view data/model/AlignmentModel.h @ 299:576be0d0d218

* Merge transform directory from sv-match-alignment branch
  (the previous comment included notes for this stuff, but I missed it
  in the actual merge)
* Fix crash when a transform fails to create an output model and the
  thread that created the transform then deletes its input model thinking
  it's no longer needed, even though the transform run thread is still
  using it -- fix is to wait() on the transform before returning the
  null output model

/* -*- 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"

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;

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

    size_t toReference(size_t frame) const;
    size_t fromReference(size_t frame) 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_path; // I own this
    mutable SparseTimeValueModel *m_reversePath; // I own this
    bool m_pathComplete;

    void constructReversePath() const;

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

#endif