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control.h

00001 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 00127 #define SND_CTL_NAME_NONE "" 00128 00129 #define SND_CTL_NAME_PLAYBACK "Playback " 00130 00131 #define SND_CTL_NAME_CAPTURE "Capture " 00132 00134 #define SND_CTL_NAME_IEC958_NONE "" 00135 00136 #define SND_CTL_NAME_IEC958_SWITCH "Switch" 00137 00138 #define SND_CTL_NAME_IEC958_VOLUME "Volume" 00139 00140 #define SND_CTL_NAME_IEC958_DEFAULT "Default" 00141 00142 #define SND_CTL_NAME_IEC958_MASK "Mask" 00143 00144 #define SND_CTL_NAME_IEC958_CON_MASK "Con Mask" 00145 00146 #define SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask" 00147 00148 #define SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" 00149 00150 #define SND_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what 00151 00153 #define SND_CTL_POWER_MASK 0xff00 00154 00155 #define SND_CTL_POWER_D0 0x0000 00156 00157 #define SND_CTL_POWER_D1 0x0100 00158 00159 #define SND_CTL_POWER_D2 0x0200 00160 00161 #define SND_CTL_POWER_D3 0x0300 00162 00163 #define SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000) 00164 00165 #define SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001) 00166 00168 typedef enum _snd_ctl_type { 00170 SND_CTL_TYPE_HW, 00172 SND_CTL_TYPE_SHM, 00174 SND_CTL_TYPE_INET 00175 } snd_ctl_type_t; 00176 00178 #define SND_CTL_NONBLOCK 0x0001 00179 00181 #define SND_CTL_ASYNC 0x0002 00182 00184 #define SND_CTL_READONLY 0x0004 00185 00187 typedef struct _snd_ctl snd_ctl_t; 00188 00190 #define SND_SCTL_NOFREE 0x0001 00191 00193 typedef struct _snd_sctl snd_sctl_t; 00194 00195 int snd_card_load(int card); 00196 int snd_card_next(int *card); 00197 int snd_card_get_index(const char *name); 00198 int snd_card_get_name(int card, char **name); 00199 int snd_card_get_longname(int card, char **name); 00200 00201 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode); 00202 int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf); 00203 int snd_ctl_close(snd_ctl_t *ctl); 00204 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock); 00205 int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl, 00206 snd_async_callback_t callback, void *private_data); 00207 snd_ctl_t *snd_async_handler_get_ctl(snd_async_handler_t *handler); 00208 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl); 00209 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space); 00210 int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); 00211 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe); 00212 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info); 00213 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t * list); 00214 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info); 00215 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *value); 00216 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *value); 00217 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id); 00218 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id); 00219 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device); 00220 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info); 00221 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device); 00222 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info); 00223 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev); 00224 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device); 00225 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info); 00226 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev); 00227 int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state); 00228 int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state); 00229 00230 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event); 00231 int snd_ctl_wait(snd_ctl_t *ctl, int timeout); 00232 const char *snd_ctl_name(snd_ctl_t *ctl); 00233 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl); 00234 00235 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type); 00236 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface); 00237 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type); 00238 00239 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj); 00240 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj); 00241 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr); 00242 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj); 00243 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj); 00244 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj); 00245 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj); 00246 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj); 00247 00248 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries); 00249 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj); 00250 00251 size_t snd_ctl_elem_id_sizeof(void); 00256 #define snd_ctl_elem_id_alloca(ptr) do { assert(ptr); *ptr = (snd_ctl_elem_id_t *) alloca(snd_ctl_elem_id_sizeof()); memset(*ptr, 0, snd_ctl_elem_id_sizeof()); } while (0) 00257 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr); 00258 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj); 00259 void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj); 00260 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src); 00261 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj); 00262 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj); 00263 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj); 00264 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj); 00265 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj); 00266 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj); 00267 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val); 00268 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val); 00269 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val); 00270 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val); 00271 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val); 00272 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val); 00273 00274 size_t snd_ctl_card_info_sizeof(void); 00279 #define snd_ctl_card_info_alloca(ptr) do { assert(ptr); *ptr = (snd_ctl_card_info_t *) alloca(snd_ctl_card_info_sizeof()); memset(*ptr, 0, snd_ctl_card_info_sizeof()); } while (0) 00280 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr); 00281 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj); 00282 void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj); 00283 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src); 00284 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj); 00285 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj); 00286 const char *snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj); 00287 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj); 00288 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj); 00289 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj); 00290 const char *snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj); 00291 00292 size_t snd_ctl_event_sizeof(void); 00297 #define snd_ctl_event_alloca(ptr) do { assert(ptr); *ptr = (snd_ctl_event_t *) alloca(snd_ctl_event_sizeof()); memset(*ptr, 0, snd_ctl_event_sizeof()); } while (0) 00298 int snd_ctl_event_malloc(snd_ctl_event_t **ptr); 00299 void snd_ctl_event_free(snd_ctl_event_t *obj); 00300 void snd_ctl_event_clear(snd_ctl_event_t *obj); 00301 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src); 00302 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj); 00303 00304 size_t snd_ctl_elem_list_sizeof(void); 00309 #define snd_ctl_elem_list_alloca(ptr) do { assert(ptr); *ptr = (snd_ctl_elem_list_t *) alloca(snd_ctl_elem_list_sizeof()); memset(*ptr, 0, snd_ctl_elem_list_sizeof()); } while (0) 00310 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr); 00311 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj); 00312 void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj); 00313 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src); 00314 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val); 00315 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj); 00316 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj); 00317 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr); 00318 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx); 00319 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx); 00320 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx); 00321 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx); 00322 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx); 00323 