annotate data/fileio/MIDIFileWriter.h @ 1346:75ad55315db4 3.0-integration

More work on getting tests (especially file encoding ones) running on Windows. Various problems here to do with interaction with test filenames in Hg repos
author Chris Cannam
date Fri, 06 Jan 2017 15:44:55 +0000
parents c7e9afcbf070
children 48e9f538e6e9
rev   line source
Chris@301 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@301 2
Chris@301 3 /*
Chris@301 4 Sonic Visualiser
Chris@301 5 An audio file viewer and annotation editor.
Chris@301 6 Centre for Digital Music, Queen Mary, University of London.
Chris@301 7
Chris@301 8 This program is free software; you can redistribute it and/or
Chris@301 9 modify it under the terms of the GNU General Public License as
Chris@301 10 published by the Free Software Foundation; either version 2 of the
Chris@301 11 License, or (at your option) any later version. See the file
Chris@301 12 COPYING included with this distribution for more information.
Chris@301 13 */
Chris@301 14
Chris@301 15
Chris@301 16 /*
Chris@301 17 This is a modified version of a source file from the
Chris@301 18 Rosegarden MIDI and audio sequencer and notation editor.
Chris@301 19 This file copyright 2000-2007 Richard Bown and Chris Cannam
Chris@301 20 and copyright 2007 QMUL.
Chris@301 21 */
Chris@301 22
Chris@301 23 #ifndef _MIDI_FILE_WRITER_H_
Chris@301 24 #define _MIDI_FILE_WRITER_H_
Chris@301 25
Chris@301 26 #include "base/RealTime.h"
Chris@1048 27 #include "base/BaseTypes.h"
Chris@301 28
Chris@301 29 #include <QString>
Chris@301 30
Chris@301 31 #include <vector>
Chris@301 32 #include <map>
Chris@301 33 #include <fstream>
Chris@301 34
Chris@301 35 class MIDIEvent;
Chris@852 36 class NoteExportable;
Chris@301 37
Chris@301 38 /**
Chris@301 39 * Write a MIDI file. This includes file write code for generic
Chris@301 40 * simultaneous-track MIDI files, but the conversion stage only
Chris@301 41 * supports a single-track MIDI file with fixed tempo, time signature
Chris@301 42 * and timing division.
Chris@301 43 */
Chris@301 44 class MIDIFileWriter
Chris@301 45 {
Chris@301 46 public:
Chris@852 47 MIDIFileWriter(QString path,
Chris@852 48 const NoteExportable *exportable,
Chris@1048 49 sv_samplerate_t sampleRate, // used to convert exportable sample timings
Chris@852 50 float tempo = 120.f);
Chris@301 51 virtual ~MIDIFileWriter();
Chris@301 52
Chris@301 53 virtual bool isOK() const;
Chris@301 54 virtual QString getError() const;
Chris@301 55
Chris@301 56 virtual void write();
Chris@301 57
Chris@301 58 protected:
Chris@301 59 typedef std::vector<MIDIEvent *> MIDITrack;
Chris@301 60 typedef std::map<unsigned int, MIDITrack> MIDIComposition;
Chris@301 61
Chris@301 62 typedef enum {
Chris@301 63 MIDI_SINGLE_TRACK_FILE = 0x00,
Chris@301 64 MIDI_SIMULTANEOUS_TRACK_FILE = 0x01,
Chris@301 65 MIDI_SEQUENTIAL_TRACK_FILE = 0x02,
Chris@301 66 MIDI_FILE_BAD_FORMAT = 0xFF
Chris@301 67 } MIDIFileFormatType;
Chris@301 68
Chris@301 69 std::string intToMIDIBytes(int number) const;
Chris@301 70 std::string longToMIDIBytes(unsigned long number) const;
Chris@301 71 std::string longToVarBuffer(unsigned long number) const;
Chris@301 72
Chris@301 73 unsigned long getMIDITimeForTime(RealTime t) const;
Chris@301 74
Chris@301 75 bool writeHeader();
Chris@301 76 bool writeTrack(int track);
Chris@301 77 bool writeComposition();
Chris@301 78
Chris@301 79 bool convert();
Chris@301 80
Chris@852 81 QString m_path;
Chris@852 82 const NoteExportable *m_exportable;
Chris@1048 83 sv_samplerate_t m_sampleRate;
Chris@852 84 float m_tempo;
Chris@852 85 int m_timingDivision; // pulses per quarter note
Chris@852 86 MIDIFileFormatType m_format;
Chris@852 87 unsigned int m_numberOfTracks;
Chris@301 88
Chris@852 89 MIDIComposition m_midiComposition;
Chris@301 90
Chris@852 91 std::ofstream *m_midiFile;
Chris@852 92 QString m_error;
Chris@301 93 };
Chris@301 94
Chris@301 95 #endif