view data/model/AlignmentModel.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.

/* -*- 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 _ALIGNMENT_MODEL_H_
#define _ALIGNMENT_MODEL_H_

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

#include <QString>
#include <QStringList>

class SparseTimeValueModel;

class AlignmentModel : public Model
{
    Q_OBJECT

public:
    AlignmentModel(Model *reference,
                   Model *aligned,
                   Model *inputModel, // probably an AggregateWaveModel; I take ownership
                   SparseTimeValueModel *path); // I take ownership
    ~AlignmentModel();

    virtual bool isOK() const;
    virtual size_t getStartFrame() const;
    virtual size_t getEndFrame() const;
    virtual size_t getSampleRate() const;
    virtual Model *clone() const;
    virtual bool isReady(int *completion = 0) const;
    virtual const ZoomConstraint *getZoomConstraint() const;

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

    const Model *getReferenceModel() const;
    const Model *getAlignedModel() const;

    size_t toReference(size_t frame) const;
    size_t fromReference(size_t frame) const;

    void setPath(PathModel *path);

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

signals:
    void modelChanged();
    void modelChanged(size_t startFrame, size_t endFrame);
    void completionChanged();

protected slots:
    void pathChanged();
    void pathChanged(size_t startFrame, size_t endFrame);
    void pathCompletionChanged();

protected:
    Model *m_reference; // I don't own this
    Model *m_aligned; // I don't own this

    Model *m_inputModel; // I own this

    SparseTimeValueModel *m_rawPath; // I own this
    mutable PathModel *m_path; // I own this
    mutable PathModel *m_reversePath; // I own this
    bool m_pathBegun;
    bool m_pathComplete;

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

    size_t align(PathModel *path, size_t frame) const;
};

#endif