copyprotection.h

完整的基于Conxant平台的USB电视棒的WIN驱动程序。

/*+++ *******************************************************************\ 
* 
*  Copyright and Disclaimer: 
*  
*     --------------------------------------------------------------- 
*     This software is provided "AS IS" without warranty of any kind, 
*     either expressed or implied, including but not limited to the 
*     implied warranties of noninfringement, merchantability and/or 
*     fitness for a particular purpose.
*     --------------------------------------------------------------- 
*   
*     Copyright (c) 2004 Conexant Systems, Inc. 
*     All rights reserved. 
*
\******************************************************************* ---*/ 

// This class handles the details of detecting copy protection, walking the
// graph, and notifying anyone who is handles the copy protection status
// 'Set' method

#ifndef COPY_PROTECTION_H
#define COPY_PROTECTION_H

#include <vector>

#include "Provider.h"

class CCopyProtection
{
    public:
        CCopyProtection(IBaseFilter* p_filter);
        virtual ~CCopyProtection();

        HRESULT createFilterList();
        HRESULT destroyFilterList();
        DWORD detectStatus();
        HRESULT broadcastStatus();
    private:
        std::vector<IKsPropertySet*> _observers;
        DWORD _prev_cp_bits;    // Last copy protect status distributed
        IBaseFilter* _p_filter; // Pointer to containing filter
        CProvider* _provider;
} ;

#endif // COPY_PROTECTION_H