Long live Qt 4.5!

1 files changed, 181 insertions, 0 deletions

diff --git a/src/3rdparty/phonon/qt7/audiomixer.mm b/src/3rdparty/phonon/qt7/audiomixer.mm
new file mode 100644
index 0000000000..30b1e6f63d
--- /dev/null
+++ b/src/3rdparty/phonon/qt7/audiomixer.mm
@@ -0,0 +1,181 @@
+/*  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 "audiomixer.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+namespace QT7
+{
+
+AudioMixerAudioNode::AudioMixerAudioNode() : AudioNode(30, 1)
+{
+    m_numberOfBusses = 2;
+    m_volume = 1.0f;
+}
+
+ComponentDescription AudioMixerAudioNode::getAudioNodeDescription() const
+{
+	ComponentDescription description;
+	description.componentType = kAudioUnitType_Mixer;
+	description.componentSubType = kAudioUnitSubType_StereoMixer;
+	description.componentManufacturer = kAudioUnitManufacturer_Apple;
+	description.componentFlags = 0;
+	description.componentFlagsMask = 0;
+    return description;
+}
+
+void AudioMixerAudioNode::initializeAudioUnit()
+{
+    // Set bus count:
+    OSStatus err = AudioUnitSetProperty(m_audioUnit,
+        kAudioUnitProperty_BusCount, kAudioUnitScope_Input, 0, &m_numberOfBusses, sizeof(int));
+    BACKEND_ASSERT2(err == noErr, "Could not set number of busses on audio mixer node.", FATAL_ERROR)
+}
+
+void AudioMixerAudioNode::setVolume(float volume, int bus)
+{
+    if (volume < 0)
+        m_volume = 0;
+    else if (volume > 1)
+        m_volume = 1;
+    else
+        m_volume = volume;
+
+    if (m_audioUnit){
+//        Float32 db = Float32(volume);//Float32(20.0 * log10(volume)); // convert to db
+        Float32 db = Float32(volume);
+        OSStatus err = AudioUnitSetParameter(m_audioUnit, kStereoMixerParam_Volume, kAudioUnitScope_Input, bus, db, 0);
+        BACKEND_ASSERT2(err == noErr, "Could not set volume on audio mixer node.", NORMAL_ERROR)
+    }
+}
+
+float AudioMixerAudioNode::volume(int bus)
+{
+    if (!m_audioUnit)
+        return 0;
+
+    Float32 db;
+    OSStatus err = AudioUnitGetParameter(m_audioUnit, kStereoMixerParam_Volume, kAudioUnitScope_Input, bus, &db);
+    BACKEND_ASSERT3(err == noErr, "Could not get volume on audio mixer node.", NORMAL_ERROR, 0)
+    return float(db);
+}
+
+///////////////////////////////////////////////////////////////////////
+
+AudioMixer::AudioMixer(QObject *parent) : MediaNode(AudioSink | AudioSource, 0, parent)
+{
+    m_audioNode = new AudioMixerAudioNode();
+    setAudioNode(m_audioNode);
+    m_fadeCurve = Phonon::VolumeFaderEffect::Fade3Decibel;
+    m_fadeTimer = 0;
+    m_fadeDuration = 0;
+    m_fadeFromVolume = 0;
+    m_fadeToVolume = 0;
+}
+
+AudioMixer::~AudioMixer()
+{
+    if (m_fadeTimer)
+        killTimer(m_fadeTimer);
+}
+
+QList<Phonon::EffectParameter> AudioMixer::parameters() const
+{
+    QList<Phonon::EffectParameter> ret;
+    return ret;
+}
+
+QVariant AudioMixer::parameterValue(const Phonon::EffectParameter &value) const
+{
+    NOT_IMPLEMENTED;
+    Q_UNUSED(value);
+    return QVariant();
+}
+
+void AudioMixer::setParameterValue(const Phonon::EffectParameter &parameter, const QVariant &newValue)
+{
+    NOT_IMPLEMENTED;
+    Q_UNUSED(parameter);
+    Q_UNUSED(newValue);
+}
+
+float AudioMixer::volume() const
+{
+    return m_audioNode->volume(0);
+}
+
+void AudioMixer::setVolume(float volume)
+{
+    m_audioNode->setVolume(volume, 0);
+}
+
+Phonon::VolumeFaderEffect::FadeCurve AudioMixer::fadeCurve() const
+{
+    return m_fadeCurve;
+}
+
+void AudioMixer::setFadeCurve(Phonon::VolumeFaderEffect::FadeCurve fadeCurve)
+{
+    m_fadeCurve = fadeCurve;
+}
+
+void AudioMixer::fadeTo(float volume, int fadeTime)
+{
+    m_fadeToVolume = volume;
+    m_fadeDuration = fadeTime;
+    m_fadeFromVolume = m_audioNode->volume(0);
+    
+    m_fadeStartTime.start();
+    if (m_fadeTimer)
+        killTimer(m_fadeTimer);
+    m_fadeTimer = startTimer(100);
+}
+
+void AudioMixer::updateFade()
+{
+    float step = float(m_fadeStartTime.elapsed()) / float(m_fadeDuration);
+    if (step > 1){
+        step = 1;
+        if (m_fadeTimer)
+            killTimer(m_fadeTimer);
+    }
+    float volume = m_fadeFromVolume + ((m_fadeToVolume - m_fadeFromVolume) * step);
+    m_audioNode->setVolume(volume, 0);
+}
+
+bool AudioMixer::event(QEvent *event)
+{
+    switch (event->type()){
+        case QEvent::Timer:{
+            QTimerEvent *timerEvent = static_cast<QTimerEvent *>(event);
+            if (timerEvent->timerId() == m_fadeTimer)
+                updateFade();
+            break; }
+        default:
+            break;
+    }
+    return MediaNode::event(event);
+}
+
+}} //namespace Phonon::QT7
+
+QT_END_NAMESPACE
+
+#include "moc_audiomixer.cpp"