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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 "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
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);
if (hr == VFW_E_NOT_STOPPED && m_mediaObject) {
m_mediaObject->ensureStopped();
hr = info.pGraph->RemoveFilter(filter);
}
Q_ASSERT(SUCCEEDED(hr));
info.pGraph->Release();
}
}
}
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"
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