src/3rdparty/phonon/gstreamer/audioeffect.cpp
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/phonon/gstreamer/audioeffect.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,78 @@
+/*  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 "common.h"
+#include "backend.h"
+#include "medianode.h"
+#include "effectmanager.h"
+#include "audioeffect.h"
+#include "gsthelper.h"
+
+#include <gst/gst.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+namespace Gstreamer
+{
+AudioEffect::AudioEffect(Backend *backend, int effectId, QObject *parent)
+        : Effect(backend, parent, AudioSource | AudioSink)
+{
+    static int count = 0;
+    m_name = "AudioEffect" + QString::number(count++);
+    QList<EffectInfo*> audioEffects = backend->effectManager()->audioEffects();
+    if (effectId >= 0 && effectId < audioEffects.size()) {
+        m_effectName = audioEffects[effectId]->name();
+        init();
+    } else {
+        Q_ASSERT(0); // Effect ID out of range
+    }
+}
+
+GstElement* AudioEffect::createEffectBin()
+{
+    GstElement *audioBin = gst_bin_new(NULL);
+
+    // We need a queue to handle tee-connections from parent node
+    GstElement *queue= gst_element_factory_make ("queue", NULL);
+    gst_bin_add(GST_BIN(audioBin), queue);
+
+    GstElement *mconv= gst_element_factory_make ("audioconvert", NULL);
+    gst_bin_add(GST_BIN(audioBin), mconv);
+
+    m_effectElement = gst_element_factory_make (qPrintable(m_effectName), NULL);
+    gst_bin_add(GST_BIN(audioBin), m_effectElement);
+
+    //Link src pad
+    GstPad *srcPad= gst_element_get_pad (m_effectElement, "src");
+    gst_element_add_pad (audioBin, gst_ghost_pad_new ("src", srcPad));
+    gst_object_unref (srcPad);
+
+    //Link sink pad
+    gst_element_link_many(queue, mconv, m_effectElement, (const char*)NULL);
+    GstPad *sinkpad = gst_element_get_pad (queue, "sink");
+    gst_element_add_pad (audioBin, gst_ghost_pad_new ("sink", sinkpad));
+    gst_object_unref (sinkpad);
+    return audioBin;
+}
+
+}
+} //namespace Phonon::Gstreamer
+
+QT_END_NAMESPACE
+#include "moc_audioeffect.cpp"