foreach (Phonon::EffectDescription effect, effects) {
QTreeWidgetItem *item = new QTreeWidgetItem(effectsTreeWidget);
item->setText(0, tr("Effect"));
item->setText(1, effect.name());
item->setText(2, effect.description());
//! [effects]
//! [effectsParameters]
Phonon::Effect *instance = new Phonon::Effect(effect, this);
QList<Phonon::EffectParameter> parameters = instance->parameters();
for (int i = 0; i < parameters.size(); ++i) {
Phonon::EffectParameter parameter = parameters.at(i);
QVariant defaultValue = parameter.defaultValue();
QVariant minimumValue = parameter.minimumValue();
QVariant maximumValue = parameter.maximumValue();
QString valueString = QString("%1 / %2 / %3")
.arg(defaultValue.toString()).arg(minimumValue.toString())
.arg(maximumValue.toString());
QTreeWidgetItem *parameterItem = new QTreeWidgetItem(item);
parameterItem->setText(0, tr("Parameter"));
parameterItem->setText(1, parameter.name());
parameterItem->setText(2, parameter.description());
parameterItem->setText(3, QVariant::typeToName(parameter.type()));
parameterItem->setText(4, valueString);
}
}
QVariant Effect::parameterValue(const Phonon::EffectParameter &p) const
{
QVariant ret;
ComPointer<IMediaParams> params(m_filters[0], IID_IMediaParams);
Q_ASSERT(params);
MP_DATA data;
HRESULT hr = params->GetParam(p.id(), &data);
if(SUCCEEDED(hr))
return data;
else
return QVariant();
}
void Effect::setParameterValue(const Phonon::EffectParameter &p, const QVariant &v)
{
if (v.isNull()) {
return;
}
for(int i=0; i < FILTER_COUNT ; ++i) {
const Filter &filter = m_filters[i];
ComPointer<IMediaParams> params(filter, IID_IMediaParams);
Q_ASSERT(params);
params->SetParam(p.id(), v.toFloat());
}
}
QVariant Effect::parameterValue(const Phonon::EffectParameter &p) const
{
QVariant ret;
if (!m_filters.isEmpty()) {
ComPointer<IMediaParams> params(m_filters.first(), IID_IMediaParams);
Q_ASSERT(params);
MP_DATA data;
HRESULT hr = params->GetParam(p.id(), &data);
Q_ASSERT(SUCCEEDED(hr));
Q_UNUSED(hr);
ret = data;
}
return ret;
}
void Effect::setParameterValue(const Phonon::EffectParameter &p, const QVariant &v)
{
if (v.isNull()) {
return;
}
for(QVector<Filter>::iterator it = m_filters.begin(); it != m_filters.end(); ++it) {
Filter &filter = *it;
ComPointer<IMediaParams> params(filter, IID_IMediaParams);
Q_ASSERT(params);
MP_DATA data = float(v.toDouble());
params->SetParam(p.id(), data);
}
}
uint qHash(const Phonon::EffectParameter ¶m)
{
return param.id();
}