input_pin.cpp

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/*
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         ReactOS WDM Streaming ActiveMovie Proxy
 * FILE:            dll/directx/ksproxy/input_pin.cpp
 * PURPOSE:         InputPin of Proxy Filter
 *
 * PROGRAMMERS:     Johannes Anderwald (janderwald@reactos.org)
 */
#include "precomp.h"

const GUID IID_IKsPinPipe = {0xe539cd90, 0xa8b4, 0x11d1, {0x81, 0x89, 0x00, 0xa0, 0xc9, 0x06, 0x28, 0x02}};
const GUID IID_IKsPinEx   = {0x7bb38260L, 0xd19c, 0x11d2, {0xb3, 0x8a, 0x00, 0xa0, 0xc9, 0x5e, 0xc2, 0x2e}};


#ifndef _MSC_VER

const GUID KSPROPSETID_Connection = {0x1D58C920L, 0xAC9B, 0x11CF, {0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00}};

KSPIN_INTERFACE StandardPinInterface = 
{
    {STATIC_KSINTERFACESETID_Standard},
    KSINTERFACE_STANDARD_STREAMING,
    0
};

KSPIN_MEDIUM StandardPinMedium =
{
    {STATIC_KSMEDIUMSETID_Standard},
    KSMEDIUM_TYPE_ANYINSTANCE,
    0
};

#else

KSPIN_INTERFACE StandardPinInterface = 
{
    STATIC_KSINTERFACESETID_Standard,
    KSINTERFACE_STANDARD_STREAMING,
    0
};

KSPIN_MEDIUM StandardPinMedium =
{
    STATIC_KSMEDIUMSETID_Standard,
    KSMEDIUM_TYPE_ANYINSTANCE,
    0
};

#endif

class CInputPin : public IPin,
                  public IKsPropertySet,
                  public IKsControl,
                  public IKsObject,
                  public IKsPinEx,
                  public IMemInputPin,
                  public IKsPinPipe,
                  public IKsPinFactory,
                  public IStreamBuilder,
                  public IKsAggregateControl,
                  public IQualityControl,
                  public ISpecifyPropertyPages
{
public:
    typedef std::vector<IUnknown *>ProxyPluginVector;

    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;
    }

    //IKsPinPipe
    HRESULT STDMETHODCALLTYPE KsGetPinFramingCache(PKSALLOCATOR_FRAMING_EX *FramingEx, PFRAMING_PROP FramingProp, FRAMING_CACHE_OPS Option);
    HRESULT STDMETHODCALLTYPE KsSetPinFramingCache(PKSALLOCATOR_FRAMING_EX FramingEx, PFRAMING_PROP FramingProp, FRAMING_CACHE_OPS Option);
    IPin* STDMETHODCALLTYPE KsGetConnectedPin();
    IKsAllocatorEx* STDMETHODCALLTYPE KsGetPipe(KSPEEKOPERATION Operation);
    HRESULT STDMETHODCALLTYPE KsSetPipe(IKsAllocatorEx *KsAllocator);
    ULONG STDMETHODCALLTYPE KsGetPipeAllocatorFlag();
    HRESULT STDMETHODCALLTYPE KsSetPipeAllocatorFlag(ULONG Flag);
    GUID STDMETHODCALLTYPE KsGetPinBusCache();
    HRESULT STDMETHODCALLTYPE KsSetPinBusCache(GUID Bus);
    PWCHAR STDMETHODCALLTYPE KsGetPinName();
    PWCHAR STDMETHODCALLTYPE KsGetFilterName();

    //IPin methods
    HRESULT STDMETHODCALLTYPE Connect(IPin *pReceivePin, const AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE ReceiveConnection(IPin *pConnector, const AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE Disconnect();
    HRESULT STDMETHODCALLTYPE ConnectedTo(IPin **pPin);
    HRESULT STDMETHODCALLTYPE ConnectionMediaType(AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE QueryPinInfo(PIN_INFO *pInfo);
    HRESULT STDMETHODCALLTYPE QueryDirection(PIN_DIRECTION *pPinDir);
    HRESULT STDMETHODCALLTYPE QueryId(LPWSTR *Id);
    HRESULT STDMETHODCALLTYPE QueryAccept(const AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE EnumMediaTypes(IEnumMediaTypes **ppEnum);
    HRESULT STDMETHODCALLTYPE QueryInternalConnections(IPin **apPin, ULONG *nPin);
    HRESULT STDMETHODCALLTYPE EndOfStream();
    HRESULT STDMETHODCALLTYPE BeginFlush();
    HRESULT STDMETHODCALLTYPE EndFlush();
    HRESULT STDMETHODCALLTYPE NewSegment(REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate);

    // ISpecifyPropertyPages
    HRESULT STDMETHODCALLTYPE GetPages(CAUUID *pPages);

    //IKsObject methods
    HANDLE STDMETHODCALLTYPE KsGetObjectHandle();

    //IKsPropertySet
    HRESULT STDMETHODCALLTYPE Set(REFGUID guidPropSet, DWORD dwPropID, LPVOID pInstanceData, DWORD cbInstanceData, LPVOID pPropData, DWORD cbPropData);
    HRESULT STDMETHODCALLTYPE Get(REFGUID guidPropSet, DWORD dwPropID, LPVOID pInstanceData, DWORD cbInstanceData, LPVOID pPropData, DWORD cbPropData, DWORD *pcbReturned);
    HRESULT STDMETHODCALLTYPE QuerySupported(REFGUID guidPropSet, DWORD dwPropID, DWORD *pTypeSupport);

    //IKsControl
    HRESULT STDMETHODCALLTYPE KsProperty(PKSPROPERTY Property, ULONG PropertyLength, LPVOID PropertyData, ULONG DataLength, ULONG* BytesReturned);
    HRESULT STDMETHODCALLTYPE KsMethod(PKSMETHOD Method, ULONG MethodLength, LPVOID MethodData, ULONG DataLength, ULONG* BytesReturned);
    HRESULT STDMETHODCALLTYPE KsEvent(PKSEVENT Event, ULONG EventLength, LPVOID EventData, ULONG DataLength, ULONG* BytesReturned);

