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165 lines
3.3 KiB
165 lines
3.3 KiB
// MultiTrackTerminal.h: interface for the CMultiTrackTerminal class.
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//
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//////////////////////////////////////////////////////////////////////
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#if !defined(_MULTITRACKTERMINAL_DOT_H_INCLUDED_)
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#define _MULTITRACKTERMINAL_DOT_H_INCLUDED_
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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template <class T>
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class ITMultiTrackTerminalVtbl : public ITMultiTrackTerminal
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{
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};
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class CMultiTrackTerminal;
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typedef IDispatchImpl<ITMultiTrackTerminalVtbl<CMultiTrackTerminal>, &IID_ITMultiTrackTerminal, &LIBID_TAPI3Lib> CTMultiTrack;
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class CMultiTrackTerminal :
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public CComObjectRootEx<CComMultiThreadModel>,
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public CTMultiTrack
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{
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public:
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BEGIN_COM_MAP(CMultiTrackTerminal)
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COM_INTERFACE_ENTRY(IDispatch)
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COM_INTERFACE_ENTRY(ITMultiTrackTerminal)
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END_COM_MAP()
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//
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// the logic for creating a track terminal needs to be implemented by the
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// specific terminals, so this is a pure virtual method
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//
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virtual HRESULT STDMETHODCALLTYPE CreateTrackTerminal(
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IN long MediaType,
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IN TERMINAL_DIRECTION TerminalDirection,
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OUT ITTerminal **ppTerminal
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) = 0;
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public:
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virtual HRESULT STDMETHODCALLTYPE get_TrackTerminals(
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OUT VARIANT *pVariant
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);
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virtual HRESULT STDMETHODCALLTYPE EnumerateTrackTerminals(
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IEnumTerminal **ppEnumTerminal
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);
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virtual HRESULT STDMETHODCALLTYPE get_MediaTypesInUse(
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OUT long *plMediaTypesInUse
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);
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virtual HRESULT STDMETHODCALLTYPE get_DirectionsInUse(
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OUT TERMINAL_DIRECTION *plDirectionsInUsed
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);
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virtual HRESULT STDMETHODCALLTYPE RemoveTrackTerminal(
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IN ITTerminal *pTrackTerminalToRemove
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);
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public:
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CMultiTrackTerminal();
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virtual ~CMultiTrackTerminal();
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protected:
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HRESULT AddTrackTerminal(ITTerminal *pTrackTerminalToAdd);
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HRESULT ReleaseAllTracks();
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//
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// a helper method that returns true if the terminal is in the list of managed tracks
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//
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BOOL DoIManageThisTrack(ITTerminal *pTrackInQuestion)
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{
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CLock lock(m_lock);
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int nIndex = m_TrackTerminals.Find(pTrackInQuestion);
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return (nIndex >= 0);
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}
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//
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// returns the number of tracks managed by this terminal
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//
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int CountTracks();
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public:
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//
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// the derived class, CComObject, implements these. Here declare as pure
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// virtual so we can refer to these methods from ChildRelease and
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// ChildAddRef()
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//
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virtual ULONG STDMETHODCALLTYPE AddRef() = 0;
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virtual ULONG STDMETHODCALLTYPE Release() = 0;
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//
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// called by a track terminals when they are addref'ed or released
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//
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virtual void ChildAddRef();
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virtual void ChildRelease();
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protected:
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//
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// we have to adjust refcount with the information on the number of tracks that we are managing
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//
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ULONG InternalAddRef();
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ULONG InternalRelease();
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protected:
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//
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// collection of track terminals
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//
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CMSPArray<ITTerminal*> m_TrackTerminals;
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protected:
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//
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// critical section.
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//
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CMSPCritSection m_lock;
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private:
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//
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// this data member is used to keep the count of the tracks managed by this
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// terminal
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//
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int m_nNumberOfTracks;
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};
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#endif // !defined(_MULTITRACKTERMINAL_DOT_H_INCLUDED_)
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