86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
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//==========================================================================;
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//
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// pbsegimpl.h : additional infrastructure to support implementing IMSVidGraphSegment for
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// playback segments
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// nicely from c++
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// Copyright (c) Microsoft Corporation 1999.
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//
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/////////////////////////////////////////////////////////////////////////////
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#pragma once
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#ifndef PBSEGIMPL_H
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#define PBSEGIMPL_H
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#include <segimpl.h>
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#include <evcode.h>
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#include <deviceeventimpl.h>
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namespace MSVideoControl {
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template<class T, enum MSVidSegmentType segtype, LPCGUID pCategory, class MostDerivedClass = IMSVidGraphSegment>
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class DECLSPEC_NOVTABLE IMSVidPBGraphSegmentImpl :
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public IMSVidGraphSegmentImpl<T, segtype, pCategory, MostDerivedClass> {
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protected:
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public:
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// DON'T addref the container. we're guaranteed nested lifetimes
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// and an addref creates circular refcounts so we never unload.
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IMSVidPBGraphSegmentImpl() {}
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virtual ~IMSVidPBGraphSegmentImpl() {}
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STDMETHOD(OnEventNotify)(LONG lEvent, LONG_PTR lParm1, LONG_PTR lParm2) {
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if (lEvent == EC_COMPLETE) {
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T* pt = static_cast<T*>(this);
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CComQIPtr<IMSVidPlayback> ppb(this);
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if (!ppb) {
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return E_UNEXPECTED;
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}
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pt->Fire_EndOfMedia(ppb);
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// call Stop to make sure graph is stopped properly
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PQVidCtl pV(m_pContainer);
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pV->Stop();
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return NOERROR; // we notify caller that we handled the event if stop() fails
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}
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return E_NOTIMPL;
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}
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};
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template <class T, const IID* piid = &IID_IMSVidPlaybackEvent, class CDV = CComDynamicUnkArray>
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class CProxy_PlaybackEvent : public CProxy_DeviceEvent<T, piid, CDV>
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{
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public:
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VOID Fire_EndOfMedia(IMSVidPlayback *pPBDev)
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{
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T* pT = static_cast<T*>(this);
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int nConnectionIndex;
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CComVariant* pvars = new CComVariant[1];
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int nConnections = m_vec.GetSize();
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for (nConnectionIndex = 0; nConnectionIndex < nConnections; nConnectionIndex++)
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{
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pT->Lock();
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CComPtr<IUnknown> sp = m_vec.GetAt(nConnectionIndex);
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pT->Unlock();
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IDispatch* pDispatch = reinterpret_cast<IDispatch*>(sp.p);
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if (pDispatch != NULL)
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{
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pvars[0] = pPBDev;
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DISPPARAMS disp = { pvars, NULL, 1, 0 };
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pDispatch->Invoke(eventidEndOfMedia, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, &disp, NULL, NULL, NULL);
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}
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}
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delete[] pvars;
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}
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};
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}; // namespace
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#endif
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// end of file - pbsegimpl.h
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