    //IKsPin
    HRESULT STDMETHODCALLTYPE KsQueryMediums(PKSMULTIPLE_ITEM* MediumList);
    HRESULT STDMETHODCALLTYPE KsQueryInterfaces(PKSMULTIPLE_ITEM* InterfaceList);
    HRESULT STDMETHODCALLTYPE KsCreateSinkPinHandle(KSPIN_INTERFACE& Interface, KSPIN_MEDIUM& Medium);
    HRESULT STDMETHODCALLTYPE KsGetCurrentCommunication(KSPIN_COMMUNICATION *Communication, KSPIN_INTERFACE *Interface, KSPIN_MEDIUM *Medium);
    HRESULT STDMETHODCALLTYPE KsPropagateAcquire();
    HRESULT STDMETHODCALLTYPE KsDeliver(IMediaSample* Sample, ULONG Flags);
    HRESULT STDMETHODCALLTYPE KsMediaSamplesCompleted(PKSSTREAM_SEGMENT StreamSegment);
    IMemAllocator * STDMETHODCALLTYPE KsPeekAllocator(KSPEEKOPERATION Operation);
    HRESULT STDMETHODCALLTYPE KsReceiveAllocator(IMemAllocator *MemAllocator);
    HRESULT STDMETHODCALLTYPE KsRenegotiateAllocator();
    LONG STDMETHODCALLTYPE KsIncrementPendingIoCount();
    LONG STDMETHODCALLTYPE KsDecrementPendingIoCount();
    HRESULT STDMETHODCALLTYPE KsQualityNotify(ULONG Proportion, REFERENCE_TIME TimeDelta);
    // IKsPinEx
    VOID STDMETHODCALLTYPE KsNotifyError(IMediaSample* Sample, HRESULT hr);

    //IMemInputPin
    HRESULT STDMETHODCALLTYPE GetAllocator(IMemAllocator **ppAllocator);
    HRESULT STDMETHODCALLTYPE NotifyAllocator(IMemAllocator *pAllocator, BOOL bReadOnly);
    HRESULT STDMETHODCALLTYPE GetAllocatorRequirements(ALLOCATOR_PROPERTIES *pProps);
    HRESULT STDMETHODCALLTYPE Receive(IMediaSample *pSample);
    HRESULT STDMETHODCALLTYPE ReceiveMultiple(IMediaSample **pSamples, long nSamples, long *nSamplesProcessed);
    HRESULT STDMETHODCALLTYPE ReceiveCanBlock( void);

    //IKsPinFactory
    HRESULT STDMETHODCALLTYPE KsPinFactory(ULONG* PinFactory);

    //IStreamBuilder
    HRESULT STDMETHODCALLTYPE Render(IPin *ppinOut, IGraphBuilder *pGraph);
    HRESULT STDMETHODCALLTYPE Backout(IPin *ppinOut, IGraphBuilder *pGraph);

    //IKsAggregateControl
    HRESULT STDMETHODCALLTYPE KsAddAggregate(IN REFGUID AggregateClass);
    HRESULT STDMETHODCALLTYPE KsRemoveAggregate(REFGUID AggregateClass);

    //IQualityControl
    HRESULT STDMETHODCALLTYPE Notify(IBaseFilter *pSelf, Quality q);
    HRESULT STDMETHODCALLTYPE SetSink(IQualityControl *piqc);

    //---------------------------------------------------------------
    HRESULT STDMETHODCALLTYPE CheckFormat(const AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE CreatePin(const AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE CreatePinHandle(PKSPIN_MEDIUM Medium, PKSPIN_INTERFACE Interface, const AM_MEDIA_TYPE *pmt);
    HRESULT STDMETHODCALLTYPE GetSupportedSets(LPGUID * pOutGuid, PULONG NumGuids);
    HRESULT STDMETHODCALLTYPE LoadProxyPlugins(LPGUID pGuids, ULONG NumGuids);
    CInputPin(IBaseFilter * ParentFilter, LPCWSTR PinName, ULONG PinId, KSPIN_COMMUNICATION Communication);
    virtual ~CInputPin(){};

protected:
    LONG m_Ref;
    IBaseFilter * m_ParentFilter;
    LPCWSTR m_PinName;
    HANDLE m_hPin;
    ULONG m_PinId;
    IMemAllocator * m_MemAllocator;
    LONG m_IoCount;
    KSPIN_COMMUNICATION m_Communication;
    KSPIN_INTERFACE m_Interface;
    KSPIN_MEDIUM m_Medium;
    AM_MEDIA_TYPE m_MediaFormat;
    IPin * m_Pin;
    BOOL m_ReadOnly;
    IKsInterfaceHandler * m_InterfaceHandler;
    IKsAllocatorEx * m_KsAllocatorEx;
    ULONG m_PipeAllocatorFlag;
    BOOL m_bPinBusCacheInitialized;
    GUID m_PinBusCache;
    LPWSTR m_FilterName;
    FRAMING_PROP m_FramingProp[4];
    PKSALLOCATOR_FRAMING_EX m_FramingEx[4];
    ProxyPluginVector m_Plugins;
};

CInputPin::CInputPin(
    IBaseFilter * ParentFilter,
    LPCWSTR PinName,
    ULONG PinId,
    KSPIN_COMMUNICATION Communication) : m_Ref(0),
                                         m_ParentFilter(ParentFilter),
                                         m_PinName(PinName),
                                         m_hPin(INVALID_HANDLE_VALUE),
                                         m_PinId(PinId),
                                         m_MemAllocator(0),
                                         m_IoCount(0),
                                         m_Communication(Communication),
                                         m_Pin(0),
                                         m_ReadOnly(0),
                                         m_InterfaceHandler(0),
                                         m_KsAllocatorEx(0),
                                         m_PipeAllocatorFlag(0),
                                         m_bPinBusCacheInitialized(0),
                                         m_FilterName(0),
                                         m_Plugins()
{
    ZeroMemory(m_FramingProp, sizeof(m_FramingProp));
    ZeroMemory(m_FramingEx, sizeof(m_FramingEx));

    HRESULT hr;
    IKsObject * KsObjectParent;
    HANDLE hFilter;

    hr = m_ParentFilter->QueryInterface(IID_IKsObject, (LPVOID*)&KsObjectParent);
    assert(hr == S_OK);

    hFilter = KsObjectParent->KsGetObjectHandle();
    assert(hFilter);

    KsObjectParent->Release();


    ZeroMemory(&m_MediaFormat, sizeof(AM_MEDIA_TYPE));
    hr = KsGetMediaType(0, &m_MediaFormat, hFilter, m_PinId);
    assert(hr == S_OK);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::QueryInterface(
    IN  REFIID refiid,
    OUT PVOID* Output)
{
    WCHAR Buffer[100];

    *Output = NULL;

    if (IsEqualGUID(refiid, IID_IUnknown) ||
        IsEqualGUID(refiid, IID_IPin))
    {
        *Output = PVOID(this);
        reinterpret_cast<IUnknown*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IMemInputPin))
    {
        if (m_hPin == INVALID_HANDLE_VALUE)
        {
            HRESULT hr = CreatePin(&m_MediaFormat);
            if (FAILED(hr))
                return hr;
        }

        *Output = (IMemInputPin*)(this);
        reinterpret_cast<IMemInputPin*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IKsObject))
    {
        *Output = (IKsObject*)(this);
        reinterpret_cast<IKsObject*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IKsPropertySet))
    {
        if (m_hPin == INVALID_HANDLE_VALUE)
        {
            HRESULT hr = CreatePin(&m_MediaFormat);
            if (FAILED(hr))
                return hr;
        }

