Macros
#define	SND_SEQ_QUEUE_DIRECT 253
#define	snd_seq_queue_info_alloca(ptr) __snd_alloca(ptr, snd_seq_queue_info)
#define	snd_seq_queue_status_alloca(ptr) __snd_alloca(ptr, snd_seq_queue_status)
#define	snd_seq_queue_tempo_alloca(ptr) __snd_alloca(ptr, snd_seq_queue_tempo)
#define	snd_seq_queue_timer_alloca(ptr) __snd_alloca(ptr, snd_seq_queue_timer)

Typedefs
typedef struct _snd_seq_queue_info	snd_seq_queue_info_t
typedef struct _snd_seq_queue_status	snd_seq_queue_status_t
typedef struct _snd_seq_queue_tempo	snd_seq_queue_tempo_t
typedef struct _snd_seq_queue_timer	snd_seq_queue_timer_t

Enumerations
enum	snd_seq_queue_timer_type_t { SND_SEQ_TIMER_ALSA = 0, SND_SEQ_TIMER_MIDI_CLOCK = 1, SND_SEQ_TIMER_MIDI_TICK = 2 }

Functions
size_t	snd_seq_queue_info_sizeof (void)
	get size of snd_seq_queue_info_t
int	snd_seq_queue_info_malloc (snd_seq_queue_info_t **ptr)
	allocate an empty snd_seq_queue_info_t using standard malloc
void	snd_seq_queue_info_free (snd_seq_queue_info_t *ptr)
	frees a previously allocated snd_seq_queue_info_t
void	snd_seq_queue_info_copy (snd_seq_queue_info_t dst, const snd_seq_queue_info_t src)
	copy one snd_seq_queue_info_t to another
int	snd_seq_queue_info_get_queue (const snd_seq_queue_info_t *info)
	Get the queue id of a queue_info container.
const char *	snd_seq_queue_info_get_name (const snd_seq_queue_info_t *info)
	Get the name of a queue_info container.
int	snd_seq_queue_info_get_owner (const snd_seq_queue_info_t *info)
	Get the owner client id of a queue_info container.
int	snd_seq_queue_info_get_locked (const snd_seq_queue_info_t *info)
	Get the lock status of a queue_info container.
unsigned int	snd_seq_queue_info_get_flags (const snd_seq_queue_info_t *info)
	Get the conditional bit flags of a queue_info container.
void	snd_seq_queue_info_set_name (snd_seq_queue_info_t info, const char name)
	Set the name of a queue_info container.
void	snd_seq_queue_info_set_owner (snd_seq_queue_info_t *info, int owner)
	Set the owner client id of a queue_info container.
void	snd_seq_queue_info_set_locked (snd_seq_queue_info_t *info, int locked)
	Set the lock status of a queue_info container.
void	snd_seq_queue_info_set_flags (snd_seq_queue_info_t *info, unsigned int flags)
	Set the conditional bit flags of a queue_info container.
int	snd_seq_create_queue (snd_seq_t seq, snd_seq_queue_info_t info)
	create a queue
int	snd_seq_alloc_named_queue (snd_seq_t seq, const char name)
	allocate a queue with the specified name
int	snd_seq_alloc_queue (snd_seq_t *handle)
	allocate a queue
int	snd_seq_free_queue (snd_seq_t *handle, int q)
	delete the specified queue
int	snd_seq_get_queue_info (snd_seq_t seq, int q, snd_seq_queue_info_t info)
	obtain queue attributes
int	snd_seq_set_queue_info (snd_seq_t seq, int q, snd_seq_queue_info_t info)
	change the queue attributes
int	snd_seq_query_named_queue (snd_seq_t seq, const char name)
	query the matching queue with the specified name
int	snd_seq_get_queue_usage (snd_seq_t *handle, int q)
	Get the queue usage flag to the client.
int	snd_seq_set_queue_usage (snd_seq_t *handle, int q, int used)
	Set the queue usage flag to the client.
size_t	snd_seq_queue_status_sizeof (void)
	get size of snd_seq_queue_status_t
int	snd_seq_queue_status_malloc (snd_seq_queue_status_t **ptr)
	allocate an empty snd_seq_queue_status_t using standard malloc
void	snd_seq_queue_status_free (snd_seq_queue_status_t *ptr)
	frees a previously allocated snd_seq_queue_status_t
void	snd_seq_queue_status_copy (snd_seq_queue_status_t dst, const snd_seq_queue_status_t src)
	copy one snd_seq_queue_status_t to another
int	snd_seq_queue_status_get_queue (const snd_seq_queue_status_t *info)
	Get the queue id of a queue_status container.
int	snd_seq_queue_status_get_events (const snd_seq_queue_status_t *info)
	Get the number of events of a queue_status container.
snd_seq_tick_time_t	snd_seq_queue_status_get_tick_time (const snd_seq_queue_status_t *info)
