HwDep Interface (hardware dependent) More...

Include dependency graph for hwdep.c:

Functions
int	snd_hwdep_open (snd_hwdep_t *hwdep, const char name, int mode)
	Opens a new connection to the HwDep interface.

int	snd_hwdep_open_lconf (snd_hwdep_t *hwdep, const char name, int mode, snd_config_t *lconf)
	Opens a new connection to the HwDep interface using local configuration.

int	snd_hwdep_close (snd_hwdep_t *hwdep)
	close HwDep handle

const char *	snd_hwdep_name (snd_hwdep_t *hwdep)
	get identifier of HwDep handle

snd_hwdep_type_t	snd_hwdep_type (snd_hwdep_t *hwdep)
	get type of HwDep handle

int	snd_hwdep_poll_descriptors_count (snd_hwdep_t *hwdep)
	get count of poll descriptors for HwDep handle

int	snd_hwdep_poll_descriptors (snd_hwdep_t hwdep, struct pollfd pfds, unsigned int space)
	get poll descriptors

int	snd_hwdep_poll_descriptors_revents (snd_hwdep_t hwdep, struct pollfd pfds, unsigned int nfds, unsigned short *revents)
	get returned events from poll descriptors

int	snd_hwdep_nonblock (snd_hwdep_t *hwdep, int nonblock)
	set nonblock mode

size_t	snd_hwdep_info_sizeof ()
	get size of the snd_hwdep_info_t structure in bytes

int	snd_hwdep_info_malloc (snd_hwdep_info_t **info)
	allocate a new snd_hwdep_info_t structure

void	snd_hwdep_info_free (snd_hwdep_info_t *info)
	frees the snd_hwdep_info_t structure

void	snd_hwdep_info_copy (snd_hwdep_info_t dst, const snd_hwdep_info_t src)
	copy one snd_hwdep_info_t structure to another

int	snd_hwdep_info_get_card (const snd_hwdep_info_t *obj)
	get hwdep card number

unsigned int	snd_hwdep_info_get_device (const snd_hwdep_info_t *info)
	get hwdep device number

const char *	snd_hwdep_info_get_id (const snd_hwdep_info_t *obj)
	get hwdep driver identifier

const char *	snd_hwdep_info_get_name (const snd_hwdep_info_t *obj)
	get hwdep driver name

snd_hwdep_iface_t	snd_hwdep_info_get_iface (const snd_hwdep_info_t *obj)
	get hwdep protocol interface

void	snd_hwdep_info_set_device (snd_hwdep_info_t *obj, unsigned int val)
	set hwdep device number

int	snd_hwdep_info (snd_hwdep_t hwdep, snd_hwdep_info_t info)
	get information about HwDep handle

int	snd_hwdep_ioctl (snd_hwdep_t hwdep, unsigned int request, void arg)
	do hardware dependent ioctl

ssize_t	snd_hwdep_write (snd_hwdep_t hwdep, const void buffer, size_t size)
	write bytes using HwDep handle

ssize_t	snd_hwdep_read (snd_hwdep_t hwdep, void buffer, size_t size)
	read bytes using HwDep handle

int	snd_hwdep_dsp_status (snd_hwdep_t hwdep, snd_hwdep_dsp_status_t info)
	get the DSP status information

int	snd_hwdep_dsp_load (snd_hwdep_t hwdep, snd_hwdep_dsp_image_t block)
	load the DSP block

size_t	snd_hwdep_dsp_status_sizeof ()
	get size of the snd_hwdep_dsp_status_t structure in bytes

int	snd_hwdep_dsp_status_malloc (snd_hwdep_dsp_status_t **info)
	allocate a new snd_hwdep_dsp_status_t structure

void	snd_hwdep_dsp_status_free (snd_hwdep_dsp_status_t *info)
	frees the snd_hwdep_dsp_status_t structure

void	snd_hwdep_dsp_status_copy (snd_hwdep_dsp_status_t dst, const snd_hwdep_dsp_status_t src)
	copy one snd_hwdep_dsp_status_t structure to another

