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Added sort & compare functions to the mixer API.

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This commit is contained in:
Jaroslav Kysela 2001-02-12 13:29:33 +00:00
parent 955b9fc335
commit 6f3b01b79c
7 changed files with 160 additions and 63 deletions
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10
src/control/hcontrol.c
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@ -187,7 +187,7 @@ static void snd_hctl_sort(snd_hctl_t *hctl)
unsigned int k;
int compar(const void *a, const void *b) {
return hctl->compare(*(const snd_hctl_elem_t **) a,
*(const snd_hctl_elem_t **) b);
*(const snd_hctl_elem_t **) b);
}
assert(hctl);
assert(hctl->compare);
@ -197,11 +197,12 @@ static void snd_hctl_sort(snd_hctl_t *hctl)
list_add_tail(&hctl->pelems[k]->list, &hctl->elems);
}
void snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort)
int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort)
{
assert(hctl);
hctl->compare = hsort == NULL ? snd_hctl_compare_default : hsort;
snd_hctl_sort(hctl);
return 0;
}
#define NOT_FOUND 1000000000
@ -534,3 +535,8 @@ int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value)
return snd_ctl_elem_write(elem->hctl->ctl, value);
}
snd_hctl_t *snd_hctl_elem_get_handle(snd_hctl_elem_t *elem)
{
assert(elem);
return elem->hctl;
}