view data/model/AlignmentModel.cpp @ 1196:c7b9c902642f spectrogram-minor-refactor

Fix threshold in spectrogram -- it wasn't working in the last release.
There is a new protocol for this. Formerly the threshold parameter had a
range from -50dB to 0 with the default at -50, and -50 treated internally
as "no threshold". However, there was a hardcoded, hidden internal threshold
for spectrogram colour mapping at -80dB with anything below this being rounded
to zero. Now the threshold parameter has range -81 to -1 with the default
at -80, -81 is treated internally as "no threshold", and there is no hidden
internal threshold. So the default behaviour is the same as before, an
effective -80dB threshold, but it is now possible to change this in both
directions. Sessions reloaded from prior versions may look slightly different
because, if the session says there should be no threshold, there will now
actually be no threshold instead of having the hidden internal one.

Still need to do something in the UI to make it apparent that the -81dB
setting removes the threshold entirely. This is at least no worse than the
previous, also obscured, magic -50dB setting.

/* -*- 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"

//#define DEBUG_ALIGNMENT_MODEL 1

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)
{
    if (m_rawPath) {

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

        connect(m_rawPath, SIGNAL(modelChangedWithin(sv_frame_t, sv_frame_t)),
                this, SLOT(pathChangedWithin(sv_frame_t, sv_frame_t)));
        
        connect(m_rawPath, SIGNAL(completionChanged()),
                this, SLOT(pathCompletionChanged()));

        constructPath();
        constructReversePath();
    }

    if (m_rawPath && m_rawPath->isReady()) {
        pathCompletionChanged();
    }
}

AlignmentModel::~AlignmentModel()
{
    if (m_inputModel) m_inputModel->aboutToDelete();
    delete m_inputModel;

    if (m_rawPath) m_rawPath->aboutToDelete();
    delete m_rawPath;

    if (m_path) m_path->aboutToDelete();
    delete m_path;

    if (m_reversePath) m_reversePath->aboutToDelete();
    delete m_reversePath;
}

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

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

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

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

bool
AlignmentModel::isReady(int *completion) const
{
    if (!m_pathBegun && m_rawPath) {
        if (completion) *completion = 0;
        return false;
    }
    if (m_pathComplete) {
        if (completion) *completion = 100;
        return true;
    }
    if (!m_rawPath) {
        // lack of raw path could mean path is complete (in which case
        // m_pathComplete true above) or else no alignment has been
        // set at all yet (this case)
        if (completion) *completion = 0;
        return false;
    }
    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;
}

sv_frame_t
AlignmentModel::toReference(sv_frame_t frame) const
{
#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "AlignmentModel::toReference(" << frame << ")" << endl;
#endif
    if (!m_path) {
        if (!m_rawPath) return frame;
        constructPath();
    }
    return align(m_path, frame);
}

sv_frame_t
AlignmentModel::fromReference(sv_frame_t frame) const
{
#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "AlignmentModel::fromReference(" << frame << ")" << endl;
#endif
    if (!m_reversePath) {
        if (!m_rawPath) return frame;
        constructReversePath();
    }
    return align(m_reversePath, frame);
}

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

void
AlignmentModel::pathChangedWithin(sv_frame_t, sv_frame_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);

#ifdef DEBUG_ALIGNMENT_MODEL
        cerr << "AlignmentModel::pathCompletionChanged: completion = "
                  << completion << endl;
#endif

        m_pathComplete = (completion == 100);

        if (m_pathComplete) {

            constructPath();
            constructReversePath();
            
            if (m_inputModel) m_inputModel->aboutToDelete();
            delete m_inputModel;
            m_inputModel = 0;
        }
    }

    emit completionChanged();
}

void
AlignmentModel::constructPath() const
{
    if (!m_path) {
        if (!m_rawPath) {
            cerr << "ERROR: AlignmentModel::constructPath: "
                      << "No raw path available" << 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) {
        sv_frame_t frame = i->frame;
        double value = i->value;
        sv_frame_t rframe = lrint(value * m_aligned->getSampleRate());
        m_path->addPoint(PathPoint(frame, rframe));
    }

