1 files changed, 105 insertions, 0 deletions
diff --git a/src/3rdparty/phonon/gstreamer/effectmanager.cpp b/src/3rdparty/phonon/gstreamer/effectmanager.cpp
new file mode 100644
index 0000000000..563e6fc47d
--- /dev/null
+++ b/src/3rdparty/phonon/gstreamer/effectmanager.cpp
@@ -0,0 +1,105 @@
+/*  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