midiplayereventlist.h

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/*****************************************************************************
 * Copyright 2016-2017 Karolin Stange, Christoph Wick, and Haye Hinrichsen
 *
 * This file is part of JustIntonation.
 *
 * JustIntonation 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.
 *
 * JustIntonation 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 JustIntonation. If not, see http://www.gnu.org/licenses/.
 *****************************************************************************/

//=============================================================================
//                      Midi Player Events and Event List
//=============================================================================

#ifndef MIDIPLAYEREVENTLIST_H
#define MIDIPLAYEREVENTLIST_H

#include <QObject>
#include <QMutex>
#include <QMultiMap>

#include "system/shared.h"


struct MidiPlayerEvent
{
    MidiPlayerEvent(quint8 track=0, double deltaticks=0,
                    quint8 command=0, quint8 byte1=0, quint8 byte2=0);

    quint8 track;           
    double deltaticks;      
    quint8 command;         
    quint8 byte1;           
    quint8 byte2;           
};



class MidiPlayerEventList
{
public:
    MidiPlayerEventList();

    void clear();                               // Clear all data
    void insert (double time,                  // Insert a new midi event
                 const MidiPlayerEvent &event);
    void rewind();                              // Reset iterator
    void advance();                             // Advance iterator
    bool atEnd() const;                         // Is iterator at the end?
    const MidiPlayerEvent getEvent() const;     // get iterator-pointed event
    quint32 getCumulativeTime() const;          // get cumulative time
    int getSize() const;                        // get total number of all events

    double getProgressInPercent() const;        // get actual playing process
    void setProgress (double percent);          // set iterator at a percentage

    void writeListInReadableForm (QString filename);
private:
    typedef QMultiMap<double,MidiPlayerEvent> MidiEventList;

    MidiEventList mEventList;                   
    quint32 mMaxTime;                           
    MidiEventList::Iterator pEventIterator;     
    mutable QMutex mAccessMutex;                
};

#endif // MIDIPLAYEREVENTLIST_H