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/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gst/interfaces/propertyprobe.h>
#include "effectmanager.h"
#include "backend.h"
#include "gsthelper.h"
/*
* This class manages the list of currently
* available audio effects.
*/
QT_BEGIN_NAMESPACE
namespace Phonon
{
namespace Gstreamer
{
EffectInfo::EffectInfo(const QString &name, const QString&description, const QString&author)
: m_name(name)
, m_description(description)
, m_author(author) {}
EffectManager::EffectManager(Backend *backend)
: QObject(backend)
, m_backend(backend)
{
GList* factoryList = gst_registry_get_feature_list(gst_registry_get_default (), GST_TYPE_ELEMENT_FACTORY);
QString name, klass, description, author;
for (GList* iter = g_list_first(factoryList) ; iter != NULL ; iter = g_list_next(iter)) {
GstPluginFeature *feature = GST_PLUGIN_FEATURE(iter->data);
klass = gst_element_factory_get_klass(GST_ELEMENT_FACTORY(feature));
if ( klass == "Filter/Effect/Audio" ) {
name = GST_PLUGIN_FEATURE_NAME(feature);
// These plugins simply make no sense to the frontend:
// "audiorate" Should be internal
// "volume" not needed
// "equalizer-nbands" not really useful at the moment
// These plugins simply dont work or have major stability issues:
// "iir" Does not seem to do much at the moment
// "audioinvert" Only works for some streams, should be invesigated
// "lpwsinc" Crashes for large values of filter kernel
// "name" Crashes for large values of filter kernel
// Seems to be working, but not well tested:
// name == "rglimiter" Seems functional
// name == "rgvolume" Seems to be working
QString pluginString = qgetenv("PHONON_GST_ALL_EFFECTS");
bool acceptAll = pluginString.toInt();
if (acceptAll
// Plugins that have been accepted so far
|| name == "audiopanorama"
|| name == "audioamplify"
|| name == "audiodynamic"
|| name == "equalizer-10bands"
|| name == "speed")
{
description = gst_element_factory_get_description (GST_ELEMENT_FACTORY(feature));
author = gst_element_factory_get_author (GST_ELEMENT_FACTORY(feature));
EffectInfo *effect = new EffectInfo(name, description, author);
m_audioEffectList.append(effect);
}
}
}
g_list_free(factoryList);
}
EffectManager::~EffectManager()
{
qDeleteAll(m_audioEffectList);
m_audioEffectList.clear();
}
/**
* Returns a list of available audio effects
*/
const QList<EffectInfo*> EffectManager::audioEffects() const
{
return m_audioEffectList;
}
}
}
QT_END_NAMESPACE
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