26 #ifndef __ALSA_CONTROL_EXTERNAL_H
27 #define __ALSA_CONTROL_EXTERNAL_H
43 #define SND_CTL_PLUGIN_ENTRY(name) _snd_ctl_##name##_open
48 #define SND_CTL_PLUGIN_SYMBOL(name) SND_DLSYM_BUILD_VERSION(SND_CTL_PLUGIN_ENTRY(name), SND_CONTROL_DLSYM_VERSION);
53 #define SND_CTL_PLUGIN_DEFINE_FUNC(plugin) \
54 int SND_CTL_PLUGIN_ENTRY(plugin) (snd_ctl_t **handlep, const char *name,\
55 snd_config_t *root, snd_config_t *conf, int mode)
67 #define SND_CTL_EXT_VERSION_MAJOR 1
68 #define SND_CTL_EXT_VERSION_MINOR 0
69 #define SND_CTL_EXT_VERSION_TINY 0
73 #define SND_CTL_EXT_VERSION ((SND_CTL_EXT_VERSION_MAJOR<<16) |\
74 (SND_CTL_EXT_VERSION_MINOR<<8) |\
75 (SND_CTL_EXT_VERSION_TINY))
151 void (*
free_key)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key);
156 int *type,
unsigned int *acc,
unsigned int *count);
161 long *imin,
long *imax,
long *istep);
166 int64_t *imin, int64_t *imax, int64_t *istep);
175 char *name,
size_t name_max_len);
179 int (*
read_integer)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value);
183 int (*
read_integer64)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, int64_t *value);
187 int (*
read_enumerated)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
unsigned int *items);
191 int (*
read_bytes)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
unsigned char *data,
200 int (*
write_integer)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
long *value);
212 int (*
write_bytes)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key,
unsigned char *data,
237 int (*
poll_revents)(snd_ctl_ext_t *ext,
struct pollfd *pfds,
unsigned int nfds,
unsigned short *revents);
243 typedef enum snd_ctl_ext_access {
244 SND_CTL_EXT_ACCESS_READ = (1<<0),
245 SND_CTL_EXT_ACCESS_WRITE = (1<<1),
246 SND_CTL_EXT_ACCESS_READWRITE = (3<<0),
247 SND_CTL_EXT_ACCESS_VOLATILE = (1<<2),
248 SND_CTL_EXT_ACCESS_INACTIVE = (1<<8),
254 #define SND_CTL_EXT_KEY_NOT_FOUND (snd_ctl_ext_key_t)(-1)
int poll_fd
Definition: control_external.h:111
int(* write_integer64)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, int64_t *value)
Definition: control_external.h:204
snd_ctl_t * handle
Definition: control_external.h:124
int subscribed
Definition: control_external.h:127
void(* free_key)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key)
Definition: control_external.h:151
int(* get_enumerated_name)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int item, char *name, size_t name_max_len)
Definition: control_external.h:174
int(* read_integer64)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, int64_t *value)
Definition: control_external.h:183
int snd_ctl_ext_delete(snd_ctl_ext_t *ext)
Delete the external control plugin.
Definition: control_ext.c:688
int(* get_attribute)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, int *type, unsigned int *acc, unsigned int *count)
Definition: control_external.h:155
int(* write_enumerated)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int *items)
Definition: control_external.h:208
int(* read_enumerated)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int *items)
Definition: control_external.h:187
int(* poll_revents)(snd_ctl_ext_t *ext, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
Definition: control_external.h:237
int(* read_bytes)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned char *data, size_t max_bytes)
Definition: control_external.h:191
int(* poll_descriptors_count)(snd_ctl_ext_t *ext)
Definition: control_external.h:229
snd_ctl_ext_key_t(* find_elem)(snd_ctl_ext_t *ext, const snd_ctl_elem_id_t *id)
Definition: control_external.h:147
const snd_ctl_ext_callback_t * callback
Definition: control_external.h:116
char mixername[80]
Definition: control_external.h:107
struct _snd_ctl snd_ctl_t
Definition: control.h:207
int(* poll_descriptors)(snd_ctl_ext_t *ext, struct pollfd *pfds, unsigned int space)
Definition: control_external.h:233
int(* get_integer_info)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *imin, long *imax, long *istep)
Definition: control_external.h:160
struct _snd_ctl_elem_id snd_ctl_elem_id_t
Definition: control.h:57
int(* write_bytes)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned char *data, size_t max_bytes)
Definition: control_external.h:212
Definition: control_external.h:131
unsigned long snd_ctl_ext_key_t
Definition: control_external.h:62
void(* subscribe_events)(snd_ctl_ext_t *ext, int subscribe)
Definition: control_external.h:221
int(* read_event)(snd_ctl_ext_t *ext, snd_ctl_elem_id_t *id, unsigned int *event_mask)
Definition: control_external.h:225
int(* elem_list)(snd_ctl_ext_t *ext, unsigned int offset, snd_ctl_elem_id_t *id)
Definition: control_external.h:143
int(* read_integer)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *value)
Definition: control_external.h:179
unsigned int version
Definition: control_external.h:83
Definition: control_external.h:78
int nonblock
Definition: control_external.h:126
int(* get_enumerated_info)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, unsigned int *items)
Definition: control_external.h:170
snd_ctl_ext_access_t
Definition: control_external.h:243
int(* get_integer64_info)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, int64_t *imin, int64_t *imax, int64_t *istep)
Definition: control_external.h:165
int(* elem_count)(snd_ctl_ext_t *ext)
Definition: control_external.h:139
int snd_ctl_ext_create(snd_ctl_ext_t *ext, const char *name, int mode)
Create an external control plugin instance.
Definition: control_ext.c:658
char name[32]
Definition: control_external.h:99
Application interface library for the ALSA driver.
int(* read_iec958)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, snd_aes_iec958_t *iec958)
Definition: control_external.h:196
int(* write_iec958)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, snd_aes_iec958_t *iec958)
Definition: control_external.h:217
char longname[80]
Definition: control_external.h:103
void(* close)(snd_ctl_ext_t *ext)
Definition: control_external.h:135
void * private_data
Definition: control_external.h:120
int card_idx
Definition: control_external.h:87
int(* write_integer)(snd_ctl_ext_t *ext, snd_ctl_ext_key_t key, long *value)
Definition: control_external.h:200
char driver[16]
Definition: control_external.h:95