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/* Defines for Soundblaster and Soundblaster Pro IO address */
#define SB_BASE sb_addr                     /* Use these values as offsets */
#define LEFT_FM_STATUS      SB_BASE+0x00    /* Pro only */
#define LEFT_FM_ADDRESS     SB_BASE+0x00    /* Pro only */
#define LEFT_FM_DATA        SB_BASE+0x01    /* Pro only */
#define RIGHT_FM_STATUS     SB_BASE+0x02    /* Pro only */
#define RIGHT_FM_ADDRESS    SB_BASE+0x02    /* Pro only */
#define RIGHT_FM_DATA       SB_BASE+0x03    /* Pro only */
#define MIXER_ADDRESS       SB_BASE+0x04    /* Pro only */
#define MIXER_DATA          SB_BASE+0x05    /* Pro only */
#define DSP_RESET           SB_BASE+0x06
#define FM_STATUS           SB_BASE+0x08
#define FM_ADDRESS          SB_BASE+0x08
#define FM_DATA             SB_BASE+0x09
#define DSP_READ_DATA       SB_BASE+0x0A
#define DSP_WRITE_DATA      SB_BASE+0x0C
#define DSP_WRITE_STATUS    SB_BASE+0x0C
#define DSP_DATA_AVAIL      SB_BASE+0x0E
#define CD_ROM_DATA         SB_BASE+0x10    /* Pro only */
#define CD_ROM_STATUS       SB_BASE+0x11    /* Pro only */
#define CD_ROM_RESET        SB_BASE+0x12    /* Pro only */
#define CD_ROM_ENABLE       SB_BASE+0x13    /* Pro only */

#define ADLIB_FM_STATUS     0x388
#define ADLIB_FM_ADDRESS    0x388
#define ADLIB_FM_DATA       0x389

/* Defines for 8237 DMA Controller IO addresses */
#define DMA         0x00
#define CH0_BASE    DMA+0
#define CH0_COUNT   DMA+1
#define CH1_BASE    DMA+2
#define CH1_COUNT   DMA+3
#define CH2_BASE    DMA+4
#define CH2_COUNT   DMA+5
#define CH3_BASE    DMA+6
#define CH3_COUNT   DMA+7
#define DMA_STATUS  DMA+8
#define DMA_CMD     DMA+8
#define DMA_REQUEST DMA+9
#define DMA_MASK    DMA+10
#define DMA_MODE    DMA+11
#define DMA_FF      DMA+12
#define DMA_TMP     DMA+13
#define DMA_CLEAR   DMA+13
#define DMA_CLRMSK  DMA+14
#define DMA_WRMSK   DMA+15
#define DMAPAGE     0x80


/* SB16 flags */

#define SB16_FIFO   0x01
#define SB16_AI     0x02
#define SB16_SIGNED 0x04
#define SB16_STEREO 0x08


/* Mixer input/output source definitions by me */

#define MIXER_MASTER 1
#define MIXER_VOICE  2
#define MIXER_FM 4
#define MIXER_CD 8
#define MIXER_LINE 16
#define MIXER_MIC 32

#define ANFI_OFF 0x20
#define ANFI_LOW 0x00
#define ANFI_HIGH 0x08

#define DNFI_OFF 0x20
#define DNFI_ON 0


#define NOAUTOINIT 0
#define AUTOINIT 1

#define NORMALSPEED 0
#define HIGHSPEED 1

#define FROM_CARD  0
#define TO_CARD 1

#define BUFFERS 2


struct WAVhdr {
	char RIFF_tag[4];
	long length;
	char WAVE_tag[4];
	char fmt_tag[4];
	long chunk_len;
	int format;
	int num_channels;
	long sample_rate;
	long avg_sample_rate;
	int align;
	int bits_per_sample;
	char data_tag[4];
	long data_length;
};


extern int sb_addr, sb_dma, sb_irq;
extern int block_done;

/*
 *  External function references
 */

extern int dma_setup(int Channel, char far *Buffer, unsigned Length,
		     int Dir, int AutoInit);
extern void dma_reset(int Channel);
extern int dma_done(int Channel);

extern int dma_errno;
extern char *dma_errlist[];

extern void set_SB_address(int base);
extern void dsp_voice(int);
extern int dsp_reset(void);

extern void dsp_time(int);
extern void dsp_dma_prepare(int Dir, int Length, int AutoInit, int HighSpeed);
extern void dsp_dma_halt(void);
extern void dsp_dma_continue(void);
extern void dsp_dma_exit_autoinit(void);

extern void dsp16_samprate(int iomode, unsigned int rate);
extern void dsp16_dma_prepare(int Dir, int Length, int flags); 
extern void dsp16_dma_halt(void);
extern void dsp16_dma_continue(void);
extern void dsp16_dma_exit_autoinit(void);

extern void far *aligned_malloc(long len);
extern void aligned_free(void far *ptr);


/* High-level stuff in sb_user.c */

extern int sb_addr, sb_dma, sb_irq;
extern int block_done;

extern int sb_init(int sb_addr, int sb_irq, int sb_dma);
extern void sb_exit(void);
extern void sb_set_samprate(long sampfreq);
extern void sb_record(void far *buffer, unsigned int buf_size, unsigned int block_size, int autoinit);
extern void sb_play(void far *buffer, unsigned int buf_size, unsigned int block_size, int autoinit);
extern void sb_stop(void);

extern void sb_set_volume(int source, int level);
extern int sb_get_volume(int source);
extern void sb_set_input_source(int source);
extern void sb_set_input_filter(int state);
extern void sb_set_output_filter(int state);


extern int sb16_init(int sb_addr, int sb_irq, int sb_dma);
extern void sb16_exit(void);
extern void sb16_set_samprate(int iomode, unsigned int sampfreq);
extern void sb16_record(void far *buffer, unsigned int buf_size, 
		unsigned int block_size, int flags);
extern void sb16_play(void far *buffer, unsigned int buf_size, 
		unsigned int block_size, int flags);
extern void sb16_stop(void);

extern void sb16_set_volume(int source, int level);
extern int sb16_get_volume(int source);
extern void sb16_set_input_source(int source);
extern void sb16_set_input_filter(int state);
extern void sb16_set_output_filter(int state);
.

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