pincontrol.cpp File Reference

#include "precomp.h"

Include dependency graph for pincontrol.cpp:

Go to the source code of this file.

Classes
class	CBDAPinControl

Functions
HRESULT	GetNetworkProviderFromGraph (IFilterGraph *pGraph, IBDA_NetworkProvider **pOutNetworkProvider)
HRESULT	CBDAPinControl_RealConstructor (HANDLE hPin, IBDA_NetworkProvider *pNetworkProvider, IPin *pConnectedPin, ULONG RegistrationCtx, IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv)
HRESULT WINAPI	CBDAPinControl_fnConstructor (IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv)

Variables
const GUID	KSPROPSETID_BdaPinControl = {0x0ded49d5, 0xa8b7, 0x4d5d, {0x97, 0xa1, 0x12, 0xb0, 0xc1, 0x95, 0x87, 0x4d}}
const GUID	IID_IBDA_PinControl = {0x0DED49D5, 0xA8B7, 0x4d5d, {0x97, 0xA1, 0x12, 0xB0, 0xC1, 0x95, 0x87, 0x4D}}
const GUID	IID_IPin = {0x56a86891, 0x0ad4, 0x11ce, {0xb0, 0x3a, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}}

Function Documentation

CBDAPinControl_fnConstructor()

HRESULT WINAPI CBDAPinControl_fnConstructor	(	IUnknown *	pUnkOuter,
		REFIID	riid,
		LPVOID *	ppv
	)

Definition at line 236 of file pincontrol.cpp.

{
    IPin * pConnectedPin = NULL;
    IBDA_NetworkProvider * pNetworkProvider = NULL;
    HANDLE hFile = INVALID_HANDLE_VALUE;
    HRESULT hr;
    IKsObject * pObject = NULL;
    IPin * pPin = NULL;
    IUnknown * pUnknown = NULL;
    PIN_INFO PinInfo;
    FILTER_INFO FilterInfo;
    ULONG RegistrationCtx = 0;
 
    if (!pUnkOuter)
        return E_POINTER;
 
    OutputDebugStringW(L"CBDAPinControl_fnConstructor\n");
    //DebugBreak();
 
    // query for IKsObject interface
    hr = pUnkOuter->QueryInterface(IID_IKsObject, (void**)&pObject);
 
    if (FAILED(hr))
        return hr;
 
    // query for IPin interface
    hr = pObject->QueryInterface(IID_IPin, (void**)&pPin);
 
    if (FAILED(hr))
    {
        //clean up
       pObject->Release();
       return hr;
    }
 
    // get pin info
    hr = pPin->QueryPinInfo(&PinInfo);
 
    if (FAILED(hr))
    {
        //clean up
       pObject->Release();
       pPin->Release();
       return hr;
    }
 
    if (!PinInfo.pFilter)
    {
        //clean up
       pObject->Release();
       pPin->Release();
       return hr;
    }
 
    // sanity checks
    assert(PinInfo.pFilter != NULL);
 
    // query filter info
    hr = PinInfo.pFilter->QueryFilterInfo(&FilterInfo);
 
    // sanity check
    assert(FilterInfo.pGraph != NULL);
 
    // get network provider interface
    hr = GetNetworkProviderFromGraph(FilterInfo.pGraph, &pNetworkProvider);
 
    if (SUCCEEDED(hr))
    {
        if (PinInfo.dir == PINDIR_OUTPUT)
        {
            // get connected pin handle
            hr = pPin->ConnectedTo(&pConnectedPin);
            if (SUCCEEDED(hr))
            {
                // get file handle
                hFile = pObject->KsGetObjectHandle();
                if (hFile)
                {
                    hr = CBDAPinControl_RealConstructor(hFile, pNetworkProvider, pConnectedPin, 0, pUnkOuter, riid, ppv);
                    if (SUCCEEDED(hr))
                    {
                        // set to null to prevent releasing
                        pNetworkProvider = NULL;
                        pConnectedPin = NULL;
                    }
                }
                else
                {
                    // expected file handle
                    hr = E_UNEXPECTED;
                }
            }
        }
        else
        {
            // get IUnknown from base filter
            hr = PinInfo.pFilter->QueryInterface(IID_IUnknown, (void**)&pUnknown);
            if (SUCCEEDED(hr))
            {
                // register device filter
                OutputDebugStringW(L"CBDAPinControl_fnConstructor registering device filter with network provider\n");
                hr = pNetworkProvider->RegisterDeviceFilter(pUnknown, &RegistrationCtx);
                if (SUCCEEDED(hr))
                {
                    // get file handle
                    hFile = pObject->KsGetObjectHandle();
                    if (hFile)
                    {
                        hr = CBDAPinControl_RealConstructor(hFile, pNetworkProvider, NULL, RegistrationCtx, pUnkOuter, riid, ppv);
                        if (SUCCEEDED(hr))
                        {
                            // set to null to prevent releasing
                            pNetworkProvider = NULL;
                        }
                    }
                    else
                    {
                        // expected file handle
                        hr = E_UNEXPECTED;
                    }
                }
                else
                {
                    WCHAR Buffer[100];
                    swprintf(Buffer, L"CBDAPinControl_fnConstructor failed to register filter with %lx\n", hr);
                    OutputDebugStringW(Buffer);
                }
            }
        }
    }
 
