VideoCapture.hpp

#pragma once

#include <filesystem>

#include "wx/wx.h"
#include <wx/panel.h>
#include <wx/filepicker.h>
#include <wx/propgrid/propgrid.h>

#include <opencv2/core.hpp>
#include <opencv2/highgui.hpp>
#include <opencv2/imgproc.hpp>

#include <map>

namespace xv{

class ImagePanel;

class VideoCapture : public wxPanel
{

public:
    VideoCapture();

    VideoCapture(wxWindow * parent,
        wxWindowID id = wxID_ANY,
        const wxPoint &pos = wxDefaultPosition,
        const wxSize &size = wxDefaultSize,
        long style = wxTAB_TRAVERSAL,
        const wxString &name = wxPanelNameStr
    );

    VideoCapture(const std::string& filename);

    VideoCapture(int device);
        
#pragma region cv::VideoCapture 
    bool open(const std::string& filename);
    bool isOpened(){ return m_videoCapture.isOpened(); };

    void release(){ return m_videoCapture.release(); };

    bool grab(){ return m_videoCapture.grab(); }

    bool retrieve(cv::Mat& image, int channel = 0);

    bool read(cv::Mat& image){ return m_videoCapture.read(image); };

    double get(int propId){ return m_videoCapture.get(propId); }; 

    bool set(int propId, double value){ return m_videoCapture.set(propId, value); };

    void VideoCapture::operator>>(cv::Mat& mat){ m_videoCapture >> mat; };

    friend void operator>>(VideoCapture&, ImagePanel&);

#pragma endregion cv::VideoCapture

private:
    const static std::map <int, std::string> PROPERTY_MAP;
    const std::map < int, wxPGProperty*>  m_properties;
    static const std::string CLASS_NAME;
    cv::VideoCapture m_videoCapture;

#pragma region layout
    void init();
    void initFilePicker(wxSizer*);
    void initPropertyGrid(wxSizer*);
    void initButtons(wxSizer*);
#pragma endregion layout

#pragma region event handling
    void evtFilePickerChanged(wxFileDirPickerEvent&);
    void evtOK(wxCommandEvent&);
    void evtCancel(wxCommandEvent&);
#pragma endregion event handling
        
    wxFilePickerCtrl* m_filePickerCtrl;
    wxPropertyGrid* m_propertyGrid;
    std::tr2::sys::path m_filename;
    int m_device;
    bool m_selfHosted;//created its own parent window or embbeded in another control

    void loadProperties();
    void clearProperties();
};

}