/*  This file is part of the KDE project.+
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+
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Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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+
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This library is free software: you can redistribute it and/or modify+
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it under the terms of the GNU Lesser General Public License as published by+
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the Free Software Foundation, either version 2.1 or 3 of the License.+
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+
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This library is distributed in the hope that it will be useful,+
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but WITHOUT ANY WARRANTY; without even the implied warranty of+
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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GNU Lesser General Public License for more details.+
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+
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You should have received a copy of the GNU Lesser General Public License+
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along with this library.  If not, see <http://www.gnu.org/licenses/>.+
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*/+
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+
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#include "effect.h"+
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#include <phonon/effectparameter.h>+
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+
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#include <medparam.h>+
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#include <dmo.h>+
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#include <dmodshow.h>+
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+
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QT_BEGIN_NAMESPACE+
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+
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#ifndef QT_NO_PHONON_EFFECT+
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+
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namespace Phonon+
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{+
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    namespace DS9+
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    {+
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        Effect::Effect(CLSID effectClass, QObject *parent)+
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            : BackendNode(parent)+
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        {+
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            //creation of the filter+
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            for(int i = 0; i < FILTER_COUNT; ++i) {+
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                Filter &filter = m_filters[i];+
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                filter = Filter(CLSID_DMOWrapperFilter, IID_IBaseFilter);+
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                Q_ASSERT(filter);+
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                ComPointer<IDMOWrapperFilter> wrapper(filter, IID_IDMOWrapperFilter);+
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                Q_ASSERT(wrapper);+
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                wrapper->Init(effectClass, DMOCATEGORY_AUDIO_EFFECT);+
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            }+
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        }+
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+
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        Effect::Effect(QObject *parent) : BackendNode(parent)+
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        {+
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            //at this point the QVector of Filter should be filled+
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        }+
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+
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        Effect::~Effect()+
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        {+
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        }+
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+
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        QList<Phonon::EffectParameter> Effect::parameters() const+
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        {+
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            QList<Phonon::EffectParameter> ret;+
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            ComPointer<IMediaParamInfo> paramInfo(m_filters[0], IID_IMediaParamInfo);+
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            if (!paramInfo) {+
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                return ret;+
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            }+
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            DWORD paramCount = 0;+
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            paramInfo->GetParamCount( &paramCount);+
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+
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            for(quint32 i = 0; i < paramCount; i++) {+
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                MP_PARAMINFO info;+
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                HRESULT hr = paramInfo->GetParamInfo(i, &info);+
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                Q_ASSERT(SUCCEEDED(hr));+
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                WCHAR *name = 0;+
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                hr = paramInfo->GetParamText(i, &name);+
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                Q_ASSERT(SUCCEEDED(hr));+
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                QVariant def, min, max;+
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+
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                QVariantList values;+
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+
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                switch(info.mpType)+
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                {+
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                case MPT_ENUM:+
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                    {+
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                        WCHAR *current = name;+
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                        current += wcslen(current) + 1; //skip the name+
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                        current += wcslen(current) + 1; //skip the unit+
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                        for(; *current; current += wcslen(current) + 1) {+
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                            values.append( QString::fromWCharArray(current) );+
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                        }+
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                    }+
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                    //FALLTHROUGH+
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                case MPT_INT:+
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                    def = int(info.mpdNeutralValue);+
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                    min = int(info.mpdMinValue);+
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                    max = int(info.mpdMaxValue);+
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                    break;+
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                case MPT_FLOAT:+
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                    def = info.mpdNeutralValue;+
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                    min = info.mpdMinValue;+
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                    max = info.mpdMaxValue;+
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                    break;+
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                case MPT_BOOL:+
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                    def = bool(info.mpdNeutralValue);+
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                    break;+
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                case MPT_MAX:+
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                    //Reserved ms-help://MS.PSDKSVR2003R2.1033/directshow/htm/mp_typeenumeration.htm+
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                    break;+
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                }+
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+
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                Phonon::EffectParameter::Hints hint = info.mopCaps == MP_CAPS_CURVE_INVSQUARE ?+
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                    Phonon::EffectParameter::LogarithmicHint : Phonon::EffectParameter::Hints(0);+
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+
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                const QString n = QString::fromWCharArray(name);+
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                ret.append(Phonon::EffectParameter(i, n, hint, def, min, max, values));+
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                ::CoTaskMemFree(name); //let's free the memory+
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            }+
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            return ret;+
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        }+
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+
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        QVariant Effect::parameterValue(const Phonon::EffectParameter &p) const+
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        {+
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            QVariant ret;+
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            ComPointer<IMediaParams> params(m_filters[0], IID_IMediaParams);+
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            Q_ASSERT(params);+
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            MP_DATA data;+
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            HRESULT hr = params->GetParam(p.id(), &data);+
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            if(SUCCEEDED(hr))+
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                return data;+
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            else+
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                return QVariant();+
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        }+
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+
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        void Effect::setParameterValue(const Phonon::EffectParameter &p, const QVariant &v)+
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        {+
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            if (v.isNull()) {+
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                return;+
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            }+
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+
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            for(int i=0; i < FILTER_COUNT ; ++i) {+
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                const Filter &filter = m_filters[i];+
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                ComPointer<IMediaParams> params(filter, IID_IMediaParams);+
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                Q_ASSERT(params);+
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+
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                params->SetParam(p.id(), v.toFloat());+
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            }+
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        }+
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+
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    }+
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}+
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+
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#endif //QT_NO_PHONON_EFFECT+
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+
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QT_END_NAMESPACE+
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+
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#include "moc_effect.cpp"+
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