/builddir/build/BUILD/alsa-lib-1.0.14rc1/include/control.h

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00001 
00011 /*
00012  *   This library is free software; you can redistribute it and/or modify
00013  *   it under the terms of the GNU Lesser General Public License as
00014  *   published by the Free Software Foundation; either version 2.1 of
00015  *   the License, or (at your option) any later version.
00016  *
00017  *   This program is distributed in the hope that it will be useful,
00018  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
00019  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00020  *   GNU Lesser General Public License for more details.
00021  *
00022  *   You should have received a copy of the GNU Lesser General Public
00023  *   License along with this library; if not, write to the Free Software
00024  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
00025  *
00026  */
00027 
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 
00179 #define SND_CTL_TLV_DB_GAIN_MUTE        -9999999
00180 
00182 typedef enum _snd_ctl_type {
00184         SND_CTL_TYPE_HW,
00186         SND_CTL_TYPE_SHM,
00188         SND_CTL_TYPE_INET,
00190         SND_CTL_TYPE_EXT
00191 } snd_ctl_type_t;
00192 
00194 #define SND_CTL_NONBLOCK                0x0001
00195 
00197 #define SND_CTL_ASYNC                   0x0002
00198 
00200 #define SND_CTL_READONLY                0x0004
00201 
00203 typedef struct _snd_ctl snd_ctl_t;
00204 
00206 #define SND_SCTL_NOFREE                 0x0001
00207 
00209 typedef struct _snd_sctl snd_sctl_t;
00210 
00211 int snd_card_load(int card);
00212 int snd_card_next(int *card);
00213 int snd_card_get_index(const char *name);
00214 int snd_card_get_name(int card, char **name);
00215 int snd_card_get_longname(int card, char **name);
00216 
00217 int snd_device_name_hint(int card, const char *iface, void ***hints);
00218 int snd_device_name_free_hint(void **hints);
00219 char *snd_device_name_get_hint(const void *hint, const char *id);
00220 
00221 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode);
00222 int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf);
00223 int snd_ctl_close(snd_ctl_t *ctl);
00224 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock);
00225 int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl, 
00226                               snd_async_callback_t callback, void *private_data);
00227 snd_ctl_t *snd_async_handler_get_ctl(snd_async_handler_t *handler);
00228 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl);
00229 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space);
00230 int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00231 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe);
00232 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info);
00233 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list);
00234 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info);
00235 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
00236 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
00237 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00238 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00239 int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00240                           unsigned int *tlv, unsigned int tlv_size);
00241 int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00242                            const unsigned int *tlv);
00243 int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00244                              const unsigned int *tlv);
00245 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device);
00246 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info);
00247 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device);
00248 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info);
00249 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
00250 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
00251 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
00252 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
00253 int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state);
00254 int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state);
00255 
00256 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event);
00257 int snd_ctl_wait(snd_ctl_t *ctl, int timeout);
00258 const char *snd_ctl_name(snd_ctl_t *ctl);
00259 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl);
00260 
00261 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type);
00262 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface);
00263 const char *snd_ctl_iface_conf_name(snd_ctl_elem_iface_t iface);
00264 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type);
00265 
00266 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj);
00267 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj);
00268 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr);
00269 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj);
00270 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj);
00271 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj);
00272 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj);
00273 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj);
00274 
00275 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries);
00276 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
00277 
00278 size_t snd_ctl_elem_id_sizeof(void);
00283 #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)
00284 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr);
00285 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj);
00286 void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj);
00287 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src);
00288 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj);
00289 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj);
00290 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj);
00291 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj);
00292 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj);
00293 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj);
00294 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val);
00295 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val);
00296 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val);
00297 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val);
00298 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val);
00299 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val);
00300 
00301 size_t snd_ctl_card_info_sizeof(void);
00306 #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)
00307 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr);
00308 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj);
00309 void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj);
00310 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src);
00311 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj);
00312 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj);
00313 const char *snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj);
00314 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj);
00315 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj);
00316 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj);
00317 const char *snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj);
00318 
00319 size_t snd_ctl_event_sizeof(void);
00324 #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)
00325 int snd_ctl_event_malloc(snd_ctl_event_t **ptr);
00326 void snd_ctl_event_free(snd_ctl_event_t *obj);
00327 void snd_ctl_event_clear(snd_ctl_event_t *obj);
00328 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src);
00329 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj);
00330 
00331 size_t snd_ctl_elem_list_sizeof(void);
00336 #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)
00337 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr);
00338 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj);
00339 void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj);
00340 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src);
00341 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val);
00342 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj);
00343 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj);
00344 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr);
00345 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx);
00346 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx);
00347 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx);
00348 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx);
00349 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx);
