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00028 #ifndef __ALSA_CONTROL_H
00029 #define __ALSA_CONTROL_H
00030
00031 #ifdef __cplusplus
00032 extern "C" {
00033 #endif
00034
00043 #define SND_CONTROL_DLSYM_VERSION _dlsym_control_001
00044
00046 typedef struct snd_aes_iec958 {
00047 unsigned char status[24];
00048 unsigned char subcode[147];
00049 unsigned char pad;
00050 unsigned char dig_subframe[4];
00051 } snd_aes_iec958_t;
00052
00054 typedef struct _snd_ctl_card_info snd_ctl_card_info_t;
00055
00057 typedef struct _snd_ctl_elem_id snd_ctl_elem_id_t;
00058
00060 typedef struct _snd_ctl_elem_list snd_ctl_elem_list_t;
00061
00063 typedef struct _snd_ctl_elem_info snd_ctl_elem_info_t;
00064
00066 typedef struct _snd_ctl_elem_value snd_ctl_elem_value_t;
00067
00069 typedef struct _snd_ctl_event snd_ctl_event_t;
00070
00072 typedef enum _snd_ctl_elem_type {
00074 SND_CTL_ELEM_TYPE_NONE = 0,
00076 SND_CTL_ELEM_TYPE_BOOLEAN,
00078 SND_CTL_ELEM_TYPE_INTEGER,
00080 SND_CTL_ELEM_TYPE_ENUMERATED,
00082 SND_CTL_ELEM_TYPE_BYTES,
00084 SND_CTL_ELEM_TYPE_IEC958,
00086 SND_CTL_ELEM_TYPE_INTEGER64,
00087 SND_CTL_ELEM_TYPE_LAST = SND_CTL_ELEM_TYPE_INTEGER64
00088 } snd_ctl_elem_type_t;
00089
00091 typedef enum _snd_ctl_elem_iface {
00093 SND_CTL_ELEM_IFACE_CARD = 0,
00095 SND_CTL_ELEM_IFACE_HWDEP,
00097 SND_CTL_ELEM_IFACE_MIXER,
00099 SND_CTL_ELEM_IFACE_PCM,
00101 SND_CTL_ELEM_IFACE_RAWMIDI,
00103 SND_CTL_ELEM_IFACE_TIMER,
00105 SND_CTL_ELEM_IFACE_SEQUENCER,
00106 SND_CTL_ELEM_IFACE_LAST = SND_CTL_ELEM_IFACE_SEQUENCER
00107 } snd_ctl_elem_iface_t;
00108
00110 typedef enum _snd_ctl_event_type {
00112 SND_CTL_EVENT_ELEM = 0,
00113 SND_CTL_EVENT_LAST = SND_CTL_EVENT_ELEM
00114 }snd_ctl_event_type_t;
00115
00118 #define SND_CTL_EVENT_MASK_REMOVE (~0U)
00119
00120 #define SND_CTL_EVENT_MASK_VALUE (1<<0)
00121
00122 #define SND_CTL_EVENT_MASK_INFO (1<<1)
00123
00124 #define SND_CTL_EVENT_MASK_ADD (1<<2)
00125
00126 #define SND_CTL_EVENT_MASK_TLV (1<<3)
00127
00129 #define SND_CTL_NAME_NONE ""
00130
00131 #define SND_CTL_NAME_PLAYBACK "Playback "
00132
00133 #define SND_CTL_NAME_CAPTURE "Capture "
00134
00136 #define SND_CTL_NAME_IEC958_NONE ""
00137
00138 #define SND_CTL_NAME_IEC958_SWITCH "Switch"
00139
00140 #define SND_CTL_NAME_IEC958_VOLUME "Volume"
00141
00142 #define SND_CTL_NAME_IEC958_DEFAULT "Default"
00143
00144 #define SND_CTL_NAME_IEC958_MASK "Mask"
00145
00146 #define SND_CTL_NAME_IEC958_CON_MASK "Con Mask"
00147
00148 #define SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
00149
00150 #define SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
00151
00152 #define SND_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what
00153
00155 #define SND_CTL_POWER_MASK 0xff00
00156
00157 #define SND_CTL_POWER_D0 0x0000
00158
00159 #define SND_CTL_POWER_D1 0x0100
00160
00161 #define SND_CTL_POWER_D2 0x0200
00162
00163 #define SND_CTL_POWER_D3 0x0300
00164
00165 #define SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000)
00166
00167 #define SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001)
00168
00170 #define SND_CTL_TLVT_CONTAINER 0x0000
00171
00172 #define SND_CTL_TLVT_DB_SCALE 0x0001
00173
00174 #define SND_CTL_TLVT_DB_LINEAR 0x0002
00175
00176 #define SND_CTL_TLVT_DB_RANGE 0x0003
00177
00178 #define SND_CTL_TLVT_DB_MINMAX 0x0004
00179
00180 #define SND_CTL_TLVT_DB_MINMAX_MUTE 0x0005
00181
00183 #define SND_CTL_TLV_DB_GAIN_MUTE -9999999
00184
00186 typedef enum _snd_ctl_type {
00188 SND_CTL_TYPE_HW,
00190 SND_CTL_TYPE_SHM,
00192 SND_CTL_TYPE_INET,
00194 SND_CTL_TYPE_EXT
00195 } snd_ctl_type_t;
00196
00198 #define SND_CTL_NONBLOCK 0x0001
00199
00201 #define SND_CTL_ASYNC 0x0002
00202
00204 #define SND_CTL_READONLY 0x0004
00205
00207 typedef struct _snd_ctl snd_ctl_t;
00208
00210 #define SND_SCTL_NOFREE 0x0001
00211
00213 typedef struct _snd_sctl snd_sctl_t;
00214
00215 int snd_card_load(int card);
00216 int snd_card_next(int *card);
00217 int snd_card_get_index(const char *name);
00218 int snd_card_get_name(int card, char **name);
00219 int snd_card_get_longname(int card, char **name);
00220
00221 int snd_device_name_hint(int card, const char *iface, void ***hints);
00222 int snd_device_name_free_hint(void **hints);
00223 char *snd_device_name_get_hint(const void *hint, const char *id);
00224
00225 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode);
00226 int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf);
00227 int snd_ctl_close(snd_ctl_t *ctl);
00228 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock);
00229 int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl,
00230 snd_async_callback_t callback, void *private_data);
00231 snd_ctl_t *snd_async_handler_get_ctl(snd_async_handler_t *handler);
00232 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl);
00233 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space);
00234 int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00235 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe);
00236 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info);
00237 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list);
00238 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info);
00239 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
00240 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
00241 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00242 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00243 int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00244 unsigned int *tlv, unsigned int tlv_size);
00245 int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00246 const unsigned int *tlv);
00247 int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00248 const unsigned int *tlv);
00249 #ifdef __ALSA_HWDEP_H
00250 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device);
00251 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info);
00252 #endif
00253 #ifdef __ALSA_PCM_H
00254 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device);
00255 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info);
00256 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
00257 #endif
00258 #ifdef __ALSA_RAWMIDI_H
00259 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
00260 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
00261 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
00262 #endif
00263 int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state);
00264 int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state);
00265
00266 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event);
00267 int snd_ctl_wait(snd_ctl_t *ctl, int timeout);
00268 const char *snd_ctl_name(snd_ctl_t *ctl);
00269 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl);
00270
