view data/model/AlignmentModel.cpp @ 360:ac300d385ab2

* Various fixes to object lifetime management, particularly in the spectrum
  layer and for notification of main model deletion.
  The main purpose of this is to improve the behaviour of the spectrum, but I
  think it may also help with #1840922 Various crashes in Layer Summary window.

/* -*- 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.
*/

#include "AlignmentModel.h"

#include "SparseTimeValueModel.h"

AlignmentModel::AlignmentModel(Model *reference,
                               Model *aligned,
                               Model *inputModel,
			       SparseTimeValueModel *path) :
    m_reference(reference),
    m_aligned(aligned),
    m_inputModel(inputModel),
    m_rawPath(path),
    m_path(0),
    m_reversePath(0),
    m_pathBegun(false),
    m_pathComplete(false)
{
    connect(m_rawPath, SIGNAL(modelChanged()),
            this, SLOT(pathChanged()));

    connect(m_rawPath, SIGNAL(modelChanged(size_t, size_t)),
            this, SLOT(pathChanged(size_t, size_t)));

    connect(m_rawPath, SIGNAL(completionChanged()),
            this, SLOT(pathCompletionChanged()));

    constructPath();
    constructReversePath();
}

AlignmentModel::~AlignmentModel()
{
    delete m_inputModel;
    delete m_rawPath;
    delete m_path;
    delete m_reversePath;
}

bool
AlignmentModel::isOK() const
{
    if (m_rawPath) return m_rawPath->isOK();
    else return true;
}

size_t
AlignmentModel::getStartFrame() const
{
    size_t a = m_reference->getStartFrame();
    size_t b = m_aligned->getStartFrame();
    return std::min(a, b);
}

size_t
AlignmentModel::getEndFrame() const
{
    size_t a = m_reference->getEndFrame();
    size_t b = m_aligned->getEndFrame();
    return std::max(a, b);
}

size_t
AlignmentModel::getSampleRate() const
{
    return m_reference->getSampleRate();
}

Model *
AlignmentModel::clone() const
{
    return new AlignmentModel
        (m_reference, m_aligned,
         m_inputModel ? m_inputModel->clone() : 0,
         m_rawPath ? static_cast<SparseTimeValueModel *>(m_rawPath->clone()) : 0);
}

bool
AlignmentModel::isReady(int *completion) const
{
    if (!m_pathBegun) {
        if (completion) *completion = 0;
        return false;
    }
    if (m_pathComplete || !m_rawPath) {
        if (completion) *completion = 100;
        return true;
    }
    return m_rawPath->isReady(completion);
}

const ZoomConstraint *
AlignmentModel::getZoomConstraint() const
{
    return 0;
}

const Model *
AlignmentModel::getReferenceModel() const
{
    return m_reference;
}

const Model *
AlignmentModel::getAlignedModel() const
{
    return m_aligned;
}

size_t
AlignmentModel::toReference(size_t frame) const
{
//    std::cerr << "AlignmentModel::toReference(" << frame << ")" << std::endl;
    if (!m_path) constructPath();
    return align(m_path, frame);
}

size_t
AlignmentModel::fromReference(size_t frame) const
{
//    std::cerr << "AlignmentModel::fromReference(" << frame << ")" << std::endl;
    if (!m_reversePath) constructReversePath();
    return align(m_reversePath, frame);
}

void
AlignmentModel::pathChanged()
{
    if (m_pathComplete) {
        std::cerr << "AlignmentModel: deleting raw path model" << std::endl;
        delete m_rawPath;
        m_rawPath = 0;
    }
}

void
AlignmentModel::pathChanged(size_t, size_t)
{
    if (!m_pathComplete) return;
    constructPath();
    constructReversePath();
}    

void
AlignmentModel::pathCompletionChanged()
{
    if (!m_rawPath) return;
    m_pathBegun = true;

    if (!m_pathComplete) {

        int completion = 0;
        m_rawPath->isReady(&completion);