	Get the tick time of a queue_status container.
const snd_seq_real_time_t *	snd_seq_queue_status_get_real_time (const snd_seq_queue_status_t *info)
	Get the real time of a queue_status container.
unsigned int	snd_seq_queue_status_get_status (const snd_seq_queue_status_t *info)
	Get the running status bits of a queue_status container.
int	snd_seq_get_queue_status (snd_seq_t handle, int q, snd_seq_queue_status_t status)
	obtain the running state of the queue
size_t	snd_seq_queue_tempo_sizeof (void)
	get size of snd_seq_queue_tempo_t
int	snd_seq_queue_tempo_malloc (snd_seq_queue_tempo_t **ptr)
	allocate an empty snd_seq_queue_tempo_t using standard malloc
void	snd_seq_queue_tempo_free (snd_seq_queue_tempo_t *ptr)
	frees a previously allocated snd_seq_queue_tempo_t
void	snd_seq_queue_tempo_copy (snd_seq_queue_tempo_t dst, const snd_seq_queue_tempo_t src)
	copy one snd_seq_queue_tempo_t to another
int	snd_seq_queue_tempo_get_queue (const snd_seq_queue_tempo_t *info)
	Get the queue id of a queue_status container.
unsigned int	snd_seq_queue_tempo_get_tempo (const snd_seq_queue_tempo_t *info)
	Get the tempo of a queue_status container.
int	snd_seq_queue_tempo_get_ppq (const snd_seq_queue_tempo_t *info)
	Get the ppq of a queue_status container.
unsigned int	snd_seq_queue_tempo_get_skew (const snd_seq_queue_tempo_t *info)
	Get the timer skew value of a queue_status container.
unsigned int	snd_seq_queue_tempo_get_skew_base (const snd_seq_queue_tempo_t *info)
	Get the timer skew base value of a queue_status container.
void	snd_seq_queue_tempo_set_tempo (snd_seq_queue_tempo_t *info, unsigned int tempo)
	Set the tempo of a queue_status container.
void	snd_seq_queue_tempo_set_ppq (snd_seq_queue_tempo_t *info, int ppq)
	Set the ppq of a queue_status container.
void	snd_seq_queue_tempo_set_skew (snd_seq_queue_tempo_t *info, unsigned int skew)
	Set the timer skew value of a queue_status container.
void	snd_seq_queue_tempo_set_skew_base (snd_seq_queue_tempo_t *info, unsigned int base)
	Set the timer skew base value of a queue_status container.
int	snd_seq_get_queue_tempo (snd_seq_t handle, int q, snd_seq_queue_tempo_t tempo)
	obtain the current tempo of the queue
int	snd_seq_set_queue_tempo (snd_seq_t handle, int q, snd_seq_queue_tempo_t tempo)
	set the tempo of the queue
size_t	snd_seq_queue_timer_sizeof (void)
	get size of snd_seq_queue_timer_t
int	snd_seq_queue_timer_malloc (snd_seq_queue_timer_t **ptr)
	allocate an empty snd_seq_queue_timer_t using standard malloc
void	snd_seq_queue_timer_free (snd_seq_queue_timer_t *ptr)
	frees a previously allocated snd_seq_queue_timer_t
void	snd_seq_queue_timer_copy (snd_seq_queue_timer_t dst, const snd_seq_queue_timer_t src)
	copy one snd_seq_queue_timer_t to another
int	snd_seq_queue_timer_get_queue (const snd_seq_queue_timer_t *info)
	Get the queue id of a queue_timer container.
snd_seq_queue_timer_type_t	snd_seq_queue_timer_get_type (const snd_seq_queue_timer_t *info)
	Get the timer type of a queue_timer container.
const snd_timer_id_t *	snd_seq_queue_timer_get_id (const snd_seq_queue_timer_t *info)
	Get the timer id of a queue_timer container.
unsigned int	snd_seq_queue_timer_get_resolution (const snd_seq_queue_timer_t *info)
	Get the timer resolution of a queue_timer container.
void	snd_seq_queue_timer_set_type (snd_seq_queue_timer_t *info, snd_seq_queue_timer_type_t type)
	Set the timer type of a queue_timer container.
void	snd_seq_queue_timer_set_id (snd_seq_queue_timer_t info, const snd_timer_id_t id)
	Set the timer id of a queue_timer container.
void	snd_seq_queue_timer_set_resolution (snd_seq_queue_timer_t *info, unsigned int resolution)
	Set the timer resolution of a queue_timer container.
int	snd_seq_get_queue_timer (snd_seq_t handle, int q, snd_seq_queue_timer_t timer)
	obtain the queue timer information
int	snd_seq_set_queue_timer (snd_seq_t handle, int q, snd_seq_queue_timer_t timer)
	set the queue timer information

