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ctl: add functions to add an element set

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ALSA control core allows userspace applications to add an element set.
However, in ALSA userspace library, there's no APIs enough to utilize
the feature. The library has APIs just to add an element set with a single
element.

This commit adds functions to add an element set with several elements.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2016-06-15 23:57:39 +09:00 • committed by Takashi Iwai
parent 90020c05f8
commit 07861888e4
2 changed files with 413 additions and 0 deletions
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21
include/control.h
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@ -423,6 +423,27 @@ void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val)
void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
int snd_ctl_elem_add_integer_set(snd_ctl_t *ctl, snd_ctl_elem_id_t *id,
unsigned int element_count,
unsigned int member_count,
long min, long max, long step);
int snd_ctl_elem_add_integer64_set(snd_ctl_t *ctl, snd_ctl_elem_id_t *id,
unsigned int element_count,
unsigned int member_count,
long long min, long long max,
long long step);
int snd_ctl_elem_add_boolean_set(snd_ctl_t *ctl, snd_ctl_elem_id_t *id,
unsigned int element_count,
unsigned int member_count);
int snd_ctl_elem_add_enumerated_set(snd_ctl_t *ctl, snd_ctl_elem_id_t *id,
unsigned int element_count,
unsigned int member_count,
unsigned int items,
const char *const labels[]);
int snd_ctl_elem_add_bytes_set(snd_ctl_t *ctl, snd_ctl_elem_id_t *id,
unsigned int element_count,
unsigned int member_count);
int snd_ctl_elem_add_integer(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long imin, long imax, long istep);
int snd_ctl_elem_add_integer64(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long long imin, long long imax, long long istep);
int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);