        *Output = (IKsPropertySet*)(this);
        reinterpret_cast<IKsPropertySet*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IKsControl))
    {
        *Output = (IKsControl*)(this);
        reinterpret_cast<IKsControl*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IKsPin) ||
             IsEqualGUID(refiid, IID_IKsPinEx))
    {
        *Output = (IKsPinEx*)(this);
        reinterpret_cast<IKsPinEx*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IKsPinPipe))
    {
        *Output = (IKsPinPipe*)(this);
        reinterpret_cast<IKsPinPipe*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IKsPinFactory))
    {
        *Output = (IKsPinFactory*)(this);
        reinterpret_cast<IKsPinFactory*>(*Output)->AddRef();
        return NOERROR;
    }
#if 0
    else if (IsEqualGUID(refiid, IID_IStreamBuilder))
    {
        *Output = (IStreamBuilder*)(this);
        reinterpret_cast<IStreamBuilder*>(*Output)->AddRef();
        return NOERROR;
    }
#endif
    else if (IsEqualGUID(refiid, IID_IKsAggregateControl))
    {
        *Output = (IKsAggregateControl*)(this);
        reinterpret_cast<IKsAggregateControl*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_IQualityControl))
    {
        *Output = (IQualityControl*)(this);
        reinterpret_cast<IQualityControl*>(*Output)->AddRef();
        return NOERROR;
    }
    else if (IsEqualGUID(refiid, IID_ISpecifyPropertyPages))
    {
        *Output = (ISpecifyPropertyPages*)(this);
        reinterpret_cast<ISpecifyPropertyPages*>(*Output)->AddRef();
        return NOERROR;
    }

    LPOLESTR lpstr;
    StringFromCLSID(refiid, &lpstr);
    swprintf(Buffer, L"CInputPin::QueryInterface: NoInterface for %s\n", lpstr);
    OutputDebugStringW(Buffer);
    CoTaskMemFree(lpstr);

    return E_NOINTERFACE;
}
//-------------------------------------------------------------------
// IQualityControl interface
//
HRESULT
STDMETHODCALLTYPE
CInputPin::Notify(
    IBaseFilter *pSelf,
    Quality q)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::Notify NotImplemented\n");
#endif

    return E_NOTIMPL;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::SetSink(
    IQualityControl *piqc)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::SetSink NotImplemented\n");
#endif

    return E_NOTIMPL;
}


//-------------------------------------------------------------------
// IKsAggregateControl interface
//
HRESULT
STDMETHODCALLTYPE
CInputPin::KsAddAggregate(
    IN REFGUID AggregateClass)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::KsAddAggregate NotImplemented\n");
#endif

    return E_NOTIMPL;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsRemoveAggregate(
    REFGUID AggregateClass)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::KsRemoveAggregate NotImplemented\n");
#endif

    return E_NOTIMPL;
}

//-------------------------------------------------------------------
// IStreamBuilder
//

HRESULT
STDMETHODCALLTYPE
CInputPin::Render(
    IPin *ppinOut,
    IGraphBuilder *pGraph)
{
    OutputDebugStringW(L"CInputPin::Render\n");
    return S_OK;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::Backout(
    IPin *ppinOut, 
    IGraphBuilder *pGraph)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::Backout\n");
#endif

    return S_OK;
}

//-------------------------------------------------------------------
// IKsPinFactory
//

HRESULT
STDMETHODCALLTYPE
CInputPin::KsPinFactory(
    ULONG* PinFactory)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::KsPinFactory\n");
#endif

    *PinFactory = m_PinId;
    return S_OK;
}

//-------------------------------------------------------------------
// IKsPinPipe
//

HRESULT
STDMETHODCALLTYPE
CInputPin::KsGetPinFramingCache(
    PKSALLOCATOR_FRAMING_EX *FramingEx,
    PFRAMING_PROP FramingProp,
    FRAMING_CACHE_OPS Option)
{
    if (Option > Framing_Cache_Write || Option < Framing_Cache_ReadLast)
    {
        // invalid argument
        return E_INVALIDARG;
    }

    // get framing properties
    *FramingProp = m_FramingProp[Option];
    *FramingEx = m_FramingEx[Option];

    return NOERROR;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsSetPinFramingCache(
    PKSALLOCATOR_FRAMING_EX FramingEx,
    PFRAMING_PROP FramingProp,
    FRAMING_CACHE_OPS Option)
{
    ULONG Index;
    ULONG RefCount = 0;

    if (m_FramingEx[Option])
    {
        for(Index = 1; Index < 4; Index++)
        {
            if (m_FramingEx[Index] == m_FramingEx[Option])
                RefCount++;
        }

        if (RefCount == 1)
        {
            // existing framing is only used once
            CoTaskMemFree(m_FramingEx[Option]);
        }
    }

    // store framing
    m_FramingEx[Option] = FramingEx;
    m_FramingProp[Option] = *FramingProp;

    return S_OK;
}

IPin*
STDMETHODCALLTYPE
CInputPin::KsGetConnectedPin()
{
    return m_Pin;
}

IKsAllocatorEx*
STDMETHODCALLTYPE
CInputPin::KsGetPipe(
    KSPEEKOPERATION Operation)
{
    if (Operation == KsPeekOperation_AddRef)
    {
        if (m_KsAllocatorEx)
            m_KsAllocatorEx->AddRef();
    }
    return m_KsAllocatorEx;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsSetPipe(
    IKsAllocatorEx *KsAllocator)
{
    if (KsAllocator)
        KsAllocator->AddRef();

    if (m_KsAllocatorEx)
        m_KsAllocatorEx->Release();

    m_KsAllocatorEx = KsAllocator;
    return NOERROR;
}

ULONG
STDMETHODCALLTYPE
CInputPin::KsGetPipeAllocatorFlag()
{
    return m_PipeAllocatorFlag;
}


HRESULT
STDMETHODCALLTYPE
CInputPin::KsSetPipeAllocatorFlag(
    ULONG Flag)
{
    m_PipeAllocatorFlag = Flag;
    return NOERROR;
}

GUID
STDMETHODCALLTYPE
CInputPin::KsGetPinBusCache()
{
    if (!m_bPinBusCacheInitialized)
    {
        CopyMemory(&m_PinBusCache, &m_Medium.Set, sizeof(GUID));
        m_bPinBusCacheInitialized = TRUE;
    }

    return m_PinBusCache;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsSetPinBusCache(
    GUID Bus)
{
    CopyMemory(&m_PinBusCache, &Bus, sizeof(GUID));
    return NOERROR;
}

PWCHAR
STDMETHODCALLTYPE
CInputPin::KsGetPinName()
{
    return (PWCHAR)m_PinName;
}


