Source code of Windows XP (NT5)
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//==========================================================================;
//
// Composition.h : Declaration of the custom composition class for gluing analog capture to ovmixer
// Copyright (c) Microsoft Corporation 1999.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef SBES2CC_H
#define SBES2CC_H
#pragma once
#include <winerror.h>
#include <algorithm>
#include <compimpl.h>
#include <seg.h>
#include "resource.h" // main symbols
#include <objectwithsiteimplsec.h>
#include "dsextend.h"
/////////////////////////////////////////////////////////////////////////////
// CSbeS2CCComp
class ATL_NO_VTABLE __declspec(uuid("9193A8F9-0CBA-400e-AA97-EB4709164576")) CSbeS2CCComp : public CComObjectRootEx<CComSingleThreadModel>, public CComCoClass<CSbeS2CCComp, &__uuidof(CSbeS2CCComp)>, public IObjectWithSiteImplSec<CSbeS2CCComp>, public IMSVidCompositionSegmentImpl<CSbeS2CCComp> { public: CSbeS2CCComp() {} virtual ~CSbeS2CCComp() {}
REGISTER_NONAUTOMATION_OBJECT(IDS_PROJNAME, IDS_REG_SBES2CC_DESC, LIBID_MSVidCtlLib, __uuidof(CSbeS2CCComp));
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_COM_MAP(CSbeS2CCComp) COM_INTERFACE_ENTRY(IMSVidCompositionSegment) COM_INTERFACE_ENTRY(IMSVidGraphSegment) COM_INTERFACE_ENTRY(IObjectWithSite) COM_INTERFACE_ENTRY(IPersist) END_COM_MAP()
public:
PQCreateDevEnum m_pSystemEnum;
//////////////
// IMSVidGraphSegment
// IMSVidCompositionSegment
STDMETHOD(Compose)(IMSVidGraphSegment * upstream, IMSVidGraphSegment * downstream) { VIDPERF_FUNC; if (m_fComposed) { return NOERROR; } ASSERT(m_pGraph); try { TRACELM(TRACE_ERROR, "CSbeS2CCComp::Compose()"); VWGraphSegment up(upstream); ASSERT(up.Graph() == m_pGraph); VWGraphSegment down(downstream); ASSERT(down.Graph() == m_pGraph); if (upstream == downstream) { return Error(IDS_CANT_COMPOSE_WITH_SELF, __uuidof(CSbeS2CCComp), E_INVALIDARG); } if (up.begin() == up.end()) { TRACELM(TRACE_ERROR, "CSbeS2CCComp::Compose() can't compose empty up segment"); return NOERROR; } if (down.begin() == down.end()) { TRACELM(TRACE_ERROR, "CSbeS2CCComp::Compose() can't compose empty down segment"); // this is not an error, for example, CA is an empty segment.
return NOERROR; } // do the list backwards
DSFilterList upF; /* for(VWGraphSegment::iterator upStart = up.begin(); upStart != up.end(); ++upStart){
upF.push_back(*upStart); } */ DSMediaType mtL21(MEDIATYPE_AUXLine21Data, MEDIASUBTYPE_Line21_BytePair);
for (VWGraphSegment::iterator iStart = up.begin(); iStart != up.end(); ++iStart) { ASSERT((*iStart).GetGraph() == m_pGraph); DSFilter::iterator iPins; for(iPins = (*iStart).begin(); iPins != (*iStart).end(); ++iPins){ DSPin::iterator iMedias; for(iMedias = (*iPins).begin(); iMedias != (*iPins).end(); ++iMedias){ if(mtL21 == (*iMedias)){ break; } } if(iMedias != (*iPins).end()){ break; } } if(iPins == (*iStart).end()){ continue; } for (VWGraphSegment::iterator iStop = down.begin(); iStop != down.end(); ++iStop) { ASSERT((*iStop).GetGraph() == m_pGraph); DSFilter pStart(*iStart); DSFilter pStop(*iStop); HRESULT hr = m_pGraph.Connect(pStart, pStop, m_Filters); if (SUCCEEDED(hr)) { m_Segments.push_back(up); m_Segments.push_back(down); m_pDown = m_Segments.end(); --m_pDown; m_pUp = m_pDown; --m_pUp; m_fComposed = true; return NOERROR; } } } TRACELM(TRACE_ERROR, "CSbeS2CCComp::Compose() compose didn't connect anything"); return S_FALSE; } catch (ComException &e) { return e; } catch (...) { return E_UNEXPECTED; } } };
#endif // SBES2CC_H
// end of file - SBES2CC.h
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