Software Parameters

Macros
#define	snd_pcm_sw_params_alloca(ptr)
	allocate an invalid snd_pcm_sw_params_t using standard alloca

Functions
size_t	snd_pcm_sw_params_sizeof (void)
	get size of snd_pcm_sw_params_t
int	snd_pcm_sw_params_malloc (snd_pcm_sw_params_t **ptr)
	allocate an invalid snd_pcm_sw_params_t using standard malloc
void	snd_pcm_sw_params_free (snd_pcm_sw_params_t *obj)
	frees a previously allocated snd_pcm_sw_params_t
void	snd_pcm_sw_params_copy (snd_pcm_sw_params_t *dst, const snd_pcm_sw_params_t *src)
	copy one snd_pcm_sw_params_t to another
int	snd_pcm_sw_params_get_boundary (const snd_pcm_sw_params_t *params, snd_pcm_uframes_t *val)
	Get boundary for ring pointers from a software configuration container.

Detailed Description

See the PCM (digital audio) interface page for more details.

Macro Definition Documentation

snd_pcm_sw_params_alloca

#define snd_pcm_sw_params_alloca

(

ptr

)

allocate an invalid snd_pcm_sw_params_t using standard alloca

Parameters

ptr	returned pointer

Examples

/test/latency.c, and /test/pcm.c.

Function Documentation

snd_pcm_sw_params_copy()

void snd_pcm_sw_params_copy	(	snd_pcm_sw_params_t *	dst,
		const snd_pcm_sw_params_t *	src )

copy one snd_pcm_sw_params_t to another

Parameters

dst	pointer to destination
src	pointer to source

snd_pcm_sw_params_free()

void snd_pcm_sw_params_free

(

snd_pcm_sw_params_t *

obj

)

frees a previously allocated snd_pcm_sw_params_t

Parameters

obj	pointer to object to free

snd_pcm_sw_params_get_boundary()

int snd_pcm_sw_params_get_boundary	(	const snd_pcm_sw_params_t *	params,
		snd_pcm_uframes_t *	val )

Get boundary for ring pointers from a software configuration container.

Parameters

params	Software configuration container
val	Returned boundary in frames

Returns

0 otherwise a negative error code

snd_pcm_sw_params_malloc()

int snd_pcm_sw_params_malloc

(

snd_pcm_sw_params_t **

ptr

)

allocate an invalid snd_pcm_sw_params_t using standard malloc

Parameters

ptr	returned pointer

Returns

0 on success otherwise negative error code

snd_pcm_sw_params_sizeof()

size_t snd_pcm_sw_params_sizeof

(

void

)

get size of snd_pcm_sw_params_t

Returns

size in bytes