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx); 00324 00325 size_t snd_ctl_elem_info_sizeof(void); 00330 #define snd_ctl_elem_info_alloca(ptr) do { assert(ptr); *ptr = (snd_ctl_elem_info_t *) alloca(snd_ctl_elem_info_sizeof()); memset(*ptr, 0, snd_ctl_elem_info_sizeof()); } while (0) 00331 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr); 00332 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj); 00333 void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj); 00334 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src); 00335 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj); 00336 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj); 00337 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj); 00338 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj); 00339 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj); 00340 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj); 00341 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj); 00342 int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj); 00343 pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj); 00344 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj); 00345 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj); 00346 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj); 00347 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj); 00348 long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj); 00349 long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj); 00350 long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj); 00351 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj); 00352 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val); 00353 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj); 00354 int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj); 00355 int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx); 00356 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr); 00357 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj); 00358 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj); 00359 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj); 00360 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj); 00361 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj); 00362 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj); 00363 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr); 00364 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val); 00365 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val); 00366 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val); 00367 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val); 00368 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val); 00369 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val); 00370 00371 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);; 00372 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);; 00373 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count); 00374 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id); 00375 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id); 00376 00377 size_t snd_ctl_elem_value_sizeof(void); 00382 #define snd_ctl_elem_value_alloca(ptr) do { assert(ptr); *ptr = (snd_ctl_elem_value_t *) alloca(snd_ctl_elem_value_sizeof()); memset(*ptr, 0, snd_ctl_elem_value_sizeof()); } while (0) 00383 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr); 00384 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj); 00385 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj); 00386 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src); 00387 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr); 00388 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj); 00389 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj); 00390 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj); 00391 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj); 00392 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj); 00393 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj); 00394 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr); 00395 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val); 00396 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val); 00397 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val); 00398 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val); 00399 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val); 00400 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val); 00401 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx); 00402 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx); 00403 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx); 00404 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx); 00405 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx); 00406 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val); 00407 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val); 00408 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val); 00409 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val); 00410 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val); 00411 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size); 00412 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj); 00413 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr); 00414 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr); 00415 00425 typedef struct _snd_hctl_elem snd_hctl_elem_t; 00426 00428 typedef struct _snd_hctl snd_hctl_t; 00429 00436 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1, 00437 const snd_hctl_elem_t *e2); 00438 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1, 00439 const snd_hctl_elem_t *c2); 00447 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl, 00448 unsigned int mask, 00449 snd_hctl_elem_t *elem); 00456 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem, 00457 unsigned int mask); 00458 00459 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode); 00460 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl); 00461 int snd_hctl_close(snd_hctl_t *hctl); 00462 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock); 00463 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl); 00464 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space); 00465 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); 00466 unsigned int snd_hctl_get_count(snd_hctl_t *hctl); 00467 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort); 00468 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl); 00469 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl); 00470 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id); 00471 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback); 00472 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data); 00473 void *snd_hctl_get_callback_private(snd_hctl_t *hctl); 00474 int snd_hctl_load(snd_hctl_t *hctl); 00475 int snd_hctl_free(snd_hctl_t *hctl); 00476 int snd_hctl_handle_events(snd_hctl_t *hctl); 00477 const char *snd_hctl_name(snd_hctl_t *hctl); 00478 int snd_hctl_wait(snd_hctl_t *hctl, int timeout); 00479 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl); 00480 00481 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem); 00482 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem); 00483 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info); 00484 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value); 00485 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value); 00486 00487 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem); 00488 00489 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr); 00490 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj); 00491 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj); 00492 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj); 00493 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj); 00494 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj); 00495 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj); 00496 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val); 00497 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj); 00498 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val); 00499 00511 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config, 00512 snd_config_t *private_data, int mode); 00513 int snd_sctl_free(snd_sctl_t *handle); 00514 int snd_sctl_install(snd_sctl_t *handle); 00515 int snd_sctl_remove(snd_sctl_t *handle); 00516 00519 #ifdef __cplusplus 00520 } 00521 #endif 00522 00523 #endif /* __ALSA_CONTROL_H */

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