Line data    Source code

       1              : /*
       2              :  * SPDX-License-Identifier: GPL-3.0-only
       3              :  * MuseScore-Studio-CLA-applies
       4              :  *
       5              :  * MuseScore Studio
       6              :  * Music Composition & Notation
       7              :  *
       8              :  * Copyright (C) 2021 MuseScore Limited and others
       9              :  *
      10              :  * This program is free software: you can redistribute it and/or modify
      11              :  * it under the terms of the GNU General Public License version 3 as
      12              :  * published by the Free Software Foundation.
      13              :  *
      14              :  * This program is distributed in the hope that it will be useful,
      15              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17              :  * GNU General Public License for more details.
      18              :  *
      19              :  * You should have received a copy of the GNU General Public License
      20              :  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
      21              :  */
      22              : #pragma once
      23              : 
      24              : #include <vector>
      25              : #include <QIODevice>
      26              : 
      27              : #include "../midishared/midievent.h"
      28              : 
      29              : namespace mu::iex::midi {
      30              : class MidiTrack
      31              : {
      32              :     std::multimap<int, MidiEvent> _events;
      33              :     int _outChannel;
      34              :     int _outPort;
      35              :     bool _drumTrack;
      36              : 
      37              : public:
      38              :     MidiTrack();
      39              :     ~MidiTrack();
      40              : 
      41              :     bool empty() const;
      42         1184 :     const std::multimap<int, MidiEvent>& events() const { return _events; }
      43          589 :     std::multimap<int, MidiEvent>& events() { return _events; }
      44              : 
      45         2431 :     int outChannel() const { return _outChannel; }
      46              :     void setOutChannel(int n);
      47          453 :     int outPort() const { return _outPort; }
      48          335 :     void setOutPort(int n) { _outPort = n; }
      49              : 
      50         2783 :     bool drumTrack() const { return _drumTrack; }
      51              : 
      52              :     void insert(int tick, const MidiEvent&);
      53              :     void mergeNoteOnOff();
      54              : };
      55              : 
      56              : //---------------------------------------------------------
      57              : //   MidiFile
      58              : //---------------------------------------------------------
      59              : 
      60              : class MidiFile
      61              : {
      62              :     QIODevice* fp;
      63              :     std::vector<MidiTrack> _tracks;
      64              :     int _division;
      65              :     bool _isDivisionInTps;         ///< ticks per second, alternative - ticks per beat
      66              :     int _format;                 ///< midi file format (0-2)
      67              :     bool _noRunningStatus;       ///< do not use running status on output
      68              : 
      69              :     // values used during read()
      70              :     int status;                  ///< running status
      71              :     int sstatus;                 ///< running status (not reset after meta or sysex events)
      72              :     int click;                   ///< current tick position in file
      73              :     qint64 curPos;               ///< current file byte position
      74              : 
      75              :     void writeEvent(const MidiEvent& event);
      76              : 
      77              : protected:
      78              :     // write
      79              :     bool write(const void*, qint64);
      80              :     void writeShort(int);
      81              :     void writeLong(int);
      82              :     bool writeTrack(const MidiTrack&);
      83              :     void putvl(unsigned);
      84         8119 :     void put(unsigned char c) { write(&c, 1); }
      85              :     void writeStatus(int type, int channel);
      86              : 
      87              :     // read
      88              :     void read(void*, qint64);
      89              :     int getvl();
      90              :     int readShort();
      91              :     int readLong();
      92              :     bool readEvent(MidiEvent*);
      93              :     bool readTrack();
      94              : 
      95          514 :     void resetRunningStatus() { status = -1; }
      96              : 
      97              : public:
      98              :     MidiFile();
      99              :     bool read(QIODevice*);
     100              :     bool write(QIODevice*);
     101              : 
     102          159 :     std::vector<MidiTrack>& tracks() { return _tracks; }
     103          200 :     const std::vector<MidiTrack>& tracks() const { return _tracks; }
     104              : 
     105            0 :     int format() const { return _format; }
     106           12 :     void setFormat(int fmt) { _format = fmt; }
     107              : 
     108          379 :     int division() const { return _division; }
     109          379 :     bool isDivisionInTps() const { return _isDivisionInTps; }
     110           12 :     void setDivision(int val) { _division = val; }
     111              :     void separateChannel();
     112              : };
     113              : }