PWCHAR
STDMETHODCALLTYPE
CInputPin::KsGetFilterName()
{
    return m_FilterName;
}

//-------------------------------------------------------------------
// ISpecifyPropertyPages
//

HRESULT
STDMETHODCALLTYPE
CInputPin::GetPages(CAUUID *pPages)
{
    if (!pPages)
        return E_POINTER;

    pPages->cElems = 0;
    pPages->pElems = NULL;

    return S_OK;
}

//-------------------------------------------------------------------
// IMemInputPin
//


HRESULT
STDMETHODCALLTYPE
CInputPin::GetAllocator(IMemAllocator **ppAllocator)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::GetAllocator\n");
#endif

    return VFW_E_NO_ALLOCATOR;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::NotifyAllocator(IMemAllocator *pAllocator, BOOL bReadOnly)
{
    HRESULT hr;
    ALLOCATOR_PROPERTIES Properties;

    hr = pAllocator->GetProperties(&Properties);

#ifdef KSPROXY_TRACE
    WCHAR Buffer[100];
    swprintf(Buffer, L"CInputPin::NotifyAllocator hr %lx bReadOnly, %u cbAlign %u cbBuffer %u cbPrefix %u cBuffers %u\n", hr, bReadOnly, Properties.cbAlign, Properties.cbBuffer, Properties.cbPrefix, Properties.cBuffers);
    OutputDebugStringW(Buffer);
#endif

    if (pAllocator)
    {
        pAllocator->AddRef();
    }

    if (m_MemAllocator)
    {
        m_MemAllocator->Release();
    }

    m_MemAllocator = pAllocator;
    m_ReadOnly = bReadOnly;
    return NOERROR;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::GetAllocatorRequirements(ALLOCATOR_PROPERTIES *pProps)
{
    KSALLOCATOR_FRAMING Framing;
    KSPROPERTY Property;
    HRESULT hr;
    ULONG BytesReturned;

    Property.Set = KSPROPSETID_Connection;
    Property.Id = KSPROPERTY_CONNECTION_ALLOCATORFRAMING;
    Property.Flags = KSPROPERTY_TYPE_SET;

    hr = KsProperty(&Property, sizeof(KSPROPERTY), (PVOID)&Framing, sizeof(KSALLOCATOR_FRAMING), &BytesReturned);
    if (SUCCEEDED(hr))
    {
        pProps->cBuffers = Framing.Frames;
        pProps->cbBuffer = Framing.FrameSize;
        pProps->cbAlign = Framing.FileAlignment;
        pProps->cbPrefix = 0;
    }
    else
        hr = E_NOTIMPL;

#ifdef KSPROXY_TRACE
    WCHAR Buffer[100];
    swprintf(Buffer, L"CInputPin::GetAllocatorRequirements hr %lx m_hPin %p cBuffers %u cbBuffer %u cbAlign %u cbPrefix %u\n", hr, m_hPin, pProps->cBuffers, pProps->cbBuffer, pProps->cbAlign, pProps->cbPrefix);
    OutputDebugStringW(Buffer);
#endif

    return hr;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::Receive(IMediaSample *pSample)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::Receive NotImplemented\n");
#endif

    return E_NOTIMPL;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::ReceiveMultiple(IMediaSample **pSamples, long nSamples, long *nSamplesProcessed)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::ReceiveMultiple NotImplemented\n");
#endif

    return E_NOTIMPL;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::ReceiveCanBlock( void)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::ReceiveCanBlock NotImplemented\n");
#endif

    return S_FALSE;
}

//-------------------------------------------------------------------
// IKsPin
//

HRESULT
STDMETHODCALLTYPE
CInputPin::KsQueryMediums(
    PKSMULTIPLE_ITEM* MediumList)
{
    HRESULT hr;
    IKsObject * KsObjectParent;
    HANDLE hFilter;

    hr = m_ParentFilter->QueryInterface(IID_IKsObject, (LPVOID*)&KsObjectParent);
    if (FAILED(hr))
        return hr;

    hFilter = KsObjectParent->KsGetObjectHandle();

    KsObjectParent->Release();

    if (!hFilter)
        return E_HANDLE;

    return KsGetMultiplePinFactoryItems(hFilter, m_PinId, KSPROPERTY_PIN_MEDIUMS, (PVOID*)MediumList);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsQueryInterfaces(
    PKSMULTIPLE_ITEM* InterfaceList)
{
    HRESULT hr;
    IKsObject * KsObjectParent;
    HANDLE hFilter;

    hr = m_ParentFilter->QueryInterface(IID_IKsObject, (LPVOID*)&KsObjectParent);
    if (FAILED(hr))
        return hr;

    hFilter = KsObjectParent->KsGetObjectHandle();

    KsObjectParent->Release();

    if (!hFilter)
        return E_HANDLE;

    return KsGetMultiplePinFactoryItems(hFilter, m_PinId, KSPROPERTY_PIN_INTERFACES, (PVOID*)InterfaceList);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsCreateSinkPinHandle(
    KSPIN_INTERFACE& Interface,
    KSPIN_MEDIUM& Medium)
{
    return CreatePin(&m_MediaFormat);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsGetCurrentCommunication(
    KSPIN_COMMUNICATION *Communication,
    KSPIN_INTERFACE *Interface,
    KSPIN_MEDIUM *Medium)
{
    if (Communication)
    {
        *Communication = m_Communication;
    }

    if (Interface)
    {
        if (!m_hPin)
            return VFW_E_NOT_CONNECTED;

        CopyMemory(Interface, &m_Interface, sizeof(KSPIN_INTERFACE));
    }

    if (Medium)
    {
        if (!m_hPin)
            return VFW_E_NOT_CONNECTED;

        CopyMemory(Medium, &m_Medium, sizeof(KSPIN_MEDIUM));
    }
    return NOERROR;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsPropagateAcquire()
{
    KSPROPERTY Property;
    KSSTATE State;
    ULONG BytesReturned;
    HRESULT hr;

    assert(m_hPin != INVALID_HANDLE_VALUE);

    Property.Set = KSPROPSETID_Connection;
    Property.Id = KSPROPERTY_CONNECTION_STATE;
    Property.Flags = KSPROPERTY_TYPE_SET;

    State = KSSTATE_ACQUIRE;

    hr = KsProperty(&Property, sizeof(KSPROPERTY), (LPVOID)&State, sizeof(KSSTATE), &BytesReturned);

    //TODO
    //propagate to connected pin on the pipe

    return hr;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsDeliver(
    IMediaSample* Sample,
    ULONG Flags)
{
    return E_FAIL;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsMediaSamplesCompleted(PKSSTREAM_SEGMENT StreamSegment)
{
    return NOERROR;
}

