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-rw-r--r--src/input_common/CMakeLists.txt27
-rwxr-xr-xsrc/input_common/analog_from_button.cpp58
-rwxr-xr-xsrc/input_common/analog_from_button.h31
-rw-r--r--src/input_common/keyboard.cpp82
-rw-r--r--src/input_common/keyboard.h45
-rw-r--r--src/input_common/main.cpp63
-rw-r--r--src/input_common/main.h29
-rw-r--r--src/input_common/sdl/sdl.cpp202
-rw-r--r--src/input_common/sdl/sdl.h19
9 files changed, 556 insertions, 0 deletions
diff --git a/src/input_common/CMakeLists.txt b/src/input_common/CMakeLists.txt
new file mode 100644
index 000000000..cfe5caaa3
--- /dev/null
+++ b/src/input_common/CMakeLists.txt
@@ -0,0 +1,27 @@
+set(SRCS
+ analog_from_button.cpp
+ keyboard.cpp
+ main.cpp
+ )
+
+set(HEADERS
+ analog_from_button.h
+ keyboard.h
+ main.h
+ )
+
+if(SDL2_FOUND)
+ set(SRCS ${SRCS} sdl/sdl.cpp)
+ set(HEADERS ${HEADERS} sdl/sdl.h)
+ include_directories(${SDL2_INCLUDE_DIR})
+endif()
+
+create_directory_groups(${SRCS} ${HEADERS})
+
+add_library(input_common STATIC ${SRCS} ${HEADERS})
+target_link_libraries(input_common common core)
+
+if(SDL2_FOUND)
+ target_link_libraries(input_common ${SDL2_LIBRARY})
+ set_property(TARGET input_common APPEND PROPERTY COMPILE_DEFINITIONS HAVE_SDL2)
+endif()
diff --git a/src/input_common/analog_from_button.cpp b/src/input_common/analog_from_button.cpp
new file mode 100755
index 000000000..e1a260762
--- /dev/null
+++ b/src/input_common/analog_from_button.cpp
@@ -0,0 +1,58 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "input_common/analog_from_button.h"
+
+namespace InputCommon {
+
+class Analog final : public Input::AnalogDevice {
+public:
+ using Button = std::unique_ptr<Input::ButtonDevice>;
+
+ Analog(Button up_, Button down_, Button left_, Button right_, Button modifier_,
+ float modifier_scale_)
+ : up(std::move(up_)), down(std::move(down_)), left(std::move(left_)),
+ right(std::move(right_)), modifier(std::move(modifier_)),
+ modifier_scale(modifier_scale_) {}
+
+ std::tuple<float, float> GetStatus() const override {
+ constexpr float SQRT_HALF = 0.707106781f;
+ int x = 0, y = 0;
+
+ if (right->GetStatus())
+ ++x;
+ if (left->GetStatus())
+ --x;
+ if (up->GetStatus())
+ ++y;
+ if (down->GetStatus())
+ --y;
+
+ float coef = modifier->GetStatus() ? modifier_scale : 1.0f;
+ return std::make_tuple(x * coef * (y == 0 ? 1.0f : SQRT_HALF),
+ y * coef * (x == 0 ? 1.0f : SQRT_HALF));
+ }
+
+private:
+ Button up;
+ Button down;
+ Button left;
+ Button right;
+ Button modifier;
+ float modifier_scale;
+};
+
+std::unique_ptr<Input::AnalogDevice> AnalogFromButton::Create(const Common::ParamPackage& params) {
+ const std::string null_engine = Common::ParamPackage{{"engine", "null"}}.Serialize();
+ auto up = Input::CreateDevice<Input::ButtonDevice>(params.Get("up", null_engine));
+ auto down = Input::CreateDevice<Input::ButtonDevice>(params.Get("down", null_engine));
+ auto left = Input::CreateDevice<Input::ButtonDevice>(params.Get("left", null_engine));
+ auto right = Input::CreateDevice<Input::ButtonDevice>(params.Get("right", null_engine));
+ auto modifier = Input::CreateDevice<Input::ButtonDevice>(params.Get("modifier", null_engine));
+ auto modifier_scale = params.Get("modifier_scale", 0.5f);
+ return std::make_unique<Analog>(std::move(up), std::move(down), std::move(left),
+ std::move(right), std::move(modifier), modifier_scale);
+}
+
+} // namespace InputCommon
diff --git a/src/input_common/analog_from_button.h b/src/input_common/analog_from_button.h
new file mode 100755
index 000000000..bbd583dd9
--- /dev/null
+++ b/src/input_common/analog_from_button.h
@@ -0,0 +1,31 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include "core/frontend/input.h"
+
+namespace InputCommon {
+
+/**
+ * An analog device factory that takes direction button devices and combines them into a analog
+ * device.
