Mercurial > hg > svcore
view data/fileio/MIDIFileReader.h @ 718:f3fd2988fc9b
Fix incorrect query structure for output type URIs. This led to some output RDF features being written with type URIs intended for different outputs. Also revert some SVDEBUGs to cerrs -- they are intended as user-visible errors or warnings rather than debug
author | Chris Cannam |
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date | Mon, 09 Jan 2012 16:28:54 +0000 |
parents | eb1b517f5eeb |
children | 59e7fe1b1003 |
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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 2000-2006 Richard Bown and Chris Cannam. */ #ifndef _MIDI_FILE_READER_H_ #define _MIDI_FILE_READER_H_ #include "DataFileReader.h" #include "base/RealTime.h" #include <map> #include <set> #include <vector> #include <QObject> class MIDIEvent; typedef unsigned char MIDIByte; class MIDIFileImportPreferenceAcquirer // welcome to our grand marble foyer { public: enum TrackPreference { ImportNothing, ImportSingleTrack, MergeAllTracks, MergeAllNonPercussionTracks }; virtual ~MIDIFileImportPreferenceAcquirer() { } virtual TrackPreference getTrackImportPreference (QStringList trackNames, bool haveSomePercussion, QString &singleTrack) const = 0; virtual void showError(QString error) = 0; }; class MIDIFileReader : public DataFileReader { Q_OBJECT public: MIDIFileReader(QString path, MIDIFileImportPreferenceAcquirer *pref, size_t mainModelSampleRate); virtual ~MIDIFileReader(); virtual bool isOK() const; virtual QString getError() const; virtual Model *load() const; protected: typedef std::vector<MIDIEvent *> MIDITrack; typedef std::map<unsigned int, MIDITrack> MIDIComposition; typedef std::pair<RealTime, double> TempoChange; // time, qpm typedef std::map<unsigned long, TempoChange> TempoMap; // key is MIDI time typedef enum { MIDI_SINGLE_TRACK_FILE = 0x00, MIDI_SIMULTANEOUS_TRACK_FILE = 0x01, MIDI_SEQUENTIAL_TRACK_FILE = 0x02, MIDI_FILE_BAD_FORMAT = 0xFF } MIDIFileFormatType; bool parseFile(); bool parseHeader(const std::string &midiHeader); bool parseTrack(unsigned int &trackNum); Model *loadTrack(unsigned int trackNum, Model *existingModel = 0, int minProgress = 0, int progressAmount = 100) const; bool consolidateNoteOffEvents(unsigned int track); void updateTempoMap(unsigned int track); void calculateTempoTimestamps(); RealTime getTimeForMIDITime(unsigned long midiTime) const; // Internal convenience functions // int midiBytesToInt(const std::string &bytes); long midiBytesToLong(const std::string &bytes); long getNumberFromMIDIBytes(int firstByte = -1); MIDIByte getMIDIByte(); std::string getMIDIBytes(unsigned long bytes); bool skipToNextTrack(); bool m_smpte; int m_timingDivision; // pulses per quarter note int m_fps; // if smpte int m_subframes; // if smpte MIDIFileFormatType m_format; unsigned int m_numberOfTracks; long m_trackByteCount; bool m_decrementCount; std::map<int, QString> m_trackNames; std::set<unsigned int> m_loadableTracks; std::set<unsigned int> m_percussionTracks; MIDIComposition m_midiComposition; TempoMap m_tempoMap; QString m_path; std::ifstream *m_midiFile; size_t m_fileSize; QString m_error; size_t m_mainModelSampleRate; MIDIFileImportPreferenceAcquirer *m_acquirer; }; #endif // _MIDI_FILE_READER_H_