00271 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type);
00272 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface);
00273 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type);
00274
00275 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj);
00276 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj);
00277 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr);
00278 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj);
00279 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj);
00280 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj);
00281 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj);
00282 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj);
00283
00284 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries);
00285 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
00286
00287 size_t snd_ctl_elem_id_sizeof(void);
00292 #define snd_ctl_elem_id_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_id)
00293 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr);
00294 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj);
00295 void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj);
00296 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src);
00297 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj);
00298 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj);
00299 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj);
00300 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj);
00301 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj);
00302 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj);
00303 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val);
00304 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val);
00305 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val);
00306 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val);
00307 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val);
00308 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val);
00309
00310 size_t snd_ctl_card_info_sizeof(void);
00315 #define snd_ctl_card_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_card_info)
00316 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr);
00317 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj);
00318 void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj);
00319 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src);
00320 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj);
00321 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj);
00322 const char *snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj);
00323 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj);
00324 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj);
00325 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj);
00326 const char *snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj);
00327
00328 size_t snd_ctl_event_sizeof(void);
00333 #define snd_ctl_event_alloca(ptr) __snd_alloca(ptr, snd_ctl_event)
00334 int snd_ctl_event_malloc(snd_ctl_event_t **ptr);
00335 void snd_ctl_event_free(snd_ctl_event_t *obj);
00336 void snd_ctl_event_clear(snd_ctl_event_t *obj);
00337 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src);
00338 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj);
00339
00340 size_t snd_ctl_elem_list_sizeof(void);
00345 #define snd_ctl_elem_list_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_list)
00346 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr);
00347 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj);
00348 void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj);
00349 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src);
00350 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val);
00351 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj);
00352 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj);
00353 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr);
00354 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx);
00355 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx);
00356 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx);
00357 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx);
00358 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx);
00359 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx);
00360
00361 size_t snd_ctl_elem_info_sizeof(void);
00366 #define snd_ctl_elem_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_info)
00367 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr);
00368 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj);
00369 void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj);
00370 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src);
00371 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj);
00372 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj);
00373 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj);
00374 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj);
00375 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj);
00376 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj);
00377 int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj);
00378 int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj);
00379 int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj);
00380 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj);
00381 int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj);
00382 pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj);
00383 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj);
00384 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj);
00385 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj);
00386 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj);
00387 long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj);
00388 long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj);
00389 long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj);
00390 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj);
00391 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val);
00392 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj);
00393 int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj);
00394 int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx);
00395 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
00396 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
00397 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
00398 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
00399 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
00400 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
00401 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
00402 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
00403 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
