/*
    QMPlay2 is a video and audio player.
    Copyright (C) 2010-2020  Błażej Szczygieł

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#pragma once

#include <ChapterProgramInfo.hpp>
#include <ModuleCommon.hpp>
#include <StreamInfo.hpp>
#include <Playlist.hpp>

#include <QString>

class Packet;

class QMPLAY2SHAREDLIB_EXPORT Demuxer : protected ModuleCommon, public BasicIO
{
public:
    class FetchTracks
    {
    public:
        inline FetchTracks(bool onlyTracks) :
            onlyTracks(onlyTracks),
            isOK(true)
        {}

        Playlist::Entries tracks;
        bool onlyTracks, isOK;
    };

    static bool create(const QString &url, IOController<Demuxer> &demuxer, FetchTracks *fetchTracks = nullptr);

    ~Demuxer();

    virtual bool metadataChanged() const;

    virtual bool isStillImage() const;

    inline QList<StreamInfo *> streamsInfo() const
    {
        return streams_info;
    }

    virtual QList<ProgramInfo> getPrograms() const;
    virtual QList<ChapterInfo> getChapters() const;

    virtual QString name() const = 0;
    virtual QString title() const = 0;
    virtual QList<QMPlay2Tag> tags() const;
    virtual bool getReplayGain(bool album, float &gain_db, float &peak) const
    {
        Q_UNUSED(album)
        Q_UNUSED(gain_db)
        Q_UNUSED(peak)
        return false;
    }
    virtual qint64 size() const;
    virtual double length() const = 0;
    virtual int bitrate() const = 0;
    virtual QByteArray image(bool forceCopy = false) const;

    virtual bool localStream() const;
    virtual bool dontUseBuffer() const;

    virtual bool seek(double pos, bool backward) = 0;
    virtual bool read(Packet &, int &) = 0;

private:
    virtual bool open(const QString &url) = 0;

    virtual Playlist::Entries fetchTracks(const QString &url, bool &ok);

protected:
    QList<StreamInfo *> streams_info;
};