IMemAllocator * 
STDMETHODCALLTYPE
CInputPin::KsPeekAllocator(KSPEEKOPERATION Operation)
{
    if (Operation == KsPeekOperation_AddRef)
    {
        // add reference on allocator
        m_MemAllocator->AddRef();
    }

    return m_MemAllocator;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsReceiveAllocator(IMemAllocator *MemAllocator)
{

    if (MemAllocator)
    {
        MemAllocator->AddRef();
    }

    if (m_MemAllocator)
    {
        m_MemAllocator->Release();
    }

    m_MemAllocator = MemAllocator;
    return NOERROR;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsRenegotiateAllocator()
{
    return E_FAIL;
}

LONG
STDMETHODCALLTYPE
CInputPin::KsIncrementPendingIoCount()
{
    return InterlockedIncrement((volatile LONG*)&m_IoCount);
}

LONG
STDMETHODCALLTYPE
CInputPin::KsDecrementPendingIoCount()
{
    return InterlockedDecrement((volatile LONG*)&m_IoCount);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsQualityNotify(
    ULONG Proportion,
    REFERENCE_TIME TimeDelta)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::KsQualityNotify NotImplemented\n");
#endif

    return E_NOTIMPL;
}

//-------------------------------------------------------------------
// IKsPinEx
//

VOID
STDMETHODCALLTYPE
CInputPin::KsNotifyError(
    IMediaSample* Sample,
    HRESULT hr)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::KsNotifyError NotImplemented\n");
#endif
}


//-------------------------------------------------------------------
// IKsControl
//
HRESULT
STDMETHODCALLTYPE
CInputPin::KsProperty(
    PKSPROPERTY Property,
    ULONG PropertyLength,
    LPVOID PropertyData,
    ULONG DataLength,
    ULONG* BytesReturned)
{
    assert(m_hPin != INVALID_HANDLE_VALUE);
    return KsSynchronousDeviceControl(m_hPin, IOCTL_KS_PROPERTY, (PVOID)Property, PropertyLength, (PVOID)PropertyData, DataLength, BytesReturned);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsMethod(
    PKSMETHOD Method,
    ULONG MethodLength,
    LPVOID MethodData,
    ULONG DataLength,
    ULONG* BytesReturned)
{
    assert(m_hPin != INVALID_HANDLE_VALUE);
    return KsSynchronousDeviceControl(m_hPin, IOCTL_KS_METHOD, (PVOID)Method, MethodLength, (PVOID)MethodData, DataLength, BytesReturned);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::KsEvent(
    PKSEVENT Event,
    ULONG EventLength,
    LPVOID EventData,
    ULONG DataLength,
    ULONG* BytesReturned)
{
    assert(m_hPin != INVALID_HANDLE_VALUE);

    if (EventLength)
        return KsSynchronousDeviceControl(m_hPin, IOCTL_KS_ENABLE_EVENT, (PVOID)Event, EventLength, (PVOID)EventData, DataLength, BytesReturned);
    else
        return KsSynchronousDeviceControl(m_hPin, IOCTL_KS_DISABLE_EVENT, (PVOID)Event, EventLength, NULL, 0, BytesReturned);
}


//-------------------------------------------------------------------
// IKsPropertySet
//
HRESULT
STDMETHODCALLTYPE
CInputPin::Set(
    REFGUID guidPropSet,
    DWORD dwPropID,
    LPVOID pInstanceData,
    DWORD cbInstanceData,
    LPVOID pPropData,
    DWORD cbPropData)
{
    ULONG BytesReturned;

    if (cbInstanceData)
    {
        PKSPROPERTY Property = (PKSPROPERTY)CoTaskMemAlloc(sizeof(KSPROPERTY) + cbInstanceData);
        if (!Property)
            return E_OUTOFMEMORY;

        Property->Set = guidPropSet;
        Property->Id = dwPropID;
        Property->Flags = KSPROPERTY_TYPE_SET;

        CopyMemory((Property+1), pInstanceData, cbInstanceData);

        HRESULT hr = KsProperty(Property, sizeof(KSPROPERTY) + cbInstanceData, pPropData, cbPropData, &BytesReturned);
        CoTaskMemFree(Property);
        return hr;
    }
    else
    {
        KSPROPERTY Property;

        Property.Set = guidPropSet;
        Property.Id = dwPropID;
        Property.Flags = KSPROPERTY_TYPE_SET;

        HRESULT hr = KsProperty(&Property, sizeof(KSPROPERTY), pPropData, cbPropData, &BytesReturned);
        return hr;
    }
}

HRESULT
STDMETHODCALLTYPE
CInputPin::Get(
    REFGUID guidPropSet,
    DWORD dwPropID,
    LPVOID pInstanceData,
    DWORD cbInstanceData,
    LPVOID pPropData,
    DWORD cbPropData,
    DWORD *pcbReturned)
{
    ULONG BytesReturned;

    if (cbInstanceData)
    {
        PKSPROPERTY Property = (PKSPROPERTY)CoTaskMemAlloc(sizeof(KSPROPERTY) + cbInstanceData);
        if (!Property)
            return E_OUTOFMEMORY;

        Property->Set = guidPropSet;
        Property->Id = dwPropID;
        Property->Flags = KSPROPERTY_TYPE_GET;

        CopyMemory((Property+1), pInstanceData, cbInstanceData);

        HRESULT hr = KsProperty(Property, sizeof(KSPROPERTY) + cbInstanceData, pPropData, cbPropData, &BytesReturned);
        CoTaskMemFree(Property);
        return hr;
    }
    else
    {
        KSPROPERTY Property;

        Property.Set = guidPropSet;
        Property.Id = dwPropID;
        Property.Flags = KSPROPERTY_TYPE_GET;

        HRESULT hr = KsProperty(&Property, sizeof(KSPROPERTY), pPropData, cbPropData, &BytesReturned);
        return hr;
    }
}

HRESULT
STDMETHODCALLTYPE
CInputPin::QuerySupported(
    REFGUID guidPropSet,
    DWORD dwPropID,
    DWORD *pTypeSupport)
{
    KSPROPERTY Property;
    ULONG BytesReturned;

    Property.Set = guidPropSet;
    Property.Id = dwPropID;
    Property.Flags = KSPROPERTY_TYPE_SETSUPPORT;

    return KsProperty(&Property, sizeof(KSPROPERTY), pTypeSupport, sizeof(DWORD), &BytesReturned);
}


//-------------------------------------------------------------------
// IKsObject
//
HANDLE
STDMETHODCALLTYPE
CInputPin::KsGetObjectHandle()
{
    assert(m_hPin);
    return m_hPin;
}

//-------------------------------------------------------------------
// IPin interface
//
HRESULT
STDMETHODCALLTYPE
CInputPin::Connect(IPin *pReceivePin, const AM_MEDIA_TYPE *pmt)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::Connect NotImplemented\n");
#endif
    return NOERROR;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::ReceiveConnection(IPin *pConnector, const AM_MEDIA_TYPE *pmt)
{
    HRESULT hr;

    if (m_Pin)
    {
        // already connected
        return VFW_E_ALREADY_CONNECTED;
    }

