src/3rdparty/phonon/mmf/stereowidening.cpp
changeset 18 2f34d5167611
child 33 3e2da88830cd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/phonon/mmf/stereowidening.cpp	Fri Apr 16 15:50:13 2010 +0300
@@ -0,0 +1,93 @@
+/*  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 <StereoWideningBase.h>
+#include "stereowidening.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace Phonon;
+using namespace Phonon::MMF;
+
+// Define functions which depend on concrete native effect class name
+PHONON_MMF_DEFINE_EFFECT_FUNCTIONS(StereoWidening)
+
+/*! \class MMF::StereoWidening
+  \internal
+*/
+
+StereoWidening::StereoWidening(QObject *parent, const QList<EffectParameter>& parameters)
+    :   AbstractAudioEffect::AbstractAudioEffect(parent, parameters)
+{
+
+}
+
+int StereoWidening::parameterChanged(const EffectParameter &param,
+                                 const QVariant &value)
+{
+    Q_ASSERT_X(param.id() == ParameterBase, Q_FUNC_INFO, "Invalid parameter ID");
+
+    const qreal externalLevel = value.toReal();
+    const int internalLevel = param.toInternalValue(externalLevel);
+
+    TRAPD(err, concreteEffect()->SetStereoWideningLevelL(internalLevel));
+
+    return err;
+}
+
+//-----------------------------------------------------------------------------
+// Static functions
+//-----------------------------------------------------------------------------
+
+const char* StereoWidening::description()
+{
+    return "Stereo widening";
+}
+
+bool StereoWidening::getParameters(CMdaAudioOutputStream *stream,
+    QList<EffectParameter> &parameters)
+{
+    bool supported = false;
+
+    QScopedPointer<CStereoWidening> effect;
+    TRAPD(err, effect.reset(CStereoWidening::NewL(*stream)));
+
+    if (KErrNone == err) {
+        supported = true;
+
+        const qreal defaultValue =
+            Phonon::MMF::EffectParameter::toExternalValue
+                (effect->StereoWideningLevel(), 0, 100);
+
+        EffectParameter param(
+             /* parameterId */        ParameterBase,
+             /* name */               tr("Level (%)"),
+             /* hints */              EffectParameter::IntegerHint,
+             /* defaultValue */       QVariant(defaultValue),
+             /* minimumValue */       QVariant(qreal(-1.0)),
+             /* maximumValue */       QVariant(qreal(+1.0)));
+
+        param.setInternalRange(0, 100);
+        parameters.append(param);
+    }
+
+    return supported;
+}
+
+QT_END_NAMESPACE
+