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TVGAPI.c：源码内容
							#include "Config.h"		// Global Configuration - do not remove!
#ifdef TV_GUARDIAN_ENABLE
#include "Playcoretvgtvgapi.h"
#include "playcorepsps.h"
#include "decoderdecoder.h"
#include "kerneleventdef.h"
#include "playcorecoremaincoregdef.h"
#include "playcorescpadscmgr.h"
extern BYTE gLine21MuteQueue_Read, gLine21MuteQueue_Write;
extern LINE21MUTEENTRY	Line21MuteQueue[LINE21MUTEQUEUESIZE];
extern BYTE gLine21DataBufferPool_Read, gLine21DataBufferPool_Write;
extern LINE21DATA_BUFFER_POOL Line21DataBufferPool[NUM_OF_LINE21DATA_BUFFER_POOL];
extern NV_SETTINGS *gps;
//extern BYTE mute_sem;
#ifdef _DEBUG
extern BYTE datain_session_id;
#endif
const char tvg_message_array1[] = {"TVG"};
const char tvg_message_array2[] = {"NOTVG"};
const char tvg_message_array3[] = {"TV GUARDIAN ACTIVATED"};
const char tvg_message_array4[] = {"TVG-DVD DICT V1.05"};
uchar GetTVGMode( void ) {
//  return(unsigned char)(gps->tvg_mode);
	return PS_Get_TVG_Mode_Value();
}
uchar GetTVGCCOperation( void ) {
//  return((unsigned char)(gps->tvg_cc));
	return PS_Get_TVG_CC_Value();
}
uchar GetCCShiftValue( void ) {
//  return((BYTE)(gps->tvg_cc_channel));
	return PS_Get_TVG_CC_Channel_Value();
}
void DisplayOperationalMessage(uchar message_index) {
	switch ( message_index ){
		case BUG_TVG:
//		  ie_send_ex(IE_UI_TVG_MSG_DISPLAY, (void *)(tvg_message_array1));
		  break;
		case BUG_NOTVG:
//		  ie_send_ex(IE_UI_TVG_MSG_DISPLAY, (void *)(tvg_message_array2));
		  break;
		case BUG_TVG_ACTIVE:
//		  ie_send_ex(IE_UI_TVG_MSG_DISPLAY, (void *)(tvg_message_array3));
		  break;
		case BUG_TVG_VERSION:
//		  ie_send_ex(IE_UI_TVG_MSG_DISPLAY, (void *)(tvg_message_array4));
		  break;
	}
  return;
}
void HostDispalyTVGMsg(void)
{
	 ie_send_ex(IE_UI_TVG_MSG_DISPLAY, (void *)(tvg_message_array1));
}
void MuteAudio( uchar enable, uchar *offset) {
	BYTE index;
//	if ( gps->tvg_cc != TVG_CC_ONCUSS )
//		return;
	
	index = ( gLine21MuteQueue_Write + 1 ) % LINE21MUTEQUEUESIZE;
#ifdef _DEBUG
	//rtouts("Mute command: ");debug_out_bx(enable); rtouts(" Offset: "); debug_out_bx(*offset); rtouts(" GOP is: ");
   	//debug_out_bx(Line21DataBufferPool[gLine21DataBufferPool_Write].GopCounter); 
	//rtouts("Session ID: "); debug_out_bx(datain_session_id); rtouts("n");
#endif
	if (index != gLine21MuteQueue_Read){
		Line21MuteQueue[index].mGOP = Line21DataBufferPool[gLine21DataBufferPool_Write].GopCounter;
		Line21MuteQueue[index].mCmd = (enable == 1 ) ? 1: 0;
		Line21MuteQueue[index].mOffset = (BYTE)((*offset) >> 1);
		gLine21MuteQueue_Write = index;
#if 0		
		if ( enable ){
			Line21MuteQueue[index].mMute = (BYTE)((*offset)<<1);
			Line21MuteQueue[index].mGOP = Line21DataBufferPool[gLine21DataBufferPool_Write].GopCounter;
	//		mute_sem ++;
			gLine21MuteQueue_Write = index;			
		}
		else{
	//		if ( mute_sem){
				Line21MuteQueue[index].mUNMute = (BYTE)((*offset)<<1);
				Line21MuteQueue[index].mGOP = Line21DataBufferPool[gLine21DataBufferPool_Write].GopCounter;				
	//			mute_sem --;
				gLine21MuteQueue_Write = index;				
	//		}
//			else
				//dbouts("Ignore unmute commandn");
		}
#endif		
	}
	else
		dbg_printf(("Not enough Mute Queue!n"));
  return;
}
#endif //TV_GUARDIAN_ENABLE

						