needs two axes, so we need to store the axis for later and wait for + // a second SDL event. The axes also must be from the same joystick. + int axis = event.jaxis.axis; + if (analog_xaxis == -1) { + analog_xaxis = axis; + analog_axes_joystick = event.jaxis.which; + } else if (analog_yaxis == -1 && analog_xaxis != axis && + analog_axes_joystick == event.jaxis.which) { + analog_yaxis = axis; + } + } + Common::ParamPackage params; + if (analog_xaxis != -1 && analog_yaxis != -1) { + auto joystick = state.GetSDLJoystickBySDLID(event.jaxis.which); + params.Set("engine", "sdl"); + 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; + analog_yaxis = -1; + analog_axes_joystick = -1; + return params; + } + return params; + } + +private: + int analog_xaxis = -1; + int analog_yaxis = -1; + SDL_JoystickID analog_axes_joystick = -1; +}; +} // namespace Polling + +SDLState::Pollers SDLState::GetPollers(InputCommon::Polling::DeviceType type) { + Pollers pollers; + + switch (type) { + case InputCommon::Polling::DeviceType::Analog: + pollers.emplace_back(std::make_unique<Polling::SDLAnalogPoller>(*this)); + break; + case InputCommon::Polling::DeviceType::Button: + pollers.emplace_back(std::make_unique<Polling::SDLButtonPoller>(*this)); + break; + } + + return pollers; +} + +} // namespace SDL +} // namespace InputCommon diff --git a/src/input_common/sdl/sdl_impl.h b/src/input_common/sdl/sdl_impl.h new file mode 100644 index 000000000..2579741d6 --- /dev/null +++ b/src/input_common/sdl/sdl_impl.h @@ -0,0 +1,63 @@ +// Copyright 2018 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <atomic> +#include <memory> +#include <thread> +#include "common/threadsafe_queue.h" +#include "input_common/sdl/sdl.h" + +union SDL_Event; +using SDL_Joystick = struct _SDL_Joystick; +using SDL_JoystickID = s32; + +namespace InputCommon::SDL { + +class SDLJoystick; +class SDLButtonFactory; +class SDLAnalogFactory; + +class SDLState : public State { +public: + /// Initializes and registers SDL device factories + SDLState(); + + /// Unregisters SDL device factories and shut them down. + ~SDLState() override; + + /// Handle SDL_Events for joysticks from SDL_PollEvent + void HandleGameControllerEvent(const SDL_Event& event); + + std::shared_ptr<SDLJoystick> GetSDLJoystickBySDLID(SDL_JoystickID sdl_id); + std::shared_ptr<SDLJoystick> GetSDLJoystickByGUID(const std::string& guid, int port); + + /// Get all DevicePoller that use the SDL backend for a specific device type + Pollers GetPollers(Polling::DeviceType type) override; + + /// Used by the Pollers during config + std::atomic<bool> polling = false; + Common::SPSCQueue<SDL_Event> event_queue; + +private: + void InitJoystick(int joystick_index); + void CloseJoystick(SDL_Joystick* sdl_joystick); + + /// Needs to be called before SDL_QuitSubSystem. + void CloseJoysticks(); + + /// Map of GUID of a list of corresponding virtual Joysticks + std::unordered_map<std::string, std::vector<std::shared_ptr<SDLJoystick>>> joystick_map; + std::mutex joystick_map_mutex; + + std::shared_ptr<SDLButtonFactory> button_factory; + std::shared_ptr<SDLAnalogFactory> analog_factory; + + bool start_thread = false; + std::atomic<bool> initialized = false; + + std::thread poll_thread; +}; +} // namespace InputCommon::SDL |