1 /*  This file is part of the KDE project.
2 
3     Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4 
5     This library is free software: you can redistribute it and/or modify
6     it under the terms of the GNU Lesser General Public License as published by
7     the Free Software Foundation, either version 2.1 or 3 of the License.
8 
9     This library is distributed in the hope that it will be useful,
10     but WITHOUT ANY WARRANTY; without even the implied warranty of
11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12     GNU Lesser General Public License for more details.
13 
14     You should have received a copy of the GNU Lesser General Public License
15     along with this library.  If not, see <http://www.gnu.org/licenses/>.
16 */
17 
18 #ifndef Phonon_GSTREAMER_EFFECT_H
19 #define Phonon_GSTREAMER_EFFECT_H
20 
21 #include "medianode.h"
22 
23 #include <phonon/effectparameter.h>
24 #include <phonon/effectinterface.h>
25 
26 #include <QtCore/QObject>
27 
28 #include <gst/gstelement.h>
29 
30 #ifndef QT_NO_PHONON_EFFECT
31 namespace Phonon
32 {
33 namespace Gstreamer
34 {
35     class EffectInfo;
36 
37     class Effect : public QObject,
38                    public Phonon::EffectInterface,
39                    public MediaNode
40     {
41         Q_OBJECT
42         Q_INTERFACES(Phonon::EffectInterface Phonon::Gstreamer::MediaNode)
43         public:
44             Effect (Backend *backend, QObject *parent, NodeDescription description);
45             virtual ~Effect ();
46 
47             virtual QList<EffectParameter> parameters() const;
48             virtual QVariant parameterValue(const EffectParameter &) const;
49             virtual void setParameterValue(const EffectParameter &, const QVariant &);
50 
51             virtual void init();
52             virtual void setupEffectParams();
53 
54         protected:
55             virtual GstElement* createEffectBin() = 0;
56 
57             void setEffectElement(GstElement *effectElement);
58 
effectElement()59             GstElement *effectElement() const {
60                 return m_effectElement;
61             }
62 
effectBin()63             GstElement *effectBin() const {
64                 return m_effectBin;
65             }
66 
67         private:
68             GstElement *m_effectBin;
69             GstElement *m_effectElement;
70             QList<Phonon::EffectParameter> m_parameterList;
71     };
72 }
73 } //namespace Phonon::Gstreamer
74 #endif //QT_NO_PHONON_EFFECT
75 
76 #endif // Phonon_GSTREAMER_EFFECT_H
77