    // first check format
    hr = CheckFormat(pmt);
    if (FAILED(hr))
    {
        // format is not supported
        return hr;
    }

    hr = CreatePin(pmt);
    if (FAILED(hr))
    {
        return hr;
    }

    m_Pin = pConnector;
    m_Pin->AddRef();

    return S_OK;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::Disconnect( void)
{
    if (!m_Pin)
    {
        // pin was not connected
        return S_FALSE;
    }

    //FIXME
    //check if filter is active

    m_Pin->Release();
    m_Pin = NULL;

#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::Disconnect\n");
#endif

    return S_OK;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::ConnectedTo(IPin **pPin)
{
    if (!pPin)
        return E_POINTER;

    if (m_Pin)
    {
        // increment reference count
        m_Pin->AddRef();
        *pPin = m_Pin;
        return S_OK;
    }

    *pPin = NULL;
    return VFW_E_NOT_CONNECTED;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::ConnectionMediaType(AM_MEDIA_TYPE *pmt)
{
    if (!m_Pin)
        return VFW_E_NOT_CONNECTED;

#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::ConnectionMediaType NotImplemented\n");
#endif

    return E_NOTIMPL;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::QueryPinInfo(PIN_INFO *pInfo)
{
    wcscpy(pInfo->achName, m_PinName);
    pInfo->dir = PINDIR_INPUT;
    pInfo->pFilter = m_ParentFilter;
    m_ParentFilter->AddRef();

    return S_OK;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::QueryDirection(PIN_DIRECTION *pPinDir)
{
    if (pPinDir)
    {
        *pPinDir = PINDIR_INPUT;
        return S_OK;
    }

    return E_POINTER;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::QueryId(LPWSTR *Id)
{
    *Id = (LPWSTR)CoTaskMemAlloc((wcslen(m_PinName)+1)*sizeof(WCHAR));
    if (!*Id)
        return E_OUTOFMEMORY;

    wcscpy(*Id, m_PinName);
    return S_OK;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::QueryAccept(
    const AM_MEDIA_TYPE *pmt)
{
    return CheckFormat(pmt);
}
HRESULT
STDMETHODCALLTYPE
CInputPin::EnumMediaTypes(IEnumMediaTypes **ppEnum)
{
    HRESULT hr;
    ULONG MediaTypeCount = 0, Index;
    AM_MEDIA_TYPE * MediaTypes;
    IKsObject * KsObjectParent;
    HANDLE hFilter;

    hr = m_ParentFilter->QueryInterface(IID_IKsObject, (LPVOID*)&KsObjectParent);
    if (FAILED(hr))
        return hr;

    hFilter = KsObjectParent->KsGetObjectHandle();

    KsObjectParent->Release();

    if (!hFilter)
        return E_HANDLE;


    // query media type count
    hr = KsGetMediaTypeCount(hFilter, m_PinId, &MediaTypeCount);
    if (FAILED(hr) || !MediaTypeCount)
        return hr;

    // allocate media types
    MediaTypes = (AM_MEDIA_TYPE*)CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE) * MediaTypeCount);
    if (!MediaTypes)
    {
        // not enough memory
        return E_OUTOFMEMORY;
    }

    // zero media types
    ZeroMemory(MediaTypes, sizeof(AM_MEDIA_TYPE) * MediaTypeCount);

    for(Index = 0; Index < MediaTypeCount; Index++)
    {
        // get media type
        hr = KsGetMediaType(Index, &MediaTypes[Index], hFilter, m_PinId);
        if (FAILED(hr))
        {
            // failed
            CoTaskMemFree(MediaTypes);
            return hr;
        }
    }

    return CEnumMediaTypes_fnConstructor(MediaTypeCount, MediaTypes, IID_IEnumMediaTypes, (void**)ppEnum);
}

HRESULT
STDMETHODCALLTYPE
CInputPin::QueryInternalConnections(IPin **apPin, ULONG *nPin)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::QueryInternalConnections NotImplemented\n");
#endif
    return E_NOTIMPL;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::EndOfStream( void)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::EndOfStream NotImplemented\n");
#endif
    return E_NOTIMPL;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::BeginFlush( void)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::BeginFlush NotImplemented\n");
#endif
    return E_NOTIMPL;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::EndFlush( void)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::EndFlush NotImplemented\n");
#endif
    return E_NOTIMPL;
}
HRESULT
STDMETHODCALLTYPE
CInputPin::NewSegment(REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
{
#ifdef KSPROXY_TRACE
    OutputDebugStringW(L"CInputPin::NewSegment NotImplemented\n");
#endif
    return E_NOTIMPL;
}


//-------------------------------------------------------------------
HRESULT
STDMETHODCALLTYPE
CInputPin::CheckFormat(
    const AM_MEDIA_TYPE *pmt)
{
    PKSMULTIPLE_ITEM MultipleItem;
    PKSDATAFORMAT DataFormat;
    HRESULT hr;
    IKsObject * KsObjectParent;
    HANDLE hFilter;

    if (!pmt)
        return E_POINTER;

    hr = m_ParentFilter->QueryInterface(IID_IKsObject, (LPVOID*)&KsObjectParent);
    if (FAILED(hr))
        return hr;

    hFilter = KsObjectParent->KsGetObjectHandle();

    KsObjectParent->Release();

    if (!hFilter)
        return E_HANDLE;


    hr = KsGetMultiplePinFactoryItems(hFilter, m_PinId, KSPROPERTY_PIN_DATARANGES, (PVOID*)&MultipleItem);
    if (FAILED(hr))
        return S_FALSE;

    DataFormat = (PKSDATAFORMAT)(MultipleItem + 1);
    for(ULONG Index = 0; Index < MultipleItem->Count; Index++)
    {
        if (IsEqualGUID(pmt->majortype, DataFormat->MajorFormat) &&
            IsEqualGUID(pmt->subtype, DataFormat->SubFormat) &&
            IsEqualGUID(pmt->formattype, DataFormat->Specifier))
        {
            // format is supported
            CoTaskMemFree(MultipleItem);
#ifdef KSPROXY_TRACE
            OutputDebugStringW(L"CInputPin::CheckFormat format OK\n");
#endif
            return S_OK;
        }
        DataFormat = (PKSDATAFORMAT)((ULONG_PTR)DataFormat + DataFormat->FormatSize);
    }
    //format is not supported
    CoTaskMemFree(MultipleItem);
    return S_FALSE;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::CreatePin(
    const AM_MEDIA_TYPE *pmt)
{
    PKSMULTIPLE_ITEM MediumList;
    PKSMULTIPLE_ITEM InterfaceList;
    PKSPIN_MEDIUM Medium;
    PKSPIN_INTERFACE Interface;
    IKsInterfaceHandler * InterfaceHandler;
    HRESULT hr;

