1 /****************************************************************************
6 ****************************************************************************/
8 typedef struct snd_ctl snd_ctl_t;
10 typedef struct snd_ctl_callbacks {
11 void *private_data; /* may be used by an application */
12 void (*rebuild) (snd_ctl_t *handle, void *private_data);
13 void (*value) (snd_ctl_t *handle, void *private_data, snd_control_id_t * id);
14 void (*change) (snd_ctl_t *handle, void *private_data, snd_control_id_t * id);
15 void (*add) (snd_ctl_t *handle, void *private_data, snd_control_id_t * id);
16 void (*remove) (snd_ctl_t *handle, void *private_data, snd_control_id_t * id);
17 void *reserved[58]; /* reserved for the future use - must be NULL!!! */
18 } snd_ctl_callbacks_t;
24 int snd_card_load(int card);
26 unsigned int snd_cards_mask(void);
27 int snd_card_get_index(const char *name);
28 int snd_card_get_name(int card, char **name);
29 int snd_card_get_longname(int card, char **name);
31 int snd_defaults_card(void);
32 int snd_defaults_mixer_card(void);
33 int snd_defaults_pcm_card(void);
34 int snd_defaults_pcm_device(void);
35 int snd_defaults_rawmidi_card(void);
36 int snd_defaults_rawmidi_device(void);
38 int snd_ctl_open(snd_ctl_t **handle, int card);
39 int snd_ctl_close(snd_ctl_t *handle);
40 int snd_ctl_file_descriptor(snd_ctl_t *handle);
41 int snd_ctl_hw_info(snd_ctl_t *handle, snd_ctl_hw_info_t *info);
42 int snd_ctl_clist(snd_ctl_t *handle, snd_control_list_t * list);
43 int snd_ctl_cinfo(snd_ctl_t *handle, snd_control_info_t * sw);
44 int snd_ctl_cread(snd_ctl_t *handle, snd_control_t * control);
45 int snd_ctl_cwrite(snd_ctl_t *handle, snd_control_t * control);
46 int snd_ctl_hwdep_info(snd_ctl_t *handle, snd_hwdep_info_t * info);
47 int snd_ctl_pcm_info(snd_ctl_t *handle, snd_pcm_info_t * info);
48 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *handle, int subdev);
49 int snd_ctl_rawmidi_info(snd_ctl_t *handle, snd_rawmidi_info_t * info);
51 int snd_ctl_read(snd_ctl_t *handle, snd_ctl_callbacks_t * callbacks);
58 * Highlevel API for controls
61 #define LIST_HEAD_IS_DEFINED
63 struct list_head *next, *prev;
67 * list_entry - get the struct for this entry
68 * @ptr: the &struct list_head pointer.
69 * @type: the type of the struct this is embedded in.
70 * @member: the name of the list_struct within the struct.
72 #define list_entry(ptr, type, member) \
73 ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
76 typedef struct snd_hcontrol_list_stru snd_hcontrol_list_t;
77 typedef struct snd_hcontrol_stru snd_hcontrol_t;
79 struct snd_hcontrol_list_stru {
80 unsigned int controls_offset; /* W: first control ID to get */
81 unsigned int controls_request; /* W: count of control IDs to get */
82 unsigned int controls_count; /* R: count of available (set) controls */
83 unsigned int controls; /* R: count of all available controls */
84 snd_control_id_t *pids; /* W: IDs */
87 struct snd_hcontrol_stru {
88 snd_control_id_t id; /* must be always on top */
89 struct list_head list; /* links for list of all hcontrols */
90 int change: 1, /* structure change */
91 value: 1; /* value change */
93 void (*event_change)(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
94 void (*event_value)(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
95 void (*event_remove)(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
98 void (*private_free)(void *private_data);
100 snd_ctl_t *handle; /* associated handle */
107 typedef int (snd_ctl_hsort_t)(const snd_hcontrol_t *c1, const snd_hcontrol_t *c2);
108 typedef void (snd_ctl_hcallback_rebuild_t)(snd_ctl_t *handle, void *private_data);
109 typedef void (snd_ctl_hcallback_add_t)(snd_ctl_t *handle, void *private_data, snd_hcontrol_t *hcontrol);
111 int snd_ctl_hbuild(snd_ctl_t *handle, snd_ctl_hsort_t *csort);
112 int snd_ctl_hfree(snd_ctl_t *handle);
113 snd_hcontrol_t *snd_ctl_hfirst(snd_ctl_t *handle);
114 snd_hcontrol_t *snd_ctl_hlast(snd_ctl_t *handle);
115 snd_hcontrol_t *snd_ctl_hnext(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
116 snd_hcontrol_t *snd_ctl_hprev(snd_ctl_t *handle, snd_hcontrol_t *hcontrol);
117 int snd_ctl_hcount(snd_ctl_t *handle);
118 snd_hcontrol_t *snd_ctl_hfind(snd_ctl_t *handle, snd_control_id_t *id);
119 int snd_ctl_hlist(snd_ctl_t *handle, snd_hcontrol_list_t *hlist);
120 int snd_ctl_hsort(const snd_hcontrol_t *c1, const snd_hcontrol_t *c2);
121 int snd_ctl_hresort(snd_ctl_t *handle, snd_ctl_hsort_t *csort);
122 int snd_ctl_hcallback_rebuild(snd_ctl_t *handle, snd_ctl_hcallback_rebuild_t *callback, void *private_data);
123 int snd_ctl_hcallback_add(snd_ctl_t *handle, snd_ctl_hcallback_add_t *callback, void *private_data);
124 int snd_ctl_hevent(snd_ctl_t *handle);
126 int snd_ctl_hbag_create(void **bag);
127 int snd_ctl_hbag_destroy(void **bag, void (*hcontrol_free)(snd_hcontrol_t *hcontrol));
128 int snd_ctl_hbag_add(void **bag, snd_hcontrol_t *hcontrol);
129 int snd_ctl_hbag_del(void **bag, snd_hcontrol_t *hcontrol);
130 snd_hcontrol_t *snd_ctl_hbag_find(void **bag, snd_control_id_t *id);