Definitions for using the Sound Input Peripheral. More...

#include <sys/cdefs.h>
#include <sys/types.h>
#include <dc/maple.h>

Data Structures
struct	sip_state_t
	SIP status structure. More...

Macros
#define	SIP_SUBCOMMAND_GET_SAMPLES 0x01
	Get recorded samples from the microphone device.

#define	SIP_SUBCOMMAND_BASIC_CTRL 0x02
	Start and stop sampling.

#define	SIP_MIN_GAIN 0x00
	Minimum microphone gain.

#define	SIP_DEFAULT_GAIN 0x0F
	Default microphone gain.

#define	SIP_MAX_GAIN 0x1F
	Maximum microphone gain.

#define	SIP_SAMPLE_16BIT_SIGNED 0x00
	Record 16-bit signed integer samples.

#define	SIP_SAMPLE_8BIT_ULAW 0x01
	Record 8-bit ulaw samples.

#define	SIP_SAMPLE_11KHZ 0x00
	Record samples at 11.025kHz.

#define	SIP_SAMPLE_8KHZ 0x01
	Record samples at 8kHz.

Typedefs
typedef void(*	sip_sample_cb) (maple_device_t dev, uint8 samples, size_t len)
	Type for a microphone sample callback.

Functions
int	sip_set_gain (maple_device_t *dev, unsigned int g)
	Set the microphone's gain value.

int	sip_set_sample_type (maple_device_t *dev, unsigned int type)
	Set the sample type to be recorded by the microphone.

int	sip_set_frequency (maple_device_t *dev, unsigned int freq)
	Set the sample frequency to be recorded by the microphone.

int	sip_start_sampling (maple_device_t *dev, sip_sample_cb cb, int block)
	Start sampling on a microphone.

int	sip_stop_sampling (maple_device_t *dev, int block)
	Stop sampling on a microphone.

Detailed Description

Definitions for using the Sound Input Peripheral.

This file contains the definitions needed to access the Maple microphone type device (the Seaman mic). Many thanks go out to ZeZu who pointed me toward what some of the commands actually do in the original version of this driver.

As a note, the device itself is actually referred to by the system as the Sound Input Peripheral, so hence why this driver is named as it is.

Author: Lawrence Sebald

Data Structures

Macros

Typedefs

Functions

Detailed Description