view view/AlignmentView.cpp @ 1212:a1ee3108d1d3 3.0-integration

Make the colour 3d plot renderer able to support more than one level of peak cache; introduce a second "peak" cache for the spectrogram layer that actually has a 1-1 column relationship with the underlying FFT model, and use it in addition to the existing peak cache if memory is plentiful. Makes spectrograms appear much faster in many common situations.
author Chris Cannam
date Thu, 05 Jan 2017 14:02:54 +0000
parents f2c63ec85901
children 57d192e26331 a34a2a25907c
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/* -*- 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 2006-2014 Chris Cannam and 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 "AlignmentView.h"

#include <QPainter>

#include "data/model/SparseOneDimensionalModel.h"

#include "layer/TimeInstantLayer.h"

using std::vector;

AlignmentView::AlignmentView(QWidget *w) :
    View(w, false),
    m_above(0),
    m_below(0)
{
    setObjectName(tr("AlignmentView"));
}

void
AlignmentView::globalCentreFrameChanged(sv_frame_t f)
{
    View::globalCentreFrameChanged(f);
    update();
}

void
AlignmentView::viewCentreFrameChanged(View *v, sv_frame_t f)
{
    View::viewCentreFrameChanged(v, f);
    if (v == m_above) {
	m_centreFrame = f;
	update();
    } else if (v == m_below) {
	update();
    }
}

void
AlignmentView::viewManagerPlaybackFrameChanged(sv_frame_t)
{
    update();
}

void
AlignmentView::viewAboveZoomLevelChanged(int level, bool)
{
    m_zoomLevel = level;
    update();
}

void
AlignmentView::viewBelowZoomLevelChanged(int, bool)
{
    update();
}

void
AlignmentView::setViewAbove(View *v)
{
    if (m_above) {
	disconnect(m_above, 0, this, 0);
    }

    m_above = v;

    if (m_above) {
	connect(m_above,
		SIGNAL(zoomLevelChanged(int, bool)),
		this, 
		SLOT(viewAboveZoomLevelChanged(int, bool)));
    }
}

void
AlignmentView::setViewBelow(View *v)
{
    if (m_below) {
	disconnect(m_below, 0, this, 0);
    }

    m_below = v;

    if (m_below) {
	connect(m_below,
		SIGNAL(zoomLevelChanged(int, bool)),
		this, 
		SLOT(viewBelowZoomLevelChanged(int, bool)));
    }
}

void
AlignmentView::paintEvent(QPaintEvent *)
{
    if (m_above == 0 || m_below == 0 || !m_manager) return;

    bool darkPalette = false;
    if (m_manager) darkPalette = m_manager->getGlobalDarkBackground();

    QColor fg, bg;
    if (darkPalette) {
        fg = Qt::gray;
        bg = Qt::black;
    } else {
        fg = Qt::black;
        bg = Qt::gray;
    }

    QPainter paint(this);
    paint.setPen(QPen(fg, 2));
    paint.setBrush(Qt::NoBrush);
    paint.setRenderHint(QPainter::Antialiasing, true);

    paint.fillRect(rect(), bg);

    vector<sv_frame_t> keyFrames = getKeyFrames();

    foreach (sv_frame_t f, keyFrames) {
	int ax = m_above->getXForFrame(f);
	sv_frame_t rf = m_above->alignToReference(f);
	sv_frame_t bf = m_below->alignFromReference(rf);
	int bx = m_below->getXForFrame(bf);
	paint.drawLine(ax, 0, bx, height());
    }

    paint.end();
}

vector<sv_frame_t>
AlignmentView::getKeyFrames()
{
    if (!m_above) {
	return getDefaultKeyFrames();
    }

    SparseOneDimensionalModel *m = 0;

    // get the topmost such
    for (int i = 0; i < m_above->getLayerCount(); ++i) {
	if (qobject_cast<TimeInstantLayer *>(m_above->getLayer(i))) {
	    SparseOneDimensionalModel *mm = 
		qobject_cast<SparseOneDimensionalModel *>
		(m_above->getLayer(i)->getModel());
	    if (mm) m = mm;
	}
    }

    if (!m) {
	return getDefaultKeyFrames();
    }

    vector<sv_frame_t> keyFrames;

    const SparseOneDimensionalModel::PointList pp = m->getPoints();
    for (SparseOneDimensionalModel::PointList::const_iterator pi = pp.begin();
	 pi != pp.end(); ++pi) {
	keyFrames.push_back(pi->frame);
    }

    return keyFrames;
}

vector<sv_frame_t>
AlignmentView::getDefaultKeyFrames()
{
    vector<sv_frame_t> keyFrames;

    if (!m_above || !m_manager) return keyFrames;

    sv_samplerate_t rate = m_manager->getMainModelSampleRate();
    if (rate == 0) return keyFrames;

    for (sv_frame_t f = m_above->getModelsStartFrame(); 
	 f <= m_above->getModelsEndFrame(); 
	 f += sv_frame_t(rate * 5 + 0.5)) {
	keyFrames.push_back(f);
    }
    
    return keyFrames;
}