[ALSA] Add helper functions for frequently used callbacks
Added helper functions for frequenty used callbacks: snd_ctl_boolean_mono_info() and snd_ctl_boolean_stereo_info() Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
parent
90fd5ce5f6
commit
b9ed4f2b68
|
@ -161,4 +161,12 @@ static inline struct snd_ctl_elem_id *snd_ctl_build_ioff(struct snd_ctl_elem_id
|
|||
return dst_id;
|
||||
}
|
||||
|
||||
/*
|
||||
* Frequently used control callbacks
|
||||
*/
|
||||
int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_info *uinfo);
|
||||
int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_info *uinfo);
|
||||
|
||||
#endif /* __SOUND_CONTROL_H */
|
||||
|
|
|
@ -1486,3 +1486,30 @@ int snd_ctl_create(struct snd_card *card)
|
|||
snd_assert(card != NULL, return -ENXIO);
|
||||
return snd_device_new(card, SNDRV_DEV_CONTROL, card, &ops);
|
||||
}
|
||||
|
||||
/*
|
||||
* Frequently used control callbacks
|
||||
*/
|
||||
int snd_ctl_boolean_mono_info(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_info *uinfo)
|
||||
{
|
||||
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
|
||||
uinfo->count = 1;
|
||||
uinfo->value.integer.min = 0;
|
||||
uinfo->value.integer.max = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(snd_ctl_boolean_mono_info);
|
||||
|
||||
int snd_ctl_boolean_stereo_info(struct snd_kcontrol *kcontrol,
|
||||
struct snd_ctl_elem_info *uinfo)
|
||||
{
|
||||
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
|
||||
uinfo->count = 2;
|
||||
uinfo->value.integer.min = 0;
|
||||
uinfo->value.integer.max = 1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL(snd_ctl_boolean_stereo_info);
|
||||
|
|
Loading…
Reference in a new issue