    // query for pin medium
    hr = KsQueryMediums(&MediumList);
    if (FAILED(hr))
        return hr;

    // query for pin interface
    hr = KsQueryInterfaces(&InterfaceList);
    if (FAILED(hr))
    {
        // failed
        CoTaskMemFree(MediumList);
        return hr;
    }

    if (MediumList->Count)
    {
        //use first available medium
        Medium = (PKSPIN_MEDIUM)(MediumList + 1);
    }
    else
    {
        // default to standard medium
        Medium = &StandardPinMedium;
    }

    if (InterfaceList->Count)
    {
        //use first available interface
        Interface = (PKSPIN_INTERFACE)(InterfaceList + 1);
    }
    else
    {
        // default to standard interface
        Interface = &StandardPinInterface;
    }

    if (m_Communication != KSPIN_COMMUNICATION_BRIDGE && m_Communication != KSPIN_COMMUNICATION_NONE)
    {
        if (!m_InterfaceHandler)
        {
            // now load the IKsInterfaceHandler plugin
            hr = CoCreateInstance(Interface->Set, NULL, CLSCTX_INPROC_SERVER, IID_IKsInterfaceHandler, (void**)&InterfaceHandler);
            if (FAILED(hr))
            {
                // failed to load interface handler plugin
#ifdef KSPROXY_TRACE
                OutputDebugStringW(L"CInputPin::CreatePin failed to load InterfaceHandlerPlugin\n");
#endif
                CoTaskMemFree(MediumList);
                CoTaskMemFree(InterfaceList);

                return hr;
            }

            // now set the pin
            hr = InterfaceHandler->KsSetPin((IKsPin*)this);
            if (FAILED(hr))
            {
                // failed to load interface handler plugin
#ifdef KSPROXY_TRACE
                OutputDebugStringW(L"CInputPin::CreatePin failed to initialize InterfaceHandlerPlugin\n");
#endif
                InterfaceHandler->Release();
                CoTaskMemFree(MediumList);
                CoTaskMemFree(InterfaceList);
                return hr;
            }

            // store interface handler
            m_InterfaceHandler = InterfaceHandler;
        }

        // now create pin
        hr = CreatePinHandle(Medium, Interface, pmt);
        if (FAILED(hr))
        {
            m_InterfaceHandler->Release();
            m_InterfaceHandler = InterfaceHandler;
        }
    }
    else
    {
#ifdef KSPROXY_TRACE
        WCHAR Buffer[100];
        swprintf(Buffer, L"CInputPin::CreatePin unexpected communication %u %s\n", m_Communication, m_PinName);
        OutputDebugStringW(Buffer);
#endif
        hr = E_FAIL;
    }

    // free medium / interface / dataformat
    CoTaskMemFree(MediumList);
    CoTaskMemFree(InterfaceList);

    return hr;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::CreatePinHandle(
    PKSPIN_MEDIUM Medium,
    PKSPIN_INTERFACE Interface,
    const AM_MEDIA_TYPE *pmt)
{
    PKSPIN_CONNECT PinConnect;
    PKSDATAFORMAT DataFormat;
    ULONG Length;
    HRESULT hr;
    IKsObject * KsObjectParent;
    HANDLE hFilter;

    if (!pmt)
        return E_POINTER;

    hr = m_ParentFilter->QueryInterface(IID_IKsObject, (LPVOID*)&KsObjectParent);
    if (FAILED(hr))
        return hr;

    hFilter = KsObjectParent->KsGetObjectHandle();

    KsObjectParent->Release();

    if (!hFilter)
        return E_HANDLE;


    if (m_hPin != INVALID_HANDLE_VALUE)
    {
        // pin already exists
        //CloseHandle(m_hPin);
        //m_hPin = INVALID_HANDLE_VALUE;
        return S_OK;
    }


    // calc format size
    Length = sizeof(KSPIN_CONNECT) + sizeof(KSDATAFORMAT) + pmt->cbFormat;

    // allocate pin connect
    PinConnect = (PKSPIN_CONNECT)CoTaskMemAlloc(Length);
    if (!PinConnect)
    {
        // failed
        return E_OUTOFMEMORY;
    }

    // setup request
    CopyMemory(&PinConnect->Interface, Interface, sizeof(KSPIN_INTERFACE));
    CopyMemory(&PinConnect->Medium, Medium, sizeof(KSPIN_MEDIUM));
    PinConnect->PinId = m_PinId;
    PinConnect->PinToHandle = NULL;
    PinConnect->Priority.PriorityClass = KSPRIORITY_NORMAL;
    PinConnect->Priority.PrioritySubClass = KSPRIORITY_NORMAL;

    // get dataformat offset
    DataFormat = (PKSDATAFORMAT)(PinConnect + 1);

    // copy data format
    DataFormat->FormatSize = sizeof(KSDATAFORMAT) + pmt->cbFormat;
    DataFormat->Flags = 0;
    DataFormat->SampleSize = pmt->lSampleSize;
    DataFormat->Reserved = 0;
    CopyMemory(&DataFormat->MajorFormat, &pmt->majortype, sizeof(GUID));
    CopyMemory(&DataFormat->SubFormat,  &pmt->subtype, sizeof(GUID));
    CopyMemory(&DataFormat->Specifier, &pmt->formattype, sizeof(GUID));

    if (pmt->cbFormat)
    {
        // copy extended format
        CopyMemory((DataFormat + 1), pmt->pbFormat, pmt->cbFormat);
    }

    // create pin
    hr = KsCreatePin(hFilter, PinConnect, GENERIC_WRITE, &m_hPin);

    if (SUCCEEDED(hr))
    {
        // store current interface / medium
        CopyMemory(&m_Medium, Medium, sizeof(KSPIN_MEDIUM));
        CopyMemory(&m_Interface, Interface, sizeof(KSPIN_INTERFACE));
        CopyMemory(&m_MediaFormat, pmt, sizeof(AM_MEDIA_TYPE));

#ifdef KSPROXY_TRACE
        LPOLESTR pMajor, pSub, pFormat;
        StringFromIID(m_MediaFormat.majortype, &pMajor);
        StringFromIID(m_MediaFormat.subtype , &pSub);
        StringFromIID(m_MediaFormat.formattype, &pFormat);