00404 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
00405 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
00406 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
00407 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
00408 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
00409
00410 int snd_ctl_elem_add_integer(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long imin, long imax, long istep);
00411 int snd_ctl_elem_add_integer64(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long long imin, long long imax, long long istep);
00412 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);
00413 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id);
00414 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00415
00416 size_t snd_ctl_elem_value_sizeof(void);
00421 #define snd_ctl_elem_value_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_value)
00422 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
00423 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
00424 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj);
00425 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
00426 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
00427 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
00428 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
00429 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
00430 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
00431 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
00432 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
00433 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
00434 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
00435 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
00436 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
00437 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
00438 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
00439 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
00440 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
00441 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
00442 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx);
00443 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
00444 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
00445 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
00446 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
00447 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val);
00448 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
00449 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
00450 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
00451 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
00452 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
00453 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
00454
00455 int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size,
00456 unsigned int **db_tlvp);
00457 int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax,
00458 long *min, long *max);
00459 int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax,
00460 long volume, long *db_gain);
00461 int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax,
00462 long db_gain, long *value, int xdir);
00463 int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00464 long *min, long *max);
00465 int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00466 long volume, long *db_gain);
00467 int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00468 long db_gain, long *value, int xdir);
00469
00479 typedef struct _snd_hctl_elem snd_hctl_elem_t;
00480
00482 typedef struct _snd_hctl snd_hctl_t;
00483
00490 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
00491 const snd_hctl_elem_t *e2);
00492 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
00493 const snd_hctl_elem_t *c2);
00501 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
00502 unsigned int mask,
00503 snd_hctl_elem_t *elem);
00510 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
00511 unsigned int mask);
00512
00513 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
00514 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl);
00515 int snd_hctl_close(snd_hctl_t *hctl);
00516 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
00517 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
00518 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
00519 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00520 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
00521 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
00522 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
00523 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
00524 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
00525 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
00526 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
00527 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
00528 int snd_hctl_load(snd_hctl_t *hctl);
00529 int snd_hctl_free(snd_hctl_t *hctl);
00530 int snd_hctl_handle_events(snd_hctl_t *hctl);
00531 const char *snd_hctl_name(snd_hctl_t *hctl);
00532 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
00533 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl);
00534
00535 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
00536 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
00537 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
00538 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
00539 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
00540 int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size);
00541 int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv);
00542 int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv);
00543
00544 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
00545
00546 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
00547 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
00548 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
00549 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
00550 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
00551 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
00552 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
00553 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
00554 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
00555 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);
00556
00568 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
00569 snd_config_t *private_data, int mode);
00570 int snd_sctl_free(snd_sctl_t *handle);
00571 int snd_sctl_install(snd_sctl_t *handle);
00572 int snd_sctl_remove(snd_sctl_t *handle);
00573
00576 #ifdef __cplusplus
00577 }
00578 #endif
00579
00580 #endif