midiimport.h

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#ifndef MIDIIMPORT_H_
#define MIDIIMPORT_H_

#include <QString>
#include <QStack>

#include "core/voice.h"
#include "core/rest.h"
#include "core/keysignature.h"
#include "core/clef.h"
#include "core/timesignature.h"
#include "core/barline.h"
#include "core/lyricscontext.h"
#include "core/syllable.h"
#include "core/playablelength.h"
#include "core/diatonicpitch.h"

#include "import/import.h"

class QTextStream;
class CAMidiDevice;
class CAMidiImportEvent;

class CAMidiImport : public CAImport {
public:
        // Constructor
        CAMidiImport( QTextStream *in=0 );

        // Destructor
        virtual ~CAMidiImport();

        // close midi in file after import
        void closeFile();

        // where the real work is done
        CADocument *importDocumentImpl();
        CASheet *importSheetImpl();

        const QString readableStatus();

private:
        void initMidiImport();

        static const QRegExp WHITESPACE_DELIMITERS;
        static const QRegExp SYNTAX_DELIMITERS;
        static const QRegExp DELIMITERS;

        // Internal time signature
        struct CATime {
                int beats;
                int beat;
        };

        enum CALilyPondDepth {
                Score,
                Layout,
                Voice,
                Chord
        };

        inline CAVoice *curVoice() { return _curVoice; }
        inline void setCurVoice(CAVoice *voice) { _curVoice = voice; }

        const QString parseNextElement();
        const QString peekNextElement();
        void addError(QString description, int lineError = 0, int charError = 0);

        // Helper functions //
        CAPlayableLength playableLengthFromLilyPond( QString &playableElt, bool parse=false );

        bool isNote(const QString elt);
        CADiatonicPitch relativePitchFromLilyPond(QString &note, CADiatonicPitch prevPitch, bool parse=false);
        bool isRest(const QString elt);
        CARest::CARestType restTypeFromLilyPond(QString& rest, bool parse=false);
        CAClef::CAPredefinedClefType predefinedClefTypeFromLilyPond( const QString clef );
        int clefOffsetFromLilyPond( const QString clef );
        CABarline::CABarlineType barlineTypeFromLilyPond(const QString bar);
        CADiatonicKey::CAGender diatonicKeyGenderFromLilyPond(QString gender);
        CATime timeSigFromLilyPond(QString time);

        CAMusElement* findSharedElement(CAMusElement *elt);

        // Getter/Setter methods //
        inline QString& in() { return *stream()->string(); }
        inline CALilyPondDepth curDepth() { return _depth.top(); }
        inline void pushDepth(CALilyPondDepth depth) { _depth.push(depth); }
        inline CALilyPondDepth popDepth() { return _depth.pop(); }
        inline int curLine() { return _curLine; }
        inline int curChar() { return _curChar; }

        // Attributes
        CAVoice *_curVoice;
        CASlur *_curSlur;
        CASlur *_curPhrasingSlur;
        QStack<CALilyPondDepth> _depth; // which block is currently processed
        int _curLine, _curChar;
        QList<QString> _errors;
        QList<QString> _warnings;

        //inline CAVoice *templateVoice() { return _templateVoice; }
        //CAVoice *_templateVoice; // used when importing voice to set the staff etc.

        // Helper functions //
        int getVariableLength(QByteArray *x );
        QByteArray getHead(QByteArray *x);
        int getByte(QByteArray *x);
        int getWord16(QByteArray *x);
        int getWord24(QByteArray *x);
        int getWord32(QByteArray *x);
        QByteArray getString(QByteArray *x, int len);
        void printQByteArray( QByteArray x );   // debugging only
        int _dataIndex;
        int _nextTrackIndex;
        bool _parseError;
        void noteOn( bool on, int channel, int pitch, int velocity, int time );

        enum smtpOffsComponents {
                hr, min, se, fr, ff, next
        };
        int _smtpOffset[next];
        int _microSecondsPerMidiQuarternote;

        CADocument *_document;
        QVector<QList<QList<CAMidiImportEvent*>*>*> _allChannelsEvents;
        QList<CAMidiImportEvent*> _eventsX;
        void combineMidiFileEvents();
        void quantizeMidiFileEvents();
        void exportNonChordsToOtherVoices();
        void writeMidiFileEventsToScore( CASheet *sheet );
        void writeMidiChannelEventsToVoice( int channel, CAStaff *staff, CAVoice *voice );
};

#endif /* MIDIIMPORT_H_ */