        WCHAR Buffer[200];
        swprintf(Buffer, L"CInputPin::CreatePinHandle Major %s SubType %s Format %s pbFormat %p cbFormat %u\n", pMajor, pSub, pFormat, pmt->pbFormat, pmt->cbFormat);
        CoTaskMemFree(pMajor);
        CoTaskMemFree(pSub);
        CoTaskMemFree(pFormat);
        OutputDebugStringW(Buffer);
#endif

        if (pmt->cbFormat)
        {
            m_MediaFormat.pbFormat = (BYTE*)CoTaskMemAlloc(pmt->cbFormat);
            if (!m_MediaFormat.pbFormat)
            {
                CoTaskMemFree(PinConnect);
                m_MediaFormat.pbFormat = NULL;
                m_MediaFormat.cbFormat = 0;
                return E_OUTOFMEMORY;
            }
            CopyMemory(m_MediaFormat.pbFormat, pmt->pbFormat, pmt->cbFormat);
        }

        LPGUID pGuid;
        ULONG NumGuids = 0;

        // get all supported sets
        hr = GetSupportedSets(&pGuid, &NumGuids);
        if (FAILED(hr))
        {
#ifdef KSPROXY_TRACE
            OutputDebugStringW(L"CInputPin::CreatePinHandle GetSupportedSets failed\n");
#endif
            return hr;
        }

        // load all proxy plugins
        hr = LoadProxyPlugins(pGuid, NumGuids);
        if (FAILED(hr))
        {
#ifdef KSPROXY_TRACE
            OutputDebugStringW(L"CInputPin::CreatePinHandle LoadProxyPlugins failed\n");
#endif
            return hr;
        }

        // free sets
        CoTaskMemFree(pGuid);


        //TODO
        // connect pin pipes

    }

    // free pin connect
     CoTaskMemFree(PinConnect);

    return hr;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::GetSupportedSets(
    LPGUID * pOutGuid,
    PULONG NumGuids)
{
    KSPROPERTY Property;
    LPGUID pGuid;
    ULONG NumProperty = 0;
    ULONG NumMethods = 0;
    ULONG NumEvents = 0;
    ULONG Length;
    ULONG BytesReturned;
    HRESULT hr;

    Property.Set = GUID_NULL;
    Property.Id = 0;
    Property.Flags = KSPROPERTY_TYPE_SETSUPPORT;

    KsSynchronousDeviceControl(m_hPin, IOCTL_KS_PROPERTY, (PVOID)&Property, sizeof(KSPROPERTY), NULL, 0, &NumProperty);
    KsSynchronousDeviceControl(m_hPin, IOCTL_KS_METHOD, (PVOID)&Property, sizeof(KSPROPERTY), NULL, 0, &NumMethods);
    KsSynchronousDeviceControl(m_hPin, IOCTL_KS_ENABLE_EVENT, (PVOID)&Property, sizeof(KSPROPERTY), NULL, 0, &NumEvents);

    Length = NumProperty + NumMethods + NumEvents;

    assert(Length);

    // allocate guid buffer
    pGuid = (LPGUID)CoTaskMemAlloc(Length);
    if (!pGuid)
    {
        // failed
        return E_OUTOFMEMORY;
    }

    NumProperty /= sizeof(GUID);
    NumMethods /= sizeof(GUID);
    NumEvents /= sizeof(GUID);

#ifdef KSPROXY_TRACE
    WCHAR Buffer[200];
    swprintf(Buffer, L"CInputPin::GetSupportedSets NumProperty %lu NumMethods %lu NumEvents %lu\n", NumProperty, NumMethods, NumEvents);
    OutputDebugStringW(Buffer);
#endif

    // get all properties
    hr = KsSynchronousDeviceControl(m_hPin, IOCTL_KS_PROPERTY, (PVOID)&Property, sizeof(KSPROPERTY), (PVOID)pGuid, Length, &BytesReturned);
    if (FAILED(hr))
    {
        CoTaskMemFree(pGuid);
        return E_FAIL;
    }
    Length -= BytesReturned;

    // get all methods
    if (Length && NumMethods)
    {
        hr = KsSynchronousDeviceControl(m_hPin, IOCTL_KS_METHOD, (PVOID)&Property, sizeof(KSPROPERTY), (PVOID)&pGuid[NumProperty], Length, &BytesReturned);
        if (FAILED(hr))
        {
            CoTaskMemFree(pGuid);
            return E_FAIL;
        }
        Length -= BytesReturned;
    }

    // get all events
    if (Length && NumEvents)
    {
        hr = KsSynchronousDeviceControl(m_hPin, IOCTL_KS_ENABLE_EVENT, (PVOID)&Property, sizeof(KSPROPERTY), (PVOID)&pGuid[NumProperty+NumMethods], Length, &BytesReturned);
        if (FAILED(hr))
        {
            CoTaskMemFree(pGuid);
            return E_FAIL;
        }
        Length -= BytesReturned;
    }

    *pOutGuid = pGuid;
    *NumGuids = NumProperty+NumEvents+NumMethods;
    return S_OK;
}

HRESULT
STDMETHODCALLTYPE
CInputPin::LoadProxyPlugins(
    LPGUID pGuids,
    ULONG NumGuids)
{
    ULONG Index;
    LPOLESTR pStr;
    HKEY hKey, hSubKey;
    HRESULT hr;
    IUnknown * pUnknown;

    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"SYSTEM\\CurrentControlSet\\Control\\MediaInterfaces", 0, KEY_READ, &hKey) != ERROR_SUCCESS)
    {
        OutputDebugStringW(L"CInputPin::LoadProxyPlugins failed to open MediaInterfaces key\n");
        return E_FAIL;
    }

    // enumerate all sets
    for(Index = 0; Index < NumGuids; Index++)
    {
        // convert to string
        hr = StringFromCLSID(pGuids[Index], &pStr);
        if (FAILED(hr))
            return E_FAIL;

        // now try open class key
        if (RegOpenKeyExW(hKey, pStr, 0, KEY_READ, &hSubKey) != ERROR_SUCCESS)
        {
            // no plugin for that set exists
            CoTaskMemFree(pStr);
            continue;
        }

        // try load plugin
        hr = CoCreateInstance(pGuids[Index], (IBaseFilter*)this, CLSCTX_INPROC_SERVER, IID_IUnknown, (void**)&pUnknown);
        if (SUCCEEDED(hr))
        {
            // store plugin
            m_Plugins.push_back(pUnknown);
        }
        // close key
        RegCloseKey(hSubKey);
    }

    // close media interfaces key
    RegCloseKey(hKey);
    return S_OK;
}

HRESULT
WINAPI
CInputPin_Constructor(
    IBaseFilter * ParentFilter,
    LPCWSTR PinName,
    HANDLE hFilter,
    ULONG PinId,
    KSPIN_COMMUNICATION Communication,
    REFIID riid,
    LPVOID * ppv)
{
    CInputPin * handler = new CInputPin(ParentFilter, PinName, PinId, Communication);

    if (!handler)
        return E_OUTOFMEMORY;

    if (FAILED(handler->QueryInterface(riid, ppv)))
    {
        /* not supported */
        delete handler;
        return E_NOINTERFACE;
    }

    return S_OK;
}