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 #include "common.h"

    19 #include "backend.h"

    20 #include "medianode.h"

    21 #include "effectmanager.h"

    22 #include "audioeffect.h"

    23 #include "gsthelper.h"

    24 

    25 #include <gst/gst.h>

    26 

    27 QT_BEGIN_NAMESPACE

    28 

    29 namespace Phonon

    30 {

    31 namespace Gstreamer

    32 {

    33 AudioEffect::AudioEffect(Backend *backend, int effectId, QObject *parent)

    34         : Effect(backend, parent, AudioSource | AudioSink)

    35 {

    36     static int count = 0;

    37     m_name = "AudioEffect" + QString::number(count++);

    38     QList<EffectInfo*> audioEffects = backend->effectManager()->audioEffects();

    39     if (effectId >= 0 && effectId < audioEffects.size()) {

    40         m_effectName = audioEffects[effectId]->name();

    41         init();

    42     } else {

    43         Q_ASSERT(0); // Effect ID out of range

    44     }

    45 }

    46 

    47 GstElement* AudioEffect::createEffectBin()

    48 {

    49     GstElement *audioBin = gst_bin_new(NULL);

    50 

    51     // We need a queue to handle tee-connections from parent node

    52     GstElement *queue= gst_element_factory_make ("queue", NULL);

    53     gst_bin_add(GST_BIN(audioBin), queue);

    54 

    55     GstElement *mconv= gst_element_factory_make ("audioconvert", NULL);

    56     gst_bin_add(GST_BIN(audioBin), mconv);

    57 

    58     m_effectElement = gst_element_factory_make (qPrintable(m_effectName), NULL);

    59     gst_bin_add(GST_BIN(audioBin), m_effectElement);

    60 

    61     //Link src pad

    62     GstPad *srcPad= gst_element_get_pad (m_effectElement, "src");

    63     gst_element_add_pad (audioBin, gst_ghost_pad_new ("src", srcPad));

    64     gst_object_unref (srcPad);

    65 

    66     //Link sink pad

    67     gst_element_link_many(queue, mconv, m_effectElement, (const char*)NULL);

    68     GstPad *sinkpad = gst_element_get_pad (queue, "sink");

    69     gst_element_add_pad (audioBin, gst_ghost_pad_new ("sink", sinkpad));

    70     gst_object_unref (sinkpad);

    71     return audioBin;

    72 }

    73 

    74 }

    75 } //namespace Phonon::Gstreamer

    76 

    77 QT_END_NAMESPACE

    78 #include "moc_audioeffect.cpp"