provider.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. 
*
\******************************************************************* ---*/ 

#ifndef PROVIDER_H
#define PROVIDER_H

//Ignore warnings for deprecated functions used in DXSDK headers
#pragma warning(disable : 4996)
#include <streams.h>
#pragma warning(default : 4996)

#include <winioctl.h>
#include <ks.h>
#include <ksproxy.h>

class CProvider
{
public:
    CProvider();
    virtual ~CProvider();

    bool initialize(IBaseFilter* p_filter);
    bool unInitialize();

    bool isInitialized();

    DWORD getStatus();

private:
    int _ref_count;
    IBaseFilter* _p_provider_filter;
    IKsPropertySet* _properties;
};

//Input buffers have a KSPROPERTY in front of the input buffer.
//Output buffers are just the buffer.
//The following macro defines a type with the KSPROPERTY in front
// of another type.

#define PROPERTY_STRUCT(type)       \
typedef struct _PROPERTY_##type     \
{                                   \
    KSPROPERTY property;            \
    type       data;                \
}PROPERTY_##type,*PPROPERTY_##type

PROPERTY_STRUCT(DWORD);

#endif // PROVIDER_H