Detailed Description

Sequencer Queue Interface

Macro Definition Documentation

#define SND_SEQ_QUEUE_DIRECT 253

special queue ids direct dispatch

#define snd_seq_queue_info_alloca ( ptr ) __snd_alloca(ptr, snd_seq_queue_info)

allocate a snd_seq_queue_info_t container on stack

#define snd_seq_queue_status_alloca ( ptr ) __snd_alloca(ptr, snd_seq_queue_status)

allocate a snd_seq_queue_status_t container on stack

#define snd_seq_queue_tempo_alloca ( ptr ) __snd_alloca(ptr, snd_seq_queue_tempo)

allocate a snd_seq_queue_tempo_t container on stack

#define snd_seq_queue_timer_alloca ( ptr ) __snd_alloca(ptr, snd_seq_queue_timer)

allocate a snd_seq_queue_timer_t container on stack

Typedef Documentation

typedef struct _snd_seq_queue_info snd_seq_queue_info_t

queue information container

typedef struct _snd_seq_queue_status snd_seq_queue_status_t

queue status container

typedef struct _snd_seq_queue_tempo snd_seq_queue_tempo_t

queue tempo container

typedef struct _snd_seq_queue_timer snd_seq_queue_timer_t

queue timer information container

Enumeration Type Documentation

enum snd_seq_queue_timer_type_t

sequencer timer sources

Function Documentation

int snd_seq_alloc_named_queue	(	snd_seq_t *	seq,
		const char *	name
	)

allocate a queue with the specified name

Parameters

seq	sequencer handle
name	the name of the new queue

Returns: the queue id (zero or positive) on success otherwise a negative error code

See Also: snd_seq_alloc_queue()

int snd_seq_alloc_queue ( snd_seq_t * seq )

allocate a queue

Parameters

seq	sequencer handle

Returns: the queue id (zero or positive) on success otherwise a negative error code

See Also: snd_seq_alloc_named_queue(), snd_seq_create_queue(), snd_seq_free_queue(), snd_seq_get_queue_info()

int snd_seq_create_queue	(	snd_seq_t *	seq,
		snd_seq_queue_info_t *	info
	)

create a queue

Parameters

seq	sequencer handle
info	queue information to initialize

Returns: the queue id (zero or positive) on success otherwise a negative error code

See Also: snd_seq_alloc_queue()

int snd_seq_free_queue	(	snd_seq_t *	seq,
		int	q
	)

delete the specified queue

Parameters

seq	sequencer handle
q	queue id to delete

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_alloc_queue()

int snd_seq_get_queue_info	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_info_t *	info
	)

obtain queue attributes

Parameters

seq	sequencer handle
q	queue id to query
info	information returned

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_alloc_queue(), snd_seq_set_queue_info(), snd_seq_query_named_queue()

int snd_seq_get_queue_status	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_status_t *	status
	)

obtain the running state of the queue

Parameters

seq	sequencer handle
q	queue id to query
status	pointer to store the current status

Returns: 0 on success otherwise a negative error code

Obtains the running state of the specified queue q.

int snd_seq_get_queue_tempo	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_tempo_t *	tempo
	)

obtain the current tempo of the queue

Parameters

seq	sequencer handle
q	queue id to be queried
tempo	pointer to store the current tempo

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_set_queue_tempo()

int snd_seq_get_queue_timer	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_timer_t *	timer
	)

obtain the queue timer information

Parameters

seq	sequencer handle
q	queue id to query
timer	pointer to store the timer information

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_set_queue_timer()

int snd_seq_get_queue_usage	(	snd_seq_t *	seq,
		int	q
	)

Get the queue usage flag to the client.

