reactos/dll/directx/bdaplgin/controlnode.cpp

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS BDA Proxy
* FILE: dll/directx/bdaplgin/controlnode.cpp
* PURPOSE: ControlNode interface
*
* PROGRAMMERS: Johannes Anderwald (johannes.anderwald@reactos.org)
*/
#include "precomp.h"
#ifndef _MSC_VER
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const GUID IID_IKsPropertySet = {0x31efac30, 0x515c, 0x11d0, {0xa9,0xaa, 0x00,0xaa,0x00,0x61,0xbe,0x93}};
#endif
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class CControlNode : public IUnknown
{
public:
STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
STDMETHODIMP_(ULONG) AddRef()
{
InterlockedIncrement(&m_Ref);
return m_Ref;
}
STDMETHODIMP_(ULONG) Release()
{
InterlockedDecrement(&m_Ref);
if (!m_Ref)
{
delete this;
return 0;
}
return m_Ref;
}
CControlNode(IKsPropertySet * pProperty, ULONG NodeType, ULONG PinId) : m_Ref(0), m_pKsProperty(pProperty), m_NodeType(NodeType), m_PinId(PinId){};
virtual ~CControlNode(){};
protected:
LONG m_Ref;
IKsPropertySet * m_pKsProperty;
ULONG m_NodeType;
ULONG m_PinId;
};
HRESULT
STDMETHODCALLTYPE
CControlNode::QueryInterface(
IN REFIID refiid,
OUT PVOID* Output)
{
*Output = NULL;
if (IsEqualGUID(refiid, IID_IUnknown))
{
*Output = PVOID(this);
reinterpret_cast<IUnknown*>(*Output)->AddRef();
return NOERROR;
}
else if(IsEqualGUID(refiid, IID_IBDA_FrequencyFilter))
{
return CBDAFrequencyFilter_fnConstructor(m_pKsProperty, m_NodeType, refiid, Output);
}
else if(IsEqualGUID(refiid, IID_IBDA_SignalStatistics))
{
return CBDASignalStatistics_fnConstructor(m_pKsProperty, m_NodeType, refiid, Output);
}
else if(IsEqualGUID(refiid, IID_IBDA_LNBInfo))
{
return CBDALNBInfo_fnConstructor(m_pKsProperty, m_NodeType, refiid, Output);
}
else if(IsEqualGUID(refiid, IID_IBDA_DigitalDemodulator))
{
return CBDADigitalDemodulator_fnConstructor(m_pKsProperty, m_NodeType, refiid, Output);
}
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#ifdef BDAPLGIN_TRACE
WCHAR Buffer[MAX_PATH];
LPOLESTR lpstr;
StringFromCLSID(refiid, &lpstr);
swprintf(Buffer, L"CControlNode::QueryInterface: NoInterface for %s", lpstr);
OutputDebugStringW(Buffer);
CoTaskMemFree(lpstr);
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#endif
return E_NOINTERFACE;
}
HRESULT
WINAPI
CControlNode_fnConstructor(
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IBaseFilter * pFilter,
ULONG NodeType,
ULONG PinId,
REFIID riid,
LPVOID * ppv)
{
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WCHAR Buffer[100];
HRESULT hr;
IPin * pPin = NULL;
IKsPropertySet * pProperty;
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// store pin id
swprintf(Buffer, L"%u", PinId);
// try find target pin
hr = pFilter->FindPin(Buffer, &pPin);
if (FAILED(hr))
{
#ifdef BDAPLGIN_TRACE
swprintf(Buffer, L"CControlNode_fnConstructor failed find pin %lu with %lx\n", PinId, hr);
OutputDebugStringW(Buffer);
#endif
return hr;
}
// query for IKsPropertySet interface
hr = pPin->QueryInterface(IID_IKsPropertySet, (void**)&pProperty);
if (FAILED(hr))
return hr;
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#ifdef BDAPLGIN_TRACE
swprintf(Buffer, L"CControlNode_fnConstructor get IID_IKsObject status %lx\n", hr);
OutputDebugStringW(Buffer);
#endif
// release IPin interface
pPin->Release();
// construct device control
CControlNode * handler = new CControlNode(pProperty, NodeType, PinId);
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#ifdef BDAPLGIN_TRACE
OutputDebugStringW(L"CControlNode_fnConstructor\n");
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#endif
if (!handler)
return E_OUTOFMEMORY;
if (FAILED(handler->QueryInterface(riid, ppv)))
{
/* not supported */
delete handler;
return E_NOINTERFACE;
}
return NOERROR;
}