directif.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 _DIRECTIF_H_
#define _DIRECTIF_H_

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

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

#include "device.h"
#include "SyncRegIo.h"
#include "DIF_reg.h"


//*****************************************************************************
// When setting standard, flags correct setting of PLL SRC
const DWORD DIF_USE_BASEBAND                          = 0xFFFFFFFF;

// Callback commands for DIF
typedef enum{
    CALCULATE_AVERAGE_SNR                   = 0,
    FREEZE_DIF_AGC_FOR_MAXIMUM_SENSTIVITY   = 1,
    FREEZE_DIF_AGC_FOR_NORMAL_SENSTIVITY    = 2,
    SET_DIF_IF_AGC_STATE                    = 3,
    SET_DIF_RF_AGC_STATE                    = 4,
    DISABLE_DIF_AGC                         = 5,
    ENABLE_DIF_AGC                          = 6,
    RESET_DIF_AGC                           = 7,
    GET_AGC_ALGORITHM_ENABLE_STATE          = 8
}GEN_SI_TUNER_CALLBACK_COMMANDS;

// Classes
class DirectIF
{
public:
    DirectIF(DEVICE_OBJECT* p_do, Device *p_device, SyncRegIo* p_registers,BOOL enableAGCalgorithm);
    ~DirectIF();

    static void static_setDIFbandpass(void *p_DIF,DWORD if_freq, BOOL spectral_invert, ULONG mode);

    static void static_Gen_Si_Tuner_Callback(void *p_Colibri, DWORD COMMAND, void* CALLBACK_CONTEXT);

    VOID powerUp();
	VOID powerDown();
    VOID setStandard(DWORD standard);
    VOID setStandard(DWORD standard, ULONG mode);
    VOID initialize();
    VOID correctSignalOffset();
    VOID setDIFbandpass(DWORD if_freq, BOOL spectral_invert, ULONG mode);
    VOID preChannelChange();
    VOID postChannelChange();
    VOID CalculateAverageSNR(ULONG* p_snr);
    VOID FreezeAgcForMaxSenstivity();
    VOID FreezeAgcForNormalSenstivity();
    VOID setIFAgcState(ULONG* p_agc_state);
    VOID setRFAgcState(ULONG* p_agc_state);
    VOID DisableAgc();
    VOID EnableAgc();
    VOID ResetAgc();
    VOID GetAgcAlgorithmEnableState(BOOL *p_enabled);
    VOID ResetAGCafterChannelChange();
    DWORD getStandard(){return _standard;}
    VOID ConfigureC2HHforLowIF(ULONG mode);

private:
    Device*         _p_device;
    SyncRegIo*      _p_registers;
    DWORD           _standard;
    ULONG           _mode;
    BOOL            _enableAGCalgorithm;
};


#endif