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Completed control and mixer API

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This commit is contained in:
Abramo Bagnara 2001-02-09 11:20:31 +00:00
parent c709b0a627
commit fea0c73cdb
23 changed files with 1988 additions and 1251 deletions
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69
src/control/control_local.h
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@ -24,12 +24,14 @@
typedef struct _snd_ctl_ops {
int (*close)(snd_ctl_t *handle);
int (*nonblock)(snd_ctl_t *handle, int nonblock);
int (*async)(snd_ctl_t *handle, int sig, pid_t pid);
int (*poll_descriptor)(snd_ctl_t *handle);
int (*hw_info)(snd_ctl_t *handle, snd_ctl_card_info_t *info);
int (*clist)(snd_ctl_t *handle, snd_ctl_element_list_t *list);
int (*cinfo)(snd_ctl_t *handle, snd_ctl_element_info_t *info);
int (*cread)(snd_ctl_t *handle, snd_ctl_element_t *control);
int (*cwrite)(snd_ctl_t *handle, snd_ctl_element_t *control);
int (*element_list)(snd_ctl_t *handle, snd_ctl_elem_list_t *list);
int (*element_info)(snd_ctl_t *handle, snd_ctl_elem_info_t *info);
int (*element_read)(snd_ctl_t *handle, snd_ctl_elem_t *control);
int (*element_write)(snd_ctl_t *handle, snd_ctl_elem_t *control);
int (*hwdep_next_device)(snd_ctl_t *handle, int *device);
int (*hwdep_info)(snd_ctl_t *handle, snd_hwdep_info_t * info);
int (*pcm_next_device)(snd_ctl_t *handle, int *device);
@ -47,51 +49,30 @@ struct _snd_ctl {
snd_ctl_type_t type;
snd_ctl_ops_t *ops;
void *private;
int hcount;
int herr;
int nonblock;
struct list_head hlist; /* list of all controls */
void *hroot; /* root of controls */
void *hroot_new; /* new croot */
snd_ctl_hsort_t hsort;
snd_ctl_hcallback_rebuild_t callback_rebuild;
void *callback_rebuild_private_data;
snd_ctl_hcallback_add_t callback_add;
void *callback_add_private_data;
unsigned int halloc;
unsigned int hcount;
snd_hctl_elem_t **helems;
snd_hctl_compare_t hcompare;
snd_hctl_callback_t callback;
void *callback_private;
};
struct _snd_ctl_callbacks {
void *private_data; /* may be used by an application */
void (*rebuild) (snd_ctl_t *handle, void *private_data);
void (*value) (snd_ctl_t *handle, void *private_data, snd_ctl_element_id_t * id);
void (*change) (snd_ctl_t *handle, void *private_data, snd_ctl_element_id_t * id);
void (*add) (snd_ctl_t *handle, void *private_data, snd_ctl_element_id_t * id);
void (*remove) (snd_ctl_t *handle, void *private_data, snd_ctl_element_id_t * id);
void *reserved[58]; /* reserved for the future use - must be NULL!!! */
};
struct _snd_hctl_element_list {
unsigned int offset; /* W: first control ID to get */
unsigned int space; /* W: count of control IDs to get */
unsigned int used; /* R: count of available (set) controls */
unsigned int count; /* R: count of all available controls */
snd_ctl_element_id_t *pids; /* W: IDs */
};
struct _snd_hctl_element {
snd_ctl_element_id_t id; /* must be always on top */
struct list_head list; /* links for list of all helems */
int change: 1, /* structure change */
value: 1; /* value change */
/* event callbacks */
snd_hctl_element_callback_t callback_change;
snd_hctl_element_callback_t callback_value;
snd_hctl_element_callback_t callback_remove;
/* private data */
void *private_data;
snd_hctl_element_private_free_t private_free;
struct _snd_hctl_elem {
snd_ctl_elem_id_t id; /* must be always on top */
struct list_head list; /* links for list of all helems */
/* event callback */
snd_hctl_elem_callback_t callback;
void *callback_private;
/* links */
snd_ctl_t *handle; /* associated handle */
snd_ctl_t *ctl; /* associated handle */
};
int snd_ctl_hw_open(snd_ctl_t **handle, const char *name, int card);
int snd_ctl_shm_open(snd_ctl_t **handlep, const char *name, const char *socket, const char *sname);
int snd_hctl_free(snd_ctl_t *ctl);
int snd_hctl_compare_default(const snd_hctl_elem_t *c1,
const snd_hctl_elem_t *c2);