view data/model/AlignmentModel.h @ 1752:6d09d68165a4 by-id

Further review of ById: make IDs only available when adding a model to the ById store, not by querying the item directly. This means any id encountered in the wild must have been added to the store at some point (even if later released), which simplifies reasoning about lifecycles

/* -*- 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 file copyright 2007 QMUL.
    
    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.
*/

#ifndef SV_ALIGNMENT_MODEL_H
#define SV_ALIGNMENT_MODEL_H

#include "Model.h"
#include "Path.h"
#include "base/RealTime.h"

#include <QString>
#include <QStringList>

class SparseTimeValueModel;

class AlignmentModel : public Model
{
    Q_OBJECT

public:
    AlignmentModel(ModelId reference /* any model */,
                   ModelId aligned /* any model */,
                   ModelId path /* a SparseTimeValueModel */);
    ~AlignmentModel();

    bool isOK() const override;

    void setError(QString error) { m_error = error; }
    QString getError() const { return m_error; }

    sv_frame_t getStartFrame() const override;
    sv_frame_t getTrueEndFrame() const override;
    sv_samplerate_t getSampleRate() const override;
    bool isReady(int *completion = 0) const override;
    int getCompletion() const override {
        int c = 0;
        (void)isReady(&c);
        return c;
    }
    const ZoomConstraint *getZoomConstraint() const override;

    QString getTypeName() const override { return tr("Alignment"); }

    ModelId getReferenceModel() const;
    ModelId getAlignedModel() const;

    sv_frame_t toReference(sv_frame_t frame) const;
    sv_frame_t fromReference(sv_frame_t frame) const;

    void setPathFrom(ModelId pathSource); // a SparseTimeValueModel
    void setPath(const Path &path);

    void toXml(QTextStream &stream,
               QString indent = "",
               QString extraAttributes = "") const override;

    QString toDelimitedDataString(QString, DataExportOptions,
                                  sv_frame_t, sv_frame_t) const override {
        return "";
    }

signals:
    void completionChanged(ModelId);

protected slots:
    void pathSourceChangedWithin(ModelId, sv_frame_t startFrame, sv_frame_t endFrame);
    void pathSourceCompletionChanged(ModelId);

protected:
    ModelId m_reference;
    ModelId m_aligned;

    ModelId m_pathSource; // a SparseTimeValueModel

    mutable std::unique_ptr<Path> m_path;
    mutable std::unique_ptr<Path> m_reversePath;
    bool m_pathBegun;
    bool m_pathComplete;
    QString m_error;

    void constructPath() const;
    void constructReversePath() const;

    sv_frame_t performAlignment(const Path &path, sv_frame_t frame) const;
};

#endif