visual.h

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/***************************************************************************
 *   Copyright (C) 2008-2024 by Ilya Kotov                                 *
 *   forkotov02@ya.ru                                                      *
 *                                                                         *
 *   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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
 ***************************************************************************/

#ifndef VISUAL_H
#define VISUAL_H

#include <QHash>
#include <QWidget>
#include "qmmp_export.h"

#define QMMP_VISUAL_INTERVAL  40
#define QMMP_VISUAL_NODE_SIZE 512 //samples

class VisualFactory;
class VisualBuffer;

class QMMP_EXPORT Visual : public QWidget
{
    Q_OBJECT
public:
    explicit Visual(QWidget *parent, Qt::WindowFlags f = Qt::WindowFlags());
    virtual ~Visual();

    static QList<VisualFactory*> factories();
    static QString file(const VisualFactory *factory);
    static void setEnabled(VisualFactory *factory, bool enable = true);
    static bool isEnabled(const VisualFactory *factory);
    static void add(Visual*visual);
    static void remove(Visual*);
    static void initialize(QWidget *parent, QObject *receiver = nullptr, const char *member = nullptr);
    static QList<Visual *> *visuals();
    static void addAudio(float *pcm, int samples, int channels, qint64 ts, qint64 delay);
    static void clearBuffer();

public slots:
    virtual void start();
    virtual void stop();
    void updateVisual();
    void changeFullScreen(bool state);

signals:
    void closedByUser();
    void fullscreenByUser(QWidget *widget, bool state);

protected:
    virtual void showEvent(QShowEvent *event) override;
    virtual void hideEvent(QHideEvent *event) override;
    virtual void closeEvent(QCloseEvent *event) override final;
    bool takeData(float *left, float *right = nullptr);
    virtual void process(float *left, float *right) = 0;
    virtual void process(bool state);
    void clear();

protected:
    QTimer *m_timer = nullptr;
    bool m_running = false;
    int m_rows = 0, m_cols = 0;
    int *m_intern_vis_data = nullptr;
    QAction *m_screenAction = nullptr;

private:
    static void checkFactories();
    static void createVisualization(VisualFactory *factory, QWidget *parent);

    static QList<VisualFactory*> *m_factories;
    static QHash<const VisualFactory*, QString> *m_files;
    static QList<Visual*> m_visuals;
    static QHash<VisualFactory*, Visual*> m_vis_map; //internal visualization
    static QWidget *m_parentClass;
    static QObject *m_receiver;
    static const char *m_member;
    static VisualBuffer m_buffer;

};

#endif