timer.c File Reference

Timer Interface. More...

Include dependency graph for timer.c:

Functions
int	snd_timer_open (snd_timer_t **timer, const char *name, int mode)
	Opens a new connection to the timer interface.
int	snd_timer_open_lconf (snd_timer_t **timer, const char *name, int mode, snd_config_t *lconf)
	Opens a new connection to the timer interface using local configuration.
int	snd_timer_close (snd_timer_t *timer)
	close timer handle
const char *	snd_timer_name (snd_timer_t *timer)
	get identifier of timer handle
snd_timer_type_t	snd_timer_type (snd_timer_t *timer)
	get type of timer handle
int	snd_async_add_timer_handler (snd_async_handler_t **handler, snd_timer_t *timer, snd_async_callback_t callback, void *private_data)
	Add an async handler for a timer.
snd_timer_t *	snd_async_handler_get_timer (snd_async_handler_t *handler)
	Return timer handle related to an async handler.
int	snd_timer_poll_descriptors_count (snd_timer_t *timer)
	get count of poll descriptors for timer handle
int	snd_timer_poll_descriptors (snd_timer_t *timer, struct pollfd *pfds, unsigned int space)
	get poll descriptors
int	snd_timer_poll_descriptors_revents (snd_timer_t *timer, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
	get returned events from poll descriptors
int	snd_timer_nonblock (snd_timer_t *timer, int nonblock)
	set nonblock mode
size_t	snd_timer_info_sizeof ()
	get size of the snd_timer_info_t structure in bytes
int	snd_timer_info_malloc (snd_timer_info_t **info)
	allocate a new snd_timer_info_t structure
void	snd_timer_info_free (snd_timer_info_t *info)
	frees the snd_timer_info_t structure
void	snd_timer_info_copy (snd_timer_info_t *dst, const snd_timer_info_t *src)
	copy one snd_timer_info_t structure to another
int	snd_timer_info_is_slave (snd_timer_info_t *info)
	determine, if timer is slave
int	snd_timer_info_get_card (snd_timer_info_t *info)
	get timer card
const char *	snd_timer_info_get_id (snd_timer_info_t *info)
	get timer id
const char *	snd_timer_info_get_name (snd_timer_info_t *info)
	get timer name
long	snd_timer_info_get_resolution (snd_timer_info_t *info)
	get timer resolution in us
int	snd_timer_info (snd_timer_t *timer, snd_timer_info_t *info)
	get information about timer handle
size_t	snd_timer_params_sizeof ()
	get size of the snd_timer_params_t structure in bytes
int	snd_timer_params_malloc (snd_timer_params_t **params)
	allocate a new snd_timer_params_t structure
void	snd_timer_params_free (snd_timer_params_t *params)
	frees the snd_timer_params_t structure
void	snd_timer_params_copy (snd_timer_params_t *dst, const snd_timer_params_t *src)
	copy one snd_timer_params_t structure to another
int	snd_timer_params_set_auto_start (snd_timer_params_t *params, int auto_start)
	set timer auto start
int	snd_timer_params_get_auto_start (snd_timer_params_t *params)
	determine if timer has auto start flag
int	snd_timer_params_set_exclusive (snd_timer_params_t *params, int exclusive)
	set timer exclusive use
int	snd_timer_params_get_exclusive (snd_timer_params_t *params)
	determine if timer has exclusive flag
int	snd_timer_params_set_early_event (snd_timer_params_t *params, int early_event)
	set timer early event
int	snd_timer_params_get_early_event (snd_timer_params_t *params)
	determine if timer has early event flag
void	snd_timer_params_set_ticks (snd_timer_params_t *params, long ticks)
	set timer ticks
long	snd_timer_params_get_ticks (snd_timer_params_t *params)
	get timer ticks
void	snd_timer_params_set_queue_size (snd_timer_params_t *params, long queue_size)
	set timer queue size (32-1024)
long	snd_timer_params_get_queue_size (snd_timer_params_t *params)
	get queue size
void	snd_timer_params_set_filter (snd_timer_params_t *params, unsigned int filter)
	set timer event filter
unsigned int	snd_timer_params_get_filter (snd_timer_params_t *params)
	get timer event filter
int	snd_timer_params (snd_timer_t *timer, snd_timer_params_t *params)
	set parameters for timer handle
size_t	snd_timer_status_sizeof ()
	get size of the snd_timer_status_t structure in bytes
int	snd_timer_status_malloc (snd_timer_status_t **status)
	allocate a new snd_timer_status_t structure
void	snd_timer_status_free (snd_timer_status_t *status)
	frees the snd_timer_status_t structure
void	snd_timer_status_copy (snd_timer_status_t *dst, const snd_timer_status_t *src)
	copy one snd_timer_status_t structure to another
snd_htimestamp_t	snd_timer_status_get_timestamp (snd_timer_status_t *status)
	get timestamp
long	snd_timer_status_get_resolution (snd_timer_status_t *status)
	get resolution in us
long	snd_timer_status_get_lost (snd_timer_status_t *status)
	get master tick lost count
long	snd_timer_status_get_overrun (snd_timer_status_t *status)
	get overrun count
long	snd_timer_status_get_queue (snd_timer_status_t *status)
	get count of used queue elements
int	snd_timer_status (snd_timer_t *timer, snd_timer_status_t *status)
	get status from timer handle
int	snd_timer_start (snd_timer_t *timer)
	start the timer
int	snd_timer_stop (snd_timer_t *timer)
	stop the timer
int	snd_timer_continue (snd_timer_t *timer)
	continue the timer
ssize_t	snd_timer_read (snd_timer_t *timer, void *buffer, size_t size)
	read bytes using timer handle
long	snd_timer_info_get_ticks (snd_timer_info_t *info)
	(DEPRECATED) get maximum timer ticks

Detailed Description

Timer Interface.

Author

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

Date

1998-2001

Timer Interface is designed to access timers. See Timer interface page for more details.

Function Documentation

snd_timer_name()

const char * snd_timer_name

(

snd_timer_t *

timer

)

get identifier of timer handle

Parameters

timer

a timer handle

Returns

ascii identifier of timer handle

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

snd_timer_nonblock()

int snd_timer_nonblock	(	snd_timer_t *	timer,
		int	nonblock
	)

set nonblock mode

Parameters

timer	timer handle
nonblock	0 = block, 1 = nonblock mode

Returns

0 on success otherwise a negative error code

snd_timer_type()

snd_timer_type_t snd_timer_type

(

snd_timer_t *

timer

)

get type of timer handle

Parameters

timer

a timer handle

Returns

type of timer handle

Returns the type snd_timer_type_t of given timer handle.