sound.h

9200下的音频驱动

#ifndef _MXLSOUND_H_
#define _MXLSOUND_H_


#define FILE_SAMPLING_FREQ	44100 // in Hz


// Constant declarations used by I2S mode
#define SLOT_BY_FRAME	2
#define BITS_BY_SLOT	16
// IRQ level declaration
#define IRQ_LEVEL_I2S	5	


/*IOCTL COMMANDS */
#define     DAC_OFF             0x10
#define     MONO                  0x11
#define     STERO                  0x12
#define     LR_MUTE              0x20
#define     LEFT_MUTE	         0x21
#define     RIGHT_MUTE	  0x22
#define	    LEFT_FULL	          0x23
#define	    LEFT_LOW	          0x24
#define     RIGHT_FULL	   0x25
#define	    RIGHT_LOW	   0x26
#define		SOUND_DEC	   0x27
#define 	SOUND_INC	           0x28
#define 	SOUND_PAUSE	    0x29
#define 	SOUND_RESUME	    0x30
#define 	SOUND_STOP	    0x31
#define		LINEIN		    0x32
#define		MIC		           0x33
#define    REC                          0x34
#define    SOUND                    0x35
#define    MUTE                       0x36

                                                                                

                                                                                
//#define BUFSIZE (256*1024)
#define BUFSIZE (100*1000)
#define DMASIZE 56000
#define A9200_TXDMA 0 // tx channel
#define A9200_RXDMA 1 // rx channel
int a9200_isopen;
int a9200_txbusy,a9200_rxbusy;
int a9200_dmaing,a9200_rxdmaing;
unsigned int a9200_speed;
unsigned int a9200_stereo;
unsigned int a9200_bits;
unsigned int a9200_format;
unsigned long a9200_imrbit,a9200_rximrbit;
volatile unsigned int a9200_rxstart;
volatile unsigned int a9200_rxend;
unsigned char *a9200_buf;
volatile unsigned int a9200_dmastart,a9200_rxdmastart;
volatile unsigned int a9200_dmacount,a9200_rxdmacount;
volatile unsigned int a9200_appstart,a9200_rxappstart;
volatile unsigned int a9200_append,a9200_rxappend;
#endif