audio.h

以ST公司CPU为核心的彩色电视机的完整源程序。

/*********************** SGS-THOMSON MICROELECTRONICS ************************
FILENAME     : AUDIO.H
VERSION      : V1.0
DATE         : JAN 1999
AUTHOR(s)    : ASHISH RUDOLA / DEEPAK DOSHI
PROCESSOR    : ST92195
DESCRIPTION  : This module contains constant definitions and function
               prototypes.
MODIFICATIONS:	
	-
*****************************************************************************/
#ifndef _audiohead_
#define _audiohead_

#include "tv_glob.h"


void volume_up(void);
unsigned char check_sound_level(void);
void volume_down(void);
void update_volume(void);
void toggle_mute(void);
void update_user_mute(void);
void init_audio(void);
void store_autocolor_sound(void);

#ifdef NICAM
void init_nicam(void);
void auto_stereo_standard(void);
void auto_stereo_std_minusLL1(void);
void configure_NICAM_LL1(void);
unsigned char decide_mono_standard(void);
unsigned char decide_stereo_standard(void);

void inc_mono_sid(void);
void inc_stereo_sid(void);
void write_stereo_standard(void);
void force_mono_standard(void);
void force_stereo_standard(void);
void write_SWD_control(void);
void write_zweiton_SWD_control(void);

#endif

extern unsigned char stereo_std;
extern unsigned int read_status;
extern unsigned char mono_sid;
extern unsigned char stereo_sid;
extern unsigned int zweiton_stat;
#ifdef FM_WIDE

#define MAX_STD ((unsigned char)8) 
#else

#define MAX_STD ((unsigned char)7) 
#endif

#ifdef FM_WIDE 		
extern const unsigned char 	FM_MONO_WIDE_DATA[];     
#endif
#endif