osdutil.c

以ST公司CPU为核心的彩色电视机的完整源程序。

/********************* SGS-THOMSON MICROELECTRONICS ************************
FILENAME     : OSDUTIL.C
VERSION      : V1.0
DATE         : JAN 1999
AUTHOR(s)    : ASHISH RUDOLA/ DEEPAK DOSHI
PROCESSOR    : ST92195
DESCRIPTION  : This module contains functions utilities for handling displays.
MODIFICATIONS:
   -
*****************************************************************************/

#include "osdutil.h"
#include "macro.h"
#include "channel.h"
#include "clock.h"
#include "label.h"
#include "osdchar.h"
#include "register.h"
#include "source.h"
#include "utility.h"
#include "video.h"
#include "alarm.h"
#include "autosrch.h"
#include "i2c_bus.h"
#include "menuctrl.h"
#include "display.h"
#include "tv_glob.h"
#include "st92196.h"
#include "osddrv.h"
                    


/*****************************************************************************
INPUTS     : value - To be converted
	     selection - Convert tundreds or tens or units             
OUTPUTS    : ASCII character
DESCRIPTION: This function converts the argument to an ASCII character.
*****************************************************************************/
unsigned char convert_to_ASCII(unsigned char selection, unsigned int value)
{
	unsigned int i;                                /* Temporary storage */
  	i = value/1000;
	if(selection == HUNDREDS)  
		i = (value%1000)/100;
	if (selection == TENS)
		i = (value%100)/10;    
	if (selection == UNITS)
		i = value % 10;
	i = i + 0x30;
	return (unsigned char)i;
}



/*****************************************************************************
INPUTS     : DRAM pointer - Point the location to start with
	     hour - current time of day
	     minute - current time of day
OUTPUTS    : Return the next DRAM location
	     see convert_to_ASCII
	     see display_space   
	     see display_string
	     see write_character
DESCRIPTION: This function writes the time of day.
*****************************************************************************/

void display_clock( unsigned char row,unsigned char start_x,
                    unsigned char display_hour,
			        unsigned char display_minute)
{
/* Prepare clock parameters: 0:00 : 23 :59 */
unsigned char tmphigh,tmplow;
    if (display_hour & SET_NIBBLE_TIME)
         {
         display_hour &= ~SET_NIBBLE_TIME;
         tmphigh =0xa4;
         }
    else
         tmphigh = convert_to_ASCII(TENS, display_hour);
    tmplow =  convert_to_ASCII(UNITS, display_hour);


	if (display_hour & DISABLE_TIME)
		fill_char_in_line(row,start_x,0xa4,2);	
	else
	    { 
	    fill_char_in_line(row,start_x,tmphigh,1);
        fill_char_in_line(row,start_x+1,tmplow,1);
        }
    
    fill_char_in_line(row,start_x+2,':',1);

    if (display_minute & SET_NIBBLE_TIME)
         {
         display_minute &= ~SET_NIBBLE_TIME;
         tmphigh =0xa4;
         }
    else
         tmphigh = convert_to_ASCII(TENS, display_minute);
    tmplow =  convert_to_ASCII(UNITS, display_minute);

	if (display_minute & DISABLE_TIME)
		fill_char_in_line(row,start_x+3,0xa4,2);	
	else
	    { 
	    fill_char_in_line(row,start_x+3,tmphigh,1);
        fill_char_in_line(row,start_x+4,tmplow,1);
        }
}

void display_value(unsigned char row,unsigned char start_x,unsigned char value)
{
unsigned char tmp[3];
tmp[0] = convert_to_ASCII(TENS, value);
tmp[1] = convert_to_ASCII(UNITS, value);
tmp[2] = CHNULL;
fill_string_in_line(row,start_x,tmp);
}