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More control/mixer API updates.

Browse source 
Added highlevel control layer.
Recoded simple control mixer API.
This commit is contained in:
Jaroslav Kysela 2000-07-28 20:21:12 +00:00
parent 72fa3cc203
commit f5d6fdeba8
8 changed files with 797 additions and 277 deletions
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37
include/control.h
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@ -50,6 +50,43 @@ int snd_ctl_rawmidi_info(snd_ctl_t *handle, snd_rawmidi_info_t * info);
int snd_ctl_read(snd_ctl_t *handle, snd_ctl_callbacks_t * callbacks);
/*
* Highlevel API for controls
*/
typedef struct snd_hcontrol_stru snd_hcontrol_t;
struct snd_hcontrol_stru {
snd_control_id_t id;
int change: 1, /* structure change */
value: 1; /* value change */
/* event callbacks */
void (*event_change)(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
void (*event_value)(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
void (*event_remove)(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
/* private data */
void *private_data;
void (*private_free)(void *private_data);
/* links */
snd_hcontrol_t *prev;
snd_hcontrol_t *next;
};
typedef int (snd_ctl_csort_t)(const snd_hcontrol_t **c1, const snd_hcontrol_t **c2);
typedef int (snd_ctl_ccallback_rebuild_t)(snd_ctl_t *handle, void *private_data);
typedef int (snd_ctl_ccallback_add_t)(snd_ctl_t *handle, void *private_data, snd_hcontrol_t *hcontrol);
int snd_ctl_cbuild(snd_ctl_t *handle, snd_ctl_csort_t *csort);
int snd_ctl_cfree(snd_ctl_t *handle);
snd_hcontrol_t *snd_ctl_cfirst(snd_ctl_t *handle);
snd_hcontrol_t *snd_ctl_clast(snd_ctl_t *handle);
snd_hcontrol_t *snd_ctl_cfind(snd_ctl_t *handle, snd_control_id_t *id);
int snd_ctl_csort(const snd_hcontrol_t **c1, const snd_hcontrol_t **c2);
int snd_ctl_cresort(snd_ctl_t *handle, snd_ctl_csort_t *csort);
int snd_ctl_ccallback_rebuild(snd_ctl_t *handle, snd_ctl_ccallback_rebuild_t *callback, void *private_data);
int snd_ctl_ccallback_add(snd_ctl_t *handle, snd_ctl_ccallback_add_t *callback, void *private_data);
int snd_ctl_cevent(snd_ctl_t *handle);
#ifdef __cplusplus
}
#endif