Mercurial > hg > svcore
view data/fileio/MIDIFileWriter.h @ 1473:f52bf66b9096 plugin-path-config
Provide means of getting the initial environment values
author | Chris Cannam |
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date | Mon, 04 Jun 2018 15:43:27 +0100 |
parents | 48e9f538e6e9 |
children | ad5f892c0c4d |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. 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 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ /* This is a modified version of a source file from the Rosegarden MIDI and audio sequencer and notation editor. This file copyright 2000-2007 Richard Bown and Chris Cannam and copyright 2007 QMUL. */ #ifndef _MIDI_FILE_WRITER_H_ #define _MIDI_FILE_WRITER_H_ #include "base/RealTime.h" #include "base/BaseTypes.h" #include <QString> #include <vector> #include <map> #include <fstream> class MIDIEvent; class NoteExportable; /** * Write a MIDI file. This includes file write code for generic * simultaneous-track MIDI files, but the conversion stage only * supports a single-track MIDI file with fixed tempo, time signature * and timing division. */ class MIDIFileWriter { public: MIDIFileWriter(QString path, const NoteExportable *exportable, sv_samplerate_t sampleRate, // used to convert exportable sample timings float tempo = 120.f); virtual ~MIDIFileWriter(); virtual bool isOK() const; virtual QString getError() const; virtual void write(); protected: typedef std::vector<MIDIEvent *> MIDITrack; typedef std::map<unsigned int, MIDITrack> MIDIComposition; typedef enum { MIDI_SINGLE_TRACK_FILE = 0x00, MIDI_SIMULTANEOUS_TRACK_FILE = 0x01, MIDI_SEQUENTIAL_TRACK_FILE = 0x02, MIDI_FILE_BAD_FORMAT = 0xFF } MIDIFileFormatType; std::string intToMIDIBytes(int number) const; std::string longToMIDIBytes(unsigned long number) const; std::string longToVarBuffer(unsigned long number) const; unsigned long getMIDITimeForTime(RealTime t) const; bool writeHeader(); bool writeTrack(int track); bool writeComposition(); bool convert(); QString m_path; const NoteExportable *m_exportable; sv_samplerate_t m_sampleRate; float m_tempo; int m_timingDivision; // pulses per quarter note MIDIFileFormatType m_format; unsigned int m_numberOfTracks; MIDIComposition m_midiComposition; std::ofstream *m_midiFile; QString m_error; }; #endif