115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
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//==========================================================================;
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//
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// fp2ar.h : Declaration of the custom composition class for gluing file
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// playback to the audio renderer
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//
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// Copyright (c) Microsoft Corporation 1999.
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//
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/////////////////////////////////////////////////////////////////////////////
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#ifndef FP2ARCOMP_H
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#define FP2ARCOMP_H
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#pragma once
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#include <winerror.h>
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#include <algorithm>
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#include <compimpl.h>
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#include <seg.h>
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#include <objectwithsiteimplsec.h>
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#include "resource.h" // main symbols
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/////////////////////////////////////////////////////////////////////////////
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// CAnaCapComp
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class ATL_NO_VTABLE __declspec(uuid("CC23F537-18D4-4ece-93BD-207A84726979")) CFP2ARComp :
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public CComObjectRootEx<CComSingleThreadModel>,
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public CComCoClass<CFP2ARComp, &__uuidof(CFP2ARComp)>,
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public IObjectWithSiteImplSec<CFP2ARComp>,
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public IMSVidCompositionSegmentImpl<CFP2ARComp>
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{
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public:
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CFP2ARComp() {}
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virtual ~CFP2ARComp() {}
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REGISTER_NONAUTOMATION_OBJECT(IDS_PROJNAME,
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IDS_REG_FP2ARCOMP_DESC,
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LIBID_MSVidCtlLib,
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__uuidof(CFP2ARComp));
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DECLARE_PROTECT_FINAL_CONSTRUCT()
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BEGIN_COM_MAP(CFP2ARComp)
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COM_INTERFACE_ENTRY(IMSVidCompositionSegment)
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COM_INTERFACE_ENTRY(IMSVidGraphSegment)
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COM_INTERFACE_ENTRY(IPersist)
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COM_INTERFACE_ENTRY(IObjectWithSite)
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END_COM_MAP()
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// IMSVidComposition
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public:
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// IMSVidGraphSegment
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// IMSVidCompositionSegment
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STDMETHOD(Compose)(IMSVidGraphSegment * upstream, IMSVidGraphSegment * downstream)
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{
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TRACELM(TRACE_DEBUG, "CFP2ARComp::Compose()");
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if (m_fComposed) {
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return NOERROR;
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}
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ASSERT(m_pGraph);
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try {
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VWGraphSegment up(upstream);
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ASSERT(up.Graph() == m_pGraph);
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VWGraphSegment down(downstream);
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ASSERT(down.Graph() == m_pGraph);
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if (up.begin() == up.end()) {
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TRACELM(TRACE_ERROR, "CFP2ARComp::Compose() can't compose empty up segment");
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return E_INVALIDARG;
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}
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if (down.begin() == down.end()) {
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TRACELM(TRACE_ERROR, "CFP2ARComp::Compose() can't compose empty down segment");
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return E_INVALIDARG;
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}
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DSFilter pFP(*up.begin());
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ASSERT(!!pFP);
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ASSERT(pFP.GetGraph() == m_pGraph);
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VWGraphSegment::iterator iAR;
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DSFilter pAR;
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for (iAR = down.begin(); iAR != down.end(); ++iAR) {
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pAR = *iAR;
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if (IsDigitalAudioRenderer(pAR)) {
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break;
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}
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}
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if (iAR == down.end()) {
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TRACELM(TRACE_ERROR, "CFP2ARComp::Compose() FAILED to find AR ");
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return E_UNEXPECTED;
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}
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ASSERT(!!pAR);
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ASSERT(pAR.GetGraph() == m_pGraph);
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HRESULT hr = m_pGraph.Connect(pFP, pAR, m_Filters,
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DSGraph::ALLOW_WILDCARDS |
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DSGraph::DONT_TERMINATE_ON_RENDERER |
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DSGraph::IGNORE_MEDIATYPE_ERRORS,
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DOWNSTREAM);
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if (FAILED(hr)) {
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TRACELSM(TRACE_ERROR, (dbgDump << "CFP2ARComp::Compose() FAILED connect hr = " << hexdump(hr)), "");
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return hr;
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}
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m_fComposed = true;
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return NOERROR;
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} catch (ComException &e) {
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return e;
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} catch (...) {
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return E_UNEXPECTED;
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}
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}
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};
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#endif // FP2ARCOMP_H
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// end of file - FP2ARComp.h
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