116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
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//==========================================================================;
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//
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// fileplaybackimpl.h : additional infrastructure to support implementing IMSVidPlayback
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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 FILEPLAYBACKIMPL_H
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#define FILEPLAYBACKIMPL_H
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#include "playbackimpl.h"
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namespace MSVideoControl {
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template<class T, LPCGUID LibID, LPCGUID KSCategory, class MostDerivedInterface = IMSVidFilePlayback>
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class DECLSPEC_NOVTABLE IMSVidFilePlaybackImpl :
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public IMSVidPlaybackImpl<T, LibID, KSCategory, MostDerivedInterface> {
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protected:
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CComBSTR m_FileName;
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int m_iReader;
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bool m_fGraphInit;
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public:
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IMSVidFilePlaybackImpl() :
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m_iReader(-1),
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m_fGraphInit(false)
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{}
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virtual ~IMSVidFilePlaybackImpl() {}
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STDMETHOD(get_FileName)(BSTR * pFileName) {
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if (!m_fInit) {
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return ImplReportError(__uuidof(T), IDS_OBJ_NO_INIT, __uuidof(IMSVidFilePlayback), CO_E_NOTINITIALIZED);
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}
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if (!pFileName) {
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return E_POINTER;
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}
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*pFileName = m_FileName.Copy();
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return NOERROR;
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}
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STDMETHOD(InitGraph)(){
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TRACELM(TRACE_DETAIL, "MSVidFilePlaybackImpl::InitGraph()");
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HRESULT hr = put_CurrentPosition(0);
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if(FAILED(hr)){
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//ASSERT(SUCCEEDED(hr)); // This fails sometimes, we should just ignore it.
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TRACELM(TRACE_ERROR, "MSVidFilePlaybackImpl::InitGraph() put_CurrentPosition(0) failed");
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}
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hr = put_Rate(1);
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if(FAILED(hr)){
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//ASSERT(SUCCEEDED(hr)); // This fails sometimes, we should just ignore it.
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TRACELM(TRACE_ERROR, "MSVidFilePlaybackImpl::InitGraph() put_Rate(1) Normal failed");
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}
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hr = IMSVidPlaybackImpl<T, LibID, KSCategory, MostDerivedInterface>::put_Rate(1);
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if(FAILED(hr)){
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//ASSERT(SUCCEEDED(hr)); // This fails sometimes, we should just ignore it.
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TRACELM(TRACE_ERROR, "MSVidFilePlaybackImpl::InitGraph() put_Rate(1) Base class failed");
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}
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return NOERROR;
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}
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STDMETHOD(put_FileName) (BSTR FileName) {
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if (!FileName) {
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return E_POINTER;
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}
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if (!m_fInit) {
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return ImplReportError(__uuidof(T), IDS_OBJ_NO_INIT, __uuidof(IMSVidFilePlayback), CO_E_NOTINITIALIZED);
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}
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try {
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HRESULT hr;
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TRACELSM(TRACE_DETAIL, (dbgDump << "MSVidFilePlaybackImpl::put_FileName() name = " << FileName), "");
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if (m_pGraph && !m_pGraph.IsStopped()) {
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return ImplReportError(__uuidof(T), IDS_INVALID_STATE, __uuidof(IMSVidFilePlayback), HRESULT_FROM_WIN32(ERROR_INVALID_STATE));
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}
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if (m_pContainer) {
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InitGraph();
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T* pT = static_cast<T*>(this);
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hr = m_pContainer->Decompose(pT);
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if (FAILED(hr)) {
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return ImplReportError(__uuidof(T), IDS_CANT_REMOVE_SEG, __uuidof(IMSVidFilePlayback), hr);
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}
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}
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if (m_Filters.size() && m_pContainer) {
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for (DSFilterList::iterator i = m_Filters.begin(); i != m_Filters.end(); ++i) {
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bool rc = m_pGraph.RemoveFilter(*i);
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if (!rc) {
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TRACELM(TRACE_ERROR, "MSVidFilePlaybackImpl::put_FileName() can't remove filter");
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return ImplReportError(__uuidof(T), IDS_CANT_REMOVE_FILTER, __uuidof(IMSVidFilePlayback), E_UNEXPECTED);
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}
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}
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m_Filters.clear();
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}
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m_FileName = FileName;
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m_fGraphInit = true;
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} catch(ComException &e) {
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m_Filters.clear();
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m_iReader = -1;
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return e;
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}
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return NOERROR;
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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 - fileplaybackimpl.h
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