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

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

    PathModel::PointList points = m_path->getPoints();
        
    for (PathModel::PointList::const_iterator i = points.begin();
         i != points.end(); ++i) {
        sv_frame_t frame = i->frame;
        sv_frame_t rframe = i->mapframe;
        m_reversePath->addPoint(PathPoint(rframe, frame));
    }

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

sv_frame_t
AlignmentModel::align(PathModel *path, sv_frame_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()) {
#ifdef DEBUG_ALIGNMENT_MODEL
        cerr << "AlignmentModel::align: No points" << endl;
#endif
        return frame;
    }        

#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "AlignmentModel::align: frame " << frame << " requested" << endl;
#endif

    PathModel::Point point(frame);
    PathModel::PointList::const_iterator i = points.lower_bound(point);
    if (i == points.end()) {
#ifdef DEBUG_ALIGNMENT_MODEL
        cerr << "Note: i == points.end()" << endl;
#endif
        --i;
    }
    while (i != points.begin() && i->frame > frame) --i;

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

    sv_frame_t followingFrame = foundFrame;
    sv_frame_t followingMapFrame = foundMapFrame;

    if (++i != points.end()) {
#ifdef DEBUG_ALIGNMENT_MODEL
        cerr << "another point available" << endl;
#endif
        followingFrame = i->frame;
        followingMapFrame = i->mapframe;
    } else {
#ifdef DEBUG_ALIGNMENT_MODEL
        cerr << "no other point available" << endl;
#endif
    }        

#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "foundFrame = " << foundFrame << ", foundMapFrame = " << foundMapFrame
         << ", followingFrame = " << followingFrame << ", followingMapFrame = "
         << followingMapFrame << endl;
#endif
    
    if (foundMapFrame < 0) return 0;

    sv_frame_t resultFrame = foundMapFrame;

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

#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "AlignmentModel::align: resultFrame = " << resultFrame << endl;
#endif

    return resultFrame;
}

void
AlignmentModel::setPathFrom(SparseTimeValueModel *rawpath)
{
    if (m_rawPath) m_rawPath->aboutToDelete();
    delete m_rawPath;

    m_rawPath = rawpath;

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

    connect(m_rawPath, SIGNAL(modelChangedWithin(sv_frame_t, sv_frame_t)),
            this, SLOT(pathChangedWithin(sv_frame_t, sv_frame_t)));
        
    connect(m_rawPath, SIGNAL(completionChanged()),
            this, SLOT(pathCompletionChanged()));
    
    constructPath();
    constructReversePath();

    if (m_rawPath->isReady()) {
        pathCompletionChanged();
    }        
}

void
AlignmentModel::setPath(PathModel *path)
{
    if (m_path) m_path->aboutToDelete();
    delete m_path;
    m_path = path;
#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "AlignmentModel::setPath: path = " << m_path << endl;
#endif
    constructReversePath();
#ifdef DEBUG_ALIGNMENT_MODEL
    cerr << "AlignmentModel::setPath: after construction path = "
              << m_path << ", rpath = " << m_reversePath << endl;
#endif
}
    
void
AlignmentModel::toXml(QTextStream &stream,
                      QString indent,
                      QString extraAttributes) const
{
    if (!m_path) {
        SVDEBUG << "AlignmentModel::toXml: no path" << endl;
        return;
    }

    m_path->toXml(stream, indent, "");

    Model::toXml(stream, indent,
                 QString("type=\"alignment\" reference=\"%1\" aligned=\"%2\" path=\"%3\" %4")
                 .arg(getObjectExportId(m_reference))
                 .arg(getObjectExportId(m_aligned))
                 .arg(getObjectExportId(m_path))
                 .arg(extraAttributes));
}