int snd_ctl_read(snd_ctl_t *handle, snd_ctl_callbacks_t * callbacks);
+#ifdef __cplusplus
+}
+#endif
+
/*
* Highlevel API for controls
*/
snd_ctl_t *handle; /* associated handle */
};
+#ifdef __cplusplus
+extern "C" {
+#endif
+
typedef int (snd_ctl_hsort_t)(const snd_hcontrol_t *c1, const snd_hcontrol_t *c2);
-typedef int (snd_ctl_hcallback_rebuild_t)(snd_ctl_t *handle, void *private_data);
-typedef int (snd_ctl_hcallback_add_t)(snd_ctl_t *handle, void *private_data, snd_hcontrol_t *hcontrol);
+typedef void (snd_ctl_hcallback_rebuild_t)(snd_ctl_t *handle, void *private_data);
+typedef void (snd_ctl_hcallback_add_t)(snd_ctl_t *handle, void *private_data, snd_hcontrol_t *hcontrol);
int snd_ctl_hbuild(snd_ctl_t *handle, snd_ctl_hsort_t *csort);
int snd_ctl_hfree(snd_ctl_t *handle);
+snd_hcontrol_t *snd_ctl_hfirst(snd_ctl_t *handle);
+snd_hcontrol_t *snd_ctl_hlast(snd_ctl_t *handle);
+snd_hcontrol_t *snd_ctl_hnext(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
+snd_hcontrol_t *snd_ctl_hprev(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
+int snd_ctl_hcount(snd_ctl_t *handle);
snd_hcontrol_t *snd_ctl_hfind(snd_ctl_t *handle, snd_control_id_t *id);
int snd_ctl_hlist(snd_ctl_t *handle, snd_hcontrol_list_t *hlist);
int snd_ctl_hsort(const snd_hcontrol_t *c1, const snd_hcontrol_t *c2);
return 0;
}
+snd_hcontrol_t *snd_ctl_hfirst(snd_ctl_t *handle)
+{
+ assert(handle != NULL);
+ if (list_empty(&handle->hlist))
+ return NULL;
+ return (snd_hcontrol_t *)list_entry(handle->hlist.next, snd_hcontrol_t, list);
+}
+
+snd_hcontrol_t *snd_ctl_hlast(snd_ctl_t *handle)
+{
+ assert(handle != NULL);
+ if (list_empty(&handle->hlist))
+ return NULL;
+ return (snd_hcontrol_t *)list_entry(handle->hlist.prev, snd_hcontrol_t, list);
+}
+
+snd_hcontrol_t *snd_ctl_hnext(snd_ctl_t *handle, snd_hcontrol_t *hcontrol)
+{
+ assert(handle != NULL && hcontrol != NULL);
+ if (hcontrol->list.next == &handle->hlist)
+ return NULL;
+ return (snd_hcontrol_t *)list_entry(hcontrol->list.next, snd_hcontrol_t, list);
+}
+
+snd_hcontrol_t *snd_ctl_hprev(snd_ctl_t *handle, snd_hcontrol_t *hcontrol)
+{
+ assert(handle != NULL && hcontrol != NULL);
+ if (hcontrol->list.prev == &handle->hlist)
+ return NULL;
+ return (snd_hcontrol_t *)list_entry(hcontrol->list.prev, snd_hcontrol_t, list);
+}
+
+int snd_ctl_hcount(snd_ctl_t *handle)
+{
+ assert(handle != NULL);
+ return handle->hcount;
+}
+
snd_hcontrol_t *snd_ctl_hfind(snd_ctl_t *handle, snd_control_id_t *id)
{
void *res;