+ */
+class AnalogFromButton final : public Input::Factory<Input::AnalogDevice> {
+public:
+ /**
+ * Creates an analog device from direction button devices
+ * @param params contains parameters for creating the device:
+ * - "up": a serialized ParamPackage for creating a button device for up direction
+ * - "down": a serialized ParamPackage for creating a button device for down direction
+ * - "left": a serialized ParamPackage for creating a button device for left direction
+ * - "right": a serialized ParamPackage for creating a button device for right direction
+ * - "modifier": a serialized ParamPackage for creating a button device as the modifier
+ * - "modifier_scale": a float for the multiplier the modifier gives to the position
+ */
+ std::unique_ptr<Input::AnalogDevice> Create(const Common::ParamPackage& params) override;
+};
+
+} // namespace InputCommon
diff --git a/src/input_common/keyboard.cpp b/src/input_common/keyboard.cpp
new file mode 100644
index 000000000..a8fc01f2e
--- /dev/null
+++ b/src/input_common/keyboard.cpp
@@ -0,0 +1,82 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <atomic>
+#include <list>
+#include <mutex>
+#include "input_common/keyboard.h"
+
+namespace InputCommon {
+
+class KeyButton final : public Input::ButtonDevice {
+public:
+ explicit KeyButton(std::shared_ptr<KeyButtonList> key_button_list_)
+ : key_button_list(key_button_list_) {}
+
+ ~KeyButton();
+
+ bool GetStatus() const override {
+ return status.load();
+ }
+
+ friend class KeyButtonList;
+
+private:
+ std::shared_ptr<KeyButtonList> key_button_list;
+ std::atomic<bool> status{false};
+};
+
+struct KeyButtonPair {
+ int key_code;
+ KeyButton* key_button;
+};
+
+class KeyButtonList {
+public:
+ void AddKeyButton(int key_code, KeyButton* key_button) {
+ std::lock_guard<std::mutex> guard(mutex);
+ list.push_back(KeyButtonPair{key_code, key_button});
+ }
+
+ void RemoveKeyButton(const KeyButton* key_button) {
+ std::lock_guard<std::mutex> guard(mutex);
+ list.remove_if(
+ [key_button](const KeyButtonPair& pair) { return pair.key_button == key_button; });
+ }
+
+ void ChangeKeyStatus(int key_code, bool pressed) {
+ std::lock_guard<std::mutex> guard(mutex);
+ for (const KeyButtonPair& pair : list) {
+ if (pair.key_code == key_code)
+ pair.key_button->status.store(pressed);
+ }
+ }
+
+private:
+ std::mutex mutex;
+ std::list<KeyButtonPair> list;
+};
+
+Keyboard::Keyboard() : key_button_list{std::make_shared<KeyButtonList>()} {}
+
+KeyButton::~KeyButton() {
+ key_button_list->RemoveKeyButton(this);
+}
+
+std::unique_ptr<Input::ButtonDevice> Keyboard::Create(const Common::ParamPackage& params) {
+ int key_code = params.Get("code", 0);
+ std::unique_ptr<KeyButton> button = std::make_unique<KeyButton>(key_button_list);
+ key_button_list->AddKeyButton(key_code, button.get());
+ return std::move(button);
+}
+
+void Keyboard::PressKey(int key_code) {
+ key_button_list->ChangeKeyStatus(key_code, true);
+}
+
+void Keyboard::ReleaseKey(int key_code) {
+ key_button_list->ChangeKeyStatus(key_code, false);
+}
+
+} // namespace InputCommon
diff --git a/src/input_common/keyboard.h b/src/input_common/keyboard.h
new file mode 100644
index 000000000..76359aa30
--- /dev/null
+++ b/src/input_common/keyboard.h
@@ -0,0 +1,45 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include "core/frontend/input.h"
+
+namespace InputCommon {
+
+class KeyButtonList;
+
+/**
+ * A button device factory representing a keyboard. It receives keyboard events and forward them
+ * to all button devices it created.