Parameters

seq	sequencer handle
q	queue id

Returns: 1 = client is allowed to access the queue, 0 = not allowed, otherwise a negative error code

See Also: snd_seq_get_queue_info(), snd_seq_set_queue_usage()

int snd_seq_query_named_queue	(	snd_seq_t *	seq,
		const char *	name
	)

query the matching queue with the specified name

Parameters

seq	sequencer handle
name	the name string to query

Returns: the queue id if found or negative error code

Searches the matching queue with the specified name string.

See Also: snd_seq_get_queue_info()

void snd_seq_queue_info_copy	(	snd_seq_queue_info_t *	dst,
		const snd_seq_queue_info_t *	src
	)

copy one snd_seq_queue_info_t to another

Parameters

dst	pointer to destination
src	pointer to source

void snd_seq_queue_info_free ( snd_seq_queue_info_t * obj )

frees a previously allocated snd_seq_queue_info_t

Parameters

obj	pointer to object to free

unsigned int snd_seq_queue_info_get_flags ( const snd_seq_queue_info_t * info )

Get the conditional bit flags of a queue_info container.

Parameters

info	queue_info container

Returns: conditional bit flags

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_set_flags()

int snd_seq_queue_info_get_locked ( const snd_seq_queue_info_t * info )

Get the lock status of a queue_info container.

Parameters

info	queue_info container

Returns: lock status — non-zero = locked

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_set_locked()

const char* snd_seq_queue_info_get_name ( const snd_seq_queue_info_t * info )

Get the name of a queue_info container.

Parameters

info	queue_info container

Returns: name string

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_set_name()

int snd_seq_queue_info_get_owner ( const snd_seq_queue_info_t * info )

Get the owner client id of a queue_info container.

Parameters

info	queue_info container

Returns: owner client id

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_set_owner()

int snd_seq_queue_info_get_queue ( const snd_seq_queue_info_t * info )

Get the queue id of a queue_info container.

Parameters

info	queue_info container

Returns: queue id

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_set_queue()

int snd_seq_queue_info_malloc ( snd_seq_queue_info_t ** ptr )

allocate an empty snd_seq_queue_info_t using standard malloc

Parameters

ptr	returned pointer

Returns: 0 on success otherwise negative error code

void snd_seq_queue_info_set_flags	(	snd_seq_queue_info_t *	info,
		unsigned int	flags
	)

Set the conditional bit flags of a queue_info container.

Parameters

info	queue_info container
flags	conditional bit flags

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_get_flags()

void snd_seq_queue_info_set_locked	(	snd_seq_queue_info_t *	info,
		int	locked
	)

Set the lock status of a queue_info container.

Parameters

info	queue_info container
locked	lock status

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_get_locked()

void snd_seq_queue_info_set_name	(	snd_seq_queue_info_t *	info,
		const char *	name
	)

Set the name of a queue_info container.

Parameters

info	queue_info container
name	name string

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_get_name()

void snd_seq_queue_info_set_owner	(	snd_seq_queue_info_t *	info,
		int	owner
	)

Set the owner client id of a queue_info container.

Parameters

info	queue_info container
owner	client id

See Also: snd_seq_get_queue_info(), snd_seq_queue_info_get_owner()

size_t snd_seq_queue_info_sizeof ( void )

get size of snd_seq_queue_info_t

Returns: size in bytes

void snd_seq_queue_status_copy	(	snd_seq_queue_status_t *	dst,
		const snd_seq_queue_status_t *	src
	)

copy one snd_seq_queue_status_t to another

Parameters

dst	pointer to destination
src	pointer to source

void snd_seq_queue_status_free ( snd_seq_queue_status_t * obj )

frees a previously allocated snd_seq_queue_status_t

Parameters

obj	pointer to object to free

int snd_seq_queue_status_get_events ( const snd_seq_queue_status_t * info )

Get the number of events of a queue_status container.

