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Added snd_hctl_open_ctl() function.

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alisp massive extensions and tested ALSA function bindings.
This commit is contained in:
Jaroslav Kysela 2003-07-27 20:20:26 +00:00
parent 6a543d8e20
commit 92093ae0fe
11 changed files with 575 additions and 128 deletions
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24
src/control/hcontrol.c
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@ -69,18 +69,32 @@ static int snd_hctl_compare_default(const snd_hctl_elem_t *c1,
*/
int snd_hctl_open(snd_hctl_t **hctlp, const char *name, int mode)
{
snd_hctl_t *hctl;
snd_ctl_t *ctl;
int err;
assert(hctlp);
*hctlp = NULL;
if ((err = snd_ctl_open(&ctl, name, mode)) < 0)
return err;
if ((hctl = (snd_hctl_t *)calloc(1, sizeof(snd_hctl_t))) == NULL) {
err = snd_hctl_open_ctl(hctlp, ctl);
if (err < 0)
snd_ctl_close(ctl);
return err;
}
/**
* \brief Opens an HCTL
* \param hctlp Returned HCTL handle
* \param ctl underlying CTL handle
* \return 0 on success otherwise a negative error code
*/
int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl)
{
snd_hctl_t *hctl;
int err;
assert(hctlp);
*hctlp = NULL;
if ((hctl = (snd_hctl_t *)calloc(1, sizeof(snd_hctl_t))) == NULL)
return -ENOMEM;
}
INIT_LIST_HEAD(&hctl->elems);
hctl->ctl = ctl;
*hctlp = hctl;