/***

    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
};

#include "project/footage.h"
#include "project/media.h"

extern "C" {
    #include <libavformat/avformat.h>
    #include <libavcodec/avcodec.h>
    #include <libswscale/swscale.h>
    #include <libswresample/swresample.h>
}

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