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mediamrk.h：源码内容
							/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: mediamrk.h,v 1.1.1.1.50.1 2004/07/09 02:05:58 hubbe Exp $
 * 
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 * portions it created.
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 * ***** END LICENSE BLOCK ***** */
#if defined(HELIX_FEATURE_MEDIAMARKER)
#ifndef MEDIAMRK_H
#define MEDIAMRK_H
// Forward declarations
typedef _INTERFACE IHXMediaMarkerSink    IHXMediaMarkerSink;
typedef _INTERFACE IHXMediaMarkerManager IHXMediaMarkerManager;
typedef _INTERFACE IHXValues             IHXValues;
typedef _INTERFACE IHXBuffer             IHXBuffer;
class HXPlayer;
class CHXMapStringToOb;
class CHXMapPtrToPtr;
class CHXSimpleList;
class CMarkerInfo
{
public:
    CMarkerInfo(IHXBuffer* pURLStr,
                IHXBuffer* pNameStr,
                UINT32      ulTime,
                IHXValues* pOtherParams);
    virtual ~CMarkerInfo();
    IHXBuffer* m_pURLStr;
    IHXBuffer* m_pNameStr;
    UINT32      m_ulTime;
    IHXValues* m_pOtherParams;
};
class CHXMediaMarkerManager : public IHXMediaMarkerManager
{
public:
    CHXMediaMarkerManager(HXPlayer* pPlayer);
    virtual ~CHXMediaMarkerManager();
    // IUnknown methods
    STDMETHOD(QueryInterface)   (THIS_ REFIID riid, void** ppvObj);
    STDMETHOD_(ULONG32,AddRef)  (THIS);
    STDMETHOD_(ULONG32,Release) (THIS);
    // CHXMediaMarkerManager methods
    STDMETHOD(Close) (THIS);
    // IHXMediaMarkerManager methods
    STDMETHOD(AddMediaMarkerSink)       (THIS_ IHXMediaMarkerSink* pSink);
    STDMETHOD(RemoveMediaMarkerSink)    (THIS_ IHXMediaMarkerSink* pSink);
    STDMETHOD(AddMediaMarkerSinkFilter) (THIS_ IHXMediaMarkerSink* pSink,
                                               IHXValues*          pFilter);
    STDMETHOD(ResolveMarker)            (THIS_ IHXBuffer* pURLStr,
                                               IHXBuffer* pMarkerNameStr,
                                               UINT32      ulTime,
                                               IHXValues* pOtherMarkerParams);
    STDMETHOD_(BOOL,IsMarkerResolved)   (THIS_ IHXBuffer* pURLStr,
                                               IHXBuffer* pMarkerNameStr);
    STDMETHOD(GetFirstMarker)           (THIS_ IHXMediaMarkerSink* pSink,
                                               REF(IHXBuffer*)     rpURLStr,
                                               REF(IHXBuffer*)     rpMarkerNameStr,
                                               REF(UINT32)          rulTime,
                                               REF(IHXValues*)     rpOtherMarkerParams);
    STDMETHOD(GetNextMarker)            (THIS_ IHXMediaMarkerSink* pSink,
                                               REF(IHXBuffer*)     rpURLStr,
                                               REF(IHXBuffer*)     rpMarkerNameStr,
                                               REF(UINT32)          rulTime,
                                               REF(IHXValues*)     rpOtherMarkerParams);
protected:
    INT32          m_lRefCount;
    HXPlayer*     m_pPlayer;
    CHXSimpleList* m_pMarkerList;
    CHXSimpleList* m_pSinkList;
    void           ClearMarkerList();
    void           ClearSinkList();
    BOOL           WasSinkAdded(IHXMediaMarkerSink* pSink);
    HX_RESULT      AddMarkerInfo(CMarkerInfo* pInfo);
    BOOL           AreMarkersIdentical(CMarkerInfo* pInfo1, CMarkerInfo* pInfo2);
    void           BroadcastMarkerToSinks(CMarkerInfo* pInfo);
    BOOL           SinkWantsThisMarker(IHXMediaMarkerSink* pSink,
                                       CMarkerInfo*         pInfo);
};
#endif /* #ifdef MEDIAMRK_H */
#endif /* #if defined(HELIX_FEATURE_MEDIAMARKER) */

						