File indexing completed on 2024-12-01 04:21:25

 /*
     Copyright (C) 2013 Harald Sitter <sitter@kde.org>
 
     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 of the License, or (at your option) any later version.
 
     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 "equalizereffect.h"
 
 #include "mediaplayer.h"
 #include "utils/debug.h"
 
 namespace Phonon {
 namespace VLC {
 
 EqualizerEffect::EqualizerEffect(QObject *parent)
     : QObject(parent)
     , SinkNode()
     , EffectInterface()
     , m_equalizer(libvlc_audio_equalizer_new())
 {
     // Amarok decided to make up rules because phonon didn't manage to
     // pre-amp string needs to be pre-amp
     // bands need to be xxHz
     // That way they can be consistently mapped to localized/formatted strings.
 
     EffectParameter preamp(-1, "pre-amp", {} /* hint */, 0.0f, -20.0f, 20.0f);
     m_bands.append(preamp);
 
     const unsigned int bandCount = libvlc_audio_equalizer_get_band_count();
     for (unsigned int i = 0; i < bandCount; ++i) {
         const float frequency = libvlc_audio_equalizer_get_band_frequency(i);
         const QString name = QString("%1Hz").arg(QString::number(frequency));
         EffectParameter parameter(i, name, {} /* hint */, 0.0f, -20.0f, 20.0f);
         m_bands.append(parameter);
     }
 }
 
 EqualizerEffect::~EqualizerEffect()
 {
     libvlc_audio_equalizer_release(m_equalizer);
 }
 
 QList<EffectParameter> EqualizerEffect::parameters() const
 {
     return m_bands;
 }
 
 QVariant EqualizerEffect::parameterValue(const EffectParameter &parameter) const
 {
     return libvlc_audio_equalizer_get_amp_at_index(m_equalizer, parameter.id());
 }
 
 void EqualizerEffect::setParameterValue(const EffectParameter &parameter,
                                         const QVariant &newValue)
 {
     if (parameter.id() == -1)
         libvlc_audio_equalizer_set_preamp(m_equalizer, newValue.toFloat());
     else
         libvlc_audio_equalizer_set_amp_at_index(m_equalizer, newValue.toFloat(), parameter.id());
 }
 
 void EqualizerEffect::handleConnectToMediaObject(MediaObject *mediaObject)
 {
     Q_UNUSED(mediaObject);
     m_player->setEqualizer(m_equalizer);
 }
 
 } // namespace VLC
 } // namespace Phonon