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/*
Copyright 2016-2023 melonDS team
This file is part of melonDS.
melonDS is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with melonDS. If not, see http://www.gnu.org/licenses/.
*/
#ifndef MAIN_H
#define MAIN_H
#include "glad/glad.h"
#include <QApplication>
#include <QThread>
#include <QWidget>
#include <QWindow>
#include <QMainWindow>
#include <QImage>
#include <QActionGroup>
#include <QTimer>
#include <QMutex>
#include <QScreen>
#include <QCloseEvent>
#include <atomic>
#include <variant>
#include <optional>
#include "Window.h"
#include "FrontendUtil.h"
#include "duckstation/gl/context.h"
#include "NDSCart.h"
#include "GBACart.h"
using Keep = std::monostate;
using UpdateConsoleNDSArgs = std::variant<Keep, std::unique_ptr<melonDS::NDSCart::CartCommon>>;
using UpdateConsoleGBAArgs = std::variant<Keep, std::unique_ptr<melonDS::GBACart::CartCommon>>;
namespace melonDS
{
class NDS;
}
class EmuThread : public QThread
{
Q_OBJECT
void run() override;
public:
explicit EmuThread(QObject* parent = nullptr);
void changeWindowTitle(char* title);
// to be called from the UI thread
void emuRun();
void emuPause();
void emuUnpause();
void emuStop();
void emuFrameStep();
bool emuIsRunning();
bool emuIsActive();
void initContext();
void deinitContext();
int FrontBuffer = 0;
QMutex FrontBufferLock;
void updateScreenSettings(bool filter, const WindowInfo& windowInfo, int numScreens, int* screenKind, float* screenMatrix);
/// Applies the config in args.
/// Creates a new NDS console if needed,
/// modifies the existing one if possible.
/// @return \c true if the console was updated.
/// If this returns \c false, then the existing NDS console is not modified.
bool UpdateConsole(UpdateConsoleNDSArgs&& ndsargs, UpdateConsoleGBAArgs&& gbaargs) noexcept;
std::unique_ptr<melonDS::NDS> NDS; // TODO: Proper encapsulation and synchronization
signals:
void windowUpdate();
void windowTitleChange(QString title);
void windowEmuStart();
void windowEmuStop();
void windowEmuPause();
void windowEmuReset();
void windowEmuFrameStep();
void windowLimitFPSChange();
void screenLayoutChange();
void windowFullscreenToggle();
void swapScreensToggle();
void screenEmphasisToggle();
void syncVolumeLevel();
private:
std::unique_ptr<melonDS::NDS> CreateConsole(
std::unique_ptr<melonDS::NDSCart::CartCommon>&& ndscart,
std::unique_ptr<melonDS::GBACart::CartCommon>&& gbacart
) noexcept;
void drawScreenGL();
void initOpenGL();
void deinitOpenGL();
enum EmuStatusKind
{
emuStatus_Exit,
emuStatus_Running,
emuStatus_Paused,
emuStatus_FrameStep,
};
std::atomic<EmuStatusKind> EmuStatus;
EmuStatusKind PrevEmuStatus;
EmuStatusKind EmuRunning;
constexpr static int EmuPauseStackRunning = 0;
constexpr static int EmuPauseStackPauseThreshold = 1;
int EmuPauseStack;
enum ContextRequestKind
{
contextRequest_None = 0,
contextRequest_InitGL,
contextRequest_DeInitGL
};
std::atomic<ContextRequestKind> ContextRequest = contextRequest_None;
GL::Context* oglContext = nullptr;
GLuint screenVertexBuffer, screenVertexArray;
GLuint screenTexture;
GLuint screenShaderProgram[3];
GLuint screenShaderTransformULoc, screenShaderScreenSizeULoc;
QMutex screenSettingsLock;
WindowInfo windowInfo;
float screenMatrix[Frontend::MaxScreenTransforms][6];
int screenKind[Frontend::MaxScreenTransforms];
int numScreens;
bool filter;
int lastScreenWidth = -1, lastScreenHeight = -1;
};
class MelonApplication : public QApplication
{
Q_OBJECT
public:
MelonApplication(int &argc, char** argv);
bool event(QEvent* event) override;
};
#endif // MAIN_H
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