--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/phonon/ds9/backendnode.cpp	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,117 @@
+/*  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 "backendnode.h"
+#include "mediaobject.h"
+
+#include <ocidl.h> // ISpecifyPropertyPages
+#include <olectl.h> // OleCreatePropertyFrame
+
+QT_BEGIN_NAMESPACE
+
+namespace Phonon
+{
+    namespace DS9
+    {
+        // Displays a property dialog for a filter (experimental but should be put into main
+        /*static void showPropertyDialog(const Filter &filter)
+        {
+            ComPointer<ISpecifyPropertyPages> prop(filter, IID_ISpecifyPropertyPages);
+            if (prop != 0) {
+                IUnknown *iunk[] = {filter};
+                // Show the page.
+                CAUUID caGUID;
+                prop->GetPages(&caGUID);
+                OleCreatePropertyFrame(
+                    0, // Parent window
+                    0, 0,                   // (Reserved)
+                    0,                      // Caption for the dialog box
+                    1,                      // Number of objects (just the filter)
+                    iunk,                  // Array of object pointers.
+                    caGUID.cElems,          // Number of property pages
+                    caGUID.pElems,          // Array of property page CLSIDs
+                    0,                      // Locale identifier
+                    0, 0                    // Reserved
+                    );
+            }
+        }*/
+
+        //for now we have 2 graphs that do the same
+        BackendNode::BackendNode(QObject *parent) : QObject(parent), m_mediaObject(0)
+        {
+        }
+
+        BackendNode::~BackendNode()
+        {
+            //this will remove the filter from the graph
+            mediaObjectDestroyed();
+        }
+
+        void BackendNode::setMediaObject(MediaObject *mo)
+        {
+            if (m_mediaObject) {
+                disconnect(m_mediaObject, SIGNAL(destroyed()), this, SLOT(mediaObjectDestroyed()));
+            }
+            m_mediaObject = mo;
+            connect(mo, SIGNAL(destroyed()), SLOT(mediaObjectDestroyed()));
+        }
+
+        void BackendNode::mediaObjectDestroyed()
+        {
+            //remove the filter from its graph
+            FILTER_INFO info;
+            for(int i = 0; i < FILTER_COUNT; ++i) {
+                const Filter &filter = m_filters[i];
+                if (!filter)
+                    continue; 
+                filter->QueryFilterInfo(&info);
+                if (info.pGraph) {
+                    HRESULT hr = info.pGraph->RemoveFilter(filter);
+                    Q_ASSERT(SUCCEEDED(hr));
+                    Q_UNUSED(hr);
+                    info.pGraph->Release();
+                }
+            }
+            m_mediaObject = 0;
+        }
+
+        QList<InputPin> BackendNode::pins(const Filter &filter, PIN_DIRECTION wantedDirection)
+        {
+            QList<InputPin> ret;
+            if (filter) {
+                ComPointer<IEnumPins> enumPin;
+                HRESULT hr = filter->EnumPins(enumPin.pparam());
+                Q_UNUSED(hr);
+                Q_ASSERT( SUCCEEDED(hr));
+                InputPin pin;
+                while (enumPin->Next(1, pin.pparam(), 0) == S_OK) {
+                    PIN_DIRECTION dir;
+                    hr = pin->QueryDirection(&dir);
+                    Q_ASSERT( SUCCEEDED(hr));
+                    if (dir == wantedDirection) {
+                        ret.append(pin);
+                    }
+                }
+            }
+            return ret;
+        }
+    }
+}
+
+QT_END_NAMESPACE
+
+#include "moc_backendnode.cpp"