unsigned int	snd_hwdep_dsp_status_get_version (const snd_hwdep_dsp_status_t *obj)
	get the driver version of dsp loader

const char *	snd_hwdep_dsp_status_get_id (const snd_hwdep_dsp_status_t *obj)
	get the driver id of dsp loader

unsigned int	snd_hwdep_dsp_status_get_num_dsps (const snd_hwdep_dsp_status_t *obj)
	get number of dsp blocks

unsigned int	snd_hwdep_dsp_status_get_dsp_loaded (const snd_hwdep_dsp_status_t *info)
	get the bit flags of the loaded dsp blocks

unsigned int	snd_hwdep_dsp_status_get_chip_ready (const snd_hwdep_dsp_status_t *obj)
	get the chip status of dsp loader

size_t	snd_hwdep_dsp_image_sizeof ()
	get size of the snd_hwdep_dsp_image_t structure in bytes

int	snd_hwdep_dsp_image_malloc (snd_hwdep_dsp_image_t **info)
	allocate a new snd_hwdep_dsp_image_t structure

void	snd_hwdep_dsp_image_free (snd_hwdep_dsp_image_t *info)
	frees the snd_hwdep_dsp_image_t structure

void	snd_hwdep_dsp_image_copy (snd_hwdep_dsp_image_t dst, const snd_hwdep_dsp_image_t src)
	copy one snd_hwdep_dsp_image_t structure to another

unsigned int	snd_hwdep_dsp_image_get_index (const snd_hwdep_dsp_image_t *obj)
	get the DSP block index

const char *	snd_hwdep_dsp_image_get_name (const snd_hwdep_dsp_image_t *obj)
	get the name of the DSP block

size_t	snd_hwdep_dsp_image_get_length (const snd_hwdep_dsp_image_t *obj)
	get the length of the DSP block

const void *	snd_hwdep_dsp_image_get_image (const snd_hwdep_dsp_image_t *obj)
	get the image pointer of the DSP block

void	snd_hwdep_dsp_image_set_index (snd_hwdep_dsp_image_t *obj, unsigned int index)
	set the DSP block index

void	snd_hwdep_dsp_image_set_name (snd_hwdep_dsp_image_t obj, const char name)
	set the name of the DSP block

void	snd_hwdep_dsp_image_set_length (snd_hwdep_dsp_image_t *obj, size_t length)
	set the DSP block length

void	snd_hwdep_dsp_image_set_image (snd_hwdep_dsp_image_t obj, void image)
	set the DSP block image pointer

Detailed Description

HwDep Interface (hardware dependent)

Author: Jaroslav Kysela perex.nosp@m.@per.nosp@m.ex.cz

Date: 2000-2001

HwDep (hardware dependent) Interface is designed for individual hardware access. This interface does not cover any API specification.

Function Documentation

◆ snd_hwdep_name()

const char * snd_hwdep_name ( snd_hwdep_t * hwdep )

get identifier of HwDep handle

Parameters

hwdep a Hwdep handle

Returns: ascii identifier of HwDep handle

Returns the ASCII identifier of given HwDep handle. It's the same identifier specified in snd_hwdep_open().

◆ snd_hwdep_open_lconf()

int snd_hwdep_open_lconf	(	snd_hwdep_t **	hwdep,
		const char *	name,
		int	mode,
		snd_config_t *	lconf
	)

Opens a new connection to the HwDep interface using local configuration.

Parameters

hwdep	Returned handle (NULL if not wanted)
name	ASCII identifier of the HwDep handle
mode	Open mode
lconf	The local configuration tree

Returns: 0 on success otherwise a negative error code

Opens a new connection to the HwDep interface specified with an ASCII identifier and mode.

◆ snd_hwdep_type()

snd_hwdep_type_t snd_hwdep_type ( snd_hwdep_t * hwdep )

get type of HwDep handle

Parameters

hwdep a HwDep handle

Returns: type of HwDep handle

Returns the type snd_hwdep_type_t of given HwDep handle.

Functions

Detailed Description

Function Documentation

◆ snd_hwdep_name()

◆ snd_hwdep_open_lconf()

◆ snd_hwdep_type()