audio.h

C语言编写的监控中心终端程序。基于GPRS上传收发数据功能

#ifndef	AUDIO_H
#define AUDIO_H

int			init_audio(void);
void			au_main(void);
void			mp3_main(void);

enum {
    AUD_CMD_VOL_L		= 0x01,		/* left-channel-vol 0-255	*/
    AUD_CMD_VOL_R,				/* right-channel-vol 0-255	*/
    AUD_CMD_CHANNEL		= 0x10,		/* channel mask			*/
    AUD_CMD_EFFECT,
    AUD_CMD_KEY					/* key-shift ctrl in half-keys	*/
};

/*
 **	Output channel control.
 */
#define	AUD_CHN_LEFT		(0x01 << 0)
#define	AUD_CHN_RIGHT		(0x01 << 1)
#define	AUD_CHN_LS		(0x01 << 2)
#define	AUD_CHN_RS		(0x01 << 3)
#define	AUD_CHN_CENTER		(0x01 << 4)
#define	AUD_CHN_LFE		(0x01 << 5)

/*
 **	Spatial effect
 */
#define	AUD_EFF_NONE		(0)
#define	AUD_EFF_HALL		(1)
#define	AUD_EFF_PUB		(2)
#define	AUD_EFF_		(3)

int			ctl_audio(UINT32 cmd, UINT32 param);

#endif	AUDIO_H