mpvwidget.h

/*  This is part of KokoVP

    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef PLAYERWINDOW_H
#define PLAYERWINDOW_H

#include <QOpenGLWidget>

struct mpv_handle;
struct mpv_render_context;
struct mpv_event;

class MpvWidget;

class PropertyObserver : public QObject
{
    Q_OBJECT
    friend class MpvWidget;
public:
    PropertyObserver(MpvWidget *mpv, QString name);
    QString name() { return p_name; }
    QVariant get();
    void set(QVariant value);
    void setDefVal(QVariant value) { defVal = value; }
    void reset() { set(defVal); }
    void setRelative(double relValue);
signals:
    void changed(QVariant value);
    void changedString(QString value);
    void changedBool(bool value);
    void changedInt(int value);
    void changedDouble(double value);
private:
    static const QVariant no;
    static const QStringList tracksProps;

    void captureProperty(QString propName, QVariant data);
    QString p_name;
    QVariant defVal;
    MpvWidget *p_mpv;
    int internalType;
};

class MpvWidget: public QOpenGLWidget
{
    Q_OBJECT
    friend class PropertyObserver;
public:
    MpvWidget(QWidget *parent = 0, Qt::WindowFlags f = Qt::WindowFlags());
    ~MpvWidget();
    void command(const QVariant& params);
    void setProp(const QString& name, const QVariant& value);
    QVariant getProp(const QString& name) const;
    void setOption(const QString& name, const QVariant& value);
    PropertyObserver *propertyObserver(QString name);
signals:
    void endFile(bool wasStopped);
    void fileLoaded();
protected:
    virtual void paintOverlay(QPainter &painter) {};
protected slots:
    void processMPVevents();
    void maybeUpdate();
private:
    void initializeGL() override;

    static void catchMPVevents(void *ctx);
    static void on_update(void *ctx);
    static void *get_proc_address(void *ctx, const char *name);

    void handleMPVevents(mpv_event *event);

    mpv_handle *mpv;
    mpv_render_context *mpv_gl;
    QMap<QString, PropertyObserver*> observers;
    void paintEvent(QPaintEvent *event) override;
};



#endif // PLAYERWINDOW_H