00350 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx);
00351 
00352 size_t snd_ctl_elem_info_sizeof(void);
00357 #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)
00358 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr);
00359 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj);
00360 void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj);
00361 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src);
00362 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj);
00363 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj);
00364 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj);
00365 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj);
00366 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj);
00367 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj);
00368 int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj);
00369 int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj);
00370 int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj);
00371 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj);
00372 int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj);
00373 pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj);
00374 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj);
00375 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj);
00376 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj);
00377 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj);
00378 long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj);
00379 long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj);
00380 long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj);
00381 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj);
00382 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val);
00383 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj);
00384 int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj);
00385 int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx);
00386 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
00387 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
00388 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
00389 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
00390 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
00391 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
00392 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
00393 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
00394 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
00395 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
00396 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
00397 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
00398 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
00399 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
00400 
00401 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);
00402 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);
00403 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);
00404 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id);
00405 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00406 
00407 size_t snd_ctl_elem_value_sizeof(void);
00412 #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)
00413 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
00414 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
00415 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj);
00416 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
00417 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
00418 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
00419 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
00420 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
00421 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
00422 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
00423 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
00424 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
00425 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
00426 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
00427 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
00428 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
00429 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
00430 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
00431 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
00432 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
00433 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx);
00434 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
00435 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
00436 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
00437 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
00438 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val);
00439 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
00440 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
00441 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
00442 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
00443 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
00444 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
00445 
00455 typedef struct _snd_hctl_elem snd_hctl_elem_t;
00456 
00458 typedef struct _snd_hctl snd_hctl_t;
00459 
00466 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
00467                                   const snd_hctl_elem_t *e2);
00468 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
00469                           const snd_hctl_elem_t *c2);
00477 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
00478                                    unsigned int mask,
00479                                    snd_hctl_elem_t *elem);
00486 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
00487                                         unsigned int mask);
00488 
00489 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
00490 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl);
00491 int snd_hctl_close(snd_hctl_t *hctl);
00492 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
00493 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
00494 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
00495 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00496 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
00497 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
00498 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
00499 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
00500 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
00501 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
00502 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
00503 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
00504 int snd_hctl_load(snd_hctl_t *hctl);
00505 int snd_hctl_free(snd_hctl_t *hctl);
00506 int snd_hctl_handle_events(snd_hctl_t *hctl);
00507 const char *snd_hctl_name(snd_hctl_t *hctl);
00508 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
00509 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl);
00510 
00511 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
00512 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
00513 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
00514 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
00515 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
00516 int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size);
00517 int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv);
00518 int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv);
00519 
00520 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
00521 
00522 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
00523 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
00524 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
00525 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
00526 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
00527 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
00528 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
00529 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
00530 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
00531 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);
00532 
00544 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
00545                    snd_config_t *private_data, int mode);
00546 int snd_sctl_free(snd_sctl_t *handle);
00547 int snd_sctl_install(snd_sctl_t *handle);
00548 int snd_sctl_remove(snd_sctl_t *handle);
00549 
00552 #ifdef __cplusplus
00553 }
00554 #endif
00555 
00556 #endif /* __ALSA_CONTROL_H */

Generated on Mon Mar 19 09:24:17 2007 for ALSA project - the C library reference by  doxygen 1.4.6