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+/* 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 "audioeffects.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+namespace QT7
+{
+
+AudioEffectAudioNode::AudioEffectAudioNode(int effectType)
+ : AudioNode(1, 1), m_effectType(effectType)
+{
+}
+
+ComponentDescription AudioEffectAudioNode::getAudioNodeDescription() const
+{
+ ComponentDescription d;
+ d.componentType = kAudioUnitType_Effect;
+ d.componentSubType = m_effectType;
+ d.componentManufacturer = kAudioUnitManufacturer_Apple;
+ d.componentFlags = 0;
+ d.componentFlagsMask = 0;
+ return d;
+}
+
+void AudioEffectAudioNode::initializeAudioUnit()
+{
+ if (!m_audioUnit)
+ return;
+ foreach(int id, m_alteredParameters.keys()){
+ Float32 value = m_alteredParameters.value(id);
+ ComponentResult res = AudioUnitSetParameter(m_audioUnit, id, kAudioUnitScope_Global, 0, value, 0);
+ BACKEND_ASSERT2(res == noErr, "Could not initialize audio effect.", NORMAL_ERROR)
+ }
+}
+
+QVariant AudioEffectAudioNode::parameterValue(const Phonon::EffectParameter &parameter) const
+{
+ if (m_audioUnit){
+ Float32 value = 0;
+ AudioUnitGetParameter(m_audioUnit, parameter.id(), kAudioUnitScope_Global, 0, &value);
+ return QVariant(value);
+ } else if (m_alteredParameters.contains(parameter.id())){
+ return QVariant(m_alteredParameters.value(parameter.id()));
+ } else {
+ // Use default value:
+ AudioUnit tmpAudioUnit;
+ ComponentDescription description = getAudioNodeDescription();
+ Component component = FindNextComponent(0, &description);
+ BACKEND_ASSERT3(component, "Could not get parameters of audio effect.", NORMAL_ERROR, QVariant())
+ OSErr err = OpenAComponent(component, &tmpAudioUnit);
+ BACKEND_ASSERT3(err == noErr, "Could not get parameters of audio effect.", NORMAL_ERROR, QVariant())
+ AudioUnitParameterInfo info;
+ UInt32 size = sizeof(info);
+ ComponentResult res = AudioUnitGetProperty(tmpAudioUnit,
+ kAudioUnitProperty_ParameterInfo, kAudioUnitScope_Global, parameter.id(), &info, &size);
+ BACKEND_ASSERT3(res == noErr, "Could not get parameter info from audio effect.", NORMAL_ERROR, QVariant())
+ return QVariant(info.defaultValue);
+ }
+}
+
+void AudioEffectAudioNode::setParameterValue(const Phonon::EffectParameter &parameter, const QVariant &newValue)
+{
+ Float32 value = 0;
+ if (newValue.isValid()){
+ value = newValue.toDouble();
+ m_alteredParameters.insert(parameter.id(), value);
+ } else {
+ // Use default value:
+ m_alteredParameters.remove(parameter.id());
+ if (m_audioUnit){
+ AudioUnit tmpAudioUnit;
+ ComponentDescription description = getAudioNodeDescription();
+ Component component = FindNextComponent(0, &description);
+ BACKEND_ASSERT2(component, "Could not get parameters of audio effect.", NORMAL_ERROR)
+ OSErr err = OpenAComponent(component, &tmpAudioUnit);
+ BACKEND_ASSERT2(err == noErr, "Could not get parameters of audio effect.", NORMAL_ERROR)
+ AudioUnitParameterInfo info;
+ UInt32 size = sizeof(info);
+ ComponentResult res = AudioUnitGetProperty(tmpAudioUnit,
+ kAudioUnitProperty_ParameterInfo, kAudioUnitScope_Global, parameter.id(), &info, &size);
+ BACKEND_ASSERT2(res == noErr, "Could not get parameter info from audio effect.", NORMAL_ERROR)
+ value = info.defaultValue;
+ }
+ }
+
+ if (m_audioUnit){
+ ComponentResult res = AudioUnitSetParameter(m_audioUnit, parameter.id(), kAudioUnitScope_Global, 0, value, 0);
+ BACKEND_ASSERT2(res == noErr, "Could not set effect parameter value.", NORMAL_ERROR)
+ }
+}
+
+///////////////////////////////////////////////////////////////////////
+
+AudioEffect::AudioEffect(int effectType, QObject *parent)
+ : MediaNode(AudioSink | AudioSource, 0, parent)
+{
+ m_audioNode = new AudioEffectAudioNode(effectType);
+ setAudioNode(m_audioNode);
+}
+
+QList<Phonon::EffectParameter> AudioEffect::parameters() const
+{
+ QList<Phonon::EffectParameter> effectList;
+ // Create a temporary audio unit:
+ AudioUnit audioUnit;
+ ComponentDescription description = m_audioNode->getAudioNodeDescription();
+ Component component = FindNextComponent(0, &description);
+ BACKEND_ASSERT3(component, "Could not get parameters of audio effect.", NORMAL_ERROR, effectList)
+ OSErr err = OpenAComponent(component, &audioUnit);
