Mercurial > hg > svcore
view data/fileio/MIDIFileWriter.h @ 1008:d9e0e59a1581
When using an aggregate model to pass data to a transform, zero-pad the shorter input to the duration of the longer rather than truncating the longer. (This is better behaviour for e.g. MATCH, and in any case the code was previously truncating incorrectly and ending up with garbage data at the end.)
author | Chris Cannam |
---|---|
date | Fri, 14 Nov 2014 13:51:33 +0000 |
parents | d6bd5751b8f6 |
children | c7e9afcbf070 |
line wrap: on
line source
/* -*- 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 <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, int 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; int 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