/*  This file is part of the KDE project.+
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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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#ifndef PHONON_MEDIAGRAPH_H+
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#define PHONON_MEDIAGRAPH_H+
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+
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#include "backendnode.h"+
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#include <QtCore/QMultiMap>+
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+
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#include <phonon/mediasource.h>+
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+
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//#define GRAPH_DEBUG+
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+
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QT_BEGIN_NAMESPACE+
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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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        class MediaObject;+
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+
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        //in the end we should probably have no more inheritance here: everything should be in the interface of the class+
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        //could be nice to then remove all the "*this" in the code of this class+
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        class MediaGraph : public QObject+
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        {+
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        public:+
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            MediaGraph(MediaObject *mo, short index);+
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            ~MediaGraph();+
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            bool isSeekable() const;+
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            qint64 absoluteTotalTime() const;+
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            qint64 absoluteCurrentTime() const;+
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            void play();+
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            void stop();+
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            void pause();+
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            void absoluteSeek(qint64);+
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+
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            QMultiMap<QString, QString> metadata() const;+
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+
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            static QList<Filter> getAllFilters(Graph graph);+
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            QList<Filter> getAllFilters() const;+
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+
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            HRESULT loadSource(const Phonon::MediaSource &);+
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+
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            bool hasVideo() const { return m_hasVideo; }+
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            void grabNode(BackendNode *node);+
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            void grabFilter(Filter filter);+
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+
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            //connections of the nodes+
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            bool connectNodes(BackendNode *source, BackendNode *sink);+
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            bool disconnectNodes(BackendNode *source, BackendNode *sink);+
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+
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            Phonon::MediaSource mediaSource() const;+
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+
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            //before loading a source, and after its playback this will be called+
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            HRESULT cleanup();+
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            void ensureStopped();+
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+
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            short index() const;+
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+
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            Filter realSource() const;+
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+
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+
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#ifndef QT_NO_PHONON_MEDIACONTROLLER+
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            QList<qint64> titles() const;+
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            void setStopPosition(qint64 time);+
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            qint64 stopPosition() const;+
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#endif //QT_NO_PHONON_MEDIACONTROLLER+
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+
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            void switchFilters(Filter oldFilter, Filter newFilter);+
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            OAFilterState syncGetRealState() const;+
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+
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            bool isLoading() const;+
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            bool isStopping() const;+
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            HRESULT renderResult() const;+
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+
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            Graph graph() const;+
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+
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            void finishLoading(quint16 workId, HRESULT hr, Graph);+
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            void finishSeeking(quint16 workId, qint64 time);+
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+
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        private:+
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            bool isSourceFilter(const Filter &filter) const;+
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            bool isDemuxerFilter(const Filter &filter) const;+
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            bool isDecoderFilter(const Filter &filter);+
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            static QList<Filter> getFilterChain(const Filter &source, const Filter &sink);+
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+
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            HRESULT reallyFinishLoading(HRESULT, const Graph &graph);+
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+
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+
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            //utility functions+
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            void ensureSourceConnectedTo(bool force = false);+
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            void ensureSourceDisconnected();+
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            bool tryConnect(const OutputPin &, const InputPin &);+
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            bool tryDisconnect(const OutputPin &, const InputPin &);+
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            HRESULT removeFilter(const Filter& filter);+
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+
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            //after loading, removes the decoders that are not linked to a sink+
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            HRESULT removeUselessDecoders();+
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+
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            //COM objects+
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            Graph m_graph;+
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            ComPointer<IMediaControl> m_mediaControl;+
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            ComPointer<IMediaSeeking> m_mediaSeeking;+
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            Filter m_fakeSource, m_realSource;+
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            Filter m_demux;+
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            QList<OutputPin> m_decoderPins;+
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            QList<Filter> m_decoders;+
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+
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            bool m_hasVideo;+
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            bool m_hasAudio;+
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            bool m_connectionsDirty;+
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            bool m_isStopping;+
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            mutable bool m_isSeekable;+
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            HRESULT m_result;+
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            quint16 m_index;+
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            quint16 m_renderId;+
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            quint16 m_seekId;+
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+
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            //while seeking we need to store the current time+
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            qint64 m_currentTime;+
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            qint64 m_totalTime;+
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+
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            MediaObject *m_mediaObject;+
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            Phonon::MediaSource m_mediaSource;+
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            QList<BackendNode*> m_sinkConnections; //connections to the source+
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+
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            Q_DISABLE_COPY(MediaGraph);+
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        };+
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    }+
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}+
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+
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QT_END_NAMESPACE+
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+
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#endif // PHONON_MEDIAGRAPH_H+
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