cxcopyprotectprop.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) 2008 Conexant Systems, Inc. 
*     All rights reserved. 
*
\******************************************************************* ---*/ 

#ifndef _CX_COPY_PROTECT_PROP_H_
#define _CX_COPY_PROTECT_PROP_H_

extern "C"
{
    #include <wdm.h>
}

#include <windef.h>
#include <ks.h>
#include <ksmedia.h>

#include "CxCopyProtect.h"

typedef enum{
    CP_METHOD_FLAG_MPEG_STREAM  = 0,    // not implemented yet
    CP_METHOD_USE_LOWER_BITRATE = 1,    // not implemented yet 
    CP_METHOD_NO_OUTPUT_ON_PIN  = 2,    // not implemented yet 
    CP_METHOD_FLASH             = 3,
    CP_METHOD_BLACK             = 4,
    CP_METHOD_NONE              = 0xfe,
    CP_METHOD_USE_DEFAULT       = 0xff
} COPY_PROTECT_METHOD;

//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

/////////////////////////////////////////////////////////////////////////////////////////
//Class CxCopyProtectProp
//
// This is a collection of static functions that handle the CXFALCON control properties
//
class IVideoDecoder;

class CxCopyProtectProp
{

    //Structure definitions for input buffers.  They need a KSPROPERTY at the beginning.
    PROPERTY_STRUCT(DWORD);

public:
    CxCopyProtectProp(IVideoDecoder* p_decoder, COPY_PROTECT_METHOD copy_protect_method);
    ~CxCopyProtectProp();

    //////////////////////////////////////////////////////
    //Static DDK entry points for the CXCOPY_PROTECT property set

    static NTSTATUS static_getStatus(
        PIRP                                p_irp,
        PPROPERTY_DWORD                     p_request,
        PDWORD                              p_data);

	static NTSTATUS static_getCopyMacrovision(
        PIRP                                p_irp,
        PPROPERTY_DWORD                     p_request,
        PKS_COPY_MACROVISION                p_copy_macrovision);

    static VOID static_cpProc(CxCopyProtectProp* p_copy_protect_prop);
    VOID cpProc();

    NTSTATUS startCpThread();
    VOID stopCpThread();
    VOID checkCopyProtection();

protected:
    VOID cpBlack(DWORD cp_status);
    VOID cpFlash(DWORD cp_status);
    VOID videoMute();
    VOID videoUnmute();

private:
    IVideoDecoder*      _p_decoder;
    PVOID               _scramble_thread_object;    
    KEVENT              _scramble_event_object;
    DWORD               _cp_count;
    COPY_PROTECT_METHOD _method;
    BOOLEAN             _video_muted;
};

#define cpDefault(x) cpFlash(x)     // use cpFlash as default

#endif