Parameters

info	queue_status container

Returns: number of events

See Also: snd_seq_get_queue_status()

int snd_seq_queue_status_get_queue ( const snd_seq_queue_status_t * info )

Get the queue id of a queue_status container.

Parameters

info	queue_status container

Returns: queue id

See Also: snd_seq_get_queue_status()

const snd_seq_real_time_t* snd_seq_queue_status_get_real_time ( const snd_seq_queue_status_t * info )

Get the real time of a queue_status container.

Parameters

info	queue_status container

See Also: snd_seq_get_queue_status()

unsigned int snd_seq_queue_status_get_status ( const snd_seq_queue_status_t * info )

Get the running status bits of a queue_status container.

Parameters

info	queue_status container

Returns: running status bits

See Also: snd_seq_get_queue_status()

snd_seq_tick_time_t snd_seq_queue_status_get_tick_time ( const snd_seq_queue_status_t * info )

Get the tick time of a queue_status container.

Parameters

info	queue_status container

Returns: tick time

See Also: snd_seq_get_queue_status()

int snd_seq_queue_status_malloc ( snd_seq_queue_status_t ** ptr )

allocate an empty snd_seq_queue_status_t using standard malloc

Parameters

ptr	returned pointer

Returns: 0 on success otherwise negative error code

size_t snd_seq_queue_status_sizeof ( void )

get size of snd_seq_queue_status_t

Returns: size in bytes

void snd_seq_queue_tempo_copy	(	snd_seq_queue_tempo_t *	dst,
		const snd_seq_queue_tempo_t *	src
	)

copy one snd_seq_queue_tempo_t to another

Parameters

dst	pointer to destination
src	pointer to source

void snd_seq_queue_tempo_free ( snd_seq_queue_tempo_t * obj )

frees a previously allocated snd_seq_queue_tempo_t

Parameters

obj	pointer to object to free

int snd_seq_queue_tempo_get_ppq ( const snd_seq_queue_tempo_t * info )

Get the ppq of a queue_status container.

Parameters

info	queue_status container

Returns: ppq value

See Also: snd_seq_get_queue_tempo()

int snd_seq_queue_tempo_get_queue ( const snd_seq_queue_tempo_t * info )

Get the queue id of a queue_status container.

Parameters

info	queue_status container

Returns: queue id

See Also: snd_seq_get_queue_tempo()

unsigned int snd_seq_queue_tempo_get_skew ( const snd_seq_queue_tempo_t * info )

Get the timer skew value of a queue_status container.

Parameters

info	queue_status container

Returns: timer skew value

See Also: snd_seq_get_queue_tempo()

unsigned int snd_seq_queue_tempo_get_skew_base ( const snd_seq_queue_tempo_t * info )

Get the timer skew base value of a queue_status container.

Parameters

info	queue_status container

Returns: timer skew base value

See Also: snd_seq_get_queue_tempo()

unsigned int snd_seq_queue_tempo_get_tempo ( const snd_seq_queue_tempo_t * info )

Get the tempo of a queue_status container.

Parameters

info	queue_status container

Returns: tempo value

See Also: snd_seq_get_queue_tempo()

int snd_seq_queue_tempo_malloc ( snd_seq_queue_tempo_t ** ptr )

allocate an empty snd_seq_queue_tempo_t using standard malloc

Parameters

ptr	returned pointer

Returns: 0 on success otherwise negative error code

void snd_seq_queue_tempo_set_ppq	(	snd_seq_queue_tempo_t *	info,
		int	ppq
	)

Set the ppq of a queue_status container.

Parameters

info	queue_status container
ppq	ppq value

See Also: snd_seq_get_queue_tempo()

void snd_seq_queue_tempo_set_skew	(	snd_seq_queue_tempo_t *	info,
		unsigned int	skew
	)

Set the timer skew value of a queue_status container.

Parameters

info	queue_status container
skew	timer skew value

The skew of timer is calculated as skew / base. For example, to play with double speed, pass base * 2 as the skew value.

See Also: snd_seq_get_queue_tempo()

void snd_seq_queue_tempo_set_skew_base	(	snd_seq_queue_tempo_t *	info,
		unsigned int	base
	)

Set the timer skew base value of a queue_status container.