//        std::cerr << "AlignmentModel::pathCompletionChanged: completion = "
//                  << completion << std::endl;

        m_pathComplete = (completion == 100);

        if (m_pathComplete) {

            constructPath();
            constructReversePath();

            delete m_inputModel;
            m_inputModel = 0;
        }
    }

    emit completionChanged();
}

void
AlignmentModel::constructPath() const
{
    if (!m_path) {
        if (!m_rawPath) {
            std::cerr << "ERROR: AlignmentModel::constructPath: "
                      << "No raw path available" << std::endl;
            return;
        }
        m_path = new PathModel
            (m_rawPath->getSampleRate(), m_rawPath->getResolution(), false);
    } else {
        if (!m_rawPath) return;
    }
        
    m_path->clear();

    SparseTimeValueModel::PointList points = m_rawPath->getPoints();
        
    for (SparseTimeValueModel::PointList::const_iterator i = points.begin();
         i != points.end(); ++i) {
        long frame = i->frame;
        float value = i->value;
        long rframe = lrintf(value * m_aligned->getSampleRate());
        m_path->addPoint(PathPoint(frame, rframe));
    }

//    std::cerr << "AlignmentModel::constructPath: " << m_path->getPointCount() << " points, at least " << (2 * m_path->getPointCount() * (3 * sizeof(void *) + sizeof(int) + sizeof(PathPoint))) << " bytes" << std::endl;
}

void
AlignmentModel::constructReversePath() const
{
    if (!m_reversePath) {
        if (!m_rawPath) {
            std::cerr << "ERROR: AlignmentModel::constructReversePath: "
                      << "No raw path available" << std::endl;
            return;
        }
        m_reversePath = new PathModel
            (m_rawPath->getSampleRate(), m_rawPath->getResolution(), false);
    } else {
        if (!m_rawPath) return;
    }
        
    m_reversePath->clear();

    SparseTimeValueModel::PointList points = m_rawPath->getPoints();
        
    for (SparseTimeValueModel::PointList::const_iterator i = points.begin();
         i != points.end(); ++i) {
        long frame = i->frame;
        float value = i->value;
        long rframe = lrintf(value * m_aligned->getSampleRate());
        m_reversePath->addPoint(PathPoint(rframe, frame));
    }

//    std::cerr << "AlignmentModel::constructReversePath: " << m_reversePath->getPointCount() << " points, at least " << (2 * m_reversePath->getPointCount() * (3 * sizeof(void *) + sizeof(int) + sizeof(PathPoint))) << " bytes" << std::endl;
}

size_t
AlignmentModel::align(PathModel *path, size_t frame) const
{
    if (!path) return frame;

    // The path consists of a series of points, each with frame equal
    // to the frame on the source model and mapframe equal to the
    // frame on the target model.  Both should be monotonically
    // increasing.

    const PathModel::PointList &points = path->getPoints();

    if (points.empty()) {
//        std::cerr << "AlignmentModel::align: No points" << std::endl;
        return frame;
    }        

    PathModel::Point point(frame);
    PathModel::PointList::const_iterator i = points.lower_bound(point);
    if (i == points.end()) --i;
    while (i != points.begin() && i->frame > long(frame)) --i;

    long foundFrame = i->frame;
    long foundMapFrame = i->mapframe;

    long followingFrame = foundFrame;
    long followingMapFrame = foundMapFrame;

    if (++i != points.end()) {
        followingFrame = i->frame;
        followingMapFrame = i->mapframe;
    }

    if (foundMapFrame < 0) return 0;

    size_t resultFrame = foundMapFrame;

    if (followingFrame != foundFrame && long(frame) > foundFrame) {
        float interp =
            float(frame - foundFrame) /
            float(followingFrame - foundFrame);
        resultFrame += lrintf((followingMapFrame - foundMapFrame) * interp);
    }

//    std::cerr << "AlignmentModel::align: resultFrame = " << resultFrame << std::endl;

    return resultFrame;
}