+ */
+class Keyboard final : public Input::Factory<Input::ButtonDevice> {
+public:
+ Keyboard();
+
+ /**
+ * Creates a button device from a keyboard key
+ * @param params contains parameters for creating the device:
+ * - "code": the code of the key to bind with the button
+ */
+ std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override;
+
+ /**
+ * Sets the status of all buttons bound with the key to pressed
+ * @param key_code the code of the key to press
+ */
+ void PressKey(int key_code);
+
+ /**
+ * Sets the status of all buttons bound with the key to released
+ * @param key_code the code of the key to release
+ */
+ void ReleaseKey(int key_code);
+
+private:
+ std::shared_ptr<KeyButtonList> key_button_list;
+};
+
+} // namespace InputCommon
diff --git a/src/input_common/main.cpp b/src/input_common/main.cpp
new file mode 100644
index 000000000..699f41e6b
--- /dev/null
+++ b/src/input_common/main.cpp
@@ -0,0 +1,63 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <memory>
+#include "common/param_package.h"
+#include "input_common/analog_from_button.h"
+#include "input_common/keyboard.h"
+#include "input_common/main.h"
+#ifdef HAVE_SDL2
+#include "input_common/sdl/sdl.h"
+#endif
+
+namespace InputCommon {
+
+static std::shared_ptr<Keyboard> keyboard;
+
+void Init() {
+ keyboard = std::make_shared<InputCommon::Keyboard>();
+ Input::RegisterFactory<Input::ButtonDevice>("keyboard", keyboard);
+ Input::RegisterFactory<Input::AnalogDevice>("analog_from_button",
+ std::make_shared<InputCommon::AnalogFromButton>());
+#ifdef HAVE_SDL2
+ SDL::Init();
+#endif
+}
+
+void Shutdown() {
+ Input::UnregisterFactory<Input::ButtonDevice>("keyboard");
+ keyboard.reset();
+ Input::UnregisterFactory<Input::AnalogDevice>("analog_from_button");
+
+#ifdef HAVE_SDL2
+ SDL::Shutdown();
+#endif
+}
+
+Keyboard* GetKeyboard() {
+ return keyboard.get();
+}
+
+std::string GenerateKeyboardParam(int key_code) {
+ Common::ParamPackage param{
+ {"engine", "keyboard"}, {"code", std::to_string(key_code)},
+ };
+ return param.Serialize();
+}
+
+std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left, int key_right,
+ int key_modifier, float modifier_scale) {
+ Common::ParamPackage circle_pad_param{
+ {"engine", "analog_from_button"},
+ {"up", GenerateKeyboardParam(key_up)},
+ {"down", GenerateKeyboardParam(key_down)},
+ {"left", GenerateKeyboardParam(key_left)},
+ {"right", GenerateKeyboardParam(key_right)},
+ {"modifier", GenerateKeyboardParam(key_modifier)},
+ {"modifier_scale", std::to_string(modifier_scale)},
+ };
+ return circle_pad_param.Serialize();
+}
+
+} // namespace InputCommon
diff --git a/src/input_common/main.h b/src/input_common/main.h
new file mode 100644
index 000000000..140bbd014
--- /dev/null
+++ b/src/input_common/main.h
@@ -0,0 +1,29 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <string>
+
+namespace InputCommon {
+
+/// Initializes and registers all built-in input device factories.
+void Init();
+
+/// Unresisters all build-in input device factories and shut them down.
+void Shutdown();
+
+class Keyboard;
+
+/// Gets the keyboard button device factory.
