previewgenerator.h

/***

    Olive - Non-Linear Video Editor
    Copyright (C) 2019  Olive Team

    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 3 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, see <http://www.gnu.org/licenses/>.

***/

#ifndef PREVIEWGENERATOR_H
#define PREVIEWGENERATOR_H

#include <QThread>
#include <QSemaphore>

enum IconType {
    ICON_TYPE_VIDEO,
    ICON_TYPE_AUDIO,
    ICON_TYPE_IMAGE,
    ICON_TYPE_ERROR
};

struct Footage;
struct FootageStream;
struct AVFormatContext;
class Media;

class PreviewGenerator : public QThread
{
    Q_OBJECT
public:
    PreviewGenerator(Media*, Footage*, bool);
    void run();
    void cancel();
signals:
    void set_icon(int, bool);
private:
    void parse_media();
    bool retrieve_preview(const QString &hash);
    void generate_waveform();
    void finalize_media();
    AVFormatContext* fmt_ctx;
    Media* media;
    Footage* footage;
    bool retrieve_duration;
    bool contains_still_image;
    bool replace;
    bool cancelled;
    QString data_path;
    QString get_thumbnail_path(const QString &hash, const FootageStream &ms);
    QString get_waveform_path(const QString& hash, const FootageStream &ms);
};

#endif // PREVIEWGENERATOR_H