Mercurial > hg > svcore
view data/fileio/MIDIFileWriter.h @ 537:3cc4b7cd2aa5
* Merge from one-fftdataserver-per-fftmodel branch. This bit of
reworking (which is not described very accurately by the title of
the branch) turns the MatrixFile object into something that either
reads or writes, but not both, and separates the FFT file cache
reader and writer implementations separately. This allows the
FFT data server to have a single thread owning writers and one reader
per "customer" thread, and for all locking to be vastly simplified
and concentrated in the data server alone (because none of the
classes it makes use of is used in more than one thread at a time).
The result is faster and more trustworthy code.
author | Chris Cannam |
---|---|
date | Tue, 27 Jan 2009 13:25:10 +0000 |
parents | 73537d900d4b |
children | d6bd5751b8f6 |
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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 <QString> #include <vector> #include <map> #include <fstream> class MIDIEvent; class NoteModel; /** * 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, NoteModel *model, 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; NoteModel *m_model; bool m_modelUsesHz; 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