+Keyboard* GetKeyboard();
+
+/// Generates a serialized param package for creating a keyboard button device
+std::string GenerateKeyboardParam(int key_code);
+
+/// Generates a serialized param package for creating an analog device taking input from keyboard
+std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left, int key_right,
+ int key_modifier, float modifier_scale);
+
+} // namespace InputCommon
diff --git a/src/input_common/sdl/sdl.cpp b/src/input_common/sdl/sdl.cpp
new file mode 100644
index 000000000..ae0206909
--- /dev/null
+++ b/src/input_common/sdl/sdl.cpp
@@ -0,0 +1,202 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <cmath>
+#include <memory>
+#include <string>
+#include <tuple>
+#include <unordered_map>
+#include <SDL.h>
+#include "common/math_util.h"
+#include "input_common/sdl/sdl.h"
+
+namespace InputCommon {
+
+namespace SDL {
+
+class SDLJoystick;
+class SDLButtonFactory;
+class SDLAnalogFactory;
+static std::unordered_map<int, std::weak_ptr<SDLJoystick>> joystick_list;
+static std::shared_ptr<SDLButtonFactory> button_factory;
+static std::shared_ptr<SDLAnalogFactory> analog_factory;
+
+static bool initialized = false;
+
+class SDLJoystick {
+public:
+ explicit SDLJoystick(int joystick_index)
+ : joystick{SDL_JoystickOpen(joystick_index), SDL_JoystickClose} {
+ if (!joystick) {
+ LOG_ERROR(Input, "failed to open joystick %d", joystick_index);
+ }
+ }
+
+ bool GetButton(int button) const {
+ if (!joystick)
+ return {};
+ SDL_JoystickUpdate();
+ return SDL_JoystickGetButton(joystick.get(), button) == 1;
+ }
+
+ std::tuple<float, float> GetAnalog(int axis_x, int axis_y) const {
+ if (!joystick)
+ return {};
+ SDL_JoystickUpdate();
+ float x = SDL_JoystickGetAxis(joystick.get(), axis_x) / 32767.0f;
+ float y = SDL_JoystickGetAxis(joystick.get(), axis_y) / 32767.0f;
+ 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);
+ }
+
+ bool GetHatDirection(int hat, Uint8 direction) const {
+ return (SDL_JoystickGetHat(joystick.get(), hat) & direction) != 0;
+ }
+
+private:
+ std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> joystick;
+};
+
+class SDLButton final : public Input::ButtonDevice {
+public:
+ explicit SDLButton(std::shared_ptr<SDLJoystick> joystick_, int button_)
+ : joystick(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(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 SDLAnalog final : public Input::AnalogDevice {
+public:
+ SDLAnalog(std::shared_ptr<SDLJoystick> joystick_, int axis_x_, int axis_y_)
+ : joystick(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;
+};
+
+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
+ * - "button"(optional): the index of the button to bind
+ * - "hat"(optional): the index of the hat to bind as direction buttons
+ * - "direction"(only used for hat): the direction name of the hat to bind. Can be "up",
+ * "down", "left" or "right"
+ */
+ std::unique_ptr<Input::ButtonDevice> Create(const Common::ParamPackage& params) override {
+ const int joystick_index = params.Get("joystick", 0);
+
+ 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;
+ }
+ return std::make_unique<SDLDirectionButton>(GetJoystick(joystick_index), hat,
+ direction);
+ }
+
+ const int button = params.Get("button", 0);
+ return std::make_unique<SDLButton>(GetJoystick(joystick_index), 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:
+ * - "joystick": the index of the joystick to bind
+ * - "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 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);
+ }
+};
+
+void Init() {
+ if (SDL_Init(SDL_INIT_JOYSTICK) < 0) {
+ LOG_CRITICAL(Input, "SDL_Init(SDL_INIT_JOYSTICK) failed with: %s", SDL_GetError());
+ } else {
+ using namespace Input;
+ RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>());
+ RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>());
+ initialized = true;
+ }
+}
+
+void Shutdown() {
+ if (initialized) {
+ using namespace Input;
+ UnregisterFactory<ButtonDevice>("sdl");
+ UnregisterFactory<AnalogDevice>("sdl");
+ SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
+ }
+}
+
+} // namespace SDL
+} // namespace InputCommon
diff --git a/src/input_common/sdl/sdl.h b/src/input_common/sdl/sdl.h
new file mode 100644
index 000000000..3e72debcc
--- /dev/null
+++ b/src/input_common/sdl/sdl.h
@@ -0,0 +1,19 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "core/frontend/input.h"
+
+namespace InputCommon {
+namespace SDL {
+
+/// Initializes and registers SDL device factories
+void Init();
+
+/// Unresisters SDL device factories and shut them down.
+void Shutdown();
+
+} // namespace SDL
+} // namespace InputCommon