    // release IFilterGraph interface
    FilterInfo.pGraph->Release();
 
    // release IBaseFilter interface
    PinInfo.pFilter->Release();
 
    // release IPin
    pPin->Release();
 
    // release IKsObject
    pObject->Release();
 
 
    if (pNetworkProvider)
    {
        // release network provider
        pNetworkProvider->Release();
    }
 
    if (pConnectedPin)
    {
        // release connected pin
        pConnectedPin->Release();
    }
 
    if (pUnknown)
    {
        // release filter
        pUnknown->Release();
    }
 
    return hr;
}

CBDAPinControl_RealConstructor()

HRESULT CBDAPinControl_RealConstructor	(	HANDLE	hPin,
		IBDA_NetworkProvider *	pNetworkProvider,
		IPin *	pConnectedPin,
		ULONG	RegistrationCtx,
		IUnknown *	pUnkOuter,
		REFIID	riid,
		LPVOID *	ppv
	)

Definition at line 206 of file pincontrol.cpp.

{
    CBDAPinControl * handler = new CBDAPinControl(hPin, pNetworkProvider, pConnectedPin, RegistrationCtx);
 
#ifdef BDAPLGIN_TRACE
    OutputDebugStringW(L"CBDAPinControl_fnConstructor\n");
#endif
 
    if (!handler)
        return E_OUTOFMEMORY;
 
    if (FAILED(handler->QueryInterface(riid, ppv)))
    {
        /* not supported */
        delete handler;
        return E_NOINTERFACE;
    }
 
    return NOERROR;
}

Referenced by CBDAPinControl_fnConstructor().

GetNetworkProviderFromGraph()

HRESULT GetNetworkProviderFromGraph	(	IFilterGraph *	pGraph,
		IBDA_NetworkProvider **	pOutNetworkProvider
	)

Definition at line 162 of file pincontrol.cpp.

{
    IEnumFilters *pEnumFilters = NULL;
    IBaseFilter * ppFilter[1];
    IBDA_NetworkProvider * pNetworkProvider = NULL;
    HRESULT hr;
 
    // get IEnumFilters interface
    hr = pGraph->EnumFilters(&pEnumFilters);
 
    if (FAILED(hr))
    {
        //clean up
        *pOutNetworkProvider = NULL;
        return hr;
    }
 
    while(pEnumFilters->Next(1, ppFilter, NULL) == S_OK)
    {
        // check if that filter supports the IBDA_NetworkProvider interface
        hr = ppFilter[0]->QueryInterface(IID_IBDA_NetworkProvider, (void**)&pNetworkProvider);
 
        // release IBaseFilter
        ppFilter[0]->Release();
 
        if (SUCCEEDED(hr))
            break;
    }
 
    // release IEnumFilters interface
    pEnumFilters->Release();
 
    //store result
    *pOutNetworkProvider = pNetworkProvider;
 
    if (pNetworkProvider)
        return S_OK;
    else
        return E_FAIL;
}

Referenced by CBDAPinControl_fnConstructor().

Variable Documentation

IID_IBDA_PinControl

const GUID IID_IBDA_PinControl = {0x0DED49D5, 0xA8B7, 0x4d5d, {0x97, 0xA1, 0x12, 0xB0, 0xC1, 0x95, 0x87, 0x4D}}

Definition at line 14 of file pincontrol.cpp.

Referenced by CBDAPinControl::QueryInterface().

IID_IPin

const GUID IID_IPin = {0x56a86891, 0x0ad4, 0x11ce, {0xb0, 0x3a, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}}

Definition at line 15 of file pincontrol.cpp.

Referenced by AsyncReader_QueryInterface(), AudioMediaStreamImpl_IAMMediaStream_QueryInterface(), AviMuxIn_QueryInterface(), AviMuxOut_QueryInterface(), BaseInputPinImpl_QueryInterface(), BaseOutputPinImpl_QueryInterface(), CBDAPinControl_fnConstructor(), CKsProxy::CreatePins(), DirectDrawMediaStreamImpl_IAMMediaStream_QueryInterface(), DSoundRender_QueryInterface(), FileAsyncReaderPin_QueryInterface(), fnCaptureGraphBuilder2_FindPin(), CKsInterfaceHandler::KsSetPin(), MediaStreamFilterImpl_GetPin(), MPEGSplitter_QueryInterface(), NullRendererInner_QueryInterface(), Parser_OutputPin_QueryInterface(), Parser_QueryInterface(), PullPin_QueryInterface(), CInputPin::QueryInterface(), COutputPin::QueryInterface(), CPin::QueryInterface(), SampleGrabber_IPin_QueryInterface(), test_media_streams(), TestFilter_Pin_QueryInterface(), TransformFilterImpl_QueryInterface(), VfwPin_QueryInterface(), and VideoRendererInner_QueryInterface().

KSPROPSETID_BdaPinControl

const GUID KSPROPSETID_BdaPinControl = {0x0ded49d5, 0xa8b7, 0x4d5d, {0x97, 0xa1, 0x12, 0xb0, 0xc1, 0x95, 0x87, 0x4d}}

Definition at line 13 of file pincontrol.cpp.

Referenced by CBDAPinControl::GetPinID(), and CBDAPinControl::GetPinType().