annotate base/Preferences.cpp @ 164:da3701a3953e

* Make resampler quality configurable
* Fall back to linear resampling when playing very fast
* Switch off transient detection in time stretcher when playing very very fast

/* -*- 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 Chris Cannam.
    
    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 "Preferences.h"

#include "Exceptions.h"

#include "TempDirectory.h"

#include <QDir>
#include <QFileInfo>
#include <QMutex>
#include <QSettings>

Preferences *
Preferences::m_instance = 0;

Preferences *
Preferences::getInstance()
{
    if (!m_instance) m_instance = new Preferences();
    return m_instance;
}

Preferences::Preferences() :
    m_smoothSpectrogram(true),
    m_tuningFrequency(440),
    m_propertyBoxLayout(VerticallyStacked),
    m_windowType(HanningWindow),
    m_resampleQuality(1)
{
    QSettings settings;
    settings.beginGroup("Preferences");
    m_smoothSpectrogram = settings.value("smooth-spectrogram", true).toBool();
    m_tuningFrequency = settings.value("tuning-frequency", 440.f).toDouble();
    m_propertyBoxLayout = PropertyBoxLayout
        (settings.value("property-box-layout", int(VerticallyStacked)).toInt());
    m_windowType = WindowType
        (settings.value("window-type", int(HanningWindow)).toInt());
    m_resampleQuality = settings.value("resample-quality", 1).toInt();
    settings.endGroup();
}

Preferences::~Preferences()
{
}

Preferences::PropertyList
Preferences::getProperties() const
{
    PropertyList props;
    props.push_back("Smooth Spectrogram");
    props.push_back("Tuning Frequency");
    props.push_back("Property Box Layout");
    props.push_back("Window Type");
    props.push_back("Resample Quality");
    return props;
}

QString
Preferences::getPropertyLabel(const PropertyName &name) const
{
    if (name == "Smooth Spectrogram") {
        return tr("Smooth spectrogram display by zero padding FFT");
    }
    if (name == "Tuning Frequency") {
        return tr("Frequency of concert A");
    }
    if (name == "Property Box Layout") {
        return tr("Property box layout");
    }
    if (name == "Window Type") {
        return tr("Spectral analysis window shape");
    }
    if (name == "Resample Quality") {
        return tr("Resampler quality");
    }
    return name;
}

Preferences::PropertyType
Preferences::getPropertyType(const PropertyName &name) const
{
    if (name == "Smooth Spectrogram") {
        return ToggleProperty;
    }
    if (name == "Tuning Frequency") {
        return RangeProperty;
    }
    if (name == "Property Box Layout") {
        return ValueProperty;
    }
    if (name == "Window Type") {
        return ValueProperty;
    }
    if (name == "Resample Quality") {
        return ValueProperty;
    }
    return InvalidProperty;
}

int
Preferences::getPropertyRangeAndValue(const PropertyName &name,
                                      int *min, int *max) const
{
    if (name == "Smooth Spectrogram") {
        if (min) *min = 0;
        if (max) *max = 1;
        return m_smoothSpectrogram ? 1 : 0;
    }

    //!!! freq mapping

    if (name == "Property Box Layout") {
        if (min) *min = 0;
        if (max) *max = 1;
        return m_propertyBoxLayout == Layered ? 1 : 0;
    }        

    if (name == "Window Type") {
        if (min) *min = int(RectangularWindow);
        if (max) *max = int(BlackmanHarrisWindow);
        return int(m_windowType);
    }

    if (name == "Resample Quality") {
        if (min) *min = 0;
        if (max) *max = 2;
        return m_resampleQuality;
    }

    return 0;
}

QString
Preferences::getPropertyValueLabel(const PropertyName &name,
                                   int value) const
{
    if (name == "Property Box Layout") {
        if (value == 0) return tr("Show boxes for all panes");
        else return tr("Show box for current pane only");
    }
    if (name == "Window Type") {
        switch (WindowType(value)) {
        case RectangularWindow: return tr("Rectangular");
        case BartlettWindow: return tr("Triangular");
        case HammingWindow: return tr("Hamming");
        case HanningWindow: return tr("Hanning");
        case BlackmanWindow: return tr("Blackman");
        case GaussianWindow: return tr("Gaussian");
        case ParzenWindow: return tr("Parzen");
        case NuttallWindow: return tr("Nuttall");
        case BlackmanHarrisWindow: return tr("Blackman-Harris");
        }
    }
    if (name == "Resample Quality") {
        switch (value) {
        case 0: return tr("Fastest");
        case 1: return tr("Medium quality");
        case 2: return tr("Highest quality");
        }
    }
    return "";
}

QString
Preferences::getPropertyContainerName() const
{
    return tr("Preferences");
}

QString
Preferences::getPropertyContainerIconName() const
{
    return "preferences";
}

void
Preferences::setProperty(const PropertyName &name, int value) 
{
    if (name == "Smooth Spectrogram") {
        setSmoothSpectrogram(value > 0.1);
    } else if (name == "Tuning Frequency") {
        //!!!
    } else if (name == "Property Box Layout") {
        setPropertyBoxLayout(value == 0 ? VerticallyStacked : Layered);
    } else if (name == "Window Type") {
        setWindowType(WindowType(value));
    } else if (name == "Resample Quality") {
        setResampleQuality(value);
    }
}

void
Preferences::setSmoothSpectrogram(bool smooth)
{
    if (m_smoothSpectrogram != smooth) {
        m_smoothSpectrogram = smooth;
        QSettings settings;
        settings.beginGroup("Preferences");
        settings.setValue("smooth-spectrogram", smooth);
        settings.endGroup();
        emit propertyChanged("Smooth Spectrogram");
    }
}

void
Preferences::setTuningFrequency(float freq)
{
    if (m_tuningFrequency != freq) {
        m_tuningFrequency = freq;
        QSettings settings;
        settings.beginGroup("Preferences");
        settings.setValue("tuning-frequency", freq);
        settings.endGroup();
        emit propertyChanged("Tuning Frequency");
    }
}

void
Preferences::setPropertyBoxLayout(PropertyBoxLayout layout)
{
    if (m_propertyBoxLayout != layout) {
        m_propertyBoxLayout = layout;
        QSettings settings;
        settings.beginGroup("Preferences");
        settings.setValue("property-box-layout", int(layout));
        settings.endGroup();
        emit propertyChanged("Property Box Layout");
    }
}

void
Preferences::setWindowType(WindowType type)
{
    if (m_windowType != type) {
        m_windowType = type;
        QSettings settings;
        settings.beginGroup("Preferences");
        settings.setValue("window-type", int(type));
        settings.endGroup();
        emit propertyChanged("Window Type");
    }
}

void
Preferences::setResampleQuality(int q)
{
    if (m_resampleQuality != q) {
        m_resampleQuality = q;
        QSettings settings;
        settings.beginGroup("Preferences");
        settings.setValue("resample-quality", q);
        settings.endGroup();
        emit propertyChanged("Resample Quality");
    }
}