www.pudn.com > AMCap_example.rar > crossbar.h

//------------------------------------------------------------------------------ 
// File: Crossbar.h 
// 
// Desc: DirectShow sample code - definition of class for controlling 
//       video crossbars. 
// 
// Copyright (c) Microsoft Corporation.  All rights reserved. 
//------------------------------------------------------------------------------ 
 
 
#ifndef __Crossbar_h__ 
#define __Crossbar_h__ 
 
 
//------------------------------------------------------------------------------ 
// Name: class CClass 
// Desc: This class contains routing information for the capture data 
//------------------------------------------------------------------------------ 
class CRouting { 
public: 
    class CRouting       *pLeftRouting; 
    class CRouting       *pRightRouting; 
    LONG                 VideoInputIndex; 
    LONG                 VideoOutputIndex; 
    LONG                 AudioInputIndex; 
    LONG                 AudioOutputIndex; 
    IAMCrossbar         *pXbar; 
    LONG                 InputPhysicalType; 
    LONG                 OutputPhysicalType; 
    LONG                 Depth; 
 
    CRouting () {}; 
    ~CRouting () {}; 
}; 
 
typedef CGenericList CRoutingList; 
 
 
 
 
//------------------------------------------------------------------------------ 
// Name: class CCrossbar 
// Desc: The actual helper class for Crossbars 
//------------------------------------------------------------------------------ 
class CCrossbar 
{ 
private: 
    IPin                    *m_pStartingPin; 
    CRouting                 m_RoutingRoot; 
    CRoutingList            *m_RoutingList; 
    int                      m_CurrentRoutingIndex; 
 
    HRESULT BuildRoutingList ( 
                IPin     *pStartingInputPin, 
                CRouting *pCRouting, 
                int       Depth); 
    HRESULT SaveRouting (CRouting *pRoutingNew); 
    HRESULT DestroyRoutingList(); 
    BOOL    StringFromPinType (TCHAR *pc, int nSize, long lType); 
     
    HRESULT GetCrossbarIPinAtIndex( 
                IAMCrossbar *pXbar, 
                LONG PinIndex, 
                BOOL IsInputPin, 
                IPin ** ppPin); 
    HRESULT GetCrossbarIndexFromIPin ( 
                IAMCrossbar * pXbar, 
                LONG * PinIndex, 
                BOOL IsInputPin, 
                IPin * pPin); 
 
public: 
 
    CCrossbar (IPin *pPin, HRESULT *phr); 
    ~CCrossbar(); 
 
    HRESULT GetInputCount (LONG *pCount); 
    HRESULT GetInputType  (LONG Index, LONG * PhysicalType); 
    HRESULT GetInputName  (LONG Index, TCHAR * pName, LONG NameSize); 
    HRESULT SetInputIndex (LONG Index); 
    HRESULT GetInputIndex (LONG *Index); 
 
}; 
 
#endif  // __Crossbar_h__