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/*************************************************************************
NoisePlugin.cpp - overwrites the selected range of samples with noise
-------------------
begin : Wed Dec 12 2001
copyright : (C) 2001 by Thomas Eschenbacher
email : Thomas.Eschenbacher@gmx.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "config.h"
#include <new>
#include <errno.h>
#include <KLocalizedString> // for the i18n macro
#include "libkwave/Connect.h"
#include "libkwave/MultiTrackSource.h"
#include "libkwave/MultiTrackWriter.h"
#include "libkwave/PluginManager.h"
#include "libkwave/SampleSink.h"
#include "libkwave/SampleSource.h"
#include "libkwave/undo/UndoTransactionGuard.h"
#include "libgui/OverViewCache.h"
#include "NoiseDialog.h"
#include "NoiseGenerator.h"
#include "NoisePlugin.h"
KWAVE_PLUGIN(noise, NoisePlugin)
//***************************************************************************
Kwave::NoisePlugin::NoisePlugin(QObject *parent, const QVariantList &args)
:Kwave::FilterPlugin(parent, args), m_level(1.0), m_last_level(0.0)
{
}
//***************************************************************************
Kwave::NoisePlugin::~NoisePlugin()
{
}
//***************************************************************************
int Kwave::NoisePlugin::interpreteParameters(QStringList ¶ms)
{
bool ok;
QString param;
// evaluate the parameter list
if (params.count() != 2) return -EINVAL;
param = params[0];
m_level = param.toDouble(&ok);
Q_ASSERT(ok);
if (!ok) return -EINVAL;
param = params[1];
unsigned int mode = param.toUInt(&ok);
Q_ASSERT(ok);
if (!ok || (mode > 2)) return -EINVAL;
// all parameters accepted
return 0;
}
//***************************************************************************
Kwave::PluginSetupDialog *Kwave::NoisePlugin::createDialog(QWidget *parent)
{
Q_UNUSED(parent)
// initialize the overview cache
Kwave::SignalManager &mgr = manager().signalManager();
QVector<unsigned int> tracks;
sample_index_t first, last;
sample_index_t length = selection(&tracks, &first, &last, true);
Kwave::OverViewCache *overview_cache =
new(std::nothrow) Kwave::OverViewCache(mgr, first, length,
tracks.isEmpty() ? nullptr : &tracks);
Q_ASSERT(overview_cache);
// create the setup dialog
Kwave::NoiseDialog *dialog =
new(std::nothrow) Kwave::NoiseDialog(parentWidget(), overview_cache);
if (!dialog) {
delete overview_cache;
return nullptr;
}
// connect the signals for detecting value changes in pre-listen mode
connect(dialog, SIGNAL(levelChanged(double)),
this, SLOT(setNoiseLevel(double)));
return dialog;
}
//***************************************************************************
Kwave::SampleSource *Kwave::NoisePlugin::createFilter(unsigned int tracks)
{
return new(std::nothrow)
Kwave::MultiTrackSource<Kwave::NoiseGenerator, true>(tracks);
}
//***************************************************************************
bool Kwave::NoisePlugin::paramsChanged()
{
return (!qFuzzyCompare(m_level, m_last_level));
}
//***************************************************************************
void Kwave::NoisePlugin::updateFilter(Kwave::SampleSource *filter,
bool force)
{
if (!filter) return;
if (!qFuzzyCompare(m_level, m_last_level) || force)
filter->setAttribute(SLOT(setNoiseLevel(QVariant)),
QVariant(m_level));
m_last_level = m_level;
}
//***************************************************************************
QString Kwave::NoisePlugin::actionName()
{
return i18n("Add Noise");
}
//***************************************************************************
void Kwave::NoisePlugin::setNoiseLevel(double level)
{
m_level = level;
}
//***************************************************************************
#include "NoisePlugin.moc"
//***************************************************************************
//***************************************************************************
#include "moc_NoisePlugin.cpp"
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