gentuner.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 _GEN_TUNER_H_
#define _GEN_TUNER_H_

#include "TunerInfo.h"
#include "ITuner.h"

class I2cIF;

class GenTuner : public ITuner
{
public:
    GenTuner(
        I2cIF* p_i2c, 
        DWORD tuner_type, 
        BYTE tuner_address = 0xC0, 
        BYTE sif_address=0x86);
    
    GenTuner(
        I2cIF* p_i2c, 
        TUNER_INFO* p_tuner_info, 
        BYTE tuner_address = 0xC0, 
        BYTE sif_address=0x86);

    virtual ~GenTuner();

    virtual BOOLEAN setFrequency(PULONG p_frequency, DWORD standard, DWORD tuning_flags);
    virtual BOOLEAN setFrequency(ULONG frequency, DWORD standard);

    virtual DWORD setChannel(
        ULONG country_code, 
        DWORD standard,
        DWORD channel_number, 
        DWORD use_antenna);



    //GetSignalOffset() return values:
    // 0 if signal is locked
    // -1 if no signal detected
    // other value needed to add to signal if signal is detected off the central frequency
    virtual LONG getSignalOffset(); 
    virtual BOOLEAN setMode(ULONG mode);

   
    //Accessors to tuner information
    virtual DWORD getSupportedModes();
    virtual DWORD getSupportedStandards(ULONG mode);
    virtual DWORD getMinFrequency(ULONG mode);
    virtual DWORD getMaxFrequency(ULONG mode);
    virtual DWORD getNumInputs(ULONG mode);
    
protected:

    LONG getTVSignalPllStatus();
    LONG getTVSignalPllStatusAFC();
    LONG getFMRadioSignalStrengthAFC();
    PSTANDARD_SPECIFIC_INFO getBytesForCurrentStandard();
    VOID getBytesForFrequency(ULONG frequency, SET_FREQUENCY_INFO& info);

    virtual VOID program2ndIF(
        BYTE switch_byte,
        BYTE adjust_byte,
        BYTE data_byte,
        BOOLEAN set_fm_sensitivity);
    DWORD getNextSupportedStandard(DWORD standards_used);

    BOOLEAN fineTuningFrequency(ULONG frequency, DWORD standard);
    BOOLEAN setTunerFrequency(ULONG frequency, DWORD standard);

    I2cIF*                  _p_i2c;
    BYTE                    _i2c_address;
    BYTE                    _2if_address;
    TUNER_INFO              _tuner_info;
    DWORD                   _current_standard;

private:
    //Member variables.
    
    DWORD                   _standard[MAX_STANDARDS];    
    DWORD                   _mode;
    DWORD                   _tuner_type;
    TV_FREQUENCY_MODE       _tv_frequency_mode;
	BOOLEAN                 _is_irc_ch5_checked;
	BOOLEAN                 _is_irc_ch6_checked;
};

#endif