playsd.h

一个两碟控制的VCD的代码,两碟之间的转动及连续播放,已大量生产的CODE.

/* SCCSID @(#)playsd.h	1.9 1/13/98 */ 

#include <setjmp.h>

#ifndef PLAYSD_H
#define PLAYSD_H
/*
#define AU		1
#define WAVE	2
#define DATA	3
*/

#define WAVE	0x10000
#define AU	0x40000	
#define PCM	0x20000	/* April 22 */
#define DATA	0x30000

typedef struct {
	unsigned int		nchannel;
	unsigned int		samp_width;
	unsigned int		samp_rate;
} SoundParam;

struct _SoundData;

void sd_callback(struct _SoundData *data);

typedef void (*SoundDataCallBack) (struct _SoundData *data);
typedef struct _SoundData {
	int			sd_type;
	unsigned char		*sd_addr;
	int			sd_size;
	SoundParam		*sd_param;
	SoundDataCallBack	sd_callback;
} SoundData;

int Audio_PlaySound(SoundData *data);
int Audio_GetStatus(void);
int Audio_StopPlay(void);

#include "../driver/common.h"

#ifndef EXTERN
#ifdef MAIN
#define EXTERN
#else
#define EXTERN extern
#endif
#endif

#define WAVBUFSIZE 20480
GBLDEF_0(int WavBuf0Begin, 0);
GBLDEF_0(int WavBuf1Begin, 0);
GBLDEF_0(int wavbuf0size, 0);
GBLDEF_0(int wavbuf1size, 0);
GBLDEF_0(int wav_wrptr, 0);
GBLDEF_0(unsigned int au_repeat, 0);
GBLDEF_0(jmp_buf vcd30_power_buf,{0});

EXTERN int wavelen,WAV_headlen;
EXTERN volatile int PCM_rd_ptr, PCM_srcsize;
EXTERN volatile int PCM_xfersize;
EXTERN volatile int WAV_data_ready;
EXTERN volatile int PCM_ampf;

#endif