+ BACKEND_ASSERT3(err == noErr, "Could not get parameters of audio effect.", NORMAL_ERROR, effectList)
+
+ UInt32 size = 0;
+ // Get parameter count:
+ ComponentResult res = AudioUnitGetProperty(audioUnit,
+ kAudioUnitProperty_ParameterList, kAudioUnitScope_Global, 0, 0, &size);
+ BACKEND_ASSERT3(res == noErr, "Could not get parameter count from audio effect.", NORMAL_ERROR, effectList)
+ int paramCount = size / sizeof(AudioUnitParameterID);
+
+ // Get parameters:
+ AudioUnitParameterID parameters[paramCount];
+ res = AudioUnitGetProperty(audioUnit,
+ kAudioUnitProperty_ParameterList, kAudioUnitScope_Global, 0, &parameters, &size);
+ BACKEND_ASSERT3(res == noErr, "Could not get parameter list from audio effect.", NORMAL_ERROR, effectList)
+
+ for (int i=0; i<paramCount; ++i)
+ effectList << createParameter(audioUnit, parameters[i]);
+
+ CloseComponent(audioUnit);
+ return effectList;
+}
+
+QString AudioEffect::name()
+{
+ ComponentDescription description = m_audioNode->getAudioNodeDescription();
+ Component component = FindNextComponent(0, &description);
+ BACKEND_ASSERT3(component, "Could not get audio effect name.", NORMAL_ERROR, QLatin1String("<unknown effect>"))
+
+ ComponentDescription cDesc;
+ Handle nameH = NewHandle(0);
+ GetComponentInfo(component, &cDesc, nameH, 0, 0);
+ HLock(nameH);
+ char *namePtr = *nameH;
+ int len = *namePtr++;
+ namePtr[len] = 0;
+ QString qsName = QString::fromUtf8(namePtr);
+ DisposeHandle(nameH);
+ return qsName;
+}
+
+QString AudioEffect::description()
+{
+ ComponentDescription description = m_audioNode->getAudioNodeDescription();
+ Component component = FindNextComponent(0, &description);
+ BACKEND_ASSERT3(component, "Could not get audio effect description.", NORMAL_ERROR, QLatin1String("<unknown effect>"))
+
+ ComponentDescription cDesc;
+ Handle descH = NewHandle(0);
+ GetComponentInfo(component, &cDesc, 0, descH, 0);
+ HLock(descH);
+ char *descPtr = *descH;
+ int len = *descPtr++;
+ descPtr[len] = 0;
+ QString qsDesc = QString::fromUtf8(descPtr);
+ DisposeHandle(descH);
+ return qsDesc;
+}
+
+QList<int> AudioEffect::effectList()
+{
+ QList<int> effects;
+
+ ComponentDescription d;
+ d.componentType = kAudioUnitType_Effect;
+ d.componentSubType = 0;
+ d.componentManufacturer = 0;
+ d.componentFlags = 0;
+ d.componentFlagsMask = 0;
+ Component component = FindNextComponent(0, &d);
+
+ while (component) {
+ ComponentDescription cDesc;
+ GetComponentInfo(component, &cDesc, 0, 0, 0);
+ effects << cDesc.componentSubType;
+ component = FindNextComponent(component, &d);
+ }
+ return effects;
+}
+
+Phonon::EffectParameter AudioEffect::createParameter(const AudioUnit &audioUnit, const AudioUnitParameterID &id) const
+{
+ AudioUnitParameterInfo info;
+ UInt32 size = sizeof(info);
+ ComponentResult res = AudioUnitGetProperty(audioUnit,
+ kAudioUnitProperty_ParameterInfo, kAudioUnitScope_Global, id, &info, &size);
+ BACKEND_ASSERT3(res == noErr, "Could not get parameter info from audio effect.", NORMAL_ERROR, Phonon::EffectParameter())
+
+ QString name = info.flags & kAudioUnitParameterFlag_HasCFNameString
+ ? PhononCFString::toQString(info.cfNameString) : QLatin1String("<unknown parameter>");
+
+ Phonon::EffectParameter::Hint hint;
+ switch(info.unit){
+ case (kAudioUnitParameterUnit_Indexed):
+ case (kAudioUnitParameterUnit_Seconds):
+ case (kAudioUnitParameterUnit_SampleFrames):
+ case (kAudioUnitParameterUnit_Milliseconds):
+ hint = Phonon::EffectParameter::IntegerHint;
+ break;
+ case (kAudioUnitParameterUnit_Boolean):
+ hint = Phonon::EffectParameter::ToggledHint;
+ break;
+ default:
+ hint = Phonon::EffectParameter::LogarithmicHint;
+ break;
+ }
+
+ QVariant def(info.defaultValue);
+ QVariant min(info.minValue);
+ QVariant max(info.maxValue);
+ return Phonon::EffectParameter(id, name, hint, def, min, max, QVariantList(), name);
+}
+
+QVariant AudioEffect::parameterValue(const Phonon::EffectParameter &value) const
+{
+ return m_audioNode->parameterValue(value);
+}
+
+void AudioEffect::setParameterValue(const Phonon::EffectParameter &parameter, const QVariant &newValue)
+{
+ m_audioNode->setParameterValue(parameter, newValue);
+}
+
+}} //namespace Phonon::QT7
+
+QT_END_NAMESPACE
+
+#include "moc_audioeffects.cpp"
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