previewWidget.hpp

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#ifndef PREVIEWWIDGET_HPP
#define PREVIEWWIDGET_HPP
 
#include <QOpenGLWidget>
#include <QOpenGLFunctions>
#include <QSharedMemory>
#include <QOpenGLVertexArrayObject>
#include <QTimer>
#include <string_view>
 
#include "ipc_frame.h"
#include "ipc_frame_unix.h"
 
class PreviewWidget : public QOpenGLWidget{
public:
        PreviewWidget(QWidget *parent);
        ~PreviewWidget();
 
        void setKey(std::string_view key);
        void start();
        void stop();
 
protected:
        void initializeGL();
        void resizeGL(int w, int h);
        void paintGL();
 
private:
        bool loadFrame();
        void render();
 
        GLuint vertexBuffer = 0;
        GLuint program = 0;
        GLuint frame_texture = 0;
        GLuint testbars_texture = 0;
 
        GLuint selected_texture = 0;
 
        QOpenGLVertexArrayObject vao;
 
        GLfloat scaleVec[2];
        int vidW = 0;
        int vidH = 0;
        int width = 0;
        int height = 0;
 
        void setVidSize(int w, int h);
        void calculateScale();
 
        Ipc_frame_uniq ipc_frame;
        Ipc_frame_reader_uniq ipc_frame_reader;
        QTimer timer;
};
 
#endif