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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 "effect.h"
#include <phonon/effectparameter.h>
#include <medparam.h>
#include <dmo.h>
#include <dmodshow.h>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_PHONON_EFFECT
namespace Phonon
{
namespace DS9
{
Effect::Effect(CLSID effectClass, QObject *parent)
: BackendNode(parent)
{
//creation of the filter
for(int i = 0; i < FILTER_COUNT; ++i) {
Filter &filter = m_filters[i];
filter = Filter(CLSID_DMOWrapperFilter, IID_IBaseFilter);
Q_ASSERT(filter);
ComPointer<IDMOWrapperFilter> wrapper(filter, IID_IDMOWrapperFilter);
Q_ASSERT(wrapper);
wrapper->Init(effectClass, DMOCATEGORY_AUDIO_EFFECT);
}
}
Effect::Effect(QObject *parent) : BackendNode(parent)
{
//at this point the QVector of Filter should be filled
}
Effect::~Effect()
{
}
QList<Phonon::EffectParameter> Effect::parameters() const
{
QList<Phonon::EffectParameter> ret;
ComPointer<IMediaParamInfo> paramInfo(m_filters[0], IID_IMediaParamInfo);
if (!paramInfo) {
return ret;
}
DWORD paramCount = 0;
paramInfo->GetParamCount( ¶mCount);
for(quint32 i = 0; i < paramCount; i++) {
MP_PARAMINFO info;
HRESULT hr = paramInfo->GetParamInfo(i, &info);
Q_ASSERT(SUCCEEDED(hr));
WCHAR *name = 0;
hr = paramInfo->GetParamText(i, &name);
Q_ASSERT(SUCCEEDED(hr));
QVariant def, min, max;
QVariantList values;
switch(info.mpType)
{
case MPT_ENUM:
{
WCHAR *current = name;
current += wcslen(current) + 1; //skip the name
current += wcslen(current) + 1; //skip the unit
for(; *current; current += wcslen(current) + 1) {
values.append( QString::fromUtf16((unsigned short*)current) );
}
}
//FALLTHROUGH
case MPT_INT:
def = int(info.mpdNeutralValue);
min = int(info.mpdMinValue);
max = int(info.mpdMaxValue);
break;
case MPT_FLOAT:
def = info.mpdNeutralValue;
min = info.mpdMinValue;
max = info.mpdMaxValue;
break;
case MPT_BOOL:
def = bool(info.mpdNeutralValue);
break;
case MPT_MAX:
//Reserved ms-help://MS.PSDKSVR2003R2.1033/directshow/htm/mp_typeenumeration.htm
break;
}
Phonon::EffectParameter::Hints hint = info.mopCaps == MP_CAPS_CURVE_INVSQUARE ?
Phonon::EffectParameter::LogarithmicHint : Phonon::EffectParameter::Hints(0);
const QString n = QString::fromUtf16((unsigned short*)name);
ret.append(Phonon::EffectParameter(i, n, hint, def, min, max, values));
::CoTaskMemFree(name); //let's free the memory
}
return ret;
}
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);
MP_DATA data = float(v.toDouble());
params->SetParam(p.id(), data);
}
}
}
}
#endif //QT_NO_PHONON_EFFECT
QT_END_NAMESPACE
#include "moc_effect.cpp"
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