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This commit is contained in:
Abramo Bagnara 2001-03-29 09:44:29 +00:00
parent de4cfc3e4b
commit 78af661d60
5 changed files with 107 additions and 28 deletions
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21
include/control.h
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@ -241,19 +241,40 @@ void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
* Highlevel API for controls
*/
/** HCTL element handle */
typedef struct _snd_hctl_elem snd_hctl_elem_t;
/** HCTL handle */
typedef struct _snd_hctl snd_hctl_t;
#ifdef __cplusplus
extern "C" {
#endif
/**
* \brief Compare function for sorting HCTL elements
* \param e1 First element
* \param e2 Second element
* \return -1 if e1 < e2, 0 if e1 == e2, 1 if e1 > e2
*/
typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
const snd_hctl_elem_t *e2);
/**
* \brief HCTL callback function
* \param hctl HCTL handle
* \param mask event mask
* \param elem related HCTL element (if any)
* \return 0 on success otherwise a negative error code
*/
typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
unsigned int mask,
snd_hctl_elem_t *elem);
/**
* \brief HCTL element callback function
* \param elem HCTL element
* \param mask event mask
* \return 0 on success otherwise a negative error code
*/
typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
unsigned int mask);