Parameters

info	queue_status container
base	timer skew base value

See Also: snd_seq_get_queue_tempo()

void snd_seq_queue_tempo_set_tempo	(	snd_seq_queue_tempo_t *	info,
		unsigned int	tempo
	)

Set the tempo of a queue_status container.

Parameters

info	queue_status container
tempo	tempo value

See Also: snd_seq_get_queue_tempo()

size_t snd_seq_queue_tempo_sizeof ( void )

get size of snd_seq_queue_tempo_t

Returns: size in bytes

void snd_seq_queue_timer_copy	(	snd_seq_queue_timer_t *	dst,
		const snd_seq_queue_timer_t *	src
	)

copy one snd_seq_queue_timer_t to another

Parameters

dst	pointer to destination
src	pointer to source

void snd_seq_queue_timer_free ( snd_seq_queue_timer_t * obj )

frees a previously allocated snd_seq_queue_timer_t

Parameters

obj	pointer to object to free

const snd_timer_id_t* snd_seq_queue_timer_get_id ( const snd_seq_queue_timer_t * info )

Get the timer id of a queue_timer container.

Parameters

info	queue_timer container

Returns: timer id pointer

See Also: snd_seq_get_queue_timer()

int snd_seq_queue_timer_get_queue ( const snd_seq_queue_timer_t * info )

Get the queue id of a queue_timer container.

Parameters

info	queue_timer container

Returns: queue id

See Also: snd_seq_get_queue_timer()

unsigned int snd_seq_queue_timer_get_resolution ( const snd_seq_queue_timer_t * info )

Get the timer resolution of a queue_timer container.

Parameters

info	queue_timer container

Returns: timer resolution

See Also: snd_seq_get_queue_timer()

snd_seq_queue_timer_type_t snd_seq_queue_timer_get_type ( const snd_seq_queue_timer_t * info )

Get the timer type of a queue_timer container.

Parameters

info	queue_timer container

Returns: timer type

See Also: snd_seq_get_queue_timer()

int snd_seq_queue_timer_malloc ( snd_seq_queue_timer_t ** ptr )

allocate an empty snd_seq_queue_timer_t using standard malloc

Parameters

ptr	returned pointer

Returns: 0 on success otherwise negative error code

void snd_seq_queue_timer_set_id	(	snd_seq_queue_timer_t *	info,
		const snd_timer_id_t *	id
	)

Set the timer id of a queue_timer container.

Parameters

info	queue_timer container
id	timer id pointer

See Also: snd_seq_get_queue_timer()

void snd_seq_queue_timer_set_resolution	(	snd_seq_queue_timer_t *	info,
		unsigned int	resolution
	)

Set the timer resolution of a queue_timer container.

Parameters

info	queue_timer container
resolution	timer resolution

See Also: snd_seq_get_queue_timer()

void snd_seq_queue_timer_set_type	(	snd_seq_queue_timer_t *	info,
		snd_seq_queue_timer_type_t	type
	)

Set the timer type of a queue_timer container.

Parameters

info	queue_timer container
type	timer type

See Also: snd_seq_get_queue_timer()

size_t snd_seq_queue_timer_sizeof ( void )

get size of snd_seq_queue_timer_t

Returns: size in bytes

int snd_seq_set_queue_info	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_info_t *	info
	)

change the queue attributes

Parameters

seq	sequencer handle
q	queue id to change
info	information changed

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_get_queue_info()

int snd_seq_set_queue_tempo	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_tempo_t *	tempo
	)

set the tempo of the queue

Parameters

seq	sequencer handle
q	queue id to change the tempo
tempo	tempo information

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_get_queue_tempo()

int snd_seq_set_queue_timer	(	snd_seq_t *	seq,
		int	q,
		snd_seq_queue_timer_t *	timer
	)

set the queue timer information

Parameters

seq	sequencer handle
q	queue id to change the timer
timer	timer information

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_get_queue_timer()

int snd_seq_set_queue_usage	(	snd_seq_t *	seq,
		int	q,
		int	used
	)

Set the queue usage flag to the client.

Parameters

seq	sequencer handle
q	queue id
used	non-zero if the client is allowed

Returns: 0 on success otherwise a negative error code

See Also: snd_seq_get_queue_info(), snd_seq_set_queue_usage()

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