sample_rate_converter.h

Minix比较全的源码

#ifndef SRC_H
#define SRC_H

#include "es1371.h"
#include "wait.h"
#include "pci_helper.h"

_PROTOTYPE( int src_init, (DEV_STRUCT * DSP) );
_PROTOTYPE( void src_set_rate, (DEV_STRUCT * DSP, char src_base, u16_t rate) );

#define SRC_SYNTH_BASE      0x70
#define SRC_DAC_BASE        0x74
#define SRC_ADC_BASE        0x78

#define SRC_BUSY_BIT        23

#define SRC_RAM_WE		0x01000000
#define SRC_RAM_BUSY	0x00800000
#define SRC_DISABLE		0x00400000
#define DIS_P1			0x00200000
#define DIS_P2			0x00100000
#define DIS_REC			0x00080000

#define SRC_CTLMASK		(DIS_REC|DIS_P2|DIS_P1|SRC_DISABLE)

#endif /* SRC_H */